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_REVGRAPH 19 /* Size of revision ancestry graphics. */
64 /* This color name can be used to refer to the default term colors. */
65 #define COLOR_DEFAULT (-1)
67 #define ICONV_NONE ((iconv_t) -1)
69 /* The format and size of the date column in the main view. */
70 #define DATE_FORMAT "%Y-%m-%d %H:%M"
71 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
73 #define AUTHOR_COLS 20
75 /* The default interval between line numbers. */
76 #define NUMBER_INTERVAL 1
80 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
82 #define TIG_LS_REMOTE \
83 "git ls-remote . 2>/dev/null"
85 #define TIG_DIFF_CMD \
86 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
89 "git log --cc --stat -n100 %s 2>/dev/null"
91 #define TIG_MAIN_CMD \
92 "git log --topo-order --pretty=raw %s 2>/dev/null"
94 #define TIG_TREE_CMD \
97 #define TIG_BLOB_CMD \
98 "git cat-file blob %s"
100 /* XXX: Needs to be defined to the empty string. */
101 #define TIG_HELP_CMD ""
102 #define TIG_PAGER_CMD ""
104 /* Some ascii-shorthands fitted into the ncurses namespace. */
106 #define KEY_RETURN '\r'
111 char *name; /* Ref name; tag or head names are shortened. */
112 char id[41]; /* Commit SHA1 ID */
113 unsigned int tag:1; /* Is it a tag? */
114 unsigned int next:1; /* For ref lists: are there more refs? */
117 static struct ref **get_refs(char *id);
126 set_from_int_map(struct int_map *map, size_t map_size,
127 int *value, const char *name, int namelen)
132 for (i = 0; i < map_size; i++)
133 if (namelen == map[i].namelen &&
134 !strncasecmp(name, map[i].name, namelen)) {
135 *value = map[i].value;
148 string_ncopy(char *dst, const char *src, int dstlen)
150 strncpy(dst, src, dstlen - 1);
155 /* Shorthand for safely copying into a fixed buffer. */
156 #define string_copy(dst, src) \
157 string_ncopy(dst, src, sizeof(dst))
160 chomp_string(char *name)
164 while (isspace(*name))
167 namelen = strlen(name) - 1;
168 while (namelen > 0 && isspace(name[namelen]))
175 string_nformat(char *buf, size_t bufsize, int *bufpos, const char *fmt, ...)
178 int pos = bufpos ? *bufpos : 0;
181 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
187 return pos >= bufsize ? FALSE : TRUE;
190 #define string_format(buf, fmt, args...) \
191 string_nformat(buf, sizeof(buf), NULL, fmt, args)
193 #define string_format_from(buf, from, fmt, args...) \
194 string_nformat(buf, sizeof(buf), from, fmt, args)
197 string_enum_compare(const char *str1, const char *str2, int len)
201 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
203 /* Diff-Header == DIFF_HEADER */
204 for (i = 0; i < len; i++) {
205 if (toupper(str1[i]) == toupper(str2[i]))
208 if (string_enum_sep(str1[i]) &&
209 string_enum_sep(str2[i]))
212 return str1[i] - str2[i];
220 * NOTE: The following is a slightly modified copy of the git project's shell
221 * quoting routines found in the quote.c file.
223 * Help to copy the thing properly quoted for the shell safety. any single
224 * quote is replaced with '\'', any exclamation point is replaced with '\!',
225 * and the whole thing is enclosed in a
228 * original sq_quote result
229 * name ==> name ==> 'name'
230 * a b ==> a b ==> 'a b'
231 * a'b ==> a'\''b ==> 'a'\''b'
232 * a!b ==> a'\!'b ==> 'a'\!'b'
236 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
240 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
243 while ((c = *src++)) {
244 if (c == '\'' || c == '!') {
264 /* XXX: Keep the view request first and in sync with views[]. */ \
265 REQ_GROUP("View switching") \
266 REQ_(VIEW_MAIN, "Show main view"), \
267 REQ_(VIEW_DIFF, "Show diff view"), \
268 REQ_(VIEW_LOG, "Show log view"), \
269 REQ_(VIEW_TREE, "Show tree view"), \
270 REQ_(VIEW_BLOB, "Show blob view"), \
271 REQ_(VIEW_HELP, "Show help page"), \
272 REQ_(VIEW_PAGER, "Show pager view"), \
274 REQ_GROUP("View manipulation") \
275 REQ_(ENTER, "Enter current line and scroll"), \
276 REQ_(NEXT, "Move to next"), \
277 REQ_(PREVIOUS, "Move to previous"), \
278 REQ_(VIEW_NEXT, "Move focus to next view"), \
279 REQ_(VIEW_CLOSE, "Close the current view"), \
280 REQ_(QUIT, "Close all views and quit"), \
282 REQ_GROUP("Cursor navigation") \
283 REQ_(MOVE_UP, "Move cursor one line up"), \
284 REQ_(MOVE_DOWN, "Move cursor one line down"), \
285 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
286 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
287 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
288 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
290 REQ_GROUP("Scrolling") \
291 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
292 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
293 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
294 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
296 REQ_GROUP("Searching") \
297 REQ_(SEARCH, "Search the view"), \
298 REQ_(SEARCH_BACK, "Search backwards in the view"), \
299 REQ_(FIND_NEXT, "Find next search match"), \
300 REQ_(FIND_PREV, "Find previous search match"), \
303 REQ_(NONE, "Do nothing"), \
304 REQ_(PROMPT, "Bring up the prompt"), \
305 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
306 REQ_(SCREEN_RESIZE, "Resize the screen"), \
307 REQ_(SHOW_VERSION, "Show version information"), \
308 REQ_(STOP_LOADING, "Stop all loading views"), \
309 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
310 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
313 /* User action requests. */
315 #define REQ_GROUP(help)
316 #define REQ_(req, help) REQ_##req
318 /* Offset all requests to avoid conflicts with ncurses getch values. */
319 REQ_OFFSET = KEY_MAX + 1,
327 struct request_info {
328 enum request request;
334 static struct request_info req_info[] = {
335 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
336 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
343 get_request(const char *name)
345 int namelen = strlen(name);
348 for (i = 0; i < ARRAY_SIZE(req_info); i++)
349 if (req_info[i].namelen == namelen &&
350 !string_enum_compare(req_info[i].name, name, namelen))
351 return req_info[i].request;
361 static const char usage[] =
362 VERSION " (" __DATE__ ")\n"
364 "Usage: tig [options]\n"
365 " or: tig [options] [--] [git log options]\n"
366 " or: tig [options] log [git log options]\n"
367 " or: tig [options] diff [git diff options]\n"
368 " or: tig [options] show [git show options]\n"
369 " or: tig [options] < [git command output]\n"
372 " -l Start up in log view\n"
373 " -d Start up in diff view\n"
374 " -n[I], --line-number[=I] Show line numbers with given interval\n"
375 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
376 " -- Mark end of tig options\n"
377 " -v, --version Show version and exit\n"
378 " -h, --help Show help message and exit\n";
380 /* Option and state variables. */
381 static bool opt_line_number = FALSE;
382 static bool opt_rev_graph = TRUE;
383 static int opt_num_interval = NUMBER_INTERVAL;
384 static int opt_tab_size = TABSIZE;
385 static enum request opt_request = REQ_VIEW_MAIN;
386 static char opt_cmd[SIZEOF_STR] = "";
387 static char opt_path[SIZEOF_STR] = "";
388 static FILE *opt_pipe = NULL;
389 static char opt_encoding[20] = "UTF-8";
390 static bool opt_utf8 = TRUE;
391 static char opt_codeset[20] = "UTF-8";
392 static iconv_t opt_iconv = ICONV_NONE;
393 static char opt_search[SIZEOF_STR] = "";
401 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
411 int namelen = strlen(name);
415 if (strncmp(opt, name, namelen))
418 if (opt[namelen] == '=')
419 value = opt + namelen + 1;
422 if (!short_name || opt[1] != short_name)
427 va_start(args, type);
428 if (type == OPT_INT) {
429 number = va_arg(args, int *);
431 *number = atoi(value);
438 /* Returns the index of log or diff command or -1 to exit. */
440 parse_options(int argc, char *argv[])
444 for (i = 1; i < argc; i++) {
447 if (!strcmp(opt, "-l")) {
448 opt_request = REQ_VIEW_LOG;
452 if (!strcmp(opt, "-d")) {
453 opt_request = REQ_VIEW_DIFF;
457 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
458 opt_line_number = TRUE;
462 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
463 opt_tab_size = MIN(opt_tab_size, TABSIZE);
467 if (check_option(opt, 'v', "version", OPT_NONE)) {
468 printf("tig version %s\n", VERSION);
472 if (check_option(opt, 'h', "help", OPT_NONE)) {
477 if (!strcmp(opt, "--")) {
482 if (!strcmp(opt, "log") ||
483 !strcmp(opt, "diff") ||
484 !strcmp(opt, "show")) {
485 opt_request = opt[0] == 'l'
486 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
490 if (opt[0] && opt[0] != '-')
493 die("unknown option '%s'\n\n%s", opt, usage);
496 if (!isatty(STDIN_FILENO)) {
497 opt_request = REQ_VIEW_PAGER;
500 } else if (i < argc) {
503 if (opt_request == REQ_VIEW_MAIN)
504 /* XXX: This is vulnerable to the user overriding
505 * options required for the main view parser. */
506 string_copy(opt_cmd, "git log --stat --pretty=raw");
508 string_copy(opt_cmd, "git");
509 buf_size = strlen(opt_cmd);
511 while (buf_size < sizeof(opt_cmd) && i < argc) {
512 opt_cmd[buf_size++] = ' ';
513 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
516 if (buf_size >= sizeof(opt_cmd))
517 die("command too long");
519 opt_cmd[buf_size] = 0;
523 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
531 * Line-oriented content detection.
535 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
536 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
537 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
538 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
539 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
540 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
541 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
542 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
543 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
544 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
545 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
546 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
547 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
549 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
550 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
551 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
552 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
556 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
557 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
558 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
560 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
561 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
563 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
564 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
565 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
566 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
567 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
568 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
569 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
570 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
571 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
572 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
573 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
574 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
577 #define LINE(type, line, fg, bg, attr) \
584 const char *name; /* Option name. */
585 int namelen; /* Size of option name. */
586 const char *line; /* The start of line to match. */
587 int linelen; /* Size of string to match. */
588 int fg, bg, attr; /* Color and text attributes for the lines. */
591 static struct line_info line_info[] = {
592 #define LINE(type, line, fg, bg, attr) \
593 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
598 static enum line_type
599 get_line_type(char *line)
601 int linelen = strlen(line);
604 for (type = 0; type < ARRAY_SIZE(line_info); type++)
605 /* Case insensitive search matches Signed-off-by lines better. */
606 if (linelen >= line_info[type].linelen &&
607 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
614 get_line_attr(enum line_type type)
616 assert(type < ARRAY_SIZE(line_info));
617 return COLOR_PAIR(type) | line_info[type].attr;
620 static struct line_info *
621 get_line_info(char *name, int namelen)
625 for (type = 0; type < ARRAY_SIZE(line_info); type++)
626 if (namelen == line_info[type].namelen &&
627 !string_enum_compare(line_info[type].name, name, namelen))
628 return &line_info[type];
636 int default_bg = COLOR_BLACK;
637 int default_fg = COLOR_WHITE;
642 if (use_default_colors() != ERR) {
647 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
648 struct line_info *info = &line_info[type];
649 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
650 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
652 init_pair(type, fg, bg);
658 void *data; /* User data */
668 enum request request;
669 struct keybinding *next;
672 static struct keybinding default_keybindings[] = {
674 { 'm', REQ_VIEW_MAIN },
675 { 'd', REQ_VIEW_DIFF },
676 { 'l', REQ_VIEW_LOG },
677 { 't', REQ_VIEW_TREE },
678 { 'b', REQ_VIEW_BLOB },
679 { 'p', REQ_VIEW_PAGER },
680 { 'h', REQ_VIEW_HELP },
682 /* View manipulation */
683 { 'q', REQ_VIEW_CLOSE },
684 { KEY_TAB, REQ_VIEW_NEXT },
685 { KEY_RETURN, REQ_ENTER },
686 { KEY_UP, REQ_PREVIOUS },
687 { KEY_DOWN, REQ_NEXT },
689 /* Cursor navigation */
690 { 'k', REQ_MOVE_UP },
691 { 'j', REQ_MOVE_DOWN },
692 { KEY_HOME, REQ_MOVE_FIRST_LINE },
693 { KEY_END, REQ_MOVE_LAST_LINE },
694 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
695 { ' ', REQ_MOVE_PAGE_DOWN },
696 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
697 { 'b', REQ_MOVE_PAGE_UP },
698 { '-', REQ_MOVE_PAGE_UP },
701 { KEY_IC, REQ_SCROLL_LINE_UP },
702 { KEY_DC, REQ_SCROLL_LINE_DOWN },
703 { 'w', REQ_SCROLL_PAGE_UP },
704 { 's', REQ_SCROLL_PAGE_DOWN },
708 { '?', REQ_SEARCH_BACK },
709 { 'n', REQ_FIND_NEXT },
710 { 'N', REQ_FIND_PREV },
714 { 'z', REQ_STOP_LOADING },
715 { 'v', REQ_SHOW_VERSION },
716 { 'r', REQ_SCREEN_REDRAW },
717 { 'n', REQ_TOGGLE_LINENO },
718 { 'g', REQ_TOGGLE_REV_GRAPH },
721 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
724 /* Using the ncurses SIGWINCH handler. */
725 { KEY_RESIZE, REQ_SCREEN_RESIZE },
728 #define KEYMAP_INFO \
739 #define KEYMAP_(name) KEYMAP_##name
744 static struct int_map keymap_table[] = {
745 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
750 #define set_keymap(map, name) \
751 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
753 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
756 add_keybinding(enum keymap keymap, enum request request, int key)
758 struct keybinding *keybinding;
760 keybinding = calloc(1, sizeof(*keybinding));
762 die("Failed to allocate keybinding");
764 keybinding->alias = key;
765 keybinding->request = request;
766 keybinding->next = keybindings[keymap];
767 keybindings[keymap] = keybinding;
770 /* Looks for a key binding first in the given map, then in the generic map, and
771 * lastly in the default keybindings. */
773 get_keybinding(enum keymap keymap, int key)
775 struct keybinding *kbd;
778 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
779 if (kbd->alias == key)
782 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
783 if (kbd->alias == key)
786 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
787 if (default_keybindings[i].alias == key)
788 return default_keybindings[i].request;
790 return (enum request) key;
799 static struct key key_table[] = {
800 { "Enter", KEY_RETURN },
802 { "Backspace", KEY_BACKSPACE },
804 { "Escape", KEY_ESC },
805 { "Left", KEY_LEFT },
806 { "Right", KEY_RIGHT },
808 { "Down", KEY_DOWN },
809 { "Insert", KEY_IC },
810 { "Delete", KEY_DC },
812 { "Home", KEY_HOME },
814 { "PageUp", KEY_PPAGE },
815 { "PageDown", KEY_NPAGE },
825 { "F10", KEY_F(10) },
826 { "F11", KEY_F(11) },
827 { "F12", KEY_F(12) },
831 get_key_value(const char *name)
835 for (i = 0; i < ARRAY_SIZE(key_table); i++)
836 if (!strcasecmp(key_table[i].name, name))
837 return key_table[i].value;
839 if (strlen(name) == 1 && isprint(*name))
846 get_key(enum request request)
848 static char buf[BUFSIZ];
849 static char key_char[] = "'X'";
856 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
857 struct keybinding *keybinding = &default_keybindings[i];
861 if (keybinding->request != request)
864 for (key = 0; key < ARRAY_SIZE(key_table); key++)
865 if (key_table[key].value == keybinding->alias)
866 seq = key_table[key].name;
869 keybinding->alias < 127 &&
870 isprint(keybinding->alias)) {
871 key_char[1] = (char) keybinding->alias;
878 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
879 return "Too many keybindings!";
888 * User config file handling.
891 static struct int_map color_map[] = {
892 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
904 #define set_color(color, name) \
905 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
907 static struct int_map attr_map[] = {
908 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
918 #define set_attribute(attr, name) \
919 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
921 static int config_lineno;
922 static bool config_errors;
923 static char *config_msg;
925 /* Wants: object fgcolor bgcolor [attr] */
927 option_color_command(int argc, char *argv[])
929 struct line_info *info;
931 if (argc != 3 && argc != 4) {
932 config_msg = "Wrong number of arguments given to color command";
936 info = get_line_info(argv[0], strlen(argv[0]));
938 config_msg = "Unknown color name";
942 if (set_color(&info->fg, argv[1]) == ERR ||
943 set_color(&info->bg, argv[2]) == ERR) {
944 config_msg = "Unknown color";
948 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
949 config_msg = "Unknown attribute";
956 /* Wants: name = value */
958 option_set_command(int argc, char *argv[])
961 config_msg = "Wrong number of arguments given to set command";
965 if (strcmp(argv[1], "=")) {
966 config_msg = "No value assigned";
970 if (!strcmp(argv[0], "show-rev-graph")) {
971 opt_rev_graph = (!strcmp(argv[2], "1") ||
972 !strcmp(argv[2], "true") ||
973 !strcmp(argv[2], "yes"));
977 if (!strcmp(argv[0], "line-number-interval")) {
978 opt_num_interval = atoi(argv[2]);
982 if (!strcmp(argv[0], "tab-size")) {
983 opt_tab_size = atoi(argv[2]);
987 if (!strcmp(argv[0], "commit-encoding")) {
989 int delimiter = *arg;
995 for (arg++, i = 0; arg[i]; i++)
996 if (arg[i] == delimiter) {
1001 string_copy(opt_encoding, arg);
1006 config_msg = "Unknown variable name";
1010 /* Wants: mode request key */
1012 option_bind_command(int argc, char *argv[])
1014 enum request request;
1019 config_msg = "Wrong number of arguments given to bind command";
1023 if (set_keymap(&keymap, argv[0]) == ERR) {
1024 config_msg = "Unknown key map";
1028 key = get_key_value(argv[1]);
1030 config_msg = "Unknown key";
1034 request = get_request(argv[2]);
1035 if (request == REQ_UNKNOWN) {
1036 config_msg = "Unknown request name";
1040 add_keybinding(keymap, request, key);
1046 set_option(char *opt, char *value)
1053 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1054 argv[argc++] = value;
1061 while (isspace(*value))
1065 if (!strcmp(opt, "color"))
1066 return option_color_command(argc, argv);
1068 if (!strcmp(opt, "set"))
1069 return option_set_command(argc, argv);
1071 if (!strcmp(opt, "bind"))
1072 return option_bind_command(argc, argv);
1074 config_msg = "Unknown option command";
1079 read_option(char *opt, int optlen, char *value, int valuelen)
1084 config_msg = "Internal error";
1086 /* Check for comment markers, since read_properties() will
1087 * only ensure opt and value are split at first " \t". */
1088 optlen = strcspn(opt, "#");
1092 if (opt[optlen] != 0) {
1093 config_msg = "No option value";
1097 /* Look for comment endings in the value. */
1098 int len = strcspn(value, "#");
1100 if (len < valuelen) {
1102 value[valuelen] = 0;
1105 status = set_option(opt, value);
1108 if (status == ERR) {
1109 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1110 config_lineno, optlen, opt, config_msg);
1111 config_errors = TRUE;
1114 /* Always keep going if errors are encountered. */
1121 char *home = getenv("HOME");
1122 char buf[SIZEOF_STR];
1126 config_errors = FALSE;
1128 if (!home || !string_format(buf, "%s/.tigrc", home))
1131 /* It's ok that the file doesn't exist. */
1132 file = fopen(buf, "r");
1136 if (read_properties(file, " \t", read_option) == ERR ||
1137 config_errors == TRUE)
1138 fprintf(stderr, "Errors while loading %s.\n", buf);
1151 /* The display array of active views and the index of the current view. */
1152 static struct view *display[2];
1153 static unsigned int current_view;
1155 #define foreach_displayed_view(view, i) \
1156 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1158 #define displayed_views() (display[1] != NULL ? 2 : 1)
1160 /* Current head and commit ID */
1161 static char ref_blob[SIZEOF_REF] = "";
1162 static char ref_commit[SIZEOF_REF] = "HEAD";
1163 static char ref_head[SIZEOF_REF] = "HEAD";
1166 const char *name; /* View name */
1167 const char *cmd_fmt; /* Default command line format */
1168 const char *cmd_env; /* Command line set via environment */
1169 const char *id; /* Points to either of ref_{head,commit,blob} */
1171 struct view_ops *ops; /* View operations */
1173 enum keymap keymap; /* What keymap does this view have */
1175 char cmd[SIZEOF_STR]; /* Command buffer */
1176 char ref[SIZEOF_REF]; /* Hovered commit reference */
1177 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1179 int height, width; /* The width and height of the main window */
1180 WINDOW *win; /* The main window */
1181 WINDOW *title; /* The title window living below the main window */
1184 unsigned long offset; /* Offset of the window top */
1185 unsigned long lineno; /* Current line number */
1188 char grep[SIZEOF_STR]; /* Search string */
1189 regex_t regex; /* Pre-compiled regex */
1191 /* If non-NULL, points to the view that opened this view. If this view
1192 * is closed tig will switch back to the parent view. */
1193 struct view *parent;
1196 unsigned long lines; /* Total number of lines */
1197 struct line *line; /* Line index */
1198 unsigned long line_size;/* Total number of allocated lines */
1199 unsigned int digits; /* Number of digits in the lines member. */
1207 /* What type of content being displayed. Used in the title bar. */
1209 /* Draw one line; @lineno must be < view->height. */
1210 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1211 /* Read one line; updates view->line. */
1212 bool (*read)(struct view *view, char *data);
1213 /* Depending on view, change display based on current line. */
1214 bool (*enter)(struct view *view, struct line *line);
1215 /* Search for regex in a line. */
1216 bool (*grep)(struct view *view, struct line *line);
1219 static struct view_ops pager_ops;
1220 static struct view_ops main_ops;
1221 static struct view_ops tree_ops;
1222 static struct view_ops blob_ops;
1224 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1225 { name, cmd, #env, ref, ops, map}
1227 #define VIEW_(id, name, ops, ref) \
1228 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1231 static struct view views[] = {
1232 VIEW_(MAIN, "main", &main_ops, ref_head),
1233 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1234 VIEW_(LOG, "log", &pager_ops, ref_head),
1235 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1236 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1237 VIEW_(HELP, "help", &pager_ops, "static"),
1238 VIEW_(PAGER, "pager", &pager_ops, "static"),
1241 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1245 draw_view_line(struct view *view, unsigned int lineno)
1247 if (view->offset + lineno >= view->lines)
1250 return view->ops->draw(view, &view->line[view->offset + lineno], lineno);
1254 redraw_view_from(struct view *view, int lineno)
1256 assert(0 <= lineno && lineno < view->height);
1258 for (; lineno < view->height; lineno++) {
1259 if (!draw_view_line(view, lineno))
1263 redrawwin(view->win);
1264 wrefresh(view->win);
1268 redraw_view(struct view *view)
1271 redraw_view_from(view, 0);
1276 update_view_title(struct view *view)
1278 if (view == display[current_view])
1279 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1281 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1283 werase(view->title);
1284 wmove(view->title, 0, 0);
1287 wprintw(view->title, "[%s] %s", view->name, view->ref);
1289 wprintw(view->title, "[%s]", view->name);
1291 if (view->lines || view->pipe) {
1292 unsigned int view_lines = view->offset + view->height;
1293 unsigned int lines = view->lines
1294 ? MIN(view_lines, view->lines) * 100 / view->lines
1297 wprintw(view->title, " - %s %d of %d (%d%%)",
1305 time_t secs = time(NULL) - view->start_time;
1307 /* Three git seconds are a long time ... */
1309 wprintw(view->title, " %lds", secs);
1312 wmove(view->title, 0, view->width - 1);
1313 wrefresh(view->title);
1317 resize_display(void)
1320 struct view *base = display[0];
1321 struct view *view = display[1] ? display[1] : display[0];
1323 /* Setup window dimensions */
1325 getmaxyx(stdscr, base->height, base->width);
1327 /* Make room for the status window. */
1331 /* Horizontal split. */
1332 view->width = base->width;
1333 view->height = SCALE_SPLIT_VIEW(base->height);
1334 base->height -= view->height;
1336 /* Make room for the title bar. */
1340 /* Make room for the title bar. */
1345 foreach_displayed_view (view, i) {
1347 view->win = newwin(view->height, 0, offset, 0);
1349 die("Failed to create %s view", view->name);
1351 scrollok(view->win, TRUE);
1353 view->title = newwin(1, 0, offset + view->height, 0);
1355 die("Failed to create title window");
1358 wresize(view->win, view->height, view->width);
1359 mvwin(view->win, offset, 0);
1360 mvwin(view->title, offset + view->height, 0);
1363 offset += view->height + 1;
1368 redraw_display(void)
1373 foreach_displayed_view (view, i) {
1375 update_view_title(view);
1380 update_display_cursor(void)
1382 struct view *view = display[current_view];
1384 /* Move the cursor to the right-most column of the cursor line.
1386 * XXX: This could turn out to be a bit expensive, but it ensures that
1387 * the cursor does not jump around. */
1389 wmove(view->win, view->lineno - view->offset, view->width - 1);
1390 wrefresh(view->win);
1398 /* Scrolling backend */
1400 do_scroll_view(struct view *view, int lines, bool redraw)
1402 /* The rendering expects the new offset. */
1403 view->offset += lines;
1405 assert(0 <= view->offset && view->offset < view->lines);
1408 /* Redraw the whole screen if scrolling is pointless. */
1409 if (view->height < ABS(lines)) {
1413 int line = lines > 0 ? view->height - lines : 0;
1414 int end = line + ABS(lines);
1416 wscrl(view->win, lines);
1418 for (; line < end; line++) {
1419 if (!draw_view_line(view, line))
1424 /* Move current line into the view. */
1425 if (view->lineno < view->offset) {
1426 view->lineno = view->offset;
1427 draw_view_line(view, 0);
1429 } else if (view->lineno >= view->offset + view->height) {
1430 if (view->lineno == view->offset + view->height) {
1431 /* Clear the hidden line so it doesn't show if the view
1432 * is scrolled up. */
1433 wmove(view->win, view->height, 0);
1434 wclrtoeol(view->win);
1436 view->lineno = view->offset + view->height - 1;
1437 draw_view_line(view, view->lineno - view->offset);
1440 assert(view->offset <= view->lineno && view->lineno < view->lines);
1445 redrawwin(view->win);
1446 wrefresh(view->win);
1450 /* Scroll frontend */
1452 scroll_view(struct view *view, enum request request)
1457 case REQ_SCROLL_PAGE_DOWN:
1458 lines = view->height;
1459 case REQ_SCROLL_LINE_DOWN:
1460 if (view->offset + lines > view->lines)
1461 lines = view->lines - view->offset;
1463 if (lines == 0 || view->offset + view->height >= view->lines) {
1464 report("Cannot scroll beyond the last line");
1469 case REQ_SCROLL_PAGE_UP:
1470 lines = view->height;
1471 case REQ_SCROLL_LINE_UP:
1472 if (lines > view->offset)
1473 lines = view->offset;
1476 report("Cannot scroll beyond the first line");
1484 die("request %d not handled in switch", request);
1487 do_scroll_view(view, lines, TRUE);
1492 move_view(struct view *view, enum request request, bool redraw)
1497 case REQ_MOVE_FIRST_LINE:
1498 steps = -view->lineno;
1501 case REQ_MOVE_LAST_LINE:
1502 steps = view->lines - view->lineno - 1;
1505 case REQ_MOVE_PAGE_UP:
1506 steps = view->height > view->lineno
1507 ? -view->lineno : -view->height;
1510 case REQ_MOVE_PAGE_DOWN:
1511 steps = view->lineno + view->height >= view->lines
1512 ? view->lines - view->lineno - 1 : view->height;
1524 die("request %d not handled in switch", request);
1527 if (steps <= 0 && view->lineno == 0) {
1528 report("Cannot move beyond the first line");
1531 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1532 report("Cannot move beyond the last line");
1536 /* Move the current line */
1537 view->lineno += steps;
1538 assert(0 <= view->lineno && view->lineno < view->lines);
1540 /* Repaint the old "current" line if we be scrolling */
1541 if (ABS(steps) < view->height) {
1542 int prev_lineno = view->lineno - steps - view->offset;
1544 wmove(view->win, prev_lineno, 0);
1545 wclrtoeol(view->win);
1546 draw_view_line(view, prev_lineno);
1549 /* Check whether the view needs to be scrolled */
1550 if (view->lineno < view->offset ||
1551 view->lineno >= view->offset + view->height) {
1552 if (steps < 0 && -steps > view->offset) {
1553 steps = -view->offset;
1555 } else if (steps > 0) {
1556 if (view->lineno == view->lines - 1 &&
1557 view->lines > view->height) {
1558 steps = view->lines - view->offset - 1;
1559 if (steps >= view->height)
1560 steps -= view->height - 1;
1564 do_scroll_view(view, steps, redraw);
1568 /* Draw the current line */
1569 draw_view_line(view, view->lineno - view->offset);
1574 redrawwin(view->win);
1575 wrefresh(view->win);
1584 static void search_view(struct view *view, enum request request, const char *search);
1587 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1589 if (!view->ops->grep(view, line))
1592 if (lineno - view->offset >= view->height) {
1593 view->offset = lineno;
1594 view->lineno = lineno;
1598 unsigned long old_lineno = view->lineno - view->offset;
1600 view->lineno = lineno;
1602 wmove(view->win, old_lineno, 0);
1603 wclrtoeol(view->win);
1604 draw_view_line(view, old_lineno);
1606 draw_view_line(view, view->lineno - view->offset);
1607 redrawwin(view->win);
1608 wrefresh(view->win);
1611 report("Line %ld matches '%s'", lineno + 1, view->grep);
1616 find_next(struct view *view, enum request request)
1618 unsigned long lineno = view->lineno;
1623 report("No previous search");
1625 search_view(view, request, opt_search);
1635 case REQ_SEARCH_BACK:
1644 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1645 lineno += direction;
1647 /* Note, lineno is unsigned long so will wrap around in which case it
1648 * will become bigger than view->lines. */
1649 for (; lineno < view->lines; lineno += direction) {
1650 struct line *line = &view->line[lineno];
1652 if (find_next_line(view, lineno, line))
1656 report("No match found for '%s'", view->grep);
1660 search_view(struct view *view, enum request request, const char *search)
1665 regfree(&view->regex);
1669 regex_err = regcomp(&view->regex, search, REG_EXTENDED);
1670 if (regex_err != 0) {
1671 char buf[SIZEOF_STR] = "unknown error";
1673 regerror(regex_err, &view->regex, buf, sizeof(buf));
1674 report("Search failed: %s", buf);;
1678 string_copy(view->grep, search);
1680 find_next(view, request);
1684 * Incremental updating
1688 end_update(struct view *view)
1692 set_nonblocking_input(FALSE);
1693 if (view->pipe == stdin)
1701 begin_update(struct view *view)
1703 const char *id = view->id;
1709 string_copy(view->cmd, opt_cmd);
1711 /* When running random commands, the view ref could have become
1712 * invalid so clear it. */
1715 } else if (view == VIEW(REQ_VIEW_TREE)) {
1716 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1718 if (strcmp(view->vid, view->id))
1721 if (snprintf(view->cmd, sizeof(view->cmd), format, id, opt_path)
1722 >= sizeof(view->cmd))
1726 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1728 if (!string_format(view->cmd, format, id, id, id, id, id))
1732 /* Special case for the pager view. */
1734 view->pipe = opt_pipe;
1737 view->pipe = popen(view->cmd, "r");
1743 set_nonblocking_input(TRUE);
1748 string_copy(view->vid, id);
1753 for (i = 0; i < view->lines; i++)
1754 if (view->line[i].data)
1755 free(view->line[i].data);
1761 view->start_time = time(NULL);
1766 static struct line *
1767 realloc_lines(struct view *view, size_t line_size)
1769 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1775 view->line_size = line_size;
1780 update_view(struct view *view)
1782 char in_buffer[BUFSIZ];
1783 char out_buffer[BUFSIZ * 2];
1785 /* The number of lines to read. If too low it will cause too much
1786 * redrawing (and possible flickering), if too high responsiveness
1788 unsigned long lines = view->height;
1789 int redraw_from = -1;
1794 /* Only redraw if lines are visible. */
1795 if (view->offset + view->height >= view->lines)
1796 redraw_from = view->lines - view->offset;
1798 if (!realloc_lines(view, view->lines + lines))
1801 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1802 size_t linelen = strlen(line);
1805 line[linelen - 1] = 0;
1807 if (opt_iconv != ICONV_NONE) {
1809 size_t inlen = linelen;
1811 char *outbuf = out_buffer;
1812 size_t outlen = sizeof(out_buffer);
1816 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1817 if (ret != (size_t) -1) {
1819 linelen = strlen(out_buffer);
1823 if (!view->ops->read(view, line))
1833 lines = view->lines;
1834 for (digits = 0; lines; digits++)
1837 /* Keep the displayed view in sync with line number scaling. */
1838 if (digits != view->digits) {
1839 view->digits = digits;
1844 if (view == VIEW(REQ_VIEW_TREE)) {
1845 /* Clear the view and redraw everything since the tree sorting
1846 * might have rearranged things. */
1849 } else if (redraw_from >= 0) {
1850 /* If this is an incremental update, redraw the previous line
1851 * since for commits some members could have changed when
1852 * loading the main view. */
1853 if (redraw_from > 0)
1856 /* Incrementally draw avoids flickering. */
1857 redraw_view_from(view, redraw_from);
1860 /* Update the title _after_ the redraw so that if the redraw picks up a
1861 * commit reference in view->ref it'll be available here. */
1862 update_view_title(view);
1864 if (ferror(view->pipe)) {
1865 report("Failed to read: %s", strerror(errno));
1868 } else if (feof(view->pipe)) {
1876 report("Allocation failure");
1888 static void open_help_view(struct view *view)
1891 int lines = ARRAY_SIZE(req_info) + 2;
1894 if (view->lines > 0)
1897 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1898 if (!req_info[i].request)
1901 view->line = calloc(lines, sizeof(*view->line));
1903 report("Allocation failure");
1907 view->ops->read(view, "Quick reference for tig keybindings:");
1909 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1912 if (!req_info[i].request) {
1913 view->ops->read(view, "");
1914 view->ops->read(view, req_info[i].help);
1918 key = get_key(req_info[i].request);
1919 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1922 view->ops->read(view, buf);
1927 OPEN_DEFAULT = 0, /* Use default view switching. */
1928 OPEN_SPLIT = 1, /* Split current view. */
1929 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1930 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1934 open_view(struct view *prev, enum request request, enum open_flags flags)
1936 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1937 bool split = !!(flags & OPEN_SPLIT);
1938 bool reload = !!(flags & OPEN_RELOAD);
1939 struct view *view = VIEW(request);
1940 int nviews = displayed_views();
1941 struct view *base_view = display[0];
1943 if (view == prev && nviews == 1 && !reload) {
1944 report("Already in %s view", view->name);
1948 if (view == VIEW(REQ_VIEW_HELP)) {
1949 open_help_view(view);
1951 } else if ((reload || strcmp(view->vid, view->id)) &&
1952 !begin_update(view)) {
1953 report("Failed to load %s view", view->name);
1962 /* Maximize the current view. */
1963 memset(display, 0, sizeof(display));
1965 display[current_view] = view;
1968 /* Resize the view when switching between split- and full-screen,
1969 * or when switching between two different full-screen views. */
1970 if (nviews != displayed_views() ||
1971 (nviews == 1 && base_view != display[0]))
1974 if (split && prev->lineno - prev->offset >= prev->height) {
1975 /* Take the title line into account. */
1976 int lines = prev->lineno - prev->offset - prev->height + 1;
1978 /* Scroll the view that was split if the current line is
1979 * outside the new limited view. */
1980 do_scroll_view(prev, lines, TRUE);
1983 if (prev && view != prev) {
1984 if (split && !backgrounded) {
1985 /* "Blur" the previous view. */
1986 update_view_title(prev);
1989 view->parent = prev;
1992 if (view->pipe && view->lines == 0) {
1993 /* Clear the old view and let the incremental updating refill
2002 /* If the view is backgrounded the above calls to report()
2003 * won't redraw the view title. */
2005 update_view_title(view);
2010 * User request switch noodle
2014 view_driver(struct view *view, enum request request)
2021 case REQ_MOVE_PAGE_UP:
2022 case REQ_MOVE_PAGE_DOWN:
2023 case REQ_MOVE_FIRST_LINE:
2024 case REQ_MOVE_LAST_LINE:
2025 move_view(view, request, TRUE);
2028 case REQ_SCROLL_LINE_DOWN:
2029 case REQ_SCROLL_LINE_UP:
2030 case REQ_SCROLL_PAGE_DOWN:
2031 case REQ_SCROLL_PAGE_UP:
2032 scroll_view(view, request);
2037 report("No file chosen, press 't' to open tree view");
2046 case REQ_VIEW_PAGER:
2047 open_view(view, request, OPEN_DEFAULT);
2052 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2054 if ((view == VIEW(REQ_VIEW_DIFF) &&
2055 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2056 (view == VIEW(REQ_VIEW_BLOB) &&
2057 view->parent == VIEW(REQ_VIEW_TREE))) {
2058 bool redraw = display[1] == view;
2060 view = view->parent;
2061 move_view(view, request, redraw);
2063 update_view_title(view);
2065 move_view(view, request, TRUE);
2072 report("Nothing to enter");
2075 return view->ops->enter(view, &view->line[view->lineno]);
2079 int nviews = displayed_views();
2080 int next_view = (current_view + 1) % nviews;
2082 if (next_view == current_view) {
2083 report("Only one view is displayed");
2087 current_view = next_view;
2088 /* Blur out the title of the previous view. */
2089 update_view_title(view);
2093 case REQ_TOGGLE_LINENO:
2094 opt_line_number = !opt_line_number;
2098 case REQ_TOGGLE_REV_GRAPH:
2099 opt_rev_graph = !opt_rev_graph;
2104 /* Always reload^Wrerun commands from the prompt. */
2105 open_view(view, opt_request, OPEN_RELOAD);
2109 case REQ_SEARCH_BACK:
2110 search_view(view, request, opt_search);
2115 find_next(view, request);
2118 case REQ_STOP_LOADING:
2119 for (i = 0; i < ARRAY_SIZE(views); i++) {
2122 report("Stopped loading the %s view", view->name),
2127 case REQ_SHOW_VERSION:
2128 report("%s (built %s)", VERSION, __DATE__);
2131 case REQ_SCREEN_RESIZE:
2134 case REQ_SCREEN_REDRAW:
2142 case REQ_VIEW_CLOSE:
2143 /* XXX: Mark closed views by letting view->parent point to the
2144 * view itself. Parents to closed view should never be
2147 view->parent->parent != view->parent) {
2148 memset(display, 0, sizeof(display));
2150 display[current_view] = view->parent;
2151 view->parent = view;
2161 /* An unknown key will show most commonly used commands. */
2162 report("Unknown key, press 'h' for help");
2175 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2177 char *text = line->data;
2178 enum line_type type = line->type;
2179 int textlen = strlen(text);
2182 wmove(view->win, lineno, 0);
2184 if (view->offset + lineno == view->lineno) {
2185 if (type == LINE_COMMIT) {
2186 string_copy(view->ref, text + 7);
2187 string_copy(ref_commit, view->ref);
2189 } else if (type == LINE_TREE_DIR || type == LINE_TREE_FILE) {
2190 strncpy(view->ref, text + STRING_SIZE("100644 blob "), 41);
2192 string_copy(ref_blob, view->ref);
2196 wchgat(view->win, -1, 0, type, NULL);
2199 attr = get_line_attr(type);
2200 wattrset(view->win, attr);
2202 if (opt_line_number || opt_tab_size < TABSIZE) {
2203 static char spaces[] = " ";
2204 int col_offset = 0, col = 0;
2206 if (opt_line_number) {
2207 unsigned long real_lineno = view->offset + lineno + 1;
2209 if (real_lineno == 1 ||
2210 (real_lineno % opt_num_interval) == 0) {
2211 wprintw(view->win, "%.*d", view->digits, real_lineno);
2214 waddnstr(view->win, spaces,
2215 MIN(view->digits, STRING_SIZE(spaces)));
2217 waddstr(view->win, ": ");
2218 col_offset = view->digits + 2;
2221 while (text && col_offset + col < view->width) {
2222 int cols_max = view->width - col_offset - col;
2226 if (*text == '\t') {
2228 assert(sizeof(spaces) > TABSIZE);
2230 cols = opt_tab_size - (col % opt_tab_size);
2233 text = strchr(text, '\t');
2234 cols = line ? text - pos : strlen(pos);
2237 waddnstr(view->win, pos, MIN(cols, cols_max));
2242 int col = 0, pos = 0;
2244 for (; pos < textlen && col < view->width; pos++, col++)
2245 if (text[pos] == '\t')
2246 col += TABSIZE - (col % TABSIZE) - 1;
2248 waddnstr(view->win, text, pos);
2255 add_describe_ref(char *buf, int *bufpos, char *commit_id, const char *sep)
2257 char refbuf[SIZEOF_STR];
2261 if (!string_format(refbuf, "git describe %s", commit_id))
2264 pipe = popen(refbuf, "r");
2268 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2269 ref = chomp_string(ref);
2275 /* This is the only fatal call, since it can "corrupt" the buffer. */
2276 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2283 add_pager_refs(struct view *view, struct line *line)
2285 char buf[SIZEOF_STR];
2286 char *commit_id = line->data + STRING_SIZE("commit ");
2288 int bufpos = 0, refpos = 0;
2289 const char *sep = "Refs: ";
2290 bool is_tag = FALSE;
2292 assert(line->type == LINE_COMMIT);
2294 refs = get_refs(commit_id);
2296 if (view == VIEW(REQ_VIEW_DIFF))
2297 goto try_add_describe_ref;
2302 struct ref *ref = refs[refpos];
2303 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2305 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2310 } while (refs[refpos++]->next);
2312 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2313 try_add_describe_ref:
2314 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2318 if (!realloc_lines(view, view->line_size + 1))
2321 line = &view->line[view->lines];
2322 line->data = strdup(buf);
2326 line->type = LINE_PP_REFS;
2331 pager_read(struct view *view, char *data)
2333 struct line *line = &view->line[view->lines];
2335 line->data = strdup(data);
2339 line->type = get_line_type(line->data);
2342 if (line->type == LINE_COMMIT &&
2343 (view == VIEW(REQ_VIEW_DIFF) ||
2344 view == VIEW(REQ_VIEW_LOG)))
2345 add_pager_refs(view, line);
2351 pager_enter(struct view *view, struct line *line)
2355 if (line->type == LINE_COMMIT &&
2356 (view == VIEW(REQ_VIEW_LOG) ||
2357 view == VIEW(REQ_VIEW_PAGER))) {
2358 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2362 /* Always scroll the view even if it was split. That way
2363 * you can use Enter to scroll through the log view and
2364 * split open each commit diff. */
2365 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2367 /* FIXME: A minor workaround. Scrolling the view will call report("")
2368 * but if we are scrolling a non-current view this won't properly
2369 * update the view title. */
2371 update_view_title(view);
2377 pager_grep(struct view *view, struct line *line)
2380 char *text = line->data;
2385 if (regexec(&view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2391 static struct view_ops pager_ops = {
2404 /* Parse output from git ls-tree:
2406 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2407 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2408 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2409 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2412 #define SIZEOF_TREE_ATTR \
2413 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2415 #define TREE_UP_FORMAT "040000 tree %s\t.."
2418 tree_compare_entry(enum line_type type1, char *name1,
2419 enum line_type type2, char *name2)
2421 if (type1 != type2) {
2422 if (type1 == LINE_TREE_DIR)
2427 return strcmp(name1, name2);
2431 tree_read(struct view *view, char *text)
2433 size_t textlen = strlen(text);
2434 char buf[SIZEOF_STR];
2436 enum line_type type;
2438 if (textlen <= SIZEOF_TREE_ATTR)
2441 type = text[STRING_SIZE("100644 ")] == 't'
2442 ? LINE_TREE_DIR : LINE_TREE_FILE;
2444 /* The first time around ... */
2446 /* Add path info line */
2447 if (snprintf(buf, sizeof(buf), "Directory path /%s", opt_path) < sizeof(buf) &&
2448 realloc_lines(view, view->line_size + 1) &&
2449 pager_read(view, buf))
2450 view->line[view->lines - 1].type = LINE_DEFAULT;
2454 /* Insert "link" to parent directory. */
2456 snprintf(buf, sizeof(buf), TREE_UP_FORMAT, view->ref) < sizeof(buf) &&
2457 realloc_lines(view, view->line_size + 1) &&
2458 pager_read(view, buf))
2459 view->line[view->lines - 1].type = LINE_TREE_DIR;
2464 /* Strip the path part ... */
2466 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2467 size_t striplen = strlen(opt_path);
2468 char *path = text + SIZEOF_TREE_ATTR;
2470 if (pathlen > striplen)
2471 memmove(path, path + striplen,
2472 pathlen - striplen + 1);
2475 /* Skip "Directory ..." and ".." line. */
2476 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2477 struct line *line = &view->line[pos];
2478 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2479 char *path2 = text + SIZEOF_TREE_ATTR;
2480 int cmp = tree_compare_entry(line->type, path1, type, path2);
2485 text = strdup(text);
2489 if (view->lines > pos)
2490 memmove(&view->line[pos + 1], &view->line[pos],
2491 (view->lines - pos) * sizeof(*line));
2493 line = &view->line[pos];
2500 if (!pager_read(view, text))
2503 view->line[view->lines - 1].type = type;
2508 tree_enter(struct view *view, struct line *line)
2510 enum open_flags flags = OPEN_DEFAULT;
2511 char *data = line->data;
2512 enum request request;
2514 switch (line->type) {
2516 /* Depending on whether it is a subdir or parent (updir?) link
2517 * mangle the path buffer. */
2518 if (line == &view->line[1] && *opt_path) {
2519 size_t path_len = strlen(opt_path);
2520 char *dirsep = opt_path + path_len - 1;
2522 while (dirsep > opt_path && dirsep[-1] != '/')
2528 int pathlen = strlen(opt_path);
2529 char *basename = data + SIZEOF_TREE_ATTR;
2531 string_format_from(opt_path, &pathlen, "%s/", basename);
2534 /* Trees and subtrees share the same ID, so they are not not
2535 * unique like blobs. */
2536 flags |= OPEN_RELOAD;
2537 request = REQ_VIEW_TREE;
2540 case LINE_TREE_FILE:
2541 /* This causes the blob view to become split, and not having it
2542 * in the tree dir case will make the blob view automatically
2543 * disappear when moving to a different directory. */
2544 flags |= OPEN_SPLIT;
2545 request = REQ_VIEW_BLOB;
2552 open_view(view, request, flags);
2554 if (!VIEW(request)->pipe)
2557 /* For tree views insert the path to the parent as the first line. */
2558 if (request == REQ_VIEW_BLOB) {
2559 /* Mirror what is showed in the title bar. */
2560 string_ncopy(ref_blob, data + STRING_SIZE("100644 blob "), 40);
2561 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2568 static struct view_ops tree_ops = {
2577 blob_read(struct view *view, char *line)
2579 bool state = pager_read(view, line);
2582 view->line[view->lines - 1].type = LINE_DEFAULT;
2587 static struct view_ops blob_ops = {
2601 char id[41]; /* SHA1 ID. */
2602 char title[75]; /* First line of the commit message. */
2603 char author[75]; /* Author of the commit. */
2604 struct tm time; /* Date from the author ident. */
2605 struct ref **refs; /* Repository references. */
2606 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2607 size_t graph_size; /* The width of the graph array. */
2611 main_draw(struct view *view, struct line *line, unsigned int lineno)
2613 char buf[DATE_COLS + 1];
2614 struct commit *commit = line->data;
2615 enum line_type type;
2621 if (!*commit->author)
2624 wmove(view->win, lineno, col);
2626 if (view->offset + lineno == view->lineno) {
2627 string_copy(view->ref, commit->id);
2628 string_copy(ref_commit, view->ref);
2630 wattrset(view->win, get_line_attr(type));
2631 wchgat(view->win, -1, 0, type, NULL);
2634 type = LINE_MAIN_COMMIT;
2635 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2638 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2639 waddnstr(view->win, buf, timelen);
2640 waddstr(view->win, " ");
2643 wmove(view->win, lineno, col);
2644 if (type != LINE_CURSOR)
2645 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2648 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2650 authorlen = strlen(commit->author);
2651 if (authorlen > AUTHOR_COLS - 2) {
2652 authorlen = AUTHOR_COLS - 2;
2658 waddnstr(view->win, commit->author, authorlen);
2659 if (type != LINE_CURSOR)
2660 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2661 waddch(view->win, '~');
2663 waddstr(view->win, commit->author);
2667 if (type != LINE_CURSOR)
2668 wattrset(view->win, A_NORMAL);
2670 if (opt_rev_graph && commit->graph_size) {
2673 wmove(view->win, lineno, col);
2674 /* Using waddch() instead of waddnstr() ensures that
2675 * they'll be rendered correctly for the cursor line. */
2676 for (i = 0; i < commit->graph_size; i++)
2677 waddch(view->win, commit->graph[i]);
2679 col += commit->graph_size + 1;
2682 wmove(view->win, lineno, col);
2688 if (type == LINE_CURSOR)
2690 else if (commit->refs[i]->tag)
2691 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2693 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2694 waddstr(view->win, "[");
2695 waddstr(view->win, commit->refs[i]->name);
2696 waddstr(view->win, "]");
2697 if (type != LINE_CURSOR)
2698 wattrset(view->win, A_NORMAL);
2699 waddstr(view->win, " ");
2700 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2701 } while (commit->refs[i++]->next);
2704 if (type != LINE_CURSOR)
2705 wattrset(view->win, get_line_attr(type));
2708 int titlelen = strlen(commit->title);
2710 if (col + titlelen > view->width)
2711 titlelen = view->width - col;
2713 waddnstr(view->win, commit->title, titlelen);
2719 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2721 main_read(struct view *view, char *line)
2723 enum line_type type = get_line_type(line);
2724 struct commit *commit = view->lines
2725 ? view->line[view->lines - 1].data : NULL;
2729 commit = calloc(1, sizeof(struct commit));
2733 line += STRING_SIZE("commit ");
2735 view->line[view->lines++].data = commit;
2736 string_copy(commit->id, line);
2737 commit->refs = get_refs(commit->id);
2738 commit->graph[commit->graph_size++] = ACS_LTEE;
2743 char *ident = line + STRING_SIZE("author ");
2744 char *end = strchr(ident, '<');
2750 char *email = end + 1;
2752 for (; end > ident && isspace(end[-1]); end--) ;
2754 if (end == ident && *email) {
2756 end = strchr(ident, '>');
2757 for (; end > ident && isspace(end[-1]); end--) ;
2762 /* End is NULL or ident meaning there's no author. */
2766 string_copy(commit->author, ident);
2768 /* Parse epoch and timezone */
2770 char *secs = strchr(end + 1, '>');
2774 if (!secs || secs[1] != ' ')
2778 time = (time_t) atol(secs);
2779 zone = strchr(secs, ' ');
2780 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2784 tz = ('0' - zone[1]) * 60 * 60 * 10;
2785 tz += ('0' - zone[2]) * 60 * 60;
2786 tz += ('0' - zone[3]) * 60;
2787 tz += ('0' - zone[4]) * 60;
2794 gmtime_r(&time, &commit->time);
2802 /* Fill in the commit title if it has not already been set. */
2803 if (commit->title[0])
2806 /* Require titles to start with a non-space character at the
2807 * offset used by git log. */
2808 /* FIXME: More gracefull handling of titles; append "..." to
2809 * shortened titles, etc. */
2810 if (strncmp(line, " ", 4) ||
2814 string_copy(commit->title, line + 4);
2821 main_enter(struct view *view, struct line *line)
2823 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2825 open_view(view, REQ_VIEW_DIFF, flags);
2830 main_grep(struct view *view, struct line *line)
2832 struct commit *commit = line->data;
2833 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2834 char buf[DATE_COLS + 1];
2837 for (state = S_TITLE; state < S_END; state++) {
2841 case S_TITLE: text = commit->title; break;
2842 case S_AUTHOR: text = commit->author; break;
2844 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2853 if (regexec(&view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2860 static struct view_ops main_ops = {
2870 * Unicode / UTF-8 handling
2872 * NOTE: Much of the following code for dealing with unicode is derived from
2873 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2874 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2877 /* I've (over)annotated a lot of code snippets because I am not entirely
2878 * confident that the approach taken by this small UTF-8 interface is correct.
2882 unicode_width(unsigned long c)
2885 (c <= 0x115f /* Hangul Jamo */
2888 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2890 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2891 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2892 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2893 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2894 || (c >= 0xffe0 && c <= 0xffe6)
2895 || (c >= 0x20000 && c <= 0x2fffd)
2896 || (c >= 0x30000 && c <= 0x3fffd)))
2902 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2903 * Illegal bytes are set one. */
2904 static const unsigned char utf8_bytes[256] = {
2905 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,
2906 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,
2907 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,
2908 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,
2909 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,
2910 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,
2911 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,
2912 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,
2915 /* Decode UTF-8 multi-byte representation into a unicode character. */
2916 static inline unsigned long
2917 utf8_to_unicode(const char *string, size_t length)
2919 unsigned long unicode;
2923 unicode = string[0];
2926 unicode = (string[0] & 0x1f) << 6;
2927 unicode += (string[1] & 0x3f);
2930 unicode = (string[0] & 0x0f) << 12;
2931 unicode += ((string[1] & 0x3f) << 6);
2932 unicode += (string[2] & 0x3f);
2935 unicode = (string[0] & 0x0f) << 18;
2936 unicode += ((string[1] & 0x3f) << 12);
2937 unicode += ((string[2] & 0x3f) << 6);
2938 unicode += (string[3] & 0x3f);
2941 unicode = (string[0] & 0x0f) << 24;
2942 unicode += ((string[1] & 0x3f) << 18);
2943 unicode += ((string[2] & 0x3f) << 12);
2944 unicode += ((string[3] & 0x3f) << 6);
2945 unicode += (string[4] & 0x3f);
2948 unicode = (string[0] & 0x01) << 30;
2949 unicode += ((string[1] & 0x3f) << 24);
2950 unicode += ((string[2] & 0x3f) << 18);
2951 unicode += ((string[3] & 0x3f) << 12);
2952 unicode += ((string[4] & 0x3f) << 6);
2953 unicode += (string[5] & 0x3f);
2956 die("Invalid unicode length");
2959 /* Invalid characters could return the special 0xfffd value but NUL
2960 * should be just as good. */
2961 return unicode > 0xffff ? 0 : unicode;
2964 /* Calculates how much of string can be shown within the given maximum width
2965 * and sets trimmed parameter to non-zero value if all of string could not be
2968 * Additionally, adds to coloffset how many many columns to move to align with
2969 * the expected position. Takes into account how multi-byte and double-width
2970 * characters will effect the cursor position.
2972 * Returns the number of bytes to output from string to satisfy max_width. */
2974 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
2976 const char *start = string;
2977 const char *end = strchr(string, '\0');
2983 while (string < end) {
2984 int c = *(unsigned char *) string;
2985 unsigned char bytes = utf8_bytes[c];
2987 unsigned long unicode;
2989 if (string + bytes > end)
2992 /* Change representation to figure out whether
2993 * it is a single- or double-width character. */
2995 unicode = utf8_to_unicode(string, bytes);
2996 /* FIXME: Graceful handling of invalid unicode character. */
3000 ucwidth = unicode_width(unicode);
3002 if (width > max_width) {
3007 /* The column offset collects the differences between the
3008 * number of bytes encoding a character and the number of
3009 * columns will be used for rendering said character.
3011 * So if some character A is encoded in 2 bytes, but will be
3012 * represented on the screen using only 1 byte this will and up
3013 * adding 1 to the multi-byte column offset.
3015 * Assumes that no double-width character can be encoding in
3016 * less than two bytes. */
3017 if (bytes > ucwidth)
3018 mbwidth += bytes - ucwidth;
3023 *coloffset += mbwidth;
3025 return string - start;
3033 /* Whether or not the curses interface has been initialized. */
3034 static bool cursed = FALSE;
3036 /* The status window is used for polling keystrokes. */
3037 static WINDOW *status_win;
3039 /* Update status and title window. */
3041 report(const char *msg, ...)
3043 static bool empty = TRUE;
3044 struct view *view = display[current_view];
3046 if (!empty || *msg) {
3049 va_start(args, msg);
3052 wmove(status_win, 0, 0);
3054 vwprintw(status_win, msg, args);
3059 wrefresh(status_win);
3064 update_view_title(view);
3065 update_display_cursor();
3068 /* Controls when nodelay should be in effect when polling user input. */
3070 set_nonblocking_input(bool loading)
3072 static unsigned int loading_views;
3074 if ((loading == FALSE && loading_views-- == 1) ||
3075 (loading == TRUE && loading_views++ == 0))
3076 nodelay(status_win, loading);
3084 /* Initialize the curses library */
3085 if (isatty(STDIN_FILENO)) {
3086 cursed = !!initscr();
3088 /* Leave stdin and stdout alone when acting as a pager. */
3089 FILE *io = fopen("/dev/tty", "r+");
3092 die("Failed to open /dev/tty");
3093 cursed = !!newterm(NULL, io, io);
3097 die("Failed to initialize curses");
3099 nonl(); /* Tell curses not to do NL->CR/NL on output */
3100 cbreak(); /* Take input chars one at a time, no wait for \n */
3101 noecho(); /* Don't echo input */
3102 leaveok(stdscr, TRUE);
3107 getmaxyx(stdscr, y, x);
3108 status_win = newwin(1, 0, y - 1, 0);
3110 die("Failed to create status window");
3112 /* Enable keyboard mapping */
3113 keypad(status_win, TRUE);
3114 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3118 read_prompt(const char *prompt)
3120 enum { READING, STOP, CANCEL } status = READING;
3121 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3124 while (status == READING) {
3128 foreach_displayed_view (view, i)
3131 report("%s%.*s", prompt, pos, buf);
3132 /* Refresh, accept single keystroke of input */
3133 key = wgetch(status_win);
3138 status = pos ? STOP : CANCEL;
3156 if (pos >= sizeof(buf)) {
3157 report("Input string too long");
3162 buf[pos++] = (char) key;
3166 if (status == CANCEL) {
3167 /* Clear the status window */
3178 * Repository references
3181 static struct ref *refs;
3182 static size_t refs_size;
3184 /* Id <-> ref store */
3185 static struct ref ***id_refs;
3186 static size_t id_refs_size;
3188 static struct ref **
3191 struct ref ***tmp_id_refs;
3192 struct ref **ref_list = NULL;
3193 size_t ref_list_size = 0;
3196 for (i = 0; i < id_refs_size; i++)
3197 if (!strcmp(id, id_refs[i][0]->id))
3200 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3204 id_refs = tmp_id_refs;
3206 for (i = 0; i < refs_size; i++) {
3209 if (strcmp(id, refs[i].id))
3212 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3220 if (ref_list_size > 0)
3221 ref_list[ref_list_size - 1]->next = 1;
3222 ref_list[ref_list_size] = &refs[i];
3224 /* XXX: The properties of the commit chains ensures that we can
3225 * safely modify the shared ref. The repo references will
3226 * always be similar for the same id. */
3227 ref_list[ref_list_size]->next = 0;
3232 id_refs[id_refs_size++] = ref_list;
3238 read_ref(char *id, int idlen, char *name, int namelen)
3243 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3244 /* Commits referenced by tags has "^{}" appended. */
3245 if (name[namelen - 1] != '}')
3248 while (namelen > 0 && name[namelen] != '^')
3252 namelen -= STRING_SIZE("refs/tags/");
3253 name += STRING_SIZE("refs/tags/");
3255 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3256 namelen -= STRING_SIZE("refs/heads/");
3257 name += STRING_SIZE("refs/heads/");
3259 } else if (!strcmp(name, "HEAD")) {
3263 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3267 ref = &refs[refs_size++];
3268 ref->name = malloc(namelen + 1);
3272 strncpy(ref->name, name, namelen);
3273 ref->name[namelen] = 0;
3275 string_copy(ref->id, id);
3283 const char *cmd_env = getenv("TIG_LS_REMOTE");
3284 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3286 return read_properties(popen(cmd, "r"), "\t", read_ref);
3290 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3292 if (!strcmp(name, "i18n.commitencoding"))
3293 string_copy(opt_encoding, value);
3299 load_repo_config(void)
3301 return read_properties(popen("git repo-config --list", "r"),
3302 "=", read_repo_config_option);
3306 read_properties(FILE *pipe, const char *separators,
3307 int (*read_property)(char *, int, char *, int))
3309 char buffer[BUFSIZ];
3316 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3321 name = chomp_string(name);
3322 namelen = strcspn(name, separators);
3324 if (name[namelen]) {
3326 value = chomp_string(name + namelen + 1);
3327 valuelen = strlen(value);
3334 state = read_property(name, namelen, value, valuelen);
3337 if (state != ERR && ferror(pipe))
3350 static void __NORETURN
3353 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3359 static void __NORETURN
3360 die(const char *err, ...)
3366 va_start(args, err);
3367 fputs("tig: ", stderr);
3368 vfprintf(stderr, err, args);
3369 fputs("\n", stderr);
3376 main(int argc, char *argv[])
3379 enum request request;
3382 signal(SIGINT, quit);
3384 if (setlocale(LC_ALL, "")) {
3385 string_copy(opt_codeset, nl_langinfo(CODESET));
3388 if (load_options() == ERR)
3389 die("Failed to load user config.");
3391 /* Load the repo config file so options can be overwritten from
3392 * the command line. */
3393 if (load_repo_config() == ERR)
3394 die("Failed to load repo config.");
3396 if (!parse_options(argc, argv))
3399 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3400 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3401 if (opt_iconv == (iconv_t) -1)
3402 die("Failed to initialize character set conversion");
3405 if (load_refs() == ERR)
3406 die("Failed to load refs.");
3408 /* Require a git repository unless when running in pager mode. */
3409 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3410 die("Not a git repository");
3412 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3413 view->cmd_env = getenv(view->cmd_env);
3415 request = opt_request;
3419 while (view_driver(display[current_view], request)) {
3423 foreach_displayed_view (view, i)
3426 /* Refresh, accept single keystroke of input */
3427 key = wgetch(status_win);
3429 request = get_keybinding(display[current_view]->keymap, key);
3431 /* Some low-level request handling. This keeps access to
3432 * status_win restricted. */
3436 char *cmd = read_prompt(":");
3438 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3439 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3440 opt_request = REQ_VIEW_DIFF;
3442 opt_request = REQ_VIEW_PAGER;
3451 case REQ_SEARCH_BACK:
3453 const char *prompt = request == REQ_SEARCH
3455 char *search = read_prompt(prompt);
3458 string_copy(opt_search, search);
3463 case REQ_SCREEN_RESIZE:
3467 getmaxyx(stdscr, height, width);
3469 /* Resize the status view and let the view driver take
3470 * care of resizing the displayed views. */
3471 wresize(status_win, 1, width);
3472 mvwin(status_win, height - 1, 0);
3473 wrefresh(status_win);