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;
772 keybinding = calloc(1, sizeof(*keybinding));
774 die("Failed to allocate keybinding");
776 keybinding->alias = key;
777 keybinding->request = request;
778 keybinding->next = keybindings[keymap];
779 keybindings[keymap] = keybinding;
782 /* Looks for a key binding first in the given map, then in the generic map, and
783 * lastly in the default keybindings. */
785 get_keybinding(enum keymap keymap, int key)
787 struct keybinding *kbd;
790 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
791 if (kbd->alias == key)
794 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
795 if (kbd->alias == key)
798 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
799 if (default_keybindings[i].alias == key)
800 return default_keybindings[i].request;
802 return (enum request) key;
811 static struct key key_table[] = {
812 { "Enter", KEY_RETURN },
814 { "Backspace", KEY_BACKSPACE },
816 { "Escape", KEY_ESC },
817 { "Left", KEY_LEFT },
818 { "Right", KEY_RIGHT },
820 { "Down", KEY_DOWN },
821 { "Insert", KEY_IC },
822 { "Delete", KEY_DC },
824 { "Home", KEY_HOME },
826 { "PageUp", KEY_PPAGE },
827 { "PageDown", KEY_NPAGE },
837 { "F10", KEY_F(10) },
838 { "F11", KEY_F(11) },
839 { "F12", KEY_F(12) },
843 get_key_value(const char *name)
847 for (i = 0; i < ARRAY_SIZE(key_table); i++)
848 if (!strcasecmp(key_table[i].name, name))
849 return key_table[i].value;
851 if (strlen(name) == 1 && isprint(*name))
858 get_key(enum request request)
860 static char buf[BUFSIZ];
861 static char key_char[] = "'X'";
868 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
869 struct keybinding *keybinding = &default_keybindings[i];
873 if (keybinding->request != request)
876 for (key = 0; key < ARRAY_SIZE(key_table); key++)
877 if (key_table[key].value == keybinding->alias)
878 seq = key_table[key].name;
881 keybinding->alias < 127 &&
882 isprint(keybinding->alias)) {
883 key_char[1] = (char) keybinding->alias;
890 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
891 return "Too many keybindings!";
900 * User config file handling.
903 static struct int_map color_map[] = {
904 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
916 #define set_color(color, name) \
917 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
919 static struct int_map attr_map[] = {
920 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
930 #define set_attribute(attr, name) \
931 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
933 static int config_lineno;
934 static bool config_errors;
935 static char *config_msg;
937 /* Wants: object fgcolor bgcolor [attr] */
939 option_color_command(int argc, char *argv[])
941 struct line_info *info;
943 if (argc != 3 && argc != 4) {
944 config_msg = "Wrong number of arguments given to color command";
948 info = get_line_info(argv[0], strlen(argv[0]));
950 config_msg = "Unknown color name";
954 if (set_color(&info->fg, argv[1]) == ERR ||
955 set_color(&info->bg, argv[2]) == ERR) {
956 config_msg = "Unknown color";
960 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
961 config_msg = "Unknown attribute";
968 /* Wants: name = value */
970 option_set_command(int argc, char *argv[])
973 config_msg = "Wrong number of arguments given to set command";
977 if (strcmp(argv[1], "=")) {
978 config_msg = "No value assigned";
982 if (!strcmp(argv[0], "show-rev-graph")) {
983 opt_rev_graph = (!strcmp(argv[2], "1") ||
984 !strcmp(argv[2], "true") ||
985 !strcmp(argv[2], "yes"));
989 if (!strcmp(argv[0], "line-number-interval")) {
990 opt_num_interval = atoi(argv[2]);
994 if (!strcmp(argv[0], "tab-size")) {
995 opt_tab_size = atoi(argv[2]);
999 if (!strcmp(argv[0], "commit-encoding")) {
1000 char *arg = argv[2];
1001 int delimiter = *arg;
1004 switch (delimiter) {
1007 for (arg++, i = 0; arg[i]; i++)
1008 if (arg[i] == delimiter) {
1013 string_copy(opt_encoding, arg);
1018 config_msg = "Unknown variable name";
1022 /* Wants: mode request key */
1024 option_bind_command(int argc, char *argv[])
1026 enum request request;
1031 config_msg = "Wrong number of arguments given to bind command";
1035 if (set_keymap(&keymap, argv[0]) == ERR) {
1036 config_msg = "Unknown key map";
1040 key = get_key_value(argv[1]);
1042 config_msg = "Unknown key";
1046 request = get_request(argv[2]);
1047 if (request == REQ_UNKNOWN) {
1048 config_msg = "Unknown request name";
1052 add_keybinding(keymap, request, key);
1058 set_option(char *opt, char *value)
1065 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1066 argv[argc++] = value;
1073 while (isspace(*value))
1077 if (!strcmp(opt, "color"))
1078 return option_color_command(argc, argv);
1080 if (!strcmp(opt, "set"))
1081 return option_set_command(argc, argv);
1083 if (!strcmp(opt, "bind"))
1084 return option_bind_command(argc, argv);
1086 config_msg = "Unknown option command";
1091 read_option(char *opt, int optlen, char *value, int valuelen)
1096 config_msg = "Internal error";
1098 /* Check for comment markers, since read_properties() will
1099 * only ensure opt and value are split at first " \t". */
1100 optlen = strcspn(opt, "#");
1104 if (opt[optlen] != 0) {
1105 config_msg = "No option value";
1109 /* Look for comment endings in the value. */
1110 int len = strcspn(value, "#");
1112 if (len < valuelen) {
1114 value[valuelen] = 0;
1117 status = set_option(opt, value);
1120 if (status == ERR) {
1121 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1122 config_lineno, optlen, opt, config_msg);
1123 config_errors = TRUE;
1126 /* Always keep going if errors are encountered. */
1133 char *home = getenv("HOME");
1134 char buf[SIZEOF_STR];
1138 config_errors = FALSE;
1140 if (!home || !string_format(buf, "%s/.tigrc", home))
1143 /* It's ok that the file doesn't exist. */
1144 file = fopen(buf, "r");
1148 if (read_properties(file, " \t", read_option) == ERR ||
1149 config_errors == TRUE)
1150 fprintf(stderr, "Errors while loading %s.\n", buf);
1163 /* The display array of active views and the index of the current view. */
1164 static struct view *display[2];
1165 static unsigned int current_view;
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);
1304 wrefresh(view->win);
1308 redraw_view(struct view *view)
1311 redraw_view_from(view, 0);
1316 update_view_title(struct view *view)
1318 char buf[SIZEOF_STR];
1319 char state[SIZEOF_STR];
1320 size_t bufpos = 0, statelen = 0;
1322 assert(view_is_displayed(view));
1324 if (view->lines || view->pipe) {
1325 unsigned int view_lines = view->offset + view->height;
1326 unsigned int lines = view->lines
1327 ? MIN(view_lines, view->lines) * 100 / view->lines
1330 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1337 time_t secs = time(NULL) - view->start_time;
1339 /* Three git seconds are a long time ... */
1341 string_format_from(state, &statelen, " %lds", secs);
1345 string_format_from(buf, &bufpos, "[%s]", view->name);
1346 if (*view->ref && bufpos < view->width) {
1347 size_t refsize = strlen(view->ref);
1348 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1350 if (minsize < view->width)
1351 refsize = view->width - minsize + 7;
1352 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1355 if (statelen && bufpos < view->width) {
1356 string_format_from(buf, &bufpos, " %s", state);
1359 if (view == display[current_view])
1360 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1362 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1364 werase(view->title);
1365 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1366 wmove(view->title, 0, view->width - 1);
1367 wrefresh(view->title);
1371 resize_display(void)
1374 struct view *base = display[0];
1375 struct view *view = display[1] ? display[1] : display[0];
1377 /* Setup window dimensions */
1379 getmaxyx(stdscr, base->height, base->width);
1381 /* Make room for the status window. */
1385 /* Horizontal split. */
1386 view->width = base->width;
1387 view->height = SCALE_SPLIT_VIEW(base->height);
1388 base->height -= view->height;
1390 /* Make room for the title bar. */
1394 /* Make room for the title bar. */
1399 foreach_displayed_view (view, i) {
1401 view->win = newwin(view->height, 0, offset, 0);
1403 die("Failed to create %s view", view->name);
1405 scrollok(view->win, TRUE);
1407 view->title = newwin(1, 0, offset + view->height, 0);
1409 die("Failed to create title window");
1412 wresize(view->win, view->height, view->width);
1413 mvwin(view->win, offset, 0);
1414 mvwin(view->title, offset + view->height, 0);
1417 offset += view->height + 1;
1422 redraw_display(void)
1427 foreach_displayed_view (view, i) {
1429 update_view_title(view);
1434 update_display_cursor(struct view *view)
1436 /* Move the cursor to the right-most column of the cursor line.
1438 * XXX: This could turn out to be a bit expensive, but it ensures that
1439 * the cursor does not jump around. */
1441 wmove(view->win, view->lineno - view->offset, view->width - 1);
1442 wrefresh(view->win);
1450 /* Scrolling backend */
1452 do_scroll_view(struct view *view, int lines)
1454 bool redraw_current_line = FALSE;
1456 /* The rendering expects the new offset. */
1457 view->offset += lines;
1459 assert(0 <= view->offset && view->offset < view->lines);
1462 /* Move current line into the view. */
1463 if (view->lineno < view->offset) {
1464 view->lineno = view->offset;
1465 redraw_current_line = TRUE;
1466 } else if (view->lineno >= view->offset + view->height) {
1467 view->lineno = view->offset + view->height - 1;
1468 redraw_current_line = TRUE;
1471 assert(view->offset <= view->lineno && view->lineno < view->lines);
1473 /* Redraw the whole screen if scrolling is pointless. */
1474 if (view->height < ABS(lines)) {
1478 int line = lines > 0 ? view->height - lines : 0;
1479 int end = line + ABS(lines);
1481 wscrl(view->win, lines);
1483 for (; line < end; line++) {
1484 if (!draw_view_line(view, line))
1488 if (redraw_current_line)
1489 draw_view_line(view, view->lineno - view->offset);
1492 redrawwin(view->win);
1493 wrefresh(view->win);
1497 /* Scroll frontend */
1499 scroll_view(struct view *view, enum request request)
1503 assert(view_is_displayed(view));
1506 case REQ_SCROLL_PAGE_DOWN:
1507 lines = view->height;
1508 case REQ_SCROLL_LINE_DOWN:
1509 if (view->offset + lines > view->lines)
1510 lines = view->lines - view->offset;
1512 if (lines == 0 || view->offset + view->height >= view->lines) {
1513 report("Cannot scroll beyond the last line");
1518 case REQ_SCROLL_PAGE_UP:
1519 lines = view->height;
1520 case REQ_SCROLL_LINE_UP:
1521 if (lines > view->offset)
1522 lines = view->offset;
1525 report("Cannot scroll beyond the first line");
1533 die("request %d not handled in switch", request);
1536 do_scroll_view(view, lines);
1541 move_view(struct view *view, enum request request)
1543 int scroll_steps = 0;
1547 case REQ_MOVE_FIRST_LINE:
1548 steps = -view->lineno;
1551 case REQ_MOVE_LAST_LINE:
1552 steps = view->lines - view->lineno - 1;
1555 case REQ_MOVE_PAGE_UP:
1556 steps = view->height > view->lineno
1557 ? -view->lineno : -view->height;
1560 case REQ_MOVE_PAGE_DOWN:
1561 steps = view->lineno + view->height >= view->lines
1562 ? view->lines - view->lineno - 1 : view->height;
1574 die("request %d not handled in switch", request);
1577 if (steps <= 0 && view->lineno == 0) {
1578 report("Cannot move beyond the first line");
1581 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1582 report("Cannot move beyond the last line");
1586 /* Move the current line */
1587 view->lineno += steps;
1588 assert(0 <= view->lineno && view->lineno < view->lines);
1590 /* Check whether the view needs to be scrolled */
1591 if (view->lineno < view->offset ||
1592 view->lineno >= view->offset + view->height) {
1593 scroll_steps = steps;
1594 if (steps < 0 && -steps > view->offset) {
1595 scroll_steps = -view->offset;
1597 } else if (steps > 0) {
1598 if (view->lineno == view->lines - 1 &&
1599 view->lines > view->height) {
1600 scroll_steps = view->lines - view->offset - 1;
1601 if (scroll_steps >= view->height)
1602 scroll_steps -= view->height - 1;
1607 if (!view_is_displayed(view)) {
1608 view->offset += steps;
1609 view->ops->select(view, &view->line[view->lineno]);
1613 /* Repaint the old "current" line if we be scrolling */
1614 if (ABS(steps) < view->height)
1615 draw_view_line(view, view->lineno - steps - view->offset);
1618 do_scroll_view(view, scroll_steps);
1622 /* Draw the current line */
1623 draw_view_line(view, view->lineno - view->offset);
1625 redrawwin(view->win);
1626 wrefresh(view->win);
1635 static void search_view(struct view *view, enum request request);
1638 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1640 assert(view_is_displayed(view));
1642 if (!view->ops->grep(view, line))
1645 if (lineno - view->offset >= view->height) {
1646 view->offset = lineno;
1647 view->lineno = lineno;
1651 unsigned long old_lineno = view->lineno - view->offset;
1653 view->lineno = lineno;
1654 draw_view_line(view, old_lineno);
1656 draw_view_line(view, view->lineno - view->offset);
1657 redrawwin(view->win);
1658 wrefresh(view->win);
1661 report("Line %ld matches '%s'", lineno + 1, view->grep);
1666 find_next(struct view *view, enum request request)
1668 unsigned long lineno = view->lineno;
1673 report("No previous search");
1675 search_view(view, request);
1685 case REQ_SEARCH_BACK:
1694 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1695 lineno += direction;
1697 /* Note, lineno is unsigned long so will wrap around in which case it
1698 * will become bigger than view->lines. */
1699 for (; lineno < view->lines; lineno += direction) {
1700 struct line *line = &view->line[lineno];
1702 if (find_next_line(view, lineno, line))
1706 report("No match found for '%s'", view->grep);
1710 search_view(struct view *view, enum request request)
1715 regfree(view->regex);
1718 view->regex = calloc(1, sizeof(*view->regex));
1723 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1724 if (regex_err != 0) {
1725 char buf[SIZEOF_STR] = "unknown error";
1727 regerror(regex_err, view->regex, buf, sizeof(buf));
1728 report("Search failed: %s", buf);
1732 string_copy(view->grep, opt_search);
1734 find_next(view, request);
1738 * Incremental updating
1742 end_update(struct view *view)
1746 set_nonblocking_input(FALSE);
1747 if (view->pipe == stdin)
1755 begin_update(struct view *view)
1757 const char *id = view->id;
1763 string_copy(view->cmd, opt_cmd);
1765 /* When running random commands, the view ref could have become
1766 * invalid so clear it. */
1769 } else if (view == VIEW(REQ_VIEW_TREE)) {
1770 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1772 if (strcmp(view->vid, view->id))
1775 if (!string_format(view->cmd, format, id, opt_path))
1779 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1781 if (!string_format(view->cmd, format, id, id, id, id, id))
1785 /* Special case for the pager view. */
1787 view->pipe = opt_pipe;
1790 view->pipe = popen(view->cmd, "r");
1796 set_nonblocking_input(TRUE);
1801 string_copy(view->vid, id);
1806 for (i = 0; i < view->lines; i++)
1807 if (view->line[i].data)
1808 free(view->line[i].data);
1814 view->start_time = time(NULL);
1819 static struct line *
1820 realloc_lines(struct view *view, size_t line_size)
1822 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1828 view->line_size = line_size;
1833 update_view(struct view *view)
1835 char in_buffer[BUFSIZ];
1836 char out_buffer[BUFSIZ * 2];
1838 /* The number of lines to read. If too low it will cause too much
1839 * redrawing (and possible flickering), if too high responsiveness
1841 unsigned long lines = view->height;
1842 int redraw_from = -1;
1847 /* Only redraw if lines are visible. */
1848 if (view->offset + view->height >= view->lines)
1849 redraw_from = view->lines - view->offset;
1851 /* FIXME: This is probably not perfect for backgrounded views. */
1852 if (!realloc_lines(view, view->lines + lines))
1855 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1856 size_t linelen = strlen(line);
1859 line[linelen - 1] = 0;
1861 if (opt_iconv != ICONV_NONE) {
1863 size_t inlen = linelen;
1865 char *outbuf = out_buffer;
1866 size_t outlen = sizeof(out_buffer);
1870 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1871 if (ret != (size_t) -1) {
1873 linelen = strlen(out_buffer);
1877 if (!view->ops->read(view, line))
1887 lines = view->lines;
1888 for (digits = 0; lines; digits++)
1891 /* Keep the displayed view in sync with line number scaling. */
1892 if (digits != view->digits) {
1893 view->digits = digits;
1898 if (!view_is_displayed(view))
1901 if (view == VIEW(REQ_VIEW_TREE)) {
1902 /* Clear the view and redraw everything since the tree sorting
1903 * might have rearranged things. */
1906 } else if (redraw_from >= 0) {
1907 /* If this is an incremental update, redraw the previous line
1908 * since for commits some members could have changed when
1909 * loading the main view. */
1910 if (redraw_from > 0)
1913 /* Incrementally draw avoids flickering. */
1914 redraw_view_from(view, redraw_from);
1917 /* Update the title _after_ the redraw so that if the redraw picks up a
1918 * commit reference in view->ref it'll be available here. */
1919 update_view_title(view);
1922 if (ferror(view->pipe)) {
1923 report("Failed to read: %s", strerror(errno));
1926 } else if (feof(view->pipe)) {
1934 report("Allocation failure");
1946 static void open_help_view(struct view *view)
1949 int lines = ARRAY_SIZE(req_info) + 2;
1952 if (view->lines > 0)
1955 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1956 if (!req_info[i].request)
1959 view->line = calloc(lines, sizeof(*view->line));
1961 report("Allocation failure");
1965 view->ops->read(view, "Quick reference for tig keybindings:");
1967 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1970 if (!req_info[i].request) {
1971 view->ops->read(view, "");
1972 view->ops->read(view, req_info[i].help);
1976 key = get_key(req_info[i].request);
1977 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1980 view->ops->read(view, buf);
1985 OPEN_DEFAULT = 0, /* Use default view switching. */
1986 OPEN_SPLIT = 1, /* Split current view. */
1987 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1988 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1992 open_view(struct view *prev, enum request request, enum open_flags flags)
1994 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1995 bool split = !!(flags & OPEN_SPLIT);
1996 bool reload = !!(flags & OPEN_RELOAD);
1997 struct view *view = VIEW(request);
1998 int nviews = displayed_views();
1999 struct view *base_view = display[0];
2001 if (view == prev && nviews == 1 && !reload) {
2002 report("Already in %s view", view->name);
2006 if (view == VIEW(REQ_VIEW_HELP)) {
2007 open_help_view(view);
2009 } else if ((reload || strcmp(view->vid, view->id)) &&
2010 !begin_update(view)) {
2011 report("Failed to load %s view", view->name);
2020 /* Maximize the current view. */
2021 memset(display, 0, sizeof(display));
2023 display[current_view] = view;
2026 /* Resize the view when switching between split- and full-screen,
2027 * or when switching between two different full-screen views. */
2028 if (nviews != displayed_views() ||
2029 (nviews == 1 && base_view != display[0]))
2032 if (split && prev->lineno - prev->offset >= prev->height) {
2033 /* Take the title line into account. */
2034 int lines = prev->lineno - prev->offset - prev->height + 1;
2036 /* Scroll the view that was split if the current line is
2037 * outside the new limited view. */
2038 do_scroll_view(prev, lines);
2041 if (prev && view != prev) {
2042 if (split && !backgrounded) {
2043 /* "Blur" the previous view. */
2044 update_view_title(prev);
2047 view->parent = prev;
2050 if (view->pipe && view->lines == 0) {
2051 /* Clear the old view and let the incremental updating refill
2060 /* If the view is backgrounded the above calls to report()
2061 * won't redraw the view title. */
2063 update_view_title(view);
2068 * User request switch noodle
2072 view_driver(struct view *view, enum request request)
2079 case REQ_MOVE_PAGE_UP:
2080 case REQ_MOVE_PAGE_DOWN:
2081 case REQ_MOVE_FIRST_LINE:
2082 case REQ_MOVE_LAST_LINE:
2083 move_view(view, request);
2086 case REQ_SCROLL_LINE_DOWN:
2087 case REQ_SCROLL_LINE_UP:
2088 case REQ_SCROLL_PAGE_DOWN:
2089 case REQ_SCROLL_PAGE_UP:
2090 scroll_view(view, request);
2095 report("No file chosen, press 't' to open tree view");
2104 case REQ_VIEW_PAGER:
2105 open_view(view, request, OPEN_DEFAULT);
2110 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2112 if ((view == VIEW(REQ_VIEW_DIFF) &&
2113 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2114 (view == VIEW(REQ_VIEW_BLOB) &&
2115 view->parent == VIEW(REQ_VIEW_TREE))) {
2116 view = view->parent;
2117 move_view(view, request);
2118 if (view_is_displayed(view))
2119 update_view_title(view);
2121 move_view(view, request);
2128 report("Nothing to enter");
2131 return view->ops->enter(view, &view->line[view->lineno]);
2135 int nviews = displayed_views();
2136 int next_view = (current_view + 1) % nviews;
2138 if (next_view == current_view) {
2139 report("Only one view is displayed");
2143 current_view = next_view;
2144 /* Blur out the title of the previous view. */
2145 update_view_title(view);
2149 case REQ_TOGGLE_LINENO:
2150 opt_line_number = !opt_line_number;
2154 case REQ_TOGGLE_REV_GRAPH:
2155 opt_rev_graph = !opt_rev_graph;
2160 /* Always reload^Wrerun commands from the prompt. */
2161 open_view(view, opt_request, OPEN_RELOAD);
2165 case REQ_SEARCH_BACK:
2166 search_view(view, request);
2171 find_next(view, request);
2174 case REQ_STOP_LOADING:
2175 for (i = 0; i < ARRAY_SIZE(views); i++) {
2178 report("Stopped loading the %s view", view->name),
2183 case REQ_SHOW_VERSION:
2184 report("%s (built %s)", VERSION, __DATE__);
2187 case REQ_SCREEN_RESIZE:
2190 case REQ_SCREEN_REDRAW:
2198 case REQ_VIEW_CLOSE:
2199 /* XXX: Mark closed views by letting view->parent point to the
2200 * view itself. Parents to closed view should never be
2203 view->parent->parent != view->parent) {
2204 memset(display, 0, sizeof(display));
2206 display[current_view] = view->parent;
2207 view->parent = view;
2217 /* An unknown key will show most commonly used commands. */
2218 report("Unknown key, press 'h' for help");
2231 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2233 char *text = line->data;
2234 enum line_type type = line->type;
2235 int textlen = strlen(text);
2238 wmove(view->win, lineno, 0);
2242 wchgat(view->win, -1, 0, type, NULL);
2245 attr = get_line_attr(type);
2246 wattrset(view->win, attr);
2248 if (opt_line_number || opt_tab_size < TABSIZE) {
2249 static char spaces[] = " ";
2250 int col_offset = 0, col = 0;
2252 if (opt_line_number) {
2253 unsigned long real_lineno = view->offset + lineno + 1;
2255 if (real_lineno == 1 ||
2256 (real_lineno % opt_num_interval) == 0) {
2257 wprintw(view->win, "%.*d", view->digits, real_lineno);
2260 waddnstr(view->win, spaces,
2261 MIN(view->digits, STRING_SIZE(spaces)));
2263 waddstr(view->win, ": ");
2264 col_offset = view->digits + 2;
2267 while (text && col_offset + col < view->width) {
2268 int cols_max = view->width - col_offset - col;
2272 if (*text == '\t') {
2274 assert(sizeof(spaces) > TABSIZE);
2276 cols = opt_tab_size - (col % opt_tab_size);
2279 text = strchr(text, '\t');
2280 cols = line ? text - pos : strlen(pos);
2283 waddnstr(view->win, pos, MIN(cols, cols_max));
2288 int col = 0, pos = 0;
2290 for (; pos < textlen && col < view->width; pos++, col++)
2291 if (text[pos] == '\t')
2292 col += TABSIZE - (col % TABSIZE) - 1;
2294 waddnstr(view->win, text, pos);
2301 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2303 char refbuf[SIZEOF_STR];
2307 if (!string_format(refbuf, "git describe %s", commit_id))
2310 pipe = popen(refbuf, "r");
2314 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2315 ref = chomp_string(ref);
2321 /* This is the only fatal call, since it can "corrupt" the buffer. */
2322 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2329 add_pager_refs(struct view *view, struct line *line)
2331 char buf[SIZEOF_STR];
2332 char *commit_id = line->data + STRING_SIZE("commit ");
2334 size_t bufpos = 0, refpos = 0;
2335 const char *sep = "Refs: ";
2336 bool is_tag = FALSE;
2338 assert(line->type == LINE_COMMIT);
2340 refs = get_refs(commit_id);
2342 if (view == VIEW(REQ_VIEW_DIFF))
2343 goto try_add_describe_ref;
2348 struct ref *ref = refs[refpos];
2349 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2351 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2356 } while (refs[refpos++]->next);
2358 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2359 try_add_describe_ref:
2360 /* Add <tag>-g<commit_id> "fake" reference. */
2361 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2368 if (!realloc_lines(view, view->line_size + 1))
2371 line = &view->line[view->lines];
2372 line->data = strdup(buf);
2376 line->type = LINE_PP_REFS;
2381 pager_read(struct view *view, char *data)
2383 struct line *line = &view->line[view->lines];
2385 line->data = strdup(data);
2389 line->type = get_line_type(line->data);
2392 if (line->type == LINE_COMMIT &&
2393 (view == VIEW(REQ_VIEW_DIFF) ||
2394 view == VIEW(REQ_VIEW_LOG)))
2395 add_pager_refs(view, line);
2401 pager_enter(struct view *view, struct line *line)
2405 if (line->type == LINE_COMMIT &&
2406 (view == VIEW(REQ_VIEW_LOG) ||
2407 view == VIEW(REQ_VIEW_PAGER))) {
2408 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2412 /* Always scroll the view even if it was split. That way
2413 * you can use Enter to scroll through the log view and
2414 * split open each commit diff. */
2415 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2417 /* FIXME: A minor workaround. Scrolling the view will call report("")
2418 * but if we are scrolling a non-current view this won't properly
2419 * update the view title. */
2421 update_view_title(view);
2427 pager_grep(struct view *view, struct line *line)
2430 char *text = line->data;
2435 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2442 pager_select(struct view *view, struct line *line)
2444 if (line->type == LINE_COMMIT) {
2445 char *text = line->data;
2447 string_copy(view->ref, text + STRING_SIZE("commit "));
2448 string_copy(ref_commit, view->ref);
2452 static struct view_ops pager_ops = {
2466 /* Parse output from git-ls-tree(1):
2468 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2469 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2470 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2471 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2474 #define SIZEOF_TREE_ATTR \
2475 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2477 #define TREE_UP_FORMAT "040000 tree %s\t.."
2480 tree_compare_entry(enum line_type type1, char *name1,
2481 enum line_type type2, char *name2)
2483 if (type1 != type2) {
2484 if (type1 == LINE_TREE_DIR)
2489 return strcmp(name1, name2);
2493 tree_read(struct view *view, char *text)
2495 size_t textlen = strlen(text);
2496 char buf[SIZEOF_STR];
2498 enum line_type type;
2499 bool first_read = view->lines == 0;
2501 if (textlen <= SIZEOF_TREE_ATTR)
2504 type = text[STRING_SIZE("100644 ")] == 't'
2505 ? LINE_TREE_DIR : LINE_TREE_FILE;
2508 /* Add path info line */
2509 if (string_format(buf, "Directory path /%s", opt_path) &&
2510 realloc_lines(view, view->line_size + 1) &&
2511 pager_read(view, buf))
2512 view->line[view->lines - 1].type = LINE_DEFAULT;
2516 /* Insert "link" to parent directory. */
2518 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2519 realloc_lines(view, view->line_size + 1) &&
2520 pager_read(view, buf))
2521 view->line[view->lines - 1].type = LINE_TREE_DIR;
2526 /* Strip the path part ... */
2528 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2529 size_t striplen = strlen(opt_path);
2530 char *path = text + SIZEOF_TREE_ATTR;
2532 if (pathlen > striplen)
2533 memmove(path, path + striplen,
2534 pathlen - striplen + 1);
2537 /* Skip "Directory ..." and ".." line. */
2538 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2539 struct line *line = &view->line[pos];
2540 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2541 char *path2 = text + SIZEOF_TREE_ATTR;
2542 int cmp = tree_compare_entry(line->type, path1, type, path2);
2547 text = strdup(text);
2551 if (view->lines > pos)
2552 memmove(&view->line[pos + 1], &view->line[pos],
2553 (view->lines - pos) * sizeof(*line));
2555 line = &view->line[pos];
2562 if (!pager_read(view, text))
2565 /* Move the current line to the first tree entry. */
2569 view->line[view->lines - 1].type = type;
2574 tree_enter(struct view *view, struct line *line)
2576 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2577 enum request request;
2579 switch (line->type) {
2581 /* Depending on whether it is a subdir or parent (updir?) link
2582 * mangle the path buffer. */
2583 if (line == &view->line[1] && *opt_path) {
2584 size_t path_len = strlen(opt_path);
2585 char *dirsep = opt_path + path_len - 1;
2587 while (dirsep > opt_path && dirsep[-1] != '/')
2593 size_t pathlen = strlen(opt_path);
2594 size_t origlen = pathlen;
2595 char *data = line->data;
2596 char *basename = data + SIZEOF_TREE_ATTR;
2598 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2599 opt_path[origlen] = 0;
2604 /* Trees and subtrees share the same ID, so they are not not
2605 * unique like blobs. */
2606 flags |= OPEN_RELOAD;
2607 request = REQ_VIEW_TREE;
2610 case LINE_TREE_FILE:
2611 request = REQ_VIEW_BLOB;
2618 open_view(view, request, flags);
2624 tree_select(struct view *view, struct line *line)
2626 char *text = line->data;
2628 text += STRING_SIZE("100644 blob ");
2630 if (line->type == LINE_TREE_FILE) {
2631 string_ncopy(ref_blob, text, 40);
2632 /* Also update the blob view's ref, since all there must always
2634 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2636 } else if (line->type != LINE_TREE_DIR) {
2640 string_ncopy(view->ref, text, 40);
2643 static struct view_ops tree_ops = {
2653 blob_read(struct view *view, char *line)
2655 bool state = pager_read(view, line);
2658 view->line[view->lines - 1].type = LINE_DEFAULT;
2663 static struct view_ops blob_ops = {
2678 char id[SIZEOF_REV]; /* SHA1 ID. */
2679 char title[75]; /* First line of the commit message. */
2680 char author[75]; /* Author of the commit. */
2681 struct tm time; /* Date from the author ident. */
2682 struct ref **refs; /* Repository references. */
2683 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2684 size_t graph_size; /* The width of the graph array. */
2688 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2690 char buf[DATE_COLS + 1];
2691 struct commit *commit = line->data;
2692 enum line_type type;
2698 if (!*commit->author)
2701 wmove(view->win, lineno, col);
2705 wattrset(view->win, get_line_attr(type));
2706 wchgat(view->win, -1, 0, type, NULL);
2709 type = LINE_MAIN_COMMIT;
2710 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2713 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2714 waddnstr(view->win, buf, timelen);
2715 waddstr(view->win, " ");
2718 wmove(view->win, lineno, col);
2719 if (type != LINE_CURSOR)
2720 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2723 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2725 authorlen = strlen(commit->author);
2726 if (authorlen > AUTHOR_COLS - 2) {
2727 authorlen = AUTHOR_COLS - 2;
2733 waddnstr(view->win, commit->author, authorlen);
2734 if (type != LINE_CURSOR)
2735 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2736 waddch(view->win, '~');
2738 waddstr(view->win, commit->author);
2742 if (type != LINE_CURSOR)
2743 wattrset(view->win, A_NORMAL);
2745 if (opt_rev_graph && commit->graph_size) {
2748 wmove(view->win, lineno, col);
2749 /* Using waddch() instead of waddnstr() ensures that
2750 * they'll be rendered correctly for the cursor line. */
2751 for (i = 0; i < commit->graph_size; i++)
2752 waddch(view->win, commit->graph[i]);
2754 col += commit->graph_size + 1;
2757 wmove(view->win, lineno, col);
2763 if (type == LINE_CURSOR)
2765 else if (commit->refs[i]->tag)
2766 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2768 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2769 waddstr(view->win, "[");
2770 waddstr(view->win, commit->refs[i]->name);
2771 waddstr(view->win, "]");
2772 if (type != LINE_CURSOR)
2773 wattrset(view->win, A_NORMAL);
2774 waddstr(view->win, " ");
2775 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2776 } while (commit->refs[i++]->next);
2779 if (type != LINE_CURSOR)
2780 wattrset(view->win, get_line_attr(type));
2783 int titlelen = strlen(commit->title);
2785 if (col + titlelen > view->width)
2786 titlelen = view->width - col;
2788 waddnstr(view->win, commit->title, titlelen);
2794 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2796 main_read(struct view *view, char *line)
2798 enum line_type type = get_line_type(line);
2799 struct commit *commit = view->lines
2800 ? view->line[view->lines - 1].data : NULL;
2804 commit = calloc(1, sizeof(struct commit));
2808 line += STRING_SIZE("commit ");
2810 view->line[view->lines++].data = commit;
2811 string_copy(commit->id, line);
2812 commit->refs = get_refs(commit->id);
2813 commit->graph[commit->graph_size++] = ACS_LTEE;
2818 char *ident = line + STRING_SIZE("author ");
2819 char *end = strchr(ident, '<');
2825 char *email = end + 1;
2827 for (; end > ident && isspace(end[-1]); end--) ;
2829 if (end == ident && *email) {
2831 end = strchr(ident, '>');
2832 for (; end > ident && isspace(end[-1]); end--) ;
2837 /* End is NULL or ident meaning there's no author. */
2841 string_copy(commit->author, ident);
2843 /* Parse epoch and timezone */
2845 char *secs = strchr(end + 1, '>');
2849 if (!secs || secs[1] != ' ')
2853 time = (time_t) atol(secs);
2854 zone = strchr(secs, ' ');
2855 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2859 tz = ('0' - zone[1]) * 60 * 60 * 10;
2860 tz += ('0' - zone[2]) * 60 * 60;
2861 tz += ('0' - zone[3]) * 60;
2862 tz += ('0' - zone[4]) * 60;
2869 gmtime_r(&time, &commit->time);
2877 /* Fill in the commit title if it has not already been set. */
2878 if (commit->title[0])
2881 /* Require titles to start with a non-space character at the
2882 * offset used by git log. */
2883 /* FIXME: More gracefull handling of titles; append "..." to
2884 * shortened titles, etc. */
2885 if (strncmp(line, " ", 4) ||
2889 string_copy(commit->title, line + 4);
2896 main_enter(struct view *view, struct line *line)
2898 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2900 open_view(view, REQ_VIEW_DIFF, flags);
2905 main_grep(struct view *view, struct line *line)
2907 struct commit *commit = line->data;
2908 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2909 char buf[DATE_COLS + 1];
2912 for (state = S_TITLE; state < S_END; state++) {
2916 case S_TITLE: text = commit->title; break;
2917 case S_AUTHOR: text = commit->author; break;
2919 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2928 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2936 main_select(struct view *view, struct line *line)
2938 struct commit *commit = line->data;
2940 string_copy(view->ref, commit->id);
2941 string_copy(ref_commit, view->ref);
2944 static struct view_ops main_ops = {
2955 * Unicode / UTF-8 handling
2957 * NOTE: Much of the following code for dealing with unicode is derived from
2958 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2959 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2962 /* I've (over)annotated a lot of code snippets because I am not entirely
2963 * confident that the approach taken by this small UTF-8 interface is correct.
2967 unicode_width(unsigned long c)
2970 (c <= 0x115f /* Hangul Jamo */
2973 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2975 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2976 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2977 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2978 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2979 || (c >= 0xffe0 && c <= 0xffe6)
2980 || (c >= 0x20000 && c <= 0x2fffd)
2981 || (c >= 0x30000 && c <= 0x3fffd)))
2987 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2988 * Illegal bytes are set one. */
2989 static const unsigned char utf8_bytes[256] = {
2990 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,
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 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,
2997 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,
3000 /* Decode UTF-8 multi-byte representation into a unicode character. */
3001 static inline unsigned long
3002 utf8_to_unicode(const char *string, size_t length)
3004 unsigned long unicode;
3008 unicode = string[0];
3011 unicode = (string[0] & 0x1f) << 6;
3012 unicode += (string[1] & 0x3f);
3015 unicode = (string[0] & 0x0f) << 12;
3016 unicode += ((string[1] & 0x3f) << 6);
3017 unicode += (string[2] & 0x3f);
3020 unicode = (string[0] & 0x0f) << 18;
3021 unicode += ((string[1] & 0x3f) << 12);
3022 unicode += ((string[2] & 0x3f) << 6);
3023 unicode += (string[3] & 0x3f);
3026 unicode = (string[0] & 0x0f) << 24;
3027 unicode += ((string[1] & 0x3f) << 18);
3028 unicode += ((string[2] & 0x3f) << 12);
3029 unicode += ((string[3] & 0x3f) << 6);
3030 unicode += (string[4] & 0x3f);
3033 unicode = (string[0] & 0x01) << 30;
3034 unicode += ((string[1] & 0x3f) << 24);
3035 unicode += ((string[2] & 0x3f) << 18);
3036 unicode += ((string[3] & 0x3f) << 12);
3037 unicode += ((string[4] & 0x3f) << 6);
3038 unicode += (string[5] & 0x3f);
3041 die("Invalid unicode length");
3044 /* Invalid characters could return the special 0xfffd value but NUL
3045 * should be just as good. */
3046 return unicode > 0xffff ? 0 : unicode;
3049 /* Calculates how much of string can be shown within the given maximum width
3050 * and sets trimmed parameter to non-zero value if all of string could not be
3053 * Additionally, adds to coloffset how many many columns to move to align with
3054 * the expected position. Takes into account how multi-byte and double-width
3055 * characters will effect the cursor position.
3057 * Returns the number of bytes to output from string to satisfy max_width. */
3059 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3061 const char *start = string;
3062 const char *end = strchr(string, '\0');
3068 while (string < end) {
3069 int c = *(unsigned char *) string;
3070 unsigned char bytes = utf8_bytes[c];
3072 unsigned long unicode;
3074 if (string + bytes > end)
3077 /* Change representation to figure out whether
3078 * it is a single- or double-width character. */
3080 unicode = utf8_to_unicode(string, bytes);
3081 /* FIXME: Graceful handling of invalid unicode character. */
3085 ucwidth = unicode_width(unicode);
3087 if (width > max_width) {
3092 /* The column offset collects the differences between the
3093 * number of bytes encoding a character and the number of
3094 * columns will be used for rendering said character.
3096 * So if some character A is encoded in 2 bytes, but will be
3097 * represented on the screen using only 1 byte this will and up
3098 * adding 1 to the multi-byte column offset.
3100 * Assumes that no double-width character can be encoding in
3101 * less than two bytes. */
3102 if (bytes > ucwidth)
3103 mbwidth += bytes - ucwidth;
3108 *coloffset += mbwidth;
3110 return string - start;
3118 /* Whether or not the curses interface has been initialized. */
3119 static bool cursed = FALSE;
3121 /* The status window is used for polling keystrokes. */
3122 static WINDOW *status_win;
3124 /* Update status and title window. */
3126 report(const char *msg, ...)
3128 static bool empty = TRUE;
3129 struct view *view = display[current_view];
3131 if (!empty || *msg) {
3134 va_start(args, msg);
3137 wmove(status_win, 0, 0);
3139 vwprintw(status_win, msg, args);
3144 wrefresh(status_win);
3149 update_view_title(view);
3150 update_display_cursor(view);
3153 /* Controls when nodelay should be in effect when polling user input. */
3155 set_nonblocking_input(bool loading)
3157 static unsigned int loading_views;
3159 if ((loading == FALSE && loading_views-- == 1) ||
3160 (loading == TRUE && loading_views++ == 0))
3161 nodelay(status_win, loading);
3169 /* Initialize the curses library */
3170 if (isatty(STDIN_FILENO)) {
3171 cursed = !!initscr();
3173 /* Leave stdin and stdout alone when acting as a pager. */
3174 FILE *io = fopen("/dev/tty", "r+");
3177 die("Failed to open /dev/tty");
3178 cursed = !!newterm(NULL, io, io);
3182 die("Failed to initialize curses");
3184 nonl(); /* Tell curses not to do NL->CR/NL on output */
3185 cbreak(); /* Take input chars one at a time, no wait for \n */
3186 noecho(); /* Don't echo input */
3187 leaveok(stdscr, TRUE);
3192 getmaxyx(stdscr, y, x);
3193 status_win = newwin(1, 0, y - 1, 0);
3195 die("Failed to create status window");
3197 /* Enable keyboard mapping */
3198 keypad(status_win, TRUE);
3199 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3203 read_prompt(const char *prompt)
3205 enum { READING, STOP, CANCEL } status = READING;
3206 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3209 while (status == READING) {
3213 foreach_view (view, i)
3216 report("%s%.*s", prompt, pos, buf);
3217 /* Refresh, accept single keystroke of input */
3218 key = wgetch(status_win);
3223 status = pos ? STOP : CANCEL;
3241 if (pos >= sizeof(buf)) {
3242 report("Input string too long");
3247 buf[pos++] = (char) key;
3251 if (status == CANCEL) {
3252 /* Clear the status window */
3263 * Repository references
3266 static struct ref *refs;
3267 static size_t refs_size;
3269 /* Id <-> ref store */
3270 static struct ref ***id_refs;
3271 static size_t id_refs_size;
3273 static struct ref **
3276 struct ref ***tmp_id_refs;
3277 struct ref **ref_list = NULL;
3278 size_t ref_list_size = 0;
3281 for (i = 0; i < id_refs_size; i++)
3282 if (!strcmp(id, id_refs[i][0]->id))
3285 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3289 id_refs = tmp_id_refs;
3291 for (i = 0; i < refs_size; i++) {
3294 if (strcmp(id, refs[i].id))
3297 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3305 if (ref_list_size > 0)
3306 ref_list[ref_list_size - 1]->next = 1;
3307 ref_list[ref_list_size] = &refs[i];
3309 /* XXX: The properties of the commit chains ensures that we can
3310 * safely modify the shared ref. The repo references will
3311 * always be similar for the same id. */
3312 ref_list[ref_list_size]->next = 0;
3317 id_refs[id_refs_size++] = ref_list;
3323 read_ref(char *id, int idlen, char *name, int namelen)
3328 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3329 /* Commits referenced by tags has "^{}" appended. */
3330 if (name[namelen - 1] != '}')
3333 while (namelen > 0 && name[namelen] != '^')
3337 namelen -= STRING_SIZE("refs/tags/");
3338 name += STRING_SIZE("refs/tags/");
3340 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3341 namelen -= STRING_SIZE("refs/heads/");
3342 name += STRING_SIZE("refs/heads/");
3344 } else if (!strcmp(name, "HEAD")) {
3348 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3352 ref = &refs[refs_size++];
3353 ref->name = malloc(namelen + 1);
3357 strncpy(ref->name, name, namelen);
3358 ref->name[namelen] = 0;
3360 string_copy(ref->id, id);
3368 const char *cmd_env = getenv("TIG_LS_REMOTE");
3369 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3371 return read_properties(popen(cmd, "r"), "\t", read_ref);
3375 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3377 if (!strcmp(name, "i18n.commitencoding"))
3378 string_copy(opt_encoding, value);
3384 load_repo_config(void)
3386 return read_properties(popen("git repo-config --list", "r"),
3387 "=", read_repo_config_option);
3391 read_properties(FILE *pipe, const char *separators,
3392 int (*read_property)(char *, int, char *, int))
3394 char buffer[BUFSIZ];
3401 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3406 name = chomp_string(name);
3407 namelen = strcspn(name, separators);
3409 if (name[namelen]) {
3411 value = chomp_string(name + namelen + 1);
3412 valuelen = strlen(value);
3419 state = read_property(name, namelen, value, valuelen);
3422 if (state != ERR && ferror(pipe))
3435 static void __NORETURN
3438 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3444 static void __NORETURN
3445 die(const char *err, ...)
3451 va_start(args, err);
3452 fputs("tig: ", stderr);
3453 vfprintf(stderr, err, args);
3454 fputs("\n", stderr);
3461 main(int argc, char *argv[])
3464 enum request request;
3467 signal(SIGINT, quit);
3469 if (setlocale(LC_ALL, "")) {
3470 string_copy(opt_codeset, nl_langinfo(CODESET));
3473 if (load_options() == ERR)
3474 die("Failed to load user config.");
3476 /* Load the repo config file so options can be overwritten from
3477 * the command line. */
3478 if (load_repo_config() == ERR)
3479 die("Failed to load repo config.");
3481 if (!parse_options(argc, argv))
3484 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3485 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3486 if (opt_iconv == ICONV_NONE)
3487 die("Failed to initialize character set conversion");
3490 if (load_refs() == ERR)
3491 die("Failed to load refs.");
3493 /* Require a git repository unless when running in pager mode. */
3494 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3495 die("Not a git repository");
3497 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3498 view->cmd_env = getenv(view->cmd_env);
3500 request = opt_request;
3504 while (view_driver(display[current_view], request)) {
3508 foreach_view (view, i)
3511 /* Refresh, accept single keystroke of input */
3512 key = wgetch(status_win);
3514 request = get_keybinding(display[current_view]->keymap, key);
3516 /* Some low-level request handling. This keeps access to
3517 * status_win restricted. */
3521 char *cmd = read_prompt(":");
3523 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3524 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3525 opt_request = REQ_VIEW_DIFF;
3527 opt_request = REQ_VIEW_PAGER;
3536 case REQ_SEARCH_BACK:
3538 const char *prompt = request == REQ_SEARCH
3540 char *search = read_prompt(prompt);
3543 string_copy(opt_search, search);
3548 case REQ_SCREEN_RESIZE:
3552 getmaxyx(stdscr, height, width);
3554 /* Resize the status view and let the view driver take
3555 * care of resizing the displayed views. */
3556 wresize(status_win, 1, width);
3557 mvwin(status_win, height - 1, 0);
3558 wrefresh(status_win);