1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #define VERSION "tig-0.4.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
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 . 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 next:1; /* For ref lists: are there more refs? */
127 static struct ref **get_refs(char *id);
136 set_from_int_map(struct int_map *map, size_t map_size,
137 int *value, const char *name, int namelen)
142 for (i = 0; i < map_size; i++)
143 if (namelen == map[i].namelen &&
144 !strncasecmp(name, map[i].name, namelen)) {
145 *value = map[i].value;
158 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
160 if (srclen > dstlen - 1)
163 strncpy(dst, src, srclen);
167 /* Shorthands for safely copying into a fixed buffer. */
169 #define string_copy(dst, src) \
170 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
172 #define string_ncopy(dst, src, srclen) \
173 string_ncopy_do(dst, sizeof(dst), src, srclen)
176 chomp_string(char *name)
180 while (isspace(*name))
183 namelen = strlen(name) - 1;
184 while (namelen > 0 && isspace(name[namelen]))
191 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
194 size_t pos = bufpos ? *bufpos : 0;
197 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
203 return pos >= bufsize ? FALSE : TRUE;
206 #define string_format(buf, fmt, args...) \
207 string_nformat(buf, sizeof(buf), NULL, fmt, args)
209 #define string_format_from(buf, from, fmt, args...) \
210 string_nformat(buf, sizeof(buf), from, fmt, args)
213 string_enum_compare(const char *str1, const char *str2, int len)
217 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
219 /* Diff-Header == DIFF_HEADER */
220 for (i = 0; i < len; i++) {
221 if (toupper(str1[i]) == toupper(str2[i]))
224 if (string_enum_sep(str1[i]) &&
225 string_enum_sep(str2[i]))
228 return str1[i] - str2[i];
236 * NOTE: The following is a slightly modified copy of the git project's shell
237 * quoting routines found in the quote.c file.
239 * Help to copy the thing properly quoted for the shell safety. any single
240 * quote is replaced with '\'', any exclamation point is replaced with '\!',
241 * and the whole thing is enclosed in a
244 * original sq_quote result
245 * name ==> name ==> 'name'
246 * a b ==> a b ==> 'a b'
247 * a'b ==> a'\''b ==> 'a'\''b'
248 * a!b ==> a'\!'b ==> 'a'\!'b'
252 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
256 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
259 while ((c = *src++)) {
260 if (c == '\'' || c == '!') {
280 /* XXX: Keep the view request first and in sync with views[]. */ \
281 REQ_GROUP("View switching") \
282 REQ_(VIEW_MAIN, "Show main view"), \
283 REQ_(VIEW_DIFF, "Show diff view"), \
284 REQ_(VIEW_LOG, "Show log view"), \
285 REQ_(VIEW_TREE, "Show tree view"), \
286 REQ_(VIEW_BLOB, "Show blob view"), \
287 REQ_(VIEW_HELP, "Show help page"), \
288 REQ_(VIEW_PAGER, "Show pager view"), \
290 REQ_GROUP("View manipulation") \
291 REQ_(ENTER, "Enter current line and scroll"), \
292 REQ_(NEXT, "Move to next"), \
293 REQ_(PREVIOUS, "Move to previous"), \
294 REQ_(VIEW_NEXT, "Move focus to next view"), \
295 REQ_(VIEW_CLOSE, "Close the current view"), \
296 REQ_(QUIT, "Close all views and quit"), \
298 REQ_GROUP("Cursor navigation") \
299 REQ_(MOVE_UP, "Move cursor one line up"), \
300 REQ_(MOVE_DOWN, "Move cursor one line down"), \
301 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
302 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
303 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
304 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
306 REQ_GROUP("Scrolling") \
307 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
308 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
309 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
310 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
312 REQ_GROUP("Searching") \
313 REQ_(SEARCH, "Search the view"), \
314 REQ_(SEARCH_BACK, "Search backwards in the view"), \
315 REQ_(FIND_NEXT, "Find next search match"), \
316 REQ_(FIND_PREV, "Find previous search match"), \
319 REQ_(NONE, "Do nothing"), \
320 REQ_(PROMPT, "Bring up the prompt"), \
321 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
322 REQ_(SCREEN_RESIZE, "Resize the screen"), \
323 REQ_(SHOW_VERSION, "Show version information"), \
324 REQ_(STOP_LOADING, "Stop all loading views"), \
325 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
326 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
329 /* User action requests. */
331 #define REQ_GROUP(help)
332 #define REQ_(req, help) REQ_##req
334 /* Offset all requests to avoid conflicts with ncurses getch values. */
335 REQ_OFFSET = KEY_MAX + 1,
343 struct request_info {
344 enum request request;
350 static struct request_info req_info[] = {
351 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
352 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
359 get_request(const char *name)
361 int namelen = strlen(name);
364 for (i = 0; i < ARRAY_SIZE(req_info); i++)
365 if (req_info[i].namelen == namelen &&
366 !string_enum_compare(req_info[i].name, name, namelen))
367 return req_info[i].request;
377 static const char usage[] =
378 VERSION " (" __DATE__ ")\n"
380 "Usage: tig [options]\n"
381 " or: tig [options] [--] [git log options]\n"
382 " or: tig [options] log [git log options]\n"
383 " or: tig [options] diff [git diff options]\n"
384 " or: tig [options] show [git show options]\n"
385 " or: tig [options] < [git command output]\n"
388 " -l Start up in log view\n"
389 " -d Start up in diff view\n"
390 " -n[I], --line-number[=I] Show line numbers with given interval\n"
391 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
392 " -- Mark end of tig options\n"
393 " -v, --version Show version and exit\n"
394 " -h, --help Show help message and exit\n";
396 /* Option and state variables. */
397 static bool opt_line_number = FALSE;
398 static bool opt_rev_graph = TRUE;
399 static int opt_num_interval = NUMBER_INTERVAL;
400 static int opt_tab_size = TABSIZE;
401 static enum request opt_request = REQ_VIEW_MAIN;
402 static char opt_cmd[SIZEOF_STR] = "";
403 static char opt_path[SIZEOF_STR] = "";
404 static FILE *opt_pipe = NULL;
405 static char opt_encoding[20] = "UTF-8";
406 static bool opt_utf8 = TRUE;
407 static char opt_codeset[20] = "UTF-8";
408 static iconv_t opt_iconv = ICONV_NONE;
409 static char opt_search[SIZEOF_STR] = "";
417 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
427 int namelen = strlen(name);
431 if (strncmp(opt, name, namelen))
434 if (opt[namelen] == '=')
435 value = opt + namelen + 1;
438 if (!short_name || opt[1] != short_name)
443 va_start(args, type);
444 if (type == OPT_INT) {
445 number = va_arg(args, int *);
447 *number = atoi(value);
454 /* Returns the index of log or diff command or -1 to exit. */
456 parse_options(int argc, char *argv[])
460 for (i = 1; i < argc; i++) {
463 if (!strcmp(opt, "-l")) {
464 opt_request = REQ_VIEW_LOG;
468 if (!strcmp(opt, "-d")) {
469 opt_request = REQ_VIEW_DIFF;
473 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
474 opt_line_number = TRUE;
478 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
479 opt_tab_size = MIN(opt_tab_size, TABSIZE);
483 if (check_option(opt, 'v', "version", OPT_NONE)) {
484 printf("tig version %s\n", VERSION);
488 if (check_option(opt, 'h', "help", OPT_NONE)) {
493 if (!strcmp(opt, "--")) {
498 if (!strcmp(opt, "log") ||
499 !strcmp(opt, "diff") ||
500 !strcmp(opt, "show")) {
501 opt_request = opt[0] == 'l'
502 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
506 if (opt[0] && opt[0] != '-')
509 die("unknown option '%s'\n\n%s", opt, usage);
512 if (!isatty(STDIN_FILENO)) {
513 opt_request = REQ_VIEW_PAGER;
516 } else if (i < argc) {
519 if (opt_request == REQ_VIEW_MAIN)
520 /* XXX: This is vulnerable to the user overriding
521 * options required for the main view parser. */
522 string_copy(opt_cmd, "git log --stat --pretty=raw");
524 string_copy(opt_cmd, "git");
525 buf_size = strlen(opt_cmd);
527 while (buf_size < sizeof(opt_cmd) && i < argc) {
528 opt_cmd[buf_size++] = ' ';
529 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
532 if (buf_size >= sizeof(opt_cmd))
533 die("command too long");
535 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_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
590 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
591 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
594 #define LINE(type, line, fg, bg, attr) \
601 const char *name; /* Option name. */
602 int namelen; /* Size of option name. */
603 const char *line; /* The start of line to match. */
604 int linelen; /* Size of string to match. */
605 int fg, bg, attr; /* Color and text attributes for the lines. */
608 static struct line_info line_info[] = {
609 #define LINE(type, line, fg, bg, attr) \
610 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
615 static enum line_type
616 get_line_type(char *line)
618 int linelen = strlen(line);
621 for (type = 0; type < ARRAY_SIZE(line_info); type++)
622 /* Case insensitive search matches Signed-off-by lines better. */
623 if (linelen >= line_info[type].linelen &&
624 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
631 get_line_attr(enum line_type type)
633 assert(type < ARRAY_SIZE(line_info));
634 return COLOR_PAIR(type) | line_info[type].attr;
637 static struct line_info *
638 get_line_info(char *name, int namelen)
642 for (type = 0; type < ARRAY_SIZE(line_info); type++)
643 if (namelen == line_info[type].namelen &&
644 !string_enum_compare(line_info[type].name, name, namelen))
645 return &line_info[type];
653 int default_bg = COLOR_BLACK;
654 int default_fg = COLOR_WHITE;
659 if (use_default_colors() != ERR) {
664 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
665 struct line_info *info = &line_info[type];
666 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
667 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
669 init_pair(type, fg, bg);
677 unsigned int selected:1;
679 void *data; /* User data */
689 enum request request;
690 struct keybinding *next;
693 static struct keybinding default_keybindings[] = {
695 { 'm', REQ_VIEW_MAIN },
696 { 'd', REQ_VIEW_DIFF },
697 { 'l', REQ_VIEW_LOG },
698 { 't', REQ_VIEW_TREE },
699 { 'f', REQ_VIEW_BLOB },
700 { 'p', REQ_VIEW_PAGER },
701 { 'h', REQ_VIEW_HELP },
703 /* View manipulation */
704 { 'q', REQ_VIEW_CLOSE },
705 { KEY_TAB, REQ_VIEW_NEXT },
706 { KEY_RETURN, REQ_ENTER },
707 { KEY_UP, REQ_PREVIOUS },
708 { KEY_DOWN, REQ_NEXT },
710 /* Cursor navigation */
711 { 'k', REQ_MOVE_UP },
712 { 'j', REQ_MOVE_DOWN },
713 { KEY_HOME, REQ_MOVE_FIRST_LINE },
714 { KEY_END, REQ_MOVE_LAST_LINE },
715 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
716 { ' ', REQ_MOVE_PAGE_DOWN },
717 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
718 { 'b', REQ_MOVE_PAGE_UP },
719 { '-', REQ_MOVE_PAGE_UP },
722 { KEY_IC, REQ_SCROLL_LINE_UP },
723 { KEY_DC, REQ_SCROLL_LINE_DOWN },
724 { 'w', REQ_SCROLL_PAGE_UP },
725 { 's', REQ_SCROLL_PAGE_DOWN },
729 { '?', REQ_SEARCH_BACK },
730 { 'n', REQ_FIND_NEXT },
731 { 'N', REQ_FIND_PREV },
735 { 'z', REQ_STOP_LOADING },
736 { 'v', REQ_SHOW_VERSION },
737 { 'r', REQ_SCREEN_REDRAW },
738 { '.', REQ_TOGGLE_LINENO },
739 { 'g', REQ_TOGGLE_REV_GRAPH },
742 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
745 /* Using the ncurses SIGWINCH handler. */
746 { KEY_RESIZE, REQ_SCREEN_RESIZE },
749 #define KEYMAP_INFO \
760 #define KEYMAP_(name) KEYMAP_##name
765 static struct int_map keymap_table[] = {
766 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
771 #define set_keymap(map, name) \
772 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
774 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
777 add_keybinding(enum keymap keymap, enum request request, int key)
779 struct keybinding *keybinding;
781 keybinding = calloc(1, sizeof(*keybinding));
783 die("Failed to allocate keybinding");
785 keybinding->alias = key;
786 keybinding->request = request;
787 keybinding->next = keybindings[keymap];
788 keybindings[keymap] = keybinding;
791 /* Looks for a key binding first in the given map, then in the generic map, and
792 * lastly in the default keybindings. */
794 get_keybinding(enum keymap keymap, int key)
796 struct keybinding *kbd;
799 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
800 if (kbd->alias == key)
803 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
804 if (kbd->alias == key)
807 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
808 if (default_keybindings[i].alias == key)
809 return default_keybindings[i].request;
811 return (enum request) key;
820 static struct key key_table[] = {
821 { "Enter", KEY_RETURN },
823 { "Backspace", KEY_BACKSPACE },
825 { "Escape", KEY_ESC },
826 { "Left", KEY_LEFT },
827 { "Right", KEY_RIGHT },
829 { "Down", KEY_DOWN },
830 { "Insert", KEY_IC },
831 { "Delete", KEY_DC },
833 { "Home", KEY_HOME },
835 { "PageUp", KEY_PPAGE },
836 { "PageDown", KEY_NPAGE },
846 { "F10", KEY_F(10) },
847 { "F11", KEY_F(11) },
848 { "F12", KEY_F(12) },
852 get_key_value(const char *name)
856 for (i = 0; i < ARRAY_SIZE(key_table); i++)
857 if (!strcasecmp(key_table[i].name, name))
858 return key_table[i].value;
860 if (strlen(name) == 1 && isprint(*name))
867 get_key(enum request request)
869 static char buf[BUFSIZ];
870 static char key_char[] = "'X'";
877 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
878 struct keybinding *keybinding = &default_keybindings[i];
882 if (keybinding->request != request)
885 for (key = 0; key < ARRAY_SIZE(key_table); key++)
886 if (key_table[key].value == keybinding->alias)
887 seq = key_table[key].name;
890 keybinding->alias < 127 &&
891 isprint(keybinding->alias)) {
892 key_char[1] = (char) keybinding->alias;
899 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
900 return "Too many keybindings!";
909 * User config file handling.
912 static struct int_map color_map[] = {
913 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
925 #define set_color(color, name) \
926 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
928 static struct int_map attr_map[] = {
929 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
939 #define set_attribute(attr, name) \
940 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
942 static int config_lineno;
943 static bool config_errors;
944 static char *config_msg;
946 /* Wants: object fgcolor bgcolor [attr] */
948 option_color_command(int argc, char *argv[])
950 struct line_info *info;
952 if (argc != 3 && argc != 4) {
953 config_msg = "Wrong number of arguments given to color command";
957 info = get_line_info(argv[0], strlen(argv[0]));
959 config_msg = "Unknown color name";
963 if (set_color(&info->fg, argv[1]) == ERR ||
964 set_color(&info->bg, argv[2]) == ERR) {
965 config_msg = "Unknown color";
969 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
970 config_msg = "Unknown attribute";
977 /* Wants: name = value */
979 option_set_command(int argc, char *argv[])
982 config_msg = "Wrong number of arguments given to set command";
986 if (strcmp(argv[1], "=")) {
987 config_msg = "No value assigned";
991 if (!strcmp(argv[0], "show-rev-graph")) {
992 opt_rev_graph = (!strcmp(argv[2], "1") ||
993 !strcmp(argv[2], "true") ||
994 !strcmp(argv[2], "yes"));
998 if (!strcmp(argv[0], "line-number-interval")) {
999 opt_num_interval = atoi(argv[2]);
1003 if (!strcmp(argv[0], "tab-size")) {
1004 opt_tab_size = atoi(argv[2]);
1008 if (!strcmp(argv[0], "commit-encoding")) {
1009 char *arg = argv[2];
1010 int delimiter = *arg;
1013 switch (delimiter) {
1016 for (arg++, i = 0; arg[i]; i++)
1017 if (arg[i] == delimiter) {
1022 string_copy(opt_encoding, arg);
1027 config_msg = "Unknown variable name";
1031 /* Wants: mode request key */
1033 option_bind_command(int argc, char *argv[])
1035 enum request request;
1040 config_msg = "Wrong number of arguments given to bind command";
1044 if (set_keymap(&keymap, argv[0]) == ERR) {
1045 config_msg = "Unknown key map";
1049 key = get_key_value(argv[1]);
1051 config_msg = "Unknown key";
1055 request = get_request(argv[2]);
1056 if (request == REQ_UNKNOWN) {
1057 config_msg = "Unknown request name";
1061 add_keybinding(keymap, request, key);
1067 set_option(char *opt, char *value)
1074 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1075 argv[argc++] = value;
1082 while (isspace(*value))
1086 if (!strcmp(opt, "color"))
1087 return option_color_command(argc, argv);
1089 if (!strcmp(opt, "set"))
1090 return option_set_command(argc, argv);
1092 if (!strcmp(opt, "bind"))
1093 return option_bind_command(argc, argv);
1095 config_msg = "Unknown option command";
1100 read_option(char *opt, int optlen, char *value, int valuelen)
1105 config_msg = "Internal error";
1107 /* Check for comment markers, since read_properties() will
1108 * only ensure opt and value are split at first " \t". */
1109 optlen = strcspn(opt, "#");
1113 if (opt[optlen] != 0) {
1114 config_msg = "No option value";
1118 /* Look for comment endings in the value. */
1119 int len = strcspn(value, "#");
1121 if (len < valuelen) {
1123 value[valuelen] = 0;
1126 status = set_option(opt, value);
1129 if (status == ERR) {
1130 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1131 config_lineno, optlen, opt, config_msg);
1132 config_errors = TRUE;
1135 /* Always keep going if errors are encountered. */
1142 char *home = getenv("HOME");
1143 char buf[SIZEOF_STR];
1147 config_errors = FALSE;
1149 if (!home || !string_format(buf, "%s/.tigrc", home))
1152 /* It's ok that the file doesn't exist. */
1153 file = fopen(buf, "r");
1157 if (read_properties(file, " \t", read_option) == ERR ||
1158 config_errors == TRUE)
1159 fprintf(stderr, "Errors while loading %s.\n", buf);
1172 /* The display array of active views and the index of the current view. */
1173 static struct view *display[2];
1174 static unsigned int current_view;
1176 #define foreach_displayed_view(view, i) \
1177 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1179 #define displayed_views() (display[1] != NULL ? 2 : 1)
1181 /* Current head and commit ID */
1182 static char ref_blob[SIZEOF_REF] = "";
1183 static char ref_commit[SIZEOF_REF] = "HEAD";
1184 static char ref_head[SIZEOF_REF] = "HEAD";
1187 const char *name; /* View name */
1188 const char *cmd_fmt; /* Default command line format */
1189 const char *cmd_env; /* Command line set via environment */
1190 const char *id; /* Points to either of ref_{head,commit,blob} */
1192 struct view_ops *ops; /* View operations */
1194 enum keymap keymap; /* What keymap does this view have */
1196 char cmd[SIZEOF_STR]; /* Command buffer */
1197 char ref[SIZEOF_REF]; /* Hovered commit reference */
1198 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1200 int height, width; /* The width and height of the main window */
1201 WINDOW *win; /* The main window */
1202 WINDOW *title; /* The title window living below the main window */
1205 unsigned long offset; /* Offset of the window top */
1206 unsigned long lineno; /* Current line number */
1209 char grep[SIZEOF_STR]; /* Search string */
1210 regex_t *regex; /* Pre-compiled regex */
1212 /* If non-NULL, points to the view that opened this view. If this view
1213 * is closed tig will switch back to the parent view. */
1214 struct view *parent;
1217 unsigned long lines; /* Total number of lines */
1218 struct line *line; /* Line index */
1219 unsigned long line_size;/* Total number of allocated lines */
1220 unsigned int digits; /* Number of digits in the lines member. */
1228 /* What type of content being displayed. Used in the title bar. */
1230 /* Draw one line; @lineno must be < view->height. */
1231 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1232 /* Read one line; updates view->line. */
1233 bool (*read)(struct view *view, char *data);
1234 /* Depending on view, change display based on current line. */
1235 bool (*enter)(struct view *view, struct line *line);
1236 /* Search for regex in a line. */
1237 bool (*grep)(struct view *view, struct line *line);
1239 void (*select)(struct view *view, struct line *line);
1242 static struct view_ops pager_ops;
1243 static struct view_ops main_ops;
1244 static struct view_ops tree_ops;
1245 static struct view_ops blob_ops;
1247 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1248 { name, cmd, #env, ref, ops, map}
1250 #define VIEW_(id, name, ops, ref) \
1251 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1254 static struct view views[] = {
1255 VIEW_(MAIN, "main", &main_ops, ref_head),
1256 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1257 VIEW_(LOG, "log", &pager_ops, ref_head),
1258 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1259 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1260 VIEW_(HELP, "help", &pager_ops, "static"),
1261 VIEW_(PAGER, "pager", &pager_ops, "static"),
1264 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1266 #define foreach_view(view, i) \
1267 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1269 #define view_is_displayed(view) \
1270 (view == display[0] || view == display[1])
1273 draw_view_line(struct view *view, unsigned int lineno)
1276 bool selected = (view->offset + lineno == view->lineno);
1279 assert(view_is_displayed(view));
1281 if (view->offset + lineno >= view->lines)
1284 line = &view->line[view->offset + lineno];
1287 line->selected = TRUE;
1288 view->ops->select(view, line);
1289 } else if (line->selected) {
1290 line->selected = FALSE;
1291 wmove(view->win, lineno, 0);
1292 wclrtoeol(view->win);
1295 scrollok(view->win, FALSE);
1296 draw_ok = view->ops->draw(view, line, lineno, selected);
1297 scrollok(view->win, TRUE);
1303 redraw_view_from(struct view *view, int lineno)
1305 assert(0 <= lineno && lineno < view->height);
1307 for (; lineno < view->height; lineno++) {
1308 if (!draw_view_line(view, lineno))
1312 redrawwin(view->win);
1313 wrefresh(view->win);
1317 redraw_view(struct view *view)
1320 redraw_view_from(view, 0);
1325 update_view_title(struct view *view)
1327 char buf[SIZEOF_STR];
1328 char state[SIZEOF_STR];
1329 size_t bufpos = 0, statelen = 0;
1331 assert(view_is_displayed(view));
1333 if (view->lines || view->pipe) {
1334 unsigned int view_lines = view->offset + view->height;
1335 unsigned int lines = view->lines
1336 ? MIN(view_lines, view->lines) * 100 / view->lines
1339 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1346 time_t secs = time(NULL) - view->start_time;
1348 /* Three git seconds are a long time ... */
1350 string_format_from(state, &statelen, " %lds", secs);
1354 string_format_from(buf, &bufpos, "[%s]", view->name);
1355 if (*view->ref && bufpos < view->width) {
1356 size_t refsize = strlen(view->ref);
1357 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1359 if (minsize < view->width)
1360 refsize = view->width - minsize + 7;
1361 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1364 if (statelen && bufpos < view->width) {
1365 string_format_from(buf, &bufpos, " %s", state);
1368 if (view == display[current_view])
1369 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1371 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1373 werase(view->title);
1374 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1375 wmove(view->title, 0, view->width - 1);
1376 wrefresh(view->title);
1380 resize_display(void)
1383 struct view *base = display[0];
1384 struct view *view = display[1] ? display[1] : display[0];
1386 /* Setup window dimensions */
1388 getmaxyx(stdscr, base->height, base->width);
1390 /* Make room for the status window. */
1394 /* Horizontal split. */
1395 view->width = base->width;
1396 view->height = SCALE_SPLIT_VIEW(base->height);
1397 base->height -= view->height;
1399 /* Make room for the title bar. */
1403 /* Make room for the title bar. */
1408 foreach_displayed_view (view, i) {
1410 view->win = newwin(view->height, 0, offset, 0);
1412 die("Failed to create %s view", view->name);
1414 scrollok(view->win, TRUE);
1416 view->title = newwin(1, 0, offset + view->height, 0);
1418 die("Failed to create title window");
1421 wresize(view->win, view->height, view->width);
1422 mvwin(view->win, offset, 0);
1423 mvwin(view->title, offset + view->height, 0);
1426 offset += view->height + 1;
1431 redraw_display(void)
1436 foreach_displayed_view (view, i) {
1438 update_view_title(view);
1443 update_display_cursor(struct view *view)
1445 /* Move the cursor to the right-most column of the cursor line.
1447 * XXX: This could turn out to be a bit expensive, but it ensures that
1448 * the cursor does not jump around. */
1450 wmove(view->win, view->lineno - view->offset, view->width - 1);
1451 wrefresh(view->win);
1459 /* Scrolling backend */
1461 do_scroll_view(struct view *view, int lines)
1463 bool redraw_current_line = FALSE;
1465 /* The rendering expects the new offset. */
1466 view->offset += lines;
1468 assert(0 <= view->offset && view->offset < view->lines);
1471 /* Move current line into the view. */
1472 if (view->lineno < view->offset) {
1473 view->lineno = view->offset;
1474 redraw_current_line = TRUE;
1475 } else if (view->lineno >= view->offset + view->height) {
1476 view->lineno = view->offset + view->height - 1;
1477 redraw_current_line = TRUE;
1480 assert(view->offset <= view->lineno && view->lineno < view->lines);
1482 /* Redraw the whole screen if scrolling is pointless. */
1483 if (view->height < ABS(lines)) {
1487 int line = lines > 0 ? view->height - lines : 0;
1488 int end = line + ABS(lines);
1490 wscrl(view->win, lines);
1492 for (; line < end; line++) {
1493 if (!draw_view_line(view, line))
1497 if (redraw_current_line)
1498 draw_view_line(view, view->lineno - view->offset);
1501 redrawwin(view->win);
1502 wrefresh(view->win);
1506 /* Scroll frontend */
1508 scroll_view(struct view *view, enum request request)
1512 assert(view_is_displayed(view));
1515 case REQ_SCROLL_PAGE_DOWN:
1516 lines = view->height;
1517 case REQ_SCROLL_LINE_DOWN:
1518 if (view->offset + lines > view->lines)
1519 lines = view->lines - view->offset;
1521 if (lines == 0 || view->offset + view->height >= view->lines) {
1522 report("Cannot scroll beyond the last line");
1527 case REQ_SCROLL_PAGE_UP:
1528 lines = view->height;
1529 case REQ_SCROLL_LINE_UP:
1530 if (lines > view->offset)
1531 lines = view->offset;
1534 report("Cannot scroll beyond the first line");
1542 die("request %d not handled in switch", request);
1545 do_scroll_view(view, lines);
1550 move_view(struct view *view, enum request request)
1552 int scroll_steps = 0;
1556 case REQ_MOVE_FIRST_LINE:
1557 steps = -view->lineno;
1560 case REQ_MOVE_LAST_LINE:
1561 steps = view->lines - view->lineno - 1;
1564 case REQ_MOVE_PAGE_UP:
1565 steps = view->height > view->lineno
1566 ? -view->lineno : -view->height;
1569 case REQ_MOVE_PAGE_DOWN:
1570 steps = view->lineno + view->height >= view->lines
1571 ? view->lines - view->lineno - 1 : view->height;
1583 die("request %d not handled in switch", request);
1586 if (steps <= 0 && view->lineno == 0) {
1587 report("Cannot move beyond the first line");
1590 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1591 report("Cannot move beyond the last line");
1595 /* Move the current line */
1596 view->lineno += steps;
1597 assert(0 <= view->lineno && view->lineno < view->lines);
1599 /* Check whether the view needs to be scrolled */
1600 if (view->lineno < view->offset ||
1601 view->lineno >= view->offset + view->height) {
1602 scroll_steps = steps;
1603 if (steps < 0 && -steps > view->offset) {
1604 scroll_steps = -view->offset;
1606 } else if (steps > 0) {
1607 if (view->lineno == view->lines - 1 &&
1608 view->lines > view->height) {
1609 scroll_steps = view->lines - view->offset - 1;
1610 if (scroll_steps >= view->height)
1611 scroll_steps -= view->height - 1;
1616 if (!view_is_displayed(view)) {
1617 view->offset += steps;
1618 view->ops->select(view, &view->line[view->lineno]);
1622 /* Repaint the old "current" line if we be scrolling */
1623 if (ABS(steps) < view->height)
1624 draw_view_line(view, view->lineno - steps - view->offset);
1627 do_scroll_view(view, scroll_steps);
1631 /* Draw the current line */
1632 draw_view_line(view, view->lineno - view->offset);
1634 redrawwin(view->win);
1635 wrefresh(view->win);
1644 static void search_view(struct view *view, enum request request);
1647 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1649 assert(view_is_displayed(view));
1651 if (!view->ops->grep(view, line))
1654 if (lineno - view->offset >= view->height) {
1655 view->offset = lineno;
1656 view->lineno = lineno;
1660 unsigned long old_lineno = view->lineno - view->offset;
1662 view->lineno = lineno;
1663 draw_view_line(view, old_lineno);
1665 draw_view_line(view, view->lineno - view->offset);
1666 redrawwin(view->win);
1667 wrefresh(view->win);
1670 report("Line %ld matches '%s'", lineno + 1, view->grep);
1675 find_next(struct view *view, enum request request)
1677 unsigned long lineno = view->lineno;
1682 report("No previous search");
1684 search_view(view, request);
1694 case REQ_SEARCH_BACK:
1703 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1704 lineno += direction;
1706 /* Note, lineno is unsigned long so will wrap around in which case it
1707 * will become bigger than view->lines. */
1708 for (; lineno < view->lines; lineno += direction) {
1709 struct line *line = &view->line[lineno];
1711 if (find_next_line(view, lineno, line))
1715 report("No match found for '%s'", view->grep);
1719 search_view(struct view *view, enum request request)
1724 regfree(view->regex);
1727 view->regex = calloc(1, sizeof(*view->regex));
1732 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1733 if (regex_err != 0) {
1734 char buf[SIZEOF_STR] = "unknown error";
1736 regerror(regex_err, view->regex, buf, sizeof(buf));
1737 report("Search failed: %s", buf);
1741 string_copy(view->grep, opt_search);
1743 find_next(view, request);
1747 * Incremental updating
1751 end_update(struct view *view)
1755 set_nonblocking_input(FALSE);
1756 if (view->pipe == stdin)
1764 begin_update(struct view *view)
1766 const char *id = view->id;
1772 string_copy(view->cmd, opt_cmd);
1774 /* When running random commands, the view ref could have become
1775 * invalid so clear it. */
1778 } else if (view == VIEW(REQ_VIEW_TREE)) {
1779 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1781 if (strcmp(view->vid, view->id))
1784 if (!string_format(view->cmd, format, id, opt_path))
1788 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1790 if (!string_format(view->cmd, format, id, id, id, id, id))
1794 /* Special case for the pager view. */
1796 view->pipe = opt_pipe;
1799 view->pipe = popen(view->cmd, "r");
1805 set_nonblocking_input(TRUE);
1810 string_copy(view->vid, id);
1815 for (i = 0; i < view->lines; i++)
1816 if (view->line[i].data)
1817 free(view->line[i].data);
1823 view->start_time = time(NULL);
1828 static struct line *
1829 realloc_lines(struct view *view, size_t line_size)
1831 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1837 view->line_size = line_size;
1842 update_view(struct view *view)
1844 char in_buffer[BUFSIZ];
1845 char out_buffer[BUFSIZ * 2];
1847 /* The number of lines to read. If too low it will cause too much
1848 * redrawing (and possible flickering), if too high responsiveness
1850 unsigned long lines = view->height;
1851 int redraw_from = -1;
1856 /* Only redraw if lines are visible. */
1857 if (view->offset + view->height >= view->lines)
1858 redraw_from = view->lines - view->offset;
1860 /* FIXME: This is probably not perfect for backgrounded views. */
1861 if (!realloc_lines(view, view->lines + lines))
1864 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1865 size_t linelen = strlen(line);
1868 line[linelen - 1] = 0;
1870 if (opt_iconv != ICONV_NONE) {
1872 size_t inlen = linelen;
1874 char *outbuf = out_buffer;
1875 size_t outlen = sizeof(out_buffer);
1879 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1880 if (ret != (size_t) -1) {
1882 linelen = strlen(out_buffer);
1886 if (!view->ops->read(view, line))
1896 lines = view->lines;
1897 for (digits = 0; lines; digits++)
1900 /* Keep the displayed view in sync with line number scaling. */
1901 if (digits != view->digits) {
1902 view->digits = digits;
1907 if (!view_is_displayed(view))
1910 if (view == VIEW(REQ_VIEW_TREE)) {
1911 /* Clear the view and redraw everything since the tree sorting
1912 * might have rearranged things. */
1915 } else if (redraw_from >= 0) {
1916 /* If this is an incremental update, redraw the previous line
1917 * since for commits some members could have changed when
1918 * loading the main view. */
1919 if (redraw_from > 0)
1922 /* Incrementally draw avoids flickering. */
1923 redraw_view_from(view, redraw_from);
1926 /* Update the title _after_ the redraw so that if the redraw picks up a
1927 * commit reference in view->ref it'll be available here. */
1928 update_view_title(view);
1931 if (ferror(view->pipe)) {
1932 report("Failed to read: %s", strerror(errno));
1935 } else if (feof(view->pipe)) {
1943 report("Allocation failure");
1946 view->ops->read(view, NULL);
1956 static void open_help_view(struct view *view)
1959 int lines = ARRAY_SIZE(req_info) + 2;
1962 if (view->lines > 0)
1965 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1966 if (!req_info[i].request)
1969 view->line = calloc(lines, sizeof(*view->line));
1971 report("Allocation failure");
1975 view->ops->read(view, "Quick reference for tig keybindings:");
1977 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1980 if (!req_info[i].request) {
1981 view->ops->read(view, "");
1982 view->ops->read(view, req_info[i].help);
1986 key = get_key(req_info[i].request);
1987 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1990 view->ops->read(view, buf);
1995 OPEN_DEFAULT = 0, /* Use default view switching. */
1996 OPEN_SPLIT = 1, /* Split current view. */
1997 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1998 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2002 open_view(struct view *prev, enum request request, enum open_flags flags)
2004 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2005 bool split = !!(flags & OPEN_SPLIT);
2006 bool reload = !!(flags & OPEN_RELOAD);
2007 struct view *view = VIEW(request);
2008 int nviews = displayed_views();
2009 struct view *base_view = display[0];
2011 if (view == prev && nviews == 1 && !reload) {
2012 report("Already in %s view", view->name);
2016 if (view == VIEW(REQ_VIEW_HELP)) {
2017 open_help_view(view);
2019 } else if ((reload || strcmp(view->vid, view->id)) &&
2020 !begin_update(view)) {
2021 report("Failed to load %s view", view->name);
2030 /* Maximize the current view. */
2031 memset(display, 0, sizeof(display));
2033 display[current_view] = view;
2036 /* Resize the view when switching between split- and full-screen,
2037 * or when switching between two different full-screen views. */
2038 if (nviews != displayed_views() ||
2039 (nviews == 1 && base_view != display[0]))
2042 if (split && prev->lineno - prev->offset >= prev->height) {
2043 /* Take the title line into account. */
2044 int lines = prev->lineno - prev->offset - prev->height + 1;
2046 /* Scroll the view that was split if the current line is
2047 * outside the new limited view. */
2048 do_scroll_view(prev, lines);
2051 if (prev && view != prev) {
2052 if (split && !backgrounded) {
2053 /* "Blur" the previous view. */
2054 update_view_title(prev);
2057 view->parent = prev;
2060 if (view->pipe && view->lines == 0) {
2061 /* Clear the old view and let the incremental updating refill
2070 /* If the view is backgrounded the above calls to report()
2071 * won't redraw the view title. */
2073 update_view_title(view);
2078 * User request switch noodle
2082 view_driver(struct view *view, enum request request)
2089 case REQ_MOVE_PAGE_UP:
2090 case REQ_MOVE_PAGE_DOWN:
2091 case REQ_MOVE_FIRST_LINE:
2092 case REQ_MOVE_LAST_LINE:
2093 move_view(view, request);
2096 case REQ_SCROLL_LINE_DOWN:
2097 case REQ_SCROLL_LINE_UP:
2098 case REQ_SCROLL_PAGE_DOWN:
2099 case REQ_SCROLL_PAGE_UP:
2100 scroll_view(view, request);
2105 report("No file chosen, press 't' to open tree view");
2114 case REQ_VIEW_PAGER:
2115 open_view(view, request, OPEN_DEFAULT);
2120 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2122 if ((view == VIEW(REQ_VIEW_DIFF) &&
2123 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2124 (view == VIEW(REQ_VIEW_BLOB) &&
2125 view->parent == VIEW(REQ_VIEW_TREE))) {
2126 view = view->parent;
2127 move_view(view, request);
2128 if (view_is_displayed(view))
2129 update_view_title(view);
2131 move_view(view, request);
2138 report("Nothing to enter");
2141 return view->ops->enter(view, &view->line[view->lineno]);
2145 int nviews = displayed_views();
2146 int next_view = (current_view + 1) % nviews;
2148 if (next_view == current_view) {
2149 report("Only one view is displayed");
2153 current_view = next_view;
2154 /* Blur out the title of the previous view. */
2155 update_view_title(view);
2159 case REQ_TOGGLE_LINENO:
2160 opt_line_number = !opt_line_number;
2164 case REQ_TOGGLE_REV_GRAPH:
2165 opt_rev_graph = !opt_rev_graph;
2170 /* Always reload^Wrerun commands from the prompt. */
2171 open_view(view, opt_request, OPEN_RELOAD);
2175 case REQ_SEARCH_BACK:
2176 search_view(view, request);
2181 find_next(view, request);
2184 case REQ_STOP_LOADING:
2185 for (i = 0; i < ARRAY_SIZE(views); i++) {
2188 report("Stopped loading the %s view", view->name),
2193 case REQ_SHOW_VERSION:
2194 report("%s (built %s)", VERSION, __DATE__);
2197 case REQ_SCREEN_RESIZE:
2200 case REQ_SCREEN_REDRAW:
2208 case REQ_VIEW_CLOSE:
2209 /* XXX: Mark closed views by letting view->parent point to the
2210 * view itself. Parents to closed view should never be
2213 view->parent->parent != view->parent) {
2214 memset(display, 0, sizeof(display));
2216 display[current_view] = view->parent;
2217 view->parent = view;
2227 /* An unknown key will show most commonly used commands. */
2228 report("Unknown key, press 'h' for help");
2241 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2243 char *text = line->data;
2244 enum line_type type = line->type;
2245 int textlen = strlen(text);
2248 wmove(view->win, lineno, 0);
2252 wchgat(view->win, -1, 0, type, NULL);
2255 attr = get_line_attr(type);
2256 wattrset(view->win, attr);
2258 if (opt_line_number || opt_tab_size < TABSIZE) {
2259 static char spaces[] = " ";
2260 int col_offset = 0, col = 0;
2262 if (opt_line_number) {
2263 unsigned long real_lineno = view->offset + lineno + 1;
2265 if (real_lineno == 1 ||
2266 (real_lineno % opt_num_interval) == 0) {
2267 wprintw(view->win, "%.*d", view->digits, real_lineno);
2270 waddnstr(view->win, spaces,
2271 MIN(view->digits, STRING_SIZE(spaces)));
2273 waddstr(view->win, ": ");
2274 col_offset = view->digits + 2;
2277 while (text && col_offset + col < view->width) {
2278 int cols_max = view->width - col_offset - col;
2282 if (*text == '\t') {
2284 assert(sizeof(spaces) > TABSIZE);
2286 cols = opt_tab_size - (col % opt_tab_size);
2289 text = strchr(text, '\t');
2290 cols = line ? text - pos : strlen(pos);
2293 waddnstr(view->win, pos, MIN(cols, cols_max));
2298 int col = 0, pos = 0;
2300 for (; pos < textlen && col < view->width; pos++, col++)
2301 if (text[pos] == '\t')
2302 col += TABSIZE - (col % TABSIZE) - 1;
2304 waddnstr(view->win, text, pos);
2311 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2313 char refbuf[SIZEOF_STR];
2317 if (!string_format(refbuf, "git describe %s", commit_id))
2320 pipe = popen(refbuf, "r");
2324 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2325 ref = chomp_string(ref);
2331 /* This is the only fatal call, since it can "corrupt" the buffer. */
2332 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2339 add_pager_refs(struct view *view, struct line *line)
2341 char buf[SIZEOF_STR];
2342 char *commit_id = line->data + STRING_SIZE("commit ");
2344 size_t bufpos = 0, refpos = 0;
2345 const char *sep = "Refs: ";
2346 bool is_tag = FALSE;
2348 assert(line->type == LINE_COMMIT);
2350 refs = get_refs(commit_id);
2352 if (view == VIEW(REQ_VIEW_DIFF))
2353 goto try_add_describe_ref;
2358 struct ref *ref = refs[refpos];
2359 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2361 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2366 } while (refs[refpos++]->next);
2368 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2369 try_add_describe_ref:
2370 /* Add <tag>-g<commit_id> "fake" reference. */
2371 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2378 if (!realloc_lines(view, view->line_size + 1))
2381 line = &view->line[view->lines];
2382 line->data = strdup(buf);
2386 line->type = LINE_PP_REFS;
2391 pager_read(struct view *view, char *data)
2393 struct line *line = &view->line[view->lines];
2398 line->data = strdup(data);
2402 line->type = get_line_type(line->data);
2405 if (line->type == LINE_COMMIT &&
2406 (view == VIEW(REQ_VIEW_DIFF) ||
2407 view == VIEW(REQ_VIEW_LOG)))
2408 add_pager_refs(view, line);
2414 pager_enter(struct view *view, struct line *line)
2418 if (line->type == LINE_COMMIT &&
2419 (view == VIEW(REQ_VIEW_LOG) ||
2420 view == VIEW(REQ_VIEW_PAGER))) {
2421 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2425 /* Always scroll the view even if it was split. That way
2426 * you can use Enter to scroll through the log view and
2427 * split open each commit diff. */
2428 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2430 /* FIXME: A minor workaround. Scrolling the view will call report("")
2431 * but if we are scrolling a non-current view this won't properly
2432 * update the view title. */
2434 update_view_title(view);
2440 pager_grep(struct view *view, struct line *line)
2443 char *text = line->data;
2448 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2455 pager_select(struct view *view, struct line *line)
2457 if (line->type == LINE_COMMIT) {
2458 char *text = line->data;
2460 string_copy(view->ref, text + STRING_SIZE("commit "));
2461 string_copy(ref_commit, view->ref);
2465 static struct view_ops pager_ops = {
2479 /* Parse output from git-ls-tree(1):
2481 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2482 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2483 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2484 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2487 #define SIZEOF_TREE_ATTR \
2488 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2490 #define TREE_UP_FORMAT "040000 tree %s\t.."
2493 tree_compare_entry(enum line_type type1, char *name1,
2494 enum line_type type2, char *name2)
2496 if (type1 != type2) {
2497 if (type1 == LINE_TREE_DIR)
2502 return strcmp(name1, name2);
2506 tree_read(struct view *view, char *text)
2508 size_t textlen = text ? strlen(text) : 0;
2509 char buf[SIZEOF_STR];
2511 enum line_type type;
2512 bool first_read = view->lines == 0;
2514 if (textlen <= SIZEOF_TREE_ATTR)
2517 type = text[STRING_SIZE("100644 ")] == 't'
2518 ? LINE_TREE_DIR : LINE_TREE_FILE;
2521 /* Add path info line */
2522 if (string_format(buf, "Directory path /%s", opt_path) &&
2523 realloc_lines(view, view->line_size + 1) &&
2524 pager_read(view, buf))
2525 view->line[view->lines - 1].type = LINE_DEFAULT;
2529 /* Insert "link" to parent directory. */
2531 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2532 realloc_lines(view, view->line_size + 1) &&
2533 pager_read(view, buf))
2534 view->line[view->lines - 1].type = LINE_TREE_DIR;
2539 /* Strip the path part ... */
2541 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2542 size_t striplen = strlen(opt_path);
2543 char *path = text + SIZEOF_TREE_ATTR;
2545 if (pathlen > striplen)
2546 memmove(path, path + striplen,
2547 pathlen - striplen + 1);
2550 /* Skip "Directory ..." and ".." line. */
2551 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2552 struct line *line = &view->line[pos];
2553 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2554 char *path2 = text + SIZEOF_TREE_ATTR;
2555 int cmp = tree_compare_entry(line->type, path1, type, path2);
2560 text = strdup(text);
2564 if (view->lines > pos)
2565 memmove(&view->line[pos + 1], &view->line[pos],
2566 (view->lines - pos) * sizeof(*line));
2568 line = &view->line[pos];
2575 if (!pager_read(view, text))
2578 /* Move the current line to the first tree entry. */
2582 view->line[view->lines - 1].type = type;
2587 tree_enter(struct view *view, struct line *line)
2589 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2590 enum request request;
2592 switch (line->type) {
2594 /* Depending on whether it is a subdir or parent (updir?) link
2595 * mangle the path buffer. */
2596 if (line == &view->line[1] && *opt_path) {
2597 size_t path_len = strlen(opt_path);
2598 char *dirsep = opt_path + path_len - 1;
2600 while (dirsep > opt_path && dirsep[-1] != '/')
2606 size_t pathlen = strlen(opt_path);
2607 size_t origlen = pathlen;
2608 char *data = line->data;
2609 char *basename = data + SIZEOF_TREE_ATTR;
2611 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2612 opt_path[origlen] = 0;
2617 /* Trees and subtrees share the same ID, so they are not not
2618 * unique like blobs. */
2619 flags |= OPEN_RELOAD;
2620 request = REQ_VIEW_TREE;
2623 case LINE_TREE_FILE:
2624 request = REQ_VIEW_BLOB;
2631 open_view(view, request, flags);
2637 tree_select(struct view *view, struct line *line)
2639 char *text = line->data;
2641 text += STRING_SIZE("100644 blob ");
2643 if (line->type == LINE_TREE_FILE) {
2644 string_ncopy(ref_blob, text, 40);
2645 /* Also update the blob view's ref, since all there must always
2647 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2649 } else if (line->type != LINE_TREE_DIR) {
2653 string_ncopy(view->ref, text, 40);
2656 static struct view_ops tree_ops = {
2666 blob_read(struct view *view, char *line)
2668 bool state = pager_read(view, line);
2671 view->line[view->lines - 1].type = LINE_DEFAULT;
2676 static struct view_ops blob_ops = {
2691 char id[SIZEOF_REV]; /* SHA1 ID. */
2692 char title[75]; /* First line of the commit message. */
2693 char author[75]; /* Author of the commit. */
2694 struct tm time; /* Date from the author ident. */
2695 struct ref **refs; /* Repository references. */
2696 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2697 size_t graph_size; /* The width of the graph array. */
2700 /* Size of rev graph with no "padding" columns */
2701 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2704 struct rev_graph *prev, *next, *parents;
2705 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2707 struct commit *commit;
2711 /* Parents of the commit being visualized. */
2712 static struct rev_graph graph_parents[4];
2714 /* The current stack of revisions on the graph. */
2715 static struct rev_graph graph_stacks[4] = {
2716 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
2717 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2718 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
2719 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
2723 graph_parent_is_merge(struct rev_graph *graph)
2725 return graph->parents->size > 1;
2729 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
2731 struct commit *commit = graph->commit;
2733 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
2734 commit->graph[commit->graph_size++] = symbol;
2738 done_rev_graph(struct rev_graph *graph)
2740 if (graph_parent_is_merge(graph) &&
2741 graph->pos < graph->size - 1 &&
2742 graph->next->size == graph->size + graph->parents->size - 1) {
2743 size_t i = graph->pos + graph->parents->size - 1;
2745 graph->commit->graph_size = i * 2;
2746 while (i < graph->next->size - 1) {
2747 append_to_rev_graph(graph, ' ');
2748 append_to_rev_graph(graph, '\\');
2753 graph->size = graph->pos = 0;
2754 graph->commit = NULL;
2755 memset(graph->parents, 0, sizeof(*graph->parents));
2759 push_rev_graph(struct rev_graph *graph, char *parent)
2761 /* Combine duplicate parents lines. */
2762 if (graph->size > 0 &&
2763 !strncmp(graph->rev[graph->size - 1], parent, SIZEOF_REV))
2766 if (graph->size < SIZEOF_REVITEMS) {
2767 string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV);
2772 get_rev_graph_symbol(struct rev_graph *graph)
2776 if (graph->parents->size == 0)
2777 symbol = REVGRAPH_INIT;
2778 else if (graph_parent_is_merge(graph))
2779 symbol = REVGRAPH_MERGE;
2780 else if (graph->pos >= graph->size)
2781 symbol = REVGRAPH_BRANCH;
2783 symbol = REVGRAPH_COMMIT;
2789 draw_rev_graph(struct rev_graph *graph)
2792 chtype separator, line;
2794 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
2795 static struct rev_filler fillers[] = {
2796 { ' ', REVGRAPH_LINE },
2801 chtype symbol = get_rev_graph_symbol(graph);
2802 struct rev_filler *filler;
2805 filler = &fillers[DEFAULT];
2807 for (i = 0; i < graph->pos; i++) {
2808 append_to_rev_graph(graph, filler->line);
2809 if (graph_parent_is_merge(graph->prev) &&
2810 graph->prev->pos == i)
2811 filler = &fillers[RSHARP];
2813 append_to_rev_graph(graph, filler->separator);
2816 /* Place the symbol for this revision. */
2817 append_to_rev_graph(graph, symbol);
2819 if (graph->prev->size > graph->size)
2820 filler = &fillers[RDIAG];
2822 filler = &fillers[DEFAULT];
2826 for (; i < graph->size; i++) {
2827 append_to_rev_graph(graph, filler->separator);
2828 append_to_rev_graph(graph, filler->line);
2829 if (graph_parent_is_merge(graph->prev) &&
2830 i < graph->prev->pos + graph->parents->size)
2831 filler = &fillers[RSHARP];
2832 if (graph->prev->size > graph->size)
2833 filler = &fillers[LDIAG];
2836 if (graph->prev->size > graph->size) {
2837 append_to_rev_graph(graph, filler->separator);
2838 if (filler->line != ' ')
2839 append_to_rev_graph(graph, filler->line);
2843 /* Prepare the next rev graph */
2845 prepare_rev_graph(struct rev_graph *graph)
2849 /* First, traverse all lines of revisions up to the active one. */
2850 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2851 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2854 push_rev_graph(graph->next, graph->rev[graph->pos]);
2857 /* Interleave the new revision parent(s). */
2858 for (i = 0; i < graph->parents->size; i++)
2859 push_rev_graph(graph->next, graph->parents->rev[i]);
2861 /* Lastly, put any remaining revisions. */
2862 for (i = graph->pos + 1; i < graph->size; i++)
2863 push_rev_graph(graph->next, graph->rev[i]);
2867 update_rev_graph(struct rev_graph *graph)
2869 /* If this is the finalizing update ... */
2871 prepare_rev_graph(graph);
2873 /* Graph visualization needs a one rev look-ahead,
2874 * so the first update doesn't visualize anything. */
2875 if (!graph->prev->commit)
2878 draw_rev_graph(graph->prev);
2879 done_rev_graph(graph->prev->prev);
2888 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2890 char buf[DATE_COLS + 1];
2891 struct commit *commit = line->data;
2892 enum line_type type;
2898 if (!*commit->author)
2901 wmove(view->win, lineno, col);
2905 wattrset(view->win, get_line_attr(type));
2906 wchgat(view->win, -1, 0, type, NULL);
2909 type = LINE_MAIN_COMMIT;
2910 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2913 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2914 waddnstr(view->win, buf, timelen);
2915 waddstr(view->win, " ");
2918 wmove(view->win, lineno, col);
2919 if (type != LINE_CURSOR)
2920 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2923 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2925 authorlen = strlen(commit->author);
2926 if (authorlen > AUTHOR_COLS - 2) {
2927 authorlen = AUTHOR_COLS - 2;
2933 waddnstr(view->win, commit->author, authorlen);
2934 if (type != LINE_CURSOR)
2935 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2936 waddch(view->win, '~');
2938 waddstr(view->win, commit->author);
2942 if (type != LINE_CURSOR)
2943 wattrset(view->win, A_NORMAL);
2945 if (opt_rev_graph && commit->graph_size) {
2948 wmove(view->win, lineno, col);
2949 /* Using waddch() instead of waddnstr() ensures that
2950 * they'll be rendered correctly for the cursor line. */
2951 for (i = 0; i < commit->graph_size; i++)
2952 waddch(view->win, commit->graph[i]);
2954 waddch(view->win, ' ');
2955 col += commit->graph_size + 1;
2958 wmove(view->win, lineno, col);
2964 if (type == LINE_CURSOR)
2966 else if (commit->refs[i]->tag)
2967 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2969 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2970 waddstr(view->win, "[");
2971 waddstr(view->win, commit->refs[i]->name);
2972 waddstr(view->win, "]");
2973 if (type != LINE_CURSOR)
2974 wattrset(view->win, A_NORMAL);
2975 waddstr(view->win, " ");
2976 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2977 } while (commit->refs[i++]->next);
2980 if (type != LINE_CURSOR)
2981 wattrset(view->win, get_line_attr(type));
2984 int titlelen = strlen(commit->title);
2986 if (col + titlelen > view->width)
2987 titlelen = view->width - col;
2989 waddnstr(view->win, commit->title, titlelen);
2995 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2997 main_read(struct view *view, char *line)
2999 static struct rev_graph *graph = graph_stacks;
3000 enum line_type type;
3001 struct commit *commit = view->lines
3002 ? view->line[view->lines - 1].data : NULL;
3005 update_rev_graph(graph);
3009 type = get_line_type(line);
3013 commit = calloc(1, sizeof(struct commit));
3017 line += STRING_SIZE("commit ");
3019 view->line[view->lines++].data = commit;
3020 string_copy(commit->id, line);
3021 commit->refs = get_refs(commit->id);
3022 graph->commit = commit;
3027 line += STRING_SIZE("parent ");
3028 push_rev_graph(graph->parents, line);
3034 char *ident = line + STRING_SIZE("author ");
3035 char *end = strchr(ident, '<');
3040 update_rev_graph(graph);
3041 graph = graph->next;
3044 char *email = end + 1;
3046 for (; end > ident && isspace(end[-1]); end--) ;
3048 if (end == ident && *email) {
3050 end = strchr(ident, '>');
3051 for (; end > ident && isspace(end[-1]); end--) ;
3056 /* End is NULL or ident meaning there's no author. */
3060 string_copy(commit->author, ident);
3062 /* Parse epoch and timezone */
3064 char *secs = strchr(end + 1, '>');
3068 if (!secs || secs[1] != ' ')
3072 time = (time_t) atol(secs);
3073 zone = strchr(secs, ' ');
3074 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3078 tz = ('0' - zone[1]) * 60 * 60 * 10;
3079 tz += ('0' - zone[2]) * 60 * 60;
3080 tz += ('0' - zone[3]) * 60;
3081 tz += ('0' - zone[4]) * 60;
3088 gmtime_r(&time, &commit->time);
3096 /* Fill in the commit title if it has not already been set. */
3097 if (commit->title[0])
3100 /* Require titles to start with a non-space character at the
3101 * offset used by git log. */
3102 /* FIXME: More gracefull handling of titles; append "..." to
3103 * shortened titles, etc. */
3104 if (strncmp(line, " ", 4) ||
3108 string_copy(commit->title, line + 4);
3115 main_enter(struct view *view, struct line *line)
3117 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3119 open_view(view, REQ_VIEW_DIFF, flags);
3124 main_grep(struct view *view, struct line *line)
3126 struct commit *commit = line->data;
3127 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3128 char buf[DATE_COLS + 1];
3131 for (state = S_TITLE; state < S_END; state++) {
3135 case S_TITLE: text = commit->title; break;
3136 case S_AUTHOR: text = commit->author; break;
3138 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3147 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3155 main_select(struct view *view, struct line *line)
3157 struct commit *commit = line->data;
3159 string_copy(view->ref, commit->id);
3160 string_copy(ref_commit, view->ref);
3163 static struct view_ops main_ops = {
3174 * Unicode / UTF-8 handling
3176 * NOTE: Much of the following code for dealing with unicode is derived from
3177 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3178 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3181 /* I've (over)annotated a lot of code snippets because I am not entirely
3182 * confident that the approach taken by this small UTF-8 interface is correct.
3186 unicode_width(unsigned long c)
3189 (c <= 0x115f /* Hangul Jamo */
3192 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3194 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3195 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3196 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3197 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3198 || (c >= 0xffe0 && c <= 0xffe6)
3199 || (c >= 0x20000 && c <= 0x2fffd)
3200 || (c >= 0x30000 && c <= 0x3fffd)))
3206 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3207 * Illegal bytes are set one. */
3208 static const unsigned char utf8_bytes[256] = {
3209 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,
3210 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,
3211 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,
3212 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,
3213 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,
3214 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,
3215 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,
3216 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,
3219 /* Decode UTF-8 multi-byte representation into a unicode character. */
3220 static inline unsigned long
3221 utf8_to_unicode(const char *string, size_t length)
3223 unsigned long unicode;
3227 unicode = string[0];
3230 unicode = (string[0] & 0x1f) << 6;
3231 unicode += (string[1] & 0x3f);
3234 unicode = (string[0] & 0x0f) << 12;
3235 unicode += ((string[1] & 0x3f) << 6);
3236 unicode += (string[2] & 0x3f);
3239 unicode = (string[0] & 0x0f) << 18;
3240 unicode += ((string[1] & 0x3f) << 12);
3241 unicode += ((string[2] & 0x3f) << 6);
3242 unicode += (string[3] & 0x3f);
3245 unicode = (string[0] & 0x0f) << 24;
3246 unicode += ((string[1] & 0x3f) << 18);
3247 unicode += ((string[2] & 0x3f) << 12);
3248 unicode += ((string[3] & 0x3f) << 6);
3249 unicode += (string[4] & 0x3f);
3252 unicode = (string[0] & 0x01) << 30;
3253 unicode += ((string[1] & 0x3f) << 24);
3254 unicode += ((string[2] & 0x3f) << 18);
3255 unicode += ((string[3] & 0x3f) << 12);
3256 unicode += ((string[4] & 0x3f) << 6);
3257 unicode += (string[5] & 0x3f);
3260 die("Invalid unicode length");
3263 /* Invalid characters could return the special 0xfffd value but NUL
3264 * should be just as good. */
3265 return unicode > 0xffff ? 0 : unicode;
3268 /* Calculates how much of string can be shown within the given maximum width
3269 * and sets trimmed parameter to non-zero value if all of string could not be
3272 * Additionally, adds to coloffset how many many columns to move to align with
3273 * the expected position. Takes into account how multi-byte and double-width
3274 * characters will effect the cursor position.
3276 * Returns the number of bytes to output from string to satisfy max_width. */
3278 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3280 const char *start = string;
3281 const char *end = strchr(string, '\0');
3287 while (string < end) {
3288 int c = *(unsigned char *) string;
3289 unsigned char bytes = utf8_bytes[c];
3291 unsigned long unicode;
3293 if (string + bytes > end)
3296 /* Change representation to figure out whether
3297 * it is a single- or double-width character. */
3299 unicode = utf8_to_unicode(string, bytes);
3300 /* FIXME: Graceful handling of invalid unicode character. */
3304 ucwidth = unicode_width(unicode);
3306 if (width > max_width) {
3311 /* The column offset collects the differences between the
3312 * number of bytes encoding a character and the number of
3313 * columns will be used for rendering said character.
3315 * So if some character A is encoded in 2 bytes, but will be
3316 * represented on the screen using only 1 byte this will and up
3317 * adding 1 to the multi-byte column offset.
3319 * Assumes that no double-width character can be encoding in
3320 * less than two bytes. */
3321 if (bytes > ucwidth)
3322 mbwidth += bytes - ucwidth;
3327 *coloffset += mbwidth;
3329 return string - start;
3337 /* Whether or not the curses interface has been initialized. */
3338 static bool cursed = FALSE;
3340 /* The status window is used for polling keystrokes. */
3341 static WINDOW *status_win;
3343 /* Update status and title window. */
3345 report(const char *msg, ...)
3347 static bool empty = TRUE;
3348 struct view *view = display[current_view];
3350 if (!empty || *msg) {
3353 va_start(args, msg);
3356 wmove(status_win, 0, 0);
3358 vwprintw(status_win, msg, args);
3363 wrefresh(status_win);
3368 update_view_title(view);
3369 update_display_cursor(view);
3372 /* Controls when nodelay should be in effect when polling user input. */
3374 set_nonblocking_input(bool loading)
3376 static unsigned int loading_views;
3378 if ((loading == FALSE && loading_views-- == 1) ||
3379 (loading == TRUE && loading_views++ == 0))
3380 nodelay(status_win, loading);
3388 /* Initialize the curses library */
3389 if (isatty(STDIN_FILENO)) {
3390 cursed = !!initscr();
3392 /* Leave stdin and stdout alone when acting as a pager. */
3393 FILE *io = fopen("/dev/tty", "r+");
3396 die("Failed to open /dev/tty");
3397 cursed = !!newterm(NULL, io, io);
3401 die("Failed to initialize curses");
3403 nonl(); /* Tell curses not to do NL->CR/NL on output */
3404 cbreak(); /* Take input chars one at a time, no wait for \n */
3405 noecho(); /* Don't echo input */
3406 leaveok(stdscr, TRUE);
3411 getmaxyx(stdscr, y, x);
3412 status_win = newwin(1, 0, y - 1, 0);
3414 die("Failed to create status window");
3416 /* Enable keyboard mapping */
3417 keypad(status_win, TRUE);
3418 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3422 read_prompt(const char *prompt)
3424 enum { READING, STOP, CANCEL } status = READING;
3425 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3428 while (status == READING) {
3432 foreach_view (view, i)
3435 report("%s%.*s", prompt, pos, buf);
3436 /* Refresh, accept single keystroke of input */
3437 key = wgetch(status_win);
3442 status = pos ? STOP : CANCEL;
3460 if (pos >= sizeof(buf)) {
3461 report("Input string too long");
3466 buf[pos++] = (char) key;
3470 if (status == CANCEL) {
3471 /* Clear the status window */
3482 * Repository references
3485 static struct ref *refs;
3486 static size_t refs_size;
3488 /* Id <-> ref store */
3489 static struct ref ***id_refs;
3490 static size_t id_refs_size;
3492 static struct ref **
3495 struct ref ***tmp_id_refs;
3496 struct ref **ref_list = NULL;
3497 size_t ref_list_size = 0;
3500 for (i = 0; i < id_refs_size; i++)
3501 if (!strcmp(id, id_refs[i][0]->id))
3504 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3508 id_refs = tmp_id_refs;
3510 for (i = 0; i < refs_size; i++) {
3513 if (strcmp(id, refs[i].id))
3516 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3524 if (ref_list_size > 0)
3525 ref_list[ref_list_size - 1]->next = 1;
3526 ref_list[ref_list_size] = &refs[i];
3528 /* XXX: The properties of the commit chains ensures that we can
3529 * safely modify the shared ref. The repo references will
3530 * always be similar for the same id. */
3531 ref_list[ref_list_size]->next = 0;
3536 id_refs[id_refs_size++] = ref_list;
3542 read_ref(char *id, int idlen, char *name, int namelen)
3547 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3548 /* Commits referenced by tags has "^{}" appended. */
3549 if (name[namelen - 1] != '}')
3552 while (namelen > 0 && name[namelen] != '^')
3556 namelen -= STRING_SIZE("refs/tags/");
3557 name += STRING_SIZE("refs/tags/");
3559 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3560 namelen -= STRING_SIZE("refs/heads/");
3561 name += STRING_SIZE("refs/heads/");
3563 } else if (!strcmp(name, "HEAD")) {
3567 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3571 ref = &refs[refs_size++];
3572 ref->name = malloc(namelen + 1);
3576 strncpy(ref->name, name, namelen);
3577 ref->name[namelen] = 0;
3579 string_copy(ref->id, id);
3587 const char *cmd_env = getenv("TIG_LS_REMOTE");
3588 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3590 return read_properties(popen(cmd, "r"), "\t", read_ref);
3594 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3596 if (!strcmp(name, "i18n.commitencoding"))
3597 string_copy(opt_encoding, value);
3603 load_repo_config(void)
3605 return read_properties(popen("git repo-config --list", "r"),
3606 "=", read_repo_config_option);
3610 read_properties(FILE *pipe, const char *separators,
3611 int (*read_property)(char *, int, char *, int))
3613 char buffer[BUFSIZ];
3620 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3625 name = chomp_string(name);
3626 namelen = strcspn(name, separators);
3628 if (name[namelen]) {
3630 value = chomp_string(name + namelen + 1);
3631 valuelen = strlen(value);
3638 state = read_property(name, namelen, value, valuelen);
3641 if (state != ERR && ferror(pipe))
3654 static void __NORETURN
3657 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3663 static void __NORETURN
3664 die(const char *err, ...)
3670 va_start(args, err);
3671 fputs("tig: ", stderr);
3672 vfprintf(stderr, err, args);
3673 fputs("\n", stderr);
3680 main(int argc, char *argv[])
3683 enum request request;
3686 signal(SIGINT, quit);
3688 if (setlocale(LC_ALL, "")) {
3689 string_copy(opt_codeset, nl_langinfo(CODESET));
3692 if (load_options() == ERR)
3693 die("Failed to load user config.");
3695 /* Load the repo config file so options can be overwritten from
3696 * the command line. */
3697 if (load_repo_config() == ERR)
3698 die("Failed to load repo config.");
3700 if (!parse_options(argc, argv))
3703 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3704 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3705 if (opt_iconv == ICONV_NONE)
3706 die("Failed to initialize character set conversion");
3709 if (load_refs() == ERR)
3710 die("Failed to load refs.");
3712 /* Require a git repository unless when running in pager mode. */
3713 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3714 die("Not a git repository");
3716 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3717 view->cmd_env = getenv(view->cmd_env);
3719 request = opt_request;
3723 while (view_driver(display[current_view], request)) {
3727 foreach_view (view, i)
3730 /* Refresh, accept single keystroke of input */
3731 key = wgetch(status_win);
3733 request = get_keybinding(display[current_view]->keymap, key);
3735 /* Some low-level request handling. This keeps access to
3736 * status_win restricted. */
3740 char *cmd = read_prompt(":");
3742 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3743 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3744 opt_request = REQ_VIEW_DIFF;
3746 opt_request = REQ_VIEW_PAGER;
3755 case REQ_SEARCH_BACK:
3757 const char *prompt = request == REQ_SEARCH
3759 char *search = read_prompt(prompt);
3762 string_copy(opt_search, search);
3767 case REQ_SCREEN_RESIZE:
3771 getmaxyx(stdscr, height, width);
3773 /* Resize the status view and let the view driver take
3774 * care of resizing the displayed views. */
3775 wresize(status_win, 1, width);
3776 mvwin(status_win, height - 1, 0);
3777 wrefresh(status_win);