1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
2 * See license info at the bottom. */
9 * tig - text-mode interface for git
15 * tig [options] [--] [git log options]
16 * tig [options] log [git log options]
17 * tig [options] diff [git diff options]
18 * tig [options] show [git show options]
19 * tig [options] < [git command output]
23 * Browse changes in a git repository. Additionally, tig(1) can also act
24 * as a pager for output of various git commands.
26 * When browsing repositories, tig(1) uses the underlying git commands
27 * to present the user with various views, such as summarized commit log
28 * and showing the commit with the log message, diffstat, and the diff.
30 * Using tig(1) as a pager, it will display input from stdin and try
35 #define VERSION "tig-0.3"
55 static void die(const char *err, ...);
56 static void report(const char *msg, ...);
57 static void set_nonblocking_input(bool loading);
59 #define ABS(x) ((x) >= 0 ? (x) : -(x))
60 #define MIN(x, y) ((x) < (y) ? (x) : (y))
62 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
63 #define STRING_SIZE(x) (sizeof(x) - 1)
65 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
66 #define SIZEOF_CMD 1024 /* Size of command buffer. */
68 /* This color name can be used to refer to the default term colors. */
69 #define COLOR_DEFAULT (-1)
71 #define TIG_HELP "(d)iff, (l)og, (m)ain, (q)uit, (h)elp"
73 /* The format and size of the date column in the main view. */
74 #define DATE_FORMAT "%Y-%m-%d %H:%M"
75 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
77 /* The default interval between line numbers. */
78 #define NUMBER_INTERVAL 1
82 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
84 /* Some ascii-shorthands fitted into the ncurses namespace. */
86 #define KEY_RETURN '\r'
90 /* User action requests. */
92 /* Offset all requests to avoid conflicts with ncurses getch values. */
93 REQ_OFFSET = KEY_MAX + 1,
95 /* XXX: Keep the view request first and in sync with views[]. */
110 REQ_TOGGLE_LINE_NUMBERS,
124 REQ_SCROLL_LINE_DOWN,
126 REQ_SCROLL_PAGE_DOWN,
130 char *name; /* Ref name; tag or head names are shortened. */
131 char id[41]; /* Commit SHA1 ID */
132 unsigned int tag:1; /* Is it a tag? */
133 unsigned int next:1; /* For ref lists: are there more refs? */
137 char id[41]; /* SHA1 ID. */
138 char title[75]; /* The first line of the commit message. */
139 char author[75]; /* The author of the commit. */
140 struct tm time; /* Date from the author ident. */
141 struct ref **refs; /* Repository references; tags & branch heads. */
150 string_ncopy(char *dst, const char *src, int dstlen)
152 strncpy(dst, src, dstlen - 1);
157 /* Shorthand for safely copying into a fixed buffer. */
158 #define string_copy(dst, src) \
159 string_ncopy(dst, src, sizeof(dst))
164 * NOTE: The following is a slightly modified copy of the git project's shell
165 * quoting routines found in the quote.c file.
167 * Help to copy the thing properly quoted for the shell safety. any single
168 * quote is replaced with '\'', any exclamation point is replaced with '\!',
169 * and the whole thing is enclosed in a
172 * original sq_quote result
173 * name ==> name ==> 'name'
174 * a b ==> a b ==> 'a b'
175 * a'b ==> a'\''b ==> 'a'\''b'
176 * a!b ==> a'\!'b ==> 'a'\!'b'
180 sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src)
184 #define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0)
187 while ((c = *src++)) {
188 if (c == '\'' || c == '!') {
208 /* Option and state variables. */
209 static bool opt_line_number = FALSE;
210 static int opt_num_interval = NUMBER_INTERVAL;
211 static int opt_tab_size = TABSIZE;
212 static enum request opt_request = REQ_VIEW_MAIN;
213 static char opt_cmd[SIZEOF_CMD] = "";
214 static FILE *opt_pipe = NULL;
216 /* Returns the index of log or diff command or -1 to exit. */
218 parse_options(int argc, char *argv[])
222 for (i = 1; i < argc; i++) {
227 * Start up in log view using the internal log command.
229 if (!strcmp(opt, "-l")) {
230 opt_request = REQ_VIEW_LOG;
236 * Start up in diff view using the internal diff command.
238 if (!strcmp(opt, "-d")) {
239 opt_request = REQ_VIEW_DIFF;
244 * -n[INTERVAL], --line-number[=INTERVAL]::
245 * Prefix line numbers in log and diff view.
246 * Optionally, with interval different than each line.
248 if (!strncmp(opt, "-n", 2) ||
249 !strncmp(opt, "--line-number", 13)) {
255 } else if (opt[STRING_SIZE("--line-number")] == '=') {
256 num = opt + STRING_SIZE("--line-number=");
260 opt_num_interval = atoi(num);
262 opt_line_number = TRUE;
267 * -t[NSPACES], --tab-size[=NSPACES]::
268 * Set the number of spaces tabs should be expanded to.
270 if (!strncmp(opt, "-t", 2) ||
271 !strncmp(opt, "--tab-size", 10)) {
277 } else if (opt[STRING_SIZE("--tab-size")] == '=') {
278 num = opt + STRING_SIZE("--tab-size=");
282 opt_tab_size = MIN(atoi(num), TABSIZE);
288 * Show version and exit.
290 if (!strcmp(opt, "-v") ||
291 !strcmp(opt, "--version")) {
292 printf("tig version %s\n", VERSION);
298 * End of tig(1) options. Useful when specifying command
299 * options for the main view. Example:
301 * $ tig -- --since=1.month
303 if (!strcmp(opt, "--")) {
309 * log [git log options]::
310 * Open log view using the given git log options.
312 * diff [git diff options]::
313 * Open diff view using the given git diff options.
315 * show [git show options]::
316 * Open diff view using the given git show options.
318 if (!strcmp(opt, "log") ||
319 !strcmp(opt, "diff") ||
320 !strcmp(opt, "show")) {
321 opt_request = opt[0] == 'l'
322 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
327 * [git log options]::
328 * tig(1) will stop the option parsing when the first
329 * command line parameter not starting with "-" is
330 * encountered. All options including this one will be
331 * passed to git log when loading the main view.
332 * This makes it possible to say:
334 * $ tig tag-1.0..HEAD
336 if (opt[0] && opt[0] != '-')
339 die("unknown command '%s'", opt);
342 if (!isatty(STDIN_FILENO)) {
346 * If stdin is a pipe, any log or diff options will be ignored and the
347 * pager view will be opened loading data from stdin. The pager mode
348 * can be used for colorizing output from various git commands.
350 * Example on how to colorize the output of git-show(1):
354 opt_request = REQ_VIEW_PAGER;
357 } else if (i < argc) {
361 * Git command options
362 * ~~~~~~~~~~~~~~~~~~~
363 * All git command options specified on the command line will
364 * be passed to the given command and all will be shell quoted
365 * before they are passed to the shell.
367 * NOTE: If you specify options for the main view, you should
368 * not use the `--pretty` option as this option will be set
369 * automatically to the format expected by the main view.
371 * Example on how to open the log view and show both author and
372 * committer information:
374 * $ tig log --pretty=fuller
376 * See the <<refspec, "Specifying revisions">> section below
377 * for an introduction to revision options supported by the git
378 * commands. For details on specific git command options, refer
379 * to the man page of the command in question.
382 if (opt_request == REQ_VIEW_MAIN)
383 /* XXX: This is vulnerable to the user overriding
384 * options required for the main view parser. */
385 string_copy(opt_cmd, "git log --stat --pretty=raw");
387 string_copy(opt_cmd, "git");
388 buf_size = strlen(opt_cmd);
390 while (buf_size < sizeof(opt_cmd) && i < argc) {
391 opt_cmd[buf_size++] = ' ';
392 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
395 if (buf_size >= sizeof(opt_cmd))
396 die("command too long");
398 opt_cmd[buf_size] = 0;
407 * Line-oriented content detection.
411 /* Line type String to match Foreground Background Attributes
412 * --------- --------------- ---------- ---------- ---------- */ \
414 LINE(DIFF, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
415 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
416 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
417 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
418 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
419 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
420 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
421 LINE(DIFF_COPY, "copy ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
422 LINE(DIFF_RENAME, "rename ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
423 LINE(DIFF_SIM, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
424 LINE(DIFF_DISSIM, "dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
425 /* Pretty print commit header */ \
426 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
427 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
428 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
429 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
430 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
431 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
432 /* Raw commit header */ \
433 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
434 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
435 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
436 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
437 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
439 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
440 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
442 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
443 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
444 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
445 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
446 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
447 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
448 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
449 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
450 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
451 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
452 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD),
455 #define LINE(type, line, fg, bg, attr) \
462 const char *line; /* The start of line to match. */
463 int linelen; /* Size of string to match. */
464 int fg, bg, attr; /* Color and text attributes for the lines. */
467 static struct line_info line_info[] = {
468 #define LINE(type, line, fg, bg, attr) \
469 { (line), STRING_SIZE(line), (fg), (bg), (attr) }
474 static enum line_type
475 get_line_type(char *line)
477 int linelen = strlen(line);
480 for (type = 0; type < ARRAY_SIZE(line_info); type++)
481 /* Case insensitive search matches Signed-off-by lines better. */
482 if (linelen >= line_info[type].linelen &&
483 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
490 get_line_attr(enum line_type type)
492 assert(type < ARRAY_SIZE(line_info));
493 return COLOR_PAIR(type) | line_info[type].attr;
499 int default_bg = COLOR_BLACK;
500 int default_fg = COLOR_WHITE;
505 if (use_default_colors() != ERR) {
510 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
511 struct line_info *info = &line_info[type];
512 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
513 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
515 init_pair(type, fg, bg);
521 * ENVIRONMENT VARIABLES
522 * ---------------------
523 * Several options related to the interface with git can be configured
524 * via environment options.
526 * Repository references
527 * ~~~~~~~~~~~~~~~~~~~~~
528 * Commits that are referenced by tags and branch heads will be marked
529 * by the reference name surrounded by '[' and ']':
531 * 2006-03-26 19:42 Petr Baudis | [cogito-0.17.1] Cogito 0.17.1
533 * If you want to filter out certain directories under `.git/refs/`, say
534 * `tmp` you can do it by setting the following variable:
536 * $ TIG_LS_REMOTE="git ls-remote . | sed /\/tmp\//d" tig
538 * Or set the variable permanently in your environment.
541 * Set command for retrieving all repository references. The command
542 * should output data in the same format as git-ls-remote(1).
545 #define TIG_LS_REMOTE \
546 "git ls-remote . 2>/dev/null"
552 * It is possible to alter which commands are used for the different views.
553 * If for example you prefer commits in the main view to be sorted by date
554 * and only show 500 commits, use:
556 * $ TIG_MAIN_CMD="git log --date-order -n500 --pretty=raw %s" tig
558 * Or set the variable permanently in your environment.
560 * Notice, how `%s` is used to specify the commit reference. There can
561 * be a maximum of 5 `%s` ref specifications.
564 * The command used for the diff view. By default, git show is used
568 * The command used for the log view. If you prefer to have both
569 * author and committer shown in the log view be sure to pass
570 * `--pretty=fuller` to git log.
573 * The command used for the main view. Note, you must always specify
574 * the option: `--pretty=raw` since the main view parser expects to
578 #define TIG_DIFF_CMD \
579 "git show --patch-with-stat --find-copies-harder -B -C %s"
581 #define TIG_LOG_CMD \
582 "git log --cc --stat -n100 %s"
584 #define TIG_MAIN_CMD \
585 "git log --topo-order --stat --pretty=raw %s"
587 /* ... silently ignore that the following are also exported. */
589 #define TIG_HELP_CMD \
590 "man tig 2>/dev/null"
592 #define TIG_PAGER_CMD \
599 * The display consists of a status window on the last line of the screen and
600 * one or more views. The default is to only show one view at the time but it
601 * is possible to split both the main and log view to also show the commit
604 * If you are in the log view and press 'Enter' when the current line is a
605 * commit line, such as:
607 * commit 4d55caff4cc89335192f3e566004b4ceef572521
609 * You will split the view so that the log view is displayed in the top window
610 * and the diff view in the bottom window. You can switch between the two
611 * views by pressing 'Tab'. To maximize the log view again, simply press 'l'.
616 /* The display array of active views and the index of the current view. */
617 static struct view *display[2];
618 static unsigned int current_view;
620 #define foreach_view(view, i) \
621 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
625 * Current head and commit ID
626 * ~~~~~~~~~~~~~~~~~~~~~~~~~~
627 * The viewer keeps track of both what head and commit ID you are currently
628 * viewing. The commit ID will follow the cursor line and change everytime time
629 * you highlight a different commit. Whenever you reopen the diff view it
630 * will be reloaded, if the commit ID changed.
632 * The head ID is used when opening the main and log view to indicate from
633 * what revision to show history.
636 static char ref_commit[SIZEOF_REF] = "HEAD";
637 static char ref_head[SIZEOF_REF] = "HEAD";
641 const char *name; /* View name */
642 const char *cmd_fmt; /* Default command line format */
643 const char *cmd_env; /* Command line set via environment */
644 const char *id; /* Points to either of ref_{head,commit} */
645 size_t objsize; /* Size of objects in the line index */
648 /* What type of content being displayed. Used in the
651 /* Draw one line; @lineno must be < view->height. */
652 bool (*draw)(struct view *view, unsigned int lineno);
653 /* Read one line; updates view->line. */
654 bool (*read)(struct view *view, char *line);
655 /* Depending on view, change display based on current line. */
656 bool (*enter)(struct view *view);
659 char cmd[SIZEOF_CMD]; /* Command buffer */
660 char ref[SIZEOF_REF]; /* Hovered commit reference */
661 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
663 int height, width; /* The width and height of the main window */
664 WINDOW *win; /* The main window */
665 WINDOW *title; /* The title window living below the main window */
668 unsigned long offset; /* Offset of the window top */
669 unsigned long lineno; /* Current line number */
672 unsigned long lines; /* Total number of lines */
673 void **line; /* Line index; each line contains user data */
674 unsigned int digits; /* Number of digits in the lines member. */
681 static struct view_ops pager_ops;
682 static struct view_ops main_ops;
684 #define VIEW_STR(name, cmd, env, ref, objsize, ops) \
685 { name, cmd, #env, ref, objsize, ops }
687 #define VIEW_(id, name, ops, ref, objsize) \
688 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, objsize, ops)
693 * tig(1) presents various 'views' of a repository. Each view is based on output
694 * from an external command, most often 'git log', 'git diff', or 'git show'.
697 * Is the default view, and it shows a one line summary of each commit
698 * in the chosen list of revisions. The summary includes commit date,
699 * author, and the first line of the log message. Additionally, any
700 * repository references, such as tags, will be shown.
703 * Presents a more rich view of the revision log showing the whole log
704 * message and the diffstat.
707 * Shows either the diff of the current working tree, that is, what
708 * has changed since the last commit, or the commit diff complete
709 * with log message, diffstat and diff.
712 * Is used for displaying both input from stdin and output from git
713 * commands entered in the internal prompt.
716 * Displays the information from the tig(1) man page. For the help view
717 * to work you need to have the tig(1) man page installed.
720 static struct view views[] = {
721 VIEW_(MAIN, "main", &main_ops, ref_head, sizeof(struct commit)),
722 VIEW_(DIFF, "diff", &pager_ops, ref_commit, sizeof(char)),
723 VIEW_(LOG, "log", &pager_ops, ref_head, sizeof(char)),
724 VIEW_(HELP, "help", &pager_ops, "static", sizeof(char)),
725 VIEW_(PAGER, "pager", &pager_ops, "static", sizeof(char)),
728 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
732 redraw_view_from(struct view *view, int lineno)
734 assert(0 <= lineno && lineno < view->height);
736 for (; lineno < view->height; lineno++) {
737 if (!view->ops->draw(view, lineno))
741 redrawwin(view->win);
746 redraw_view(struct view *view)
749 redraw_view_from(view, 0);
756 * Each view has a title window which shows the name of the view, current
757 * commit ID if available, and where the view is positioned:
759 * [main] c622eefaa485995320bc743431bae0d497b1d875 - commit 1 of 61 (1%)
761 * By default, the title of the current view is highlighted using bold font.
765 update_view_title(struct view *view)
767 if (view == display[current_view])
768 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
770 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
773 wmove(view->title, 0, 0);
776 wprintw(view->title, "[%s] %s", view->name, view->ref);
778 wprintw(view->title, "[%s]", view->name);
781 wprintw(view->title, " - %s %d of %d (%d%%)",
785 (view->lineno + 1) * 100 / view->lines);
788 wrefresh(view->title);
795 struct view *base = display[0];
796 struct view *view = display[1] ? display[1] : display[0];
798 /* Setup window dimensions */
800 getmaxyx(stdscr, base->height, base->width);
802 /* Make room for the status window. */
806 /* Horizontal split. */
807 view->width = base->width;
808 view->height = SCALE_SPLIT_VIEW(base->height);
809 base->height -= view->height;
811 /* Make room for the title bar. */
815 /* Make room for the title bar. */
820 foreach_view (view, i) {
821 /* Keep the height of all view->win windows one larger than is
822 * required so that the cursor can wrap-around on the last line
823 * without scrolling the window. */
825 view->win = newwin(view->height + 1, 0, offset, 0);
827 die("Failed to create %s view", view->name);
829 scrollok(view->win, TRUE);
831 view->title = newwin(1, 0, offset + view->height, 0);
833 die("Failed to create title window");
836 wresize(view->win, view->height + 1, view->width);
837 mvwin(view->win, offset, 0);
838 mvwin(view->title, offset + view->height, 0);
842 offset += view->height + 1;
852 foreach_view (view, i) {
854 update_view_title(view);
863 /* Scrolling backend */
865 do_scroll_view(struct view *view, int lines)
867 /* The rendering expects the new offset. */
868 view->offset += lines;
870 assert(0 <= view->offset && view->offset < view->lines);
873 /* Redraw the whole screen if scrolling is pointless. */
874 if (view->height < ABS(lines)) {
878 int line = lines > 0 ? view->height - lines : 0;
879 int end = line + ABS(lines);
881 wscrl(view->win, lines);
883 for (; line < end; line++) {
884 if (!view->ops->draw(view, line))
889 /* Move current line into the view. */
890 if (view->lineno < view->offset) {
891 view->lineno = view->offset;
892 view->ops->draw(view, 0);
894 } else if (view->lineno >= view->offset + view->height) {
895 if (view->lineno == view->offset + view->height) {
896 /* Clear the hidden line so it doesn't show if the view
898 wmove(view->win, view->height, 0);
899 wclrtoeol(view->win);
901 view->lineno = view->offset + view->height - 1;
902 view->ops->draw(view, view->lineno - view->offset);
905 assert(view->offset <= view->lineno && view->lineno < view->lines);
907 redrawwin(view->win);
912 /* Scroll frontend */
914 scroll_view(struct view *view, enum request request)
919 case REQ_SCROLL_PAGE_DOWN:
920 lines = view->height;
921 case REQ_SCROLL_LINE_DOWN:
922 if (view->offset + lines > view->lines)
923 lines = view->lines - view->offset;
925 if (lines == 0 || view->offset + view->height >= view->lines) {
926 report("Cannot scroll beyond the last line");
931 case REQ_SCROLL_PAGE_UP:
932 lines = view->height;
933 case REQ_SCROLL_LINE_UP:
934 if (lines > view->offset)
935 lines = view->offset;
938 report("Cannot scroll beyond the first line");
946 die("request %d not handled in switch", request);
949 do_scroll_view(view, lines);
954 move_view(struct view *view, enum request request)
959 case REQ_MOVE_FIRST_LINE:
960 steps = -view->lineno;
963 case REQ_MOVE_LAST_LINE:
964 steps = view->lines - view->lineno - 1;
967 case REQ_MOVE_PAGE_UP:
968 steps = view->height > view->lineno
969 ? -view->lineno : -view->height;
972 case REQ_MOVE_PAGE_DOWN:
973 steps = view->lineno + view->height >= view->lines
974 ? view->lines - view->lineno - 1 : view->height;
978 case REQ_MOVE_UP_ENTER:
983 case REQ_MOVE_DOWN_ENTER:
988 die("request %d not handled in switch", request);
991 if (steps <= 0 && view->lineno == 0) {
992 report("Cannot move beyond the first line");
995 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
996 report("Cannot move beyond the last line");
1000 /* Move the current line */
1001 view->lineno += steps;
1002 assert(0 <= view->lineno && view->lineno < view->lines);
1004 /* Repaint the old "current" line if we be scrolling */
1005 if (ABS(steps) < view->height) {
1006 int prev_lineno = view->lineno - steps - view->offset;
1008 wmove(view->win, prev_lineno, 0);
1009 wclrtoeol(view->win);
1010 view->ops->draw(view, prev_lineno);
1013 /* Check whether the view needs to be scrolled */
1014 if (view->lineno < view->offset ||
1015 view->lineno >= view->offset + view->height) {
1016 if (steps < 0 && -steps > view->offset) {
1017 steps = -view->offset;
1019 } else if (steps > 0) {
1020 if (view->lineno == view->lines - 1 &&
1021 view->lines > view->height) {
1022 steps = view->lines - view->offset - 1;
1023 if (steps >= view->height)
1024 steps -= view->height - 1;
1028 do_scroll_view(view, steps);
1032 /* Draw the current line */
1033 view->ops->draw(view, view->lineno - view->offset);
1035 redrawwin(view->win);
1036 wrefresh(view->win);
1042 * Incremental updating
1046 begin_update(struct view *view)
1048 const char *id = view->id;
1051 string_copy(view->cmd, opt_cmd);
1053 /* When running random commands, the view ref could have become
1054 * invalid so clear it. */
1057 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1059 if (snprintf(view->cmd, sizeof(view->cmd), format,
1060 id, id, id, id, id) >= sizeof(view->cmd))
1064 /* Special case for the pager view. */
1066 view->pipe = opt_pipe;
1069 view->pipe = popen(view->cmd, "r");
1075 set_nonblocking_input(TRUE);
1080 string_copy(view->vid, id);
1085 for (i = 0; i < view->lines; i++)
1087 free(view->line[i]);
1093 view->start_time = time(NULL);
1099 end_update(struct view *view)
1103 set_nonblocking_input(FALSE);
1104 if (view->pipe == stdin)
1112 update_view(struct view *view)
1114 char buffer[BUFSIZ];
1117 /* The number of lines to read. If too low it will cause too much
1118 * redrawing (and possible flickering), if too high responsiveness
1120 unsigned long lines = view->height;
1121 int redraw_from = -1;
1126 /* Only redraw if lines are visible. */
1127 if (view->offset + view->height >= view->lines)
1128 redraw_from = view->lines - view->offset;
1130 tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines));
1136 while ((line = fgets(buffer, sizeof(buffer), view->pipe))) {
1137 int linelen = strlen(line);
1140 line[linelen - 1] = 0;
1142 if (!view->ops->read(view, line))
1152 lines = view->lines;
1153 for (digits = 0; lines; digits++)
1156 /* Keep the displayed view in sync with line number scaling. */
1157 if (digits != view->digits) {
1158 view->digits = digits;
1163 if (redraw_from >= 0) {
1164 /* If this is an incremental update, redraw the previous line
1165 * since for commits some members could have changed when
1166 * loading the main view. */
1167 if (redraw_from > 0)
1170 /* Incrementally draw avoids flickering. */
1171 redraw_view_from(view, redraw_from);
1174 /* Update the title _after_ the redraw so that if the redraw picks up a
1175 * commit reference in view->ref it'll be available here. */
1176 update_view_title(view);
1178 if (ferror(view->pipe)) {
1179 report("Failed to read: %s", strerror(errno));
1182 } else if (feof(view->pipe)) {
1183 time_t secs = time(NULL) - view->start_time;
1185 if (view == VIEW(REQ_VIEW_HELP)) {
1186 const char *msg = TIG_HELP;
1188 if (view->lines == 0) {
1189 /* Slightly ugly, but abusing view->ref keeps
1190 * the error message. */
1191 string_copy(view->ref, "No help available");
1192 msg = "The tig(1) manpage is not installed";
1199 report("Loaded %d lines in %ld second%s", view->lines, secs,
1200 secs == 1 ? "" : "s");
1207 report("Allocation failure");
1215 OPEN_DEFAULT = 0, /* Use default view switching. */
1216 OPEN_SPLIT = 1, /* Split current view. */
1217 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1218 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1222 open_view(struct view *prev, enum request request, enum open_flags flags)
1224 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1225 bool split = !!(flags & OPEN_SPLIT);
1226 bool reload = !!(flags & OPEN_RELOAD);
1227 struct view *view = VIEW(request);
1228 struct view *displayed;
1231 /* Cycle between displayed views and count the views. */
1232 foreach_view (displayed, nviews) {
1234 view == displayed &&
1235 !strcmp(view->vid, prev->vid)) {
1236 current_view = nviews;
1237 /* Blur out the title of the previous view. */
1238 update_view_title(prev);
1244 if (view == prev && nviews == 1 && !reload) {
1245 report("Already in %s view", view->name);
1249 if ((reload || strcmp(view->vid, view->id)) &&
1250 !begin_update(view)) {
1251 report("Failed to load %s view", view->name);
1256 display[current_view + 1] = view;
1260 /* Maximize the current view. */
1261 memset(display, 0, sizeof(display));
1263 display[current_view] = view;
1268 if (split && prev->lineno - prev->offset >= prev->height) {
1269 /* Take the title line into account. */
1270 int lines = prev->lineno - prev->offset - prev->height + 1;
1272 /* Scroll the view that was split if the current line is
1273 * outside the new limited view. */
1274 do_scroll_view(prev, lines);
1277 if (prev && view != prev) {
1278 /* "Blur" the previous view. */
1280 update_view_title(prev);
1282 /* Continue loading split views in the background. */
1288 /* Clear the old view and let the incremental updating refill
1291 report("Loading...");
1294 if (view == VIEW(REQ_VIEW_HELP))
1295 report("%s", TIG_HELP);
1300 /* If the view is backgrounded the above calls to report()
1301 * won't redraw the view title. */
1303 update_view_title(view);
1308 * User request switch noodle
1312 view_driver(struct view *view, enum request request)
1319 case REQ_MOVE_PAGE_UP:
1320 case REQ_MOVE_PAGE_DOWN:
1321 case REQ_MOVE_FIRST_LINE:
1322 case REQ_MOVE_LAST_LINE:
1323 move_view(view, request);
1326 case REQ_SCROLL_LINE_DOWN:
1327 case REQ_SCROLL_LINE_UP:
1328 case REQ_SCROLL_PAGE_DOWN:
1329 case REQ_SCROLL_PAGE_UP:
1330 scroll_view(view, request);
1337 case REQ_VIEW_PAGER:
1338 open_view(view, request, OPEN_DEFAULT);
1341 case REQ_MOVE_UP_ENTER:
1342 case REQ_MOVE_DOWN_ENTER:
1343 move_view(view, request);
1348 report("Nothing to enter");
1351 return view->ops->enter(view);
1355 int nviews = display[1] ? 2 : 1;
1356 int next_view = (current_view + 1) % nviews;
1358 if (next_view == current_view) {
1359 report("Only one view is displayed");
1363 current_view = next_view;
1364 /* Blur out the title of the previous view. */
1365 update_view_title(view);
1369 case REQ_TOGGLE_LINE_NUMBERS:
1370 opt_line_number = !opt_line_number;
1375 /* Always reload^Wrerun commands from the prompt. */
1376 open_view(view, opt_request, OPEN_RELOAD);
1379 case REQ_STOP_LOADING:
1380 foreach_view (view, i) {
1382 report("Stopped loaded the %s view", view->name),
1387 case REQ_SHOW_VERSION:
1388 report("Version: %s", VERSION);
1391 case REQ_SCREEN_RESIZE:
1394 case REQ_SCREEN_REDRAW:
1398 case REQ_SCREEN_UPDATE:
1402 case REQ_VIEW_CLOSE:
1404 view = display[(current_view + 1) % ARRAY_SIZE(display)];
1405 memset(display, 0, sizeof(display));
1407 display[current_view] = view;
1417 /* An unknown key will show most commonly used commands. */
1418 report("Unknown key, press 'h' for help");
1427 * View backend handlers
1431 pager_draw(struct view *view, unsigned int lineno)
1433 enum line_type type;
1438 if (view->offset + lineno >= view->lines)
1441 line = view->line[view->offset + lineno];
1442 type = get_line_type(line);
1444 wmove(view->win, lineno, 0);
1446 if (view->offset + lineno == view->lineno) {
1447 if (type == LINE_COMMIT) {
1448 string_copy(view->ref, line + 7);
1449 string_copy(ref_commit, view->ref);
1453 wchgat(view->win, -1, 0, type, NULL);
1456 attr = get_line_attr(type);
1457 wattrset(view->win, attr);
1459 linelen = strlen(line);
1461 if (opt_line_number || opt_tab_size < TABSIZE) {
1462 static char spaces[] = " ";
1463 int col_offset = 0, col = 0;
1465 if (opt_line_number) {
1466 unsigned long real_lineno = view->offset + lineno + 1;
1468 if (real_lineno == 1 ||
1469 (real_lineno % opt_num_interval) == 0) {
1470 wprintw(view->win, "%.*d", view->digits, real_lineno);
1473 waddnstr(view->win, spaces,
1474 MIN(view->digits, STRING_SIZE(spaces)));
1476 waddstr(view->win, ": ");
1477 col_offset = view->digits + 2;
1480 while (line && col_offset + col < view->width) {
1481 int cols_max = view->width - col_offset - col;
1485 if (*line == '\t') {
1486 assert(sizeof(spaces) > TABSIZE);
1489 cols = opt_tab_size - (col % opt_tab_size);
1492 line = strchr(line, '\t');
1493 cols = line ? line - text : strlen(text);
1496 waddnstr(view->win, text, MIN(cols, cols_max));
1501 int col = 0, pos = 0;
1503 for (; pos < linelen && col < view->width; pos++, col++)
1504 if (line[pos] == '\t')
1505 col += TABSIZE - (col % TABSIZE) - 1;
1507 waddnstr(view->win, line, pos);
1514 pager_read(struct view *view, char *line)
1516 /* Compress empty lines in the help view. */
1517 if (view == VIEW(REQ_VIEW_HELP) &&
1520 !*((char *) view->line[view->lines - 1]))
1523 view->line[view->lines] = strdup(line);
1524 if (!view->line[view->lines])
1532 pager_enter(struct view *view)
1534 char *line = view->line[view->lineno];
1536 if (view == VIEW(REQ_VIEW_DIFF)) {
1537 scroll_view(view, REQ_SCROLL_LINE_DOWN);
1541 if (get_line_type(line) == LINE_COMMIT) {
1542 if (view == VIEW(REQ_VIEW_LOG))
1543 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT | OPEN_BACKGROUNDED);
1545 open_view(view, REQ_VIEW_DIFF, OPEN_DEFAULT);
1551 static struct view_ops pager_ops = {
1559 static struct ref **get_refs(char *id);
1562 main_draw(struct view *view, unsigned int lineno)
1564 char buf[DATE_COLS + 1];
1565 struct commit *commit;
1566 enum line_type type;
1570 if (view->offset + lineno >= view->lines)
1573 commit = view->line[view->offset + lineno];
1574 if (!*commit->author)
1577 wmove(view->win, lineno, col);
1579 if (view->offset + lineno == view->lineno) {
1580 string_copy(view->ref, commit->id);
1581 string_copy(ref_commit, view->ref);
1583 wattrset(view->win, get_line_attr(type));
1584 wchgat(view->win, -1, 0, type, NULL);
1587 type = LINE_MAIN_COMMIT;
1588 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
1591 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
1592 waddnstr(view->win, buf, timelen);
1593 waddstr(view->win, " ");
1596 wmove(view->win, lineno, col);
1597 if (type != LINE_CURSOR)
1598 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
1600 if (strlen(commit->author) > 19) {
1601 waddnstr(view->win, commit->author, 18);
1602 if (type != LINE_CURSOR)
1603 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
1604 waddch(view->win, '~');
1606 waddstr(view->win, commit->author);
1610 if (type != LINE_CURSOR)
1611 wattrset(view->win, A_NORMAL);
1613 mvwaddch(view->win, lineno, col, ACS_LTEE);
1614 wmove(view->win, lineno, col + 2);
1621 if (type == LINE_CURSOR)
1623 else if (commit->refs[i]->tag)
1624 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
1626 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
1627 waddstr(view->win, "[");
1628 waddstr(view->win, commit->refs[i]->name);
1629 waddstr(view->win, "]");
1630 if (type != LINE_CURSOR)
1631 wattrset(view->win, A_NORMAL);
1632 waddstr(view->win, " ");
1633 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
1634 } while (commit->refs[i++]->next);
1637 if (type != LINE_CURSOR)
1638 wattrset(view->win, get_line_attr(type));
1641 int titlelen = strlen(commit->title);
1643 if (col + titlelen > view->width)
1644 titlelen = view->width - col;
1646 waddnstr(view->win, commit->title, titlelen);
1652 /* Reads git log --pretty=raw output and parses it into the commit struct. */
1654 main_read(struct view *view, char *line)
1656 enum line_type type = get_line_type(line);
1657 struct commit *commit;
1661 commit = calloc(1, sizeof(struct commit));
1665 line += STRING_SIZE("commit ");
1667 view->line[view->lines++] = commit;
1668 string_copy(commit->id, line);
1669 commit->refs = get_refs(commit->id);
1674 char *ident = line + STRING_SIZE("author ");
1675 char *end = strchr(ident, '<');
1678 for (; end > ident && isspace(end[-1]); end--) ;
1682 commit = view->line[view->lines - 1];
1683 string_copy(commit->author, ident);
1685 /* Parse epoch and timezone */
1687 char *secs = strchr(end + 1, '>');
1691 if (!secs || secs[1] != ' ')
1695 time = (time_t) atol(secs);
1696 zone = strchr(secs, ' ');
1697 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
1701 tz = ('0' - zone[1]) * 60 * 60 * 10;
1702 tz += ('0' - zone[2]) * 60 * 60;
1703 tz += ('0' - zone[3]) * 60;
1704 tz += ('0' - zone[4]) * 60;
1711 gmtime_r(&time, &commit->time);
1716 /* We should only ever end up here if there has already been a
1717 * commit line, however, be safe. */
1718 if (view->lines == 0)
1721 /* Fill in the commit title if it has not already been set. */
1722 commit = view->line[view->lines - 1];
1723 if (commit->title[0])
1726 /* Require titles to start with a non-space character at the
1727 * offset used by git log. */
1728 /* FIXME: More gracefull handling of titles; append "..." to
1729 * shortened titles, etc. */
1730 if (strncmp(line, " ", 4) ||
1734 string_copy(commit->title, line + 4);
1741 main_enter(struct view *view)
1743 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT | OPEN_BACKGROUNDED);
1747 static struct view_ops main_ops = {
1758 * Below the default key bindings are shown.
1766 static struct keymap keymap[] = {
1771 * Switch to main view.
1773 * Switch to diff view.
1775 * Switch to log view.
1777 * Switch to pager view.
1781 * Close view if multiple views are open, else quit.
1783 * This key is "context sensitive" depending on what view you are
1784 * currently in. When in log view on a commit line or in the main
1785 * view, split the view and show the commit diff. In the diff view
1786 * pressing Enter will simply scroll the view one line down.
1788 * Switch to next view.
1790 { 'm', REQ_VIEW_MAIN },
1791 { 'd', REQ_VIEW_DIFF },
1792 { 'l', REQ_VIEW_LOG },
1793 { 'p', REQ_VIEW_PAGER },
1794 { 'h', REQ_VIEW_HELP },
1796 { 'q', REQ_VIEW_CLOSE },
1797 { KEY_TAB, REQ_VIEW_NEXT },
1798 { KEY_RETURN, REQ_ENTER },
1804 * Move cursor one line up.
1806 * Move cursor one line down.
1808 * Move cursor one line up and enter. When used in the main view
1809 * this will always show the diff of the current commit in the
1812 * Move cursor one line down and enter.
1815 * Move cursor one page up.
1818 * Move cursor one page down.
1820 * Jump to first line.
1822 * Jump to last line.
1824 { KEY_UP, REQ_MOVE_UP },
1825 { KEY_DOWN, REQ_MOVE_DOWN },
1826 { 'k', REQ_MOVE_UP_ENTER },
1827 { 'j', REQ_MOVE_DOWN_ENTER },
1828 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1829 { KEY_END, REQ_MOVE_LAST_LINE },
1830 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1831 { ' ', REQ_MOVE_PAGE_DOWN },
1832 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1833 { 'b', REQ_MOVE_PAGE_UP },
1839 * Scroll view one line up.
1841 * Scroll view one line down.
1843 * Scroll view one page up.
1845 * Scroll view one page down.
1847 { KEY_IC, REQ_SCROLL_LINE_UP },
1848 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1849 { 'w', REQ_SCROLL_PAGE_UP },
1850 { 's', REQ_SCROLL_PAGE_DOWN },
1860 * Stop all background loading. This can be useful if you use
1861 * tig(1) in a repository with a long history without limiting
1866 * Toggle line numbers on/off.
1868 * Open prompt. This allows you to specify what git command
1874 { 'z', REQ_STOP_LOADING },
1875 { 'v', REQ_SHOW_VERSION },
1876 { 'r', REQ_SCREEN_REDRAW },
1877 { 'n', REQ_TOGGLE_LINE_NUMBERS },
1878 { ':', REQ_PROMPT },
1880 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
1881 { ERR, REQ_SCREEN_UPDATE },
1883 /* Use the ncurses SIGWINCH handler. */
1884 { KEY_RESIZE, REQ_SCREEN_RESIZE },
1888 get_request(int key)
1892 for (i = 0; i < ARRAY_SIZE(keymap); i++)
1893 if (keymap[i].alias == key)
1894 return keymap[i].request;
1896 return (enum request) key;
1904 /* Whether or not the curses interface has been initialized. */
1905 bool cursed = FALSE;
1907 /* The status window is used for polling keystrokes. */
1908 static WINDOW *status_win;
1910 /* Update status and title window. */
1912 report(const char *msg, ...)
1914 static bool empty = TRUE;
1915 struct view *view = display[current_view];
1917 if (!empty || *msg) {
1920 va_start(args, msg);
1923 wmove(status_win, 0, 0);
1925 vwprintw(status_win, msg, args);
1930 wrefresh(status_win);
1935 update_view_title(view);
1937 /* Move the cursor to the right-most column of the cursor line.
1939 * XXX: This could turn out to be a bit expensive, but it ensures that
1940 * the cursor does not jump around. */
1942 wmove(view->win, view->lineno - view->offset, view->width - 1);
1943 wrefresh(view->win);
1947 /* Controls when nodelay should be in effect when polling user input. */
1949 set_nonblocking_input(bool loading)
1951 static unsigned int loading_views;
1953 if ((loading == FALSE && loading_views-- == 1) ||
1954 (loading == TRUE && loading_views++ == 0))
1955 nodelay(status_win, loading);
1963 /* Initialize the curses library */
1964 if (isatty(STDIN_FILENO)) {
1965 cursed = !!initscr();
1967 /* Leave stdin and stdout alone when acting as a pager. */
1968 FILE *io = fopen("/dev/tty", "r+");
1970 cursed = !!newterm(NULL, io, io);
1974 die("Failed to initialize curses");
1976 nonl(); /* Tell curses not to do NL->CR/NL on output */
1977 cbreak(); /* Take input chars one at a time, no wait for \n */
1978 noecho(); /* Don't echo input */
1979 leaveok(stdscr, TRUE);
1984 getmaxyx(stdscr, y, x);
1985 status_win = newwin(1, 0, y - 1, 0);
1987 die("Failed to create status window");
1989 /* Enable keyboard mapping */
1990 keypad(status_win, TRUE);
1991 wbkgdset(status_win, get_line_attr(LINE_STATUS));
1996 * Repository references
1999 static struct ref *refs;
2000 static size_t refs_size;
2002 static struct ref **
2005 struct ref **id_refs = NULL;
2006 size_t id_refs_size = 0;
2009 for (i = 0; i < refs_size; i++) {
2012 if (strcmp(id, refs[i].id))
2015 tmp = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
2023 if (id_refs_size > 0)
2024 id_refs[id_refs_size - 1]->next = 1;
2025 id_refs[id_refs_size] = &refs[i];
2027 /* XXX: The properties of the commit chains ensures that we can
2028 * safely modify the shared ref. The repo references will
2029 * always be similar for the same id. */
2030 id_refs[id_refs_size]->next = 0;
2040 const char *cmd_env = getenv("TIG_LS_REMOTE");
2041 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
2042 FILE *pipe = popen(cmd, "r");
2043 char buffer[BUFSIZ];
2049 while ((line = fgets(buffer, sizeof(buffer), pipe))) {
2050 char *name = strchr(line, '\t');
2054 bool tag_commit = FALSE;
2060 namelen = strlen(name) - 1;
2062 /* Commits referenced by tags has "^{}" appended. */
2063 if (name[namelen - 1] == '}') {
2064 while (namelen > 0 && name[namelen] != '^')
2071 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
2074 name += STRING_SIZE("refs/tags/");
2077 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
2078 name += STRING_SIZE("refs/heads/");
2080 } else if (!strcmp(name, "HEAD")) {
2084 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
2088 ref = &refs[refs_size++];
2090 ref->name = strdup(name);
2094 string_copy(ref->id, line);
2103 die("Not a git repository");
2113 #define __NORETURN __attribute__((__noreturn__))
2118 static void __NORETURN
2121 /* XXX: Restore tty modes and let the OS cleanup the rest! */
2127 static void __NORETURN
2128 die(const char *err, ...)
2134 va_start(args, err);
2135 fputs("tig: ", stderr);
2136 vfprintf(stderr, err, args);
2137 fputs("\n", stderr);
2144 main(int argc, char *argv[])
2147 enum request request;
2150 signal(SIGINT, quit);
2152 if (!parse_options(argc, argv))
2155 if (load_refs() == ERR)
2156 die("Failed to load refs.");
2158 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2159 view->cmd_env = getenv(view->cmd_env);
2161 request = opt_request;
2165 while (view_driver(display[current_view], request)) {
2169 foreach_view (view, i)
2172 /* Refresh, accept single keystroke of input */
2173 key = wgetch(status_win);
2174 request = get_request(key);
2176 /* Some low-level request handling. This keeps access to
2177 * status_win restricted. */
2181 /* Temporarily switch to line-oriented and echoed
2186 if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) {
2187 memcpy(opt_cmd, "git ", 4);
2188 opt_request = REQ_VIEW_PAGER;
2197 case REQ_SCREEN_RESIZE:
2201 getmaxyx(stdscr, height, width);
2203 /* Resize the status view and let the view driver take
2204 * care of resizing the displayed views. */
2205 wresize(status_win, 1, width);
2206 mvwin(status_win, height - 1, 0);
2207 wrefresh(status_win);
2222 * Revision specification
2223 * ----------------------
2224 * This section describes various ways to specify what revisions to display
2225 * or otherwise limit the view to. tig(1) does not itself parse the described
2226 * revision options so refer to the relevant git man pages for futher
2227 * information. Relevant man pages besides git-log(1) are git-diff(1) and
2230 * You can tune the interaction with git by making use of the options
2231 * explained in this section. For example, by configuring the environment
2232 * variables described in the <<view-commands, "View commands">> section.
2234 * Limit by path name
2235 * ~~~~~~~~~~~~~~~~~~
2236 * If you are interested only in those revisions that made changes to a
2237 * specific file (or even several files) list the files like this:
2239 * $ tig log Makefile README
2241 * To avoid ambiguity with repository references such as tag name, be sure
2242 * to separate file names from other git options using "\--". So if you
2243 * have a file named 'master' it will clash with the reference named
2244 * 'master', and thus you will have to use:
2246 * $ tig log -- master
2248 * NOTE: For the main view, avoiding ambiguity will in some cases require
2249 * you to specify two "\--" options. The first will make tig(1) stop
2250 * option processing and the latter will be passed to git log.
2252 * Limit by date or number
2253 * ~~~~~~~~~~~~~~~~~~~~~~~
2254 * To speed up interaction with git, you can limit the amount of commits
2255 * to show both for the log and main view. Either limit by date using
2256 * e.g. `--since=1.month` or limit by the number of commits using `-n400`.
2258 * If you are only interested in changed that happened between two dates
2261 * $ tig -- --after="May 5th" --before="2006-05-16 15:44"
2263 * NOTE: If you want to avoid having to quote dates containing spaces you
2264 * can use "." instead, e.g. `--after=May.5th`.
2266 * Limiting by commit ranges
2267 * ~~~~~~~~~~~~~~~~~~~~~~~~~
2268 * Alternatively, commits can be limited to a specific range, such as
2269 * "all commits between 'tag-1.0' and 'tag-2.0'". For example:
2271 * $ tig log tag-1.0..tag-2.0
2273 * This way of commit limiting makes it trivial to only browse the commits
2274 * which haven't been pushed to a remote branch. Assuming 'origin' is your
2275 * upstream remote branch, using:
2277 * $ tig log origin..HEAD
2279 * will list what will be pushed to the remote branch. Optionally, the ending
2280 * 'HEAD' can be left out since it is implied.
2282 * Limiting by reachability
2283 * ~~~~~~~~~~~~~~~~~~~~~~~~
2284 * Git interprets the range specifier "tag-1.0..tag-2.0" as
2285 * "all commits reachable from 'tag-2.0' but not from 'tag-1.0'".
2286 * Where reachability refers to what commits are ancestors (or part of the
2287 * history) of the branch or tagged revision in question.
2289 * If you prefer to specify which commit to preview in this way use the
2292 * $ tig log tag-2.0 ^tag-1.0
2294 * You can think of '^' as a negation operator. Using this alternate syntax,
2295 * it is possible to further prune commits by specifying multiple branch
2298 * Combining revisions specification
2299 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2300 * Revisions options can to some degree be combined, which makes it possible
2301 * to say "show at most 20 commits from within the last month that changed
2302 * files under the Documentation/ directory."
2304 * $ tig -- --since=1.month -n20 -- Documentation/
2306 * Examining all repository references
2307 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2308 * In some cases, it can be useful to query changes across all references
2309 * in a repository. An example is to ask "did any line of development in
2310 * this repository change a particular file within the last week". This
2311 * can be accomplished using:
2313 * $ tig -- --all --since=1.week -- Makefile
2317 * Known bugs and problems:
2319 * - If the screen width is very small the main view can draw
2320 * outside the current view causing bad wrapping. Same goes
2321 * for title and status windows.
2325 * Features that should be explored.
2333 * Copyright (c) Jonas Fonseca <fonseca@diku.dk>, 2006
2335 * This program is free software; you can redistribute it and/or modify
2336 * it under the terms of the GNU General Public License as published by
2337 * the Free Software Foundation; either version 2 of the License, or
2338 * (at your option) any later version.
2343 * link:http://www.kernel.org/pub/software/scm/git/docs/[git(7)],
2344 * link:http://www.kernel.org/pub/software/scm/cogito/docs/[cogito(7)]
2345 * gitk(1): git repository browser written using tcl/tk,
2346 * qgit(1): git repository browser written using c++/Qt,
2347 * gitview(1): git repository browser written using python/gtk.