1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #define VERSION "tig-0.3"
36 #define __NORETURN __attribute__((__noreturn__))
41 static void __NORETURN die(const char *err, ...);
42 static void report(const char *msg, ...);
43 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
44 static void set_nonblocking_input(bool loading);
45 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
47 #define ABS(x) ((x) >= 0 ? (x) : -(x))
48 #define MIN(x, y) ((x) < (y) ? (x) : (y))
50 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
51 #define STRING_SIZE(x) (sizeof(x) - 1)
53 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
54 #define SIZEOF_CMD 1024 /* Size of command buffer. */
55 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
57 /* This color name can be used to refer to the default term colors. */
58 #define COLOR_DEFAULT (-1)
60 /* The format and size of the date column in the main view. */
61 #define DATE_FORMAT "%Y-%m-%d %H:%M"
62 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
64 #define AUTHOR_COLS 20
66 /* The default interval between line numbers. */
67 #define NUMBER_INTERVAL 1
71 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
73 #define TIG_LS_REMOTE \
74 "git ls-remote . 2>/dev/null"
76 #define TIG_DIFF_CMD \
77 "git show --patch-with-stat --find-copies-harder -B -C %s"
80 "git log --cc --stat -n100 %s"
82 #define TIG_MAIN_CMD \
83 "git log --topo-order --stat --pretty=raw %s"
85 /* XXX: Needs to be defined to the empty string. */
86 #define TIG_HELP_CMD ""
87 #define TIG_PAGER_CMD ""
89 /* Some ascii-shorthands fitted into the ncurses namespace. */
91 #define KEY_RETURN '\r'
96 char *name; /* Ref name; tag or head names are shortened. */
97 char id[41]; /* Commit SHA1 ID */
98 unsigned int tag:1; /* Is it a tag? */
99 unsigned int next:1; /* For ref lists: are there more refs? */
102 static struct ref **get_refs(char *id);
111 set_from_int_map(struct int_map *map, size_t map_size,
112 int *value, const char *name, int namelen)
117 for (i = 0; i < map_size; i++)
118 if (namelen == map[i].namelen &&
119 !strncasecmp(name, map[i].name, namelen)) {
120 *value = map[i].value;
133 string_ncopy(char *dst, const char *src, int dstlen)
135 strncpy(dst, src, dstlen - 1);
140 /* Shorthand for safely copying into a fixed buffer. */
141 #define string_copy(dst, src) \
142 string_ncopy(dst, src, sizeof(dst))
145 chomp_string(char *name)
149 while (isspace(*name))
152 namelen = strlen(name) - 1;
153 while (namelen > 0 && isspace(name[namelen]))
160 string_nformat(char *buf, size_t bufsize, int *bufpos, const char *fmt, ...)
163 int pos = bufpos ? *bufpos : 0;
166 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
172 return pos >= bufsize ? FALSE : TRUE;
175 #define string_format(buf, fmt, args...) \
176 string_nformat(buf, sizeof(buf), NULL, fmt, args)
178 #define string_format_from(buf, from, fmt, args...) \
179 string_nformat(buf, sizeof(buf), from, fmt, args)
183 * NOTE: The following is a slightly modified copy of the git project's shell
184 * quoting routines found in the quote.c file.
186 * Help to copy the thing properly quoted for the shell safety. any single
187 * quote is replaced with '\'', any exclamation point is replaced with '\!',
188 * and the whole thing is enclosed in a
191 * original sq_quote result
192 * name ==> name ==> 'name'
193 * a b ==> a b ==> 'a b'
194 * a'b ==> a'\''b ==> 'a'\''b'
195 * a!b ==> a'\!'b ==> 'a'\!'b'
199 sq_quote(char buf[SIZEOF_CMD], size_t bufsize, const char *src)
203 #define BUFPUT(x) do { if (bufsize < SIZEOF_CMD) buf[bufsize++] = (x); } while (0)
206 while ((c = *src++)) {
207 if (c == '\'' || c == '!') {
227 /* XXX: Keep the view request first and in sync with views[]. */ \
228 REQ_GROUP("View switching") \
229 REQ_(VIEW_MAIN, "Show main view"), \
230 REQ_(VIEW_DIFF, "Show diff view"), \
231 REQ_(VIEW_LOG, "Show log view"), \
232 REQ_(VIEW_HELP, "Show help page"), \
233 REQ_(VIEW_PAGER, "Show pager view"), \
235 REQ_GROUP("View manipulation") \
236 REQ_(ENTER, "Enter current line and scroll"), \
237 REQ_(NEXT, "Move to next"), \
238 REQ_(PREVIOUS, "Move to previous"), \
239 REQ_(VIEW_NEXT, "Move focus to next view"), \
240 REQ_(VIEW_CLOSE, "Close the current view"), \
241 REQ_(QUIT, "Close all views and quit"), \
243 REQ_GROUP("Cursor navigation") \
244 REQ_(MOVE_UP, "Move cursor one line up"), \
245 REQ_(MOVE_DOWN, "Move cursor one line down"), \
246 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
247 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
248 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
249 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
251 REQ_GROUP("Scrolling") \
252 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
253 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
254 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
255 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
258 REQ_(PROMPT, "Bring up the prompt"), \
259 REQ_(SCREEN_UPDATE, "Update the screen"), \
260 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
261 REQ_(SCREEN_RESIZE, "Resize the screen"), \
262 REQ_(SHOW_VERSION, "Show version information"), \
263 REQ_(STOP_LOADING, "Stop all loading views"), \
264 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
265 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"),
268 /* User action requests. */
270 #define REQ_GROUP(help)
271 #define REQ_(req, help) REQ_##req
273 /* Offset all requests to avoid conflicts with ncurses getch values. */
274 REQ_OFFSET = KEY_MAX + 1,
281 struct request_info {
282 enum request request;
286 static struct request_info req_info[] = {
287 #define REQ_GROUP(help) { 0, (help) },
288 #define REQ_(req, help) { REQ_##req, (help) }
298 static const char usage[] =
299 VERSION " (" __DATE__ ")\n"
301 "Usage: tig [options]\n"
302 " or: tig [options] [--] [git log options]\n"
303 " or: tig [options] log [git log options]\n"
304 " or: tig [options] diff [git diff options]\n"
305 " or: tig [options] show [git show options]\n"
306 " or: tig [options] < [git command output]\n"
309 " -l Start up in log view\n"
310 " -d Start up in diff view\n"
311 " -n[I], --line-number[=I] Show line numbers with given interval\n"
312 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
313 " -- Mark end of tig options\n"
314 " -v, --version Show version and exit\n"
315 " -h, --help Show help message and exit\n";
317 /* Option and state variables. */
318 static bool opt_line_number = FALSE;
319 static bool opt_rev_graph = TRUE;
320 static int opt_num_interval = NUMBER_INTERVAL;
321 static int opt_tab_size = TABSIZE;
322 static enum request opt_request = REQ_VIEW_MAIN;
323 static char opt_cmd[SIZEOF_CMD] = "";
324 static char opt_encoding[20] = "";
325 static bool opt_utf8 = TRUE;
326 static FILE *opt_pipe = NULL;
334 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
344 int namelen = strlen(name);
348 if (strncmp(opt, name, namelen))
351 if (opt[namelen] == '=')
352 value = opt + namelen + 1;
355 if (!short_name || opt[1] != short_name)
360 va_start(args, type);
361 if (type == OPT_INT) {
362 number = va_arg(args, int *);
364 *number = atoi(value);
371 /* Returns the index of log or diff command or -1 to exit. */
373 parse_options(int argc, char *argv[])
377 for (i = 1; i < argc; i++) {
380 if (!strcmp(opt, "-l")) {
381 opt_request = REQ_VIEW_LOG;
385 if (!strcmp(opt, "-d")) {
386 opt_request = REQ_VIEW_DIFF;
390 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
391 opt_line_number = TRUE;
395 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
396 opt_tab_size = MIN(opt_tab_size, TABSIZE);
400 if (check_option(opt, 'v', "version", OPT_NONE)) {
401 printf("tig version %s\n", VERSION);
405 if (check_option(opt, 'h', "help", OPT_NONE)) {
410 if (!strcmp(opt, "--")) {
415 if (!strcmp(opt, "log") ||
416 !strcmp(opt, "diff") ||
417 !strcmp(opt, "show")) {
418 opt_request = opt[0] == 'l'
419 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
423 if (opt[0] && opt[0] != '-')
426 die("unknown option '%s'\n\n%s", opt, usage);
429 if (!isatty(STDIN_FILENO)) {
430 opt_request = REQ_VIEW_PAGER;
433 } else if (i < argc) {
436 if (opt_request == REQ_VIEW_MAIN)
437 /* XXX: This is vulnerable to the user overriding
438 * options required for the main view parser. */
439 string_copy(opt_cmd, "git log --stat --pretty=raw");
441 string_copy(opt_cmd, "git");
442 buf_size = strlen(opt_cmd);
444 while (buf_size < sizeof(opt_cmd) && i < argc) {
445 opt_cmd[buf_size++] = ' ';
446 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
449 if (buf_size >= sizeof(opt_cmd))
450 die("command too long");
452 opt_cmd[buf_size] = 0;
456 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
464 * Line-oriented content detection.
468 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
469 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
470 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
471 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
472 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
473 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
474 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
475 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
476 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
477 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
478 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
479 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
480 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
481 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
482 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
483 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
484 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
485 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
486 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
487 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
488 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
489 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
490 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
491 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
492 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
493 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
494 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
495 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
496 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
497 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
498 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
499 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
500 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
501 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
502 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
503 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
504 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
505 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
508 #define LINE(type, line, fg, bg, attr) \
515 const char *name; /* Option name. */
516 int namelen; /* Size of option name. */
517 const char *line; /* The start of line to match. */
518 int linelen; /* Size of string to match. */
519 int fg, bg, attr; /* Color and text attributes for the lines. */
522 static struct line_info line_info[] = {
523 #define LINE(type, line, fg, bg, attr) \
524 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
529 static enum line_type
530 get_line_type(char *line)
532 int linelen = strlen(line);
535 for (type = 0; type < ARRAY_SIZE(line_info); type++)
536 /* Case insensitive search matches Signed-off-by lines better. */
537 if (linelen >= line_info[type].linelen &&
538 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
545 get_line_attr(enum line_type type)
547 assert(type < ARRAY_SIZE(line_info));
548 return COLOR_PAIR(type) | line_info[type].attr;
551 static struct line_info *
552 get_line_info(char *name, int namelen)
557 /* Diff-Header -> DIFF_HEADER */
558 for (i = 0; i < namelen; i++) {
561 else if (name[i] == '.')
565 for (type = 0; type < ARRAY_SIZE(line_info); type++)
566 if (namelen == line_info[type].namelen &&
567 !strncasecmp(line_info[type].name, name, namelen))
568 return &line_info[type];
576 int default_bg = COLOR_BLACK;
577 int default_fg = COLOR_WHITE;
582 if (use_default_colors() != ERR) {
587 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
588 struct line_info *info = &line_info[type];
589 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
590 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
592 init_pair(type, fg, bg);
598 void *data; /* User data */
611 static struct keymap keymap[] = {
613 { 'm', REQ_VIEW_MAIN },
614 { 'd', REQ_VIEW_DIFF },
615 { 'l', REQ_VIEW_LOG },
616 { 'p', REQ_VIEW_PAGER },
617 { 'h', REQ_VIEW_HELP },
618 { '?', REQ_VIEW_HELP },
620 /* View manipulation */
621 { 'q', REQ_VIEW_CLOSE },
622 { KEY_TAB, REQ_VIEW_NEXT },
623 { KEY_RETURN, REQ_ENTER },
624 { KEY_UP, REQ_PREVIOUS },
625 { KEY_DOWN, REQ_NEXT },
627 /* Cursor navigation */
628 { 'k', REQ_MOVE_UP },
629 { 'j', REQ_MOVE_DOWN },
630 { KEY_HOME, REQ_MOVE_FIRST_LINE },
631 { KEY_END, REQ_MOVE_LAST_LINE },
632 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
633 { ' ', REQ_MOVE_PAGE_DOWN },
634 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
635 { 'b', REQ_MOVE_PAGE_UP },
636 { '-', REQ_MOVE_PAGE_UP },
639 { KEY_IC, REQ_SCROLL_LINE_UP },
640 { KEY_DC, REQ_SCROLL_LINE_DOWN },
641 { 'w', REQ_SCROLL_PAGE_UP },
642 { 's', REQ_SCROLL_PAGE_DOWN },
646 { 'z', REQ_STOP_LOADING },
647 { 'v', REQ_SHOW_VERSION },
648 { 'r', REQ_SCREEN_REDRAW },
649 { 'n', REQ_TOGGLE_LINENO },
650 { 'g', REQ_TOGGLE_REV_GRAPH},
653 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
654 { ERR, REQ_SCREEN_UPDATE },
656 /* Use the ncurses SIGWINCH handler. */
657 { KEY_RESIZE, REQ_SCREEN_RESIZE },
665 for (i = 0; i < ARRAY_SIZE(keymap); i++)
666 if (keymap[i].alias == key)
667 return keymap[i].request;
669 return (enum request) key;
677 static struct key key_table[] = {
678 { "Enter", KEY_RETURN },
680 { "Backspace", KEY_BACKSPACE },
682 { "Escape", KEY_ESC },
683 { "Left", KEY_LEFT },
684 { "Right", KEY_RIGHT },
686 { "Down", KEY_DOWN },
687 { "Insert", KEY_IC },
688 { "Delete", KEY_DC },
689 { "Home", KEY_HOME },
691 { "PageUp", KEY_PPAGE },
692 { "PageDown", KEY_NPAGE },
702 { "F10", KEY_F(10) },
703 { "F11", KEY_F(11) },
704 { "F12", KEY_F(12) },
708 get_key(enum request request)
710 static char buf[BUFSIZ];
711 static char key_char[] = "'X'";
718 for (i = 0; i < ARRAY_SIZE(keymap); i++) {
722 if (keymap[i].request != request)
725 for (key = 0; key < ARRAY_SIZE(key_table); key++)
726 if (key_table[key].value == keymap[i].alias)
727 seq = key_table[key].name;
730 keymap[i].alias < 127 &&
731 isprint(keymap[i].alias)) {
732 key_char[1] = (char) keymap[i].alias;
739 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
740 return "Too many keybindings!";
749 * User config file handling.
752 static struct int_map color_map[] = {
753 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
765 #define set_color(color, name) \
766 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
768 static struct int_map attr_map[] = {
769 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
779 #define set_attribute(attr, name) \
780 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
782 static int config_lineno;
783 static bool config_errors;
784 static char *config_msg;
786 /* Wants: object fgcolor bgcolor [attr] */
788 option_color_command(int argc, char *argv[])
790 struct line_info *info;
792 if (argc != 3 && argc != 4) {
793 config_msg = "Wrong number of arguments given to color command";
797 info = get_line_info(argv[0], strlen(argv[0]));
799 config_msg = "Unknown color name";
803 if (set_color(&info->fg, argv[1]) == ERR) {
804 config_msg = "Unknown color";
808 if (set_color(&info->bg, argv[2]) == ERR) {
809 config_msg = "Unknown color";
813 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
814 config_msg = "Unknown attribute";
821 /* Wants: name = value */
823 option_set_command(int argc, char *argv[])
826 config_msg = "Wrong number of arguments given to set command";
830 if (strcmp(argv[1], "=")) {
831 config_msg = "No value assigned";
835 if (!strcmp(argv[0], "show-rev-graph")) {
836 opt_rev_graph = (!strcmp(argv[2], "1") ||
837 !strcmp(argv[2], "true") ||
838 !strcmp(argv[2], "yes"));
842 if (!strcmp(argv[0], "line-number-interval")) {
843 opt_num_interval = atoi(argv[2]);
847 if (!strcmp(argv[0], "tab-size")) {
848 opt_tab_size = atoi(argv[2]);
852 if (!strcmp(argv[0], "encoding")) {
853 string_copy(opt_encoding, argv[2]);
861 set_option(char *opt, char *value)
868 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
869 argv[argc++] = value;
876 while (isspace(*value))
880 if (!strcmp(opt, "color"))
881 return option_color_command(argc, argv);
883 if (!strcmp(opt, "set"))
884 return option_set_command(argc, argv);
890 read_option(char *opt, int optlen, char *value, int valuelen)
893 config_msg = "Internal error";
895 optlen = strcspn(opt, "#;");
897 /* The whole line is a commend or empty. */
900 } else if (opt[optlen] != 0) {
901 /* Part of the option name is a comment, so the value part
902 * should be ignored. */
904 opt[optlen] = value[valuelen] = 0;
906 /* Else look for comment endings in the value. */
907 valuelen = strcspn(value, "#;");
911 if (set_option(opt, value) == ERR) {
912 fprintf(stderr, "Error on line %d, near '%.*s' option: %s\n",
913 config_lineno, optlen, opt, config_msg);
914 config_errors = TRUE;
917 /* Always keep going if errors are encountered. */
924 char *home = getenv("HOME");
929 config_errors = FALSE;
931 if (!home || !string_format(buf, "%s/.tigrc", home))
934 /* It's ok that the file doesn't exist. */
935 file = fopen(buf, "r");
939 if (read_properties(file, " \t", read_option) == ERR ||
940 config_errors == TRUE)
941 fprintf(stderr, "Errors while loading %s.\n", buf);
954 /* The display array of active views and the index of the current view. */
955 static struct view *display[2];
956 static unsigned int current_view;
958 #define foreach_view(view, i) \
959 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
961 #define displayed_views() (display[1] != NULL ? 2 : 1)
963 /* Current head and commit ID */
964 static char ref_commit[SIZEOF_REF] = "HEAD";
965 static char ref_head[SIZEOF_REF] = "HEAD";
968 const char *name; /* View name */
969 const char *cmd_fmt; /* Default command line format */
970 const char *cmd_env; /* Command line set via environment */
971 const char *id; /* Points to either of ref_{head,commit} */
973 struct view_ops *ops; /* View operations */
975 char cmd[SIZEOF_CMD]; /* Command buffer */
976 char ref[SIZEOF_REF]; /* Hovered commit reference */
977 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
979 int height, width; /* The width and height of the main window */
980 WINDOW *win; /* The main window */
981 WINDOW *title; /* The title window living below the main window */
984 unsigned long offset; /* Offset of the window top */
985 unsigned long lineno; /* Current line number */
987 /* If non-NULL, points to the view that opened this view. If this view
988 * is closed tig will switch back to the parent view. */
992 unsigned long lines; /* Total number of lines */
993 struct line *line; /* Line index */
994 unsigned long line_size;/* Total number of allocated lines */
995 unsigned int digits; /* Number of digits in the lines member. */
1003 /* What type of content being displayed. Used in the title bar. */
1005 /* Draw one line; @lineno must be < view->height. */
1006 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1007 /* Read one line; updates view->line. */
1008 bool (*read)(struct view *view, char *data);
1009 /* Depending on view, change display based on current line. */
1010 bool (*enter)(struct view *view, struct line *line);
1013 static struct view_ops pager_ops;
1014 static struct view_ops main_ops;
1016 #define VIEW_STR(name, cmd, env, ref, ops) \
1017 { name, cmd, #env, ref, ops }
1019 #define VIEW_(id, name, ops, ref) \
1020 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops)
1023 static struct view views[] = {
1024 VIEW_(MAIN, "main", &main_ops, ref_head),
1025 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1026 VIEW_(LOG, "log", &pager_ops, ref_head),
1027 VIEW_(HELP, "help", &pager_ops, "static"),
1028 VIEW_(PAGER, "pager", &pager_ops, "static"),
1031 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1035 draw_view_line(struct view *view, unsigned int lineno)
1037 if (view->offset + lineno >= view->lines)
1040 return view->ops->draw(view, &view->line[view->offset + lineno], lineno);
1044 redraw_view_from(struct view *view, int lineno)
1046 assert(0 <= lineno && lineno < view->height);
1048 for (; lineno < view->height; lineno++) {
1049 if (!draw_view_line(view, lineno))
1053 redrawwin(view->win);
1054 wrefresh(view->win);
1058 redraw_view(struct view *view)
1061 redraw_view_from(view, 0);
1066 update_view_title(struct view *view)
1068 if (view == display[current_view])
1069 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1071 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1073 werase(view->title);
1074 wmove(view->title, 0, 0);
1077 wprintw(view->title, "[%s] %s", view->name, view->ref);
1079 wprintw(view->title, "[%s]", view->name);
1081 if (view->lines || view->pipe) {
1082 unsigned int view_lines = view->offset + view->height;
1083 unsigned int lines = view->lines
1084 ? MIN(view_lines, view->lines) * 100 / view->lines
1087 wprintw(view->title, " - %s %d of %d (%d%%)",
1095 time_t secs = time(NULL) - view->start_time;
1097 /* Three git seconds are a long time ... */
1099 wprintw(view->title, " %lds", secs);
1102 wmove(view->title, 0, view->width - 1);
1103 wrefresh(view->title);
1107 resize_display(void)
1110 struct view *base = display[0];
1111 struct view *view = display[1] ? display[1] : display[0];
1113 /* Setup window dimensions */
1115 getmaxyx(stdscr, base->height, base->width);
1117 /* Make room for the status window. */
1121 /* Horizontal split. */
1122 view->width = base->width;
1123 view->height = SCALE_SPLIT_VIEW(base->height);
1124 base->height -= view->height;
1126 /* Make room for the title bar. */
1130 /* Make room for the title bar. */
1135 foreach_view (view, i) {
1137 view->win = newwin(view->height, 0, offset, 0);
1139 die("Failed to create %s view", view->name);
1141 scrollok(view->win, TRUE);
1143 view->title = newwin(1, 0, offset + view->height, 0);
1145 die("Failed to create title window");
1148 wresize(view->win, view->height, view->width);
1149 mvwin(view->win, offset, 0);
1150 mvwin(view->title, offset + view->height, 0);
1153 offset += view->height + 1;
1158 redraw_display(void)
1163 foreach_view (view, i) {
1165 update_view_title(view);
1170 update_display_cursor(void)
1172 struct view *view = display[current_view];
1174 /* Move the cursor to the right-most column of the cursor line.
1176 * XXX: This could turn out to be a bit expensive, but it ensures that
1177 * the cursor does not jump around. */
1179 wmove(view->win, view->lineno - view->offset, view->width - 1);
1180 wrefresh(view->win);
1188 /* Scrolling backend */
1190 do_scroll_view(struct view *view, int lines, bool redraw)
1192 /* The rendering expects the new offset. */
1193 view->offset += lines;
1195 assert(0 <= view->offset && view->offset < view->lines);
1198 /* Redraw the whole screen if scrolling is pointless. */
1199 if (view->height < ABS(lines)) {
1203 int line = lines > 0 ? view->height - lines : 0;
1204 int end = line + ABS(lines);
1206 wscrl(view->win, lines);
1208 for (; line < end; line++) {
1209 if (!draw_view_line(view, line))
1214 /* Move current line into the view. */
1215 if (view->lineno < view->offset) {
1216 view->lineno = view->offset;
1217 draw_view_line(view, 0);
1219 } else if (view->lineno >= view->offset + view->height) {
1220 if (view->lineno == view->offset + view->height) {
1221 /* Clear the hidden line so it doesn't show if the view
1222 * is scrolled up. */
1223 wmove(view->win, view->height, 0);
1224 wclrtoeol(view->win);
1226 view->lineno = view->offset + view->height - 1;
1227 draw_view_line(view, view->lineno - view->offset);
1230 assert(view->offset <= view->lineno && view->lineno < view->lines);
1235 redrawwin(view->win);
1236 wrefresh(view->win);
1240 /* Scroll frontend */
1242 scroll_view(struct view *view, enum request request)
1247 case REQ_SCROLL_PAGE_DOWN:
1248 lines = view->height;
1249 case REQ_SCROLL_LINE_DOWN:
1250 if (view->offset + lines > view->lines)
1251 lines = view->lines - view->offset;
1253 if (lines == 0 || view->offset + view->height >= view->lines) {
1254 report("Cannot scroll beyond the last line");
1259 case REQ_SCROLL_PAGE_UP:
1260 lines = view->height;
1261 case REQ_SCROLL_LINE_UP:
1262 if (lines > view->offset)
1263 lines = view->offset;
1266 report("Cannot scroll beyond the first line");
1274 die("request %d not handled in switch", request);
1277 do_scroll_view(view, lines, TRUE);
1282 move_view(struct view *view, enum request request, bool redraw)
1287 case REQ_MOVE_FIRST_LINE:
1288 steps = -view->lineno;
1291 case REQ_MOVE_LAST_LINE:
1292 steps = view->lines - view->lineno - 1;
1295 case REQ_MOVE_PAGE_UP:
1296 steps = view->height > view->lineno
1297 ? -view->lineno : -view->height;
1300 case REQ_MOVE_PAGE_DOWN:
1301 steps = view->lineno + view->height >= view->lines
1302 ? view->lines - view->lineno - 1 : view->height;
1314 die("request %d not handled in switch", request);
1317 if (steps <= 0 && view->lineno == 0) {
1318 report("Cannot move beyond the first line");
1321 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1322 report("Cannot move beyond the last line");
1326 /* Move the current line */
1327 view->lineno += steps;
1328 assert(0 <= view->lineno && view->lineno < view->lines);
1330 /* Repaint the old "current" line if we be scrolling */
1331 if (ABS(steps) < view->height) {
1332 int prev_lineno = view->lineno - steps - view->offset;
1334 wmove(view->win, prev_lineno, 0);
1335 wclrtoeol(view->win);
1336 draw_view_line(view, prev_lineno);
1339 /* Check whether the view needs to be scrolled */
1340 if (view->lineno < view->offset ||
1341 view->lineno >= view->offset + view->height) {
1342 if (steps < 0 && -steps > view->offset) {
1343 steps = -view->offset;
1345 } else if (steps > 0) {
1346 if (view->lineno == view->lines - 1 &&
1347 view->lines > view->height) {
1348 steps = view->lines - view->offset - 1;
1349 if (steps >= view->height)
1350 steps -= view->height - 1;
1354 do_scroll_view(view, steps, redraw);
1358 /* Draw the current line */
1359 draw_view_line(view, view->lineno - view->offset);
1364 redrawwin(view->win);
1365 wrefresh(view->win);
1371 * Incremental updating
1375 end_update(struct view *view)
1379 set_nonblocking_input(FALSE);
1380 if (view->pipe == stdin)
1388 begin_update(struct view *view)
1390 const char *id = view->id;
1396 string_copy(view->cmd, opt_cmd);
1398 /* When running random commands, the view ref could have become
1399 * invalid so clear it. */
1402 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1404 if (!string_format(view->cmd, format, id, id, id, id, id))
1408 /* Special case for the pager view. */
1410 view->pipe = opt_pipe;
1413 view->pipe = popen(view->cmd, "r");
1419 set_nonblocking_input(TRUE);
1424 string_copy(view->vid, id);
1429 for (i = 0; i < view->lines; i++)
1430 if (view->line[i].data)
1431 free(view->line[i].data);
1437 view->start_time = time(NULL);
1442 static struct line *
1443 realloc_lines(struct view *view, size_t line_size)
1445 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1451 view->line_size = line_size;
1456 update_view(struct view *view)
1458 char buffer[BUFSIZ];
1460 /* The number of lines to read. If too low it will cause too much
1461 * redrawing (and possible flickering), if too high responsiveness
1463 unsigned long lines = view->height;
1464 int redraw_from = -1;
1469 /* Only redraw if lines are visible. */
1470 if (view->offset + view->height >= view->lines)
1471 redraw_from = view->lines - view->offset;
1473 if (!realloc_lines(view, view->lines + lines))
1476 while ((line = fgets(buffer, sizeof(buffer), view->pipe))) {
1477 int linelen = strlen(line);
1480 line[linelen - 1] = 0;
1482 if (!view->ops->read(view, line))
1492 lines = view->lines;
1493 for (digits = 0; lines; digits++)
1496 /* Keep the displayed view in sync with line number scaling. */
1497 if (digits != view->digits) {
1498 view->digits = digits;
1503 if (redraw_from >= 0) {
1504 /* If this is an incremental update, redraw the previous line
1505 * since for commits some members could have changed when
1506 * loading the main view. */
1507 if (redraw_from > 0)
1510 /* Incrementally draw avoids flickering. */
1511 redraw_view_from(view, redraw_from);
1514 /* Update the title _after_ the redraw so that if the redraw picks up a
1515 * commit reference in view->ref it'll be available here. */
1516 update_view_title(view);
1518 if (ferror(view->pipe)) {
1519 report("Failed to read: %s", strerror(errno));
1522 } else if (feof(view->pipe)) {
1530 report("Allocation failure");
1538 static void open_help_view(struct view *view)
1541 int lines = ARRAY_SIZE(req_info) + 2;
1544 if (view->lines > 0)
1547 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1548 if (!req_info[i].request)
1551 view->line = calloc(lines, sizeof(*view->line));
1553 report("Allocation failure");
1557 view->ops->read(view, "Quick reference for tig keybindings:");
1559 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1562 if (!req_info[i].request) {
1563 view->ops->read(view, "");
1564 view->ops->read(view, req_info[i].help);
1568 key = get_key(req_info[i].request);
1569 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1572 view->ops->read(view, buf);
1578 OPEN_DEFAULT = 0, /* Use default view switching. */
1579 OPEN_SPLIT = 1, /* Split current view. */
1580 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1581 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1585 open_view(struct view *prev, enum request request, enum open_flags flags)
1587 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1588 bool split = !!(flags & OPEN_SPLIT);
1589 bool reload = !!(flags & OPEN_RELOAD);
1590 struct view *view = VIEW(request);
1591 int nviews = displayed_views();
1592 struct view *base_view = display[0];
1594 if (view == prev && nviews == 1 && !reload) {
1595 report("Already in %s view", view->name);
1599 if (view == VIEW(REQ_VIEW_HELP)) {
1600 open_help_view(view);
1602 } else if ((reload || strcmp(view->vid, view->id)) &&
1603 !begin_update(view)) {
1604 report("Failed to load %s view", view->name);
1613 /* Maximize the current view. */
1614 memset(display, 0, sizeof(display));
1616 display[current_view] = view;
1619 /* Resize the view when switching between split- and full-screen,
1620 * or when switching between two different full-screen views. */
1621 if (nviews != displayed_views() ||
1622 (nviews == 1 && base_view != display[0]))
1625 if (split && prev->lineno - prev->offset >= prev->height) {
1626 /* Take the title line into account. */
1627 int lines = prev->lineno - prev->offset - prev->height + 1;
1629 /* Scroll the view that was split if the current line is
1630 * outside the new limited view. */
1631 do_scroll_view(prev, lines, TRUE);
1634 if (prev && view != prev) {
1635 if (split && !backgrounded) {
1636 /* "Blur" the previous view. */
1637 update_view_title(prev);
1640 view->parent = prev;
1643 if (view->pipe && view->lines == 0) {
1644 /* Clear the old view and let the incremental updating refill
1653 /* If the view is backgrounded the above calls to report()
1654 * won't redraw the view title. */
1656 update_view_title(view);
1661 * User request switch noodle
1665 view_driver(struct view *view, enum request request)
1672 case REQ_MOVE_PAGE_UP:
1673 case REQ_MOVE_PAGE_DOWN:
1674 case REQ_MOVE_FIRST_LINE:
1675 case REQ_MOVE_LAST_LINE:
1676 move_view(view, request, TRUE);
1679 case REQ_SCROLL_LINE_DOWN:
1680 case REQ_SCROLL_LINE_UP:
1681 case REQ_SCROLL_PAGE_DOWN:
1682 case REQ_SCROLL_PAGE_UP:
1683 scroll_view(view, request);
1690 case REQ_VIEW_PAGER:
1691 open_view(view, request, OPEN_DEFAULT);
1696 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
1698 if (view == VIEW(REQ_VIEW_DIFF) &&
1699 view->parent == VIEW(REQ_VIEW_MAIN)) {
1700 bool redraw = display[1] == view;
1702 view = view->parent;
1703 move_view(view, request, redraw);
1705 update_view_title(view);
1707 move_view(view, request, TRUE);
1714 report("Nothing to enter");
1717 return view->ops->enter(view, &view->line[view->lineno]);
1721 int nviews = displayed_views();
1722 int next_view = (current_view + 1) % nviews;
1724 if (next_view == current_view) {
1725 report("Only one view is displayed");
1729 current_view = next_view;
1730 /* Blur out the title of the previous view. */
1731 update_view_title(view);
1735 case REQ_TOGGLE_LINENO:
1736 opt_line_number = !opt_line_number;
1740 case REQ_TOGGLE_REV_GRAPH:
1741 opt_rev_graph = !opt_rev_graph;
1746 /* Always reload^Wrerun commands from the prompt. */
1747 open_view(view, opt_request, OPEN_RELOAD);
1750 case REQ_STOP_LOADING:
1751 for (i = 0; i < ARRAY_SIZE(views); i++) {
1754 report("Stopped loading the %s view", view->name),
1759 case REQ_SHOW_VERSION:
1760 report("%s (built %s)", VERSION, __DATE__);
1763 case REQ_SCREEN_RESIZE:
1766 case REQ_SCREEN_REDRAW:
1770 case REQ_SCREEN_UPDATE:
1774 case REQ_VIEW_CLOSE:
1775 /* XXX: Mark closed views by letting view->parent point to the
1776 * view itself. Parents to closed view should never be
1779 view->parent->parent != view->parent) {
1780 memset(display, 0, sizeof(display));
1782 display[current_view] = view->parent;
1783 view->parent = view;
1793 /* An unknown key will show most commonly used commands. */
1794 report("Unknown key, press 'h' for help");
1807 pager_draw(struct view *view, struct line *line, unsigned int lineno)
1809 char *text = line->data;
1810 enum line_type type = line->type;
1811 int textlen = strlen(text);
1814 wmove(view->win, lineno, 0);
1816 if (view->offset + lineno == view->lineno) {
1817 if (type == LINE_COMMIT) {
1818 string_copy(view->ref, text + 7);
1819 string_copy(ref_commit, view->ref);
1823 wchgat(view->win, -1, 0, type, NULL);
1826 attr = get_line_attr(type);
1827 wattrset(view->win, attr);
1829 if (opt_line_number || opt_tab_size < TABSIZE) {
1830 static char spaces[] = " ";
1831 int col_offset = 0, col = 0;
1833 if (opt_line_number) {
1834 unsigned long real_lineno = view->offset + lineno + 1;
1836 if (real_lineno == 1 ||
1837 (real_lineno % opt_num_interval) == 0) {
1838 wprintw(view->win, "%.*d", view->digits, real_lineno);
1841 waddnstr(view->win, spaces,
1842 MIN(view->digits, STRING_SIZE(spaces)));
1844 waddstr(view->win, ": ");
1845 col_offset = view->digits + 2;
1848 while (text && col_offset + col < view->width) {
1849 int cols_max = view->width - col_offset - col;
1853 if (*text == '\t') {
1855 assert(sizeof(spaces) > TABSIZE);
1857 cols = opt_tab_size - (col % opt_tab_size);
1860 text = strchr(text, '\t');
1861 cols = line ? text - pos : strlen(pos);
1864 waddnstr(view->win, pos, MIN(cols, cols_max));
1869 int col = 0, pos = 0;
1871 for (; pos < textlen && col < view->width; pos++, col++)
1872 if (text[pos] == '\t')
1873 col += TABSIZE - (col % TABSIZE) - 1;
1875 waddnstr(view->win, text, pos);
1882 add_pager_refs(struct view *view, struct line *line)
1885 char *data = line->data;
1887 int bufpos = 0, refpos = 0;
1888 const char *sep = "Refs: ";
1890 assert(line->type == LINE_COMMIT);
1892 refs = get_refs(data + STRING_SIZE("commit "));
1897 struct ref *ref = refs[refpos];
1898 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
1900 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
1903 } while (refs[refpos++]->next);
1905 if (!realloc_lines(view, view->line_size + 1))
1908 line = &view->line[view->lines];
1909 line->data = strdup(buf);
1913 line->type = LINE_PP_REFS;
1918 pager_read(struct view *view, char *data)
1920 struct line *line = &view->line[view->lines];
1922 line->data = strdup(data);
1926 line->type = get_line_type(line->data);
1929 if (line->type == LINE_COMMIT &&
1930 (view == VIEW(REQ_VIEW_DIFF) ||
1931 view == VIEW(REQ_VIEW_LOG)))
1932 add_pager_refs(view, line);
1938 pager_enter(struct view *view, struct line *line)
1942 if (line->type == LINE_COMMIT &&
1943 (view == VIEW(REQ_VIEW_LOG) ||
1944 view == VIEW(REQ_VIEW_PAGER))) {
1945 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
1949 /* Always scroll the view even if it was split. That way
1950 * you can use Enter to scroll through the log view and
1951 * split open each commit diff. */
1952 scroll_view(view, REQ_SCROLL_LINE_DOWN);
1954 /* FIXME: A minor workaround. Scrolling the view will call report("")
1955 * but if we are scrolling a non-current view this won't properly
1956 * update the view title. */
1958 update_view_title(view);
1963 static struct view_ops pager_ops = {
1976 char id[41]; /* SHA1 ID. */
1977 char title[75]; /* First line of the commit message. */
1978 char author[75]; /* Author of the commit. */
1979 struct tm time; /* Date from the author ident. */
1980 struct ref **refs; /* Repository references. */
1981 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
1982 size_t graph_size; /* The width of the graph array. */
1986 main_draw(struct view *view, struct line *line, unsigned int lineno)
1988 char buf[DATE_COLS + 1];
1989 struct commit *commit = line->data;
1990 enum line_type type;
1996 if (!*commit->author)
1999 wmove(view->win, lineno, col);
2001 if (view->offset + lineno == view->lineno) {
2002 string_copy(view->ref, commit->id);
2003 string_copy(ref_commit, view->ref);
2005 wattrset(view->win, get_line_attr(type));
2006 wchgat(view->win, -1, 0, type, NULL);
2009 type = LINE_MAIN_COMMIT;
2010 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2013 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2014 waddnstr(view->win, buf, timelen);
2015 waddstr(view->win, " ");
2018 wmove(view->win, lineno, col);
2019 if (type != LINE_CURSOR)
2020 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2023 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2025 authorlen = strlen(commit->author);
2026 if (authorlen > AUTHOR_COLS - 2) {
2027 authorlen = AUTHOR_COLS - 2;
2033 waddnstr(view->win, commit->author, authorlen);
2034 if (type != LINE_CURSOR)
2035 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2036 waddch(view->win, '~');
2038 waddstr(view->win, commit->author);
2042 if (type != LINE_CURSOR)
2043 wattrset(view->win, A_NORMAL);
2045 if (opt_rev_graph && commit->graph_size) {
2048 wmove(view->win, lineno, col);
2049 /* Using waddch() instead of waddnstr() ensures that
2050 * they'll be rendered correctly for the cursor line. */
2051 for (i = 0; i < commit->graph_size; i++)
2052 waddch(view->win, commit->graph[i]);
2054 col += commit->graph_size + 1;
2057 wmove(view->win, lineno, col);
2063 if (type == LINE_CURSOR)
2065 else if (commit->refs[i]->tag)
2066 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2068 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2069 waddstr(view->win, "[");
2070 waddstr(view->win, commit->refs[i]->name);
2071 waddstr(view->win, "]");
2072 if (type != LINE_CURSOR)
2073 wattrset(view->win, A_NORMAL);
2074 waddstr(view->win, " ");
2075 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2076 } while (commit->refs[i++]->next);
2079 if (type != LINE_CURSOR)
2080 wattrset(view->win, get_line_attr(type));
2083 int titlelen = strlen(commit->title);
2085 if (col + titlelen > view->width)
2086 titlelen = view->width - col;
2088 waddnstr(view->win, commit->title, titlelen);
2094 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2096 main_read(struct view *view, char *line)
2098 enum line_type type = get_line_type(line);
2099 struct commit *commit = view->lines
2100 ? view->line[view->lines - 1].data : NULL;
2104 commit = calloc(1, sizeof(struct commit));
2108 line += STRING_SIZE("commit ");
2110 view->line[view->lines++].data = commit;
2111 string_copy(commit->id, line);
2112 commit->refs = get_refs(commit->id);
2113 commit->graph[commit->graph_size++] = ACS_LTEE;
2118 char *ident = line + STRING_SIZE("author ");
2119 char *end = strchr(ident, '<');
2125 for (; end > ident && isspace(end[-1]); end--) ;
2129 string_copy(commit->author, ident);
2131 /* Parse epoch and timezone */
2133 char *secs = strchr(end + 1, '>');
2137 if (!secs || secs[1] != ' ')
2141 time = (time_t) atol(secs);
2142 zone = strchr(secs, ' ');
2143 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2147 tz = ('0' - zone[1]) * 60 * 60 * 10;
2148 tz += ('0' - zone[2]) * 60 * 60;
2149 tz += ('0' - zone[3]) * 60;
2150 tz += ('0' - zone[4]) * 60;
2157 gmtime_r(&time, &commit->time);
2165 /* Fill in the commit title if it has not already been set. */
2166 if (commit->title[0])
2169 /* Require titles to start with a non-space character at the
2170 * offset used by git log. */
2171 /* FIXME: More gracefull handling of titles; append "..." to
2172 * shortened titles, etc. */
2173 if (strncmp(line, " ", 4) ||
2177 string_copy(commit->title, line + 4);
2184 main_enter(struct view *view, struct line *line)
2186 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2188 open_view(view, REQ_VIEW_DIFF, flags);
2192 static struct view_ops main_ops = {
2201 * Unicode / UTF-8 handling
2203 * NOTE: Much of the following code for dealing with unicode is derived from
2204 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2205 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2208 /* I've (over)annotated a lot of code snippets because I am not entirely
2209 * confident that the approach taken by this small UTF-8 interface is correct.
2213 unicode_width(unsigned long c)
2216 (c <= 0x115f /* Hangul Jamo */
2219 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2221 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2222 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2223 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2224 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2225 || (c >= 0xffe0 && c <= 0xffe6)
2226 || (c >= 0x20000 && c <= 0x2fffd)
2227 || (c >= 0x30000 && c <= 0x3fffd)))
2233 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2234 * Illegal bytes are set one. */
2235 static const unsigned char utf8_bytes[256] = {
2236 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,
2237 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,
2238 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,
2239 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,
2240 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,
2241 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,
2242 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,
2243 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,
2246 /* Decode UTF-8 multi-byte representation into a unicode character. */
2247 static inline unsigned long
2248 utf8_to_unicode(const char *string, size_t length)
2250 unsigned long unicode;
2254 unicode = string[0];
2257 unicode = (string[0] & 0x1f) << 6;
2258 unicode += (string[1] & 0x3f);
2261 unicode = (string[0] & 0x0f) << 12;
2262 unicode += ((string[1] & 0x3f) << 6);
2263 unicode += (string[2] & 0x3f);
2266 unicode = (string[0] & 0x0f) << 18;
2267 unicode += ((string[1] & 0x3f) << 12);
2268 unicode += ((string[2] & 0x3f) << 6);
2269 unicode += (string[3] & 0x3f);
2272 unicode = (string[0] & 0x0f) << 24;
2273 unicode += ((string[1] & 0x3f) << 18);
2274 unicode += ((string[2] & 0x3f) << 12);
2275 unicode += ((string[3] & 0x3f) << 6);
2276 unicode += (string[4] & 0x3f);
2279 unicode = (string[0] & 0x01) << 30;
2280 unicode += ((string[1] & 0x3f) << 24);
2281 unicode += ((string[2] & 0x3f) << 18);
2282 unicode += ((string[3] & 0x3f) << 12);
2283 unicode += ((string[4] & 0x3f) << 6);
2284 unicode += (string[5] & 0x3f);
2287 die("Invalid unicode length");
2290 /* Invalid characters could return the special 0xfffd value but NUL
2291 * should be just as good. */
2292 return unicode > 0xffff ? 0 : unicode;
2295 /* Calculates how much of string can be shown within the given maximum width
2296 * and sets trimmed parameter to non-zero value if all of string could not be
2299 * Additionally, adds to coloffset how many many columns to move to align with
2300 * the expected position. Takes into account how multi-byte and double-width
2301 * characters will effect the cursor position.
2303 * Returns the number of bytes to output from string to satisfy max_width. */
2305 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
2307 const char *start = string;
2308 const char *end = strchr(string, '\0');
2314 while (string < end) {
2315 int c = *(unsigned char *) string;
2316 unsigned char bytes = utf8_bytes[c];
2318 unsigned long unicode;
2320 if (string + bytes > end)
2323 /* Change representation to figure out whether
2324 * it is a single- or double-width character. */
2326 unicode = utf8_to_unicode(string, bytes);
2327 /* FIXME: Graceful handling of invalid unicode character. */
2331 ucwidth = unicode_width(unicode);
2333 if (width > max_width) {
2338 /* The column offset collects the differences between the
2339 * number of bytes encoding a character and the number of
2340 * columns will be used for rendering said character.
2342 * So if some character A is encoded in 2 bytes, but will be
2343 * represented on the screen using only 1 byte this will and up
2344 * adding 1 to the multi-byte column offset.
2346 * Assumes that no double-width character can be encoding in
2347 * less than two bytes. */
2348 if (bytes > ucwidth)
2349 mbwidth += bytes - ucwidth;
2354 *coloffset += mbwidth;
2356 return string - start;
2364 /* Whether or not the curses interface has been initialized. */
2365 static bool cursed = FALSE;
2367 /* The status window is used for polling keystrokes. */
2368 static WINDOW *status_win;
2370 /* Update status and title window. */
2372 report(const char *msg, ...)
2374 static bool empty = TRUE;
2375 struct view *view = display[current_view];
2377 if (!empty || *msg) {
2380 va_start(args, msg);
2383 wmove(status_win, 0, 0);
2385 vwprintw(status_win, msg, args);
2390 wrefresh(status_win);
2395 update_view_title(view);
2396 update_display_cursor();
2399 /* Controls when nodelay should be in effect when polling user input. */
2401 set_nonblocking_input(bool loading)
2403 static unsigned int loading_views;
2405 if ((loading == FALSE && loading_views-- == 1) ||
2406 (loading == TRUE && loading_views++ == 0))
2407 nodelay(status_win, loading);
2415 /* Initialize the curses library */
2416 if (isatty(STDIN_FILENO)) {
2417 cursed = !!initscr();
2419 /* Leave stdin and stdout alone when acting as a pager. */
2420 FILE *io = fopen("/dev/tty", "r+");
2422 cursed = !!newterm(NULL, io, io);
2426 die("Failed to initialize curses");
2428 nonl(); /* Tell curses not to do NL->CR/NL on output */
2429 cbreak(); /* Take input chars one at a time, no wait for \n */
2430 noecho(); /* Don't echo input */
2431 leaveok(stdscr, TRUE);
2436 getmaxyx(stdscr, y, x);
2437 status_win = newwin(1, 0, y - 1, 0);
2439 die("Failed to create status window");
2441 /* Enable keyboard mapping */
2442 keypad(status_win, TRUE);
2443 wbkgdset(status_win, get_line_attr(LINE_STATUS));
2448 * Repository references
2451 static struct ref *refs;
2452 static size_t refs_size;
2454 /* Id <-> ref store */
2455 static struct ref ***id_refs;
2456 static size_t id_refs_size;
2458 static struct ref **
2461 struct ref ***tmp_id_refs;
2462 struct ref **ref_list = NULL;
2463 size_t ref_list_size = 0;
2466 for (i = 0; i < id_refs_size; i++)
2467 if (!strcmp(id, id_refs[i][0]->id))
2470 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
2474 id_refs = tmp_id_refs;
2476 for (i = 0; i < refs_size; i++) {
2479 if (strcmp(id, refs[i].id))
2482 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
2490 if (ref_list_size > 0)
2491 ref_list[ref_list_size - 1]->next = 1;
2492 ref_list[ref_list_size] = &refs[i];
2494 /* XXX: The properties of the commit chains ensures that we can
2495 * safely modify the shared ref. The repo references will
2496 * always be similar for the same id. */
2497 ref_list[ref_list_size]->next = 0;
2502 id_refs[id_refs_size++] = ref_list;
2508 read_ref(char *id, int idlen, char *name, int namelen)
2513 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
2514 /* Commits referenced by tags has "^{}" appended. */
2515 if (name[namelen - 1] != '}')
2518 while (namelen > 0 && name[namelen] != '^')
2522 namelen -= STRING_SIZE("refs/tags/");
2523 name += STRING_SIZE("refs/tags/");
2525 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
2526 namelen -= STRING_SIZE("refs/heads/");
2527 name += STRING_SIZE("refs/heads/");
2529 } else if (!strcmp(name, "HEAD")) {
2533 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
2537 ref = &refs[refs_size++];
2538 ref->name = malloc(namelen + 1);
2542 strncpy(ref->name, name, namelen);
2543 ref->name[namelen] = 0;
2545 string_copy(ref->id, id);
2553 const char *cmd_env = getenv("TIG_LS_REMOTE");
2554 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
2556 return read_properties(popen(cmd, "r"), "\t", read_ref);
2560 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
2562 if (!strcmp(name, "i18n.commitencoding"))
2563 string_copy(opt_encoding, value);
2569 load_repo_config(void)
2571 return read_properties(popen("git repo-config --list", "r"),
2572 "=", read_repo_config_option);
2576 read_properties(FILE *pipe, const char *separators,
2577 int (*read_property)(char *, int, char *, int))
2579 char buffer[BUFSIZ];
2586 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
2591 name = chomp_string(name);
2592 namelen = strcspn(name, separators);
2594 if (name[namelen]) {
2596 value = chomp_string(name + namelen + 1);
2597 valuelen = strlen(value);
2604 state = read_property(name, namelen, value, valuelen);
2607 if (state != ERR && ferror(pipe))
2620 static void __NORETURN
2623 /* XXX: Restore tty modes and let the OS cleanup the rest! */
2629 static void __NORETURN
2630 die(const char *err, ...)
2636 va_start(args, err);
2637 fputs("tig: ", stderr);
2638 vfprintf(stderr, err, args);
2639 fputs("\n", stderr);
2646 main(int argc, char *argv[])
2649 enum request request;
2652 signal(SIGINT, quit);
2654 if (load_options() == ERR)
2655 die("Failed to load user config.");
2657 /* Load the repo config file so options can be overwritten from
2658 * the command line. */
2659 if (load_repo_config() == ERR)
2660 die("Failed to load repo config.");
2662 if (!parse_options(argc, argv))
2665 if (load_refs() == ERR)
2666 die("Failed to load refs.");
2668 /* Require a git repository unless when running in pager mode. */
2669 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
2670 die("Not a git repository");
2672 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2673 view->cmd_env = getenv(view->cmd_env);
2675 request = opt_request;
2679 while (view_driver(display[current_view], request)) {
2683 foreach_view (view, i)
2686 /* Refresh, accept single keystroke of input */
2687 key = wgetch(status_win);
2688 request = get_request(key);
2690 /* Some low-level request handling. This keeps access to
2691 * status_win restricted. */
2695 /* Temporarily switch to line-oriented and echoed
2700 if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) {
2701 memcpy(opt_cmd, "git ", 4);
2702 opt_request = REQ_VIEW_PAGER;
2704 report("Prompt interrupted by loading view, "
2705 "press 'z' to stop loading views");
2706 request = REQ_SCREEN_UPDATE;
2713 case REQ_SCREEN_RESIZE:
2717 getmaxyx(stdscr, height, width);
2719 /* Resize the status view and let the view driver take
2720 * care of resizing the displayed views. */
2721 wresize(status_win, 1, width);
2722 mvwin(status_win, height - 1, 0);
2723 wrefresh(status_win);