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)
177 chomp_string(char *name)
181 while (isspace(*name))
184 namelen = strlen(name) - 1;
185 while (namelen > 0 && isspace(name[namelen]))
192 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
195 size_t pos = bufpos ? *bufpos : 0;
198 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
204 return pos >= bufsize ? FALSE : TRUE;
207 #define string_format(buf, fmt, args...) \
208 string_nformat(buf, sizeof(buf), NULL, fmt, args)
210 #define string_format_from(buf, from, fmt, args...) \
211 string_nformat(buf, sizeof(buf), from, fmt, args)
214 string_enum_compare(const char *str1, const char *str2, int len)
218 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
220 /* Diff-Header == DIFF_HEADER */
221 for (i = 0; i < len; i++) {
222 if (toupper(str1[i]) == toupper(str2[i]))
225 if (string_enum_sep(str1[i]) &&
226 string_enum_sep(str2[i]))
229 return str1[i] - str2[i];
237 * NOTE: The following is a slightly modified copy of the git project's shell
238 * quoting routines found in the quote.c file.
240 * Help to copy the thing properly quoted for the shell safety. any single
241 * quote is replaced with '\'', any exclamation point is replaced with '\!',
242 * and the whole thing is enclosed in a
245 * original sq_quote result
246 * name ==> name ==> 'name'
247 * a b ==> a b ==> 'a b'
248 * a'b ==> a'\''b ==> 'a'\''b'
249 * a!b ==> a'\!'b ==> 'a'\!'b'
253 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
257 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
260 while ((c = *src++)) {
261 if (c == '\'' || c == '!') {
272 if (bufsize < SIZEOF_STR)
284 /* XXX: Keep the view request first and in sync with views[]. */ \
285 REQ_GROUP("View switching") \
286 REQ_(VIEW_MAIN, "Show main view"), \
287 REQ_(VIEW_DIFF, "Show diff view"), \
288 REQ_(VIEW_LOG, "Show log view"), \
289 REQ_(VIEW_TREE, "Show tree view"), \
290 REQ_(VIEW_BLOB, "Show blob view"), \
291 REQ_(VIEW_HELP, "Show help page"), \
292 REQ_(VIEW_PAGER, "Show pager view"), \
294 REQ_GROUP("View manipulation") \
295 REQ_(ENTER, "Enter current line and scroll"), \
296 REQ_(NEXT, "Move to next"), \
297 REQ_(PREVIOUS, "Move to previous"), \
298 REQ_(VIEW_NEXT, "Move focus to next view"), \
299 REQ_(VIEW_CLOSE, "Close the current view"), \
300 REQ_(QUIT, "Close all views and quit"), \
302 REQ_GROUP("Cursor navigation") \
303 REQ_(MOVE_UP, "Move cursor one line up"), \
304 REQ_(MOVE_DOWN, "Move cursor one line down"), \
305 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
306 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
307 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
308 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
310 REQ_GROUP("Scrolling") \
311 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
312 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
313 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
314 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
316 REQ_GROUP("Searching") \
317 REQ_(SEARCH, "Search the view"), \
318 REQ_(SEARCH_BACK, "Search backwards in the view"), \
319 REQ_(FIND_NEXT, "Find next search match"), \
320 REQ_(FIND_PREV, "Find previous search match"), \
323 REQ_(NONE, "Do nothing"), \
324 REQ_(PROMPT, "Bring up the prompt"), \
325 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
326 REQ_(SCREEN_RESIZE, "Resize the screen"), \
327 REQ_(SHOW_VERSION, "Show version information"), \
328 REQ_(STOP_LOADING, "Stop all loading views"), \
329 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
330 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
333 /* User action requests. */
335 #define REQ_GROUP(help)
336 #define REQ_(req, help) REQ_##req
338 /* Offset all requests to avoid conflicts with ncurses getch values. */
339 REQ_OFFSET = KEY_MAX + 1,
347 struct request_info {
348 enum request request;
354 static struct request_info req_info[] = {
355 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
356 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
363 get_request(const char *name)
365 int namelen = strlen(name);
368 for (i = 0; i < ARRAY_SIZE(req_info); i++)
369 if (req_info[i].namelen == namelen &&
370 !string_enum_compare(req_info[i].name, name, namelen))
371 return req_info[i].request;
381 static const char usage[] =
382 VERSION " (" __DATE__ ")\n"
384 "Usage: tig [options]\n"
385 " or: tig [options] [--] [git log options]\n"
386 " or: tig [options] log [git log options]\n"
387 " or: tig [options] diff [git diff options]\n"
388 " or: tig [options] show [git show options]\n"
389 " or: tig [options] < [git command output]\n"
392 " -l Start up in log view\n"
393 " -d Start up in diff view\n"
394 " -n[I], --line-number[=I] Show line numbers with given interval\n"
395 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
396 " -- Mark end of tig options\n"
397 " -v, --version Show version and exit\n"
398 " -h, --help Show help message and exit\n";
400 /* Option and state variables. */
401 static bool opt_line_number = FALSE;
402 static bool opt_rev_graph = FALSE;
403 static int opt_num_interval = NUMBER_INTERVAL;
404 static int opt_tab_size = TABSIZE;
405 static enum request opt_request = REQ_VIEW_MAIN;
406 static char opt_cmd[SIZEOF_STR] = "";
407 static char opt_path[SIZEOF_STR] = "";
408 static FILE *opt_pipe = NULL;
409 static char opt_encoding[20] = "UTF-8";
410 static bool opt_utf8 = TRUE;
411 static char opt_codeset[20] = "UTF-8";
412 static iconv_t opt_iconv = ICONV_NONE;
413 static char opt_search[SIZEOF_STR] = "";
421 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
431 int namelen = strlen(name);
435 if (strncmp(opt, name, namelen))
438 if (opt[namelen] == '=')
439 value = opt + namelen + 1;
442 if (!short_name || opt[1] != short_name)
447 va_start(args, type);
448 if (type == OPT_INT) {
449 number = va_arg(args, int *);
451 *number = atoi(value);
458 /* Returns the index of log or diff command or -1 to exit. */
460 parse_options(int argc, char *argv[])
464 for (i = 1; i < argc; i++) {
467 if (!strcmp(opt, "log") ||
468 !strcmp(opt, "diff") ||
469 !strcmp(opt, "show")) {
470 opt_request = opt[0] == 'l'
471 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
475 if (opt[0] && opt[0] != '-')
478 if (!strcmp(opt, "-l")) {
479 opt_request = REQ_VIEW_LOG;
483 if (!strcmp(opt, "-d")) {
484 opt_request = REQ_VIEW_DIFF;
488 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
489 opt_line_number = TRUE;
493 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
494 opt_tab_size = MIN(opt_tab_size, TABSIZE);
498 if (check_option(opt, 'v', "version", OPT_NONE)) {
499 printf("tig version %s\n", VERSION);
503 if (check_option(opt, 'h', "help", OPT_NONE)) {
508 if (!strcmp(opt, "--")) {
513 die("unknown option '%s'\n\n%s", opt, usage);
516 if (!isatty(STDIN_FILENO)) {
517 opt_request = REQ_VIEW_PAGER;
520 } else if (i < argc) {
523 if (opt_request == REQ_VIEW_MAIN)
524 /* XXX: This is vulnerable to the user overriding
525 * options required for the main view parser. */
526 string_copy(opt_cmd, "git log --pretty=raw");
528 string_copy(opt_cmd, "git");
529 buf_size = strlen(opt_cmd);
531 while (buf_size < sizeof(opt_cmd) && i < argc) {
532 opt_cmd[buf_size++] = ' ';
533 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
536 if (buf_size >= sizeof(opt_cmd))
537 die("command too long");
539 opt_cmd[buf_size] = 0;
542 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
550 * Line-oriented content detection.
554 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
556 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
557 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
558 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
563 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
564 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
565 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
566 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
567 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
568 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
569 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
570 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
571 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
572 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
573 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
574 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
575 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
576 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
577 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
578 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
579 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
580 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
583 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
584 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
585 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
586 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
587 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
588 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
589 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
590 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
591 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
592 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
593 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
594 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
595 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
598 #define LINE(type, line, fg, bg, attr) \
605 const char *name; /* Option name. */
606 int namelen; /* Size of option name. */
607 const char *line; /* The start of line to match. */
608 int linelen; /* Size of string to match. */
609 int fg, bg, attr; /* Color and text attributes for the lines. */
612 static struct line_info line_info[] = {
613 #define LINE(type, line, fg, bg, attr) \
614 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
619 static enum line_type
620 get_line_type(char *line)
622 int linelen = strlen(line);
625 for (type = 0; type < ARRAY_SIZE(line_info); type++)
626 /* Case insensitive search matches Signed-off-by lines better. */
627 if (linelen >= line_info[type].linelen &&
628 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
635 get_line_attr(enum line_type type)
637 assert(type < ARRAY_SIZE(line_info));
638 return COLOR_PAIR(type) | line_info[type].attr;
641 static struct line_info *
642 get_line_info(char *name, int namelen)
646 for (type = 0; type < ARRAY_SIZE(line_info); type++)
647 if (namelen == line_info[type].namelen &&
648 !string_enum_compare(line_info[type].name, name, namelen))
649 return &line_info[type];
657 int default_bg = COLOR_BLACK;
658 int default_fg = COLOR_WHITE;
663 if (use_default_colors() != ERR) {
668 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
669 struct line_info *info = &line_info[type];
670 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
671 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
673 init_pair(type, fg, bg);
681 unsigned int selected:1;
683 void *data; /* User data */
693 enum request request;
694 struct keybinding *next;
697 static struct keybinding default_keybindings[] = {
699 { 'm', REQ_VIEW_MAIN },
700 { 'd', REQ_VIEW_DIFF },
701 { 'l', REQ_VIEW_LOG },
702 { 't', REQ_VIEW_TREE },
703 { 'f', REQ_VIEW_BLOB },
704 { 'p', REQ_VIEW_PAGER },
705 { 'h', REQ_VIEW_HELP },
707 /* View manipulation */
708 { 'q', REQ_VIEW_CLOSE },
709 { KEY_TAB, REQ_VIEW_NEXT },
710 { KEY_RETURN, REQ_ENTER },
711 { KEY_UP, REQ_PREVIOUS },
712 { KEY_DOWN, REQ_NEXT },
714 /* Cursor navigation */
715 { 'k', REQ_MOVE_UP },
716 { 'j', REQ_MOVE_DOWN },
717 { KEY_HOME, REQ_MOVE_FIRST_LINE },
718 { KEY_END, REQ_MOVE_LAST_LINE },
719 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
720 { ' ', REQ_MOVE_PAGE_DOWN },
721 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
722 { 'b', REQ_MOVE_PAGE_UP },
723 { '-', REQ_MOVE_PAGE_UP },
726 { KEY_IC, REQ_SCROLL_LINE_UP },
727 { KEY_DC, REQ_SCROLL_LINE_DOWN },
728 { 'w', REQ_SCROLL_PAGE_UP },
729 { 's', REQ_SCROLL_PAGE_DOWN },
733 { '?', REQ_SEARCH_BACK },
734 { 'n', REQ_FIND_NEXT },
735 { 'N', REQ_FIND_PREV },
739 { 'z', REQ_STOP_LOADING },
740 { 'v', REQ_SHOW_VERSION },
741 { 'r', REQ_SCREEN_REDRAW },
742 { '.', REQ_TOGGLE_LINENO },
743 { 'g', REQ_TOGGLE_REV_GRAPH },
746 /* Using the ncurses SIGWINCH handler. */
747 { KEY_RESIZE, REQ_SCREEN_RESIZE },
750 #define KEYMAP_INFO \
761 #define KEYMAP_(name) KEYMAP_##name
766 static struct int_map keymap_table[] = {
767 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
772 #define set_keymap(map, name) \
773 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
775 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
778 add_keybinding(enum keymap keymap, enum request request, int key)
780 struct keybinding *keybinding;
782 keybinding = calloc(1, sizeof(*keybinding));
784 die("Failed to allocate keybinding");
786 keybinding->alias = key;
787 keybinding->request = request;
788 keybinding->next = keybindings[keymap];
789 keybindings[keymap] = keybinding;
792 /* Looks for a key binding first in the given map, then in the generic map, and
793 * lastly in the default keybindings. */
795 get_keybinding(enum keymap keymap, int key)
797 struct keybinding *kbd;
800 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
801 if (kbd->alias == key)
804 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
805 if (kbd->alias == key)
808 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
809 if (default_keybindings[i].alias == key)
810 return default_keybindings[i].request;
812 return (enum request) key;
821 static struct key key_table[] = {
822 { "Enter", KEY_RETURN },
824 { "Backspace", KEY_BACKSPACE },
826 { "Escape", KEY_ESC },
827 { "Left", KEY_LEFT },
828 { "Right", KEY_RIGHT },
830 { "Down", KEY_DOWN },
831 { "Insert", KEY_IC },
832 { "Delete", KEY_DC },
834 { "Home", KEY_HOME },
836 { "PageUp", KEY_PPAGE },
837 { "PageDown", KEY_NPAGE },
847 { "F10", KEY_F(10) },
848 { "F11", KEY_F(11) },
849 { "F12", KEY_F(12) },
853 get_key_value(const char *name)
857 for (i = 0; i < ARRAY_SIZE(key_table); i++)
858 if (!strcasecmp(key_table[i].name, name))
859 return key_table[i].value;
861 if (strlen(name) == 1 && isprint(*name))
868 get_key(enum request request)
870 static char buf[BUFSIZ];
871 static char key_char[] = "'X'";
878 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
879 struct keybinding *keybinding = &default_keybindings[i];
883 if (keybinding->request != request)
886 for (key = 0; key < ARRAY_SIZE(key_table); key++)
887 if (key_table[key].value == keybinding->alias)
888 seq = key_table[key].name;
891 keybinding->alias < 127 &&
892 isprint(keybinding->alias)) {
893 key_char[1] = (char) keybinding->alias;
900 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
901 return "Too many keybindings!";
910 * User config file handling.
913 static struct int_map color_map[] = {
914 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
926 #define set_color(color, name) \
927 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
929 static struct int_map attr_map[] = {
930 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
940 #define set_attribute(attr, name) \
941 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
943 static int config_lineno;
944 static bool config_errors;
945 static char *config_msg;
947 /* Wants: object fgcolor bgcolor [attr] */
949 option_color_command(int argc, char *argv[])
951 struct line_info *info;
953 if (argc != 3 && argc != 4) {
954 config_msg = "Wrong number of arguments given to color command";
958 info = get_line_info(argv[0], strlen(argv[0]));
960 config_msg = "Unknown color name";
964 if (set_color(&info->fg, argv[1]) == ERR ||
965 set_color(&info->bg, argv[2]) == ERR) {
966 config_msg = "Unknown color";
970 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
971 config_msg = "Unknown attribute";
978 /* Wants: name = value */
980 option_set_command(int argc, char *argv[])
983 config_msg = "Wrong number of arguments given to set command";
987 if (strcmp(argv[1], "=")) {
988 config_msg = "No value assigned";
992 if (!strcmp(argv[0], "show-rev-graph")) {
993 opt_rev_graph = (!strcmp(argv[2], "1") ||
994 !strcmp(argv[2], "true") ||
995 !strcmp(argv[2], "yes"));
999 if (!strcmp(argv[0], "line-number-interval")) {
1000 opt_num_interval = atoi(argv[2]);
1004 if (!strcmp(argv[0], "tab-size")) {
1005 opt_tab_size = atoi(argv[2]);
1009 if (!strcmp(argv[0], "commit-encoding")) {
1010 char *arg = argv[2];
1011 int delimiter = *arg;
1014 switch (delimiter) {
1017 for (arg++, i = 0; arg[i]; i++)
1018 if (arg[i] == delimiter) {
1023 string_copy(opt_encoding, arg);
1028 config_msg = "Unknown variable name";
1032 /* Wants: mode request key */
1034 option_bind_command(int argc, char *argv[])
1036 enum request request;
1041 config_msg = "Wrong number of arguments given to bind command";
1045 if (set_keymap(&keymap, argv[0]) == ERR) {
1046 config_msg = "Unknown key map";
1050 key = get_key_value(argv[1]);
1052 config_msg = "Unknown key";
1056 request = get_request(argv[2]);
1057 if (request == REQ_UNKNOWN) {
1058 config_msg = "Unknown request name";
1062 add_keybinding(keymap, request, key);
1068 set_option(char *opt, char *value)
1075 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1076 argv[argc++] = value;
1083 while (isspace(*value))
1087 if (!strcmp(opt, "color"))
1088 return option_color_command(argc, argv);
1090 if (!strcmp(opt, "set"))
1091 return option_set_command(argc, argv);
1093 if (!strcmp(opt, "bind"))
1094 return option_bind_command(argc, argv);
1096 config_msg = "Unknown option command";
1101 read_option(char *opt, int optlen, char *value, int valuelen)
1106 config_msg = "Internal error";
1108 /* Check for comment markers, since read_properties() will
1109 * only ensure opt and value are split at first " \t". */
1110 optlen = strcspn(opt, "#");
1114 if (opt[optlen] != 0) {
1115 config_msg = "No option value";
1119 /* Look for comment endings in the value. */
1120 int len = strcspn(value, "#");
1122 if (len < valuelen) {
1124 value[valuelen] = 0;
1127 status = set_option(opt, value);
1130 if (status == ERR) {
1131 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1132 config_lineno, optlen, opt, config_msg);
1133 config_errors = TRUE;
1136 /* Always keep going if errors are encountered. */
1143 char *home = getenv("HOME");
1144 char buf[SIZEOF_STR];
1148 config_errors = FALSE;
1150 if (!home || !string_format(buf, "%s/.tigrc", home))
1153 /* It's ok that the file doesn't exist. */
1154 file = fopen(buf, "r");
1158 if (read_properties(file, " \t", read_option) == ERR ||
1159 config_errors == TRUE)
1160 fprintf(stderr, "Errors while loading %s.\n", buf);
1173 /* The display array of active views and the index of the current view. */
1174 static struct view *display[2];
1175 static unsigned int current_view;
1177 /* Reading from the prompt? */
1178 static bool input_mode = FALSE;
1180 #define foreach_displayed_view(view, i) \
1181 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1183 #define displayed_views() (display[1] != NULL ? 2 : 1)
1185 /* Current head and commit ID */
1186 static char ref_blob[SIZEOF_REF] = "";
1187 static char ref_commit[SIZEOF_REF] = "HEAD";
1188 static char ref_head[SIZEOF_REF] = "HEAD";
1191 const char *name; /* View name */
1192 const char *cmd_fmt; /* Default command line format */
1193 const char *cmd_env; /* Command line set via environment */
1194 const char *id; /* Points to either of ref_{head,commit,blob} */
1196 struct view_ops *ops; /* View operations */
1198 enum keymap keymap; /* What keymap does this view have */
1200 char cmd[SIZEOF_STR]; /* Command buffer */
1201 char ref[SIZEOF_REF]; /* Hovered commit reference */
1202 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1204 int height, width; /* The width and height of the main window */
1205 WINDOW *win; /* The main window */
1206 WINDOW *title; /* The title window living below the main window */
1209 unsigned long offset; /* Offset of the window top */
1210 unsigned long lineno; /* Current line number */
1213 char grep[SIZEOF_STR]; /* Search string */
1214 regex_t *regex; /* Pre-compiled regex */
1216 /* If non-NULL, points to the view that opened this view. If this view
1217 * is closed tig will switch back to the parent view. */
1218 struct view *parent;
1221 unsigned long lines; /* Total number of lines */
1222 struct line *line; /* Line index */
1223 unsigned long line_size;/* Total number of allocated lines */
1224 unsigned int digits; /* Number of digits in the lines member. */
1232 /* What type of content being displayed. Used in the title bar. */
1234 /* Draw one line; @lineno must be < view->height. */
1235 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1236 /* Read one line; updates view->line. */
1237 bool (*read)(struct view *view, char *data);
1238 /* Depending on view, change display based on current line. */
1239 bool (*enter)(struct view *view, struct line *line);
1240 /* Search for regex in a line. */
1241 bool (*grep)(struct view *view, struct line *line);
1243 void (*select)(struct view *view, struct line *line);
1246 static struct view_ops pager_ops;
1247 static struct view_ops main_ops;
1248 static struct view_ops tree_ops;
1249 static struct view_ops blob_ops;
1251 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1252 { name, cmd, #env, ref, ops, map}
1254 #define VIEW_(id, name, ops, ref) \
1255 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1258 static struct view views[] = {
1259 VIEW_(MAIN, "main", &main_ops, ref_head),
1260 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1261 VIEW_(LOG, "log", &pager_ops, ref_head),
1262 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1263 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1264 VIEW_(HELP, "help", &pager_ops, "static"),
1265 VIEW_(PAGER, "pager", &pager_ops, "static"),
1268 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1270 #define foreach_view(view, i) \
1271 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1273 #define view_is_displayed(view) \
1274 (view == display[0] || view == display[1])
1277 draw_view_line(struct view *view, unsigned int lineno)
1280 bool selected = (view->offset + lineno == view->lineno);
1283 assert(view_is_displayed(view));
1285 if (view->offset + lineno >= view->lines)
1288 line = &view->line[view->offset + lineno];
1291 line->selected = TRUE;
1292 view->ops->select(view, line);
1293 } else if (line->selected) {
1294 line->selected = FALSE;
1295 wmove(view->win, lineno, 0);
1296 wclrtoeol(view->win);
1299 scrollok(view->win, FALSE);
1300 draw_ok = view->ops->draw(view, line, lineno, selected);
1301 scrollok(view->win, TRUE);
1307 redraw_view_from(struct view *view, int lineno)
1309 assert(0 <= lineno && lineno < view->height);
1311 for (; lineno < view->height; lineno++) {
1312 if (!draw_view_line(view, lineno))
1316 redrawwin(view->win);
1318 wnoutrefresh(view->win);
1320 wrefresh(view->win);
1324 redraw_view(struct view *view)
1327 redraw_view_from(view, 0);
1332 update_view_title(struct view *view)
1334 char buf[SIZEOF_STR];
1335 char state[SIZEOF_STR];
1336 size_t bufpos = 0, statelen = 0;
1338 assert(view_is_displayed(view));
1340 if (view->lines || view->pipe) {
1341 unsigned int view_lines = view->offset + view->height;
1342 unsigned int lines = view->lines
1343 ? MIN(view_lines, view->lines) * 100 / view->lines
1346 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1353 time_t secs = time(NULL) - view->start_time;
1355 /* Three git seconds are a long time ... */
1357 string_format_from(state, &statelen, " %lds", secs);
1361 string_format_from(buf, &bufpos, "[%s]", view->name);
1362 if (*view->ref && bufpos < view->width) {
1363 size_t refsize = strlen(view->ref);
1364 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1366 if (minsize < view->width)
1367 refsize = view->width - minsize + 7;
1368 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1371 if (statelen && bufpos < view->width) {
1372 string_format_from(buf, &bufpos, " %s", state);
1375 if (view == display[current_view])
1376 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1378 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1380 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1381 wclrtoeol(view->title);
1382 wmove(view->title, 0, view->width - 1);
1385 wnoutrefresh(view->title);
1387 wrefresh(view->title);
1391 resize_display(void)
1394 struct view *base = display[0];
1395 struct view *view = display[1] ? display[1] : display[0];
1397 /* Setup window dimensions */
1399 getmaxyx(stdscr, base->height, base->width);
1401 /* Make room for the status window. */
1405 /* Horizontal split. */
1406 view->width = base->width;
1407 view->height = SCALE_SPLIT_VIEW(base->height);
1408 base->height -= view->height;
1410 /* Make room for the title bar. */
1414 /* Make room for the title bar. */
1419 foreach_displayed_view (view, i) {
1421 view->win = newwin(view->height, 0, offset, 0);
1423 die("Failed to create %s view", view->name);
1425 scrollok(view->win, TRUE);
1427 view->title = newwin(1, 0, offset + view->height, 0);
1429 die("Failed to create title window");
1432 wresize(view->win, view->height, view->width);
1433 mvwin(view->win, offset, 0);
1434 mvwin(view->title, offset + view->height, 0);
1437 offset += view->height + 1;
1442 redraw_display(void)
1447 foreach_displayed_view (view, i) {
1449 update_view_title(view);
1454 update_display_cursor(struct view *view)
1456 /* Move the cursor to the right-most column of the cursor line.
1458 * XXX: This could turn out to be a bit expensive, but it ensures that
1459 * the cursor does not jump around. */
1461 wmove(view->win, view->lineno - view->offset, view->width - 1);
1462 wrefresh(view->win);
1470 /* Scrolling backend */
1472 do_scroll_view(struct view *view, int lines)
1474 bool redraw_current_line = FALSE;
1476 /* The rendering expects the new offset. */
1477 view->offset += lines;
1479 assert(0 <= view->offset && view->offset < view->lines);
1482 /* Move current line into the view. */
1483 if (view->lineno < view->offset) {
1484 view->lineno = view->offset;
1485 redraw_current_line = TRUE;
1486 } else if (view->lineno >= view->offset + view->height) {
1487 view->lineno = view->offset + view->height - 1;
1488 redraw_current_line = TRUE;
1491 assert(view->offset <= view->lineno && view->lineno < view->lines);
1493 /* Redraw the whole screen if scrolling is pointless. */
1494 if (view->height < ABS(lines)) {
1498 int line = lines > 0 ? view->height - lines : 0;
1499 int end = line + ABS(lines);
1501 wscrl(view->win, lines);
1503 for (; line < end; line++) {
1504 if (!draw_view_line(view, line))
1508 if (redraw_current_line)
1509 draw_view_line(view, view->lineno - view->offset);
1512 redrawwin(view->win);
1513 wrefresh(view->win);
1517 /* Scroll frontend */
1519 scroll_view(struct view *view, enum request request)
1523 assert(view_is_displayed(view));
1526 case REQ_SCROLL_PAGE_DOWN:
1527 lines = view->height;
1528 case REQ_SCROLL_LINE_DOWN:
1529 if (view->offset + lines > view->lines)
1530 lines = view->lines - view->offset;
1532 if (lines == 0 || view->offset + view->height >= view->lines) {
1533 report("Cannot scroll beyond the last line");
1538 case REQ_SCROLL_PAGE_UP:
1539 lines = view->height;
1540 case REQ_SCROLL_LINE_UP:
1541 if (lines > view->offset)
1542 lines = view->offset;
1545 report("Cannot scroll beyond the first line");
1553 die("request %d not handled in switch", request);
1556 do_scroll_view(view, lines);
1561 move_view(struct view *view, enum request request)
1563 int scroll_steps = 0;
1567 case REQ_MOVE_FIRST_LINE:
1568 steps = -view->lineno;
1571 case REQ_MOVE_LAST_LINE:
1572 steps = view->lines - view->lineno - 1;
1575 case REQ_MOVE_PAGE_UP:
1576 steps = view->height > view->lineno
1577 ? -view->lineno : -view->height;
1580 case REQ_MOVE_PAGE_DOWN:
1581 steps = view->lineno + view->height >= view->lines
1582 ? view->lines - view->lineno - 1 : view->height;
1594 die("request %d not handled in switch", request);
1597 if (steps <= 0 && view->lineno == 0) {
1598 report("Cannot move beyond the first line");
1601 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1602 report("Cannot move beyond the last line");
1606 /* Move the current line */
1607 view->lineno += steps;
1608 assert(0 <= view->lineno && view->lineno < view->lines);
1610 /* Check whether the view needs to be scrolled */
1611 if (view->lineno < view->offset ||
1612 view->lineno >= view->offset + view->height) {
1613 scroll_steps = steps;
1614 if (steps < 0 && -steps > view->offset) {
1615 scroll_steps = -view->offset;
1617 } else if (steps > 0) {
1618 if (view->lineno == view->lines - 1 &&
1619 view->lines > view->height) {
1620 scroll_steps = view->lines - view->offset - 1;
1621 if (scroll_steps >= view->height)
1622 scroll_steps -= view->height - 1;
1627 if (!view_is_displayed(view)) {
1628 view->offset += scroll_steps;
1629 assert(0 <= view->offset && view->offset < view->lines);
1630 view->ops->select(view, &view->line[view->lineno]);
1634 /* Repaint the old "current" line if we be scrolling */
1635 if (ABS(steps) < view->height)
1636 draw_view_line(view, view->lineno - steps - view->offset);
1639 do_scroll_view(view, scroll_steps);
1643 /* Draw the current line */
1644 draw_view_line(view, view->lineno - view->offset);
1646 redrawwin(view->win);
1647 wrefresh(view->win);
1656 static void search_view(struct view *view, enum request request);
1659 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1661 assert(view_is_displayed(view));
1663 if (!view->ops->grep(view, line))
1666 if (lineno - view->offset >= view->height) {
1667 view->offset = lineno;
1668 view->lineno = lineno;
1672 unsigned long old_lineno = view->lineno - view->offset;
1674 view->lineno = lineno;
1675 draw_view_line(view, old_lineno);
1677 draw_view_line(view, view->lineno - view->offset);
1678 redrawwin(view->win);
1679 wrefresh(view->win);
1682 report("Line %ld matches '%s'", lineno + 1, view->grep);
1687 find_next(struct view *view, enum request request)
1689 unsigned long lineno = view->lineno;
1694 report("No previous search");
1696 search_view(view, request);
1706 case REQ_SEARCH_BACK:
1715 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1716 lineno += direction;
1718 /* Note, lineno is unsigned long so will wrap around in which case it
1719 * will become bigger than view->lines. */
1720 for (; lineno < view->lines; lineno += direction) {
1721 struct line *line = &view->line[lineno];
1723 if (find_next_line(view, lineno, line))
1727 report("No match found for '%s'", view->grep);
1731 search_view(struct view *view, enum request request)
1736 regfree(view->regex);
1739 view->regex = calloc(1, sizeof(*view->regex));
1744 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1745 if (regex_err != 0) {
1746 char buf[SIZEOF_STR] = "unknown error";
1748 regerror(regex_err, view->regex, buf, sizeof(buf));
1749 report("Search failed: %s", buf);
1753 string_copy(view->grep, opt_search);
1755 find_next(view, request);
1759 * Incremental updating
1763 end_update(struct view *view)
1767 set_nonblocking_input(FALSE);
1768 if (view->pipe == stdin)
1776 begin_update(struct view *view)
1778 const char *id = view->id;
1784 string_copy(view->cmd, opt_cmd);
1786 /* When running random commands, the view ref could have become
1787 * invalid so clear it. */
1790 } else if (view == VIEW(REQ_VIEW_TREE)) {
1791 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1792 char path[SIZEOF_STR];
1794 if (strcmp(view->vid, view->id))
1795 opt_path[0] = path[0] = 0;
1796 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
1799 if (!string_format(view->cmd, format, id, path))
1803 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1805 if (!string_format(view->cmd, format, id, id, id, id, id))
1809 /* Special case for the pager view. */
1811 view->pipe = opt_pipe;
1814 view->pipe = popen(view->cmd, "r");
1820 set_nonblocking_input(TRUE);
1825 string_copy(view->vid, id);
1830 for (i = 0; i < view->lines; i++)
1831 if (view->line[i].data)
1832 free(view->line[i].data);
1838 view->start_time = time(NULL);
1843 static struct line *
1844 realloc_lines(struct view *view, size_t line_size)
1846 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1852 view->line_size = line_size;
1857 update_view(struct view *view)
1859 char in_buffer[BUFSIZ];
1860 char out_buffer[BUFSIZ * 2];
1862 /* The number of lines to read. If too low it will cause too much
1863 * redrawing (and possible flickering), if too high responsiveness
1865 unsigned long lines = view->height;
1866 int redraw_from = -1;
1871 /* Only redraw if lines are visible. */
1872 if (view->offset + view->height >= view->lines)
1873 redraw_from = view->lines - view->offset;
1875 /* FIXME: This is probably not perfect for backgrounded views. */
1876 if (!realloc_lines(view, view->lines + lines))
1879 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1880 size_t linelen = strlen(line);
1883 line[linelen - 1] = 0;
1885 if (opt_iconv != ICONV_NONE) {
1887 size_t inlen = linelen;
1889 char *outbuf = out_buffer;
1890 size_t outlen = sizeof(out_buffer);
1894 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1895 if (ret != (size_t) -1) {
1897 linelen = strlen(out_buffer);
1901 if (!view->ops->read(view, line))
1911 lines = view->lines;
1912 for (digits = 0; lines; digits++)
1915 /* Keep the displayed view in sync with line number scaling. */
1916 if (digits != view->digits) {
1917 view->digits = digits;
1922 if (!view_is_displayed(view))
1925 if (view == VIEW(REQ_VIEW_TREE)) {
1926 /* Clear the view and redraw everything since the tree sorting
1927 * might have rearranged things. */
1930 } else if (redraw_from >= 0) {
1931 /* If this is an incremental update, redraw the previous line
1932 * since for commits some members could have changed when
1933 * loading the main view. */
1934 if (redraw_from > 0)
1937 /* Since revision graph visualization requires knowledge
1938 * about the parent commit, it causes a further one-off
1939 * needed to be redrawn for incremental updates. */
1940 if (redraw_from > 0 && opt_rev_graph)
1943 /* Incrementally draw avoids flickering. */
1944 redraw_view_from(view, redraw_from);
1947 /* Update the title _after_ the redraw so that if the redraw picks up a
1948 * commit reference in view->ref it'll be available here. */
1949 update_view_title(view);
1952 if (ferror(view->pipe)) {
1953 report("Failed to read: %s", strerror(errno));
1956 } else if (feof(view->pipe)) {
1964 report("Allocation failure");
1967 view->ops->read(view, NULL);
1972 static struct line *
1973 add_line_text(struct view *view, char *data, enum line_type type)
1975 struct line *line = &view->line[view->lines];
1980 line->data = strdup(data);
1995 static void open_help_view(struct view *view)
1998 int lines = ARRAY_SIZE(req_info) + 2;
2001 if (view->lines > 0)
2004 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2005 if (!req_info[i].request)
2008 view->line = calloc(lines, sizeof(*view->line));
2010 report("Allocation failure");
2014 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2016 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2019 if (!req_info[i].request) {
2020 add_line_text(view, "", LINE_DEFAULT);
2021 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2025 key = get_key(req_info[i].request);
2026 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
2029 add_line_text(view, buf, LINE_DEFAULT);
2034 OPEN_DEFAULT = 0, /* Use default view switching. */
2035 OPEN_SPLIT = 1, /* Split current view. */
2036 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2037 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2041 open_view(struct view *prev, enum request request, enum open_flags flags)
2043 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2044 bool split = !!(flags & OPEN_SPLIT);
2045 bool reload = !!(flags & OPEN_RELOAD);
2046 struct view *view = VIEW(request);
2047 int nviews = displayed_views();
2048 struct view *base_view = display[0];
2050 if (view == prev && nviews == 1 && !reload) {
2051 report("Already in %s view", view->name);
2055 if (view == VIEW(REQ_VIEW_HELP)) {
2056 open_help_view(view);
2058 } else if ((reload || strcmp(view->vid, view->id)) &&
2059 !begin_update(view)) {
2060 report("Failed to load %s view", view->name);
2069 /* Maximize the current view. */
2070 memset(display, 0, sizeof(display));
2072 display[current_view] = view;
2075 /* Resize the view when switching between split- and full-screen,
2076 * or when switching between two different full-screen views. */
2077 if (nviews != displayed_views() ||
2078 (nviews == 1 && base_view != display[0]))
2081 if (split && prev->lineno - prev->offset >= prev->height) {
2082 /* Take the title line into account. */
2083 int lines = prev->lineno - prev->offset - prev->height + 1;
2085 /* Scroll the view that was split if the current line is
2086 * outside the new limited view. */
2087 do_scroll_view(prev, lines);
2090 if (prev && view != prev) {
2091 if (split && !backgrounded) {
2092 /* "Blur" the previous view. */
2093 update_view_title(prev);
2096 view->parent = prev;
2099 if (view->pipe && view->lines == 0) {
2100 /* Clear the old view and let the incremental updating refill
2109 /* If the view is backgrounded the above calls to report()
2110 * won't redraw the view title. */
2112 update_view_title(view);
2117 * User request switch noodle
2121 view_driver(struct view *view, enum request request)
2128 case REQ_MOVE_PAGE_UP:
2129 case REQ_MOVE_PAGE_DOWN:
2130 case REQ_MOVE_FIRST_LINE:
2131 case REQ_MOVE_LAST_LINE:
2132 move_view(view, request);
2135 case REQ_SCROLL_LINE_DOWN:
2136 case REQ_SCROLL_LINE_UP:
2137 case REQ_SCROLL_PAGE_DOWN:
2138 case REQ_SCROLL_PAGE_UP:
2139 scroll_view(view, request);
2144 report("No file chosen, press 't' to open tree view");
2153 case REQ_VIEW_PAGER:
2154 open_view(view, request, OPEN_DEFAULT);
2159 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2161 if ((view == VIEW(REQ_VIEW_DIFF) &&
2162 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2163 (view == VIEW(REQ_VIEW_BLOB) &&
2164 view->parent == VIEW(REQ_VIEW_TREE))) {
2165 view = view->parent;
2166 move_view(view, request);
2167 if (view_is_displayed(view))
2168 update_view_title(view);
2170 move_view(view, request);
2177 report("Nothing to enter");
2180 return view->ops->enter(view, &view->line[view->lineno]);
2184 int nviews = displayed_views();
2185 int next_view = (current_view + 1) % nviews;
2187 if (next_view == current_view) {
2188 report("Only one view is displayed");
2192 current_view = next_view;
2193 /* Blur out the title of the previous view. */
2194 update_view_title(view);
2198 case REQ_TOGGLE_LINENO:
2199 opt_line_number = !opt_line_number;
2203 case REQ_TOGGLE_REV_GRAPH:
2204 opt_rev_graph = !opt_rev_graph;
2209 /* Always reload^Wrerun commands from the prompt. */
2210 open_view(view, opt_request, OPEN_RELOAD);
2214 case REQ_SEARCH_BACK:
2215 search_view(view, request);
2220 find_next(view, request);
2223 case REQ_STOP_LOADING:
2224 for (i = 0; i < ARRAY_SIZE(views); i++) {
2227 report("Stopped loading the %s view", view->name),
2232 case REQ_SHOW_VERSION:
2233 report("%s (built %s)", VERSION, __DATE__);
2236 case REQ_SCREEN_RESIZE:
2239 case REQ_SCREEN_REDRAW:
2247 case REQ_VIEW_CLOSE:
2248 /* XXX: Mark closed views by letting view->parent point to the
2249 * view itself. Parents to closed view should never be
2252 view->parent->parent != view->parent) {
2253 memset(display, 0, sizeof(display));
2255 display[current_view] = view->parent;
2256 view->parent = view;
2266 /* An unknown key will show most commonly used commands. */
2267 report("Unknown key, press 'h' for help");
2280 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2282 char *text = line->data;
2283 enum line_type type = line->type;
2284 int textlen = strlen(text);
2287 wmove(view->win, lineno, 0);
2291 wchgat(view->win, -1, 0, type, NULL);
2294 attr = get_line_attr(type);
2295 wattrset(view->win, attr);
2297 if (opt_line_number || opt_tab_size < TABSIZE) {
2298 static char spaces[] = " ";
2299 int col_offset = 0, col = 0;
2301 if (opt_line_number) {
2302 unsigned long real_lineno = view->offset + lineno + 1;
2304 if (real_lineno == 1 ||
2305 (real_lineno % opt_num_interval) == 0) {
2306 wprintw(view->win, "%.*d", view->digits, real_lineno);
2309 waddnstr(view->win, spaces,
2310 MIN(view->digits, STRING_SIZE(spaces)));
2312 waddstr(view->win, ": ");
2313 col_offset = view->digits + 2;
2316 while (text && col_offset + col < view->width) {
2317 int cols_max = view->width - col_offset - col;
2321 if (*text == '\t') {
2323 assert(sizeof(spaces) > TABSIZE);
2325 cols = opt_tab_size - (col % opt_tab_size);
2328 text = strchr(text, '\t');
2329 cols = line ? text - pos : strlen(pos);
2332 waddnstr(view->win, pos, MIN(cols, cols_max));
2337 int col = 0, pos = 0;
2339 for (; pos < textlen && col < view->width; pos++, col++)
2340 if (text[pos] == '\t')
2341 col += TABSIZE - (col % TABSIZE) - 1;
2343 waddnstr(view->win, text, pos);
2350 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2352 char refbuf[SIZEOF_STR];
2356 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2359 pipe = popen(refbuf, "r");
2363 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2364 ref = chomp_string(ref);
2370 /* This is the only fatal call, since it can "corrupt" the buffer. */
2371 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2378 add_pager_refs(struct view *view, struct line *line)
2380 char buf[SIZEOF_STR];
2381 char *commit_id = line->data + STRING_SIZE("commit ");
2383 size_t bufpos = 0, refpos = 0;
2384 const char *sep = "Refs: ";
2385 bool is_tag = FALSE;
2387 assert(line->type == LINE_COMMIT);
2389 refs = get_refs(commit_id);
2391 if (view == VIEW(REQ_VIEW_DIFF))
2392 goto try_add_describe_ref;
2397 struct ref *ref = refs[refpos];
2398 char *fmt = ref->tag ? "%s[%s]" :
2399 ref->remote ? "%s<%s>" : "%s%s";
2401 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2406 } while (refs[refpos++]->next);
2408 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2409 try_add_describe_ref:
2410 /* Add <tag>-g<commit_id> "fake" reference. */
2411 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2418 if (!realloc_lines(view, view->line_size + 1))
2421 add_line_text(view, buf, LINE_PP_REFS);
2425 pager_read(struct view *view, char *data)
2432 line = add_line_text(view, data, get_line_type(data));
2436 if (line->type == LINE_COMMIT &&
2437 (view == VIEW(REQ_VIEW_DIFF) ||
2438 view == VIEW(REQ_VIEW_LOG)))
2439 add_pager_refs(view, line);
2445 pager_enter(struct view *view, struct line *line)
2449 if (line->type == LINE_COMMIT &&
2450 (view == VIEW(REQ_VIEW_LOG) ||
2451 view == VIEW(REQ_VIEW_PAGER))) {
2452 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2456 /* Always scroll the view even if it was split. That way
2457 * you can use Enter to scroll through the log view and
2458 * split open each commit diff. */
2459 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2461 /* FIXME: A minor workaround. Scrolling the view will call report("")
2462 * but if we are scrolling a non-current view this won't properly
2463 * update the view title. */
2465 update_view_title(view);
2471 pager_grep(struct view *view, struct line *line)
2474 char *text = line->data;
2479 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2486 pager_select(struct view *view, struct line *line)
2488 if (line->type == LINE_COMMIT) {
2489 char *text = line->data;
2491 string_copy(view->ref, text + STRING_SIZE("commit "));
2492 string_copy(ref_commit, view->ref);
2496 static struct view_ops pager_ops = {
2510 /* Parse output from git-ls-tree(1):
2512 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2513 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2514 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2515 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2518 #define SIZEOF_TREE_ATTR \
2519 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2521 #define TREE_UP_FORMAT "040000 tree %s\t.."
2524 tree_compare_entry(enum line_type type1, char *name1,
2525 enum line_type type2, char *name2)
2527 if (type1 != type2) {
2528 if (type1 == LINE_TREE_DIR)
2533 return strcmp(name1, name2);
2537 tree_read(struct view *view, char *text)
2539 size_t textlen = text ? strlen(text) : 0;
2540 char buf[SIZEOF_STR];
2542 enum line_type type;
2543 bool first_read = view->lines == 0;
2545 if (textlen <= SIZEOF_TREE_ATTR)
2548 type = text[STRING_SIZE("100644 ")] == 't'
2549 ? LINE_TREE_DIR : LINE_TREE_FILE;
2552 /* Add path info line */
2553 if (!string_format(buf, "Directory path /%s", opt_path) ||
2554 !realloc_lines(view, view->line_size + 1) ||
2555 !add_line_text(view, buf, LINE_DEFAULT))
2558 /* Insert "link" to parent directory. */
2560 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2561 !realloc_lines(view, view->line_size + 1) ||
2562 !add_line_text(view, buf, LINE_TREE_DIR))
2567 /* Strip the path part ... */
2569 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2570 size_t striplen = strlen(opt_path);
2571 char *path = text + SIZEOF_TREE_ATTR;
2573 if (pathlen > striplen)
2574 memmove(path, path + striplen,
2575 pathlen - striplen + 1);
2578 /* Skip "Directory ..." and ".." line. */
2579 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2580 struct line *line = &view->line[pos];
2581 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2582 char *path2 = text + SIZEOF_TREE_ATTR;
2583 int cmp = tree_compare_entry(line->type, path1, type, path2);
2588 text = strdup(text);
2592 if (view->lines > pos)
2593 memmove(&view->line[pos + 1], &view->line[pos],
2594 (view->lines - pos) * sizeof(*line));
2596 line = &view->line[pos];
2603 if (!add_line_text(view, text, type))
2606 /* Move the current line to the first tree entry. */
2614 tree_enter(struct view *view, struct line *line)
2616 enum open_flags flags;
2617 enum request request;
2619 switch (line->type) {
2621 /* Depending on whether it is a subdir or parent (updir?) link
2622 * mangle the path buffer. */
2623 if (line == &view->line[1] && *opt_path) {
2624 size_t path_len = strlen(opt_path);
2625 char *dirsep = opt_path + path_len - 1;
2627 while (dirsep > opt_path && dirsep[-1] != '/')
2633 size_t pathlen = strlen(opt_path);
2634 size_t origlen = pathlen;
2635 char *data = line->data;
2636 char *basename = data + SIZEOF_TREE_ATTR;
2638 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2639 opt_path[origlen] = 0;
2644 /* Trees and subtrees share the same ID, so they are not not
2645 * unique like blobs. */
2646 flags = OPEN_RELOAD;
2647 request = REQ_VIEW_TREE;
2650 case LINE_TREE_FILE:
2651 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2652 request = REQ_VIEW_BLOB;
2659 open_view(view, request, flags);
2665 tree_select(struct view *view, struct line *line)
2667 char *text = line->data;
2669 text += STRING_SIZE("100644 blob ");
2671 if (line->type == LINE_TREE_FILE) {
2672 string_ncopy(ref_blob, text, 40);
2673 /* Also update the blob view's ref, since all there must always
2675 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2677 } else if (line->type != LINE_TREE_DIR) {
2681 string_ncopy(view->ref, text, 40);
2684 static struct view_ops tree_ops = {
2694 blob_read(struct view *view, char *line)
2696 return add_line_text(view, line, LINE_DEFAULT);
2699 static struct view_ops blob_ops = {
2714 char id[SIZEOF_REV]; /* SHA1 ID. */
2715 char title[128]; /* First line of the commit message. */
2716 char author[75]; /* Author of the commit. */
2717 struct tm time; /* Date from the author ident. */
2718 struct ref **refs; /* Repository references. */
2719 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2720 size_t graph_size; /* The width of the graph array. */
2723 /* Size of rev graph with no "padding" columns */
2724 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2727 struct rev_graph *prev, *next, *parents;
2728 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2730 struct commit *commit;
2734 /* Parents of the commit being visualized. */
2735 static struct rev_graph graph_parents[4];
2737 /* The current stack of revisions on the graph. */
2738 static struct rev_graph graph_stacks[4] = {
2739 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
2740 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2741 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
2742 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
2746 graph_parent_is_merge(struct rev_graph *graph)
2748 return graph->parents->size > 1;
2752 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
2754 struct commit *commit = graph->commit;
2756 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
2757 commit->graph[commit->graph_size++] = symbol;
2761 done_rev_graph(struct rev_graph *graph)
2763 if (graph_parent_is_merge(graph) &&
2764 graph->pos < graph->size - 1 &&
2765 graph->next->size == graph->size + graph->parents->size - 1) {
2766 size_t i = graph->pos + graph->parents->size - 1;
2768 graph->commit->graph_size = i * 2;
2769 while (i < graph->next->size - 1) {
2770 append_to_rev_graph(graph, ' ');
2771 append_to_rev_graph(graph, '\\');
2776 graph->size = graph->pos = 0;
2777 graph->commit = NULL;
2778 memset(graph->parents, 0, sizeof(*graph->parents));
2782 push_rev_graph(struct rev_graph *graph, char *parent)
2786 /* "Collapse" duplicate parents lines.
2788 * FIXME: This needs to also update update the drawn graph but
2789 * for now it just serves as a method for pruning graph lines. */
2790 for (i = 0; i < graph->size; i++)
2791 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
2794 if (graph->size < SIZEOF_REVITEMS) {
2795 string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV);
2800 get_rev_graph_symbol(struct rev_graph *graph)
2804 if (graph->parents->size == 0)
2805 symbol = REVGRAPH_INIT;
2806 else if (graph_parent_is_merge(graph))
2807 symbol = REVGRAPH_MERGE;
2808 else if (graph->pos >= graph->size)
2809 symbol = REVGRAPH_BRANCH;
2811 symbol = REVGRAPH_COMMIT;
2817 draw_rev_graph(struct rev_graph *graph)
2820 chtype separator, line;
2822 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
2823 static struct rev_filler fillers[] = {
2824 { ' ', REVGRAPH_LINE },
2829 chtype symbol = get_rev_graph_symbol(graph);
2830 struct rev_filler *filler;
2833 filler = &fillers[DEFAULT];
2835 for (i = 0; i < graph->pos; i++) {
2836 append_to_rev_graph(graph, filler->line);
2837 if (graph_parent_is_merge(graph->prev) &&
2838 graph->prev->pos == i)
2839 filler = &fillers[RSHARP];
2841 append_to_rev_graph(graph, filler->separator);
2844 /* Place the symbol for this revision. */
2845 append_to_rev_graph(graph, symbol);
2847 if (graph->prev->size > graph->size)
2848 filler = &fillers[RDIAG];
2850 filler = &fillers[DEFAULT];
2854 for (; i < graph->size; i++) {
2855 append_to_rev_graph(graph, filler->separator);
2856 append_to_rev_graph(graph, filler->line);
2857 if (graph_parent_is_merge(graph->prev) &&
2858 i < graph->prev->pos + graph->parents->size)
2859 filler = &fillers[RSHARP];
2860 if (graph->prev->size > graph->size)
2861 filler = &fillers[LDIAG];
2864 if (graph->prev->size > graph->size) {
2865 append_to_rev_graph(graph, filler->separator);
2866 if (filler->line != ' ')
2867 append_to_rev_graph(graph, filler->line);
2871 /* Prepare the next rev graph */
2873 prepare_rev_graph(struct rev_graph *graph)
2877 /* First, traverse all lines of revisions up to the active one. */
2878 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2879 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2882 push_rev_graph(graph->next, graph->rev[graph->pos]);
2885 /* Interleave the new revision parent(s). */
2886 for (i = 0; i < graph->parents->size; i++)
2887 push_rev_graph(graph->next, graph->parents->rev[i]);
2889 /* Lastly, put any remaining revisions. */
2890 for (i = graph->pos + 1; i < graph->size; i++)
2891 push_rev_graph(graph->next, graph->rev[i]);
2895 update_rev_graph(struct rev_graph *graph)
2897 /* If this is the finalizing update ... */
2899 prepare_rev_graph(graph);
2901 /* Graph visualization needs a one rev look-ahead,
2902 * so the first update doesn't visualize anything. */
2903 if (!graph->prev->commit)
2906 draw_rev_graph(graph->prev);
2907 done_rev_graph(graph->prev->prev);
2916 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2918 char buf[DATE_COLS + 1];
2919 struct commit *commit = line->data;
2920 enum line_type type;
2926 if (!*commit->author)
2929 wmove(view->win, lineno, col);
2933 wattrset(view->win, get_line_attr(type));
2934 wchgat(view->win, -1, 0, type, NULL);
2937 type = LINE_MAIN_COMMIT;
2938 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2941 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2942 waddnstr(view->win, buf, timelen);
2943 waddstr(view->win, " ");
2946 wmove(view->win, lineno, col);
2947 if (type != LINE_CURSOR)
2948 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2951 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2953 authorlen = strlen(commit->author);
2954 if (authorlen > AUTHOR_COLS - 2) {
2955 authorlen = AUTHOR_COLS - 2;
2961 waddnstr(view->win, commit->author, authorlen);
2962 if (type != LINE_CURSOR)
2963 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2964 waddch(view->win, '~');
2966 waddstr(view->win, commit->author);
2970 if (type != LINE_CURSOR)
2971 wattrset(view->win, A_NORMAL);
2973 if (opt_rev_graph && commit->graph_size) {
2976 wmove(view->win, lineno, col);
2977 /* Using waddch() instead of waddnstr() ensures that
2978 * they'll be rendered correctly for the cursor line. */
2979 for (i = 0; i < commit->graph_size; i++)
2980 waddch(view->win, commit->graph[i]);
2982 waddch(view->win, ' ');
2983 col += commit->graph_size + 1;
2986 wmove(view->win, lineno, col);
2992 if (type == LINE_CURSOR)
2994 else if (commit->refs[i]->tag)
2995 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2996 else if (commit->refs[i]->remote)
2997 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
2999 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3000 waddstr(view->win, "[");
3001 waddstr(view->win, commit->refs[i]->name);
3002 waddstr(view->win, "]");
3003 if (type != LINE_CURSOR)
3004 wattrset(view->win, A_NORMAL);
3005 waddstr(view->win, " ");
3006 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3007 } while (commit->refs[i++]->next);
3010 if (type != LINE_CURSOR)
3011 wattrset(view->win, get_line_attr(type));
3014 int titlelen = strlen(commit->title);
3016 if (col + titlelen > view->width)
3017 titlelen = view->width - col;
3019 waddnstr(view->win, commit->title, titlelen);
3025 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3027 main_read(struct view *view, char *line)
3029 static struct rev_graph *graph = graph_stacks;
3030 enum line_type type;
3031 struct commit *commit = view->lines
3032 ? view->line[view->lines - 1].data : NULL;
3035 update_rev_graph(graph);
3039 type = get_line_type(line);
3043 commit = calloc(1, sizeof(struct commit));
3047 line += STRING_SIZE("commit ");
3049 view->line[view->lines++].data = commit;
3050 string_copy(commit->id, line);
3051 commit->refs = get_refs(commit->id);
3052 graph->commit = commit;
3057 line += STRING_SIZE("parent ");
3058 push_rev_graph(graph->parents, line);
3064 /* Parse author lines where the name may be empty:
3065 * author <email@address.tld> 1138474660 +0100
3067 char *ident = line + STRING_SIZE("author ");
3068 char *nameend = strchr(ident, '<');
3069 char *emailend = strchr(ident, '>');
3071 if (!commit || !nameend || !emailend)
3074 update_rev_graph(graph);
3075 graph = graph->next;
3077 *nameend = *emailend = 0;
3078 ident = chomp_string(ident);
3080 ident = chomp_string(nameend + 1);
3085 string_copy(commit->author, ident);
3087 /* Parse epoch and timezone */
3088 if (emailend[1] == ' ') {
3089 char *secs = emailend + 2;
3090 char *zone = strchr(secs, ' ');
3091 time_t time = (time_t) atol(secs);
3093 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3097 tz = ('0' - zone[1]) * 60 * 60 * 10;
3098 tz += ('0' - zone[2]) * 60 * 60;
3099 tz += ('0' - zone[3]) * 60;
3100 tz += ('0' - zone[4]) * 60;
3108 gmtime_r(&time, &commit->time);
3116 /* Fill in the commit title if it has not already been set. */
3117 if (commit->title[0])
3120 /* Require titles to start with a non-space character at the
3121 * offset used by git log. */
3122 if (strncmp(line, " ", 4))
3125 /* Well, if the title starts with a whitespace character,
3126 * try to be forgiving. Otherwise we end up with no title. */
3127 while (isspace(*line))
3131 /* FIXME: More graceful handling of titles; append "..." to
3132 * shortened titles, etc. */
3134 string_copy(commit->title, line);
3141 main_enter(struct view *view, struct line *line)
3143 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3145 open_view(view, REQ_VIEW_DIFF, flags);
3150 main_grep(struct view *view, struct line *line)
3152 struct commit *commit = line->data;
3153 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3154 char buf[DATE_COLS + 1];
3157 for (state = S_TITLE; state < S_END; state++) {
3161 case S_TITLE: text = commit->title; break;
3162 case S_AUTHOR: text = commit->author; break;
3164 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3173 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3181 main_select(struct view *view, struct line *line)
3183 struct commit *commit = line->data;
3185 string_copy(view->ref, commit->id);
3186 string_copy(ref_commit, view->ref);
3189 static struct view_ops main_ops = {
3200 * Unicode / UTF-8 handling
3202 * NOTE: Much of the following code for dealing with unicode is derived from
3203 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3204 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3207 /* I've (over)annotated a lot of code snippets because I am not entirely
3208 * confident that the approach taken by this small UTF-8 interface is correct.
3212 unicode_width(unsigned long c)
3215 (c <= 0x115f /* Hangul Jamo */
3218 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3220 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3221 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3222 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3223 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3224 || (c >= 0xffe0 && c <= 0xffe6)
3225 || (c >= 0x20000 && c <= 0x2fffd)
3226 || (c >= 0x30000 && c <= 0x3fffd)))
3232 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3233 * Illegal bytes are set one. */
3234 static const unsigned char utf8_bytes[256] = {
3235 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,
3236 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,
3237 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,
3238 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,
3239 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,
3240 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,
3241 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,
3242 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,
3245 /* Decode UTF-8 multi-byte representation into a unicode character. */
3246 static inline unsigned long
3247 utf8_to_unicode(const char *string, size_t length)
3249 unsigned long unicode;
3253 unicode = string[0];
3256 unicode = (string[0] & 0x1f) << 6;
3257 unicode += (string[1] & 0x3f);
3260 unicode = (string[0] & 0x0f) << 12;
3261 unicode += ((string[1] & 0x3f) << 6);
3262 unicode += (string[2] & 0x3f);
3265 unicode = (string[0] & 0x0f) << 18;
3266 unicode += ((string[1] & 0x3f) << 12);
3267 unicode += ((string[2] & 0x3f) << 6);
3268 unicode += (string[3] & 0x3f);
3271 unicode = (string[0] & 0x0f) << 24;
3272 unicode += ((string[1] & 0x3f) << 18);
3273 unicode += ((string[2] & 0x3f) << 12);
3274 unicode += ((string[3] & 0x3f) << 6);
3275 unicode += (string[4] & 0x3f);
3278 unicode = (string[0] & 0x01) << 30;
3279 unicode += ((string[1] & 0x3f) << 24);
3280 unicode += ((string[2] & 0x3f) << 18);
3281 unicode += ((string[3] & 0x3f) << 12);
3282 unicode += ((string[4] & 0x3f) << 6);
3283 unicode += (string[5] & 0x3f);
3286 die("Invalid unicode length");
3289 /* Invalid characters could return the special 0xfffd value but NUL
3290 * should be just as good. */
3291 return unicode > 0xffff ? 0 : unicode;
3294 /* Calculates how much of string can be shown within the given maximum width
3295 * and sets trimmed parameter to non-zero value if all of string could not be
3298 * Additionally, adds to coloffset how many many columns to move to align with
3299 * the expected position. Takes into account how multi-byte and double-width
3300 * characters will effect the cursor position.
3302 * Returns the number of bytes to output from string to satisfy max_width. */
3304 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3306 const char *start = string;
3307 const char *end = strchr(string, '\0');
3313 while (string < end) {
3314 int c = *(unsigned char *) string;
3315 unsigned char bytes = utf8_bytes[c];
3317 unsigned long unicode;
3319 if (string + bytes > end)
3322 /* Change representation to figure out whether
3323 * it is a single- or double-width character. */
3325 unicode = utf8_to_unicode(string, bytes);
3326 /* FIXME: Graceful handling of invalid unicode character. */
3330 ucwidth = unicode_width(unicode);
3332 if (width > max_width) {
3337 /* The column offset collects the differences between the
3338 * number of bytes encoding a character and the number of
3339 * columns will be used for rendering said character.
3341 * So if some character A is encoded in 2 bytes, but will be
3342 * represented on the screen using only 1 byte this will and up
3343 * adding 1 to the multi-byte column offset.
3345 * Assumes that no double-width character can be encoding in
3346 * less than two bytes. */
3347 if (bytes > ucwidth)
3348 mbwidth += bytes - ucwidth;
3353 *coloffset += mbwidth;
3355 return string - start;
3363 /* Whether or not the curses interface has been initialized. */
3364 static bool cursed = FALSE;
3366 /* The status window is used for polling keystrokes. */
3367 static WINDOW *status_win;
3369 static bool status_empty = TRUE;
3371 /* Update status and title window. */
3373 report(const char *msg, ...)
3375 struct view *view = display[current_view];
3380 if (!status_empty || *msg) {
3383 va_start(args, msg);
3385 wmove(status_win, 0, 0);
3387 vwprintw(status_win, msg, args);
3388 status_empty = FALSE;
3390 status_empty = TRUE;
3392 wclrtoeol(status_win);
3393 wrefresh(status_win);
3398 update_view_title(view);
3399 update_display_cursor(view);
3402 /* Controls when nodelay should be in effect when polling user input. */
3404 set_nonblocking_input(bool loading)
3406 static unsigned int loading_views;
3408 if ((loading == FALSE && loading_views-- == 1) ||
3409 (loading == TRUE && loading_views++ == 0))
3410 nodelay(status_win, loading);
3418 /* Initialize the curses library */
3419 if (isatty(STDIN_FILENO)) {
3420 cursed = !!initscr();
3422 /* Leave stdin and stdout alone when acting as a pager. */
3423 FILE *io = fopen("/dev/tty", "r+");
3426 die("Failed to open /dev/tty");
3427 cursed = !!newterm(NULL, io, io);
3431 die("Failed to initialize curses");
3433 nonl(); /* Tell curses not to do NL->CR/NL on output */
3434 cbreak(); /* Take input chars one at a time, no wait for \n */
3435 noecho(); /* Don't echo input */
3436 leaveok(stdscr, TRUE);
3441 getmaxyx(stdscr, y, x);
3442 status_win = newwin(1, 0, y - 1, 0);
3444 die("Failed to create status window");
3446 /* Enable keyboard mapping */
3447 keypad(status_win, TRUE);
3448 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3452 read_prompt(const char *prompt)
3454 enum { READING, STOP, CANCEL } status = READING;
3455 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3458 while (status == READING) {
3464 foreach_view (view, i)
3469 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3470 wclrtoeol(status_win);
3472 /* Refresh, accept single keystroke of input */
3473 key = wgetch(status_win);
3478 status = pos ? STOP : CANCEL;
3496 if (pos >= sizeof(buf)) {
3497 report("Input string too long");
3502 buf[pos++] = (char) key;
3506 /* Clear the status window */
3507 status_empty = FALSE;
3510 if (status == CANCEL)
3519 * Repository references
3522 static struct ref *refs;
3523 static size_t refs_size;
3525 /* Id <-> ref store */
3526 static struct ref ***id_refs;
3527 static size_t id_refs_size;
3529 static struct ref **
3532 struct ref ***tmp_id_refs;
3533 struct ref **ref_list = NULL;
3534 size_t ref_list_size = 0;
3537 for (i = 0; i < id_refs_size; i++)
3538 if (!strcmp(id, id_refs[i][0]->id))
3541 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3545 id_refs = tmp_id_refs;
3547 for (i = 0; i < refs_size; i++) {
3550 if (strcmp(id, refs[i].id))
3553 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3561 if (ref_list_size > 0)
3562 ref_list[ref_list_size - 1]->next = 1;
3563 ref_list[ref_list_size] = &refs[i];
3565 /* XXX: The properties of the commit chains ensures that we can
3566 * safely modify the shared ref. The repo references will
3567 * always be similar for the same id. */
3568 ref_list[ref_list_size]->next = 0;
3573 id_refs[id_refs_size++] = ref_list;
3579 read_ref(char *id, int idlen, char *name, int namelen)
3583 bool remote = FALSE;
3585 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3586 /* Commits referenced by tags has "^{}" appended. */
3587 if (name[namelen - 1] != '}')
3590 while (namelen > 0 && name[namelen] != '^')
3594 namelen -= STRING_SIZE("refs/tags/");
3595 name += STRING_SIZE("refs/tags/");
3597 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
3599 namelen -= STRING_SIZE("refs/remotes/");
3600 name += STRING_SIZE("refs/remotes/");
3602 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3603 namelen -= STRING_SIZE("refs/heads/");
3604 name += STRING_SIZE("refs/heads/");
3606 } else if (!strcmp(name, "HEAD")) {
3610 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3614 ref = &refs[refs_size++];
3615 ref->name = malloc(namelen + 1);
3619 strncpy(ref->name, name, namelen);
3620 ref->name[namelen] = 0;
3622 ref->remote = remote;
3623 string_copy(ref->id, id);
3631 const char *cmd_env = getenv("TIG_LS_REMOTE");
3632 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3634 return read_properties(popen(cmd, "r"), "\t", read_ref);
3638 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3640 if (!strcmp(name, "i18n.commitencoding"))
3641 string_copy(opt_encoding, value);
3647 load_repo_config(void)
3649 return read_properties(popen("git repo-config --list", "r"),
3650 "=", read_repo_config_option);
3654 read_properties(FILE *pipe, const char *separators,
3655 int (*read_property)(char *, int, char *, int))
3657 char buffer[BUFSIZ];
3664 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3669 name = chomp_string(name);
3670 namelen = strcspn(name, separators);
3672 if (name[namelen]) {
3674 value = chomp_string(name + namelen + 1);
3675 valuelen = strlen(value);
3682 state = read_property(name, namelen, value, valuelen);
3685 if (state != ERR && ferror(pipe))
3698 static void __NORETURN
3701 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3707 static void __NORETURN
3708 die(const char *err, ...)
3714 va_start(args, err);
3715 fputs("tig: ", stderr);
3716 vfprintf(stderr, err, args);
3717 fputs("\n", stderr);
3724 main(int argc, char *argv[])
3727 enum request request;
3730 signal(SIGINT, quit);
3732 if (setlocale(LC_ALL, "")) {
3733 string_copy(opt_codeset, nl_langinfo(CODESET));
3736 if (load_options() == ERR)
3737 die("Failed to load user config.");
3739 /* Load the repo config file so options can be overwritten from
3740 * the command line. */
3741 if (load_repo_config() == ERR)
3742 die("Failed to load repo config.");
3744 if (!parse_options(argc, argv))
3747 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3748 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3749 if (opt_iconv == ICONV_NONE)
3750 die("Failed to initialize character set conversion");
3753 if (load_refs() == ERR)
3754 die("Failed to load refs.");
3756 /* Require a git repository unless when running in pager mode. */
3757 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3758 die("Not a git repository");
3760 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3761 view->cmd_env = getenv(view->cmd_env);
3763 request = opt_request;
3767 while (view_driver(display[current_view], request)) {
3771 foreach_view (view, i)
3774 /* Refresh, accept single keystroke of input */
3775 key = wgetch(status_win);
3777 /* wgetch() with nodelay() enabled returns ERR when there's no
3784 request = get_keybinding(display[current_view]->keymap, key);
3786 /* Some low-level request handling. This keeps access to
3787 * status_win restricted. */
3791 char *cmd = read_prompt(":");
3793 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3794 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3795 opt_request = REQ_VIEW_DIFF;
3797 opt_request = REQ_VIEW_PAGER;
3806 case REQ_SEARCH_BACK:
3808 const char *prompt = request == REQ_SEARCH
3810 char *search = read_prompt(prompt);
3813 string_copy(opt_search, search);
3818 case REQ_SCREEN_RESIZE:
3822 getmaxyx(stdscr, height, width);
3824 /* Resize the status view and let the view driver take
3825 * care of resizing the displayed views. */
3826 wresize(status_win, 1, width);
3827 mvwin(status_win, height - 1, 0);
3828 wrefresh(status_win);