1 /* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #define VERSION "tig-0.4.git"
33 #include <sys/types.h>
43 #define __NORETURN __attribute__((__noreturn__))
48 static void __NORETURN die(const char *err, ...);
49 static void report(const char *msg, ...);
50 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, int, char *, int));
51 static void set_nonblocking_input(bool loading);
52 static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
54 #define ABS(x) ((x) >= 0 ? (x) : -(x))
55 #define MIN(x, y) ((x) < (y) ? (x) : (y))
57 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
58 #define STRING_SIZE(x) (sizeof(x) - 1)
60 #define SIZEOF_STR 1024 /* Default string size. */
61 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
62 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
63 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
65 /* Size of rev graph with no "padding" columns */
66 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
68 /* This color name can be used to refer to the default term colors. */
69 #define COLOR_DEFAULT (-1)
71 #define ICONV_NONE ((iconv_t) -1)
73 /* The format and size of the date column in the main view. */
74 #define DATE_FORMAT "%Y-%m-%d %H:%M"
75 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
77 #define AUTHOR_COLS 20
79 /* The default interval between line numbers. */
80 #define NUMBER_INTERVAL 1
84 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
86 #define TIG_LS_REMOTE \
87 "git ls-remote . 2>/dev/null"
89 #define TIG_DIFF_CMD \
90 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
93 "git log --cc --stat -n100 %s 2>/dev/null"
95 #define TIG_MAIN_CMD \
96 "git log --topo-order --pretty=raw %s 2>/dev/null"
98 #define TIG_TREE_CMD \
101 #define TIG_BLOB_CMD \
102 "git cat-file blob %s"
104 /* XXX: Needs to be defined to the empty string. */
105 #define TIG_HELP_CMD ""
106 #define TIG_PAGER_CMD ""
108 /* Some ascii-shorthands fitted into the ncurses namespace. */
110 #define KEY_RETURN '\r'
115 char *name; /* Ref name; tag or head names are shortened. */
116 char id[SIZEOF_REV]; /* Commit SHA1 ID */
117 unsigned int tag:1; /* Is it a tag? */
118 unsigned int next:1; /* For ref lists: are there more refs? */
121 static struct ref **get_refs(char *id);
130 set_from_int_map(struct int_map *map, size_t map_size,
131 int *value, const char *name, int namelen)
136 for (i = 0; i < map_size; i++)
137 if (namelen == map[i].namelen &&
138 !strncasecmp(name, map[i].name, namelen)) {
139 *value = map[i].value;
152 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
154 if (srclen > dstlen - 1)
157 strncpy(dst, src, srclen);
161 /* Shorthands for safely copying into a fixed buffer. */
163 #define string_copy(dst, src) \
164 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
166 #define string_ncopy(dst, src, srclen) \
167 string_ncopy_do(dst, sizeof(dst), src, srclen)
170 chomp_string(char *name)
174 while (isspace(*name))
177 namelen = strlen(name) - 1;
178 while (namelen > 0 && isspace(name[namelen]))
185 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
188 size_t pos = bufpos ? *bufpos : 0;
191 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
197 return pos >= bufsize ? FALSE : TRUE;
200 #define string_format(buf, fmt, args...) \
201 string_nformat(buf, sizeof(buf), NULL, fmt, args)
203 #define string_format_from(buf, from, fmt, args...) \
204 string_nformat(buf, sizeof(buf), from, fmt, args)
207 string_enum_compare(const char *str1, const char *str2, int len)
211 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
213 /* Diff-Header == DIFF_HEADER */
214 for (i = 0; i < len; i++) {
215 if (toupper(str1[i]) == toupper(str2[i]))
218 if (string_enum_sep(str1[i]) &&
219 string_enum_sep(str2[i]))
222 return str1[i] - str2[i];
230 * NOTE: The following is a slightly modified copy of the git project's shell
231 * quoting routines found in the quote.c file.
233 * Help to copy the thing properly quoted for the shell safety. any single
234 * quote is replaced with '\'', any exclamation point is replaced with '\!',
235 * and the whole thing is enclosed in a
238 * original sq_quote result
239 * name ==> name ==> 'name'
240 * a b ==> a b ==> 'a b'
241 * a'b ==> a'\''b ==> 'a'\''b'
242 * a!b ==> a'\!'b ==> 'a'\!'b'
246 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
250 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
253 while ((c = *src++)) {
254 if (c == '\'' || c == '!') {
274 /* XXX: Keep the view request first and in sync with views[]. */ \
275 REQ_GROUP("View switching") \
276 REQ_(VIEW_MAIN, "Show main view"), \
277 REQ_(VIEW_DIFF, "Show diff view"), \
278 REQ_(VIEW_LOG, "Show log view"), \
279 REQ_(VIEW_TREE, "Show tree view"), \
280 REQ_(VIEW_BLOB, "Show blob view"), \
281 REQ_(VIEW_HELP, "Show help page"), \
282 REQ_(VIEW_PAGER, "Show pager view"), \
284 REQ_GROUP("View manipulation") \
285 REQ_(ENTER, "Enter current line and scroll"), \
286 REQ_(NEXT, "Move to next"), \
287 REQ_(PREVIOUS, "Move to previous"), \
288 REQ_(VIEW_NEXT, "Move focus to next view"), \
289 REQ_(VIEW_CLOSE, "Close the current view"), \
290 REQ_(QUIT, "Close all views and quit"), \
292 REQ_GROUP("Cursor navigation") \
293 REQ_(MOVE_UP, "Move cursor one line up"), \
294 REQ_(MOVE_DOWN, "Move cursor one line down"), \
295 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
296 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
297 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
298 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
300 REQ_GROUP("Scrolling") \
301 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
302 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
303 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
304 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
306 REQ_GROUP("Searching") \
307 REQ_(SEARCH, "Search the view"), \
308 REQ_(SEARCH_BACK, "Search backwards in the view"), \
309 REQ_(FIND_NEXT, "Find next search match"), \
310 REQ_(FIND_PREV, "Find previous search match"), \
313 REQ_(NONE, "Do nothing"), \
314 REQ_(PROMPT, "Bring up the prompt"), \
315 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
316 REQ_(SCREEN_RESIZE, "Resize the screen"), \
317 REQ_(SHOW_VERSION, "Show version information"), \
318 REQ_(STOP_LOADING, "Stop all loading views"), \
319 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
320 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
323 /* User action requests. */
325 #define REQ_GROUP(help)
326 #define REQ_(req, help) REQ_##req
328 /* Offset all requests to avoid conflicts with ncurses getch values. */
329 REQ_OFFSET = KEY_MAX + 1,
337 struct request_info {
338 enum request request;
344 static struct request_info req_info[] = {
345 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
346 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
353 get_request(const char *name)
355 int namelen = strlen(name);
358 for (i = 0; i < ARRAY_SIZE(req_info); i++)
359 if (req_info[i].namelen == namelen &&
360 !string_enum_compare(req_info[i].name, name, namelen))
361 return req_info[i].request;
371 static const char usage[] =
372 VERSION " (" __DATE__ ")\n"
374 "Usage: tig [options]\n"
375 " or: tig [options] [--] [git log options]\n"
376 " or: tig [options] log [git log options]\n"
377 " or: tig [options] diff [git diff options]\n"
378 " or: tig [options] show [git show options]\n"
379 " or: tig [options] < [git command output]\n"
382 " -l Start up in log view\n"
383 " -d Start up in diff view\n"
384 " -n[I], --line-number[=I] Show line numbers with given interval\n"
385 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
386 " -- Mark end of tig options\n"
387 " -v, --version Show version and exit\n"
388 " -h, --help Show help message and exit\n";
390 /* Option and state variables. */
391 static bool opt_line_number = FALSE;
392 static bool opt_rev_graph = TRUE;
393 static int opt_num_interval = NUMBER_INTERVAL;
394 static int opt_tab_size = TABSIZE;
395 static enum request opt_request = REQ_VIEW_MAIN;
396 static char opt_cmd[SIZEOF_STR] = "";
397 static char opt_path[SIZEOF_STR] = "";
398 static FILE *opt_pipe = NULL;
399 static char opt_encoding[20] = "UTF-8";
400 static bool opt_utf8 = TRUE;
401 static char opt_codeset[20] = "UTF-8";
402 static iconv_t opt_iconv = ICONV_NONE;
403 static char opt_search[SIZEOF_STR] = "";
411 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
421 int namelen = strlen(name);
425 if (strncmp(opt, name, namelen))
428 if (opt[namelen] == '=')
429 value = opt + namelen + 1;
432 if (!short_name || opt[1] != short_name)
437 va_start(args, type);
438 if (type == OPT_INT) {
439 number = va_arg(args, int *);
441 *number = atoi(value);
448 /* Returns the index of log or diff command or -1 to exit. */
450 parse_options(int argc, char *argv[])
454 for (i = 1; i < argc; i++) {
457 if (!strcmp(opt, "-l")) {
458 opt_request = REQ_VIEW_LOG;
462 if (!strcmp(opt, "-d")) {
463 opt_request = REQ_VIEW_DIFF;
467 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
468 opt_line_number = TRUE;
472 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
473 opt_tab_size = MIN(opt_tab_size, TABSIZE);
477 if (check_option(opt, 'v', "version", OPT_NONE)) {
478 printf("tig version %s\n", VERSION);
482 if (check_option(opt, 'h', "help", OPT_NONE)) {
487 if (!strcmp(opt, "--")) {
492 if (!strcmp(opt, "log") ||
493 !strcmp(opt, "diff") ||
494 !strcmp(opt, "show")) {
495 opt_request = opt[0] == 'l'
496 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
500 if (opt[0] && opt[0] != '-')
503 die("unknown option '%s'\n\n%s", opt, usage);
506 if (!isatty(STDIN_FILENO)) {
507 opt_request = REQ_VIEW_PAGER;
510 } else if (i < argc) {
513 if (opt_request == REQ_VIEW_MAIN)
514 /* XXX: This is vulnerable to the user overriding
515 * options required for the main view parser. */
516 string_copy(opt_cmd, "git log --stat --pretty=raw");
518 string_copy(opt_cmd, "git");
519 buf_size = strlen(opt_cmd);
521 while (buf_size < sizeof(opt_cmd) && i < argc) {
522 opt_cmd[buf_size++] = ' ';
523 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
526 if (buf_size >= sizeof(opt_cmd))
527 die("command too long");
529 opt_cmd[buf_size] = 0;
533 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
541 * Line-oriented content detection.
545 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
546 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
547 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
548 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
549 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
550 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
555 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
556 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
557 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
558 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
559 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
560 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
561 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
562 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
563 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
564 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
565 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
566 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
567 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
568 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
569 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
570 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
571 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
572 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
573 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
574 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
575 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
576 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
577 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
578 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
579 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
580 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
581 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
582 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
583 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
584 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
585 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
588 #define LINE(type, line, fg, bg, attr) \
595 const char *name; /* Option name. */
596 int namelen; /* Size of option name. */
597 const char *line; /* The start of line to match. */
598 int linelen; /* Size of string to match. */
599 int fg, bg, attr; /* Color and text attributes for the lines. */
602 static struct line_info line_info[] = {
603 #define LINE(type, line, fg, bg, attr) \
604 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
609 static enum line_type
610 get_line_type(char *line)
612 int linelen = strlen(line);
615 for (type = 0; type < ARRAY_SIZE(line_info); type++)
616 /* Case insensitive search matches Signed-off-by lines better. */
617 if (linelen >= line_info[type].linelen &&
618 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
625 get_line_attr(enum line_type type)
627 assert(type < ARRAY_SIZE(line_info));
628 return COLOR_PAIR(type) | line_info[type].attr;
631 static struct line_info *
632 get_line_info(char *name, int namelen)
636 for (type = 0; type < ARRAY_SIZE(line_info); type++)
637 if (namelen == line_info[type].namelen &&
638 !string_enum_compare(line_info[type].name, name, namelen))
639 return &line_info[type];
647 int default_bg = COLOR_BLACK;
648 int default_fg = COLOR_WHITE;
653 if (use_default_colors() != ERR) {
658 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
659 struct line_info *info = &line_info[type];
660 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
661 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
663 init_pair(type, fg, bg);
671 unsigned int selected:1;
673 void *data; /* User data */
683 enum request request;
684 struct keybinding *next;
687 static struct keybinding default_keybindings[] = {
689 { 'm', REQ_VIEW_MAIN },
690 { 'd', REQ_VIEW_DIFF },
691 { 'l', REQ_VIEW_LOG },
692 { 't', REQ_VIEW_TREE },
693 { 'f', REQ_VIEW_BLOB },
694 { 'p', REQ_VIEW_PAGER },
695 { 'h', REQ_VIEW_HELP },
697 /* View manipulation */
698 { 'q', REQ_VIEW_CLOSE },
699 { KEY_TAB, REQ_VIEW_NEXT },
700 { KEY_RETURN, REQ_ENTER },
701 { KEY_UP, REQ_PREVIOUS },
702 { KEY_DOWN, REQ_NEXT },
704 /* Cursor navigation */
705 { 'k', REQ_MOVE_UP },
706 { 'j', REQ_MOVE_DOWN },
707 { KEY_HOME, REQ_MOVE_FIRST_LINE },
708 { KEY_END, REQ_MOVE_LAST_LINE },
709 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
710 { ' ', REQ_MOVE_PAGE_DOWN },
711 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
712 { 'b', REQ_MOVE_PAGE_UP },
713 { '-', REQ_MOVE_PAGE_UP },
716 { KEY_IC, REQ_SCROLL_LINE_UP },
717 { KEY_DC, REQ_SCROLL_LINE_DOWN },
718 { 'w', REQ_SCROLL_PAGE_UP },
719 { 's', REQ_SCROLL_PAGE_DOWN },
723 { '?', REQ_SEARCH_BACK },
724 { 'n', REQ_FIND_NEXT },
725 { 'N', REQ_FIND_PREV },
729 { 'z', REQ_STOP_LOADING },
730 { 'v', REQ_SHOW_VERSION },
731 { 'r', REQ_SCREEN_REDRAW },
732 { '.', REQ_TOGGLE_LINENO },
733 { 'g', REQ_TOGGLE_REV_GRAPH },
736 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
739 /* Using the ncurses SIGWINCH handler. */
740 { KEY_RESIZE, REQ_SCREEN_RESIZE },
743 #define KEYMAP_INFO \
754 #define KEYMAP_(name) KEYMAP_##name
759 static struct int_map keymap_table[] = {
760 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
765 #define set_keymap(map, name) \
766 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
768 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
771 add_keybinding(enum keymap keymap, enum request request, int key)
773 struct keybinding *keybinding;
775 keybinding = calloc(1, sizeof(*keybinding));
777 die("Failed to allocate keybinding");
779 keybinding->alias = key;
780 keybinding->request = request;
781 keybinding->next = keybindings[keymap];
782 keybindings[keymap] = keybinding;
785 /* Looks for a key binding first in the given map, then in the generic map, and
786 * lastly in the default keybindings. */
788 get_keybinding(enum keymap keymap, int key)
790 struct keybinding *kbd;
793 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
794 if (kbd->alias == key)
797 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
798 if (kbd->alias == key)
801 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
802 if (default_keybindings[i].alias == key)
803 return default_keybindings[i].request;
805 return (enum request) key;
814 static struct key key_table[] = {
815 { "Enter", KEY_RETURN },
817 { "Backspace", KEY_BACKSPACE },
819 { "Escape", KEY_ESC },
820 { "Left", KEY_LEFT },
821 { "Right", KEY_RIGHT },
823 { "Down", KEY_DOWN },
824 { "Insert", KEY_IC },
825 { "Delete", KEY_DC },
827 { "Home", KEY_HOME },
829 { "PageUp", KEY_PPAGE },
830 { "PageDown", KEY_NPAGE },
840 { "F10", KEY_F(10) },
841 { "F11", KEY_F(11) },
842 { "F12", KEY_F(12) },
846 get_key_value(const char *name)
850 for (i = 0; i < ARRAY_SIZE(key_table); i++)
851 if (!strcasecmp(key_table[i].name, name))
852 return key_table[i].value;
854 if (strlen(name) == 1 && isprint(*name))
861 get_key(enum request request)
863 static char buf[BUFSIZ];
864 static char key_char[] = "'X'";
871 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
872 struct keybinding *keybinding = &default_keybindings[i];
876 if (keybinding->request != request)
879 for (key = 0; key < ARRAY_SIZE(key_table); key++)
880 if (key_table[key].value == keybinding->alias)
881 seq = key_table[key].name;
884 keybinding->alias < 127 &&
885 isprint(keybinding->alias)) {
886 key_char[1] = (char) keybinding->alias;
893 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
894 return "Too many keybindings!";
903 * User config file handling.
906 static struct int_map color_map[] = {
907 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
919 #define set_color(color, name) \
920 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
922 static struct int_map attr_map[] = {
923 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
933 #define set_attribute(attr, name) \
934 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
936 static int config_lineno;
937 static bool config_errors;
938 static char *config_msg;
940 /* Wants: object fgcolor bgcolor [attr] */
942 option_color_command(int argc, char *argv[])
944 struct line_info *info;
946 if (argc != 3 && argc != 4) {
947 config_msg = "Wrong number of arguments given to color command";
951 info = get_line_info(argv[0], strlen(argv[0]));
953 config_msg = "Unknown color name";
957 if (set_color(&info->fg, argv[1]) == ERR ||
958 set_color(&info->bg, argv[2]) == ERR) {
959 config_msg = "Unknown color";
963 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
964 config_msg = "Unknown attribute";
971 /* Wants: name = value */
973 option_set_command(int argc, char *argv[])
976 config_msg = "Wrong number of arguments given to set command";
980 if (strcmp(argv[1], "=")) {
981 config_msg = "No value assigned";
985 if (!strcmp(argv[0], "show-rev-graph")) {
986 opt_rev_graph = (!strcmp(argv[2], "1") ||
987 !strcmp(argv[2], "true") ||
988 !strcmp(argv[2], "yes"));
992 if (!strcmp(argv[0], "line-number-interval")) {
993 opt_num_interval = atoi(argv[2]);
997 if (!strcmp(argv[0], "tab-size")) {
998 opt_tab_size = atoi(argv[2]);
1002 if (!strcmp(argv[0], "commit-encoding")) {
1003 char *arg = argv[2];
1004 int delimiter = *arg;
1007 switch (delimiter) {
1010 for (arg++, i = 0; arg[i]; i++)
1011 if (arg[i] == delimiter) {
1016 string_copy(opt_encoding, arg);
1021 config_msg = "Unknown variable name";
1025 /* Wants: mode request key */
1027 option_bind_command(int argc, char *argv[])
1029 enum request request;
1034 config_msg = "Wrong number of arguments given to bind command";
1038 if (set_keymap(&keymap, argv[0]) == ERR) {
1039 config_msg = "Unknown key map";
1043 key = get_key_value(argv[1]);
1045 config_msg = "Unknown key";
1049 request = get_request(argv[2]);
1050 if (request == REQ_UNKNOWN) {
1051 config_msg = "Unknown request name";
1055 add_keybinding(keymap, request, key);
1061 set_option(char *opt, char *value)
1068 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1069 argv[argc++] = value;
1076 while (isspace(*value))
1080 if (!strcmp(opt, "color"))
1081 return option_color_command(argc, argv);
1083 if (!strcmp(opt, "set"))
1084 return option_set_command(argc, argv);
1086 if (!strcmp(opt, "bind"))
1087 return option_bind_command(argc, argv);
1089 config_msg = "Unknown option command";
1094 read_option(char *opt, int optlen, char *value, int valuelen)
1099 config_msg = "Internal error";
1101 /* Check for comment markers, since read_properties() will
1102 * only ensure opt and value are split at first " \t". */
1103 optlen = strcspn(opt, "#");
1107 if (opt[optlen] != 0) {
1108 config_msg = "No option value";
1112 /* Look for comment endings in the value. */
1113 int len = strcspn(value, "#");
1115 if (len < valuelen) {
1117 value[valuelen] = 0;
1120 status = set_option(opt, value);
1123 if (status == ERR) {
1124 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1125 config_lineno, optlen, opt, config_msg);
1126 config_errors = TRUE;
1129 /* Always keep going if errors are encountered. */
1136 char *home = getenv("HOME");
1137 char buf[SIZEOF_STR];
1141 config_errors = FALSE;
1143 if (!home || !string_format(buf, "%s/.tigrc", home))
1146 /* It's ok that the file doesn't exist. */
1147 file = fopen(buf, "r");
1151 if (read_properties(file, " \t", read_option) == ERR ||
1152 config_errors == TRUE)
1153 fprintf(stderr, "Errors while loading %s.\n", buf);
1166 /* The display array of active views and the index of the current view. */
1167 static struct view *display[2];
1168 static unsigned int current_view;
1170 #define foreach_displayed_view(view, i) \
1171 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1173 #define displayed_views() (display[1] != NULL ? 2 : 1)
1175 /* Current head and commit ID */
1176 static char ref_blob[SIZEOF_REF] = "";
1177 static char ref_commit[SIZEOF_REF] = "HEAD";
1178 static char ref_head[SIZEOF_REF] = "HEAD";
1181 const char *name; /* View name */
1182 const char *cmd_fmt; /* Default command line format */
1183 const char *cmd_env; /* Command line set via environment */
1184 const char *id; /* Points to either of ref_{head,commit,blob} */
1186 struct view_ops *ops; /* View operations */
1188 enum keymap keymap; /* What keymap does this view have */
1190 char cmd[SIZEOF_STR]; /* Command buffer */
1191 char ref[SIZEOF_REF]; /* Hovered commit reference */
1192 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1194 int height, width; /* The width and height of the main window */
1195 WINDOW *win; /* The main window */
1196 WINDOW *title; /* The title window living below the main window */
1199 unsigned long offset; /* Offset of the window top */
1200 unsigned long lineno; /* Current line number */
1203 char grep[SIZEOF_STR]; /* Search string */
1204 regex_t *regex; /* Pre-compiled regex */
1206 /* If non-NULL, points to the view that opened this view. If this view
1207 * is closed tig will switch back to the parent view. */
1208 struct view *parent;
1211 unsigned long lines; /* Total number of lines */
1212 struct line *line; /* Line index */
1213 unsigned long line_size;/* Total number of allocated lines */
1214 unsigned int digits; /* Number of digits in the lines member. */
1222 /* What type of content being displayed. Used in the title bar. */
1224 /* Draw one line; @lineno must be < view->height. */
1225 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1226 /* Read one line; updates view->line. */
1227 bool (*read)(struct view *view, char *data);
1228 /* Depending on view, change display based on current line. */
1229 bool (*enter)(struct view *view, struct line *line);
1230 /* Search for regex in a line. */
1231 bool (*grep)(struct view *view, struct line *line);
1233 void (*select)(struct view *view, struct line *line);
1236 static struct view_ops pager_ops;
1237 static struct view_ops main_ops;
1238 static struct view_ops tree_ops;
1239 static struct view_ops blob_ops;
1241 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1242 { name, cmd, #env, ref, ops, map}
1244 #define VIEW_(id, name, ops, ref) \
1245 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1248 static struct view views[] = {
1249 VIEW_(MAIN, "main", &main_ops, ref_head),
1250 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1251 VIEW_(LOG, "log", &pager_ops, ref_head),
1252 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1253 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1254 VIEW_(HELP, "help", &pager_ops, "static"),
1255 VIEW_(PAGER, "pager", &pager_ops, "static"),
1258 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1260 #define foreach_view(view, i) \
1261 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1263 #define view_is_displayed(view) \
1264 (view == display[0] || view == display[1])
1267 draw_view_line(struct view *view, unsigned int lineno)
1270 bool selected = (view->offset + lineno == view->lineno);
1272 assert(view_is_displayed(view));
1274 if (view->offset + lineno >= view->lines)
1277 line = &view->line[view->offset + lineno];
1280 line->selected = TRUE;
1281 view->ops->select(view, line);
1282 } else if (line->selected) {
1283 line->selected = FALSE;
1284 wmove(view->win, lineno, 0);
1285 wclrtoeol(view->win);
1288 return view->ops->draw(view, line, lineno, selected);
1292 redraw_view_from(struct view *view, int lineno)
1294 assert(0 <= lineno && lineno < view->height);
1296 for (; lineno < view->height; lineno++) {
1297 if (!draw_view_line(view, lineno))
1301 redrawwin(view->win);
1302 wrefresh(view->win);
1306 redraw_view(struct view *view)
1309 redraw_view_from(view, 0);
1314 update_view_title(struct view *view)
1316 assert(view_is_displayed(view));
1318 if (view == display[current_view])
1319 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1321 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1323 werase(view->title);
1324 wmove(view->title, 0, 0);
1327 wprintw(view->title, "[%s] %s", view->name, view->ref);
1329 wprintw(view->title, "[%s]", view->name);
1331 if (view->lines || view->pipe) {
1332 unsigned int view_lines = view->offset + view->height;
1333 unsigned int lines = view->lines
1334 ? MIN(view_lines, view->lines) * 100 / view->lines
1337 wprintw(view->title, " - %s %d of %d (%d%%)",
1345 time_t secs = time(NULL) - view->start_time;
1347 /* Three git seconds are a long time ... */
1349 wprintw(view->title, " %lds", secs);
1352 wmove(view->title, 0, view->width - 1);
1353 wrefresh(view->title);
1357 resize_display(void)
1360 struct view *base = display[0];
1361 struct view *view = display[1] ? display[1] : display[0];
1363 /* Setup window dimensions */
1365 getmaxyx(stdscr, base->height, base->width);
1367 /* Make room for the status window. */
1371 /* Horizontal split. */
1372 view->width = base->width;
1373 view->height = SCALE_SPLIT_VIEW(base->height);
1374 base->height -= view->height;
1376 /* Make room for the title bar. */
1380 /* Make room for the title bar. */
1385 foreach_displayed_view (view, i) {
1387 view->win = newwin(view->height, 0, offset, 0);
1389 die("Failed to create %s view", view->name);
1391 scrollok(view->win, TRUE);
1393 view->title = newwin(1, 0, offset + view->height, 0);
1395 die("Failed to create title window");
1398 wresize(view->win, view->height, view->width);
1399 mvwin(view->win, offset, 0);
1400 mvwin(view->title, offset + view->height, 0);
1403 offset += view->height + 1;
1408 redraw_display(void)
1413 foreach_displayed_view (view, i) {
1415 update_view_title(view);
1420 update_display_cursor(void)
1422 struct view *view = display[current_view];
1424 /* Move the cursor to the right-most column of the cursor line.
1426 * XXX: This could turn out to be a bit expensive, but it ensures that
1427 * the cursor does not jump around. */
1429 wmove(view->win, view->lineno - view->offset, view->width - 1);
1430 wrefresh(view->win);
1438 /* Scrolling backend */
1440 do_scroll_view(struct view *view, int lines)
1442 bool redraw_current_line = FALSE;
1444 /* The rendering expects the new offset. */
1445 view->offset += lines;
1447 assert(0 <= view->offset && view->offset < view->lines);
1450 /* Move current line into the view. */
1451 if (view->lineno < view->offset) {
1452 view->lineno = view->offset;
1453 redraw_current_line = TRUE;
1454 } else if (view->lineno >= view->offset + view->height) {
1455 view->lineno = view->offset + view->height - 1;
1456 redraw_current_line = TRUE;
1459 assert(view->offset <= view->lineno && view->lineno < view->lines);
1461 /* Redraw the whole screen if scrolling is pointless. */
1462 if (view->height < ABS(lines)) {
1466 int line = lines > 0 ? view->height - lines : 0;
1467 int end = line + ABS(lines);
1469 wscrl(view->win, lines);
1471 for (; line < end; line++) {
1472 if (!draw_view_line(view, line))
1476 if (redraw_current_line)
1477 draw_view_line(view, view->lineno - view->offset);
1480 redrawwin(view->win);
1481 wrefresh(view->win);
1485 /* Scroll frontend */
1487 scroll_view(struct view *view, enum request request)
1491 assert(view_is_displayed(view));
1494 case REQ_SCROLL_PAGE_DOWN:
1495 lines = view->height;
1496 case REQ_SCROLL_LINE_DOWN:
1497 if (view->offset + lines > view->lines)
1498 lines = view->lines - view->offset;
1500 if (lines == 0 || view->offset + view->height >= view->lines) {
1501 report("Cannot scroll beyond the last line");
1506 case REQ_SCROLL_PAGE_UP:
1507 lines = view->height;
1508 case REQ_SCROLL_LINE_UP:
1509 if (lines > view->offset)
1510 lines = view->offset;
1513 report("Cannot scroll beyond the first line");
1521 die("request %d not handled in switch", request);
1524 do_scroll_view(view, lines);
1529 move_view(struct view *view, enum request request)
1531 int scroll_steps = 0;
1535 case REQ_MOVE_FIRST_LINE:
1536 steps = -view->lineno;
1539 case REQ_MOVE_LAST_LINE:
1540 steps = view->lines - view->lineno - 1;
1543 case REQ_MOVE_PAGE_UP:
1544 steps = view->height > view->lineno
1545 ? -view->lineno : -view->height;
1548 case REQ_MOVE_PAGE_DOWN:
1549 steps = view->lineno + view->height >= view->lines
1550 ? view->lines - view->lineno - 1 : view->height;
1562 die("request %d not handled in switch", request);
1565 if (steps <= 0 && view->lineno == 0) {
1566 report("Cannot move beyond the first line");
1569 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1570 report("Cannot move beyond the last line");
1574 /* Move the current line */
1575 view->lineno += steps;
1576 assert(0 <= view->lineno && view->lineno < view->lines);
1578 /* Check whether the view needs to be scrolled */
1579 if (view->lineno < view->offset ||
1580 view->lineno >= view->offset + view->height) {
1581 scroll_steps = steps;
1582 if (steps < 0 && -steps > view->offset) {
1583 scroll_steps = -view->offset;
1585 } else if (steps > 0) {
1586 if (view->lineno == view->lines - 1 &&
1587 view->lines > view->height) {
1588 scroll_steps = view->lines - view->offset - 1;
1589 if (scroll_steps >= view->height)
1590 scroll_steps -= view->height - 1;
1595 if (!view_is_displayed(view)) {
1596 view->offset += steps;
1597 view->ops->select(view, &view->line[view->lineno]);
1601 /* Repaint the old "current" line if we be scrolling */
1602 if (ABS(steps) < view->height)
1603 draw_view_line(view, view->lineno - steps - view->offset);
1606 do_scroll_view(view, scroll_steps);
1610 /* Draw the current line */
1611 draw_view_line(view, view->lineno - view->offset);
1613 redrawwin(view->win);
1614 wrefresh(view->win);
1623 static void search_view(struct view *view, enum request request);
1626 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1628 assert(view_is_displayed(view));
1630 if (!view->ops->grep(view, line))
1633 if (lineno - view->offset >= view->height) {
1634 view->offset = lineno;
1635 view->lineno = lineno;
1639 unsigned long old_lineno = view->lineno - view->offset;
1641 view->lineno = lineno;
1642 draw_view_line(view, old_lineno);
1644 draw_view_line(view, view->lineno - view->offset);
1645 redrawwin(view->win);
1646 wrefresh(view->win);
1649 report("Line %ld matches '%s'", lineno + 1, view->grep);
1654 find_next(struct view *view, enum request request)
1656 unsigned long lineno = view->lineno;
1661 report("No previous search");
1663 search_view(view, request);
1673 case REQ_SEARCH_BACK:
1682 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1683 lineno += direction;
1685 /* Note, lineno is unsigned long so will wrap around in which case it
1686 * will become bigger than view->lines. */
1687 for (; lineno < view->lines; lineno += direction) {
1688 struct line *line = &view->line[lineno];
1690 if (find_next_line(view, lineno, line))
1694 report("No match found for '%s'", view->grep);
1698 search_view(struct view *view, enum request request)
1703 regfree(view->regex);
1706 view->regex = calloc(1, sizeof(*view->regex));
1711 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
1712 if (regex_err != 0) {
1713 char buf[SIZEOF_STR] = "unknown error";
1715 regerror(regex_err, view->regex, buf, sizeof(buf));
1716 report("Search failed: %s", buf);
1720 string_copy(view->grep, opt_search);
1722 find_next(view, request);
1726 * Incremental updating
1730 end_update(struct view *view)
1734 set_nonblocking_input(FALSE);
1735 if (view->pipe == stdin)
1743 begin_update(struct view *view)
1745 const char *id = view->id;
1751 string_copy(view->cmd, opt_cmd);
1753 /* When running random commands, the view ref could have become
1754 * invalid so clear it. */
1757 } else if (view == VIEW(REQ_VIEW_TREE)) {
1758 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1760 if (strcmp(view->vid, view->id))
1763 if (!string_format(view->cmd, format, id, opt_path))
1767 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
1769 if (!string_format(view->cmd, format, id, id, id, id, id))
1773 /* Special case for the pager view. */
1775 view->pipe = opt_pipe;
1778 view->pipe = popen(view->cmd, "r");
1784 set_nonblocking_input(TRUE);
1789 string_copy(view->vid, id);
1794 for (i = 0; i < view->lines; i++)
1795 if (view->line[i].data)
1796 free(view->line[i].data);
1802 view->start_time = time(NULL);
1807 static struct line *
1808 realloc_lines(struct view *view, size_t line_size)
1810 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1816 view->line_size = line_size;
1821 update_view(struct view *view)
1823 char in_buffer[BUFSIZ];
1824 char out_buffer[BUFSIZ * 2];
1826 /* The number of lines to read. If too low it will cause too much
1827 * redrawing (and possible flickering), if too high responsiveness
1829 unsigned long lines = view->height;
1830 int redraw_from = -1;
1835 /* Only redraw if lines are visible. */
1836 if (view->offset + view->height >= view->lines)
1837 redraw_from = view->lines - view->offset;
1839 /* FIXME: This is probably not perfect for backgrounded views. */
1840 if (!realloc_lines(view, view->lines + lines))
1843 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1844 size_t linelen = strlen(line);
1847 line[linelen - 1] = 0;
1849 if (opt_iconv != ICONV_NONE) {
1851 size_t inlen = linelen;
1853 char *outbuf = out_buffer;
1854 size_t outlen = sizeof(out_buffer);
1858 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
1859 if (ret != (size_t) -1) {
1861 linelen = strlen(out_buffer);
1865 if (!view->ops->read(view, line))
1875 lines = view->lines;
1876 for (digits = 0; lines; digits++)
1879 /* Keep the displayed view in sync with line number scaling. */
1880 if (digits != view->digits) {
1881 view->digits = digits;
1886 if (!view_is_displayed(view))
1889 if (view == VIEW(REQ_VIEW_TREE)) {
1890 /* Clear the view and redraw everything since the tree sorting
1891 * might have rearranged things. */
1894 } else if (redraw_from >= 0) {
1895 /* If this is an incremental update, redraw the previous line
1896 * since for commits some members could have changed when
1897 * loading the main view. */
1898 if (redraw_from > 0)
1901 /* Incrementally draw avoids flickering. */
1902 redraw_view_from(view, redraw_from);
1905 /* Update the title _after_ the redraw so that if the redraw picks up a
1906 * commit reference in view->ref it'll be available here. */
1907 update_view_title(view);
1910 if (ferror(view->pipe)) {
1911 report("Failed to read: %s", strerror(errno));
1914 } else if (feof(view->pipe)) {
1922 report("Allocation failure");
1934 static void open_help_view(struct view *view)
1937 int lines = ARRAY_SIZE(req_info) + 2;
1940 if (view->lines > 0)
1943 for (i = 0; i < ARRAY_SIZE(req_info); i++)
1944 if (!req_info[i].request)
1947 view->line = calloc(lines, sizeof(*view->line));
1949 report("Allocation failure");
1953 view->ops->read(view, "Quick reference for tig keybindings:");
1955 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
1958 if (!req_info[i].request) {
1959 view->ops->read(view, "");
1960 view->ops->read(view, req_info[i].help);
1964 key = get_key(req_info[i].request);
1965 if (!string_format(buf, "%-25s %s", key, req_info[i].help))
1968 view->ops->read(view, buf);
1973 OPEN_DEFAULT = 0, /* Use default view switching. */
1974 OPEN_SPLIT = 1, /* Split current view. */
1975 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
1976 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
1980 open_view(struct view *prev, enum request request, enum open_flags flags)
1982 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
1983 bool split = !!(flags & OPEN_SPLIT);
1984 bool reload = !!(flags & OPEN_RELOAD);
1985 struct view *view = VIEW(request);
1986 int nviews = displayed_views();
1987 struct view *base_view = display[0];
1989 if (view == prev && nviews == 1 && !reload) {
1990 report("Already in %s view", view->name);
1994 if (view == VIEW(REQ_VIEW_HELP)) {
1995 open_help_view(view);
1997 } else if ((reload || strcmp(view->vid, view->id)) &&
1998 !begin_update(view)) {
1999 report("Failed to load %s view", view->name);
2008 /* Maximize the current view. */
2009 memset(display, 0, sizeof(display));
2011 display[current_view] = view;
2014 /* Resize the view when switching between split- and full-screen,
2015 * or when switching between two different full-screen views. */
2016 if (nviews != displayed_views() ||
2017 (nviews == 1 && base_view != display[0]))
2020 if (split && prev->lineno - prev->offset >= prev->height) {
2021 /* Take the title line into account. */
2022 int lines = prev->lineno - prev->offset - prev->height + 1;
2024 /* Scroll the view that was split if the current line is
2025 * outside the new limited view. */
2026 do_scroll_view(prev, lines);
2029 if (prev && view != prev) {
2030 if (split && !backgrounded) {
2031 /* "Blur" the previous view. */
2032 update_view_title(prev);
2035 view->parent = prev;
2038 if (view->pipe && view->lines == 0) {
2039 /* Clear the old view and let the incremental updating refill
2048 /* If the view is backgrounded the above calls to report()
2049 * won't redraw the view title. */
2051 update_view_title(view);
2056 * User request switch noodle
2060 view_driver(struct view *view, enum request request)
2067 case REQ_MOVE_PAGE_UP:
2068 case REQ_MOVE_PAGE_DOWN:
2069 case REQ_MOVE_FIRST_LINE:
2070 case REQ_MOVE_LAST_LINE:
2071 move_view(view, request);
2074 case REQ_SCROLL_LINE_DOWN:
2075 case REQ_SCROLL_LINE_UP:
2076 case REQ_SCROLL_PAGE_DOWN:
2077 case REQ_SCROLL_PAGE_UP:
2078 scroll_view(view, request);
2083 report("No file chosen, press 't' to open tree view");
2092 case REQ_VIEW_PAGER:
2093 open_view(view, request, OPEN_DEFAULT);
2098 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2100 if ((view == VIEW(REQ_VIEW_DIFF) &&
2101 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2102 (view == VIEW(REQ_VIEW_BLOB) &&
2103 view->parent == VIEW(REQ_VIEW_TREE))) {
2104 view = view->parent;
2105 move_view(view, request);
2106 if (view_is_displayed(view))
2107 update_view_title(view);
2109 move_view(view, request);
2116 report("Nothing to enter");
2119 return view->ops->enter(view, &view->line[view->lineno]);
2123 int nviews = displayed_views();
2124 int next_view = (current_view + 1) % nviews;
2126 if (next_view == current_view) {
2127 report("Only one view is displayed");
2131 current_view = next_view;
2132 /* Blur out the title of the previous view. */
2133 update_view_title(view);
2137 case REQ_TOGGLE_LINENO:
2138 opt_line_number = !opt_line_number;
2142 case REQ_TOGGLE_REV_GRAPH:
2143 opt_rev_graph = !opt_rev_graph;
2148 /* Always reload^Wrerun commands from the prompt. */
2149 open_view(view, opt_request, OPEN_RELOAD);
2153 case REQ_SEARCH_BACK:
2154 search_view(view, request);
2159 find_next(view, request);
2162 case REQ_STOP_LOADING:
2163 for (i = 0; i < ARRAY_SIZE(views); i++) {
2166 report("Stopped loading the %s view", view->name),
2171 case REQ_SHOW_VERSION:
2172 report("%s (built %s)", VERSION, __DATE__);
2175 case REQ_SCREEN_RESIZE:
2178 case REQ_SCREEN_REDRAW:
2186 case REQ_VIEW_CLOSE:
2187 /* XXX: Mark closed views by letting view->parent point to the
2188 * view itself. Parents to closed view should never be
2191 view->parent->parent != view->parent) {
2192 memset(display, 0, sizeof(display));
2194 display[current_view] = view->parent;
2195 view->parent = view;
2205 /* An unknown key will show most commonly used commands. */
2206 report("Unknown key, press 'h' for help");
2219 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2221 char *text = line->data;
2222 enum line_type type = line->type;
2223 int textlen = strlen(text);
2226 wmove(view->win, lineno, 0);
2230 wchgat(view->win, -1, 0, type, NULL);
2233 attr = get_line_attr(type);
2234 wattrset(view->win, attr);
2236 if (opt_line_number || opt_tab_size < TABSIZE) {
2237 static char spaces[] = " ";
2238 int col_offset = 0, col = 0;
2240 if (opt_line_number) {
2241 unsigned long real_lineno = view->offset + lineno + 1;
2243 if (real_lineno == 1 ||
2244 (real_lineno % opt_num_interval) == 0) {
2245 wprintw(view->win, "%.*d", view->digits, real_lineno);
2248 waddnstr(view->win, spaces,
2249 MIN(view->digits, STRING_SIZE(spaces)));
2251 waddstr(view->win, ": ");
2252 col_offset = view->digits + 2;
2255 while (text && col_offset + col < view->width) {
2256 int cols_max = view->width - col_offset - col;
2260 if (*text == '\t') {
2262 assert(sizeof(spaces) > TABSIZE);
2264 cols = opt_tab_size - (col % opt_tab_size);
2267 text = strchr(text, '\t');
2268 cols = line ? text - pos : strlen(pos);
2271 waddnstr(view->win, pos, MIN(cols, cols_max));
2276 int col = 0, pos = 0;
2278 for (; pos < textlen && col < view->width; pos++, col++)
2279 if (text[pos] == '\t')
2280 col += TABSIZE - (col % TABSIZE) - 1;
2282 waddnstr(view->win, text, pos);
2289 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2291 char refbuf[SIZEOF_STR];
2295 if (!string_format(refbuf, "git describe %s", commit_id))
2298 pipe = popen(refbuf, "r");
2302 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2303 ref = chomp_string(ref);
2309 /* This is the only fatal call, since it can "corrupt" the buffer. */
2310 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2317 add_pager_refs(struct view *view, struct line *line)
2319 char buf[SIZEOF_STR];
2320 char *commit_id = line->data + STRING_SIZE("commit ");
2322 size_t bufpos = 0, refpos = 0;
2323 const char *sep = "Refs: ";
2324 bool is_tag = FALSE;
2326 assert(line->type == LINE_COMMIT);
2328 refs = get_refs(commit_id);
2330 if (view == VIEW(REQ_VIEW_DIFF))
2331 goto try_add_describe_ref;
2336 struct ref *ref = refs[refpos];
2337 char *fmt = ref->tag ? "%s[%s]" : "%s%s";
2339 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2344 } while (refs[refpos++]->next);
2346 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2347 try_add_describe_ref:
2348 /* Add <tag>-g<commit_id> "fake" reference. */
2349 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2356 if (!realloc_lines(view, view->line_size + 1))
2359 line = &view->line[view->lines];
2360 line->data = strdup(buf);
2364 line->type = LINE_PP_REFS;
2369 pager_read(struct view *view, char *data)
2371 struct line *line = &view->line[view->lines];
2373 line->data = strdup(data);
2377 line->type = get_line_type(line->data);
2380 if (line->type == LINE_COMMIT &&
2381 (view == VIEW(REQ_VIEW_DIFF) ||
2382 view == VIEW(REQ_VIEW_LOG)))
2383 add_pager_refs(view, line);
2389 pager_enter(struct view *view, struct line *line)
2393 if (line->type == LINE_COMMIT &&
2394 (view == VIEW(REQ_VIEW_LOG) ||
2395 view == VIEW(REQ_VIEW_PAGER))) {
2396 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2400 /* Always scroll the view even if it was split. That way
2401 * you can use Enter to scroll through the log view and
2402 * split open each commit diff. */
2403 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2405 /* FIXME: A minor workaround. Scrolling the view will call report("")
2406 * but if we are scrolling a non-current view this won't properly
2407 * update the view title. */
2409 update_view_title(view);
2415 pager_grep(struct view *view, struct line *line)
2418 char *text = line->data;
2423 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2430 pager_select(struct view *view, struct line *line)
2432 if (line->type == LINE_COMMIT) {
2433 char *text = line->data;
2435 string_copy(view->ref, text + STRING_SIZE("commit "));
2436 string_copy(ref_commit, view->ref);
2440 static struct view_ops pager_ops = {
2454 /* Parse output from git-ls-tree(1):
2456 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2457 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2458 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2459 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2462 #define SIZEOF_TREE_ATTR \
2463 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2465 #define TREE_UP_FORMAT "040000 tree %s\t.."
2468 tree_compare_entry(enum line_type type1, char *name1,
2469 enum line_type type2, char *name2)
2471 if (type1 != type2) {
2472 if (type1 == LINE_TREE_DIR)
2477 return strcmp(name1, name2);
2481 tree_read(struct view *view, char *text)
2483 size_t textlen = strlen(text);
2484 char buf[SIZEOF_STR];
2486 enum line_type type;
2487 bool first_read = view->lines == 0;
2489 if (textlen <= SIZEOF_TREE_ATTR)
2492 type = text[STRING_SIZE("100644 ")] == 't'
2493 ? LINE_TREE_DIR : LINE_TREE_FILE;
2496 /* Add path info line */
2497 if (string_format(buf, "Directory path /%s", opt_path) &&
2498 realloc_lines(view, view->line_size + 1) &&
2499 pager_read(view, buf))
2500 view->line[view->lines - 1].type = LINE_DEFAULT;
2504 /* Insert "link" to parent directory. */
2506 string_format(buf, TREE_UP_FORMAT, view->ref) &&
2507 realloc_lines(view, view->line_size + 1) &&
2508 pager_read(view, buf))
2509 view->line[view->lines - 1].type = LINE_TREE_DIR;
2514 /* Strip the path part ... */
2516 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2517 size_t striplen = strlen(opt_path);
2518 char *path = text + SIZEOF_TREE_ATTR;
2520 if (pathlen > striplen)
2521 memmove(path, path + striplen,
2522 pathlen - striplen + 1);
2525 /* Skip "Directory ..." and ".." line. */
2526 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2527 struct line *line = &view->line[pos];
2528 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2529 char *path2 = text + SIZEOF_TREE_ATTR;
2530 int cmp = tree_compare_entry(line->type, path1, type, path2);
2535 text = strdup(text);
2539 if (view->lines > pos)
2540 memmove(&view->line[pos + 1], &view->line[pos],
2541 (view->lines - pos) * sizeof(*line));
2543 line = &view->line[pos];
2550 if (!pager_read(view, text))
2553 /* Move the current line to the first tree entry. */
2557 view->line[view->lines - 1].type = type;
2562 tree_enter(struct view *view, struct line *line)
2564 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2565 enum request request;
2567 switch (line->type) {
2569 /* Depending on whether it is a subdir or parent (updir?) link
2570 * mangle the path buffer. */
2571 if (line == &view->line[1] && *opt_path) {
2572 size_t path_len = strlen(opt_path);
2573 char *dirsep = opt_path + path_len - 1;
2575 while (dirsep > opt_path && dirsep[-1] != '/')
2581 size_t pathlen = strlen(opt_path);
2582 size_t origlen = pathlen;
2583 char *data = line->data;
2584 char *basename = data + SIZEOF_TREE_ATTR;
2586 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
2587 opt_path[origlen] = 0;
2592 /* Trees and subtrees share the same ID, so they are not not
2593 * unique like blobs. */
2594 flags |= OPEN_RELOAD;
2595 request = REQ_VIEW_TREE;
2598 case LINE_TREE_FILE:
2599 request = REQ_VIEW_BLOB;
2606 open_view(view, request, flags);
2612 tree_select(struct view *view, struct line *line)
2614 char *text = line->data;
2616 text += STRING_SIZE("100644 blob ");
2618 if (line->type == LINE_TREE_FILE) {
2619 string_ncopy(ref_blob, text, 40);
2620 /* Also update the blob view's ref, since all there must always
2622 string_copy(VIEW(REQ_VIEW_BLOB)->ref, ref_blob);
2624 } else if (line->type != LINE_TREE_DIR) {
2628 string_ncopy(view->ref, text, 40);
2631 static struct view_ops tree_ops = {
2641 blob_read(struct view *view, char *line)
2643 bool state = pager_read(view, line);
2646 view->line[view->lines - 1].type = LINE_DEFAULT;
2651 static struct view_ops blob_ops = {
2666 char id[SIZEOF_REV]; /* SHA1 ID. */
2667 char title[75]; /* First line of the commit message. */
2668 char author[75]; /* Author of the commit. */
2669 struct tm time; /* Date from the author ident. */
2670 struct ref **refs; /* Repository references. */
2671 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
2672 size_t graph_size; /* The width of the graph array. */
2676 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2678 char buf[DATE_COLS + 1];
2679 struct commit *commit = line->data;
2680 enum line_type type;
2686 if (!*commit->author)
2689 wmove(view->win, lineno, col);
2693 wattrset(view->win, get_line_attr(type));
2694 wchgat(view->win, -1, 0, type, NULL);
2697 type = LINE_MAIN_COMMIT;
2698 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
2701 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
2702 waddnstr(view->win, buf, timelen);
2703 waddstr(view->win, " ");
2706 wmove(view->win, lineno, col);
2707 if (type != LINE_CURSOR)
2708 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
2711 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
2713 authorlen = strlen(commit->author);
2714 if (authorlen > AUTHOR_COLS - 2) {
2715 authorlen = AUTHOR_COLS - 2;
2721 waddnstr(view->win, commit->author, authorlen);
2722 if (type != LINE_CURSOR)
2723 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
2724 waddch(view->win, '~');
2726 waddstr(view->win, commit->author);
2730 if (type != LINE_CURSOR)
2731 wattrset(view->win, A_NORMAL);
2733 if (opt_rev_graph && commit->graph_size) {
2736 wmove(view->win, lineno, col);
2737 /* Using waddch() instead of waddnstr() ensures that
2738 * they'll be rendered correctly for the cursor line. */
2739 for (i = 0; i < commit->graph_size; i++)
2740 waddch(view->win, commit->graph[i]);
2742 col += commit->graph_size + 1;
2745 wmove(view->win, lineno, col);
2751 if (type == LINE_CURSOR)
2753 else if (commit->refs[i]->tag)
2754 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
2756 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
2757 waddstr(view->win, "[");
2758 waddstr(view->win, commit->refs[i]->name);
2759 waddstr(view->win, "]");
2760 if (type != LINE_CURSOR)
2761 wattrset(view->win, A_NORMAL);
2762 waddstr(view->win, " ");
2763 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
2764 } while (commit->refs[i++]->next);
2767 if (type != LINE_CURSOR)
2768 wattrset(view->win, get_line_attr(type));
2771 int titlelen = strlen(commit->title);
2773 if (col + titlelen > view->width)
2774 titlelen = view->width - col;
2776 waddnstr(view->win, commit->title, titlelen);
2784 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
2788 /* The current stack of revisions on the graph. */
2789 static struct rev_stack graph_stacks[2];
2790 static unsigned int graph_stack_no;
2792 /* Parents of the commit being visualized. */
2793 static struct rev_stack graph_parents;
2796 push_rev_stack(struct rev_stack *stack, char *parent)
2798 fprintf(stderr, " (%s)", parent);
2800 /* Combine duplicate parents lines. */
2801 if (stack->size > 0 &&
2802 !strncmp(stack->rev[stack->size - 1], parent, SIZEOF_REV))
2805 if (stack->size < SIZEOF_REVITEMS) {
2806 string_ncopy(stack->rev[stack->size++], parent, SIZEOF_REV);
2811 update_rev_graph(struct commit *commit)
2813 struct rev_stack *stack = &graph_stacks[graph_stack_no++ & 1];
2814 struct rev_stack *graph = &graph_stacks[graph_stack_no & 1];
2815 size_t stackpos = 0;
2818 // FIXME: Initial commit ... assert(rev_graph_commit == commit);
2819 fprintf(stderr, "\n%p <%s> ", graph, commit->id);
2821 /* First traverse all lines of revisions up to the active one. */
2822 for (stackpos = 0; stackpos < stack->size; stackpos++) {
2823 if (!strcmp(stack->rev[stackpos], commit->id)) {
2824 while (stackpos + 1< stack->size &&
2825 !strcmp(stack->rev[stackpos + 1], commit->id))
2830 push_rev_stack(graph, stack->rev[stackpos]);
2831 commit->graph[commit->graph_size++] = ACS_VLINE;
2832 commit->graph[commit->graph_size++] = ' ';
2835 assert(commit->graph_size < ARRAY_SIZE(commit->graph));
2837 for (i = 0; i < graph_parents.size; i++)
2838 push_rev_stack(graph, graph_parents.rev[i]);
2840 /* Place the symbol for this commit. */
2841 if (graph_parents.size == 0)
2842 commit->graph[commit->graph_size++] = 'I';
2843 else if (graph_parents.size > 1)
2844 commit->graph[commit->graph_size++] = 'M';
2845 else if (stackpos >= stack->size)
2846 commit->graph[commit->graph_size++] = '+';
2848 commit->graph[commit->graph_size++] = '*';
2852 /* FIXME: Moving branches left and right when collapsing a branch. */
2853 while (stackpos < stack->size) {
2854 push_rev_stack(graph, stack->rev[stackpos++]);
2855 commit->graph[commit->graph_size++] = ' ';
2856 commit->graph[commit->graph_size++] = ACS_VLINE;
2859 stack->size = graph_parents.size = 0;
2862 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2864 main_read(struct view *view, char *line)
2866 enum line_type type = get_line_type(line);
2867 struct commit *commit = view->lines
2868 ? view->line[view->lines - 1].data : NULL;
2872 commit = calloc(1, sizeof(struct commit));
2876 line += STRING_SIZE("commit ");
2878 view->line[view->lines++].data = commit;
2879 string_copy(commit->id, line);
2880 commit->refs = get_refs(commit->id);
2881 fprintf(stderr, "\n%p [%s]", &graph_stacks[graph_stack_no], commit->id);
2886 line += STRING_SIZE("parent ");
2887 push_rev_stack(&graph_parents, line);
2893 char *ident = line + STRING_SIZE("author ");
2894 char *end = strchr(ident, '<');
2899 update_rev_graph(commit);
2902 char *email = end + 1;
2904 for (; end > ident && isspace(end[-1]); end--) ;
2906 if (end == ident && *email) {
2908 end = strchr(ident, '>');
2909 for (; end > ident && isspace(end[-1]); end--) ;
2914 /* End is NULL or ident meaning there's no author. */
2918 string_copy(commit->author, ident);
2920 /* Parse epoch and timezone */
2922 char *secs = strchr(end + 1, '>');
2926 if (!secs || secs[1] != ' ')
2930 time = (time_t) atol(secs);
2931 zone = strchr(secs, ' ');
2932 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
2936 tz = ('0' - zone[1]) * 60 * 60 * 10;
2937 tz += ('0' - zone[2]) * 60 * 60;
2938 tz += ('0' - zone[3]) * 60;
2939 tz += ('0' - zone[4]) * 60;
2946 gmtime_r(&time, &commit->time);
2954 /* Fill in the commit title if it has not already been set. */
2955 if (commit->title[0])
2958 /* Require titles to start with a non-space character at the
2959 * offset used by git log. */
2960 /* FIXME: More gracefull handling of titles; append "..." to
2961 * shortened titles, etc. */
2962 if (strncmp(line, " ", 4) ||
2966 string_copy(commit->title, line + 4);
2973 main_enter(struct view *view, struct line *line)
2975 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
2977 open_view(view, REQ_VIEW_DIFF, flags);
2982 main_grep(struct view *view, struct line *line)
2984 struct commit *commit = line->data;
2985 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
2986 char buf[DATE_COLS + 1];
2989 for (state = S_TITLE; state < S_END; state++) {
2993 case S_TITLE: text = commit->title; break;
2994 case S_AUTHOR: text = commit->author; break;
2996 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3005 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3013 main_select(struct view *view, struct line *line)
3015 struct commit *commit = line->data;
3017 string_copy(view->ref, commit->id);
3018 string_copy(ref_commit, view->ref);
3021 static struct view_ops main_ops = {
3032 * Unicode / UTF-8 handling
3034 * NOTE: Much of the following code for dealing with unicode is derived from
3035 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3036 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3039 /* I've (over)annotated a lot of code snippets because I am not entirely
3040 * confident that the approach taken by this small UTF-8 interface is correct.
3044 unicode_width(unsigned long c)
3047 (c <= 0x115f /* Hangul Jamo */
3050 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
3052 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3053 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3054 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3055 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3056 || (c >= 0xffe0 && c <= 0xffe6)
3057 || (c >= 0x20000 && c <= 0x2fffd)
3058 || (c >= 0x30000 && c <= 0x3fffd)))
3064 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3065 * Illegal bytes are set one. */
3066 static const unsigned char utf8_bytes[256] = {
3067 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,
3068 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,
3069 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,
3070 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,
3071 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,
3072 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,
3073 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,
3074 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,
3077 /* Decode UTF-8 multi-byte representation into a unicode character. */
3078 static inline unsigned long
3079 utf8_to_unicode(const char *string, size_t length)
3081 unsigned long unicode;
3085 unicode = string[0];
3088 unicode = (string[0] & 0x1f) << 6;
3089 unicode += (string[1] & 0x3f);
3092 unicode = (string[0] & 0x0f) << 12;
3093 unicode += ((string[1] & 0x3f) << 6);
3094 unicode += (string[2] & 0x3f);
3097 unicode = (string[0] & 0x0f) << 18;
3098 unicode += ((string[1] & 0x3f) << 12);
3099 unicode += ((string[2] & 0x3f) << 6);
3100 unicode += (string[3] & 0x3f);
3103 unicode = (string[0] & 0x0f) << 24;
3104 unicode += ((string[1] & 0x3f) << 18);
3105 unicode += ((string[2] & 0x3f) << 12);
3106 unicode += ((string[3] & 0x3f) << 6);
3107 unicode += (string[4] & 0x3f);
3110 unicode = (string[0] & 0x01) << 30;
3111 unicode += ((string[1] & 0x3f) << 24);
3112 unicode += ((string[2] & 0x3f) << 18);
3113 unicode += ((string[3] & 0x3f) << 12);
3114 unicode += ((string[4] & 0x3f) << 6);
3115 unicode += (string[5] & 0x3f);
3118 die("Invalid unicode length");
3121 /* Invalid characters could return the special 0xfffd value but NUL
3122 * should be just as good. */
3123 return unicode > 0xffff ? 0 : unicode;
3126 /* Calculates how much of string can be shown within the given maximum width
3127 * and sets trimmed parameter to non-zero value if all of string could not be
3130 * Additionally, adds to coloffset how many many columns to move to align with
3131 * the expected position. Takes into account how multi-byte and double-width
3132 * characters will effect the cursor position.
3134 * Returns the number of bytes to output from string to satisfy max_width. */
3136 utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3138 const char *start = string;
3139 const char *end = strchr(string, '\0');
3145 while (string < end) {
3146 int c = *(unsigned char *) string;
3147 unsigned char bytes = utf8_bytes[c];
3149 unsigned long unicode;
3151 if (string + bytes > end)
3154 /* Change representation to figure out whether
3155 * it is a single- or double-width character. */
3157 unicode = utf8_to_unicode(string, bytes);
3158 /* FIXME: Graceful handling of invalid unicode character. */
3162 ucwidth = unicode_width(unicode);
3164 if (width > max_width) {
3169 /* The column offset collects the differences between the
3170 * number of bytes encoding a character and the number of
3171 * columns will be used for rendering said character.
3173 * So if some character A is encoded in 2 bytes, but will be
3174 * represented on the screen using only 1 byte this will and up
3175 * adding 1 to the multi-byte column offset.
3177 * Assumes that no double-width character can be encoding in
3178 * less than two bytes. */
3179 if (bytes > ucwidth)
3180 mbwidth += bytes - ucwidth;
3185 *coloffset += mbwidth;
3187 return string - start;
3195 /* Whether or not the curses interface has been initialized. */
3196 static bool cursed = FALSE;
3198 /* The status window is used for polling keystrokes. */
3199 static WINDOW *status_win;
3201 /* Update status and title window. */
3203 report(const char *msg, ...)
3205 static bool empty = TRUE;
3206 struct view *view = display[current_view];
3208 if (!empty || *msg) {
3211 va_start(args, msg);
3214 wmove(status_win, 0, 0);
3216 vwprintw(status_win, msg, args);
3221 wrefresh(status_win);
3226 update_view_title(view);
3227 update_display_cursor();
3230 /* Controls when nodelay should be in effect when polling user input. */
3232 set_nonblocking_input(bool loading)
3234 static unsigned int loading_views;
3236 if ((loading == FALSE && loading_views-- == 1) ||
3237 (loading == TRUE && loading_views++ == 0))
3238 nodelay(status_win, loading);
3246 /* Initialize the curses library */
3247 if (isatty(STDIN_FILENO)) {
3248 cursed = !!initscr();
3250 /* Leave stdin and stdout alone when acting as a pager. */
3251 FILE *io = fopen("/dev/tty", "r+");
3254 die("Failed to open /dev/tty");
3255 cursed = !!newterm(NULL, io, io);
3259 die("Failed to initialize curses");
3261 nonl(); /* Tell curses not to do NL->CR/NL on output */
3262 cbreak(); /* Take input chars one at a time, no wait for \n */
3263 noecho(); /* Don't echo input */
3264 leaveok(stdscr, TRUE);
3269 getmaxyx(stdscr, y, x);
3270 status_win = newwin(1, 0, y - 1, 0);
3272 die("Failed to create status window");
3274 /* Enable keyboard mapping */
3275 keypad(status_win, TRUE);
3276 wbkgdset(status_win, get_line_attr(LINE_STATUS));
3280 read_prompt(const char *prompt)
3282 enum { READING, STOP, CANCEL } status = READING;
3283 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
3286 while (status == READING) {
3290 foreach_view (view, i)
3293 report("%s%.*s", prompt, pos, buf);
3294 /* Refresh, accept single keystroke of input */
3295 key = wgetch(status_win);
3300 status = pos ? STOP : CANCEL;
3318 if (pos >= sizeof(buf)) {
3319 report("Input string too long");
3324 buf[pos++] = (char) key;
3328 if (status == CANCEL) {
3329 /* Clear the status window */
3340 * Repository references
3343 static struct ref *refs;
3344 static size_t refs_size;
3346 /* Id <-> ref store */
3347 static struct ref ***id_refs;
3348 static size_t id_refs_size;
3350 static struct ref **
3353 struct ref ***tmp_id_refs;
3354 struct ref **ref_list = NULL;
3355 size_t ref_list_size = 0;
3358 for (i = 0; i < id_refs_size; i++)
3359 if (!strcmp(id, id_refs[i][0]->id))
3362 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
3366 id_refs = tmp_id_refs;
3368 for (i = 0; i < refs_size; i++) {
3371 if (strcmp(id, refs[i].id))
3374 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
3382 if (ref_list_size > 0)
3383 ref_list[ref_list_size - 1]->next = 1;
3384 ref_list[ref_list_size] = &refs[i];
3386 /* XXX: The properties of the commit chains ensures that we can
3387 * safely modify the shared ref. The repo references will
3388 * always be similar for the same id. */
3389 ref_list[ref_list_size]->next = 0;
3394 id_refs[id_refs_size++] = ref_list;
3400 read_ref(char *id, int idlen, char *name, int namelen)
3405 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3406 /* Commits referenced by tags has "^{}" appended. */
3407 if (name[namelen - 1] != '}')
3410 while (namelen > 0 && name[namelen] != '^')
3414 namelen -= STRING_SIZE("refs/tags/");
3415 name += STRING_SIZE("refs/tags/");
3417 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3418 namelen -= STRING_SIZE("refs/heads/");
3419 name += STRING_SIZE("refs/heads/");
3421 } else if (!strcmp(name, "HEAD")) {
3425 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
3429 ref = &refs[refs_size++];
3430 ref->name = malloc(namelen + 1);
3434 strncpy(ref->name, name, namelen);
3435 ref->name[namelen] = 0;
3437 string_copy(ref->id, id);
3445 const char *cmd_env = getenv("TIG_LS_REMOTE");
3446 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
3448 return read_properties(popen(cmd, "r"), "\t", read_ref);
3452 read_repo_config_option(char *name, int namelen, char *value, int valuelen)
3454 if (!strcmp(name, "i18n.commitencoding"))
3455 string_copy(opt_encoding, value);
3461 load_repo_config(void)
3463 return read_properties(popen("git repo-config --list", "r"),
3464 "=", read_repo_config_option);
3468 read_properties(FILE *pipe, const char *separators,
3469 int (*read_property)(char *, int, char *, int))
3471 char buffer[BUFSIZ];
3478 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
3483 name = chomp_string(name);
3484 namelen = strcspn(name, separators);
3486 if (name[namelen]) {
3488 value = chomp_string(name + namelen + 1);
3489 valuelen = strlen(value);
3496 state = read_property(name, namelen, value, valuelen);
3499 if (state != ERR && ferror(pipe))
3512 static void __NORETURN
3515 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3521 static void __NORETURN
3522 die(const char *err, ...)
3528 va_start(args, err);
3529 fputs("tig: ", stderr);
3530 vfprintf(stderr, err, args);
3531 fputs("\n", stderr);
3538 main(int argc, char *argv[])
3541 enum request request;
3544 signal(SIGINT, quit);
3546 if (setlocale(LC_ALL, "")) {
3547 string_copy(opt_codeset, nl_langinfo(CODESET));
3550 if (load_options() == ERR)
3551 die("Failed to load user config.");
3553 /* Load the repo config file so options can be overwritten from
3554 * the command line. */
3555 if (load_repo_config() == ERR)
3556 die("Failed to load repo config.");
3558 if (!parse_options(argc, argv))
3561 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
3562 opt_iconv = iconv_open(opt_codeset, opt_encoding);
3563 if (opt_iconv == ICONV_NONE)
3564 die("Failed to initialize character set conversion");
3567 if (load_refs() == ERR)
3568 die("Failed to load refs.");
3570 /* Require a git repository unless when running in pager mode. */
3571 if (refs_size == 0 && opt_request != REQ_VIEW_PAGER)
3572 die("Not a git repository");
3574 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
3575 view->cmd_env = getenv(view->cmd_env);
3577 request = opt_request;
3581 while (view_driver(display[current_view], request)) {
3585 foreach_view (view, i)
3588 /* Refresh, accept single keystroke of input */
3589 key = wgetch(status_win);
3591 request = get_keybinding(display[current_view]->keymap, key);
3593 /* Some low-level request handling. This keeps access to
3594 * status_win restricted. */
3598 char *cmd = read_prompt(":");
3600 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
3601 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
3602 opt_request = REQ_VIEW_DIFF;
3604 opt_request = REQ_VIEW_PAGER;
3613 case REQ_SEARCH_BACK:
3615 const char *prompt = request == REQ_SEARCH
3617 char *search = read_prompt(prompt);
3620 string_copy(opt_search, search);
3625 case REQ_SCREEN_RESIZE:
3629 getmaxyx(stdscr, height, width);
3631 /* Resize the status view and let the view driver take
3632 * care of resizing the displayed views. */
3633 wresize(status_win, 1, width);
3634 mvwin(status_win, height - 1, 0);
3635 wrefresh(status_win);