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);
46 static void load_help_page(void);
48 #define ABS(x) ((x) >= 0 ? (x) : -(x))
49 #define MIN(x, y) ((x) < (y) ? (x) : (y))
51 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
52 #define STRING_SIZE(x) (sizeof(x) - 1)
54 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
55 #define SIZEOF_CMD 1024 /* Size of command buffer. */
56 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
58 /* This color name can be used to refer to the default term colors. */
59 #define COLOR_DEFAULT (-1)
61 /* The format and size of the date column in the main view. */
62 #define DATE_FORMAT "%Y-%m-%d %H:%M"
63 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
65 #define AUTHOR_COLS 20
67 /* The default interval between line numbers. */
68 #define NUMBER_INTERVAL 1
72 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
74 #define TIG_LS_REMOTE \
75 "git ls-remote . 2>/dev/null"
77 #define TIG_DIFF_CMD \
78 "git show --patch-with-stat --find-copies-harder -B -C %s"
81 "git log --cc --stat -n100 %s"
83 #define TIG_MAIN_CMD \
84 "git log --topo-order --stat --pretty=raw %s"
86 /* XXX: Needs to be defined to the empty string. */
87 #define TIG_HELP_CMD ""
88 #define TIG_PAGER_CMD ""
90 /* Some ascii-shorthands fitted into the ncurses namespace. */
92 #define KEY_RETURN '\r'
97 char *name; /* Ref name; tag or head names are shortened. */
98 char id[41]; /* Commit SHA1 ID */
99 unsigned int tag:1; /* Is it a tag? */
100 unsigned int next:1; /* For ref lists: are there more refs? */
103 static struct ref **get_refs(char *id);
112 set_from_int_map(struct int_map *map, size_t map_size,
113 int *value, const char *name, int namelen)
118 for (i = 0; i < map_size; i++)
119 if (namelen == map[i].namelen &&
120 !strncasecmp(name, map[i].name, namelen)) {
121 *value = map[i].value;
134 string_ncopy(char *dst, const char *src, int dstlen)
136 strncpy(dst, src, dstlen - 1);
141 /* Shorthand for safely copying into a fixed buffer. */
142 #define string_copy(dst, src) \
143 string_ncopy(dst, src, sizeof(dst))
146 chomp_string(char *name)
150 while (isspace(*name))
153 namelen = strlen(name) - 1;
154 while (namelen > 0 && isspace(name[namelen]))
161 string_nformat(char *buf, size_t bufsize, int *bufpos, const char *fmt, ...)
164 int pos = bufpos ? *bufpos : 0;
167 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
173 return pos >= bufsize ? FALSE : TRUE;
176 #define string_format(buf, fmt, args...) \
177 string_nformat(buf, sizeof(buf), NULL, fmt, args)
179 #define string_format_from(buf, from, fmt, args...) \
180 string_nformat(buf, sizeof(buf), from, fmt, args)
184 * NOTE: The following is a slightly modified copy of the git project's shell
185 * quoting routines found in the quote.c file.
187 * Help to copy the thing properly quoted for the shell safety. any single
188 * quote is replaced with '\'', any exclamation point is replaced with '\!',
189 * and the whole thing is enclosed in a
192 * original sq_quote result
193 * name ==> name ==> 'name'
194 * a b ==> a b ==> 'a b'
195 * a'b ==> a'\''b ==> 'a'\''b'
196 * a!b ==> a'\!'b ==> 'a'\!'b'
200 sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src)
204 #define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0)
207 while ((c = *src++)) {
208 if (c == '\'' || c == '!') {
228 /* XXX: Keep the view request first and in sync with views[]. */ \
229 REQ_GROUP("View switching") \
230 REQ_(VIEW_MAIN, "Show main view"), \
231 REQ_(VIEW_DIFF, "Show diff view"), \
232 REQ_(VIEW_LOG, "Show log view"), \
233 REQ_(VIEW_HELP, "Show help page"), \
234 REQ_(VIEW_PAGER, "Show pager view"), \
236 REQ_GROUP("View manipulation") \
237 REQ_(ENTER, "Enter current line and scroll"), \
238 REQ_(NEXT, "Move to next"), \
239 REQ_(PREVIOUS, "Move to previous"), \
240 REQ_(VIEW_NEXT, "Move focus to next view"), \
241 REQ_(VIEW_CLOSE, "Close the current view"), \
242 REQ_(QUIT, "Close all views and quit"), \
244 REQ_GROUP("Cursor navigation") \
245 REQ_(MOVE_UP, "Move cursor one line up"), \
246 REQ_(MOVE_DOWN, "Move cursor one line down"), \
247 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
248 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
249 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
250 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
252 REQ_GROUP("Scrolling") \
253 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
254 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
255 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
256 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
259 REQ_(PROMPT, "Bring up the prompt"), \
260 REQ_(SCREEN_UPDATE, "Update the screen"), \
261 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
262 REQ_(SCREEN_RESIZE, "Resize the screen"), \
263 REQ_(SHOW_VERSION, "Show version information"), \
264 REQ_(STOP_LOADING, "Stop all loading views"), \
265 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
266 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"),
269 /* User action requests. */
271 #define REQ_GROUP(help)
272 #define REQ_(req, help) REQ_##req
274 /* Offset all requests to avoid conflicts with ncurses getch values. */
275 REQ_OFFSET = KEY_MAX + 1,
282 struct request_info {
283 enum request request;
287 static struct request_info req_info[] = {
288 #define REQ_GROUP(help) { 0, (help) },
289 #define REQ_(req, help) { REQ_##req, (help) }
299 static const char usage[] =
300 VERSION " (" __DATE__ ")\n"
302 "Usage: tig [options]\n"
303 " or: tig [options] [--] [git log options]\n"
304 " or: tig [options] log [git log options]\n"
305 " or: tig [options] diff [git diff options]\n"
306 " or: tig [options] show [git show options]\n"
307 " or: tig [options] < [git command output]\n"
310 " -l Start up in log view\n"
311 " -d Start up in diff view\n"
312 " -n[I], --line-number[=I] Show line numbers with given interval\n"
313 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
314 " -- Mark end of tig options\n"
315 " -v, --version Show version and exit\n"
316 " -h, --help Show help message and exit\n";
318 /* Option and state variables. */
319 static bool opt_line_number = FALSE;
320 static bool opt_rev_graph = TRUE;
321 static int opt_num_interval = NUMBER_INTERVAL;
322 static int opt_tab_size = TABSIZE;
323 static enum request opt_request = REQ_VIEW_MAIN;
324 static char opt_cmd[SIZEOF_CMD] = "";
325 static char opt_encoding[20] = "";
326 static bool opt_utf8 = TRUE;
327 static FILE *opt_pipe = NULL;
335 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
345 int namelen = strlen(name);
349 if (strncmp(opt, name, namelen))
352 if (opt[namelen] == '=')
353 value = opt + namelen + 1;
356 if (!short_name || opt[1] != short_name)
361 va_start(args, type);
362 if (type == OPT_INT) {
363 number = va_arg(args, int *);
365 *number = atoi(value);
372 /* Returns the index of log or diff command or -1 to exit. */
374 parse_options(int argc, char *argv[])
378 for (i = 1; i < argc; i++) {
381 if (!strcmp(opt, "-l")) {
382 opt_request = REQ_VIEW_LOG;
386 if (!strcmp(opt, "-d")) {
387 opt_request = REQ_VIEW_DIFF;
391 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
392 opt_line_number = TRUE;
396 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
397 opt_tab_size = MIN(opt_tab_size, TABSIZE);
401 if (check_option(opt, 'v', "version", OPT_NONE)) {
402 printf("tig version %s\n", VERSION);
406 if (check_option(opt, 'h', "help", OPT_NONE)) {
411 if (!strcmp(opt, "--")) {
416 if (!strcmp(opt, "log") ||
417 !strcmp(opt, "diff") ||
418 !strcmp(opt, "show")) {
419 opt_request = opt[0] == 'l'
420 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
424 if (opt[0] && opt[0] != '-')
427 die("unknown option '%s'\n\n%s", opt, usage);
430 if (!isatty(STDIN_FILENO)) {
431 opt_request = REQ_VIEW_PAGER;
434 } else if (i < argc) {
437 if (opt_request == REQ_VIEW_MAIN)
438 /* XXX: This is vulnerable to the user overriding
439 * options required for the main view parser. */
440 string_copy(opt_cmd, "git log --stat --pretty=raw");
442 string_copy(opt_cmd, "git");
443 buf_size = strlen(opt_cmd);
445 while (buf_size < sizeof(opt_cmd) && i < argc) {
446 opt_cmd[buf_size++] = ' ';
447 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
450 if (buf_size >= sizeof(opt_cmd))
451 die("command too long");
453 opt_cmd[buf_size] = 0;
457 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
465 * Line-oriented content detection.
469 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
470 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
471 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
472 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
473 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
474 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
475 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
476 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
477 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
478 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
479 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
480 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
481 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
482 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
483 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
484 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
485 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
486 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
487 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
488 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
489 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
490 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
491 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
492 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
493 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
494 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
495 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
496 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
497 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
498 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
499 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
500 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
501 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
502 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
503 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
504 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
505 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
506 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
509 #define LINE(type, line, fg, bg, attr) \
516 const char *name; /* Option name. */
517 int namelen; /* Size of option name. */
518 const char *line; /* The start of line to match. */
519 int linelen; /* Size of string to match. */
520 int fg, bg, attr; /* Color and text attributes for the lines. */
523 static struct line_info line_info[] = {
524 #define LINE(type, line, fg, bg, attr) \
525 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
530 static enum line_type
531 get_line_type(char *line)
533 int linelen = strlen(line);
536 for (type = 0; type < ARRAY_SIZE(line_info); type++)
537 /* Case insensitive search matches Signed-off-by lines better. */
538 if (linelen >= line_info[type].linelen &&
539 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
546 get_line_attr(enum line_type type)
548 assert(type < ARRAY_SIZE(line_info));
549 return COLOR_PAIR(type) | line_info[type].attr;
552 static struct line_info *
553 get_line_info(char *name, int namelen)
558 /* Diff-Header -> DIFF_HEADER */
559 for (i = 0; i < namelen; i++) {
562 else if (name[i] == '.')
566 for (type = 0; type < ARRAY_SIZE(line_info); type++)
567 if (namelen == line_info[type].namelen &&
568 !strncasecmp(line_info[type].name, name, namelen))
569 return &line_info[type];
577 int default_bg = COLOR_BLACK;
578 int default_fg = COLOR_WHITE;
583 if (use_default_colors() != ERR) {
588 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
589 struct line_info *info = &line_info[type];
590 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
591 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
593 init_pair(type, fg, bg);
599 void *data; /* User data */
612 static struct keymap keymap[] = {
614 { 'm', REQ_VIEW_MAIN },
615 { 'd', REQ_VIEW_DIFF },
616 { 'l', REQ_VIEW_LOG },
617 { 'p', REQ_VIEW_PAGER },
618 { 'h', REQ_VIEW_HELP },
619 { '?', REQ_VIEW_HELP },
621 /* View manipulation */
622 { 'q', REQ_VIEW_CLOSE },
623 { KEY_TAB, REQ_VIEW_NEXT },
624 { KEY_RETURN, REQ_ENTER },
625 { KEY_UP, REQ_PREVIOUS },
626 { KEY_DOWN, REQ_NEXT },
628 /* Cursor navigation */
629 { 'k', REQ_MOVE_UP },
630 { 'j', REQ_MOVE_DOWN },
631 { KEY_HOME, REQ_MOVE_FIRST_LINE },
632 { KEY_END, REQ_MOVE_LAST_LINE },
633 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
634 { ' ', REQ_MOVE_PAGE_DOWN },
635 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
636 { 'b', REQ_MOVE_PAGE_UP },
637 { '-', REQ_MOVE_PAGE_UP },
640 { KEY_IC, REQ_SCROLL_LINE_UP },
641 { KEY_DC, REQ_SCROLL_LINE_DOWN },
642 { 'w', REQ_SCROLL_PAGE_UP },
643 { 's', REQ_SCROLL_PAGE_DOWN },
647 { 'z', REQ_STOP_LOADING },
648 { 'v', REQ_SHOW_VERSION },
649 { 'r', REQ_SCREEN_REDRAW },
650 { 'n', REQ_TOGGLE_LINENO },
651 { 'g', REQ_TOGGLE_REV_GRAPH},
654 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
655 { ERR, REQ_SCREEN_UPDATE },
657 /* Use the ncurses SIGWINCH handler. */
658 { KEY_RESIZE, REQ_SCREEN_RESIZE },
666 for (i = 0; i < ARRAY_SIZE(keymap); i++)
667 if (keymap[i].alias == key)
668 return keymap[i].request;
670 return (enum request) key;
678 static struct key key_table[] = {
679 { "Enter", KEY_RETURN },
681 { "Backspace", KEY_BACKSPACE },
683 { "Escape", KEY_ESC },
684 { "Left", KEY_LEFT },
685 { "Right", KEY_RIGHT },
687 { "Down", KEY_DOWN },
688 { "Insert", KEY_IC },
689 { "Delete", KEY_DC },
690 { "Home", KEY_HOME },
692 { "PageUp", KEY_PPAGE },
693 { "PageDown", KEY_NPAGE },
703 { "F10", KEY_F(10) },
704 { "F11", KEY_F(11) },
705 { "F12", KEY_F(12) },
709 get_key(enum request request)
711 static char buf[BUFSIZ];
712 static char key_char[] = "'X'";
719 for (i = 0; i < ARRAY_SIZE(keymap); i++) {
723 if (keymap[i].request != request)
726 for (key = 0; key < ARRAY_SIZE(key_table); key++)
727 if (key_table[key].value == keymap[i].alias)
728 seq = key_table[key].name;
731 keymap[i].alias < 127 &&
732 isprint(keymap[i].alias)) {
733 key_char[1] = (char) keymap[i].alias;
740 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
741 return "Too many keybindings!";
750 * User config file handling.
753 static struct int_map color_map[] = {
754 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
766 #define set_color(color, name) \
767 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
769 static struct int_map attr_map[] = {
770 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
780 #define set_attribute(attr, name) \
781 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
783 static int config_lineno;
784 static bool config_errors;
785 static char *config_msg;
787 /* Wants: object fgcolor bgcolor [attr] */
789 option_color_command(int argc, char *argv[])
791 struct line_info *info;
793 if (argc != 3 && argc != 4) {
794 config_msg = "Wrong number of arguments given to color command";
798 info = get_line_info(argv[0], strlen(argv[0]));
800 config_msg = "Unknown color name";
804 if (set_color(&info->fg, argv[1]) == ERR) {
805 config_msg = "Unknown color";
809 if (set_color(&info->bg, argv[2]) == ERR) {
810 config_msg = "Unknown color";
814 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
815 config_msg = "Unknown attribute";
822 /* Wants: name = value */
824 option_set_command(int argc, char *argv[])
827 config_msg = "Wrong number of arguments given to set command";
831 if (strcmp(argv[1], "=")) {
832 config_msg = "No value assigned";
836 if (!strcmp(argv[0], "show-rev-graph")) {
837 opt_rev_graph = (!strcmp(argv[2], "1") ||
838 !strcmp(argv[2], "true") ||
839 !strcmp(argv[2], "yes"));
843 if (!strcmp(argv[0], "line-number-interval")) {
844 opt_num_interval = atoi(argv[2]);
848 if (!strcmp(argv[0], "tab-size")) {
849 opt_tab_size = atoi(argv[2]);
853 if (!strcmp(argv[0], "encoding")) {
854 string_copy(opt_encoding, argv[2]);
862 set_option(char *opt, char *value)
869 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
870 argv[argc++] = value;
877 while (isspace(*value))
881 if (!strcmp(opt, "color"))
882 return option_color_command(argc, argv);
884 if (!strcmp(opt, "set"))
885 return option_set_command(argc, argv);
891 read_option(char *opt, int optlen, char *value, int valuelen)
894 config_msg = "Internal error";
896 optlen = strcspn(opt, "#;");
898 /* The whole line is a commend or empty. */
901 } else if (opt[optlen] != 0) {
902 /* Part of the option name is a comment, so the value part
903 * should be ignored. */
905 opt[optlen] = value[valuelen] = 0;
907 /* Else look for comment endings in the value. */
908 valuelen = strcspn(value, "#;");
912 if (set_option(opt, value) == ERR) {
913 fprintf(stderr, "Error on line %d, near '%.*s' option: %s\n",
914 config_lineno, optlen, opt, config_msg);
915 config_errors = TRUE;
918 /* Always keep going if errors are encountered. */
925 char *home = getenv("HOME");
930 config_errors = FALSE;
932 if (!home || !string_format(buf, "%s/.tigrc", home))
935 /* It's ok that the file doesn't exist. */
936 file = fopen(buf, "r");
940 if (read_properties(file, " \t", read_option) == ERR ||
941 config_errors == TRUE)
942 fprintf(stderr, "Errors while loading %s.\n", buf);
955 /* The display array of active views and the index of the current view. */
956 static struct view *display[2];
957 static unsigned int current_view;
959 #define foreach_view(view, i) \
960 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
962 #define displayed_views() (display[1] != NULL ? 2 : 1)
964 /* Current head and commit ID */
965 static char ref_commit[SIZEOF_REF] = "HEAD";
966 static char ref_head[SIZEOF_REF] = "HEAD";
969 const char *name; /* View name */
970 const char *cmd_fmt; /* Default command line format */
971 const char *cmd_env; /* Command line set via environment */
972 const char *id; /* Points to either of ref_{head,commit} */
974 struct view_ops *ops; /* View operations */
976 char cmd[SIZEOF_CMD]; /* Command buffer */
977 char ref[SIZEOF_REF]; /* Hovered commit reference */
978 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
980 int height, width; /* The width and height of the main window */
981 WINDOW *win; /* The main window */
982 WINDOW *title; /* The title window living below the main window */
985 unsigned long offset; /* Offset of the window top */
986 unsigned long lineno; /* Current line number */
988 /* If non-NULL, points to the view that opened this view. If this view
989 * is closed tig will switch back to the parent view. */
993 unsigned long lines; /* Total number of lines */
994 struct line *line; /* Line index */
995 unsigned long line_size;/* Total number of allocated lines */
996 unsigned int digits; /* Number of digits in the lines member. */
1004 /* What type of content being displayed. Used in the title bar. */
1006 /* Draw one line; @lineno must be < view->height. */
1007 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1008 /* Read one line; updates view->line. */
1009 bool (*read)(struct view *view, char *data);
1010 /* Depending on view, change display based on current line. */
1011 bool (*enter)(struct view *view, struct line *line);
1014 static struct view_ops pager_ops;
1015 static struct view_ops main_ops;
1017 #define VIEW_STR(name, cmd, env, ref, ops) \
1018 { name, cmd, #env, ref, ops }
1020 #define VIEW_(id, name, ops, ref) \
1021 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops)
1024 static struct view views[] = {
1025 VIEW_(MAIN, "main", &main_ops, ref_head),
1026 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1027 VIEW_(LOG, "log", &pager_ops, ref_head),
1028 VIEW_(HELP, "help", &pager_ops, "static"),
1029 VIEW_(PAGER, "pager", &pager_ops, "static"),
1032 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1036 draw_view_line(struct view *view, unsigned int lineno)
1038 if (view->offset + lineno >= view->lines)
1041 return view->ops->draw(view, &view->line[view->offset + lineno], lineno);
1045 redraw_view_from(struct view *view, int lineno)
1047 assert(0 <= lineno && lineno < view->height);
1049 for (; lineno < view->height; lineno++) {
1050 if (!draw_view_line(view, lineno))
1054 redrawwin(view->win);
1055 wrefresh(view->win);
1059 redraw_view(struct view *view)
1062 redraw_view_from(view, 0);
1067 update_view_title(struct view *view)
1069 if (view == display[current_view])
1070 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1072 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1074 werase(view->title);
1075 wmove(view->title, 0, 0);
1078 wprintw(view->title, "[%s] %s", view->name, view->ref);
1080 wprintw(view->title, "[%s]", view->name);
1082 if (view->lines || view->pipe) {
1083 unsigned int view_lines = view->offset + view->height;
1084 unsigned int lines = view->lines
1085 ? MIN(view_lines, view->lines) * 100 / view->lines
1088 wprintw(view->title, " - %s %d of %d (%d%%)",
1096 time_t secs = time(NULL) - view->start_time;
1098 /* Three git seconds are a long time ... */
1100 wprintw(view->title, " %lds", secs);
1103 wmove(view->title, 0, view->width - 1);
1104 wrefresh(view->title);
1108 resize_display(void)
1111 struct view *base = display[0];
1112 struct view *view = display[1] ? display[1] : display[0];
1114 /* Setup window dimensions */
1116 getmaxyx(stdscr, base->height, base->width);
1118 /* Make room for the status window. */
1122 /* Horizontal split. */
1123 view->width = base->width;
1124 view->height = SCALE_SPLIT_VIEW(base->height);
1125 base->height -= view->height;
1127 /* Make room for the title bar. */
1131 /* Make room for the title bar. */
1136 foreach_view (view, i) {
1138 view->win = newwin(view->height, 0, offset, 0);
1140 die("Failed to create %s view", view->name);
1142 scrollok(view->win, TRUE);
1144 view->title = newwin(1, 0, offset + view->height, 0);
1146 die("Failed to create title window");
1149 wresize(view->win, view->height, view->width);
1150 mvwin(view->win, offset, 0);
1151 mvwin(view->title, offset + view->height, 0);
1154 offset += view->height + 1;
1159 redraw_display(void)
1164 foreach_view (view, i) {
1166 update_view_title(view);
1171 update_display_cursor(void)
1173 struct view *view = display[current_view];
1175 /* Move the cursor to the right-most column of the cursor line.
1177 * XXX: This could turn out to be a bit expensive, but it ensures that
1178 * the cursor does not jump around. */
1180 wmove(view->win, view->lineno - view->offset, view->width - 1);
1181 wrefresh(view->win);
1189 /* Scrolling backend */
1191 do_scroll_view(struct view *view, int lines, bool redraw)
1193 /* The rendering expects the new offset. */
1194 view->offset += lines;
1196 assert(0 <= view->offset && view->offset < view->lines);
1199 /* Redraw the whole screen if scrolling is pointless. */
1200 if (view->height < ABS(lines)) {
1204 int line = lines > 0 ? view->height - lines : 0;
1205 int end = line + ABS(lines);
1207 wscrl(view->win, lines);
1209 for (; line < end; line++) {
1210 if (!draw_view_line(view, line))
1215 /* Move current line into the view. */
1216 if (view->lineno < view->offset) {
1217 view->lineno = view->offset;
1218 draw_view_line(view, 0);
1220 } else if (view->lineno >= view->offset + view->height) {
1221 if (view->lineno == view->offset + view->height) {
1222 /* Clear the hidden line so it doesn't show if the view
1223 * is scrolled up. */
1224 wmove(view->win, view->height, 0);
1225 wclrtoeol(view->win);
1227 view->lineno = view->offset + view->height - 1;
1228 draw_view_line(view, view->lineno - view->offset);
1231 assert(view->offset <= view->lineno && view->lineno < view->lines);
1236 redrawwin(view->win);
1237 wrefresh(view->win);
1241 /* Scroll frontend */
1243 scroll_view(struct view *view, enum request request)
1248 case REQ_SCROLL_PAGE_DOWN:
1249 lines = view->height;
1250 case REQ_SCROLL_LINE_DOWN:
1251 if (view->offset + lines > view->lines)
1252 lines = view->lines - view->offset;
1254 if (lines == 0 || view->offset + view->height >= view->lines) {
1255 report("Cannot scroll beyond the last line");
1260 case REQ_SCROLL_PAGE_UP:
1261 lines = view->height;
1262 case REQ_SCROLL_LINE_UP:
1263 if (lines > view->offset)
1264 lines = view->offset;
1267 report("Cannot scroll beyond the first line");
1275 die("request %d not handled in switch", request);
1278 do_scroll_view(view, lines, TRUE);
1283 move_view(struct view *view, enum request request, bool redraw)
1288 case REQ_MOVE_FIRST_LINE:
1289 steps = -view->lineno;
1292 case REQ_MOVE_LAST_LINE:
1293 steps = view->lines - view->lineno - 1;
1296 case REQ_MOVE_PAGE_UP:
1297 steps = view->height > view->lineno
1298 ? -view->lineno : -view->height;
1301 case REQ_MOVE_PAGE_DOWN:
1302 steps = view->lineno + view->height >= view->lines
1303 ? view->lines - view->lineno - 1 : view->height;
1315 die("request %d not handled in switch", request);
1318 if (steps <= 0 && view->lineno == 0) {
1319 report("Cannot move beyond the first line");
1322 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1323 report("Cannot move beyond the last line");
1327 /* Move the current line */
1328 view->lineno += steps;
1329 assert(0 <= view->lineno && view->lineno < view->lines);
1331 /* Repaint the old "current" line if we be scrolling */
1332 if (ABS(steps) < view->height) {
1333 int prev_lineno = view->lineno - steps - view->offset;
1335 wmove(view->win, prev_lineno, 0);
1336 wclrtoeol(view->win);
1337 draw_view_line(view, prev_lineno);
1340 /* Check whether the view needs to be scrolled */
1341 if (view->lineno < view->offset ||
1342 view->lineno >= view->offset + view->height) {
1343 if (steps < 0 && -steps > view->offset) {
1344 steps = -view->offset;
1346 } else if (steps > 0) {
1347 if (view->lineno == view->lines - 1 &&
1348 view->lines > view->height) {
1349 steps = view->lines - view->offset - 1;
1350 if (steps >= view->height)
1351 steps -= view->height - 1;
1355 do_scroll_view(view, steps, redraw);
1359 /* Draw the current line */
1360 draw_view_line(view, view->lineno - view->offset);
1365 redrawwin(view->win);
1366 wrefresh(view->win);
1372 * Incremental updating
1376 end_update(struct view *view)
1380 set_nonblocking_input(FALSE);
1381 if (view->pipe == stdin)
1389 begin_update(struct view *view)
1391 const char *id = view->id;
1397 string_copy(view->cmd, opt_cmd);
1399 /* When running random commands, the view ref could have become
1400 * invalid so clear it. */
1403 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1405 if (!string_format(view->cmd, format, id, id, id, id, id))
1409 /* Special case for the pager view. */
1411 view->pipe = opt_pipe;
1414 view->pipe = popen(view->cmd, "r");
1420 set_nonblocking_input(TRUE);
1425 string_copy(view->vid, id);
1430 for (i = 0; i < view->lines; i++)
1431 if (view->line[i].data)
1432 free(view->line[i].data);
1438 view->start_time = time(NULL);
1443 static struct line *
1444 realloc_lines(struct view *view, size_t line_size)
1446 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1452 view->line_size = line_size;
1457 update_view(struct view *view)
1459 char buffer[BUFSIZ];
1461 /* The number of lines to read. If too low it will cause too much
1462 * redrawing (and possible flickering), if too high responsiveness
1464 unsigned long lines = view->height;
1465 int redraw_from = -1;
1470 /* Only redraw if lines are visible. */
1471 if (view->offset + view->height >= view->lines)
1472 redraw_from = view->lines - view->offset;
1474 if (!realloc_lines(view, view->lines + lines))
1477 while ((line = fgets(buffer, sizeof(buffer), view->pipe))) {
1478 int linelen = strlen(line);
1481 line[linelen - 1] = 0;
1483 if (!view->ops->read(view, line))
1493 lines = view->lines;
1494 for (digits = 0; lines; digits++)
1497 /* Keep the displayed view in sync with line number scaling. */
1498 if (digits != view->digits) {
1499 view->digits = digits;
1504 if (redraw_from >= 0) {
1505 /* If this is an incremental update, redraw the previous line
1506 * since for commits some members could have changed when
1507 * loading the main view. */
1508 if (redraw_from > 0)
1511 /* Incrementally draw avoids flickering. */
1512 redraw_view_from(view, redraw_from);
1515 /* Update the title _after_ the redraw so that if the redraw picks up a
1516 * commit reference in view->ref it'll be available here. */
1517 update_view_title(view);
1519 if (ferror(view->pipe)) {
1520 report("Failed to read: %s", strerror(errno));
1523 } else if (feof(view->pipe)) {
1531 report("Allocation failure");
1539 OPEN_DEFAULT = 0, /* Use default view switching. */
1540 OPEN_SPLIT = 1, /* Split current view. */
1541 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1542 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1546 open_view(struct view *prev, enum request request, enum open_flags flags)
1548 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1549 bool split = !!(flags & OPEN_SPLIT);
1550 bool reload = !!(flags & OPEN_RELOAD);
1551 struct view *view = VIEW(request);
1552 int nviews = displayed_views();
1553 struct view *base_view = display[0];
1555 if (view == prev && nviews == 1 && !reload) {
1556 report("Already in %s view", view->name);
1560 if (view == VIEW(REQ_VIEW_HELP)) {
1563 } else if ((reload || strcmp(view->vid, view->id)) &&
1564 !begin_update(view)) {
1565 report("Failed to load %s view", view->name);
1574 /* Maximize the current view. */
1575 memset(display, 0, sizeof(display));
1577 display[current_view] = view;
1580 /* Resize the view when switching between split- and full-screen,
1581 * or when switching between two different full-screen views. */
1582 if (nviews != displayed_views() ||
1583 (nviews == 1 && base_view != display[0]))
1586 if (split && prev->lineno - prev->offset >= prev->height) {
1587 /* Take the title line into account. */
1588 int lines = prev->lineno - prev->offset - prev->height + 1;
1590 /* Scroll the view that was split if the current line is
1591 * outside the new limited view. */
1592 do_scroll_view(prev, lines, TRUE);
1595 if (prev && view != prev) {
1596 if (split && !backgrounded) {
1597 /* "Blur" the previous view. */
1598 update_view_title(prev);
1601 view->parent = prev;
1604 if (view->pipe && view->lines == 0) {
1605 /* Clear the old view and let the incremental updating refill
1614 /* If the view is backgrounded the above calls to report()
1615 * won't redraw the view title. */
1617 update_view_title(view);
1622 * User request switch noodle
1626 view_driver(struct view *view, enum request request)
1633 case REQ_MOVE_PAGE_UP:
1634 case REQ_MOVE_PAGE_DOWN:
1635 case REQ_MOVE_FIRST_LINE:
1636 case REQ_MOVE_LAST_LINE:
1637 move_view(view, request, TRUE);
1640 case REQ_SCROLL_LINE_DOWN:
1641 case REQ_SCROLL_LINE_UP:
1642 case REQ_SCROLL_PAGE_DOWN:
1643 case REQ_SCROLL_PAGE_UP:
1644 scroll_view(view, request);
1651 case REQ_VIEW_PAGER:
1652 open_view(view, request, OPEN_DEFAULT);
1657 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
1659 if (view == VIEW(REQ_VIEW_DIFF) &&
1660 view->parent == VIEW(REQ_VIEW_MAIN)) {
1661 bool redraw = display[1] == view;
1663 view = view->parent;
1664 move_view(view, request, redraw);
1666 update_view_title(view);
1668 move_view(view, request, TRUE);
1675 report("Nothing to enter");
1678 return view->ops->enter(view, &view->line[view->lineno]);
1682 int nviews = displayed_views();
1683 int next_view = (current_view + 1) % nviews;
1685 if (next_view == current_view) {
1686 report("Only one view is displayed");
1690 current_view = next_view;
1691 /* Blur out the title of the previous view. */
1692 update_view_title(view);
1696 case REQ_TOGGLE_LINENO:
1697 opt_line_number = !opt_line_number;
1701 case REQ_TOGGLE_REV_GRAPH:
1702 opt_rev_graph = !opt_rev_graph;
1707 /* Always reload^Wrerun commands from the prompt. */
1708 open_view(view, opt_request, OPEN_RELOAD);
1711 case REQ_STOP_LOADING:
1712 for (i = 0; i < ARRAY_SIZE(views); i++) {
1715 report("Stopped loading the %s view", view->name),
1720 case REQ_SHOW_VERSION:
1721 report("%s (built %s)", VERSION, __DATE__);
1724 case REQ_SCREEN_RESIZE:
1727 case REQ_SCREEN_REDRAW:
1731 case REQ_SCREEN_UPDATE:
1735 case REQ_VIEW_CLOSE:
1736 /* XXX: Mark closed views by letting view->parent point to the
1737 * view itself. Parents to closed view should never be
1740 view->parent->parent != view->parent) {
1741 memset(display, 0, sizeof(display));
1743 display[current_view] = view->parent;
1744 view->parent = view;
1754 /* An unknown key will show most commonly used commands. */
1755 report("Unknown key, press 'h' for help");
1768 pager_draw(struct view *view, struct line *line, unsigned int lineno)
1770 char *text = line->data;
1771 enum line_type type = line->type;
1772 int textlen = strlen(text);
1775 wmove(view->win, lineno, 0);
1777 if (view->offset + lineno == view->lineno) {
1778 if (type == LINE_COMMIT) {
1779 string_copy(view->ref, text + 7);
1780 string_copy(ref_commit, view->ref);
1784 wchgat(view->win, -1, 0, type, NULL);
1787 attr = get_line_attr(type);
1788 wattrset(view->win, attr);
1790 if (opt_line_number || opt_tab_size < TABSIZE) {
1791 static char spaces[] = " ";
1792 int col_offset = 0, col = 0;
1794 if (opt_line_number) {
1795 unsigned long real_lineno = view->offset + lineno + 1;
1797 if (real_lineno == 1 ||
1798 (real_lineno % opt_num_interval) == 0) {
1799 wprintw(view->win, "%.*d", view->digits, real_lineno);
1802 waddnstr(view->win, spaces,
1803 MIN(view->digits, STRING_SIZE(spaces)));
1805 waddstr(view->win, ": ");
1806 col_offset = view->digits + 2;
1809 while (text && col_offset + col < view->width) {
1810 int cols_max = view->width - col_offset - col;
1814 if (*text == '\t') {
1816 assert(sizeof(spaces) > TABSIZE);
1818 cols = opt_tab_size - (col % opt_tab_size);
1821 text = strchr(text, '\t');
1822 cols = line ? text - pos : strlen(pos);
1825 waddnstr(view->win, pos, MIN(cols, cols_max));
1830 int col = 0, pos = 0;
1832 for (; pos < textlen && col < view->width; pos++, col++)
1833 if (text[pos] == '\t')
1834 col += TABSIZE - (col % TABSIZE) - 1;
1836 waddnstr(view->win, text, pos);
1843 add_pager_refs(struct view *view, struct line *line)
1846 char *data = line->data;
1848 int bufpos = 0, refpos = 0;
1849 const char *sep = "Refs: ";
1851 assert(line->type == LINE_COMMIT);
1853 refs = get_refs(data + STRING_SIZE("commit "));
1858 struct ref *ref = refs[refpos];
1859 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
1861 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
1864 } while (refs[refpos++]->next);
1866 if (!realloc_lines(view, view->line_size + 1))
1869 line = &view->line[view->lines];
1870 line->data = strdup(buf);
1874 line->type = LINE_PP_REFS;
1879 pager_read(struct view *view, char *data)
1881 struct line *line = &view->line[view->lines];
1883 line->data = strdup(data);
1887 line->type = get_line_type(line->data);
1890 if (line->type == LINE_COMMIT &&
1891 (view == VIEW(REQ_VIEW_DIFF) ||
1892 view == VIEW(REQ_VIEW_LOG)))
1893 add_pager_refs(view, line);
1899 pager_enter(struct view *view, struct line *line)
1903 if (line->type == LINE_COMMIT &&
1904 (view == VIEW(REQ_VIEW_LOG) ||
1905 view == VIEW(REQ_VIEW_PAGER))) {
1906 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
1910 /* Always scroll the view even if it was split. That way
1911 * you can use Enter to scroll through the log view and
1912 * split open each commit diff. */
1913 scroll_view(view, REQ_SCROLL_LINE_DOWN);
1915 /* FIXME: A minor workaround. Scrolling the view will call report("")
1916 * but if we are scrolling a non-current view this won't properly
1917 * update the view title. */
1919 update_view_title(view);
1924 static struct view_ops pager_ops = {
1937 char id[41]; /* SHA1 ID. */
1938 char title[75]; /* First line of the commit message. */
1939 char author[75]; /* Author of the commit. */
1940 struct tm time; /* Date from the author ident. */
1941 struct ref **refs; /* Repository references. */
1942 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
1943 size_t graph_size; /* The width of the graph array. */
1947 main_draw(struct view *view, struct line *line, unsigned int lineno)
1949 char buf[DATE_COLS + 1];
1950 struct commit *commit = line->data;
1951 enum line_type type;
1957 if (!*commit->author)
1960 wmove(view->win, lineno, col);
1962 if (view->offset + lineno == view->lineno) {
1963 string_copy(view->ref, commit->id);
1964 string_copy(ref_commit, view->ref);
1966 wattrset(view->win, get_line_attr(type));
1967 wchgat(view->win, -1, 0, type, NULL);
1970 type = LINE_MAIN_COMMIT;
1971 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
1974 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
1975 waddnstr(view->win, buf, timelen);
1976 waddstr(view->win, " ");
1979 wmove(view->win, lineno, col);
1980 if (type != LINE_CURSOR)
1981 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
1984 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
1986 authorlen = strlen(commit->author);
1987 if (authorlen > AUTHOR_COLS - 2) {
1988 authorlen = AUTHOR_COLS - 2;
1994 waddnstr(view->win, commit->author, authorlen);
1995 if (type != LINE_CURSOR)
1996 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
1997 waddch(view->win, '~');
1999 waddstr(view->win, commit->author);
2003 if (type != LINE_CURSOR)
2004 wattrset(view->win, A_NORMAL);
2006 if (opt_rev_graph && commit->graph_size) {
2009 wmove(view->win, lineno, col);
2010 /* Using waddch() instead of waddnstr() ensures that
2011 * they'll be rendered correctly for the cursor line. */
2012 for (i = 0; i < commit->graph_size; i++)
2013 waddch(view->win, commit->graph[i]);
2015 col += commit->graph_size + 1;
2018 wmove(view->win, lineno, col);
2024 if (type == LINE_CURSOR)
2026 else if (commit->refs[i]->tag)
2027 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2029 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2030 waddstr(view->win, "[");
2031 waddstr(view->win, commit->refs[i]->name);
2032 waddstr(view->win, "]");
2033 if (type != LINE_CURSOR)
2034 wattrset(view->win, A_NORMAL);
2035 waddstr(view->win, " ");
2036 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2037 } while (commit->refs[i++]->next);
2040 if (type != LINE_CURSOR)
2041 wattrset(view->win, get_line_attr(type));
2044 int titlelen = strlen(commit->title);
2046 if (col + titlelen > view->width)
2047 titlelen = view->width - col;
2049 waddnstr(view->win, commit->title, titlelen);
2055 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2057 main_read(struct view *view, char *line)
2059 enum line_type type = get_line_type(line);
2060 struct commit *commit = view->lines
2061 ? view->line[view->lines - 1].data : NULL;
2065 commit = calloc(1, sizeof(struct commit));
2069 line += STRING_SIZE("commit ");
2071 view->line[view->lines++].data = commit;
2072 string_copy(commit->id, line);
2073 commit->refs = get_refs(commit->id);
2074 commit->graph[commit->graph_size++] = ACS_LTEE;
2079 char *ident = line + STRING_SIZE("author ");
2080 char *end = strchr(ident, '<');
2086 for (; end > ident && isspace(end[-1]); end--) ;
2090 string_copy(commit->author, ident);
2092 /* Parse epoch and timezone */
2094 char *secs = strchr(end + 1, '>');
2098 if (!secs || secs[1] != ' ')
2102 time = (time_t) atol(secs);
2103 zone = strchr(secs, ' ');
2104 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2108 tz = ('0' - zone[1]) * 60 * 60 * 10;
2109 tz += ('0' - zone[2]) * 60 * 60;
2110 tz += ('0' - zone[3]) * 60;
2111 tz += ('0' - zone[4]) * 60;
2118 gmtime_r(&time, &commit->time);
2126 /* Fill in the commit title if it has not already been set. */
2127 if (commit->title[0])
2130 /* Require titles to start with a non-space character at the
2131 * offset used by git log. */
2132 /* FIXME: More gracefull handling of titles; append "..." to
2133 * shortened titles, etc. */
2134 if (strncmp(line, " ", 4) ||
2138 string_copy(commit->title, line + 4);
2145 main_enter(struct view *view, struct line *line)
2147 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2149 open_view(view, REQ_VIEW_DIFF, flags);
2153 static struct view_ops main_ops = {
2161 static void load_help_page(void)
2164 struct view *view = VIEW(REQ_VIEW_HELP);
2165 int lines = ARRAY_SIZE(req_info) + 2;
2168 if (view->lines > 0)
2171 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2172 if (!req_info[i].request)
2175 view->line = calloc(lines, sizeof(*view->line));
2177 report("Allocation failure");
2181 pager_read(view, "Quick reference for tig keybindings:");
2183 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2186 if (!req_info[i].request) {
2187 pager_read(view, "");
2188 pager_read(view, req_info[i].help);
2192 key = get_key(req_info[i].request);
2193 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
2196 pager_read(view, buf);
2202 * Unicode / UTF-8 handling
2204 * NOTE: Much of the following code for dealing with unicode is derived from
2205 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2206 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2209 /* I've (over)annotated a lot of code snippets because I am not entirely
2210 * confident that the approach taken by this small UTF-8 interface is correct.
2214 unicode_width(unsigned long c)
2217 (c <= 0x115f /* Hangul Jamo */
2220 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2222 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2223 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2224 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2225 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2226 || (c >= 0xffe0 && c <= 0xffe6)
2227 || (c >= 0x20000 && c <= 0x2fffd)
2228 || (c >= 0x30000 && c <= 0x3fffd)))
2234 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2235 * Illegal bytes are set one. */
2236 static const unsigned char utf8_bytes[256] = {
2237 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,
2238 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,
2239 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,
2240 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,
2241 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,
2242 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,
2243 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,
2244 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,
2247 /* Decode UTF-8 multi-byte representation into a unicode character. */
2248 static inline unsigned long
2249 utf8_to_unicode(const char *string, size_t length)
2251 unsigned long unicode;
2255 unicode = string[0];
2258 unicode = (string[0] & 0x1f) << 6;
2259 unicode += (string[1] & 0x3f);
2262 unicode = (string[0] & 0x0f) << 12;
2263 unicode += ((string[1] & 0x3f) << 6);
2264 unicode += (string[2] & 0x3f);
2267 unicode = (string[0] & 0x0f) << 18;
2268 unicode += ((string[1] & 0x3f) << 12);
2269 unicode += ((string[2] & 0x3f) << 6);
2270 unicode += (string[3] & 0x3f);
2273 unicode = (string[0] & 0x0f) << 24;
2274 unicode += ((string[1] & 0x3f) << 18);
2275 unicode += ((string[2] & 0x3f) << 12);
2276 unicode += ((string[3] & 0x3f) << 6);
2277 unicode += (string[4] & 0x3f);
2280 unicode = (string[0] & 0x01) << 30;
2281 unicode += ((string[1] & 0x3f) << 24);
2282 unicode += ((string[2] & 0x3f) << 18);
2283 unicode += ((string[3] & 0x3f) << 12);
2284 unicode += ((string[4] & 0x3f) << 6);
2285 unicode += (string[5] & 0x3f);
2288 die("Invalid unicode length");
2291 /* Invalid characters could return the special 0xfffd value but NUL
2292 * should be just as good. */
2293 return unicode > 0xffff ? 0 : unicode;
2296 /* Calculates how much of string can be shown within the given maximum width
2297 * and sets trimmed parameter to non-zero value if all of string could not be
2300 * Additionally, adds to coloffset how many many columns to move to align with
2301 * the expected position. Takes into account how multi-byte and double-width
2302 * characters will effect the cursor position.
2304 * Returns the number of bytes to output from string to satisfy max_width. */
2306 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
2308 const char *start = string;
2309 const char *end = strchr(string, '\0');
2315 while (string < end) {
2316 int c = *(unsigned char *) string;
2317 unsigned char bytes = utf8_bytes[c];
2319 unsigned long unicode;
2321 if (string + bytes > end)
2324 /* Change representation to figure out whether
2325 * it is a single- or double-width character. */
2327 unicode = utf8_to_unicode(string, bytes);
2328 /* FIXME: Graceful handling of invalid unicode character. */
2332 ucwidth = unicode_width(unicode);
2334 if (width > max_width) {
2339 /* The column offset collects the differences between the
2340 * number of bytes encoding a character and the number of
2341 * columns will be used for rendering said character.
2343 * So if some character A is encoded in 2 bytes, but will be
2344 * represented on the screen using only 1 byte this will and up
2345 * adding 1 to the multi-byte column offset.
2347 * Assumes that no double-width character can be encoding in
2348 * less than two bytes. */
2349 if (bytes > ucwidth)
2350 mbwidth += bytes - ucwidth;
2355 *coloffset += mbwidth;
2357 return string - start;
2365 /* Whether or not the curses interface has been initialized. */
2366 static bool cursed = FALSE;
2368 /* The status window is used for polling keystrokes. */
2369 static WINDOW *status_win;
2371 /* Update status and title window. */
2373 report(const char *msg, ...)
2375 static bool empty = TRUE;
2376 struct view *view = display[current_view];
2378 if (!empty || *msg) {
2381 va_start(args, msg);
2384 wmove(status_win, 0, 0);
2386 vwprintw(status_win, msg, args);
2391 wrefresh(status_win);
2396 update_view_title(view);
2397 update_display_cursor();
2400 /* Controls when nodelay should be in effect when polling user input. */
2402 set_nonblocking_input(bool loading)
2404 static unsigned int loading_views;
2406 if ((loading == FALSE && loading_views-- == 1) ||
2407 (loading == TRUE && loading_views++ == 0))
2408 nodelay(status_win, loading);
2416 /* Initialize the curses library */
2417 if (isatty(STDIN_FILENO)) {
2418 cursed = !!initscr();
2420 /* Leave stdin and stdout alone when acting as a pager. */
2421 FILE *io = fopen("/dev/tty", "r+");
2423 cursed = !!newterm(NULL, io, io);
2427 die("Failed to initialize curses");
2429 nonl(); /* Tell curses not to do NL->CR/NL on output */
2430 cbreak(); /* Take input chars one at a time, no wait for \n */
2431 noecho(); /* Don't echo input */
2432 leaveok(stdscr, TRUE);
2437 getmaxyx(stdscr, y, x);
2438 status_win = newwin(1, 0, y - 1, 0);
2440 die("Failed to create status window");
2442 /* Enable keyboard mapping */
2443 keypad(status_win, TRUE);
2444 wbkgdset(status_win, get_line_attr(LINE_STATUS));
2449 * Repository references
2452 static struct ref *refs;
2453 static size_t refs_size;
2455 /* Id <-> ref store */
2456 static struct ref ***id_refs;
2457 static size_t id_refs_size;
2459 static struct ref **
2462 struct ref ***tmp_id_refs;
2463 struct ref **ref_list = NULL;
2464 size_t ref_list_size = 0;
2467 for (i = 0; i < id_refs_size; i++)
2468 if (!strcmp(id, id_refs[i][0]->id))
2471 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
2475 id_refs = tmp_id_refs;
2477 for (i = 0; i < refs_size; i++) {
2480 if (strcmp(id, refs[i].id))
2483 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
2491 if (ref_list_size > 0)
2492 ref_list[ref_list_size - 1]->next = 1;
2493 ref_list[ref_list_size] = &refs[i];
2495 /* XXX: The properties of the commit chains ensures that we can
2496 * safely modify the shared ref. The repo references will
2497 * always be similar for the same id. */
2498 ref_list[ref_list_size]->next = 0;
2503 id_refs[id_refs_size++] = ref_list;
2509 read_ref(char *id, int idlen, char *name, int namelen)
2514 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
2515 /* Commits referenced by tags has "^{}" appended. */
2516 if (name[namelen - 1] != '}')
2519 while (namelen > 0 && name[namelen] != '^')
2523 namelen -= STRING_SIZE("refs/tags/");
2524 name += STRING_SIZE("refs/tags/");
2526 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
2527 namelen -= STRING_SIZE("refs/heads/");
2528 name += STRING_SIZE("refs/heads/");
2530 } else if (!strcmp(name, "HEAD")) {
2534 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
2538 ref = &refs[refs_size++];
2539 ref->name = malloc(namelen + 1);
2543 strncpy(ref->name, name, namelen);
2544 ref->name[namelen] = 0;
2546 string_copy(ref->id, id);
2554 const char *cmd_env = getenv("TIG_LS_REMOTE");
2555 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
2557 return read_properties(popen(cmd, "r"), "\t", read_ref);
2561 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
2563 if (!strcmp(name, "i18n.commitencoding"))
2564 string_copy(opt_encoding, value);
2570 load_repo_config(void)
2572 return read_properties(popen("git repo-config --list", "r"),
2573 "=", read_repo_config_option);
2577 read_properties(FILE *pipe, const char *separators,
2578 int (*read_property)(char *, int, char *, int))
2580 char buffer[BUFSIZ];
2587 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
2592 name = chomp_string(name);
2593 namelen = strcspn(name, separators);
2595 if (name[namelen]) {
2597 value = chomp_string(name + namelen + 1);
2598 valuelen = strlen(value);
2605 state = read_property(name, namelen, value, valuelen);
2608 if (state != ERR && ferror(pipe))
2621 static void __NORETURN
2624 /* XXX: Restore tty modes and let the OS cleanup the rest! */
2630 static void __NORETURN
2631 die(const char *err, ...)
2637 va_start(args, err);
2638 fputs("tig: ", stderr);
2639 vfprintf(stderr, err, args);
2640 fputs("\n", stderr);
2647 main(int argc, char *argv[])
2650 enum request request;
2653 signal(SIGINT, quit);
2655 if (load_options() == ERR)
2656 die("Failed to load user config.");
2658 /* Load the repo config file so options can be overwritten from
2659 * the command line. */
2660 if (load_repo_config() == ERR)
2661 die("Failed to load repo config.");
2663 if (!parse_options(argc, argv))
2666 if (load_refs() == ERR)
2667 die("Failed to load refs.");
2669 /* Require a git repository unless when running in pager mode. */
2670 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
2671 die("Not a git repository");
2673 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2674 view->cmd_env = getenv(view->cmd_env);
2676 request = opt_request;
2680 while (view_driver(display[current_view], request)) {
2684 foreach_view (view, i)
2687 /* Refresh, accept single keystroke of input */
2688 key = wgetch(status_win);
2689 request = get_request(key);
2691 /* Some low-level request handling. This keeps access to
2692 * status_win restricted. */
2696 /* Temporarily switch to line-oriented and echoed
2701 if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) {
2702 memcpy(opt_cmd, "git ", 4);
2703 opt_request = REQ_VIEW_PAGER;
2705 report("Prompt interrupted by loading view, "
2706 "press 'z' to stop loading views");
2707 request = REQ_SCREEN_UPDATE;
2714 case REQ_SCREEN_RESIZE:
2718 getmaxyx(stdscr, height, width);
2720 /* Resize the status view and let the view driver take
2721 * care of resizing the displayed views. */
2722 wresize(status_win, 1, width);
2723 mvwin(status_win, height - 1, 0);
2724 wrefresh(status_win);