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-0.6.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
66 #define REVGRAPH_INIT 'I'
67 #define REVGRAPH_MERGE 'M'
68 #define REVGRAPH_BRANCH '+'
69 #define REVGRAPH_COMMIT '*'
70 #define REVGRAPH_LINE '|'
72 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
74 /* This color name can be used to refer to the default term colors. */
75 #define COLOR_DEFAULT (-1)
77 #define ICONV_NONE ((iconv_t) -1)
79 /* The format and size of the date column in the main view. */
80 #define DATE_FORMAT "%Y-%m-%d %H:%M"
81 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
83 #define AUTHOR_COLS 20
85 /* The default interval between line numbers. */
86 #define NUMBER_INTERVAL 1
90 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
92 #define TIG_LS_REMOTE \
93 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
95 #define TIG_DIFF_CMD \
96 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
99 "git log --cc --stat -n100 %s 2>/dev/null"
101 #define TIG_MAIN_CMD \
102 "git log --topo-order --pretty=raw %s 2>/dev/null"
104 #define TIG_TREE_CMD \
107 #define TIG_BLOB_CMD \
108 "git cat-file blob %s"
110 /* XXX: Needs to be defined to the empty string. */
111 #define TIG_HELP_CMD ""
112 #define TIG_PAGER_CMD ""
114 /* Some ascii-shorthands fitted into the ncurses namespace. */
116 #define KEY_RETURN '\r'
121 char *name; /* Ref name; tag or head names are shortened. */
122 char id[SIZEOF_REV]; /* Commit SHA1 ID */
123 unsigned int tag:1; /* Is it a tag? */
124 unsigned int remote:1; /* Is it a remote ref? */
125 unsigned int next:1; /* For ref lists: are there more refs? */
128 static struct ref **get_refs(char *id);
137 set_from_int_map(struct int_map *map, size_t map_size,
138 int *value, const char *name, int namelen)
143 for (i = 0; i < map_size; i++)
144 if (namelen == map[i].namelen &&
145 !strncasecmp(name, map[i].name, namelen)) {
146 *value = map[i].value;
159 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
161 if (srclen > dstlen - 1)
164 strncpy(dst, src, srclen);
168 /* Shorthands for safely copying into a fixed buffer. */
170 #define string_copy(dst, src) \
171 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
173 #define string_ncopy(dst, src, srclen) \
174 string_ncopy_do(dst, sizeof(dst), src, srclen)
177 chomp_string(char *name)
181 while (isspace(*name))
184 namelen = strlen(name) - 1;
185 while (namelen > 0 && isspace(name[namelen]))
192 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
195 size_t pos = bufpos ? *bufpos : 0;
198 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
204 return pos >= bufsize ? FALSE : TRUE;
207 #define string_format(buf, fmt, args...) \
208 string_nformat(buf, sizeof(buf), NULL, fmt, args)
210 #define string_format_from(buf, from, fmt, args...) \
211 string_nformat(buf, sizeof(buf), from, fmt, args)
214 string_enum_compare(const char *str1, const char *str2, int len)
218 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
220 /* Diff-Header == DIFF_HEADER */
221 for (i = 0; i < len; i++) {
222 if (toupper(str1[i]) == toupper(str2[i]))
225 if (string_enum_sep(str1[i]) &&
226 string_enum_sep(str2[i]))
229 return str1[i] - str2[i];
237 * NOTE: The following is a slightly modified copy of the git project's shell
238 * quoting routines found in the quote.c file.
240 * Help to copy the thing properly quoted for the shell safety. any single
241 * quote is replaced with '\'', any exclamation point is replaced with '\!',
242 * and the whole thing is enclosed in a
245 * original sq_quote result
246 * name ==> name ==> 'name'
247 * a b ==> a b ==> 'a b'
248 * a'b ==> a'\''b ==> 'a'\''b'
249 * a!b ==> a'\!'b ==> 'a'\!'b'
253 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
257 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
260 while ((c = *src++)) {
261 if (c == '\'' || c == '!') {
281 /* XXX: Keep the view request first and in sync with views[]. */ \
282 REQ_GROUP("View switching") \
283 REQ_(VIEW_MAIN, "Show main view"), \
284 REQ_(VIEW_DIFF, "Show diff view"), \
285 REQ_(VIEW_LOG, "Show log view"), \
286 REQ_(VIEW_TREE, "Show tree view"), \
287 REQ_(VIEW_BLOB, "Show blob view"), \
288 REQ_(VIEW_HELP, "Show help page"), \
289 REQ_(VIEW_PAGER, "Show pager view"), \
291 REQ_GROUP("View manipulation") \
292 REQ_(ENTER, "Enter current line and scroll"), \
293 REQ_(NEXT, "Move to next"), \
294 REQ_(PREVIOUS, "Move to previous"), \
295 REQ_(VIEW_NEXT, "Move focus to next view"), \
296 REQ_(VIEW_CLOSE, "Close the current view"), \
297 REQ_(QUIT, "Close all views and quit"), \
299 REQ_GROUP("Cursor navigation") \
300 REQ_(MOVE_UP, "Move cursor one line up"), \
301 REQ_(MOVE_DOWN, "Move cursor one line down"), \
302 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
303 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
304 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
305 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
307 REQ_GROUP("Scrolling") \
308 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
309 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
310 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
311 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
313 REQ_GROUP("Searching") \
314 REQ_(SEARCH, "Search the view"), \
315 REQ_(SEARCH_BACK, "Search backwards in the view"), \
316 REQ_(FIND_NEXT, "Find next search match"), \
317 REQ_(FIND_PREV, "Find previous search match"), \
320 REQ_(NONE, "Do nothing"), \
321 REQ_(PROMPT, "Bring up the prompt"), \
322 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
323 REQ_(SCREEN_RESIZE, "Resize the screen"), \
324 REQ_(SHOW_VERSION, "Show version information"), \
325 REQ_(STOP_LOADING, "Stop all loading views"), \
326 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
327 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
330 /* User action requests. */
332 #define REQ_GROUP(help)
333 #define REQ_(req, help) REQ_##req
335 /* Offset all requests to avoid conflicts with ncurses getch values. */
336 REQ_OFFSET = KEY_MAX + 1,
344 struct request_info {
345 enum request request;
351 static struct request_info req_info[] = {
352 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
353 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
360 get_request(const char *name)
362 int namelen = strlen(name);
365 for (i = 0; i < ARRAY_SIZE(req_info); i++)
366 if (req_info[i].namelen == namelen &&
367 !string_enum_compare(req_info[i].name, name, namelen))
368 return req_info[i].request;
378 static const char usage[] =
379 VERSION " (" __DATE__ ")\n"
381 "Usage: tig [options]\n"
382 " or: tig [options] [--] [git log options]\n"
383 " or: tig [options] log [git log options]\n"
384 " or: tig [options] diff [git diff options]\n"
385 " or: tig [options] show [git show options]\n"
386 " or: tig [options] < [git command output]\n"
389 " -l Start up in log view\n"
390 " -d Start up in diff view\n"
391 " -n[I], --line-number[=I] Show line numbers with given interval\n"
392 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
393 " -- Mark end of tig options\n"
394 " -v, --version Show version and exit\n"
395 " -h, --help Show help message and exit\n";
397 /* Option and state variables. */
398 static bool opt_line_number = FALSE;
399 static bool opt_rev_graph = FALSE;
400 static int opt_num_interval = NUMBER_INTERVAL;
401 static int opt_tab_size = TABSIZE;
402 static enum request opt_request = REQ_VIEW_MAIN;
403 static char opt_cmd[SIZEOF_STR] = "";
404 static char opt_path[SIZEOF_STR] = "";
405 static FILE *opt_pipe = NULL;
406 static char opt_encoding[20] = "UTF-8";
407 static bool opt_utf8 = TRUE;
408 static char opt_codeset[20] = "UTF-8";
409 static iconv_t opt_iconv = ICONV_NONE;
410 static char opt_search[SIZEOF_STR] = "";
418 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
428 int namelen = strlen(name);
432 if (strncmp(opt, name, namelen))
435 if (opt[namelen] == '=')
436 value = opt + namelen + 1;
439 if (!short_name || opt[1] != short_name)
444 va_start(args, type);
445 if (type == OPT_INT) {
446 number = va_arg(args, int *);
448 *number = atoi(value);
455 /* Returns the index of log or diff command or -1 to exit. */
457 parse_options(int argc, char *argv[])
461 for (i = 1; i < argc; i++) {
464 if (!strcmp(opt, "log") ||
465 !strcmp(opt, "diff") ||
466 !strcmp(opt, "show")) {
467 opt_request = opt[0] == 'l'
468 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
472 if (opt[0] && opt[0] != '-')
475 if (!strcmp(opt, "-l")) {
476 opt_request = REQ_VIEW_LOG;
480 if (!strcmp(opt, "-d")) {
481 opt_request = REQ_VIEW_DIFF;
485 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
486 opt_line_number = TRUE;
490 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
491 opt_tab_size = MIN(opt_tab_size, TABSIZE);
495 if (check_option(opt, 'v', "version", OPT_NONE)) {
496 printf("tig version %s\n", VERSION);
500 if (check_option(opt, 'h', "help", OPT_NONE)) {
505 if (!strcmp(opt, "--")) {
510 die("unknown option '%s'\n\n%s", opt, usage);
513 if (!isatty(STDIN_FILENO)) {
514 opt_request = REQ_VIEW_PAGER;
517 } else if (i < argc) {
520 if (opt_request == REQ_VIEW_MAIN)
521 /* XXX: This is vulnerable to the user overriding
522 * options required for the main view parser. */
523 string_copy(opt_cmd, "git log --pretty=raw");
525 string_copy(opt_cmd, "git");
526 buf_size = strlen(opt_cmd);
528 while (buf_size < sizeof(opt_cmd) && i < argc) {
529 opt_cmd[buf_size++] = ' ';
530 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
533 if (buf_size >= sizeof(opt_cmd))
534 die("command too long");
536 opt_cmd[buf_size] = 0;
539 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
547 * Line-oriented content detection.
551 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
553 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
554 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
555 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
556 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
557 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
558 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
559 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
563 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
564 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
566 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
567 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
568 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
570 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
571 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
572 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
574 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
575 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
576 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
577 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
578 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
579 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
580 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
581 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
582 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
583 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
584 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
585 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
586 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
587 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
588 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
589 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
590 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
591 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
592 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
595 #define LINE(type, line, fg, bg, attr) \
602 const char *name; /* Option name. */
603 int namelen; /* Size of option name. */
604 const char *line; /* The start of line to match. */
605 int linelen; /* Size of string to match. */
606 int fg, bg, attr; /* Color and text attributes for the lines. */
609 static struct line_info line_info[] = {
610 #define LINE(type, line, fg, bg, attr) \
611 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
616 static enum line_type
617 get_line_type(char *line)
619 int linelen = strlen(line);
622 for (type = 0; type < ARRAY_SIZE(line_info); type++)
623 /* Case insensitive search matches Signed-off-by lines better. */
624 if (linelen >= line_info[type].linelen &&
625 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
632 get_line_attr(enum line_type type)
634 assert(type < ARRAY_SIZE(line_info));
635 return COLOR_PAIR(type) | line_info[type].attr;
638 static struct line_info *
639 get_line_info(char *name, int namelen)
643 for (type = 0; type < ARRAY_SIZE(line_info); type++)
644 if (namelen == line_info[type].namelen &&
645 !string_enum_compare(line_info[type].name, name, namelen))
646 return &line_info[type];
654 int default_bg = COLOR_BLACK;
655 int default_fg = COLOR_WHITE;
660 if (use_default_colors() != ERR) {
665 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
666 struct line_info *info = &line_info[type];
667 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
668 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
670 init_pair(type, fg, bg);
678 unsigned int selected:1;
680 void *data; /* User data */
690 enum request request;
691 struct keybinding *next;
694 static struct keybinding default_keybindings[] = {
696 { 'm', REQ_VIEW_MAIN },
697 { 'd', REQ_VIEW_DIFF },
698 { 'l', REQ_VIEW_LOG },
699 { 't', REQ_VIEW_TREE },
700 { 'f', REQ_VIEW_BLOB },
701 { 'p', REQ_VIEW_PAGER },
702 { 'h', REQ_VIEW_HELP },
704 /* View manipulation */
705 { 'q', REQ_VIEW_CLOSE },
706 { KEY_TAB, REQ_VIEW_NEXT },
707 { KEY_RETURN, REQ_ENTER },
708 { KEY_UP, REQ_PREVIOUS },
709 { KEY_DOWN, REQ_NEXT },
711 /* Cursor navigation */
712 { 'k', REQ_MOVE_UP },
713 { 'j', REQ_MOVE_DOWN },
714 { KEY_HOME, REQ_MOVE_FIRST_LINE },
715 { KEY_END, REQ_MOVE_LAST_LINE },
716 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
717 { ' ', REQ_MOVE_PAGE_DOWN },
718 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
719 { 'b', REQ_MOVE_PAGE_UP },
720 { '-', REQ_MOVE_PAGE_UP },
723 { KEY_IC, REQ_SCROLL_LINE_UP },
724 { KEY_DC, REQ_SCROLL_LINE_DOWN },
725 { 'w', REQ_SCROLL_PAGE_UP },
726 { 's', REQ_SCROLL_PAGE_DOWN },
730 { '?', REQ_SEARCH_BACK },
731 { 'n', REQ_FIND_NEXT },
732 { 'N', REQ_FIND_PREV },
736 { 'z', REQ_STOP_LOADING },
737 { 'v', REQ_SHOW_VERSION },
738 { 'r', REQ_SCREEN_REDRAW },
739 { '.', REQ_TOGGLE_LINENO },
740 { 'g', REQ_TOGGLE_REV_GRAPH },
743 /* Using the ncurses SIGWINCH handler. */
744 { KEY_RESIZE, REQ_SCREEN_RESIZE },
747 #define KEYMAP_INFO \
758 #define KEYMAP_(name) KEYMAP_##name
763 static struct int_map keymap_table[] = {
764 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
769 #define set_keymap(map, name) \
770 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
772 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
775 add_keybinding(enum keymap keymap, enum request request, int key)
777 struct keybinding *keybinding;
779 keybinding = calloc(1, sizeof(*keybinding));
781 die("Failed to allocate keybinding");
783 keybinding->alias = key;
784 keybinding->request = request;
785 keybinding->next = keybindings[keymap];
786 keybindings[keymap] = keybinding;
789 /* Looks for a key binding first in the given map, then in the generic map, and
790 * lastly in the default keybindings. */
792 get_keybinding(enum keymap keymap, int key)
794 struct keybinding *kbd;
797 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
798 if (kbd->alias == key)
801 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
802 if (kbd->alias == key)
805 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
806 if (default_keybindings[i].alias == key)
807 return default_keybindings[i].request;
809 return (enum request) key;
818 static struct key key_table[] = {
819 { "Enter", KEY_RETURN },
821 { "Backspace", KEY_BACKSPACE },
823 { "Escape", KEY_ESC },
824 { "Left", KEY_LEFT },
825 { "Right", KEY_RIGHT },
827 { "Down", KEY_DOWN },
828 { "Insert", KEY_IC },
829 { "Delete", KEY_DC },
831 { "Home", KEY_HOME },
833 { "PageUp", KEY_PPAGE },
834 { "PageDown", KEY_NPAGE },
844 { "F10", KEY_F(10) },
845 { "F11", KEY_F(11) },
846 { "F12", KEY_F(12) },
850 get_key_value(const char *name)
854 for (i = 0; i < ARRAY_SIZE(key_table); i++)
855 if (!strcasecmp(key_table[i].name, name))
856 return key_table[i].value;
858 if (strlen(name) == 1 && isprint(*name))
865 get_key(enum request request)
867 static char buf[BUFSIZ];
868 static char key_char[] = "'X'";
875 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
876 struct keybinding *keybinding = &default_keybindings[i];
880 if (keybinding->request != request)
883 for (key = 0; key < ARRAY_SIZE(key_table); key++)
884 if (key_table[key].value == keybinding->alias)
885 seq = key_table[key].name;
888 keybinding->alias < 127 &&
889 isprint(keybinding->alias)) {
890 key_char[1] = (char) keybinding->alias;
897 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
898 return "Too many keybindings!";
907 * User config file handling.
910 static struct int_map color_map[] = {
911 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
923 #define set_color(color, name) \
924 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
926 static struct int_map attr_map[] = {
927 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
937 #define set_attribute(attr, name) \
938 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
940 static int config_lineno;
941 static bool config_errors;
942 static char *config_msg;
944 /* Wants: object fgcolor bgcolor [attr] */
946 option_color_command(int argc, char *argv[])
948 struct line_info *info;
950 if (argc != 3 && argc != 4) {
951 config_msg = "Wrong number of arguments given to color command";
955 info = get_line_info(argv[0], strlen(argv[0]));
957 config_msg = "Unknown color name";
961 if (set_color(&info->fg, argv[1]) == ERR ||
962 set_color(&info->bg, argv[2]) == ERR) {
963 config_msg = "Unknown color";
967 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
968 config_msg = "Unknown attribute";
975 /* Wants: name = value */
977 option_set_command(int argc, char *argv[])
980 config_msg = "Wrong number of arguments given to set command";
984 if (strcmp(argv[1], "=")) {
985 config_msg = "No value assigned";
989 if (!strcmp(argv[0], "show-rev-graph")) {
990 opt_rev_graph = (!strcmp(argv[2], "1") ||
991 !strcmp(argv[2], "true") ||
992 !strcmp(argv[2], "yes"));
996 if (!strcmp(argv[0], "line-number-interval")) {
997 opt_num_interval = atoi(argv[2]);
1001 if (!strcmp(argv[0], "tab-size")) {
1002 opt_tab_size = atoi(argv[2]);
1006 if (!strcmp(argv[0], "commit-encoding")) {
1007 char *arg = argv[2];
1008 int delimiter = *arg;
1011 switch (delimiter) {
1014 for (arg++, i = 0; arg[i]; i++)
1015 if (arg[i] == delimiter) {
1020 string_copy(opt_encoding, arg);
1025 config_msg = "Unknown variable name";
1029 /* Wants: mode request key */
1031 option_bind_command(int argc, char *argv[])
1033 enum request request;
1038 config_msg = "Wrong number of arguments given to bind command";
1042 if (set_keymap(&keymap, argv[0]) == ERR) {
1043 config_msg = "Unknown key map";
1047 key = get_key_value(argv[1]);
1049 config_msg = "Unknown key";
1053 request = get_request(argv[2]);
1054 if (request == REQ_UNKNOWN) {
1055 config_msg = "Unknown request name";
1059 add_keybinding(keymap, request, key);
1065 set_option(char *opt, char *value)
1072 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1073 argv[argc++] = value;
1080 while (isspace(*value))
1084 if (!strcmp(opt, "color"))
1085 return option_color_command(argc, argv);
1087 if (!strcmp(opt, "set"))
1088 return option_set_command(argc, argv);
1090 if (!strcmp(opt, "bind"))
1091 return option_bind_command(argc, argv);
1093 config_msg = "Unknown option command";
1098 read_option(char *opt, int optlen, char *value, int valuelen)
1103 config_msg = "Internal error";
1105 /* Check for comment markers, since read_properties() will
1106 * only ensure opt and value are split at first " \t". */
1107 optlen = strcspn(opt, "#");
1111 if (opt[optlen] != 0) {
1112 config_msg = "No option value";
1116 /* Look for comment endings in the value. */
1117 int len = strcspn(value, "#");
1119 if (len < valuelen) {
1121 value[valuelen] = 0;
1124 status = set_option(opt, value);
1127 if (status == ERR) {
1128 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1129 config_lineno, optlen, opt, config_msg);
1130 config_errors = TRUE;
1133 /* Always keep going if errors are encountered. */
1140 char *home = getenv("HOME");
1141 char buf[SIZEOF_STR];
1145 config_errors = FALSE;
1147 if (!home || !string_format(buf, "%s/.tigrc", home))
1150 /* It's ok that the file doesn't exist. */
1151 file = fopen(buf, "r");
1155 if (read_properties(file, " \t", read_option) == ERR ||
1156 config_errors == TRUE)
1157 fprintf(stderr, "Errors while loading %s.\n", buf);
1170 /* The display array of active views and the index of the current view. */
1171 static struct view *display[2];
1172 static unsigned int current_view;
1174 /* Reading from the prompt? */
1175 static bool input_mode = FALSE;
1177 #define foreach_displayed_view(view, i) \
1178 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1180 #define displayed_views() (display[1] != NULL ? 2 : 1)
1182 /* Current head and commit ID */
1183 static char ref_blob[SIZEOF_REF] = "";
1184 static char ref_commit[SIZEOF_REF] = "HEAD";
1185 static char ref_head[SIZEOF_REF] = "HEAD";
1188 const char *name; /* View name */
1189 const char *cmd_fmt; /* Default command line format */
1190 const char *cmd_env; /* Command line set via environment */
1191 const char *id; /* Points to either of ref_{head,commit,blob} */
1193 struct view_ops *ops; /* View operations */
1195 enum keymap keymap; /* What keymap does this view have */
1197 char cmd[SIZEOF_STR]; /* Command buffer */
1198 char ref[SIZEOF_REF]; /* Hovered commit reference */
1199 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1201 int height, width; /* The width and height of the main window */
1202 WINDOW *win; /* The main window */
1203 WINDOW *title; /* The title window living below the main window */
1206 unsigned long offset; /* Offset of the window top */
1207 unsigned long lineno; /* Current line number */
1210 char grep[SIZEOF_STR]; /* Search string */
1211 regex_t *regex; /* Pre-compiled regex */
1213 /* If non-NULL, points to the view that opened this view. If this view
1214 * is closed tig will switch back to the parent view. */
1215 struct view *parent;
1218 unsigned long lines; /* Total number of lines */
1219 struct line *line; /* Line index */
1220 unsigned long line_size;/* Total number of allocated lines */
1221 unsigned int digits; /* Number of digits in the lines member. */
1229 /* What type of content being displayed. Used in the title bar. */
1231 /* Draw one line; @lineno must be < view->height. */
1232 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1233 /* Read one line; updates view->line. */
1234 bool (*read)(struct view *view, char *data);
1235 /* Depending on view, change display based on current line. */
1236 bool (*enter)(struct view *view, struct line *line);
1237 /* Search for regex in a line. */
1238 bool (*grep)(struct view *view, struct line *line);
1240 void (*select)(struct view *view, struct line *line);
1243 static struct view_ops pager_ops;
1244 static struct view_ops main_ops;
1245 static struct view_ops tree_ops;
1246 static struct view_ops blob_ops;
1248 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1249 { name, cmd, #env, ref, ops, map}
1251 #define VIEW_(id, name, ops, ref) \
1252 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1255 static struct view views[] = {
1256 VIEW_(MAIN, "main", &main_ops, ref_head),
1257 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1258 VIEW_(LOG, "log", &pager_ops, ref_head),
1259 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1260 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1261 VIEW_(HELP, "help", &pager_ops, "static"),
1262 VIEW_(PAGER, "pager", &pager_ops, "static"),
1265 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1267 #define foreach_view(view, i) \
1268 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1270 #define view_is_displayed(view) \
1271 (view == display[0] || view == display[1])
1274 draw_view_line(struct view *view, unsigned int lineno)
1277 bool selected = (view->offset + lineno == view->lineno);
1280 assert(view_is_displayed(view));
1282 if (view->offset + lineno >= view->lines)
1285 line = &view->line[view->offset + lineno];
1288 line->selected = TRUE;
1289 view->ops->select(view, line);
1290 } else if (line->selected) {
1291 line->selected = FALSE;
1292 wmove(view->win, lineno, 0);
1293 wclrtoeol(view->win);
1296 scrollok(view->win, FALSE);
1297 draw_ok = view->ops->draw(view, line, lineno, selected);
1298 scrollok(view->win, TRUE);
1304 redraw_view_from(struct view *view, int lineno)
1306 assert(0 <= lineno && lineno < view->height);
1308 for (; lineno < view->height; lineno++) {
1309 if (!draw_view_line(view, lineno))
1313 redrawwin(view->win);
1315 wnoutrefresh(view->win);
1317 wrefresh(view->win);
1321 redraw_view(struct view *view)
1324 redraw_view_from(view, 0);
1329 update_view_title(struct view *view)
1331 char buf[SIZEOF_STR];
1332 char state[SIZEOF_STR];
1333 size_t bufpos = 0, statelen = 0;
1335 assert(view_is_displayed(view));
1337 if (view->lines || view->pipe) {
1338 unsigned int view_lines = view->offset + view->height;
1339 unsigned int lines = view->lines
1340 ? MIN(view_lines, view->lines) * 100 / view->lines
1343 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1350 time_t secs = time(NULL) - view->start_time;
1352 /* Three git seconds are a long time ... */
1354 string_format_from(state, &statelen, " %lds", secs);
1358 string_format_from(buf, &bufpos, "[%s]", view->name);
1359 if (*view->ref && bufpos < view->width) {
1360 size_t refsize = strlen(view->ref);
1361 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1363 if (minsize < view->width)
1364 refsize = view->width - minsize + 7;
1365 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1368 if (statelen && bufpos < view->width) {
1369 string_format_from(buf, &bufpos, " %s", state);
1372 if (view == display[current_view])
1373 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1375 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1377 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1378 wclrtoeol(view->title);
1379 wmove(view->title, 0, view->width - 1);
1382 wnoutrefresh(view->title);
1384 wrefresh(view->title);
1388 resize_display(void)
1391 struct view *base = display[0];
1392 struct view *view = display[1] ? display[1] : display[0];
1394 /* Setup window dimensions */
1396 getmaxyx(stdscr, base->height, base->width);
1398 /* Make room for the status window. */
1402 /* Horizontal split. */
1403 view->width = base->width;
1404 view->height = SCALE_SPLIT_VIEW(base->height);
1405 base->height -= view->height;
1407 /* Make room for the title bar. */
1411 /* Make room for the title bar. */
1416 foreach_displayed_view (view, i) {
1418 view->win = newwin(view->height, 0, offset, 0);
1420 die("Failed to create %s view", view->name);
1422 scrollok(view->win, TRUE);
1424 view->title = newwin(1, 0, offset + view->height, 0);
1426 die("Failed to create title window");
1429 wresize(view->win, view->height, view->width);
1430 mvwin(view->win, offset, 0);
1431 mvwin(view->title, offset + view->height, 0);
1434 offset += view->height + 1;
1439 redraw_display(void)
1444 foreach_displayed_view (view, i) {
1446 update_view_title(view);
1451 update_display_cursor(struct view *view)
1453 /* Move the cursor to the right-most column of the cursor line.
1455 * XXX: This could turn out to be a bit expensive, but it ensures that
1456 * the cursor does not jump around. */
1458 wmove(view->win, view->lineno - view->offset, view->width - 1);
1459 wrefresh(view->win);
1467 /* Scrolling backend */
1469 do_scroll_view(struct view *view, int lines)
1471 bool redraw_current_line = FALSE;
1473 /* The rendering expects the new offset. */
1474 view->offset += lines;
1476 assert(0 <= view->offset && view->offset < view->lines);
1479 /* Move current line into the view. */
1480 if (view->lineno < view->offset) {
1481 view->lineno = view->offset;
1482 redraw_current_line = TRUE;
1483 } else if (view->lineno >= view->offset + view->height) {
1484 view->lineno = view->offset + view->height - 1;
1485 redraw_current_line = TRUE;
1488 assert(view->offset <= view->lineno && view->lineno < view->lines);
1490 /* Redraw the whole screen if scrolling is pointless. */
1491 if (view->height < ABS(lines)) {
1495 int line = lines > 0 ? view->height - lines : 0;
1496 int end = line + ABS(lines);
1498 wscrl(view->win, lines);
1500 for (; line < end; line++) {
1501 if (!draw_view_line(view, line))
1505 if (redraw_current_line)
1506 draw_view_line(view, view->lineno - view->offset);
1509 redrawwin(view->win);
1510 wrefresh(view->win);
1514 /* Scroll frontend */
1516 scroll_view(struct view *view, enum request request)
1520 assert(view_is_displayed(view));
1523 case REQ_SCROLL_PAGE_DOWN:
1524 lines = view->height;
1525 case REQ_SCROLL_LINE_DOWN:
1526 if (view->offset + lines > view->lines)
1527 lines = view->lines - view->offset;
1529 if (lines == 0 || view->offset + view->height >= view->lines) {
1530 report("Cannot scroll beyond the last line");
1535 case REQ_SCROLL_PAGE_UP:
1536 lines = view->height;
1537 case REQ_SCROLL_LINE_UP:
1538 if (lines > view->offset)
1539 lines = view->offset;
1542 report("Cannot scroll beyond the first line");
1550 die("request %d not handled in switch", request);
1553 do_scroll_view(view, lines);
1558 move_view(struct view *view, enum request request)
1560 int scroll_steps = 0;
1564 case REQ_MOVE_FIRST_LINE:
1565 steps = -view->lineno;
1568 case REQ_MOVE_LAST_LINE:
1569 steps = view->lines - view->lineno - 1;
1572 case REQ_MOVE_PAGE_UP:
1573 steps = view->height > view->lineno
1574 ? -view->lineno : -view->height;
1577 case REQ_MOVE_PAGE_DOWN:
1578 steps = view->lineno + view->height >= view->lines
1579 ? view->lines - view->lineno - 1 : view->height;
1591 die("request %d not handled in switch", request);
1594 if (steps <= 0 && view->lineno == 0) {
1595 report("Cannot move beyond the first line");
1598 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1599 report("Cannot move beyond the last line");
1603 /* Move the current line */
1604 view->lineno += steps;
1605 assert(0 <= view->lineno && view->lineno < view->lines);
1607 /* Check whether the view needs to be scrolled */
1608 if (view->lineno < view->offset ||
1609 view->lineno >= view->offset + view->height) {
1610 scroll_steps = steps;
1611 if (steps < 0 && -steps > view->offset) {
1612 scroll_steps = -view->offset;
1614 } else if (steps > 0) {
1615 if (view->lineno == view->lines - 1 &&
1616 view->lines > view->height) {
1617 scroll_steps = view->lines - view->offset - 1;
1618 if (scroll_steps >= view->height)
1619 scroll_steps -= view->height - 1;
1624 if (!view_is_displayed(view)) {
1625 view->offset += scroll_steps;
1626 assert(0 <= view->offset && view->offset < view->lines);
1627 view->ops->select(view, &view->line[view->lineno]);
1631 /* Repaint the old "current" line if we be scrolling */
1632 if (ABS(steps) < view->height)
1633 draw_view_line(view, view->lineno - steps - view->offset);
1636 do_scroll_view(view, scroll_steps);
1640 /* Draw the current line */
1641 draw_view_line(view, view->lineno - view->offset);
1643 redrawwin(view->win);
1644 wrefresh(view->win);
1653 static void search_view(struct view *view, enum request request);
1656 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1658 assert(view_is_displayed(view));
1660 if (!view->ops->grep(view, line))
1663 if (lineno - view->offset >= view->height) {
1664 view->offset = lineno;
1665 view->lineno = lineno;
1669 unsigned long old_lineno = view->lineno - view->offset;
1671 view->lineno = lineno;
1672 draw_view_line(view, old_lineno);
1674 draw_view_line(view, view->lineno - view->offset);
1675 redrawwin(view->win);
1676 wrefresh(view->win);
1679 report("Line %ld matches '%s'", lineno + 1, view->grep);
1684 find_next(struct view *view, enum request request)
1686 unsigned long lineno = view->lineno;
1691 report("No previous search");
1693 search_view(view, request);
1703 case REQ_SEARCH_BACK:
1712 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1713 lineno += direction;
1715 /* Note, lineno is unsigned long so will wrap around in which case it
1716 * will become bigger than view->lines. */
1717 for (; lineno < view->lines; lineno += direction) {
1718 struct line *line = &view->line[lineno];
1720 if (find_next_line(view, lineno, line))
1724 report("No match found for '%s'", view->grep);
1728 search_view(struct view *view, enum request request)
1733 regfree(view->regex);
1736 view->regex = calloc(1, sizeof(*view->regex));
1741 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1742 if (regex_err != 0) {
1743 char buf[SIZEOF_STR] = "unknown error";
1745 regerror(regex_err, view->regex, buf, sizeof(buf));
1746 report("Search failed: %s", buf);
1750 string_copy(view->grep, opt_search);
1752 find_next(view, request);
1756 * Incremental updating
1760 end_update(struct view *view)
1764 set_nonblocking_input(FALSE);
1765 if (view->pipe == stdin)
1773 begin_update(struct view *view)
1775 const char *id = view->id;
1781 string_copy(view->cmd, opt_cmd);
1783 /* When running random commands, the view ref could have become
1784 * invalid so clear it. */
1787 } else if (view == VIEW(REQ_VIEW_TREE)) {
1788 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1790 if (strcmp(view->vid, view->id))
1793 if (!string_format(view->cmd, format, id, opt_path))
1797 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1799 if (!string_format(view->cmd, format, id, id, id, id, id))
1803 /* Special case for the pager view. */
1805 view->pipe = opt_pipe;
1808 view->pipe = popen(view->cmd, "r");
1814 set_nonblocking_input(TRUE);
1819 string_copy(view->vid, id);
1824 for (i = 0; i < view->lines; i++)
1825 if (view->line[i].data)
1826 free(view->line[i].data);
1832 view->start_time = time(NULL);
1837 static struct line *
1838 realloc_lines(struct view *view, size_t line_size)
1840 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1846 view->line_size = line_size;
1851 update_view(struct view *view)
1853 char in_buffer[BUFSIZ];
1854 char out_buffer[BUFSIZ * 2];
1856 /* The number of lines to read. If too low it will cause too much
1857 * redrawing (and possible flickering), if too high responsiveness
1859 unsigned long lines = view->height;
1860 int redraw_from = -1;
1865 /* Only redraw if lines are visible. */
1866 if (view->offset + view->height >= view->lines)
1867 redraw_from = view->lines - view->offset;
1869 /* FIXME: This is probably not perfect for backgrounded views. */
1870 if (!realloc_lines(view, view->lines + lines))
1873 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1874 size_t linelen = strlen(line);
1877 line[linelen - 1] = 0;
1879 if (opt_iconv != ICONV_NONE) {
1881 size_t inlen = linelen;
1883 char *outbuf = out_buffer;
1884 size_t outlen = sizeof(out_buffer);
1888 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1889 if (ret != (size_t) -1) {
1891 linelen = strlen(out_buffer);
1895 if (!view->ops->read(view, line))
1905 lines = view->lines;
1906 for (digits = 0; lines; digits++)
1909 /* Keep the displayed view in sync with line number scaling. */
1910 if (digits != view->digits) {
1911 view->digits = digits;
1916 if (!view_is_displayed(view))
1919 if (view == VIEW(REQ_VIEW_TREE)) {
1920 /* Clear the view and redraw everything since the tree sorting
1921 * might have rearranged things. */
1924 } else if (redraw_from >= 0) {
1925 /* If this is an incremental update, redraw the previous line
1926 * since for commits some members could have changed when
1927 * loading the main view. */
1928 if (redraw_from > 0)
1931 /* Since revision graph visualization requires knowledge
1932 * about the parent commit, it causes a further one-off
1933 * needed to be redrawn for incremental updates. */
1934 if (redraw_from > 0 && opt_rev_graph)
1937 /* Incrementally draw avoids flickering. */
1938 redraw_view_from(view, redraw_from);
1941 /* Update the title _after_ the redraw so that if the redraw picks up a
1942 * commit reference in view->ref it'll be available here. */
1943 update_view_title(view);
1946 if (ferror(view->pipe)) {
1947 report("Failed to read: %s", strerror(errno));
1950 } else if (feof(view->pipe)) {
1958 report("Allocation failure");
1961 view->ops->read(view, NULL);
1966 static struct line *
1967 add_line_text(struct view *view, char *data, enum line_type type)
1969 struct line *line = &view->line[view->lines];
1974 line->data = strdup(data);
1989 static void open_help_view(struct view *view)
1992 int lines = ARRAY_SIZE(req_info) + 2;
1995 if (view->lines > 0)
1998 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1999 if (!req_info[i].request)
2002 view->line = calloc(lines, sizeof(*view->line));
2004 report("Allocation failure");
2008 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2010 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2013 if (!req_info[i].request) {
2014 add_line_text(view, "", LINE_DEFAULT);
2015 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2019 key = get_key(req_info[i].request);
2020 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
2023 add_line_text(view, buf, LINE_DEFAULT);
2028 OPEN_DEFAULT = 0, /* Use default view switching. */
2029 OPEN_SPLIT = 1, /* Split current view. */
2030 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2031 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2035 open_view(struct view *prev, enum request request, enum open_flags flags)
2037 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2038 bool split = !!(flags & OPEN_SPLIT);
2039 bool reload = !!(flags & OPEN_RELOAD);
2040 struct view *view = VIEW(request);
2041 int nviews = displayed_views();
2042 struct view *base_view = display[0];
2044 if (view == prev && nviews == 1 && !reload) {
2045 report("Already in %s view", view->name);
2049 if (view == VIEW(REQ_VIEW_HELP)) {
2050 open_help_view(view);
2052 } else if ((reload || strcmp(view->vid, view->id)) &&
2053 !begin_update(view)) {
2054 report("Failed to load %s view", view->name);
2063 /* Maximize the current view. */
2064 memset(display, 0, sizeof(display));
2066 display[current_view] = view;
2069 /* Resize the view when switching between split- and full-screen,
2070 * or when switching between two different full-screen views. */
2071 if (nviews != displayed_views() ||
2072 (nviews == 1 && base_view != display[0]))
2075 if (split && prev->lineno - prev->offset >= prev->height) {
2076 /* Take the title line into account. */
2077 int lines = prev->lineno - prev->offset - prev->height + 1;
2079 /* Scroll the view that was split if the current line is
2080 * outside the new limited view. */
2081 do_scroll_view(prev, lines);
2084 if (prev && view != prev) {
2085 if (split && !backgrounded) {
2086 /* "Blur" the previous view. */
2087 update_view_title(prev);
2090 view->parent = prev;
2093 if (view->pipe && view->lines == 0) {
2094 /* Clear the old view and let the incremental updating refill
2103 /* If the view is backgrounded the above calls to report()
2104 * won't redraw the view title. */
2106 update_view_title(view);
2111 * User request switch noodle
2115 view_driver(struct view *view, enum request request)
2122 case REQ_MOVE_PAGE_UP:
2123 case REQ_MOVE_PAGE_DOWN:
2124 case REQ_MOVE_FIRST_LINE:
2125 case REQ_MOVE_LAST_LINE:
2126 move_view(view, request);
2129 case REQ_SCROLL_LINE_DOWN:
2130 case REQ_SCROLL_LINE_UP:
2131 case REQ_SCROLL_PAGE_DOWN:
2132 case REQ_SCROLL_PAGE_UP:
2133 scroll_view(view, request);
2138 report("No file chosen, press 't' to open tree view");
2147 case REQ_VIEW_PAGER:
2148 open_view(view, request, OPEN_DEFAULT);
2153 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2155 if ((view == VIEW(REQ_VIEW_DIFF) &&
2156 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2157 (view == VIEW(REQ_VIEW_BLOB) &&
2158 view->parent == VIEW(REQ_VIEW_TREE))) {
2159 view = view->parent;
2160 move_view(view, request);
2161 if (view_is_displayed(view))
2162 update_view_title(view);
2164 move_view(view, request);
2171 report("Nothing to enter");
2174 return view->ops->enter(view, &view->line[view->lineno]);
2178 int nviews = displayed_views();
2179 int next_view = (current_view + 1) % nviews;
2181 if (next_view == current_view) {
2182 report("Only one view is displayed");
2186 current_view = next_view;
2187 /* Blur out the title of the previous view. */
2188 update_view_title(view);
2192 case REQ_TOGGLE_LINENO:
2193 opt_line_number = !opt_line_number;
2197 case REQ_TOGGLE_REV_GRAPH:
2198 opt_rev_graph = !opt_rev_graph;
2203 /* Always reload^Wrerun commands from the prompt. */
2204 open_view(view, opt_request, OPEN_RELOAD);
2208 case REQ_SEARCH_BACK:
2209 search_view(view, request);
2214 find_next(view, request);
2217 case REQ_STOP_LOADING:
2218 for (i = 0; i < ARRAY_SIZE(views); i++) {
2221 report("Stopped loading the %s view", view->name),
2226 case REQ_SHOW_VERSION:
2227 report("%s (built %s)", VERSION, __DATE__);
2230 case REQ_SCREEN_RESIZE:
2233 case REQ_SCREEN_REDRAW:
2241 case REQ_VIEW_CLOSE:
2242 /* XXX: Mark closed views by letting view->parent point to the
2243 * view itself. Parents to closed view should never be
2246 view->parent->parent != view->parent) {
2247 memset(display, 0, sizeof(display));
2249 display[current_view] = view->parent;
2250 view->parent = view;
2260 /* An unknown key will show most commonly used commands. */
2261 report("Unknown key, press 'h' for help");
2274 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2276 char *text = line->data;
2277 enum line_type type = line->type;
2278 int textlen = strlen(text);
2281 wmove(view->win, lineno, 0);
2285 wchgat(view->win, -1, 0, type, NULL);
2288 attr = get_line_attr(type);
2289 wattrset(view->win, attr);
2291 if (opt_line_number || opt_tab_size < TABSIZE) {
2292 static char spaces[] = " ";
2293 int col_offset = 0, col = 0;
2295 if (opt_line_number) {
2296 unsigned long real_lineno = view->offset + lineno + 1;
2298 if (real_lineno == 1 ||
2299 (real_lineno % opt_num_interval) == 0) {
2300 wprintw(view->win, "%.*d", view->digits, real_lineno);
2303 waddnstr(view->win, spaces,
2304 MIN(view->digits, STRING_SIZE(spaces)));
2306 waddstr(view->win, ": ");
2307 col_offset = view->digits + 2;
2310 while (text && col_offset + col < view->width) {
2311 int cols_max = view->width - col_offset - col;
2315 if (*text == '\t') {
2317 assert(sizeof(spaces) > TABSIZE);
2319 cols = opt_tab_size - (col % opt_tab_size);
2322 text = strchr(text, '\t');
2323 cols = line ? text - pos : strlen(pos);
2326 waddnstr(view->win, pos, MIN(cols, cols_max));
2331 int col = 0, pos = 0;
2333 for (; pos < textlen && col < view->width; pos++, col++)
2334 if (text[pos] == '\t')
2335 col += TABSIZE - (col % TABSIZE) - 1;
2337 waddnstr(view->win, text, pos);
2344 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2346 char refbuf[SIZEOF_STR];
2350 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2353 pipe = popen(refbuf, "r");
2357 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2358 ref = chomp_string(ref);
2364 /* This is the only fatal call, since it can "corrupt" the buffer. */
2365 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2372 add_pager_refs(struct view *view, struct line *line)
2374 char buf[SIZEOF_STR];
2375 char *commit_id = line->data + STRING_SIZE("commit ");
2377 size_t bufpos = 0, refpos = 0;
2378 const char *sep = "Refs: ";
2379 bool is_tag = FALSE;
2381 assert(line->type == LINE_COMMIT);
2383 refs = get_refs(commit_id);
2385 if (view == VIEW(REQ_VIEW_DIFF))
2386 goto try_add_describe_ref;
2391 struct ref *ref = refs[refpos];
2392 char *fmt = ref->tag ? "%s[%s]" :
2393 ref->remote ? "%s<%s>" : "%s%s";
2395 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2400 } while (refs[refpos++]->next);
2402 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2403 try_add_describe_ref:
2404 /* Add <tag>-g<commit_id> "fake" reference. */
2405 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2412 if (!realloc_lines(view, view->line_size + 1))
2415 add_line_text(view, buf, LINE_PP_REFS);
2419 pager_read(struct view *view, char *data)
2426 line = add_line_text(view, data, get_line_type(data));
2430 if (line->type == LINE_COMMIT &&
2431 (view == VIEW(REQ_VIEW_DIFF) ||
2432 view == VIEW(REQ_VIEW_LOG)))
2433 add_pager_refs(view, line);
2439 pager_enter(struct view *view, struct line *line)
2443 if (line->type == LINE_COMMIT &&
2444 (view == VIEW(REQ_VIEW_LOG) ||
2445 view == VIEW(REQ_VIEW_PAGER))) {
2446 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2450 /* Always scroll the view even if it was split. That way
2451 * you can use Enter to scroll through the log view and
2452 * split open each commit diff. */
2453 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2455 /* FIXME: A minor workaround. Scrolling the view will call report("")
2456 * but if we are scrolling a non-current view this won't properly
2457 * update the view title. */
2459 update_view_title(view);
2465 pager_grep(struct view *view, struct line *line)
2468 char *text = line->data;
2473 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2480 pager_select(struct view *view, struct line *line)
2482 if (line->type == LINE_COMMIT) {
2483 char *text = line->data;
2485 string_copy(view->ref, text + STRING_SIZE("commit "));
2486 string_copy(ref_commit, view->ref);
2490 static struct view_ops pager_ops = {
2504 /* Parse output from git-ls-tree(1):
2506 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2507 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2508 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2509 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2512 #define SIZEOF_TREE_ATTR \
2513 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2515 #define TREE_UP_FORMAT "040000 tree %s\t.."
2518 tree_compare_entry(enum line_type type1, char *name1,
2519 enum line_type type2, char *name2)
2521 if (type1 != type2) {
2522 if (type1 == LINE_TREE_DIR)
2527 return strcmp(name1, name2);
2531 tree_read(struct view *view, char *text)
2533 size_t textlen = text ? strlen(text) : 0;
2534 char buf[SIZEOF_STR];
2536 enum line_type type;
2537 bool first_read = view->lines == 0;
2539 if (textlen <= SIZEOF_TREE_ATTR)
2542 type = text[STRING_SIZE("100644 ")] == 't'
2543 ? LINE_TREE_DIR : LINE_TREE_FILE;
2546 /* Add path info line */
2547 if (!string_format(buf, "Directory path /%s", opt_path) ||
2548 !realloc_lines(view, view->line_size + 1) ||
2549 !add_line_text(view, buf, LINE_DEFAULT))
2552 /* Insert "link" to parent directory. */
2554 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2555 !realloc_lines(view, view->line_size + 1) ||
2556 !add_line_text(view, buf, LINE_TREE_DIR))
2561 /* Strip the path part ... */
2563 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2564 size_t striplen = strlen(opt_path);
2565 char *path = text + SIZEOF_TREE_ATTR;
2567 if (pathlen > striplen)
2568 memmove(path, path + striplen,
2569 pathlen - striplen + 1);
2572 /* Skip "Directory ..." and ".." line. */
2573 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2574 struct line *line = &view->line[pos];
2575 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2576 char *path2 = text + SIZEOF_TREE_ATTR;
2577 int cmp = tree_compare_entry(line->type, path1, type, path2);
2582 text = strdup(text);
2586 if (view->lines > pos)
2587 memmove(&view->line[pos + 1], &view->line[pos],
2588 (view->lines - pos) * sizeof(*line));
2590 line = &view->line[pos];
2597 if (!add_line_text(view, text, type))
2600 /* Move the current line to the first tree entry. */
2608 tree_enter(struct view *view, struct line *line)
2610 enum open_flags flags;
2611 enum request request;
2613 switch (line->type) {
2615 /* Depending on whether it is a subdir or parent (updir?) link
2616 * mangle the path buffer. */
2617 if (line == &view->line[1] && *opt_path) {
2618 size_t path_len = strlen(opt_path);
2619 char *dirsep = opt_path + path_len - 1;
2621 while (dirsep > opt_path && dirsep[-1] != '/')
2627 size_t pathlen = strlen(opt_path);
2628 size_t origlen = pathlen;
2629 char *data = line->data;
2630 char *basename = data + SIZEOF_TREE_ATTR;
2632 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2633 opt_path[origlen] = 0;
2638 /* Trees and subtrees share the same ID, so they are not not
2639 * unique like blobs. */
2640 flags = OPEN_RELOAD;
2641 request = REQ_VIEW_TREE;
2644 case LINE_TREE_FILE:
2645 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2646 request = REQ_VIEW_BLOB;
2653 open_view(view, request, flags);
2659 tree_select(struct view *view, struct line *line)
2661 char *text = line->data;
2663 text += STRING_SIZE("100644 blob ");
2665 if (line->type == LINE_TREE_FILE) {
2666 string_ncopy(ref_blob, text, 40);
2667 /* Also update the blob view's ref, since all there must always
2669 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2671 } else if (line->type != LINE_TREE_DIR) {
2675 string_ncopy(view->ref, text, 40);
2678 static struct view_ops tree_ops = {
2688 blob_read(struct view *view, char *line)
2690 return add_line_text(view, line, LINE_DEFAULT);
2693 static struct view_ops blob_ops = {
2708 char id[SIZEOF_REV]; /* SHA1 ID. */
2709 char title[128]; /* First line of the commit message. */
2710 char author[75]; /* Author of the commit. */
2711 struct tm time; /* Date from the author ident. */
2712 struct ref **refs; /* Repository references. */
2713 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2714 size_t graph_size; /* The width of the graph array. */
2717 /* Size of rev graph with no "padding" columns */
2718 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2721 struct rev_graph *prev, *next, *parents;
2722 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2724 struct commit *commit;
2728 /* Parents of the commit being visualized. */
2729 static struct rev_graph graph_parents[4];
2731 /* The current stack of revisions on the graph. */
2732 static struct rev_graph graph_stacks[4] = {
2733 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
2734 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2735 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
2736 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
2740 graph_parent_is_merge(struct rev_graph *graph)
2742 return graph->parents->size > 1;
2746 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
2748 struct commit *commit = graph->commit;
2750 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
2751 commit->graph[commit->graph_size++] = symbol;
2755 done_rev_graph(struct rev_graph *graph)
2757 if (graph_parent_is_merge(graph) &&
2758 graph->pos < graph->size - 1 &&
2759 graph->next->size == graph->size + graph->parents->size - 1) {
2760 size_t i = graph->pos + graph->parents->size - 1;
2762 graph->commit->graph_size = i * 2;
2763 while (i < graph->next->size - 1) {
2764 append_to_rev_graph(graph, ' ');
2765 append_to_rev_graph(graph, '\\');
2770 graph->size = graph->pos = 0;
2771 graph->commit = NULL;
2772 memset(graph->parents, 0, sizeof(*graph->parents));
2776 push_rev_graph(struct rev_graph *graph, char *parent)
2780 /* "Collapse" duplicate parents lines.
2782 * FIXME: This needs to also update update the drawn graph but
2783 * for now it just serves as a method for pruning graph lines. */
2784 for (i = 0; i < graph->size; i++)
2785 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
2788 if (graph->size < SIZEOF_REVITEMS) {
2789 string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV);
2794 get_rev_graph_symbol(struct rev_graph *graph)
2798 if (graph->parents->size == 0)
2799 symbol = REVGRAPH_INIT;
2800 else if (graph_parent_is_merge(graph))
2801 symbol = REVGRAPH_MERGE;
2802 else if (graph->pos >= graph->size)
2803 symbol = REVGRAPH_BRANCH;
2805 symbol = REVGRAPH_COMMIT;
2811 draw_rev_graph(struct rev_graph *graph)
2814 chtype separator, line;
2816 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
2817 static struct rev_filler fillers[] = {
2818 { ' ', REVGRAPH_LINE },
2823 chtype symbol = get_rev_graph_symbol(graph);
2824 struct rev_filler *filler;
2827 filler = &fillers[DEFAULT];
2829 for (i = 0; i < graph->pos; i++) {
2830 append_to_rev_graph(graph, filler->line);
2831 if (graph_parent_is_merge(graph->prev) &&
2832 graph->prev->pos == i)
2833 filler = &fillers[RSHARP];
2835 append_to_rev_graph(graph, filler->separator);
2838 /* Place the symbol for this revision. */
2839 append_to_rev_graph(graph, symbol);
2841 if (graph->prev->size > graph->size)
2842 filler = &fillers[RDIAG];
2844 filler = &fillers[DEFAULT];
2848 for (; i < graph->size; i++) {
2849 append_to_rev_graph(graph, filler->separator);
2850 append_to_rev_graph(graph, filler->line);
2851 if (graph_parent_is_merge(graph->prev) &&
2852 i < graph->prev->pos + graph->parents->size)
2853 filler = &fillers[RSHARP];
2854 if (graph->prev->size > graph->size)
2855 filler = &fillers[LDIAG];
2858 if (graph->prev->size > graph->size) {
2859 append_to_rev_graph(graph, filler->separator);
2860 if (filler->line != ' ')
2861 append_to_rev_graph(graph, filler->line);
2865 /* Prepare the next rev graph */
2867 prepare_rev_graph(struct rev_graph *graph)
2871 /* First, traverse all lines of revisions up to the active one. */
2872 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2873 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2876 push_rev_graph(graph->next, graph->rev[graph->pos]);
2879 /* Interleave the new revision parent(s). */
2880 for (i = 0; i < graph->parents->size; i++)
2881 push_rev_graph(graph->next, graph->parents->rev[i]);
2883 /* Lastly, put any remaining revisions. */
2884 for (i = graph->pos + 1; i < graph->size; i++)
2885 push_rev_graph(graph->next, graph->rev[i]);
2889 update_rev_graph(struct rev_graph *graph)
2891 /* If this is the finalizing update ... */
2893 prepare_rev_graph(graph);
2895 /* Graph visualization needs a one rev look-ahead,
2896 * so the first update doesn't visualize anything. */
2897 if (!graph->prev->commit)
2900 draw_rev_graph(graph->prev);
2901 done_rev_graph(graph->prev->prev);
2910 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2912 char buf[DATE_COLS + 1];
2913 struct commit *commit = line->data;
2914 enum line_type type;
2920 if (!*commit->author)
2923 wmove(view->win, lineno, col);
2927 wattrset(view->win, get_line_attr(type));
2928 wchgat(view->win, -1, 0, type, NULL);
2931 type = LINE_MAIN_COMMIT;
2932 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2935 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2936 waddnstr(view->win, buf, timelen);
2937 waddstr(view->win, " ");
2940 wmove(view->win, lineno, col);
2941 if (type != LINE_CURSOR)
2942 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2945 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2947 authorlen = strlen(commit->author);
2948 if (authorlen > AUTHOR_COLS - 2) {
2949 authorlen = AUTHOR_COLS - 2;
2955 waddnstr(view->win, commit->author, authorlen);
2956 if (type != LINE_CURSOR)
2957 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2958 waddch(view->win, '~');
2960 waddstr(view->win, commit->author);
2964 if (type != LINE_CURSOR)
2965 wattrset(view->win, A_NORMAL);
2967 if (opt_rev_graph && commit->graph_size) {
2970 wmove(view->win, lineno, col);
2971 /* Using waddch() instead of waddnstr() ensures that
2972 * they'll be rendered correctly for the cursor line. */
2973 for (i = 0; i < commit->graph_size; i++)
2974 waddch(view->win, commit->graph[i]);
2976 waddch(view->win, ' ');
2977 col += commit->graph_size + 1;
2980 wmove(view->win, lineno, col);
2986 if (type == LINE_CURSOR)
2988 else if (commit->refs[i]->tag)
2989 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2990 else if (commit->refs[i]->remote)
2991 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
2993 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2994 waddstr(view->win, "[");
2995 waddstr(view->win, commit->refs[i]->name);
2996 waddstr(view->win, "]");
2997 if (type != LINE_CURSOR)
2998 wattrset(view->win, A_NORMAL);
2999 waddstr(view->win, " ");
3000 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3001 } while (commit->refs[i++]->next);
3004 if (type != LINE_CURSOR)
3005 wattrset(view->win, get_line_attr(type));
3008 int titlelen = strlen(commit->title);
3010 if (col + titlelen > view->width)
3011 titlelen = view->width - col;
3013 waddnstr(view->win, commit->title, titlelen);
3019 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3021 main_read(struct view *view, char *line)
3023 static struct rev_graph *graph = graph_stacks;
3024 enum line_type type;
3025 struct commit *commit = view->lines
3026 ? view->line[view->lines - 1].data : NULL;
3029 update_rev_graph(graph);
3033 type = get_line_type(line);
3037 commit = calloc(1, sizeof(struct commit));
3041 line += STRING_SIZE("commit ");
3043 view->line[view->lines++].data = commit;
3044 string_copy(commit->id, line);
3045 commit->refs = get_refs(commit->id);
3046 graph->commit = commit;
3051 line += STRING_SIZE("parent ");
3052 push_rev_graph(graph->parents, line);
3058 /* Parse author lines where the name may be empty:
3059 * author <email@address.tld> 1138474660 +0100
3061 char *ident = line + STRING_SIZE("author ");
3062 char *nameend = strchr(ident, '<');
3063 char *emailend = strchr(ident, '>');
3065 if (!commit || !nameend || !emailend)
3068 update_rev_graph(graph);
3069 graph = graph->next;
3071 *nameend = *emailend = 0;
3072 ident = chomp_string(ident);
3074 ident = chomp_string(nameend + 1);
3079 string_copy(commit->author, ident);
3081 /* Parse epoch and timezone */
3082 if (emailend[1] == ' ') {
3083 char *secs = emailend + 2;
3084 char *zone = strchr(secs, ' ');
3085 time_t time = (time_t) atol(secs);
3087 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3091 tz = ('0' - zone[1]) * 60 * 60 * 10;
3092 tz += ('0' - zone[2]) * 60 * 60;
3093 tz += ('0' - zone[3]) * 60;
3094 tz += ('0' - zone[4]) * 60;
3102 gmtime_r(&time, &commit->time);
3110 /* Fill in the commit title if it has not already been set. */
3111 if (commit->title[0])
3114 /* Require titles to start with a non-space character at the
3115 * offset used by git log. */
3116 if (strncmp(line, " ", 4))
3119 /* Well, if the title starts with a whitespace character,
3120 * try to be forgiving. Otherwise we end up with no title. */
3121 while (isspace(*line))
3125 /* FIXME: More graceful handling of titles; append "..." to
3126 * shortened titles, etc. */
3128 string_copy(commit->title, line);
3135 main_enter(struct view *view, struct line *line)
3137 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3139 open_view(view, REQ_VIEW_DIFF, flags);
3144 main_grep(struct view *view, struct line *line)
3146 struct commit *commit = line->data;
3147 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3148 char buf[DATE_COLS + 1];
3151 for (state = S_TITLE; state < S_END; state++) {
3155 case S_TITLE: text = commit->title; break;
3156 case S_AUTHOR: text = commit->author; break;
3158 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3167 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3175 main_select(struct view *view, struct line *line)
3177 struct commit *commit = line->data;
3179 string_copy(view->ref, commit->id);
3180 string_copy(ref_commit, view->ref);
3183 static struct view_ops main_ops = {
3194 * Unicode / UTF-8 handling
3196 * NOTE: Much of the following code for dealing with unicode is derived from
3197 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3198 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3201 /* I've (over)annotated a lot of code snippets because I am not entirely
3202 * confident that the approach taken by this small UTF-8 interface is correct.
3206 unicode_width(unsigned long c)
3209 (c <= 0x115f /* Hangul Jamo */
3212 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3214 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3215 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3216 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3217 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3218 || (c >= 0xffe0 && c <= 0xffe6)
3219 || (c >= 0x20000 && c <= 0x2fffd)
3220 || (c >= 0x30000 && c <= 0x3fffd)))
3226 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3227 * Illegal bytes are set one. */
3228 static const unsigned char utf8_bytes[256] = {
3229 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,
3230 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,
3231 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,
3232 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,
3233 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,
3234 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,
3235 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,
3236 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,
3239 /* Decode UTF-8 multi-byte representation into a unicode character. */
3240 static inline unsigned long
3241 utf8_to_unicode(const char *string, size_t length)
3243 unsigned long unicode;
3247 unicode = string[0];
3250 unicode = (string[0] & 0x1f) << 6;
3251 unicode += (string[1] & 0x3f);
3254 unicode = (string[0] & 0x0f) << 12;
3255 unicode += ((string[1] & 0x3f) << 6);
3256 unicode += (string[2] & 0x3f);
3259 unicode = (string[0] & 0x0f) << 18;
3260 unicode += ((string[1] & 0x3f) << 12);
3261 unicode += ((string[2] & 0x3f) << 6);
3262 unicode += (string[3] & 0x3f);
3265 unicode = (string[0] & 0x0f) << 24;
3266 unicode += ((string[1] & 0x3f) << 18);
3267 unicode += ((string[2] & 0x3f) << 12);
3268 unicode += ((string[3] & 0x3f) << 6);
3269 unicode += (string[4] & 0x3f);
3272 unicode = (string[0] & 0x01) << 30;
3273 unicode += ((string[1] & 0x3f) << 24);
3274 unicode += ((string[2] & 0x3f) << 18);
3275 unicode += ((string[3] & 0x3f) << 12);
3276 unicode += ((string[4] & 0x3f) << 6);
3277 unicode += (string[5] & 0x3f);
3280 die("Invalid unicode length");
3283 /* Invalid characters could return the special 0xfffd value but NUL
3284 * should be just as good. */
3285 return unicode > 0xffff ? 0 : unicode;
3288 /* Calculates how much of string can be shown within the given maximum width
3289 * and sets trimmed parameter to non-zero value if all of string could not be
3292 * Additionally, adds to coloffset how many many columns to move to align with
3293 * the expected position. Takes into account how multi-byte and double-width
3294 * characters will effect the cursor position.
3296 * Returns the number of bytes to output from string to satisfy max_width. */
3298 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3300 const char *start = string;
3301 const char *end = strchr(string, '\0');
3307 while (string < end) {
3308 int c = *(unsigned char *) string;
3309 unsigned char bytes = utf8_bytes[c];
3311 unsigned long unicode;
3313 if (string + bytes > end)
3316 /* Change representation to figure out whether
3317 * it is a single- or double-width character. */
3319 unicode = utf8_to_unicode(string, bytes);
3320 /* FIXME: Graceful handling of invalid unicode character. */
3324 ucwidth = unicode_width(unicode);
3326 if (width > max_width) {
3331 /* The column offset collects the differences between the
3332 * number of bytes encoding a character and the number of
3333 * columns will be used for rendering said character.
3335 * So if some character A is encoded in 2 bytes, but will be
3336 * represented on the screen using only 1 byte this will and up
3337 * adding 1 to the multi-byte column offset.
3339 * Assumes that no double-width character can be encoding in
3340 * less than two bytes. */
3341 if (bytes > ucwidth)
3342 mbwidth += bytes - ucwidth;
3347 *coloffset += mbwidth;
3349 return string - start;
3357 /* Whether or not the curses interface has been initialized. */
3358 static bool cursed = FALSE;
3360 /* The status window is used for polling keystrokes. */
3361 static WINDOW *status_win;
3363 static bool status_empty = TRUE;
3365 /* Update status and title window. */
3367 report(const char *msg, ...)
3369 struct view *view = display[current_view];
3374 if (!status_empty || *msg) {
3377 va_start(args, msg);
3379 wmove(status_win, 0, 0);
3381 vwprintw(status_win, msg, args);
3382 status_empty = FALSE;
3384 status_empty = TRUE;
3386 wclrtoeol(status_win);
3387 wrefresh(status_win);
3392 update_view_title(view);
3393 update_display_cursor(view);
3396 /* Controls when nodelay should be in effect when polling user input. */
3398 set_nonblocking_input(bool loading)
3400 static unsigned int loading_views;
3402 if ((loading == FALSE && loading_views-- == 1) ||
3403 (loading == TRUE && loading_views++ == 0))
3404 nodelay(status_win, loading);
3412 /* Initialize the curses library */
3413 if (isatty(STDIN_FILENO)) {
3414 cursed = !!initscr();
3416 /* Leave stdin and stdout alone when acting as a pager. */
3417 FILE *io = fopen("/dev/tty", "r+");
3420 die("Failed to open /dev/tty");
3421 cursed = !!newterm(NULL, io, io);
3425 die("Failed to initialize curses");
3427 nonl(); /* Tell curses not to do NL->CR/NL on output */
3428 cbreak(); /* Take input chars one at a time, no wait for \n */
3429 noecho(); /* Don't echo input */
3430 leaveok(stdscr, TRUE);
3435 getmaxyx(stdscr, y, x);
3436 status_win = newwin(1, 0, y - 1, 0);
3438 die("Failed to create status window");
3440 /* Enable keyboard mapping */
3441 keypad(status_win, TRUE);
3442 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3446 read_prompt(const char *prompt)
3448 enum { READING, STOP, CANCEL } status = READING;
3449 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3452 while (status == READING) {
3458 foreach_view (view, i)
3463 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3464 wclrtoeol(status_win);
3466 /* Refresh, accept single keystroke of input */
3467 key = wgetch(status_win);
3472 status = pos ? STOP : CANCEL;
3490 if (pos >= sizeof(buf)) {
3491 report("Input string too long");
3496 buf[pos++] = (char) key;
3500 /* Clear the status window */
3501 status_empty = FALSE;
3504 if (status == CANCEL)
3513 * Repository references
3516 static struct ref *refs;
3517 static size_t refs_size;
3519 /* Id <-> ref store */
3520 static struct ref ***id_refs;
3521 static size_t id_refs_size;
3523 static struct ref **
3526 struct ref ***tmp_id_refs;
3527 struct ref **ref_list = NULL;
3528 size_t ref_list_size = 0;
3531 for (i = 0; i < id_refs_size; i++)
3532 if (!strcmp(id, id_refs[i][0]->id))
3535 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3539 id_refs = tmp_id_refs;
3541 for (i = 0; i < refs_size; i++) {
3544 if (strcmp(id, refs[i].id))
3547 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3555 if (ref_list_size > 0)
3556 ref_list[ref_list_size - 1]->next = 1;
3557 ref_list[ref_list_size] = &refs[i];
3559 /* XXX: The properties of the commit chains ensures that we can
3560 * safely modify the shared ref. The repo references will
3561 * always be similar for the same id. */
3562 ref_list[ref_list_size]->next = 0;
3567 id_refs[id_refs_size++] = ref_list;
3573 read_ref(char *id, int idlen, char *name, int namelen)
3577 bool remote = FALSE;
3579 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3580 /* Commits referenced by tags has "^{}" appended. */
3581 if (name[namelen - 1] != '}')
3584 while (namelen > 0 && name[namelen] != '^')
3588 namelen -= STRING_SIZE("refs/tags/");
3589 name += STRING_SIZE("refs/tags/");
3591 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
3593 namelen -= STRING_SIZE("refs/remotes/");
3594 name += STRING_SIZE("refs/remotes/");
3596 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3597 namelen -= STRING_SIZE("refs/heads/");
3598 name += STRING_SIZE("refs/heads/");
3600 } else if (!strcmp(name, "HEAD")) {
3604 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3608 ref = &refs[refs_size++];
3609 ref->name = malloc(namelen + 1);
3613 strncpy(ref->name, name, namelen);
3614 ref->name[namelen] = 0;
3616 ref->remote = remote;
3617 string_copy(ref->id, id);
3625 const char *cmd_env = getenv("TIG_LS_REMOTE");
3626 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3628 return read_properties(popen(cmd, "r"), "\t", read_ref);
3632 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3634 if (!strcmp(name, "i18n.commitencoding"))
3635 string_copy(opt_encoding, value);
3641 load_repo_config(void)
3643 return read_properties(popen("git repo-config --list", "r"),
3644 "=", read_repo_config_option);
3648 read_properties(FILE *pipe, const char *separators,
3649 int (*read_property)(char *, int, char *, int))
3651 char buffer[BUFSIZ];
3658 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3663 name = chomp_string(name);
3664 namelen = strcspn(name, separators);
3666 if (name[namelen]) {
3668 value = chomp_string(name + namelen + 1);
3669 valuelen = strlen(value);
3676 state = read_property(name, namelen, value, valuelen);
3679 if (state != ERR && ferror(pipe))
3692 static void __NORETURN
3695 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3701 static void __NORETURN
3702 die(const char *err, ...)
3708 va_start(args, err);
3709 fputs("tig: ", stderr);
3710 vfprintf(stderr, err, args);
3711 fputs("\n", stderr);
3718 main(int argc, char *argv[])
3721 enum request request;
3724 signal(SIGINT, quit);
3726 if (setlocale(LC_ALL, "")) {
3727 string_copy(opt_codeset, nl_langinfo(CODESET));
3730 if (load_options() == ERR)
3731 die("Failed to load user config.");
3733 /* Load the repo config file so options can be overwritten from
3734 * the command line. */
3735 if (load_repo_config() == ERR)
3736 die("Failed to load repo config.");
3738 if (!parse_options(argc, argv))
3741 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3742 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3743 if (opt_iconv == ICONV_NONE)
3744 die("Failed to initialize character set conversion");
3747 if (load_refs() == ERR)
3748 die("Failed to load refs.");
3750 /* Require a git repository unless when running in pager mode. */
3751 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3752 die("Not a git repository");
3754 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3755 view->cmd_env = getenv(view->cmd_env);
3757 request = opt_request;
3761 while (view_driver(display[current_view], request)) {
3765 foreach_view (view, i)
3768 /* Refresh, accept single keystroke of input */
3769 key = wgetch(status_win);
3771 /* wgetch() with nodelay() enabled returns ERR when there's no
3778 request = get_keybinding(display[current_view]->keymap, key);
3780 /* Some low-level request handling. This keeps access to
3781 * status_win restricted. */
3785 char *cmd = read_prompt(":");
3787 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3788 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3789 opt_request = REQ_VIEW_DIFF;
3791 opt_request = REQ_VIEW_PAGER;
3800 case REQ_SEARCH_BACK:
3802 const char *prompt = request == REQ_SEARCH
3804 char *search = read_prompt(prompt);
3807 string_copy(opt_search, search);
3812 case REQ_SCREEN_RESIZE:
3816 getmaxyx(stdscr, height, width);
3818 /* Resize the status view and let the view driver take
3819 * care of resizing the displayed views. */
3820 wresize(status_win, 1, width);
3821 mvwin(status_win, height - 1, 0);
3822 wrefresh(status_win);