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-0.4.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 */
63 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
65 /* This color name can be used to refer to the default term colors. */
66 #define COLOR_DEFAULT (-1)
68 #define ICONV_NONE ((iconv_t) -1)
70 /* The format and size of the date column in the main view. */
71 #define DATE_FORMAT "%Y-%m-%d %H:%M"
72 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
74 #define AUTHOR_COLS 20
76 /* The default interval between line numbers. */
77 #define NUMBER_INTERVAL 1
81 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
83 #define TIG_LS_REMOTE \
84 "git ls-remote . 2>/dev/null"
86 #define TIG_DIFF_CMD \
87 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
90 "git log --cc --stat -n100 %s 2>/dev/null"
92 #define TIG_MAIN_CMD \
93 "git log --topo-order --pretty=raw %s 2>/dev/null"
95 #define TIG_TREE_CMD \
98 #define TIG_BLOB_CMD \
99 "git cat-file blob %s"
101 /* XXX: Needs to be defined to the empty string. */
102 #define TIG_HELP_CMD ""
103 #define TIG_PAGER_CMD ""
105 /* Some ascii-shorthands fitted into the ncurses namespace. */
107 #define KEY_RETURN '\r'
112 char *name; /* Ref name; tag or head names are shortened. */
113 char id[SIZEOF_REV]; /* Commit SHA1 ID */
114 unsigned int tag:1; /* Is it a tag? */
115 unsigned int next:1; /* For ref lists: are there more refs? */
118 static struct ref **get_refs(char *id);
127 set_from_int_map(struct int_map *map, size_t map_size,
128 int *value, const char *name, int namelen)
133 for (i = 0; i < map_size; i++)
134 if (namelen == map[i].namelen &&
135 !strncasecmp(name, map[i].name, namelen)) {
136 *value = map[i].value;
149 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
151 if (srclen > dstlen - 1)
154 strncpy(dst, src, srclen);
158 /* Shorthands for safely copying into a fixed buffer. */
160 #define string_copy(dst, src) \
161 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
163 #define string_ncopy(dst, src, srclen) \
164 string_ncopy_do(dst, sizeof(dst), src, srclen)
167 chomp_string(char *name)
171 while (isspace(*name))
174 namelen = strlen(name) - 1;
175 while (namelen > 0 && isspace(name[namelen]))
182 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
185 size_t pos = bufpos ? *bufpos : 0;
188 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
194 return pos >= bufsize ? FALSE : TRUE;
197 #define string_format(buf, fmt, args...) \
198 string_nformat(buf, sizeof(buf), NULL, fmt, args)
200 #define string_format_from(buf, from, fmt, args...) \
201 string_nformat(buf, sizeof(buf), from, fmt, args)
204 string_enum_compare(const char *str1, const char *str2, int len)
208 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
210 /* Diff-Header == DIFF_HEADER */
211 for (i = 0; i < len; i++) {
212 if (toupper(str1[i]) == toupper(str2[i]))
215 if (string_enum_sep(str1[i]) &&
216 string_enum_sep(str2[i]))
219 return str1[i] - str2[i];
227 * NOTE: The following is a slightly modified copy of the git project's shell
228 * quoting routines found in the quote.c file.
230 * Help to copy the thing properly quoted for the shell safety. any single
231 * quote is replaced with '\'', any exclamation point is replaced with '\!',
232 * and the whole thing is enclosed in a
235 * original sq_quote result
236 * name ==> name ==> 'name'
237 * a b ==> a b ==> 'a b'
238 * a'b ==> a'\''b ==> 'a'\''b'
239 * a!b ==> a'\!'b ==> 'a'\!'b'
243 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
247 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
250 while ((c = *src++)) {
251 if (c == '\'' || c == '!') {
271 /* XXX: Keep the view request first and in sync with views[]. */ \
272 REQ_GROUP("View switching") \
273 REQ_(VIEW_MAIN, "Show main view"), \
274 REQ_(VIEW_DIFF, "Show diff view"), \
275 REQ_(VIEW_LOG, "Show log view"), \
276 REQ_(VIEW_TREE, "Show tree view"), \
277 REQ_(VIEW_BLOB, "Show blob view"), \
278 REQ_(VIEW_HELP, "Show help page"), \
279 REQ_(VIEW_PAGER, "Show pager view"), \
281 REQ_GROUP("View manipulation") \
282 REQ_(ENTER, "Enter current line and scroll"), \
283 REQ_(NEXT, "Move to next"), \
284 REQ_(PREVIOUS, "Move to previous"), \
285 REQ_(VIEW_NEXT, "Move focus to next view"), \
286 REQ_(VIEW_CLOSE, "Close the current view"), \
287 REQ_(QUIT, "Close all views and quit"), \
289 REQ_GROUP("Cursor navigation") \
290 REQ_(MOVE_UP, "Move cursor one line up"), \
291 REQ_(MOVE_DOWN, "Move cursor one line down"), \
292 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
293 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
294 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
295 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
297 REQ_GROUP("Scrolling") \
298 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
299 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
300 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
301 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
303 REQ_GROUP("Searching") \
304 REQ_(SEARCH, "Search the view"), \
305 REQ_(SEARCH_BACK, "Search backwards in the view"), \
306 REQ_(FIND_NEXT, "Find next search match"), \
307 REQ_(FIND_PREV, "Find previous search match"), \
310 REQ_(NONE, "Do nothing"), \
311 REQ_(PROMPT, "Bring up the prompt"), \
312 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
313 REQ_(SCREEN_RESIZE, "Resize the screen"), \
314 REQ_(SHOW_VERSION, "Show version information"), \
315 REQ_(STOP_LOADING, "Stop all loading views"), \
316 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
317 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
320 /* User action requests. */
322 #define REQ_GROUP(help)
323 #define REQ_(req, help) REQ_##req
325 /* Offset all requests to avoid conflicts with ncurses getch values. */
326 REQ_OFFSET = KEY_MAX + 1,
334 struct request_info {
335 enum request request;
341 static struct request_info req_info[] = {
342 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
343 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
350 get_request(const char *name)
352 int namelen = strlen(name);
355 for (i = 0; i < ARRAY_SIZE(req_info); i++)
356 if (req_info[i].namelen == namelen &&
357 !string_enum_compare(req_info[i].name, name, namelen))
358 return req_info[i].request;
368 static const char usage[] =
369 VERSION " (" __DATE__ ")\n"
371 "Usage: tig [options]\n"
372 " or: tig [options] [--] [git log options]\n"
373 " or: tig [options] log [git log options]\n"
374 " or: tig [options] diff [git diff options]\n"
375 " or: tig [options] show [git show options]\n"
376 " or: tig [options] < [git command output]\n"
379 " -l Start up in log view\n"
380 " -d Start up in diff view\n"
381 " -n[I], --line-number[=I] Show line numbers with given interval\n"
382 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
383 " -- Mark end of tig options\n"
384 " -v, --version Show version and exit\n"
385 " -h, --help Show help message and exit\n";
387 /* Option and state variables. */
388 static bool opt_line_number = FALSE;
389 static bool opt_rev_graph = TRUE;
390 static int opt_num_interval = NUMBER_INTERVAL;
391 static int opt_tab_size = TABSIZE;
392 static enum request opt_request = REQ_VIEW_MAIN;
393 static char opt_cmd[SIZEOF_STR] = "";
394 static char opt_path[SIZEOF_STR] = "";
395 static FILE *opt_pipe = NULL;
396 static char opt_encoding[20] = "UTF-8";
397 static bool opt_utf8 = TRUE;
398 static char opt_codeset[20] = "UTF-8";
399 static iconv_t opt_iconv = ICONV_NONE;
400 static char opt_search[SIZEOF_STR] = "";
408 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
418 int namelen = strlen(name);
422 if (strncmp(opt, name, namelen))
425 if (opt[namelen] == '=')
426 value = opt + namelen + 1;
429 if (!short_name || opt[1] != short_name)
434 va_start(args, type);
435 if (type == OPT_INT) {
436 number = va_arg(args, int *);
438 *number = atoi(value);
445 /* Returns the index of log or diff command or -1 to exit. */
447 parse_options(int argc, char *argv[])
451 for (i = 1; i < argc; i++) {
454 if (!strcmp(opt, "-l")) {
455 opt_request = REQ_VIEW_LOG;
459 if (!strcmp(opt, "-d")) {
460 opt_request = REQ_VIEW_DIFF;
464 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
465 opt_line_number = TRUE;
469 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
470 opt_tab_size = MIN(opt_tab_size, TABSIZE);
474 if (check_option(opt, 'v', "version", OPT_NONE)) {
475 printf("tig version %s\n", VERSION);
479 if (check_option(opt, 'h', "help", OPT_NONE)) {
484 if (!strcmp(opt, "--")) {
489 if (!strcmp(opt, "log") ||
490 !strcmp(opt, "diff") ||
491 !strcmp(opt, "show")) {
492 opt_request = opt[0] == 'l'
493 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
497 if (opt[0] && opt[0] != '-')
500 die("unknown option '%s'\n\n%s", opt, usage);
503 if (!isatty(STDIN_FILENO)) {
504 opt_request = REQ_VIEW_PAGER;
507 } else if (i < argc) {
510 if (opt_request == REQ_VIEW_MAIN)
511 /* XXX: This is vulnerable to the user overriding
512 * options required for the main view parser. */
513 string_copy(opt_cmd, "git log --stat --pretty=raw");
515 string_copy(opt_cmd, "git");
516 buf_size = strlen(opt_cmd);
518 while (buf_size < sizeof(opt_cmd) && i < argc) {
519 opt_cmd[buf_size++] = ' ';
520 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
523 if (buf_size >= sizeof(opt_cmd))
524 die("command too long");
526 opt_cmd[buf_size] = 0;
530 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
538 * Line-oriented content detection.
542 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
543 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
544 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
545 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
546 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
547 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
549 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
550 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
556 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
557 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
558 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
563 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
564 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
566 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
567 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
568 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
570 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
571 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
572 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
574 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
575 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
576 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
577 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
578 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
579 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
580 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
581 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
582 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
585 #define LINE(type, line, fg, bg, attr) \
592 const char *name; /* Option name. */
593 int namelen; /* Size of option name. */
594 const char *line; /* The start of line to match. */
595 int linelen; /* Size of string to match. */
596 int fg, bg, attr; /* Color and text attributes for the lines. */
599 static struct line_info line_info[] = {
600 #define LINE(type, line, fg, bg, attr) \
601 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
606 static enum line_type
607 get_line_type(char *line)
609 int linelen = strlen(line);
612 for (type = 0; type < ARRAY_SIZE(line_info); type++)
613 /* Case insensitive search matches Signed-off-by lines better. */
614 if (linelen >= line_info[type].linelen &&
615 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
622 get_line_attr(enum line_type type)
624 assert(type < ARRAY_SIZE(line_info));
625 return COLOR_PAIR(type) | line_info[type].attr;
628 static struct line_info *
629 get_line_info(char *name, int namelen)
633 for (type = 0; type < ARRAY_SIZE(line_info); type++)
634 if (namelen == line_info[type].namelen &&
635 !string_enum_compare(line_info[type].name, name, namelen))
636 return &line_info[type];
644 int default_bg = COLOR_BLACK;
645 int default_fg = COLOR_WHITE;
650 if (use_default_colors() != ERR) {
655 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
656 struct line_info *info = &line_info[type];
657 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
658 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
660 init_pair(type, fg, bg);
668 unsigned int selected:1;
670 void *data; /* User data */
680 enum request request;
681 struct keybinding *next;
684 static struct keybinding default_keybindings[] = {
686 { 'm', REQ_VIEW_MAIN },
687 { 'd', REQ_VIEW_DIFF },
688 { 'l', REQ_VIEW_LOG },
689 { 't', REQ_VIEW_TREE },
690 { 'f', REQ_VIEW_BLOB },
691 { 'p', REQ_VIEW_PAGER },
692 { 'h', REQ_VIEW_HELP },
694 /* View manipulation */
695 { 'q', REQ_VIEW_CLOSE },
696 { KEY_TAB, REQ_VIEW_NEXT },
697 { KEY_RETURN, REQ_ENTER },
698 { KEY_UP, REQ_PREVIOUS },
699 { KEY_DOWN, REQ_NEXT },
701 /* Cursor navigation */
702 { 'k', REQ_MOVE_UP },
703 { 'j', REQ_MOVE_DOWN },
704 { KEY_HOME, REQ_MOVE_FIRST_LINE },
705 { KEY_END, REQ_MOVE_LAST_LINE },
706 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
707 { ' ', REQ_MOVE_PAGE_DOWN },
708 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
709 { 'b', REQ_MOVE_PAGE_UP },
710 { '-', REQ_MOVE_PAGE_UP },
713 { KEY_IC, REQ_SCROLL_LINE_UP },
714 { KEY_DC, REQ_SCROLL_LINE_DOWN },
715 { 'w', REQ_SCROLL_PAGE_UP },
716 { 's', REQ_SCROLL_PAGE_DOWN },
720 { '?', REQ_SEARCH_BACK },
721 { 'n', REQ_FIND_NEXT },
722 { 'N', REQ_FIND_PREV },
726 { 'z', REQ_STOP_LOADING },
727 { 'v', REQ_SHOW_VERSION },
728 { 'r', REQ_SCREEN_REDRAW },
729 { '.', REQ_TOGGLE_LINENO },
730 { 'g', REQ_TOGGLE_REV_GRAPH },
733 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
736 /* Using the ncurses SIGWINCH handler. */
737 { KEY_RESIZE, REQ_SCREEN_RESIZE },
740 #define KEYMAP_INFO \
751 #define KEYMAP_(name) KEYMAP_##name
756 static struct int_map keymap_table[] = {
757 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
762 #define set_keymap(map, name) \
763 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
765 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
768 add_keybinding(enum keymap keymap, enum request request, int key)
770 struct keybinding *keybinding = keybindings[keymap];
773 keybinding = calloc(1, sizeof(*keybinding));
775 die("Failed to allocate keybinding");
777 keybinding->alias = key;
778 keybinding->request = request;
779 keybinding->next = keybindings[keymap];
780 keybindings[keymap] = keybinding;
783 /* Looks for a key binding first in the given map, then in the generic map, and
784 * lastly in the default keybindings. */
786 get_keybinding(enum keymap keymap, int key)
788 struct keybinding *kbd;
791 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
792 if (kbd->alias == key)
795 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
796 if (kbd->alias == key)
799 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
800 if (default_keybindings[i].alias == key)
801 return default_keybindings[i].request;
803 return (enum request) key;
812 static struct key key_table[] = {
813 { "Enter", KEY_RETURN },
815 { "Backspace", KEY_BACKSPACE },
817 { "Escape", KEY_ESC },
818 { "Left", KEY_LEFT },
819 { "Right", KEY_RIGHT },
821 { "Down", KEY_DOWN },
822 { "Insert", KEY_IC },
823 { "Delete", KEY_DC },
825 { "Home", KEY_HOME },
827 { "PageUp", KEY_PPAGE },
828 { "PageDown", KEY_NPAGE },
838 { "F10", KEY_F(10) },
839 { "F11", KEY_F(11) },
840 { "F12", KEY_F(12) },
844 get_key_value(const char *name)
848 for (i = 0; i < ARRAY_SIZE(key_table); i++)
849 if (!strcasecmp(key_table[i].name, name))
850 return key_table[i].value;
852 if (strlen(name) == 1 && isprint(*name))
859 get_key(enum request request)
861 static char buf[BUFSIZ];
862 static char key_char[] = "'X'";
869 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
870 struct keybinding *keybinding = &default_keybindings[i];
874 if (keybinding->request != request)
877 for (key = 0; key < ARRAY_SIZE(key_table); key++)
878 if (key_table[key].value == keybinding->alias)
879 seq = key_table[key].name;
882 keybinding->alias < 127 &&
883 isprint(keybinding->alias)) {
884 key_char[1] = (char) keybinding->alias;
891 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
892 return "Too many keybindings!";
901 * User config file handling.
904 static struct int_map color_map[] = {
905 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
917 #define set_color(color, name) \
918 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
920 static struct int_map attr_map[] = {
921 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
931 #define set_attribute(attr, name) \
932 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
934 static int config_lineno;
935 static bool config_errors;
936 static char *config_msg;
938 /* Wants: object fgcolor bgcolor [attr] */
940 option_color_command(int argc, char *argv[])
942 struct line_info *info;
944 if (argc != 3 && argc != 4) {
945 config_msg = "Wrong number of arguments given to color command";
949 info = get_line_info(argv[0], strlen(argv[0]));
951 config_msg = "Unknown color name";
955 if (set_color(&info->fg, argv[1]) == ERR ||
956 set_color(&info->bg, argv[2]) == ERR) {
957 config_msg = "Unknown color";
961 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
962 config_msg = "Unknown attribute";
969 /* Wants: name = value */
971 option_set_command(int argc, char *argv[])
974 config_msg = "Wrong number of arguments given to set command";
978 if (strcmp(argv[1], "=")) {
979 config_msg = "No value assigned";
983 if (!strcmp(argv[0], "show-rev-graph")) {
984 opt_rev_graph = (!strcmp(argv[2], "1") ||
985 !strcmp(argv[2], "true") ||
986 !strcmp(argv[2], "yes"));
990 if (!strcmp(argv[0], "line-number-interval")) {
991 opt_num_interval = atoi(argv[2]);
995 if (!strcmp(argv[0], "tab-size")) {
996 opt_tab_size = atoi(argv[2]);
1000 if (!strcmp(argv[0], "commit-encoding")) {
1001 char *arg = argv[2];
1002 int delimiter = *arg;
1005 switch (delimiter) {
1008 for (arg++, i = 0; arg[i]; i++)
1009 if (arg[i] == delimiter) {
1014 string_copy(opt_encoding, arg);
1019 config_msg = "Unknown variable name";
1023 /* Wants: mode request key */
1025 option_bind_command(int argc, char *argv[])
1027 enum request request;
1032 config_msg = "Wrong number of arguments given to bind command";
1036 if (set_keymap(&keymap, argv[0]) == ERR) {
1037 config_msg = "Unknown key map";
1041 key = get_key_value(argv[1]);
1043 config_msg = "Unknown key";
1047 request = get_request(argv[2]);
1048 if (request == REQ_UNKNOWN) {
1049 config_msg = "Unknown request name";
1053 add_keybinding(keymap, request, key);
1059 set_option(char *opt, char *value)
1066 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1067 argv[argc++] = value;
1074 while (isspace(*value))
1078 if (!strcmp(opt, "color"))
1079 return option_color_command(argc, argv);
1081 if (!strcmp(opt, "set"))
1082 return option_set_command(argc, argv);
1084 if (!strcmp(opt, "bind"))
1085 return option_bind_command(argc, argv);
1087 config_msg = "Unknown option command";
1092 read_option(char *opt, int optlen, char *value, int valuelen)
1097 config_msg = "Internal error";
1099 /* Check for comment markers, since read_properties() will
1100 * only ensure opt and value are split at first " \t". */
1101 optlen = strcspn(opt, "#");
1105 if (opt[optlen] != 0) {
1106 config_msg = "No option value";
1110 /* Look for comment endings in the value. */
1111 int len = strcspn(value, "#");
1113 if (len < valuelen) {
1115 value[valuelen] = 0;
1118 status = set_option(opt, value);
1121 if (status == ERR) {
1122 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1123 config_lineno, optlen, opt, config_msg);
1124 config_errors = TRUE;
1127 /* Always keep going if errors are encountered. */
1134 char *home = getenv("HOME");
1135 char buf[SIZEOF_STR];
1139 config_errors = FALSE;
1141 if (!home || !string_format(buf, "%s/.tigrc", home))
1144 /* It's ok that the file doesn't exist. */
1145 file = fopen(buf, "r");
1149 if (read_properties(file, " \t", read_option) == ERR ||
1150 config_errors == TRUE)
1151 fprintf(stderr, "Errors while loading %s.\n", buf);
1164 /* The display array of active views and the index of the current view. */
1165 static struct view *display[2];
1166 static unsigned int current_view;
1168 #define foreach_displayed_view(view, i) \
1169 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1171 #define displayed_views() (display[1] != NULL ? 2 : 1)
1173 /* Current head and commit ID */
1174 static char ref_blob[SIZEOF_REF] = "";
1175 static char ref_commit[SIZEOF_REF] = "HEAD";
1176 static char ref_head[SIZEOF_REF] = "HEAD";
1179 const char *name; /* View name */
1180 const char *cmd_fmt; /* Default command line format */
1181 const char *cmd_env; /* Command line set via environment */
1182 const char *id; /* Points to either of ref_{head,commit,blob} */
1184 struct view_ops *ops; /* View operations */
1186 enum keymap keymap; /* What keymap does this view have */
1188 char cmd[SIZEOF_STR]; /* Command buffer */
1189 char ref[SIZEOF_REF]; /* Hovered commit reference */
1190 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1192 int height, width; /* The width and height of the main window */
1193 WINDOW *win; /* The main window */
1194 WINDOW *title; /* The title window living below the main window */
1197 unsigned long offset; /* Offset of the window top */
1198 unsigned long lineno; /* Current line number */
1201 char grep[SIZEOF_STR]; /* Search string */
1202 regex_t *regex; /* Pre-compiled regex */
1204 /* If non-NULL, points to the view that opened this view. If this view
1205 * is closed tig will switch back to the parent view. */
1206 struct view *parent;
1209 unsigned long lines; /* Total number of lines */
1210 struct line *line; /* Line index */
1211 unsigned long line_size;/* Total number of allocated lines */
1212 unsigned int digits; /* Number of digits in the lines member. */
1220 /* What type of content being displayed. Used in the title bar. */
1222 /* Draw one line; @lineno must be < view->height. */
1223 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1224 /* Read one line; updates view->line. */
1225 bool (*read)(struct view *view, char *data);
1226 /* Depending on view, change display based on current line. */
1227 bool (*enter)(struct view *view, struct line *line);
1228 /* Search for regex in a line. */
1229 bool (*grep)(struct view *view, struct line *line);
1231 void (*select)(struct view *view, struct line *line);
1234 static struct view_ops pager_ops;
1235 static struct view_ops main_ops;
1236 static struct view_ops tree_ops;
1237 static struct view_ops blob_ops;
1239 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1240 { name, cmd, #env, ref, ops, map}
1242 #define VIEW_(id, name, ops, ref) \
1243 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1246 static struct view views[] = {
1247 VIEW_(MAIN, "main", &main_ops, ref_head),
1248 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1249 VIEW_(LOG, "log", &pager_ops, ref_head),
1250 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1251 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1252 VIEW_(HELP, "help", &pager_ops, "static"),
1253 VIEW_(PAGER, "pager", &pager_ops, "static"),
1256 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1258 #define foreach_view(view, i) \
1259 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1261 #define view_is_displayed(view) \
1262 (view == display[0] || view == display[1])
1265 draw_view_line(struct view *view, unsigned int lineno)
1268 bool selected = (view->offset + lineno == view->lineno);
1271 assert(view_is_displayed(view));
1273 if (view->offset + lineno >= view->lines)
1276 line = &view->line[view->offset + lineno];
1279 line->selected = TRUE;
1280 view->ops->select(view, line);
1281 } else if (line->selected) {
1282 line->selected = FALSE;
1283 wmove(view->win, lineno, 0);
1284 wclrtoeol(view->win);
1287 scrollok(view->win, FALSE);
1288 draw_ok = view->ops->draw(view, line, lineno, selected);
1289 scrollok(view->win, TRUE);
1295 redraw_view_from(struct view *view, int lineno)
1297 assert(0 <= lineno && lineno < view->height);
1299 for (; lineno < view->height; lineno++) {
1300 if (!draw_view_line(view, lineno))
1304 redrawwin(view->win);
1305 wrefresh(view->win);
1309 redraw_view(struct view *view)
1312 redraw_view_from(view, 0);
1317 update_view_title(struct view *view)
1319 char buf[SIZEOF_STR];
1320 char state[SIZEOF_STR];
1321 size_t bufpos = 0, statelen = 0;
1323 assert(view_is_displayed(view));
1325 if (view->lines || view->pipe) {
1326 unsigned int view_lines = view->offset + view->height;
1327 unsigned int lines = view->lines
1328 ? MIN(view_lines, view->lines) * 100 / view->lines
1331 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1338 time_t secs = time(NULL) - view->start_time;
1340 /* Three git seconds are a long time ... */
1342 string_format_from(state, &statelen, " %lds", secs);
1346 string_format_from(buf, &bufpos, "[%s]", view->name);
1347 if (*view->ref && bufpos < view->width) {
1348 size_t refsize = strlen(view->ref);
1349 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1351 if (minsize < view->width)
1352 refsize = view->width - minsize + 7;
1353 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1356 if (statelen && bufpos < view->width) {
1357 string_format_from(buf, &bufpos, " %s", state);
1360 if (view == display[current_view])
1361 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1363 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1365 werase(view->title);
1366 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1367 wmove(view->title, 0, view->width - 1);
1368 wrefresh(view->title);
1372 resize_display(void)
1375 struct view *base = display[0];
1376 struct view *view = display[1] ? display[1] : display[0];
1378 /* Setup window dimensions */
1380 getmaxyx(stdscr, base->height, base->width);
1382 /* Make room for the status window. */
1386 /* Horizontal split. */
1387 view->width = base->width;
1388 view->height = SCALE_SPLIT_VIEW(base->height);
1389 base->height -= view->height;
1391 /* Make room for the title bar. */
1395 /* Make room for the title bar. */
1400 foreach_displayed_view (view, i) {
1402 view->win = newwin(view->height, 0, offset, 0);
1404 die("Failed to create %s view", view->name);
1406 scrollok(view->win, TRUE);
1408 view->title = newwin(1, 0, offset + view->height, 0);
1410 die("Failed to create title window");
1413 wresize(view->win, view->height, view->width);
1414 mvwin(view->win, offset, 0);
1415 mvwin(view->title, offset + view->height, 0);
1418 offset += view->height + 1;
1423 redraw_display(void)
1428 foreach_displayed_view (view, i) {
1430 update_view_title(view);
1435 update_display_cursor(struct view *view)
1437 /* Move the cursor to the right-most column of the cursor line.
1439 * XXX: This could turn out to be a bit expensive, but it ensures that
1440 * the cursor does not jump around. */
1442 wmove(view->win, view->lineno - view->offset, view->width - 1);
1443 wrefresh(view->win);
1451 /* Scrolling backend */
1453 do_scroll_view(struct view *view, int lines)
1455 bool redraw_current_line = FALSE;
1457 /* The rendering expects the new offset. */
1458 view->offset += lines;
1460 assert(0 <= view->offset && view->offset < view->lines);
1463 /* Move current line into the view. */
1464 if (view->lineno < view->offset) {
1465 view->lineno = view->offset;
1466 redraw_current_line = TRUE;
1467 } else if (view->lineno >= view->offset + view->height) {
1468 view->lineno = view->offset + view->height - 1;
1469 redraw_current_line = TRUE;
1472 assert(view->offset <= view->lineno && view->lineno < view->lines);
1474 /* Redraw the whole screen if scrolling is pointless. */
1475 if (view->height < ABS(lines)) {
1479 int line = lines > 0 ? view->height - lines : 0;
1480 int end = line + ABS(lines);
1482 wscrl(view->win, lines);
1484 for (; line < end; line++) {
1485 if (!draw_view_line(view, line))
1489 if (redraw_current_line)
1490 draw_view_line(view, view->lineno - view->offset);
1493 redrawwin(view->win);
1494 wrefresh(view->win);
1498 /* Scroll frontend */
1500 scroll_view(struct view *view, enum request request)
1504 assert(view_is_displayed(view));
1507 case REQ_SCROLL_PAGE_DOWN:
1508 lines = view->height;
1509 case REQ_SCROLL_LINE_DOWN:
1510 if (view->offset + lines > view->lines)
1511 lines = view->lines - view->offset;
1513 if (lines == 0 || view->offset + view->height >= view->lines) {
1514 report("Cannot scroll beyond the last line");
1519 case REQ_SCROLL_PAGE_UP:
1520 lines = view->height;
1521 case REQ_SCROLL_LINE_UP:
1522 if (lines > view->offset)
1523 lines = view->offset;
1526 report("Cannot scroll beyond the first line");
1534 die("request %d not handled in switch", request);
1537 do_scroll_view(view, lines);
1542 move_view(struct view *view, enum request request)
1544 int scroll_steps = 0;
1548 case REQ_MOVE_FIRST_LINE:
1549 steps = -view->lineno;
1552 case REQ_MOVE_LAST_LINE:
1553 steps = view->lines - view->lineno - 1;
1556 case REQ_MOVE_PAGE_UP:
1557 steps = view->height > view->lineno
1558 ? -view->lineno : -view->height;
1561 case REQ_MOVE_PAGE_DOWN:
1562 steps = view->lineno + view->height >= view->lines
1563 ? view->lines - view->lineno - 1 : view->height;
1575 die("request %d not handled in switch", request);
1578 if (steps <= 0 && view->lineno == 0) {
1579 report("Cannot move beyond the first line");
1582 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1583 report("Cannot move beyond the last line");
1587 /* Move the current line */
1588 view->lineno += steps;
1589 assert(0 <= view->lineno && view->lineno < view->lines);
1591 /* Check whether the view needs to be scrolled */
1592 if (view->lineno < view->offset ||
1593 view->lineno >= view->offset + view->height) {
1594 scroll_steps = steps;
1595 if (steps < 0 && -steps > view->offset) {
1596 scroll_steps = -view->offset;
1598 } else if (steps > 0) {
1599 if (view->lineno == view->lines - 1 &&
1600 view->lines > view->height) {
1601 scroll_steps = view->lines - view->offset - 1;
1602 if (scroll_steps >= view->height)
1603 scroll_steps -= view->height - 1;
1608 if (!view_is_displayed(view)) {
1609 view->offset += steps;
1610 view->ops->select(view, &view->line[view->lineno]);
1614 /* Repaint the old "current" line if we be scrolling */
1615 if (ABS(steps) < view->height)
1616 draw_view_line(view, view->lineno - steps - view->offset);
1619 do_scroll_view(view, scroll_steps);
1623 /* Draw the current line */
1624 draw_view_line(view, view->lineno - view->offset);
1626 redrawwin(view->win);
1627 wrefresh(view->win);
1636 static void search_view(struct view *view, enum request request);
1639 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1641 assert(view_is_displayed(view));
1643 if (!view->ops->grep(view, line))
1646 if (lineno - view->offset >= view->height) {
1647 view->offset = lineno;
1648 view->lineno = lineno;
1652 unsigned long old_lineno = view->lineno - view->offset;
1654 view->lineno = lineno;
1655 draw_view_line(view, old_lineno);
1657 draw_view_line(view, view->lineno - view->offset);
1658 redrawwin(view->win);
1659 wrefresh(view->win);
1662 report("Line %ld matches '%s'", lineno + 1, view->grep);
1667 find_next(struct view *view, enum request request)
1669 unsigned long lineno = view->lineno;
1674 report("No previous search");
1676 search_view(view, request);
1686 case REQ_SEARCH_BACK:
1695 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1696 lineno += direction;
1698 /* Note, lineno is unsigned long so will wrap around in which case it
1699 * will become bigger than view->lines. */
1700 for (; lineno < view->lines; lineno += direction) {
1701 struct line *line = &view->line[lineno];
1703 if (find_next_line(view, lineno, line))
1707 report("No match found for '%s'", view->grep);
1711 search_view(struct view *view, enum request request)
1716 regfree(view->regex);
1719 view->regex = calloc(1, sizeof(*view->regex));
1724 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1725 if (regex_err != 0) {
1726 char buf[SIZEOF_STR] = "unknown error";
1728 regerror(regex_err, view->regex, buf, sizeof(buf));
1729 report("Search failed: %s", buf);
1733 string_copy(view->grep, opt_search);
1735 find_next(view, request);
1739 * Incremental updating
1743 end_update(struct view *view)
1747 set_nonblocking_input(FALSE);
1748 if (view->pipe == stdin)
1756 begin_update(struct view *view)
1758 const char *id = view->id;
1764 string_copy(view->cmd, opt_cmd);
1766 /* When running random commands, the view ref could have become
1767 * invalid so clear it. */
1770 } else if (view == VIEW(REQ_VIEW_TREE)) {
1771 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1773 if (strcmp(view->vid, view->id))
1776 if (!string_format(view->cmd, format, id, opt_path))
1780 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1782 if (!string_format(view->cmd, format, id, id, id, id, id))
1786 /* Special case for the pager view. */
1788 view->pipe = opt_pipe;
1791 view->pipe = popen(view->cmd, "r");
1797 set_nonblocking_input(TRUE);
1802 string_copy(view->vid, id);
1807 for (i = 0; i < view->lines; i++)
1808 if (view->line[i].data)
1809 free(view->line[i].data);
1815 view->start_time = time(NULL);
1820 static struct line *
1821 realloc_lines(struct view *view, size_t line_size)
1823 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1829 view->line_size = line_size;
1834 update_view(struct view *view)
1836 char in_buffer[BUFSIZ];
1837 char out_buffer[BUFSIZ * 2];
1839 /* The number of lines to read. If too low it will cause too much
1840 * redrawing (and possible flickering), if too high responsiveness
1842 unsigned long lines = view->height;
1843 int redraw_from = -1;
1848 /* Only redraw if lines are visible. */
1849 if (view->offset + view->height >= view->lines)
1850 redraw_from = view->lines - view->offset;
1852 /* FIXME: This is probably not perfect for backgrounded views. */
1853 if (!realloc_lines(view, view->lines + lines))
1856 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1857 size_t linelen = strlen(line);
1860 line[linelen - 1] = 0;
1862 if (opt_iconv != ICONV_NONE) {
1864 size_t inlen = linelen;
1866 char *outbuf = out_buffer;
1867 size_t outlen = sizeof(out_buffer);
1871 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1872 if (ret != (size_t) -1) {
1874 linelen = strlen(out_buffer);
1878 if (!view->ops->read(view, line))
1888 lines = view->lines;
1889 for (digits = 0; lines; digits++)
1892 /* Keep the displayed view in sync with line number scaling. */
1893 if (digits != view->digits) {
1894 view->digits = digits;
1899 if (!view_is_displayed(view))
1902 if (view == VIEW(REQ_VIEW_TREE)) {
1903 /* Clear the view and redraw everything since the tree sorting
1904 * might have rearranged things. */
1907 } else if (redraw_from >= 0) {
1908 /* If this is an incremental update, redraw the previous line
1909 * since for commits some members could have changed when
1910 * loading the main view. */
1911 if (redraw_from > 0)
1914 /* Incrementally draw avoids flickering. */
1915 redraw_view_from(view, redraw_from);
1918 /* Update the title _after_ the redraw so that if the redraw picks up a
1919 * commit reference in view->ref it'll be available here. */
1920 update_view_title(view);
1923 if (ferror(view->pipe)) {
1924 report("Failed to read: %s", strerror(errno));
1927 } else if (feof(view->pipe)) {
1935 report("Allocation failure");
1947 static void open_help_view(struct view *view)
1950 int lines = ARRAY_SIZE(req_info) + 2;
1953 if (view->lines > 0)
1956 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1957 if (!req_info[i].request)
1960 view->line = calloc(lines, sizeof(*view->line));
1962 report("Allocation failure");
1966 view->ops->read(view, "Quick reference for tig keybindings:");
1968 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1971 if (!req_info[i].request) {
1972 view->ops->read(view, "");
1973 view->ops->read(view, req_info[i].help);
1977 key = get_key(req_info[i].request);
1978 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1981 view->ops->read(view, buf);
1986 OPEN_DEFAULT = 0, /* Use default view switching. */
1987 OPEN_SPLIT = 1, /* Split current view. */
1988 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1989 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1993 open_view(struct view *prev, enum request request, enum open_flags flags)
1995 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1996 bool split = !!(flags & OPEN_SPLIT);
1997 bool reload = !!(flags & OPEN_RELOAD);
1998 struct view *view = VIEW(request);
1999 int nviews = displayed_views();
2000 struct view *base_view = display[0];
2002 if (view == prev && nviews == 1 && !reload) {
2003 report("Already in %s view", view->name);
2007 if (view == VIEW(REQ_VIEW_HELP)) {
2008 open_help_view(view);
2010 } else if ((reload || strcmp(view->vid, view->id)) &&
2011 !begin_update(view)) {
2012 report("Failed to load %s view", view->name);
2021 /* Maximize the current view. */
2022 memset(display, 0, sizeof(display));
2024 display[current_view] = view;
2027 /* Resize the view when switching between split- and full-screen,
2028 * or when switching between two different full-screen views. */
2029 if (nviews != displayed_views() ||
2030 (nviews == 1 && base_view != display[0]))
2033 if (split && prev->lineno - prev->offset >= prev->height) {
2034 /* Take the title line into account. */
2035 int lines = prev->lineno - prev->offset - prev->height + 1;
2037 /* Scroll the view that was split if the current line is
2038 * outside the new limited view. */
2039 do_scroll_view(prev, lines);
2042 if (prev && view != prev) {
2043 if (split && !backgrounded) {
2044 /* "Blur" the previous view. */
2045 update_view_title(prev);
2048 view->parent = prev;
2051 if (view->pipe && view->lines == 0) {
2052 /* Clear the old view and let the incremental updating refill
2061 /* If the view is backgrounded the above calls to report()
2062 * won't redraw the view title. */
2064 update_view_title(view);
2069 * User request switch noodle
2073 view_driver(struct view *view, enum request request)
2080 case REQ_MOVE_PAGE_UP:
2081 case REQ_MOVE_PAGE_DOWN:
2082 case REQ_MOVE_FIRST_LINE:
2083 case REQ_MOVE_LAST_LINE:
2084 move_view(view, request);
2087 case REQ_SCROLL_LINE_DOWN:
2088 case REQ_SCROLL_LINE_UP:
2089 case REQ_SCROLL_PAGE_DOWN:
2090 case REQ_SCROLL_PAGE_UP:
2091 scroll_view(view, request);
2096 report("No file chosen, press 't' to open tree view");
2105 case REQ_VIEW_PAGER:
2106 open_view(view, request, OPEN_DEFAULT);
2111 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2113 if ((view == VIEW(REQ_VIEW_DIFF) &&
2114 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2115 (view == VIEW(REQ_VIEW_BLOB) &&
2116 view->parent == VIEW(REQ_VIEW_TREE))) {
2117 view = view->parent;
2118 move_view(view, request);
2119 if (view_is_displayed(view))
2120 update_view_title(view);
2122 move_view(view, request);
2129 report("Nothing to enter");
2132 return view->ops->enter(view, &view->line[view->lineno]);
2136 int nviews = displayed_views();
2137 int next_view = (current_view + 1) % nviews;
2139 if (next_view == current_view) {
2140 report("Only one view is displayed");
2144 current_view = next_view;
2145 /* Blur out the title of the previous view. */
2146 update_view_title(view);
2150 case REQ_TOGGLE_LINENO:
2151 opt_line_number = !opt_line_number;
2155 case REQ_TOGGLE_REV_GRAPH:
2156 opt_rev_graph = !opt_rev_graph;
2161 /* Always reload^Wrerun commands from the prompt. */
2162 open_view(view, opt_request, OPEN_RELOAD);
2166 case REQ_SEARCH_BACK:
2167 search_view(view, request);
2172 find_next(view, request);
2175 case REQ_STOP_LOADING:
2176 for (i = 0; i < ARRAY_SIZE(views); i++) {
2179 report("Stopped loading the %s view", view->name),
2184 case REQ_SHOW_VERSION:
2185 report("%s (built %s)", VERSION, __DATE__);
2188 case REQ_SCREEN_RESIZE:
2191 case REQ_SCREEN_REDRAW:
2199 case REQ_VIEW_CLOSE:
2200 /* XXX: Mark closed views by letting view->parent point to the
2201 * view itself. Parents to closed view should never be
2204 view->parent->parent != view->parent) {
2205 memset(display, 0, sizeof(display));
2207 display[current_view] = view->parent;
2208 view->parent = view;
2218 /* An unknown key will show most commonly used commands. */
2219 report("Unknown key, press 'h' for help");
2232 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2234 char *text = line->data;
2235 enum line_type type = line->type;
2236 int textlen = strlen(text);
2239 wmove(view->win, lineno, 0);
2243 wchgat(view->win, -1, 0, type, NULL);
2246 attr = get_line_attr(type);
2247 wattrset(view->win, attr);
2249 if (opt_line_number || opt_tab_size < TABSIZE) {
2250 static char spaces[] = " ";
2251 int col_offset = 0, col = 0;
2253 if (opt_line_number) {
2254 unsigned long real_lineno = view->offset + lineno + 1;
2256 if (real_lineno == 1 ||
2257 (real_lineno % opt_num_interval) == 0) {
2258 wprintw(view->win, "%.*d", view->digits, real_lineno);
2261 waddnstr(view->win, spaces,
2262 MIN(view->digits, STRING_SIZE(spaces)));
2264 waddstr(view->win, ": ");
2265 col_offset = view->digits + 2;
2268 while (text && col_offset + col < view->width) {
2269 int cols_max = view->width - col_offset - col;
2273 if (*text == '\t') {
2275 assert(sizeof(spaces) > TABSIZE);
2277 cols = opt_tab_size - (col % opt_tab_size);
2280 text = strchr(text, '\t');
2281 cols = line ? text - pos : strlen(pos);
2284 waddnstr(view->win, pos, MIN(cols, cols_max));
2289 int col = 0, pos = 0;
2291 for (; pos < textlen && col < view->width; pos++, col++)
2292 if (text[pos] == '\t')
2293 col += TABSIZE - (col % TABSIZE) - 1;
2295 waddnstr(view->win, text, pos);
2302 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2304 char refbuf[SIZEOF_STR];
2308 if (!string_format(refbuf, "git describe %s", commit_id))
2311 pipe = popen(refbuf, "r");
2315 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2316 ref = chomp_string(ref);
2322 /* This is the only fatal call, since it can "corrupt" the buffer. */
2323 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2330 add_pager_refs(struct view *view, struct line *line)
2332 char buf[SIZEOF_STR];
2333 char *commit_id = line->data + STRING_SIZE("commit ");
2335 size_t bufpos = 0, refpos = 0;
2336 const char *sep = "Refs: ";
2337 bool is_tag = FALSE;
2339 assert(line->type == LINE_COMMIT);
2341 refs = get_refs(commit_id);
2343 if (view == VIEW(REQ_VIEW_DIFF))
2344 goto try_add_describe_ref;
2349 struct ref *ref = refs[refpos];
2350 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2352 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2357 } while (refs[refpos++]->next);
2359 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2360 try_add_describe_ref:
2361 /* Add <tag>-g<commit_id> "fake" reference. */
2362 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2369 if (!realloc_lines(view, view->line_size + 1))
2372 line = &view->line[view->lines];
2373 line->data = strdup(buf);
2377 line->type = LINE_PP_REFS;
2382 pager_read(struct view *view, char *data)
2384 struct line *line = &view->line[view->lines];
2386 line->data = strdup(data);
2390 line->type = get_line_type(line->data);
2393 if (line->type == LINE_COMMIT &&
2394 (view == VIEW(REQ_VIEW_DIFF) ||
2395 view == VIEW(REQ_VIEW_LOG)))
2396 add_pager_refs(view, line);
2402 pager_enter(struct view *view, struct line *line)
2406 if (line->type == LINE_COMMIT &&
2407 (view == VIEW(REQ_VIEW_LOG) ||
2408 view == VIEW(REQ_VIEW_PAGER))) {
2409 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2413 /* Always scroll the view even if it was split. That way
2414 * you can use Enter to scroll through the log view and
2415 * split open each commit diff. */
2416 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2418 /* FIXME: A minor workaround. Scrolling the view will call report("")
2419 * but if we are scrolling a non-current view this won't properly
2420 * update the view title. */
2422 update_view_title(view);
2428 pager_grep(struct view *view, struct line *line)
2431 char *text = line->data;
2436 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2443 pager_select(struct view *view, struct line *line)
2445 if (line->type == LINE_COMMIT) {
2446 char *text = line->data;
2448 string_copy(view->ref, text + STRING_SIZE("commit "));
2449 string_copy(ref_commit, view->ref);
2453 static struct view_ops pager_ops = {
2467 /* Parse output from git-ls-tree(1):
2469 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2470 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2471 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2472 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2475 #define SIZEOF_TREE_ATTR \
2476 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2478 #define TREE_UP_FORMAT "040000 tree %s\t.."
2481 tree_compare_entry(enum line_type type1, char *name1,
2482 enum line_type type2, char *name2)
2484 if (type1 != type2) {
2485 if (type1 == LINE_TREE_DIR)
2490 return strcmp(name1, name2);
2494 tree_read(struct view *view, char *text)
2496 size_t textlen = strlen(text);
2497 char buf[SIZEOF_STR];
2499 enum line_type type;
2500 bool first_read = view->lines == 0;
2502 if (textlen <= SIZEOF_TREE_ATTR)
2505 type = text[STRING_SIZE("100644 ")] == 't'
2506 ? LINE_TREE_DIR : LINE_TREE_FILE;
2509 /* Add path info line */
2510 if (string_format(buf, "Directory path /%s", opt_path) &&
2511 realloc_lines(view, view->line_size + 1) &&
2512 pager_read(view, buf))
2513 view->line[view->lines - 1].type = LINE_DEFAULT;
2517 /* Insert "link" to parent directory. */
2519 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2520 realloc_lines(view, view->line_size + 1) &&
2521 pager_read(view, buf))
2522 view->line[view->lines - 1].type = LINE_TREE_DIR;
2527 /* Strip the path part ... */
2529 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2530 size_t striplen = strlen(opt_path);
2531 char *path = text + SIZEOF_TREE_ATTR;
2533 if (pathlen > striplen)
2534 memmove(path, path + striplen,
2535 pathlen - striplen + 1);
2538 /* Skip "Directory ..." and ".." line. */
2539 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2540 struct line *line = &view->line[pos];
2541 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2542 char *path2 = text + SIZEOF_TREE_ATTR;
2543 int cmp = tree_compare_entry(line->type, path1, type, path2);
2548 text = strdup(text);
2552 if (view->lines > pos)
2553 memmove(&view->line[pos + 1], &view->line[pos],
2554 (view->lines - pos) * sizeof(*line));
2556 line = &view->line[pos];
2563 if (!pager_read(view, text))
2566 /* Move the current line to the first tree entry. */
2570 view->line[view->lines - 1].type = type;
2575 tree_enter(struct view *view, struct line *line)
2577 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2578 enum request request;
2580 switch (line->type) {
2582 /* Depending on whether it is a subdir or parent (updir?) link
2583 * mangle the path buffer. */
2584 if (line == &view->line[1] && *opt_path) {
2585 size_t path_len = strlen(opt_path);
2586 char *dirsep = opt_path + path_len - 1;
2588 while (dirsep > opt_path && dirsep[-1] != '/')
2594 size_t pathlen = strlen(opt_path);
2595 size_t origlen = pathlen;
2596 char *data = line->data;
2597 char *basename = data + SIZEOF_TREE_ATTR;
2599 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2600 opt_path[origlen] = 0;
2605 /* Trees and subtrees share the same ID, so they are not not
2606 * unique like blobs. */
2607 flags |= OPEN_RELOAD;
2608 request = REQ_VIEW_TREE;
2611 case LINE_TREE_FILE:
2612 request = REQ_VIEW_BLOB;
2619 open_view(view, request, flags);
2625 tree_select(struct view *view, struct line *line)
2627 char *text = line->data;
2629 text += STRING_SIZE("100644 blob ");
2631 if (line->type == LINE_TREE_FILE) {
2632 string_ncopy(ref_blob, text, 40);
2633 /* Also update the blob view's ref, since all there must always
2635 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2637 } else if (line->type != LINE_TREE_DIR) {
2641 string_ncopy(view->ref, text, 40);
2644 static struct view_ops tree_ops = {
2654 blob_read(struct view *view, char *line)
2656 bool state = pager_read(view, line);
2659 view->line[view->lines - 1].type = LINE_DEFAULT;
2664 static struct view_ops blob_ops = {
2679 char id[SIZEOF_REV]; /* SHA1 ID. */
2680 char title[75]; /* First line of the commit message. */
2681 char author[75]; /* Author of the commit. */
2682 struct tm time; /* Date from the author ident. */
2683 struct ref **refs; /* Repository references. */
2684 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2685 size_t graph_size; /* The width of the graph array. */
2689 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2691 char buf[DATE_COLS + 1];
2692 struct commit *commit = line->data;
2693 enum line_type type;
2699 if (!*commit->author)
2702 wmove(view->win, lineno, col);
2706 wattrset(view->win, get_line_attr(type));
2707 wchgat(view->win, -1, 0, type, NULL);
2710 type = LINE_MAIN_COMMIT;
2711 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2714 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2715 waddnstr(view->win, buf, timelen);
2716 waddstr(view->win, " ");
2719 wmove(view->win, lineno, col);
2720 if (type != LINE_CURSOR)
2721 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2724 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2726 authorlen = strlen(commit->author);
2727 if (authorlen > AUTHOR_COLS - 2) {
2728 authorlen = AUTHOR_COLS - 2;
2734 waddnstr(view->win, commit->author, authorlen);
2735 if (type != LINE_CURSOR)
2736 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2737 waddch(view->win, '~');
2739 waddstr(view->win, commit->author);
2743 if (type != LINE_CURSOR)
2744 wattrset(view->win, A_NORMAL);
2746 if (opt_rev_graph && commit->graph_size) {
2749 wmove(view->win, lineno, col);
2750 /* Using waddch() instead of waddnstr() ensures that
2751 * they'll be rendered correctly for the cursor line. */
2752 for (i = 0; i < commit->graph_size; i++)
2753 waddch(view->win, commit->graph[i]);
2755 col += commit->graph_size + 1;
2758 wmove(view->win, lineno, col);
2764 if (type == LINE_CURSOR)
2766 else if (commit->refs[i]->tag)
2767 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2769 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2770 waddstr(view->win, "[");
2771 waddstr(view->win, commit->refs[i]->name);
2772 waddstr(view->win, "]");
2773 if (type != LINE_CURSOR)
2774 wattrset(view->win, A_NORMAL);
2775 waddstr(view->win, " ");
2776 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2777 } while (commit->refs[i++]->next);
2780 if (type != LINE_CURSOR)
2781 wattrset(view->win, get_line_attr(type));
2784 int titlelen = strlen(commit->title);
2786 if (col + titlelen > view->width)
2787 titlelen = view->width - col;
2789 waddnstr(view->win, commit->title, titlelen);
2795 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2797 main_read(struct view *view, char *line)
2799 enum line_type type = get_line_type(line);
2800 struct commit *commit = view->lines
2801 ? view->line[view->lines - 1].data : NULL;
2805 commit = calloc(1, sizeof(struct commit));
2809 line += STRING_SIZE("commit ");
2811 view->line[view->lines++].data = commit;
2812 string_copy(commit->id, line);
2813 commit->refs = get_refs(commit->id);
2814 commit->graph[commit->graph_size++] = ACS_LTEE;
2819 char *ident = line + STRING_SIZE("author ");
2820 char *end = strchr(ident, '<');
2826 char *email = end + 1;
2828 for (; end > ident && isspace(end[-1]); end--) ;
2830 if (end == ident && *email) {
2832 end = strchr(ident, '>');
2833 for (; end > ident && isspace(end[-1]); end--) ;
2838 /* End is NULL or ident meaning there's no author. */
2842 string_copy(commit->author, ident);
2844 /* Parse epoch and timezone */
2846 char *secs = strchr(end + 1, '>');
2850 if (!secs || secs[1] != ' ')
2854 time = (time_t) atol(secs);
2855 zone = strchr(secs, ' ');
2856 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2860 tz = ('0' - zone[1]) * 60 * 60 * 10;
2861 tz += ('0' - zone[2]) * 60 * 60;
2862 tz += ('0' - zone[3]) * 60;
2863 tz += ('0' - zone[4]) * 60;
2870 gmtime_r(&time, &commit->time);
2878 /* Fill in the commit title if it has not already been set. */
2879 if (commit->title[0])
2882 /* Require titles to start with a non-space character at the
2883 * offset used by git log. */
2884 /* FIXME: More gracefull handling of titles; append "..." to
2885 * shortened titles, etc. */
2886 if (strncmp(line, " ", 4) ||
2890 string_copy(commit->title, line + 4);
2897 main_enter(struct view *view, struct line *line)
2899 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2901 open_view(view, REQ_VIEW_DIFF, flags);
2906 main_grep(struct view *view, struct line *line)
2908 struct commit *commit = line->data;
2909 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2910 char buf[DATE_COLS + 1];
2913 for (state = S_TITLE; state < S_END; state++) {
2917 case S_TITLE: text = commit->title; break;
2918 case S_AUTHOR: text = commit->author; break;
2920 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2929 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2937 main_select(struct view *view, struct line *line)
2939 struct commit *commit = line->data;
2941 string_copy(view->ref, commit->id);
2942 string_copy(ref_commit, view->ref);
2945 static struct view_ops main_ops = {
2956 * Unicode / UTF-8 handling
2958 * NOTE: Much of the following code for dealing with unicode is derived from
2959 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2960 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2963 /* I've (over)annotated a lot of code snippets because I am not entirely
2964 * confident that the approach taken by this small UTF-8 interface is correct.
2968 unicode_width(unsigned long c)
2971 (c <= 0x115f /* Hangul Jamo */
2974 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2976 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2977 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2978 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2979 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2980 || (c >= 0xffe0 && c <= 0xffe6)
2981 || (c >= 0x20000 && c <= 0x2fffd)
2982 || (c >= 0x30000 && c <= 0x3fffd)))
2988 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2989 * Illegal bytes are set one. */
2990 static const unsigned char utf8_bytes[256] = {
2991 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,
2992 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,
2993 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,
2994 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,
2995 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,
2996 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,
2997 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,
2998 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,
3001 /* Decode UTF-8 multi-byte representation into a unicode character. */
3002 static inline unsigned long
3003 utf8_to_unicode(const char *string, size_t length)
3005 unsigned long unicode;
3009 unicode = string[0];
3012 unicode = (string[0] & 0x1f) << 6;
3013 unicode += (string[1] & 0x3f);
3016 unicode = (string[0] & 0x0f) << 12;
3017 unicode += ((string[1] & 0x3f) << 6);
3018 unicode += (string[2] & 0x3f);
3021 unicode = (string[0] & 0x0f) << 18;
3022 unicode += ((string[1] & 0x3f) << 12);
3023 unicode += ((string[2] & 0x3f) << 6);
3024 unicode += (string[3] & 0x3f);
3027 unicode = (string[0] & 0x0f) << 24;
3028 unicode += ((string[1] & 0x3f) << 18);
3029 unicode += ((string[2] & 0x3f) << 12);
3030 unicode += ((string[3] & 0x3f) << 6);
3031 unicode += (string[4] & 0x3f);
3034 unicode = (string[0] & 0x01) << 30;
3035 unicode += ((string[1] & 0x3f) << 24);
3036 unicode += ((string[2] & 0x3f) << 18);
3037 unicode += ((string[3] & 0x3f) << 12);
3038 unicode += ((string[4] & 0x3f) << 6);
3039 unicode += (string[5] & 0x3f);
3042 die("Invalid unicode length");
3045 /* Invalid characters could return the special 0xfffd value but NUL
3046 * should be just as good. */
3047 return unicode > 0xffff ? 0 : unicode;
3050 /* Calculates how much of string can be shown within the given maximum width
3051 * and sets trimmed parameter to non-zero value if all of string could not be
3054 * Additionally, adds to coloffset how many many columns to move to align with
3055 * the expected position. Takes into account how multi-byte and double-width
3056 * characters will effect the cursor position.
3058 * Returns the number of bytes to output from string to satisfy max_width. */
3060 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3062 const char *start = string;
3063 const char *end = strchr(string, '\0');
3069 while (string < end) {
3070 int c = *(unsigned char *) string;
3071 unsigned char bytes = utf8_bytes[c];
3073 unsigned long unicode;
3075 if (string + bytes > end)
3078 /* Change representation to figure out whether
3079 * it is a single- or double-width character. */
3081 unicode = utf8_to_unicode(string, bytes);
3082 /* FIXME: Graceful handling of invalid unicode character. */
3086 ucwidth = unicode_width(unicode);
3088 if (width > max_width) {
3093 /* The column offset collects the differences between the
3094 * number of bytes encoding a character and the number of
3095 * columns will be used for rendering said character.
3097 * So if some character A is encoded in 2 bytes, but will be
3098 * represented on the screen using only 1 byte this will and up
3099 * adding 1 to the multi-byte column offset.
3101 * Assumes that no double-width character can be encoding in
3102 * less than two bytes. */
3103 if (bytes > ucwidth)
3104 mbwidth += bytes - ucwidth;
3109 *coloffset += mbwidth;
3111 return string - start;
3119 /* Whether or not the curses interface has been initialized. */
3120 static bool cursed = FALSE;
3122 /* The status window is used for polling keystrokes. */
3123 static WINDOW *status_win;
3125 /* Update status and title window. */
3127 report(const char *msg, ...)
3129 static bool empty = TRUE;
3130 struct view *view = display[current_view];
3132 if (!empty || *msg) {
3135 va_start(args, msg);
3138 wmove(status_win, 0, 0);
3140 vwprintw(status_win, msg, args);
3145 wrefresh(status_win);
3150 update_view_title(view);
3151 update_display_cursor(view);
3154 /* Controls when nodelay should be in effect when polling user input. */
3156 set_nonblocking_input(bool loading)
3158 static unsigned int loading_views;
3160 if ((loading == FALSE && loading_views-- == 1) ||
3161 (loading == TRUE && loading_views++ == 0))
3162 nodelay(status_win, loading);
3170 /* Initialize the curses library */
3171 if (isatty(STDIN_FILENO)) {
3172 cursed = !!initscr();
3174 /* Leave stdin and stdout alone when acting as a pager. */
3175 FILE *io = fopen("/dev/tty", "r+");
3178 die("Failed to open /dev/tty");
3179 cursed = !!newterm(NULL, io, io);
3183 die("Failed to initialize curses");
3185 nonl(); /* Tell curses not to do NL->CR/NL on output */
3186 cbreak(); /* Take input chars one at a time, no wait for \n */
3187 noecho(); /* Don't echo input */
3188 leaveok(stdscr, TRUE);
3193 getmaxyx(stdscr, y, x);
3194 status_win = newwin(1, 0, y - 1, 0);
3196 die("Failed to create status window");
3198 /* Enable keyboard mapping */
3199 keypad(status_win, TRUE);
3200 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3204 read_prompt(const char *prompt)
3206 enum { READING, STOP, CANCEL } status = READING;
3207 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3210 while (status == READING) {
3214 foreach_view (view, i)
3217 report("%s%.*s", prompt, pos, buf);
3218 /* Refresh, accept single keystroke of input */
3219 key = wgetch(status_win);
3224 status = pos ? STOP : CANCEL;
3242 if (pos >= sizeof(buf)) {
3243 report("Input string too long");
3248 buf[pos++] = (char) key;
3252 if (status == CANCEL) {
3253 /* Clear the status window */
3264 * Repository references
3267 static struct ref *refs;
3268 static size_t refs_size;
3270 /* Id <-> ref store */
3271 static struct ref ***id_refs;
3272 static size_t id_refs_size;
3274 static struct ref **
3277 struct ref ***tmp_id_refs;
3278 struct ref **ref_list = NULL;
3279 size_t ref_list_size = 0;
3282 for (i = 0; i < id_refs_size; i++)
3283 if (!strcmp(id, id_refs[i][0]->id))
3286 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3290 id_refs = tmp_id_refs;
3292 for (i = 0; i < refs_size; i++) {
3295 if (strcmp(id, refs[i].id))
3298 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3306 if (ref_list_size > 0)
3307 ref_list[ref_list_size - 1]->next = 1;
3308 ref_list[ref_list_size] = &refs[i];
3310 /* XXX: The properties of the commit chains ensures that we can
3311 * safely modify the shared ref. The repo references will
3312 * always be similar for the same id. */
3313 ref_list[ref_list_size]->next = 0;
3318 id_refs[id_refs_size++] = ref_list;
3324 read_ref(char *id, int idlen, char *name, int namelen)
3329 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3330 /* Commits referenced by tags has "^{}" appended. */
3331 if (name[namelen - 1] != '}')
3334 while (namelen > 0 && name[namelen] != '^')
3338 namelen -= STRING_SIZE("refs/tags/");
3339 name += STRING_SIZE("refs/tags/");
3341 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3342 namelen -= STRING_SIZE("refs/heads/");
3343 name += STRING_SIZE("refs/heads/");
3345 } else if (!strcmp(name, "HEAD")) {
3349 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3353 ref = &refs[refs_size++];
3354 ref->name = malloc(namelen + 1);
3358 strncpy(ref->name, name, namelen);
3359 ref->name[namelen] = 0;
3361 string_copy(ref->id, id);
3369 const char *cmd_env = getenv("TIG_LS_REMOTE");
3370 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3372 return read_properties(popen(cmd, "r"), "\t", read_ref);
3376 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3378 if (!strcmp(name, "i18n.commitencoding"))
3379 string_copy(opt_encoding, value);
3385 load_repo_config(void)
3387 return read_properties(popen("git repo-config --list", "r"),
3388 "=", read_repo_config_option);
3392 read_properties(FILE *pipe, const char *separators,
3393 int (*read_property)(char *, int, char *, int))
3395 char buffer[BUFSIZ];
3402 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3407 name = chomp_string(name);
3408 namelen = strcspn(name, separators);
3410 if (name[namelen]) {
3412 value = chomp_string(name + namelen + 1);
3413 valuelen = strlen(value);
3420 state = read_property(name, namelen, value, valuelen);
3423 if (state != ERR && ferror(pipe))
3436 static void __NORETURN
3439 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3445 static void __NORETURN
3446 die(const char *err, ...)
3452 va_start(args, err);
3453 fputs("tig: ", stderr);
3454 vfprintf(stderr, err, args);
3455 fputs("\n", stderr);
3462 main(int argc, char *argv[])
3465 enum request request;
3468 signal(SIGINT, quit);
3470 if (setlocale(LC_ALL, "")) {
3471 string_copy(opt_codeset, nl_langinfo(CODESET));
3474 if (load_options() == ERR)
3475 die("Failed to load user config.");
3477 /* Load the repo config file so options can be overwritten from
3478 * the command line. */
3479 if (load_repo_config() == ERR)
3480 die("Failed to load repo config.");
3482 if (!parse_options(argc, argv))
3485 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3486 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3487 if (opt_iconv == ICONV_NONE)
3488 die("Failed to initialize character set conversion");
3491 if (load_refs() == ERR)
3492 die("Failed to load refs.");
3494 /* Require a git repository unless when running in pager mode. */
3495 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3496 die("Not a git repository");
3498 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3499 view->cmd_env = getenv(view->cmd_env);
3501 request = opt_request;
3505 while (view_driver(display[current_view], request)) {
3509 foreach_view (view, i)
3512 /* Refresh, accept single keystroke of input */
3513 key = wgetch(status_win);
3515 request = get_keybinding(display[current_view]->keymap, key);
3517 /* Some low-level request handling. This keeps access to
3518 * status_win restricted. */
3522 char *cmd = read_prompt(":");
3524 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3525 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3526 opt_request = REQ_VIEW_DIFF;
3528 opt_request = REQ_VIEW_PAGER;
3537 case REQ_SEARCH_BACK:
3539 const char *prompt = request == REQ_SEARCH
3541 char *search = read_prompt(prompt);
3544 string_copy(opt_search, search);
3549 case REQ_SCREEN_RESIZE:
3553 getmaxyx(stdscr, height, width);
3555 /* Resize the status view and let the view driver take
3556 * care of resizing the displayed views. */
3557 wresize(status_win, 1, width);
3558 mvwin(status_win, height - 1, 0);
3559 wrefresh(status_win);