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 TIG_VERSION "unknown-version"
30 #include <sys/types.h>
46 #define __NORETURN __attribute__((__noreturn__))
51 static void __NORETURN die(const char *err, ...);
52 static void report(const char *msg, ...);
53 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
54 static void set_nonblocking_input(bool loading);
55 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
57 #define ABS(x) ((x) >= 0 ? (x) : -(x))
58 #define MIN(x, y) ((x) < (y) ? (x) : (y))
60 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
61 #define STRING_SIZE(x) (sizeof(x) - 1)
63 #define SIZEOF_STR 1024 /* Default string size. */
64 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
65 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
69 #define REVGRAPH_INIT 'I'
70 #define REVGRAPH_MERGE 'M'
71 #define REVGRAPH_BRANCH '+'
72 #define REVGRAPH_COMMIT '*'
73 #define REVGRAPH_LINE '|'
75 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
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)
99 #define TIG_LS_REMOTE \
100 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
102 #define TIG_DIFF_CMD \
103 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
105 #define TIG_LOG_CMD \
106 "git log --cc --stat -n100 %s 2>/dev/null"
108 #define TIG_MAIN_CMD \
109 "git log --topo-order --pretty=raw %s 2>/dev/null"
111 #define TIG_TREE_CMD \
114 #define TIG_BLOB_CMD \
115 "git cat-file blob %s"
117 /* XXX: Needs to be defined to the empty string. */
118 #define TIG_HELP_CMD ""
119 #define TIG_PAGER_CMD ""
120 #define TIG_STATUS_CMD ""
121 #define TIG_STAGE_CMD ""
123 /* Some ascii-shorthands fitted into the ncurses namespace. */
125 #define KEY_RETURN '\r'
130 char *name; /* Ref name; tag or head names are shortened. */
131 char id[SIZEOF_REV]; /* Commit SHA1 ID */
132 unsigned int tag:1; /* Is it a tag? */
133 unsigned int remote:1; /* Is it a remote ref? */
134 unsigned int next:1; /* For ref lists: are there more refs? */
137 static struct ref **get_refs(char *id);
146 set_from_int_map(struct int_map *map, size_t map_size,
147 int *value, const char *name, int namelen)
152 for (i = 0; i < map_size; i++)
153 if (namelen == map[i].namelen &&
154 !strncasecmp(name, map[i].name, namelen)) {
155 *value = map[i].value;
168 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
170 if (srclen > dstlen - 1)
173 strncpy(dst, src, srclen);
177 /* Shorthands for safely copying into a fixed buffer. */
179 #define string_copy(dst, src) \
180 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
182 #define string_ncopy(dst, src, srclen) \
183 string_ncopy_do(dst, sizeof(dst), src, srclen)
185 #define string_copy_rev(dst, src) \
186 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
188 #define string_add(dst, from, src) \
189 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
192 chomp_string(char *name)
196 while (isspace(*name))
199 namelen = strlen(name) - 1;
200 while (namelen > 0 && isspace(name[namelen]))
207 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
210 size_t pos = bufpos ? *bufpos : 0;
213 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
219 return pos >= bufsize ? FALSE : TRUE;
222 #define string_format(buf, fmt, args...) \
223 string_nformat(buf, sizeof(buf), NULL, fmt, args)
225 #define string_format_from(buf, from, fmt, args...) \
226 string_nformat(buf, sizeof(buf), from, fmt, args)
229 string_enum_compare(const char *str1, const char *str2, int len)
233 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
235 /* Diff-Header == DIFF_HEADER */
236 for (i = 0; i < len; i++) {
237 if (toupper(str1[i]) == toupper(str2[i]))
240 if (string_enum_sep(str1[i]) &&
241 string_enum_sep(str2[i]))
244 return str1[i] - str2[i];
252 * NOTE: The following is a slightly modified copy of the git project's shell
253 * quoting routines found in the quote.c file.
255 * Help to copy the thing properly quoted for the shell safety. any single
256 * quote is replaced with '\'', any exclamation point is replaced with '\!',
257 * and the whole thing is enclosed in a
260 * original sq_quote result
261 * name ==> name ==> 'name'
262 * a b ==> a b ==> 'a b'
263 * a'b ==> a'\''b ==> 'a'\''b'
264 * a!b ==> a'\!'b ==> 'a'\!'b'
268 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
272 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
275 while ((c = *src++)) {
276 if (c == '\'' || c == '!') {
287 if (bufsize < SIZEOF_STR)
299 /* XXX: Keep the view request first and in sync with views[]. */ \
300 REQ_GROUP("View switching") \
301 REQ_(VIEW_MAIN, "Show main view"), \
302 REQ_(VIEW_DIFF, "Show diff view"), \
303 REQ_(VIEW_LOG, "Show log view"), \
304 REQ_(VIEW_TREE, "Show tree view"), \
305 REQ_(VIEW_BLOB, "Show blob view"), \
306 REQ_(VIEW_HELP, "Show help page"), \
307 REQ_(VIEW_PAGER, "Show pager view"), \
308 REQ_(VIEW_STATUS, "Show status view"), \
309 REQ_(VIEW_STAGE, "Show stage view"), \
311 REQ_GROUP("View manipulation") \
312 REQ_(ENTER, "Enter current line and scroll"), \
313 REQ_(NEXT, "Move to next"), \
314 REQ_(PREVIOUS, "Move to previous"), \
315 REQ_(VIEW_NEXT, "Move focus to next view"), \
316 REQ_(VIEW_CLOSE, "Close the current view"), \
317 REQ_(QUIT, "Close all views and quit"), \
319 REQ_GROUP("Cursor navigation") \
320 REQ_(MOVE_UP, "Move cursor one line up"), \
321 REQ_(MOVE_DOWN, "Move cursor one line down"), \
322 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
323 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
324 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
325 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
327 REQ_GROUP("Scrolling") \
328 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
329 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
330 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
331 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
333 REQ_GROUP("Searching") \
334 REQ_(SEARCH, "Search the view"), \
335 REQ_(SEARCH_BACK, "Search backwards in the view"), \
336 REQ_(FIND_NEXT, "Find next search match"), \
337 REQ_(FIND_PREV, "Find previous search match"), \
340 REQ_(NONE, "Do nothing"), \
341 REQ_(PROMPT, "Bring up the prompt"), \
342 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
343 REQ_(SCREEN_RESIZE, "Resize the screen"), \
344 REQ_(SHOW_VERSION, "Show version information"), \
345 REQ_(STOP_LOADING, "Stop all loading views"), \
346 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
347 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
348 REQ_(STATUS_UPDATE, "Update file status"), \
349 REQ_(EDIT, "Open in editor")
352 /* User action requests. */
354 #define REQ_GROUP(help)
355 #define REQ_(req, help) REQ_##req
357 /* Offset all requests to avoid conflicts with ncurses getch values. */
358 REQ_OFFSET = KEY_MAX + 1,
366 struct request_info {
367 enum request request;
373 static struct request_info req_info[] = {
374 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
375 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
382 get_request(const char *name)
384 int namelen = strlen(name);
387 for (i = 0; i < ARRAY_SIZE(req_info); i++)
388 if (req_info[i].namelen == namelen &&
389 !string_enum_compare(req_info[i].name, name, namelen))
390 return req_info[i].request;
400 static const char usage[] =
401 "tig " TIG_VERSION " (" __DATE__ ")\n"
403 "Usage: tig [options]\n"
404 " or: tig [options] [--] [git log options]\n"
405 " or: tig [options] log [git log options]\n"
406 " or: tig [options] diff [git diff options]\n"
407 " or: tig [options] show [git show options]\n"
408 " or: tig [options] < [git command output]\n"
411 " -l Start up in log view\n"
412 " -d Start up in diff view\n"
413 " -S Start up in status view\n"
414 " -n[I], --line-number[=I] Show line numbers with given interval\n"
415 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
416 " -- Mark end of tig options\n"
417 " -v, --version Show version and exit\n"
418 " -h, --help Show help message and exit\n";
420 /* Option and state variables. */
421 static bool opt_line_number = FALSE;
422 static bool opt_rev_graph = FALSE;
423 static int opt_num_interval = NUMBER_INTERVAL;
424 static int opt_tab_size = TABSIZE;
425 static enum request opt_request = REQ_VIEW_MAIN;
426 static char opt_cmd[SIZEOF_STR] = "";
427 static char opt_path[SIZEOF_STR] = "";
428 static FILE *opt_pipe = NULL;
429 static char opt_encoding[20] = "UTF-8";
430 static bool opt_utf8 = TRUE;
431 static char opt_codeset[20] = "UTF-8";
432 static iconv_t opt_iconv = ICONV_NONE;
433 static char opt_search[SIZEOF_STR] = "";
434 static char opt_cdup[SIZEOF_STR] = "";
435 static char opt_git_dir[SIZEOF_STR] = "";
436 static char opt_editor[SIZEOF_STR] = "";
444 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
454 int namelen = strlen(name);
458 if (strncmp(opt, name, namelen))
461 if (opt[namelen] == '=')
462 value = opt + namelen + 1;
465 if (!short_name || opt[1] != short_name)
470 va_start(args, type);
471 if (type == OPT_INT) {
472 number = va_arg(args, int *);
474 *number = atoi(value);
481 /* Returns the index of log or diff command or -1 to exit. */
483 parse_options(int argc, char *argv[])
487 for (i = 1; i < argc; i++) {
490 if (!strcmp(opt, "log") ||
491 !strcmp(opt, "diff") ||
492 !strcmp(opt, "show")) {
493 opt_request = opt[0] == 'l'
494 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
498 if (opt[0] && opt[0] != '-')
501 if (!strcmp(opt, "-l")) {
502 opt_request = REQ_VIEW_LOG;
506 if (!strcmp(opt, "-d")) {
507 opt_request = REQ_VIEW_DIFF;
511 if (!strcmp(opt, "-S")) {
512 opt_request = REQ_VIEW_STATUS;
516 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
517 opt_line_number = TRUE;
521 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
522 opt_tab_size = MIN(opt_tab_size, TABSIZE);
526 if (check_option(opt, 'v', "version", OPT_NONE)) {
527 printf("tig version %s\n", TIG_VERSION);
531 if (check_option(opt, 'h', "help", OPT_NONE)) {
536 if (!strcmp(opt, "--")) {
541 die("unknown option '%s'\n\n%s", opt, usage);
544 if (!isatty(STDIN_FILENO)) {
545 opt_request = REQ_VIEW_PAGER;
548 } else if (i < argc) {
551 if (opt_request == REQ_VIEW_MAIN)
552 /* XXX: This is vulnerable to the user overriding
553 * options required for the main view parser. */
554 string_copy(opt_cmd, "git log --pretty=raw");
556 string_copy(opt_cmd, "git");
557 buf_size = strlen(opt_cmd);
559 while (buf_size < sizeof(opt_cmd) && i < argc) {
560 opt_cmd[buf_size++] = ' ';
561 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
564 if (buf_size >= sizeof(opt_cmd))
565 die("command too long");
567 opt_cmd[buf_size] = 0;
570 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
578 * Line-oriented content detection.
582 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
583 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
584 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
585 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
586 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
587 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
588 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
589 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
590 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
591 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
592 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
593 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
594 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
595 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
596 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
597 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
598 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
599 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
600 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
601 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
602 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
603 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
604 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
605 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
606 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
607 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
608 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
609 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
610 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
611 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
612 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
613 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
614 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
615 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
616 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
617 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
618 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
619 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
620 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
621 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
622 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
623 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
624 LINE(STAT_SECTION, "", COLOR_DEFAULT, COLOR_BLUE, A_BOLD), \
625 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
626 LINE(STAT_STAGED, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
627 LINE(STAT_UNSTAGED,"", COLOR_YELLOW, COLOR_DEFAULT, 0), \
628 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0)
631 #define LINE(type, line, fg, bg, attr) \
638 const char *name; /* Option name. */
639 int namelen; /* Size of option name. */
640 const char *line; /* The start of line to match. */
641 int linelen; /* Size of string to match. */
642 int fg, bg, attr; /* Color and text attributes for the lines. */
645 static struct line_info line_info[] = {
646 #define LINE(type, line, fg, bg, attr) \
647 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
652 static enum line_type
653 get_line_type(char *line)
655 int linelen = strlen(line);
658 for (type = 0; type < ARRAY_SIZE(line_info); type++)
659 /* Case insensitive search matches Signed-off-by lines better. */
660 if (linelen >= line_info[type].linelen &&
661 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
668 get_line_attr(enum line_type type)
670 assert(type < ARRAY_SIZE(line_info));
671 return COLOR_PAIR(type) | line_info[type].attr;
674 static struct line_info *
675 get_line_info(char *name, int namelen)
679 for (type = 0; type < ARRAY_SIZE(line_info); type++)
680 if (namelen == line_info[type].namelen &&
681 !string_enum_compare(line_info[type].name, name, namelen))
682 return &line_info[type];
690 int default_bg = COLOR_BLACK;
691 int default_fg = COLOR_WHITE;
696 if (use_default_colors() != ERR) {
701 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
702 struct line_info *info = &line_info[type];
703 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
704 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
706 init_pair(type, fg, bg);
714 unsigned int selected:1;
716 void *data; /* User data */
726 enum request request;
727 struct keybinding *next;
730 static struct keybinding default_keybindings[] = {
732 { 'm', REQ_VIEW_MAIN },
733 { 'd', REQ_VIEW_DIFF },
734 { 'l', REQ_VIEW_LOG },
735 { 't', REQ_VIEW_TREE },
736 { 'f', REQ_VIEW_BLOB },
737 { 'p', REQ_VIEW_PAGER },
738 { 'h', REQ_VIEW_HELP },
739 { 'S', REQ_VIEW_STATUS },
740 { 'c', REQ_VIEW_STAGE },
742 /* View manipulation */
743 { 'q', REQ_VIEW_CLOSE },
744 { KEY_TAB, REQ_VIEW_NEXT },
745 { KEY_RETURN, REQ_ENTER },
746 { KEY_UP, REQ_PREVIOUS },
747 { KEY_DOWN, REQ_NEXT },
749 /* Cursor navigation */
750 { 'k', REQ_MOVE_UP },
751 { 'j', REQ_MOVE_DOWN },
752 { KEY_HOME, REQ_MOVE_FIRST_LINE },
753 { KEY_END, REQ_MOVE_LAST_LINE },
754 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
755 { ' ', REQ_MOVE_PAGE_DOWN },
756 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
757 { 'b', REQ_MOVE_PAGE_UP },
758 { '-', REQ_MOVE_PAGE_UP },
761 { KEY_IC, REQ_SCROLL_LINE_UP },
762 { KEY_DC, REQ_SCROLL_LINE_DOWN },
763 { 'w', REQ_SCROLL_PAGE_UP },
764 { 's', REQ_SCROLL_PAGE_DOWN },
768 { '?', REQ_SEARCH_BACK },
769 { 'n', REQ_FIND_NEXT },
770 { 'N', REQ_FIND_PREV },
774 { 'z', REQ_STOP_LOADING },
775 { 'v', REQ_SHOW_VERSION },
776 { 'r', REQ_SCREEN_REDRAW },
777 { '.', REQ_TOGGLE_LINENO },
778 { 'g', REQ_TOGGLE_REV_GRAPH },
780 { 'u', REQ_STATUS_UPDATE },
783 /* Using the ncurses SIGWINCH handler. */
784 { KEY_RESIZE, REQ_SCREEN_RESIZE },
787 #define KEYMAP_INFO \
800 #define KEYMAP_(name) KEYMAP_##name
805 static struct int_map keymap_table[] = {
806 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
811 #define set_keymap(map, name) \
812 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
814 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
817 add_keybinding(enum keymap keymap, enum request request, int key)
819 struct keybinding *keybinding;
821 keybinding = calloc(1, sizeof(*keybinding));
823 die("Failed to allocate keybinding");
825 keybinding->alias = key;
826 keybinding->request = request;
827 keybinding->next = keybindings[keymap];
828 keybindings[keymap] = keybinding;
831 /* Looks for a key binding first in the given map, then in the generic map, and
832 * lastly in the default keybindings. */
834 get_keybinding(enum keymap keymap, int key)
836 struct keybinding *kbd;
839 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
840 if (kbd->alias == key)
843 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
844 if (kbd->alias == key)
847 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
848 if (default_keybindings[i].alias == key)
849 return default_keybindings[i].request;
851 return (enum request) key;
860 static struct key key_table[] = {
861 { "Enter", KEY_RETURN },
863 { "Backspace", KEY_BACKSPACE },
865 { "Escape", KEY_ESC },
866 { "Left", KEY_LEFT },
867 { "Right", KEY_RIGHT },
869 { "Down", KEY_DOWN },
870 { "Insert", KEY_IC },
871 { "Delete", KEY_DC },
873 { "Home", KEY_HOME },
875 { "PageUp", KEY_PPAGE },
876 { "PageDown", KEY_NPAGE },
886 { "F10", KEY_F(10) },
887 { "F11", KEY_F(11) },
888 { "F12", KEY_F(12) },
892 get_key_value(const char *name)
896 for (i = 0; i < ARRAY_SIZE(key_table); i++)
897 if (!strcasecmp(key_table[i].name, name))
898 return key_table[i].value;
900 if (strlen(name) == 1 && isprint(*name))
907 get_key(enum request request)
909 static char buf[BUFSIZ];
910 static char key_char[] = "'X'";
917 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
918 struct keybinding *keybinding = &default_keybindings[i];
922 if (keybinding->request != request)
925 for (key = 0; key < ARRAY_SIZE(key_table); key++)
926 if (key_table[key].value == keybinding->alias)
927 seq = key_table[key].name;
930 keybinding->alias < 127 &&
931 isprint(keybinding->alias)) {
932 key_char[1] = (char) keybinding->alias;
939 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
940 return "Too many keybindings!";
949 * User config file handling.
952 static struct int_map color_map[] = {
953 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
965 #define set_color(color, name) \
966 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
968 static struct int_map attr_map[] = {
969 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
979 #define set_attribute(attr, name) \
980 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
982 static int config_lineno;
983 static bool config_errors;
984 static char *config_msg;
986 /* Wants: object fgcolor bgcolor [attr] */
988 option_color_command(int argc, char *argv[])
990 struct line_info *info;
992 if (argc != 3 && argc != 4) {
993 config_msg = "Wrong number of arguments given to color command";
997 info = get_line_info(argv[0], strlen(argv[0]));
999 config_msg = "Unknown color name";
1003 if (set_color(&info->fg, argv[1]) == ERR ||
1004 set_color(&info->bg, argv[2]) == ERR) {
1005 config_msg = "Unknown color";
1009 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1010 config_msg = "Unknown attribute";
1017 /* Wants: name = value */
1019 option_set_command(int argc, char *argv[])
1022 config_msg = "Wrong number of arguments given to set command";
1026 if (strcmp(argv[1], "=")) {
1027 config_msg = "No value assigned";
1031 if (!strcmp(argv[0], "show-rev-graph")) {
1032 opt_rev_graph = (!strcmp(argv[2], "1") ||
1033 !strcmp(argv[2], "true") ||
1034 !strcmp(argv[2], "yes"));
1038 if (!strcmp(argv[0], "line-number-interval")) {
1039 opt_num_interval = atoi(argv[2]);
1043 if (!strcmp(argv[0], "tab-size")) {
1044 opt_tab_size = atoi(argv[2]);
1048 if (!strcmp(argv[0], "commit-encoding")) {
1049 char *arg = argv[2];
1050 int delimiter = *arg;
1053 switch (delimiter) {
1056 for (arg++, i = 0; arg[i]; i++)
1057 if (arg[i] == delimiter) {
1062 string_ncopy(opt_encoding, arg, strlen(arg));
1067 config_msg = "Unknown variable name";
1071 /* Wants: mode request key */
1073 option_bind_command(int argc, char *argv[])
1075 enum request request;
1080 config_msg = "Wrong number of arguments given to bind command";
1084 if (set_keymap(&keymap, argv[0]) == ERR) {
1085 config_msg = "Unknown key map";
1089 key = get_key_value(argv[1]);
1091 config_msg = "Unknown key";
1095 request = get_request(argv[2]);
1096 if (request == REQ_UNKNOWN) {
1097 config_msg = "Unknown request name";
1101 add_keybinding(keymap, request, key);
1107 set_option(char *opt, char *value)
1114 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1115 argv[argc++] = value;
1122 while (isspace(*value))
1126 if (!strcmp(opt, "color"))
1127 return option_color_command(argc, argv);
1129 if (!strcmp(opt, "set"))
1130 return option_set_command(argc, argv);
1132 if (!strcmp(opt, "bind"))
1133 return option_bind_command(argc, argv);
1135 config_msg = "Unknown option command";
1140 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1145 config_msg = "Internal error";
1147 /* Check for comment markers, since read_properties() will
1148 * only ensure opt and value are split at first " \t". */
1149 optlen = strcspn(opt, "#");
1153 if (opt[optlen] != 0) {
1154 config_msg = "No option value";
1158 /* Look for comment endings in the value. */
1159 size_t len = strcspn(value, "#");
1161 if (len < valuelen) {
1163 value[valuelen] = 0;
1166 status = set_option(opt, value);
1169 if (status == ERR) {
1170 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1171 config_lineno, (int) optlen, opt, config_msg);
1172 config_errors = TRUE;
1175 /* Always keep going if errors are encountered. */
1182 char *home = getenv("HOME");
1183 char buf[SIZEOF_STR];
1187 config_errors = FALSE;
1189 if (!home || !string_format(buf, "%s/.tigrc", home))
1192 /* It's ok that the file doesn't exist. */
1193 file = fopen(buf, "r");
1197 if (read_properties(file, " \t", read_option) == ERR ||
1198 config_errors == TRUE)
1199 fprintf(stderr, "Errors while loading %s.\n", buf);
1212 /* The display array of active views and the index of the current view. */
1213 static struct view *display[2];
1214 static unsigned int current_view;
1216 /* Reading from the prompt? */
1217 static bool input_mode = FALSE;
1219 #define foreach_displayed_view(view, i) \
1220 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1222 #define displayed_views() (display[1] != NULL ? 2 : 1)
1224 /* Current head and commit ID */
1225 static char ref_blob[SIZEOF_REF] = "";
1226 static char ref_commit[SIZEOF_REF] = "HEAD";
1227 static char ref_head[SIZEOF_REF] = "HEAD";
1230 const char *name; /* View name */
1231 const char *cmd_fmt; /* Default command line format */
1232 const char *cmd_env; /* Command line set via environment */
1233 const char *id; /* Points to either of ref_{head,commit,blob} */
1235 struct view_ops *ops; /* View operations */
1237 enum keymap keymap; /* What keymap does this view have */
1239 char cmd[SIZEOF_STR]; /* Command buffer */
1240 char ref[SIZEOF_REF]; /* Hovered commit reference */
1241 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1243 int height, width; /* The width and height of the main window */
1244 WINDOW *win; /* The main window */
1245 WINDOW *title; /* The title window living below the main window */
1248 unsigned long offset; /* Offset of the window top */
1249 unsigned long lineno; /* Current line number */
1252 char grep[SIZEOF_STR]; /* Search string */
1253 regex_t *regex; /* Pre-compiled regex */
1255 /* If non-NULL, points to the view that opened this view. If this view
1256 * is closed tig will switch back to the parent view. */
1257 struct view *parent;
1260 unsigned long lines; /* Total number of lines */
1261 struct line *line; /* Line index */
1262 unsigned long line_size;/* Total number of allocated lines */
1263 unsigned int digits; /* Number of digits in the lines member. */
1271 /* What type of content being displayed. Used in the title bar. */
1273 /* Open and reads in all view content. */
1274 bool (*open)(struct view *view);
1275 /* Read one line; updates view->line. */
1276 bool (*read)(struct view *view, char *data);
1277 /* Draw one line; @lineno must be < view->height. */
1278 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1279 /* Depending on view handle a special requests. */
1280 enum request (*request)(struct view *view, enum request request, struct line *line);
1281 /* Search for regex in a line. */
1282 bool (*grep)(struct view *view, struct line *line);
1284 void (*select)(struct view *view, struct line *line);
1287 static struct view_ops pager_ops;
1288 static struct view_ops main_ops;
1289 static struct view_ops tree_ops;
1290 static struct view_ops blob_ops;
1291 static struct view_ops help_ops;
1292 static struct view_ops status_ops;
1293 static struct view_ops stage_ops;
1295 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1296 { name, cmd, #env, ref, ops, map}
1298 #define VIEW_(id, name, ops, ref) \
1299 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1302 static struct view views[] = {
1303 VIEW_(MAIN, "main", &main_ops, ref_head),
1304 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1305 VIEW_(LOG, "log", &pager_ops, ref_head),
1306 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1307 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1308 VIEW_(HELP, "help", &help_ops, ""),
1309 VIEW_(PAGER, "pager", &pager_ops, "stdin"),
1310 VIEW_(STATUS, "status", &status_ops, ""),
1311 VIEW_(STAGE, "stage", &stage_ops, ""),
1314 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1316 #define foreach_view(view, i) \
1317 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1319 #define view_is_displayed(view) \
1320 (view == display[0] || view == display[1])
1323 draw_view_line(struct view *view, unsigned int lineno)
1326 bool selected = (view->offset + lineno == view->lineno);
1329 assert(view_is_displayed(view));
1331 if (view->offset + lineno >= view->lines)
1334 line = &view->line[view->offset + lineno];
1337 line->selected = TRUE;
1338 view->ops->select(view, line);
1339 } else if (line->selected) {
1340 line->selected = FALSE;
1341 wmove(view->win, lineno, 0);
1342 wclrtoeol(view->win);
1345 scrollok(view->win, FALSE);
1346 draw_ok = view->ops->draw(view, line, lineno, selected);
1347 scrollok(view->win, TRUE);
1353 redraw_view_from(struct view *view, int lineno)
1355 assert(0 <= lineno && lineno < view->height);
1357 for (; lineno < view->height; lineno++) {
1358 if (!draw_view_line(view, lineno))
1362 redrawwin(view->win);
1364 wnoutrefresh(view->win);
1366 wrefresh(view->win);
1370 redraw_view(struct view *view)
1373 redraw_view_from(view, 0);
1378 update_view_title(struct view *view)
1380 char buf[SIZEOF_STR];
1381 char state[SIZEOF_STR];
1382 size_t bufpos = 0, statelen = 0;
1384 assert(view_is_displayed(view));
1386 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1387 unsigned int view_lines = view->offset + view->height;
1388 unsigned int lines = view->lines
1389 ? MIN(view_lines, view->lines) * 100 / view->lines
1392 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1399 time_t secs = time(NULL) - view->start_time;
1401 /* Three git seconds are a long time ... */
1403 string_format_from(state, &statelen, " %lds", secs);
1407 string_format_from(buf, &bufpos, "[%s]", view->name);
1408 if (*view->ref && bufpos < view->width) {
1409 size_t refsize = strlen(view->ref);
1410 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1412 if (minsize < view->width)
1413 refsize = view->width - minsize + 7;
1414 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1417 if (statelen && bufpos < view->width) {
1418 string_format_from(buf, &bufpos, " %s", state);
1421 if (view == display[current_view])
1422 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1424 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1426 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1427 wclrtoeol(view->title);
1428 wmove(view->title, 0, view->width - 1);
1431 wnoutrefresh(view->title);
1433 wrefresh(view->title);
1437 resize_display(void)
1440 struct view *base = display[0];
1441 struct view *view = display[1] ? display[1] : display[0];
1443 /* Setup window dimensions */
1445 getmaxyx(stdscr, base->height, base->width);
1447 /* Make room for the status window. */
1451 /* Horizontal split. */
1452 view->width = base->width;
1453 view->height = SCALE_SPLIT_VIEW(base->height);
1454 base->height -= view->height;
1456 /* Make room for the title bar. */
1460 /* Make room for the title bar. */
1465 foreach_displayed_view (view, i) {
1467 view->win = newwin(view->height, 0, offset, 0);
1469 die("Failed to create %s view", view->name);
1471 scrollok(view->win, TRUE);
1473 view->title = newwin(1, 0, offset + view->height, 0);
1475 die("Failed to create title window");
1478 wresize(view->win, view->height, view->width);
1479 mvwin(view->win, offset, 0);
1480 mvwin(view->title, offset + view->height, 0);
1483 offset += view->height + 1;
1488 redraw_display(void)
1493 foreach_displayed_view (view, i) {
1495 update_view_title(view);
1500 update_display_cursor(struct view *view)
1502 /* Move the cursor to the right-most column of the cursor line.
1504 * XXX: This could turn out to be a bit expensive, but it ensures that
1505 * the cursor does not jump around. */
1507 wmove(view->win, view->lineno - view->offset, view->width - 1);
1508 wrefresh(view->win);
1516 /* Scrolling backend */
1518 do_scroll_view(struct view *view, int lines)
1520 bool redraw_current_line = FALSE;
1522 /* The rendering expects the new offset. */
1523 view->offset += lines;
1525 assert(0 <= view->offset && view->offset < view->lines);
1528 /* Move current line into the view. */
1529 if (view->lineno < view->offset) {
1530 view->lineno = view->offset;
1531 redraw_current_line = TRUE;
1532 } else if (view->lineno >= view->offset + view->height) {
1533 view->lineno = view->offset + view->height - 1;
1534 redraw_current_line = TRUE;
1537 assert(view->offset <= view->lineno && view->lineno < view->lines);
1539 /* Redraw the whole screen if scrolling is pointless. */
1540 if (view->height < ABS(lines)) {
1544 int line = lines > 0 ? view->height - lines : 0;
1545 int end = line + ABS(lines);
1547 wscrl(view->win, lines);
1549 for (; line < end; line++) {
1550 if (!draw_view_line(view, line))
1554 if (redraw_current_line)
1555 draw_view_line(view, view->lineno - view->offset);
1558 redrawwin(view->win);
1559 wrefresh(view->win);
1563 /* Scroll frontend */
1565 scroll_view(struct view *view, enum request request)
1569 assert(view_is_displayed(view));
1572 case REQ_SCROLL_PAGE_DOWN:
1573 lines = view->height;
1574 case REQ_SCROLL_LINE_DOWN:
1575 if (view->offset + lines > view->lines)
1576 lines = view->lines - view->offset;
1578 if (lines == 0 || view->offset + view->height >= view->lines) {
1579 report("Cannot scroll beyond the last line");
1584 case REQ_SCROLL_PAGE_UP:
1585 lines = view->height;
1586 case REQ_SCROLL_LINE_UP:
1587 if (lines > view->offset)
1588 lines = view->offset;
1591 report("Cannot scroll beyond the first line");
1599 die("request %d not handled in switch", request);
1602 do_scroll_view(view, lines);
1607 move_view(struct view *view, enum request request)
1609 int scroll_steps = 0;
1613 case REQ_MOVE_FIRST_LINE:
1614 steps = -view->lineno;
1617 case REQ_MOVE_LAST_LINE:
1618 steps = view->lines - view->lineno - 1;
1621 case REQ_MOVE_PAGE_UP:
1622 steps = view->height > view->lineno
1623 ? -view->lineno : -view->height;
1626 case REQ_MOVE_PAGE_DOWN:
1627 steps = view->lineno + view->height >= view->lines
1628 ? view->lines - view->lineno - 1 : view->height;
1640 die("request %d not handled in switch", request);
1643 if (steps <= 0 && view->lineno == 0) {
1644 report("Cannot move beyond the first line");
1647 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1648 report("Cannot move beyond the last line");
1652 /* Move the current line */
1653 view->lineno += steps;
1654 assert(0 <= view->lineno && view->lineno < view->lines);
1656 /* Check whether the view needs to be scrolled */
1657 if (view->lineno < view->offset ||
1658 view->lineno >= view->offset + view->height) {
1659 scroll_steps = steps;
1660 if (steps < 0 && -steps > view->offset) {
1661 scroll_steps = -view->offset;
1663 } else if (steps > 0) {
1664 if (view->lineno == view->lines - 1 &&
1665 view->lines > view->height) {
1666 scroll_steps = view->lines - view->offset - 1;
1667 if (scroll_steps >= view->height)
1668 scroll_steps -= view->height - 1;
1673 if (!view_is_displayed(view)) {
1674 view->offset += scroll_steps;
1675 assert(0 <= view->offset && view->offset < view->lines);
1676 view->ops->select(view, &view->line[view->lineno]);
1680 /* Repaint the old "current" line if we be scrolling */
1681 if (ABS(steps) < view->height)
1682 draw_view_line(view, view->lineno - steps - view->offset);
1685 do_scroll_view(view, scroll_steps);
1689 /* Draw the current line */
1690 draw_view_line(view, view->lineno - view->offset);
1692 redrawwin(view->win);
1693 wrefresh(view->win);
1702 static void search_view(struct view *view, enum request request);
1705 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1707 assert(view_is_displayed(view));
1709 if (!view->ops->grep(view, line))
1712 if (lineno - view->offset >= view->height) {
1713 view->offset = lineno;
1714 view->lineno = lineno;
1718 unsigned long old_lineno = view->lineno - view->offset;
1720 view->lineno = lineno;
1721 draw_view_line(view, old_lineno);
1723 draw_view_line(view, view->lineno - view->offset);
1724 redrawwin(view->win);
1725 wrefresh(view->win);
1728 report("Line %ld matches '%s'", lineno + 1, view->grep);
1733 find_next(struct view *view, enum request request)
1735 unsigned long lineno = view->lineno;
1740 report("No previous search");
1742 search_view(view, request);
1752 case REQ_SEARCH_BACK:
1761 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1762 lineno += direction;
1764 /* Note, lineno is unsigned long so will wrap around in which case it
1765 * will become bigger than view->lines. */
1766 for (; lineno < view->lines; lineno += direction) {
1767 struct line *line = &view->line[lineno];
1769 if (find_next_line(view, lineno, line))
1773 report("No match found for '%s'", view->grep);
1777 search_view(struct view *view, enum request request)
1782 regfree(view->regex);
1785 view->regex = calloc(1, sizeof(*view->regex));
1790 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1791 if (regex_err != 0) {
1792 char buf[SIZEOF_STR] = "unknown error";
1794 regerror(regex_err, view->regex, buf, sizeof(buf));
1795 report("Search failed: %s", buf);
1799 string_copy(view->grep, opt_search);
1801 find_next(view, request);
1805 * Incremental updating
1809 end_update(struct view *view)
1813 set_nonblocking_input(FALSE);
1814 if (view->pipe == stdin)
1822 begin_update(struct view *view)
1828 string_copy(view->cmd, opt_cmd);
1830 /* When running random commands, initially show the
1831 * command in the title. However, it maybe later be
1832 * overwritten if a commit line is selected. */
1833 if (view == VIEW(REQ_VIEW_PAGER))
1834 string_copy(view->ref, view->cmd);
1838 } else if (view == VIEW(REQ_VIEW_TREE)) {
1839 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1840 char path[SIZEOF_STR];
1842 if (strcmp(view->vid, view->id))
1843 opt_path[0] = path[0] = 0;
1844 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
1847 if (!string_format(view->cmd, format, view->id, path))
1851 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1852 const char *id = view->id;
1854 if (!string_format(view->cmd, format, id, id, id, id, id))
1857 /* Put the current ref_* value to the view title ref
1858 * member. This is needed by the blob view. Most other
1859 * views sets it automatically after loading because the
1860 * first line is a commit line. */
1861 string_copy_rev(view->ref, view->id);
1864 /* Special case for the pager view. */
1866 view->pipe = opt_pipe;
1869 view->pipe = popen(view->cmd, "r");
1875 set_nonblocking_input(TRUE);
1880 string_copy_rev(view->vid, view->id);
1885 for (i = 0; i < view->lines; i++)
1886 if (view->line[i].data)
1887 free(view->line[i].data);
1893 view->start_time = time(NULL);
1898 static struct line *
1899 realloc_lines(struct view *view, size_t line_size)
1901 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1907 view->line_size = line_size;
1912 update_view(struct view *view)
1914 char in_buffer[BUFSIZ];
1915 char out_buffer[BUFSIZ * 2];
1917 /* The number of lines to read. If too low it will cause too much
1918 * redrawing (and possible flickering), if too high responsiveness
1920 unsigned long lines = view->height;
1921 int redraw_from = -1;
1926 /* Only redraw if lines are visible. */
1927 if (view->offset + view->height >= view->lines)
1928 redraw_from = view->lines - view->offset;
1930 /* FIXME: This is probably not perfect for backgrounded views. */
1931 if (!realloc_lines(view, view->lines + lines))
1934 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1935 size_t linelen = strlen(line);
1938 line[linelen - 1] = 0;
1940 if (opt_iconv != ICONV_NONE) {
1941 ICONV_INBUF_TYPE inbuf = line;
1942 size_t inlen = linelen;
1944 char *outbuf = out_buffer;
1945 size_t outlen = sizeof(out_buffer);
1949 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1950 if (ret != (size_t) -1) {
1952 linelen = strlen(out_buffer);
1956 if (!view->ops->read(view, line))
1966 lines = view->lines;
1967 for (digits = 0; lines; digits++)
1970 /* Keep the displayed view in sync with line number scaling. */
1971 if (digits != view->digits) {
1972 view->digits = digits;
1977 if (!view_is_displayed(view))
1980 if (view == VIEW(REQ_VIEW_TREE)) {
1981 /* Clear the view and redraw everything since the tree sorting
1982 * might have rearranged things. */
1985 } else if (redraw_from >= 0) {
1986 /* If this is an incremental update, redraw the previous line
1987 * since for commits some members could have changed when
1988 * loading the main view. */
1989 if (redraw_from > 0)
1992 /* Since revision graph visualization requires knowledge
1993 * about the parent commit, it causes a further one-off
1994 * needed to be redrawn for incremental updates. */
1995 if (redraw_from > 0 && opt_rev_graph)
1998 /* Incrementally draw avoids flickering. */
1999 redraw_view_from(view, redraw_from);
2002 /* Update the title _after_ the redraw so that if the redraw picks up a
2003 * commit reference in view->ref it'll be available here. */
2004 update_view_title(view);
2007 if (ferror(view->pipe)) {
2008 report("Failed to read: %s", strerror(errno));
2011 } else if (feof(view->pipe)) {
2019 report("Allocation failure");
2022 view->ops->read(view, NULL);
2027 static struct line *
2028 add_line_data(struct view *view, void *data, enum line_type type)
2030 struct line *line = &view->line[view->lines++];
2032 memset(line, 0, sizeof(*line));
2039 static struct line *
2040 add_line_text(struct view *view, char *data, enum line_type type)
2043 data = strdup(data);
2045 return data ? add_line_data(view, data, type) : NULL;
2054 OPEN_DEFAULT = 0, /* Use default view switching. */
2055 OPEN_SPLIT = 1, /* Split current view. */
2056 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2057 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2061 open_view(struct view *prev, enum request request, enum open_flags flags)
2063 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2064 bool split = !!(flags & OPEN_SPLIT);
2065 bool reload = !!(flags & OPEN_RELOAD);
2066 struct view *view = VIEW(request);
2067 int nviews = displayed_views();
2068 struct view *base_view = display[0];
2070 if (view == prev && nviews == 1 && !reload) {
2071 report("Already in %s view", view->name);
2075 if (view->ops->open) {
2076 if (!view->ops->open(view)) {
2077 report("Failed to load %s view", view->name);
2081 } else if ((reload || strcmp(view->vid, view->id)) &&
2082 !begin_update(view)) {
2083 report("Failed to load %s view", view->name);
2092 /* Maximize the current view. */
2093 memset(display, 0, sizeof(display));
2095 display[current_view] = view;
2098 /* Resize the view when switching between split- and full-screen,
2099 * or when switching between two different full-screen views. */
2100 if (nviews != displayed_views() ||
2101 (nviews == 1 && base_view != display[0]))
2104 if (split && prev->lineno - prev->offset >= prev->height) {
2105 /* Take the title line into account. */
2106 int lines = prev->lineno - prev->offset - prev->height + 1;
2108 /* Scroll the view that was split if the current line is
2109 * outside the new limited view. */
2110 do_scroll_view(prev, lines);
2113 if (prev && view != prev) {
2114 if (split && !backgrounded) {
2115 /* "Blur" the previous view. */
2116 update_view_title(prev);
2119 view->parent = prev;
2122 if (view->pipe && view->lines == 0) {
2123 /* Clear the old view and let the incremental updating refill
2132 /* If the view is backgrounded the above calls to report()
2133 * won't redraw the view title. */
2135 update_view_title(view);
2139 open_editor(struct view *view, char *file)
2141 char cmd[SIZEOF_STR];
2142 char file_sq[SIZEOF_STR];
2145 editor = getenv("GIT_EDITOR");
2146 if (!editor && *opt_editor)
2147 editor = opt_editor;
2149 editor = getenv("VISUAL");
2151 editor = getenv("EDITOR");
2155 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2156 string_format(cmd, "%s %s", editor, file_sq)) {
2157 def_prog_mode(); /* save current tty modes */
2158 endwin(); /* restore original tty modes */
2166 * User request switch noodle
2170 view_driver(struct view *view, enum request request)
2174 if (view && view->lines) {
2175 request = view->ops->request(view, request, &view->line[view->lineno]);
2176 if (request == REQ_NONE)
2183 case REQ_MOVE_PAGE_UP:
2184 case REQ_MOVE_PAGE_DOWN:
2185 case REQ_MOVE_FIRST_LINE:
2186 case REQ_MOVE_LAST_LINE:
2187 move_view(view, request);
2190 case REQ_SCROLL_LINE_DOWN:
2191 case REQ_SCROLL_LINE_UP:
2192 case REQ_SCROLL_PAGE_DOWN:
2193 case REQ_SCROLL_PAGE_UP:
2194 scroll_view(view, request);
2199 report("No file chosen, press %s to open tree view",
2200 get_key(REQ_VIEW_TREE));
2203 open_view(view, request, OPEN_DEFAULT);
2206 case REQ_VIEW_PAGER:
2207 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2208 report("No pager content, press %s to run command from prompt",
2209 get_key(REQ_PROMPT));
2212 open_view(view, request, OPEN_DEFAULT);
2215 case REQ_VIEW_STAGE:
2216 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2217 report("No stage content, press %s to open the status view and choose file",
2218 get_key(REQ_VIEW_STATUS));
2221 open_view(view, request, OPEN_DEFAULT);
2229 case REQ_VIEW_STATUS:
2230 open_view(view, request, OPEN_DEFAULT);
2235 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2237 if ((view == VIEW(REQ_VIEW_DIFF) &&
2238 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2239 (view == VIEW(REQ_VIEW_STAGE) &&
2240 view->parent == VIEW(REQ_VIEW_STATUS)) ||
2241 (view == VIEW(REQ_VIEW_BLOB) &&
2242 view->parent == VIEW(REQ_VIEW_TREE))) {
2245 view = view->parent;
2246 line = view->lineno;
2247 move_view(view, request);
2248 if (view_is_displayed(view))
2249 update_view_title(view);
2250 if (line != view->lineno)
2251 view->ops->request(view, REQ_ENTER,
2252 &view->line[view->lineno]);
2255 move_view(view, request);
2261 int nviews = displayed_views();
2262 int next_view = (current_view + 1) % nviews;
2264 if (next_view == current_view) {
2265 report("Only one view is displayed");
2269 current_view = next_view;
2270 /* Blur out the title of the previous view. */
2271 update_view_title(view);
2275 case REQ_TOGGLE_LINENO:
2276 opt_line_number = !opt_line_number;
2280 case REQ_TOGGLE_REV_GRAPH:
2281 opt_rev_graph = !opt_rev_graph;
2286 /* Always reload^Wrerun commands from the prompt. */
2287 open_view(view, opt_request, OPEN_RELOAD);
2291 case REQ_SEARCH_BACK:
2292 search_view(view, request);
2297 find_next(view, request);
2300 case REQ_STOP_LOADING:
2301 for (i = 0; i < ARRAY_SIZE(views); i++) {
2304 report("Stopped loading the %s view", view->name),
2309 case REQ_SHOW_VERSION:
2310 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
2313 case REQ_SCREEN_RESIZE:
2316 case REQ_SCREEN_REDRAW:
2321 report("Nothing to edit");
2325 report("Nothing to enter");
2332 case REQ_VIEW_CLOSE:
2333 /* XXX: Mark closed views by letting view->parent point to the
2334 * view itself. Parents to closed view should never be
2337 view->parent->parent != view->parent) {
2338 memset(display, 0, sizeof(display));
2340 display[current_view] = view->parent;
2341 view->parent = view;
2351 /* An unknown key will show most commonly used commands. */
2352 report("Unknown key, press 'h' for help");
2365 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2367 char *text = line->data;
2368 enum line_type type = line->type;
2369 int textlen = strlen(text);
2372 wmove(view->win, lineno, 0);
2376 wchgat(view->win, -1, 0, type, NULL);
2379 attr = get_line_attr(type);
2380 wattrset(view->win, attr);
2382 if (opt_line_number || opt_tab_size < TABSIZE) {
2383 static char spaces[] = " ";
2384 int col_offset = 0, col = 0;
2386 if (opt_line_number) {
2387 unsigned long real_lineno = view->offset + lineno + 1;
2389 if (real_lineno == 1 ||
2390 (real_lineno % opt_num_interval) == 0) {
2391 wprintw(view->win, "%.*d", view->digits, real_lineno);
2394 waddnstr(view->win, spaces,
2395 MIN(view->digits, STRING_SIZE(spaces)));
2397 waddstr(view->win, ": ");
2398 col_offset = view->digits + 2;
2401 while (text && col_offset + col < view->width) {
2402 int cols_max = view->width - col_offset - col;
2406 if (*text == '\t') {
2408 assert(sizeof(spaces) > TABSIZE);
2410 cols = opt_tab_size - (col % opt_tab_size);
2413 text = strchr(text, '\t');
2414 cols = line ? text - pos : strlen(pos);
2417 waddnstr(view->win, pos, MIN(cols, cols_max));
2422 int col = 0, pos = 0;
2424 for (; pos < textlen && col < view->width; pos++, col++)
2425 if (text[pos] == '\t')
2426 col += TABSIZE - (col % TABSIZE) - 1;
2428 waddnstr(view->win, text, pos);
2435 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2437 char refbuf[SIZEOF_STR];
2441 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2444 pipe = popen(refbuf, "r");
2448 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2449 ref = chomp_string(ref);
2455 /* This is the only fatal call, since it can "corrupt" the buffer. */
2456 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2463 add_pager_refs(struct view *view, struct line *line)
2465 char buf[SIZEOF_STR];
2466 char *commit_id = line->data + STRING_SIZE("commit ");
2468 size_t bufpos = 0, refpos = 0;
2469 const char *sep = "Refs: ";
2470 bool is_tag = FALSE;
2472 assert(line->type == LINE_COMMIT);
2474 refs = get_refs(commit_id);
2476 if (view == VIEW(REQ_VIEW_DIFF))
2477 goto try_add_describe_ref;
2482 struct ref *ref = refs[refpos];
2483 char *fmt = ref->tag ? "%s[%s]" :
2484 ref->remote ? "%s<%s>" : "%s%s";
2486 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2491 } while (refs[refpos++]->next);
2493 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2494 try_add_describe_ref:
2495 /* Add <tag>-g<commit_id> "fake" reference. */
2496 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2503 if (!realloc_lines(view, view->line_size + 1))
2506 add_line_text(view, buf, LINE_PP_REFS);
2510 pager_read(struct view *view, char *data)
2517 line = add_line_text(view, data, get_line_type(data));
2521 if (line->type == LINE_COMMIT &&
2522 (view == VIEW(REQ_VIEW_DIFF) ||
2523 view == VIEW(REQ_VIEW_LOG)))
2524 add_pager_refs(view, line);
2530 pager_request(struct view *view, enum request request, struct line *line)
2534 if (request != REQ_ENTER)
2537 if (line->type == LINE_COMMIT &&
2538 (view == VIEW(REQ_VIEW_LOG) ||
2539 view == VIEW(REQ_VIEW_PAGER))) {
2540 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2544 /* Always scroll the view even if it was split. That way
2545 * you can use Enter to scroll through the log view and
2546 * split open each commit diff. */
2547 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2549 /* FIXME: A minor workaround. Scrolling the view will call report("")
2550 * but if we are scrolling a non-current view this won't properly
2551 * update the view title. */
2553 update_view_title(view);
2559 pager_grep(struct view *view, struct line *line)
2562 char *text = line->data;
2567 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2574 pager_select(struct view *view, struct line *line)
2576 if (line->type == LINE_COMMIT) {
2577 char *text = line->data + STRING_SIZE("commit ");
2579 if (view != VIEW(REQ_VIEW_PAGER))
2580 string_copy_rev(view->ref, text);
2581 string_copy_rev(ref_commit, text);
2585 static struct view_ops pager_ops = {
2601 help_open(struct view *view)
2604 int lines = ARRAY_SIZE(req_info) + 2;
2607 if (view->lines > 0)
2610 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2611 if (!req_info[i].request)
2614 view->line = calloc(lines, sizeof(*view->line));
2618 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2620 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2623 if (!req_info[i].request) {
2624 add_line_text(view, "", LINE_DEFAULT);
2625 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2629 key = get_key(req_info[i].request);
2630 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
2633 add_line_text(view, buf, LINE_DEFAULT);
2639 static struct view_ops help_ops = {
2654 struct tree_stack_entry {
2655 struct tree_stack_entry *prev; /* Entry below this in the stack */
2656 unsigned long lineno; /* Line number to restore */
2657 char *name; /* Position of name in opt_path */
2660 /* The top of the path stack. */
2661 static struct tree_stack_entry *tree_stack = NULL;
2662 unsigned long tree_lineno = 0;
2665 pop_tree_stack_entry(void)
2667 struct tree_stack_entry *entry = tree_stack;
2669 tree_lineno = entry->lineno;
2671 tree_stack = entry->prev;
2676 push_tree_stack_entry(char *name, unsigned long lineno)
2678 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
2679 size_t pathlen = strlen(opt_path);
2684 entry->prev = tree_stack;
2685 entry->name = opt_path + pathlen;
2688 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
2689 pop_tree_stack_entry();
2693 /* Move the current line to the first tree entry. */
2695 entry->lineno = lineno;
2698 /* Parse output from git-ls-tree(1):
2700 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2701 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2702 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2703 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2706 #define SIZEOF_TREE_ATTR \
2707 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2709 #define TREE_UP_FORMAT "040000 tree %s\t.."
2712 tree_compare_entry(enum line_type type1, char *name1,
2713 enum line_type type2, char *name2)
2715 if (type1 != type2) {
2716 if (type1 == LINE_TREE_DIR)
2721 return strcmp(name1, name2);
2725 tree_read(struct view *view, char *text)
2727 size_t textlen = text ? strlen(text) : 0;
2728 char buf[SIZEOF_STR];
2730 enum line_type type;
2731 bool first_read = view->lines == 0;
2733 if (textlen <= SIZEOF_TREE_ATTR)
2736 type = text[STRING_SIZE("100644 ")] == 't'
2737 ? LINE_TREE_DIR : LINE_TREE_FILE;
2740 /* Add path info line */
2741 if (!string_format(buf, "Directory path /%s", opt_path) ||
2742 !realloc_lines(view, view->line_size + 1) ||
2743 !add_line_text(view, buf, LINE_DEFAULT))
2746 /* Insert "link" to parent directory. */
2748 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2749 !realloc_lines(view, view->line_size + 1) ||
2750 !add_line_text(view, buf, LINE_TREE_DIR))
2755 /* Strip the path part ... */
2757 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2758 size_t striplen = strlen(opt_path);
2759 char *path = text + SIZEOF_TREE_ATTR;
2761 if (pathlen > striplen)
2762 memmove(path, path + striplen,
2763 pathlen - striplen + 1);
2766 /* Skip "Directory ..." and ".." line. */
2767 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2768 struct line *line = &view->line[pos];
2769 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2770 char *path2 = text + SIZEOF_TREE_ATTR;
2771 int cmp = tree_compare_entry(line->type, path1, type, path2);
2776 text = strdup(text);
2780 if (view->lines > pos)
2781 memmove(&view->line[pos + 1], &view->line[pos],
2782 (view->lines - pos) * sizeof(*line));
2784 line = &view->line[pos];
2791 if (!add_line_text(view, text, type))
2794 if (tree_lineno > view->lineno) {
2795 view->lineno = tree_lineno;
2803 tree_request(struct view *view, enum request request, struct line *line)
2805 enum open_flags flags;
2807 if (request != REQ_ENTER)
2810 /* Cleanup the stack if the tree view is at a different tree. */
2811 while (!*opt_path && tree_stack)
2812 pop_tree_stack_entry();
2814 switch (line->type) {
2816 /* Depending on whether it is a subdir or parent (updir?) link
2817 * mangle the path buffer. */
2818 if (line == &view->line[1] && *opt_path) {
2819 pop_tree_stack_entry();
2822 char *data = line->data;
2823 char *basename = data + SIZEOF_TREE_ATTR;
2825 push_tree_stack_entry(basename, view->lineno);
2828 /* Trees and subtrees share the same ID, so they are not not
2829 * unique like blobs. */
2830 flags = OPEN_RELOAD;
2831 request = REQ_VIEW_TREE;
2834 case LINE_TREE_FILE:
2835 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2836 request = REQ_VIEW_BLOB;
2843 open_view(view, request, flags);
2844 if (request == REQ_VIEW_TREE) {
2845 view->lineno = tree_lineno;
2852 tree_select(struct view *view, struct line *line)
2854 char *text = line->data + STRING_SIZE("100644 blob ");
2856 if (line->type == LINE_TREE_FILE) {
2857 string_copy_rev(ref_blob, text);
2859 } else if (line->type != LINE_TREE_DIR) {
2863 string_copy_rev(view->ref, text);
2866 static struct view_ops tree_ops = {
2877 blob_read(struct view *view, char *line)
2879 return add_line_text(view, line, LINE_DEFAULT);
2882 static struct view_ops blob_ops = {
2901 char rev[SIZEOF_REV];
2905 char rev[SIZEOF_REV];
2907 char name[SIZEOF_STR];
2910 static struct status stage_status;
2911 static enum line_type stage_line_type;
2913 /* Get fields from the diff line:
2914 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
2917 status_get_diff(struct status *file, char *buf, size_t bufsize)
2919 char *old_mode = buf + 1;
2920 char *new_mode = buf + 8;
2921 char *old_rev = buf + 15;
2922 char *new_rev = buf + 56;
2923 char *status = buf + 97;
2925 if (bufsize != 99 ||
2926 old_mode[-1] != ':' ||
2927 new_mode[-1] != ' ' ||
2928 old_rev[-1] != ' ' ||
2929 new_rev[-1] != ' ' ||
2933 file->status = *status;
2935 string_copy_rev(file->old.rev, old_rev);
2936 string_copy_rev(file->new.rev, new_rev);
2938 file->old.mode = strtoul(old_mode, NULL, 8);
2939 file->new.mode = strtoul(new_mode, NULL, 8);
2947 status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
2949 struct status *file = NULL;
2950 char buf[SIZEOF_STR * 4];
2954 pipe = popen(cmd, "r");
2958 add_line_data(view, NULL, type);
2960 while (!feof(pipe) && !ferror(pipe)) {
2964 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
2967 bufsize += readsize;
2969 /* Process while we have NUL chars. */
2970 while ((sep = memchr(buf, 0, bufsize))) {
2971 size_t sepsize = sep - buf + 1;
2974 if (!realloc_lines(view, view->line_size + 1))
2977 file = calloc(1, sizeof(*file));
2981 add_line_data(view, file, type);
2984 /* Parse diff info part. */
2988 } else if (!file->status) {
2989 if (!status_get_diff(file, buf, sepsize))
2993 memmove(buf, sep + 1, bufsize);
2995 sep = memchr(buf, 0, bufsize);
2998 sepsize = sep - buf + 1;
3001 /* git-ls-files just delivers a NUL separated
3002 * list of file names similar to the second half
3003 * of the git-diff-* output. */
3004 string_ncopy(file->name, buf, sepsize);
3006 memmove(buf, sep + 1, bufsize);
3017 if (!view->line[view->lines - 1].data)
3018 add_line_data(view, NULL, LINE_STAT_NONE);
3024 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --cached HEAD"
3025 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
3026 #define STATUS_LIST_OTHER_CMD \
3027 "git ls-files -z --others --exclude-per-directory=.gitignore"
3029 #define STATUS_DIFF_SHOW_CMD \
3030 "git diff --root --patch-with-stat --find-copies-harder -B -C %s -- %s 2>/dev/null"
3032 /* First parse staged info using git-diff-index(1), then parse unstaged
3033 * info using git-diff-files(1), and finally untracked files using
3034 * git-ls-files(1). */
3036 status_open(struct view *view)
3038 struct stat statbuf;
3039 char exclude[SIZEOF_STR];
3040 char cmd[SIZEOF_STR];
3043 for (i = 0; i < view->lines; i++)
3044 free(view->line[i].data);
3046 view->lines = view->line_size = 0;
3049 if (!realloc_lines(view, view->line_size + 6))
3052 if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
3055 string_copy(cmd, STATUS_LIST_OTHER_CMD);
3057 if (stat(exclude, &statbuf) >= 0) {
3058 size_t cmdsize = strlen(cmd);
3060 if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
3061 sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
3065 if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
3066 !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
3067 !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
3074 status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3076 struct status *status = line->data;
3078 wmove(view->win, lineno, 0);
3081 wattrset(view->win, get_line_attr(LINE_CURSOR));
3082 wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
3084 } else if (!status && line->type != LINE_STAT_NONE) {
3085 wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
3086 wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
3089 wattrset(view->win, get_line_attr(line->type));
3095 switch (line->type) {
3096 case LINE_STAT_STAGED:
3097 text = "Changes to be committed:";
3100 case LINE_STAT_UNSTAGED:
3101 text = "Changed but not updated:";
3104 case LINE_STAT_UNTRACKED:
3105 text = "Untracked files:";
3108 case LINE_STAT_NONE:
3109 text = " (no files)";
3116 waddstr(view->win, text);
3120 waddch(view->win, status->status);
3122 wattrset(view->win, A_NORMAL);
3123 wmove(view->win, lineno, 4);
3124 waddstr(view->win, status->name);
3130 status_enter(struct view *view, struct line *line)
3132 struct status *status = line->data;
3133 char path[SIZEOF_STR] = "";
3137 if (line->type == LINE_STAT_NONE ||
3138 (!status && line[1].type == LINE_STAT_NONE)) {
3139 report("No file to diff");
3143 if (status && sq_quote(path, 0, status->name) >= sizeof(path))
3147 line->type != LINE_STAT_UNTRACKED &&
3148 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
3151 switch (line->type) {
3152 case LINE_STAT_STAGED:
3153 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3157 info = "Staged changes to %s";
3159 info = "Staged changes";
3162 case LINE_STAT_UNSTAGED:
3163 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3167 info = "Unstaged changes to %s";
3169 info = "Unstaged changes";
3172 case LINE_STAT_UNTRACKED:
3178 report("No file to show");
3182 opt_pipe = fopen(status->name, "r");
3183 info = "Untracked file %s";
3190 open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_SPLIT);
3191 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
3193 stage_status = *status;
3195 memset(&stage_status, 0, sizeof(stage_status));
3198 stage_line_type = line->type;
3199 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.name);
3207 status_update_file(struct view *view, struct status *status, enum line_type type)
3209 char cmd[SIZEOF_STR];
3210 char buf[SIZEOF_STR];
3217 type != LINE_STAT_UNTRACKED &&
3218 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
3222 case LINE_STAT_STAGED:
3223 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
3229 string_add(cmd, cmdsize, "git update-index -z --index-info");
3232 case LINE_STAT_UNSTAGED:
3233 case LINE_STAT_UNTRACKED:
3234 if (!string_format_from(buf, &bufsize, "%s%c", status->name, 0))
3237 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
3244 pipe = popen(cmd, "w");
3248 while (!ferror(pipe) && written < bufsize) {
3249 written += fwrite(buf + written, 1, bufsize - written, pipe);
3254 if (written != bufsize)
3261 status_update(struct view *view)
3263 struct line *line = &view->line[view->lineno];
3265 assert(view->lines);
3268 while (++line < view->line + view->lines && line->data) {
3269 if (!status_update_file(view, line->data, line->type))
3270 report("Failed to update file status");
3273 if (!line[-1].data) {
3274 report("Nothing to update");
3278 } else if (!status_update_file(view, line->data, line->type)) {
3279 report("Failed to update file status");
3282 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
3286 status_request(struct view *view, enum request request, struct line *line)
3288 struct status *status = line->data;
3291 case REQ_STATUS_UPDATE:
3292 status_update(view);
3299 open_editor(view, status->name);
3303 status_enter(view, line);
3314 status_select(struct view *view, struct line *line)
3316 struct status *status = line->data;
3317 char file[SIZEOF_STR] = "all files";
3320 if (status && !string_format(file, "'%s'", status->name))
3323 if (!status && line[1].type == LINE_STAT_NONE)
3326 switch (line->type) {
3327 case LINE_STAT_STAGED:
3328 text = "Press %s to unstage %s for commit";
3331 case LINE_STAT_UNSTAGED:
3332 text = "Press %s to stage %s for commit";
3335 case LINE_STAT_UNTRACKED:
3336 text = "Press %s to stage %s for addition";
3339 case LINE_STAT_NONE:
3340 text = "Nothing to update";
3347 string_format(view->ref, text, get_key(REQ_STATUS_UPDATE), file);
3351 status_grep(struct view *view, struct line *line)
3353 struct status *status = line->data;
3354 enum { S_STATUS, S_NAME, S_END } state;
3361 for (state = S_STATUS; state < S_END; state++) {
3365 case S_NAME: text = status->name; break;
3367 buf[0] = status->status;
3375 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3382 static struct view_ops status_ops = {
3394 stage_diff_line(FILE *pipe, struct line *line)
3396 char *buf = line->data;
3397 size_t bufsize = strlen(buf);
3400 while (!ferror(pipe) && written < bufsize) {
3401 written += fwrite(buf + written, 1, bufsize - written, pipe);
3406 return written == bufsize;
3409 static struct line *
3410 stage_diff_hdr(struct view *view, struct line *line)
3412 int diff_hdr_dir = line->type == LINE_DIFF_CHUNK ? -1 : 1;
3413 struct line *diff_hdr;
3415 if (line->type == LINE_DIFF_CHUNK)
3416 diff_hdr = line - 1;
3418 diff_hdr = view->line + 1;
3420 while (diff_hdr > view->line && diff_hdr < view->line + view->lines) {
3421 if (diff_hdr->type == LINE_DIFF_HEADER)
3424 diff_hdr += diff_hdr_dir;
3431 stage_update_chunk(struct view *view, struct line *line)
3433 char cmd[SIZEOF_STR];
3435 struct line *diff_hdr, *diff_chunk, *diff_end;
3438 diff_hdr = stage_diff_hdr(view, line);
3443 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
3446 if (!string_format_from(cmd, &cmdsize,
3447 "git apply --cached %s - && "
3448 "git update-index -q --unmerged --refresh 2>/dev/null",
3449 stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
3452 pipe = popen(cmd, "w");
3456 diff_end = view->line + view->lines;
3457 if (line->type != LINE_DIFF_CHUNK) {
3458 diff_chunk = diff_hdr;
3461 for (diff_chunk = line + 1; diff_chunk < diff_end; diff_chunk++)
3462 if (diff_chunk->type == LINE_DIFF_CHUNK ||
3463 diff_chunk->type == LINE_DIFF_HEADER)
3464 diff_end = diff_chunk;
3468 while (diff_hdr->type != LINE_DIFF_CHUNK) {
3469 switch (diff_hdr->type) {
3470 case LINE_DIFF_HEADER:
3471 case LINE_DIFF_INDEX:
3481 if (!stage_diff_line(pipe, diff_hdr++)) {
3488 while (diff_chunk < diff_end && stage_diff_line(pipe, diff_chunk))
3493 if (diff_chunk != diff_end)
3500 stage_update(struct view *view, struct line *line)
3502 if (stage_line_type != LINE_STAT_UNTRACKED &&
3503 (line->type == LINE_DIFF_CHUNK || !stage_status.status)) {
3504 if (!stage_update_chunk(view, line)) {
3505 report("Failed to apply chunk");
3509 } else if (!status_update_file(view, &stage_status, stage_line_type)) {
3510 report("Failed to update file");
3514 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
3516 view = VIEW(REQ_VIEW_STATUS);
3517 if (view_is_displayed(view))
3518 status_enter(view, &view->line[view->lineno]);
3522 stage_request(struct view *view, enum request request, struct line *line)
3525 case REQ_STATUS_UPDATE:
3526 stage_update(view, line);
3530 if (!stage_status.name[0])
3533 open_editor(view, stage_status.name);
3537 pager_request(view, request, line);
3547 static struct view_ops stage_ops = {
3563 char id[SIZEOF_REV]; /* SHA1 ID. */
3564 char title[128]; /* First line of the commit message. */
3565 char author[75]; /* Author of the commit. */
3566 struct tm time; /* Date from the author ident. */
3567 struct ref **refs; /* Repository references. */
3568 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
3569 size_t graph_size; /* The width of the graph array. */
3572 /* Size of rev graph with no "padding" columns */
3573 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
3576 struct rev_graph *prev, *next, *parents;
3577 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
3579 struct commit *commit;
3583 /* Parents of the commit being visualized. */
3584 static struct rev_graph graph_parents[4];
3586 /* The current stack of revisions on the graph. */
3587 static struct rev_graph graph_stacks[4] = {
3588 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
3589 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
3590 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
3591 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
3595 graph_parent_is_merge(struct rev_graph *graph)
3597 return graph->parents->size > 1;
3601 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
3603 struct commit *commit = graph->commit;
3605 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
3606 commit->graph[commit->graph_size++] = symbol;
3610 done_rev_graph(struct rev_graph *graph)
3612 if (graph_parent_is_merge(graph) &&
3613 graph->pos < graph->size - 1 &&
3614 graph->next->size == graph->size + graph->parents->size - 1) {
3615 size_t i = graph->pos + graph->parents->size - 1;
3617 graph->commit->graph_size = i * 2;
3618 while (i < graph->next->size - 1) {
3619 append_to_rev_graph(graph, ' ');
3620 append_to_rev_graph(graph, '\\');
3625 graph->size = graph->pos = 0;
3626 graph->commit = NULL;
3627 memset(graph->parents, 0, sizeof(*graph->parents));
3631 push_rev_graph(struct rev_graph *graph, char *parent)
3635 /* "Collapse" duplicate parents lines.
3637 * FIXME: This needs to also update update the drawn graph but
3638 * for now it just serves as a method for pruning graph lines. */
3639 for (i = 0; i < graph->size; i++)
3640 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
3643 if (graph->size < SIZEOF_REVITEMS) {
3644 string_copy_rev(graph->rev[graph->size++], parent);
3649 get_rev_graph_symbol(struct rev_graph *graph)
3653 if (graph->parents->size == 0)
3654 symbol = REVGRAPH_INIT;
3655 else if (graph_parent_is_merge(graph))
3656 symbol = REVGRAPH_MERGE;
3657 else if (graph->pos >= graph->size)
3658 symbol = REVGRAPH_BRANCH;
3660 symbol = REVGRAPH_COMMIT;
3666 draw_rev_graph(struct rev_graph *graph)
3669 chtype separator, line;
3671 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
3672 static struct rev_filler fillers[] = {
3673 { ' ', REVGRAPH_LINE },
3678 chtype symbol = get_rev_graph_symbol(graph);
3679 struct rev_filler *filler;
3682 filler = &fillers[DEFAULT];
3684 for (i = 0; i < graph->pos; i++) {
3685 append_to_rev_graph(graph, filler->line);
3686 if (graph_parent_is_merge(graph->prev) &&
3687 graph->prev->pos == i)
3688 filler = &fillers[RSHARP];
3690 append_to_rev_graph(graph, filler->separator);
3693 /* Place the symbol for this revision. */
3694 append_to_rev_graph(graph, symbol);
3696 if (graph->prev->size > graph->size)
3697 filler = &fillers[RDIAG];
3699 filler = &fillers[DEFAULT];
3703 for (; i < graph->size; i++) {
3704 append_to_rev_graph(graph, filler->separator);
3705 append_to_rev_graph(graph, filler->line);
3706 if (graph_parent_is_merge(graph->prev) &&
3707 i < graph->prev->pos + graph->parents->size)
3708 filler = &fillers[RSHARP];
3709 if (graph->prev->size > graph->size)
3710 filler = &fillers[LDIAG];
3713 if (graph->prev->size > graph->size) {
3714 append_to_rev_graph(graph, filler->separator);
3715 if (filler->line != ' ')
3716 append_to_rev_graph(graph, filler->line);
3720 /* Prepare the next rev graph */
3722 prepare_rev_graph(struct rev_graph *graph)
3726 /* First, traverse all lines of revisions up to the active one. */
3727 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
3728 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
3731 push_rev_graph(graph->next, graph->rev[graph->pos]);
3734 /* Interleave the new revision parent(s). */
3735 for (i = 0; i < graph->parents->size; i++)
3736 push_rev_graph(graph->next, graph->parents->rev[i]);
3738 /* Lastly, put any remaining revisions. */
3739 for (i = graph->pos + 1; i < graph->size; i++)
3740 push_rev_graph(graph->next, graph->rev[i]);
3744 update_rev_graph(struct rev_graph *graph)
3746 /* If this is the finalizing update ... */
3748 prepare_rev_graph(graph);
3750 /* Graph visualization needs a one rev look-ahead,
3751 * so the first update doesn't visualize anything. */
3752 if (!graph->prev->commit)
3755 draw_rev_graph(graph->prev);
3756 done_rev_graph(graph->prev->prev);
3765 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3767 char buf[DATE_COLS + 1];
3768 struct commit *commit = line->data;
3769 enum line_type type;
3775 if (!*commit->author)
3778 wmove(view->win, lineno, col);
3782 wattrset(view->win, get_line_attr(type));
3783 wchgat(view->win, -1, 0, type, NULL);
3786 type = LINE_MAIN_COMMIT;
3787 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
3790 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
3791 waddnstr(view->win, buf, timelen);
3792 waddstr(view->win, " ");
3795 wmove(view->win, lineno, col);
3796 if (type != LINE_CURSOR)
3797 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
3800 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
3802 authorlen = strlen(commit->author);
3803 if (authorlen > AUTHOR_COLS - 2) {
3804 authorlen = AUTHOR_COLS - 2;
3810 waddnstr(view->win, commit->author, authorlen);
3811 if (type != LINE_CURSOR)
3812 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
3813 waddch(view->win, '~');
3815 waddstr(view->win, commit->author);
3819 if (type != LINE_CURSOR)
3820 wattrset(view->win, A_NORMAL);
3822 if (opt_rev_graph && commit->graph_size) {
3825 wmove(view->win, lineno, col);
3826 /* Using waddch() instead of waddnstr() ensures that
3827 * they'll be rendered correctly for the cursor line. */
3828 for (i = 0; i < commit->graph_size; i++)
3829 waddch(view->win, commit->graph[i]);
3831 waddch(view->win, ' ');
3832 col += commit->graph_size + 1;
3835 wmove(view->win, lineno, col);
3841 if (type == LINE_CURSOR)
3843 else if (commit->refs[i]->tag)
3844 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
3845 else if (commit->refs[i]->remote)
3846 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
3848 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3849 waddstr(view->win, "[");
3850 waddstr(view->win, commit->refs[i]->name);
3851 waddstr(view->win, "]");
3852 if (type != LINE_CURSOR)
3853 wattrset(view->win, A_NORMAL);
3854 waddstr(view->win, " ");
3855 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3856 } while (commit->refs[i++]->next);
3859 if (type != LINE_CURSOR)
3860 wattrset(view->win, get_line_attr(type));
3863 int titlelen = strlen(commit->title);
3865 if (col + titlelen > view->width)
3866 titlelen = view->width - col;
3868 waddnstr(view->win, commit->title, titlelen);
3874 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3876 main_read(struct view *view, char *line)
3878 static struct rev_graph *graph = graph_stacks;
3879 enum line_type type;
3880 struct commit *commit;
3883 update_rev_graph(graph);
3887 type = get_line_type(line);
3888 if (type == LINE_COMMIT) {
3889 commit = calloc(1, sizeof(struct commit));
3893 string_copy_rev(commit->id, line + STRING_SIZE("commit "));
3894 commit->refs = get_refs(commit->id);
3895 graph->commit = commit;
3896 add_line_data(view, commit, LINE_MAIN_COMMIT);
3902 commit = view->line[view->lines - 1].data;
3906 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
3911 /* Parse author lines where the name may be empty:
3912 * author <email@address.tld> 1138474660 +0100
3914 char *ident = line + STRING_SIZE("author ");
3915 char *nameend = strchr(ident, '<');
3916 char *emailend = strchr(ident, '>');
3918 if (!nameend || !emailend)
3921 update_rev_graph(graph);
3922 graph = graph->next;
3924 *nameend = *emailend = 0;
3925 ident = chomp_string(ident);
3927 ident = chomp_string(nameend + 1);
3932 string_ncopy(commit->author, ident, strlen(ident));
3934 /* Parse epoch and timezone */
3935 if (emailend[1] == ' ') {
3936 char *secs = emailend + 2;
3937 char *zone = strchr(secs, ' ');
3938 time_t time = (time_t) atol(secs);
3940 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3944 tz = ('0' - zone[1]) * 60 * 60 * 10;
3945 tz += ('0' - zone[2]) * 60 * 60;
3946 tz += ('0' - zone[3]) * 60;
3947 tz += ('0' - zone[4]) * 60;
3955 gmtime_r(&time, &commit->time);
3960 /* Fill in the commit title if it has not already been set. */
3961 if (commit->title[0])
3964 /* Require titles to start with a non-space character at the
3965 * offset used by git log. */
3966 if (strncmp(line, " ", 4))
3969 /* Well, if the title starts with a whitespace character,
3970 * try to be forgiving. Otherwise we end up with no title. */
3971 while (isspace(*line))
3975 /* FIXME: More graceful handling of titles; append "..." to
3976 * shortened titles, etc. */
3978 string_ncopy(commit->title, line, strlen(line));
3985 main_request(struct view *view, enum request request, struct line *line)
3987 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3989 if (request == REQ_ENTER)
3990 open_view(view, REQ_VIEW_DIFF, flags);
3998 main_grep(struct view *view, struct line *line)
4000 struct commit *commit = line->data;
4001 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
4002 char buf[DATE_COLS + 1];
4005 for (state = S_TITLE; state < S_END; state++) {
4009 case S_TITLE: text = commit->title; break;
4010 case S_AUTHOR: text = commit->author; break;
4012 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
4021 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4029 main_select(struct view *view, struct line *line)
4031 struct commit *commit = line->data;
4033 string_copy_rev(view->ref, commit->id);
4034 string_copy_rev(ref_commit, view->ref);
4037 static struct view_ops main_ops = {
4049 * Unicode / UTF-8 handling
4051 * NOTE: Much of the following code for dealing with unicode is derived from
4052 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
4053 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
4056 /* I've (over)annotated a lot of code snippets because I am not entirely
4057 * confident that the approach taken by this small UTF-8 interface is correct.
4061 unicode_width(unsigned long c)
4064 (c <= 0x115f /* Hangul Jamo */
4067 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
4069 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
4070 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
4071 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
4072 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
4073 || (c >= 0xffe0 && c <= 0xffe6)
4074 || (c >= 0x20000 && c <= 0x2fffd)
4075 || (c >= 0x30000 && c <= 0x3fffd)))
4081 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
4082 * Illegal bytes are set one. */
4083 static const unsigned char utf8_bytes[256] = {
4084 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,
4085 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,
4086 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,
4087 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,
4088 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,
4089 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,
4090 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,
4091 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,
4094 /* Decode UTF-8 multi-byte representation into a unicode character. */
4095 static inline unsigned long
4096 utf8_to_unicode(const char *string, size_t length)
4098 unsigned long unicode;
4102 unicode = string[0];
4105 unicode = (string[0] & 0x1f) << 6;
4106 unicode += (string[1] & 0x3f);
4109 unicode = (string[0] & 0x0f) << 12;
4110 unicode += ((string[1] & 0x3f) << 6);
4111 unicode += (string[2] & 0x3f);
4114 unicode = (string[0] & 0x0f) << 18;
4115 unicode += ((string[1] & 0x3f) << 12);
4116 unicode += ((string[2] & 0x3f) << 6);
4117 unicode += (string[3] & 0x3f);
4120 unicode = (string[0] & 0x0f) << 24;
4121 unicode += ((string[1] & 0x3f) << 18);
4122 unicode += ((string[2] & 0x3f) << 12);
4123 unicode += ((string[3] & 0x3f) << 6);
4124 unicode += (string[4] & 0x3f);
4127 unicode = (string[0] & 0x01) << 30;
4128 unicode += ((string[1] & 0x3f) << 24);
4129 unicode += ((string[2] & 0x3f) << 18);
4130 unicode += ((string[3] & 0x3f) << 12);
4131 unicode += ((string[4] & 0x3f) << 6);
4132 unicode += (string[5] & 0x3f);
4135 die("Invalid unicode length");
4138 /* Invalid characters could return the special 0xfffd value but NUL
4139 * should be just as good. */
4140 return unicode > 0xffff ? 0 : unicode;
4143 /* Calculates how much of string can be shown within the given maximum width
4144 * and sets trimmed parameter to non-zero value if all of string could not be
4147 * Additionally, adds to coloffset how many many columns to move to align with
4148 * the expected position. Takes into account how multi-byte and double-width
4149 * characters will effect the cursor position.
4151 * Returns the number of bytes to output from string to satisfy max_width. */
4153 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
4155 const char *start = string;
4156 const char *end = strchr(string, '\0');
4162 while (string < end) {
4163 int c = *(unsigned char *) string;
4164 unsigned char bytes = utf8_bytes[c];
4166 unsigned long unicode;
4168 if (string + bytes > end)
4171 /* Change representation to figure out whether
4172 * it is a single- or double-width character. */
4174 unicode = utf8_to_unicode(string, bytes);
4175 /* FIXME: Graceful handling of invalid unicode character. */
4179 ucwidth = unicode_width(unicode);
4181 if (width > max_width) {
4186 /* The column offset collects the differences between the
4187 * number of bytes encoding a character and the number of
4188 * columns will be used for rendering said character.
4190 * So if some character A is encoded in 2 bytes, but will be
4191 * represented on the screen using only 1 byte this will and up
4192 * adding 1 to the multi-byte column offset.
4194 * Assumes that no double-width character can be encoding in
4195 * less than two bytes. */
4196 if (bytes > ucwidth)
4197 mbwidth += bytes - ucwidth;
4202 *coloffset += mbwidth;
4204 return string - start;
4212 /* Whether or not the curses interface has been initialized. */
4213 static bool cursed = FALSE;
4215 /* The status window is used for polling keystrokes. */
4216 static WINDOW *status_win;
4218 static bool status_empty = TRUE;
4220 /* Update status and title window. */
4222 report(const char *msg, ...)
4224 struct view *view = display[current_view];
4229 if (!status_empty || *msg) {
4232 va_start(args, msg);
4234 wmove(status_win, 0, 0);
4236 vwprintw(status_win, msg, args);
4237 status_empty = FALSE;
4239 status_empty = TRUE;
4241 wclrtoeol(status_win);
4242 wrefresh(status_win);
4247 update_view_title(view);
4248 update_display_cursor(view);
4251 /* Controls when nodelay should be in effect when polling user input. */
4253 set_nonblocking_input(bool loading)
4255 static unsigned int loading_views;
4257 if ((loading == FALSE && loading_views-- == 1) ||
4258 (loading == TRUE && loading_views++ == 0))
4259 nodelay(status_win, loading);
4267 /* Initialize the curses library */
4268 if (isatty(STDIN_FILENO)) {
4269 cursed = !!initscr();
4271 /* Leave stdin and stdout alone when acting as a pager. */
4272 FILE *io = fopen("/dev/tty", "r+");
4275 die("Failed to open /dev/tty");
4276 cursed = !!newterm(NULL, io, io);
4280 die("Failed to initialize curses");
4282 nonl(); /* Tell curses not to do NL->CR/NL on output */
4283 cbreak(); /* Take input chars one at a time, no wait for \n */
4284 noecho(); /* Don't echo input */
4285 leaveok(stdscr, TRUE);
4290 getmaxyx(stdscr, y, x);
4291 status_win = newwin(1, 0, y - 1, 0);
4293 die("Failed to create status window");
4295 /* Enable keyboard mapping */
4296 keypad(status_win, TRUE);
4297 wbkgdset(status_win, get_line_attr(LINE_STATUS));
4301 read_prompt(const char *prompt)
4303 enum { READING, STOP, CANCEL } status = READING;
4304 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
4307 while (status == READING) {
4313 foreach_view (view, i)
4318 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
4319 wclrtoeol(status_win);
4321 /* Refresh, accept single keystroke of input */
4322 key = wgetch(status_win);
4327 status = pos ? STOP : CANCEL;
4345 if (pos >= sizeof(buf)) {
4346 report("Input string too long");
4351 buf[pos++] = (char) key;
4355 /* Clear the status window */
4356 status_empty = FALSE;
4359 if (status == CANCEL)
4368 * Repository references
4371 static struct ref *refs;
4372 static size_t refs_size;
4374 /* Id <-> ref store */
4375 static struct ref ***id_refs;
4376 static size_t id_refs_size;
4378 static struct ref **
4381 struct ref ***tmp_id_refs;
4382 struct ref **ref_list = NULL;
4383 size_t ref_list_size = 0;
4386 for (i = 0; i < id_refs_size; i++)
4387 if (!strcmp(id, id_refs[i][0]->id))
4390 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
4394 id_refs = tmp_id_refs;
4396 for (i = 0; i < refs_size; i++) {
4399 if (strcmp(id, refs[i].id))
4402 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
4410 if (ref_list_size > 0)
4411 ref_list[ref_list_size - 1]->next = 1;
4412 ref_list[ref_list_size] = &refs[i];
4414 /* XXX: The properties of the commit chains ensures that we can
4415 * safely modify the shared ref. The repo references will
4416 * always be similar for the same id. */
4417 ref_list[ref_list_size]->next = 0;
4422 id_refs[id_refs_size++] = ref_list;
4428 read_ref(char *id, size_t idlen, char *name, size_t namelen)
4432 bool remote = FALSE;
4434 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
4435 /* Commits referenced by tags has "^{}" appended. */
4436 if (name[namelen - 1] != '}')
4439 while (namelen > 0 && name[namelen] != '^')
4443 namelen -= STRING_SIZE("refs/tags/");
4444 name += STRING_SIZE("refs/tags/");
4446 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
4448 namelen -= STRING_SIZE("refs/remotes/");
4449 name += STRING_SIZE("refs/remotes/");
4451 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
4452 namelen -= STRING_SIZE("refs/heads/");
4453 name += STRING_SIZE("refs/heads/");
4455 } else if (!strcmp(name, "HEAD")) {
4459 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
4463 ref = &refs[refs_size++];
4464 ref->name = malloc(namelen + 1);
4468 strncpy(ref->name, name, namelen);
4469 ref->name[namelen] = 0;
4471 ref->remote = remote;
4472 string_copy_rev(ref->id, id);
4480 const char *cmd_env = getenv("TIG_LS_REMOTE");
4481 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
4483 return read_properties(popen(cmd, "r"), "\t", read_ref);
4487 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
4489 if (!strcmp(name, "i18n.commitencoding"))
4490 string_ncopy(opt_encoding, value, valuelen);
4492 if (!strcmp(name, "core.editor"))
4493 string_ncopy(opt_editor, value, valuelen);
4499 load_repo_config(void)
4501 return read_properties(popen(GIT_CONFIG " --list", "r"),
4502 "=", read_repo_config_option);
4506 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
4508 if (!opt_git_dir[0])
4509 string_ncopy(opt_git_dir, name, namelen);
4511 string_ncopy(opt_cdup, name, namelen);
4515 /* XXX: The line outputted by "--show-cdup" can be empty so the option
4516 * must be the last one! */
4518 load_repo_info(void)
4520 return read_properties(popen("git rev-parse --git-dir --show-cdup 2>/dev/null", "r"),
4521 "=", read_repo_info);
4525 read_properties(FILE *pipe, const char *separators,
4526 int (*read_property)(char *, size_t, char *, size_t))
4528 char buffer[BUFSIZ];
4535 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
4540 name = chomp_string(name);
4541 namelen = strcspn(name, separators);
4543 if (name[namelen]) {
4545 value = chomp_string(name + namelen + 1);
4546 valuelen = strlen(value);
4553 state = read_property(name, namelen, value, valuelen);
4556 if (state != ERR && ferror(pipe))
4569 static void __NORETURN
4572 /* XXX: Restore tty modes and let the OS cleanup the rest! */
4578 static void __NORETURN
4579 die(const char *err, ...)
4585 va_start(args, err);
4586 fputs("tig: ", stderr);
4587 vfprintf(stderr, err, args);
4588 fputs("\n", stderr);
4595 main(int argc, char *argv[])
4598 enum request request;
4601 signal(SIGINT, quit);
4603 if (setlocale(LC_ALL, "")) {
4604 char *codeset = nl_langinfo(CODESET);
4606 string_ncopy(opt_codeset, codeset, strlen(codeset));
4609 if (load_repo_info() == ERR)
4610 die("Failed to load repo info.");
4612 /* Require a git repository unless when running in pager mode. */
4613 if (!opt_git_dir[0])
4614 die("Not a git repository");
4616 if (load_options() == ERR)
4617 die("Failed to load user config.");
4619 /* Load the repo config file so options can be overwritten from
4620 * the command line. */
4621 if (load_repo_config() == ERR)
4622 die("Failed to load repo config.");
4624 if (!parse_options(argc, argv))
4627 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
4628 opt_iconv = iconv_open(opt_codeset, opt_encoding);
4629 if (opt_iconv == ICONV_NONE)
4630 die("Failed to initialize character set conversion");
4633 if (load_refs() == ERR)
4634 die("Failed to load refs.");
4636 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
4637 view->cmd_env = getenv(view->cmd_env);
4639 request = opt_request;
4643 while (view_driver(display[current_view], request)) {
4647 foreach_view (view, i)
4650 /* Refresh, accept single keystroke of input */
4651 key = wgetch(status_win);
4653 /* wgetch() with nodelay() enabled returns ERR when there's no
4660 request = get_keybinding(display[current_view]->keymap, key);
4662 /* Some low-level request handling. This keeps access to
4663 * status_win restricted. */
4667 char *cmd = read_prompt(":");
4669 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
4670 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
4671 opt_request = REQ_VIEW_DIFF;
4673 opt_request = REQ_VIEW_PAGER;
4682 case REQ_SEARCH_BACK:
4684 const char *prompt = request == REQ_SEARCH
4686 char *search = read_prompt(prompt);
4689 string_ncopy(opt_search, search, strlen(search));
4694 case REQ_SCREEN_RESIZE:
4698 getmaxyx(stdscr, height, width);
4700 /* Resize the status view and let the view driver take
4701 * care of resizing the displayed views. */
4702 wresize(status_win, 1, width);
4703 mvwin(status_win, height - 1, 0);
4704 wrefresh(status_win);