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 $(git rev-parse --git-dir) 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 --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;
529 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
537 * Line-oriented content detection.
541 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
542 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
543 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
544 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
545 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
546 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
547 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
549 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
550 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
555 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
556 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
557 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
558 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
559 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
562 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
563 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
564 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
566 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
567 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
568 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
570 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
571 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
572 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
573 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
574 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
575 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
576 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
577 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
578 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
579 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
580 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
581 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
584 #define LINE(type, line, fg, bg, attr) \
591 const char *name; /* Option name. */
592 int namelen; /* Size of option name. */
593 const char *line; /* The start of line to match. */
594 int linelen; /* Size of string to match. */
595 int fg, bg, attr; /* Color and text attributes for the lines. */
598 static struct line_info line_info[] = {
599 #define LINE(type, line, fg, bg, attr) \
600 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
605 static enum line_type
606 get_line_type(char *line)
608 int linelen = strlen(line);
611 for (type = 0; type < ARRAY_SIZE(line_info); type++)
612 /* Case insensitive search matches Signed-off-by lines better. */
613 if (linelen >= line_info[type].linelen &&
614 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
621 get_line_attr(enum line_type type)
623 assert(type < ARRAY_SIZE(line_info));
624 return COLOR_PAIR(type) | line_info[type].attr;
627 static struct line_info *
628 get_line_info(char *name, int namelen)
632 for (type = 0; type < ARRAY_SIZE(line_info); type++)
633 if (namelen == line_info[type].namelen &&
634 !string_enum_compare(line_info[type].name, name, namelen))
635 return &line_info[type];
643 int default_bg = COLOR_BLACK;
644 int default_fg = COLOR_WHITE;
649 if (use_default_colors() != ERR) {
654 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
655 struct line_info *info = &line_info[type];
656 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
657 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
659 init_pair(type, fg, bg);
667 unsigned int selected:1;
669 void *data; /* User data */
679 enum request request;
680 struct keybinding *next;
683 static struct keybinding default_keybindings[] = {
685 { 'm', REQ_VIEW_MAIN },
686 { 'd', REQ_VIEW_DIFF },
687 { 'l', REQ_VIEW_LOG },
688 { 't', REQ_VIEW_TREE },
689 { 'f', REQ_VIEW_BLOB },
690 { 'p', REQ_VIEW_PAGER },
691 { 'h', REQ_VIEW_HELP },
693 /* View manipulation */
694 { 'q', REQ_VIEW_CLOSE },
695 { KEY_TAB, REQ_VIEW_NEXT },
696 { KEY_RETURN, REQ_ENTER },
697 { KEY_UP, REQ_PREVIOUS },
698 { KEY_DOWN, REQ_NEXT },
700 /* Cursor navigation */
701 { 'k', REQ_MOVE_UP },
702 { 'j', REQ_MOVE_DOWN },
703 { KEY_HOME, REQ_MOVE_FIRST_LINE },
704 { KEY_END, REQ_MOVE_LAST_LINE },
705 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
706 { ' ', REQ_MOVE_PAGE_DOWN },
707 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
708 { 'b', REQ_MOVE_PAGE_UP },
709 { '-', REQ_MOVE_PAGE_UP },
712 { KEY_IC, REQ_SCROLL_LINE_UP },
713 { KEY_DC, REQ_SCROLL_LINE_DOWN },
714 { 'w', REQ_SCROLL_PAGE_UP },
715 { 's', REQ_SCROLL_PAGE_DOWN },
719 { '?', REQ_SEARCH_BACK },
720 { 'n', REQ_FIND_NEXT },
721 { 'N', REQ_FIND_PREV },
725 { 'z', REQ_STOP_LOADING },
726 { 'v', REQ_SHOW_VERSION },
727 { 'r', REQ_SCREEN_REDRAW },
728 { '.', REQ_TOGGLE_LINENO },
729 { 'g', REQ_TOGGLE_REV_GRAPH },
732 /* Using the ncurses SIGWINCH handler. */
733 { KEY_RESIZE, REQ_SCREEN_RESIZE },
736 #define KEYMAP_INFO \
747 #define KEYMAP_(name) KEYMAP_##name
752 static struct int_map keymap_table[] = {
753 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
758 #define set_keymap(map, name) \
759 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
761 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
764 add_keybinding(enum keymap keymap, enum request request, int key)
766 struct keybinding *keybinding;
768 keybinding = calloc(1, sizeof(*keybinding));
770 die("Failed to allocate keybinding");
772 keybinding->alias = key;
773 keybinding->request = request;
774 keybinding->next = keybindings[keymap];
775 keybindings[keymap] = keybinding;
778 /* Looks for a key binding first in the given map, then in the generic map, and
779 * lastly in the default keybindings. */
781 get_keybinding(enum keymap keymap, int key)
783 struct keybinding *kbd;
786 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
787 if (kbd->alias == key)
790 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
791 if (kbd->alias == key)
794 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
795 if (default_keybindings[i].alias == key)
796 return default_keybindings[i].request;
798 return (enum request) key;
807 static struct key key_table[] = {
808 { "Enter", KEY_RETURN },
810 { "Backspace", KEY_BACKSPACE },
812 { "Escape", KEY_ESC },
813 { "Left", KEY_LEFT },
814 { "Right", KEY_RIGHT },
816 { "Down", KEY_DOWN },
817 { "Insert", KEY_IC },
818 { "Delete", KEY_DC },
820 { "Home", KEY_HOME },
822 { "PageUp", KEY_PPAGE },
823 { "PageDown", KEY_NPAGE },
833 { "F10", KEY_F(10) },
834 { "F11", KEY_F(11) },
835 { "F12", KEY_F(12) },
839 get_key_value(const char *name)
843 for (i = 0; i < ARRAY_SIZE(key_table); i++)
844 if (!strcasecmp(key_table[i].name, name))
845 return key_table[i].value;
847 if (strlen(name) == 1 && isprint(*name))
854 get_key(enum request request)
856 static char buf[BUFSIZ];
857 static char key_char[] = "'X'";
864 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
865 struct keybinding *keybinding = &default_keybindings[i];
869 if (keybinding->request != request)
872 for (key = 0; key < ARRAY_SIZE(key_table); key++)
873 if (key_table[key].value == keybinding->alias)
874 seq = key_table[key].name;
877 keybinding->alias < 127 &&
878 isprint(keybinding->alias)) {
879 key_char[1] = (char) keybinding->alias;
886 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
887 return "Too many keybindings!";
896 * User config file handling.
899 static struct int_map color_map[] = {
900 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
912 #define set_color(color, name) \
913 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
915 static struct int_map attr_map[] = {
916 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
926 #define set_attribute(attr, name) \
927 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
929 static int config_lineno;
930 static bool config_errors;
931 static char *config_msg;
933 /* Wants: object fgcolor bgcolor [attr] */
935 option_color_command(int argc, char *argv[])
937 struct line_info *info;
939 if (argc != 3 && argc != 4) {
940 config_msg = "Wrong number of arguments given to color command";
944 info = get_line_info(argv[0], strlen(argv[0]));
946 config_msg = "Unknown color name";
950 if (set_color(&info->fg, argv[1]) == ERR ||
951 set_color(&info->bg, argv[2]) == ERR) {
952 config_msg = "Unknown color";
956 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
957 config_msg = "Unknown attribute";
964 /* Wants: name = value */
966 option_set_command(int argc, char *argv[])
969 config_msg = "Wrong number of arguments given to set command";
973 if (strcmp(argv[1], "=")) {
974 config_msg = "No value assigned";
978 if (!strcmp(argv[0], "show-rev-graph")) {
979 opt_rev_graph = (!strcmp(argv[2], "1") ||
980 !strcmp(argv[2], "true") ||
981 !strcmp(argv[2], "yes"));
985 if (!strcmp(argv[0], "line-number-interval")) {
986 opt_num_interval = atoi(argv[2]);
990 if (!strcmp(argv[0], "tab-size")) {
991 opt_tab_size = atoi(argv[2]);
995 if (!strcmp(argv[0], "commit-encoding")) {
997 int delimiter = *arg;
1000 switch (delimiter) {
1003 for (arg++, i = 0; arg[i]; i++)
1004 if (arg[i] == delimiter) {
1009 string_copy(opt_encoding, arg);
1014 config_msg = "Unknown variable name";
1018 /* Wants: mode request key */
1020 option_bind_command(int argc, char *argv[])
1022 enum request request;
1027 config_msg = "Wrong number of arguments given to bind command";
1031 if (set_keymap(&keymap, argv[0]) == ERR) {
1032 config_msg = "Unknown key map";
1036 key = get_key_value(argv[1]);
1038 config_msg = "Unknown key";
1042 request = get_request(argv[2]);
1043 if (request == REQ_UNKNOWN) {
1044 config_msg = "Unknown request name";
1048 add_keybinding(keymap, request, key);
1054 set_option(char *opt, char *value)
1061 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1062 argv[argc++] = value;
1069 while (isspace(*value))
1073 if (!strcmp(opt, "color"))
1074 return option_color_command(argc, argv);
1076 if (!strcmp(opt, "set"))
1077 return option_set_command(argc, argv);
1079 if (!strcmp(opt, "bind"))
1080 return option_bind_command(argc, argv);
1082 config_msg = "Unknown option command";
1087 read_option(char *opt, int optlen, char *value, int valuelen)
1092 config_msg = "Internal error";
1094 /* Check for comment markers, since read_properties() will
1095 * only ensure opt and value are split at first " \t". */
1096 optlen = strcspn(opt, "#");
1100 if (opt[optlen] != 0) {
1101 config_msg = "No option value";
1105 /* Look for comment endings in the value. */
1106 int len = strcspn(value, "#");
1108 if (len < valuelen) {
1110 value[valuelen] = 0;
1113 status = set_option(opt, value);
1116 if (status == ERR) {
1117 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1118 config_lineno, optlen, opt, config_msg);
1119 config_errors = TRUE;
1122 /* Always keep going if errors are encountered. */
1129 char *home = getenv("HOME");
1130 char buf[SIZEOF_STR];
1134 config_errors = FALSE;
1136 if (!home || !string_format(buf, "%s/.tigrc", home))
1139 /* It's ok that the file doesn't exist. */
1140 file = fopen(buf, "r");
1144 if (read_properties(file, " \t", read_option) == ERR ||
1145 config_errors == TRUE)
1146 fprintf(stderr, "Errors while loading %s.\n", buf);
1159 /* The display array of active views and the index of the current view. */
1160 static struct view *display[2];
1161 static unsigned int current_view;
1163 /* Reading from the prompt? */
1164 static bool input_mode = FALSE;
1166 #define foreach_displayed_view(view, i) \
1167 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1169 #define displayed_views() (display[1] != NULL ? 2 : 1)
1171 /* Current head and commit ID */
1172 static char ref_blob[SIZEOF_REF] = "";
1173 static char ref_commit[SIZEOF_REF] = "HEAD";
1174 static char ref_head[SIZEOF_REF] = "HEAD";
1177 const char *name; /* View name */
1178 const char *cmd_fmt; /* Default command line format */
1179 const char *cmd_env; /* Command line set via environment */
1180 const char *id; /* Points to either of ref_{head,commit,blob} */
1182 struct view_ops *ops; /* View operations */
1184 enum keymap keymap; /* What keymap does this view have */
1186 char cmd[SIZEOF_STR]; /* Command buffer */
1187 char ref[SIZEOF_REF]; /* Hovered commit reference */
1188 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1190 int height, width; /* The width and height of the main window */
1191 WINDOW *win; /* The main window */
1192 WINDOW *title; /* The title window living below the main window */
1195 unsigned long offset; /* Offset of the window top */
1196 unsigned long lineno; /* Current line number */
1199 char grep[SIZEOF_STR]; /* Search string */
1200 regex_t *regex; /* Pre-compiled regex */
1202 /* If non-NULL, points to the view that opened this view. If this view
1203 * is closed tig will switch back to the parent view. */
1204 struct view *parent;
1207 unsigned long lines; /* Total number of lines */
1208 struct line *line; /* Line index */
1209 unsigned long line_size;/* Total number of allocated lines */
1210 unsigned int digits; /* Number of digits in the lines member. */
1218 /* What type of content being displayed. Used in the title bar. */
1220 /* Draw one line; @lineno must be < view->height. */
1221 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1222 /* Read one line; updates view->line. */
1223 bool (*read)(struct view *view, char *data);
1224 /* Depending on view, change display based on current line. */
1225 bool (*enter)(struct view *view, struct line *line);
1226 /* Search for regex in a line. */
1227 bool (*grep)(struct view *view, struct line *line);
1229 void (*select)(struct view *view, struct line *line);
1232 static struct view_ops pager_ops;
1233 static struct view_ops main_ops;
1234 static struct view_ops tree_ops;
1235 static struct view_ops blob_ops;
1237 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1238 { name, cmd, #env, ref, ops, map}
1240 #define VIEW_(id, name, ops, ref) \
1241 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1244 static struct view views[] = {
1245 VIEW_(MAIN, "main", &main_ops, ref_head),
1246 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1247 VIEW_(LOG, "log", &pager_ops, ref_head),
1248 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1249 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1250 VIEW_(HELP, "help", &pager_ops, "static"),
1251 VIEW_(PAGER, "pager", &pager_ops, "static"),
1254 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1256 #define foreach_view(view, i) \
1257 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1259 #define view_is_displayed(view) \
1260 (view == display[0] || view == display[1])
1263 draw_view_line(struct view *view, unsigned int lineno)
1266 bool selected = (view->offset + lineno == view->lineno);
1269 assert(view_is_displayed(view));
1271 if (view->offset + lineno >= view->lines)
1274 line = &view->line[view->offset + lineno];
1277 line->selected = TRUE;
1278 view->ops->select(view, line);
1279 } else if (line->selected) {
1280 line->selected = FALSE;
1281 wmove(view->win, lineno, 0);
1282 wclrtoeol(view->win);
1285 scrollok(view->win, FALSE);
1286 draw_ok = view->ops->draw(view, line, lineno, selected);
1287 scrollok(view->win, TRUE);
1293 redraw_view_from(struct view *view, int lineno)
1295 assert(0 <= lineno && lineno < view->height);
1297 for (; lineno < view->height; lineno++) {
1298 if (!draw_view_line(view, lineno))
1302 redrawwin(view->win);
1304 wnoutrefresh(view->win);
1306 wrefresh(view->win);
1310 redraw_view(struct view *view)
1313 redraw_view_from(view, 0);
1318 update_view_title(struct view *view)
1320 char buf[SIZEOF_STR];
1321 char state[SIZEOF_STR];
1322 size_t bufpos = 0, statelen = 0;
1324 assert(view_is_displayed(view));
1326 if (view->lines || view->pipe) {
1327 unsigned int view_lines = view->offset + view->height;
1328 unsigned int lines = view->lines
1329 ? MIN(view_lines, view->lines) * 100 / view->lines
1332 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1339 time_t secs = time(NULL) - view->start_time;
1341 /* Three git seconds are a long time ... */
1343 string_format_from(state, &statelen, " %lds", secs);
1347 string_format_from(buf, &bufpos, "[%s]", view->name);
1348 if (*view->ref && bufpos < view->width) {
1349 size_t refsize = strlen(view->ref);
1350 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1352 if (minsize < view->width)
1353 refsize = view->width - minsize + 7;
1354 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1357 if (statelen && bufpos < view->width) {
1358 string_format_from(buf, &bufpos, " %s", state);
1361 if (view == display[current_view])
1362 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1364 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1366 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1367 wclrtoeol(view->title);
1368 wmove(view->title, 0, view->width - 1);
1371 wnoutrefresh(view->title);
1373 wrefresh(view->title);
1377 resize_display(void)
1380 struct view *base = display[0];
1381 struct view *view = display[1] ? display[1] : display[0];
1383 /* Setup window dimensions */
1385 getmaxyx(stdscr, base->height, base->width);
1387 /* Make room for the status window. */
1391 /* Horizontal split. */
1392 view->width = base->width;
1393 view->height = SCALE_SPLIT_VIEW(base->height);
1394 base->height -= view->height;
1396 /* Make room for the title bar. */
1400 /* Make room for the title bar. */
1405 foreach_displayed_view (view, i) {
1407 view->win = newwin(view->height, 0, offset, 0);
1409 die("Failed to create %s view", view->name);
1411 scrollok(view->win, TRUE);
1413 view->title = newwin(1, 0, offset + view->height, 0);
1415 die("Failed to create title window");
1418 wresize(view->win, view->height, view->width);
1419 mvwin(view->win, offset, 0);
1420 mvwin(view->title, offset + view->height, 0);
1423 offset += view->height + 1;
1428 redraw_display(void)
1433 foreach_displayed_view (view, i) {
1435 update_view_title(view);
1440 update_display_cursor(struct view *view)
1442 /* Move the cursor to the right-most column of the cursor line.
1444 * XXX: This could turn out to be a bit expensive, but it ensures that
1445 * the cursor does not jump around. */
1447 wmove(view->win, view->lineno - view->offset, view->width - 1);
1448 wrefresh(view->win);
1456 /* Scrolling backend */
1458 do_scroll_view(struct view *view, int lines)
1460 bool redraw_current_line = FALSE;
1462 /* The rendering expects the new offset. */
1463 view->offset += lines;
1465 assert(0 <= view->offset && view->offset < view->lines);
1468 /* Move current line into the view. */
1469 if (view->lineno < view->offset) {
1470 view->lineno = view->offset;
1471 redraw_current_line = TRUE;
1472 } else if (view->lineno >= view->offset + view->height) {
1473 view->lineno = view->offset + view->height - 1;
1474 redraw_current_line = TRUE;
1477 assert(view->offset <= view->lineno && view->lineno < view->lines);
1479 /* Redraw the whole screen if scrolling is pointless. */
1480 if (view->height < ABS(lines)) {
1484 int line = lines > 0 ? view->height - lines : 0;
1485 int end = line + ABS(lines);
1487 wscrl(view->win, lines);
1489 for (; line < end; line++) {
1490 if (!draw_view_line(view, line))
1494 if (redraw_current_line)
1495 draw_view_line(view, view->lineno - view->offset);
1498 redrawwin(view->win);
1499 wrefresh(view->win);
1503 /* Scroll frontend */
1505 scroll_view(struct view *view, enum request request)
1509 assert(view_is_displayed(view));
1512 case REQ_SCROLL_PAGE_DOWN:
1513 lines = view->height;
1514 case REQ_SCROLL_LINE_DOWN:
1515 if (view->offset + lines > view->lines)
1516 lines = view->lines - view->offset;
1518 if (lines == 0 || view->offset + view->height >= view->lines) {
1519 report("Cannot scroll beyond the last line");
1524 case REQ_SCROLL_PAGE_UP:
1525 lines = view->height;
1526 case REQ_SCROLL_LINE_UP:
1527 if (lines > view->offset)
1528 lines = view->offset;
1531 report("Cannot scroll beyond the first line");
1539 die("request %d not handled in switch", request);
1542 do_scroll_view(view, lines);
1547 move_view(struct view *view, enum request request)
1549 int scroll_steps = 0;
1553 case REQ_MOVE_FIRST_LINE:
1554 steps = -view->lineno;
1557 case REQ_MOVE_LAST_LINE:
1558 steps = view->lines - view->lineno - 1;
1561 case REQ_MOVE_PAGE_UP:
1562 steps = view->height > view->lineno
1563 ? -view->lineno : -view->height;
1566 case REQ_MOVE_PAGE_DOWN:
1567 steps = view->lineno + view->height >= view->lines
1568 ? view->lines - view->lineno - 1 : view->height;
1580 die("request %d not handled in switch", request);
1583 if (steps <= 0 && view->lineno == 0) {
1584 report("Cannot move beyond the first line");
1587 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1588 report("Cannot move beyond the last line");
1592 /* Move the current line */
1593 view->lineno += steps;
1594 assert(0 <= view->lineno && view->lineno < view->lines);
1596 /* Check whether the view needs to be scrolled */
1597 if (view->lineno < view->offset ||
1598 view->lineno >= view->offset + view->height) {
1599 scroll_steps = steps;
1600 if (steps < 0 && -steps > view->offset) {
1601 scroll_steps = -view->offset;
1603 } else if (steps > 0) {
1604 if (view->lineno == view->lines - 1 &&
1605 view->lines > view->height) {
1606 scroll_steps = view->lines - view->offset - 1;
1607 if (scroll_steps >= view->height)
1608 scroll_steps -= view->height - 1;
1613 if (!view_is_displayed(view)) {
1614 view->offset += steps;
1615 view->ops->select(view, &view->line[view->lineno]);
1619 /* Repaint the old "current" line if we be scrolling */
1620 if (ABS(steps) < view->height)
1621 draw_view_line(view, view->lineno - steps - view->offset);
1624 do_scroll_view(view, scroll_steps);
1628 /* Draw the current line */
1629 draw_view_line(view, view->lineno - view->offset);
1631 redrawwin(view->win);
1632 wrefresh(view->win);
1641 static void search_view(struct view *view, enum request request);
1644 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1646 assert(view_is_displayed(view));
1648 if (!view->ops->grep(view, line))
1651 if (lineno - view->offset >= view->height) {
1652 view->offset = lineno;
1653 view->lineno = lineno;
1657 unsigned long old_lineno = view->lineno - view->offset;
1659 view->lineno = lineno;
1660 draw_view_line(view, old_lineno);
1662 draw_view_line(view, view->lineno - view->offset);
1663 redrawwin(view->win);
1664 wrefresh(view->win);
1667 report("Line %ld matches '%s'", lineno + 1, view->grep);
1672 find_next(struct view *view, enum request request)
1674 unsigned long lineno = view->lineno;
1679 report("No previous search");
1681 search_view(view, request);
1691 case REQ_SEARCH_BACK:
1700 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1701 lineno += direction;
1703 /* Note, lineno is unsigned long so will wrap around in which case it
1704 * will become bigger than view->lines. */
1705 for (; lineno < view->lines; lineno += direction) {
1706 struct line *line = &view->line[lineno];
1708 if (find_next_line(view, lineno, line))
1712 report("No match found for '%s'", view->grep);
1716 search_view(struct view *view, enum request request)
1721 regfree(view->regex);
1724 view->regex = calloc(1, sizeof(*view->regex));
1729 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1730 if (regex_err != 0) {
1731 char buf[SIZEOF_STR] = "unknown error";
1733 regerror(regex_err, view->regex, buf, sizeof(buf));
1734 report("Search failed: %s", buf);
1738 string_copy(view->grep, opt_search);
1740 find_next(view, request);
1744 * Incremental updating
1748 end_update(struct view *view)
1752 set_nonblocking_input(FALSE);
1753 if (view->pipe == stdin)
1761 begin_update(struct view *view)
1763 const char *id = view->id;
1769 string_copy(view->cmd, opt_cmd);
1771 /* When running random commands, the view ref could have become
1772 * invalid so clear it. */
1775 } else if (view == VIEW(REQ_VIEW_TREE)) {
1776 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1778 if (strcmp(view->vid, view->id))
1781 if (!string_format(view->cmd, format, id, opt_path))
1785 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1787 if (!string_format(view->cmd, format, id, id, id, id, id))
1791 /* Special case for the pager view. */
1793 view->pipe = opt_pipe;
1796 view->pipe = popen(view->cmd, "r");
1802 set_nonblocking_input(TRUE);
1807 string_copy(view->vid, id);
1812 for (i = 0; i < view->lines; i++)
1813 if (view->line[i].data)
1814 free(view->line[i].data);
1820 view->start_time = time(NULL);
1825 static struct line *
1826 realloc_lines(struct view *view, size_t line_size)
1828 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1834 view->line_size = line_size;
1839 update_view(struct view *view)
1841 char in_buffer[BUFSIZ];
1842 char out_buffer[BUFSIZ * 2];
1844 /* The number of lines to read. If too low it will cause too much
1845 * redrawing (and possible flickering), if too high responsiveness
1847 unsigned long lines = view->height;
1848 int redraw_from = -1;
1853 /* Only redraw if lines are visible. */
1854 if (view->offset + view->height >= view->lines)
1855 redraw_from = view->lines - view->offset;
1857 /* FIXME: This is probably not perfect for backgrounded views. */
1858 if (!realloc_lines(view, view->lines + lines))
1861 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1862 size_t linelen = strlen(line);
1865 line[linelen - 1] = 0;
1867 if (opt_iconv != ICONV_NONE) {
1869 size_t inlen = linelen;
1871 char *outbuf = out_buffer;
1872 size_t outlen = sizeof(out_buffer);
1876 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1877 if (ret != (size_t) -1) {
1879 linelen = strlen(out_buffer);
1883 if (!view->ops->read(view, line))
1893 lines = view->lines;
1894 for (digits = 0; lines; digits++)
1897 /* Keep the displayed view in sync with line number scaling. */
1898 if (digits != view->digits) {
1899 view->digits = digits;
1904 if (!view_is_displayed(view))
1907 if (view == VIEW(REQ_VIEW_TREE)) {
1908 /* Clear the view and redraw everything since the tree sorting
1909 * might have rearranged things. */
1912 } else if (redraw_from >= 0) {
1913 /* If this is an incremental update, redraw the previous line
1914 * since for commits some members could have changed when
1915 * loading the main view. */
1916 if (redraw_from > 0)
1919 /* Incrementally draw avoids flickering. */
1920 redraw_view_from(view, redraw_from);
1923 /* Update the title _after_ the redraw so that if the redraw picks up a
1924 * commit reference in view->ref it'll be available here. */
1925 update_view_title(view);
1928 if (ferror(view->pipe)) {
1929 report("Failed to read: %s", strerror(errno));
1932 } else if (feof(view->pipe)) {
1940 report("Allocation failure");
1952 static void open_help_view(struct view *view)
1955 int lines = ARRAY_SIZE(req_info) + 2;
1958 if (view->lines > 0)
1961 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1962 if (!req_info[i].request)
1965 view->line = calloc(lines, sizeof(*view->line));
1967 report("Allocation failure");
1971 view->ops->read(view, "Quick reference for tig keybindings:");
1973 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1976 if (!req_info[i].request) {
1977 view->ops->read(view, "");
1978 view->ops->read(view, req_info[i].help);
1982 key = get_key(req_info[i].request);
1983 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1986 view->ops->read(view, buf);
1991 OPEN_DEFAULT = 0, /* Use default view switching. */
1992 OPEN_SPLIT = 1, /* Split current view. */
1993 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1994 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1998 open_view(struct view *prev, enum request request, enum open_flags flags)
2000 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2001 bool split = !!(flags & OPEN_SPLIT);
2002 bool reload = !!(flags & OPEN_RELOAD);
2003 struct view *view = VIEW(request);
2004 int nviews = displayed_views();
2005 struct view *base_view = display[0];
2007 if (view == prev && nviews == 1 && !reload) {
2008 report("Already in %s view", view->name);
2012 if (view == VIEW(REQ_VIEW_HELP)) {
2013 open_help_view(view);
2015 } else if ((reload || strcmp(view->vid, view->id)) &&
2016 !begin_update(view)) {
2017 report("Failed to load %s view", view->name);
2026 /* Maximize the current view. */
2027 memset(display, 0, sizeof(display));
2029 display[current_view] = view;
2032 /* Resize the view when switching between split- and full-screen,
2033 * or when switching between two different full-screen views. */
2034 if (nviews != displayed_views() ||
2035 (nviews == 1 && base_view != display[0]))
2038 if (split && prev->lineno - prev->offset >= prev->height) {
2039 /* Take the title line into account. */
2040 int lines = prev->lineno - prev->offset - prev->height + 1;
2042 /* Scroll the view that was split if the current line is
2043 * outside the new limited view. */
2044 do_scroll_view(prev, lines);
2047 if (prev && view != prev) {
2048 if (split && !backgrounded) {
2049 /* "Blur" the previous view. */
2050 update_view_title(prev);
2053 view->parent = prev;
2056 if (view->pipe && view->lines == 0) {
2057 /* Clear the old view and let the incremental updating refill
2066 /* If the view is backgrounded the above calls to report()
2067 * won't redraw the view title. */
2069 update_view_title(view);
2074 * User request switch noodle
2078 view_driver(struct view *view, enum request request)
2085 case REQ_MOVE_PAGE_UP:
2086 case REQ_MOVE_PAGE_DOWN:
2087 case REQ_MOVE_FIRST_LINE:
2088 case REQ_MOVE_LAST_LINE:
2089 move_view(view, request);
2092 case REQ_SCROLL_LINE_DOWN:
2093 case REQ_SCROLL_LINE_UP:
2094 case REQ_SCROLL_PAGE_DOWN:
2095 case REQ_SCROLL_PAGE_UP:
2096 scroll_view(view, request);
2101 report("No file chosen, press 't' to open tree view");
2110 case REQ_VIEW_PAGER:
2111 open_view(view, request, OPEN_DEFAULT);
2116 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2118 if ((view == VIEW(REQ_VIEW_DIFF) &&
2119 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2120 (view == VIEW(REQ_VIEW_BLOB) &&
2121 view->parent == VIEW(REQ_VIEW_TREE))) {
2122 view = view->parent;
2123 move_view(view, request);
2124 if (view_is_displayed(view))
2125 update_view_title(view);
2127 move_view(view, request);
2134 report("Nothing to enter");
2137 return view->ops->enter(view, &view->line[view->lineno]);
2141 int nviews = displayed_views();
2142 int next_view = (current_view + 1) % nviews;
2144 if (next_view == current_view) {
2145 report("Only one view is displayed");
2149 current_view = next_view;
2150 /* Blur out the title of the previous view. */
2151 update_view_title(view);
2155 case REQ_TOGGLE_LINENO:
2156 opt_line_number = !opt_line_number;
2160 case REQ_TOGGLE_REV_GRAPH:
2161 opt_rev_graph = !opt_rev_graph;
2166 /* Always reload^Wrerun commands from the prompt. */
2167 open_view(view, opt_request, OPEN_RELOAD);
2171 case REQ_SEARCH_BACK:
2172 search_view(view, request);
2177 find_next(view, request);
2180 case REQ_STOP_LOADING:
2181 for (i = 0; i < ARRAY_SIZE(views); i++) {
2184 report("Stopped loading the %s view", view->name),
2189 case REQ_SHOW_VERSION:
2190 report("%s (built %s)", VERSION, __DATE__);
2193 case REQ_SCREEN_RESIZE:
2196 case REQ_SCREEN_REDRAW:
2204 case REQ_VIEW_CLOSE:
2205 /* XXX: Mark closed views by letting view->parent point to the
2206 * view itself. Parents to closed view should never be
2209 view->parent->parent != view->parent) {
2210 memset(display, 0, sizeof(display));
2212 display[current_view] = view->parent;
2213 view->parent = view;
2223 /* An unknown key will show most commonly used commands. */
2224 report("Unknown key, press 'h' for help");
2237 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2239 char *text = line->data;
2240 enum line_type type = line->type;
2241 int textlen = strlen(text);
2244 wmove(view->win, lineno, 0);
2248 wchgat(view->win, -1, 0, type, NULL);
2251 attr = get_line_attr(type);
2252 wattrset(view->win, attr);
2254 if (opt_line_number || opt_tab_size < TABSIZE) {
2255 static char spaces[] = " ";
2256 int col_offset = 0, col = 0;
2258 if (opt_line_number) {
2259 unsigned long real_lineno = view->offset + lineno + 1;
2261 if (real_lineno == 1 ||
2262 (real_lineno % opt_num_interval) == 0) {
2263 wprintw(view->win, "%.*d", view->digits, real_lineno);
2266 waddnstr(view->win, spaces,
2267 MIN(view->digits, STRING_SIZE(spaces)));
2269 waddstr(view->win, ": ");
2270 col_offset = view->digits + 2;
2273 while (text && col_offset + col < view->width) {
2274 int cols_max = view->width - col_offset - col;
2278 if (*text == '\t') {
2280 assert(sizeof(spaces) > TABSIZE);
2282 cols = opt_tab_size - (col % opt_tab_size);
2285 text = strchr(text, '\t');
2286 cols = line ? text - pos : strlen(pos);
2289 waddnstr(view->win, pos, MIN(cols, cols_max));
2294 int col = 0, pos = 0;
2296 for (; pos < textlen && col < view->width; pos++, col++)
2297 if (text[pos] == '\t')
2298 col += TABSIZE - (col % TABSIZE) - 1;
2300 waddnstr(view->win, text, pos);
2307 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2309 char refbuf[SIZEOF_STR];
2313 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2316 pipe = popen(refbuf, "r");
2320 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2321 ref = chomp_string(ref);
2327 /* This is the only fatal call, since it can "corrupt" the buffer. */
2328 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2335 add_pager_refs(struct view *view, struct line *line)
2337 char buf[SIZEOF_STR];
2338 char *commit_id = line->data + STRING_SIZE("commit ");
2340 size_t bufpos = 0, refpos = 0;
2341 const char *sep = "Refs: ";
2342 bool is_tag = FALSE;
2344 assert(line->type == LINE_COMMIT);
2346 refs = get_refs(commit_id);
2348 if (view == VIEW(REQ_VIEW_DIFF))
2349 goto try_add_describe_ref;
2354 struct ref *ref = refs[refpos];
2355 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2357 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2362 } while (refs[refpos++]->next);
2364 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2365 try_add_describe_ref:
2366 /* Add <tag>-g<commit_id> "fake" reference. */
2367 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2374 if (!realloc_lines(view, view->line_size + 1))
2377 line = &view->line[view->lines];
2378 line->data = strdup(buf);
2382 line->type = LINE_PP_REFS;
2387 pager_read(struct view *view, char *data)
2389 struct line *line = &view->line[view->lines];
2391 line->data = strdup(data);
2395 line->type = get_line_type(line->data);
2398 if (line->type == LINE_COMMIT &&
2399 (view == VIEW(REQ_VIEW_DIFF) ||
2400 view == VIEW(REQ_VIEW_LOG)))
2401 add_pager_refs(view, line);
2407 pager_enter(struct view *view, struct line *line)
2411 if (line->type == LINE_COMMIT &&
2412 (view == VIEW(REQ_VIEW_LOG) ||
2413 view == VIEW(REQ_VIEW_PAGER))) {
2414 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2418 /* Always scroll the view even if it was split. That way
2419 * you can use Enter to scroll through the log view and
2420 * split open each commit diff. */
2421 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2423 /* FIXME: A minor workaround. Scrolling the view will call report("")
2424 * but if we are scrolling a non-current view this won't properly
2425 * update the view title. */
2427 update_view_title(view);
2433 pager_grep(struct view *view, struct line *line)
2436 char *text = line->data;
2441 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2448 pager_select(struct view *view, struct line *line)
2450 if (line->type == LINE_COMMIT) {
2451 char *text = line->data;
2453 string_copy(view->ref, text + STRING_SIZE("commit "));
2454 string_copy(ref_commit, view->ref);
2458 static struct view_ops pager_ops = {
2472 /* Parse output from git-ls-tree(1):
2474 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2475 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2476 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2477 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2480 #define SIZEOF_TREE_ATTR \
2481 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2483 #define TREE_UP_FORMAT "040000 tree %s\t.."
2486 tree_compare_entry(enum line_type type1, char *name1,
2487 enum line_type type2, char *name2)
2489 if (type1 != type2) {
2490 if (type1 == LINE_TREE_DIR)
2495 return strcmp(name1, name2);
2499 tree_read(struct view *view, char *text)
2501 size_t textlen = strlen(text);
2502 char buf[SIZEOF_STR];
2504 enum line_type type;
2505 bool first_read = view->lines == 0;
2507 if (textlen <= SIZEOF_TREE_ATTR)
2510 type = text[STRING_SIZE("100644 ")] == 't'
2511 ? LINE_TREE_DIR : LINE_TREE_FILE;
2514 /* Add path info line */
2515 if (string_format(buf, "Directory path /%s", opt_path) &&
2516 realloc_lines(view, view->line_size + 1) &&
2517 pager_read(view, buf))
2518 view->line[view->lines - 1].type = LINE_DEFAULT;
2522 /* Insert "link" to parent directory. */
2524 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2525 realloc_lines(view, view->line_size + 1) &&
2526 pager_read(view, buf))
2527 view->line[view->lines - 1].type = LINE_TREE_DIR;
2532 /* Strip the path part ... */
2534 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2535 size_t striplen = strlen(opt_path);
2536 char *path = text + SIZEOF_TREE_ATTR;
2538 if (pathlen > striplen)
2539 memmove(path, path + striplen,
2540 pathlen - striplen + 1);
2543 /* Skip "Directory ..." and ".." line. */
2544 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2545 struct line *line = &view->line[pos];
2546 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2547 char *path2 = text + SIZEOF_TREE_ATTR;
2548 int cmp = tree_compare_entry(line->type, path1, type, path2);
2553 text = strdup(text);
2557 if (view->lines > pos)
2558 memmove(&view->line[pos + 1], &view->line[pos],
2559 (view->lines - pos) * sizeof(*line));
2561 line = &view->line[pos];
2568 if (!pager_read(view, text))
2571 /* Move the current line to the first tree entry. */
2575 view->line[view->lines - 1].type = type;
2580 tree_enter(struct view *view, struct line *line)
2582 enum open_flags flags;
2583 enum request request;
2585 switch (line->type) {
2587 /* Depending on whether it is a subdir or parent (updir?) link
2588 * mangle the path buffer. */
2589 if (line == &view->line[1] && *opt_path) {
2590 size_t path_len = strlen(opt_path);
2591 char *dirsep = opt_path + path_len - 1;
2593 while (dirsep > opt_path && dirsep[-1] != '/')
2599 size_t pathlen = strlen(opt_path);
2600 size_t origlen = pathlen;
2601 char *data = line->data;
2602 char *basename = data + SIZEOF_TREE_ATTR;
2604 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2605 opt_path[origlen] = 0;
2610 /* Trees and subtrees share the same ID, so they are not not
2611 * unique like blobs. */
2612 flags = OPEN_RELOAD;
2613 request = REQ_VIEW_TREE;
2616 case LINE_TREE_FILE:
2617 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2618 request = REQ_VIEW_BLOB;
2625 open_view(view, request, flags);
2631 tree_select(struct view *view, struct line *line)
2633 char *text = line->data;
2635 text += STRING_SIZE("100644 blob ");
2637 if (line->type == LINE_TREE_FILE) {
2638 string_ncopy(ref_blob, text, 40);
2639 /* Also update the blob view's ref, since all there must always
2641 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2643 } else if (line->type != LINE_TREE_DIR) {
2647 string_ncopy(view->ref, text, 40);
2650 static struct view_ops tree_ops = {
2660 blob_read(struct view *view, char *line)
2662 bool state = pager_read(view, line);
2665 view->line[view->lines - 1].type = LINE_DEFAULT;
2670 static struct view_ops blob_ops = {
2685 char id[SIZEOF_REV]; /* SHA1 ID. */
2686 char title[128]; /* First line of the commit message. */
2687 char author[75]; /* Author of the commit. */
2688 struct tm time; /* Date from the author ident. */
2689 struct ref **refs; /* Repository references. */
2690 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2691 size_t graph_size; /* The width of the graph array. */
2695 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2697 char buf[DATE_COLS + 1];
2698 struct commit *commit = line->data;
2699 enum line_type type;
2705 if (!*commit->author)
2708 wmove(view->win, lineno, col);
2712 wattrset(view->win, get_line_attr(type));
2713 wchgat(view->win, -1, 0, type, NULL);
2716 type = LINE_MAIN_COMMIT;
2717 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2720 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2721 waddnstr(view->win, buf, timelen);
2722 waddstr(view->win, " ");
2725 wmove(view->win, lineno, col);
2726 if (type != LINE_CURSOR)
2727 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2730 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2732 authorlen = strlen(commit->author);
2733 if (authorlen > AUTHOR_COLS - 2) {
2734 authorlen = AUTHOR_COLS - 2;
2740 waddnstr(view->win, commit->author, authorlen);
2741 if (type != LINE_CURSOR)
2742 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2743 waddch(view->win, '~');
2745 waddstr(view->win, commit->author);
2749 if (type != LINE_CURSOR)
2750 wattrset(view->win, A_NORMAL);
2752 if (opt_rev_graph && commit->graph_size) {
2755 wmove(view->win, lineno, col);
2756 /* Using waddch() instead of waddnstr() ensures that
2757 * they'll be rendered correctly for the cursor line. */
2758 for (i = 0; i < commit->graph_size; i++)
2759 waddch(view->win, commit->graph[i]);
2761 col += commit->graph_size + 1;
2764 wmove(view->win, lineno, col);
2770 if (type == LINE_CURSOR)
2772 else if (commit->refs[i]->tag)
2773 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2775 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2776 waddstr(view->win, "[");
2777 waddstr(view->win, commit->refs[i]->name);
2778 waddstr(view->win, "]");
2779 if (type != LINE_CURSOR)
2780 wattrset(view->win, A_NORMAL);
2781 waddstr(view->win, " ");
2782 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2783 } while (commit->refs[i++]->next);
2786 if (type != LINE_CURSOR)
2787 wattrset(view->win, get_line_attr(type));
2790 int titlelen = strlen(commit->title);
2792 if (col + titlelen > view->width)
2793 titlelen = view->width - col;
2795 waddnstr(view->win, commit->title, titlelen);
2801 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2803 main_read(struct view *view, char *line)
2805 enum line_type type = get_line_type(line);
2806 struct commit *commit = view->lines
2807 ? view->line[view->lines - 1].data : NULL;
2811 commit = calloc(1, sizeof(struct commit));
2815 line += STRING_SIZE("commit ");
2817 view->line[view->lines++].data = commit;
2818 string_copy(commit->id, line);
2819 commit->refs = get_refs(commit->id);
2820 commit->graph[commit->graph_size++] = ACS_LTEE;
2825 /* Parse author lines where the name may be empty:
2826 * author <email@address.tld> 1138474660 +0100
2828 char *ident = line + STRING_SIZE("author ");
2829 char *nameend = strchr(ident, '<');
2830 char *emailend = strchr(ident, '>');
2832 if (!commit || !nameend || !emailend)
2835 *nameend = *emailend = 0;
2836 ident = chomp_string(ident);
2838 ident = chomp_string(nameend + 1);
2843 string_copy(commit->author, ident);
2845 /* Parse epoch and timezone */
2846 if (emailend[1] == ' ') {
2847 char *secs = emailend + 2;
2848 char *zone = strchr(secs, ' ');
2849 time_t time = (time_t) atol(secs);
2851 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2855 tz = ('0' - zone[1]) * 60 * 60 * 10;
2856 tz += ('0' - zone[2]) * 60 * 60;
2857 tz += ('0' - zone[3]) * 60;
2858 tz += ('0' - zone[4]) * 60;
2866 gmtime_r(&time, &commit->time);
2874 /* Fill in the commit title if it has not already been set. */
2875 if (commit->title[0])
2878 /* Require titles to start with a non-space character at the
2879 * offset used by git log. */
2880 if (strncmp(line, " ", 4))
2883 /* Well, if the title starts with a whitespace character,
2884 * try to be forgiving. Otherwise we end up with no title. */
2885 while (isspace(*line))
2889 /* FIXME: More graceful handling of titles; append "..." to
2890 * shortened titles, etc. */
2892 string_copy(commit->title, line);
2899 main_enter(struct view *view, struct line *line)
2901 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2903 open_view(view, REQ_VIEW_DIFF, flags);
2908 main_grep(struct view *view, struct line *line)
2910 struct commit *commit = line->data;
2911 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2912 char buf[DATE_COLS + 1];
2915 for (state = S_TITLE; state < S_END; state++) {
2919 case S_TITLE: text = commit->title; break;
2920 case S_AUTHOR: text = commit->author; break;
2922 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2931 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2939 main_select(struct view *view, struct line *line)
2941 struct commit *commit = line->data;
2943 string_copy(view->ref, commit->id);
2944 string_copy(ref_commit, view->ref);
2947 static struct view_ops main_ops = {
2958 * Unicode / UTF-8 handling
2960 * NOTE: Much of the following code for dealing with unicode is derived from
2961 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2962 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2965 /* I've (over)annotated a lot of code snippets because I am not entirely
2966 * confident that the approach taken by this small UTF-8 interface is correct.
2970 unicode_width(unsigned long c)
2973 (c <= 0x115f /* Hangul Jamo */
2976 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2978 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2979 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2980 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2981 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2982 || (c >= 0xffe0 && c <= 0xffe6)
2983 || (c >= 0x20000 && c <= 0x2fffd)
2984 || (c >= 0x30000 && c <= 0x3fffd)))
2990 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2991 * Illegal bytes are set one. */
2992 static const unsigned char utf8_bytes[256] = {
2993 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2994 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2995 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2996 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
2997 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 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,
3000 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,
3003 /* Decode UTF-8 multi-byte representation into a unicode character. */
3004 static inline unsigned long
3005 utf8_to_unicode(const char *string, size_t length)
3007 unsigned long unicode;
3011 unicode = string[0];
3014 unicode = (string[0] & 0x1f) << 6;
3015 unicode += (string[1] & 0x3f);
3018 unicode = (string[0] & 0x0f) << 12;
3019 unicode += ((string[1] & 0x3f) << 6);
3020 unicode += (string[2] & 0x3f);
3023 unicode = (string[0] & 0x0f) << 18;
3024 unicode += ((string[1] & 0x3f) << 12);
3025 unicode += ((string[2] & 0x3f) << 6);
3026 unicode += (string[3] & 0x3f);
3029 unicode = (string[0] & 0x0f) << 24;
3030 unicode += ((string[1] & 0x3f) << 18);
3031 unicode += ((string[2] & 0x3f) << 12);
3032 unicode += ((string[3] & 0x3f) << 6);
3033 unicode += (string[4] & 0x3f);
3036 unicode = (string[0] & 0x01) << 30;
3037 unicode += ((string[1] & 0x3f) << 24);
3038 unicode += ((string[2] & 0x3f) << 18);
3039 unicode += ((string[3] & 0x3f) << 12);
3040 unicode += ((string[4] & 0x3f) << 6);
3041 unicode += (string[5] & 0x3f);
3044 die("Invalid unicode length");
3047 /* Invalid characters could return the special 0xfffd value but NUL
3048 * should be just as good. */
3049 return unicode > 0xffff ? 0 : unicode;
3052 /* Calculates how much of string can be shown within the given maximum width
3053 * and sets trimmed parameter to non-zero value if all of string could not be
3056 * Additionally, adds to coloffset how many many columns to move to align with
3057 * the expected position. Takes into account how multi-byte and double-width
3058 * characters will effect the cursor position.
3060 * Returns the number of bytes to output from string to satisfy max_width. */
3062 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3064 const char *start = string;
3065 const char *end = strchr(string, '\0');
3071 while (string < end) {
3072 int c = *(unsigned char *) string;
3073 unsigned char bytes = utf8_bytes[c];
3075 unsigned long unicode;
3077 if (string + bytes > end)
3080 /* Change representation to figure out whether
3081 * it is a single- or double-width character. */
3083 unicode = utf8_to_unicode(string, bytes);
3084 /* FIXME: Graceful handling of invalid unicode character. */
3088 ucwidth = unicode_width(unicode);
3090 if (width > max_width) {
3095 /* The column offset collects the differences between the
3096 * number of bytes encoding a character and the number of
3097 * columns will be used for rendering said character.
3099 * So if some character A is encoded in 2 bytes, but will be
3100 * represented on the screen using only 1 byte this will and up
3101 * adding 1 to the multi-byte column offset.
3103 * Assumes that no double-width character can be encoding in
3104 * less than two bytes. */
3105 if (bytes > ucwidth)
3106 mbwidth += bytes - ucwidth;
3111 *coloffset += mbwidth;
3113 return string - start;
3121 /* Whether or not the curses interface has been initialized. */
3122 static bool cursed = FALSE;
3124 /* The status window is used for polling keystrokes. */
3125 static WINDOW *status_win;
3127 static bool status_empty = TRUE;
3129 /* Update status and title window. */
3131 report(const char *msg, ...)
3133 struct view *view = display[current_view];
3138 if (!status_empty || *msg) {
3141 va_start(args, msg);
3143 wmove(status_win, 0, 0);
3145 vwprintw(status_win, msg, args);
3146 status_empty = FALSE;
3148 status_empty = TRUE;
3150 wclrtoeol(status_win);
3151 wrefresh(status_win);
3156 update_view_title(view);
3157 update_display_cursor(view);
3160 /* Controls when nodelay should be in effect when polling user input. */
3162 set_nonblocking_input(bool loading)
3164 static unsigned int loading_views;
3166 if ((loading == FALSE && loading_views-- == 1) ||
3167 (loading == TRUE && loading_views++ == 0))
3168 nodelay(status_win, loading);
3176 /* Initialize the curses library */
3177 if (isatty(STDIN_FILENO)) {
3178 cursed = !!initscr();
3180 /* Leave stdin and stdout alone when acting as a pager. */
3181 FILE *io = fopen("/dev/tty", "r+");
3184 die("Failed to open /dev/tty");
3185 cursed = !!newterm(NULL, io, io);
3189 die("Failed to initialize curses");
3191 nonl(); /* Tell curses not to do NL->CR/NL on output */
3192 cbreak(); /* Take input chars one at a time, no wait for \n */
3193 noecho(); /* Don't echo input */
3194 leaveok(stdscr, TRUE);
3199 getmaxyx(stdscr, y, x);
3200 status_win = newwin(1, 0, y - 1, 0);
3202 die("Failed to create status window");
3204 /* Enable keyboard mapping */
3205 keypad(status_win, TRUE);
3206 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3210 read_prompt(const char *prompt)
3212 enum { READING, STOP, CANCEL } status = READING;
3213 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3216 while (status == READING) {
3222 foreach_view (view, i)
3227 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3228 wclrtoeol(status_win);
3230 /* Refresh, accept single keystroke of input */
3231 key = wgetch(status_win);
3236 status = pos ? STOP : CANCEL;
3254 if (pos >= sizeof(buf)) {
3255 report("Input string too long");
3260 buf[pos++] = (char) key;
3264 /* Clear the status window */
3265 status_empty = FALSE;
3268 if (status == CANCEL)
3277 * Repository references
3280 static struct ref *refs;
3281 static size_t refs_size;
3283 /* Id <-> ref store */
3284 static struct ref ***id_refs;
3285 static size_t id_refs_size;
3287 static struct ref **
3290 struct ref ***tmp_id_refs;
3291 struct ref **ref_list = NULL;
3292 size_t ref_list_size = 0;
3295 for (i = 0; i < id_refs_size; i++)
3296 if (!strcmp(id, id_refs[i][0]->id))
3299 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3303 id_refs = tmp_id_refs;
3305 for (i = 0; i < refs_size; i++) {
3308 if (strcmp(id, refs[i].id))
3311 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3319 if (ref_list_size > 0)
3320 ref_list[ref_list_size - 1]->next = 1;
3321 ref_list[ref_list_size] = &refs[i];
3323 /* XXX: The properties of the commit chains ensures that we can
3324 * safely modify the shared ref. The repo references will
3325 * always be similar for the same id. */
3326 ref_list[ref_list_size]->next = 0;
3331 id_refs[id_refs_size++] = ref_list;
3337 read_ref(char *id, int idlen, char *name, int namelen)
3342 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3343 /* Commits referenced by tags has "^{}" appended. */
3344 if (name[namelen - 1] != '}')
3347 while (namelen > 0 && name[namelen] != '^')
3351 namelen -= STRING_SIZE("refs/tags/");
3352 name += STRING_SIZE("refs/tags/");
3354 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3355 namelen -= STRING_SIZE("refs/heads/");
3356 name += STRING_SIZE("refs/heads/");
3358 } else if (!strcmp(name, "HEAD")) {
3362 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3366 ref = &refs[refs_size++];
3367 ref->name = malloc(namelen + 1);
3371 strncpy(ref->name, name, namelen);
3372 ref->name[namelen] = 0;
3374 string_copy(ref->id, id);
3382 const char *cmd_env = getenv("TIG_LS_REMOTE");
3383 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3385 return read_properties(popen(cmd, "r"), "\t", read_ref);
3389 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3391 if (!strcmp(name, "i18n.commitencoding"))
3392 string_copy(opt_encoding, value);
3398 load_repo_config(void)
3400 return read_properties(popen("git repo-config --list", "r"),
3401 "=", read_repo_config_option);
3405 read_properties(FILE *pipe, const char *separators,
3406 int (*read_property)(char *, int, char *, int))
3408 char buffer[BUFSIZ];
3415 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3420 name = chomp_string(name);
3421 namelen = strcspn(name, separators);
3423 if (name[namelen]) {
3425 value = chomp_string(name + namelen + 1);
3426 valuelen = strlen(value);
3433 state = read_property(name, namelen, value, valuelen);
3436 if (state != ERR && ferror(pipe))
3449 static void __NORETURN
3452 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3458 static void __NORETURN
3459 die(const char *err, ...)
3465 va_start(args, err);
3466 fputs("tig: ", stderr);
3467 vfprintf(stderr, err, args);
3468 fputs("\n", stderr);
3475 main(int argc, char *argv[])
3478 enum request request;
3481 signal(SIGINT, quit);
3483 if (setlocale(LC_ALL, "")) {
3484 string_copy(opt_codeset, nl_langinfo(CODESET));
3487 if (load_options() == ERR)
3488 die("Failed to load user config.");
3490 /* Load the repo config file so options can be overwritten from
3491 * the command line. */
3492 if (load_repo_config() == ERR)
3493 die("Failed to load repo config.");
3495 if (!parse_options(argc, argv))
3498 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3499 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3500 if (opt_iconv == ICONV_NONE)
3501 die("Failed to initialize character set conversion");
3504 if (load_refs() == ERR)
3505 die("Failed to load refs.");
3507 /* Require a git repository unless when running in pager mode. */
3508 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3509 die("Not a git repository");
3511 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3512 view->cmd_env = getenv(view->cmd_env);
3514 request = opt_request;
3518 while (view_driver(display[current_view], request)) {
3522 foreach_view (view, i)
3525 /* Refresh, accept single keystroke of input */
3526 key = wgetch(status_win);
3528 /* wgetch() with nodelay() enabled returns ERR when there's no
3535 request = get_keybinding(display[current_view]->keymap, key);
3537 /* Some low-level request handling. This keeps access to
3538 * status_win restricted. */
3542 char *cmd = read_prompt(":");
3544 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3545 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3546 opt_request = REQ_VIEW_DIFF;
3548 opt_request = REQ_VIEW_PAGER;
3557 case REQ_SEARCH_BACK:
3559 const char *prompt = request == REQ_SEARCH
3561 char *search = read_prompt(prompt);
3564 string_copy(opt_search, search);
3569 case REQ_SCREEN_RESIZE:
3573 getmaxyx(stdscr, height, width);
3575 /* Resize the status view and let the view driver take
3576 * care of resizing the displayed views. */
3577 wresize(status_win, 1, width);
3578 mvwin(status_win, height - 1, 0);
3579 wrefresh(status_win);