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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_(RELATIVE), \
523 DATE_(SHORT)
525 enum date {
526 #define DATE_(name) DATE_##name
527 DATE_INFO
528 #undef DATE_
529 };
531 static const struct enum_map date_map[] = {
532 #define DATE_(name) ENUM_MAP(#name, DATE_##name)
533 DATE_INFO
534 #undef DATE_
535 };
537 struct time {
538 time_t sec;
539 int tz;
540 };
542 static inline int timecmp(const struct time *t1, const struct time *t2)
543 {
544 return t1->sec - t2->sec;
545 }
547 static const char *
548 mkdate(const struct time *time, enum date date)
549 {
550 static char buf[DATE_COLS + 1];
551 static const struct enum_map reldate[] = {
552 { "second", 1, 60 * 2 },
553 { "minute", 60, 60 * 60 * 2 },
554 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
555 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
556 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
557 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
558 };
559 struct tm tm;
561 if (!date || !time || !time->sec)
562 return "";
564 if (date == DATE_RELATIVE) {
565 struct timeval now;
566 time_t date = time->sec + time->tz;
567 time_t seconds;
568 int i;
570 gettimeofday(&now, NULL);
571 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
572 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
573 if (seconds >= reldate[i].value)
574 continue;
576 seconds /= reldate[i].namelen;
577 if (!string_format(buf, "%ld %s%s %s",
578 seconds, reldate[i].name,
579 seconds > 1 ? "s" : "",
580 now.tv_sec >= date ? "ago" : "ahead"))
581 break;
582 return buf;
583 }
584 }
586 gmtime_r(&time->sec, &tm);
587 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
588 }
591 #define AUTHOR_VALUES \
592 AUTHOR_(NO), \
593 AUTHOR_(FULL), \
594 AUTHOR_(ABBREVIATED)
596 enum author {
597 #define AUTHOR_(name) AUTHOR_##name
598 AUTHOR_VALUES,
599 #undef AUTHOR_
600 AUTHOR_DEFAULT = AUTHOR_FULL
601 };
603 static const struct enum_map author_map[] = {
604 #define AUTHOR_(name) ENUM_MAP(#name, AUTHOR_##name)
605 AUTHOR_VALUES
606 #undef AUTHOR_
607 };
609 static const char *
610 get_author_initials(const char *author)
611 {
612 static char initials[AUTHOR_COLS * 6 + 1];
613 size_t pos = 0;
614 const char *end = strchr(author, '\0');
616 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
618 memset(initials, 0, sizeof(initials));
619 while (author < end) {
620 unsigned char bytes;
621 size_t i;
623 while (is_initial_sep(*author))
624 author++;
626 bytes = utf8_char_length(author, end);
627 if (bytes < sizeof(initials) - 1 - pos) {
628 while (bytes--) {
629 initials[pos++] = *author++;
630 }
631 }
633 for (i = pos; author < end && !is_initial_sep(*author); author++) {
634 if (i < sizeof(initials) - 1)
635 initials[i++] = *author;
636 }
638 initials[i++] = 0;
639 }
641 return initials;
642 }
645 static bool
646 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
647 {
648 int valuelen;
650 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
651 bool advance = cmd[valuelen] != 0;
653 cmd[valuelen] = 0;
654 argv[(*argc)++] = chomp_string(cmd);
655 cmd = chomp_string(cmd + valuelen + advance);
656 }
658 if (*argc < SIZEOF_ARG)
659 argv[*argc] = NULL;
660 return *argc < SIZEOF_ARG;
661 }
663 static bool
664 argv_from_env(const char **argv, const char *name)
665 {
666 char *env = argv ? getenv(name) : NULL;
667 int argc = 0;
669 if (env && *env)
670 env = strdup(env);
671 return !env || argv_from_string(argv, &argc, env);
672 }
675 /*
676 * Executing external commands.
677 */
679 enum io_type {
680 IO_FD, /* File descriptor based IO. */
681 IO_BG, /* Execute command in the background. */
682 IO_FG, /* Execute command with same std{in,out,err}. */
683 IO_RD, /* Read only fork+exec IO. */
684 IO_WR, /* Write only fork+exec IO. */
685 IO_AP, /* Append fork+exec output to file. */
686 };
688 struct io {
689 enum io_type type; /* The requested type of pipe. */
690 const char *dir; /* Directory from which to execute. */
691 pid_t pid; /* PID of spawned process. */
692 int pipe; /* Pipe end for reading or writing. */
693 int error; /* Error status. */
694 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
695 char *buf; /* Read buffer. */
696 size_t bufalloc; /* Allocated buffer size. */
697 size_t bufsize; /* Buffer content size. */
698 char *bufpos; /* Current buffer position. */
699 unsigned int eof:1; /* Has end of file been reached. */
700 };
702 static void
703 io_reset(struct io *io)
704 {
705 io->pipe = -1;
706 io->pid = 0;
707 io->buf = io->bufpos = NULL;
708 io->bufalloc = io->bufsize = 0;
709 io->error = 0;
710 io->eof = 0;
711 }
713 static void
714 io_init(struct io *io, const char *dir, enum io_type type)
715 {
716 io_reset(io);
717 io->type = type;
718 io->dir = dir;
719 }
721 static bool
722 io_format(struct io *io, const char *dir, enum io_type type,
723 const char *argv[], enum format_flags flags)
724 {
725 io_init(io, dir, type);
726 return format_argv(io->argv, argv, flags);
727 }
729 static bool
730 io_open(struct io *io, const char *fmt, ...)
731 {
732 char name[SIZEOF_STR] = "";
733 bool fits;
734 va_list args;
736 io_init(io, NULL, IO_FD);
738 va_start(args, fmt);
739 fits = vsnprintf(name, sizeof(name), fmt, args) < sizeof(name);
740 va_end(args);
742 if (!fits) {
743 io->error = ENAMETOOLONG;
744 return FALSE;
745 }
746 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
747 if (io->pipe == -1)
748 io->error = errno;
749 return io->pipe != -1;
750 }
752 static bool
753 io_kill(struct io *io)
754 {
755 return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
756 }
758 static bool
759 io_done(struct io *io)
760 {
761 pid_t pid = io->pid;
763 if (io->pipe != -1)
764 close(io->pipe);
765 free(io->buf);
766 io_reset(io);
768 while (pid > 0) {
769 int status;
770 pid_t waiting = waitpid(pid, &status, 0);
772 if (waiting < 0) {
773 if (errno == EINTR)
774 continue;
775 io->error = errno;
776 return FALSE;
777 }
779 return waiting == pid &&
780 !WIFSIGNALED(status) &&
781 WIFEXITED(status) &&
782 !WEXITSTATUS(status);
783 }
785 return TRUE;
786 }
788 static bool
789 io_start(struct io *io)
790 {
791 int pipefds[2] = { -1, -1 };
793 if (io->type == IO_FD)
794 return TRUE;
796 if ((io->type == IO_RD || io->type == IO_WR) && pipe(pipefds) < 0) {
797 io->error = errno;
798 return FALSE;
799 } else if (io->type == IO_AP) {
800 pipefds[1] = io->pipe;
801 }
803 if ((io->pid = fork())) {
804 if (io->pid == -1)
805 io->error = errno;
806 if (pipefds[!(io->type == IO_WR)] != -1)
807 close(pipefds[!(io->type == IO_WR)]);
808 if (io->pid != -1) {
809 io->pipe = pipefds[!!(io->type == IO_WR)];
810 return TRUE;
811 }
813 } else {
814 if (io->type != IO_FG) {
815 int devnull = open("/dev/null", O_RDWR);
816 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
817 int writefd = (io->type == IO_RD || io->type == IO_AP)
818 ? pipefds[1] : devnull;
820 dup2(readfd, STDIN_FILENO);
821 dup2(writefd, STDOUT_FILENO);
822 dup2(devnull, STDERR_FILENO);
824 close(devnull);
825 if (pipefds[0] != -1)
826 close(pipefds[0]);
827 if (pipefds[1] != -1)
828 close(pipefds[1]);
829 }
831 if (io->dir && *io->dir && chdir(io->dir) == -1)
832 exit(errno);
834 execvp(io->argv[0], (char *const*) io->argv);
835 exit(errno);
836 }
838 if (pipefds[!!(io->type == IO_WR)] != -1)
839 close(pipefds[!!(io->type == IO_WR)]);
840 return FALSE;
841 }
843 static bool
844 io_run(struct io *io, const char **argv, const char *dir, enum io_type type)
845 {
846 io_init(io, dir, type);
847 if (!format_argv(io->argv, argv, FORMAT_NONE))
848 return FALSE;
849 return io_start(io);
850 }
852 static int
853 io_complete(struct io *io)
854 {
855 return io_start(io) && io_done(io);
856 }
858 static int
859 io_run_bg(const char **argv)
860 {
861 struct io io = {};
863 if (!io_format(&io, NULL, IO_BG, argv, FORMAT_NONE))
864 return FALSE;
865 return io_complete(&io);
866 }
868 static bool
869 io_run_fg(const char **argv, const char *dir)
870 {
871 struct io io = {};
873 if (!io_format(&io, dir, IO_FG, argv, FORMAT_NONE))
874 return FALSE;
875 return io_complete(&io);
876 }
878 static bool
879 io_run_append(const char **argv, enum format_flags flags, int fd)
880 {
881 struct io io = {};
883 if (!io_format(&io, NULL, IO_AP, argv, flags)) {
884 close(fd);
885 return FALSE;
886 }
888 io.pipe = fd;
889 return io_complete(&io);
890 }
892 static bool
893 io_run_rd(struct io *io, const char **argv, const char *dir, enum format_flags flags)
894 {
895 return io_format(io, dir, IO_RD, argv, flags) && io_start(io);
896 }
898 static bool
899 io_eof(struct io *io)
900 {
901 return io->eof;
902 }
904 static int
905 io_error(struct io *io)
906 {
907 return io->error;
908 }
910 static char *
911 io_strerror(struct io *io)
912 {
913 return strerror(io->error);
914 }
916 static bool
917 io_can_read(struct io *io)
918 {
919 struct timeval tv = { 0, 500 };
920 fd_set fds;
922 FD_ZERO(&fds);
923 FD_SET(io->pipe, &fds);
925 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
926 }
928 static ssize_t
929 io_read(struct io *io, void *buf, size_t bufsize)
930 {
931 do {
932 ssize_t readsize = read(io->pipe, buf, bufsize);
934 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
935 continue;
936 else if (readsize == -1)
937 io->error = errno;
938 else if (readsize == 0)
939 io->eof = 1;
940 return readsize;
941 } while (1);
942 }
944 DEFINE_ALLOCATOR(io_realloc_buf, char, BUFSIZ)
946 static char *
947 io_get(struct io *io, int c, bool can_read)
948 {
949 char *eol;
950 ssize_t readsize;
952 while (TRUE) {
953 if (io->bufsize > 0) {
954 eol = memchr(io->bufpos, c, io->bufsize);
955 if (eol) {
956 char *line = io->bufpos;
958 *eol = 0;
959 io->bufpos = eol + 1;
960 io->bufsize -= io->bufpos - line;
961 return line;
962 }
963 }
965 if (io_eof(io)) {
966 if (io->bufsize) {
967 io->bufpos[io->bufsize] = 0;
968 io->bufsize = 0;
969 return io->bufpos;
970 }
971 return NULL;
972 }
974 if (!can_read)
975 return NULL;
977 if (io->bufsize > 0 && io->bufpos > io->buf)
978 memmove(io->buf, io->bufpos, io->bufsize);
980 if (io->bufalloc == io->bufsize) {
981 if (!io_realloc_buf(&io->buf, io->bufalloc, BUFSIZ))
982 return NULL;
983 io->bufalloc += BUFSIZ;
984 }
986 io->bufpos = io->buf;
987 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
988 if (io_error(io))
989 return NULL;
990 io->bufsize += readsize;
991 }
992 }
994 static bool
995 io_write(struct io *io, const void *buf, size_t bufsize)
996 {
997 size_t written = 0;
999 while (!io_error(io) && written < bufsize) {
1000 ssize_t size;
1002 size = write(io->pipe, buf + written, bufsize - written);
1003 if (size < 0 && (errno == EAGAIN || errno == EINTR))
1004 continue;
1005 else if (size == -1)
1006 io->error = errno;
1007 else
1008 written += size;
1009 }
1011 return written == bufsize;
1012 }
1014 static bool
1015 io_read_buf(struct io *io, char buf[], size_t bufsize)
1016 {
1017 char *result = io_get(io, '\n', TRUE);
1019 if (result) {
1020 result = chomp_string(result);
1021 string_ncopy_do(buf, bufsize, result, strlen(result));
1022 }
1024 return io_done(io) && result;
1025 }
1027 static bool
1028 io_run_buf(const char **argv, char buf[], size_t bufsize)
1029 {
1030 struct io io = {};
1032 return io_run_rd(&io, argv, NULL, FORMAT_NONE)
1033 && io_read_buf(&io, buf, bufsize);
1034 }
1036 static int
1037 io_load(struct io *io, const char *separators,
1038 int (*read_property)(char *, size_t, char *, size_t))
1039 {
1040 char *name;
1041 int state = OK;
1043 if (!io_start(io))
1044 return ERR;
1046 while (state == OK && (name = io_get(io, '\n', TRUE))) {
1047 char *value;
1048 size_t namelen;
1049 size_t valuelen;
1051 name = chomp_string(name);
1052 namelen = strcspn(name, separators);
1054 if (name[namelen]) {
1055 name[namelen] = 0;
1056 value = chomp_string(name + namelen + 1);
1057 valuelen = strlen(value);
1059 } else {
1060 value = "";
1061 valuelen = 0;
1062 }
1064 state = read_property(name, namelen, value, valuelen);
1065 }
1067 if (state != ERR && io_error(io))
1068 state = ERR;
1069 io_done(io);
1071 return state;
1072 }
1074 static int
1075 io_run_load(const char **argv, const char *separators,
1076 int (*read_property)(char *, size_t, char *, size_t))
1077 {
1078 struct io io = {};
1080 return io_format(&io, NULL, IO_RD, argv, FORMAT_NONE)
1081 ? io_load(&io, separators, read_property) : ERR;
1082 }
1085 /*
1086 * User requests
1087 */
1089 #define REQ_INFO \
1090 /* XXX: Keep the view request first and in sync with views[]. */ \
1091 REQ_GROUP("View switching") \
1092 REQ_(VIEW_MAIN, "Show main view"), \
1093 REQ_(VIEW_DIFF, "Show diff view"), \
1094 REQ_(VIEW_LOG, "Show log view"), \
1095 REQ_(VIEW_TREE, "Show tree view"), \
1096 REQ_(VIEW_BLOB, "Show blob view"), \
1097 REQ_(VIEW_BLAME, "Show blame view"), \
1098 REQ_(VIEW_BRANCH, "Show branch view"), \
1099 REQ_(VIEW_HELP, "Show help page"), \
1100 REQ_(VIEW_PAGER, "Show pager view"), \
1101 REQ_(VIEW_STATUS, "Show status view"), \
1102 REQ_(VIEW_STAGE, "Show stage view"), \
1103 \
1104 REQ_GROUP("View manipulation") \
1105 REQ_(ENTER, "Enter current line and scroll"), \
1106 REQ_(NEXT, "Move to next"), \
1107 REQ_(PREVIOUS, "Move to previous"), \
1108 REQ_(PARENT, "Move to parent"), \
1109 REQ_(VIEW_NEXT, "Move focus to next view"), \
1110 REQ_(REFRESH, "Reload and refresh"), \
1111 REQ_(MAXIMIZE, "Maximize the current view"), \
1112 REQ_(VIEW_CLOSE, "Close the current view"), \
1113 REQ_(QUIT, "Close all views and quit"), \
1114 \
1115 REQ_GROUP("View specific requests") \
1116 REQ_(STATUS_UPDATE, "Update file status"), \
1117 REQ_(STATUS_REVERT, "Revert file changes"), \
1118 REQ_(STATUS_MERGE, "Merge file using external tool"), \
1119 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
1120 \
1121 REQ_GROUP("Cursor navigation") \
1122 REQ_(MOVE_UP, "Move cursor one line up"), \
1123 REQ_(MOVE_DOWN, "Move cursor one line down"), \
1124 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
1125 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
1126 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
1127 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
1128 \
1129 REQ_GROUP("Scrolling") \
1130 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
1131 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
1132 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
1133 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
1134 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
1135 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
1136 \
1137 REQ_GROUP("Searching") \
1138 REQ_(SEARCH, "Search the view"), \
1139 REQ_(SEARCH_BACK, "Search backwards in the view"), \
1140 REQ_(FIND_NEXT, "Find next search match"), \
1141 REQ_(FIND_PREV, "Find previous search match"), \
1142 \
1143 REQ_GROUP("Option manipulation") \
1144 REQ_(OPTIONS, "Open option menu"), \
1145 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
1146 REQ_(TOGGLE_DATE, "Toggle date display"), \
1147 REQ_(TOGGLE_DATE_SHORT, "Toggle short (date-only) dates"), \
1148 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
1149 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
1150 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
1151 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
1152 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
1153 \
1154 REQ_GROUP("Misc") \
1155 REQ_(PROMPT, "Bring up the prompt"), \
1156 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
1157 REQ_(SHOW_VERSION, "Show version information"), \
1158 REQ_(STOP_LOADING, "Stop all loading views"), \
1159 REQ_(EDIT, "Open in editor"), \
1160 REQ_(NONE, "Do nothing")
1163 /* User action requests. */
1164 enum request {
1165 #define REQ_GROUP(help)
1166 #define REQ_(req, help) REQ_##req
1168 /* Offset all requests to avoid conflicts with ncurses getch values. */
1169 REQ_OFFSET = KEY_MAX + 1,
1170 REQ_INFO
1172 #undef REQ_GROUP
1173 #undef REQ_
1174 };
1176 struct request_info {
1177 enum request request;
1178 const char *name;
1179 int namelen;
1180 const char *help;
1181 };
1183 static const struct request_info req_info[] = {
1184 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
1185 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
1186 REQ_INFO
1187 #undef REQ_GROUP
1188 #undef REQ_
1189 };
1191 static enum request
1192 get_request(const char *name)
1193 {
1194 int namelen = strlen(name);
1195 int i;
1197 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1198 if (enum_equals(req_info[i], name, namelen))
1199 return req_info[i].request;
1201 return REQ_NONE;
1202 }
1205 /*
1206 * Options
1207 */
1209 /* Option and state variables. */
1210 static enum date opt_date = DATE_DEFAULT;
1211 static enum author opt_author = AUTHOR_DEFAULT;
1212 static bool opt_line_number = FALSE;
1213 static bool opt_line_graphics = TRUE;
1214 static bool opt_rev_graph = FALSE;
1215 static bool opt_show_refs = TRUE;
1216 static int opt_num_interval = 5;
1217 static double opt_hscroll = 0.50;
1218 static double opt_scale_split_view = 2.0 / 3.0;
1219 static int opt_tab_size = 8;
1220 static int opt_author_cols = AUTHOR_COLS;
1221 static char opt_path[SIZEOF_STR] = "";
1222 static char opt_file[SIZEOF_STR] = "";
1223 static char opt_ref[SIZEOF_REF] = "";
1224 static char opt_head[SIZEOF_REF] = "";
1225 static char opt_remote[SIZEOF_REF] = "";
1226 static char opt_encoding[20] = "UTF-8";
1227 static iconv_t opt_iconv_in = ICONV_NONE;
1228 static iconv_t opt_iconv_out = ICONV_NONE;
1229 static char opt_search[SIZEOF_STR] = "";
1230 static char opt_cdup[SIZEOF_STR] = "";
1231 static char opt_prefix[SIZEOF_STR] = "";
1232 static char opt_git_dir[SIZEOF_STR] = "";
1233 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
1234 static char opt_editor[SIZEOF_STR] = "";
1235 static FILE *opt_tty = NULL;
1237 #define is_initial_commit() (!get_ref_head())
1238 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
1241 /*
1242 * Line-oriented content detection.
1243 */
1245 #define LINE_INFO \
1246 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1247 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1248 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
1249 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
1250 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1251 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1252 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1253 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1254 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1255 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1256 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1257 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1258 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1259 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1260 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
1261 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1262 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1263 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1264 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1265 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1266 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
1267 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
1268 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1269 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
1270 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
1271 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1272 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1273 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1274 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
1275 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
1276 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
1277 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1278 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
1279 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1280 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1281 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
1282 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
1283 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
1284 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
1285 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1286 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1287 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
1288 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1289 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
1290 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1291 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
1292 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
1293 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
1294 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
1295 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1296 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
1297 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1298 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1299 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
1300 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
1301 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
1302 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
1304 enum line_type {
1305 #define LINE(type, line, fg, bg, attr) \
1306 LINE_##type
1307 LINE_INFO,
1308 LINE_NONE
1309 #undef LINE
1310 };
1312 struct line_info {
1313 const char *name; /* Option name. */
1314 int namelen; /* Size of option name. */
1315 const char *line; /* The start of line to match. */
1316 int linelen; /* Size of string to match. */
1317 int fg, bg, attr; /* Color and text attributes for the lines. */
1318 };
1320 static struct line_info line_info[] = {
1321 #define LINE(type, line, fg, bg, attr) \
1322 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
1323 LINE_INFO
1324 #undef LINE
1325 };
1327 static enum line_type
1328 get_line_type(const char *line)
1329 {
1330 int linelen = strlen(line);
1331 enum line_type type;
1333 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1334 /* Case insensitive search matches Signed-off-by lines better. */
1335 if (linelen >= line_info[type].linelen &&
1336 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
1337 return type;
1339 return LINE_DEFAULT;
1340 }
1342 static inline int
1343 get_line_attr(enum line_type type)
1344 {
1345 assert(type < ARRAY_SIZE(line_info));
1346 return COLOR_PAIR(type) | line_info[type].attr;
1347 }
1349 static struct line_info *
1350 get_line_info(const char *name)
1351 {
1352 size_t namelen = strlen(name);
1353 enum line_type type;
1355 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1356 if (enum_equals(line_info[type], name, namelen))
1357 return &line_info[type];
1359 return NULL;
1360 }
1362 static void
1363 init_colors(void)
1364 {
1365 int default_bg = line_info[LINE_DEFAULT].bg;
1366 int default_fg = line_info[LINE_DEFAULT].fg;
1367 enum line_type type;
1369 start_color();
1371 if (assume_default_colors(default_fg, default_bg) == ERR) {
1372 default_bg = COLOR_BLACK;
1373 default_fg = COLOR_WHITE;
1374 }
1376 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1377 struct line_info *info = &line_info[type];
1378 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1379 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1381 init_pair(type, fg, bg);
1382 }
1383 }
1385 struct line {
1386 enum line_type type;
1388 /* State flags */
1389 unsigned int selected:1;
1390 unsigned int dirty:1;
1391 unsigned int cleareol:1;
1392 unsigned int other:16;
1394 void *data; /* User data */
1395 };
1398 /*
1399 * Keys
1400 */
1402 struct keybinding {
1403 int alias;
1404 enum request request;
1405 };
1407 static const struct keybinding default_keybindings[] = {
1408 /* View switching */
1409 { 'm', REQ_VIEW_MAIN },
1410 { 'd', REQ_VIEW_DIFF },
1411 { 'l', REQ_VIEW_LOG },
1412 { 't', REQ_VIEW_TREE },
1413 { 'f', REQ_VIEW_BLOB },
1414 { 'B', REQ_VIEW_BLAME },
1415 { 'H', REQ_VIEW_BRANCH },
1416 { 'p', REQ_VIEW_PAGER },
1417 { 'h', REQ_VIEW_HELP },
1418 { 'S', REQ_VIEW_STATUS },
1419 { 'c', REQ_VIEW_STAGE },
1421 /* View manipulation */
1422 { 'q', REQ_VIEW_CLOSE },
1423 { KEY_TAB, REQ_VIEW_NEXT },
1424 { KEY_RETURN, REQ_ENTER },
1425 { KEY_UP, REQ_PREVIOUS },
1426 { KEY_DOWN, REQ_NEXT },
1427 { 'R', REQ_REFRESH },
1428 { KEY_F(5), REQ_REFRESH },
1429 { 'O', REQ_MAXIMIZE },
1431 /* Cursor navigation */
1432 { 'k', REQ_MOVE_UP },
1433 { 'j', REQ_MOVE_DOWN },
1434 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1435 { KEY_END, REQ_MOVE_LAST_LINE },
1436 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1437 { ' ', REQ_MOVE_PAGE_DOWN },
1438 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1439 { 'b', REQ_MOVE_PAGE_UP },
1440 { '-', REQ_MOVE_PAGE_UP },
1442 /* Scrolling */
1443 { KEY_LEFT, REQ_SCROLL_LEFT },
1444 { KEY_RIGHT, REQ_SCROLL_RIGHT },
1445 { KEY_IC, REQ_SCROLL_LINE_UP },
1446 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1447 { 'w', REQ_SCROLL_PAGE_UP },
1448 { 's', REQ_SCROLL_PAGE_DOWN },
1450 /* Searching */
1451 { '/', REQ_SEARCH },
1452 { '?', REQ_SEARCH_BACK },
1453 { 'n', REQ_FIND_NEXT },
1454 { 'N', REQ_FIND_PREV },
1456 /* Misc */
1457 { 'Q', REQ_QUIT },
1458 { 'z', REQ_STOP_LOADING },
1459 { 'v', REQ_SHOW_VERSION },
1460 { 'r', REQ_SCREEN_REDRAW },
1461 { 'o', REQ_OPTIONS },
1462 { '.', REQ_TOGGLE_LINENO },
1463 { 'D', REQ_TOGGLE_DATE },
1464 { 'A', REQ_TOGGLE_AUTHOR },
1465 { 'g', REQ_TOGGLE_REV_GRAPH },
1466 { 'F', REQ_TOGGLE_REFS },
1467 { 'I', REQ_TOGGLE_SORT_ORDER },
1468 { 'i', REQ_TOGGLE_SORT_FIELD },
1469 { ':', REQ_PROMPT },
1470 { 'u', REQ_STATUS_UPDATE },
1471 { '!', REQ_STATUS_REVERT },
1472 { 'M', REQ_STATUS_MERGE },
1473 { '@', REQ_STAGE_NEXT },
1474 { ',', REQ_PARENT },
1475 { 'e', REQ_EDIT },
1476 };
1478 #define KEYMAP_INFO \
1479 KEYMAP_(GENERIC), \
1480 KEYMAP_(MAIN), \
1481 KEYMAP_(DIFF), \
1482 KEYMAP_(LOG), \
1483 KEYMAP_(TREE), \
1484 KEYMAP_(BLOB), \
1485 KEYMAP_(BLAME), \
1486 KEYMAP_(BRANCH), \
1487 KEYMAP_(PAGER), \
1488 KEYMAP_(HELP), \
1489 KEYMAP_(STATUS), \
1490 KEYMAP_(STAGE)
1492 enum keymap {
1493 #define KEYMAP_(name) KEYMAP_##name
1494 KEYMAP_INFO
1495 #undef KEYMAP_
1496 };
1498 static const struct enum_map keymap_table[] = {
1499 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
1500 KEYMAP_INFO
1501 #undef KEYMAP_
1502 };
1504 #define set_keymap(map, name) map_enum(map, keymap_table, name)
1506 struct keybinding_table {
1507 struct keybinding *data;
1508 size_t size;
1509 };
1511 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1513 static void
1514 add_keybinding(enum keymap keymap, enum request request, int key)
1515 {
1516 struct keybinding_table *table = &keybindings[keymap];
1518 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1519 if (!table->data)
1520 die("Failed to allocate keybinding");
1521 table->data[table->size].alias = key;
1522 table->data[table->size++].request = request;
1523 }
1525 /* Looks for a key binding first in the given map, then in the generic map, and
1526 * lastly in the default keybindings. */
1527 static enum request
1528 get_keybinding(enum keymap keymap, int key)
1529 {
1530 size_t i;
1532 for (i = 0; i < keybindings[keymap].size; i++)
1533 if (keybindings[keymap].data[i].alias == key)
1534 return keybindings[keymap].data[i].request;
1536 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1537 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1538 return keybindings[KEYMAP_GENERIC].data[i].request;
1540 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1541 if (default_keybindings[i].alias == key)
1542 return default_keybindings[i].request;
1544 return (enum request) key;
1545 }
1548 struct key {
1549 const char *name;
1550 int value;
1551 };
1553 static const struct key key_table[] = {
1554 { "Enter", KEY_RETURN },
1555 { "Space", ' ' },
1556 { "Backspace", KEY_BACKSPACE },
1557 { "Tab", KEY_TAB },
1558 { "Escape", KEY_ESC },
1559 { "Left", KEY_LEFT },
1560 { "Right", KEY_RIGHT },
1561 { "Up", KEY_UP },
1562 { "Down", KEY_DOWN },
1563 { "Insert", KEY_IC },
1564 { "Delete", KEY_DC },
1565 { "Hash", '#' },
1566 { "Home", KEY_HOME },
1567 { "End", KEY_END },
1568 { "PageUp", KEY_PPAGE },
1569 { "PageDown", KEY_NPAGE },
1570 { "F1", KEY_F(1) },
1571 { "F2", KEY_F(2) },
1572 { "F3", KEY_F(3) },
1573 { "F4", KEY_F(4) },
1574 { "F5", KEY_F(5) },
1575 { "F6", KEY_F(6) },
1576 { "F7", KEY_F(7) },
1577 { "F8", KEY_F(8) },
1578 { "F9", KEY_F(9) },
1579 { "F10", KEY_F(10) },
1580 { "F11", KEY_F(11) },
1581 { "F12", KEY_F(12) },
1582 };
1584 static int
1585 get_key_value(const char *name)
1586 {
1587 int i;
1589 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1590 if (!strcasecmp(key_table[i].name, name))
1591 return key_table[i].value;
1593 if (strlen(name) == 1 && isprint(*name))
1594 return (int) *name;
1596 return ERR;
1597 }
1599 static const char *
1600 get_key_name(int key_value)
1601 {
1602 static char key_char[] = "'X'";
1603 const char *seq = NULL;
1604 int key;
1606 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1607 if (key_table[key].value == key_value)
1608 seq = key_table[key].name;
1610 if (seq == NULL &&
1611 key_value < 127 &&
1612 isprint(key_value)) {
1613 key_char[1] = (char) key_value;
1614 seq = key_char;
1615 }
1617 return seq ? seq : "(no key)";
1618 }
1620 static bool
1621 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
1622 {
1623 const char *sep = *pos > 0 ? ", " : "";
1624 const char *keyname = get_key_name(keybinding->alias);
1626 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
1627 }
1629 static bool
1630 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
1631 enum keymap keymap, bool all)
1632 {
1633 int i;
1635 for (i = 0; i < keybindings[keymap].size; i++) {
1636 if (keybindings[keymap].data[i].request == request) {
1637 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
1638 return FALSE;
1639 if (!all)
1640 break;
1641 }
1642 }
1644 return TRUE;
1645 }
1647 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
1649 static const char *
1650 get_keys(enum keymap keymap, enum request request, bool all)
1651 {
1652 static char buf[BUFSIZ];
1653 size_t pos = 0;
1654 int i;
1656 buf[pos] = 0;
1658 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
1659 return "Too many keybindings!";
1660 if (pos > 0 && !all)
1661 return buf;
1663 if (keymap != KEYMAP_GENERIC) {
1664 /* Only the generic keymap includes the default keybindings when
1665 * listing all keys. */
1666 if (all)
1667 return buf;
1669 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
1670 return "Too many keybindings!";
1671 if (pos)
1672 return buf;
1673 }
1675 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1676 if (default_keybindings[i].request == request) {
1677 if (!append_key(buf, &pos, &default_keybindings[i]))
1678 return "Too many keybindings!";
1679 if (!all)
1680 return buf;
1681 }
1682 }
1684 return buf;
1685 }
1687 struct run_request {
1688 enum keymap keymap;
1689 int key;
1690 const char *argv[SIZEOF_ARG];
1691 };
1693 static struct run_request *run_request;
1694 static size_t run_requests;
1696 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
1698 static enum request
1699 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1700 {
1701 struct run_request *req;
1703 if (argc >= ARRAY_SIZE(req->argv) - 1)
1704 return REQ_NONE;
1706 if (!realloc_run_requests(&run_request, run_requests, 1))
1707 return REQ_NONE;
1709 req = &run_request[run_requests];
1710 req->keymap = keymap;
1711 req->key = key;
1712 req->argv[0] = NULL;
1714 if (!format_argv(req->argv, argv, FORMAT_NONE))
1715 return REQ_NONE;
1717 return REQ_NONE + ++run_requests;
1718 }
1720 static struct run_request *
1721 get_run_request(enum request request)
1722 {
1723 if (request <= REQ_NONE)
1724 return NULL;
1725 return &run_request[request - REQ_NONE - 1];
1726 }
1728 static void
1729 add_builtin_run_requests(void)
1730 {
1731 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1732 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
1733 const char *commit[] = { "git", "commit", NULL };
1734 const char *gc[] = { "git", "gc", NULL };
1735 struct {
1736 enum keymap keymap;
1737 int key;
1738 int argc;
1739 const char **argv;
1740 } reqs[] = {
1741 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1742 { KEYMAP_STATUS, 'C', ARRAY_SIZE(commit) - 1, commit },
1743 { KEYMAP_BRANCH, 'C', ARRAY_SIZE(checkout) - 1, checkout },
1744 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1745 };
1746 int i;
1748 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1749 enum request req;
1751 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1752 if (req != REQ_NONE)
1753 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1754 }
1755 }
1757 /*
1758 * User config file handling.
1759 */
1761 static int config_lineno;
1762 static bool config_errors;
1763 static const char *config_msg;
1765 static const struct enum_map color_map[] = {
1766 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1767 COLOR_MAP(DEFAULT),
1768 COLOR_MAP(BLACK),
1769 COLOR_MAP(BLUE),
1770 COLOR_MAP(CYAN),
1771 COLOR_MAP(GREEN),
1772 COLOR_MAP(MAGENTA),
1773 COLOR_MAP(RED),
1774 COLOR_MAP(WHITE),
1775 COLOR_MAP(YELLOW),
1776 };
1778 static const struct enum_map attr_map[] = {
1779 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1780 ATTR_MAP(NORMAL),
1781 ATTR_MAP(BLINK),
1782 ATTR_MAP(BOLD),
1783 ATTR_MAP(DIM),
1784 ATTR_MAP(REVERSE),
1785 ATTR_MAP(STANDOUT),
1786 ATTR_MAP(UNDERLINE),
1787 };
1789 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1791 static int parse_step(double *opt, const char *arg)
1792 {
1793 *opt = atoi(arg);
1794 if (!strchr(arg, '%'))
1795 return OK;
1797 /* "Shift down" so 100% and 1 does not conflict. */
1798 *opt = (*opt - 1) / 100;
1799 if (*opt >= 1.0) {
1800 *opt = 0.99;
1801 config_msg = "Step value larger than 100%";
1802 return ERR;
1803 }
1804 if (*opt < 0.0) {
1805 *opt = 1;
1806 config_msg = "Invalid step value";
1807 return ERR;
1808 }
1809 return OK;
1810 }
1812 static int
1813 parse_int(int *opt, const char *arg, int min, int max)
1814 {
1815 int value = atoi(arg);
1817 if (min <= value && value <= max) {
1818 *opt = value;
1819 return OK;
1820 }
1822 config_msg = "Integer value out of bound";
1823 return ERR;
1824 }
1826 static bool
1827 set_color(int *color, const char *name)
1828 {
1829 if (map_enum(color, color_map, name))
1830 return TRUE;
1831 if (!prefixcmp(name, "color"))
1832 return parse_int(color, name + 5, 0, 255) == OK;
1833 return FALSE;
1834 }
1836 /* Wants: object fgcolor bgcolor [attribute] */
1837 static int
1838 option_color_command(int argc, const char *argv[])
1839 {
1840 struct line_info *info;
1842 if (argc < 3) {
1843 config_msg = "Wrong number of arguments given to color command";
1844 return ERR;
1845 }
1847 info = get_line_info(argv[0]);
1848 if (!info) {
1849 static const struct enum_map obsolete[] = {
1850 ENUM_MAP("main-delim", LINE_DELIMITER),
1851 ENUM_MAP("main-date", LINE_DATE),
1852 ENUM_MAP("main-author", LINE_AUTHOR),
1853 };
1854 int index;
1856 if (!map_enum(&index, obsolete, argv[0])) {
1857 config_msg = "Unknown color name";
1858 return ERR;
1859 }
1860 info = &line_info[index];
1861 }
1863 if (!set_color(&info->fg, argv[1]) ||
1864 !set_color(&info->bg, argv[2])) {
1865 config_msg = "Unknown color";
1866 return ERR;
1867 }
1869 info->attr = 0;
1870 while (argc-- > 3) {
1871 int attr;
1873 if (!set_attribute(&attr, argv[argc])) {
1874 config_msg = "Unknown attribute";
1875 return ERR;
1876 }
1877 info->attr |= attr;
1878 }
1880 return OK;
1881 }
1883 static int parse_bool(bool *opt, const char *arg)
1884 {
1885 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1886 ? TRUE : FALSE;
1887 return OK;
1888 }
1890 static int parse_enum_do(unsigned int *opt, const char *arg,
1891 const struct enum_map *map, size_t map_size)
1892 {
1893 bool is_true;
1895 assert(map_size > 1);
1897 if (map_enum_do(map, map_size, (int *) opt, arg))
1898 return OK;
1900 if (parse_bool(&is_true, arg) != OK)
1901 return ERR;
1903 *opt = is_true ? map[1].value : map[0].value;
1904 return OK;
1905 }
1907 #define parse_enum(opt, arg, map) \
1908 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1910 static int
1911 parse_string(char *opt, const char *arg, size_t optsize)
1912 {
1913 int arglen = strlen(arg);
1915 switch (arg[0]) {
1916 case '\"':
1917 case '\'':
1918 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1919 config_msg = "Unmatched quotation";
1920 return ERR;
1921 }
1922 arg += 1; arglen -= 2;
1923 default:
1924 string_ncopy_do(opt, optsize, arg, arglen);
1925 return OK;
1926 }
1927 }
1929 /* Wants: name = value */
1930 static int
1931 option_set_command(int argc, const char *argv[])
1932 {
1933 if (argc != 3) {
1934 config_msg = "Wrong number of arguments given to set command";
1935 return ERR;
1936 }
1938 if (strcmp(argv[1], "=")) {
1939 config_msg = "No value assigned";
1940 return ERR;
1941 }
1943 if (!strcmp(argv[0], "show-author"))
1944 return parse_enum(&opt_author, argv[2], author_map);
1946 if (!strcmp(argv[0], "show-date"))
1947 return parse_enum(&opt_date, argv[2], date_map);
1949 if (!strcmp(argv[0], "show-rev-graph"))
1950 return parse_bool(&opt_rev_graph, argv[2]);
1952 if (!strcmp(argv[0], "show-refs"))
1953 return parse_bool(&opt_show_refs, argv[2]);
1955 if (!strcmp(argv[0], "show-line-numbers"))
1956 return parse_bool(&opt_line_number, argv[2]);
1958 if (!strcmp(argv[0], "line-graphics"))
1959 return parse_bool(&opt_line_graphics, argv[2]);
1961 if (!strcmp(argv[0], "line-number-interval"))
1962 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1964 if (!strcmp(argv[0], "author-width"))
1965 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1967 if (!strcmp(argv[0], "horizontal-scroll"))
1968 return parse_step(&opt_hscroll, argv[2]);
1970 if (!strcmp(argv[0], "split-view-height"))
1971 return parse_step(&opt_scale_split_view, argv[2]);
1973 if (!strcmp(argv[0], "tab-size"))
1974 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1976 if (!strcmp(argv[0], "commit-encoding"))
1977 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1979 config_msg = "Unknown variable name";
1980 return ERR;
1981 }
1983 /* Wants: mode request key */
1984 static int
1985 option_bind_command(int argc, const char *argv[])
1986 {
1987 enum request request;
1988 int keymap = -1;
1989 int key;
1991 if (argc < 3) {
1992 config_msg = "Wrong number of arguments given to bind command";
1993 return ERR;
1994 }
1996 if (set_keymap(&keymap, argv[0]) == ERR) {
1997 config_msg = "Unknown key map";
1998 return ERR;
1999 }
2001 key = get_key_value(argv[1]);
2002 if (key == ERR) {
2003 config_msg = "Unknown key";
2004 return ERR;
2005 }
2007 request = get_request(argv[2]);
2008 if (request == REQ_NONE) {
2009 static const struct enum_map obsolete[] = {
2010 ENUM_MAP("cherry-pick", REQ_NONE),
2011 ENUM_MAP("screen-resize", REQ_NONE),
2012 ENUM_MAP("tree-parent", REQ_PARENT),
2013 };
2014 int alias;
2016 if (map_enum(&alias, obsolete, argv[2])) {
2017 if (alias != REQ_NONE)
2018 add_keybinding(keymap, alias, key);
2019 config_msg = "Obsolete request name";
2020 return ERR;
2021 }
2022 }
2023 if (request == REQ_NONE && *argv[2]++ == '!')
2024 request = add_run_request(keymap, key, argc - 2, argv + 2);
2025 if (request == REQ_NONE) {
2026 config_msg = "Unknown request name";
2027 return ERR;
2028 }
2030 add_keybinding(keymap, request, key);
2032 return OK;
2033 }
2035 static int
2036 set_option(const char *opt, char *value)
2037 {
2038 const char *argv[SIZEOF_ARG];
2039 int argc = 0;
2041 if (!argv_from_string(argv, &argc, value)) {
2042 config_msg = "Too many option arguments";
2043 return ERR;
2044 }
2046 if (!strcmp(opt, "color"))
2047 return option_color_command(argc, argv);
2049 if (!strcmp(opt, "set"))
2050 return option_set_command(argc, argv);
2052 if (!strcmp(opt, "bind"))
2053 return option_bind_command(argc, argv);
2055 config_msg = "Unknown option command";
2056 return ERR;
2057 }
2059 static int
2060 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
2061 {
2062 int status = OK;
2064 config_lineno++;
2065 config_msg = "Internal error";
2067 /* Check for comment markers, since read_properties() will
2068 * only ensure opt and value are split at first " \t". */
2069 optlen = strcspn(opt, "#");
2070 if (optlen == 0)
2071 return OK;
2073 if (opt[optlen] != 0) {
2074 config_msg = "No option value";
2075 status = ERR;
2077 } else {
2078 /* Look for comment endings in the value. */
2079 size_t len = strcspn(value, "#");
2081 if (len < valuelen) {
2082 valuelen = len;
2083 value[valuelen] = 0;
2084 }
2086 status = set_option(opt, value);
2087 }
2089 if (status == ERR) {
2090 warn("Error on line %d, near '%.*s': %s",
2091 config_lineno, (int) optlen, opt, config_msg);
2092 config_errors = TRUE;
2093 }
2095 /* Always keep going if errors are encountered. */
2096 return OK;
2097 }
2099 static void
2100 load_option_file(const char *path)
2101 {
2102 struct io io = {};
2104 /* It's OK that the file doesn't exist. */
2105 if (!io_open(&io, "%s", path))
2106 return;
2108 config_lineno = 0;
2109 config_errors = FALSE;
2111 if (io_load(&io, " \t", read_option) == ERR ||
2112 config_errors == TRUE)
2113 warn("Errors while loading %s.", path);
2114 }
2116 static int
2117 load_options(void)
2118 {
2119 const char *home = getenv("HOME");
2120 const char *tigrc_user = getenv("TIGRC_USER");
2121 const char *tigrc_system = getenv("TIGRC_SYSTEM");
2122 char buf[SIZEOF_STR];
2124 add_builtin_run_requests();
2126 if (!tigrc_system)
2127 tigrc_system = SYSCONFDIR "/tigrc";
2128 load_option_file(tigrc_system);
2130 if (!tigrc_user) {
2131 if (!home || !string_format(buf, "%s/.tigrc", home))
2132 return ERR;
2133 tigrc_user = buf;
2134 }
2135 load_option_file(tigrc_user);
2137 return OK;
2138 }
2141 /*
2142 * The viewer
2143 */
2145 struct view;
2146 struct view_ops;
2148 /* The display array of active views and the index of the current view. */
2149 static struct view *display[2];
2150 static unsigned int current_view;
2152 #define foreach_displayed_view(view, i) \
2153 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
2155 #define displayed_views() (display[1] != NULL ? 2 : 1)
2157 /* Current head and commit ID */
2158 static char ref_blob[SIZEOF_REF] = "";
2159 static char ref_commit[SIZEOF_REF] = "HEAD";
2160 static char ref_head[SIZEOF_REF] = "HEAD";
2161 static char ref_branch[SIZEOF_REF] = "";
2163 struct view {
2164 const char *name; /* View name */
2165 const char *cmd_env; /* Command line set via environment */
2166 const char *id; /* Points to either of ref_{head,commit,blob} */
2168 struct view_ops *ops; /* View operations */
2170 enum keymap keymap; /* What keymap does this view have */
2171 bool git_dir; /* Whether the view requires a git directory. */
2172 bool refresh; /* Whether the view supports refreshing. */
2174 char ref[SIZEOF_REF]; /* Hovered commit reference */
2175 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
2177 int height, width; /* The width and height of the main window */
2178 WINDOW *win; /* The main window */
2179 WINDOW *title; /* The title window living below the main window */
2181 /* Navigation */
2182 unsigned long offset; /* Offset of the window top */
2183 unsigned long yoffset; /* Offset from the window side. */
2184 unsigned long lineno; /* Current line number */
2185 unsigned long p_offset; /* Previous offset of the window top */
2186 unsigned long p_yoffset;/* Previous offset from the window side */
2187 unsigned long p_lineno; /* Previous current line number */
2188 bool p_restore; /* Should the previous position be restored. */
2190 /* Searching */
2191 char grep[SIZEOF_STR]; /* Search string */
2192 regex_t *regex; /* Pre-compiled regexp */
2194 /* If non-NULL, points to the view that opened this view. If this view
2195 * is closed tig will switch back to the parent view. */
2196 struct view *parent;
2198 /* Buffering */
2199 size_t lines; /* Total number of lines */
2200 struct line *line; /* Line index */
2201 unsigned int digits; /* Number of digits in the lines member. */
2203 /* Drawing */
2204 struct line *curline; /* Line currently being drawn. */
2205 enum line_type curtype; /* Attribute currently used for drawing. */
2206 unsigned long col; /* Column when drawing. */
2207 bool has_scrolled; /* View was scrolled. */
2209 /* Loading */
2210 struct io io;
2211 struct io *pipe;
2212 time_t start_time;
2213 time_t update_secs;
2214 };
2216 struct view_ops {
2217 /* What type of content being displayed. Used in the title bar. */
2218 const char *type;
2219 /* Default command arguments. */
2220 const char **argv;
2221 /* Open and reads in all view content. */
2222 bool (*open)(struct view *view);
2223 /* Read one line; updates view->line. */
2224 bool (*read)(struct view *view, char *data);
2225 /* Draw one line; @lineno must be < view->height. */
2226 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
2227 /* Depending on view handle a special requests. */
2228 enum request (*request)(struct view *view, enum request request, struct line *line);
2229 /* Search for regexp in a line. */
2230 bool (*grep)(struct view *view, struct line *line);
2231 /* Select line */
2232 void (*select)(struct view *view, struct line *line);
2233 /* Prepare view for loading */
2234 bool (*prepare)(struct view *view);
2235 };
2237 static struct view_ops blame_ops;
2238 static struct view_ops blob_ops;
2239 static struct view_ops diff_ops;
2240 static struct view_ops help_ops;
2241 static struct view_ops log_ops;
2242 static struct view_ops main_ops;
2243 static struct view_ops pager_ops;
2244 static struct view_ops stage_ops;
2245 static struct view_ops status_ops;
2246 static struct view_ops tree_ops;
2247 static struct view_ops branch_ops;
2249 #define VIEW_STR(name, env, ref, ops, map, git, refresh) \
2250 { name, #env, ref, ops, map, git, refresh }
2252 #define VIEW_(id, name, ops, git, refresh, ref) \
2253 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git, refresh)
2255 static struct view views[] = {
2256 VIEW_(MAIN, "main", &main_ops, TRUE, TRUE, ref_head),
2257 VIEW_(DIFF, "diff", &diff_ops, TRUE, FALSE, ref_commit),
2258 VIEW_(LOG, "log", &log_ops, TRUE, TRUE, ref_head),
2259 VIEW_(TREE, "tree", &tree_ops, TRUE, FALSE, ref_commit),
2260 VIEW_(BLOB, "blob", &blob_ops, TRUE, FALSE, ref_blob),
2261 VIEW_(BLAME, "blame", &blame_ops, TRUE, FALSE, ref_commit),
2262 VIEW_(BRANCH, "branch", &branch_ops, TRUE, TRUE, ref_head),
2263 VIEW_(HELP, "help", &help_ops, FALSE, FALSE, ""),
2264 VIEW_(PAGER, "pager", &pager_ops, FALSE, FALSE, "stdin"),
2265 VIEW_(STATUS, "status", &status_ops, TRUE, TRUE, ""),
2266 VIEW_(STAGE, "stage", &stage_ops, TRUE, TRUE, ""),
2267 };
2269 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
2270 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
2272 #define foreach_view(view, i) \
2273 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2275 #define view_is_displayed(view) \
2276 (view == display[0] || view == display[1])
2279 static inline void
2280 set_view_attr(struct view *view, enum line_type type)
2281 {
2282 if (!view->curline->selected && view->curtype != type) {
2283 (void) wattrset(view->win, get_line_attr(type));
2284 wchgat(view->win, -1, 0, type, NULL);
2285 view->curtype = type;
2286 }
2287 }
2289 static int
2290 draw_chars(struct view *view, enum line_type type, const char *string,
2291 int max_len, bool use_tilde)
2292 {
2293 static char out_buffer[BUFSIZ * 2];
2294 int len = 0;
2295 int col = 0;
2296 int trimmed = FALSE;
2297 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
2299 if (max_len <= 0)
2300 return 0;
2302 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
2304 set_view_attr(view, type);
2305 if (len > 0) {
2306 if (opt_iconv_out != ICONV_NONE) {
2307 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
2308 size_t inlen = len + 1;
2310 char *outbuf = out_buffer;
2311 size_t outlen = sizeof(out_buffer);
2313 size_t ret;
2315 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
2316 if (ret != (size_t) -1) {
2317 string = out_buffer;
2318 len = sizeof(out_buffer) - outlen;
2319 }
2320 }
2322 waddnstr(view->win, string, len);
2323 }
2324 if (trimmed && use_tilde) {
2325 set_view_attr(view, LINE_DELIMITER);
2326 waddch(view->win, '~');
2327 col++;
2328 }
2330 return col;
2331 }
2333 static int
2334 draw_space(struct view *view, enum line_type type, int max, int spaces)
2335 {
2336 static char space[] = " ";
2337 int col = 0;
2339 spaces = MIN(max, spaces);
2341 while (spaces > 0) {
2342 int len = MIN(spaces, sizeof(space) - 1);
2344 col += draw_chars(view, type, space, len, FALSE);
2345 spaces -= len;
2346 }
2348 return col;
2349 }
2351 static bool
2352 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
2353 {
2354 view->col += draw_chars(view, type, string, view->width + view->yoffset - view->col, trim);
2355 return view->width + view->yoffset <= view->col;
2356 }
2358 static bool
2359 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
2360 {
2361 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
2362 int max = view->width + view->yoffset - view->col;
2363 int i;
2365 if (max < size)
2366 size = max;
2368 set_view_attr(view, type);
2369 /* Using waddch() instead of waddnstr() ensures that
2370 * they'll be rendered correctly for the cursor line. */
2371 for (i = skip; i < size; i++)
2372 waddch(view->win, graphic[i]);
2374 view->col += size;
2375 if (size < max && skip <= size)
2376 waddch(view->win, ' ');
2377 view->col++;
2379 return view->width + view->yoffset <= view->col;
2380 }
2382 static bool
2383 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
2384 {
2385 int max = MIN(view->width + view->yoffset - view->col, len);
2386 int col;
2388 if (text)
2389 col = draw_chars(view, type, text, max - 1, trim);
2390 else
2391 col = draw_space(view, type, max - 1, max - 1);
2393 view->col += col;
2394 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
2395 return view->width + view->yoffset <= view->col;
2396 }
2398 static bool
2399 draw_date(struct view *view, struct time *time)
2400 {
2401 const char *date = mkdate(time, opt_date);
2402 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
2404 return draw_field(view, LINE_DATE, date, cols, FALSE);
2405 }
2407 static bool
2408 draw_author(struct view *view, const char *author)
2409 {
2410 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
2411 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
2413 if (abbreviate && author)
2414 author = get_author_initials(author);
2416 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
2417 }
2419 static bool
2420 draw_mode(struct view *view, mode_t mode)
2421 {
2422 const char *str;
2424 if (S_ISDIR(mode))
2425 str = "drwxr-xr-x";
2426 else if (S_ISLNK(mode))
2427 str = "lrwxrwxrwx";
2428 else if (S_ISGITLINK(mode))
2429 str = "m---------";
2430 else if (S_ISREG(mode) && mode & S_IXUSR)
2431 str = "-rwxr-xr-x";
2432 else if (S_ISREG(mode))
2433 str = "-rw-r--r--";
2434 else
2435 str = "----------";
2437 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
2438 }
2440 static bool
2441 draw_lineno(struct view *view, unsigned int lineno)
2442 {
2443 char number[10];
2444 int digits3 = view->digits < 3 ? 3 : view->digits;
2445 int max = MIN(view->width + view->yoffset - view->col, digits3);
2446 char *text = NULL;
2447 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
2449 lineno += view->offset + 1;
2450 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2451 static char fmt[] = "%1ld";
2453 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2454 if (string_format(number, fmt, lineno))
2455 text = number;
2456 }
2457 if (text)
2458 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2459 else
2460 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
2461 return draw_graphic(view, LINE_DEFAULT, &separator, 1);
2462 }
2464 static bool
2465 draw_view_line(struct view *view, unsigned int lineno)
2466 {
2467 struct line *line;
2468 bool selected = (view->offset + lineno == view->lineno);
2470 assert(view_is_displayed(view));
2472 if (view->offset + lineno >= view->lines)
2473 return FALSE;
2475 line = &view->line[view->offset + lineno];
2477 wmove(view->win, lineno, 0);
2478 if (line->cleareol)
2479 wclrtoeol(view->win);
2480 view->col = 0;
2481 view->curline = line;
2482 view->curtype = LINE_NONE;
2483 line->selected = FALSE;
2484 line->dirty = line->cleareol = 0;
2486 if (selected) {
2487 set_view_attr(view, LINE_CURSOR);
2488 line->selected = TRUE;
2489 view->ops->select(view, line);
2490 }
2492 return view->ops->draw(view, line, lineno);
2493 }
2495 static void
2496 redraw_view_dirty(struct view *view)
2497 {
2498 bool dirty = FALSE;
2499 int lineno;
2501 for (lineno = 0; lineno < view->height; lineno++) {
2502 if (view->offset + lineno >= view->lines)
2503 break;
2504 if (!view->line[view->offset + lineno].dirty)
2505 continue;
2506 dirty = TRUE;
2507 if (!draw_view_line(view, lineno))
2508 break;
2509 }
2511 if (!dirty)
2512 return;
2513 wnoutrefresh(view->win);
2514 }
2516 static void
2517 redraw_view_from(struct view *view, int lineno)
2518 {
2519 assert(0 <= lineno && lineno < view->height);
2521 for (; lineno < view->height; lineno++) {
2522 if (!draw_view_line(view, lineno))
2523 break;
2524 }
2526 wnoutrefresh(view->win);
2527 }
2529 static void
2530 redraw_view(struct view *view)
2531 {
2532 werase(view->win);
2533 redraw_view_from(view, 0);
2534 }
2537 static void
2538 update_view_title(struct view *view)
2539 {
2540 char buf[SIZEOF_STR];
2541 char state[SIZEOF_STR];
2542 size_t bufpos = 0, statelen = 0;
2544 assert(view_is_displayed(view));
2546 if (view != VIEW(REQ_VIEW_STATUS) && view->lines) {
2547 unsigned int view_lines = view->offset + view->height;
2548 unsigned int lines = view->lines
2549 ? MIN(view_lines, view->lines) * 100 / view->lines
2550 : 0;
2552 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2553 view->ops->type,
2554 view->lineno + 1,
2555 view->lines,
2556 lines);
2558 }
2560 if (view->pipe) {
2561 time_t secs = time(NULL) - view->start_time;
2563 /* Three git seconds are a long time ... */
2564 if (secs > 2)
2565 string_format_from(state, &statelen, " loading %lds", secs);
2566 }
2568 string_format_from(buf, &bufpos, "[%s]", view->name);
2569 if (*view->ref && bufpos < view->width) {
2570 size_t refsize = strlen(view->ref);
2571 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2573 if (minsize < view->width)
2574 refsize = view->width - minsize + 7;
2575 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2576 }
2578 if (statelen && bufpos < view->width) {
2579 string_format_from(buf, &bufpos, "%s", state);
2580 }
2582 if (view == display[current_view])
2583 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2584 else
2585 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2587 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2588 wclrtoeol(view->title);
2589 wnoutrefresh(view->title);
2590 }
2592 static int
2593 apply_step(double step, int value)
2594 {
2595 if (step >= 1)
2596 return (int) step;
2597 value *= step + 0.01;
2598 return value ? value : 1;
2599 }
2601 static void
2602 resize_display(void)
2603 {
2604 int offset, i;
2605 struct view *base = display[0];
2606 struct view *view = display[1] ? display[1] : display[0];
2608 /* Setup window dimensions */
2610 getmaxyx(stdscr, base->height, base->width);
2612 /* Make room for the status window. */
2613 base->height -= 1;
2615 if (view != base) {
2616 /* Horizontal split. */
2617 view->width = base->width;
2618 view->height = apply_step(opt_scale_split_view, base->height);
2619 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
2620 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
2621 base->height -= view->height;
2623 /* Make room for the title bar. */
2624 view->height -= 1;
2625 }
2627 /* Make room for the title bar. */
2628 base->height -= 1;
2630 offset = 0;
2632 foreach_displayed_view (view, i) {
2633 if (!view->win) {
2634 view->win = newwin(view->height, 0, offset, 0);
2635 if (!view->win)
2636 die("Failed to create %s view", view->name);
2638 scrollok(view->win, FALSE);
2640 view->title = newwin(1, 0, offset + view->height, 0);
2641 if (!view->title)
2642 die("Failed to create title window");
2644 } else {
2645 wresize(view->win, view->height, view->width);
2646 mvwin(view->win, offset, 0);
2647 mvwin(view->title, offset + view->height, 0);
2648 }
2650 offset += view->height + 1;
2651 }
2652 }
2654 static void
2655 redraw_display(bool clear)
2656 {
2657 struct view *view;
2658 int i;
2660 foreach_displayed_view (view, i) {
2661 if (clear)
2662 wclear(view->win);
2663 redraw_view(view);
2664 update_view_title(view);
2665 }
2666 }
2668 static void
2669 toggle_enum_option_do(unsigned int *opt, const char *help,
2670 const struct enum_map *map, size_t size)
2671 {
2672 *opt = (*opt + 1) % size;
2673 redraw_display(FALSE);
2674 report("Displaying %s %s", enum_name(map[*opt]), help);
2675 }
2677 #define toggle_enum_option(opt, help, map) \
2678 toggle_enum_option_do(opt, help, map, ARRAY_SIZE(map))
2680 #define toggle_date() toggle_enum_option(&opt_date, "dates", date_map)
2681 #define toggle_author() toggle_enum_option(&opt_author, "author names", author_map)
2683 static void
2684 toggle_view_option(bool *option, const char *help)
2685 {
2686 *option = !*option;
2687 redraw_display(FALSE);
2688 report("%sabling %s", *option ? "En" : "Dis", help);
2689 }
2691 static void
2692 open_option_menu(void)
2693 {
2694 const struct menu_item menu[] = {
2695 { '.', "line numbers", &opt_line_number },
2696 { 'D', "date display", &opt_date },
2697 { 'A', "author display", &opt_author },
2698 { 'g', "revision graph display", &opt_rev_graph },
2699 { 'F', "reference display", &opt_show_refs },
2700 { 0 }
2701 };
2702 int selected = 0;
2704 if (prompt_menu("Toggle option", menu, &selected)) {
2705 if (menu[selected].data == &opt_date)
2706 toggle_date();
2707 else if (menu[selected].data == &opt_author)
2708 toggle_author();
2709 else
2710 toggle_view_option(menu[selected].data, menu[selected].text);
2711 }
2712 }
2714 static void
2715 maximize_view(struct view *view)
2716 {
2717 memset(display, 0, sizeof(display));
2718 current_view = 0;
2719 display[current_view] = view;
2720 resize_display();
2721 redraw_display(FALSE);
2722 report("");
2723 }
2726 /*
2727 * Navigation
2728 */
2730 static bool
2731 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2732 {
2733 if (lineno >= view->lines)
2734 lineno = view->lines > 0 ? view->lines - 1 : 0;
2736 if (offset > lineno || offset + view->height <= lineno) {
2737 unsigned long half = view->height / 2;
2739 if (lineno > half)
2740 offset = lineno - half;
2741 else
2742 offset = 0;
2743 }
2745 if (offset != view->offset || lineno != view->lineno) {
2746 view->offset = offset;
2747 view->lineno = lineno;
2748 return TRUE;
2749 }
2751 return FALSE;
2752 }
2754 /* Scrolling backend */
2755 static void
2756 do_scroll_view(struct view *view, int lines)
2757 {
2758 bool redraw_current_line = FALSE;
2760 /* The rendering expects the new offset. */
2761 view->offset += lines;
2763 assert(0 <= view->offset && view->offset < view->lines);
2764 assert(lines);
2766 /* Move current line into the view. */
2767 if (view->lineno < view->offset) {
2768 view->lineno = view->offset;
2769 redraw_current_line = TRUE;
2770 } else if (view->lineno >= view->offset + view->height) {
2771 view->lineno = view->offset + view->height - 1;
2772 redraw_current_line = TRUE;
2773 }
2775 assert(view->offset <= view->lineno && view->lineno < view->lines);
2777 /* Redraw the whole screen if scrolling is pointless. */
2778 if (view->height < ABS(lines)) {
2779 redraw_view(view);
2781 } else {
2782 int line = lines > 0 ? view->height - lines : 0;
2783 int end = line + ABS(lines);
2785 scrollok(view->win, TRUE);
2786 wscrl(view->win, lines);
2787 scrollok(view->win, FALSE);
2789 while (line < end && draw_view_line(view, line))
2790 line++;
2792 if (redraw_current_line)
2793 draw_view_line(view, view->lineno - view->offset);
2794 wnoutrefresh(view->win);
2795 }
2797 view->has_scrolled = TRUE;
2798 report("");
2799 }
2801 /* Scroll frontend */
2802 static void
2803 scroll_view(struct view *view, enum request request)
2804 {
2805 int lines = 1;
2807 assert(view_is_displayed(view));
2809 switch (request) {
2810 case REQ_SCROLL_LEFT:
2811 if (view->yoffset == 0) {
2812 report("Cannot scroll beyond the first column");
2813 return;
2814 }
2815 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2816 view->yoffset = 0;
2817 else
2818 view->yoffset -= apply_step(opt_hscroll, view->width);
2819 redraw_view_from(view, 0);
2820 report("");
2821 return;
2822 case REQ_SCROLL_RIGHT:
2823 view->yoffset += apply_step(opt_hscroll, view->width);
2824 redraw_view(view);
2825 report("");
2826 return;
2827 case REQ_SCROLL_PAGE_DOWN:
2828 lines = view->height;
2829 case REQ_SCROLL_LINE_DOWN:
2830 if (view->offset + lines > view->lines)
2831 lines = view->lines - view->offset;
2833 if (lines == 0 || view->offset + view->height >= view->lines) {
2834 report("Cannot scroll beyond the last line");
2835 return;
2836 }
2837 break;
2839 case REQ_SCROLL_PAGE_UP:
2840 lines = view->height;
2841 case REQ_SCROLL_LINE_UP:
2842 if (lines > view->offset)
2843 lines = view->offset;
2845 if (lines == 0) {
2846 report("Cannot scroll beyond the first line");
2847 return;
2848 }
2850 lines = -lines;
2851 break;
2853 default:
2854 die("request %d not handled in switch", request);
2855 }
2857 do_scroll_view(view, lines);
2858 }
2860 /* Cursor moving */
2861 static void
2862 move_view(struct view *view, enum request request)
2863 {
2864 int scroll_steps = 0;
2865 int steps;
2867 switch (request) {
2868 case REQ_MOVE_FIRST_LINE:
2869 steps = -view->lineno;
2870 break;
2872 case REQ_MOVE_LAST_LINE:
2873 steps = view->lines - view->lineno - 1;
2874 break;
2876 case REQ_MOVE_PAGE_UP:
2877 steps = view->height > view->lineno
2878 ? -view->lineno : -view->height;
2879 break;
2881 case REQ_MOVE_PAGE_DOWN:
2882 steps = view->lineno + view->height >= view->lines
2883 ? view->lines - view->lineno - 1 : view->height;
2884 break;
2886 case REQ_MOVE_UP:
2887 steps = -1;
2888 break;
2890 case REQ_MOVE_DOWN:
2891 steps = 1;
2892 break;
2894 default:
2895 die("request %d not handled in switch", request);
2896 }
2898 if (steps <= 0 && view->lineno == 0) {
2899 report("Cannot move beyond the first line");
2900 return;
2902 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2903 report("Cannot move beyond the last line");
2904 return;
2905 }
2907 /* Move the current line */
2908 view->lineno += steps;
2909 assert(0 <= view->lineno && view->lineno < view->lines);
2911 /* Check whether the view needs to be scrolled */
2912 if (view->lineno < view->offset ||
2913 view->lineno >= view->offset + view->height) {
2914 scroll_steps = steps;
2915 if (steps < 0 && -steps > view->offset) {
2916 scroll_steps = -view->offset;
2918 } else if (steps > 0) {
2919 if (view->lineno == view->lines - 1 &&
2920 view->lines > view->height) {
2921 scroll_steps = view->lines - view->offset - 1;
2922 if (scroll_steps >= view->height)
2923 scroll_steps -= view->height - 1;
2924 }
2925 }
2926 }
2928 if (!view_is_displayed(view)) {
2929 view->offset += scroll_steps;
2930 assert(0 <= view->offset && view->offset < view->lines);
2931 view->ops->select(view, &view->line[view->lineno]);
2932 return;
2933 }
2935 /* Repaint the old "current" line if we be scrolling */
2936 if (ABS(steps) < view->height)
2937 draw_view_line(view, view->lineno - steps - view->offset);
2939 if (scroll_steps) {
2940 do_scroll_view(view, scroll_steps);
2941 return;
2942 }
2944 /* Draw the current line */
2945 draw_view_line(view, view->lineno - view->offset);
2947 wnoutrefresh(view->win);
2948 report("");
2949 }
2952 /*
2953 * Searching
2954 */
2956 static void search_view(struct view *view, enum request request);
2958 static bool
2959 grep_text(struct view *view, const char *text[])
2960 {
2961 regmatch_t pmatch;
2962 size_t i;
2964 for (i = 0; text[i]; i++)
2965 if (*text[i] &&
2966 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2967 return TRUE;
2968 return FALSE;
2969 }
2971 static void
2972 select_view_line(struct view *view, unsigned long lineno)
2973 {
2974 unsigned long old_lineno = view->lineno;
2975 unsigned long old_offset = view->offset;
2977 if (goto_view_line(view, view->offset, lineno)) {
2978 if (view_is_displayed(view)) {
2979 if (old_offset != view->offset) {
2980 redraw_view(view);
2981 } else {
2982 draw_view_line(view, old_lineno - view->offset);
2983 draw_view_line(view, view->lineno - view->offset);
2984 wnoutrefresh(view->win);
2985 }
2986 } else {
2987 view->ops->select(view, &view->line[view->lineno]);
2988 }
2989 }
2990 }
2992 static void
2993 find_next(struct view *view, enum request request)
2994 {
2995 unsigned long lineno = view->lineno;
2996 int direction;
2998 if (!*view->grep) {
2999 if (!*opt_search)
3000 report("No previous search");
3001 else
3002 search_view(view, request);
3003 return;
3004 }
3006 switch (request) {
3007 case REQ_SEARCH:
3008 case REQ_FIND_NEXT:
3009 direction = 1;
3010 break;
3012 case REQ_SEARCH_BACK:
3013 case REQ_FIND_PREV:
3014 direction = -1;
3015 break;
3017 default:
3018 return;
3019 }
3021 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
3022 lineno += direction;
3024 /* Note, lineno is unsigned long so will wrap around in which case it
3025 * will become bigger than view->lines. */
3026 for (; lineno < view->lines; lineno += direction) {
3027 if (view->ops->grep(view, &view->line[lineno])) {
3028 select_view_line(view, lineno);
3029 report("Line %ld matches '%s'", lineno + 1, view->grep);
3030 return;
3031 }
3032 }
3034 report("No match found for '%s'", view->grep);
3035 }
3037 static void
3038 search_view(struct view *view, enum request request)
3039 {
3040 int regex_err;
3042 if (view->regex) {
3043 regfree(view->regex);
3044 *view->grep = 0;
3045 } else {
3046 view->regex = calloc(1, sizeof(*view->regex));
3047 if (!view->regex)
3048 return;
3049 }
3051 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
3052 if (regex_err != 0) {
3053 char buf[SIZEOF_STR] = "unknown error";
3055 regerror(regex_err, view->regex, buf, sizeof(buf));
3056 report("Search failed: %s", buf);
3057 return;
3058 }
3060 string_copy(view->grep, opt_search);
3062 find_next(view, request);
3063 }
3065 /*
3066 * Incremental updating
3067 */
3069 static void
3070 reset_view(struct view *view)
3071 {
3072 int i;
3074 for (i = 0; i < view->lines; i++)
3075 free(view->line[i].data);
3076 free(view->line);
3078 view->p_offset = view->offset;
3079 view->p_yoffset = view->yoffset;
3080 view->p_lineno = view->lineno;
3082 view->line = NULL;
3083 view->offset = 0;
3084 view->yoffset = 0;
3085 view->lines = 0;
3086 view->lineno = 0;
3087 view->vid[0] = 0;
3088 view->update_secs = 0;
3089 }
3091 static void
3092 free_argv(const char *argv[])
3093 {
3094 int argc;
3096 for (argc = 0; argv[argc]; argc++)
3097 free((void *) argv[argc]);
3098 }
3100 static const char *
3101 format_arg(const char *name)
3102 {
3103 static struct {
3104 const char *name;
3105 size_t namelen;
3106 const char *value;
3107 const char *value_if_empty;
3108 } vars[] = {
3109 #define FORMAT_VAR(name, value, value_if_empty) \
3110 { name, STRING_SIZE(name), value, value_if_empty }
3111 FORMAT_VAR("%(directory)", opt_path, ""),
3112 FORMAT_VAR("%(file)", opt_file, ""),
3113 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
3114 FORMAT_VAR("%(head)", ref_head, ""),
3115 FORMAT_VAR("%(commit)", ref_commit, ""),
3116 FORMAT_VAR("%(blob)", ref_blob, ""),
3117 FORMAT_VAR("%(branch)", ref_branch, ""),
3118 };
3119 int i;
3121 for (i = 0; i < ARRAY_SIZE(vars); i++)
3122 if (!strncmp(name, vars[i].name, vars[i].namelen))
3123 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
3125 report("Unknown replacement: `%s`", name);
3126 return NULL;
3127 }
3129 static bool
3130 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
3131 {
3132 char buf[SIZEOF_STR];
3133 int argc;
3134 bool noreplace = flags == FORMAT_NONE;
3136 free_argv(dst_argv);
3138 for (argc = 0; src_argv[argc]; argc++) {
3139 const char *arg = src_argv[argc];
3140 size_t bufpos = 0;
3142 while (arg) {
3143 char *next = strstr(arg, "%(");
3144 int len = next - arg;
3145 const char *value;
3147 if (!next || noreplace) {
3148 len = strlen(arg);
3149 value = "";
3151 } else {
3152 value = format_arg(next);
3154 if (!value) {
3155 return FALSE;
3156 }
3157 }
3159 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
3160 return FALSE;
3162 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
3163 }
3165 dst_argv[argc] = strdup(buf);
3166 if (!dst_argv[argc])
3167 break;
3168 }
3170 dst_argv[argc] = NULL;
3172 return src_argv[argc] == NULL;
3173 }
3175 static bool
3176 restore_view_position(struct view *view)
3177 {
3178 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
3179 return FALSE;
3181 /* Changing the view position cancels the restoring. */
3182 /* FIXME: Changing back to the first line is not detected. */
3183 if (view->offset != 0 || view->lineno != 0) {
3184 view->p_restore = FALSE;
3185 return FALSE;
3186 }
3188 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
3189 view_is_displayed(view))
3190 werase(view->win);
3192 view->yoffset = view->p_yoffset;
3193 view->p_restore = FALSE;
3195 return TRUE;
3196 }
3198 static void
3199 end_update(struct view *view, bool force)
3200 {
3201 if (!view->pipe)
3202 return;
3203 while (!view->ops->read(view, NULL))
3204 if (!force)
3205 return;
3206 if (force)
3207 io_kill(view->pipe);
3208 io_done(view->pipe);
3209 view->pipe = NULL;
3210 }
3212 static void
3213 setup_update(struct view *view, const char *vid)
3214 {
3215 reset_view(view);
3216 string_copy_rev(view->vid, vid);
3217 view->pipe = &view->io;
3218 view->start_time = time(NULL);
3219 }
3221 static bool
3222 prepare_update(struct view *view, const char *argv[], const char *dir)
3223 {
3224 if (view->pipe)
3225 end_update(view, TRUE);
3226 return io_format(&view->io, dir, IO_RD, argv, FORMAT_NONE);
3227 }
3229 static bool
3230 prepare_update_file(struct view *view, const char *name)
3231 {
3232 if (view->pipe)
3233 end_update(view, TRUE);
3234 return io_open(&view->io, "%s/%s", opt_cdup[0] ? opt_cdup : ".", name);
3235 }
3237 static bool
3238 begin_update(struct view *view, bool refresh)
3239 {
3240 if (view->pipe)
3241 end_update(view, TRUE);
3243 if (!refresh) {
3244 if (view->ops->prepare) {
3245 if (!view->ops->prepare(view))
3246 return FALSE;
3247 } else if (!io_format(&view->io, NULL, IO_RD, view->ops->argv, FORMAT_ALL)) {
3248 return FALSE;
3249 }
3251 /* Put the current ref_* value to the view title ref
3252 * member. This is needed by the blob view. Most other
3253 * views sets it automatically after loading because the
3254 * first line is a commit line. */
3255 string_copy_rev(view->ref, view->id);
3256 }
3258 if (!io_start(&view->io))
3259 return FALSE;
3261 setup_update(view, view->id);
3263 return TRUE;
3264 }
3266 static bool
3267 update_view(struct view *view)
3268 {
3269 char out_buffer[BUFSIZ * 2];
3270 char *line;
3271 /* Clear the view and redraw everything since the tree sorting
3272 * might have rearranged things. */
3273 bool redraw = view->lines == 0;
3274 bool can_read = TRUE;
3276 if (!view->pipe)
3277 return TRUE;
3279 if (!io_can_read(view->pipe)) {
3280 if (view->lines == 0 && view_is_displayed(view)) {
3281 time_t secs = time(NULL) - view->start_time;
3283 if (secs > 1 && secs > view->update_secs) {
3284 if (view->update_secs == 0)
3285 redraw_view(view);
3286 update_view_title(view);
3287 view->update_secs = secs;
3288 }
3289 }
3290 return TRUE;
3291 }
3293 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
3294 if (opt_iconv_in != ICONV_NONE) {
3295 ICONV_CONST char *inbuf = line;
3296 size_t inlen = strlen(line) + 1;
3298 char *outbuf = out_buffer;
3299 size_t outlen = sizeof(out_buffer);
3301 size_t ret;
3303 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
3304 if (ret != (size_t) -1)
3305 line = out_buffer;
3306 }
3308 if (!view->ops->read(view, line)) {
3309 report("Allocation failure");
3310 end_update(view, TRUE);
3311 return FALSE;
3312 }
3313 }
3315 {
3316 unsigned long lines = view->lines;
3317 int digits;
3319 for (digits = 0; lines; digits++)
3320 lines /= 10;
3322 /* Keep the displayed view in sync with line number scaling. */
3323 if (digits != view->digits) {
3324 view->digits = digits;
3325 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
3326 redraw = TRUE;
3327 }
3328 }
3330 if (io_error(view->pipe)) {
3331 report("Failed to read: %s", io_strerror(view->pipe));
3332 end_update(view, TRUE);
3334 } else if (io_eof(view->pipe)) {
3335 report("");
3336 end_update(view, FALSE);
3337 }
3339 if (restore_view_position(view))
3340 redraw = TRUE;
3342 if (!view_is_displayed(view))
3343 return TRUE;
3345 if (redraw)
3346 redraw_view_from(view, 0);
3347 else
3348 redraw_view_dirty(view);
3350 /* Update the title _after_ the redraw so that if the redraw picks up a
3351 * commit reference in view->ref it'll be available here. */
3352 update_view_title(view);
3353 return TRUE;
3354 }
3356 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
3358 static struct line *
3359 add_line_data(struct view *view, void *data, enum line_type type)
3360 {
3361 struct line *line;
3363 if (!realloc_lines(&view->line, view->lines, 1))
3364 return NULL;
3366 line = &view->line[view->lines++];
3367 memset(line, 0, sizeof(*line));
3368 line->type = type;
3369 line->data = data;
3370 line->dirty = 1;
3372 return line;
3373 }
3375 static struct line *
3376 add_line_text(struct view *view, const char *text, enum line_type type)
3377 {
3378 char *data = text ? strdup(text) : NULL;
3380 return data ? add_line_data(view, data, type) : NULL;
3381 }
3383 static struct line *
3384 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
3385 {
3386 char buf[SIZEOF_STR];
3387 va_list args;
3389 va_start(args, fmt);
3390 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
3391 buf[0] = 0;
3392 va_end(args);
3394 return buf[0] ? add_line_text(view, buf, type) : NULL;
3395 }
3397 /*
3398 * View opening
3399 */
3401 enum open_flags {
3402 OPEN_DEFAULT = 0, /* Use default view switching. */
3403 OPEN_SPLIT = 1, /* Split current view. */
3404 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
3405 OPEN_REFRESH = 16, /* Refresh view using previous command. */
3406 OPEN_PREPARED = 32, /* Open already prepared command. */
3407 };
3409 static void
3410 open_view(struct view *prev, enum request request, enum open_flags flags)
3411 {
3412 bool split = !!(flags & OPEN_SPLIT);
3413 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
3414 bool nomaximize = !!(flags & OPEN_REFRESH);
3415 struct view *view = VIEW(request);
3416 int nviews = displayed_views();
3417 struct view *base_view = display[0];
3419 if (view == prev && nviews == 1 && !reload) {
3420 report("Already in %s view", view->name);
3421 return;
3422 }
3424 if (view->git_dir && !opt_git_dir[0]) {
3425 report("The %s view is disabled in pager view", view->name);
3426 return;
3427 }
3429 if (split) {
3430 display[1] = view;
3431 current_view = 1;
3432 } else if (!nomaximize) {
3433 /* Maximize the current view. */
3434 memset(display, 0, sizeof(display));
3435 current_view = 0;
3436 display[current_view] = view;
3437 }
3439 /* No parent signals that this is the first loaded view. */
3440 if (prev && view != prev) {
3441 view->parent = prev;
3442 }
3444 /* Resize the view when switching between split- and full-screen,
3445 * or when switching between two different full-screen views. */
3446 if (nviews != displayed_views() ||
3447 (nviews == 1 && base_view != display[0]))
3448 resize_display();
3450 if (view->ops->open) {
3451 if (view->pipe)
3452 end_update(view, TRUE);
3453 if (!view->ops->open(view)) {
3454 report("Failed to load %s view", view->name);
3455 return;
3456 }
3457 restore_view_position(view);
3459 } else if ((reload || strcmp(view->vid, view->id)) &&
3460 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3461 report("Failed to load %s view", view->name);
3462 return;
3463 }
3465 if (split && prev->lineno - prev->offset >= prev->height) {
3466 /* Take the title line into account. */
3467 int lines = prev->lineno - prev->offset - prev->height + 1;
3469 /* Scroll the view that was split if the current line is
3470 * outside the new limited view. */
3471 do_scroll_view(prev, lines);
3472 }
3474 if (prev && view != prev && split && view_is_displayed(prev)) {
3475 /* "Blur" the previous view. */
3476 update_view_title(prev);
3477 }
3479 if (view->pipe && view->lines == 0) {
3480 /* Clear the old view and let the incremental updating refill
3481 * the screen. */
3482 werase(view->win);
3483 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3484 report("");
3485 } else if (view_is_displayed(view)) {
3486 redraw_view(view);
3487 report("");
3488 }
3489 }
3491 static void
3492 open_external_viewer(const char *argv[], const char *dir)
3493 {
3494 def_prog_mode(); /* save current tty modes */
3495 endwin(); /* restore original tty modes */
3496 io_run_fg(argv, dir);
3497 fprintf(stderr, "Press Enter to continue");
3498 getc(opt_tty);
3499 reset_prog_mode();
3500 redraw_display(TRUE);
3501 }
3503 static void
3504 open_mergetool(const char *file)
3505 {
3506 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3508 open_external_viewer(mergetool_argv, opt_cdup);
3509 }
3511 static void
3512 open_editor(const char *file)
3513 {
3514 const char *editor_argv[] = { "vi", file, NULL };
3515 const char *editor;
3517 editor = getenv("GIT_EDITOR");
3518 if (!editor && *opt_editor)
3519 editor = opt_editor;
3520 if (!editor)
3521 editor = getenv("VISUAL");
3522 if (!editor)
3523 editor = getenv("EDITOR");
3524 if (!editor)
3525 editor = "vi";
3527 editor_argv[0] = editor;
3528 open_external_viewer(editor_argv, opt_cdup);
3529 }
3531 static void
3532 open_run_request(enum request request)
3533 {
3534 struct run_request *req = get_run_request(request);
3535 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3537 if (!req) {
3538 report("Unknown run request");
3539 return;
3540 }
3542 if (format_argv(argv, req->argv, FORMAT_ALL))
3543 open_external_viewer(argv, NULL);
3544 free_argv(argv);
3545 }
3547 /*
3548 * User request switch noodle
3549 */
3551 static int
3552 view_driver(struct view *view, enum request request)
3553 {
3554 int i;
3556 if (request == REQ_NONE)
3557 return TRUE;
3559 if (request > REQ_NONE) {
3560 open_run_request(request);
3561 /* FIXME: When all views can refresh always do this. */
3562 if (view->refresh)
3563 request = REQ_REFRESH;
3564 else
3565 return TRUE;
3566 }
3568 if (view && view->lines) {
3569 request = view->ops->request(view, request, &view->line[view->lineno]);
3570 if (request == REQ_NONE)
3571 return TRUE;
3572 }
3574 switch (request) {
3575 case REQ_MOVE_UP:
3576 case REQ_MOVE_DOWN:
3577 case REQ_MOVE_PAGE_UP:
3578 case REQ_MOVE_PAGE_DOWN:
3579 case REQ_MOVE_FIRST_LINE:
3580 case REQ_MOVE_LAST_LINE:
3581 move_view(view, request);
3582 break;
3584 case REQ_SCROLL_LEFT:
3585 case REQ_SCROLL_RIGHT:
3586 case REQ_SCROLL_LINE_DOWN:
3587 case REQ_SCROLL_LINE_UP:
3588 case REQ_SCROLL_PAGE_DOWN:
3589 case REQ_SCROLL_PAGE_UP:
3590 scroll_view(view, request);
3591 break;
3593 case REQ_VIEW_BLAME:
3594 if (!opt_file[0]) {
3595 report("No file chosen, press %s to open tree view",
3596 get_key(view->keymap, REQ_VIEW_TREE));
3597 break;
3598 }
3599 open_view(view, request, OPEN_DEFAULT);
3600 break;
3602 case REQ_VIEW_BLOB:
3603 if (!ref_blob[0]) {
3604 report("No file chosen, press %s to open tree view",
3605 get_key(view->keymap, REQ_VIEW_TREE));
3606 break;
3607 }
3608 open_view(view, request, OPEN_DEFAULT);
3609 break;
3611 case REQ_VIEW_PAGER:
3612 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3613 report("No pager content, press %s to run command from prompt",
3614 get_key(view->keymap, REQ_PROMPT));
3615 break;
3616 }
3617 open_view(view, request, OPEN_DEFAULT);
3618 break;
3620 case REQ_VIEW_STAGE:
3621 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3622 report("No stage content, press %s to open the status view and choose file",
3623 get_key(view->keymap, REQ_VIEW_STATUS));
3624 break;
3625 }
3626 open_view(view, request, OPEN_DEFAULT);
3627 break;
3629 case REQ_VIEW_STATUS:
3630 if (opt_is_inside_work_tree == FALSE) {
3631 report("The status view requires a working tree");
3632 break;
3633 }
3634 open_view(view, request, OPEN_DEFAULT);
3635 break;
3637 case REQ_VIEW_MAIN:
3638 case REQ_VIEW_DIFF:
3639 case REQ_VIEW_LOG:
3640 case REQ_VIEW_TREE:
3641 case REQ_VIEW_HELP:
3642 case REQ_VIEW_BRANCH:
3643 open_view(view, request, OPEN_DEFAULT);
3644 break;
3646 case REQ_NEXT:
3647 case REQ_PREVIOUS:
3648 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3650 if ((view == VIEW(REQ_VIEW_DIFF) &&
3651 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3652 (view == VIEW(REQ_VIEW_DIFF) &&
3653 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3654 (view == VIEW(REQ_VIEW_STAGE) &&
3655 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3656 (view == VIEW(REQ_VIEW_BLOB) &&
3657 view->parent == VIEW(REQ_VIEW_TREE)) ||
3658 (view == VIEW(REQ_VIEW_MAIN) &&
3659 view->parent == VIEW(REQ_VIEW_BRANCH))) {
3660 int line;
3662 view = view->parent;
3663 line = view->lineno;
3664 move_view(view, request);
3665 if (view_is_displayed(view))
3666 update_view_title(view);
3667 if (line != view->lineno)
3668 view->ops->request(view, REQ_ENTER,
3669 &view->line[view->lineno]);
3671 } else {
3672 move_view(view, request);
3673 }
3674 break;
3676 case REQ_VIEW_NEXT:
3677 {
3678 int nviews = displayed_views();
3679 int next_view = (current_view + 1) % nviews;
3681 if (next_view == current_view) {
3682 report("Only one view is displayed");
3683 break;
3684 }
3686 current_view = next_view;
3687 /* Blur out the title of the previous view. */
3688 update_view_title(view);
3689 report("");
3690 break;
3691 }
3692 case REQ_REFRESH:
3693 report("Refreshing is not yet supported for the %s view", view->name);
3694 break;
3696 case REQ_MAXIMIZE:
3697 if (displayed_views() == 2)
3698 maximize_view(view);
3699 break;
3701 case REQ_OPTIONS:
3702 open_option_menu();
3703 break;
3705 case REQ_TOGGLE_LINENO:
3706 toggle_view_option(&opt_line_number, "line numbers");
3707 break;
3709 case REQ_TOGGLE_DATE:
3710 toggle_date();
3711 break;
3713 case REQ_TOGGLE_AUTHOR:
3714 toggle_author();
3715 break;
3717 case REQ_TOGGLE_REV_GRAPH:
3718 toggle_view_option(&opt_rev_graph, "revision graph display");
3719 break;
3721 case REQ_TOGGLE_REFS:
3722 toggle_view_option(&opt_show_refs, "reference display");
3723 break;
3725 case REQ_TOGGLE_SORT_FIELD:
3726 case REQ_TOGGLE_SORT_ORDER:
3727 report("Sorting is not yet supported for the %s view", view->name);
3728 break;
3730 case REQ_SEARCH:
3731 case REQ_SEARCH_BACK:
3732 search_view(view, request);
3733 break;
3735 case REQ_FIND_NEXT:
3736 case REQ_FIND_PREV:
3737 find_next(view, request);
3738 break;
3740 case REQ_STOP_LOADING:
3741 for (i = 0; i < ARRAY_SIZE(views); i++) {
3742 view = &views[i];
3743 if (view->pipe)
3744 report("Stopped loading the %s view", view->name),
3745 end_update(view, TRUE);
3746 }
3747 break;
3749 case REQ_SHOW_VERSION:
3750 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3751 return TRUE;
3753 case REQ_SCREEN_REDRAW:
3754 redraw_display(TRUE);
3755 break;
3757 case REQ_EDIT:
3758 report("Nothing to edit");
3759 break;
3761 case REQ_ENTER:
3762 report("Nothing to enter");
3763 break;
3765 case REQ_VIEW_CLOSE:
3766 /* XXX: Mark closed views by letting view->parent point to the
3767 * view itself. Parents to closed view should never be
3768 * followed. */
3769 if (view->parent &&
3770 view->parent->parent != view->parent) {
3771 maximize_view(view->parent);
3772 view->parent = view;
3773 break;
3774 }
3775 /* Fall-through */
3776 case REQ_QUIT:
3777 return FALSE;
3779 default:
3780 report("Unknown key, press %s for help",
3781 get_key(view->keymap, REQ_VIEW_HELP));
3782 return TRUE;
3783 }
3785 return TRUE;
3786 }
3789 /*
3790 * View backend utilities
3791 */
3793 enum sort_field {
3794 ORDERBY_NAME,
3795 ORDERBY_DATE,
3796 ORDERBY_AUTHOR,
3797 };
3799 struct sort_state {
3800 const enum sort_field *fields;
3801 size_t size, current;
3802 bool reverse;
3803 };
3805 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3806 #define get_sort_field(state) ((state).fields[(state).current])
3807 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3809 static void
3810 sort_view(struct view *view, enum request request, struct sort_state *state,
3811 int (*compare)(const void *, const void *))
3812 {
3813 switch (request) {
3814 case REQ_TOGGLE_SORT_FIELD:
3815 state->current = (state->current + 1) % state->size;
3816 break;
3818 case REQ_TOGGLE_SORT_ORDER:
3819 state->reverse = !state->reverse;
3820 break;
3821 default:
3822 die("Not a sort request");
3823 }
3825 qsort(view->line, view->lines, sizeof(*view->line), compare);
3826 redraw_view(view);
3827 }
3829 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3831 /* Small author cache to reduce memory consumption. It uses binary
3832 * search to lookup or find place to position new entries. No entries
3833 * are ever freed. */
3834 static const char *
3835 get_author(const char *name)
3836 {
3837 static const char **authors;
3838 static size_t authors_size;
3839 int from = 0, to = authors_size - 1;
3841 while (from <= to) {
3842 size_t pos = (to + from) / 2;
3843 int cmp = strcmp(name, authors[pos]);
3845 if (!cmp)
3846 return authors[pos];
3848 if (cmp < 0)
3849 to = pos - 1;
3850 else
3851 from = pos + 1;
3852 }
3854 if (!realloc_authors(&authors, authors_size, 1))
3855 return NULL;
3856 name = strdup(name);
3857 if (!name)
3858 return NULL;
3860 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3861 authors[from] = name;
3862 authors_size++;
3864 return name;
3865 }
3867 static void
3868 parse_timesec(struct time *time, const char *sec)
3869 {
3870 time->sec = (time_t) atol(sec);
3871 }
3873 static void
3874 parse_timezone(struct time *time, const char *zone)
3875 {
3876 long tz;
3878 tz = ('0' - zone[1]) * 60 * 60 * 10;
3879 tz += ('0' - zone[2]) * 60 * 60;
3880 tz += ('0' - zone[3]) * 60;
3881 tz += ('0' - zone[4]);
3883 if (zone[0] == '-')
3884 tz = -tz;
3886 time->tz = tz;
3887 time->sec -= tz;
3888 }
3890 /* Parse author lines where the name may be empty:
3891 * author <email@address.tld> 1138474660 +0100
3892 */
3893 static void
3894 parse_author_line(char *ident, const char **author, struct time *time)
3895 {
3896 char *nameend = strchr(ident, '<');
3897 char *emailend = strchr(ident, '>');
3899 if (nameend && emailend)
3900 *nameend = *emailend = 0;
3901 ident = chomp_string(ident);
3902 if (!*ident) {
3903 if (nameend)
3904 ident = chomp_string(nameend + 1);
3905 if (!*ident)
3906 ident = "Unknown";
3907 }
3909 *author = get_author(ident);
3911 /* Parse epoch and timezone */
3912 if (emailend && emailend[1] == ' ') {
3913 char *secs = emailend + 2;
3914 char *zone = strchr(secs, ' ');
3916 parse_timesec(time, secs);
3918 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3919 parse_timezone(time, zone + 1);
3920 }
3921 }
3923 static bool
3924 open_commit_parent_menu(char buf[SIZEOF_STR], int *parents)
3925 {
3926 char rev[SIZEOF_REV];
3927 const char *revlist_argv[] = {
3928 "git", "log", "--no-color", "-1", "--pretty=format:%s", rev, NULL
3929 };
3930 struct menu_item *items;
3931 char text[SIZEOF_STR];
3932 bool ok = TRUE;
3933 int i;
3935 items = calloc(*parents + 1, sizeof(*items));
3936 if (!items)
3937 return FALSE;
3939 for (i = 0; i < *parents; i++) {
3940 string_copy_rev(rev, &buf[SIZEOF_REV * i]);
3941 if (!io_run_buf(revlist_argv, text, sizeof(text)) ||
3942 !(items[i].text = strdup(text))) {
3943 ok = FALSE;
3944 break;
3945 }
3946 }
3948 if (ok) {
3949 *parents = 0;
3950 ok = prompt_menu("Select parent", items, parents);
3951 }
3952 for (i = 0; items[i].text; i++)
3953 free((char *) items[i].text);
3954 free(items);
3955 return ok;
3956 }
3958 static bool
3959 select_commit_parent(const char *id, char rev[SIZEOF_REV], const char *path)
3960 {
3961 char buf[SIZEOF_STR * 4];
3962 const char *revlist_argv[] = {
3963 "git", "log", "--no-color", "-1",
3964 "--pretty=format:%P", id, "--", path, NULL
3965 };
3966 int parents;
3968 if (!io_run_buf(revlist_argv, buf, sizeof(buf)) ||
3969 (parents = strlen(buf) / 40) < 0) {
3970 report("Failed to get parent information");
3971 return FALSE;
3973 } else if (parents == 0) {
3974 if (path)
3975 report("Path '%s' does not exist in the parent", path);
3976 else
3977 report("The selected commit has no parents");
3978 return FALSE;
3979 }
3981 if (parents > 1 && !open_commit_parent_menu(buf, &parents))
3982 return FALSE;
3984 string_copy_rev(rev, &buf[41 * parents]);
3985 return TRUE;
3986 }
3988 /*
3989 * Pager backend
3990 */
3992 static bool
3993 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3994 {
3995 char text[SIZEOF_STR];
3997 if (opt_line_number && draw_lineno(view, lineno))
3998 return TRUE;
4000 string_expand(text, sizeof(text), line->data, opt_tab_size);
4001 draw_text(view, line->type, text, TRUE);
4002 return TRUE;
4003 }
4005 static bool
4006 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
4007 {
4008 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
4009 char ref[SIZEOF_STR];
4011 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
4012 return TRUE;
4014 /* This is the only fatal call, since it can "corrupt" the buffer. */
4015 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
4016 return FALSE;
4018 return TRUE;
4019 }
4021 static void
4022 add_pager_refs(struct view *view, struct line *line)
4023 {
4024 char buf[SIZEOF_STR];
4025 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
4026 struct ref_list *list;
4027 size_t bufpos = 0, i;
4028 const char *sep = "Refs: ";
4029 bool is_tag = FALSE;
4031 assert(line->type == LINE_COMMIT);
4033 list = get_ref_list(commit_id);
4034 if (!list) {
4035 if (view == VIEW(REQ_VIEW_DIFF))
4036 goto try_add_describe_ref;
4037 return;
4038 }
4040 for (i = 0; i < list->size; i++) {
4041 struct ref *ref = list->refs[i];
4042 const char *fmt = ref->tag ? "%s[%s]" :
4043 ref->remote ? "%s<%s>" : "%s%s";
4045 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
4046 return;
4047 sep = ", ";
4048 if (ref->tag)
4049 is_tag = TRUE;
4050 }
4052 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
4053 try_add_describe_ref:
4054 /* Add <tag>-g<commit_id> "fake" reference. */
4055 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
4056 return;
4057 }
4059 if (bufpos == 0)
4060 return;
4062 add_line_text(view, buf, LINE_PP_REFS);
4063 }
4065 static bool
4066 pager_read(struct view *view, char *data)
4067 {
4068 struct line *line;
4070 if (!data)
4071 return TRUE;
4073 line = add_line_text(view, data, get_line_type(data));
4074 if (!line)
4075 return FALSE;
4077 if (line->type == LINE_COMMIT &&
4078 (view == VIEW(REQ_VIEW_DIFF) ||
4079 view == VIEW(REQ_VIEW_LOG)))
4080 add_pager_refs(view, line);
4082 return TRUE;
4083 }
4085 static enum request
4086 pager_request(struct view *view, enum request request, struct line *line)
4087 {
4088 int split = 0;
4090 if (request != REQ_ENTER)
4091 return request;
4093 if (line->type == LINE_COMMIT &&
4094 (view == VIEW(REQ_VIEW_LOG) ||
4095 view == VIEW(REQ_VIEW_PAGER))) {
4096 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
4097 split = 1;
4098 }
4100 /* Always scroll the view even if it was split. That way
4101 * you can use Enter to scroll through the log view and
4102 * split open each commit diff. */
4103 scroll_view(view, REQ_SCROLL_LINE_DOWN);
4105 /* FIXME: A minor workaround. Scrolling the view will call report("")
4106 * but if we are scrolling a non-current view this won't properly
4107 * update the view title. */
4108 if (split)
4109 update_view_title(view);
4111 return REQ_NONE;
4112 }
4114 static bool
4115 pager_grep(struct view *view, struct line *line)
4116 {
4117 const char *text[] = { line->data, NULL };
4119 return grep_text(view, text);
4120 }
4122 static void
4123 pager_select(struct view *view, struct line *line)
4124 {
4125 if (line->type == LINE_COMMIT) {
4126 char *text = (char *)line->data + STRING_SIZE("commit ");
4128 if (view != VIEW(REQ_VIEW_PAGER))
4129 string_copy_rev(view->ref, text);
4130 string_copy_rev(ref_commit, text);
4131 }
4132 }
4134 static struct view_ops pager_ops = {
4135 "line",
4136 NULL,
4137 NULL,
4138 pager_read,
4139 pager_draw,
4140 pager_request,
4141 pager_grep,
4142 pager_select,
4143 };
4145 static const char *log_argv[SIZEOF_ARG] = {
4146 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
4147 };
4149 static enum request
4150 log_request(struct view *view, enum request request, struct line *line)
4151 {
4152 switch (request) {
4153 case REQ_REFRESH:
4154 load_refs();
4155 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
4156 return REQ_NONE;
4157 default:
4158 return pager_request(view, request, line);
4159 }
4160 }
4162 static struct view_ops log_ops = {
4163 "line",
4164 log_argv,
4165 NULL,
4166 pager_read,
4167 pager_draw,
4168 log_request,
4169 pager_grep,
4170 pager_select,
4171 };
4173 static const char *diff_argv[SIZEOF_ARG] = {
4174 "git", "show", "--pretty=fuller", "--no-color", "--root",
4175 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
4176 };
4178 static struct view_ops diff_ops = {
4179 "line",
4180 diff_argv,
4181 NULL,
4182 pager_read,
4183 pager_draw,
4184 pager_request,
4185 pager_grep,
4186 pager_select,
4187 };
4189 /*
4190 * Help backend
4191 */
4193 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
4195 static bool
4196 help_open_keymap_title(struct view *view, enum keymap keymap)
4197 {
4198 struct line *line;
4200 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
4201 help_keymap_hidden[keymap] ? '+' : '-',
4202 enum_name(keymap_table[keymap]));
4203 if (line)
4204 line->other = keymap;
4206 return help_keymap_hidden[keymap];
4207 }
4209 static void
4210 help_open_keymap(struct view *view, enum keymap keymap)
4211 {
4212 const char *group = NULL;
4213 char buf[SIZEOF_STR];
4214 size_t bufpos;
4215 bool add_title = TRUE;
4216 int i;
4218 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
4219 const char *key = NULL;
4221 if (req_info[i].request == REQ_NONE)
4222 continue;
4224 if (!req_info[i].request) {
4225 group = req_info[i].help;
4226 continue;
4227 }
4229 key = get_keys(keymap, req_info[i].request, TRUE);
4230 if (!key || !*key)
4231 continue;
4233 if (add_title && help_open_keymap_title(view, keymap))
4234 return;
4235 add_title = FALSE;
4237 if (group) {
4238 add_line_text(view, group, LINE_HELP_GROUP);
4239 group = NULL;
4240 }
4242 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
4243 enum_name(req_info[i]), req_info[i].help);
4244 }
4246 group = "External commands:";
4248 for (i = 0; i < run_requests; i++) {
4249 struct run_request *req = get_run_request(REQ_NONE + i + 1);
4250 const char *key;
4251 int argc;
4253 if (!req || req->keymap != keymap)
4254 continue;
4256 key = get_key_name(req->key);
4257 if (!*key)
4258 key = "(no key defined)";
4260 if (add_title && help_open_keymap_title(view, keymap))
4261 return;
4262 if (group) {
4263 add_line_text(view, group, LINE_HELP_GROUP);
4264 group = NULL;
4265 }
4267 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
4268 if (!string_format_from(buf, &bufpos, "%s%s",
4269 argc ? " " : "", req->argv[argc]))
4270 return;
4272 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
4273 }
4274 }
4276 static bool
4277 help_open(struct view *view)
4278 {
4279 enum keymap keymap;
4281 reset_view(view);
4282 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
4283 add_line_text(view, "", LINE_DEFAULT);
4285 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
4286 help_open_keymap(view, keymap);
4288 return TRUE;
4289 }
4291 static enum request
4292 help_request(struct view *view, enum request request, struct line *line)
4293 {
4294 switch (request) {
4295 case REQ_ENTER:
4296 if (line->type == LINE_HELP_KEYMAP) {
4297 help_keymap_hidden[line->other] =
4298 !help_keymap_hidden[line->other];
4299 view->p_restore = TRUE;
4300 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
4301 }
4303 return REQ_NONE;
4304 default:
4305 return pager_request(view, request, line);
4306 }
4307 }
4309 static struct view_ops help_ops = {
4310 "line",
4311 NULL,
4312 help_open,
4313 NULL,
4314 pager_draw,
4315 help_request,
4316 pager_grep,
4317 pager_select,
4318 };
4321 /*
4322 * Tree backend
4323 */
4325 struct tree_stack_entry {
4326 struct tree_stack_entry *prev; /* Entry below this in the stack */
4327 unsigned long lineno; /* Line number to restore */
4328 char *name; /* Position of name in opt_path */
4329 };
4331 /* The top of the path stack. */
4332 static struct tree_stack_entry *tree_stack = NULL;
4333 unsigned long tree_lineno = 0;
4335 static void
4336 pop_tree_stack_entry(void)
4337 {
4338 struct tree_stack_entry *entry = tree_stack;
4340 tree_lineno = entry->lineno;
4341 entry->name[0] = 0;
4342 tree_stack = entry->prev;
4343 free(entry);
4344 }
4346 static void
4347 push_tree_stack_entry(const char *name, unsigned long lineno)
4348 {
4349 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
4350 size_t pathlen = strlen(opt_path);
4352 if (!entry)
4353 return;
4355 entry->prev = tree_stack;
4356 entry->name = opt_path + pathlen;
4357 tree_stack = entry;
4359 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
4360 pop_tree_stack_entry();
4361 return;
4362 }
4364 /* Move the current line to the first tree entry. */
4365 tree_lineno = 1;
4366 entry->lineno = lineno;
4367 }
4369 /* Parse output from git-ls-tree(1):
4370 *
4371 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
4372 */
4374 #define SIZEOF_TREE_ATTR \
4375 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
4377 #define SIZEOF_TREE_MODE \
4378 STRING_SIZE("100644 ")
4380 #define TREE_ID_OFFSET \
4381 STRING_SIZE("100644 blob ")
4383 struct tree_entry {
4384 char id[SIZEOF_REV];
4385 mode_t mode;
4386 struct time time; /* Date from the author ident. */
4387 const char *author; /* Author of the commit. */
4388 char name[1];
4389 };
4391 static const char *
4392 tree_path(const struct line *line)
4393 {
4394 return ((struct tree_entry *) line->data)->name;
4395 }
4397 static int
4398 tree_compare_entry(const struct line *line1, const struct line *line2)
4399 {
4400 if (line1->type != line2->type)
4401 return line1->type == LINE_TREE_DIR ? -1 : 1;
4402 return strcmp(tree_path(line1), tree_path(line2));
4403 }
4405 static const enum sort_field tree_sort_fields[] = {
4406 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4407 };
4408 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
4410 static int
4411 tree_compare(const void *l1, const void *l2)
4412 {
4413 const struct line *line1 = (const struct line *) l1;
4414 const struct line *line2 = (const struct line *) l2;
4415 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
4416 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
4418 if (line1->type == LINE_TREE_HEAD)
4419 return -1;
4420 if (line2->type == LINE_TREE_HEAD)
4421 return 1;
4423 switch (get_sort_field(tree_sort_state)) {
4424 case ORDERBY_DATE:
4425 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
4427 case ORDERBY_AUTHOR:
4428 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
4430 case ORDERBY_NAME:
4431 default:
4432 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
4433 }
4434 }
4437 static struct line *
4438 tree_entry(struct view *view, enum line_type type, const char *path,
4439 const char *mode, const char *id)
4440 {
4441 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
4442 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
4444 if (!entry || !line) {
4445 free(entry);
4446 return NULL;
4447 }
4449 strncpy(entry->name, path, strlen(path));
4450 if (mode)
4451 entry->mode = strtoul(mode, NULL, 8);
4452 if (id)
4453 string_copy_rev(entry->id, id);
4455 return line;
4456 }
4458 static bool
4459 tree_read_date(struct view *view, char *text, bool *read_date)
4460 {
4461 static const char *author_name;
4462 static struct time author_time;
4464 if (!text && *read_date) {
4465 *read_date = FALSE;
4466 return TRUE;
4468 } else if (!text) {
4469 char *path = *opt_path ? opt_path : ".";
4470 /* Find next entry to process */
4471 const char *log_file[] = {
4472 "git", "log", "--no-color", "--pretty=raw",
4473 "--cc", "--raw", view->id, "--", path, NULL
4474 };
4475 struct io io = {};
4477 if (!view->lines) {
4478 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
4479 report("Tree is empty");
4480 return TRUE;
4481 }
4483 if (!io_run_rd(&io, log_file, opt_cdup, FORMAT_NONE)) {
4484 report("Failed to load tree data");
4485 return TRUE;
4486 }
4488 io_done(view->pipe);
4489 view->io = io;
4490 *read_date = TRUE;
4491 return FALSE;
4493 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
4494 parse_author_line(text + STRING_SIZE("author "),
4495 &author_name, &author_time);
4497 } else if (*text == ':') {
4498 char *pos;
4499 size_t annotated = 1;
4500 size_t i;
4502 pos = strchr(text, '\t');
4503 if (!pos)
4504 return TRUE;
4505 text = pos + 1;
4506 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
4507 text += strlen(opt_path);
4508 pos = strchr(text, '/');
4509 if (pos)
4510 *pos = 0;
4512 for (i = 1; i < view->lines; i++) {
4513 struct line *line = &view->line[i];
4514 struct tree_entry *entry = line->data;
4516 annotated += !!entry->author;
4517 if (entry->author || strcmp(entry->name, text))
4518 continue;
4520 entry->author = author_name;
4521 entry->time = author_time;
4522 line->dirty = 1;
4523 break;
4524 }
4526 if (annotated == view->lines)
4527 io_kill(view->pipe);
4528 }
4529 return TRUE;
4530 }
4532 static bool
4533 tree_read(struct view *view, char *text)
4534 {
4535 static bool read_date = FALSE;
4536 struct tree_entry *data;
4537 struct line *entry, *line;
4538 enum line_type type;
4539 size_t textlen = text ? strlen(text) : 0;
4540 char *path = text + SIZEOF_TREE_ATTR;
4542 if (read_date || !text)
4543 return tree_read_date(view, text, &read_date);
4545 if (textlen <= SIZEOF_TREE_ATTR)
4546 return FALSE;
4547 if (view->lines == 0 &&
4548 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
4549 return FALSE;
4551 /* Strip the path part ... */
4552 if (*opt_path) {
4553 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
4554 size_t striplen = strlen(opt_path);
4556 if (pathlen > striplen)
4557 memmove(path, path + striplen,
4558 pathlen - striplen + 1);
4560 /* Insert "link" to parent directory. */
4561 if (view->lines == 1 &&
4562 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
4563 return FALSE;
4564 }
4566 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
4567 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
4568 if (!entry)
4569 return FALSE;
4570 data = entry->data;
4572 /* Skip "Directory ..." and ".." line. */
4573 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4574 if (tree_compare_entry(line, entry) <= 0)
4575 continue;
4577 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4579 line->data = data;
4580 line->type = type;
4581 for (; line <= entry; line++)
4582 line->dirty = line->cleareol = 1;
4583 return TRUE;
4584 }
4586 if (tree_lineno > view->lineno) {
4587 view->lineno = tree_lineno;
4588 tree_lineno = 0;
4589 }
4591 return TRUE;
4592 }
4594 static bool
4595 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4596 {
4597 struct tree_entry *entry = line->data;
4599 if (line->type == LINE_TREE_HEAD) {
4600 if (draw_text(view, line->type, "Directory path /", TRUE))
4601 return TRUE;
4602 } else {
4603 if (draw_mode(view, entry->mode))
4604 return TRUE;
4606 if (opt_author && draw_author(view, entry->author))
4607 return TRUE;
4609 if (opt_date && draw_date(view, &entry->time))
4610 return TRUE;
4611 }
4612 if (draw_text(view, line->type, entry->name, TRUE))
4613 return TRUE;
4614 return TRUE;
4615 }
4617 static void
4618 open_blob_editor()
4619 {
4620 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4621 int fd = mkstemp(file);
4623 if (fd == -1)
4624 report("Failed to create temporary file");
4625 else if (!io_run_append(blob_ops.argv, FORMAT_ALL, fd))
4626 report("Failed to save blob data to file");
4627 else
4628 open_editor(file);
4629 if (fd != -1)
4630 unlink(file);
4631 }
4633 static enum request
4634 tree_request(struct view *view, enum request request, struct line *line)
4635 {
4636 enum open_flags flags;
4638 switch (request) {
4639 case REQ_VIEW_BLAME:
4640 if (line->type != LINE_TREE_FILE) {
4641 report("Blame only supported for files");
4642 return REQ_NONE;
4643 }
4645 string_copy(opt_ref, view->vid);
4646 return request;
4648 case REQ_EDIT:
4649 if (line->type != LINE_TREE_FILE) {
4650 report("Edit only supported for files");
4651 } else if (!is_head_commit(view->vid)) {
4652 open_blob_editor();
4653 } else {
4654 open_editor(opt_file);
4655 }
4656 return REQ_NONE;
4658 case REQ_TOGGLE_SORT_FIELD:
4659 case REQ_TOGGLE_SORT_ORDER:
4660 sort_view(view, request, &tree_sort_state, tree_compare);
4661 return REQ_NONE;
4663 case REQ_PARENT:
4664 if (!*opt_path) {
4665 /* quit view if at top of tree */
4666 return REQ_VIEW_CLOSE;
4667 }
4668 /* fake 'cd ..' */
4669 line = &view->line[1];
4670 break;
4672 case REQ_ENTER:
4673 break;
4675 default:
4676 return request;
4677 }
4679 /* Cleanup the stack if the tree view is at a different tree. */
4680 while (!*opt_path && tree_stack)
4681 pop_tree_stack_entry();
4683 switch (line->type) {
4684 case LINE_TREE_DIR:
4685 /* Depending on whether it is a subdirectory or parent link
4686 * mangle the path buffer. */
4687 if (line == &view->line[1] && *opt_path) {
4688 pop_tree_stack_entry();
4690 } else {
4691 const char *basename = tree_path(line);
4693 push_tree_stack_entry(basename, view->lineno);
4694 }
4696 /* Trees and subtrees share the same ID, so they are not not
4697 * unique like blobs. */
4698 flags = OPEN_RELOAD;
4699 request = REQ_VIEW_TREE;
4700 break;
4702 case LINE_TREE_FILE:
4703 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4704 request = REQ_VIEW_BLOB;
4705 break;
4707 default:
4708 return REQ_NONE;
4709 }
4711 open_view(view, request, flags);
4712 if (request == REQ_VIEW_TREE)
4713 view->lineno = tree_lineno;
4715 return REQ_NONE;
4716 }
4718 static bool
4719 tree_grep(struct view *view, struct line *line)
4720 {
4721 struct tree_entry *entry = line->data;
4722 const char *text[] = {
4723 entry->name,
4724 opt_author ? entry->author : "",
4725 mkdate(&entry->time, opt_date),
4726 NULL
4727 };
4729 return grep_text(view, text);
4730 }
4732 static void
4733 tree_select(struct view *view, struct line *line)
4734 {
4735 struct tree_entry *entry = line->data;
4737 if (line->type == LINE_TREE_FILE) {
4738 string_copy_rev(ref_blob, entry->id);
4739 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4741 } else if (line->type != LINE_TREE_DIR) {
4742 return;
4743 }
4745 string_copy_rev(view->ref, entry->id);
4746 }
4748 static bool
4749 tree_prepare(struct view *view)
4750 {
4751 if (view->lines == 0 && opt_prefix[0]) {
4752 char *pos = opt_prefix;
4754 while (pos && *pos) {
4755 char *end = strchr(pos, '/');
4757 if (end)
4758 *end = 0;
4759 push_tree_stack_entry(pos, 0);
4760 pos = end;
4761 if (end) {
4762 *end = '/';
4763 pos++;
4764 }
4765 }
4767 } else if (strcmp(view->vid, view->id)) {
4768 opt_path[0] = 0;
4769 }
4771 return io_format(&view->io, opt_cdup, IO_RD, view->ops->argv, FORMAT_ALL);
4772 }
4774 static const char *tree_argv[SIZEOF_ARG] = {
4775 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4776 };
4778 static struct view_ops tree_ops = {
4779 "file",
4780 tree_argv,
4781 NULL,
4782 tree_read,
4783 tree_draw,
4784 tree_request,
4785 tree_grep,
4786 tree_select,
4787 tree_prepare,
4788 };
4790 static bool
4791 blob_read(struct view *view, char *line)
4792 {
4793 if (!line)
4794 return TRUE;
4795 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4796 }
4798 static enum request
4799 blob_request(struct view *view, enum request request, struct line *line)
4800 {
4801 switch (request) {
4802 case REQ_EDIT:
4803 open_blob_editor();
4804 return REQ_NONE;
4805 default:
4806 return pager_request(view, request, line);
4807 }
4808 }
4810 static const char *blob_argv[SIZEOF_ARG] = {
4811 "git", "cat-file", "blob", "%(blob)", NULL
4812 };
4814 static struct view_ops blob_ops = {
4815 "line",
4816 blob_argv,
4817 NULL,
4818 blob_read,
4819 pager_draw,
4820 blob_request,
4821 pager_grep,
4822 pager_select,
4823 };
4825 /*
4826 * Blame backend
4827 *
4828 * Loading the blame view is a two phase job:
4829 *
4830 * 1. File content is read either using opt_file from the
4831 * filesystem or using git-cat-file.
4832 * 2. Then blame information is incrementally added by
4833 * reading output from git-blame.
4834 */
4836 static const char *blame_head_argv[] = {
4837 "git", "blame", "--incremental", "--", "%(file)", NULL
4838 };
4840 static const char *blame_ref_argv[] = {
4841 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4842 };
4844 static const char *blame_cat_file_argv[] = {
4845 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4846 };
4848 struct blame_commit {
4849 char id[SIZEOF_REV]; /* SHA1 ID. */
4850 char title[128]; /* First line of the commit message. */
4851 const char *author; /* Author of the commit. */
4852 struct time time; /* Date from the author ident. */
4853 char filename[128]; /* Name of file. */
4854 bool has_previous; /* Was a "previous" line detected. */
4855 };
4857 struct blame {
4858 struct blame_commit *commit;
4859 unsigned long lineno;
4860 char text[1];
4861 };
4863 static bool
4864 blame_open(struct view *view)
4865 {
4866 char path[SIZEOF_STR];
4868 if (!view->parent && *opt_prefix) {
4869 string_copy(path, opt_file);
4870 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4871 return FALSE;
4872 }
4874 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4875 if (!io_run_rd(&view->io, blame_cat_file_argv, opt_cdup, FORMAT_ALL))
4876 return FALSE;
4877 }
4879 setup_update(view, opt_file);
4880 string_format(view->ref, "%s ...", opt_file);
4882 return TRUE;
4883 }
4885 static struct blame_commit *
4886 get_blame_commit(struct view *view, const char *id)
4887 {
4888 size_t i;
4890 for (i = 0; i < view->lines; i++) {
4891 struct blame *blame = view->line[i].data;
4893 if (!blame->commit)
4894 continue;
4896 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4897 return blame->commit;
4898 }
4900 {
4901 struct blame_commit *commit = calloc(1, sizeof(*commit));
4903 if (commit)
4904 string_ncopy(commit->id, id, SIZEOF_REV);
4905 return commit;
4906 }
4907 }
4909 static bool
4910 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4911 {
4912 const char *pos = *posref;
4914 *posref = NULL;
4915 pos = strchr(pos + 1, ' ');
4916 if (!pos || !isdigit(pos[1]))
4917 return FALSE;
4918 *number = atoi(pos + 1);
4919 if (*number < min || *number > max)
4920 return FALSE;
4922 *posref = pos;
4923 return TRUE;
4924 }
4926 static struct blame_commit *
4927 parse_blame_commit(struct view *view, const char *text, int *blamed)
4928 {
4929 struct blame_commit *commit;
4930 struct blame *blame;
4931 const char *pos = text + SIZEOF_REV - 2;
4932 size_t orig_lineno = 0;
4933 size_t lineno;
4934 size_t group;
4936 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4937 return NULL;
4939 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4940 !parse_number(&pos, &lineno, 1, view->lines) ||
4941 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4942 return NULL;
4944 commit = get_blame_commit(view, text);
4945 if (!commit)
4946 return NULL;
4948 *blamed += group;
4949 while (group--) {
4950 struct line *line = &view->line[lineno + group - 1];
4952 blame = line->data;
4953 blame->commit = commit;
4954 blame->lineno = orig_lineno + group - 1;
4955 line->dirty = 1;
4956 }
4958 return commit;
4959 }
4961 static bool
4962 blame_read_file(struct view *view, const char *line, bool *read_file)
4963 {
4964 if (!line) {
4965 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
4966 struct io io = {};
4968 if (view->lines == 0 && !view->parent)
4969 die("No blame exist for %s", view->vid);
4971 if (view->lines == 0 || !io_run_rd(&io, argv, opt_cdup, FORMAT_ALL)) {
4972 report("Failed to load blame data");
4973 return TRUE;
4974 }
4976 io_done(view->pipe);
4977 view->io = io;
4978 *read_file = FALSE;
4979 return FALSE;
4981 } else {
4982 size_t linelen = strlen(line);
4983 struct blame *blame = malloc(sizeof(*blame) + linelen);
4985 if (!blame)
4986 return FALSE;
4988 blame->commit = NULL;
4989 strncpy(blame->text, line, linelen);
4990 blame->text[linelen] = 0;
4991 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4992 }
4993 }
4995 static bool
4996 match_blame_header(const char *name, char **line)
4997 {
4998 size_t namelen = strlen(name);
4999 bool matched = !strncmp(name, *line, namelen);
5001 if (matched)
5002 *line += namelen;
5004 return matched;
5005 }
5007 static bool
5008 blame_read(struct view *view, char *line)
5009 {
5010 static struct blame_commit *commit = NULL;
5011 static int blamed = 0;
5012 static bool read_file = TRUE;
5014 if (read_file)
5015 return blame_read_file(view, line, &read_file);
5017 if (!line) {
5018 /* Reset all! */
5019 commit = NULL;
5020 blamed = 0;
5021 read_file = TRUE;
5022 string_format(view->ref, "%s", view->vid);
5023 if (view_is_displayed(view)) {
5024 update_view_title(view);
5025 redraw_view_from(view, 0);
5026 }
5027 return TRUE;
5028 }
5030 if (!commit) {
5031 commit = parse_blame_commit(view, line, &blamed);
5032 string_format(view->ref, "%s %2d%%", view->vid,
5033 view->lines ? blamed * 100 / view->lines : 0);
5035 } else if (match_blame_header("author ", &line)) {
5036 commit->author = get_author(line);
5038 } else if (match_blame_header("author-time ", &line)) {
5039 parse_timesec(&commit->time, line);
5041 } else if (match_blame_header("author-tz ", &line)) {
5042 parse_timezone(&commit->time, line);
5044 } else if (match_blame_header("summary ", &line)) {
5045 string_ncopy(commit->title, line, strlen(line));
5047 } else if (match_blame_header("previous ", &line)) {
5048 commit->has_previous = TRUE;
5050 } else if (match_blame_header("filename ", &line)) {
5051 string_ncopy(commit->filename, line, strlen(line));
5052 commit = NULL;
5053 }
5055 return TRUE;
5056 }
5058 static bool
5059 blame_draw(struct view *view, struct line *line, unsigned int lineno)
5060 {
5061 struct blame *blame = line->data;
5062 struct time *time = NULL;
5063 const char *id = NULL, *author = NULL;
5064 char text[SIZEOF_STR];
5066 if (blame->commit && *blame->commit->filename) {
5067 id = blame->commit->id;
5068 author = blame->commit->author;
5069 time = &blame->commit->time;
5070 }
5072 if (opt_date && draw_date(view, time))
5073 return TRUE;
5075 if (opt_author && draw_author(view, author))
5076 return TRUE;
5078 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
5079 return TRUE;
5081 if (draw_lineno(view, lineno))
5082 return TRUE;
5084 string_expand(text, sizeof(text), blame->text, opt_tab_size);
5085 draw_text(view, LINE_DEFAULT, text, TRUE);
5086 return TRUE;
5087 }
5089 static bool
5090 check_blame_commit(struct blame *blame, bool check_null_id)
5091 {
5092 if (!blame->commit)
5093 report("Commit data not loaded yet");
5094 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
5095 report("No commit exist for the selected line");
5096 else
5097 return TRUE;
5098 return FALSE;
5099 }
5101 static void
5102 setup_blame_parent_line(struct view *view, struct blame *blame)
5103 {
5104 const char *diff_tree_argv[] = {
5105 "git", "diff-tree", "-U0", blame->commit->id,
5106 "--", blame->commit->filename, NULL
5107 };
5108 struct io io = {};
5109 int parent_lineno = -1;
5110 int blamed_lineno = -1;
5111 char *line;
5113 if (!io_run(&io, diff_tree_argv, NULL, IO_RD))
5114 return;
5116 while ((line = io_get(&io, '\n', TRUE))) {
5117 if (*line == '@') {
5118 char *pos = strchr(line, '+');
5120 parent_lineno = atoi(line + 4);
5121 if (pos)
5122 blamed_lineno = atoi(pos + 1);
5124 } else if (*line == '+' && parent_lineno != -1) {
5125 if (blame->lineno == blamed_lineno - 1 &&
5126 !strcmp(blame->text, line + 1)) {
5127 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
5128 break;
5129 }
5130 blamed_lineno++;
5131 }
5132 }
5134 io_done(&io);
5135 }
5137 static enum request
5138 blame_request(struct view *view, enum request request, struct line *line)
5139 {
5140 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5141 struct blame *blame = line->data;
5143 switch (request) {
5144 case REQ_VIEW_BLAME:
5145 if (check_blame_commit(blame, TRUE)) {
5146 string_copy(opt_ref, blame->commit->id);
5147 string_copy(opt_file, blame->commit->filename);
5148 if (blame->lineno)
5149 view->lineno = blame->lineno;
5150 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
5151 }
5152 break;
5154 case REQ_PARENT:
5155 if (check_blame_commit(blame, TRUE) &&
5156 select_commit_parent(blame->commit->id, opt_ref,
5157 blame->commit->filename)) {
5158 string_copy(opt_file, blame->commit->filename);
5159 setup_blame_parent_line(view, blame);
5160 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
5161 }
5162 break;
5164 case REQ_ENTER:
5165 if (!check_blame_commit(blame, FALSE))
5166 break;
5168 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
5169 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
5170 break;
5172 if (!strcmp(blame->commit->id, NULL_ID)) {
5173 struct view *diff = VIEW(REQ_VIEW_DIFF);
5174 const char *diff_index_argv[] = {
5175 "git", "diff-index", "--root", "--patch-with-stat",
5176 "-C", "-M", "HEAD", "--", view->vid, NULL
5177 };
5179 if (!blame->commit->has_previous) {
5180 diff_index_argv[1] = "diff";
5181 diff_index_argv[2] = "--no-color";
5182 diff_index_argv[6] = "--";
5183 diff_index_argv[7] = "/dev/null";
5184 }
5186 if (!prepare_update(diff, diff_index_argv, NULL)) {
5187 report("Failed to allocate diff command");
5188 break;
5189 }
5190 flags |= OPEN_PREPARED;
5191 }
5193 open_view(view, REQ_VIEW_DIFF, flags);
5194 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
5195 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
5196 break;
5198 default:
5199 return request;
5200 }
5202 return REQ_NONE;
5203 }
5205 static bool
5206 blame_grep(struct view *view, struct line *line)
5207 {
5208 struct blame *blame = line->data;
5209 struct blame_commit *commit = blame->commit;
5210 const char *text[] = {
5211 blame->text,
5212 commit ? commit->title : "",
5213 commit ? commit->id : "",
5214 commit && opt_author ? commit->author : "",
5215 commit ? mkdate(&commit->time, opt_date) : "",
5216 NULL
5217 };
5219 return grep_text(view, text);
5220 }
5222 static void
5223 blame_select(struct view *view, struct line *line)
5224 {
5225 struct blame *blame = line->data;
5226 struct blame_commit *commit = blame->commit;
5228 if (!commit)
5229 return;
5231 if (!strcmp(commit->id, NULL_ID))
5232 string_ncopy(ref_commit, "HEAD", 4);
5233 else
5234 string_copy_rev(ref_commit, commit->id);
5235 }
5237 static struct view_ops blame_ops = {
5238 "line",
5239 NULL,
5240 blame_open,
5241 blame_read,
5242 blame_draw,
5243 blame_request,
5244 blame_grep,
5245 blame_select,
5246 };
5248 /*
5249 * Branch backend
5250 */
5252 struct branch {
5253 const char *author; /* Author of the last commit. */
5254 struct time time; /* Date of the last activity. */
5255 const struct ref *ref; /* Name and commit ID information. */
5256 };
5258 static const struct ref branch_all;
5260 static const enum sort_field branch_sort_fields[] = {
5261 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
5262 };
5263 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
5265 static int
5266 branch_compare(const void *l1, const void *l2)
5267 {
5268 const struct branch *branch1 = ((const struct line *) l1)->data;
5269 const struct branch *branch2 = ((const struct line *) l2)->data;
5271 switch (get_sort_field(branch_sort_state)) {
5272 case ORDERBY_DATE:
5273 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
5275 case ORDERBY_AUTHOR:
5276 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
5278 case ORDERBY_NAME:
5279 default:
5280 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
5281 }
5282 }
5284 static bool
5285 branch_draw(struct view *view, struct line *line, unsigned int lineno)
5286 {
5287 struct branch *branch = line->data;
5288 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
5290 if (opt_date && draw_date(view, &branch->time))
5291 return TRUE;
5293 if (opt_author && draw_author(view, branch->author))
5294 return TRUE;
5296 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name, TRUE);
5297 return TRUE;
5298 }
5300 static enum request
5301 branch_request(struct view *view, enum request request, struct line *line)
5302 {
5303 struct branch *branch = line->data;
5305 switch (request) {
5306 case REQ_REFRESH:
5307 load_refs();
5308 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
5309 return REQ_NONE;
5311 case REQ_TOGGLE_SORT_FIELD:
5312 case REQ_TOGGLE_SORT_ORDER:
5313 sort_view(view, request, &branch_sort_state, branch_compare);
5314 return REQ_NONE;
5316 case REQ_ENTER:
5317 if (branch->ref == &branch_all) {
5318 const char *all_branches_argv[] = {
5319 "git", "log", "--no-color", "--pretty=raw", "--parents",
5320 "--topo-order", "--all", NULL
5321 };
5322 struct view *main_view = VIEW(REQ_VIEW_MAIN);
5324 if (!prepare_update(main_view, all_branches_argv, NULL)) {
5325 report("Failed to load view of all branches");
5326 return REQ_NONE;
5327 }
5328 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
5329 } else {
5330 open_view(view, REQ_VIEW_MAIN, OPEN_SPLIT);
5331 }
5332 return REQ_NONE;
5334 default:
5335 return request;
5336 }
5337 }
5339 static bool
5340 branch_read(struct view *view, char *line)
5341 {
5342 static char id[SIZEOF_REV];
5343 struct branch *reference;
5344 size_t i;
5346 if (!line)
5347 return TRUE;
5349 switch (get_line_type(line)) {
5350 case LINE_COMMIT:
5351 string_copy_rev(id, line + STRING_SIZE("commit "));
5352 return TRUE;
5354 case LINE_AUTHOR:
5355 for (i = 0, reference = NULL; i < view->lines; i++) {
5356 struct branch *branch = view->line[i].data;
5358 if (strcmp(branch->ref->id, id))
5359 continue;
5361 view->line[i].dirty = TRUE;
5362 if (reference) {
5363 branch->author = reference->author;
5364 branch->time = reference->time;
5365 continue;
5366 }
5368 parse_author_line(line + STRING_SIZE("author "),
5369 &branch->author, &branch->time);
5370 reference = branch;
5371 }
5372 return TRUE;
5374 default:
5375 return TRUE;
5376 }
5378 }
5380 static bool
5381 branch_open_visitor(void *data, const struct ref *ref)
5382 {
5383 struct view *view = data;
5384 struct branch *branch;
5386 if (ref->tag || ref->ltag || ref->remote)
5387 return TRUE;
5389 branch = calloc(1, sizeof(*branch));
5390 if (!branch)
5391 return FALSE;
5393 branch->ref = ref;
5394 return !!add_line_data(view, branch, LINE_DEFAULT);
5395 }
5397 static bool
5398 branch_open(struct view *view)
5399 {
5400 const char *branch_log[] = {
5401 "git", "log", "--no-color", "--pretty=raw",
5402 "--simplify-by-decoration", "--all", NULL
5403 };
5405 if (!io_run_rd(&view->io, branch_log, NULL, FORMAT_NONE)) {
5406 report("Failed to load branch data");
5407 return TRUE;
5408 }
5410 setup_update(view, view->id);
5411 branch_open_visitor(view, &branch_all);
5412 foreach_ref(branch_open_visitor, view);
5413 view->p_restore = TRUE;
5415 return TRUE;
5416 }
5418 static bool
5419 branch_grep(struct view *view, struct line *line)
5420 {
5421 struct branch *branch = line->data;
5422 const char *text[] = {
5423 branch->ref->name,
5424 branch->author,
5425 NULL
5426 };
5428 return grep_text(view, text);
5429 }
5431 static void
5432 branch_select(struct view *view, struct line *line)
5433 {
5434 struct branch *branch = line->data;
5436 string_copy_rev(view->ref, branch->ref->id);
5437 string_copy_rev(ref_commit, branch->ref->id);
5438 string_copy_rev(ref_head, branch->ref->id);
5439 string_copy_rev(ref_branch, branch->ref->name);
5440 }
5442 static struct view_ops branch_ops = {
5443 "branch",
5444 NULL,
5445 branch_open,
5446 branch_read,
5447 branch_draw,
5448 branch_request,
5449 branch_grep,
5450 branch_select,
5451 };
5453 /*
5454 * Status backend
5455 */
5457 struct status {
5458 char status;
5459 struct {
5460 mode_t mode;
5461 char rev[SIZEOF_REV];
5462 char name[SIZEOF_STR];
5463 } old;
5464 struct {
5465 mode_t mode;
5466 char rev[SIZEOF_REV];
5467 char name[SIZEOF_STR];
5468 } new;
5469 };
5471 static char status_onbranch[SIZEOF_STR];
5472 static struct status stage_status;
5473 static enum line_type stage_line_type;
5474 static size_t stage_chunks;
5475 static int *stage_chunk;
5477 DEFINE_ALLOCATOR(realloc_ints, int, 32)
5479 /* This should work even for the "On branch" line. */
5480 static inline bool
5481 status_has_none(struct view *view, struct line *line)
5482 {
5483 return line < view->line + view->lines && !line[1].data;
5484 }
5486 /* Get fields from the diff line:
5487 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
5488 */
5489 static inline bool
5490 status_get_diff(struct status *file, const char *buf, size_t bufsize)
5491 {
5492 const char *old_mode = buf + 1;
5493 const char *new_mode = buf + 8;
5494 const char *old_rev = buf + 15;
5495 const char *new_rev = buf + 56;
5496 const char *status = buf + 97;
5498 if (bufsize < 98 ||
5499 old_mode[-1] != ':' ||
5500 new_mode[-1] != ' ' ||
5501 old_rev[-1] != ' ' ||
5502 new_rev[-1] != ' ' ||
5503 status[-1] != ' ')
5504 return FALSE;
5506 file->status = *status;
5508 string_copy_rev(file->old.rev, old_rev);
5509 string_copy_rev(file->new.rev, new_rev);
5511 file->old.mode = strtoul(old_mode, NULL, 8);
5512 file->new.mode = strtoul(new_mode, NULL, 8);
5514 file->old.name[0] = file->new.name[0] = 0;
5516 return TRUE;
5517 }
5519 static bool
5520 status_run(struct view *view, const char *argv[], char status, enum line_type type)
5521 {
5522 struct status *unmerged = NULL;
5523 char *buf;
5524 struct io io = {};
5526 if (!io_run(&io, argv, opt_cdup, IO_RD))
5527 return FALSE;
5529 add_line_data(view, NULL, type);
5531 while ((buf = io_get(&io, 0, TRUE))) {
5532 struct status *file = unmerged;
5534 if (!file) {
5535 file = calloc(1, sizeof(*file));
5536 if (!file || !add_line_data(view, file, type))
5537 goto error_out;
5538 }
5540 /* Parse diff info part. */
5541 if (status) {
5542 file->status = status;
5543 if (status == 'A')
5544 string_copy(file->old.rev, NULL_ID);
5546 } else if (!file->status || file == unmerged) {
5547 if (!status_get_diff(file, buf, strlen(buf)))
5548 goto error_out;
5550 buf = io_get(&io, 0, TRUE);
5551 if (!buf)
5552 break;
5554 /* Collapse all modified entries that follow an
5555 * associated unmerged entry. */
5556 if (unmerged == file) {
5557 unmerged->status = 'U';
5558 unmerged = NULL;
5559 } else if (file->status == 'U') {
5560 unmerged = file;
5561 }
5562 }
5564 /* Grab the old name for rename/copy. */
5565 if (!*file->old.name &&
5566 (file->status == 'R' || file->status == 'C')) {
5567 string_ncopy(file->old.name, buf, strlen(buf));
5569 buf = io_get(&io, 0, TRUE);
5570 if (!buf)
5571 break;
5572 }
5574 /* git-ls-files just delivers a NUL separated list of
5575 * file names similar to the second half of the
5576 * git-diff-* output. */
5577 string_ncopy(file->new.name, buf, strlen(buf));
5578 if (!*file->old.name)
5579 string_copy(file->old.name, file->new.name);
5580 file = NULL;
5581 }
5583 if (io_error(&io)) {
5584 error_out:
5585 io_done(&io);
5586 return FALSE;
5587 }
5589 if (!view->line[view->lines - 1].data)
5590 add_line_data(view, NULL, LINE_STAT_NONE);
5592 io_done(&io);
5593 return TRUE;
5594 }
5596 /* Don't show unmerged entries in the staged section. */
5597 static const char *status_diff_index_argv[] = {
5598 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
5599 "--cached", "-M", "HEAD", NULL
5600 };
5602 static const char *status_diff_files_argv[] = {
5603 "git", "diff-files", "-z", NULL
5604 };
5606 static const char *status_list_other_argv[] = {
5607 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL
5608 };
5610 static const char *status_list_no_head_argv[] = {
5611 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
5612 };
5614 static const char *update_index_argv[] = {
5615 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
5616 };
5618 /* Restore the previous line number to stay in the context or select a
5619 * line with something that can be updated. */
5620 static void
5621 status_restore(struct view *view)
5622 {
5623 if (view->p_lineno >= view->lines)
5624 view->p_lineno = view->lines - 1;
5625 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
5626 view->p_lineno++;
5627 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
5628 view->p_lineno--;
5630 /* If the above fails, always skip the "On branch" line. */
5631 if (view->p_lineno < view->lines)
5632 view->lineno = view->p_lineno;
5633 else
5634 view->lineno = 1;
5636 if (view->lineno < view->offset)
5637 view->offset = view->lineno;
5638 else if (view->offset + view->height <= view->lineno)
5639 view->offset = view->lineno - view->height + 1;
5641 view->p_restore = FALSE;
5642 }
5644 static void
5645 status_update_onbranch(void)
5646 {
5647 static const char *paths[][2] = {
5648 { "rebase-apply/rebasing", "Rebasing" },
5649 { "rebase-apply/applying", "Applying mailbox" },
5650 { "rebase-apply/", "Rebasing mailbox" },
5651 { "rebase-merge/interactive", "Interactive rebase" },
5652 { "rebase-merge/", "Rebase merge" },
5653 { "MERGE_HEAD", "Merging" },
5654 { "BISECT_LOG", "Bisecting" },
5655 { "HEAD", "On branch" },
5656 };
5657 char buf[SIZEOF_STR];
5658 struct stat stat;
5659 int i;
5661 if (is_initial_commit()) {
5662 string_copy(status_onbranch, "Initial commit");
5663 return;
5664 }
5666 for (i = 0; i < ARRAY_SIZE(paths); i++) {
5667 char *head = opt_head;
5669 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
5670 lstat(buf, &stat) < 0)
5671 continue;
5673 if (!*opt_head) {
5674 struct io io = {};
5676 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
5677 io_read_buf(&io, buf, sizeof(buf))) {
5678 head = buf;
5679 if (!prefixcmp(head, "refs/heads/"))
5680 head += STRING_SIZE("refs/heads/");
5681 }
5682 }
5684 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
5685 string_copy(status_onbranch, opt_head);
5686 return;
5687 }
5689 string_copy(status_onbranch, "Not currently on any branch");
5690 }
5692 /* First parse staged info using git-diff-index(1), then parse unstaged
5693 * info using git-diff-files(1), and finally untracked files using
5694 * git-ls-files(1). */
5695 static bool
5696 status_open(struct view *view)
5697 {
5698 reset_view(view);
5700 add_line_data(view, NULL, LINE_STAT_HEAD);
5701 status_update_onbranch();
5703 io_run_bg(update_index_argv);
5705 if (is_initial_commit()) {
5706 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5707 return FALSE;
5708 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5709 return FALSE;
5710 }
5712 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5713 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5714 return FALSE;
5716 /* Restore the exact position or use the specialized restore
5717 * mode? */
5718 if (!view->p_restore)
5719 status_restore(view);
5720 return TRUE;
5721 }
5723 static bool
5724 status_draw(struct view *view, struct line *line, unsigned int lineno)
5725 {
5726 struct status *status = line->data;
5727 enum line_type type;
5728 const char *text;
5730 if (!status) {
5731 switch (line->type) {
5732 case LINE_STAT_STAGED:
5733 type = LINE_STAT_SECTION;
5734 text = "Changes to be committed:";
5735 break;
5737 case LINE_STAT_UNSTAGED:
5738 type = LINE_STAT_SECTION;
5739 text = "Changed but not updated:";
5740 break;
5742 case LINE_STAT_UNTRACKED:
5743 type = LINE_STAT_SECTION;
5744 text = "Untracked files:";
5745 break;
5747 case LINE_STAT_NONE:
5748 type = LINE_DEFAULT;
5749 text = " (no files)";
5750 break;
5752 case LINE_STAT_HEAD:
5753 type = LINE_STAT_HEAD;
5754 text = status_onbranch;
5755 break;
5757 default:
5758 return FALSE;
5759 }
5760 } else {
5761 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5763 buf[0] = status->status;
5764 if (draw_text(view, line->type, buf, TRUE))
5765 return TRUE;
5766 type = LINE_DEFAULT;
5767 text = status->new.name;
5768 }
5770 draw_text(view, type, text, TRUE);
5771 return TRUE;
5772 }
5774 static enum request
5775 status_load_error(struct view *view, struct view *stage, const char *path)
5776 {
5777 if (displayed_views() == 2 || display[current_view] != view)
5778 maximize_view(view);
5779 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5780 return REQ_NONE;
5781 }
5783 static enum request
5784 status_enter(struct view *view, struct line *line)
5785 {
5786 struct status *status = line->data;
5787 const char *oldpath = status ? status->old.name : NULL;
5788 /* Diffs for unmerged entries are empty when passing the new
5789 * path, so leave it empty. */
5790 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5791 const char *info;
5792 enum open_flags split;
5793 struct view *stage = VIEW(REQ_VIEW_STAGE);
5795 if (line->type == LINE_STAT_NONE ||
5796 (!status && line[1].type == LINE_STAT_NONE)) {
5797 report("No file to diff");
5798 return REQ_NONE;
5799 }
5801 switch (line->type) {
5802 case LINE_STAT_STAGED:
5803 if (is_initial_commit()) {
5804 const char *no_head_diff_argv[] = {
5805 "git", "diff", "--no-color", "--patch-with-stat",
5806 "--", "/dev/null", newpath, NULL
5807 };
5809 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5810 return status_load_error(view, stage, newpath);
5811 } else {
5812 const char *index_show_argv[] = {
5813 "git", "diff-index", "--root", "--patch-with-stat",
5814 "-C", "-M", "--cached", "HEAD", "--",
5815 oldpath, newpath, NULL
5816 };
5818 if (!prepare_update(stage, index_show_argv, opt_cdup))
5819 return status_load_error(view, stage, newpath);
5820 }
5822 if (status)
5823 info = "Staged changes to %s";
5824 else
5825 info = "Staged changes";
5826 break;
5828 case LINE_STAT_UNSTAGED:
5829 {
5830 const char *files_show_argv[] = {
5831 "git", "diff-files", "--root", "--patch-with-stat",
5832 "-C", "-M", "--", oldpath, newpath, NULL
5833 };
5835 if (!prepare_update(stage, files_show_argv, opt_cdup))
5836 return status_load_error(view, stage, newpath);
5837 if (status)
5838 info = "Unstaged changes to %s";
5839 else
5840 info = "Unstaged changes";
5841 break;
5842 }
5843 case LINE_STAT_UNTRACKED:
5844 if (!newpath) {
5845 report("No file to show");
5846 return REQ_NONE;
5847 }
5849 if (!suffixcmp(status->new.name, -1, "/")) {
5850 report("Cannot display a directory");
5851 return REQ_NONE;
5852 }
5854 if (!prepare_update_file(stage, newpath))
5855 return status_load_error(view, stage, newpath);
5856 info = "Untracked file %s";
5857 break;
5859 case LINE_STAT_HEAD:
5860 return REQ_NONE;
5862 default:
5863 die("line type %d not handled in switch", line->type);
5864 }
5866 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5867 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5868 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5869 if (status) {
5870 stage_status = *status;
5871 } else {
5872 memset(&stage_status, 0, sizeof(stage_status));
5873 }
5875 stage_line_type = line->type;
5876 stage_chunks = 0;
5877 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5878 }
5880 return REQ_NONE;
5881 }
5883 static bool
5884 status_exists(struct status *status, enum line_type type)
5885 {
5886 struct view *view = VIEW(REQ_VIEW_STATUS);
5887 unsigned long lineno;
5889 for (lineno = 0; lineno < view->lines; lineno++) {
5890 struct line *line = &view->line[lineno];
5891 struct status *pos = line->data;
5893 if (line->type != type)
5894 continue;
5895 if (!pos && (!status || !status->status) && line[1].data) {
5896 select_view_line(view, lineno);
5897 return TRUE;
5898 }
5899 if (pos && !strcmp(status->new.name, pos->new.name)) {
5900 select_view_line(view, lineno);
5901 return TRUE;
5902 }
5903 }
5905 return FALSE;
5906 }
5909 static bool
5910 status_update_prepare(struct io *io, enum line_type type)
5911 {
5912 const char *staged_argv[] = {
5913 "git", "update-index", "-z", "--index-info", NULL
5914 };
5915 const char *others_argv[] = {
5916 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5917 };
5919 switch (type) {
5920 case LINE_STAT_STAGED:
5921 return io_run(io, staged_argv, opt_cdup, IO_WR);
5923 case LINE_STAT_UNSTAGED:
5924 case LINE_STAT_UNTRACKED:
5925 return io_run(io, others_argv, opt_cdup, IO_WR);
5927 default:
5928 die("line type %d not handled in switch", type);
5929 return FALSE;
5930 }
5931 }
5933 static bool
5934 status_update_write(struct io *io, struct status *status, enum line_type type)
5935 {
5936 char buf[SIZEOF_STR];
5937 size_t bufsize = 0;
5939 switch (type) {
5940 case LINE_STAT_STAGED:
5941 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5942 status->old.mode,
5943 status->old.rev,
5944 status->old.name, 0))
5945 return FALSE;
5946 break;
5948 case LINE_STAT_UNSTAGED:
5949 case LINE_STAT_UNTRACKED:
5950 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5951 return FALSE;
5952 break;
5954 default:
5955 die("line type %d not handled in switch", type);
5956 }
5958 return io_write(io, buf, bufsize);
5959 }
5961 static bool
5962 status_update_file(struct status *status, enum line_type type)
5963 {
5964 struct io io = {};
5965 bool result;
5967 if (!status_update_prepare(&io, type))
5968 return FALSE;
5970 result = status_update_write(&io, status, type);
5971 return io_done(&io) && result;
5972 }
5974 static bool
5975 status_update_files(struct view *view, struct line *line)
5976 {
5977 char buf[sizeof(view->ref)];
5978 struct io io = {};
5979 bool result = TRUE;
5980 struct line *pos = view->line + view->lines;
5981 int files = 0;
5982 int file, done;
5983 int cursor_y = -1, cursor_x = -1;
5985 if (!status_update_prepare(&io, line->type))
5986 return FALSE;
5988 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5989 files++;
5991 string_copy(buf, view->ref);
5992 getsyx(cursor_y, cursor_x);
5993 for (file = 0, done = 5; result && file < files; line++, file++) {
5994 int almost_done = file * 100 / files;
5996 if (almost_done > done) {
5997 done = almost_done;
5998 string_format(view->ref, "updating file %u of %u (%d%% done)",
5999 file, files, done);
6000 update_view_title(view);
6001 setsyx(cursor_y, cursor_x);
6002 doupdate();
6003 }
6004 result = status_update_write(&io, line->data, line->type);
6005 }
6006 string_copy(view->ref, buf);
6008 return io_done(&io) && result;
6009 }
6011 static bool
6012 status_update(struct view *view)
6013 {
6014 struct line *line = &view->line[view->lineno];
6016 assert(view->lines);
6018 if (!line->data) {
6019 /* This should work even for the "On branch" line. */
6020 if (line < view->line + view->lines && !line[1].data) {
6021 report("Nothing to update");
6022 return FALSE;
6023 }
6025 if (!status_update_files(view, line + 1)) {
6026 report("Failed to update file status");
6027 return FALSE;
6028 }
6030 } else if (!status_update_file(line->data, line->type)) {
6031 report("Failed to update file status");
6032 return FALSE;
6033 }
6035 return TRUE;
6036 }
6038 static bool
6039 status_revert(struct status *status, enum line_type type, bool has_none)
6040 {
6041 if (!status || type != LINE_STAT_UNSTAGED) {
6042 if (type == LINE_STAT_STAGED) {
6043 report("Cannot revert changes to staged files");
6044 } else if (type == LINE_STAT_UNTRACKED) {
6045 report("Cannot revert changes to untracked files");
6046 } else if (has_none) {
6047 report("Nothing to revert");
6048 } else {
6049 report("Cannot revert changes to multiple files");
6050 }
6052 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
6053 char mode[10] = "100644";
6054 const char *reset_argv[] = {
6055 "git", "update-index", "--cacheinfo", mode,
6056 status->old.rev, status->old.name, NULL
6057 };
6058 const char *checkout_argv[] = {
6059 "git", "checkout", "--", status->old.name, NULL
6060 };
6062 if (status->status == 'U') {
6063 string_format(mode, "%5o", status->old.mode);
6065 if (status->old.mode == 0 && status->new.mode == 0) {
6066 reset_argv[2] = "--force-remove";
6067 reset_argv[3] = status->old.name;
6068 reset_argv[4] = NULL;
6069 }
6071 if (!io_run_fg(reset_argv, opt_cdup))
6072 return FALSE;
6073 if (status->old.mode == 0 && status->new.mode == 0)
6074 return TRUE;
6075 }
6077 return io_run_fg(checkout_argv, opt_cdup);
6078 }
6080 return FALSE;
6081 }
6083 static enum request
6084 status_request(struct view *view, enum request request, struct line *line)
6085 {
6086 struct status *status = line->data;
6088 switch (request) {
6089 case REQ_STATUS_UPDATE:
6090 if (!status_update(view))
6091 return REQ_NONE;
6092 break;
6094 case REQ_STATUS_REVERT:
6095 if (!status_revert(status, line->type, status_has_none(view, line)))
6096 return REQ_NONE;
6097 break;
6099 case REQ_STATUS_MERGE:
6100 if (!status || status->status != 'U') {
6101 report("Merging only possible for files with unmerged status ('U').");
6102 return REQ_NONE;
6103 }
6104 open_mergetool(status->new.name);
6105 break;
6107 case REQ_EDIT:
6108 if (!status)
6109 return request;
6110 if (status->status == 'D') {
6111 report("File has been deleted.");
6112 return REQ_NONE;
6113 }
6115 open_editor(status->new.name);
6116 break;
6118 case REQ_VIEW_BLAME:
6119 if (status)
6120 opt_ref[0] = 0;
6121 return request;
6123 case REQ_ENTER:
6124 /* After returning the status view has been split to
6125 * show the stage view. No further reloading is
6126 * necessary. */
6127 return status_enter(view, line);
6129 case REQ_REFRESH:
6130 /* Simply reload the view. */
6131 break;
6133 default:
6134 return request;
6135 }
6137 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
6139 return REQ_NONE;
6140 }
6142 static void
6143 status_select(struct view *view, struct line *line)
6144 {
6145 struct status *status = line->data;
6146 char file[SIZEOF_STR] = "all files";
6147 const char *text;
6148 const char *key;
6150 if (status && !string_format(file, "'%s'", status->new.name))
6151 return;
6153 if (!status && line[1].type == LINE_STAT_NONE)
6154 line++;
6156 switch (line->type) {
6157 case LINE_STAT_STAGED:
6158 text = "Press %s to unstage %s for commit";
6159 break;
6161 case LINE_STAT_UNSTAGED:
6162 text = "Press %s to stage %s for commit";
6163 break;
6165 case LINE_STAT_UNTRACKED:
6166 text = "Press %s to stage %s for addition";
6167 break;
6169 case LINE_STAT_HEAD:
6170 case LINE_STAT_NONE:
6171 text = "Nothing to update";
6172 break;
6174 default:
6175 die("line type %d not handled in switch", line->type);
6176 }
6178 if (status && status->status == 'U') {
6179 text = "Press %s to resolve conflict in %s";
6180 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
6182 } else {
6183 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
6184 }
6186 string_format(view->ref, text, key, file);
6187 if (status)
6188 string_copy(opt_file, status->new.name);
6189 }
6191 static bool
6192 status_grep(struct view *view, struct line *line)
6193 {
6194 struct status *status = line->data;
6196 if (status) {
6197 const char buf[2] = { status->status, 0 };
6198 const char *text[] = { status->new.name, buf, NULL };
6200 return grep_text(view, text);
6201 }
6203 return FALSE;
6204 }
6206 static struct view_ops status_ops = {
6207 "file",
6208 NULL,
6209 status_open,
6210 NULL,
6211 status_draw,
6212 status_request,
6213 status_grep,
6214 status_select,
6215 };
6218 static bool
6219 stage_diff_write(struct io *io, struct line *line, struct line *end)
6220 {
6221 while (line < end) {
6222 if (!io_write(io, line->data, strlen(line->data)) ||
6223 !io_write(io, "\n", 1))
6224 return FALSE;
6225 line++;
6226 if (line->type == LINE_DIFF_CHUNK ||
6227 line->type == LINE_DIFF_HEADER)
6228 break;
6229 }
6231 return TRUE;
6232 }
6234 static struct line *
6235 stage_diff_find(struct view *view, struct line *line, enum line_type type)
6236 {
6237 for (; view->line < line; line--)
6238 if (line->type == type)
6239 return line;
6241 return NULL;
6242 }
6244 static bool
6245 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
6246 {
6247 const char *apply_argv[SIZEOF_ARG] = {
6248 "git", "apply", "--whitespace=nowarn", NULL
6249 };
6250 struct line *diff_hdr;
6251 struct io io = {};
6252 int argc = 3;
6254 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
6255 if (!diff_hdr)
6256 return FALSE;
6258 if (!revert)
6259 apply_argv[argc++] = "--cached";
6260 if (revert || stage_line_type == LINE_STAT_STAGED)
6261 apply_argv[argc++] = "-R";
6262 apply_argv[argc++] = "-";
6263 apply_argv[argc++] = NULL;
6264 if (!io_run(&io, apply_argv, opt_cdup, IO_WR))
6265 return FALSE;
6267 if (!stage_diff_write(&io, diff_hdr, chunk) ||
6268 !stage_diff_write(&io, chunk, view->line + view->lines))
6269 chunk = NULL;
6271 io_done(&io);
6272 io_run_bg(update_index_argv);
6274 return chunk ? TRUE : FALSE;
6275 }
6277 static bool
6278 stage_update(struct view *view, struct line *line)
6279 {
6280 struct line *chunk = NULL;
6282 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
6283 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
6285 if (chunk) {
6286 if (!stage_apply_chunk(view, chunk, FALSE)) {
6287 report("Failed to apply chunk");
6288 return FALSE;
6289 }
6291 } else if (!stage_status.status) {
6292 view = VIEW(REQ_VIEW_STATUS);
6294 for (line = view->line; line < view->line + view->lines; line++)
6295 if (line->type == stage_line_type)
6296 break;
6298 if (!status_update_files(view, line + 1)) {
6299 report("Failed to update files");
6300 return FALSE;
6301 }
6303 } else if (!status_update_file(&stage_status, stage_line_type)) {
6304 report("Failed to update file");
6305 return FALSE;
6306 }
6308 return TRUE;
6309 }
6311 static bool
6312 stage_revert(struct view *view, struct line *line)
6313 {
6314 struct line *chunk = NULL;
6316 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
6317 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
6319 if (chunk) {
6320 if (!prompt_yesno("Are you sure you want to revert changes?"))
6321 return FALSE;
6323 if (!stage_apply_chunk(view, chunk, TRUE)) {
6324 report("Failed to revert chunk");
6325 return FALSE;
6326 }
6327 return TRUE;
6329 } else {
6330 return status_revert(stage_status.status ? &stage_status : NULL,
6331 stage_line_type, FALSE);
6332 }
6333 }
6336 static void
6337 stage_next(struct view *view, struct line *line)
6338 {
6339 int i;
6341 if (!stage_chunks) {
6342 for (line = view->line; line < view->line + view->lines; line++) {
6343 if (line->type != LINE_DIFF_CHUNK)
6344 continue;
6346 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
6347 report("Allocation failure");
6348 return;
6349 }
6351 stage_chunk[stage_chunks++] = line - view->line;
6352 }
6353 }
6355 for (i = 0; i < stage_chunks; i++) {
6356 if (stage_chunk[i] > view->lineno) {
6357 do_scroll_view(view, stage_chunk[i] - view->lineno);
6358 report("Chunk %d of %d", i + 1, stage_chunks);
6359 return;
6360 }
6361 }
6363 report("No next chunk found");
6364 }
6366 static enum request
6367 stage_request(struct view *view, enum request request, struct line *line)
6368 {
6369 switch (request) {
6370 case REQ_STATUS_UPDATE:
6371 if (!stage_update(view, line))
6372 return REQ_NONE;
6373 break;
6375 case REQ_STATUS_REVERT:
6376 if (!stage_revert(view, line))
6377 return REQ_NONE;
6378 break;
6380 case REQ_STAGE_NEXT:
6381 if (stage_line_type == LINE_STAT_UNTRACKED) {
6382 report("File is untracked; press %s to add",
6383 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
6384 return REQ_NONE;
6385 }
6386 stage_next(view, line);
6387 return REQ_NONE;
6389 case REQ_EDIT:
6390 if (!stage_status.new.name[0])
6391 return request;
6392 if (stage_status.status == 'D') {
6393 report("File has been deleted.");
6394 return REQ_NONE;
6395 }
6397 open_editor(stage_status.new.name);
6398 break;
6400 case REQ_REFRESH:
6401 /* Reload everything ... */
6402 break;
6404 case REQ_VIEW_BLAME:
6405 if (stage_status.new.name[0]) {
6406 string_copy(opt_file, stage_status.new.name);
6407 opt_ref[0] = 0;
6408 }
6409 return request;
6411 case REQ_ENTER:
6412 return pager_request(view, request, line);
6414 default:
6415 return request;
6416 }
6418 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
6419 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
6421 /* Check whether the staged entry still exists, and close the
6422 * stage view if it doesn't. */
6423 if (!status_exists(&stage_status, stage_line_type)) {
6424 status_restore(VIEW(REQ_VIEW_STATUS));
6425 return REQ_VIEW_CLOSE;
6426 }
6428 if (stage_line_type == LINE_STAT_UNTRACKED) {
6429 if (!suffixcmp(stage_status.new.name, -1, "/")) {
6430 report("Cannot display a directory");
6431 return REQ_NONE;
6432 }
6434 if (!prepare_update_file(view, stage_status.new.name)) {
6435 report("Failed to open file: %s", strerror(errno));
6436 return REQ_NONE;
6437 }
6438 }
6439 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
6441 return REQ_NONE;
6442 }
6444 static struct view_ops stage_ops = {
6445 "line",
6446 NULL,
6447 NULL,
6448 pager_read,
6449 pager_draw,
6450 stage_request,
6451 pager_grep,
6452 pager_select,
6453 };
6456 /*
6457 * Revision graph
6458 */
6460 struct commit {
6461 char id[SIZEOF_REV]; /* SHA1 ID. */
6462 char title[128]; /* First line of the commit message. */
6463 const char *author; /* Author of the commit. */
6464 struct time time; /* Date from the author ident. */
6465 struct ref_list *refs; /* Repository references. */
6466 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
6467 size_t graph_size; /* The width of the graph array. */
6468 bool has_parents; /* Rewritten --parents seen. */
6469 };
6471 /* Size of rev graph with no "padding" columns */
6472 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
6474 struct rev_graph {
6475 struct rev_graph *prev, *next, *parents;
6476 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
6477 size_t size;
6478 struct commit *commit;
6479 size_t pos;
6480 unsigned int boundary:1;
6481 };
6483 /* Parents of the commit being visualized. */
6484 static struct rev_graph graph_parents[4];
6486 /* The current stack of revisions on the graph. */
6487 static struct rev_graph graph_stacks[4] = {
6488 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
6489 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
6490 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
6491 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
6492 };
6494 static inline bool
6495 graph_parent_is_merge(struct rev_graph *graph)
6496 {
6497 return graph->parents->size > 1;
6498 }
6500 static inline void
6501 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
6502 {
6503 struct commit *commit = graph->commit;
6505 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
6506 commit->graph[commit->graph_size++] = symbol;
6507 }
6509 static void
6510 clear_rev_graph(struct rev_graph *graph)
6511 {
6512 graph->boundary = 0;
6513 graph->size = graph->pos = 0;
6514 graph->commit = NULL;
6515 memset(graph->parents, 0, sizeof(*graph->parents));
6516 }
6518 static void
6519 done_rev_graph(struct rev_graph *graph)
6520 {
6521 if (graph_parent_is_merge(graph) &&
6522 graph->pos < graph->size - 1 &&
6523 graph->next->size == graph->size + graph->parents->size - 1) {
6524 size_t i = graph->pos + graph->parents->size - 1;
6526 graph->commit->graph_size = i * 2;
6527 while (i < graph->next->size - 1) {
6528 append_to_rev_graph(graph, ' ');
6529 append_to_rev_graph(graph, '\\');
6530 i++;
6531 }
6532 }
6534 clear_rev_graph(graph);
6535 }
6537 static void
6538 push_rev_graph(struct rev_graph *graph, const char *parent)
6539 {
6540 int i;
6542 /* "Collapse" duplicate parents lines.
6543 *
6544 * FIXME: This needs to also update update the drawn graph but
6545 * for now it just serves as a method for pruning graph lines. */
6546 for (i = 0; i < graph->size; i++)
6547 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
6548 return;
6550 if (graph->size < SIZEOF_REVITEMS) {
6551 string_copy_rev(graph->rev[graph->size++], parent);
6552 }
6553 }
6555 static chtype
6556 get_rev_graph_symbol(struct rev_graph *graph)
6557 {
6558 chtype symbol;
6560 if (graph->boundary)
6561 symbol = REVGRAPH_BOUND;
6562 else if (graph->parents->size == 0)
6563 symbol = REVGRAPH_INIT;
6564 else if (graph_parent_is_merge(graph))
6565 symbol = REVGRAPH_MERGE;
6566 else if (graph->pos >= graph->size)
6567 symbol = REVGRAPH_BRANCH;
6568 else
6569 symbol = REVGRAPH_COMMIT;
6571 return symbol;
6572 }
6574 static void
6575 draw_rev_graph(struct rev_graph *graph)
6576 {
6577 struct rev_filler {
6578 chtype separator, line;
6579 };
6580 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
6581 static struct rev_filler fillers[] = {
6582 { ' ', '|' },
6583 { '`', '.' },
6584 { '\'', ' ' },
6585 { '/', ' ' },
6586 };
6587 chtype symbol = get_rev_graph_symbol(graph);
6588 struct rev_filler *filler;
6589 size_t i;
6591 fillers[DEFAULT].line = opt_line_graphics ? ACS_VLINE : '|';
6592 filler = &fillers[DEFAULT];
6594 for (i = 0; i < graph->pos; i++) {
6595 append_to_rev_graph(graph, filler->line);
6596 if (graph_parent_is_merge(graph->prev) &&
6597 graph->prev->pos == i)
6598 filler = &fillers[RSHARP];
6600 append_to_rev_graph(graph, filler->separator);
6601 }
6603 /* Place the symbol for this revision. */
6604 append_to_rev_graph(graph, symbol);
6606 if (graph->prev->size > graph->size)
6607 filler = &fillers[RDIAG];
6608 else
6609 filler = &fillers[DEFAULT];
6611 i++;
6613 for (; i < graph->size; i++) {
6614 append_to_rev_graph(graph, filler->separator);
6615 append_to_rev_graph(graph, filler->line);
6616 if (graph_parent_is_merge(graph->prev) &&
6617 i < graph->prev->pos + graph->parents->size)
6618 filler = &fillers[RSHARP];
6619 if (graph->prev->size > graph->size)
6620 filler = &fillers[LDIAG];
6621 }
6623 if (graph->prev->size > graph->size) {
6624 append_to_rev_graph(graph, filler->separator);
6625 if (filler->line != ' ')
6626 append_to_rev_graph(graph, filler->line);
6627 }
6628 }
6630 /* Prepare the next rev graph */
6631 static void
6632 prepare_rev_graph(struct rev_graph *graph)
6633 {
6634 size_t i;
6636 /* First, traverse all lines of revisions up to the active one. */
6637 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
6638 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
6639 break;
6641 push_rev_graph(graph->next, graph->rev[graph->pos]);
6642 }
6644 /* Interleave the new revision parent(s). */
6645 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
6646 push_rev_graph(graph->next, graph->parents->rev[i]);
6648 /* Lastly, put any remaining revisions. */
6649 for (i = graph->pos + 1; i < graph->size; i++)
6650 push_rev_graph(graph->next, graph->rev[i]);
6651 }
6653 static void
6654 update_rev_graph(struct view *view, struct rev_graph *graph)
6655 {
6656 /* If this is the finalizing update ... */
6657 if (graph->commit)
6658 prepare_rev_graph(graph);
6660 /* Graph visualization needs a one rev look-ahead,
6661 * so the first update doesn't visualize anything. */
6662 if (!graph->prev->commit)
6663 return;
6665 if (view->lines > 2)
6666 view->line[view->lines - 3].dirty = 1;
6667 if (view->lines > 1)
6668 view->line[view->lines - 2].dirty = 1;
6669 draw_rev_graph(graph->prev);
6670 done_rev_graph(graph->prev->prev);
6671 }
6674 /*
6675 * Main view backend
6676 */
6678 static const char *main_argv[SIZEOF_ARG] = {
6679 "git", "log", "--no-color", "--pretty=raw", "--parents",
6680 "--topo-order", "%(head)", NULL
6681 };
6683 static bool
6684 main_draw(struct view *view, struct line *line, unsigned int lineno)
6685 {
6686 struct commit *commit = line->data;
6688 if (!commit->author)
6689 return FALSE;
6691 if (opt_date && draw_date(view, &commit->time))
6692 return TRUE;
6694 if (opt_author && draw_author(view, commit->author))
6695 return TRUE;
6697 if (opt_rev_graph && commit->graph_size &&
6698 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
6699 return TRUE;
6701 if (opt_show_refs && commit->refs) {
6702 size_t i;
6704 for (i = 0; i < commit->refs->size; i++) {
6705 struct ref *ref = commit->refs->refs[i];
6706 enum line_type type;
6708 if (ref->head)
6709 type = LINE_MAIN_HEAD;
6710 else if (ref->ltag)
6711 type = LINE_MAIN_LOCAL_TAG;
6712 else if (ref->tag)
6713 type = LINE_MAIN_TAG;
6714 else if (ref->tracked)
6715 type = LINE_MAIN_TRACKED;
6716 else if (ref->remote)
6717 type = LINE_MAIN_REMOTE;
6718 else
6719 type = LINE_MAIN_REF;
6721 if (draw_text(view, type, "[", TRUE) ||
6722 draw_text(view, type, ref->name, TRUE) ||
6723 draw_text(view, type, "]", TRUE))
6724 return TRUE;
6726 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
6727 return TRUE;
6728 }
6729 }
6731 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
6732 return TRUE;
6733 }
6735 /* Reads git log --pretty=raw output and parses it into the commit struct. */
6736 static bool
6737 main_read(struct view *view, char *line)
6738 {
6739 static struct rev_graph *graph = graph_stacks;
6740 enum line_type type;
6741 struct commit *commit;
6743 if (!line) {
6744 int i;
6746 if (!view->lines && !view->parent)
6747 die("No revisions match the given arguments.");
6748 if (view->lines > 0) {
6749 commit = view->line[view->lines - 1].data;
6750 view->line[view->lines - 1].dirty = 1;
6751 if (!commit->author) {
6752 view->lines--;
6753 free(commit);
6754 graph->commit = NULL;
6755 }
6756 }
6757 update_rev_graph(view, graph);
6759 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
6760 clear_rev_graph(&graph_stacks[i]);
6761 return TRUE;
6762 }
6764 type = get_line_type(line);
6765 if (type == LINE_COMMIT) {
6766 commit = calloc(1, sizeof(struct commit));
6767 if (!commit)
6768 return FALSE;
6770 line += STRING_SIZE("commit ");
6771 if (*line == '-') {
6772 graph->boundary = 1;
6773 line++;
6774 }
6776 string_copy_rev(commit->id, line);
6777 commit->refs = get_ref_list(commit->id);
6778 graph->commit = commit;
6779 add_line_data(view, commit, LINE_MAIN_COMMIT);
6781 while ((line = strchr(line, ' '))) {
6782 line++;
6783 push_rev_graph(graph->parents, line);
6784 commit->has_parents = TRUE;
6785 }
6786 return TRUE;
6787 }
6789 if (!view->lines)
6790 return TRUE;
6791 commit = view->line[view->lines - 1].data;
6793 switch (type) {
6794 case LINE_PARENT:
6795 if (commit->has_parents)
6796 break;
6797 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
6798 break;
6800 case LINE_AUTHOR:
6801 parse_author_line(line + STRING_SIZE("author "),
6802 &commit->author, &commit->time);
6803 update_rev_graph(view, graph);
6804 graph = graph->next;
6805 break;
6807 default:
6808 /* Fill in the commit title if it has not already been set. */
6809 if (commit->title[0])
6810 break;
6812 /* Require titles to start with a non-space character at the
6813 * offset used by git log. */
6814 if (strncmp(line, " ", 4))
6815 break;
6816 line += 4;
6817 /* Well, if the title starts with a whitespace character,
6818 * try to be forgiving. Otherwise we end up with no title. */
6819 while (isspace(*line))
6820 line++;
6821 if (*line == '\0')
6822 break;
6823 /* FIXME: More graceful handling of titles; append "..." to
6824 * shortened titles, etc. */
6826 string_expand(commit->title, sizeof(commit->title), line, 1);
6827 view->line[view->lines - 1].dirty = 1;
6828 }
6830 return TRUE;
6831 }
6833 static enum request
6834 main_request(struct view *view, enum request request, struct line *line)
6835 {
6836 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
6838 switch (request) {
6839 case REQ_ENTER:
6840 open_view(view, REQ_VIEW_DIFF, flags);
6841 break;
6842 case REQ_REFRESH:
6843 load_refs();
6844 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6845 break;
6846 default:
6847 return request;
6848 }
6850 return REQ_NONE;
6851 }
6853 static bool
6854 grep_refs(struct ref_list *list, regex_t *regex)
6855 {
6856 regmatch_t pmatch;
6857 size_t i;
6859 if (!opt_show_refs || !list)
6860 return FALSE;
6862 for (i = 0; i < list->size; i++) {
6863 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6864 return TRUE;
6865 }
6867 return FALSE;
6868 }
6870 static bool
6871 main_grep(struct view *view, struct line *line)
6872 {
6873 struct commit *commit = line->data;
6874 const char *text[] = {
6875 commit->title,
6876 opt_author ? commit->author : "",
6877 mkdate(&commit->time, opt_date),
6878 NULL
6879 };
6881 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6882 }
6884 static void
6885 main_select(struct view *view, struct line *line)
6886 {
6887 struct commit *commit = line->data;
6889 string_copy_rev(view->ref, commit->id);
6890 string_copy_rev(ref_commit, view->ref);
6891 }
6893 static struct view_ops main_ops = {
6894 "commit",
6895 main_argv,
6896 NULL,
6897 main_read,
6898 main_draw,
6899 main_request,
6900 main_grep,
6901 main_select,
6902 };
6905 /*
6906 * Status management
6907 */
6909 /* Whether or not the curses interface has been initialized. */
6910 static bool cursed = FALSE;
6912 /* Terminal hacks and workarounds. */
6913 static bool use_scroll_redrawwin;
6914 static bool use_scroll_status_wclear;
6916 /* The status window is used for polling keystrokes. */
6917 static WINDOW *status_win;
6919 /* Reading from the prompt? */
6920 static bool input_mode = FALSE;
6922 static bool status_empty = FALSE;
6924 /* Update status and title window. */
6925 static void
6926 report(const char *msg, ...)
6927 {
6928 struct view *view = display[current_view];
6930 if (input_mode)
6931 return;
6933 if (!view) {
6934 char buf[SIZEOF_STR];
6935 va_list args;
6937 va_start(args, msg);
6938 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6939 buf[sizeof(buf) - 1] = 0;
6940 buf[sizeof(buf) - 2] = '.';
6941 buf[sizeof(buf) - 3] = '.';
6942 buf[sizeof(buf) - 4] = '.';
6943 }
6944 va_end(args);
6945 die("%s", buf);
6946 }
6948 if (!status_empty || *msg) {
6949 va_list args;
6951 va_start(args, msg);
6953 wmove(status_win, 0, 0);
6954 if (view->has_scrolled && use_scroll_status_wclear)
6955 wclear(status_win);
6956 if (*msg) {
6957 vwprintw(status_win, msg, args);
6958 status_empty = FALSE;
6959 } else {
6960 status_empty = TRUE;
6961 }
6962 wclrtoeol(status_win);
6963 wnoutrefresh(status_win);
6965 va_end(args);
6966 }
6968 update_view_title(view);
6969 }
6971 static void
6972 init_display(void)
6973 {
6974 const char *term;
6975 int x, y;
6977 /* Initialize the curses library */
6978 if (isatty(STDIN_FILENO)) {
6979 cursed = !!initscr();
6980 opt_tty = stdin;
6981 } else {
6982 /* Leave stdin and stdout alone when acting as a pager. */
6983 opt_tty = fopen("/dev/tty", "r+");
6984 if (!opt_tty)
6985 die("Failed to open /dev/tty");
6986 cursed = !!newterm(NULL, opt_tty, opt_tty);
6987 }
6989 if (!cursed)
6990 die("Failed to initialize curses");
6992 nonl(); /* Disable conversion and detect newlines from input. */
6993 cbreak(); /* Take input chars one at a time, no wait for \n */
6994 noecho(); /* Don't echo input */
6995 leaveok(stdscr, FALSE);
6997 if (has_colors())
6998 init_colors();
7000 getmaxyx(stdscr, y, x);
7001 status_win = newwin(1, 0, y - 1, 0);
7002 if (!status_win)
7003 die("Failed to create status window");
7005 /* Enable keyboard mapping */
7006 keypad(status_win, TRUE);
7007 wbkgdset(status_win, get_line_attr(LINE_STATUS));
7009 TABSIZE = opt_tab_size;
7011 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
7012 if (term && !strcmp(term, "gnome-terminal")) {
7013 /* In the gnome-terminal-emulator, the message from
7014 * scrolling up one line when impossible followed by
7015 * scrolling down one line causes corruption of the
7016 * status line. This is fixed by calling wclear. */
7017 use_scroll_status_wclear = TRUE;
7018 use_scroll_redrawwin = FALSE;
7020 } else if (term && !strcmp(term, "xrvt-xpm")) {
7021 /* No problems with full optimizations in xrvt-(unicode)
7022 * and aterm. */
7023 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
7025 } else {
7026 /* When scrolling in (u)xterm the last line in the
7027 * scrolling direction will update slowly. */
7028 use_scroll_redrawwin = TRUE;
7029 use_scroll_status_wclear = FALSE;
7030 }
7031 }
7033 static int
7034 get_input(int prompt_position)
7035 {
7036 struct view *view;
7037 int i, key, cursor_y, cursor_x;
7038 bool loading = FALSE;
7040 if (prompt_position)
7041 input_mode = TRUE;
7043 while (TRUE) {
7044 foreach_view (view, i) {
7045 update_view(view);
7046 if (view_is_displayed(view) && view->has_scrolled &&
7047 use_scroll_redrawwin)
7048 redrawwin(view->win);
7049 view->has_scrolled = FALSE;
7050 if (view->pipe)
7051 loading = TRUE;
7052 }
7054 /* Update the cursor position. */
7055 if (prompt_position) {
7056 getbegyx(status_win, cursor_y, cursor_x);
7057 cursor_x = prompt_position;
7058 } else {
7059 view = display[current_view];
7060 getbegyx(view->win, cursor_y, cursor_x);
7061 cursor_x = view->width - 1;
7062 cursor_y += view->lineno - view->offset;
7063 }
7064 setsyx(cursor_y, cursor_x);
7066 /* Refresh, accept single keystroke of input */
7067 doupdate();
7068 nodelay(status_win, loading);
7069 key = wgetch(status_win);
7071 /* wgetch() with nodelay() enabled returns ERR when
7072 * there's no input. */
7073 if (key == ERR) {
7075 } else if (key == KEY_RESIZE) {
7076 int height, width;
7078 getmaxyx(stdscr, height, width);
7080 wresize(status_win, 1, width);
7081 mvwin(status_win, height - 1, 0);
7082 wnoutrefresh(status_win);
7083 resize_display();
7084 redraw_display(TRUE);
7086 } else {
7087 input_mode = FALSE;
7088 return key;
7089 }
7090 }
7091 }
7093 static char *
7094 prompt_input(const char *prompt, input_handler handler, void *data)
7095 {
7096 enum input_status status = INPUT_OK;
7097 static char buf[SIZEOF_STR];
7098 size_t pos = 0;
7100 buf[pos] = 0;
7102 while (status == INPUT_OK || status == INPUT_SKIP) {
7103 int key;
7105 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
7106 wclrtoeol(status_win);
7108 key = get_input(pos + 1);
7109 switch (key) {
7110 case KEY_RETURN:
7111 case KEY_ENTER:
7112 case '\n':
7113 status = pos ? INPUT_STOP : INPUT_CANCEL;
7114 break;
7116 case KEY_BACKSPACE:
7117 if (pos > 0)
7118 buf[--pos] = 0;
7119 else
7120 status = INPUT_CANCEL;
7121 break;
7123 case KEY_ESC:
7124 status = INPUT_CANCEL;
7125 break;
7127 default:
7128 if (pos >= sizeof(buf)) {
7129 report("Input string too long");
7130 return NULL;
7131 }
7133 status = handler(data, buf, key);
7134 if (status == INPUT_OK)
7135 buf[pos++] = (char) key;
7136 }
7137 }
7139 /* Clear the status window */
7140 status_empty = FALSE;
7141 report("");
7143 if (status == INPUT_CANCEL)
7144 return NULL;
7146 buf[pos++] = 0;
7148 return buf;
7149 }
7151 static enum input_status
7152 prompt_yesno_handler(void *data, char *buf, int c)
7153 {
7154 if (c == 'y' || c == 'Y')
7155 return INPUT_STOP;
7156 if (c == 'n' || c == 'N')
7157 return INPUT_CANCEL;
7158 return INPUT_SKIP;
7159 }
7161 static bool
7162 prompt_yesno(const char *prompt)
7163 {
7164 char prompt2[SIZEOF_STR];
7166 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
7167 return FALSE;
7169 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
7170 }
7172 static enum input_status
7173 read_prompt_handler(void *data, char *buf, int c)
7174 {
7175 return isprint(c) ? INPUT_OK : INPUT_SKIP;
7176 }
7178 static char *
7179 read_prompt(const char *prompt)
7180 {
7181 return prompt_input(prompt, read_prompt_handler, NULL);
7182 }
7184 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
7185 {
7186 enum input_status status = INPUT_OK;
7187 int size = 0;
7189 while (items[size].text)
7190 size++;
7192 while (status == INPUT_OK) {
7193 const struct menu_item *item = &items[*selected];
7194 int key;
7195 int i;
7197 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
7198 prompt, *selected + 1, size);
7199 if (item->hotkey)
7200 wprintw(status_win, "[%c] ", (char) item->hotkey);
7201 wprintw(status_win, "%s", item->text);
7202 wclrtoeol(status_win);
7204 key = get_input(COLS - 1);
7205 switch (key) {
7206 case KEY_RETURN:
7207 case KEY_ENTER:
7208 case '\n':
7209 status = INPUT_STOP;
7210 break;
7212 case KEY_LEFT:
7213 case KEY_UP:
7214 *selected = *selected - 1;
7215 if (*selected < 0)
7216 *selected = size - 1;
7217 break;
7219 case KEY_RIGHT:
7220 case KEY_DOWN:
7221 *selected = (*selected + 1) % size;
7222 break;
7224 case KEY_ESC:
7225 status = INPUT_CANCEL;
7226 break;
7228 default:
7229 for (i = 0; items[i].text; i++)
7230 if (items[i].hotkey == key) {
7231 *selected = i;
7232 status = INPUT_STOP;
7233 break;
7234 }
7235 }
7236 }
7238 /* Clear the status window */
7239 status_empty = FALSE;
7240 report("");
7242 return status != INPUT_CANCEL;
7243 }
7245 /*
7246 * Repository properties
7247 */
7249 static struct ref **refs = NULL;
7250 static size_t refs_size = 0;
7251 static struct ref *refs_head = NULL;
7253 static struct ref_list **ref_lists = NULL;
7254 static size_t ref_lists_size = 0;
7256 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
7257 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
7258 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
7260 static int
7261 compare_refs(const void *ref1_, const void *ref2_)
7262 {
7263 const struct ref *ref1 = *(const struct ref **)ref1_;
7264 const struct ref *ref2 = *(const struct ref **)ref2_;
7266 if (ref1->tag != ref2->tag)
7267 return ref2->tag - ref1->tag;
7268 if (ref1->ltag != ref2->ltag)
7269 return ref2->ltag - ref2->ltag;
7270 if (ref1->head != ref2->head)
7271 return ref2->head - ref1->head;
7272 if (ref1->tracked != ref2->tracked)
7273 return ref2->tracked - ref1->tracked;
7274 if (ref1->remote != ref2->remote)
7275 return ref2->remote - ref1->remote;
7276 return strcmp(ref1->name, ref2->name);
7277 }
7279 static void
7280 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
7281 {
7282 size_t i;
7284 for (i = 0; i < refs_size; i++)
7285 if (!visitor(data, refs[i]))
7286 break;
7287 }
7289 static struct ref *
7290 get_ref_head()
7291 {
7292 return refs_head;
7293 }
7295 static struct ref_list *
7296 get_ref_list(const char *id)
7297 {
7298 struct ref_list *list;
7299 size_t i;
7301 for (i = 0; i < ref_lists_size; i++)
7302 if (!strcmp(id, ref_lists[i]->id))
7303 return ref_lists[i];
7305 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
7306 return NULL;
7307 list = calloc(1, sizeof(*list));
7308 if (!list)
7309 return NULL;
7311 for (i = 0; i < refs_size; i++) {
7312 if (!strcmp(id, refs[i]->id) &&
7313 realloc_refs_list(&list->refs, list->size, 1))
7314 list->refs[list->size++] = refs[i];
7315 }
7317 if (!list->refs) {
7318 free(list);
7319 return NULL;
7320 }
7322 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
7323 ref_lists[ref_lists_size++] = list;
7324 return list;
7325 }
7327 static int
7328 read_ref(char *id, size_t idlen, char *name, size_t namelen)
7329 {
7330 struct ref *ref = NULL;
7331 bool tag = FALSE;
7332 bool ltag = FALSE;
7333 bool remote = FALSE;
7334 bool tracked = FALSE;
7335 bool head = FALSE;
7336 int from = 0, to = refs_size - 1;
7338 if (!prefixcmp(name, "refs/tags/")) {
7339 if (!suffixcmp(name, namelen, "^{}")) {
7340 namelen -= 3;
7341 name[namelen] = 0;
7342 } else {
7343 ltag = TRUE;
7344 }
7346 tag = TRUE;
7347 namelen -= STRING_SIZE("refs/tags/");
7348 name += STRING_SIZE("refs/tags/");
7350 } else if (!prefixcmp(name, "refs/remotes/")) {
7351 remote = TRUE;
7352 namelen -= STRING_SIZE("refs/remotes/");
7353 name += STRING_SIZE("refs/remotes/");
7354 tracked = !strcmp(opt_remote, name);
7356 } else if (!prefixcmp(name, "refs/heads/")) {
7357 namelen -= STRING_SIZE("refs/heads/");
7358 name += STRING_SIZE("refs/heads/");
7359 if (!strncmp(opt_head, name, namelen))
7360 return OK;
7362 } else if (!strcmp(name, "HEAD")) {
7363 head = TRUE;
7364 if (*opt_head) {
7365 namelen = strlen(opt_head);
7366 name = opt_head;
7367 }
7368 }
7370 /* If we are reloading or it's an annotated tag, replace the
7371 * previous SHA1 with the resolved commit id; relies on the fact
7372 * git-ls-remote lists the commit id of an annotated tag right
7373 * before the commit id it points to. */
7374 while (from <= to) {
7375 size_t pos = (to + from) / 2;
7376 int cmp = strcmp(name, refs[pos]->name);
7378 if (!cmp) {
7379 ref = refs[pos];
7380 break;
7381 }
7383 if (cmp < 0)
7384 to = pos - 1;
7385 else
7386 from = pos + 1;
7387 }
7389 if (!ref) {
7390 if (!realloc_refs(&refs, refs_size, 1))
7391 return ERR;
7392 ref = calloc(1, sizeof(*ref) + namelen);
7393 if (!ref)
7394 return ERR;
7395 memmove(refs + from + 1, refs + from,
7396 (refs_size - from) * sizeof(*refs));
7397 refs[from] = ref;
7398 strncpy(ref->name, name, namelen);
7399 refs_size++;
7400 }
7402 ref->head = head;
7403 ref->tag = tag;
7404 ref->ltag = ltag;
7405 ref->remote = remote;
7406 ref->tracked = tracked;
7407 string_copy_rev(ref->id, id);
7409 if (head)
7410 refs_head = ref;
7411 return OK;
7412 }
7414 static int
7415 load_refs(void)
7416 {
7417 const char *head_argv[] = {
7418 "git", "symbolic-ref", "HEAD", NULL
7419 };
7420 static const char *ls_remote_argv[SIZEOF_ARG] = {
7421 "git", "ls-remote", opt_git_dir, NULL
7422 };
7423 static bool init = FALSE;
7424 size_t i;
7426 if (!init) {
7427 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
7428 die("TIG_LS_REMOTE contains too many arguments");
7429 init = TRUE;
7430 }
7432 if (!*opt_git_dir)
7433 return OK;
7435 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
7436 !prefixcmp(opt_head, "refs/heads/")) {
7437 char *offset = opt_head + STRING_SIZE("refs/heads/");
7439 memmove(opt_head, offset, strlen(offset) + 1);
7440 }
7442 refs_head = NULL;
7443 for (i = 0; i < refs_size; i++)
7444 refs[i]->id[0] = 0;
7446 if (io_run_load(ls_remote_argv, "\t", read_ref) == ERR)
7447 return ERR;
7449 /* Update the ref lists to reflect changes. */
7450 for (i = 0; i < ref_lists_size; i++) {
7451 struct ref_list *list = ref_lists[i];
7452 size_t old, new;
7454 for (old = new = 0; old < list->size; old++)
7455 if (!strcmp(list->id, list->refs[old]->id))
7456 list->refs[new++] = list->refs[old];
7457 list->size = new;
7458 }
7460 return OK;
7461 }
7463 static void
7464 set_remote_branch(const char *name, const char *value, size_t valuelen)
7465 {
7466 if (!strcmp(name, ".remote")) {
7467 string_ncopy(opt_remote, value, valuelen);
7469 } else if (*opt_remote && !strcmp(name, ".merge")) {
7470 size_t from = strlen(opt_remote);
7472 if (!prefixcmp(value, "refs/heads/"))
7473 value += STRING_SIZE("refs/heads/");
7475 if (!string_format_from(opt_remote, &from, "/%s", value))
7476 opt_remote[0] = 0;
7477 }
7478 }
7480 static void
7481 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
7482 {
7483 const char *argv[SIZEOF_ARG] = { name, "=" };
7484 int argc = 1 + (cmd == option_set_command);
7485 int error = ERR;
7487 if (!argv_from_string(argv, &argc, value))
7488 config_msg = "Too many option arguments";
7489 else
7490 error = cmd(argc, argv);
7492 if (error == ERR)
7493 warn("Option 'tig.%s': %s", name, config_msg);
7494 }
7496 static bool
7497 set_environment_variable(const char *name, const char *value)
7498 {
7499 size_t len = strlen(name) + 1 + strlen(value) + 1;
7500 char *env = malloc(len);
7502 if (env &&
7503 string_nformat(env, len, NULL, "%s=%s", name, value) &&
7504 putenv(env) == 0)
7505 return TRUE;
7506 free(env);
7507 return FALSE;
7508 }
7510 static void
7511 set_work_tree(const char *value)
7512 {
7513 char cwd[SIZEOF_STR];
7515 if (!getcwd(cwd, sizeof(cwd)))
7516 die("Failed to get cwd path: %s", strerror(errno));
7517 if (chdir(opt_git_dir) < 0)
7518 die("Failed to chdir(%s): %s", strerror(errno));
7519 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
7520 die("Failed to get git path: %s", strerror(errno));
7521 if (chdir(cwd) < 0)
7522 die("Failed to chdir(%s): %s", cwd, strerror(errno));
7523 if (chdir(value) < 0)
7524 die("Failed to chdir(%s): %s", value, strerror(errno));
7525 if (!getcwd(cwd, sizeof(cwd)))
7526 die("Failed to get cwd path: %s", strerror(errno));
7527 if (!set_environment_variable("GIT_WORK_TREE", cwd))
7528 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
7529 if (!set_environment_variable("GIT_DIR", opt_git_dir))
7530 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
7531 opt_is_inside_work_tree = TRUE;
7532 }
7534 static int
7535 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
7536 {
7537 if (!strcmp(name, "i18n.commitencoding"))
7538 string_ncopy(opt_encoding, value, valuelen);
7540 else if (!strcmp(name, "core.editor"))
7541 string_ncopy(opt_editor, value, valuelen);
7543 else if (!strcmp(name, "core.worktree"))
7544 set_work_tree(value);
7546 else if (!prefixcmp(name, "tig.color."))
7547 set_repo_config_option(name + 10, value, option_color_command);
7549 else if (!prefixcmp(name, "tig.bind."))
7550 set_repo_config_option(name + 9, value, option_bind_command);
7552 else if (!prefixcmp(name, "tig."))
7553 set_repo_config_option(name + 4, value, option_set_command);
7555 else if (*opt_head && !prefixcmp(name, "branch.") &&
7556 !strncmp(name + 7, opt_head, strlen(opt_head)))
7557 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
7559 return OK;
7560 }
7562 static int
7563 load_git_config(void)
7564 {
7565 const char *config_list_argv[] = { "git", "config", "--list", NULL };
7567 return io_run_load(config_list_argv, "=", read_repo_config_option);
7568 }
7570 static int
7571 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
7572 {
7573 if (!opt_git_dir[0]) {
7574 string_ncopy(opt_git_dir, name, namelen);
7576 } else if (opt_is_inside_work_tree == -1) {
7577 /* This can be 3 different values depending on the
7578 * version of git being used. If git-rev-parse does not
7579 * understand --is-inside-work-tree it will simply echo
7580 * the option else either "true" or "false" is printed.
7581 * Default to true for the unknown case. */
7582 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
7584 } else if (*name == '.') {
7585 string_ncopy(opt_cdup, name, namelen);
7587 } else {
7588 string_ncopy(opt_prefix, name, namelen);
7589 }
7591 return OK;
7592 }
7594 static int
7595 load_repo_info(void)
7596 {
7597 const char *rev_parse_argv[] = {
7598 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
7599 "--show-cdup", "--show-prefix", NULL
7600 };
7602 return io_run_load(rev_parse_argv, "=", read_repo_info);
7603 }
7606 /*
7607 * Main
7608 */
7610 static const char usage[] =
7611 "tig " TIG_VERSION " (" __DATE__ ")\n"
7612 "\n"
7613 "Usage: tig [options] [revs] [--] [paths]\n"
7614 " or: tig show [options] [revs] [--] [paths]\n"
7615 " or: tig blame [rev] path\n"
7616 " or: tig status\n"
7617 " or: tig < [git command output]\n"
7618 "\n"
7619 "Options:\n"
7620 " -v, --version Show version and exit\n"
7621 " -h, --help Show help message and exit";
7623 static void __NORETURN
7624 quit(int sig)
7625 {
7626 /* XXX: Restore tty modes and let the OS cleanup the rest! */
7627 if (cursed)
7628 endwin();
7629 exit(0);
7630 }
7632 static void __NORETURN
7633 die(const char *err, ...)
7634 {
7635 va_list args;
7637 endwin();
7639 va_start(args, err);
7640 fputs("tig: ", stderr);
7641 vfprintf(stderr, err, args);
7642 fputs("\n", stderr);
7643 va_end(args);
7645 exit(1);
7646 }
7648 static void
7649 warn(const char *msg, ...)
7650 {
7651 va_list args;
7653 va_start(args, msg);
7654 fputs("tig warning: ", stderr);
7655 vfprintf(stderr, msg, args);
7656 fputs("\n", stderr);
7657 va_end(args);
7658 }
7660 static enum request
7661 parse_options(int argc, const char *argv[])
7662 {
7663 enum request request = REQ_VIEW_MAIN;
7664 const char *subcommand;
7665 bool seen_dashdash = FALSE;
7666 /* XXX: This is vulnerable to the user overriding options
7667 * required for the main view parser. */
7668 const char *custom_argv[SIZEOF_ARG] = {
7669 "git", "log", "--no-color", "--pretty=raw", "--parents",
7670 "--topo-order", NULL
7671 };
7672 int i, j = 6;
7674 if (!isatty(STDIN_FILENO)) {
7675 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
7676 return REQ_VIEW_PAGER;
7677 }
7679 if (argc <= 1)
7680 return REQ_NONE;
7682 subcommand = argv[1];
7683 if (!strcmp(subcommand, "status")) {
7684 if (argc > 2)
7685 warn("ignoring arguments after `%s'", subcommand);
7686 return REQ_VIEW_STATUS;
7688 } else if (!strcmp(subcommand, "blame")) {
7689 if (argc <= 2 || argc > 4)
7690 die("invalid number of options to blame\n\n%s", usage);
7692 i = 2;
7693 if (argc == 4) {
7694 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
7695 i++;
7696 }
7698 string_ncopy(opt_file, argv[i], strlen(argv[i]));
7699 return REQ_VIEW_BLAME;
7701 } else if (!strcmp(subcommand, "show")) {
7702 request = REQ_VIEW_DIFF;
7704 } else {
7705 subcommand = NULL;
7706 }
7708 if (subcommand) {
7709 custom_argv[1] = subcommand;
7710 j = 2;
7711 }
7713 for (i = 1 + !!subcommand; i < argc; i++) {
7714 const char *opt = argv[i];
7716 if (seen_dashdash || !strcmp(opt, "--")) {
7717 seen_dashdash = TRUE;
7719 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
7720 printf("tig version %s\n", TIG_VERSION);
7721 quit(0);
7723 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
7724 printf("%s\n", usage);
7725 quit(0);
7726 }
7728 custom_argv[j++] = opt;
7729 if (j >= ARRAY_SIZE(custom_argv))
7730 die("command too long");
7731 }
7733 if (!prepare_update(VIEW(request), custom_argv, NULL))
7734 die("Failed to format arguments");
7736 return request;
7737 }
7739 int
7740 main(int argc, const char *argv[])
7741 {
7742 const char *codeset = "UTF-8";
7743 enum request request = parse_options(argc, argv);
7744 struct view *view;
7745 size_t i;
7747 signal(SIGINT, quit);
7748 signal(SIGPIPE, SIG_IGN);
7750 if (setlocale(LC_ALL, "")) {
7751 codeset = nl_langinfo(CODESET);
7752 }
7754 if (load_repo_info() == ERR)
7755 die("Failed to load repo info.");
7757 if (load_options() == ERR)
7758 die("Failed to load user config.");
7760 if (load_git_config() == ERR)
7761 die("Failed to load repo config.");
7763 /* Require a git repository unless when running in pager mode. */
7764 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7765 die("Not a git repository");
7767 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
7768 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
7769 if (opt_iconv_in == ICONV_NONE)
7770 die("Failed to initialize character set conversion");
7771 }
7773 if (codeset && strcmp(codeset, "UTF-8")) {
7774 opt_iconv_out = iconv_open(codeset, "UTF-8");
7775 if (opt_iconv_out == ICONV_NONE)
7776 die("Failed to initialize character set conversion");
7777 }
7779 if (load_refs() == ERR)
7780 die("Failed to load refs.");
7782 foreach_view (view, i)
7783 if (!argv_from_env(view->ops->argv, view->cmd_env))
7784 die("Too many arguments in the `%s` environment variable",
7785 view->cmd_env);
7787 init_display();
7789 if (request != REQ_NONE)
7790 open_view(NULL, request, OPEN_PREPARED);
7791 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7793 while (view_driver(display[current_view], request)) {
7794 int key = get_input(0);
7796 view = display[current_view];
7797 request = get_keybinding(view->keymap, key);
7799 /* Some low-level request handling. This keeps access to
7800 * status_win restricted. */
7801 switch (request) {
7802 case REQ_PROMPT:
7803 {
7804 char *cmd = read_prompt(":");
7806 if (cmd && isdigit(*cmd)) {
7807 int lineno = view->lineno + 1;
7809 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7810 select_view_line(view, lineno - 1);
7811 report("");
7812 } else {
7813 report("Unable to parse '%s' as a line number", cmd);
7814 }
7816 } else if (cmd) {
7817 struct view *next = VIEW(REQ_VIEW_PAGER);
7818 const char *argv[SIZEOF_ARG] = { "git" };
7819 int argc = 1;
7821 /* When running random commands, initially show the
7822 * command in the title. However, it maybe later be
7823 * overwritten if a commit line is selected. */
7824 string_ncopy(next->ref, cmd, strlen(cmd));
7826 if (!argv_from_string(argv, &argc, cmd)) {
7827 report("Too many arguments");
7828 } else if (!prepare_update(next, argv, NULL)) {
7829 report("Failed to format command");
7830 } else {
7831 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7832 }
7833 }
7835 request = REQ_NONE;
7836 break;
7837 }
7838 case REQ_SEARCH:
7839 case REQ_SEARCH_BACK:
7840 {
7841 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7842 char *search = read_prompt(prompt);
7844 if (search)
7845 string_ncopy(opt_search, search, strlen(search));
7846 else if (*opt_search)
7847 request = request == REQ_SEARCH ?
7848 REQ_FIND_NEXT :
7849 REQ_FIND_PREV;
7850 else
7851 request = REQ_NONE;
7852 break;
7853 }
7854 default:
7855 break;
7856 }
7857 }
7859 quit(0);
7861 return 0;
7862 }