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);
1278 assert(view_is_displayed(view));
1280 if (view->offset + lineno >= view->lines)
1283 line = &view->line[view->offset + lineno];
1286 line->selected = TRUE;
1287 view->ops->select(view, line);
1288 } else if (line->selected) {
1289 line->selected = FALSE;
1290 wmove(view->win, lineno, 0);
1291 wclrtoeol(view->win);
1294 return view->ops->draw(view, line, lineno, selected);
1298 redraw_view_from(struct view *view, int lineno)
1300 assert(0 <= lineno && lineno < view->height);
1302 for (; lineno < view->height; lineno++) {
1303 if (!draw_view_line(view, lineno))
1307 redrawwin(view->win);
1308 wrefresh(view->win);
1312 redraw_view(struct view *view)
1315 redraw_view_from(view, 0);
1320 update_view_title(struct view *view)
1322 assert(view_is_displayed(view));
1324 if (view == display[current_view])
1325 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1327 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1329 werase(view->title);
1330 wmove(view->title, 0, 0);
1333 wprintw(view->title, "[%s] %s", view->name, view->ref);
1335 wprintw(view->title, "[%s]", view->name);
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 wprintw(view->title, " - %s %d of %d (%d%%)",
1351 time_t secs = time(NULL) - view->start_time;
1353 /* Three git seconds are a long time ... */
1355 wprintw(view->title, " %lds", secs);
1358 wmove(view->title, 0, view->width - 1);
1359 wrefresh(view->title);
1363 resize_display(void)
1366 struct view *base = display[0];
1367 struct view *view = display[1] ? display[1] : display[0];
1369 /* Setup window dimensions */
1371 getmaxyx(stdscr, base->height, base->width);
1373 /* Make room for the status window. */
1377 /* Horizontal split. */
1378 view->width = base->width;
1379 view->height = SCALE_SPLIT_VIEW(base->height);
1380 base->height -= view->height;
1382 /* Make room for the title bar. */
1386 /* Make room for the title bar. */
1391 foreach_displayed_view (view, i) {
1393 view->win = newwin(view->height, 0, offset, 0);
1395 die("Failed to create %s view", view->name);
1397 scrollok(view->win, TRUE);
1399 view->title = newwin(1, 0, offset + view->height, 0);
1401 die("Failed to create title window");
1404 wresize(view->win, view->height, view->width);
1405 mvwin(view->win, offset, 0);
1406 mvwin(view->title, offset + view->height, 0);
1409 offset += view->height + 1;
1414 redraw_display(void)
1419 foreach_displayed_view (view, i) {
1421 update_view_title(view);
1426 update_display_cursor(void)
1428 struct view *view = display[current_view];
1430 /* Move the cursor to the right-most column of the cursor line.
1432 * XXX: This could turn out to be a bit expensive, but it ensures that
1433 * the cursor does not jump around. */
1435 wmove(view->win, view->lineno - view->offset, view->width - 1);
1436 wrefresh(view->win);
1444 /* Scrolling backend */
1446 do_scroll_view(struct view *view, int lines)
1448 bool redraw_current_line = FALSE;
1450 /* The rendering expects the new offset. */
1451 view->offset += lines;
1453 assert(0 <= view->offset && view->offset < view->lines);
1456 /* Move current line into the view. */
1457 if (view->lineno < view->offset) {
1458 view->lineno = view->offset;
1459 redraw_current_line = TRUE;
1460 } else if (view->lineno >= view->offset + view->height) {
1461 view->lineno = view->offset + view->height - 1;
1462 redraw_current_line = TRUE;
1465 assert(view->offset <= view->lineno && view->lineno < view->lines);
1467 /* Redraw the whole screen if scrolling is pointless. */
1468 if (view->height < ABS(lines)) {
1472 int line = lines > 0 ? view->height - lines : 0;
1473 int end = line + ABS(lines);
1475 wscrl(view->win, lines);
1477 for (; line < end; line++) {
1478 if (!draw_view_line(view, line))
1482 if (redraw_current_line)
1483 draw_view_line(view, view->lineno - view->offset);
1486 redrawwin(view->win);
1487 wrefresh(view->win);
1491 /* Scroll frontend */
1493 scroll_view(struct view *view, enum request request)
1497 assert(view_is_displayed(view));
1500 case REQ_SCROLL_PAGE_DOWN:
1501 lines = view->height;
1502 case REQ_SCROLL_LINE_DOWN:
1503 if (view->offset + lines > view->lines)
1504 lines = view->lines - view->offset;
1506 if (lines == 0 || view->offset + view->height >= view->lines) {
1507 report("Cannot scroll beyond the last line");
1512 case REQ_SCROLL_PAGE_UP:
1513 lines = view->height;
1514 case REQ_SCROLL_LINE_UP:
1515 if (lines > view->offset)
1516 lines = view->offset;
1519 report("Cannot scroll beyond the first line");
1527 die("request %d not handled in switch", request);
1530 do_scroll_view(view, lines);
1535 move_view(struct view *view, enum request request)
1537 int scroll_steps = 0;
1541 case REQ_MOVE_FIRST_LINE:
1542 steps = -view->lineno;
1545 case REQ_MOVE_LAST_LINE:
1546 steps = view->lines - view->lineno - 1;
1549 case REQ_MOVE_PAGE_UP:
1550 steps = view->height > view->lineno
1551 ? -view->lineno : -view->height;
1554 case REQ_MOVE_PAGE_DOWN:
1555 steps = view->lineno + view->height >= view->lines
1556 ? view->lines - view->lineno - 1 : view->height;
1568 die("request %d not handled in switch", request);
1571 if (steps <= 0 && view->lineno == 0) {
1572 report("Cannot move beyond the first line");
1575 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1576 report("Cannot move beyond the last line");
1580 /* Move the current line */
1581 view->lineno += steps;
1582 assert(0 <= view->lineno && view->lineno < view->lines);
1584 /* Check whether the view needs to be scrolled */
1585 if (view->lineno < view->offset ||
1586 view->lineno >= view->offset + view->height) {
1587 scroll_steps = steps;
1588 if (steps < 0 && -steps > view->offset) {
1589 scroll_steps = -view->offset;
1591 } else if (steps > 0) {
1592 if (view->lineno == view->lines - 1 &&
1593 view->lines > view->height) {
1594 scroll_steps = view->lines - view->offset - 1;
1595 if (scroll_steps >= view->height)
1596 scroll_steps -= view->height - 1;
1601 if (!view_is_displayed(view)) {
1602 view->offset += steps;
1603 view->ops->select(view, &view->line[view->lineno]);
1607 /* Repaint the old "current" line if we be scrolling */
1608 if (ABS(steps) < view->height)
1609 draw_view_line(view, view->lineno - steps - view->offset);
1612 do_scroll_view(view, scroll_steps);
1616 /* Draw the current line */
1617 draw_view_line(view, view->lineno - view->offset);
1619 redrawwin(view->win);
1620 wrefresh(view->win);
1629 static void search_view(struct view *view, enum request request);
1632 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1634 assert(view_is_displayed(view));
1636 if (!view->ops->grep(view, line))
1639 if (lineno - view->offset >= view->height) {
1640 view->offset = lineno;
1641 view->lineno = lineno;
1645 unsigned long old_lineno = view->lineno - view->offset;
1647 view->lineno = lineno;
1648 draw_view_line(view, old_lineno);
1650 draw_view_line(view, view->lineno - view->offset);
1651 redrawwin(view->win);
1652 wrefresh(view->win);
1655 report("Line %ld matches '%s'", lineno + 1, view->grep);
1660 find_next(struct view *view, enum request request)
1662 unsigned long lineno = view->lineno;
1667 report("No previous search");
1669 search_view(view, request);
1679 case REQ_SEARCH_BACK:
1688 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1689 lineno += direction;
1691 /* Note, lineno is unsigned long so will wrap around in which case it
1692 * will become bigger than view->lines. */
1693 for (; lineno < view->lines; lineno += direction) {
1694 struct line *line = &view->line[lineno];
1696 if (find_next_line(view, lineno, line))
1700 report("No match found for '%s'", view->grep);
1704 search_view(struct view *view, enum request request)
1709 regfree(view->regex);
1712 view->regex = calloc(1, sizeof(*view->regex));
1717 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1718 if (regex_err != 0) {
1719 char buf[SIZEOF_STR] = "unknown error";
1721 regerror(regex_err, view->regex, buf, sizeof(buf));
1722 report("Search failed: %s", buf);
1726 string_copy(view->grep, opt_search);
1728 find_next(view, request);
1732 * Incremental updating
1736 end_update(struct view *view)
1740 set_nonblocking_input(FALSE);
1741 if (view->pipe == stdin)
1749 begin_update(struct view *view)
1751 const char *id = view->id;
1757 string_copy(view->cmd, opt_cmd);
1759 /* When running random commands, the view ref could have become
1760 * invalid so clear it. */
1763 } else if (view == VIEW(REQ_VIEW_TREE)) {
1764 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1766 if (strcmp(view->vid, view->id))
1769 if (!string_format(view->cmd, format, id, opt_path))
1773 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1775 if (!string_format(view->cmd, format, id, id, id, id, id))
1779 /* Special case for the pager view. */
1781 view->pipe = opt_pipe;
1784 view->pipe = popen(view->cmd, "r");
1790 set_nonblocking_input(TRUE);
1795 string_copy(view->vid, id);
1800 for (i = 0; i < view->lines; i++)
1801 if (view->line[i].data)
1802 free(view->line[i].data);
1808 view->start_time = time(NULL);
1813 static struct line *
1814 realloc_lines(struct view *view, size_t line_size)
1816 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1822 view->line_size = line_size;
1827 update_view(struct view *view)
1829 char in_buffer[BUFSIZ];
1830 char out_buffer[BUFSIZ * 2];
1832 /* The number of lines to read. If too low it will cause too much
1833 * redrawing (and possible flickering), if too high responsiveness
1835 unsigned long lines = view->height;
1836 int redraw_from = -1;
1841 /* Only redraw if lines are visible. */
1842 if (view->offset + view->height >= view->lines)
1843 redraw_from = view->lines - view->offset;
1845 /* FIXME: This is probably not perfect for backgrounded views. */
1846 if (!realloc_lines(view, view->lines + lines))
1849 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1850 size_t linelen = strlen(line);
1853 line[linelen - 1] = 0;
1855 if (opt_iconv != ICONV_NONE) {
1857 size_t inlen = linelen;
1859 char *outbuf = out_buffer;
1860 size_t outlen = sizeof(out_buffer);
1864 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1865 if (ret != (size_t) -1) {
1867 linelen = strlen(out_buffer);
1871 if (!view->ops->read(view, line))
1881 lines = view->lines;
1882 for (digits = 0; lines; digits++)
1885 /* Keep the displayed view in sync with line number scaling. */
1886 if (digits != view->digits) {
1887 view->digits = digits;
1892 if (!view_is_displayed(view))
1895 if (view == VIEW(REQ_VIEW_TREE)) {
1896 /* Clear the view and redraw everything since the tree sorting
1897 * might have rearranged things. */
1900 } else if (redraw_from >= 0) {
1901 /* If this is an incremental update, redraw the previous line
1902 * since for commits some members could have changed when
1903 * loading the main view. */
1904 if (redraw_from > 0)
1907 /* Incrementally draw avoids flickering. */
1908 redraw_view_from(view, redraw_from);
1911 /* Update the title _after_ the redraw so that if the redraw picks up a
1912 * commit reference in view->ref it'll be available here. */
1913 update_view_title(view);
1916 if (ferror(view->pipe)) {
1917 report("Failed to read: %s", strerror(errno));
1920 } else if (feof(view->pipe)) {
1928 report("Allocation failure");
1940 static void open_help_view(struct view *view)
1943 int lines = ARRAY_SIZE(req_info) + 2;
1946 if (view->lines > 0)
1949 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1950 if (!req_info[i].request)
1953 view->line = calloc(lines, sizeof(*view->line));
1955 report("Allocation failure");
1959 view->ops->read(view, "Quick reference for tig keybindings:");
1961 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1964 if (!req_info[i].request) {
1965 view->ops->read(view, "");
1966 view->ops->read(view, req_info[i].help);
1970 key = get_key(req_info[i].request);
1971 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1974 view->ops->read(view, buf);
1979 OPEN_DEFAULT = 0, /* Use default view switching. */
1980 OPEN_SPLIT = 1, /* Split current view. */
1981 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1982 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1986 open_view(struct view *prev, enum request request, enum open_flags flags)
1988 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1989 bool split = !!(flags & OPEN_SPLIT);
1990 bool reload = !!(flags & OPEN_RELOAD);
1991 struct view *view = VIEW(request);
1992 int nviews = displayed_views();
1993 struct view *base_view = display[0];
1995 if (view == prev && nviews == 1 && !reload) {
1996 report("Already in %s view", view->name);
2000 if (view == VIEW(REQ_VIEW_HELP)) {
2001 open_help_view(view);
2003 } else if ((reload || strcmp(view->vid, view->id)) &&
2004 !begin_update(view)) {
2005 report("Failed to load %s view", view->name);
2014 /* Maximize the current view. */
2015 memset(display, 0, sizeof(display));
2017 display[current_view] = view;
2020 /* Resize the view when switching between split- and full-screen,
2021 * or when switching between two different full-screen views. */
2022 if (nviews != displayed_views() ||
2023 (nviews == 1 && base_view != display[0]))
2026 if (split && prev->lineno - prev->offset >= prev->height) {
2027 /* Take the title line into account. */
2028 int lines = prev->lineno - prev->offset - prev->height + 1;
2030 /* Scroll the view that was split if the current line is
2031 * outside the new limited view. */
2032 do_scroll_view(prev, lines);
2035 if (prev && view != prev) {
2036 if (split && !backgrounded) {
2037 /* "Blur" the previous view. */
2038 update_view_title(prev);
2041 view->parent = prev;
2044 if (view->pipe && view->lines == 0) {
2045 /* Clear the old view and let the incremental updating refill
2054 /* If the view is backgrounded the above calls to report()
2055 * won't redraw the view title. */
2057 update_view_title(view);
2062 * User request switch noodle
2066 view_driver(struct view *view, enum request request)
2073 case REQ_MOVE_PAGE_UP:
2074 case REQ_MOVE_PAGE_DOWN:
2075 case REQ_MOVE_FIRST_LINE:
2076 case REQ_MOVE_LAST_LINE:
2077 move_view(view, request);
2080 case REQ_SCROLL_LINE_DOWN:
2081 case REQ_SCROLL_LINE_UP:
2082 case REQ_SCROLL_PAGE_DOWN:
2083 case REQ_SCROLL_PAGE_UP:
2084 scroll_view(view, request);
2089 report("No file chosen, press 't' to open tree view");
2098 case REQ_VIEW_PAGER:
2099 open_view(view, request, OPEN_DEFAULT);
2104 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2106 if ((view == VIEW(REQ_VIEW_DIFF) &&
2107 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2108 (view == VIEW(REQ_VIEW_BLOB) &&
2109 view->parent == VIEW(REQ_VIEW_TREE))) {
2110 view = view->parent;
2111 move_view(view, request);
2112 if (view_is_displayed(view))
2113 update_view_title(view);
2115 move_view(view, request);
2122 report("Nothing to enter");
2125 return view->ops->enter(view, &view->line[view->lineno]);
2129 int nviews = displayed_views();
2130 int next_view = (current_view + 1) % nviews;
2132 if (next_view == current_view) {
2133 report("Only one view is displayed");
2137 current_view = next_view;
2138 /* Blur out the title of the previous view. */
2139 update_view_title(view);
2143 case REQ_TOGGLE_LINENO:
2144 opt_line_number = !opt_line_number;
2148 case REQ_TOGGLE_REV_GRAPH:
2149 opt_rev_graph = !opt_rev_graph;
2154 /* Always reload^Wrerun commands from the prompt. */
2155 open_view(view, opt_request, OPEN_RELOAD);
2159 case REQ_SEARCH_BACK:
2160 search_view(view, request);
2165 find_next(view, request);
2168 case REQ_STOP_LOADING:
2169 for (i = 0; i < ARRAY_SIZE(views); i++) {
2172 report("Stopped loading the %s view", view->name),
2177 case REQ_SHOW_VERSION:
2178 report("%s (built %s)", VERSION, __DATE__);
2181 case REQ_SCREEN_RESIZE:
2184 case REQ_SCREEN_REDRAW:
2192 case REQ_VIEW_CLOSE:
2193 /* XXX: Mark closed views by letting view->parent point to the
2194 * view itself. Parents to closed view should never be
2197 view->parent->parent != view->parent) {
2198 memset(display, 0, sizeof(display));
2200 display[current_view] = view->parent;
2201 view->parent = view;
2211 /* An unknown key will show most commonly used commands. */
2212 report("Unknown key, press 'h' for help");
2225 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2227 char *text = line->data;
2228 enum line_type type = line->type;
2229 int textlen = strlen(text);
2232 wmove(view->win, lineno, 0);
2236 wchgat(view->win, -1, 0, type, NULL);
2239 attr = get_line_attr(type);
2240 wattrset(view->win, attr);
2242 if (opt_line_number || opt_tab_size < TABSIZE) {
2243 static char spaces[] = " ";
2244 int col_offset = 0, col = 0;
2246 if (opt_line_number) {
2247 unsigned long real_lineno = view->offset + lineno + 1;
2249 if (real_lineno == 1 ||
2250 (real_lineno % opt_num_interval) == 0) {
2251 wprintw(view->win, "%.*d", view->digits, real_lineno);
2254 waddnstr(view->win, spaces,
2255 MIN(view->digits, STRING_SIZE(spaces)));
2257 waddstr(view->win, ": ");
2258 col_offset = view->digits + 2;
2261 while (text && col_offset + col < view->width) {
2262 int cols_max = view->width - col_offset - col;
2266 if (*text == '\t') {
2268 assert(sizeof(spaces) > TABSIZE);
2270 cols = opt_tab_size - (col % opt_tab_size);
2273 text = strchr(text, '\t');
2274 cols = line ? text - pos : strlen(pos);
2277 waddnstr(view->win, pos, MIN(cols, cols_max));
2282 int col = 0, pos = 0;
2284 for (; pos < textlen && col < view->width; pos++, col++)
2285 if (text[pos] == '\t')
2286 col += TABSIZE - (col % TABSIZE) - 1;
2288 waddnstr(view->win, text, pos);
2295 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2297 char refbuf[SIZEOF_STR];
2301 if (!string_format(refbuf, "git describe %s", commit_id))
2304 pipe = popen(refbuf, "r");
2308 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2309 ref = chomp_string(ref);
2315 /* This is the only fatal call, since it can "corrupt" the buffer. */
2316 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2323 add_pager_refs(struct view *view, struct line *line)
2325 char buf[SIZEOF_STR];
2326 char *commit_id = line->data + STRING_SIZE("commit ");
2328 size_t bufpos = 0, refpos = 0;
2329 const char *sep = "Refs: ";
2330 bool is_tag = FALSE;
2332 assert(line->type == LINE_COMMIT);
2334 refs = get_refs(commit_id);
2336 if (view == VIEW(REQ_VIEW_DIFF))
2337 goto try_add_describe_ref;
2342 struct ref *ref = refs[refpos];
2343 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2345 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2350 } while (refs[refpos++]->next);
2352 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2353 try_add_describe_ref:
2354 /* Add <tag>-g<commit_id> "fake" reference. */
2355 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2362 if (!realloc_lines(view, view->line_size + 1))
2365 line = &view->line[view->lines];
2366 line->data = strdup(buf);
2370 line->type = LINE_PP_REFS;
2375 pager_read(struct view *view, char *data)
2377 struct line *line = &view->line[view->lines];
2379 line->data = strdup(data);
2383 line->type = get_line_type(line->data);
2386 if (line->type == LINE_COMMIT &&
2387 (view == VIEW(REQ_VIEW_DIFF) ||
2388 view == VIEW(REQ_VIEW_LOG)))
2389 add_pager_refs(view, line);
2395 pager_enter(struct view *view, struct line *line)
2399 if (line->type == LINE_COMMIT &&
2400 (view == VIEW(REQ_VIEW_LOG) ||
2401 view == VIEW(REQ_VIEW_PAGER))) {
2402 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2406 /* Always scroll the view even if it was split. That way
2407 * you can use Enter to scroll through the log view and
2408 * split open each commit diff. */
2409 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2411 /* FIXME: A minor workaround. Scrolling the view will call report("")
2412 * but if we are scrolling a non-current view this won't properly
2413 * update the view title. */
2415 update_view_title(view);
2421 pager_grep(struct view *view, struct line *line)
2424 char *text = line->data;
2429 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2436 pager_select(struct view *view, struct line *line)
2438 if (line->type == LINE_COMMIT) {
2439 char *text = line->data;
2441 string_copy(view->ref, text + STRING_SIZE("commit "));
2442 string_copy(ref_commit, view->ref);
2446 static struct view_ops pager_ops = {
2460 /* Parse output from git-ls-tree(1):
2462 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2463 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2464 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2465 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2468 #define SIZEOF_TREE_ATTR \
2469 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2471 #define TREE_UP_FORMAT "040000 tree %s\t.."
2474 tree_compare_entry(enum line_type type1, char *name1,
2475 enum line_type type2, char *name2)
2477 if (type1 != type2) {
2478 if (type1 == LINE_TREE_DIR)
2483 return strcmp(name1, name2);
2487 tree_read(struct view *view, char *text)
2489 size_t textlen = strlen(text);
2490 char buf[SIZEOF_STR];
2492 enum line_type type;
2493 bool first_read = view->lines == 0;
2495 if (textlen <= SIZEOF_TREE_ATTR)
2498 type = text[STRING_SIZE("100644 ")] == 't'
2499 ? LINE_TREE_DIR : LINE_TREE_FILE;
2502 /* Add path info line */
2503 if (string_format(buf, "Directory path /%s", opt_path) &&
2504 realloc_lines(view, view->line_size + 1) &&
2505 pager_read(view, buf))
2506 view->line[view->lines - 1].type = LINE_DEFAULT;
2510 /* Insert "link" to parent directory. */
2512 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2513 realloc_lines(view, view->line_size + 1) &&
2514 pager_read(view, buf))
2515 view->line[view->lines - 1].type = LINE_TREE_DIR;
2520 /* Strip the path part ... */
2522 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2523 size_t striplen = strlen(opt_path);
2524 char *path = text + SIZEOF_TREE_ATTR;
2526 if (pathlen > striplen)
2527 memmove(path, path + striplen,
2528 pathlen - striplen + 1);
2531 /* Skip "Directory ..." and ".." line. */
2532 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2533 struct line *line = &view->line[pos];
2534 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2535 char *path2 = text + SIZEOF_TREE_ATTR;
2536 int cmp = tree_compare_entry(line->type, path1, type, path2);
2541 text = strdup(text);
2545 if (view->lines > pos)
2546 memmove(&view->line[pos + 1], &view->line[pos],
2547 (view->lines - pos) * sizeof(*line));
2549 line = &view->line[pos];
2556 if (!pager_read(view, text))
2559 /* Move the current line to the first tree entry. */
2563 view->line[view->lines - 1].type = type;
2568 tree_enter(struct view *view, struct line *line)
2570 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2571 enum request request;
2573 switch (line->type) {
2575 /* Depending on whether it is a subdir or parent (updir?) link
2576 * mangle the path buffer. */
2577 if (line == &view->line[1] && *opt_path) {
2578 size_t path_len = strlen(opt_path);
2579 char *dirsep = opt_path + path_len - 1;
2581 while (dirsep > opt_path && dirsep[-1] != '/')
2587 size_t pathlen = strlen(opt_path);
2588 size_t origlen = pathlen;
2589 char *data = line->data;
2590 char *basename = data + SIZEOF_TREE_ATTR;
2592 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2593 opt_path[origlen] = 0;
2598 /* Trees and subtrees share the same ID, so they are not not
2599 * unique like blobs. */
2600 flags |= OPEN_RELOAD;
2601 request = REQ_VIEW_TREE;
2604 case LINE_TREE_FILE:
2605 request = REQ_VIEW_BLOB;
2612 open_view(view, request, flags);
2618 tree_select(struct view *view, struct line *line)
2620 char *text = line->data;
2622 text += STRING_SIZE("100644 blob ");
2624 if (line->type == LINE_TREE_FILE) {
2625 string_ncopy(ref_blob, text, 40);
2626 /* Also update the blob view's ref, since all there must always
2628 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2630 } else if (line->type != LINE_TREE_DIR) {
2634 string_ncopy(view->ref, text, 40);
2637 static struct view_ops tree_ops = {
2647 blob_read(struct view *view, char *line)
2649 bool state = pager_read(view, line);
2652 view->line[view->lines - 1].type = LINE_DEFAULT;
2657 static struct view_ops blob_ops = {
2672 char id[SIZEOF_REV]; /* SHA1 ID. */
2673 char title[75]; /* First line of the commit message. */
2674 char author[75]; /* Author of the commit. */
2675 struct tm time; /* Date from the author ident. */
2676 struct ref **refs; /* Repository references. */
2677 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2678 size_t graph_size; /* The width of the graph array. */
2681 /* Size of rev graph with no "padding" columns */
2682 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2685 struct rev_graph *prev, *next, *parents;
2686 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2688 struct commit *commit;
2692 /* Parents of the commit being visualized. */
2693 static struct rev_graph graph_parents[3];
2695 /* The current stack of revisions on the graph. */
2696 static struct rev_graph graph_stacks[3] = {
2697 { &graph_stacks[2], &graph_stacks[1], &graph_parents[0] },
2698 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2699 { &graph_stacks[1], &graph_stacks[0], &graph_parents[2] },
2703 graph_parent_is_merge(struct rev_graph *graph)
2705 return graph->parents->size > 1;
2709 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
2711 if (graph->commit->graph_size < ARRAY_SIZE(graph->commit->graph) - 1)
2712 graph->commit->graph[graph->commit->graph_size++] = symbol;
2716 done_rev_graph(struct rev_graph *graph)
2718 if (graph_parent_is_merge(graph) &&
2719 graph->pos < graph->size - 1 &&
2720 graph->next->size == graph->size + graph->parents->size - 1) {
2721 size_t i = graph->pos + graph->parents->size - 1;
2723 graph->commit->graph_size = i * 2;
2724 while (i < graph->next->size - 1) {
2725 append_to_rev_graph(graph, ' ');
2726 append_to_rev_graph(graph, '\\');
2731 graph->size = graph->pos = 0;
2732 graph->commit = NULL;
2733 memset(graph->parents, 0, sizeof(*graph->parents));
2737 push_rev_graph(struct rev_graph *graph, char *parent)
2739 /* Combine duplicate parents lines. */
2740 if (graph->size > 0 &&
2741 !strncmp(graph->rev[graph->size - 1], parent, SIZEOF_REV))
2744 if (graph->size < SIZEOF_REVITEMS) {
2745 string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV);
2750 get_rev_graph_symbol(struct rev_graph *graph)
2754 if (graph->parents->size == 0)
2755 symbol = REVGRAPH_INIT;
2756 else if (graph_parent_is_merge(graph))
2757 symbol = REVGRAPH_MERGE;
2758 else if (graph->pos >= graph->size)
2759 symbol = REVGRAPH_BRANCH;
2761 symbol = REVGRAPH_COMMIT;
2767 draw_rev_graph(struct rev_graph *graph)
2770 chtype separator, line;
2772 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
2773 static struct rev_filler fillers[] = {
2774 { ' ', REVGRAPH_LINE },
2780 chtype symbol = get_rev_graph_symbol(graph);
2781 struct rev_filler *filler;
2784 filler = &fillers[DEFAULT];
2786 for (i = 0; i < graph->pos; i++) {
2787 append_to_rev_graph(graph, filler->line);
2788 if (graph_parent_is_merge(graph->prev) &&
2789 graph->prev->pos == i)
2790 filler = &fillers[RSHARP];
2792 append_to_rev_graph(graph, filler->separator);
2795 /* Place the symbol for this revision. */
2796 append_to_rev_graph(graph, symbol);
2798 if (graph->prev->size > graph->size)
2799 filler = &fillers[RDIAG];
2801 filler = &fillers[DEFAULT];
2805 for (; i < graph->size; i++) {
2806 append_to_rev_graph(graph, filler->separator);
2807 append_to_rev_graph(graph, filler->line);
2808 if (graph_parent_is_merge(graph->prev) &&
2809 i < graph->prev->pos + graph->parents->size)
2810 filler = &fillers[RSHARP];
2811 if (graph->prev->size > graph->size)
2812 filler = &fillers[LDIAG];
2815 if (graph->prev->size > graph->size) {
2816 append_to_rev_graph(graph, filler->separator);
2817 if (filler->line != ' ')
2818 append_to_rev_graph(graph, filler->line);
2823 update_rev_graph(struct rev_graph *graph)
2827 /* First, traverse all lines of revisions up to the active one. */
2828 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2829 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2832 push_rev_graph(graph->next, graph->rev[graph->pos]);
2835 /* Interleave the new revision parent(s). */
2836 for (i = 0; i < graph->parents->size; i++)
2837 push_rev_graph(graph->next, graph->parents->rev[i]);
2839 /* Lastly, put any remaining revisions. */
2840 for (i = graph->pos + 1; i < graph->size; i++)
2841 push_rev_graph(graph->next, graph->rev[i]);
2843 draw_rev_graph(graph);
2844 done_rev_graph(graph->prev);
2853 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2855 char buf[DATE_COLS + 1];
2856 struct commit *commit = line->data;
2857 enum line_type type;
2863 if (!*commit->author)
2866 wmove(view->win, lineno, col);
2870 wattrset(view->win, get_line_attr(type));
2871 wchgat(view->win, -1, 0, type, NULL);
2874 type = LINE_MAIN_COMMIT;
2875 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2878 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2879 waddnstr(view->win, buf, timelen);
2880 waddstr(view->win, " ");
2883 wmove(view->win, lineno, col);
2884 if (type != LINE_CURSOR)
2885 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2888 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2890 authorlen = strlen(commit->author);
2891 if (authorlen > AUTHOR_COLS - 2) {
2892 authorlen = AUTHOR_COLS - 2;
2898 waddnstr(view->win, commit->author, authorlen);
2899 if (type != LINE_CURSOR)
2900 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2901 waddch(view->win, '~');
2903 waddstr(view->win, commit->author);
2907 if (type != LINE_CURSOR)
2908 wattrset(view->win, A_NORMAL);
2910 if (opt_rev_graph && commit->graph_size) {
2913 wmove(view->win, lineno, col);
2914 /* Using waddch() instead of waddnstr() ensures that
2915 * they'll be rendered correctly for the cursor line. */
2916 for (i = 0; i < commit->graph_size; i++)
2917 waddch(view->win, commit->graph[i]);
2919 waddch(view->win, ' ');
2920 col += commit->graph_size + 1;
2923 wmove(view->win, lineno, col);
2929 if (type == LINE_CURSOR)
2931 else if (commit->refs[i]->tag)
2932 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2934 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2935 waddstr(view->win, "[");
2936 waddstr(view->win, commit->refs[i]->name);
2937 waddstr(view->win, "]");
2938 if (type != LINE_CURSOR)
2939 wattrset(view->win, A_NORMAL);
2940 waddstr(view->win, " ");
2941 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2942 } while (commit->refs[i++]->next);
2945 if (type != LINE_CURSOR)
2946 wattrset(view->win, get_line_attr(type));
2949 int titlelen = strlen(commit->title);
2951 if (col + titlelen > view->width)
2952 titlelen = view->width - col;
2954 waddnstr(view->win, commit->title, titlelen);
2960 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2962 main_read(struct view *view, char *line)
2964 static struct rev_graph *graph = graph_stacks;
2965 enum line_type type = get_line_type(line);
2966 struct commit *commit = view->lines
2967 ? view->line[view->lines - 1].data : NULL;
2971 commit = calloc(1, sizeof(struct commit));
2975 line += STRING_SIZE("commit ");
2977 view->line[view->lines++].data = commit;
2978 string_copy(commit->id, line);
2979 commit->refs = get_refs(commit->id);
2980 graph->commit = commit;
2985 line += STRING_SIZE("parent ");
2986 push_rev_graph(graph->parents, line);
2992 char *ident = line + STRING_SIZE("author ");
2993 char *end = strchr(ident, '<');
2998 update_rev_graph(graph);
2999 graph = graph->next;
3002 char *email = end + 1;
3004 for (; end > ident && isspace(end[-1]); end--) ;
3006 if (end == ident && *email) {
3008 end = strchr(ident, '>');
3009 for (; end > ident && isspace(end[-1]); end--) ;
3014 /* End is NULL or ident meaning there's no author. */
3018 string_copy(commit->author, ident);
3020 /* Parse epoch and timezone */
3022 char *secs = strchr(end + 1, '>');
3026 if (!secs || secs[1] != ' ')
3030 time = (time_t) atol(secs);
3031 zone = strchr(secs, ' ');
3032 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3036 tz = ('0' - zone[1]) * 60 * 60 * 10;
3037 tz += ('0' - zone[2]) * 60 * 60;
3038 tz += ('0' - zone[3]) * 60;
3039 tz += ('0' - zone[4]) * 60;
3046 gmtime_r(&time, &commit->time);
3054 /* Fill in the commit title if it has not already been set. */
3055 if (commit->title[0])
3058 /* Require titles to start with a non-space character at the
3059 * offset used by git log. */
3060 /* FIXME: More gracefull handling of titles; append "..." to
3061 * shortened titles, etc. */
3062 if (strncmp(line, " ", 4) ||
3066 string_copy(commit->title, line + 4);
3073 main_enter(struct view *view, struct line *line)
3075 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3077 open_view(view, REQ_VIEW_DIFF, flags);
3082 main_grep(struct view *view, struct line *line)
3084 struct commit *commit = line->data;
3085 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3086 char buf[DATE_COLS + 1];
3089 for (state = S_TITLE; state < S_END; state++) {
3093 case S_TITLE: text = commit->title; break;
3094 case S_AUTHOR: text = commit->author; break;
3096 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3105 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3113 main_select(struct view *view, struct line *line)
3115 struct commit *commit = line->data;
3117 string_copy(view->ref, commit->id);
3118 string_copy(ref_commit, view->ref);
3121 static struct view_ops main_ops = {
3132 * Unicode / UTF-8 handling
3134 * NOTE: Much of the following code for dealing with unicode is derived from
3135 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3136 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3139 /* I've (over)annotated a lot of code snippets because I am not entirely
3140 * confident that the approach taken by this small UTF-8 interface is correct.
3144 unicode_width(unsigned long c)
3147 (c <= 0x115f /* Hangul Jamo */
3150 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3152 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3153 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3154 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3155 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3156 || (c >= 0xffe0 && c <= 0xffe6)
3157 || (c >= 0x20000 && c <= 0x2fffd)
3158 || (c >= 0x30000 && c <= 0x3fffd)))
3164 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3165 * Illegal bytes are set one. */
3166 static const unsigned char utf8_bytes[256] = {
3167 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,
3168 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,
3169 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,
3170 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,
3171 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,
3172 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,
3173 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,
3174 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,
3177 /* Decode UTF-8 multi-byte representation into a unicode character. */
3178 static inline unsigned long
3179 utf8_to_unicode(const char *string, size_t length)
3181 unsigned long unicode;
3185 unicode = string[0];
3188 unicode = (string[0] & 0x1f) << 6;
3189 unicode += (string[1] & 0x3f);
3192 unicode = (string[0] & 0x0f) << 12;
3193 unicode += ((string[1] & 0x3f) << 6);
3194 unicode += (string[2] & 0x3f);
3197 unicode = (string[0] & 0x0f) << 18;
3198 unicode += ((string[1] & 0x3f) << 12);
3199 unicode += ((string[2] & 0x3f) << 6);
3200 unicode += (string[3] & 0x3f);
3203 unicode = (string[0] & 0x0f) << 24;
3204 unicode += ((string[1] & 0x3f) << 18);
3205 unicode += ((string[2] & 0x3f) << 12);
3206 unicode += ((string[3] & 0x3f) << 6);
3207 unicode += (string[4] & 0x3f);
3210 unicode = (string[0] & 0x01) << 30;
3211 unicode += ((string[1] & 0x3f) << 24);
3212 unicode += ((string[2] & 0x3f) << 18);
3213 unicode += ((string[3] & 0x3f) << 12);
3214 unicode += ((string[4] & 0x3f) << 6);
3215 unicode += (string[5] & 0x3f);
3218 die("Invalid unicode length");
3221 /* Invalid characters could return the special 0xfffd value but NUL
3222 * should be just as good. */
3223 return unicode > 0xffff ? 0 : unicode;
3226 /* Calculates how much of string can be shown within the given maximum width
3227 * and sets trimmed parameter to non-zero value if all of string could not be
3230 * Additionally, adds to coloffset how many many columns to move to align with
3231 * the expected position. Takes into account how multi-byte and double-width
3232 * characters will effect the cursor position.
3234 * Returns the number of bytes to output from string to satisfy max_width. */
3236 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3238 const char *start = string;
3239 const char *end = strchr(string, '\0');
3245 while (string < end) {
3246 int c = *(unsigned char *) string;
3247 unsigned char bytes = utf8_bytes[c];
3249 unsigned long unicode;
3251 if (string + bytes > end)
3254 /* Change representation to figure out whether
3255 * it is a single- or double-width character. */
3257 unicode = utf8_to_unicode(string, bytes);
3258 /* FIXME: Graceful handling of invalid unicode character. */
3262 ucwidth = unicode_width(unicode);
3264 if (width > max_width) {
3269 /* The column offset collects the differences between the
3270 * number of bytes encoding a character and the number of
3271 * columns will be used for rendering said character.
3273 * So if some character A is encoded in 2 bytes, but will be
3274 * represented on the screen using only 1 byte this will and up
3275 * adding 1 to the multi-byte column offset.
3277 * Assumes that no double-width character can be encoding in
3278 * less than two bytes. */
3279 if (bytes > ucwidth)
3280 mbwidth += bytes - ucwidth;
3285 *coloffset += mbwidth;
3287 return string - start;
3295 /* Whether or not the curses interface has been initialized. */
3296 static bool cursed = FALSE;
3298 /* The status window is used for polling keystrokes. */
3299 static WINDOW *status_win;
3301 /* Update status and title window. */
3303 report(const char *msg, ...)
3305 static bool empty = TRUE;
3306 struct view *view = display[current_view];
3308 if (!empty || *msg) {
3311 va_start(args, msg);
3314 wmove(status_win, 0, 0);
3316 vwprintw(status_win, msg, args);
3321 wrefresh(status_win);
3326 update_view_title(view);
3327 update_display_cursor();
3330 /* Controls when nodelay should be in effect when polling user input. */
3332 set_nonblocking_input(bool loading)
3334 static unsigned int loading_views;
3336 if ((loading == FALSE && loading_views-- == 1) ||
3337 (loading == TRUE && loading_views++ == 0))
3338 nodelay(status_win, loading);
3346 /* Initialize the curses library */
3347 if (isatty(STDIN_FILENO)) {
3348 cursed = !!initscr();
3350 /* Leave stdin and stdout alone when acting as a pager. */
3351 FILE *io = fopen("/dev/tty", "r+");
3354 die("Failed to open /dev/tty");
3355 cursed = !!newterm(NULL, io, io);
3359 die("Failed to initialize curses");
3361 nonl(); /* Tell curses not to do NL->CR/NL on output */
3362 cbreak(); /* Take input chars one at a time, no wait for \n */
3363 noecho(); /* Don't echo input */
3364 leaveok(stdscr, TRUE);
3369 getmaxyx(stdscr, y, x);
3370 status_win = newwin(1, 0, y - 1, 0);
3372 die("Failed to create status window");
3374 /* Enable keyboard mapping */
3375 keypad(status_win, TRUE);
3376 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3380 read_prompt(const char *prompt)
3382 enum { READING, STOP, CANCEL } status = READING;
3383 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3386 while (status == READING) {
3390 foreach_view (view, i)
3393 report("%s%.*s", prompt, pos, buf);
3394 /* Refresh, accept single keystroke of input */
3395 key = wgetch(status_win);
3400 status = pos ? STOP : CANCEL;
3418 if (pos >= sizeof(buf)) {
3419 report("Input string too long");
3424 buf[pos++] = (char) key;
3428 if (status == CANCEL) {
3429 /* Clear the status window */
3440 * Repository references
3443 static struct ref *refs;
3444 static size_t refs_size;
3446 /* Id <-> ref store */
3447 static struct ref ***id_refs;
3448 static size_t id_refs_size;
3450 static struct ref **
3453 struct ref ***tmp_id_refs;
3454 struct ref **ref_list = NULL;
3455 size_t ref_list_size = 0;
3458 for (i = 0; i < id_refs_size; i++)
3459 if (!strcmp(id, id_refs[i][0]->id))
3462 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3466 id_refs = tmp_id_refs;
3468 for (i = 0; i < refs_size; i++) {
3471 if (strcmp(id, refs[i].id))
3474 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3482 if (ref_list_size > 0)
3483 ref_list[ref_list_size - 1]->next = 1;
3484 ref_list[ref_list_size] = &refs[i];
3486 /* XXX: The properties of the commit chains ensures that we can
3487 * safely modify the shared ref. The repo references will
3488 * always be similar for the same id. */
3489 ref_list[ref_list_size]->next = 0;
3494 id_refs[id_refs_size++] = ref_list;
3500 read_ref(char *id, int idlen, char *name, int namelen)
3505 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3506 /* Commits referenced by tags has "^{}" appended. */
3507 if (name[namelen - 1] != '}')
3510 while (namelen > 0 && name[namelen] != '^')
3514 namelen -= STRING_SIZE("refs/tags/");
3515 name += STRING_SIZE("refs/tags/");
3517 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3518 namelen -= STRING_SIZE("refs/heads/");
3519 name += STRING_SIZE("refs/heads/");
3521 } else if (!strcmp(name, "HEAD")) {
3525 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3529 ref = &refs[refs_size++];
3530 ref->name = malloc(namelen + 1);
3534 strncpy(ref->name, name, namelen);
3535 ref->name[namelen] = 0;
3537 string_copy(ref->id, id);
3545 const char *cmd_env = getenv("TIG_LS_REMOTE");
3546 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3548 return read_properties(popen(cmd, "r"), "\t", read_ref);
3552 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3554 if (!strcmp(name, "i18n.commitencoding"))
3555 string_copy(opt_encoding, value);
3561 load_repo_config(void)
3563 return read_properties(popen("git repo-config --list", "r"),
3564 "=", read_repo_config_option);
3568 read_properties(FILE *pipe, const char *separators,
3569 int (*read_property)(char *, int, char *, int))
3571 char buffer[BUFSIZ];
3578 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3583 name = chomp_string(name);
3584 namelen = strcspn(name, separators);
3586 if (name[namelen]) {
3588 value = chomp_string(name + namelen + 1);
3589 valuelen = strlen(value);
3596 state = read_property(name, namelen, value, valuelen);
3599 if (state != ERR && ferror(pipe))
3612 static void __NORETURN
3615 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3621 static void __NORETURN
3622 die(const char *err, ...)
3628 va_start(args, err);
3629 fputs("tig: ", stderr);
3630 vfprintf(stderr, err, args);
3631 fputs("\n", stderr);
3638 main(int argc, char *argv[])
3641 enum request request;
3644 signal(SIGINT, quit);
3646 if (setlocale(LC_ALL, "")) {
3647 string_copy(opt_codeset, nl_langinfo(CODESET));
3650 if (load_options() == ERR)
3651 die("Failed to load user config.");
3653 /* Load the repo config file so options can be overwritten from
3654 * the command line. */
3655 if (load_repo_config() == ERR)
3656 die("Failed to load repo config.");
3658 if (!parse_options(argc, argv))
3661 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3662 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3663 if (opt_iconv == ICONV_NONE)
3664 die("Failed to initialize character set conversion");
3667 if (load_refs() == ERR)
3668 die("Failed to load refs.");
3670 /* Require a git repository unless when running in pager mode. */
3671 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3672 die("Not a git repository");
3674 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3675 view->cmd_env = getenv(view->cmd_env);
3677 request = opt_request;
3681 while (view_driver(display[current_view], request)) {
3685 foreach_view (view, i)
3688 /* Refresh, accept single keystroke of input */
3689 key = wgetch(status_win);
3691 request = get_keybinding(display[current_view]->keymap, key);
3693 /* Some low-level request handling. This keeps access to
3694 * status_win restricted. */
3698 char *cmd = read_prompt(":");
3700 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3701 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3702 opt_request = REQ_VIEW_DIFF;
3704 opt_request = REQ_VIEW_PAGER;
3713 case REQ_SEARCH_BACK:
3715 const char *prompt = request == REQ_SEARCH
3717 char *search = read_prompt(prompt);
3720 string_copy(opt_search, search);
3725 case REQ_SCREEN_RESIZE:
3729 getmaxyx(stdscr, height, width);
3731 /* Resize the status view and let the view driver take
3732 * care of resizing the displayed views. */
3733 wresize(status_win, 1, width);
3734 mvwin(status_win, height - 1, 0);
3735 wrefresh(status_win);