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, ""),
1265 VIEW_(PAGER, "pager", &pager_ops, ""),
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, initially show the
1787 * command in the title. However, it maybe later be
1788 * overwritten if a commit line is selected. */
1789 string_copy(view->ref, view->cmd);
1791 } else if (view == VIEW(REQ_VIEW_TREE)) {
1792 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1793 char path[SIZEOF_STR];
1795 if (strcmp(view->vid, view->id))
1796 opt_path[0] = path[0] = 0;
1797 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
1800 if (!string_format(view->cmd, format, id, path))
1804 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1806 if (!string_format(view->cmd, format, id, id, id, id, id))
1809 /* Put the current ref_* value to the view title ref
1810 * member. This is needed by the blob view. Most other
1811 * views sets it automatically after loading because the
1812 * first line is a commit line. */
1813 string_copy(view->ref, id);
1816 /* Special case for the pager view. */
1818 view->pipe = opt_pipe;
1821 view->pipe = popen(view->cmd, "r");
1827 set_nonblocking_input(TRUE);
1832 string_copy(view->vid, id);
1837 for (i = 0; i < view->lines; i++)
1838 if (view->line[i].data)
1839 free(view->line[i].data);
1845 view->start_time = time(NULL);
1850 static struct line *
1851 realloc_lines(struct view *view, size_t line_size)
1853 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1859 view->line_size = line_size;
1864 update_view(struct view *view)
1866 char in_buffer[BUFSIZ];
1867 char out_buffer[BUFSIZ * 2];
1869 /* The number of lines to read. If too low it will cause too much
1870 * redrawing (and possible flickering), if too high responsiveness
1872 unsigned long lines = view->height;
1873 int redraw_from = -1;
1878 /* Only redraw if lines are visible. */
1879 if (view->offset + view->height >= view->lines)
1880 redraw_from = view->lines - view->offset;
1882 /* FIXME: This is probably not perfect for backgrounded views. */
1883 if (!realloc_lines(view, view->lines + lines))
1886 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1887 size_t linelen = strlen(line);
1890 line[linelen - 1] = 0;
1892 if (opt_iconv != ICONV_NONE) {
1894 size_t inlen = linelen;
1896 char *outbuf = out_buffer;
1897 size_t outlen = sizeof(out_buffer);
1901 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1902 if (ret != (size_t) -1) {
1904 linelen = strlen(out_buffer);
1908 if (!view->ops->read(view, line))
1918 lines = view->lines;
1919 for (digits = 0; lines; digits++)
1922 /* Keep the displayed view in sync with line number scaling. */
1923 if (digits != view->digits) {
1924 view->digits = digits;
1929 if (!view_is_displayed(view))
1932 if (view == VIEW(REQ_VIEW_TREE)) {
1933 /* Clear the view and redraw everything since the tree sorting
1934 * might have rearranged things. */
1937 } else if (redraw_from >= 0) {
1938 /* If this is an incremental update, redraw the previous line
1939 * since for commits some members could have changed when
1940 * loading the main view. */
1941 if (redraw_from > 0)
1944 /* Since revision graph visualization requires knowledge
1945 * about the parent commit, it causes a further one-off
1946 * needed to be redrawn for incremental updates. */
1947 if (redraw_from > 0 && opt_rev_graph)
1950 /* Incrementally draw avoids flickering. */
1951 redraw_view_from(view, redraw_from);
1954 /* Update the title _after_ the redraw so that if the redraw picks up a
1955 * commit reference in view->ref it'll be available here. */
1956 update_view_title(view);
1959 if (ferror(view->pipe)) {
1960 report("Failed to read: %s", strerror(errno));
1963 } else if (feof(view->pipe)) {
1971 report("Allocation failure");
1974 view->ops->read(view, NULL);
1979 static struct line *
1980 add_line_text(struct view *view, char *data, enum line_type type)
1982 struct line *line = &view->line[view->lines];
1987 line->data = strdup(data);
2002 static void open_help_view(struct view *view)
2005 int lines = ARRAY_SIZE(req_info) + 2;
2008 if (view->lines > 0)
2011 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2012 if (!req_info[i].request)
2015 view->line = calloc(lines, sizeof(*view->line));
2017 report("Allocation failure");
2021 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2023 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2026 if (!req_info[i].request) {
2027 add_line_text(view, "", LINE_DEFAULT);
2028 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2032 key = get_key(req_info[i].request);
2033 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
2036 add_line_text(view, buf, LINE_DEFAULT);
2041 OPEN_DEFAULT = 0, /* Use default view switching. */
2042 OPEN_SPLIT = 1, /* Split current view. */
2043 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2044 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2048 open_view(struct view *prev, enum request request, enum open_flags flags)
2050 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2051 bool split = !!(flags & OPEN_SPLIT);
2052 bool reload = !!(flags & OPEN_RELOAD);
2053 struct view *view = VIEW(request);
2054 int nviews = displayed_views();
2055 struct view *base_view = display[0];
2057 if (view == prev && nviews == 1 && !reload) {
2058 report("Already in %s view", view->name);
2062 if (view == VIEW(REQ_VIEW_HELP)) {
2063 open_help_view(view);
2065 } else if ((reload || strcmp(view->vid, view->id)) &&
2066 !begin_update(view)) {
2067 report("Failed to load %s view", view->name);
2076 /* Maximize the current view. */
2077 memset(display, 0, sizeof(display));
2079 display[current_view] = view;
2082 /* Resize the view when switching between split- and full-screen,
2083 * or when switching between two different full-screen views. */
2084 if (nviews != displayed_views() ||
2085 (nviews == 1 && base_view != display[0]))
2088 if (split && prev->lineno - prev->offset >= prev->height) {
2089 /* Take the title line into account. */
2090 int lines = prev->lineno - prev->offset - prev->height + 1;
2092 /* Scroll the view that was split if the current line is
2093 * outside the new limited view. */
2094 do_scroll_view(prev, lines);
2097 if (prev && view != prev) {
2098 if (split && !backgrounded) {
2099 /* "Blur" the previous view. */
2100 update_view_title(prev);
2103 view->parent = prev;
2106 if (view->pipe && view->lines == 0) {
2107 /* Clear the old view and let the incremental updating refill
2116 /* If the view is backgrounded the above calls to report()
2117 * won't redraw the view title. */
2119 update_view_title(view);
2124 * User request switch noodle
2128 view_driver(struct view *view, enum request request)
2135 case REQ_MOVE_PAGE_UP:
2136 case REQ_MOVE_PAGE_DOWN:
2137 case REQ_MOVE_FIRST_LINE:
2138 case REQ_MOVE_LAST_LINE:
2139 move_view(view, request);
2142 case REQ_SCROLL_LINE_DOWN:
2143 case REQ_SCROLL_LINE_UP:
2144 case REQ_SCROLL_PAGE_DOWN:
2145 case REQ_SCROLL_PAGE_UP:
2146 scroll_view(view, request);
2151 report("No file chosen, press %s to open tree view",
2152 get_key(REQ_VIEW_TREE));
2155 open_view(view, request, OPEN_DEFAULT);
2158 case REQ_VIEW_PAGER:
2159 if (!VIEW(REQ_VIEW_PAGER)->lines) {
2160 report("No pager content, press %s to run command from prompt",
2161 get_key(REQ_PROMPT));
2164 open_view(view, request, OPEN_DEFAULT);
2172 open_view(view, request, OPEN_DEFAULT);
2177 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2179 if ((view == VIEW(REQ_VIEW_DIFF) &&
2180 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2181 (view == VIEW(REQ_VIEW_BLOB) &&
2182 view->parent == VIEW(REQ_VIEW_TREE))) {
2183 view = view->parent;
2184 move_view(view, request);
2185 if (view_is_displayed(view))
2186 update_view_title(view);
2188 move_view(view, request);
2195 report("Nothing to enter");
2198 return view->ops->enter(view, &view->line[view->lineno]);
2202 int nviews = displayed_views();
2203 int next_view = (current_view + 1) % nviews;
2205 if (next_view == current_view) {
2206 report("Only one view is displayed");
2210 current_view = next_view;
2211 /* Blur out the title of the previous view. */
2212 update_view_title(view);
2216 case REQ_TOGGLE_LINENO:
2217 opt_line_number = !opt_line_number;
2221 case REQ_TOGGLE_REV_GRAPH:
2222 opt_rev_graph = !opt_rev_graph;
2227 /* Always reload^Wrerun commands from the prompt. */
2228 open_view(view, opt_request, OPEN_RELOAD);
2232 case REQ_SEARCH_BACK:
2233 search_view(view, request);
2238 find_next(view, request);
2241 case REQ_STOP_LOADING:
2242 for (i = 0; i < ARRAY_SIZE(views); i++) {
2245 report("Stopped loading the %s view", view->name),
2250 case REQ_SHOW_VERSION:
2251 report("%s (built %s)", VERSION, __DATE__);
2254 case REQ_SCREEN_RESIZE:
2257 case REQ_SCREEN_REDRAW:
2265 case REQ_VIEW_CLOSE:
2266 /* XXX: Mark closed views by letting view->parent point to the
2267 * view itself. Parents to closed view should never be
2270 view->parent->parent != view->parent) {
2271 memset(display, 0, sizeof(display));
2273 display[current_view] = view->parent;
2274 view->parent = view;
2284 /* An unknown key will show most commonly used commands. */
2285 report("Unknown key, press 'h' for help");
2298 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2300 char *text = line->data;
2301 enum line_type type = line->type;
2302 int textlen = strlen(text);
2305 wmove(view->win, lineno, 0);
2309 wchgat(view->win, -1, 0, type, NULL);
2312 attr = get_line_attr(type);
2313 wattrset(view->win, attr);
2315 if (opt_line_number || opt_tab_size < TABSIZE) {
2316 static char spaces[] = " ";
2317 int col_offset = 0, col = 0;
2319 if (opt_line_number) {
2320 unsigned long real_lineno = view->offset + lineno + 1;
2322 if (real_lineno == 1 ||
2323 (real_lineno % opt_num_interval) == 0) {
2324 wprintw(view->win, "%.*d", view->digits, real_lineno);
2327 waddnstr(view->win, spaces,
2328 MIN(view->digits, STRING_SIZE(spaces)));
2330 waddstr(view->win, ": ");
2331 col_offset = view->digits + 2;
2334 while (text && col_offset + col < view->width) {
2335 int cols_max = view->width - col_offset - col;
2339 if (*text == '\t') {
2341 assert(sizeof(spaces) > TABSIZE);
2343 cols = opt_tab_size - (col % opt_tab_size);
2346 text = strchr(text, '\t');
2347 cols = line ? text - pos : strlen(pos);
2350 waddnstr(view->win, pos, MIN(cols, cols_max));
2355 int col = 0, pos = 0;
2357 for (; pos < textlen && col < view->width; pos++, col++)
2358 if (text[pos] == '\t')
2359 col += TABSIZE - (col % TABSIZE) - 1;
2361 waddnstr(view->win, text, pos);
2368 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2370 char refbuf[SIZEOF_STR];
2374 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2377 pipe = popen(refbuf, "r");
2381 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2382 ref = chomp_string(ref);
2388 /* This is the only fatal call, since it can "corrupt" the buffer. */
2389 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2396 add_pager_refs(struct view *view, struct line *line)
2398 char buf[SIZEOF_STR];
2399 char *commit_id = line->data + STRING_SIZE("commit ");
2401 size_t bufpos = 0, refpos = 0;
2402 const char *sep = "Refs: ";
2403 bool is_tag = FALSE;
2405 assert(line->type == LINE_COMMIT);
2407 refs = get_refs(commit_id);
2409 if (view == VIEW(REQ_VIEW_DIFF))
2410 goto try_add_describe_ref;
2415 struct ref *ref = refs[refpos];
2416 char *fmt = ref->tag ? "%s[%s]" :
2417 ref->remote ? "%s<%s>" : "%s%s";
2419 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2424 } while (refs[refpos++]->next);
2426 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2427 try_add_describe_ref:
2428 /* Add <tag>-g<commit_id> "fake" reference. */
2429 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2436 if (!realloc_lines(view, view->line_size + 1))
2439 add_line_text(view, buf, LINE_PP_REFS);
2443 pager_read(struct view *view, char *data)
2450 line = add_line_text(view, data, get_line_type(data));
2454 if (line->type == LINE_COMMIT &&
2455 (view == VIEW(REQ_VIEW_DIFF) ||
2456 view == VIEW(REQ_VIEW_LOG)))
2457 add_pager_refs(view, line);
2463 pager_enter(struct view *view, struct line *line)
2467 if (line->type == LINE_COMMIT &&
2468 (view == VIEW(REQ_VIEW_LOG) ||
2469 view == VIEW(REQ_VIEW_PAGER))) {
2470 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2474 /* Always scroll the view even if it was split. That way
2475 * you can use Enter to scroll through the log view and
2476 * split open each commit diff. */
2477 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2479 /* FIXME: A minor workaround. Scrolling the view will call report("")
2480 * but if we are scrolling a non-current view this won't properly
2481 * update the view title. */
2483 update_view_title(view);
2489 pager_grep(struct view *view, struct line *line)
2492 char *text = line->data;
2497 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2504 pager_select(struct view *view, struct line *line)
2506 if (line->type == LINE_COMMIT) {
2507 char *text = line->data + STRING_SIZE("commit ");
2509 if (view != VIEW(REQ_VIEW_PAGER))
2510 string_copy(view->ref, text);
2511 string_copy(ref_commit, text);
2515 static struct view_ops pager_ops = {
2529 /* Parse output from git-ls-tree(1):
2531 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2532 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2533 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2534 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2537 #define SIZEOF_TREE_ATTR \
2538 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2540 #define TREE_UP_FORMAT "040000 tree %s\t.."
2543 tree_compare_entry(enum line_type type1, char *name1,
2544 enum line_type type2, char *name2)
2546 if (type1 != type2) {
2547 if (type1 == LINE_TREE_DIR)
2552 return strcmp(name1, name2);
2556 tree_read(struct view *view, char *text)
2558 size_t textlen = text ? strlen(text) : 0;
2559 char buf[SIZEOF_STR];
2561 enum line_type type;
2562 bool first_read = view->lines == 0;
2564 if (textlen <= SIZEOF_TREE_ATTR)
2567 type = text[STRING_SIZE("100644 ")] == 't'
2568 ? LINE_TREE_DIR : LINE_TREE_FILE;
2571 /* Add path info line */
2572 if (!string_format(buf, "Directory path /%s", opt_path) ||
2573 !realloc_lines(view, view->line_size + 1) ||
2574 !add_line_text(view, buf, LINE_DEFAULT))
2577 /* Insert "link" to parent directory. */
2579 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2580 !realloc_lines(view, view->line_size + 1) ||
2581 !add_line_text(view, buf, LINE_TREE_DIR))
2586 /* Strip the path part ... */
2588 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2589 size_t striplen = strlen(opt_path);
2590 char *path = text + SIZEOF_TREE_ATTR;
2592 if (pathlen > striplen)
2593 memmove(path, path + striplen,
2594 pathlen - striplen + 1);
2597 /* Skip "Directory ..." and ".." line. */
2598 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2599 struct line *line = &view->line[pos];
2600 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2601 char *path2 = text + SIZEOF_TREE_ATTR;
2602 int cmp = tree_compare_entry(line->type, path1, type, path2);
2607 text = strdup(text);
2611 if (view->lines > pos)
2612 memmove(&view->line[pos + 1], &view->line[pos],
2613 (view->lines - pos) * sizeof(*line));
2615 line = &view->line[pos];
2622 if (!add_line_text(view, text, type))
2625 /* Move the current line to the first tree entry. */
2633 tree_enter(struct view *view, struct line *line)
2635 enum open_flags flags;
2636 enum request request;
2638 switch (line->type) {
2640 /* Depending on whether it is a subdir or parent (updir?) link
2641 * mangle the path buffer. */
2642 if (line == &view->line[1] && *opt_path) {
2643 size_t path_len = strlen(opt_path);
2644 char *dirsep = opt_path + path_len - 1;
2646 while (dirsep > opt_path && dirsep[-1] != '/')
2652 size_t pathlen = strlen(opt_path);
2653 size_t origlen = pathlen;
2654 char *data = line->data;
2655 char *basename = data + SIZEOF_TREE_ATTR;
2657 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2658 opt_path[origlen] = 0;
2663 /* Trees and subtrees share the same ID, so they are not not
2664 * unique like blobs. */
2665 flags = OPEN_RELOAD;
2666 request = REQ_VIEW_TREE;
2669 case LINE_TREE_FILE:
2670 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2671 request = REQ_VIEW_BLOB;
2678 open_view(view, request, flags);
2684 tree_select(struct view *view, struct line *line)
2686 char *text = line->data + STRING_SIZE("100644 blob ");
2688 if (line->type == LINE_TREE_FILE) {
2689 string_ncopy(ref_blob, text, 40);
2691 } else if (line->type != LINE_TREE_DIR) {
2695 string_ncopy(view->ref, text, 40);
2698 static struct view_ops tree_ops = {
2708 blob_read(struct view *view, char *line)
2710 return add_line_text(view, line, LINE_DEFAULT);
2713 static struct view_ops blob_ops = {
2728 char id[SIZEOF_REV]; /* SHA1 ID. */
2729 char title[128]; /* First line of the commit message. */
2730 char author[75]; /* Author of the commit. */
2731 struct tm time; /* Date from the author ident. */
2732 struct ref **refs; /* Repository references. */
2733 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2734 size_t graph_size; /* The width of the graph array. */
2737 /* Size of rev graph with no "padding" columns */
2738 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2741 struct rev_graph *prev, *next, *parents;
2742 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2744 struct commit *commit;
2748 /* Parents of the commit being visualized. */
2749 static struct rev_graph graph_parents[4];
2751 /* The current stack of revisions on the graph. */
2752 static struct rev_graph graph_stacks[4] = {
2753 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
2754 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2755 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
2756 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
2760 graph_parent_is_merge(struct rev_graph *graph)
2762 return graph->parents->size > 1;
2766 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
2768 struct commit *commit = graph->commit;
2770 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
2771 commit->graph[commit->graph_size++] = symbol;
2775 done_rev_graph(struct rev_graph *graph)
2777 if (graph_parent_is_merge(graph) &&
2778 graph->pos < graph->size - 1 &&
2779 graph->next->size == graph->size + graph->parents->size - 1) {
2780 size_t i = graph->pos + graph->parents->size - 1;
2782 graph->commit->graph_size = i * 2;
2783 while (i < graph->next->size - 1) {
2784 append_to_rev_graph(graph, ' ');
2785 append_to_rev_graph(graph, '\\');
2790 graph->size = graph->pos = 0;
2791 graph->commit = NULL;
2792 memset(graph->parents, 0, sizeof(*graph->parents));
2796 push_rev_graph(struct rev_graph *graph, char *parent)
2800 /* "Collapse" duplicate parents lines.
2802 * FIXME: This needs to also update update the drawn graph but
2803 * for now it just serves as a method for pruning graph lines. */
2804 for (i = 0; i < graph->size; i++)
2805 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
2808 if (graph->size < SIZEOF_REVITEMS) {
2809 string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV);
2814 get_rev_graph_symbol(struct rev_graph *graph)
2818 if (graph->parents->size == 0)
2819 symbol = REVGRAPH_INIT;
2820 else if (graph_parent_is_merge(graph))
2821 symbol = REVGRAPH_MERGE;
2822 else if (graph->pos >= graph->size)
2823 symbol = REVGRAPH_BRANCH;
2825 symbol = REVGRAPH_COMMIT;
2831 draw_rev_graph(struct rev_graph *graph)
2834 chtype separator, line;
2836 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
2837 static struct rev_filler fillers[] = {
2838 { ' ', REVGRAPH_LINE },
2843 chtype symbol = get_rev_graph_symbol(graph);
2844 struct rev_filler *filler;
2847 filler = &fillers[DEFAULT];
2849 for (i = 0; i < graph->pos; i++) {
2850 append_to_rev_graph(graph, filler->line);
2851 if (graph_parent_is_merge(graph->prev) &&
2852 graph->prev->pos == i)
2853 filler = &fillers[RSHARP];
2855 append_to_rev_graph(graph, filler->separator);
2858 /* Place the symbol for this revision. */
2859 append_to_rev_graph(graph, symbol);
2861 if (graph->prev->size > graph->size)
2862 filler = &fillers[RDIAG];
2864 filler = &fillers[DEFAULT];
2868 for (; i < graph->size; i++) {
2869 append_to_rev_graph(graph, filler->separator);
2870 append_to_rev_graph(graph, filler->line);
2871 if (graph_parent_is_merge(graph->prev) &&
2872 i < graph->prev->pos + graph->parents->size)
2873 filler = &fillers[RSHARP];
2874 if (graph->prev->size > graph->size)
2875 filler = &fillers[LDIAG];
2878 if (graph->prev->size > graph->size) {
2879 append_to_rev_graph(graph, filler->separator);
2880 if (filler->line != ' ')
2881 append_to_rev_graph(graph, filler->line);
2885 /* Prepare the next rev graph */
2887 prepare_rev_graph(struct rev_graph *graph)
2891 /* First, traverse all lines of revisions up to the active one. */
2892 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2893 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2896 push_rev_graph(graph->next, graph->rev[graph->pos]);
2899 /* Interleave the new revision parent(s). */
2900 for (i = 0; i < graph->parents->size; i++)
2901 push_rev_graph(graph->next, graph->parents->rev[i]);
2903 /* Lastly, put any remaining revisions. */
2904 for (i = graph->pos + 1; i < graph->size; i++)
2905 push_rev_graph(graph->next, graph->rev[i]);
2909 update_rev_graph(struct rev_graph *graph)
2911 /* If this is the finalizing update ... */
2913 prepare_rev_graph(graph);
2915 /* Graph visualization needs a one rev look-ahead,
2916 * so the first update doesn't visualize anything. */
2917 if (!graph->prev->commit)
2920 draw_rev_graph(graph->prev);
2921 done_rev_graph(graph->prev->prev);
2930 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2932 char buf[DATE_COLS + 1];
2933 struct commit *commit = line->data;
2934 enum line_type type;
2940 if (!*commit->author)
2943 wmove(view->win, lineno, col);
2947 wattrset(view->win, get_line_attr(type));
2948 wchgat(view->win, -1, 0, type, NULL);
2951 type = LINE_MAIN_COMMIT;
2952 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2955 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2956 waddnstr(view->win, buf, timelen);
2957 waddstr(view->win, " ");
2960 wmove(view->win, lineno, col);
2961 if (type != LINE_CURSOR)
2962 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2965 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2967 authorlen = strlen(commit->author);
2968 if (authorlen > AUTHOR_COLS - 2) {
2969 authorlen = AUTHOR_COLS - 2;
2975 waddnstr(view->win, commit->author, authorlen);
2976 if (type != LINE_CURSOR)
2977 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2978 waddch(view->win, '~');
2980 waddstr(view->win, commit->author);
2984 if (type != LINE_CURSOR)
2985 wattrset(view->win, A_NORMAL);
2987 if (opt_rev_graph && commit->graph_size) {
2990 wmove(view->win, lineno, col);
2991 /* Using waddch() instead of waddnstr() ensures that
2992 * they'll be rendered correctly for the cursor line. */
2993 for (i = 0; i < commit->graph_size; i++)
2994 waddch(view->win, commit->graph[i]);
2996 waddch(view->win, ' ');
2997 col += commit->graph_size + 1;
3000 wmove(view->win, lineno, col);
3006 if (type == LINE_CURSOR)
3008 else if (commit->refs[i]->tag)
3009 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
3010 else if (commit->refs[i]->remote)
3011 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
3013 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3014 waddstr(view->win, "[");
3015 waddstr(view->win, commit->refs[i]->name);
3016 waddstr(view->win, "]");
3017 if (type != LINE_CURSOR)
3018 wattrset(view->win, A_NORMAL);
3019 waddstr(view->win, " ");
3020 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3021 } while (commit->refs[i++]->next);
3024 if (type != LINE_CURSOR)
3025 wattrset(view->win, get_line_attr(type));
3028 int titlelen = strlen(commit->title);
3030 if (col + titlelen > view->width)
3031 titlelen = view->width - col;
3033 waddnstr(view->win, commit->title, titlelen);
3039 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3041 main_read(struct view *view, char *line)
3043 static struct rev_graph *graph = graph_stacks;
3044 enum line_type type;
3045 struct commit *commit = view->lines
3046 ? view->line[view->lines - 1].data : NULL;
3049 update_rev_graph(graph);
3053 type = get_line_type(line);
3057 commit = calloc(1, sizeof(struct commit));
3061 line += STRING_SIZE("commit ");
3063 view->line[view->lines++].data = commit;
3064 string_copy(commit->id, line);
3065 commit->refs = get_refs(commit->id);
3066 graph->commit = commit;
3071 line += STRING_SIZE("parent ");
3072 push_rev_graph(graph->parents, line);
3078 /* Parse author lines where the name may be empty:
3079 * author <email@address.tld> 1138474660 +0100
3081 char *ident = line + STRING_SIZE("author ");
3082 char *nameend = strchr(ident, '<');
3083 char *emailend = strchr(ident, '>');
3085 if (!commit || !nameend || !emailend)
3088 update_rev_graph(graph);
3089 graph = graph->next;
3091 *nameend = *emailend = 0;
3092 ident = chomp_string(ident);
3094 ident = chomp_string(nameend + 1);
3099 string_copy(commit->author, ident);
3101 /* Parse epoch and timezone */
3102 if (emailend[1] == ' ') {
3103 char *secs = emailend + 2;
3104 char *zone = strchr(secs, ' ');
3105 time_t time = (time_t) atol(secs);
3107 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3111 tz = ('0' - zone[1]) * 60 * 60 * 10;
3112 tz += ('0' - zone[2]) * 60 * 60;
3113 tz += ('0' - zone[3]) * 60;
3114 tz += ('0' - zone[4]) * 60;
3122 gmtime_r(&time, &commit->time);
3130 /* Fill in the commit title if it has not already been set. */
3131 if (commit->title[0])
3134 /* Require titles to start with a non-space character at the
3135 * offset used by git log. */
3136 if (strncmp(line, " ", 4))
3139 /* Well, if the title starts with a whitespace character,
3140 * try to be forgiving. Otherwise we end up with no title. */
3141 while (isspace(*line))
3145 /* FIXME: More graceful handling of titles; append "..." to
3146 * shortened titles, etc. */
3148 string_copy(commit->title, line);
3155 main_enter(struct view *view, struct line *line)
3157 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3159 open_view(view, REQ_VIEW_DIFF, flags);
3164 main_grep(struct view *view, struct line *line)
3166 struct commit *commit = line->data;
3167 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3168 char buf[DATE_COLS + 1];
3171 for (state = S_TITLE; state < S_END; state++) {
3175 case S_TITLE: text = commit->title; break;
3176 case S_AUTHOR: text = commit->author; break;
3178 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3187 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3195 main_select(struct view *view, struct line *line)
3197 struct commit *commit = line->data;
3199 string_copy(view->ref, commit->id);
3200 string_copy(ref_commit, view->ref);
3203 static struct view_ops main_ops = {
3214 * Unicode / UTF-8 handling
3216 * NOTE: Much of the following code for dealing with unicode is derived from
3217 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3218 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3221 /* I've (over)annotated a lot of code snippets because I am not entirely
3222 * confident that the approach taken by this small UTF-8 interface is correct.
3226 unicode_width(unsigned long c)
3229 (c <= 0x115f /* Hangul Jamo */
3232 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3234 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3235 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3236 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3237 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3238 || (c >= 0xffe0 && c <= 0xffe6)
3239 || (c >= 0x20000 && c <= 0x2fffd)
3240 || (c >= 0x30000 && c <= 0x3fffd)))
3246 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3247 * Illegal bytes are set one. */
3248 static const unsigned char utf8_bytes[256] = {
3249 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,
3250 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,
3251 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,
3252 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,
3253 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,
3254 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,
3255 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,
3256 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,
3259 /* Decode UTF-8 multi-byte representation into a unicode character. */
3260 static inline unsigned long
3261 utf8_to_unicode(const char *string, size_t length)
3263 unsigned long unicode;
3267 unicode = string[0];
3270 unicode = (string[0] & 0x1f) << 6;
3271 unicode += (string[1] & 0x3f);
3274 unicode = (string[0] & 0x0f) << 12;
3275 unicode += ((string[1] & 0x3f) << 6);
3276 unicode += (string[2] & 0x3f);
3279 unicode = (string[0] & 0x0f) << 18;
3280 unicode += ((string[1] & 0x3f) << 12);
3281 unicode += ((string[2] & 0x3f) << 6);
3282 unicode += (string[3] & 0x3f);
3285 unicode = (string[0] & 0x0f) << 24;
3286 unicode += ((string[1] & 0x3f) << 18);
3287 unicode += ((string[2] & 0x3f) << 12);
3288 unicode += ((string[3] & 0x3f) << 6);
3289 unicode += (string[4] & 0x3f);
3292 unicode = (string[0] & 0x01) << 30;
3293 unicode += ((string[1] & 0x3f) << 24);
3294 unicode += ((string[2] & 0x3f) << 18);
3295 unicode += ((string[3] & 0x3f) << 12);
3296 unicode += ((string[4] & 0x3f) << 6);
3297 unicode += (string[5] & 0x3f);
3300 die("Invalid unicode length");
3303 /* Invalid characters could return the special 0xfffd value but NUL
3304 * should be just as good. */
3305 return unicode > 0xffff ? 0 : unicode;
3308 /* Calculates how much of string can be shown within the given maximum width
3309 * and sets trimmed parameter to non-zero value if all of string could not be
3312 * Additionally, adds to coloffset how many many columns to move to align with
3313 * the expected position. Takes into account how multi-byte and double-width
3314 * characters will effect the cursor position.
3316 * Returns the number of bytes to output from string to satisfy max_width. */
3318 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3320 const char *start = string;
3321 const char *end = strchr(string, '\0');
3327 while (string < end) {
3328 int c = *(unsigned char *) string;
3329 unsigned char bytes = utf8_bytes[c];
3331 unsigned long unicode;
3333 if (string + bytes > end)
3336 /* Change representation to figure out whether
3337 * it is a single- or double-width character. */
3339 unicode = utf8_to_unicode(string, bytes);
3340 /* FIXME: Graceful handling of invalid unicode character. */
3344 ucwidth = unicode_width(unicode);
3346 if (width > max_width) {
3351 /* The column offset collects the differences between the
3352 * number of bytes encoding a character and the number of
3353 * columns will be used for rendering said character.
3355 * So if some character A is encoded in 2 bytes, but will be
3356 * represented on the screen using only 1 byte this will and up
3357 * adding 1 to the multi-byte column offset.
3359 * Assumes that no double-width character can be encoding in
3360 * less than two bytes. */
3361 if (bytes > ucwidth)
3362 mbwidth += bytes - ucwidth;
3367 *coloffset += mbwidth;
3369 return string - start;
3377 /* Whether or not the curses interface has been initialized. */
3378 static bool cursed = FALSE;
3380 /* The status window is used for polling keystrokes. */
3381 static WINDOW *status_win;
3383 static bool status_empty = TRUE;
3385 /* Update status and title window. */
3387 report(const char *msg, ...)
3389 struct view *view = display[current_view];
3394 if (!status_empty || *msg) {
3397 va_start(args, msg);
3399 wmove(status_win, 0, 0);
3401 vwprintw(status_win, msg, args);
3402 status_empty = FALSE;
3404 status_empty = TRUE;
3406 wclrtoeol(status_win);
3407 wrefresh(status_win);
3412 update_view_title(view);
3413 update_display_cursor(view);
3416 /* Controls when nodelay should be in effect when polling user input. */
3418 set_nonblocking_input(bool loading)
3420 static unsigned int loading_views;
3422 if ((loading == FALSE && loading_views-- == 1) ||
3423 (loading == TRUE && loading_views++ == 0))
3424 nodelay(status_win, loading);
3432 /* Initialize the curses library */
3433 if (isatty(STDIN_FILENO)) {
3434 cursed = !!initscr();
3436 /* Leave stdin and stdout alone when acting as a pager. */
3437 FILE *io = fopen("/dev/tty", "r+");
3440 die("Failed to open /dev/tty");
3441 cursed = !!newterm(NULL, io, io);
3445 die("Failed to initialize curses");
3447 nonl(); /* Tell curses not to do NL->CR/NL on output */
3448 cbreak(); /* Take input chars one at a time, no wait for \n */
3449 noecho(); /* Don't echo input */
3450 leaveok(stdscr, TRUE);
3455 getmaxyx(stdscr, y, x);
3456 status_win = newwin(1, 0, y - 1, 0);
3458 die("Failed to create status window");
3460 /* Enable keyboard mapping */
3461 keypad(status_win, TRUE);
3462 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3466 read_prompt(const char *prompt)
3468 enum { READING, STOP, CANCEL } status = READING;
3469 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3472 while (status == READING) {
3478 foreach_view (view, i)
3483 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3484 wclrtoeol(status_win);
3486 /* Refresh, accept single keystroke of input */
3487 key = wgetch(status_win);
3492 status = pos ? STOP : CANCEL;
3510 if (pos >= sizeof(buf)) {
3511 report("Input string too long");
3516 buf[pos++] = (char) key;
3520 /* Clear the status window */
3521 status_empty = FALSE;
3524 if (status == CANCEL)
3533 * Repository references
3536 static struct ref *refs;
3537 static size_t refs_size;
3539 /* Id <-> ref store */
3540 static struct ref ***id_refs;
3541 static size_t id_refs_size;
3543 static struct ref **
3546 struct ref ***tmp_id_refs;
3547 struct ref **ref_list = NULL;
3548 size_t ref_list_size = 0;
3551 for (i = 0; i < id_refs_size; i++)
3552 if (!strcmp(id, id_refs[i][0]->id))
3555 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3559 id_refs = tmp_id_refs;
3561 for (i = 0; i < refs_size; i++) {
3564 if (strcmp(id, refs[i].id))
3567 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3575 if (ref_list_size > 0)
3576 ref_list[ref_list_size - 1]->next = 1;
3577 ref_list[ref_list_size] = &refs[i];
3579 /* XXX: The properties of the commit chains ensures that we can
3580 * safely modify the shared ref. The repo references will
3581 * always be similar for the same id. */
3582 ref_list[ref_list_size]->next = 0;
3587 id_refs[id_refs_size++] = ref_list;
3593 read_ref(char *id, int idlen, char *name, int namelen)
3597 bool remote = FALSE;
3599 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3600 /* Commits referenced by tags has "^{}" appended. */
3601 if (name[namelen - 1] != '}')
3604 while (namelen > 0 && name[namelen] != '^')
3608 namelen -= STRING_SIZE("refs/tags/");
3609 name += STRING_SIZE("refs/tags/");
3611 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
3613 namelen -= STRING_SIZE("refs/remotes/");
3614 name += STRING_SIZE("refs/remotes/");
3616 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3617 namelen -= STRING_SIZE("refs/heads/");
3618 name += STRING_SIZE("refs/heads/");
3620 } else if (!strcmp(name, "HEAD")) {
3624 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3628 ref = &refs[refs_size++];
3629 ref->name = malloc(namelen + 1);
3633 strncpy(ref->name, name, namelen);
3634 ref->name[namelen] = 0;
3636 ref->remote = remote;
3637 string_copy(ref->id, id);
3645 const char *cmd_env = getenv("TIG_LS_REMOTE");
3646 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3648 return read_properties(popen(cmd, "r"), "\t", read_ref);
3652 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3654 if (!strcmp(name, "i18n.commitencoding"))
3655 string_copy(opt_encoding, value);
3661 load_repo_config(void)
3663 return read_properties(popen("git repo-config --list", "r"),
3664 "=", read_repo_config_option);
3668 read_properties(FILE *pipe, const char *separators,
3669 int (*read_property)(char *, int, char *, int))
3671 char buffer[BUFSIZ];
3678 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3683 name = chomp_string(name);
3684 namelen = strcspn(name, separators);
3686 if (name[namelen]) {
3688 value = chomp_string(name + namelen + 1);
3689 valuelen = strlen(value);
3696 state = read_property(name, namelen, value, valuelen);
3699 if (state != ERR && ferror(pipe))
3712 static void __NORETURN
3715 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3721 static void __NORETURN
3722 die(const char *err, ...)
3728 va_start(args, err);
3729 fputs("tig: ", stderr);
3730 vfprintf(stderr, err, args);
3731 fputs("\n", stderr);
3738 main(int argc, char *argv[])
3741 enum request request;
3744 signal(SIGINT, quit);
3746 if (setlocale(LC_ALL, "")) {
3747 string_copy(opt_codeset, nl_langinfo(CODESET));
3750 if (load_options() == ERR)
3751 die("Failed to load user config.");
3753 /* Load the repo config file so options can be overwritten from
3754 * the command line. */
3755 if (load_repo_config() == ERR)
3756 die("Failed to load repo config.");
3758 if (!parse_options(argc, argv))
3761 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3762 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3763 if (opt_iconv == ICONV_NONE)
3764 die("Failed to initialize character set conversion");
3767 if (load_refs() == ERR)
3768 die("Failed to load refs.");
3770 /* Require a git repository unless when running in pager mode. */
3771 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3772 die("Not a git repository");
3774 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3775 view->cmd_env = getenv(view->cmd_env);
3777 request = opt_request;
3781 while (view_driver(display[current_view], request)) {
3785 foreach_view (view, i)
3788 /* Refresh, accept single keystroke of input */
3789 key = wgetch(status_win);
3791 /* wgetch() with nodelay() enabled returns ERR when there's no
3798 request = get_keybinding(display[current_view]->keymap, key);
3800 /* Some low-level request handling. This keeps access to
3801 * status_win restricted. */
3805 char *cmd = read_prompt(":");
3807 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3808 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3809 opt_request = REQ_VIEW_DIFF;
3811 opt_request = REQ_VIEW_PAGER;
3820 case REQ_SEARCH_BACK:
3822 const char *prompt = request == REQ_SEARCH
3824 char *search = read_prompt(prompt);
3827 string_copy(opt_search, search);
3832 case REQ_SCREEN_RESIZE:
3836 getmaxyx(stdscr, height, width);
3838 /* Resize the status view and let the view driver take
3839 * care of resizing the displayed views. */
3840 wresize(status_win, 1, width);
3841 mvwin(status_win, height - 1, 0);
3842 wrefresh(status_win);