1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #define VERSION "tig-0.6.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
66 #define REVGRAPH_INIT 'I'
67 #define REVGRAPH_MERGE 'M'
68 #define REVGRAPH_BRANCH '+'
69 #define REVGRAPH_COMMIT '*'
70 #define REVGRAPH_LINE '|'
72 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
74 /* This color name can be used to refer to the default term colors. */
75 #define COLOR_DEFAULT (-1)
77 #define ICONV_NONE ((iconv_t) -1)
79 /* The format and size of the date column in the main view. */
80 #define DATE_FORMAT "%Y-%m-%d %H:%M"
81 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
83 #define AUTHOR_COLS 20
85 /* The default interval between line numbers. */
86 #define NUMBER_INTERVAL 1
90 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
92 #define TIG_LS_REMOTE \
93 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
95 #define TIG_DIFF_CMD \
96 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
99 "git log --cc --stat -n100 %s 2>/dev/null"
101 #define TIG_MAIN_CMD \
102 "git log --topo-order --pretty=raw %s 2>/dev/null"
104 #define TIG_TREE_CMD \
107 #define TIG_BLOB_CMD \
108 "git cat-file blob %s"
110 /* XXX: Needs to be defined to the empty string. */
111 #define TIG_HELP_CMD ""
112 #define TIG_PAGER_CMD ""
114 /* Some ascii-shorthands fitted into the ncurses namespace. */
116 #define KEY_RETURN '\r'
121 char *name; /* Ref name; tag or head names are shortened. */
122 char id[SIZEOF_REV]; /* Commit SHA1 ID */
123 unsigned int tag:1; /* Is it a tag? */
124 unsigned int remote:1; /* Is it a remote ref? */
125 unsigned int next:1; /* For ref lists: are there more refs? */
128 static struct ref **get_refs(char *id);
137 set_from_int_map(struct int_map *map, size_t map_size,
138 int *value, const char *name, int namelen)
143 for (i = 0; i < map_size; i++)
144 if (namelen == map[i].namelen &&
145 !strncasecmp(name, map[i].name, namelen)) {
146 *value = map[i].value;
159 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
161 if (srclen > dstlen - 1)
164 strncpy(dst, src, srclen);
168 /* Shorthands for safely copying into a fixed buffer. */
170 #define string_copy(dst, src) \
171 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
173 #define string_ncopy(dst, src, srclen) \
174 string_ncopy_do(dst, sizeof(dst), src, srclen)
176 #define string_copy_rev(dst, src) \
177 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
180 chomp_string(char *name)
184 while (isspace(*name))
187 namelen = strlen(name) - 1;
188 while (namelen > 0 && isspace(name[namelen]))
195 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
198 size_t pos = bufpos ? *bufpos : 0;
201 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
207 return pos >= bufsize ? FALSE : TRUE;
210 #define string_format(buf, fmt, args...) \
211 string_nformat(buf, sizeof(buf), NULL, fmt, args)
213 #define string_format_from(buf, from, fmt, args...) \
214 string_nformat(buf, sizeof(buf), from, fmt, args)
217 string_enum_compare(const char *str1, const char *str2, int len)
221 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
223 /* Diff-Header == DIFF_HEADER */
224 for (i = 0; i < len; i++) {
225 if (toupper(str1[i]) == toupper(str2[i]))
228 if (string_enum_sep(str1[i]) &&
229 string_enum_sep(str2[i]))
232 return str1[i] - str2[i];
240 * NOTE: The following is a slightly modified copy of the git project's shell
241 * quoting routines found in the quote.c file.
243 * Help to copy the thing properly quoted for the shell safety. any single
244 * quote is replaced with '\'', any exclamation point is replaced with '\!',
245 * and the whole thing is enclosed in a
248 * original sq_quote result
249 * name ==> name ==> 'name'
250 * a b ==> a b ==> 'a b'
251 * a'b ==> a'\''b ==> 'a'\''b'
252 * a!b ==> a'\!'b ==> 'a'\!'b'
256 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
260 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
263 while ((c = *src++)) {
264 if (c == '\'' || c == '!') {
275 if (bufsize < SIZEOF_STR)
287 /* XXX: Keep the view request first and in sync with views[]. */ \
288 REQ_GROUP("View switching") \
289 REQ_(VIEW_MAIN, "Show main view"), \
290 REQ_(VIEW_DIFF, "Show diff view"), \
291 REQ_(VIEW_LOG, "Show log view"), \
292 REQ_(VIEW_TREE, "Show tree view"), \
293 REQ_(VIEW_BLOB, "Show blob view"), \
294 REQ_(VIEW_HELP, "Show help page"), \
295 REQ_(VIEW_PAGER, "Show pager view"), \
297 REQ_GROUP("View manipulation") \
298 REQ_(ENTER, "Enter current line and scroll"), \
299 REQ_(NEXT, "Move to next"), \
300 REQ_(PREVIOUS, "Move to previous"), \
301 REQ_(VIEW_NEXT, "Move focus to next view"), \
302 REQ_(VIEW_CLOSE, "Close the current view"), \
303 REQ_(QUIT, "Close all views and quit"), \
305 REQ_GROUP("Cursor navigation") \
306 REQ_(MOVE_UP, "Move cursor one line up"), \
307 REQ_(MOVE_DOWN, "Move cursor one line down"), \
308 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
309 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
310 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
311 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
313 REQ_GROUP("Scrolling") \
314 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
315 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
316 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
317 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
319 REQ_GROUP("Searching") \
320 REQ_(SEARCH, "Search the view"), \
321 REQ_(SEARCH_BACK, "Search backwards in the view"), \
322 REQ_(FIND_NEXT, "Find next search match"), \
323 REQ_(FIND_PREV, "Find previous search match"), \
326 REQ_(NONE, "Do nothing"), \
327 REQ_(PROMPT, "Bring up the prompt"), \
328 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
329 REQ_(SCREEN_RESIZE, "Resize the screen"), \
330 REQ_(SHOW_VERSION, "Show version information"), \
331 REQ_(STOP_LOADING, "Stop all loading views"), \
332 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
333 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
336 /* User action requests. */
338 #define REQ_GROUP(help)
339 #define REQ_(req, help) REQ_##req
341 /* Offset all requests to avoid conflicts with ncurses getch values. */
342 REQ_OFFSET = KEY_MAX + 1,
350 struct request_info {
351 enum request request;
357 static struct request_info req_info[] = {
358 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
359 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
366 get_request(const char *name)
368 int namelen = strlen(name);
371 for (i = 0; i < ARRAY_SIZE(req_info); i++)
372 if (req_info[i].namelen == namelen &&
373 !string_enum_compare(req_info[i].name, name, namelen))
374 return req_info[i].request;
384 static const char usage[] =
385 VERSION " (" __DATE__ ")\n"
387 "Usage: tig [options]\n"
388 " or: tig [options] [--] [git log options]\n"
389 " or: tig [options] log [git log options]\n"
390 " or: tig [options] diff [git diff options]\n"
391 " or: tig [options] show [git show options]\n"
392 " or: tig [options] < [git command output]\n"
395 " -l Start up in log view\n"
396 " -d Start up in diff view\n"
397 " -n[I], --line-number[=I] Show line numbers with given interval\n"
398 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
399 " -- Mark end of tig options\n"
400 " -v, --version Show version and exit\n"
401 " -h, --help Show help message and exit\n";
403 /* Option and state variables. */
404 static bool opt_line_number = FALSE;
405 static bool opt_rev_graph = FALSE;
406 static int opt_num_interval = NUMBER_INTERVAL;
407 static int opt_tab_size = TABSIZE;
408 static enum request opt_request = REQ_VIEW_MAIN;
409 static char opt_cmd[SIZEOF_STR] = "";
410 static char opt_path[SIZEOF_STR] = "";
411 static FILE *opt_pipe = NULL;
412 static char opt_encoding[20] = "UTF-8";
413 static bool opt_utf8 = TRUE;
414 static char opt_codeset[20] = "UTF-8";
415 static iconv_t opt_iconv = ICONV_NONE;
416 static char opt_search[SIZEOF_STR] = "";
424 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
434 int namelen = strlen(name);
438 if (strncmp(opt, name, namelen))
441 if (opt[namelen] == '=')
442 value = opt + namelen + 1;
445 if (!short_name || opt[1] != short_name)
450 va_start(args, type);
451 if (type == OPT_INT) {
452 number = va_arg(args, int *);
454 *number = atoi(value);
461 /* Returns the index of log or diff command or -1 to exit. */
463 parse_options(int argc, char *argv[])
467 for (i = 1; i < argc; i++) {
470 if (!strcmp(opt, "log") ||
471 !strcmp(opt, "diff") ||
472 !strcmp(opt, "show")) {
473 opt_request = opt[0] == 'l'
474 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
478 if (opt[0] && opt[0] != '-')
481 if (!strcmp(opt, "-l")) {
482 opt_request = REQ_VIEW_LOG;
486 if (!strcmp(opt, "-d")) {
487 opt_request = REQ_VIEW_DIFF;
491 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
492 opt_line_number = TRUE;
496 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
497 opt_tab_size = MIN(opt_tab_size, TABSIZE);
501 if (check_option(opt, 'v', "version", OPT_NONE)) {
502 printf("tig version %s\n", VERSION);
506 if (check_option(opt, 'h', "help", OPT_NONE)) {
511 if (!strcmp(opt, "--")) {
516 die("unknown option '%s'\n\n%s", opt, usage);
519 if (!isatty(STDIN_FILENO)) {
520 opt_request = REQ_VIEW_PAGER;
523 } else if (i < argc) {
526 if (opt_request == REQ_VIEW_MAIN)
527 /* XXX: This is vulnerable to the user overriding
528 * options required for the main view parser. */
529 string_copy(opt_cmd, "git log --pretty=raw");
531 string_copy(opt_cmd, "git");
532 buf_size = strlen(opt_cmd);
534 while (buf_size < sizeof(opt_cmd) && i < argc) {
535 opt_cmd[buf_size++] = ' ';
536 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
539 if (buf_size >= sizeof(opt_cmd))
540 die("command too long");
542 opt_cmd[buf_size] = 0;
545 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
553 * Line-oriented content detection.
557 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
558 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
559 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
560 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
561 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
562 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
563 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
564 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
565 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
566 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
567 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
568 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
570 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
571 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
572 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
573 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
574 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
575 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
576 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
577 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
578 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
579 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
580 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
581 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
582 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
583 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
584 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
585 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
586 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
587 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
588 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
589 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
590 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
591 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
592 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
593 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
594 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
595 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
596 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
597 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
598 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
601 #define LINE(type, line, fg, bg, attr) \
608 const char *name; /* Option name. */
609 int namelen; /* Size of option name. */
610 const char *line; /* The start of line to match. */
611 int linelen; /* Size of string to match. */
612 int fg, bg, attr; /* Color and text attributes for the lines. */
615 static struct line_info line_info[] = {
616 #define LINE(type, line, fg, bg, attr) \
617 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
622 static enum line_type
623 get_line_type(char *line)
625 int linelen = strlen(line);
628 for (type = 0; type < ARRAY_SIZE(line_info); type++)
629 /* Case insensitive search matches Signed-off-by lines better. */
630 if (linelen >= line_info[type].linelen &&
631 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
638 get_line_attr(enum line_type type)
640 assert(type < ARRAY_SIZE(line_info));
641 return COLOR_PAIR(type) | line_info[type].attr;
644 static struct line_info *
645 get_line_info(char *name, int namelen)
649 for (type = 0; type < ARRAY_SIZE(line_info); type++)
650 if (namelen == line_info[type].namelen &&
651 !string_enum_compare(line_info[type].name, name, namelen))
652 return &line_info[type];
660 int default_bg = COLOR_BLACK;
661 int default_fg = COLOR_WHITE;
666 if (use_default_colors() != ERR) {
671 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
672 struct line_info *info = &line_info[type];
673 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
674 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
676 init_pair(type, fg, bg);
684 unsigned int selected:1;
686 void *data; /* User data */
696 enum request request;
697 struct keybinding *next;
700 static struct keybinding default_keybindings[] = {
702 { 'm', REQ_VIEW_MAIN },
703 { 'd', REQ_VIEW_DIFF },
704 { 'l', REQ_VIEW_LOG },
705 { 't', REQ_VIEW_TREE },
706 { 'f', REQ_VIEW_BLOB },
707 { 'p', REQ_VIEW_PAGER },
708 { 'h', REQ_VIEW_HELP },
710 /* View manipulation */
711 { 'q', REQ_VIEW_CLOSE },
712 { KEY_TAB, REQ_VIEW_NEXT },
713 { KEY_RETURN, REQ_ENTER },
714 { KEY_UP, REQ_PREVIOUS },
715 { KEY_DOWN, REQ_NEXT },
717 /* Cursor navigation */
718 { 'k', REQ_MOVE_UP },
719 { 'j', REQ_MOVE_DOWN },
720 { KEY_HOME, REQ_MOVE_FIRST_LINE },
721 { KEY_END, REQ_MOVE_LAST_LINE },
722 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
723 { ' ', REQ_MOVE_PAGE_DOWN },
724 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
725 { 'b', REQ_MOVE_PAGE_UP },
726 { '-', REQ_MOVE_PAGE_UP },
729 { KEY_IC, REQ_SCROLL_LINE_UP },
730 { KEY_DC, REQ_SCROLL_LINE_DOWN },
731 { 'w', REQ_SCROLL_PAGE_UP },
732 { 's', REQ_SCROLL_PAGE_DOWN },
736 { '?', REQ_SEARCH_BACK },
737 { 'n', REQ_FIND_NEXT },
738 { 'N', REQ_FIND_PREV },
742 { 'z', REQ_STOP_LOADING },
743 { 'v', REQ_SHOW_VERSION },
744 { 'r', REQ_SCREEN_REDRAW },
745 { '.', REQ_TOGGLE_LINENO },
746 { 'g', REQ_TOGGLE_REV_GRAPH },
749 /* Using the ncurses SIGWINCH handler. */
750 { KEY_RESIZE, REQ_SCREEN_RESIZE },
753 #define KEYMAP_INFO \
764 #define KEYMAP_(name) KEYMAP_##name
769 static struct int_map keymap_table[] = {
770 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
775 #define set_keymap(map, name) \
776 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
778 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
781 add_keybinding(enum keymap keymap, enum request request, int key)
783 struct keybinding *keybinding;
785 keybinding = calloc(1, sizeof(*keybinding));
787 die("Failed to allocate keybinding");
789 keybinding->alias = key;
790 keybinding->request = request;
791 keybinding->next = keybindings[keymap];
792 keybindings[keymap] = keybinding;
795 /* Looks for a key binding first in the given map, then in the generic map, and
796 * lastly in the default keybindings. */
798 get_keybinding(enum keymap keymap, int key)
800 struct keybinding *kbd;
803 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
804 if (kbd->alias == key)
807 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
808 if (kbd->alias == key)
811 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
812 if (default_keybindings[i].alias == key)
813 return default_keybindings[i].request;
815 return (enum request) key;
824 static struct key key_table[] = {
825 { "Enter", KEY_RETURN },
827 { "Backspace", KEY_BACKSPACE },
829 { "Escape", KEY_ESC },
830 { "Left", KEY_LEFT },
831 { "Right", KEY_RIGHT },
833 { "Down", KEY_DOWN },
834 { "Insert", KEY_IC },
835 { "Delete", KEY_DC },
837 { "Home", KEY_HOME },
839 { "PageUp", KEY_PPAGE },
840 { "PageDown", KEY_NPAGE },
850 { "F10", KEY_F(10) },
851 { "F11", KEY_F(11) },
852 { "F12", KEY_F(12) },
856 get_key_value(const char *name)
860 for (i = 0; i < ARRAY_SIZE(key_table); i++)
861 if (!strcasecmp(key_table[i].name, name))
862 return key_table[i].value;
864 if (strlen(name) == 1 && isprint(*name))
871 get_key(enum request request)
873 static char buf[BUFSIZ];
874 static char key_char[] = "'X'";
881 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
882 struct keybinding *keybinding = &default_keybindings[i];
886 if (keybinding->request != request)
889 for (key = 0; key < ARRAY_SIZE(key_table); key++)
890 if (key_table[key].value == keybinding->alias)
891 seq = key_table[key].name;
894 keybinding->alias < 127 &&
895 isprint(keybinding->alias)) {
896 key_char[1] = (char) keybinding->alias;
903 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
904 return "Too many keybindings!";
913 * User config file handling.
916 static struct int_map color_map[] = {
917 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
929 #define set_color(color, name) \
930 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
932 static struct int_map attr_map[] = {
933 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
943 #define set_attribute(attr, name) \
944 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
946 static int config_lineno;
947 static bool config_errors;
948 static char *config_msg;
950 /* Wants: object fgcolor bgcolor [attr] */
952 option_color_command(int argc, char *argv[])
954 struct line_info *info;
956 if (argc != 3 && argc != 4) {
957 config_msg = "Wrong number of arguments given to color command";
961 info = get_line_info(argv[0], strlen(argv[0]));
963 config_msg = "Unknown color name";
967 if (set_color(&info->fg, argv[1]) == ERR ||
968 set_color(&info->bg, argv[2]) == ERR) {
969 config_msg = "Unknown color";
973 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
974 config_msg = "Unknown attribute";
981 /* Wants: name = value */
983 option_set_command(int argc, char *argv[])
986 config_msg = "Wrong number of arguments given to set command";
990 if (strcmp(argv[1], "=")) {
991 config_msg = "No value assigned";
995 if (!strcmp(argv[0], "show-rev-graph")) {
996 opt_rev_graph = (!strcmp(argv[2], "1") ||
997 !strcmp(argv[2], "true") ||
998 !strcmp(argv[2], "yes"));
1002 if (!strcmp(argv[0], "line-number-interval")) {
1003 opt_num_interval = atoi(argv[2]);
1007 if (!strcmp(argv[0], "tab-size")) {
1008 opt_tab_size = atoi(argv[2]);
1012 if (!strcmp(argv[0], "commit-encoding")) {
1013 char *arg = argv[2];
1014 int delimiter = *arg;
1017 switch (delimiter) {
1020 for (arg++, i = 0; arg[i]; i++)
1021 if (arg[i] == delimiter) {
1026 string_copy(opt_encoding, arg);
1031 config_msg = "Unknown variable name";
1035 /* Wants: mode request key */
1037 option_bind_command(int argc, char *argv[])
1039 enum request request;
1044 config_msg = "Wrong number of arguments given to bind command";
1048 if (set_keymap(&keymap, argv[0]) == ERR) {
1049 config_msg = "Unknown key map";
1053 key = get_key_value(argv[1]);
1055 config_msg = "Unknown key";
1059 request = get_request(argv[2]);
1060 if (request == REQ_UNKNOWN) {
1061 config_msg = "Unknown request name";
1065 add_keybinding(keymap, request, key);
1071 set_option(char *opt, char *value)
1078 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1079 argv[argc++] = value;
1086 while (isspace(*value))
1090 if (!strcmp(opt, "color"))
1091 return option_color_command(argc, argv);
1093 if (!strcmp(opt, "set"))
1094 return option_set_command(argc, argv);
1096 if (!strcmp(opt, "bind"))
1097 return option_bind_command(argc, argv);
1099 config_msg = "Unknown option command";
1104 read_option(char *opt, int optlen, char *value, int valuelen)
1109 config_msg = "Internal error";
1111 /* Check for comment markers, since read_properties() will
1112 * only ensure opt and value are split at first " \t". */
1113 optlen = strcspn(opt, "#");
1117 if (opt[optlen] != 0) {
1118 config_msg = "No option value";
1122 /* Look for comment endings in the value. */
1123 int len = strcspn(value, "#");
1125 if (len < valuelen) {
1127 value[valuelen] = 0;
1130 status = set_option(opt, value);
1133 if (status == ERR) {
1134 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1135 config_lineno, optlen, opt, config_msg);
1136 config_errors = TRUE;
1139 /* Always keep going if errors are encountered. */
1146 char *home = getenv("HOME");
1147 char buf[SIZEOF_STR];
1151 config_errors = FALSE;
1153 if (!home || !string_format(buf, "%s/.tigrc", home))
1156 /* It's ok that the file doesn't exist. */
1157 file = fopen(buf, "r");
1161 if (read_properties(file, " \t", read_option) == ERR ||
1162 config_errors == TRUE)
1163 fprintf(stderr, "Errors while loading %s.\n", buf);
1176 /* The display array of active views and the index of the current view. */
1177 static struct view *display[2];
1178 static unsigned int current_view;
1180 /* Reading from the prompt? */
1181 static bool input_mode = FALSE;
1183 #define foreach_displayed_view(view, i) \
1184 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1186 #define displayed_views() (display[1] != NULL ? 2 : 1)
1188 /* Current head and commit ID */
1189 static char ref_blob[SIZEOF_REF] = "";
1190 static char ref_commit[SIZEOF_REF] = "HEAD";
1191 static char ref_head[SIZEOF_REF] = "HEAD";
1194 const char *name; /* View name */
1195 const char *cmd_fmt; /* Default command line format */
1196 const char *cmd_env; /* Command line set via environment */
1197 const char *id; /* Points to either of ref_{head,commit,blob} */
1199 struct view_ops *ops; /* View operations */
1201 enum keymap keymap; /* What keymap does this view have */
1203 char cmd[SIZEOF_STR]; /* Command buffer */
1204 char ref[SIZEOF_REF]; /* Hovered commit reference */
1205 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1207 int height, width; /* The width and height of the main window */
1208 WINDOW *win; /* The main window */
1209 WINDOW *title; /* The title window living below the main window */
1212 unsigned long offset; /* Offset of the window top */
1213 unsigned long lineno; /* Current line number */
1216 char grep[SIZEOF_STR]; /* Search string */
1217 regex_t *regex; /* Pre-compiled regex */
1219 /* If non-NULL, points to the view that opened this view. If this view
1220 * is closed tig will switch back to the parent view. */
1221 struct view *parent;
1224 unsigned long lines; /* Total number of lines */
1225 struct line *line; /* Line index */
1226 unsigned long line_size;/* Total number of allocated lines */
1227 unsigned int digits; /* Number of digits in the lines member. */
1235 /* What type of content being displayed. Used in the title bar. */
1237 /* Open and reads in all view content. */
1238 bool (*open)(struct view *view);
1239 /* Read one line; updates view->line. */
1240 bool (*read)(struct view *view, char *data);
1241 /* Draw one line; @lineno must be < view->height. */
1242 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1243 /* Depending on view, change display based on current line. */
1244 bool (*enter)(struct view *view, struct line *line);
1245 /* Search for regex in a line. */
1246 bool (*grep)(struct view *view, struct line *line);
1248 void (*select)(struct view *view, struct line *line);
1251 static struct view_ops pager_ops;
1252 static struct view_ops main_ops;
1253 static struct view_ops tree_ops;
1254 static struct view_ops blob_ops;
1255 static struct view_ops help_ops;
1257 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1258 { name, cmd, #env, ref, ops, map}
1260 #define VIEW_(id, name, ops, ref) \
1261 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1264 static struct view views[] = {
1265 VIEW_(MAIN, "main", &main_ops, ref_head),
1266 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1267 VIEW_(LOG, "log", &pager_ops, ref_head),
1268 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1269 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1270 VIEW_(HELP, "help", &help_ops, ""),
1271 VIEW_(PAGER, "pager", &pager_ops, ""),
1274 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1276 #define foreach_view(view, i) \
1277 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1279 #define view_is_displayed(view) \
1280 (view == display[0] || view == display[1])
1283 draw_view_line(struct view *view, unsigned int lineno)
1286 bool selected = (view->offset + lineno == view->lineno);
1289 assert(view_is_displayed(view));
1291 if (view->offset + lineno >= view->lines)
1294 line = &view->line[view->offset + lineno];
1297 line->selected = TRUE;
1298 view->ops->select(view, line);
1299 } else if (line->selected) {
1300 line->selected = FALSE;
1301 wmove(view->win, lineno, 0);
1302 wclrtoeol(view->win);
1305 scrollok(view->win, FALSE);
1306 draw_ok = view->ops->draw(view, line, lineno, selected);
1307 scrollok(view->win, TRUE);
1313 redraw_view_from(struct view *view, int lineno)
1315 assert(0 <= lineno && lineno < view->height);
1317 for (; lineno < view->height; lineno++) {
1318 if (!draw_view_line(view, lineno))
1322 redrawwin(view->win);
1324 wnoutrefresh(view->win);
1326 wrefresh(view->win);
1330 redraw_view(struct view *view)
1333 redraw_view_from(view, 0);
1338 update_view_title(struct view *view)
1340 char buf[SIZEOF_STR];
1341 char state[SIZEOF_STR];
1342 size_t bufpos = 0, statelen = 0;
1344 assert(view_is_displayed(view));
1346 if (view->lines || view->pipe) {
1347 unsigned int view_lines = view->offset + view->height;
1348 unsigned int lines = view->lines
1349 ? MIN(view_lines, view->lines) * 100 / view->lines
1352 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1359 time_t secs = time(NULL) - view->start_time;
1361 /* Three git seconds are a long time ... */
1363 string_format_from(state, &statelen, " %lds", secs);
1367 string_format_from(buf, &bufpos, "[%s]", view->name);
1368 if (*view->ref && bufpos < view->width) {
1369 size_t refsize = strlen(view->ref);
1370 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1372 if (minsize < view->width)
1373 refsize = view->width - minsize + 7;
1374 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1377 if (statelen && bufpos < view->width) {
1378 string_format_from(buf, &bufpos, " %s", state);
1381 if (view == display[current_view])
1382 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1384 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1386 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1387 wclrtoeol(view->title);
1388 wmove(view->title, 0, view->width - 1);
1391 wnoutrefresh(view->title);
1393 wrefresh(view->title);
1397 resize_display(void)
1400 struct view *base = display[0];
1401 struct view *view = display[1] ? display[1] : display[0];
1403 /* Setup window dimensions */
1405 getmaxyx(stdscr, base->height, base->width);
1407 /* Make room for the status window. */
1411 /* Horizontal split. */
1412 view->width = base->width;
1413 view->height = SCALE_SPLIT_VIEW(base->height);
1414 base->height -= view->height;
1416 /* Make room for the title bar. */
1420 /* Make room for the title bar. */
1425 foreach_displayed_view (view, i) {
1427 view->win = newwin(view->height, 0, offset, 0);
1429 die("Failed to create %s view", view->name);
1431 scrollok(view->win, TRUE);
1433 view->title = newwin(1, 0, offset + view->height, 0);
1435 die("Failed to create title window");
1438 wresize(view->win, view->height, view->width);
1439 mvwin(view->win, offset, 0);
1440 mvwin(view->title, offset + view->height, 0);
1443 offset += view->height + 1;
1448 redraw_display(void)
1453 foreach_displayed_view (view, i) {
1455 update_view_title(view);
1460 update_display_cursor(struct view *view)
1462 /* Move the cursor to the right-most column of the cursor line.
1464 * XXX: This could turn out to be a bit expensive, but it ensures that
1465 * the cursor does not jump around. */
1467 wmove(view->win, view->lineno - view->offset, view->width - 1);
1468 wrefresh(view->win);
1476 /* Scrolling backend */
1478 do_scroll_view(struct view *view, int lines)
1480 bool redraw_current_line = FALSE;
1482 /* The rendering expects the new offset. */
1483 view->offset += lines;
1485 assert(0 <= view->offset && view->offset < view->lines);
1488 /* Move current line into the view. */
1489 if (view->lineno < view->offset) {
1490 view->lineno = view->offset;
1491 redraw_current_line = TRUE;
1492 } else if (view->lineno >= view->offset + view->height) {
1493 view->lineno = view->offset + view->height - 1;
1494 redraw_current_line = TRUE;
1497 assert(view->offset <= view->lineno && view->lineno < view->lines);
1499 /* Redraw the whole screen if scrolling is pointless. */
1500 if (view->height < ABS(lines)) {
1504 int line = lines > 0 ? view->height - lines : 0;
1505 int end = line + ABS(lines);
1507 wscrl(view->win, lines);
1509 for (; line < end; line++) {
1510 if (!draw_view_line(view, line))
1514 if (redraw_current_line)
1515 draw_view_line(view, view->lineno - view->offset);
1518 redrawwin(view->win);
1519 wrefresh(view->win);
1523 /* Scroll frontend */
1525 scroll_view(struct view *view, enum request request)
1529 assert(view_is_displayed(view));
1532 case REQ_SCROLL_PAGE_DOWN:
1533 lines = view->height;
1534 case REQ_SCROLL_LINE_DOWN:
1535 if (view->offset + lines > view->lines)
1536 lines = view->lines - view->offset;
1538 if (lines == 0 || view->offset + view->height >= view->lines) {
1539 report("Cannot scroll beyond the last line");
1544 case REQ_SCROLL_PAGE_UP:
1545 lines = view->height;
1546 case REQ_SCROLL_LINE_UP:
1547 if (lines > view->offset)
1548 lines = view->offset;
1551 report("Cannot scroll beyond the first line");
1559 die("request %d not handled in switch", request);
1562 do_scroll_view(view, lines);
1567 move_view(struct view *view, enum request request)
1569 int scroll_steps = 0;
1573 case REQ_MOVE_FIRST_LINE:
1574 steps = -view->lineno;
1577 case REQ_MOVE_LAST_LINE:
1578 steps = view->lines - view->lineno - 1;
1581 case REQ_MOVE_PAGE_UP:
1582 steps = view->height > view->lineno
1583 ? -view->lineno : -view->height;
1586 case REQ_MOVE_PAGE_DOWN:
1587 steps = view->lineno + view->height >= view->lines
1588 ? view->lines - view->lineno - 1 : view->height;
1600 die("request %d not handled in switch", request);
1603 if (steps <= 0 && view->lineno == 0) {
1604 report("Cannot move beyond the first line");
1607 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1608 report("Cannot move beyond the last line");
1612 /* Move the current line */
1613 view->lineno += steps;
1614 assert(0 <= view->lineno && view->lineno < view->lines);
1616 /* Check whether the view needs to be scrolled */
1617 if (view->lineno < view->offset ||
1618 view->lineno >= view->offset + view->height) {
1619 scroll_steps = steps;
1620 if (steps < 0 && -steps > view->offset) {
1621 scroll_steps = -view->offset;
1623 } else if (steps > 0) {
1624 if (view->lineno == view->lines - 1 &&
1625 view->lines > view->height) {
1626 scroll_steps = view->lines - view->offset - 1;
1627 if (scroll_steps >= view->height)
1628 scroll_steps -= view->height - 1;
1633 if (!view_is_displayed(view)) {
1634 view->offset += scroll_steps;
1635 assert(0 <= view->offset && view->offset < view->lines);
1636 view->ops->select(view, &view->line[view->lineno]);
1640 /* Repaint the old "current" line if we be scrolling */
1641 if (ABS(steps) < view->height)
1642 draw_view_line(view, view->lineno - steps - view->offset);
1645 do_scroll_view(view, scroll_steps);
1649 /* Draw the current line */
1650 draw_view_line(view, view->lineno - view->offset);
1652 redrawwin(view->win);
1653 wrefresh(view->win);
1662 static void search_view(struct view *view, enum request request);
1665 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1667 assert(view_is_displayed(view));
1669 if (!view->ops->grep(view, line))
1672 if (lineno - view->offset >= view->height) {
1673 view->offset = lineno;
1674 view->lineno = lineno;
1678 unsigned long old_lineno = view->lineno - view->offset;
1680 view->lineno = lineno;
1681 draw_view_line(view, old_lineno);
1683 draw_view_line(view, view->lineno - view->offset);
1684 redrawwin(view->win);
1685 wrefresh(view->win);
1688 report("Line %ld matches '%s'", lineno + 1, view->grep);
1693 find_next(struct view *view, enum request request)
1695 unsigned long lineno = view->lineno;
1700 report("No previous search");
1702 search_view(view, request);
1712 case REQ_SEARCH_BACK:
1721 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1722 lineno += direction;
1724 /* Note, lineno is unsigned long so will wrap around in which case it
1725 * will become bigger than view->lines. */
1726 for (; lineno < view->lines; lineno += direction) {
1727 struct line *line = &view->line[lineno];
1729 if (find_next_line(view, lineno, line))
1733 report("No match found for '%s'", view->grep);
1737 search_view(struct view *view, enum request request)
1742 regfree(view->regex);
1745 view->regex = calloc(1, sizeof(*view->regex));
1750 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1751 if (regex_err != 0) {
1752 char buf[SIZEOF_STR] = "unknown error";
1754 regerror(regex_err, view->regex, buf, sizeof(buf));
1755 report("Search failed: %s", buf);
1759 string_copy(view->grep, opt_search);
1761 find_next(view, request);
1765 * Incremental updating
1769 end_update(struct view *view)
1773 set_nonblocking_input(FALSE);
1774 if (view->pipe == stdin)
1782 begin_update(struct view *view)
1784 const char *id = view->id;
1790 string_copy(view->cmd, opt_cmd);
1792 /* When running random commands, initially show the
1793 * command in the title. However, it maybe later be
1794 * overwritten if a commit line is selected. */
1795 string_copy(view->ref, view->cmd);
1797 } else if (view == VIEW(REQ_VIEW_TREE)) {
1798 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1799 char path[SIZEOF_STR];
1801 if (strcmp(view->vid, view->id))
1802 opt_path[0] = path[0] = 0;
1803 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
1806 if (!string_format(view->cmd, format, id, path))
1810 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1812 if (!string_format(view->cmd, format, id, id, id, id, id))
1815 /* Put the current ref_* value to the view title ref
1816 * member. This is needed by the blob view. Most other
1817 * views sets it automatically after loading because the
1818 * first line is a commit line. */
1819 string_copy(view->ref, id);
1822 /* Special case for the pager view. */
1824 view->pipe = opt_pipe;
1827 view->pipe = popen(view->cmd, "r");
1833 set_nonblocking_input(TRUE);
1838 string_copy_rev(view->vid, id);
1843 for (i = 0; i < view->lines; i++)
1844 if (view->line[i].data)
1845 free(view->line[i].data);
1851 view->start_time = time(NULL);
1856 static struct line *
1857 realloc_lines(struct view *view, size_t line_size)
1859 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1865 view->line_size = line_size;
1870 update_view(struct view *view)
1872 char in_buffer[BUFSIZ];
1873 char out_buffer[BUFSIZ * 2];
1875 /* The number of lines to read. If too low it will cause too much
1876 * redrawing (and possible flickering), if too high responsiveness
1878 unsigned long lines = view->height;
1879 int redraw_from = -1;
1884 /* Only redraw if lines are visible. */
1885 if (view->offset + view->height >= view->lines)
1886 redraw_from = view->lines - view->offset;
1888 /* FIXME: This is probably not perfect for backgrounded views. */
1889 if (!realloc_lines(view, view->lines + lines))
1892 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1893 size_t linelen = strlen(line);
1896 line[linelen - 1] = 0;
1898 if (opt_iconv != ICONV_NONE) {
1900 size_t inlen = linelen;
1902 char *outbuf = out_buffer;
1903 size_t outlen = sizeof(out_buffer);
1907 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1908 if (ret != (size_t) -1) {
1910 linelen = strlen(out_buffer);
1914 if (!view->ops->read(view, line))
1924 lines = view->lines;
1925 for (digits = 0; lines; digits++)
1928 /* Keep the displayed view in sync with line number scaling. */
1929 if (digits != view->digits) {
1930 view->digits = digits;
1935 if (!view_is_displayed(view))
1938 if (view == VIEW(REQ_VIEW_TREE)) {
1939 /* Clear the view and redraw everything since the tree sorting
1940 * might have rearranged things. */
1943 } else if (redraw_from >= 0) {
1944 /* If this is an incremental update, redraw the previous line
1945 * since for commits some members could have changed when
1946 * loading the main view. */
1947 if (redraw_from > 0)
1950 /* Since revision graph visualization requires knowledge
1951 * about the parent commit, it causes a further one-off
1952 * needed to be redrawn for incremental updates. */
1953 if (redraw_from > 0 && opt_rev_graph)
1956 /* Incrementally draw avoids flickering. */
1957 redraw_view_from(view, redraw_from);
1960 /* Update the title _after_ the redraw so that if the redraw picks up a
1961 * commit reference in view->ref it'll be available here. */
1962 update_view_title(view);
1965 if (ferror(view->pipe)) {
1966 report("Failed to read: %s", strerror(errno));
1969 } else if (feof(view->pipe)) {
1977 report("Allocation failure");
1980 view->ops->read(view, NULL);
1985 static struct line *
1986 add_line_data(struct view *view, void *data, enum line_type type)
1988 struct line *line = &view->line[view->lines++];
1990 memset(line, 0, sizeof(*line));
1997 static struct line *
1998 add_line_text(struct view *view, char *data, enum line_type type)
2001 data = strdup(data);
2003 return data ? add_line_data(view, data, type) : NULL;
2012 OPEN_DEFAULT = 0, /* Use default view switching. */
2013 OPEN_SPLIT = 1, /* Split current view. */
2014 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2015 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2019 open_view(struct view *prev, enum request request, enum open_flags flags)
2021 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2022 bool split = !!(flags & OPEN_SPLIT);
2023 bool reload = !!(flags & OPEN_RELOAD);
2024 struct view *view = VIEW(request);
2025 int nviews = displayed_views();
2026 struct view *base_view = display[0];
2028 if (view == prev && nviews == 1 && !reload) {
2029 report("Already in %s view", view->name);
2033 if (view->ops->open) {
2034 if (!view->ops->open(view)) {
2035 report("Failed to load %s view", view->name);
2039 } else if ((reload || strcmp(view->vid, view->id)) &&
2040 !begin_update(view)) {
2041 report("Failed to load %s view", view->name);
2050 /* Maximize the current view. */
2051 memset(display, 0, sizeof(display));
2053 display[current_view] = view;
2056 /* Resize the view when switching between split- and full-screen,
2057 * or when switching between two different full-screen views. */
2058 if (nviews != displayed_views() ||
2059 (nviews == 1 && base_view != display[0]))
2062 if (split && prev->lineno - prev->offset >= prev->height) {
2063 /* Take the title line into account. */
2064 int lines = prev->lineno - prev->offset - prev->height + 1;
2066 /* Scroll the view that was split if the current line is
2067 * outside the new limited view. */
2068 do_scroll_view(prev, lines);
2071 if (prev && view != prev) {
2072 if (split && !backgrounded) {
2073 /* "Blur" the previous view. */
2074 update_view_title(prev);
2077 view->parent = prev;
2080 if (view->pipe && view->lines == 0) {
2081 /* Clear the old view and let the incremental updating refill
2090 /* If the view is backgrounded the above calls to report()
2091 * won't redraw the view title. */
2093 update_view_title(view);
2098 * User request switch noodle
2102 view_driver(struct view *view, enum request request)
2109 case REQ_MOVE_PAGE_UP:
2110 case REQ_MOVE_PAGE_DOWN:
2111 case REQ_MOVE_FIRST_LINE:
2112 case REQ_MOVE_LAST_LINE:
2113 move_view(view, request);
2116 case REQ_SCROLL_LINE_DOWN:
2117 case REQ_SCROLL_LINE_UP:
2118 case REQ_SCROLL_PAGE_DOWN:
2119 case REQ_SCROLL_PAGE_UP:
2120 scroll_view(view, request);
2125 report("No file chosen, press %s to open tree view",
2126 get_key(REQ_VIEW_TREE));
2129 open_view(view, request, OPEN_DEFAULT);
2132 case REQ_VIEW_PAGER:
2133 if (!VIEW(REQ_VIEW_PAGER)->lines) {
2134 report("No pager content, press %s to run command from prompt",
2135 get_key(REQ_PROMPT));
2138 open_view(view, request, OPEN_DEFAULT);
2146 open_view(view, request, OPEN_DEFAULT);
2151 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2153 if ((view == VIEW(REQ_VIEW_DIFF) &&
2154 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2155 (view == VIEW(REQ_VIEW_BLOB) &&
2156 view->parent == VIEW(REQ_VIEW_TREE))) {
2157 view = view->parent;
2158 move_view(view, request);
2159 if (view_is_displayed(view))
2160 update_view_title(view);
2162 move_view(view, request);
2169 report("Nothing to enter");
2172 return view->ops->enter(view, &view->line[view->lineno]);
2176 int nviews = displayed_views();
2177 int next_view = (current_view + 1) % nviews;
2179 if (next_view == current_view) {
2180 report("Only one view is displayed");
2184 current_view = next_view;
2185 /* Blur out the title of the previous view. */
2186 update_view_title(view);
2190 case REQ_TOGGLE_LINENO:
2191 opt_line_number = !opt_line_number;
2195 case REQ_TOGGLE_REV_GRAPH:
2196 opt_rev_graph = !opt_rev_graph;
2201 /* Always reload^Wrerun commands from the prompt. */
2202 open_view(view, opt_request, OPEN_RELOAD);
2206 case REQ_SEARCH_BACK:
2207 search_view(view, request);
2212 find_next(view, request);
2215 case REQ_STOP_LOADING:
2216 for (i = 0; i < ARRAY_SIZE(views); i++) {
2219 report("Stopped loading the %s view", view->name),
2224 case REQ_SHOW_VERSION:
2225 report("%s (built %s)", VERSION, __DATE__);
2228 case REQ_SCREEN_RESIZE:
2231 case REQ_SCREEN_REDRAW:
2239 case REQ_VIEW_CLOSE:
2240 /* XXX: Mark closed views by letting view->parent point to the
2241 * view itself. Parents to closed view should never be
2244 view->parent->parent != view->parent) {
2245 memset(display, 0, sizeof(display));
2247 display[current_view] = view->parent;
2248 view->parent = view;
2258 /* An unknown key will show most commonly used commands. */
2259 report("Unknown key, press 'h' for help");
2272 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2274 char *text = line->data;
2275 enum line_type type = line->type;
2276 int textlen = strlen(text);
2279 wmove(view->win, lineno, 0);
2283 wchgat(view->win, -1, 0, type, NULL);
2286 attr = get_line_attr(type);
2287 wattrset(view->win, attr);
2289 if (opt_line_number || opt_tab_size < TABSIZE) {
2290 static char spaces[] = " ";
2291 int col_offset = 0, col = 0;
2293 if (opt_line_number) {
2294 unsigned long real_lineno = view->offset + lineno + 1;
2296 if (real_lineno == 1 ||
2297 (real_lineno % opt_num_interval) == 0) {
2298 wprintw(view->win, "%.*d", view->digits, real_lineno);
2301 waddnstr(view->win, spaces,
2302 MIN(view->digits, STRING_SIZE(spaces)));
2304 waddstr(view->win, ": ");
2305 col_offset = view->digits + 2;
2308 while (text && col_offset + col < view->width) {
2309 int cols_max = view->width - col_offset - col;
2313 if (*text == '\t') {
2315 assert(sizeof(spaces) > TABSIZE);
2317 cols = opt_tab_size - (col % opt_tab_size);
2320 text = strchr(text, '\t');
2321 cols = line ? text - pos : strlen(pos);
2324 waddnstr(view->win, pos, MIN(cols, cols_max));
2329 int col = 0, pos = 0;
2331 for (; pos < textlen && col < view->width; pos++, col++)
2332 if (text[pos] == '\t')
2333 col += TABSIZE - (col % TABSIZE) - 1;
2335 waddnstr(view->win, text, pos);
2342 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2344 char refbuf[SIZEOF_STR];
2348 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2351 pipe = popen(refbuf, "r");
2355 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2356 ref = chomp_string(ref);
2362 /* This is the only fatal call, since it can "corrupt" the buffer. */
2363 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2370 add_pager_refs(struct view *view, struct line *line)
2372 char buf[SIZEOF_STR];
2373 char *commit_id = line->data + STRING_SIZE("commit ");
2375 size_t bufpos = 0, refpos = 0;
2376 const char *sep = "Refs: ";
2377 bool is_tag = FALSE;
2379 assert(line->type == LINE_COMMIT);
2381 refs = get_refs(commit_id);
2383 if (view == VIEW(REQ_VIEW_DIFF))
2384 goto try_add_describe_ref;
2389 struct ref *ref = refs[refpos];
2390 char *fmt = ref->tag ? "%s[%s]" :
2391 ref->remote ? "%s<%s>" : "%s%s";
2393 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2398 } while (refs[refpos++]->next);
2400 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2401 try_add_describe_ref:
2402 /* Add <tag>-g<commit_id> "fake" reference. */
2403 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2410 if (!realloc_lines(view, view->line_size + 1))
2413 add_line_text(view, buf, LINE_PP_REFS);
2417 pager_read(struct view *view, char *data)
2424 line = add_line_text(view, data, get_line_type(data));
2428 if (line->type == LINE_COMMIT &&
2429 (view == VIEW(REQ_VIEW_DIFF) ||
2430 view == VIEW(REQ_VIEW_LOG)))
2431 add_pager_refs(view, line);
2437 pager_enter(struct view *view, struct line *line)
2441 if (line->type == LINE_COMMIT &&
2442 (view == VIEW(REQ_VIEW_LOG) ||
2443 view == VIEW(REQ_VIEW_PAGER))) {
2444 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2448 /* Always scroll the view even if it was split. That way
2449 * you can use Enter to scroll through the log view and
2450 * split open each commit diff. */
2451 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2453 /* FIXME: A minor workaround. Scrolling the view will call report("")
2454 * but if we are scrolling a non-current view this won't properly
2455 * update the view title. */
2457 update_view_title(view);
2463 pager_grep(struct view *view, struct line *line)
2466 char *text = line->data;
2471 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2478 pager_select(struct view *view, struct line *line)
2480 if (line->type == LINE_COMMIT) {
2481 char *text = line->data + STRING_SIZE("commit ");
2483 if (view != VIEW(REQ_VIEW_PAGER))
2484 string_copy_rev(view->ref, text);
2485 string_copy_rev(ref_commit, text);
2489 static struct view_ops pager_ops = {
2505 help_open(struct view *view)
2508 int lines = ARRAY_SIZE(req_info) + 2;
2511 if (view->lines > 0)
2514 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2515 if (!req_info[i].request)
2518 view->line = calloc(lines, sizeof(*view->line));
2522 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2524 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2527 if (!req_info[i].request) {
2528 add_line_text(view, "", LINE_DEFAULT);
2529 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2533 key = get_key(req_info[i].request);
2534 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
2537 add_line_text(view, buf, LINE_DEFAULT);
2543 static struct view_ops help_ops = {
2558 /* Parse output from git-ls-tree(1):
2560 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2561 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2562 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2563 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2566 #define SIZEOF_TREE_ATTR \
2567 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2569 #define TREE_UP_FORMAT "040000 tree %s\t.."
2572 tree_compare_entry(enum line_type type1, char *name1,
2573 enum line_type type2, char *name2)
2575 if (type1 != type2) {
2576 if (type1 == LINE_TREE_DIR)
2581 return strcmp(name1, name2);
2585 tree_read(struct view *view, char *text)
2587 size_t textlen = text ? strlen(text) : 0;
2588 char buf[SIZEOF_STR];
2590 enum line_type type;
2591 bool first_read = view->lines == 0;
2593 if (textlen <= SIZEOF_TREE_ATTR)
2596 type = text[STRING_SIZE("100644 ")] == 't'
2597 ? LINE_TREE_DIR : LINE_TREE_FILE;
2600 /* Add path info line */
2601 if (!string_format(buf, "Directory path /%s", opt_path) ||
2602 !realloc_lines(view, view->line_size + 1) ||
2603 !add_line_text(view, buf, LINE_DEFAULT))
2606 /* Insert "link" to parent directory. */
2608 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2609 !realloc_lines(view, view->line_size + 1) ||
2610 !add_line_text(view, buf, LINE_TREE_DIR))
2615 /* Strip the path part ... */
2617 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2618 size_t striplen = strlen(opt_path);
2619 char *path = text + SIZEOF_TREE_ATTR;
2621 if (pathlen > striplen)
2622 memmove(path, path + striplen,
2623 pathlen - striplen + 1);
2626 /* Skip "Directory ..." and ".." line. */
2627 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2628 struct line *line = &view->line[pos];
2629 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2630 char *path2 = text + SIZEOF_TREE_ATTR;
2631 int cmp = tree_compare_entry(line->type, path1, type, path2);
2636 text = strdup(text);
2640 if (view->lines > pos)
2641 memmove(&view->line[pos + 1], &view->line[pos],
2642 (view->lines - pos) * sizeof(*line));
2644 line = &view->line[pos];
2651 if (!add_line_text(view, text, type))
2654 /* Move the current line to the first tree entry. */
2662 tree_enter(struct view *view, struct line *line)
2664 enum open_flags flags;
2665 enum request request;
2667 switch (line->type) {
2669 /* Depending on whether it is a subdir or parent (updir?) link
2670 * mangle the path buffer. */
2671 if (line == &view->line[1] && *opt_path) {
2672 size_t path_len = strlen(opt_path);
2673 char *dirsep = opt_path + path_len - 1;
2675 while (dirsep > opt_path && dirsep[-1] != '/')
2681 size_t pathlen = strlen(opt_path);
2682 size_t origlen = pathlen;
2683 char *data = line->data;
2684 char *basename = data + SIZEOF_TREE_ATTR;
2686 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2687 opt_path[origlen] = 0;
2692 /* Trees and subtrees share the same ID, so they are not not
2693 * unique like blobs. */
2694 flags = OPEN_RELOAD;
2695 request = REQ_VIEW_TREE;
2698 case LINE_TREE_FILE:
2699 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2700 request = REQ_VIEW_BLOB;
2707 open_view(view, request, flags);
2713 tree_select(struct view *view, struct line *line)
2715 char *text = line->data + STRING_SIZE("100644 blob ");
2717 if (line->type == LINE_TREE_FILE) {
2718 string_copy_rev(ref_blob, text);
2720 } else if (line->type != LINE_TREE_DIR) {
2724 string_copy_rev(view->ref, text);
2727 static struct view_ops tree_ops = {
2738 blob_read(struct view *view, char *line)
2740 return add_line_text(view, line, LINE_DEFAULT);
2743 static struct view_ops blob_ops = {
2759 char id[SIZEOF_REV]; /* SHA1 ID. */
2760 char title[128]; /* First line of the commit message. */
2761 char author[75]; /* Author of the commit. */
2762 struct tm time; /* Date from the author ident. */
2763 struct ref **refs; /* Repository references. */
2764 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2765 size_t graph_size; /* The width of the graph array. */
2768 /* Size of rev graph with no "padding" columns */
2769 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2772 struct rev_graph *prev, *next, *parents;
2773 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2775 struct commit *commit;
2779 /* Parents of the commit being visualized. */
2780 static struct rev_graph graph_parents[4];
2782 /* The current stack of revisions on the graph. */
2783 static struct rev_graph graph_stacks[4] = {
2784 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
2785 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2786 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
2787 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
2791 graph_parent_is_merge(struct rev_graph *graph)
2793 return graph->parents->size > 1;
2797 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
2799 struct commit *commit = graph->commit;
2801 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
2802 commit->graph[commit->graph_size++] = symbol;
2806 done_rev_graph(struct rev_graph *graph)
2808 if (graph_parent_is_merge(graph) &&
2809 graph->pos < graph->size - 1 &&
2810 graph->next->size == graph->size + graph->parents->size - 1) {
2811 size_t i = graph->pos + graph->parents->size - 1;
2813 graph->commit->graph_size = i * 2;
2814 while (i < graph->next->size - 1) {
2815 append_to_rev_graph(graph, ' ');
2816 append_to_rev_graph(graph, '\\');
2821 graph->size = graph->pos = 0;
2822 graph->commit = NULL;
2823 memset(graph->parents, 0, sizeof(*graph->parents));
2827 push_rev_graph(struct rev_graph *graph, char *parent)
2831 /* "Collapse" duplicate parents lines.
2833 * FIXME: This needs to also update update the drawn graph but
2834 * for now it just serves as a method for pruning graph lines. */
2835 for (i = 0; i < graph->size; i++)
2836 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
2839 if (graph->size < SIZEOF_REVITEMS) {
2840 string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV);
2845 get_rev_graph_symbol(struct rev_graph *graph)
2849 if (graph->parents->size == 0)
2850 symbol = REVGRAPH_INIT;
2851 else if (graph_parent_is_merge(graph))
2852 symbol = REVGRAPH_MERGE;
2853 else if (graph->pos >= graph->size)
2854 symbol = REVGRAPH_BRANCH;
2856 symbol = REVGRAPH_COMMIT;
2862 draw_rev_graph(struct rev_graph *graph)
2865 chtype separator, line;
2867 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
2868 static struct rev_filler fillers[] = {
2869 { ' ', REVGRAPH_LINE },
2874 chtype symbol = get_rev_graph_symbol(graph);
2875 struct rev_filler *filler;
2878 filler = &fillers[DEFAULT];
2880 for (i = 0; i < graph->pos; i++) {
2881 append_to_rev_graph(graph, filler->line);
2882 if (graph_parent_is_merge(graph->prev) &&
2883 graph->prev->pos == i)
2884 filler = &fillers[RSHARP];
2886 append_to_rev_graph(graph, filler->separator);
2889 /* Place the symbol for this revision. */
2890 append_to_rev_graph(graph, symbol);
2892 if (graph->prev->size > graph->size)
2893 filler = &fillers[RDIAG];
2895 filler = &fillers[DEFAULT];
2899 for (; i < graph->size; i++) {
2900 append_to_rev_graph(graph, filler->separator);
2901 append_to_rev_graph(graph, filler->line);
2902 if (graph_parent_is_merge(graph->prev) &&
2903 i < graph->prev->pos + graph->parents->size)
2904 filler = &fillers[RSHARP];
2905 if (graph->prev->size > graph->size)
2906 filler = &fillers[LDIAG];
2909 if (graph->prev->size > graph->size) {
2910 append_to_rev_graph(graph, filler->separator);
2911 if (filler->line != ' ')
2912 append_to_rev_graph(graph, filler->line);
2916 /* Prepare the next rev graph */
2918 prepare_rev_graph(struct rev_graph *graph)
2922 /* First, traverse all lines of revisions up to the active one. */
2923 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2924 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2927 push_rev_graph(graph->next, graph->rev[graph->pos]);
2930 /* Interleave the new revision parent(s). */
2931 for (i = 0; i < graph->parents->size; i++)
2932 push_rev_graph(graph->next, graph->parents->rev[i]);
2934 /* Lastly, put any remaining revisions. */
2935 for (i = graph->pos + 1; i < graph->size; i++)
2936 push_rev_graph(graph->next, graph->rev[i]);
2940 update_rev_graph(struct rev_graph *graph)
2942 /* If this is the finalizing update ... */
2944 prepare_rev_graph(graph);
2946 /* Graph visualization needs a one rev look-ahead,
2947 * so the first update doesn't visualize anything. */
2948 if (!graph->prev->commit)
2951 draw_rev_graph(graph->prev);
2952 done_rev_graph(graph->prev->prev);
2961 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2963 char buf[DATE_COLS + 1];
2964 struct commit *commit = line->data;
2965 enum line_type type;
2971 if (!*commit->author)
2974 wmove(view->win, lineno, col);
2978 wattrset(view->win, get_line_attr(type));
2979 wchgat(view->win, -1, 0, type, NULL);
2982 type = LINE_MAIN_COMMIT;
2983 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2986 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2987 waddnstr(view->win, buf, timelen);
2988 waddstr(view->win, " ");
2991 wmove(view->win, lineno, col);
2992 if (type != LINE_CURSOR)
2993 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2996 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2998 authorlen = strlen(commit->author);
2999 if (authorlen > AUTHOR_COLS - 2) {
3000 authorlen = AUTHOR_COLS - 2;
3006 waddnstr(view->win, commit->author, authorlen);
3007 if (type != LINE_CURSOR)
3008 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
3009 waddch(view->win, '~');
3011 waddstr(view->win, commit->author);
3015 if (type != LINE_CURSOR)
3016 wattrset(view->win, A_NORMAL);
3018 if (opt_rev_graph && commit->graph_size) {
3021 wmove(view->win, lineno, col);
3022 /* Using waddch() instead of waddnstr() ensures that
3023 * they'll be rendered correctly for the cursor line. */
3024 for (i = 0; i < commit->graph_size; i++)
3025 waddch(view->win, commit->graph[i]);
3027 waddch(view->win, ' ');
3028 col += commit->graph_size + 1;
3031 wmove(view->win, lineno, col);
3037 if (type == LINE_CURSOR)
3039 else if (commit->refs[i]->tag)
3040 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
3041 else if (commit->refs[i]->remote)
3042 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
3044 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3045 waddstr(view->win, "[");
3046 waddstr(view->win, commit->refs[i]->name);
3047 waddstr(view->win, "]");
3048 if (type != LINE_CURSOR)
3049 wattrset(view->win, A_NORMAL);
3050 waddstr(view->win, " ");
3051 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3052 } while (commit->refs[i++]->next);
3055 if (type != LINE_CURSOR)
3056 wattrset(view->win, get_line_attr(type));
3059 int titlelen = strlen(commit->title);
3061 if (col + titlelen > view->width)
3062 titlelen = view->width - col;
3064 waddnstr(view->win, commit->title, titlelen);
3070 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3072 main_read(struct view *view, char *line)
3074 static struct rev_graph *graph = graph_stacks;
3075 enum line_type type;
3076 struct commit *commit;
3079 update_rev_graph(graph);
3083 type = get_line_type(line);
3084 if (type == LINE_COMMIT) {
3085 commit = calloc(1, sizeof(struct commit));
3089 string_copy_rev(commit->id, line + STRING_SIZE("commit "));
3090 commit->refs = get_refs(commit->id);
3091 graph->commit = commit;
3092 add_line_data(view, commit, LINE_MAIN_COMMIT);
3098 commit = view->line[view->lines - 1].data;
3102 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
3107 /* Parse author lines where the name may be empty:
3108 * author <email@address.tld> 1138474660 +0100
3110 char *ident = line + STRING_SIZE("author ");
3111 char *nameend = strchr(ident, '<');
3112 char *emailend = strchr(ident, '>');
3114 if (!nameend || !emailend)
3117 update_rev_graph(graph);
3118 graph = graph->next;
3120 *nameend = *emailend = 0;
3121 ident = chomp_string(ident);
3123 ident = chomp_string(nameend + 1);
3128 string_copy(commit->author, ident);
3130 /* Parse epoch and timezone */
3131 if (emailend[1] == ' ') {
3132 char *secs = emailend + 2;
3133 char *zone = strchr(secs, ' ');
3134 time_t time = (time_t) atol(secs);
3136 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3140 tz = ('0' - zone[1]) * 60 * 60 * 10;
3141 tz += ('0' - zone[2]) * 60 * 60;
3142 tz += ('0' - zone[3]) * 60;
3143 tz += ('0' - zone[4]) * 60;
3151 gmtime_r(&time, &commit->time);
3156 /* Fill in the commit title if it has not already been set. */
3157 if (commit->title[0])
3160 /* Require titles to start with a non-space character at the
3161 * offset used by git log. */
3162 if (strncmp(line, " ", 4))
3165 /* Well, if the title starts with a whitespace character,
3166 * try to be forgiving. Otherwise we end up with no title. */
3167 while (isspace(*line))
3171 /* FIXME: More graceful handling of titles; append "..." to
3172 * shortened titles, etc. */
3174 string_copy(commit->title, line);
3181 main_enter(struct view *view, struct line *line)
3183 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3185 open_view(view, REQ_VIEW_DIFF, flags);
3190 main_grep(struct view *view, struct line *line)
3192 struct commit *commit = line->data;
3193 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3194 char buf[DATE_COLS + 1];
3197 for (state = S_TITLE; state < S_END; state++) {
3201 case S_TITLE: text = commit->title; break;
3202 case S_AUTHOR: text = commit->author; break;
3204 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3213 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3221 main_select(struct view *view, struct line *line)
3223 struct commit *commit = line->data;
3225 string_copy_rev(view->ref, commit->id);
3226 string_copy_rev(ref_commit, view->ref);
3229 static struct view_ops main_ops = {
3241 * Unicode / UTF-8 handling
3243 * NOTE: Much of the following code for dealing with unicode is derived from
3244 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3245 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3248 /* I've (over)annotated a lot of code snippets because I am not entirely
3249 * confident that the approach taken by this small UTF-8 interface is correct.
3253 unicode_width(unsigned long c)
3256 (c <= 0x115f /* Hangul Jamo */
3259 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3261 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3262 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3263 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3264 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3265 || (c >= 0xffe0 && c <= 0xffe6)
3266 || (c >= 0x20000 && c <= 0x2fffd)
3267 || (c >= 0x30000 && c <= 0x3fffd)))
3273 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3274 * Illegal bytes are set one. */
3275 static const unsigned char utf8_bytes[256] = {
3276 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,
3277 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,
3278 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,
3279 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,
3280 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,
3281 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,
3282 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,
3283 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,
3286 /* Decode UTF-8 multi-byte representation into a unicode character. */
3287 static inline unsigned long
3288 utf8_to_unicode(const char *string, size_t length)
3290 unsigned long unicode;
3294 unicode = string[0];
3297 unicode = (string[0] & 0x1f) << 6;
3298 unicode += (string[1] & 0x3f);
3301 unicode = (string[0] & 0x0f) << 12;
3302 unicode += ((string[1] & 0x3f) << 6);
3303 unicode += (string[2] & 0x3f);
3306 unicode = (string[0] & 0x0f) << 18;
3307 unicode += ((string[1] & 0x3f) << 12);
3308 unicode += ((string[2] & 0x3f) << 6);
3309 unicode += (string[3] & 0x3f);
3312 unicode = (string[0] & 0x0f) << 24;
3313 unicode += ((string[1] & 0x3f) << 18);
3314 unicode += ((string[2] & 0x3f) << 12);
3315 unicode += ((string[3] & 0x3f) << 6);
3316 unicode += (string[4] & 0x3f);
3319 unicode = (string[0] & 0x01) << 30;
3320 unicode += ((string[1] & 0x3f) << 24);
3321 unicode += ((string[2] & 0x3f) << 18);
3322 unicode += ((string[3] & 0x3f) << 12);
3323 unicode += ((string[4] & 0x3f) << 6);
3324 unicode += (string[5] & 0x3f);
3327 die("Invalid unicode length");
3330 /* Invalid characters could return the special 0xfffd value but NUL
3331 * should be just as good. */
3332 return unicode > 0xffff ? 0 : unicode;
3335 /* Calculates how much of string can be shown within the given maximum width
3336 * and sets trimmed parameter to non-zero value if all of string could not be
3339 * Additionally, adds to coloffset how many many columns to move to align with
3340 * the expected position. Takes into account how multi-byte and double-width
3341 * characters will effect the cursor position.
3343 * Returns the number of bytes to output from string to satisfy max_width. */
3345 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3347 const char *start = string;
3348 const char *end = strchr(string, '\0');
3354 while (string < end) {
3355 int c = *(unsigned char *) string;
3356 unsigned char bytes = utf8_bytes[c];
3358 unsigned long unicode;
3360 if (string + bytes > end)
3363 /* Change representation to figure out whether
3364 * it is a single- or double-width character. */
3366 unicode = utf8_to_unicode(string, bytes);
3367 /* FIXME: Graceful handling of invalid unicode character. */
3371 ucwidth = unicode_width(unicode);
3373 if (width > max_width) {
3378 /* The column offset collects the differences between the
3379 * number of bytes encoding a character and the number of
3380 * columns will be used for rendering said character.
3382 * So if some character A is encoded in 2 bytes, but will be
3383 * represented on the screen using only 1 byte this will and up
3384 * adding 1 to the multi-byte column offset.
3386 * Assumes that no double-width character can be encoding in
3387 * less than two bytes. */
3388 if (bytes > ucwidth)
3389 mbwidth += bytes - ucwidth;
3394 *coloffset += mbwidth;
3396 return string - start;
3404 /* Whether or not the curses interface has been initialized. */
3405 static bool cursed = FALSE;
3407 /* The status window is used for polling keystrokes. */
3408 static WINDOW *status_win;
3410 static bool status_empty = TRUE;
3412 /* Update status and title window. */
3414 report(const char *msg, ...)
3416 struct view *view = display[current_view];
3421 if (!status_empty || *msg) {
3424 va_start(args, msg);
3426 wmove(status_win, 0, 0);
3428 vwprintw(status_win, msg, args);
3429 status_empty = FALSE;
3431 status_empty = TRUE;
3433 wclrtoeol(status_win);
3434 wrefresh(status_win);
3439 update_view_title(view);
3440 update_display_cursor(view);
3443 /* Controls when nodelay should be in effect when polling user input. */
3445 set_nonblocking_input(bool loading)
3447 static unsigned int loading_views;
3449 if ((loading == FALSE && loading_views-- == 1) ||
3450 (loading == TRUE && loading_views++ == 0))
3451 nodelay(status_win, loading);
3459 /* Initialize the curses library */
3460 if (isatty(STDIN_FILENO)) {
3461 cursed = !!initscr();
3463 /* Leave stdin and stdout alone when acting as a pager. */
3464 FILE *io = fopen("/dev/tty", "r+");
3467 die("Failed to open /dev/tty");
3468 cursed = !!newterm(NULL, io, io);
3472 die("Failed to initialize curses");
3474 nonl(); /* Tell curses not to do NL->CR/NL on output */
3475 cbreak(); /* Take input chars one at a time, no wait for \n */
3476 noecho(); /* Don't echo input */
3477 leaveok(stdscr, TRUE);
3482 getmaxyx(stdscr, y, x);
3483 status_win = newwin(1, 0, y - 1, 0);
3485 die("Failed to create status window");
3487 /* Enable keyboard mapping */
3488 keypad(status_win, TRUE);
3489 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3493 read_prompt(const char *prompt)
3495 enum { READING, STOP, CANCEL } status = READING;
3496 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3499 while (status == READING) {
3505 foreach_view (view, i)
3510 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3511 wclrtoeol(status_win);
3513 /* Refresh, accept single keystroke of input */
3514 key = wgetch(status_win);
3519 status = pos ? STOP : CANCEL;
3537 if (pos >= sizeof(buf)) {
3538 report("Input string too long");
3543 buf[pos++] = (char) key;
3547 /* Clear the status window */
3548 status_empty = FALSE;
3551 if (status == CANCEL)
3560 * Repository references
3563 static struct ref *refs;
3564 static size_t refs_size;
3566 /* Id <-> ref store */
3567 static struct ref ***id_refs;
3568 static size_t id_refs_size;
3570 static struct ref **
3573 struct ref ***tmp_id_refs;
3574 struct ref **ref_list = NULL;
3575 size_t ref_list_size = 0;
3578 for (i = 0; i < id_refs_size; i++)
3579 if (!strcmp(id, id_refs[i][0]->id))
3582 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3586 id_refs = tmp_id_refs;
3588 for (i = 0; i < refs_size; i++) {
3591 if (strcmp(id, refs[i].id))
3594 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3602 if (ref_list_size > 0)
3603 ref_list[ref_list_size - 1]->next = 1;
3604 ref_list[ref_list_size] = &refs[i];
3606 /* XXX: The properties of the commit chains ensures that we can
3607 * safely modify the shared ref. The repo references will
3608 * always be similar for the same id. */
3609 ref_list[ref_list_size]->next = 0;
3614 id_refs[id_refs_size++] = ref_list;
3620 read_ref(char *id, int idlen, char *name, int namelen)
3624 bool remote = FALSE;
3626 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3627 /* Commits referenced by tags has "^{}" appended. */
3628 if (name[namelen - 1] != '}')
3631 while (namelen > 0 && name[namelen] != '^')
3635 namelen -= STRING_SIZE("refs/tags/");
3636 name += STRING_SIZE("refs/tags/");
3638 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
3640 namelen -= STRING_SIZE("refs/remotes/");
3641 name += STRING_SIZE("refs/remotes/");
3643 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3644 namelen -= STRING_SIZE("refs/heads/");
3645 name += STRING_SIZE("refs/heads/");
3647 } else if (!strcmp(name, "HEAD")) {
3651 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3655 ref = &refs[refs_size++];
3656 ref->name = malloc(namelen + 1);
3660 strncpy(ref->name, name, namelen);
3661 ref->name[namelen] = 0;
3663 ref->remote = remote;
3664 string_copy_rev(ref->id, id);
3672 const char *cmd_env = getenv("TIG_LS_REMOTE");
3673 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3675 return read_properties(popen(cmd, "r"), "\t", read_ref);
3679 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3681 if (!strcmp(name, "i18n.commitencoding"))
3682 string_copy(opt_encoding, value);
3688 load_repo_config(void)
3690 return read_properties(popen("git repo-config --list", "r"),
3691 "=", read_repo_config_option);
3695 read_properties(FILE *pipe, const char *separators,
3696 int (*read_property)(char *, int, char *, int))
3698 char buffer[BUFSIZ];
3705 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3710 name = chomp_string(name);
3711 namelen = strcspn(name, separators);
3713 if (name[namelen]) {
3715 value = chomp_string(name + namelen + 1);
3716 valuelen = strlen(value);
3723 state = read_property(name, namelen, value, valuelen);
3726 if (state != ERR && ferror(pipe))
3739 static void __NORETURN
3742 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3748 static void __NORETURN
3749 die(const char *err, ...)
3755 va_start(args, err);
3756 fputs("tig: ", stderr);
3757 vfprintf(stderr, err, args);
3758 fputs("\n", stderr);
3765 main(int argc, char *argv[])
3768 enum request request;
3771 signal(SIGINT, quit);
3773 if (setlocale(LC_ALL, "")) {
3774 string_copy(opt_codeset, nl_langinfo(CODESET));
3777 if (load_options() == ERR)
3778 die("Failed to load user config.");
3780 /* Load the repo config file so options can be overwritten from
3781 * the command line. */
3782 if (load_repo_config() == ERR)
3783 die("Failed to load repo config.");
3785 if (!parse_options(argc, argv))
3788 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3789 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3790 if (opt_iconv == ICONV_NONE)
3791 die("Failed to initialize character set conversion");
3794 if (load_refs() == ERR)
3795 die("Failed to load refs.");
3797 /* Require a git repository unless when running in pager mode. */
3798 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3799 die("Not a git repository");
3801 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3802 view->cmd_env = getenv(view->cmd_env);
3804 request = opt_request;
3808 while (view_driver(display[current_view], request)) {
3812 foreach_view (view, i)
3815 /* Refresh, accept single keystroke of input */
3816 key = wgetch(status_win);
3818 /* wgetch() with nodelay() enabled returns ERR when there's no
3825 request = get_keybinding(display[current_view]->keymap, key);
3827 /* Some low-level request handling. This keeps access to
3828 * status_win restricted. */
3832 char *cmd = read_prompt(":");
3834 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3835 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3836 opt_request = REQ_VIEW_DIFF;
3838 opt_request = REQ_VIEW_PAGER;
3847 case REQ_SEARCH_BACK:
3849 const char *prompt = request == REQ_SEARCH
3851 char *search = read_prompt(prompt);
3854 string_copy(opt_search, search);
3859 case REQ_SCREEN_RESIZE:
3863 getmaxyx(stdscr, height, width);
3865 /* Resize the status view and let the view driver take
3866 * care of resizing the displayed views. */
3867 wresize(status_win, 1, width);
3868 mvwin(status_win, height - 1, 0);
3869 wrefresh(status_win);