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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 report("");
3380 end_update(view, FALSE);
3381 }
3383 if (restore_view_position(view))
3384 redraw = TRUE;
3386 if (!view_is_displayed(view))
3387 return TRUE;
3389 if (redraw)
3390 redraw_view_from(view, 0);
3391 else
3392 redraw_view_dirty(view);
3394 /* Update the title _after_ the redraw so that if the redraw picks up a
3395 * commit reference in view->ref it'll be available here. */
3396 update_view_title(view);
3397 return TRUE;
3398 }
3400 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
3402 static struct line *
3403 add_line_data(struct view *view, void *data, enum line_type type)
3404 {
3405 struct line *line;
3407 if (!realloc_lines(&view->line, view->lines, 1))
3408 return NULL;
3410 line = &view->line[view->lines++];
3411 memset(line, 0, sizeof(*line));
3412 line->type = type;
3413 line->data = data;
3414 line->dirty = 1;
3416 return line;
3417 }
3419 static struct line *
3420 add_line_text(struct view *view, const char *text, enum line_type type)
3421 {
3422 char *data = text ? strdup(text) : NULL;
3424 return data ? add_line_data(view, data, type) : NULL;
3425 }
3427 static struct line *
3428 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
3429 {
3430 char buf[SIZEOF_STR];
3431 va_list args;
3433 va_start(args, fmt);
3434 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
3435 buf[0] = 0;
3436 va_end(args);
3438 return buf[0] ? add_line_text(view, buf, type) : NULL;
3439 }
3441 /*
3442 * View opening
3443 */
3445 enum open_flags {
3446 OPEN_DEFAULT = 0, /* Use default view switching. */
3447 OPEN_SPLIT = 1, /* Split current view. */
3448 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
3449 OPEN_REFRESH = 16, /* Refresh view using previous command. */
3450 OPEN_PREPARED = 32, /* Open already prepared command. */
3451 };
3453 static void
3454 open_view(struct view *prev, enum request request, enum open_flags flags)
3455 {
3456 bool split = !!(flags & OPEN_SPLIT);
3457 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
3458 bool nomaximize = !!(flags & OPEN_REFRESH);
3459 struct view *view = VIEW(request);
3460 int nviews = displayed_views();
3461 struct view *base_view = display[0];
3463 if (view == prev && nviews == 1 && !reload) {
3464 report("Already in %s view", view->name);
3465 return;
3466 }
3468 if (view->git_dir && !opt_git_dir[0]) {
3469 report("The %s view is disabled in pager view", view->name);
3470 return;
3471 }
3473 if (split) {
3474 display[1] = view;
3475 current_view = 1;
3476 view->parent = prev;
3477 } else if (!nomaximize) {
3478 /* Maximize the current view. */
3479 memset(display, 0, sizeof(display));
3480 current_view = 0;
3481 display[current_view] = view;
3482 }
3484 /* No prev signals that this is the first loaded view. */
3485 if (prev && view != prev) {
3486 view->prev = prev;
3487 }
3489 /* Resize the view when switching between split- and full-screen,
3490 * or when switching between two different full-screen views. */
3491 if (nviews != displayed_views() ||
3492 (nviews == 1 && base_view != display[0]))
3493 resize_display();
3495 if (view->ops->open) {
3496 if (view->pipe)
3497 end_update(view, TRUE);
3498 if (!view->ops->open(view)) {
3499 report("Failed to load %s view", view->name);
3500 return;
3501 }
3502 restore_view_position(view);
3504 } else if ((reload || strcmp(view->vid, view->id)) &&
3505 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3506 report("Failed to load %s view", view->name);
3507 return;
3508 }
3510 if (split && prev->lineno - prev->offset >= prev->height) {
3511 /* Take the title line into account. */
3512 int lines = prev->lineno - prev->offset - prev->height + 1;
3514 /* Scroll the view that was split if the current line is
3515 * outside the new limited view. */
3516 do_scroll_view(prev, lines);
3517 }
3519 if (prev && view != prev && split && view_is_displayed(prev)) {
3520 /* "Blur" the previous view. */
3521 update_view_title(prev);
3522 }
3524 if (view->pipe && view->lines == 0) {
3525 /* Clear the old view and let the incremental updating refill
3526 * the screen. */
3527 werase(view->win);
3528 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3529 report("");
3530 } else if (view_is_displayed(view)) {
3531 redraw_view(view);
3532 report("");
3533 }
3534 }
3536 static void
3537 open_external_viewer(const char *argv[], const char *dir)
3538 {
3539 def_prog_mode(); /* save current tty modes */
3540 endwin(); /* restore original tty modes */
3541 io_run_fg(argv, dir);
3542 fprintf(stderr, "Press Enter to continue");
3543 getc(opt_tty);
3544 reset_prog_mode();
3545 redraw_display(TRUE);
3546 }
3548 static void
3549 open_mergetool(const char *file)
3550 {
3551 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3553 open_external_viewer(mergetool_argv, opt_cdup);
3554 }
3556 static void
3557 open_editor(const char *file)
3558 {
3559 const char *editor_argv[] = { "vi", file, NULL };
3560 const char *editor;
3562 editor = getenv("GIT_EDITOR");
3563 if (!editor && *opt_editor)
3564 editor = opt_editor;
3565 if (!editor)
3566 editor = getenv("VISUAL");
3567 if (!editor)
3568 editor = getenv("EDITOR");
3569 if (!editor)
3570 editor = "vi";
3572 editor_argv[0] = editor;
3573 open_external_viewer(editor_argv, opt_cdup);
3574 }
3576 static void
3577 open_run_request(enum request request)
3578 {
3579 struct run_request *req = get_run_request(request);
3580 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3582 if (!req) {
3583 report("Unknown run request");
3584 return;
3585 }
3587 if (format_argv(argv, req->argv, FORMAT_ALL))
3588 open_external_viewer(argv, NULL);
3589 free_argv(argv);
3590 }
3592 /*
3593 * User request switch noodle
3594 */
3596 static int
3597 view_driver(struct view *view, enum request request)
3598 {
3599 int i;
3601 if (request == REQ_NONE)
3602 return TRUE;
3604 if (request > REQ_NONE) {
3605 open_run_request(request);
3606 /* FIXME: When all views can refresh always do this. */
3607 if (view->refresh)
3608 request = REQ_REFRESH;
3609 else
3610 return TRUE;
3611 }
3613 if (view && view->lines) {
3614 request = view->ops->request(view, request, &view->line[view->lineno]);
3615 if (request == REQ_NONE)
3616 return TRUE;
3617 }
3619 switch (request) {
3620 case REQ_MOVE_UP:
3621 case REQ_MOVE_DOWN:
3622 case REQ_MOVE_PAGE_UP:
3623 case REQ_MOVE_PAGE_DOWN:
3624 case REQ_MOVE_FIRST_LINE:
3625 case REQ_MOVE_LAST_LINE:
3626 move_view(view, request);
3627 break;
3629 case REQ_SCROLL_LEFT:
3630 case REQ_SCROLL_RIGHT:
3631 case REQ_SCROLL_LINE_DOWN:
3632 case REQ_SCROLL_LINE_UP:
3633 case REQ_SCROLL_PAGE_DOWN:
3634 case REQ_SCROLL_PAGE_UP:
3635 scroll_view(view, request);
3636 break;
3638 case REQ_VIEW_BLAME:
3639 if (!opt_file[0]) {
3640 report("No file chosen, press %s to open tree view",
3641 get_key(view->keymap, REQ_VIEW_TREE));
3642 break;
3643 }
3644 open_view(view, request, OPEN_DEFAULT);
3645 break;
3647 case REQ_VIEW_BLOB:
3648 if (!ref_blob[0]) {
3649 report("No file chosen, press %s to open tree view",
3650 get_key(view->keymap, REQ_VIEW_TREE));
3651 break;
3652 }
3653 open_view(view, request, OPEN_DEFAULT);
3654 break;
3656 case REQ_VIEW_PAGER:
3657 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3658 report("No pager content, press %s to run command from prompt",
3659 get_key(view->keymap, REQ_PROMPT));
3660 break;
3661 }
3662 open_view(view, request, OPEN_DEFAULT);
3663 break;
3665 case REQ_VIEW_STAGE:
3666 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3667 report("No stage content, press %s to open the status view and choose file",
3668 get_key(view->keymap, REQ_VIEW_STATUS));
3669 break;
3670 }
3671 open_view(view, request, OPEN_DEFAULT);
3672 break;
3674 case REQ_VIEW_STATUS:
3675 if (opt_is_inside_work_tree == FALSE) {
3676 report("The status view requires a working tree");
3677 break;
3678 }
3679 open_view(view, request, OPEN_DEFAULT);
3680 break;
3682 case REQ_VIEW_MAIN:
3683 case REQ_VIEW_DIFF:
3684 case REQ_VIEW_LOG:
3685 case REQ_VIEW_TREE:
3686 case REQ_VIEW_HELP:
3687 case REQ_VIEW_BRANCH:
3688 open_view(view, request, OPEN_DEFAULT);
3689 break;
3691 case REQ_NEXT:
3692 case REQ_PREVIOUS:
3693 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3695 if (view->parent) {
3696 int line;
3698 view = view->parent;
3699 line = view->lineno;
3700 move_view(view, request);
3701 if (view_is_displayed(view))
3702 update_view_title(view);
3703 if (line != view->lineno)
3704 view->ops->request(view, REQ_ENTER,
3705 &view->line[view->lineno]);
3707 } else {
3708 move_view(view, request);
3709 }
3710 break;
3712 case REQ_VIEW_NEXT:
3713 {
3714 int nviews = displayed_views();
3715 int next_view = (current_view + 1) % nviews;
3717 if (next_view == current_view) {
3718 report("Only one view is displayed");
3719 break;
3720 }
3722 current_view = next_view;
3723 /* Blur out the title of the previous view. */
3724 update_view_title(view);
3725 report("");
3726 break;
3727 }
3728 case REQ_REFRESH:
3729 report("Refreshing is not yet supported for the %s view", view->name);
3730 break;
3732 case REQ_MAXIMIZE:
3733 if (displayed_views() == 2)
3734 maximize_view(view);
3735 break;
3737 case REQ_OPTIONS:
3738 open_option_menu();
3739 break;
3741 case REQ_TOGGLE_LINENO:
3742 toggle_view_option(&opt_line_number, "line numbers");
3743 break;
3745 case REQ_TOGGLE_DATE:
3746 toggle_date();
3747 break;
3749 case REQ_TOGGLE_AUTHOR:
3750 toggle_author();
3751 break;
3753 case REQ_TOGGLE_REV_GRAPH:
3754 toggle_view_option(&opt_rev_graph, "revision graph display");
3755 break;
3757 case REQ_TOGGLE_REFS:
3758 toggle_view_option(&opt_show_refs, "reference display");
3759 break;
3761 case REQ_TOGGLE_SORT_FIELD:
3762 case REQ_TOGGLE_SORT_ORDER:
3763 report("Sorting is not yet supported for the %s view", view->name);
3764 break;
3766 case REQ_SEARCH:
3767 case REQ_SEARCH_BACK:
3768 search_view(view, request);
3769 break;
3771 case REQ_FIND_NEXT:
3772 case REQ_FIND_PREV:
3773 find_next(view, request);
3774 break;
3776 case REQ_STOP_LOADING:
3777 foreach_view(view, i) {
3778 if (view->pipe)
3779 report("Stopped loading the %s view", view->name),
3780 end_update(view, TRUE);
3781 }
3782 break;
3784 case REQ_SHOW_VERSION:
3785 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3786 return TRUE;
3788 case REQ_SCREEN_REDRAW:
3789 redraw_display(TRUE);
3790 break;
3792 case REQ_EDIT:
3793 report("Nothing to edit");
3794 break;
3796 case REQ_ENTER:
3797 report("Nothing to enter");
3798 break;
3800 case REQ_VIEW_CLOSE:
3801 /* XXX: Mark closed views by letting view->prev point to the
3802 * view itself. Parents to closed view should never be
3803 * followed. */
3804 if (view->prev && view->prev != view) {
3805 maximize_view(view->prev);
3806 view->prev = view;
3807 break;
3808 }
3809 /* Fall-through */
3810 case REQ_QUIT:
3811 return FALSE;
3813 default:
3814 report("Unknown key, press %s for help",
3815 get_key(view->keymap, REQ_VIEW_HELP));
3816 return TRUE;
3817 }
3819 return TRUE;
3820 }
3823 /*
3824 * View backend utilities
3825 */
3827 enum sort_field {
3828 ORDERBY_NAME,
3829 ORDERBY_DATE,
3830 ORDERBY_AUTHOR,
3831 };
3833 struct sort_state {
3834 const enum sort_field *fields;
3835 size_t size, current;
3836 bool reverse;
3837 };
3839 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3840 #define get_sort_field(state) ((state).fields[(state).current])
3841 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3843 static void
3844 sort_view(struct view *view, enum request request, struct sort_state *state,
3845 int (*compare)(const void *, const void *))
3846 {
3847 switch (request) {
3848 case REQ_TOGGLE_SORT_FIELD:
3849 state->current = (state->current + 1) % state->size;
3850 break;
3852 case REQ_TOGGLE_SORT_ORDER:
3853 state->reverse = !state->reverse;
3854 break;
3855 default:
3856 die("Not a sort request");
3857 }
3859 qsort(view->line, view->lines, sizeof(*view->line), compare);
3860 redraw_view(view);
3861 }
3863 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3865 /* Small author cache to reduce memory consumption. It uses binary
3866 * search to lookup or find place to position new entries. No entries
3867 * are ever freed. */
3868 static const char *
3869 get_author(const char *name)
3870 {
3871 static const char **authors;
3872 static size_t authors_size;
3873 int from = 0, to = authors_size - 1;
3875 while (from <= to) {
3876 size_t pos = (to + from) / 2;
3877 int cmp = strcmp(name, authors[pos]);
3879 if (!cmp)
3880 return authors[pos];
3882 if (cmp < 0)
3883 to = pos - 1;
3884 else
3885 from = pos + 1;
3886 }
3888 if (!realloc_authors(&authors, authors_size, 1))
3889 return NULL;
3890 name = strdup(name);
3891 if (!name)
3892 return NULL;
3894 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3895 authors[from] = name;
3896 authors_size++;
3898 return name;
3899 }
3901 static void
3902 parse_timesec(struct time *time, const char *sec)
3903 {
3904 time->sec = (time_t) atol(sec);
3905 }
3907 static void
3908 parse_timezone(struct time *time, const char *zone)
3909 {
3910 long tz;
3912 tz = ('0' - zone[1]) * 60 * 60 * 10;
3913 tz += ('0' - zone[2]) * 60 * 60;
3914 tz += ('0' - zone[3]) * 60 * 10;
3915 tz += ('0' - zone[4]) * 60;
3917 if (zone[0] == '-')
3918 tz = -tz;
3920 time->tz = tz;
3921 time->sec -= tz;
3922 }
3924 /* Parse author lines where the name may be empty:
3925 * author <email@address.tld> 1138474660 +0100
3926 */
3927 static void
3928 parse_author_line(char *ident, const char **author, struct time *time)
3929 {
3930 char *nameend = strchr(ident, '<');
3931 char *emailend = strchr(ident, '>');
3933 if (nameend && emailend)
3934 *nameend = *emailend = 0;
3935 ident = chomp_string(ident);
3936 if (!*ident) {
3937 if (nameend)
3938 ident = chomp_string(nameend + 1);
3939 if (!*ident)
3940 ident = "Unknown";
3941 }
3943 *author = get_author(ident);
3945 /* Parse epoch and timezone */
3946 if (emailend && emailend[1] == ' ') {
3947 char *secs = emailend + 2;
3948 char *zone = strchr(secs, ' ');
3950 parse_timesec(time, secs);
3952 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3953 parse_timezone(time, zone + 1);
3954 }
3955 }
3957 static bool
3958 open_commit_parent_menu(char buf[SIZEOF_STR], int *parents)
3959 {
3960 char rev[SIZEOF_REV];
3961 const char *revlist_argv[] = {
3962 "git", "log", "--no-color", "-1", "--pretty=format:%s", rev, NULL
3963 };
3964 struct menu_item *items;
3965 char text[SIZEOF_STR];
3966 bool ok = TRUE;
3967 int i;
3969 items = calloc(*parents + 1, sizeof(*items));
3970 if (!items)
3971 return FALSE;
3973 for (i = 0; i < *parents; i++) {
3974 string_copy_rev(rev, &buf[SIZEOF_REV * i]);
3975 if (!io_run_buf(revlist_argv, text, sizeof(text)) ||
3976 !(items[i].text = strdup(text))) {
3977 ok = FALSE;
3978 break;
3979 }
3980 }
3982 if (ok) {
3983 *parents = 0;
3984 ok = prompt_menu("Select parent", items, parents);
3985 }
3986 for (i = 0; items[i].text; i++)
3987 free((char *) items[i].text);
3988 free(items);
3989 return ok;
3990 }
3992 static bool
3993 select_commit_parent(const char *id, char rev[SIZEOF_REV], const char *path)
3994 {
3995 char buf[SIZEOF_STR * 4];
3996 const char *revlist_argv[] = {
3997 "git", "log", "--no-color", "-1",
3998 "--pretty=format:%P", id, "--", path, NULL
3999 };
4000 int parents;
4002 if (!io_run_buf(revlist_argv, buf, sizeof(buf)) ||
4003 (parents = strlen(buf) / 40) < 0) {
4004 report("Failed to get parent information");
4005 return FALSE;
4007 } else if (parents == 0) {
4008 if (path)
4009 report("Path '%s' does not exist in the parent", path);
4010 else
4011 report("The selected commit has no parents");
4012 return FALSE;
4013 }
4015 if (parents > 1 && !open_commit_parent_menu(buf, &parents))
4016 return FALSE;
4018 string_copy_rev(rev, &buf[41 * parents]);
4019 return TRUE;
4020 }
4022 /*
4023 * Pager backend
4024 */
4026 static bool
4027 pager_draw(struct view *view, struct line *line, unsigned int lineno)
4028 {
4029 char text[SIZEOF_STR];
4031 if (opt_line_number && draw_lineno(view, lineno))
4032 return TRUE;
4034 string_expand(text, sizeof(text), line->data, opt_tab_size);
4035 draw_text(view, line->type, text, TRUE);
4036 return TRUE;
4037 }
4039 static bool
4040 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
4041 {
4042 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
4043 char ref[SIZEOF_STR];
4045 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
4046 return TRUE;
4048 /* This is the only fatal call, since it can "corrupt" the buffer. */
4049 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
4050 return FALSE;
4052 return TRUE;
4053 }
4055 static void
4056 add_pager_refs(struct view *view, struct line *line)
4057 {
4058 char buf[SIZEOF_STR];
4059 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
4060 struct ref_list *list;
4061 size_t bufpos = 0, i;
4062 const char *sep = "Refs: ";
4063 bool is_tag = FALSE;
4065 assert(line->type == LINE_COMMIT);
4067 list = get_ref_list(commit_id);
4068 if (!list) {
4069 if (view->type == VIEW_DIFF)
4070 goto try_add_describe_ref;
4071 return;
4072 }
4074 for (i = 0; i < list->size; i++) {
4075 struct ref *ref = list->refs[i];
4076 const char *fmt = ref->tag ? "%s[%s]" :
4077 ref->remote ? "%s<%s>" : "%s%s";
4079 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
4080 return;
4081 sep = ", ";
4082 if (ref->tag)
4083 is_tag = TRUE;
4084 }
4086 if (!is_tag && view->type == VIEW_DIFF) {
4087 try_add_describe_ref:
4088 /* Add <tag>-g<commit_id> "fake" reference. */
4089 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
4090 return;
4091 }
4093 if (bufpos == 0)
4094 return;
4096 add_line_text(view, buf, LINE_PP_REFS);
4097 }
4099 static bool
4100 pager_read(struct view *view, char *data)
4101 {
4102 struct line *line;
4104 if (!data)
4105 return TRUE;
4107 line = add_line_text(view, data, get_line_type(data));
4108 if (!line)
4109 return FALSE;
4111 if (line->type == LINE_COMMIT &&
4112 (view->type == VIEW_DIFF ||
4113 view->type == VIEW_LOG))
4114 add_pager_refs(view, line);
4116 return TRUE;
4117 }
4119 static enum request
4120 pager_request(struct view *view, enum request request, struct line *line)
4121 {
4122 int split = 0;
4124 if (request != REQ_ENTER)
4125 return request;
4127 if (line->type == LINE_COMMIT &&
4128 (view->type == VIEW_LOG ||
4129 view->type == VIEW_PAGER)) {
4130 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
4131 split = 1;
4132 }
4134 /* Always scroll the view even if it was split. That way
4135 * you can use Enter to scroll through the log view and
4136 * split open each commit diff. */
4137 scroll_view(view, REQ_SCROLL_LINE_DOWN);
4139 /* FIXME: A minor workaround. Scrolling the view will call report("")
4140 * but if we are scrolling a non-current view this won't properly
4141 * update the view title. */
4142 if (split)
4143 update_view_title(view);
4145 return REQ_NONE;
4146 }
4148 static bool
4149 pager_grep(struct view *view, struct line *line)
4150 {
4151 const char *text[] = { line->data, NULL };
4153 return grep_text(view, text);
4154 }
4156 static void
4157 pager_select(struct view *view, struct line *line)
4158 {
4159 if (line->type == LINE_COMMIT) {
4160 char *text = (char *)line->data + STRING_SIZE("commit ");
4162 if (view->type != VIEW_PAGER)
4163 string_copy_rev(view->ref, text);
4164 string_copy_rev(ref_commit, text);
4165 }
4166 }
4168 static struct view_ops pager_ops = {
4169 "line",
4170 NULL,
4171 NULL,
4172 pager_read,
4173 pager_draw,
4174 pager_request,
4175 pager_grep,
4176 pager_select,
4177 };
4179 static const char *log_argv[SIZEOF_ARG] = {
4180 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
4181 };
4183 static enum request
4184 log_request(struct view *view, enum request request, struct line *line)
4185 {
4186 switch (request) {
4187 case REQ_REFRESH:
4188 load_refs();
4189 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
4190 return REQ_NONE;
4191 default:
4192 return pager_request(view, request, line);
4193 }
4194 }
4196 static struct view_ops log_ops = {
4197 "line",
4198 log_argv,
4199 NULL,
4200 pager_read,
4201 pager_draw,
4202 log_request,
4203 pager_grep,
4204 pager_select,
4205 };
4207 static const char *diff_argv[SIZEOF_ARG] = {
4208 "git", "show", "--pretty=fuller", "--no-color", "--root",
4209 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
4210 };
4212 static struct view_ops diff_ops = {
4213 "line",
4214 diff_argv,
4215 NULL,
4216 pager_read,
4217 pager_draw,
4218 pager_request,
4219 pager_grep,
4220 pager_select,
4221 };
4223 /*
4224 * Help backend
4225 */
4227 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
4229 static bool
4230 help_open_keymap_title(struct view *view, enum keymap keymap)
4231 {
4232 struct line *line;
4234 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
4235 help_keymap_hidden[keymap] ? '+' : '-',
4236 enum_name(keymap_table[keymap]));
4237 if (line)
4238 line->other = keymap;
4240 return help_keymap_hidden[keymap];
4241 }
4243 static void
4244 help_open_keymap(struct view *view, enum keymap keymap)
4245 {
4246 const char *group = NULL;
4247 char buf[SIZEOF_STR];
4248 size_t bufpos;
4249 bool add_title = TRUE;
4250 int i;
4252 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
4253 const char *key = NULL;
4255 if (req_info[i].request == REQ_NONE)
4256 continue;
4258 if (!req_info[i].request) {
4259 group = req_info[i].help;
4260 continue;
4261 }
4263 key = get_keys(keymap, req_info[i].request, TRUE);
4264 if (!key || !*key)
4265 continue;
4267 if (add_title && help_open_keymap_title(view, keymap))
4268 return;
4269 add_title = FALSE;
4271 if (group) {
4272 add_line_text(view, group, LINE_HELP_GROUP);
4273 group = NULL;
4274 }
4276 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
4277 enum_name(req_info[i]), req_info[i].help);
4278 }
4280 group = "External commands:";
4282 for (i = 0; i < run_requests; i++) {
4283 struct run_request *req = get_run_request(REQ_NONE + i + 1);
4284 const char *key;
4285 int argc;
4287 if (!req || req->keymap != keymap)
4288 continue;
4290 key = get_key_name(req->key);
4291 if (!*key)
4292 key = "(no key defined)";
4294 if (add_title && help_open_keymap_title(view, keymap))
4295 return;
4296 if (group) {
4297 add_line_text(view, group, LINE_HELP_GROUP);
4298 group = NULL;
4299 }
4301 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
4302 if (!string_format_from(buf, &bufpos, "%s%s",
4303 argc ? " " : "", req->argv[argc]))
4304 return;
4306 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
4307 }
4308 }
4310 static bool
4311 help_open(struct view *view)
4312 {
4313 enum keymap keymap;
4315 reset_view(view);
4316 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
4317 add_line_text(view, "", LINE_DEFAULT);
4319 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
4320 help_open_keymap(view, keymap);
4322 return TRUE;
4323 }
4325 static enum request
4326 help_request(struct view *view, enum request request, struct line *line)
4327 {
4328 switch (request) {
4329 case REQ_ENTER:
4330 if (line->type == LINE_HELP_KEYMAP) {
4331 help_keymap_hidden[line->other] =
4332 !help_keymap_hidden[line->other];
4333 view->p_restore = TRUE;
4334 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
4335 }
4337 return REQ_NONE;
4338 default:
4339 return pager_request(view, request, line);
4340 }
4341 }
4343 static struct view_ops help_ops = {
4344 "line",
4345 NULL,
4346 help_open,
4347 NULL,
4348 pager_draw,
4349 help_request,
4350 pager_grep,
4351 pager_select,
4352 };
4355 /*
4356 * Tree backend
4357 */
4359 struct tree_stack_entry {
4360 struct tree_stack_entry *prev; /* Entry below this in the stack */
4361 unsigned long lineno; /* Line number to restore */
4362 char *name; /* Position of name in opt_path */
4363 };
4365 /* The top of the path stack. */
4366 static struct tree_stack_entry *tree_stack = NULL;
4367 unsigned long tree_lineno = 0;
4369 static void
4370 pop_tree_stack_entry(void)
4371 {
4372 struct tree_stack_entry *entry = tree_stack;
4374 tree_lineno = entry->lineno;
4375 entry->name[0] = 0;
4376 tree_stack = entry->prev;
4377 free(entry);
4378 }
4380 static void
4381 push_tree_stack_entry(const char *name, unsigned long lineno)
4382 {
4383 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
4384 size_t pathlen = strlen(opt_path);
4386 if (!entry)
4387 return;
4389 entry->prev = tree_stack;
4390 entry->name = opt_path + pathlen;
4391 tree_stack = entry;
4393 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
4394 pop_tree_stack_entry();
4395 return;
4396 }
4398 /* Move the current line to the first tree entry. */
4399 tree_lineno = 1;
4400 entry->lineno = lineno;
4401 }
4403 /* Parse output from git-ls-tree(1):
4404 *
4405 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
4406 */
4408 #define SIZEOF_TREE_ATTR \
4409 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
4411 #define SIZEOF_TREE_MODE \
4412 STRING_SIZE("100644 ")
4414 #define TREE_ID_OFFSET \
4415 STRING_SIZE("100644 blob ")
4417 struct tree_entry {
4418 char id[SIZEOF_REV];
4419 mode_t mode;
4420 struct time time; /* Date from the author ident. */
4421 const char *author; /* Author of the commit. */
4422 char name[1];
4423 };
4425 static const char *
4426 tree_path(const struct line *line)
4427 {
4428 return ((struct tree_entry *) line->data)->name;
4429 }
4431 static int
4432 tree_compare_entry(const struct line *line1, const struct line *line2)
4433 {
4434 if (line1->type != line2->type)
4435 return line1->type == LINE_TREE_DIR ? -1 : 1;
4436 return strcmp(tree_path(line1), tree_path(line2));
4437 }
4439 static const enum sort_field tree_sort_fields[] = {
4440 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4441 };
4442 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
4444 static int
4445 tree_compare(const void *l1, const void *l2)
4446 {
4447 const struct line *line1 = (const struct line *) l1;
4448 const struct line *line2 = (const struct line *) l2;
4449 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
4450 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
4452 if (line1->type == LINE_TREE_HEAD)
4453 return -1;
4454 if (line2->type == LINE_TREE_HEAD)
4455 return 1;
4457 switch (get_sort_field(tree_sort_state)) {
4458 case ORDERBY_DATE:
4459 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
4461 case ORDERBY_AUTHOR:
4462 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
4464 case ORDERBY_NAME:
4465 default:
4466 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
4467 }
4468 }
4471 static struct line *
4472 tree_entry(struct view *view, enum line_type type, const char *path,
4473 const char *mode, const char *id)
4474 {
4475 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
4476 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
4478 if (!entry || !line) {
4479 free(entry);
4480 return NULL;
4481 }
4483 strncpy(entry->name, path, strlen(path));
4484 if (mode)
4485 entry->mode = strtoul(mode, NULL, 8);
4486 if (id)
4487 string_copy_rev(entry->id, id);
4489 return line;
4490 }
4492 static bool
4493 tree_read_date(struct view *view, char *text, bool *read_date)
4494 {
4495 static const char *author_name;
4496 static struct time author_time;
4498 if (!text && *read_date) {
4499 *read_date = FALSE;
4500 return TRUE;
4502 } else if (!text) {
4503 char *path = *opt_path ? opt_path : ".";
4504 /* Find next entry to process */
4505 const char *log_file[] = {
4506 "git", "log", "--no-color", "--pretty=raw",
4507 "--cc", "--raw", view->id, "--", path, NULL
4508 };
4509 struct io io = {};
4511 if (!view->lines) {
4512 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
4513 report("Tree is empty");
4514 return TRUE;
4515 }
4517 if (!io_run_rd(&io, log_file, opt_cdup, FORMAT_NONE)) {
4518 report("Failed to load tree data");
4519 return TRUE;
4520 }
4522 io_done(view->pipe);
4523 view->io = io;
4524 *read_date = TRUE;
4525 return FALSE;
4527 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
4528 parse_author_line(text + STRING_SIZE("author "),
4529 &author_name, &author_time);
4531 } else if (*text == ':') {
4532 char *pos;
4533 size_t annotated = 1;
4534 size_t i;
4536 pos = strchr(text, '\t');
4537 if (!pos)
4538 return TRUE;
4539 text = pos + 1;
4540 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
4541 text += strlen(opt_path);
4542 pos = strchr(text, '/');
4543 if (pos)
4544 *pos = 0;
4546 for (i = 1; i < view->lines; i++) {
4547 struct line *line = &view->line[i];
4548 struct tree_entry *entry = line->data;
4550 annotated += !!entry->author;
4551 if (entry->author || strcmp(entry->name, text))
4552 continue;
4554 entry->author = author_name;
4555 entry->time = author_time;
4556 line->dirty = 1;
4557 break;
4558 }
4560 if (annotated == view->lines)
4561 io_kill(view->pipe);
4562 }
4563 return TRUE;
4564 }
4566 static bool
4567 tree_read(struct view *view, char *text)
4568 {
4569 static bool read_date = FALSE;
4570 struct tree_entry *data;
4571 struct line *entry, *line;
4572 enum line_type type;
4573 size_t textlen = text ? strlen(text) : 0;
4574 char *path = text + SIZEOF_TREE_ATTR;
4576 if (read_date || !text)
4577 return tree_read_date(view, text, &read_date);
4579 if (textlen <= SIZEOF_TREE_ATTR)
4580 return FALSE;
4581 if (view->lines == 0 &&
4582 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
4583 return FALSE;
4585 /* Strip the path part ... */
4586 if (*opt_path) {
4587 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
4588 size_t striplen = strlen(opt_path);
4590 if (pathlen > striplen)
4591 memmove(path, path + striplen,
4592 pathlen - striplen + 1);
4594 /* Insert "link" to parent directory. */
4595 if (view->lines == 1 &&
4596 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
4597 return FALSE;
4598 }
4600 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
4601 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
4602 if (!entry)
4603 return FALSE;
4604 data = entry->data;
4606 /* Skip "Directory ..." and ".." line. */
4607 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4608 if (tree_compare_entry(line, entry) <= 0)
4609 continue;
4611 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4613 line->data = data;
4614 line->type = type;
4615 for (; line <= entry; line++)
4616 line->dirty = line->cleareol = 1;
4617 return TRUE;
4618 }
4620 if (tree_lineno > view->lineno) {
4621 view->lineno = tree_lineno;
4622 tree_lineno = 0;
4623 }
4625 return TRUE;
4626 }
4628 static bool
4629 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4630 {
4631 struct tree_entry *entry = line->data;
4633 if (line->type == LINE_TREE_HEAD) {
4634 if (draw_text(view, line->type, "Directory path /", TRUE))
4635 return TRUE;
4636 } else {
4637 if (draw_mode(view, entry->mode))
4638 return TRUE;
4640 if (opt_author && draw_author(view, entry->author))
4641 return TRUE;
4643 if (opt_date && draw_date(view, &entry->time))
4644 return TRUE;
4645 }
4646 if (draw_text(view, line->type, entry->name, TRUE))
4647 return TRUE;
4648 return TRUE;
4649 }
4651 static void
4652 open_blob_editor()
4653 {
4654 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4655 int fd = mkstemp(file);
4657 if (fd == -1)
4658 report("Failed to create temporary file");
4659 else if (!io_run_append(blob_ops.argv, FORMAT_ALL, fd))
4660 report("Failed to save blob data to file");
4661 else
4662 open_editor(file);
4663 if (fd != -1)
4664 unlink(file);
4665 }
4667 static enum request
4668 tree_request(struct view *view, enum request request, struct line *line)
4669 {
4670 enum open_flags flags;
4672 switch (request) {
4673 case REQ_VIEW_BLAME:
4674 if (line->type != LINE_TREE_FILE) {
4675 report("Blame only supported for files");
4676 return REQ_NONE;
4677 }
4679 string_copy(opt_ref, view->vid);
4680 return request;
4682 case REQ_EDIT:
4683 if (line->type != LINE_TREE_FILE) {
4684 report("Edit only supported for files");
4685 } else if (!is_head_commit(view->vid)) {
4686 open_blob_editor();
4687 } else {
4688 open_editor(opt_file);
4689 }
4690 return REQ_NONE;
4692 case REQ_TOGGLE_SORT_FIELD:
4693 case REQ_TOGGLE_SORT_ORDER:
4694 sort_view(view, request, &tree_sort_state, tree_compare);
4695 return REQ_NONE;
4697 case REQ_PARENT:
4698 if (!*opt_path) {
4699 /* quit view if at top of tree */
4700 return REQ_VIEW_CLOSE;
4701 }
4702 /* fake 'cd ..' */
4703 line = &view->line[1];
4704 break;
4706 case REQ_ENTER:
4707 break;
4709 default:
4710 return request;
4711 }
4713 /* Cleanup the stack if the tree view is at a different tree. */
4714 while (!*opt_path && tree_stack)
4715 pop_tree_stack_entry();
4717 switch (line->type) {
4718 case LINE_TREE_DIR:
4719 /* Depending on whether it is a subdirectory or parent link
4720 * mangle the path buffer. */
4721 if (line == &view->line[1] && *opt_path) {
4722 pop_tree_stack_entry();
4724 } else {
4725 const char *basename = tree_path(line);
4727 push_tree_stack_entry(basename, view->lineno);
4728 }
4730 /* Trees and subtrees share the same ID, so they are not not
4731 * unique like blobs. */
4732 flags = OPEN_RELOAD;
4733 request = REQ_VIEW_TREE;
4734 break;
4736 case LINE_TREE_FILE:
4737 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4738 request = REQ_VIEW_BLOB;
4739 break;
4741 default:
4742 return REQ_NONE;
4743 }
4745 open_view(view, request, flags);
4746 if (request == REQ_VIEW_TREE)
4747 view->lineno = tree_lineno;
4749 return REQ_NONE;
4750 }
4752 static bool
4753 tree_grep(struct view *view, struct line *line)
4754 {
4755 struct tree_entry *entry = line->data;
4756 const char *text[] = {
4757 entry->name,
4758 opt_author ? entry->author : "",
4759 mkdate(&entry->time, opt_date),
4760 NULL
4761 };
4763 return grep_text(view, text);
4764 }
4766 static void
4767 tree_select(struct view *view, struct line *line)
4768 {
4769 struct tree_entry *entry = line->data;
4771 if (line->type == LINE_TREE_FILE) {
4772 string_copy_rev(ref_blob, entry->id);
4773 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4775 } else if (line->type != LINE_TREE_DIR) {
4776 return;
4777 }
4779 string_copy_rev(view->ref, entry->id);
4780 }
4782 static bool
4783 tree_prepare(struct view *view)
4784 {
4785 if (view->lines == 0 && opt_prefix[0]) {
4786 char *pos = opt_prefix;
4788 while (pos && *pos) {
4789 char *end = strchr(pos, '/');
4791 if (end)
4792 *end = 0;
4793 push_tree_stack_entry(pos, 0);
4794 pos = end;
4795 if (end) {
4796 *end = '/';
4797 pos++;
4798 }
4799 }
4801 } else if (strcmp(view->vid, view->id)) {
4802 opt_path[0] = 0;
4803 }
4805 return io_format(&view->io, opt_cdup, IO_RD, view->ops->argv, FORMAT_ALL);
4806 }
4808 static const char *tree_argv[SIZEOF_ARG] = {
4809 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4810 };
4812 static struct view_ops tree_ops = {
4813 "file",
4814 tree_argv,
4815 NULL,
4816 tree_read,
4817 tree_draw,
4818 tree_request,
4819 tree_grep,
4820 tree_select,
4821 tree_prepare,
4822 };
4824 static bool
4825 blob_read(struct view *view, char *line)
4826 {
4827 if (!line)
4828 return TRUE;
4829 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4830 }
4832 static enum request
4833 blob_request(struct view *view, enum request request, struct line *line)
4834 {
4835 switch (request) {
4836 case REQ_EDIT:
4837 open_blob_editor();
4838 return REQ_NONE;
4839 default:
4840 return pager_request(view, request, line);
4841 }
4842 }
4844 static const char *blob_argv[SIZEOF_ARG] = {
4845 "git", "cat-file", "blob", "%(blob)", NULL
4846 };
4848 static struct view_ops blob_ops = {
4849 "line",
4850 blob_argv,
4851 NULL,
4852 blob_read,
4853 pager_draw,
4854 blob_request,
4855 pager_grep,
4856 pager_select,
4857 };
4859 /*
4860 * Blame backend
4861 *
4862 * Loading the blame view is a two phase job:
4863 *
4864 * 1. File content is read either using opt_file from the
4865 * filesystem or using git-cat-file.
4866 * 2. Then blame information is incrementally added by
4867 * reading output from git-blame.
4868 */
4870 static const char *blame_head_argv[] = {
4871 "git", "blame", "--incremental", "--", "%(file)", NULL
4872 };
4874 static const char *blame_ref_argv[] = {
4875 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4876 };
4878 static const char *blame_cat_file_argv[] = {
4879 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4880 };
4882 struct blame_commit {
4883 char id[SIZEOF_REV]; /* SHA1 ID. */
4884 char title[128]; /* First line of the commit message. */
4885 const char *author; /* Author of the commit. */
4886 struct time time; /* Date from the author ident. */
4887 char filename[128]; /* Name of file. */
4888 bool has_previous; /* Was a "previous" line detected. */
4889 };
4891 struct blame {
4892 struct blame_commit *commit;
4893 unsigned long lineno;
4894 char text[1];
4895 };
4897 static bool
4898 blame_open(struct view *view)
4899 {
4900 char path[SIZEOF_STR];
4902 if (!view->prev && *opt_prefix) {
4903 string_copy(path, opt_file);
4904 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4905 return FALSE;
4906 }
4908 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4909 if (!io_run_rd(&view->io, blame_cat_file_argv, opt_cdup, FORMAT_ALL))
4910 return FALSE;
4911 }
4913 setup_update(view, opt_file);
4914 string_format(view->ref, "%s ...", opt_file);
4916 return TRUE;
4917 }
4919 static struct blame_commit *
4920 get_blame_commit(struct view *view, const char *id)
4921 {
4922 size_t i;
4924 for (i = 0; i < view->lines; i++) {
4925 struct blame *blame = view->line[i].data;
4927 if (!blame->commit)
4928 continue;
4930 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4931 return blame->commit;
4932 }
4934 {
4935 struct blame_commit *commit = calloc(1, sizeof(*commit));
4937 if (commit)
4938 string_ncopy(commit->id, id, SIZEOF_REV);
4939 return commit;
4940 }
4941 }
4943 static bool
4944 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4945 {
4946 const char *pos = *posref;
4948 *posref = NULL;
4949 pos = strchr(pos + 1, ' ');
4950 if (!pos || !isdigit(pos[1]))
4951 return FALSE;
4952 *number = atoi(pos + 1);
4953 if (*number < min || *number > max)
4954 return FALSE;
4956 *posref = pos;
4957 return TRUE;
4958 }
4960 static struct blame_commit *
4961 parse_blame_commit(struct view *view, const char *text, int *blamed)
4962 {
4963 struct blame_commit *commit;
4964 struct blame *blame;
4965 const char *pos = text + SIZEOF_REV - 2;
4966 size_t orig_lineno = 0;
4967 size_t lineno;
4968 size_t group;
4970 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4971 return NULL;
4973 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4974 !parse_number(&pos, &lineno, 1, view->lines) ||
4975 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4976 return NULL;
4978 commit = get_blame_commit(view, text);
4979 if (!commit)
4980 return NULL;
4982 *blamed += group;
4983 while (group--) {
4984 struct line *line = &view->line[lineno + group - 1];
4986 blame = line->data;
4987 blame->commit = commit;
4988 blame->lineno = orig_lineno + group - 1;
4989 line->dirty = 1;
4990 }
4992 return commit;
4993 }
4995 static bool
4996 blame_read_file(struct view *view, const char *line, bool *read_file)
4997 {
4998 if (!line) {
4999 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
5000 struct io io = {};
5002 if (view->lines == 0 && !view->prev)
5003 die("No blame exist for %s", view->vid);
5005 if (view->lines == 0 || !io_run_rd(&io, argv, opt_cdup, FORMAT_ALL)) {
5006 report("Failed to load blame data");
5007 return TRUE;
5008 }
5010 io_done(view->pipe);
5011 view->io = io;
5012 *read_file = FALSE;
5013 return FALSE;
5015 } else {
5016 size_t linelen = strlen(line);
5017 struct blame *blame = malloc(sizeof(*blame) + linelen);
5019 if (!blame)
5020 return FALSE;
5022 blame->commit = NULL;
5023 strncpy(blame->text, line, linelen);
5024 blame->text[linelen] = 0;
5025 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
5026 }
5027 }
5029 static bool
5030 match_blame_header(const char *name, char **line)
5031 {
5032 size_t namelen = strlen(name);
5033 bool matched = !strncmp(name, *line, namelen);
5035 if (matched)
5036 *line += namelen;
5038 return matched;
5039 }
5041 static bool
5042 blame_read(struct view *view, char *line)
5043 {
5044 static struct blame_commit *commit = NULL;
5045 static int blamed = 0;
5046 static bool read_file = TRUE;
5048 if (read_file)
5049 return blame_read_file(view, line, &read_file);
5051 if (!line) {
5052 /* Reset all! */
5053 commit = NULL;
5054 blamed = 0;
5055 read_file = TRUE;
5056 string_format(view->ref, "%s", view->vid);
5057 if (view_is_displayed(view)) {
5058 update_view_title(view);
5059 redraw_view_from(view, 0);
5060 }
5061 return TRUE;
5062 }
5064 if (!commit) {
5065 commit = parse_blame_commit(view, line, &blamed);
5066 string_format(view->ref, "%s %2d%%", view->vid,
5067 view->lines ? blamed * 100 / view->lines : 0);
5069 } else if (match_blame_header("author ", &line)) {
5070 commit->author = get_author(line);
5072 } else if (match_blame_header("author-time ", &line)) {
5073 parse_timesec(&commit->time, line);
5075 } else if (match_blame_header("author-tz ", &line)) {
5076 parse_timezone(&commit->time, line);
5078 } else if (match_blame_header("summary ", &line)) {
5079 string_ncopy(commit->title, line, strlen(line));
5081 } else if (match_blame_header("previous ", &line)) {
5082 commit->has_previous = TRUE;
5084 } else if (match_blame_header("filename ", &line)) {
5085 string_ncopy(commit->filename, line, strlen(line));
5086 commit = NULL;
5087 }
5089 return TRUE;
5090 }
5092 static bool
5093 blame_draw(struct view *view, struct line *line, unsigned int lineno)
5094 {
5095 struct blame *blame = line->data;
5096 struct time *time = NULL;
5097 const char *id = NULL, *author = NULL;
5098 char text[SIZEOF_STR];
5100 if (blame->commit && *blame->commit->filename) {
5101 id = blame->commit->id;
5102 author = blame->commit->author;
5103 time = &blame->commit->time;
5104 }
5106 if (opt_date && draw_date(view, time))
5107 return TRUE;
5109 if (opt_author && draw_author(view, author))
5110 return TRUE;
5112 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
5113 return TRUE;
5115 if (draw_lineno(view, lineno))
5116 return TRUE;
5118 string_expand(text, sizeof(text), blame->text, opt_tab_size);
5119 draw_text(view, LINE_DEFAULT, text, TRUE);
5120 return TRUE;
5121 }
5123 static bool
5124 check_blame_commit(struct blame *blame, bool check_null_id)
5125 {
5126 if (!blame->commit)
5127 report("Commit data not loaded yet");
5128 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
5129 report("No commit exist for the selected line");
5130 else
5131 return TRUE;
5132 return FALSE;
5133 }
5135 static void
5136 setup_blame_parent_line(struct view *view, struct blame *blame)
5137 {
5138 const char *diff_tree_argv[] = {
5139 "git", "diff-tree", "-U0", blame->commit->id,
5140 "--", blame->commit->filename, NULL
5141 };
5142 struct io io = {};
5143 int parent_lineno = -1;
5144 int blamed_lineno = -1;
5145 char *line;
5147 if (!io_run(&io, diff_tree_argv, NULL, IO_RD))
5148 return;
5150 while ((line = io_get(&io, '\n', TRUE))) {
5151 if (*line == '@') {
5152 char *pos = strchr(line, '+');
5154 parent_lineno = atoi(line + 4);
5155 if (pos)
5156 blamed_lineno = atoi(pos + 1);
5158 } else if (*line == '+' && parent_lineno != -1) {
5159 if (blame->lineno == blamed_lineno - 1 &&
5160 !strcmp(blame->text, line + 1)) {
5161 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
5162 break;
5163 }
5164 blamed_lineno++;
5165 }
5166 }
5168 io_done(&io);
5169 }
5171 static enum request
5172 blame_request(struct view *view, enum request request, struct line *line)
5173 {
5174 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5175 struct blame *blame = line->data;
5177 switch (request) {
5178 case REQ_VIEW_BLAME:
5179 if (check_blame_commit(blame, TRUE)) {
5180 string_copy(opt_ref, blame->commit->id);
5181 string_copy(opt_file, blame->commit->filename);
5182 if (blame->lineno)
5183 view->lineno = blame->lineno;
5184 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
5185 }
5186 break;
5188 case REQ_PARENT:
5189 if (check_blame_commit(blame, TRUE) &&
5190 select_commit_parent(blame->commit->id, opt_ref,
5191 blame->commit->filename)) {
5192 string_copy(opt_file, blame->commit->filename);
5193 setup_blame_parent_line(view, blame);
5194 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
5195 }
5196 break;
5198 case REQ_ENTER:
5199 if (!check_blame_commit(blame, FALSE))
5200 break;
5202 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
5203 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
5204 break;
5206 if (!strcmp(blame->commit->id, NULL_ID)) {
5207 struct view *diff = VIEW(REQ_VIEW_DIFF);
5208 const char *diff_index_argv[] = {
5209 "git", "diff-index", "--root", "--patch-with-stat",
5210 "-C", "-M", "HEAD", "--", view->vid, NULL
5211 };
5213 if (!blame->commit->has_previous) {
5214 diff_index_argv[1] = "diff";
5215 diff_index_argv[2] = "--no-color";
5216 diff_index_argv[6] = "--";
5217 diff_index_argv[7] = "/dev/null";
5218 }
5220 if (!prepare_update(diff, diff_index_argv, NULL)) {
5221 report("Failed to allocate diff command");
5222 break;
5223 }
5224 flags |= OPEN_PREPARED;
5225 }
5227 open_view(view, REQ_VIEW_DIFF, flags);
5228 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
5229 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
5230 break;
5232 default:
5233 return request;
5234 }
5236 return REQ_NONE;
5237 }
5239 static bool
5240 blame_grep(struct view *view, struct line *line)
5241 {
5242 struct blame *blame = line->data;
5243 struct blame_commit *commit = blame->commit;
5244 const char *text[] = {
5245 blame->text,
5246 commit ? commit->title : "",
5247 commit ? commit->id : "",
5248 commit && opt_author ? commit->author : "",
5249 commit ? mkdate(&commit->time, opt_date) : "",
5250 NULL
5251 };
5253 return grep_text(view, text);
5254 }
5256 static void
5257 blame_select(struct view *view, struct line *line)
5258 {
5259 struct blame *blame = line->data;
5260 struct blame_commit *commit = blame->commit;
5262 if (!commit)
5263 return;
5265 if (!strcmp(commit->id, NULL_ID))
5266 string_ncopy(ref_commit, "HEAD", 4);
5267 else
5268 string_copy_rev(ref_commit, commit->id);
5269 }
5271 static struct view_ops blame_ops = {
5272 "line",
5273 NULL,
5274 blame_open,
5275 blame_read,
5276 blame_draw,
5277 blame_request,
5278 blame_grep,
5279 blame_select,
5280 };
5282 /*
5283 * Branch backend
5284 */
5286 struct branch {
5287 const char *author; /* Author of the last commit. */
5288 struct time time; /* Date of the last activity. */
5289 const struct ref *ref; /* Name and commit ID information. */
5290 };
5292 static const struct ref branch_all;
5294 static const enum sort_field branch_sort_fields[] = {
5295 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
5296 };
5297 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
5299 static int
5300 branch_compare(const void *l1, const void *l2)
5301 {
5302 const struct branch *branch1 = ((const struct line *) l1)->data;
5303 const struct branch *branch2 = ((const struct line *) l2)->data;
5305 switch (get_sort_field(branch_sort_state)) {
5306 case ORDERBY_DATE:
5307 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
5309 case ORDERBY_AUTHOR:
5310 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
5312 case ORDERBY_NAME:
5313 default:
5314 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
5315 }
5316 }
5318 static bool
5319 branch_draw(struct view *view, struct line *line, unsigned int lineno)
5320 {
5321 struct branch *branch = line->data;
5322 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
5324 if (opt_date && draw_date(view, &branch->time))
5325 return TRUE;
5327 if (opt_author && draw_author(view, branch->author))
5328 return TRUE;
5330 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name, TRUE);
5331 return TRUE;
5332 }
5334 static enum request
5335 branch_request(struct view *view, enum request request, struct line *line)
5336 {
5337 struct branch *branch = line->data;
5339 switch (request) {
5340 case REQ_REFRESH:
5341 load_refs();
5342 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
5343 return REQ_NONE;
5345 case REQ_TOGGLE_SORT_FIELD:
5346 case REQ_TOGGLE_SORT_ORDER:
5347 sort_view(view, request, &branch_sort_state, branch_compare);
5348 return REQ_NONE;
5350 case REQ_ENTER:
5351 if (branch->ref == &branch_all) {
5352 const char *all_branches_argv[] = {
5353 "git", "log", "--no-color", "--pretty=raw", "--parents",
5354 "--topo-order", "--all", NULL
5355 };
5356 struct view *main_view = VIEW(REQ_VIEW_MAIN);
5358 if (!prepare_update(main_view, all_branches_argv, NULL)) {
5359 report("Failed to load view of all branches");
5360 return REQ_NONE;
5361 }
5362 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
5363 } else {
5364 open_view(view, REQ_VIEW_MAIN, OPEN_SPLIT);
5365 }
5366 return REQ_NONE;
5368 default:
5369 return request;
5370 }
5371 }
5373 static bool
5374 branch_read(struct view *view, char *line)
5375 {
5376 static char id[SIZEOF_REV];
5377 struct branch *reference;
5378 size_t i;
5380 if (!line)
5381 return TRUE;
5383 switch (get_line_type(line)) {
5384 case LINE_COMMIT:
5385 string_copy_rev(id, line + STRING_SIZE("commit "));
5386 return TRUE;
5388 case LINE_AUTHOR:
5389 for (i = 0, reference = NULL; i < view->lines; i++) {
5390 struct branch *branch = view->line[i].data;
5392 if (strcmp(branch->ref->id, id))
5393 continue;
5395 view->line[i].dirty = TRUE;
5396 if (reference) {
5397 branch->author = reference->author;
5398 branch->time = reference->time;
5399 continue;
5400 }
5402 parse_author_line(line + STRING_SIZE("author "),
5403 &branch->author, &branch->time);
5404 reference = branch;
5405 }
5406 return TRUE;
5408 default:
5409 return TRUE;
5410 }
5412 }
5414 static bool
5415 branch_open_visitor(void *data, const struct ref *ref)
5416 {
5417 struct view *view = data;
5418 struct branch *branch;
5420 if (ref->tag || ref->ltag || ref->remote)
5421 return TRUE;
5423 branch = calloc(1, sizeof(*branch));
5424 if (!branch)
5425 return FALSE;
5427 branch->ref = ref;
5428 return !!add_line_data(view, branch, LINE_DEFAULT);
5429 }
5431 static bool
5432 branch_open(struct view *view)
5433 {
5434 const char *branch_log[] = {
5435 "git", "log", "--no-color", "--pretty=raw",
5436 "--simplify-by-decoration", "--all", NULL
5437 };
5439 if (!io_run_rd(&view->io, branch_log, NULL, FORMAT_NONE)) {
5440 report("Failed to load branch data");
5441 return TRUE;
5442 }
5444 setup_update(view, view->id);
5445 branch_open_visitor(view, &branch_all);
5446 foreach_ref(branch_open_visitor, view);
5447 view->p_restore = TRUE;
5449 return TRUE;
5450 }
5452 static bool
5453 branch_grep(struct view *view, struct line *line)
5454 {
5455 struct branch *branch = line->data;
5456 const char *text[] = {
5457 branch->ref->name,
5458 branch->author,
5459 NULL
5460 };
5462 return grep_text(view, text);
5463 }
5465 static void
5466 branch_select(struct view *view, struct line *line)
5467 {
5468 struct branch *branch = line->data;
5470 string_copy_rev(view->ref, branch->ref->id);
5471 string_copy_rev(ref_commit, branch->ref->id);
5472 string_copy_rev(ref_head, branch->ref->id);
5473 string_copy_rev(ref_branch, branch->ref->name);
5474 }
5476 static struct view_ops branch_ops = {
5477 "branch",
5478 NULL,
5479 branch_open,
5480 branch_read,
5481 branch_draw,
5482 branch_request,
5483 branch_grep,
5484 branch_select,
5485 };
5487 /*
5488 * Status backend
5489 */
5491 struct status {
5492 char status;
5493 struct {
5494 mode_t mode;
5495 char rev[SIZEOF_REV];
5496 char name[SIZEOF_STR];
5497 } old;
5498 struct {
5499 mode_t mode;
5500 char rev[SIZEOF_REV];
5501 char name[SIZEOF_STR];
5502 } new;
5503 };
5505 static char status_onbranch[SIZEOF_STR];
5506 static struct status stage_status;
5507 static enum line_type stage_line_type;
5508 static size_t stage_chunks;
5509 static int *stage_chunk;
5511 DEFINE_ALLOCATOR(realloc_ints, int, 32)
5513 /* This should work even for the "On branch" line. */
5514 static inline bool
5515 status_has_none(struct view *view, struct line *line)
5516 {
5517 return line < view->line + view->lines && !line[1].data;
5518 }
5520 /* Get fields from the diff line:
5521 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
5522 */
5523 static inline bool
5524 status_get_diff(struct status *file, const char *buf, size_t bufsize)
5525 {
5526 const char *old_mode = buf + 1;
5527 const char *new_mode = buf + 8;
5528 const char *old_rev = buf + 15;
5529 const char *new_rev = buf + 56;
5530 const char *status = buf + 97;
5532 if (bufsize < 98 ||
5533 old_mode[-1] != ':' ||
5534 new_mode[-1] != ' ' ||
5535 old_rev[-1] != ' ' ||
5536 new_rev[-1] != ' ' ||
5537 status[-1] != ' ')
5538 return FALSE;
5540 file->status = *status;
5542 string_copy_rev(file->old.rev, old_rev);
5543 string_copy_rev(file->new.rev, new_rev);
5545 file->old.mode = strtoul(old_mode, NULL, 8);
5546 file->new.mode = strtoul(new_mode, NULL, 8);
5548 file->old.name[0] = file->new.name[0] = 0;
5550 return TRUE;
5551 }
5553 static bool
5554 status_run(struct view *view, const char *argv[], char status, enum line_type type)
5555 {
5556 struct status *unmerged = NULL;
5557 char *buf;
5558 struct io io = {};
5560 if (!io_run(&io, argv, opt_cdup, IO_RD))
5561 return FALSE;
5563 add_line_data(view, NULL, type);
5565 while ((buf = io_get(&io, 0, TRUE))) {
5566 struct status *file = unmerged;
5568 if (!file) {
5569 file = calloc(1, sizeof(*file));
5570 if (!file || !add_line_data(view, file, type))
5571 goto error_out;
5572 }
5574 /* Parse diff info part. */
5575 if (status) {
5576 file->status = status;
5577 if (status == 'A')
5578 string_copy(file->old.rev, NULL_ID);
5580 } else if (!file->status || file == unmerged) {
5581 if (!status_get_diff(file, buf, strlen(buf)))
5582 goto error_out;
5584 buf = io_get(&io, 0, TRUE);
5585 if (!buf)
5586 break;
5588 /* Collapse all modified entries that follow an
5589 * associated unmerged entry. */
5590 if (unmerged == file) {
5591 unmerged->status = 'U';
5592 unmerged = NULL;
5593 } else if (file->status == 'U') {
5594 unmerged = file;
5595 }
5596 }
5598 /* Grab the old name for rename/copy. */
5599 if (!*file->old.name &&
5600 (file->status == 'R' || file->status == 'C')) {
5601 string_ncopy(file->old.name, buf, strlen(buf));
5603 buf = io_get(&io, 0, TRUE);
5604 if (!buf)
5605 break;
5606 }
5608 /* git-ls-files just delivers a NUL separated list of
5609 * file names similar to the second half of the
5610 * git-diff-* output. */
5611 string_ncopy(file->new.name, buf, strlen(buf));
5612 if (!*file->old.name)
5613 string_copy(file->old.name, file->new.name);
5614 file = NULL;
5615 }
5617 if (io_error(&io)) {
5618 error_out:
5619 io_done(&io);
5620 return FALSE;
5621 }
5623 if (!view->line[view->lines - 1].data)
5624 add_line_data(view, NULL, LINE_STAT_NONE);
5626 io_done(&io);
5627 return TRUE;
5628 }
5630 /* Don't show unmerged entries in the staged section. */
5631 static const char *status_diff_index_argv[] = {
5632 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
5633 "--cached", "-M", "HEAD", NULL
5634 };
5636 static const char *status_diff_files_argv[] = {
5637 "git", "diff-files", "-z", NULL
5638 };
5640 static const char *status_list_other_argv[] = {
5641 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL
5642 };
5644 static const char *status_list_no_head_argv[] = {
5645 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
5646 };
5648 static const char *update_index_argv[] = {
5649 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
5650 };
5652 /* Restore the previous line number to stay in the context or select a
5653 * line with something that can be updated. */
5654 static void
5655 status_restore(struct view *view)
5656 {
5657 if (view->p_lineno >= view->lines)
5658 view->p_lineno = view->lines - 1;
5659 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
5660 view->p_lineno++;
5661 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
5662 view->p_lineno--;
5664 /* If the above fails, always skip the "On branch" line. */
5665 if (view->p_lineno < view->lines)
5666 view->lineno = view->p_lineno;
5667 else
5668 view->lineno = 1;
5670 if (view->lineno < view->offset)
5671 view->offset = view->lineno;
5672 else if (view->offset + view->height <= view->lineno)
5673 view->offset = view->lineno - view->height + 1;
5675 view->p_restore = FALSE;
5676 }
5678 static void
5679 status_update_onbranch(void)
5680 {
5681 static const char *paths[][2] = {
5682 { "rebase-apply/rebasing", "Rebasing" },
5683 { "rebase-apply/applying", "Applying mailbox" },
5684 { "rebase-apply/", "Rebasing mailbox" },
5685 { "rebase-merge/interactive", "Interactive rebase" },
5686 { "rebase-merge/", "Rebase merge" },
5687 { "MERGE_HEAD", "Merging" },
5688 { "BISECT_LOG", "Bisecting" },
5689 { "HEAD", "On branch" },
5690 };
5691 char buf[SIZEOF_STR];
5692 struct stat stat;
5693 int i;
5695 if (is_initial_commit()) {
5696 string_copy(status_onbranch, "Initial commit");
5697 return;
5698 }
5700 for (i = 0; i < ARRAY_SIZE(paths); i++) {
5701 char *head = opt_head;
5703 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
5704 lstat(buf, &stat) < 0)
5705 continue;
5707 if (!*opt_head) {
5708 struct io io = {};
5710 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
5711 io_read_buf(&io, buf, sizeof(buf))) {
5712 head = buf;
5713 if (!prefixcmp(head, "refs/heads/"))
5714 head += STRING_SIZE("refs/heads/");
5715 }
5716 }
5718 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
5719 string_copy(status_onbranch, opt_head);
5720 return;
5721 }
5723 string_copy(status_onbranch, "Not currently on any branch");
5724 }
5726 /* First parse staged info using git-diff-index(1), then parse unstaged
5727 * info using git-diff-files(1), and finally untracked files using
5728 * git-ls-files(1). */
5729 static bool
5730 status_open(struct view *view)
5731 {
5732 reset_view(view);
5734 add_line_data(view, NULL, LINE_STAT_HEAD);
5735 status_update_onbranch();
5737 io_run_bg(update_index_argv);
5739 if (is_initial_commit()) {
5740 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5741 return FALSE;
5742 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5743 return FALSE;
5744 }
5746 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5747 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5748 return FALSE;
5750 /* Restore the exact position or use the specialized restore
5751 * mode? */
5752 if (!view->p_restore)
5753 status_restore(view);
5754 return TRUE;
5755 }
5757 static bool
5758 status_draw(struct view *view, struct line *line, unsigned int lineno)
5759 {
5760 struct status *status = line->data;
5761 enum line_type type;
5762 const char *text;
5764 if (!status) {
5765 switch (line->type) {
5766 case LINE_STAT_STAGED:
5767 type = LINE_STAT_SECTION;
5768 text = "Changes to be committed:";
5769 break;
5771 case LINE_STAT_UNSTAGED:
5772 type = LINE_STAT_SECTION;
5773 text = "Changed but not updated:";
5774 break;
5776 case LINE_STAT_UNTRACKED:
5777 type = LINE_STAT_SECTION;
5778 text = "Untracked files:";
5779 break;
5781 case LINE_STAT_NONE:
5782 type = LINE_DEFAULT;
5783 text = " (no files)";
5784 break;
5786 case LINE_STAT_HEAD:
5787 type = LINE_STAT_HEAD;
5788 text = status_onbranch;
5789 break;
5791 default:
5792 return FALSE;
5793 }
5794 } else {
5795 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5797 buf[0] = status->status;
5798 if (draw_text(view, line->type, buf, TRUE))
5799 return TRUE;
5800 type = LINE_DEFAULT;
5801 text = status->new.name;
5802 }
5804 draw_text(view, type, text, TRUE);
5805 return TRUE;
5806 }
5808 static enum request
5809 status_load_error(struct view *view, struct view *stage, const char *path)
5810 {
5811 if (displayed_views() == 2 || display[current_view] != view)
5812 maximize_view(view);
5813 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5814 return REQ_NONE;
5815 }
5817 static enum request
5818 status_enter(struct view *view, struct line *line)
5819 {
5820 struct status *status = line->data;
5821 const char *oldpath = status ? status->old.name : NULL;
5822 /* Diffs for unmerged entries are empty when passing the new
5823 * path, so leave it empty. */
5824 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5825 const char *info;
5826 enum open_flags split;
5827 struct view *stage = VIEW(REQ_VIEW_STAGE);
5829 if (line->type == LINE_STAT_NONE ||
5830 (!status && line[1].type == LINE_STAT_NONE)) {
5831 report("No file to diff");
5832 return REQ_NONE;
5833 }
5835 switch (line->type) {
5836 case LINE_STAT_STAGED:
5837 if (is_initial_commit()) {
5838 const char *no_head_diff_argv[] = {
5839 "git", "diff", "--no-color", "--patch-with-stat",
5840 "--", "/dev/null", newpath, NULL
5841 };
5843 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5844 return status_load_error(view, stage, newpath);
5845 } else {
5846 const char *index_show_argv[] = {
5847 "git", "diff-index", "--root", "--patch-with-stat",
5848 "-C", "-M", "--cached", "HEAD", "--",
5849 oldpath, newpath, NULL
5850 };
5852 if (!prepare_update(stage, index_show_argv, opt_cdup))
5853 return status_load_error(view, stage, newpath);
5854 }
5856 if (status)
5857 info = "Staged changes to %s";
5858 else
5859 info = "Staged changes";
5860 break;
5862 case LINE_STAT_UNSTAGED:
5863 {
5864 const char *files_show_argv[] = {
5865 "git", "diff-files", "--root", "--patch-with-stat",
5866 "-C", "-M", "--", oldpath, newpath, NULL
5867 };
5869 if (!prepare_update(stage, files_show_argv, opt_cdup))
5870 return status_load_error(view, stage, newpath);
5871 if (status)
5872 info = "Unstaged changes to %s";
5873 else
5874 info = "Unstaged changes";
5875 break;
5876 }
5877 case LINE_STAT_UNTRACKED:
5878 if (!newpath) {
5879 report("No file to show");
5880 return REQ_NONE;
5881 }
5883 if (!suffixcmp(status->new.name, -1, "/")) {
5884 report("Cannot display a directory");
5885 return REQ_NONE;
5886 }
5888 if (!prepare_update_file(stage, newpath))
5889 return status_load_error(view, stage, newpath);
5890 info = "Untracked file %s";
5891 break;
5893 case LINE_STAT_HEAD:
5894 return REQ_NONE;
5896 default:
5897 die("line type %d not handled in switch", line->type);
5898 }
5900 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5901 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5902 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5903 if (status) {
5904 stage_status = *status;
5905 } else {
5906 memset(&stage_status, 0, sizeof(stage_status));
5907 }
5909 stage_line_type = line->type;
5910 stage_chunks = 0;
5911 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5912 }
5914 return REQ_NONE;
5915 }
5917 static bool
5918 status_exists(struct status *status, enum line_type type)
5919 {
5920 struct view *view = VIEW(REQ_VIEW_STATUS);
5921 unsigned long lineno;
5923 for (lineno = 0; lineno < view->lines; lineno++) {
5924 struct line *line = &view->line[lineno];
5925 struct status *pos = line->data;
5927 if (line->type != type)
5928 continue;
5929 if (!pos && (!status || !status->status) && line[1].data) {
5930 select_view_line(view, lineno);
5931 return TRUE;
5932 }
5933 if (pos && !strcmp(status->new.name, pos->new.name)) {
5934 select_view_line(view, lineno);
5935 return TRUE;
5936 }
5937 }
5939 return FALSE;
5940 }
5943 static bool
5944 status_update_prepare(struct io *io, enum line_type type)
5945 {
5946 const char *staged_argv[] = {
5947 "git", "update-index", "-z", "--index-info", NULL
5948 };
5949 const char *others_argv[] = {
5950 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5951 };
5953 switch (type) {
5954 case LINE_STAT_STAGED:
5955 return io_run(io, staged_argv, opt_cdup, IO_WR);
5957 case LINE_STAT_UNSTAGED:
5958 case LINE_STAT_UNTRACKED:
5959 return io_run(io, others_argv, opt_cdup, IO_WR);
5961 default:
5962 die("line type %d not handled in switch", type);
5963 return FALSE;
5964 }
5965 }
5967 static bool
5968 status_update_write(struct io *io, struct status *status, enum line_type type)
5969 {
5970 char buf[SIZEOF_STR];
5971 size_t bufsize = 0;
5973 switch (type) {
5974 case LINE_STAT_STAGED:
5975 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5976 status->old.mode,
5977 status->old.rev,
5978 status->old.name, 0))
5979 return FALSE;
5980 break;
5982 case LINE_STAT_UNSTAGED:
5983 case LINE_STAT_UNTRACKED:
5984 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5985 return FALSE;
5986 break;
5988 default:
5989 die("line type %d not handled in switch", type);
5990 }
5992 return io_write(io, buf, bufsize);
5993 }
5995 static bool
5996 status_update_file(struct status *status, enum line_type type)
5997 {
5998 struct io io = {};
5999 bool result;
6001 if (!status_update_prepare(&io, type))
6002 return FALSE;
6004 result = status_update_write(&io, status, type);
6005 return io_done(&io) && result;
6006 }
6008 static bool
6009 status_update_files(struct view *view, struct line *line)
6010 {
6011 char buf[sizeof(view->ref)];
6012 struct io io = {};
6013 bool result = TRUE;
6014 struct line *pos = view->line + view->lines;
6015 int files = 0;
6016 int file, done;
6017 int cursor_y = -1, cursor_x = -1;
6019 if (!status_update_prepare(&io, line->type))
6020 return FALSE;
6022 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
6023 files++;
6025 string_copy(buf, view->ref);
6026 getsyx(cursor_y, cursor_x);
6027 for (file = 0, done = 5; result && file < files; line++, file++) {
6028 int almost_done = file * 100 / files;
6030 if (almost_done > done) {
6031 done = almost_done;
6032 string_format(view->ref, "updating file %u of %u (%d%% done)",
6033 file, files, done);
6034 update_view_title(view);
6035 setsyx(cursor_y, cursor_x);
6036 doupdate();
6037 }
6038 result = status_update_write(&io, line->data, line->type);
6039 }
6040 string_copy(view->ref, buf);
6042 return io_done(&io) && result;
6043 }
6045 static bool
6046 status_update(struct view *view)
6047 {
6048 struct line *line = &view->line[view->lineno];
6050 assert(view->lines);
6052 if (!line->data) {
6053 /* This should work even for the "On branch" line. */
6054 if (line < view->line + view->lines && !line[1].data) {
6055 report("Nothing to update");
6056 return FALSE;
6057 }
6059 if (!status_update_files(view, line + 1)) {
6060 report("Failed to update file status");
6061 return FALSE;
6062 }
6064 } else if (!status_update_file(line->data, line->type)) {
6065 report("Failed to update file status");
6066 return FALSE;
6067 }
6069 return TRUE;
6070 }
6072 static bool
6073 status_revert(struct status *status, enum line_type type, bool has_none)
6074 {
6075 if (!status || type != LINE_STAT_UNSTAGED) {
6076 if (type == LINE_STAT_STAGED) {
6077 report("Cannot revert changes to staged files");
6078 } else if (type == LINE_STAT_UNTRACKED) {
6079 report("Cannot revert changes to untracked files");
6080 } else if (has_none) {
6081 report("Nothing to revert");
6082 } else {
6083 report("Cannot revert changes to multiple files");
6084 }
6086 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
6087 char mode[10] = "100644";
6088 const char *reset_argv[] = {
6089 "git", "update-index", "--cacheinfo", mode,
6090 status->old.rev, status->old.name, NULL
6091 };
6092 const char *checkout_argv[] = {
6093 "git", "checkout", "--", status->old.name, NULL
6094 };
6096 if (status->status == 'U') {
6097 string_format(mode, "%5o", status->old.mode);
6099 if (status->old.mode == 0 && status->new.mode == 0) {
6100 reset_argv[2] = "--force-remove";
6101 reset_argv[3] = status->old.name;
6102 reset_argv[4] = NULL;
6103 }
6105 if (!io_run_fg(reset_argv, opt_cdup))
6106 return FALSE;
6107 if (status->old.mode == 0 && status->new.mode == 0)
6108 return TRUE;
6109 }
6111 return io_run_fg(checkout_argv, opt_cdup);
6112 }
6114 return FALSE;
6115 }
6117 static enum request
6118 status_request(struct view *view, enum request request, struct line *line)
6119 {
6120 struct status *status = line->data;
6122 switch (request) {
6123 case REQ_STATUS_UPDATE:
6124 if (!status_update(view))
6125 return REQ_NONE;
6126 break;
6128 case REQ_STATUS_REVERT:
6129 if (!status_revert(status, line->type, status_has_none(view, line)))
6130 return REQ_NONE;
6131 break;
6133 case REQ_STATUS_MERGE:
6134 if (!status || status->status != 'U') {
6135 report("Merging only possible for files with unmerged status ('U').");
6136 return REQ_NONE;
6137 }
6138 open_mergetool(status->new.name);
6139 break;
6141 case REQ_EDIT:
6142 if (!status)
6143 return request;
6144 if (status->status == 'D') {
6145 report("File has been deleted.");
6146 return REQ_NONE;
6147 }
6149 open_editor(status->new.name);
6150 break;
6152 case REQ_VIEW_BLAME:
6153 if (status)
6154 opt_ref[0] = 0;
6155 return request;
6157 case REQ_ENTER:
6158 /* After returning the status view has been split to
6159 * show the stage view. No further reloading is
6160 * necessary. */
6161 return status_enter(view, line);
6163 case REQ_REFRESH:
6164 /* Simply reload the view. */
6165 break;
6167 default:
6168 return request;
6169 }
6171 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
6173 return REQ_NONE;
6174 }
6176 static void
6177 status_select(struct view *view, struct line *line)
6178 {
6179 struct status *status = line->data;
6180 char file[SIZEOF_STR] = "all files";
6181 const char *text;
6182 const char *key;
6184 if (status && !string_format(file, "'%s'", status->new.name))
6185 return;
6187 if (!status && line[1].type == LINE_STAT_NONE)
6188 line++;
6190 switch (line->type) {
6191 case LINE_STAT_STAGED:
6192 text = "Press %s to unstage %s for commit";
6193 break;
6195 case LINE_STAT_UNSTAGED:
6196 text = "Press %s to stage %s for commit";
6197 break;
6199 case LINE_STAT_UNTRACKED:
6200 text = "Press %s to stage %s for addition";
6201 break;
6203 case LINE_STAT_HEAD:
6204 case LINE_STAT_NONE:
6205 text = "Nothing to update";
6206 break;
6208 default:
6209 die("line type %d not handled in switch", line->type);
6210 }
6212 if (status && status->status == 'U') {
6213 text = "Press %s to resolve conflict in %s";
6214 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
6216 } else {
6217 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
6218 }
6220 string_format(view->ref, text, key, file);
6221 if (status)
6222 string_copy(opt_file, status->new.name);
6223 }
6225 static bool
6226 status_grep(struct view *view, struct line *line)
6227 {
6228 struct status *status = line->data;
6230 if (status) {
6231 const char buf[2] = { status->status, 0 };
6232 const char *text[] = { status->new.name, buf, NULL };
6234 return grep_text(view, text);
6235 }
6237 return FALSE;
6238 }
6240 static struct view_ops status_ops = {
6241 "file",
6242 NULL,
6243 status_open,
6244 NULL,
6245 status_draw,
6246 status_request,
6247 status_grep,
6248 status_select,
6249 };
6252 static bool
6253 stage_diff_write(struct io *io, struct line *line, struct line *end)
6254 {
6255 while (line < end) {
6256 if (!io_write(io, line->data, strlen(line->data)) ||
6257 !io_write(io, "\n", 1))
6258 return FALSE;
6259 line++;
6260 if (line->type == LINE_DIFF_CHUNK ||
6261 line->type == LINE_DIFF_HEADER)
6262 break;
6263 }
6265 return TRUE;
6266 }
6268 static struct line *
6269 stage_diff_find(struct view *view, struct line *line, enum line_type type)
6270 {
6271 for (; view->line < line; line--)
6272 if (line->type == type)
6273 return line;
6275 return NULL;
6276 }
6278 static bool
6279 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
6280 {
6281 const char *apply_argv[SIZEOF_ARG] = {
6282 "git", "apply", "--whitespace=nowarn", NULL
6283 };
6284 struct line *diff_hdr;
6285 struct io io = {};
6286 int argc = 3;
6288 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
6289 if (!diff_hdr)
6290 return FALSE;
6292 if (!revert)
6293 apply_argv[argc++] = "--cached";
6294 if (revert || stage_line_type == LINE_STAT_STAGED)
6295 apply_argv[argc++] = "-R";
6296 apply_argv[argc++] = "-";
6297 apply_argv[argc++] = NULL;
6298 if (!io_run(&io, apply_argv, opt_cdup, IO_WR))
6299 return FALSE;
6301 if (!stage_diff_write(&io, diff_hdr, chunk) ||
6302 !stage_diff_write(&io, chunk, view->line + view->lines))
6303 chunk = NULL;
6305 io_done(&io);
6306 io_run_bg(update_index_argv);
6308 return chunk ? TRUE : FALSE;
6309 }
6311 static bool
6312 stage_update(struct view *view, struct line *line)
6313 {
6314 struct line *chunk = NULL;
6316 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
6317 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
6319 if (chunk) {
6320 if (!stage_apply_chunk(view, chunk, FALSE)) {
6321 report("Failed to apply chunk");
6322 return FALSE;
6323 }
6325 } else if (!stage_status.status) {
6326 view = VIEW(REQ_VIEW_STATUS);
6328 for (line = view->line; line < view->line + view->lines; line++)
6329 if (line->type == stage_line_type)
6330 break;
6332 if (!status_update_files(view, line + 1)) {
6333 report("Failed to update files");
6334 return FALSE;
6335 }
6337 } else if (!status_update_file(&stage_status, stage_line_type)) {
6338 report("Failed to update file");
6339 return FALSE;
6340 }
6342 return TRUE;
6343 }
6345 static bool
6346 stage_revert(struct view *view, struct line *line)
6347 {
6348 struct line *chunk = NULL;
6350 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
6351 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
6353 if (chunk) {
6354 if (!prompt_yesno("Are you sure you want to revert changes?"))
6355 return FALSE;
6357 if (!stage_apply_chunk(view, chunk, TRUE)) {
6358 report("Failed to revert chunk");
6359 return FALSE;
6360 }
6361 return TRUE;
6363 } else {
6364 return status_revert(stage_status.status ? &stage_status : NULL,
6365 stage_line_type, FALSE);
6366 }
6367 }
6370 static void
6371 stage_next(struct view *view, struct line *line)
6372 {
6373 int i;
6375 if (!stage_chunks) {
6376 for (line = view->line; line < view->line + view->lines; line++) {
6377 if (line->type != LINE_DIFF_CHUNK)
6378 continue;
6380 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
6381 report("Allocation failure");
6382 return;
6383 }
6385 stage_chunk[stage_chunks++] = line - view->line;
6386 }
6387 }
6389 for (i = 0; i < stage_chunks; i++) {
6390 if (stage_chunk[i] > view->lineno) {
6391 do_scroll_view(view, stage_chunk[i] - view->lineno);
6392 report("Chunk %d of %d", i + 1, stage_chunks);
6393 return;
6394 }
6395 }
6397 report("No next chunk found");
6398 }
6400 static enum request
6401 stage_request(struct view *view, enum request request, struct line *line)
6402 {
6403 switch (request) {
6404 case REQ_STATUS_UPDATE:
6405 if (!stage_update(view, line))
6406 return REQ_NONE;
6407 break;
6409 case REQ_STATUS_REVERT:
6410 if (!stage_revert(view, line))
6411 return REQ_NONE;
6412 break;
6414 case REQ_STAGE_NEXT:
6415 if (stage_line_type == LINE_STAT_UNTRACKED) {
6416 report("File is untracked; press %s to add",
6417 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
6418 return REQ_NONE;
6419 }
6420 stage_next(view, line);
6421 return REQ_NONE;
6423 case REQ_EDIT:
6424 if (!stage_status.new.name[0])
6425 return request;
6426 if (stage_status.status == 'D') {
6427 report("File has been deleted.");
6428 return REQ_NONE;
6429 }
6431 open_editor(stage_status.new.name);
6432 break;
6434 case REQ_REFRESH:
6435 /* Reload everything ... */
6436 break;
6438 case REQ_VIEW_BLAME:
6439 if (stage_status.new.name[0]) {
6440 string_copy(opt_file, stage_status.new.name);
6441 opt_ref[0] = 0;
6442 }
6443 return request;
6445 case REQ_ENTER:
6446 return pager_request(view, request, line);
6448 default:
6449 return request;
6450 }
6452 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
6453 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
6455 /* Check whether the staged entry still exists, and close the
6456 * stage view if it doesn't. */
6457 if (!status_exists(&stage_status, stage_line_type)) {
6458 status_restore(VIEW(REQ_VIEW_STATUS));
6459 return REQ_VIEW_CLOSE;
6460 }
6462 if (stage_line_type == LINE_STAT_UNTRACKED) {
6463 if (!suffixcmp(stage_status.new.name, -1, "/")) {
6464 report("Cannot display a directory");
6465 return REQ_NONE;
6466 }
6468 if (!prepare_update_file(view, stage_status.new.name)) {
6469 report("Failed to open file: %s", strerror(errno));
6470 return REQ_NONE;
6471 }
6472 }
6473 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
6475 return REQ_NONE;
6476 }
6478 static struct view_ops stage_ops = {
6479 "line",
6480 NULL,
6481 NULL,
6482 pager_read,
6483 pager_draw,
6484 stage_request,
6485 pager_grep,
6486 pager_select,
6487 };
6490 /*
6491 * Revision graph
6492 */
6494 struct commit {
6495 char id[SIZEOF_REV]; /* SHA1 ID. */
6496 char title[128]; /* First line of the commit message. */
6497 const char *author; /* Author of the commit. */
6498 struct time time; /* Date from the author ident. */
6499 struct ref_list *refs; /* Repository references. */
6500 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
6501 size_t graph_size; /* The width of the graph array. */
6502 bool has_parents; /* Rewritten --parents seen. */
6503 };
6505 /* Size of rev graph with no "padding" columns */
6506 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
6508 struct rev_graph {
6509 struct rev_graph *prev, *next, *parents;
6510 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
6511 size_t size;
6512 struct commit *commit;
6513 size_t pos;
6514 unsigned int boundary:1;
6515 };
6517 /* Parents of the commit being visualized. */
6518 static struct rev_graph graph_parents[4];
6520 /* The current stack of revisions on the graph. */
6521 static struct rev_graph graph_stacks[4] = {
6522 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
6523 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
6524 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
6525 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
6526 };
6528 static inline bool
6529 graph_parent_is_merge(struct rev_graph *graph)
6530 {
6531 return graph->parents->size > 1;
6532 }
6534 static inline void
6535 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
6536 {
6537 struct commit *commit = graph->commit;
6539 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
6540 commit->graph[commit->graph_size++] = symbol;
6541 }
6543 static void
6544 clear_rev_graph(struct rev_graph *graph)
6545 {
6546 graph->boundary = 0;
6547 graph->size = graph->pos = 0;
6548 graph->commit = NULL;
6549 memset(graph->parents, 0, sizeof(*graph->parents));
6550 }
6552 static void
6553 done_rev_graph(struct rev_graph *graph)
6554 {
6555 if (graph_parent_is_merge(graph) &&
6556 graph->pos < graph->size - 1 &&
6557 graph->next->size == graph->size + graph->parents->size - 1) {
6558 size_t i = graph->pos + graph->parents->size - 1;
6560 graph->commit->graph_size = i * 2;
6561 while (i < graph->next->size - 1) {
6562 append_to_rev_graph(graph, ' ');
6563 append_to_rev_graph(graph, '\\');
6564 i++;
6565 }
6566 }
6568 clear_rev_graph(graph);
6569 }
6571 static void
6572 push_rev_graph(struct rev_graph *graph, const char *parent)
6573 {
6574 int i;
6576 /* "Collapse" duplicate parents lines.
6577 *
6578 * FIXME: This needs to also update update the drawn graph but
6579 * for now it just serves as a method for pruning graph lines. */
6580 for (i = 0; i < graph->size; i++)
6581 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
6582 return;
6584 if (graph->size < SIZEOF_REVITEMS) {
6585 string_copy_rev(graph->rev[graph->size++], parent);
6586 }
6587 }
6589 static chtype
6590 get_rev_graph_symbol(struct rev_graph *graph)
6591 {
6592 chtype symbol;
6594 if (graph->boundary)
6595 symbol = REVGRAPH_BOUND;
6596 else if (graph->parents->size == 0)
6597 symbol = REVGRAPH_INIT;
6598 else if (graph_parent_is_merge(graph))
6599 symbol = REVGRAPH_MERGE;
6600 else if (graph->pos >= graph->size)
6601 symbol = REVGRAPH_BRANCH;
6602 else
6603 symbol = REVGRAPH_COMMIT;
6605 return symbol;
6606 }
6608 static void
6609 draw_rev_graph(struct rev_graph *graph)
6610 {
6611 struct rev_filler {
6612 chtype separator, line;
6613 };
6614 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
6615 static struct rev_filler fillers[] = {
6616 { ' ', '|' },
6617 { '`', '.' },
6618 { '\'', ' ' },
6619 { '/', ' ' },
6620 };
6621 chtype symbol = get_rev_graph_symbol(graph);
6622 struct rev_filler *filler;
6623 size_t i;
6625 fillers[DEFAULT].line = opt_line_graphics ? ACS_VLINE : '|';
6626 filler = &fillers[DEFAULT];
6628 for (i = 0; i < graph->pos; i++) {
6629 append_to_rev_graph(graph, filler->line);
6630 if (graph_parent_is_merge(graph->prev) &&
6631 graph->prev->pos == i)
6632 filler = &fillers[RSHARP];
6634 append_to_rev_graph(graph, filler->separator);
6635 }
6637 /* Place the symbol for this revision. */
6638 append_to_rev_graph(graph, symbol);
6640 if (graph->prev->size > graph->size)
6641 filler = &fillers[RDIAG];
6642 else
6643 filler = &fillers[DEFAULT];
6645 i++;
6647 for (; i < graph->size; i++) {
6648 append_to_rev_graph(graph, filler->separator);
6649 append_to_rev_graph(graph, filler->line);
6650 if (graph_parent_is_merge(graph->prev) &&
6651 i < graph->prev->pos + graph->parents->size)
6652 filler = &fillers[RSHARP];
6653 if (graph->prev->size > graph->size)
6654 filler = &fillers[LDIAG];
6655 }
6657 if (graph->prev->size > graph->size) {
6658 append_to_rev_graph(graph, filler->separator);
6659 if (filler->line != ' ')
6660 append_to_rev_graph(graph, filler->line);
6661 }
6662 }
6664 /* Prepare the next rev graph */
6665 static void
6666 prepare_rev_graph(struct rev_graph *graph)
6667 {
6668 size_t i;
6670 /* First, traverse all lines of revisions up to the active one. */
6671 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
6672 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
6673 break;
6675 push_rev_graph(graph->next, graph->rev[graph->pos]);
6676 }
6678 /* Interleave the new revision parent(s). */
6679 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
6680 push_rev_graph(graph->next, graph->parents->rev[i]);
6682 /* Lastly, put any remaining revisions. */
6683 for (i = graph->pos + 1; i < graph->size; i++)
6684 push_rev_graph(graph->next, graph->rev[i]);
6685 }
6687 static void
6688 update_rev_graph(struct view *view, struct rev_graph *graph)
6689 {
6690 /* If this is the finalizing update ... */
6691 if (graph->commit)
6692 prepare_rev_graph(graph);
6694 /* Graph visualization needs a one rev look-ahead,
6695 * so the first update doesn't visualize anything. */
6696 if (!graph->prev->commit)
6697 return;
6699 if (view->lines > 2)
6700 view->line[view->lines - 3].dirty = 1;
6701 if (view->lines > 1)
6702 view->line[view->lines - 2].dirty = 1;
6703 draw_rev_graph(graph->prev);
6704 done_rev_graph(graph->prev->prev);
6705 }
6708 /*
6709 * Main view backend
6710 */
6712 static const char *main_argv[SIZEOF_ARG] = {
6713 "git", "log", "--no-color", "--pretty=raw", "--parents",
6714 "--topo-order", "%(head)", NULL
6715 };
6717 static bool
6718 main_draw(struct view *view, struct line *line, unsigned int lineno)
6719 {
6720 struct commit *commit = line->data;
6722 if (!commit->author)
6723 return FALSE;
6725 if (opt_date && draw_date(view, &commit->time))
6726 return TRUE;
6728 if (opt_author && draw_author(view, commit->author))
6729 return TRUE;
6731 if (opt_rev_graph && commit->graph_size &&
6732 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
6733 return TRUE;
6735 if (opt_show_refs && commit->refs) {
6736 size_t i;
6738 for (i = 0; i < commit->refs->size; i++) {
6739 struct ref *ref = commit->refs->refs[i];
6740 enum line_type type;
6742 if (ref->head)
6743 type = LINE_MAIN_HEAD;
6744 else if (ref->ltag)
6745 type = LINE_MAIN_LOCAL_TAG;
6746 else if (ref->tag)
6747 type = LINE_MAIN_TAG;
6748 else if (ref->tracked)
6749 type = LINE_MAIN_TRACKED;
6750 else if (ref->remote)
6751 type = LINE_MAIN_REMOTE;
6752 else
6753 type = LINE_MAIN_REF;
6755 if (draw_text(view, type, "[", TRUE) ||
6756 draw_text(view, type, ref->name, TRUE) ||
6757 draw_text(view, type, "]", TRUE))
6758 return TRUE;
6760 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
6761 return TRUE;
6762 }
6763 }
6765 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
6766 return TRUE;
6767 }
6769 /* Reads git log --pretty=raw output and parses it into the commit struct. */
6770 static bool
6771 main_read(struct view *view, char *line)
6772 {
6773 static struct rev_graph *graph = graph_stacks;
6774 enum line_type type;
6775 struct commit *commit;
6777 if (!line) {
6778 int i;
6780 if (!view->lines && !view->prev)
6781 die("No revisions match the given arguments.");
6782 if (view->lines > 0) {
6783 commit = view->line[view->lines - 1].data;
6784 view->line[view->lines - 1].dirty = 1;
6785 if (!commit->author) {
6786 view->lines--;
6787 free(commit);
6788 graph->commit = NULL;
6789 }
6790 }
6791 update_rev_graph(view, graph);
6793 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
6794 clear_rev_graph(&graph_stacks[i]);
6795 return TRUE;
6796 }
6798 type = get_line_type(line);
6799 if (type == LINE_COMMIT) {
6800 commit = calloc(1, sizeof(struct commit));
6801 if (!commit)
6802 return FALSE;
6804 line += STRING_SIZE("commit ");
6805 if (*line == '-') {
6806 graph->boundary = 1;
6807 line++;
6808 }
6810 string_copy_rev(commit->id, line);
6811 commit->refs = get_ref_list(commit->id);
6812 graph->commit = commit;
6813 add_line_data(view, commit, LINE_MAIN_COMMIT);
6815 while ((line = strchr(line, ' '))) {
6816 line++;
6817 push_rev_graph(graph->parents, line);
6818 commit->has_parents = TRUE;
6819 }
6820 return TRUE;
6821 }
6823 if (!view->lines)
6824 return TRUE;
6825 commit = view->line[view->lines - 1].data;
6827 switch (type) {
6828 case LINE_PARENT:
6829 if (commit->has_parents)
6830 break;
6831 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
6832 break;
6834 case LINE_AUTHOR:
6835 parse_author_line(line + STRING_SIZE("author "),
6836 &commit->author, &commit->time);
6837 update_rev_graph(view, graph);
6838 graph = graph->next;
6839 break;
6841 default:
6842 /* Fill in the commit title if it has not already been set. */
6843 if (commit->title[0])
6844 break;
6846 /* Require titles to start with a non-space character at the
6847 * offset used by git log. */
6848 if (strncmp(line, " ", 4))
6849 break;
6850 line += 4;
6851 /* Well, if the title starts with a whitespace character,
6852 * try to be forgiving. Otherwise we end up with no title. */
6853 while (isspace(*line))
6854 line++;
6855 if (*line == '\0')
6856 break;
6857 /* FIXME: More graceful handling of titles; append "..." to
6858 * shortened titles, etc. */
6860 string_expand(commit->title, sizeof(commit->title), line, 1);
6861 view->line[view->lines - 1].dirty = 1;
6862 }
6864 return TRUE;
6865 }
6867 static enum request
6868 main_request(struct view *view, enum request request, struct line *line)
6869 {
6870 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
6872 switch (request) {
6873 case REQ_ENTER:
6874 open_view(view, REQ_VIEW_DIFF, flags);
6875 break;
6876 case REQ_REFRESH:
6877 load_refs();
6878 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6879 break;
6880 default:
6881 return request;
6882 }
6884 return REQ_NONE;
6885 }
6887 static bool
6888 grep_refs(struct ref_list *list, regex_t *regex)
6889 {
6890 regmatch_t pmatch;
6891 size_t i;
6893 if (!opt_show_refs || !list)
6894 return FALSE;
6896 for (i = 0; i < list->size; i++) {
6897 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6898 return TRUE;
6899 }
6901 return FALSE;
6902 }
6904 static bool
6905 main_grep(struct view *view, struct line *line)
6906 {
6907 struct commit *commit = line->data;
6908 const char *text[] = {
6909 commit->title,
6910 opt_author ? commit->author : "",
6911 mkdate(&commit->time, opt_date),
6912 NULL
6913 };
6915 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6916 }
6918 static void
6919 main_select(struct view *view, struct line *line)
6920 {
6921 struct commit *commit = line->data;
6923 string_copy_rev(view->ref, commit->id);
6924 string_copy_rev(ref_commit, view->ref);
6925 }
6927 static struct view_ops main_ops = {
6928 "commit",
6929 main_argv,
6930 NULL,
6931 main_read,
6932 main_draw,
6933 main_request,
6934 main_grep,
6935 main_select,
6936 };
6939 /*
6940 * Status management
6941 */
6943 /* Whether or not the curses interface has been initialized. */
6944 static bool cursed = FALSE;
6946 /* Terminal hacks and workarounds. */
6947 static bool use_scroll_redrawwin;
6948 static bool use_scroll_status_wclear;
6950 /* The status window is used for polling keystrokes. */
6951 static WINDOW *status_win;
6953 /* Reading from the prompt? */
6954 static bool input_mode = FALSE;
6956 static bool status_empty = FALSE;
6958 /* Update status and title window. */
6959 static void
6960 report(const char *msg, ...)
6961 {
6962 struct view *view = display[current_view];
6964 if (input_mode)
6965 return;
6967 if (!view) {
6968 char buf[SIZEOF_STR];
6969 va_list args;
6971 va_start(args, msg);
6972 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6973 buf[sizeof(buf) - 1] = 0;
6974 buf[sizeof(buf) - 2] = '.';
6975 buf[sizeof(buf) - 3] = '.';
6976 buf[sizeof(buf) - 4] = '.';
6977 }
6978 va_end(args);
6979 die("%s", buf);
6980 }
6982 if (!status_empty || *msg) {
6983 va_list args;
6985 va_start(args, msg);
6987 wmove(status_win, 0, 0);
6988 if (view->has_scrolled && use_scroll_status_wclear)
6989 wclear(status_win);
6990 if (*msg) {
6991 vwprintw(status_win, msg, args);
6992 status_empty = FALSE;
6993 } else {
6994 status_empty = TRUE;
6995 }
6996 wclrtoeol(status_win);
6997 wnoutrefresh(status_win);
6999 va_end(args);
7000 }
7002 update_view_title(view);
7003 }
7005 static void
7006 init_display(void)
7007 {
7008 const char *term;
7009 int x, y;
7011 /* Initialize the curses library */
7012 if (isatty(STDIN_FILENO)) {
7013 cursed = !!initscr();
7014 opt_tty = stdin;
7015 } else {
7016 /* Leave stdin and stdout alone when acting as a pager. */
7017 opt_tty = fopen("/dev/tty", "r+");
7018 if (!opt_tty)
7019 die("Failed to open /dev/tty");
7020 cursed = !!newterm(NULL, opt_tty, opt_tty);
7021 }
7023 if (!cursed)
7024 die("Failed to initialize curses");
7026 nonl(); /* Disable conversion and detect newlines from input. */
7027 cbreak(); /* Take input chars one at a time, no wait for \n */
7028 noecho(); /* Don't echo input */
7029 leaveok(stdscr, FALSE);
7031 if (has_colors())
7032 init_colors();
7034 getmaxyx(stdscr, y, x);
7035 status_win = newwin(1, 0, y - 1, 0);
7036 if (!status_win)
7037 die("Failed to create status window");
7039 /* Enable keyboard mapping */
7040 keypad(status_win, TRUE);
7041 wbkgdset(status_win, get_line_attr(LINE_STATUS));
7043 TABSIZE = opt_tab_size;
7045 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
7046 if (term && !strcmp(term, "gnome-terminal")) {
7047 /* In the gnome-terminal-emulator, the message from
7048 * scrolling up one line when impossible followed by
7049 * scrolling down one line causes corruption of the
7050 * status line. This is fixed by calling wclear. */
7051 use_scroll_status_wclear = TRUE;
7052 use_scroll_redrawwin = FALSE;
7054 } else if (term && !strcmp(term, "xrvt-xpm")) {
7055 /* No problems with full optimizations in xrvt-(unicode)
7056 * and aterm. */
7057 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
7059 } else {
7060 /* When scrolling in (u)xterm the last line in the
7061 * scrolling direction will update slowly. */
7062 use_scroll_redrawwin = TRUE;
7063 use_scroll_status_wclear = FALSE;
7064 }
7065 }
7067 static int
7068 get_input(int prompt_position)
7069 {
7070 struct view *view;
7071 int i, key, cursor_y, cursor_x;
7072 bool loading = FALSE;
7074 if (prompt_position)
7075 input_mode = TRUE;
7077 while (TRUE) {
7078 foreach_view (view, i) {
7079 update_view(view);
7080 if (view_is_displayed(view) && view->has_scrolled &&
7081 use_scroll_redrawwin)
7082 redrawwin(view->win);
7083 view->has_scrolled = FALSE;
7084 if (view->pipe)
7085 loading = TRUE;
7086 }
7088 /* Update the cursor position. */
7089 if (prompt_position) {
7090 getbegyx(status_win, cursor_y, cursor_x);
7091 cursor_x = prompt_position;
7092 } else {
7093 view = display[current_view];
7094 getbegyx(view->win, cursor_y, cursor_x);
7095 cursor_x = view->width - 1;
7096 cursor_y += view->lineno - view->offset;
7097 }
7098 setsyx(cursor_y, cursor_x);
7100 /* Refresh, accept single keystroke of input */
7101 doupdate();
7102 nodelay(status_win, loading);
7103 key = wgetch(status_win);
7105 /* wgetch() with nodelay() enabled returns ERR when
7106 * there's no input. */
7107 if (key == ERR) {
7109 } else if (key == KEY_RESIZE) {
7110 int height, width;
7112 getmaxyx(stdscr, height, width);
7114 wresize(status_win, 1, width);
7115 mvwin(status_win, height - 1, 0);
7116 wnoutrefresh(status_win);
7117 resize_display();
7118 redraw_display(TRUE);
7120 } else {
7121 input_mode = FALSE;
7122 return key;
7123 }
7124 }
7125 }
7127 static char *
7128 prompt_input(const char *prompt, input_handler handler, void *data)
7129 {
7130 enum input_status status = INPUT_OK;
7131 static char buf[SIZEOF_STR];
7132 size_t pos = 0;
7134 buf[pos] = 0;
7136 while (status == INPUT_OK || status == INPUT_SKIP) {
7137 int key;
7139 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
7140 wclrtoeol(status_win);
7142 key = get_input(pos + 1);
7143 switch (key) {
7144 case KEY_RETURN:
7145 case KEY_ENTER:
7146 case '\n':
7147 status = pos ? INPUT_STOP : INPUT_CANCEL;
7148 break;
7150 case KEY_BACKSPACE:
7151 if (pos > 0)
7152 buf[--pos] = 0;
7153 else
7154 status = INPUT_CANCEL;
7155 break;
7157 case KEY_ESC:
7158 status = INPUT_CANCEL;
7159 break;
7161 default:
7162 if (pos >= sizeof(buf)) {
7163 report("Input string too long");
7164 return NULL;
7165 }
7167 status = handler(data, buf, key);
7168 if (status == INPUT_OK)
7169 buf[pos++] = (char) key;
7170 }
7171 }
7173 /* Clear the status window */
7174 status_empty = FALSE;
7175 report("");
7177 if (status == INPUT_CANCEL)
7178 return NULL;
7180 buf[pos++] = 0;
7182 return buf;
7183 }
7185 static enum input_status
7186 prompt_yesno_handler(void *data, char *buf, int c)
7187 {
7188 if (c == 'y' || c == 'Y')
7189 return INPUT_STOP;
7190 if (c == 'n' || c == 'N')
7191 return INPUT_CANCEL;
7192 return INPUT_SKIP;
7193 }
7195 static bool
7196 prompt_yesno(const char *prompt)
7197 {
7198 char prompt2[SIZEOF_STR];
7200 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
7201 return FALSE;
7203 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
7204 }
7206 static enum input_status
7207 read_prompt_handler(void *data, char *buf, int c)
7208 {
7209 return isprint(c) ? INPUT_OK : INPUT_SKIP;
7210 }
7212 static char *
7213 read_prompt(const char *prompt)
7214 {
7215 return prompt_input(prompt, read_prompt_handler, NULL);
7216 }
7218 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
7219 {
7220 enum input_status status = INPUT_OK;
7221 int size = 0;
7223 while (items[size].text)
7224 size++;
7226 while (status == INPUT_OK) {
7227 const struct menu_item *item = &items[*selected];
7228 int key;
7229 int i;
7231 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
7232 prompt, *selected + 1, size);
7233 if (item->hotkey)
7234 wprintw(status_win, "[%c] ", (char) item->hotkey);
7235 wprintw(status_win, "%s", item->text);
7236 wclrtoeol(status_win);
7238 key = get_input(COLS - 1);
7239 switch (key) {
7240 case KEY_RETURN:
7241 case KEY_ENTER:
7242 case '\n':
7243 status = INPUT_STOP;
7244 break;
7246 case KEY_LEFT:
7247 case KEY_UP:
7248 *selected = *selected - 1;
7249 if (*selected < 0)
7250 *selected = size - 1;
7251 break;
7253 case KEY_RIGHT:
7254 case KEY_DOWN:
7255 *selected = (*selected + 1) % size;
7256 break;
7258 case KEY_ESC:
7259 status = INPUT_CANCEL;
7260 break;
7262 default:
7263 for (i = 0; items[i].text; i++)
7264 if (items[i].hotkey == key) {
7265 *selected = i;
7266 status = INPUT_STOP;
7267 break;
7268 }
7269 }
7270 }
7272 /* Clear the status window */
7273 status_empty = FALSE;
7274 report("");
7276 return status != INPUT_CANCEL;
7277 }
7279 /*
7280 * Repository properties
7281 */
7283 static struct ref **refs = NULL;
7284 static size_t refs_size = 0;
7285 static struct ref *refs_head = NULL;
7287 static struct ref_list **ref_lists = NULL;
7288 static size_t ref_lists_size = 0;
7290 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
7291 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
7292 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
7294 static int
7295 compare_refs(const void *ref1_, const void *ref2_)
7296 {
7297 const struct ref *ref1 = *(const struct ref **)ref1_;
7298 const struct ref *ref2 = *(const struct ref **)ref2_;
7300 if (ref1->tag != ref2->tag)
7301 return ref2->tag - ref1->tag;
7302 if (ref1->ltag != ref2->ltag)
7303 return ref2->ltag - ref2->ltag;
7304 if (ref1->head != ref2->head)
7305 return ref2->head - ref1->head;
7306 if (ref1->tracked != ref2->tracked)
7307 return ref2->tracked - ref1->tracked;
7308 if (ref1->remote != ref2->remote)
7309 return ref2->remote - ref1->remote;
7310 return strcmp(ref1->name, ref2->name);
7311 }
7313 static void
7314 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
7315 {
7316 size_t i;
7318 for (i = 0; i < refs_size; i++)
7319 if (!visitor(data, refs[i]))
7320 break;
7321 }
7323 static struct ref *
7324 get_ref_head()
7325 {
7326 return refs_head;
7327 }
7329 static struct ref_list *
7330 get_ref_list(const char *id)
7331 {
7332 struct ref_list *list;
7333 size_t i;
7335 for (i = 0; i < ref_lists_size; i++)
7336 if (!strcmp(id, ref_lists[i]->id))
7337 return ref_lists[i];
7339 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
7340 return NULL;
7341 list = calloc(1, sizeof(*list));
7342 if (!list)
7343 return NULL;
7345 for (i = 0; i < refs_size; i++) {
7346 if (!strcmp(id, refs[i]->id) &&
7347 realloc_refs_list(&list->refs, list->size, 1))
7348 list->refs[list->size++] = refs[i];
7349 }
7351 if (!list->refs) {
7352 free(list);
7353 return NULL;
7354 }
7356 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
7357 ref_lists[ref_lists_size++] = list;
7358 return list;
7359 }
7361 static int
7362 read_ref(char *id, size_t idlen, char *name, size_t namelen)
7363 {
7364 struct ref *ref = NULL;
7365 bool tag = FALSE;
7366 bool ltag = FALSE;
7367 bool remote = FALSE;
7368 bool tracked = FALSE;
7369 bool head = FALSE;
7370 int from = 0, to = refs_size - 1;
7372 if (!prefixcmp(name, "refs/tags/")) {
7373 if (!suffixcmp(name, namelen, "^{}")) {
7374 namelen -= 3;
7375 name[namelen] = 0;
7376 } else {
7377 ltag = TRUE;
7378 }
7380 tag = TRUE;
7381 namelen -= STRING_SIZE("refs/tags/");
7382 name += STRING_SIZE("refs/tags/");
7384 } else if (!prefixcmp(name, "refs/remotes/")) {
7385 remote = TRUE;
7386 namelen -= STRING_SIZE("refs/remotes/");
7387 name += STRING_SIZE("refs/remotes/");
7388 tracked = !strcmp(opt_remote, name);
7390 } else if (!prefixcmp(name, "refs/heads/")) {
7391 namelen -= STRING_SIZE("refs/heads/");
7392 name += STRING_SIZE("refs/heads/");
7393 if (!strncmp(opt_head, name, namelen))
7394 return OK;
7396 } else if (!strcmp(name, "HEAD")) {
7397 head = TRUE;
7398 if (*opt_head) {
7399 namelen = strlen(opt_head);
7400 name = opt_head;
7401 }
7402 }
7404 /* If we are reloading or it's an annotated tag, replace the
7405 * previous SHA1 with the resolved commit id; relies on the fact
7406 * git-ls-remote lists the commit id of an annotated tag right
7407 * before the commit id it points to. */
7408 while (from <= to) {
7409 size_t pos = (to + from) / 2;
7410 int cmp = strcmp(name, refs[pos]->name);
7412 if (!cmp) {
7413 ref = refs[pos];
7414 break;
7415 }
7417 if (cmp < 0)
7418 to = pos - 1;
7419 else
7420 from = pos + 1;
7421 }
7423 if (!ref) {
7424 if (!realloc_refs(&refs, refs_size, 1))
7425 return ERR;
7426 ref = calloc(1, sizeof(*ref) + namelen);
7427 if (!ref)
7428 return ERR;
7429 memmove(refs + from + 1, refs + from,
7430 (refs_size - from) * sizeof(*refs));
7431 refs[from] = ref;
7432 strncpy(ref->name, name, namelen);
7433 refs_size++;
7434 }
7436 ref->head = head;
7437 ref->tag = tag;
7438 ref->ltag = ltag;
7439 ref->remote = remote;
7440 ref->tracked = tracked;
7441 string_copy_rev(ref->id, id);
7443 if (head)
7444 refs_head = ref;
7445 return OK;
7446 }
7448 static int
7449 load_refs(void)
7450 {
7451 const char *head_argv[] = {
7452 "git", "symbolic-ref", "HEAD", NULL
7453 };
7454 static const char *ls_remote_argv[SIZEOF_ARG] = {
7455 "git", "ls-remote", opt_git_dir, NULL
7456 };
7457 static bool init = FALSE;
7458 size_t i;
7460 if (!init) {
7461 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
7462 die("TIG_LS_REMOTE contains too many arguments");
7463 init = TRUE;
7464 }
7466 if (!*opt_git_dir)
7467 return OK;
7469 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
7470 !prefixcmp(opt_head, "refs/heads/")) {
7471 char *offset = opt_head + STRING_SIZE("refs/heads/");
7473 memmove(opt_head, offset, strlen(offset) + 1);
7474 }
7476 refs_head = NULL;
7477 for (i = 0; i < refs_size; i++)
7478 refs[i]->id[0] = 0;
7480 if (io_run_load(ls_remote_argv, "\t", read_ref) == ERR)
7481 return ERR;
7483 /* Update the ref lists to reflect changes. */
7484 for (i = 0; i < ref_lists_size; i++) {
7485 struct ref_list *list = ref_lists[i];
7486 size_t old, new;
7488 for (old = new = 0; old < list->size; old++)
7489 if (!strcmp(list->id, list->refs[old]->id))
7490 list->refs[new++] = list->refs[old];
7491 list->size = new;
7492 }
7494 return OK;
7495 }
7497 static void
7498 set_remote_branch(const char *name, const char *value, size_t valuelen)
7499 {
7500 if (!strcmp(name, ".remote")) {
7501 string_ncopy(opt_remote, value, valuelen);
7503 } else if (*opt_remote && !strcmp(name, ".merge")) {
7504 size_t from = strlen(opt_remote);
7506 if (!prefixcmp(value, "refs/heads/"))
7507 value += STRING_SIZE("refs/heads/");
7509 if (!string_format_from(opt_remote, &from, "/%s", value))
7510 opt_remote[0] = 0;
7511 }
7512 }
7514 static void
7515 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
7516 {
7517 const char *argv[SIZEOF_ARG] = { name, "=" };
7518 int argc = 1 + (cmd == option_set_command);
7519 int error = ERR;
7521 if (!argv_from_string(argv, &argc, value))
7522 config_msg = "Too many option arguments";
7523 else
7524 error = cmd(argc, argv);
7526 if (error == ERR)
7527 warn("Option 'tig.%s': %s", name, config_msg);
7528 }
7530 static bool
7531 set_environment_variable(const char *name, const char *value)
7532 {
7533 size_t len = strlen(name) + 1 + strlen(value) + 1;
7534 char *env = malloc(len);
7536 if (env &&
7537 string_nformat(env, len, NULL, "%s=%s", name, value) &&
7538 putenv(env) == 0)
7539 return TRUE;
7540 free(env);
7541 return FALSE;
7542 }
7544 static void
7545 set_work_tree(const char *value)
7546 {
7547 char cwd[SIZEOF_STR];
7549 if (!getcwd(cwd, sizeof(cwd)))
7550 die("Failed to get cwd path: %s", strerror(errno));
7551 if (chdir(opt_git_dir) < 0)
7552 die("Failed to chdir(%s): %s", strerror(errno));
7553 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
7554 die("Failed to get git path: %s", strerror(errno));
7555 if (chdir(cwd) < 0)
7556 die("Failed to chdir(%s): %s", cwd, strerror(errno));
7557 if (chdir(value) < 0)
7558 die("Failed to chdir(%s): %s", value, strerror(errno));
7559 if (!getcwd(cwd, sizeof(cwd)))
7560 die("Failed to get cwd path: %s", strerror(errno));
7561 if (!set_environment_variable("GIT_WORK_TREE", cwd))
7562 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
7563 if (!set_environment_variable("GIT_DIR", opt_git_dir))
7564 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
7565 opt_is_inside_work_tree = TRUE;
7566 }
7568 static int
7569 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
7570 {
7571 if (!strcmp(name, "i18n.commitencoding"))
7572 string_ncopy(opt_encoding, value, valuelen);
7574 else if (!strcmp(name, "core.editor"))
7575 string_ncopy(opt_editor, value, valuelen);
7577 else if (!strcmp(name, "core.worktree"))
7578 set_work_tree(value);
7580 else if (!prefixcmp(name, "tig.color."))
7581 set_repo_config_option(name + 10, value, option_color_command);
7583 else if (!prefixcmp(name, "tig.bind."))
7584 set_repo_config_option(name + 9, value, option_bind_command);
7586 else if (!prefixcmp(name, "tig."))
7587 set_repo_config_option(name + 4, value, option_set_command);
7589 else if (*opt_head && !prefixcmp(name, "branch.") &&
7590 !strncmp(name + 7, opt_head, strlen(opt_head)))
7591 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
7593 return OK;
7594 }
7596 static int
7597 load_git_config(void)
7598 {
7599 const char *config_list_argv[] = { "git", "config", "--list", NULL };
7601 return io_run_load(config_list_argv, "=", read_repo_config_option);
7602 }
7604 static int
7605 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
7606 {
7607 if (!opt_git_dir[0]) {
7608 string_ncopy(opt_git_dir, name, namelen);
7610 } else if (opt_is_inside_work_tree == -1) {
7611 /* This can be 3 different values depending on the
7612 * version of git being used. If git-rev-parse does not
7613 * understand --is-inside-work-tree it will simply echo
7614 * the option else either "true" or "false" is printed.
7615 * Default to true for the unknown case. */
7616 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
7618 } else if (*name == '.') {
7619 string_ncopy(opt_cdup, name, namelen);
7621 } else {
7622 string_ncopy(opt_prefix, name, namelen);
7623 }
7625 return OK;
7626 }
7628 static int
7629 load_repo_info(void)
7630 {
7631 const char *rev_parse_argv[] = {
7632 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
7633 "--show-cdup", "--show-prefix", NULL
7634 };
7636 return io_run_load(rev_parse_argv, "=", read_repo_info);
7637 }
7640 /*
7641 * Main
7642 */
7644 static const char usage[] =
7645 "tig " TIG_VERSION " (" __DATE__ ")\n"
7646 "\n"
7647 "Usage: tig [options] [revs] [--] [paths]\n"
7648 " or: tig show [options] [revs] [--] [paths]\n"
7649 " or: tig blame [rev] path\n"
7650 " or: tig status\n"
7651 " or: tig < [git command output]\n"
7652 "\n"
7653 "Options:\n"
7654 " -v, --version Show version and exit\n"
7655 " -h, --help Show help message and exit";
7657 static void __NORETURN
7658 quit(int sig)
7659 {
7660 /* XXX: Restore tty modes and let the OS cleanup the rest! */
7661 if (cursed)
7662 endwin();
7663 exit(0);
7664 }
7666 static void __NORETURN
7667 die(const char *err, ...)
7668 {
7669 va_list args;
7671 endwin();
7673 va_start(args, err);
7674 fputs("tig: ", stderr);
7675 vfprintf(stderr, err, args);
7676 fputs("\n", stderr);
7677 va_end(args);
7679 exit(1);
7680 }
7682 static void
7683 warn(const char *msg, ...)
7684 {
7685 va_list args;
7687 va_start(args, msg);
7688 fputs("tig warning: ", stderr);
7689 vfprintf(stderr, msg, args);
7690 fputs("\n", stderr);
7691 va_end(args);
7692 }
7694 static enum request
7695 parse_options(int argc, const char *argv[])
7696 {
7697 enum request request = REQ_VIEW_MAIN;
7698 const char *subcommand;
7699 bool seen_dashdash = FALSE;
7700 /* XXX: This is vulnerable to the user overriding options
7701 * required for the main view parser. */
7702 const char *custom_argv[SIZEOF_ARG] = {
7703 "git", "log", "--no-color", "--pretty=raw", "--parents",
7704 "--topo-order", NULL
7705 };
7706 int i, j = 6;
7708 if (!isatty(STDIN_FILENO)) {
7709 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
7710 return REQ_VIEW_PAGER;
7711 }
7713 if (argc <= 1)
7714 return REQ_NONE;
7716 subcommand = argv[1];
7717 if (!strcmp(subcommand, "status")) {
7718 if (argc > 2)
7719 warn("ignoring arguments after `%s'", subcommand);
7720 return REQ_VIEW_STATUS;
7722 } else if (!strcmp(subcommand, "blame")) {
7723 if (argc <= 2 || argc > 4)
7724 die("invalid number of options to blame\n\n%s", usage);
7726 i = 2;
7727 if (argc == 4) {
7728 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
7729 i++;
7730 }
7732 string_ncopy(opt_file, argv[i], strlen(argv[i]));
7733 return REQ_VIEW_BLAME;
7735 } else if (!strcmp(subcommand, "show")) {
7736 request = REQ_VIEW_DIFF;
7738 } else {
7739 subcommand = NULL;
7740 }
7742 if (subcommand) {
7743 custom_argv[1] = subcommand;
7744 j = 2;
7745 }
7747 for (i = 1 + !!subcommand; i < argc; i++) {
7748 const char *opt = argv[i];
7750 if (seen_dashdash || !strcmp(opt, "--")) {
7751 seen_dashdash = TRUE;
7753 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
7754 printf("tig version %s\n", TIG_VERSION);
7755 quit(0);
7757 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
7758 printf("%s\n", usage);
7759 quit(0);
7760 }
7762 custom_argv[j++] = opt;
7763 if (j >= ARRAY_SIZE(custom_argv))
7764 die("command too long");
7765 }
7767 if (!prepare_update(VIEW(request), custom_argv, NULL))
7768 die("Failed to format arguments");
7770 return request;
7771 }
7773 int
7774 main(int argc, const char *argv[])
7775 {
7776 const char *codeset = "UTF-8";
7777 enum request request = parse_options(argc, argv);
7778 struct view *view;
7779 size_t i;
7781 signal(SIGINT, quit);
7782 signal(SIGPIPE, SIG_IGN);
7784 if (setlocale(LC_ALL, "")) {
7785 codeset = nl_langinfo(CODESET);
7786 }
7788 if (load_repo_info() == ERR)
7789 die("Failed to load repo info.");
7791 if (load_options() == ERR)
7792 die("Failed to load user config.");
7794 if (load_git_config() == ERR)
7795 die("Failed to load repo config.");
7797 /* Require a git repository unless when running in pager mode. */
7798 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7799 die("Not a git repository");
7801 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
7802 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
7803 if (opt_iconv_in == ICONV_NONE)
7804 die("Failed to initialize character set conversion");
7805 }
7807 if (codeset && strcmp(codeset, "UTF-8")) {
7808 opt_iconv_out = iconv_open(codeset, "UTF-8");
7809 if (opt_iconv_out == ICONV_NONE)
7810 die("Failed to initialize character set conversion");
7811 }
7813 if (load_refs() == ERR)
7814 die("Failed to load refs.");
7816 foreach_view (view, i)
7817 if (!argv_from_env(view->ops->argv, view->cmd_env))
7818 die("Too many arguments in the `%s` environment variable",
7819 view->cmd_env);
7821 init_display();
7823 if (request != REQ_NONE)
7824 open_view(NULL, request, OPEN_PREPARED);
7825 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7827 while (view_driver(display[current_view], request)) {
7828 int key = get_input(0);
7830 view = display[current_view];
7831 request = get_keybinding(view->keymap, key);
7833 /* Some low-level request handling. This keeps access to
7834 * status_win restricted. */
7835 switch (request) {
7836 case REQ_NONE:
7837 report("Unknown key, press %s for help",
7838 get_key(view->keymap, REQ_VIEW_HELP));
7839 break;
7840 case REQ_PROMPT:
7841 {
7842 char *cmd = read_prompt(":");
7844 if (cmd && isdigit(*cmd)) {
7845 int lineno = view->lineno + 1;
7847 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7848 select_view_line(view, lineno - 1);
7849 report("");
7850 } else {
7851 report("Unable to parse '%s' as a line number", cmd);
7852 }
7854 } else if (cmd) {
7855 struct view *next = VIEW(REQ_VIEW_PAGER);
7856 const char *argv[SIZEOF_ARG] = { "git" };
7857 int argc = 1;
7859 /* When running random commands, initially show the
7860 * command in the title. However, it maybe later be
7861 * overwritten if a commit line is selected. */
7862 string_ncopy(next->ref, cmd, strlen(cmd));
7864 if (!argv_from_string(argv, &argc, cmd)) {
7865 report("Too many arguments");
7866 } else if (!prepare_update(next, argv, NULL)) {
7867 report("Failed to format command");
7868 } else {
7869 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7870 }
7871 }
7873 request = REQ_NONE;
7874 break;
7875 }
7876 case REQ_SEARCH:
7877 case REQ_SEARCH_BACK:
7878 {
7879 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7880 char *search = read_prompt(prompt);
7882 if (search)
7883 string_ncopy(opt_search, search, strlen(search));
7884 else if (*opt_search)
7885 request = request == REQ_SEARCH ?
7886 REQ_FIND_NEXT :
7887 REQ_FIND_PREV;
7888 else
7889 request = REQ_NONE;
7890 break;
7891 }
7892 default:
7893 break;
7894 }
7895 }
7897 quit(0);
7899 return 0;
7900 }