1 /* Copyright (c) 2006-2007 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.
19 #define TIG_VERSION "unknown-version"
34 #include <sys/types.h>
48 #define __NORETURN __attribute__((__noreturn__))
53 static void __NORETURN die(const char *err, ...);
54 static void report(const char *msg, ...);
55 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
56 static void set_nonblocking_input(bool loading);
57 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
59 #define ABS(x) ((x) >= 0 ? (x) : -(x))
60 #define MIN(x, y) ((x) < (y) ? (x) : (y))
62 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
63 #define STRING_SIZE(x) (sizeof(x) - 1)
65 #define SIZEOF_STR 1024 /* Default string size. */
66 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
67 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
71 #define REVGRAPH_INIT 'I'
72 #define REVGRAPH_MERGE 'M'
73 #define REVGRAPH_BRANCH '+'
74 #define REVGRAPH_COMMIT '*'
75 #define REVGRAPH_LINE '|'
77 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
79 /* This color name can be used to refer to the default term colors. */
80 #define COLOR_DEFAULT (-1)
82 #define ICONV_NONE ((iconv_t) -1)
84 #define ICONV_CONST /* nothing */
87 /* The format and size of the date column in the main view. */
88 #define DATE_FORMAT "%Y-%m-%d %H:%M"
89 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
91 #define AUTHOR_COLS 20
93 /* The default interval between line numbers. */
94 #define NUMBER_INTERVAL 1
98 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
101 #define GIT_CONFIG "git config"
104 #define TIG_LS_REMOTE \
105 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
107 #define TIG_DIFF_CMD \
108 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
110 #define TIG_LOG_CMD \
111 "git log --cc --stat -n100 %s 2>/dev/null"
113 #define TIG_MAIN_CMD \
114 "git log --topo-order --pretty=raw %s 2>/dev/null"
116 #define TIG_TREE_CMD \
119 #define TIG_BLOB_CMD \
120 "git cat-file blob %s"
122 /* XXX: Needs to be defined to the empty string. */
123 #define TIG_HELP_CMD ""
124 #define TIG_PAGER_CMD ""
125 #define TIG_STATUS_CMD ""
126 #define TIG_STAGE_CMD ""
128 /* Some ascii-shorthands fitted into the ncurses namespace. */
130 #define KEY_RETURN '\r'
135 char *name; /* Ref name; tag or head names are shortened. */
136 char id[SIZEOF_REV]; /* Commit SHA1 ID */
137 unsigned int tag:1; /* Is it a tag? */
138 unsigned int remote:1; /* Is it a remote ref? */
139 unsigned int next:1; /* For ref lists: are there more refs? */
142 static struct ref **get_refs(char *id);
151 set_from_int_map(struct int_map *map, size_t map_size,
152 int *value, const char *name, int namelen)
157 for (i = 0; i < map_size; i++)
158 if (namelen == map[i].namelen &&
159 !strncasecmp(name, map[i].name, namelen)) {
160 *value = map[i].value;
173 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
175 if (srclen > dstlen - 1)
178 strncpy(dst, src, srclen);
182 /* Shorthands for safely copying into a fixed buffer. */
184 #define string_copy(dst, src) \
185 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
187 #define string_ncopy(dst, src, srclen) \
188 string_ncopy_do(dst, sizeof(dst), src, srclen)
190 #define string_copy_rev(dst, src) \
191 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
193 #define string_add(dst, from, src) \
194 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
197 chomp_string(char *name)
201 while (isspace(*name))
204 namelen = strlen(name) - 1;
205 while (namelen > 0 && isspace(name[namelen]))
212 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
215 size_t pos = bufpos ? *bufpos : 0;
218 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
224 return pos >= bufsize ? FALSE : TRUE;
227 #define string_format(buf, fmt, args...) \
228 string_nformat(buf, sizeof(buf), NULL, fmt, args)
230 #define string_format_from(buf, from, fmt, args...) \
231 string_nformat(buf, sizeof(buf), from, fmt, args)
234 string_enum_compare(const char *str1, const char *str2, int len)
238 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
240 /* Diff-Header == DIFF_HEADER */
241 for (i = 0; i < len; i++) {
242 if (toupper(str1[i]) == toupper(str2[i]))
245 if (string_enum_sep(str1[i]) &&
246 string_enum_sep(str2[i]))
249 return str1[i] - str2[i];
257 * NOTE: The following is a slightly modified copy of the git project's shell
258 * quoting routines found in the quote.c file.
260 * Help to copy the thing properly quoted for the shell safety. any single
261 * quote is replaced with '\'', any exclamation point is replaced with '\!',
262 * and the whole thing is enclosed in a
265 * original sq_quote result
266 * name ==> name ==> 'name'
267 * a b ==> a b ==> 'a b'
268 * a'b ==> a'\''b ==> 'a'\''b'
269 * a!b ==> a'\!'b ==> 'a'\!'b'
273 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
277 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
280 while ((c = *src++)) {
281 if (c == '\'' || c == '!') {
292 if (bufsize < SIZEOF_STR)
304 /* XXX: Keep the view request first and in sync with views[]. */ \
305 REQ_GROUP("View switching") \
306 REQ_(VIEW_MAIN, "Show main view"), \
307 REQ_(VIEW_DIFF, "Show diff view"), \
308 REQ_(VIEW_LOG, "Show log view"), \
309 REQ_(VIEW_TREE, "Show tree view"), \
310 REQ_(VIEW_BLOB, "Show blob view"), \
311 REQ_(VIEW_HELP, "Show help page"), \
312 REQ_(VIEW_PAGER, "Show pager view"), \
313 REQ_(VIEW_STATUS, "Show status view"), \
314 REQ_(VIEW_STAGE, "Show stage view"), \
316 REQ_GROUP("View manipulation") \
317 REQ_(ENTER, "Enter current line and scroll"), \
318 REQ_(NEXT, "Move to next"), \
319 REQ_(PREVIOUS, "Move to previous"), \
320 REQ_(VIEW_NEXT, "Move focus to next view"), \
321 REQ_(VIEW_CLOSE, "Close the current view"), \
322 REQ_(QUIT, "Close all views and quit"), \
324 REQ_GROUP("Cursor navigation") \
325 REQ_(MOVE_UP, "Move cursor one line up"), \
326 REQ_(MOVE_DOWN, "Move cursor one line down"), \
327 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
328 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
329 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
330 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
332 REQ_GROUP("Scrolling") \
333 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
334 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
335 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
336 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
338 REQ_GROUP("Searching") \
339 REQ_(SEARCH, "Search the view"), \
340 REQ_(SEARCH_BACK, "Search backwards in the view"), \
341 REQ_(FIND_NEXT, "Find next search match"), \
342 REQ_(FIND_PREV, "Find previous search match"), \
345 REQ_(NONE, "Do nothing"), \
346 REQ_(PROMPT, "Bring up the prompt"), \
347 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
348 REQ_(SCREEN_RESIZE, "Resize the screen"), \
349 REQ_(SHOW_VERSION, "Show version information"), \
350 REQ_(STOP_LOADING, "Stop all loading views"), \
351 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
352 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
353 REQ_(STATUS_UPDATE, "Update file status"), \
354 REQ_(EDIT, "Open in editor"), \
355 REQ_(CHERRY_PICK, "Cherry-pick commit to current branch")
358 /* User action requests. */
360 #define REQ_GROUP(help)
361 #define REQ_(req, help) REQ_##req
363 /* Offset all requests to avoid conflicts with ncurses getch values. */
364 REQ_OFFSET = KEY_MAX + 1,
372 struct request_info {
373 enum request request;
379 static struct request_info req_info[] = {
380 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
381 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
388 get_request(const char *name)
390 int namelen = strlen(name);
393 for (i = 0; i < ARRAY_SIZE(req_info); i++)
394 if (req_info[i].namelen == namelen &&
395 !string_enum_compare(req_info[i].name, name, namelen))
396 return req_info[i].request;
406 static const char usage[] =
407 "tig " TIG_VERSION " (" __DATE__ ")\n"
409 "Usage: tig [options]\n"
410 " or: tig [options] [--] [git log options]\n"
411 " or: tig [options] log [git log options]\n"
412 " or: tig [options] diff [git diff options]\n"
413 " or: tig [options] show [git show options]\n"
414 " or: tig [options] < [git command output]\n"
417 " -l Start up in log view\n"
418 " -d Start up in diff view\n"
419 " -S Start up in status view\n"
420 " -n[I], --line-number[=I] Show line numbers with given interval\n"
421 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
422 " -- Mark end of tig options\n"
423 " -v, --version Show version and exit\n"
424 " -h, --help Show help message and exit\n";
426 /* Option and state variables. */
427 static bool opt_line_number = FALSE;
428 static bool opt_rev_graph = FALSE;
429 static int opt_num_interval = NUMBER_INTERVAL;
430 static int opt_tab_size = TABSIZE;
431 static enum request opt_request = REQ_VIEW_MAIN;
432 static char opt_cmd[SIZEOF_STR] = "";
433 static char opt_path[SIZEOF_STR] = "";
434 static FILE *opt_pipe = NULL;
435 static char opt_encoding[20] = "UTF-8";
436 static bool opt_utf8 = TRUE;
437 static char opt_codeset[20] = "UTF-8";
438 static iconv_t opt_iconv = ICONV_NONE;
439 static char opt_search[SIZEOF_STR] = "";
440 static char opt_cdup[SIZEOF_STR] = "";
441 static char opt_git_dir[SIZEOF_STR] = "";
442 static char opt_editor[SIZEOF_STR] = "";
450 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
460 int namelen = strlen(name);
464 if (strncmp(opt, name, namelen))
467 if (opt[namelen] == '=')
468 value = opt + namelen + 1;
471 if (!short_name || opt[1] != short_name)
476 va_start(args, type);
477 if (type == OPT_INT) {
478 number = va_arg(args, int *);
480 *number = atoi(value);
487 /* Returns the index of log or diff command or -1 to exit. */
489 parse_options(int argc, char *argv[])
493 for (i = 1; i < argc; i++) {
496 if (!strcmp(opt, "log") ||
497 !strcmp(opt, "diff") ||
498 !strcmp(opt, "show")) {
499 opt_request = opt[0] == 'l'
500 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
504 if (opt[0] && opt[0] != '-')
507 if (!strcmp(opt, "-l")) {
508 opt_request = REQ_VIEW_LOG;
512 if (!strcmp(opt, "-d")) {
513 opt_request = REQ_VIEW_DIFF;
517 if (!strcmp(opt, "-S")) {
518 opt_request = REQ_VIEW_STATUS;
522 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
523 opt_line_number = TRUE;
527 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
528 opt_tab_size = MIN(opt_tab_size, TABSIZE);
532 if (check_option(opt, 'v', "version", OPT_NONE)) {
533 printf("tig version %s\n", TIG_VERSION);
537 if (check_option(opt, 'h', "help", OPT_NONE)) {
542 if (!strcmp(opt, "--")) {
547 die("unknown option '%s'\n\n%s", opt, usage);
550 if (!isatty(STDIN_FILENO)) {
551 opt_request = REQ_VIEW_PAGER;
554 } else if (i < argc) {
557 if (opt_request == REQ_VIEW_MAIN)
558 /* XXX: This is vulnerable to the user overriding
559 * options required for the main view parser. */
560 string_copy(opt_cmd, "git log --pretty=raw");
562 string_copy(opt_cmd, "git");
563 buf_size = strlen(opt_cmd);
565 while (buf_size < sizeof(opt_cmd) && i < argc) {
566 opt_cmd[buf_size++] = ' ';
567 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
570 if (buf_size >= sizeof(opt_cmd))
571 die("command too long");
573 opt_cmd[buf_size] = 0;
576 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
584 * Line-oriented content detection.
588 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
589 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
590 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
591 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
592 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
593 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
594 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
595 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
596 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
597 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
598 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
599 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
600 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
601 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
602 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
603 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
604 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
605 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
606 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
607 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
608 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
609 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
610 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
611 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
612 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
613 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
614 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
615 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
616 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
617 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
618 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
619 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
620 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
621 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
622 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
623 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
624 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
625 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
626 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
627 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
628 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
629 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
630 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
631 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
632 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
633 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
634 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0)
637 #define LINE(type, line, fg, bg, attr) \
644 const char *name; /* Option name. */
645 int namelen; /* Size of option name. */
646 const char *line; /* The start of line to match. */
647 int linelen; /* Size of string to match. */
648 int fg, bg, attr; /* Color and text attributes for the lines. */
651 static struct line_info line_info[] = {
652 #define LINE(type, line, fg, bg, attr) \
653 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
658 static enum line_type
659 get_line_type(char *line)
661 int linelen = strlen(line);
664 for (type = 0; type < ARRAY_SIZE(line_info); type++)
665 /* Case insensitive search matches Signed-off-by lines better. */
666 if (linelen >= line_info[type].linelen &&
667 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
674 get_line_attr(enum line_type type)
676 assert(type < ARRAY_SIZE(line_info));
677 return COLOR_PAIR(type) | line_info[type].attr;
680 static struct line_info *
681 get_line_info(char *name, int namelen)
685 for (type = 0; type < ARRAY_SIZE(line_info); type++)
686 if (namelen == line_info[type].namelen &&
687 !string_enum_compare(line_info[type].name, name, namelen))
688 return &line_info[type];
696 int default_bg = COLOR_BLACK;
697 int default_fg = COLOR_WHITE;
702 if (use_default_colors() != ERR) {
707 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
708 struct line_info *info = &line_info[type];
709 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
710 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
712 init_pair(type, fg, bg);
720 unsigned int selected:1;
722 void *data; /* User data */
732 enum request request;
733 struct keybinding *next;
736 static struct keybinding default_keybindings[] = {
738 { 'm', REQ_VIEW_MAIN },
739 { 'd', REQ_VIEW_DIFF },
740 { 'l', REQ_VIEW_LOG },
741 { 't', REQ_VIEW_TREE },
742 { 'f', REQ_VIEW_BLOB },
743 { 'p', REQ_VIEW_PAGER },
744 { 'h', REQ_VIEW_HELP },
745 { 'S', REQ_VIEW_STATUS },
746 { 'c', REQ_VIEW_STAGE },
748 /* View manipulation */
749 { 'q', REQ_VIEW_CLOSE },
750 { KEY_TAB, REQ_VIEW_NEXT },
751 { KEY_RETURN, REQ_ENTER },
752 { KEY_UP, REQ_PREVIOUS },
753 { KEY_DOWN, REQ_NEXT },
755 /* Cursor navigation */
756 { 'k', REQ_MOVE_UP },
757 { 'j', REQ_MOVE_DOWN },
758 { KEY_HOME, REQ_MOVE_FIRST_LINE },
759 { KEY_END, REQ_MOVE_LAST_LINE },
760 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
761 { ' ', REQ_MOVE_PAGE_DOWN },
762 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
763 { 'b', REQ_MOVE_PAGE_UP },
764 { '-', REQ_MOVE_PAGE_UP },
767 { KEY_IC, REQ_SCROLL_LINE_UP },
768 { KEY_DC, REQ_SCROLL_LINE_DOWN },
769 { 'w', REQ_SCROLL_PAGE_UP },
770 { 's', REQ_SCROLL_PAGE_DOWN },
774 { '?', REQ_SEARCH_BACK },
775 { 'n', REQ_FIND_NEXT },
776 { 'N', REQ_FIND_PREV },
780 { 'z', REQ_STOP_LOADING },
781 { 'v', REQ_SHOW_VERSION },
782 { 'r', REQ_SCREEN_REDRAW },
783 { '.', REQ_TOGGLE_LINENO },
784 { 'g', REQ_TOGGLE_REV_GRAPH },
786 { 'u', REQ_STATUS_UPDATE },
788 { 'C', REQ_CHERRY_PICK },
790 /* Using the ncurses SIGWINCH handler. */
791 { KEY_RESIZE, REQ_SCREEN_RESIZE },
794 #define KEYMAP_INFO \
807 #define KEYMAP_(name) KEYMAP_##name
812 static struct int_map keymap_table[] = {
813 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
818 #define set_keymap(map, name) \
819 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
821 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
824 add_keybinding(enum keymap keymap, enum request request, int key)
826 struct keybinding *keybinding;
828 keybinding = calloc(1, sizeof(*keybinding));
830 die("Failed to allocate keybinding");
832 keybinding->alias = key;
833 keybinding->request = request;
834 keybinding->next = keybindings[keymap];
835 keybindings[keymap] = keybinding;
838 /* Looks for a key binding first in the given map, then in the generic map, and
839 * lastly in the default keybindings. */
841 get_keybinding(enum keymap keymap, int key)
843 struct keybinding *kbd;
846 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
847 if (kbd->alias == key)
850 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
851 if (kbd->alias == key)
854 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
855 if (default_keybindings[i].alias == key)
856 return default_keybindings[i].request;
858 return (enum request) key;
867 static struct key key_table[] = {
868 { "Enter", KEY_RETURN },
870 { "Backspace", KEY_BACKSPACE },
872 { "Escape", KEY_ESC },
873 { "Left", KEY_LEFT },
874 { "Right", KEY_RIGHT },
876 { "Down", KEY_DOWN },
877 { "Insert", KEY_IC },
878 { "Delete", KEY_DC },
880 { "Home", KEY_HOME },
882 { "PageUp", KEY_PPAGE },
883 { "PageDown", KEY_NPAGE },
893 { "F10", KEY_F(10) },
894 { "F11", KEY_F(11) },
895 { "F12", KEY_F(12) },
899 get_key_value(const char *name)
903 for (i = 0; i < ARRAY_SIZE(key_table); i++)
904 if (!strcasecmp(key_table[i].name, name))
905 return key_table[i].value;
907 if (strlen(name) == 1 && isprint(*name))
914 get_key(enum request request)
916 static char buf[BUFSIZ];
917 static char key_char[] = "'X'";
924 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
925 struct keybinding *keybinding = &default_keybindings[i];
929 if (keybinding->request != request)
932 for (key = 0; key < ARRAY_SIZE(key_table); key++)
933 if (key_table[key].value == keybinding->alias)
934 seq = key_table[key].name;
937 keybinding->alias < 127 &&
938 isprint(keybinding->alias)) {
939 key_char[1] = (char) keybinding->alias;
946 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
947 return "Too many keybindings!";
956 * User config file handling.
959 static struct int_map color_map[] = {
960 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
972 #define set_color(color, name) \
973 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
975 static struct int_map attr_map[] = {
976 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
986 #define set_attribute(attr, name) \
987 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
989 static int config_lineno;
990 static bool config_errors;
991 static char *config_msg;
993 /* Wants: object fgcolor bgcolor [attr] */
995 option_color_command(int argc, char *argv[])
997 struct line_info *info;
999 if (argc != 3 && argc != 4) {
1000 config_msg = "Wrong number of arguments given to color command";
1004 info = get_line_info(argv[0], strlen(argv[0]));
1006 config_msg = "Unknown color name";
1010 if (set_color(&info->fg, argv[1]) == ERR ||
1011 set_color(&info->bg, argv[2]) == ERR) {
1012 config_msg = "Unknown color";
1016 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1017 config_msg = "Unknown attribute";
1024 /* Wants: name = value */
1026 option_set_command(int argc, char *argv[])
1029 config_msg = "Wrong number of arguments given to set command";
1033 if (strcmp(argv[1], "=")) {
1034 config_msg = "No value assigned";
1038 if (!strcmp(argv[0], "show-rev-graph")) {
1039 opt_rev_graph = (!strcmp(argv[2], "1") ||
1040 !strcmp(argv[2], "true") ||
1041 !strcmp(argv[2], "yes"));
1045 if (!strcmp(argv[0], "line-number-interval")) {
1046 opt_num_interval = atoi(argv[2]);
1050 if (!strcmp(argv[0], "tab-size")) {
1051 opt_tab_size = atoi(argv[2]);
1055 if (!strcmp(argv[0], "commit-encoding")) {
1056 char *arg = argv[2];
1057 int delimiter = *arg;
1060 switch (delimiter) {
1063 for (arg++, i = 0; arg[i]; i++)
1064 if (arg[i] == delimiter) {
1069 string_ncopy(opt_encoding, arg, strlen(arg));
1074 config_msg = "Unknown variable name";
1078 /* Wants: mode request key */
1080 option_bind_command(int argc, char *argv[])
1082 enum request request;
1087 config_msg = "Wrong number of arguments given to bind command";
1091 if (set_keymap(&keymap, argv[0]) == ERR) {
1092 config_msg = "Unknown key map";
1096 key = get_key_value(argv[1]);
1098 config_msg = "Unknown key";
1102 request = get_request(argv[2]);
1103 if (request == REQ_UNKNOWN) {
1104 config_msg = "Unknown request name";
1108 add_keybinding(keymap, request, key);
1114 set_option(char *opt, char *value)
1121 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1122 argv[argc++] = value;
1129 while (isspace(*value))
1133 if (!strcmp(opt, "color"))
1134 return option_color_command(argc, argv);
1136 if (!strcmp(opt, "set"))
1137 return option_set_command(argc, argv);
1139 if (!strcmp(opt, "bind"))
1140 return option_bind_command(argc, argv);
1142 config_msg = "Unknown option command";
1147 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1152 config_msg = "Internal error";
1154 /* Check for comment markers, since read_properties() will
1155 * only ensure opt and value are split at first " \t". */
1156 optlen = strcspn(opt, "#");
1160 if (opt[optlen] != 0) {
1161 config_msg = "No option value";
1165 /* Look for comment endings in the value. */
1166 size_t len = strcspn(value, "#");
1168 if (len < valuelen) {
1170 value[valuelen] = 0;
1173 status = set_option(opt, value);
1176 if (status == ERR) {
1177 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1178 config_lineno, (int) optlen, opt, config_msg);
1179 config_errors = TRUE;
1182 /* Always keep going if errors are encountered. */
1189 char *home = getenv("HOME");
1190 char buf[SIZEOF_STR];
1194 config_errors = FALSE;
1196 if (!home || !string_format(buf, "%s/.tigrc", home))
1199 /* It's ok that the file doesn't exist. */
1200 file = fopen(buf, "r");
1204 if (read_properties(file, " \t", read_option) == ERR ||
1205 config_errors == TRUE)
1206 fprintf(stderr, "Errors while loading %s.\n", buf);
1219 /* The display array of active views and the index of the current view. */
1220 static struct view *display[2];
1221 static unsigned int current_view;
1223 /* Reading from the prompt? */
1224 static bool input_mode = FALSE;
1226 #define foreach_displayed_view(view, i) \
1227 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1229 #define displayed_views() (display[1] != NULL ? 2 : 1)
1231 /* Current head and commit ID */
1232 static char ref_blob[SIZEOF_REF] = "";
1233 static char ref_commit[SIZEOF_REF] = "HEAD";
1234 static char ref_head[SIZEOF_REF] = "HEAD";
1237 const char *name; /* View name */
1238 const char *cmd_fmt; /* Default command line format */
1239 const char *cmd_env; /* Command line set via environment */
1240 const char *id; /* Points to either of ref_{head,commit,blob} */
1242 struct view_ops *ops; /* View operations */
1244 enum keymap keymap; /* What keymap does this view have */
1246 char cmd[SIZEOF_STR]; /* Command buffer */
1247 char ref[SIZEOF_REF]; /* Hovered commit reference */
1248 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1250 int height, width; /* The width and height of the main window */
1251 WINDOW *win; /* The main window */
1252 WINDOW *title; /* The title window living below the main window */
1255 unsigned long offset; /* Offset of the window top */
1256 unsigned long lineno; /* Current line number */
1259 char grep[SIZEOF_STR]; /* Search string */
1260 regex_t *regex; /* Pre-compiled regex */
1262 /* If non-NULL, points to the view that opened this view. If this view
1263 * is closed tig will switch back to the parent view. */
1264 struct view *parent;
1267 unsigned long lines; /* Total number of lines */
1268 struct line *line; /* Line index */
1269 unsigned long line_size;/* Total number of allocated lines */
1270 unsigned int digits; /* Number of digits in the lines member. */
1278 /* What type of content being displayed. Used in the title bar. */
1280 /* Open and reads in all view content. */
1281 bool (*open)(struct view *view);
1282 /* Read one line; updates view->line. */
1283 bool (*read)(struct view *view, char *data);
1284 /* Draw one line; @lineno must be < view->height. */
1285 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1286 /* Depending on view handle a special requests. */
1287 enum request (*request)(struct view *view, enum request request, struct line *line);
1288 /* Search for regex in a line. */
1289 bool (*grep)(struct view *view, struct line *line);
1291 void (*select)(struct view *view, struct line *line);
1294 static struct view_ops pager_ops;
1295 static struct view_ops main_ops;
1296 static struct view_ops tree_ops;
1297 static struct view_ops blob_ops;
1298 static struct view_ops help_ops;
1299 static struct view_ops status_ops;
1300 static struct view_ops stage_ops;
1302 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1303 { name, cmd, #env, ref, ops, map}
1305 #define VIEW_(id, name, ops, ref) \
1306 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1309 static struct view views[] = {
1310 VIEW_(MAIN, "main", &main_ops, ref_head),
1311 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1312 VIEW_(LOG, "log", &pager_ops, ref_head),
1313 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1314 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1315 VIEW_(HELP, "help", &help_ops, ""),
1316 VIEW_(PAGER, "pager", &pager_ops, "stdin"),
1317 VIEW_(STATUS, "status", &status_ops, ""),
1318 VIEW_(STAGE, "stage", &stage_ops, ""),
1321 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1323 #define foreach_view(view, i) \
1324 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1326 #define view_is_displayed(view) \
1327 (view == display[0] || view == display[1])
1330 draw_view_line(struct view *view, unsigned int lineno)
1333 bool selected = (view->offset + lineno == view->lineno);
1336 assert(view_is_displayed(view));
1338 if (view->offset + lineno >= view->lines)
1341 line = &view->line[view->offset + lineno];
1344 line->selected = TRUE;
1345 view->ops->select(view, line);
1346 } else if (line->selected) {
1347 line->selected = FALSE;
1348 wmove(view->win, lineno, 0);
1349 wclrtoeol(view->win);
1352 scrollok(view->win, FALSE);
1353 draw_ok = view->ops->draw(view, line, lineno, selected);
1354 scrollok(view->win, TRUE);
1360 redraw_view_from(struct view *view, int lineno)
1362 assert(0 <= lineno && lineno < view->height);
1364 for (; lineno < view->height; lineno++) {
1365 if (!draw_view_line(view, lineno))
1369 redrawwin(view->win);
1371 wnoutrefresh(view->win);
1373 wrefresh(view->win);
1377 redraw_view(struct view *view)
1380 redraw_view_from(view, 0);
1385 update_view_title(struct view *view)
1387 char buf[SIZEOF_STR];
1388 char state[SIZEOF_STR];
1389 size_t bufpos = 0, statelen = 0;
1391 assert(view_is_displayed(view));
1393 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1394 unsigned int view_lines = view->offset + view->height;
1395 unsigned int lines = view->lines
1396 ? MIN(view_lines, view->lines) * 100 / view->lines
1399 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1406 time_t secs = time(NULL) - view->start_time;
1408 /* Three git seconds are a long time ... */
1410 string_format_from(state, &statelen, " %lds", secs);
1414 string_format_from(buf, &bufpos, "[%s]", view->name);
1415 if (*view->ref && bufpos < view->width) {
1416 size_t refsize = strlen(view->ref);
1417 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1419 if (minsize < view->width)
1420 refsize = view->width - minsize + 7;
1421 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1424 if (statelen && bufpos < view->width) {
1425 string_format_from(buf, &bufpos, " %s", state);
1428 if (view == display[current_view])
1429 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1431 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1433 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1434 wclrtoeol(view->title);
1435 wmove(view->title, 0, view->width - 1);
1438 wnoutrefresh(view->title);
1440 wrefresh(view->title);
1444 resize_display(void)
1447 struct view *base = display[0];
1448 struct view *view = display[1] ? display[1] : display[0];
1450 /* Setup window dimensions */
1452 getmaxyx(stdscr, base->height, base->width);
1454 /* Make room for the status window. */
1458 /* Horizontal split. */
1459 view->width = base->width;
1460 view->height = SCALE_SPLIT_VIEW(base->height);
1461 base->height -= view->height;
1463 /* Make room for the title bar. */
1467 /* Make room for the title bar. */
1472 foreach_displayed_view (view, i) {
1474 view->win = newwin(view->height, 0, offset, 0);
1476 die("Failed to create %s view", view->name);
1478 scrollok(view->win, TRUE);
1480 view->title = newwin(1, 0, offset + view->height, 0);
1482 die("Failed to create title window");
1485 wresize(view->win, view->height, view->width);
1486 mvwin(view->win, offset, 0);
1487 mvwin(view->title, offset + view->height, 0);
1490 offset += view->height + 1;
1495 redraw_display(void)
1500 foreach_displayed_view (view, i) {
1502 update_view_title(view);
1507 update_display_cursor(struct view *view)
1509 /* Move the cursor to the right-most column of the cursor line.
1511 * XXX: This could turn out to be a bit expensive, but it ensures that
1512 * the cursor does not jump around. */
1514 wmove(view->win, view->lineno - view->offset, view->width - 1);
1515 wrefresh(view->win);
1523 /* Scrolling backend */
1525 do_scroll_view(struct view *view, int lines)
1527 bool redraw_current_line = FALSE;
1529 /* The rendering expects the new offset. */
1530 view->offset += lines;
1532 assert(0 <= view->offset && view->offset < view->lines);
1535 /* Move current line into the view. */
1536 if (view->lineno < view->offset) {
1537 view->lineno = view->offset;
1538 redraw_current_line = TRUE;
1539 } else if (view->lineno >= view->offset + view->height) {
1540 view->lineno = view->offset + view->height - 1;
1541 redraw_current_line = TRUE;
1544 assert(view->offset <= view->lineno && view->lineno < view->lines);
1546 /* Redraw the whole screen if scrolling is pointless. */
1547 if (view->height < ABS(lines)) {
1551 int line = lines > 0 ? view->height - lines : 0;
1552 int end = line + ABS(lines);
1554 wscrl(view->win, lines);
1556 for (; line < end; line++) {
1557 if (!draw_view_line(view, line))
1561 if (redraw_current_line)
1562 draw_view_line(view, view->lineno - view->offset);
1565 redrawwin(view->win);
1566 wrefresh(view->win);
1570 /* Scroll frontend */
1572 scroll_view(struct view *view, enum request request)
1576 assert(view_is_displayed(view));
1579 case REQ_SCROLL_PAGE_DOWN:
1580 lines = view->height;
1581 case REQ_SCROLL_LINE_DOWN:
1582 if (view->offset + lines > view->lines)
1583 lines = view->lines - view->offset;
1585 if (lines == 0 || view->offset + view->height >= view->lines) {
1586 report("Cannot scroll beyond the last line");
1591 case REQ_SCROLL_PAGE_UP:
1592 lines = view->height;
1593 case REQ_SCROLL_LINE_UP:
1594 if (lines > view->offset)
1595 lines = view->offset;
1598 report("Cannot scroll beyond the first line");
1606 die("request %d not handled in switch", request);
1609 do_scroll_view(view, lines);
1614 move_view(struct view *view, enum request request)
1616 int scroll_steps = 0;
1620 case REQ_MOVE_FIRST_LINE:
1621 steps = -view->lineno;
1624 case REQ_MOVE_LAST_LINE:
1625 steps = view->lines - view->lineno - 1;
1628 case REQ_MOVE_PAGE_UP:
1629 steps = view->height > view->lineno
1630 ? -view->lineno : -view->height;
1633 case REQ_MOVE_PAGE_DOWN:
1634 steps = view->lineno + view->height >= view->lines
1635 ? view->lines - view->lineno - 1 : view->height;
1647 die("request %d not handled in switch", request);
1650 if (steps <= 0 && view->lineno == 0) {
1651 report("Cannot move beyond the first line");
1654 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1655 report("Cannot move beyond the last line");
1659 /* Move the current line */
1660 view->lineno += steps;
1661 assert(0 <= view->lineno && view->lineno < view->lines);
1663 /* Check whether the view needs to be scrolled */
1664 if (view->lineno < view->offset ||
1665 view->lineno >= view->offset + view->height) {
1666 scroll_steps = steps;
1667 if (steps < 0 && -steps > view->offset) {
1668 scroll_steps = -view->offset;
1670 } else if (steps > 0) {
1671 if (view->lineno == view->lines - 1 &&
1672 view->lines > view->height) {
1673 scroll_steps = view->lines - view->offset - 1;
1674 if (scroll_steps >= view->height)
1675 scroll_steps -= view->height - 1;
1680 if (!view_is_displayed(view)) {
1681 view->offset += scroll_steps;
1682 assert(0 <= view->offset && view->offset < view->lines);
1683 view->ops->select(view, &view->line[view->lineno]);
1687 /* Repaint the old "current" line if we be scrolling */
1688 if (ABS(steps) < view->height)
1689 draw_view_line(view, view->lineno - steps - view->offset);
1692 do_scroll_view(view, scroll_steps);
1696 /* Draw the current line */
1697 draw_view_line(view, view->lineno - view->offset);
1699 redrawwin(view->win);
1700 wrefresh(view->win);
1709 static void search_view(struct view *view, enum request request);
1712 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1714 assert(view_is_displayed(view));
1716 if (!view->ops->grep(view, line))
1719 if (lineno - view->offset >= view->height) {
1720 view->offset = lineno;
1721 view->lineno = lineno;
1725 unsigned long old_lineno = view->lineno - view->offset;
1727 view->lineno = lineno;
1728 draw_view_line(view, old_lineno);
1730 draw_view_line(view, view->lineno - view->offset);
1731 redrawwin(view->win);
1732 wrefresh(view->win);
1735 report("Line %ld matches '%s'", lineno + 1, view->grep);
1740 find_next(struct view *view, enum request request)
1742 unsigned long lineno = view->lineno;
1747 report("No previous search");
1749 search_view(view, request);
1759 case REQ_SEARCH_BACK:
1768 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1769 lineno += direction;
1771 /* Note, lineno is unsigned long so will wrap around in which case it
1772 * will become bigger than view->lines. */
1773 for (; lineno < view->lines; lineno += direction) {
1774 struct line *line = &view->line[lineno];
1776 if (find_next_line(view, lineno, line))
1780 report("No match found for '%s'", view->grep);
1784 search_view(struct view *view, enum request request)
1789 regfree(view->regex);
1792 view->regex = calloc(1, sizeof(*view->regex));
1797 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1798 if (regex_err != 0) {
1799 char buf[SIZEOF_STR] = "unknown error";
1801 regerror(regex_err, view->regex, buf, sizeof(buf));
1802 report("Search failed: %s", buf);
1806 string_copy(view->grep, opt_search);
1808 find_next(view, request);
1812 * Incremental updating
1816 end_update(struct view *view)
1820 set_nonblocking_input(FALSE);
1821 if (view->pipe == stdin)
1829 begin_update(struct view *view)
1835 string_copy(view->cmd, opt_cmd);
1837 /* When running random commands, initially show the
1838 * command in the title. However, it maybe later be
1839 * overwritten if a commit line is selected. */
1840 if (view == VIEW(REQ_VIEW_PAGER))
1841 string_copy(view->ref, view->cmd);
1845 } else if (view == VIEW(REQ_VIEW_TREE)) {
1846 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1847 char path[SIZEOF_STR];
1849 if (strcmp(view->vid, view->id))
1850 opt_path[0] = path[0] = 0;
1851 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
1854 if (!string_format(view->cmd, format, view->id, path))
1858 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1859 const char *id = view->id;
1861 if (!string_format(view->cmd, format, id, id, id, id, id))
1864 /* Put the current ref_* value to the view title ref
1865 * member. This is needed by the blob view. Most other
1866 * views sets it automatically after loading because the
1867 * first line is a commit line. */
1868 string_copy_rev(view->ref, view->id);
1871 /* Special case for the pager view. */
1873 view->pipe = opt_pipe;
1876 view->pipe = popen(view->cmd, "r");
1882 set_nonblocking_input(TRUE);
1887 string_copy_rev(view->vid, view->id);
1892 for (i = 0; i < view->lines; i++)
1893 if (view->line[i].data)
1894 free(view->line[i].data);
1900 view->start_time = time(NULL);
1905 static struct line *
1906 realloc_lines(struct view *view, size_t line_size)
1908 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1914 view->line_size = line_size;
1919 update_view(struct view *view)
1921 char in_buffer[BUFSIZ];
1922 char out_buffer[BUFSIZ * 2];
1924 /* The number of lines to read. If too low it will cause too much
1925 * redrawing (and possible flickering), if too high responsiveness
1927 unsigned long lines = view->height;
1928 int redraw_from = -1;
1933 /* Only redraw if lines are visible. */
1934 if (view->offset + view->height >= view->lines)
1935 redraw_from = view->lines - view->offset;
1937 /* FIXME: This is probably not perfect for backgrounded views. */
1938 if (!realloc_lines(view, view->lines + lines))
1941 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1942 size_t linelen = strlen(line);
1945 line[linelen - 1] = 0;
1947 if (opt_iconv != ICONV_NONE) {
1948 ICONV_CONST char *inbuf = line;
1949 size_t inlen = linelen;
1951 char *outbuf = out_buffer;
1952 size_t outlen = sizeof(out_buffer);
1956 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1957 if (ret != (size_t) -1) {
1959 linelen = strlen(out_buffer);
1963 if (!view->ops->read(view, line))
1973 lines = view->lines;
1974 for (digits = 0; lines; digits++)
1977 /* Keep the displayed view in sync with line number scaling. */
1978 if (digits != view->digits) {
1979 view->digits = digits;
1984 if (!view_is_displayed(view))
1987 if (view == VIEW(REQ_VIEW_TREE)) {
1988 /* Clear the view and redraw everything since the tree sorting
1989 * might have rearranged things. */
1992 } else if (redraw_from >= 0) {
1993 /* If this is an incremental update, redraw the previous line
1994 * since for commits some members could have changed when
1995 * loading the main view. */
1996 if (redraw_from > 0)
1999 /* Since revision graph visualization requires knowledge
2000 * about the parent commit, it causes a further one-off
2001 * needed to be redrawn for incremental updates. */
2002 if (redraw_from > 0 && opt_rev_graph)
2005 /* Incrementally draw avoids flickering. */
2006 redraw_view_from(view, redraw_from);
2009 /* Update the title _after_ the redraw so that if the redraw picks up a
2010 * commit reference in view->ref it'll be available here. */
2011 update_view_title(view);
2014 if (ferror(view->pipe)) {
2015 report("Failed to read: %s", strerror(errno));
2018 } else if (feof(view->pipe)) {
2026 report("Allocation failure");
2029 view->ops->read(view, NULL);
2034 static struct line *
2035 add_line_data(struct view *view, void *data, enum line_type type)
2037 struct line *line = &view->line[view->lines++];
2039 memset(line, 0, sizeof(*line));
2046 static struct line *
2047 add_line_text(struct view *view, char *data, enum line_type type)
2050 data = strdup(data);
2052 return data ? add_line_data(view, data, type) : NULL;
2061 OPEN_DEFAULT = 0, /* Use default view switching. */
2062 OPEN_SPLIT = 1, /* Split current view. */
2063 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2064 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2068 open_view(struct view *prev, enum request request, enum open_flags flags)
2070 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2071 bool split = !!(flags & OPEN_SPLIT);
2072 bool reload = !!(flags & OPEN_RELOAD);
2073 struct view *view = VIEW(request);
2074 int nviews = displayed_views();
2075 struct view *base_view = display[0];
2077 if (view == prev && nviews == 1 && !reload) {
2078 report("Already in %s view", view->name);
2082 if (view->ops->open) {
2083 if (!view->ops->open(view)) {
2084 report("Failed to load %s view", view->name);
2088 } else if ((reload || strcmp(view->vid, view->id)) &&
2089 !begin_update(view)) {
2090 report("Failed to load %s view", view->name);
2099 /* Maximize the current view. */
2100 memset(display, 0, sizeof(display));
2102 display[current_view] = view;
2105 /* Resize the view when switching between split- and full-screen,
2106 * or when switching between two different full-screen views. */
2107 if (nviews != displayed_views() ||
2108 (nviews == 1 && base_view != display[0]))
2111 if (split && prev->lineno - prev->offset >= prev->height) {
2112 /* Take the title line into account. */
2113 int lines = prev->lineno - prev->offset - prev->height + 1;
2115 /* Scroll the view that was split if the current line is
2116 * outside the new limited view. */
2117 do_scroll_view(prev, lines);
2120 if (prev && view != prev) {
2121 if (split && !backgrounded) {
2122 /* "Blur" the previous view. */
2123 update_view_title(prev);
2126 view->parent = prev;
2129 if (view->pipe && view->lines == 0) {
2130 /* Clear the old view and let the incremental updating refill
2139 /* If the view is backgrounded the above calls to report()
2140 * won't redraw the view title. */
2142 update_view_title(view);
2146 open_editor(struct view *view, bool from_root, char *file)
2148 char cmd[SIZEOF_STR];
2149 char file_sq[SIZEOF_STR];
2151 char *prefix = from_root ? opt_cdup : "";
2153 editor = getenv("GIT_EDITOR");
2154 if (!editor && *opt_editor)
2155 editor = opt_editor;
2157 editor = getenv("VISUAL");
2159 editor = getenv("EDITOR");
2163 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2164 string_format(cmd, "%s %s%s", editor, prefix, file_sq)) {
2165 def_prog_mode(); /* save current tty modes */
2166 endwin(); /* restore original tty modes */
2174 * User request switch noodle
2178 view_driver(struct view *view, enum request request)
2182 if (request == REQ_NONE) {
2187 if (view && view->lines) {
2188 request = view->ops->request(view, request, &view->line[view->lineno]);
2189 if (request == REQ_NONE)
2196 case REQ_MOVE_PAGE_UP:
2197 case REQ_MOVE_PAGE_DOWN:
2198 case REQ_MOVE_FIRST_LINE:
2199 case REQ_MOVE_LAST_LINE:
2200 move_view(view, request);
2203 case REQ_SCROLL_LINE_DOWN:
2204 case REQ_SCROLL_LINE_UP:
2205 case REQ_SCROLL_PAGE_DOWN:
2206 case REQ_SCROLL_PAGE_UP:
2207 scroll_view(view, request);
2212 report("No file chosen, press %s to open tree view",
2213 get_key(REQ_VIEW_TREE));
2216 open_view(view, request, OPEN_DEFAULT);
2219 case REQ_VIEW_PAGER:
2220 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2221 report("No pager content, press %s to run command from prompt",
2222 get_key(REQ_PROMPT));
2225 open_view(view, request, OPEN_DEFAULT);
2228 case REQ_VIEW_STAGE:
2229 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2230 report("No stage content, press %s to open the status view and choose file",
2231 get_key(REQ_VIEW_STATUS));
2234 open_view(view, request, OPEN_DEFAULT);
2242 case REQ_VIEW_STATUS:
2243 open_view(view, request, OPEN_DEFAULT);
2248 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2250 if ((view == VIEW(REQ_VIEW_DIFF) &&
2251 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2252 (view == VIEW(REQ_VIEW_STAGE) &&
2253 view->parent == VIEW(REQ_VIEW_STATUS)) ||
2254 (view == VIEW(REQ_VIEW_BLOB) &&
2255 view->parent == VIEW(REQ_VIEW_TREE))) {
2258 view = view->parent;
2259 line = view->lineno;
2260 move_view(view, request);
2261 if (view_is_displayed(view))
2262 update_view_title(view);
2263 if (line != view->lineno)
2264 view->ops->request(view, REQ_ENTER,
2265 &view->line[view->lineno]);
2268 move_view(view, request);
2274 int nviews = displayed_views();
2275 int next_view = (current_view + 1) % nviews;
2277 if (next_view == current_view) {
2278 report("Only one view is displayed");
2282 current_view = next_view;
2283 /* Blur out the title of the previous view. */
2284 update_view_title(view);
2288 case REQ_TOGGLE_LINENO:
2289 opt_line_number = !opt_line_number;
2293 case REQ_TOGGLE_REV_GRAPH:
2294 opt_rev_graph = !opt_rev_graph;
2299 /* Always reload^Wrerun commands from the prompt. */
2300 open_view(view, opt_request, OPEN_RELOAD);
2304 case REQ_SEARCH_BACK:
2305 search_view(view, request);
2310 find_next(view, request);
2313 case REQ_STOP_LOADING:
2314 for (i = 0; i < ARRAY_SIZE(views); i++) {
2317 report("Stopped loading the %s view", view->name),
2322 case REQ_SHOW_VERSION:
2323 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
2326 case REQ_SCREEN_RESIZE:
2329 case REQ_SCREEN_REDRAW:
2334 report("Nothing to edit");
2337 case REQ_CHERRY_PICK:
2338 report("Nothing to cherry-pick");
2342 report("Nothing to enter");
2346 case REQ_VIEW_CLOSE:
2347 /* XXX: Mark closed views by letting view->parent point to the
2348 * view itself. Parents to closed view should never be
2351 view->parent->parent != view->parent) {
2352 memset(display, 0, sizeof(display));
2354 display[current_view] = view->parent;
2355 view->parent = view;
2365 /* An unknown key will show most commonly used commands. */
2366 report("Unknown key, press 'h' for help");
2379 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2381 char *text = line->data;
2382 enum line_type type = line->type;
2383 int textlen = strlen(text);
2386 wmove(view->win, lineno, 0);
2390 wchgat(view->win, -1, 0, type, NULL);
2393 attr = get_line_attr(type);
2394 wattrset(view->win, attr);
2396 if (opt_line_number || opt_tab_size < TABSIZE) {
2397 static char spaces[] = " ";
2398 int col_offset = 0, col = 0;
2400 if (opt_line_number) {
2401 unsigned long real_lineno = view->offset + lineno + 1;
2403 if (real_lineno == 1 ||
2404 (real_lineno % opt_num_interval) == 0) {
2405 wprintw(view->win, "%.*d", view->digits, real_lineno);
2408 waddnstr(view->win, spaces,
2409 MIN(view->digits, STRING_SIZE(spaces)));
2411 waddstr(view->win, ": ");
2412 col_offset = view->digits + 2;
2415 while (text && col_offset + col < view->width) {
2416 int cols_max = view->width - col_offset - col;
2420 if (*text == '\t') {
2422 assert(sizeof(spaces) > TABSIZE);
2424 cols = opt_tab_size - (col % opt_tab_size);
2427 text = strchr(text, '\t');
2428 cols = line ? text - pos : strlen(pos);
2431 waddnstr(view->win, pos, MIN(cols, cols_max));
2436 int col = 0, pos = 0;
2438 for (; pos < textlen && col < view->width; pos++, col++)
2439 if (text[pos] == '\t')
2440 col += TABSIZE - (col % TABSIZE) - 1;
2442 waddnstr(view->win, text, pos);
2449 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2451 char refbuf[SIZEOF_STR];
2455 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2458 pipe = popen(refbuf, "r");
2462 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2463 ref = chomp_string(ref);
2469 /* This is the only fatal call, since it can "corrupt" the buffer. */
2470 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2477 add_pager_refs(struct view *view, struct line *line)
2479 char buf[SIZEOF_STR];
2480 char *commit_id = line->data + STRING_SIZE("commit ");
2482 size_t bufpos = 0, refpos = 0;
2483 const char *sep = "Refs: ";
2484 bool is_tag = FALSE;
2486 assert(line->type == LINE_COMMIT);
2488 refs = get_refs(commit_id);
2490 if (view == VIEW(REQ_VIEW_DIFF))
2491 goto try_add_describe_ref;
2496 struct ref *ref = refs[refpos];
2497 char *fmt = ref->tag ? "%s[%s]" :
2498 ref->remote ? "%s<%s>" : "%s%s";
2500 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2505 } while (refs[refpos++]->next);
2507 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2508 try_add_describe_ref:
2509 /* Add <tag>-g<commit_id> "fake" reference. */
2510 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2517 if (!realloc_lines(view, view->line_size + 1))
2520 add_line_text(view, buf, LINE_PP_REFS);
2524 pager_read(struct view *view, char *data)
2531 line = add_line_text(view, data, get_line_type(data));
2535 if (line->type == LINE_COMMIT &&
2536 (view == VIEW(REQ_VIEW_DIFF) ||
2537 view == VIEW(REQ_VIEW_LOG)))
2538 add_pager_refs(view, line);
2544 pager_request(struct view *view, enum request request, struct line *line)
2548 if (request != REQ_ENTER)
2551 if (line->type == LINE_COMMIT &&
2552 (view == VIEW(REQ_VIEW_LOG) ||
2553 view == VIEW(REQ_VIEW_PAGER))) {
2554 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2558 /* Always scroll the view even if it was split. That way
2559 * you can use Enter to scroll through the log view and
2560 * split open each commit diff. */
2561 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2563 /* FIXME: A minor workaround. Scrolling the view will call report("")
2564 * but if we are scrolling a non-current view this won't properly
2565 * update the view title. */
2567 update_view_title(view);
2573 pager_grep(struct view *view, struct line *line)
2576 char *text = line->data;
2581 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2588 pager_select(struct view *view, struct line *line)
2590 if (line->type == LINE_COMMIT) {
2591 char *text = line->data + STRING_SIZE("commit ");
2593 if (view != VIEW(REQ_VIEW_PAGER))
2594 string_copy_rev(view->ref, text);
2595 string_copy_rev(ref_commit, text);
2599 static struct view_ops pager_ops = {
2615 help_open(struct view *view)
2618 int lines = ARRAY_SIZE(req_info) + 2;
2621 if (view->lines > 0)
2624 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2625 if (!req_info[i].request)
2628 view->line = calloc(lines, sizeof(*view->line));
2632 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2634 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2637 if (!req_info[i].request) {
2638 add_line_text(view, "", LINE_DEFAULT);
2639 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2643 key = get_key(req_info[i].request);
2644 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
2647 add_line_text(view, buf, LINE_DEFAULT);
2653 static struct view_ops help_ops = {
2668 struct tree_stack_entry {
2669 struct tree_stack_entry *prev; /* Entry below this in the stack */
2670 unsigned long lineno; /* Line number to restore */
2671 char *name; /* Position of name in opt_path */
2674 /* The top of the path stack. */
2675 static struct tree_stack_entry *tree_stack = NULL;
2676 unsigned long tree_lineno = 0;
2679 pop_tree_stack_entry(void)
2681 struct tree_stack_entry *entry = tree_stack;
2683 tree_lineno = entry->lineno;
2685 tree_stack = entry->prev;
2690 push_tree_stack_entry(char *name, unsigned long lineno)
2692 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
2693 size_t pathlen = strlen(opt_path);
2698 entry->prev = tree_stack;
2699 entry->name = opt_path + pathlen;
2702 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
2703 pop_tree_stack_entry();
2707 /* Move the current line to the first tree entry. */
2709 entry->lineno = lineno;
2712 /* Parse output from git-ls-tree(1):
2714 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2715 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2716 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2717 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2720 #define SIZEOF_TREE_ATTR \
2721 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2723 #define TREE_UP_FORMAT "040000 tree %s\t.."
2726 tree_compare_entry(enum line_type type1, char *name1,
2727 enum line_type type2, char *name2)
2729 if (type1 != type2) {
2730 if (type1 == LINE_TREE_DIR)
2735 return strcmp(name1, name2);
2739 tree_read(struct view *view, char *text)
2741 size_t textlen = text ? strlen(text) : 0;
2742 char buf[SIZEOF_STR];
2744 enum line_type type;
2745 bool first_read = view->lines == 0;
2747 if (textlen <= SIZEOF_TREE_ATTR)
2750 type = text[STRING_SIZE("100644 ")] == 't'
2751 ? LINE_TREE_DIR : LINE_TREE_FILE;
2754 /* Add path info line */
2755 if (!string_format(buf, "Directory path /%s", opt_path) ||
2756 !realloc_lines(view, view->line_size + 1) ||
2757 !add_line_text(view, buf, LINE_DEFAULT))
2760 /* Insert "link" to parent directory. */
2762 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2763 !realloc_lines(view, view->line_size + 1) ||
2764 !add_line_text(view, buf, LINE_TREE_DIR))
2769 /* Strip the path part ... */
2771 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2772 size_t striplen = strlen(opt_path);
2773 char *path = text + SIZEOF_TREE_ATTR;
2775 if (pathlen > striplen)
2776 memmove(path, path + striplen,
2777 pathlen - striplen + 1);
2780 /* Skip "Directory ..." and ".." line. */
2781 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2782 struct line *line = &view->line[pos];
2783 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2784 char *path2 = text + SIZEOF_TREE_ATTR;
2785 int cmp = tree_compare_entry(line->type, path1, type, path2);
2790 text = strdup(text);
2794 if (view->lines > pos)
2795 memmove(&view->line[pos + 1], &view->line[pos],
2796 (view->lines - pos) * sizeof(*line));
2798 line = &view->line[pos];
2805 if (!add_line_text(view, text, type))
2808 if (tree_lineno > view->lineno) {
2809 view->lineno = tree_lineno;
2817 tree_request(struct view *view, enum request request, struct line *line)
2819 enum open_flags flags;
2821 if (request != REQ_ENTER)
2824 /* Cleanup the stack if the tree view is at a different tree. */
2825 while (!*opt_path && tree_stack)
2826 pop_tree_stack_entry();
2828 switch (line->type) {
2830 /* Depending on whether it is a subdir or parent (updir?) link
2831 * mangle the path buffer. */
2832 if (line == &view->line[1] && *opt_path) {
2833 pop_tree_stack_entry();
2836 char *data = line->data;
2837 char *basename = data + SIZEOF_TREE_ATTR;
2839 push_tree_stack_entry(basename, view->lineno);
2842 /* Trees and subtrees share the same ID, so they are not not
2843 * unique like blobs. */
2844 flags = OPEN_RELOAD;
2845 request = REQ_VIEW_TREE;
2848 case LINE_TREE_FILE:
2849 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2850 request = REQ_VIEW_BLOB;
2857 open_view(view, request, flags);
2858 if (request == REQ_VIEW_TREE) {
2859 view->lineno = tree_lineno;
2866 tree_select(struct view *view, struct line *line)
2868 char *text = line->data + STRING_SIZE("100644 blob ");
2870 if (line->type == LINE_TREE_FILE) {
2871 string_copy_rev(ref_blob, text);
2873 } else if (line->type != LINE_TREE_DIR) {
2877 string_copy_rev(view->ref, text);
2880 static struct view_ops tree_ops = {
2891 blob_read(struct view *view, char *line)
2893 return add_line_text(view, line, LINE_DEFAULT) != NULL;
2896 static struct view_ops blob_ops = {
2915 char rev[SIZEOF_REV];
2919 char rev[SIZEOF_REV];
2921 char name[SIZEOF_STR];
2924 static struct status stage_status;
2925 static enum line_type stage_line_type;
2927 /* Get fields from the diff line:
2928 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
2931 status_get_diff(struct status *file, char *buf, size_t bufsize)
2933 char *old_mode = buf + 1;
2934 char *new_mode = buf + 8;
2935 char *old_rev = buf + 15;
2936 char *new_rev = buf + 56;
2937 char *status = buf + 97;
2939 if (bufsize != 99 ||
2940 old_mode[-1] != ':' ||
2941 new_mode[-1] != ' ' ||
2942 old_rev[-1] != ' ' ||
2943 new_rev[-1] != ' ' ||
2947 file->status = *status;
2949 string_copy_rev(file->old.rev, old_rev);
2950 string_copy_rev(file->new.rev, new_rev);
2952 file->old.mode = strtoul(old_mode, NULL, 8);
2953 file->new.mode = strtoul(new_mode, NULL, 8);
2961 status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
2963 struct status *file = NULL;
2964 char buf[SIZEOF_STR * 4];
2968 pipe = popen(cmd, "r");
2972 add_line_data(view, NULL, type);
2974 while (!feof(pipe) && !ferror(pipe)) {
2978 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
2981 bufsize += readsize;
2983 /* Process while we have NUL chars. */
2984 while ((sep = memchr(buf, 0, bufsize))) {
2985 size_t sepsize = sep - buf + 1;
2988 if (!realloc_lines(view, view->line_size + 1))
2991 file = calloc(1, sizeof(*file));
2995 add_line_data(view, file, type);
2998 /* Parse diff info part. */
3002 } else if (!file->status) {
3003 if (!status_get_diff(file, buf, sepsize))
3007 memmove(buf, sep + 1, bufsize);
3009 sep = memchr(buf, 0, bufsize);
3012 sepsize = sep - buf + 1;
3015 /* git-ls-files just delivers a NUL separated
3016 * list of file names similar to the second half
3017 * of the git-diff-* output. */
3018 string_ncopy(file->name, buf, sepsize);
3020 memmove(buf, sep + 1, bufsize);
3031 if (!view->line[view->lines - 1].data)
3032 add_line_data(view, NULL, LINE_STAT_NONE);
3038 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --cached HEAD"
3039 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
3040 #define STATUS_LIST_OTHER_CMD \
3041 "git ls-files -z --others --exclude-per-directory=.gitignore"
3043 #define STATUS_DIFF_SHOW_CMD \
3044 "git diff --root --patch-with-stat --find-copies-harder -B -C %s -- %s 2>/dev/null"
3046 /* First parse staged info using git-diff-index(1), then parse unstaged
3047 * info using git-diff-files(1), and finally untracked files using
3048 * git-ls-files(1). */
3050 status_open(struct view *view)
3052 struct stat statbuf;
3053 char exclude[SIZEOF_STR];
3054 char cmd[SIZEOF_STR];
3055 unsigned long prev_lineno = view->lineno;
3059 for (i = 0; i < view->lines; i++)
3060 free(view->line[i].data);
3062 view->lines = view->line_size = view->lineno = 0;
3065 if (!realloc_lines(view, view->line_size + 6))
3068 if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
3071 string_copy(cmd, STATUS_LIST_OTHER_CMD);
3073 if (stat(exclude, &statbuf) >= 0) {
3074 size_t cmdsize = strlen(cmd);
3076 if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
3077 sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
3081 if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
3082 !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
3083 !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
3086 /* If all went well restore the previous line number to stay in
3088 if (prev_lineno < view->lines)
3089 view->lineno = prev_lineno;
3091 view->lineno = view->lines - 1;
3097 status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3099 struct status *status = line->data;
3101 wmove(view->win, lineno, 0);
3104 wattrset(view->win, get_line_attr(LINE_CURSOR));
3105 wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
3107 } else if (!status && line->type != LINE_STAT_NONE) {
3108 wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
3109 wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
3112 wattrset(view->win, get_line_attr(line->type));
3118 switch (line->type) {
3119 case LINE_STAT_STAGED:
3120 text = "Changes to be committed:";
3123 case LINE_STAT_UNSTAGED:
3124 text = "Changed but not updated:";
3127 case LINE_STAT_UNTRACKED:
3128 text = "Untracked files:";
3131 case LINE_STAT_NONE:
3132 text = " (no files)";
3139 waddstr(view->win, text);
3143 waddch(view->win, status->status);
3145 wattrset(view->win, A_NORMAL);
3146 wmove(view->win, lineno, 4);
3147 waddstr(view->win, status->name);
3153 status_enter(struct view *view, struct line *line)
3155 struct status *status = line->data;
3156 char path[SIZEOF_STR] = "";
3160 if (line->type == LINE_STAT_NONE ||
3161 (!status && line[1].type == LINE_STAT_NONE)) {
3162 report("No file to diff");
3166 if (status && sq_quote(path, 0, status->name) >= sizeof(path))
3170 line->type != LINE_STAT_UNTRACKED &&
3171 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
3174 switch (line->type) {
3175 case LINE_STAT_STAGED:
3176 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3180 info = "Staged changes to %s";
3182 info = "Staged changes";
3185 case LINE_STAT_UNSTAGED:
3186 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3190 info = "Unstaged changes to %s";
3192 info = "Unstaged changes";
3195 case LINE_STAT_UNTRACKED:
3201 report("No file to show");
3205 opt_pipe = fopen(status->name, "r");
3206 info = "Untracked file %s";
3213 open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_SPLIT);
3214 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
3216 stage_status = *status;
3218 memset(&stage_status, 0, sizeof(stage_status));
3221 stage_line_type = line->type;
3222 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.name);
3230 status_update_file(struct view *view, struct status *status, enum line_type type)
3232 char cmd[SIZEOF_STR];
3233 char buf[SIZEOF_STR];
3240 type != LINE_STAT_UNTRACKED &&
3241 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
3245 case LINE_STAT_STAGED:
3246 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
3252 string_add(cmd, cmdsize, "git update-index -z --index-info");
3255 case LINE_STAT_UNSTAGED:
3256 case LINE_STAT_UNTRACKED:
3257 if (!string_format_from(buf, &bufsize, "%s%c", status->name, 0))
3260 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
3267 pipe = popen(cmd, "w");
3271 while (!ferror(pipe) && written < bufsize) {
3272 written += fwrite(buf + written, 1, bufsize - written, pipe);
3277 if (written != bufsize)
3284 status_update(struct view *view)
3286 struct line *line = &view->line[view->lineno];
3288 assert(view->lines);
3291 while (++line < view->line + view->lines && line->data) {
3292 if (!status_update_file(view, line->data, line->type))
3293 report("Failed to update file status");
3296 if (!line[-1].data) {
3297 report("Nothing to update");
3301 } else if (!status_update_file(view, line->data, line->type)) {
3302 report("Failed to update file status");
3305 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
3309 status_request(struct view *view, enum request request, struct line *line)
3311 struct status *status = line->data;
3314 case REQ_STATUS_UPDATE:
3315 status_update(view);
3322 open_editor(view, status->status != '?', status->name);
3326 status_enter(view, line);
3337 status_select(struct view *view, struct line *line)
3339 struct status *status = line->data;
3340 char file[SIZEOF_STR] = "all files";
3343 if (status && !string_format(file, "'%s'", status->name))
3346 if (!status && line[1].type == LINE_STAT_NONE)
3349 switch (line->type) {
3350 case LINE_STAT_STAGED:
3351 text = "Press %s to unstage %s for commit";
3354 case LINE_STAT_UNSTAGED:
3355 text = "Press %s to stage %s for commit";
3358 case LINE_STAT_UNTRACKED:
3359 text = "Press %s to stage %s for addition";
3362 case LINE_STAT_NONE:
3363 text = "Nothing to update";
3370 string_format(view->ref, text, get_key(REQ_STATUS_UPDATE), file);
3374 status_grep(struct view *view, struct line *line)
3376 struct status *status = line->data;
3377 enum { S_STATUS, S_NAME, S_END } state;
3384 for (state = S_STATUS; state < S_END; state++) {
3388 case S_NAME: text = status->name; break;
3390 buf[0] = status->status;
3398 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3405 static struct view_ops status_ops = {
3417 stage_diff_line(FILE *pipe, struct line *line)
3419 char *buf = line->data;
3420 size_t bufsize = strlen(buf);
3423 while (!ferror(pipe) && written < bufsize) {
3424 written += fwrite(buf + written, 1, bufsize - written, pipe);
3429 return written == bufsize;
3432 static struct line *
3433 stage_diff_hdr(struct view *view, struct line *line)
3435 int diff_hdr_dir = line->type == LINE_DIFF_CHUNK ? -1 : 1;
3436 struct line *diff_hdr;
3438 if (line->type == LINE_DIFF_CHUNK)
3439 diff_hdr = line - 1;
3441 diff_hdr = view->line + 1;
3443 while (diff_hdr > view->line && diff_hdr < view->line + view->lines) {
3444 if (diff_hdr->type == LINE_DIFF_HEADER)
3447 diff_hdr += diff_hdr_dir;
3454 stage_update_chunk(struct view *view, struct line *line)
3456 char cmd[SIZEOF_STR];
3458 struct line *diff_hdr, *diff_chunk, *diff_end;
3461 diff_hdr = stage_diff_hdr(view, line);
3466 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
3469 if (!string_format_from(cmd, &cmdsize,
3470 "git apply --cached %s - && "
3471 "git update-index -q --unmerged --refresh 2>/dev/null",
3472 stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
3475 pipe = popen(cmd, "w");
3479 diff_end = view->line + view->lines;
3480 if (line->type != LINE_DIFF_CHUNK) {
3481 diff_chunk = diff_hdr;
3484 for (diff_chunk = line + 1; diff_chunk < diff_end; diff_chunk++)
3485 if (diff_chunk->type == LINE_DIFF_CHUNK ||
3486 diff_chunk->type == LINE_DIFF_HEADER)
3487 diff_end = diff_chunk;
3491 while (diff_hdr->type != LINE_DIFF_CHUNK) {
3492 switch (diff_hdr->type) {
3493 case LINE_DIFF_HEADER:
3494 case LINE_DIFF_INDEX:
3504 if (!stage_diff_line(pipe, diff_hdr++)) {
3511 while (diff_chunk < diff_end && stage_diff_line(pipe, diff_chunk))
3516 if (diff_chunk != diff_end)
3523 stage_update(struct view *view, struct line *line)
3525 if (stage_line_type != LINE_STAT_UNTRACKED &&
3526 (line->type == LINE_DIFF_CHUNK || !stage_status.status)) {
3527 if (!stage_update_chunk(view, line)) {
3528 report("Failed to apply chunk");
3532 } else if (!status_update_file(view, &stage_status, stage_line_type)) {
3533 report("Failed to update file");
3537 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
3539 view = VIEW(REQ_VIEW_STATUS);
3540 if (view_is_displayed(view))
3541 status_enter(view, &view->line[view->lineno]);
3545 stage_request(struct view *view, enum request request, struct line *line)
3548 case REQ_STATUS_UPDATE:
3549 stage_update(view, line);
3553 if (!stage_status.name[0])
3556 open_editor(view, stage_status.status != '?', stage_status.name);
3560 pager_request(view, request, line);
3570 static struct view_ops stage_ops = {
3586 char id[SIZEOF_REV]; /* SHA1 ID. */
3587 char title[128]; /* First line of the commit message. */
3588 char author[75]; /* Author of the commit. */
3589 struct tm time; /* Date from the author ident. */
3590 struct ref **refs; /* Repository references. */
3591 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
3592 size_t graph_size; /* The width of the graph array. */
3595 /* Size of rev graph with no "padding" columns */
3596 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
3599 struct rev_graph *prev, *next, *parents;
3600 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
3602 struct commit *commit;
3606 /* Parents of the commit being visualized. */
3607 static struct rev_graph graph_parents[4];
3609 /* The current stack of revisions on the graph. */
3610 static struct rev_graph graph_stacks[4] = {
3611 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
3612 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
3613 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
3614 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
3618 graph_parent_is_merge(struct rev_graph *graph)
3620 return graph->parents->size > 1;
3624 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
3626 struct commit *commit = graph->commit;
3628 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
3629 commit->graph[commit->graph_size++] = symbol;
3633 done_rev_graph(struct rev_graph *graph)
3635 if (graph_parent_is_merge(graph) &&
3636 graph->pos < graph->size - 1 &&
3637 graph->next->size == graph->size + graph->parents->size - 1) {
3638 size_t i = graph->pos + graph->parents->size - 1;
3640 graph->commit->graph_size = i * 2;
3641 while (i < graph->next->size - 1) {
3642 append_to_rev_graph(graph, ' ');
3643 append_to_rev_graph(graph, '\\');
3648 graph->size = graph->pos = 0;
3649 graph->commit = NULL;
3650 memset(graph->parents, 0, sizeof(*graph->parents));
3654 push_rev_graph(struct rev_graph *graph, char *parent)
3658 /* "Collapse" duplicate parents lines.
3660 * FIXME: This needs to also update update the drawn graph but
3661 * for now it just serves as a method for pruning graph lines. */
3662 for (i = 0; i < graph->size; i++)
3663 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
3666 if (graph->size < SIZEOF_REVITEMS) {
3667 string_copy_rev(graph->rev[graph->size++], parent);
3672 get_rev_graph_symbol(struct rev_graph *graph)
3676 if (graph->parents->size == 0)
3677 symbol = REVGRAPH_INIT;
3678 else if (graph_parent_is_merge(graph))
3679 symbol = REVGRAPH_MERGE;
3680 else if (graph->pos >= graph->size)
3681 symbol = REVGRAPH_BRANCH;
3683 symbol = REVGRAPH_COMMIT;
3689 draw_rev_graph(struct rev_graph *graph)
3692 chtype separator, line;
3694 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
3695 static struct rev_filler fillers[] = {
3696 { ' ', REVGRAPH_LINE },
3701 chtype symbol = get_rev_graph_symbol(graph);
3702 struct rev_filler *filler;
3705 filler = &fillers[DEFAULT];
3707 for (i = 0; i < graph->pos; i++) {
3708 append_to_rev_graph(graph, filler->line);
3709 if (graph_parent_is_merge(graph->prev) &&
3710 graph->prev->pos == i)
3711 filler = &fillers[RSHARP];
3713 append_to_rev_graph(graph, filler->separator);
3716 /* Place the symbol for this revision. */
3717 append_to_rev_graph(graph, symbol);
3719 if (graph->prev->size > graph->size)
3720 filler = &fillers[RDIAG];
3722 filler = &fillers[DEFAULT];
3726 for (; i < graph->size; i++) {
3727 append_to_rev_graph(graph, filler->separator);
3728 append_to_rev_graph(graph, filler->line);
3729 if (graph_parent_is_merge(graph->prev) &&
3730 i < graph->prev->pos + graph->parents->size)
3731 filler = &fillers[RSHARP];
3732 if (graph->prev->size > graph->size)
3733 filler = &fillers[LDIAG];
3736 if (graph->prev->size > graph->size) {
3737 append_to_rev_graph(graph, filler->separator);
3738 if (filler->line != ' ')
3739 append_to_rev_graph(graph, filler->line);
3743 /* Prepare the next rev graph */
3745 prepare_rev_graph(struct rev_graph *graph)
3749 /* First, traverse all lines of revisions up to the active one. */
3750 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
3751 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
3754 push_rev_graph(graph->next, graph->rev[graph->pos]);
3757 /* Interleave the new revision parent(s). */
3758 for (i = 0; i < graph->parents->size; i++)
3759 push_rev_graph(graph->next, graph->parents->rev[i]);
3761 /* Lastly, put any remaining revisions. */
3762 for (i = graph->pos + 1; i < graph->size; i++)
3763 push_rev_graph(graph->next, graph->rev[i]);
3767 update_rev_graph(struct rev_graph *graph)
3769 /* If this is the finalizing update ... */
3771 prepare_rev_graph(graph);
3773 /* Graph visualization needs a one rev look-ahead,
3774 * so the first update doesn't visualize anything. */
3775 if (!graph->prev->commit)
3778 draw_rev_graph(graph->prev);
3779 done_rev_graph(graph->prev->prev);
3788 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3790 char buf[DATE_COLS + 1];
3791 struct commit *commit = line->data;
3792 enum line_type type;
3798 if (!*commit->author)
3801 wmove(view->win, lineno, col);
3805 wattrset(view->win, get_line_attr(type));
3806 wchgat(view->win, -1, 0, type, NULL);
3809 type = LINE_MAIN_COMMIT;
3810 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
3813 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
3814 waddnstr(view->win, buf, timelen);
3815 waddstr(view->win, " ");
3818 wmove(view->win, lineno, col);
3819 if (type != LINE_CURSOR)
3820 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
3823 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
3825 authorlen = strlen(commit->author);
3826 if (authorlen > AUTHOR_COLS - 2) {
3827 authorlen = AUTHOR_COLS - 2;
3833 waddnstr(view->win, commit->author, authorlen);
3834 if (type != LINE_CURSOR)
3835 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
3836 waddch(view->win, '~');
3838 waddstr(view->win, commit->author);
3842 if (type != LINE_CURSOR)
3843 wattrset(view->win, A_NORMAL);
3845 if (opt_rev_graph && commit->graph_size) {
3848 wmove(view->win, lineno, col);
3849 /* Using waddch() instead of waddnstr() ensures that
3850 * they'll be rendered correctly for the cursor line. */
3851 for (i = 0; i < commit->graph_size; i++)
3852 waddch(view->win, commit->graph[i]);
3854 waddch(view->win, ' ');
3855 col += commit->graph_size + 1;
3858 wmove(view->win, lineno, col);
3864 if (type == LINE_CURSOR)
3866 else if (commit->refs[i]->tag)
3867 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
3868 else if (commit->refs[i]->remote)
3869 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
3871 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3872 waddstr(view->win, "[");
3873 waddstr(view->win, commit->refs[i]->name);
3874 waddstr(view->win, "]");
3875 if (type != LINE_CURSOR)
3876 wattrset(view->win, A_NORMAL);
3877 waddstr(view->win, " ");
3878 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3879 } while (commit->refs[i++]->next);
3882 if (type != LINE_CURSOR)
3883 wattrset(view->win, get_line_attr(type));
3886 int titlelen = strlen(commit->title);
3888 if (col + titlelen > view->width)
3889 titlelen = view->width - col;
3891 waddnstr(view->win, commit->title, titlelen);
3897 /* Reads git log --pretty=raw output and parses it into the commit struct. */
3899 main_read(struct view *view, char *line)
3901 static struct rev_graph *graph = graph_stacks;
3902 enum line_type type;
3903 struct commit *commit;
3906 update_rev_graph(graph);
3910 type = get_line_type(line);
3911 if (type == LINE_COMMIT) {
3912 commit = calloc(1, sizeof(struct commit));
3916 string_copy_rev(commit->id, line + STRING_SIZE("commit "));
3917 commit->refs = get_refs(commit->id);
3918 graph->commit = commit;
3919 add_line_data(view, commit, LINE_MAIN_COMMIT);
3925 commit = view->line[view->lines - 1].data;
3929 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
3934 /* Parse author lines where the name may be empty:
3935 * author <email@address.tld> 1138474660 +0100
3937 char *ident = line + STRING_SIZE("author ");
3938 char *nameend = strchr(ident, '<');
3939 char *emailend = strchr(ident, '>');
3941 if (!nameend || !emailend)
3944 update_rev_graph(graph);
3945 graph = graph->next;
3947 *nameend = *emailend = 0;
3948 ident = chomp_string(ident);
3950 ident = chomp_string(nameend + 1);
3955 string_ncopy(commit->author, ident, strlen(ident));
3957 /* Parse epoch and timezone */
3958 if (emailend[1] == ' ') {
3959 char *secs = emailend + 2;
3960 char *zone = strchr(secs, ' ');
3961 time_t time = (time_t) atol(secs);
3963 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3967 tz = ('0' - zone[1]) * 60 * 60 * 10;
3968 tz += ('0' - zone[2]) * 60 * 60;
3969 tz += ('0' - zone[3]) * 60;
3970 tz += ('0' - zone[4]) * 60;
3978 gmtime_r(&time, &commit->time);
3983 /* Fill in the commit title if it has not already been set. */
3984 if (commit->title[0])
3987 /* Require titles to start with a non-space character at the
3988 * offset used by git log. */
3989 if (strncmp(line, " ", 4))
3992 /* Well, if the title starts with a whitespace character,
3993 * try to be forgiving. Otherwise we end up with no title. */
3994 while (isspace(*line))
3998 /* FIXME: More graceful handling of titles; append "..." to
3999 * shortened titles, etc. */
4001 string_ncopy(commit->title, line, strlen(line));
4008 cherry_pick_commit(struct commit *commit)
4010 char cmd[SIZEOF_STR];
4011 char *cherry_pick = getenv("TIG_CHERRY_PICK");
4014 cherry_pick = "git cherry-pick";
4016 if (string_format(cmd, "%s %s", cherry_pick, commit->id)) {
4017 def_prog_mode(); /* save current tty modes */
4018 endwin(); /* restore original tty modes */
4020 fprintf(stderr, "Press Enter to continue");
4028 main_request(struct view *view, enum request request, struct line *line)
4030 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4032 if (request == REQ_ENTER)
4033 open_view(view, REQ_VIEW_DIFF, flags);
4034 else if (request == REQ_CHERRY_PICK)
4035 cherry_pick_commit(line->data);
4043 main_grep(struct view *view, struct line *line)
4045 struct commit *commit = line->data;
4046 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
4047 char buf[DATE_COLS + 1];
4050 for (state = S_TITLE; state < S_END; state++) {
4054 case S_TITLE: text = commit->title; break;
4055 case S_AUTHOR: text = commit->author; break;
4057 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
4066 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4074 main_select(struct view *view, struct line *line)
4076 struct commit *commit = line->data;
4078 string_copy_rev(view->ref, commit->id);
4079 string_copy_rev(ref_commit, view->ref);
4082 static struct view_ops main_ops = {
4094 * Unicode / UTF-8 handling
4096 * NOTE: Much of the following code for dealing with unicode is derived from
4097 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
4098 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
4101 /* I've (over)annotated a lot of code snippets because I am not entirely
4102 * confident that the approach taken by this small UTF-8 interface is correct.
4106 unicode_width(unsigned long c)
4109 (c <= 0x115f /* Hangul Jamo */
4112 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
4114 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
4115 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
4116 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
4117 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
4118 || (c >= 0xffe0 && c <= 0xffe6)
4119 || (c >= 0x20000 && c <= 0x2fffd)
4120 || (c >= 0x30000 && c <= 0x3fffd)))
4126 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
4127 * Illegal bytes are set one. */
4128 static const unsigned char utf8_bytes[256] = {
4129 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,
4130 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,
4131 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,
4132 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,
4133 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,
4134 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,
4135 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,
4136 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,
4139 /* Decode UTF-8 multi-byte representation into a unicode character. */
4140 static inline unsigned long
4141 utf8_to_unicode(const char *string, size_t length)
4143 unsigned long unicode;
4147 unicode = string[0];
4150 unicode = (string[0] & 0x1f) << 6;
4151 unicode += (string[1] & 0x3f);
4154 unicode = (string[0] & 0x0f) << 12;
4155 unicode += ((string[1] & 0x3f) << 6);
4156 unicode += (string[2] & 0x3f);
4159 unicode = (string[0] & 0x0f) << 18;
4160 unicode += ((string[1] & 0x3f) << 12);
4161 unicode += ((string[2] & 0x3f) << 6);
4162 unicode += (string[3] & 0x3f);
4165 unicode = (string[0] & 0x0f) << 24;
4166 unicode += ((string[1] & 0x3f) << 18);
4167 unicode += ((string[2] & 0x3f) << 12);
4168 unicode += ((string[3] & 0x3f) << 6);
4169 unicode += (string[4] & 0x3f);
4172 unicode = (string[0] & 0x01) << 30;
4173 unicode += ((string[1] & 0x3f) << 24);
4174 unicode += ((string[2] & 0x3f) << 18);
4175 unicode += ((string[3] & 0x3f) << 12);
4176 unicode += ((string[4] & 0x3f) << 6);
4177 unicode += (string[5] & 0x3f);
4180 die("Invalid unicode length");
4183 /* Invalid characters could return the special 0xfffd value but NUL
4184 * should be just as good. */
4185 return unicode > 0xffff ? 0 : unicode;
4188 /* Calculates how much of string can be shown within the given maximum width
4189 * and sets trimmed parameter to non-zero value if all of string could not be
4192 * Additionally, adds to coloffset how many many columns to move to align with
4193 * the expected position. Takes into account how multi-byte and double-width
4194 * characters will effect the cursor position.
4196 * Returns the number of bytes to output from string to satisfy max_width. */
4198 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
4200 const char *start = string;
4201 const char *end = strchr(string, '\0');
4207 while (string < end) {
4208 int c = *(unsigned char *) string;
4209 unsigned char bytes = utf8_bytes[c];
4211 unsigned long unicode;
4213 if (string + bytes > end)
4216 /* Change representation to figure out whether
4217 * it is a single- or double-width character. */
4219 unicode = utf8_to_unicode(string, bytes);
4220 /* FIXME: Graceful handling of invalid unicode character. */
4224 ucwidth = unicode_width(unicode);
4226 if (width > max_width) {
4231 /* The column offset collects the differences between the
4232 * number of bytes encoding a character and the number of
4233 * columns will be used for rendering said character.
4235 * So if some character A is encoded in 2 bytes, but will be
4236 * represented on the screen using only 1 byte this will and up
4237 * adding 1 to the multi-byte column offset.
4239 * Assumes that no double-width character can be encoding in
4240 * less than two bytes. */
4241 if (bytes > ucwidth)
4242 mbwidth += bytes - ucwidth;
4247 *coloffset += mbwidth;
4249 return string - start;
4257 /* Whether or not the curses interface has been initialized. */
4258 static bool cursed = FALSE;
4260 /* The status window is used for polling keystrokes. */
4261 static WINDOW *status_win;
4263 static bool status_empty = TRUE;
4265 /* Update status and title window. */
4267 report(const char *msg, ...)
4269 struct view *view = display[current_view];
4274 if (!status_empty || *msg) {
4277 va_start(args, msg);
4279 wmove(status_win, 0, 0);
4281 vwprintw(status_win, msg, args);
4282 status_empty = FALSE;
4284 status_empty = TRUE;
4286 wclrtoeol(status_win);
4287 wrefresh(status_win);
4292 update_view_title(view);
4293 update_display_cursor(view);
4296 /* Controls when nodelay should be in effect when polling user input. */
4298 set_nonblocking_input(bool loading)
4300 static unsigned int loading_views;
4302 if ((loading == FALSE && loading_views-- == 1) ||
4303 (loading == TRUE && loading_views++ == 0))
4304 nodelay(status_win, loading);
4312 /* Initialize the curses library */
4313 if (isatty(STDIN_FILENO)) {
4314 cursed = !!initscr();
4316 /* Leave stdin and stdout alone when acting as a pager. */
4317 FILE *io = fopen("/dev/tty", "r+");
4320 die("Failed to open /dev/tty");
4321 cursed = !!newterm(NULL, io, io);
4325 die("Failed to initialize curses");
4327 nonl(); /* Tell curses not to do NL->CR/NL on output */
4328 cbreak(); /* Take input chars one at a time, no wait for \n */
4329 noecho(); /* Don't echo input */
4330 leaveok(stdscr, TRUE);
4335 getmaxyx(stdscr, y, x);
4336 status_win = newwin(1, 0, y - 1, 0);
4338 die("Failed to create status window");
4340 /* Enable keyboard mapping */
4341 keypad(status_win, TRUE);
4342 wbkgdset(status_win, get_line_attr(LINE_STATUS));
4346 read_prompt(const char *prompt)
4348 enum { READING, STOP, CANCEL } status = READING;
4349 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
4352 while (status == READING) {
4358 foreach_view (view, i)
4363 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
4364 wclrtoeol(status_win);
4366 /* Refresh, accept single keystroke of input */
4367 key = wgetch(status_win);
4372 status = pos ? STOP : CANCEL;
4390 if (pos >= sizeof(buf)) {
4391 report("Input string too long");
4396 buf[pos++] = (char) key;
4400 /* Clear the status window */
4401 status_empty = FALSE;
4404 if (status == CANCEL)
4413 * Repository references
4416 static struct ref *refs;
4417 static size_t refs_size;
4419 /* Id <-> ref store */
4420 static struct ref ***id_refs;
4421 static size_t id_refs_size;
4423 static struct ref **
4426 struct ref ***tmp_id_refs;
4427 struct ref **ref_list = NULL;
4428 size_t ref_list_size = 0;
4431 for (i = 0; i < id_refs_size; i++)
4432 if (!strcmp(id, id_refs[i][0]->id))
4435 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
4439 id_refs = tmp_id_refs;
4441 for (i = 0; i < refs_size; i++) {
4444 if (strcmp(id, refs[i].id))
4447 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
4455 if (ref_list_size > 0)
4456 ref_list[ref_list_size - 1]->next = 1;
4457 ref_list[ref_list_size] = &refs[i];
4459 /* XXX: The properties of the commit chains ensures that we can
4460 * safely modify the shared ref. The repo references will
4461 * always be similar for the same id. */
4462 ref_list[ref_list_size]->next = 0;
4467 id_refs[id_refs_size++] = ref_list;
4473 read_ref(char *id, size_t idlen, char *name, size_t namelen)
4477 bool remote = FALSE;
4479 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
4480 /* Commits referenced by tags has "^{}" appended. */
4481 if (name[namelen - 1] != '}')
4484 while (namelen > 0 && name[namelen] != '^')
4488 namelen -= STRING_SIZE("refs/tags/");
4489 name += STRING_SIZE("refs/tags/");
4491 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
4493 namelen -= STRING_SIZE("refs/remotes/");
4494 name += STRING_SIZE("refs/remotes/");
4496 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
4497 namelen -= STRING_SIZE("refs/heads/");
4498 name += STRING_SIZE("refs/heads/");
4500 } else if (!strcmp(name, "HEAD")) {
4504 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
4508 ref = &refs[refs_size++];
4509 ref->name = malloc(namelen + 1);
4513 strncpy(ref->name, name, namelen);
4514 ref->name[namelen] = 0;
4516 ref->remote = remote;
4517 string_copy_rev(ref->id, id);
4525 const char *cmd_env = getenv("TIG_LS_REMOTE");
4526 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
4528 return read_properties(popen(cmd, "r"), "\t", read_ref);
4532 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
4534 if (!strcmp(name, "i18n.commitencoding"))
4535 string_ncopy(opt_encoding, value, valuelen);
4537 if (!strcmp(name, "core.editor"))
4538 string_ncopy(opt_editor, value, valuelen);
4544 load_repo_config(void)
4546 return read_properties(popen(GIT_CONFIG " --list", "r"),
4547 "=", read_repo_config_option);
4551 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
4553 if (!opt_git_dir[0])
4554 string_ncopy(opt_git_dir, name, namelen);
4556 string_ncopy(opt_cdup, name, namelen);
4560 /* XXX: The line outputted by "--show-cdup" can be empty so the option
4561 * must be the last one! */
4563 load_repo_info(void)
4565 return read_properties(popen("git rev-parse --git-dir --show-cdup 2>/dev/null", "r"),
4566 "=", read_repo_info);
4570 read_properties(FILE *pipe, const char *separators,
4571 int (*read_property)(char *, size_t, char *, size_t))
4573 char buffer[BUFSIZ];
4580 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
4585 name = chomp_string(name);
4586 namelen = strcspn(name, separators);
4588 if (name[namelen]) {
4590 value = chomp_string(name + namelen + 1);
4591 valuelen = strlen(value);
4598 state = read_property(name, namelen, value, valuelen);
4601 if (state != ERR && ferror(pipe))
4614 static void __NORETURN
4617 /* XXX: Restore tty modes and let the OS cleanup the rest! */
4623 static void __NORETURN
4624 die(const char *err, ...)
4630 va_start(args, err);
4631 fputs("tig: ", stderr);
4632 vfprintf(stderr, err, args);
4633 fputs("\n", stderr);
4640 main(int argc, char *argv[])
4643 enum request request;
4646 signal(SIGINT, quit);
4648 if (setlocale(LC_ALL, "")) {
4649 char *codeset = nl_langinfo(CODESET);
4651 string_ncopy(opt_codeset, codeset, strlen(codeset));
4654 if (load_repo_info() == ERR)
4655 die("Failed to load repo info.");
4657 if (load_options() == ERR)
4658 die("Failed to load user config.");
4660 /* Load the repo config file so options can be overwritten from
4661 * the command line. */
4662 if (load_repo_config() == ERR)
4663 die("Failed to load repo config.");
4665 if (!parse_options(argc, argv))
4668 /* Require a git repository unless when running in pager mode. */
4669 if (!opt_git_dir[0])
4670 die("Not a git repository");
4672 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
4673 opt_iconv = iconv_open(opt_codeset, opt_encoding);
4674 if (opt_iconv == ICONV_NONE)
4675 die("Failed to initialize character set conversion");
4678 if (load_refs() == ERR)
4679 die("Failed to load refs.");
4681 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
4682 view->cmd_env = getenv(view->cmd_env);
4684 request = opt_request;
4688 while (view_driver(display[current_view], request)) {
4692 foreach_view (view, i)
4695 /* Refresh, accept single keystroke of input */
4696 key = wgetch(status_win);
4698 /* wgetch() with nodelay() enabled returns ERR when there's no
4705 request = get_keybinding(display[current_view]->keymap, key);
4707 /* Some low-level request handling. This keeps access to
4708 * status_win restricted. */
4712 char *cmd = read_prompt(":");
4714 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
4715 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
4716 opt_request = REQ_VIEW_DIFF;
4718 opt_request = REQ_VIEW_PAGER;
4727 case REQ_SEARCH_BACK:
4729 const char *prompt = request == REQ_SEARCH
4731 char *search = read_prompt(prompt);
4734 string_ncopy(opt_search, search, strlen(search));
4739 case REQ_SCREEN_RESIZE:
4743 getmaxyx(stdscr, height, width);
4745 /* Resize the status view and let the view driver take
4746 * care of resizing the displayed views. */
4747 wresize(status_win, 1, width);
4748 mvwin(status_win, height - 1, 0);
4749 wrefresh(status_win);