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-0.5.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, "log") ||
455 !strcmp(opt, "diff") ||
456 !strcmp(opt, "show")) {
457 opt_request = opt[0] == 'l'
458 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
462 if (opt[0] && opt[0] != '-')
465 if (!strcmp(opt, "-l")) {
466 opt_request = REQ_VIEW_LOG;
470 if (!strcmp(opt, "-d")) {
471 opt_request = REQ_VIEW_DIFF;
475 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
476 opt_line_number = TRUE;
480 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
481 opt_tab_size = MIN(opt_tab_size, TABSIZE);
485 if (check_option(opt, 'v', "version", OPT_NONE)) {
486 printf("tig version %s\n", VERSION);
490 if (check_option(opt, 'h', "help", OPT_NONE)) {
495 if (!strcmp(opt, "--")) {
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 /* Using the ncurses SIGWINCH handler. */
734 { KEY_RESIZE, REQ_SCREEN_RESIZE },
737 #define KEYMAP_INFO \
748 #define KEYMAP_(name) KEYMAP_##name
753 static struct int_map keymap_table[] = {
754 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
759 #define set_keymap(map, name) \
760 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
762 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
765 add_keybinding(enum keymap keymap, enum request request, int key)
767 struct keybinding *keybinding;
769 keybinding = calloc(1, sizeof(*keybinding));
771 die("Failed to allocate keybinding");
773 keybinding->alias = key;
774 keybinding->request = request;
775 keybinding->next = keybindings[keymap];
776 keybindings[keymap] = keybinding;
779 /* Looks for a key binding first in the given map, then in the generic map, and
780 * lastly in the default keybindings. */
782 get_keybinding(enum keymap keymap, int key)
784 struct keybinding *kbd;
787 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
788 if (kbd->alias == key)
791 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
792 if (kbd->alias == key)
795 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
796 if (default_keybindings[i].alias == key)
797 return default_keybindings[i].request;
799 return (enum request) key;
808 static struct key key_table[] = {
809 { "Enter", KEY_RETURN },
811 { "Backspace", KEY_BACKSPACE },
813 { "Escape", KEY_ESC },
814 { "Left", KEY_LEFT },
815 { "Right", KEY_RIGHT },
817 { "Down", KEY_DOWN },
818 { "Insert", KEY_IC },
819 { "Delete", KEY_DC },
821 { "Home", KEY_HOME },
823 { "PageUp", KEY_PPAGE },
824 { "PageDown", KEY_NPAGE },
834 { "F10", KEY_F(10) },
835 { "F11", KEY_F(11) },
836 { "F12", KEY_F(12) },
840 get_key_value(const char *name)
844 for (i = 0; i < ARRAY_SIZE(key_table); i++)
845 if (!strcasecmp(key_table[i].name, name))
846 return key_table[i].value;
848 if (strlen(name) == 1 && isprint(*name))
855 get_key(enum request request)
857 static char buf[BUFSIZ];
858 static char key_char[] = "'X'";
865 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
866 struct keybinding *keybinding = &default_keybindings[i];
870 if (keybinding->request != request)
873 for (key = 0; key < ARRAY_SIZE(key_table); key++)
874 if (key_table[key].value == keybinding->alias)
875 seq = key_table[key].name;
878 keybinding->alias < 127 &&
879 isprint(keybinding->alias)) {
880 key_char[1] = (char) keybinding->alias;
887 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
888 return "Too many keybindings!";
897 * User config file handling.
900 static struct int_map color_map[] = {
901 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
913 #define set_color(color, name) \
914 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
916 static struct int_map attr_map[] = {
917 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
927 #define set_attribute(attr, name) \
928 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
930 static int config_lineno;
931 static bool config_errors;
932 static char *config_msg;
934 /* Wants: object fgcolor bgcolor [attr] */
936 option_color_command(int argc, char *argv[])
938 struct line_info *info;
940 if (argc != 3 && argc != 4) {
941 config_msg = "Wrong number of arguments given to color command";
945 info = get_line_info(argv[0], strlen(argv[0]));
947 config_msg = "Unknown color name";
951 if (set_color(&info->fg, argv[1]) == ERR ||
952 set_color(&info->bg, argv[2]) == ERR) {
953 config_msg = "Unknown color";
957 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
958 config_msg = "Unknown attribute";
965 /* Wants: name = value */
967 option_set_command(int argc, char *argv[])
970 config_msg = "Wrong number of arguments given to set command";
974 if (strcmp(argv[1], "=")) {
975 config_msg = "No value assigned";
979 if (!strcmp(argv[0], "show-rev-graph")) {
980 opt_rev_graph = (!strcmp(argv[2], "1") ||
981 !strcmp(argv[2], "true") ||
982 !strcmp(argv[2], "yes"));
986 if (!strcmp(argv[0], "line-number-interval")) {
987 opt_num_interval = atoi(argv[2]);
991 if (!strcmp(argv[0], "tab-size")) {
992 opt_tab_size = atoi(argv[2]);
996 if (!strcmp(argv[0], "commit-encoding")) {
998 int delimiter = *arg;
1001 switch (delimiter) {
1004 for (arg++, i = 0; arg[i]; i++)
1005 if (arg[i] == delimiter) {
1010 string_copy(opt_encoding, arg);
1015 config_msg = "Unknown variable name";
1019 /* Wants: mode request key */
1021 option_bind_command(int argc, char *argv[])
1023 enum request request;
1028 config_msg = "Wrong number of arguments given to bind command";
1032 if (set_keymap(&keymap, argv[0]) == ERR) {
1033 config_msg = "Unknown key map";
1037 key = get_key_value(argv[1]);
1039 config_msg = "Unknown key";
1043 request = get_request(argv[2]);
1044 if (request == REQ_UNKNOWN) {
1045 config_msg = "Unknown request name";
1049 add_keybinding(keymap, request, key);
1055 set_option(char *opt, char *value)
1062 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1063 argv[argc++] = value;
1070 while (isspace(*value))
1074 if (!strcmp(opt, "color"))
1075 return option_color_command(argc, argv);
1077 if (!strcmp(opt, "set"))
1078 return option_set_command(argc, argv);
1080 if (!strcmp(opt, "bind"))
1081 return option_bind_command(argc, argv);
1083 config_msg = "Unknown option command";
1088 read_option(char *opt, int optlen, char *value, int valuelen)
1093 config_msg = "Internal error";
1095 /* Check for comment markers, since read_properties() will
1096 * only ensure opt and value are split at first " \t". */
1097 optlen = strcspn(opt, "#");
1101 if (opt[optlen] != 0) {
1102 config_msg = "No option value";
1106 /* Look for comment endings in the value. */
1107 int len = strcspn(value, "#");
1109 if (len < valuelen) {
1111 value[valuelen] = 0;
1114 status = set_option(opt, value);
1117 if (status == ERR) {
1118 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1119 config_lineno, optlen, opt, config_msg);
1120 config_errors = TRUE;
1123 /* Always keep going if errors are encountered. */
1130 char *home = getenv("HOME");
1131 char buf[SIZEOF_STR];
1135 config_errors = FALSE;
1137 if (!home || !string_format(buf, "%s/.tigrc", home))
1140 /* It's ok that the file doesn't exist. */
1141 file = fopen(buf, "r");
1145 if (read_properties(file, " \t", read_option) == ERR ||
1146 config_errors == TRUE)
1147 fprintf(stderr, "Errors while loading %s.\n", buf);
1160 /* The display array of active views and the index of the current view. */
1161 static struct view *display[2];
1162 static unsigned int current_view;
1164 /* Reading from the prompt? */
1165 static bool input_mode = FALSE;
1167 #define foreach_displayed_view(view, i) \
1168 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1170 #define displayed_views() (display[1] != NULL ? 2 : 1)
1172 /* Current head and commit ID */
1173 static char ref_blob[SIZEOF_REF] = "";
1174 static char ref_commit[SIZEOF_REF] = "HEAD";
1175 static char ref_head[SIZEOF_REF] = "HEAD";
1178 const char *name; /* View name */
1179 const char *cmd_fmt; /* Default command line format */
1180 const char *cmd_env; /* Command line set via environment */
1181 const char *id; /* Points to either of ref_{head,commit,blob} */
1183 struct view_ops *ops; /* View operations */
1185 enum keymap keymap; /* What keymap does this view have */
1187 char cmd[SIZEOF_STR]; /* Command buffer */
1188 char ref[SIZEOF_REF]; /* Hovered commit reference */
1189 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1191 int height, width; /* The width and height of the main window */
1192 WINDOW *win; /* The main window */
1193 WINDOW *title; /* The title window living below the main window */
1196 unsigned long offset; /* Offset of the window top */
1197 unsigned long lineno; /* Current line number */
1200 char grep[SIZEOF_STR]; /* Search string */
1201 regex_t *regex; /* Pre-compiled regex */
1203 /* If non-NULL, points to the view that opened this view. If this view
1204 * is closed tig will switch back to the parent view. */
1205 struct view *parent;
1208 unsigned long lines; /* Total number of lines */
1209 struct line *line; /* Line index */
1210 unsigned long line_size;/* Total number of allocated lines */
1211 unsigned int digits; /* Number of digits in the lines member. */
1219 /* What type of content being displayed. Used in the title bar. */
1221 /* Draw one line; @lineno must be < view->height. */
1222 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1223 /* Read one line; updates view->line. */
1224 bool (*read)(struct view *view, char *data);
1225 /* Depending on view, change display based on current line. */
1226 bool (*enter)(struct view *view, struct line *line);
1227 /* Search for regex in a line. */
1228 bool (*grep)(struct view *view, struct line *line);
1230 void (*select)(struct view *view, struct line *line);
1233 static struct view_ops pager_ops;
1234 static struct view_ops main_ops;
1235 static struct view_ops tree_ops;
1236 static struct view_ops blob_ops;
1238 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1239 { name, cmd, #env, ref, ops, map}
1241 #define VIEW_(id, name, ops, ref) \
1242 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1245 static struct view views[] = {
1246 VIEW_(MAIN, "main", &main_ops, ref_head),
1247 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1248 VIEW_(LOG, "log", &pager_ops, ref_head),
1249 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1250 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1251 VIEW_(HELP, "help", &pager_ops, "static"),
1252 VIEW_(PAGER, "pager", &pager_ops, "static"),
1255 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1257 #define foreach_view(view, i) \
1258 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1260 #define view_is_displayed(view) \
1261 (view == display[0] || view == display[1])
1264 draw_view_line(struct view *view, unsigned int lineno)
1267 bool selected = (view->offset + lineno == view->lineno);
1270 assert(view_is_displayed(view));
1272 if (view->offset + lineno >= view->lines)
1275 line = &view->line[view->offset + lineno];
1278 line->selected = TRUE;
1279 view->ops->select(view, line);
1280 } else if (line->selected) {
1281 line->selected = FALSE;
1282 wmove(view->win, lineno, 0);
1283 wclrtoeol(view->win);
1286 scrollok(view->win, FALSE);
1287 draw_ok = view->ops->draw(view, line, lineno, selected);
1288 scrollok(view->win, TRUE);
1294 redraw_view_from(struct view *view, int lineno)
1296 assert(0 <= lineno && lineno < view->height);
1298 for (; lineno < view->height; lineno++) {
1299 if (!draw_view_line(view, lineno))
1303 redrawwin(view->win);
1305 wnoutrefresh(view->win);
1307 wrefresh(view->win);
1311 redraw_view(struct view *view)
1314 redraw_view_from(view, 0);
1319 update_view_title(struct view *view)
1321 char buf[SIZEOF_STR];
1322 char state[SIZEOF_STR];
1323 size_t bufpos = 0, statelen = 0;
1325 assert(view_is_displayed(view));
1327 if (view->lines || view->pipe) {
1328 unsigned int view_lines = view->offset + view->height;
1329 unsigned int lines = view->lines
1330 ? MIN(view_lines, view->lines) * 100 / view->lines
1333 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1340 time_t secs = time(NULL) - view->start_time;
1342 /* Three git seconds are a long time ... */
1344 string_format_from(state, &statelen, " %lds", secs);
1348 string_format_from(buf, &bufpos, "[%s]", view->name);
1349 if (*view->ref && bufpos < view->width) {
1350 size_t refsize = strlen(view->ref);
1351 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1353 if (minsize < view->width)
1354 refsize = view->width - minsize + 7;
1355 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1358 if (statelen && bufpos < view->width) {
1359 string_format_from(buf, &bufpos, " %s", state);
1362 if (view == display[current_view])
1363 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1365 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1367 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1368 wclrtoeol(view->title);
1369 wmove(view->title, 0, view->width - 1);
1372 wnoutrefresh(view->title);
1374 wrefresh(view->title);
1378 resize_display(void)
1381 struct view *base = display[0];
1382 struct view *view = display[1] ? display[1] : display[0];
1384 /* Setup window dimensions */
1386 getmaxyx(stdscr, base->height, base->width);
1388 /* Make room for the status window. */
1392 /* Horizontal split. */
1393 view->width = base->width;
1394 view->height = SCALE_SPLIT_VIEW(base->height);
1395 base->height -= view->height;
1397 /* Make room for the title bar. */
1401 /* Make room for the title bar. */
1406 foreach_displayed_view (view, i) {
1408 view->win = newwin(view->height, 0, offset, 0);
1410 die("Failed to create %s view", view->name);
1412 scrollok(view->win, TRUE);
1414 view->title = newwin(1, 0, offset + view->height, 0);
1416 die("Failed to create title window");
1419 wresize(view->win, view->height, view->width);
1420 mvwin(view->win, offset, 0);
1421 mvwin(view->title, offset + view->height, 0);
1424 offset += view->height + 1;
1429 redraw_display(void)
1434 foreach_displayed_view (view, i) {
1436 update_view_title(view);
1441 update_display_cursor(struct view *view)
1443 /* Move the cursor to the right-most column of the cursor line.
1445 * XXX: This could turn out to be a bit expensive, but it ensures that
1446 * the cursor does not jump around. */
1448 wmove(view->win, view->lineno - view->offset, view->width - 1);
1449 wrefresh(view->win);
1457 /* Scrolling backend */
1459 do_scroll_view(struct view *view, int lines)
1461 bool redraw_current_line = FALSE;
1463 /* The rendering expects the new offset. */
1464 view->offset += lines;
1466 assert(0 <= view->offset && view->offset < view->lines);
1469 /* Move current line into the view. */
1470 if (view->lineno < view->offset) {
1471 view->lineno = view->offset;
1472 redraw_current_line = TRUE;
1473 } else if (view->lineno >= view->offset + view->height) {
1474 view->lineno = view->offset + view->height - 1;
1475 redraw_current_line = TRUE;
1478 assert(view->offset <= view->lineno && view->lineno < view->lines);
1480 /* Redraw the whole screen if scrolling is pointless. */
1481 if (view->height < ABS(lines)) {
1485 int line = lines > 0 ? view->height - lines : 0;
1486 int end = line + ABS(lines);
1488 wscrl(view->win, lines);
1490 for (; line < end; line++) {
1491 if (!draw_view_line(view, line))
1495 if (redraw_current_line)
1496 draw_view_line(view, view->lineno - view->offset);
1499 redrawwin(view->win);
1500 wrefresh(view->win);
1504 /* Scroll frontend */
1506 scroll_view(struct view *view, enum request request)
1510 assert(view_is_displayed(view));
1513 case REQ_SCROLL_PAGE_DOWN:
1514 lines = view->height;
1515 case REQ_SCROLL_LINE_DOWN:
1516 if (view->offset + lines > view->lines)
1517 lines = view->lines - view->offset;
1519 if (lines == 0 || view->offset + view->height >= view->lines) {
1520 report("Cannot scroll beyond the last line");
1525 case REQ_SCROLL_PAGE_UP:
1526 lines = view->height;
1527 case REQ_SCROLL_LINE_UP:
1528 if (lines > view->offset)
1529 lines = view->offset;
1532 report("Cannot scroll beyond the first line");
1540 die("request %d not handled in switch", request);
1543 do_scroll_view(view, lines);
1548 move_view(struct view *view, enum request request)
1550 int scroll_steps = 0;
1554 case REQ_MOVE_FIRST_LINE:
1555 steps = -view->lineno;
1558 case REQ_MOVE_LAST_LINE:
1559 steps = view->lines - view->lineno - 1;
1562 case REQ_MOVE_PAGE_UP:
1563 steps = view->height > view->lineno
1564 ? -view->lineno : -view->height;
1567 case REQ_MOVE_PAGE_DOWN:
1568 steps = view->lineno + view->height >= view->lines
1569 ? view->lines - view->lineno - 1 : view->height;
1581 die("request %d not handled in switch", request);
1584 if (steps <= 0 && view->lineno == 0) {
1585 report("Cannot move beyond the first line");
1588 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1589 report("Cannot move beyond the last line");
1593 /* Move the current line */
1594 view->lineno += steps;
1595 assert(0 <= view->lineno && view->lineno < view->lines);
1597 /* Check whether the view needs to be scrolled */
1598 if (view->lineno < view->offset ||
1599 view->lineno >= view->offset + view->height) {
1600 scroll_steps = steps;
1601 if (steps < 0 && -steps > view->offset) {
1602 scroll_steps = -view->offset;
1604 } else if (steps > 0) {
1605 if (view->lineno == view->lines - 1 &&
1606 view->lines > view->height) {
1607 scroll_steps = view->lines - view->offset - 1;
1608 if (scroll_steps >= view->height)
1609 scroll_steps -= view->height - 1;
1614 if (!view_is_displayed(view)) {
1615 view->offset += steps;
1616 view->ops->select(view, &view->line[view->lineno]);
1620 /* Repaint the old "current" line if we be scrolling */
1621 if (ABS(steps) < view->height)
1622 draw_view_line(view, view->lineno - steps - view->offset);
1625 do_scroll_view(view, scroll_steps);
1629 /* Draw the current line */
1630 draw_view_line(view, view->lineno - view->offset);
1632 redrawwin(view->win);
1633 wrefresh(view->win);
1642 static void search_view(struct view *view, enum request request);
1645 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1647 assert(view_is_displayed(view));
1649 if (!view->ops->grep(view, line))
1652 if (lineno - view->offset >= view->height) {
1653 view->offset = lineno;
1654 view->lineno = lineno;
1658 unsigned long old_lineno = view->lineno - view->offset;
1660 view->lineno = lineno;
1661 draw_view_line(view, old_lineno);
1663 draw_view_line(view, view->lineno - view->offset);
1664 redrawwin(view->win);
1665 wrefresh(view->win);
1668 report("Line %ld matches '%s'", lineno + 1, view->grep);
1673 find_next(struct view *view, enum request request)
1675 unsigned long lineno = view->lineno;
1680 report("No previous search");
1682 search_view(view, request);
1692 case REQ_SEARCH_BACK:
1701 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1702 lineno += direction;
1704 /* Note, lineno is unsigned long so will wrap around in which case it
1705 * will become bigger than view->lines. */
1706 for (; lineno < view->lines; lineno += direction) {
1707 struct line *line = &view->line[lineno];
1709 if (find_next_line(view, lineno, line))
1713 report("No match found for '%s'", view->grep);
1717 search_view(struct view *view, enum request request)
1722 regfree(view->regex);
1725 view->regex = calloc(1, sizeof(*view->regex));
1730 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1731 if (regex_err != 0) {
1732 char buf[SIZEOF_STR] = "unknown error";
1734 regerror(regex_err, view->regex, buf, sizeof(buf));
1735 report("Search failed: %s", buf);
1739 string_copy(view->grep, opt_search);
1741 find_next(view, request);
1745 * Incremental updating
1749 end_update(struct view *view)
1753 set_nonblocking_input(FALSE);
1754 if (view->pipe == stdin)
1762 begin_update(struct view *view)
1764 const char *id = view->id;
1770 string_copy(view->cmd, opt_cmd);
1772 /* When running random commands, the view ref could have become
1773 * invalid so clear it. */
1776 } else if (view == VIEW(REQ_VIEW_TREE)) {
1777 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1779 if (strcmp(view->vid, view->id))
1782 if (!string_format(view->cmd, format, id, opt_path))
1786 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1788 if (!string_format(view->cmd, format, id, id, id, id, id))
1792 /* Special case for the pager view. */
1794 view->pipe = opt_pipe;
1797 view->pipe = popen(view->cmd, "r");
1803 set_nonblocking_input(TRUE);
1808 string_copy(view->vid, id);
1813 for (i = 0; i < view->lines; i++)
1814 if (view->line[i].data)
1815 free(view->line[i].data);
1821 view->start_time = time(NULL);
1826 static struct line *
1827 realloc_lines(struct view *view, size_t line_size)
1829 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1835 view->line_size = line_size;
1840 update_view(struct view *view)
1842 char in_buffer[BUFSIZ];
1843 char out_buffer[BUFSIZ * 2];
1845 /* The number of lines to read. If too low it will cause too much
1846 * redrawing (and possible flickering), if too high responsiveness
1848 unsigned long lines = view->height;
1849 int redraw_from = -1;
1854 /* Only redraw if lines are visible. */
1855 if (view->offset + view->height >= view->lines)
1856 redraw_from = view->lines - view->offset;
1858 /* FIXME: This is probably not perfect for backgrounded views. */
1859 if (!realloc_lines(view, view->lines + lines))
1862 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1863 size_t linelen = strlen(line);
1866 line[linelen - 1] = 0;
1868 if (opt_iconv != ICONV_NONE) {
1870 size_t inlen = linelen;
1872 char *outbuf = out_buffer;
1873 size_t outlen = sizeof(out_buffer);
1877 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1878 if (ret != (size_t) -1) {
1880 linelen = strlen(out_buffer);
1884 if (!view->ops->read(view, line))
1894 lines = view->lines;
1895 for (digits = 0; lines; digits++)
1898 /* Keep the displayed view in sync with line number scaling. */
1899 if (digits != view->digits) {
1900 view->digits = digits;
1905 if (!view_is_displayed(view))
1908 if (view == VIEW(REQ_VIEW_TREE)) {
1909 /* Clear the view and redraw everything since the tree sorting
1910 * might have rearranged things. */
1913 } else if (redraw_from >= 0) {
1914 /* If this is an incremental update, redraw the previous line
1915 * since for commits some members could have changed when
1916 * loading the main view. */
1917 if (redraw_from > 0)
1920 /* Incrementally draw avoids flickering. */
1921 redraw_view_from(view, redraw_from);
1924 /* Update the title _after_ the redraw so that if the redraw picks up a
1925 * commit reference in view->ref it'll be available here. */
1926 update_view_title(view);
1929 if (ferror(view->pipe)) {
1930 report("Failed to read: %s", strerror(errno));
1933 } else if (feof(view->pipe)) {
1941 report("Allocation failure");
1953 static void open_help_view(struct view *view)
1956 int lines = ARRAY_SIZE(req_info) + 2;
1959 if (view->lines > 0)
1962 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1963 if (!req_info[i].request)
1966 view->line = calloc(lines, sizeof(*view->line));
1968 report("Allocation failure");
1972 view->ops->read(view, "Quick reference for tig keybindings:");
1974 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1977 if (!req_info[i].request) {
1978 view->ops->read(view, "");
1979 view->ops->read(view, req_info[i].help);
1983 key = get_key(req_info[i].request);
1984 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1987 view->ops->read(view, buf);
1992 OPEN_DEFAULT = 0, /* Use default view switching. */
1993 OPEN_SPLIT = 1, /* Split current view. */
1994 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1995 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1999 open_view(struct view *prev, enum request request, enum open_flags flags)
2001 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2002 bool split = !!(flags & OPEN_SPLIT);
2003 bool reload = !!(flags & OPEN_RELOAD);
2004 struct view *view = VIEW(request);
2005 int nviews = displayed_views();
2006 struct view *base_view = display[0];
2008 if (view == prev && nviews == 1 && !reload) {
2009 report("Already in %s view", view->name);
2013 if (view == VIEW(REQ_VIEW_HELP)) {
2014 open_help_view(view);
2016 } else if ((reload || strcmp(view->vid, view->id)) &&
2017 !begin_update(view)) {
2018 report("Failed to load %s view", view->name);
2027 /* Maximize the current view. */
2028 memset(display, 0, sizeof(display));
2030 display[current_view] = view;
2033 /* Resize the view when switching between split- and full-screen,
2034 * or when switching between two different full-screen views. */
2035 if (nviews != displayed_views() ||
2036 (nviews == 1 && base_view != display[0]))
2039 if (split && prev->lineno - prev->offset >= prev->height) {
2040 /* Take the title line into account. */
2041 int lines = prev->lineno - prev->offset - prev->height + 1;
2043 /* Scroll the view that was split if the current line is
2044 * outside the new limited view. */
2045 do_scroll_view(prev, lines);
2048 if (prev && view != prev) {
2049 if (split && !backgrounded) {
2050 /* "Blur" the previous view. */
2051 update_view_title(prev);
2054 view->parent = prev;
2057 if (view->pipe && view->lines == 0) {
2058 /* Clear the old view and let the incremental updating refill
2067 /* If the view is backgrounded the above calls to report()
2068 * won't redraw the view title. */
2070 update_view_title(view);
2075 * User request switch noodle
2079 view_driver(struct view *view, enum request request)
2086 case REQ_MOVE_PAGE_UP:
2087 case REQ_MOVE_PAGE_DOWN:
2088 case REQ_MOVE_FIRST_LINE:
2089 case REQ_MOVE_LAST_LINE:
2090 move_view(view, request);
2093 case REQ_SCROLL_LINE_DOWN:
2094 case REQ_SCROLL_LINE_UP:
2095 case REQ_SCROLL_PAGE_DOWN:
2096 case REQ_SCROLL_PAGE_UP:
2097 scroll_view(view, request);
2102 report("No file chosen, press 't' to open tree view");
2111 case REQ_VIEW_PAGER:
2112 open_view(view, request, OPEN_DEFAULT);
2117 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2119 if ((view == VIEW(REQ_VIEW_DIFF) &&
2120 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2121 (view == VIEW(REQ_VIEW_BLOB) &&
2122 view->parent == VIEW(REQ_VIEW_TREE))) {
2123 view = view->parent;
2124 move_view(view, request);
2125 if (view_is_displayed(view))
2126 update_view_title(view);
2128 move_view(view, request);
2135 report("Nothing to enter");
2138 return view->ops->enter(view, &view->line[view->lineno]);
2142 int nviews = displayed_views();
2143 int next_view = (current_view + 1) % nviews;
2145 if (next_view == current_view) {
2146 report("Only one view is displayed");
2150 current_view = next_view;
2151 /* Blur out the title of the previous view. */
2152 update_view_title(view);
2156 case REQ_TOGGLE_LINENO:
2157 opt_line_number = !opt_line_number;
2161 case REQ_TOGGLE_REV_GRAPH:
2162 opt_rev_graph = !opt_rev_graph;
2167 /* Always reload^Wrerun commands from the prompt. */
2168 open_view(view, opt_request, OPEN_RELOAD);
2172 case REQ_SEARCH_BACK:
2173 search_view(view, request);
2178 find_next(view, request);
2181 case REQ_STOP_LOADING:
2182 for (i = 0; i < ARRAY_SIZE(views); i++) {
2185 report("Stopped loading the %s view", view->name),
2190 case REQ_SHOW_VERSION:
2191 report("%s (built %s)", VERSION, __DATE__);
2194 case REQ_SCREEN_RESIZE:
2197 case REQ_SCREEN_REDRAW:
2205 case REQ_VIEW_CLOSE:
2206 /* XXX: Mark closed views by letting view->parent point to the
2207 * view itself. Parents to closed view should never be
2210 view->parent->parent != view->parent) {
2211 memset(display, 0, sizeof(display));
2213 display[current_view] = view->parent;
2214 view->parent = view;
2224 /* An unknown key will show most commonly used commands. */
2225 report("Unknown key, press 'h' for help");
2238 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2240 char *text = line->data;
2241 enum line_type type = line->type;
2242 int textlen = strlen(text);
2245 wmove(view->win, lineno, 0);
2249 wchgat(view->win, -1, 0, type, NULL);
2252 attr = get_line_attr(type);
2253 wattrset(view->win, attr);
2255 if (opt_line_number || opt_tab_size < TABSIZE) {
2256 static char spaces[] = " ";
2257 int col_offset = 0, col = 0;
2259 if (opt_line_number) {
2260 unsigned long real_lineno = view->offset + lineno + 1;
2262 if (real_lineno == 1 ||
2263 (real_lineno % opt_num_interval) == 0) {
2264 wprintw(view->win, "%.*d", view->digits, real_lineno);
2267 waddnstr(view->win, spaces,
2268 MIN(view->digits, STRING_SIZE(spaces)));
2270 waddstr(view->win, ": ");
2271 col_offset = view->digits + 2;
2274 while (text && col_offset + col < view->width) {
2275 int cols_max = view->width - col_offset - col;
2279 if (*text == '\t') {
2281 assert(sizeof(spaces) > TABSIZE);
2283 cols = opt_tab_size - (col % opt_tab_size);
2286 text = strchr(text, '\t');
2287 cols = line ? text - pos : strlen(pos);
2290 waddnstr(view->win, pos, MIN(cols, cols_max));
2295 int col = 0, pos = 0;
2297 for (; pos < textlen && col < view->width; pos++, col++)
2298 if (text[pos] == '\t')
2299 col += TABSIZE - (col % TABSIZE) - 1;
2301 waddnstr(view->win, text, pos);
2308 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2310 char refbuf[SIZEOF_STR];
2314 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2317 pipe = popen(refbuf, "r");
2321 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2322 ref = chomp_string(ref);
2328 /* This is the only fatal call, since it can "corrupt" the buffer. */
2329 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2336 add_pager_refs(struct view *view, struct line *line)
2338 char buf[SIZEOF_STR];
2339 char *commit_id = line->data + STRING_SIZE("commit ");
2341 size_t bufpos = 0, refpos = 0;
2342 const char *sep = "Refs: ";
2343 bool is_tag = FALSE;
2345 assert(line->type == LINE_COMMIT);
2347 refs = get_refs(commit_id);
2349 if (view == VIEW(REQ_VIEW_DIFF))
2350 goto try_add_describe_ref;
2355 struct ref *ref = refs[refpos];
2356 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2358 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2363 } while (refs[refpos++]->next);
2365 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2366 try_add_describe_ref:
2367 /* Add <tag>-g<commit_id> "fake" reference. */
2368 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2375 if (!realloc_lines(view, view->line_size + 1))
2378 line = &view->line[view->lines];
2379 line->data = strdup(buf);
2383 line->type = LINE_PP_REFS;
2388 pager_read(struct view *view, char *data)
2390 struct line *line = &view->line[view->lines];
2392 line->data = strdup(data);
2396 line->type = get_line_type(line->data);
2399 if (line->type == LINE_COMMIT &&
2400 (view == VIEW(REQ_VIEW_DIFF) ||
2401 view == VIEW(REQ_VIEW_LOG)))
2402 add_pager_refs(view, line);
2408 pager_enter(struct view *view, struct line *line)
2412 if (line->type == LINE_COMMIT &&
2413 (view == VIEW(REQ_VIEW_LOG) ||
2414 view == VIEW(REQ_VIEW_PAGER))) {
2415 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2419 /* Always scroll the view even if it was split. That way
2420 * you can use Enter to scroll through the log view and
2421 * split open each commit diff. */
2422 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2424 /* FIXME: A minor workaround. Scrolling the view will call report("")
2425 * but if we are scrolling a non-current view this won't properly
2426 * update the view title. */
2428 update_view_title(view);
2434 pager_grep(struct view *view, struct line *line)
2437 char *text = line->data;
2442 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2449 pager_select(struct view *view, struct line *line)
2451 if (line->type == LINE_COMMIT) {
2452 char *text = line->data;
2454 string_copy(view->ref, text + STRING_SIZE("commit "));
2455 string_copy(ref_commit, view->ref);
2459 static struct view_ops pager_ops = {
2473 /* Parse output from git-ls-tree(1):
2475 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2476 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2477 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2478 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2481 #define SIZEOF_TREE_ATTR \
2482 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2484 #define TREE_UP_FORMAT "040000 tree %s\t.."
2487 tree_compare_entry(enum line_type type1, char *name1,
2488 enum line_type type2, char *name2)
2490 if (type1 != type2) {
2491 if (type1 == LINE_TREE_DIR)
2496 return strcmp(name1, name2);
2500 tree_read(struct view *view, char *text)
2502 size_t textlen = strlen(text);
2503 char buf[SIZEOF_STR];
2505 enum line_type type;
2506 bool first_read = view->lines == 0;
2508 if (textlen <= SIZEOF_TREE_ATTR)
2511 type = text[STRING_SIZE("100644 ")] == 't'
2512 ? LINE_TREE_DIR : LINE_TREE_FILE;
2515 /* Add path info line */
2516 if (string_format(buf, "Directory path /%s", opt_path) &&
2517 realloc_lines(view, view->line_size + 1) &&
2518 pager_read(view, buf))
2519 view->line[view->lines - 1].type = LINE_DEFAULT;
2523 /* Insert "link" to parent directory. */
2525 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2526 realloc_lines(view, view->line_size + 1) &&
2527 pager_read(view, buf))
2528 view->line[view->lines - 1].type = LINE_TREE_DIR;
2533 /* Strip the path part ... */
2535 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2536 size_t striplen = strlen(opt_path);
2537 char *path = text + SIZEOF_TREE_ATTR;
2539 if (pathlen > striplen)
2540 memmove(path, path + striplen,
2541 pathlen - striplen + 1);
2544 /* Skip "Directory ..." and ".." line. */
2545 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2546 struct line *line = &view->line[pos];
2547 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2548 char *path2 = text + SIZEOF_TREE_ATTR;
2549 int cmp = tree_compare_entry(line->type, path1, type, path2);
2554 text = strdup(text);
2558 if (view->lines > pos)
2559 memmove(&view->line[pos + 1], &view->line[pos],
2560 (view->lines - pos) * sizeof(*line));
2562 line = &view->line[pos];
2569 if (!pager_read(view, text))
2572 /* Move the current line to the first tree entry. */
2576 view->line[view->lines - 1].type = type;
2581 tree_enter(struct view *view, struct line *line)
2583 enum open_flags flags;
2584 enum request request;
2586 switch (line->type) {
2588 /* Depending on whether it is a subdir or parent (updir?) link
2589 * mangle the path buffer. */
2590 if (line == &view->line[1] && *opt_path) {
2591 size_t path_len = strlen(opt_path);
2592 char *dirsep = opt_path + path_len - 1;
2594 while (dirsep > opt_path && dirsep[-1] != '/')
2600 size_t pathlen = strlen(opt_path);
2601 size_t origlen = pathlen;
2602 char *data = line->data;
2603 char *basename = data + SIZEOF_TREE_ATTR;
2605 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2606 opt_path[origlen] = 0;
2611 /* Trees and subtrees share the same ID, so they are not not
2612 * unique like blobs. */
2613 flags = OPEN_RELOAD;
2614 request = REQ_VIEW_TREE;
2617 case LINE_TREE_FILE:
2618 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2619 request = REQ_VIEW_BLOB;
2626 open_view(view, request, flags);
2632 tree_select(struct view *view, struct line *line)
2634 char *text = line->data;
2636 text += STRING_SIZE("100644 blob ");
2638 if (line->type == LINE_TREE_FILE) {
2639 string_ncopy(ref_blob, text, 40);
2640 /* Also update the blob view's ref, since all there must always
2642 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2644 } else if (line->type != LINE_TREE_DIR) {
2648 string_ncopy(view->ref, text, 40);
2651 static struct view_ops tree_ops = {
2661 blob_read(struct view *view, char *line)
2663 bool state = pager_read(view, line);
2666 view->line[view->lines - 1].type = LINE_DEFAULT;
2671 static struct view_ops blob_ops = {
2686 char id[SIZEOF_REV]; /* SHA1 ID. */
2687 char title[128]; /* First line of the commit message. */
2688 char author[75]; /* Author of the commit. */
2689 struct tm time; /* Date from the author ident. */
2690 struct ref **refs; /* Repository references. */
2691 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2692 size_t graph_size; /* The width of the graph array. */
2696 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2698 char buf[DATE_COLS + 1];
2699 struct commit *commit = line->data;
2700 enum line_type type;
2706 if (!*commit->author)
2709 wmove(view->win, lineno, col);
2713 wattrset(view->win, get_line_attr(type));
2714 wchgat(view->win, -1, 0, type, NULL);
2717 type = LINE_MAIN_COMMIT;
2718 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2721 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2722 waddnstr(view->win, buf, timelen);
2723 waddstr(view->win, " ");
2726 wmove(view->win, lineno, col);
2727 if (type != LINE_CURSOR)
2728 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2731 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2733 authorlen = strlen(commit->author);
2734 if (authorlen > AUTHOR_COLS - 2) {
2735 authorlen = AUTHOR_COLS - 2;
2741 waddnstr(view->win, commit->author, authorlen);
2742 if (type != LINE_CURSOR)
2743 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2744 waddch(view->win, '~');
2746 waddstr(view->win, commit->author);
2750 if (type != LINE_CURSOR)
2751 wattrset(view->win, A_NORMAL);
2753 if (opt_rev_graph && commit->graph_size) {
2756 wmove(view->win, lineno, col);
2757 /* Using waddch() instead of waddnstr() ensures that
2758 * they'll be rendered correctly for the cursor line. */
2759 for (i = 0; i < commit->graph_size; i++)
2760 waddch(view->win, commit->graph[i]);
2762 col += commit->graph_size + 1;
2765 wmove(view->win, lineno, col);
2771 if (type == LINE_CURSOR)
2773 else if (commit->refs[i]->tag)
2774 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2776 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2777 waddstr(view->win, "[");
2778 waddstr(view->win, commit->refs[i]->name);
2779 waddstr(view->win, "]");
2780 if (type != LINE_CURSOR)
2781 wattrset(view->win, A_NORMAL);
2782 waddstr(view->win, " ");
2783 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2784 } while (commit->refs[i++]->next);
2787 if (type != LINE_CURSOR)
2788 wattrset(view->win, get_line_attr(type));
2791 int titlelen = strlen(commit->title);
2793 if (col + titlelen > view->width)
2794 titlelen = view->width - col;
2796 waddnstr(view->win, commit->title, titlelen);
2802 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2804 main_read(struct view *view, char *line)
2806 enum line_type type = get_line_type(line);
2807 struct commit *commit = view->lines
2808 ? view->line[view->lines - 1].data : NULL;
2812 commit = calloc(1, sizeof(struct commit));
2816 line += STRING_SIZE("commit ");
2818 view->line[view->lines++].data = commit;
2819 string_copy(commit->id, line);
2820 commit->refs = get_refs(commit->id);
2821 commit->graph[commit->graph_size++] = ACS_LTEE;
2826 /* Parse author lines where the name may be empty:
2827 * author <email@address.tld> 1138474660 +0100
2829 char *ident = line + STRING_SIZE("author ");
2830 char *nameend = strchr(ident, '<');
2831 char *emailend = strchr(ident, '>');
2833 if (!commit || !nameend || !emailend)
2836 *nameend = *emailend = 0;
2837 ident = chomp_string(ident);
2839 ident = chomp_string(nameend + 1);
2844 string_copy(commit->author, ident);
2846 /* Parse epoch and timezone */
2847 if (emailend[1] == ' ') {
2848 char *secs = emailend + 2;
2849 char *zone = strchr(secs, ' ');
2850 time_t time = (time_t) atol(secs);
2852 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2856 tz = ('0' - zone[1]) * 60 * 60 * 10;
2857 tz += ('0' - zone[2]) * 60 * 60;
2858 tz += ('0' - zone[3]) * 60;
2859 tz += ('0' - zone[4]) * 60;
2867 gmtime_r(&time, &commit->time);
2875 /* Fill in the commit title if it has not already been set. */
2876 if (commit->title[0])
2879 /* Require titles to start with a non-space character at the
2880 * offset used by git log. */
2881 if (strncmp(line, " ", 4))
2884 /* Well, if the title starts with a whitespace character,
2885 * try to be forgiving. Otherwise we end up with no title. */
2886 while (isspace(*line))
2890 /* FIXME: More graceful handling of titles; append "..." to
2891 * shortened titles, etc. */
2893 string_copy(commit->title, line);
2900 main_enter(struct view *view, struct line *line)
2902 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2904 open_view(view, REQ_VIEW_DIFF, flags);
2909 main_grep(struct view *view, struct line *line)
2911 struct commit *commit = line->data;
2912 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2913 char buf[DATE_COLS + 1];
2916 for (state = S_TITLE; state < S_END; state++) {
2920 case S_TITLE: text = commit->title; break;
2921 case S_AUTHOR: text = commit->author; break;
2923 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2932 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2940 main_select(struct view *view, struct line *line)
2942 struct commit *commit = line->data;
2944 string_copy(view->ref, commit->id);
2945 string_copy(ref_commit, view->ref);
2948 static struct view_ops main_ops = {
2959 * Unicode / UTF-8 handling
2961 * NOTE: Much of the following code for dealing with unicode is derived from
2962 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2963 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2966 /* I've (over)annotated a lot of code snippets because I am not entirely
2967 * confident that the approach taken by this small UTF-8 interface is correct.
2971 unicode_width(unsigned long c)
2974 (c <= 0x115f /* Hangul Jamo */
2977 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2979 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2980 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2981 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2982 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2983 || (c >= 0xffe0 && c <= 0xffe6)
2984 || (c >= 0x20000 && c <= 0x2fffd)
2985 || (c >= 0x30000 && c <= 0x3fffd)))
2991 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2992 * Illegal bytes are set one. */
2993 static const unsigned char utf8_bytes[256] = {
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 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,
2998 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,
2999 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,
3000 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,
3001 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,
3004 /* Decode UTF-8 multi-byte representation into a unicode character. */
3005 static inline unsigned long
3006 utf8_to_unicode(const char *string, size_t length)
3008 unsigned long unicode;
3012 unicode = string[0];
3015 unicode = (string[0] & 0x1f) << 6;
3016 unicode += (string[1] & 0x3f);
3019 unicode = (string[0] & 0x0f) << 12;
3020 unicode += ((string[1] & 0x3f) << 6);
3021 unicode += (string[2] & 0x3f);
3024 unicode = (string[0] & 0x0f) << 18;
3025 unicode += ((string[1] & 0x3f) << 12);
3026 unicode += ((string[2] & 0x3f) << 6);
3027 unicode += (string[3] & 0x3f);
3030 unicode = (string[0] & 0x0f) << 24;
3031 unicode += ((string[1] & 0x3f) << 18);
3032 unicode += ((string[2] & 0x3f) << 12);
3033 unicode += ((string[3] & 0x3f) << 6);
3034 unicode += (string[4] & 0x3f);
3037 unicode = (string[0] & 0x01) << 30;
3038 unicode += ((string[1] & 0x3f) << 24);
3039 unicode += ((string[2] & 0x3f) << 18);
3040 unicode += ((string[3] & 0x3f) << 12);
3041 unicode += ((string[4] & 0x3f) << 6);
3042 unicode += (string[5] & 0x3f);
3045 die("Invalid unicode length");
3048 /* Invalid characters could return the special 0xfffd value but NUL
3049 * should be just as good. */
3050 return unicode > 0xffff ? 0 : unicode;
3053 /* Calculates how much of string can be shown within the given maximum width
3054 * and sets trimmed parameter to non-zero value if all of string could not be
3057 * Additionally, adds to coloffset how many many columns to move to align with
3058 * the expected position. Takes into account how multi-byte and double-width
3059 * characters will effect the cursor position.
3061 * Returns the number of bytes to output from string to satisfy max_width. */
3063 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3065 const char *start = string;
3066 const char *end = strchr(string, '\0');
3072 while (string < end) {
3073 int c = *(unsigned char *) string;
3074 unsigned char bytes = utf8_bytes[c];
3076 unsigned long unicode;
3078 if (string + bytes > end)
3081 /* Change representation to figure out whether
3082 * it is a single- or double-width character. */
3084 unicode = utf8_to_unicode(string, bytes);
3085 /* FIXME: Graceful handling of invalid unicode character. */
3089 ucwidth = unicode_width(unicode);
3091 if (width > max_width) {
3096 /* The column offset collects the differences between the
3097 * number of bytes encoding a character and the number of
3098 * columns will be used for rendering said character.
3100 * So if some character A is encoded in 2 bytes, but will be
3101 * represented on the screen using only 1 byte this will and up
3102 * adding 1 to the multi-byte column offset.
3104 * Assumes that no double-width character can be encoding in
3105 * less than two bytes. */
3106 if (bytes > ucwidth)
3107 mbwidth += bytes - ucwidth;
3112 *coloffset += mbwidth;
3114 return string - start;
3122 /* Whether or not the curses interface has been initialized. */
3123 static bool cursed = FALSE;
3125 /* The status window is used for polling keystrokes. */
3126 static WINDOW *status_win;
3128 static bool status_empty = TRUE;
3130 /* Update status and title window. */
3132 report(const char *msg, ...)
3134 struct view *view = display[current_view];
3139 if (!status_empty || *msg) {
3142 va_start(args, msg);
3144 wmove(status_win, 0, 0);
3146 vwprintw(status_win, msg, args);
3147 status_empty = FALSE;
3149 status_empty = TRUE;
3151 wclrtoeol(status_win);
3152 wrefresh(status_win);
3157 update_view_title(view);
3158 update_display_cursor(view);
3161 /* Controls when nodelay should be in effect when polling user input. */
3163 set_nonblocking_input(bool loading)
3165 static unsigned int loading_views;
3167 if ((loading == FALSE && loading_views-- == 1) ||
3168 (loading == TRUE && loading_views++ == 0))
3169 nodelay(status_win, loading);
3177 /* Initialize the curses library */
3178 if (isatty(STDIN_FILENO)) {
3179 cursed = !!initscr();
3181 /* Leave stdin and stdout alone when acting as a pager. */
3182 FILE *io = fopen("/dev/tty", "r+");
3185 die("Failed to open /dev/tty");
3186 cursed = !!newterm(NULL, io, io);
3190 die("Failed to initialize curses");
3192 nonl(); /* Tell curses not to do NL->CR/NL on output */
3193 cbreak(); /* Take input chars one at a time, no wait for \n */
3194 noecho(); /* Don't echo input */
3195 leaveok(stdscr, TRUE);
3200 getmaxyx(stdscr, y, x);
3201 status_win = newwin(1, 0, y - 1, 0);
3203 die("Failed to create status window");
3205 /* Enable keyboard mapping */
3206 keypad(status_win, TRUE);
3207 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3211 read_prompt(const char *prompt)
3213 enum { READING, STOP, CANCEL } status = READING;
3214 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3217 while (status == READING) {
3223 foreach_view (view, i)
3228 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3229 wclrtoeol(status_win);
3231 /* Refresh, accept single keystroke of input */
3232 key = wgetch(status_win);
3237 status = pos ? STOP : CANCEL;
3255 if (pos >= sizeof(buf)) {
3256 report("Input string too long");
3261 buf[pos++] = (char) key;
3265 /* Clear the status window */
3266 status_empty = FALSE;
3269 if (status == CANCEL)
3278 * Repository references
3281 static struct ref *refs;
3282 static size_t refs_size;
3284 /* Id <-> ref store */
3285 static struct ref ***id_refs;
3286 static size_t id_refs_size;
3288 static struct ref **
3291 struct ref ***tmp_id_refs;
3292 struct ref **ref_list = NULL;
3293 size_t ref_list_size = 0;
3296 for (i = 0; i < id_refs_size; i++)
3297 if (!strcmp(id, id_refs[i][0]->id))
3300 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3304 id_refs = tmp_id_refs;
3306 for (i = 0; i < refs_size; i++) {
3309 if (strcmp(id, refs[i].id))
3312 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3320 if (ref_list_size > 0)
3321 ref_list[ref_list_size - 1]->next = 1;
3322 ref_list[ref_list_size] = &refs[i];
3324 /* XXX: The properties of the commit chains ensures that we can
3325 * safely modify the shared ref. The repo references will
3326 * always be similar for the same id. */
3327 ref_list[ref_list_size]->next = 0;
3332 id_refs[id_refs_size++] = ref_list;
3338 read_ref(char *id, int idlen, char *name, int namelen)
3343 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3344 /* Commits referenced by tags has "^{}" appended. */
3345 if (name[namelen - 1] != '}')
3348 while (namelen > 0 && name[namelen] != '^')
3352 namelen -= STRING_SIZE("refs/tags/");
3353 name += STRING_SIZE("refs/tags/");
3355 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3356 namelen -= STRING_SIZE("refs/heads/");
3357 name += STRING_SIZE("refs/heads/");
3359 } else if (!strcmp(name, "HEAD")) {
3363 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3367 ref = &refs[refs_size++];
3368 ref->name = malloc(namelen + 1);
3372 strncpy(ref->name, name, namelen);
3373 ref->name[namelen] = 0;
3375 string_copy(ref->id, id);
3383 const char *cmd_env = getenv("TIG_LS_REMOTE");
3384 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3386 return read_properties(popen(cmd, "r"), "\t", read_ref);
3390 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3392 if (!strcmp(name, "i18n.commitencoding"))
3393 string_copy(opt_encoding, value);
3399 load_repo_config(void)
3401 return read_properties(popen("git repo-config --list", "r"),
3402 "=", read_repo_config_option);
3406 read_properties(FILE *pipe, const char *separators,
3407 int (*read_property)(char *, int, char *, int))
3409 char buffer[BUFSIZ];
3416 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3421 name = chomp_string(name);
3422 namelen = strcspn(name, separators);
3424 if (name[namelen]) {
3426 value = chomp_string(name + namelen + 1);
3427 valuelen = strlen(value);
3434 state = read_property(name, namelen, value, valuelen);
3437 if (state != ERR && ferror(pipe))
3450 static void __NORETURN
3453 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3459 static void __NORETURN
3460 die(const char *err, ...)
3466 va_start(args, err);
3467 fputs("tig: ", stderr);
3468 vfprintf(stderr, err, args);
3469 fputs("\n", stderr);
3476 main(int argc, char *argv[])
3479 enum request request;
3482 signal(SIGINT, quit);
3484 if (setlocale(LC_ALL, "")) {
3485 string_copy(opt_codeset, nl_langinfo(CODESET));
3488 if (load_options() == ERR)
3489 die("Failed to load user config.");
3491 /* Load the repo config file so options can be overwritten from
3492 * the command line. */
3493 if (load_repo_config() == ERR)
3494 die("Failed to load repo config.");
3496 if (!parse_options(argc, argv))
3499 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3500 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3501 if (opt_iconv == ICONV_NONE)
3502 die("Failed to initialize character set conversion");
3505 if (load_refs() == ERR)
3506 die("Failed to load refs.");
3508 /* Require a git repository unless when running in pager mode. */
3509 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3510 die("Not a git repository");
3512 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3513 view->cmd_env = getenv(view->cmd_env);
3515 request = opt_request;
3519 while (view_driver(display[current_view], request)) {
3523 foreach_view (view, i)
3526 /* Refresh, accept single keystroke of input */
3527 key = wgetch(status_win);
3529 /* wgetch() with nodelay() enabled returns ERR when there's no
3536 request = get_keybinding(display[current_view]->keymap, key);
3538 /* Some low-level request handling. This keeps access to
3539 * status_win restricted. */
3543 char *cmd = read_prompt(":");
3545 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3546 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3547 opt_request = REQ_VIEW_DIFF;
3549 opt_request = REQ_VIEW_PAGER;
3558 case REQ_SEARCH_BACK:
3560 const char *prompt = request == REQ_SEARCH
3562 char *search = read_prompt(prompt);
3565 string_copy(opt_search, search);
3570 case REQ_SCREEN_RESIZE:
3574 getmaxyx(stdscr, height, width);
3576 /* Resize the status view and let the view driver take
3577 * care of resizing the displayed views. */
3578 wresize(status_win, 1, width);
3579 mvwin(status_win, height - 1, 0);
3580 wrefresh(status_win);