1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #define VERSION "tig-0.4.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
63 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
65 /* This color name can be used to refer to the default term colors. */
66 #define COLOR_DEFAULT (-1)
68 #define ICONV_NONE ((iconv_t) -1)
70 /* The format and size of the date column in the main view. */
71 #define DATE_FORMAT "%Y-%m-%d %H:%M"
72 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
74 #define AUTHOR_COLS 20
76 /* The default interval between line numbers. */
77 #define NUMBER_INTERVAL 1
81 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
83 #define TIG_LS_REMOTE \
84 "git ls-remote . 2>/dev/null"
86 #define TIG_DIFF_CMD \
87 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
90 "git log --cc --stat -n100 %s 2>/dev/null"
92 #define TIG_MAIN_CMD \
93 "git log --topo-order --pretty=raw %s 2>/dev/null"
95 #define TIG_TREE_CMD \
98 #define TIG_BLOB_CMD \
99 "git cat-file blob %s"
101 /* XXX: Needs to be defined to the empty string. */
102 #define TIG_HELP_CMD ""
103 #define TIG_PAGER_CMD ""
105 /* Some ascii-shorthands fitted into the ncurses namespace. */
107 #define KEY_RETURN '\r'
112 char *name; /* Ref name; tag or head names are shortened. */
113 char id[SIZEOF_REV]; /* Commit SHA1 ID */
114 unsigned int tag:1; /* Is it a tag? */
115 unsigned int next:1; /* For ref lists: are there more refs? */
118 static struct ref **get_refs(char *id);
127 set_from_int_map(struct int_map *map, size_t map_size,
128 int *value, const char *name, int namelen)
133 for (i = 0; i < map_size; i++)
134 if (namelen == map[i].namelen &&
135 !strncasecmp(name, map[i].name, namelen)) {
136 *value = map[i].value;
149 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
151 if (srclen > dstlen - 1)
154 strncpy(dst, src, srclen);
158 /* Shorthands for safely copying into a fixed buffer. */
160 #define string_copy(dst, src) \
161 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
163 #define string_ncopy(dst, src, srclen) \
164 string_ncopy_do(dst, sizeof(dst), src, srclen)
167 chomp_string(char *name)
171 while (isspace(*name))
174 namelen = strlen(name) - 1;
175 while (namelen > 0 && isspace(name[namelen]))
182 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
185 size_t pos = bufpos ? *bufpos : 0;
188 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
194 return pos >= bufsize ? FALSE : TRUE;
197 #define string_format(buf, fmt, args...) \
198 string_nformat(buf, sizeof(buf), NULL, fmt, args)
200 #define string_format_from(buf, from, fmt, args...) \
201 string_nformat(buf, sizeof(buf), from, fmt, args)
204 string_enum_compare(const char *str1, const char *str2, int len)
208 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
210 /* Diff-Header == DIFF_HEADER */
211 for (i = 0; i < len; i++) {
212 if (toupper(str1[i]) == toupper(str2[i]))
215 if (string_enum_sep(str1[i]) &&
216 string_enum_sep(str2[i]))
219 return str1[i] - str2[i];
227 * NOTE: The following is a slightly modified copy of the git project's shell
228 * quoting routines found in the quote.c file.
230 * Help to copy the thing properly quoted for the shell safety. any single
231 * quote is replaced with '\'', any exclamation point is replaced with '\!',
232 * and the whole thing is enclosed in a
235 * original sq_quote result
236 * name ==> name ==> 'name'
237 * a b ==> a b ==> 'a b'
238 * a'b ==> a'\''b ==> 'a'\''b'
239 * a!b ==> a'\!'b ==> 'a'\!'b'
243 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
247 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
250 while ((c = *src++)) {
251 if (c == '\'' || c == '!') {
271 /* XXX: Keep the view request first and in sync with views[]. */ \
272 REQ_GROUP("View switching") \
273 REQ_(VIEW_MAIN, "Show main view"), \
274 REQ_(VIEW_DIFF, "Show diff view"), \
275 REQ_(VIEW_LOG, "Show log view"), \
276 REQ_(VIEW_TREE, "Show tree view"), \
277 REQ_(VIEW_BLOB, "Show blob view"), \
278 REQ_(VIEW_HELP, "Show help page"), \
279 REQ_(VIEW_PAGER, "Show pager view"), \
281 REQ_GROUP("View manipulation") \
282 REQ_(ENTER, "Enter current line and scroll"), \
283 REQ_(NEXT, "Move to next"), \
284 REQ_(PREVIOUS, "Move to previous"), \
285 REQ_(VIEW_NEXT, "Move focus to next view"), \
286 REQ_(VIEW_CLOSE, "Close the current view"), \
287 REQ_(QUIT, "Close all views and quit"), \
289 REQ_GROUP("Cursor navigation") \
290 REQ_(MOVE_UP, "Move cursor one line up"), \
291 REQ_(MOVE_DOWN, "Move cursor one line down"), \
292 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
293 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
294 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
295 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
297 REQ_GROUP("Scrolling") \
298 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
299 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
300 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
301 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
303 REQ_GROUP("Searching") \
304 REQ_(SEARCH, "Search the view"), \
305 REQ_(SEARCH_BACK, "Search backwards in the view"), \
306 REQ_(FIND_NEXT, "Find next search match"), \
307 REQ_(FIND_PREV, "Find previous search match"), \
310 REQ_(NONE, "Do nothing"), \
311 REQ_(PROMPT, "Bring up the prompt"), \
312 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
313 REQ_(SCREEN_RESIZE, "Resize the screen"), \
314 REQ_(SHOW_VERSION, "Show version information"), \
315 REQ_(STOP_LOADING, "Stop all loading views"), \
316 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
317 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
320 /* User action requests. */
322 #define REQ_GROUP(help)
323 #define REQ_(req, help) REQ_##req
325 /* Offset all requests to avoid conflicts with ncurses getch values. */
326 REQ_OFFSET = KEY_MAX + 1,
334 struct request_info {
335 enum request request;
341 static struct request_info req_info[] = {
342 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
343 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
350 get_request(const char *name)
352 int namelen = strlen(name);
355 for (i = 0; i < ARRAY_SIZE(req_info); i++)
356 if (req_info[i].namelen == namelen &&
357 !string_enum_compare(req_info[i].name, name, namelen))
358 return req_info[i].request;
368 static const char usage[] =
369 VERSION " (" __DATE__ ")\n"
371 "Usage: tig [options]\n"
372 " or: tig [options] [--] [git log options]\n"
373 " or: tig [options] log [git log options]\n"
374 " or: tig [options] diff [git diff options]\n"
375 " or: tig [options] show [git show options]\n"
376 " or: tig [options] < [git command output]\n"
379 " -l Start up in log view\n"
380 " -d Start up in diff view\n"
381 " -n[I], --line-number[=I] Show line numbers with given interval\n"
382 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
383 " -- Mark end of tig options\n"
384 " -v, --version Show version and exit\n"
385 " -h, --help Show help message and exit\n";
387 /* Option and state variables. */
388 static bool opt_line_number = FALSE;
389 static bool opt_rev_graph = TRUE;
390 static int opt_num_interval = NUMBER_INTERVAL;
391 static int opt_tab_size = TABSIZE;
392 static enum request opt_request = REQ_VIEW_MAIN;
393 static char opt_cmd[SIZEOF_STR] = "";
394 static char opt_path[SIZEOF_STR] = "";
395 static FILE *opt_pipe = NULL;
396 static char opt_encoding[20] = "UTF-8";
397 static bool opt_utf8 = TRUE;
398 static char opt_codeset[20] = "UTF-8";
399 static iconv_t opt_iconv = ICONV_NONE;
400 static char opt_search[SIZEOF_STR] = "";
408 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
418 int namelen = strlen(name);
422 if (strncmp(opt, name, namelen))
425 if (opt[namelen] == '=')
426 value = opt + namelen + 1;
429 if (!short_name || opt[1] != short_name)
434 va_start(args, type);
435 if (type == OPT_INT) {
436 number = va_arg(args, int *);
438 *number = atoi(value);
445 /* Returns the index of log or diff command or -1 to exit. */
447 parse_options(int argc, char *argv[])
451 for (i = 1; i < argc; i++) {
454 if (!strcmp(opt, "-l")) {
455 opt_request = REQ_VIEW_LOG;
459 if (!strcmp(opt, "-d")) {
460 opt_request = REQ_VIEW_DIFF;
464 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
465 opt_line_number = TRUE;
469 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
470 opt_tab_size = MIN(opt_tab_size, TABSIZE);
474 if (check_option(opt, 'v', "version", OPT_NONE)) {
475 printf("tig version %s\n", VERSION);
479 if (check_option(opt, 'h', "help", OPT_NONE)) {
484 if (!strcmp(opt, "--")) {
489 if (!strcmp(opt, "log") ||
490 !strcmp(opt, "diff") ||
491 !strcmp(opt, "show")) {
492 opt_request = opt[0] == 'l'
493 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
497 if (opt[0] && opt[0] != '-')
500 die("unknown option '%s'\n\n%s", opt, usage);
503 if (!isatty(STDIN_FILENO)) {
504 opt_request = REQ_VIEW_PAGER;
507 } else if (i < argc) {
510 if (opt_request == REQ_VIEW_MAIN)
511 /* XXX: This is vulnerable to the user overriding
512 * options required for the main view parser. */
513 string_copy(opt_cmd, "git log --stat --pretty=raw");
515 string_copy(opt_cmd, "git");
516 buf_size = strlen(opt_cmd);
518 while (buf_size < sizeof(opt_cmd) && i < argc) {
519 opt_cmd[buf_size++] = ' ';
520 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
523 if (buf_size >= sizeof(opt_cmd))
524 die("command too long");
526 opt_cmd[buf_size] = 0;
530 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
538 * Line-oriented content detection.
542 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
543 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
544 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
545 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
546 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
547 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
549 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
550 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
556 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
557 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
558 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
563 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
564 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
566 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
567 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
568 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
570 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
571 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
572 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
574 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
575 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
576 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
577 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
578 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
579 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
580 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
581 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
582 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
585 #define LINE(type, line, fg, bg, attr) \
592 const char *name; /* Option name. */
593 int namelen; /* Size of option name. */
594 const char *line; /* The start of line to match. */
595 int linelen; /* Size of string to match. */
596 int fg, bg, attr; /* Color and text attributes for the lines. */
599 static struct line_info line_info[] = {
600 #define LINE(type, line, fg, bg, attr) \
601 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
606 static enum line_type
607 get_line_type(char *line)
609 int linelen = strlen(line);
612 for (type = 0; type < ARRAY_SIZE(line_info); type++)
613 /* Case insensitive search matches Signed-off-by lines better. */
614 if (linelen >= line_info[type].linelen &&
615 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
622 get_line_attr(enum line_type type)
624 assert(type < ARRAY_SIZE(line_info));
625 return COLOR_PAIR(type) | line_info[type].attr;
628 static struct line_info *
629 get_line_info(char *name, int namelen)
633 for (type = 0; type < ARRAY_SIZE(line_info); type++)
634 if (namelen == line_info[type].namelen &&
635 !string_enum_compare(line_info[type].name, name, namelen))
636 return &line_info[type];
644 int default_bg = COLOR_BLACK;
645 int default_fg = COLOR_WHITE;
650 if (use_default_colors() != ERR) {
655 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
656 struct line_info *info = &line_info[type];
657 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
658 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
660 init_pair(type, fg, bg);
668 unsigned int selected:1;
670 void *data; /* User data */
680 enum request request;
681 struct keybinding *next;
684 static struct keybinding default_keybindings[] = {
686 { 'm', REQ_VIEW_MAIN },
687 { 'd', REQ_VIEW_DIFF },
688 { 'l', REQ_VIEW_LOG },
689 { 't', REQ_VIEW_TREE },
690 { 'f', REQ_VIEW_BLOB },
691 { 'p', REQ_VIEW_PAGER },
692 { 'h', REQ_VIEW_HELP },
694 /* View manipulation */
695 { 'q', REQ_VIEW_CLOSE },
696 { KEY_TAB, REQ_VIEW_NEXT },
697 { KEY_RETURN, REQ_ENTER },
698 { KEY_UP, REQ_PREVIOUS },
699 { KEY_DOWN, REQ_NEXT },
701 /* Cursor navigation */
702 { 'k', REQ_MOVE_UP },
703 { 'j', REQ_MOVE_DOWN },
704 { KEY_HOME, REQ_MOVE_FIRST_LINE },
705 { KEY_END, REQ_MOVE_LAST_LINE },
706 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
707 { ' ', REQ_MOVE_PAGE_DOWN },
708 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
709 { 'b', REQ_MOVE_PAGE_UP },
710 { '-', REQ_MOVE_PAGE_UP },
713 { KEY_IC, REQ_SCROLL_LINE_UP },
714 { KEY_DC, REQ_SCROLL_LINE_DOWN },
715 { 'w', REQ_SCROLL_PAGE_UP },
716 { 's', REQ_SCROLL_PAGE_DOWN },
720 { '?', REQ_SEARCH_BACK },
721 { 'n', REQ_FIND_NEXT },
722 { 'N', REQ_FIND_PREV },
726 { 'z', REQ_STOP_LOADING },
727 { 'v', REQ_SHOW_VERSION },
728 { 'r', REQ_SCREEN_REDRAW },
729 { '.', REQ_TOGGLE_LINENO },
730 { 'g', REQ_TOGGLE_REV_GRAPH },
733 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
736 /* Using the ncurses SIGWINCH handler. */
737 { KEY_RESIZE, REQ_SCREEN_RESIZE },
740 #define KEYMAP_INFO \
751 #define KEYMAP_(name) KEYMAP_##name
756 static struct int_map keymap_table[] = {
757 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
762 #define set_keymap(map, name) \
763 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
765 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
768 add_keybinding(enum keymap keymap, enum request request, int key)
770 struct keybinding *keybinding;
772 keybinding = calloc(1, sizeof(*keybinding));
774 die("Failed to allocate keybinding");
776 keybinding->alias = key;
777 keybinding->request = request;
778 keybinding->next = keybindings[keymap];
779 keybindings[keymap] = keybinding;
782 /* Looks for a key binding first in the given map, then in the generic map, and
783 * lastly in the default keybindings. */
785 get_keybinding(enum keymap keymap, int key)
787 struct keybinding *kbd;
790 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
791 if (kbd->alias == key)
794 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
795 if (kbd->alias == key)
798 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
799 if (default_keybindings[i].alias == key)
800 return default_keybindings[i].request;
802 return (enum request) key;
811 static struct key key_table[] = {
812 { "Enter", KEY_RETURN },
814 { "Backspace", KEY_BACKSPACE },
816 { "Escape", KEY_ESC },
817 { "Left", KEY_LEFT },
818 { "Right", KEY_RIGHT },
820 { "Down", KEY_DOWN },
821 { "Insert", KEY_IC },
822 { "Delete", KEY_DC },
824 { "Home", KEY_HOME },
826 { "PageUp", KEY_PPAGE },
827 { "PageDown", KEY_NPAGE },
837 { "F10", KEY_F(10) },
838 { "F11", KEY_F(11) },
839 { "F12", KEY_F(12) },
843 get_key_value(const char *name)
847 for (i = 0; i < ARRAY_SIZE(key_table); i++)
848 if (!strcasecmp(key_table[i].name, name))
849 return key_table[i].value;
851 if (strlen(name) == 1 && isprint(*name))
858 get_key(enum request request)
860 static char buf[BUFSIZ];
861 static char key_char[] = "'X'";
868 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
869 struct keybinding *keybinding = &default_keybindings[i];
873 if (keybinding->request != request)
876 for (key = 0; key < ARRAY_SIZE(key_table); key++)
877 if (key_table[key].value == keybinding->alias)
878 seq = key_table[key].name;
881 keybinding->alias < 127 &&
882 isprint(keybinding->alias)) {
883 key_char[1] = (char) keybinding->alias;
890 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
891 return "Too many keybindings!";
900 * User config file handling.
903 static struct int_map color_map[] = {
904 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
916 #define set_color(color, name) \
917 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
919 static struct int_map attr_map[] = {
920 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
930 #define set_attribute(attr, name) \
931 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
933 static int config_lineno;
934 static bool config_errors;
935 static char *config_msg;
937 /* Wants: object fgcolor bgcolor [attr] */
939 option_color_command(int argc, char *argv[])
941 struct line_info *info;
943 if (argc != 3 && argc != 4) {
944 config_msg = "Wrong number of arguments given to color command";
948 info = get_line_info(argv[0], strlen(argv[0]));
950 config_msg = "Unknown color name";
954 if (set_color(&info->fg, argv[1]) == ERR ||
955 set_color(&info->bg, argv[2]) == ERR) {
956 config_msg = "Unknown color";
960 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
961 config_msg = "Unknown attribute";
968 /* Wants: name = value */
970 option_set_command(int argc, char *argv[])
973 config_msg = "Wrong number of arguments given to set command";
977 if (strcmp(argv[1], "=")) {
978 config_msg = "No value assigned";
982 if (!strcmp(argv[0], "show-rev-graph")) {
983 opt_rev_graph = (!strcmp(argv[2], "1") ||
984 !strcmp(argv[2], "true") ||
985 !strcmp(argv[2], "yes"));
989 if (!strcmp(argv[0], "line-number-interval")) {
990 opt_num_interval = atoi(argv[2]);
994 if (!strcmp(argv[0], "tab-size")) {
995 opt_tab_size = atoi(argv[2]);
999 if (!strcmp(argv[0], "commit-encoding")) {
1000 char *arg = argv[2];
1001 int delimiter = *arg;
1004 switch (delimiter) {
1007 for (arg++, i = 0; arg[i]; i++)
1008 if (arg[i] == delimiter) {
1013 string_copy(opt_encoding, arg);
1018 config_msg = "Unknown variable name";
1022 /* Wants: mode request key */
1024 option_bind_command(int argc, char *argv[])
1026 enum request request;
1031 config_msg = "Wrong number of arguments given to bind command";
1035 if (set_keymap(&keymap, argv[0]) == ERR) {
1036 config_msg = "Unknown key map";
1040 key = get_key_value(argv[1]);
1042 config_msg = "Unknown key";
1046 request = get_request(argv[2]);
1047 if (request == REQ_UNKNOWN) {
1048 config_msg = "Unknown request name";
1052 add_keybinding(keymap, request, key);
1058 set_option(char *opt, char *value)
1065 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1066 argv[argc++] = value;
1073 while (isspace(*value))
1077 if (!strcmp(opt, "color"))
1078 return option_color_command(argc, argv);
1080 if (!strcmp(opt, "set"))
1081 return option_set_command(argc, argv);
1083 if (!strcmp(opt, "bind"))
1084 return option_bind_command(argc, argv);
1086 config_msg = "Unknown option command";
1091 read_option(char *opt, int optlen, char *value, int valuelen)
1096 config_msg = "Internal error";
1098 /* Check for comment markers, since read_properties() will
1099 * only ensure opt and value are split at first " \t". */
1100 optlen = strcspn(opt, "#");
1104 if (opt[optlen] != 0) {
1105 config_msg = "No option value";
1109 /* Look for comment endings in the value. */
1110 int len = strcspn(value, "#");
1112 if (len < valuelen) {
1114 value[valuelen] = 0;
1117 status = set_option(opt, value);
1120 if (status == ERR) {
1121 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1122 config_lineno, optlen, opt, config_msg);
1123 config_errors = TRUE;
1126 /* Always keep going if errors are encountered. */
1133 char *home = getenv("HOME");
1134 char buf[SIZEOF_STR];
1138 config_errors = FALSE;
1140 if (!home || !string_format(buf, "%s/.tigrc", home))
1143 /* It's ok that the file doesn't exist. */
1144 file = fopen(buf, "r");
1148 if (read_properties(file, " \t", read_option) == ERR ||
1149 config_errors == TRUE)
1150 fprintf(stderr, "Errors while loading %s.\n", buf);
1163 /* The display array of active views and the index of the current view. */
1164 static struct view *display[2];
1165 static unsigned int current_view;
1167 #define foreach_displayed_view(view, i) \
1168 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1170 #define displayed_views() (display[1] != NULL ? 2 : 1)
1172 /* Current head and commit ID */
1173 static char ref_blob[SIZEOF_REF] = "";
1174 static char ref_commit[SIZEOF_REF] = "HEAD";
1175 static char ref_head[SIZEOF_REF] = "HEAD";
1178 const char *name; /* View name */
1179 const char *cmd_fmt; /* Default command line format */
1180 const char *cmd_env; /* Command line set via environment */
1181 const char *id; /* Points to either of ref_{head,commit,blob} */
1183 struct view_ops *ops; /* View operations */
1185 enum keymap keymap; /* What keymap does this view have */
1187 char cmd[SIZEOF_STR]; /* Command buffer */
1188 char ref[SIZEOF_REF]; /* Hovered commit reference */
1189 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1191 int height, width; /* The width and height of the main window */
1192 WINDOW *win; /* The main window */
1193 WINDOW *title; /* The title window living below the main window */
1196 unsigned long offset; /* Offset of the window top */
1197 unsigned long lineno; /* Current line number */
1200 char grep[SIZEOF_STR]; /* Search string */
1201 regex_t *regex; /* Pre-compiled regex */
1203 /* If non-NULL, points to the view that opened this view. If this view
1204 * is closed tig will switch back to the parent view. */
1205 struct view *parent;
1208 unsigned long lines; /* Total number of lines */
1209 struct line *line; /* Line index */
1210 unsigned long line_size;/* Total number of allocated lines */
1211 unsigned int digits; /* Number of digits in the lines member. */
1219 /* What type of content being displayed. Used in the title bar. */
1221 /* Draw one line; @lineno must be < view->height. */
1222 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1223 /* Read one line; updates view->line. */
1224 bool (*read)(struct view *view, char *data);
1225 /* Depending on view, change display based on current line. */
1226 bool (*enter)(struct view *view, struct line *line);
1227 /* Search for regex in a line. */
1228 bool (*grep)(struct view *view, struct line *line);
1230 void (*select)(struct view *view, struct line *line);
1233 static struct view_ops pager_ops;
1234 static struct view_ops main_ops;
1235 static struct view_ops tree_ops;
1236 static struct view_ops blob_ops;
1238 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1239 { name, cmd, #env, ref, ops, map}
1241 #define VIEW_(id, name, ops, ref) \
1242 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1245 static struct view views[] = {
1246 VIEW_(MAIN, "main", &main_ops, ref_head),
1247 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1248 VIEW_(LOG, "log", &pager_ops, ref_head),
1249 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1250 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1251 VIEW_(HELP, "help", &pager_ops, "static"),
1252 VIEW_(PAGER, "pager", &pager_ops, "static"),
1255 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1257 #define foreach_view(view, i) \
1258 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1260 #define view_is_displayed(view) \
1261 (view == display[0] || view == display[1])
1264 draw_view_line(struct view *view, unsigned int lineno)
1267 bool selected = (view->offset + lineno == view->lineno);
1269 assert(view_is_displayed(view));
1271 if (view->offset + lineno >= view->lines)
1274 line = &view->line[view->offset + lineno];
1277 line->selected = TRUE;
1278 view->ops->select(view, line);
1279 } else if (line->selected) {
1280 line->selected = FALSE;
1281 wmove(view->win, lineno, 0);
1282 wclrtoeol(view->win);
1285 return view->ops->draw(view, line, lineno, selected);
1289 redraw_view_from(struct view *view, int lineno)
1291 assert(0 <= lineno && lineno < view->height);
1293 for (; lineno < view->height; lineno++) {
1294 if (!draw_view_line(view, lineno))
1298 redrawwin(view->win);
1299 wrefresh(view->win);
1303 redraw_view(struct view *view)
1306 redraw_view_from(view, 0);
1311 update_view_title(struct view *view)
1313 assert(view_is_displayed(view));
1315 if (view == display[current_view])
1316 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1318 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1320 werase(view->title);
1321 wmove(view->title, 0, 0);
1324 wprintw(view->title, "[%s] %s", view->name, view->ref);
1326 wprintw(view->title, "[%s]", view->name);
1328 if (view->lines || view->pipe) {
1329 unsigned int view_lines = view->offset + view->height;
1330 unsigned int lines = view->lines
1331 ? MIN(view_lines, view->lines) * 100 / view->lines
1334 wprintw(view->title, " - %s %d of %d (%d%%)",
1342 time_t secs = time(NULL) - view->start_time;
1344 /* Three git seconds are a long time ... */
1346 wprintw(view->title, " %lds", secs);
1349 wmove(view->title, 0, view->width - 1);
1350 wrefresh(view->title);
1354 resize_display(void)
1357 struct view *base = display[0];
1358 struct view *view = display[1] ? display[1] : display[0];
1360 /* Setup window dimensions */
1362 getmaxyx(stdscr, base->height, base->width);
1364 /* Make room for the status window. */
1368 /* Horizontal split. */
1369 view->width = base->width;
1370 view->height = SCALE_SPLIT_VIEW(base->height);
1371 base->height -= view->height;
1373 /* Make room for the title bar. */
1377 /* Make room for the title bar. */
1382 foreach_displayed_view (view, i) {
1384 view->win = newwin(view->height, 0, offset, 0);
1386 die("Failed to create %s view", view->name);
1388 scrollok(view->win, TRUE);
1390 view->title = newwin(1, 0, offset + view->height, 0);
1392 die("Failed to create title window");
1395 wresize(view->win, view->height, view->width);
1396 mvwin(view->win, offset, 0);
1397 mvwin(view->title, offset + view->height, 0);
1400 offset += view->height + 1;
1405 redraw_display(void)
1410 foreach_displayed_view (view, i) {
1412 update_view_title(view);
1417 update_display_cursor(void)
1419 struct view *view = display[current_view];
1421 /* Move the cursor to the right-most column of the cursor line.
1423 * XXX: This could turn out to be a bit expensive, but it ensures that
1424 * the cursor does not jump around. */
1426 wmove(view->win, view->lineno - view->offset, view->width - 1);
1427 wrefresh(view->win);
1435 /* Scrolling backend */
1437 do_scroll_view(struct view *view, int lines)
1439 bool redraw_current_line = FALSE;
1441 /* The rendering expects the new offset. */
1442 view->offset += lines;
1444 assert(0 <= view->offset && view->offset < view->lines);
1447 /* Move current line into the view. */
1448 if (view->lineno < view->offset) {
1449 view->lineno = view->offset;
1450 redraw_current_line = TRUE;
1451 } else if (view->lineno >= view->offset + view->height) {
1452 view->lineno = view->offset + view->height - 1;
1453 redraw_current_line = TRUE;
1456 assert(view->offset <= view->lineno && view->lineno < view->lines);
1458 /* Redraw the whole screen if scrolling is pointless. */
1459 if (view->height < ABS(lines)) {
1463 int line = lines > 0 ? view->height - lines : 0;
1464 int end = line + ABS(lines);
1466 wscrl(view->win, lines);
1468 for (; line < end; line++) {
1469 if (!draw_view_line(view, line))
1473 if (redraw_current_line)
1474 draw_view_line(view, view->lineno - view->offset);
1477 redrawwin(view->win);
1478 wrefresh(view->win);
1482 /* Scroll frontend */
1484 scroll_view(struct view *view, enum request request)
1488 assert(view_is_displayed(view));
1491 case REQ_SCROLL_PAGE_DOWN:
1492 lines = view->height;
1493 case REQ_SCROLL_LINE_DOWN:
1494 if (view->offset + lines > view->lines)
1495 lines = view->lines - view->offset;
1497 if (lines == 0 || view->offset + view->height >= view->lines) {
1498 report("Cannot scroll beyond the last line");
1503 case REQ_SCROLL_PAGE_UP:
1504 lines = view->height;
1505 case REQ_SCROLL_LINE_UP:
1506 if (lines > view->offset)
1507 lines = view->offset;
1510 report("Cannot scroll beyond the first line");
1518 die("request %d not handled in switch", request);
1521 do_scroll_view(view, lines);
1526 move_view(struct view *view, enum request request)
1528 int scroll_steps = 0;
1532 case REQ_MOVE_FIRST_LINE:
1533 steps = -view->lineno;
1536 case REQ_MOVE_LAST_LINE:
1537 steps = view->lines - view->lineno - 1;
1540 case REQ_MOVE_PAGE_UP:
1541 steps = view->height > view->lineno
1542 ? -view->lineno : -view->height;
1545 case REQ_MOVE_PAGE_DOWN:
1546 steps = view->lineno + view->height >= view->lines
1547 ? view->lines - view->lineno - 1 : view->height;
1559 die("request %d not handled in switch", request);
1562 if (steps <= 0 && view->lineno == 0) {
1563 report("Cannot move beyond the first line");
1566 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1567 report("Cannot move beyond the last line");
1571 /* Move the current line */
1572 view->lineno += steps;
1573 assert(0 <= view->lineno && view->lineno < view->lines);
1575 /* Check whether the view needs to be scrolled */
1576 if (view->lineno < view->offset ||
1577 view->lineno >= view->offset + view->height) {
1578 scroll_steps = steps;
1579 if (steps < 0 && -steps > view->offset) {
1580 scroll_steps = -view->offset;
1582 } else if (steps > 0) {
1583 if (view->lineno == view->lines - 1 &&
1584 view->lines > view->height) {
1585 scroll_steps = view->lines - view->offset - 1;
1586 if (scroll_steps >= view->height)
1587 scroll_steps -= view->height - 1;
1592 if (!view_is_displayed(view)) {
1593 view->offset += steps;
1594 view->ops->select(view, &view->line[view->lineno]);
1598 /* Repaint the old "current" line if we be scrolling */
1599 if (ABS(steps) < view->height)
1600 draw_view_line(view, view->lineno - steps - view->offset);
1603 do_scroll_view(view, scroll_steps);
1607 /* Draw the current line */
1608 draw_view_line(view, view->lineno - view->offset);
1610 redrawwin(view->win);
1611 wrefresh(view->win);
1620 static void search_view(struct view *view, enum request request);
1623 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1625 assert(view_is_displayed(view));
1627 if (!view->ops->grep(view, line))
1630 if (lineno - view->offset >= view->height) {
1631 view->offset = lineno;
1632 view->lineno = lineno;
1636 unsigned long old_lineno = view->lineno - view->offset;
1638 view->lineno = lineno;
1639 draw_view_line(view, old_lineno);
1641 draw_view_line(view, view->lineno - view->offset);
1642 redrawwin(view->win);
1643 wrefresh(view->win);
1646 report("Line %ld matches '%s'", lineno + 1, view->grep);
1651 find_next(struct view *view, enum request request)
1653 unsigned long lineno = view->lineno;
1658 report("No previous search");
1660 search_view(view, request);
1670 case REQ_SEARCH_BACK:
1679 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1680 lineno += direction;
1682 /* Note, lineno is unsigned long so will wrap around in which case it
1683 * will become bigger than view->lines. */
1684 for (; lineno < view->lines; lineno += direction) {
1685 struct line *line = &view->line[lineno];
1687 if (find_next_line(view, lineno, line))
1691 report("No match found for '%s'", view->grep);
1695 search_view(struct view *view, enum request request)
1700 regfree(view->regex);
1703 view->regex = calloc(1, sizeof(*view->regex));
1708 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1709 if (regex_err != 0) {
1710 char buf[SIZEOF_STR] = "unknown error";
1712 regerror(regex_err, view->regex, buf, sizeof(buf));
1713 report("Search failed: %s", buf);
1717 string_copy(view->grep, opt_search);
1719 find_next(view, request);
1723 * Incremental updating
1727 end_update(struct view *view)
1731 set_nonblocking_input(FALSE);
1732 if (view->pipe == stdin)
1740 begin_update(struct view *view)
1742 const char *id = view->id;
1748 string_copy(view->cmd, opt_cmd);
1750 /* When running random commands, the view ref could have become
1751 * invalid so clear it. */
1754 } else if (view == VIEW(REQ_VIEW_TREE)) {
1755 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1757 if (strcmp(view->vid, view->id))
1760 if (!string_format(view->cmd, format, id, opt_path))
1764 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1766 if (!string_format(view->cmd, format, id, id, id, id, id))
1770 /* Special case for the pager view. */
1772 view->pipe = opt_pipe;
1775 view->pipe = popen(view->cmd, "r");
1781 set_nonblocking_input(TRUE);
1786 string_copy(view->vid, id);
1791 for (i = 0; i < view->lines; i++)
1792 if (view->line[i].data)
1793 free(view->line[i].data);
1799 view->start_time = time(NULL);
1804 static struct line *
1805 realloc_lines(struct view *view, size_t line_size)
1807 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1813 view->line_size = line_size;
1818 update_view(struct view *view)
1820 char in_buffer[BUFSIZ];
1821 char out_buffer[BUFSIZ * 2];
1823 /* The number of lines to read. If too low it will cause too much
1824 * redrawing (and possible flickering), if too high responsiveness
1826 unsigned long lines = view->height;
1827 int redraw_from = -1;
1832 /* Only redraw if lines are visible. */
1833 if (view->offset + view->height >= view->lines)
1834 redraw_from = view->lines - view->offset;
1836 /* FIXME: This is probably not perfect for backgrounded views. */
1837 if (!realloc_lines(view, view->lines + lines))
1840 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1841 size_t linelen = strlen(line);
1844 line[linelen - 1] = 0;
1846 if (opt_iconv != ICONV_NONE) {
1848 size_t inlen = linelen;
1850 char *outbuf = out_buffer;
1851 size_t outlen = sizeof(out_buffer);
1855 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1856 if (ret != (size_t) -1) {
1858 linelen = strlen(out_buffer);
1862 if (!view->ops->read(view, line))
1872 lines = view->lines;
1873 for (digits = 0; lines; digits++)
1876 /* Keep the displayed view in sync with line number scaling. */
1877 if (digits != view->digits) {
1878 view->digits = digits;
1883 if (!view_is_displayed(view))
1886 if (view == VIEW(REQ_VIEW_TREE)) {
1887 /* Clear the view and redraw everything since the tree sorting
1888 * might have rearranged things. */
1891 } else if (redraw_from >= 0) {
1892 /* If this is an incremental update, redraw the previous line
1893 * since for commits some members could have changed when
1894 * loading the main view. */
1895 if (redraw_from > 0)
1898 /* Incrementally draw avoids flickering. */
1899 redraw_view_from(view, redraw_from);
1902 /* Update the title _after_ the redraw so that if the redraw picks up a
1903 * commit reference in view->ref it'll be available here. */
1904 update_view_title(view);
1907 if (ferror(view->pipe)) {
1908 report("Failed to read: %s", strerror(errno));
1911 } else if (feof(view->pipe)) {
1919 report("Allocation failure");
1931 static void open_help_view(struct view *view)
1934 int lines = ARRAY_SIZE(req_info) + 2;
1937 if (view->lines > 0)
1940 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1941 if (!req_info[i].request)
1944 view->line = calloc(lines, sizeof(*view->line));
1946 report("Allocation failure");
1950 view->ops->read(view, "Quick reference for tig keybindings:");
1952 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1955 if (!req_info[i].request) {
1956 view->ops->read(view, "");
1957 view->ops->read(view, req_info[i].help);
1961 key = get_key(req_info[i].request);
1962 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1965 view->ops->read(view, buf);
1970 OPEN_DEFAULT = 0, /* Use default view switching. */
1971 OPEN_SPLIT = 1, /* Split current view. */
1972 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1973 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1977 open_view(struct view *prev, enum request request, enum open_flags flags)
1979 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1980 bool split = !!(flags & OPEN_SPLIT);
1981 bool reload = !!(flags & OPEN_RELOAD);
1982 struct view *view = VIEW(request);
1983 int nviews = displayed_views();
1984 struct view *base_view = display[0];
1986 if (view == prev && nviews == 1 && !reload) {
1987 report("Already in %s view", view->name);
1991 if (view == VIEW(REQ_VIEW_HELP)) {
1992 open_help_view(view);
1994 } else if ((reload || strcmp(view->vid, view->id)) &&
1995 !begin_update(view)) {
1996 report("Failed to load %s view", view->name);
2005 /* Maximize the current view. */
2006 memset(display, 0, sizeof(display));
2008 display[current_view] = view;
2011 /* Resize the view when switching between split- and full-screen,
2012 * or when switching between two different full-screen views. */
2013 if (nviews != displayed_views() ||
2014 (nviews == 1 && base_view != display[0]))
2017 if (split && prev->lineno - prev->offset >= prev->height) {
2018 /* Take the title line into account. */
2019 int lines = prev->lineno - prev->offset - prev->height + 1;
2021 /* Scroll the view that was split if the current line is
2022 * outside the new limited view. */
2023 do_scroll_view(prev, lines);
2026 if (prev && view != prev) {
2027 if (split && !backgrounded) {
2028 /* "Blur" the previous view. */
2029 update_view_title(prev);
2032 view->parent = prev;
2035 if (view->pipe && view->lines == 0) {
2036 /* Clear the old view and let the incremental updating refill
2045 /* If the view is backgrounded the above calls to report()
2046 * won't redraw the view title. */
2048 update_view_title(view);
2053 * User request switch noodle
2057 view_driver(struct view *view, enum request request)
2064 case REQ_MOVE_PAGE_UP:
2065 case REQ_MOVE_PAGE_DOWN:
2066 case REQ_MOVE_FIRST_LINE:
2067 case REQ_MOVE_LAST_LINE:
2068 move_view(view, request);
2071 case REQ_SCROLL_LINE_DOWN:
2072 case REQ_SCROLL_LINE_UP:
2073 case REQ_SCROLL_PAGE_DOWN:
2074 case REQ_SCROLL_PAGE_UP:
2075 scroll_view(view, request);
2080 report("No file chosen, press 't' to open tree view");
2089 case REQ_VIEW_PAGER:
2090 open_view(view, request, OPEN_DEFAULT);
2095 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2097 if ((view == VIEW(REQ_VIEW_DIFF) &&
2098 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2099 (view == VIEW(REQ_VIEW_BLOB) &&
2100 view->parent == VIEW(REQ_VIEW_TREE))) {
2101 view = view->parent;
2102 move_view(view, request);
2103 if (view_is_displayed(view))
2104 update_view_title(view);
2106 move_view(view, request);
2113 report("Nothing to enter");
2116 return view->ops->enter(view, &view->line[view->lineno]);
2120 int nviews = displayed_views();
2121 int next_view = (current_view + 1) % nviews;
2123 if (next_view == current_view) {
2124 report("Only one view is displayed");
2128 current_view = next_view;
2129 /* Blur out the title of the previous view. */
2130 update_view_title(view);
2134 case REQ_TOGGLE_LINENO:
2135 opt_line_number = !opt_line_number;
2139 case REQ_TOGGLE_REV_GRAPH:
2140 opt_rev_graph = !opt_rev_graph;
2145 /* Always reload^Wrerun commands from the prompt. */
2146 open_view(view, opt_request, OPEN_RELOAD);
2150 case REQ_SEARCH_BACK:
2151 search_view(view, request);
2156 find_next(view, request);
2159 case REQ_STOP_LOADING:
2160 for (i = 0; i < ARRAY_SIZE(views); i++) {
2163 report("Stopped loading the %s view", view->name),
2168 case REQ_SHOW_VERSION:
2169 report("%s (built %s)", VERSION, __DATE__);
2172 case REQ_SCREEN_RESIZE:
2175 case REQ_SCREEN_REDRAW:
2183 case REQ_VIEW_CLOSE:
2184 /* XXX: Mark closed views by letting view->parent point to the
2185 * view itself. Parents to closed view should never be
2188 view->parent->parent != view->parent) {
2189 memset(display, 0, sizeof(display));
2191 display[current_view] = view->parent;
2192 view->parent = view;
2202 /* An unknown key will show most commonly used commands. */
2203 report("Unknown key, press 'h' for help");
2216 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2218 char *text = line->data;
2219 enum line_type type = line->type;
2220 int textlen = strlen(text);
2223 wmove(view->win, lineno, 0);
2227 wchgat(view->win, -1, 0, type, NULL);
2230 attr = get_line_attr(type);
2231 wattrset(view->win, attr);
2233 if (opt_line_number || opt_tab_size < TABSIZE) {
2234 static char spaces[] = " ";
2235 int col_offset = 0, col = 0;
2237 if (opt_line_number) {
2238 unsigned long real_lineno = view->offset + lineno + 1;
2240 if (real_lineno == 1 ||
2241 (real_lineno % opt_num_interval) == 0) {
2242 wprintw(view->win, "%.*d", view->digits, real_lineno);
2245 waddnstr(view->win, spaces,
2246 MIN(view->digits, STRING_SIZE(spaces)));
2248 waddstr(view->win, ": ");
2249 col_offset = view->digits + 2;
2252 while (text && col_offset + col < view->width) {
2253 int cols_max = view->width - col_offset - col;
2257 if (*text == '\t') {
2259 assert(sizeof(spaces) > TABSIZE);
2261 cols = opt_tab_size - (col % opt_tab_size);
2264 text = strchr(text, '\t');
2265 cols = line ? text - pos : strlen(pos);
2268 waddnstr(view->win, pos, MIN(cols, cols_max));
2273 int col = 0, pos = 0;
2275 for (; pos < textlen && col < view->width; pos++, col++)
2276 if (text[pos] == '\t')
2277 col += TABSIZE - (col % TABSIZE) - 1;
2279 waddnstr(view->win, text, pos);
2286 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2288 char refbuf[SIZEOF_STR];
2292 if (!string_format(refbuf, "git describe %s", commit_id))
2295 pipe = popen(refbuf, "r");
2299 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2300 ref = chomp_string(ref);
2306 /* This is the only fatal call, since it can "corrupt" the buffer. */
2307 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2314 add_pager_refs(struct view *view, struct line *line)
2316 char buf[SIZEOF_STR];
2317 char *commit_id = line->data + STRING_SIZE("commit ");
2319 size_t bufpos = 0, refpos = 0;
2320 const char *sep = "Refs: ";
2321 bool is_tag = FALSE;
2323 assert(line->type == LINE_COMMIT);
2325 refs = get_refs(commit_id);
2327 if (view == VIEW(REQ_VIEW_DIFF))
2328 goto try_add_describe_ref;
2333 struct ref *ref = refs[refpos];
2334 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2336 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2341 } while (refs[refpos++]->next);
2343 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2344 try_add_describe_ref:
2345 /* Add <tag>-g<commit_id> "fake" reference. */
2346 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2353 if (!realloc_lines(view, view->line_size + 1))
2356 line = &view->line[view->lines];
2357 line->data = strdup(buf);
2361 line->type = LINE_PP_REFS;
2366 pager_read(struct view *view, char *data)
2368 struct line *line = &view->line[view->lines];
2370 line->data = strdup(data);
2374 line->type = get_line_type(line->data);
2377 if (line->type == LINE_COMMIT &&
2378 (view == VIEW(REQ_VIEW_DIFF) ||
2379 view == VIEW(REQ_VIEW_LOG)))
2380 add_pager_refs(view, line);
2386 pager_enter(struct view *view, struct line *line)
2390 if (line->type == LINE_COMMIT &&
2391 (view == VIEW(REQ_VIEW_LOG) ||
2392 view == VIEW(REQ_VIEW_PAGER))) {
2393 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2397 /* Always scroll the view even if it was split. That way
2398 * you can use Enter to scroll through the log view and
2399 * split open each commit diff. */
2400 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2402 /* FIXME: A minor workaround. Scrolling the view will call report("")
2403 * but if we are scrolling a non-current view this won't properly
2404 * update the view title. */
2406 update_view_title(view);
2412 pager_grep(struct view *view, struct line *line)
2415 char *text = line->data;
2420 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2427 pager_select(struct view *view, struct line *line)
2429 if (line->type == LINE_COMMIT) {
2430 char *text = line->data;
2432 string_copy(view->ref, text + STRING_SIZE("commit "));
2433 string_copy(ref_commit, view->ref);
2437 static struct view_ops pager_ops = {
2451 /* Parse output from git-ls-tree(1):
2453 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2454 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2455 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2456 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2459 #define SIZEOF_TREE_ATTR \
2460 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2462 #define TREE_UP_FORMAT "040000 tree %s\t.."
2465 tree_compare_entry(enum line_type type1, char *name1,
2466 enum line_type type2, char *name2)
2468 if (type1 != type2) {
2469 if (type1 == LINE_TREE_DIR)
2474 return strcmp(name1, name2);
2478 tree_read(struct view *view, char *text)
2480 size_t textlen = strlen(text);
2481 char buf[SIZEOF_STR];
2483 enum line_type type;
2484 bool first_read = view->lines == 0;
2486 if (textlen <= SIZEOF_TREE_ATTR)
2489 type = text[STRING_SIZE("100644 ")] == 't'
2490 ? LINE_TREE_DIR : LINE_TREE_FILE;
2493 /* Add path info line */
2494 if (string_format(buf, "Directory path /%s", opt_path) &&
2495 realloc_lines(view, view->line_size + 1) &&
2496 pager_read(view, buf))
2497 view->line[view->lines - 1].type = LINE_DEFAULT;
2501 /* Insert "link" to parent directory. */
2503 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2504 realloc_lines(view, view->line_size + 1) &&
2505 pager_read(view, buf))
2506 view->line[view->lines - 1].type = LINE_TREE_DIR;
2511 /* Strip the path part ... */
2513 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2514 size_t striplen = strlen(opt_path);
2515 char *path = text + SIZEOF_TREE_ATTR;
2517 if (pathlen > striplen)
2518 memmove(path, path + striplen,
2519 pathlen - striplen + 1);
2522 /* Skip "Directory ..." and ".." line. */
2523 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2524 struct line *line = &view->line[pos];
2525 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2526 char *path2 = text + SIZEOF_TREE_ATTR;
2527 int cmp = tree_compare_entry(line->type, path1, type, path2);
2532 text = strdup(text);
2536 if (view->lines > pos)
2537 memmove(&view->line[pos + 1], &view->line[pos],
2538 (view->lines - pos) * sizeof(*line));
2540 line = &view->line[pos];
2547 if (!pager_read(view, text))
2550 /* Move the current line to the first tree entry. */
2554 view->line[view->lines - 1].type = type;
2559 tree_enter(struct view *view, struct line *line)
2561 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2562 enum request request;
2564 switch (line->type) {
2566 /* Depending on whether it is a subdir or parent (updir?) link
2567 * mangle the path buffer. */
2568 if (line == &view->line[1] && *opt_path) {
2569 size_t path_len = strlen(opt_path);
2570 char *dirsep = opt_path + path_len - 1;
2572 while (dirsep > opt_path && dirsep[-1] != '/')
2578 size_t pathlen = strlen(opt_path);
2579 size_t origlen = pathlen;
2580 char *data = line->data;
2581 char *basename = data + SIZEOF_TREE_ATTR;
2583 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2584 opt_path[origlen] = 0;
2589 /* Trees and subtrees share the same ID, so they are not not
2590 * unique like blobs. */
2591 flags |= OPEN_RELOAD;
2592 request = REQ_VIEW_TREE;
2595 case LINE_TREE_FILE:
2596 request = REQ_VIEW_BLOB;
2603 open_view(view, request, flags);
2609 tree_select(struct view *view, struct line *line)
2611 char *text = line->data;
2613 text += STRING_SIZE("100644 blob ");
2615 if (line->type == LINE_TREE_FILE) {
2616 string_ncopy(ref_blob, text, 40);
2617 /* Also update the blob view's ref, since all there must always
2619 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2621 } else if (line->type != LINE_TREE_DIR) {
2625 string_ncopy(view->ref, text, 40);
2628 static struct view_ops tree_ops = {
2638 blob_read(struct view *view, char *line)
2640 bool state = pager_read(view, line);
2643 view->line[view->lines - 1].type = LINE_DEFAULT;
2648 static struct view_ops blob_ops = {
2663 char id[SIZEOF_REV]; /* SHA1 ID. */
2664 char title[75]; /* First line of the commit message. */
2665 char author[75]; /* Author of the commit. */
2666 struct tm time; /* Date from the author ident. */
2667 struct ref **refs; /* Repository references. */
2668 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2669 size_t graph_size; /* The width of the graph array. */
2673 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2675 char buf[DATE_COLS + 1];
2676 struct commit *commit = line->data;
2677 enum line_type type;
2683 if (!*commit->author)
2686 wmove(view->win, lineno, col);
2690 wattrset(view->win, get_line_attr(type));
2691 wchgat(view->win, -1, 0, type, NULL);
2694 type = LINE_MAIN_COMMIT;
2695 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2698 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2699 waddnstr(view->win, buf, timelen);
2700 waddstr(view->win, " ");
2703 wmove(view->win, lineno, col);
2704 if (type != LINE_CURSOR)
2705 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2708 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2710 authorlen = strlen(commit->author);
2711 if (authorlen > AUTHOR_COLS - 2) {
2712 authorlen = AUTHOR_COLS - 2;
2718 waddnstr(view->win, commit->author, authorlen);
2719 if (type != LINE_CURSOR)
2720 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2721 waddch(view->win, '~');
2723 waddstr(view->win, commit->author);
2727 if (type != LINE_CURSOR)
2728 wattrset(view->win, A_NORMAL);
2730 if (opt_rev_graph && commit->graph_size) {
2733 wmove(view->win, lineno, col);
2734 /* Using waddch() instead of waddnstr() ensures that
2735 * they'll be rendered correctly for the cursor line. */
2736 for (i = 0; i < commit->graph_size; i++)
2737 waddch(view->win, commit->graph[i]);
2739 col += commit->graph_size + 1;
2742 wmove(view->win, lineno, col);
2748 if (type == LINE_CURSOR)
2750 else if (commit->refs[i]->tag)
2751 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2753 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2754 waddstr(view->win, "[");
2755 waddstr(view->win, commit->refs[i]->name);
2756 waddstr(view->win, "]");
2757 if (type != LINE_CURSOR)
2758 wattrset(view->win, A_NORMAL);
2759 waddstr(view->win, " ");
2760 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2761 } while (commit->refs[i++]->next);
2764 if (type != LINE_CURSOR)
2765 wattrset(view->win, get_line_attr(type));
2768 int titlelen = strlen(commit->title);
2770 if (col + titlelen > view->width)
2771 titlelen = view->width - col;
2773 waddnstr(view->win, commit->title, titlelen);
2779 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2781 main_read(struct view *view, char *line)
2783 enum line_type type = get_line_type(line);
2784 struct commit *commit = view->lines
2785 ? view->line[view->lines - 1].data : NULL;
2789 commit = calloc(1, sizeof(struct commit));
2793 line += STRING_SIZE("commit ");
2795 view->line[view->lines++].data = commit;
2796 string_copy(commit->id, line);
2797 commit->refs = get_refs(commit->id);
2798 commit->graph[commit->graph_size++] = ACS_LTEE;
2803 char *ident = line + STRING_SIZE("author ");
2804 char *end = strchr(ident, '<');
2810 char *email = end + 1;
2812 for (; end > ident && isspace(end[-1]); end--) ;
2814 if (end == ident && *email) {
2816 end = strchr(ident, '>');
2817 for (; end > ident && isspace(end[-1]); end--) ;
2822 /* End is NULL or ident meaning there's no author. */
2826 string_copy(commit->author, ident);
2828 /* Parse epoch and timezone */
2830 char *secs = strchr(end + 1, '>');
2834 if (!secs || secs[1] != ' ')
2838 time = (time_t) atol(secs);
2839 zone = strchr(secs, ' ');
2840 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2844 tz = ('0' - zone[1]) * 60 * 60 * 10;
2845 tz += ('0' - zone[2]) * 60 * 60;
2846 tz += ('0' - zone[3]) * 60;
2847 tz += ('0' - zone[4]) * 60;
2854 gmtime_r(&time, &commit->time);
2862 /* Fill in the commit title if it has not already been set. */
2863 if (commit->title[0])
2866 /* Require titles to start with a non-space character at the
2867 * offset used by git log. */
2868 /* FIXME: More gracefull handling of titles; append "..." to
2869 * shortened titles, etc. */
2870 if (strncmp(line, " ", 4) ||
2874 string_copy(commit->title, line + 4);
2881 main_enter(struct view *view, struct line *line)
2883 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2885 open_view(view, REQ_VIEW_DIFF, flags);
2890 main_grep(struct view *view, struct line *line)
2892 struct commit *commit = line->data;
2893 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2894 char buf[DATE_COLS + 1];
2897 for (state = S_TITLE; state < S_END; state++) {
2901 case S_TITLE: text = commit->title; break;
2902 case S_AUTHOR: text = commit->author; break;
2904 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2913 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2921 main_select(struct view *view, struct line *line)
2923 struct commit *commit = line->data;
2925 string_copy(view->ref, commit->id);
2926 string_copy(ref_commit, view->ref);
2929 static struct view_ops main_ops = {
2940 * Unicode / UTF-8 handling
2942 * NOTE: Much of the following code for dealing with unicode is derived from
2943 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2944 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2947 /* I've (over)annotated a lot of code snippets because I am not entirely
2948 * confident that the approach taken by this small UTF-8 interface is correct.
2952 unicode_width(unsigned long c)
2955 (c <= 0x115f /* Hangul Jamo */
2958 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2960 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2961 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2962 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2963 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2964 || (c >= 0xffe0 && c <= 0xffe6)
2965 || (c >= 0x20000 && c <= 0x2fffd)
2966 || (c >= 0x30000 && c <= 0x3fffd)))
2972 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2973 * Illegal bytes are set one. */
2974 static const unsigned char utf8_bytes[256] = {
2975 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,
2976 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,
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 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,
2982 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,
2985 /* Decode UTF-8 multi-byte representation into a unicode character. */
2986 static inline unsigned long
2987 utf8_to_unicode(const char *string, size_t length)
2989 unsigned long unicode;
2993 unicode = string[0];
2996 unicode = (string[0] & 0x1f) << 6;
2997 unicode += (string[1] & 0x3f);
3000 unicode = (string[0] & 0x0f) << 12;
3001 unicode += ((string[1] & 0x3f) << 6);
3002 unicode += (string[2] & 0x3f);
3005 unicode = (string[0] & 0x0f) << 18;
3006 unicode += ((string[1] & 0x3f) << 12);
3007 unicode += ((string[2] & 0x3f) << 6);
3008 unicode += (string[3] & 0x3f);
3011 unicode = (string[0] & 0x0f) << 24;
3012 unicode += ((string[1] & 0x3f) << 18);
3013 unicode += ((string[2] & 0x3f) << 12);
3014 unicode += ((string[3] & 0x3f) << 6);
3015 unicode += (string[4] & 0x3f);
3018 unicode = (string[0] & 0x01) << 30;
3019 unicode += ((string[1] & 0x3f) << 24);
3020 unicode += ((string[2] & 0x3f) << 18);
3021 unicode += ((string[3] & 0x3f) << 12);
3022 unicode += ((string[4] & 0x3f) << 6);
3023 unicode += (string[5] & 0x3f);
3026 die("Invalid unicode length");
3029 /* Invalid characters could return the special 0xfffd value but NUL
3030 * should be just as good. */
3031 return unicode > 0xffff ? 0 : unicode;
3034 /* Calculates how much of string can be shown within the given maximum width
3035 * and sets trimmed parameter to non-zero value if all of string could not be
3038 * Additionally, adds to coloffset how many many columns to move to align with
3039 * the expected position. Takes into account how multi-byte and double-width
3040 * characters will effect the cursor position.
3042 * Returns the number of bytes to output from string to satisfy max_width. */
3044 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3046 const char *start = string;
3047 const char *end = strchr(string, '\0');
3053 while (string < end) {
3054 int c = *(unsigned char *) string;
3055 unsigned char bytes = utf8_bytes[c];
3057 unsigned long unicode;
3059 if (string + bytes > end)
3062 /* Change representation to figure out whether
3063 * it is a single- or double-width character. */
3065 unicode = utf8_to_unicode(string, bytes);
3066 /* FIXME: Graceful handling of invalid unicode character. */
3070 ucwidth = unicode_width(unicode);
3072 if (width > max_width) {
3077 /* The column offset collects the differences between the
3078 * number of bytes encoding a character and the number of
3079 * columns will be used for rendering said character.
3081 * So if some character A is encoded in 2 bytes, but will be
3082 * represented on the screen using only 1 byte this will and up
3083 * adding 1 to the multi-byte column offset.
3085 * Assumes that no double-width character can be encoding in
3086 * less than two bytes. */
3087 if (bytes > ucwidth)
3088 mbwidth += bytes - ucwidth;
3093 *coloffset += mbwidth;
3095 return string - start;
3103 /* Whether or not the curses interface has been initialized. */
3104 static bool cursed = FALSE;
3106 /* The status window is used for polling keystrokes. */
3107 static WINDOW *status_win;
3109 /* Update status and title window. */
3111 report(const char *msg, ...)
3113 static bool empty = TRUE;
3114 struct view *view = display[current_view];
3116 if (!empty || *msg) {
3119 va_start(args, msg);
3122 wmove(status_win, 0, 0);
3124 vwprintw(status_win, msg, args);
3129 wrefresh(status_win);
3134 update_view_title(view);
3135 update_display_cursor();
3138 /* Controls when nodelay should be in effect when polling user input. */
3140 set_nonblocking_input(bool loading)
3142 static unsigned int loading_views;
3144 if ((loading == FALSE && loading_views-- == 1) ||
3145 (loading == TRUE && loading_views++ == 0))
3146 nodelay(status_win, loading);
3154 /* Initialize the curses library */
3155 if (isatty(STDIN_FILENO)) {
3156 cursed = !!initscr();
3158 /* Leave stdin and stdout alone when acting as a pager. */
3159 FILE *io = fopen("/dev/tty", "r+");
3162 die("Failed to open /dev/tty");
3163 cursed = !!newterm(NULL, io, io);
3167 die("Failed to initialize curses");
3169 nonl(); /* Tell curses not to do NL->CR/NL on output */
3170 cbreak(); /* Take input chars one at a time, no wait for \n */
3171 noecho(); /* Don't echo input */
3172 leaveok(stdscr, TRUE);
3177 getmaxyx(stdscr, y, x);
3178 status_win = newwin(1, 0, y - 1, 0);
3180 die("Failed to create status window");
3182 /* Enable keyboard mapping */
3183 keypad(status_win, TRUE);
3184 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3188 read_prompt(const char *prompt)
3190 enum { READING, STOP, CANCEL } status = READING;
3191 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3194 while (status == READING) {
3198 foreach_view (view, i)
3201 report("%s%.*s", prompt, pos, buf);
3202 /* Refresh, accept single keystroke of input */
3203 key = wgetch(status_win);
3208 status = pos ? STOP : CANCEL;
3226 if (pos >= sizeof(buf)) {
3227 report("Input string too long");
3232 buf[pos++] = (char) key;
3236 if (status == CANCEL) {
3237 /* Clear the status window */
3248 * Repository references
3251 static struct ref *refs;
3252 static size_t refs_size;
3254 /* Id <-> ref store */
3255 static struct ref ***id_refs;
3256 static size_t id_refs_size;
3258 static struct ref **
3261 struct ref ***tmp_id_refs;
3262 struct ref **ref_list = NULL;
3263 size_t ref_list_size = 0;
3266 for (i = 0; i < id_refs_size; i++)
3267 if (!strcmp(id, id_refs[i][0]->id))
3270 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3274 id_refs = tmp_id_refs;
3276 for (i = 0; i < refs_size; i++) {
3279 if (strcmp(id, refs[i].id))
3282 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3290 if (ref_list_size > 0)
3291 ref_list[ref_list_size - 1]->next = 1;
3292 ref_list[ref_list_size] = &refs[i];
3294 /* XXX: The properties of the commit chains ensures that we can
3295 * safely modify the shared ref. The repo references will
3296 * always be similar for the same id. */
3297 ref_list[ref_list_size]->next = 0;
3302 id_refs[id_refs_size++] = ref_list;
3308 read_ref(char *id, int idlen, char *name, int namelen)
3313 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3314 /* Commits referenced by tags has "^{}" appended. */
3315 if (name[namelen - 1] != '}')
3318 while (namelen > 0 && name[namelen] != '^')
3322 namelen -= STRING_SIZE("refs/tags/");
3323 name += STRING_SIZE("refs/tags/");
3325 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3326 namelen -= STRING_SIZE("refs/heads/");
3327 name += STRING_SIZE("refs/heads/");
3329 } else if (!strcmp(name, "HEAD")) {
3333 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3337 ref = &refs[refs_size++];
3338 ref->name = malloc(namelen + 1);
3342 strncpy(ref->name, name, namelen);
3343 ref->name[namelen] = 0;
3345 string_copy(ref->id, id);
3353 const char *cmd_env = getenv("TIG_LS_REMOTE");
3354 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3356 return read_properties(popen(cmd, "r"), "\t", read_ref);
3360 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3362 if (!strcmp(name, "i18n.commitencoding"))
3363 string_copy(opt_encoding, value);
3369 load_repo_config(void)
3371 return read_properties(popen("git repo-config --list", "r"),
3372 "=", read_repo_config_option);
3376 read_properties(FILE *pipe, const char *separators,
3377 int (*read_property)(char *, int, char *, int))
3379 char buffer[BUFSIZ];
3386 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3391 name = chomp_string(name);
3392 namelen = strcspn(name, separators);
3394 if (name[namelen]) {
3396 value = chomp_string(name + namelen + 1);
3397 valuelen = strlen(value);
3404 state = read_property(name, namelen, value, valuelen);
3407 if (state != ERR && ferror(pipe))
3420 static void __NORETURN
3423 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3429 static void __NORETURN
3430 die(const char *err, ...)
3436 va_start(args, err);
3437 fputs("tig: ", stderr);
3438 vfprintf(stderr, err, args);
3439 fputs("\n", stderr);
3446 main(int argc, char *argv[])
3449 enum request request;
3452 signal(SIGINT, quit);
3454 if (setlocale(LC_ALL, "")) {
3455 string_copy(opt_codeset, nl_langinfo(CODESET));
3458 if (load_options() == ERR)
3459 die("Failed to load user config.");
3461 /* Load the repo config file so options can be overwritten from
3462 * the command line. */
3463 if (load_repo_config() == ERR)
3464 die("Failed to load repo config.");
3466 if (!parse_options(argc, argv))
3469 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3470 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3471 if (opt_iconv == ICONV_NONE)
3472 die("Failed to initialize character set conversion");
3475 if (load_refs() == ERR)
3476 die("Failed to load refs.");
3478 /* Require a git repository unless when running in pager mode. */
3479 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3480 die("Not a git repository");
3482 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3483 view->cmd_env = getenv(view->cmd_env);
3485 request = opt_request;
3489 while (view_driver(display[current_view], request)) {
3493 foreach_view (view, i)
3496 /* Refresh, accept single keystroke of input */
3497 key = wgetch(status_win);
3499 request = get_keybinding(display[current_view]->keymap, key);
3501 /* Some low-level request handling. This keeps access to
3502 * status_win restricted. */
3506 char *cmd = read_prompt(":");
3508 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3509 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3510 opt_request = REQ_VIEW_DIFF;
3512 opt_request = REQ_VIEW_PAGER;
3521 case REQ_SEARCH_BACK:
3523 const char *prompt = request == REQ_SEARCH
3525 char *search = read_prompt(prompt);
3528 string_copy(opt_search, search);
3533 case REQ_SCREEN_RESIZE:
3537 getmaxyx(stdscr, height, width);
3539 /* Resize the status view and let the view driver take
3540 * care of resizing the displayed views. */
3541 wresize(status_win, 1, width);
3542 mvwin(status_win, height - 1, 0);
3543 wrefresh(status_win);