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);
1687 view->regex = calloc(1, sizeof(*view->regex));
1692 regex_err = regcomp(view->regex, search, REG_EXTENDED);
1693 if (regex_err != 0) {
1694 char buf[SIZEOF_STR] = "unknown error";
1696 regerror(regex_err, view->regex, buf, sizeof(buf));
1697 report("Search failed: %s", buf);
1701 string_copy(view->grep, search);
1703 find_next(view, request);
1707 * Incremental updating
1711 end_update(struct view *view)
1715 set_nonblocking_input(FALSE);
1716 if (view->pipe == stdin)
1724 begin_update(struct view *view)
1726 const char *id = view->id;
1732 string_copy(view->cmd, opt_cmd);
1734 /* When running random commands, the view ref could have become
1735 * invalid so clear it. */
1738 } else if (view == VIEW(REQ_VIEW_TREE)) {
1739 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1741 if (strcmp(view->vid, view->id))
1744 if (!string_format(view->cmd, format, id, opt_path))
1748 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1750 if (!string_format(view->cmd, format, id, id, id, id, id))
1754 /* Special case for the pager view. */
1756 view->pipe = opt_pipe;
1759 view->pipe = popen(view->cmd, "r");
1765 set_nonblocking_input(TRUE);
1770 string_copy(view->vid, id);
1775 for (i = 0; i < view->lines; i++)
1776 if (view->line[i].data)
1777 free(view->line[i].data);
1783 view->start_time = time(NULL);
1788 static struct line *
1789 realloc_lines(struct view *view, size_t line_size)
1791 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1797 view->line_size = line_size;
1802 update_view(struct view *view)
1804 char in_buffer[BUFSIZ];
1805 char out_buffer[BUFSIZ * 2];
1807 /* The number of lines to read. If too low it will cause too much
1808 * redrawing (and possible flickering), if too high responsiveness
1810 unsigned long lines = view->height;
1811 int redraw_from = -1;
1816 /* Only redraw if lines are visible. */
1817 if (view->offset + view->height >= view->lines)
1818 redraw_from = view->lines - view->offset;
1820 /* FIXME: This is probably not perfect for backgrounded views. */
1821 if (!realloc_lines(view, view->lines + lines))
1824 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1825 size_t linelen = strlen(line);
1828 line[linelen - 1] = 0;
1830 if (opt_iconv != ICONV_NONE) {
1832 size_t inlen = linelen;
1834 char *outbuf = out_buffer;
1835 size_t outlen = sizeof(out_buffer);
1839 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1840 if (ret != (size_t) -1) {
1842 linelen = strlen(out_buffer);
1846 if (!view->ops->read(view, line))
1856 lines = view->lines;
1857 for (digits = 0; lines; digits++)
1860 /* Keep the displayed view in sync with line number scaling. */
1861 if (digits != view->digits) {
1862 view->digits = digits;
1867 if (!view_is_displayed(view))
1870 if (view == VIEW(REQ_VIEW_TREE)) {
1871 /* Clear the view and redraw everything since the tree sorting
1872 * might have rearranged things. */
1875 } else if (redraw_from >= 0) {
1876 /* If this is an incremental update, redraw the previous line
1877 * since for commits some members could have changed when
1878 * loading the main view. */
1879 if (redraw_from > 0)
1882 /* Incrementally draw avoids flickering. */
1883 redraw_view_from(view, redraw_from);
1886 /* Update the title _after_ the redraw so that if the redraw picks up a
1887 * commit reference in view->ref it'll be available here. */
1888 update_view_title(view);
1891 if (ferror(view->pipe)) {
1892 report("Failed to read: %s", strerror(errno));
1895 } else if (feof(view->pipe)) {
1903 report("Allocation failure");
1915 static void open_help_view(struct view *view)
1918 int lines = ARRAY_SIZE(req_info) + 2;
1921 if (view->lines > 0)
1924 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1925 if (!req_info[i].request)
1928 view->line = calloc(lines, sizeof(*view->line));
1930 report("Allocation failure");
1934 view->ops->read(view, "Quick reference for tig keybindings:");
1936 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1939 if (!req_info[i].request) {
1940 view->ops->read(view, "");
1941 view->ops->read(view, req_info[i].help);
1945 key = get_key(req_info[i].request);
1946 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1949 view->ops->read(view, buf);
1954 OPEN_DEFAULT = 0, /* Use default view switching. */
1955 OPEN_SPLIT = 1, /* Split current view. */
1956 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1957 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1961 open_view(struct view *prev, enum request request, enum open_flags flags)
1963 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1964 bool split = !!(flags & OPEN_SPLIT);
1965 bool reload = !!(flags & OPEN_RELOAD);
1966 struct view *view = VIEW(request);
1967 int nviews = displayed_views();
1968 struct view *base_view = display[0];
1970 if (view == prev && nviews == 1 && !reload) {
1971 report("Already in %s view", view->name);
1975 if (view == VIEW(REQ_VIEW_HELP)) {
1976 open_help_view(view);
1978 } else if ((reload || strcmp(view->vid, view->id)) &&
1979 !begin_update(view)) {
1980 report("Failed to load %s view", view->name);
1989 /* Maximize the current view. */
1990 memset(display, 0, sizeof(display));
1992 display[current_view] = view;
1995 /* Resize the view when switching between split- and full-screen,
1996 * or when switching between two different full-screen views. */
1997 if (nviews != displayed_views() ||
1998 (nviews == 1 && base_view != display[0]))
2001 if (split && prev->lineno - prev->offset >= prev->height) {
2002 /* Take the title line into account. */
2003 int lines = prev->lineno - prev->offset - prev->height + 1;
2005 /* Scroll the view that was split if the current line is
2006 * outside the new limited view. */
2007 do_scroll_view(prev, lines, TRUE);
2010 if (prev && view != prev) {
2011 if (split && !backgrounded) {
2012 /* "Blur" the previous view. */
2013 update_view_title(prev);
2016 view->parent = prev;
2019 if (view->pipe && view->lines == 0) {
2020 /* Clear the old view and let the incremental updating refill
2029 /* If the view is backgrounded the above calls to report()
2030 * won't redraw the view title. */
2032 update_view_title(view);
2037 * User request switch noodle
2041 view_driver(struct view *view, enum request request)
2048 case REQ_MOVE_PAGE_UP:
2049 case REQ_MOVE_PAGE_DOWN:
2050 case REQ_MOVE_FIRST_LINE:
2051 case REQ_MOVE_LAST_LINE:
2052 move_view(view, request, TRUE);
2055 case REQ_SCROLL_LINE_DOWN:
2056 case REQ_SCROLL_LINE_UP:
2057 case REQ_SCROLL_PAGE_DOWN:
2058 case REQ_SCROLL_PAGE_UP:
2059 scroll_view(view, request);
2064 report("No file chosen, press 't' to open tree view");
2073 case REQ_VIEW_PAGER:
2074 open_view(view, request, OPEN_DEFAULT);
2079 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2081 if ((view == VIEW(REQ_VIEW_DIFF) &&
2082 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2083 (view == VIEW(REQ_VIEW_BLOB) &&
2084 view->parent == VIEW(REQ_VIEW_TREE))) {
2085 bool redraw = display[1] == view;
2087 view = view->parent;
2088 move_view(view, request, redraw);
2090 update_view_title(view);
2092 move_view(view, request, TRUE);
2099 report("Nothing to enter");
2102 return view->ops->enter(view, &view->line[view->lineno]);
2106 int nviews = displayed_views();
2107 int next_view = (current_view + 1) % nviews;
2109 if (next_view == current_view) {
2110 report("Only one view is displayed");
2114 current_view = next_view;
2115 /* Blur out the title of the previous view. */
2116 update_view_title(view);
2120 case REQ_TOGGLE_LINENO:
2121 opt_line_number = !opt_line_number;
2125 case REQ_TOGGLE_REV_GRAPH:
2126 opt_rev_graph = !opt_rev_graph;
2131 /* Always reload^Wrerun commands from the prompt. */
2132 open_view(view, opt_request, OPEN_RELOAD);
2136 case REQ_SEARCH_BACK:
2137 search_view(view, request, opt_search);
2142 find_next(view, request);
2145 case REQ_STOP_LOADING:
2146 for (i = 0; i < ARRAY_SIZE(views); i++) {
2149 report("Stopped loading the %s view", view->name),
2154 case REQ_SHOW_VERSION:
2155 report("%s (built %s)", VERSION, __DATE__);
2158 case REQ_SCREEN_RESIZE:
2161 case REQ_SCREEN_REDRAW:
2169 case REQ_VIEW_CLOSE:
2170 /* XXX: Mark closed views by letting view->parent point to the
2171 * view itself. Parents to closed view should never be
2174 view->parent->parent != view->parent) {
2175 memset(display, 0, sizeof(display));
2177 display[current_view] = view->parent;
2178 view->parent = view;
2188 /* An unknown key will show most commonly used commands. */
2189 report("Unknown key, press 'h' for help");
2202 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2204 char *text = line->data;
2205 enum line_type type = line->type;
2206 int textlen = strlen(text);
2209 wmove(view->win, lineno, 0);
2211 if (view->offset + lineno == view->lineno) {
2212 if (type == LINE_COMMIT) {
2213 string_copy(view->ref, text + 7);
2214 string_copy(ref_commit, view->ref);
2216 } else if (type == LINE_TREE_DIR || type == LINE_TREE_FILE) {
2217 string_ncopy(view->ref, text + STRING_SIZE("100644 blob "), 40);
2218 string_copy(ref_blob, view->ref);
2222 wchgat(view->win, -1, 0, type, NULL);
2225 attr = get_line_attr(type);
2226 wattrset(view->win, attr);
2228 if (opt_line_number || opt_tab_size < TABSIZE) {
2229 static char spaces[] = " ";
2230 int col_offset = 0, col = 0;
2232 if (opt_line_number) {
2233 unsigned long real_lineno = view->offset + lineno + 1;
2235 if (real_lineno == 1 ||
2236 (real_lineno % opt_num_interval) == 0) {
2237 wprintw(view->win, "%.*d", view->digits, real_lineno);
2240 waddnstr(view->win, spaces,
2241 MIN(view->digits, STRING_SIZE(spaces)));
2243 waddstr(view->win, ": ");
2244 col_offset = view->digits + 2;
2247 while (text && col_offset + col < view->width) {
2248 int cols_max = view->width - col_offset - col;
2252 if (*text == '\t') {
2254 assert(sizeof(spaces) > TABSIZE);
2256 cols = opt_tab_size - (col % opt_tab_size);
2259 text = strchr(text, '\t');
2260 cols = line ? text - pos : strlen(pos);
2263 waddnstr(view->win, pos, MIN(cols, cols_max));
2268 int col = 0, pos = 0;
2270 for (; pos < textlen && col < view->width; pos++, col++)
2271 if (text[pos] == '\t')
2272 col += TABSIZE - (col % TABSIZE) - 1;
2274 waddnstr(view->win, text, pos);
2281 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2283 char refbuf[SIZEOF_STR];
2287 if (!string_format(refbuf, "git describe %s", commit_id))
2290 pipe = popen(refbuf, "r");
2294 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2295 ref = chomp_string(ref);
2301 /* This is the only fatal call, since it can "corrupt" the buffer. */
2302 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2309 add_pager_refs(struct view *view, struct line *line)
2311 char buf[SIZEOF_STR];
2312 char *commit_id = line->data + STRING_SIZE("commit ");
2314 size_t bufpos = 0, refpos = 0;
2315 const char *sep = "Refs: ";
2316 bool is_tag = FALSE;
2318 assert(line->type == LINE_COMMIT);
2320 refs = get_refs(commit_id);
2322 if (view == VIEW(REQ_VIEW_DIFF))
2323 goto try_add_describe_ref;
2328 struct ref *ref = refs[refpos];
2329 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2331 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2336 } while (refs[refpos++]->next);
2338 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2339 try_add_describe_ref:
2340 /* Add <tag>-g<commit_id> "fake" reference. */
2341 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2348 if (!realloc_lines(view, view->line_size + 1))
2351 line = &view->line[view->lines];
2352 line->data = strdup(buf);
2356 line->type = LINE_PP_REFS;
2361 pager_read(struct view *view, char *data)
2363 struct line *line = &view->line[view->lines];
2365 line->data = strdup(data);
2369 line->type = get_line_type(line->data);
2372 if (line->type == LINE_COMMIT &&
2373 (view == VIEW(REQ_VIEW_DIFF) ||
2374 view == VIEW(REQ_VIEW_LOG)))
2375 add_pager_refs(view, line);
2381 pager_enter(struct view *view, struct line *line)
2385 if (line->type == LINE_COMMIT &&
2386 (view == VIEW(REQ_VIEW_LOG) ||
2387 view == VIEW(REQ_VIEW_PAGER))) {
2388 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2392 /* Always scroll the view even if it was split. That way
2393 * you can use Enter to scroll through the log view and
2394 * split open each commit diff. */
2395 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2397 /* FIXME: A minor workaround. Scrolling the view will call report("")
2398 * but if we are scrolling a non-current view this won't properly
2399 * update the view title. */
2401 update_view_title(view);
2407 pager_grep(struct view *view, struct line *line)
2410 char *text = line->data;
2415 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2421 static struct view_ops pager_ops = {
2434 /* Parse output from git ls-tree:
2436 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2437 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2438 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2439 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2442 #define SIZEOF_TREE_ATTR \
2443 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2445 #define TREE_UP_FORMAT "040000 tree %s\t.."
2448 tree_compare_entry(enum line_type type1, char *name1,
2449 enum line_type type2, char *name2)
2451 if (type1 != type2) {
2452 if (type1 == LINE_TREE_DIR)
2457 return strcmp(name1, name2);
2461 tree_read(struct view *view, char *text)
2463 size_t textlen = strlen(text);
2464 char buf[SIZEOF_STR];
2466 enum line_type type;
2467 bool first_read = view->lines == 0;
2469 if (textlen <= SIZEOF_TREE_ATTR)
2472 type = text[STRING_SIZE("100644 ")] == 't'
2473 ? LINE_TREE_DIR : LINE_TREE_FILE;
2476 /* Add path info line */
2477 if (string_format(buf, "Directory path /%s", opt_path) &&
2478 realloc_lines(view, view->line_size + 1) &&
2479 pager_read(view, buf))
2480 view->line[view->lines - 1].type = LINE_DEFAULT;
2484 /* Insert "link" to parent directory. */
2486 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2487 realloc_lines(view, view->line_size + 1) &&
2488 pager_read(view, buf))
2489 view->line[view->lines - 1].type = LINE_TREE_DIR;
2494 /* Strip the path part ... */
2496 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2497 size_t striplen = strlen(opt_path);
2498 char *path = text + SIZEOF_TREE_ATTR;
2500 if (pathlen > striplen)
2501 memmove(path, path + striplen,
2502 pathlen - striplen + 1);
2505 /* Skip "Directory ..." and ".." line. */
2506 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2507 struct line *line = &view->line[pos];
2508 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2509 char *path2 = text + SIZEOF_TREE_ATTR;
2510 int cmp = tree_compare_entry(line->type, path1, type, path2);
2515 text = strdup(text);
2519 if (view->lines > pos)
2520 memmove(&view->line[pos + 1], &view->line[pos],
2521 (view->lines - pos) * sizeof(*line));
2523 line = &view->line[pos];
2530 if (!pager_read(view, text))
2533 /* Move the current line to the first tree entry. */
2537 view->line[view->lines - 1].type = type;
2542 tree_enter(struct view *view, struct line *line)
2544 enum open_flags flags = OPEN_DEFAULT;
2545 char *data = line->data;
2546 enum request request;
2548 switch (line->type) {
2550 /* Depending on whether it is a subdir or parent (updir?) link
2551 * mangle the path buffer. */
2552 if (line == &view->line[1] && *opt_path) {
2553 size_t path_len = strlen(opt_path);
2554 char *dirsep = opt_path + path_len - 1;
2556 while (dirsep > opt_path && dirsep[-1] != '/')
2562 size_t pathlen = strlen(opt_path);
2563 size_t origlen = pathlen;
2564 char *basename = data + SIZEOF_TREE_ATTR;
2566 if (string_format_from(opt_path, &pathlen, "%s/", basename)) {
2567 opt_path[origlen] = 0;
2572 /* Trees and subtrees share the same ID, so they are not not
2573 * unique like blobs. */
2574 flags |= OPEN_RELOAD;
2575 request = REQ_VIEW_TREE;
2578 case LINE_TREE_FILE:
2579 /* This causes the blob view to become split, and not having it
2580 * in the tree dir case will make the blob view automatically
2581 * disappear when moving to a different directory. */
2582 flags |= OPEN_SPLIT;
2583 request = REQ_VIEW_BLOB;
2590 open_view(view, request, flags);
2592 if (!VIEW(request)->pipe)
2595 /* For tree views insert the path to the parent as the first line. */
2596 if (request == REQ_VIEW_BLOB) {
2597 /* Mirror what is showed in the title bar. */
2598 string_ncopy(ref_blob, data + STRING_SIZE("100644 blob "), 40);
2599 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2606 static struct view_ops tree_ops = {
2615 blob_read(struct view *view, char *line)
2617 bool state = pager_read(view, line);
2620 view->line[view->lines - 1].type = LINE_DEFAULT;
2625 static struct view_ops blob_ops = {
2639 char id[41]; /* SHA1 ID. */
2640 char title[75]; /* First line of the commit message. */
2641 char author[75]; /* Author of the commit. */
2642 struct tm time; /* Date from the author ident. */
2643 struct ref **refs; /* Repository references. */
2644 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2645 size_t graph_size; /* The width of the graph array. */
2649 main_draw(struct view *view, struct line *line, unsigned int lineno)
2651 char buf[DATE_COLS + 1];
2652 struct commit *commit = line->data;
2653 enum line_type type;
2659 if (!*commit->author)
2662 wmove(view->win, lineno, col);
2664 if (view->offset + lineno == view->lineno) {
2665 string_copy(view->ref, commit->id);
2666 string_copy(ref_commit, view->ref);
2668 wattrset(view->win, get_line_attr(type));
2669 wchgat(view->win, -1, 0, type, NULL);
2672 type = LINE_MAIN_COMMIT;
2673 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2676 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2677 waddnstr(view->win, buf, timelen);
2678 waddstr(view->win, " ");
2681 wmove(view->win, lineno, col);
2682 if (type != LINE_CURSOR)
2683 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2686 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2688 authorlen = strlen(commit->author);
2689 if (authorlen > AUTHOR_COLS - 2) {
2690 authorlen = AUTHOR_COLS - 2;
2696 waddnstr(view->win, commit->author, authorlen);
2697 if (type != LINE_CURSOR)
2698 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2699 waddch(view->win, '~');
2701 waddstr(view->win, commit->author);
2705 if (type != LINE_CURSOR)
2706 wattrset(view->win, A_NORMAL);
2708 if (opt_rev_graph && commit->graph_size) {
2711 wmove(view->win, lineno, col);
2712 /* Using waddch() instead of waddnstr() ensures that
2713 * they'll be rendered correctly for the cursor line. */
2714 for (i = 0; i < commit->graph_size; i++)
2715 waddch(view->win, commit->graph[i]);
2717 col += commit->graph_size + 1;
2720 wmove(view->win, lineno, col);
2726 if (type == LINE_CURSOR)
2728 else if (commit->refs[i]->tag)
2729 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2731 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2732 waddstr(view->win, "[");
2733 waddstr(view->win, commit->refs[i]->name);
2734 waddstr(view->win, "]");
2735 if (type != LINE_CURSOR)
2736 wattrset(view->win, A_NORMAL);
2737 waddstr(view->win, " ");
2738 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2739 } while (commit->refs[i++]->next);
2742 if (type != LINE_CURSOR)
2743 wattrset(view->win, get_line_attr(type));
2746 int titlelen = strlen(commit->title);
2748 if (col + titlelen > view->width)
2749 titlelen = view->width - col;
2751 waddnstr(view->win, commit->title, titlelen);
2757 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2759 main_read(struct view *view, char *line)
2761 enum line_type type = get_line_type(line);
2762 struct commit *commit = view->lines
2763 ? view->line[view->lines - 1].data : NULL;
2767 commit = calloc(1, sizeof(struct commit));
2771 line += STRING_SIZE("commit ");
2773 view->line[view->lines++].data = commit;
2774 string_copy(commit->id, line);
2775 commit->refs = get_refs(commit->id);
2776 commit->graph[commit->graph_size++] = ACS_LTEE;
2781 char *ident = line + STRING_SIZE("author ");
2782 char *end = strchr(ident, '<');
2788 char *email = end + 1;
2790 for (; end > ident && isspace(end[-1]); end--) ;
2792 if (end == ident && *email) {
2794 end = strchr(ident, '>');
2795 for (; end > ident && isspace(end[-1]); end--) ;
2800 /* End is NULL or ident meaning there's no author. */
2804 string_copy(commit->author, ident);
2806 /* Parse epoch and timezone */
2808 char *secs = strchr(end + 1, '>');
2812 if (!secs || secs[1] != ' ')
2816 time = (time_t) atol(secs);
2817 zone = strchr(secs, ' ');
2818 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2822 tz = ('0' - zone[1]) * 60 * 60 * 10;
2823 tz += ('0' - zone[2]) * 60 * 60;
2824 tz += ('0' - zone[3]) * 60;
2825 tz += ('0' - zone[4]) * 60;
2832 gmtime_r(&time, &commit->time);
2840 /* Fill in the commit title if it has not already been set. */
2841 if (commit->title[0])
2844 /* Require titles to start with a non-space character at the
2845 * offset used by git log. */
2846 /* FIXME: More gracefull handling of titles; append "..." to
2847 * shortened titles, etc. */
2848 if (strncmp(line, " ", 4) ||
2852 string_copy(commit->title, line + 4);
2859 main_enter(struct view *view, struct line *line)
2861 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2863 open_view(view, REQ_VIEW_DIFF, flags);
2868 main_grep(struct view *view, struct line *line)
2870 struct commit *commit = line->data;
2871 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2872 char buf[DATE_COLS + 1];
2875 for (state = S_TITLE; state < S_END; state++) {
2879 case S_TITLE: text = commit->title; break;
2880 case S_AUTHOR: text = commit->author; break;
2882 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
2891 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
2898 static struct view_ops main_ops = {
2908 * Unicode / UTF-8 handling
2910 * NOTE: Much of the following code for dealing with unicode is derived from
2911 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2912 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2915 /* I've (over)annotated a lot of code snippets because I am not entirely
2916 * confident that the approach taken by this small UTF-8 interface is correct.
2920 unicode_width(unsigned long c)
2923 (c <= 0x115f /* Hangul Jamo */
2926 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2928 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2929 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2930 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2931 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2932 || (c >= 0xffe0 && c <= 0xffe6)
2933 || (c >= 0x20000 && c <= 0x2fffd)
2934 || (c >= 0x30000 && c <= 0x3fffd)))
2940 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2941 * Illegal bytes are set one. */
2942 static const unsigned char utf8_bytes[256] = {
2943 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,
2944 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,
2945 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,
2946 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,
2947 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,
2948 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,
2949 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,
2950 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,
2953 /* Decode UTF-8 multi-byte representation into a unicode character. */
2954 static inline unsigned long
2955 utf8_to_unicode(const char *string, size_t length)
2957 unsigned long unicode;
2961 unicode = string[0];
2964 unicode = (string[0] & 0x1f) << 6;
2965 unicode += (string[1] & 0x3f);
2968 unicode = (string[0] & 0x0f) << 12;
2969 unicode += ((string[1] & 0x3f) << 6);
2970 unicode += (string[2] & 0x3f);
2973 unicode = (string[0] & 0x0f) << 18;
2974 unicode += ((string[1] & 0x3f) << 12);
2975 unicode += ((string[2] & 0x3f) << 6);
2976 unicode += (string[3] & 0x3f);
2979 unicode = (string[0] & 0x0f) << 24;
2980 unicode += ((string[1] & 0x3f) << 18);
2981 unicode += ((string[2] & 0x3f) << 12);
2982 unicode += ((string[3] & 0x3f) << 6);
2983 unicode += (string[4] & 0x3f);
2986 unicode = (string[0] & 0x01) << 30;
2987 unicode += ((string[1] & 0x3f) << 24);
2988 unicode += ((string[2] & 0x3f) << 18);
2989 unicode += ((string[3] & 0x3f) << 12);
2990 unicode += ((string[4] & 0x3f) << 6);
2991 unicode += (string[5] & 0x3f);
2994 die("Invalid unicode length");
2997 /* Invalid characters could return the special 0xfffd value but NUL
2998 * should be just as good. */
2999 return unicode > 0xffff ? 0 : unicode;
3002 /* Calculates how much of string can be shown within the given maximum width
3003 * and sets trimmed parameter to non-zero value if all of string could not be
3006 * Additionally, adds to coloffset how many many columns to move to align with
3007 * the expected position. Takes into account how multi-byte and double-width
3008 * characters will effect the cursor position.
3010 * Returns the number of bytes to output from string to satisfy max_width. */
3012 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3014 const char *start = string;
3015 const char *end = strchr(string, '\0');
3021 while (string < end) {
3022 int c = *(unsigned char *) string;
3023 unsigned char bytes = utf8_bytes[c];
3025 unsigned long unicode;
3027 if (string + bytes > end)
3030 /* Change representation to figure out whether
3031 * it is a single- or double-width character. */
3033 unicode = utf8_to_unicode(string, bytes);
3034 /* FIXME: Graceful handling of invalid unicode character. */
3038 ucwidth = unicode_width(unicode);
3040 if (width > max_width) {
3045 /* The column offset collects the differences between the
3046 * number of bytes encoding a character and the number of
3047 * columns will be used for rendering said character.
3049 * So if some character A is encoded in 2 bytes, but will be
3050 * represented on the screen using only 1 byte this will and up
3051 * adding 1 to the multi-byte column offset.
3053 * Assumes that no double-width character can be encoding in
3054 * less than two bytes. */
3055 if (bytes > ucwidth)
3056 mbwidth += bytes - ucwidth;
3061 *coloffset += mbwidth;
3063 return string - start;
3071 /* Whether or not the curses interface has been initialized. */
3072 static bool cursed = FALSE;
3074 /* The status window is used for polling keystrokes. */
3075 static WINDOW *status_win;
3077 /* Update status and title window. */
3079 report(const char *msg, ...)
3081 static bool empty = TRUE;
3082 struct view *view = display[current_view];
3084 if (!empty || *msg) {
3087 va_start(args, msg);
3090 wmove(status_win, 0, 0);
3092 vwprintw(status_win, msg, args);
3097 wrefresh(status_win);
3102 update_view_title(view);
3103 update_display_cursor();
3106 /* Controls when nodelay should be in effect when polling user input. */
3108 set_nonblocking_input(bool loading)
3110 static unsigned int loading_views;
3112 if ((loading == FALSE && loading_views-- == 1) ||
3113 (loading == TRUE && loading_views++ == 0))
3114 nodelay(status_win, loading);
3122 /* Initialize the curses library */
3123 if (isatty(STDIN_FILENO)) {
3124 cursed = !!initscr();
3126 /* Leave stdin and stdout alone when acting as a pager. */
3127 FILE *io = fopen("/dev/tty", "r+");
3130 die("Failed to open /dev/tty");
3131 cursed = !!newterm(NULL, io, io);
3135 die("Failed to initialize curses");
3137 nonl(); /* Tell curses not to do NL->CR/NL on output */
3138 cbreak(); /* Take input chars one at a time, no wait for \n */
3139 noecho(); /* Don't echo input */
3140 leaveok(stdscr, TRUE);
3145 getmaxyx(stdscr, y, x);
3146 status_win = newwin(1, 0, y - 1, 0);
3148 die("Failed to create status window");
3150 /* Enable keyboard mapping */
3151 keypad(status_win, TRUE);
3152 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3156 read_prompt(const char *prompt)
3158 enum { READING, STOP, CANCEL } status = READING;
3159 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3162 while (status == READING) {
3166 foreach_view (view, i)
3169 report("%s%.*s", prompt, pos, buf);
3170 /* Refresh, accept single keystroke of input */
3171 key = wgetch(status_win);
3176 status = pos ? STOP : CANCEL;
3194 if (pos >= sizeof(buf)) {
3195 report("Input string too long");
3200 buf[pos++] = (char) key;
3204 if (status == CANCEL) {
3205 /* Clear the status window */
3216 * Repository references
3219 static struct ref *refs;
3220 static size_t refs_size;
3222 /* Id <-> ref store */
3223 static struct ref ***id_refs;
3224 static size_t id_refs_size;
3226 static struct ref **
3229 struct ref ***tmp_id_refs;
3230 struct ref **ref_list = NULL;
3231 size_t ref_list_size = 0;
3234 for (i = 0; i < id_refs_size; i++)
3235 if (!strcmp(id, id_refs[i][0]->id))
3238 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3242 id_refs = tmp_id_refs;
3244 for (i = 0; i < refs_size; i++) {
3247 if (strcmp(id, refs[i].id))
3250 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3258 if (ref_list_size > 0)
3259 ref_list[ref_list_size - 1]->next = 1;
3260 ref_list[ref_list_size] = &refs[i];
3262 /* XXX: The properties of the commit chains ensures that we can
3263 * safely modify the shared ref. The repo references will
3264 * always be similar for the same id. */
3265 ref_list[ref_list_size]->next = 0;
3270 id_refs[id_refs_size++] = ref_list;
3276 read_ref(char *id, int idlen, char *name, int namelen)
3281 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3282 /* Commits referenced by tags has "^{}" appended. */
3283 if (name[namelen - 1] != '}')
3286 while (namelen > 0 && name[namelen] != '^')
3290 namelen -= STRING_SIZE("refs/tags/");
3291 name += STRING_SIZE("refs/tags/");
3293 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3294 namelen -= STRING_SIZE("refs/heads/");
3295 name += STRING_SIZE("refs/heads/");
3297 } else if (!strcmp(name, "HEAD")) {
3301 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3305 ref = &refs[refs_size++];
3306 ref->name = malloc(namelen + 1);
3310 strncpy(ref->name, name, namelen);
3311 ref->name[namelen] = 0;
3313 string_copy(ref->id, id);
3321 const char *cmd_env = getenv("TIG_LS_REMOTE");
3322 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3324 return read_properties(popen(cmd, "r"), "\t", read_ref);
3328 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3330 if (!strcmp(name, "i18n.commitencoding"))
3331 string_copy(opt_encoding, value);
3337 load_repo_config(void)
3339 return read_properties(popen("git repo-config --list", "r"),
3340 "=", read_repo_config_option);
3344 read_properties(FILE *pipe, const char *separators,
3345 int (*read_property)(char *, int, char *, int))
3347 char buffer[BUFSIZ];
3354 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3359 name = chomp_string(name);
3360 namelen = strcspn(name, separators);
3362 if (name[namelen]) {
3364 value = chomp_string(name + namelen + 1);
3365 valuelen = strlen(value);
3372 state = read_property(name, namelen, value, valuelen);
3375 if (state != ERR && ferror(pipe))
3388 static void __NORETURN
3391 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3397 static void __NORETURN
3398 die(const char *err, ...)
3404 va_start(args, err);
3405 fputs("tig: ", stderr);
3406 vfprintf(stderr, err, args);
3407 fputs("\n", stderr);
3414 main(int argc, char *argv[])
3417 enum request request;
3420 signal(SIGINT, quit);
3422 if (setlocale(LC_ALL, "")) {
3423 string_copy(opt_codeset, nl_langinfo(CODESET));
3426 if (load_options() == ERR)
3427 die("Failed to load user config.");
3429 /* Load the repo config file so options can be overwritten from
3430 * the command line. */
3431 if (load_repo_config() == ERR)
3432 die("Failed to load repo config.");
3434 if (!parse_options(argc, argv))
3437 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3438 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3439 if (opt_iconv == ICONV_NONE)
3440 die("Failed to initialize character set conversion");
3443 if (load_refs() == ERR)
3444 die("Failed to load refs.");
3446 /* Require a git repository unless when running in pager mode. */
3447 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3448 die("Not a git repository");
3450 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3451 view->cmd_env = getenv(view->cmd_env);
3453 request = opt_request;
3457 while (view_driver(display[current_view], request)) {
3461 foreach_view (view, i)
3464 /* Refresh, accept single keystroke of input */
3465 key = wgetch(status_win);
3467 request = get_keybinding(display[current_view]->keymap, key);
3469 /* Some low-level request handling. This keeps access to
3470 * status_win restricted. */
3474 char *cmd = read_prompt(":");
3476 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3477 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3478 opt_request = REQ_VIEW_DIFF;
3480 opt_request = REQ_VIEW_PAGER;
3489 case REQ_SEARCH_BACK:
3491 const char *prompt = request == REQ_SEARCH
3493 char *search = read_prompt(prompt);
3496 string_copy(opt_search, search);
3501 case REQ_SCREEN_RESIZE:
3505 getmaxyx(stdscr, height, width);
3507 /* Resize the status view and let the view driver take
3508 * care of resizing the displayed views. */
3509 wresize(status_win, 1, width);
3510 mvwin(status_win, height - 1, 0);
3511 wrefresh(status_win);