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 (opt[0] && opt[0] != '-')
457 if (!strcmp(opt, "-l")) {
458 opt_request = REQ_VIEW_LOG;
462 if (!strcmp(opt, "-d")) {
463 opt_request = REQ_VIEW_DIFF;
467 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
468 opt_line_number = TRUE;
472 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
473 opt_tab_size = MIN(opt_tab_size, TABSIZE);
477 if (check_option(opt, 'v', "version", OPT_NONE)) {
478 printf("tig version %s\n", VERSION);
482 if (check_option(opt, 'h', "help", OPT_NONE)) {
487 if (!strcmp(opt, "--")) {
492 if (!strcmp(opt, "log") ||
493 !strcmp(opt, "diff") ||
494 !strcmp(opt, "show")) {
495 opt_request = opt[0] == 'l'
496 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
500 die("unknown option '%s'\n\n%s", opt, usage);
503 if (!isatty(STDIN_FILENO)) {
504 opt_request = REQ_VIEW_PAGER;
507 } else if (i < argc) {
510 if (opt_request == REQ_VIEW_MAIN)
511 /* XXX: This is vulnerable to the user overriding
512 * options required for the main view parser. */
513 string_copy(opt_cmd, "git log --stat --pretty=raw");
515 string_copy(opt_cmd, "git");
516 buf_size = strlen(opt_cmd);
518 while (buf_size < sizeof(opt_cmd) && i < argc) {
519 opt_cmd[buf_size++] = ' ';
520 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
523 if (buf_size >= sizeof(opt_cmd))
524 die("command too long");
526 opt_cmd[buf_size] = 0;
530 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
538 * Line-oriented content detection.
542 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
543 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
544 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
545 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
546 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
547 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
549 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
550 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
556 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
557 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
558 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
563 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
564 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
566 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
567 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
568 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
570 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
571 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
572 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
574 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
575 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
576 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
577 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
578 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
579 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
580 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
581 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
582 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
585 #define LINE(type, line, fg, bg, attr) \
592 const char *name; /* Option name. */
593 int namelen; /* Size of option name. */
594 const char *line; /* The start of line to match. */
595 int linelen; /* Size of string to match. */
596 int fg, bg, attr; /* Color and text attributes for the lines. */
599 static struct line_info line_info[] = {
600 #define LINE(type, line, fg, bg, attr) \
601 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
606 static enum line_type
607 get_line_type(char *line)
609 int linelen = strlen(line);
612 for (type = 0; type < ARRAY_SIZE(line_info); type++)
613 /* Case insensitive search matches Signed-off-by lines better. */
614 if (linelen >= line_info[type].linelen &&
615 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
622 get_line_attr(enum line_type type)
624 assert(type < ARRAY_SIZE(line_info));
625 return COLOR_PAIR(type) | line_info[type].attr;
628 static struct line_info *
629 get_line_info(char *name, int namelen)
633 for (type = 0; type < ARRAY_SIZE(line_info); type++)
634 if (namelen == line_info[type].namelen &&
635 !string_enum_compare(line_info[type].name, name, namelen))
636 return &line_info[type];
644 int default_bg = COLOR_BLACK;
645 int default_fg = COLOR_WHITE;
650 if (use_default_colors() != ERR) {
655 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
656 struct line_info *info = &line_info[type];
657 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
658 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
660 init_pair(type, fg, bg);
668 unsigned int selected:1;
670 void *data; /* User data */
680 enum request request;
681 struct keybinding *next;
684 static struct keybinding default_keybindings[] = {
686 { 'm', REQ_VIEW_MAIN },
687 { 'd', REQ_VIEW_DIFF },
688 { 'l', REQ_VIEW_LOG },
689 { 't', REQ_VIEW_TREE },
690 { 'f', REQ_VIEW_BLOB },
691 { 'p', REQ_VIEW_PAGER },
692 { 'h', REQ_VIEW_HELP },
694 /* View manipulation */
695 { 'q', REQ_VIEW_CLOSE },
696 { KEY_TAB, REQ_VIEW_NEXT },
697 { KEY_RETURN, REQ_ENTER },
698 { KEY_UP, REQ_PREVIOUS },
699 { KEY_DOWN, REQ_NEXT },
701 /* Cursor navigation */
702 { 'k', REQ_MOVE_UP },
703 { 'j', REQ_MOVE_DOWN },
704 { KEY_HOME, REQ_MOVE_FIRST_LINE },
705 { KEY_END, REQ_MOVE_LAST_LINE },
706 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
707 { ' ', REQ_MOVE_PAGE_DOWN },
708 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
709 { 'b', REQ_MOVE_PAGE_UP },
710 { '-', REQ_MOVE_PAGE_UP },
713 { KEY_IC, REQ_SCROLL_LINE_UP },
714 { KEY_DC, REQ_SCROLL_LINE_DOWN },
715 { 'w', REQ_SCROLL_PAGE_UP },
716 { 's', REQ_SCROLL_PAGE_DOWN },
720 { '?', REQ_SEARCH_BACK },
721 { 'n', REQ_FIND_NEXT },
722 { 'N', REQ_FIND_PREV },
726 { 'z', REQ_STOP_LOADING },
727 { 'v', REQ_SHOW_VERSION },
728 { 'r', REQ_SCREEN_REDRAW },
729 { '.', REQ_TOGGLE_LINENO },
730 { 'g', REQ_TOGGLE_REV_GRAPH },
733 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
736 /* Using the ncurses SIGWINCH handler. */
737 { KEY_RESIZE, REQ_SCREEN_RESIZE },
740 #define KEYMAP_INFO \
751 #define KEYMAP_(name) KEYMAP_##name
756 static struct int_map keymap_table[] = {
757 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
762 #define set_keymap(map, name) \
763 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
765 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
768 add_keybinding(enum keymap keymap, enum request request, int key)
770 struct keybinding *keybinding = keybindings[keymap];
773 keybinding = calloc(1, sizeof(*keybinding));
775 die("Failed to allocate keybinding");
777 keybinding->alias = key;
778 keybinding->request = request;
779 keybinding->next = keybindings[keymap];
780 keybindings[keymap] = keybinding;
783 /* Looks for a key binding first in the given map, then in the generic map, and
784 * lastly in the default keybindings. */
786 get_keybinding(enum keymap keymap, int key)
788 struct keybinding *kbd;
791 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
792 if (kbd->alias == key)
795 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
796 if (kbd->alias == key)
799 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
800 if (default_keybindings[i].alias == key)
801 return default_keybindings[i].request;
803 return (enum request) key;
812 static struct key key_table[] = {
813 { "Enter", KEY_RETURN },
815 { "Backspace", KEY_BACKSPACE },
817 { "Escape", KEY_ESC },
818 { "Left", KEY_LEFT },
819 { "Right", KEY_RIGHT },
821 { "Down", KEY_DOWN },
822 { "Insert", KEY_IC },
823 { "Delete", KEY_DC },
825 { "Home", KEY_HOME },
827 { "PageUp", KEY_PPAGE },
828 { "PageDown", KEY_NPAGE },
838 { "F10", KEY_F(10) },
839 { "F11", KEY_F(11) },
840 { "F12", KEY_F(12) },
844 get_key_value(const char *name)
848 for (i = 0; i < ARRAY_SIZE(key_table); i++)
849 if (!strcasecmp(key_table[i].name, name))
850 return key_table[i].value;
852 if (strlen(name) == 1 && isprint(*name))
859 get_key(enum request request)
861 static char buf[BUFSIZ];
862 static char key_char[] = "'X'";
869 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
870 struct keybinding *keybinding = &default_keybindings[i];
874 if (keybinding->request != request)
877 for (key = 0; key < ARRAY_SIZE(key_table); key++)
878 if (key_table[key].value == keybinding->alias)
879 seq = key_table[key].name;
882 keybinding->alias < 127 &&
883 isprint(keybinding->alias)) {
884 key_char[1] = (char) keybinding->alias;
891 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
892 return "Too many keybindings!";
901 * User config file handling.
904 static struct int_map color_map[] = {
905 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
917 #define set_color(color, name) \
918 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
920 static struct int_map attr_map[] = {
921 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
931 #define set_attribute(attr, name) \
932 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
934 static int config_lineno;
935 static bool config_errors;
936 static char *config_msg;
938 /* Wants: object fgcolor bgcolor [attr] */
940 option_color_command(int argc, char *argv[])
942 struct line_info *info;
944 if (argc != 3 && argc != 4) {
945 config_msg = "Wrong number of arguments given to color command";
949 info = get_line_info(argv[0], strlen(argv[0]));
951 config_msg = "Unknown color name";
955 if (set_color(&info->fg, argv[1]) == ERR ||
956 set_color(&info->bg, argv[2]) == ERR) {
957 config_msg = "Unknown color";
961 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
962 config_msg = "Unknown attribute";
969 /* Wants: name = value */
971 option_set_command(int argc, char *argv[])
974 config_msg = "Wrong number of arguments given to set command";
978 if (strcmp(argv[1], "=")) {
979 config_msg = "No value assigned";
983 if (!strcmp(argv[0], "show-rev-graph")) {
984 opt_rev_graph = (!strcmp(argv[2], "1") ||
985 !strcmp(argv[2], "true") ||
986 !strcmp(argv[2], "yes"));
990 if (!strcmp(argv[0], "line-number-interval")) {
991 opt_num_interval = atoi(argv[2]);
995 if (!strcmp(argv[0], "tab-size")) {
996 opt_tab_size = atoi(argv[2]);
1000 if (!strcmp(argv[0], "commit-encoding")) {
1001 char *arg = argv[2];
1002 int delimiter = *arg;
1005 switch (delimiter) {
1008 for (arg++, i = 0; arg[i]; i++)
1009 if (arg[i] == delimiter) {
1014 string_copy(opt_encoding, arg);
1019 config_msg = "Unknown variable name";
1023 /* Wants: mode request key */
1025 option_bind_command(int argc, char *argv[])
1027 enum request request;
1032 config_msg = "Wrong number of arguments given to bind command";
1036 if (set_keymap(&keymap, argv[0]) == ERR) {
1037 config_msg = "Unknown key map";
1041 key = get_key_value(argv[1]);
1043 config_msg = "Unknown key";
1047 request = get_request(argv[2]);
1048 if (request == REQ_UNKNOWN) {
1049 config_msg = "Unknown request name";
1053 add_keybinding(keymap, request, key);
1059 set_option(char *opt, char *value)
1066 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1067 argv[argc++] = value;
1074 while (isspace(*value))
1078 if (!strcmp(opt, "color"))
1079 return option_color_command(argc, argv);
1081 if (!strcmp(opt, "set"))
1082 return option_set_command(argc, argv);
1084 if (!strcmp(opt, "bind"))
1085 return option_bind_command(argc, argv);
1087 config_msg = "Unknown option command";
1092 read_option(char *opt, int optlen, char *value, int valuelen)
1097 config_msg = "Internal error";
1099 /* Check for comment markers, since read_properties() will
1100 * only ensure opt and value are split at first " \t". */
1101 optlen = strcspn(opt, "#");
1105 if (opt[optlen] != 0) {
1106 config_msg = "No option value";
1110 /* Look for comment endings in the value. */
1111 int len = strcspn(value, "#");
1113 if (len < valuelen) {
1115 value[valuelen] = 0;
1118 status = set_option(opt, value);
1121 if (status == ERR) {
1122 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1123 config_lineno, optlen, opt, config_msg);
1124 config_errors = TRUE;
1127 /* Always keep going if errors are encountered. */
1134 char *home = getenv("HOME");
1135 char buf[SIZEOF_STR];
1139 config_errors = FALSE;
1141 if (!home || !string_format(buf, "%s/.tigrc", home))
1144 /* It's ok that the file doesn't exist. */
1145 file = fopen(buf, "r");
1149 if (read_properties(file, " \t", read_option) == ERR ||
1150 config_errors == TRUE)
1151 fprintf(stderr, "Errors while loading %s.\n", buf);
1164 /* The display array of active views and the index of the current view. */
1165 static struct view *display[2];
1166 static unsigned int current_view;
1168 /* Reading from the prompt? */
1169 static bool input_mode = FALSE;
1171 #define foreach_displayed_view(view, i) \
1172 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1174 #define displayed_views() (display[1] != NULL ? 2 : 1)
1176 /* Current head and commit ID */
1177 static char ref_blob[SIZEOF_REF] = "";
1178 static char ref_commit[SIZEOF_REF] = "HEAD";
1179 static char ref_head[SIZEOF_REF] = "HEAD";
1182 const char *name; /* View name */
1183 const char *cmd_fmt; /* Default command line format */
1184 const char *cmd_env; /* Command line set via environment */
1185 const char *id; /* Points to either of ref_{head,commit,blob} */
1187 struct view_ops *ops; /* View operations */
1189 enum keymap keymap; /* What keymap does this view have */
1191 char cmd[SIZEOF_STR]; /* Command buffer */
1192 char ref[SIZEOF_REF]; /* Hovered commit reference */
1193 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1195 int height, width; /* The width and height of the main window */
1196 WINDOW *win; /* The main window */
1197 WINDOW *title; /* The title window living below the main window */
1200 unsigned long offset; /* Offset of the window top */
1201 unsigned long lineno; /* Current line number */
1204 char grep[SIZEOF_STR]; /* Search string */
1205 regex_t *regex; /* Pre-compiled regex */
1207 /* If non-NULL, points to the view that opened this view. If this view
1208 * is closed tig will switch back to the parent view. */
1209 struct view *parent;
1212 unsigned long lines; /* Total number of lines */
1213 struct line *line; /* Line index */
1214 unsigned long line_size;/* Total number of allocated lines */
1215 unsigned int digits; /* Number of digits in the lines member. */
1223 /* What type of content being displayed. Used in the title bar. */
1225 /* Draw one line; @lineno must be < view->height. */
1226 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1227 /* Read one line; updates view->line. */
1228 bool (*read)(struct view *view, char *data);
1229 /* Depending on view, change display based on current line. */
1230 bool (*enter)(struct view *view, struct line *line);
1231 /* Search for regex in a line. */
1232 bool (*grep)(struct view *view, struct line *line);
1234 void (*select)(struct view *view, struct line *line);
1237 static struct view_ops pager_ops;
1238 static struct view_ops main_ops;
1239 static struct view_ops tree_ops;
1240 static struct view_ops blob_ops;
1242 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1243 { name, cmd, #env, ref, ops, map}
1245 #define VIEW_(id, name, ops, ref) \
1246 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1249 static struct view views[] = {
1250 VIEW_(MAIN, "main", &main_ops, ref_head),
1251 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1252 VIEW_(LOG, "log", &pager_ops, ref_head),
1253 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1254 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1255 VIEW_(HELP, "help", &pager_ops, "static"),
1256 VIEW_(PAGER, "pager", &pager_ops, "static"),
1259 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1261 #define foreach_view(view, i) \
1262 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1264 #define view_is_displayed(view) \
1265 (view == display[0] || view == display[1])
1268 draw_view_line(struct view *view, unsigned int lineno)
1271 bool selected = (view->offset + lineno == view->lineno);
1274 assert(view_is_displayed(view));
1276 if (view->offset + lineno >= view->lines)
1279 line = &view->line[view->offset + lineno];
1282 line->selected = TRUE;
1283 view->ops->select(view, line);
1284 } else if (line->selected) {
1285 line->selected = FALSE;
1286 wmove(view->win, lineno, 0);
1287 wclrtoeol(view->win);
1290 scrollok(view->win, FALSE);
1291 draw_ok = view->ops->draw(view, line, lineno, selected);
1292 scrollok(view->win, TRUE);
1298 redraw_view_from(struct view *view, int lineno)
1300 assert(0 <= lineno && lineno < view->height);
1302 for (; lineno < view->height; lineno++) {
1303 if (!draw_view_line(view, lineno))
1307 redrawwin(view->win);
1309 wnoutrefresh(view->win);
1311 wrefresh(view->win);
1315 redraw_view(struct view *view)
1318 redraw_view_from(view, 0);
1323 update_view_title(struct view *view)
1325 char buf[SIZEOF_STR];
1326 char state[SIZEOF_STR];
1327 size_t bufpos = 0, statelen = 0;
1329 assert(view_is_displayed(view));
1331 if (view->lines || view->pipe) {
1332 unsigned int view_lines = view->offset + view->height;
1333 unsigned int lines = view->lines
1334 ? MIN(view_lines, view->lines) * 100 / view->lines
1337 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1344 time_t secs = time(NULL) - view->start_time;
1346 /* Three git seconds are a long time ... */
1348 string_format_from(state, &statelen, " %lds", secs);
1352 string_format_from(buf, &bufpos, "[%s]", view->name);
1353 if (*view->ref && bufpos < view->width) {
1354 size_t refsize = strlen(view->ref);
1355 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1357 if (minsize < view->width)
1358 refsize = view->width - minsize + 7;
1359 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1362 if (statelen && bufpos < view->width) {
1363 string_format_from(buf, &bufpos, " %s", state);
1366 if (view == display[current_view])
1367 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1369 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1371 werase(view->title);
1372 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1373 wmove(view->title, 0, view->width - 1);
1376 wnoutrefresh(view->title);
1378 wrefresh(view->title);
1382 resize_display(void)
1385 struct view *base = display[0];
1386 struct view *view = display[1] ? display[1] : display[0];
1388 /* Setup window dimensions */
1390 getmaxyx(stdscr, base->height, base->width);
1392 /* Make room for the status window. */
1396 /* Horizontal split. */
1397 view->width = base->width;
1398 view->height = SCALE_SPLIT_VIEW(base->height);
1399 base->height -= view->height;
1401 /* Make room for the title bar. */
1405 /* Make room for the title bar. */
1410 foreach_displayed_view (view, i) {
1412 view->win = newwin(view->height, 0, offset, 0);
1414 die("Failed to create %s view", view->name);
1416 scrollok(view->win, TRUE);
1418 view->title = newwin(1, 0, offset + view->height, 0);
1420 die("Failed to create title window");
1423 wresize(view->win, view->height, view->width);
1424 mvwin(view->win, offset, 0);
1425 mvwin(view->title, offset + view->height, 0);
1428 offset += view->height + 1;
1433 redraw_display(void)
1438 foreach_displayed_view (view, i) {
1440 update_view_title(view);
1445 update_display_cursor(struct view *view)
1447 /* Move the cursor to the right-most column of the cursor line.
1449 * XXX: This could turn out to be a bit expensive, but it ensures that
1450 * the cursor does not jump around. */
1452 wmove(view->win, view->lineno - view->offset, view->width - 1);
1453 wrefresh(view->win);
1461 /* Scrolling backend */
1463 do_scroll_view(struct view *view, int lines)
1465 bool redraw_current_line = FALSE;
1467 /* The rendering expects the new offset. */
1468 view->offset += lines;
1470 assert(0 <= view->offset && view->offset < view->lines);
1473 /* Move current line into the view. */
1474 if (view->lineno < view->offset) {
1475 view->lineno = view->offset;
1476 redraw_current_line = TRUE;
1477 } else if (view->lineno >= view->offset + view->height) {
1478 view->lineno = view->offset + view->height - 1;
1479 redraw_current_line = TRUE;
1482 assert(view->offset <= view->lineno && view->lineno < view->lines);
1484 /* Redraw the whole screen if scrolling is pointless. */
1485 if (view->height < ABS(lines)) {
1489 int line = lines > 0 ? view->height - lines : 0;
1490 int end = line + ABS(lines);
1492 wscrl(view->win, lines);
1494 for (; line < end; line++) {
1495 if (!draw_view_line(view, line))
1499 if (redraw_current_line)
1500 draw_view_line(view, view->lineno - view->offset);
1503 redrawwin(view->win);
1504 wrefresh(view->win);
1508 /* Scroll frontend */
1510 scroll_view(struct view *view, enum request request)
1514 assert(view_is_displayed(view));
1517 case REQ_SCROLL_PAGE_DOWN:
1518 lines = view->height;
1519 case REQ_SCROLL_LINE_DOWN:
1520 if (view->offset + lines > view->lines)
1521 lines = view->lines - view->offset;
1523 if (lines == 0 || view->offset + view->height >= view->lines) {
1524 report("Cannot scroll beyond the last line");
1529 case REQ_SCROLL_PAGE_UP:
1530 lines = view->height;
1531 case REQ_SCROLL_LINE_UP:
1532 if (lines > view->offset)
1533 lines = view->offset;
1536 report("Cannot scroll beyond the first line");
1544 die("request %d not handled in switch", request);
1547 do_scroll_view(view, lines);
1552 move_view(struct view *view, enum request request)
1554 int scroll_steps = 0;
1558 case REQ_MOVE_FIRST_LINE:
1559 steps = -view->lineno;
1562 case REQ_MOVE_LAST_LINE:
1563 steps = view->lines - view->lineno - 1;
1566 case REQ_MOVE_PAGE_UP:
1567 steps = view->height > view->lineno
1568 ? -view->lineno : -view->height;
1571 case REQ_MOVE_PAGE_DOWN:
1572 steps = view->lineno + view->height >= view->lines
1573 ? view->lines - view->lineno - 1 : view->height;
1585 die("request %d not handled in switch", request);
1588 if (steps <= 0 && view->lineno == 0) {
1589 report("Cannot move beyond the first line");
1592 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1593 report("Cannot move beyond the last line");
1597 /* Move the current line */
1598 view->lineno += steps;
1599 assert(0 <= view->lineno && view->lineno < view->lines);
1601 /* Check whether the view needs to be scrolled */
1602 if (view->lineno < view->offset ||
1603 view->lineno >= view->offset + view->height) {
1604 scroll_steps = steps;
1605 if (steps < 0 && -steps > view->offset) {
1606 scroll_steps = -view->offset;
1608 } else if (steps > 0) {
1609 if (view->lineno == view->lines - 1 &&
1610 view->lines > view->height) {
1611 scroll_steps = view->lines - view->offset - 1;
1612 if (scroll_steps >= view->height)
1613 scroll_steps -= view->height - 1;
1618 if (!view_is_displayed(view)) {
1619 view->offset += steps;
1620 view->ops->select(view, &view->line[view->lineno]);
1624 /* Repaint the old "current" line if we be scrolling */
1625 if (ABS(steps) < view->height)
1626 draw_view_line(view, view->lineno - steps - view->offset);
1629 do_scroll_view(view, scroll_steps);
1633 /* Draw the current line */
1634 draw_view_line(view, view->lineno - view->offset);
1636 redrawwin(view->win);
1637 wrefresh(view->win);
1646 static void search_view(struct view *view, enum request request);
1649 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1651 assert(view_is_displayed(view));
1653 if (!view->ops->grep(view, line))
1656 if (lineno - view->offset >= view->height) {
1657 view->offset = lineno;
1658 view->lineno = lineno;
1662 unsigned long old_lineno = view->lineno - view->offset;
1664 view->lineno = lineno;
1665 draw_view_line(view, old_lineno);
1667 draw_view_line(view, view->lineno - view->offset);
1668 redrawwin(view->win);
1669 wrefresh(view->win);
1672 report("Line %ld matches '%s'", lineno + 1, view->grep);
1677 find_next(struct view *view, enum request request)
1679 unsigned long lineno = view->lineno;
1684 report("No previous search");
1686 search_view(view, request);
1696 case REQ_SEARCH_BACK:
1705 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1706 lineno += direction;
1708 /* Note, lineno is unsigned long so will wrap around in which case it
1709 * will become bigger than view->lines. */
1710 for (; lineno < view->lines; lineno += direction) {
1711 struct line *line = &view->line[lineno];
1713 if (find_next_line(view, lineno, line))
1717 report("No match found for '%s'", view->grep);
1721 search_view(struct view *view, enum request request)
1726 regfree(view->regex);
1729 view->regex = calloc(1, sizeof(*view->regex));
1734 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1735 if (regex_err != 0) {
1736 char buf[SIZEOF_STR] = "unknown error";
1738 regerror(regex_err, view->regex, buf, sizeof(buf));
1739 report("Search failed: %s", buf);
1743 string_copy(view->grep, opt_search);
1745 find_next(view, request);
1749 * Incremental updating
1753 end_update(struct view *view)
1757 set_nonblocking_input(FALSE);
1758 if (view->pipe == stdin)
1766 begin_update(struct view *view)
1768 const char *id = view->id;
1774 string_copy(view->cmd, opt_cmd);
1776 /* When running random commands, the view ref could have become
1777 * invalid so clear it. */
1780 } else if (view == VIEW(REQ_VIEW_TREE)) {
1781 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1783 if (strcmp(view->vid, view->id))
1786 if (!string_format(view->cmd, format, id, opt_path))
1790 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1792 if (!string_format(view->cmd, format, id, id, id, id, id))
1796 /* Special case for the pager view. */
1798 view->pipe = opt_pipe;
1801 view->pipe = popen(view->cmd, "r");
1807 set_nonblocking_input(TRUE);
1812 string_copy(view->vid, id);
1817 for (i = 0; i < view->lines; i++)
1818 if (view->line[i].data)
1819 free(view->line[i].data);
1825 view->start_time = time(NULL);
1830 static struct line *
1831 realloc_lines(struct view *view, size_t line_size)
1833 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1839 view->line_size = line_size;
1844 update_view(struct view *view)
1846 char in_buffer[BUFSIZ];
1847 char out_buffer[BUFSIZ * 2];
1849 /* The number of lines to read. If too low it will cause too much
1850 * redrawing (and possible flickering), if too high responsiveness
1852 unsigned long lines = view->height;
1853 int redraw_from = -1;
1858 /* Only redraw if lines are visible. */
1859 if (view->offset + view->height >= view->lines)
1860 redraw_from = view->lines - view->offset;
1862 /* FIXME: This is probably not perfect for backgrounded views. */
1863 if (!realloc_lines(view, view->lines + lines))
1866 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1867 size_t linelen = strlen(line);
1870 line[linelen - 1] = 0;
1872 if (opt_iconv != ICONV_NONE) {
1874 size_t inlen = linelen;
1876 char *outbuf = out_buffer;
1877 size_t outlen = sizeof(out_buffer);
1881 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1882 if (ret != (size_t) -1) {
1884 linelen = strlen(out_buffer);
1888 if (!view->ops->read(view, line))
1898 lines = view->lines;
1899 for (digits = 0; lines; digits++)
1902 /* Keep the displayed view in sync with line number scaling. */
1903 if (digits != view->digits) {
1904 view->digits = digits;
1909 if (!view_is_displayed(view))
1912 if (view == VIEW(REQ_VIEW_TREE)) {
1913 /* Clear the view and redraw everything since the tree sorting
1914 * might have rearranged things. */
1917 } else if (redraw_from >= 0) {
1918 /* If this is an incremental update, redraw the previous line
1919 * since for commits some members could have changed when
1920 * loading the main view. */
1921 if (redraw_from > 0)
1924 /* Incrementally draw avoids flickering. */
1925 redraw_view_from(view, redraw_from);
1928 /* Update the title _after_ the redraw so that if the redraw picks up a
1929 * commit reference in view->ref it'll be available here. */
1930 update_view_title(view);
1933 if (ferror(view->pipe)) {
1934 report("Failed to read: %s", strerror(errno));
1937 } else if (feof(view->pipe)) {
1945 report("Allocation failure");
1957 static void open_help_view(struct view *view)
1960 int lines = ARRAY_SIZE(req_info) + 2;
1963 if (view->lines > 0)
1966 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1967 if (!req_info[i].request)
1970 view->line = calloc(lines, sizeof(*view->line));
1972 report("Allocation failure");
1976 view->ops->read(view, "Quick reference for tig keybindings:");
1978 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1981 if (!req_info[i].request) {
1982 view->ops->read(view, "");
1983 view->ops->read(view, req_info[i].help);
1987 key = get_key(req_info[i].request);
1988 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1991 view->ops->read(view, buf);
1996 OPEN_DEFAULT = 0, /* Use default view switching. */
1997 OPEN_SPLIT = 1, /* Split current view. */
1998 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1999 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2003 open_view(struct view *prev, enum request request, enum open_flags flags)
2005 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2006 bool split = !!(flags & OPEN_SPLIT);
2007 bool reload = !!(flags & OPEN_RELOAD);
2008 struct view *view = VIEW(request);
2009 int nviews = displayed_views();
2010 struct view *base_view = display[0];
2012 if (view == prev && nviews == 1 && !reload) {
2013 report("Already in %s view", view->name);
2017 if (view == VIEW(REQ_VIEW_HELP)) {
2018 open_help_view(view);
2020 } else if ((reload || strcmp(view->vid, view->id)) &&
2021 !begin_update(view)) {
2022 report("Failed to load %s view", view->name);
2031 /* Maximize the current view. */
2032 memset(display, 0, sizeof(display));
2034 display[current_view] = view;
2037 /* Resize the view when switching between split- and full-screen,
2038 * or when switching between two different full-screen views. */
2039 if (nviews != displayed_views() ||
2040 (nviews == 1 && base_view != display[0]))
2043 if (split && prev->lineno - prev->offset >= prev->height) {
2044 /* Take the title line into account. */
2045 int lines = prev->lineno - prev->offset - prev->height + 1;
2047 /* Scroll the view that was split if the current line is
2048 * outside the new limited view. */
2049 do_scroll_view(prev, lines);
2052 if (prev && view != prev) {
2053 if (split && !backgrounded) {
2054 /* "Blur" the previous view. */
2055 update_view_title(prev);
2058 view->parent = prev;
2061 if (view->pipe && view->lines == 0) {
2062 /* Clear the old view and let the incremental updating refill
2071 /* If the view is backgrounded the above calls to report()
2072 * won't redraw the view title. */
2074 update_view_title(view);
2079 * User request switch noodle
2083 view_driver(struct view *view, enum request request)
2090 case REQ_MOVE_PAGE_UP:
2091 case REQ_MOVE_PAGE_DOWN:
2092 case REQ_MOVE_FIRST_LINE:
2093 case REQ_MOVE_LAST_LINE:
2094 move_view(view, request);
2097 case REQ_SCROLL_LINE_DOWN:
2098 case REQ_SCROLL_LINE_UP:
2099 case REQ_SCROLL_PAGE_DOWN:
2100 case REQ_SCROLL_PAGE_UP:
2101 scroll_view(view, request);
2106 report("No file chosen, press 't' to open tree view");
2115 case REQ_VIEW_PAGER:
2116 open_view(view, request, OPEN_DEFAULT);
2121 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2123 if ((view == VIEW(REQ_VIEW_DIFF) &&
2124 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2125 (view == VIEW(REQ_VIEW_BLOB) &&
2126 view->parent == VIEW(REQ_VIEW_TREE))) {
2127 view = view->parent;
2128 move_view(view, request);
2129 if (view_is_displayed(view))
2130 update_view_title(view);
2132 move_view(view, request);
2139 report("Nothing to enter");
2142 return view->ops->enter(view, &view->line[view->lineno]);
2146 int nviews = displayed_views();
2147 int next_view = (current_view + 1) % nviews;
2149 if (next_view == current_view) {
2150 report("Only one view is displayed");
2154 current_view = next_view;
2155 /* Blur out the title of the previous view. */
2156 update_view_title(view);
2160 case REQ_TOGGLE_LINENO:
2161 opt_line_number = !opt_line_number;
2165 case REQ_TOGGLE_REV_GRAPH:
2166 opt_rev_graph = !opt_rev_graph;
2171 /* Always reload^Wrerun commands from the prompt. */
2172 open_view(view, opt_request, OPEN_RELOAD);
2176 case REQ_SEARCH_BACK:
2177 search_view(view, request);
2182 find_next(view, request);
2185 case REQ_STOP_LOADING:
2186 for (i = 0; i < ARRAY_SIZE(views); i++) {
2189 report("Stopped loading the %s view", view->name),
2194 case REQ_SHOW_VERSION:
2195 report("%s (built %s)", VERSION, __DATE__);
2198 case REQ_SCREEN_RESIZE:
2201 case REQ_SCREEN_REDRAW:
2209 case REQ_VIEW_CLOSE:
2210 /* XXX: Mark closed views by letting view->parent point to the
2211 * view itself. Parents to closed view should never be
2214 view->parent->parent != view->parent) {
2215 memset(display, 0, sizeof(display));
2217 display[current_view] = view->parent;
2218 view->parent = view;
2228 /* An unknown key will show most commonly used commands. */
2229 report("Unknown key, press 'h' for help");
2242 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2244 char *text = line->data;
2245 enum line_type type = line->type;
2246 int textlen = strlen(text);
2249 wmove(view->win, lineno, 0);
2253 wchgat(view->win, -1, 0, type, NULL);
2256 attr = get_line_attr(type);
2257 wattrset(view->win, attr);
2259 if (opt_line_number || opt_tab_size < TABSIZE) {
2260 static char spaces[] = " ";
2261 int col_offset = 0, col = 0;
2263 if (opt_line_number) {
2264 unsigned long real_lineno = view->offset + lineno + 1;
2266 if (real_lineno == 1 ||
2267 (real_lineno % opt_num_interval) == 0) {
2268 wprintw(view->win, "%.*d", view->digits, real_lineno);
2271 waddnstr(view->win, spaces,
2272 MIN(view->digits, STRING_SIZE(spaces)));
2274 waddstr(view->win, ": ");
2275 col_offset = view->digits + 2;
2278 while (text && col_offset + col < view->width) {
2279 int cols_max = view->width - col_offset - col;
2283 if (*text == '\t') {
2285 assert(sizeof(spaces) > TABSIZE);
2287 cols = opt_tab_size - (col % opt_tab_size);
2290 text = strchr(text, '\t');
2291 cols = line ? text - pos : strlen(pos);
2294 waddnstr(view->win, pos, MIN(cols, cols_max));
2299 int col = 0, pos = 0;
2301 for (; pos < textlen && col < view->width; pos++, col++)
2302 if (text[pos] == '\t')
2303 col += TABSIZE - (col % TABSIZE) - 1;
2305 waddnstr(view->win, text, pos);
2312 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2314 char refbuf[SIZEOF_STR];
2318 if (!string_format(refbuf, "git describe %s", commit_id))
2321 pipe = popen(refbuf, "r");
2325 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2326 ref = chomp_string(ref);
2332 /* This is the only fatal call, since it can "corrupt" the buffer. */
2333 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2340 add_pager_refs(struct view *view, struct line *line)
2342 char buf[SIZEOF_STR];
2343 char *commit_id = line->data + STRING_SIZE("commit ");
2345 size_t bufpos = 0, refpos = 0;
2346 const char *sep = "Refs: ";
2347 bool is_tag = FALSE;
2349 assert(line->type == LINE_COMMIT);
2351 refs = get_refs(commit_id);
2353 if (view == VIEW(REQ_VIEW_DIFF))
2354 goto try_add_describe_ref;
2359 struct ref *ref = refs[refpos];
2360 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2362 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2367 } while (refs[refpos++]->next);
2369 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2370 try_add_describe_ref:
2371 /* Add <tag>-g<commit_id> "fake" reference. */
2372 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2379 if (!realloc_lines(view, view->line_size + 1))
2382 line = &view->line[view->lines];
2383 line->data = strdup(buf);
2387 line->type = LINE_PP_REFS;
2392 pager_read(struct view *view, char *data)
2394 struct line *line = &view->line[view->lines];
2396 line->data = strdup(data);
2400 line->type = get_line_type(line->data);
2403 if (line->type == LINE_COMMIT &&
2404 (view == VIEW(REQ_VIEW_DIFF) ||
2405 view == VIEW(REQ_VIEW_LOG)))
2406 add_pager_refs(view, line);
2412 pager_enter(struct view *view, struct line *line)
2416 if (line->type == LINE_COMMIT &&
2417 (view == VIEW(REQ_VIEW_LOG) ||
2418 view == VIEW(REQ_VIEW_PAGER))) {
2419 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2423 /* Always scroll the view even if it was split. That way
2424 * you can use Enter to scroll through the log view and
2425 * split open each commit diff. */
2426 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2428 /* FIXME: A minor workaround. Scrolling the view will call report("")
2429 * but if we are scrolling a non-current view this won't properly
2430 * update the view title. */
2432 update_view_title(view);
2438 pager_grep(struct view *view, struct line *line)
2441 char *text = line->data;
2446 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2453 pager_select(struct view *view, struct line *line)
2455 if (line->type == LINE_COMMIT) {
2456 char *text = line->data;
2458 string_copy(view->ref, text + STRING_SIZE("commit "));
2459 string_copy(ref_commit, view->ref);
2463 static struct view_ops pager_ops = {
2477 /* Parse output from git-ls-tree(1):
2479 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2480 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2481 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2482 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2485 #define SIZEOF_TREE_ATTR \
2486 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2488 #define TREE_UP_FORMAT "040000 tree %s\t.."
2491 tree_compare_entry(enum line_type type1, char *name1,
2492 enum line_type type2, char *name2)
2494 if (type1 != type2) {
2495 if (type1 == LINE_TREE_DIR)
2500 return strcmp(name1, name2);
2504 tree_read(struct view *view, char *text)
2506 size_t textlen = strlen(text);
2507 char buf[SIZEOF_STR];
2509 enum line_type type;
2510 bool first_read = view->lines == 0;
2512 if (textlen <= SIZEOF_TREE_ATTR)
2515 type = text[STRING_SIZE("100644 ")] == 't'
2516 ? LINE_TREE_DIR : LINE_TREE_FILE;
2519 /* Add path info line */
2520 if (string_format(buf, "Directory path /%s", opt_path) &&
2521 realloc_lines(view, view->line_size + 1) &&
2522 pager_read(view, buf))
2523 view->line[view->lines - 1].type = LINE_DEFAULT;
2527 /* Insert "link" to parent directory. */
2529 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2530 realloc_lines(view, view->line_size + 1) &&
2531 pager_read(view, buf))
2532 view->line[view->lines - 1].type = LINE_TREE_DIR;
2537 /* Strip the path part ... */
2539 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2540 size_t striplen = strlen(opt_path);
2541 char *path = text + SIZEOF_TREE_ATTR;
2543 if (pathlen > striplen)
2544 memmove(path, path + striplen,
2545 pathlen - striplen + 1);
2548 /* Skip "Directory ..." and ".." line. */
2549 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2550 struct line *line = &view->line[pos];
2551 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2552 char *path2 = text + SIZEOF_TREE_ATTR;
2553 int cmp = tree_compare_entry(line->type, path1, type, path2);
2558 text = strdup(text);
2562 if (view->lines > pos)
2563 memmove(&view->line[pos + 1], &view->line[pos],
2564 (view->lines - pos) * sizeof(*line));
2566 line = &view->line[pos];
2573 if (!pager_read(view, text))
2576 /* Move the current line to the first tree entry. */
2580 view->line[view->lines - 1].type = type;
2585 tree_enter(struct view *view, struct line *line)
2587 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2588 enum request request;
2590 switch (line->type) {
2592 /* Depending on whether it is a subdir or parent (updir?) link
2593 * mangle the path buffer. */
2594 if (line == &view->line[1] && *opt_path) {
2595 size_t path_len = strlen(opt_path);
2596 char *dirsep = opt_path + path_len - 1;
2598 while (dirsep > opt_path && dirsep[-1] != '/')
2604 size_t pathlen = strlen(opt_path);
2605 size_t origlen = pathlen;
2606 char *data = line->data;
2607 char *basename = data + SIZEOF_TREE_ATTR;
2609 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2610 opt_path[origlen] = 0;
2615 /* Trees and subtrees share the same ID, so they are not not
2616 * unique like blobs. */
2617 flags |= OPEN_RELOAD;
2618 request = REQ_VIEW_TREE;
2621 case LINE_TREE_FILE:
2622 request = REQ_VIEW_BLOB;
2629 open_view(view, request, flags);
2635 tree_select(struct view *view, struct line *line)
2637 char *text = line->data;
2639 text += STRING_SIZE("100644 blob ");
2641 if (line->type == LINE_TREE_FILE) {
2642 string_ncopy(ref_blob, text, 40);
2643 /* Also update the blob view's ref, since all there must always
2645 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2647 } else if (line->type != LINE_TREE_DIR) {
2651 string_ncopy(view->ref, text, 40);
2654 static struct view_ops tree_ops = {
2664 blob_read(struct view *view, char *line)
2666 bool state = pager_read(view, line);
2669 view->line[view->lines - 1].type = LINE_DEFAULT;
2674 static struct view_ops blob_ops = {
2689 char id[SIZEOF_REV]; /* SHA1 ID. */
2690 char title[75]; /* First line of the commit message. */
2691 char author[75]; /* Author of the commit. */
2692 struct tm time; /* Date from the author ident. */
2693 struct ref **refs; /* Repository references. */
2694 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2695 size_t graph_size; /* The width of the graph array. */
2699 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2701 char buf[DATE_COLS + 1];
2702 struct commit *commit = line->data;
2703 enum line_type type;
2709 if (!*commit->author)
2712 wmove(view->win, lineno, col);
2716 wattrset(view->win, get_line_attr(type));
2717 wchgat(view->win, -1, 0, type, NULL);
2720 type = LINE_MAIN_COMMIT;
2721 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2724 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2725 waddnstr(view->win, buf, timelen);
2726 waddstr(view->win, " ");
2729 wmove(view->win, lineno, col);
2730 if (type != LINE_CURSOR)
2731 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2734 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2736 authorlen = strlen(commit->author);
2737 if (authorlen > AUTHOR_COLS - 2) {
2738 authorlen = AUTHOR_COLS - 2;
2744 waddnstr(view->win, commit->author, authorlen);
2745 if (type != LINE_CURSOR)
2746 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2747 waddch(view->win, '~');
2749 waddstr(view->win, commit->author);
2753 if (type != LINE_CURSOR)
2754 wattrset(view->win, A_NORMAL);
2756 if (opt_rev_graph && commit->graph_size) {
2759 wmove(view->win, lineno, col);
2760 /* Using waddch() instead of waddnstr() ensures that
2761 * they'll be rendered correctly for the cursor line. */
2762 for (i = 0; i < commit->graph_size; i++)
2763 waddch(view->win, commit->graph[i]);
2765 col += commit->graph_size + 1;
2768 wmove(view->win, lineno, col);
2774 if (type == LINE_CURSOR)
2776 else if (commit->refs[i]->tag)
2777 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2779 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2780 waddstr(view->win, "[");
2781 waddstr(view->win, commit->refs[i]->name);
2782 waddstr(view->win, "]");
2783 if (type != LINE_CURSOR)
2784 wattrset(view->win, A_NORMAL);
2785 waddstr(view->win, " ");
2786 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2787 } while (commit->refs[i++]->next);
2790 if (type != LINE_CURSOR)
2791 wattrset(view->win, get_line_attr(type));
2794 int titlelen = strlen(commit->title);
2796 if (col + titlelen > view->width)
2797 titlelen = view->width - col;
2799 waddnstr(view->win, commit->title, titlelen);
2805 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2807 main_read(struct view *view, char *line)
2809 enum line_type type = get_line_type(line);
2810 struct commit *commit = view->lines
2811 ? view->line[view->lines - 1].data : NULL;
2815 commit = calloc(1, sizeof(struct commit));
2819 line += STRING_SIZE("commit ");
2821 view->line[view->lines++].data = commit;
2822 string_copy(commit->id, line);
2823 commit->refs = get_refs(commit->id);
2824 commit->graph[commit->graph_size++] = ACS_LTEE;
2829 char *ident = line + STRING_SIZE("author ");
2830 char *end = strchr(ident, '<');
2836 char *email = end + 1;
2838 for (; end > ident && isspace(end[-1]); end--) ;
2840 if (end == ident && *email) {
2842 end = strchr(ident, '>');
2843 for (; end > ident && isspace(end[-1]); end--) ;
2848 /* End is NULL or ident meaning there's no author. */
2852 string_copy(commit->author, ident);
2854 /* Parse epoch and timezone */
2856 char *secs = strchr(end + 1, '>');
2860 if (!secs || secs[1] != ' ')
2864 time = (time_t) atol(secs);
2865 zone = strchr(secs, ' ');
2866 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2870 tz = ('0' - zone[1]) * 60 * 60 * 10;
2871 tz += ('0' - zone[2]) * 60 * 60;
2872 tz += ('0' - zone[3]) * 60;
2873 tz += ('0' - zone[4]) * 60;
2880 gmtime_r(&time, &commit->time);
2888 /* Fill in the commit title if it has not already been set. */
2889 if (commit->title[0])
2892 /* Require titles to start with a non-space character at the
2893 * offset used by git log. */
2894 /* FIXME: More gracefull handling of titles; append "..." to
2895 * shortened titles, etc. */
2896 if (strncmp(line, " ", 4) ||
2900 string_copy(commit->title, line + 4);
2907 main_enter(struct view *view, struct line *line)
2909 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2911 open_view(view, REQ_VIEW_DIFF, flags);
2916 main_grep(struct view *view, struct line *line)
2918 struct commit *commit = line->data;
2919 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2920 char buf[DATE_COLS + 1];
2923 for (state = S_TITLE; state < S_END; state++) {
2927 case S_TITLE: text = commit->title; break;
2928 case S_AUTHOR: text = commit->author; break;
2930 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2939 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2947 main_select(struct view *view, struct line *line)
2949 struct commit *commit = line->data;
2951 string_copy(view->ref, commit->id);
2952 string_copy(ref_commit, view->ref);
2955 static struct view_ops main_ops = {
2966 * Unicode / UTF-8 handling
2968 * NOTE: Much of the following code for dealing with unicode is derived from
2969 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2970 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2973 /* I've (over)annotated a lot of code snippets because I am not entirely
2974 * confident that the approach taken by this small UTF-8 interface is correct.
2978 unicode_width(unsigned long c)
2981 (c <= 0x115f /* Hangul Jamo */
2984 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2986 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2987 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2988 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2989 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2990 || (c >= 0xffe0 && c <= 0xffe6)
2991 || (c >= 0x20000 && c <= 0x2fffd)
2992 || (c >= 0x30000 && c <= 0x3fffd)))
2998 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2999 * Illegal bytes are set one. */
3000 static const unsigned char utf8_bytes[256] = {
3001 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,
3002 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,
3003 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,
3004 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,
3005 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,
3006 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,
3007 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,
3008 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,
3011 /* Decode UTF-8 multi-byte representation into a unicode character. */
3012 static inline unsigned long
3013 utf8_to_unicode(const char *string, size_t length)
3015 unsigned long unicode;
3019 unicode = string[0];
3022 unicode = (string[0] & 0x1f) << 6;
3023 unicode += (string[1] & 0x3f);
3026 unicode = (string[0] & 0x0f) << 12;
3027 unicode += ((string[1] & 0x3f) << 6);
3028 unicode += (string[2] & 0x3f);
3031 unicode = (string[0] & 0x0f) << 18;
3032 unicode += ((string[1] & 0x3f) << 12);
3033 unicode += ((string[2] & 0x3f) << 6);
3034 unicode += (string[3] & 0x3f);
3037 unicode = (string[0] & 0x0f) << 24;
3038 unicode += ((string[1] & 0x3f) << 18);
3039 unicode += ((string[2] & 0x3f) << 12);
3040 unicode += ((string[3] & 0x3f) << 6);
3041 unicode += (string[4] & 0x3f);
3044 unicode = (string[0] & 0x01) << 30;
3045 unicode += ((string[1] & 0x3f) << 24);
3046 unicode += ((string[2] & 0x3f) << 18);
3047 unicode += ((string[3] & 0x3f) << 12);
3048 unicode += ((string[4] & 0x3f) << 6);
3049 unicode += (string[5] & 0x3f);
3052 die("Invalid unicode length");
3055 /* Invalid characters could return the special 0xfffd value but NUL
3056 * should be just as good. */
3057 return unicode > 0xffff ? 0 : unicode;
3060 /* Calculates how much of string can be shown within the given maximum width
3061 * and sets trimmed parameter to non-zero value if all of string could not be
3064 * Additionally, adds to coloffset how many many columns to move to align with
3065 * the expected position. Takes into account how multi-byte and double-width
3066 * characters will effect the cursor position.
3068 * Returns the number of bytes to output from string to satisfy max_width. */
3070 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3072 const char *start = string;
3073 const char *end = strchr(string, '\0');
3079 while (string < end) {
3080 int c = *(unsigned char *) string;
3081 unsigned char bytes = utf8_bytes[c];
3083 unsigned long unicode;
3085 if (string + bytes > end)
3088 /* Change representation to figure out whether
3089 * it is a single- or double-width character. */
3091 unicode = utf8_to_unicode(string, bytes);
3092 /* FIXME: Graceful handling of invalid unicode character. */
3096 ucwidth = unicode_width(unicode);
3098 if (width > max_width) {
3103 /* The column offset collects the differences between the
3104 * number of bytes encoding a character and the number of
3105 * columns will be used for rendering said character.
3107 * So if some character A is encoded in 2 bytes, but will be
3108 * represented on the screen using only 1 byte this will and up
3109 * adding 1 to the multi-byte column offset.
3111 * Assumes that no double-width character can be encoding in
3112 * less than two bytes. */
3113 if (bytes > ucwidth)
3114 mbwidth += bytes - ucwidth;
3119 *coloffset += mbwidth;
3121 return string - start;
3129 /* Whether or not the curses interface has been initialized. */
3130 static bool cursed = FALSE;
3132 /* The status window is used for polling keystrokes. */
3133 static WINDOW *status_win;
3135 /* Update status and title window. */
3137 report(const char *msg, ...)
3139 static bool empty = TRUE;
3140 struct view *view = display[current_view];
3145 if (!empty || *msg) {
3148 va_start(args, msg);
3151 wmove(status_win, 0, 0);
3153 vwprintw(status_win, msg, args);
3158 wrefresh(status_win);
3163 update_view_title(view);
3164 update_display_cursor(view);
3167 /* Controls when nodelay should be in effect when polling user input. */
3169 set_nonblocking_input(bool loading)
3171 static unsigned int loading_views;
3173 if ((loading == FALSE && loading_views-- == 1) ||
3174 (loading == TRUE && loading_views++ == 0))
3175 nodelay(status_win, loading);
3183 /* Initialize the curses library */
3184 if (isatty(STDIN_FILENO)) {
3185 cursed = !!initscr();
3187 /* Leave stdin and stdout alone when acting as a pager. */
3188 FILE *io = fopen("/dev/tty", "r+");
3191 die("Failed to open /dev/tty");
3192 cursed = !!newterm(NULL, io, io);
3196 die("Failed to initialize curses");
3198 nonl(); /* Tell curses not to do NL->CR/NL on output */
3199 cbreak(); /* Take input chars one at a time, no wait for \n */
3200 noecho(); /* Don't echo input */
3201 leaveok(stdscr, TRUE);
3206 getmaxyx(stdscr, y, x);
3207 status_win = newwin(1, 0, y - 1, 0);
3209 die("Failed to create status window");
3211 /* Enable keyboard mapping */
3212 keypad(status_win, TRUE);
3213 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3217 read_prompt(const char *prompt)
3219 enum { READING, STOP, CANCEL } status = READING;
3220 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3223 while (status == READING) {
3229 foreach_view (view, i)
3234 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3235 wclrtoeol(status_win);
3237 /* Refresh, accept single keystroke of input */
3238 key = wgetch(status_win);
3243 status = pos ? STOP : CANCEL;
3261 if (pos >= sizeof(buf)) {
3262 report("Input string too long");
3267 buf[pos++] = (char) key;
3271 if (status == CANCEL) {
3272 /* Clear the status window */
3283 * Repository references
3286 static struct ref *refs;
3287 static size_t refs_size;
3289 /* Id <-> ref store */
3290 static struct ref ***id_refs;
3291 static size_t id_refs_size;
3293 static struct ref **
3296 struct ref ***tmp_id_refs;
3297 struct ref **ref_list = NULL;
3298 size_t ref_list_size = 0;
3301 for (i = 0; i < id_refs_size; i++)
3302 if (!strcmp(id, id_refs[i][0]->id))
3305 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3309 id_refs = tmp_id_refs;
3311 for (i = 0; i < refs_size; i++) {
3314 if (strcmp(id, refs[i].id))
3317 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3325 if (ref_list_size > 0)
3326 ref_list[ref_list_size - 1]->next = 1;
3327 ref_list[ref_list_size] = &refs[i];
3329 /* XXX: The properties of the commit chains ensures that we can
3330 * safely modify the shared ref. The repo references will
3331 * always be similar for the same id. */
3332 ref_list[ref_list_size]->next = 0;
3337 id_refs[id_refs_size++] = ref_list;
3343 read_ref(char *id, int idlen, char *name, int namelen)
3348 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3349 /* Commits referenced by tags has "^{}" appended. */
3350 if (name[namelen - 1] != '}')
3353 while (namelen > 0 && name[namelen] != '^')
3357 namelen -= STRING_SIZE("refs/tags/");
3358 name += STRING_SIZE("refs/tags/");
3360 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3361 namelen -= STRING_SIZE("refs/heads/");
3362 name += STRING_SIZE("refs/heads/");
3364 } else if (!strcmp(name, "HEAD")) {
3368 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3372 ref = &refs[refs_size++];
3373 ref->name = malloc(namelen + 1);
3377 strncpy(ref->name, name, namelen);
3378 ref->name[namelen] = 0;
3380 string_copy(ref->id, id);
3388 const char *cmd_env = getenv("TIG_LS_REMOTE");
3389 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3391 return read_properties(popen(cmd, "r"), "\t", read_ref);
3395 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3397 if (!strcmp(name, "i18n.commitencoding"))
3398 string_copy(opt_encoding, value);
3404 load_repo_config(void)
3406 return read_properties(popen("git repo-config --list", "r"),
3407 "=", read_repo_config_option);
3411 read_properties(FILE *pipe, const char *separators,
3412 int (*read_property)(char *, int, char *, int))
3414 char buffer[BUFSIZ];
3421 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3426 name = chomp_string(name);
3427 namelen = strcspn(name, separators);
3429 if (name[namelen]) {
3431 value = chomp_string(name + namelen + 1);
3432 valuelen = strlen(value);
3439 state = read_property(name, namelen, value, valuelen);
3442 if (state != ERR && ferror(pipe))
3455 static void __NORETURN
3458 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3464 static void __NORETURN
3465 die(const char *err, ...)
3471 va_start(args, err);
3472 fputs("tig: ", stderr);
3473 vfprintf(stderr, err, args);
3474 fputs("\n", stderr);
3481 main(int argc, char *argv[])
3484 enum request request;
3487 signal(SIGINT, quit);
3489 if (setlocale(LC_ALL, "")) {
3490 string_copy(opt_codeset, nl_langinfo(CODESET));
3493 if (load_options() == ERR)
3494 die("Failed to load user config.");
3496 /* Load the repo config file so options can be overwritten from
3497 * the command line. */
3498 if (load_repo_config() == ERR)
3499 die("Failed to load repo config.");
3501 if (!parse_options(argc, argv))
3504 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3505 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3506 if (opt_iconv == ICONV_NONE)
3507 die("Failed to initialize character set conversion");
3510 if (load_refs() == ERR)
3511 die("Failed to load refs.");
3513 /* Require a git repository unless when running in pager mode. */
3514 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3515 die("Not a git repository");
3517 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3518 view->cmd_env = getenv(view->cmd_env);
3520 request = opt_request;
3524 while (view_driver(display[current_view], request)) {
3528 foreach_view (view, i)
3531 /* Refresh, accept single keystroke of input */
3532 key = wgetch(status_win);
3534 request = get_keybinding(display[current_view]->keymap, key);
3536 /* Some low-level request handling. This keeps access to
3537 * status_win restricted. */
3541 char *cmd = read_prompt(":");
3543 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3544 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3545 opt_request = REQ_VIEW_DIFF;
3547 opt_request = REQ_VIEW_PAGER;
3556 case REQ_SEARCH_BACK:
3558 const char *prompt = request == REQ_SEARCH
3560 char *search = read_prompt(prompt);
3563 string_copy(opt_search, search);
3568 case REQ_SCREEN_RESIZE:
3572 getmaxyx(stdscr, height, width);
3574 /* Resize the status view and let the view driver take
3575 * care of resizing the displayed views. */
3576 wresize(status_win, 1, width);
3577 mvwin(status_win, height - 1, 0);
3578 wrefresh(status_win);