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1 /* Copyright (c) 2006-2010 Jonas Fonseca <fonseca@diku.dk>
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
14 #ifdef HAVE_CONFIG_H
15 #include "config.h"
16 #endif
18 #ifndef TIG_VERSION
19 #define TIG_VERSION "unknown-version"
20 #endif
22 #ifndef DEBUG
23 #define NDEBUG
24 #endif
26 #include <assert.h>
27 #include <errno.h>
28 #include <ctype.h>
29 #include <signal.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <sys/stat.h>
37 #include <sys/select.h>
38 #include <unistd.h>
39 #include <sys/time.h>
40 #include <time.h>
41 #include <fcntl.h>
43 #include <regex.h>
45 #include <locale.h>
46 #include <langinfo.h>
47 #include <iconv.h>
49 /* ncurses(3): Must be defined to have extended wide-character functions. */
50 #define _XOPEN_SOURCE_EXTENDED
52 #ifdef HAVE_NCURSESW_NCURSES_H
53 #include <ncursesw/ncurses.h>
54 #else
55 #ifdef HAVE_NCURSES_NCURSES_H
56 #include <ncurses/ncurses.h>
57 #else
58 #include <ncurses.h>
59 #endif
60 #endif
62 #if __GNUC__ >= 3
63 #define __NORETURN __attribute__((__noreturn__))
64 #else
65 #define __NORETURN
66 #endif
68 static void __NORETURN die(const char *err, ...);
69 static void warn(const char *msg, ...);
70 static void report(const char *msg, ...);
72 #define ABS(x) ((x) >= 0 ? (x) : -(x))
73 #define MIN(x, y) ((x) < (y) ? (x) : (y))
74 #define MAX(x, y) ((x) > (y) ? (x) : (y))
76 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
77 #define STRING_SIZE(x) (sizeof(x) - 1)
79 #define SIZEOF_STR 1024 /* Default string size. */
80 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
81 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
82 #define SIZEOF_ARG 32 /* Default argument array size. */
84 /* Revision graph */
86 #define REVGRAPH_INIT 'I'
87 #define REVGRAPH_MERGE 'M'
88 #define REVGRAPH_BRANCH '+'
89 #define REVGRAPH_COMMIT '*'
90 #define REVGRAPH_BOUND '^'
92 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
94 /* This color name can be used to refer to the default term colors. */
95 #define COLOR_DEFAULT (-1)
97 #define ICONV_NONE ((iconv_t) -1)
98 #ifndef ICONV_CONST
99 #define ICONV_CONST /* nothing */
100 #endif
102 /* The format and size of the date column in the main view. */
103 #define DATE_FORMAT "%Y-%m-%d %H:%M"
104 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
105 #define DATE_SHORT_COLS STRING_SIZE("2006-04-29 ")
107 #define ID_COLS 8
108 #define AUTHOR_COLS 19
110 #define MIN_VIEW_HEIGHT 4
112 #define NULL_ID "0000000000000000000000000000000000000000"
114 #define S_ISGITLINK(mode) (((mode) & S_IFMT) == 0160000)
116 /* Some ASCII-shorthands fitted into the ncurses namespace. */
117 #define KEY_TAB '\t'
118 #define KEY_RETURN '\r'
119 #define KEY_ESC 27
122 struct ref {
123 char id[SIZEOF_REV]; /* Commit SHA1 ID */
124 unsigned int head:1; /* Is it the current HEAD? */
125 unsigned int tag:1; /* Is it a tag? */
126 unsigned int ltag:1; /* If so, is the tag local? */
127 unsigned int remote:1; /* Is it a remote ref? */
128 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
129 char name[1]; /* Ref name; tag or head names are shortened. */
130 };
132 struct ref_list {
133 char id[SIZEOF_REV]; /* Commit SHA1 ID */
134 size_t size; /* Number of refs. */
135 struct ref **refs; /* References for this ID. */
136 };
138 static struct ref *get_ref_head();
139 static struct ref_list *get_ref_list(const char *id);
140 static void foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data);
141 static int load_refs(void);
143 enum format_flags {
144 FORMAT_ALL, /* Perform replacement in all arguments. */
145 FORMAT_NONE /* No replacement should be performed. */
146 };
148 static bool format_argv(const char *dst[], const char *src[], enum format_flags flags);
150 enum input_status {
151 INPUT_OK,
152 INPUT_SKIP,
153 INPUT_STOP,
154 INPUT_CANCEL
155 };
157 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
159 static char *prompt_input(const char *prompt, input_handler handler, void *data);
160 static bool prompt_yesno(const char *prompt);
162 struct menu_item {
163 int hotkey;
164 const char *text;
165 void *data;
166 };
168 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
170 /*
171 * Allocation helpers ... Entering macro hell to never be seen again.
172 */
174 #define DEFINE_ALLOCATOR(name, type, chunk_size) \
175 static type * \
176 name(type **mem, size_t size, size_t increase) \
177 { \
178 size_t num_chunks = (size + chunk_size - 1) / chunk_size; \
179 size_t num_chunks_new = (size + increase + chunk_size - 1) / chunk_size;\
180 type *tmp = *mem; \
181 \
182 if (mem == NULL || num_chunks != num_chunks_new) { \
183 tmp = realloc(tmp, num_chunks_new * chunk_size * sizeof(type)); \
184 if (tmp) \
185 *mem = tmp; \
186 } \
187 \
188 return tmp; \
189 }
191 /*
192 * String helpers
193 */
195 static inline void
196 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
197 {
198 if (srclen > dstlen - 1)
199 srclen = dstlen - 1;
201 strncpy(dst, src, srclen);
202 dst[srclen] = 0;
203 }
205 /* Shorthands for safely copying into a fixed buffer. */
207 #define string_copy(dst, src) \
208 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
210 #define string_ncopy(dst, src, srclen) \
211 string_ncopy_do(dst, sizeof(dst), src, srclen)
213 #define string_copy_rev(dst, src) \
214 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
216 #define string_add(dst, from, src) \
217 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
219 static void
220 string_expand(char *dst, size_t dstlen, const char *src, int tabsize)
221 {
222 size_t size, pos;
224 for (size = pos = 0; size < dstlen - 1 && src[pos]; pos++) {
225 if (src[pos] == '\t') {
226 size_t expanded = tabsize - (size % tabsize);
228 if (expanded + size >= dstlen - 1)
229 expanded = dstlen - size - 1;
230 memcpy(dst + size, " ", expanded);
231 size += expanded;
232 } else {
233 dst[size++] = src[pos];
234 }
235 }
237 dst[size] = 0;
238 }
240 static char *
241 chomp_string(char *name)
242 {
243 int namelen;
245 while (isspace(*name))
246 name++;
248 namelen = strlen(name) - 1;
249 while (namelen > 0 && isspace(name[namelen]))
250 name[namelen--] = 0;
252 return name;
253 }
255 static bool
256 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
257 {
258 va_list args;
259 size_t pos = bufpos ? *bufpos : 0;
261 va_start(args, fmt);
262 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
263 va_end(args);
265 if (bufpos)
266 *bufpos = pos;
268 return pos >= bufsize ? FALSE : TRUE;
269 }
271 #define string_format(buf, fmt, args...) \
272 string_nformat(buf, sizeof(buf), NULL, fmt, args)
274 #define string_format_from(buf, from, fmt, args...) \
275 string_nformat(buf, sizeof(buf), from, fmt, args)
277 static int
278 string_enum_compare(const char *str1, const char *str2, int len)
279 {
280 size_t i;
282 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
284 /* Diff-Header == DIFF_HEADER */
285 for (i = 0; i < len; i++) {
286 if (toupper(str1[i]) == toupper(str2[i]))
287 continue;
289 if (string_enum_sep(str1[i]) &&
290 string_enum_sep(str2[i]))
291 continue;
293 return str1[i] - str2[i];
294 }
296 return 0;
297 }
299 #define enum_equals(entry, str, len) \
300 ((entry).namelen == (len) && !string_enum_compare((entry).name, str, len))
302 struct enum_map {
303 const char *name;
304 int namelen;
305 int value;
306 };
308 #define ENUM_MAP(name, value) { name, STRING_SIZE(name), value }
310 static char *
311 enum_map_name(const char *name, size_t namelen)
312 {
313 static char buf[SIZEOF_STR];
314 int bufpos;
316 for (bufpos = 0; bufpos <= namelen; bufpos++) {
317 buf[bufpos] = tolower(name[bufpos]);
318 if (buf[bufpos] == '_')
319 buf[bufpos] = '-';
320 }
322 buf[bufpos] = 0;
323 return buf;
324 }
326 #define enum_name(entry) enum_map_name((entry).name, (entry).namelen)
328 static bool
329 map_enum_do(const struct enum_map *map, size_t map_size, int *value, const char *name)
330 {
331 size_t namelen = strlen(name);
332 int i;
334 for (i = 0; i < map_size; i++)
335 if (enum_equals(map[i], name, namelen)) {
336 *value = map[i].value;
337 return TRUE;
338 }
340 return FALSE;
341 }
343 #define map_enum(attr, map, name) \
344 map_enum_do(map, ARRAY_SIZE(map), attr, name)
346 #define prefixcmp(str1, str2) \
347 strncmp(str1, str2, STRING_SIZE(str2))
349 static inline int
350 suffixcmp(const char *str, int slen, const char *suffix)
351 {
352 size_t len = slen >= 0 ? slen : strlen(str);
353 size_t suffixlen = strlen(suffix);
355 return suffixlen < len ? strcmp(str + len - suffixlen, suffix) : -1;
356 }
359 /*
360 * Unicode / UTF-8 handling
361 *
362 * NOTE: Much of the following code for dealing with Unicode is derived from
363 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
364 * src/intl/charset.c from the UTF-8 branch commit elinks-0.11.0-g31f2c28.
365 */
367 static inline int
368 unicode_width(unsigned long c, int tab_size)
369 {
370 if (c >= 0x1100 &&
371 (c <= 0x115f /* Hangul Jamo */
372 || c == 0x2329
373 || c == 0x232a
374 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
375 /* CJK ... Yi */
376 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
377 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
378 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
379 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
380 || (c >= 0xffe0 && c <= 0xffe6)
381 || (c >= 0x20000 && c <= 0x2fffd)
382 || (c >= 0x30000 && c <= 0x3fffd)))
383 return 2;
385 if (c == '\t')
386 return tab_size;
388 return 1;
389 }
391 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
392 * Illegal bytes are set one. */
393 static const unsigned char utf8_bytes[256] = {
394 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
395 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
396 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
397 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
398 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
399 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
400 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,
401 3,3,3,3,3,3,3,3, 3,3,3,3,3,3,3,3, 4,4,4,4,4,4,4,4, 5,5,5,5,6,6,1,1,
402 };
404 static inline unsigned char
405 utf8_char_length(const char *string, const char *end)
406 {
407 int c = *(unsigned char *) string;
409 return utf8_bytes[c];
410 }
412 /* Decode UTF-8 multi-byte representation into a Unicode character. */
413 static inline unsigned long
414 utf8_to_unicode(const char *string, size_t length)
415 {
416 unsigned long unicode;
418 switch (length) {
419 case 1:
420 unicode = string[0];
421 break;
422 case 2:
423 unicode = (string[0] & 0x1f) << 6;
424 unicode += (string[1] & 0x3f);
425 break;
426 case 3:
427 unicode = (string[0] & 0x0f) << 12;
428 unicode += ((string[1] & 0x3f) << 6);
429 unicode += (string[2] & 0x3f);
430 break;
431 case 4:
432 unicode = (string[0] & 0x0f) << 18;
433 unicode += ((string[1] & 0x3f) << 12);
434 unicode += ((string[2] & 0x3f) << 6);
435 unicode += (string[3] & 0x3f);
436 break;
437 case 5:
438 unicode = (string[0] & 0x0f) << 24;
439 unicode += ((string[1] & 0x3f) << 18);
440 unicode += ((string[2] & 0x3f) << 12);
441 unicode += ((string[3] & 0x3f) << 6);
442 unicode += (string[4] & 0x3f);
443 break;
444 case 6:
445 unicode = (string[0] & 0x01) << 30;
446 unicode += ((string[1] & 0x3f) << 24);
447 unicode += ((string[2] & 0x3f) << 18);
448 unicode += ((string[3] & 0x3f) << 12);
449 unicode += ((string[4] & 0x3f) << 6);
450 unicode += (string[5] & 0x3f);
451 break;
452 default:
453 return 0;
454 }
456 /* Invalid characters could return the special 0xfffd value but NUL
457 * should be just as good. */
458 return unicode > 0xffff ? 0 : unicode;
459 }
461 /* Calculates how much of string can be shown within the given maximum width
462 * and sets trimmed parameter to non-zero value if all of string could not be
463 * shown. If the reserve flag is TRUE, it will reserve at least one
464 * trailing character, which can be useful when drawing a delimiter.
465 *
466 * Returns the number of bytes to output from string to satisfy max_width. */
467 static size_t
468 utf8_length(const char **start, size_t skip, int *width, size_t max_width, int *trimmed, bool reserve, int tab_size)
469 {
470 const char *string = *start;
471 const char *end = strchr(string, '\0');
472 unsigned char last_bytes = 0;
473 size_t last_ucwidth = 0;
475 *width = 0;
476 *trimmed = 0;
478 while (string < end) {
479 unsigned char bytes = utf8_char_length(string, end);
480 size_t ucwidth;
481 unsigned long unicode;
483 if (string + bytes > end)
484 break;
486 /* Change representation to figure out whether
487 * it is a single- or double-width character. */
489 unicode = utf8_to_unicode(string, bytes);
490 /* FIXME: Graceful handling of invalid Unicode character. */
491 if (!unicode)
492 break;
494 ucwidth = unicode_width(unicode, tab_size);
495 if (skip > 0) {
496 skip -= ucwidth <= skip ? ucwidth : skip;
497 *start += bytes;
498 }
499 *width += ucwidth;
500 if (*width > max_width) {
501 *trimmed = 1;
502 *width -= ucwidth;
503 if (reserve && *width == max_width) {
504 string -= last_bytes;
505 *width -= last_ucwidth;
506 }
507 break;
508 }
510 string += bytes;
511 last_bytes = ucwidth ? bytes : 0;
512 last_ucwidth = ucwidth;
513 }
515 return string - *start;
516 }
519 #define DATE_INFO \
520 DATE_(NO), \
521 DATE_(DEFAULT), \
522 DATE_(LOCAL), \
523 DATE_(RELATIVE), \
524 DATE_(SHORT)
526 enum date {
527 #define DATE_(name) DATE_##name
528 DATE_INFO
529 #undef DATE_
530 };
532 static const struct enum_map date_map[] = {
533 #define DATE_(name) ENUM_MAP(#name, DATE_##name)
534 DATE_INFO
535 #undef DATE_
536 };
538 struct time {
539 time_t sec;
540 int tz;
541 };
543 static inline int timecmp(const struct time *t1, const struct time *t2)
544 {
545 return t1->sec - t2->sec;
546 }
548 static const char *
549 mkdate(const struct time *time, enum date date)
550 {
551 static char buf[DATE_COLS + 1];
552 static const struct enum_map reldate[] = {
553 { "second", 1, 60 * 2 },
554 { "minute", 60, 60 * 60 * 2 },
555 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
556 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
557 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
558 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
559 };
560 struct tm tm;
562 if (!date || !time || !time->sec)
563 return "";
565 if (date == DATE_RELATIVE) {
566 struct timeval now;
567 time_t date = time->sec + time->tz;
568 time_t seconds;
569 int i;
571 gettimeofday(&now, NULL);
572 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
573 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
574 if (seconds >= reldate[i].value)
575 continue;
577 seconds /= reldate[i].namelen;
578 if (!string_format(buf, "%ld %s%s %s",
579 seconds, reldate[i].name,
580 seconds > 1 ? "s" : "",
581 now.tv_sec >= date ? "ago" : "ahead"))
582 break;
583 return buf;
584 }
585 }
587 if (date == DATE_LOCAL) {
588 time_t date = time->sec + time->tz;
589 localtime_r(&date, &tm);
590 }
591 else {
592 gmtime_r(&time->sec, &tm);
593 }
594 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
595 }
598 #define AUTHOR_VALUES \
599 AUTHOR_(NO), \
600 AUTHOR_(FULL), \
601 AUTHOR_(ABBREVIATED)
603 enum author {
604 #define AUTHOR_(name) AUTHOR_##name
605 AUTHOR_VALUES,
606 #undef AUTHOR_
607 AUTHOR_DEFAULT = AUTHOR_FULL
608 };
610 static const struct enum_map author_map[] = {
611 #define AUTHOR_(name) ENUM_MAP(#name, AUTHOR_##name)
612 AUTHOR_VALUES
613 #undef AUTHOR_
614 };
616 static const char *
617 get_author_initials(const char *author)
618 {
619 static char initials[AUTHOR_COLS * 6 + 1];
620 size_t pos = 0;
621 const char *end = strchr(author, '\0');
623 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
625 memset(initials, 0, sizeof(initials));
626 while (author < end) {
627 unsigned char bytes;
628 size_t i;
630 while (is_initial_sep(*author))
631 author++;
633 bytes = utf8_char_length(author, end);
634 if (bytes < sizeof(initials) - 1 - pos) {
635 while (bytes--) {
636 initials[pos++] = *author++;
637 }
638 }
640 for (i = pos; author < end && !is_initial_sep(*author); author++) {
641 if (i < sizeof(initials) - 1)
642 initials[i++] = *author;
643 }
645 initials[i++] = 0;
646 }
648 return initials;
649 }
652 static bool
653 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
654 {
655 int valuelen;
657 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
658 bool advance = cmd[valuelen] != 0;
660 cmd[valuelen] = 0;
661 argv[(*argc)++] = chomp_string(cmd);
662 cmd = chomp_string(cmd + valuelen + advance);
663 }
665 if (*argc < SIZEOF_ARG)
666 argv[*argc] = NULL;
667 return *argc < SIZEOF_ARG;
668 }
670 static bool
671 argv_from_env(const char **argv, const char *name)
672 {
673 char *env = argv ? getenv(name) : NULL;
674 int argc = 0;
676 if (env && *env)
677 env = strdup(env);
678 return !env || argv_from_string(argv, &argc, env);
679 }
682 /*
683 * Executing external commands.
684 */
686 enum io_type {
687 IO_FD, /* File descriptor based IO. */
688 IO_BG, /* Execute command in the background. */
689 IO_FG, /* Execute command with same std{in,out,err}. */
690 IO_RD, /* Read only fork+exec IO. */
691 IO_WR, /* Write only fork+exec IO. */
692 IO_AP, /* Append fork+exec output to file. */
693 };
695 struct io {
696 enum io_type type; /* The requested type of pipe. */
697 const char *dir; /* Directory from which to execute. */
698 pid_t pid; /* PID of spawned process. */
699 int pipe; /* Pipe end for reading or writing. */
700 int error; /* Error status. */
701 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
702 char *buf; /* Read buffer. */
703 size_t bufalloc; /* Allocated buffer size. */
704 size_t bufsize; /* Buffer content size. */
705 char *bufpos; /* Current buffer position. */
706 unsigned int eof:1; /* Has end of file been reached. */
707 };
709 static void
710 io_reset(struct io *io)
711 {
712 io->pipe = -1;
713 io->pid = 0;
714 io->buf = io->bufpos = NULL;
715 io->bufalloc = io->bufsize = 0;
716 io->error = 0;
717 io->eof = 0;
718 }
720 static void
721 io_init(struct io *io, const char *dir, enum io_type type)
722 {
723 io_reset(io);
724 io->type = type;
725 io->dir = dir;
726 }
728 static bool
729 io_format(struct io *io, const char *dir, enum io_type type,
730 const char *argv[], enum format_flags flags)
731 {
732 io_init(io, dir, type);
733 return format_argv(io->argv, argv, flags);
734 }
736 static bool
737 io_open(struct io *io, const char *fmt, ...)
738 {
739 char name[SIZEOF_STR] = "";
740 bool fits;
741 va_list args;
743 io_init(io, NULL, IO_FD);
745 va_start(args, fmt);
746 fits = vsnprintf(name, sizeof(name), fmt, args) < sizeof(name);
747 va_end(args);
749 if (!fits) {
750 io->error = ENAMETOOLONG;
751 return FALSE;
752 }
753 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
754 if (io->pipe == -1)
755 io->error = errno;
756 return io->pipe != -1;
757 }
759 static bool
760 io_kill(struct io *io)
761 {
762 return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
763 }
765 static bool
766 io_done(struct io *io)
767 {
768 pid_t pid = io->pid;
770 if (io->pipe != -1)
771 close(io->pipe);
772 free(io->buf);
773 io_reset(io);
775 while (pid > 0) {
776 int status;
777 pid_t waiting = waitpid(pid, &status, 0);
779 if (waiting < 0) {
780 if (errno == EINTR)
781 continue;
782 io->error = errno;
783 return FALSE;
784 }
786 return waiting == pid &&
787 !WIFSIGNALED(status) &&
788 WIFEXITED(status) &&
789 !WEXITSTATUS(status);
790 }
792 return TRUE;
793 }
795 static bool
796 io_start(struct io *io)
797 {
798 int pipefds[2] = { -1, -1 };
800 if (io->type == IO_FD)
801 return TRUE;
803 if ((io->type == IO_RD || io->type == IO_WR) && pipe(pipefds) < 0) {
804 io->error = errno;
805 return FALSE;
806 } else if (io->type == IO_AP) {
807 pipefds[1] = io->pipe;
808 }
810 if ((io->pid = fork())) {
811 if (io->pid == -1)
812 io->error = errno;
813 if (pipefds[!(io->type == IO_WR)] != -1)
814 close(pipefds[!(io->type == IO_WR)]);
815 if (io->pid != -1) {
816 io->pipe = pipefds[!!(io->type == IO_WR)];
817 return TRUE;
818 }
820 } else {
821 if (io->type != IO_FG) {
822 int devnull = open("/dev/null", O_RDWR);
823 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
824 int writefd = (io->type == IO_RD || io->type == IO_AP)
825 ? pipefds[1] : devnull;
827 dup2(readfd, STDIN_FILENO);
828 dup2(writefd, STDOUT_FILENO);
829 dup2(devnull, STDERR_FILENO);
831 close(devnull);
832 if (pipefds[0] != -1)
833 close(pipefds[0]);
834 if (pipefds[1] != -1)
835 close(pipefds[1]);
836 }
838 if (io->dir && *io->dir && chdir(io->dir) == -1)
839 exit(errno);
841 execvp(io->argv[0], (char *const*) io->argv);
842 exit(errno);
843 }
845 if (pipefds[!!(io->type == IO_WR)] != -1)
846 close(pipefds[!!(io->type == IO_WR)]);
847 return FALSE;
848 }
850 static bool
851 io_run(struct io *io, const char **argv, const char *dir, enum io_type type)
852 {
853 io_init(io, dir, type);
854 if (!format_argv(io->argv, argv, FORMAT_NONE))
855 return FALSE;
856 return io_start(io);
857 }
859 static int
860 io_complete(struct io *io)
861 {
862 return io_start(io) && io_done(io);
863 }
865 static int
866 io_run_bg(const char **argv)
867 {
868 struct io io = {};
870 if (!io_format(&io, NULL, IO_BG, argv, FORMAT_NONE))
871 return FALSE;
872 return io_complete(&io);
873 }
875 static bool
876 io_run_fg(const char **argv, const char *dir)
877 {
878 struct io io = {};
880 if (!io_format(&io, dir, IO_FG, argv, FORMAT_NONE))
881 return FALSE;
882 return io_complete(&io);
883 }
885 static bool
886 io_run_append(const char **argv, enum format_flags flags, int fd)
887 {
888 struct io io = {};
890 if (!io_format(&io, NULL, IO_AP, argv, flags)) {
891 close(fd);
892 return FALSE;
893 }
895 io.pipe = fd;
896 return io_complete(&io);
897 }
899 static bool
900 io_run_rd(struct io *io, const char **argv, const char *dir, enum format_flags flags)
901 {
902 return io_format(io, dir, IO_RD, argv, flags) && io_start(io);
903 }
905 static bool
906 io_eof(struct io *io)
907 {
908 return io->eof;
909 }
911 static int
912 io_error(struct io *io)
913 {
914 return io->error;
915 }
917 static char *
918 io_strerror(struct io *io)
919 {
920 return strerror(io->error);
921 }
923 static bool
924 io_can_read(struct io *io)
925 {
926 struct timeval tv = { 0, 500 };
927 fd_set fds;
929 FD_ZERO(&fds);
930 FD_SET(io->pipe, &fds);
932 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
933 }
935 static ssize_t
936 io_read(struct io *io, void *buf, size_t bufsize)
937 {
938 do {
939 ssize_t readsize = read(io->pipe, buf, bufsize);
941 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
942 continue;
943 else if (readsize == -1)
944 io->error = errno;
945 else if (readsize == 0)
946 io->eof = 1;
947 return readsize;
948 } while (1);
949 }
951 DEFINE_ALLOCATOR(io_realloc_buf, char, BUFSIZ)
953 static char *
954 io_get(struct io *io, int c, bool can_read)
955 {
956 char *eol;
957 ssize_t readsize;
959 while (TRUE) {
960 if (io->bufsize > 0) {
961 eol = memchr(io->bufpos, c, io->bufsize);
962 if (eol) {
963 char *line = io->bufpos;
965 *eol = 0;
966 io->bufpos = eol + 1;
967 io->bufsize -= io->bufpos - line;
968 return line;
969 }
970 }
972 if (io_eof(io)) {
973 if (io->bufsize) {
974 io->bufpos[io->bufsize] = 0;
975 io->bufsize = 0;
976 return io->bufpos;
977 }
978 return NULL;
979 }
981 if (!can_read)
982 return NULL;
984 if (io->bufsize > 0 && io->bufpos > io->buf)
985 memmove(io->buf, io->bufpos, io->bufsize);
987 if (io->bufalloc == io->bufsize) {
988 if (!io_realloc_buf(&io->buf, io->bufalloc, BUFSIZ))
989 return NULL;
990 io->bufalloc += BUFSIZ;
991 }
993 io->bufpos = io->buf;
994 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
995 if (io_error(io))
996 return NULL;
997 io->bufsize += readsize;
998 }
999 }
1001 static bool
1002 io_write(struct io *io, const void *buf, size_t bufsize)
1003 {
1004 size_t written = 0;
1006 while (!io_error(io) && written < bufsize) {
1007 ssize_t size;
1009 size = write(io->pipe, buf + written, bufsize - written);
1010 if (size < 0 && (errno == EAGAIN || errno == EINTR))
1011 continue;
1012 else if (size == -1)
1013 io->error = errno;
1014 else
1015 written += size;
1016 }
1018 return written == bufsize;
1019 }
1021 static bool
1022 io_read_buf(struct io *io, char buf[], size_t bufsize)
1023 {
1024 char *result = io_get(io, '\n', TRUE);
1026 if (result) {
1027 result = chomp_string(result);
1028 string_ncopy_do(buf, bufsize, result, strlen(result));
1029 }
1031 return io_done(io) && result;
1032 }
1034 static bool
1035 io_run_buf(const char **argv, char buf[], size_t bufsize)
1036 {
1037 struct io io = {};
1039 return io_run_rd(&io, argv, NULL, FORMAT_NONE)
1040 && io_read_buf(&io, buf, bufsize);
1041 }
1043 static int
1044 io_load(struct io *io, const char *separators,
1045 int (*read_property)(char *, size_t, char *, size_t))
1046 {
1047 char *name;
1048 int state = OK;
1050 if (!io_start(io))
1051 return ERR;
1053 while (state == OK && (name = io_get(io, '\n', TRUE))) {
1054 char *value;
1055 size_t namelen;
1056 size_t valuelen;
1058 name = chomp_string(name);
1059 namelen = strcspn(name, separators);
1061 if (name[namelen]) {
1062 name[namelen] = 0;
1063 value = chomp_string(name + namelen + 1);
1064 valuelen = strlen(value);
1066 } else {
1067 value = "";
1068 valuelen = 0;
1069 }
1071 state = read_property(name, namelen, value, valuelen);
1072 }
1074 if (state != ERR && io_error(io))
1075 state = ERR;
1076 io_done(io);
1078 return state;
1079 }
1081 static int
1082 io_run_load(const char **argv, const char *separators,
1083 int (*read_property)(char *, size_t, char *, size_t))
1084 {
1085 struct io io = {};
1087 return io_format(&io, NULL, IO_RD, argv, FORMAT_NONE)
1088 ? io_load(&io, separators, read_property) : ERR;
1089 }
1092 /*
1093 * User requests
1094 */
1096 #define REQ_INFO \
1097 /* XXX: Keep the view request first and in sync with views[]. */ \
1098 REQ_GROUP("View switching") \
1099 REQ_(VIEW_MAIN, "Show main view"), \
1100 REQ_(VIEW_DIFF, "Show diff view"), \
1101 REQ_(VIEW_LOG, "Show log view"), \
1102 REQ_(VIEW_TREE, "Show tree view"), \
1103 REQ_(VIEW_BLOB, "Show blob view"), \
1104 REQ_(VIEW_BLAME, "Show blame view"), \
1105 REQ_(VIEW_BRANCH, "Show branch view"), \
1106 REQ_(VIEW_HELP, "Show help page"), \
1107 REQ_(VIEW_PAGER, "Show pager view"), \
1108 REQ_(VIEW_STATUS, "Show status view"), \
1109 REQ_(VIEW_STAGE, "Show stage view"), \
1110 \
1111 REQ_GROUP("View manipulation") \
1112 REQ_(ENTER, "Enter current line and scroll"), \
1113 REQ_(NEXT, "Move to next"), \
1114 REQ_(PREVIOUS, "Move to previous"), \
1115 REQ_(PARENT, "Move to parent"), \
1116 REQ_(VIEW_NEXT, "Move focus to next view"), \
1117 REQ_(REFRESH, "Reload and refresh"), \
1118 REQ_(MAXIMIZE, "Maximize the current view"), \
1119 REQ_(VIEW_CLOSE, "Close the current view"), \
1120 REQ_(QUIT, "Close all views and quit"), \
1121 \
1122 REQ_GROUP("View specific requests") \
1123 REQ_(STATUS_UPDATE, "Update file status"), \
1124 REQ_(STATUS_REVERT, "Revert file changes"), \
1125 REQ_(STATUS_MERGE, "Merge file using external tool"), \
1126 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
1127 \
1128 REQ_GROUP("Cursor navigation") \
1129 REQ_(MOVE_UP, "Move cursor one line up"), \
1130 REQ_(MOVE_DOWN, "Move cursor one line down"), \
1131 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
1132 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
1133 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
1134 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
1135 \
1136 REQ_GROUP("Scrolling") \
1137 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
1138 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
1139 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
1140 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
1141 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
1142 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
1143 \
1144 REQ_GROUP("Searching") \
1145 REQ_(SEARCH, "Search the view"), \
1146 REQ_(SEARCH_BACK, "Search backwards in the view"), \
1147 REQ_(FIND_NEXT, "Find next search match"), \
1148 REQ_(FIND_PREV, "Find previous search match"), \
1149 \
1150 REQ_GROUP("Option manipulation") \
1151 REQ_(OPTIONS, "Open option menu"), \
1152 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
1153 REQ_(TOGGLE_DATE, "Toggle date display"), \
1154 REQ_(TOGGLE_DATE_SHORT, "Toggle short (date-only) dates"), \
1155 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
1156 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
1157 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
1158 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
1159 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
1160 \
1161 REQ_GROUP("Misc") \
1162 REQ_(PROMPT, "Bring up the prompt"), \
1163 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
1164 REQ_(SHOW_VERSION, "Show version information"), \
1165 REQ_(STOP_LOADING, "Stop all loading views"), \
1166 REQ_(EDIT, "Open in editor"), \
1167 REQ_(NONE, "Do nothing")
1170 /* User action requests. */
1171 enum request {
1172 #define REQ_GROUP(help)
1173 #define REQ_(req, help) REQ_##req
1175 /* Offset all requests to avoid conflicts with ncurses getch values. */
1176 REQ_UNKNOWN = KEY_MAX + 1,
1177 REQ_OFFSET,
1178 REQ_INFO
1180 #undef REQ_GROUP
1181 #undef REQ_
1182 };
1184 struct request_info {
1185 enum request request;
1186 const char *name;
1187 int namelen;
1188 const char *help;
1189 };
1191 static const struct request_info req_info[] = {
1192 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
1193 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
1194 REQ_INFO
1195 #undef REQ_GROUP
1196 #undef REQ_
1197 };
1199 static enum request
1200 get_request(const char *name)
1201 {
1202 int namelen = strlen(name);
1203 int i;
1205 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1206 if (enum_equals(req_info[i], name, namelen))
1207 return req_info[i].request;
1209 return REQ_UNKNOWN;
1210 }
1213 /*
1214 * Options
1215 */
1217 /* Option and state variables. */
1218 static enum date opt_date = DATE_DEFAULT;
1219 static enum author opt_author = AUTHOR_DEFAULT;
1220 static bool opt_line_number = FALSE;
1221 static bool opt_line_graphics = TRUE;
1222 static bool opt_rev_graph = FALSE;
1223 static bool opt_show_refs = TRUE;
1224 static int opt_num_interval = 5;
1225 static double opt_hscroll = 0.50;
1226 static double opt_scale_split_view = 2.0 / 3.0;
1227 static int opt_tab_size = 8;
1228 static int opt_author_cols = AUTHOR_COLS;
1229 static char opt_path[SIZEOF_STR] = "";
1230 static char opt_file[SIZEOF_STR] = "";
1231 static char opt_ref[SIZEOF_REF] = "";
1232 static char opt_head[SIZEOF_REF] = "";
1233 static char opt_remote[SIZEOF_REF] = "";
1234 static char opt_encoding[20] = "UTF-8";
1235 static iconv_t opt_iconv_in = ICONV_NONE;
1236 static iconv_t opt_iconv_out = ICONV_NONE;
1237 static char opt_search[SIZEOF_STR] = "";
1238 static char opt_cdup[SIZEOF_STR] = "";
1239 static char opt_prefix[SIZEOF_STR] = "";
1240 static char opt_git_dir[SIZEOF_STR] = "";
1241 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
1242 static char opt_editor[SIZEOF_STR] = "";
1243 static FILE *opt_tty = NULL;
1245 #define is_initial_commit() (!get_ref_head())
1246 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
1249 /*
1250 * Line-oriented content detection.
1251 */
1253 #define LINE_INFO \
1254 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1255 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1256 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
1257 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
1258 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1259 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1260 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1261 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1262 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1263 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1264 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1265 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1266 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1267 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1268 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
1269 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1270 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1271 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1272 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1273 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1274 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
1275 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
1276 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1277 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1278 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
1279 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1280 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1281 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1282 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1283 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1284 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
1285 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
1286 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
1287 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1288 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
1289 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1290 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1291 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
1292 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
1293 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
1294 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
1295 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1296 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1297 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
1298 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1299 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
1300 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1301 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
1302 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
1303 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
1304 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1305 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1306 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
1307 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1308 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1309 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1310 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1311 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
1312 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
1314 enum line_type {
1315 #define LINE(type, line, fg, bg, attr) \
1316 LINE_##type
1317 LINE_INFO,
1318 LINE_NONE
1319 #undef LINE
1320 };
1322 struct line_info {
1323 const char *name; /* Option name. */
1324 int namelen; /* Size of option name. */
1325 const char *line; /* The start of line to match. */
1326 int linelen; /* Size of string to match. */
1327 int fg, bg, attr; /* Color and text attributes for the lines. */
1328 };
1330 static struct line_info line_info[] = {
1331 #define LINE(type, line, fg, bg, attr) \
1332 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
1333 LINE_INFO
1334 #undef LINE
1335 };
1337 static enum line_type
1338 get_line_type(const char *line)
1339 {
1340 int linelen = strlen(line);
1341 enum line_type type;
1343 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1344 /* Case insensitive search matches Signed-off-by lines better. */
1345 if (linelen >= line_info[type].linelen &&
1346 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
1347 return type;
1349 return LINE_DEFAULT;
1350 }
1352 static inline int
1353 get_line_attr(enum line_type type)
1354 {
1355 assert(type < ARRAY_SIZE(line_info));
1356 return COLOR_PAIR(type) | line_info[type].attr;
1357 }
1359 static struct line_info *
1360 get_line_info(const char *name)
1361 {
1362 size_t namelen = strlen(name);
1363 enum line_type type;
1365 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1366 if (enum_equals(line_info[type], name, namelen))
1367 return &line_info[type];
1369 return NULL;
1370 }
1372 static void
1373 init_colors(void)
1374 {
1375 int default_bg = line_info[LINE_DEFAULT].bg;
1376 int default_fg = line_info[LINE_DEFAULT].fg;
1377 enum line_type type;
1379 start_color();
1381 if (assume_default_colors(default_fg, default_bg) == ERR) {
1382 default_bg = COLOR_BLACK;
1383 default_fg = COLOR_WHITE;
1384 }
1386 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1387 struct line_info *info = &line_info[type];
1388 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1389 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1391 init_pair(type, fg, bg);
1392 }
1393 }
1395 struct line {
1396 enum line_type type;
1398 /* State flags */
1399 unsigned int selected:1;
1400 unsigned int dirty:1;
1401 unsigned int cleareol:1;
1402 unsigned int other:16;
1404 void *data; /* User data */
1405 };
1408 /*
1409 * Keys
1410 */
1412 struct keybinding {
1413 int alias;
1414 enum request request;
1415 };
1417 static struct keybinding default_keybindings[] = {
1418 /* View switching */
1419 { 'm', REQ_VIEW_MAIN },
1420 { 'd', REQ_VIEW_DIFF },
1421 { 'l', REQ_VIEW_LOG },
1422 { 't', REQ_VIEW_TREE },
1423 { 'f', REQ_VIEW_BLOB },
1424 { 'B', REQ_VIEW_BLAME },
1425 { 'H', REQ_VIEW_BRANCH },
1426 { 'p', REQ_VIEW_PAGER },
1427 { 'h', REQ_VIEW_HELP },
1428 { 'S', REQ_VIEW_STATUS },
1429 { 'c', REQ_VIEW_STAGE },
1431 /* View manipulation */
1432 { 'q', REQ_VIEW_CLOSE },
1433 { KEY_TAB, REQ_VIEW_NEXT },
1434 { KEY_RETURN, REQ_ENTER },
1435 { KEY_UP, REQ_PREVIOUS },
1436 { KEY_DOWN, REQ_NEXT },
1437 { 'R', REQ_REFRESH },
1438 { KEY_F(5), REQ_REFRESH },
1439 { 'O', REQ_MAXIMIZE },
1441 /* Cursor navigation */
1442 { 'k', REQ_MOVE_UP },
1443 { 'j', REQ_MOVE_DOWN },
1444 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1445 { KEY_END, REQ_MOVE_LAST_LINE },
1446 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1447 { ' ', REQ_MOVE_PAGE_DOWN },
1448 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1449 { 'b', REQ_MOVE_PAGE_UP },
1450 { '-', REQ_MOVE_PAGE_UP },
1452 /* Scrolling */
1453 { KEY_LEFT, REQ_SCROLL_LEFT },
1454 { KEY_RIGHT, REQ_SCROLL_RIGHT },
1455 { KEY_IC, REQ_SCROLL_LINE_UP },
1456 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1457 { 'w', REQ_SCROLL_PAGE_UP },
1458 { 's', REQ_SCROLL_PAGE_DOWN },
1460 /* Searching */
1461 { '/', REQ_SEARCH },
1462 { '?', REQ_SEARCH_BACK },
1463 { 'n', REQ_FIND_NEXT },
1464 { 'N', REQ_FIND_PREV },
1466 /* Misc */
1467 { 'Q', REQ_QUIT },
1468 { 'z', REQ_STOP_LOADING },
1469 { 'v', REQ_SHOW_VERSION },
1470 { 'r', REQ_SCREEN_REDRAW },
1471 { 'o', REQ_OPTIONS },
1472 { '.', REQ_TOGGLE_LINENO },
1473 { 'D', REQ_TOGGLE_DATE },
1474 { 'A', REQ_TOGGLE_AUTHOR },
1475 { 'g', REQ_TOGGLE_REV_GRAPH },
1476 { 'F', REQ_TOGGLE_REFS },
1477 { 'I', REQ_TOGGLE_SORT_ORDER },
1478 { 'i', REQ_TOGGLE_SORT_FIELD },
1479 { ':', REQ_PROMPT },
1480 { 'u', REQ_STATUS_UPDATE },
1481 { '!', REQ_STATUS_REVERT },
1482 { 'M', REQ_STATUS_MERGE },
1483 { '@', REQ_STAGE_NEXT },
1484 { ',', REQ_PARENT },
1485 { 'e', REQ_EDIT },
1486 };
1488 #define KEYMAP_INFO \
1489 KEYMAP_(GENERIC), \
1490 KEYMAP_(MAIN), \
1491 KEYMAP_(DIFF), \
1492 KEYMAP_(LOG), \
1493 KEYMAP_(TREE), \
1494 KEYMAP_(BLOB), \
1495 KEYMAP_(BLAME), \
1496 KEYMAP_(BRANCH), \
1497 KEYMAP_(PAGER), \
1498 KEYMAP_(HELP), \
1499 KEYMAP_(STATUS), \
1500 KEYMAP_(STAGE)
1502 enum keymap {
1503 #define KEYMAP_(name) KEYMAP_##name
1504 KEYMAP_INFO
1505 #undef KEYMAP_
1506 };
1508 static const struct enum_map keymap_table[] = {
1509 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
1510 KEYMAP_INFO
1511 #undef KEYMAP_
1512 };
1514 #define set_keymap(map, name) map_enum(map, keymap_table, name)
1516 struct keybinding_table {
1517 struct keybinding *data;
1518 size_t size;
1519 };
1521 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1523 static void
1524 add_keybinding(enum keymap keymap, enum request request, int key)
1525 {
1526 struct keybinding_table *table = &keybindings[keymap];
1527 size_t i;
1529 for (i = 0; i < keybindings[keymap].size; i++) {
1530 if (keybindings[keymap].data[i].alias == key) {
1531 keybindings[keymap].data[i].request = request;
1532 return;
1533 }
1534 }
1536 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1537 if (!table->data)
1538 die("Failed to allocate keybinding");
1539 table->data[table->size].alias = key;
1540 table->data[table->size++].request = request;
1542 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
1543 int i;
1545 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1546 if (default_keybindings[i].alias == key)
1547 default_keybindings[i].request = REQ_NONE;
1548 }
1549 }
1551 /* Looks for a key binding first in the given map, then in the generic map, and
1552 * lastly in the default keybindings. */
1553 static enum request
1554 get_keybinding(enum keymap keymap, int key)
1555 {
1556 size_t i;
1558 for (i = 0; i < keybindings[keymap].size; i++)
1559 if (keybindings[keymap].data[i].alias == key)
1560 return keybindings[keymap].data[i].request;
1562 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1563 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1564 return keybindings[KEYMAP_GENERIC].data[i].request;
1566 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1567 if (default_keybindings[i].alias == key)
1568 return default_keybindings[i].request;
1570 return (enum request) key;
1571 }
1574 struct key {
1575 const char *name;
1576 int value;
1577 };
1579 static const struct key key_table[] = {
1580 { "Enter", KEY_RETURN },
1581 { "Space", ' ' },
1582 { "Backspace", KEY_BACKSPACE },
1583 { "Tab", KEY_TAB },
1584 { "Escape", KEY_ESC },
1585 { "Left", KEY_LEFT },
1586 { "Right", KEY_RIGHT },
1587 { "Up", KEY_UP },
1588 { "Down", KEY_DOWN },
1589 { "Insert", KEY_IC },
1590 { "Delete", KEY_DC },
1591 { "Hash", '#' },
1592 { "Home", KEY_HOME },
1593 { "End", KEY_END },
1594 { "PageUp", KEY_PPAGE },
1595 { "PageDown", KEY_NPAGE },
1596 { "F1", KEY_F(1) },
1597 { "F2", KEY_F(2) },
1598 { "F3", KEY_F(3) },
1599 { "F4", KEY_F(4) },
1600 { "F5", KEY_F(5) },
1601 { "F6", KEY_F(6) },
1602 { "F7", KEY_F(7) },
1603 { "F8", KEY_F(8) },
1604 { "F9", KEY_F(9) },
1605 { "F10", KEY_F(10) },
1606 { "F11", KEY_F(11) },
1607 { "F12", KEY_F(12) },
1608 };
1610 static int
1611 get_key_value(const char *name)
1612 {
1613 int i;
1615 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1616 if (!strcasecmp(key_table[i].name, name))
1617 return key_table[i].value;
1619 if (strlen(name) == 1 && isprint(*name))
1620 return (int) *name;
1622 return ERR;
1623 }
1625 static const char *
1626 get_key_name(int key_value)
1627 {
1628 static char key_char[] = "'X'";
1629 const char *seq = NULL;
1630 int key;
1632 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1633 if (key_table[key].value == key_value)
1634 seq = key_table[key].name;
1636 if (seq == NULL &&
1637 key_value < 127 &&
1638 isprint(key_value)) {
1639 key_char[1] = (char) key_value;
1640 seq = key_char;
1641 }
1643 return seq ? seq : "(no key)";
1644 }
1646 static bool
1647 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
1648 {
1649 const char *sep = *pos > 0 ? ", " : "";
1650 const char *keyname = get_key_name(keybinding->alias);
1652 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
1653 }
1655 static bool
1656 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
1657 enum keymap keymap, bool all)
1658 {
1659 int i;
1661 for (i = 0; i < keybindings[keymap].size; i++) {
1662 if (keybindings[keymap].data[i].request == request) {
1663 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
1664 return FALSE;
1665 if (!all)
1666 break;
1667 }
1668 }
1670 return TRUE;
1671 }
1673 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
1675 static const char *
1676 get_keys(enum keymap keymap, enum request request, bool all)
1677 {
1678 static char buf[BUFSIZ];
1679 size_t pos = 0;
1680 int i;
1682 buf[pos] = 0;
1684 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
1685 return "Too many keybindings!";
1686 if (pos > 0 && !all)
1687 return buf;
1689 if (keymap != KEYMAP_GENERIC) {
1690 /* Only the generic keymap includes the default keybindings when
1691 * listing all keys. */
1692 if (all)
1693 return buf;
1695 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
1696 return "Too many keybindings!";
1697 if (pos)
1698 return buf;
1699 }
1701 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1702 if (default_keybindings[i].request == request) {
1703 if (!append_key(buf, &pos, &default_keybindings[i]))
1704 return "Too many keybindings!";
1705 if (!all)
1706 return buf;
1707 }
1708 }
1710 return buf;
1711 }
1713 struct run_request {
1714 enum keymap keymap;
1715 int key;
1716 const char *argv[SIZEOF_ARG];
1717 };
1719 static struct run_request *run_request;
1720 static size_t run_requests;
1722 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
1724 static enum request
1725 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1726 {
1727 struct run_request *req;
1729 if (argc >= ARRAY_SIZE(req->argv) - 1)
1730 return REQ_NONE;
1732 if (!realloc_run_requests(&run_request, run_requests, 1))
1733 return REQ_NONE;
1735 req = &run_request[run_requests];
1736 req->keymap = keymap;
1737 req->key = key;
1738 req->argv[0] = NULL;
1740 if (!format_argv(req->argv, argv, FORMAT_NONE))
1741 return REQ_NONE;
1743 return REQ_NONE + ++run_requests;
1744 }
1746 static struct run_request *
1747 get_run_request(enum request request)
1748 {
1749 if (request <= REQ_NONE)
1750 return NULL;
1751 return &run_request[request - REQ_NONE - 1];
1752 }
1754 static void
1755 add_builtin_run_requests(void)
1756 {
1757 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1758 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
1759 const char *commit[] = { "git", "commit", NULL };
1760 const char *gc[] = { "git", "gc", NULL };
1761 struct {
1762 enum keymap keymap;
1763 int key;
1764 int argc;
1765 const char **argv;
1766 } reqs[] = {
1767 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1768 { KEYMAP_STATUS, 'C', ARRAY_SIZE(commit) - 1, commit },
1769 { KEYMAP_BRANCH, 'C', ARRAY_SIZE(checkout) - 1, checkout },
1770 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1771 };
1772 int i;
1774 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1775 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
1777 if (req != reqs[i].key)
1778 continue;
1779 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1780 if (req != REQ_NONE)
1781 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1782 }
1783 }
1785 /*
1786 * User config file handling.
1787 */
1789 static int config_lineno;
1790 static bool config_errors;
1791 static const char *config_msg;
1793 static const struct enum_map color_map[] = {
1794 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1795 COLOR_MAP(DEFAULT),
1796 COLOR_MAP(BLACK),
1797 COLOR_MAP(BLUE),
1798 COLOR_MAP(CYAN),
1799 COLOR_MAP(GREEN),
1800 COLOR_MAP(MAGENTA),
1801 COLOR_MAP(RED),
1802 COLOR_MAP(WHITE),
1803 COLOR_MAP(YELLOW),
1804 };
1806 static const struct enum_map attr_map[] = {
1807 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1808 ATTR_MAP(NORMAL),
1809 ATTR_MAP(BLINK),
1810 ATTR_MAP(BOLD),
1811 ATTR_MAP(DIM),
1812 ATTR_MAP(REVERSE),
1813 ATTR_MAP(STANDOUT),
1814 ATTR_MAP(UNDERLINE),
1815 };
1817 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1819 static int parse_step(double *opt, const char *arg)
1820 {
1821 *opt = atoi(arg);
1822 if (!strchr(arg, '%'))
1823 return OK;
1825 /* "Shift down" so 100% and 1 does not conflict. */
1826 *opt = (*opt - 1) / 100;
1827 if (*opt >= 1.0) {
1828 *opt = 0.99;
1829 config_msg = "Step value larger than 100%";
1830 return ERR;
1831 }
1832 if (*opt < 0.0) {
1833 *opt = 1;
1834 config_msg = "Invalid step value";
1835 return ERR;
1836 }
1837 return OK;
1838 }
1840 static int
1841 parse_int(int *opt, const char *arg, int min, int max)
1842 {
1843 int value = atoi(arg);
1845 if (min <= value && value <= max) {
1846 *opt = value;
1847 return OK;
1848 }
1850 config_msg = "Integer value out of bound";
1851 return ERR;
1852 }
1854 static bool
1855 set_color(int *color, const char *name)
1856 {
1857 if (map_enum(color, color_map, name))
1858 return TRUE;
1859 if (!prefixcmp(name, "color"))
1860 return parse_int(color, name + 5, 0, 255) == OK;
1861 return FALSE;
1862 }
1864 /* Wants: object fgcolor bgcolor [attribute] */
1865 static int
1866 option_color_command(int argc, const char *argv[])
1867 {
1868 struct line_info *info;
1870 if (argc < 3) {
1871 config_msg = "Wrong number of arguments given to color command";
1872 return ERR;
1873 }
1875 info = get_line_info(argv[0]);
1876 if (!info) {
1877 static const struct enum_map obsolete[] = {
1878 ENUM_MAP("main-delim", LINE_DELIMITER),
1879 ENUM_MAP("main-date", LINE_DATE),
1880 ENUM_MAP("main-author", LINE_AUTHOR),
1881 };
1882 int index;
1884 if (!map_enum(&index, obsolete, argv[0])) {
1885 config_msg = "Unknown color name";
1886 return ERR;
1887 }
1888 info = &line_info[index];
1889 }
1891 if (!set_color(&info->fg, argv[1]) ||
1892 !set_color(&info->bg, argv[2])) {
1893 config_msg = "Unknown color";
1894 return ERR;
1895 }
1897 info->attr = 0;
1898 while (argc-- > 3) {
1899 int attr;
1901 if (!set_attribute(&attr, argv[argc])) {
1902 config_msg = "Unknown attribute";
1903 return ERR;
1904 }
1905 info->attr |= attr;
1906 }
1908 return OK;
1909 }
1911 static int parse_bool(bool *opt, const char *arg)
1912 {
1913 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1914 ? TRUE : FALSE;
1915 return OK;
1916 }
1918 static int parse_enum_do(unsigned int *opt, const char *arg,
1919 const struct enum_map *map, size_t map_size)
1920 {
1921 bool is_true;
1923 assert(map_size > 1);
1925 if (map_enum_do(map, map_size, (int *) opt, arg))
1926 return OK;
1928 if (parse_bool(&is_true, arg) != OK)
1929 return ERR;
1931 *opt = is_true ? map[1].value : map[0].value;
1932 return OK;
1933 }
1935 #define parse_enum(opt, arg, map) \
1936 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1938 static int
1939 parse_string(char *opt, const char *arg, size_t optsize)
1940 {
1941 int arglen = strlen(arg);
1943 switch (arg[0]) {
1944 case '\"':
1945 case '\'':
1946 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1947 config_msg = "Unmatched quotation";
1948 return ERR;
1949 }
1950 arg += 1; arglen -= 2;
1951 default:
1952 string_ncopy_do(opt, optsize, arg, arglen);
1953 return OK;
1954 }
1955 }
1957 /* Wants: name = value */
1958 static int
1959 option_set_command(int argc, const char *argv[])
1960 {
1961 if (argc != 3) {
1962 config_msg = "Wrong number of arguments given to set command";
1963 return ERR;
1964 }
1966 if (strcmp(argv[1], "=")) {
1967 config_msg = "No value assigned";
1968 return ERR;
1969 }
1971 if (!strcmp(argv[0], "show-author"))
1972 return parse_enum(&opt_author, argv[2], author_map);
1974 if (!strcmp(argv[0], "show-date"))
1975 return parse_enum(&opt_date, argv[2], date_map);
1977 if (!strcmp(argv[0], "show-rev-graph"))
1978 return parse_bool(&opt_rev_graph, argv[2]);
1980 if (!strcmp(argv[0], "show-refs"))
1981 return parse_bool(&opt_show_refs, argv[2]);
1983 if (!strcmp(argv[0], "show-line-numbers"))
1984 return parse_bool(&opt_line_number, argv[2]);
1986 if (!strcmp(argv[0], "line-graphics"))
1987 return parse_bool(&opt_line_graphics, argv[2]);
1989 if (!strcmp(argv[0], "line-number-interval"))
1990 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1992 if (!strcmp(argv[0], "author-width"))
1993 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1995 if (!strcmp(argv[0], "horizontal-scroll"))
1996 return parse_step(&opt_hscroll, argv[2]);
1998 if (!strcmp(argv[0], "split-view-height"))
1999 return parse_step(&opt_scale_split_view, argv[2]);
2001 if (!strcmp(argv[0], "tab-size"))
2002 return parse_int(&opt_tab_size, argv[2], 1, 1024);
2004 if (!strcmp(argv[0], "commit-encoding"))
2005 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
2007 config_msg = "Unknown variable name";
2008 return ERR;
2009 }
2011 /* Wants: mode request key */
2012 static int
2013 option_bind_command(int argc, const char *argv[])
2014 {
2015 enum request request;
2016 int keymap = -1;
2017 int key;
2019 if (argc < 3) {
2020 config_msg = "Wrong number of arguments given to bind command";
2021 return ERR;
2022 }
2024 if (!set_keymap(&keymap, argv[0])) {
2025 config_msg = "Unknown key map";
2026 return ERR;
2027 }
2029 key = get_key_value(argv[1]);
2030 if (key == ERR) {
2031 config_msg = "Unknown key";
2032 return ERR;
2033 }
2035 request = get_request(argv[2]);
2036 if (request == REQ_UNKNOWN) {
2037 static const struct enum_map obsolete[] = {
2038 ENUM_MAP("cherry-pick", REQ_NONE),
2039 ENUM_MAP("screen-resize", REQ_NONE),
2040 ENUM_MAP("tree-parent", REQ_PARENT),
2041 };
2042 int alias;
2044 if (map_enum(&alias, obsolete, argv[2])) {
2045 if (alias != REQ_NONE)
2046 add_keybinding(keymap, alias, key);
2047 config_msg = "Obsolete request name";
2048 return ERR;
2049 }
2050 }
2051 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
2052 request = add_run_request(keymap, key, argc - 2, argv + 2);
2053 if (request == REQ_UNKNOWN) {
2054 config_msg = "Unknown request name";
2055 return ERR;
2056 }
2058 add_keybinding(keymap, request, key);
2060 return OK;
2061 }
2063 static int
2064 set_option(const char *opt, char *value)
2065 {
2066 const char *argv[SIZEOF_ARG];
2067 int argc = 0;
2069 if (!argv_from_string(argv, &argc, value)) {
2070 config_msg = "Too many option arguments";
2071 return ERR;
2072 }
2074 if (!strcmp(opt, "color"))
2075 return option_color_command(argc, argv);
2077 if (!strcmp(opt, "set"))
2078 return option_set_command(argc, argv);
2080 if (!strcmp(opt, "bind"))
2081 return option_bind_command(argc, argv);
2083 config_msg = "Unknown option command";
2084 return ERR;
2085 }
2087 static int
2088 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
2089 {
2090 int status = OK;
2092 config_lineno++;
2093 config_msg = "Internal error";
2095 /* Check for comment markers, since read_properties() will
2096 * only ensure opt and value are split at first " \t". */
2097 optlen = strcspn(opt, "#");
2098 if (optlen == 0)
2099 return OK;
2101 if (opt[optlen] != 0) {
2102 config_msg = "No option value";
2103 status = ERR;
2105 } else {
2106 /* Look for comment endings in the value. */
2107 size_t len = strcspn(value, "#");
2109 if (len < valuelen) {
2110 valuelen = len;
2111 value[valuelen] = 0;
2112 }
2114 status = set_option(opt, value);
2115 }
2117 if (status == ERR) {
2118 warn("Error on line %d, near '%.*s': %s",
2119 config_lineno, (int) optlen, opt, config_msg);
2120 config_errors = TRUE;
2121 }
2123 /* Always keep going if errors are encountered. */
2124 return OK;
2125 }
2127 static void
2128 load_option_file(const char *path)
2129 {
2130 struct io io = {};
2132 /* It's OK that the file doesn't exist. */
2133 if (!io_open(&io, "%s", path))
2134 return;
2136 config_lineno = 0;
2137 config_errors = FALSE;
2139 if (io_load(&io, " \t", read_option) == ERR ||
2140 config_errors == TRUE)
2141 warn("Errors while loading %s.", path);
2142 }
2144 static int
2145 load_options(void)
2146 {
2147 const char *home = getenv("HOME");
2148 const char *tigrc_user = getenv("TIGRC_USER");
2149 const char *tigrc_system = getenv("TIGRC_SYSTEM");
2150 char buf[SIZEOF_STR];
2152 if (!tigrc_system)
2153 tigrc_system = SYSCONFDIR "/tigrc";
2154 load_option_file(tigrc_system);
2156 if (!tigrc_user) {
2157 if (!home || !string_format(buf, "%s/.tigrc", home))
2158 return ERR;
2159 tigrc_user = buf;
2160 }
2161 load_option_file(tigrc_user);
2163 /* Add _after_ loading config files to avoid adding run requests
2164 * that conflict with keybindings. */
2165 add_builtin_run_requests();
2167 return OK;
2168 }
2171 /*
2172 * The viewer
2173 */
2175 struct view;
2176 struct view_ops;
2178 /* The display array of active views and the index of the current view. */
2179 static struct view *display[2];
2180 static unsigned int current_view;
2182 #define foreach_displayed_view(view, i) \
2183 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
2185 #define displayed_views() (display[1] != NULL ? 2 : 1)
2187 /* Current head and commit ID */
2188 static char ref_blob[SIZEOF_REF] = "";
2189 static char ref_commit[SIZEOF_REF] = "HEAD";
2190 static char ref_head[SIZEOF_REF] = "HEAD";
2191 static char ref_branch[SIZEOF_REF] = "";
2193 enum view_type {
2194 VIEW_MAIN,
2195 VIEW_DIFF,
2196 VIEW_LOG,
2197 VIEW_TREE,
2198 VIEW_BLOB,
2199 VIEW_BLAME,
2200 VIEW_BRANCH,
2201 VIEW_HELP,
2202 VIEW_PAGER,
2203 VIEW_STATUS,
2204 VIEW_STAGE,
2205 };
2207 struct view {
2208 enum view_type type; /* View type */
2209 const char *name; /* View name */
2210 const char *cmd_env; /* Command line set via environment */
2211 const char *id; /* Points to either of ref_{head,commit,blob} */
2213 struct view_ops *ops; /* View operations */
2215 enum keymap keymap; /* What keymap does this view have */
2216 bool git_dir; /* Whether the view requires a git directory. */
2217 bool refresh; /* Whether the view supports refreshing. */
2219 char ref[SIZEOF_REF]; /* Hovered commit reference */
2220 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
2222 int height, width; /* The width and height of the main window */
2223 WINDOW *win; /* The main window */
2224 WINDOW *title; /* The title window living below the main window */
2226 /* Navigation */
2227 unsigned long offset; /* Offset of the window top */
2228 unsigned long yoffset; /* Offset from the window side. */
2229 unsigned long lineno; /* Current line number */
2230 unsigned long p_offset; /* Previous offset of the window top */
2231 unsigned long p_yoffset;/* Previous offset from the window side */
2232 unsigned long p_lineno; /* Previous current line number */
2233 bool p_restore; /* Should the previous position be restored. */
2235 /* Searching */
2236 char grep[SIZEOF_STR]; /* Search string */
2237 regex_t *regex; /* Pre-compiled regexp */
2239 /* If non-NULL, points to the view that opened this view. If this view
2240 * is closed tig will switch back to the parent view. */
2241 struct view *parent;
2242 struct view *prev;
2244 /* Buffering */
2245 size_t lines; /* Total number of lines */
2246 struct line *line; /* Line index */
2247 unsigned int digits; /* Number of digits in the lines member. */
2249 /* Drawing */
2250 struct line *curline; /* Line currently being drawn. */
2251 enum line_type curtype; /* Attribute currently used for drawing. */
2252 unsigned long col; /* Column when drawing. */
2253 bool has_scrolled; /* View was scrolled. */
2255 /* Loading */
2256 struct io io;
2257 struct io *pipe;
2258 time_t start_time;
2259 time_t update_secs;
2260 };
2262 struct view_ops {
2263 /* What type of content being displayed. Used in the title bar. */
2264 const char *type;
2265 /* Default command arguments. */
2266 const char **argv;
2267 /* Open and reads in all view content. */
2268 bool (*open)(struct view *view);
2269 /* Read one line; updates view->line. */
2270 bool (*read)(struct view *view, char *data);
2271 /* Draw one line; @lineno must be < view->height. */
2272 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
2273 /* Depending on view handle a special requests. */
2274 enum request (*request)(struct view *view, enum request request, struct line *line);
2275 /* Search for regexp in a line. */
2276 bool (*grep)(struct view *view, struct line *line);
2277 /* Select line */
2278 void (*select)(struct view *view, struct line *line);
2279 /* Prepare view for loading */
2280 bool (*prepare)(struct view *view);
2281 };
2283 static struct view_ops blame_ops;
2284 static struct view_ops blob_ops;
2285 static struct view_ops diff_ops;
2286 static struct view_ops help_ops;
2287 static struct view_ops log_ops;
2288 static struct view_ops main_ops;
2289 static struct view_ops pager_ops;
2290 static struct view_ops stage_ops;
2291 static struct view_ops status_ops;
2292 static struct view_ops tree_ops;
2293 static struct view_ops branch_ops;
2295 #define VIEW_STR(type, name, env, ref, ops, map, git, refresh) \
2296 { type, name, #env, ref, ops, map, git, refresh }
2298 #define VIEW_(id, name, ops, git, refresh, ref) \
2299 VIEW_STR(VIEW_##id, name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git, refresh)
2301 static struct view views[] = {
2302 VIEW_(MAIN, "main", &main_ops, TRUE, TRUE, ref_head),
2303 VIEW_(DIFF, "diff", &diff_ops, TRUE, FALSE, ref_commit),
2304 VIEW_(LOG, "log", &log_ops, TRUE, TRUE, ref_head),
2305 VIEW_(TREE, "tree", &tree_ops, TRUE, FALSE, ref_commit),
2306 VIEW_(BLOB, "blob", &blob_ops, TRUE, FALSE, ref_blob),
2307 VIEW_(BLAME, "blame", &blame_ops, TRUE, FALSE, ref_commit),
2308 VIEW_(BRANCH, "branch", &branch_ops, TRUE, TRUE, ref_head),
2309 VIEW_(HELP, "help", &help_ops, FALSE, FALSE, ""),
2310 VIEW_(PAGER, "pager", &pager_ops, FALSE, FALSE, "stdin"),
2311 VIEW_(STATUS, "status", &status_ops, TRUE, TRUE, ""),
2312 VIEW_(STAGE, "stage", &stage_ops, TRUE, TRUE, ""),
2313 };
2315 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
2317 #define foreach_view(view, i) \
2318 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2320 #define view_is_displayed(view) \
2321 (view == display[0] || view == display[1])
2323 static inline void
2324 set_view_attr(struct view *view, enum line_type type)
2325 {
2326 if (!view->curline->selected && view->curtype != type) {
2327 (void) wattrset(view->win, get_line_attr(type));
2328 wchgat(view->win, -1, 0, type, NULL);
2329 view->curtype = type;
2330 }
2331 }
2333 static int
2334 draw_chars(struct view *view, enum line_type type, const char *string,
2335 int max_len, bool use_tilde)
2336 {
2337 static char out_buffer[BUFSIZ * 2];
2338 int len = 0;
2339 int col = 0;
2340 int trimmed = FALSE;
2341 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
2343 if (max_len <= 0)
2344 return 0;
2346 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
2348 set_view_attr(view, type);
2349 if (len > 0) {
2350 if (opt_iconv_out != ICONV_NONE) {
2351 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
2352 size_t inlen = len + 1;
2354 char *outbuf = out_buffer;
2355 size_t outlen = sizeof(out_buffer);
2357 size_t ret;
2359 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
2360 if (ret != (size_t) -1) {
2361 string = out_buffer;
2362 len = sizeof(out_buffer) - outlen;
2363 }
2364 }
2366 waddnstr(view->win, string, len);
2367 }
2368 if (trimmed && use_tilde) {
2369 set_view_attr(view, LINE_DELIMITER);
2370 waddch(view->win, '~');
2371 col++;
2372 }
2374 return col;
2375 }
2377 static int
2378 draw_space(struct view *view, enum line_type type, int max, int spaces)
2379 {
2380 static char space[] = " ";
2381 int col = 0;
2383 spaces = MIN(max, spaces);
2385 while (spaces > 0) {
2386 int len = MIN(spaces, sizeof(space) - 1);
2388 col += draw_chars(view, type, space, len, FALSE);
2389 spaces -= len;
2390 }
2392 return col;
2393 }
2395 static bool
2396 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
2397 {
2398 view->col += draw_chars(view, type, string, view->width + view->yoffset - view->col, trim);
2399 return view->width + view->yoffset <= view->col;
2400 }
2402 static bool
2403 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
2404 {
2405 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
2406 int max = view->width + view->yoffset - view->col;
2407 int i;
2409 if (max < size)
2410 size = max;
2412 set_view_attr(view, type);
2413 /* Using waddch() instead of waddnstr() ensures that
2414 * they'll be rendered correctly for the cursor line. */
2415 for (i = skip; i < size; i++)
2416 waddch(view->win, graphic[i]);
2418 view->col += size;
2419 if (size < max && skip <= size)
2420 waddch(view->win, ' ');
2421 view->col++;
2423 return view->width + view->yoffset <= view->col;
2424 }
2426 static bool
2427 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
2428 {
2429 int max = MIN(view->width + view->yoffset - view->col, len);
2430 int col;
2432 if (text)
2433 col = draw_chars(view, type, text, max - 1, trim);
2434 else
2435 col = draw_space(view, type, max - 1, max - 1);
2437 view->col += col;
2438 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
2439 return view->width + view->yoffset <= view->col;
2440 }
2442 static bool
2443 draw_date(struct view *view, struct time *time)
2444 {
2445 const char *date = mkdate(time, opt_date);
2446 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
2448 return draw_field(view, LINE_DATE, date, cols, FALSE);
2449 }
2451 static bool
2452 draw_author(struct view *view, const char *author)
2453 {
2454 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
2455 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
2457 if (abbreviate && author)
2458 author = get_author_initials(author);
2460 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
2461 }
2463 static bool
2464 draw_mode(struct view *view, mode_t mode)
2465 {
2466 const char *str;
2468 if (S_ISDIR(mode))
2469 str = "drwxr-xr-x";
2470 else if (S_ISLNK(mode))
2471 str = "lrwxrwxrwx";
2472 else if (S_ISGITLINK(mode))
2473 str = "m---------";
2474 else if (S_ISREG(mode) && mode & S_IXUSR)
2475 str = "-rwxr-xr-x";
2476 else if (S_ISREG(mode))
2477 str = "-rw-r--r--";
2478 else
2479 str = "----------";
2481 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
2482 }
2484 static bool
2485 draw_lineno(struct view *view, unsigned int lineno)
2486 {
2487 char number[10];
2488 int digits3 = view->digits < 3 ? 3 : view->digits;
2489 int max = MIN(view->width + view->yoffset - view->col, digits3);
2490 char *text = NULL;
2491 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
2493 lineno += view->offset + 1;
2494 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2495 static char fmt[] = "%1ld";
2497 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2498 if (string_format(number, fmt, lineno))
2499 text = number;
2500 }
2501 if (text)
2502 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2503 else
2504 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
2505 return draw_graphic(view, LINE_DEFAULT, &separator, 1);
2506 }
2508 static bool
2509 draw_view_line(struct view *view, unsigned int lineno)
2510 {
2511 struct line *line;
2512 bool selected = (view->offset + lineno == view->lineno);
2514 assert(view_is_displayed(view));
2516 if (view->offset + lineno >= view->lines)
2517 return FALSE;
2519 line = &view->line[view->offset + lineno];
2521 wmove(view->win, lineno, 0);
2522 if (line->cleareol)
2523 wclrtoeol(view->win);
2524 view->col = 0;
2525 view->curline = line;
2526 view->curtype = LINE_NONE;
2527 line->selected = FALSE;
2528 line->dirty = line->cleareol = 0;
2530 if (selected) {
2531 set_view_attr(view, LINE_CURSOR);
2532 line->selected = TRUE;
2533 view->ops->select(view, line);
2534 }
2536 return view->ops->draw(view, line, lineno);
2537 }
2539 static void
2540 redraw_view_dirty(struct view *view)
2541 {
2542 bool dirty = FALSE;
2543 int lineno;
2545 for (lineno = 0; lineno < view->height; lineno++) {
2546 if (view->offset + lineno >= view->lines)
2547 break;
2548 if (!view->line[view->offset + lineno].dirty)
2549 continue;
2550 dirty = TRUE;
2551 if (!draw_view_line(view, lineno))
2552 break;
2553 }
2555 if (!dirty)
2556 return;
2557 wnoutrefresh(view->win);
2558 }
2560 static void
2561 redraw_view_from(struct view *view, int lineno)
2562 {
2563 assert(0 <= lineno && lineno < view->height);
2565 for (; lineno < view->height; lineno++) {
2566 if (!draw_view_line(view, lineno))
2567 break;
2568 }
2570 wnoutrefresh(view->win);
2571 }
2573 static void
2574 redraw_view(struct view *view)
2575 {
2576 werase(view->win);
2577 redraw_view_from(view, 0);
2578 }
2581 static void
2582 update_view_title(struct view *view)
2583 {
2584 char buf[SIZEOF_STR];
2585 char state[SIZEOF_STR];
2586 size_t bufpos = 0, statelen = 0;
2588 assert(view_is_displayed(view));
2590 if (view->type != VIEW_STATUS && view->lines) {
2591 unsigned int view_lines = view->offset + view->height;
2592 unsigned int lines = view->lines
2593 ? MIN(view_lines, view->lines) * 100 / view->lines
2594 : 0;
2596 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2597 view->ops->type,
2598 view->lineno + 1,
2599 view->lines,
2600 lines);
2602 }
2604 if (view->pipe) {
2605 time_t secs = time(NULL) - view->start_time;
2607 /* Three git seconds are a long time ... */
2608 if (secs > 2)
2609 string_format_from(state, &statelen, " loading %lds", secs);
2610 }
2612 string_format_from(buf, &bufpos, "[%s]", view->name);
2613 if (*view->ref && bufpos < view->width) {
2614 size_t refsize = strlen(view->ref);
2615 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2617 if (minsize < view->width)
2618 refsize = view->width - minsize + 7;
2619 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2620 }
2622 if (statelen && bufpos < view->width) {
2623 string_format_from(buf, &bufpos, "%s", state);
2624 }
2626 if (view == display[current_view])
2627 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2628 else
2629 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2631 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2632 wclrtoeol(view->title);
2633 wnoutrefresh(view->title);
2634 }
2636 static int
2637 apply_step(double step, int value)
2638 {
2639 if (step >= 1)
2640 return (int) step;
2641 value *= step + 0.01;
2642 return value ? value : 1;
2643 }
2645 static void
2646 resize_display(void)
2647 {
2648 int offset, i;
2649 struct view *base = display[0];
2650 struct view *view = display[1] ? display[1] : display[0];
2652 /* Setup window dimensions */
2654 getmaxyx(stdscr, base->height, base->width);
2656 /* Make room for the status window. */
2657 base->height -= 1;
2659 if (view != base) {
2660 /* Horizontal split. */
2661 view->width = base->width;
2662 view->height = apply_step(opt_scale_split_view, base->height);
2663 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
2664 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
2665 base->height -= view->height;
2667 /* Make room for the title bar. */
2668 view->height -= 1;
2669 }
2671 /* Make room for the title bar. */
2672 base->height -= 1;
2674 offset = 0;
2676 foreach_displayed_view (view, i) {
2677 if (!view->win) {
2678 view->win = newwin(view->height, 0, offset, 0);
2679 if (!view->win)
2680 die("Failed to create %s view", view->name);
2682 scrollok(view->win, FALSE);
2684 view->title = newwin(1, 0, offset + view->height, 0);
2685 if (!view->title)
2686 die("Failed to create title window");
2688 } else {
2689 wresize(view->win, view->height, view->width);
2690 mvwin(view->win, offset, 0);
2691 mvwin(view->title, offset + view->height, 0);
2692 }
2694 offset += view->height + 1;
2695 }
2696 }
2698 static void
2699 redraw_display(bool clear)
2700 {
2701 struct view *view;
2702 int i;
2704 foreach_displayed_view (view, i) {
2705 if (clear)
2706 wclear(view->win);
2707 redraw_view(view);
2708 update_view_title(view);
2709 }
2710 }
2712 static void
2713 toggle_enum_option_do(unsigned int *opt, const char *help,
2714 const struct enum_map *map, size_t size)
2715 {
2716 *opt = (*opt + 1) % size;
2717 redraw_display(FALSE);
2718 report("Displaying %s %s", enum_name(map[*opt]), help);
2719 }
2721 #define toggle_enum_option(opt, help, map) \
2722 toggle_enum_option_do(opt, help, map, ARRAY_SIZE(map))
2724 #define toggle_date() toggle_enum_option(&opt_date, "dates", date_map)
2725 #define toggle_author() toggle_enum_option(&opt_author, "author names", author_map)
2727 static void
2728 toggle_view_option(bool *option, const char *help)
2729 {
2730 *option = !*option;
2731 redraw_display(FALSE);
2732 report("%sabling %s", *option ? "En" : "Dis", help);
2733 }
2735 static void
2736 open_option_menu(void)
2737 {
2738 const struct menu_item menu[] = {
2739 { '.', "line numbers", &opt_line_number },
2740 { 'D', "date display", &opt_date },
2741 { 'A', "author display", &opt_author },
2742 { 'g', "revision graph display", &opt_rev_graph },
2743 { 'F', "reference display", &opt_show_refs },
2744 { 0 }
2745 };
2746 int selected = 0;
2748 if (prompt_menu("Toggle option", menu, &selected)) {
2749 if (menu[selected].data == &opt_date)
2750 toggle_date();
2751 else if (menu[selected].data == &opt_author)
2752 toggle_author();
2753 else
2754 toggle_view_option(menu[selected].data, menu[selected].text);
2755 }
2756 }
2758 static void
2759 maximize_view(struct view *view)
2760 {
2761 memset(display, 0, sizeof(display));
2762 current_view = 0;
2763 display[current_view] = view;
2764 resize_display();
2765 redraw_display(FALSE);
2766 report("");
2767 }
2770 /*
2771 * Navigation
2772 */
2774 static bool
2775 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2776 {
2777 if (lineno >= view->lines)
2778 lineno = view->lines > 0 ? view->lines - 1 : 0;
2780 if (offset > lineno || offset + view->height <= lineno) {
2781 unsigned long half = view->height / 2;
2783 if (lineno > half)
2784 offset = lineno - half;
2785 else
2786 offset = 0;
2787 }
2789 if (offset != view->offset || lineno != view->lineno) {
2790 view->offset = offset;
2791 view->lineno = lineno;
2792 return TRUE;
2793 }
2795 return FALSE;
2796 }
2798 /* Scrolling backend */
2799 static void
2800 do_scroll_view(struct view *view, int lines)
2801 {
2802 bool redraw_current_line = FALSE;
2804 /* The rendering expects the new offset. */
2805 view->offset += lines;
2807 assert(0 <= view->offset && view->offset < view->lines);
2808 assert(lines);
2810 /* Move current line into the view. */
2811 if (view->lineno < view->offset) {
2812 view->lineno = view->offset;
2813 redraw_current_line = TRUE;
2814 } else if (view->lineno >= view->offset + view->height) {
2815 view->lineno = view->offset + view->height - 1;
2816 redraw_current_line = TRUE;
2817 }
2819 assert(view->offset <= view->lineno && view->lineno < view->lines);
2821 /* Redraw the whole screen if scrolling is pointless. */
2822 if (view->height < ABS(lines)) {
2823 redraw_view(view);
2825 } else {
2826 int line = lines > 0 ? view->height - lines : 0;
2827 int end = line + ABS(lines);
2829 scrollok(view->win, TRUE);
2830 wscrl(view->win, lines);
2831 scrollok(view->win, FALSE);
2833 while (line < end && draw_view_line(view, line))
2834 line++;
2836 if (redraw_current_line)
2837 draw_view_line(view, view->lineno - view->offset);
2838 wnoutrefresh(view->win);
2839 }
2841 view->has_scrolled = TRUE;
2842 report("");
2843 }
2845 /* Scroll frontend */
2846 static void
2847 scroll_view(struct view *view, enum request request)
2848 {
2849 int lines = 1;
2851 assert(view_is_displayed(view));
2853 switch (request) {
2854 case REQ_SCROLL_LEFT:
2855 if (view->yoffset == 0) {
2856 report("Cannot scroll beyond the first column");
2857 return;
2858 }
2859 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2860 view->yoffset = 0;
2861 else
2862 view->yoffset -= apply_step(opt_hscroll, view->width);
2863 redraw_view_from(view, 0);
2864 report("");
2865 return;
2866 case REQ_SCROLL_RIGHT:
2867 view->yoffset += apply_step(opt_hscroll, view->width);
2868 redraw_view(view);
2869 report("");
2870 return;
2871 case REQ_SCROLL_PAGE_DOWN:
2872 lines = view->height;
2873 case REQ_SCROLL_LINE_DOWN:
2874 if (view->offset + lines > view->lines)
2875 lines = view->lines - view->offset;
2877 if (lines == 0 || view->offset + view->height >= view->lines) {
2878 report("Cannot scroll beyond the last line");
2879 return;
2880 }
2881 break;
2883 case REQ_SCROLL_PAGE_UP:
2884 lines = view->height;
2885 case REQ_SCROLL_LINE_UP:
2886 if (lines > view->offset)
2887 lines = view->offset;
2889 if (lines == 0) {
2890 report("Cannot scroll beyond the first line");
2891 return;
2892 }
2894 lines = -lines;
2895 break;
2897 default:
2898 die("request %d not handled in switch", request);
2899 }
2901 do_scroll_view(view, lines);
2902 }
2904 /* Cursor moving */
2905 static void
2906 move_view(struct view *view, enum request request)
2907 {
2908 int scroll_steps = 0;
2909 int steps;
2911 switch (request) {
2912 case REQ_MOVE_FIRST_LINE:
2913 steps = -view->lineno;
2914 break;
2916 case REQ_MOVE_LAST_LINE:
2917 steps = view->lines - view->lineno - 1;
2918 break;
2920 case REQ_MOVE_PAGE_UP:
2921 steps = view->height > view->lineno
2922 ? -view->lineno : -view->height;
2923 break;
2925 case REQ_MOVE_PAGE_DOWN:
2926 steps = view->lineno + view->height >= view->lines
2927 ? view->lines - view->lineno - 1 : view->height;
2928 break;
2930 case REQ_MOVE_UP:
2931 steps = -1;
2932 break;
2934 case REQ_MOVE_DOWN:
2935 steps = 1;
2936 break;
2938 default:
2939 die("request %d not handled in switch", request);
2940 }
2942 if (steps <= 0 && view->lineno == 0) {
2943 report("Cannot move beyond the first line");
2944 return;
2946 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2947 report("Cannot move beyond the last line");
2948 return;
2949 }
2951 /* Move the current line */
2952 view->lineno += steps;
2953 assert(0 <= view->lineno && view->lineno < view->lines);
2955 /* Check whether the view needs to be scrolled */
2956 if (view->lineno < view->offset ||
2957 view->lineno >= view->offset + view->height) {
2958 scroll_steps = steps;
2959 if (steps < 0 && -steps > view->offset) {
2960 scroll_steps = -view->offset;
2962 } else if (steps > 0) {
2963 if (view->lineno == view->lines - 1 &&
2964 view->lines > view->height) {
2965 scroll_steps = view->lines - view->offset - 1;
2966 if (scroll_steps >= view->height)
2967 scroll_steps -= view->height - 1;
2968 }
2969 }
2970 }
2972 if (!view_is_displayed(view)) {
2973 view->offset += scroll_steps;
2974 assert(0 <= view->offset && view->offset < view->lines);
2975 view->ops->select(view, &view->line[view->lineno]);
2976 return;
2977 }
2979 /* Repaint the old "current" line if we be scrolling */
2980 if (ABS(steps) < view->height)
2981 draw_view_line(view, view->lineno - steps - view->offset);
2983 if (scroll_steps) {
2984 do_scroll_view(view, scroll_steps);
2985 return;
2986 }
2988 /* Draw the current line */
2989 draw_view_line(view, view->lineno - view->offset);
2991 wnoutrefresh(view->win);
2992 report("");
2993 }
2996 /*
2997 * Searching
2998 */
3000 static void search_view(struct view *view, enum request request);
3002 static bool
3003 grep_text(struct view *view, const char *text[])
3004 {
3005 regmatch_t pmatch;
3006 size_t i;
3008 for (i = 0; text[i]; i++)
3009 if (*text[i] &&
3010 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
3011 return TRUE;
3012 return FALSE;
3013 }
3015 static void
3016 select_view_line(struct view *view, unsigned long lineno)
3017 {
3018 unsigned long old_lineno = view->lineno;
3019 unsigned long old_offset = view->offset;
3021 if (goto_view_line(view, view->offset, lineno)) {
3022 if (view_is_displayed(view)) {
3023 if (old_offset != view->offset) {
3024 redraw_view(view);
3025 } else {
3026 draw_view_line(view, old_lineno - view->offset);
3027 draw_view_line(view, view->lineno - view->offset);
3028 wnoutrefresh(view->win);
3029 }
3030 } else {
3031 view->ops->select(view, &view->line[view->lineno]);
3032 }
3033 }
3034 }
3036 static void
3037 find_next(struct view *view, enum request request)
3038 {
3039 unsigned long lineno = view->lineno;
3040 int direction;
3042 if (!*view->grep) {
3043 if (!*opt_search)
3044 report("No previous search");
3045 else
3046 search_view(view, request);
3047 return;
3048 }
3050 switch (request) {
3051 case REQ_SEARCH:
3052 case REQ_FIND_NEXT:
3053 direction = 1;
3054 break;
3056 case REQ_SEARCH_BACK:
3057 case REQ_FIND_PREV:
3058 direction = -1;
3059 break;
3061 default:
3062 return;
3063 }
3065 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
3066 lineno += direction;
3068 /* Note, lineno is unsigned long so will wrap around in which case it
3069 * will become bigger than view->lines. */
3070 for (; lineno < view->lines; lineno += direction) {
3071 if (view->ops->grep(view, &view->line[lineno])) {
3072 select_view_line(view, lineno);
3073 report("Line %ld matches '%s'", lineno + 1, view->grep);
3074 return;
3075 }
3076 }
3078 report("No match found for '%s'", view->grep);
3079 }
3081 static void
3082 search_view(struct view *view, enum request request)
3083 {
3084 int regex_err;
3086 if (view->regex) {
3087 regfree(view->regex);
3088 *view->grep = 0;
3089 } else {
3090 view->regex = calloc(1, sizeof(*view->regex));
3091 if (!view->regex)
3092 return;
3093 }
3095 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
3096 if (regex_err != 0) {
3097 char buf[SIZEOF_STR] = "unknown error";
3099 regerror(regex_err, view->regex, buf, sizeof(buf));
3100 report("Search failed: %s", buf);
3101 return;
3102 }
3104 string_copy(view->grep, opt_search);
3106 find_next(view, request);
3107 }
3109 /*
3110 * Incremental updating
3111 */
3113 static void
3114 reset_view(struct view *view)
3115 {
3116 int i;
3118 for (i = 0; i < view->lines; i++)
3119 free(view->line[i].data);
3120 free(view->line);
3122 view->p_offset = view->offset;
3123 view->p_yoffset = view->yoffset;
3124 view->p_lineno = view->lineno;
3126 view->line = NULL;
3127 view->offset = 0;
3128 view->yoffset = 0;
3129 view->lines = 0;
3130 view->lineno = 0;
3131 view->vid[0] = 0;
3132 view->update_secs = 0;
3133 }
3135 static void
3136 free_argv(const char *argv[])
3137 {
3138 int argc;
3140 for (argc = 0; argv[argc]; argc++)
3141 free((void *) argv[argc]);
3142 }
3144 static const char *
3145 format_arg(const char *name)
3146 {
3147 static struct {
3148 const char *name;
3149 size_t namelen;
3150 const char *value;
3151 const char *value_if_empty;
3152 } vars[] = {
3153 #define FORMAT_VAR(name, value, value_if_empty) \
3154 { name, STRING_SIZE(name), value, value_if_empty }
3155 FORMAT_VAR("%(directory)", opt_path, ""),
3156 FORMAT_VAR("%(file)", opt_file, ""),
3157 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
3158 FORMAT_VAR("%(head)", ref_head, ""),
3159 FORMAT_VAR("%(commit)", ref_commit, ""),
3160 FORMAT_VAR("%(blob)", ref_blob, ""),
3161 FORMAT_VAR("%(branch)", ref_branch, ""),
3162 };
3163 int i;
3165 for (i = 0; i < ARRAY_SIZE(vars); i++)
3166 if (!strncmp(name, vars[i].name, vars[i].namelen))
3167 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
3169 report("Unknown replacement: `%s`", name);
3170 return NULL;
3171 }
3173 static bool
3174 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
3175 {
3176 char buf[SIZEOF_STR];
3177 int argc;
3178 bool noreplace = flags == FORMAT_NONE;
3180 free_argv(dst_argv);
3182 for (argc = 0; src_argv[argc]; argc++) {
3183 const char *arg = src_argv[argc];
3184 size_t bufpos = 0;
3186 while (arg) {
3187 char *next = strstr(arg, "%(");
3188 int len = next - arg;
3189 const char *value;
3191 if (!next || noreplace) {
3192 len = strlen(arg);
3193 value = "";
3195 } else {
3196 value = format_arg(next);
3198 if (!value) {
3199 return FALSE;
3200 }
3201 }
3203 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
3204 return FALSE;
3206 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
3207 }
3209 dst_argv[argc] = strdup(buf);
3210 if (!dst_argv[argc])
3211 break;
3212 }
3214 dst_argv[argc] = NULL;
3216 return src_argv[argc] == NULL;
3217 }
3219 static bool
3220 restore_view_position(struct view *view)
3221 {
3222 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
3223 return FALSE;
3225 /* Changing the view position cancels the restoring. */
3226 /* FIXME: Changing back to the first line is not detected. */
3227 if (view->offset != 0 || view->lineno != 0) {
3228 view->p_restore = FALSE;
3229 return FALSE;
3230 }
3232 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
3233 view_is_displayed(view))
3234 werase(view->win);
3236 view->yoffset = view->p_yoffset;
3237 view->p_restore = FALSE;
3239 return TRUE;
3240 }
3242 static void
3243 end_update(struct view *view, bool force)
3244 {
3245 if (!view->pipe)
3246 return;
3247 while (!view->ops->read(view, NULL))
3248 if (!force)
3249 return;
3250 if (force)
3251 io_kill(view->pipe);
3252 io_done(view->pipe);
3253 view->pipe = NULL;
3254 }
3256 static void
3257 setup_update(struct view *view, const char *vid)
3258 {
3259 reset_view(view);
3260 string_copy_rev(view->vid, vid);
3261 view->pipe = &view->io;
3262 view->start_time = time(NULL);
3263 }
3265 static bool
3266 prepare_update(struct view *view, const char *argv[], const char *dir)
3267 {
3268 if (view->pipe)
3269 end_update(view, TRUE);
3270 return io_format(&view->io, dir, IO_RD, argv, FORMAT_NONE);
3271 }
3273 static bool
3274 prepare_update_file(struct view *view, const char *name)
3275 {
3276 if (view->pipe)
3277 end_update(view, TRUE);
3278 return io_open(&view->io, "%s/%s", opt_cdup[0] ? opt_cdup : ".", name);
3279 }
3281 static bool
3282 begin_update(struct view *view, bool refresh)
3283 {
3284 if (view->pipe)
3285 end_update(view, TRUE);
3287 if (!refresh) {
3288 if (view->ops->prepare) {
3289 if (!view->ops->prepare(view))
3290 return FALSE;
3291 } else if (!io_format(&view->io, NULL, IO_RD, view->ops->argv, FORMAT_ALL)) {
3292 return FALSE;
3293 }
3295 /* Put the current ref_* value to the view title ref
3296 * member. This is needed by the blob view. Most other
3297 * views sets it automatically after loading because the
3298 * first line is a commit line. */
3299 string_copy_rev(view->ref, view->id);
3300 }
3302 if (!io_start(&view->io))
3303 return FALSE;
3305 setup_update(view, view->id);
3307 return TRUE;
3308 }
3310 static bool
3311 update_view(struct view *view)
3312 {
3313 char out_buffer[BUFSIZ * 2];
3314 char *line;
3315 /* Clear the view and redraw everything since the tree sorting
3316 * might have rearranged things. */
3317 bool redraw = view->lines == 0;
3318 bool can_read = TRUE;
3320 if (!view->pipe)
3321 return TRUE;
3323 if (!io_can_read(view->pipe)) {
3324 if (view->lines == 0 && view_is_displayed(view)) {
3325 time_t secs = time(NULL) - view->start_time;
3327 if (secs > 1 && secs > view->update_secs) {
3328 if (view->update_secs == 0)
3329 redraw_view(view);
3330 update_view_title(view);
3331 view->update_secs = secs;
3332 }
3333 }
3334 return TRUE;
3335 }
3337 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
3338 if (opt_iconv_in != ICONV_NONE) {
3339 ICONV_CONST char *inbuf = line;
3340 size_t inlen = strlen(line) + 1;
3342 char *outbuf = out_buffer;
3343 size_t outlen = sizeof(out_buffer);
3345 size_t ret;
3347 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
3348 if (ret != (size_t) -1)
3349 line = out_buffer;
3350 }
3352 if (!view->ops->read(view, line)) {
3353 report("Allocation failure");
3354 end_update(view, TRUE);
3355 return FALSE;
3356 }
3357 }
3359 {
3360 unsigned long lines = view->lines;
3361 int digits;
3363 for (digits = 0; lines; digits++)
3364 lines /= 10;
3366 /* Keep the displayed view in sync with line number scaling. */
3367 if (digits != view->digits) {
3368 view->digits = digits;
3369 if (opt_line_number || view->type == VIEW_BLAME)
3370 redraw = TRUE;
3371 }
3372 }
3374 if (io_error(view->pipe)) {
3375 report("Failed to read: %s", io_strerror(view->pipe));
3376 end_update(view, TRUE);
3378 } else if (io_eof(view->pipe)) {
3379 if (view_is_displayed(view))
3380 report("");
3381 end_update(view, FALSE);
3382 }
3384 if (restore_view_position(view))
3385 redraw = TRUE;
3387 if (!view_is_displayed(view))
3388 return TRUE;
3390 if (redraw)
3391 redraw_view_from(view, 0);
3392 else
3393 redraw_view_dirty(view);
3395 /* Update the title _after_ the redraw so that if the redraw picks up a
3396 * commit reference in view->ref it'll be available here. */
3397 update_view_title(view);
3398 return TRUE;
3399 }
3401 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
3403 static struct line *
3404 add_line_data(struct view *view, void *data, enum line_type type)
3405 {
3406 struct line *line;
3408 if (!realloc_lines(&view->line, view->lines, 1))
3409 return NULL;
3411 line = &view->line[view->lines++];
3412 memset(line, 0, sizeof(*line));
3413 line->type = type;
3414 line->data = data;
3415 line->dirty = 1;
3417 return line;
3418 }
3420 static struct line *
3421 add_line_text(struct view *view, const char *text, enum line_type type)
3422 {
3423 char *data = text ? strdup(text) : NULL;
3425 return data ? add_line_data(view, data, type) : NULL;
3426 }
3428 static struct line *
3429 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
3430 {
3431 char buf[SIZEOF_STR];
3432 va_list args;
3434 va_start(args, fmt);
3435 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
3436 buf[0] = 0;
3437 va_end(args);
3439 return buf[0] ? add_line_text(view, buf, type) : NULL;
3440 }
3442 /*
3443 * View opening
3444 */
3446 enum open_flags {
3447 OPEN_DEFAULT = 0, /* Use default view switching. */
3448 OPEN_SPLIT = 1, /* Split current view. */
3449 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
3450 OPEN_REFRESH = 16, /* Refresh view using previous command. */
3451 OPEN_PREPARED = 32, /* Open already prepared command. */
3452 };
3454 static void
3455 open_view(struct view *prev, enum request request, enum open_flags flags)
3456 {
3457 bool split = !!(flags & OPEN_SPLIT);
3458 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
3459 bool nomaximize = !!(flags & OPEN_REFRESH);
3460 struct view *view = VIEW(request);
3461 int nviews = displayed_views();
3462 struct view *base_view = display[0];
3464 if (view == prev && nviews == 1 && !reload) {
3465 report("Already in %s view", view->name);
3466 return;
3467 }
3469 if (view->git_dir && !opt_git_dir[0]) {
3470 report("The %s view is disabled in pager view", view->name);
3471 return;
3472 }
3474 if (split) {
3475 display[1] = view;
3476 current_view = 1;
3477 view->parent = prev;
3478 } else if (!nomaximize) {
3479 /* Maximize the current view. */
3480 memset(display, 0, sizeof(display));
3481 current_view = 0;
3482 display[current_view] = view;
3483 }
3485 /* No prev signals that this is the first loaded view. */
3486 if (prev && view != prev) {
3487 view->prev = prev;
3488 }
3490 /* Resize the view when switching between split- and full-screen,
3491 * or when switching between two different full-screen views. */
3492 if (nviews != displayed_views() ||
3493 (nviews == 1 && base_view != display[0]))
3494 resize_display();
3496 if (view->ops->open) {
3497 if (view->pipe)
3498 end_update(view, TRUE);
3499 if (!view->ops->open(view)) {
3500 report("Failed to load %s view", view->name);
3501 return;
3502 }
3503 restore_view_position(view);
3505 } else if ((reload || strcmp(view->vid, view->id)) &&
3506 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3507 report("Failed to load %s view", view->name);
3508 return;
3509 }
3511 if (split && prev->lineno - prev->offset >= prev->height) {
3512 /* Take the title line into account. */
3513 int lines = prev->lineno - prev->offset - prev->height + 1;
3515 /* Scroll the view that was split if the current line is
3516 * outside the new limited view. */
3517 do_scroll_view(prev, lines);
3518 }
3520 if (prev && view != prev && split && view_is_displayed(prev)) {
3521 /* "Blur" the previous view. */
3522 update_view_title(prev);
3523 }
3525 if (view->pipe && view->lines == 0) {
3526 /* Clear the old view and let the incremental updating refill
3527 * the screen. */
3528 werase(view->win);
3529 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3530 report("");
3531 } else if (view_is_displayed(view)) {
3532 redraw_view(view);
3533 report("");
3534 }
3535 }
3537 static void
3538 open_external_viewer(const char *argv[], const char *dir)
3539 {
3540 def_prog_mode(); /* save current tty modes */
3541 endwin(); /* restore original tty modes */
3542 io_run_fg(argv, dir);
3543 fprintf(stderr, "Press Enter to continue");
3544 getc(opt_tty);
3545 reset_prog_mode();
3546 redraw_display(TRUE);
3547 }
3549 static void
3550 open_mergetool(const char *file)
3551 {
3552 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3554 open_external_viewer(mergetool_argv, opt_cdup);
3555 }
3557 static void
3558 open_editor(const char *file)
3559 {
3560 const char *editor_argv[] = { "vi", file, NULL };
3561 const char *editor;
3563 editor = getenv("GIT_EDITOR");
3564 if (!editor && *opt_editor)
3565 editor = opt_editor;
3566 if (!editor)
3567 editor = getenv("VISUAL");
3568 if (!editor)
3569 editor = getenv("EDITOR");
3570 if (!editor)
3571 editor = "vi";
3573 editor_argv[0] = editor;
3574 open_external_viewer(editor_argv, opt_cdup);
3575 }
3577 static void
3578 open_run_request(enum request request)
3579 {
3580 struct run_request *req = get_run_request(request);
3581 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3583 if (!req) {
3584 report("Unknown run request");
3585 return;
3586 }
3588 if (format_argv(argv, req->argv, FORMAT_ALL))
3589 open_external_viewer(argv, NULL);
3590 free_argv(argv);
3591 }
3593 /*
3594 * User request switch noodle
3595 */
3597 static int
3598 view_driver(struct view *view, enum request request)
3599 {
3600 int i;
3602 if (request == REQ_NONE)
3603 return TRUE;
3605 if (request > REQ_NONE) {
3606 open_run_request(request);
3607 /* FIXME: When all views can refresh always do this. */
3608 if (view->refresh)
3609 request = REQ_REFRESH;
3610 else
3611 return TRUE;
3612 }
3614 if (view && view->lines) {
3615 request = view->ops->request(view, request, &view->line[view->lineno]);
3616 if (request == REQ_NONE)
3617 return TRUE;
3618 }
3620 switch (request) {
3621 case REQ_MOVE_UP:
3622 case REQ_MOVE_DOWN:
3623 case REQ_MOVE_PAGE_UP:
3624 case REQ_MOVE_PAGE_DOWN:
3625 case REQ_MOVE_FIRST_LINE:
3626 case REQ_MOVE_LAST_LINE:
3627 move_view(view, request);
3628 break;
3630 case REQ_SCROLL_LEFT:
3631 case REQ_SCROLL_RIGHT:
3632 case REQ_SCROLL_LINE_DOWN:
3633 case REQ_SCROLL_LINE_UP:
3634 case REQ_SCROLL_PAGE_DOWN:
3635 case REQ_SCROLL_PAGE_UP:
3636 scroll_view(view, request);
3637 break;
3639 case REQ_VIEW_BLAME:
3640 if (!opt_file[0]) {
3641 report("No file chosen, press %s to open tree view",
3642 get_key(view->keymap, REQ_VIEW_TREE));
3643 break;
3644 }
3645 open_view(view, request, OPEN_DEFAULT);
3646 break;
3648 case REQ_VIEW_BLOB:
3649 if (!ref_blob[0]) {
3650 report("No file chosen, press %s to open tree view",
3651 get_key(view->keymap, REQ_VIEW_TREE));
3652 break;
3653 }
3654 open_view(view, request, OPEN_DEFAULT);
3655 break;
3657 case REQ_VIEW_PAGER:
3658 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3659 report("No pager content, press %s to run command from prompt",
3660 get_key(view->keymap, REQ_PROMPT));
3661 break;
3662 }
3663 open_view(view, request, OPEN_DEFAULT);
3664 break;
3666 case REQ_VIEW_STAGE:
3667 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3668 report("No stage content, press %s to open the status view and choose file",
3669 get_key(view->keymap, REQ_VIEW_STATUS));
3670 break;
3671 }
3672 open_view(view, request, OPEN_DEFAULT);
3673 break;
3675 case REQ_VIEW_STATUS:
3676 if (opt_is_inside_work_tree == FALSE) {
3677 report("The status view requires a working tree");
3678 break;
3679 }
3680 open_view(view, request, OPEN_DEFAULT);
3681 break;
3683 case REQ_VIEW_MAIN:
3684 case REQ_VIEW_DIFF:
3685 case REQ_VIEW_LOG:
3686 case REQ_VIEW_TREE:
3687 case REQ_VIEW_HELP:
3688 case REQ_VIEW_BRANCH:
3689 open_view(view, request, OPEN_DEFAULT);
3690 break;
3692 case REQ_NEXT:
3693 case REQ_PREVIOUS:
3694 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3696 if (view->parent) {
3697 int line;
3699 view = view->parent;
3700 line = view->lineno;
3701 move_view(view, request);
3702 if (view_is_displayed(view))
3703 update_view_title(view);
3704 if (line != view->lineno)
3705 view->ops->request(view, REQ_ENTER,
3706 &view->line[view->lineno]);
3708 } else {
3709 move_view(view, request);
3710 }
3711 break;
3713 case REQ_VIEW_NEXT:
3714 {
3715 int nviews = displayed_views();
3716 int next_view = (current_view + 1) % nviews;
3718 if (next_view == current_view) {
3719 report("Only one view is displayed");
3720 break;
3721 }
3723 current_view = next_view;
3724 /* Blur out the title of the previous view. */
3725 update_view_title(view);
3726 report("");
3727 break;
3728 }
3729 case REQ_REFRESH:
3730 report("Refreshing is not yet supported for the %s view", view->name);
3731 break;
3733 case REQ_MAXIMIZE:
3734 if (displayed_views() == 2)
3735 maximize_view(view);
3736 break;
3738 case REQ_OPTIONS:
3739 open_option_menu();
3740 break;
3742 case REQ_TOGGLE_LINENO:
3743 toggle_view_option(&opt_line_number, "line numbers");
3744 break;
3746 case REQ_TOGGLE_DATE:
3747 toggle_date();
3748 break;
3750 case REQ_TOGGLE_AUTHOR:
3751 toggle_author();
3752 break;
3754 case REQ_TOGGLE_REV_GRAPH:
3755 toggle_view_option(&opt_rev_graph, "revision graph display");
3756 break;
3758 case REQ_TOGGLE_REFS:
3759 toggle_view_option(&opt_show_refs, "reference display");
3760 break;
3762 case REQ_TOGGLE_SORT_FIELD:
3763 case REQ_TOGGLE_SORT_ORDER:
3764 report("Sorting is not yet supported for the %s view", view->name);
3765 break;
3767 case REQ_SEARCH:
3768 case REQ_SEARCH_BACK:
3769 search_view(view, request);
3770 break;
3772 case REQ_FIND_NEXT:
3773 case REQ_FIND_PREV:
3774 find_next(view, request);
3775 break;
3777 case REQ_STOP_LOADING:
3778 foreach_view(view, i) {
3779 if (view->pipe)
3780 report("Stopped loading the %s view", view->name),
3781 end_update(view, TRUE);
3782 }
3783 break;
3785 case REQ_SHOW_VERSION:
3786 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3787 return TRUE;
3789 case REQ_SCREEN_REDRAW:
3790 redraw_display(TRUE);
3791 break;
3793 case REQ_EDIT:
3794 report("Nothing to edit");
3795 break;
3797 case REQ_ENTER:
3798 report("Nothing to enter");
3799 break;
3801 case REQ_VIEW_CLOSE:
3802 /* XXX: Mark closed views by letting view->prev point to the
3803 * view itself. Parents to closed view should never be
3804 * followed. */
3805 if (view->prev && view->prev != view) {
3806 maximize_view(view->prev);
3807 view->prev = view;
3808 break;
3809 }
3810 /* Fall-through */
3811 case REQ_QUIT:
3812 return FALSE;
3814 default:
3815 report("Unknown key, press %s for help",
3816 get_key(view->keymap, REQ_VIEW_HELP));
3817 return TRUE;
3818 }
3820 return TRUE;
3821 }
3824 /*
3825 * View backend utilities
3826 */
3828 enum sort_field {
3829 ORDERBY_NAME,
3830 ORDERBY_DATE,
3831 ORDERBY_AUTHOR,
3832 };
3834 struct sort_state {
3835 const enum sort_field *fields;
3836 size_t size, current;
3837 bool reverse;
3838 };
3840 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3841 #define get_sort_field(state) ((state).fields[(state).current])
3842 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3844 static void
3845 sort_view(struct view *view, enum request request, struct sort_state *state,
3846 int (*compare)(const void *, const void *))
3847 {
3848 switch (request) {
3849 case REQ_TOGGLE_SORT_FIELD:
3850 state->current = (state->current + 1) % state->size;
3851 break;
3853 case REQ_TOGGLE_SORT_ORDER:
3854 state->reverse = !state->reverse;
3855 break;
3856 default:
3857 die("Not a sort request");
3858 }
3860 qsort(view->line, view->lines, sizeof(*view->line), compare);
3861 redraw_view(view);
3862 }
3864 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3866 /* Small author cache to reduce memory consumption. It uses binary
3867 * search to lookup or find place to position new entries. No entries
3868 * are ever freed. */
3869 static const char *
3870 get_author(const char *name)
3871 {
3872 static const char **authors;
3873 static size_t authors_size;
3874 int from = 0, to = authors_size - 1;
3876 while (from <= to) {
3877 size_t pos = (to + from) / 2;
3878 int cmp = strcmp(name, authors[pos]);
3880 if (!cmp)
3881 return authors[pos];
3883 if (cmp < 0)
3884 to = pos - 1;
3885 else
3886 from = pos + 1;
3887 }
3889 if (!realloc_authors(&authors, authors_size, 1))
3890 return NULL;
3891 name = strdup(name);
3892 if (!name)
3893 return NULL;
3895 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3896 authors[from] = name;
3897 authors_size++;
3899 return name;
3900 }
3902 static void
3903 parse_timesec(struct time *time, const char *sec)
3904 {
3905 time->sec = (time_t) atol(sec);
3906 }
3908 static void
3909 parse_timezone(struct time *time, const char *zone)
3910 {
3911 long tz;
3913 tz = ('0' - zone[1]) * 60 * 60 * 10;
3914 tz += ('0' - zone[2]) * 60 * 60;
3915 tz += ('0' - zone[3]) * 60 * 10;
3916 tz += ('0' - zone[4]) * 60;
3918 if (zone[0] == '-')
3919 tz = -tz;
3921 time->tz = tz;
3922 time->sec -= tz;
3923 }
3925 /* Parse author lines where the name may be empty:
3926 * author <email@address.tld> 1138474660 +0100
3927 */
3928 static void
3929 parse_author_line(char *ident, const char **author, struct time *time)
3930 {
3931 char *nameend = strchr(ident, '<');
3932 char *emailend = strchr(ident, '>');
3934 if (nameend && emailend)
3935 *nameend = *emailend = 0;
3936 ident = chomp_string(ident);
3937 if (!*ident) {
3938 if (nameend)
3939 ident = chomp_string(nameend + 1);
3940 if (!*ident)
3941 ident = "Unknown";
3942 }
3944 *author = get_author(ident);
3946 /* Parse epoch and timezone */
3947 if (emailend && emailend[1] == ' ') {
3948 char *secs = emailend + 2;
3949 char *zone = strchr(secs, ' ');
3951 parse_timesec(time, secs);
3953 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3954 parse_timezone(time, zone + 1);
3955 }
3956 }
3958 static bool
3959 open_commit_parent_menu(char buf[SIZEOF_STR], int *parents)
3960 {
3961 char rev[SIZEOF_REV];
3962 const char *revlist_argv[] = {
3963 "git", "log", "--no-color", "-1", "--pretty=format:%s", rev, NULL
3964 };
3965 struct menu_item *items;
3966 char text[SIZEOF_STR];
3967 bool ok = TRUE;
3968 int i;
3970 items = calloc(*parents + 1, sizeof(*items));
3971 if (!items)
3972 return FALSE;
3974 for (i = 0; i < *parents; i++) {
3975 string_copy_rev(rev, &buf[SIZEOF_REV * i]);
3976 if (!io_run_buf(revlist_argv, text, sizeof(text)) ||
3977 !(items[i].text = strdup(text))) {
3978 ok = FALSE;
3979 break;
3980 }
3981 }
3983 if (ok) {
3984 *parents = 0;
3985 ok = prompt_menu("Select parent", items, parents);
3986 }
3987 for (i = 0; items[i].text; i++)
3988 free((char *) items[i].text);
3989 free(items);
3990 return ok;
3991 }
3993 static bool
3994 select_commit_parent(const char *id, char rev[SIZEOF_REV], const char *path)
3995 {
3996 char buf[SIZEOF_STR * 4];
3997 const char *revlist_argv[] = {
3998 "git", "log", "--no-color", "-1",
3999 "--pretty=format:%P", id, "--", path, NULL
4000 };
4001 int parents;
4003 if (!io_run_buf(revlist_argv, buf, sizeof(buf)) ||
4004 (parents = strlen(buf) / 40) < 0) {
4005 report("Failed to get parent information");
4006 return FALSE;
4008 } else if (parents == 0) {
4009 if (path)
4010 report("Path '%s' does not exist in the parent", path);
4011 else
4012 report("The selected commit has no parents");
4013 return FALSE;
4014 }
4016 if (parents == 1)
4017 parents = 0;
4018 else if (!open_commit_parent_menu(buf, &parents))
4019 return FALSE;
4021 string_copy_rev(rev, &buf[41 * parents]);
4022 return TRUE;
4023 }
4025 /*
4026 * Pager backend
4027 */
4029 static bool
4030 pager_draw(struct view *view, struct line *line, unsigned int lineno)
4031 {
4032 char text[SIZEOF_STR];
4034 if (opt_line_number && draw_lineno(view, lineno))
4035 return TRUE;
4037 string_expand(text, sizeof(text), line->data, opt_tab_size);
4038 draw_text(view, line->type, text, TRUE);
4039 return TRUE;
4040 }
4042 static bool
4043 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
4044 {
4045 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
4046 char ref[SIZEOF_STR];
4048 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
4049 return TRUE;
4051 /* This is the only fatal call, since it can "corrupt" the buffer. */
4052 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
4053 return FALSE;
4055 return TRUE;
4056 }
4058 static void
4059 add_pager_refs(struct view *view, struct line *line)
4060 {
4061 char buf[SIZEOF_STR];
4062 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
4063 struct ref_list *list;
4064 size_t bufpos = 0, i;
4065 const char *sep = "Refs: ";
4066 bool is_tag = FALSE;
4068 assert(line->type == LINE_COMMIT);
4070 list = get_ref_list(commit_id);
4071 if (!list) {
4072 if (view->type == VIEW_DIFF)
4073 goto try_add_describe_ref;
4074 return;
4075 }
4077 for (i = 0; i < list->size; i++) {
4078 struct ref *ref = list->refs[i];
4079 const char *fmt = ref->tag ? "%s[%s]" :
4080 ref->remote ? "%s<%s>" : "%s%s";
4082 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
4083 return;
4084 sep = ", ";
4085 if (ref->tag)
4086 is_tag = TRUE;
4087 }
4089 if (!is_tag && view->type == VIEW_DIFF) {
4090 try_add_describe_ref:
4091 /* Add <tag>-g<commit_id> "fake" reference. */
4092 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
4093 return;
4094 }
4096 if (bufpos == 0)
4097 return;
4099 add_line_text(view, buf, LINE_PP_REFS);
4100 }
4102 static bool
4103 pager_read(struct view *view, char *data)
4104 {
4105 struct line *line;
4107 if (!data)
4108 return TRUE;
4110 line = add_line_text(view, data, get_line_type(data));
4111 if (!line)
4112 return FALSE;
4114 if (line->type == LINE_COMMIT &&
4115 (view->type == VIEW_DIFF ||
4116 view->type == VIEW_LOG))
4117 add_pager_refs(view, line);
4119 return TRUE;
4120 }
4122 static enum request
4123 pager_request(struct view *view, enum request request, struct line *line)
4124 {
4125 int split = 0;
4127 if (request != REQ_ENTER)
4128 return request;
4130 if (line->type == LINE_COMMIT &&
4131 (view->type == VIEW_LOG ||
4132 view->type == VIEW_PAGER)) {
4133 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
4134 split = 1;
4135 }
4137 /* Always scroll the view even if it was split. That way
4138 * you can use Enter to scroll through the log view and
4139 * split open each commit diff. */
4140 scroll_view(view, REQ_SCROLL_LINE_DOWN);
4142 /* FIXME: A minor workaround. Scrolling the view will call report("")
4143 * but if we are scrolling a non-current view this won't properly
4144 * update the view title. */
4145 if (split)
4146 update_view_title(view);
4148 return REQ_NONE;
4149 }
4151 static bool
4152 pager_grep(struct view *view, struct line *line)
4153 {
4154 const char *text[] = { line->data, NULL };
4156 return grep_text(view, text);
4157 }
4159 static void
4160 pager_select(struct view *view, struct line *line)
4161 {
4162 if (line->type == LINE_COMMIT) {
4163 char *text = (char *)line->data + STRING_SIZE("commit ");
4165 if (view->type != VIEW_PAGER)
4166 string_copy_rev(view->ref, text);
4167 string_copy_rev(ref_commit, text);
4168 }
4169 }
4171 static struct view_ops pager_ops = {
4172 "line",
4173 NULL,
4174 NULL,
4175 pager_read,
4176 pager_draw,
4177 pager_request,
4178 pager_grep,
4179 pager_select,
4180 };
4182 static const char *log_argv[SIZEOF_ARG] = {
4183 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
4184 };
4186 static enum request
4187 log_request(struct view *view, enum request request, struct line *line)
4188 {
4189 switch (request) {
4190 case REQ_REFRESH:
4191 load_refs();
4192 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
4193 return REQ_NONE;
4194 default:
4195 return pager_request(view, request, line);
4196 }
4197 }
4199 static struct view_ops log_ops = {
4200 "line",
4201 log_argv,
4202 NULL,
4203 pager_read,
4204 pager_draw,
4205 log_request,
4206 pager_grep,
4207 pager_select,
4208 };
4210 static const char *diff_argv[SIZEOF_ARG] = {
4211 "git", "show", "--pretty=fuller", "--no-color", "--root",
4212 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
4213 };
4215 static struct view_ops diff_ops = {
4216 "line",
4217 diff_argv,
4218 NULL,
4219 pager_read,
4220 pager_draw,
4221 pager_request,
4222 pager_grep,
4223 pager_select,
4224 };
4226 /*
4227 * Help backend
4228 */
4230 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
4232 static bool
4233 help_open_keymap_title(struct view *view, enum keymap keymap)
4234 {
4235 struct line *line;
4237 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
4238 help_keymap_hidden[keymap] ? '+' : '-',
4239 enum_name(keymap_table[keymap]));
4240 if (line)
4241 line->other = keymap;
4243 return help_keymap_hidden[keymap];
4244 }
4246 static void
4247 help_open_keymap(struct view *view, enum keymap keymap)
4248 {
4249 const char *group = NULL;
4250 char buf[SIZEOF_STR];
4251 size_t bufpos;
4252 bool add_title = TRUE;
4253 int i;
4255 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
4256 const char *key = NULL;
4258 if (req_info[i].request == REQ_NONE)
4259 continue;
4261 if (!req_info[i].request) {
4262 group = req_info[i].help;
4263 continue;
4264 }
4266 key = get_keys(keymap, req_info[i].request, TRUE);
4267 if (!key || !*key)
4268 continue;
4270 if (add_title && help_open_keymap_title(view, keymap))
4271 return;
4272 add_title = FALSE;
4274 if (group) {
4275 add_line_text(view, group, LINE_HELP_GROUP);
4276 group = NULL;
4277 }
4279 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
4280 enum_name(req_info[i]), req_info[i].help);
4281 }
4283 group = "External commands:";
4285 for (i = 0; i < run_requests; i++) {
4286 struct run_request *req = get_run_request(REQ_NONE + i + 1);
4287 const char *key;
4288 int argc;
4290 if (!req || req->keymap != keymap)
4291 continue;
4293 key = get_key_name(req->key);
4294 if (!*key)
4295 key = "(no key defined)";
4297 if (add_title && help_open_keymap_title(view, keymap))
4298 return;
4299 if (group) {
4300 add_line_text(view, group, LINE_HELP_GROUP);
4301 group = NULL;
4302 }
4304 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
4305 if (!string_format_from(buf, &bufpos, "%s%s",
4306 argc ? " " : "", req->argv[argc]))
4307 return;
4309 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
4310 }
4311 }
4313 static bool
4314 help_open(struct view *view)
4315 {
4316 enum keymap keymap;
4318 reset_view(view);
4319 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
4320 add_line_text(view, "", LINE_DEFAULT);
4322 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
4323 help_open_keymap(view, keymap);
4325 return TRUE;
4326 }
4328 static enum request
4329 help_request(struct view *view, enum request request, struct line *line)
4330 {
4331 switch (request) {
4332 case REQ_ENTER:
4333 if (line->type == LINE_HELP_KEYMAP) {
4334 help_keymap_hidden[line->other] =
4335 !help_keymap_hidden[line->other];
4336 view->p_restore = TRUE;
4337 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
4338 }
4340 return REQ_NONE;
4341 default:
4342 return pager_request(view, request, line);
4343 }
4344 }
4346 static struct view_ops help_ops = {
4347 "line",
4348 NULL,
4349 help_open,
4350 NULL,
4351 pager_draw,
4352 help_request,
4353 pager_grep,
4354 pager_select,
4355 };
4358 /*
4359 * Tree backend
4360 */
4362 struct tree_stack_entry {
4363 struct tree_stack_entry *prev; /* Entry below this in the stack */
4364 unsigned long lineno; /* Line number to restore */
4365 char *name; /* Position of name in opt_path */
4366 };
4368 /* The top of the path stack. */
4369 static struct tree_stack_entry *tree_stack = NULL;
4370 unsigned long tree_lineno = 0;
4372 static void
4373 pop_tree_stack_entry(void)
4374 {
4375 struct tree_stack_entry *entry = tree_stack;
4377 tree_lineno = entry->lineno;
4378 entry->name[0] = 0;
4379 tree_stack = entry->prev;
4380 free(entry);
4381 }
4383 static void
4384 push_tree_stack_entry(const char *name, unsigned long lineno)
4385 {
4386 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
4387 size_t pathlen = strlen(opt_path);
4389 if (!entry)
4390 return;
4392 entry->prev = tree_stack;
4393 entry->name = opt_path + pathlen;
4394 tree_stack = entry;
4396 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
4397 pop_tree_stack_entry();
4398 return;
4399 }
4401 /* Move the current line to the first tree entry. */
4402 tree_lineno = 1;
4403 entry->lineno = lineno;
4404 }
4406 /* Parse output from git-ls-tree(1):
4407 *
4408 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
4409 */
4411 #define SIZEOF_TREE_ATTR \
4412 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
4414 #define SIZEOF_TREE_MODE \
4415 STRING_SIZE("100644 ")
4417 #define TREE_ID_OFFSET \
4418 STRING_SIZE("100644 blob ")
4420 struct tree_entry {
4421 char id[SIZEOF_REV];
4422 mode_t mode;
4423 struct time time; /* Date from the author ident. */
4424 const char *author; /* Author of the commit. */
4425 char name[1];
4426 };
4428 static const char *
4429 tree_path(const struct line *line)
4430 {
4431 return ((struct tree_entry *) line->data)->name;
4432 }
4434 static int
4435 tree_compare_entry(const struct line *line1, const struct line *line2)
4436 {
4437 if (line1->type != line2->type)
4438 return line1->type == LINE_TREE_DIR ? -1 : 1;
4439 return strcmp(tree_path(line1), tree_path(line2));
4440 }
4442 static const enum sort_field tree_sort_fields[] = {
4443 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4444 };
4445 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
4447 static int
4448 tree_compare(const void *l1, const void *l2)
4449 {
4450 const struct line *line1 = (const struct line *) l1;
4451 const struct line *line2 = (const struct line *) l2;
4452 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
4453 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
4455 if (line1->type == LINE_TREE_HEAD)
4456 return -1;
4457 if (line2->type == LINE_TREE_HEAD)
4458 return 1;
4460 switch (get_sort_field(tree_sort_state)) {
4461 case ORDERBY_DATE:
4462 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
4464 case ORDERBY_AUTHOR:
4465 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
4467 case ORDERBY_NAME:
4468 default:
4469 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
4470 }
4471 }
4474 static struct line *
4475 tree_entry(struct view *view, enum line_type type, const char *path,
4476 const char *mode, const char *id)
4477 {
4478 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
4479 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
4481 if (!entry || !line) {
4482 free(entry);
4483 return NULL;
4484 }
4486 strncpy(entry->name, path, strlen(path));
4487 if (mode)
4488 entry->mode = strtoul(mode, NULL, 8);
4489 if (id)
4490 string_copy_rev(entry->id, id);
4492 return line;
4493 }
4495 static bool
4496 tree_read_date(struct view *view, char *text, bool *read_date)
4497 {
4498 static const char *author_name;
4499 static struct time author_time;
4501 if (!text && *read_date) {
4502 *read_date = FALSE;
4503 return TRUE;
4505 } else if (!text) {
4506 char *path = *opt_path ? opt_path : ".";
4507 /* Find next entry to process */
4508 const char *log_file[] = {
4509 "git", "log", "--no-color", "--pretty=raw",
4510 "--cc", "--raw", view->id, "--", path, NULL
4511 };
4512 struct io io = {};
4514 if (!view->lines) {
4515 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
4516 report("Tree is empty");
4517 return TRUE;
4518 }
4520 if (!io_run_rd(&io, log_file, opt_cdup, FORMAT_NONE)) {
4521 report("Failed to load tree data");
4522 return TRUE;
4523 }
4525 io_done(view->pipe);
4526 view->io = io;
4527 *read_date = TRUE;
4528 return FALSE;
4530 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
4531 parse_author_line(text + STRING_SIZE("author "),
4532 &author_name, &author_time);
4534 } else if (*text == ':') {
4535 char *pos;
4536 size_t annotated = 1;
4537 size_t i;
4539 pos = strchr(text, '\t');
4540 if (!pos)
4541 return TRUE;
4542 text = pos + 1;
4543 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
4544 text += strlen(opt_path);
4545 pos = strchr(text, '/');
4546 if (pos)
4547 *pos = 0;
4549 for (i = 1; i < view->lines; i++) {
4550 struct line *line = &view->line[i];
4551 struct tree_entry *entry = line->data;
4553 annotated += !!entry->author;
4554 if (entry->author || strcmp(entry->name, text))
4555 continue;
4557 entry->author = author_name;
4558 entry->time = author_time;
4559 line->dirty = 1;
4560 break;
4561 }
4563 if (annotated == view->lines)
4564 io_kill(view->pipe);
4565 }
4566 return TRUE;
4567 }
4569 static bool
4570 tree_read(struct view *view, char *text)
4571 {
4572 static bool read_date = FALSE;
4573 struct tree_entry *data;
4574 struct line *entry, *line;
4575 enum line_type type;
4576 size_t textlen = text ? strlen(text) : 0;
4577 char *path = text + SIZEOF_TREE_ATTR;
4579 if (read_date || !text)
4580 return tree_read_date(view, text, &read_date);
4582 if (textlen <= SIZEOF_TREE_ATTR)
4583 return FALSE;
4584 if (view->lines == 0 &&
4585 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
4586 return FALSE;
4588 /* Strip the path part ... */
4589 if (*opt_path) {
4590 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
4591 size_t striplen = strlen(opt_path);
4593 if (pathlen > striplen)
4594 memmove(path, path + striplen,
4595 pathlen - striplen + 1);
4597 /* Insert "link" to parent directory. */
4598 if (view->lines == 1 &&
4599 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
4600 return FALSE;
4601 }
4603 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
4604 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
4605 if (!entry)
4606 return FALSE;
4607 data = entry->data;
4609 /* Skip "Directory ..." and ".." line. */
4610 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4611 if (tree_compare_entry(line, entry) <= 0)
4612 continue;
4614 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4616 line->data = data;
4617 line->type = type;
4618 for (; line <= entry; line++)
4619 line->dirty = line->cleareol = 1;
4620 return TRUE;
4621 }
4623 if (tree_lineno > view->lineno) {
4624 view->lineno = tree_lineno;
4625 tree_lineno = 0;
4626 }
4628 return TRUE;
4629 }
4631 static bool
4632 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4633 {
4634 struct tree_entry *entry = line->data;
4636 if (line->type == LINE_TREE_HEAD) {
4637 if (draw_text(view, line->type, "Directory path /", TRUE))
4638 return TRUE;
4639 } else {
4640 if (draw_mode(view, entry->mode))
4641 return TRUE;
4643 if (opt_author && draw_author(view, entry->author))
4644 return TRUE;
4646 if (opt_date && draw_date(view, &entry->time))
4647 return TRUE;
4648 }
4649 if (draw_text(view, line->type, entry->name, TRUE))
4650 return TRUE;
4651 return TRUE;
4652 }
4654 static void
4655 open_blob_editor()
4656 {
4657 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4658 int fd = mkstemp(file);
4660 if (fd == -1)
4661 report("Failed to create temporary file");
4662 else if (!io_run_append(blob_ops.argv, FORMAT_ALL, fd))
4663 report("Failed to save blob data to file");
4664 else
4665 open_editor(file);
4666 if (fd != -1)
4667 unlink(file);
4668 }
4670 static enum request
4671 tree_request(struct view *view, enum request request, struct line *line)
4672 {
4673 enum open_flags flags;
4675 switch (request) {
4676 case REQ_VIEW_BLAME:
4677 if (line->type != LINE_TREE_FILE) {
4678 report("Blame only supported for files");
4679 return REQ_NONE;
4680 }
4682 string_copy(opt_ref, view->vid);
4683 return request;
4685 case REQ_EDIT:
4686 if (line->type != LINE_TREE_FILE) {
4687 report("Edit only supported for files");
4688 } else if (!is_head_commit(view->vid)) {
4689 open_blob_editor();
4690 } else {
4691 open_editor(opt_file);
4692 }
4693 return REQ_NONE;
4695 case REQ_TOGGLE_SORT_FIELD:
4696 case REQ_TOGGLE_SORT_ORDER:
4697 sort_view(view, request, &tree_sort_state, tree_compare);
4698 return REQ_NONE;
4700 case REQ_PARENT:
4701 if (!*opt_path) {
4702 /* quit view if at top of tree */
4703 return REQ_VIEW_CLOSE;
4704 }
4705 /* fake 'cd ..' */
4706 line = &view->line[1];
4707 break;
4709 case REQ_ENTER:
4710 break;
4712 default:
4713 return request;
4714 }
4716 /* Cleanup the stack if the tree view is at a different tree. */
4717 while (!*opt_path && tree_stack)
4718 pop_tree_stack_entry();
4720 switch (line->type) {
4721 case LINE_TREE_DIR:
4722 /* Depending on whether it is a subdirectory or parent link
4723 * mangle the path buffer. */
4724 if (line == &view->line[1] && *opt_path) {
4725 pop_tree_stack_entry();
4727 } else {
4728 const char *basename = tree_path(line);
4730 push_tree_stack_entry(basename, view->lineno);
4731 }
4733 /* Trees and subtrees share the same ID, so they are not not
4734 * unique like blobs. */
4735 flags = OPEN_RELOAD;
4736 request = REQ_VIEW_TREE;
4737 break;
4739 case LINE_TREE_FILE:
4740 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4741 request = REQ_VIEW_BLOB;
4742 break;
4744 default:
4745 return REQ_NONE;
4746 }
4748 open_view(view, request, flags);
4749 if (request == REQ_VIEW_TREE)
4750 view->lineno = tree_lineno;
4752 return REQ_NONE;
4753 }
4755 static bool
4756 tree_grep(struct view *view, struct line *line)
4757 {
4758 struct tree_entry *entry = line->data;
4759 const char *text[] = {
4760 entry->name,
4761 opt_author ? entry->author : "",
4762 mkdate(&entry->time, opt_date),
4763 NULL
4764 };
4766 return grep_text(view, text);
4767 }
4769 static void
4770 tree_select(struct view *view, struct line *line)
4771 {
4772 struct tree_entry *entry = line->data;
4774 if (line->type == LINE_TREE_FILE) {
4775 string_copy_rev(ref_blob, entry->id);
4776 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4778 } else if (line->type != LINE_TREE_DIR) {
4779 return;
4780 }
4782 string_copy_rev(view->ref, entry->id);
4783 }
4785 static bool
4786 tree_prepare(struct view *view)
4787 {
4788 if (view->lines == 0 && opt_prefix[0]) {
4789 char *pos = opt_prefix;
4791 while (pos && *pos) {
4792 char *end = strchr(pos, '/');
4794 if (end)
4795 *end = 0;
4796 push_tree_stack_entry(pos, 0);
4797 pos = end;
4798 if (end) {
4799 *end = '/';
4800 pos++;
4801 }
4802 }
4804 } else if (strcmp(view->vid, view->id)) {
4805 opt_path[0] = 0;
4806 }
4808 return io_format(&view->io, opt_cdup, IO_RD, view->ops->argv, FORMAT_ALL);
4809 }
4811 static const char *tree_argv[SIZEOF_ARG] = {
4812 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4813 };
4815 static struct view_ops tree_ops = {
4816 "file",
4817 tree_argv,
4818 NULL,
4819 tree_read,
4820 tree_draw,
4821 tree_request,
4822 tree_grep,
4823 tree_select,
4824 tree_prepare,
4825 };
4827 static bool
4828 blob_read(struct view *view, char *line)
4829 {
4830 if (!line)
4831 return TRUE;
4832 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4833 }
4835 static enum request
4836 blob_request(struct view *view, enum request request, struct line *line)
4837 {
4838 switch (request) {
4839 case REQ_EDIT:
4840 open_blob_editor();
4841 return REQ_NONE;
4842 default:
4843 return pager_request(view, request, line);
4844 }
4845 }
4847 static const char *blob_argv[SIZEOF_ARG] = {
4848 "git", "cat-file", "blob", "%(blob)", NULL
4849 };
4851 static struct view_ops blob_ops = {
4852 "line",
4853 blob_argv,
4854 NULL,
4855 blob_read,
4856 pager_draw,
4857 blob_request,
4858 pager_grep,
4859 pager_select,
4860 };
4862 /*
4863 * Blame backend
4864 *
4865 * Loading the blame view is a two phase job:
4866 *
4867 * 1. File content is read either using opt_file from the
4868 * filesystem or using git-cat-file.
4869 * 2. Then blame information is incrementally added by
4870 * reading output from git-blame.
4871 */
4873 static const char *blame_head_argv[] = {
4874 "git", "blame", "--incremental", "--", "%(file)", NULL
4875 };
4877 static const char *blame_ref_argv[] = {
4878 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4879 };
4881 static const char *blame_cat_file_argv[] = {
4882 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4883 };
4885 struct blame_commit {
4886 char id[SIZEOF_REV]; /* SHA1 ID. */
4887 char title[128]; /* First line of the commit message. */
4888 const char *author; /* Author of the commit. */
4889 struct time time; /* Date from the author ident. */
4890 char filename[128]; /* Name of file. */
4891 bool has_previous; /* Was a "previous" line detected. */
4892 };
4894 struct blame {
4895 struct blame_commit *commit;
4896 unsigned long lineno;
4897 char text[1];
4898 };
4900 static bool
4901 blame_open(struct view *view)
4902 {
4903 char path[SIZEOF_STR];
4905 if (!view->prev && *opt_prefix) {
4906 string_copy(path, opt_file);
4907 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4908 return FALSE;
4909 }
4911 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4912 if (!io_run_rd(&view->io, blame_cat_file_argv, opt_cdup, FORMAT_ALL))
4913 return FALSE;
4914 }
4916 setup_update(view, opt_file);
4917 string_format(view->ref, "%s ...", opt_file);
4919 return TRUE;
4920 }
4922 static struct blame_commit *
4923 get_blame_commit(struct view *view, const char *id)
4924 {
4925 size_t i;
4927 for (i = 0; i < view->lines; i++) {
4928 struct blame *blame = view->line[i].data;
4930 if (!blame->commit)
4931 continue;
4933 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4934 return blame->commit;
4935 }
4937 {
4938 struct blame_commit *commit = calloc(1, sizeof(*commit));
4940 if (commit)
4941 string_ncopy(commit->id, id, SIZEOF_REV);
4942 return commit;
4943 }
4944 }
4946 static bool
4947 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4948 {
4949 const char *pos = *posref;
4951 *posref = NULL;
4952 pos = strchr(pos + 1, ' ');
4953 if (!pos || !isdigit(pos[1]))
4954 return FALSE;
4955 *number = atoi(pos + 1);
4956 if (*number < min || *number > max)
4957 return FALSE;
4959 *posref = pos;
4960 return TRUE;
4961 }
4963 static struct blame_commit *
4964 parse_blame_commit(struct view *view, const char *text, int *blamed)
4965 {
4966 struct blame_commit *commit;
4967 struct blame *blame;
4968 const char *pos = text + SIZEOF_REV - 2;
4969 size_t orig_lineno = 0;
4970 size_t lineno;
4971 size_t group;
4973 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4974 return NULL;
4976 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4977 !parse_number(&pos, &lineno, 1, view->lines) ||
4978 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4979 return NULL;
4981 commit = get_blame_commit(view, text);
4982 if (!commit)
4983 return NULL;
4985 *blamed += group;
4986 while (group--) {
4987 struct line *line = &view->line[lineno + group - 1];
4989 blame = line->data;
4990 blame->commit = commit;
4991 blame->lineno = orig_lineno + group - 1;
4992 line->dirty = 1;
4993 }
4995 return commit;
4996 }
4998 static bool
4999 blame_read_file(struct view *view, const char *line, bool *read_file)
5000 {
5001 if (!line) {
5002 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
5003 struct io io = {};
5005 if (view->lines == 0 && !view->prev)
5006 die("No blame exist for %s", view->vid);
5008 if (view->lines == 0 || !io_run_rd(&io, argv, opt_cdup, FORMAT_ALL)) {
5009 report("Failed to load blame data");
5010 return TRUE;
5011 }
5013 io_done(view->pipe);
5014 view->io = io;
5015 *read_file = FALSE;
5016 return FALSE;
5018 } else {
5019 size_t linelen = strlen(line);
5020 struct blame *blame = malloc(sizeof(*blame) + linelen);
5022 if (!blame)
5023 return FALSE;
5025 blame->commit = NULL;
5026 strncpy(blame->text, line, linelen);
5027 blame->text[linelen] = 0;
5028 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
5029 }
5030 }
5032 static bool
5033 match_blame_header(const char *name, char **line)
5034 {
5035 size_t namelen = strlen(name);
5036 bool matched = !strncmp(name, *line, namelen);
5038 if (matched)
5039 *line += namelen;
5041 return matched;
5042 }
5044 static bool
5045 blame_read(struct view *view, char *line)
5046 {
5047 static struct blame_commit *commit = NULL;
5048 static int blamed = 0;
5049 static bool read_file = TRUE;
5051 if (read_file)
5052 return blame_read_file(view, line, &read_file);
5054 if (!line) {
5055 /* Reset all! */
5056 commit = NULL;
5057 blamed = 0;
5058 read_file = TRUE;
5059 string_format(view->ref, "%s", view->vid);
5060 if (view_is_displayed(view)) {
5061 update_view_title(view);
5062 redraw_view_from(view, 0);
5063 }
5064 return TRUE;
5065 }
5067 if (!commit) {
5068 commit = parse_blame_commit(view, line, &blamed);
5069 string_format(view->ref, "%s %2d%%", view->vid,
5070 view->lines ? blamed * 100 / view->lines : 0);
5072 } else if (match_blame_header("author ", &line)) {
5073 commit->author = get_author(line);
5075 } else if (match_blame_header("author-time ", &line)) {
5076 parse_timesec(&commit->time, line);
5078 } else if (match_blame_header("author-tz ", &line)) {
5079 parse_timezone(&commit->time, line);
5081 } else if (match_blame_header("summary ", &line)) {
5082 string_ncopy(commit->title, line, strlen(line));
5084 } else if (match_blame_header("previous ", &line)) {
5085 commit->has_previous = TRUE;
5087 } else if (match_blame_header("filename ", &line)) {
5088 string_ncopy(commit->filename, line, strlen(line));
5089 commit = NULL;
5090 }
5092 return TRUE;
5093 }
5095 static bool
5096 blame_draw(struct view *view, struct line *line, unsigned int lineno)
5097 {
5098 struct blame *blame = line->data;
5099 struct time *time = NULL;
5100 const char *id = NULL, *author = NULL;
5101 char text[SIZEOF_STR];
5103 if (blame->commit && *blame->commit->filename) {
5104 id = blame->commit->id;
5105 author = blame->commit->author;
5106 time = &blame->commit->time;
5107 }
5109 if (opt_date && draw_date(view, time))
5110 return TRUE;
5112 if (opt_author && draw_author(view, author))
5113 return TRUE;
5115 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
5116 return TRUE;
5118 if (draw_lineno(view, lineno))
5119 return TRUE;
5121 string_expand(text, sizeof(text), blame->text, opt_tab_size);
5122 draw_text(view, LINE_DEFAULT, text, TRUE);
5123 return TRUE;
5124 }
5126 static bool
5127 check_blame_commit(struct blame *blame, bool check_null_id)
5128 {
5129 if (!blame->commit)
5130 report("Commit data not loaded yet");
5131 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
5132 report("No commit exist for the selected line");
5133 else
5134 return TRUE;
5135 return FALSE;
5136 }
5138 static void
5139 setup_blame_parent_line(struct view *view, struct blame *blame)
5140 {
5141 const char *diff_tree_argv[] = {
5142 "git", "diff-tree", "-U0", blame->commit->id,
5143 "--", blame->commit->filename, NULL
5144 };
5145 struct io io = {};
5146 int parent_lineno = -1;
5147 int blamed_lineno = -1;
5148 char *line;
5150 if (!io_run(&io, diff_tree_argv, NULL, IO_RD))
5151 return;
5153 while ((line = io_get(&io, '\n', TRUE))) {
5154 if (*line == '@') {
5155 char *pos = strchr(line, '+');
5157 parent_lineno = atoi(line + 4);
5158 if (pos)
5159 blamed_lineno = atoi(pos + 1);
5161 } else if (*line == '+' && parent_lineno != -1) {
5162 if (blame->lineno == blamed_lineno - 1 &&
5163 !strcmp(blame->text, line + 1)) {
5164 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
5165 break;
5166 }
5167 blamed_lineno++;
5168 }
5169 }
5171 io_done(&io);
5172 }
5174 static enum request
5175 blame_request(struct view *view, enum request request, struct line *line)
5176 {
5177 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5178 struct blame *blame = line->data;
5180 switch (request) {
5181 case REQ_VIEW_BLAME:
5182 if (check_blame_commit(blame, TRUE)) {
5183 string_copy(opt_ref, blame->commit->id);
5184 string_copy(opt_file, blame->commit->filename);
5185 if (blame->lineno)
5186 view->lineno = blame->lineno;
5187 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
5188 }
5189 break;
5191 case REQ_PARENT:
5192 if (check_blame_commit(blame, TRUE) &&
5193 select_commit_parent(blame->commit->id, opt_ref,
5194 blame->commit->filename)) {
5195 string_copy(opt_file, blame->commit->filename);
5196 setup_blame_parent_line(view, blame);
5197 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
5198 }
5199 break;
5201 case REQ_ENTER:
5202 if (!check_blame_commit(blame, FALSE))
5203 break;
5205 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
5206 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
5207 break;
5209 if (!strcmp(blame->commit->id, NULL_ID)) {
5210 struct view *diff = VIEW(REQ_VIEW_DIFF);
5211 const char *diff_index_argv[] = {
5212 "git", "diff-index", "--root", "--patch-with-stat",
5213 "-C", "-M", "HEAD", "--", view->vid, NULL
5214 };
5216 if (!blame->commit->has_previous) {
5217 diff_index_argv[1] = "diff";
5218 diff_index_argv[2] = "--no-color";
5219 diff_index_argv[6] = "--";
5220 diff_index_argv[7] = "/dev/null";
5221 }
5223 if (!prepare_update(diff, diff_index_argv, NULL)) {
5224 report("Failed to allocate diff command");
5225 break;
5226 }
5227 flags |= OPEN_PREPARED;
5228 }
5230 open_view(view, REQ_VIEW_DIFF, flags);
5231 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
5232 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
5233 break;
5235 default:
5236 return request;
5237 }
5239 return REQ_NONE;
5240 }
5242 static bool
5243 blame_grep(struct view *view, struct line *line)
5244 {
5245 struct blame *blame = line->data;
5246 struct blame_commit *commit = blame->commit;
5247 const char *text[] = {
5248 blame->text,
5249 commit ? commit->title : "",
5250 commit ? commit->id : "",
5251 commit && opt_author ? commit->author : "",
5252 commit ? mkdate(&commit->time, opt_date) : "",
5253 NULL
5254 };
5256 return grep_text(view, text);
5257 }
5259 static void
5260 blame_select(struct view *view, struct line *line)
5261 {
5262 struct blame *blame = line->data;
5263 struct blame_commit *commit = blame->commit;
5265 if (!commit)
5266 return;
5268 if (!strcmp(commit->id, NULL_ID))
5269 string_ncopy(ref_commit, "HEAD", 4);
5270 else
5271 string_copy_rev(ref_commit, commit->id);
5272 }
5274 static struct view_ops blame_ops = {
5275 "line",
5276 NULL,
5277 blame_open,
5278 blame_read,
5279 blame_draw,
5280 blame_request,
5281 blame_grep,
5282 blame_select,
5283 };
5285 /*
5286 * Branch backend
5287 */
5289 struct branch {
5290 const char *author; /* Author of the last commit. */
5291 struct time time; /* Date of the last activity. */
5292 const struct ref *ref; /* Name and commit ID information. */
5293 };
5295 static const struct ref branch_all;
5297 static const enum sort_field branch_sort_fields[] = {
5298 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
5299 };
5300 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
5302 static int
5303 branch_compare(const void *l1, const void *l2)
5304 {
5305 const struct branch *branch1 = ((const struct line *) l1)->data;
5306 const struct branch *branch2 = ((const struct line *) l2)->data;
5308 switch (get_sort_field(branch_sort_state)) {
5309 case ORDERBY_DATE:
5310 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
5312 case ORDERBY_AUTHOR:
5313 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
5315 case ORDERBY_NAME:
5316 default:
5317 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
5318 }
5319 }
5321 static bool
5322 branch_draw(struct view *view, struct line *line, unsigned int lineno)
5323 {
5324 struct branch *branch = line->data;
5325 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
5327 if (opt_date && draw_date(view, &branch->time))
5328 return TRUE;
5330 if (opt_author && draw_author(view, branch->author))
5331 return TRUE;
5333 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name, TRUE);
5334 return TRUE;
5335 }
5337 static enum request
5338 branch_request(struct view *view, enum request request, struct line *line)
5339 {
5340 struct branch *branch = line->data;
5342 switch (request) {
5343 case REQ_REFRESH:
5344 load_refs();
5345 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
5346 return REQ_NONE;
5348 case REQ_TOGGLE_SORT_FIELD:
5349 case REQ_TOGGLE_SORT_ORDER:
5350 sort_view(view, request, &branch_sort_state, branch_compare);
5351 return REQ_NONE;
5353 case REQ_ENTER:
5354 if (branch->ref == &branch_all) {
5355 const char *all_branches_argv[] = {
5356 "git", "log", "--no-color", "--pretty=raw", "--parents",
5357 "--topo-order", "--all", NULL
5358 };
5359 struct view *main_view = VIEW(REQ_VIEW_MAIN);
5361 if (!prepare_update(main_view, all_branches_argv, NULL)) {
5362 report("Failed to load view of all branches");
5363 return REQ_NONE;
5364 }
5365 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
5366 } else {
5367 open_view(view, REQ_VIEW_MAIN, OPEN_SPLIT);
5368 }
5369 return REQ_NONE;
5371 default:
5372 return request;
5373 }
5374 }
5376 static bool
5377 branch_read(struct view *view, char *line)
5378 {
5379 static char id[SIZEOF_REV];
5380 struct branch *reference;
5381 size_t i;
5383 if (!line)
5384 return TRUE;
5386 switch (get_line_type(line)) {
5387 case LINE_COMMIT:
5388 string_copy_rev(id, line + STRING_SIZE("commit "));
5389 return TRUE;
5391 case LINE_AUTHOR:
5392 for (i = 0, reference = NULL; i < view->lines; i++) {
5393 struct branch *branch = view->line[i].data;
5395 if (strcmp(branch->ref->id, id))
5396 continue;
5398 view->line[i].dirty = TRUE;
5399 if (reference) {
5400 branch->author = reference->author;
5401 branch->time = reference->time;
5402 continue;
5403 }
5405 parse_author_line(line + STRING_SIZE("author "),
5406 &branch->author, &branch->time);
5407 reference = branch;
5408 }
5409 return TRUE;
5411 default:
5412 return TRUE;
5413 }
5415 }
5417 static bool
5418 branch_open_visitor(void *data, const struct ref *ref)
5419 {
5420 struct view *view = data;
5421 struct branch *branch;
5423 if (ref->tag || ref->ltag || ref->remote)
5424 return TRUE;
5426 branch = calloc(1, sizeof(*branch));
5427 if (!branch)
5428 return FALSE;
5430 branch->ref = ref;
5431 return !!add_line_data(view, branch, LINE_DEFAULT);
5432 }
5434 static bool
5435 branch_open(struct view *view)
5436 {
5437 const char *branch_log[] = {
5438 "git", "log", "--no-color", "--pretty=raw",
5439 "--simplify-by-decoration", "--all", NULL
5440 };
5442 if (!io_run_rd(&view->io, branch_log, NULL, FORMAT_NONE)) {
5443 report("Failed to load branch data");
5444 return TRUE;
5445 }
5447 setup_update(view, view->id);
5448 branch_open_visitor(view, &branch_all);
5449 foreach_ref(branch_open_visitor, view);
5450 view->p_restore = TRUE;
5452 return TRUE;
5453 }
5455 static bool
5456 branch_grep(struct view *view, struct line *line)
5457 {
5458 struct branch *branch = line->data;
5459 const char *text[] = {
5460 branch->ref->name,
5461 branch->author,
5462 NULL
5463 };
5465 return grep_text(view, text);
5466 }
5468 static void
5469 branch_select(struct view *view, struct line *line)
5470 {
5471 struct branch *branch = line->data;
5473 string_copy_rev(view->ref, branch->ref->id);
5474 string_copy_rev(ref_commit, branch->ref->id);
5475 string_copy_rev(ref_head, branch->ref->id);
5476 string_copy_rev(ref_branch, branch->ref->name);
5477 }
5479 static struct view_ops branch_ops = {
5480 "branch",
5481 NULL,
5482 branch_open,
5483 branch_read,
5484 branch_draw,
5485 branch_request,
5486 branch_grep,
5487 branch_select,
5488 };
5490 /*
5491 * Status backend
5492 */
5494 struct status {
5495 char status;
5496 struct {
5497 mode_t mode;
5498 char rev[SIZEOF_REV];
5499 char name[SIZEOF_STR];
5500 } old;
5501 struct {
5502 mode_t mode;
5503 char rev[SIZEOF_REV];
5504 char name[SIZEOF_STR];
5505 } new;
5506 };
5508 static char status_onbranch[SIZEOF_STR];
5509 static struct status stage_status;
5510 static enum line_type stage_line_type;
5511 static size_t stage_chunks;
5512 static int *stage_chunk;
5514 DEFINE_ALLOCATOR(realloc_ints, int, 32)
5516 /* This should work even for the "On branch" line. */
5517 static inline bool
5518 status_has_none(struct view *view, struct line *line)
5519 {
5520 return line < view->line + view->lines && !line[1].data;
5521 }
5523 /* Get fields from the diff line:
5524 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
5525 */
5526 static inline bool
5527 status_get_diff(struct status *file, const char *buf, size_t bufsize)
5528 {
5529 const char *old_mode = buf + 1;
5530 const char *new_mode = buf + 8;
5531 const char *old_rev = buf + 15;
5532 const char *new_rev = buf + 56;
5533 const char *status = buf + 97;
5535 if (bufsize < 98 ||
5536 old_mode[-1] != ':' ||
5537 new_mode[-1] != ' ' ||
5538 old_rev[-1] != ' ' ||
5539 new_rev[-1] != ' ' ||
5540 status[-1] != ' ')
5541 return FALSE;
5543 file->status = *status;
5545 string_copy_rev(file->old.rev, old_rev);
5546 string_copy_rev(file->new.rev, new_rev);
5548 file->old.mode = strtoul(old_mode, NULL, 8);
5549 file->new.mode = strtoul(new_mode, NULL, 8);
5551 file->old.name[0] = file->new.name[0] = 0;
5553 return TRUE;
5554 }
5556 static bool
5557 status_run(struct view *view, const char *argv[], char status, enum line_type type)
5558 {
5559 struct status *unmerged = NULL;
5560 char *buf;
5561 struct io io = {};
5563 if (!io_run(&io, argv, opt_cdup, IO_RD))
5564 return FALSE;
5566 add_line_data(view, NULL, type);
5568 while ((buf = io_get(&io, 0, TRUE))) {
5569 struct status *file = unmerged;
5571 if (!file) {
5572 file = calloc(1, sizeof(*file));
5573 if (!file || !add_line_data(view, file, type))
5574 goto error_out;
5575 }
5577 /* Parse diff info part. */
5578 if (status) {
5579 file->status = status;
5580 if (status == 'A')
5581 string_copy(file->old.rev, NULL_ID);
5583 } else if (!file->status || file == unmerged) {
5584 if (!status_get_diff(file, buf, strlen(buf)))
5585 goto error_out;
5587 buf = io_get(&io, 0, TRUE);
5588 if (!buf)
5589 break;
5591 /* Collapse all modified entries that follow an
5592 * associated unmerged entry. */
5593 if (unmerged == file) {
5594 unmerged->status = 'U';
5595 unmerged = NULL;
5596 } else if (file->status == 'U') {
5597 unmerged = file;
5598 }
5599 }
5601 /* Grab the old name for rename/copy. */
5602 if (!*file->old.name &&
5603 (file->status == 'R' || file->status == 'C')) {
5604 string_ncopy(file->old.name, buf, strlen(buf));
5606 buf = io_get(&io, 0, TRUE);
5607 if (!buf)
5608 break;
5609 }
5611 /* git-ls-files just delivers a NUL separated list of
5612 * file names similar to the second half of the
5613 * git-diff-* output. */
5614 string_ncopy(file->new.name, buf, strlen(buf));
5615 if (!*file->old.name)
5616 string_copy(file->old.name, file->new.name);
5617 file = NULL;
5618 }
5620 if (io_error(&io)) {
5621 error_out:
5622 io_done(&io);
5623 return FALSE;
5624 }
5626 if (!view->line[view->lines - 1].data)
5627 add_line_data(view, NULL, LINE_STAT_NONE);
5629 io_done(&io);
5630 return TRUE;
5631 }
5633 /* Don't show unmerged entries in the staged section. */
5634 static const char *status_diff_index_argv[] = {
5635 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
5636 "--cached", "-M", "HEAD", NULL
5637 };
5639 static const char *status_diff_files_argv[] = {
5640 "git", "diff-files", "-z", NULL
5641 };
5643 static const char *status_list_other_argv[] = {
5644 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL
5645 };
5647 static const char *status_list_no_head_argv[] = {
5648 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
5649 };
5651 static const char *update_index_argv[] = {
5652 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
5653 };
5655 /* Restore the previous line number to stay in the context or select a
5656 * line with something that can be updated. */
5657 static void
5658 status_restore(struct view *view)
5659 {
5660 if (view->p_lineno >= view->lines)
5661 view->p_lineno = view->lines - 1;
5662 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
5663 view->p_lineno++;
5664 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
5665 view->p_lineno--;
5667 /* If the above fails, always skip the "On branch" line. */
5668 if (view->p_lineno < view->lines)
5669 view->lineno = view->p_lineno;
5670 else
5671 view->lineno = 1;
5673 if (view->lineno < view->offset)
5674 view->offset = view->lineno;
5675 else if (view->offset + view->height <= view->lineno)
5676 view->offset = view->lineno - view->height + 1;
5678 view->p_restore = FALSE;
5679 }
5681 static void
5682 status_update_onbranch(void)
5683 {
5684 static const char *paths[][2] = {
5685 { "rebase-apply/rebasing", "Rebasing" },
5686 { "rebase-apply/applying", "Applying mailbox" },
5687 { "rebase-apply/", "Rebasing mailbox" },
5688 { "rebase-merge/interactive", "Interactive rebase" },
5689 { "rebase-merge/", "Rebase merge" },
5690 { "MERGE_HEAD", "Merging" },
5691 { "BISECT_LOG", "Bisecting" },
5692 { "HEAD", "On branch" },
5693 };
5694 char buf[SIZEOF_STR];
5695 struct stat stat;
5696 int i;
5698 if (is_initial_commit()) {
5699 string_copy(status_onbranch, "Initial commit");
5700 return;
5701 }
5703 for (i = 0; i < ARRAY_SIZE(paths); i++) {
5704 char *head = opt_head;
5706 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
5707 lstat(buf, &stat) < 0)
5708 continue;
5710 if (!*opt_head) {
5711 struct io io = {};
5713 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
5714 io_read_buf(&io, buf, sizeof(buf))) {
5715 head = buf;
5716 if (!prefixcmp(head, "refs/heads/"))
5717 head += STRING_SIZE("refs/heads/");
5718 }
5719 }
5721 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
5722 string_copy(status_onbranch, opt_head);
5723 return;
5724 }
5726 string_copy(status_onbranch, "Not currently on any branch");
5727 }
5729 /* First parse staged info using git-diff-index(1), then parse unstaged
5730 * info using git-diff-files(1), and finally untracked files using
5731 * git-ls-files(1). */
5732 static bool
5733 status_open(struct view *view)
5734 {
5735 reset_view(view);
5737 add_line_data(view, NULL, LINE_STAT_HEAD);
5738 status_update_onbranch();
5740 io_run_bg(update_index_argv);
5742 if (is_initial_commit()) {
5743 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5744 return FALSE;
5745 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5746 return FALSE;
5747 }
5749 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5750 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5751 return FALSE;
5753 /* Restore the exact position or use the specialized restore
5754 * mode? */
5755 if (!view->p_restore)
5756 status_restore(view);
5757 return TRUE;
5758 }
5760 static bool
5761 status_draw(struct view *view, struct line *line, unsigned int lineno)
5762 {
5763 struct status *status = line->data;
5764 enum line_type type;
5765 const char *text;
5767 if (!status) {
5768 switch (line->type) {
5769 case LINE_STAT_STAGED:
5770 type = LINE_STAT_SECTION;
5771 text = "Changes to be committed:";
5772 break;
5774 case LINE_STAT_UNSTAGED:
5775 type = LINE_STAT_SECTION;
5776 text = "Changed but not updated:";
5777 break;
5779 case LINE_STAT_UNTRACKED:
5780 type = LINE_STAT_SECTION;
5781 text = "Untracked files:";
5782 break;
5784 case LINE_STAT_NONE:
5785 type = LINE_DEFAULT;
5786 text = " (no files)";
5787 break;
5789 case LINE_STAT_HEAD:
5790 type = LINE_STAT_HEAD;
5791 text = status_onbranch;
5792 break;
5794 default:
5795 return FALSE;
5796 }
5797 } else {
5798 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5800 buf[0] = status->status;
5801 if (draw_text(view, line->type, buf, TRUE))
5802 return TRUE;
5803 type = LINE_DEFAULT;
5804 text = status->new.name;
5805 }
5807 draw_text(view, type, text, TRUE);
5808 return TRUE;
5809 }
5811 static enum request
5812 status_load_error(struct view *view, struct view *stage, const char *path)
5813 {
5814 if (displayed_views() == 2 || display[current_view] != view)
5815 maximize_view(view);
5816 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5817 return REQ_NONE;
5818 }
5820 static enum request
5821 status_enter(struct view *view, struct line *line)
5822 {
5823 struct status *status = line->data;
5824 const char *oldpath = status ? status->old.name : NULL;
5825 /* Diffs for unmerged entries are empty when passing the new
5826 * path, so leave it empty. */
5827 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5828 const char *info;
5829 enum open_flags split;
5830 struct view *stage = VIEW(REQ_VIEW_STAGE);
5832 if (line->type == LINE_STAT_NONE ||
5833 (!status && line[1].type == LINE_STAT_NONE)) {
5834 report("No file to diff");
5835 return REQ_NONE;
5836 }
5838 switch (line->type) {
5839 case LINE_STAT_STAGED:
5840 if (is_initial_commit()) {
5841 const char *no_head_diff_argv[] = {
5842 "git", "diff", "--no-color", "--patch-with-stat",
5843 "--", "/dev/null", newpath, NULL
5844 };
5846 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5847 return status_load_error(view, stage, newpath);
5848 } else {
5849 const char *index_show_argv[] = {
5850 "git", "diff-index", "--root", "--patch-with-stat",
5851 "-C", "-M", "--cached", "HEAD", "--",
5852 oldpath, newpath, NULL
5853 };
5855 if (!prepare_update(stage, index_show_argv, opt_cdup))
5856 return status_load_error(view, stage, newpath);
5857 }
5859 if (status)
5860 info = "Staged changes to %s";
5861 else
5862 info = "Staged changes";
5863 break;
5865 case LINE_STAT_UNSTAGED:
5866 {
5867 const char *files_show_argv[] = {
5868 "git", "diff-files", "--root", "--patch-with-stat",
5869 "-C", "-M", "--", oldpath, newpath, NULL
5870 };
5872 if (!prepare_update(stage, files_show_argv, opt_cdup))
5873 return status_load_error(view, stage, newpath);
5874 if (status)
5875 info = "Unstaged changes to %s";
5876 else
5877 info = "Unstaged changes";
5878 break;
5879 }
5880 case LINE_STAT_UNTRACKED:
5881 if (!newpath) {
5882 report("No file to show");
5883 return REQ_NONE;
5884 }
5886 if (!suffixcmp(status->new.name, -1, "/")) {
5887 report("Cannot display a directory");
5888 return REQ_NONE;
5889 }
5891 if (!prepare_update_file(stage, newpath))
5892 return status_load_error(view, stage, newpath);
5893 info = "Untracked file %s";
5894 break;
5896 case LINE_STAT_HEAD:
5897 return REQ_NONE;
5899 default:
5900 die("line type %d not handled in switch", line->type);
5901 }
5903 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5904 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5905 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5906 if (status) {
5907 stage_status = *status;
5908 } else {
5909 memset(&stage_status, 0, sizeof(stage_status));
5910 }
5912 stage_line_type = line->type;
5913 stage_chunks = 0;
5914 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5915 }
5917 return REQ_NONE;
5918 }
5920 static bool
5921 status_exists(struct status *status, enum line_type type)
5922 {
5923 struct view *view = VIEW(REQ_VIEW_STATUS);
5924 unsigned long lineno;
5926 for (lineno = 0; lineno < view->lines; lineno++) {
5927 struct line *line = &view->line[lineno];
5928 struct status *pos = line->data;
5930 if (line->type != type)
5931 continue;
5932 if (!pos && (!status || !status->status) && line[1].data) {
5933 select_view_line(view, lineno);
5934 return TRUE;
5935 }
5936 if (pos && !strcmp(status->new.name, pos->new.name)) {
5937 select_view_line(view, lineno);
5938 return TRUE;
5939 }
5940 }
5942 return FALSE;
5943 }
5946 static bool
5947 status_update_prepare(struct io *io, enum line_type type)
5948 {
5949 const char *staged_argv[] = {
5950 "git", "update-index", "-z", "--index-info", NULL
5951 };
5952 const char *others_argv[] = {
5953 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5954 };
5956 switch (type) {
5957 case LINE_STAT_STAGED:
5958 return io_run(io, staged_argv, opt_cdup, IO_WR);
5960 case LINE_STAT_UNSTAGED:
5961 case LINE_STAT_UNTRACKED:
5962 return io_run(io, others_argv, opt_cdup, IO_WR);
5964 default:
5965 die("line type %d not handled in switch", type);
5966 return FALSE;
5967 }
5968 }
5970 static bool
5971 status_update_write(struct io *io, struct status *status, enum line_type type)
5972 {
5973 char buf[SIZEOF_STR];
5974 size_t bufsize = 0;
5976 switch (type) {
5977 case LINE_STAT_STAGED:
5978 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5979 status->old.mode,
5980 status->old.rev,
5981 status->old.name, 0))
5982 return FALSE;
5983 break;
5985 case LINE_STAT_UNSTAGED:
5986 case LINE_STAT_UNTRACKED:
5987 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5988 return FALSE;
5989 break;
5991 default:
5992 die("line type %d not handled in switch", type);
5993 }
5995 return io_write(io, buf, bufsize);
5996 }
5998 static bool
5999 status_update_file(struct status *status, enum line_type type)
6000 {
6001 struct io io = {};
6002 bool result;
6004 if (!status_update_prepare(&io, type))
6005 return FALSE;
6007 result = status_update_write(&io, status, type);
6008 return io_done(&io) && result;
6009 }
6011 static bool
6012 status_update_files(struct view *view, struct line *line)
6013 {
6014 char buf[sizeof(view->ref)];
6015 struct io io = {};
6016 bool result = TRUE;
6017 struct line *pos = view->line + view->lines;
6018 int files = 0;
6019 int file, done;
6020 int cursor_y = -1, cursor_x = -1;
6022 if (!status_update_prepare(&io, line->type))
6023 return FALSE;
6025 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
6026 files++;
6028 string_copy(buf, view->ref);
6029 getsyx(cursor_y, cursor_x);
6030 for (file = 0, done = 5; result && file < files; line++, file++) {
6031 int almost_done = file * 100 / files;
6033 if (almost_done > done) {
6034 done = almost_done;
6035 string_format(view->ref, "updating file %u of %u (%d%% done)",
6036 file, files, done);
6037 update_view_title(view);
6038 setsyx(cursor_y, cursor_x);
6039 doupdate();
6040 }
6041 result = status_update_write(&io, line->data, line->type);
6042 }
6043 string_copy(view->ref, buf);
6045 return io_done(&io) && result;
6046 }
6048 static bool
6049 status_update(struct view *view)
6050 {
6051 struct line *line = &view->line[view->lineno];
6053 assert(view->lines);
6055 if (!line->data) {
6056 /* This should work even for the "On branch" line. */
6057 if (line < view->line + view->lines && !line[1].data) {
6058 report("Nothing to update");
6059 return FALSE;
6060 }
6062 if (!status_update_files(view, line + 1)) {
6063 report("Failed to update file status");
6064 return FALSE;
6065 }
6067 } else if (!status_update_file(line->data, line->type)) {
6068 report("Failed to update file status");
6069 return FALSE;
6070 }
6072 return TRUE;
6073 }
6075 static bool
6076 status_revert(struct status *status, enum line_type type, bool has_none)
6077 {
6078 if (!status || type != LINE_STAT_UNSTAGED) {
6079 if (type == LINE_STAT_STAGED) {
6080 report("Cannot revert changes to staged files");
6081 } else if (type == LINE_STAT_UNTRACKED) {
6082 report("Cannot revert changes to untracked files");
6083 } else if (has_none) {
6084 report("Nothing to revert");
6085 } else {
6086 report("Cannot revert changes to multiple files");
6087 }
6089 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
6090 char mode[10] = "100644";
6091 const char *reset_argv[] = {
6092 "git", "update-index", "--cacheinfo", mode,
6093 status->old.rev, status->old.name, NULL
6094 };
6095 const char *checkout_argv[] = {
6096 "git", "checkout", "--", status->old.name, NULL
6097 };
6099 if (status->status == 'U') {
6100 string_format(mode, "%5o", status->old.mode);
6102 if (status->old.mode == 0 && status->new.mode == 0) {
6103 reset_argv[2] = "--force-remove";
6104 reset_argv[3] = status->old.name;
6105 reset_argv[4] = NULL;
6106 }
6108 if (!io_run_fg(reset_argv, opt_cdup))
6109 return FALSE;
6110 if (status->old.mode == 0 && status->new.mode == 0)
6111 return TRUE;
6112 }
6114 return io_run_fg(checkout_argv, opt_cdup);
6115 }
6117 return FALSE;
6118 }
6120 static enum request
6121 status_request(struct view *view, enum request request, struct line *line)
6122 {
6123 struct status *status = line->data;
6125 switch (request) {
6126 case REQ_STATUS_UPDATE:
6127 if (!status_update(view))
6128 return REQ_NONE;
6129 break;
6131 case REQ_STATUS_REVERT:
6132 if (!status_revert(status, line->type, status_has_none(view, line)))
6133 return REQ_NONE;
6134 break;
6136 case REQ_STATUS_MERGE:
6137 if (!status || status->status != 'U') {
6138 report("Merging only possible for files with unmerged status ('U').");
6139 return REQ_NONE;
6140 }
6141 open_mergetool(status->new.name);
6142 break;
6144 case REQ_EDIT:
6145 if (!status)
6146 return request;
6147 if (status->status == 'D') {
6148 report("File has been deleted.");
6149 return REQ_NONE;
6150 }
6152 open_editor(status->new.name);
6153 break;
6155 case REQ_VIEW_BLAME:
6156 if (status)
6157 opt_ref[0] = 0;
6158 return request;
6160 case REQ_ENTER:
6161 /* After returning the status view has been split to
6162 * show the stage view. No further reloading is
6163 * necessary. */
6164 return status_enter(view, line);
6166 case REQ_REFRESH:
6167 /* Simply reload the view. */
6168 break;
6170 default:
6171 return request;
6172 }
6174 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
6176 return REQ_NONE;
6177 }
6179 static void
6180 status_select(struct view *view, struct line *line)
6181 {
6182 struct status *status = line->data;
6183 char file[SIZEOF_STR] = "all files";
6184 const char *text;
6185 const char *key;
6187 if (status && !string_format(file, "'%s'", status->new.name))
6188 return;
6190 if (!status && line[1].type == LINE_STAT_NONE)
6191 line++;
6193 switch (line->type) {
6194 case LINE_STAT_STAGED:
6195 text = "Press %s to unstage %s for commit";
6196 break;
6198 case LINE_STAT_UNSTAGED:
6199 text = "Press %s to stage %s for commit";
6200 break;
6202 case LINE_STAT_UNTRACKED:
6203 text = "Press %s to stage %s for addition";
6204 break;
6206 case LINE_STAT_HEAD:
6207 case LINE_STAT_NONE:
6208 text = "Nothing to update";
6209 break;
6211 default:
6212 die("line type %d not handled in switch", line->type);
6213 }
6215 if (status && status->status == 'U') {
6216 text = "Press %s to resolve conflict in %s";
6217 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
6219 } else {
6220 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
6221 }
6223 string_format(view->ref, text, key, file);
6224 if (status)
6225 string_copy(opt_file, status->new.name);
6226 }
6228 static bool
6229 status_grep(struct view *view, struct line *line)
6230 {
6231 struct status *status = line->data;
6233 if (status) {
6234 const char buf[2] = { status->status, 0 };
6235 const char *text[] = { status->new.name, buf, NULL };
6237 return grep_text(view, text);
6238 }
6240 return FALSE;
6241 }
6243 static struct view_ops status_ops = {
6244 "file",
6245 NULL,
6246 status_open,
6247 NULL,
6248 status_draw,
6249 status_request,
6250 status_grep,
6251 status_select,
6252 };
6255 static bool
6256 stage_diff_write(struct io *io, struct line *line, struct line *end)
6257 {
6258 while (line < end) {
6259 if (!io_write(io, line->data, strlen(line->data)) ||
6260 !io_write(io, "\n", 1))
6261 return FALSE;
6262 line++;
6263 if (line->type == LINE_DIFF_CHUNK ||
6264 line->type == LINE_DIFF_HEADER)
6265 break;
6266 }
6268 return TRUE;
6269 }
6271 static struct line *
6272 stage_diff_find(struct view *view, struct line *line, enum line_type type)
6273 {
6274 for (; view->line < line; line--)
6275 if (line->type == type)
6276 return line;
6278 return NULL;
6279 }
6281 static bool
6282 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
6283 {
6284 const char *apply_argv[SIZEOF_ARG] = {
6285 "git", "apply", "--whitespace=nowarn", NULL
6286 };
6287 struct line *diff_hdr;
6288 struct io io = {};
6289 int argc = 3;
6291 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
6292 if (!diff_hdr)
6293 return FALSE;
6295 if (!revert)
6296 apply_argv[argc++] = "--cached";
6297 if (revert || stage_line_type == LINE_STAT_STAGED)
6298 apply_argv[argc++] = "-R";
6299 apply_argv[argc++] = "-";
6300 apply_argv[argc++] = NULL;
6301 if (!io_run(&io, apply_argv, opt_cdup, IO_WR))
6302 return FALSE;
6304 if (!stage_diff_write(&io, diff_hdr, chunk) ||
6305 !stage_diff_write(&io, chunk, view->line + view->lines))
6306 chunk = NULL;
6308 io_done(&io);
6309 io_run_bg(update_index_argv);
6311 return chunk ? TRUE : FALSE;
6312 }
6314 static bool
6315 stage_update(struct view *view, struct line *line)
6316 {
6317 struct line *chunk = NULL;
6319 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
6320 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
6322 if (chunk) {
6323 if (!stage_apply_chunk(view, chunk, FALSE)) {
6324 report("Failed to apply chunk");
6325 return FALSE;
6326 }
6328 } else if (!stage_status.status) {
6329 view = VIEW(REQ_VIEW_STATUS);
6331 for (line = view->line; line < view->line + view->lines; line++)
6332 if (line->type == stage_line_type)
6333 break;
6335 if (!status_update_files(view, line + 1)) {
6336 report("Failed to update files");
6337 return FALSE;
6338 }
6340 } else if (!status_update_file(&stage_status, stage_line_type)) {
6341 report("Failed to update file");
6342 return FALSE;
6343 }
6345 return TRUE;
6346 }
6348 static bool
6349 stage_revert(struct view *view, struct line *line)
6350 {
6351 struct line *chunk = NULL;
6353 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
6354 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
6356 if (chunk) {
6357 if (!prompt_yesno("Are you sure you want to revert changes?"))
6358 return FALSE;
6360 if (!stage_apply_chunk(view, chunk, TRUE)) {
6361 report("Failed to revert chunk");
6362 return FALSE;
6363 }
6364 return TRUE;
6366 } else {
6367 return status_revert(stage_status.status ? &stage_status : NULL,
6368 stage_line_type, FALSE);
6369 }
6370 }
6373 static void
6374 stage_next(struct view *view, struct line *line)
6375 {
6376 int i;
6378 if (!stage_chunks) {
6379 for (line = view->line; line < view->line + view->lines; line++) {
6380 if (line->type != LINE_DIFF_CHUNK)
6381 continue;
6383 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
6384 report("Allocation failure");
6385 return;
6386 }
6388 stage_chunk[stage_chunks++] = line - view->line;
6389 }
6390 }
6392 for (i = 0; i < stage_chunks; i++) {
6393 if (stage_chunk[i] > view->lineno) {
6394 do_scroll_view(view, stage_chunk[i] - view->lineno);
6395 report("Chunk %d of %d", i + 1, stage_chunks);
6396 return;
6397 }
6398 }
6400 report("No next chunk found");
6401 }
6403 static enum request
6404 stage_request(struct view *view, enum request request, struct line *line)
6405 {
6406 switch (request) {
6407 case REQ_STATUS_UPDATE:
6408 if (!stage_update(view, line))
6409 return REQ_NONE;
6410 break;
6412 case REQ_STATUS_REVERT:
6413 if (!stage_revert(view, line))
6414 return REQ_NONE;
6415 break;
6417 case REQ_STAGE_NEXT:
6418 if (stage_line_type == LINE_STAT_UNTRACKED) {
6419 report("File is untracked; press %s to add",
6420 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
6421 return REQ_NONE;
6422 }
6423 stage_next(view, line);
6424 return REQ_NONE;
6426 case REQ_EDIT:
6427 if (!stage_status.new.name[0])
6428 return request;
6429 if (stage_status.status == 'D') {
6430 report("File has been deleted.");
6431 return REQ_NONE;
6432 }
6434 open_editor(stage_status.new.name);
6435 break;
6437 case REQ_REFRESH:
6438 /* Reload everything ... */
6439 break;
6441 case REQ_VIEW_BLAME:
6442 if (stage_status.new.name[0]) {
6443 string_copy(opt_file, stage_status.new.name);
6444 opt_ref[0] = 0;
6445 }
6446 return request;
6448 case REQ_ENTER:
6449 return pager_request(view, request, line);
6451 default:
6452 return request;
6453 }
6455 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
6456 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
6458 /* Check whether the staged entry still exists, and close the
6459 * stage view if it doesn't. */
6460 if (!status_exists(&stage_status, stage_line_type)) {
6461 status_restore(VIEW(REQ_VIEW_STATUS));
6462 return REQ_VIEW_CLOSE;
6463 }
6465 if (stage_line_type == LINE_STAT_UNTRACKED) {
6466 if (!suffixcmp(stage_status.new.name, -1, "/")) {
6467 report("Cannot display a directory");
6468 return REQ_NONE;
6469 }
6471 if (!prepare_update_file(view, stage_status.new.name)) {
6472 report("Failed to open file: %s", strerror(errno));
6473 return REQ_NONE;
6474 }
6475 }
6476 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
6478 return REQ_NONE;
6479 }
6481 static struct view_ops stage_ops = {
6482 "line",
6483 NULL,
6484 NULL,
6485 pager_read,
6486 pager_draw,
6487 stage_request,
6488 pager_grep,
6489 pager_select,
6490 };
6493 /*
6494 * Revision graph
6495 */
6497 struct commit {
6498 char id[SIZEOF_REV]; /* SHA1 ID. */
6499 char title[128]; /* First line of the commit message. */
6500 const char *author; /* Author of the commit. */
6501 struct time time; /* Date from the author ident. */
6502 struct ref_list *refs; /* Repository references. */
6503 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
6504 size_t graph_size; /* The width of the graph array. */
6505 bool has_parents; /* Rewritten --parents seen. */
6506 };
6508 /* Size of rev graph with no "padding" columns */
6509 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
6511 struct rev_graph {
6512 struct rev_graph *prev, *next, *parents;
6513 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
6514 size_t size;
6515 struct commit *commit;
6516 size_t pos;
6517 unsigned int boundary:1;
6518 };
6520 /* Parents of the commit being visualized. */
6521 static struct rev_graph graph_parents[4];
6523 /* The current stack of revisions on the graph. */
6524 static struct rev_graph graph_stacks[4] = {
6525 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
6526 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
6527 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
6528 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
6529 };
6531 static inline bool
6532 graph_parent_is_merge(struct rev_graph *graph)
6533 {
6534 return graph->parents->size > 1;
6535 }
6537 static inline void
6538 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
6539 {
6540 struct commit *commit = graph->commit;
6542 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
6543 commit->graph[commit->graph_size++] = symbol;
6544 }
6546 static void
6547 clear_rev_graph(struct rev_graph *graph)
6548 {
6549 graph->boundary = 0;
6550 graph->size = graph->pos = 0;
6551 graph->commit = NULL;
6552 memset(graph->parents, 0, sizeof(*graph->parents));
6553 }
6555 static void
6556 done_rev_graph(struct rev_graph *graph)
6557 {
6558 if (graph_parent_is_merge(graph) &&
6559 graph->pos < graph->size - 1 &&
6560 graph->next->size == graph->size + graph->parents->size - 1) {
6561 size_t i = graph->pos + graph->parents->size - 1;
6563 graph->commit->graph_size = i * 2;
6564 while (i < graph->next->size - 1) {
6565 append_to_rev_graph(graph, ' ');
6566 append_to_rev_graph(graph, '\\');
6567 i++;
6568 }
6569 }
6571 clear_rev_graph(graph);
6572 }
6574 static void
6575 push_rev_graph(struct rev_graph *graph, const char *parent)
6576 {
6577 int i;
6579 /* "Collapse" duplicate parents lines.
6580 *
6581 * FIXME: This needs to also update update the drawn graph but
6582 * for now it just serves as a method for pruning graph lines. */
6583 for (i = 0; i < graph->size; i++)
6584 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
6585 return;
6587 if (graph->size < SIZEOF_REVITEMS) {
6588 string_copy_rev(graph->rev[graph->size++], parent);
6589 }
6590 }
6592 static chtype
6593 get_rev_graph_symbol(struct rev_graph *graph)
6594 {
6595 chtype symbol;
6597 if (graph->boundary)
6598 symbol = REVGRAPH_BOUND;
6599 else if (graph->parents->size == 0)
6600 symbol = REVGRAPH_INIT;
6601 else if (graph_parent_is_merge(graph))
6602 symbol = REVGRAPH_MERGE;
6603 else if (graph->pos >= graph->size)
6604 symbol = REVGRAPH_BRANCH;
6605 else
6606 symbol = REVGRAPH_COMMIT;
6608 return symbol;
6609 }
6611 static void
6612 draw_rev_graph(struct rev_graph *graph)
6613 {
6614 struct rev_filler {
6615 chtype separator, line;
6616 };
6617 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
6618 static struct rev_filler fillers[] = {
6619 { ' ', '|' },
6620 { '`', '.' },
6621 { '\'', ' ' },
6622 { '/', ' ' },
6623 };
6624 chtype symbol = get_rev_graph_symbol(graph);
6625 struct rev_filler *filler;
6626 size_t i;
6628 fillers[DEFAULT].line = opt_line_graphics ? ACS_VLINE : '|';
6629 filler = &fillers[DEFAULT];
6631 for (i = 0; i < graph->pos; i++) {
6632 append_to_rev_graph(graph, filler->line);
6633 if (graph_parent_is_merge(graph->prev) &&
6634 graph->prev->pos == i)
6635 filler = &fillers[RSHARP];
6637 append_to_rev_graph(graph, filler->separator);
6638 }
6640 /* Place the symbol for this revision. */
6641 append_to_rev_graph(graph, symbol);
6643 if (graph->prev->size > graph->size)
6644 filler = &fillers[RDIAG];
6645 else
6646 filler = &fillers[DEFAULT];
6648 i++;
6650 for (; i < graph->size; i++) {
6651 append_to_rev_graph(graph, filler->separator);
6652 append_to_rev_graph(graph, filler->line);
6653 if (graph_parent_is_merge(graph->prev) &&
6654 i < graph->prev->pos + graph->parents->size)
6655 filler = &fillers[RSHARP];
6656 if (graph->prev->size > graph->size)
6657 filler = &fillers[LDIAG];
6658 }
6660 if (graph->prev->size > graph->size) {
6661 append_to_rev_graph(graph, filler->separator);
6662 if (filler->line != ' ')
6663 append_to_rev_graph(graph, filler->line);
6664 }
6665 }
6667 /* Prepare the next rev graph */
6668 static void
6669 prepare_rev_graph(struct rev_graph *graph)
6670 {
6671 size_t i;
6673 /* First, traverse all lines of revisions up to the active one. */
6674 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
6675 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
6676 break;
6678 push_rev_graph(graph->next, graph->rev[graph->pos]);
6679 }
6681 /* Interleave the new revision parent(s). */
6682 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
6683 push_rev_graph(graph->next, graph->parents->rev[i]);
6685 /* Lastly, put any remaining revisions. */
6686 for (i = graph->pos + 1; i < graph->size; i++)
6687 push_rev_graph(graph->next, graph->rev[i]);
6688 }
6690 static void
6691 update_rev_graph(struct view *view, struct rev_graph *graph)
6692 {
6693 /* If this is the finalizing update ... */
6694 if (graph->commit)
6695 prepare_rev_graph(graph);
6697 /* Graph visualization needs a one rev look-ahead,
6698 * so the first update doesn't visualize anything. */
6699 if (!graph->prev->commit)
6700 return;
6702 if (view->lines > 2)
6703 view->line[view->lines - 3].dirty = 1;
6704 if (view->lines > 1)
6705 view->line[view->lines - 2].dirty = 1;
6706 draw_rev_graph(graph->prev);
6707 done_rev_graph(graph->prev->prev);
6708 }
6711 /*
6712 * Main view backend
6713 */
6715 static const char *main_argv[SIZEOF_ARG] = {
6716 "git", "log", "--no-color", "--pretty=raw", "--parents",
6717 "--topo-order", "%(head)", NULL
6718 };
6720 static bool
6721 main_draw(struct view *view, struct line *line, unsigned int lineno)
6722 {
6723 struct commit *commit = line->data;
6725 if (!commit->author)
6726 return FALSE;
6728 if (opt_date && draw_date(view, &commit->time))
6729 return TRUE;
6731 if (opt_author && draw_author(view, commit->author))
6732 return TRUE;
6734 if (opt_rev_graph && commit->graph_size &&
6735 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
6736 return TRUE;
6738 if (opt_show_refs && commit->refs) {
6739 size_t i;
6741 for (i = 0; i < commit->refs->size; i++) {
6742 struct ref *ref = commit->refs->refs[i];
6743 enum line_type type;
6745 if (ref->head)
6746 type = LINE_MAIN_HEAD;
6747 else if (ref->ltag)
6748 type = LINE_MAIN_LOCAL_TAG;
6749 else if (ref->tag)
6750 type = LINE_MAIN_TAG;
6751 else if (ref->tracked)
6752 type = LINE_MAIN_TRACKED;
6753 else if (ref->remote)
6754 type = LINE_MAIN_REMOTE;
6755 else
6756 type = LINE_MAIN_REF;
6758 if (draw_text(view, type, "[", TRUE) ||
6759 draw_text(view, type, ref->name, TRUE) ||
6760 draw_text(view, type, "]", TRUE))
6761 return TRUE;
6763 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
6764 return TRUE;
6765 }
6766 }
6768 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
6769 return TRUE;
6770 }
6772 /* Reads git log --pretty=raw output and parses it into the commit struct. */
6773 static bool
6774 main_read(struct view *view, char *line)
6775 {
6776 static struct rev_graph *graph = graph_stacks;
6777 enum line_type type;
6778 struct commit *commit;
6780 if (!line) {
6781 int i;
6783 if (!view->lines && !view->prev)
6784 die("No revisions match the given arguments.");
6785 if (view->lines > 0) {
6786 commit = view->line[view->lines - 1].data;
6787 view->line[view->lines - 1].dirty = 1;
6788 if (!commit->author) {
6789 view->lines--;
6790 free(commit);
6791 graph->commit = NULL;
6792 }
6793 }
6794 update_rev_graph(view, graph);
6796 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
6797 clear_rev_graph(&graph_stacks[i]);
6798 return TRUE;
6799 }
6801 type = get_line_type(line);
6802 if (type == LINE_COMMIT) {
6803 commit = calloc(1, sizeof(struct commit));
6804 if (!commit)
6805 return FALSE;
6807 line += STRING_SIZE("commit ");
6808 if (*line == '-') {
6809 graph->boundary = 1;
6810 line++;
6811 }
6813 string_copy_rev(commit->id, line);
6814 commit->refs = get_ref_list(commit->id);
6815 graph->commit = commit;
6816 add_line_data(view, commit, LINE_MAIN_COMMIT);
6818 while ((line = strchr(line, ' '))) {
6819 line++;
6820 push_rev_graph(graph->parents, line);
6821 commit->has_parents = TRUE;
6822 }
6823 return TRUE;
6824 }
6826 if (!view->lines)
6827 return TRUE;
6828 commit = view->line[view->lines - 1].data;
6830 switch (type) {
6831 case LINE_PARENT:
6832 if (commit->has_parents)
6833 break;
6834 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
6835 break;
6837 case LINE_AUTHOR:
6838 parse_author_line(line + STRING_SIZE("author "),
6839 &commit->author, &commit->time);
6840 update_rev_graph(view, graph);
6841 graph = graph->next;
6842 break;
6844 default:
6845 /* Fill in the commit title if it has not already been set. */
6846 if (commit->title[0])
6847 break;
6849 /* Require titles to start with a non-space character at the
6850 * offset used by git log. */
6851 if (strncmp(line, " ", 4))
6852 break;
6853 line += 4;
6854 /* Well, if the title starts with a whitespace character,
6855 * try to be forgiving. Otherwise we end up with no title. */
6856 while (isspace(*line))
6857 line++;
6858 if (*line == '\0')
6859 break;
6860 /* FIXME: More graceful handling of titles; append "..." to
6861 * shortened titles, etc. */
6863 string_expand(commit->title, sizeof(commit->title), line, 1);
6864 view->line[view->lines - 1].dirty = 1;
6865 }
6867 return TRUE;
6868 }
6870 static enum request
6871 main_request(struct view *view, enum request request, struct line *line)
6872 {
6873 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
6875 switch (request) {
6876 case REQ_ENTER:
6877 open_view(view, REQ_VIEW_DIFF, flags);
6878 break;
6879 case REQ_REFRESH:
6880 load_refs();
6881 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6882 break;
6883 default:
6884 return request;
6885 }
6887 return REQ_NONE;
6888 }
6890 static bool
6891 grep_refs(struct ref_list *list, regex_t *regex)
6892 {
6893 regmatch_t pmatch;
6894 size_t i;
6896 if (!opt_show_refs || !list)
6897 return FALSE;
6899 for (i = 0; i < list->size; i++) {
6900 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6901 return TRUE;
6902 }
6904 return FALSE;
6905 }
6907 static bool
6908 main_grep(struct view *view, struct line *line)
6909 {
6910 struct commit *commit = line->data;
6911 const char *text[] = {
6912 commit->title,
6913 opt_author ? commit->author : "",
6914 mkdate(&commit->time, opt_date),
6915 NULL
6916 };
6918 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6919 }
6921 static void
6922 main_select(struct view *view, struct line *line)
6923 {
6924 struct commit *commit = line->data;
6926 string_copy_rev(view->ref, commit->id);
6927 string_copy_rev(ref_commit, view->ref);
6928 }
6930 static struct view_ops main_ops = {
6931 "commit",
6932 main_argv,
6933 NULL,
6934 main_read,
6935 main_draw,
6936 main_request,
6937 main_grep,
6938 main_select,
6939 };
6942 /*
6943 * Status management
6944 */
6946 /* Whether or not the curses interface has been initialized. */
6947 static bool cursed = FALSE;
6949 /* Terminal hacks and workarounds. */
6950 static bool use_scroll_redrawwin;
6951 static bool use_scroll_status_wclear;
6953 /* The status window is used for polling keystrokes. */
6954 static WINDOW *status_win;
6956 /* Reading from the prompt? */
6957 static bool input_mode = FALSE;
6959 static bool status_empty = FALSE;
6961 /* Update status and title window. */
6962 static void
6963 report(const char *msg, ...)
6964 {
6965 struct view *view = display[current_view];
6967 if (input_mode)
6968 return;
6970 if (!view) {
6971 char buf[SIZEOF_STR];
6972 va_list args;
6974 va_start(args, msg);
6975 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6976 buf[sizeof(buf) - 1] = 0;
6977 buf[sizeof(buf) - 2] = '.';
6978 buf[sizeof(buf) - 3] = '.';
6979 buf[sizeof(buf) - 4] = '.';
6980 }
6981 va_end(args);
6982 die("%s", buf);
6983 }
6985 if (!status_empty || *msg) {
6986 va_list args;
6988 va_start(args, msg);
6990 wmove(status_win, 0, 0);
6991 if (view->has_scrolled && use_scroll_status_wclear)
6992 wclear(status_win);
6993 if (*msg) {
6994 vwprintw(status_win, msg, args);
6995 status_empty = FALSE;
6996 } else {
6997 status_empty = TRUE;
6998 }
6999 wclrtoeol(status_win);
7000 wnoutrefresh(status_win);
7002 va_end(args);
7003 }
7005 update_view_title(view);
7006 }
7008 static void
7009 init_display(void)
7010 {
7011 const char *term;
7012 int x, y;
7014 /* Initialize the curses library */
7015 if (isatty(STDIN_FILENO)) {
7016 cursed = !!initscr();
7017 opt_tty = stdin;
7018 } else {
7019 /* Leave stdin and stdout alone when acting as a pager. */
7020 opt_tty = fopen("/dev/tty", "r+");
7021 if (!opt_tty)
7022 die("Failed to open /dev/tty");
7023 cursed = !!newterm(NULL, opt_tty, opt_tty);
7024 }
7026 if (!cursed)
7027 die("Failed to initialize curses");
7029 nonl(); /* Disable conversion and detect newlines from input. */
7030 cbreak(); /* Take input chars one at a time, no wait for \n */
7031 noecho(); /* Don't echo input */
7032 leaveok(stdscr, FALSE);
7034 if (has_colors())
7035 init_colors();
7037 getmaxyx(stdscr, y, x);
7038 status_win = newwin(1, 0, y - 1, 0);
7039 if (!status_win)
7040 die("Failed to create status window");
7042 /* Enable keyboard mapping */
7043 keypad(status_win, TRUE);
7044 wbkgdset(status_win, get_line_attr(LINE_STATUS));
7046 TABSIZE = opt_tab_size;
7048 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
7049 if (term && !strcmp(term, "gnome-terminal")) {
7050 /* In the gnome-terminal-emulator, the message from
7051 * scrolling up one line when impossible followed by
7052 * scrolling down one line causes corruption of the
7053 * status line. This is fixed by calling wclear. */
7054 use_scroll_status_wclear = TRUE;
7055 use_scroll_redrawwin = FALSE;
7057 } else if (term && !strcmp(term, "xrvt-xpm")) {
7058 /* No problems with full optimizations in xrvt-(unicode)
7059 * and aterm. */
7060 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
7062 } else {
7063 /* When scrolling in (u)xterm the last line in the
7064 * scrolling direction will update slowly. */
7065 use_scroll_redrawwin = TRUE;
7066 use_scroll_status_wclear = FALSE;
7067 }
7068 }
7070 static int
7071 get_input(int prompt_position)
7072 {
7073 struct view *view;
7074 int i, key, cursor_y, cursor_x;
7075 bool loading = FALSE;
7077 if (prompt_position)
7078 input_mode = TRUE;
7080 while (TRUE) {
7081 foreach_view (view, i) {
7082 update_view(view);
7083 if (view_is_displayed(view) && view->has_scrolled &&
7084 use_scroll_redrawwin)
7085 redrawwin(view->win);
7086 view->has_scrolled = FALSE;
7087 if (view->pipe)
7088 loading = TRUE;
7089 }
7091 /* Update the cursor position. */
7092 if (prompt_position) {
7093 getbegyx(status_win, cursor_y, cursor_x);
7094 cursor_x = prompt_position;
7095 } else {
7096 view = display[current_view];
7097 getbegyx(view->win, cursor_y, cursor_x);
7098 cursor_x = view->width - 1;
7099 cursor_y += view->lineno - view->offset;
7100 }
7101 setsyx(cursor_y, cursor_x);
7103 /* Refresh, accept single keystroke of input */
7104 doupdate();
7105 nodelay(status_win, loading);
7106 key = wgetch(status_win);
7108 /* wgetch() with nodelay() enabled returns ERR when
7109 * there's no input. */
7110 if (key == ERR) {
7112 } else if (key == KEY_RESIZE) {
7113 int height, width;
7115 getmaxyx(stdscr, height, width);
7117 wresize(status_win, 1, width);
7118 mvwin(status_win, height - 1, 0);
7119 wnoutrefresh(status_win);
7120 resize_display();
7121 redraw_display(TRUE);
7123 } else {
7124 input_mode = FALSE;
7125 return key;
7126 }
7127 }
7128 }
7130 static char *
7131 prompt_input(const char *prompt, input_handler handler, void *data)
7132 {
7133 enum input_status status = INPUT_OK;
7134 static char buf[SIZEOF_STR];
7135 size_t pos = 0;
7137 buf[pos] = 0;
7139 while (status == INPUT_OK || status == INPUT_SKIP) {
7140 int key;
7142 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
7143 wclrtoeol(status_win);
7145 key = get_input(pos + 1);
7146 switch (key) {
7147 case KEY_RETURN:
7148 case KEY_ENTER:
7149 case '\n':
7150 status = pos ? INPUT_STOP : INPUT_CANCEL;
7151 break;
7153 case KEY_BACKSPACE:
7154 if (pos > 0)
7155 buf[--pos] = 0;
7156 else
7157 status = INPUT_CANCEL;
7158 break;
7160 case KEY_ESC:
7161 status = INPUT_CANCEL;
7162 break;
7164 default:
7165 if (pos >= sizeof(buf)) {
7166 report("Input string too long");
7167 return NULL;
7168 }
7170 status = handler(data, buf, key);
7171 if (status == INPUT_OK)
7172 buf[pos++] = (char) key;
7173 }
7174 }
7176 /* Clear the status window */
7177 status_empty = FALSE;
7178 report("");
7180 if (status == INPUT_CANCEL)
7181 return NULL;
7183 buf[pos++] = 0;
7185 return buf;
7186 }
7188 static enum input_status
7189 prompt_yesno_handler(void *data, char *buf, int c)
7190 {
7191 if (c == 'y' || c == 'Y')
7192 return INPUT_STOP;
7193 if (c == 'n' || c == 'N')
7194 return INPUT_CANCEL;
7195 return INPUT_SKIP;
7196 }
7198 static bool
7199 prompt_yesno(const char *prompt)
7200 {
7201 char prompt2[SIZEOF_STR];
7203 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
7204 return FALSE;
7206 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
7207 }
7209 static enum input_status
7210 read_prompt_handler(void *data, char *buf, int c)
7211 {
7212 return isprint(c) ? INPUT_OK : INPUT_SKIP;
7213 }
7215 static char *
7216 read_prompt(const char *prompt)
7217 {
7218 return prompt_input(prompt, read_prompt_handler, NULL);
7219 }
7221 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
7222 {
7223 enum input_status status = INPUT_OK;
7224 int size = 0;
7226 while (items[size].text)
7227 size++;
7229 while (status == INPUT_OK) {
7230 const struct menu_item *item = &items[*selected];
7231 int key;
7232 int i;
7234 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
7235 prompt, *selected + 1, size);
7236 if (item->hotkey)
7237 wprintw(status_win, "[%c] ", (char) item->hotkey);
7238 wprintw(status_win, "%s", item->text);
7239 wclrtoeol(status_win);
7241 key = get_input(COLS - 1);
7242 switch (key) {
7243 case KEY_RETURN:
7244 case KEY_ENTER:
7245 case '\n':
7246 status = INPUT_STOP;
7247 break;
7249 case KEY_LEFT:
7250 case KEY_UP:
7251 *selected = *selected - 1;
7252 if (*selected < 0)
7253 *selected = size - 1;
7254 break;
7256 case KEY_RIGHT:
7257 case KEY_DOWN:
7258 *selected = (*selected + 1) % size;
7259 break;
7261 case KEY_ESC:
7262 status = INPUT_CANCEL;
7263 break;
7265 default:
7266 for (i = 0; items[i].text; i++)
7267 if (items[i].hotkey == key) {
7268 *selected = i;
7269 status = INPUT_STOP;
7270 break;
7271 }
7272 }
7273 }
7275 /* Clear the status window */
7276 status_empty = FALSE;
7277 report("");
7279 return status != INPUT_CANCEL;
7280 }
7282 /*
7283 * Repository properties
7284 */
7286 static struct ref **refs = NULL;
7287 static size_t refs_size = 0;
7288 static struct ref *refs_head = NULL;
7290 static struct ref_list **ref_lists = NULL;
7291 static size_t ref_lists_size = 0;
7293 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
7294 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
7295 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
7297 static int
7298 compare_refs(const void *ref1_, const void *ref2_)
7299 {
7300 const struct ref *ref1 = *(const struct ref **)ref1_;
7301 const struct ref *ref2 = *(const struct ref **)ref2_;
7303 if (ref1->tag != ref2->tag)
7304 return ref2->tag - ref1->tag;
7305 if (ref1->ltag != ref2->ltag)
7306 return ref2->ltag - ref2->ltag;
7307 if (ref1->head != ref2->head)
7308 return ref2->head - ref1->head;
7309 if (ref1->tracked != ref2->tracked)
7310 return ref2->tracked - ref1->tracked;
7311 if (ref1->remote != ref2->remote)
7312 return ref2->remote - ref1->remote;
7313 return strcmp(ref1->name, ref2->name);
7314 }
7316 static void
7317 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
7318 {
7319 size_t i;
7321 for (i = 0; i < refs_size; i++)
7322 if (!visitor(data, refs[i]))
7323 break;
7324 }
7326 static struct ref *
7327 get_ref_head()
7328 {
7329 return refs_head;
7330 }
7332 static struct ref_list *
7333 get_ref_list(const char *id)
7334 {
7335 struct ref_list *list;
7336 size_t i;
7338 for (i = 0; i < ref_lists_size; i++)
7339 if (!strcmp(id, ref_lists[i]->id))
7340 return ref_lists[i];
7342 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
7343 return NULL;
7344 list = calloc(1, sizeof(*list));
7345 if (!list)
7346 return NULL;
7348 for (i = 0; i < refs_size; i++) {
7349 if (!strcmp(id, refs[i]->id) &&
7350 realloc_refs_list(&list->refs, list->size, 1))
7351 list->refs[list->size++] = refs[i];
7352 }
7354 if (!list->refs) {
7355 free(list);
7356 return NULL;
7357 }
7359 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
7360 ref_lists[ref_lists_size++] = list;
7361 return list;
7362 }
7364 static int
7365 read_ref(char *id, size_t idlen, char *name, size_t namelen)
7366 {
7367 struct ref *ref = NULL;
7368 bool tag = FALSE;
7369 bool ltag = FALSE;
7370 bool remote = FALSE;
7371 bool tracked = FALSE;
7372 bool head = FALSE;
7373 int from = 0, to = refs_size - 1;
7375 if (!prefixcmp(name, "refs/tags/")) {
7376 if (!suffixcmp(name, namelen, "^{}")) {
7377 namelen -= 3;
7378 name[namelen] = 0;
7379 } else {
7380 ltag = TRUE;
7381 }
7383 tag = TRUE;
7384 namelen -= STRING_SIZE("refs/tags/");
7385 name += STRING_SIZE("refs/tags/");
7387 } else if (!prefixcmp(name, "refs/remotes/")) {
7388 remote = TRUE;
7389 namelen -= STRING_SIZE("refs/remotes/");
7390 name += STRING_SIZE("refs/remotes/");
7391 tracked = !strcmp(opt_remote, name);
7393 } else if (!prefixcmp(name, "refs/heads/")) {
7394 namelen -= STRING_SIZE("refs/heads/");
7395 name += STRING_SIZE("refs/heads/");
7396 if (!strncmp(opt_head, name, namelen))
7397 return OK;
7399 } else if (!strcmp(name, "HEAD")) {
7400 head = TRUE;
7401 if (*opt_head) {
7402 namelen = strlen(opt_head);
7403 name = opt_head;
7404 }
7405 }
7407 /* If we are reloading or it's an annotated tag, replace the
7408 * previous SHA1 with the resolved commit id; relies on the fact
7409 * git-ls-remote lists the commit id of an annotated tag right
7410 * before the commit id it points to. */
7411 while (from <= to) {
7412 size_t pos = (to + from) / 2;
7413 int cmp = strcmp(name, refs[pos]->name);
7415 if (!cmp) {
7416 ref = refs[pos];
7417 break;
7418 }
7420 if (cmp < 0)
7421 to = pos - 1;
7422 else
7423 from = pos + 1;
7424 }
7426 if (!ref) {
7427 if (!realloc_refs(&refs, refs_size, 1))
7428 return ERR;
7429 ref = calloc(1, sizeof(*ref) + namelen);
7430 if (!ref)
7431 return ERR;
7432 memmove(refs + from + 1, refs + from,
7433 (refs_size - from) * sizeof(*refs));
7434 refs[from] = ref;
7435 strncpy(ref->name, name, namelen);
7436 refs_size++;
7437 }
7439 ref->head = head;
7440 ref->tag = tag;
7441 ref->ltag = ltag;
7442 ref->remote = remote;
7443 ref->tracked = tracked;
7444 string_copy_rev(ref->id, id);
7446 if (head)
7447 refs_head = ref;
7448 return OK;
7449 }
7451 static int
7452 load_refs(void)
7453 {
7454 const char *head_argv[] = {
7455 "git", "symbolic-ref", "HEAD", NULL
7456 };
7457 static const char *ls_remote_argv[SIZEOF_ARG] = {
7458 "git", "ls-remote", opt_git_dir, NULL
7459 };
7460 static bool init = FALSE;
7461 size_t i;
7463 if (!init) {
7464 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
7465 die("TIG_LS_REMOTE contains too many arguments");
7466 init = TRUE;
7467 }
7469 if (!*opt_git_dir)
7470 return OK;
7472 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
7473 !prefixcmp(opt_head, "refs/heads/")) {
7474 char *offset = opt_head + STRING_SIZE("refs/heads/");
7476 memmove(opt_head, offset, strlen(offset) + 1);
7477 }
7479 refs_head = NULL;
7480 for (i = 0; i < refs_size; i++)
7481 refs[i]->id[0] = 0;
7483 if (io_run_load(ls_remote_argv, "\t", read_ref) == ERR)
7484 return ERR;
7486 /* Update the ref lists to reflect changes. */
7487 for (i = 0; i < ref_lists_size; i++) {
7488 struct ref_list *list = ref_lists[i];
7489 size_t old, new;
7491 for (old = new = 0; old < list->size; old++)
7492 if (!strcmp(list->id, list->refs[old]->id))
7493 list->refs[new++] = list->refs[old];
7494 list->size = new;
7495 }
7497 return OK;
7498 }
7500 static void
7501 set_remote_branch(const char *name, const char *value, size_t valuelen)
7502 {
7503 if (!strcmp(name, ".remote")) {
7504 string_ncopy(opt_remote, value, valuelen);
7506 } else if (*opt_remote && !strcmp(name, ".merge")) {
7507 size_t from = strlen(opt_remote);
7509 if (!prefixcmp(value, "refs/heads/"))
7510 value += STRING_SIZE("refs/heads/");
7512 if (!string_format_from(opt_remote, &from, "/%s", value))
7513 opt_remote[0] = 0;
7514 }
7515 }
7517 static void
7518 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
7519 {
7520 const char *argv[SIZEOF_ARG] = { name, "=" };
7521 int argc = 1 + (cmd == option_set_command);
7522 int error = ERR;
7524 if (!argv_from_string(argv, &argc, value))
7525 config_msg = "Too many option arguments";
7526 else
7527 error = cmd(argc, argv);
7529 if (error == ERR)
7530 warn("Option 'tig.%s': %s", name, config_msg);
7531 }
7533 static bool
7534 set_environment_variable(const char *name, const char *value)
7535 {
7536 size_t len = strlen(name) + 1 + strlen(value) + 1;
7537 char *env = malloc(len);
7539 if (env &&
7540 string_nformat(env, len, NULL, "%s=%s", name, value) &&
7541 putenv(env) == 0)
7542 return TRUE;
7543 free(env);
7544 return FALSE;
7545 }
7547 static void
7548 set_work_tree(const char *value)
7549 {
7550 char cwd[SIZEOF_STR];
7552 if (!getcwd(cwd, sizeof(cwd)))
7553 die("Failed to get cwd path: %s", strerror(errno));
7554 if (chdir(opt_git_dir) < 0)
7555 die("Failed to chdir(%s): %s", strerror(errno));
7556 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
7557 die("Failed to get git path: %s", strerror(errno));
7558 if (chdir(cwd) < 0)
7559 die("Failed to chdir(%s): %s", cwd, strerror(errno));
7560 if (chdir(value) < 0)
7561 die("Failed to chdir(%s): %s", value, strerror(errno));
7562 if (!getcwd(cwd, sizeof(cwd)))
7563 die("Failed to get cwd path: %s", strerror(errno));
7564 if (!set_environment_variable("GIT_WORK_TREE", cwd))
7565 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
7566 if (!set_environment_variable("GIT_DIR", opt_git_dir))
7567 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
7568 opt_is_inside_work_tree = TRUE;
7569 }
7571 static int
7572 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
7573 {
7574 if (!strcmp(name, "i18n.commitencoding"))
7575 string_ncopy(opt_encoding, value, valuelen);
7577 else if (!strcmp(name, "core.editor"))
7578 string_ncopy(opt_editor, value, valuelen);
7580 else if (!strcmp(name, "core.worktree"))
7581 set_work_tree(value);
7583 else if (!prefixcmp(name, "tig.color."))
7584 set_repo_config_option(name + 10, value, option_color_command);
7586 else if (!prefixcmp(name, "tig.bind."))
7587 set_repo_config_option(name + 9, value, option_bind_command);
7589 else if (!prefixcmp(name, "tig."))
7590 set_repo_config_option(name + 4, value, option_set_command);
7592 else if (*opt_head && !prefixcmp(name, "branch.") &&
7593 !strncmp(name + 7, opt_head, strlen(opt_head)))
7594 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
7596 return OK;
7597 }
7599 static int
7600 load_git_config(void)
7601 {
7602 const char *config_list_argv[] = { "git", "config", "--list", NULL };
7604 return io_run_load(config_list_argv, "=", read_repo_config_option);
7605 }
7607 static int
7608 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
7609 {
7610 if (!opt_git_dir[0]) {
7611 string_ncopy(opt_git_dir, name, namelen);
7613 } else if (opt_is_inside_work_tree == -1) {
7614 /* This can be 3 different values depending on the
7615 * version of git being used. If git-rev-parse does not
7616 * understand --is-inside-work-tree it will simply echo
7617 * the option else either "true" or "false" is printed.
7618 * Default to true for the unknown case. */
7619 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
7621 } else if (*name == '.') {
7622 string_ncopy(opt_cdup, name, namelen);
7624 } else {
7625 string_ncopy(opt_prefix, name, namelen);
7626 }
7628 return OK;
7629 }
7631 static int
7632 load_repo_info(void)
7633 {
7634 const char *rev_parse_argv[] = {
7635 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
7636 "--show-cdup", "--show-prefix", NULL
7637 };
7639 return io_run_load(rev_parse_argv, "=", read_repo_info);
7640 }
7643 /*
7644 * Main
7645 */
7647 static const char usage[] =
7648 "tig " TIG_VERSION " (" __DATE__ ")\n"
7649 "\n"
7650 "Usage: tig [options] [revs] [--] [paths]\n"
7651 " or: tig show [options] [revs] [--] [paths]\n"
7652 " or: tig blame [rev] path\n"
7653 " or: tig status\n"
7654 " or: tig < [git command output]\n"
7655 "\n"
7656 "Options:\n"
7657 " -v, --version Show version and exit\n"
7658 " -h, --help Show help message and exit";
7660 static void __NORETURN
7661 quit(int sig)
7662 {
7663 /* XXX: Restore tty modes and let the OS cleanup the rest! */
7664 if (cursed)
7665 endwin();
7666 exit(0);
7667 }
7669 static void __NORETURN
7670 die(const char *err, ...)
7671 {
7672 va_list args;
7674 endwin();
7676 va_start(args, err);
7677 fputs("tig: ", stderr);
7678 vfprintf(stderr, err, args);
7679 fputs("\n", stderr);
7680 va_end(args);
7682 exit(1);
7683 }
7685 static void
7686 warn(const char *msg, ...)
7687 {
7688 va_list args;
7690 va_start(args, msg);
7691 fputs("tig warning: ", stderr);
7692 vfprintf(stderr, msg, args);
7693 fputs("\n", stderr);
7694 va_end(args);
7695 }
7697 static enum request
7698 parse_options(int argc, const char *argv[])
7699 {
7700 enum request request = REQ_VIEW_MAIN;
7701 const char *subcommand;
7702 bool seen_dashdash = FALSE;
7703 /* XXX: This is vulnerable to the user overriding options
7704 * required for the main view parser. */
7705 const char *custom_argv[SIZEOF_ARG] = {
7706 "git", "log", "--no-color", "--pretty=raw", "--parents",
7707 "--topo-order", NULL
7708 };
7709 int i, j = 6;
7711 if (!isatty(STDIN_FILENO)) {
7712 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
7713 return REQ_VIEW_PAGER;
7714 }
7716 if (argc <= 1)
7717 return REQ_NONE;
7719 subcommand = argv[1];
7720 if (!strcmp(subcommand, "status")) {
7721 if (argc > 2)
7722 warn("ignoring arguments after `%s'", subcommand);
7723 return REQ_VIEW_STATUS;
7725 } else if (!strcmp(subcommand, "blame")) {
7726 if (argc <= 2 || argc > 4)
7727 die("invalid number of options to blame\n\n%s", usage);
7729 i = 2;
7730 if (argc == 4) {
7731 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
7732 i++;
7733 }
7735 string_ncopy(opt_file, argv[i], strlen(argv[i]));
7736 return REQ_VIEW_BLAME;
7738 } else if (!strcmp(subcommand, "show")) {
7739 request = REQ_VIEW_DIFF;
7741 } else {
7742 subcommand = NULL;
7743 }
7745 if (subcommand) {
7746 custom_argv[1] = subcommand;
7747 j = 2;
7748 }
7750 for (i = 1 + !!subcommand; i < argc; i++) {
7751 const char *opt = argv[i];
7753 if (seen_dashdash || !strcmp(opt, "--")) {
7754 seen_dashdash = TRUE;
7756 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
7757 printf("tig version %s\n", TIG_VERSION);
7758 quit(0);
7760 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
7761 printf("%s\n", usage);
7762 quit(0);
7763 }
7765 custom_argv[j++] = opt;
7766 if (j >= ARRAY_SIZE(custom_argv))
7767 die("command too long");
7768 }
7770 if (!prepare_update(VIEW(request), custom_argv, NULL))
7771 die("Failed to format arguments");
7773 return request;
7774 }
7776 int
7777 main(int argc, const char *argv[])
7778 {
7779 const char *codeset = "UTF-8";
7780 enum request request = parse_options(argc, argv);
7781 struct view *view;
7782 size_t i;
7784 signal(SIGINT, quit);
7785 signal(SIGPIPE, SIG_IGN);
7787 if (setlocale(LC_ALL, "")) {
7788 codeset = nl_langinfo(CODESET);
7789 }
7791 if (load_repo_info() == ERR)
7792 die("Failed to load repo info.");
7794 if (load_options() == ERR)
7795 die("Failed to load user config.");
7797 if (load_git_config() == ERR)
7798 die("Failed to load repo config.");
7800 /* Require a git repository unless when running in pager mode. */
7801 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7802 die("Not a git repository");
7804 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
7805 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
7806 if (opt_iconv_in == ICONV_NONE)
7807 die("Failed to initialize character set conversion");
7808 }
7810 if (codeset && strcmp(codeset, "UTF-8")) {
7811 opt_iconv_out = iconv_open(codeset, "UTF-8");
7812 if (opt_iconv_out == ICONV_NONE)
7813 die("Failed to initialize character set conversion");
7814 }
7816 if (load_refs() == ERR)
7817 die("Failed to load refs.");
7819 foreach_view (view, i)
7820 if (!argv_from_env(view->ops->argv, view->cmd_env))
7821 die("Too many arguments in the `%s` environment variable",
7822 view->cmd_env);
7824 init_display();
7826 if (request != REQ_NONE)
7827 open_view(NULL, request, OPEN_PREPARED);
7828 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7830 while (view_driver(display[current_view], request)) {
7831 int key = get_input(0);
7833 view = display[current_view];
7834 request = get_keybinding(view->keymap, key);
7836 /* Some low-level request handling. This keeps access to
7837 * status_win restricted. */
7838 switch (request) {
7839 case REQ_NONE:
7840 report("Unknown key, press %s for help",
7841 get_key(view->keymap, REQ_VIEW_HELP));
7842 break;
7843 case REQ_PROMPT:
7844 {
7845 char *cmd = read_prompt(":");
7847 if (cmd && isdigit(*cmd)) {
7848 int lineno = view->lineno + 1;
7850 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7851 select_view_line(view, lineno - 1);
7852 report("");
7853 } else {
7854 report("Unable to parse '%s' as a line number", cmd);
7855 }
7857 } else if (cmd) {
7858 struct view *next = VIEW(REQ_VIEW_PAGER);
7859 const char *argv[SIZEOF_ARG] = { "git" };
7860 int argc = 1;
7862 /* When running random commands, initially show the
7863 * command in the title. However, it maybe later be
7864 * overwritten if a commit line is selected. */
7865 string_ncopy(next->ref, cmd, strlen(cmd));
7867 if (!argv_from_string(argv, &argc, cmd)) {
7868 report("Too many arguments");
7869 } else if (!prepare_update(next, argv, NULL)) {
7870 report("Failed to format command");
7871 } else {
7872 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7873 }
7874 }
7876 request = REQ_NONE;
7877 break;
7878 }
7879 case REQ_SEARCH:
7880 case REQ_SEARCH_BACK:
7881 {
7882 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7883 char *search = read_prompt(prompt);
7885 if (search)
7886 string_ncopy(opt_search, search, strlen(search));
7887 else if (*opt_search)
7888 request = request == REQ_SEARCH ?
7889 REQ_FIND_NEXT :
7890 REQ_FIND_PREV;
7891 else
7892 request = REQ_NONE;
7893 break;
7894 }
7895 default:
7896 break;
7897 }
7898 }
7900 quit(0);
7902 return 0;
7903 }