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
2126 view_driver(struct view *view, enum request request)
2130 if (view && view->lines) {
2131 request = view->ops->request(view, request, &view->line[view->lineno]);
2132 if (request == REQ_NONE)
2139 case REQ_MOVE_PAGE_UP:
2140 case REQ_MOVE_PAGE_DOWN:
2141 case REQ_MOVE_FIRST_LINE:
2142 case REQ_MOVE_LAST_LINE:
2143 move_view(view, request);
2146 case REQ_SCROLL_LINE_DOWN:
2147 case REQ_SCROLL_LINE_UP:
2148 case REQ_SCROLL_PAGE_DOWN:
2149 case REQ_SCROLL_PAGE_UP:
2150 scroll_view(view, request);
2155 report("No file chosen, press %s to open tree view",
2156 get_key(REQ_VIEW_TREE));
2159 open_view(view, request, OPEN_DEFAULT);
2162 case REQ_VIEW_PAGER:
2163 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2164 report("No pager content, press %s to run command from prompt",
2165 get_key(REQ_PROMPT));
2168 open_view(view, request, OPEN_DEFAULT);
2176 case REQ_VIEW_STATUS:
2177 open_view(view, request, OPEN_DEFAULT);
2182 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2184 if ((view == VIEW(REQ_VIEW_DIFF) &&
2185 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2186 (view == VIEW(REQ_VIEW_BLOB) &&
2187 view->parent == VIEW(REQ_VIEW_TREE))) {
2190 view = view->parent;
2191 line = view->lineno;
2192 move_view(view, request);
2193 if (view_is_displayed(view))
2194 update_view_title(view);
2195 if (line == view->lineno)
2198 move_view(view, request);
2206 int nviews = displayed_views();
2207 int next_view = (current_view + 1) % nviews;
2209 if (next_view == current_view) {
2210 report("Only one view is displayed");
2214 current_view = next_view;
2215 /* Blur out the title of the previous view. */
2216 update_view_title(view);
2220 case REQ_TOGGLE_LINENO:
2221 opt_line_number = !opt_line_number;
2225 case REQ_TOGGLE_REV_GRAPH:
2226 opt_rev_graph = !opt_rev_graph;
2231 /* Always reload^Wrerun commands from the prompt. */
2232 open_view(view, opt_request, OPEN_RELOAD);
2236 case REQ_SEARCH_BACK:
2237 search_view(view, request);
2242 find_next(view, request);
2245 case REQ_STOP_LOADING:
2246 for (i = 0; i < ARRAY_SIZE(views); i++) {
2249 report("Stopped loading the %s view", view->name),
2254 case REQ_SHOW_VERSION:
2255 report("tig-%s (built %s)", VERSION, __DATE__);
2258 case REQ_SCREEN_RESIZE:
2261 case REQ_SCREEN_REDRAW:
2270 case REQ_VIEW_CLOSE:
2271 /* XXX: Mark closed views by letting view->parent point to the
2272 * view itself. Parents to closed view should never be
2275 view->parent->parent != view->parent) {
2276 memset(display, 0, sizeof(display));
2278 display[current_view] = view->parent;
2279 view->parent = view;
2289 /* An unknown key will show most commonly used commands. */
2290 report("Unknown key, press 'h' for help");
2303 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2305 char *text = line->data;
2306 enum line_type type = line->type;
2307 int textlen = strlen(text);
2310 wmove(view->win, lineno, 0);
2314 wchgat(view->win, -1, 0, type, NULL);
2317 attr = get_line_attr(type);
2318 wattrset(view->win, attr);
2320 if (opt_line_number || opt_tab_size < TABSIZE) {
2321 static char spaces[] = " ";
2322 int col_offset = 0, col = 0;
2324 if (opt_line_number) {
2325 unsigned long real_lineno = view->offset + lineno + 1;
2327 if (real_lineno == 1 ||
2328 (real_lineno % opt_num_interval) == 0) {
2329 wprintw(view->win, "%.*d", view->digits, real_lineno);
2332 waddnstr(view->win, spaces,
2333 MIN(view->digits, STRING_SIZE(spaces)));
2335 waddstr(view->win, ": ");
2336 col_offset = view->digits + 2;
2339 while (text && col_offset + col < view->width) {
2340 int cols_max = view->width - col_offset - col;
2344 if (*text == '\t') {
2346 assert(sizeof(spaces) > TABSIZE);
2348 cols = opt_tab_size - (col % opt_tab_size);
2351 text = strchr(text, '\t');
2352 cols = line ? text - pos : strlen(pos);
2355 waddnstr(view->win, pos, MIN(cols, cols_max));
2360 int col = 0, pos = 0;
2362 for (; pos < textlen && col < view->width; pos++, col++)
2363 if (text[pos] == '\t')
2364 col += TABSIZE - (col % TABSIZE) - 1;
2366 waddnstr(view->win, text, pos);
2373 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2375 char refbuf[SIZEOF_STR];
2379 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2382 pipe = popen(refbuf, "r");
2386 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2387 ref = chomp_string(ref);
2393 /* This is the only fatal call, since it can "corrupt" the buffer. */
2394 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2401 add_pager_refs(struct view *view, struct line *line)
2403 char buf[SIZEOF_STR];
2404 char *commit_id = line->data + STRING_SIZE("commit ");
2406 size_t bufpos = 0, refpos = 0;
2407 const char *sep = "Refs: ";
2408 bool is_tag = FALSE;
2410 assert(line->type == LINE_COMMIT);
2412 refs = get_refs(commit_id);
2414 if (view == VIEW(REQ_VIEW_DIFF))
2415 goto try_add_describe_ref;
2420 struct ref *ref = refs[refpos];
2421 char *fmt = ref->tag ? "%s[%s]" :
2422 ref->remote ? "%s<%s>" : "%s%s";
2424 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2429 } while (refs[refpos++]->next);
2431 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2432 try_add_describe_ref:
2433 /* Add <tag>-g<commit_id> "fake" reference. */
2434 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2441 if (!realloc_lines(view, view->line_size + 1))
2444 add_line_text(view, buf, LINE_PP_REFS);
2448 pager_read(struct view *view, char *data)
2455 line = add_line_text(view, data, get_line_type(data));
2459 if (line->type == LINE_COMMIT &&
2460 (view == VIEW(REQ_VIEW_DIFF) ||
2461 view == VIEW(REQ_VIEW_LOG)))
2462 add_pager_refs(view, line);
2468 pager_request(struct view *view, enum request request, struct line *line)
2472 if (request != REQ_ENTER)
2475 if (line->type == LINE_COMMIT &&
2476 (view == VIEW(REQ_VIEW_LOG) ||
2477 view == VIEW(REQ_VIEW_PAGER))) {
2478 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2482 /* Always scroll the view even if it was split. That way
2483 * you can use Enter to scroll through the log view and
2484 * split open each commit diff. */
2485 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2487 /* FIXME: A minor workaround. Scrolling the view will call report("")
2488 * but if we are scrolling a non-current view this won't properly
2489 * update the view title. */
2491 update_view_title(view);
2497 pager_grep(struct view *view, struct line *line)
2500 char *text = line->data;
2505 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2512 pager_select(struct view *view, struct line *line)
2514 if (line->type == LINE_COMMIT) {
2515 char *text = line->data + STRING_SIZE("commit ");
2517 if (view != VIEW(REQ_VIEW_PAGER))
2518 string_copy_rev(view->ref, text);
2519 string_copy_rev(ref_commit, text);
2523 static struct view_ops pager_ops = {
2539 help_open(struct view *view)
2542 int lines = ARRAY_SIZE(req_info) + 2;
2545 if (view->lines > 0)
2548 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2549 if (!req_info[i].request)
2552 view->line = calloc(lines, sizeof(*view->line));
2556 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2558 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2561 if (!req_info[i].request) {
2562 add_line_text(view, "", LINE_DEFAULT);
2563 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2567 key = get_key(req_info[i].request);
2568 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
2571 add_line_text(view, buf, LINE_DEFAULT);
2577 static struct view_ops help_ops = {
2592 /* Parse output from git-ls-tree(1):
2594 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2595 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2596 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2597 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2600 #define SIZEOF_TREE_ATTR \
2601 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2603 #define TREE_UP_FORMAT "040000 tree %s\t.."
2606 tree_compare_entry(enum line_type type1, char *name1,
2607 enum line_type type2, char *name2)
2609 if (type1 != type2) {
2610 if (type1 == LINE_TREE_DIR)
2615 return strcmp(name1, name2);
2619 tree_read(struct view *view, char *text)
2621 size_t textlen = text ? strlen(text) : 0;
2622 char buf[SIZEOF_STR];
2624 enum line_type type;
2625 bool first_read = view->lines == 0;
2627 if (textlen <= SIZEOF_TREE_ATTR)
2630 type = text[STRING_SIZE("100644 ")] == 't'
2631 ? LINE_TREE_DIR : LINE_TREE_FILE;
2634 /* Add path info line */
2635 if (!string_format(buf, "Directory path /%s", opt_path) ||
2636 !realloc_lines(view, view->line_size + 1) ||
2637 !add_line_text(view, buf, LINE_DEFAULT))
2640 /* Insert "link" to parent directory. */
2642 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2643 !realloc_lines(view, view->line_size + 1) ||
2644 !add_line_text(view, buf, LINE_TREE_DIR))
2649 /* Strip the path part ... */
2651 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2652 size_t striplen = strlen(opt_path);
2653 char *path = text + SIZEOF_TREE_ATTR;
2655 if (pathlen > striplen)
2656 memmove(path, path + striplen,
2657 pathlen - striplen + 1);
2660 /* Skip "Directory ..." and ".." line. */
2661 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2662 struct line *line = &view->line[pos];
2663 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2664 char *path2 = text + SIZEOF_TREE_ATTR;
2665 int cmp = tree_compare_entry(line->type, path1, type, path2);
2670 text = strdup(text);
2674 if (view->lines > pos)
2675 memmove(&view->line[pos + 1], &view->line[pos],
2676 (view->lines - pos) * sizeof(*line));
2678 line = &view->line[pos];
2685 if (!add_line_text(view, text, type))
2688 /* Move the current line to the first tree entry. */
2696 tree_request(struct view *view, enum request request, struct line *line)
2698 enum open_flags flags;
2700 if (request != REQ_ENTER)
2703 switch (line->type) {
2705 /* Depending on whether it is a subdir or parent (updir?) link
2706 * mangle the path buffer. */
2707 if (line == &view->line[1] && *opt_path) {
2708 size_t path_len = strlen(opt_path);
2709 char *dirsep = opt_path + path_len - 1;
2711 while (dirsep > opt_path && dirsep[-1] != '/')
2717 size_t pathlen = strlen(opt_path);
2718 size_t origlen = pathlen;
2719 char *data = line->data;
2720 char *basename = data + SIZEOF_TREE_ATTR;
2722 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2723 opt_path[origlen] = 0;
2728 /* Trees and subtrees share the same ID, so they are not not
2729 * unique like blobs. */
2730 flags = OPEN_RELOAD;
2731 request = REQ_VIEW_TREE;
2734 case LINE_TREE_FILE:
2735 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2736 request = REQ_VIEW_BLOB;
2743 open_view(view, request, flags);
2749 tree_select(struct view *view, struct line *line)
2751 char *text = line->data + STRING_SIZE("100644 blob ");
2753 if (line->type == LINE_TREE_FILE) {
2754 string_copy_rev(ref_blob, text);
2756 } else if (line->type != LINE_TREE_DIR) {
2760 string_copy_rev(view->ref, text);
2763 static struct view_ops tree_ops = {
2774 blob_read(struct view *view, char *line)
2776 return add_line_text(view, line, LINE_DEFAULT);
2779 static struct view_ops blob_ops = {
2798 char rev[SIZEOF_REV];
2802 char rev[SIZEOF_REV];
2804 char name[SIZEOF_STR];
2807 /* Get fields from the diff line:
2808 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
2811 status_get_diff(struct status *file, char *buf, size_t bufsize)
2813 char *old_mode = buf + 1;
2814 char *new_mode = buf + 8;
2815 char *old_rev = buf + 15;
2816 char *new_rev = buf + 56;
2817 char *status = buf + 97;
2819 if (bufsize != 99 ||
2820 old_mode[-1] != ':' ||
2821 new_mode[-1] != ' ' ||
2822 old_rev[-1] != ' ' ||
2823 new_rev[-1] != ' ' ||
2827 file->status = *status;
2829 string_copy_rev(file->old.rev, old_rev);
2830 string_copy_rev(file->new.rev, new_rev);
2832 file->old.mode = strtoul(old_mode, NULL, 8);
2833 file->new.mode = strtoul(new_mode, NULL, 8);
2841 status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
2843 struct status *file = NULL;
2844 char buf[SIZEOF_STR * 4];
2848 pipe = popen(cmd, "r");
2852 add_line_data(view, NULL, type);
2854 while (!feof(pipe) && !ferror(pipe)) {
2858 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
2861 bufsize += readsize;
2863 /* Process while we have NUL chars. */
2864 while ((sep = memchr(buf, 0, bufsize))) {
2865 size_t sepsize = sep - buf + 1;
2868 if (!realloc_lines(view, view->line_size + 1))
2871 file = calloc(1, sizeof(*file));
2875 add_line_data(view, file, type);
2878 /* Parse diff info part. */
2882 } else if (!file->status) {
2883 if (!status_get_diff(file, buf, sepsize))
2887 memmove(buf, sep + 1, bufsize);
2889 sep = memchr(buf, 0, bufsize);
2892 sepsize = sep - buf + 1;
2895 /* git-ls-files just delivers a NUL separated
2896 * list of file names similar to the second half
2897 * of the git-diff-* output. */
2898 string_ncopy(file->name, buf, sepsize);
2900 memmove(buf, sep + 1, bufsize);
2911 if (!view->line[view->lines - 1].data)
2912 add_line_data(view, NULL, LINE_STAT_NONE);
2918 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --cached HEAD"
2919 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
2920 #define STATUS_LIST_OTHER_CMD \
2921 "git ls-files -z --others --exclude-per-directory=.gitignore"
2923 #define STATUS_DIFF_SHOW_CMD \
2924 "git diff --root --patch-with-stat --find-copies-harder -B -C %s -- %s 2>/dev/null"
2926 /* First parse staged info using git-diff-index(1), then parse unstaged
2927 * info using git-diff-files(1), and finally untracked files using
2928 * git-ls-files(1). */
2930 status_open(struct view *view)
2932 struct stat statbuf;
2933 char exclude[SIZEOF_STR];
2934 char cmd[SIZEOF_STR];
2937 for (i = 0; i < view->lines; i++)
2938 free(view->line[i].data);
2940 view->lines = view->line_size = 0;
2943 if (!realloc_lines(view, view->line_size + 6))
2946 if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
2949 string_copy(cmd, STATUS_LIST_OTHER_CMD);
2951 if (stat(exclude, &statbuf) >= 0) {
2952 size_t cmdsize = strlen(cmd);
2954 if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
2955 sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
2959 if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
2960 !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
2961 !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
2968 status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2970 struct status *status = line->data;
2972 wmove(view->win, lineno, 0);
2975 wattrset(view->win, get_line_attr(LINE_CURSOR));
2976 wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
2978 } else if (!status && line->type != LINE_STAT_NONE) {
2979 wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
2980 wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
2983 wattrset(view->win, get_line_attr(line->type));
2989 switch (line->type) {
2990 case LINE_STAT_STAGED:
2991 text = "Changes to be committed:";
2994 case LINE_STAT_UNSTAGED:
2995 text = "Changed but not updated:";
2998 case LINE_STAT_UNTRACKED:
2999 text = "Untracked files:";
3002 case LINE_STAT_NONE:
3003 text = " (no files)";
3010 waddstr(view->win, text);
3014 waddch(view->win, status->status);
3016 wattrset(view->win, A_NORMAL);
3017 wmove(view->win, lineno, 4);
3018 waddstr(view->win, status->name);
3024 status_enter(struct view *view, struct line *line)
3026 struct status *status = line->data;
3027 char path[SIZEOF_STR] = "";
3031 if (line->type == LINE_STAT_NONE ||
3032 (!status && line[1].type == LINE_STAT_NONE)) {
3033 report("No file to diff");
3037 if (status && sq_quote(path, 0, status->name) >= sizeof(path))
3041 line->type != LINE_STAT_UNTRACKED &&
3042 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
3045 switch (line->type) {
3046 case LINE_STAT_STAGED:
3047 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3051 info = "Staged changes to %s";
3053 info = "Staged changes";
3056 case LINE_STAT_UNSTAGED:
3057 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3061 info = "Unstaged changes to %s";
3063 info = "Unstaged changes";
3066 case LINE_STAT_UNTRACKED:
3072 report("No file to show");
3076 opt_pipe = fopen(status->name, "r");
3077 info = "Untracked file %s";
3084 open_view(view, REQ_VIEW_DIFF, OPEN_RELOAD | OPEN_SPLIT);
3085 if (view_is_displayed(VIEW(REQ_VIEW_DIFF))) {
3086 string_format(VIEW(REQ_VIEW_DIFF)->ref, info, status->name);
3094 status_update_file(struct view *view, struct status *status, enum line_type type)
3096 char cmd[SIZEOF_STR];
3097 char buf[SIZEOF_STR];
3104 type != LINE_STAT_UNTRACKED &&
3105 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
3109 case LINE_STAT_STAGED:
3110 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
3116 string_add(cmd, cmdsize, "git update-index -z --index-info");
3119 case LINE_STAT_UNSTAGED:
3120 case LINE_STAT_UNTRACKED:
3121 if (!string_format_from(buf, &bufsize, "%s%c", status->name, 0))
3124 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
3131 pipe = popen(cmd, "w");
3135 while (!ferror(pipe) && written < bufsize) {
3136 written += fwrite(buf + written, 1, bufsize - written, pipe);
3141 if (written != bufsize)
3148 status_update(struct view *view)
3150 struct line *line = &view->line[view->lineno];
3152 assert(view->lines);
3155 while (++line < view->line + view->lines && line->data) {
3156 if (!status_update_file(view, line->data, line->type))
3157 report("Failed to update file status");
3160 if (!line[-1].data) {
3161 report("Nothing to update");
3165 } else if (!status_update_file(view, line->data, line->type)) {
3166 report("Failed to update file status");
3169 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
3173 status_request(struct view *view, enum request request, struct line *line)
3176 case REQ_STATUS_UPDATE:
3177 status_update(view);
3181 status_enter(view, line);
3192 status_select(struct view *view, struct line *line)
3194 struct status *status = line->data;
3195 char file[SIZEOF_STR] = "all files";
3198 if (status && !string_format(file, "'%s'", status->name))
3201 if (!status && line[1].type == LINE_STAT_NONE)
3204 switch (line->type) {
3205 case LINE_STAT_STAGED:
3206 text = "Press %s to unstage %s for commit";
3209 case LINE_STAT_UNSTAGED:
3210 text = "Press %s to stage %s for commit";
3213 case LINE_STAT_UNTRACKED:
3214 text = "Press %s to stage %s for addition";
3217 case LINE_STAT_NONE:
3218 text = "Nothing to update";
3225 string_format(view->ref, text, get_key(REQ_STATUS_UPDATE), file);
3229 status_grep(struct view *view, struct line *line)
3231 struct status *status = line->data;
3232 enum { S_STATUS, S_NAME, S_END } state;
3239 for (state = S_STATUS; state < S_END; state++) {
3243 case S_NAME: text = status->name; break;
3245 buf[0] = status->status;
3253 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3260 static struct view_ops status_ops = {
3276 char id[SIZEOF_REV]; /* SHA1 ID. */
3277 char title[128]; /* First line of the commit message. */
3278 char author[75]; /* Author of the commit. */
3279 struct tm time; /* Date from the author ident. */
3280 struct ref **refs; /* Repository references. */
3281 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
3282 size_t graph_size; /* The width of the graph array. */
3285 /* Size of rev graph with no "padding" columns */
3286 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
3289 struct rev_graph *prev, *next, *parents;
3290 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
3292 struct commit *commit;
3296 /* Parents of the commit being visualized. */
3297 static struct rev_graph graph_parents[4];
3299 /* The current stack of revisions on the graph. */
3300 static struct rev_graph graph_stacks[4] = {
3301 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
3302 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
3303 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
3304 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
3308 graph_parent_is_merge(struct rev_graph *graph)
3310 return graph->parents->size > 1;
3314 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
3316 struct commit *commit = graph->commit;
3318 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
3319 commit->graph[commit->graph_size++] = symbol;
3323 done_rev_graph(struct rev_graph *graph)
3325 if (graph_parent_is_merge(graph) &&
3326 graph->pos < graph->size - 1 &&
3327 graph->next->size == graph->size + graph->parents->size - 1) {
3328 size_t i = graph->pos + graph->parents->size - 1;
3330 graph->commit->graph_size = i * 2;
3331 while (i < graph->next->size - 1) {
3332 append_to_rev_graph(graph, ' ');
3333 append_to_rev_graph(graph, '\\');
3338 graph->size = graph->pos = 0;
3339 graph->commit = NULL;
3340 memset(graph->parents, 0, sizeof(*graph->parents));
3344 push_rev_graph(struct rev_graph *graph, char *parent)
3348 /* "Collapse" duplicate parents lines.
3350 * FIXME: This needs to also update update the drawn graph but
3351 * for now it just serves as a method for pruning graph lines. */
3352 for (i = 0; i < graph->size; i++)
3353 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
3356 if (graph->size < SIZEOF_REVITEMS) {
3357 string_copy_rev(graph->rev[graph->size++], parent);
3362 get_rev_graph_symbol(struct rev_graph *graph)
3366 if (graph->parents->size == 0)
3367 symbol = REVGRAPH_INIT;
3368 else if (graph_parent_is_merge(graph))
3369 symbol = REVGRAPH_MERGE;
3370 else if (graph->pos >= graph->size)
3371 symbol = REVGRAPH_BRANCH;
3373 symbol = REVGRAPH_COMMIT;
3379 draw_rev_graph(struct rev_graph *graph)
3382 chtype separator, line;
3384 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
3385 static struct rev_filler fillers[] = {
3386 { ' ', REVGRAPH_LINE },
3391 chtype symbol = get_rev_graph_symbol(graph);
3392 struct rev_filler *filler;
3395 filler = &fillers[DEFAULT];
3397 for (i = 0; i < graph->pos; i++) {
3398 append_to_rev_graph(graph, filler->line);
3399 if (graph_parent_is_merge(graph->prev) &&
3400 graph->prev->pos == i)
3401 filler = &fillers[RSHARP];
3403 append_to_rev_graph(graph, filler->separator);
3406 /* Place the symbol for this revision. */
3407 append_to_rev_graph(graph, symbol);
3409 if (graph->prev->size > graph->size)
3410 filler = &fillers[RDIAG];
3412 filler = &fillers[DEFAULT];
3416 for (; i < graph->size; i++) {
3417 append_to_rev_graph(graph, filler->separator);
3418 append_to_rev_graph(graph, filler->line);
3419 if (graph_parent_is_merge(graph->prev) &&
3420 i < graph->prev->pos + graph->parents->size)
3421 filler = &fillers[RSHARP];
3422 if (graph->prev->size > graph->size)
3423 filler = &fillers[LDIAG];
3426 if (graph->prev->size > graph->size) {
3427 append_to_rev_graph(graph, filler->separator);
3428 if (filler->line != ' ')
3429 append_to_rev_graph(graph, filler->line);
3433 /* Prepare the next rev graph */
3435 prepare_rev_graph(struct rev_graph *graph)
3439 /* First, traverse all lines of revisions up to the active one. */
3440 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
3441 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
3444 push_rev_graph(graph->next, graph->rev[graph->pos]);
3447 /* Interleave the new revision parent(s). */
3448 for (i = 0; i < graph->parents->size; i++)
3449 push_rev_graph(graph->next, graph->parents->rev[i]);
3451 /* Lastly, put any remaining revisions. */
3452 for (i = graph->pos + 1; i < graph->size; i++)
3453 push_rev_graph(graph->next, graph->rev[i]);
3457 update_rev_graph(struct rev_graph *graph)
3459 /* If this is the finalizing update ... */
3461 prepare_rev_graph(graph);
3463 /* Graph visualization needs a one rev look-ahead,
3464 * so the first update doesn't visualize anything. */
3465 if (!graph->prev->commit)
3468 draw_rev_graph(graph->prev);
3469 done_rev_graph(graph->prev->prev);
3478 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3480 char buf[DATE_COLS + 1];
3481 struct commit *commit = line->data;
3482 enum line_type type;
3488 if (!*commit->author)
3491 wmove(view->win, lineno, col);
3495 wattrset(view->win, get_line_attr(type));
3496 wchgat(view->win, -1, 0, type, NULL);
3499 type = LINE_MAIN_COMMIT;
3500 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
3503 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
3504 waddnstr(view->win, buf, timelen);
3505 waddstr(view->win, " ");
3508 wmove(view->win, lineno, col);
3509 if (type != LINE_CURSOR)
3510 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
3513 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
3515 authorlen = strlen(commit->author);
3516 if (authorlen > AUTHOR_COLS - 2) {
3517 authorlen = AUTHOR_COLS - 2;
3523 waddnstr(view->win, commit->author, authorlen);
3524 if (type != LINE_CURSOR)
3525 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
3526 waddch(view->win, '~');
3528 waddstr(view->win, commit->author);
3532 if (type != LINE_CURSOR)
3533 wattrset(view->win, A_NORMAL);
3535 if (opt_rev_graph && commit->graph_size) {
3538 wmove(view->win, lineno, col);
3539 /* Using waddch() instead of waddnstr() ensures that
3540 * they'll be rendered correctly for the cursor line. */
3541 for (i = 0; i < commit->graph_size; i++)
3542 waddch(view->win, commit->graph[i]);
3544 waddch(view->win, ' ');
3545 col += commit->graph_size + 1;
3548 wmove(view->win, lineno, col);
3554 if (type == LINE_CURSOR)
3556 else if (commit->refs[i]->tag)
3557 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
3558 else if (commit->refs[i]->remote)
3559 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
3561 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3562 waddstr(view->win, "[");
3563 waddstr(view->win, commit->refs[i]->name);
3564 waddstr(view->win, "]");
3565 if (type != LINE_CURSOR)
3566 wattrset(view->win, A_NORMAL);
3567 waddstr(view->win, " ");
3568 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3569 } while (commit->refs[i++]->next);
3572 if (type != LINE_CURSOR)
3573 wattrset(view->win, get_line_attr(type));
3576 int titlelen = strlen(commit->title);
3578 if (col + titlelen > view->width)
3579 titlelen = view->width - col;
3581 waddnstr(view->win, commit->title, titlelen);
3587 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3589 main_read(struct view *view, char *line)
3591 static struct rev_graph *graph = graph_stacks;
3592 enum line_type type;
3593 struct commit *commit;
3596 update_rev_graph(graph);
3600 type = get_line_type(line);
3601 if (type == LINE_COMMIT) {
3602 commit = calloc(1, sizeof(struct commit));
3606 string_copy_rev(commit->id, line + STRING_SIZE("commit "));
3607 commit->refs = get_refs(commit->id);
3608 graph->commit = commit;
3609 add_line_data(view, commit, LINE_MAIN_COMMIT);
3615 commit = view->line[view->lines - 1].data;
3619 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
3624 /* Parse author lines where the name may be empty:
3625 * author <email@address.tld> 1138474660 +0100
3627 char *ident = line + STRING_SIZE("author ");
3628 char *nameend = strchr(ident, '<');
3629 char *emailend = strchr(ident, '>');
3631 if (!nameend || !emailend)
3634 update_rev_graph(graph);
3635 graph = graph->next;
3637 *nameend = *emailend = 0;
3638 ident = chomp_string(ident);
3640 ident = chomp_string(nameend + 1);
3645 string_ncopy(commit->author, ident, strlen(ident));
3647 /* Parse epoch and timezone */
3648 if (emailend[1] == ' ') {
3649 char *secs = emailend + 2;
3650 char *zone = strchr(secs, ' ');
3651 time_t time = (time_t) atol(secs);
3653 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3657 tz = ('0' - zone[1]) * 60 * 60 * 10;
3658 tz += ('0' - zone[2]) * 60 * 60;
3659 tz += ('0' - zone[3]) * 60;
3660 tz += ('0' - zone[4]) * 60;
3668 gmtime_r(&time, &commit->time);
3673 /* Fill in the commit title if it has not already been set. */
3674 if (commit->title[0])
3677 /* Require titles to start with a non-space character at the
3678 * offset used by git log. */
3679 if (strncmp(line, " ", 4))
3682 /* Well, if the title starts with a whitespace character,
3683 * try to be forgiving. Otherwise we end up with no title. */
3684 while (isspace(*line))
3688 /* FIXME: More graceful handling of titles; append "..." to
3689 * shortened titles, etc. */
3691 string_ncopy(commit->title, line, strlen(line));
3698 main_request(struct view *view, enum request request, struct line *line)
3700 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3702 if (request == REQ_ENTER)
3703 open_view(view, REQ_VIEW_DIFF, flags);
3711 main_grep(struct view *view, struct line *line)
3713 struct commit *commit = line->data;
3714 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3715 char buf[DATE_COLS + 1];
3718 for (state = S_TITLE; state < S_END; state++) {
3722 case S_TITLE: text = commit->title; break;
3723 case S_AUTHOR: text = commit->author; break;
3725 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3734 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3742 main_select(struct view *view, struct line *line)
3744 struct commit *commit = line->data;
3746 string_copy_rev(view->ref, commit->id);
3747 string_copy_rev(ref_commit, view->ref);
3750 static struct view_ops main_ops = {
3762 * Unicode / UTF-8 handling
3764 * NOTE: Much of the following code for dealing with unicode is derived from
3765 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3766 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3769 /* I've (over)annotated a lot of code snippets because I am not entirely
3770 * confident that the approach taken by this small UTF-8 interface is correct.
3774 unicode_width(unsigned long c)
3777 (c <= 0x115f /* Hangul Jamo */
3780 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3782 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3783 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3784 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3785 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3786 || (c >= 0xffe0 && c <= 0xffe6)
3787 || (c >= 0x20000 && c <= 0x2fffd)
3788 || (c >= 0x30000 && c <= 0x3fffd)))
3794 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3795 * Illegal bytes are set one. */
3796 static const unsigned char utf8_bytes[256] = {
3797 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,
3798 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,
3799 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,
3800 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,
3801 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,
3802 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,
3803 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,
3804 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,
3807 /* Decode UTF-8 multi-byte representation into a unicode character. */
3808 static inline unsigned long
3809 utf8_to_unicode(const char *string, size_t length)
3811 unsigned long unicode;
3815 unicode = string[0];
3818 unicode = (string[0] & 0x1f) << 6;
3819 unicode += (string[1] & 0x3f);
3822 unicode = (string[0] & 0x0f) << 12;
3823 unicode += ((string[1] & 0x3f) << 6);
3824 unicode += (string[2] & 0x3f);
3827 unicode = (string[0] & 0x0f) << 18;
3828 unicode += ((string[1] & 0x3f) << 12);
3829 unicode += ((string[2] & 0x3f) << 6);
3830 unicode += (string[3] & 0x3f);
3833 unicode = (string[0] & 0x0f) << 24;
3834 unicode += ((string[1] & 0x3f) << 18);
3835 unicode += ((string[2] & 0x3f) << 12);
3836 unicode += ((string[3] & 0x3f) << 6);
3837 unicode += (string[4] & 0x3f);
3840 unicode = (string[0] & 0x01) << 30;
3841 unicode += ((string[1] & 0x3f) << 24);
3842 unicode += ((string[2] & 0x3f) << 18);
3843 unicode += ((string[3] & 0x3f) << 12);
3844 unicode += ((string[4] & 0x3f) << 6);
3845 unicode += (string[5] & 0x3f);
3848 die("Invalid unicode length");
3851 /* Invalid characters could return the special 0xfffd value but NUL
3852 * should be just as good. */
3853 return unicode > 0xffff ? 0 : unicode;
3856 /* Calculates how much of string can be shown within the given maximum width
3857 * and sets trimmed parameter to non-zero value if all of string could not be
3860 * Additionally, adds to coloffset how many many columns to move to align with
3861 * the expected position. Takes into account how multi-byte and double-width
3862 * characters will effect the cursor position.
3864 * Returns the number of bytes to output from string to satisfy max_width. */
3866 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3868 const char *start = string;
3869 const char *end = strchr(string, '\0');
3875 while (string < end) {
3876 int c = *(unsigned char *) string;
3877 unsigned char bytes = utf8_bytes[c];
3879 unsigned long unicode;
3881 if (string + bytes > end)
3884 /* Change representation to figure out whether
3885 * it is a single- or double-width character. */
3887 unicode = utf8_to_unicode(string, bytes);
3888 /* FIXME: Graceful handling of invalid unicode character. */
3892 ucwidth = unicode_width(unicode);
3894 if (width > max_width) {
3899 /* The column offset collects the differences between the
3900 * number of bytes encoding a character and the number of
3901 * columns will be used for rendering said character.
3903 * So if some character A is encoded in 2 bytes, but will be
3904 * represented on the screen using only 1 byte this will and up
3905 * adding 1 to the multi-byte column offset.
3907 * Assumes that no double-width character can be encoding in
3908 * less than two bytes. */
3909 if (bytes > ucwidth)
3910 mbwidth += bytes - ucwidth;
3915 *coloffset += mbwidth;
3917 return string - start;
3925 /* Whether or not the curses interface has been initialized. */
3926 static bool cursed = FALSE;
3928 /* The status window is used for polling keystrokes. */
3929 static WINDOW *status_win;
3931 static bool status_empty = TRUE;
3933 /* Update status and title window. */
3935 report(const char *msg, ...)
3937 struct view *view = display[current_view];
3942 if (!status_empty || *msg) {
3945 va_start(args, msg);
3947 wmove(status_win, 0, 0);
3949 vwprintw(status_win, msg, args);
3950 status_empty = FALSE;
3952 status_empty = TRUE;
3954 wclrtoeol(status_win);
3955 wrefresh(status_win);
3960 update_view_title(view);
3961 update_display_cursor(view);
3964 /* Controls when nodelay should be in effect when polling user input. */
3966 set_nonblocking_input(bool loading)
3968 static unsigned int loading_views;
3970 if ((loading == FALSE && loading_views-- == 1) ||
3971 (loading == TRUE && loading_views++ == 0))
3972 nodelay(status_win, loading);
3980 /* Initialize the curses library */
3981 if (isatty(STDIN_FILENO)) {
3982 cursed = !!initscr();
3984 /* Leave stdin and stdout alone when acting as a pager. */
3985 FILE *io = fopen("/dev/tty", "r+");
3988 die("Failed to open /dev/tty");
3989 cursed = !!newterm(NULL, io, io);
3993 die("Failed to initialize curses");
3995 nonl(); /* Tell curses not to do NL->CR/NL on output */
3996 cbreak(); /* Take input chars one at a time, no wait for \n */
3997 noecho(); /* Don't echo input */
3998 leaveok(stdscr, TRUE);
4003 getmaxyx(stdscr, y, x);
4004 status_win = newwin(1, 0, y - 1, 0);
4006 die("Failed to create status window");
4008 /* Enable keyboard mapping */
4009 keypad(status_win, TRUE);
4010 wbkgdset(status_win, get_line_attr(LINE_STATUS));
4014 read_prompt(const char *prompt)
4016 enum { READING, STOP, CANCEL } status = READING;
4017 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
4020 while (status == READING) {
4026 foreach_view (view, i)
4031 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
4032 wclrtoeol(status_win);
4034 /* Refresh, accept single keystroke of input */
4035 key = wgetch(status_win);
4040 status = pos ? STOP : CANCEL;
4058 if (pos >= sizeof(buf)) {
4059 report("Input string too long");
4064 buf[pos++] = (char) key;
4068 /* Clear the status window */
4069 status_empty = FALSE;
4072 if (status == CANCEL)
4081 * Repository references
4084 static struct ref *refs;
4085 static size_t refs_size;
4087 /* Id <-> ref store */
4088 static struct ref ***id_refs;
4089 static size_t id_refs_size;
4091 static struct ref **
4094 struct ref ***tmp_id_refs;
4095 struct ref **ref_list = NULL;
4096 size_t ref_list_size = 0;
4099 for (i = 0; i < id_refs_size; i++)
4100 if (!strcmp(id, id_refs[i][0]->id))
4103 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
4107 id_refs = tmp_id_refs;
4109 for (i = 0; i < refs_size; i++) {
4112 if (strcmp(id, refs[i].id))
4115 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
4123 if (ref_list_size > 0)
4124 ref_list[ref_list_size - 1]->next = 1;
4125 ref_list[ref_list_size] = &refs[i];
4127 /* XXX: The properties of the commit chains ensures that we can
4128 * safely modify the shared ref. The repo references will
4129 * always be similar for the same id. */
4130 ref_list[ref_list_size]->next = 0;
4135 id_refs[id_refs_size++] = ref_list;
4141 read_ref(char *id, size_t idlen, char *name, size_t namelen)
4145 bool remote = FALSE;
4147 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
4148 /* Commits referenced by tags has "^{}" appended. */
4149 if (name[namelen - 1] != '}')
4152 while (namelen > 0 && name[namelen] != '^')
4156 namelen -= STRING_SIZE("refs/tags/");
4157 name += STRING_SIZE("refs/tags/");
4159 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
4161 namelen -= STRING_SIZE("refs/remotes/");
4162 name += STRING_SIZE("refs/remotes/");
4164 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
4165 namelen -= STRING_SIZE("refs/heads/");
4166 name += STRING_SIZE("refs/heads/");
4168 } else if (!strcmp(name, "HEAD")) {
4172 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
4176 ref = &refs[refs_size++];
4177 ref->name = malloc(namelen + 1);
4181 strncpy(ref->name, name, namelen);
4182 ref->name[namelen] = 0;
4184 ref->remote = remote;
4185 string_copy_rev(ref->id, id);
4193 const char *cmd_env = getenv("TIG_LS_REMOTE");
4194 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
4196 return read_properties(popen(cmd, "r"), "\t", read_ref);
4200 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
4202 if (!strcmp(name, "i18n.commitencoding"))
4203 string_ncopy(opt_encoding, value, valuelen);
4209 load_repo_config(void)
4211 return read_properties(popen("git repo-config --list", "r"),
4212 "=", read_repo_config_option);
4216 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
4218 if (!opt_git_dir[0])
4219 string_ncopy(opt_git_dir, name, namelen);
4221 string_ncopy(opt_cdup, name, namelen);
4225 /* XXX: The line outputted by "--show-cdup" can be empty so the option
4226 * must be the last one! */
4228 load_repo_info(void)
4230 return read_properties(popen("git rev-parse --git-dir --show-cdup 2>/dev/null", "r"),
4231 "=", read_repo_info);
4235 read_properties(FILE *pipe, const char *separators,
4236 int (*read_property)(char *, size_t, char *, size_t))
4238 char buffer[BUFSIZ];
4245 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
4250 name = chomp_string(name);
4251 namelen = strcspn(name, separators);
4253 if (name[namelen]) {
4255 value = chomp_string(name + namelen + 1);
4256 valuelen = strlen(value);
4263 state = read_property(name, namelen, value, valuelen);
4266 if (state != ERR && ferror(pipe))
4279 static void __NORETURN
4282 /* XXX: Restore tty modes and let the OS cleanup the rest! */
4288 static void __NORETURN
4289 die(const char *err, ...)
4295 va_start(args, err);
4296 fputs("tig: ", stderr);
4297 vfprintf(stderr, err, args);
4298 fputs("\n", stderr);
4305 main(int argc, char *argv[])
4308 enum request request;
4311 signal(SIGINT, quit);
4313 if (setlocale(LC_ALL, "")) {
4314 char *codeset = nl_langinfo(CODESET);
4316 string_ncopy(opt_codeset, codeset, strlen(codeset));
4319 if (load_repo_info() == ERR)
4320 die("Failed to load repo info.");
4322 /* Require a git repository unless when running in pager mode. */
4323 if (!opt_git_dir[0])
4324 die("Not a git repository");
4326 if (load_options() == ERR)
4327 die("Failed to load user config.");
4329 /* Load the repo config file so options can be overwritten from
4330 * the command line. */
4331 if (load_repo_config() == ERR)
4332 die("Failed to load repo config.");
4334 if (!parse_options(argc, argv))
4337 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
4338 opt_iconv = iconv_open(opt_codeset, opt_encoding);
4339 if (opt_iconv == ICONV_NONE)
4340 die("Failed to initialize character set conversion");
4343 if (load_refs() == ERR)
4344 die("Failed to load refs.");
4346 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
4347 view->cmd_env = getenv(view->cmd_env);
4349 request = opt_request;
4353 while (view_driver(display[current_view], request)) {
4357 foreach_view (view, i)
4360 /* Refresh, accept single keystroke of input */
4361 key = wgetch(status_win);
4363 /* wgetch() with nodelay() enabled returns ERR when there's no
4370 request = get_keybinding(display[current_view]->keymap, key);
4372 /* Some low-level request handling. This keeps access to
4373 * status_win restricted. */
4377 char *cmd = read_prompt(":");
4379 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
4380 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
4381 opt_request = REQ_VIEW_DIFF;
4383 opt_request = REQ_VIEW_PAGER;
4392 case REQ_SEARCH_BACK:
4394 const char *prompt = request == REQ_SEARCH
4396 char *search = read_prompt(prompt);
4399 string_ncopy(opt_search, search, strlen(search));
4404 case REQ_SCREEN_RESIZE:
4408 getmaxyx(stdscr, height, width);
4410 /* Resize the status view and let the view driver take
4411 * care of resizing the displayed views. */
4412 wresize(status_win, 1, width);
4413 mvwin(status_win, height - 1, 0);
4414 wrefresh(status_win);