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");
1542 static void open_help_view(struct view *view)
1545 int lines = ARRAY_SIZE(req_info) + 2;
1548 if (view->lines > 0)
1551 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1552 if (!req_info[i].request)
1555 view->line = calloc(lines, sizeof(*view->line));
1557 report("Allocation failure");
1561 view->ops->read(view, "Quick reference for tig keybindings:");
1563 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1566 if (!req_info[i].request) {
1567 view->ops->read(view, "");
1568 view->ops->read(view, req_info[i].help);
1572 key = get_key(req_info[i].request);
1573 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1576 view->ops->read(view, buf);
1581 OPEN_DEFAULT = 0, /* Use default view switching. */
1582 OPEN_SPLIT = 1, /* Split current view. */
1583 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1584 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1588 open_view(struct view *prev, enum request request, enum open_flags flags)
1590 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1591 bool split = !!(flags & OPEN_SPLIT);
1592 bool reload = !!(flags & OPEN_RELOAD);
1593 struct view *view = VIEW(request);
1594 int nviews = displayed_views();
1595 struct view *base_view = display[0];
1597 if (view == prev && nviews == 1 && !reload) {
1598 report("Already in %s view", view->name);
1602 if (view == VIEW(REQ_VIEW_HELP)) {
1603 open_help_view(view);
1605 } else if ((reload || strcmp(view->vid, view->id)) &&
1606 !begin_update(view)) {
1607 report("Failed to load %s view", view->name);
1616 /* Maximize the current view. */
1617 memset(display, 0, sizeof(display));
1619 display[current_view] = view;
1622 /* Resize the view when switching between split- and full-screen,
1623 * or when switching between two different full-screen views. */
1624 if (nviews != displayed_views() ||
1625 (nviews == 1 && base_view != display[0]))
1628 if (split && prev->lineno - prev->offset >= prev->height) {
1629 /* Take the title line into account. */
1630 int lines = prev->lineno - prev->offset - prev->height + 1;
1632 /* Scroll the view that was split if the current line is
1633 * outside the new limited view. */
1634 do_scroll_view(prev, lines, TRUE);
1637 if (prev && view != prev) {
1638 if (split && !backgrounded) {
1639 /* "Blur" the previous view. */
1640 update_view_title(prev);
1643 view->parent = prev;
1646 if (view->pipe && view->lines == 0) {
1647 /* Clear the old view and let the incremental updating refill
1656 /* If the view is backgrounded the above calls to report()
1657 * won't redraw the view title. */
1659 update_view_title(view);
1664 * User request switch noodle
1668 view_driver(struct view *view, enum request request)
1675 case REQ_MOVE_PAGE_UP:
1676 case REQ_MOVE_PAGE_DOWN:
1677 case REQ_MOVE_FIRST_LINE:
1678 case REQ_MOVE_LAST_LINE:
1679 move_view(view, request, TRUE);
1682 case REQ_SCROLL_LINE_DOWN:
1683 case REQ_SCROLL_LINE_UP:
1684 case REQ_SCROLL_PAGE_DOWN:
1685 case REQ_SCROLL_PAGE_UP:
1686 scroll_view(view, request);
1693 case REQ_VIEW_PAGER:
1694 open_view(view, request, OPEN_DEFAULT);
1699 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
1701 if (view == VIEW(REQ_VIEW_DIFF) &&
1702 view->parent == VIEW(REQ_VIEW_MAIN)) {
1703 bool redraw = display[1] == view;
1705 view = view->parent;
1706 move_view(view, request, redraw);
1708 update_view_title(view);
1710 move_view(view, request, TRUE);
1717 report("Nothing to enter");
1720 return view->ops->enter(view, &view->line[view->lineno]);
1724 int nviews = displayed_views();
1725 int next_view = (current_view + 1) % nviews;
1727 if (next_view == current_view) {
1728 report("Only one view is displayed");
1732 current_view = next_view;
1733 /* Blur out the title of the previous view. */
1734 update_view_title(view);
1738 case REQ_TOGGLE_LINENO:
1739 opt_line_number = !opt_line_number;
1743 case REQ_TOGGLE_REV_GRAPH:
1744 opt_rev_graph = !opt_rev_graph;
1749 /* Always reload^Wrerun commands from the prompt. */
1750 open_view(view, opt_request, OPEN_RELOAD);
1753 case REQ_STOP_LOADING:
1754 for (i = 0; i < ARRAY_SIZE(views); i++) {
1757 report("Stopped loading the %s view", view->name),
1762 case REQ_SHOW_VERSION:
1763 report("%s (built %s)", VERSION, __DATE__);
1766 case REQ_SCREEN_RESIZE:
1769 case REQ_SCREEN_REDRAW:
1773 case REQ_SCREEN_UPDATE:
1777 case REQ_VIEW_CLOSE:
1778 /* XXX: Mark closed views by letting view->parent point to the
1779 * view itself. Parents to closed view should never be
1782 view->parent->parent != view->parent) {
1783 memset(display, 0, sizeof(display));
1785 display[current_view] = view->parent;
1786 view->parent = view;
1796 /* An unknown key will show most commonly used commands. */
1797 report("Unknown key, press 'h' for help");
1810 pager_draw(struct view *view, struct line *line, unsigned int lineno)
1812 char *text = line->data;
1813 enum line_type type = line->type;
1814 int textlen = strlen(text);
1817 wmove(view->win, lineno, 0);
1819 if (view->offset + lineno == view->lineno) {
1820 if (type == LINE_COMMIT) {
1821 string_copy(view->ref, text + 7);
1822 string_copy(ref_commit, view->ref);
1826 wchgat(view->win, -1, 0, type, NULL);
1829 attr = get_line_attr(type);
1830 wattrset(view->win, attr);
1832 if (opt_line_number || opt_tab_size < TABSIZE) {
1833 static char spaces[] = " ";
1834 int col_offset = 0, col = 0;
1836 if (opt_line_number) {
1837 unsigned long real_lineno = view->offset + lineno + 1;
1839 if (real_lineno == 1 ||
1840 (real_lineno % opt_num_interval) == 0) {
1841 wprintw(view->win, "%.*d", view->digits, real_lineno);
1844 waddnstr(view->win, spaces,
1845 MIN(view->digits, STRING_SIZE(spaces)));
1847 waddstr(view->win, ": ");
1848 col_offset = view->digits + 2;
1851 while (text && col_offset + col < view->width) {
1852 int cols_max = view->width - col_offset - col;
1856 if (*text == '\t') {
1858 assert(sizeof(spaces) > TABSIZE);
1860 cols = opt_tab_size - (col % opt_tab_size);
1863 text = strchr(text, '\t');
1864 cols = line ? text - pos : strlen(pos);
1867 waddnstr(view->win, pos, MIN(cols, cols_max));
1872 int col = 0, pos = 0;
1874 for (; pos < textlen && col < view->width; pos++, col++)
1875 if (text[pos] == '\t')
1876 col += TABSIZE - (col % TABSIZE) - 1;
1878 waddnstr(view->win, text, pos);
1885 add_pager_refs(struct view *view, struct line *line)
1888 char *data = line->data;
1890 int bufpos = 0, refpos = 0;
1891 const char *sep = "Refs: ";
1893 assert(line->type == LINE_COMMIT);
1895 refs = get_refs(data + STRING_SIZE("commit "));
1900 struct ref *ref = refs[refpos];
1901 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
1903 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
1906 } while (refs[refpos++]->next);
1908 if (!realloc_lines(view, view->line_size + 1))
1911 line = &view->line[view->lines];
1912 line->data = strdup(buf);
1916 line->type = LINE_PP_REFS;
1921 pager_read(struct view *view, char *data)
1923 struct line *line = &view->line[view->lines];
1925 line->data = strdup(data);
1929 line->type = get_line_type(line->data);
1932 if (line->type == LINE_COMMIT &&
1933 (view == VIEW(REQ_VIEW_DIFF) ||
1934 view == VIEW(REQ_VIEW_LOG)))
1935 add_pager_refs(view, line);
1941 pager_enter(struct view *view, struct line *line)
1945 if (line->type == LINE_COMMIT &&
1946 (view == VIEW(REQ_VIEW_LOG) ||
1947 view == VIEW(REQ_VIEW_PAGER))) {
1948 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
1952 /* Always scroll the view even if it was split. That way
1953 * you can use Enter to scroll through the log view and
1954 * split open each commit diff. */
1955 scroll_view(view, REQ_SCROLL_LINE_DOWN);
1957 /* FIXME: A minor workaround. Scrolling the view will call report("")
1958 * but if we are scrolling a non-current view this won't properly
1959 * update the view title. */
1961 update_view_title(view);
1966 static struct view_ops pager_ops = {
1979 char id[41]; /* SHA1 ID. */
1980 char title[75]; /* First line of the commit message. */
1981 char author[75]; /* Author of the commit. */
1982 struct tm time; /* Date from the author ident. */
1983 struct ref **refs; /* Repository references. */
1984 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
1985 size_t graph_size; /* The width of the graph array. */
1989 main_draw(struct view *view, struct line *line, unsigned int lineno)
1991 char buf[DATE_COLS + 1];
1992 struct commit *commit = line->data;
1993 enum line_type type;
1999 if (!*commit->author)
2002 wmove(view->win, lineno, col);
2004 if (view->offset + lineno == view->lineno) {
2005 string_copy(view->ref, commit->id);
2006 string_copy(ref_commit, view->ref);
2008 wattrset(view->win, get_line_attr(type));
2009 wchgat(view->win, -1, 0, type, NULL);
2012 type = LINE_MAIN_COMMIT;
2013 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2016 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2017 waddnstr(view->win, buf, timelen);
2018 waddstr(view->win, " ");
2021 wmove(view->win, lineno, col);
2022 if (type != LINE_CURSOR)
2023 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2026 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2028 authorlen = strlen(commit->author);
2029 if (authorlen > AUTHOR_COLS - 2) {
2030 authorlen = AUTHOR_COLS - 2;
2036 waddnstr(view->win, commit->author, authorlen);
2037 if (type != LINE_CURSOR)
2038 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2039 waddch(view->win, '~');
2041 waddstr(view->win, commit->author);
2045 if (type != LINE_CURSOR)
2046 wattrset(view->win, A_NORMAL);
2048 if (opt_rev_graph && commit->graph_size) {
2051 wmove(view->win, lineno, col);
2052 /* Using waddch() instead of waddnstr() ensures that
2053 * they'll be rendered correctly for the cursor line. */
2054 for (i = 0; i < commit->graph_size; i++)
2055 waddch(view->win, commit->graph[i]);
2057 col += commit->graph_size + 1;
2060 wmove(view->win, lineno, col);
2066 if (type == LINE_CURSOR)
2068 else if (commit->refs[i]->tag)
2069 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2071 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2072 waddstr(view->win, "[");
2073 waddstr(view->win, commit->refs[i]->name);
2074 waddstr(view->win, "]");
2075 if (type != LINE_CURSOR)
2076 wattrset(view->win, A_NORMAL);
2077 waddstr(view->win, " ");
2078 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2079 } while (commit->refs[i++]->next);
2082 if (type != LINE_CURSOR)
2083 wattrset(view->win, get_line_attr(type));
2086 int titlelen = strlen(commit->title);
2088 if (col + titlelen > view->width)
2089 titlelen = view->width - col;
2091 waddnstr(view->win, commit->title, titlelen);
2097 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2099 main_read(struct view *view, char *line)
2101 enum line_type type = get_line_type(line);
2102 struct commit *commit = view->lines
2103 ? view->line[view->lines - 1].data : NULL;
2107 commit = calloc(1, sizeof(struct commit));
2111 line += STRING_SIZE("commit ");
2113 view->line[view->lines++].data = commit;
2114 string_copy(commit->id, line);
2115 commit->refs = get_refs(commit->id);
2116 commit->graph[commit->graph_size++] = ACS_LTEE;
2121 char *ident = line + STRING_SIZE("author ");
2122 char *end = strchr(ident, '<');
2128 for (; end > ident && isspace(end[-1]); end--) ;
2132 string_copy(commit->author, ident);
2134 /* Parse epoch and timezone */
2136 char *secs = strchr(end + 1, '>');
2140 if (!secs || secs[1] != ' ')
2144 time = (time_t) atol(secs);
2145 zone = strchr(secs, ' ');
2146 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2150 tz = ('0' - zone[1]) * 60 * 60 * 10;
2151 tz += ('0' - zone[2]) * 60 * 60;
2152 tz += ('0' - zone[3]) * 60;
2153 tz += ('0' - zone[4]) * 60;
2160 gmtime_r(&time, &commit->time);
2168 /* Fill in the commit title if it has not already been set. */
2169 if (commit->title[0])
2172 /* Require titles to start with a non-space character at the
2173 * offset used by git log. */
2174 /* FIXME: More gracefull handling of titles; append "..." to
2175 * shortened titles, etc. */
2176 if (strncmp(line, " ", 4) ||
2180 string_copy(commit->title, line + 4);
2187 main_enter(struct view *view, struct line *line)
2189 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2191 open_view(view, REQ_VIEW_DIFF, flags);
2195 static struct view_ops main_ops = {
2204 * Unicode / UTF-8 handling
2206 * NOTE: Much of the following code for dealing with unicode is derived from
2207 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2208 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2211 /* I've (over)annotated a lot of code snippets because I am not entirely
2212 * confident that the approach taken by this small UTF-8 interface is correct.
2216 unicode_width(unsigned long c)
2219 (c <= 0x115f /* Hangul Jamo */
2222 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
2224 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
2225 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
2226 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
2227 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
2228 || (c >= 0xffe0 && c <= 0xffe6)
2229 || (c >= 0x20000 && c <= 0x2fffd)
2230 || (c >= 0x30000 && c <= 0x3fffd)))
2236 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2237 * Illegal bytes are set one. */
2238 static const unsigned char utf8_bytes[256] = {
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 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,
2243 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,
2244 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,
2245 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,
2246 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,
2249 /* Decode UTF-8 multi-byte representation into a unicode character. */
2250 static inline unsigned long
2251 utf8_to_unicode(const char *string, size_t length)
2253 unsigned long unicode;
2257 unicode = string[0];
2260 unicode = (string[0] & 0x1f) << 6;
2261 unicode += (string[1] & 0x3f);
2264 unicode = (string[0] & 0x0f) << 12;
2265 unicode += ((string[1] & 0x3f) << 6);
2266 unicode += (string[2] & 0x3f);
2269 unicode = (string[0] & 0x0f) << 18;
2270 unicode += ((string[1] & 0x3f) << 12);
2271 unicode += ((string[2] & 0x3f) << 6);
2272 unicode += (string[3] & 0x3f);
2275 unicode = (string[0] & 0x0f) << 24;
2276 unicode += ((string[1] & 0x3f) << 18);
2277 unicode += ((string[2] & 0x3f) << 12);
2278 unicode += ((string[3] & 0x3f) << 6);
2279 unicode += (string[4] & 0x3f);
2282 unicode = (string[0] & 0x01) << 30;
2283 unicode += ((string[1] & 0x3f) << 24);
2284 unicode += ((string[2] & 0x3f) << 18);
2285 unicode += ((string[3] & 0x3f) << 12);
2286 unicode += ((string[4] & 0x3f) << 6);
2287 unicode += (string[5] & 0x3f);
2290 die("Invalid unicode length");
2293 /* Invalid characters could return the special 0xfffd value but NUL
2294 * should be just as good. */
2295 return unicode > 0xffff ? 0 : unicode;
2298 /* Calculates how much of string can be shown within the given maximum width
2299 * and sets trimmed parameter to non-zero value if all of string could not be
2302 * Additionally, adds to coloffset how many many columns to move to align with
2303 * the expected position. Takes into account how multi-byte and double-width
2304 * characters will effect the cursor position.
2306 * Returns the number of bytes to output from string to satisfy max_width. */
2308 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
2310 const char *start = string;
2311 const char *end = strchr(string, '\0');
2317 while (string < end) {
2318 int c = *(unsigned char *) string;
2319 unsigned char bytes = utf8_bytes[c];
2321 unsigned long unicode;
2323 if (string + bytes > end)
2326 /* Change representation to figure out whether
2327 * it is a single- or double-width character. */
2329 unicode = utf8_to_unicode(string, bytes);
2330 /* FIXME: Graceful handling of invalid unicode character. */
2334 ucwidth = unicode_width(unicode);
2336 if (width > max_width) {
2341 /* The column offset collects the differences between the
2342 * number of bytes encoding a character and the number of
2343 * columns will be used for rendering said character.
2345 * So if some character A is encoded in 2 bytes, but will be
2346 * represented on the screen using only 1 byte this will and up
2347 * adding 1 to the multi-byte column offset.
2349 * Assumes that no double-width character can be encoding in
2350 * less than two bytes. */
2351 if (bytes > ucwidth)
2352 mbwidth += bytes - ucwidth;
2357 *coloffset += mbwidth;
2359 return string - start;
2367 /* Whether or not the curses interface has been initialized. */
2368 static bool cursed = FALSE;
2370 /* The status window is used for polling keystrokes. */
2371 static WINDOW *status_win;
2373 /* Update status and title window. */
2375 report(const char *msg, ...)
2377 static bool empty = TRUE;
2378 struct view *view = display[current_view];
2380 if (!empty || *msg) {
2383 va_start(args, msg);
2386 wmove(status_win, 0, 0);
2388 vwprintw(status_win, msg, args);
2393 wrefresh(status_win);
2398 update_view_title(view);
2399 update_display_cursor();
2402 /* Controls when nodelay should be in effect when polling user input. */
2404 set_nonblocking_input(bool loading)
2406 static unsigned int loading_views;
2408 if ((loading == FALSE && loading_views-- == 1) ||
2409 (loading == TRUE && loading_views++ == 0))
2410 nodelay(status_win, loading);
2418 /* Initialize the curses library */
2419 if (isatty(STDIN_FILENO)) {
2420 cursed = !!initscr();
2422 /* Leave stdin and stdout alone when acting as a pager. */
2423 FILE *io = fopen("/dev/tty", "r+");
2425 cursed = !!newterm(NULL, io, io);
2429 die("Failed to initialize curses");
2431 nonl(); /* Tell curses not to do NL->CR/NL on output */
2432 cbreak(); /* Take input chars one at a time, no wait for \n */
2433 noecho(); /* Don't echo input */
2434 leaveok(stdscr, TRUE);
2439 getmaxyx(stdscr, y, x);
2440 status_win = newwin(1, 0, y - 1, 0);
2442 die("Failed to create status window");
2444 /* Enable keyboard mapping */
2445 keypad(status_win, TRUE);
2446 wbkgdset(status_win, get_line_attr(LINE_STATUS));
2451 * Repository references
2454 static struct ref *refs;
2455 static size_t refs_size;
2457 /* Id <-> ref store */
2458 static struct ref ***id_refs;
2459 static size_t id_refs_size;
2461 static struct ref **
2464 struct ref ***tmp_id_refs;
2465 struct ref **ref_list = NULL;
2466 size_t ref_list_size = 0;
2469 for (i = 0; i < id_refs_size; i++)
2470 if (!strcmp(id, id_refs[i][0]->id))
2473 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
2477 id_refs = tmp_id_refs;
2479 for (i = 0; i < refs_size; i++) {
2482 if (strcmp(id, refs[i].id))
2485 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
2493 if (ref_list_size > 0)
2494 ref_list[ref_list_size - 1]->next = 1;
2495 ref_list[ref_list_size] = &refs[i];
2497 /* XXX: The properties of the commit chains ensures that we can
2498 * safely modify the shared ref. The repo references will
2499 * always be similar for the same id. */
2500 ref_list[ref_list_size]->next = 0;
2505 id_refs[id_refs_size++] = ref_list;
2511 read_ref(char *id, int idlen, char *name, int namelen)
2516 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
2517 /* Commits referenced by tags has "^{}" appended. */
2518 if (name[namelen - 1] != '}')
2521 while (namelen > 0 && name[namelen] != '^')
2525 namelen -= STRING_SIZE("refs/tags/");
2526 name += STRING_SIZE("refs/tags/");
2528 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
2529 namelen -= STRING_SIZE("refs/heads/");
2530 name += STRING_SIZE("refs/heads/");
2532 } else if (!strcmp(name, "HEAD")) {
2536 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
2540 ref = &refs[refs_size++];
2541 ref->name = malloc(namelen + 1);
2545 strncpy(ref->name, name, namelen);
2546 ref->name[namelen] = 0;
2548 string_copy(ref->id, id);
2556 const char *cmd_env = getenv("TIG_LS_REMOTE");
2557 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
2559 return read_properties(popen(cmd, "r"), "\t", read_ref);
2563 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
2565 if (!strcmp(name, "i18n.commitencoding"))
2566 string_copy(opt_encoding, value);
2572 load_repo_config(void)
2574 return read_properties(popen("git repo-config --list", "r"),
2575 "=", read_repo_config_option);
2579 read_properties(FILE *pipe, const char *separators,
2580 int (*read_property)(char *, int, char *, int))
2582 char buffer[BUFSIZ];
2589 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
2594 name = chomp_string(name);
2595 namelen = strcspn(name, separators);
2597 if (name[namelen]) {
2599 value = chomp_string(name + namelen + 1);
2600 valuelen = strlen(value);
2607 state = read_property(name, namelen, value, valuelen);
2610 if (state != ERR && ferror(pipe))
2623 static void __NORETURN
2626 /* XXX: Restore tty modes and let the OS cleanup the rest! */
2632 static void __NORETURN
2633 die(const char *err, ...)
2639 va_start(args, err);
2640 fputs("tig: ", stderr);
2641 vfprintf(stderr, err, args);
2642 fputs("\n", stderr);
2649 main(int argc, char *argv[])
2652 enum request request;
2655 signal(SIGINT, quit);
2657 if (load_options() == ERR)
2658 die("Failed to load user config.");
2660 /* Load the repo config file so options can be overwritten from
2661 * the command line. */
2662 if (load_repo_config() == ERR)
2663 die("Failed to load repo config.");
2665 if (!parse_options(argc, argv))
2668 if (load_refs() == ERR)
2669 die("Failed to load refs.");
2671 /* Require a git repository unless when running in pager mode. */
2672 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
2673 die("Not a git repository");
2675 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
2676 view->cmd_env = getenv(view->cmd_env);
2678 request = opt_request;
2682 while (view_driver(display[current_view], request)) {
2686 foreach_view (view, i)
2689 /* Refresh, accept single keystroke of input */
2690 key = wgetch(status_win);
2691 request = get_request(key);
2693 /* Some low-level request handling. This keeps access to
2694 * status_win restricted. */
2698 /* Temporarily switch to line-oriented and echoed
2703 if (wgetnstr(status_win, opt_cmd + 4, sizeof(opt_cmd) - 4) == OK) {
2704 memcpy(opt_cmd, "git ", 4);
2705 opt_request = REQ_VIEW_PAGER;
2707 report("Prompt interrupted by loading view, "
2708 "press 'z' to stop loading views");
2709 request = REQ_SCREEN_UPDATE;
2716 case REQ_SCREEN_RESIZE:
2720 getmaxyx(stdscr, height, width);
2722 /* Resize the status view and let the view driver take
2723 * care of resizing the displayed views. */
2724 wresize(status_win, 1, width);
2725 mvwin(status_win, height - 1, 0);
2726 wrefresh(status_win);