1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
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.
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.
15 #define VERSION "tig-0.3"
36 #define __NORETURN __attribute__((__noreturn__))
41 static void __NORETURN die(const char *err, ...);
42 static void report(const char *msg, ...);
43 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
44 static void set_nonblocking_input(bool loading);
45 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
47 #define ABS(x) ((x) >= 0 ? (x) : -(x))
48 #define MIN(x, y) ((x) < (y) ? (x) : (y))
50 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
51 #define STRING_SIZE(x) (sizeof(x) - 1)
53 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
54 #define SIZEOF_CMD 1024 /* Size of command buffer. */
55 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
57 /* This color name can be used to refer to the default term colors. */
58 #define COLOR_DEFAULT (-1)
60 /* The format and size of the date column in the main view. */
61 #define DATE_FORMAT "%Y-%m-%d %H:%M"
62 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
64 #define AUTHOR_COLS 20
66 /* The default interval between line numbers. */
67 #define NUMBER_INTERVAL 1
71 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
73 #define TIG_LS_REMOTE \
74 "git ls-remote . 2>/dev/null"
76 #define TIG_DIFF_CMD \
77 "git show --patch-with-stat --find-copies-harder -B -C %s"
80 "git log --cc --stat -n100 %s"
82 #define TIG_MAIN_CMD \
83 "git log --topo-order --stat --pretty=raw %s"
85 /* XXX: Needs to be defined to the empty string. */
86 #define TIG_HELP_CMD ""
87 #define TIG_PAGER_CMD ""
89 /* Some ascii-shorthands fitted into the ncurses namespace. */
91 #define KEY_RETURN '\r'
96 char *name; /* Ref name; tag or head names are shortened. */
97 char id[41]; /* Commit SHA1 ID */
98 unsigned int tag:1; /* Is it a tag? */
99 unsigned int next:1; /* For ref lists: are there more refs? */
102 static struct ref **get_refs(char *id);
111 set_from_int_map(struct int_map *map, size_t map_size,
112 int *value, const char *name, int namelen)
117 for (i = 0; i < map_size; i++)
118 if (namelen == map[i].namelen &&
119 !strncasecmp(name, map[i].name, namelen)) {
120 *value = map[i].value;
133 string_ncopy(char *dst, const char *src, int dstlen)
135 strncpy(dst, src, dstlen - 1);
140 /* Shorthand for safely copying into a fixed buffer. */
141 #define string_copy(dst, src) \
142 string_ncopy(dst, src, sizeof(dst))
145 chomp_string(char *name)
149 while (isspace(*name))
152 namelen = strlen(name) - 1;
153 while (namelen > 0 && isspace(name[namelen]))
160 string_nformat(char *buf, size_t bufsize, int *bufpos, const char *fmt, ...)
163 int pos = bufpos ? *bufpos : 0;
166 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
172 return pos >= bufsize ? FALSE : TRUE;
175 #define string_format(buf, fmt, args...) \
176 string_nformat(buf, sizeof(buf), NULL, fmt, args)
178 #define string_format_from(buf, from, fmt, args...) \
179 string_nformat(buf, sizeof(buf), from, fmt, args)
182 string_enum_compare(const char *str1, const char *str2, int len)
186 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
188 /* Diff-Header == DIFF_HEADER */
189 for (i = 0; i < len; i++) {
190 if (toupper(str1[i]) == toupper(str2[i]))
193 if (string_enum_sep(str1[i]) &&
194 string_enum_sep(str2[i]))
197 return str1[i] - str2[i];
205 * NOTE: The following is a slightly modified copy of the git project's shell
206 * quoting routines found in the quote.c file.
208 * Help to copy the thing properly quoted for the shell safety. any single
209 * quote is replaced with '\'', any exclamation point is replaced with '\!',
210 * and the whole thing is enclosed in a
213 * original sq_quote result
214 * name ==> name ==> 'name'
215 * a b ==> a b ==> 'a b'
216 * a'b ==> a'\''b ==> 'a'\''b'
217 * a!b ==> a'\!'b ==> 'a'\!'b'
221 sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src)
225 #define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0)
228 while ((c = *src++)) {
229 if (c == '\'' || c == '!') {
249 /* XXX: Keep the view request first and in sync with views[]. */ \
250 REQ_GROUP("View switching") \
251 REQ_(VIEW_MAIN, "Show main view"), \
252 REQ_(VIEW_DIFF, "Show diff view"), \
253 REQ_(VIEW_LOG, "Show log view"), \
254 REQ_(VIEW_HELP, "Show help page"), \
255 REQ_(VIEW_PAGER, "Show pager view"), \
257 REQ_GROUP("View manipulation") \
258 REQ_(ENTER, "Enter current line and scroll"), \
259 REQ_(NEXT, "Move to next"), \
260 REQ_(PREVIOUS, "Move to previous"), \
261 REQ_(VIEW_NEXT, "Move focus to next view"), \
262 REQ_(VIEW_CLOSE, "Close the current view"), \
263 REQ_(QUIT, "Close all views and quit"), \
265 REQ_GROUP("Cursor navigation") \
266 REQ_(MOVE_UP, "Move cursor one line up"), \
267 REQ_(MOVE_DOWN, "Move cursor one line down"), \
268 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
269 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
270 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
271 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
273 REQ_GROUP("Scrolling") \
274 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
275 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
276 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
277 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
280 REQ_(PROMPT, "Bring up the prompt"), \
281 REQ_(SCREEN_UPDATE, "Update the screen"), \
282 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
283 REQ_(SCREEN_RESIZE, "Resize the screen"), \
284 REQ_(SHOW_VERSION, "Show version information"), \
285 REQ_(STOP_LOADING, "Stop all loading views"), \
286 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
287 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"),
290 /* User action requests. */
292 #define REQ_GROUP(help)
293 #define REQ_(req, help) REQ_##req
295 /* Offset all requests to avoid conflicts with ncurses getch values. */
296 REQ_OFFSET = KEY_MAX + 1,
303 struct request_info {
304 enum request request;
308 static struct request_info req_info[] = {
309 #define REQ_GROUP(help) { 0, (help) },
310 #define REQ_(req, help) { REQ_##req, (help) }
320 static const char usage[] =
321 VERSION " (" __DATE__ ")\n"
323 "Usage: tig [options]\n"
324 " or: tig [options] [--] [git log options]\n"
325 " or: tig [options] log [git log options]\n"
326 " or: tig [options] diff [git diff options]\n"
327 " or: tig [options] show [git show options]\n"
328 " or: tig [options] < [git command output]\n"
331 " -l Start up in log view\n"
332 " -d Start up in diff view\n"
333 " -n[I], --line-number[=I] Show line numbers with given interval\n"
334 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
335 " -- Mark end of tig options\n"
336 " -v, --version Show version and exit\n"
337 " -h, --help Show help message and exit\n";
339 /* Option and state variables. */
340 static bool opt_line_number = FALSE;
341 static bool opt_rev_graph = TRUE;
342 static int opt_num_interval = NUMBER_INTERVAL;
343 static int opt_tab_size = TABSIZE;
344 static enum request opt_request = REQ_VIEW_MAIN;
345 static char opt_cmd[SIZEOF_CMD] = "";
346 static char opt_encoding[20] = "";
347 static bool opt_utf8 = TRUE;
348 static FILE *opt_pipe = NULL;
356 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
366 int namelen = strlen(name);
370 if (strncmp(opt, name, namelen))
373 if (opt[namelen] == '=')
374 value = opt + namelen + 1;
377 if (!short_name || opt[1] != short_name)
382 va_start(args, type);
383 if (type == OPT_INT) {
384 number = va_arg(args, int *);
386 *number = atoi(value);
393 /* Returns the index of log or diff command or -1 to exit. */
395 parse_options(int argc, char *argv[])
399 for (i = 1; i < argc; i++) {
402 if (!strcmp(opt, "-l")) {
403 opt_request = REQ_VIEW_LOG;
407 if (!strcmp(opt, "-d")) {
408 opt_request = REQ_VIEW_DIFF;
412 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
413 opt_line_number = TRUE;
417 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
418 opt_tab_size = MIN(opt_tab_size, TABSIZE);
422 if (check_option(opt, 'v', "version", OPT_NONE)) {
423 printf("tig version %s\n", VERSION);
427 if (check_option(opt, 'h', "help", OPT_NONE)) {
432 if (!strcmp(opt, "--")) {
437 if (!strcmp(opt, "log") ||
438 !strcmp(opt, "diff") ||
439 !strcmp(opt, "show")) {
440 opt_request = opt[0] == 'l'
441 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
445 if (opt[0] && opt[0] != '-')
448 die("unknown option '%s'\n\n%s", opt, usage);
451 if (!isatty(STDIN_FILENO)) {
452 opt_request = REQ_VIEW_PAGER;
455 } else if (i < argc) {
458 if (opt_request == REQ_VIEW_MAIN)
459 /* XXX: This is vulnerable to the user overriding
460 * options required for the main view parser. */
461 string_copy(opt_cmd, "git log --stat --pretty=raw");
463 string_copy(opt_cmd, "git");
464 buf_size = strlen(opt_cmd);
466 while (buf_size < sizeof(opt_cmd) && i < argc) {
467 opt_cmd[buf_size++] = ' ';
468 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
471 if (buf_size >= sizeof(opt_cmd))
472 die("command too long");
474 opt_cmd[buf_size] = 0;
478 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
486 * Line-oriented content detection.
490 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
491 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
492 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
493 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
494 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
495 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
496 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
497 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
498 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
499 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
500 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
501 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
502 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
503 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
504 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
505 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
506 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
507 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
508 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
509 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
510 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
511 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
512 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
513 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
514 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
515 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
516 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
517 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
518 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
519 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
520 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
521 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
522 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
523 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
524 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
525 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
526 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
527 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
530 #define LINE(type, line, fg, bg, attr) \
537 const char *name; /* Option name. */
538 int namelen; /* Size of option name. */
539 const char *line; /* The start of line to match. */
540 int linelen; /* Size of string to match. */
541 int fg, bg, attr; /* Color and text attributes for the lines. */
544 static struct line_info line_info[] = {
545 #define LINE(type, line, fg, bg, attr) \
546 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
551 static enum line_type
552 get_line_type(char *line)
554 int linelen = strlen(line);
557 for (type = 0; type < ARRAY_SIZE(line_info); type++)
558 /* Case insensitive search matches Signed-off-by lines better. */
559 if (linelen >= line_info[type].linelen &&
560 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
567 get_line_attr(enum line_type type)
569 assert(type < ARRAY_SIZE(line_info));
570 return COLOR_PAIR(type) | line_info[type].attr;
573 static struct line_info *
574 get_line_info(char *name, int namelen)
578 for (type = 0; type < ARRAY_SIZE(line_info); type++)
579 if (namelen == line_info[type].namelen &&
580 !string_enum_compare(line_info[type].name, name, namelen))
581 return &line_info[type];
589 int default_bg = COLOR_BLACK;
590 int default_fg = COLOR_WHITE;
595 if (use_default_colors() != ERR) {
600 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
601 struct line_info *info = &line_info[type];
602 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
603 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
605 init_pair(type, fg, bg);
611 void *data; /* User data */
621 enum request request;
624 static struct keybinding default_keybindings[] = {
626 { 'm', REQ_VIEW_MAIN },
627 { 'd', REQ_VIEW_DIFF },
628 { 'l', REQ_VIEW_LOG },
629 { 'p', REQ_VIEW_PAGER },
630 { 'h', REQ_VIEW_HELP },
631 { '?', REQ_VIEW_HELP },
633 /* View manipulation */
634 { 'q', REQ_VIEW_CLOSE },
635 { KEY_TAB, REQ_VIEW_NEXT },
636 { KEY_RETURN, REQ_ENTER },
637 { KEY_UP, REQ_PREVIOUS },
638 { KEY_DOWN, REQ_NEXT },
640 /* Cursor navigation */
641 { 'k', REQ_MOVE_UP },
642 { 'j', REQ_MOVE_DOWN },
643 { KEY_HOME, REQ_MOVE_FIRST_LINE },
644 { KEY_END, REQ_MOVE_LAST_LINE },
645 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
646 { ' ', REQ_MOVE_PAGE_DOWN },
647 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
648 { 'b', REQ_MOVE_PAGE_UP },
649 { '-', REQ_MOVE_PAGE_UP },
652 { KEY_IC, REQ_SCROLL_LINE_UP },
653 { KEY_DC, REQ_SCROLL_LINE_DOWN },
654 { 'w', REQ_SCROLL_PAGE_UP },
655 { 's', REQ_SCROLL_PAGE_DOWN },
659 { 'z', REQ_STOP_LOADING },
660 { 'v', REQ_SHOW_VERSION },
661 { 'r', REQ_SCREEN_REDRAW },
662 { 'n', REQ_TOGGLE_LINENO },
663 { 'g', REQ_TOGGLE_REV_GRAPH},
666 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
667 { ERR, REQ_SCREEN_UPDATE },
669 /* Use the ncurses SIGWINCH handler. */
670 { KEY_RESIZE, REQ_SCREEN_RESIZE },
674 get_keybinding(int key)
678 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
679 if (default_keybindings[i].alias == key)
680 return default_keybindings[i].request;
682 return (enum request) key;
691 static struct key key_table[] = {
692 { "Enter", KEY_RETURN },
694 { "Backspace", KEY_BACKSPACE },
696 { "Escape", KEY_ESC },
697 { "Left", KEY_LEFT },
698 { "Right", KEY_RIGHT },
700 { "Down", KEY_DOWN },
701 { "Insert", KEY_IC },
702 { "Delete", KEY_DC },
703 { "Home", KEY_HOME },
705 { "PageUp", KEY_PPAGE },
706 { "PageDown", KEY_NPAGE },
716 { "F10", KEY_F(10) },
717 { "F11", KEY_F(11) },
718 { "F12", KEY_F(12) },
722 get_key(enum request request)
724 static char buf[BUFSIZ];
725 static char key_char[] = "'X'";
732 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
733 struct keybinding *keybinding = &default_keybindings[i];
737 if (keybinding->request != request)
740 for (key = 0; key < ARRAY_SIZE(key_table); key++)
741 if (key_table[key].value == keybinding->alias)
742 seq = key_table[key].name;
745 keybinding->alias < 127 &&
746 isprint(keybinding->alias)) {
747 key_char[1] = (char) keybinding->alias;
754 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
755 return "Too many keybindings!";
764 * User config file handling.
767 static struct int_map color_map[] = {
768 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
780 #define set_color(color, name) \
781 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
783 static struct int_map attr_map[] = {
784 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
794 #define set_attribute(attr, name) \
795 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
797 static int config_lineno;
798 static bool config_errors;
799 static char *config_msg;
801 /* Wants: object fgcolor bgcolor [attr] */
803 option_color_command(int argc, char *argv[])
805 struct line_info *info;
807 if (argc != 3 && argc != 4) {
808 config_msg = "Wrong number of arguments given to color command";
812 info = get_line_info(argv[0], strlen(argv[0]));
814 config_msg = "Unknown color name";
818 if (set_color(&info->fg, argv[1]) == ERR) {
819 config_msg = "Unknown color";
823 if (set_color(&info->bg, argv[2]) == ERR) {
824 config_msg = "Unknown color";
828 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
829 config_msg = "Unknown attribute";
836 /* Wants: name = value */
838 option_set_command(int argc, char *argv[])
841 config_msg = "Wrong number of arguments given to set command";
845 if (strcmp(argv[1], "=")) {
846 config_msg = "No value assigned";
850 if (!strcmp(argv[0], "show-rev-graph")) {
851 opt_rev_graph = (!strcmp(argv[2], "1") ||
852 !strcmp(argv[2], "true") ||
853 !strcmp(argv[2], "yes"));
857 if (!strcmp(argv[0], "line-number-interval")) {
858 opt_num_interval = atoi(argv[2]);
862 if (!strcmp(argv[0], "tab-size")) {
863 opt_tab_size = atoi(argv[2]);
867 if (!strcmp(argv[0], "encoding")) {
868 string_copy(opt_encoding, argv[2]);
876 set_option(char *opt, char *value)
883 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
884 argv[argc++] = value;
891 while (isspace(*value))
895 if (!strcmp(opt, "color"))
896 return option_color_command(argc, argv);
898 if (!strcmp(opt, "set"))
899 return option_set_command(argc, argv);
905 read_option(char *opt, int optlen, char *value, int valuelen)
908 config_msg = "Internal error";
910 optlen = strcspn(opt, "#;");
912 /* The whole line is a commend or empty. */
915 } else if (opt[optlen] != 0) {
916 /* Part of the option name is a comment, so the value part
917 * should be ignored. */
919 opt[optlen] = value[valuelen] = 0;
921 /* Else look for comment endings in the value. */
922 valuelen = strcspn(value, "#;");
926 if (set_option(opt, value) == ERR) {
927 fprintf(stderr, "Error on line %d, near '%.*s' option: %s\n",
928 config_lineno, optlen, opt, config_msg);
929 config_errors = TRUE;
932 /* Always keep going if errors are encountered. */
939 char *home = getenv("HOME");
944 config_errors = FALSE;
946 if (!home || !string_format(buf, "%s/.tigrc", home))
949 /* It's ok that the file doesn't exist. */
950 file = fopen(buf, "r");
954 if (read_properties(file, " \t", read_option) == ERR ||
955 config_errors == TRUE)
956 fprintf(stderr, "Errors while loading %s.\n", buf);
969 /* The display array of active views and the index of the current view. */
970 static struct view *display[2];
971 static unsigned int current_view;
973 #define foreach_view(view, i) \
974 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
976 #define displayed_views() (display[1] != NULL ? 2 : 1)
978 /* Current head and commit ID */
979 static char ref_commit[SIZEOF_REF] = "HEAD";
980 static char ref_head[SIZEOF_REF] = "HEAD";
983 const char *name; /* View name */
984 const char *cmd_fmt; /* Default command line format */
985 const char *cmd_env; /* Command line set via environment */
986 const char *id; /* Points to either of ref_{head,commit} */
988 struct view_ops *ops; /* View operations */
990 char cmd[SIZEOF_CMD]; /* Command buffer */
991 char ref[SIZEOF_REF]; /* Hovered commit reference */
992 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
994 int height, width; /* The width and height of the main window */
995 WINDOW *win; /* The main window */
996 WINDOW *title; /* The title window living below the main window */
999 unsigned long offset; /* Offset of the window top */
1000 unsigned long lineno; /* Current line number */
1002 /* If non-NULL, points to the view that opened this view. If this view
1003 * is closed tig will switch back to the parent view. */
1004 struct view *parent;
1007 unsigned long lines; /* Total number of lines */
1008 struct line *line; /* Line index */
1009 unsigned long line_size;/* Total number of allocated lines */
1010 unsigned int digits; /* Number of digits in the lines member. */
1018 /* What type of content being displayed. Used in the title bar. */
1020 /* Draw one line; @lineno must be < view->height. */
1021 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1022 /* Read one line; updates view->line. */
1023 bool (*read)(struct view *view, char *data);
1024 /* Depending on view, change display based on current line. */
1025 bool (*enter)(struct view *view, struct line *line);
1028 static struct view_ops pager_ops;
1029 static struct view_ops main_ops;
1031 #define VIEW_STR(name, cmd, env, ref, ops) \
1032 { name, cmd, #env, ref, ops }
1034 #define VIEW_(id, name, ops, ref) \
1035 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops)
1038 static struct view views[] = {
1039 VIEW_(MAIN, "main", &main_ops, ref_head),
1040 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1041 VIEW_(LOG, "log", &pager_ops, ref_head),
1042 VIEW_(HELP, "help", &pager_ops, "static"),
1043 VIEW_(PAGER, "pager", &pager_ops, "static"),
1046 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1050 draw_view_line(struct view *view, unsigned int lineno)
1052 if (view->offset + lineno >= view->lines)
1055 return view->ops->draw(view, &view->line[view->offset + lineno], lineno);
1059 redraw_view_from(struct view *view, int lineno)
1061 assert(0 <= lineno && lineno < view->height);
1063 for (; lineno < view->height; lineno++) {
1064 if (!draw_view_line(view, lineno))
1068 redrawwin(view->win);
1069 wrefresh(view->win);
1073 redraw_view(struct view *view)
1076 redraw_view_from(view, 0);
1081 update_view_title(struct view *view)
1083 if (view == display[current_view])
1084 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1086 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1088 werase(view->title);
1089 wmove(view->title, 0, 0);
1092 wprintw(view->title, "[%s] %s", view->name, view->ref);
1094 wprintw(view->title, "[%s]", view->name);
1096 if (view->lines || view->pipe) {
1097 unsigned int view_lines = view->offset + view->height;
1098 unsigned int lines = view->lines
1099 ? MIN(view_lines, view->lines) * 100 / view->lines
1102 wprintw(view->title, " - %s %d of %d (%d%%)",
1110 time_t secs = time(NULL) - view->start_time;
1112 /* Three git seconds are a long time ... */
1114 wprintw(view->title, " %lds", secs);
1117 wmove(view->title, 0, view->width - 1);
1118 wrefresh(view->title);
1122 resize_display(void)
1125 struct view *base = display[0];
1126 struct view *view = display[1] ? display[1] : display[0];
1128 /* Setup window dimensions */
1130 getmaxyx(stdscr, base->height, base->width);
1132 /* Make room for the status window. */
1136 /* Horizontal split. */
1137 view->width = base->width;
1138 view->height = SCALE_SPLIT_VIEW(base->height);
1139 base->height -= view->height;
1141 /* Make room for the title bar. */
1145 /* Make room for the title bar. */
1150 foreach_view (view, i) {
1152 view->win = newwin(view->height, 0, offset, 0);
1154 die("Failed to create %s view", view->name);
1156 scrollok(view->win, TRUE);
1158 view->title = newwin(1, 0, offset + view->height, 0);
1160 die("Failed to create title window");
1163 wresize(view->win, view->height, view->width);
1164 mvwin(view->win, offset, 0);
1165 mvwin(view->title, offset + view->height, 0);
1168 offset += view->height + 1;
1173 redraw_display(void)
1178 foreach_view (view, i) {
1180 update_view_title(view);
1185 update_display_cursor(void)
1187 struct view *view = display[current_view];
1189 /* Move the cursor to the right-most column of the cursor line.
1191 * XXX: This could turn out to be a bit expensive, but it ensures that
1192 * the cursor does not jump around. */
1194 wmove(view->win, view->lineno - view->offset, view->width - 1);
1195 wrefresh(view->win);
1203 /* Scrolling backend */
1205 do_scroll_view(struct view *view, int lines, bool redraw)
1207 /* The rendering expects the new offset. */
1208 view->offset += lines;
1210 assert(0 <= view->offset && view->offset < view->lines);
1213 /* Redraw the whole screen if scrolling is pointless. */
1214 if (view->height < ABS(lines)) {
1218 int line = lines > 0 ? view->height - lines : 0;
1219 int end = line + ABS(lines);
1221 wscrl(view->win, lines);
1223 for (; line < end; line++) {
1224 if (!draw_view_line(view, line))
1229 /* Move current line into the view. */
1230 if (view->lineno < view->offset) {
1231 view->lineno = view->offset;
1232 draw_view_line(view, 0);
1234 } else if (view->lineno >= view->offset + view->height) {
1235 if (view->lineno == view->offset + view->height) {
1236 /* Clear the hidden line so it doesn't show if the view
1237 * is scrolled up. */
1238 wmove(view->win, view->height, 0);
1239 wclrtoeol(view->win);
1241 view->lineno = view->offset + view->height - 1;
1242 draw_view_line(view, view->lineno - view->offset);
1245 assert(view->offset <= view->lineno && view->lineno < view->lines);
1250 redrawwin(view->win);
1251 wrefresh(view->win);
1255 /* Scroll frontend */
1257 scroll_view(struct view *view, enum request request)
1262 case REQ_SCROLL_PAGE_DOWN:
1263 lines = view->height;
1264 case REQ_SCROLL_LINE_DOWN:
1265 if (view->offset + lines > view->lines)
1266 lines = view->lines - view->offset;
1268 if (lines == 0 || view->offset + view->height >= view->lines) {
1269 report("Cannot scroll beyond the last line");
1274 case REQ_SCROLL_PAGE_UP:
1275 lines = view->height;
1276 case REQ_SCROLL_LINE_UP:
1277 if (lines > view->offset)
1278 lines = view->offset;
1281 report("Cannot scroll beyond the first line");
1289 die("request %d not handled in switch", request);
1292 do_scroll_view(view, lines, TRUE);
1297 move_view(struct view *view, enum request request, bool redraw)
1302 case REQ_MOVE_FIRST_LINE:
1303 steps = -view->lineno;
1306 case REQ_MOVE_LAST_LINE:
1307 steps = view->lines - view->lineno - 1;
1310 case REQ_MOVE_PAGE_UP:
1311 steps = view->height > view->lineno
1312 ? -view->lineno : -view->height;
1315 case REQ_MOVE_PAGE_DOWN:
1316 steps = view->lineno + view->height >= view->lines
1317 ? view->lines - view->lineno - 1 : view->height;
1329 die("request %d not handled in switch", request);
1332 if (steps <= 0 && view->lineno == 0) {
1333 report("Cannot move beyond the first line");
1336 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1337 report("Cannot move beyond the last line");
1341 /* Move the current line */
1342 view->lineno += steps;
1343 assert(0 <= view->lineno && view->lineno < view->lines);
1345 /* Repaint the old "current" line if we be scrolling */
1346 if (ABS(steps) < view->height) {
1347 int prev_lineno = view->lineno - steps - view->offset;
1349 wmove(view->win, prev_lineno, 0);
1350 wclrtoeol(view->win);
1351 draw_view_line(view, prev_lineno);
1354 /* Check whether the view needs to be scrolled */
1355 if (view->lineno < view->offset ||
1356 view->lineno >= view->offset + view->height) {
1357 if (steps < 0 && -steps > view->offset) {
1358 steps = -view->offset;
1360 } else if (steps > 0) {
1361 if (view->lineno == view->lines - 1 &&
1362 view->lines > view->height) {
1363 steps = view->lines - view->offset - 1;
1364 if (steps >= view->height)
1365 steps -= view->height - 1;
1369 do_scroll_view(view, steps, redraw);
1373 /* Draw the current line */
1374 draw_view_line(view, view->lineno - view->offset);
1379 redrawwin(view->win);
1380 wrefresh(view->win);
1386 * Incremental updating
1390 end_update(struct view *view)
1394 set_nonblocking_input(FALSE);
1395 if (view->pipe == stdin)
1403 begin_update(struct view *view)
1405 const char *id = view->id;
1411 string_copy(view->cmd, opt_cmd);
1413 /* When running random commands, the view ref could have become
1414 * invalid so clear it. */
1417 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1419 if (!string_format(view->cmd, format, id, id, id, id, id))
1423 /* Special case for the pager view. */
1425 view->pipe = opt_pipe;
1428 view->pipe = popen(view->cmd, "r");
1434 set_nonblocking_input(TRUE);
1439 string_copy(view->vid, id);
1444 for (i = 0; i < view->lines; i++)
1445 if (view->line[i].data)
1446 free(view->line[i].data);
1452 view->start_time = time(NULL);
1457 static struct line *
1458 realloc_lines(struct view *view, size_t line_size)
1460 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1466 view->line_size = line_size;
1471 update_view(struct view *view)
1473 char buffer[BUFSIZ];
1475 /* The number of lines to read. If too low it will cause too much
1476 * redrawing (and possible flickering), if too high responsiveness
1478 unsigned long lines = view->height;
1479 int redraw_from = -1;
1484 /* Only redraw if lines are visible. */
1485 if (view->offset + view->height >= view->lines)
1486 redraw_from = view->lines - view->offset;
1488 if (!realloc_lines(view, view->lines + lines))
1491 while ((line = fgets(buffer, sizeof(buffer), view->pipe))) {
1492 int linelen = strlen(line);
1495 line[linelen - 1] = 0;
1497 if (!view->ops->read(view, line))
1507 lines = view->lines;
1508 for (digits = 0; lines; digits++)
1511 /* Keep the displayed view in sync with line number scaling. */
1512 if (digits != view->digits) {
1513 view->digits = digits;
1518 if (redraw_from >= 0) {
1519 /* If this is an incremental update, redraw the previous line
1520 * since for commits some members could have changed when
1521 * loading the main view. */
1522 if (redraw_from > 0)
1525 /* Incrementally draw avoids flickering. */
1526 redraw_view_from(view, redraw_from);
1529 /* Update the title _after_ the redraw so that if the redraw picks up a
1530 * commit reference in view->ref it'll be available here. */
1531 update_view_title(view);
1533 if (ferror(view->pipe)) {
1534 report("Failed to read: %s", strerror(errno));
1537 } else if (feof(view->pipe)) {
1545 report("Allocation failure");
1557 static void open_help_view(struct view *view)
1560 int lines = ARRAY_SIZE(req_info) + 2;
1563 if (view->lines > 0)
1566 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1567 if (!req_info[i].request)
1570 view->line = calloc(lines, sizeof(*view->line));
1572 report("Allocation failure");
1576 view->ops->read(view, "Quick reference for tig keybindings:");
1578 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1581 if (!req_info[i].request) {
1582 view->ops->read(view, "");
1583 view->ops->read(view, req_info[i].help);
1587 key = get_key(req_info[i].request);
1588 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1591 view->ops->read(view, buf);
1596 OPEN_DEFAULT = 0, /* Use default view switching. */
1597 OPEN_SPLIT = 1, /* Split current view. */
1598 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1599 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1603 open_view(struct view *prev, enum request request, enum open_flags flags)
1605 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1606 bool split = !!(flags & OPEN_SPLIT);
1607 bool reload = !!(flags & OPEN_RELOAD);
1608 struct view *view = VIEW(request);
1609 int nviews = displayed_views();
1610 struct view *base_view = display[0];
1612 if (view == prev && nviews == 1 && !reload) {
1613 report("Already in %s view", view->name);
1617 if (view == VIEW(REQ_VIEW_HELP)) {
1618 open_help_view(view);
1620 } else if ((reload || strcmp(view->vid, view->id)) &&
1621 !begin_update(view)) {
1622 report("Failed to load %s view", view->name);
1631 /* Maximize the current view. */
1632 memset(display, 0, sizeof(display));
1634 display[current_view] = view;
1637 /* Resize the view when switching between split- and full-screen,
1638 * or when switching between two different full-screen views. */
1639 if (nviews != displayed_views() ||
1640 (nviews == 1 && base_view != display[0]))
1643 if (split && prev->lineno - prev->offset >= prev->height) {
1644 /* Take the title line into account. */
1645 int lines = prev->lineno - prev->offset - prev->height + 1;
1647 /* Scroll the view that was split if the current line is
1648 * outside the new limited view. */
1649 do_scroll_view(prev, lines, TRUE);
1652 if (prev && view != prev) {
1653 if (split && !backgrounded) {
1654 /* "Blur" the previous view. */
1655 update_view_title(prev);
1658 view->parent = prev;
1661 if (view->pipe && view->lines == 0) {
1662 /* Clear the old view and let the incremental updating refill
1671 /* If the view is backgrounded the above calls to report()
1672 * won't redraw the view title. */
1674 update_view_title(view);
1679 * User request switch noodle
1683 view_driver(struct view *view, enum request request)
1690 case REQ_MOVE_PAGE_UP:
1691 case REQ_MOVE_PAGE_DOWN:
1692 case REQ_MOVE_FIRST_LINE:
1693 case REQ_MOVE_LAST_LINE:
1694 move_view(view, request, TRUE);
1697 case REQ_SCROLL_LINE_DOWN:
1698 case REQ_SCROLL_LINE_UP:
1699 case REQ_SCROLL_PAGE_DOWN:
1700 case REQ_SCROLL_PAGE_UP:
1701 scroll_view(view, request);
1708 case REQ_VIEW_PAGER:
1709 open_view(view, request, OPEN_DEFAULT);
1714 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
1716 if (view == VIEW(REQ_VIEW_DIFF) &&
1717 view->parent == VIEW(REQ_VIEW_MAIN)) {
1718 bool redraw = display[1] == view;
1720 view = view->parent;
1721 move_view(view, request, redraw);
1723 update_view_title(view);
1725 move_view(view, request, TRUE);
1732 report("Nothing to enter");
1735 return view->ops->enter(view, &view->line[view->lineno]);
1739 int nviews = displayed_views();
1740 int next_view = (current_view + 1) % nviews;
1742 if (next_view == current_view) {
1743 report("Only one view is displayed");
1747 current_view = next_view;
1748 /* Blur out the title of the previous view. */
1749 update_view_title(view);
1753 case REQ_TOGGLE_LINENO:
1754 opt_line_number = !opt_line_number;
1758 case REQ_TOGGLE_REV_GRAPH:
1759 opt_rev_graph = !opt_rev_graph;
1764 /* Always reload^Wrerun commands from the prompt. */
1765 open_view(view, opt_request, OPEN_RELOAD);
1768 case REQ_STOP_LOADING:
1769 for (i = 0; i < ARRAY_SIZE(views); i++) {
1772 report("Stopped loading the %s view", view->name),
1777 case REQ_SHOW_VERSION:
1778 report("%s (built %s)", VERSION, __DATE__);
1781 case REQ_SCREEN_RESIZE:
1784 case REQ_SCREEN_REDRAW:
1788 case REQ_SCREEN_UPDATE:
1792 case REQ_VIEW_CLOSE:
1793 /* XXX: Mark closed views by letting view->parent point to the
1794 * view itself. Parents to closed view should never be
1797 view->parent->parent != view->parent) {
1798 memset(display, 0, sizeof(display));
1800 display[current_view] = view->parent;
1801 view->parent = view;
1811 /* An unknown key will show most commonly used commands. */
1812 report("Unknown key, press 'h' for help");
1825 pager_draw(struct view *view, struct line *line, unsigned int lineno)
1827 char *text = line->data;
1828 enum line_type type = line->type;
1829 int textlen = strlen(text);
1832 wmove(view->win, lineno, 0);
1834 if (view->offset + lineno == view->lineno) {
1835 if (type == LINE_COMMIT) {
1836 string_copy(view->ref, text + 7);
1837 string_copy(ref_commit, view->ref);
1841 wchgat(view->win, -1, 0, type, NULL);
1844 attr = get_line_attr(type);
1845 wattrset(view->win, attr);
1847 if (opt_line_number || opt_tab_size < TABSIZE) {
1848 static char spaces[] = " ";
1849 int col_offset = 0, col = 0;
1851 if (opt_line_number) {
1852 unsigned long real_lineno = view->offset + lineno + 1;
1854 if (real_lineno == 1 ||
1855 (real_lineno % opt_num_interval) == 0) {
1856 wprintw(view->win, "%.*d", view->digits, real_lineno);
1859 waddnstr(view->win, spaces,
1860 MIN(view->digits, STRING_SIZE(spaces)));
1862 waddstr(view->win, ": ");
1863 col_offset = view->digits + 2;
1866 while (text && col_offset + col < view->width) {
1867 int cols_max = view->width - col_offset - col;
1871 if (*text == '\t') {
1873 assert(sizeof(spaces) > TABSIZE);
1875 cols = opt_tab_size - (col % opt_tab_size);
1878 text = strchr(text, '\t');
1879 cols = line ? text - pos : strlen(pos);
1882 waddnstr(view->win, pos, MIN(cols, cols_max));
1887 int col = 0, pos = 0;
1889 for (; pos < textlen && col < view->width; pos++, col++)
1890 if (text[pos] == '\t')
1891 col += TABSIZE - (col % TABSIZE) - 1;
1893 waddnstr(view->win, text, pos);
1900 add_pager_refs(struct view *view, struct line *line)
1903 char *data = line->data;
1905 int bufpos = 0, refpos = 0;
1906 const char *sep = "Refs: ";
1908 assert(line->type == LINE_COMMIT);
1910 refs = get_refs(data + STRING_SIZE("commit "));
1915 struct ref *ref = refs[refpos];
1916 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
1918 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
1921 } while (refs[refpos++]->next);
1923 if (!realloc_lines(view, view->line_size + 1))
1926 line = &view->line[view->lines];
1927 line->data = strdup(buf);
1931 line->type = LINE_PP_REFS;
1936 pager_read(struct view *view, char *data)
1938 struct line *line = &view->line[view->lines];
1940 line->data = strdup(data);
1944 line->type = get_line_type(line->data);
1947 if (line->type == LINE_COMMIT &&
1948 (view == VIEW(REQ_VIEW_DIFF) ||
1949 view == VIEW(REQ_VIEW_LOG)))
1950 add_pager_refs(view, line);
1956 pager_enter(struct view *view, struct line *line)
1960 if (line->type == LINE_COMMIT &&
1961 (view == VIEW(REQ_VIEW_LOG) ||
1962 view == VIEW(REQ_VIEW_PAGER))) {
1963 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
1967 /* Always scroll the view even if it was split. That way
1968 * you can use Enter to scroll through the log view and
1969 * split open each commit diff. */
1970 scroll_view(view, REQ_SCROLL_LINE_DOWN);
1972 /* FIXME: A minor workaround. Scrolling the view will call report("")
1973 * but if we are scrolling a non-current view this won't properly
1974 * update the view title. */
1976 update_view_title(view);
1981 static struct view_ops pager_ops = {
1994 char id[41]; /* SHA1 ID. */
1995 char title[75]; /* First line of the commit message. */
1996 char author[75]; /* Author of the commit. */
1997 struct tm time; /* Date from the author ident. */
1998 struct ref **refs; /* Repository references. */
1999 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2000 size_t graph_size; /* The width of the graph array. */
2004 main_draw(struct view *view, struct line *line, unsigned int lineno)
2006 char buf[DATE_COLS + 1];
2007 struct commit *commit = line->data;
2008 enum line_type type;
2014 if (!*commit->author)
2017 wmove(view->win, lineno, col);
2019 if (view->offset + lineno == view->lineno) {
2020 string_copy(view->ref, commit->id);
2021 string_copy(ref_commit, view->ref);
2023 wattrset(view->win, get_line_attr(type));
2024 wchgat(view->win, -1, 0, type, NULL);
2027 type = LINE_MAIN_COMMIT;
2028 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2031 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2032 waddnstr(view->win, buf, timelen);
2033 waddstr(view->win, " ");
2036 wmove(view->win, lineno, col);
2037 if (type != LINE_CURSOR)
2038 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2041 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2043 authorlen = strlen(commit->author);
2044 if (authorlen > AUTHOR_COLS - 2) {
2045 authorlen = AUTHOR_COLS - 2;
2051 waddnstr(view->win, commit->author, authorlen);
2052 if (type != LINE_CURSOR)
2053 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2054 waddch(view->win, '~');
2056 waddstr(view->win, commit->author);
2060 if (type != LINE_CURSOR)
2061 wattrset(view->win, A_NORMAL);
2063 if (opt_rev_graph && commit->graph_size) {
2066 wmove(view->win, lineno, col);
2067 /* Using waddch() instead of waddnstr() ensures that
2068 * they'll be rendered correctly for the cursor line. */
2069 for (i = 0; i < commit->graph_size; i++)
2070 waddch(view->win, commit->graph[i]);
2072 col += commit->graph_size + 1;
2075 wmove(view->win, lineno, col);
2081 if (type == LINE_CURSOR)
2083 else if (commit->refs[i]->tag)
2084 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2086 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2087 waddstr(view->win, "[");
2088 waddstr(view->win, commit->refs[i]->name);
2089 waddstr(view->win, "]");
2090 if (type != LINE_CURSOR)
2091 wattrset(view->win, A_NORMAL);
2092 waddstr(view->win, " ");
2093 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2094 } while (commit->refs[i++]->next);
2097 if (type != LINE_CURSOR)
2098 wattrset(view->win, get_line_attr(type));
2101 int titlelen = strlen(commit->title);
2103 if (col + titlelen > view->width)
2104 titlelen = view->width - col;
2106 waddnstr(view->win, commit->title, titlelen);
2112 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2114 main_read(struct view *view, char *line)
2116 enum line_type type = get_line_type(line);
2117 struct commit *commit = view->lines
2118 ? view->line[view->lines - 1].data : NULL;
2122 commit = calloc(1, sizeof(struct commit));
2126 line += STRING_SIZE("commit ");
2128 view->line[view->lines++].data = commit;
2129 string_copy(commit->id, line);
2130 commit->refs = get_refs(commit->id);
2131 commit->graph[commit->graph_size++] = ACS_LTEE;
2136 char *ident = line + STRING_SIZE("author ");
2137 char *end = strchr(ident, '<');
2143 for (; end > ident && isspace(end[-1]); end--) ;
2147 string_copy(commit->author, ident);
2149 /* Parse epoch and timezone */
2151 char *secs = strchr(end + 1, '>');
2155 if (!secs || secs[1] != ' ')
2159 time = (time_t) atol(secs);
2160 zone = strchr(secs, ' ');
2161 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2165 tz = ('0' - zone[1]) * 60 * 60 * 10;
2166 tz += ('0' - zone[2]) * 60 * 60;
2167 tz += ('0' - zone[3]) * 60;
2168 tz += ('0' - zone[4]) * 60;
2175 gmtime_r(&time, &commit->time);
2183 /* Fill in the commit title if it has not already been set. */
2184 if (commit->title[0])
2187 /* Require titles to start with a non-space character at the
2188 * offset used by git log. */
2189 /* FIXME: More gracefull handling of titles; append "..." to
2190 * shortened titles, etc. */
2191 if (strncmp(line, " ", 4) ||
2195 string_copy(commit->title, line + 4);
2202 main_enter(struct view *view, struct line *line)
2204 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2206 open_view(view, REQ_VIEW_DIFF, flags);
2210 static struct view_ops main_ops = {
2219 * Unicode / UTF-8 handling
2221 * NOTE: Much of the following code for dealing with unicode is derived from
2222 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2223 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2226 /* I've (over)annotated a lot of code snippets because I am not entirely
2227 * confident that the approach taken by this small UTF-8 interface is correct.
2231 unicode_width(unsigned long c)
2234 (c <= 0x115f /* Hangul Jamo */
2237 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2239 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2240 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2241 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2242 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2243 || (c >= 0xffe0 && c <= 0xffe6)
2244 || (c >= 0x20000 && c <= 0x2fffd)
2245 || (c >= 0x30000 && c <= 0x3fffd)))
2251 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2252 * Illegal bytes are set one. */
2253 static const unsigned char utf8_bytes[256] = {
2254 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2255 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2256 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2257 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2258 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2259 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2260 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,
2261 3,3,3,3,3,3,3,3, 3,3,3,3,3,3,3,3, 4,4,4,4,4,4,4,4, 5,5,5,5,6,6,1,1,
2264 /* Decode UTF-8 multi-byte representation into a unicode character. */
2265 static inline unsigned long
2266 utf8_to_unicode(const char *string, size_t length)
2268 unsigned long unicode;
2272 unicode = string[0];
2275 unicode = (string[0] & 0x1f) << 6;
2276 unicode += (string[1] & 0x3f);
2279 unicode = (string[0] & 0x0f) << 12;
2280 unicode += ((string[1] & 0x3f) << 6);
2281 unicode += (string[2] & 0x3f);
2284 unicode = (string[0] & 0x0f) << 18;
2285 unicode += ((string[1] & 0x3f) << 12);
2286 unicode += ((string[2] & 0x3f) << 6);
2287 unicode += (string[3] & 0x3f);
2290 unicode = (string[0] & 0x0f) << 24;
2291 unicode += ((string[1] & 0x3f) << 18);
2292 unicode += ((string[2] & 0x3f) << 12);
2293 unicode += ((string[3] & 0x3f) << 6);
2294 unicode += (string[4] & 0x3f);
2297 unicode = (string[0] & 0x01) << 30;
2298 unicode += ((string[1] & 0x3f) << 24);
2299 unicode += ((string[2] & 0x3f) << 18);
2300 unicode += ((string[3] & 0x3f) << 12);
2301 unicode += ((string[4] & 0x3f) << 6);
2302 unicode += (string[5] & 0x3f);
2305 die("Invalid unicode length");
2308 /* Invalid characters could return the special 0xfffd value but NUL
2309 * should be just as good. */
2310 return unicode > 0xffff ? 0 : unicode;
2313 /* Calculates how much of string can be shown within the given maximum width
2314 * and sets trimmed parameter to non-zero value if all of string could not be
2317 * Additionally, adds to coloffset how many many columns to move to align with
2318 * the expected position. Takes into account how multi-byte and double-width
2319 * characters will effect the cursor position.
2321 * Returns the number of bytes to output from string to satisfy max_width. */
2323 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
2325 const char *start = string;
2326 const char *end = strchr(string, '\0');
2332 while (string < end) {
2333 int c = *(unsigned char *) string;
2334 unsigned char bytes = utf8_bytes[c];
2336 unsigned long unicode;
2338 if (string + bytes > end)
2341 /* Change representation to figure out whether
2342 * it is a single- or double-width character. */
2344 unicode = utf8_to_unicode(string, bytes);
2345 /* FIXME: Graceful handling of invalid unicode character. */
2349 ucwidth = unicode_width(unicode);
2351 if (width > max_width) {
2356 /* The column offset collects the differences between the
2357 * number of bytes encoding a character and the number of
2358 * columns will be used for rendering said character.
2360 * So if some character A is encoded in 2 bytes, but will be
2361 * represented on the screen using only 1 byte this will and up
2362 * adding 1 to the multi-byte column offset.
2364 * Assumes that no double-width character can be encoding in
2365 * less than two bytes. */
2366 if (bytes > ucwidth)
2367 mbwidth += bytes - ucwidth;
2372 *coloffset += mbwidth;
2374 return string - start;
2382 /* Whether or not the curses interface has been initialized. */
2383 static bool cursed = FALSE;
2385 /* The status window is used for polling keystrokes. */
2386 static WINDOW *status_win;
2388 /* Update status and title window. */
2390 report(const char *msg, ...)
2392 static bool empty = TRUE;
2393 struct view *view = display[current_view];
2395 if (!empty || *msg) {
2398 va_start(args, msg);
2401 wmove(status_win, 0, 0);
2403 vwprintw(status_win, msg, args);
2408 wrefresh(status_win);
2413 update_view_title(view);
2414 update_display_cursor();
2417 /* Controls when nodelay should be in effect when polling user input. */
2419 set_nonblocking_input(bool loading)
2421 static unsigned int loading_views;
2423 if ((loading == FALSE && loading_views-- == 1) ||
2424 (loading == TRUE && loading_views++ == 0))
2425 nodelay(status_win, loading);
2433 /* Initialize the curses library */
2434 if (isatty(STDIN_FILENO)) {
2435 cursed = !!initscr();
2437 /* Leave stdin and stdout alone when acting as a pager. */
2438 FILE *io = fopen("/dev/tty", "r+");
2440 cursed = !!newterm(NULL, io, io);
2444 die("Failed to initialize curses");
2446 nonl(); /* Tell curses not to do NL->CR/NL on output */
2447 cbreak(); /* Take input chars one at a time, no wait for \n */
2448 noecho(); /* Don't echo input */
2449 leaveok(stdscr, TRUE);
2454 getmaxyx(stdscr, y, x);
2455 status_win = newwin(1, 0, y - 1, 0);
2457 die("Failed to create status window");
2459 /* Enable keyboard mapping */
2460 keypad(status_win, TRUE);
2461 wbkgdset(status_win, get_line_attr(LINE_STATUS));
2466 * Repository references
2469 static struct ref *refs;
2470 static size_t refs_size;
2472 /* Id <-> ref store */
2473 static struct ref ***id_refs;
2474 static size_t id_refs_size;
2476 static struct ref **
2479 struct ref ***tmp_id_refs;
2480 struct ref **ref_list = NULL;
2481 size_t ref_list_size = 0;
2484 for (i = 0; i < id_refs_size; i++)
2485 if (!strcmp(id, id_refs[i][0]->id))
2488 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
2492 id_refs = tmp_id_refs;
2494 for (i = 0; i < refs_size; i++) {
2497 if (strcmp(id, refs[i].id))
2500 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
2508 if (ref_list_size > 0)
2509 ref_list[ref_list_size - 1]->next = 1;
2510 ref_list[ref_list_size] = &refs[i];
2512 /* XXX: The properties of the commit chains ensures that we can
2513 * safely modify the shared ref. The repo references will
2514 * always be similar for the same id. */
2515 ref_list[ref_list_size]->next = 0;
2520 id_refs[id_refs_size++] = ref_list;
2526 read_ref(char *id, int idlen, char *name, int namelen)
2531 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
2532 /* Commits referenced by tags has "^{}" appended. */
2533 if (name[namelen - 1] != '}')
2536 while (namelen > 0 && name[namelen] != '^')
2540 namelen -= STRING_SIZE("refs/tags/");
2541 name += STRING_SIZE("refs/tags/");
2543 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
2544 namelen -= STRING_SIZE("refs/heads/");
2545 name += STRING_SIZE("refs/heads/");
2547 } else if (!strcmp(name, "HEAD")) {
2551 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
2555 ref = &refs[refs_size++];
2556 ref->name = malloc(namelen + 1);
2560 strncpy(ref->name, name, namelen);
2561 ref->name[namelen] = 0;
2563 string_copy(ref->id, id);
2571 const char *cmd_env = getenv("TIG_LS_REMOTE");
2572 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
2574 return read_properties(popen(cmd, "r"), "\t", read_ref);
2578 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
2580 if (!strcmp(name, "i18n.commitencoding"))
2581 string_copy(opt_encoding, value);
2587 load_repo_config(void)
2589 return read_properties(popen("git repo-config --list", "r"),
2590 "=", read_repo_config_option);
2594 read_properties(FILE *pipe, const char *separators,
2595 int (*read_property)(char *, int, char *, int))
2597 char buffer[BUFSIZ];
2604 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
2609 name = chomp_string(name);
2610 namelen = strcspn(name, separators);
2612 if (name[namelen]) {
2614 value = chomp_string(name + namelen + 1);
2615 valuelen = strlen(value);
2622 state = read_property(name, namelen, value, valuelen);
2625 if (state != ERR && ferror(pipe))
2638 static void __NORETURN
2641 /* XXX: Restore tty modes and let the OS cleanup the rest! */
2647 static void __NORETURN
2648 die(const char *err, ...)
2654 va_start(args, err);
2655 fputs("tig: ", stderr);
2656 vfprintf(stderr, err, args);
2657 fputs("\n", stderr);
2664 main(int argc, char *argv[])
2667 enum request request;
2670 signal(SIGINT, quit);
2672 if (load_options() == ERR)
2673 die("Failed to load user config.");
2675 /* Load the repo config file so options can be overwritten from
2676 * the command line. */
2677 if (load_repo_config() == ERR)
2678 die("Failed to load repo config.");
2680 if (!parse_options(argc, argv))
2683 if (load_refs() == ERR)
2684 die("Failed to load refs.");
2686 /* Require a git repository unless when running in pager mode. */
2687 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
2688 die("Not a git repository");
2690 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2691 view->cmd_env = getenv(view->cmd_env);
2693 request = opt_request;
2697 while (view_driver(display[current_view], request)) {
2701 foreach_view (view, i)
2704 /* Refresh, accept single keystroke of input */
2705 key = wgetch(status_win);
2706 request = get_keybinding(key);
2708 /* Some low-level request handling. This keeps access to
2709 * status_win restricted. */
2713 /* Temporarily switch to line-oriented and echoed
2718 if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) {
2719 memcpy(opt_cmd, "git ", 4);
2720 opt_request = REQ_VIEW_PAGER;
2722 report("Prompt interrupted by loading view, "
2723 "press 'z' to stop loading views");
2724 request = REQ_SCREEN_UPDATE;
2731 case REQ_SCREEN_RESIZE:
2735 getmaxyx(stdscr, height, width);
2737 /* Resize the status view and let the view driver take
2738 * care of resizing the displayed views. */
2739 wresize(status_win, 1, width);
2740 mvwin(status_win, height - 1, 0);
2741 wrefresh(status_win);