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-0.4.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
64 /* This color name can be used to refer to the default term colors. */
65 #define COLOR_DEFAULT (-1)
67 #define ICONV_NONE ((iconv_t) -1)
69 /* The format and size of the date column in the main view. */
70 #define DATE_FORMAT "%Y-%m-%d %H:%M"
71 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
73 #define AUTHOR_COLS 20
75 /* The default interval between line numbers. */
76 #define NUMBER_INTERVAL 1
80 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
82 #define TIG_LS_REMOTE \
83 "git ls-remote . 2>/dev/null"
85 #define TIG_DIFF_CMD \
86 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
89 "git log --cc --stat -n100 %s 2>/dev/null"
91 #define TIG_MAIN_CMD \
92 "git log --topo-order --pretty=raw %s 2>/dev/null"
94 #define TIG_TREE_CMD \
97 #define TIG_BLOB_CMD \
98 "git cat-file blob %s"
100 /* XXX: Needs to be defined to the empty string. */
101 #define TIG_HELP_CMD ""
102 #define TIG_PAGER_CMD ""
104 /* Some ascii-shorthands fitted into the ncurses namespace. */
106 #define KEY_RETURN '\r'
111 char *name; /* Ref name; tag or head names are shortened. */
112 char id[41]; /* Commit SHA1 ID */
113 unsigned int tag:1; /* Is it a tag? */
114 unsigned int next:1; /* For ref lists: are there more refs? */
117 static struct ref **get_refs(char *id);
126 set_from_int_map(struct int_map *map, size_t map_size,
127 int *value, const char *name, int namelen)
132 for (i = 0; i < map_size; i++)
133 if (namelen == map[i].namelen &&
134 !strncasecmp(name, map[i].name, namelen)) {
135 *value = map[i].value;
148 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
150 if (srclen > dstlen - 1)
153 strncpy(dst, src, srclen);
157 /* Shorthands for safely copying into a fixed buffer. */
159 #define string_copy(dst, src) \
160 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
162 #define string_ncopy(dst, src, srclen) \
163 string_ncopy_do(dst, sizeof(dst), src, srclen)
166 chomp_string(char *name)
170 while (isspace(*name))
173 namelen = strlen(name) - 1;
174 while (namelen > 0 && isspace(name[namelen]))
181 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
184 size_t pos = bufpos ? *bufpos : 0;
187 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
193 return pos >= bufsize ? FALSE : TRUE;
196 #define string_format(buf, fmt, args...) \
197 string_nformat(buf, sizeof(buf), NULL, fmt, args)
199 #define string_format_from(buf, from, fmt, args...) \
200 string_nformat(buf, sizeof(buf), from, fmt, args)
203 string_enum_compare(const char *str1, const char *str2, int len)
207 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
209 /* Diff-Header == DIFF_HEADER */
210 for (i = 0; i < len; i++) {
211 if (toupper(str1[i]) == toupper(str2[i]))
214 if (string_enum_sep(str1[i]) &&
215 string_enum_sep(str2[i]))
218 return str1[i] - str2[i];
226 * NOTE: The following is a slightly modified copy of the git project's shell
227 * quoting routines found in the quote.c file.
229 * Help to copy the thing properly quoted for the shell safety. any single
230 * quote is replaced with '\'', any exclamation point is replaced with '\!',
231 * and the whole thing is enclosed in a
234 * original sq_quote result
235 * name ==> name ==> 'name'
236 * a b ==> a b ==> 'a b'
237 * a'b ==> a'\''b ==> 'a'\''b'
238 * a!b ==> a'\!'b ==> 'a'\!'b'
242 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
246 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
249 while ((c = *src++)) {
250 if (c == '\'' || c == '!') {
270 /* XXX: Keep the view request first and in sync with views[]. */ \
271 REQ_GROUP("View switching") \
272 REQ_(VIEW_MAIN, "Show main view"), \
273 REQ_(VIEW_DIFF, "Show diff view"), \
274 REQ_(VIEW_LOG, "Show log view"), \
275 REQ_(VIEW_TREE, "Show tree view"), \
276 REQ_(VIEW_BLOB, "Show blob view"), \
277 REQ_(VIEW_HELP, "Show help page"), \
278 REQ_(VIEW_PAGER, "Show pager view"), \
280 REQ_GROUP("View manipulation") \
281 REQ_(ENTER, "Enter current line and scroll"), \
282 REQ_(NEXT, "Move to next"), \
283 REQ_(PREVIOUS, "Move to previous"), \
284 REQ_(VIEW_NEXT, "Move focus to next view"), \
285 REQ_(VIEW_CLOSE, "Close the current view"), \
286 REQ_(QUIT, "Close all views and quit"), \
288 REQ_GROUP("Cursor navigation") \
289 REQ_(MOVE_UP, "Move cursor one line up"), \
290 REQ_(MOVE_DOWN, "Move cursor one line down"), \
291 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
292 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
293 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
294 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
296 REQ_GROUP("Scrolling") \
297 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
298 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
299 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
300 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
302 REQ_GROUP("Searching") \
303 REQ_(SEARCH, "Search the view"), \
304 REQ_(SEARCH_BACK, "Search backwards in the view"), \
305 REQ_(FIND_NEXT, "Find next search match"), \
306 REQ_(FIND_PREV, "Find previous search match"), \
309 REQ_(NONE, "Do nothing"), \
310 REQ_(PROMPT, "Bring up the prompt"), \
311 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
312 REQ_(SCREEN_RESIZE, "Resize the screen"), \
313 REQ_(SHOW_VERSION, "Show version information"), \
314 REQ_(STOP_LOADING, "Stop all loading views"), \
315 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
316 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
319 /* User action requests. */
321 #define REQ_GROUP(help)
322 #define REQ_(req, help) REQ_##req
324 /* Offset all requests to avoid conflicts with ncurses getch values. */
325 REQ_OFFSET = KEY_MAX + 1,
333 struct request_info {
334 enum request request;
340 static struct request_info req_info[] = {
341 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
342 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
349 get_request(const char *name)
351 int namelen = strlen(name);
354 for (i = 0; i < ARRAY_SIZE(req_info); i++)
355 if (req_info[i].namelen == namelen &&
356 !string_enum_compare(req_info[i].name, name, namelen))
357 return req_info[i].request;
367 static const char usage[] =
368 VERSION " (" __DATE__ ")\n"
370 "Usage: tig [options]\n"
371 " or: tig [options] [--] [git log options]\n"
372 " or: tig [options] log [git log options]\n"
373 " or: tig [options] diff [git diff options]\n"
374 " or: tig [options] show [git show options]\n"
375 " or: tig [options] < [git command output]\n"
378 " -l Start up in log view\n"
379 " -d Start up in diff view\n"
380 " -n[I], --line-number[=I] Show line numbers with given interval\n"
381 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
382 " -- Mark end of tig options\n"
383 " -v, --version Show version and exit\n"
384 " -h, --help Show help message and exit\n";
386 /* Option and state variables. */
387 static bool opt_line_number = FALSE;
388 static bool opt_rev_graph = TRUE;
389 static int opt_num_interval = NUMBER_INTERVAL;
390 static int opt_tab_size = TABSIZE;
391 static enum request opt_request = REQ_VIEW_MAIN;
392 static char opt_cmd[SIZEOF_STR] = "";
393 static char opt_path[SIZEOF_STR] = "";
394 static FILE *opt_pipe = NULL;
395 static char opt_encoding[20] = "UTF-8";
396 static bool opt_utf8 = TRUE;
397 static char opt_codeset[20] = "UTF-8";
398 static iconv_t opt_iconv = ICONV_NONE;
399 static char opt_search[SIZEOF_STR] = "";
407 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
417 int namelen = strlen(name);
421 if (strncmp(opt, name, namelen))
424 if (opt[namelen] == '=')
425 value = opt + namelen + 1;
428 if (!short_name || opt[1] != short_name)
433 va_start(args, type);
434 if (type == OPT_INT) {
435 number = va_arg(args, int *);
437 *number = atoi(value);
444 /* Returns the index of log or diff command or -1 to exit. */
446 parse_options(int argc, char *argv[])
450 for (i = 1; i < argc; i++) {
453 if (!strcmp(opt, "-l")) {
454 opt_request = REQ_VIEW_LOG;
458 if (!strcmp(opt, "-d")) {
459 opt_request = REQ_VIEW_DIFF;
463 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
464 opt_line_number = TRUE;
468 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
469 opt_tab_size = MIN(opt_tab_size, TABSIZE);
473 if (check_option(opt, 'v', "version", OPT_NONE)) {
474 printf("tig version %s\n", VERSION);
478 if (check_option(opt, 'h', "help", OPT_NONE)) {
483 if (!strcmp(opt, "--")) {
488 if (!strcmp(opt, "log") ||
489 !strcmp(opt, "diff") ||
490 !strcmp(opt, "show")) {
491 opt_request = opt[0] == 'l'
492 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
496 if (opt[0] && opt[0] != '-')
499 die("unknown option '%s'\n\n%s", opt, usage);
502 if (!isatty(STDIN_FILENO)) {
503 opt_request = REQ_VIEW_PAGER;
506 } else if (i < argc) {
509 if (opt_request == REQ_VIEW_MAIN)
510 /* XXX: This is vulnerable to the user overriding
511 * options required for the main view parser. */
512 string_copy(opt_cmd, "git log --stat --pretty=raw");
514 string_copy(opt_cmd, "git");
515 buf_size = strlen(opt_cmd);
517 while (buf_size < sizeof(opt_cmd) && i < argc) {
518 opt_cmd[buf_size++] = ' ';
519 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
522 if (buf_size >= sizeof(opt_cmd))
523 die("command too long");
525 opt_cmd[buf_size] = 0;
529 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
537 * Line-oriented content detection.
541 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
542 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
543 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
544 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
545 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
546 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
547 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
549 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
550 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
555 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
556 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
557 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
558 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
559 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
562 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
563 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
564 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
566 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
567 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
568 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
569 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
570 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
571 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
572 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
573 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
574 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
575 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
576 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
577 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
578 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
579 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
580 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
583 #define LINE(type, line, fg, bg, attr) \
590 const char *name; /* Option name. */
591 int namelen; /* Size of option name. */
592 const char *line; /* The start of line to match. */
593 int linelen; /* Size of string to match. */
594 int fg, bg, attr; /* Color and text attributes for the lines. */
597 static struct line_info line_info[] = {
598 #define LINE(type, line, fg, bg, attr) \
599 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
604 static enum line_type
605 get_line_type(char *line)
607 int linelen = strlen(line);
610 for (type = 0; type < ARRAY_SIZE(line_info); type++)
611 /* Case insensitive search matches Signed-off-by lines better. */
612 if (linelen >= line_info[type].linelen &&
613 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
620 get_line_attr(enum line_type type)
622 assert(type < ARRAY_SIZE(line_info));
623 return COLOR_PAIR(type) | line_info[type].attr;
626 static struct line_info *
627 get_line_info(char *name, int namelen)
631 for (type = 0; type < ARRAY_SIZE(line_info); type++)
632 if (namelen == line_info[type].namelen &&
633 !string_enum_compare(line_info[type].name, name, namelen))
634 return &line_info[type];
642 int default_bg = COLOR_BLACK;
643 int default_fg = COLOR_WHITE;
648 if (use_default_colors() != ERR) {
653 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
654 struct line_info *info = &line_info[type];
655 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
656 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
658 init_pair(type, fg, bg);
666 unsigned int selected:1;
668 void *data; /* User data */
678 enum request request;
679 struct keybinding *next;
682 static struct keybinding default_keybindings[] = {
684 { 'm', REQ_VIEW_MAIN },
685 { 'd', REQ_VIEW_DIFF },
686 { 'l', REQ_VIEW_LOG },
687 { 't', REQ_VIEW_TREE },
688 { 'f', REQ_VIEW_BLOB },
689 { 'p', REQ_VIEW_PAGER },
690 { 'h', REQ_VIEW_HELP },
692 /* View manipulation */
693 { 'q', REQ_VIEW_CLOSE },
694 { KEY_TAB, REQ_VIEW_NEXT },
695 { KEY_RETURN, REQ_ENTER },
696 { KEY_UP, REQ_PREVIOUS },
697 { KEY_DOWN, REQ_NEXT },
699 /* Cursor navigation */
700 { 'k', REQ_MOVE_UP },
701 { 'j', REQ_MOVE_DOWN },
702 { KEY_HOME, REQ_MOVE_FIRST_LINE },
703 { KEY_END, REQ_MOVE_LAST_LINE },
704 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
705 { ' ', REQ_MOVE_PAGE_DOWN },
706 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
707 { 'b', REQ_MOVE_PAGE_UP },
708 { '-', REQ_MOVE_PAGE_UP },
711 { KEY_IC, REQ_SCROLL_LINE_UP },
712 { KEY_DC, REQ_SCROLL_LINE_DOWN },
713 { 'w', REQ_SCROLL_PAGE_UP },
714 { 's', REQ_SCROLL_PAGE_DOWN },
718 { '?', REQ_SEARCH_BACK },
719 { 'n', REQ_FIND_NEXT },
720 { 'N', REQ_FIND_PREV },
724 { 'z', REQ_STOP_LOADING },
725 { 'v', REQ_SHOW_VERSION },
726 { 'r', REQ_SCREEN_REDRAW },
727 { '.', REQ_TOGGLE_LINENO },
728 { 'g', REQ_TOGGLE_REV_GRAPH },
731 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
734 /* Using the ncurses SIGWINCH handler. */
735 { KEY_RESIZE, REQ_SCREEN_RESIZE },
738 #define KEYMAP_INFO \
749 #define KEYMAP_(name) KEYMAP_##name
754 static struct int_map keymap_table[] = {
755 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
760 #define set_keymap(map, name) \
761 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
763 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
766 add_keybinding(enum keymap keymap, enum request request, int key)
768 struct keybinding *keybinding;
770 keybinding = calloc(1, sizeof(*keybinding));
772 die("Failed to allocate keybinding");
774 keybinding->alias = key;
775 keybinding->request = request;
776 keybinding->next = keybindings[keymap];
777 keybindings[keymap] = keybinding;
780 /* Looks for a key binding first in the given map, then in the generic map, and
781 * lastly in the default keybindings. */
783 get_keybinding(enum keymap keymap, int key)
785 struct keybinding *kbd;
788 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
789 if (kbd->alias == key)
792 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
793 if (kbd->alias == key)
796 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
797 if (default_keybindings[i].alias == key)
798 return default_keybindings[i].request;
800 return (enum request) key;
809 static struct key key_table[] = {
810 { "Enter", KEY_RETURN },
812 { "Backspace", KEY_BACKSPACE },
814 { "Escape", KEY_ESC },
815 { "Left", KEY_LEFT },
816 { "Right", KEY_RIGHT },
818 { "Down", KEY_DOWN },
819 { "Insert", KEY_IC },
820 { "Delete", KEY_DC },
822 { "Home", KEY_HOME },
824 { "PageUp", KEY_PPAGE },
825 { "PageDown", KEY_NPAGE },
835 { "F10", KEY_F(10) },
836 { "F11", KEY_F(11) },
837 { "F12", KEY_F(12) },
841 get_key_value(const char *name)
845 for (i = 0; i < ARRAY_SIZE(key_table); i++)
846 if (!strcasecmp(key_table[i].name, name))
847 return key_table[i].value;
849 if (strlen(name) == 1 && isprint(*name))
856 get_key(enum request request)
858 static char buf[BUFSIZ];
859 static char key_char[] = "'X'";
866 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
867 struct keybinding *keybinding = &default_keybindings[i];
871 if (keybinding->request != request)
874 for (key = 0; key < ARRAY_SIZE(key_table); key++)
875 if (key_table[key].value == keybinding->alias)
876 seq = key_table[key].name;
879 keybinding->alias < 127 &&
880 isprint(keybinding->alias)) {
881 key_char[1] = (char) keybinding->alias;
888 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
889 return "Too many keybindings!";
898 * User config file handling.
901 static struct int_map color_map[] = {
902 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
914 #define set_color(color, name) \
915 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
917 static struct int_map attr_map[] = {
918 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
928 #define set_attribute(attr, name) \
929 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
931 static int config_lineno;
932 static bool config_errors;
933 static char *config_msg;
935 /* Wants: object fgcolor bgcolor [attr] */
937 option_color_command(int argc, char *argv[])
939 struct line_info *info;
941 if (argc != 3 && argc != 4) {
942 config_msg = "Wrong number of arguments given to color command";
946 info = get_line_info(argv[0], strlen(argv[0]));
948 config_msg = "Unknown color name";
952 if (set_color(&info->fg, argv[1]) == ERR ||
953 set_color(&info->bg, argv[2]) == ERR) {
954 config_msg = "Unknown color";
958 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
959 config_msg = "Unknown attribute";
966 /* Wants: name = value */
968 option_set_command(int argc, char *argv[])
971 config_msg = "Wrong number of arguments given to set command";
975 if (strcmp(argv[1], "=")) {
976 config_msg = "No value assigned";
980 if (!strcmp(argv[0], "show-rev-graph")) {
981 opt_rev_graph = (!strcmp(argv[2], "1") ||
982 !strcmp(argv[2], "true") ||
983 !strcmp(argv[2], "yes"));
987 if (!strcmp(argv[0], "line-number-interval")) {
988 opt_num_interval = atoi(argv[2]);
992 if (!strcmp(argv[0], "tab-size")) {
993 opt_tab_size = atoi(argv[2]);
997 if (!strcmp(argv[0], "commit-encoding")) {
999 int delimiter = *arg;
1002 switch (delimiter) {
1005 for (arg++, i = 0; arg[i]; i++)
1006 if (arg[i] == delimiter) {
1011 string_copy(opt_encoding, arg);
1016 config_msg = "Unknown variable name";
1020 /* Wants: mode request key */
1022 option_bind_command(int argc, char *argv[])
1024 enum request request;
1029 config_msg = "Wrong number of arguments given to bind command";
1033 if (set_keymap(&keymap, argv[0]) == ERR) {
1034 config_msg = "Unknown key map";
1038 key = get_key_value(argv[1]);
1040 config_msg = "Unknown key";
1044 request = get_request(argv[2]);
1045 if (request == REQ_UNKNOWN) {
1046 config_msg = "Unknown request name";
1050 add_keybinding(keymap, request, key);
1056 set_option(char *opt, char *value)
1063 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1064 argv[argc++] = value;
1071 while (isspace(*value))
1075 if (!strcmp(opt, "color"))
1076 return option_color_command(argc, argv);
1078 if (!strcmp(opt, "set"))
1079 return option_set_command(argc, argv);
1081 if (!strcmp(opt, "bind"))
1082 return option_bind_command(argc, argv);
1084 config_msg = "Unknown option command";
1089 read_option(char *opt, int optlen, char *value, int valuelen)
1094 config_msg = "Internal error";
1096 /* Check for comment markers, since read_properties() will
1097 * only ensure opt and value are split at first " \t". */
1098 optlen = strcspn(opt, "#");
1102 if (opt[optlen] != 0) {
1103 config_msg = "No option value";
1107 /* Look for comment endings in the value. */
1108 int len = strcspn(value, "#");
1110 if (len < valuelen) {
1112 value[valuelen] = 0;
1115 status = set_option(opt, value);
1118 if (status == ERR) {
1119 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1120 config_lineno, optlen, opt, config_msg);
1121 config_errors = TRUE;
1124 /* Always keep going if errors are encountered. */
1131 char *home = getenv("HOME");
1132 char buf[SIZEOF_STR];
1136 config_errors = FALSE;
1138 if (!home || !string_format(buf, "%s/.tigrc", home))
1141 /* It's ok that the file doesn't exist. */
1142 file = fopen(buf, "r");
1146 if (read_properties(file, " \t", read_option) == ERR ||
1147 config_errors == TRUE)
1148 fprintf(stderr, "Errors while loading %s.\n", buf);
1161 /* The display array of active views and the index of the current view. */
1162 static struct view *display[2];
1163 static unsigned int current_view;
1165 #define foreach_displayed_view(view, i) \
1166 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1168 #define displayed_views() (display[1] != NULL ? 2 : 1)
1170 /* Current head and commit ID */
1171 static char ref_blob[SIZEOF_REF] = "";
1172 static char ref_commit[SIZEOF_REF] = "HEAD";
1173 static char ref_head[SIZEOF_REF] = "HEAD";
1176 const char *name; /* View name */
1177 const char *cmd_fmt; /* Default command line format */
1178 const char *cmd_env; /* Command line set via environment */
1179 const char *id; /* Points to either of ref_{head,commit,blob} */
1181 struct view_ops *ops; /* View operations */
1183 enum keymap keymap; /* What keymap does this view have */
1185 char cmd[SIZEOF_STR]; /* Command buffer */
1186 char ref[SIZEOF_REF]; /* Hovered commit reference */
1187 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1189 int height, width; /* The width and height of the main window */
1190 WINDOW *win; /* The main window */
1191 WINDOW *title; /* The title window living below the main window */
1194 unsigned long offset; /* Offset of the window top */
1195 unsigned long lineno; /* Current line number */
1198 char grep[SIZEOF_STR]; /* Search string */
1199 regex_t *regex; /* Pre-compiled regex */
1201 /* If non-NULL, points to the view that opened this view. If this view
1202 * is closed tig will switch back to the parent view. */
1203 struct view *parent;
1206 unsigned long lines; /* Total number of lines */
1207 struct line *line; /* Line index */
1208 unsigned long line_size;/* Total number of allocated lines */
1209 unsigned int digits; /* Number of digits in the lines member. */
1217 /* What type of content being displayed. Used in the title bar. */
1219 /* Draw one line; @lineno must be < view->height. */
1220 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1221 /* Read one line; updates view->line. */
1222 bool (*read)(struct view *view, char *data);
1223 /* Depending on view, change display based on current line. */
1224 bool (*enter)(struct view *view, struct line *line);
1225 /* Search for regex in a line. */
1226 bool (*grep)(struct view *view, struct line *line);
1228 void (*select)(struct view *view, struct line *line);
1231 static struct view_ops pager_ops;
1232 static struct view_ops main_ops;
1233 static struct view_ops tree_ops;
1234 static struct view_ops blob_ops;
1236 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1237 { name, cmd, #env, ref, ops, map}
1239 #define VIEW_(id, name, ops, ref) \
1240 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1243 static struct view views[] = {
1244 VIEW_(MAIN, "main", &main_ops, ref_head),
1245 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1246 VIEW_(LOG, "log", &pager_ops, ref_head),
1247 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1248 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1249 VIEW_(HELP, "help", &pager_ops, "static"),
1250 VIEW_(PAGER, "pager", &pager_ops, "static"),
1253 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1255 #define foreach_view(view, i) \
1256 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1258 #define view_is_displayed(view) \
1259 (view == display[0] || view == display[1])
1262 draw_view_line(struct view *view, unsigned int lineno)
1265 bool selected = (view->offset + lineno == view->lineno);
1267 assert(view_is_displayed(view));
1269 if (view->offset + lineno >= view->lines)
1272 line = &view->line[view->offset + lineno];
1275 line->selected = TRUE;
1276 view->ops->select(view, line);
1277 } else if (line->selected) {
1278 line->selected = FALSE;
1279 wmove(view->win, lineno, 0);
1280 wclrtoeol(view->win);
1283 return view->ops->draw(view, line, lineno, selected);
1287 redraw_view_from(struct view *view, int lineno)
1289 assert(0 <= lineno && lineno < view->height);
1291 for (; lineno < view->height; lineno++) {
1292 if (!draw_view_line(view, lineno))
1296 redrawwin(view->win);
1297 wrefresh(view->win);
1301 redraw_view(struct view *view)
1304 redraw_view_from(view, 0);
1309 update_view_title(struct view *view)
1311 assert(view_is_displayed(view));
1313 if (view == display[current_view])
1314 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1316 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1318 werase(view->title);
1319 wmove(view->title, 0, 0);
1322 wprintw(view->title, "[%s] %s", view->name, view->ref);
1324 wprintw(view->title, "[%s]", view->name);
1326 if (view->lines || view->pipe) {
1327 unsigned int view_lines = view->offset + view->height;
1328 unsigned int lines = view->lines
1329 ? MIN(view_lines, view->lines) * 100 / view->lines
1332 wprintw(view->title, " - %s %d of %d (%d%%)",
1340 time_t secs = time(NULL) - view->start_time;
1342 /* Three git seconds are a long time ... */
1344 wprintw(view->title, " %lds", secs);
1347 wmove(view->title, 0, view->width - 1);
1348 wrefresh(view->title);
1352 resize_display(void)
1355 struct view *base = display[0];
1356 struct view *view = display[1] ? display[1] : display[0];
1358 /* Setup window dimensions */
1360 getmaxyx(stdscr, base->height, base->width);
1362 /* Make room for the status window. */
1366 /* Horizontal split. */
1367 view->width = base->width;
1368 view->height = SCALE_SPLIT_VIEW(base->height);
1369 base->height -= view->height;
1371 /* Make room for the title bar. */
1375 /* Make room for the title bar. */
1380 foreach_displayed_view (view, i) {
1382 view->win = newwin(view->height, 0, offset, 0);
1384 die("Failed to create %s view", view->name);
1386 scrollok(view->win, TRUE);
1388 view->title = newwin(1, 0, offset + view->height, 0);
1390 die("Failed to create title window");
1393 wresize(view->win, view->height, view->width);
1394 mvwin(view->win, offset, 0);
1395 mvwin(view->title, offset + view->height, 0);
1398 offset += view->height + 1;
1403 redraw_display(void)
1408 foreach_displayed_view (view, i) {
1410 update_view_title(view);
1415 update_display_cursor(void)
1417 struct view *view = display[current_view];
1419 /* Move the cursor to the right-most column of the cursor line.
1421 * XXX: This could turn out to be a bit expensive, but it ensures that
1422 * the cursor does not jump around. */
1424 wmove(view->win, view->lineno - view->offset, view->width - 1);
1425 wrefresh(view->win);
1433 /* Scrolling backend */
1435 do_scroll_view(struct view *view, int lines, bool redraw)
1437 assert(view_is_displayed(view));
1439 /* The rendering expects the new offset. */
1440 view->offset += lines;
1442 assert(0 <= view->offset && view->offset < view->lines);
1445 /* Redraw the whole screen if scrolling is pointless. */
1446 if (view->height < ABS(lines)) {
1450 int line = lines > 0 ? view->height - lines : 0;
1451 int end = line + ABS(lines);
1453 wscrl(view->win, lines);
1455 for (; line < end; line++) {
1456 if (!draw_view_line(view, line))
1461 /* Move current line into the view. */
1462 if (view->lineno < view->offset) {
1463 view->lineno = view->offset;
1464 draw_view_line(view, 0);
1466 } else if (view->lineno >= view->offset + view->height) {
1467 if (view->lineno == view->offset + view->height) {
1468 /* Clear the hidden line so it doesn't show if the view
1469 * is scrolled up. */
1470 wmove(view->win, view->height, 0);
1471 wclrtoeol(view->win);
1473 view->lineno = view->offset + view->height - 1;
1474 draw_view_line(view, view->lineno - view->offset);
1477 assert(view->offset <= view->lineno && view->lineno < view->lines);
1482 redrawwin(view->win);
1483 wrefresh(view->win);
1487 /* Scroll frontend */
1489 scroll_view(struct view *view, enum request request)
1494 case REQ_SCROLL_PAGE_DOWN:
1495 lines = view->height;
1496 case REQ_SCROLL_LINE_DOWN:
1497 if (view->offset + lines > view->lines)
1498 lines = view->lines - view->offset;
1500 if (lines == 0 || view->offset + view->height >= view->lines) {
1501 report("Cannot scroll beyond the last line");
1506 case REQ_SCROLL_PAGE_UP:
1507 lines = view->height;
1508 case REQ_SCROLL_LINE_UP:
1509 if (lines > view->offset)
1510 lines = view->offset;
1513 report("Cannot scroll beyond the first line");
1521 die("request %d not handled in switch", request);
1524 do_scroll_view(view, lines, TRUE);
1529 move_view(struct view *view, enum request request, bool redraw)
1534 case REQ_MOVE_FIRST_LINE:
1535 steps = -view->lineno;
1538 case REQ_MOVE_LAST_LINE:
1539 steps = view->lines - view->lineno - 1;
1542 case REQ_MOVE_PAGE_UP:
1543 steps = view->height > view->lineno
1544 ? -view->lineno : -view->height;
1547 case REQ_MOVE_PAGE_DOWN:
1548 steps = view->lineno + view->height >= view->lines
1549 ? view->lines - view->lineno - 1 : view->height;
1561 die("request %d not handled in switch", request);
1564 if (steps <= 0 && view->lineno == 0) {
1565 report("Cannot move beyond the first line");
1568 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1569 report("Cannot move beyond the last line");
1573 /* Move the current line */
1574 view->lineno += steps;
1575 assert(0 <= view->lineno && view->lineno < view->lines);
1577 /* Repaint the old "current" line if we be scrolling */
1578 if (ABS(steps) < view->height)
1579 draw_view_line(view, view->lineno - steps - view->offset);
1581 /* Check whether the view needs to be scrolled */
1582 if (view->lineno < view->offset ||
1583 view->lineno >= view->offset + view->height) {
1584 if (steps < 0 && -steps > view->offset) {
1585 steps = -view->offset;
1587 } else if (steps > 0) {
1588 if (view->lineno == view->lines - 1 &&
1589 view->lines > view->height) {
1590 steps = view->lines - view->offset - 1;
1591 if (steps >= view->height)
1592 steps -= view->height - 1;
1596 do_scroll_view(view, steps, redraw);
1600 /* Draw the current line */
1601 draw_view_line(view, view->lineno - view->offset);
1606 redrawwin(view->win);
1607 wrefresh(view->win);
1616 static void search_view(struct view *view, enum request request, const char *search);
1619 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1621 assert(view_is_displayed(view));
1623 if (!view->ops->grep(view, line))
1626 if (lineno - view->offset >= view->height) {
1627 view->offset = lineno;
1628 view->lineno = lineno;
1632 unsigned long old_lineno = view->lineno - view->offset;
1634 view->lineno = lineno;
1635 draw_view_line(view, old_lineno);
1637 draw_view_line(view, view->lineno - view->offset);
1638 redrawwin(view->win);
1639 wrefresh(view->win);
1642 report("Line %ld matches '%s'", lineno + 1, view->grep);
1647 find_next(struct view *view, enum request request)
1649 unsigned long lineno = view->lineno;
1654 report("No previous search");
1656 search_view(view, request, opt_search);
1666 case REQ_SEARCH_BACK:
1675 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1676 lineno += direction;
1678 /* Note, lineno is unsigned long so will wrap around in which case it
1679 * will become bigger than view->lines. */
1680 for (; lineno < view->lines; lineno += direction) {
1681 struct line *line = &view->line[lineno];
1683 if (find_next_line(view, lineno, line))
1687 report("No match found for '%s'", view->grep);
1691 search_view(struct view *view, enum request request, const char *search)
1696 regfree(view->regex);
1699 view->regex = calloc(1, sizeof(*view->regex));
1704 regex_err = regcomp(view->regex, search, REG_EXTENDED);
1705 if (regex_err != 0) {
1706 char buf[SIZEOF_STR] = "unknown error";
1708 regerror(regex_err, view->regex, buf, sizeof(buf));
1709 report("Search failed: %s", buf);
1713 string_copy(view->grep, search);
1715 find_next(view, request);
1719 * Incremental updating
1723 end_update(struct view *view)
1727 set_nonblocking_input(FALSE);
1728 if (view->pipe == stdin)
1736 begin_update(struct view *view)
1738 const char *id = view->id;
1744 string_copy(view->cmd, opt_cmd);
1746 /* When running random commands, the view ref could have become
1747 * invalid so clear it. */
1750 } else if (view == VIEW(REQ_VIEW_TREE)) {
1751 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1753 if (strcmp(view->vid, view->id))
1756 if (!string_format(view->cmd, format, id, opt_path))
1760 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1762 if (!string_format(view->cmd, format, id, id, id, id, id))
1766 /* Special case for the pager view. */
1768 view->pipe = opt_pipe;
1771 view->pipe = popen(view->cmd, "r");
1777 set_nonblocking_input(TRUE);
1782 string_copy(view->vid, id);
1787 for (i = 0; i < view->lines; i++)
1788 if (view->line[i].data)
1789 free(view->line[i].data);
1795 view->start_time = time(NULL);
1800 static struct line *
1801 realloc_lines(struct view *view, size_t line_size)
1803 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1809 view->line_size = line_size;
1814 update_view(struct view *view)
1816 char in_buffer[BUFSIZ];
1817 char out_buffer[BUFSIZ * 2];
1819 /* The number of lines to read. If too low it will cause too much
1820 * redrawing (and possible flickering), if too high responsiveness
1822 unsigned long lines = view->height;
1823 int redraw_from = -1;
1828 /* Only redraw if lines are visible. */
1829 if (view->offset + view->height >= view->lines)
1830 redraw_from = view->lines - view->offset;
1832 /* FIXME: This is probably not perfect for backgrounded views. */
1833 if (!realloc_lines(view, view->lines + lines))
1836 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1837 size_t linelen = strlen(line);
1840 line[linelen - 1] = 0;
1842 if (opt_iconv != ICONV_NONE) {
1844 size_t inlen = linelen;
1846 char *outbuf = out_buffer;
1847 size_t outlen = sizeof(out_buffer);
1851 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1852 if (ret != (size_t) -1) {
1854 linelen = strlen(out_buffer);
1858 if (!view->ops->read(view, line))
1868 lines = view->lines;
1869 for (digits = 0; lines; digits++)
1872 /* Keep the displayed view in sync with line number scaling. */
1873 if (digits != view->digits) {
1874 view->digits = digits;
1879 if (!view_is_displayed(view))
1882 if (view == VIEW(REQ_VIEW_TREE)) {
1883 /* Clear the view and redraw everything since the tree sorting
1884 * might have rearranged things. */
1887 } else if (redraw_from >= 0) {
1888 /* If this is an incremental update, redraw the previous line
1889 * since for commits some members could have changed when
1890 * loading the main view. */
1891 if (redraw_from > 0)
1894 /* Incrementally draw avoids flickering. */
1895 redraw_view_from(view, redraw_from);
1898 /* Update the title _after_ the redraw so that if the redraw picks up a
1899 * commit reference in view->ref it'll be available here. */
1900 update_view_title(view);
1903 if (ferror(view->pipe)) {
1904 report("Failed to read: %s", strerror(errno));
1907 } else if (feof(view->pipe)) {
1915 report("Allocation failure");
1927 static void open_help_view(struct view *view)
1930 int lines = ARRAY_SIZE(req_info) + 2;
1933 if (view->lines > 0)
1936 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1937 if (!req_info[i].request)
1940 view->line = calloc(lines, sizeof(*view->line));
1942 report("Allocation failure");
1946 view->ops->read(view, "Quick reference for tig keybindings:");
1948 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1951 if (!req_info[i].request) {
1952 view->ops->read(view, "");
1953 view->ops->read(view, req_info[i].help);
1957 key = get_key(req_info[i].request);
1958 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1961 view->ops->read(view, buf);
1966 OPEN_DEFAULT = 0, /* Use default view switching. */
1967 OPEN_SPLIT = 1, /* Split current view. */
1968 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1969 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1973 open_view(struct view *prev, enum request request, enum open_flags flags)
1975 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1976 bool split = !!(flags & OPEN_SPLIT);
1977 bool reload = !!(flags & OPEN_RELOAD);
1978 struct view *view = VIEW(request);
1979 int nviews = displayed_views();
1980 struct view *base_view = display[0];
1982 if (view == prev && nviews == 1 && !reload) {
1983 report("Already in %s view", view->name);
1987 if (view == VIEW(REQ_VIEW_HELP)) {
1988 open_help_view(view);
1990 } else if ((reload || strcmp(view->vid, view->id)) &&
1991 !begin_update(view)) {
1992 report("Failed to load %s view", view->name);
2001 /* Maximize the current view. */
2002 memset(display, 0, sizeof(display));
2004 display[current_view] = view;
2007 /* Resize the view when switching between split- and full-screen,
2008 * or when switching between two different full-screen views. */
2009 if (nviews != displayed_views() ||
2010 (nviews == 1 && base_view != display[0]))
2013 if (split && prev->lineno - prev->offset >= prev->height) {
2014 /* Take the title line into account. */
2015 int lines = prev->lineno - prev->offset - prev->height + 1;
2017 /* Scroll the view that was split if the current line is
2018 * outside the new limited view. */
2019 do_scroll_view(prev, lines, TRUE);
2022 if (prev && view != prev) {
2023 if (split && !backgrounded) {
2024 /* "Blur" the previous view. */
2025 update_view_title(prev);
2028 view->parent = prev;
2031 if (view->pipe && view->lines == 0) {
2032 /* Clear the old view and let the incremental updating refill
2041 /* If the view is backgrounded the above calls to report()
2042 * won't redraw the view title. */
2044 update_view_title(view);
2049 * User request switch noodle
2053 view_driver(struct view *view, enum request request)
2060 case REQ_MOVE_PAGE_UP:
2061 case REQ_MOVE_PAGE_DOWN:
2062 case REQ_MOVE_FIRST_LINE:
2063 case REQ_MOVE_LAST_LINE:
2064 move_view(view, request, TRUE);
2067 case REQ_SCROLL_LINE_DOWN:
2068 case REQ_SCROLL_LINE_UP:
2069 case REQ_SCROLL_PAGE_DOWN:
2070 case REQ_SCROLL_PAGE_UP:
2071 scroll_view(view, request);
2076 report("No file chosen, press 't' to open tree view");
2085 case REQ_VIEW_PAGER:
2086 open_view(view, request, OPEN_DEFAULT);
2091 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2093 if ((view == VIEW(REQ_VIEW_DIFF) &&
2094 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2095 (view == VIEW(REQ_VIEW_BLOB) &&
2096 view->parent == VIEW(REQ_VIEW_TREE))) {
2097 bool redraw = display[1] == view;
2099 view = view->parent;
2100 move_view(view, request, redraw);
2102 update_view_title(view);
2104 move_view(view, request, TRUE);
2111 report("Nothing to enter");
2114 return view->ops->enter(view, &view->line[view->lineno]);
2118 int nviews = displayed_views();
2119 int next_view = (current_view + 1) % nviews;
2121 if (next_view == current_view) {
2122 report("Only one view is displayed");
2126 current_view = next_view;
2127 /* Blur out the title of the previous view. */
2128 update_view_title(view);
2132 case REQ_TOGGLE_LINENO:
2133 opt_line_number = !opt_line_number;
2137 case REQ_TOGGLE_REV_GRAPH:
2138 opt_rev_graph = !opt_rev_graph;
2143 /* Always reload^Wrerun commands from the prompt. */
2144 open_view(view, opt_request, OPEN_RELOAD);
2148 case REQ_SEARCH_BACK:
2149 search_view(view, request, opt_search);
2154 find_next(view, request);
2157 case REQ_STOP_LOADING:
2158 for (i = 0; i < ARRAY_SIZE(views); i++) {
2161 report("Stopped loading the %s view", view->name),
2166 case REQ_SHOW_VERSION:
2167 report("%s (built %s)", VERSION, __DATE__);
2170 case REQ_SCREEN_RESIZE:
2173 case REQ_SCREEN_REDRAW:
2181 case REQ_VIEW_CLOSE:
2182 /* XXX: Mark closed views by letting view->parent point to the
2183 * view itself. Parents to closed view should never be
2186 view->parent->parent != view->parent) {
2187 memset(display, 0, sizeof(display));
2189 display[current_view] = view->parent;
2190 view->parent = view;
2200 /* An unknown key will show most commonly used commands. */
2201 report("Unknown key, press 'h' for help");
2214 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2216 char *text = line->data;
2217 enum line_type type = line->type;
2218 int textlen = strlen(text);
2221 wmove(view->win, lineno, 0);
2225 wchgat(view->win, -1, 0, type, NULL);
2228 attr = get_line_attr(type);
2229 wattrset(view->win, attr);
2231 if (opt_line_number || opt_tab_size < TABSIZE) {
2232 static char spaces[] = " ";
2233 int col_offset = 0, col = 0;
2235 if (opt_line_number) {
2236 unsigned long real_lineno = view->offset + lineno + 1;
2238 if (real_lineno == 1 ||
2239 (real_lineno % opt_num_interval) == 0) {
2240 wprintw(view->win, "%.*d", view->digits, real_lineno);
2243 waddnstr(view->win, spaces,
2244 MIN(view->digits, STRING_SIZE(spaces)));
2246 waddstr(view->win, ": ");
2247 col_offset = view->digits + 2;
2250 while (text && col_offset + col < view->width) {
2251 int cols_max = view->width - col_offset - col;
2255 if (*text == '\t') {
2257 assert(sizeof(spaces) > TABSIZE);
2259 cols = opt_tab_size - (col % opt_tab_size);
2262 text = strchr(text, '\t');
2263 cols = line ? text - pos : strlen(pos);
2266 waddnstr(view->win, pos, MIN(cols, cols_max));
2271 int col = 0, pos = 0;
2273 for (; pos < textlen && col < view->width; pos++, col++)
2274 if (text[pos] == '\t')
2275 col += TABSIZE - (col % TABSIZE) - 1;
2277 waddnstr(view->win, text, pos);
2284 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2286 char refbuf[SIZEOF_STR];
2290 if (!string_format(refbuf, "git describe %s", commit_id))
2293 pipe = popen(refbuf, "r");
2297 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2298 ref = chomp_string(ref);
2304 /* This is the only fatal call, since it can "corrupt" the buffer. */
2305 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2312 add_pager_refs(struct view *view, struct line *line)
2314 char buf[SIZEOF_STR];
2315 char *commit_id = line->data + STRING_SIZE("commit ");
2317 size_t bufpos = 0, refpos = 0;
2318 const char *sep = "Refs: ";
2319 bool is_tag = FALSE;
2321 assert(line->type == LINE_COMMIT);
2323 refs = get_refs(commit_id);
2325 if (view == VIEW(REQ_VIEW_DIFF))
2326 goto try_add_describe_ref;
2331 struct ref *ref = refs[refpos];
2332 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2334 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2339 } while (refs[refpos++]->next);
2341 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2342 try_add_describe_ref:
2343 /* Add <tag>-g<commit_id> "fake" reference. */
2344 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2351 if (!realloc_lines(view, view->line_size + 1))
2354 line = &view->line[view->lines];
2355 line->data = strdup(buf);
2359 line->type = LINE_PP_REFS;
2364 pager_read(struct view *view, char *data)
2366 struct line *line = &view->line[view->lines];
2368 line->data = strdup(data);
2372 line->type = get_line_type(line->data);
2375 if (line->type == LINE_COMMIT &&
2376 (view == VIEW(REQ_VIEW_DIFF) ||
2377 view == VIEW(REQ_VIEW_LOG)))
2378 add_pager_refs(view, line);
2384 pager_enter(struct view *view, struct line *line)
2388 if (line->type == LINE_COMMIT &&
2389 (view == VIEW(REQ_VIEW_LOG) ||
2390 view == VIEW(REQ_VIEW_PAGER))) {
2391 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2395 /* Always scroll the view even if it was split. That way
2396 * you can use Enter to scroll through the log view and
2397 * split open each commit diff. */
2398 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2400 /* FIXME: A minor workaround. Scrolling the view will call report("")
2401 * but if we are scrolling a non-current view this won't properly
2402 * update the view title. */
2404 update_view_title(view);
2410 pager_grep(struct view *view, struct line *line)
2413 char *text = line->data;
2418 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2425 pager_select(struct view *view, struct line *line)
2427 if (line->type == LINE_COMMIT) {
2428 char *text = line->data;
2430 string_copy(view->ref, text + STRING_SIZE("commit "));
2431 string_copy(ref_commit, view->ref);
2435 static struct view_ops pager_ops = {
2449 /* Parse output from git ls-tree:
2451 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2452 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2453 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2454 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2457 #define SIZEOF_TREE_ATTR \
2458 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2460 #define TREE_UP_FORMAT "040000 tree %s\t.."
2463 tree_compare_entry(enum line_type type1, char *name1,
2464 enum line_type type2, char *name2)
2466 if (type1 != type2) {
2467 if (type1 == LINE_TREE_DIR)
2472 return strcmp(name1, name2);
2476 tree_read(struct view *view, char *text)
2478 size_t textlen = strlen(text);
2479 char buf[SIZEOF_STR];
2481 enum line_type type;
2482 bool first_read = view->lines == 0;
2484 if (textlen <= SIZEOF_TREE_ATTR)
2487 type = text[STRING_SIZE("100644 ")] == 't'
2488 ? LINE_TREE_DIR : LINE_TREE_FILE;
2491 /* Add path info line */
2492 if (string_format(buf, "Directory path /%s", opt_path) &&
2493 realloc_lines(view, view->line_size + 1) &&
2494 pager_read(view, buf))
2495 view->line[view->lines - 1].type = LINE_DEFAULT;
2499 /* Insert "link" to parent directory. */
2501 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2502 realloc_lines(view, view->line_size + 1) &&
2503 pager_read(view, buf))
2504 view->line[view->lines - 1].type = LINE_TREE_DIR;
2509 /* Strip the path part ... */
2511 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2512 size_t striplen = strlen(opt_path);
2513 char *path = text + SIZEOF_TREE_ATTR;
2515 if (pathlen > striplen)
2516 memmove(path, path + striplen,
2517 pathlen - striplen + 1);
2520 /* Skip "Directory ..." and ".." line. */
2521 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2522 struct line *line = &view->line[pos];
2523 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2524 char *path2 = text + SIZEOF_TREE_ATTR;
2525 int cmp = tree_compare_entry(line->type, path1, type, path2);
2530 text = strdup(text);
2534 if (view->lines > pos)
2535 memmove(&view->line[pos + 1], &view->line[pos],
2536 (view->lines - pos) * sizeof(*line));
2538 line = &view->line[pos];
2545 if (!pager_read(view, text))
2548 /* Move the current line to the first tree entry. */
2552 view->line[view->lines - 1].type = type;
2557 tree_enter(struct view *view, struct line *line)
2559 enum open_flags flags = OPEN_DEFAULT;
2560 char *data = line->data;
2561 enum request request;
2563 switch (line->type) {
2565 /* Depending on whether it is a subdir or parent (updir?) link
2566 * mangle the path buffer. */
2567 if (line == &view->line[1] && *opt_path) {
2568 size_t path_len = strlen(opt_path);
2569 char *dirsep = opt_path + path_len - 1;
2571 while (dirsep > opt_path && dirsep[-1] != '/')
2577 size_t pathlen = strlen(opt_path);
2578 size_t origlen = pathlen;
2579 char *basename = data + SIZEOF_TREE_ATTR;
2581 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2582 opt_path[origlen] = 0;
2587 /* Trees and subtrees share the same ID, so they are not not
2588 * unique like blobs. */
2589 flags |= OPEN_RELOAD;
2590 request = REQ_VIEW_TREE;
2593 case LINE_TREE_FILE:
2594 /* This causes the blob view to become split, and not having it
2595 * in the tree dir case will make the blob view automatically
2596 * disappear when moving to a different directory. */
2597 flags |= OPEN_SPLIT;
2598 request = REQ_VIEW_BLOB;
2605 open_view(view, request, flags);
2607 if (!VIEW(request)->pipe)
2610 /* For tree views insert the path to the parent as the first line. */
2611 if (request == REQ_VIEW_BLOB) {
2612 /* Mirror what is showed in the title bar. */
2613 string_ncopy(ref_blob, data + STRING_SIZE("100644 blob "), 40);
2614 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2622 tree_select(struct view *view, struct line *line)
2624 if (line->type == LINE_TREE_DIR || line->type == LINE_TREE_FILE) {
2625 char *text = line->data;
2627 string_ncopy(view->ref, text + STRING_SIZE("100644 blob "), 40);
2628 string_copy(ref_blob, view->ref);
2632 static struct view_ops tree_ops = {
2642 blob_read(struct view *view, char *line)
2644 bool state = pager_read(view, line);
2647 view->line[view->lines - 1].type = LINE_DEFAULT;
2652 static struct view_ops blob_ops = {
2667 char id[41]; /* SHA1 ID. */
2668 char title[75]; /* First line of the commit message. */
2669 char author[75]; /* Author of the commit. */
2670 struct tm time; /* Date from the author ident. */
2671 struct ref **refs; /* Repository references. */
2672 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2673 size_t graph_size; /* The width of the graph array. */
2677 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2679 char buf[DATE_COLS + 1];
2680 struct commit *commit = line->data;
2681 enum line_type type;
2687 if (!*commit->author)
2690 wmove(view->win, lineno, col);
2694 wattrset(view->win, get_line_attr(type));
2695 wchgat(view->win, -1, 0, type, NULL);
2698 type = LINE_MAIN_COMMIT;
2699 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2702 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2703 waddnstr(view->win, buf, timelen);
2704 waddstr(view->win, " ");
2707 wmove(view->win, lineno, col);
2708 if (type != LINE_CURSOR)
2709 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2712 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2714 authorlen = strlen(commit->author);
2715 if (authorlen > AUTHOR_COLS - 2) {
2716 authorlen = AUTHOR_COLS - 2;
2722 waddnstr(view->win, commit->author, authorlen);
2723 if (type != LINE_CURSOR)
2724 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2725 waddch(view->win, '~');
2727 waddstr(view->win, commit->author);
2731 if (type != LINE_CURSOR)
2732 wattrset(view->win, A_NORMAL);
2734 if (opt_rev_graph && commit->graph_size) {
2737 wmove(view->win, lineno, col);
2738 /* Using waddch() instead of waddnstr() ensures that
2739 * they'll be rendered correctly for the cursor line. */
2740 for (i = 0; i < commit->graph_size; i++)
2741 waddch(view->win, commit->graph[i]);
2743 col += commit->graph_size + 1;
2746 wmove(view->win, lineno, col);
2752 if (type == LINE_CURSOR)
2754 else if (commit->refs[i]->tag)
2755 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2757 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2758 waddstr(view->win, "[");
2759 waddstr(view->win, commit->refs[i]->name);
2760 waddstr(view->win, "]");
2761 if (type != LINE_CURSOR)
2762 wattrset(view->win, A_NORMAL);
2763 waddstr(view->win, " ");
2764 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2765 } while (commit->refs[i++]->next);
2768 if (type != LINE_CURSOR)
2769 wattrset(view->win, get_line_attr(type));
2772 int titlelen = strlen(commit->title);
2774 if (col + titlelen > view->width)
2775 titlelen = view->width - col;
2777 waddnstr(view->win, commit->title, titlelen);
2783 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2785 main_read(struct view *view, char *line)
2787 enum line_type type = get_line_type(line);
2788 struct commit *commit = view->lines
2789 ? view->line[view->lines - 1].data : NULL;
2793 commit = calloc(1, sizeof(struct commit));
2797 line += STRING_SIZE("commit ");
2799 view->line[view->lines++].data = commit;
2800 string_copy(commit->id, line);
2801 commit->refs = get_refs(commit->id);
2802 commit->graph[commit->graph_size++] = ACS_LTEE;
2807 char *ident = line + STRING_SIZE("author ");
2808 char *end = strchr(ident, '<');
2814 char *email = end + 1;
2816 for (; end > ident && isspace(end[-1]); end--) ;
2818 if (end == ident && *email) {
2820 end = strchr(ident, '>');
2821 for (; end > ident && isspace(end[-1]); end--) ;
2826 /* End is NULL or ident meaning there's no author. */
2830 string_copy(commit->author, ident);
2832 /* Parse epoch and timezone */
2834 char *secs = strchr(end + 1, '>');
2838 if (!secs || secs[1] != ' ')
2842 time = (time_t) atol(secs);
2843 zone = strchr(secs, ' ');
2844 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2848 tz = ('0' - zone[1]) * 60 * 60 * 10;
2849 tz += ('0' - zone[2]) * 60 * 60;
2850 tz += ('0' - zone[3]) * 60;
2851 tz += ('0' - zone[4]) * 60;
2858 gmtime_r(&time, &commit->time);
2866 /* Fill in the commit title if it has not already been set. */
2867 if (commit->title[0])
2870 /* Require titles to start with a non-space character at the
2871 * offset used by git log. */
2872 /* FIXME: More gracefull handling of titles; append "..." to
2873 * shortened titles, etc. */
2874 if (strncmp(line, " ", 4) ||
2878 string_copy(commit->title, line + 4);
2885 main_enter(struct view *view, struct line *line)
2887 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2889 open_view(view, REQ_VIEW_DIFF, flags);
2894 main_grep(struct view *view, struct line *line)
2896 struct commit *commit = line->data;
2897 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2898 char buf[DATE_COLS + 1];
2901 for (state = S_TITLE; state < S_END; state++) {
2905 case S_TITLE: text = commit->title; break;
2906 case S_AUTHOR: text = commit->author; break;
2908 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2917 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2925 main_select(struct view *view, struct line *line)
2927 struct commit *commit = line->data;
2929 string_copy(view->ref, commit->id);
2930 string_copy(ref_commit, view->ref);
2933 static struct view_ops main_ops = {
2944 * Unicode / UTF-8 handling
2946 * NOTE: Much of the following code for dealing with unicode is derived from
2947 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2948 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2951 /* I've (over)annotated a lot of code snippets because I am not entirely
2952 * confident that the approach taken by this small UTF-8 interface is correct.
2956 unicode_width(unsigned long c)
2959 (c <= 0x115f /* Hangul Jamo */
2962 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2964 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2965 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2966 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2967 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2968 || (c >= 0xffe0 && c <= 0xffe6)
2969 || (c >= 0x20000 && c <= 0x2fffd)
2970 || (c >= 0x30000 && c <= 0x3fffd)))
2976 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2977 * Illegal bytes are set one. */
2978 static const unsigned char utf8_bytes[256] = {
2979 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,
2980 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,
2981 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,
2982 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,
2983 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,
2984 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,
2985 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,
2986 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,
2989 /* Decode UTF-8 multi-byte representation into a unicode character. */
2990 static inline unsigned long
2991 utf8_to_unicode(const char *string, size_t length)
2993 unsigned long unicode;
2997 unicode = string[0];
3000 unicode = (string[0] & 0x1f) << 6;
3001 unicode += (string[1] & 0x3f);
3004 unicode = (string[0] & 0x0f) << 12;
3005 unicode += ((string[1] & 0x3f) << 6);
3006 unicode += (string[2] & 0x3f);
3009 unicode = (string[0] & 0x0f) << 18;
3010 unicode += ((string[1] & 0x3f) << 12);
3011 unicode += ((string[2] & 0x3f) << 6);
3012 unicode += (string[3] & 0x3f);
3015 unicode = (string[0] & 0x0f) << 24;
3016 unicode += ((string[1] & 0x3f) << 18);
3017 unicode += ((string[2] & 0x3f) << 12);
3018 unicode += ((string[3] & 0x3f) << 6);
3019 unicode += (string[4] & 0x3f);
3022 unicode = (string[0] & 0x01) << 30;
3023 unicode += ((string[1] & 0x3f) << 24);
3024 unicode += ((string[2] & 0x3f) << 18);
3025 unicode += ((string[3] & 0x3f) << 12);
3026 unicode += ((string[4] & 0x3f) << 6);
3027 unicode += (string[5] & 0x3f);
3030 die("Invalid unicode length");
3033 /* Invalid characters could return the special 0xfffd value but NUL
3034 * should be just as good. */
3035 return unicode > 0xffff ? 0 : unicode;
3038 /* Calculates how much of string can be shown within the given maximum width
3039 * and sets trimmed parameter to non-zero value if all of string could not be
3042 * Additionally, adds to coloffset how many many columns to move to align with
3043 * the expected position. Takes into account how multi-byte and double-width
3044 * characters will effect the cursor position.
3046 * Returns the number of bytes to output from string to satisfy max_width. */
3048 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3050 const char *start = string;
3051 const char *end = strchr(string, '\0');
3057 while (string < end) {
3058 int c = *(unsigned char *) string;
3059 unsigned char bytes = utf8_bytes[c];
3061 unsigned long unicode;
3063 if (string + bytes > end)
3066 /* Change representation to figure out whether
3067 * it is a single- or double-width character. */
3069 unicode = utf8_to_unicode(string, bytes);
3070 /* FIXME: Graceful handling of invalid unicode character. */
3074 ucwidth = unicode_width(unicode);
3076 if (width > max_width) {
3081 /* The column offset collects the differences between the
3082 * number of bytes encoding a character and the number of
3083 * columns will be used for rendering said character.
3085 * So if some character A is encoded in 2 bytes, but will be
3086 * represented on the screen using only 1 byte this will and up
3087 * adding 1 to the multi-byte column offset.
3089 * Assumes that no double-width character can be encoding in
3090 * less than two bytes. */
3091 if (bytes > ucwidth)
3092 mbwidth += bytes - ucwidth;
3097 *coloffset += mbwidth;
3099 return string - start;
3107 /* Whether or not the curses interface has been initialized. */
3108 static bool cursed = FALSE;
3110 /* The status window is used for polling keystrokes. */
3111 static WINDOW *status_win;
3113 /* Update status and title window. */
3115 report(const char *msg, ...)
3117 static bool empty = TRUE;
3118 struct view *view = display[current_view];
3120 if (!empty || *msg) {
3123 va_start(args, msg);
3126 wmove(status_win, 0, 0);
3128 vwprintw(status_win, msg, args);
3133 wrefresh(status_win);
3138 update_view_title(view);
3139 update_display_cursor();
3142 /* Controls when nodelay should be in effect when polling user input. */
3144 set_nonblocking_input(bool loading)
3146 static unsigned int loading_views;
3148 if ((loading == FALSE && loading_views-- == 1) ||
3149 (loading == TRUE && loading_views++ == 0))
3150 nodelay(status_win, loading);
3158 /* Initialize the curses library */
3159 if (isatty(STDIN_FILENO)) {
3160 cursed = !!initscr();
3162 /* Leave stdin and stdout alone when acting as a pager. */
3163 FILE *io = fopen("/dev/tty", "r+");
3166 die("Failed to open /dev/tty");
3167 cursed = !!newterm(NULL, io, io);
3171 die("Failed to initialize curses");
3173 nonl(); /* Tell curses not to do NL->CR/NL on output */
3174 cbreak(); /* Take input chars one at a time, no wait for \n */
3175 noecho(); /* Don't echo input */
3176 leaveok(stdscr, TRUE);
3181 getmaxyx(stdscr, y, x);
3182 status_win = newwin(1, 0, y - 1, 0);
3184 die("Failed to create status window");
3186 /* Enable keyboard mapping */
3187 keypad(status_win, TRUE);
3188 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3192 read_prompt(const char *prompt)
3194 enum { READING, STOP, CANCEL } status = READING;
3195 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3198 while (status == READING) {
3202 foreach_view (view, i)
3205 report("%s%.*s", prompt, pos, buf);
3206 /* Refresh, accept single keystroke of input */
3207 key = wgetch(status_win);
3212 status = pos ? STOP : CANCEL;
3230 if (pos >= sizeof(buf)) {
3231 report("Input string too long");
3236 buf[pos++] = (char) key;
3240 if (status == CANCEL) {
3241 /* Clear the status window */
3252 * Repository references
3255 static struct ref *refs;
3256 static size_t refs_size;
3258 /* Id <-> ref store */
3259 static struct ref ***id_refs;
3260 static size_t id_refs_size;
3262 static struct ref **
3265 struct ref ***tmp_id_refs;
3266 struct ref **ref_list = NULL;
3267 size_t ref_list_size = 0;
3270 for (i = 0; i < id_refs_size; i++)
3271 if (!strcmp(id, id_refs[i][0]->id))
3274 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3278 id_refs = tmp_id_refs;
3280 for (i = 0; i < refs_size; i++) {
3283 if (strcmp(id, refs[i].id))
3286 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3294 if (ref_list_size > 0)
3295 ref_list[ref_list_size - 1]->next = 1;
3296 ref_list[ref_list_size] = &refs[i];
3298 /* XXX: The properties of the commit chains ensures that we can
3299 * safely modify the shared ref. The repo references will
3300 * always be similar for the same id. */
3301 ref_list[ref_list_size]->next = 0;
3306 id_refs[id_refs_size++] = ref_list;
3312 read_ref(char *id, int idlen, char *name, int namelen)
3317 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3318 /* Commits referenced by tags has "^{}" appended. */
3319 if (name[namelen - 1] != '}')
3322 while (namelen > 0 && name[namelen] != '^')
3326 namelen -= STRING_SIZE("refs/tags/");
3327 name += STRING_SIZE("refs/tags/");
3329 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3330 namelen -= STRING_SIZE("refs/heads/");
3331 name += STRING_SIZE("refs/heads/");
3333 } else if (!strcmp(name, "HEAD")) {
3337 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3341 ref = &refs[refs_size++];
3342 ref->name = malloc(namelen + 1);
3346 strncpy(ref->name, name, namelen);
3347 ref->name[namelen] = 0;
3349 string_copy(ref->id, id);
3357 const char *cmd_env = getenv("TIG_LS_REMOTE");
3358 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3360 return read_properties(popen(cmd, "r"), "\t", read_ref);
3364 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3366 if (!strcmp(name, "i18n.commitencoding"))
3367 string_copy(opt_encoding, value);
3373 load_repo_config(void)
3375 return read_properties(popen("git repo-config --list", "r"),
3376 "=", read_repo_config_option);
3380 read_properties(FILE *pipe, const char *separators,
3381 int (*read_property)(char *, int, char *, int))
3383 char buffer[BUFSIZ];
3390 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3395 name = chomp_string(name);
3396 namelen = strcspn(name, separators);
3398 if (name[namelen]) {
3400 value = chomp_string(name + namelen + 1);
3401 valuelen = strlen(value);
3408 state = read_property(name, namelen, value, valuelen);
3411 if (state != ERR && ferror(pipe))
3424 static void __NORETURN
3427 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3433 static void __NORETURN
3434 die(const char *err, ...)
3440 va_start(args, err);
3441 fputs("tig: ", stderr);
3442 vfprintf(stderr, err, args);
3443 fputs("\n", stderr);
3450 main(int argc, char *argv[])
3453 enum request request;
3456 signal(SIGINT, quit);
3458 if (setlocale(LC_ALL, "")) {
3459 string_copy(opt_codeset, nl_langinfo(CODESET));
3462 if (load_options() == ERR)
3463 die("Failed to load user config.");
3465 /* Load the repo config file so options can be overwritten from
3466 * the command line. */
3467 if (load_repo_config() == ERR)
3468 die("Failed to load repo config.");
3470 if (!parse_options(argc, argv))
3473 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3474 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3475 if (opt_iconv == ICONV_NONE)
3476 die("Failed to initialize character set conversion");
3479 if (load_refs() == ERR)
3480 die("Failed to load refs.");
3482 /* Require a git repository unless when running in pager mode. */
3483 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3484 die("Not a git repository");
3486 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3487 view->cmd_env = getenv(view->cmd_env);
3489 request = opt_request;
3493 while (view_driver(display[current_view], request)) {
3497 foreach_view (view, i)
3500 /* Refresh, accept single keystroke of input */
3501 key = wgetch(status_win);
3503 request = get_keybinding(display[current_view]->keymap, key);
3505 /* Some low-level request handling. This keeps access to
3506 * status_win restricted. */
3510 char *cmd = read_prompt(":");
3512 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3513 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3514 opt_request = REQ_VIEW_DIFF;
3516 opt_request = REQ_VIEW_PAGER;
3525 case REQ_SEARCH_BACK:
3527 const char *prompt = request == REQ_SEARCH
3529 char *search = read_prompt(prompt);
3532 string_copy(opt_search, search);
3537 case REQ_SCREEN_RESIZE:
3541 getmaxyx(stdscr, height, width);
3543 /* Resize the status view and let the view driver take
3544 * care of resizing the displayed views. */
3545 wresize(status_win, 1, width);
3546 mvwin(status_win, height - 1, 0);
3547 wrefresh(status_win);