1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #define VERSION "tig-0.4.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
64 /* This color name can be used to refer to the default term colors. */
65 #define COLOR_DEFAULT (-1)
67 #define ICONV_NONE ((iconv_t) -1)
69 /* The format and size of the date column in the main view. */
70 #define DATE_FORMAT "%Y-%m-%d %H:%M"
71 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
73 #define AUTHOR_COLS 20
75 /* The default interval between line numbers. */
76 #define NUMBER_INTERVAL 1
80 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
82 #define TIG_LS_REMOTE \
83 "git ls-remote . 2>/dev/null"
85 #define TIG_DIFF_CMD \
86 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
89 "git log --cc --stat -n100 %s 2>/dev/null"
91 #define TIG_MAIN_CMD \
92 "git log --topo-order --pretty=raw %s 2>/dev/null"
94 #define TIG_TREE_CMD \
97 #define TIG_BLOB_CMD \
98 "git cat-file blob %s"
100 /* XXX: Needs to be defined to the empty string. */
101 #define TIG_HELP_CMD ""
102 #define TIG_PAGER_CMD ""
104 /* Some ascii-shorthands fitted into the ncurses namespace. */
106 #define KEY_RETURN '\r'
111 char *name; /* Ref name; tag or head names are shortened. */
112 char id[41]; /* Commit SHA1 ID */
113 unsigned int tag:1; /* Is it a tag? */
114 unsigned int next:1; /* For ref lists: are there more refs? */
117 static struct ref **get_refs(char *id);
126 set_from_int_map(struct int_map *map, size_t map_size,
127 int *value, const char *name, int namelen)
132 for (i = 0; i < map_size; i++)
133 if (namelen == map[i].namelen &&
134 !strncasecmp(name, map[i].name, namelen)) {
135 *value = map[i].value;
148 string_ncopy(char *dst, const char *src, size_t dstlen)
150 strncpy(dst, src, dstlen - 1);
155 /* Shorthand for safely copying into a fixed buffer. */
156 #define string_copy(dst, src) \
157 string_ncopy(dst, src, sizeof(dst))
160 chomp_string(char *name)
164 while (isspace(*name))
167 namelen = strlen(name) - 1;
168 while (namelen > 0 && isspace(name[namelen]))
175 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
178 size_t pos = bufpos ? *bufpos : 0;
181 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
187 return pos >= bufsize ? FALSE : TRUE;
190 #define string_format(buf, fmt, args...) \
191 string_nformat(buf, sizeof(buf), NULL, fmt, args)
193 #define string_format_from(buf, from, fmt, args...) \
194 string_nformat(buf, sizeof(buf), from, fmt, args)
197 string_enum_compare(const char *str1, const char *str2, int len)
201 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
203 /* Diff-Header == DIFF_HEADER */
204 for (i = 0; i < len; i++) {
205 if (toupper(str1[i]) == toupper(str2[i]))
208 if (string_enum_sep(str1[i]) &&
209 string_enum_sep(str2[i]))
212 return str1[i] - str2[i];
220 * NOTE: The following is a slightly modified copy of the git project's shell
221 * quoting routines found in the quote.c file.
223 * Help to copy the thing properly quoted for the shell safety. any single
224 * quote is replaced with '\'', any exclamation point is replaced with '\!',
225 * and the whole thing is enclosed in a
228 * original sq_quote result
229 * name ==> name ==> 'name'
230 * a b ==> a b ==> 'a b'
231 * a'b ==> a'\''b ==> 'a'\''b'
232 * a!b ==> a'\!'b ==> 'a'\!'b'
236 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
240 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
243 while ((c = *src++)) {
244 if (c == '\'' || c == '!') {
264 /* XXX: Keep the view request first and in sync with views[]. */ \
265 REQ_GROUP("View switching") \
266 REQ_(VIEW_MAIN, "Show main view"), \
267 REQ_(VIEW_DIFF, "Show diff view"), \
268 REQ_(VIEW_LOG, "Show log view"), \
269 REQ_(VIEW_TREE, "Show tree view"), \
270 REQ_(VIEW_BLOB, "Show blob view"), \
271 REQ_(VIEW_HELP, "Show help page"), \
272 REQ_(VIEW_PAGER, "Show pager view"), \
274 REQ_GROUP("View manipulation") \
275 REQ_(ENTER, "Enter current line and scroll"), \
276 REQ_(NEXT, "Move to next"), \
277 REQ_(PREVIOUS, "Move to previous"), \
278 REQ_(VIEW_NEXT, "Move focus to next view"), \
279 REQ_(VIEW_CLOSE, "Close the current view"), \
280 REQ_(QUIT, "Close all views and quit"), \
282 REQ_GROUP("Cursor navigation") \
283 REQ_(MOVE_UP, "Move cursor one line up"), \
284 REQ_(MOVE_DOWN, "Move cursor one line down"), \
285 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
286 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
287 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
288 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
290 REQ_GROUP("Scrolling") \
291 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
292 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
293 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
294 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
296 REQ_GROUP("Searching") \
297 REQ_(SEARCH, "Search the view"), \
298 REQ_(SEARCH_BACK, "Search backwards in the view"), \
299 REQ_(FIND_NEXT, "Find next search match"), \
300 REQ_(FIND_PREV, "Find previous search match"), \
303 REQ_(NONE, "Do nothing"), \
304 REQ_(PROMPT, "Bring up the prompt"), \
305 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
306 REQ_(SCREEN_RESIZE, "Resize the screen"), \
307 REQ_(SHOW_VERSION, "Show version information"), \
308 REQ_(STOP_LOADING, "Stop all loading views"), \
309 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
310 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
313 /* User action requests. */
315 #define REQ_GROUP(help)
316 #define REQ_(req, help) REQ_##req
318 /* Offset all requests to avoid conflicts with ncurses getch values. */
319 REQ_OFFSET = KEY_MAX + 1,
327 struct request_info {
328 enum request request;
334 static struct request_info req_info[] = {
335 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
336 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
343 get_request(const char *name)
345 int namelen = strlen(name);
348 for (i = 0; i < ARRAY_SIZE(req_info); i++)
349 if (req_info[i].namelen == namelen &&
350 !string_enum_compare(req_info[i].name, name, namelen))
351 return req_info[i].request;
361 static const char usage[] =
362 VERSION " (" __DATE__ ")\n"
364 "Usage: tig [options]\n"
365 " or: tig [options] [--] [git log options]\n"
366 " or: tig [options] log [git log options]\n"
367 " or: tig [options] diff [git diff options]\n"
368 " or: tig [options] show [git show options]\n"
369 " or: tig [options] < [git command output]\n"
372 " -l Start up in log view\n"
373 " -d Start up in diff view\n"
374 " -n[I], --line-number[=I] Show line numbers with given interval\n"
375 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
376 " -- Mark end of tig options\n"
377 " -v, --version Show version and exit\n"
378 " -h, --help Show help message and exit\n";
380 /* Option and state variables. */
381 static bool opt_line_number = FALSE;
382 static bool opt_rev_graph = TRUE;
383 static int opt_num_interval = NUMBER_INTERVAL;
384 static int opt_tab_size = TABSIZE;
385 static enum request opt_request = REQ_VIEW_MAIN;
386 static char opt_cmd[SIZEOF_STR] = "";
387 static char opt_path[SIZEOF_STR] = "";
388 static FILE *opt_pipe = NULL;
389 static char opt_encoding[20] = "UTF-8";
390 static bool opt_utf8 = TRUE;
391 static char opt_codeset[20] = "UTF-8";
392 static iconv_t opt_iconv = ICONV_NONE;
393 static char opt_search[SIZEOF_STR] = "";
401 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
411 int namelen = strlen(name);
415 if (strncmp(opt, name, namelen))
418 if (opt[namelen] == '=')
419 value = opt + namelen + 1;
422 if (!short_name || opt[1] != short_name)
427 va_start(args, type);
428 if (type == OPT_INT) {
429 number = va_arg(args, int *);
431 *number = atoi(value);
438 /* Returns the index of log or diff command or -1 to exit. */
440 parse_options(int argc, char *argv[])
444 for (i = 1; i < argc; i++) {
447 if (!strcmp(opt, "-l")) {
448 opt_request = REQ_VIEW_LOG;
452 if (!strcmp(opt, "-d")) {
453 opt_request = REQ_VIEW_DIFF;
457 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
458 opt_line_number = TRUE;
462 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
463 opt_tab_size = MIN(opt_tab_size, TABSIZE);
467 if (check_option(opt, 'v', "version", OPT_NONE)) {
468 printf("tig version %s\n", VERSION);
472 if (check_option(opt, 'h', "help", OPT_NONE)) {
477 if (!strcmp(opt, "--")) {
482 if (!strcmp(opt, "log") ||
483 !strcmp(opt, "diff") ||
484 !strcmp(opt, "show")) {
485 opt_request = opt[0] == 'l'
486 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
490 if (opt[0] && opt[0] != '-')
493 die("unknown option '%s'\n\n%s", opt, usage);
496 if (!isatty(STDIN_FILENO)) {
497 opt_request = REQ_VIEW_PAGER;
500 } else if (i < argc) {
503 if (opt_request == REQ_VIEW_MAIN)
504 /* XXX: This is vulnerable to the user overriding
505 * options required for the main view parser. */
506 string_copy(opt_cmd, "git log --stat --pretty=raw");
508 string_copy(opt_cmd, "git");
509 buf_size = strlen(opt_cmd);
511 while (buf_size < sizeof(opt_cmd) && i < argc) {
512 opt_cmd[buf_size++] = ' ';
513 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
516 if (buf_size >= sizeof(opt_cmd))
517 die("command too long");
519 opt_cmd[buf_size] = 0;
523 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
531 * Line-oriented content detection.
535 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
536 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
537 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
538 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
539 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
540 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
541 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
542 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
543 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
544 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
545 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
546 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
547 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
549 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
550 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
551 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
552 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
556 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
557 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
558 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
560 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
561 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
563 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
564 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
565 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
566 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
567 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
568 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
569 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
570 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
571 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
572 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
573 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
574 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
577 #define LINE(type, line, fg, bg, attr) \
584 const char *name; /* Option name. */
585 int namelen; /* Size of option name. */
586 const char *line; /* The start of line to match. */
587 int linelen; /* Size of string to match. */
588 int fg, bg, attr; /* Color and text attributes for the lines. */
591 static struct line_info line_info[] = {
592 #define LINE(type, line, fg, bg, attr) \
593 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
598 static enum line_type
599 get_line_type(char *line)
601 int linelen = strlen(line);
604 for (type = 0; type < ARRAY_SIZE(line_info); type++)
605 /* Case insensitive search matches Signed-off-by lines better. */
606 if (linelen >= line_info[type].linelen &&
607 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
614 get_line_attr(enum line_type type)
616 assert(type < ARRAY_SIZE(line_info));
617 return COLOR_PAIR(type) | line_info[type].attr;
620 static struct line_info *
621 get_line_info(char *name, int namelen)
625 for (type = 0; type < ARRAY_SIZE(line_info); type++)
626 if (namelen == line_info[type].namelen &&
627 !string_enum_compare(line_info[type].name, name, namelen))
628 return &line_info[type];
636 int default_bg = COLOR_BLACK;
637 int default_fg = COLOR_WHITE;
642 if (use_default_colors() != ERR) {
647 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
648 struct line_info *info = &line_info[type];
649 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
650 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
652 init_pair(type, fg, bg);
658 void *data; /* User data */
668 enum request request;
669 struct keybinding *next;
672 static struct keybinding default_keybindings[] = {
674 { 'm', REQ_VIEW_MAIN },
675 { 'd', REQ_VIEW_DIFF },
676 { 'l', REQ_VIEW_LOG },
677 { 't', REQ_VIEW_TREE },
678 { 'b', REQ_VIEW_BLOB },
679 { 'p', REQ_VIEW_PAGER },
680 { 'h', REQ_VIEW_HELP },
682 /* View manipulation */
683 { 'q', REQ_VIEW_CLOSE },
684 { KEY_TAB, REQ_VIEW_NEXT },
685 { KEY_RETURN, REQ_ENTER },
686 { KEY_UP, REQ_PREVIOUS },
687 { KEY_DOWN, REQ_NEXT },
689 /* Cursor navigation */
690 { 'k', REQ_MOVE_UP },
691 { 'j', REQ_MOVE_DOWN },
692 { KEY_HOME, REQ_MOVE_FIRST_LINE },
693 { KEY_END, REQ_MOVE_LAST_LINE },
694 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
695 { ' ', REQ_MOVE_PAGE_DOWN },
696 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
697 { 'b', REQ_MOVE_PAGE_UP },
698 { '-', REQ_MOVE_PAGE_UP },
701 { KEY_IC, REQ_SCROLL_LINE_UP },
702 { KEY_DC, REQ_SCROLL_LINE_DOWN },
703 { 'w', REQ_SCROLL_PAGE_UP },
704 { 's', REQ_SCROLL_PAGE_DOWN },
708 { '?', REQ_SEARCH_BACK },
709 { 'n', REQ_FIND_NEXT },
710 { 'N', REQ_FIND_PREV },
714 { 'z', REQ_STOP_LOADING },
715 { 'v', REQ_SHOW_VERSION },
716 { 'r', REQ_SCREEN_REDRAW },
717 { '.', REQ_TOGGLE_LINENO },
718 { 'g', REQ_TOGGLE_REV_GRAPH },
721 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
724 /* Using the ncurses SIGWINCH handler. */
725 { KEY_RESIZE, REQ_SCREEN_RESIZE },
728 #define KEYMAP_INFO \
739 #define KEYMAP_(name) KEYMAP_##name
744 static struct int_map keymap_table[] = {
745 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
750 #define set_keymap(map, name) \
751 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
753 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
756 add_keybinding(enum keymap keymap, enum request request, int key)
758 struct keybinding *keybinding;
760 keybinding = calloc(1, sizeof(*keybinding));
762 die("Failed to allocate keybinding");
764 keybinding->alias = key;
765 keybinding->request = request;
766 keybinding->next = keybindings[keymap];
767 keybindings[keymap] = keybinding;
770 /* Looks for a key binding first in the given map, then in the generic map, and
771 * lastly in the default keybindings. */
773 get_keybinding(enum keymap keymap, int key)
775 struct keybinding *kbd;
778 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
779 if (kbd->alias == key)
782 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
783 if (kbd->alias == key)
786 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
787 if (default_keybindings[i].alias == key)
788 return default_keybindings[i].request;
790 return (enum request) key;
799 static struct key key_table[] = {
800 { "Enter", KEY_RETURN },
802 { "Backspace", KEY_BACKSPACE },
804 { "Escape", KEY_ESC },
805 { "Left", KEY_LEFT },
806 { "Right", KEY_RIGHT },
808 { "Down", KEY_DOWN },
809 { "Insert", KEY_IC },
810 { "Delete", KEY_DC },
812 { "Home", KEY_HOME },
814 { "PageUp", KEY_PPAGE },
815 { "PageDown", KEY_NPAGE },
825 { "F10", KEY_F(10) },
826 { "F11", KEY_F(11) },
827 { "F12", KEY_F(12) },
831 get_key_value(const char *name)
835 for (i = 0; i < ARRAY_SIZE(key_table); i++)
836 if (!strcasecmp(key_table[i].name, name))
837 return key_table[i].value;
839 if (strlen(name) == 1 && isprint(*name))
846 get_key(enum request request)
848 static char buf[BUFSIZ];
849 static char key_char[] = "'X'";
856 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
857 struct keybinding *keybinding = &default_keybindings[i];
861 if (keybinding->request != request)
864 for (key = 0; key < ARRAY_SIZE(key_table); key++)
865 if (key_table[key].value == keybinding->alias)
866 seq = key_table[key].name;
869 keybinding->alias < 127 &&
870 isprint(keybinding->alias)) {
871 key_char[1] = (char) keybinding->alias;
878 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
879 return "Too many keybindings!";
888 * User config file handling.
891 static struct int_map color_map[] = {
892 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
904 #define set_color(color, name) \
905 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
907 static struct int_map attr_map[] = {
908 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
918 #define set_attribute(attr, name) \
919 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
921 static int config_lineno;
922 static bool config_errors;
923 static char *config_msg;
925 /* Wants: object fgcolor bgcolor [attr] */
927 option_color_command(int argc, char *argv[])
929 struct line_info *info;
931 if (argc != 3 && argc != 4) {
932 config_msg = "Wrong number of arguments given to color command";
936 info = get_line_info(argv[0], strlen(argv[0]));
938 config_msg = "Unknown color name";
942 if (set_color(&info->fg, argv[1]) == ERR ||
943 set_color(&info->bg, argv[2]) == ERR) {
944 config_msg = "Unknown color";
948 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
949 config_msg = "Unknown attribute";
956 /* Wants: name = value */
958 option_set_command(int argc, char *argv[])
961 config_msg = "Wrong number of arguments given to set command";
965 if (strcmp(argv[1], "=")) {
966 config_msg = "No value assigned";
970 if (!strcmp(argv[0], "show-rev-graph")) {
971 opt_rev_graph = (!strcmp(argv[2], "1") ||
972 !strcmp(argv[2], "true") ||
973 !strcmp(argv[2], "yes"));
977 if (!strcmp(argv[0], "line-number-interval")) {
978 opt_num_interval = atoi(argv[2]);
982 if (!strcmp(argv[0], "tab-size")) {
983 opt_tab_size = atoi(argv[2]);
987 if (!strcmp(argv[0], "commit-encoding")) {
989 int delimiter = *arg;
995 for (arg++, i = 0; arg[i]; i++)
996 if (arg[i] == delimiter) {
1001 string_copy(opt_encoding, arg);
1006 config_msg = "Unknown variable name";
1010 /* Wants: mode request key */
1012 option_bind_command(int argc, char *argv[])
1014 enum request request;
1019 config_msg = "Wrong number of arguments given to bind command";
1023 if (set_keymap(&keymap, argv[0]) == ERR) {
1024 config_msg = "Unknown key map";
1028 key = get_key_value(argv[1]);
1030 config_msg = "Unknown key";
1034 request = get_request(argv[2]);
1035 if (request == REQ_UNKNOWN) {
1036 config_msg = "Unknown request name";
1040 add_keybinding(keymap, request, key);
1046 set_option(char *opt, char *value)
1053 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1054 argv[argc++] = value;
1061 while (isspace(*value))
1065 if (!strcmp(opt, "color"))
1066 return option_color_command(argc, argv);
1068 if (!strcmp(opt, "set"))
1069 return option_set_command(argc, argv);
1071 if (!strcmp(opt, "bind"))
1072 return option_bind_command(argc, argv);
1074 config_msg = "Unknown option command";
1079 read_option(char *opt, int optlen, char *value, int valuelen)
1084 config_msg = "Internal error";
1086 /* Check for comment markers, since read_properties() will
1087 * only ensure opt and value are split at first " \t". */
1088 optlen = strcspn(opt, "#");
1092 if (opt[optlen] != 0) {
1093 config_msg = "No option value";
1097 /* Look for comment endings in the value. */
1098 int len = strcspn(value, "#");
1100 if (len < valuelen) {
1102 value[valuelen] = 0;
1105 status = set_option(opt, value);
1108 if (status == ERR) {
1109 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1110 config_lineno, optlen, opt, config_msg);
1111 config_errors = TRUE;
1114 /* Always keep going if errors are encountered. */
1121 char *home = getenv("HOME");
1122 char buf[SIZEOF_STR];
1126 config_errors = FALSE;
1128 if (!home || !string_format(buf, "%s/.tigrc", home))
1131 /* It's ok that the file doesn't exist. */
1132 file = fopen(buf, "r");
1136 if (read_properties(file, " \t", read_option) == ERR ||
1137 config_errors == TRUE)
1138 fprintf(stderr, "Errors while loading %s.\n", buf);
1151 /* The display array of active views and the index of the current view. */
1152 static struct view *display[2];
1153 static unsigned int current_view;
1155 #define foreach_displayed_view(view, i) \
1156 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1158 #define displayed_views() (display[1] != NULL ? 2 : 1)
1160 /* Current head and commit ID */
1161 static char ref_blob[SIZEOF_REF] = "";
1162 static char ref_commit[SIZEOF_REF] = "HEAD";
1163 static char ref_head[SIZEOF_REF] = "HEAD";
1166 const char *name; /* View name */
1167 const char *cmd_fmt; /* Default command line format */
1168 const char *cmd_env; /* Command line set via environment */
1169 const char *id; /* Points to either of ref_{head,commit,blob} */
1171 struct view_ops *ops; /* View operations */
1173 enum keymap keymap; /* What keymap does this view have */
1175 char cmd[SIZEOF_STR]; /* Command buffer */
1176 char ref[SIZEOF_REF]; /* Hovered commit reference */
1177 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1179 int height, width; /* The width and height of the main window */
1180 WINDOW *win; /* The main window */
1181 WINDOW *title; /* The title window living below the main window */
1184 unsigned long offset; /* Offset of the window top */
1185 unsigned long lineno; /* Current line number */
1188 char grep[SIZEOF_STR]; /* Search string */
1189 regex_t regex; /* Pre-compiled regex */
1191 /* If non-NULL, points to the view that opened this view. If this view
1192 * is closed tig will switch back to the parent view. */
1193 struct view *parent;
1196 unsigned long lines; /* Total number of lines */
1197 struct line *line; /* Line index */
1198 unsigned long line_size;/* Total number of allocated lines */
1199 unsigned int digits; /* Number of digits in the lines member. */
1207 /* What type of content being displayed. Used in the title bar. */
1209 /* Draw one line; @lineno must be < view->height. */
1210 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1211 /* Read one line; updates view->line. */
1212 bool (*read)(struct view *view, char *data);
1213 /* Depending on view, change display based on current line. */
1214 bool (*enter)(struct view *view, struct line *line);
1215 /* Search for regex in a line. */
1216 bool (*grep)(struct view *view, struct line *line);
1219 static struct view_ops pager_ops;
1220 static struct view_ops main_ops;
1221 static struct view_ops tree_ops;
1222 static struct view_ops blob_ops;
1224 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1225 { name, cmd, #env, ref, ops, map}
1227 #define VIEW_(id, name, ops, ref) \
1228 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1231 static struct view views[] = {
1232 VIEW_(MAIN, "main", &main_ops, ref_head),
1233 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1234 VIEW_(LOG, "log", &pager_ops, ref_head),
1235 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1236 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1237 VIEW_(HELP, "help", &pager_ops, "static"),
1238 VIEW_(PAGER, "pager", &pager_ops, "static"),
1241 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1243 #define foreach_view(view, i) \
1244 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1246 #define view_is_displayed(view) \
1247 (view == display[0] || view == display[1])
1250 draw_view_line(struct view *view, unsigned int lineno)
1252 assert(view_is_displayed(view));
1254 if (view->offset + lineno >= view->lines)
1257 return view->ops->draw(view, &view->line[view->offset + lineno], lineno);
1261 redraw_view_from(struct view *view, int lineno)
1263 assert(0 <= lineno && lineno < view->height);
1265 for (; lineno < view->height; lineno++) {
1266 if (!draw_view_line(view, lineno))
1270 redrawwin(view->win);
1271 wrefresh(view->win);
1275 redraw_view(struct view *view)
1278 redraw_view_from(view, 0);
1283 update_view_title(struct view *view)
1285 assert(view_is_displayed(view));
1287 if (view == display[current_view])
1288 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1290 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1292 werase(view->title);
1293 wmove(view->title, 0, 0);
1296 wprintw(view->title, "[%s] %s", view->name, view->ref);
1298 wprintw(view->title, "[%s]", view->name);
1300 if (view->lines || view->pipe) {
1301 unsigned int view_lines = view->offset + view->height;
1302 unsigned int lines = view->lines
1303 ? MIN(view_lines, view->lines) * 100 / view->lines
1306 wprintw(view->title, " - %s %d of %d (%d%%)",
1314 time_t secs = time(NULL) - view->start_time;
1316 /* Three git seconds are a long time ... */
1318 wprintw(view->title, " %lds", secs);
1321 wmove(view->title, 0, view->width - 1);
1322 wrefresh(view->title);
1326 resize_display(void)
1329 struct view *base = display[0];
1330 struct view *view = display[1] ? display[1] : display[0];
1332 /* Setup window dimensions */
1334 getmaxyx(stdscr, base->height, base->width);
1336 /* Make room for the status window. */
1340 /* Horizontal split. */
1341 view->width = base->width;
1342 view->height = SCALE_SPLIT_VIEW(base->height);
1343 base->height -= view->height;
1345 /* Make room for the title bar. */
1349 /* Make room for the title bar. */
1354 foreach_displayed_view (view, i) {
1356 view->win = newwin(view->height, 0, offset, 0);
1358 die("Failed to create %s view", view->name);
1360 scrollok(view->win, TRUE);
1362 view->title = newwin(1, 0, offset + view->height, 0);
1364 die("Failed to create title window");
1367 wresize(view->win, view->height, view->width);
1368 mvwin(view->win, offset, 0);
1369 mvwin(view->title, offset + view->height, 0);
1372 offset += view->height + 1;
1377 redraw_display(void)
1382 foreach_displayed_view (view, i) {
1384 update_view_title(view);
1389 update_display_cursor(void)
1391 struct view *view = display[current_view];
1393 /* Move the cursor to the right-most column of the cursor line.
1395 * XXX: This could turn out to be a bit expensive, but it ensures that
1396 * the cursor does not jump around. */
1398 wmove(view->win, view->lineno - view->offset, view->width - 1);
1399 wrefresh(view->win);
1407 /* Scrolling backend */
1409 do_scroll_view(struct view *view, int lines, bool redraw)
1411 assert(view_is_displayed(view));
1413 /* The rendering expects the new offset. */
1414 view->offset += lines;
1416 assert(0 <= view->offset && view->offset < view->lines);
1419 /* Redraw the whole screen if scrolling is pointless. */
1420 if (view->height < ABS(lines)) {
1424 int line = lines > 0 ? view->height - lines : 0;
1425 int end = line + ABS(lines);
1427 wscrl(view->win, lines);
1429 for (; line < end; line++) {
1430 if (!draw_view_line(view, line))
1435 /* Move current line into the view. */
1436 if (view->lineno < view->offset) {
1437 view->lineno = view->offset;
1438 draw_view_line(view, 0);
1440 } else if (view->lineno >= view->offset + view->height) {
1441 if (view->lineno == view->offset + view->height) {
1442 /* Clear the hidden line so it doesn't show if the view
1443 * is scrolled up. */
1444 wmove(view->win, view->height, 0);
1445 wclrtoeol(view->win);
1447 view->lineno = view->offset + view->height - 1;
1448 draw_view_line(view, view->lineno - view->offset);
1451 assert(view->offset <= view->lineno && view->lineno < view->lines);
1456 redrawwin(view->win);
1457 wrefresh(view->win);
1461 /* Scroll frontend */
1463 scroll_view(struct view *view, enum request request)
1468 case REQ_SCROLL_PAGE_DOWN:
1469 lines = view->height;
1470 case REQ_SCROLL_LINE_DOWN:
1471 if (view->offset + lines > view->lines)
1472 lines = view->lines - view->offset;
1474 if (lines == 0 || view->offset + view->height >= view->lines) {
1475 report("Cannot scroll beyond the last line");
1480 case REQ_SCROLL_PAGE_UP:
1481 lines = view->height;
1482 case REQ_SCROLL_LINE_UP:
1483 if (lines > view->offset)
1484 lines = view->offset;
1487 report("Cannot scroll beyond the first line");
1495 die("request %d not handled in switch", request);
1498 do_scroll_view(view, lines, TRUE);
1503 move_view(struct view *view, enum request request, bool redraw)
1508 case REQ_MOVE_FIRST_LINE:
1509 steps = -view->lineno;
1512 case REQ_MOVE_LAST_LINE:
1513 steps = view->lines - view->lineno - 1;
1516 case REQ_MOVE_PAGE_UP:
1517 steps = view->height > view->lineno
1518 ? -view->lineno : -view->height;
1521 case REQ_MOVE_PAGE_DOWN:
1522 steps = view->lineno + view->height >= view->lines
1523 ? view->lines - view->lineno - 1 : view->height;
1535 die("request %d not handled in switch", request);
1538 if (steps <= 0 && view->lineno == 0) {
1539 report("Cannot move beyond the first line");
1542 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1543 report("Cannot move beyond the last line");
1547 /* Move the current line */
1548 view->lineno += steps;
1549 assert(0 <= view->lineno && view->lineno < view->lines);
1551 /* Repaint the old "current" line if we be scrolling */
1552 if (ABS(steps) < view->height) {
1553 int prev_lineno = view->lineno - steps - view->offset;
1555 wmove(view->win, prev_lineno, 0);
1556 wclrtoeol(view->win);
1557 draw_view_line(view, prev_lineno);
1560 /* Check whether the view needs to be scrolled */
1561 if (view->lineno < view->offset ||
1562 view->lineno >= view->offset + view->height) {
1563 if (steps < 0 && -steps > view->offset) {
1564 steps = -view->offset;
1566 } else if (steps > 0) {
1567 if (view->lineno == view->lines - 1 &&
1568 view->lines > view->height) {
1569 steps = view->lines - view->offset - 1;
1570 if (steps >= view->height)
1571 steps -= view->height - 1;
1575 do_scroll_view(view, steps, redraw);
1579 /* Draw the current line */
1580 draw_view_line(view, view->lineno - view->offset);
1585 redrawwin(view->win);
1586 wrefresh(view->win);
1595 static void search_view(struct view *view, enum request request, const char *search);
1598 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1600 assert(view_is_displayed(view));
1602 if (!view->ops->grep(view, line))
1605 if (lineno - view->offset >= view->height) {
1606 view->offset = lineno;
1607 view->lineno = lineno;
1611 unsigned long old_lineno = view->lineno - view->offset;
1613 view->lineno = lineno;
1615 wmove(view->win, old_lineno, 0);
1616 wclrtoeol(view->win);
1617 draw_view_line(view, old_lineno);
1619 draw_view_line(view, view->lineno - view->offset);
1620 redrawwin(view->win);
1621 wrefresh(view->win);
1624 report("Line %ld matches '%s'", lineno + 1, view->grep);
1629 find_next(struct view *view, enum request request)
1631 unsigned long lineno = view->lineno;
1636 report("No previous search");
1638 search_view(view, request, opt_search);
1648 case REQ_SEARCH_BACK:
1657 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1658 lineno += direction;
1660 /* Note, lineno is unsigned long so will wrap around in which case it
1661 * will become bigger than view->lines. */
1662 for (; lineno < view->lines; lineno += direction) {
1663 struct line *line = &view->line[lineno];
1665 if (find_next_line(view, lineno, line))
1669 report("No match found for '%s'", view->grep);
1673 search_view(struct view *view, enum request request, const char *search)
1678 regfree(&view->regex);
1682 regex_err = regcomp(&view->regex, search, REG_EXTENDED);
1683 if (regex_err != 0) {
1684 char buf[SIZEOF_STR] = "unknown error";
1686 regerror(regex_err, &view->regex, buf, sizeof(buf));
1687 report("Search failed: %s", buf);
1691 string_copy(view->grep, search);
1693 find_next(view, request);
1697 * Incremental updating
1701 end_update(struct view *view)
1705 set_nonblocking_input(FALSE);
1706 if (view->pipe == stdin)
1714 begin_update(struct view *view)
1716 const char *id = view->id;
1722 string_copy(view->cmd, opt_cmd);
1724 /* When running random commands, the view ref could have become
1725 * invalid so clear it. */
1728 } else if (view == VIEW(REQ_VIEW_TREE)) {
1729 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1731 if (strcmp(view->vid, view->id))
1734 if (snprintf(view->cmd, sizeof(view->cmd), format, id, opt_path)
1735 >= sizeof(view->cmd))
1739 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1741 if (!string_format(view->cmd, format, id, id, id, id, id))
1745 /* Special case for the pager view. */
1747 view->pipe = opt_pipe;
1750 view->pipe = popen(view->cmd, "r");
1756 set_nonblocking_input(TRUE);
1761 string_copy(view->vid, id);
1766 for (i = 0; i < view->lines; i++)
1767 if (view->line[i].data)
1768 free(view->line[i].data);
1774 view->start_time = time(NULL);
1779 static struct line *
1780 realloc_lines(struct view *view, size_t line_size)
1782 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1788 view->line_size = line_size;
1793 update_view(struct view *view)
1795 char in_buffer[BUFSIZ];
1796 char out_buffer[BUFSIZ * 2];
1798 /* The number of lines to read. If too low it will cause too much
1799 * redrawing (and possible flickering), if too high responsiveness
1801 unsigned long lines = view->height;
1802 int redraw_from = -1;
1807 /* Only redraw if lines are visible. */
1808 if (view->offset + view->height >= view->lines)
1809 redraw_from = view->lines - view->offset;
1811 /* FIXME: This is probably not perfect for backgrounded views. */
1812 if (!realloc_lines(view, view->lines + lines))
1815 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1816 size_t linelen = strlen(line);
1819 line[linelen - 1] = 0;
1821 if (opt_iconv != ICONV_NONE) {
1823 size_t inlen = linelen;
1825 char *outbuf = out_buffer;
1826 size_t outlen = sizeof(out_buffer);
1830 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1831 if (ret != (size_t) -1) {
1833 linelen = strlen(out_buffer);
1837 if (!view->ops->read(view, line))
1847 lines = view->lines;
1848 for (digits = 0; lines; digits++)
1851 /* Keep the displayed view in sync with line number scaling. */
1852 if (digits != view->digits) {
1853 view->digits = digits;
1858 if (!view_is_displayed(view))
1861 if (view == VIEW(REQ_VIEW_TREE)) {
1862 /* Clear the view and redraw everything since the tree sorting
1863 * might have rearranged things. */
1866 } else if (redraw_from >= 0) {
1867 /* If this is an incremental update, redraw the previous line
1868 * since for commits some members could have changed when
1869 * loading the main view. */
1870 if (redraw_from > 0)
1873 /* Incrementally draw avoids flickering. */
1874 redraw_view_from(view, redraw_from);
1877 /* Update the title _after_ the redraw so that if the redraw picks up a
1878 * commit reference in view->ref it'll be available here. */
1879 update_view_title(view);
1882 if (ferror(view->pipe)) {
1883 report("Failed to read: %s", strerror(errno));
1886 } else if (feof(view->pipe)) {
1894 report("Allocation failure");
1906 static void open_help_view(struct view *view)
1909 int lines = ARRAY_SIZE(req_info) + 2;
1912 if (view->lines > 0)
1915 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1916 if (!req_info[i].request)
1919 view->line = calloc(lines, sizeof(*view->line));
1921 report("Allocation failure");
1925 view->ops->read(view, "Quick reference for tig keybindings:");
1927 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1930 if (!req_info[i].request) {
1931 view->ops->read(view, "");
1932 view->ops->read(view, req_info[i].help);
1936 key = get_key(req_info[i].request);
1937 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1940 view->ops->read(view, buf);
1945 OPEN_DEFAULT = 0, /* Use default view switching. */
1946 OPEN_SPLIT = 1, /* Split current view. */
1947 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1948 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1952 open_view(struct view *prev, enum request request, enum open_flags flags)
1954 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1955 bool split = !!(flags & OPEN_SPLIT);
1956 bool reload = !!(flags & OPEN_RELOAD);
1957 struct view *view = VIEW(request);
1958 int nviews = displayed_views();
1959 struct view *base_view = display[0];
1961 if (view == prev && nviews == 1 && !reload) {
1962 report("Already in %s view", view->name);
1966 if (view == VIEW(REQ_VIEW_HELP)) {
1967 open_help_view(view);
1969 } else if ((reload || strcmp(view->vid, view->id)) &&
1970 !begin_update(view)) {
1971 report("Failed to load %s view", view->name);
1980 /* Maximize the current view. */
1981 memset(display, 0, sizeof(display));
1983 display[current_view] = view;
1986 /* Resize the view when switching between split- and full-screen,
1987 * or when switching between two different full-screen views. */
1988 if (nviews != displayed_views() ||
1989 (nviews == 1 && base_view != display[0]))
1992 if (split && prev->lineno - prev->offset >= prev->height) {
1993 /* Take the title line into account. */
1994 int lines = prev->lineno - prev->offset - prev->height + 1;
1996 /* Scroll the view that was split if the current line is
1997 * outside the new limited view. */
1998 do_scroll_view(prev, lines, TRUE);
2001 if (prev && view != prev) {
2002 if (split && !backgrounded) {
2003 /* "Blur" the previous view. */
2004 update_view_title(prev);
2007 view->parent = prev;
2010 if (view->pipe && view->lines == 0) {
2011 /* Clear the old view and let the incremental updating refill
2020 /* If the view is backgrounded the above calls to report()
2021 * won't redraw the view title. */
2023 update_view_title(view);
2028 * User request switch noodle
2032 view_driver(struct view *view, enum request request)
2039 case REQ_MOVE_PAGE_UP:
2040 case REQ_MOVE_PAGE_DOWN:
2041 case REQ_MOVE_FIRST_LINE:
2042 case REQ_MOVE_LAST_LINE:
2043 move_view(view, request, TRUE);
2046 case REQ_SCROLL_LINE_DOWN:
2047 case REQ_SCROLL_LINE_UP:
2048 case REQ_SCROLL_PAGE_DOWN:
2049 case REQ_SCROLL_PAGE_UP:
2050 scroll_view(view, request);
2055 report("No file chosen, press 't' to open tree view");
2064 case REQ_VIEW_PAGER:
2065 open_view(view, request, OPEN_DEFAULT);
2070 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2072 if ((view == VIEW(REQ_VIEW_DIFF) &&
2073 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2074 (view == VIEW(REQ_VIEW_BLOB) &&
2075 view->parent == VIEW(REQ_VIEW_TREE))) {
2076 bool redraw = display[1] == view;
2078 view = view->parent;
2079 move_view(view, request, redraw);
2081 update_view_title(view);
2083 move_view(view, request, TRUE);
2090 report("Nothing to enter");
2093 return view->ops->enter(view, &view->line[view->lineno]);
2097 int nviews = displayed_views();
2098 int next_view = (current_view + 1) % nviews;
2100 if (next_view == current_view) {
2101 report("Only one view is displayed");
2105 current_view = next_view;
2106 /* Blur out the title of the previous view. */
2107 update_view_title(view);
2111 case REQ_TOGGLE_LINENO:
2112 opt_line_number = !opt_line_number;
2116 case REQ_TOGGLE_REV_GRAPH:
2117 opt_rev_graph = !opt_rev_graph;
2122 /* Always reload^Wrerun commands from the prompt. */
2123 open_view(view, opt_request, OPEN_RELOAD);
2127 case REQ_SEARCH_BACK:
2128 search_view(view, request, opt_search);
2133 find_next(view, request);
2136 case REQ_STOP_LOADING:
2137 for (i = 0; i < ARRAY_SIZE(views); i++) {
2140 report("Stopped loading the %s view", view->name),
2145 case REQ_SHOW_VERSION:
2146 report("%s (built %s)", VERSION, __DATE__);
2149 case REQ_SCREEN_RESIZE:
2152 case REQ_SCREEN_REDRAW:
2160 case REQ_VIEW_CLOSE:
2161 /* XXX: Mark closed views by letting view->parent point to the
2162 * view itself. Parents to closed view should never be
2165 view->parent->parent != view->parent) {
2166 memset(display, 0, sizeof(display));
2168 display[current_view] = view->parent;
2169 view->parent = view;
2179 /* An unknown key will show most commonly used commands. */
2180 report("Unknown key, press 'h' for help");
2193 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2195 char *text = line->data;
2196 enum line_type type = line->type;
2197 int textlen = strlen(text);
2200 wmove(view->win, lineno, 0);
2202 if (view->offset + lineno == view->lineno) {
2203 if (type == LINE_COMMIT) {
2204 string_copy(view->ref, text + 7);
2205 string_copy(ref_commit, view->ref);
2207 } else if (type == LINE_TREE_DIR || type == LINE_TREE_FILE) {
2208 strncpy(view->ref, text + STRING_SIZE("100644 blob "), 41);
2210 string_copy(ref_blob, view->ref);
2214 wchgat(view->win, -1, 0, type, NULL);
2217 attr = get_line_attr(type);
2218 wattrset(view->win, attr);
2220 if (opt_line_number || opt_tab_size < TABSIZE) {
2221 static char spaces[] = " ";
2222 int col_offset = 0, col = 0;
2224 if (opt_line_number) {
2225 unsigned long real_lineno = view->offset + lineno + 1;
2227 if (real_lineno == 1 ||
2228 (real_lineno % opt_num_interval) == 0) {
2229 wprintw(view->win, "%.*d", view->digits, real_lineno);
2232 waddnstr(view->win, spaces,
2233 MIN(view->digits, STRING_SIZE(spaces)));
2235 waddstr(view->win, ": ");
2236 col_offset = view->digits + 2;
2239 while (text && col_offset + col < view->width) {
2240 int cols_max = view->width - col_offset - col;
2244 if (*text == '\t') {
2246 assert(sizeof(spaces) > TABSIZE);
2248 cols = opt_tab_size - (col % opt_tab_size);
2251 text = strchr(text, '\t');
2252 cols = line ? text - pos : strlen(pos);
2255 waddnstr(view->win, pos, MIN(cols, cols_max));
2260 int col = 0, pos = 0;
2262 for (; pos < textlen && col < view->width; pos++, col++)
2263 if (text[pos] == '\t')
2264 col += TABSIZE - (col % TABSIZE) - 1;
2266 waddnstr(view->win, text, pos);
2273 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2275 char refbuf[SIZEOF_STR];
2279 if (!string_format(refbuf, "git describe %s", commit_id))
2282 pipe = popen(refbuf, "r");
2286 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2287 ref = chomp_string(ref);
2293 /* This is the only fatal call, since it can "corrupt" the buffer. */
2294 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2301 add_pager_refs(struct view *view, struct line *line)
2303 char buf[SIZEOF_STR];
2304 char *commit_id = line->data + STRING_SIZE("commit ");
2306 size_t bufpos = 0, refpos = 0;
2307 const char *sep = "Refs: ";
2308 bool is_tag = FALSE;
2310 assert(line->type == LINE_COMMIT);
2312 refs = get_refs(commit_id);
2314 if (view == VIEW(REQ_VIEW_DIFF))
2315 goto try_add_describe_ref;
2320 struct ref *ref = refs[refpos];
2321 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2323 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2328 } while (refs[refpos++]->next);
2330 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2331 try_add_describe_ref:
2332 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2336 if (!realloc_lines(view, view->line_size + 1))
2339 line = &view->line[view->lines];
2340 line->data = strdup(buf);
2344 line->type = LINE_PP_REFS;
2349 pager_read(struct view *view, char *data)
2351 struct line *line = &view->line[view->lines];
2353 line->data = strdup(data);
2357 line->type = get_line_type(line->data);
2360 if (line->type == LINE_COMMIT &&
2361 (view == VIEW(REQ_VIEW_DIFF) ||
2362 view == VIEW(REQ_VIEW_LOG)))
2363 add_pager_refs(view, line);
2369 pager_enter(struct view *view, struct line *line)
2373 if (line->type == LINE_COMMIT &&
2374 (view == VIEW(REQ_VIEW_LOG) ||
2375 view == VIEW(REQ_VIEW_PAGER))) {
2376 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2380 /* Always scroll the view even if it was split. That way
2381 * you can use Enter to scroll through the log view and
2382 * split open each commit diff. */
2383 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2385 /* FIXME: A minor workaround. Scrolling the view will call report("")
2386 * but if we are scrolling a non-current view this won't properly
2387 * update the view title. */
2389 update_view_title(view);
2395 pager_grep(struct view *view, struct line *line)
2398 char *text = line->data;
2403 if (regexec(&view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2409 static struct view_ops pager_ops = {
2422 /* Parse output from git ls-tree:
2424 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2425 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2426 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2427 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2430 #define SIZEOF_TREE_ATTR \
2431 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2433 #define TREE_UP_FORMAT "040000 tree %s\t.."
2436 tree_compare_entry(enum line_type type1, char *name1,
2437 enum line_type type2, char *name2)
2439 if (type1 != type2) {
2440 if (type1 == LINE_TREE_DIR)
2445 return strcmp(name1, name2);
2449 tree_read(struct view *view, char *text)
2451 size_t textlen = strlen(text);
2452 char buf[SIZEOF_STR];
2454 enum line_type type;
2455 bool first_read = view->lines == 0;
2457 if (textlen <= SIZEOF_TREE_ATTR)
2460 type = text[STRING_SIZE("100644 ")] == 't'
2461 ? LINE_TREE_DIR : LINE_TREE_FILE;
2464 /* Add path info line */
2465 if (snprintf(buf, sizeof(buf), "Directory path /%s", opt_path) < sizeof(buf) &&
2466 realloc_lines(view, view->line_size + 1) &&
2467 pager_read(view, buf))
2468 view->line[view->lines - 1].type = LINE_DEFAULT;
2472 /* Insert "link" to parent directory. */
2474 snprintf(buf, sizeof(buf), TREE_UP_FORMAT, view->ref) < sizeof(buf) &&
2475 realloc_lines(view, view->line_size + 1) &&
2476 pager_read(view, buf))
2477 view->line[view->lines - 1].type = LINE_TREE_DIR;
2482 /* Strip the path part ... */
2484 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2485 size_t striplen = strlen(opt_path);
2486 char *path = text + SIZEOF_TREE_ATTR;
2488 if (pathlen > striplen)
2489 memmove(path, path + striplen,
2490 pathlen - striplen + 1);
2493 /* Skip "Directory ..." and ".." line. */
2494 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2495 struct line *line = &view->line[pos];
2496 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2497 char *path2 = text + SIZEOF_TREE_ATTR;
2498 int cmp = tree_compare_entry(line->type, path1, type, path2);
2503 text = strdup(text);
2507 if (view->lines > pos)
2508 memmove(&view->line[pos + 1], &view->line[pos],
2509 (view->lines - pos) * sizeof(*line));
2511 line = &view->line[pos];
2518 if (!pager_read(view, text))
2521 /* Move the current line to the first tree entry. */
2525 view->line[view->lines - 1].type = type;
2530 tree_enter(struct view *view, struct line *line)
2532 enum open_flags flags = OPEN_DEFAULT;
2533 char *data = line->data;
2534 enum request request;
2536 switch (line->type) {
2538 /* Depending on whether it is a subdir or parent (updir?) link
2539 * mangle the path buffer. */
2540 if (line == &view->line[1] && *opt_path) {
2541 size_t path_len = strlen(opt_path);
2542 char *dirsep = opt_path + path_len - 1;
2544 while (dirsep > opt_path && dirsep[-1] != '/')
2550 size_t pathlen = strlen(opt_path);
2551 char *basename = data + SIZEOF_TREE_ATTR;
2553 string_format_from(opt_path, &pathlen, "%s/", basename);
2556 /* Trees and subtrees share the same ID, so they are not not
2557 * unique like blobs. */
2558 flags |= OPEN_RELOAD;
2559 request = REQ_VIEW_TREE;
2562 case LINE_TREE_FILE:
2563 /* This causes the blob view to become split, and not having it
2564 * in the tree dir case will make the blob view automatically
2565 * disappear when moving to a different directory. */
2566 flags |= OPEN_SPLIT;
2567 request = REQ_VIEW_BLOB;
2574 open_view(view, request, flags);
2576 if (!VIEW(request)->pipe)
2579 /* For tree views insert the path to the parent as the first line. */
2580 if (request == REQ_VIEW_BLOB) {
2581 /* Mirror what is showed in the title bar. */
2582 string_ncopy(ref_blob, data + STRING_SIZE("100644 blob "), 40);
2583 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2590 static struct view_ops tree_ops = {
2599 blob_read(struct view *view, char *line)
2601 bool state = pager_read(view, line);
2604 view->line[view->lines - 1].type = LINE_DEFAULT;
2609 static struct view_ops blob_ops = {
2623 char id[41]; /* SHA1 ID. */
2624 char title[75]; /* First line of the commit message. */
2625 char author[75]; /* Author of the commit. */
2626 struct tm time; /* Date from the author ident. */
2627 struct ref **refs; /* Repository references. */
2628 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2629 size_t graph_size; /* The width of the graph array. */
2633 main_draw(struct view *view, struct line *line, unsigned int lineno)
2635 char buf[DATE_COLS + 1];
2636 struct commit *commit = line->data;
2637 enum line_type type;
2643 if (!*commit->author)
2646 wmove(view->win, lineno, col);
2648 if (view->offset + lineno == view->lineno) {
2649 string_copy(view->ref, commit->id);
2650 string_copy(ref_commit, view->ref);
2652 wattrset(view->win, get_line_attr(type));
2653 wchgat(view->win, -1, 0, type, NULL);
2656 type = LINE_MAIN_COMMIT;
2657 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2660 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2661 waddnstr(view->win, buf, timelen);
2662 waddstr(view->win, " ");
2665 wmove(view->win, lineno, col);
2666 if (type != LINE_CURSOR)
2667 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2670 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2672 authorlen = strlen(commit->author);
2673 if (authorlen > AUTHOR_COLS - 2) {
2674 authorlen = AUTHOR_COLS - 2;
2680 waddnstr(view->win, commit->author, authorlen);
2681 if (type != LINE_CURSOR)
2682 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2683 waddch(view->win, '~');
2685 waddstr(view->win, commit->author);
2689 if (type != LINE_CURSOR)
2690 wattrset(view->win, A_NORMAL);
2692 if (opt_rev_graph && commit->graph_size) {
2695 wmove(view->win, lineno, col);
2696 /* Using waddch() instead of waddnstr() ensures that
2697 * they'll be rendered correctly for the cursor line. */
2698 for (i = 0; i < commit->graph_size; i++)
2699 waddch(view->win, commit->graph[i]);
2701 col += commit->graph_size + 1;
2704 wmove(view->win, lineno, col);
2710 if (type == LINE_CURSOR)
2712 else if (commit->refs[i]->tag)
2713 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2715 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2716 waddstr(view->win, "[");
2717 waddstr(view->win, commit->refs[i]->name);
2718 waddstr(view->win, "]");
2719 if (type != LINE_CURSOR)
2720 wattrset(view->win, A_NORMAL);
2721 waddstr(view->win, " ");
2722 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2723 } while (commit->refs[i++]->next);
2726 if (type != LINE_CURSOR)
2727 wattrset(view->win, get_line_attr(type));
2730 int titlelen = strlen(commit->title);
2732 if (col + titlelen > view->width)
2733 titlelen = view->width - col;
2735 waddnstr(view->win, commit->title, titlelen);
2741 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2743 main_read(struct view *view, char *line)
2745 enum line_type type = get_line_type(line);
2746 struct commit *commit = view->lines
2747 ? view->line[view->lines - 1].data : NULL;
2751 commit = calloc(1, sizeof(struct commit));
2755 line += STRING_SIZE("commit ");
2757 view->line[view->lines++].data = commit;
2758 string_copy(commit->id, line);
2759 commit->refs = get_refs(commit->id);
2760 commit->graph[commit->graph_size++] = ACS_LTEE;
2765 char *ident = line + STRING_SIZE("author ");
2766 char *end = strchr(ident, '<');
2772 char *email = end + 1;
2774 for (; end > ident && isspace(end[-1]); end--) ;
2776 if (end == ident && *email) {
2778 end = strchr(ident, '>');
2779 for (; end > ident && isspace(end[-1]); end--) ;
2784 /* End is NULL or ident meaning there's no author. */
2788 string_copy(commit->author, ident);
2790 /* Parse epoch and timezone */
2792 char *secs = strchr(end + 1, '>');
2796 if (!secs || secs[1] != ' ')
2800 time = (time_t) atol(secs);
2801 zone = strchr(secs, ' ');
2802 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2806 tz = ('0' - zone[1]) * 60 * 60 * 10;
2807 tz += ('0' - zone[2]) * 60 * 60;
2808 tz += ('0' - zone[3]) * 60;
2809 tz += ('0' - zone[4]) * 60;
2816 gmtime_r(&time, &commit->time);
2824 /* Fill in the commit title if it has not already been set. */
2825 if (commit->title[0])
2828 /* Require titles to start with a non-space character at the
2829 * offset used by git log. */
2830 /* FIXME: More gracefull handling of titles; append "..." to
2831 * shortened titles, etc. */
2832 if (strncmp(line, " ", 4) ||
2836 string_copy(commit->title, line + 4);
2843 main_enter(struct view *view, struct line *line)
2845 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2847 open_view(view, REQ_VIEW_DIFF, flags);
2852 main_grep(struct view *view, struct line *line)
2854 struct commit *commit = line->data;
2855 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2856 char buf[DATE_COLS + 1];
2859 for (state = S_TITLE; state < S_END; state++) {
2863 case S_TITLE: text = commit->title; break;
2864 case S_AUTHOR: text = commit->author; break;
2866 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2875 if (regexec(&view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2882 static struct view_ops main_ops = {
2892 * Unicode / UTF-8 handling
2894 * NOTE: Much of the following code for dealing with unicode is derived from
2895 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2896 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2899 /* I've (over)annotated a lot of code snippets because I am not entirely
2900 * confident that the approach taken by this small UTF-8 interface is correct.
2904 unicode_width(unsigned long c)
2907 (c <= 0x115f /* Hangul Jamo */
2910 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2912 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2913 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2914 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2915 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2916 || (c >= 0xffe0 && c <= 0xffe6)
2917 || (c >= 0x20000 && c <= 0x2fffd)
2918 || (c >= 0x30000 && c <= 0x3fffd)))
2924 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2925 * Illegal bytes are set one. */
2926 static const unsigned char utf8_bytes[256] = {
2927 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,
2928 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,
2929 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,
2930 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,
2931 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,
2932 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,
2933 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,
2934 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,
2937 /* Decode UTF-8 multi-byte representation into a unicode character. */
2938 static inline unsigned long
2939 utf8_to_unicode(const char *string, size_t length)
2941 unsigned long unicode;
2945 unicode = string[0];
2948 unicode = (string[0] & 0x1f) << 6;
2949 unicode += (string[1] & 0x3f);
2952 unicode = (string[0] & 0x0f) << 12;
2953 unicode += ((string[1] & 0x3f) << 6);
2954 unicode += (string[2] & 0x3f);
2957 unicode = (string[0] & 0x0f) << 18;
2958 unicode += ((string[1] & 0x3f) << 12);
2959 unicode += ((string[2] & 0x3f) << 6);
2960 unicode += (string[3] & 0x3f);
2963 unicode = (string[0] & 0x0f) << 24;
2964 unicode += ((string[1] & 0x3f) << 18);
2965 unicode += ((string[2] & 0x3f) << 12);
2966 unicode += ((string[3] & 0x3f) << 6);
2967 unicode += (string[4] & 0x3f);
2970 unicode = (string[0] & 0x01) << 30;
2971 unicode += ((string[1] & 0x3f) << 24);
2972 unicode += ((string[2] & 0x3f) << 18);
2973 unicode += ((string[3] & 0x3f) << 12);
2974 unicode += ((string[4] & 0x3f) << 6);
2975 unicode += (string[5] & 0x3f);
2978 die("Invalid unicode length");
2981 /* Invalid characters could return the special 0xfffd value but NUL
2982 * should be just as good. */
2983 return unicode > 0xffff ? 0 : unicode;
2986 /* Calculates how much of string can be shown within the given maximum width
2987 * and sets trimmed parameter to non-zero value if all of string could not be
2990 * Additionally, adds to coloffset how many many columns to move to align with
2991 * the expected position. Takes into account how multi-byte and double-width
2992 * characters will effect the cursor position.
2994 * Returns the number of bytes to output from string to satisfy max_width. */
2996 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
2998 const char *start = string;
2999 const char *end = strchr(string, '\0');
3005 while (string < end) {
3006 int c = *(unsigned char *) string;
3007 unsigned char bytes = utf8_bytes[c];
3009 unsigned long unicode;
3011 if (string + bytes > end)
3014 /* Change representation to figure out whether
3015 * it is a single- or double-width character. */
3017 unicode = utf8_to_unicode(string, bytes);
3018 /* FIXME: Graceful handling of invalid unicode character. */
3022 ucwidth = unicode_width(unicode);
3024 if (width > max_width) {
3029 /* The column offset collects the differences between the
3030 * number of bytes encoding a character and the number of
3031 * columns will be used for rendering said character.
3033 * So if some character A is encoded in 2 bytes, but will be
3034 * represented on the screen using only 1 byte this will and up
3035 * adding 1 to the multi-byte column offset.
3037 * Assumes that no double-width character can be encoding in
3038 * less than two bytes. */
3039 if (bytes > ucwidth)
3040 mbwidth += bytes - ucwidth;
3045 *coloffset += mbwidth;
3047 return string - start;
3055 /* Whether or not the curses interface has been initialized. */
3056 static bool cursed = FALSE;
3058 /* The status window is used for polling keystrokes. */
3059 static WINDOW *status_win;
3061 /* Update status and title window. */
3063 report(const char *msg, ...)
3065 static bool empty = TRUE;
3066 struct view *view = display[current_view];
3068 if (!empty || *msg) {
3071 va_start(args, msg);
3074 wmove(status_win, 0, 0);
3076 vwprintw(status_win, msg, args);
3081 wrefresh(status_win);
3086 update_view_title(view);
3087 update_display_cursor();
3090 /* Controls when nodelay should be in effect when polling user input. */
3092 set_nonblocking_input(bool loading)
3094 static unsigned int loading_views;
3096 if ((loading == FALSE && loading_views-- == 1) ||
3097 (loading == TRUE && loading_views++ == 0))
3098 nodelay(status_win, loading);
3106 /* Initialize the curses library */
3107 if (isatty(STDIN_FILENO)) {
3108 cursed = !!initscr();
3110 /* Leave stdin and stdout alone when acting as a pager. */
3111 FILE *io = fopen("/dev/tty", "r+");
3114 die("Failed to open /dev/tty");
3115 cursed = !!newterm(NULL, io, io);
3119 die("Failed to initialize curses");
3121 nonl(); /* Tell curses not to do NL->CR/NL on output */
3122 cbreak(); /* Take input chars one at a time, no wait for \n */
3123 noecho(); /* Don't echo input */
3124 leaveok(stdscr, TRUE);
3129 getmaxyx(stdscr, y, x);
3130 status_win = newwin(1, 0, y - 1, 0);
3132 die("Failed to create status window");
3134 /* Enable keyboard mapping */
3135 keypad(status_win, TRUE);
3136 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3140 read_prompt(const char *prompt)
3142 enum { READING, STOP, CANCEL } status = READING;
3143 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3146 while (status == READING) {
3150 foreach_view (view, i)
3153 report("%s%.*s", prompt, pos, buf);
3154 /* Refresh, accept single keystroke of input */
3155 key = wgetch(status_win);
3160 status = pos ? STOP : CANCEL;
3178 if (pos >= sizeof(buf)) {
3179 report("Input string too long");
3184 buf[pos++] = (char) key;
3188 if (status == CANCEL) {
3189 /* Clear the status window */
3200 * Repository references
3203 static struct ref *refs;
3204 static size_t refs_size;
3206 /* Id <-> ref store */
3207 static struct ref ***id_refs;
3208 static size_t id_refs_size;
3210 static struct ref **
3213 struct ref ***tmp_id_refs;
3214 struct ref **ref_list = NULL;
3215 size_t ref_list_size = 0;
3218 for (i = 0; i < id_refs_size; i++)
3219 if (!strcmp(id, id_refs[i][0]->id))
3222 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3226 id_refs = tmp_id_refs;
3228 for (i = 0; i < refs_size; i++) {
3231 if (strcmp(id, refs[i].id))
3234 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3242 if (ref_list_size > 0)
3243 ref_list[ref_list_size - 1]->next = 1;
3244 ref_list[ref_list_size] = &refs[i];
3246 /* XXX: The properties of the commit chains ensures that we can
3247 * safely modify the shared ref. The repo references will
3248 * always be similar for the same id. */
3249 ref_list[ref_list_size]->next = 0;
3254 id_refs[id_refs_size++] = ref_list;
3260 read_ref(char *id, int idlen, char *name, int namelen)
3265 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3266 /* Commits referenced by tags has "^{}" appended. */
3267 if (name[namelen - 1] != '}')
3270 while (namelen > 0 && name[namelen] != '^')
3274 namelen -= STRING_SIZE("refs/tags/");
3275 name += STRING_SIZE("refs/tags/");
3277 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3278 namelen -= STRING_SIZE("refs/heads/");
3279 name += STRING_SIZE("refs/heads/");
3281 } else if (!strcmp(name, "HEAD")) {
3285 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3289 ref = &refs[refs_size++];
3290 ref->name = malloc(namelen + 1);
3294 strncpy(ref->name, name, namelen);
3295 ref->name[namelen] = 0;
3297 string_copy(ref->id, id);
3305 const char *cmd_env = getenv("TIG_LS_REMOTE");
3306 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3308 return read_properties(popen(cmd, "r"), "\t", read_ref);
3312 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3314 if (!strcmp(name, "i18n.commitencoding"))
3315 string_copy(opt_encoding, value);
3321 load_repo_config(void)
3323 return read_properties(popen("git repo-config --list", "r"),
3324 "=", read_repo_config_option);
3328 read_properties(FILE *pipe, const char *separators,
3329 int (*read_property)(char *, int, char *, int))
3331 char buffer[BUFSIZ];
3338 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3343 name = chomp_string(name);
3344 namelen = strcspn(name, separators);
3346 if (name[namelen]) {
3348 value = chomp_string(name + namelen + 1);
3349 valuelen = strlen(value);
3356 state = read_property(name, namelen, value, valuelen);
3359 if (state != ERR && ferror(pipe))
3372 static void __NORETURN
3375 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3381 static void __NORETURN
3382 die(const char *err, ...)
3388 va_start(args, err);
3389 fputs("tig: ", stderr);
3390 vfprintf(stderr, err, args);
3391 fputs("\n", stderr);
3398 main(int argc, char *argv[])
3401 enum request request;
3404 signal(SIGINT, quit);
3406 if (setlocale(LC_ALL, "")) {
3407 string_copy(opt_codeset, nl_langinfo(CODESET));
3410 if (load_options() == ERR)
3411 die("Failed to load user config.");
3413 /* Load the repo config file so options can be overwritten from
3414 * the command line. */
3415 if (load_repo_config() == ERR)
3416 die("Failed to load repo config.");
3418 if (!parse_options(argc, argv))
3421 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3422 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3423 if (opt_iconv == ICONV_NONE)
3424 die("Failed to initialize character set conversion");
3427 if (load_refs() == ERR)
3428 die("Failed to load refs.");
3430 /* Require a git repository unless when running in pager mode. */
3431 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3432 die("Not a git repository");
3434 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3435 view->cmd_env = getenv(view->cmd_env);
3437 request = opt_request;
3441 while (view_driver(display[current_view], request)) {
3445 foreach_view (view, i)
3448 /* Refresh, accept single keystroke of input */
3449 key = wgetch(status_win);
3451 request = get_keybinding(display[current_view]->keymap, key);
3453 /* Some low-level request handling. This keeps access to
3454 * status_win restricted. */
3458 char *cmd = read_prompt(":");
3460 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3461 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3462 opt_request = REQ_VIEW_DIFF;
3464 opt_request = REQ_VIEW_PAGER;
3473 case REQ_SEARCH_BACK:
3475 const char *prompt = request == REQ_SEARCH
3477 char *search = read_prompt(prompt);
3480 string_copy(opt_search, search);
3485 case REQ_SCREEN_RESIZE:
3489 getmaxyx(stdscr, height, width);
3491 /* Resize the status view and let the view driver take
3492 * care of resizing the displayed views. */
3493 wresize(status_win, 1, width);
3494 mvwin(status_win, height - 1, 0);
3495 wrefresh(status_win);