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_REVGRAPH 19 /* Size of revision ancestry graphics. */
64 /* This color name can be used to refer to the default term colors. */
65 #define COLOR_DEFAULT (-1)
67 #define ICONV_NONE ((iconv_t) -1)
69 /* The format and size of the date column in the main view. */
70 #define DATE_FORMAT "%Y-%m-%d %H:%M"
71 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
73 #define AUTHOR_COLS 20
75 /* The default interval between line numbers. */
76 #define NUMBER_INTERVAL 1
80 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
82 #define TIG_LS_REMOTE \
83 "git ls-remote . 2>/dev/null"
85 #define TIG_DIFF_CMD \
86 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
89 "git log --cc --stat -n100 %s 2>/dev/null"
91 #define TIG_MAIN_CMD \
92 "git log --topo-order --pretty=raw %s 2>/dev/null"
94 #define TIG_TREE_CMD \
97 #define TIG_BLOB_CMD \
98 "git cat-file blob %s"
100 /* XXX: Needs to be defined to the empty string. */
101 #define TIG_HELP_CMD ""
102 #define TIG_PAGER_CMD ""
104 /* Some ascii-shorthands fitted into the ncurses namespace. */
106 #define KEY_RETURN '\r'
111 char *name
; /* Ref name; tag or head names are shortened. */
112 char id
[41]; /* Commit SHA1 ID */
113 unsigned int tag
:1; /* Is it a tag? */
114 unsigned int next
:1; /* For ref lists: are there more refs? */
117 static struct ref
**get_refs(char *id
);
126 set_from_int_map(struct int_map
*map
, size_t map_size
,
127 int *value
, const char *name
, int namelen
)
132 for (i
= 0; i
< map_size
; i
++)
133 if (namelen
== map
[i
].namelen
&&
134 !strncasecmp(name
, map
[i
].name
, namelen
)) {
135 *value
= map
[i
].value
;
148 string_ncopy_do(char *dst
, size_t dstlen
, const char *src
, size_t srclen
)
150 if (srclen
> dstlen
- 1)
153 strncpy(dst
, src
, srclen
);
157 /* Shorthands for safely copying into a fixed buffer. */
159 #define string_copy(dst, src) \
160 string_ncopy_do(dst, sizeof(dst), src, sizeof(dst))
162 #define string_ncopy(dst, src, srclen) \
163 string_ncopy_do(dst, sizeof(dst), src, srclen)
166 chomp_string(char *name
)
170 while (isspace(*name
))
173 namelen
= strlen(name
) - 1;
174 while (namelen
> 0 && isspace(name
[namelen
]))
181 string_nformat(char *buf
, size_t bufsize
, size_t *bufpos
, const char *fmt
, ...)
184 size_t pos
= bufpos ?
*bufpos
: 0;
187 pos
+= vsnprintf(buf
+ pos
, bufsize
- pos
, fmt
, args
);
193 return pos
>= bufsize ? FALSE
: TRUE
;
196 #define string_format(buf, fmt, args...) \
197 string_nformat(buf, sizeof(buf), NULL, fmt, args)
199 #define string_format_from(buf, from, fmt, args...) \
200 string_nformat(buf, sizeof(buf), from, fmt, args)
203 string_enum_compare(const char *str1
, const char *str2
, int len
)
207 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
209 /* Diff-Header == DIFF_HEADER */
210 for (i
= 0; i
< len
; i
++) {
211 if (toupper(str1
[i
]) == toupper(str2
[i
]))
214 if (string_enum_sep(str1
[i
]) &&
215 string_enum_sep(str2
[i
]))
218 return str1
[i
] - str2
[i
];
226 * NOTE: The following is a slightly modified copy of the git project's shell
227 * quoting routines found in the quote.c file.
229 * Help to copy the thing properly quoted for the shell safety. any single
230 * quote is replaced with '\'', any exclamation point is replaced with '\!',
231 * and the whole thing is enclosed in a
234 * original sq_quote result
235 * name ==> name ==> 'name'
236 * a b ==> a b ==> 'a b'
237 * a'b ==> a'\''b ==> 'a'\''b'
238 * a!b ==> a'\!'b ==> 'a'\!'b'
242 sq_quote(char buf
[SIZEOF_STR
], size_t bufsize
, const char *src
)
246 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
249 while ((c
= *src
++)) {
250 if (c
== '\'' || c
== '!') {
270 /* XXX: Keep the view request first and in sync with views[]. */ \
271 REQ_GROUP("View switching") \
272 REQ_(VIEW_MAIN, "Show main view"), \
273 REQ_(VIEW_DIFF, "Show diff view"), \
274 REQ_(VIEW_LOG, "Show log view"), \
275 REQ_(VIEW_TREE, "Show tree view"), \
276 REQ_(VIEW_BLOB, "Show blob view"), \
277 REQ_(VIEW_HELP, "Show help page"), \
278 REQ_(VIEW_PAGER, "Show pager view"), \
280 REQ_GROUP("View manipulation") \
281 REQ_(ENTER, "Enter current line and scroll"), \
282 REQ_(NEXT, "Move to next"), \
283 REQ_(PREVIOUS, "Move to previous"), \
284 REQ_(VIEW_NEXT, "Move focus to next view"), \
285 REQ_(VIEW_CLOSE, "Close the current view"), \
286 REQ_(QUIT, "Close all views and quit"), \
288 REQ_GROUP("Cursor navigation") \
289 REQ_(MOVE_UP, "Move cursor one line up"), \
290 REQ_(MOVE_DOWN, "Move cursor one line down"), \
291 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
292 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
293 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
294 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
296 REQ_GROUP("Scrolling") \
297 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
298 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
299 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
300 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
302 REQ_GROUP("Searching") \
303 REQ_(SEARCH, "Search the view"), \
304 REQ_(SEARCH_BACK, "Search backwards in the view"), \
305 REQ_(FIND_NEXT, "Find next search match"), \
306 REQ_(FIND_PREV, "Find previous search match"), \
309 REQ_(NONE, "Do nothing"), \
310 REQ_(PROMPT, "Bring up the prompt"), \
311 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
312 REQ_(SCREEN_RESIZE, "Resize the screen"), \
313 REQ_(SHOW_VERSION, "Show version information"), \
314 REQ_(STOP_LOADING, "Stop all loading views"), \
315 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
316 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization")
319 /* User action requests. */
321 #define REQ_GROUP(help)
322 #define REQ_(req, help) REQ_##req
324 /* Offset all requests to avoid conflicts with ncurses getch values. */
325 REQ_OFFSET
= KEY_MAX
+ 1,
333 struct request_info
{
334 enum request request
;
340 static struct request_info req_info
[] = {
341 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
342 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
349 get_request(const char *name
)
351 int namelen
= strlen(name
);
354 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++)
355 if (req_info
[i
].namelen
== namelen
&&
356 !string_enum_compare(req_info
[i
].name
, name
, namelen
))
357 return req_info
[i
].request
;
367 static const char usage
[] =
368 VERSION
" (" __DATE__
")\n"
370 "Usage: tig [options]\n"
371 " or: tig [options] [--] [git log options]\n"
372 " or: tig [options] log [git log options]\n"
373 " or: tig [options] diff [git diff options]\n"
374 " or: tig [options] show [git show options]\n"
375 " or: tig [options] < [git command output]\n"
378 " -l Start up in log view\n"
379 " -d Start up in diff view\n"
380 " -n[I], --line-number[=I] Show line numbers with given interval\n"
381 " -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
382 " -- Mark end of tig options\n"
383 " -v, --version Show version and exit\n"
384 " -h, --help Show help message and exit\n";
386 /* Option and state variables. */
387 static bool opt_line_number
= FALSE
;
388 static bool opt_rev_graph
= TRUE
;
389 static int opt_num_interval
= NUMBER_INTERVAL
;
390 static int opt_tab_size
= TABSIZE
;
391 static enum request opt_request
= REQ_VIEW_MAIN
;
392 static char opt_cmd
[SIZEOF_STR
] = "";
393 static char opt_path
[SIZEOF_STR
] = "";
394 static FILE *opt_pipe
= NULL
;
395 static char opt_encoding
[20] = "UTF-8";
396 static bool opt_utf8
= TRUE
;
397 static char opt_codeset
[20] = "UTF-8";
398 static iconv_t opt_iconv
= ICONV_NONE
;
399 static char opt_search
[SIZEOF_STR
] = "";
407 check_option(char *opt
, char short_name
, char *name
, enum option_type type
, ...)
417 int namelen
= strlen(name
);
421 if (strncmp(opt
, name
, namelen
))
424 if (opt
[namelen
] == '=')
425 value
= opt
+ namelen
+ 1;
428 if (!short_name
|| opt
[1] != short_name
)
433 va_start(args
, type
);
434 if (type
== OPT_INT
) {
435 number
= va_arg(args
, int *);
437 *number
= atoi(value
);
444 /* Returns the index of log or diff command or -1 to exit. */
446 parse_options(int argc
, char *argv
[])
450 for (i
= 1; i
< argc
; i
++) {
453 if (!strcmp(opt
, "-l")) {
454 opt_request
= REQ_VIEW_LOG
;
458 if (!strcmp(opt
, "-d")) {
459 opt_request
= REQ_VIEW_DIFF
;
463 if (check_option(opt
, 'n', "line-number", OPT_INT
, &opt_num_interval
)) {
464 opt_line_number
= TRUE
;
468 if (check_option(opt
, 'b', "tab-size", OPT_INT
, &opt_tab_size
)) {
469 opt_tab_size
= MIN(opt_tab_size
, TABSIZE
);
473 if (check_option(opt
, 'v', "version", OPT_NONE
)) {
474 printf("tig version %s\n", VERSION
);
478 if (check_option(opt
, 'h', "help", OPT_NONE
)) {
483 if (!strcmp(opt
, "--")) {
488 if (!strcmp(opt
, "log") ||
489 !strcmp(opt
, "diff") ||
490 !strcmp(opt
, "show")) {
491 opt_request
= opt
[0] == 'l'
492 ? REQ_VIEW_LOG
: REQ_VIEW_DIFF
;
496 if (opt
[0] && opt
[0] != '-')
499 die("unknown option '%s'\n\n%s", opt
, usage
);
502 if (!isatty(STDIN_FILENO
)) {
503 opt_request
= REQ_VIEW_PAGER
;
506 } else if (i
< argc
) {
509 if (opt_request
== REQ_VIEW_MAIN
)
510 /* XXX: This is vulnerable to the user overriding
511 * options required for the main view parser. */
512 string_copy(opt_cmd
, "git log --stat --pretty=raw");
514 string_copy(opt_cmd
, "git");
515 buf_size
= strlen(opt_cmd
);
517 while (buf_size
< sizeof(opt_cmd
) && i
< argc
) {
518 opt_cmd
[buf_size
++] = ' ';
519 buf_size
= sq_quote(opt_cmd
, buf_size
, argv
[i
++]);
522 if (buf_size
>= sizeof(opt_cmd
))
523 die("command too long");
525 opt_cmd
[buf_size
] = 0;
529 if (*opt_encoding
&& strcasecmp(opt_encoding
, "UTF-8"))
537 * Line-oriented content detection.
541 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
542 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
543 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
544 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
545 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
546 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
547 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
548 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
549 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
550 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
551 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
552 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
553 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
554 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
555 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
556 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
557 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
558 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
559 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
560 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
561 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
562 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
563 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
564 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
565 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
566 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
567 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
568 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
569 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
570 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
571 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
572 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
573 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
574 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
575 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
576 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
577 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
578 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
579 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
580 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
583 #define LINE(type, line, fg, bg, attr) \
590 const char *name
; /* Option name. */
591 int namelen
; /* Size of option name. */
592 const char *line
; /* The start of line to match. */
593 int linelen
; /* Size of string to match. */
594 int fg
, bg
, attr
; /* Color and text attributes for the lines. */
597 static struct line_info line_info
[] = {
598 #define LINE(type, line, fg, bg, attr) \
599 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
604 static enum line_type
605 get_line_type(char *line
)
607 int linelen
= strlen(line
);
610 for (type
= 0; type
< ARRAY_SIZE(line_info
); type
++)
611 /* Case insensitive search matches Signed-off-by lines better. */
612 if (linelen
>= line_info
[type
].linelen
&&
613 !strncasecmp(line_info
[type
].line
, line
, line_info
[type
].linelen
))
620 get_line_attr(enum line_type type
)
622 assert(type
< ARRAY_SIZE(line_info
));
623 return COLOR_PAIR(type
) | line_info
[type
].attr
;
626 static struct line_info
*
627 get_line_info(char *name
, int namelen
)
631 for (type
= 0; type
< ARRAY_SIZE(line_info
); type
++)
632 if (namelen
== line_info
[type
].namelen
&&
633 !string_enum_compare(line_info
[type
].name
, name
, namelen
))
634 return &line_info
[type
];
642 int default_bg
= COLOR_BLACK
;
643 int default_fg
= COLOR_WHITE
;
648 if (use_default_colors() != ERR
) {
653 for (type
= 0; type
< ARRAY_SIZE(line_info
); type
++) {
654 struct line_info
*info
= &line_info
[type
];
655 int bg
= info
->bg
== COLOR_DEFAULT ? default_bg
: info
->bg
;
656 int fg
= info
->fg
== COLOR_DEFAULT ? default_fg
: info
->fg
;
658 init_pair(type
, fg
, bg
);
666 unsigned int selected
:1;
668 void *data
; /* User data */
678 enum request request
;
679 struct keybinding
*next
;
682 static struct keybinding default_keybindings
[] = {
684 { 'm', REQ_VIEW_MAIN
},
685 { 'd', REQ_VIEW_DIFF
},
686 { 'l', REQ_VIEW_LOG
},
687 { 't', REQ_VIEW_TREE
},
688 { 'f', REQ_VIEW_BLOB
},
689 { 'p', REQ_VIEW_PAGER
},
690 { 'h', REQ_VIEW_HELP
},
692 /* View manipulation */
693 { 'q', REQ_VIEW_CLOSE
},
694 { KEY_TAB
, REQ_VIEW_NEXT
},
695 { KEY_RETURN
, REQ_ENTER
},
696 { KEY_UP
, REQ_PREVIOUS
},
697 { KEY_DOWN
, REQ_NEXT
},
699 /* Cursor navigation */
700 { 'k', REQ_MOVE_UP
},
701 { 'j', REQ_MOVE_DOWN
},
702 { KEY_HOME
, REQ_MOVE_FIRST_LINE
},
703 { KEY_END
, REQ_MOVE_LAST_LINE
},
704 { KEY_NPAGE
, REQ_MOVE_PAGE_DOWN
},
705 { ' ', REQ_MOVE_PAGE_DOWN
},
706 { KEY_PPAGE
, REQ_MOVE_PAGE_UP
},
707 { 'b', REQ_MOVE_PAGE_UP
},
708 { '-', REQ_MOVE_PAGE_UP
},
711 { KEY_IC
, REQ_SCROLL_LINE_UP
},
712 { KEY_DC
, REQ_SCROLL_LINE_DOWN
},
713 { 'w', REQ_SCROLL_PAGE_UP
},
714 { 's', REQ_SCROLL_PAGE_DOWN
},
718 { '?', REQ_SEARCH_BACK
},
719 { 'n', REQ_FIND_NEXT
},
720 { 'N', REQ_FIND_PREV
},
724 { 'z', REQ_STOP_LOADING
},
725 { 'v', REQ_SHOW_VERSION
},
726 { 'r', REQ_SCREEN_REDRAW
},
727 { '.', REQ_TOGGLE_LINENO
},
728 { 'g', REQ_TOGGLE_REV_GRAPH
},
731 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
734 /* Using the ncurses SIGWINCH handler. */
735 { KEY_RESIZE
, REQ_SCREEN_RESIZE
},
738 #define KEYMAP_INFO \
749 #define KEYMAP_(name) KEYMAP_##name
754 static struct int_map keymap_table
[] = {
755 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
760 #define set_keymap(map, name) \
761 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
763 static struct keybinding
*keybindings
[ARRAY_SIZE(keymap_table
)];
766 add_keybinding(enum keymap keymap
, enum request request
, int key
)
768 struct keybinding
*keybinding
;
770 keybinding
= calloc(1, sizeof(*keybinding
));
772 die("Failed to allocate keybinding");
774 keybinding
->alias
= key
;
775 keybinding
->request
= request
;
776 keybinding
->next
= keybindings
[keymap
];
777 keybindings
[keymap
] = keybinding
;
780 /* Looks for a key binding first in the given map, then in the generic map, and
781 * lastly in the default keybindings. */
783 get_keybinding(enum keymap keymap
, int key
)
785 struct keybinding
*kbd
;
788 for (kbd
= keybindings
[keymap
]; kbd
; kbd
= kbd
->next
)
789 if (kbd
->alias
== key
)
792 for (kbd
= keybindings
[KEYMAP_GENERIC
]; kbd
; kbd
= kbd
->next
)
793 if (kbd
->alias
== key
)
796 for (i
= 0; i
< ARRAY_SIZE(default_keybindings
); i
++)
797 if (default_keybindings
[i
].alias
== key
)
798 return default_keybindings
[i
].request
;
800 return (enum request
) key
;
809 static struct key key_table
[] = {
810 { "Enter", KEY_RETURN
},
812 { "Backspace", KEY_BACKSPACE
},
814 { "Escape", KEY_ESC
},
815 { "Left", KEY_LEFT
},
816 { "Right", KEY_RIGHT
},
818 { "Down", KEY_DOWN
},
819 { "Insert", KEY_IC
},
820 { "Delete", KEY_DC
},
822 { "Home", KEY_HOME
},
824 { "PageUp", KEY_PPAGE
},
825 { "PageDown", KEY_NPAGE
},
835 { "F10", KEY_F(10) },
836 { "F11", KEY_F(11) },
837 { "F12", KEY_F(12) },
841 get_key_value(const char *name
)
845 for (i
= 0; i
< ARRAY_SIZE(key_table
); i
++)
846 if (!strcasecmp(key_table
[i
].name
, name
))
847 return key_table
[i
].value
;
849 if (strlen(name
) == 1 && isprint(*name
))
856 get_key(enum request request
)
858 static char buf
[BUFSIZ
];
859 static char key_char
[] = "'X'";
866 for (i
= 0; i
< ARRAY_SIZE(default_keybindings
); i
++) {
867 struct keybinding
*keybinding
= &default_keybindings
[i
];
871 if (keybinding
->request
!= request
)
874 for (key
= 0; key
< ARRAY_SIZE(key_table
); key
++)
875 if (key_table
[key
].value
== keybinding
->alias
)
876 seq
= key_table
[key
].name
;
879 keybinding
->alias
< 127 &&
880 isprint(keybinding
->alias
)) {
881 key_char
[1] = (char) keybinding
->alias
;
888 if (!string_format_from(buf
, &pos
, "%s%s", sep
, seq
))
889 return "Too many keybindings!";
898 * User config file handling.
901 static struct int_map color_map
[] = {
902 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
914 #define set_color(color, name) \
915 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
917 static struct int_map attr_map
[] = {
918 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
928 #define set_attribute(attr, name) \
929 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
931 static int config_lineno
;
932 static bool config_errors
;
933 static char *config_msg
;
935 /* Wants: object fgcolor bgcolor [attr] */
937 option_color_command(int argc
, char *argv
[])
939 struct line_info
*info
;
941 if (argc
!= 3 && argc
!= 4) {
942 config_msg
= "Wrong number of arguments given to color command";
946 info
= get_line_info(argv
[0], strlen(argv
[0]));
948 config_msg
= "Unknown color name";
952 if (set_color(&info
->fg
, argv
[1]) == ERR
||
953 set_color(&info
->bg
, argv
[2]) == ERR
) {
954 config_msg
= "Unknown color";
958 if (argc
== 4 && set_attribute(&info
->attr
, argv
[3]) == ERR
) {
959 config_msg
= "Unknown attribute";
966 /* Wants: name = value */
968 option_set_command(int argc
, char *argv
[])
971 config_msg
= "Wrong number of arguments given to set command";
975 if (strcmp(argv
[1], "=")) {
976 config_msg
= "No value assigned";
980 if (!strcmp(argv
[0], "show-rev-graph")) {
981 opt_rev_graph
= (!strcmp(argv
[2], "1") ||
982 !strcmp(argv
[2], "true") ||
983 !strcmp(argv
[2], "yes"));
987 if (!strcmp(argv
[0], "line-number-interval")) {
988 opt_num_interval
= atoi(argv
[2]);
992 if (!strcmp(argv
[0], "tab-size")) {
993 opt_tab_size
= atoi(argv
[2]);
997 if (!strcmp(argv
[0], "commit-encoding")) {
999 int delimiter
= *arg
;
1002 switch (delimiter
) {
1005 for (arg
++, i
= 0; arg
[i
]; i
++)
1006 if (arg
[i
] == delimiter
) {
1011 string_copy(opt_encoding
, arg
);
1016 config_msg
= "Unknown variable name";
1020 /* Wants: mode request key */
1022 option_bind_command(int argc
, char *argv
[])
1024 enum request request
;
1029 config_msg
= "Wrong number of arguments given to bind command";
1033 if (set_keymap(&keymap
, argv
[0]) == ERR
) {
1034 config_msg
= "Unknown key map";
1038 key
= get_key_value(argv
[1]);
1040 config_msg
= "Unknown key";
1044 request
= get_request(argv
[2]);
1045 if (request
== REQ_UNKNOWN
) {
1046 config_msg
= "Unknown request name";
1050 add_keybinding(keymap
, request
, key
);
1056 set_option(char *opt
, char *value
)
1063 while (argc
< ARRAY_SIZE(argv
) && (valuelen
= strcspn(value
, " \t"))) {
1064 argv
[argc
++] = value
;
1071 while (isspace(*value
))
1075 if (!strcmp(opt
, "color"))
1076 return option_color_command(argc
, argv
);
1078 if (!strcmp(opt
, "set"))
1079 return option_set_command(argc
, argv
);
1081 if (!strcmp(opt
, "bind"))
1082 return option_bind_command(argc
, argv
);
1084 config_msg
= "Unknown option command";
1089 read_option(char *opt
, int optlen
, char *value
, int valuelen
)
1094 config_msg
= "Internal error";
1096 /* Check for comment markers, since read_properties() will
1097 * only ensure opt and value are split at first " \t". */
1098 optlen
= strcspn(opt
, "#");
1102 if (opt
[optlen
] != 0) {
1103 config_msg
= "No option value";
1107 /* Look for comment endings in the value. */
1108 int len
= strcspn(value
, "#");
1110 if (len
< valuelen
) {
1112 value
[valuelen
] = 0;
1115 status
= set_option(opt
, value
);
1118 if (status
== ERR
) {
1119 fprintf(stderr
, "Error on line %d, near '%.*s': %s\n",
1120 config_lineno
, optlen
, opt
, config_msg
);
1121 config_errors
= TRUE
;
1124 /* Always keep going if errors are encountered. */
1131 char *home
= getenv("HOME");
1132 char buf
[SIZEOF_STR
];
1136 config_errors
= FALSE
;
1138 if (!home
|| !string_format(buf
, "%s/.tigrc", home
))
1141 /* It's ok that the file doesn't exist. */
1142 file
= fopen(buf
, "r");
1146 if (read_properties(file
, " \t", read_option
) == ERR
||
1147 config_errors
== TRUE
)
1148 fprintf(stderr
, "Errors while loading %s.\n", buf
);
1161 /* The display array of active views and the index of the current view. */
1162 static struct view
*display
[2];
1163 static unsigned int current_view
;
1165 #define foreach_displayed_view(view, i) \
1166 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1168 #define displayed_views() (display[1] != NULL ? 2 : 1)
1170 /* Current head and commit ID */
1171 static char ref_blob
[SIZEOF_REF
] = "";
1172 static char ref_commit
[SIZEOF_REF
] = "HEAD";
1173 static char ref_head
[SIZEOF_REF
] = "HEAD";
1176 const char *name
; /* View name */
1177 const char *cmd_fmt
; /* Default command line format */
1178 const char *cmd_env
; /* Command line set via environment */
1179 const char *id
; /* Points to either of ref_{head,commit,blob} */
1181 struct view_ops
*ops
; /* View operations */
1183 enum keymap keymap
; /* What keymap does this view have */
1185 char cmd
[SIZEOF_STR
]; /* Command buffer */
1186 char ref
[SIZEOF_REF
]; /* Hovered commit reference */
1187 char vid
[SIZEOF_REF
]; /* View ID. Set to id member when updating. */
1189 int height
, width
; /* The width and height of the main window */
1190 WINDOW
*win
; /* The main window */
1191 WINDOW
*title
; /* The title window living below the main window */
1194 unsigned long offset
; /* Offset of the window top */
1195 unsigned long lineno
; /* Current line number */
1198 char grep
[SIZEOF_STR
]; /* Search string */
1199 regex_t
*regex
; /* Pre-compiled regex */
1201 /* If non-NULL, points to the view that opened this view. If this view
1202 * is closed tig will switch back to the parent view. */
1203 struct view
*parent
;
1206 unsigned long lines
; /* Total number of lines */
1207 struct line
*line
; /* Line index */
1208 unsigned long line_size
;/* Total number of allocated lines */
1209 unsigned int digits
; /* Number of digits in the lines member. */
1217 /* What type of content being displayed. Used in the title bar. */
1219 /* Draw one line; @lineno must be < view->height. */
1220 bool (*draw
)(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
);
1221 /* Read one line; updates view->line. */
1222 bool (*read
)(struct view
*view
, char *data
);
1223 /* Depending on view, change display based on current line. */
1224 bool (*enter
)(struct view
*view
, struct line
*line
);
1225 /* Search for regex in a line. */
1226 bool (*grep
)(struct view
*view
, struct line
*line
);
1228 void (*select
)(struct view
*view
, struct line
*line
);
1231 static struct view_ops pager_ops
;
1232 static struct view_ops main_ops
;
1233 static struct view_ops tree_ops
;
1234 static struct view_ops blob_ops
;
1236 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1237 { name, cmd, #env, ref, ops, map}
1239 #define VIEW_(id, name, ops, ref) \
1240 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1243 static struct view views
[] = {
1244 VIEW_(MAIN
, "main", &main_ops
, ref_head
),
1245 VIEW_(DIFF
, "diff", &pager_ops
, ref_commit
),
1246 VIEW_(LOG
, "log", &pager_ops
, ref_head
),
1247 VIEW_(TREE
, "tree", &tree_ops
, ref_commit
),
1248 VIEW_(BLOB
, "blob", &blob_ops
, ref_blob
),
1249 VIEW_(HELP
, "help", &pager_ops
, "static"),
1250 VIEW_(PAGER
, "pager", &pager_ops
, "static"),
1253 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1255 #define foreach_view(view, i) \
1256 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1258 #define view_is_displayed(view) \
1259 (view == display[0] || view == display[1])
1262 draw_view_line(struct view
*view
, unsigned int lineno
)
1265 bool selected
= (view
->offset
+ lineno
== view
->lineno
);
1267 assert(view_is_displayed(view
));
1269 if (view
->offset
+ lineno
>= view
->lines
)
1272 line
= &view
->line
[view
->offset
+ lineno
];
1275 line
->selected
= TRUE
;
1276 view
->ops
->select(view
, line
);
1277 } else if (line
->selected
) {
1278 line
->selected
= FALSE
;
1279 wmove(view
->win
, lineno
, 0);
1280 wclrtoeol(view
->win
);
1283 return view
->ops
->draw(view
, line
, lineno
, selected
);
1287 redraw_view_from(struct view
*view
, int lineno
)
1289 assert(0 <= lineno
&& lineno
< view
->height
);
1291 for (; lineno
< view
->height
; lineno
++) {
1292 if (!draw_view_line(view
, lineno
))
1296 redrawwin(view
->win
);
1297 wrefresh(view
->win
);
1301 redraw_view(struct view
*view
)
1304 redraw_view_from(view
, 0);
1309 update_view_title(struct view
*view
)
1311 assert(view_is_displayed(view
));
1313 if (view
== display
[current_view
])
1314 wbkgdset(view
->title
, get_line_attr(LINE_TITLE_FOCUS
));
1316 wbkgdset(view
->title
, get_line_attr(LINE_TITLE_BLUR
));
1318 werase(view
->title
);
1319 wmove(view
->title
, 0, 0);
1322 wprintw(view
->title
, "[%s] %s", view
->name
, view
->ref
);
1324 wprintw(view
->title
, "[%s]", view
->name
);
1326 if (view
->lines
|| view
->pipe
) {
1327 unsigned int view_lines
= view
->offset
+ view
->height
;
1328 unsigned int lines
= view
->lines
1329 ?
MIN(view_lines
, view
->lines
) * 100 / view
->lines
1332 wprintw(view
->title
, " - %s %d of %d (%d%%)",
1340 time_t secs
= time(NULL
) - view
->start_time
;
1342 /* Three git seconds are a long time ... */
1344 wprintw(view
->title
, " %lds", secs
);
1347 wmove(view
->title
, 0, view
->width
- 1);
1348 wrefresh(view
->title
);
1352 resize_display(void)
1355 struct view
*base
= display
[0];
1356 struct view
*view
= display
[1] ? display
[1] : display
[0];
1358 /* Setup window dimensions */
1360 getmaxyx(stdscr
, base
->height
, base
->width
);
1362 /* Make room for the status window. */
1366 /* Horizontal split. */
1367 view
->width
= base
->width
;
1368 view
->height
= SCALE_SPLIT_VIEW(base
->height
);
1369 base
->height
-= view
->height
;
1371 /* Make room for the title bar. */
1375 /* Make room for the title bar. */
1380 foreach_displayed_view (view
, i
) {
1382 view
->win
= newwin(view
->height
, 0, offset
, 0);
1384 die("Failed to create %s view", view
->name
);
1386 scrollok(view
->win
, TRUE
);
1388 view
->title
= newwin(1, 0, offset
+ view
->height
, 0);
1390 die("Failed to create title window");
1393 wresize(view
->win
, view
->height
, view
->width
);
1394 mvwin(view
->win
, offset
, 0);
1395 mvwin(view
->title
, offset
+ view
->height
, 0);
1398 offset
+= view
->height
+ 1;
1403 redraw_display(void)
1408 foreach_displayed_view (view
, i
) {
1410 update_view_title(view
);
1415 update_display_cursor(void)
1417 struct view
*view
= display
[current_view
];
1419 /* Move the cursor to the right-most column of the cursor line.
1421 * XXX: This could turn out to be a bit expensive, but it ensures that
1422 * the cursor does not jump around. */
1424 wmove(view
->win
, view
->lineno
- view
->offset
, view
->width
- 1);
1425 wrefresh(view
->win
);
1433 /* Scrolling backend */
1435 do_scroll_view(struct view
*view
, int lines
)
1437 bool redraw_current_line
= FALSE
;
1439 /* The rendering expects the new offset. */
1440 view
->offset
+= lines
;
1442 assert(0 <= view
->offset
&& view
->offset
< view
->lines
);
1445 /* Move current line into the view. */
1446 if (view
->lineno
< view
->offset
) {
1447 view
->lineno
= view
->offset
;
1448 redraw_current_line
= TRUE
;
1449 } else if (view
->lineno
>= view
->offset
+ view
->height
) {
1450 view
->lineno
= view
->offset
+ view
->height
- 1;
1451 redraw_current_line
= TRUE
;
1454 assert(view
->offset
<= view
->lineno
&& view
->lineno
< view
->lines
);
1456 /* Redraw the whole screen if scrolling is pointless. */
1457 if (view
->height
< ABS(lines
)) {
1461 int line
= lines
> 0 ? view
->height
- lines
: 0;
1462 int end
= line
+ ABS(lines
);
1464 wscrl(view
->win
, lines
);
1466 for (; line
< end
; line
++) {
1467 if (!draw_view_line(view
, line
))
1471 if (redraw_current_line
)
1472 draw_view_line(view
, view
->lineno
- view
->offset
);
1475 redrawwin(view
->win
);
1476 wrefresh(view
->win
);
1480 /* Scroll frontend */
1482 scroll_view(struct view
*view
, enum request request
)
1486 assert(view_is_displayed(view
));
1489 case REQ_SCROLL_PAGE_DOWN
:
1490 lines
= view
->height
;
1491 case REQ_SCROLL_LINE_DOWN
:
1492 if (view
->offset
+ lines
> view
->lines
)
1493 lines
= view
->lines
- view
->offset
;
1495 if (lines
== 0 || view
->offset
+ view
->height
>= view
->lines
) {
1496 report("Cannot scroll beyond the last line");
1501 case REQ_SCROLL_PAGE_UP
:
1502 lines
= view
->height
;
1503 case REQ_SCROLL_LINE_UP
:
1504 if (lines
> view
->offset
)
1505 lines
= view
->offset
;
1508 report("Cannot scroll beyond the first line");
1516 die("request %d not handled in switch", request
);
1519 do_scroll_view(view
, lines
);
1524 move_view(struct view
*view
, enum request request
)
1526 bool scroll
= FALSE
;
1530 case REQ_MOVE_FIRST_LINE
:
1531 steps
= -view
->lineno
;
1534 case REQ_MOVE_LAST_LINE
:
1535 steps
= view
->lines
- view
->lineno
- 1;
1538 case REQ_MOVE_PAGE_UP
:
1539 steps
= view
->height
> view
->lineno
1540 ?
-view
->lineno
: -view
->height
;
1543 case REQ_MOVE_PAGE_DOWN
:
1544 steps
= view
->lineno
+ view
->height
>= view
->lines
1545 ? view
->lines
- view
->lineno
- 1 : view
->height
;
1557 die("request %d not handled in switch", request
);
1560 if (steps
<= 0 && view
->lineno
== 0) {
1561 report("Cannot move beyond the first line");
1564 } else if (steps
>= 0 && view
->lineno
+ 1 >= view
->lines
) {
1565 report("Cannot move beyond the last line");
1569 /* Move the current line */
1570 view
->lineno
+= steps
;
1571 assert(0 <= view
->lineno
&& view
->lineno
< view
->lines
);
1573 /* Check whether the view needs to be scrolled */
1574 if (view
->lineno
< view
->offset
||
1575 view
->lineno
>= view
->offset
+ view
->height
) {
1576 if (steps
< 0 && -steps
> view
->offset
) {
1577 steps
= -view
->offset
;
1579 } else if (steps
> 0) {
1580 if (view
->lineno
== view
->lines
- 1 &&
1581 view
->lines
> view
->height
) {
1582 steps
= view
->lines
- view
->offset
- 1;
1583 if (steps
>= view
->height
)
1584 steps
-= view
->height
- 1;
1591 if (!view_is_displayed(view
)) {
1592 view
->offset
+= steps
;
1593 view
->ops
->select(view
, &view
->line
[view
->lineno
]);
1597 /* Repaint the old "current" line if we be scrolling */
1598 if (ABS(steps
) < view
->height
)
1599 draw_view_line(view
, view
->lineno
- steps
- view
->offset
);
1602 do_scroll_view(view
, steps
);
1606 /* Draw the current line */
1607 draw_view_line(view
, view
->lineno
- view
->offset
);
1609 redrawwin(view
->win
);
1610 wrefresh(view
->win
);
1619 static void search_view(struct view
*view
, enum request request
);
1622 find_next_line(struct view
*view
, unsigned long lineno
, struct line
*line
)
1624 assert(view_is_displayed(view
));
1626 if (!view
->ops
->grep(view
, line
))
1629 if (lineno
- view
->offset
>= view
->height
) {
1630 view
->offset
= lineno
;
1631 view
->lineno
= lineno
;
1635 unsigned long old_lineno
= view
->lineno
- view
->offset
;
1637 view
->lineno
= lineno
;
1638 draw_view_line(view
, old_lineno
);
1640 draw_view_line(view
, view
->lineno
- view
->offset
);
1641 redrawwin(view
->win
);
1642 wrefresh(view
->win
);
1645 report("Line %ld matches '%s'", lineno
+ 1, view
->grep
);
1650 find_next(struct view
*view
, enum request request
)
1652 unsigned long lineno
= view
->lineno
;
1657 report("No previous search");
1659 search_view(view
, request
);
1669 case REQ_SEARCH_BACK
:
1678 if (request
== REQ_FIND_NEXT
|| request
== REQ_FIND_PREV
)
1679 lineno
+= direction
;
1681 /* Note, lineno is unsigned long so will wrap around in which case it
1682 * will become bigger than view->lines. */
1683 for (; lineno
< view
->lines
; lineno
+= direction
) {
1684 struct line
*line
= &view
->line
[lineno
];
1686 if (find_next_line(view
, lineno
, line
))
1690 report("No match found for '%s'", view
->grep
);
1694 search_view(struct view
*view
, enum request request
)
1699 regfree(view
->regex
);
1702 view
->regex
= calloc(1, sizeof(*view
->regex
));
1707 regex_err
= regcomp(view
->regex
, opt_search
, REG_EXTENDED
);
1708 if (regex_err
!= 0) {
1709 char buf
[SIZEOF_STR
] = "unknown error";
1711 regerror(regex_err
, view
->regex
, buf
, sizeof(buf
));
1712 report("Search failed: %s", buf
);
1716 string_copy(view
->grep
, opt_search
);
1718 find_next(view
, request
);
1722 * Incremental updating
1726 end_update(struct view
*view
)
1730 set_nonblocking_input(FALSE
);
1731 if (view
->pipe
== stdin
)
1739 begin_update(struct view
*view
)
1741 const char *id
= view
->id
;
1747 string_copy(view
->cmd
, opt_cmd
);
1749 /* When running random commands, the view ref could have become
1750 * invalid so clear it. */
1753 } else if (view
== VIEW(REQ_VIEW_TREE
)) {
1754 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1756 if (strcmp(view
->vid
, view
->id
))
1759 if (!string_format(view
->cmd
, format
, id
, opt_path
))
1763 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1765 if (!string_format(view
->cmd
, format
, id
, id
, id
, id
, id
))
1769 /* Special case for the pager view. */
1771 view
->pipe
= opt_pipe
;
1774 view
->pipe
= popen(view
->cmd
, "r");
1780 set_nonblocking_input(TRUE
);
1785 string_copy(view
->vid
, id
);
1790 for (i
= 0; i
< view
->lines
; i
++)
1791 if (view
->line
[i
].data
)
1792 free(view
->line
[i
].data
);
1798 view
->start_time
= time(NULL
);
1803 static struct line
*
1804 realloc_lines(struct view
*view
, size_t line_size
)
1806 struct line
*tmp
= realloc(view
->line
, sizeof(*view
->line
) * line_size
);
1812 view
->line_size
= line_size
;
1817 update_view(struct view
*view
)
1819 char in_buffer
[BUFSIZ
];
1820 char out_buffer
[BUFSIZ
* 2];
1822 /* The number of lines to read. If too low it will cause too much
1823 * redrawing (and possible flickering), if too high responsiveness
1825 unsigned long lines
= view
->height
;
1826 int redraw_from
= -1;
1831 /* Only redraw if lines are visible. */
1832 if (view
->offset
+ view
->height
>= view
->lines
)
1833 redraw_from
= view
->lines
- view
->offset
;
1835 /* FIXME: This is probably not perfect for backgrounded views. */
1836 if (!realloc_lines(view
, view
->lines
+ lines
))
1839 while ((line
= fgets(in_buffer
, sizeof(in_buffer
), view
->pipe
))) {
1840 size_t linelen
= strlen(line
);
1843 line
[linelen
- 1] = 0;
1845 if (opt_iconv
!= ICONV_NONE
) {
1847 size_t inlen
= linelen
;
1849 char *outbuf
= out_buffer
;
1850 size_t outlen
= sizeof(out_buffer
);
1854 ret
= iconv(opt_iconv
, &inbuf
, &inlen
, &outbuf
, &outlen
);
1855 if (ret
!= (size_t) -1) {
1857 linelen
= strlen(out_buffer
);
1861 if (!view
->ops
->read(view
, line
))
1871 lines
= view
->lines
;
1872 for (digits
= 0; lines
; digits
++)
1875 /* Keep the displayed view in sync with line number scaling. */
1876 if (digits
!= view
->digits
) {
1877 view
->digits
= digits
;
1882 if (!view_is_displayed(view
))
1885 if (view
== VIEW(REQ_VIEW_TREE
)) {
1886 /* Clear the view and redraw everything since the tree sorting
1887 * might have rearranged things. */
1890 } else if (redraw_from
>= 0) {
1891 /* If this is an incremental update, redraw the previous line
1892 * since for commits some members could have changed when
1893 * loading the main view. */
1894 if (redraw_from
> 0)
1897 /* Incrementally draw avoids flickering. */
1898 redraw_view_from(view
, redraw_from
);
1901 /* Update the title _after_ the redraw so that if the redraw picks up a
1902 * commit reference in view->ref it'll be available here. */
1903 update_view_title(view
);
1906 if (ferror(view
->pipe
)) {
1907 report("Failed to read: %s", strerror(errno
));
1910 } else if (feof(view
->pipe
)) {
1918 report("Allocation failure");
1930 static void open_help_view(struct view
*view
)
1933 int lines
= ARRAY_SIZE(req_info
) + 2;
1936 if (view
->lines
> 0)
1939 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++)
1940 if (!req_info
[i
].request
)
1943 view
->line
= calloc(lines
, sizeof(*view
->line
));
1945 report("Allocation failure");
1949 view
->ops
->read(view
, "Quick reference for tig keybindings:");
1951 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++) {
1954 if (!req_info
[i
].request
) {
1955 view
->ops
->read(view
, "");
1956 view
->ops
->read(view
, req_info
[i
].help
);
1960 key
= get_key(req_info
[i
].request
);
1961 if (!string_format(buf
, "%-25s %s", key
, req_info
[i
].help
))
1964 view
->ops
->read(view
, buf
);
1969 OPEN_DEFAULT
= 0, /* Use default view switching. */
1970 OPEN_SPLIT
= 1, /* Split current view. */
1971 OPEN_BACKGROUNDED
= 2, /* Backgrounded. */
1972 OPEN_RELOAD
= 4, /* Reload view even if it is the current. */
1976 open_view(struct view
*prev
, enum request request
, enum open_flags flags
)
1978 bool backgrounded
= !!(flags
& OPEN_BACKGROUNDED
);
1979 bool split
= !!(flags
& OPEN_SPLIT
);
1980 bool reload
= !!(flags
& OPEN_RELOAD
);
1981 struct view
*view
= VIEW(request
);
1982 int nviews
= displayed_views();
1983 struct view
*base_view
= display
[0];
1985 if (view
== prev
&& nviews
== 1 && !reload
) {
1986 report("Already in %s view", view
->name
);
1990 if (view
== VIEW(REQ_VIEW_HELP
)) {
1991 open_help_view(view
);
1993 } else if ((reload
|| strcmp(view
->vid
, view
->id
)) &&
1994 !begin_update(view
)) {
1995 report("Failed to load %s view", view
->name
);
2004 /* Maximize the current view. */
2005 memset(display
, 0, sizeof(display
));
2007 display
[current_view
] = view
;
2010 /* Resize the view when switching between split- and full-screen,
2011 * or when switching between two different full-screen views. */
2012 if (nviews
!= displayed_views() ||
2013 (nviews
== 1 && base_view
!= display
[0]))
2016 if (split
&& prev
->lineno
- prev
->offset
>= prev
->height
) {
2017 /* Take the title line into account. */
2018 int lines
= prev
->lineno
- prev
->offset
- prev
->height
+ 1;
2020 /* Scroll the view that was split if the current line is
2021 * outside the new limited view. */
2022 do_scroll_view(prev
, lines
);
2025 if (prev
&& view
!= prev
) {
2026 if (split
&& !backgrounded
) {
2027 /* "Blur" the previous view. */
2028 update_view_title(prev
);
2031 view
->parent
= prev
;
2034 if (view
->pipe
&& view
->lines
== 0) {
2035 /* Clear the old view and let the incremental updating refill
2044 /* If the view is backgrounded the above calls to report()
2045 * won't redraw the view title. */
2047 update_view_title(view
);
2052 * User request switch noodle
2056 view_driver(struct view
*view
, enum request request
)
2063 case REQ_MOVE_PAGE_UP
:
2064 case REQ_MOVE_PAGE_DOWN
:
2065 case REQ_MOVE_FIRST_LINE
:
2066 case REQ_MOVE_LAST_LINE
:
2067 move_view(view
, request
);
2070 case REQ_SCROLL_LINE_DOWN
:
2071 case REQ_SCROLL_LINE_UP
:
2072 case REQ_SCROLL_PAGE_DOWN
:
2073 case REQ_SCROLL_PAGE_UP
:
2074 scroll_view(view
, request
);
2079 report("No file chosen, press 't' to open tree view");
2088 case REQ_VIEW_PAGER
:
2089 open_view(view
, request
, OPEN_DEFAULT
);
2094 request
= request
== REQ_NEXT ? REQ_MOVE_DOWN
: REQ_MOVE_UP
;
2096 if ((view
== VIEW(REQ_VIEW_DIFF
) &&
2097 view
->parent
== VIEW(REQ_VIEW_MAIN
)) ||
2098 (view
== VIEW(REQ_VIEW_BLOB
) &&
2099 view
->parent
== VIEW(REQ_VIEW_TREE
))) {
2100 view
= view
->parent
;
2101 move_view(view
, request
);
2102 if (view_is_displayed(view
))
2103 update_view_title(view
);
2105 move_view(view
, request
);
2112 report("Nothing to enter");
2115 return view
->ops
->enter(view
, &view
->line
[view
->lineno
]);
2119 int nviews
= displayed_views();
2120 int next_view
= (current_view
+ 1) % nviews
;
2122 if (next_view
== current_view
) {
2123 report("Only one view is displayed");
2127 current_view
= next_view
;
2128 /* Blur out the title of the previous view. */
2129 update_view_title(view
);
2133 case REQ_TOGGLE_LINENO
:
2134 opt_line_number
= !opt_line_number
;
2138 case REQ_TOGGLE_REV_GRAPH
:
2139 opt_rev_graph
= !opt_rev_graph
;
2144 /* Always reload^Wrerun commands from the prompt. */
2145 open_view(view
, opt_request
, OPEN_RELOAD
);
2149 case REQ_SEARCH_BACK
:
2150 search_view(view
, request
);
2155 find_next(view
, request
);
2158 case REQ_STOP_LOADING
:
2159 for (i
= 0; i
< ARRAY_SIZE(views
); i
++) {
2162 report("Stopped loading the %s view", view
->name
),
2167 case REQ_SHOW_VERSION
:
2168 report("%s (built %s)", VERSION
, __DATE__
);
2171 case REQ_SCREEN_RESIZE
:
2174 case REQ_SCREEN_REDRAW
:
2182 case REQ_VIEW_CLOSE
:
2183 /* XXX: Mark closed views by letting view->parent point to the
2184 * view itself. Parents to closed view should never be
2187 view
->parent
->parent
!= view
->parent
) {
2188 memset(display
, 0, sizeof(display
));
2190 display
[current_view
] = view
->parent
;
2191 view
->parent
= view
;
2201 /* An unknown key will show most commonly used commands. */
2202 report("Unknown key, press 'h' for help");
2215 pager_draw(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
)
2217 char *text
= line
->data
;
2218 enum line_type type
= line
->type
;
2219 int textlen
= strlen(text
);
2222 wmove(view
->win
, lineno
, 0);
2226 wchgat(view
->win
, -1, 0, type
, NULL
);
2229 attr
= get_line_attr(type
);
2230 wattrset(view
->win
, attr
);
2232 if (opt_line_number
|| opt_tab_size
< TABSIZE
) {
2233 static char spaces
[] = " ";
2234 int col_offset
= 0, col
= 0;
2236 if (opt_line_number
) {
2237 unsigned long real_lineno
= view
->offset
+ lineno
+ 1;
2239 if (real_lineno
== 1 ||
2240 (real_lineno
% opt_num_interval
) == 0) {
2241 wprintw(view
->win
, "%.*d", view
->digits
, real_lineno
);
2244 waddnstr(view
->win
, spaces
,
2245 MIN(view
->digits
, STRING_SIZE(spaces
)));
2247 waddstr(view
->win
, ": ");
2248 col_offset
= view
->digits
+ 2;
2251 while (text
&& col_offset
+ col
< view
->width
) {
2252 int cols_max
= view
->width
- col_offset
- col
;
2256 if (*text
== '\t') {
2258 assert(sizeof(spaces
) > TABSIZE
);
2260 cols
= opt_tab_size
- (col
% opt_tab_size
);
2263 text
= strchr(text
, '\t');
2264 cols
= line ? text
- pos
: strlen(pos
);
2267 waddnstr(view
->win
, pos
, MIN(cols
, cols_max
));
2272 int col
= 0, pos
= 0;
2274 for (; pos
< textlen
&& col
< view
->width
; pos
++, col
++)
2275 if (text
[pos
] == '\t')
2276 col
+= TABSIZE
- (col
% TABSIZE
) - 1;
2278 waddnstr(view
->win
, text
, pos
);
2285 add_describe_ref(char *buf
, size_t *bufpos
, char *commit_id
, const char *sep
)
2287 char refbuf
[SIZEOF_STR
];
2291 if (!string_format(refbuf
, "git describe %s", commit_id
))
2294 pipe
= popen(refbuf
, "r");
2298 if ((ref
= fgets(refbuf
, sizeof(refbuf
), pipe
)))
2299 ref
= chomp_string(ref
);
2305 /* This is the only fatal call, since it can "corrupt" the buffer. */
2306 if (!string_nformat(buf
, SIZEOF_STR
, bufpos
, "%s%s", sep
, ref
))
2313 add_pager_refs(struct view
*view
, struct line
*line
)
2315 char buf
[SIZEOF_STR
];
2316 char *commit_id
= line
->data
+ STRING_SIZE("commit ");
2318 size_t bufpos
= 0, refpos
= 0;
2319 const char *sep
= "Refs: ";
2320 bool is_tag
= FALSE
;
2322 assert(line
->type
== LINE_COMMIT
);
2324 refs
= get_refs(commit_id
);
2326 if (view
== VIEW(REQ_VIEW_DIFF
))
2327 goto try_add_describe_ref
;
2332 struct ref
*ref
= refs
[refpos
];
2333 char *fmt
= ref
->tag ?
"%s[%s]" : "%s%s";
2335 if (!string_format_from(buf
, &bufpos
, fmt
, sep
, ref
->name
))
2340 } while (refs
[refpos
++]->next
);
2342 if (!is_tag
&& view
== VIEW(REQ_VIEW_DIFF
)) {
2343 try_add_describe_ref
:
2344 /* Add <tag>-g<commit_id> "fake" reference. */
2345 if (!add_describe_ref(buf
, &bufpos
, commit_id
, sep
))
2352 if (!realloc_lines(view
, view
->line_size
+ 1))
2355 line
= &view
->line
[view
->lines
];
2356 line
->data
= strdup(buf
);
2360 line
->type
= LINE_PP_REFS
;
2365 pager_read(struct view
*view
, char *data
)
2367 struct line
*line
= &view
->line
[view
->lines
];
2369 line
->data
= strdup(data
);
2373 line
->type
= get_line_type(line
->data
);
2376 if (line
->type
== LINE_COMMIT
&&
2377 (view
== VIEW(REQ_VIEW_DIFF
) ||
2378 view
== VIEW(REQ_VIEW_LOG
)))
2379 add_pager_refs(view
, line
);
2385 pager_enter(struct view
*view
, struct line
*line
)
2389 if (line
->type
== LINE_COMMIT
&&
2390 (view
== VIEW(REQ_VIEW_LOG
) ||
2391 view
== VIEW(REQ_VIEW_PAGER
))) {
2392 open_view(view
, REQ_VIEW_DIFF
, OPEN_SPLIT
);
2396 /* Always scroll the view even if it was split. That way
2397 * you can use Enter to scroll through the log view and
2398 * split open each commit diff. */
2399 scroll_view(view
, REQ_SCROLL_LINE_DOWN
);
2401 /* FIXME: A minor workaround. Scrolling the view will call report("")
2402 * but if we are scrolling a non-current view this won't properly
2403 * update the view title. */
2405 update_view_title(view
);
2411 pager_grep(struct view
*view
, struct line
*line
)
2414 char *text
= line
->data
;
2419 if (regexec(view
->regex
, text
, 1, &pmatch
, 0) == REG_NOMATCH
)
2426 pager_select(struct view
*view
, struct line
*line
)
2428 if (line
->type
== LINE_COMMIT
) {
2429 char *text
= line
->data
;
2431 string_copy(view
->ref
, text
+ STRING_SIZE("commit "));
2432 string_copy(ref_commit
, view
->ref
);
2436 static struct view_ops pager_ops
= {
2450 /* Parse output from git ls-tree:
2452 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2453 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2454 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2455 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2458 #define SIZEOF_TREE_ATTR \
2459 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2461 #define TREE_UP_FORMAT "040000 tree %s\t.."
2464 tree_compare_entry(enum line_type type1
, char *name1
,
2465 enum line_type type2
, char *name2
)
2467 if (type1
!= type2
) {
2468 if (type1
== LINE_TREE_DIR
)
2473 return strcmp(name1
, name2
);
2477 tree_read(struct view
*view
, char *text
)
2479 size_t textlen
= strlen(text
);
2480 char buf
[SIZEOF_STR
];
2482 enum line_type type
;
2483 bool first_read
= view
->lines
== 0;
2485 if (textlen
<= SIZEOF_TREE_ATTR
)
2488 type
= text
[STRING_SIZE("100644 ")] == 't'
2489 ? LINE_TREE_DIR
: LINE_TREE_FILE
;
2492 /* Add path info line */
2493 if (string_format(buf
, "Directory path /%s", opt_path
) &&
2494 realloc_lines(view
, view
->line_size
+ 1) &&
2495 pager_read(view
, buf
))
2496 view
->line
[view
->lines
- 1].type
= LINE_DEFAULT
;
2500 /* Insert "link" to parent directory. */
2502 string_format(buf
, TREE_UP_FORMAT
, view
->ref
) &&
2503 realloc_lines(view
, view
->line_size
+ 1) &&
2504 pager_read(view
, buf
))
2505 view
->line
[view
->lines
- 1].type
= LINE_TREE_DIR
;
2510 /* Strip the path part ... */
2512 size_t pathlen
= textlen
- SIZEOF_TREE_ATTR
;
2513 size_t striplen
= strlen(opt_path
);
2514 char *path
= text
+ SIZEOF_TREE_ATTR
;
2516 if (pathlen
> striplen
)
2517 memmove(path
, path
+ striplen
,
2518 pathlen
- striplen
+ 1);
2521 /* Skip "Directory ..." and ".." line. */
2522 for (pos
= 1 + !!*opt_path
; pos
< view
->lines
; pos
++) {
2523 struct line
*line
= &view
->line
[pos
];
2524 char *path1
= ((char *) line
->data
) + SIZEOF_TREE_ATTR
;
2525 char *path2
= text
+ SIZEOF_TREE_ATTR
;
2526 int cmp
= tree_compare_entry(line
->type
, path1
, type
, path2
);
2531 text
= strdup(text
);
2535 if (view
->lines
> pos
)
2536 memmove(&view
->line
[pos
+ 1], &view
->line
[pos
],
2537 (view
->lines
- pos
) * sizeof(*line
));
2539 line
= &view
->line
[pos
];
2546 if (!pager_read(view
, text
))
2549 /* Move the current line to the first tree entry. */
2553 view
->line
[view
->lines
- 1].type
= type
;
2558 tree_enter(struct view
*view
, struct line
*line
)
2560 enum open_flags flags
= OPEN_DEFAULT
;
2561 char *data
= line
->data
;
2562 enum request request
;
2564 switch (line
->type
) {
2566 /* Depending on whether it is a subdir or parent (updir?) link
2567 * mangle the path buffer. */
2568 if (line
== &view
->line
[1] && *opt_path
) {
2569 size_t path_len
= strlen(opt_path
);
2570 char *dirsep
= opt_path
+ path_len
- 1;
2572 while (dirsep
> opt_path
&& dirsep
[-1] != '/')
2578 size_t pathlen
= strlen(opt_path
);
2579 size_t origlen
= pathlen
;
2580 char *basename
= data
+ SIZEOF_TREE_ATTR
;
2582 if (!string_format_from(opt_path
, &pathlen
, "%s/", basename
)) {
2583 opt_path
[origlen
] = 0;
2588 /* Trees and subtrees share the same ID, so they are not not
2589 * unique like blobs. */
2590 flags
|= OPEN_RELOAD
;
2591 request
= REQ_VIEW_TREE
;
2594 case LINE_TREE_FILE
:
2595 /* This causes the blob view to become split, and not having it
2596 * in the tree dir case will make the blob view automatically
2597 * disappear when moving to a different directory. */
2598 flags
|= OPEN_SPLIT
;
2599 request
= REQ_VIEW_BLOB
;
2606 open_view(view
, request
, flags
);
2608 if (!VIEW(request
)->pipe
)
2611 /* For tree views insert the path to the parent as the first line. */
2612 if (request
== REQ_VIEW_BLOB
) {
2613 /* Mirror what is showed in the title bar. */
2614 string_ncopy(ref_blob
, data
+ STRING_SIZE("100644 blob "), 40);
2615 string_copy(VIEW(REQ_VIEW_BLOB
)->ref
, ref_blob
);
2623 tree_select(struct view
*view
, struct line
*line
)
2625 if (line
->type
== LINE_TREE_DIR
|| line
->type
== LINE_TREE_FILE
) {
2626 char *text
= line
->data
;
2628 string_ncopy(view
->ref
, text
+ STRING_SIZE("100644 blob "), 40);
2629 string_copy(ref_blob
, view
->ref
);
2633 static struct view_ops tree_ops
= {
2643 blob_read(struct view
*view
, char *line
)
2645 bool state
= pager_read(view
, line
);
2648 view
->line
[view
->lines
- 1].type
= LINE_DEFAULT
;
2653 static struct view_ops blob_ops
= {
2668 char id
[41]; /* SHA1 ID. */
2669 char title
[75]; /* First line of the commit message. */
2670 char author
[75]; /* Author of the commit. */
2671 struct tm time
; /* Date from the author ident. */
2672 struct ref
**refs
; /* Repository references. */
2673 chtype graph
[SIZEOF_REVGRAPH
]; /* Ancestry chain graphics. */
2674 size_t graph_size
; /* The width of the graph array. */
2678 main_draw(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
)
2680 char buf
[DATE_COLS
+ 1];
2681 struct commit
*commit
= line
->data
;
2682 enum line_type type
;
2688 if (!*commit
->author
)
2691 wmove(view
->win
, lineno
, col
);
2695 wattrset(view
->win
, get_line_attr(type
));
2696 wchgat(view
->win
, -1, 0, type
, NULL
);
2699 type
= LINE_MAIN_COMMIT
;
2700 wattrset(view
->win
, get_line_attr(LINE_MAIN_DATE
));
2703 timelen
= strftime(buf
, sizeof(buf
), DATE_FORMAT
, &commit
->time
);
2704 waddnstr(view
->win
, buf
, timelen
);
2705 waddstr(view
->win
, " ");
2708 wmove(view
->win
, lineno
, col
);
2709 if (type
!= LINE_CURSOR
)
2710 wattrset(view
->win
, get_line_attr(LINE_MAIN_AUTHOR
));
2713 authorlen
= utf8_length(commit
->author
, AUTHOR_COLS
- 2, &col
, &trimmed
);
2715 authorlen
= strlen(commit
->author
);
2716 if (authorlen
> AUTHOR_COLS
- 2) {
2717 authorlen
= AUTHOR_COLS
- 2;
2723 waddnstr(view
->win
, commit
->author
, authorlen
);
2724 if (type
!= LINE_CURSOR
)
2725 wattrset(view
->win
, get_line_attr(LINE_MAIN_DELIM
));
2726 waddch(view
->win
, '~');
2728 waddstr(view
->win
, commit
->author
);
2732 if (type
!= LINE_CURSOR
)
2733 wattrset(view
->win
, A_NORMAL
);
2735 if (opt_rev_graph
&& commit
->graph_size
) {
2738 wmove(view
->win
, lineno
, col
);
2739 /* Using waddch() instead of waddnstr() ensures that
2740 * they'll be rendered correctly for the cursor line. */
2741 for (i
= 0; i
< commit
->graph_size
; i
++)
2742 waddch(view
->win
, commit
->graph
[i
]);
2744 col
+= commit
->graph_size
+ 1;
2747 wmove(view
->win
, lineno
, col
);
2753 if (type
== LINE_CURSOR
)
2755 else if (commit
->refs
[i
]->tag
)
2756 wattrset(view
->win
, get_line_attr(LINE_MAIN_TAG
));
2758 wattrset(view
->win
, get_line_attr(LINE_MAIN_REF
));
2759 waddstr(view
->win
, "[");
2760 waddstr(view
->win
, commit
->refs
[i
]->name
);
2761 waddstr(view
->win
, "]");
2762 if (type
!= LINE_CURSOR
)
2763 wattrset(view
->win
, A_NORMAL
);
2764 waddstr(view
->win
, " ");
2765 col
+= strlen(commit
->refs
[i
]->name
) + STRING_SIZE("[] ");
2766 } while (commit
->refs
[i
++]->next
);
2769 if (type
!= LINE_CURSOR
)
2770 wattrset(view
->win
, get_line_attr(type
));
2773 int titlelen
= strlen(commit
->title
);
2775 if (col
+ titlelen
> view
->width
)
2776 titlelen
= view
->width
- col
;
2778 waddnstr(view
->win
, commit
->title
, titlelen
);
2784 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2786 main_read(struct view
*view
, char *line
)
2788 enum line_type type
= get_line_type(line
);
2789 struct commit
*commit
= view
->lines
2790 ? view
->line
[view
->lines
- 1].data
: NULL
;
2794 commit
= calloc(1, sizeof(struct commit
));
2798 line
+= STRING_SIZE("commit ");
2800 view
->line
[view
->lines
++].data
= commit
;
2801 string_copy(commit
->id
, line
);
2802 commit
->refs
= get_refs(commit
->id
);
2803 commit
->graph
[commit
->graph_size
++] = ACS_LTEE
;
2808 char *ident
= line
+ STRING_SIZE("author ");
2809 char *end
= strchr(ident
, '<');
2815 char *email
= end
+ 1;
2817 for (; end
> ident
&& isspace(end
[-1]); end
--) ;
2819 if (end
== ident
&& *email
) {
2821 end
= strchr(ident
, '>');
2822 for (; end
> ident
&& isspace(end
[-1]); end
--) ;
2827 /* End is NULL or ident meaning there's no author. */
2831 string_copy(commit
->author
, ident
);
2833 /* Parse epoch and timezone */
2835 char *secs
= strchr(end
+ 1, '>');
2839 if (!secs
|| secs
[1] != ' ')
2843 time
= (time_t) atol(secs
);
2844 zone
= strchr(secs
, ' ');
2845 if (zone
&& strlen(zone
) == STRING_SIZE(" +0700")) {
2849 tz
= ('0' - zone
[1]) * 60 * 60 * 10;
2850 tz
+= ('0' - zone
[2]) * 60 * 60;
2851 tz
+= ('0' - zone
[3]) * 60;
2852 tz
+= ('0' - zone
[4]) * 60;
2859 gmtime_r(&time
, &commit
->time
);
2867 /* Fill in the commit title if it has not already been set. */
2868 if (commit
->title
[0])
2871 /* Require titles to start with a non-space character at the
2872 * offset used by git log. */
2873 /* FIXME: More gracefull handling of titles; append "..." to
2874 * shortened titles, etc. */
2875 if (strncmp(line
, " ", 4) ||
2879 string_copy(commit
->title
, line
+ 4);
2886 main_enter(struct view
*view
, struct line
*line
)
2888 enum open_flags flags
= display
[0] == view ? OPEN_SPLIT
: OPEN_DEFAULT
;
2890 open_view(view
, REQ_VIEW_DIFF
, flags
);
2895 main_grep(struct view
*view
, struct line
*line
)
2897 struct commit
*commit
= line
->data
;
2898 enum { S_TITLE
, S_AUTHOR
, S_DATE
, S_END
} state
;
2899 char buf
[DATE_COLS
+ 1];
2902 for (state
= S_TITLE
; state
< S_END
; state
++) {
2906 case S_TITLE
: text
= commit
->title
; break;
2907 case S_AUTHOR
: text
= commit
->author
; break;
2909 if (!strftime(buf
, sizeof(buf
), DATE_FORMAT
, &commit
->time
))
2918 if (regexec(view
->regex
, text
, 1, &pmatch
, 0) != REG_NOMATCH
)
2926 main_select(struct view
*view
, struct line
*line
)
2928 struct commit
*commit
= line
->data
;
2930 string_copy(view
->ref
, commit
->id
);
2931 string_copy(ref_commit
, view
->ref
);
2934 static struct view_ops main_ops
= {
2945 * Unicode / UTF-8 handling
2947 * NOTE: Much of the following code for dealing with unicode is derived from
2948 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2949 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2952 /* I've (over)annotated a lot of code snippets because I am not entirely
2953 * confident that the approach taken by this small UTF-8 interface is correct.
2957 unicode_width(unsigned long c
)
2960 (c
<= 0x115f /* Hangul Jamo */
2963 || (c
>= 0x2e80 && c
<= 0xa4cf && c
!= 0x303f)
2965 || (c
>= 0xac00 && c
<= 0xd7a3) /* Hangul Syllables */
2966 || (c
>= 0xf900 && c
<= 0xfaff) /* CJK Compatibility Ideographs */
2967 || (c
>= 0xfe30 && c
<= 0xfe6f) /* CJK Compatibility Forms */
2968 || (c
>= 0xff00 && c
<= 0xff60) /* Fullwidth Forms */
2969 || (c
>= 0xffe0 && c
<= 0xffe6)
2970 || (c
>= 0x20000 && c
<= 0x2fffd)
2971 || (c
>= 0x30000 && c
<= 0x3fffd)))
2977 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2978 * Illegal bytes are set one. */
2979 static const unsigned char utf8_bytes
[256] = {
2980 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,
2981 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,
2982 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,
2983 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,
2984 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,
2985 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,
2986 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,
2987 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,
2990 /* Decode UTF-8 multi-byte representation into a unicode character. */
2991 static inline unsigned long
2992 utf8_to_unicode(const char *string
, size_t length
)
2994 unsigned long unicode
;
2998 unicode
= string
[0];
3001 unicode
= (string
[0] & 0x1f) << 6;
3002 unicode
+= (string
[1] & 0x3f);
3005 unicode
= (string
[0] & 0x0f) << 12;
3006 unicode
+= ((string
[1] & 0x3f) << 6);
3007 unicode
+= (string
[2] & 0x3f);
3010 unicode
= (string
[0] & 0x0f) << 18;
3011 unicode
+= ((string
[1] & 0x3f) << 12);
3012 unicode
+= ((string
[2] & 0x3f) << 6);
3013 unicode
+= (string
[3] & 0x3f);
3016 unicode
= (string
[0] & 0x0f) << 24;
3017 unicode
+= ((string
[1] & 0x3f) << 18);
3018 unicode
+= ((string
[2] & 0x3f) << 12);
3019 unicode
+= ((string
[3] & 0x3f) << 6);
3020 unicode
+= (string
[4] & 0x3f);
3023 unicode
= (string
[0] & 0x01) << 30;
3024 unicode
+= ((string
[1] & 0x3f) << 24);
3025 unicode
+= ((string
[2] & 0x3f) << 18);
3026 unicode
+= ((string
[3] & 0x3f) << 12);
3027 unicode
+= ((string
[4] & 0x3f) << 6);
3028 unicode
+= (string
[5] & 0x3f);
3031 die("Invalid unicode length");
3034 /* Invalid characters could return the special 0xfffd value but NUL
3035 * should be just as good. */
3036 return unicode
> 0xffff ?
0 : unicode
;
3039 /* Calculates how much of string can be shown within the given maximum width
3040 * and sets trimmed parameter to non-zero value if all of string could not be
3043 * Additionally, adds to coloffset how many many columns to move to align with
3044 * the expected position. Takes into account how multi-byte and double-width
3045 * characters will effect the cursor position.
3047 * Returns the number of bytes to output from string to satisfy max_width. */
3049 utf8_length(const char *string
, size_t max_width
, int *coloffset
, int *trimmed
)
3051 const char *start
= string
;
3052 const char *end
= strchr(string
, '\0');
3058 while (string
< end
) {
3059 int c
= *(unsigned char *) string
;
3060 unsigned char bytes
= utf8_bytes
[c
];
3062 unsigned long unicode
;
3064 if (string
+ bytes
> end
)
3067 /* Change representation to figure out whether
3068 * it is a single- or double-width character. */
3070 unicode
= utf8_to_unicode(string
, bytes
);
3071 /* FIXME: Graceful handling of invalid unicode character. */
3075 ucwidth
= unicode_width(unicode
);
3077 if (width
> max_width
) {
3082 /* The column offset collects the differences between the
3083 * number of bytes encoding a character and the number of
3084 * columns will be used for rendering said character.
3086 * So if some character A is encoded in 2 bytes, but will be
3087 * represented on the screen using only 1 byte this will and up
3088 * adding 1 to the multi-byte column offset.
3090 * Assumes that no double-width character can be encoding in
3091 * less than two bytes. */
3092 if (bytes
> ucwidth
)
3093 mbwidth
+= bytes
- ucwidth
;
3098 *coloffset
+= mbwidth
;
3100 return string
- start
;
3108 /* Whether or not the curses interface has been initialized. */
3109 static bool cursed
= FALSE
;
3111 /* The status window is used for polling keystrokes. */
3112 static WINDOW
*status_win
;
3114 /* Update status and title window. */
3116 report(const char *msg
, ...)
3118 static bool empty
= TRUE
;
3119 struct view
*view
= display
[current_view
];
3121 if (!empty
|| *msg
) {
3124 va_start(args
, msg
);
3127 wmove(status_win
, 0, 0);
3129 vwprintw(status_win
, msg
, args
);
3134 wrefresh(status_win
);
3139 update_view_title(view
);
3140 update_display_cursor();
3143 /* Controls when nodelay should be in effect when polling user input. */
3145 set_nonblocking_input(bool loading
)
3147 static unsigned int loading_views
;
3149 if ((loading
== FALSE
&& loading_views
-- == 1) ||
3150 (loading
== TRUE
&& loading_views
++ == 0))
3151 nodelay(status_win
, loading
);
3159 /* Initialize the curses library */
3160 if (isatty(STDIN_FILENO
)) {
3161 cursed
= !!initscr();
3163 /* Leave stdin and stdout alone when acting as a pager. */
3164 FILE *io
= fopen("/dev/tty", "r+");
3167 die("Failed to open /dev/tty");
3168 cursed
= !!newterm(NULL
, io
, io
);
3172 die("Failed to initialize curses");
3174 nonl(); /* Tell curses not to do NL->CR/NL on output */
3175 cbreak(); /* Take input chars one at a time, no wait for \n */
3176 noecho(); /* Don't echo input */
3177 leaveok(stdscr
, TRUE
);
3182 getmaxyx(stdscr
, y
, x
);
3183 status_win
= newwin(1, 0, y
- 1, 0);
3185 die("Failed to create status window");
3187 /* Enable keyboard mapping */
3188 keypad(status_win
, TRUE
);
3189 wbkgdset(status_win
, get_line_attr(LINE_STATUS
));
3193 read_prompt(const char *prompt
)
3195 enum { READING
, STOP
, CANCEL
} status
= READING
;
3196 static char buf
[sizeof(opt_cmd
) - STRING_SIZE("git \0")];
3199 while (status
== READING
) {
3203 foreach_view (view
, i
)
3206 report("%s%.*s", prompt
, pos
, buf
);
3207 /* Refresh, accept single keystroke of input */
3208 key
= wgetch(status_win
);
3213 status
= pos ? STOP
: CANCEL
;
3231 if (pos
>= sizeof(buf
)) {
3232 report("Input string too long");
3237 buf
[pos
++] = (char) key
;
3241 if (status
== CANCEL
) {
3242 /* Clear the status window */
3253 * Repository references
3256 static struct ref
*refs
;
3257 static size_t refs_size
;
3259 /* Id <-> ref store */
3260 static struct ref
***id_refs
;
3261 static size_t id_refs_size
;
3263 static struct ref
**
3266 struct ref
***tmp_id_refs
;
3267 struct ref
**ref_list
= NULL
;
3268 size_t ref_list_size
= 0;
3271 for (i
= 0; i
< id_refs_size
; i
++)
3272 if (!strcmp(id
, id_refs
[i
][0]->id
))
3275 tmp_id_refs
= realloc(id_refs
, (id_refs_size
+ 1) * sizeof(*id_refs
));
3279 id_refs
= tmp_id_refs
;
3281 for (i
= 0; i
< refs_size
; i
++) {
3284 if (strcmp(id
, refs
[i
].id
))
3287 tmp
= realloc(ref_list
, (ref_list_size
+ 1) * sizeof(*ref_list
));
3295 if (ref_list_size
> 0)
3296 ref_list
[ref_list_size
- 1]->next
= 1;
3297 ref_list
[ref_list_size
] = &refs
[i
];
3299 /* XXX: The properties of the commit chains ensures that we can
3300 * safely modify the shared ref. The repo references will
3301 * always be similar for the same id. */
3302 ref_list
[ref_list_size
]->next
= 0;
3307 id_refs
[id_refs_size
++] = ref_list
;
3313 read_ref(char *id
, int idlen
, char *name
, int namelen
)
3318 if (!strncmp(name
, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3319 /* Commits referenced by tags has "^{}" appended. */
3320 if (name
[namelen
- 1] != '}')
3323 while (namelen
> 0 && name
[namelen
] != '^')
3327 namelen
-= STRING_SIZE("refs/tags/");
3328 name
+= STRING_SIZE("refs/tags/");
3330 } else if (!strncmp(name
, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3331 namelen
-= STRING_SIZE("refs/heads/");
3332 name
+= STRING_SIZE("refs/heads/");
3334 } else if (!strcmp(name
, "HEAD")) {
3338 refs
= realloc(refs
, sizeof(*refs
) * (refs_size
+ 1));
3342 ref
= &refs
[refs_size
++];
3343 ref
->name
= malloc(namelen
+ 1);
3347 strncpy(ref
->name
, name
, namelen
);
3348 ref
->name
[namelen
] = 0;
3350 string_copy(ref
->id
, id
);
3358 const char *cmd_env
= getenv("TIG_LS_REMOTE");
3359 const char *cmd
= cmd_env
&& *cmd_env ? cmd_env
: TIG_LS_REMOTE
;
3361 return read_properties(popen(cmd
, "r"), "\t", read_ref
);
3365 read_repo_config_option(char *name
, int namelen
, char *value
, int valuelen
)
3367 if (!strcmp(name
, "i18n.commitencoding"))
3368 string_copy(opt_encoding
, value
);
3374 load_repo_config(void)
3376 return read_properties(popen("git repo-config --list", "r"),
3377 "=", read_repo_config_option
);
3381 read_properties(FILE *pipe
, const char *separators
,
3382 int (*read_property
)(char *, int, char *, int))
3384 char buffer
[BUFSIZ
];
3391 while (state
== OK
&& (name
= fgets(buffer
, sizeof(buffer
), pipe
))) {
3396 name
= chomp_string(name
);
3397 namelen
= strcspn(name
, separators
);
3399 if (name
[namelen
]) {
3401 value
= chomp_string(name
+ namelen
+ 1);
3402 valuelen
= strlen(value
);
3409 state
= read_property(name
, namelen
, value
, valuelen
);
3412 if (state
!= ERR
&& ferror(pipe
))
3425 static void __NORETURN
3428 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3434 static void __NORETURN
3435 die(const char *err
, ...)
3441 va_start(args
, err
);
3442 fputs("tig: ", stderr
);
3443 vfprintf(stderr
, err
, args
);
3444 fputs("\n", stderr
);
3451 main(int argc
, char *argv
[])
3454 enum request request
;
3457 signal(SIGINT
, quit
);
3459 if (setlocale(LC_ALL
, "")) {
3460 string_copy(opt_codeset
, nl_langinfo(CODESET
));
3463 if (load_options() == ERR
)
3464 die("Failed to load user config.");
3466 /* Load the repo config file so options can be overwritten from
3467 * the command line. */
3468 if (load_repo_config() == ERR
)
3469 die("Failed to load repo config.");
3471 if (!parse_options(argc
, argv
))
3474 if (*opt_codeset
&& strcmp(opt_codeset
, opt_encoding
)) {
3475 opt_iconv
= iconv_open(opt_codeset
, opt_encoding
);
3476 if (opt_iconv
== ICONV_NONE
)
3477 die("Failed to initialize character set conversion");
3480 if (load_refs() == ERR
)
3481 die("Failed to load refs.");
3483 /* Require a git repository unless when running in pager mode. */
3484 if (refs_size
== 0 && opt_request
!= REQ_VIEW_PAGER
)
3485 die("Not a git repository");
3487 for (i
= 0; i
< ARRAY_SIZE(views
) && (view
= &views
[i
]); i
++)
3488 view
->cmd_env
= getenv(view
->cmd_env
);
3490 request
= opt_request
;
3494 while (view_driver(display
[current_view
], request
)) {
3498 foreach_view (view
, i
)
3501 /* Refresh, accept single keystroke of input */
3502 key
= wgetch(status_win
);
3504 request
= get_keybinding(display
[current_view
]->keymap
, key
);
3506 /* Some low-level request handling. This keeps access to
3507 * status_win restricted. */
3511 char *cmd
= read_prompt(":");
3513 if (cmd
&& string_format(opt_cmd
, "git %s", cmd
)) {
3514 if (strncmp(cmd
, "show", 4) && isspace(cmd
[4])) {
3515 opt_request
= REQ_VIEW_DIFF
;
3517 opt_request
= REQ_VIEW_PAGER
;
3526 case REQ_SEARCH_BACK
:
3528 const char *prompt
= request
== REQ_SEARCH
3530 char *search
= read_prompt(prompt
);
3533 string_copy(opt_search
, search
);
3538 case REQ_SCREEN_RESIZE
:
3542 getmaxyx(stdscr
, height
, width
);
3544 /* Resize the status view and let the view driver take
3545 * care of resizing the displayed views. */
3546 wresize(status_win
, 1, width
);
3547 mvwin(status_win
, height
- 1, 0);
3548 wrefresh(status_win
);