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);
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);
1225 static struct view_ops pager_ops;
1226 static struct view_ops main_ops;
1227 static struct view_ops tree_ops;
1228 static struct view_ops blob_ops;
1230 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1231 { name, cmd, #env, ref, ops, map}
1233 #define VIEW_(id, name, ops, ref) \
1234 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1237 static struct view views[] = {
1238 VIEW_(MAIN, "main", &main_ops, ref_head),
1239 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1240 VIEW_(LOG, "log", &pager_ops, ref_head),
1241 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1242 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1243 VIEW_(HELP, "help", &pager_ops, "static"),
1244 VIEW_(PAGER, "pager", &pager_ops, "static"),
1247 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1249 #define foreach_view(view, i) \
1250 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1252 #define view_is_displayed(view) \
1253 (view == display[0] || view == display[1])
1256 draw_view_line(struct view *view, unsigned int lineno)
1258 assert(view_is_displayed(view));
1260 if (view->offset + lineno >= view->lines)
1263 return view->ops->draw(view, &view->line[view->offset + lineno], lineno);
1267 redraw_view_from(struct view *view, int lineno)
1269 assert(0 <= lineno && lineno < view->height);
1271 for (; lineno < view->height; lineno++) {
1272 if (!draw_view_line(view, lineno))
1276 redrawwin(view->win);
1277 wrefresh(view->win);
1281 redraw_view(struct view *view)
1284 redraw_view_from(view, 0);
1289 update_view_title(struct view *view)
1291 assert(view_is_displayed(view));
1293 if (view == display[current_view])
1294 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1296 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1298 werase(view->title);
1299 wmove(view->title, 0, 0);
1302 wprintw(view->title, "[%s] %s", view->name, view->ref);
1304 wprintw(view->title, "[%s]", view->name);
1306 if (view->lines || view->pipe) {
1307 unsigned int view_lines = view->offset + view->height;
1308 unsigned int lines = view->lines
1309 ? MIN(view_lines, view->lines) * 100 / view->lines
1312 wprintw(view->title, " - %s %d of %d (%d%%)",
1320 time_t secs = time(NULL) - view->start_time;
1322 /* Three git seconds are a long time ... */
1324 wprintw(view->title, " %lds", secs);
1327 wmove(view->title, 0, view->width - 1);
1328 wrefresh(view->title);
1332 resize_display(void)
1335 struct view *base = display[0];
1336 struct view *view = display[1] ? display[1] : display[0];
1338 /* Setup window dimensions */
1340 getmaxyx(stdscr, base->height, base->width);
1342 /* Make room for the status window. */
1346 /* Horizontal split. */
1347 view->width = base->width;
1348 view->height = SCALE_SPLIT_VIEW(base->height);
1349 base->height -= view->height;
1351 /* Make room for the title bar. */
1355 /* Make room for the title bar. */
1360 foreach_displayed_view (view, i) {
1362 view->win = newwin(view->height, 0, offset, 0);
1364 die("Failed to create %s view", view->name);
1366 scrollok(view->win, TRUE);
1368 view->title = newwin(1, 0, offset + view->height, 0);
1370 die("Failed to create title window");
1373 wresize(view->win, view->height, view->width);
1374 mvwin(view->win, offset, 0);
1375 mvwin(view->title, offset + view->height, 0);
1378 offset += view->height + 1;
1383 redraw_display(void)
1388 foreach_displayed_view (view, i) {
1390 update_view_title(view);
1395 update_display_cursor(void)
1397 struct view *view = display[current_view];
1399 /* Move the cursor to the right-most column of the cursor line.
1401 * XXX: This could turn out to be a bit expensive, but it ensures that
1402 * the cursor does not jump around. */
1404 wmove(view->win, view->lineno - view->offset, view->width - 1);
1405 wrefresh(view->win);
1413 /* Scrolling backend */
1415 do_scroll_view(struct view *view, int lines, bool redraw)
1417 assert(view_is_displayed(view));
1419 /* The rendering expects the new offset. */
1420 view->offset += lines;
1422 assert(0 <= view->offset && view->offset < view->lines);
1425 /* Redraw the whole screen if scrolling is pointless. */
1426 if (view->height < ABS(lines)) {
1430 int line = lines > 0 ? view->height - lines : 0;
1431 int end = line + ABS(lines);
1433 wscrl(view->win, lines);
1435 for (; line < end; line++) {
1436 if (!draw_view_line(view, line))
1441 /* Move current line into the view. */
1442 if (view->lineno < view->offset) {
1443 view->lineno = view->offset;
1444 draw_view_line(view, 0);
1446 } else if (view->lineno >= view->offset + view->height) {
1447 if (view->lineno == view->offset + view->height) {
1448 /* Clear the hidden line so it doesn't show if the view
1449 * is scrolled up. */
1450 wmove(view->win, view->height, 0);
1451 wclrtoeol(view->win);
1453 view->lineno = view->offset + view->height - 1;
1454 draw_view_line(view, view->lineno - view->offset);
1457 assert(view->offset <= view->lineno && view->lineno < view->lines);
1462 redrawwin(view->win);
1463 wrefresh(view->win);
1467 /* Scroll frontend */
1469 scroll_view(struct view *view, enum request request)
1474 case REQ_SCROLL_PAGE_DOWN:
1475 lines = view->height;
1476 case REQ_SCROLL_LINE_DOWN:
1477 if (view->offset + lines > view->lines)
1478 lines = view->lines - view->offset;
1480 if (lines == 0 || view->offset + view->height >= view->lines) {
1481 report("Cannot scroll beyond the last line");
1486 case REQ_SCROLL_PAGE_UP:
1487 lines = view->height;
1488 case REQ_SCROLL_LINE_UP:
1489 if (lines > view->offset)
1490 lines = view->offset;
1493 report("Cannot scroll beyond the first line");
1501 die("request %d not handled in switch", request);
1504 do_scroll_view(view, lines, TRUE);
1509 move_view(struct view *view, enum request request, bool redraw)
1514 case REQ_MOVE_FIRST_LINE:
1515 steps = -view->lineno;
1518 case REQ_MOVE_LAST_LINE:
1519 steps = view->lines - view->lineno - 1;
1522 case REQ_MOVE_PAGE_UP:
1523 steps = view->height > view->lineno
1524 ? -view->lineno : -view->height;
1527 case REQ_MOVE_PAGE_DOWN:
1528 steps = view->lineno + view->height >= view->lines
1529 ? view->lines - view->lineno - 1 : view->height;
1541 die("request %d not handled in switch", request);
1544 if (steps <= 0 && view->lineno == 0) {
1545 report("Cannot move beyond the first line");
1548 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1549 report("Cannot move beyond the last line");
1553 /* Move the current line */
1554 view->lineno += steps;
1555 assert(0 <= view->lineno && view->lineno < view->lines);
1557 /* Repaint the old "current" line if we be scrolling */
1558 if (ABS(steps) < view->height) {
1559 int prev_lineno = view->lineno - steps - view->offset;
1561 wmove(view->win, prev_lineno, 0);
1562 wclrtoeol(view->win);
1563 draw_view_line(view, prev_lineno);
1566 /* Check whether the view needs to be scrolled */
1567 if (view->lineno < view->offset ||
1568 view->lineno >= view->offset + view->height) {
1569 if (steps < 0 && -steps > view->offset) {
1570 steps = -view->offset;
1572 } else if (steps > 0) {
1573 if (view->lineno == view->lines - 1 &&
1574 view->lines > view->height) {
1575 steps = view->lines - view->offset - 1;
1576 if (steps >= view->height)
1577 steps -= view->height - 1;
1581 do_scroll_view(view, steps, redraw);
1585 /* Draw the current line */
1586 draw_view_line(view, view->lineno - view->offset);
1591 redrawwin(view->win);
1592 wrefresh(view->win);
1601 static void search_view(struct view *view, enum request request, const char *search);
1604 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1606 assert(view_is_displayed(view));
1608 if (!view->ops->grep(view, line))
1611 if (lineno - view->offset >= view->height) {
1612 view->offset = lineno;
1613 view->lineno = lineno;
1617 unsigned long old_lineno = view->lineno - view->offset;
1619 view->lineno = lineno;
1621 wmove(view->win, old_lineno, 0);
1622 wclrtoeol(view->win);
1623 draw_view_line(view, old_lineno);
1625 draw_view_line(view, view->lineno - view->offset);
1626 redrawwin(view->win);
1627 wrefresh(view->win);
1630 report("Line %ld matches '%s'", lineno + 1, view->grep);
1635 find_next(struct view *view, enum request request)
1637 unsigned long lineno = view->lineno;
1642 report("No previous search");
1644 search_view(view, request, opt_search);
1654 case REQ_SEARCH_BACK:
1663 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1664 lineno += direction;
1666 /* Note, lineno is unsigned long so will wrap around in which case it
1667 * will become bigger than view->lines. */
1668 for (; lineno < view->lines; lineno += direction) {
1669 struct line *line = &view->line[lineno];
1671 if (find_next_line(view, lineno, line))
1675 report("No match found for '%s'", view->grep);
1679 search_view(struct view *view, enum request request, const char *search)
1684 regfree(&view->regex);
1688 regex_err = regcomp(&view->regex, search, REG_EXTENDED);
1689 if (regex_err != 0) {
1690 char buf[SIZEOF_STR] = "unknown error";
1692 regerror(regex_err, &view->regex, buf, sizeof(buf));
1693 report("Search failed: %s", buf);
1697 string_copy(view->grep, search);
1699 find_next(view, request);
1703 * Incremental updating
1707 end_update(struct view *view)
1711 set_nonblocking_input(FALSE);
1712 if (view->pipe == stdin)
1720 begin_update(struct view *view)
1722 const char *id = view->id;
1728 string_copy(view->cmd, opt_cmd);
1730 /* When running random commands, the view ref could have become
1731 * invalid so clear it. */
1734 } else if (view == VIEW(REQ_VIEW_TREE)) {
1735 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1737 if (strcmp(view->vid, view->id))
1740 if (!string_format(view->cmd, format, id, opt_path))
1744 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1746 if (!string_format(view->cmd, format, id, id, id, id, id))
1750 /* Special case for the pager view. */
1752 view->pipe = opt_pipe;
1755 view->pipe = popen(view->cmd, "r");
1761 set_nonblocking_input(TRUE);
1766 string_copy(view->vid, id);
1771 for (i = 0; i < view->lines; i++)
1772 if (view->line[i].data)
1773 free(view->line[i].data);
1779 view->start_time = time(NULL);
1784 static struct line *
1785 realloc_lines(struct view *view, size_t line_size)
1787 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1793 view->line_size = line_size;
1798 update_view(struct view *view)
1800 char in_buffer[BUFSIZ];
1801 char out_buffer[BUFSIZ * 2];
1803 /* The number of lines to read. If too low it will cause too much
1804 * redrawing (and possible flickering), if too high responsiveness
1806 unsigned long lines = view->height;
1807 int redraw_from = -1;
1812 /* Only redraw if lines are visible. */
1813 if (view->offset + view->height >= view->lines)
1814 redraw_from = view->lines - view->offset;
1816 /* FIXME: This is probably not perfect for backgrounded views. */
1817 if (!realloc_lines(view, view->lines + lines))
1820 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1821 size_t linelen = strlen(line);
1824 line[linelen - 1] = 0;
1826 if (opt_iconv != ICONV_NONE) {
1828 size_t inlen = linelen;
1830 char *outbuf = out_buffer;
1831 size_t outlen = sizeof(out_buffer);
1835 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1836 if (ret != (size_t) -1) {
1838 linelen = strlen(out_buffer);
1842 if (!view->ops->read(view, line))
1852 lines = view->lines;
1853 for (digits = 0; lines; digits++)
1856 /* Keep the displayed view in sync with line number scaling. */
1857 if (digits != view->digits) {
1858 view->digits = digits;
1863 if (!view_is_displayed(view))
1866 if (view == VIEW(REQ_VIEW_TREE)) {
1867 /* Clear the view and redraw everything since the tree sorting
1868 * might have rearranged things. */
1871 } else if (redraw_from >= 0) {
1872 /* If this is an incremental update, redraw the previous line
1873 * since for commits some members could have changed when
1874 * loading the main view. */
1875 if (redraw_from > 0)
1878 /* Incrementally draw avoids flickering. */
1879 redraw_view_from(view, redraw_from);
1882 /* Update the title _after_ the redraw so that if the redraw picks up a
1883 * commit reference in view->ref it'll be available here. */
1884 update_view_title(view);
1887 if (ferror(view->pipe)) {
1888 report("Failed to read: %s", strerror(errno));
1891 } else if (feof(view->pipe)) {
1899 report("Allocation failure");
1911 static void open_help_view(struct view *view)
1914 int lines = ARRAY_SIZE(req_info) + 2;
1917 if (view->lines > 0)
1920 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1921 if (!req_info[i].request)
1924 view->line = calloc(lines, sizeof(*view->line));
1926 report("Allocation failure");
1930 view->ops->read(view, "Quick reference for tig keybindings:");
1932 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1935 if (!req_info[i].request) {
1936 view->ops->read(view, "");
1937 view->ops->read(view, req_info[i].help);
1941 key = get_key(req_info[i].request);
1942 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1945 view->ops->read(view, buf);
1950 OPEN_DEFAULT = 0, /* Use default view switching. */
1951 OPEN_SPLIT = 1, /* Split current view. */
1952 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1953 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1957 open_view(struct view *prev, enum request request, enum open_flags flags)
1959 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1960 bool split = !!(flags & OPEN_SPLIT);
1961 bool reload = !!(flags & OPEN_RELOAD);
1962 struct view *view = VIEW(request);
1963 int nviews = displayed_views();
1964 struct view *base_view = display[0];
1966 if (view == prev && nviews == 1 && !reload) {
1967 report("Already in %s view", view->name);
1971 if (view == VIEW(REQ_VIEW_HELP)) {
1972 open_help_view(view);
1974 } else if ((reload || strcmp(view->vid, view->id)) &&
1975 !begin_update(view)) {
1976 report("Failed to load %s view", view->name);
1985 /* Maximize the current view. */
1986 memset(display, 0, sizeof(display));
1988 display[current_view] = view;
1991 /* Resize the view when switching between split- and full-screen,
1992 * or when switching between two different full-screen views. */
1993 if (nviews != displayed_views() ||
1994 (nviews == 1 && base_view != display[0]))
1997 if (split && prev->lineno - prev->offset >= prev->height) {
1998 /* Take the title line into account. */
1999 int lines = prev->lineno - prev->offset - prev->height + 1;
2001 /* Scroll the view that was split if the current line is
2002 * outside the new limited view. */
2003 do_scroll_view(prev, lines, TRUE);
2006 if (prev && view != prev) {
2007 if (split && !backgrounded) {
2008 /* "Blur" the previous view. */
2009 update_view_title(prev);
2012 view->parent = prev;
2015 if (view->pipe && view->lines == 0) {
2016 /* Clear the old view and let the incremental updating refill
2025 /* If the view is backgrounded the above calls to report()
2026 * won't redraw the view title. */
2028 update_view_title(view);
2033 * User request switch noodle
2037 view_driver(struct view *view, enum request request)
2044 case REQ_MOVE_PAGE_UP:
2045 case REQ_MOVE_PAGE_DOWN:
2046 case REQ_MOVE_FIRST_LINE:
2047 case REQ_MOVE_LAST_LINE:
2048 move_view(view, request, TRUE);
2051 case REQ_SCROLL_LINE_DOWN:
2052 case REQ_SCROLL_LINE_UP:
2053 case REQ_SCROLL_PAGE_DOWN:
2054 case REQ_SCROLL_PAGE_UP:
2055 scroll_view(view, request);
2060 report("No file chosen, press 't' to open tree view");
2069 case REQ_VIEW_PAGER:
2070 open_view(view, request, OPEN_DEFAULT);
2075 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2077 if ((view == VIEW(REQ_VIEW_DIFF) &&
2078 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2079 (view == VIEW(REQ_VIEW_BLOB) &&
2080 view->parent == VIEW(REQ_VIEW_TREE))) {
2081 bool redraw = display[1] == view;
2083 view = view->parent;
2084 move_view(view, request, redraw);
2086 update_view_title(view);
2088 move_view(view, request, TRUE);
2095 report("Nothing to enter");
2098 return view->ops->enter(view, &view->line[view->lineno]);
2102 int nviews = displayed_views();
2103 int next_view = (current_view + 1) % nviews;
2105 if (next_view == current_view) {
2106 report("Only one view is displayed");
2110 current_view = next_view;
2111 /* Blur out the title of the previous view. */
2112 update_view_title(view);
2116 case REQ_TOGGLE_LINENO:
2117 opt_line_number = !opt_line_number;
2121 case REQ_TOGGLE_REV_GRAPH:
2122 opt_rev_graph = !opt_rev_graph;
2127 /* Always reload^Wrerun commands from the prompt. */
2128 open_view(view, opt_request, OPEN_RELOAD);
2132 case REQ_SEARCH_BACK:
2133 search_view(view, request, opt_search);
2138 find_next(view, request);
2141 case REQ_STOP_LOADING:
2142 for (i = 0; i < ARRAY_SIZE(views); i++) {
2145 report("Stopped loading the %s view", view->name),
2150 case REQ_SHOW_VERSION:
2151 report("%s (built %s)", VERSION, __DATE__);
2154 case REQ_SCREEN_RESIZE:
2157 case REQ_SCREEN_REDRAW:
2165 case REQ_VIEW_CLOSE:
2166 /* XXX: Mark closed views by letting view->parent point to the
2167 * view itself. Parents to closed view should never be
2170 view->parent->parent != view->parent) {
2171 memset(display, 0, sizeof(display));
2173 display[current_view] = view->parent;
2174 view->parent = view;
2184 /* An unknown key will show most commonly used commands. */
2185 report("Unknown key, press 'h' for help");
2198 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2200 char *text = line->data;
2201 enum line_type type = line->type;
2202 int textlen = strlen(text);
2205 wmove(view->win, lineno, 0);
2207 if (view->offset + lineno == view->lineno) {
2208 if (type == LINE_COMMIT) {
2209 string_copy(view->ref, text + 7);
2210 string_copy(ref_commit, view->ref);
2212 } else if (type == LINE_TREE_DIR || type == LINE_TREE_FILE) {
2213 string_ncopy(view->ref, text + STRING_SIZE("100644 blob "), 40);
2214 string_copy(ref_blob, view->ref);
2218 wchgat(view->win, -1, 0, type, NULL);
2221 attr = get_line_attr(type);
2222 wattrset(view->win, attr);
2224 if (opt_line_number || opt_tab_size < TABSIZE) {
2225 static char spaces[] = " ";
2226 int col_offset = 0, col = 0;
2228 if (opt_line_number) {
2229 unsigned long real_lineno = view->offset + lineno + 1;
2231 if (real_lineno == 1 ||
2232 (real_lineno % opt_num_interval) == 0) {
2233 wprintw(view->win, "%.*d", view->digits, real_lineno);
2236 waddnstr(view->win, spaces,
2237 MIN(view->digits, STRING_SIZE(spaces)));
2239 waddstr(view->win, ": ");
2240 col_offset = view->digits + 2;
2243 while (text && col_offset + col < view->width) {
2244 int cols_max = view->width - col_offset - col;
2248 if (*text == '\t') {
2250 assert(sizeof(spaces) > TABSIZE);
2252 cols = opt_tab_size - (col % opt_tab_size);
2255 text = strchr(text, '\t');
2256 cols = line ? text - pos : strlen(pos);
2259 waddnstr(view->win, pos, MIN(cols, cols_max));
2264 int col = 0, pos = 0;
2266 for (; pos < textlen && col < view->width; pos++, col++)
2267 if (text[pos] == '\t')
2268 col += TABSIZE - (col % TABSIZE) - 1;
2270 waddnstr(view->win, text, pos);
2277 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2279 char refbuf[SIZEOF_STR];
2283 if (!string_format(refbuf, "git describe %s", commit_id))
2286 pipe = popen(refbuf, "r");
2290 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2291 ref = chomp_string(ref);
2297 /* This is the only fatal call, since it can "corrupt" the buffer. */
2298 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2305 add_pager_refs(struct view *view, struct line *line)
2307 char buf[SIZEOF_STR];
2308 char *commit_id = line->data + STRING_SIZE("commit ");
2310 size_t bufpos = 0, refpos = 0;
2311 const char *sep = "Refs: ";
2312 bool is_tag = FALSE;
2314 assert(line->type == LINE_COMMIT);
2316 refs = get_refs(commit_id);
2318 if (view == VIEW(REQ_VIEW_DIFF))
2319 goto try_add_describe_ref;
2324 struct ref *ref = refs[refpos];
2325 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2327 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2332 } while (refs[refpos++]->next);
2334 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2335 try_add_describe_ref:
2336 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2340 if (!realloc_lines(view, view->line_size + 1))
2343 line = &view->line[view->lines];
2344 line->data = strdup(buf);
2348 line->type = LINE_PP_REFS;
2353 pager_read(struct view *view, char *data)
2355 struct line *line = &view->line[view->lines];
2357 line->data = strdup(data);
2361 line->type = get_line_type(line->data);
2364 if (line->type == LINE_COMMIT &&
2365 (view == VIEW(REQ_VIEW_DIFF) ||
2366 view == VIEW(REQ_VIEW_LOG)))
2367 add_pager_refs(view, line);
2373 pager_enter(struct view *view, struct line *line)
2377 if (line->type == LINE_COMMIT &&
2378 (view == VIEW(REQ_VIEW_LOG) ||
2379 view == VIEW(REQ_VIEW_PAGER))) {
2380 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2384 /* Always scroll the view even if it was split. That way
2385 * you can use Enter to scroll through the log view and
2386 * split open each commit diff. */
2387 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2389 /* FIXME: A minor workaround. Scrolling the view will call report("")
2390 * but if we are scrolling a non-current view this won't properly
2391 * update the view title. */
2393 update_view_title(view);
2399 pager_grep(struct view *view, struct line *line)
2402 char *text = line->data;
2407 if (regexec(&view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2413 static struct view_ops pager_ops = {
2426 /* Parse output from git ls-tree:
2428 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2429 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2430 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2431 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2434 #define SIZEOF_TREE_ATTR \
2435 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2437 #define TREE_UP_FORMAT "040000 tree %s\t.."
2440 tree_compare_entry(enum line_type type1, char *name1,
2441 enum line_type type2, char *name2)
2443 if (type1 != type2) {
2444 if (type1 == LINE_TREE_DIR)
2449 return strcmp(name1, name2);
2453 tree_read(struct view *view, char *text)
2455 size_t textlen = strlen(text);
2456 char buf[SIZEOF_STR];
2458 enum line_type type;
2459 bool first_read = view->lines == 0;
2461 if (textlen <= SIZEOF_TREE_ATTR)
2464 type = text[STRING_SIZE("100644 ")] == 't'
2465 ? LINE_TREE_DIR : LINE_TREE_FILE;
2468 /* Add path info line */
2469 if (string_format(buf, "Directory path /%s", opt_path) &&
2470 realloc_lines(view, view->line_size + 1) &&
2471 pager_read(view, buf))
2472 view->line[view->lines - 1].type = LINE_DEFAULT;
2476 /* Insert "link" to parent directory. */
2478 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2479 realloc_lines(view, view->line_size + 1) &&
2480 pager_read(view, buf))
2481 view->line[view->lines - 1].type = LINE_TREE_DIR;
2486 /* Strip the path part ... */
2488 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2489 size_t striplen = strlen(opt_path);
2490 char *path = text + SIZEOF_TREE_ATTR;
2492 if (pathlen > striplen)
2493 memmove(path, path + striplen,
2494 pathlen - striplen + 1);
2497 /* Skip "Directory ..." and ".." line. */
2498 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2499 struct line *line = &view->line[pos];
2500 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2501 char *path2 = text + SIZEOF_TREE_ATTR;
2502 int cmp = tree_compare_entry(line->type, path1, type, path2);
2507 text = strdup(text);
2511 if (view->lines > pos)
2512 memmove(&view->line[pos + 1], &view->line[pos],
2513 (view->lines - pos) * sizeof(*line));
2515 line = &view->line[pos];
2522 if (!pager_read(view, text))
2525 /* Move the current line to the first tree entry. */
2529 view->line[view->lines - 1].type = type;
2534 tree_enter(struct view *view, struct line *line)
2536 enum open_flags flags = OPEN_DEFAULT;
2537 char *data = line->data;
2538 enum request request;
2540 switch (line->type) {
2542 /* Depending on whether it is a subdir or parent (updir?) link
2543 * mangle the path buffer. */
2544 if (line == &view->line[1] && *opt_path) {
2545 size_t path_len = strlen(opt_path);
2546 char *dirsep = opt_path + path_len - 1;
2548 while (dirsep > opt_path && dirsep[-1] != '/')
2554 size_t pathlen = strlen(opt_path);
2555 size_t origlen = pathlen;
2556 char *basename = data + SIZEOF_TREE_ATTR;
2558 if (string_format_from(opt_path, &pathlen, "%s/", basename)) {
2559 opt_path[origlen] = 0;
2564 /* Trees and subtrees share the same ID, so they are not not
2565 * unique like blobs. */
2566 flags |= OPEN_RELOAD;
2567 request = REQ_VIEW_TREE;
2570 case LINE_TREE_FILE:
2571 /* This causes the blob view to become split, and not having it
2572 * in the tree dir case will make the blob view automatically
2573 * disappear when moving to a different directory. */
2574 flags |= OPEN_SPLIT;
2575 request = REQ_VIEW_BLOB;
2582 open_view(view, request, flags);
2584 if (!VIEW(request)->pipe)
2587 /* For tree views insert the path to the parent as the first line. */
2588 if (request == REQ_VIEW_BLOB) {
2589 /* Mirror what is showed in the title bar. */
2590 string_ncopy(ref_blob, data + STRING_SIZE("100644 blob "), 40);
2591 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2598 static struct view_ops tree_ops = {
2607 blob_read(struct view *view, char *line)
2609 bool state = pager_read(view, line);
2612 view->line[view->lines - 1].type = LINE_DEFAULT;
2617 static struct view_ops blob_ops = {
2631 char id[41]; /* SHA1 ID. */
2632 char title[75]; /* First line of the commit message. */
2633 char author[75]; /* Author of the commit. */
2634 struct tm time; /* Date from the author ident. */
2635 struct ref **refs; /* Repository references. */
2636 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2637 size_t graph_size; /* The width of the graph array. */
2641 main_draw(struct view *view, struct line *line, unsigned int lineno)
2643 char buf[DATE_COLS + 1];
2644 struct commit *commit = line->data;
2645 enum line_type type;
2651 if (!*commit->author)
2654 wmove(view->win, lineno, col);
2656 if (view->offset + lineno == view->lineno) {
2657 string_copy(view->ref, commit->id);
2658 string_copy(ref_commit, view->ref);
2660 wattrset(view->win, get_line_attr(type));
2661 wchgat(view->win, -1, 0, type, NULL);
2664 type = LINE_MAIN_COMMIT;
2665 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2668 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2669 waddnstr(view->win, buf, timelen);
2670 waddstr(view->win, " ");
2673 wmove(view->win, lineno, col);
2674 if (type != LINE_CURSOR)
2675 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2678 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2680 authorlen = strlen(commit->author);
2681 if (authorlen > AUTHOR_COLS - 2) {
2682 authorlen = AUTHOR_COLS - 2;
2688 waddnstr(view->win, commit->author, authorlen);
2689 if (type != LINE_CURSOR)
2690 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2691 waddch(view->win, '~');
2693 waddstr(view->win, commit->author);
2697 if (type != LINE_CURSOR)
2698 wattrset(view->win, A_NORMAL);
2700 if (opt_rev_graph && commit->graph_size) {
2703 wmove(view->win, lineno, col);
2704 /* Using waddch() instead of waddnstr() ensures that
2705 * they'll be rendered correctly for the cursor line. */
2706 for (i = 0; i < commit->graph_size; i++)
2707 waddch(view->win, commit->graph[i]);
2709 col += commit->graph_size + 1;
2712 wmove(view->win, lineno, col);
2718 if (type == LINE_CURSOR)
2720 else if (commit->refs[i]->tag)
2721 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2723 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2724 waddstr(view->win, "[");
2725 waddstr(view->win, commit->refs[i]->name);
2726 waddstr(view->win, "]");
2727 if (type != LINE_CURSOR)
2728 wattrset(view->win, A_NORMAL);
2729 waddstr(view->win, " ");
2730 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2731 } while (commit->refs[i++]->next);
2734 if (type != LINE_CURSOR)
2735 wattrset(view->win, get_line_attr(type));
2738 int titlelen = strlen(commit->title);
2740 if (col + titlelen > view->width)
2741 titlelen = view->width - col;
2743 waddnstr(view->win, commit->title, titlelen);
2749 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2751 main_read(struct view *view, char *line)
2753 enum line_type type = get_line_type(line);
2754 struct commit *commit = view->lines
2755 ? view->line[view->lines - 1].data : NULL;
2759 commit = calloc(1, sizeof(struct commit));
2763 line += STRING_SIZE("commit ");
2765 view->line[view->lines++].data = commit;
2766 string_copy(commit->id, line);
2767 commit->refs = get_refs(commit->id);
2768 commit->graph[commit->graph_size++] = ACS_LTEE;
2773 char *ident = line + STRING_SIZE("author ");
2774 char *end = strchr(ident, '<');
2780 char *email = end + 1;
2782 for (; end > ident && isspace(end[-1]); end--) ;
2784 if (end == ident && *email) {
2786 end = strchr(ident, '>');
2787 for (; end > ident && isspace(end[-1]); end--) ;
2792 /* End is NULL or ident meaning there's no author. */
2796 string_copy(commit->author, ident);
2798 /* Parse epoch and timezone */
2800 char *secs = strchr(end + 1, '>');
2804 if (!secs || secs[1] != ' ')
2808 time = (time_t) atol(secs);
2809 zone = strchr(secs, ' ');
2810 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2814 tz = ('0' - zone[1]) * 60 * 60 * 10;
2815 tz += ('0' - zone[2]) * 60 * 60;
2816 tz += ('0' - zone[3]) * 60;
2817 tz += ('0' - zone[4]) * 60;
2824 gmtime_r(&time, &commit->time);
2832 /* Fill in the commit title if it has not already been set. */
2833 if (commit->title[0])
2836 /* Require titles to start with a non-space character at the
2837 * offset used by git log. */
2838 /* FIXME: More gracefull handling of titles; append "..." to
2839 * shortened titles, etc. */
2840 if (strncmp(line, " ", 4) ||
2844 string_copy(commit->title, line + 4);
2851 main_enter(struct view *view, struct line *line)
2853 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2855 open_view(view, REQ_VIEW_DIFF, flags);
2860 main_grep(struct view *view, struct line *line)
2862 struct commit *commit = line->data;
2863 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2864 char buf[DATE_COLS + 1];
2867 for (state = S_TITLE; state < S_END; state++) {
2871 case S_TITLE: text = commit->title; break;
2872 case S_AUTHOR: text = commit->author; break;
2874 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2883 if (regexec(&view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2890 static struct view_ops main_ops = {
2900 * Unicode / UTF-8 handling
2902 * NOTE: Much of the following code for dealing with unicode is derived from
2903 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2904 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2907 /* I've (over)annotated a lot of code snippets because I am not entirely
2908 * confident that the approach taken by this small UTF-8 interface is correct.
2912 unicode_width(unsigned long c)
2915 (c <= 0x115f /* Hangul Jamo */
2918 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2920 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2921 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2922 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2923 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2924 || (c >= 0xffe0 && c <= 0xffe6)
2925 || (c >= 0x20000 && c <= 0x2fffd)
2926 || (c >= 0x30000 && c <= 0x3fffd)))
2932 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2933 * Illegal bytes are set one. */
2934 static const unsigned char utf8_bytes[256] = {
2935 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,
2936 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,
2937 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,
2938 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,
2939 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,
2940 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,
2941 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,
2942 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,
2945 /* Decode UTF-8 multi-byte representation into a unicode character. */
2946 static inline unsigned long
2947 utf8_to_unicode(const char *string, size_t length)
2949 unsigned long unicode;
2953 unicode = string[0];
2956 unicode = (string[0] & 0x1f) << 6;
2957 unicode += (string[1] & 0x3f);
2960 unicode = (string[0] & 0x0f) << 12;
2961 unicode += ((string[1] & 0x3f) << 6);
2962 unicode += (string[2] & 0x3f);
2965 unicode = (string[0] & 0x0f) << 18;
2966 unicode += ((string[1] & 0x3f) << 12);
2967 unicode += ((string[2] & 0x3f) << 6);
2968 unicode += (string[3] & 0x3f);
2971 unicode = (string[0] & 0x0f) << 24;
2972 unicode += ((string[1] & 0x3f) << 18);
2973 unicode += ((string[2] & 0x3f) << 12);
2974 unicode += ((string[3] & 0x3f) << 6);
2975 unicode += (string[4] & 0x3f);
2978 unicode = (string[0] & 0x01) << 30;
2979 unicode += ((string[1] & 0x3f) << 24);
2980 unicode += ((string[2] & 0x3f) << 18);
2981 unicode += ((string[3] & 0x3f) << 12);
2982 unicode += ((string[4] & 0x3f) << 6);
2983 unicode += (string[5] & 0x3f);
2986 die("Invalid unicode length");
2989 /* Invalid characters could return the special 0xfffd value but NUL
2990 * should be just as good. */
2991 return unicode > 0xffff ? 0 : unicode;
2994 /* Calculates how much of string can be shown within the given maximum width
2995 * and sets trimmed parameter to non-zero value if all of string could not be
2998 * Additionally, adds to coloffset how many many columns to move to align with
2999 * the expected position. Takes into account how multi-byte and double-width
3000 * characters will effect the cursor position.
3002 * Returns the number of bytes to output from string to satisfy max_width. */
3004 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3006 const char *start = string;
3007 const char *end = strchr(string, '\0');
3013 while (string < end) {
3014 int c = *(unsigned char *) string;
3015 unsigned char bytes = utf8_bytes[c];
3017 unsigned long unicode;
3019 if (string + bytes > end)
3022 /* Change representation to figure out whether
3023 * it is a single- or double-width character. */
3025 unicode = utf8_to_unicode(string, bytes);
3026 /* FIXME: Graceful handling of invalid unicode character. */
3030 ucwidth = unicode_width(unicode);
3032 if (width > max_width) {
3037 /* The column offset collects the differences between the
3038 * number of bytes encoding a character and the number of
3039 * columns will be used for rendering said character.
3041 * So if some character A is encoded in 2 bytes, but will be
3042 * represented on the screen using only 1 byte this will and up
3043 * adding 1 to the multi-byte column offset.
3045 * Assumes that no double-width character can be encoding in
3046 * less than two bytes. */
3047 if (bytes > ucwidth)
3048 mbwidth += bytes - ucwidth;
3053 *coloffset += mbwidth;
3055 return string - start;
3063 /* Whether or not the curses interface has been initialized. */
3064 static bool cursed = FALSE;
3066 /* The status window is used for polling keystrokes. */
3067 static WINDOW *status_win;
3069 /* Update status and title window. */
3071 report(const char *msg, ...)
3073 static bool empty = TRUE;
3074 struct view *view = display[current_view];
3076 if (!empty || *msg) {
3079 va_start(args, msg);
3082 wmove(status_win, 0, 0);
3084 vwprintw(status_win, msg, args);
3089 wrefresh(status_win);
3094 update_view_title(view);
3095 update_display_cursor();
3098 /* Controls when nodelay should be in effect when polling user input. */
3100 set_nonblocking_input(bool loading)
3102 static unsigned int loading_views;
3104 if ((loading == FALSE && loading_views-- == 1) ||
3105 (loading == TRUE && loading_views++ == 0))
3106 nodelay(status_win, loading);
3114 /* Initialize the curses library */
3115 if (isatty(STDIN_FILENO)) {
3116 cursed = !!initscr();
3118 /* Leave stdin and stdout alone when acting as a pager. */
3119 FILE *io = fopen("/dev/tty", "r+");
3122 die("Failed to open /dev/tty");
3123 cursed = !!newterm(NULL, io, io);
3127 die("Failed to initialize curses");
3129 nonl(); /* Tell curses not to do NL->CR/NL on output */
3130 cbreak(); /* Take input chars one at a time, no wait for \n */
3131 noecho(); /* Don't echo input */
3132 leaveok(stdscr, TRUE);
3137 getmaxyx(stdscr, y, x);
3138 status_win = newwin(1, 0, y - 1, 0);
3140 die("Failed to create status window");
3142 /* Enable keyboard mapping */
3143 keypad(status_win, TRUE);
3144 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3148 read_prompt(const char *prompt)
3150 enum { READING, STOP, CANCEL } status = READING;
3151 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3154 while (status == READING) {
3158 foreach_view (view, i)
3161 report("%s%.*s", prompt, pos, buf);
3162 /* Refresh, accept single keystroke of input */
3163 key = wgetch(status_win);
3168 status = pos ? STOP : CANCEL;
3186 if (pos >= sizeof(buf)) {
3187 report("Input string too long");
3192 buf[pos++] = (char) key;
3196 if (status == CANCEL) {
3197 /* Clear the status window */
3208 * Repository references
3211 static struct ref *refs;
3212 static size_t refs_size;
3214 /* Id <-> ref store */
3215 static struct ref ***id_refs;
3216 static size_t id_refs_size;
3218 static struct ref **
3221 struct ref ***tmp_id_refs;
3222 struct ref **ref_list = NULL;
3223 size_t ref_list_size = 0;
3226 for (i = 0; i < id_refs_size; i++)
3227 if (!strcmp(id, id_refs[i][0]->id))
3230 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3234 id_refs = tmp_id_refs;
3236 for (i = 0; i < refs_size; i++) {
3239 if (strcmp(id, refs[i].id))
3242 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3250 if (ref_list_size > 0)
3251 ref_list[ref_list_size - 1]->next = 1;
3252 ref_list[ref_list_size] = &refs[i];
3254 /* XXX: The properties of the commit chains ensures that we can
3255 * safely modify the shared ref. The repo references will
3256 * always be similar for the same id. */
3257 ref_list[ref_list_size]->next = 0;
3262 id_refs[id_refs_size++] = ref_list;
3268 read_ref(char *id, int idlen, char *name, int namelen)
3273 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3274 /* Commits referenced by tags has "^{}" appended. */
3275 if (name[namelen - 1] != '}')
3278 while (namelen > 0 && name[namelen] != '^')
3282 namelen -= STRING_SIZE("refs/tags/");
3283 name += STRING_SIZE("refs/tags/");
3285 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3286 namelen -= STRING_SIZE("refs/heads/");
3287 name += STRING_SIZE("refs/heads/");
3289 } else if (!strcmp(name, "HEAD")) {
3293 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3297 ref = &refs[refs_size++];
3298 ref->name = malloc(namelen + 1);
3302 strncpy(ref->name, name, namelen);
3303 ref->name[namelen] = 0;
3305 string_copy(ref->id, id);
3313 const char *cmd_env = getenv("TIG_LS_REMOTE");
3314 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3316 return read_properties(popen(cmd, "r"), "\t", read_ref);
3320 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3322 if (!strcmp(name, "i18n.commitencoding"))
3323 string_copy(opt_encoding, value);
3329 load_repo_config(void)
3331 return read_properties(popen("git repo-config --list", "r"),
3332 "=", read_repo_config_option);
3336 read_properties(FILE *pipe, const char *separators,
3337 int (*read_property)(char *, int, char *, int))
3339 char buffer[BUFSIZ];
3346 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3351 name = chomp_string(name);
3352 namelen = strcspn(name, separators);
3354 if (name[namelen]) {
3356 value = chomp_string(name + namelen + 1);
3357 valuelen = strlen(value);
3364 state = read_property(name, namelen, value, valuelen);
3367 if (state != ERR && ferror(pipe))
3380 static void __NORETURN
3383 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3389 static void __NORETURN
3390 die(const char *err, ...)
3396 va_start(args, err);
3397 fputs("tig: ", stderr);
3398 vfprintf(stderr, err, args);
3399 fputs("\n", stderr);
3406 main(int argc, char *argv[])
3409 enum request request;
3412 signal(SIGINT, quit);
3414 if (setlocale(LC_ALL, "")) {
3415 string_copy(opt_codeset, nl_langinfo(CODESET));
3418 if (load_options() == ERR)
3419 die("Failed to load user config.");
3421 /* Load the repo config file so options can be overwritten from
3422 * the command line. */
3423 if (load_repo_config() == ERR)
3424 die("Failed to load repo config.");
3426 if (!parse_options(argc, argv))
3429 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3430 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3431 if (opt_iconv == ICONV_NONE)
3432 die("Failed to initialize character set conversion");
3435 if (load_refs() == ERR)
3436 die("Failed to load refs.");
3438 /* Require a git repository unless when running in pager mode. */
3439 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3440 die("Not a git repository");
3442 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3443 view->cmd_env = getenv(view->cmd_env);
3445 request = opt_request;
3449 while (view_driver(display[current_view], request)) {
3453 foreach_view (view, i)
3456 /* Refresh, accept single keystroke of input */
3457 key = wgetch(status_win);
3459 request = get_keybinding(display[current_view]->keymap, key);
3461 /* Some low-level request handling. This keeps access to
3462 * status_win restricted. */
3466 char *cmd = read_prompt(":");
3468 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3469 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3470 opt_request = REQ_VIEW_DIFF;
3472 opt_request = REQ_VIEW_PAGER;
3481 case REQ_SEARCH_BACK:
3483 const char *prompt = request == REQ_SEARCH
3485 char *search = read_prompt(prompt);
3488 string_copy(opt_search, search);
3493 case REQ_SCREEN_RESIZE:
3497 getmaxyx(stdscr, height, width);
3499 /* Resize the status view and let the view driver take
3500 * care of resizing the displayed views. */
3501 wresize(status_win, 1, width);
3502 mvwin(status_win, height - 1, 0);
3503 wrefresh(status_win);