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-0.5.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
66 #define REVGRAPH_INIT 'I'
67 #define REVGRAPH_MERGE 'M'
68 #define REVGRAPH_BRANCH '+'
69 #define REVGRAPH_COMMIT '*'
70 #define REVGRAPH_LINE '|'
72 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
74 /* This color name can be used to refer to the default term colors. */
75 #define COLOR_DEFAULT (-1)
77 #define ICONV_NONE ((iconv_t) -1)
79 /* The format and size of the date column in the main view. */
80 #define DATE_FORMAT "%Y-%m-%d %H:%M"
81 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
83 #define AUTHOR_COLS 20
85 /* The default interval between line numbers. */
86 #define NUMBER_INTERVAL 1
90 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
92 #define TIG_LS_REMOTE \
93 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
95 #define TIG_DIFF_CMD \
96 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
99 "git log --cc --stat -n100 %s 2>/dev/null"
101 #define TIG_MAIN_CMD \
102 "git log --topo-order --pretty=raw %s 2>/dev/null"
104 #define TIG_TREE_CMD \
107 #define TIG_BLOB_CMD \
108 "git cat-file blob %s"
110 /* XXX: Needs to be defined to the empty string. */
111 #define TIG_HELP_CMD ""
112 #define TIG_PAGER_CMD ""
114 /* Some ascii-shorthands fitted into the ncurses namespace. */
116 #define KEY_RETURN '\r'
121 char *name; /* Ref name; tag or head names are shortened. */
122 char id[SIZEOF_REV]; /* Commit SHA1 ID */
123 unsigned int tag:1; /* Is it a tag? */
124 unsigned int remote:1; /* Is it a remote ref? */
125 unsigned int next:1; /* For ref lists: are there more refs? */
128 static struct ref **get_refs(char *id);
137 set_from_int_map(struct int_map *map, size_t map_size,
138 int *value, const char *name, int namelen)
143 for (i = 0; i < map_size; i++)
144 if (namelen == map[i].namelen &&
145 !strncasecmp(name, map[i].name, namelen)) {
146 *value = map[i].value;
159 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
161 if (srclen > dstlen - 1)
164 strncpy(dst, src, srclen);
168 /* Shorthands for safely copying into a fixed buffer. */
170 #define string_copy(dst, src) \
171 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
173 #define string_ncopy(dst, src, srclen) \
174 string_ncopy_do(dst, sizeof(dst), src, srclen)
177 chomp_string(char *name)
181 while (isspace(*name))
184 namelen = strlen(name) - 1;
185 while (namelen > 0 && isspace(name[namelen]))
192 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
195 size_t pos = bufpos ? *bufpos : 0;
198 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
204 return pos >= bufsize ? FALSE : TRUE;
207 #define string_format(buf, fmt, args...) \
208 string_nformat(buf, sizeof(buf), NULL, fmt, args)
210 #define string_format_from(buf, from, fmt, args...) \
211 string_nformat(buf, sizeof(buf), from, fmt, args)
214 string_enum_compare(const char *str1, const char *str2, int len)
218 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
220 /* Diff-Header == DIFF_HEADER */
221 for (i = 0; i < len; i++) {
222 if (toupper(str1[i]) == toupper(str2[i]))
225 if (string_enum_sep(str1[i]) &&
226 string_enum_sep(str2[i]))
229 return str1[i] - str2[i];
237 * NOTE: The following is a slightly modified copy of the git project's shell
238 * quoting routines found in the quote.c file.
240 * Help to copy the thing properly quoted for the shell safety. any single
241 * quote is replaced with '\'', any exclamation point is replaced with '\!',
242 * and the whole thing is enclosed in a
245 * original sq_quote result
246 * name ==> name ==> 'name'
247 * a b ==> a b ==> 'a b'
248 * a'b ==> a'\''b ==> 'a'\''b'
249 * a!b ==> a'\!'b ==> 'a'\!'b'
253 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
257 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
260 while ((c = *src++)) {
261 if (c == '\'' || c == '!') {
281 /* XXX: Keep the view request first and in sync with views[]. */ \
282 REQ_GROUP("View switching") \
283 REQ_(VIEW_MAIN, "Show main view"), \
284 REQ_(VIEW_DIFF, "Show diff view"), \
285 REQ_(VIEW_LOG, "Show log view"), \
286 REQ_(VIEW_TREE, "Show tree view"), \
287 REQ_(VIEW_BLOB, "Show blob view"), \
288 REQ_(VIEW_HELP, "Show help page"), \
289 REQ_(VIEW_PAGER, "Show pager view"), \
291 REQ_GROUP("View manipulation") \
292 REQ_(ENTER, "Enter current line and scroll"), \
293 REQ_(NEXT, "Move to next"), \
294 REQ_(PREVIOUS, "Move to previous"), \
295 REQ_(VIEW_NEXT, "Move focus to next view"), \
296 REQ_(VIEW_CLOSE, "Close the current view"), \
297 REQ_(QUIT, "Close all views and quit"), \
299 REQ_GROUP("Cursor navigation") \
300 REQ_(MOVE_UP, "Move cursor one line up"), \
301 REQ_(MOVE_DOWN, "Move cursor one line down"), \
302 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
303 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
304 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
305 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
307 REQ_GROUP("Scrolling") \
308 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
309 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
310 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
311 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
313 REQ_GROUP("Searching") \
314 REQ_(SEARCH, "Search the view"), \
315 REQ_(SEARCH_BACK, "Search backwards in the view"), \
316 REQ_(FIND_NEXT, "Find next search match"), \
317 REQ_(FIND_PREV, "Find previous search match"), \
320 REQ_(NONE, "Do nothing"), \
321 REQ_(PROMPT, "Bring up the prompt"), \
322 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
323 REQ_(SCREEN_RESIZE, "Resize the screen"), \
324 REQ_(SHOW_VERSION, "Show version information"), \
325 REQ_(STOP_LOADING, "Stop all loading views"), \
326 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
327 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
330 /* User action requests. */
332 #define REQ_GROUP(help)
333 #define REQ_(req, help) REQ_##req
335 /* Offset all requests to avoid conflicts with ncurses getch values. */
336 REQ_OFFSET = KEY_MAX + 1,
344 struct request_info {
345 enum request request;
351 static struct request_info req_info[] = {
352 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
353 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
360 get_request(const char *name)
362 int namelen = strlen(name);
365 for (i = 0; i < ARRAY_SIZE(req_info); i++)
366 if (req_info[i].namelen == namelen &&
367 !string_enum_compare(req_info[i].name, name, namelen))
368 return req_info[i].request;
378 static const char usage[] =
379 VERSION " (" __DATE__ ")\n"
381 "Usage: tig [options]\n"
382 " or: tig [options] [--] [git log options]\n"
383 " or: tig [options] log [git log options]\n"
384 " or: tig [options] diff [git diff options]\n"
385 " or: tig [options] show [git show options]\n"
386 " or: tig [options] < [git command output]\n"
389 " -l Start up in log view\n"
390 " -d Start up in diff view\n"
391 " -n[I], --line-number[=I] Show line numbers with given interval\n"
392 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
393 " -- Mark end of tig options\n"
394 " -v, --version Show version and exit\n"
395 " -h, --help Show help message and exit\n";
397 /* Option and state variables. */
398 static bool opt_line_number = FALSE;
399 static bool opt_rev_graph = TRUE;
400 static int opt_num_interval = NUMBER_INTERVAL;
401 static int opt_tab_size = TABSIZE;
402 static enum request opt_request = REQ_VIEW_MAIN;
403 static char opt_cmd[SIZEOF_STR] = "";
404 static char opt_path[SIZEOF_STR] = "";
405 static FILE *opt_pipe = NULL;
406 static char opt_encoding[20] = "UTF-8";
407 static bool opt_utf8 = TRUE;
408 static char opt_codeset[20] = "UTF-8";
409 static iconv_t opt_iconv = ICONV_NONE;
410 static char opt_search[SIZEOF_STR] = "";
418 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
428 int namelen = strlen(name);
432 if (strncmp(opt, name, namelen))
435 if (opt[namelen] == '=')
436 value = opt + namelen + 1;
439 if (!short_name || opt[1] != short_name)
444 va_start(args, type);
445 if (type == OPT_INT) {
446 number = va_arg(args, int *);
448 *number = atoi(value);
455 /* Returns the index of log or diff command or -1 to exit. */
457 parse_options(int argc, char *argv[])
461 for (i = 1; i < argc; i++) {
464 if (!strcmp(opt, "log") ||
465 !strcmp(opt, "diff") ||
466 !strcmp(opt, "show")) {
467 opt_request = opt[0] == 'l'
468 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
472 if (opt[0] && opt[0] != '-')
475 if (!strcmp(opt, "-l")) {
476 opt_request = REQ_VIEW_LOG;
480 if (!strcmp(opt, "-d")) {
481 opt_request = REQ_VIEW_DIFF;
485 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
486 opt_line_number = TRUE;
490 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
491 opt_tab_size = MIN(opt_tab_size, TABSIZE);
495 if (check_option(opt, 'v', "version", OPT_NONE)) {
496 printf("tig version %s\n", VERSION);
500 if (check_option(opt, 'h', "help", OPT_NONE)) {
505 if (!strcmp(opt, "--")) {
510 die("unknown option '%s'\n\n%s", opt, usage);
513 if (!isatty(STDIN_FILENO)) {
514 opt_request = REQ_VIEW_PAGER;
517 } else if (i < argc) {
520 if (opt_request == REQ_VIEW_MAIN)
521 /* XXX: This is vulnerable to the user overriding
522 * options required for the main view parser. */
523 string_copy(opt_cmd, "git log --pretty=raw");
525 string_copy(opt_cmd, "git");
526 buf_size = strlen(opt_cmd);
528 while (buf_size < sizeof(opt_cmd) && i < argc) {
529 opt_cmd[buf_size++] = ' ';
530 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
533 if (buf_size >= sizeof(opt_cmd))
534 die("command too long");
536 opt_cmd[buf_size] = 0;
539 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
547 * Line-oriented content detection.
551 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
553 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
554 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
555 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
556 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
557 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
558 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
559 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
563 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
564 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
566 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
567 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
568 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
570 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
571 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
572 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
574 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
575 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
576 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
577 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
578 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
579 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
580 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
581 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
582 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
583 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
584 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
585 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
586 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
587 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
588 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
589 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
590 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
591 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
592 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
595 #define LINE(type, line, fg, bg, attr) \
602 const char *name; /* Option name. */
603 int namelen; /* Size of option name. */
604 const char *line; /* The start of line to match. */
605 int linelen; /* Size of string to match. */
606 int fg, bg, attr; /* Color and text attributes for the lines. */
609 static struct line_info line_info[] = {
610 #define LINE(type, line, fg, bg, attr) \
611 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
616 static enum line_type
617 get_line_type(char *line)
619 int linelen = strlen(line);
622 for (type = 0; type < ARRAY_SIZE(line_info); type++)
623 /* Case insensitive search matches Signed-off-by lines better. */
624 if (linelen >= line_info[type].linelen &&
625 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
632 get_line_attr(enum line_type type)
634 assert(type < ARRAY_SIZE(line_info));
635 return COLOR_PAIR(type) | line_info[type].attr;
638 static struct line_info *
639 get_line_info(char *name, int namelen)
643 for (type = 0; type < ARRAY_SIZE(line_info); type++)
644 if (namelen == line_info[type].namelen &&
645 !string_enum_compare(line_info[type].name, name, namelen))
646 return &line_info[type];
654 int default_bg = COLOR_BLACK;
655 int default_fg = COLOR_WHITE;
660 if (use_default_colors() != ERR) {
665 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
666 struct line_info *info = &line_info[type];
667 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
668 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
670 init_pair(type, fg, bg);
678 unsigned int selected:1;
680 void *data; /* User data */
690 enum request request;
691 struct keybinding *next;
694 static struct keybinding default_keybindings[] = {
696 { 'm', REQ_VIEW_MAIN },
697 { 'd', REQ_VIEW_DIFF },
698 { 'l', REQ_VIEW_LOG },
699 { 't', REQ_VIEW_TREE },
700 { 'f', REQ_VIEW_BLOB },
701 { 'p', REQ_VIEW_PAGER },
702 { 'h', REQ_VIEW_HELP },
704 /* View manipulation */
705 { 'q', REQ_VIEW_CLOSE },
706 { KEY_TAB, REQ_VIEW_NEXT },
707 { KEY_RETURN, REQ_ENTER },
708 { KEY_UP, REQ_PREVIOUS },
709 { KEY_DOWN, REQ_NEXT },
711 /* Cursor navigation */
712 { 'k', REQ_MOVE_UP },
713 { 'j', REQ_MOVE_DOWN },
714 { KEY_HOME, REQ_MOVE_FIRST_LINE },
715 { KEY_END, REQ_MOVE_LAST_LINE },
716 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
717 { ' ', REQ_MOVE_PAGE_DOWN },
718 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
719 { 'b', REQ_MOVE_PAGE_UP },
720 { '-', REQ_MOVE_PAGE_UP },
723 { KEY_IC, REQ_SCROLL_LINE_UP },
724 { KEY_DC, REQ_SCROLL_LINE_DOWN },
725 { 'w', REQ_SCROLL_PAGE_UP },
726 { 's', REQ_SCROLL_PAGE_DOWN },
730 { '?', REQ_SEARCH_BACK },
731 { 'n', REQ_FIND_NEXT },
732 { 'N', REQ_FIND_PREV },
736 { 'z', REQ_STOP_LOADING },
737 { 'v', REQ_SHOW_VERSION },
738 { 'r', REQ_SCREEN_REDRAW },
739 { '.', REQ_TOGGLE_LINENO },
740 { 'g', REQ_TOGGLE_REV_GRAPH },
743 /* Using the ncurses SIGWINCH handler. */
744 { KEY_RESIZE, REQ_SCREEN_RESIZE },
747 #define KEYMAP_INFO \
758 #define KEYMAP_(name) KEYMAP_##name
763 static struct int_map keymap_table[] = {
764 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
769 #define set_keymap(map, name) \
770 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
772 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
775 add_keybinding(enum keymap keymap, enum request request, int key)
777 struct keybinding *keybinding;
779 keybinding = calloc(1, sizeof(*keybinding));
781 die("Failed to allocate keybinding");
783 keybinding->alias = key;
784 keybinding->request = request;
785 keybinding->next = keybindings[keymap];
786 keybindings[keymap] = keybinding;
789 /* Looks for a key binding first in the given map, then in the generic map, and
790 * lastly in the default keybindings. */
792 get_keybinding(enum keymap keymap, int key)
794 struct keybinding *kbd;
797 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
798 if (kbd->alias == key)
801 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
802 if (kbd->alias == key)
805 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
806 if (default_keybindings[i].alias == key)
807 return default_keybindings[i].request;
809 return (enum request) key;
818 static struct key key_table[] = {
819 { "Enter", KEY_RETURN },
821 { "Backspace", KEY_BACKSPACE },
823 { "Escape", KEY_ESC },
824 { "Left", KEY_LEFT },
825 { "Right", KEY_RIGHT },
827 { "Down", KEY_DOWN },
828 { "Insert", KEY_IC },
829 { "Delete", KEY_DC },
831 { "Home", KEY_HOME },
833 { "PageUp", KEY_PPAGE },
834 { "PageDown", KEY_NPAGE },
844 { "F10", KEY_F(10) },
845 { "F11", KEY_F(11) },
846 { "F12", KEY_F(12) },
850 get_key_value(const char *name)
854 for (i = 0; i < ARRAY_SIZE(key_table); i++)
855 if (!strcasecmp(key_table[i].name, name))
856 return key_table[i].value;
858 if (strlen(name) == 1 && isprint(*name))
865 get_key(enum request request)
867 static char buf[BUFSIZ];
868 static char key_char[] = "'X'";
875 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
876 struct keybinding *keybinding = &default_keybindings[i];
880 if (keybinding->request != request)
883 for (key = 0; key < ARRAY_SIZE(key_table); key++)
884 if (key_table[key].value == keybinding->alias)
885 seq = key_table[key].name;
888 keybinding->alias < 127 &&
889 isprint(keybinding->alias)) {
890 key_char[1] = (char) keybinding->alias;
897 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
898 return "Too many keybindings!";
907 * User config file handling.
910 static struct int_map color_map[] = {
911 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
923 #define set_color(color, name) \
924 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
926 static struct int_map attr_map[] = {
927 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
937 #define set_attribute(attr, name) \
938 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
940 static int config_lineno;
941 static bool config_errors;
942 static char *config_msg;
944 /* Wants: object fgcolor bgcolor [attr] */
946 option_color_command(int argc, char *argv[])
948 struct line_info *info;
950 if (argc != 3 && argc != 4) {
951 config_msg = "Wrong number of arguments given to color command";
955 info = get_line_info(argv[0], strlen(argv[0]));
957 config_msg = "Unknown color name";
961 if (set_color(&info->fg, argv[1]) == ERR ||
962 set_color(&info->bg, argv[2]) == ERR) {
963 config_msg = "Unknown color";
967 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
968 config_msg = "Unknown attribute";
975 /* Wants: name = value */
977 option_set_command(int argc, char *argv[])
980 config_msg = "Wrong number of arguments given to set command";
984 if (strcmp(argv[1], "=")) {
985 config_msg = "No value assigned";
989 if (!strcmp(argv[0], "show-rev-graph")) {
990 opt_rev_graph = (!strcmp(argv[2], "1") ||
991 !strcmp(argv[2], "true") ||
992 !strcmp(argv[2], "yes"));
996 if (!strcmp(argv[0], "line-number-interval")) {
997 opt_num_interval = atoi(argv[2]);
1001 if (!strcmp(argv[0], "tab-size")) {
1002 opt_tab_size = atoi(argv[2]);
1006 if (!strcmp(argv[0], "commit-encoding")) {
1007 char *arg = argv[2];
1008 int delimiter = *arg;
1011 switch (delimiter) {
1014 for (arg++, i = 0; arg[i]; i++)
1015 if (arg[i] == delimiter) {
1020 string_copy(opt_encoding, arg);
1025 config_msg = "Unknown variable name";
1029 /* Wants: mode request key */
1031 option_bind_command(int argc, char *argv[])
1033 enum request request;
1038 config_msg = "Wrong number of arguments given to bind command";
1042 if (set_keymap(&keymap, argv[0]) == ERR) {
1043 config_msg = "Unknown key map";
1047 key = get_key_value(argv[1]);
1049 config_msg = "Unknown key";
1053 request = get_request(argv[2]);
1054 if (request == REQ_UNKNOWN) {
1055 config_msg = "Unknown request name";
1059 add_keybinding(keymap, request, key);
1065 set_option(char *opt, char *value)
1072 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1073 argv[argc++] = value;
1080 while (isspace(*value))
1084 if (!strcmp(opt, "color"))
1085 return option_color_command(argc, argv);
1087 if (!strcmp(opt, "set"))
1088 return option_set_command(argc, argv);
1090 if (!strcmp(opt, "bind"))
1091 return option_bind_command(argc, argv);
1093 config_msg = "Unknown option command";
1098 read_option(char *opt, int optlen, char *value, int valuelen)
1103 config_msg = "Internal error";
1105 /* Check for comment markers, since read_properties() will
1106 * only ensure opt and value are split at first " \t". */
1107 optlen = strcspn(opt, "#");
1111 if (opt[optlen] != 0) {
1112 config_msg = "No option value";
1116 /* Look for comment endings in the value. */
1117 int len = strcspn(value, "#");
1119 if (len < valuelen) {
1121 value[valuelen] = 0;
1124 status = set_option(opt, value);
1127 if (status == ERR) {
1128 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1129 config_lineno, optlen, opt, config_msg);
1130 config_errors = TRUE;
1133 /* Always keep going if errors are encountered. */
1140 char *home = getenv("HOME");
1141 char buf[SIZEOF_STR];
1145 config_errors = FALSE;
1147 if (!home || !string_format(buf, "%s/.tigrc", home))
1150 /* It's ok that the file doesn't exist. */
1151 file = fopen(buf, "r");
1155 if (read_properties(file, " \t", read_option) == ERR ||
1156 config_errors == TRUE)
1157 fprintf(stderr, "Errors while loading %s.\n", buf);
1170 /* The display array of active views and the index of the current view. */
1171 static struct view *display[2];
1172 static unsigned int current_view;
1174 /* Reading from the prompt? */
1175 static bool input_mode = FALSE;
1177 #define foreach_displayed_view(view, i) \
1178 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1180 #define displayed_views() (display[1] != NULL ? 2 : 1)
1182 /* Current head and commit ID */
1183 static char ref_blob[SIZEOF_REF] = "";
1184 static char ref_commit[SIZEOF_REF] = "HEAD";
1185 static char ref_head[SIZEOF_REF] = "HEAD";
1188 const char *name; /* View name */
1189 const char *cmd_fmt; /* Default command line format */
1190 const char *cmd_env; /* Command line set via environment */
1191 const char *id; /* Points to either of ref_{head,commit,blob} */
1193 struct view_ops *ops; /* View operations */
1195 enum keymap keymap; /* What keymap does this view have */
1197 char cmd[SIZEOF_STR]; /* Command buffer */
1198 char ref[SIZEOF_REF]; /* Hovered commit reference */
1199 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1201 int height, width; /* The width and height of the main window */
1202 WINDOW *win; /* The main window */
1203 WINDOW *title; /* The title window living below the main window */
1206 unsigned long offset; /* Offset of the window top */
1207 unsigned long lineno; /* Current line number */
1210 char grep[SIZEOF_STR]; /* Search string */
1211 regex_t *regex; /* Pre-compiled regex */
1213 /* If non-NULL, points to the view that opened this view. If this view
1214 * is closed tig will switch back to the parent view. */
1215 struct view *parent;
1218 unsigned long lines; /* Total number of lines */
1219 struct line *line; /* Line index */
1220 unsigned long line_size;/* Total number of allocated lines */
1221 unsigned int digits; /* Number of digits in the lines member. */
1229 /* What type of content being displayed. Used in the title bar. */
1231 /* Draw one line; @lineno must be < view->height. */
1232 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1233 /* Read one line; updates view->line. */
1234 bool (*read)(struct view *view, char *data);
1235 /* Depending on view, change display based on current line. */
1236 bool (*enter)(struct view *view, struct line *line);
1237 /* Search for regex in a line. */
1238 bool (*grep)(struct view *view, struct line *line);
1240 void (*select)(struct view *view, struct line *line);
1243 static struct view_ops pager_ops;
1244 static struct view_ops main_ops;
1245 static struct view_ops tree_ops;
1246 static struct view_ops blob_ops;
1248 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1249 { name, cmd, #env, ref, ops, map}
1251 #define VIEW_(id, name, ops, ref) \
1252 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1255 static struct view views[] = {
1256 VIEW_(MAIN, "main", &main_ops, ref_head),
1257 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1258 VIEW_(LOG, "log", &pager_ops, ref_head),
1259 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1260 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1261 VIEW_(HELP, "help", &pager_ops, "static"),
1262 VIEW_(PAGER, "pager", &pager_ops, "static"),
1265 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1267 #define foreach_view(view, i) \
1268 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1270 #define view_is_displayed(view) \
1271 (view == display[0] || view == display[1])
1274 draw_view_line(struct view *view, unsigned int lineno)
1277 bool selected = (view->offset + lineno == view->lineno);
1280 assert(view_is_displayed(view));
1282 if (view->offset + lineno >= view->lines)
1285 line = &view->line[view->offset + lineno];
1288 line->selected = TRUE;
1289 view->ops->select(view, line);
1290 } else if (line->selected) {
1291 line->selected = FALSE;
1292 wmove(view->win, lineno, 0);
1293 wclrtoeol(view->win);
1296 scrollok(view->win, FALSE);
1297 draw_ok = view->ops->draw(view, line, lineno, selected);
1298 scrollok(view->win, TRUE);
1304 redraw_view_from(struct view *view, int lineno)
1306 assert(0 <= lineno && lineno < view->height);
1308 for (; lineno < view->height; lineno++) {
1309 if (!draw_view_line(view, lineno))
1313 redrawwin(view->win);
1315 wnoutrefresh(view->win);
1317 wrefresh(view->win);
1321 redraw_view(struct view *view)
1324 redraw_view_from(view, 0);
1329 update_view_title(struct view *view)
1331 char buf[SIZEOF_STR];
1332 char state[SIZEOF_STR];
1333 size_t bufpos = 0, statelen = 0;
1335 assert(view_is_displayed(view));
1337 if (view->lines || view->pipe) {
1338 unsigned int view_lines = view->offset + view->height;
1339 unsigned int lines = view->lines
1340 ? MIN(view_lines, view->lines) * 100 / view->lines
1343 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1350 time_t secs = time(NULL) - view->start_time;
1352 /* Three git seconds are a long time ... */
1354 string_format_from(state, &statelen, " %lds", secs);
1358 string_format_from(buf, &bufpos, "[%s]", view->name);
1359 if (*view->ref && bufpos < view->width) {
1360 size_t refsize = strlen(view->ref);
1361 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1363 if (minsize < view->width)
1364 refsize = view->width - minsize + 7;
1365 string_format_from(buf, &bufpos, " %.*s", refsize, view->ref);
1368 if (statelen && bufpos < view->width) {
1369 string_format_from(buf, &bufpos, " %s", state);
1372 if (view == display[current_view])
1373 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1375 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1377 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1378 wclrtoeol(view->title);
1379 wmove(view->title, 0, view->width - 1);
1382 wnoutrefresh(view->title);
1384 wrefresh(view->title);
1388 resize_display(void)
1391 struct view *base = display[0];
1392 struct view *view = display[1] ? display[1] : display[0];
1394 /* Setup window dimensions */
1396 getmaxyx(stdscr, base->height, base->width);
1398 /* Make room for the status window. */
1402 /* Horizontal split. */
1403 view->width = base->width;
1404 view->height = SCALE_SPLIT_VIEW(base->height);
1405 base->height -= view->height;
1407 /* Make room for the title bar. */
1411 /* Make room for the title bar. */
1416 foreach_displayed_view (view, i) {
1418 view->win = newwin(view->height, 0, offset, 0);
1420 die("Failed to create %s view", view->name);
1422 scrollok(view->win, TRUE);
1424 view->title = newwin(1, 0, offset + view->height, 0);
1426 die("Failed to create title window");
1429 wresize(view->win, view->height, view->width);
1430 mvwin(view->win, offset, 0);
1431 mvwin(view->title, offset + view->height, 0);
1434 offset += view->height + 1;
1439 redraw_display(void)
1444 foreach_displayed_view (view, i) {
1446 update_view_title(view);
1451 update_display_cursor(struct view *view)
1453 /* Move the cursor to the right-most column of the cursor line.
1455 * XXX: This could turn out to be a bit expensive, but it ensures that
1456 * the cursor does not jump around. */
1458 wmove(view->win, view->lineno - view->offset, view->width - 1);
1459 wrefresh(view->win);
1467 /* Scrolling backend */
1469 do_scroll_view(struct view *view, int lines)
1471 bool redraw_current_line = FALSE;
1473 /* The rendering expects the new offset. */
1474 view->offset += lines;
1476 assert(0 <= view->offset && view->offset < view->lines);
1479 /* Move current line into the view. */
1480 if (view->lineno < view->offset) {
1481 view->lineno = view->offset;
1482 redraw_current_line = TRUE;
1483 } else if (view->lineno >= view->offset + view->height) {
1484 view->lineno = view->offset + view->height - 1;
1485 redraw_current_line = TRUE;
1488 assert(view->offset <= view->lineno && view->lineno < view->lines);
1490 /* Redraw the whole screen if scrolling is pointless. */
1491 if (view->height < ABS(lines)) {
1495 int line = lines > 0 ? view->height - lines : 0;
1496 int end = line + ABS(lines);
1498 wscrl(view->win, lines);
1500 for (; line < end; line++) {
1501 if (!draw_view_line(view, line))
1505 if (redraw_current_line)
1506 draw_view_line(view, view->lineno - view->offset);
1509 redrawwin(view->win);
1510 wrefresh(view->win);
1514 /* Scroll frontend */
1516 scroll_view(struct view *view, enum request request)
1520 assert(view_is_displayed(view));
1523 case REQ_SCROLL_PAGE_DOWN:
1524 lines = view->height;
1525 case REQ_SCROLL_LINE_DOWN:
1526 if (view->offset + lines > view->lines)
1527 lines = view->lines - view->offset;
1529 if (lines == 0 || view->offset + view->height >= view->lines) {
1530 report("Cannot scroll beyond the last line");
1535 case REQ_SCROLL_PAGE_UP:
1536 lines = view->height;
1537 case REQ_SCROLL_LINE_UP:
1538 if (lines > view->offset)
1539 lines = view->offset;
1542 report("Cannot scroll beyond the first line");
1550 die("request %d not handled in switch", request);
1553 do_scroll_view(view, lines);
1558 move_view(struct view *view, enum request request)
1560 int scroll_steps = 0;
1564 case REQ_MOVE_FIRST_LINE:
1565 steps = -view->lineno;
1568 case REQ_MOVE_LAST_LINE:
1569 steps = view->lines - view->lineno - 1;
1572 case REQ_MOVE_PAGE_UP:
1573 steps = view->height > view->lineno
1574 ? -view->lineno : -view->height;
1577 case REQ_MOVE_PAGE_DOWN:
1578 steps = view->lineno + view->height >= view->lines
1579 ? view->lines - view->lineno - 1 : view->height;
1591 die("request %d not handled in switch", request);
1594 if (steps <= 0 && view->lineno == 0) {
1595 report("Cannot move beyond the first line");
1598 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1599 report("Cannot move beyond the last line");
1603 /* Move the current line */
1604 view->lineno += steps;
1605 assert(0 <= view->lineno && view->lineno < view->lines);
1607 /* Check whether the view needs to be scrolled */
1608 if (view->lineno < view->offset ||
1609 view->lineno >= view->offset + view->height) {
1610 scroll_steps = steps;
1611 if (steps < 0 && -steps > view->offset) {
1612 scroll_steps = -view->offset;
1614 } else if (steps > 0) {
1615 if (view->lineno == view->lines - 1 &&
1616 view->lines > view->height) {
1617 scroll_steps = view->lines - view->offset - 1;
1618 if (scroll_steps >= view->height)
1619 scroll_steps -= view->height - 1;
1624 if (!view_is_displayed(view)) {
1625 view->offset += steps;
1626 view->ops->select(view, &view->line[view->lineno]);
1630 /* Repaint the old "current" line if we be scrolling */
1631 if (ABS(steps) < view->height)
1632 draw_view_line(view, view->lineno - steps - view->offset);
1635 do_scroll_view(view, scroll_steps);
1639 /* Draw the current line */
1640 draw_view_line(view, view->lineno - view->offset);
1642 redrawwin(view->win);
1643 wrefresh(view->win);
1652 static void search_view(struct view *view, enum request request);
1655 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1657 assert(view_is_displayed(view));
1659 if (!view->ops->grep(view, line))
1662 if (lineno - view->offset >= view->height) {
1663 view->offset = lineno;
1664 view->lineno = lineno;
1668 unsigned long old_lineno = view->lineno - view->offset;
1670 view->lineno = lineno;
1671 draw_view_line(view, old_lineno);
1673 draw_view_line(view, view->lineno - view->offset);
1674 redrawwin(view->win);
1675 wrefresh(view->win);
1678 report("Line %ld matches '%s'", lineno + 1, view->grep);
1683 find_next(struct view *view, enum request request)
1685 unsigned long lineno = view->lineno;
1690 report("No previous search");
1692 search_view(view, request);
1702 case REQ_SEARCH_BACK:
1711 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1712 lineno += direction;
1714 /* Note, lineno is unsigned long so will wrap around in which case it
1715 * will become bigger than view->lines. */
1716 for (; lineno < view->lines; lineno += direction) {
1717 struct line *line = &view->line[lineno];
1719 if (find_next_line(view, lineno, line))
1723 report("No match found for '%s'", view->grep);
1727 search_view(struct view *view, enum request request)
1732 regfree(view->regex);
1735 view->regex = calloc(1, sizeof(*view->regex));
1740 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1741 if (regex_err != 0) {
1742 char buf[SIZEOF_STR] = "unknown error";
1744 regerror(regex_err, view->regex, buf, sizeof(buf));
1745 report("Search failed: %s", buf);
1749 string_copy(view->grep, opt_search);
1751 find_next(view, request);
1755 * Incremental updating
1759 end_update(struct view *view)
1763 set_nonblocking_input(FALSE);
1764 if (view->pipe == stdin)
1772 begin_update(struct view *view)
1774 const char *id = view->id;
1780 string_copy(view->cmd, opt_cmd);
1782 /* When running random commands, the view ref could have become
1783 * invalid so clear it. */
1786 } else if (view == VIEW(REQ_VIEW_TREE)) {
1787 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1789 if (strcmp(view->vid, view->id))
1792 if (!string_format(view->cmd, format, id, opt_path))
1796 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1798 if (!string_format(view->cmd, format, id, id, id, id, id))
1802 /* Special case for the pager view. */
1804 view->pipe = opt_pipe;
1807 view->pipe = popen(view->cmd, "r");
1813 set_nonblocking_input(TRUE);
1818 string_copy(view->vid, id);
1823 for (i = 0; i < view->lines; i++)
1824 if (view->line[i].data)
1825 free(view->line[i].data);
1831 view->start_time = time(NULL);
1836 static struct line *
1837 realloc_lines(struct view *view, size_t line_size)
1839 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1845 view->line_size = line_size;
1850 update_view(struct view *view)
1852 char in_buffer[BUFSIZ];
1853 char out_buffer[BUFSIZ * 2];
1855 /* The number of lines to read. If too low it will cause too much
1856 * redrawing (and possible flickering), if too high responsiveness
1858 unsigned long lines = view->height;
1859 int redraw_from = -1;
1864 /* Only redraw if lines are visible. */
1865 if (view->offset + view->height >= view->lines)
1866 redraw_from = view->lines - view->offset;
1868 /* FIXME: This is probably not perfect for backgrounded views. */
1869 if (!realloc_lines(view, view->lines + lines))
1872 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1873 size_t linelen = strlen(line);
1876 line[linelen - 1] = 0;
1878 if (opt_iconv != ICONV_NONE) {
1880 size_t inlen = linelen;
1882 char *outbuf = out_buffer;
1883 size_t outlen = sizeof(out_buffer);
1887 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1888 if (ret != (size_t) -1) {
1890 linelen = strlen(out_buffer);
1894 if (!view->ops->read(view, line))
1904 lines = view->lines;
1905 for (digits = 0; lines; digits++)
1908 /* Keep the displayed view in sync with line number scaling. */
1909 if (digits != view->digits) {
1910 view->digits = digits;
1915 if (!view_is_displayed(view))
1918 if (view == VIEW(REQ_VIEW_TREE)) {
1919 /* Clear the view and redraw everything since the tree sorting
1920 * might have rearranged things. */
1923 } else if (redraw_from >= 0) {
1924 /* If this is an incremental update, redraw the previous line
1925 * since for commits some members could have changed when
1926 * loading the main view. */
1927 if (redraw_from > 0)
1930 /* Incrementally draw avoids flickering. */
1931 redraw_view_from(view, redraw_from);
1934 /* Update the title _after_ the redraw so that if the redraw picks up a
1935 * commit reference in view->ref it'll be available here. */
1936 update_view_title(view);
1939 if (ferror(view->pipe)) {
1940 report("Failed to read: %s", strerror(errno));
1943 } else if (feof(view->pipe)) {
1951 report("Allocation failure");
1954 view->ops->read(view, NULL);
1964 static void open_help_view(struct view *view)
1967 int lines = ARRAY_SIZE(req_info) + 2;
1970 if (view->lines > 0)
1973 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1974 if (!req_info[i].request)
1977 view->line = calloc(lines, sizeof(*view->line));
1979 report("Allocation failure");
1983 view->ops->read(view, "Quick reference for tig keybindings:");
1985 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1988 if (!req_info[i].request) {
1989 view->ops->read(view, "");
1990 view->ops->read(view, req_info[i].help);
1994 key = get_key(req_info[i].request);
1995 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1998 view->ops->read(view, buf);
2003 OPEN_DEFAULT = 0, /* Use default view switching. */
2004 OPEN_SPLIT = 1, /* Split current view. */
2005 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2006 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2010 open_view(struct view *prev, enum request request, enum open_flags flags)
2012 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2013 bool split = !!(flags & OPEN_SPLIT);
2014 bool reload = !!(flags & OPEN_RELOAD);
2015 struct view *view = VIEW(request);
2016 int nviews = displayed_views();
2017 struct view *base_view = display[0];
2019 if (view == prev && nviews == 1 && !reload) {
2020 report("Already in %s view", view->name);
2024 if (view == VIEW(REQ_VIEW_HELP)) {
2025 open_help_view(view);
2027 } else if ((reload || strcmp(view->vid, view->id)) &&
2028 !begin_update(view)) {
2029 report("Failed to load %s view", view->name);
2038 /* Maximize the current view. */
2039 memset(display, 0, sizeof(display));
2041 display[current_view] = view;
2044 /* Resize the view when switching between split- and full-screen,
2045 * or when switching between two different full-screen views. */
2046 if (nviews != displayed_views() ||
2047 (nviews == 1 && base_view != display[0]))
2050 if (split && prev->lineno - prev->offset >= prev->height) {
2051 /* Take the title line into account. */
2052 int lines = prev->lineno - prev->offset - prev->height + 1;
2054 /* Scroll the view that was split if the current line is
2055 * outside the new limited view. */
2056 do_scroll_view(prev, lines);
2059 if (prev && view != prev) {
2060 if (split && !backgrounded) {
2061 /* "Blur" the previous view. */
2062 update_view_title(prev);
2065 view->parent = prev;
2068 if (view->pipe && view->lines == 0) {
2069 /* Clear the old view and let the incremental updating refill
2078 /* If the view is backgrounded the above calls to report()
2079 * won't redraw the view title. */
2081 update_view_title(view);
2086 * User request switch noodle
2090 view_driver(struct view *view, enum request request)
2097 case REQ_MOVE_PAGE_UP:
2098 case REQ_MOVE_PAGE_DOWN:
2099 case REQ_MOVE_FIRST_LINE:
2100 case REQ_MOVE_LAST_LINE:
2101 move_view(view, request);
2104 case REQ_SCROLL_LINE_DOWN:
2105 case REQ_SCROLL_LINE_UP:
2106 case REQ_SCROLL_PAGE_DOWN:
2107 case REQ_SCROLL_PAGE_UP:
2108 scroll_view(view, request);
2113 report("No file chosen, press 't' to open tree view");
2122 case REQ_VIEW_PAGER:
2123 open_view(view, request, OPEN_DEFAULT);
2128 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2130 if ((view == VIEW(REQ_VIEW_DIFF) &&
2131 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2132 (view == VIEW(REQ_VIEW_BLOB) &&
2133 view->parent == VIEW(REQ_VIEW_TREE))) {
2134 view = view->parent;
2135 move_view(view, request);
2136 if (view_is_displayed(view))
2137 update_view_title(view);
2139 move_view(view, request);
2146 report("Nothing to enter");
2149 return view->ops->enter(view, &view->line[view->lineno]);
2153 int nviews = displayed_views();
2154 int next_view = (current_view + 1) % nviews;
2156 if (next_view == current_view) {
2157 report("Only one view is displayed");
2161 current_view = next_view;
2162 /* Blur out the title of the previous view. */
2163 update_view_title(view);
2167 case REQ_TOGGLE_LINENO:
2168 opt_line_number = !opt_line_number;
2172 case REQ_TOGGLE_REV_GRAPH:
2173 opt_rev_graph = !opt_rev_graph;
2178 /* Always reload^Wrerun commands from the prompt. */
2179 open_view(view, opt_request, OPEN_RELOAD);
2183 case REQ_SEARCH_BACK:
2184 search_view(view, request);
2189 find_next(view, request);
2192 case REQ_STOP_LOADING:
2193 for (i = 0; i < ARRAY_SIZE(views); i++) {
2196 report("Stopped loading the %s view", view->name),
2201 case REQ_SHOW_VERSION:
2202 report("%s (built %s)", VERSION, __DATE__);
2205 case REQ_SCREEN_RESIZE:
2208 case REQ_SCREEN_REDRAW:
2216 case REQ_VIEW_CLOSE:
2217 /* XXX: Mark closed views by letting view->parent point to the
2218 * view itself. Parents to closed view should never be
2221 view->parent->parent != view->parent) {
2222 memset(display, 0, sizeof(display));
2224 display[current_view] = view->parent;
2225 view->parent = view;
2235 /* An unknown key will show most commonly used commands. */
2236 report("Unknown key, press 'h' for help");
2249 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2251 char *text = line->data;
2252 enum line_type type = line->type;
2253 int textlen = strlen(text);
2256 wmove(view->win, lineno, 0);
2260 wchgat(view->win, -1, 0, type, NULL);
2263 attr = get_line_attr(type);
2264 wattrset(view->win, attr);
2266 if (opt_line_number || opt_tab_size < TABSIZE) {
2267 static char spaces[] = " ";
2268 int col_offset = 0, col = 0;
2270 if (opt_line_number) {
2271 unsigned long real_lineno = view->offset + lineno + 1;
2273 if (real_lineno == 1 ||
2274 (real_lineno % opt_num_interval) == 0) {
2275 wprintw(view->win, "%.*d", view->digits, real_lineno);
2278 waddnstr(view->win, spaces,
2279 MIN(view->digits, STRING_SIZE(spaces)));
2281 waddstr(view->win, ": ");
2282 col_offset = view->digits + 2;
2285 while (text && col_offset + col < view->width) {
2286 int cols_max = view->width - col_offset - col;
2290 if (*text == '\t') {
2292 assert(sizeof(spaces) > TABSIZE);
2294 cols = opt_tab_size - (col % opt_tab_size);
2297 text = strchr(text, '\t');
2298 cols = line ? text - pos : strlen(pos);
2301 waddnstr(view->win, pos, MIN(cols, cols_max));
2306 int col = 0, pos = 0;
2308 for (; pos < textlen && col < view->width; pos++, col++)
2309 if (text[pos] == '\t')
2310 col += TABSIZE - (col % TABSIZE) - 1;
2312 waddnstr(view->win, text, pos);
2319 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2321 char refbuf[SIZEOF_STR];
2325 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2328 pipe = popen(refbuf, "r");
2332 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2333 ref = chomp_string(ref);
2339 /* This is the only fatal call, since it can "corrupt" the buffer. */
2340 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2347 add_pager_refs(struct view *view, struct line *line)
2349 char buf[SIZEOF_STR];
2350 char *commit_id = line->data + STRING_SIZE("commit ");
2352 size_t bufpos = 0, refpos = 0;
2353 const char *sep = "Refs: ";
2354 bool is_tag = FALSE;
2356 assert(line->type == LINE_COMMIT);
2358 refs = get_refs(commit_id);
2360 if (view == VIEW(REQ_VIEW_DIFF))
2361 goto try_add_describe_ref;
2366 struct ref *ref = refs[refpos];
2367 char *fmt = ref->tag ? "%s[%s]" :
2368 ref->remote ? "%s<%s>" : "%s%s";
2370 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2375 } while (refs[refpos++]->next);
2377 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2378 try_add_describe_ref:
2379 /* Add <tag>-g<commit_id> "fake" reference. */
2380 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2387 if (!realloc_lines(view, view->line_size + 1))
2390 line = &view->line[view->lines];
2391 line->data = strdup(buf);
2395 line->type = LINE_PP_REFS;
2400 pager_read(struct view *view, char *data)
2402 struct line *line = &view->line[view->lines];
2407 line->data = strdup(data);
2411 line->type = get_line_type(line->data);
2414 if (line->type == LINE_COMMIT &&
2415 (view == VIEW(REQ_VIEW_DIFF) ||
2416 view == VIEW(REQ_VIEW_LOG)))
2417 add_pager_refs(view, line);
2423 pager_enter(struct view *view, struct line *line)
2427 if (line->type == LINE_COMMIT &&
2428 (view == VIEW(REQ_VIEW_LOG) ||
2429 view == VIEW(REQ_VIEW_PAGER))) {
2430 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2434 /* Always scroll the view even if it was split. That way
2435 * you can use Enter to scroll through the log view and
2436 * split open each commit diff. */
2437 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2439 /* FIXME: A minor workaround. Scrolling the view will call report("")
2440 * but if we are scrolling a non-current view this won't properly
2441 * update the view title. */
2443 update_view_title(view);
2449 pager_grep(struct view *view, struct line *line)
2452 char *text = line->data;
2457 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2464 pager_select(struct view *view, struct line *line)
2466 if (line->type == LINE_COMMIT) {
2467 char *text = line->data;
2469 string_copy(view->ref, text + STRING_SIZE("commit "));
2470 string_copy(ref_commit, view->ref);
2474 static struct view_ops pager_ops = {
2488 /* Parse output from git-ls-tree(1):
2490 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2491 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2492 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2493 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2496 #define SIZEOF_TREE_ATTR \
2497 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2499 #define TREE_UP_FORMAT "040000 tree %s\t.."
2502 tree_compare_entry(enum line_type type1, char *name1,
2503 enum line_type type2, char *name2)
2505 if (type1 != type2) {
2506 if (type1 == LINE_TREE_DIR)
2511 return strcmp(name1, name2);
2515 tree_read(struct view *view, char *text)
2517 size_t textlen = text ? strlen(text) : 0;
2518 char buf[SIZEOF_STR];
2520 enum line_type type;
2521 bool first_read = view->lines == 0;
2523 if (textlen <= SIZEOF_TREE_ATTR)
2526 type = text[STRING_SIZE("100644 ")] == 't'
2527 ? LINE_TREE_DIR : LINE_TREE_FILE;
2530 /* Add path info line */
2531 if (string_format(buf, "Directory path /%s", opt_path) &&
2532 realloc_lines(view, view->line_size + 1) &&
2533 pager_read(view, buf))
2534 view->line[view->lines - 1].type = LINE_DEFAULT;
2538 /* Insert "link" to parent directory. */
2540 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2541 realloc_lines(view, view->line_size + 1) &&
2542 pager_read(view, buf))
2543 view->line[view->lines - 1].type = LINE_TREE_DIR;
2548 /* Strip the path part ... */
2550 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2551 size_t striplen = strlen(opt_path);
2552 char *path = text + SIZEOF_TREE_ATTR;
2554 if (pathlen > striplen)
2555 memmove(path, path + striplen,
2556 pathlen - striplen + 1);
2559 /* Skip "Directory ..." and ".." line. */
2560 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2561 struct line *line = &view->line[pos];
2562 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2563 char *path2 = text + SIZEOF_TREE_ATTR;
2564 int cmp = tree_compare_entry(line->type, path1, type, path2);
2569 text = strdup(text);
2573 if (view->lines > pos)
2574 memmove(&view->line[pos + 1], &view->line[pos],
2575 (view->lines - pos) * sizeof(*line));
2577 line = &view->line[pos];
2584 if (!pager_read(view, text))
2587 /* Move the current line to the first tree entry. */
2591 view->line[view->lines - 1].type = type;
2596 tree_enter(struct view *view, struct line *line)
2598 enum open_flags flags;
2599 enum request request;
2601 switch (line->type) {
2603 /* Depending on whether it is a subdir or parent (updir?) link
2604 * mangle the path buffer. */
2605 if (line == &view->line[1] && *opt_path) {
2606 size_t path_len = strlen(opt_path);
2607 char *dirsep = opt_path + path_len - 1;
2609 while (dirsep > opt_path && dirsep[-1] != '/')
2615 size_t pathlen = strlen(opt_path);
2616 size_t origlen = pathlen;
2617 char *data = line->data;
2618 char *basename = data + SIZEOF_TREE_ATTR;
2620 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2621 opt_path[origlen] = 0;
2626 /* Trees and subtrees share the same ID, so they are not not
2627 * unique like blobs. */
2628 flags = OPEN_RELOAD;
2629 request = REQ_VIEW_TREE;
2632 case LINE_TREE_FILE:
2633 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2634 request = REQ_VIEW_BLOB;
2641 open_view(view, request, flags);
2647 tree_select(struct view *view, struct line *line)
2649 char *text = line->data;
2651 text += STRING_SIZE("100644 blob ");
2653 if (line->type == LINE_TREE_FILE) {
2654 string_ncopy(ref_blob, text, 40);
2655 /* Also update the blob view's ref, since all there must always
2657 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2659 } else if (line->type != LINE_TREE_DIR) {
2663 string_ncopy(view->ref, text, 40);
2666 static struct view_ops tree_ops = {
2676 blob_read(struct view *view, char *line)
2678 bool state = pager_read(view, line);
2681 view->line[view->lines - 1].type = LINE_DEFAULT;
2686 static struct view_ops blob_ops = {
2701 char id[SIZEOF_REV]; /* SHA1 ID. */
2702 char title[128]; /* First line of the commit message. */
2703 char author[75]; /* Author of the commit. */
2704 struct tm time; /* Date from the author ident. */
2705 struct ref **refs; /* Repository references. */
2706 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2707 size_t graph_size; /* The width of the graph array. */
2710 /* Size of rev graph with no "padding" columns */
2711 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2714 struct rev_graph *prev, *next, *parents;
2715 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2717 struct commit *commit;
2721 /* Parents of the commit being visualized. */
2722 static struct rev_graph graph_parents[4];
2724 /* The current stack of revisions on the graph. */
2725 static struct rev_graph graph_stacks[4] = {
2726 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
2727 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2728 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
2729 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
2733 graph_parent_is_merge(struct rev_graph *graph)
2735 return graph->parents->size > 1;
2739 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
2741 struct commit *commit = graph->commit;
2743 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
2744 commit->graph[commit->graph_size++] = symbol;
2748 done_rev_graph(struct rev_graph *graph)
2750 if (graph_parent_is_merge(graph) &&
2751 graph->pos < graph->size - 1 &&
2752 graph->next->size == graph->size + graph->parents->size - 1) {
2753 size_t i = graph->pos + graph->parents->size - 1;
2755 graph->commit->graph_size = i * 2;
2756 while (i < graph->next->size - 1) {
2757 append_to_rev_graph(graph, ' ');
2758 append_to_rev_graph(graph, '\\');
2763 graph->size = graph->pos = 0;
2764 graph->commit = NULL;
2765 memset(graph->parents, 0, sizeof(*graph->parents));
2769 push_rev_graph(struct rev_graph *graph, char *parent)
2773 /* "Collapse" duplicate parents lines.
2775 * FIXME: This needs to also update update the drawn graph but
2776 * for now it just serves as a method for pruning graph lines. */
2777 for (i = 0; i < graph->size; i++)
2778 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
2781 if (graph->size < SIZEOF_REVITEMS) {
2782 string_ncopy(graph->rev[graph->size++], parent, SIZEOF_REV);
2787 get_rev_graph_symbol(struct rev_graph *graph)
2791 if (graph->parents->size == 0)
2792 symbol = REVGRAPH_INIT;
2793 else if (graph_parent_is_merge(graph))
2794 symbol = REVGRAPH_MERGE;
2795 else if (graph->pos >= graph->size)
2796 symbol = REVGRAPH_BRANCH;
2798 symbol = REVGRAPH_COMMIT;
2804 draw_rev_graph(struct rev_graph *graph)
2807 chtype separator, line;
2809 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
2810 static struct rev_filler fillers[] = {
2811 { ' ', REVGRAPH_LINE },
2816 chtype symbol = get_rev_graph_symbol(graph);
2817 struct rev_filler *filler;
2820 filler = &fillers[DEFAULT];
2822 for (i = 0; i < graph->pos; i++) {
2823 append_to_rev_graph(graph, filler->line);
2824 if (graph_parent_is_merge(graph->prev) &&
2825 graph->prev->pos == i)
2826 filler = &fillers[RSHARP];
2828 append_to_rev_graph(graph, filler->separator);
2831 /* Place the symbol for this revision. */
2832 append_to_rev_graph(graph, symbol);
2834 if (graph->prev->size > graph->size)
2835 filler = &fillers[RDIAG];
2837 filler = &fillers[DEFAULT];
2841 for (; i < graph->size; i++) {
2842 append_to_rev_graph(graph, filler->separator);
2843 append_to_rev_graph(graph, filler->line);
2844 if (graph_parent_is_merge(graph->prev) &&
2845 i < graph->prev->pos + graph->parents->size)
2846 filler = &fillers[RSHARP];
2847 if (graph->prev->size > graph->size)
2848 filler = &fillers[LDIAG];
2851 if (graph->prev->size > graph->size) {
2852 append_to_rev_graph(graph, filler->separator);
2853 if (filler->line != ' ')
2854 append_to_rev_graph(graph, filler->line);
2858 /* Prepare the next rev graph */
2860 prepare_rev_graph(struct rev_graph *graph)
2864 /* First, traverse all lines of revisions up to the active one. */
2865 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2866 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2869 push_rev_graph(graph->next, graph->rev[graph->pos]);
2872 /* Interleave the new revision parent(s). */
2873 for (i = 0; i < graph->parents->size; i++)
2874 push_rev_graph(graph->next, graph->parents->rev[i]);
2876 /* Lastly, put any remaining revisions. */
2877 for (i = graph->pos + 1; i < graph->size; i++)
2878 push_rev_graph(graph->next, graph->rev[i]);
2882 update_rev_graph(struct rev_graph *graph)
2884 /* If this is the finalizing update ... */
2886 prepare_rev_graph(graph);
2888 /* Graph visualization needs a one rev look-ahead,
2889 * so the first update doesn't visualize anything. */
2890 if (!graph->prev->commit)
2893 draw_rev_graph(graph->prev);
2894 done_rev_graph(graph->prev->prev);
2903 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2905 char buf[DATE_COLS + 1];
2906 struct commit *commit = line->data;
2907 enum line_type type;
2913 if (!*commit->author)
2916 wmove(view->win, lineno, col);
2920 wattrset(view->win, get_line_attr(type));
2921 wchgat(view->win, -1, 0, type, NULL);
2924 type = LINE_MAIN_COMMIT;
2925 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2928 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2929 waddnstr(view->win, buf, timelen);
2930 waddstr(view->win, " ");
2933 wmove(view->win, lineno, col);
2934 if (type != LINE_CURSOR)
2935 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2938 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2940 authorlen = strlen(commit->author);
2941 if (authorlen > AUTHOR_COLS - 2) {
2942 authorlen = AUTHOR_COLS - 2;
2948 waddnstr(view->win, commit->author, authorlen);
2949 if (type != LINE_CURSOR)
2950 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2951 waddch(view->win, '~');
2953 waddstr(view->win, commit->author);
2957 if (type != LINE_CURSOR)
2958 wattrset(view->win, A_NORMAL);
2960 if (opt_rev_graph && commit->graph_size) {
2963 wmove(view->win, lineno, col);
2964 /* Using waddch() instead of waddnstr() ensures that
2965 * they'll be rendered correctly for the cursor line. */
2966 for (i = 0; i < commit->graph_size; i++)
2967 waddch(view->win, commit->graph[i]);
2969 waddch(view->win, ' ');
2970 col += commit->graph_size + 1;
2973 wmove(view->win, lineno, col);
2979 if (type == LINE_CURSOR)
2981 else if (commit->refs[i]->tag)
2982 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2983 else if (commit->refs[i]->remote)
2984 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
2986 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2987 waddstr(view->win, "[");
2988 waddstr(view->win, commit->refs[i]->name);
2989 waddstr(view->win, "]");
2990 if (type != LINE_CURSOR)
2991 wattrset(view->win, A_NORMAL);
2992 waddstr(view->win, " ");
2993 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2994 } while (commit->refs[i++]->next);
2997 if (type != LINE_CURSOR)
2998 wattrset(view->win, get_line_attr(type));
3001 int titlelen = strlen(commit->title);
3003 if (col + titlelen > view->width)
3004 titlelen = view->width - col;
3006 waddnstr(view->win, commit->title, titlelen);
3012 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3014 main_read(struct view *view, char *line)
3016 static struct rev_graph *graph = graph_stacks;
3017 enum line_type type;
3018 struct commit *commit = view->lines
3019 ? view->line[view->lines - 1].data : NULL;
3022 update_rev_graph(graph);
3026 type = get_line_type(line);
3030 commit = calloc(1, sizeof(struct commit));
3034 line += STRING_SIZE("commit ");
3036 view->line[view->lines++].data = commit;
3037 string_copy(commit->id, line);
3038 commit->refs = get_refs(commit->id);
3039 graph->commit = commit;
3044 line += STRING_SIZE("parent ");
3045 push_rev_graph(graph->parents, line);
3051 /* Parse author lines where the name may be empty:
3052 * author <email@address.tld> 1138474660 +0100
3054 char *ident = line + STRING_SIZE("author ");
3055 char *nameend = strchr(ident, '<');
3056 char *emailend = strchr(ident, '>');
3058 if (!commit || !nameend || !emailend)
3061 update_rev_graph(graph);
3062 graph = graph->next;
3064 *nameend = *emailend = 0;
3065 ident = chomp_string(ident);
3067 ident = chomp_string(nameend + 1);
3072 string_copy(commit->author, ident);
3074 /* Parse epoch and timezone */
3075 if (emailend[1] == ' ') {
3076 char *secs = emailend + 2;
3077 char *zone = strchr(secs, ' ');
3078 time_t time = (time_t) atol(secs);
3080 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3084 tz = ('0' - zone[1]) * 60 * 60 * 10;
3085 tz += ('0' - zone[2]) * 60 * 60;
3086 tz += ('0' - zone[3]) * 60;
3087 tz += ('0' - zone[4]) * 60;
3095 gmtime_r(&time, &commit->time);
3103 /* Fill in the commit title if it has not already been set. */
3104 if (commit->title[0])
3107 /* Require titles to start with a non-space character at the
3108 * offset used by git log. */
3109 if (strncmp(line, " ", 4))
3112 /* Well, if the title starts with a whitespace character,
3113 * try to be forgiving. Otherwise we end up with no title. */
3114 while (isspace(*line))
3118 /* FIXME: More graceful handling of titles; append "..." to
3119 * shortened titles, etc. */
3121 string_copy(commit->title, line);
3128 main_enter(struct view *view, struct line *line)
3130 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3132 open_view(view, REQ_VIEW_DIFF, flags);
3137 main_grep(struct view *view, struct line *line)
3139 struct commit *commit = line->data;
3140 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3141 char buf[DATE_COLS + 1];
3144 for (state = S_TITLE; state < S_END; state++) {
3148 case S_TITLE: text = commit->title; break;
3149 case S_AUTHOR: text = commit->author; break;
3151 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3160 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3168 main_select(struct view *view, struct line *line)
3170 struct commit *commit = line->data;
3172 string_copy(view->ref, commit->id);
3173 string_copy(ref_commit, view->ref);
3176 static struct view_ops main_ops = {
3187 * Unicode / UTF-8 handling
3189 * NOTE: Much of the following code for dealing with unicode is derived from
3190 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3191 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3194 /* I've (over)annotated a lot of code snippets because I am not entirely
3195 * confident that the approach taken by this small UTF-8 interface is correct.
3199 unicode_width(unsigned long c)
3202 (c <= 0x115f /* Hangul Jamo */
3205 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3207 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3208 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3209 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3210 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3211 || (c >= 0xffe0 && c <= 0xffe6)
3212 || (c >= 0x20000 && c <= 0x2fffd)
3213 || (c >= 0x30000 && c <= 0x3fffd)))
3219 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3220 * Illegal bytes are set one. */
3221 static const unsigned char utf8_bytes[256] = {
3222 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,
3223 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,
3224 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,
3225 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,
3226 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,
3227 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,
3228 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,
3229 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,
3232 /* Decode UTF-8 multi-byte representation into a unicode character. */
3233 static inline unsigned long
3234 utf8_to_unicode(const char *string, size_t length)
3236 unsigned long unicode;
3240 unicode = string[0];
3243 unicode = (string[0] & 0x1f) << 6;
3244 unicode += (string[1] & 0x3f);
3247 unicode = (string[0] & 0x0f) << 12;
3248 unicode += ((string[1] & 0x3f) << 6);
3249 unicode += (string[2] & 0x3f);
3252 unicode = (string[0] & 0x0f) << 18;
3253 unicode += ((string[1] & 0x3f) << 12);
3254 unicode += ((string[2] & 0x3f) << 6);
3255 unicode += (string[3] & 0x3f);
3258 unicode = (string[0] & 0x0f) << 24;
3259 unicode += ((string[1] & 0x3f) << 18);
3260 unicode += ((string[2] & 0x3f) << 12);
3261 unicode += ((string[3] & 0x3f) << 6);
3262 unicode += (string[4] & 0x3f);
3265 unicode = (string[0] & 0x01) << 30;
3266 unicode += ((string[1] & 0x3f) << 24);
3267 unicode += ((string[2] & 0x3f) << 18);
3268 unicode += ((string[3] & 0x3f) << 12);
3269 unicode += ((string[4] & 0x3f) << 6);
3270 unicode += (string[5] & 0x3f);
3273 die("Invalid unicode length");
3276 /* Invalid characters could return the special 0xfffd value but NUL
3277 * should be just as good. */
3278 return unicode > 0xffff ? 0 : unicode;
3281 /* Calculates how much of string can be shown within the given maximum width
3282 * and sets trimmed parameter to non-zero value if all of string could not be
3285 * Additionally, adds to coloffset how many many columns to move to align with
3286 * the expected position. Takes into account how multi-byte and double-width
3287 * characters will effect the cursor position.
3289 * Returns the number of bytes to output from string to satisfy max_width. */
3291 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3293 const char *start = string;
3294 const char *end = strchr(string, '\0');
3300 while (string < end) {
3301 int c = *(unsigned char *) string;
3302 unsigned char bytes = utf8_bytes[c];
3304 unsigned long unicode;
3306 if (string + bytes > end)
3309 /* Change representation to figure out whether
3310 * it is a single- or double-width character. */
3312 unicode = utf8_to_unicode(string, bytes);
3313 /* FIXME: Graceful handling of invalid unicode character. */
3317 ucwidth = unicode_width(unicode);
3319 if (width > max_width) {
3324 /* The column offset collects the differences between the
3325 * number of bytes encoding a character and the number of
3326 * columns will be used for rendering said character.
3328 * So if some character A is encoded in 2 bytes, but will be
3329 * represented on the screen using only 1 byte this will and up
3330 * adding 1 to the multi-byte column offset.
3332 * Assumes that no double-width character can be encoding in
3333 * less than two bytes. */
3334 if (bytes > ucwidth)
3335 mbwidth += bytes - ucwidth;
3340 *coloffset += mbwidth;
3342 return string - start;
3350 /* Whether or not the curses interface has been initialized. */
3351 static bool cursed = FALSE;
3353 /* The status window is used for polling keystrokes. */
3354 static WINDOW *status_win;
3356 static bool status_empty = TRUE;
3358 /* Update status and title window. */
3360 report(const char *msg, ...)
3362 struct view *view = display[current_view];
3367 if (!status_empty || *msg) {
3370 va_start(args, msg);
3372 wmove(status_win, 0, 0);
3374 vwprintw(status_win, msg, args);
3375 status_empty = FALSE;
3377 status_empty = TRUE;
3379 wclrtoeol(status_win);
3380 wrefresh(status_win);
3385 update_view_title(view);
3386 update_display_cursor(view);
3389 /* Controls when nodelay should be in effect when polling user input. */
3391 set_nonblocking_input(bool loading)
3393 static unsigned int loading_views;
3395 if ((loading == FALSE && loading_views-- == 1) ||
3396 (loading == TRUE && loading_views++ == 0))
3397 nodelay(status_win, loading);
3405 /* Initialize the curses library */
3406 if (isatty(STDIN_FILENO)) {
3407 cursed = !!initscr();
3409 /* Leave stdin and stdout alone when acting as a pager. */
3410 FILE *io = fopen("/dev/tty", "r+");
3413 die("Failed to open /dev/tty");
3414 cursed = !!newterm(NULL, io, io);
3418 die("Failed to initialize curses");
3420 nonl(); /* Tell curses not to do NL->CR/NL on output */
3421 cbreak(); /* Take input chars one at a time, no wait for \n */
3422 noecho(); /* Don't echo input */
3423 leaveok(stdscr, TRUE);
3428 getmaxyx(stdscr, y, x);
3429 status_win = newwin(1, 0, y - 1, 0);
3431 die("Failed to create status window");
3433 /* Enable keyboard mapping */
3434 keypad(status_win, TRUE);
3435 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3439 read_prompt(const char *prompt)
3441 enum { READING, STOP, CANCEL } status = READING;
3442 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3445 while (status == READING) {
3451 foreach_view (view, i)
3456 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
3457 wclrtoeol(status_win);
3459 /* Refresh, accept single keystroke of input */
3460 key = wgetch(status_win);
3465 status = pos ? STOP : CANCEL;
3483 if (pos >= sizeof(buf)) {
3484 report("Input string too long");
3489 buf[pos++] = (char) key;
3493 /* Clear the status window */
3494 status_empty = FALSE;
3497 if (status == CANCEL)
3506 * Repository references
3509 static struct ref *refs;
3510 static size_t refs_size;
3512 /* Id <-> ref store */
3513 static struct ref ***id_refs;
3514 static size_t id_refs_size;
3516 static struct ref **
3519 struct ref ***tmp_id_refs;
3520 struct ref **ref_list = NULL;
3521 size_t ref_list_size = 0;
3524 for (i = 0; i < id_refs_size; i++)
3525 if (!strcmp(id, id_refs[i][0]->id))
3528 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3532 id_refs = tmp_id_refs;
3534 for (i = 0; i < refs_size; i++) {
3537 if (strcmp(id, refs[i].id))
3540 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3548 if (ref_list_size > 0)
3549 ref_list[ref_list_size - 1]->next = 1;
3550 ref_list[ref_list_size] = &refs[i];
3552 /* XXX: The properties of the commit chains ensures that we can
3553 * safely modify the shared ref. The repo references will
3554 * always be similar for the same id. */
3555 ref_list[ref_list_size]->next = 0;
3560 id_refs[id_refs_size++] = ref_list;
3566 read_ref(char *id, int idlen, char *name, int namelen)
3570 bool remote = FALSE;
3572 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3573 /* Commits referenced by tags has "^{}" appended. */
3574 if (name[namelen - 1] != '}')
3577 while (namelen > 0 && name[namelen] != '^')
3581 namelen -= STRING_SIZE("refs/tags/");
3582 name += STRING_SIZE("refs/tags/");
3584 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
3586 namelen -= STRING_SIZE("refs/remotes/");
3587 name += STRING_SIZE("refs/remotes/");
3589 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3590 namelen -= STRING_SIZE("refs/heads/");
3591 name += STRING_SIZE("refs/heads/");
3593 } else if (!strcmp(name, "HEAD")) {
3597 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3601 ref = &refs[refs_size++];
3602 ref->name = malloc(namelen + 1);
3606 strncpy(ref->name, name, namelen);
3607 ref->name[namelen] = 0;
3609 ref->remote = remote;
3610 string_copy(ref->id, id);
3618 const char *cmd_env = getenv("TIG_LS_REMOTE");
3619 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3621 return read_properties(popen(cmd, "r"), "\t", read_ref);
3625 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3627 if (!strcmp(name, "i18n.commitencoding"))
3628 string_copy(opt_encoding, value);
3634 load_repo_config(void)
3636 return read_properties(popen("git repo-config --list", "r"),
3637 "=", read_repo_config_option);
3641 read_properties(FILE *pipe, const char *separators,
3642 int (*read_property)(char *, int, char *, int))
3644 char buffer[BUFSIZ];
3651 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3656 name = chomp_string(name);
3657 namelen = strcspn(name, separators);
3659 if (name[namelen]) {
3661 value = chomp_string(name + namelen + 1);
3662 valuelen = strlen(value);
3669 state = read_property(name, namelen, value, valuelen);
3672 if (state != ERR && ferror(pipe))
3685 static void __NORETURN
3688 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3694 static void __NORETURN
3695 die(const char *err, ...)
3701 va_start(args, err);
3702 fputs("tig: ", stderr);
3703 vfprintf(stderr, err, args);
3704 fputs("\n", stderr);
3711 main(int argc, char *argv[])
3714 enum request request;
3717 signal(SIGINT, quit);
3719 if (setlocale(LC_ALL, "")) {
3720 string_copy(opt_codeset, nl_langinfo(CODESET));
3723 if (load_options() == ERR)
3724 die("Failed to load user config.");
3726 /* Load the repo config file so options can be overwritten from
3727 * the command line. */
3728 if (load_repo_config() == ERR)
3729 die("Failed to load repo config.");
3731 if (!parse_options(argc, argv))
3734 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3735 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3736 if (opt_iconv == ICONV_NONE)
3737 die("Failed to initialize character set conversion");
3740 if (load_refs() == ERR)
3741 die("Failed to load refs.");
3743 /* Require a git repository unless when running in pager mode. */
3744 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3745 die("Not a git repository");
3747 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3748 view->cmd_env = getenv(view->cmd_env);
3750 request = opt_request;
3754 while (view_driver(display[current_view], request)) {
3758 foreach_view (view, i)
3761 /* Refresh, accept single keystroke of input */
3762 key = wgetch(status_win);
3764 /* wgetch() with nodelay() enabled returns ERR when there's no
3771 request = get_keybinding(display[current_view]->keymap, key);
3773 /* Some low-level request handling. This keeps access to
3774 * status_win restricted. */
3778 char *cmd = read_prompt(":");
3780 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3781 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3782 opt_request = REQ_VIEW_DIFF;
3784 opt_request = REQ_VIEW_PAGER;
3793 case REQ_SEARCH_BACK:
3795 const char *prompt = request == REQ_SEARCH
3797 char *search = read_prompt(prompt);
3800 string_copy(opt_search, search);
3805 case REQ_SCREEN_RESIZE:
3809 getmaxyx(stdscr, height, width);
3811 /* Resize the status view and let the view driver take
3812 * care of resizing the displayed views. */
3813 wresize(status_win, 1, width);
3814 mvwin(status_win, height - 1, 0);
3815 wrefresh(status_win);