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 /* Size of rev graph with no "padding" columns */
75 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
77 /* This color name can be used to refer to the default term colors. */
78 #define COLOR_DEFAULT (-1)
80 #define ICONV_NONE ((iconv_t) -1)
82 /* The format and size of the date column in the main view. */
83 #define DATE_FORMAT "%Y-%m-%d %H:%M"
84 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
86 #define AUTHOR_COLS 20
88 /* The default interval between line numbers. */
89 #define NUMBER_INTERVAL 1
93 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
95 #define TIG_LS_REMOTE \
96 "git ls-remote . 2>/dev/null"
98 #define TIG_DIFF_CMD \
99 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
101 #define TIG_LOG_CMD \
102 "git log --cc --stat -n100 %s 2>/dev/null"
104 #define TIG_MAIN_CMD \
105 "git log --topo-order --pretty=raw %s 2>/dev/null"
107 #define TIG_TREE_CMD \
110 #define TIG_BLOB_CMD \
111 "git cat-file blob %s"
113 /* XXX: Needs to be defined to the empty string. */
114 #define TIG_HELP_CMD ""
115 #define TIG_PAGER_CMD ""
117 /* Some ascii-shorthands fitted into the ncurses namespace. */
119 #define KEY_RETURN '\r'
124 char *name; /* Ref name; tag or head names are shortened. */
125 char id[SIZEOF_REV]; /* Commit SHA1 ID */
126 unsigned int tag:1; /* Is it a tag? */
127 unsigned int next:1; /* For ref lists: are there more refs? */
130 static struct ref **get_refs(char *id);
139 set_from_int_map(struct int_map *map, size_t map_size,
140 int *value, const char *name, int namelen)
145 for (i = 0; i < map_size; i++)
146 if (namelen == map[i].namelen &&
147 !strncasecmp(name, map[i].name, namelen)) {
148 *value = map[i].value;
161 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
163 if (srclen > dstlen - 1)
166 strncpy(dst, src, srclen);
170 /* Shorthands for safely copying into a fixed buffer. */
172 #define string_copy(dst, src) \
173 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
175 #define string_ncopy(dst, src, srclen) \
176 string_ncopy_do(dst, sizeof(dst), src, srclen)
179 chomp_string(char *name)
183 while (isspace(*name))
186 namelen = strlen(name) - 1;
187 while (namelen > 0 && isspace(name[namelen]))
194 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
197 size_t pos = bufpos ? *bufpos : 0;
200 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
206 return pos >= bufsize ? FALSE : TRUE;
209 #define string_format(buf, fmt, args...) \
210 string_nformat(buf, sizeof(buf), NULL, fmt, args)
212 #define string_format_from(buf, from, fmt, args...) \
213 string_nformat(buf, sizeof(buf), from, fmt, args)
216 string_enum_compare(const char *str1, const char *str2, int len)
220 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
222 /* Diff-Header == DIFF_HEADER */
223 for (i = 0; i < len; i++) {
224 if (toupper(str1[i]) == toupper(str2[i]))
227 if (string_enum_sep(str1[i]) &&
228 string_enum_sep(str2[i]))
231 return str1[i] - str2[i];
239 * NOTE: The following is a slightly modified copy of the git project's shell
240 * quoting routines found in the quote.c file.
242 * Help to copy the thing properly quoted for the shell safety. any single
243 * quote is replaced with '\'', any exclamation point is replaced with '\!',
244 * and the whole thing is enclosed in a
247 * original sq_quote result
248 * name ==> name ==> 'name'
249 * a b ==> a b ==> 'a b'
250 * a'b ==> a'\''b ==> 'a'\''b'
251 * a!b ==> a'\!'b ==> 'a'\!'b'
255 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
259 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
262 while ((c = *src++)) {
263 if (c == '\'' || c == '!') {
283 /* XXX: Keep the view request first and in sync with views[]. */ \
284 REQ_GROUP("View switching") \
285 REQ_(VIEW_MAIN, "Show main view"), \
286 REQ_(VIEW_DIFF, "Show diff view"), \
287 REQ_(VIEW_LOG, "Show log view"), \
288 REQ_(VIEW_TREE, "Show tree view"), \
289 REQ_(VIEW_BLOB, "Show blob view"), \
290 REQ_(VIEW_HELP, "Show help page"), \
291 REQ_(VIEW_PAGER, "Show pager view"), \
293 REQ_GROUP("View manipulation") \
294 REQ_(ENTER, "Enter current line and scroll"), \
295 REQ_(NEXT, "Move to next"), \
296 REQ_(PREVIOUS, "Move to previous"), \
297 REQ_(VIEW_NEXT, "Move focus to next view"), \
298 REQ_(VIEW_CLOSE, "Close the current view"), \
299 REQ_(QUIT, "Close all views and quit"), \
301 REQ_GROUP("Cursor navigation") \
302 REQ_(MOVE_UP, "Move cursor one line up"), \
303 REQ_(MOVE_DOWN, "Move cursor one line down"), \
304 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
305 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
306 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
307 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
309 REQ_GROUP("Scrolling") \
310 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
311 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
312 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
313 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
315 REQ_GROUP("Searching") \
316 REQ_(SEARCH, "Search the view"), \
317 REQ_(SEARCH_BACK, "Search backwards in the view"), \
318 REQ_(FIND_NEXT, "Find next search match"), \
319 REQ_(FIND_PREV, "Find previous search match"), \
322 REQ_(NONE, "Do nothing"), \
323 REQ_(PROMPT, "Bring up the prompt"), \
324 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
325 REQ_(SCREEN_RESIZE, "Resize the screen"), \
326 REQ_(SHOW_VERSION, "Show version information"), \
327 REQ_(STOP_LOADING, "Stop all loading views"), \
328 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
329 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
332 /* User action requests. */
334 #define REQ_GROUP(help)
335 #define REQ_(req, help) REQ_##req
337 /* Offset all requests to avoid conflicts with ncurses getch values. */
338 REQ_OFFSET = KEY_MAX + 1,
346 struct request_info {
347 enum request request;
353 static struct request_info req_info[] = {
354 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
355 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
362 get_request(const char *name)
364 int namelen = strlen(name);
367 for (i = 0; i < ARRAY_SIZE(req_info); i++)
368 if (req_info[i].namelen == namelen &&
369 !string_enum_compare(req_info[i].name, name, namelen))
370 return req_info[i].request;
380 static const char usage[] =
381 VERSION " (" __DATE__ ")\n"
383 "Usage: tig [options]\n"
384 " or: tig [options] [--] [git log options]\n"
385 " or: tig [options] log [git log options]\n"
386 " or: tig [options] diff [git diff options]\n"
387 " or: tig [options] show [git show options]\n"
388 " or: tig [options] < [git command output]\n"
391 " -l Start up in log view\n"
392 " -d Start up in diff view\n"
393 " -n[I], --line-number[=I] Show line numbers with given interval\n"
394 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
395 " -- Mark end of tig options\n"
396 " -v, --version Show version and exit\n"
397 " -h, --help Show help message and exit\n";
399 /* Option and state variables. */
400 static bool opt_line_number = FALSE;
401 static bool opt_rev_graph = TRUE;
402 static int opt_num_interval = NUMBER_INTERVAL;
403 static int opt_tab_size = TABSIZE;
404 static enum request opt_request = REQ_VIEW_MAIN;
405 static char opt_cmd[SIZEOF_STR] = "";
406 static char opt_path[SIZEOF_STR] = "";
407 static FILE *opt_pipe = NULL;
408 static char opt_encoding[20] = "UTF-8";
409 static bool opt_utf8 = TRUE;
410 static char opt_codeset[20] = "UTF-8";
411 static iconv_t opt_iconv = ICONV_NONE;
412 static char opt_search[SIZEOF_STR] = "";
420 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
430 int namelen = strlen(name);
434 if (strncmp(opt, name, namelen))
437 if (opt[namelen] == '=')
438 value = opt + namelen + 1;
441 if (!short_name || opt[1] != short_name)
446 va_start(args, type);
447 if (type == OPT_INT) {
448 number = va_arg(args, int *);
450 *number = atoi(value);
457 /* Returns the index of log or diff command or -1 to exit. */
459 parse_options(int argc, char *argv[])
463 for (i = 1; i < argc; i++) {
466 if (!strcmp(opt, "-l")) {
467 opt_request = REQ_VIEW_LOG;
471 if (!strcmp(opt, "-d")) {
472 opt_request = REQ_VIEW_DIFF;
476 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
477 opt_line_number = TRUE;
481 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
482 opt_tab_size = MIN(opt_tab_size, TABSIZE);
486 if (check_option(opt, 'v', "version", OPT_NONE)) {
487 printf("tig version %s\n", VERSION);
491 if (check_option(opt, 'h', "help", OPT_NONE)) {
496 if (!strcmp(opt, "--")) {
501 if (!strcmp(opt, "log") ||
502 !strcmp(opt, "diff") ||
503 !strcmp(opt, "show")) {
504 opt_request = opt[0] == 'l'
505 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
509 if (opt[0] && opt[0] != '-')
512 die("unknown option '%s'\n\n%s", opt, usage);
515 if (!isatty(STDIN_FILENO)) {
516 opt_request = REQ_VIEW_PAGER;
519 } else if (i < argc) {
522 if (opt_request == REQ_VIEW_MAIN)
523 /* XXX: This is vulnerable to the user overriding
524 * options required for the main view parser. */
525 string_copy(opt_cmd, "git log --stat --pretty=raw");
527 string_copy(opt_cmd, "git");
528 buf_size = strlen(opt_cmd);
530 while (buf_size < sizeof(opt_cmd) && i < argc) {
531 opt_cmd[buf_size++] = ' ';
532 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
535 if (buf_size >= sizeof(opt_cmd))
536 die("command too long");
538 opt_cmd[buf_size] = 0;
542 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
550 * Line-oriented content detection.
554 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
556 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
557 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
558 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
562 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
563 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
564 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
565 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
566 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
567 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
568 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
569 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
570 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
571 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
572 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
573 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
574 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
575 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
576 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
577 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
578 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
579 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
580 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
583 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
584 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
585 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
586 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
587 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
588 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
589 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
590 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
591 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
592 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
593 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
594 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
597 #define LINE(type, line, fg, bg, attr) \
604 const char *name; /* Option name. */
605 int namelen; /* Size of option name. */
606 const char *line; /* The start of line to match. */
607 int linelen; /* Size of string to match. */
608 int fg, bg, attr; /* Color and text attributes for the lines. */
611 static struct line_info line_info[] = {
612 #define LINE(type, line, fg, bg, attr) \
613 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
618 static enum line_type
619 get_line_type(char *line)
621 int linelen = strlen(line);
624 for (type = 0; type < ARRAY_SIZE(line_info); type++)
625 /* Case insensitive search matches Signed-off-by lines better. */
626 if (linelen >= line_info[type].linelen &&
627 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
634 get_line_attr(enum line_type type)
636 assert(type < ARRAY_SIZE(line_info));
637 return COLOR_PAIR(type) | line_info[type].attr;
640 static struct line_info *
641 get_line_info(char *name, int namelen)
645 for (type = 0; type < ARRAY_SIZE(line_info); type++)
646 if (namelen == line_info[type].namelen &&
647 !string_enum_compare(line_info[type].name, name, namelen))
648 return &line_info[type];
656 int default_bg = COLOR_BLACK;
657 int default_fg = COLOR_WHITE;
662 if (use_default_colors() != ERR) {
667 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
668 struct line_info *info = &line_info[type];
669 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
670 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
672 init_pair(type, fg, bg);
680 unsigned int selected:1;
682 void *data; /* User data */
692 enum request request;
693 struct keybinding *next;
696 static struct keybinding default_keybindings[] = {
698 { 'm', REQ_VIEW_MAIN },
699 { 'd', REQ_VIEW_DIFF },
700 { 'l', REQ_VIEW_LOG },
701 { 't', REQ_VIEW_TREE },
702 { 'f', REQ_VIEW_BLOB },
703 { 'p', REQ_VIEW_PAGER },
704 { 'h', REQ_VIEW_HELP },
706 /* View manipulation */
707 { 'q', REQ_VIEW_CLOSE },
708 { KEY_TAB, REQ_VIEW_NEXT },
709 { KEY_RETURN, REQ_ENTER },
710 { KEY_UP, REQ_PREVIOUS },
711 { KEY_DOWN, REQ_NEXT },
713 /* Cursor navigation */
714 { 'k', REQ_MOVE_UP },
715 { 'j', REQ_MOVE_DOWN },
716 { KEY_HOME, REQ_MOVE_FIRST_LINE },
717 { KEY_END, REQ_MOVE_LAST_LINE },
718 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
719 { ' ', REQ_MOVE_PAGE_DOWN },
720 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
721 { 'b', REQ_MOVE_PAGE_UP },
722 { '-', REQ_MOVE_PAGE_UP },
725 { KEY_IC, REQ_SCROLL_LINE_UP },
726 { KEY_DC, REQ_SCROLL_LINE_DOWN },
727 { 'w', REQ_SCROLL_PAGE_UP },
728 { 's', REQ_SCROLL_PAGE_DOWN },
732 { '?', REQ_SEARCH_BACK },
733 { 'n', REQ_FIND_NEXT },
734 { 'N', REQ_FIND_PREV },
738 { 'z', REQ_STOP_LOADING },
739 { 'v', REQ_SHOW_VERSION },
740 { 'r', REQ_SCREEN_REDRAW },
741 { '.', REQ_TOGGLE_LINENO },
742 { 'g', REQ_TOGGLE_REV_GRAPH },
745 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
748 /* Using the ncurses SIGWINCH handler. */
749 { KEY_RESIZE, REQ_SCREEN_RESIZE },
752 #define KEYMAP_INFO \
763 #define KEYMAP_(name) KEYMAP_##name
768 static struct int_map keymap_table[] = {
769 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
774 #define set_keymap(map, name) \
775 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
777 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
780 add_keybinding(enum keymap keymap, enum request request, int key)
782 struct keybinding *keybinding;
784 keybinding = calloc(1, sizeof(*keybinding));
786 die("Failed to allocate keybinding");
788 keybinding->alias = key;
789 keybinding->request = request;
790 keybinding->next = keybindings[keymap];
791 keybindings[keymap] = keybinding;
794 /* Looks for a key binding first in the given map, then in the generic map, and
795 * lastly in the default keybindings. */
797 get_keybinding(enum keymap keymap, int key)
799 struct keybinding *kbd;
802 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
803 if (kbd->alias == key)
806 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
807 if (kbd->alias == key)
810 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
811 if (default_keybindings[i].alias == key)
812 return default_keybindings[i].request;
814 return (enum request) key;
823 static struct key key_table[] = {
824 { "Enter", KEY_RETURN },
826 { "Backspace", KEY_BACKSPACE },
828 { "Escape", KEY_ESC },
829 { "Left", KEY_LEFT },
830 { "Right", KEY_RIGHT },
832 { "Down", KEY_DOWN },
833 { "Insert", KEY_IC },
834 { "Delete", KEY_DC },
836 { "Home", KEY_HOME },
838 { "PageUp", KEY_PPAGE },
839 { "PageDown", KEY_NPAGE },
849 { "F10", KEY_F(10) },
850 { "F11", KEY_F(11) },
851 { "F12", KEY_F(12) },
855 get_key_value(const char *name)
859 for (i = 0; i < ARRAY_SIZE(key_table); i++)
860 if (!strcasecmp(key_table[i].name, name))
861 return key_table[i].value;
863 if (strlen(name) == 1 && isprint(*name))
870 get_key(enum request request)
872 static char buf[BUFSIZ];
873 static char key_char[] = "'X'";
880 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
881 struct keybinding *keybinding = &default_keybindings[i];
885 if (keybinding->request != request)
888 for (key = 0; key < ARRAY_SIZE(key_table); key++)
889 if (key_table[key].value == keybinding->alias)
890 seq = key_table[key].name;
893 keybinding->alias < 127 &&
894 isprint(keybinding->alias)) {
895 key_char[1] = (char) keybinding->alias;
902 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
903 return "Too many keybindings!";
912 * User config file handling.
915 static struct int_map color_map[] = {
916 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
928 #define set_color(color, name) \
929 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
931 static struct int_map attr_map[] = {
932 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
942 #define set_attribute(attr, name) \
943 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
945 static int config_lineno;
946 static bool config_errors;
947 static char *config_msg;
949 /* Wants: object fgcolor bgcolor [attr] */
951 option_color_command(int argc, char *argv[])
953 struct line_info *info;
955 if (argc != 3 && argc != 4) {
956 config_msg = "Wrong number of arguments given to color command";
960 info = get_line_info(argv[0], strlen(argv[0]));
962 config_msg = "Unknown color name";
966 if (set_color(&info->fg, argv[1]) == ERR ||
967 set_color(&info->bg, argv[2]) == ERR) {
968 config_msg = "Unknown color";
972 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
973 config_msg = "Unknown attribute";
980 /* Wants: name = value */
982 option_set_command(int argc, char *argv[])
985 config_msg = "Wrong number of arguments given to set command";
989 if (strcmp(argv[1], "=")) {
990 config_msg = "No value assigned";
994 if (!strcmp(argv[0], "show-rev-graph")) {
995 opt_rev_graph = (!strcmp(argv[2], "1") ||
996 !strcmp(argv[2], "true") ||
997 !strcmp(argv[2], "yes"));
1001 if (!strcmp(argv[0], "line-number-interval")) {
1002 opt_num_interval = atoi(argv[2]);
1006 if (!strcmp(argv[0], "tab-size")) {
1007 opt_tab_size = atoi(argv[2]);
1011 if (!strcmp(argv[0], "commit-encoding")) {
1012 char *arg = argv[2];
1013 int delimiter = *arg;
1016 switch (delimiter) {
1019 for (arg++, i = 0; arg[i]; i++)
1020 if (arg[i] == delimiter) {
1025 string_copy(opt_encoding, arg);
1030 config_msg = "Unknown variable name";
1034 /* Wants: mode request key */
1036 option_bind_command(int argc, char *argv[])
1038 enum request request;
1043 config_msg = "Wrong number of arguments given to bind command";
1047 if (set_keymap(&keymap, argv[0]) == ERR) {
1048 config_msg = "Unknown key map";
1052 key = get_key_value(argv[1]);
1054 config_msg = "Unknown key";
1058 request = get_request(argv[2]);
1059 if (request == REQ_UNKNOWN) {
1060 config_msg = "Unknown request name";
1064 add_keybinding(keymap, request, key);
1070 set_option(char *opt, char *value)
1077 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1078 argv[argc++] = value;
1085 while (isspace(*value))
1089 if (!strcmp(opt, "color"))
1090 return option_color_command(argc, argv);
1092 if (!strcmp(opt, "set"))
1093 return option_set_command(argc, argv);
1095 if (!strcmp(opt, "bind"))
1096 return option_bind_command(argc, argv);
1098 config_msg = "Unknown option command";
1103 read_option(char *opt, int optlen, char *value, int valuelen)
1108 config_msg = "Internal error";
1110 /* Check for comment markers, since read_properties() will
1111 * only ensure opt and value are split at first " \t". */
1112 optlen = strcspn(opt, "#");
1116 if (opt[optlen] != 0) {
1117 config_msg = "No option value";
1121 /* Look for comment endings in the value. */
1122 int len = strcspn(value, "#");
1124 if (len < valuelen) {
1126 value[valuelen] = 0;
1129 status = set_option(opt, value);
1132 if (status == ERR) {
1133 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1134 config_lineno, optlen, opt, config_msg);
1135 config_errors = TRUE;
1138 /* Always keep going if errors are encountered. */
1145 char *home = getenv("HOME");
1146 char buf[SIZEOF_STR];
1150 config_errors = FALSE;
1152 if (!home || !string_format(buf, "%s/.tigrc", home))
1155 /* It's ok that the file doesn't exist. */
1156 file = fopen(buf, "r");
1160 if (read_properties(file, " \t", read_option) == ERR ||
1161 config_errors == TRUE)
1162 fprintf(stderr, "Errors while loading %s.\n", buf);
1175 /* The display array of active views and the index of the current view. */
1176 static struct view *display[2];
1177 static unsigned int current_view;
1179 #define foreach_displayed_view(view, i) \
1180 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1182 #define displayed_views() (display[1] != NULL ? 2 : 1)
1184 /* Current head and commit ID */
1185 static char ref_blob[SIZEOF_REF] = "";
1186 static char ref_commit[SIZEOF_REF] = "HEAD";
1187 static char ref_head[SIZEOF_REF] = "HEAD";
1190 const char *name; /* View name */
1191 const char *cmd_fmt; /* Default command line format */
1192 const char *cmd_env; /* Command line set via environment */
1193 const char *id; /* Points to either of ref_{head,commit,blob} */
1195 struct view_ops *ops; /* View operations */
1197 enum keymap keymap; /* What keymap does this view have */
1199 char cmd[SIZEOF_STR]; /* Command buffer */
1200 char ref[SIZEOF_REF]; /* Hovered commit reference */
1201 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1203 int height, width; /* The width and height of the main window */
1204 WINDOW *win; /* The main window */
1205 WINDOW *title; /* The title window living below the main window */
1208 unsigned long offset; /* Offset of the window top */
1209 unsigned long lineno; /* Current line number */
1212 char grep[SIZEOF_STR]; /* Search string */
1213 regex_t *regex; /* Pre-compiled regex */
1215 /* If non-NULL, points to the view that opened this view. If this view
1216 * is closed tig will switch back to the parent view. */
1217 struct view *parent;
1220 unsigned long lines; /* Total number of lines */
1221 struct line *line; /* Line index */
1222 unsigned long line_size;/* Total number of allocated lines */
1223 unsigned int digits; /* Number of digits in the lines member. */
1231 /* What type of content being displayed. Used in the title bar. */
1233 /* Draw one line; @lineno must be < view->height. */
1234 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1235 /* Read one line; updates view->line. */
1236 bool (*read)(struct view *view, char *data);
1237 /* Depending on view, change display based on current line. */
1238 bool (*enter)(struct view *view, struct line *line);
1239 /* Search for regex in a line. */
1240 bool (*grep)(struct view *view, struct line *line);
1242 void (*select)(struct view *view, struct line *line);
1245 static struct view_ops pager_ops;
1246 static struct view_ops main_ops;
1247 static struct view_ops tree_ops;
1248 static struct view_ops blob_ops;
1250 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1251 { name, cmd, #env, ref, ops, map}
1253 #define VIEW_(id, name, ops, ref) \
1254 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1257 static struct view views[] = {
1258 VIEW_(MAIN, "main", &main_ops, ref_head),
1259 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1260 VIEW_(LOG, "log", &pager_ops, ref_head),
1261 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1262 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1263 VIEW_(HELP, "help", &pager_ops, "static"),
1264 VIEW_(PAGER, "pager", &pager_ops, "static"),
1267 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1269 #define foreach_view(view, i) \
1270 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1272 #define view_is_displayed(view) \
1273 (view == display[0] || view == display[1])
1276 draw_view_line(struct view *view, unsigned int lineno)
1279 bool selected = (view->offset + lineno == view->lineno);
1281 assert(view_is_displayed(view));
1283 if (view->offset + lineno >= view->lines)
1286 line = &view->line[view->offset + lineno];
1289 line->selected = TRUE;
1290 view->ops->select(view, line);
1291 } else if (line->selected) {
1292 line->selected = FALSE;
1293 wmove(view->win, lineno, 0);
1294 wclrtoeol(view->win);
1297 return view->ops->draw(view, line, lineno, selected);
1301 redraw_view_from(struct view *view, int lineno)
1303 assert(0 <= lineno && lineno < view->height);
1305 for (; lineno < view->height; lineno++) {
1306 if (!draw_view_line(view, lineno))
1310 redrawwin(view->win);
1311 wrefresh(view->win);
1315 redraw_view(struct view *view)
1318 redraw_view_from(view, 0);
1323 update_view_title(struct view *view)
1325 assert(view_is_displayed(view));
1327 if (view == display[current_view])
1328 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1330 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1332 werase(view->title);
1333 wmove(view->title, 0, 0);
1336 wprintw(view->title, "[%s] %s", view->name, view->ref);
1338 wprintw(view->title, "[%s]", view->name);
1340 if (view->lines || view->pipe) {
1341 unsigned int view_lines = view->offset + view->height;
1342 unsigned int lines = view->lines
1343 ? MIN(view_lines, view->lines) * 100 / view->lines
1346 wprintw(view->title, " - %s %d of %d (%d%%)",
1354 time_t secs = time(NULL) - view->start_time;
1356 /* Three git seconds are a long time ... */
1358 wprintw(view->title, " %lds", secs);
1361 wmove(view->title, 0, view->width - 1);
1362 wrefresh(view->title);
1366 resize_display(void)
1369 struct view *base = display[0];
1370 struct view *view = display[1] ? display[1] : display[0];
1372 /* Setup window dimensions */
1374 getmaxyx(stdscr, base->height, base->width);
1376 /* Make room for the status window. */
1380 /* Horizontal split. */
1381 view->width = base->width;
1382 view->height = SCALE_SPLIT_VIEW(base->height);
1383 base->height -= view->height;
1385 /* Make room for the title bar. */
1389 /* Make room for the title bar. */
1394 foreach_displayed_view (view, i) {
1396 view->win = newwin(view->height, 0, offset, 0);
1398 die("Failed to create %s view", view->name);
1400 scrollok(view->win, TRUE);
1402 view->title = newwin(1, 0, offset + view->height, 0);
1404 die("Failed to create title window");
1407 wresize(view->win, view->height, view->width);
1408 mvwin(view->win, offset, 0);
1409 mvwin(view->title, offset + view->height, 0);
1412 offset += view->height + 1;
1417 redraw_display(void)
1422 foreach_displayed_view (view, i) {
1424 update_view_title(view);
1429 update_display_cursor(void)
1431 struct view *view = display[current_view];
1433 /* Move the cursor to the right-most column of the cursor line.
1435 * XXX: This could turn out to be a bit expensive, but it ensures that
1436 * the cursor does not jump around. */
1438 wmove(view->win, view->lineno - view->offset, view->width - 1);
1439 wrefresh(view->win);
1447 /* Scrolling backend */
1449 do_scroll_view(struct view *view, int lines)
1451 bool redraw_current_line = FALSE;
1453 /* The rendering expects the new offset. */
1454 view->offset += lines;
1456 assert(0 <= view->offset && view->offset < view->lines);
1459 /* Move current line into the view. */
1460 if (view->lineno < view->offset) {
1461 view->lineno = view->offset;
1462 redraw_current_line = TRUE;
1463 } else if (view->lineno >= view->offset + view->height) {
1464 view->lineno = view->offset + view->height - 1;
1465 redraw_current_line = TRUE;
1468 assert(view->offset <= view->lineno && view->lineno < view->lines);
1470 /* Redraw the whole screen if scrolling is pointless. */
1471 if (view->height < ABS(lines)) {
1475 int line = lines > 0 ? view->height - lines : 0;
1476 int end = line + ABS(lines);
1478 wscrl(view->win, lines);
1480 for (; line < end; line++) {
1481 if (!draw_view_line(view, line))
1485 if (redraw_current_line)
1486 draw_view_line(view, view->lineno - view->offset);
1489 redrawwin(view->win);
1490 wrefresh(view->win);
1494 /* Scroll frontend */
1496 scroll_view(struct view *view, enum request request)
1500 assert(view_is_displayed(view));
1503 case REQ_SCROLL_PAGE_DOWN:
1504 lines = view->height;
1505 case REQ_SCROLL_LINE_DOWN:
1506 if (view->offset + lines > view->lines)
1507 lines = view->lines - view->offset;
1509 if (lines == 0 || view->offset + view->height >= view->lines) {
1510 report("Cannot scroll beyond the last line");
1515 case REQ_SCROLL_PAGE_UP:
1516 lines = view->height;
1517 case REQ_SCROLL_LINE_UP:
1518 if (lines > view->offset)
1519 lines = view->offset;
1522 report("Cannot scroll beyond the first line");
1530 die("request %d not handled in switch", request);
1533 do_scroll_view(view, lines);
1538 move_view(struct view *view, enum request request)
1540 int scroll_steps = 0;
1544 case REQ_MOVE_FIRST_LINE:
1545 steps = -view->lineno;
1548 case REQ_MOVE_LAST_LINE:
1549 steps = view->lines - view->lineno - 1;
1552 case REQ_MOVE_PAGE_UP:
1553 steps = view->height > view->lineno
1554 ? -view->lineno : -view->height;
1557 case REQ_MOVE_PAGE_DOWN:
1558 steps = view->lineno + view->height >= view->lines
1559 ? view->lines - view->lineno - 1 : view->height;
1571 die("request %d not handled in switch", request);
1574 if (steps <= 0 && view->lineno == 0) {
1575 report("Cannot move beyond the first line");
1578 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1579 report("Cannot move beyond the last line");
1583 /* Move the current line */
1584 view->lineno += steps;
1585 assert(0 <= view->lineno && view->lineno < view->lines);
1587 /* Check whether the view needs to be scrolled */
1588 if (view->lineno < view->offset ||
1589 view->lineno >= view->offset + view->height) {
1590 scroll_steps = steps;
1591 if (steps < 0 && -steps > view->offset) {
1592 scroll_steps = -view->offset;
1594 } else if (steps > 0) {
1595 if (view->lineno == view->lines - 1 &&
1596 view->lines > view->height) {
1597 scroll_steps = view->lines - view->offset - 1;
1598 if (scroll_steps >= view->height)
1599 scroll_steps -= view->height - 1;
1604 if (!view_is_displayed(view)) {
1605 view->offset += steps;
1606 view->ops->select(view, &view->line[view->lineno]);
1610 /* Repaint the old "current" line if we be scrolling */
1611 if (ABS(steps) < view->height)
1612 draw_view_line(view, view->lineno - steps - view->offset);
1615 do_scroll_view(view, scroll_steps);
1619 /* Draw the current line */
1620 draw_view_line(view, view->lineno - view->offset);
1622 redrawwin(view->win);
1623 wrefresh(view->win);
1632 static void search_view(struct view *view, enum request request);
1635 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1637 assert(view_is_displayed(view));
1639 if (!view->ops->grep(view, line))
1642 if (lineno - view->offset >= view->height) {
1643 view->offset = lineno;
1644 view->lineno = lineno;
1648 unsigned long old_lineno = view->lineno - view->offset;
1650 view->lineno = lineno;
1651 draw_view_line(view, old_lineno);
1653 draw_view_line(view, view->lineno - view->offset);
1654 redrawwin(view->win);
1655 wrefresh(view->win);
1658 report("Line %ld matches '%s'", lineno + 1, view->grep);
1663 find_next(struct view *view, enum request request)
1665 unsigned long lineno = view->lineno;
1670 report("No previous search");
1672 search_view(view, request);
1682 case REQ_SEARCH_BACK:
1691 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1692 lineno += direction;
1694 /* Note, lineno is unsigned long so will wrap around in which case it
1695 * will become bigger than view->lines. */
1696 for (; lineno < view->lines; lineno += direction) {
1697 struct line *line = &view->line[lineno];
1699 if (find_next_line(view, lineno, line))
1703 report("No match found for '%s'", view->grep);
1707 search_view(struct view *view, enum request request)
1712 regfree(view->regex);
1715 view->regex = calloc(1, sizeof(*view->regex));
1720 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1721 if (regex_err != 0) {
1722 char buf[SIZEOF_STR] = "unknown error";
1724 regerror(regex_err, view->regex, buf, sizeof(buf));
1725 report("Search failed: %s", buf);
1729 string_copy(view->grep, opt_search);
1731 find_next(view, request);
1735 * Incremental updating
1739 end_update(struct view *view)
1743 set_nonblocking_input(FALSE);
1744 if (view->pipe == stdin)
1752 begin_update(struct view *view)
1754 const char *id = view->id;
1760 string_copy(view->cmd, opt_cmd);
1762 /* When running random commands, the view ref could have become
1763 * invalid so clear it. */
1766 } else if (view == VIEW(REQ_VIEW_TREE)) {
1767 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1769 if (strcmp(view->vid, view->id))
1772 if (!string_format(view->cmd, format, id, opt_path))
1776 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1778 if (!string_format(view->cmd, format, id, id, id, id, id))
1782 /* Special case for the pager view. */
1784 view->pipe = opt_pipe;
1787 view->pipe = popen(view->cmd, "r");
1793 set_nonblocking_input(TRUE);
1798 string_copy(view->vid, id);
1803 for (i = 0; i < view->lines; i++)
1804 if (view->line[i].data)
1805 free(view->line[i].data);
1811 view->start_time = time(NULL);
1816 static struct line *
1817 realloc_lines(struct view *view, size_t line_size)
1819 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1825 view->line_size = line_size;
1830 update_view(struct view *view)
1832 char in_buffer[BUFSIZ];
1833 char out_buffer[BUFSIZ * 2];
1835 /* The number of lines to read. If too low it will cause too much
1836 * redrawing (and possible flickering), if too high responsiveness
1838 unsigned long lines = view->height;
1839 int redraw_from = -1;
1844 /* Only redraw if lines are visible. */
1845 if (view->offset + view->height >= view->lines)
1846 redraw_from = view->lines - view->offset;
1848 /* FIXME: This is probably not perfect for backgrounded views. */
1849 if (!realloc_lines(view, view->lines + lines))
1852 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1853 size_t linelen = strlen(line);
1856 line[linelen - 1] = 0;
1858 if (opt_iconv != ICONV_NONE) {
1860 size_t inlen = linelen;
1862 char *outbuf = out_buffer;
1863 size_t outlen = sizeof(out_buffer);
1867 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1868 if (ret != (size_t) -1) {
1870 linelen = strlen(out_buffer);
1874 if (!view->ops->read(view, line))
1884 lines = view->lines;
1885 for (digits = 0; lines; digits++)
1888 /* Keep the displayed view in sync with line number scaling. */
1889 if (digits != view->digits) {
1890 view->digits = digits;
1895 if (!view_is_displayed(view))
1898 if (view == VIEW(REQ_VIEW_TREE)) {
1899 /* Clear the view and redraw everything since the tree sorting
1900 * might have rearranged things. */
1903 } else if (redraw_from >= 0) {
1904 /* If this is an incremental update, redraw the previous line
1905 * since for commits some members could have changed when
1906 * loading the main view. */
1907 if (redraw_from > 0)
1910 /* Incrementally draw avoids flickering. */
1911 redraw_view_from(view, redraw_from);
1914 /* Update the title _after_ the redraw so that if the redraw picks up a
1915 * commit reference in view->ref it'll be available here. */
1916 update_view_title(view);
1919 if (ferror(view->pipe)) {
1920 report("Failed to read: %s", strerror(errno));
1923 } else if (feof(view->pipe)) {
1931 report("Allocation failure");
1943 static void open_help_view(struct view *view)
1946 int lines = ARRAY_SIZE(req_info) + 2;
1949 if (view->lines > 0)
1952 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1953 if (!req_info[i].request)
1956 view->line = calloc(lines, sizeof(*view->line));
1958 report("Allocation failure");
1962 view->ops->read(view, "Quick reference for tig keybindings:");
1964 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1967 if (!req_info[i].request) {
1968 view->ops->read(view, "");
1969 view->ops->read(view, req_info[i].help);
1973 key = get_key(req_info[i].request);
1974 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1977 view->ops->read(view, buf);
1982 OPEN_DEFAULT = 0, /* Use default view switching. */
1983 OPEN_SPLIT = 1, /* Split current view. */
1984 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1985 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1989 open_view(struct view *prev, enum request request, enum open_flags flags)
1991 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1992 bool split = !!(flags & OPEN_SPLIT);
1993 bool reload = !!(flags & OPEN_RELOAD);
1994 struct view *view = VIEW(request);
1995 int nviews = displayed_views();
1996 struct view *base_view = display[0];
1998 if (view == prev && nviews == 1 && !reload) {
1999 report("Already in %s view", view->name);
2003 if (view == VIEW(REQ_VIEW_HELP)) {
2004 open_help_view(view);
2006 } else if ((reload || strcmp(view->vid, view->id)) &&
2007 !begin_update(view)) {
2008 report("Failed to load %s view", view->name);
2017 /* Maximize the current view. */
2018 memset(display, 0, sizeof(display));
2020 display[current_view] = view;
2023 /* Resize the view when switching between split- and full-screen,
2024 * or when switching between two different full-screen views. */
2025 if (nviews != displayed_views() ||
2026 (nviews == 1 && base_view != display[0]))
2029 if (split && prev->lineno - prev->offset >= prev->height) {
2030 /* Take the title line into account. */
2031 int lines = prev->lineno - prev->offset - prev->height + 1;
2033 /* Scroll the view that was split if the current line is
2034 * outside the new limited view. */
2035 do_scroll_view(prev, lines);
2038 if (prev && view != prev) {
2039 if (split && !backgrounded) {
2040 /* "Blur" the previous view. */
2041 update_view_title(prev);
2044 view->parent = prev;
2047 if (view->pipe && view->lines == 0) {
2048 /* Clear the old view and let the incremental updating refill
2057 /* If the view is backgrounded the above calls to report()
2058 * won't redraw the view title. */
2060 update_view_title(view);
2065 * User request switch noodle
2069 view_driver(struct view *view, enum request request)
2076 case REQ_MOVE_PAGE_UP:
2077 case REQ_MOVE_PAGE_DOWN:
2078 case REQ_MOVE_FIRST_LINE:
2079 case REQ_MOVE_LAST_LINE:
2080 move_view(view, request);
2083 case REQ_SCROLL_LINE_DOWN:
2084 case REQ_SCROLL_LINE_UP:
2085 case REQ_SCROLL_PAGE_DOWN:
2086 case REQ_SCROLL_PAGE_UP:
2087 scroll_view(view, request);
2092 report("No file chosen, press 't' to open tree view");
2101 case REQ_VIEW_PAGER:
2102 open_view(view, request, OPEN_DEFAULT);
2107 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2109 if ((view == VIEW(REQ_VIEW_DIFF) &&
2110 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2111 (view == VIEW(REQ_VIEW_BLOB) &&
2112 view->parent == VIEW(REQ_VIEW_TREE))) {
2113 view = view->parent;
2114 move_view(view, request);
2115 if (view_is_displayed(view))
2116 update_view_title(view);
2118 move_view(view, request);
2125 report("Nothing to enter");
2128 return view->ops->enter(view, &view->line[view->lineno]);
2132 int nviews = displayed_views();
2133 int next_view = (current_view + 1) % nviews;
2135 if (next_view == current_view) {
2136 report("Only one view is displayed");
2140 current_view = next_view;
2141 /* Blur out the title of the previous view. */
2142 update_view_title(view);
2146 case REQ_TOGGLE_LINENO:
2147 opt_line_number = !opt_line_number;
2151 case REQ_TOGGLE_REV_GRAPH:
2152 opt_rev_graph = !opt_rev_graph;
2157 /* Always reload^Wrerun commands from the prompt. */
2158 open_view(view, opt_request, OPEN_RELOAD);
2162 case REQ_SEARCH_BACK:
2163 search_view(view, request);
2168 find_next(view, request);
2171 case REQ_STOP_LOADING:
2172 for (i = 0; i < ARRAY_SIZE(views); i++) {
2175 report("Stopped loading the %s view", view->name),
2180 case REQ_SHOW_VERSION:
2181 report("%s (built %s)", VERSION, __DATE__);
2184 case REQ_SCREEN_RESIZE:
2187 case REQ_SCREEN_REDRAW:
2195 case REQ_VIEW_CLOSE:
2196 /* XXX: Mark closed views by letting view->parent point to the
2197 * view itself. Parents to closed view should never be
2200 view->parent->parent != view->parent) {
2201 memset(display, 0, sizeof(display));
2203 display[current_view] = view->parent;
2204 view->parent = view;
2214 /* An unknown key will show most commonly used commands. */
2215 report("Unknown key, press 'h' for help");
2228 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2230 char *text = line->data;
2231 enum line_type type = line->type;
2232 int textlen = strlen(text);
2235 wmove(view->win, lineno, 0);
2239 wchgat(view->win, -1, 0, type, NULL);
2242 attr = get_line_attr(type);
2243 wattrset(view->win, attr);
2245 if (opt_line_number || opt_tab_size < TABSIZE) {
2246 static char spaces[] = " ";
2247 int col_offset = 0, col = 0;
2249 if (opt_line_number) {
2250 unsigned long real_lineno = view->offset + lineno + 1;
2252 if (real_lineno == 1 ||
2253 (real_lineno % opt_num_interval) == 0) {
2254 wprintw(view->win, "%.*d", view->digits, real_lineno);
2257 waddnstr(view->win, spaces,
2258 MIN(view->digits, STRING_SIZE(spaces)));
2260 waddstr(view->win, ": ");
2261 col_offset = view->digits + 2;
2264 while (text && col_offset + col < view->width) {
2265 int cols_max = view->width - col_offset - col;
2269 if (*text == '\t') {
2271 assert(sizeof(spaces) > TABSIZE);
2273 cols = opt_tab_size - (col % opt_tab_size);
2276 text = strchr(text, '\t');
2277 cols = line ? text - pos : strlen(pos);
2280 waddnstr(view->win, pos, MIN(cols, cols_max));
2285 int col = 0, pos = 0;
2287 for (; pos < textlen && col < view->width; pos++, col++)
2288 if (text[pos] == '\t')
2289 col += TABSIZE - (col % TABSIZE) - 1;
2291 waddnstr(view->win, text, pos);
2298 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2300 char refbuf[SIZEOF_STR];
2304 if (!string_format(refbuf, "git describe %s", commit_id))
2307 pipe = popen(refbuf, "r");
2311 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2312 ref = chomp_string(ref);
2318 /* This is the only fatal call, since it can "corrupt" the buffer. */
2319 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2326 add_pager_refs(struct view *view, struct line *line)
2328 char buf[SIZEOF_STR];
2329 char *commit_id = line->data + STRING_SIZE("commit ");
2331 size_t bufpos = 0, refpos = 0;
2332 const char *sep = "Refs: ";
2333 bool is_tag = FALSE;
2335 assert(line->type == LINE_COMMIT);
2337 refs = get_refs(commit_id);
2339 if (view == VIEW(REQ_VIEW_DIFF))
2340 goto try_add_describe_ref;
2345 struct ref *ref = refs[refpos];
2346 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2348 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2353 } while (refs[refpos++]->next);
2355 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2356 try_add_describe_ref:
2357 /* Add <tag>-g<commit_id> "fake" reference. */
2358 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2365 if (!realloc_lines(view, view->line_size + 1))
2368 line = &view->line[view->lines];
2369 line->data = strdup(buf);
2373 line->type = LINE_PP_REFS;
2378 pager_read(struct view *view, char *data)
2380 struct line *line = &view->line[view->lines];
2382 line->data = strdup(data);
2386 line->type = get_line_type(line->data);
2389 if (line->type == LINE_COMMIT &&
2390 (view == VIEW(REQ_VIEW_DIFF) ||
2391 view == VIEW(REQ_VIEW_LOG)))
2392 add_pager_refs(view, line);
2398 pager_enter(struct view *view, struct line *line)
2402 if (line->type == LINE_COMMIT &&
2403 (view == VIEW(REQ_VIEW_LOG) ||
2404 view == VIEW(REQ_VIEW_PAGER))) {
2405 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2409 /* Always scroll the view even if it was split. That way
2410 * you can use Enter to scroll through the log view and
2411 * split open each commit diff. */
2412 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2414 /* FIXME: A minor workaround. Scrolling the view will call report("")
2415 * but if we are scrolling a non-current view this won't properly
2416 * update the view title. */
2418 update_view_title(view);
2424 pager_grep(struct view *view, struct line *line)
2427 char *text = line->data;
2432 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2439 pager_select(struct view *view, struct line *line)
2441 if (line->type == LINE_COMMIT) {
2442 char *text = line->data;
2444 string_copy(view->ref, text + STRING_SIZE("commit "));
2445 string_copy(ref_commit, view->ref);
2449 static struct view_ops pager_ops = {
2463 /* Parse output from git-ls-tree(1):
2465 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2466 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2467 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2468 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2471 #define SIZEOF_TREE_ATTR \
2472 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2474 #define TREE_UP_FORMAT "040000 tree %s\t.."
2477 tree_compare_entry(enum line_type type1, char *name1,
2478 enum line_type type2, char *name2)
2480 if (type1 != type2) {
2481 if (type1 == LINE_TREE_DIR)
2486 return strcmp(name1, name2);
2490 tree_read(struct view *view, char *text)
2492 size_t textlen = strlen(text);
2493 char buf[SIZEOF_STR];
2495 enum line_type type;
2496 bool first_read = view->lines == 0;
2498 if (textlen <= SIZEOF_TREE_ATTR)
2501 type = text[STRING_SIZE("100644 ")] == 't'
2502 ? LINE_TREE_DIR : LINE_TREE_FILE;
2505 /* Add path info line */
2506 if (string_format(buf, "Directory path /%s", opt_path) &&
2507 realloc_lines(view, view->line_size + 1) &&
2508 pager_read(view, buf))
2509 view->line[view->lines - 1].type = LINE_DEFAULT;
2513 /* Insert "link" to parent directory. */
2515 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2516 realloc_lines(view, view->line_size + 1) &&
2517 pager_read(view, buf))
2518 view->line[view->lines - 1].type = LINE_TREE_DIR;
2523 /* Strip the path part ... */
2525 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2526 size_t striplen = strlen(opt_path);
2527 char *path = text + SIZEOF_TREE_ATTR;
2529 if (pathlen > striplen)
2530 memmove(path, path + striplen,
2531 pathlen - striplen + 1);
2534 /* Skip "Directory ..." and ".." line. */
2535 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2536 struct line *line = &view->line[pos];
2537 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2538 char *path2 = text + SIZEOF_TREE_ATTR;
2539 int cmp = tree_compare_entry(line->type, path1, type, path2);
2544 text = strdup(text);
2548 if (view->lines > pos)
2549 memmove(&view->line[pos + 1], &view->line[pos],
2550 (view->lines - pos) * sizeof(*line));
2552 line = &view->line[pos];
2559 if (!pager_read(view, text))
2562 /* Move the current line to the first tree entry. */
2566 view->line[view->lines - 1].type = type;
2571 tree_enter(struct view *view, struct line *line)
2573 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2574 enum request request;
2576 switch (line->type) {
2578 /* Depending on whether it is a subdir or parent (updir?) link
2579 * mangle the path buffer. */
2580 if (line == &view->line[1] && *opt_path) {
2581 size_t path_len = strlen(opt_path);
2582 char *dirsep = opt_path + path_len - 1;
2584 while (dirsep > opt_path && dirsep[-1] != '/')
2590 size_t pathlen = strlen(opt_path);
2591 size_t origlen = pathlen;
2592 char *data = line->data;
2593 char *basename = data + SIZEOF_TREE_ATTR;
2595 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2596 opt_path[origlen] = 0;
2601 /* Trees and subtrees share the same ID, so they are not not
2602 * unique like blobs. */
2603 flags |= OPEN_RELOAD;
2604 request = REQ_VIEW_TREE;
2607 case LINE_TREE_FILE:
2608 request = REQ_VIEW_BLOB;
2615 open_view(view, request, flags);
2621 tree_select(struct view *view, struct line *line)
2623 char *text = line->data;
2625 text += STRING_SIZE("100644 blob ");
2627 if (line->type == LINE_TREE_FILE) {
2628 string_ncopy(ref_blob, text, 40);
2629 /* Also update the blob view's ref, since all there must always
2631 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2633 } else if (line->type != LINE_TREE_DIR) {
2637 string_ncopy(view->ref, text, 40);
2640 static struct view_ops tree_ops = {
2650 blob_read(struct view *view, char *line)
2652 bool state = pager_read(view, line);
2655 view->line[view->lines - 1].type = LINE_DEFAULT;
2660 static struct view_ops blob_ops = {
2675 char id[SIZEOF_REV]; /* SHA1 ID. */
2676 char title[75]; /* First line of the commit message. */
2677 char author[75]; /* Author of the commit. */
2678 struct tm time; /* Date from the author ident. */
2679 struct ref **refs; /* Repository references. */
2680 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2681 size_t graph_size; /* The width of the graph array. */
2685 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2687 char buf[DATE_COLS + 1];
2688 struct commit *commit = line->data;
2689 enum line_type type;
2695 if (!*commit->author)
2698 wmove(view->win, lineno, col);
2702 wattrset(view->win, get_line_attr(type));
2703 wchgat(view->win, -1, 0, type, NULL);
2706 type = LINE_MAIN_COMMIT;
2707 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2710 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2711 waddnstr(view->win, buf, timelen);
2712 waddstr(view->win, " ");
2715 wmove(view->win, lineno, col);
2716 if (type != LINE_CURSOR)
2717 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2720 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2722 authorlen = strlen(commit->author);
2723 if (authorlen > AUTHOR_COLS - 2) {
2724 authorlen = AUTHOR_COLS - 2;
2730 waddnstr(view->win, commit->author, authorlen);
2731 if (type != LINE_CURSOR)
2732 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2733 waddch(view->win, '~');
2735 waddstr(view->win, commit->author);
2739 if (type != LINE_CURSOR)
2740 wattrset(view->win, A_NORMAL);
2742 if (opt_rev_graph && commit->graph_size) {
2745 wmove(view->win, lineno, col);
2746 /* Using waddch() instead of waddnstr() ensures that
2747 * they'll be rendered correctly for the cursor line. */
2748 for (i = 0; i < commit->graph_size; i++)
2749 waddch(view->win, commit->graph[i]);
2751 col += commit->graph_size + 1;
2754 wmove(view->win, lineno, col);
2760 if (type == LINE_CURSOR)
2762 else if (commit->refs[i]->tag)
2763 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2765 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2766 waddstr(view->win, "[");
2767 waddstr(view->win, commit->refs[i]->name);
2768 waddstr(view->win, "]");
2769 if (type != LINE_CURSOR)
2770 wattrset(view->win, A_NORMAL);
2771 waddstr(view->win, " ");
2772 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2773 } while (commit->refs[i++]->next);
2776 if (type != LINE_CURSOR)
2777 wattrset(view->win, get_line_attr(type));
2780 int titlelen = strlen(commit->title);
2782 if (col + titlelen > view->width)
2783 titlelen = view->width - col;
2785 waddnstr(view->win, commit->title, titlelen);
2793 struct rev_stack *prev, *next, *parents;
2794 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2796 struct commit *commit;
2800 /* Parents of the commit being visualized. */
2801 static struct rev_stack graph_parents[3];
2803 /* The current stack of revisions on the graph. */
2804 static struct rev_stack graph_stacks[3] = {
2805 { &graph_stacks[2], &graph_stacks[1], &graph_parents[0] },
2806 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
2807 { &graph_stacks[1], &graph_stacks[0], &graph_parents[2] },
2811 graph_parent_is_merge(struct rev_stack *graph)
2813 return graph->parents->size > 1;
2817 reset_rev_graph(struct rev_stack *graph)
2819 graph->size = graph->pos = 0;
2820 graph->commit = NULL;
2821 memset(graph->parents, 0, sizeof(*graph->parents));
2825 append_to_rev_graph(struct rev_stack *stack, chtype symbol)
2827 if (stack->commit->graph_size < ARRAY_SIZE(stack->commit->graph) - 1)
2828 stack->commit->graph[stack->commit->graph_size++] = symbol;
2832 push_rev_stack(struct rev_stack *stack, char *parent)
2834 /* Combine duplicate parents lines. */
2835 if (stack->size > 0 &&
2836 !strncmp(stack->rev[stack->size - 1], parent, SIZEOF_REV))
2839 if (stack->size < SIZEOF_REVITEMS) {
2840 string_ncopy(stack->rev[stack->size++], parent, SIZEOF_REV);
2845 draw_rev_graph(struct rev_stack *graph)
2847 chtype symbol, separator, line;
2850 /* Place the symbol for this commit. */
2851 if (graph->parents->size == 0)
2852 symbol = REVGRAPH_INIT;
2853 else if (graph->parents->size > 1)
2854 symbol = REVGRAPH_MERGE;
2855 else if (graph->pos >= graph->size)
2856 symbol = REVGRAPH_BRANCH;
2858 symbol = REVGRAPH_COMMIT;
2861 line = REVGRAPH_LINE;
2863 for (i = 0; i < graph->pos; i++) {
2864 append_to_rev_graph(graph, line);
2865 if (graph_parent_is_merge(graph->prev) &&
2866 graph->prev->pos == i) {
2870 append_to_rev_graph(graph, separator);
2873 append_to_rev_graph(graph, symbol);
2875 if (graph->prev->size > graph->size) {
2880 line = REVGRAPH_LINE;
2884 for (; i < graph->size; i++) {
2885 append_to_rev_graph(graph, separator);
2886 append_to_rev_graph(graph, line);
2887 if (graph_parent_is_merge(graph->prev)) {
2888 if (i < graph->prev->pos + graph->parents->size) {
2893 if (graph->prev->size > graph->size) {
2899 if (graph->prev->size > graph->size) {
2900 append_to_rev_graph(graph, separator);
2902 append_to_rev_graph(graph, line);
2907 update_rev_graph(struct rev_stack *graph)
2911 /* First traverse all lines of revisions up to the active one. */
2912 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
2913 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
2916 push_rev_stack(graph->next, graph->rev[graph->pos]);
2919 for (i = 0; i < graph->parents->size; i++)
2920 push_rev_stack(graph->next, graph->parents->rev[i]);
2922 /* FIXME: Moving branches left and right when collapsing a branch. */
2923 for (i = graph->pos + 1; i < graph->size; i++)
2924 push_rev_stack(graph->next, graph->rev[i]);
2926 draw_rev_graph(graph);
2928 graph = graph->prev;
2930 if (graph_parent_is_merge(graph) &&
2931 graph->pos < graph->size - 1 &&
2932 graph->next->size == graph->size + graph->parents->size - 1) {
2933 i = graph->pos + graph->parents->size - 1;
2934 graph->commit->graph_size = i * 2;
2935 while (i < graph->next->size - 1) {
2936 append_to_rev_graph(graph, ' ');
2937 append_to_rev_graph(graph, '\\');
2942 reset_rev_graph(graph);
2945 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2947 main_read(struct view *view, char *line)
2949 static struct rev_stack *graph = graph_stacks;
2950 enum line_type type = get_line_type(line);
2951 struct commit *commit = view->lines
2952 ? view->line[view->lines - 1].data : NULL;
2956 commit = calloc(1, sizeof(struct commit));
2960 line += STRING_SIZE("commit ");
2962 view->line[view->lines++].data = commit;
2963 string_copy(commit->id, line);
2964 commit->refs = get_refs(commit->id);
2965 graph->commit = commit;
2970 line += STRING_SIZE("parent ");
2971 push_rev_stack(graph->parents, line);
2977 char *ident = line + STRING_SIZE("author ");
2978 char *end = strchr(ident, '<');
2983 update_rev_graph(graph);
2984 graph = graph->next;
2987 char *email = end + 1;
2989 for (; end > ident && isspace(end[-1]); end--) ;
2991 if (end == ident && *email) {
2993 end = strchr(ident, '>');
2994 for (; end > ident && isspace(end[-1]); end--) ;
2999 /* End is NULL or ident meaning there's no author. */
3003 string_copy(commit->author, ident);
3005 /* Parse epoch and timezone */
3007 char *secs = strchr(end + 1, '>');
3011 if (!secs || secs[1] != ' ')
3015 time = (time_t) atol(secs);
3016 zone = strchr(secs, ' ');
3017 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3021 tz = ('0' - zone[1]) * 60 * 60 * 10;
3022 tz += ('0' - zone[2]) * 60 * 60;
3023 tz += ('0' - zone[3]) * 60;
3024 tz += ('0' - zone[4]) * 60;
3031 gmtime_r(&time, &commit->time);
3039 /* Fill in the commit title if it has not already been set. */
3040 if (commit->title[0])
3043 /* Require titles to start with a non-space character at the
3044 * offset used by git log. */
3045 /* FIXME: More gracefull handling of titles; append "..." to
3046 * shortened titles, etc. */
3047 if (strncmp(line, " ", 4) ||
3051 string_copy(commit->title, line + 4);
3058 main_enter(struct view *view, struct line *line)
3060 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3062 open_view(view, REQ_VIEW_DIFF, flags);
3067 main_grep(struct view *view, struct line *line)
3069 struct commit *commit = line->data;
3070 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3071 char buf[DATE_COLS + 1];
3074 for (state = S_TITLE; state < S_END; state++) {
3078 case S_TITLE: text = commit->title; break;
3079 case S_AUTHOR: text = commit->author; break;
3081 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3090 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3098 main_select(struct view *view, struct line *line)
3100 struct commit *commit = line->data;
3102 string_copy(view->ref, commit->id);
3103 string_copy(ref_commit, view->ref);
3106 static struct view_ops main_ops = {
3117 * Unicode / UTF-8 handling
3119 * NOTE: Much of the following code for dealing with unicode is derived from
3120 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3121 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3124 /* I've (over)annotated a lot of code snippets because I am not entirely
3125 * confident that the approach taken by this small UTF-8 interface is correct.
3129 unicode_width(unsigned long c)
3132 (c <= 0x115f /* Hangul Jamo */
3135 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3137 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3138 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3139 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3140 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3141 || (c >= 0xffe0 && c <= 0xffe6)
3142 || (c >= 0x20000 && c <= 0x2fffd)
3143 || (c >= 0x30000 && c <= 0x3fffd)))
3149 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3150 * Illegal bytes are set one. */
3151 static const unsigned char utf8_bytes[256] = {
3152 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,
3153 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,
3154 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,
3155 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,
3156 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,
3157 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,
3158 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,
3159 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,
3162 /* Decode UTF-8 multi-byte representation into a unicode character. */
3163 static inline unsigned long
3164 utf8_to_unicode(const char *string, size_t length)
3166 unsigned long unicode;
3170 unicode = string[0];
3173 unicode = (string[0] & 0x1f) << 6;
3174 unicode += (string[1] & 0x3f);
3177 unicode = (string[0] & 0x0f) << 12;
3178 unicode += ((string[1] & 0x3f) << 6);
3179 unicode += (string[2] & 0x3f);
3182 unicode = (string[0] & 0x0f) << 18;
3183 unicode += ((string[1] & 0x3f) << 12);
3184 unicode += ((string[2] & 0x3f) << 6);
3185 unicode += (string[3] & 0x3f);
3188 unicode = (string[0] & 0x0f) << 24;
3189 unicode += ((string[1] & 0x3f) << 18);
3190 unicode += ((string[2] & 0x3f) << 12);
3191 unicode += ((string[3] & 0x3f) << 6);
3192 unicode += (string[4] & 0x3f);
3195 unicode = (string[0] & 0x01) << 30;
3196 unicode += ((string[1] & 0x3f) << 24);
3197 unicode += ((string[2] & 0x3f) << 18);
3198 unicode += ((string[3] & 0x3f) << 12);
3199 unicode += ((string[4] & 0x3f) << 6);
3200 unicode += (string[5] & 0x3f);
3203 die("Invalid unicode length");
3206 /* Invalid characters could return the special 0xfffd value but NUL
3207 * should be just as good. */
3208 return unicode > 0xffff ? 0 : unicode;
3211 /* Calculates how much of string can be shown within the given maximum width
3212 * and sets trimmed parameter to non-zero value if all of string could not be
3215 * Additionally, adds to coloffset how many many columns to move to align with
3216 * the expected position. Takes into account how multi-byte and double-width
3217 * characters will effect the cursor position.
3219 * Returns the number of bytes to output from string to satisfy max_width. */
3221 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3223 const char *start = string;
3224 const char *end = strchr(string, '\0');
3230 while (string < end) {
3231 int c = *(unsigned char *) string;
3232 unsigned char bytes = utf8_bytes[c];
3234 unsigned long unicode;
3236 if (string + bytes > end)
3239 /* Change representation to figure out whether
3240 * it is a single- or double-width character. */
3242 unicode = utf8_to_unicode(string, bytes);
3243 /* FIXME: Graceful handling of invalid unicode character. */
3247 ucwidth = unicode_width(unicode);
3249 if (width > max_width) {
3254 /* The column offset collects the differences between the
3255 * number of bytes encoding a character and the number of
3256 * columns will be used for rendering said character.
3258 * So if some character A is encoded in 2 bytes, but will be
3259 * represented on the screen using only 1 byte this will and up
3260 * adding 1 to the multi-byte column offset.
3262 * Assumes that no double-width character can be encoding in
3263 * less than two bytes. */
3264 if (bytes > ucwidth)
3265 mbwidth += bytes - ucwidth;
3270 *coloffset += mbwidth;
3272 return string - start;
3280 /* Whether or not the curses interface has been initialized. */
3281 static bool cursed = FALSE;
3283 /* The status window is used for polling keystrokes. */
3284 static WINDOW *status_win;
3286 /* Update status and title window. */
3288 report(const char *msg, ...)
3290 static bool empty = TRUE;
3291 struct view *view = display[current_view];
3293 if (!empty || *msg) {
3296 va_start(args, msg);
3299 wmove(status_win, 0, 0);
3301 vwprintw(status_win, msg, args);
3306 wrefresh(status_win);
3311 update_view_title(view);
3312 update_display_cursor();
3315 /* Controls when nodelay should be in effect when polling user input. */
3317 set_nonblocking_input(bool loading)
3319 static unsigned int loading_views;
3321 if ((loading == FALSE && loading_views-- == 1) ||
3322 (loading == TRUE && loading_views++ == 0))
3323 nodelay(status_win, loading);
3331 /* Initialize the curses library */
3332 if (isatty(STDIN_FILENO)) {
3333 cursed = !!initscr();
3335 /* Leave stdin and stdout alone when acting as a pager. */
3336 FILE *io = fopen("/dev/tty", "r+");
3339 die("Failed to open /dev/tty");
3340 cursed = !!newterm(NULL, io, io);
3344 die("Failed to initialize curses");
3346 nonl(); /* Tell curses not to do NL->CR/NL on output */
3347 cbreak(); /* Take input chars one at a time, no wait for \n */
3348 noecho(); /* Don't echo input */
3349 leaveok(stdscr, TRUE);
3354 getmaxyx(stdscr, y, x);
3355 status_win = newwin(1, 0, y - 1, 0);
3357 die("Failed to create status window");
3359 /* Enable keyboard mapping */
3360 keypad(status_win, TRUE);
3361 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3365 read_prompt(const char *prompt)
3367 enum { READING, STOP, CANCEL } status = READING;
3368 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3371 while (status == READING) {
3375 foreach_view (view, i)
3378 report("%s%.*s", prompt, pos, buf);
3379 /* Refresh, accept single keystroke of input */
3380 key = wgetch(status_win);
3385 status = pos ? STOP : CANCEL;
3403 if (pos >= sizeof(buf)) {
3404 report("Input string too long");
3409 buf[pos++] = (char) key;
3413 if (status == CANCEL) {
3414 /* Clear the status window */
3425 * Repository references
3428 static struct ref *refs;
3429 static size_t refs_size;
3431 /* Id <-> ref store */
3432 static struct ref ***id_refs;
3433 static size_t id_refs_size;
3435 static struct ref **
3438 struct ref ***tmp_id_refs;
3439 struct ref **ref_list = NULL;
3440 size_t ref_list_size = 0;
3443 for (i = 0; i < id_refs_size; i++)
3444 if (!strcmp(id, id_refs[i][0]->id))
3447 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3451 id_refs = tmp_id_refs;
3453 for (i = 0; i < refs_size; i++) {
3456 if (strcmp(id, refs[i].id))
3459 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3467 if (ref_list_size > 0)
3468 ref_list[ref_list_size - 1]->next = 1;
3469 ref_list[ref_list_size] = &refs[i];
3471 /* XXX: The properties of the commit chains ensures that we can
3472 * safely modify the shared ref. The repo references will
3473 * always be similar for the same id. */
3474 ref_list[ref_list_size]->next = 0;
3479 id_refs[id_refs_size++] = ref_list;
3485 read_ref(char *id, int idlen, char *name, int namelen)
3490 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3491 /* Commits referenced by tags has "^{}" appended. */
3492 if (name[namelen - 1] != '}')
3495 while (namelen > 0 && name[namelen] != '^')
3499 namelen -= STRING_SIZE("refs/tags/");
3500 name += STRING_SIZE("refs/tags/");
3502 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3503 namelen -= STRING_SIZE("refs/heads/");
3504 name += STRING_SIZE("refs/heads/");
3506 } else if (!strcmp(name, "HEAD")) {
3510 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3514 ref = &refs[refs_size++];
3515 ref->name = malloc(namelen + 1);
3519 strncpy(ref->name, name, namelen);
3520 ref->name[namelen] = 0;
3522 string_copy(ref->id, id);
3530 const char *cmd_env = getenv("TIG_LS_REMOTE");
3531 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3533 return read_properties(popen(cmd, "r"), "\t", read_ref);
3537 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3539 if (!strcmp(name, "i18n.commitencoding"))
3540 string_copy(opt_encoding, value);
3546 load_repo_config(void)
3548 return read_properties(popen("git repo-config --list", "r"),
3549 "=", read_repo_config_option);
3553 read_properties(FILE *pipe, const char *separators,
3554 int (*read_property)(char *, int, char *, int))
3556 char buffer[BUFSIZ];
3563 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3568 name = chomp_string(name);
3569 namelen = strcspn(name, separators);
3571 if (name[namelen]) {
3573 value = chomp_string(name + namelen + 1);
3574 valuelen = strlen(value);
3581 state = read_property(name, namelen, value, valuelen);
3584 if (state != ERR && ferror(pipe))
3597 static void __NORETURN
3600 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3606 static void __NORETURN
3607 die(const char *err, ...)
3613 va_start(args, err);
3614 fputs("tig: ", stderr);
3615 vfprintf(stderr, err, args);
3616 fputs("\n", stderr);
3623 main(int argc, char *argv[])
3626 enum request request;
3629 signal(SIGINT, quit);
3631 if (setlocale(LC_ALL, "")) {
3632 string_copy(opt_codeset, nl_langinfo(CODESET));
3635 if (load_options() == ERR)
3636 die("Failed to load user config.");
3638 /* Load the repo config file so options can be overwritten from
3639 * the command line. */
3640 if (load_repo_config() == ERR)
3641 die("Failed to load repo config.");
3643 if (!parse_options(argc, argv))
3646 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3647 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3648 if (opt_iconv == ICONV_NONE)
3649 die("Failed to initialize character set conversion");
3652 if (load_refs() == ERR)
3653 die("Failed to load refs.");
3655 /* Require a git repository unless when running in pager mode. */
3656 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3657 die("Not a git repository");
3659 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3660 view->cmd_env = getenv(view->cmd_env);
3662 request = opt_request;
3666 while (view_driver(display[current_view], request)) {
3670 foreach_view (view, i)
3673 /* Refresh, accept single keystroke of input */
3674 key = wgetch(status_win);
3676 request = get_keybinding(display[current_view]->keymap, key);
3678 /* Some low-level request handling. This keeps access to
3679 * status_win restricted. */
3683 char *cmd = read_prompt(":");
3685 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3686 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3687 opt_request = REQ_VIEW_DIFF;
3689 opt_request = REQ_VIEW_PAGER;
3698 case REQ_SEARCH_BACK:
3700 const char *prompt = request == REQ_SEARCH
3702 char *search = read_prompt(prompt);
3705 string_copy(opt_search, search);
3710 case REQ_SCREEN_RESIZE:
3714 getmaxyx(stdscr, height, width);
3716 /* Resize the status view and let the view driver take
3717 * care of resizing the displayed views. */
3718 wresize(status_win, 1, width);
3719 mvwin(status_win, height - 1, 0);
3720 wrefresh(status_win);