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_do(char *dst, size_t dstlen, const char *src, size_t srclen)
150 if (srclen > dstlen - 1)
153 strncpy(dst, src, srclen);
157 /* Shorthands for safely copying into a fixed buffer. */
159 #define string_copy(dst, src) \
160 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
162 #define string_ncopy(dst, src, srclen) \
163 string_ncopy_do(dst, sizeof(dst), src, srclen)
166 chomp_string(char *name)
170 while (isspace(*name))
173 namelen = strlen(name) - 1;
174 while (namelen > 0 && isspace(name[namelen]))
181 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
184 size_t pos = bufpos ? *bufpos : 0;
187 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
193 return pos >= bufsize ? FALSE : TRUE;
196 #define string_format(buf, fmt, args...) \
197 string_nformat(buf, sizeof(buf), NULL, fmt, args)
199 #define string_format_from(buf, from, fmt, args...) \
200 string_nformat(buf, sizeof(buf), from, fmt, args)
203 string_enum_compare(const char *str1, const char *str2, int len)
207 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
209 /* Diff-Header == DIFF_HEADER */
210 for (i = 0; i < len; i++) {
211 if (toupper(str1[i]) == toupper(str2[i]))
214 if (string_enum_sep(str1[i]) &&
215 string_enum_sep(str2[i]))
218 return str1[i] - str2[i];
226 * NOTE: The following is a slightly modified copy of the git project's shell
227 * quoting routines found in the quote.c file.
229 * Help to copy the thing properly quoted for the shell safety. any single
230 * quote is replaced with '\'', any exclamation point is replaced with '\!',
231 * and the whole thing is enclosed in a
234 * original sq_quote result
235 * name ==> name ==> 'name'
236 * a b ==> a b ==> 'a b'
237 * a'b ==> a'\''b ==> 'a'\''b'
238 * a!b ==> a'\!'b ==> 'a'\!'b'
242 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
246 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
249 while ((c = *src++)) {
250 if (c == '\'' || c == '!') {
270 /* XXX: Keep the view request first and in sync with views[]. */ \
271 REQ_GROUP("View switching") \
272 REQ_(VIEW_MAIN, "Show main view"), \
273 REQ_(VIEW_DIFF, "Show diff view"), \
274 REQ_(VIEW_LOG, "Show log view"), \
275 REQ_(VIEW_TREE, "Show tree view"), \
276 REQ_(VIEW_BLOB, "Show blob view"), \
277 REQ_(VIEW_HELP, "Show help page"), \
278 REQ_(VIEW_PAGER, "Show pager view"), \
280 REQ_GROUP("View manipulation") \
281 REQ_(ENTER, "Enter current line and scroll"), \
282 REQ_(NEXT, "Move to next"), \
283 REQ_(PREVIOUS, "Move to previous"), \
284 REQ_(VIEW_NEXT, "Move focus to next view"), \
285 REQ_(VIEW_CLOSE, "Close the current view"), \
286 REQ_(QUIT, "Close all views and quit"), \
288 REQ_GROUP("Cursor navigation") \
289 REQ_(MOVE_UP, "Move cursor one line up"), \
290 REQ_(MOVE_DOWN, "Move cursor one line down"), \
291 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
292 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
293 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
294 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
296 REQ_GROUP("Scrolling") \
297 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
298 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
299 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
300 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
302 REQ_GROUP("Searching") \
303 REQ_(SEARCH, "Search the view"), \
304 REQ_(SEARCH_BACK, "Search backwards in the view"), \
305 REQ_(FIND_NEXT, "Find next search match"), \
306 REQ_(FIND_PREV, "Find previous search match"), \
309 REQ_(NONE, "Do nothing"), \
310 REQ_(PROMPT, "Bring up the prompt"), \
311 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
312 REQ_(SCREEN_RESIZE, "Resize the screen"), \
313 REQ_(SHOW_VERSION, "Show version information"), \
314 REQ_(STOP_LOADING, "Stop all loading views"), \
315 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
316 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
319 /* User action requests. */
321 #define REQ_GROUP(help)
322 #define REQ_(req, help) REQ_##req
324 /* Offset all requests to avoid conflicts with ncurses getch values. */
325 REQ_OFFSET = KEY_MAX + 1,
333 struct request_info {
334 enum request request;
340 static struct request_info req_info[] = {
341 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
342 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
349 get_request(const char *name)
351 int namelen = strlen(name);
354 for (i = 0; i < ARRAY_SIZE(req_info); i++)
355 if (req_info[i].namelen == namelen &&
356 !string_enum_compare(req_info[i].name, name, namelen))
357 return req_info[i].request;
367 static const char usage[] =
368 VERSION " (" __DATE__ ")\n"
370 "Usage: tig [options]\n"
371 " or: tig [options] [--] [git log options]\n"
372 " or: tig [options] log [git log options]\n"
373 " or: tig [options] diff [git diff options]\n"
374 " or: tig [options] show [git show options]\n"
375 " or: tig [options] < [git command output]\n"
378 " -l Start up in log view\n"
379 " -d Start up in diff view\n"
380 " -n[I], --line-number[=I] Show line numbers with given interval\n"
381 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
382 " -- Mark end of tig options\n"
383 " -v, --version Show version and exit\n"
384 " -h, --help Show help message and exit\n";
386 /* Option and state variables. */
387 static bool opt_line_number = FALSE;
388 static bool opt_rev_graph = TRUE;
389 static int opt_num_interval = NUMBER_INTERVAL;
390 static int opt_tab_size = TABSIZE;
391 static enum request opt_request = REQ_VIEW_MAIN;
392 static char opt_cmd[SIZEOF_STR] = "";
393 static char opt_path[SIZEOF_STR] = "";
394 static FILE *opt_pipe = NULL;
395 static char opt_encoding[20] = "UTF-8";
396 static bool opt_utf8 = TRUE;
397 static char opt_codeset[20] = "UTF-8";
398 static iconv_t opt_iconv = ICONV_NONE;
399 static char opt_search[SIZEOF_STR] = "";
407 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
417 int namelen = strlen(name);
421 if (strncmp(opt, name, namelen))
424 if (opt[namelen] == '=')
425 value = opt + namelen + 1;
428 if (!short_name || opt[1] != short_name)
433 va_start(args, type);
434 if (type == OPT_INT) {
435 number = va_arg(args, int *);
437 *number = atoi(value);
444 /* Returns the index of log or diff command or -1 to exit. */
446 parse_options(int argc, char *argv[])
450 for (i = 1; i < argc; i++) {
453 if (!strcmp(opt, "-l")) {
454 opt_request = REQ_VIEW_LOG;
458 if (!strcmp(opt, "-d")) {
459 opt_request = REQ_VIEW_DIFF;
463 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
464 opt_line_number = TRUE;
468 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
469 opt_tab_size = MIN(opt_tab_size, TABSIZE);
473 if (check_option(opt, 'v', "version", OPT_NONE)) {
474 printf("tig version %s\n", VERSION);
478 if (check_option(opt, 'h', "help", OPT_NONE)) {
483 if (!strcmp(opt, "--")) {
488 if (!strcmp(opt, "log") ||
489 !strcmp(opt, "diff") ||
490 !strcmp(opt, "show")) {
491 opt_request = opt[0] == 'l'
492 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
496 if (opt[0] && opt[0] != '-')
499 die("unknown option '%s'\n\n%s", opt, usage);
502 if (!isatty(STDIN_FILENO)) {
503 opt_request = REQ_VIEW_PAGER;
506 } else if (i < argc) {
509 if (opt_request == REQ_VIEW_MAIN)
510 /* XXX: This is vulnerable to the user overriding
511 * options required for the main view parser. */
512 string_copy(opt_cmd, "git log --stat --pretty=raw");
514 string_copy(opt_cmd, "git");
515 buf_size = strlen(opt_cmd);
517 while (buf_size < sizeof(opt_cmd) && i < argc) {
518 opt_cmd[buf_size++] = ' ';
519 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
522 if (buf_size >= sizeof(opt_cmd))
523 die("command too long");
525 opt_cmd[buf_size] = 0;
529 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
537 * Line-oriented content detection.
541 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
542 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
543 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
544 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
545 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
546 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
547 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
549 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
550 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
555 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
556 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
557 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
558 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
559 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
562 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
563 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
564 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
566 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
567 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
568 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
569 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
570 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
571 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
572 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
573 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
574 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
575 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
576 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
577 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
578 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
579 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
580 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
583 #define LINE(type, line, fg, bg, attr) \
590 const char *name; /* Option name. */
591 int namelen; /* Size of option name. */
592 const char *line; /* The start of line to match. */
593 int linelen; /* Size of string to match. */
594 int fg, bg, attr; /* Color and text attributes for the lines. */
597 static struct line_info line_info[] = {
598 #define LINE(type, line, fg, bg, attr) \
599 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
604 static enum line_type
605 get_line_type(char *line)
607 int linelen = strlen(line);
610 for (type = 0; type < ARRAY_SIZE(line_info); type++)
611 /* Case insensitive search matches Signed-off-by lines better. */
612 if (linelen >= line_info[type].linelen &&
613 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
620 get_line_attr(enum line_type type)
622 assert(type < ARRAY_SIZE(line_info));
623 return COLOR_PAIR(type) | line_info[type].attr;
626 static struct line_info *
627 get_line_info(char *name, int namelen)
631 for (type = 0; type < ARRAY_SIZE(line_info); type++)
632 if (namelen == line_info[type].namelen &&
633 !string_enum_compare(line_info[type].name, name, namelen))
634 return &line_info[type];
642 int default_bg = COLOR_BLACK;
643 int default_fg = COLOR_WHITE;
648 if (use_default_colors() != ERR) {
653 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
654 struct line_info *info = &line_info[type];
655 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
656 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
658 init_pair(type, fg, bg);
664 void *data; /* User data */
674 enum request request;
675 struct keybinding *next;
678 static struct keybinding default_keybindings[] = {
680 { 'm', REQ_VIEW_MAIN },
681 { 'd', REQ_VIEW_DIFF },
682 { 'l', REQ_VIEW_LOG },
683 { 't', REQ_VIEW_TREE },
684 { 'f', REQ_VIEW_BLOB },
685 { 'p', REQ_VIEW_PAGER },
686 { 'h', REQ_VIEW_HELP },
688 /* View manipulation */
689 { 'q', REQ_VIEW_CLOSE },
690 { KEY_TAB, REQ_VIEW_NEXT },
691 { KEY_RETURN, REQ_ENTER },
692 { KEY_UP, REQ_PREVIOUS },
693 { KEY_DOWN, REQ_NEXT },
695 /* Cursor navigation */
696 { 'k', REQ_MOVE_UP },
697 { 'j', REQ_MOVE_DOWN },
698 { KEY_HOME, REQ_MOVE_FIRST_LINE },
699 { KEY_END, REQ_MOVE_LAST_LINE },
700 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
701 { ' ', REQ_MOVE_PAGE_DOWN },
702 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
703 { 'b', REQ_MOVE_PAGE_UP },
704 { '-', REQ_MOVE_PAGE_UP },
707 { KEY_IC, REQ_SCROLL_LINE_UP },
708 { KEY_DC, REQ_SCROLL_LINE_DOWN },
709 { 'w', REQ_SCROLL_PAGE_UP },
710 { 's', REQ_SCROLL_PAGE_DOWN },
714 { '?', REQ_SEARCH_BACK },
715 { 'n', REQ_FIND_NEXT },
716 { 'N', REQ_FIND_PREV },
720 { 'z', REQ_STOP_LOADING },
721 { 'v', REQ_SHOW_VERSION },
722 { 'r', REQ_SCREEN_REDRAW },
723 { '.', REQ_TOGGLE_LINENO },
724 { 'g', REQ_TOGGLE_REV_GRAPH },
727 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
730 /* Using the ncurses SIGWINCH handler. */
731 { KEY_RESIZE, REQ_SCREEN_RESIZE },
734 #define KEYMAP_INFO \
745 #define KEYMAP_(name) KEYMAP_##name
750 static struct int_map keymap_table[] = {
751 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
756 #define set_keymap(map, name) \
757 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
759 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
762 add_keybinding(enum keymap keymap, enum request request, int key)
764 struct keybinding *keybinding;
766 keybinding = calloc(1, sizeof(*keybinding));
768 die("Failed to allocate keybinding");
770 keybinding->alias = key;
771 keybinding->request = request;
772 keybinding->next = keybindings[keymap];
773 keybindings[keymap] = keybinding;
776 /* Looks for a key binding first in the given map, then in the generic map, and
777 * lastly in the default keybindings. */
779 get_keybinding(enum keymap keymap, int key)
781 struct keybinding *kbd;
784 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
785 if (kbd->alias == key)
788 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
789 if (kbd->alias == key)
792 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
793 if (default_keybindings[i].alias == key)
794 return default_keybindings[i].request;
796 return (enum request) key;
805 static struct key key_table[] = {
806 { "Enter", KEY_RETURN },
808 { "Backspace", KEY_BACKSPACE },
810 { "Escape", KEY_ESC },
811 { "Left", KEY_LEFT },
812 { "Right", KEY_RIGHT },
814 { "Down", KEY_DOWN },
815 { "Insert", KEY_IC },
816 { "Delete", KEY_DC },
818 { "Home", KEY_HOME },
820 { "PageUp", KEY_PPAGE },
821 { "PageDown", KEY_NPAGE },
831 { "F10", KEY_F(10) },
832 { "F11", KEY_F(11) },
833 { "F12", KEY_F(12) },
837 get_key_value(const char *name)
841 for (i = 0; i < ARRAY_SIZE(key_table); i++)
842 if (!strcasecmp(key_table[i].name, name))
843 return key_table[i].value;
845 if (strlen(name) == 1 && isprint(*name))
852 get_key(enum request request)
854 static char buf[BUFSIZ];
855 static char key_char[] = "'X'";
862 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
863 struct keybinding *keybinding = &default_keybindings[i];
867 if (keybinding->request != request)
870 for (key = 0; key < ARRAY_SIZE(key_table); key++)
871 if (key_table[key].value == keybinding->alias)
872 seq = key_table[key].name;
875 keybinding->alias < 127 &&
876 isprint(keybinding->alias)) {
877 key_char[1] = (char) keybinding->alias;
884 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
885 return "Too many keybindings!";
894 * User config file handling.
897 static struct int_map color_map[] = {
898 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
910 #define set_color(color, name) \
911 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
913 static struct int_map attr_map[] = {
914 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
924 #define set_attribute(attr, name) \
925 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
927 static int config_lineno;
928 static bool config_errors;
929 static char *config_msg;
931 /* Wants: object fgcolor bgcolor [attr] */
933 option_color_command(int argc, char *argv[])
935 struct line_info *info;
937 if (argc != 3 && argc != 4) {
938 config_msg = "Wrong number of arguments given to color command";
942 info = get_line_info(argv[0], strlen(argv[0]));
944 config_msg = "Unknown color name";
948 if (set_color(&info->fg, argv[1]) == ERR ||
949 set_color(&info->bg, argv[2]) == ERR) {
950 config_msg = "Unknown color";
954 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
955 config_msg = "Unknown attribute";
962 /* Wants: name = value */
964 option_set_command(int argc, char *argv[])
967 config_msg = "Wrong number of arguments given to set command";
971 if (strcmp(argv[1], "=")) {
972 config_msg = "No value assigned";
976 if (!strcmp(argv[0], "show-rev-graph")) {
977 opt_rev_graph = (!strcmp(argv[2], "1") ||
978 !strcmp(argv[2], "true") ||
979 !strcmp(argv[2], "yes"));
983 if (!strcmp(argv[0], "line-number-interval")) {
984 opt_num_interval = atoi(argv[2]);
988 if (!strcmp(argv[0], "tab-size")) {
989 opt_tab_size = atoi(argv[2]);
993 if (!strcmp(argv[0], "commit-encoding")) {
995 int delimiter = *arg;
1001 for (arg++, i = 0; arg[i]; i++)
1002 if (arg[i] == delimiter) {
1007 string_copy(opt_encoding, arg);
1012 config_msg = "Unknown variable name";
1016 /* Wants: mode request key */
1018 option_bind_command(int argc, char *argv[])
1020 enum request request;
1025 config_msg = "Wrong number of arguments given to bind command";
1029 if (set_keymap(&keymap, argv[0]) == ERR) {
1030 config_msg = "Unknown key map";
1034 key = get_key_value(argv[1]);
1036 config_msg = "Unknown key";
1040 request = get_request(argv[2]);
1041 if (request == REQ_UNKNOWN) {
1042 config_msg = "Unknown request name";
1046 add_keybinding(keymap, request, key);
1052 set_option(char *opt, char *value)
1059 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1060 argv[argc++] = value;
1067 while (isspace(*value))
1071 if (!strcmp(opt, "color"))
1072 return option_color_command(argc, argv);
1074 if (!strcmp(opt, "set"))
1075 return option_set_command(argc, argv);
1077 if (!strcmp(opt, "bind"))
1078 return option_bind_command(argc, argv);
1080 config_msg = "Unknown option command";
1085 read_option(char *opt, int optlen, char *value, int valuelen)
1090 config_msg = "Internal error";
1092 /* Check for comment markers, since read_properties() will
1093 * only ensure opt and value are split at first " \t". */
1094 optlen = strcspn(opt, "#");
1098 if (opt[optlen] != 0) {
1099 config_msg = "No option value";
1103 /* Look for comment endings in the value. */
1104 int len = strcspn(value, "#");
1106 if (len < valuelen) {
1108 value[valuelen] = 0;
1111 status = set_option(opt, value);
1114 if (status == ERR) {
1115 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1116 config_lineno, optlen, opt, config_msg);
1117 config_errors = TRUE;
1120 /* Always keep going if errors are encountered. */
1127 char *home = getenv("HOME");
1128 char buf[SIZEOF_STR];
1132 config_errors = FALSE;
1134 if (!home || !string_format(buf, "%s/.tigrc", home))
1137 /* It's ok that the file doesn't exist. */
1138 file = fopen(buf, "r");
1142 if (read_properties(file, " \t", read_option) == ERR ||
1143 config_errors == TRUE)
1144 fprintf(stderr, "Errors while loading %s.\n", buf);
1157 /* The display array of active views and the index of the current view. */
1158 static struct view *display[2];
1159 static unsigned int current_view;
1161 #define foreach_displayed_view(view, i) \
1162 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1164 #define displayed_views() (display[1] != NULL ? 2 : 1)
1166 /* Current head and commit ID */
1167 static char ref_blob[SIZEOF_REF] = "";
1168 static char ref_commit[SIZEOF_REF] = "HEAD";
1169 static char ref_head[SIZEOF_REF] = "HEAD";
1172 const char *name; /* View name */
1173 const char *cmd_fmt; /* Default command line format */
1174 const char *cmd_env; /* Command line set via environment */
1175 const char *id; /* Points to either of ref_{head,commit,blob} */
1177 struct view_ops *ops; /* View operations */
1179 enum keymap keymap; /* What keymap does this view have */
1181 char cmd[SIZEOF_STR]; /* Command buffer */
1182 char ref[SIZEOF_REF]; /* Hovered commit reference */
1183 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1185 int height, width; /* The width and height of the main window */
1186 WINDOW *win; /* The main window */
1187 WINDOW *title; /* The title window living below the main window */
1190 unsigned long offset; /* Offset of the window top */
1191 unsigned long lineno; /* Current line number */
1194 char grep[SIZEOF_STR]; /* Search string */
1195 regex_t *regex; /* Pre-compiled regex */
1197 /* If non-NULL, points to the view that opened this view. If this view
1198 * is closed tig will switch back to the parent view. */
1199 struct view *parent;
1202 unsigned long lines; /* Total number of lines */
1203 struct line *line; /* Line index */
1204 unsigned long line_size;/* Total number of allocated lines */
1205 unsigned int digits; /* Number of digits in the lines member. */
1213 /* What type of content being displayed. Used in the title bar. */
1215 /* Draw one line; @lineno must be < view->height. */
1216 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1217 /* Read one line; updates view->line. */
1218 bool (*read)(struct view *view, char *data);
1219 /* Depending on view, change display based on current line. */
1220 bool (*enter)(struct view *view, struct line *line);
1221 /* Search for regex in a line. */
1222 bool (*grep)(struct view *view, struct line *line);
1224 void (*select)(struct view *view, struct line *line);
1227 static struct view_ops pager_ops;
1228 static struct view_ops main_ops;
1229 static struct view_ops tree_ops;
1230 static struct view_ops blob_ops;
1232 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1233 { name, cmd, #env, ref, ops, map}
1235 #define VIEW_(id, name, ops, ref) \
1236 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1239 static struct view views[] = {
1240 VIEW_(MAIN, "main", &main_ops, ref_head),
1241 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1242 VIEW_(LOG, "log", &pager_ops, ref_head),
1243 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1244 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1245 VIEW_(HELP, "help", &pager_ops, "static"),
1246 VIEW_(PAGER, "pager", &pager_ops, "static"),
1249 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1251 #define foreach_view(view, i) \
1252 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1254 #define view_is_displayed(view) \
1255 (view == display[0] || view == display[1])
1258 draw_view_line(struct view *view, unsigned int lineno)
1261 bool selected = (view->offset + lineno == view->lineno);
1263 assert(view_is_displayed(view));
1265 if (view->offset + lineno >= view->lines)
1268 line = &view->line[view->offset + lineno];
1271 view->ops->select(view, line);
1273 return view->ops->draw(view, line, lineno, selected);
1277 redraw_view_from(struct view *view, int lineno)
1279 assert(0 <= lineno && lineno < view->height);
1281 for (; lineno < view->height; lineno++) {
1282 if (!draw_view_line(view, lineno))
1286 redrawwin(view->win);
1287 wrefresh(view->win);
1291 redraw_view(struct view *view)
1294 redraw_view_from(view, 0);
1299 update_view_title(struct view *view)
1301 assert(view_is_displayed(view));
1303 if (view == display[current_view])
1304 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1306 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1308 werase(view->title);
1309 wmove(view->title, 0, 0);
1312 wprintw(view->title, "[%s] %s", view->name, view->ref);
1314 wprintw(view->title, "[%s]", view->name);
1316 if (view->lines || view->pipe) {
1317 unsigned int view_lines = view->offset + view->height;
1318 unsigned int lines = view->lines
1319 ? MIN(view_lines, view->lines) * 100 / view->lines
1322 wprintw(view->title, " - %s %d of %d (%d%%)",
1330 time_t secs = time(NULL) - view->start_time;
1332 /* Three git seconds are a long time ... */
1334 wprintw(view->title, " %lds", secs);
1337 wmove(view->title, 0, view->width - 1);
1338 wrefresh(view->title);
1342 resize_display(void)
1345 struct view *base = display[0];
1346 struct view *view = display[1] ? display[1] : display[0];
1348 /* Setup window dimensions */
1350 getmaxyx(stdscr, base->height, base->width);
1352 /* Make room for the status window. */
1356 /* Horizontal split. */
1357 view->width = base->width;
1358 view->height = SCALE_SPLIT_VIEW(base->height);
1359 base->height -= view->height;
1361 /* Make room for the title bar. */
1365 /* Make room for the title bar. */
1370 foreach_displayed_view (view, i) {
1372 view->win = newwin(view->height, 0, offset, 0);
1374 die("Failed to create %s view", view->name);
1376 scrollok(view->win, TRUE);
1378 view->title = newwin(1, 0, offset + view->height, 0);
1380 die("Failed to create title window");
1383 wresize(view->win, view->height, view->width);
1384 mvwin(view->win, offset, 0);
1385 mvwin(view->title, offset + view->height, 0);
1388 offset += view->height + 1;
1393 redraw_display(void)
1398 foreach_displayed_view (view, i) {
1400 update_view_title(view);
1405 update_display_cursor(void)
1407 struct view *view = display[current_view];
1409 /* Move the cursor to the right-most column of the cursor line.
1411 * XXX: This could turn out to be a bit expensive, but it ensures that
1412 * the cursor does not jump around. */
1414 wmove(view->win, view->lineno - view->offset, view->width - 1);
1415 wrefresh(view->win);
1423 /* Scrolling backend */
1425 do_scroll_view(struct view *view, int lines, bool redraw)
1427 assert(view_is_displayed(view));
1429 /* The rendering expects the new offset. */
1430 view->offset += lines;
1432 assert(0 <= view->offset && view->offset < view->lines);
1435 /* Redraw the whole screen if scrolling is pointless. */
1436 if (view->height < ABS(lines)) {
1440 int line = lines > 0 ? view->height - lines : 0;
1441 int end = line + ABS(lines);
1443 wscrl(view->win, lines);
1445 for (; line < end; line++) {
1446 if (!draw_view_line(view, line))
1451 /* Move current line into the view. */
1452 if (view->lineno < view->offset) {
1453 view->lineno = view->offset;
1454 draw_view_line(view, 0);
1456 } else if (view->lineno >= view->offset + view->height) {
1457 if (view->lineno == view->offset + view->height) {
1458 /* Clear the hidden line so it doesn't show if the view
1459 * is scrolled up. */
1460 wmove(view->win, view->height, 0);
1461 wclrtoeol(view->win);
1463 view->lineno = view->offset + view->height - 1;
1464 draw_view_line(view, view->lineno - view->offset);
1467 assert(view->offset <= view->lineno && view->lineno < view->lines);
1472 redrawwin(view->win);
1473 wrefresh(view->win);
1477 /* Scroll frontend */
1479 scroll_view(struct view *view, enum request request)
1484 case REQ_SCROLL_PAGE_DOWN:
1485 lines = view->height;
1486 case REQ_SCROLL_LINE_DOWN:
1487 if (view->offset + lines > view->lines)
1488 lines = view->lines - view->offset;
1490 if (lines == 0 || view->offset + view->height >= view->lines) {
1491 report("Cannot scroll beyond the last line");
1496 case REQ_SCROLL_PAGE_UP:
1497 lines = view->height;
1498 case REQ_SCROLL_LINE_UP:
1499 if (lines > view->offset)
1500 lines = view->offset;
1503 report("Cannot scroll beyond the first line");
1511 die("request %d not handled in switch", request);
1514 do_scroll_view(view, lines, TRUE);
1519 move_view(struct view *view, enum request request, bool redraw)
1524 case REQ_MOVE_FIRST_LINE:
1525 steps = -view->lineno;
1528 case REQ_MOVE_LAST_LINE:
1529 steps = view->lines - view->lineno - 1;
1532 case REQ_MOVE_PAGE_UP:
1533 steps = view->height > view->lineno
1534 ? -view->lineno : -view->height;
1537 case REQ_MOVE_PAGE_DOWN:
1538 steps = view->lineno + view->height >= view->lines
1539 ? view->lines - view->lineno - 1 : view->height;
1551 die("request %d not handled in switch", request);
1554 if (steps <= 0 && view->lineno == 0) {
1555 report("Cannot move beyond the first line");
1558 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1559 report("Cannot move beyond the last line");
1563 /* Move the current line */
1564 view->lineno += steps;
1565 assert(0 <= view->lineno && view->lineno < view->lines);
1567 /* Repaint the old "current" line if we be scrolling */
1568 if (ABS(steps) < view->height) {
1569 int prev_lineno = view->lineno - steps - view->offset;
1571 wmove(view->win, prev_lineno, 0);
1572 wclrtoeol(view->win);
1573 draw_view_line(view, prev_lineno);
1576 /* Check whether the view needs to be scrolled */
1577 if (view->lineno < view->offset ||
1578 view->lineno >= view->offset + view->height) {
1579 if (steps < 0 && -steps > view->offset) {
1580 steps = -view->offset;
1582 } else if (steps > 0) {
1583 if (view->lineno == view->lines - 1 &&
1584 view->lines > view->height) {
1585 steps = view->lines - view->offset - 1;
1586 if (steps >= view->height)
1587 steps -= view->height - 1;
1591 do_scroll_view(view, steps, redraw);
1595 /* Draw the current line */
1596 draw_view_line(view, view->lineno - view->offset);
1601 redrawwin(view->win);
1602 wrefresh(view->win);
1611 static void search_view(struct view *view, enum request request, const char *search);
1614 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1616 assert(view_is_displayed(view));
1618 if (!view->ops->grep(view, line))
1621 if (lineno - view->offset >= view->height) {
1622 view->offset = lineno;
1623 view->lineno = lineno;
1627 unsigned long old_lineno = view->lineno - view->offset;
1629 view->lineno = lineno;
1631 wmove(view->win, old_lineno, 0);
1632 wclrtoeol(view->win);
1633 draw_view_line(view, old_lineno);
1635 draw_view_line(view, view->lineno - view->offset);
1636 redrawwin(view->win);
1637 wrefresh(view->win);
1640 report("Line %ld matches '%s'", lineno + 1, view->grep);
1645 find_next(struct view *view, enum request request)
1647 unsigned long lineno = view->lineno;
1652 report("No previous search");
1654 search_view(view, request, opt_search);
1664 case REQ_SEARCH_BACK:
1673 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1674 lineno += direction;
1676 /* Note, lineno is unsigned long so will wrap around in which case it
1677 * will become bigger than view->lines. */
1678 for (; lineno < view->lines; lineno += direction) {
1679 struct line *line = &view->line[lineno];
1681 if (find_next_line(view, lineno, line))
1685 report("No match found for '%s'", view->grep);
1689 search_view(struct view *view, enum request request, const char *search)
1694 regfree(view->regex);
1697 view->regex = calloc(1, sizeof(*view->regex));
1702 regex_err = regcomp(view->regex, search, REG_EXTENDED);
1703 if (regex_err != 0) {
1704 char buf[SIZEOF_STR] = "unknown error";
1706 regerror(regex_err, view->regex, buf, sizeof(buf));
1707 report("Search failed: %s", buf);
1711 string_copy(view->grep, search);
1713 find_next(view, request);
1717 * Incremental updating
1721 end_update(struct view *view)
1725 set_nonblocking_input(FALSE);
1726 if (view->pipe == stdin)
1734 begin_update(struct view *view)
1736 const char *id = view->id;
1742 string_copy(view->cmd, opt_cmd);
1744 /* When running random commands, the view ref could have become
1745 * invalid so clear it. */
1748 } else if (view == VIEW(REQ_VIEW_TREE)) {
1749 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1751 if (strcmp(view->vid, view->id))
1754 if (!string_format(view->cmd, format, id, opt_path))
1758 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1760 if (!string_format(view->cmd, format, id, id, id, id, id))
1764 /* Special case for the pager view. */
1766 view->pipe = opt_pipe;
1769 view->pipe = popen(view->cmd, "r");
1775 set_nonblocking_input(TRUE);
1780 string_copy(view->vid, id);
1785 for (i = 0; i < view->lines; i++)
1786 if (view->line[i].data)
1787 free(view->line[i].data);
1793 view->start_time = time(NULL);
1798 static struct line *
1799 realloc_lines(struct view *view, size_t line_size)
1801 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1807 view->line_size = line_size;
1812 update_view(struct view *view)
1814 char in_buffer[BUFSIZ];
1815 char out_buffer[BUFSIZ * 2];
1817 /* The number of lines to read. If too low it will cause too much
1818 * redrawing (and possible flickering), if too high responsiveness
1820 unsigned long lines = view->height;
1821 int redraw_from = -1;
1826 /* Only redraw if lines are visible. */
1827 if (view->offset + view->height >= view->lines)
1828 redraw_from = view->lines - view->offset;
1830 /* FIXME: This is probably not perfect for backgrounded views. */
1831 if (!realloc_lines(view, view->lines + lines))
1834 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1835 size_t linelen = strlen(line);
1838 line[linelen - 1] = 0;
1840 if (opt_iconv != ICONV_NONE) {
1842 size_t inlen = linelen;
1844 char *outbuf = out_buffer;
1845 size_t outlen = sizeof(out_buffer);
1849 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1850 if (ret != (size_t) -1) {
1852 linelen = strlen(out_buffer);
1856 if (!view->ops->read(view, line))
1866 lines = view->lines;
1867 for (digits = 0; lines; digits++)
1870 /* Keep the displayed view in sync with line number scaling. */
1871 if (digits != view->digits) {
1872 view->digits = digits;
1877 if (!view_is_displayed(view))
1880 if (view == VIEW(REQ_VIEW_TREE)) {
1881 /* Clear the view and redraw everything since the tree sorting
1882 * might have rearranged things. */
1885 } else if (redraw_from >= 0) {
1886 /* If this is an incremental update, redraw the previous line
1887 * since for commits some members could have changed when
1888 * loading the main view. */
1889 if (redraw_from > 0)
1892 /* Incrementally draw avoids flickering. */
1893 redraw_view_from(view, redraw_from);
1896 /* Update the title _after_ the redraw so that if the redraw picks up a
1897 * commit reference in view->ref it'll be available here. */
1898 update_view_title(view);
1901 if (ferror(view->pipe)) {
1902 report("Failed to read: %s", strerror(errno));
1905 } else if (feof(view->pipe)) {
1913 report("Allocation failure");
1925 static void open_help_view(struct view *view)
1928 int lines = ARRAY_SIZE(req_info) + 2;
1931 if (view->lines > 0)
1934 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1935 if (!req_info[i].request)
1938 view->line = calloc(lines, sizeof(*view->line));
1940 report("Allocation failure");
1944 view->ops->read(view, "Quick reference for tig keybindings:");
1946 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1949 if (!req_info[i].request) {
1950 view->ops->read(view, "");
1951 view->ops->read(view, req_info[i].help);
1955 key = get_key(req_info[i].request);
1956 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1959 view->ops->read(view, buf);
1964 OPEN_DEFAULT = 0, /* Use default view switching. */
1965 OPEN_SPLIT = 1, /* Split current view. */
1966 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1967 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1971 open_view(struct view *prev, enum request request, enum open_flags flags)
1973 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1974 bool split = !!(flags & OPEN_SPLIT);
1975 bool reload = !!(flags & OPEN_RELOAD);
1976 struct view *view = VIEW(request);
1977 int nviews = displayed_views();
1978 struct view *base_view = display[0];
1980 if (view == prev && nviews == 1 && !reload) {
1981 report("Already in %s view", view->name);
1985 if (view == VIEW(REQ_VIEW_HELP)) {
1986 open_help_view(view);
1988 } else if ((reload || strcmp(view->vid, view->id)) &&
1989 !begin_update(view)) {
1990 report("Failed to load %s view", view->name);
1999 /* Maximize the current view. */
2000 memset(display, 0, sizeof(display));
2002 display[current_view] = view;
2005 /* Resize the view when switching between split- and full-screen,
2006 * or when switching between two different full-screen views. */
2007 if (nviews != displayed_views() ||
2008 (nviews == 1 && base_view != display[0]))
2011 if (split && prev->lineno - prev->offset >= prev->height) {
2012 /* Take the title line into account. */
2013 int lines = prev->lineno - prev->offset - prev->height + 1;
2015 /* Scroll the view that was split if the current line is
2016 * outside the new limited view. */
2017 do_scroll_view(prev, lines, TRUE);
2020 if (prev && view != prev) {
2021 if (split && !backgrounded) {
2022 /* "Blur" the previous view. */
2023 update_view_title(prev);
2026 view->parent = prev;
2029 if (view->pipe && view->lines == 0) {
2030 /* Clear the old view and let the incremental updating refill
2039 /* If the view is backgrounded the above calls to report()
2040 * won't redraw the view title. */
2042 update_view_title(view);
2047 * User request switch noodle
2051 view_driver(struct view *view, enum request request)
2058 case REQ_MOVE_PAGE_UP:
2059 case REQ_MOVE_PAGE_DOWN:
2060 case REQ_MOVE_FIRST_LINE:
2061 case REQ_MOVE_LAST_LINE:
2062 move_view(view, request, TRUE);
2065 case REQ_SCROLL_LINE_DOWN:
2066 case REQ_SCROLL_LINE_UP:
2067 case REQ_SCROLL_PAGE_DOWN:
2068 case REQ_SCROLL_PAGE_UP:
2069 scroll_view(view, request);
2074 report("No file chosen, press 't' to open tree view");
2083 case REQ_VIEW_PAGER:
2084 open_view(view, request, OPEN_DEFAULT);
2089 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2091 if ((view == VIEW(REQ_VIEW_DIFF) &&
2092 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2093 (view == VIEW(REQ_VIEW_BLOB) &&
2094 view->parent == VIEW(REQ_VIEW_TREE))) {
2095 bool redraw = display[1] == view;
2097 view = view->parent;
2098 move_view(view, request, redraw);
2100 update_view_title(view);
2102 move_view(view, request, TRUE);
2109 report("Nothing to enter");
2112 return view->ops->enter(view, &view->line[view->lineno]);
2116 int nviews = displayed_views();
2117 int next_view = (current_view + 1) % nviews;
2119 if (next_view == current_view) {
2120 report("Only one view is displayed");
2124 current_view = next_view;
2125 /* Blur out the title of the previous view. */
2126 update_view_title(view);
2130 case REQ_TOGGLE_LINENO:
2131 opt_line_number = !opt_line_number;
2135 case REQ_TOGGLE_REV_GRAPH:
2136 opt_rev_graph = !opt_rev_graph;
2141 /* Always reload^Wrerun commands from the prompt. */
2142 open_view(view, opt_request, OPEN_RELOAD);
2146 case REQ_SEARCH_BACK:
2147 search_view(view, request, opt_search);
2152 find_next(view, request);
2155 case REQ_STOP_LOADING:
2156 for (i = 0; i < ARRAY_SIZE(views); i++) {
2159 report("Stopped loading the %s view", view->name),
2164 case REQ_SHOW_VERSION:
2165 report("%s (built %s)", VERSION, __DATE__);
2168 case REQ_SCREEN_RESIZE:
2171 case REQ_SCREEN_REDRAW:
2179 case REQ_VIEW_CLOSE:
2180 /* XXX: Mark closed views by letting view->parent point to the
2181 * view itself. Parents to closed view should never be
2184 view->parent->parent != view->parent) {
2185 memset(display, 0, sizeof(display));
2187 display[current_view] = view->parent;
2188 view->parent = view;
2198 /* An unknown key will show most commonly used commands. */
2199 report("Unknown key, press 'h' for help");
2212 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2214 char *text = line->data;
2215 enum line_type type = line->type;
2216 int textlen = strlen(text);
2219 wmove(view->win, lineno, 0);
2223 wchgat(view->win, -1, 0, type, NULL);
2226 attr = get_line_attr(type);
2227 wattrset(view->win, attr);
2229 if (opt_line_number || opt_tab_size < TABSIZE) {
2230 static char spaces[] = " ";
2231 int col_offset = 0, col = 0;
2233 if (opt_line_number) {
2234 unsigned long real_lineno = view->offset + lineno + 1;
2236 if (real_lineno == 1 ||
2237 (real_lineno % opt_num_interval) == 0) {
2238 wprintw(view->win, "%.*d", view->digits, real_lineno);
2241 waddnstr(view->win, spaces,
2242 MIN(view->digits, STRING_SIZE(spaces)));
2244 waddstr(view->win, ": ");
2245 col_offset = view->digits + 2;
2248 while (text && col_offset + col < view->width) {
2249 int cols_max = view->width - col_offset - col;
2253 if (*text == '\t') {
2255 assert(sizeof(spaces) > TABSIZE);
2257 cols = opt_tab_size - (col % opt_tab_size);
2260 text = strchr(text, '\t');
2261 cols = line ? text - pos : strlen(pos);
2264 waddnstr(view->win, pos, MIN(cols, cols_max));
2269 int col = 0, pos = 0;
2271 for (; pos < textlen && col < view->width; pos++, col++)
2272 if (text[pos] == '\t')
2273 col += TABSIZE - (col % TABSIZE) - 1;
2275 waddnstr(view->win, text, pos);
2282 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2284 char refbuf[SIZEOF_STR];
2288 if (!string_format(refbuf, "git describe %s", commit_id))
2291 pipe = popen(refbuf, "r");
2295 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2296 ref = chomp_string(ref);
2302 /* This is the only fatal call, since it can "corrupt" the buffer. */
2303 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2310 add_pager_refs(struct view *view, struct line *line)
2312 char buf[SIZEOF_STR];
2313 char *commit_id = line->data + STRING_SIZE("commit ");
2315 size_t bufpos = 0, refpos = 0;
2316 const char *sep = "Refs: ";
2317 bool is_tag = FALSE;
2319 assert(line->type == LINE_COMMIT);
2321 refs = get_refs(commit_id);
2323 if (view == VIEW(REQ_VIEW_DIFF))
2324 goto try_add_describe_ref;
2329 struct ref *ref = refs[refpos];
2330 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2332 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2337 } while (refs[refpos++]->next);
2339 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2340 try_add_describe_ref:
2341 /* Add <tag>-g<commit_id> "fake" reference. */
2342 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2349 if (!realloc_lines(view, view->line_size + 1))
2352 line = &view->line[view->lines];
2353 line->data = strdup(buf);
2357 line->type = LINE_PP_REFS;
2362 pager_read(struct view *view, char *data)
2364 struct line *line = &view->line[view->lines];
2366 line->data = strdup(data);
2370 line->type = get_line_type(line->data);
2373 if (line->type == LINE_COMMIT &&
2374 (view == VIEW(REQ_VIEW_DIFF) ||
2375 view == VIEW(REQ_VIEW_LOG)))
2376 add_pager_refs(view, line);
2382 pager_enter(struct view *view, struct line *line)
2386 if (line->type == LINE_COMMIT &&
2387 (view == VIEW(REQ_VIEW_LOG) ||
2388 view == VIEW(REQ_VIEW_PAGER))) {
2389 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2393 /* Always scroll the view even if it was split. That way
2394 * you can use Enter to scroll through the log view and
2395 * split open each commit diff. */
2396 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2398 /* FIXME: A minor workaround. Scrolling the view will call report("")
2399 * but if we are scrolling a non-current view this won't properly
2400 * update the view title. */
2402 update_view_title(view);
2408 pager_grep(struct view *view, struct line *line)
2411 char *text = line->data;
2416 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2423 pager_select(struct view *view, struct line *line)
2425 if (line->type == LINE_COMMIT) {
2426 char *text = line->data;
2428 string_copy(view->ref, text + STRING_SIZE("commit "));
2429 string_copy(ref_commit, view->ref);
2433 static struct view_ops pager_ops = {
2447 /* Parse output from git ls-tree:
2449 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2450 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2451 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2452 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2455 #define SIZEOF_TREE_ATTR \
2456 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2458 #define TREE_UP_FORMAT "040000 tree %s\t.."
2461 tree_compare_entry(enum line_type type1, char *name1,
2462 enum line_type type2, char *name2)
2464 if (type1 != type2) {
2465 if (type1 == LINE_TREE_DIR)
2470 return strcmp(name1, name2);
2474 tree_read(struct view *view, char *text)
2476 size_t textlen = strlen(text);
2477 char buf[SIZEOF_STR];
2479 enum line_type type;
2480 bool first_read = view->lines == 0;
2482 if (textlen <= SIZEOF_TREE_ATTR)
2485 type = text[STRING_SIZE("100644 ")] == 't'
2486 ? LINE_TREE_DIR : LINE_TREE_FILE;
2489 /* Add path info line */
2490 if (string_format(buf, "Directory path /%s", opt_path) &&
2491 realloc_lines(view, view->line_size + 1) &&
2492 pager_read(view, buf))
2493 view->line[view->lines - 1].type = LINE_DEFAULT;
2497 /* Insert "link" to parent directory. */
2499 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2500 realloc_lines(view, view->line_size + 1) &&
2501 pager_read(view, buf))
2502 view->line[view->lines - 1].type = LINE_TREE_DIR;
2507 /* Strip the path part ... */
2509 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2510 size_t striplen = strlen(opt_path);
2511 char *path = text + SIZEOF_TREE_ATTR;
2513 if (pathlen > striplen)
2514 memmove(path, path + striplen,
2515 pathlen - striplen + 1);
2518 /* Skip "Directory ..." and ".." line. */
2519 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2520 struct line *line = &view->line[pos];
2521 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2522 char *path2 = text + SIZEOF_TREE_ATTR;
2523 int cmp = tree_compare_entry(line->type, path1, type, path2);
2528 text = strdup(text);
2532 if (view->lines > pos)
2533 memmove(&view->line[pos + 1], &view->line[pos],
2534 (view->lines - pos) * sizeof(*line));
2536 line = &view->line[pos];
2543 if (!pager_read(view, text))
2546 /* Move the current line to the first tree entry. */
2550 view->line[view->lines - 1].type = type;
2555 tree_enter(struct view *view, struct line *line)
2557 enum open_flags flags = OPEN_DEFAULT;
2558 char *data = line->data;
2559 enum request request;
2561 switch (line->type) {
2563 /* Depending on whether it is a subdir or parent (updir?) link
2564 * mangle the path buffer. */
2565 if (line == &view->line[1] && *opt_path) {
2566 size_t path_len = strlen(opt_path);
2567 char *dirsep = opt_path + path_len - 1;
2569 while (dirsep > opt_path && dirsep[-1] != '/')
2575 size_t pathlen = strlen(opt_path);
2576 size_t origlen = pathlen;
2577 char *basename = data + SIZEOF_TREE_ATTR;
2579 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2580 opt_path[origlen] = 0;
2585 /* Trees and subtrees share the same ID, so they are not not
2586 * unique like blobs. */
2587 flags |= OPEN_RELOAD;
2588 request = REQ_VIEW_TREE;
2591 case LINE_TREE_FILE:
2592 /* This causes the blob view to become split, and not having it
2593 * in the tree dir case will make the blob view automatically
2594 * disappear when moving to a different directory. */
2595 flags |= OPEN_SPLIT;
2596 request = REQ_VIEW_BLOB;
2603 open_view(view, request, flags);
2605 if (!VIEW(request)->pipe)
2608 /* For tree views insert the path to the parent as the first line. */
2609 if (request == REQ_VIEW_BLOB) {
2610 /* Mirror what is showed in the title bar. */
2611 string_ncopy(ref_blob, data + STRING_SIZE("100644 blob "), 40);
2612 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2620 tree_select(struct view *view, struct line *line)
2622 if (line->type == LINE_TREE_DIR || line->type == LINE_TREE_FILE) {
2623 char *text = line->data;
2625 string_ncopy(view->ref, text + STRING_SIZE("100644 blob "), 40);
2626 string_copy(ref_blob, view->ref);
2630 static struct view_ops tree_ops = {
2640 blob_read(struct view *view, char *line)
2642 bool state = pager_read(view, line);
2645 view->line[view->lines - 1].type = LINE_DEFAULT;
2650 static struct view_ops blob_ops = {
2665 char id[41]; /* SHA1 ID. */
2666 char title[75]; /* First line of the commit message. */
2667 char author[75]; /* Author of the commit. */
2668 struct tm time; /* Date from the author ident. */
2669 struct ref **refs; /* Repository references. */
2670 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2671 size_t graph_size; /* The width of the graph array. */
2675 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2677 char buf[DATE_COLS + 1];
2678 struct commit *commit = line->data;
2679 enum line_type type;
2685 if (!*commit->author)
2688 wmove(view->win, lineno, col);
2692 wattrset(view->win, get_line_attr(type));
2693 wchgat(view->win, -1, 0, type, NULL);
2696 type = LINE_MAIN_COMMIT;
2697 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2700 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2701 waddnstr(view->win, buf, timelen);
2702 waddstr(view->win, " ");
2705 wmove(view->win, lineno, col);
2706 if (type != LINE_CURSOR)
2707 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2710 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2712 authorlen = strlen(commit->author);
2713 if (authorlen > AUTHOR_COLS - 2) {
2714 authorlen = AUTHOR_COLS - 2;
2720 waddnstr(view->win, commit->author, authorlen);
2721 if (type != LINE_CURSOR)
2722 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2723 waddch(view->win, '~');
2725 waddstr(view->win, commit->author);
2729 if (type != LINE_CURSOR)
2730 wattrset(view->win, A_NORMAL);
2732 if (opt_rev_graph && commit->graph_size) {
2735 wmove(view->win, lineno, col);
2736 /* Using waddch() instead of waddnstr() ensures that
2737 * they'll be rendered correctly for the cursor line. */
2738 for (i = 0; i < commit->graph_size; i++)
2739 waddch(view->win, commit->graph[i]);
2741 col += commit->graph_size + 1;
2744 wmove(view->win, lineno, col);
2750 if (type == LINE_CURSOR)
2752 else if (commit->refs[i]->tag)
2753 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2755 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2756 waddstr(view->win, "[");
2757 waddstr(view->win, commit->refs[i]->name);
2758 waddstr(view->win, "]");
2759 if (type != LINE_CURSOR)
2760 wattrset(view->win, A_NORMAL);
2761 waddstr(view->win, " ");
2762 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2763 } while (commit->refs[i++]->next);
2766 if (type != LINE_CURSOR)
2767 wattrset(view->win, get_line_attr(type));
2770 int titlelen = strlen(commit->title);
2772 if (col + titlelen > view->width)
2773 titlelen = view->width - col;
2775 waddnstr(view->win, commit->title, titlelen);
2781 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2783 main_read(struct view *view, char *line)
2785 enum line_type type = get_line_type(line);
2786 struct commit *commit = view->lines
2787 ? view->line[view->lines - 1].data : NULL;
2791 commit = calloc(1, sizeof(struct commit));
2795 line += STRING_SIZE("commit ");
2797 view->line[view->lines++].data = commit;
2798 string_copy(commit->id, line);
2799 commit->refs = get_refs(commit->id);
2800 commit->graph[commit->graph_size++] = ACS_LTEE;
2805 char *ident = line + STRING_SIZE("author ");
2806 char *end = strchr(ident, '<');
2812 char *email = end + 1;
2814 for (; end > ident && isspace(end[-1]); end--) ;
2816 if (end == ident && *email) {
2818 end = strchr(ident, '>');
2819 for (; end > ident && isspace(end[-1]); end--) ;
2824 /* End is NULL or ident meaning there's no author. */
2828 string_copy(commit->author, ident);
2830 /* Parse epoch and timezone */
2832 char *secs = strchr(end + 1, '>');
2836 if (!secs || secs[1] != ' ')
2840 time = (time_t) atol(secs);
2841 zone = strchr(secs, ' ');
2842 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2846 tz = ('0' - zone[1]) * 60 * 60 * 10;
2847 tz += ('0' - zone[2]) * 60 * 60;
2848 tz += ('0' - zone[3]) * 60;
2849 tz += ('0' - zone[4]) * 60;
2856 gmtime_r(&time, &commit->time);
2864 /* Fill in the commit title if it has not already been set. */
2865 if (commit->title[0])
2868 /* Require titles to start with a non-space character at the
2869 * offset used by git log. */
2870 /* FIXME: More gracefull handling of titles; append "..." to
2871 * shortened titles, etc. */
2872 if (strncmp(line, " ", 4) ||
2876 string_copy(commit->title, line + 4);
2883 main_enter(struct view *view, struct line *line)
2885 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2887 open_view(view, REQ_VIEW_DIFF, flags);
2892 main_grep(struct view *view, struct line *line)
2894 struct commit *commit = line->data;
2895 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2896 char buf[DATE_COLS + 1];
2899 for (state = S_TITLE; state < S_END; state++) {
2903 case S_TITLE: text = commit->title; break;
2904 case S_AUTHOR: text = commit->author; break;
2906 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2915 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2923 main_select(struct view *view, struct line *line)
2925 struct commit *commit = line->data;
2927 string_copy(view->ref, commit->id);
2928 string_copy(ref_commit, view->ref);
2931 static struct view_ops main_ops = {
2942 * Unicode / UTF-8 handling
2944 * NOTE: Much of the following code for dealing with unicode is derived from
2945 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2946 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2949 /* I've (over)annotated a lot of code snippets because I am not entirely
2950 * confident that the approach taken by this small UTF-8 interface is correct.
2954 unicode_width(unsigned long c)
2957 (c <= 0x115f /* Hangul Jamo */
2960 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2962 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2963 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2964 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2965 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2966 || (c >= 0xffe0 && c <= 0xffe6)
2967 || (c >= 0x20000 && c <= 0x2fffd)
2968 || (c >= 0x30000 && c <= 0x3fffd)))
2974 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2975 * Illegal bytes are set one. */
2976 static const unsigned char utf8_bytes[256] = {
2977 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,
2978 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,
2979 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,
2980 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,
2981 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,
2982 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,
2983 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,
2984 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,
2987 /* Decode UTF-8 multi-byte representation into a unicode character. */
2988 static inline unsigned long
2989 utf8_to_unicode(const char *string, size_t length)
2991 unsigned long unicode;
2995 unicode = string[0];
2998 unicode = (string[0] & 0x1f) << 6;
2999 unicode += (string[1] & 0x3f);
3002 unicode = (string[0] & 0x0f) << 12;
3003 unicode += ((string[1] & 0x3f) << 6);
3004 unicode += (string[2] & 0x3f);
3007 unicode = (string[0] & 0x0f) << 18;
3008 unicode += ((string[1] & 0x3f) << 12);
3009 unicode += ((string[2] & 0x3f) << 6);
3010 unicode += (string[3] & 0x3f);
3013 unicode = (string[0] & 0x0f) << 24;
3014 unicode += ((string[1] & 0x3f) << 18);
3015 unicode += ((string[2] & 0x3f) << 12);
3016 unicode += ((string[3] & 0x3f) << 6);
3017 unicode += (string[4] & 0x3f);
3020 unicode = (string[0] & 0x01) << 30;
3021 unicode += ((string[1] & 0x3f) << 24);
3022 unicode += ((string[2] & 0x3f) << 18);
3023 unicode += ((string[3] & 0x3f) << 12);
3024 unicode += ((string[4] & 0x3f) << 6);
3025 unicode += (string[5] & 0x3f);
3028 die("Invalid unicode length");
3031 /* Invalid characters could return the special 0xfffd value but NUL
3032 * should be just as good. */
3033 return unicode > 0xffff ? 0 : unicode;
3036 /* Calculates how much of string can be shown within the given maximum width
3037 * and sets trimmed parameter to non-zero value if all of string could not be
3040 * Additionally, adds to coloffset how many many columns to move to align with
3041 * the expected position. Takes into account how multi-byte and double-width
3042 * characters will effect the cursor position.
3044 * Returns the number of bytes to output from string to satisfy max_width. */
3046 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3048 const char *start = string;
3049 const char *end = strchr(string, '\0');
3055 while (string < end) {
3056 int c = *(unsigned char *) string;
3057 unsigned char bytes = utf8_bytes[c];
3059 unsigned long unicode;
3061 if (string + bytes > end)
3064 /* Change representation to figure out whether
3065 * it is a single- or double-width character. */
3067 unicode = utf8_to_unicode(string, bytes);
3068 /* FIXME: Graceful handling of invalid unicode character. */
3072 ucwidth = unicode_width(unicode);
3074 if (width > max_width) {
3079 /* The column offset collects the differences between the
3080 * number of bytes encoding a character and the number of
3081 * columns will be used for rendering said character.
3083 * So if some character A is encoded in 2 bytes, but will be
3084 * represented on the screen using only 1 byte this will and up
3085 * adding 1 to the multi-byte column offset.
3087 * Assumes that no double-width character can be encoding in
3088 * less than two bytes. */
3089 if (bytes > ucwidth)
3090 mbwidth += bytes - ucwidth;
3095 *coloffset += mbwidth;
3097 return string - start;
3105 /* Whether or not the curses interface has been initialized. */
3106 static bool cursed = FALSE;
3108 /* The status window is used for polling keystrokes. */
3109 static WINDOW *status_win;
3111 /* Update status and title window. */
3113 report(const char *msg, ...)
3115 static bool empty = TRUE;
3116 struct view *view = display[current_view];
3118 if (!empty || *msg) {
3121 va_start(args, msg);
3124 wmove(status_win, 0, 0);
3126 vwprintw(status_win, msg, args);
3131 wrefresh(status_win);
3136 update_view_title(view);
3137 update_display_cursor();
3140 /* Controls when nodelay should be in effect when polling user input. */
3142 set_nonblocking_input(bool loading)
3144 static unsigned int loading_views;
3146 if ((loading == FALSE && loading_views-- == 1) ||
3147 (loading == TRUE && loading_views++ == 0))
3148 nodelay(status_win, loading);
3156 /* Initialize the curses library */
3157 if (isatty(STDIN_FILENO)) {
3158 cursed = !!initscr();
3160 /* Leave stdin and stdout alone when acting as a pager. */
3161 FILE *io = fopen("/dev/tty", "r+");
3164 die("Failed to open /dev/tty");
3165 cursed = !!newterm(NULL, io, io);
3169 die("Failed to initialize curses");
3171 nonl(); /* Tell curses not to do NL->CR/NL on output */
3172 cbreak(); /* Take input chars one at a time, no wait for \n */
3173 noecho(); /* Don't echo input */
3174 leaveok(stdscr, TRUE);
3179 getmaxyx(stdscr, y, x);
3180 status_win = newwin(1, 0, y - 1, 0);
3182 die("Failed to create status window");
3184 /* Enable keyboard mapping */
3185 keypad(status_win, TRUE);
3186 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3190 read_prompt(const char *prompt)
3192 enum { READING, STOP, CANCEL } status = READING;
3193 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3196 while (status == READING) {
3200 foreach_view (view, i)
3203 report("%s%.*s", prompt, pos, buf);
3204 /* Refresh, accept single keystroke of input */
3205 key = wgetch(status_win);
3210 status = pos ? STOP : CANCEL;
3228 if (pos >= sizeof(buf)) {
3229 report("Input string too long");
3234 buf[pos++] = (char) key;
3238 if (status == CANCEL) {
3239 /* Clear the status window */
3250 * Repository references
3253 static struct ref *refs;
3254 static size_t refs_size;
3256 /* Id <-> ref store */
3257 static struct ref ***id_refs;
3258 static size_t id_refs_size;
3260 static struct ref **
3263 struct ref ***tmp_id_refs;
3264 struct ref **ref_list = NULL;
3265 size_t ref_list_size = 0;
3268 for (i = 0; i < id_refs_size; i++)
3269 if (!strcmp(id, id_refs[i][0]->id))
3272 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3276 id_refs = tmp_id_refs;
3278 for (i = 0; i < refs_size; i++) {
3281 if (strcmp(id, refs[i].id))
3284 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3292 if (ref_list_size > 0)
3293 ref_list[ref_list_size - 1]->next = 1;
3294 ref_list[ref_list_size] = &refs[i];
3296 /* XXX: The properties of the commit chains ensures that we can
3297 * safely modify the shared ref. The repo references will
3298 * always be similar for the same id. */
3299 ref_list[ref_list_size]->next = 0;
3304 id_refs[id_refs_size++] = ref_list;
3310 read_ref(char *id, int idlen, char *name, int namelen)
3315 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3316 /* Commits referenced by tags has "^{}" appended. */
3317 if (name[namelen - 1] != '}')
3320 while (namelen > 0 && name[namelen] != '^')
3324 namelen -= STRING_SIZE("refs/tags/");
3325 name += STRING_SIZE("refs/tags/");
3327 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3328 namelen -= STRING_SIZE("refs/heads/");
3329 name += STRING_SIZE("refs/heads/");
3331 } else if (!strcmp(name, "HEAD")) {
3335 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3339 ref = &refs[refs_size++];
3340 ref->name = malloc(namelen + 1);
3344 strncpy(ref->name, name, namelen);
3345 ref->name[namelen] = 0;
3347 string_copy(ref->id, id);
3355 const char *cmd_env = getenv("TIG_LS_REMOTE");
3356 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3358 return read_properties(popen(cmd, "r"), "\t", read_ref);
3362 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3364 if (!strcmp(name, "i18n.commitencoding"))
3365 string_copy(opt_encoding, value);
3371 load_repo_config(void)
3373 return read_properties(popen("git repo-config --list", "r"),
3374 "=", read_repo_config_option);
3378 read_properties(FILE *pipe, const char *separators,
3379 int (*read_property)(char *, int, char *, int))
3381 char buffer[BUFSIZ];
3388 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3393 name = chomp_string(name);
3394 namelen = strcspn(name, separators);
3396 if (name[namelen]) {
3398 value = chomp_string(name + namelen + 1);
3399 valuelen = strlen(value);
3406 state = read_property(name, namelen, value, valuelen);
3409 if (state != ERR && ferror(pipe))
3422 static void __NORETURN
3425 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3431 static void __NORETURN
3432 die(const char *err, ...)
3438 va_start(args, err);
3439 fputs("tig: ", stderr);
3440 vfprintf(stderr, err, args);
3441 fputs("\n", stderr);
3448 main(int argc, char *argv[])
3451 enum request request;
3454 signal(SIGINT, quit);
3456 if (setlocale(LC_ALL, "")) {
3457 string_copy(opt_codeset, nl_langinfo(CODESET));
3460 if (load_options() == ERR)
3461 die("Failed to load user config.");
3463 /* Load the repo config file so options can be overwritten from
3464 * the command line. */
3465 if (load_repo_config() == ERR)
3466 die("Failed to load repo config.");
3468 if (!parse_options(argc, argv))
3471 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3472 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3473 if (opt_iconv == ICONV_NONE)
3474 die("Failed to initialize character set conversion");
3477 if (load_refs() == ERR)
3478 die("Failed to load refs.");
3480 /* Require a git repository unless when running in pager mode. */
3481 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3482 die("Not a git repository");
3484 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3485 view->cmd_env = getenv(view->cmd_env);
3487 request = opt_request;
3491 while (view_driver(display[current_view], request)) {
3495 foreach_view (view, i)
3498 /* Refresh, accept single keystroke of input */
3499 key = wgetch(status_win);
3501 request = get_keybinding(display[current_view]->keymap, key);
3503 /* Some low-level request handling. This keeps access to
3504 * status_win restricted. */
3508 char *cmd = read_prompt(":");
3510 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3511 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3512 opt_request = REQ_VIEW_DIFF;
3514 opt_request = REQ_VIEW_PAGER;
3523 case REQ_SEARCH_BACK:
3525 const char *prompt = request == REQ_SEARCH
3527 char *search = read_prompt(prompt);
3530 string_copy(opt_search, search);
3535 case REQ_SCREEN_RESIZE:
3539 getmaxyx(stdscr, height, width);
3541 /* Resize the status view and let the view driver take
3542 * care of resizing the displayed views. */
3543 wresize(status_win, 1, width);
3544 mvwin(status_win, height - 1, 0);
3545 wrefresh(status_win);