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 "unknown-version"
30 #include <sys/types.h>
44 #define __NORETURN __attribute__((__noreturn__))
49 static void __NORETURN die(const char *err, ...);
50 static void report(const char *msg, ...);
51 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
52 static void set_nonblocking_input(bool loading);
53 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
55 #define ABS(x) ((x) >= 0 ? (x) : -(x))
56 #define MIN(x, y) ((x) < (y) ? (x) : (y))
58 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
59 #define STRING_SIZE(x) (sizeof(x) - 1)
61 #define SIZEOF_STR 1024 /* Default string size. */
62 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
63 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
67 #define REVGRAPH_INIT 'I'
68 #define REVGRAPH_MERGE 'M'
69 #define REVGRAPH_BRANCH '+'
70 #define REVGRAPH_COMMIT '*'
71 #define REVGRAPH_LINE '|'
73 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
75 /* This color name can be used to refer to the default term colors. */
76 #define COLOR_DEFAULT (-1)
78 #define ICONV_NONE ((iconv_t) -1)
80 /* The format and size of the date column in the main view. */
81 #define DATE_FORMAT "%Y-%m-%d %H:%M"
82 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
84 #define AUTHOR_COLS 20
86 /* The default interval between line numbers. */
87 #define NUMBER_INTERVAL 1
91 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
93 #define TIG_LS_REMOTE \
94 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
96 #define TIG_DIFF_CMD \
97 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
100 "git log --cc --stat -n100 %s 2>/dev/null"
102 #define TIG_MAIN_CMD \
103 "git log --topo-order --pretty=raw %s 2>/dev/null"
105 #define TIG_TREE_CMD \
108 #define TIG_BLOB_CMD \
109 "git cat-file blob %s"
111 /* XXX: Needs to be defined to the empty string. */
112 #define TIG_HELP_CMD ""
113 #define TIG_PAGER_CMD ""
114 #define TIG_STATUS_CMD ""
116 /* Some ascii-shorthands fitted into the ncurses namespace. */
118 #define KEY_RETURN '\r'
123 char *name; /* Ref name; tag or head names are shortened. */
124 char id[SIZEOF_REV]; /* Commit SHA1 ID */
125 unsigned int tag:1; /* Is it a tag? */
126 unsigned int remote:1; /* Is it a remote ref? */
127 unsigned int next:1; /* For ref lists: are there more refs? */
130 static struct ref **get_refs(char *id);
139 set_from_int_map(struct int_map *map, size_t map_size,
140 int *value, const char *name, int namelen)
145 for (i = 0; i < map_size; i++)
146 if (namelen == map[i].namelen &&
147 !strncasecmp(name, map[i].name, namelen)) {
148 *value = map[i].value;
161 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
163 if (srclen > dstlen - 1)
166 strncpy(dst, src, srclen);
170 /* Shorthands for safely copying into a fixed buffer. */
172 #define string_copy(dst, src) \
173 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
175 #define string_ncopy(dst, src, srclen) \
176 string_ncopy_do(dst, sizeof(dst), src, srclen)
178 #define string_copy_rev(dst, src) \
179 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
181 #define string_add(dst, from, src) \
182 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
185 chomp_string(char *name)
189 while (isspace(*name))
192 namelen = strlen(name) - 1;
193 while (namelen > 0 && isspace(name[namelen]))
200 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
203 size_t pos = bufpos ? *bufpos : 0;
206 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
212 return pos >= bufsize ? FALSE : TRUE;
215 #define string_format(buf, fmt, args...) \
216 string_nformat(buf, sizeof(buf), NULL, fmt, args)
218 #define string_format_from(buf, from, fmt, args...) \
219 string_nformat(buf, sizeof(buf), from, fmt, args)
222 string_enum_compare(const char *str1, const char *str2, int len)
226 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
228 /* Diff-Header == DIFF_HEADER */
229 for (i = 0; i < len; i++) {
230 if (toupper(str1[i]) == toupper(str2[i]))
233 if (string_enum_sep(str1[i]) &&
234 string_enum_sep(str2[i]))
237 return str1[i] - str2[i];
245 * NOTE: The following is a slightly modified copy of the git project's shell
246 * quoting routines found in the quote.c file.
248 * Help to copy the thing properly quoted for the shell safety. any single
249 * quote is replaced with '\'', any exclamation point is replaced with '\!',
250 * and the whole thing is enclosed in a
253 * original sq_quote result
254 * name ==> name ==> 'name'
255 * a b ==> a b ==> 'a b'
256 * a'b ==> a'\''b ==> 'a'\''b'
257 * a!b ==> a'\!'b ==> 'a'\!'b'
261 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
265 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
268 while ((c = *src++)) {
269 if (c == '\'' || c == '!') {
280 if (bufsize < SIZEOF_STR)
292 /* XXX: Keep the view request first and in sync with views[]. */ \
293 REQ_GROUP("View switching") \
294 REQ_(VIEW_MAIN, "Show main view"), \
295 REQ_(VIEW_DIFF, "Show diff view"), \
296 REQ_(VIEW_LOG, "Show log view"), \
297 REQ_(VIEW_TREE, "Show tree view"), \
298 REQ_(VIEW_BLOB, "Show blob view"), \
299 REQ_(VIEW_HELP, "Show help page"), \
300 REQ_(VIEW_PAGER, "Show pager view"), \
301 REQ_(VIEW_STATUS, "Show status view"), \
303 REQ_GROUP("View manipulation") \
304 REQ_(ENTER, "Enter current line and scroll"), \
305 REQ_(NEXT, "Move to next"), \
306 REQ_(PREVIOUS, "Move to previous"), \
307 REQ_(VIEW_NEXT, "Move focus to next view"), \
308 REQ_(VIEW_CLOSE, "Close the current view"), \
309 REQ_(QUIT, "Close all views and quit"), \
311 REQ_GROUP("Cursor navigation") \
312 REQ_(MOVE_UP, "Move cursor one line up"), \
313 REQ_(MOVE_DOWN, "Move cursor one line down"), \
314 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
315 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
316 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
317 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
319 REQ_GROUP("Scrolling") \
320 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
321 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
322 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
323 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
325 REQ_GROUP("Searching") \
326 REQ_(SEARCH, "Search the view"), \
327 REQ_(SEARCH_BACK, "Search backwards in the view"), \
328 REQ_(FIND_NEXT, "Find next search match"), \
329 REQ_(FIND_PREV, "Find previous search match"), \
332 REQ_(NONE, "Do nothing"), \
333 REQ_(PROMPT, "Bring up the prompt"), \
334 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
335 REQ_(SCREEN_RESIZE, "Resize the screen"), \
336 REQ_(SHOW_VERSION, "Show version information"), \
337 REQ_(STOP_LOADING, "Stop all loading views"), \
338 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
339 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
340 REQ_(STATUS_UPDATE, "Update file status") \
343 /* User action requests. */
345 #define REQ_GROUP(help)
346 #define REQ_(req, help) REQ_##req
348 /* Offset all requests to avoid conflicts with ncurses getch values. */
349 REQ_OFFSET = KEY_MAX + 1,
357 struct request_info {
358 enum request request;
364 static struct request_info req_info[] = {
365 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
366 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
373 get_request(const char *name)
375 int namelen = strlen(name);
378 for (i = 0; i < ARRAY_SIZE(req_info); i++)
379 if (req_info[i].namelen == namelen &&
380 !string_enum_compare(req_info[i].name, name, namelen))
381 return req_info[i].request;
391 static const char usage[] =
392 "tig " VERSION " (" __DATE__ ")\n"
394 "Usage: tig [options]\n"
395 " or: tig [options] [--] [git log options]\n"
396 " or: tig [options] log [git log options]\n"
397 " or: tig [options] diff [git diff options]\n"
398 " or: tig [options] show [git show options]\n"
399 " or: tig [options] < [git command output]\n"
402 " -l Start up in log view\n"
403 " -d Start up in diff view\n"
404 " -S Start up in status view\n"
405 " -n[I], --line-number[=I] Show line numbers with given interval\n"
406 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
407 " -- Mark end of tig options\n"
408 " -v, --version Show version and exit\n"
409 " -h, --help Show help message and exit\n";
411 /* Option and state variables. */
412 static bool opt_line_number = FALSE;
413 static bool opt_rev_graph = FALSE;
414 static int opt_num_interval = NUMBER_INTERVAL;
415 static int opt_tab_size = TABSIZE;
416 static enum request opt_request = REQ_VIEW_MAIN;
417 static char opt_cmd[SIZEOF_STR] = "";
418 static char opt_path[SIZEOF_STR] = "";
419 static FILE *opt_pipe = NULL;
420 static char opt_encoding[20] = "UTF-8";
421 static bool opt_utf8 = TRUE;
422 static char opt_codeset[20] = "UTF-8";
423 static iconv_t opt_iconv = ICONV_NONE;
424 static char opt_search[SIZEOF_STR] = "";
425 static char opt_cdup[SIZEOF_STR] = "";
426 static char opt_git_dir[SIZEOF_STR] = "";
434 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
444 int namelen = strlen(name);
448 if (strncmp(opt, name, namelen))
451 if (opt[namelen] == '=')
452 value = opt + namelen + 1;
455 if (!short_name || opt[1] != short_name)
460 va_start(args, type);
461 if (type == OPT_INT) {
462 number = va_arg(args, int *);
464 *number = atoi(value);
471 /* Returns the index of log or diff command or -1 to exit. */
473 parse_options(int argc, char *argv[])
477 for (i = 1; i < argc; i++) {
480 if (!strcmp(opt, "log") ||
481 !strcmp(opt, "diff") ||
482 !strcmp(opt, "show")) {
483 opt_request = opt[0] == 'l'
484 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
488 if (opt[0] && opt[0] != '-')
491 if (!strcmp(opt, "-l")) {
492 opt_request = REQ_VIEW_LOG;
496 if (!strcmp(opt, "-d")) {
497 opt_request = REQ_VIEW_DIFF;
501 if (!strcmp(opt, "-S")) {
502 opt_request = REQ_VIEW_STATUS;
506 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
507 opt_line_number = TRUE;
511 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
512 opt_tab_size = MIN(opt_tab_size, TABSIZE);
516 if (check_option(opt, 'v', "version", OPT_NONE)) {
517 printf("tig version %s\n", VERSION);
521 if (check_option(opt, 'h', "help", OPT_NONE)) {
526 if (!strcmp(opt, "--")) {
531 die("unknown option '%s'\n\n%s", opt, usage);
534 if (!isatty(STDIN_FILENO)) {
535 opt_request = REQ_VIEW_PAGER;
538 } else if (i < argc) {
541 if (opt_request == REQ_VIEW_MAIN)
542 /* XXX: This is vulnerable to the user overriding
543 * options required for the main view parser. */
544 string_copy(opt_cmd, "git log --pretty=raw");
546 string_copy(opt_cmd, "git");
547 buf_size = strlen(opt_cmd);
549 while (buf_size < sizeof(opt_cmd) && i < argc) {
550 opt_cmd[buf_size++] = ' ';
551 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
554 if (buf_size >= sizeof(opt_cmd))
555 die("command too long");
557 opt_cmd[buf_size] = 0;
560 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
568 * Line-oriented content detection.
572 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
573 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
574 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
575 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
576 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
577 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
578 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
579 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
580 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
583 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
584 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
585 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
586 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
587 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
588 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
589 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
590 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
591 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
592 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
593 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
594 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
595 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
596 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
597 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
598 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
599 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
600 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
601 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
602 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
603 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
604 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
605 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
606 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
607 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
608 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
609 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
610 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
611 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
612 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
613 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
614 LINE(STAT_SECTION, "", COLOR_DEFAULT, COLOR_BLUE, A_BOLD), \
615 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
616 LINE(STAT_STAGED, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
617 LINE(STAT_UNSTAGED,"", COLOR_YELLOW, COLOR_DEFAULT, 0), \
618 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0)
621 #define LINE(type, line, fg, bg, attr) \
628 const char *name; /* Option name. */
629 int namelen; /* Size of option name. */
630 const char *line; /* The start of line to match. */
631 int linelen; /* Size of string to match. */
632 int fg, bg, attr; /* Color and text attributes for the lines. */
635 static struct line_info line_info[] = {
636 #define LINE(type, line, fg, bg, attr) \
637 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
642 static enum line_type
643 get_line_type(char *line)
645 int linelen = strlen(line);
648 for (type = 0; type < ARRAY_SIZE(line_info); type++)
649 /* Case insensitive search matches Signed-off-by lines better. */
650 if (linelen >= line_info[type].linelen &&
651 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
658 get_line_attr(enum line_type type)
660 assert(type < ARRAY_SIZE(line_info));
661 return COLOR_PAIR(type) | line_info[type].attr;
664 static struct line_info *
665 get_line_info(char *name, int namelen)
669 for (type = 0; type < ARRAY_SIZE(line_info); type++)
670 if (namelen == line_info[type].namelen &&
671 !string_enum_compare(line_info[type].name, name, namelen))
672 return &line_info[type];
680 int default_bg = COLOR_BLACK;
681 int default_fg = COLOR_WHITE;
686 if (use_default_colors() != ERR) {
691 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
692 struct line_info *info = &line_info[type];
693 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
694 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
696 init_pair(type, fg, bg);
704 unsigned int selected:1;
706 void *data; /* User data */
716 enum request request;
717 struct keybinding *next;
720 static struct keybinding default_keybindings[] = {
722 { 'm', REQ_VIEW_MAIN },
723 { 'd', REQ_VIEW_DIFF },
724 { 'l', REQ_VIEW_LOG },
725 { 't', REQ_VIEW_TREE },
726 { 'f', REQ_VIEW_BLOB },
727 { 'p', REQ_VIEW_PAGER },
728 { 'h', REQ_VIEW_HELP },
729 { 'S', REQ_VIEW_STATUS },
731 /* View manipulation */
732 { 'q', REQ_VIEW_CLOSE },
733 { KEY_TAB, REQ_VIEW_NEXT },
734 { KEY_RETURN, REQ_ENTER },
735 { KEY_UP, REQ_PREVIOUS },
736 { KEY_DOWN, REQ_NEXT },
738 /* Cursor navigation */
739 { 'k', REQ_MOVE_UP },
740 { 'j', REQ_MOVE_DOWN },
741 { KEY_HOME, REQ_MOVE_FIRST_LINE },
742 { KEY_END, REQ_MOVE_LAST_LINE },
743 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
744 { ' ', REQ_MOVE_PAGE_DOWN },
745 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
746 { 'b', REQ_MOVE_PAGE_UP },
747 { '-', REQ_MOVE_PAGE_UP },
750 { KEY_IC, REQ_SCROLL_LINE_UP },
751 { KEY_DC, REQ_SCROLL_LINE_DOWN },
752 { 'w', REQ_SCROLL_PAGE_UP },
753 { 's', REQ_SCROLL_PAGE_DOWN },
757 { '?', REQ_SEARCH_BACK },
758 { 'n', REQ_FIND_NEXT },
759 { 'N', REQ_FIND_PREV },
763 { 'z', REQ_STOP_LOADING },
764 { 'v', REQ_SHOW_VERSION },
765 { 'r', REQ_SCREEN_REDRAW },
766 { '.', REQ_TOGGLE_LINENO },
767 { 'g', REQ_TOGGLE_REV_GRAPH },
769 { 'u', REQ_STATUS_UPDATE },
771 /* Using the ncurses SIGWINCH handler. */
772 { KEY_RESIZE, REQ_SCREEN_RESIZE },
775 #define KEYMAP_INFO \
787 #define KEYMAP_(name) KEYMAP_##name
792 static struct int_map keymap_table[] = {
793 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
798 #define set_keymap(map, name) \
799 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
801 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
804 add_keybinding(enum keymap keymap, enum request request, int key)
806 struct keybinding *keybinding;
808 keybinding = calloc(1, sizeof(*keybinding));
810 die("Failed to allocate keybinding");
812 keybinding->alias = key;
813 keybinding->request = request;
814 keybinding->next = keybindings[keymap];
815 keybindings[keymap] = keybinding;
818 /* Looks for a key binding first in the given map, then in the generic map, and
819 * lastly in the default keybindings. */
821 get_keybinding(enum keymap keymap, int key)
823 struct keybinding *kbd;
826 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
827 if (kbd->alias == key)
830 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
831 if (kbd->alias == key)
834 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
835 if (default_keybindings[i].alias == key)
836 return default_keybindings[i].request;
838 return (enum request) key;
847 static struct key key_table[] = {
848 { "Enter", KEY_RETURN },
850 { "Backspace", KEY_BACKSPACE },
852 { "Escape", KEY_ESC },
853 { "Left", KEY_LEFT },
854 { "Right", KEY_RIGHT },
856 { "Down", KEY_DOWN },
857 { "Insert", KEY_IC },
858 { "Delete", KEY_DC },
860 { "Home", KEY_HOME },
862 { "PageUp", KEY_PPAGE },
863 { "PageDown", KEY_NPAGE },
873 { "F10", KEY_F(10) },
874 { "F11", KEY_F(11) },
875 { "F12", KEY_F(12) },
879 get_key_value(const char *name)
883 for (i = 0; i < ARRAY_SIZE(key_table); i++)
884 if (!strcasecmp(key_table[i].name, name))
885 return key_table[i].value;
887 if (strlen(name) == 1 && isprint(*name))
894 get_key(enum request request)
896 static char buf[BUFSIZ];
897 static char key_char[] = "'X'";
904 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
905 struct keybinding *keybinding = &default_keybindings[i];
909 if (keybinding->request != request)
912 for (key = 0; key < ARRAY_SIZE(key_table); key++)
913 if (key_table[key].value == keybinding->alias)
914 seq = key_table[key].name;
917 keybinding->alias < 127 &&
918 isprint(keybinding->alias)) {
919 key_char[1] = (char) keybinding->alias;
926 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
927 return "Too many keybindings!";
936 * User config file handling.
939 static struct int_map color_map[] = {
940 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
952 #define set_color(color, name) \
953 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
955 static struct int_map attr_map[] = {
956 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
966 #define set_attribute(attr, name) \
967 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
969 static int config_lineno;
970 static bool config_errors;
971 static char *config_msg;
973 /* Wants: object fgcolor bgcolor [attr] */
975 option_color_command(int argc, char *argv[])
977 struct line_info *info;
979 if (argc != 3 && argc != 4) {
980 config_msg = "Wrong number of arguments given to color command";
984 info = get_line_info(argv[0], strlen(argv[0]));
986 config_msg = "Unknown color name";
990 if (set_color(&info->fg, argv[1]) == ERR ||
991 set_color(&info->bg, argv[2]) == ERR) {
992 config_msg = "Unknown color";
996 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
997 config_msg = "Unknown attribute";
1004 /* Wants: name = value */
1006 option_set_command(int argc, char *argv[])
1009 config_msg = "Wrong number of arguments given to set command";
1013 if (strcmp(argv[1], "=")) {
1014 config_msg = "No value assigned";
1018 if (!strcmp(argv[0], "show-rev-graph")) {
1019 opt_rev_graph = (!strcmp(argv[2], "1") ||
1020 !strcmp(argv[2], "true") ||
1021 !strcmp(argv[2], "yes"));
1025 if (!strcmp(argv[0], "line-number-interval")) {
1026 opt_num_interval = atoi(argv[2]);
1030 if (!strcmp(argv[0], "tab-size")) {
1031 opt_tab_size = atoi(argv[2]);
1035 if (!strcmp(argv[0], "commit-encoding")) {
1036 char *arg = argv[2];
1037 int delimiter = *arg;
1040 switch (delimiter) {
1043 for (arg++, i = 0; arg[i]; i++)
1044 if (arg[i] == delimiter) {
1049 string_ncopy(opt_encoding, arg, strlen(arg));
1054 config_msg = "Unknown variable name";
1058 /* Wants: mode request key */
1060 option_bind_command(int argc, char *argv[])
1062 enum request request;
1067 config_msg = "Wrong number of arguments given to bind command";
1071 if (set_keymap(&keymap, argv[0]) == ERR) {
1072 config_msg = "Unknown key map";
1076 key = get_key_value(argv[1]);
1078 config_msg = "Unknown key";
1082 request = get_request(argv[2]);
1083 if (request == REQ_UNKNOWN) {
1084 config_msg = "Unknown request name";
1088 add_keybinding(keymap, request, key);
1094 set_option(char *opt, char *value)
1101 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1102 argv[argc++] = value;
1109 while (isspace(*value))
1113 if (!strcmp(opt, "color"))
1114 return option_color_command(argc, argv);
1116 if (!strcmp(opt, "set"))
1117 return option_set_command(argc, argv);
1119 if (!strcmp(opt, "bind"))
1120 return option_bind_command(argc, argv);
1122 config_msg = "Unknown option command";
1127 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1132 config_msg = "Internal error";
1134 /* Check for comment markers, since read_properties() will
1135 * only ensure opt and value are split at first " \t". */
1136 optlen = strcspn(opt, "#");
1140 if (opt[optlen] != 0) {
1141 config_msg = "No option value";
1145 /* Look for comment endings in the value. */
1146 size_t len = strcspn(value, "#");
1148 if (len < valuelen) {
1150 value[valuelen] = 0;
1153 status = set_option(opt, value);
1156 if (status == ERR) {
1157 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1158 config_lineno, (int) optlen, opt, config_msg);
1159 config_errors = TRUE;
1162 /* Always keep going if errors are encountered. */
1169 char *home = getenv("HOME");
1170 char buf[SIZEOF_STR];
1174 config_errors = FALSE;
1176 if (!home || !string_format(buf, "%s/.tigrc", home))
1179 /* It's ok that the file doesn't exist. */
1180 file = fopen(buf, "r");
1184 if (read_properties(file, " \t", read_option) == ERR ||
1185 config_errors == TRUE)
1186 fprintf(stderr, "Errors while loading %s.\n", buf);
1199 /* The display array of active views and the index of the current view. */
1200 static struct view *display[2];
1201 static unsigned int current_view;
1203 /* Reading from the prompt? */
1204 static bool input_mode = FALSE;
1206 #define foreach_displayed_view(view, i) \
1207 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1209 #define displayed_views() (display[1] != NULL ? 2 : 1)
1211 /* Current head and commit ID */
1212 static char ref_blob[SIZEOF_REF] = "";
1213 static char ref_commit[SIZEOF_REF] = "HEAD";
1214 static char ref_head[SIZEOF_REF] = "HEAD";
1217 const char *name; /* View name */
1218 const char *cmd_fmt; /* Default command line format */
1219 const char *cmd_env; /* Command line set via environment */
1220 const char *id; /* Points to either of ref_{head,commit,blob} */
1222 struct view_ops *ops; /* View operations */
1224 enum keymap keymap; /* What keymap does this view have */
1226 char cmd[SIZEOF_STR]; /* Command buffer */
1227 char ref[SIZEOF_REF]; /* Hovered commit reference */
1228 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1230 int height, width; /* The width and height of the main window */
1231 WINDOW *win; /* The main window */
1232 WINDOW *title; /* The title window living below the main window */
1235 unsigned long offset; /* Offset of the window top */
1236 unsigned long lineno; /* Current line number */
1239 char grep[SIZEOF_STR]; /* Search string */
1240 regex_t *regex; /* Pre-compiled regex */
1242 /* If non-NULL, points to the view that opened this view. If this view
1243 * is closed tig will switch back to the parent view. */
1244 struct view *parent;
1247 unsigned long lines; /* Total number of lines */
1248 struct line *line; /* Line index */
1249 unsigned long line_size;/* Total number of allocated lines */
1250 unsigned int digits; /* Number of digits in the lines member. */
1258 /* What type of content being displayed. Used in the title bar. */
1260 /* Open and reads in all view content. */
1261 bool (*open)(struct view *view);
1262 /* Read one line; updates view->line. */
1263 bool (*read)(struct view *view, char *data);
1264 /* Draw one line; @lineno must be < view->height. */
1265 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1266 /* Depending on view handle a special requests. */
1267 enum request (*request)(struct view *view, enum request request, struct line *line);
1268 /* Search for regex in a line. */
1269 bool (*grep)(struct view *view, struct line *line);
1271 void (*select)(struct view *view, struct line *line);
1274 static struct view_ops pager_ops;
1275 static struct view_ops main_ops;
1276 static struct view_ops tree_ops;
1277 static struct view_ops blob_ops;
1278 static struct view_ops help_ops;
1279 static struct view_ops status_ops;
1281 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1282 { name, cmd, #env, ref, ops, map}
1284 #define VIEW_(id, name, ops, ref) \
1285 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1288 static struct view views[] = {
1289 VIEW_(MAIN, "main", &main_ops, ref_head),
1290 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1291 VIEW_(LOG, "log", &pager_ops, ref_head),
1292 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1293 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1294 VIEW_(HELP, "help", &help_ops, ""),
1295 VIEW_(PAGER, "pager", &pager_ops, "stdin"),
1296 VIEW_(STATUS, "status", &status_ops, ""),
1299 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1301 #define foreach_view(view, i) \
1302 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1304 #define view_is_displayed(view) \
1305 (view == display[0] || view == display[1])
1308 draw_view_line(struct view *view, unsigned int lineno)
1311 bool selected = (view->offset + lineno == view->lineno);
1314 assert(view_is_displayed(view));
1316 if (view->offset + lineno >= view->lines)
1319 line = &view->line[view->offset + lineno];
1322 line->selected = TRUE;
1323 view->ops->select(view, line);
1324 } else if (line->selected) {
1325 line->selected = FALSE;
1326 wmove(view->win, lineno, 0);
1327 wclrtoeol(view->win);
1330 scrollok(view->win, FALSE);
1331 draw_ok = view->ops->draw(view, line, lineno, selected);
1332 scrollok(view->win, TRUE);
1338 redraw_view_from(struct view *view, int lineno)
1340 assert(0 <= lineno && lineno < view->height);
1342 for (; lineno < view->height; lineno++) {
1343 if (!draw_view_line(view, lineno))
1347 redrawwin(view->win);
1349 wnoutrefresh(view->win);
1351 wrefresh(view->win);
1355 redraw_view(struct view *view)
1358 redraw_view_from(view, 0);
1363 update_view_title(struct view *view)
1365 char buf[SIZEOF_STR];
1366 char state[SIZEOF_STR];
1367 size_t bufpos = 0, statelen = 0;
1369 assert(view_is_displayed(view));
1371 if (!VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1372 unsigned int view_lines = view->offset + view->height;
1373 unsigned int lines = view->lines
1374 ? MIN(view_lines, view->lines) * 100 / view->lines
1377 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1384 time_t secs = time(NULL) - view->start_time;
1386 /* Three git seconds are a long time ... */
1388 string_format_from(state, &statelen, " %lds", secs);
1392 string_format_from(buf, &bufpos, "[%s]", view->name);
1393 if (*view->ref && bufpos < view->width) {
1394 size_t refsize = strlen(view->ref);
1395 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1397 if (minsize < view->width)
1398 refsize = view->width - minsize + 7;
1399 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1402 if (statelen && bufpos < view->width) {
1403 string_format_from(buf, &bufpos, " %s", state);
1406 if (view == display[current_view])
1407 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1409 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1411 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1412 wclrtoeol(view->title);
1413 wmove(view->title, 0, view->width - 1);
1416 wnoutrefresh(view->title);
1418 wrefresh(view->title);
1422 resize_display(void)
1425 struct view *base = display[0];
1426 struct view *view = display[1] ? display[1] : display[0];
1428 /* Setup window dimensions */
1430 getmaxyx(stdscr, base->height, base->width);
1432 /* Make room for the status window. */
1436 /* Horizontal split. */
1437 view->width = base->width;
1438 view->height = SCALE_SPLIT_VIEW(base->height);
1439 base->height -= view->height;
1441 /* Make room for the title bar. */
1445 /* Make room for the title bar. */
1450 foreach_displayed_view (view, i) {
1452 view->win = newwin(view->height, 0, offset, 0);
1454 die("Failed to create %s view", view->name);
1456 scrollok(view->win, TRUE);
1458 view->title = newwin(1, 0, offset + view->height, 0);
1460 die("Failed to create title window");
1463 wresize(view->win, view->height, view->width);
1464 mvwin(view->win, offset, 0);
1465 mvwin(view->title, offset + view->height, 0);
1468 offset += view->height + 1;
1473 redraw_display(void)
1478 foreach_displayed_view (view, i) {
1480 update_view_title(view);
1485 update_display_cursor(struct view *view)
1487 /* Move the cursor to the right-most column of the cursor line.
1489 * XXX: This could turn out to be a bit expensive, but it ensures that
1490 * the cursor does not jump around. */
1492 wmove(view->win, view->lineno - view->offset, view->width - 1);
1493 wrefresh(view->win);
1501 /* Scrolling backend */
1503 do_scroll_view(struct view *view, int lines)
1505 bool redraw_current_line = FALSE;
1507 /* The rendering expects the new offset. */
1508 view->offset += lines;
1510 assert(0 <= view->offset && view->offset < view->lines);
1513 /* Move current line into the view. */
1514 if (view->lineno < view->offset) {
1515 view->lineno = view->offset;
1516 redraw_current_line = TRUE;
1517 } else if (view->lineno >= view->offset + view->height) {
1518 view->lineno = view->offset + view->height - 1;
1519 redraw_current_line = TRUE;
1522 assert(view->offset <= view->lineno && view->lineno < view->lines);
1524 /* Redraw the whole screen if scrolling is pointless. */
1525 if (view->height < ABS(lines)) {
1529 int line = lines > 0 ? view->height - lines : 0;
1530 int end = line + ABS(lines);
1532 wscrl(view->win, lines);
1534 for (; line < end; line++) {
1535 if (!draw_view_line(view, line))
1539 if (redraw_current_line)
1540 draw_view_line(view, view->lineno - view->offset);
1543 redrawwin(view->win);
1544 wrefresh(view->win);
1548 /* Scroll frontend */
1550 scroll_view(struct view *view, enum request request)
1554 assert(view_is_displayed(view));
1557 case REQ_SCROLL_PAGE_DOWN:
1558 lines = view->height;
1559 case REQ_SCROLL_LINE_DOWN:
1560 if (view->offset + lines > view->lines)
1561 lines = view->lines - view->offset;
1563 if (lines == 0 || view->offset + view->height >= view->lines) {
1564 report("Cannot scroll beyond the last line");
1569 case REQ_SCROLL_PAGE_UP:
1570 lines = view->height;
1571 case REQ_SCROLL_LINE_UP:
1572 if (lines > view->offset)
1573 lines = view->offset;
1576 report("Cannot scroll beyond the first line");
1584 die("request %d not handled in switch", request);
1587 do_scroll_view(view, lines);
1592 move_view(struct view *view, enum request request)
1594 int scroll_steps = 0;
1598 case REQ_MOVE_FIRST_LINE:
1599 steps = -view->lineno;
1602 case REQ_MOVE_LAST_LINE:
1603 steps = view->lines - view->lineno - 1;
1606 case REQ_MOVE_PAGE_UP:
1607 steps = view->height > view->lineno
1608 ? -view->lineno : -view->height;
1611 case REQ_MOVE_PAGE_DOWN:
1612 steps = view->lineno + view->height >= view->lines
1613 ? view->lines - view->lineno - 1 : view->height;
1625 die("request %d not handled in switch", request);
1628 if (steps <= 0 && view->lineno == 0) {
1629 report("Cannot move beyond the first line");
1632 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1633 report("Cannot move beyond the last line");
1637 /* Move the current line */
1638 view->lineno += steps;
1639 assert(0 <= view->lineno && view->lineno < view->lines);
1641 /* Check whether the view needs to be scrolled */
1642 if (view->lineno < view->offset ||
1643 view->lineno >= view->offset + view->height) {
1644 scroll_steps = steps;
1645 if (steps < 0 && -steps > view->offset) {
1646 scroll_steps = -view->offset;
1648 } else if (steps > 0) {
1649 if (view->lineno == view->lines - 1 &&
1650 view->lines > view->height) {
1651 scroll_steps = view->lines - view->offset - 1;
1652 if (scroll_steps >= view->height)
1653 scroll_steps -= view->height - 1;
1658 if (!view_is_displayed(view)) {
1659 view->offset += scroll_steps;
1660 assert(0 <= view->offset && view->offset < view->lines);
1661 view->ops->select(view, &view->line[view->lineno]);
1665 /* Repaint the old "current" line if we be scrolling */
1666 if (ABS(steps) < view->height)
1667 draw_view_line(view, view->lineno - steps - view->offset);
1670 do_scroll_view(view, scroll_steps);
1674 /* Draw the current line */
1675 draw_view_line(view, view->lineno - view->offset);
1677 redrawwin(view->win);
1678 wrefresh(view->win);
1687 static void search_view(struct view *view, enum request request);
1690 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1692 assert(view_is_displayed(view));
1694 if (!view->ops->grep(view, line))
1697 if (lineno - view->offset >= view->height) {
1698 view->offset = lineno;
1699 view->lineno = lineno;
1703 unsigned long old_lineno = view->lineno - view->offset;
1705 view->lineno = lineno;
1706 draw_view_line(view, old_lineno);
1708 draw_view_line(view, view->lineno - view->offset);
1709 redrawwin(view->win);
1710 wrefresh(view->win);
1713 report("Line %ld matches '%s'", lineno + 1, view->grep);
1718 find_next(struct view *view, enum request request)
1720 unsigned long lineno = view->lineno;
1725 report("No previous search");
1727 search_view(view, request);
1737 case REQ_SEARCH_BACK:
1746 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1747 lineno += direction;
1749 /* Note, lineno is unsigned long so will wrap around in which case it
1750 * will become bigger than view->lines. */
1751 for (; lineno < view->lines; lineno += direction) {
1752 struct line *line = &view->line[lineno];
1754 if (find_next_line(view, lineno, line))
1758 report("No match found for '%s'", view->grep);
1762 search_view(struct view *view, enum request request)
1767 regfree(view->regex);
1770 view->regex = calloc(1, sizeof(*view->regex));
1775 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1776 if (regex_err != 0) {
1777 char buf[SIZEOF_STR] = "unknown error";
1779 regerror(regex_err, view->regex, buf, sizeof(buf));
1780 report("Search failed: %s", buf);
1784 string_copy(view->grep, opt_search);
1786 find_next(view, request);
1790 * Incremental updating
1794 end_update(struct view *view)
1798 set_nonblocking_input(FALSE);
1799 if (view->pipe == stdin)
1807 begin_update(struct view *view)
1813 string_copy(view->cmd, opt_cmd);
1815 /* When running random commands, initially show the
1816 * command in the title. However, it maybe later be
1817 * overwritten if a commit line is selected. */
1818 string_copy(view->ref, view->cmd);
1820 } else if (view == VIEW(REQ_VIEW_TREE)) {
1821 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1822 char path[SIZEOF_STR];
1824 if (strcmp(view->vid, view->id))
1825 opt_path[0] = path[0] = 0;
1826 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
1829 if (!string_format(view->cmd, format, view->id, path))
1833 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1834 const char *id = view->id;
1836 if (!string_format(view->cmd, format, id, id, id, id, id))
1839 /* Put the current ref_* value to the view title ref
1840 * member. This is needed by the blob view. Most other
1841 * views sets it automatically after loading because the
1842 * first line is a commit line. */
1843 string_copy_rev(view->ref, view->id);
1846 /* Special case for the pager view. */
1848 view->pipe = opt_pipe;
1851 view->pipe = popen(view->cmd, "r");
1857 set_nonblocking_input(TRUE);
1862 string_copy_rev(view->vid, view->id);
1867 for (i = 0; i < view->lines; i++)
1868 if (view->line[i].data)
1869 free(view->line[i].data);
1875 view->start_time = time(NULL);
1880 static struct line *
1881 realloc_lines(struct view *view, size_t line_size)
1883 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1889 view->line_size = line_size;
1894 update_view(struct view *view)
1896 char in_buffer[BUFSIZ];
1897 char out_buffer[BUFSIZ * 2];
1899 /* The number of lines to read. If too low it will cause too much
1900 * redrawing (and possible flickering), if too high responsiveness
1902 unsigned long lines = view->height;
1903 int redraw_from = -1;
1908 /* Only redraw if lines are visible. */
1909 if (view->offset + view->height >= view->lines)
1910 redraw_from = view->lines - view->offset;
1912 /* FIXME: This is probably not perfect for backgrounded views. */
1913 if (!realloc_lines(view, view->lines + lines))
1916 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1917 size_t linelen = strlen(line);
1920 line[linelen - 1] = 0;
1922 if (opt_iconv != ICONV_NONE) {
1924 size_t inlen = linelen;
1926 char *outbuf = out_buffer;
1927 size_t outlen = sizeof(out_buffer);
1931 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1932 if (ret != (size_t) -1) {
1934 linelen = strlen(out_buffer);
1938 if (!view->ops->read(view, line))
1948 lines = view->lines;
1949 for (digits = 0; lines; digits++)
1952 /* Keep the displayed view in sync with line number scaling. */
1953 if (digits != view->digits) {
1954 view->digits = digits;
1959 if (!view_is_displayed(view))
1962 if (view == VIEW(REQ_VIEW_TREE)) {
1963 /* Clear the view and redraw everything since the tree sorting
1964 * might have rearranged things. */
1967 } else if (redraw_from >= 0) {
1968 /* If this is an incremental update, redraw the previous line
1969 * since for commits some members could have changed when
1970 * loading the main view. */
1971 if (redraw_from > 0)
1974 /* Since revision graph visualization requires knowledge
1975 * about the parent commit, it causes a further one-off
1976 * needed to be redrawn for incremental updates. */
1977 if (redraw_from > 0 && opt_rev_graph)
1980 /* Incrementally draw avoids flickering. */
1981 redraw_view_from(view, redraw_from);
1984 /* Update the title _after_ the redraw so that if the redraw picks up a
1985 * commit reference in view->ref it'll be available here. */
1986 update_view_title(view);
1989 if (ferror(view->pipe)) {
1990 report("Failed to read: %s", strerror(errno));
1993 } else if (feof(view->pipe)) {
2001 report("Allocation failure");
2004 view->ops->read(view, NULL);
2009 static struct line *
2010 add_line_data(struct view *view, void *data, enum line_type type)
2012 struct line *line = &view->line[view->lines++];
2014 memset(line, 0, sizeof(*line));
2021 static struct line *
2022 add_line_text(struct view *view, char *data, enum line_type type)
2025 data = strdup(data);
2027 return data ? add_line_data(view, data, type) : NULL;
2036 OPEN_DEFAULT = 0, /* Use default view switching. */
2037 OPEN_SPLIT = 1, /* Split current view. */
2038 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2039 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2043 open_view(struct view *prev, enum request request, enum open_flags flags)
2045 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2046 bool split = !!(flags & OPEN_SPLIT);
2047 bool reload = !!(flags & OPEN_RELOAD);
2048 struct view *view = VIEW(request);
2049 int nviews = displayed_views();
2050 struct view *base_view = display[0];
2052 if (view == prev && nviews == 1 && !reload) {
2053 report("Already in %s view", view->name);
2057 if (view->ops->open) {
2058 if (!view->ops->open(view)) {
2059 report("Failed to load %s view", view->name);
2063 } else if ((reload || strcmp(view->vid, view->id)) &&
2064 !begin_update(view)) {
2065 report("Failed to load %s view", view->name);
2074 /* Maximize the current view. */
2075 memset(display, 0, sizeof(display));
2077 display[current_view] = view;
2080 /* Resize the view when switching between split- and full-screen,
2081 * or when switching between two different full-screen views. */
2082 if (nviews != displayed_views() ||
2083 (nviews == 1 && base_view != display[0]))
2086 if (split && prev->lineno - prev->offset >= prev->height) {
2087 /* Take the title line into account. */
2088 int lines = prev->lineno - prev->offset - prev->height + 1;
2090 /* Scroll the view that was split if the current line is
2091 * outside the new limited view. */
2092 do_scroll_view(prev, lines);
2095 if (prev && view != prev) {
2096 if (split && !backgrounded) {
2097 /* "Blur" the previous view. */
2098 update_view_title(prev);
2101 view->parent = prev;
2104 if (view->pipe && view->lines == 0) {
2105 /* Clear the old view and let the incremental updating refill
2114 /* If the view is backgrounded the above calls to report()
2115 * won't redraw the view title. */
2117 update_view_title(view);
2122 * User request switch noodle
2125 static void status_update(struct view *view);
2128 view_driver(struct view *view, enum request request)
2132 if (view && view->lines) {
2133 request = view->ops->request(view, request, &view->line[view->lineno]);
2134 if (request == REQ_NONE)
2141 case REQ_MOVE_PAGE_UP:
2142 case REQ_MOVE_PAGE_DOWN:
2143 case REQ_MOVE_FIRST_LINE:
2144 case REQ_MOVE_LAST_LINE:
2145 move_view(view, request);
2148 case REQ_SCROLL_LINE_DOWN:
2149 case REQ_SCROLL_LINE_UP:
2150 case REQ_SCROLL_PAGE_DOWN:
2151 case REQ_SCROLL_PAGE_UP:
2152 scroll_view(view, request);
2157 report("No file chosen, press %s to open tree view",
2158 get_key(REQ_VIEW_TREE));
2161 open_view(view, request, OPEN_DEFAULT);
2164 case REQ_VIEW_PAGER:
2165 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2166 report("No pager content, press %s to run command from prompt",
2167 get_key(REQ_PROMPT));
2170 open_view(view, request, OPEN_DEFAULT);
2178 case REQ_VIEW_STATUS:
2179 open_view(view, request, OPEN_DEFAULT);
2184 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2186 if ((view == VIEW(REQ_VIEW_DIFF) &&
2187 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2188 (view == VIEW(REQ_VIEW_BLOB) &&
2189 view->parent == VIEW(REQ_VIEW_TREE))) {
2192 view = view->parent;
2193 line = view->lineno;
2194 move_view(view, request);
2195 if (view_is_displayed(view))
2196 update_view_title(view);
2197 if (line == view->lineno)
2200 move_view(view, request);
2208 int nviews = displayed_views();
2209 int next_view = (current_view + 1) % nviews;
2211 if (next_view == current_view) {
2212 report("Only one view is displayed");
2216 current_view = next_view;
2217 /* Blur out the title of the previous view. */
2218 update_view_title(view);
2222 case REQ_TOGGLE_LINENO:
2223 opt_line_number = !opt_line_number;
2227 case REQ_TOGGLE_REV_GRAPH:
2228 opt_rev_graph = !opt_rev_graph;
2233 /* Always reload^Wrerun commands from the prompt. */
2234 open_view(view, opt_request, OPEN_RELOAD);
2238 case REQ_SEARCH_BACK:
2239 search_view(view, request);
2244 find_next(view, request);
2247 case REQ_STOP_LOADING:
2248 for (i = 0; i < ARRAY_SIZE(views); i++) {
2251 report("Stopped loading the %s view", view->name),
2256 case REQ_SHOW_VERSION:
2257 report("tig-%s (built %s)", VERSION, __DATE__);
2260 case REQ_SCREEN_RESIZE:
2263 case REQ_SCREEN_REDRAW:
2267 case REQ_STATUS_UPDATE:
2268 status_update(view);
2275 case REQ_VIEW_CLOSE:
2276 /* XXX: Mark closed views by letting view->parent point to the
2277 * view itself. Parents to closed view should never be
2280 view->parent->parent != view->parent) {
2281 memset(display, 0, sizeof(display));
2283 display[current_view] = view->parent;
2284 view->parent = view;
2294 /* An unknown key will show most commonly used commands. */
2295 report("Unknown key, press 'h' for help");
2308 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2310 char *text = line->data;
2311 enum line_type type = line->type;
2312 int textlen = strlen(text);
2315 wmove(view->win, lineno, 0);
2319 wchgat(view->win, -1, 0, type, NULL);
2322 attr = get_line_attr(type);
2323 wattrset(view->win, attr);
2325 if (opt_line_number || opt_tab_size < TABSIZE) {
2326 static char spaces[] = " ";
2327 int col_offset = 0, col = 0;
2329 if (opt_line_number) {
2330 unsigned long real_lineno = view->offset + lineno + 1;
2332 if (real_lineno == 1 ||
2333 (real_lineno % opt_num_interval) == 0) {
2334 wprintw(view->win, "%.*d", view->digits, real_lineno);
2337 waddnstr(view->win, spaces,
2338 MIN(view->digits, STRING_SIZE(spaces)));
2340 waddstr(view->win, ": ");
2341 col_offset = view->digits + 2;
2344 while (text && col_offset + col < view->width) {
2345 int cols_max = view->width - col_offset - col;
2349 if (*text == '\t') {
2351 assert(sizeof(spaces) > TABSIZE);
2353 cols = opt_tab_size - (col % opt_tab_size);
2356 text = strchr(text, '\t');
2357 cols = line ? text - pos : strlen(pos);
2360 waddnstr(view->win, pos, MIN(cols, cols_max));
2365 int col = 0, pos = 0;
2367 for (; pos < textlen && col < view->width; pos++, col++)
2368 if (text[pos] == '\t')
2369 col += TABSIZE - (col % TABSIZE) - 1;
2371 waddnstr(view->win, text, pos);
2378 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2380 char refbuf[SIZEOF_STR];
2384 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2387 pipe = popen(refbuf, "r");
2391 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2392 ref = chomp_string(ref);
2398 /* This is the only fatal call, since it can "corrupt" the buffer. */
2399 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2406 add_pager_refs(struct view *view, struct line *line)
2408 char buf[SIZEOF_STR];
2409 char *commit_id = line->data + STRING_SIZE("commit ");
2411 size_t bufpos = 0, refpos = 0;
2412 const char *sep = "Refs: ";
2413 bool is_tag = FALSE;
2415 assert(line->type == LINE_COMMIT);
2417 refs = get_refs(commit_id);
2419 if (view == VIEW(REQ_VIEW_DIFF))
2420 goto try_add_describe_ref;
2425 struct ref *ref = refs[refpos];
2426 char *fmt = ref->tag ? "%s[%s]" :
2427 ref->remote ? "%s<%s>" : "%s%s";
2429 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2434 } while (refs[refpos++]->next);
2436 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2437 try_add_describe_ref:
2438 /* Add <tag>-g<commit_id> "fake" reference. */
2439 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2446 if (!realloc_lines(view, view->line_size + 1))
2449 add_line_text(view, buf, LINE_PP_REFS);
2453 pager_read(struct view *view, char *data)
2460 line = add_line_text(view, data, get_line_type(data));
2464 if (line->type == LINE_COMMIT &&
2465 (view == VIEW(REQ_VIEW_DIFF) ||
2466 view == VIEW(REQ_VIEW_LOG)))
2467 add_pager_refs(view, line);
2473 pager_request(struct view *view, enum request request, struct line *line)
2477 if (request != REQ_ENTER)
2480 if (line->type == LINE_COMMIT &&
2481 (view == VIEW(REQ_VIEW_LOG) ||
2482 view == VIEW(REQ_VIEW_PAGER))) {
2483 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2487 /* Always scroll the view even if it was split. That way
2488 * you can use Enter to scroll through the log view and
2489 * split open each commit diff. */
2490 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2492 /* FIXME: A minor workaround. Scrolling the view will call report("")
2493 * but if we are scrolling a non-current view this won't properly
2494 * update the view title. */
2496 update_view_title(view);
2502 pager_grep(struct view *view, struct line *line)
2505 char *text = line->data;
2510 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2517 pager_select(struct view *view, struct line *line)
2519 if (line->type == LINE_COMMIT) {
2520 char *text = line->data + STRING_SIZE("commit ");
2522 if (view != VIEW(REQ_VIEW_PAGER))
2523 string_copy_rev(view->ref, text);
2524 string_copy_rev(ref_commit, text);
2528 static struct view_ops pager_ops = {
2544 help_open(struct view *view)
2547 int lines = ARRAY_SIZE(req_info) + 2;
2550 if (view->lines > 0)
2553 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2554 if (!req_info[i].request)
2557 view->line = calloc(lines, sizeof(*view->line));
2561 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2563 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2566 if (!req_info[i].request) {
2567 add_line_text(view, "", LINE_DEFAULT);
2568 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2572 key = get_key(req_info[i].request);
2573 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
2576 add_line_text(view, buf, LINE_DEFAULT);
2582 static struct view_ops help_ops = {
2597 /* Parse output from git-ls-tree(1):
2599 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2600 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2601 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2602 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2605 #define SIZEOF_TREE_ATTR \
2606 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2608 #define TREE_UP_FORMAT "040000 tree %s\t.."
2611 tree_compare_entry(enum line_type type1, char *name1,
2612 enum line_type type2, char *name2)
2614 if (type1 != type2) {
2615 if (type1 == LINE_TREE_DIR)
2620 return strcmp(name1, name2);
2624 tree_read(struct view *view, char *text)
2626 size_t textlen = text ? strlen(text) : 0;
2627 char buf[SIZEOF_STR];
2629 enum line_type type;
2630 bool first_read = view->lines == 0;
2632 if (textlen <= SIZEOF_TREE_ATTR)
2635 type = text[STRING_SIZE("100644 ")] == 't'
2636 ? LINE_TREE_DIR : LINE_TREE_FILE;
2639 /* Add path info line */
2640 if (!string_format(buf, "Directory path /%s", opt_path) ||
2641 !realloc_lines(view, view->line_size + 1) ||
2642 !add_line_text(view, buf, LINE_DEFAULT))
2645 /* Insert "link" to parent directory. */
2647 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2648 !realloc_lines(view, view->line_size + 1) ||
2649 !add_line_text(view, buf, LINE_TREE_DIR))
2654 /* Strip the path part ... */
2656 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2657 size_t striplen = strlen(opt_path);
2658 char *path = text + SIZEOF_TREE_ATTR;
2660 if (pathlen > striplen)
2661 memmove(path, path + striplen,
2662 pathlen - striplen + 1);
2665 /* Skip "Directory ..." and ".." line. */
2666 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2667 struct line *line = &view->line[pos];
2668 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2669 char *path2 = text + SIZEOF_TREE_ATTR;
2670 int cmp = tree_compare_entry(line->type, path1, type, path2);
2675 text = strdup(text);
2679 if (view->lines > pos)
2680 memmove(&view->line[pos + 1], &view->line[pos],
2681 (view->lines - pos) * sizeof(*line));
2683 line = &view->line[pos];
2690 if (!add_line_text(view, text, type))
2693 /* Move the current line to the first tree entry. */
2701 tree_request(struct view *view, enum request request, struct line *line)
2703 enum open_flags flags;
2705 if (request != REQ_ENTER)
2708 switch (line->type) {
2710 /* Depending on whether it is a subdir or parent (updir?) link
2711 * mangle the path buffer. */
2712 if (line == &view->line[1] && *opt_path) {
2713 size_t path_len = strlen(opt_path);
2714 char *dirsep = opt_path + path_len - 1;
2716 while (dirsep > opt_path && dirsep[-1] != '/')
2722 size_t pathlen = strlen(opt_path);
2723 size_t origlen = pathlen;
2724 char *data = line->data;
2725 char *basename = data + SIZEOF_TREE_ATTR;
2727 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2728 opt_path[origlen] = 0;
2733 /* Trees and subtrees share the same ID, so they are not not
2734 * unique like blobs. */
2735 flags = OPEN_RELOAD;
2736 request = REQ_VIEW_TREE;
2739 case LINE_TREE_FILE:
2740 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2741 request = REQ_VIEW_BLOB;
2748 open_view(view, request, flags);
2754 tree_select(struct view *view, struct line *line)
2756 char *text = line->data + STRING_SIZE("100644 blob ");
2758 if (line->type == LINE_TREE_FILE) {
2759 string_copy_rev(ref_blob, text);
2761 } else if (line->type != LINE_TREE_DIR) {
2765 string_copy_rev(view->ref, text);
2768 static struct view_ops tree_ops = {
2779 blob_read(struct view *view, char *line)
2781 return add_line_text(view, line, LINE_DEFAULT);
2784 static struct view_ops blob_ops = {
2803 char rev[SIZEOF_REV];
2807 char rev[SIZEOF_REV];
2809 char name[SIZEOF_STR];
2812 /* Get fields from the diff line:
2813 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
2816 status_get_diff(struct status *file, char *buf, size_t bufsize)
2818 char *old_mode = buf + 1;
2819 char *new_mode = buf + 8;
2820 char *old_rev = buf + 15;
2821 char *new_rev = buf + 56;
2822 char *status = buf + 97;
2824 if (bufsize != 99 ||
2825 old_mode[-1] != ':' ||
2826 new_mode[-1] != ' ' ||
2827 old_rev[-1] != ' ' ||
2828 new_rev[-1] != ' ' ||
2832 file->status = *status;
2834 string_copy_rev(file->old.rev, old_rev);
2835 string_copy_rev(file->new.rev, new_rev);
2837 file->old.mode = strtoul(old_mode, NULL, 8);
2838 file->new.mode = strtoul(new_mode, NULL, 8);
2846 status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
2848 struct status *file = NULL;
2849 char buf[SIZEOF_STR * 4];
2853 pipe = popen(cmd, "r");
2857 add_line_data(view, NULL, type);
2859 while (!feof(pipe) && !ferror(pipe)) {
2863 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
2866 bufsize += readsize;
2868 /* Process while we have NUL chars. */
2869 while ((sep = memchr(buf, 0, bufsize))) {
2870 size_t sepsize = sep - buf + 1;
2873 if (!realloc_lines(view, view->line_size + 1))
2876 file = calloc(1, sizeof(*file));
2880 add_line_data(view, file, type);
2883 /* Parse diff info part. */
2887 } else if (!file->status) {
2888 if (!status_get_diff(file, buf, sepsize))
2892 memmove(buf, sep + 1, bufsize);
2894 sep = memchr(buf, 0, bufsize);
2897 sepsize = sep - buf + 1;
2900 /* git-ls-files just delivers a NUL separated
2901 * list of file names similar to the second half
2902 * of the git-diff-* output. */
2903 string_ncopy(file->name, buf, sepsize);
2905 memmove(buf, sep + 1, bufsize);
2916 if (!view->line[view->lines - 1].data)
2917 add_line_data(view, NULL, LINE_STAT_NONE);
2923 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --cached HEAD"
2924 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
2925 #define STATUS_LIST_OTHER_CMD \
2926 "git ls-files -z --others --exclude-per-directory=.gitignore"
2928 #define STATUS_DIFF_SHOW_CMD \
2929 "git diff --root --patch-with-stat --find-copies-harder -B -C %s -- %s 2>/dev/null"
2931 /* First parse staged info using git-diff-index(1), then parse unstaged
2932 * info using git-diff-files(1), and finally untracked files using
2933 * git-ls-files(1). */
2935 status_open(struct view *view)
2937 struct stat statbuf;
2938 char exclude[SIZEOF_STR];
2939 char cmd[SIZEOF_STR];
2942 for (i = 0; i < view->lines; i++)
2943 free(view->line[i].data);
2945 view->lines = view->line_size = 0;
2948 if (!realloc_lines(view, view->line_size + 6))
2951 if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
2954 string_copy(cmd, STATUS_LIST_OTHER_CMD);
2956 if (stat(exclude, &statbuf) >= 0) {
2957 size_t cmdsize = strlen(cmd);
2959 if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
2960 sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
2964 if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
2965 !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
2966 !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
2973 status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2975 struct status *status = line->data;
2977 wmove(view->win, lineno, 0);
2980 wattrset(view->win, get_line_attr(LINE_CURSOR));
2981 wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
2983 } else if (!status && line->type != LINE_STAT_NONE) {
2984 wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
2985 wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
2988 wattrset(view->win, get_line_attr(line->type));
2994 switch (line->type) {
2995 case LINE_STAT_STAGED:
2996 text = "Changes to be committed:";
2999 case LINE_STAT_UNSTAGED:
3000 text = "Changed but not updated:";
3003 case LINE_STAT_UNTRACKED:
3004 text = "Untracked files:";
3007 case LINE_STAT_NONE:
3008 text = " (no files)";
3015 waddstr(view->win, text);
3019 waddch(view->win, status->status);
3021 wattrset(view->win, A_NORMAL);
3022 wmove(view->win, lineno, 4);
3023 waddstr(view->win, status->name);
3029 status_request(struct view *view, enum request request, struct line *line)
3031 struct status *status = line->data;
3032 char path[SIZEOF_STR] = "";
3036 if (request != REQ_ENTER)
3039 if (line->type == LINE_STAT_NONE ||
3040 (!status && line[1].type == LINE_STAT_NONE)) {
3041 report("No file to diff");
3045 if (status && sq_quote(path, 0, status->name) >= sizeof(path))
3049 line->type != LINE_STAT_UNTRACKED &&
3050 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
3053 switch (line->type) {
3054 case LINE_STAT_STAGED:
3055 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3059 info = "Staged changes to %s";
3061 info = "Staged changes";
3064 case LINE_STAT_UNSTAGED:
3065 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3069 info = "Unstaged changes to %s";
3071 info = "Unstaged changes";
3074 case LINE_STAT_UNTRACKED:
3080 report("No file to show");
3084 opt_pipe = fopen(status->name, "r");
3085 info = "Untracked file %s";
3092 open_view(view, REQ_VIEW_DIFF, OPEN_RELOAD | OPEN_SPLIT);
3093 if (view_is_displayed(VIEW(REQ_VIEW_DIFF))) {
3094 string_format(VIEW(REQ_VIEW_DIFF)->ref, info, status->name);
3101 status_update_file(struct view *view, struct status *status, enum line_type type)
3103 char cmd[SIZEOF_STR];
3104 char buf[SIZEOF_STR];
3111 type != LINE_STAT_UNTRACKED &&
3112 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
3116 case LINE_STAT_STAGED:
3117 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
3123 string_add(cmd, cmdsize, "git update-index -z --index-info");
3126 case LINE_STAT_UNSTAGED:
3127 case LINE_STAT_UNTRACKED:
3128 if (!string_format_from(buf, &bufsize, "%s%c", status->name, 0))
3131 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
3138 pipe = popen(cmd, "w");
3142 while (!ferror(pipe) && written < bufsize) {
3143 written += fwrite(buf + written, 1, bufsize - written, pipe);
3148 if (written != bufsize)
3155 status_update(struct view *view)
3157 if (view == VIEW(REQ_VIEW_STATUS)) {
3158 struct line *line = &view->line[view->lineno];
3160 assert(view->lines);
3163 while (++line < view->line + view->lines && line->data) {
3164 if (!status_update_file(view, line->data, line->type))
3165 report("Failed to update file status");
3168 if (!line[-1].data) {
3169 report("Nothing to update");
3174 } else if (!status_update_file(view, line->data, line->type)) {
3175 report("Failed to update file status");
3178 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
3180 report("This action is only valid for the status view");
3185 status_select(struct view *view, struct line *line)
3187 struct status *status = line->data;
3188 char file[SIZEOF_STR] = "all files";
3191 if (status && !string_format(file, "'%s'", status->name))
3194 if (!status && line[1].type == LINE_STAT_NONE)
3197 switch (line->type) {
3198 case LINE_STAT_STAGED:
3199 text = "Press %s to unstage %s for commit";
3202 case LINE_STAT_UNSTAGED:
3203 text = "Press %s to stage %s for commit";
3206 case LINE_STAT_UNTRACKED:
3207 text = "Press %s to stage %s for addition";
3210 case LINE_STAT_NONE:
3211 text = "Nothing to update";
3218 string_format(view->ref, text, get_key(REQ_STATUS_UPDATE), file);
3222 status_grep(struct view *view, struct line *line)
3224 struct status *status = line->data;
3225 enum { S_STATUS, S_NAME, S_END } state;
3232 for (state = S_STATUS; state < S_END; state++) {
3236 case S_NAME: text = status->name; break;
3238 buf[0] = status->status;
3246 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3253 static struct view_ops status_ops = {
3269 char id[SIZEOF_REV]; /* SHA1 ID. */
3270 char title[128]; /* First line of the commit message. */
3271 char author[75]; /* Author of the commit. */
3272 struct tm time; /* Date from the author ident. */
3273 struct ref **refs; /* Repository references. */
3274 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
3275 size_t graph_size; /* The width of the graph array. */
3278 /* Size of rev graph with no "padding" columns */
3279 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
3282 struct rev_graph *prev, *next, *parents;
3283 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
3285 struct commit *commit;
3289 /* Parents of the commit being visualized. */
3290 static struct rev_graph graph_parents[4];
3292 /* The current stack of revisions on the graph. */
3293 static struct rev_graph graph_stacks[4] = {
3294 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
3295 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
3296 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
3297 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
3301 graph_parent_is_merge(struct rev_graph *graph)
3303 return graph->parents->size > 1;
3307 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
3309 struct commit *commit = graph->commit;
3311 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
3312 commit->graph[commit->graph_size++] = symbol;
3316 done_rev_graph(struct rev_graph *graph)
3318 if (graph_parent_is_merge(graph) &&
3319 graph->pos < graph->size - 1 &&
3320 graph->next->size == graph->size + graph->parents->size - 1) {
3321 size_t i = graph->pos + graph->parents->size - 1;
3323 graph->commit->graph_size = i * 2;
3324 while (i < graph->next->size - 1) {
3325 append_to_rev_graph(graph, ' ');
3326 append_to_rev_graph(graph, '\\');
3331 graph->size = graph->pos = 0;
3332 graph->commit = NULL;
3333 memset(graph->parents, 0, sizeof(*graph->parents));
3337 push_rev_graph(struct rev_graph *graph, char *parent)
3341 /* "Collapse" duplicate parents lines.
3343 * FIXME: This needs to also update update the drawn graph but
3344 * for now it just serves as a method for pruning graph lines. */
3345 for (i = 0; i < graph->size; i++)
3346 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
3349 if (graph->size < SIZEOF_REVITEMS) {
3350 string_copy_rev(graph->rev[graph->size++], parent);
3355 get_rev_graph_symbol(struct rev_graph *graph)
3359 if (graph->parents->size == 0)
3360 symbol = REVGRAPH_INIT;
3361 else if (graph_parent_is_merge(graph))
3362 symbol = REVGRAPH_MERGE;
3363 else if (graph->pos >= graph->size)
3364 symbol = REVGRAPH_BRANCH;
3366 symbol = REVGRAPH_COMMIT;
3372 draw_rev_graph(struct rev_graph *graph)
3375 chtype separator, line;
3377 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
3378 static struct rev_filler fillers[] = {
3379 { ' ', REVGRAPH_LINE },
3384 chtype symbol = get_rev_graph_symbol(graph);
3385 struct rev_filler *filler;
3388 filler = &fillers[DEFAULT];
3390 for (i = 0; i < graph->pos; i++) {
3391 append_to_rev_graph(graph, filler->line);
3392 if (graph_parent_is_merge(graph->prev) &&
3393 graph->prev->pos == i)
3394 filler = &fillers[RSHARP];
3396 append_to_rev_graph(graph, filler->separator);
3399 /* Place the symbol for this revision. */
3400 append_to_rev_graph(graph, symbol);
3402 if (graph->prev->size > graph->size)
3403 filler = &fillers[RDIAG];
3405 filler = &fillers[DEFAULT];
3409 for (; i < graph->size; i++) {
3410 append_to_rev_graph(graph, filler->separator);
3411 append_to_rev_graph(graph, filler->line);
3412 if (graph_parent_is_merge(graph->prev) &&
3413 i < graph->prev->pos + graph->parents->size)
3414 filler = &fillers[RSHARP];
3415 if (graph->prev->size > graph->size)
3416 filler = &fillers[LDIAG];
3419 if (graph->prev->size > graph->size) {
3420 append_to_rev_graph(graph, filler->separator);
3421 if (filler->line != ' ')
3422 append_to_rev_graph(graph, filler->line);
3426 /* Prepare the next rev graph */
3428 prepare_rev_graph(struct rev_graph *graph)
3432 /* First, traverse all lines of revisions up to the active one. */
3433 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
3434 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
3437 push_rev_graph(graph->next, graph->rev[graph->pos]);
3440 /* Interleave the new revision parent(s). */
3441 for (i = 0; i < graph->parents->size; i++)
3442 push_rev_graph(graph->next, graph->parents->rev[i]);
3444 /* Lastly, put any remaining revisions. */
3445 for (i = graph->pos + 1; i < graph->size; i++)
3446 push_rev_graph(graph->next, graph->rev[i]);
3450 update_rev_graph(struct rev_graph *graph)
3452 /* If this is the finalizing update ... */
3454 prepare_rev_graph(graph);
3456 /* Graph visualization needs a one rev look-ahead,
3457 * so the first update doesn't visualize anything. */
3458 if (!graph->prev->commit)
3461 draw_rev_graph(graph->prev);
3462 done_rev_graph(graph->prev->prev);
3471 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3473 char buf[DATE_COLS + 1];
3474 struct commit *commit = line->data;
3475 enum line_type type;
3481 if (!*commit->author)
3484 wmove(view->win, lineno, col);
3488 wattrset(view->win, get_line_attr(type));
3489 wchgat(view->win, -1, 0, type, NULL);
3492 type = LINE_MAIN_COMMIT;
3493 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
3496 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
3497 waddnstr(view->win, buf, timelen);
3498 waddstr(view->win, " ");
3501 wmove(view->win, lineno, col);
3502 if (type != LINE_CURSOR)
3503 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
3506 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
3508 authorlen = strlen(commit->author);
3509 if (authorlen > AUTHOR_COLS - 2) {
3510 authorlen = AUTHOR_COLS - 2;
3516 waddnstr(view->win, commit->author, authorlen);
3517 if (type != LINE_CURSOR)
3518 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
3519 waddch(view->win, '~');
3521 waddstr(view->win, commit->author);
3525 if (type != LINE_CURSOR)
3526 wattrset(view->win, A_NORMAL);
3528 if (opt_rev_graph && commit->graph_size) {
3531 wmove(view->win, lineno, col);
3532 /* Using waddch() instead of waddnstr() ensures that
3533 * they'll be rendered correctly for the cursor line. */
3534 for (i = 0; i < commit->graph_size; i++)
3535 waddch(view->win, commit->graph[i]);
3537 waddch(view->win, ' ');
3538 col += commit->graph_size + 1;
3541 wmove(view->win, lineno, col);
3547 if (type == LINE_CURSOR)
3549 else if (commit->refs[i]->tag)
3550 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
3551 else if (commit->refs[i]->remote)
3552 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
3554 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3555 waddstr(view->win, "[");
3556 waddstr(view->win, commit->refs[i]->name);
3557 waddstr(view->win, "]");
3558 if (type != LINE_CURSOR)
3559 wattrset(view->win, A_NORMAL);
3560 waddstr(view->win, " ");
3561 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3562 } while (commit->refs[i++]->next);
3565 if (type != LINE_CURSOR)
3566 wattrset(view->win, get_line_attr(type));
3569 int titlelen = strlen(commit->title);
3571 if (col + titlelen > view->width)
3572 titlelen = view->width - col;
3574 waddnstr(view->win, commit->title, titlelen);
3580 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3582 main_read(struct view *view, char *line)
3584 static struct rev_graph *graph = graph_stacks;
3585 enum line_type type;
3586 struct commit *commit;
3589 update_rev_graph(graph);
3593 type = get_line_type(line);
3594 if (type == LINE_COMMIT) {
3595 commit = calloc(1, sizeof(struct commit));
3599 string_copy_rev(commit->id, line + STRING_SIZE("commit "));
3600 commit->refs = get_refs(commit->id);
3601 graph->commit = commit;
3602 add_line_data(view, commit, LINE_MAIN_COMMIT);
3608 commit = view->line[view->lines - 1].data;
3612 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
3617 /* Parse author lines where the name may be empty:
3618 * author <email@address.tld> 1138474660 +0100
3620 char *ident = line + STRING_SIZE("author ");
3621 char *nameend = strchr(ident, '<');
3622 char *emailend = strchr(ident, '>');
3624 if (!nameend || !emailend)
3627 update_rev_graph(graph);
3628 graph = graph->next;
3630 *nameend = *emailend = 0;
3631 ident = chomp_string(ident);
3633 ident = chomp_string(nameend + 1);
3638 string_ncopy(commit->author, ident, strlen(ident));
3640 /* Parse epoch and timezone */
3641 if (emailend[1] == ' ') {
3642 char *secs = emailend + 2;
3643 char *zone = strchr(secs, ' ');
3644 time_t time = (time_t) atol(secs);
3646 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3650 tz = ('0' - zone[1]) * 60 * 60 * 10;
3651 tz += ('0' - zone[2]) * 60 * 60;
3652 tz += ('0' - zone[3]) * 60;
3653 tz += ('0' - zone[4]) * 60;
3661 gmtime_r(&time, &commit->time);
3666 /* Fill in the commit title if it has not already been set. */
3667 if (commit->title[0])
3670 /* Require titles to start with a non-space character at the
3671 * offset used by git log. */
3672 if (strncmp(line, " ", 4))
3675 /* Well, if the title starts with a whitespace character,
3676 * try to be forgiving. Otherwise we end up with no title. */
3677 while (isspace(*line))
3681 /* FIXME: More graceful handling of titles; append "..." to
3682 * shortened titles, etc. */
3684 string_ncopy(commit->title, line, strlen(line));
3691 main_request(struct view *view, enum request request, struct line *line)
3693 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3695 if (request == REQ_ENTER)
3696 open_view(view, REQ_VIEW_DIFF, flags);
3704 main_grep(struct view *view, struct line *line)
3706 struct commit *commit = line->data;
3707 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3708 char buf[DATE_COLS + 1];
3711 for (state = S_TITLE; state < S_END; state++) {
3715 case S_TITLE: text = commit->title; break;
3716 case S_AUTHOR: text = commit->author; break;
3718 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3727 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3735 main_select(struct view *view, struct line *line)
3737 struct commit *commit = line->data;
3739 string_copy_rev(view->ref, commit->id);
3740 string_copy_rev(ref_commit, view->ref);
3743 static struct view_ops main_ops = {
3755 * Unicode / UTF-8 handling
3757 * NOTE: Much of the following code for dealing with unicode is derived from
3758 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3759 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3762 /* I've (over)annotated a lot of code snippets because I am not entirely
3763 * confident that the approach taken by this small UTF-8 interface is correct.
3767 unicode_width(unsigned long c)
3770 (c <= 0x115f /* Hangul Jamo */
3773 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3775 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3776 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3777 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3778 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3779 || (c >= 0xffe0 && c <= 0xffe6)
3780 || (c >= 0x20000 && c <= 0x2fffd)
3781 || (c >= 0x30000 && c <= 0x3fffd)))
3787 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3788 * Illegal bytes are set one. */
3789 static const unsigned char utf8_bytes[256] = {
3790 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,
3791 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,
3792 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,
3793 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,
3794 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,
3795 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,
3796 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,
3797 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,
3800 /* Decode UTF-8 multi-byte representation into a unicode character. */
3801 static inline unsigned long
3802 utf8_to_unicode(const char *string, size_t length)
3804 unsigned long unicode;
3808 unicode = string[0];
3811 unicode = (string[0] & 0x1f) << 6;
3812 unicode += (string[1] & 0x3f);
3815 unicode = (string[0] & 0x0f) << 12;
3816 unicode += ((string[1] & 0x3f) << 6);
3817 unicode += (string[2] & 0x3f);
3820 unicode = (string[0] & 0x0f) << 18;
3821 unicode += ((string[1] & 0x3f) << 12);
3822 unicode += ((string[2] & 0x3f) << 6);
3823 unicode += (string[3] & 0x3f);
3826 unicode = (string[0] & 0x0f) << 24;
3827 unicode += ((string[1] & 0x3f) << 18);
3828 unicode += ((string[2] & 0x3f) << 12);
3829 unicode += ((string[3] & 0x3f) << 6);
3830 unicode += (string[4] & 0x3f);
3833 unicode = (string[0] & 0x01) << 30;
3834 unicode += ((string[1] & 0x3f) << 24);
3835 unicode += ((string[2] & 0x3f) << 18);
3836 unicode += ((string[3] & 0x3f) << 12);
3837 unicode += ((string[4] & 0x3f) << 6);
3838 unicode += (string[5] & 0x3f);
3841 die("Invalid unicode length");
3844 /* Invalid characters could return the special 0xfffd value but NUL
3845 * should be just as good. */
3846 return unicode > 0xffff ? 0 : unicode;
3849 /* Calculates how much of string can be shown within the given maximum width
3850 * and sets trimmed parameter to non-zero value if all of string could not be
3853 * Additionally, adds to coloffset how many many columns to move to align with
3854 * the expected position. Takes into account how multi-byte and double-width
3855 * characters will effect the cursor position.
3857 * Returns the number of bytes to output from string to satisfy max_width. */
3859 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3861 const char *start = string;
3862 const char *end = strchr(string, '\0');
3868 while (string < end) {
3869 int c = *(unsigned char *) string;
3870 unsigned char bytes = utf8_bytes[c];
3872 unsigned long unicode;
3874 if (string + bytes > end)
3877 /* Change representation to figure out whether
3878 * it is a single- or double-width character. */
3880 unicode = utf8_to_unicode(string, bytes);
3881 /* FIXME: Graceful handling of invalid unicode character. */
3885 ucwidth = unicode_width(unicode);
3887 if (width > max_width) {
3892 /* The column offset collects the differences between the
3893 * number of bytes encoding a character and the number of
3894 * columns will be used for rendering said character.
3896 * So if some character A is encoded in 2 bytes, but will be
3897 * represented on the screen using only 1 byte this will and up
3898 * adding 1 to the multi-byte column offset.
3900 * Assumes that no double-width character can be encoding in
3901 * less than two bytes. */
3902 if (bytes > ucwidth)
3903 mbwidth += bytes - ucwidth;
3908 *coloffset += mbwidth;
3910 return string - start;
3918 /* Whether or not the curses interface has been initialized. */
3919 static bool cursed = FALSE;
3921 /* The status window is used for polling keystrokes. */
3922 static WINDOW *status_win;
3924 static bool status_empty = TRUE;
3926 /* Update status and title window. */
3928 report(const char *msg, ...)
3930 struct view *view = display[current_view];
3935 if (!status_empty || *msg) {
3938 va_start(args, msg);
3940 wmove(status_win, 0, 0);
3942 vwprintw(status_win, msg, args);
3943 status_empty = FALSE;
3945 status_empty = TRUE;
3947 wclrtoeol(status_win);
3948 wrefresh(status_win);
3953 update_view_title(view);
3954 update_display_cursor(view);
3957 /* Controls when nodelay should be in effect when polling user input. */
3959 set_nonblocking_input(bool loading)
3961 static unsigned int loading_views;
3963 if ((loading == FALSE && loading_views-- == 1) ||
3964 (loading == TRUE && loading_views++ == 0))
3965 nodelay(status_win, loading);
3973 /* Initialize the curses library */
3974 if (isatty(STDIN_FILENO)) {
3975 cursed = !!initscr();
3977 /* Leave stdin and stdout alone when acting as a pager. */
3978 FILE *io = fopen("/dev/tty", "r+");
3981 die("Failed to open /dev/tty");
3982 cursed = !!newterm(NULL, io, io);
3986 die("Failed to initialize curses");
3988 nonl(); /* Tell curses not to do NL->CR/NL on output */
3989 cbreak(); /* Take input chars one at a time, no wait for \n */
3990 noecho(); /* Don't echo input */
3991 leaveok(stdscr, TRUE);
3996 getmaxyx(stdscr, y, x);
3997 status_win = newwin(1, 0, y - 1, 0);
3999 die("Failed to create status window");
4001 /* Enable keyboard mapping */
4002 keypad(status_win, TRUE);
4003 wbkgdset(status_win, get_line_attr(LINE_STATUS));
4007 read_prompt(const char *prompt)
4009 enum { READING, STOP, CANCEL } status = READING;
4010 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
4013 while (status == READING) {
4019 foreach_view (view, i)
4024 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
4025 wclrtoeol(status_win);
4027 /* Refresh, accept single keystroke of input */
4028 key = wgetch(status_win);
4033 status = pos ? STOP : CANCEL;
4051 if (pos >= sizeof(buf)) {
4052 report("Input string too long");
4057 buf[pos++] = (char) key;
4061 /* Clear the status window */
4062 status_empty = FALSE;
4065 if (status == CANCEL)
4074 * Repository references
4077 static struct ref *refs;
4078 static size_t refs_size;
4080 /* Id <-> ref store */
4081 static struct ref ***id_refs;
4082 static size_t id_refs_size;
4084 static struct ref **
4087 struct ref ***tmp_id_refs;
4088 struct ref **ref_list = NULL;
4089 size_t ref_list_size = 0;
4092 for (i = 0; i < id_refs_size; i++)
4093 if (!strcmp(id, id_refs[i][0]->id))
4096 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
4100 id_refs = tmp_id_refs;
4102 for (i = 0; i < refs_size; i++) {
4105 if (strcmp(id, refs[i].id))
4108 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
4116 if (ref_list_size > 0)
4117 ref_list[ref_list_size - 1]->next = 1;
4118 ref_list[ref_list_size] = &refs[i];
4120 /* XXX: The properties of the commit chains ensures that we can
4121 * safely modify the shared ref. The repo references will
4122 * always be similar for the same id. */
4123 ref_list[ref_list_size]->next = 0;
4128 id_refs[id_refs_size++] = ref_list;
4134 read_ref(char *id, size_t idlen, char *name, size_t namelen)
4138 bool remote = FALSE;
4140 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
4141 /* Commits referenced by tags has "^{}" appended. */
4142 if (name[namelen - 1] != '}')
4145 while (namelen > 0 && name[namelen] != '^')
4149 namelen -= STRING_SIZE("refs/tags/");
4150 name += STRING_SIZE("refs/tags/");
4152 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
4154 namelen -= STRING_SIZE("refs/remotes/");
4155 name += STRING_SIZE("refs/remotes/");
4157 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
4158 namelen -= STRING_SIZE("refs/heads/");
4159 name += STRING_SIZE("refs/heads/");
4161 } else if (!strcmp(name, "HEAD")) {
4165 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
4169 ref = &refs[refs_size++];
4170 ref->name = malloc(namelen + 1);
4174 strncpy(ref->name, name, namelen);
4175 ref->name[namelen] = 0;
4177 ref->remote = remote;
4178 string_copy_rev(ref->id, id);
4186 const char *cmd_env = getenv("TIG_LS_REMOTE");
4187 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
4189 return read_properties(popen(cmd, "r"), "\t", read_ref);
4193 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
4195 if (!strcmp(name, "i18n.commitencoding"))
4196 string_ncopy(opt_encoding, value, valuelen);
4202 load_repo_config(void)
4204 return read_properties(popen("git repo-config --list", "r"),
4205 "=", read_repo_config_option);
4209 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
4211 if (!opt_git_dir[0])
4212 string_ncopy(opt_git_dir, name, namelen);
4214 string_ncopy(opt_cdup, name, namelen);
4218 /* XXX: The line outputted by "--show-cdup" can be empty so the option
4219 * must be the last one! */
4221 load_repo_info(void)
4223 return read_properties(popen("git rev-parse --git-dir --show-cdup 2>/dev/null", "r"),
4224 "=", read_repo_info);
4228 read_properties(FILE *pipe, const char *separators,
4229 int (*read_property)(char *, size_t, char *, size_t))
4231 char buffer[BUFSIZ];
4238 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
4243 name = chomp_string(name);
4244 namelen = strcspn(name, separators);
4246 if (name[namelen]) {
4248 value = chomp_string(name + namelen + 1);
4249 valuelen = strlen(value);
4256 state = read_property(name, namelen, value, valuelen);
4259 if (state != ERR && ferror(pipe))
4272 static void __NORETURN
4275 /* XXX: Restore tty modes and let the OS cleanup the rest! */
4281 static void __NORETURN
4282 die(const char *err, ...)
4288 va_start(args, err);
4289 fputs("tig: ", stderr);
4290 vfprintf(stderr, err, args);
4291 fputs("\n", stderr);
4298 main(int argc, char *argv[])
4301 enum request request;
4304 signal(SIGINT, quit);
4306 if (setlocale(LC_ALL, "")) {
4307 char *codeset = nl_langinfo(CODESET);
4309 string_ncopy(opt_codeset, codeset, strlen(codeset));
4312 if (load_repo_info() == ERR)
4313 die("Failed to load repo info.");
4315 /* Require a git repository unless when running in pager mode. */
4316 if (!opt_git_dir[0])
4317 die("Not a git repository");
4319 if (load_options() == ERR)
4320 die("Failed to load user config.");
4322 /* Load the repo config file so options can be overwritten from
4323 * the command line. */
4324 if (load_repo_config() == ERR)
4325 die("Failed to load repo config.");
4327 if (!parse_options(argc, argv))
4330 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
4331 opt_iconv = iconv_open(opt_codeset, opt_encoding);
4332 if (opt_iconv == ICONV_NONE)
4333 die("Failed to initialize character set conversion");
4336 if (load_refs() == ERR)
4337 die("Failed to load refs.");
4339 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
4340 view->cmd_env = getenv(view->cmd_env);
4342 request = opt_request;
4346 while (view_driver(display[current_view], request)) {
4350 foreach_view (view, i)
4353 /* Refresh, accept single keystroke of input */
4354 key = wgetch(status_win);
4356 /* wgetch() with nodelay() enabled returns ERR when there's no
4363 request = get_keybinding(display[current_view]->keymap, key);
4365 /* Some low-level request handling. This keeps access to
4366 * status_win restricted. */
4370 char *cmd = read_prompt(":");
4372 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
4373 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
4374 opt_request = REQ_VIEW_DIFF;
4376 opt_request = REQ_VIEW_PAGER;
4385 case REQ_SEARCH_BACK:
4387 const char *prompt = request == REQ_SEARCH
4389 char *search = read_prompt(prompt);
4392 string_ncopy(opt_search, search, strlen(search));
4397 case REQ_SCREEN_RESIZE:
4401 getmaxyx(stdscr, height, width);
4403 /* Resize the status view and let the view driver take
4404 * care of resizing the displayed views. */
4405 wresize(status_win, 1, width);
4406 mvwin(status_win, height - 1, 0);
4407 wrefresh(status_win);