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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 #include "tig.h"
16 static void __NORETURN die(const char *err, ...);
17 static void warn(const char *msg, ...);
18 static void report(const char *msg, ...);
21 struct ref {
22 char id[SIZEOF_REV]; /* Commit SHA1 ID */
23 unsigned int head:1; /* Is it the current HEAD? */
24 unsigned int tag:1; /* Is it a tag? */
25 unsigned int ltag:1; /* If so, is the tag local? */
26 unsigned int remote:1; /* Is it a remote ref? */
27 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
28 char name[1]; /* Ref name; tag or head names are shortened. */
29 };
31 struct ref_list {
32 char id[SIZEOF_REV]; /* Commit SHA1 ID */
33 size_t size; /* Number of refs. */
34 struct ref **refs; /* References for this ID. */
35 };
37 static struct ref *get_ref_head();
38 static struct ref_list *get_ref_list(const char *id);
39 static void foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data);
40 static int load_refs(void);
42 enum input_status {
43 INPUT_OK,
44 INPUT_SKIP,
45 INPUT_STOP,
46 INPUT_CANCEL
47 };
49 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
51 static char *prompt_input(const char *prompt, input_handler handler, void *data);
52 static bool prompt_yesno(const char *prompt);
54 struct menu_item {
55 int hotkey;
56 const char *text;
57 void *data;
58 };
60 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected);
62 #define DATE_INFO \
63 DATE_(NO), \
64 DATE_(DEFAULT), \
65 DATE_(LOCAL), \
66 DATE_(RELATIVE), \
67 DATE_(SHORT)
69 enum date {
70 #define DATE_(name) DATE_##name
71 DATE_INFO
72 #undef DATE_
73 };
75 static const struct enum_map date_map[] = {
76 #define DATE_(name) ENUM_MAP(#name, DATE_##name)
77 DATE_INFO
78 #undef DATE_
79 };
81 struct time {
82 time_t sec;
83 int tz;
84 };
86 static inline int timecmp(const struct time *t1, const struct time *t2)
87 {
88 return t1->sec - t2->sec;
89 }
91 static const char *
92 mkdate(const struct time *time, enum date date)
93 {
94 static char buf[DATE_COLS + 1];
95 static const struct enum_map reldate[] = {
96 { "second", 1, 60 * 2 },
97 { "minute", 60, 60 * 60 * 2 },
98 { "hour", 60 * 60, 60 * 60 * 24 * 2 },
99 { "day", 60 * 60 * 24, 60 * 60 * 24 * 7 * 2 },
100 { "week", 60 * 60 * 24 * 7, 60 * 60 * 24 * 7 * 5 },
101 { "month", 60 * 60 * 24 * 30, 60 * 60 * 24 * 30 * 12 },
102 };
103 struct tm tm;
105 if (!date || !time || !time->sec)
106 return "";
108 if (date == DATE_RELATIVE) {
109 struct timeval now;
110 time_t date = time->sec + time->tz;
111 time_t seconds;
112 int i;
114 gettimeofday(&now, NULL);
115 seconds = now.tv_sec < date ? date - now.tv_sec : now.tv_sec - date;
116 for (i = 0; i < ARRAY_SIZE(reldate); i++) {
117 if (seconds >= reldate[i].value)
118 continue;
120 seconds /= reldate[i].namelen;
121 if (!string_format(buf, "%ld %s%s %s",
122 seconds, reldate[i].name,
123 seconds > 1 ? "s" : "",
124 now.tv_sec >= date ? "ago" : "ahead"))
125 break;
126 return buf;
127 }
128 }
130 if (date == DATE_LOCAL) {
131 time_t date = time->sec + time->tz;
132 localtime_r(&date, &tm);
133 }
134 else {
135 gmtime_r(&time->sec, &tm);
136 }
137 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
138 }
141 #define AUTHOR_VALUES \
142 AUTHOR_(NO), \
143 AUTHOR_(FULL), \
144 AUTHOR_(ABBREVIATED)
146 enum author {
147 #define AUTHOR_(name) AUTHOR_##name
148 AUTHOR_VALUES,
149 #undef AUTHOR_
150 AUTHOR_DEFAULT = AUTHOR_FULL
151 };
153 static const struct enum_map author_map[] = {
154 #define AUTHOR_(name) ENUM_MAP(#name, AUTHOR_##name)
155 AUTHOR_VALUES
156 #undef AUTHOR_
157 };
159 static const char *
160 get_author_initials(const char *author)
161 {
162 static char initials[AUTHOR_COLS * 6 + 1];
163 size_t pos = 0;
164 const char *end = strchr(author, '\0');
166 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@' || (c) == '-')
168 memset(initials, 0, sizeof(initials));
169 while (author < end) {
170 unsigned char bytes;
171 size_t i;
173 while (is_initial_sep(*author))
174 author++;
176 bytes = utf8_char_length(author, end);
177 if (bytes < sizeof(initials) - 1 - pos) {
178 while (bytes--) {
179 initials[pos++] = *author++;
180 }
181 }
183 for (i = pos; author < end && !is_initial_sep(*author); author++) {
184 if (i < sizeof(initials) - 1)
185 initials[i++] = *author;
186 }
188 initials[i++] = 0;
189 }
191 return initials;
192 }
195 static bool
196 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
197 {
198 int valuelen;
200 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
201 bool advance = cmd[valuelen] != 0;
203 cmd[valuelen] = 0;
204 argv[(*argc)++] = chomp_string(cmd);
205 cmd = chomp_string(cmd + valuelen + advance);
206 }
208 if (*argc < SIZEOF_ARG)
209 argv[*argc] = NULL;
210 return *argc < SIZEOF_ARG;
211 }
213 static bool
214 argv_from_env(const char **argv, const char *name)
215 {
216 char *env = argv ? getenv(name) : NULL;
217 int argc = 0;
219 if (env && *env)
220 env = strdup(env);
221 return !env || argv_from_string(argv, &argc, env);
222 }
224 static void
225 argv_free(const char *argv[])
226 {
227 int argc;
229 if (!argv)
230 return;
231 for (argc = 0; argv[argc]; argc++)
232 free((void *) argv[argc]);
233 argv[0] = NULL;
234 }
236 static size_t
237 argv_size(const char **argv)
238 {
239 int argc = 0;
241 while (argv && argv[argc])
242 argc++;
244 return argc;
245 }
247 DEFINE_ALLOCATOR(argv_realloc, const char *, SIZEOF_ARG)
249 static bool
250 argv_append(const char ***argv, const char *arg)
251 {
252 size_t argc = argv_size(*argv);
254 if (!argv_realloc(argv, argc, 2))
255 return FALSE;
257 (*argv)[argc++] = strdup(arg);
258 (*argv)[argc] = NULL;
259 return TRUE;
260 }
262 static bool
263 argv_append_array(const char ***dst_argv, const char *src_argv[])
264 {
265 int i;
267 for (i = 0; src_argv && src_argv[i]; i++)
268 if (!argv_append(dst_argv, src_argv[i]))
269 return FALSE;
270 return TRUE;
271 }
273 static bool
274 argv_copy(const char ***dst, const char *src[])
275 {
276 int argc;
278 for (argc = 0; src[argc]; argc++)
279 if (!argv_append(dst, src[argc]))
280 return FALSE;
281 return TRUE;
282 }
285 /*
286 * Executing external commands.
287 */
289 enum io_type {
290 IO_FD, /* File descriptor based IO. */
291 IO_BG, /* Execute command in the background. */
292 IO_FG, /* Execute command with same std{in,out,err}. */
293 IO_RD, /* Read only fork+exec IO. */
294 IO_WR, /* Write only fork+exec IO. */
295 IO_AP, /* Append fork+exec output to file. */
296 };
298 struct io {
299 int pipe; /* Pipe end for reading or writing. */
300 pid_t pid; /* PID of spawned process. */
301 int error; /* Error status. */
302 char *buf; /* Read buffer. */
303 size_t bufalloc; /* Allocated buffer size. */
304 size_t bufsize; /* Buffer content size. */
305 char *bufpos; /* Current buffer position. */
306 unsigned int eof:1; /* Has end of file been reached. */
307 };
309 static void
310 io_init(struct io *io)
311 {
312 memset(io, 0, sizeof(*io));
313 io->pipe = -1;
314 }
316 static bool
317 io_open(struct io *io, const char *fmt, ...)
318 {
319 char name[SIZEOF_STR] = "";
320 bool fits;
321 va_list args;
323 io_init(io);
325 va_start(args, fmt);
326 fits = vsnprintf(name, sizeof(name), fmt, args) < sizeof(name);
327 va_end(args);
329 if (!fits) {
330 io->error = ENAMETOOLONG;
331 return FALSE;
332 }
333 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
334 if (io->pipe == -1)
335 io->error = errno;
336 return io->pipe != -1;
337 }
339 static bool
340 io_kill(struct io *io)
341 {
342 return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
343 }
345 static bool
346 io_done(struct io *io)
347 {
348 pid_t pid = io->pid;
350 if (io->pipe != -1)
351 close(io->pipe);
352 free(io->buf);
353 io_init(io);
355 while (pid > 0) {
356 int status;
357 pid_t waiting = waitpid(pid, &status, 0);
359 if (waiting < 0) {
360 if (errno == EINTR)
361 continue;
362 io->error = errno;
363 return FALSE;
364 }
366 return waiting == pid &&
367 !WIFSIGNALED(status) &&
368 WIFEXITED(status) &&
369 !WEXITSTATUS(status);
370 }
372 return TRUE;
373 }
375 static bool
376 io_run(struct io *io, enum io_type type, const char *dir, const char *argv[], ...)
377 {
378 int pipefds[2] = { -1, -1 };
379 va_list args;
381 io_init(io);
383 if ((type == IO_RD || type == IO_WR) && pipe(pipefds) < 0) {
384 io->error = errno;
385 return FALSE;
386 } else if (type == IO_AP) {
387 va_start(args, argv);
388 pipefds[1] = va_arg(args, int);
389 va_end(args);
390 }
392 if ((io->pid = fork())) {
393 if (io->pid == -1)
394 io->error = errno;
395 if (pipefds[!(type == IO_WR)] != -1)
396 close(pipefds[!(type == IO_WR)]);
397 if (io->pid != -1) {
398 io->pipe = pipefds[!!(type == IO_WR)];
399 return TRUE;
400 }
402 } else {
403 if (type != IO_FG) {
404 int devnull = open("/dev/null", O_RDWR);
405 int readfd = type == IO_WR ? pipefds[0] : devnull;
406 int writefd = (type == IO_RD || type == IO_AP)
407 ? pipefds[1] : devnull;
409 dup2(readfd, STDIN_FILENO);
410 dup2(writefd, STDOUT_FILENO);
411 dup2(devnull, STDERR_FILENO);
413 close(devnull);
414 if (pipefds[0] != -1)
415 close(pipefds[0]);
416 if (pipefds[1] != -1)
417 close(pipefds[1]);
418 }
420 if (dir && *dir && chdir(dir) == -1)
421 exit(errno);
423 execvp(argv[0], (char *const*) argv);
424 exit(errno);
425 }
427 if (pipefds[!!(type == IO_WR)] != -1)
428 close(pipefds[!!(type == IO_WR)]);
429 return FALSE;
430 }
432 static bool
433 io_complete(enum io_type type, const char **argv, const char *dir, int fd)
434 {
435 struct io io;
437 return io_run(&io, type, dir, argv, fd) && io_done(&io);
438 }
440 static bool
441 io_run_bg(const char **argv)
442 {
443 return io_complete(IO_BG, argv, NULL, -1);
444 }
446 static bool
447 io_run_fg(const char **argv, const char *dir)
448 {
449 return io_complete(IO_FG, argv, dir, -1);
450 }
452 static bool
453 io_run_append(const char **argv, int fd)
454 {
455 return io_complete(IO_AP, argv, NULL, fd);
456 }
458 static bool
459 io_eof(struct io *io)
460 {
461 return io->eof;
462 }
464 static int
465 io_error(struct io *io)
466 {
467 return io->error;
468 }
470 static char *
471 io_strerror(struct io *io)
472 {
473 return strerror(io->error);
474 }
476 static bool
477 io_can_read(struct io *io)
478 {
479 struct timeval tv = { 0, 500 };
480 fd_set fds;
482 FD_ZERO(&fds);
483 FD_SET(io->pipe, &fds);
485 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
486 }
488 static ssize_t
489 io_read(struct io *io, void *buf, size_t bufsize)
490 {
491 do {
492 ssize_t readsize = read(io->pipe, buf, bufsize);
494 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
495 continue;
496 else if (readsize == -1)
497 io->error = errno;
498 else if (readsize == 0)
499 io->eof = 1;
500 return readsize;
501 } while (1);
502 }
504 DEFINE_ALLOCATOR(io_realloc_buf, char, BUFSIZ)
506 static char *
507 io_get(struct io *io, int c, bool can_read)
508 {
509 char *eol;
510 ssize_t readsize;
512 while (TRUE) {
513 if (io->bufsize > 0) {
514 eol = memchr(io->bufpos, c, io->bufsize);
515 if (eol) {
516 char *line = io->bufpos;
518 *eol = 0;
519 io->bufpos = eol + 1;
520 io->bufsize -= io->bufpos - line;
521 return line;
522 }
523 }
525 if (io_eof(io)) {
526 if (io->bufsize) {
527 io->bufpos[io->bufsize] = 0;
528 io->bufsize = 0;
529 return io->bufpos;
530 }
531 return NULL;
532 }
534 if (!can_read)
535 return NULL;
537 if (io->bufsize > 0 && io->bufpos > io->buf)
538 memmove(io->buf, io->bufpos, io->bufsize);
540 if (io->bufalloc == io->bufsize) {
541 if (!io_realloc_buf(&io->buf, io->bufalloc, BUFSIZ))
542 return NULL;
543 io->bufalloc += BUFSIZ;
544 }
546 io->bufpos = io->buf;
547 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
548 if (io_error(io))
549 return NULL;
550 io->bufsize += readsize;
551 }
552 }
554 static bool
555 io_write(struct io *io, const void *buf, size_t bufsize)
556 {
557 size_t written = 0;
559 while (!io_error(io) && written < bufsize) {
560 ssize_t size;
562 size = write(io->pipe, buf + written, bufsize - written);
563 if (size < 0 && (errno == EAGAIN || errno == EINTR))
564 continue;
565 else if (size == -1)
566 io->error = errno;
567 else
568 written += size;
569 }
571 return written == bufsize;
572 }
574 static bool
575 io_read_buf(struct io *io, char buf[], size_t bufsize)
576 {
577 char *result = io_get(io, '\n', TRUE);
579 if (result) {
580 result = chomp_string(result);
581 string_ncopy_do(buf, bufsize, result, strlen(result));
582 }
584 return io_done(io) && result;
585 }
587 static bool
588 io_run_buf(const char **argv, char buf[], size_t bufsize)
589 {
590 struct io io;
592 return io_run(&io, IO_RD, NULL, argv) && io_read_buf(&io, buf, bufsize);
593 }
595 typedef int (*io_read_fn)(char *, size_t, char *, size_t, void *data);
597 static int
598 io_load(struct io *io, const char *separators,
599 io_read_fn read_property, void *data)
600 {
601 char *name;
602 int state = OK;
604 while (state == OK && (name = io_get(io, '\n', TRUE))) {
605 char *value;
606 size_t namelen;
607 size_t valuelen;
609 name = chomp_string(name);
610 namelen = strcspn(name, separators);
612 if (name[namelen]) {
613 name[namelen] = 0;
614 value = chomp_string(name + namelen + 1);
615 valuelen = strlen(value);
617 } else {
618 value = "";
619 valuelen = 0;
620 }
622 state = read_property(name, namelen, value, valuelen, data);
623 }
625 if (state != ERR && io_error(io))
626 state = ERR;
627 io_done(io);
629 return state;
630 }
632 static int
633 io_run_load(const char **argv, const char *separators,
634 io_read_fn read_property, void *data)
635 {
636 struct io io;
638 if (!io_run(&io, IO_RD, NULL, argv))
639 return ERR;
640 return io_load(&io, separators, read_property, data);
641 }
644 /*
645 * User requests
646 */
648 #define REQ_INFO \
649 /* XXX: Keep the view request first and in sync with views[]. */ \
650 REQ_GROUP("View switching") \
651 REQ_(VIEW_MAIN, "Show main view"), \
652 REQ_(VIEW_DIFF, "Show diff view"), \
653 REQ_(VIEW_LOG, "Show log view"), \
654 REQ_(VIEW_TREE, "Show tree view"), \
655 REQ_(VIEW_BLOB, "Show blob view"), \
656 REQ_(VIEW_BLAME, "Show blame view"), \
657 REQ_(VIEW_BRANCH, "Show branch view"), \
658 REQ_(VIEW_HELP, "Show help page"), \
659 REQ_(VIEW_PAGER, "Show pager view"), \
660 REQ_(VIEW_STATUS, "Show status view"), \
661 REQ_(VIEW_STAGE, "Show stage view"), \
662 \
663 REQ_GROUP("View manipulation") \
664 REQ_(ENTER, "Enter current line and scroll"), \
665 REQ_(NEXT, "Move to next"), \
666 REQ_(PREVIOUS, "Move to previous"), \
667 REQ_(PARENT, "Move to parent"), \
668 REQ_(VIEW_NEXT, "Move focus to next view"), \
669 REQ_(REFRESH, "Reload and refresh"), \
670 REQ_(MAXIMIZE, "Maximize the current view"), \
671 REQ_(VIEW_CLOSE, "Close the current view"), \
672 REQ_(QUIT, "Close all views and quit"), \
673 \
674 REQ_GROUP("View specific requests") \
675 REQ_(STATUS_UPDATE, "Update file status"), \
676 REQ_(STATUS_REVERT, "Revert file changes"), \
677 REQ_(STATUS_MERGE, "Merge file using external tool"), \
678 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
679 \
680 REQ_GROUP("Cursor navigation") \
681 REQ_(MOVE_UP, "Move cursor one line up"), \
682 REQ_(MOVE_DOWN, "Move cursor one line down"), \
683 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
684 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
685 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
686 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
687 \
688 REQ_GROUP("Scrolling") \
689 REQ_(SCROLL_FIRST_COL, "Scroll to the first line columns"), \
690 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
691 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
692 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
693 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
694 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
695 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
696 \
697 REQ_GROUP("Searching") \
698 REQ_(SEARCH, "Search the view"), \
699 REQ_(SEARCH_BACK, "Search backwards in the view"), \
700 REQ_(FIND_NEXT, "Find next search match"), \
701 REQ_(FIND_PREV, "Find previous search match"), \
702 \
703 REQ_GROUP("Option manipulation") \
704 REQ_(OPTIONS, "Open option menu"), \
705 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
706 REQ_(TOGGLE_DATE, "Toggle date display"), \
707 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
708 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
709 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
710 REQ_(TOGGLE_SORT_ORDER, "Toggle ascending/descending sort order"), \
711 REQ_(TOGGLE_SORT_FIELD, "Toggle field to sort by"), \
712 \
713 REQ_GROUP("Misc") \
714 REQ_(PROMPT, "Bring up the prompt"), \
715 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
716 REQ_(SHOW_VERSION, "Show version information"), \
717 REQ_(STOP_LOADING, "Stop all loading views"), \
718 REQ_(EDIT, "Open in editor"), \
719 REQ_(NONE, "Do nothing")
722 /* User action requests. */
723 enum request {
724 #define REQ_GROUP(help)
725 #define REQ_(req, help) REQ_##req
727 /* Offset all requests to avoid conflicts with ncurses getch values. */
728 REQ_UNKNOWN = KEY_MAX + 1,
729 REQ_OFFSET,
730 REQ_INFO
732 #undef REQ_GROUP
733 #undef REQ_
734 };
736 struct request_info {
737 enum request request;
738 const char *name;
739 int namelen;
740 const char *help;
741 };
743 static const struct request_info req_info[] = {
744 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
745 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
746 REQ_INFO
747 #undef REQ_GROUP
748 #undef REQ_
749 };
751 static enum request
752 get_request(const char *name)
753 {
754 int namelen = strlen(name);
755 int i;
757 for (i = 0; i < ARRAY_SIZE(req_info); i++)
758 if (enum_equals(req_info[i], name, namelen))
759 return req_info[i].request;
761 return REQ_UNKNOWN;
762 }
765 /*
766 * Options
767 */
769 /* Option and state variables. */
770 static enum date opt_date = DATE_DEFAULT;
771 static enum author opt_author = AUTHOR_DEFAULT;
772 static bool opt_line_number = FALSE;
773 static bool opt_line_graphics = TRUE;
774 static bool opt_rev_graph = FALSE;
775 static bool opt_show_refs = TRUE;
776 static bool opt_untracked_dirs_content = TRUE;
777 static int opt_num_interval = 5;
778 static double opt_hscroll = 0.50;
779 static double opt_scale_split_view = 2.0 / 3.0;
780 static int opt_tab_size = 8;
781 static int opt_author_cols = AUTHOR_COLS;
782 static char opt_path[SIZEOF_STR] = "";
783 static char opt_file[SIZEOF_STR] = "";
784 static char opt_ref[SIZEOF_REF] = "";
785 static char opt_head[SIZEOF_REF] = "";
786 static char opt_remote[SIZEOF_REF] = "";
787 static char opt_encoding[20] = "UTF-8";
788 static iconv_t opt_iconv_in = ICONV_NONE;
789 static iconv_t opt_iconv_out = ICONV_NONE;
790 static char opt_search[SIZEOF_STR] = "";
791 static char opt_cdup[SIZEOF_STR] = "";
792 static char opt_prefix[SIZEOF_STR] = "";
793 static char opt_git_dir[SIZEOF_STR] = "";
794 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
795 static char opt_editor[SIZEOF_STR] = "";
796 static FILE *opt_tty = NULL;
797 static const char **opt_diff_argv = NULL;
798 static const char **opt_rev_argv = NULL;
799 static const char **opt_file_argv = NULL;
801 #define is_initial_commit() (!get_ref_head())
802 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || (get_ref_head() && !strcmp(rev, get_ref_head()->id)))
805 /*
806 * Line-oriented content detection.
807 */
809 #define LINE_INFO \
810 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
811 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
812 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
813 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
814 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
815 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
816 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
817 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
818 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
819 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
820 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
821 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
822 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
823 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
824 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
825 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
826 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
827 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
828 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
829 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
830 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
831 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
832 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
833 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
834 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
835 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
836 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
837 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
838 LINE(TESTED, " Tested-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
839 LINE(REVIEWED, " Reviewed-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
840 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
841 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
842 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
843 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
844 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
845 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
846 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
847 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
848 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
849 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
850 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
851 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
852 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
853 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
854 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
855 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
856 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
857 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
858 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
859 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
860 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
861 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
862 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
863 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
864 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
865 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
866 LINE(HELP_KEYMAP, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
867 LINE(HELP_GROUP, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
868 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
870 enum line_type {
871 #define LINE(type, line, fg, bg, attr) \
872 LINE_##type
873 LINE_INFO,
874 LINE_NONE
875 #undef LINE
876 };
878 struct line_info {
879 const char *name; /* Option name. */
880 int namelen; /* Size of option name. */
881 const char *line; /* The start of line to match. */
882 int linelen; /* Size of string to match. */
883 int fg, bg, attr; /* Color and text attributes for the lines. */
884 };
886 static struct line_info line_info[] = {
887 #define LINE(type, line, fg, bg, attr) \
888 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
889 LINE_INFO
890 #undef LINE
891 };
893 static enum line_type
894 get_line_type(const char *line)
895 {
896 int linelen = strlen(line);
897 enum line_type type;
899 for (type = 0; type < ARRAY_SIZE(line_info); type++)
900 /* Case insensitive search matches Signed-off-by lines better. */
901 if (linelen >= line_info[type].linelen &&
902 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
903 return type;
905 return LINE_DEFAULT;
906 }
908 static inline int
909 get_line_attr(enum line_type type)
910 {
911 assert(type < ARRAY_SIZE(line_info));
912 return COLOR_PAIR(type) | line_info[type].attr;
913 }
915 static struct line_info *
916 get_line_info(const char *name)
917 {
918 size_t namelen = strlen(name);
919 enum line_type type;
921 for (type = 0; type < ARRAY_SIZE(line_info); type++)
922 if (enum_equals(line_info[type], name, namelen))
923 return &line_info[type];
925 return NULL;
926 }
928 static void
929 init_colors(void)
930 {
931 int default_bg = line_info[LINE_DEFAULT].bg;
932 int default_fg = line_info[LINE_DEFAULT].fg;
933 enum line_type type;
935 start_color();
937 if (assume_default_colors(default_fg, default_bg) == ERR) {
938 default_bg = COLOR_BLACK;
939 default_fg = COLOR_WHITE;
940 }
942 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
943 struct line_info *info = &line_info[type];
944 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
945 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
947 init_pair(type, fg, bg);
948 }
949 }
951 struct line {
952 enum line_type type;
954 /* State flags */
955 unsigned int selected:1;
956 unsigned int dirty:1;
957 unsigned int cleareol:1;
958 unsigned int other:16;
960 void *data; /* User data */
961 };
964 /*
965 * Keys
966 */
968 struct keybinding {
969 int alias;
970 enum request request;
971 };
973 static struct keybinding default_keybindings[] = {
974 /* View switching */
975 { 'm', REQ_VIEW_MAIN },
976 { 'd', REQ_VIEW_DIFF },
977 { 'l', REQ_VIEW_LOG },
978 { 't', REQ_VIEW_TREE },
979 { 'f', REQ_VIEW_BLOB },
980 { 'B', REQ_VIEW_BLAME },
981 { 'H', REQ_VIEW_BRANCH },
982 { 'p', REQ_VIEW_PAGER },
983 { 'h', REQ_VIEW_HELP },
984 { 'S', REQ_VIEW_STATUS },
985 { 'c', REQ_VIEW_STAGE },
987 /* View manipulation */
988 { 'q', REQ_VIEW_CLOSE },
989 { KEY_TAB, REQ_VIEW_NEXT },
990 { KEY_RETURN, REQ_ENTER },
991 { KEY_UP, REQ_PREVIOUS },
992 { KEY_CTL('P'), REQ_PREVIOUS },
993 { KEY_DOWN, REQ_NEXT },
994 { KEY_CTL('N'), REQ_NEXT },
995 { 'R', REQ_REFRESH },
996 { KEY_F(5), REQ_REFRESH },
997 { 'O', REQ_MAXIMIZE },
999 /* Cursor navigation */
1000 { 'k', REQ_MOVE_UP },
1001 { 'j', REQ_MOVE_DOWN },
1002 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1003 { KEY_END, REQ_MOVE_LAST_LINE },
1004 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1005 { KEY_CTL('D'), REQ_MOVE_PAGE_DOWN },
1006 { ' ', REQ_MOVE_PAGE_DOWN },
1007 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1008 { KEY_CTL('U'), REQ_MOVE_PAGE_UP },
1009 { 'b', REQ_MOVE_PAGE_UP },
1010 { '-', REQ_MOVE_PAGE_UP },
1012 /* Scrolling */
1013 { '|', REQ_SCROLL_FIRST_COL },
1014 { KEY_LEFT, REQ_SCROLL_LEFT },
1015 { KEY_RIGHT, REQ_SCROLL_RIGHT },
1016 { KEY_IC, REQ_SCROLL_LINE_UP },
1017 { KEY_CTL('Y'), REQ_SCROLL_LINE_UP },
1018 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1019 { KEY_CTL('E'), REQ_SCROLL_LINE_DOWN },
1020 { 'w', REQ_SCROLL_PAGE_UP },
1021 { 's', REQ_SCROLL_PAGE_DOWN },
1023 /* Searching */
1024 { '/', REQ_SEARCH },
1025 { '?', REQ_SEARCH_BACK },
1026 { 'n', REQ_FIND_NEXT },
1027 { 'N', REQ_FIND_PREV },
1029 /* Misc */
1030 { 'Q', REQ_QUIT },
1031 { 'z', REQ_STOP_LOADING },
1032 { 'v', REQ_SHOW_VERSION },
1033 { 'r', REQ_SCREEN_REDRAW },
1034 { KEY_CTL('L'), REQ_SCREEN_REDRAW },
1035 { 'o', REQ_OPTIONS },
1036 { '.', REQ_TOGGLE_LINENO },
1037 { 'D', REQ_TOGGLE_DATE },
1038 { 'A', REQ_TOGGLE_AUTHOR },
1039 { 'g', REQ_TOGGLE_REV_GRAPH },
1040 { 'F', REQ_TOGGLE_REFS },
1041 { 'I', REQ_TOGGLE_SORT_ORDER },
1042 { 'i', REQ_TOGGLE_SORT_FIELD },
1043 { ':', REQ_PROMPT },
1044 { 'u', REQ_STATUS_UPDATE },
1045 { '!', REQ_STATUS_REVERT },
1046 { 'M', REQ_STATUS_MERGE },
1047 { '@', REQ_STAGE_NEXT },
1048 { ',', REQ_PARENT },
1049 { 'e', REQ_EDIT },
1050 };
1052 #define KEYMAP_INFO \
1053 KEYMAP_(GENERIC), \
1054 KEYMAP_(MAIN), \
1055 KEYMAP_(DIFF), \
1056 KEYMAP_(LOG), \
1057 KEYMAP_(TREE), \
1058 KEYMAP_(BLOB), \
1059 KEYMAP_(BLAME), \
1060 KEYMAP_(BRANCH), \
1061 KEYMAP_(PAGER), \
1062 KEYMAP_(HELP), \
1063 KEYMAP_(STATUS), \
1064 KEYMAP_(STAGE)
1066 enum keymap {
1067 #define KEYMAP_(name) KEYMAP_##name
1068 KEYMAP_INFO
1069 #undef KEYMAP_
1070 };
1072 static const struct enum_map keymap_table[] = {
1073 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
1074 KEYMAP_INFO
1075 #undef KEYMAP_
1076 };
1078 #define set_keymap(map, name) map_enum(map, keymap_table, name)
1080 struct keybinding_table {
1081 struct keybinding *data;
1082 size_t size;
1083 };
1085 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1087 static void
1088 add_keybinding(enum keymap keymap, enum request request, int key)
1089 {
1090 struct keybinding_table *table = &keybindings[keymap];
1091 size_t i;
1093 for (i = 0; i < keybindings[keymap].size; i++) {
1094 if (keybindings[keymap].data[i].alias == key) {
1095 keybindings[keymap].data[i].request = request;
1096 return;
1097 }
1098 }
1100 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1101 if (!table->data)
1102 die("Failed to allocate keybinding");
1103 table->data[table->size].alias = key;
1104 table->data[table->size++].request = request;
1106 if (request == REQ_NONE && keymap == KEYMAP_GENERIC) {
1107 int i;
1109 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1110 if (default_keybindings[i].alias == key)
1111 default_keybindings[i].request = REQ_NONE;
1112 }
1113 }
1115 /* Looks for a key binding first in the given map, then in the generic map, and
1116 * lastly in the default keybindings. */
1117 static enum request
1118 get_keybinding(enum keymap keymap, int key)
1119 {
1120 size_t i;
1122 for (i = 0; i < keybindings[keymap].size; i++)
1123 if (keybindings[keymap].data[i].alias == key)
1124 return keybindings[keymap].data[i].request;
1126 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1127 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1128 return keybindings[KEYMAP_GENERIC].data[i].request;
1130 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1131 if (default_keybindings[i].alias == key)
1132 return default_keybindings[i].request;
1134 return (enum request) key;
1135 }
1138 struct key {
1139 const char *name;
1140 int value;
1141 };
1143 static const struct key key_table[] = {
1144 { "Enter", KEY_RETURN },
1145 { "Space", ' ' },
1146 { "Backspace", KEY_BACKSPACE },
1147 { "Tab", KEY_TAB },
1148 { "Escape", KEY_ESC },
1149 { "Left", KEY_LEFT },
1150 { "Right", KEY_RIGHT },
1151 { "Up", KEY_UP },
1152 { "Down", KEY_DOWN },
1153 { "Insert", KEY_IC },
1154 { "Delete", KEY_DC },
1155 { "Hash", '#' },
1156 { "Home", KEY_HOME },
1157 { "End", KEY_END },
1158 { "PageUp", KEY_PPAGE },
1159 { "PageDown", KEY_NPAGE },
1160 { "F1", KEY_F(1) },
1161 { "F2", KEY_F(2) },
1162 { "F3", KEY_F(3) },
1163 { "F4", KEY_F(4) },
1164 { "F5", KEY_F(5) },
1165 { "F6", KEY_F(6) },
1166 { "F7", KEY_F(7) },
1167 { "F8", KEY_F(8) },
1168 { "F9", KEY_F(9) },
1169 { "F10", KEY_F(10) },
1170 { "F11", KEY_F(11) },
1171 { "F12", KEY_F(12) },
1172 };
1174 static int
1175 get_key_value(const char *name)
1176 {
1177 int i;
1179 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1180 if (!strcasecmp(key_table[i].name, name))
1181 return key_table[i].value;
1183 if (strlen(name) == 2 && name[0] == '^' && isprint(*name))
1184 return (int)name[1] & 0x1f;
1185 if (strlen(name) == 1 && isprint(*name))
1186 return (int) *name;
1187 return ERR;
1188 }
1190 static const char *
1191 get_key_name(int key_value)
1192 {
1193 static char key_char[] = "'X'\0";
1194 const char *seq = NULL;
1195 int key;
1197 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1198 if (key_table[key].value == key_value)
1199 seq = key_table[key].name;
1201 if (seq == NULL && key_value < 0x7f) {
1202 char *s = key_char + 1;
1204 if (key_value >= 0x20) {
1205 *s++ = key_value;
1206 } else {
1207 *s++ = '^';
1208 *s++ = 0x40 | (key_value & 0x1f);
1209 }
1210 *s++ = '\'';
1211 *s++ = '\0';
1212 seq = key_char;
1213 }
1215 return seq ? seq : "(no key)";
1216 }
1218 static bool
1219 append_key(char *buf, size_t *pos, const struct keybinding *keybinding)
1220 {
1221 const char *sep = *pos > 0 ? ", " : "";
1222 const char *keyname = get_key_name(keybinding->alias);
1224 return string_nformat(buf, BUFSIZ, pos, "%s%s", sep, keyname);
1225 }
1227 static bool
1228 append_keymap_request_keys(char *buf, size_t *pos, enum request request,
1229 enum keymap keymap, bool all)
1230 {
1231 int i;
1233 for (i = 0; i < keybindings[keymap].size; i++) {
1234 if (keybindings[keymap].data[i].request == request) {
1235 if (!append_key(buf, pos, &keybindings[keymap].data[i]))
1236 return FALSE;
1237 if (!all)
1238 break;
1239 }
1240 }
1242 return TRUE;
1243 }
1245 #define get_key(keymap, request) get_keys(keymap, request, FALSE)
1247 static const char *
1248 get_keys(enum keymap keymap, enum request request, bool all)
1249 {
1250 static char buf[BUFSIZ];
1251 size_t pos = 0;
1252 int i;
1254 buf[pos] = 0;
1256 if (!append_keymap_request_keys(buf, &pos, request, keymap, all))
1257 return "Too many keybindings!";
1258 if (pos > 0 && !all)
1259 return buf;
1261 if (keymap != KEYMAP_GENERIC) {
1262 /* Only the generic keymap includes the default keybindings when
1263 * listing all keys. */
1264 if (all)
1265 return buf;
1267 if (!append_keymap_request_keys(buf, &pos, request, KEYMAP_GENERIC, all))
1268 return "Too many keybindings!";
1269 if (pos)
1270 return buf;
1271 }
1273 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1274 if (default_keybindings[i].request == request) {
1275 if (!append_key(buf, &pos, &default_keybindings[i]))
1276 return "Too many keybindings!";
1277 if (!all)
1278 return buf;
1279 }
1280 }
1282 return buf;
1283 }
1285 struct run_request {
1286 enum keymap keymap;
1287 int key;
1288 const char **argv;
1289 };
1291 static struct run_request *run_request;
1292 static size_t run_requests;
1294 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
1296 static enum request
1297 add_run_request(enum keymap keymap, int key, const char **argv)
1298 {
1299 struct run_request *req;
1301 if (!realloc_run_requests(&run_request, run_requests, 1))
1302 return REQ_NONE;
1304 req = &run_request[run_requests];
1305 req->keymap = keymap;
1306 req->key = key;
1307 req->argv = NULL;
1309 if (!argv_copy(&req->argv, argv))
1310 return REQ_NONE;
1312 return REQ_NONE + ++run_requests;
1313 }
1315 static struct run_request *
1316 get_run_request(enum request request)
1317 {
1318 if (request <= REQ_NONE)
1319 return NULL;
1320 return &run_request[request - REQ_NONE - 1];
1321 }
1323 static void
1324 add_builtin_run_requests(void)
1325 {
1326 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1327 const char *checkout[] = { "git", "checkout", "%(branch)", NULL };
1328 const char *commit[] = { "git", "commit", NULL };
1329 const char *gc[] = { "git", "gc", NULL };
1330 struct run_request reqs[] = {
1331 { KEYMAP_MAIN, 'C', cherry_pick },
1332 { KEYMAP_STATUS, 'C', commit },
1333 { KEYMAP_BRANCH, 'C', checkout },
1334 { KEYMAP_GENERIC, 'G', gc },
1335 };
1336 int i;
1338 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1339 enum request req = get_keybinding(reqs[i].keymap, reqs[i].key);
1341 if (req != reqs[i].key)
1342 continue;
1343 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argv);
1344 if (req != REQ_NONE)
1345 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1346 }
1347 }
1349 /*
1350 * User config file handling.
1351 */
1353 #define OPT_ERR_INFO \
1354 OPT_ERR_(INTEGER_VALUE_OUT_OF_BOUND, "Integer value out of bound"), \
1355 OPT_ERR_(INVALID_STEP_VALUE, "Invalid step value"), \
1356 OPT_ERR_(NO_OPTION_VALUE, "No option value"), \
1357 OPT_ERR_(NO_VALUE_ASSIGNED, "No value assigned"), \
1358 OPT_ERR_(OBSOLETE_REQUEST_NAME, "Obsolete request name"), \
1359 OPT_ERR_(TOO_MANY_OPTION_ARGUMENTS, "Too many option arguments"), \
1360 OPT_ERR_(UNKNOWN_ATTRIBUTE, "Unknown attribute"), \
1361 OPT_ERR_(UNKNOWN_COLOR, "Unknown color"), \
1362 OPT_ERR_(UNKNOWN_COLOR_NAME, "Unknown color name"), \
1363 OPT_ERR_(UNKNOWN_KEY, "Unknown key"), \
1364 OPT_ERR_(UNKNOWN_KEY_MAP, "Unknown key map"), \
1365 OPT_ERR_(UNKNOWN_OPTION_COMMAND, "Unknown option command"), \
1366 OPT_ERR_(UNKNOWN_REQUEST_NAME, "Unknown request name"), \
1367 OPT_ERR_(UNKNOWN_VARIABLE_NAME, "Unknown variable name"), \
1368 OPT_ERR_(UNMATCHED_QUOTATION, "Unmatched quotation"), \
1369 OPT_ERR_(WRONG_NUMBER_OF_ARGUMENTS, "Wrong number of arguments"),
1371 enum option_code {
1372 #define OPT_ERR_(name, msg) OPT_ERR_ ## name
1373 OPT_ERR_INFO
1374 #undef OPT_ERR_
1375 OPT_OK
1376 };
1378 static const char *option_errors[] = {
1379 #define OPT_ERR_(name, msg) msg
1380 OPT_ERR_INFO
1381 #undef OPT_ERR_
1382 };
1384 static const struct enum_map color_map[] = {
1385 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1386 COLOR_MAP(DEFAULT),
1387 COLOR_MAP(BLACK),
1388 COLOR_MAP(BLUE),
1389 COLOR_MAP(CYAN),
1390 COLOR_MAP(GREEN),
1391 COLOR_MAP(MAGENTA),
1392 COLOR_MAP(RED),
1393 COLOR_MAP(WHITE),
1394 COLOR_MAP(YELLOW),
1395 };
1397 static const struct enum_map attr_map[] = {
1398 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1399 ATTR_MAP(NORMAL),
1400 ATTR_MAP(BLINK),
1401 ATTR_MAP(BOLD),
1402 ATTR_MAP(DIM),
1403 ATTR_MAP(REVERSE),
1404 ATTR_MAP(STANDOUT),
1405 ATTR_MAP(UNDERLINE),
1406 };
1408 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1410 static enum option_code
1411 parse_step(double *opt, const char *arg)
1412 {
1413 *opt = atoi(arg);
1414 if (!strchr(arg, '%'))
1415 return OPT_OK;
1417 /* "Shift down" so 100% and 1 does not conflict. */
1418 *opt = (*opt - 1) / 100;
1419 if (*opt >= 1.0) {
1420 *opt = 0.99;
1421 return OPT_ERR_INVALID_STEP_VALUE;
1422 }
1423 if (*opt < 0.0) {
1424 *opt = 1;
1425 return OPT_ERR_INVALID_STEP_VALUE;
1426 }
1427 return OPT_OK;
1428 }
1430 static enum option_code
1431 parse_int(int *opt, const char *arg, int min, int max)
1432 {
1433 int value = atoi(arg);
1435 if (min <= value && value <= max) {
1436 *opt = value;
1437 return OPT_OK;
1438 }
1440 return OPT_ERR_INTEGER_VALUE_OUT_OF_BOUND;
1441 }
1443 static bool
1444 set_color(int *color, const char *name)
1445 {
1446 if (map_enum(color, color_map, name))
1447 return TRUE;
1448 if (!prefixcmp(name, "color"))
1449 return parse_int(color, name + 5, 0, 255) == OK;
1450 return FALSE;
1451 }
1453 /* Wants: object fgcolor bgcolor [attribute] */
1454 static enum option_code
1455 option_color_command(int argc, const char *argv[])
1456 {
1457 struct line_info *info;
1459 if (argc < 3)
1460 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1462 info = get_line_info(argv[0]);
1463 if (!info) {
1464 static const struct enum_map obsolete[] = {
1465 ENUM_MAP("main-delim", LINE_DELIMITER),
1466 ENUM_MAP("main-date", LINE_DATE),
1467 ENUM_MAP("main-author", LINE_AUTHOR),
1468 };
1469 int index;
1471 if (!map_enum(&index, obsolete, argv[0]))
1472 return OPT_ERR_UNKNOWN_COLOR_NAME;
1473 info = &line_info[index];
1474 }
1476 if (!set_color(&info->fg, argv[1]) ||
1477 !set_color(&info->bg, argv[2]))
1478 return OPT_ERR_UNKNOWN_COLOR;
1480 info->attr = 0;
1481 while (argc-- > 3) {
1482 int attr;
1484 if (!set_attribute(&attr, argv[argc]))
1485 return OPT_ERR_UNKNOWN_ATTRIBUTE;
1486 info->attr |= attr;
1487 }
1489 return OPT_OK;
1490 }
1492 static enum option_code
1493 parse_bool(bool *opt, const char *arg)
1494 {
1495 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1496 ? TRUE : FALSE;
1497 return OPT_OK;
1498 }
1500 static enum option_code
1501 parse_enum_do(unsigned int *opt, const char *arg,
1502 const struct enum_map *map, size_t map_size)
1503 {
1504 bool is_true;
1506 assert(map_size > 1);
1508 if (map_enum_do(map, map_size, (int *) opt, arg))
1509 return OPT_OK;
1511 parse_bool(&is_true, arg);
1512 *opt = is_true ? map[1].value : map[0].value;
1513 return OPT_OK;
1514 }
1516 #define parse_enum(opt, arg, map) \
1517 parse_enum_do(opt, arg, map, ARRAY_SIZE(map))
1519 static enum option_code
1520 parse_string(char *opt, const char *arg, size_t optsize)
1521 {
1522 int arglen = strlen(arg);
1524 switch (arg[0]) {
1525 case '\"':
1526 case '\'':
1527 if (arglen == 1 || arg[arglen - 1] != arg[0])
1528 return OPT_ERR_UNMATCHED_QUOTATION;
1529 arg += 1; arglen -= 2;
1530 default:
1531 string_ncopy_do(opt, optsize, arg, arglen);
1532 return OPT_OK;
1533 }
1534 }
1536 /* Wants: name = value */
1537 static enum option_code
1538 option_set_command(int argc, const char *argv[])
1539 {
1540 if (argc != 3)
1541 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1543 if (strcmp(argv[1], "="))
1544 return OPT_ERR_NO_VALUE_ASSIGNED;
1546 if (!strcmp(argv[0], "show-author"))
1547 return parse_enum(&opt_author, argv[2], author_map);
1549 if (!strcmp(argv[0], "show-date"))
1550 return parse_enum(&opt_date, argv[2], date_map);
1552 if (!strcmp(argv[0], "show-rev-graph"))
1553 return parse_bool(&opt_rev_graph, argv[2]);
1555 if (!strcmp(argv[0], "show-refs"))
1556 return parse_bool(&opt_show_refs, argv[2]);
1558 if (!strcmp(argv[0], "show-line-numbers"))
1559 return parse_bool(&opt_line_number, argv[2]);
1561 if (!strcmp(argv[0], "line-graphics"))
1562 return parse_bool(&opt_line_graphics, argv[2]);
1564 if (!strcmp(argv[0], "line-number-interval"))
1565 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1567 if (!strcmp(argv[0], "author-width"))
1568 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1570 if (!strcmp(argv[0], "horizontal-scroll"))
1571 return parse_step(&opt_hscroll, argv[2]);
1573 if (!strcmp(argv[0], "split-view-height"))
1574 return parse_step(&opt_scale_split_view, argv[2]);
1576 if (!strcmp(argv[0], "tab-size"))
1577 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1579 if (!strcmp(argv[0], "commit-encoding"))
1580 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1582 if (!strcmp(argv[0], "status-untracked-dirs"))
1583 return parse_bool(&opt_untracked_dirs_content, argv[2]);
1585 return OPT_ERR_UNKNOWN_VARIABLE_NAME;
1586 }
1588 /* Wants: mode request key */
1589 static enum option_code
1590 option_bind_command(int argc, const char *argv[])
1591 {
1592 enum request request;
1593 int keymap = -1;
1594 int key;
1596 if (argc < 3)
1597 return OPT_ERR_WRONG_NUMBER_OF_ARGUMENTS;
1599 if (!set_keymap(&keymap, argv[0]))
1600 return OPT_ERR_UNKNOWN_KEY_MAP;
1602 key = get_key_value(argv[1]);
1603 if (key == ERR)
1604 return OPT_ERR_UNKNOWN_KEY;
1606 request = get_request(argv[2]);
1607 if (request == REQ_UNKNOWN) {
1608 static const struct enum_map obsolete[] = {
1609 ENUM_MAP("cherry-pick", REQ_NONE),
1610 ENUM_MAP("screen-resize", REQ_NONE),
1611 ENUM_MAP("tree-parent", REQ_PARENT),
1612 };
1613 int alias;
1615 if (map_enum(&alias, obsolete, argv[2])) {
1616 if (alias != REQ_NONE)
1617 add_keybinding(keymap, alias, key);
1618 return OPT_ERR_OBSOLETE_REQUEST_NAME;
1619 }
1620 }
1621 if (request == REQ_UNKNOWN && *argv[2]++ == '!')
1622 request = add_run_request(keymap, key, argv + 2);
1623 if (request == REQ_UNKNOWN)
1624 return OPT_ERR_UNKNOWN_REQUEST_NAME;
1626 add_keybinding(keymap, request, key);
1628 return OPT_OK;
1629 }
1631 static enum option_code
1632 set_option(const char *opt, char *value)
1633 {
1634 const char *argv[SIZEOF_ARG];
1635 int argc = 0;
1637 if (!argv_from_string(argv, &argc, value))
1638 return OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
1640 if (!strcmp(opt, "color"))
1641 return option_color_command(argc, argv);
1643 if (!strcmp(opt, "set"))
1644 return option_set_command(argc, argv);
1646 if (!strcmp(opt, "bind"))
1647 return option_bind_command(argc, argv);
1649 return OPT_ERR_UNKNOWN_OPTION_COMMAND;
1650 }
1652 struct config_state {
1653 int lineno;
1654 bool errors;
1655 };
1657 static int
1658 read_option(char *opt, size_t optlen, char *value, size_t valuelen, void *data)
1659 {
1660 struct config_state *config = data;
1661 enum option_code status = OPT_ERR_NO_OPTION_VALUE;
1663 config->lineno++;
1665 /* Check for comment markers, since read_properties() will
1666 * only ensure opt and value are split at first " \t". */
1667 optlen = strcspn(opt, "#");
1668 if (optlen == 0)
1669 return OK;
1671 if (opt[optlen] == 0) {
1672 /* Look for comment endings in the value. */
1673 size_t len = strcspn(value, "#");
1675 if (len < valuelen) {
1676 valuelen = len;
1677 value[valuelen] = 0;
1678 }
1680 status = set_option(opt, value);
1681 }
1683 if (status != OPT_OK) {
1684 warn("Error on line %d, near '%.*s': %s",
1685 config->lineno, (int) optlen, opt, option_errors[status]);
1686 config->errors = TRUE;
1687 }
1689 /* Always keep going if errors are encountered. */
1690 return OK;
1691 }
1693 static void
1694 load_option_file(const char *path)
1695 {
1696 struct config_state config = { 0, FALSE };
1697 struct io io;
1699 /* It's OK that the file doesn't exist. */
1700 if (!io_open(&io, "%s", path))
1701 return;
1703 if (io_load(&io, " \t", read_option, &config) == ERR ||
1704 config.errors == TRUE)
1705 warn("Errors while loading %s.", path);
1706 }
1708 static int
1709 load_options(void)
1710 {
1711 const char *home = getenv("HOME");
1712 const char *tigrc_user = getenv("TIGRC_USER");
1713 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1714 const char *tig_diff_opts = getenv("TIG_DIFF_OPTS");
1715 char buf[SIZEOF_STR];
1717 if (!tigrc_system)
1718 tigrc_system = SYSCONFDIR "/tigrc";
1719 load_option_file(tigrc_system);
1721 if (!tigrc_user) {
1722 if (!home || !string_format(buf, "%s/.tigrc", home))
1723 return ERR;
1724 tigrc_user = buf;
1725 }
1726 load_option_file(tigrc_user);
1728 /* Add _after_ loading config files to avoid adding run requests
1729 * that conflict with keybindings. */
1730 add_builtin_run_requests();
1732 if (!opt_diff_argv && tig_diff_opts && *tig_diff_opts) {
1733 static const char *diff_opts[SIZEOF_ARG] = { NULL };
1734 int argc = 0;
1736 if (!string_format(buf, "%s", tig_diff_opts) ||
1737 !argv_from_string(diff_opts, &argc, buf))
1738 die("TIG_DIFF_OPTS contains too many arguments");
1739 else if (!argv_copy(&opt_diff_argv, diff_opts))
1740 die("Failed to format TIG_DIFF_OPTS arguments");
1741 }
1743 return OK;
1744 }
1747 /*
1748 * The viewer
1749 */
1751 struct view;
1752 struct view_ops;
1754 /* The display array of active views and the index of the current view. */
1755 static struct view *display[2];
1756 static WINDOW *display_win[2];
1757 static WINDOW *display_title[2];
1758 static unsigned int current_view;
1760 #define foreach_displayed_view(view, i) \
1761 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1763 #define displayed_views() (display[1] != NULL ? 2 : 1)
1765 /* Current head and commit ID */
1766 static char ref_blob[SIZEOF_REF] = "";
1767 static char ref_commit[SIZEOF_REF] = "HEAD";
1768 static char ref_head[SIZEOF_REF] = "HEAD";
1769 static char ref_branch[SIZEOF_REF] = "";
1771 enum view_type {
1772 VIEW_MAIN,
1773 VIEW_DIFF,
1774 VIEW_LOG,
1775 VIEW_TREE,
1776 VIEW_BLOB,
1777 VIEW_BLAME,
1778 VIEW_BRANCH,
1779 VIEW_HELP,
1780 VIEW_PAGER,
1781 VIEW_STATUS,
1782 VIEW_STAGE,
1783 };
1785 struct view {
1786 enum view_type type; /* View type */
1787 const char *name; /* View name */
1788 const char *cmd_env; /* Command line set via environment */
1789 const char *id; /* Points to either of ref_{head,commit,blob} */
1791 struct view_ops *ops; /* View operations */
1793 enum keymap keymap; /* What keymap does this view have */
1794 bool git_dir; /* Whether the view requires a git directory. */
1796 char ref[SIZEOF_REF]; /* Hovered commit reference */
1797 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1799 int height, width; /* The width and height of the main window */
1800 WINDOW *win; /* The main window */
1802 /* Navigation */
1803 unsigned long offset; /* Offset of the window top */
1804 unsigned long yoffset; /* Offset from the window side. */
1805 unsigned long lineno; /* Current line number */
1806 unsigned long p_offset; /* Previous offset of the window top */
1807 unsigned long p_yoffset;/* Previous offset from the window side */
1808 unsigned long p_lineno; /* Previous current line number */
1809 bool p_restore; /* Should the previous position be restored. */
1811 /* Searching */
1812 char grep[SIZEOF_STR]; /* Search string */
1813 regex_t *regex; /* Pre-compiled regexp */
1815 /* If non-NULL, points to the view that opened this view. If this view
1816 * is closed tig will switch back to the parent view. */
1817 struct view *parent;
1818 struct view *prev;
1820 /* Buffering */
1821 size_t lines; /* Total number of lines */
1822 struct line *line; /* Line index */
1823 unsigned int digits; /* Number of digits in the lines member. */
1825 /* Drawing */
1826 struct line *curline; /* Line currently being drawn. */
1827 enum line_type curtype; /* Attribute currently used for drawing. */
1828 unsigned long col; /* Column when drawing. */
1829 bool has_scrolled; /* View was scrolled. */
1831 /* Loading */
1832 const char **argv; /* Shell command arguments. */
1833 const char *dir; /* Directory from which to execute. */
1834 struct io io;
1835 struct io *pipe;
1836 time_t start_time;
1837 time_t update_secs;
1838 };
1840 struct view_ops {
1841 /* What type of content being displayed. Used in the title bar. */
1842 const char *type;
1843 /* Default command arguments. */
1844 const char **argv;
1845 /* Open and reads in all view content. */
1846 bool (*open)(struct view *view);
1847 /* Read one line; updates view->line. */
1848 bool (*read)(struct view *view, char *data);
1849 /* Draw one line; @lineno must be < view->height. */
1850 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1851 /* Depending on view handle a special requests. */
1852 enum request (*request)(struct view *view, enum request request, struct line *line);
1853 /* Search for regexp in a line. */
1854 bool (*grep)(struct view *view, struct line *line);
1855 /* Select line */
1856 void (*select)(struct view *view, struct line *line);
1857 /* Prepare view for loading */
1858 bool (*prepare)(struct view *view);
1859 };
1861 static struct view_ops blame_ops;
1862 static struct view_ops blob_ops;
1863 static struct view_ops diff_ops;
1864 static struct view_ops help_ops;
1865 static struct view_ops log_ops;
1866 static struct view_ops main_ops;
1867 static struct view_ops pager_ops;
1868 static struct view_ops stage_ops;
1869 static struct view_ops status_ops;
1870 static struct view_ops tree_ops;
1871 static struct view_ops branch_ops;
1873 #define VIEW_STR(type, name, env, ref, ops, map, git) \
1874 { type, name, #env, ref, ops, map, git }
1876 #define VIEW_(id, name, ops, git, ref) \
1877 VIEW_STR(VIEW_##id, name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1879 static struct view views[] = {
1880 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1881 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1882 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1883 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1884 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1885 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1886 VIEW_(BRANCH, "branch", &branch_ops, TRUE, ref_head),
1887 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1888 VIEW_(PAGER, "pager", &pager_ops, FALSE, ""),
1889 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1890 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1891 };
1893 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1895 #define foreach_view(view, i) \
1896 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1898 #define view_is_displayed(view) \
1899 (view == display[0] || view == display[1])
1901 static enum request
1902 view_request(struct view *view, enum request request)
1903 {
1904 if (!view || !view->lines)
1905 return request;
1906 return view->ops->request(view, request, &view->line[view->lineno]);
1907 }
1910 /*
1911 * View drawing.
1912 */
1914 static inline void
1915 set_view_attr(struct view *view, enum line_type type)
1916 {
1917 if (!view->curline->selected && view->curtype != type) {
1918 (void) wattrset(view->win, get_line_attr(type));
1919 wchgat(view->win, -1, 0, type, NULL);
1920 view->curtype = type;
1921 }
1922 }
1924 static int
1925 draw_chars(struct view *view, enum line_type type, const char *string,
1926 int max_len, bool use_tilde)
1927 {
1928 static char out_buffer[BUFSIZ * 2];
1929 int len = 0;
1930 int col = 0;
1931 int trimmed = FALSE;
1932 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1934 if (max_len <= 0)
1935 return 0;
1937 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde, opt_tab_size);
1939 set_view_attr(view, type);
1940 if (len > 0) {
1941 if (opt_iconv_out != ICONV_NONE) {
1942 ICONV_CONST char *inbuf = (ICONV_CONST char *) string;
1943 size_t inlen = len + 1;
1945 char *outbuf = out_buffer;
1946 size_t outlen = sizeof(out_buffer);
1948 size_t ret;
1950 ret = iconv(opt_iconv_out, &inbuf, &inlen, &outbuf, &outlen);
1951 if (ret != (size_t) -1) {
1952 string = out_buffer;
1953 len = sizeof(out_buffer) - outlen;
1954 }
1955 }
1957 waddnstr(view->win, string, len);
1959 if (trimmed && use_tilde) {
1960 set_view_attr(view, LINE_DELIMITER);
1961 waddch(view->win, '~');
1962 col++;
1963 }
1964 }
1966 return col;
1967 }
1969 static int
1970 draw_space(struct view *view, enum line_type type, int max, int spaces)
1971 {
1972 static char space[] = " ";
1973 int col = 0;
1975 spaces = MIN(max, spaces);
1977 while (spaces > 0) {
1978 int len = MIN(spaces, sizeof(space) - 1);
1980 col += draw_chars(view, type, space, len, FALSE);
1981 spaces -= len;
1982 }
1984 return col;
1985 }
1987 static bool
1988 draw_text(struct view *view, enum line_type type, const char *string)
1989 {
1990 char text[SIZEOF_STR];
1992 do {
1993 size_t pos = string_expand(text, sizeof(text), string, opt_tab_size);
1995 view->col += draw_chars(view, type, text, view->width + view->yoffset - view->col, TRUE);
1996 string += pos;
1997 } while (*string && view->width + view->yoffset > view->col);
1999 return view->width + view->yoffset <= view->col;
2000 }
2002 static bool
2003 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
2004 {
2005 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
2006 int max = view->width + view->yoffset - view->col;
2007 int i;
2009 if (max < size)
2010 size = max;
2012 set_view_attr(view, type);
2013 /* Using waddch() instead of waddnstr() ensures that
2014 * they'll be rendered correctly for the cursor line. */
2015 for (i = skip; i < size; i++)
2016 waddch(view->win, graphic[i]);
2018 view->col += size;
2019 if (size < max && skip <= size)
2020 waddch(view->win, ' ');
2021 view->col++;
2023 return view->width + view->yoffset <= view->col;
2024 }
2026 static bool
2027 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
2028 {
2029 int max = MIN(view->width + view->yoffset - view->col, len);
2030 int col;
2032 if (text)
2033 col = draw_chars(view, type, text, max - 1, trim);
2034 else
2035 col = draw_space(view, type, max - 1, max - 1);
2037 view->col += col;
2038 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
2039 return view->width + view->yoffset <= view->col;
2040 }
2042 static bool
2043 draw_date(struct view *view, struct time *time)
2044 {
2045 const char *date = mkdate(time, opt_date);
2046 int cols = opt_date == DATE_SHORT ? DATE_SHORT_COLS : DATE_COLS;
2048 return draw_field(view, LINE_DATE, date, cols, FALSE);
2049 }
2051 static bool
2052 draw_author(struct view *view, const char *author)
2053 {
2054 bool trim = opt_author_cols == 0 || opt_author_cols > 5;
2055 bool abbreviate = opt_author == AUTHOR_ABBREVIATED || !trim;
2057 if (abbreviate && author)
2058 author = get_author_initials(author);
2060 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
2061 }
2063 static bool
2064 draw_mode(struct view *view, mode_t mode)
2065 {
2066 const char *str;
2068 if (S_ISDIR(mode))
2069 str = "drwxr-xr-x";
2070 else if (S_ISLNK(mode))
2071 str = "lrwxrwxrwx";
2072 else if (S_ISGITLINK(mode))
2073 str = "m---------";
2074 else if (S_ISREG(mode) && mode & S_IXUSR)
2075 str = "-rwxr-xr-x";
2076 else if (S_ISREG(mode))
2077 str = "-rw-r--r--";
2078 else
2079 str = "----------";
2081 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
2082 }
2084 static bool
2085 draw_lineno(struct view *view, unsigned int lineno)
2086 {
2087 char number[10];
2088 int digits3 = view->digits < 3 ? 3 : view->digits;
2089 int max = MIN(view->width + view->yoffset - view->col, digits3);
2090 char *text = NULL;
2091 chtype separator = opt_line_graphics ? ACS_VLINE : '|';
2093 lineno += view->offset + 1;
2094 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2095 static char fmt[] = "%1ld";
2097 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2098 if (string_format(number, fmt, lineno))
2099 text = number;
2100 }
2101 if (text)
2102 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2103 else
2104 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
2105 return draw_graphic(view, LINE_DEFAULT, &separator, 1);
2106 }
2108 static bool
2109 draw_view_line(struct view *view, unsigned int lineno)
2110 {
2111 struct line *line;
2112 bool selected = (view->offset + lineno == view->lineno);
2114 assert(view_is_displayed(view));
2116 if (view->offset + lineno >= view->lines)
2117 return FALSE;
2119 line = &view->line[view->offset + lineno];
2121 wmove(view->win, lineno, 0);
2122 if (line->cleareol)
2123 wclrtoeol(view->win);
2124 view->col = 0;
2125 view->curline = line;
2126 view->curtype = LINE_NONE;
2127 line->selected = FALSE;
2128 line->dirty = line->cleareol = 0;
2130 if (selected) {
2131 set_view_attr(view, LINE_CURSOR);
2132 line->selected = TRUE;
2133 view->ops->select(view, line);
2134 }
2136 return view->ops->draw(view, line, lineno);
2137 }
2139 static void
2140 redraw_view_dirty(struct view *view)
2141 {
2142 bool dirty = FALSE;
2143 int lineno;
2145 for (lineno = 0; lineno < view->height; lineno++) {
2146 if (view->offset + lineno >= view->lines)
2147 break;
2148 if (!view->line[view->offset + lineno].dirty)
2149 continue;
2150 dirty = TRUE;
2151 if (!draw_view_line(view, lineno))
2152 break;
2153 }
2155 if (!dirty)
2156 return;
2157 wnoutrefresh(view->win);
2158 }
2160 static void
2161 redraw_view_from(struct view *view, int lineno)
2162 {
2163 assert(0 <= lineno && lineno < view->height);
2165 for (; lineno < view->height; lineno++) {
2166 if (!draw_view_line(view, lineno))
2167 break;
2168 }
2170 wnoutrefresh(view->win);
2171 }
2173 static void
2174 redraw_view(struct view *view)
2175 {
2176 werase(view->win);
2177 redraw_view_from(view, 0);
2178 }
2181 static void
2182 update_view_title(struct view *view)
2183 {
2184 char buf[SIZEOF_STR];
2185 char state[SIZEOF_STR];
2186 size_t bufpos = 0, statelen = 0;
2187 WINDOW *window = display[0] == view ? display_title[0] : display_title[1];
2189 assert(view_is_displayed(view));
2191 if (view->type != VIEW_STATUS && view->lines) {
2192 unsigned int view_lines = view->offset + view->height;
2193 unsigned int lines = view->lines
2194 ? MIN(view_lines, view->lines) * 100 / view->lines
2195 : 0;
2197 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2198 view->ops->type,
2199 view->lineno + 1,
2200 view->lines,
2201 lines);
2203 }
2205 if (view->pipe) {
2206 time_t secs = time(NULL) - view->start_time;
2208 /* Three git seconds are a long time ... */
2209 if (secs > 2)
2210 string_format_from(state, &statelen, " loading %lds", secs);
2211 }
2213 string_format_from(buf, &bufpos, "[%s]", view->name);
2214 if (*view->ref && bufpos < view->width) {
2215 size_t refsize = strlen(view->ref);
2216 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2218 if (minsize < view->width)
2219 refsize = view->width - minsize + 7;
2220 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2221 }
2223 if (statelen && bufpos < view->width) {
2224 string_format_from(buf, &bufpos, "%s", state);
2225 }
2227 if (view == display[current_view])
2228 wbkgdset(window, get_line_attr(LINE_TITLE_FOCUS));
2229 else
2230 wbkgdset(window, get_line_attr(LINE_TITLE_BLUR));
2232 mvwaddnstr(window, 0, 0, buf, bufpos);
2233 wclrtoeol(window);
2234 wnoutrefresh(window);
2235 }
2237 static int
2238 apply_step(double step, int value)
2239 {
2240 if (step >= 1)
2241 return (int) step;
2242 value *= step + 0.01;
2243 return value ? value : 1;
2244 }
2246 static void
2247 resize_display(void)
2248 {
2249 int offset, i;
2250 struct view *base = display[0];
2251 struct view *view = display[1] ? display[1] : display[0];
2253 /* Setup window dimensions */
2255 getmaxyx(stdscr, base->height, base->width);
2257 /* Make room for the status window. */
2258 base->height -= 1;
2260 if (view != base) {
2261 /* Horizontal split. */
2262 view->width = base->width;
2263 view->height = apply_step(opt_scale_split_view, base->height);
2264 view->height = MAX(view->height, MIN_VIEW_HEIGHT);
2265 view->height = MIN(view->height, base->height - MIN_VIEW_HEIGHT);
2266 base->height -= view->height;
2268 /* Make room for the title bar. */
2269 view->height -= 1;
2270 }
2272 /* Make room for the title bar. */
2273 base->height -= 1;
2275 offset = 0;
2277 foreach_displayed_view (view, i) {
2278 if (!display_win[i]) {
2279 display_win[i] = newwin(view->height, view->width, offset, 0);
2280 if (!display_win[i])
2281 die("Failed to create %s view", view->name);
2283 scrollok(display_win[i], FALSE);
2285 display_title[i] = newwin(1, view->width, offset + view->height, 0);
2286 if (!display_title[i])
2287 die("Failed to create title window");
2289 } else {
2290 wresize(display_win[i], view->height, view->width);
2291 mvwin(display_win[i], offset, 0);
2292 mvwin(display_title[i], offset + view->height, 0);
2293 }
2295 view->win = display_win[i];
2297 offset += view->height + 1;
2298 }
2299 }
2301 static void
2302 redraw_display(bool clear)
2303 {
2304 struct view *view;
2305 int i;
2307 foreach_displayed_view (view, i) {
2308 if (clear)
2309 wclear(view->win);
2310 redraw_view(view);
2311 update_view_title(view);
2312 }
2313 }
2316 /*
2317 * Option management
2318 */
2320 #define TOGGLE_MENU \
2321 TOGGLE_(LINENO, '.', "line numbers", &opt_line_number, NULL) \
2322 TOGGLE_(DATE, 'D', "dates", &opt_date, date_map) \
2323 TOGGLE_(AUTHOR, 'A', "author names", &opt_author, author_map) \
2324 TOGGLE_(REV_GRAPH, 'g', "revision graph", &opt_rev_graph, NULL) \
2325 TOGGLE_(REFS, 'F', "reference display", &opt_show_refs, NULL)
2327 static void
2328 toggle_option(enum request request)
2329 {
2330 const struct {
2331 enum request request;
2332 const struct enum_map *map;
2333 size_t map_size;
2334 } data[] = {
2335 #define TOGGLE_(id, key, help, value, map) { REQ_TOGGLE_ ## id, map, ARRAY_SIZE(map) },
2336 TOGGLE_MENU
2337 #undef TOGGLE_
2338 };
2339 const struct menu_item menu[] = {
2340 #define TOGGLE_(id, key, help, value, map) { key, help, value },
2341 TOGGLE_MENU
2342 #undef TOGGLE_
2343 { 0 }
2344 };
2345 int i = 0;
2347 if (request == REQ_OPTIONS) {
2348 if (!prompt_menu("Toggle option", menu, &i))
2349 return;
2350 } else {
2351 while (i < ARRAY_SIZE(data) && data[i].request != request)
2352 i++;
2353 if (i >= ARRAY_SIZE(data))
2354 die("Invalid request (%d)", request);
2355 }
2357 if (data[i].map != NULL) {
2358 unsigned int *opt = menu[i].data;
2360 *opt = (*opt + 1) % data[i].map_size;
2361 redraw_display(FALSE);
2362 report("Displaying %s %s", enum_name(data[i].map[*opt]), menu[i].text);
2364 } else {
2365 bool *option = menu[i].data;
2367 *option = !*option;
2368 redraw_display(FALSE);
2369 report("%sabling %s", *option ? "En" : "Dis", menu[i].text);
2370 }
2371 }
2373 static void
2374 maximize_view(struct view *view)
2375 {
2376 memset(display, 0, sizeof(display));
2377 current_view = 0;
2378 display[current_view] = view;
2379 resize_display();
2380 redraw_display(FALSE);
2381 report("");
2382 }
2385 /*
2386 * Navigation
2387 */
2389 static bool
2390 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2391 {
2392 if (lineno >= view->lines)
2393 lineno = view->lines > 0 ? view->lines - 1 : 0;
2395 if (offset > lineno || offset + view->height <= lineno) {
2396 unsigned long half = view->height / 2;
2398 if (lineno > half)
2399 offset = lineno - half;
2400 else
2401 offset = 0;
2402 }
2404 if (offset != view->offset || lineno != view->lineno) {
2405 view->offset = offset;
2406 view->lineno = lineno;
2407 return TRUE;
2408 }
2410 return FALSE;
2411 }
2413 /* Scrolling backend */
2414 static void
2415 do_scroll_view(struct view *view, int lines)
2416 {
2417 bool redraw_current_line = FALSE;
2419 /* The rendering expects the new offset. */
2420 view->offset += lines;
2422 assert(0 <= view->offset && view->offset < view->lines);
2423 assert(lines);
2425 /* Move current line into the view. */
2426 if (view->lineno < view->offset) {
2427 view->lineno = view->offset;
2428 redraw_current_line = TRUE;
2429 } else if (view->lineno >= view->offset + view->height) {
2430 view->lineno = view->offset + view->height - 1;
2431 redraw_current_line = TRUE;
2432 }
2434 assert(view->offset <= view->lineno && view->lineno < view->lines);
2436 /* Redraw the whole screen if scrolling is pointless. */
2437 if (view->height < ABS(lines)) {
2438 redraw_view(view);
2440 } else {
2441 int line = lines > 0 ? view->height - lines : 0;
2442 int end = line + ABS(lines);
2444 scrollok(view->win, TRUE);
2445 wscrl(view->win, lines);
2446 scrollok(view->win, FALSE);
2448 while (line < end && draw_view_line(view, line))
2449 line++;
2451 if (redraw_current_line)
2452 draw_view_line(view, view->lineno - view->offset);
2453 wnoutrefresh(view->win);
2454 }
2456 view->has_scrolled = TRUE;
2457 report("");
2458 }
2460 /* Scroll frontend */
2461 static void
2462 scroll_view(struct view *view, enum request request)
2463 {
2464 int lines = 1;
2466 assert(view_is_displayed(view));
2468 switch (request) {
2469 case REQ_SCROLL_FIRST_COL:
2470 view->yoffset = 0;
2471 redraw_view_from(view, 0);
2472 report("");
2473 return;
2474 case REQ_SCROLL_LEFT:
2475 if (view->yoffset == 0) {
2476 report("Cannot scroll beyond the first column");
2477 return;
2478 }
2479 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2480 view->yoffset = 0;
2481 else
2482 view->yoffset -= apply_step(opt_hscroll, view->width);
2483 redraw_view_from(view, 0);
2484 report("");
2485 return;
2486 case REQ_SCROLL_RIGHT:
2487 view->yoffset += apply_step(opt_hscroll, view->width);
2488 redraw_view(view);
2489 report("");
2490 return;
2491 case REQ_SCROLL_PAGE_DOWN:
2492 lines = view->height;
2493 case REQ_SCROLL_LINE_DOWN:
2494 if (view->offset + lines > view->lines)
2495 lines = view->lines - view->offset;
2497 if (lines == 0 || view->offset + view->height >= view->lines) {
2498 report("Cannot scroll beyond the last line");
2499 return;
2500 }
2501 break;
2503 case REQ_SCROLL_PAGE_UP:
2504 lines = view->height;
2505 case REQ_SCROLL_LINE_UP:
2506 if (lines > view->offset)
2507 lines = view->offset;
2509 if (lines == 0) {
2510 report("Cannot scroll beyond the first line");
2511 return;
2512 }
2514 lines = -lines;
2515 break;
2517 default:
2518 die("request %d not handled in switch", request);
2519 }
2521 do_scroll_view(view, lines);
2522 }
2524 /* Cursor moving */
2525 static void
2526 move_view(struct view *view, enum request request)
2527 {
2528 int scroll_steps = 0;
2529 int steps;
2531 switch (request) {
2532 case REQ_MOVE_FIRST_LINE:
2533 steps = -view->lineno;
2534 break;
2536 case REQ_MOVE_LAST_LINE:
2537 steps = view->lines - view->lineno - 1;
2538 break;
2540 case REQ_MOVE_PAGE_UP:
2541 steps = view->height > view->lineno
2542 ? -view->lineno : -view->height;
2543 break;
2545 case REQ_MOVE_PAGE_DOWN:
2546 steps = view->lineno + view->height >= view->lines
2547 ? view->lines - view->lineno - 1 : view->height;
2548 break;
2550 case REQ_MOVE_UP:
2551 steps = -1;
2552 break;
2554 case REQ_MOVE_DOWN:
2555 steps = 1;
2556 break;
2558 default:
2559 die("request %d not handled in switch", request);
2560 }
2562 if (steps <= 0 && view->lineno == 0) {
2563 report("Cannot move beyond the first line");
2564 return;
2566 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2567 report("Cannot move beyond the last line");
2568 return;
2569 }
2571 /* Move the current line */
2572 view->lineno += steps;
2573 assert(0 <= view->lineno && view->lineno < view->lines);
2575 /* Check whether the view needs to be scrolled */
2576 if (view->lineno < view->offset ||
2577 view->lineno >= view->offset + view->height) {
2578 scroll_steps = steps;
2579 if (steps < 0 && -steps > view->offset) {
2580 scroll_steps = -view->offset;
2582 } else if (steps > 0) {
2583 if (view->lineno == view->lines - 1 &&
2584 view->lines > view->height) {
2585 scroll_steps = view->lines - view->offset - 1;
2586 if (scroll_steps >= view->height)
2587 scroll_steps -= view->height - 1;
2588 }
2589 }
2590 }
2592 if (!view_is_displayed(view)) {
2593 view->offset += scroll_steps;
2594 assert(0 <= view->offset && view->offset < view->lines);
2595 view->ops->select(view, &view->line[view->lineno]);
2596 return;
2597 }
2599 /* Repaint the old "current" line if we be scrolling */
2600 if (ABS(steps) < view->height)
2601 draw_view_line(view, view->lineno - steps - view->offset);
2603 if (scroll_steps) {
2604 do_scroll_view(view, scroll_steps);
2605 return;
2606 }
2608 /* Draw the current line */
2609 draw_view_line(view, view->lineno - view->offset);
2611 wnoutrefresh(view->win);
2612 report("");
2613 }
2616 /*
2617 * Searching
2618 */
2620 static void search_view(struct view *view, enum request request);
2622 static bool
2623 grep_text(struct view *view, const char *text[])
2624 {
2625 regmatch_t pmatch;
2626 size_t i;
2628 for (i = 0; text[i]; i++)
2629 if (*text[i] &&
2630 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2631 return TRUE;
2632 return FALSE;
2633 }
2635 static void
2636 select_view_line(struct view *view, unsigned long lineno)
2637 {
2638 unsigned long old_lineno = view->lineno;
2639 unsigned long old_offset = view->offset;
2641 if (goto_view_line(view, view->offset, lineno)) {
2642 if (view_is_displayed(view)) {
2643 if (old_offset != view->offset) {
2644 redraw_view(view);
2645 } else {
2646 draw_view_line(view, old_lineno - view->offset);
2647 draw_view_line(view, view->lineno - view->offset);
2648 wnoutrefresh(view->win);
2649 }
2650 } else {
2651 view->ops->select(view, &view->line[view->lineno]);
2652 }
2653 }
2654 }
2656 static void
2657 find_next(struct view *view, enum request request)
2658 {
2659 unsigned long lineno = view->lineno;
2660 int direction;
2662 if (!*view->grep) {
2663 if (!*opt_search)
2664 report("No previous search");
2665 else
2666 search_view(view, request);
2667 return;
2668 }
2670 switch (request) {
2671 case REQ_SEARCH:
2672 case REQ_FIND_NEXT:
2673 direction = 1;
2674 break;
2676 case REQ_SEARCH_BACK:
2677 case REQ_FIND_PREV:
2678 direction = -1;
2679 break;
2681 default:
2682 return;
2683 }
2685 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2686 lineno += direction;
2688 /* Note, lineno is unsigned long so will wrap around in which case it
2689 * will become bigger than view->lines. */
2690 for (; lineno < view->lines; lineno += direction) {
2691 if (view->ops->grep(view, &view->line[lineno])) {
2692 select_view_line(view, lineno);
2693 report("Line %ld matches '%s'", lineno + 1, view->grep);
2694 return;
2695 }
2696 }
2698 report("No match found for '%s'", view->grep);
2699 }
2701 static void
2702 search_view(struct view *view, enum request request)
2703 {
2704 int regex_err;
2706 if (view->regex) {
2707 regfree(view->regex);
2708 *view->grep = 0;
2709 } else {
2710 view->regex = calloc(1, sizeof(*view->regex));
2711 if (!view->regex)
2712 return;
2713 }
2715 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2716 if (regex_err != 0) {
2717 char buf[SIZEOF_STR] = "unknown error";
2719 regerror(regex_err, view->regex, buf, sizeof(buf));
2720 report("Search failed: %s", buf);
2721 return;
2722 }
2724 string_copy(view->grep, opt_search);
2726 find_next(view, request);
2727 }
2729 /*
2730 * Incremental updating
2731 */
2733 static void
2734 reset_view(struct view *view)
2735 {
2736 int i;
2738 for (i = 0; i < view->lines; i++)
2739 free(view->line[i].data);
2740 free(view->line);
2742 view->p_offset = view->offset;
2743 view->p_yoffset = view->yoffset;
2744 view->p_lineno = view->lineno;
2746 view->line = NULL;
2747 view->offset = 0;
2748 view->yoffset = 0;
2749 view->lines = 0;
2750 view->lineno = 0;
2751 view->vid[0] = 0;
2752 view->update_secs = 0;
2753 }
2755 static const char *
2756 format_arg(const char *name)
2757 {
2758 static struct {
2759 const char *name;
2760 size_t namelen;
2761 const char *value;
2762 const char *value_if_empty;
2763 } vars[] = {
2764 #define FORMAT_VAR(name, value, value_if_empty) \
2765 { name, STRING_SIZE(name), value, value_if_empty }
2766 FORMAT_VAR("%(directory)", opt_path, ""),
2767 FORMAT_VAR("%(file)", opt_file, ""),
2768 FORMAT_VAR("%(ref)", opt_ref, "HEAD"),
2769 FORMAT_VAR("%(head)", ref_head, ""),
2770 FORMAT_VAR("%(commit)", ref_commit, ""),
2771 FORMAT_VAR("%(blob)", ref_blob, ""),
2772 FORMAT_VAR("%(branch)", ref_branch, ""),
2773 };
2774 int i;
2776 for (i = 0; i < ARRAY_SIZE(vars); i++)
2777 if (!strncmp(name, vars[i].name, vars[i].namelen))
2778 return *vars[i].value ? vars[i].value : vars[i].value_if_empty;
2780 report("Unknown replacement: `%s`", name);
2781 return NULL;
2782 }
2784 static bool
2785 format_argv(const char ***dst_argv, const char *src_argv[], bool replace, bool first)
2786 {
2787 char buf[SIZEOF_STR];
2788 int argc;
2790 argv_free(*dst_argv);
2792 for (argc = 0; src_argv[argc]; argc++) {
2793 const char *arg = src_argv[argc];
2794 size_t bufpos = 0;
2796 if (!strcmp(arg, "%(fileargs)")) {
2797 if (!argv_append_array(dst_argv, opt_file_argv))
2798 break;
2799 continue;
2801 } else if (!strcmp(arg, "%(diffargs)")) {
2802 if (!argv_append_array(dst_argv, opt_diff_argv))
2803 break;
2804 continue;
2806 } else if (!strcmp(arg, "%(revargs)") ||
2807 (first && !strcmp(arg, "%(commit)"))) {
2808 if (!argv_append_array(dst_argv, opt_rev_argv))
2809 break;
2810 continue;
2811 }
2813 while (arg) {
2814 char *next = strstr(arg, "%(");
2815 int len = next - arg;
2816 const char *value;
2818 if (!next || !replace) {
2819 len = strlen(arg);
2820 value = "";
2822 } else {
2823 value = format_arg(next);
2825 if (!value) {
2826 return FALSE;
2827 }
2828 }
2830 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2831 return FALSE;
2833 arg = next && replace ? strchr(next, ')') + 1 : NULL;
2834 }
2836 if (!argv_append(dst_argv, buf))
2837 break;
2838 }
2840 return src_argv[argc] == NULL;
2841 }
2843 static bool
2844 restore_view_position(struct view *view)
2845 {
2846 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2847 return FALSE;
2849 /* Changing the view position cancels the restoring. */
2850 /* FIXME: Changing back to the first line is not detected. */
2851 if (view->offset != 0 || view->lineno != 0) {
2852 view->p_restore = FALSE;
2853 return FALSE;
2854 }
2856 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2857 view_is_displayed(view))
2858 werase(view->win);
2860 view->yoffset = view->p_yoffset;
2861 view->p_restore = FALSE;
2863 return TRUE;
2864 }
2866 static void
2867 end_update(struct view *view, bool force)
2868 {
2869 if (!view->pipe)
2870 return;
2871 while (!view->ops->read(view, NULL))
2872 if (!force)
2873 return;
2874 if (force)
2875 io_kill(view->pipe);
2876 io_done(view->pipe);
2877 view->pipe = NULL;
2878 }
2880 static void
2881 setup_update(struct view *view, const char *vid)
2882 {
2883 reset_view(view);
2884 string_copy_rev(view->vid, vid);
2885 view->pipe = &view->io;
2886 view->start_time = time(NULL);
2887 }
2889 static bool
2890 prepare_io(struct view *view, const char *dir, const char *argv[], bool replace)
2891 {
2892 view->dir = dir;
2893 return format_argv(&view->argv, argv, replace, !view->prev);
2894 }
2896 static bool
2897 prepare_update(struct view *view, const char *argv[], const char *dir)
2898 {
2899 if (view->pipe)
2900 end_update(view, TRUE);
2901 return prepare_io(view, dir, argv, FALSE);
2902 }
2904 static bool
2905 start_update(struct view *view, const char **argv, const char *dir)
2906 {
2907 if (view->pipe)
2908 io_done(view->pipe);
2909 return prepare_io(view, dir, argv, FALSE) &&
2910 io_run(&view->io, IO_RD, dir, view->argv);
2911 }
2913 static bool
2914 prepare_update_file(struct view *view, const char *name)
2915 {
2916 if (view->pipe)
2917 end_update(view, TRUE);
2918 argv_free(view->argv);
2919 return io_open(&view->io, "%s/%s", opt_cdup[0] ? opt_cdup : ".", name);
2920 }
2922 static bool
2923 begin_update(struct view *view, bool refresh)
2924 {
2925 if (view->pipe)
2926 end_update(view, TRUE);
2928 if (!refresh) {
2929 if (view->ops->prepare) {
2930 if (!view->ops->prepare(view))
2931 return FALSE;
2932 } else if (!prepare_io(view, NULL, view->ops->argv, TRUE)) {
2933 return FALSE;
2934 }
2936 /* Put the current ref_* value to the view title ref
2937 * member. This is needed by the blob view. Most other
2938 * views sets it automatically after loading because the
2939 * first line is a commit line. */
2940 string_copy_rev(view->ref, view->id);
2941 }
2943 if (view->argv && view->argv[0] &&
2944 !io_run(&view->io, IO_RD, view->dir, view->argv))
2945 return FALSE;
2947 setup_update(view, view->id);
2949 return TRUE;
2950 }
2952 static bool
2953 update_view(struct view *view)
2954 {
2955 char out_buffer[BUFSIZ * 2];
2956 char *line;
2957 /* Clear the view and redraw everything since the tree sorting
2958 * might have rearranged things. */
2959 bool redraw = view->lines == 0;
2960 bool can_read = TRUE;
2962 if (!view->pipe)
2963 return TRUE;
2965 if (!io_can_read(view->pipe)) {
2966 if (view->lines == 0 && view_is_displayed(view)) {
2967 time_t secs = time(NULL) - view->start_time;
2969 if (secs > 1 && secs > view->update_secs) {
2970 if (view->update_secs == 0)
2971 redraw_view(view);
2972 update_view_title(view);
2973 view->update_secs = secs;
2974 }
2975 }
2976 return TRUE;
2977 }
2979 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2980 if (opt_iconv_in != ICONV_NONE) {
2981 ICONV_CONST char *inbuf = line;
2982 size_t inlen = strlen(line) + 1;
2984 char *outbuf = out_buffer;
2985 size_t outlen = sizeof(out_buffer);
2987 size_t ret;
2989 ret = iconv(opt_iconv_in, &inbuf, &inlen, &outbuf, &outlen);
2990 if (ret != (size_t) -1)
2991 line = out_buffer;
2992 }
2994 if (!view->ops->read(view, line)) {
2995 report("Allocation failure");
2996 end_update(view, TRUE);
2997 return FALSE;
2998 }
2999 }
3001 {
3002 unsigned long lines = view->lines;
3003 int digits;
3005 for (digits = 0; lines; digits++)
3006 lines /= 10;
3008 /* Keep the displayed view in sync with line number scaling. */
3009 if (digits != view->digits) {
3010 view->digits = digits;
3011 if (opt_line_number || view->type == VIEW_BLAME)
3012 redraw = TRUE;
3013 }
3014 }
3016 if (io_error(view->pipe)) {
3017 report("Failed to read: %s", io_strerror(view->pipe));
3018 end_update(view, TRUE);
3020 } else if (io_eof(view->pipe)) {
3021 if (view_is_displayed(view))
3022 report("");
3023 end_update(view, FALSE);
3024 }
3026 if (restore_view_position(view))
3027 redraw = TRUE;
3029 if (!view_is_displayed(view))
3030 return TRUE;
3032 if (redraw)
3033 redraw_view_from(view, 0);
3034 else
3035 redraw_view_dirty(view);
3037 /* Update the title _after_ the redraw so that if the redraw picks up a
3038 * commit reference in view->ref it'll be available here. */
3039 update_view_title(view);
3040 return TRUE;
3041 }
3043 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
3045 static struct line *
3046 add_line_data(struct view *view, void *data, enum line_type type)
3047 {
3048 struct line *line;
3050 if (!realloc_lines(&view->line, view->lines, 1))
3051 return NULL;
3053 line = &view->line[view->lines++];
3054 memset(line, 0, sizeof(*line));
3055 line->type = type;
3056 line->data = data;
3057 line->dirty = 1;
3059 return line;
3060 }
3062 static struct line *
3063 add_line_text(struct view *view, const char *text, enum line_type type)
3064 {
3065 char *data = text ? strdup(text) : NULL;
3067 return data ? add_line_data(view, data, type) : NULL;
3068 }
3070 static struct line *
3071 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
3072 {
3073 char buf[SIZEOF_STR];
3074 va_list args;
3076 va_start(args, fmt);
3077 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
3078 buf[0] = 0;
3079 va_end(args);
3081 return buf[0] ? add_line_text(view, buf, type) : NULL;
3082 }
3084 /*
3085 * View opening
3086 */
3088 enum open_flags {
3089 OPEN_DEFAULT = 0, /* Use default view switching. */
3090 OPEN_SPLIT = 1, /* Split current view. */
3091 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
3092 OPEN_REFRESH = 16, /* Refresh view using previous command. */
3093 OPEN_PREPARED = 32, /* Open already prepared command. */
3094 };
3096 static void
3097 open_view(struct view *prev, enum request request, enum open_flags flags)
3098 {
3099 bool split = !!(flags & OPEN_SPLIT);
3100 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
3101 bool nomaximize = !!(flags & OPEN_REFRESH);
3102 struct view *view = VIEW(request);
3103 int nviews = displayed_views();
3104 struct view *base_view = display[0];
3106 if (view == prev && nviews == 1 && !reload) {
3107 report("Already in %s view", view->name);
3108 return;
3109 }
3111 if (view->git_dir && !opt_git_dir[0]) {
3112 report("The %s view is disabled in pager view", view->name);
3113 return;
3114 }
3116 if (split) {
3117 display[1] = view;
3118 current_view = 1;
3119 view->parent = prev;
3120 } else if (!nomaximize) {
3121 /* Maximize the current view. */
3122 memset(display, 0, sizeof(display));
3123 current_view = 0;
3124 display[current_view] = view;
3125 }
3127 /* No prev signals that this is the first loaded view. */
3128 if (prev && view != prev) {
3129 view->prev = prev;
3130 }
3132 /* Resize the view when switching between split- and full-screen,
3133 * or when switching between two different full-screen views. */
3134 if (nviews != displayed_views() ||
3135 (nviews == 1 && base_view != display[0]))
3136 resize_display();
3138 if (view->ops->open) {
3139 if (view->pipe)
3140 end_update(view, TRUE);
3141 if (!view->ops->open(view)) {
3142 report("Failed to load %s view", view->name);
3143 return;
3144 }
3145 restore_view_position(view);
3147 } else if ((reload || strcmp(view->vid, view->id)) &&
3148 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3149 report("Failed to load %s view", view->name);
3150 return;
3151 }
3153 if (split && prev->lineno - prev->offset >= prev->height) {
3154 /* Take the title line into account. */
3155 int lines = prev->lineno - prev->offset - prev->height + 1;
3157 /* Scroll the view that was split if the current line is
3158 * outside the new limited view. */
3159 do_scroll_view(prev, lines);
3160 }
3162 if (prev && view != prev && split && view_is_displayed(prev)) {
3163 /* "Blur" the previous view. */
3164 update_view_title(prev);
3165 }
3167 if (view->pipe && view->lines == 0) {
3168 /* Clear the old view and let the incremental updating refill
3169 * the screen. */
3170 werase(view->win);
3171 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3172 report("");
3173 } else if (view_is_displayed(view)) {
3174 redraw_view(view);
3175 report("");
3176 }
3177 }
3179 static void
3180 open_external_viewer(const char *argv[], const char *dir)
3181 {
3182 def_prog_mode(); /* save current tty modes */
3183 endwin(); /* restore original tty modes */
3184 io_run_fg(argv, dir);
3185 fprintf(stderr, "Press Enter to continue");
3186 getc(opt_tty);
3187 reset_prog_mode();
3188 redraw_display(TRUE);
3189 }
3191 static void
3192 open_mergetool(const char *file)
3193 {
3194 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3196 open_external_viewer(mergetool_argv, opt_cdup);
3197 }
3199 static void
3200 open_editor(const char *file)
3201 {
3202 const char *editor_argv[] = { "vi", file, NULL };
3203 const char *editor;
3205 editor = getenv("GIT_EDITOR");
3206 if (!editor && *opt_editor)
3207 editor = opt_editor;
3208 if (!editor)
3209 editor = getenv("VISUAL");
3210 if (!editor)
3211 editor = getenv("EDITOR");
3212 if (!editor)
3213 editor = "vi";
3215 editor_argv[0] = editor;
3216 open_external_viewer(editor_argv, opt_cdup);
3217 }
3219 static void
3220 open_run_request(enum request request)
3221 {
3222 struct run_request *req = get_run_request(request);
3223 const char **argv = NULL;
3225 if (!req) {
3226 report("Unknown run request");
3227 return;
3228 }
3230 if (format_argv(&argv, req->argv, TRUE, FALSE))
3231 open_external_viewer(argv, NULL);
3232 if (argv)
3233 argv_free(argv);
3234 free(argv);
3235 }
3237 /*
3238 * User request switch noodle
3239 */
3241 static int
3242 view_driver(struct view *view, enum request request)
3243 {
3244 int i;
3246 if (request == REQ_NONE)
3247 return TRUE;
3249 if (request > REQ_NONE) {
3250 open_run_request(request);
3251 view_request(view, REQ_REFRESH);
3252 return TRUE;
3253 }
3255 request = view_request(view, request);
3256 if (request == REQ_NONE)
3257 return TRUE;
3259 switch (request) {
3260 case REQ_MOVE_UP:
3261 case REQ_MOVE_DOWN:
3262 case REQ_MOVE_PAGE_UP:
3263 case REQ_MOVE_PAGE_DOWN:
3264 case REQ_MOVE_FIRST_LINE:
3265 case REQ_MOVE_LAST_LINE:
3266 move_view(view, request);
3267 break;
3269 case REQ_SCROLL_FIRST_COL:
3270 case REQ_SCROLL_LEFT:
3271 case REQ_SCROLL_RIGHT:
3272 case REQ_SCROLL_LINE_DOWN:
3273 case REQ_SCROLL_LINE_UP:
3274 case REQ_SCROLL_PAGE_DOWN:
3275 case REQ_SCROLL_PAGE_UP:
3276 scroll_view(view, request);
3277 break;
3279 case REQ_VIEW_BLAME:
3280 if (!opt_file[0]) {
3281 report("No file chosen, press %s to open tree view",
3282 get_key(view->keymap, REQ_VIEW_TREE));
3283 break;
3284 }
3285 open_view(view, request, OPEN_DEFAULT);
3286 break;
3288 case REQ_VIEW_BLOB:
3289 if (!ref_blob[0]) {
3290 report("No file chosen, press %s to open tree view",
3291 get_key(view->keymap, REQ_VIEW_TREE));
3292 break;
3293 }
3294 open_view(view, request, OPEN_DEFAULT);
3295 break;
3297 case REQ_VIEW_PAGER:
3298 if (view == NULL) {
3299 if (!io_open(&VIEW(REQ_VIEW_PAGER)->io, ""))
3300 die("Failed to open stdin");
3301 open_view(view, request, OPEN_PREPARED);
3302 break;
3303 }
3305 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3306 report("No pager content, press %s to run command from prompt",
3307 get_key(view->keymap, REQ_PROMPT));
3308 break;
3309 }
3310 open_view(view, request, OPEN_DEFAULT);
3311 break;
3313 case REQ_VIEW_STAGE:
3314 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3315 report("No stage content, press %s to open the status view and choose file",
3316 get_key(view->keymap, REQ_VIEW_STATUS));
3317 break;
3318 }
3319 open_view(view, request, OPEN_DEFAULT);
3320 break;
3322 case REQ_VIEW_STATUS:
3323 if (opt_is_inside_work_tree == FALSE) {
3324 report("The status view requires a working tree");
3325 break;
3326 }
3327 open_view(view, request, OPEN_DEFAULT);
3328 break;
3330 case REQ_VIEW_MAIN:
3331 case REQ_VIEW_DIFF:
3332 case REQ_VIEW_LOG:
3333 case REQ_VIEW_TREE:
3334 case REQ_VIEW_HELP:
3335 case REQ_VIEW_BRANCH:
3336 open_view(view, request, OPEN_DEFAULT);
3337 break;
3339 case REQ_NEXT:
3340 case REQ_PREVIOUS:
3341 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3343 if (view->parent) {
3344 int line;
3346 view = view->parent;
3347 line = view->lineno;
3348 move_view(view, request);
3349 if (view_is_displayed(view))
3350 update_view_title(view);
3351 if (line != view->lineno)
3352 view_request(view, REQ_ENTER);
3353 } else {
3354 move_view(view, request);
3355 }
3356 break;
3358 case REQ_VIEW_NEXT:
3359 {
3360 int nviews = displayed_views();
3361 int next_view = (current_view + 1) % nviews;
3363 if (next_view == current_view) {
3364 report("Only one view is displayed");
3365 break;
3366 }
3368 current_view = next_view;
3369 /* Blur out the title of the previous view. */
3370 update_view_title(view);
3371 report("");
3372 break;
3373 }
3374 case REQ_REFRESH:
3375 report("Refreshing is not yet supported for the %s view", view->name);
3376 break;
3378 case REQ_MAXIMIZE:
3379 if (displayed_views() == 2)
3380 maximize_view(view);
3381 break;
3383 case REQ_OPTIONS:
3384 case REQ_TOGGLE_LINENO:
3385 case REQ_TOGGLE_DATE:
3386 case REQ_TOGGLE_AUTHOR:
3387 case REQ_TOGGLE_REV_GRAPH:
3388 case REQ_TOGGLE_REFS:
3389 toggle_option(request);
3390 break;
3392 case REQ_TOGGLE_SORT_FIELD:
3393 case REQ_TOGGLE_SORT_ORDER:
3394 report("Sorting is not yet supported for the %s view", view->name);
3395 break;
3397 case REQ_SEARCH:
3398 case REQ_SEARCH_BACK:
3399 search_view(view, request);
3400 break;
3402 case REQ_FIND_NEXT:
3403 case REQ_FIND_PREV:
3404 find_next(view, request);
3405 break;
3407 case REQ_STOP_LOADING:
3408 foreach_view(view, i) {
3409 if (view->pipe)
3410 report("Stopped loading the %s view", view->name),
3411 end_update(view, TRUE);
3412 }
3413 break;
3415 case REQ_SHOW_VERSION:
3416 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3417 return TRUE;
3419 case REQ_SCREEN_REDRAW:
3420 redraw_display(TRUE);
3421 break;
3423 case REQ_EDIT:
3424 report("Nothing to edit");
3425 break;
3427 case REQ_ENTER:
3428 report("Nothing to enter");
3429 break;
3431 case REQ_VIEW_CLOSE:
3432 /* XXX: Mark closed views by letting view->prev point to the
3433 * view itself. Parents to closed view should never be
3434 * followed. */
3435 if (view->prev && view->prev != view) {
3436 maximize_view(view->prev);
3437 view->prev = view;
3438 break;
3439 }
3440 /* Fall-through */
3441 case REQ_QUIT:
3442 return FALSE;
3444 default:
3445 report("Unknown key, press %s for help",
3446 get_key(view->keymap, REQ_VIEW_HELP));
3447 return TRUE;
3448 }
3450 return TRUE;
3451 }
3454 /*
3455 * View backend utilities
3456 */
3458 enum sort_field {
3459 ORDERBY_NAME,
3460 ORDERBY_DATE,
3461 ORDERBY_AUTHOR,
3462 };
3464 struct sort_state {
3465 const enum sort_field *fields;
3466 size_t size, current;
3467 bool reverse;
3468 };
3470 #define SORT_STATE(fields) { fields, ARRAY_SIZE(fields), 0 }
3471 #define get_sort_field(state) ((state).fields[(state).current])
3472 #define sort_order(state, result) ((state).reverse ? -(result) : (result))
3474 static void
3475 sort_view(struct view *view, enum request request, struct sort_state *state,
3476 int (*compare)(const void *, const void *))
3477 {
3478 switch (request) {
3479 case REQ_TOGGLE_SORT_FIELD:
3480 state->current = (state->current + 1) % state->size;
3481 break;
3483 case REQ_TOGGLE_SORT_ORDER:
3484 state->reverse = !state->reverse;
3485 break;
3486 default:
3487 die("Not a sort request");
3488 }
3490 qsort(view->line, view->lines, sizeof(*view->line), compare);
3491 redraw_view(view);
3492 }
3494 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3496 /* Small author cache to reduce memory consumption. It uses binary
3497 * search to lookup or find place to position new entries. No entries
3498 * are ever freed. */
3499 static const char *
3500 get_author(const char *name)
3501 {
3502 static const char **authors;
3503 static size_t authors_size;
3504 int from = 0, to = authors_size - 1;
3506 while (from <= to) {
3507 size_t pos = (to + from) / 2;
3508 int cmp = strcmp(name, authors[pos]);
3510 if (!cmp)
3511 return authors[pos];
3513 if (cmp < 0)
3514 to = pos - 1;
3515 else
3516 from = pos + 1;
3517 }
3519 if (!realloc_authors(&authors, authors_size, 1))
3520 return NULL;
3521 name = strdup(name);
3522 if (!name)
3523 return NULL;
3525 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3526 authors[from] = name;
3527 authors_size++;
3529 return name;
3530 }
3532 static void
3533 parse_timesec(struct time *time, const char *sec)
3534 {
3535 time->sec = (time_t) atol(sec);
3536 }
3538 static void
3539 parse_timezone(struct time *time, const char *zone)
3540 {
3541 long tz;
3543 tz = ('0' - zone[1]) * 60 * 60 * 10;
3544 tz += ('0' - zone[2]) * 60 * 60;
3545 tz += ('0' - zone[3]) * 60 * 10;
3546 tz += ('0' - zone[4]) * 60;
3548 if (zone[0] == '-')
3549 tz = -tz;
3551 time->tz = tz;
3552 time->sec -= tz;
3553 }
3555 /* Parse author lines where the name may be empty:
3556 * author <email@address.tld> 1138474660 +0100
3557 */
3558 static void
3559 parse_author_line(char *ident, const char **author, struct time *time)
3560 {
3561 char *nameend = strchr(ident, '<');
3562 char *emailend = strchr(ident, '>');
3564 if (nameend && emailend)
3565 *nameend = *emailend = 0;
3566 ident = chomp_string(ident);
3567 if (!*ident) {
3568 if (nameend)
3569 ident = chomp_string(nameend + 1);
3570 if (!*ident)
3571 ident = "Unknown";
3572 }
3574 *author = get_author(ident);
3576 /* Parse epoch and timezone */
3577 if (emailend && emailend[1] == ' ') {
3578 char *secs = emailend + 2;
3579 char *zone = strchr(secs, ' ');
3581 parse_timesec(time, secs);
3583 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3584 parse_timezone(time, zone + 1);
3585 }
3586 }
3588 /*
3589 * Pager backend
3590 */
3592 static bool
3593 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3594 {
3595 if (opt_line_number && draw_lineno(view, lineno))
3596 return TRUE;
3598 draw_text(view, line->type, line->data);
3599 return TRUE;
3600 }
3602 static bool
3603 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3604 {
3605 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3606 char ref[SIZEOF_STR];
3608 if (!io_run_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3609 return TRUE;
3611 /* This is the only fatal call, since it can "corrupt" the buffer. */
3612 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3613 return FALSE;
3615 return TRUE;
3616 }
3618 static void
3619 add_pager_refs(struct view *view, struct line *line)
3620 {
3621 char buf[SIZEOF_STR];
3622 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3623 struct ref_list *list;
3624 size_t bufpos = 0, i;
3625 const char *sep = "Refs: ";
3626 bool is_tag = FALSE;
3628 assert(line->type == LINE_COMMIT);
3630 list = get_ref_list(commit_id);
3631 if (!list) {
3632 if (view->type == VIEW_DIFF)
3633 goto try_add_describe_ref;
3634 return;
3635 }
3637 for (i = 0; i < list->size; i++) {
3638 struct ref *ref = list->refs[i];
3639 const char *fmt = ref->tag ? "%s[%s]" :
3640 ref->remote ? "%s<%s>" : "%s%s";
3642 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3643 return;
3644 sep = ", ";
3645 if (ref->tag)
3646 is_tag = TRUE;
3647 }
3649 if (!is_tag && view->type == VIEW_DIFF) {
3650 try_add_describe_ref:
3651 /* Add <tag>-g<commit_id> "fake" reference. */
3652 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3653 return;
3654 }
3656 if (bufpos == 0)
3657 return;
3659 add_line_text(view, buf, LINE_PP_REFS);
3660 }
3662 static bool
3663 pager_read(struct view *view, char *data)
3664 {
3665 struct line *line;
3667 if (!data)
3668 return TRUE;
3670 line = add_line_text(view, data, get_line_type(data));
3671 if (!line)
3672 return FALSE;
3674 if (line->type == LINE_COMMIT &&
3675 (view->type == VIEW_DIFF ||
3676 view->type == VIEW_LOG))
3677 add_pager_refs(view, line);
3679 return TRUE;
3680 }
3682 static enum request
3683 pager_request(struct view *view, enum request request, struct line *line)
3684 {
3685 int split = 0;
3687 if (request != REQ_ENTER)
3688 return request;
3690 if (line->type == LINE_COMMIT &&
3691 (view->type == VIEW_LOG ||
3692 view->type == VIEW_PAGER)) {
3693 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3694 split = 1;
3695 }
3697 /* Always scroll the view even if it was split. That way
3698 * you can use Enter to scroll through the log view and
3699 * split open each commit diff. */
3700 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3702 /* FIXME: A minor workaround. Scrolling the view will call report("")
3703 * but if we are scrolling a non-current view this won't properly
3704 * update the view title. */
3705 if (split)
3706 update_view_title(view);
3708 return REQ_NONE;
3709 }
3711 static bool
3712 pager_grep(struct view *view, struct line *line)
3713 {
3714 const char *text[] = { line->data, NULL };
3716 return grep_text(view, text);
3717 }
3719 static void
3720 pager_select(struct view *view, struct line *line)
3721 {
3722 if (line->type == LINE_COMMIT) {
3723 char *text = (char *)line->data + STRING_SIZE("commit ");
3725 if (view->type != VIEW_PAGER)
3726 string_copy_rev(view->ref, text);
3727 string_copy_rev(ref_commit, text);
3728 }
3729 }
3731 static struct view_ops pager_ops = {
3732 "line",
3733 NULL,
3734 NULL,
3735 pager_read,
3736 pager_draw,
3737 pager_request,
3738 pager_grep,
3739 pager_select,
3740 };
3742 static const char *log_argv[SIZEOF_ARG] = {
3743 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3744 };
3746 static enum request
3747 log_request(struct view *view, enum request request, struct line *line)
3748 {
3749 switch (request) {
3750 case REQ_REFRESH:
3751 load_refs();
3752 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3753 return REQ_NONE;
3754 default:
3755 return pager_request(view, request, line);
3756 }
3757 }
3759 static struct view_ops log_ops = {
3760 "line",
3761 log_argv,
3762 NULL,
3763 pager_read,
3764 pager_draw,
3765 log_request,
3766 pager_grep,
3767 pager_select,
3768 };
3770 static const char *diff_argv[SIZEOF_ARG] = {
3771 "git", "show", "--pretty=fuller", "--no-color", "--root",
3772 "--patch-with-stat", "--find-copies-harder", "-C",
3773 "%(diffargs)", "%(commit)", "--", "%(fileargs)", NULL
3774 };
3776 static bool
3777 diff_read(struct view *view, char *data)
3778 {
3779 if (!data) {
3780 /* Fall back to retry if no diff will be shown. */
3781 if (view->lines == 0 && opt_file_argv) {
3782 int pos = argv_size(view->argv)
3783 - argv_size(opt_file_argv) - 1;
3785 if (pos > 0 && !strcmp(view->argv[pos], "--")) {
3786 for (; view->argv[pos]; pos++) {
3787 free((void *) view->argv[pos]);
3788 view->argv[pos] = NULL;
3789 }
3791 if (view->pipe)
3792 io_done(view->pipe);
3793 if (io_run(&view->io, IO_RD, view->dir, view->argv))
3794 return FALSE;
3795 }
3796 }
3797 return TRUE;
3798 }
3800 return pager_read(view, data);
3801 }
3803 static struct view_ops diff_ops = {
3804 "line",
3805 diff_argv,
3806 NULL,
3807 diff_read,
3808 pager_draw,
3809 pager_request,
3810 pager_grep,
3811 pager_select,
3812 };
3814 /*
3815 * Help backend
3816 */
3818 static bool help_keymap_hidden[ARRAY_SIZE(keymap_table)];
3820 static bool
3821 help_open_keymap_title(struct view *view, enum keymap keymap)
3822 {
3823 struct line *line;
3825 line = add_line_format(view, LINE_HELP_KEYMAP, "[%c] %s bindings",
3826 help_keymap_hidden[keymap] ? '+' : '-',
3827 enum_name(keymap_table[keymap]));
3828 if (line)
3829 line->other = keymap;
3831 return help_keymap_hidden[keymap];
3832 }
3834 static void
3835 help_open_keymap(struct view *view, enum keymap keymap)
3836 {
3837 const char *group = NULL;
3838 char buf[SIZEOF_STR];
3839 size_t bufpos;
3840 bool add_title = TRUE;
3841 int i;
3843 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3844 const char *key = NULL;
3846 if (req_info[i].request == REQ_NONE)
3847 continue;
3849 if (!req_info[i].request) {
3850 group = req_info[i].help;
3851 continue;
3852 }
3854 key = get_keys(keymap, req_info[i].request, TRUE);
3855 if (!key || !*key)
3856 continue;
3858 if (add_title && help_open_keymap_title(view, keymap))
3859 return;
3860 add_title = FALSE;
3862 if (group) {
3863 add_line_text(view, group, LINE_HELP_GROUP);
3864 group = NULL;
3865 }
3867 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s", key,
3868 enum_name(req_info[i]), req_info[i].help);
3869 }
3871 group = "External commands:";
3873 for (i = 0; i < run_requests; i++) {
3874 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3875 const char *key;
3876 int argc;
3878 if (!req || req->keymap != keymap)
3879 continue;
3881 key = get_key_name(req->key);
3882 if (!*key)
3883 key = "(no key defined)";
3885 if (add_title && help_open_keymap_title(view, keymap))
3886 return;
3887 if (group) {
3888 add_line_text(view, group, LINE_HELP_GROUP);
3889 group = NULL;
3890 }
3892 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3893 if (!string_format_from(buf, &bufpos, "%s%s",
3894 argc ? " " : "", req->argv[argc]))
3895 return;
3897 add_line_format(view, LINE_DEFAULT, " %-25s `%s`", key, buf);
3898 }
3899 }
3901 static bool
3902 help_open(struct view *view)
3903 {
3904 enum keymap keymap;
3906 reset_view(view);
3907 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3908 add_line_text(view, "", LINE_DEFAULT);
3910 for (keymap = 0; keymap < ARRAY_SIZE(keymap_table); keymap++)
3911 help_open_keymap(view, keymap);
3913 return TRUE;
3914 }
3916 static enum request
3917 help_request(struct view *view, enum request request, struct line *line)
3918 {
3919 switch (request) {
3920 case REQ_ENTER:
3921 if (line->type == LINE_HELP_KEYMAP) {
3922 help_keymap_hidden[line->other] =
3923 !help_keymap_hidden[line->other];
3924 view->p_restore = TRUE;
3925 open_view(view, REQ_VIEW_HELP, OPEN_REFRESH);
3926 }
3928 return REQ_NONE;
3929 default:
3930 return pager_request(view, request, line);
3931 }
3932 }
3934 static struct view_ops help_ops = {
3935 "line",
3936 NULL,
3937 help_open,
3938 NULL,
3939 pager_draw,
3940 help_request,
3941 pager_grep,
3942 pager_select,
3943 };
3946 /*
3947 * Tree backend
3948 */
3950 struct tree_stack_entry {
3951 struct tree_stack_entry *prev; /* Entry below this in the stack */
3952 unsigned long lineno; /* Line number to restore */
3953 char *name; /* Position of name in opt_path */
3954 };
3956 /* The top of the path stack. */
3957 static struct tree_stack_entry *tree_stack = NULL;
3958 unsigned long tree_lineno = 0;
3960 static void
3961 pop_tree_stack_entry(void)
3962 {
3963 struct tree_stack_entry *entry = tree_stack;
3965 tree_lineno = entry->lineno;
3966 entry->name[0] = 0;
3967 tree_stack = entry->prev;
3968 free(entry);
3969 }
3971 static void
3972 push_tree_stack_entry(const char *name, unsigned long lineno)
3973 {
3974 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3975 size_t pathlen = strlen(opt_path);
3977 if (!entry)
3978 return;
3980 entry->prev = tree_stack;
3981 entry->name = opt_path + pathlen;
3982 tree_stack = entry;
3984 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3985 pop_tree_stack_entry();
3986 return;
3987 }
3989 /* Move the current line to the first tree entry. */
3990 tree_lineno = 1;
3991 entry->lineno = lineno;
3992 }
3994 /* Parse output from git-ls-tree(1):
3995 *
3996 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3997 */
3999 #define SIZEOF_TREE_ATTR \
4000 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
4002 #define SIZEOF_TREE_MODE \
4003 STRING_SIZE("100644 ")
4005 #define TREE_ID_OFFSET \
4006 STRING_SIZE("100644 blob ")
4008 struct tree_entry {
4009 char id[SIZEOF_REV];
4010 mode_t mode;
4011 struct time time; /* Date from the author ident. */
4012 const char *author; /* Author of the commit. */
4013 char name[1];
4014 };
4016 static const char *
4017 tree_path(const struct line *line)
4018 {
4019 return ((struct tree_entry *) line->data)->name;
4020 }
4022 static int
4023 tree_compare_entry(const struct line *line1, const struct line *line2)
4024 {
4025 if (line1->type != line2->type)
4026 return line1->type == LINE_TREE_DIR ? -1 : 1;
4027 return strcmp(tree_path(line1), tree_path(line2));
4028 }
4030 static const enum sort_field tree_sort_fields[] = {
4031 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4032 };
4033 static struct sort_state tree_sort_state = SORT_STATE(tree_sort_fields);
4035 static int
4036 tree_compare(const void *l1, const void *l2)
4037 {
4038 const struct line *line1 = (const struct line *) l1;
4039 const struct line *line2 = (const struct line *) l2;
4040 const struct tree_entry *entry1 = ((const struct line *) l1)->data;
4041 const struct tree_entry *entry2 = ((const struct line *) l2)->data;
4043 if (line1->type == LINE_TREE_HEAD)
4044 return -1;
4045 if (line2->type == LINE_TREE_HEAD)
4046 return 1;
4048 switch (get_sort_field(tree_sort_state)) {
4049 case ORDERBY_DATE:
4050 return sort_order(tree_sort_state, timecmp(&entry1->time, &entry2->time));
4052 case ORDERBY_AUTHOR:
4053 return sort_order(tree_sort_state, strcmp(entry1->author, entry2->author));
4055 case ORDERBY_NAME:
4056 default:
4057 return sort_order(tree_sort_state, tree_compare_entry(line1, line2));
4058 }
4059 }
4062 static struct line *
4063 tree_entry(struct view *view, enum line_type type, const char *path,
4064 const char *mode, const char *id)
4065 {
4066 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
4067 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
4069 if (!entry || !line) {
4070 free(entry);
4071 return NULL;
4072 }
4074 strncpy(entry->name, path, strlen(path));
4075 if (mode)
4076 entry->mode = strtoul(mode, NULL, 8);
4077 if (id)
4078 string_copy_rev(entry->id, id);
4080 return line;
4081 }
4083 static bool
4084 tree_read_date(struct view *view, char *text, bool *read_date)
4085 {
4086 static const char *author_name;
4087 static struct time author_time;
4089 if (!text && *read_date) {
4090 *read_date = FALSE;
4091 return TRUE;
4093 } else if (!text) {
4094 char *path = *opt_path ? opt_path : ".";
4095 /* Find next entry to process */
4096 const char *log_file[] = {
4097 "git", "log", "--no-color", "--pretty=raw",
4098 "--cc", "--raw", view->id, "--", path, NULL
4099 };
4101 if (!view->lines) {
4102 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
4103 report("Tree is empty");
4104 return TRUE;
4105 }
4107 if (!start_update(view, log_file, opt_cdup)) {
4108 report("Failed to load tree data");
4109 return TRUE;
4110 }
4112 *read_date = TRUE;
4113 return FALSE;
4115 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
4116 parse_author_line(text + STRING_SIZE("author "),
4117 &author_name, &author_time);
4119 } else if (*text == ':') {
4120 char *pos;
4121 size_t annotated = 1;
4122 size_t i;
4124 pos = strchr(text, '\t');
4125 if (!pos)
4126 return TRUE;
4127 text = pos + 1;
4128 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
4129 text += strlen(opt_path);
4130 pos = strchr(text, '/');
4131 if (pos)
4132 *pos = 0;
4134 for (i = 1; i < view->lines; i++) {
4135 struct line *line = &view->line[i];
4136 struct tree_entry *entry = line->data;
4138 annotated += !!entry->author;
4139 if (entry->author || strcmp(entry->name, text))
4140 continue;
4142 entry->author = author_name;
4143 entry->time = author_time;
4144 line->dirty = 1;
4145 break;
4146 }
4148 if (annotated == view->lines)
4149 io_kill(view->pipe);
4150 }
4151 return TRUE;
4152 }
4154 static bool
4155 tree_read(struct view *view, char *text)
4156 {
4157 static bool read_date = FALSE;
4158 struct tree_entry *data;
4159 struct line *entry, *line;
4160 enum line_type type;
4161 size_t textlen = text ? strlen(text) : 0;
4162 char *path = text + SIZEOF_TREE_ATTR;
4164 if (read_date || !text)
4165 return tree_read_date(view, text, &read_date);
4167 if (textlen <= SIZEOF_TREE_ATTR)
4168 return FALSE;
4169 if (view->lines == 0 &&
4170 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
4171 return FALSE;
4173 /* Strip the path part ... */
4174 if (*opt_path) {
4175 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
4176 size_t striplen = strlen(opt_path);
4178 if (pathlen > striplen)
4179 memmove(path, path + striplen,
4180 pathlen - striplen + 1);
4182 /* Insert "link" to parent directory. */
4183 if (view->lines == 1 &&
4184 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
4185 return FALSE;
4186 }
4188 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
4189 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
4190 if (!entry)
4191 return FALSE;
4192 data = entry->data;
4194 /* Skip "Directory ..." and ".." line. */
4195 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4196 if (tree_compare_entry(line, entry) <= 0)
4197 continue;
4199 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4201 line->data = data;
4202 line->type = type;
4203 for (; line <= entry; line++)
4204 line->dirty = line->cleareol = 1;
4205 return TRUE;
4206 }
4208 if (tree_lineno > view->lineno) {
4209 view->lineno = tree_lineno;
4210 tree_lineno = 0;
4211 }
4213 return TRUE;
4214 }
4216 static bool
4217 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4218 {
4219 struct tree_entry *entry = line->data;
4221 if (line->type == LINE_TREE_HEAD) {
4222 if (draw_text(view, line->type, "Directory path /"))
4223 return TRUE;
4224 } else {
4225 if (draw_mode(view, entry->mode))
4226 return TRUE;
4228 if (opt_author && draw_author(view, entry->author))
4229 return TRUE;
4231 if (opt_date && draw_date(view, &entry->time))
4232 return TRUE;
4233 }
4235 draw_text(view, line->type, entry->name);
4236 return TRUE;
4237 }
4239 static void
4240 open_blob_editor(const char *id)
4241 {
4242 const char *blob_argv[] = { "git", "cat-file", "blob", id, NULL };
4243 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4244 int fd = mkstemp(file);
4246 if (fd == -1)
4247 report("Failed to create temporary file");
4248 else if (!io_run_append(blob_argv, fd))
4249 report("Failed to save blob data to file");
4250 else
4251 open_editor(file);
4252 if (fd != -1)
4253 unlink(file);
4254 }
4256 static enum request
4257 tree_request(struct view *view, enum request request, struct line *line)
4258 {
4259 enum open_flags flags;
4260 struct tree_entry *entry = line->data;
4262 switch (request) {
4263 case REQ_VIEW_BLAME:
4264 if (line->type != LINE_TREE_FILE) {
4265 report("Blame only supported for files");
4266 return REQ_NONE;
4267 }
4269 string_copy(opt_ref, view->vid);
4270 return request;
4272 case REQ_EDIT:
4273 if (line->type != LINE_TREE_FILE) {
4274 report("Edit only supported for files");
4275 } else if (!is_head_commit(view->vid)) {
4276 open_blob_editor(entry->id);
4277 } else {
4278 open_editor(opt_file);
4279 }
4280 return REQ_NONE;
4282 case REQ_TOGGLE_SORT_FIELD:
4283 case REQ_TOGGLE_SORT_ORDER:
4284 sort_view(view, request, &tree_sort_state, tree_compare);
4285 return REQ_NONE;
4287 case REQ_PARENT:
4288 if (!*opt_path) {
4289 /* quit view if at top of tree */
4290 return REQ_VIEW_CLOSE;
4291 }
4292 /* fake 'cd ..' */
4293 line = &view->line[1];
4294 break;
4296 case REQ_ENTER:
4297 break;
4299 default:
4300 return request;
4301 }
4303 /* Cleanup the stack if the tree view is at a different tree. */
4304 while (!*opt_path && tree_stack)
4305 pop_tree_stack_entry();
4307 switch (line->type) {
4308 case LINE_TREE_DIR:
4309 /* Depending on whether it is a subdirectory or parent link
4310 * mangle the path buffer. */
4311 if (line == &view->line[1] && *opt_path) {
4312 pop_tree_stack_entry();
4314 } else {
4315 const char *basename = tree_path(line);
4317 push_tree_stack_entry(basename, view->lineno);
4318 }
4320 /* Trees and subtrees share the same ID, so they are not not
4321 * unique like blobs. */
4322 flags = OPEN_RELOAD;
4323 request = REQ_VIEW_TREE;
4324 break;
4326 case LINE_TREE_FILE:
4327 flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4328 request = REQ_VIEW_BLOB;
4329 break;
4331 default:
4332 return REQ_NONE;
4333 }
4335 open_view(view, request, flags);
4336 if (request == REQ_VIEW_TREE)
4337 view->lineno = tree_lineno;
4339 return REQ_NONE;
4340 }
4342 static bool
4343 tree_grep(struct view *view, struct line *line)
4344 {
4345 struct tree_entry *entry = line->data;
4346 const char *text[] = {
4347 entry->name,
4348 opt_author ? entry->author : "",
4349 mkdate(&entry->time, opt_date),
4350 NULL
4351 };
4353 return grep_text(view, text);
4354 }
4356 static void
4357 tree_select(struct view *view, struct line *line)
4358 {
4359 struct tree_entry *entry = line->data;
4361 if (line->type == LINE_TREE_FILE) {
4362 string_copy_rev(ref_blob, entry->id);
4363 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4365 } else if (line->type != LINE_TREE_DIR) {
4366 return;
4367 }
4369 string_copy_rev(view->ref, entry->id);
4370 }
4372 static bool
4373 tree_prepare(struct view *view)
4374 {
4375 if (view->lines == 0 && opt_prefix[0]) {
4376 char *pos = opt_prefix;
4378 while (pos && *pos) {
4379 char *end = strchr(pos, '/');
4381 if (end)
4382 *end = 0;
4383 push_tree_stack_entry(pos, 0);
4384 pos = end;
4385 if (end) {
4386 *end = '/';
4387 pos++;
4388 }
4389 }
4391 } else if (strcmp(view->vid, view->id)) {
4392 opt_path[0] = 0;
4393 }
4395 return prepare_io(view, opt_cdup, view->ops->argv, TRUE);
4396 }
4398 static const char *tree_argv[SIZEOF_ARG] = {
4399 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4400 };
4402 static struct view_ops tree_ops = {
4403 "file",
4404 tree_argv,
4405 NULL,
4406 tree_read,
4407 tree_draw,
4408 tree_request,
4409 tree_grep,
4410 tree_select,
4411 tree_prepare,
4412 };
4414 static bool
4415 blob_read(struct view *view, char *line)
4416 {
4417 if (!line)
4418 return TRUE;
4419 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4420 }
4422 static enum request
4423 blob_request(struct view *view, enum request request, struct line *line)
4424 {
4425 switch (request) {
4426 case REQ_EDIT:
4427 open_blob_editor(view->vid);
4428 return REQ_NONE;
4429 default:
4430 return pager_request(view, request, line);
4431 }
4432 }
4434 static const char *blob_argv[SIZEOF_ARG] = {
4435 "git", "cat-file", "blob", "%(blob)", NULL
4436 };
4438 static struct view_ops blob_ops = {
4439 "line",
4440 blob_argv,
4441 NULL,
4442 blob_read,
4443 pager_draw,
4444 blob_request,
4445 pager_grep,
4446 pager_select,
4447 };
4449 /*
4450 * Blame backend
4451 *
4452 * Loading the blame view is a two phase job:
4453 *
4454 * 1. File content is read either using opt_file from the
4455 * filesystem or using git-cat-file.
4456 * 2. Then blame information is incrementally added by
4457 * reading output from git-blame.
4458 */
4460 struct blame_commit {
4461 char id[SIZEOF_REV]; /* SHA1 ID. */
4462 char title[128]; /* First line of the commit message. */
4463 const char *author; /* Author of the commit. */
4464 struct time time; /* Date from the author ident. */
4465 char filename[128]; /* Name of file. */
4466 char parent_id[SIZEOF_REV]; /* Parent/previous SHA1 ID. */
4467 char parent_filename[128]; /* Parent/previous name of file. */
4468 };
4470 struct blame {
4471 struct blame_commit *commit;
4472 unsigned long lineno;
4473 char text[1];
4474 };
4476 static bool
4477 blame_open(struct view *view)
4478 {
4479 char path[SIZEOF_STR];
4480 size_t i;
4482 if (!view->prev && *opt_prefix) {
4483 string_copy(path, opt_file);
4484 if (!string_format(opt_file, "%s%s", opt_prefix, path))
4485 return FALSE;
4486 }
4488 if (*opt_ref || !io_open(&view->io, "%s%s", opt_cdup, opt_file)) {
4489 const char *blame_cat_file_argv[] = {
4490 "git", "cat-file", "blob", path, NULL
4491 };
4493 if (!string_format(path, "%s:%s", opt_ref, opt_file) ||
4494 !start_update(view, blame_cat_file_argv, opt_cdup))
4495 return FALSE;
4496 }
4498 /* First pass: remove multiple references to the same commit. */
4499 for (i = 0; i < view->lines; i++) {
4500 struct blame *blame = view->line[i].data;
4502 if (blame->commit && blame->commit->id[0])
4503 blame->commit->id[0] = 0;
4504 else
4505 blame->commit = NULL;
4506 }
4508 /* Second pass: free existing references. */
4509 for (i = 0; i < view->lines; i++) {
4510 struct blame *blame = view->line[i].data;
4512 if (blame->commit)
4513 free(blame->commit);
4514 }
4516 setup_update(view, opt_file);
4517 string_format(view->ref, "%s ...", opt_file);
4519 return TRUE;
4520 }
4522 static struct blame_commit *
4523 get_blame_commit(struct view *view, const char *id)
4524 {
4525 size_t i;
4527 for (i = 0; i < view->lines; i++) {
4528 struct blame *blame = view->line[i].data;
4530 if (!blame->commit)
4531 continue;
4533 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4534 return blame->commit;
4535 }
4537 {
4538 struct blame_commit *commit = calloc(1, sizeof(*commit));
4540 if (commit)
4541 string_ncopy(commit->id, id, SIZEOF_REV);
4542 return commit;
4543 }
4544 }
4546 static bool
4547 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4548 {
4549 const char *pos = *posref;
4551 *posref = NULL;
4552 pos = strchr(pos + 1, ' ');
4553 if (!pos || !isdigit(pos[1]))
4554 return FALSE;
4555 *number = atoi(pos + 1);
4556 if (*number < min || *number > max)
4557 return FALSE;
4559 *posref = pos;
4560 return TRUE;
4561 }
4563 static struct blame_commit *
4564 parse_blame_commit(struct view *view, const char *text, int *blamed)
4565 {
4566 struct blame_commit *commit;
4567 struct blame *blame;
4568 const char *pos = text + SIZEOF_REV - 2;
4569 size_t orig_lineno = 0;
4570 size_t lineno;
4571 size_t group;
4573 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4574 return NULL;
4576 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4577 !parse_number(&pos, &lineno, 1, view->lines) ||
4578 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4579 return NULL;
4581 commit = get_blame_commit(view, text);
4582 if (!commit)
4583 return NULL;
4585 *blamed += group;
4586 while (group--) {
4587 struct line *line = &view->line[lineno + group - 1];
4589 blame = line->data;
4590 blame->commit = commit;
4591 blame->lineno = orig_lineno + group - 1;
4592 line->dirty = 1;
4593 }
4595 return commit;
4596 }
4598 static bool
4599 blame_read_file(struct view *view, const char *line, bool *read_file)
4600 {
4601 if (!line) {
4602 const char *blame_argv[] = {
4603 "git", "blame", "--incremental",
4604 *opt_ref ? opt_ref : "--incremental", "--", opt_file, NULL
4605 };
4607 if (view->lines == 0 && !view->prev)
4608 die("No blame exist for %s", view->vid);
4610 if (view->lines == 0 || !start_update(view, blame_argv, opt_cdup)) {
4611 report("Failed to load blame data");
4612 return TRUE;
4613 }
4615 *read_file = FALSE;
4616 return FALSE;
4618 } else {
4619 size_t linelen = strlen(line);
4620 struct blame *blame = malloc(sizeof(*blame) + linelen);
4622 if (!blame)
4623 return FALSE;
4625 blame->commit = NULL;
4626 strncpy(blame->text, line, linelen);
4627 blame->text[linelen] = 0;
4628 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4629 }
4630 }
4632 static bool
4633 match_blame_header(const char *name, char **line)
4634 {
4635 size_t namelen = strlen(name);
4636 bool matched = !strncmp(name, *line, namelen);
4638 if (matched)
4639 *line += namelen;
4641 return matched;
4642 }
4644 static bool
4645 blame_read(struct view *view, char *line)
4646 {
4647 static struct blame_commit *commit = NULL;
4648 static int blamed = 0;
4649 static bool read_file = TRUE;
4651 if (read_file)
4652 return blame_read_file(view, line, &read_file);
4654 if (!line) {
4655 /* Reset all! */
4656 commit = NULL;
4657 blamed = 0;
4658 read_file = TRUE;
4659 string_format(view->ref, "%s", view->vid);
4660 if (view_is_displayed(view)) {
4661 update_view_title(view);
4662 redraw_view_from(view, 0);
4663 }
4664 return TRUE;
4665 }
4667 if (!commit) {
4668 commit = parse_blame_commit(view, line, &blamed);
4669 string_format(view->ref, "%s %2d%%", view->vid,
4670 view->lines ? blamed * 100 / view->lines : 0);
4672 } else if (match_blame_header("author ", &line)) {
4673 commit->author = get_author(line);
4675 } else if (match_blame_header("author-time ", &line)) {
4676 parse_timesec(&commit->time, line);
4678 } else if (match_blame_header("author-tz ", &line)) {
4679 parse_timezone(&commit->time, line);
4681 } else if (match_blame_header("summary ", &line)) {
4682 string_ncopy(commit->title, line, strlen(line));
4684 } else if (match_blame_header("previous ", &line)) {
4685 if (strlen(line) <= SIZEOF_REV)
4686 return FALSE;
4687 string_copy_rev(commit->parent_id, line);
4688 line += SIZEOF_REV;
4689 string_ncopy(commit->parent_filename, line, strlen(line));
4691 } else if (match_blame_header("filename ", &line)) {
4692 string_ncopy(commit->filename, line, strlen(line));
4693 commit = NULL;
4694 }
4696 return TRUE;
4697 }
4699 static bool
4700 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4701 {
4702 struct blame *blame = line->data;
4703 struct time *time = NULL;
4704 const char *id = NULL, *author = NULL;
4706 if (blame->commit && *blame->commit->filename) {
4707 id = blame->commit->id;
4708 author = blame->commit->author;
4709 time = &blame->commit->time;
4710 }
4712 if (opt_date && draw_date(view, time))
4713 return TRUE;
4715 if (opt_author && draw_author(view, author))
4716 return TRUE;
4718 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4719 return TRUE;
4721 if (draw_lineno(view, lineno))
4722 return TRUE;
4724 draw_text(view, LINE_DEFAULT, blame->text);
4725 return TRUE;
4726 }
4728 static bool
4729 check_blame_commit(struct blame *blame, bool check_null_id)
4730 {
4731 if (!blame->commit)
4732 report("Commit data not loaded yet");
4733 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4734 report("No commit exist for the selected line");
4735 else
4736 return TRUE;
4737 return FALSE;
4738 }
4740 static void
4741 setup_blame_parent_line(struct view *view, struct blame *blame)
4742 {
4743 char from[SIZEOF_REF + SIZEOF_STR];
4744 char to[SIZEOF_REF + SIZEOF_STR];
4745 const char *diff_tree_argv[] = {
4746 "git", "diff", "--no-textconv", "--no-extdiff", "--no-color",
4747 "-U0", from, to, "--", NULL
4748 };
4749 struct io io;
4750 int parent_lineno = -1;
4751 int blamed_lineno = -1;
4752 char *line;
4754 if (!string_format(from, "%s:%s", opt_ref, opt_file) ||
4755 !string_format(to, "%s:%s", blame->commit->id, blame->commit->filename) ||
4756 !io_run(&io, IO_RD, NULL, diff_tree_argv))
4757 return;
4759 while ((line = io_get(&io, '\n', TRUE))) {
4760 if (*line == '@') {
4761 char *pos = strchr(line, '+');
4763 parent_lineno = atoi(line + 4);
4764 if (pos)
4765 blamed_lineno = atoi(pos + 1);
4767 } else if (*line == '+' && parent_lineno != -1) {
4768 if (blame->lineno == blamed_lineno - 1 &&
4769 !strcmp(blame->text, line + 1)) {
4770 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4771 break;
4772 }
4773 blamed_lineno++;
4774 }
4775 }
4777 io_done(&io);
4778 }
4780 static enum request
4781 blame_request(struct view *view, enum request request, struct line *line)
4782 {
4783 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
4784 struct blame *blame = line->data;
4786 switch (request) {
4787 case REQ_VIEW_BLAME:
4788 if (check_blame_commit(blame, TRUE)) {
4789 string_copy(opt_ref, blame->commit->id);
4790 string_copy(opt_file, blame->commit->filename);
4791 if (blame->lineno)
4792 view->lineno = blame->lineno;
4793 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4794 }
4795 break;
4797 case REQ_PARENT:
4798 if (!check_blame_commit(blame, TRUE))
4799 break;
4800 if (!*blame->commit->parent_id) {
4801 report("The selected commit has no parents");
4802 } else {
4803 string_copy_rev(opt_ref, blame->commit->parent_id);
4804 string_copy(opt_file, blame->commit->parent_filename);
4805 setup_blame_parent_line(view, blame);
4806 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4807 }
4808 break;
4810 case REQ_ENTER:
4811 if (!check_blame_commit(blame, FALSE))
4812 break;
4814 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4815 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4816 break;
4818 if (!strcmp(blame->commit->id, NULL_ID)) {
4819 struct view *diff = VIEW(REQ_VIEW_DIFF);
4820 const char *diff_index_argv[] = {
4821 "git", "diff-index", "--root", "--patch-with-stat",
4822 "-C", "-M", "HEAD", "--", view->vid, NULL
4823 };
4825 if (!*blame->commit->parent_id) {
4826 diff_index_argv[1] = "diff";
4827 diff_index_argv[2] = "--no-color";
4828 diff_index_argv[6] = "--";
4829 diff_index_argv[7] = "/dev/null";
4830 }
4832 if (!prepare_update(diff, diff_index_argv, NULL)) {
4833 report("Failed to allocate diff command");
4834 break;
4835 }
4836 flags |= OPEN_PREPARED;
4837 }
4839 open_view(view, REQ_VIEW_DIFF, flags);
4840 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4841 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4842 break;
4844 default:
4845 return request;
4846 }
4848 return REQ_NONE;
4849 }
4851 static bool
4852 blame_grep(struct view *view, struct line *line)
4853 {
4854 struct blame *blame = line->data;
4855 struct blame_commit *commit = blame->commit;
4856 const char *text[] = {
4857 blame->text,
4858 commit ? commit->title : "",
4859 commit ? commit->id : "",
4860 commit && opt_author ? commit->author : "",
4861 commit ? mkdate(&commit->time, opt_date) : "",
4862 NULL
4863 };
4865 return grep_text(view, text);
4866 }
4868 static void
4869 blame_select(struct view *view, struct line *line)
4870 {
4871 struct blame *blame = line->data;
4872 struct blame_commit *commit = blame->commit;
4874 if (!commit)
4875 return;
4877 if (!strcmp(commit->id, NULL_ID))
4878 string_ncopy(ref_commit, "HEAD", 4);
4879 else
4880 string_copy_rev(ref_commit, commit->id);
4881 }
4883 static struct view_ops blame_ops = {
4884 "line",
4885 NULL,
4886 blame_open,
4887 blame_read,
4888 blame_draw,
4889 blame_request,
4890 blame_grep,
4891 blame_select,
4892 };
4894 /*
4895 * Branch backend
4896 */
4898 struct branch {
4899 const char *author; /* Author of the last commit. */
4900 struct time time; /* Date of the last activity. */
4901 const struct ref *ref; /* Name and commit ID information. */
4902 };
4904 static const struct ref branch_all;
4906 static const enum sort_field branch_sort_fields[] = {
4907 ORDERBY_NAME, ORDERBY_DATE, ORDERBY_AUTHOR
4908 };
4909 static struct sort_state branch_sort_state = SORT_STATE(branch_sort_fields);
4911 static int
4912 branch_compare(const void *l1, const void *l2)
4913 {
4914 const struct branch *branch1 = ((const struct line *) l1)->data;
4915 const struct branch *branch2 = ((const struct line *) l2)->data;
4917 switch (get_sort_field(branch_sort_state)) {
4918 case ORDERBY_DATE:
4919 return sort_order(branch_sort_state, timecmp(&branch1->time, &branch2->time));
4921 case ORDERBY_AUTHOR:
4922 return sort_order(branch_sort_state, strcmp(branch1->author, branch2->author));
4924 case ORDERBY_NAME:
4925 default:
4926 return sort_order(branch_sort_state, strcmp(branch1->ref->name, branch2->ref->name));
4927 }
4928 }
4930 static bool
4931 branch_draw(struct view *view, struct line *line, unsigned int lineno)
4932 {
4933 struct branch *branch = line->data;
4934 enum line_type type = branch->ref->head ? LINE_MAIN_HEAD : LINE_DEFAULT;
4936 if (opt_date && draw_date(view, &branch->time))
4937 return TRUE;
4939 if (opt_author && draw_author(view, branch->author))
4940 return TRUE;
4942 draw_text(view, type, branch->ref == &branch_all ? "All branches" : branch->ref->name);
4943 return TRUE;
4944 }
4946 static enum request
4947 branch_request(struct view *view, enum request request, struct line *line)
4948 {
4949 struct branch *branch = line->data;
4951 switch (request) {
4952 case REQ_REFRESH:
4953 load_refs();
4954 open_view(view, REQ_VIEW_BRANCH, OPEN_REFRESH);
4955 return REQ_NONE;
4957 case REQ_TOGGLE_SORT_FIELD:
4958 case REQ_TOGGLE_SORT_ORDER:
4959 sort_view(view, request, &branch_sort_state, branch_compare);
4960 return REQ_NONE;
4962 case REQ_ENTER:
4963 {
4964 const struct ref *ref = branch->ref;
4965 const char *all_branches_argv[] = {
4966 "git", "log", "--no-color", "--pretty=raw", "--parents",
4967 "--topo-order",
4968 ref == &branch_all ? "--all" : ref->name, NULL
4969 };
4970 struct view *main_view = VIEW(REQ_VIEW_MAIN);
4972 if (!prepare_update(main_view, all_branches_argv, NULL))
4973 report("Failed to load view of all branches");
4974 else
4975 open_view(view, REQ_VIEW_MAIN, OPEN_PREPARED | OPEN_SPLIT);
4976 return REQ_NONE;
4977 }
4978 default:
4979 return request;
4980 }
4981 }
4983 static bool
4984 branch_read(struct view *view, char *line)
4985 {
4986 static char id[SIZEOF_REV];
4987 struct branch *reference;
4988 size_t i;
4990 if (!line)
4991 return TRUE;
4993 switch (get_line_type(line)) {
4994 case LINE_COMMIT:
4995 string_copy_rev(id, line + STRING_SIZE("commit "));
4996 return TRUE;
4998 case LINE_AUTHOR:
4999 for (i = 0, reference = NULL; i < view->lines; i++) {
5000 struct branch *branch = view->line[i].data;
5002 if (strcmp(branch->ref->id, id))
5003 continue;
5005 view->line[i].dirty = TRUE;
5006 if (reference) {
5007 branch->author = reference->author;
5008 branch->time = reference->time;
5009 continue;
5010 }
5012 parse_author_line(line + STRING_SIZE("author "),
5013 &branch->author, &branch->time);
5014 reference = branch;
5015 }
5016 return TRUE;
5018 default:
5019 return TRUE;
5020 }
5022 }
5024 static bool
5025 branch_open_visitor(void *data, const struct ref *ref)
5026 {
5027 struct view *view = data;
5028 struct branch *branch;
5030 if (ref->tag || ref->ltag || ref->remote)
5031 return TRUE;
5033 branch = calloc(1, sizeof(*branch));
5034 if (!branch)
5035 return FALSE;
5037 branch->ref = ref;
5038 return !!add_line_data(view, branch, LINE_DEFAULT);
5039 }
5041 static bool
5042 branch_open(struct view *view)
5043 {
5044 const char *branch_log[] = {
5045 "git", "log", "--no-color", "--pretty=raw",
5046 "--simplify-by-decoration", "--all", NULL
5047 };
5049 if (!start_update(view, branch_log, NULL)) {
5050 report("Failed to load branch data");
5051 return TRUE;
5052 }
5054 setup_update(view, view->id);
5055 branch_open_visitor(view, &branch_all);
5056 foreach_ref(branch_open_visitor, view);
5057 view->p_restore = TRUE;
5059 return TRUE;
5060 }
5062 static bool
5063 branch_grep(struct view *view, struct line *line)
5064 {
5065 struct branch *branch = line->data;
5066 const char *text[] = {
5067 branch->ref->name,
5068 branch->author,
5069 NULL
5070 };
5072 return grep_text(view, text);
5073 }
5075 static void
5076 branch_select(struct view *view, struct line *line)
5077 {
5078 struct branch *branch = line->data;
5080 string_copy_rev(view->ref, branch->ref->id);
5081 string_copy_rev(ref_commit, branch->ref->id);
5082 string_copy_rev(ref_head, branch->ref->id);
5083 string_copy_rev(ref_branch, branch->ref->name);
5084 }
5086 static struct view_ops branch_ops = {
5087 "branch",
5088 NULL,
5089 branch_open,
5090 branch_read,
5091 branch_draw,
5092 branch_request,
5093 branch_grep,
5094 branch_select,
5095 };
5097 /*
5098 * Status backend
5099 */
5101 struct status {
5102 char status;
5103 struct {
5104 mode_t mode;
5105 char rev[SIZEOF_REV];
5106 char name[SIZEOF_STR];
5107 } old;
5108 struct {
5109 mode_t mode;
5110 char rev[SIZEOF_REV];
5111 char name[SIZEOF_STR];
5112 } new;
5113 };
5115 static char status_onbranch[SIZEOF_STR];
5116 static struct status stage_status;
5117 static enum line_type stage_line_type;
5118 static size_t stage_chunks;
5119 static int *stage_chunk;
5121 DEFINE_ALLOCATOR(realloc_ints, int, 32)
5123 /* This should work even for the "On branch" line. */
5124 static inline bool
5125 status_has_none(struct view *view, struct line *line)
5126 {
5127 return line < view->line + view->lines && !line[1].data;
5128 }
5130 /* Get fields from the diff line:
5131 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
5132 */
5133 static inline bool
5134 status_get_diff(struct status *file, const char *buf, size_t bufsize)
5135 {
5136 const char *old_mode = buf + 1;
5137 const char *new_mode = buf + 8;
5138 const char *old_rev = buf + 15;
5139 const char *new_rev = buf + 56;
5140 const char *status = buf + 97;
5142 if (bufsize < 98 ||
5143 old_mode[-1] != ':' ||
5144 new_mode[-1] != ' ' ||
5145 old_rev[-1] != ' ' ||
5146 new_rev[-1] != ' ' ||
5147 status[-1] != ' ')
5148 return FALSE;
5150 file->status = *status;
5152 string_copy_rev(file->old.rev, old_rev);
5153 string_copy_rev(file->new.rev, new_rev);
5155 file->old.mode = strtoul(old_mode, NULL, 8);
5156 file->new.mode = strtoul(new_mode, NULL, 8);
5158 file->old.name[0] = file->new.name[0] = 0;
5160 return TRUE;
5161 }
5163 static bool
5164 status_run(struct view *view, const char *argv[], char status, enum line_type type)
5165 {
5166 struct status *unmerged = NULL;
5167 char *buf;
5168 struct io io;
5170 if (!io_run(&io, IO_RD, opt_cdup, argv))
5171 return FALSE;
5173 add_line_data(view, NULL, type);
5175 while ((buf = io_get(&io, 0, TRUE))) {
5176 struct status *file = unmerged;
5178 if (!file) {
5179 file = calloc(1, sizeof(*file));
5180 if (!file || !add_line_data(view, file, type))
5181 goto error_out;
5182 }
5184 /* Parse diff info part. */
5185 if (status) {
5186 file->status = status;
5187 if (status == 'A')
5188 string_copy(file->old.rev, NULL_ID);
5190 } else if (!file->status || file == unmerged) {
5191 if (!status_get_diff(file, buf, strlen(buf)))
5192 goto error_out;
5194 buf = io_get(&io, 0, TRUE);
5195 if (!buf)
5196 break;
5198 /* Collapse all modified entries that follow an
5199 * associated unmerged entry. */
5200 if (unmerged == file) {
5201 unmerged->status = 'U';
5202 unmerged = NULL;
5203 } else if (file->status == 'U') {
5204 unmerged = file;
5205 }
5206 }
5208 /* Grab the old name for rename/copy. */
5209 if (!*file->old.name &&
5210 (file->status == 'R' || file->status == 'C')) {
5211 string_ncopy(file->old.name, buf, strlen(buf));
5213 buf = io_get(&io, 0, TRUE);
5214 if (!buf)
5215 break;
5216 }
5218 /* git-ls-files just delivers a NUL separated list of
5219 * file names similar to the second half of the
5220 * git-diff-* output. */
5221 string_ncopy(file->new.name, buf, strlen(buf));
5222 if (!*file->old.name)
5223 string_copy(file->old.name, file->new.name);
5224 file = NULL;
5225 }
5227 if (io_error(&io)) {
5228 error_out:
5229 io_done(&io);
5230 return FALSE;
5231 }
5233 if (!view->line[view->lines - 1].data)
5234 add_line_data(view, NULL, LINE_STAT_NONE);
5236 io_done(&io);
5237 return TRUE;
5238 }
5240 /* Don't show unmerged entries in the staged section. */
5241 static const char *status_diff_index_argv[] = {
5242 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
5243 "--cached", "-M", "HEAD", NULL
5244 };
5246 static const char *status_diff_files_argv[] = {
5247 "git", "diff-files", "-z", NULL
5248 };
5250 static const char *status_list_other_argv[] = {
5251 "git", "ls-files", "-z", "--others", "--exclude-standard", opt_prefix, NULL, NULL,
5252 };
5254 static const char *status_list_no_head_argv[] = {
5255 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
5256 };
5258 static const char *update_index_argv[] = {
5259 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
5260 };
5262 /* Restore the previous line number to stay in the context or select a
5263 * line with something that can be updated. */
5264 static void
5265 status_restore(struct view *view)
5266 {
5267 if (view->p_lineno >= view->lines)
5268 view->p_lineno = view->lines - 1;
5269 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
5270 view->p_lineno++;
5271 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
5272 view->p_lineno--;
5274 /* If the above fails, always skip the "On branch" line. */
5275 if (view->p_lineno < view->lines)
5276 view->lineno = view->p_lineno;
5277 else
5278 view->lineno = 1;
5280 if (view->lineno < view->offset)
5281 view->offset = view->lineno;
5282 else if (view->offset + view->height <= view->lineno)
5283 view->offset = view->lineno - view->height + 1;
5285 view->p_restore = FALSE;
5286 }
5288 static void
5289 status_update_onbranch(void)
5290 {
5291 static const char *paths[][2] = {
5292 { "rebase-apply/rebasing", "Rebasing" },
5293 { "rebase-apply/applying", "Applying mailbox" },
5294 { "rebase-apply/", "Rebasing mailbox" },
5295 { "rebase-merge/interactive", "Interactive rebase" },
5296 { "rebase-merge/", "Rebase merge" },
5297 { "MERGE_HEAD", "Merging" },
5298 { "BISECT_LOG", "Bisecting" },
5299 { "HEAD", "On branch" },
5300 };
5301 char buf[SIZEOF_STR];
5302 struct stat stat;
5303 int i;
5305 if (is_initial_commit()) {
5306 string_copy(status_onbranch, "Initial commit");
5307 return;
5308 }
5310 for (i = 0; i < ARRAY_SIZE(paths); i++) {
5311 char *head = opt_head;
5313 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
5314 lstat(buf, &stat) < 0)
5315 continue;
5317 if (!*opt_head) {
5318 struct io io;
5320 if (io_open(&io, "%s/rebase-merge/head-name", opt_git_dir) &&
5321 io_read_buf(&io, buf, sizeof(buf))) {
5322 head = buf;
5323 if (!prefixcmp(head, "refs/heads/"))
5324 head += STRING_SIZE("refs/heads/");
5325 }
5326 }
5328 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
5329 string_copy(status_onbranch, opt_head);
5330 return;
5331 }
5333 string_copy(status_onbranch, "Not currently on any branch");
5334 }
5336 /* First parse staged info using git-diff-index(1), then parse unstaged
5337 * info using git-diff-files(1), and finally untracked files using
5338 * git-ls-files(1). */
5339 static bool
5340 status_open(struct view *view)
5341 {
5342 reset_view(view);
5344 add_line_data(view, NULL, LINE_STAT_HEAD);
5345 status_update_onbranch();
5347 io_run_bg(update_index_argv);
5349 if (is_initial_commit()) {
5350 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
5351 return FALSE;
5352 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
5353 return FALSE;
5354 }
5356 if (!opt_untracked_dirs_content)
5357 status_list_other_argv[ARRAY_SIZE(status_list_other_argv) - 2] = "--directory";
5359 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
5360 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
5361 return FALSE;
5363 /* Restore the exact position or use the specialized restore
5364 * mode? */
5365 if (!view->p_restore)
5366 status_restore(view);
5367 return TRUE;
5368 }
5370 static bool
5371 status_draw(struct view *view, struct line *line, unsigned int lineno)
5372 {
5373 struct status *status = line->data;
5374 enum line_type type;
5375 const char *text;
5377 if (!status) {
5378 switch (line->type) {
5379 case LINE_STAT_STAGED:
5380 type = LINE_STAT_SECTION;
5381 text = "Changes to be committed:";
5382 break;
5384 case LINE_STAT_UNSTAGED:
5385 type = LINE_STAT_SECTION;
5386 text = "Changed but not updated:";
5387 break;
5389 case LINE_STAT_UNTRACKED:
5390 type = LINE_STAT_SECTION;
5391 text = "Untracked files:";
5392 break;
5394 case LINE_STAT_NONE:
5395 type = LINE_DEFAULT;
5396 text = " (no files)";
5397 break;
5399 case LINE_STAT_HEAD:
5400 type = LINE_STAT_HEAD;
5401 text = status_onbranch;
5402 break;
5404 default:
5405 return FALSE;
5406 }
5407 } else {
5408 static char buf[] = { '?', ' ', ' ', ' ', 0 };
5410 buf[0] = status->status;
5411 if (draw_text(view, line->type, buf))
5412 return TRUE;
5413 type = LINE_DEFAULT;
5414 text = status->new.name;
5415 }
5417 draw_text(view, type, text);
5418 return TRUE;
5419 }
5421 static enum request
5422 status_load_error(struct view *view, struct view *stage, const char *path)
5423 {
5424 if (displayed_views() == 2 || display[current_view] != view)
5425 maximize_view(view);
5426 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
5427 return REQ_NONE;
5428 }
5430 static enum request
5431 status_enter(struct view *view, struct line *line)
5432 {
5433 struct status *status = line->data;
5434 const char *oldpath = status ? status->old.name : NULL;
5435 /* Diffs for unmerged entries are empty when passing the new
5436 * path, so leave it empty. */
5437 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
5438 const char *info;
5439 enum open_flags split;
5440 struct view *stage = VIEW(REQ_VIEW_STAGE);
5442 if (line->type == LINE_STAT_NONE ||
5443 (!status && line[1].type == LINE_STAT_NONE)) {
5444 report("No file to diff");
5445 return REQ_NONE;
5446 }
5448 switch (line->type) {
5449 case LINE_STAT_STAGED:
5450 if (is_initial_commit()) {
5451 const char *no_head_diff_argv[] = {
5452 "git", "diff", "--no-color", "--patch-with-stat",
5453 "--", "/dev/null", newpath, NULL
5454 };
5456 if (!prepare_update(stage, no_head_diff_argv, opt_cdup))
5457 return status_load_error(view, stage, newpath);
5458 } else {
5459 const char *index_show_argv[] = {
5460 "git", "diff-index", "--root", "--patch-with-stat",
5461 "-C", "-M", "--cached", "HEAD", "--",
5462 oldpath, newpath, NULL
5463 };
5465 if (!prepare_update(stage, index_show_argv, opt_cdup))
5466 return status_load_error(view, stage, newpath);
5467 }
5469 if (status)
5470 info = "Staged changes to %s";
5471 else
5472 info = "Staged changes";
5473 break;
5475 case LINE_STAT_UNSTAGED:
5476 {
5477 const char *files_show_argv[] = {
5478 "git", "diff-files", "--root", "--patch-with-stat",
5479 "-C", "-M", "--", oldpath, newpath, NULL
5480 };
5482 if (!prepare_update(stage, files_show_argv, opt_cdup))
5483 return status_load_error(view, stage, newpath);
5484 if (status)
5485 info = "Unstaged changes to %s";
5486 else
5487 info = "Unstaged changes";
5488 break;
5489 }
5490 case LINE_STAT_UNTRACKED:
5491 if (!newpath) {
5492 report("No file to show");
5493 return REQ_NONE;
5494 }
5496 if (!suffixcmp(status->new.name, -1, "/")) {
5497 report("Cannot display a directory");
5498 return REQ_NONE;
5499 }
5501 if (!prepare_update_file(stage, newpath))
5502 return status_load_error(view, stage, newpath);
5503 info = "Untracked file %s";
5504 break;
5506 case LINE_STAT_HEAD:
5507 return REQ_NONE;
5509 default:
5510 die("line type %d not handled in switch", line->type);
5511 }
5513 split = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
5514 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5515 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5516 if (status) {
5517 stage_status = *status;
5518 } else {
5519 memset(&stage_status, 0, sizeof(stage_status));
5520 }
5522 stage_line_type = line->type;
5523 stage_chunks = 0;
5524 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5525 }
5527 return REQ_NONE;
5528 }
5530 static bool
5531 status_exists(struct status *status, enum line_type type)
5532 {
5533 struct view *view = VIEW(REQ_VIEW_STATUS);
5534 unsigned long lineno;
5536 for (lineno = 0; lineno < view->lines; lineno++) {
5537 struct line *line = &view->line[lineno];
5538 struct status *pos = line->data;
5540 if (line->type != type)
5541 continue;
5542 if (!pos && (!status || !status->status) && line[1].data) {
5543 select_view_line(view, lineno);
5544 return TRUE;
5545 }
5546 if (pos && !strcmp(status->new.name, pos->new.name)) {
5547 select_view_line(view, lineno);
5548 return TRUE;
5549 }
5550 }
5552 return FALSE;
5553 }
5556 static bool
5557 status_update_prepare(struct io *io, enum line_type type)
5558 {
5559 const char *staged_argv[] = {
5560 "git", "update-index", "-z", "--index-info", NULL
5561 };
5562 const char *others_argv[] = {
5563 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5564 };
5566 switch (type) {
5567 case LINE_STAT_STAGED:
5568 return io_run(io, IO_WR, opt_cdup, staged_argv);
5570 case LINE_STAT_UNSTAGED:
5571 case LINE_STAT_UNTRACKED:
5572 return io_run(io, IO_WR, opt_cdup, others_argv);
5574 default:
5575 die("line type %d not handled in switch", type);
5576 return FALSE;
5577 }
5578 }
5580 static bool
5581 status_update_write(struct io *io, struct status *status, enum line_type type)
5582 {
5583 char buf[SIZEOF_STR];
5584 size_t bufsize = 0;
5586 switch (type) {
5587 case LINE_STAT_STAGED:
5588 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5589 status->old.mode,
5590 status->old.rev,
5591 status->old.name, 0))
5592 return FALSE;
5593 break;
5595 case LINE_STAT_UNSTAGED:
5596 case LINE_STAT_UNTRACKED:
5597 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5598 return FALSE;
5599 break;
5601 default:
5602 die("line type %d not handled in switch", type);
5603 }
5605 return io_write(io, buf, bufsize);
5606 }
5608 static bool
5609 status_update_file(struct status *status, enum line_type type)
5610 {
5611 struct io io;
5612 bool result;
5614 if (!status_update_prepare(&io, type))
5615 return FALSE;
5617 result = status_update_write(&io, status, type);
5618 return io_done(&io) && result;
5619 }
5621 static bool
5622 status_update_files(struct view *view, struct line *line)
5623 {
5624 char buf[sizeof(view->ref)];
5625 struct io io;
5626 bool result = TRUE;
5627 struct line *pos = view->line + view->lines;
5628 int files = 0;
5629 int file, done;
5630 int cursor_y = -1, cursor_x = -1;
5632 if (!status_update_prepare(&io, line->type))
5633 return FALSE;
5635 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5636 files++;
5638 string_copy(buf, view->ref);
5639 getsyx(cursor_y, cursor_x);
5640 for (file = 0, done = 5; result && file < files; line++, file++) {
5641 int almost_done = file * 100 / files;
5643 if (almost_done > done) {
5644 done = almost_done;
5645 string_format(view->ref, "updating file %u of %u (%d%% done)",
5646 file, files, done);
5647 update_view_title(view);
5648 setsyx(cursor_y, cursor_x);
5649 doupdate();
5650 }
5651 result = status_update_write(&io, line->data, line->type);
5652 }
5653 string_copy(view->ref, buf);
5655 return io_done(&io) && result;
5656 }
5658 static bool
5659 status_update(struct view *view)
5660 {
5661 struct line *line = &view->line[view->lineno];
5663 assert(view->lines);
5665 if (!line->data) {
5666 /* This should work even for the "On branch" line. */
5667 if (line < view->line + view->lines && !line[1].data) {
5668 report("Nothing to update");
5669 return FALSE;
5670 }
5672 if (!status_update_files(view, line + 1)) {
5673 report("Failed to update file status");
5674 return FALSE;
5675 }
5677 } else if (!status_update_file(line->data, line->type)) {
5678 report("Failed to update file status");
5679 return FALSE;
5680 }
5682 return TRUE;
5683 }
5685 static bool
5686 status_revert(struct status *status, enum line_type type, bool has_none)
5687 {
5688 if (!status || type != LINE_STAT_UNSTAGED) {
5689 if (type == LINE_STAT_STAGED) {
5690 report("Cannot revert changes to staged files");
5691 } else if (type == LINE_STAT_UNTRACKED) {
5692 report("Cannot revert changes to untracked files");
5693 } else if (has_none) {
5694 report("Nothing to revert");
5695 } else {
5696 report("Cannot revert changes to multiple files");
5697 }
5699 } else if (prompt_yesno("Are you sure you want to revert changes?")) {
5700 char mode[10] = "100644";
5701 const char *reset_argv[] = {
5702 "git", "update-index", "--cacheinfo", mode,
5703 status->old.rev, status->old.name, NULL
5704 };
5705 const char *checkout_argv[] = {
5706 "git", "checkout", "--", status->old.name, NULL
5707 };
5709 if (status->status == 'U') {
5710 string_format(mode, "%5o", status->old.mode);
5712 if (status->old.mode == 0 && status->new.mode == 0) {
5713 reset_argv[2] = "--force-remove";
5714 reset_argv[3] = status->old.name;
5715 reset_argv[4] = NULL;
5716 }
5718 if (!io_run_fg(reset_argv, opt_cdup))
5719 return FALSE;
5720 if (status->old.mode == 0 && status->new.mode == 0)
5721 return TRUE;
5722 }
5724 return io_run_fg(checkout_argv, opt_cdup);
5725 }
5727 return FALSE;
5728 }
5730 static enum request
5731 status_request(struct view *view, enum request request, struct line *line)
5732 {
5733 struct status *status = line->data;
5735 switch (request) {
5736 case REQ_STATUS_UPDATE:
5737 if (!status_update(view))
5738 return REQ_NONE;
5739 break;
5741 case REQ_STATUS_REVERT:
5742 if (!status_revert(status, line->type, status_has_none(view, line)))
5743 return REQ_NONE;
5744 break;
5746 case REQ_STATUS_MERGE:
5747 if (!status || status->status != 'U') {
5748 report("Merging only possible for files with unmerged status ('U').");
5749 return REQ_NONE;
5750 }
5751 open_mergetool(status->new.name);
5752 break;
5754 case REQ_EDIT:
5755 if (!status)
5756 return request;
5757 if (status->status == 'D') {
5758 report("File has been deleted.");
5759 return REQ_NONE;
5760 }
5762 open_editor(status->new.name);
5763 break;
5765 case REQ_VIEW_BLAME:
5766 if (status)
5767 opt_ref[0] = 0;
5768 return request;
5770 case REQ_ENTER:
5771 /* After returning the status view has been split to
5772 * show the stage view. No further reloading is
5773 * necessary. */
5774 return status_enter(view, line);
5776 case REQ_REFRESH:
5777 /* Simply reload the view. */
5778 break;
5780 default:
5781 return request;
5782 }
5784 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5786 return REQ_NONE;
5787 }
5789 static void
5790 status_select(struct view *view, struct line *line)
5791 {
5792 struct status *status = line->data;
5793 char file[SIZEOF_STR] = "all files";
5794 const char *text;
5795 const char *key;
5797 if (status && !string_format(file, "'%s'", status->new.name))
5798 return;
5800 if (!status && line[1].type == LINE_STAT_NONE)
5801 line++;
5803 switch (line->type) {
5804 case LINE_STAT_STAGED:
5805 text = "Press %s to unstage %s for commit";
5806 break;
5808 case LINE_STAT_UNSTAGED:
5809 text = "Press %s to stage %s for commit";
5810 break;
5812 case LINE_STAT_UNTRACKED:
5813 text = "Press %s to stage %s for addition";
5814 break;
5816 case LINE_STAT_HEAD:
5817 case LINE_STAT_NONE:
5818 text = "Nothing to update";
5819 break;
5821 default:
5822 die("line type %d not handled in switch", line->type);
5823 }
5825 if (status && status->status == 'U') {
5826 text = "Press %s to resolve conflict in %s";
5827 key = get_key(KEYMAP_STATUS, REQ_STATUS_MERGE);
5829 } else {
5830 key = get_key(KEYMAP_STATUS, REQ_STATUS_UPDATE);
5831 }
5833 string_format(view->ref, text, key, file);
5834 if (status)
5835 string_copy(opt_file, status->new.name);
5836 }
5838 static bool
5839 status_grep(struct view *view, struct line *line)
5840 {
5841 struct status *status = line->data;
5843 if (status) {
5844 const char buf[2] = { status->status, 0 };
5845 const char *text[] = { status->new.name, buf, NULL };
5847 return grep_text(view, text);
5848 }
5850 return FALSE;
5851 }
5853 static struct view_ops status_ops = {
5854 "file",
5855 NULL,
5856 status_open,
5857 NULL,
5858 status_draw,
5859 status_request,
5860 status_grep,
5861 status_select,
5862 };
5865 static bool
5866 stage_diff_write(struct io *io, struct line *line, struct line *end)
5867 {
5868 while (line < end) {
5869 if (!io_write(io, line->data, strlen(line->data)) ||
5870 !io_write(io, "\n", 1))
5871 return FALSE;
5872 line++;
5873 if (line->type == LINE_DIFF_CHUNK ||
5874 line->type == LINE_DIFF_HEADER)
5875 break;
5876 }
5878 return TRUE;
5879 }
5881 static struct line *
5882 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5883 {
5884 for (; view->line < line; line--)
5885 if (line->type == type)
5886 return line;
5888 return NULL;
5889 }
5891 static bool
5892 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5893 {
5894 const char *apply_argv[SIZEOF_ARG] = {
5895 "git", "apply", "--whitespace=nowarn", NULL
5896 };
5897 struct line *diff_hdr;
5898 struct io io;
5899 int argc = 3;
5901 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5902 if (!diff_hdr)
5903 return FALSE;
5905 if (!revert)
5906 apply_argv[argc++] = "--cached";
5907 if (revert || stage_line_type == LINE_STAT_STAGED)
5908 apply_argv[argc++] = "-R";
5909 apply_argv[argc++] = "-";
5910 apply_argv[argc++] = NULL;
5911 if (!io_run(&io, IO_WR, opt_cdup, apply_argv))
5912 return FALSE;
5914 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5915 !stage_diff_write(&io, chunk, view->line + view->lines))
5916 chunk = NULL;
5918 io_done(&io);
5919 io_run_bg(update_index_argv);
5921 return chunk ? TRUE : FALSE;
5922 }
5924 static bool
5925 stage_update(struct view *view, struct line *line)
5926 {
5927 struct line *chunk = NULL;
5929 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5930 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5932 if (chunk) {
5933 if (!stage_apply_chunk(view, chunk, FALSE)) {
5934 report("Failed to apply chunk");
5935 return FALSE;
5936 }
5938 } else if (!stage_status.status) {
5939 view = VIEW(REQ_VIEW_STATUS);
5941 for (line = view->line; line < view->line + view->lines; line++)
5942 if (line->type == stage_line_type)
5943 break;
5945 if (!status_update_files(view, line + 1)) {
5946 report("Failed to update files");
5947 return FALSE;
5948 }
5950 } else if (!status_update_file(&stage_status, stage_line_type)) {
5951 report("Failed to update file");
5952 return FALSE;
5953 }
5955 return TRUE;
5956 }
5958 static bool
5959 stage_revert(struct view *view, struct line *line)
5960 {
5961 struct line *chunk = NULL;
5963 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5964 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5966 if (chunk) {
5967 if (!prompt_yesno("Are you sure you want to revert changes?"))
5968 return FALSE;
5970 if (!stage_apply_chunk(view, chunk, TRUE)) {
5971 report("Failed to revert chunk");
5972 return FALSE;
5973 }
5974 return TRUE;
5976 } else {
5977 return status_revert(stage_status.status ? &stage_status : NULL,
5978 stage_line_type, FALSE);
5979 }
5980 }
5983 static void
5984 stage_next(struct view *view, struct line *line)
5985 {
5986 int i;
5988 if (!stage_chunks) {
5989 for (line = view->line; line < view->line + view->lines; line++) {
5990 if (line->type != LINE_DIFF_CHUNK)
5991 continue;
5993 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5994 report("Allocation failure");
5995 return;
5996 }
5998 stage_chunk[stage_chunks++] = line - view->line;
5999 }
6000 }
6002 for (i = 0; i < stage_chunks; i++) {
6003 if (stage_chunk[i] > view->lineno) {
6004 do_scroll_view(view, stage_chunk[i] - view->lineno);
6005 report("Chunk %d of %d", i + 1, stage_chunks);
6006 return;
6007 }
6008 }
6010 report("No next chunk found");
6011 }
6013 static enum request
6014 stage_request(struct view *view, enum request request, struct line *line)
6015 {
6016 switch (request) {
6017 case REQ_STATUS_UPDATE:
6018 if (!stage_update(view, line))
6019 return REQ_NONE;
6020 break;
6022 case REQ_STATUS_REVERT:
6023 if (!stage_revert(view, line))
6024 return REQ_NONE;
6025 break;
6027 case REQ_STAGE_NEXT:
6028 if (stage_line_type == LINE_STAT_UNTRACKED) {
6029 report("File is untracked; press %s to add",
6030 get_key(KEYMAP_STAGE, REQ_STATUS_UPDATE));
6031 return REQ_NONE;
6032 }
6033 stage_next(view, line);
6034 return REQ_NONE;
6036 case REQ_EDIT:
6037 if (!stage_status.new.name[0])
6038 return request;
6039 if (stage_status.status == 'D') {
6040 report("File has been deleted.");
6041 return REQ_NONE;
6042 }
6044 open_editor(stage_status.new.name);
6045 break;
6047 case REQ_REFRESH:
6048 /* Reload everything ... */
6049 break;
6051 case REQ_VIEW_BLAME:
6052 if (stage_status.new.name[0]) {
6053 string_copy(opt_file, stage_status.new.name);
6054 opt_ref[0] = 0;
6055 }
6056 return request;
6058 case REQ_ENTER:
6059 return pager_request(view, request, line);
6061 default:
6062 return request;
6063 }
6065 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
6066 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
6068 /* Check whether the staged entry still exists, and close the
6069 * stage view if it doesn't. */
6070 if (!status_exists(&stage_status, stage_line_type)) {
6071 status_restore(VIEW(REQ_VIEW_STATUS));
6072 return REQ_VIEW_CLOSE;
6073 }
6075 if (stage_line_type == LINE_STAT_UNTRACKED) {
6076 if (!suffixcmp(stage_status.new.name, -1, "/")) {
6077 report("Cannot display a directory");
6078 return REQ_NONE;
6079 }
6081 if (!prepare_update_file(view, stage_status.new.name)) {
6082 report("Failed to open file: %s", strerror(errno));
6083 return REQ_NONE;
6084 }
6085 }
6086 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
6088 return REQ_NONE;
6089 }
6091 static struct view_ops stage_ops = {
6092 "line",
6093 NULL,
6094 NULL,
6095 pager_read,
6096 pager_draw,
6097 stage_request,
6098 pager_grep,
6099 pager_select,
6100 };
6103 /*
6104 * Revision graph
6105 */
6107 struct commit {
6108 char id[SIZEOF_REV]; /* SHA1 ID. */
6109 char title[128]; /* First line of the commit message. */
6110 const char *author; /* Author of the commit. */
6111 struct time time; /* Date from the author ident. */
6112 struct ref_list *refs; /* Repository references. */
6113 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
6114 size_t graph_size; /* The width of the graph array. */
6115 bool has_parents; /* Rewritten --parents seen. */
6116 };
6118 /* Size of rev graph with no "padding" columns */
6119 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
6121 struct rev_graph {
6122 struct rev_graph *prev, *next, *parents;
6123 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
6124 size_t size;
6125 struct commit *commit;
6126 size_t pos;
6127 unsigned int boundary:1;
6128 };
6130 /* Parents of the commit being visualized. */
6131 static struct rev_graph graph_parents[4];
6133 /* The current stack of revisions on the graph. */
6134 static struct rev_graph graph_stacks[4] = {
6135 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
6136 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
6137 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
6138 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
6139 };
6141 static inline bool
6142 graph_parent_is_merge(struct rev_graph *graph)
6143 {
6144 return graph->parents->size > 1;
6145 }
6147 static inline void
6148 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
6149 {
6150 struct commit *commit = graph->commit;
6152 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
6153 commit->graph[commit->graph_size++] = symbol;
6154 }
6156 static void
6157 clear_rev_graph(struct rev_graph *graph)
6158 {
6159 graph->boundary = 0;
6160 graph->size = graph->pos = 0;
6161 graph->commit = NULL;
6162 memset(graph->parents, 0, sizeof(*graph->parents));
6163 }
6165 static void
6166 done_rev_graph(struct rev_graph *graph)
6167 {
6168 if (graph_parent_is_merge(graph) &&
6169 graph->pos < graph->size - 1 &&
6170 graph->next->size == graph->size + graph->parents->size - 1) {
6171 size_t i = graph->pos + graph->parents->size - 1;
6173 graph->commit->graph_size = i * 2;
6174 while (i < graph->next->size - 1) {
6175 append_to_rev_graph(graph, ' ');
6176 append_to_rev_graph(graph, '\\');
6177 i++;
6178 }
6179 }
6181 clear_rev_graph(graph);
6182 }
6184 static void
6185 push_rev_graph(struct rev_graph *graph, const char *parent)
6186 {
6187 int i;
6189 /* "Collapse" duplicate parents lines.
6190 *
6191 * FIXME: This needs to also update update the drawn graph but
6192 * for now it just serves as a method for pruning graph lines. */
6193 for (i = 0; i < graph->size; i++)
6194 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
6195 return;
6197 if (graph->size < SIZEOF_REVITEMS) {
6198 string_copy_rev(graph->rev[graph->size++], parent);
6199 }
6200 }
6202 static chtype
6203 get_rev_graph_symbol(struct rev_graph *graph)
6204 {
6205 chtype symbol;
6207 if (graph->boundary)
6208 symbol = REVGRAPH_BOUND;
6209 else if (graph->parents->size == 0)
6210 symbol = REVGRAPH_INIT;
6211 else if (graph_parent_is_merge(graph))
6212 symbol = REVGRAPH_MERGE;
6213 else if (graph->pos >= graph->size)
6214 symbol = REVGRAPH_BRANCH;
6215 else
6216 symbol = REVGRAPH_COMMIT;
6218 return symbol;
6219 }
6221 static void
6222 draw_rev_graph(struct rev_graph *graph)
6223 {
6224 struct rev_filler {
6225 chtype separator, line;
6226 };
6227 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
6228 static struct rev_filler fillers[] = {
6229 { ' ', '|' },
6230 { '`', '.' },
6231 { '\'', ' ' },
6232 { '/', ' ' },
6233 };
6234 chtype symbol = get_rev_graph_symbol(graph);
6235 struct rev_filler *filler;
6236 size_t i;
6238 fillers[DEFAULT].line = opt_line_graphics ? ACS_VLINE : '|';
6239 filler = &fillers[DEFAULT];
6241 for (i = 0; i < graph->pos; i++) {
6242 append_to_rev_graph(graph, filler->line);
6243 if (graph_parent_is_merge(graph->prev) &&
6244 graph->prev->pos == i)
6245 filler = &fillers[RSHARP];
6247 append_to_rev_graph(graph, filler->separator);
6248 }
6250 /* Place the symbol for this revision. */
6251 append_to_rev_graph(graph, symbol);
6253 if (graph->prev->size > graph->size)
6254 filler = &fillers[RDIAG];
6255 else
6256 filler = &fillers[DEFAULT];
6258 i++;
6260 for (; i < graph->size; i++) {
6261 append_to_rev_graph(graph, filler->separator);
6262 append_to_rev_graph(graph, filler->line);
6263 if (graph_parent_is_merge(graph->prev) &&
6264 i < graph->prev->pos + graph->parents->size)
6265 filler = &fillers[RSHARP];
6266 if (graph->prev->size > graph->size)
6267 filler = &fillers[LDIAG];
6268 }
6270 if (graph->prev->size > graph->size) {
6271 append_to_rev_graph(graph, filler->separator);
6272 if (filler->line != ' ')
6273 append_to_rev_graph(graph, filler->line);
6274 }
6275 }
6277 /* Prepare the next rev graph */
6278 static void
6279 prepare_rev_graph(struct rev_graph *graph)
6280 {
6281 size_t i;
6283 /* First, traverse all lines of revisions up to the active one. */
6284 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
6285 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
6286 break;
6288 push_rev_graph(graph->next, graph->rev[graph->pos]);
6289 }
6291 /* Interleave the new revision parent(s). */
6292 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
6293 push_rev_graph(graph->next, graph->parents->rev[i]);
6295 /* Lastly, put any remaining revisions. */
6296 for (i = graph->pos + 1; i < graph->size; i++)
6297 push_rev_graph(graph->next, graph->rev[i]);
6298 }
6300 static void
6301 update_rev_graph(struct view *view, struct rev_graph *graph)
6302 {
6303 /* If this is the finalizing update ... */
6304 if (graph->commit)
6305 prepare_rev_graph(graph);
6307 /* Graph visualization needs a one rev look-ahead,
6308 * so the first update doesn't visualize anything. */
6309 if (!graph->prev->commit)
6310 return;
6312 if (view->lines > 2)
6313 view->line[view->lines - 3].dirty = 1;
6314 if (view->lines > 1)
6315 view->line[view->lines - 2].dirty = 1;
6316 draw_rev_graph(graph->prev);
6317 done_rev_graph(graph->prev->prev);
6318 }
6321 /*
6322 * Main view backend
6323 */
6325 static const char *main_argv[SIZEOF_ARG] = {
6326 "git", "log", "--no-color", "--pretty=raw", "--parents",
6327 "--topo-order", "%(diffargs)", "%(revargs)",
6328 "--", "%(fileargs)", NULL
6329 };
6331 static bool
6332 main_draw(struct view *view, struct line *line, unsigned int lineno)
6333 {
6334 struct commit *commit = line->data;
6336 if (!commit->author)
6337 return FALSE;
6339 if (opt_date && draw_date(view, &commit->time))
6340 return TRUE;
6342 if (opt_author && draw_author(view, commit->author))
6343 return TRUE;
6345 if (opt_rev_graph && commit->graph_size &&
6346 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
6347 return TRUE;
6349 if (opt_show_refs && commit->refs) {
6350 size_t i;
6352 for (i = 0; i < commit->refs->size; i++) {
6353 struct ref *ref = commit->refs->refs[i];
6354 enum line_type type;
6356 if (ref->head)
6357 type = LINE_MAIN_HEAD;
6358 else if (ref->ltag)
6359 type = LINE_MAIN_LOCAL_TAG;
6360 else if (ref->tag)
6361 type = LINE_MAIN_TAG;
6362 else if (ref->tracked)
6363 type = LINE_MAIN_TRACKED;
6364 else if (ref->remote)
6365 type = LINE_MAIN_REMOTE;
6366 else
6367 type = LINE_MAIN_REF;
6369 if (draw_text(view, type, "[") ||
6370 draw_text(view, type, ref->name) ||
6371 draw_text(view, type, "]"))
6372 return TRUE;
6374 if (draw_text(view, LINE_DEFAULT, " "))
6375 return TRUE;
6376 }
6377 }
6379 draw_text(view, LINE_DEFAULT, commit->title);
6380 return TRUE;
6381 }
6383 /* Reads git log --pretty=raw output and parses it into the commit struct. */
6384 static bool
6385 main_read(struct view *view, char *line)
6386 {
6387 static struct rev_graph *graph = graph_stacks;
6388 enum line_type type;
6389 struct commit *commit;
6391 if (!line) {
6392 int i;
6394 if (!view->lines && !view->prev)
6395 die("No revisions match the given arguments.");
6396 if (view->lines > 0) {
6397 commit = view->line[view->lines - 1].data;
6398 view->line[view->lines - 1].dirty = 1;
6399 if (!commit->author) {
6400 view->lines--;
6401 free(commit);
6402 graph->commit = NULL;
6403 }
6404 }
6405 update_rev_graph(view, graph);
6407 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
6408 clear_rev_graph(&graph_stacks[i]);
6409 return TRUE;
6410 }
6412 type = get_line_type(line);
6413 if (type == LINE_COMMIT) {
6414 commit = calloc(1, sizeof(struct commit));
6415 if (!commit)
6416 return FALSE;
6418 line += STRING_SIZE("commit ");
6419 if (*line == '-') {
6420 graph->boundary = 1;
6421 line++;
6422 }
6424 string_copy_rev(commit->id, line);
6425 commit->refs = get_ref_list(commit->id);
6426 graph->commit = commit;
6427 add_line_data(view, commit, LINE_MAIN_COMMIT);
6429 while ((line = strchr(line, ' '))) {
6430 line++;
6431 push_rev_graph(graph->parents, line);
6432 commit->has_parents = TRUE;
6433 }
6434 return TRUE;
6435 }
6437 if (!view->lines)
6438 return TRUE;
6439 commit = view->line[view->lines - 1].data;
6441 switch (type) {
6442 case LINE_PARENT:
6443 if (commit->has_parents)
6444 break;
6445 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
6446 break;
6448 case LINE_AUTHOR:
6449 parse_author_line(line + STRING_SIZE("author "),
6450 &commit->author, &commit->time);
6451 update_rev_graph(view, graph);
6452 graph = graph->next;
6453 break;
6455 default:
6456 /* Fill in the commit title if it has not already been set. */
6457 if (commit->title[0])
6458 break;
6460 /* Require titles to start with a non-space character at the
6461 * offset used by git log. */
6462 if (strncmp(line, " ", 4))
6463 break;
6464 line += 4;
6465 /* Well, if the title starts with a whitespace character,
6466 * try to be forgiving. Otherwise we end up with no title. */
6467 while (isspace(*line))
6468 line++;
6469 if (*line == '\0')
6470 break;
6471 /* FIXME: More graceful handling of titles; append "..." to
6472 * shortened titles, etc. */
6474 string_expand(commit->title, sizeof(commit->title), line, 1);
6475 view->line[view->lines - 1].dirty = 1;
6476 }
6478 return TRUE;
6479 }
6481 static enum request
6482 main_request(struct view *view, enum request request, struct line *line)
6483 {
6484 enum open_flags flags = view_is_displayed(view) ? OPEN_SPLIT : OPEN_DEFAULT;
6486 switch (request) {
6487 case REQ_ENTER:
6488 if (view_is_displayed(view) && display[0] != view)
6489 maximize_view(view);
6490 open_view(view, REQ_VIEW_DIFF, flags);
6491 break;
6492 case REQ_REFRESH:
6493 load_refs();
6494 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6495 break;
6496 default:
6497 return request;
6498 }
6500 return REQ_NONE;
6501 }
6503 static bool
6504 grep_refs(struct ref_list *list, regex_t *regex)
6505 {
6506 regmatch_t pmatch;
6507 size_t i;
6509 if (!opt_show_refs || !list)
6510 return FALSE;
6512 for (i = 0; i < list->size; i++) {
6513 if (regexec(regex, list->refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6514 return TRUE;
6515 }
6517 return FALSE;
6518 }
6520 static bool
6521 main_grep(struct view *view, struct line *line)
6522 {
6523 struct commit *commit = line->data;
6524 const char *text[] = {
6525 commit->title,
6526 opt_author ? commit->author : "",
6527 mkdate(&commit->time, opt_date),
6528 NULL
6529 };
6531 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6532 }
6534 static void
6535 main_select(struct view *view, struct line *line)
6536 {
6537 struct commit *commit = line->data;
6539 string_copy_rev(view->ref, commit->id);
6540 string_copy_rev(ref_commit, view->ref);
6541 }
6543 static struct view_ops main_ops = {
6544 "commit",
6545 main_argv,
6546 NULL,
6547 main_read,
6548 main_draw,
6549 main_request,
6550 main_grep,
6551 main_select,
6552 };
6555 /*
6556 * Status management
6557 */
6559 /* Whether or not the curses interface has been initialized. */
6560 static bool cursed = FALSE;
6562 /* Terminal hacks and workarounds. */
6563 static bool use_scroll_redrawwin;
6564 static bool use_scroll_status_wclear;
6566 /* The status window is used for polling keystrokes. */
6567 static WINDOW *status_win;
6569 /* Reading from the prompt? */
6570 static bool input_mode = FALSE;
6572 static bool status_empty = FALSE;
6574 /* Update status and title window. */
6575 static void
6576 report(const char *msg, ...)
6577 {
6578 struct view *view = display[current_view];
6580 if (input_mode)
6581 return;
6583 if (!view) {
6584 char buf[SIZEOF_STR];
6585 va_list args;
6587 va_start(args, msg);
6588 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6589 buf[sizeof(buf) - 1] = 0;
6590 buf[sizeof(buf) - 2] = '.';
6591 buf[sizeof(buf) - 3] = '.';
6592 buf[sizeof(buf) - 4] = '.';
6593 }
6594 va_end(args);
6595 die("%s", buf);
6596 }
6598 if (!status_empty || *msg) {
6599 va_list args;
6601 va_start(args, msg);
6603 wmove(status_win, 0, 0);
6604 if (view->has_scrolled && use_scroll_status_wclear)
6605 wclear(status_win);
6606 if (*msg) {
6607 vwprintw(status_win, msg, args);
6608 status_empty = FALSE;
6609 } else {
6610 status_empty = TRUE;
6611 }
6612 wclrtoeol(status_win);
6613 wnoutrefresh(status_win);
6615 va_end(args);
6616 }
6618 update_view_title(view);
6619 }
6621 static void
6622 init_display(void)
6623 {
6624 const char *term;
6625 int x, y;
6627 /* Initialize the curses library */
6628 if (isatty(STDIN_FILENO)) {
6629 cursed = !!initscr();
6630 opt_tty = stdin;
6631 } else {
6632 /* Leave stdin and stdout alone when acting as a pager. */
6633 opt_tty = fopen("/dev/tty", "r+");
6634 if (!opt_tty)
6635 die("Failed to open /dev/tty");
6636 cursed = !!newterm(NULL, opt_tty, opt_tty);
6637 }
6639 if (!cursed)
6640 die("Failed to initialize curses");
6642 nonl(); /* Disable conversion and detect newlines from input. */
6643 cbreak(); /* Take input chars one at a time, no wait for \n */
6644 noecho(); /* Don't echo input */
6645 leaveok(stdscr, FALSE);
6647 if (has_colors())
6648 init_colors();
6650 getmaxyx(stdscr, y, x);
6651 status_win = newwin(1, x, y - 1, 0);
6652 if (!status_win)
6653 die("Failed to create status window");
6655 /* Enable keyboard mapping */
6656 keypad(status_win, TRUE);
6657 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6659 #if defined(NCURSES_VERSION_PATCH) && (NCURSES_VERSION_PATCH >= 20080119)
6660 set_tabsize(opt_tab_size);
6661 #else
6662 TABSIZE = opt_tab_size;
6663 #endif
6665 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6666 if (term && !strcmp(term, "gnome-terminal")) {
6667 /* In the gnome-terminal-emulator, the message from
6668 * scrolling up one line when impossible followed by
6669 * scrolling down one line causes corruption of the
6670 * status line. This is fixed by calling wclear. */
6671 use_scroll_status_wclear = TRUE;
6672 use_scroll_redrawwin = FALSE;
6674 } else if (term && !strcmp(term, "xrvt-xpm")) {
6675 /* No problems with full optimizations in xrvt-(unicode)
6676 * and aterm. */
6677 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6679 } else {
6680 /* When scrolling in (u)xterm the last line in the
6681 * scrolling direction will update slowly. */
6682 use_scroll_redrawwin = TRUE;
6683 use_scroll_status_wclear = FALSE;
6684 }
6685 }
6687 static int
6688 get_input(int prompt_position)
6689 {
6690 struct view *view;
6691 int i, key, cursor_y, cursor_x;
6693 if (prompt_position)
6694 input_mode = TRUE;
6696 while (TRUE) {
6697 bool loading = FALSE;
6699 foreach_view (view, i) {
6700 update_view(view);
6701 if (view_is_displayed(view) && view->has_scrolled &&
6702 use_scroll_redrawwin)
6703 redrawwin(view->win);
6704 view->has_scrolled = FALSE;
6705 if (view->pipe)
6706 loading = TRUE;
6707 }
6709 /* Update the cursor position. */
6710 if (prompt_position) {
6711 getbegyx(status_win, cursor_y, cursor_x);
6712 cursor_x = prompt_position;
6713 } else {
6714 view = display[current_view];
6715 getbegyx(view->win, cursor_y, cursor_x);
6716 cursor_x = view->width - 1;
6717 cursor_y += view->lineno - view->offset;
6718 }
6719 setsyx(cursor_y, cursor_x);
6721 /* Refresh, accept single keystroke of input */
6722 doupdate();
6723 nodelay(status_win, loading);
6724 key = wgetch(status_win);
6726 /* wgetch() with nodelay() enabled returns ERR when
6727 * there's no input. */
6728 if (key == ERR) {
6730 } else if (key == KEY_RESIZE) {
6731 int height, width;
6733 getmaxyx(stdscr, height, width);
6735 wresize(status_win, 1, width);
6736 mvwin(status_win, height - 1, 0);
6737 wnoutrefresh(status_win);
6738 resize_display();
6739 redraw_display(TRUE);
6741 } else {
6742 input_mode = FALSE;
6743 return key;
6744 }
6745 }
6746 }
6748 static char *
6749 prompt_input(const char *prompt, input_handler handler, void *data)
6750 {
6751 enum input_status status = INPUT_OK;
6752 static char buf[SIZEOF_STR];
6753 size_t pos = 0;
6755 buf[pos] = 0;
6757 while (status == INPUT_OK || status == INPUT_SKIP) {
6758 int key;
6760 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6761 wclrtoeol(status_win);
6763 key = get_input(pos + 1);
6764 switch (key) {
6765 case KEY_RETURN:
6766 case KEY_ENTER:
6767 case '\n':
6768 status = pos ? INPUT_STOP : INPUT_CANCEL;
6769 break;
6771 case KEY_BACKSPACE:
6772 if (pos > 0)
6773 buf[--pos] = 0;
6774 else
6775 status = INPUT_CANCEL;
6776 break;
6778 case KEY_ESC:
6779 status = INPUT_CANCEL;
6780 break;
6782 default:
6783 if (pos >= sizeof(buf)) {
6784 report("Input string too long");
6785 return NULL;
6786 }
6788 status = handler(data, buf, key);
6789 if (status == INPUT_OK)
6790 buf[pos++] = (char) key;
6791 }
6792 }
6794 /* Clear the status window */
6795 status_empty = FALSE;
6796 report("");
6798 if (status == INPUT_CANCEL)
6799 return NULL;
6801 buf[pos++] = 0;
6803 return buf;
6804 }
6806 static enum input_status
6807 prompt_yesno_handler(void *data, char *buf, int c)
6808 {
6809 if (c == 'y' || c == 'Y')
6810 return INPUT_STOP;
6811 if (c == 'n' || c == 'N')
6812 return INPUT_CANCEL;
6813 return INPUT_SKIP;
6814 }
6816 static bool
6817 prompt_yesno(const char *prompt)
6818 {
6819 char prompt2[SIZEOF_STR];
6821 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6822 return FALSE;
6824 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6825 }
6827 static enum input_status
6828 read_prompt_handler(void *data, char *buf, int c)
6829 {
6830 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6831 }
6833 static char *
6834 read_prompt(const char *prompt)
6835 {
6836 return prompt_input(prompt, read_prompt_handler, NULL);
6837 }
6839 static bool prompt_menu(const char *prompt, const struct menu_item *items, int *selected)
6840 {
6841 enum input_status status = INPUT_OK;
6842 int size = 0;
6844 while (items[size].text)
6845 size++;
6847 while (status == INPUT_OK) {
6848 const struct menu_item *item = &items[*selected];
6849 int key;
6850 int i;
6852 mvwprintw(status_win, 0, 0, "%s (%d of %d) ",
6853 prompt, *selected + 1, size);
6854 if (item->hotkey)
6855 wprintw(status_win, "[%c] ", (char) item->hotkey);
6856 wprintw(status_win, "%s", item->text);
6857 wclrtoeol(status_win);
6859 key = get_input(COLS - 1);
6860 switch (key) {
6861 case KEY_RETURN:
6862 case KEY_ENTER:
6863 case '\n':
6864 status = INPUT_STOP;
6865 break;
6867 case KEY_LEFT:
6868 case KEY_UP:
6869 *selected = *selected - 1;
6870 if (*selected < 0)
6871 *selected = size - 1;
6872 break;
6874 case KEY_RIGHT:
6875 case KEY_DOWN:
6876 *selected = (*selected + 1) % size;
6877 break;
6879 case KEY_ESC:
6880 status = INPUT_CANCEL;
6881 break;
6883 default:
6884 for (i = 0; items[i].text; i++)
6885 if (items[i].hotkey == key) {
6886 *selected = i;
6887 status = INPUT_STOP;
6888 break;
6889 }
6890 }
6891 }
6893 /* Clear the status window */
6894 status_empty = FALSE;
6895 report("");
6897 return status != INPUT_CANCEL;
6898 }
6900 /*
6901 * Repository properties
6902 */
6904 static struct ref **refs = NULL;
6905 static size_t refs_size = 0;
6906 static struct ref *refs_head = NULL;
6908 static struct ref_list **ref_lists = NULL;
6909 static size_t ref_lists_size = 0;
6911 DEFINE_ALLOCATOR(realloc_refs, struct ref *, 256)
6912 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6913 DEFINE_ALLOCATOR(realloc_ref_lists, struct ref_list *, 8)
6915 static int
6916 compare_refs(const void *ref1_, const void *ref2_)
6917 {
6918 const struct ref *ref1 = *(const struct ref **)ref1_;
6919 const struct ref *ref2 = *(const struct ref **)ref2_;
6921 if (ref1->tag != ref2->tag)
6922 return ref2->tag - ref1->tag;
6923 if (ref1->ltag != ref2->ltag)
6924 return ref2->ltag - ref2->ltag;
6925 if (ref1->head != ref2->head)
6926 return ref2->head - ref1->head;
6927 if (ref1->tracked != ref2->tracked)
6928 return ref2->tracked - ref1->tracked;
6929 if (ref1->remote != ref2->remote)
6930 return ref2->remote - ref1->remote;
6931 return strcmp(ref1->name, ref2->name);
6932 }
6934 static void
6935 foreach_ref(bool (*visitor)(void *data, const struct ref *ref), void *data)
6936 {
6937 size_t i;
6939 for (i = 0; i < refs_size; i++)
6940 if (!visitor(data, refs[i]))
6941 break;
6942 }
6944 static struct ref *
6945 get_ref_head()
6946 {
6947 return refs_head;
6948 }
6950 static struct ref_list *
6951 get_ref_list(const char *id)
6952 {
6953 struct ref_list *list;
6954 size_t i;
6956 for (i = 0; i < ref_lists_size; i++)
6957 if (!strcmp(id, ref_lists[i]->id))
6958 return ref_lists[i];
6960 if (!realloc_ref_lists(&ref_lists, ref_lists_size, 1))
6961 return NULL;
6962 list = calloc(1, sizeof(*list));
6963 if (!list)
6964 return NULL;
6966 for (i = 0; i < refs_size; i++) {
6967 if (!strcmp(id, refs[i]->id) &&
6968 realloc_refs_list(&list->refs, list->size, 1))
6969 list->refs[list->size++] = refs[i];
6970 }
6972 if (!list->refs) {
6973 free(list);
6974 return NULL;
6975 }
6977 qsort(list->refs, list->size, sizeof(*list->refs), compare_refs);
6978 ref_lists[ref_lists_size++] = list;
6979 return list;
6980 }
6982 static int
6983 read_ref(char *id, size_t idlen, char *name, size_t namelen, void *data)
6984 {
6985 struct ref *ref = NULL;
6986 bool tag = FALSE;
6987 bool ltag = FALSE;
6988 bool remote = FALSE;
6989 bool tracked = FALSE;
6990 bool head = FALSE;
6991 int from = 0, to = refs_size - 1;
6993 if (!prefixcmp(name, "refs/tags/")) {
6994 if (!suffixcmp(name, namelen, "^{}")) {
6995 namelen -= 3;
6996 name[namelen] = 0;
6997 } else {
6998 ltag = TRUE;
6999 }
7001 tag = TRUE;
7002 namelen -= STRING_SIZE("refs/tags/");
7003 name += STRING_SIZE("refs/tags/");
7005 } else if (!prefixcmp(name, "refs/remotes/")) {
7006 remote = TRUE;
7007 namelen -= STRING_SIZE("refs/remotes/");
7008 name += STRING_SIZE("refs/remotes/");
7009 tracked = !strcmp(opt_remote, name);
7011 } else if (!prefixcmp(name, "refs/heads/")) {
7012 namelen -= STRING_SIZE("refs/heads/");
7013 name += STRING_SIZE("refs/heads/");
7014 if (!strncmp(opt_head, name, namelen))
7015 return OK;
7017 } else if (!strcmp(name, "HEAD")) {
7018 head = TRUE;
7019 if (*opt_head) {
7020 namelen = strlen(opt_head);
7021 name = opt_head;
7022 }
7023 }
7025 /* If we are reloading or it's an annotated tag, replace the
7026 * previous SHA1 with the resolved commit id; relies on the fact
7027 * git-ls-remote lists the commit id of an annotated tag right
7028 * before the commit id it points to. */
7029 while (from <= to) {
7030 size_t pos = (to + from) / 2;
7031 int cmp = strcmp(name, refs[pos]->name);
7033 if (!cmp) {
7034 ref = refs[pos];
7035 break;
7036 }
7038 if (cmp < 0)
7039 to = pos - 1;
7040 else
7041 from = pos + 1;
7042 }
7044 if (!ref) {
7045 if (!realloc_refs(&refs, refs_size, 1))
7046 return ERR;
7047 ref = calloc(1, sizeof(*ref) + namelen);
7048 if (!ref)
7049 return ERR;
7050 memmove(refs + from + 1, refs + from,
7051 (refs_size - from) * sizeof(*refs));
7052 refs[from] = ref;
7053 strncpy(ref->name, name, namelen);
7054 refs_size++;
7055 }
7057 ref->head = head;
7058 ref->tag = tag;
7059 ref->ltag = ltag;
7060 ref->remote = remote;
7061 ref->tracked = tracked;
7062 string_copy_rev(ref->id, id);
7064 if (head)
7065 refs_head = ref;
7066 return OK;
7067 }
7069 static int
7070 load_refs(void)
7071 {
7072 const char *head_argv[] = {
7073 "git", "symbolic-ref", "HEAD", NULL
7074 };
7075 static const char *ls_remote_argv[SIZEOF_ARG] = {
7076 "git", "ls-remote", opt_git_dir, NULL
7077 };
7078 static bool init = FALSE;
7079 size_t i;
7081 if (!init) {
7082 if (!argv_from_env(ls_remote_argv, "TIG_LS_REMOTE"))
7083 die("TIG_LS_REMOTE contains too many arguments");
7084 init = TRUE;
7085 }
7087 if (!*opt_git_dir)
7088 return OK;
7090 if (io_run_buf(head_argv, opt_head, sizeof(opt_head)) &&
7091 !prefixcmp(opt_head, "refs/heads/")) {
7092 char *offset = opt_head + STRING_SIZE("refs/heads/");
7094 memmove(opt_head, offset, strlen(offset) + 1);
7095 }
7097 refs_head = NULL;
7098 for (i = 0; i < refs_size; i++)
7099 refs[i]->id[0] = 0;
7101 if (io_run_load(ls_remote_argv, "\t", read_ref, NULL) == ERR)
7102 return ERR;
7104 /* Update the ref lists to reflect changes. */
7105 for (i = 0; i < ref_lists_size; i++) {
7106 struct ref_list *list = ref_lists[i];
7107 size_t old, new;
7109 for (old = new = 0; old < list->size; old++)
7110 if (!strcmp(list->id, list->refs[old]->id))
7111 list->refs[new++] = list->refs[old];
7112 list->size = new;
7113 }
7115 return OK;
7116 }
7118 static void
7119 set_remote_branch(const char *name, const char *value, size_t valuelen)
7120 {
7121 if (!strcmp(name, ".remote")) {
7122 string_ncopy(opt_remote, value, valuelen);
7124 } else if (*opt_remote && !strcmp(name, ".merge")) {
7125 size_t from = strlen(opt_remote);
7127 if (!prefixcmp(value, "refs/heads/"))
7128 value += STRING_SIZE("refs/heads/");
7130 if (!string_format_from(opt_remote, &from, "/%s", value))
7131 opt_remote[0] = 0;
7132 }
7133 }
7135 static void
7136 set_repo_config_option(char *name, char *value, enum option_code (*cmd)(int, const char **))
7137 {
7138 const char *argv[SIZEOF_ARG] = { name, "=" };
7139 int argc = 1 + (cmd == option_set_command);
7140 enum option_code error;
7142 if (!argv_from_string(argv, &argc, value))
7143 error = OPT_ERR_TOO_MANY_OPTION_ARGUMENTS;
7144 else
7145 error = cmd(argc, argv);
7147 if (error != OPT_OK)
7148 warn("Option 'tig.%s': %s", name, option_errors[error]);
7149 }
7151 static bool
7152 set_environment_variable(const char *name, const char *value)
7153 {
7154 size_t len = strlen(name) + 1 + strlen(value) + 1;
7155 char *env = malloc(len);
7157 if (env &&
7158 string_nformat(env, len, NULL, "%s=%s", name, value) &&
7159 putenv(env) == 0)
7160 return TRUE;
7161 free(env);
7162 return FALSE;
7163 }
7165 static void
7166 set_work_tree(const char *value)
7167 {
7168 char cwd[SIZEOF_STR];
7170 if (!getcwd(cwd, sizeof(cwd)))
7171 die("Failed to get cwd path: %s", strerror(errno));
7172 if (chdir(opt_git_dir) < 0)
7173 die("Failed to chdir(%s): %s", strerror(errno));
7174 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
7175 die("Failed to get git path: %s", strerror(errno));
7176 if (chdir(cwd) < 0)
7177 die("Failed to chdir(%s): %s", cwd, strerror(errno));
7178 if (chdir(value) < 0)
7179 die("Failed to chdir(%s): %s", value, strerror(errno));
7180 if (!getcwd(cwd, sizeof(cwd)))
7181 die("Failed to get cwd path: %s", strerror(errno));
7182 if (!set_environment_variable("GIT_WORK_TREE", cwd))
7183 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
7184 if (!set_environment_variable("GIT_DIR", opt_git_dir))
7185 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
7186 opt_is_inside_work_tree = TRUE;
7187 }
7189 static int
7190 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7191 {
7192 if (!strcmp(name, "i18n.commitencoding"))
7193 string_ncopy(opt_encoding, value, valuelen);
7195 else if (!strcmp(name, "core.editor"))
7196 string_ncopy(opt_editor, value, valuelen);
7198 else if (!strcmp(name, "core.worktree"))
7199 set_work_tree(value);
7201 else if (!prefixcmp(name, "tig.color."))
7202 set_repo_config_option(name + 10, value, option_color_command);
7204 else if (!prefixcmp(name, "tig.bind."))
7205 set_repo_config_option(name + 9, value, option_bind_command);
7207 else if (!prefixcmp(name, "tig."))
7208 set_repo_config_option(name + 4, value, option_set_command);
7210 else if (*opt_head && !prefixcmp(name, "branch.") &&
7211 !strncmp(name + 7, opt_head, strlen(opt_head)))
7212 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
7214 return OK;
7215 }
7217 static int
7218 load_git_config(void)
7219 {
7220 const char *config_list_argv[] = { "git", "config", "--list", NULL };
7222 return io_run_load(config_list_argv, "=", read_repo_config_option, NULL);
7223 }
7225 static int
7226 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7227 {
7228 if (!opt_git_dir[0]) {
7229 string_ncopy(opt_git_dir, name, namelen);
7231 } else if (opt_is_inside_work_tree == -1) {
7232 /* This can be 3 different values depending on the
7233 * version of git being used. If git-rev-parse does not
7234 * understand --is-inside-work-tree it will simply echo
7235 * the option else either "true" or "false" is printed.
7236 * Default to true for the unknown case. */
7237 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
7239 } else if (*name == '.') {
7240 string_ncopy(opt_cdup, name, namelen);
7242 } else {
7243 string_ncopy(opt_prefix, name, namelen);
7244 }
7246 return OK;
7247 }
7249 static int
7250 load_repo_info(void)
7251 {
7252 const char *rev_parse_argv[] = {
7253 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
7254 "--show-cdup", "--show-prefix", NULL
7255 };
7257 return io_run_load(rev_parse_argv, "=", read_repo_info, NULL);
7258 }
7261 /*
7262 * Main
7263 */
7265 static const char usage[] =
7266 "tig " TIG_VERSION " (" __DATE__ ")\n"
7267 "\n"
7268 "Usage: tig [options] [revs] [--] [paths]\n"
7269 " or: tig show [options] [revs] [--] [paths]\n"
7270 " or: tig blame [rev] path\n"
7271 " or: tig status\n"
7272 " or: tig < [git command output]\n"
7273 "\n"
7274 "Options:\n"
7275 " -v, --version Show version and exit\n"
7276 " -h, --help Show help message and exit";
7278 static void __NORETURN
7279 quit(int sig)
7280 {
7281 /* XXX: Restore tty modes and let the OS cleanup the rest! */
7282 if (cursed)
7283 endwin();
7284 exit(0);
7285 }
7287 static void __NORETURN
7288 die(const char *err, ...)
7289 {
7290 va_list args;
7292 endwin();
7294 va_start(args, err);
7295 fputs("tig: ", stderr);
7296 vfprintf(stderr, err, args);
7297 fputs("\n", stderr);
7298 va_end(args);
7300 exit(1);
7301 }
7303 static void
7304 warn(const char *msg, ...)
7305 {
7306 va_list args;
7308 va_start(args, msg);
7309 fputs("tig warning: ", stderr);
7310 vfprintf(stderr, msg, args);
7311 fputs("\n", stderr);
7312 va_end(args);
7313 }
7315 static int
7316 read_filter_args(char *name, size_t namelen, char *value, size_t valuelen, void *data)
7317 {
7318 const char ***filter_args = data;
7320 return argv_append(filter_args, name) ? OK : ERR;
7321 }
7323 static void
7324 filter_rev_parse(const char ***args, const char *arg1, const char *arg2, const char *argv[])
7325 {
7326 const char *rev_parse_argv[SIZEOF_ARG] = { "git", "rev-parse", arg1, arg2 };
7327 const char **all_argv = NULL;
7329 if (!argv_append_array(&all_argv, rev_parse_argv) ||
7330 !argv_append_array(&all_argv, argv) ||
7331 !io_run_load(all_argv, "\n", read_filter_args, args) == ERR)
7332 die("Failed to split arguments");
7333 argv_free(all_argv);
7334 free(all_argv);
7335 }
7337 static void
7338 filter_options(const char *argv[])
7339 {
7340 filter_rev_parse(&opt_file_argv, "--no-revs", "--no-flags", argv);
7341 filter_rev_parse(&opt_diff_argv, "--no-revs", "--flags", argv);
7342 filter_rev_parse(&opt_rev_argv, "--symbolic", "--revs-only", argv);
7343 }
7345 static enum request
7346 parse_options(int argc, const char *argv[])
7347 {
7348 enum request request = REQ_VIEW_MAIN;
7349 const char *subcommand;
7350 bool seen_dashdash = FALSE;
7351 const char **filter_argv = NULL;
7352 int i;
7354 if (!isatty(STDIN_FILENO))
7355 return REQ_VIEW_PAGER;
7357 if (argc <= 1)
7358 return REQ_VIEW_MAIN;
7360 subcommand = argv[1];
7361 if (!strcmp(subcommand, "status")) {
7362 if (argc > 2)
7363 warn("ignoring arguments after `%s'", subcommand);
7364 return REQ_VIEW_STATUS;
7366 } else if (!strcmp(subcommand, "blame")) {
7367 if (argc <= 2 || argc > 4)
7368 die("invalid number of options to blame\n\n%s", usage);
7370 i = 2;
7371 if (argc == 4) {
7372 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
7373 i++;
7374 }
7376 string_ncopy(opt_file, argv[i], strlen(argv[i]));
7377 return REQ_VIEW_BLAME;
7379 } else if (!strcmp(subcommand, "show")) {
7380 request = REQ_VIEW_DIFF;
7382 } else {
7383 subcommand = NULL;
7384 }
7386 for (i = 1 + !!subcommand; i < argc; i++) {
7387 const char *opt = argv[i];
7389 if (seen_dashdash) {
7390 argv_append(&opt_file_argv, opt);
7391 continue;
7393 } else if (!strcmp(opt, "--")) {
7394 seen_dashdash = TRUE;
7395 continue;
7397 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
7398 printf("tig version %s\n", TIG_VERSION);
7399 quit(0);
7401 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
7402 printf("%s\n", usage);
7403 quit(0);
7405 } else if (!strcmp(opt, "--all")) {
7406 argv_append(&opt_rev_argv, opt);
7407 continue;
7408 }
7410 if (!argv_append(&filter_argv, opt))
7411 die("command too long");
7412 }
7414 if (filter_argv)
7415 filter_options(filter_argv);
7417 return request;
7418 }
7420 int
7421 main(int argc, const char *argv[])
7422 {
7423 const char *codeset = "UTF-8";
7424 enum request request = parse_options(argc, argv);
7425 struct view *view;
7426 size_t i;
7428 signal(SIGINT, quit);
7429 signal(SIGPIPE, SIG_IGN);
7431 if (setlocale(LC_ALL, "")) {
7432 codeset = nl_langinfo(CODESET);
7433 }
7435 if (load_repo_info() == ERR)
7436 die("Failed to load repo info.");
7438 if (load_options() == ERR)
7439 die("Failed to load user config.");
7441 if (load_git_config() == ERR)
7442 die("Failed to load repo config.");
7444 /* Require a git repository unless when running in pager mode. */
7445 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7446 die("Not a git repository");
7448 if (*opt_encoding && strcmp(codeset, "UTF-8")) {
7449 opt_iconv_in = iconv_open("UTF-8", opt_encoding);
7450 if (opt_iconv_in == ICONV_NONE)
7451 die("Failed to initialize character set conversion");
7452 }
7454 if (codeset && strcmp(codeset, "UTF-8")) {
7455 opt_iconv_out = iconv_open(codeset, "UTF-8");
7456 if (opt_iconv_out == ICONV_NONE)
7457 die("Failed to initialize character set conversion");
7458 }
7460 if (load_refs() == ERR)
7461 die("Failed to load refs.");
7463 foreach_view (view, i) {
7464 if (getenv(view->cmd_env))
7465 warn("Use of the %s environment variable is deprecated,"
7466 " use options or TIG_DIFF_ARGS instead",
7467 view->cmd_env);
7468 if (!argv_from_env(view->ops->argv, view->cmd_env))
7469 die("Too many arguments in the `%s` environment variable",
7470 view->cmd_env);
7471 }
7473 init_display();
7475 while (view_driver(display[current_view], request)) {
7476 int key = get_input(0);
7478 view = display[current_view];
7479 request = get_keybinding(view->keymap, key);
7481 /* Some low-level request handling. This keeps access to
7482 * status_win restricted. */
7483 switch (request) {
7484 case REQ_NONE:
7485 report("Unknown key, press %s for help",
7486 get_key(view->keymap, REQ_VIEW_HELP));
7487 break;
7488 case REQ_PROMPT:
7489 {
7490 char *cmd = read_prompt(":");
7492 if (cmd && isdigit(*cmd)) {
7493 int lineno = view->lineno + 1;
7495 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7496 select_view_line(view, lineno - 1);
7497 report("");
7498 } else {
7499 report("Unable to parse '%s' as a line number", cmd);
7500 }
7502 } else if (cmd) {
7503 struct view *next = VIEW(REQ_VIEW_PAGER);
7504 const char *argv[SIZEOF_ARG] = { "git" };
7505 int argc = 1;
7507 /* When running random commands, initially show the
7508 * command in the title. However, it maybe later be
7509 * overwritten if a commit line is selected. */
7510 string_ncopy(next->ref, cmd, strlen(cmd));
7512 if (!argv_from_string(argv, &argc, cmd)) {
7513 report("Too many arguments");
7514 } else if (!prepare_update(next, argv, NULL)) {
7515 report("Failed to format command");
7516 } else {
7517 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7518 }
7519 }
7521 request = REQ_NONE;
7522 break;
7523 }
7524 case REQ_SEARCH:
7525 case REQ_SEARCH_BACK:
7526 {
7527 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7528 char *search = read_prompt(prompt);
7530 if (search)
7531 string_ncopy(opt_search, search, strlen(search));
7532 else if (*opt_search)
7533 request = request == REQ_SEARCH ?
7534 REQ_FIND_NEXT :
7535 REQ_FIND_PREV;
7536 else
7537 request = REQ_NONE;
7538 break;
7539 }
7540 default:
7541 break;
7542 }
7543 }
7545 quit(0);
7547 return 0;
7548 }