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
, bool redraw
)
1529 case REQ_MOVE_FIRST_LINE
:
1530 steps
= -view
->lineno
;
1533 case REQ_MOVE_LAST_LINE
:
1534 steps
= view
->lines
- view
->lineno
- 1;
1537 case REQ_MOVE_PAGE_UP
:
1538 steps
= view
->height
> view
->lineno
1539 ?
-view
->lineno
: -view
->height
;
1542 case REQ_MOVE_PAGE_DOWN
:
1543 steps
= view
->lineno
+ view
->height
>= view
->lines
1544 ? view
->lines
- view
->lineno
- 1 : view
->height
;
1556 die("request %d not handled in switch", request
);
1559 if (steps
<= 0 && view
->lineno
== 0) {
1560 report("Cannot move beyond the first line");
1563 } else if (steps
>= 0 && view
->lineno
+ 1 >= view
->lines
) {
1564 report("Cannot move beyond the last line");
1568 /* Move the current line */
1569 view
->lineno
+= steps
;
1570 assert(0 <= view
->lineno
&& view
->lineno
< view
->lines
);
1572 /* Repaint the old "current" line if we be scrolling */
1573 if (ABS(steps
) < view
->height
)
1574 draw_view_line(view
, view
->lineno
- steps
- view
->offset
);
1576 /* Check whether the view needs to be scrolled */
1577 if (view
->lineno
< view
->offset
||
1578 view
->lineno
>= view
->offset
+ view
->height
) {
1579 if (steps
< 0 && -steps
> view
->offset
) {
1580 steps
= -view
->offset
;
1582 } else if (steps
> 0) {
1583 if (view
->lineno
== view
->lines
- 1 &&
1584 view
->lines
> view
->height
) {
1585 steps
= view
->lines
- view
->offset
- 1;
1586 if (steps
>= view
->height
)
1587 steps
-= view
->height
- 1;
1591 do_scroll_view(view
, steps
);
1595 /* Draw the current line */
1596 draw_view_line(view
, view
->lineno
- view
->offset
);
1601 redrawwin(view
->win
);
1602 wrefresh(view
->win
);
1611 static void search_view(struct view
*view
, enum request request
);
1614 find_next_line(struct view
*view
, unsigned long lineno
, struct line
*line
)
1616 assert(view_is_displayed(view
));
1618 if (!view
->ops
->grep(view
, line
))
1621 if (lineno
- view
->offset
>= view
->height
) {
1622 view
->offset
= lineno
;
1623 view
->lineno
= lineno
;
1627 unsigned long old_lineno
= view
->lineno
- view
->offset
;
1629 view
->lineno
= lineno
;
1630 draw_view_line(view
, old_lineno
);
1632 draw_view_line(view
, view
->lineno
- view
->offset
);
1633 redrawwin(view
->win
);
1634 wrefresh(view
->win
);
1637 report("Line %ld matches '%s'", lineno
+ 1, view
->grep
);
1642 find_next(struct view
*view
, enum request request
)
1644 unsigned long lineno
= view
->lineno
;
1649 report("No previous search");
1651 search_view(view
, request
);
1661 case REQ_SEARCH_BACK
:
1670 if (request
== REQ_FIND_NEXT
|| request
== REQ_FIND_PREV
)
1671 lineno
+= direction
;
1673 /* Note, lineno is unsigned long so will wrap around in which case it
1674 * will become bigger than view->lines. */
1675 for (; lineno
< view
->lines
; lineno
+= direction
) {
1676 struct line
*line
= &view
->line
[lineno
];
1678 if (find_next_line(view
, lineno
, line
))
1682 report("No match found for '%s'", view
->grep
);
1686 search_view(struct view
*view
, enum request request
)
1691 regfree(view
->regex
);
1694 view
->regex
= calloc(1, sizeof(*view
->regex
));
1699 regex_err
= regcomp(view
->regex
, opt_search
, REG_EXTENDED
);
1700 if (regex_err
!= 0) {
1701 char buf
[SIZEOF_STR
] = "unknown error";
1703 regerror(regex_err
, view
->regex
, buf
, sizeof(buf
));
1704 report("Search failed: %s", buf
);
1708 string_copy(view
->grep
, opt_search
);
1710 find_next(view
, request
);
1714 * Incremental updating
1718 end_update(struct view
*view
)
1722 set_nonblocking_input(FALSE
);
1723 if (view
->pipe
== stdin
)
1731 begin_update(struct view
*view
)
1733 const char *id
= view
->id
;
1739 string_copy(view
->cmd
, opt_cmd
);
1741 /* When running random commands, the view ref could have become
1742 * invalid so clear it. */
1745 } else if (view
== VIEW(REQ_VIEW_TREE
)) {
1746 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1748 if (strcmp(view
->vid
, view
->id
))
1751 if (!string_format(view
->cmd
, format
, id
, opt_path
))
1755 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1757 if (!string_format(view
->cmd
, format
, id
, id
, id
, id
, id
))
1761 /* Special case for the pager view. */
1763 view
->pipe
= opt_pipe
;
1766 view
->pipe
= popen(view
->cmd
, "r");
1772 set_nonblocking_input(TRUE
);
1777 string_copy(view
->vid
, id
);
1782 for (i
= 0; i
< view
->lines
; i
++)
1783 if (view
->line
[i
].data
)
1784 free(view
->line
[i
].data
);
1790 view
->start_time
= time(NULL
);
1795 static struct line
*
1796 realloc_lines(struct view
*view
, size_t line_size
)
1798 struct line
*tmp
= realloc(view
->line
, sizeof(*view
->line
) * line_size
);
1804 view
->line_size
= line_size
;
1809 update_view(struct view
*view
)
1811 char in_buffer
[BUFSIZ
];
1812 char out_buffer
[BUFSIZ
* 2];
1814 /* The number of lines to read. If too low it will cause too much
1815 * redrawing (and possible flickering), if too high responsiveness
1817 unsigned long lines
= view
->height
;
1818 int redraw_from
= -1;
1823 /* Only redraw if lines are visible. */
1824 if (view
->offset
+ view
->height
>= view
->lines
)
1825 redraw_from
= view
->lines
- view
->offset
;
1827 /* FIXME: This is probably not perfect for backgrounded views. */
1828 if (!realloc_lines(view
, view
->lines
+ lines
))
1831 while ((line
= fgets(in_buffer
, sizeof(in_buffer
), view
->pipe
))) {
1832 size_t linelen
= strlen(line
);
1835 line
[linelen
- 1] = 0;
1837 if (opt_iconv
!= ICONV_NONE
) {
1839 size_t inlen
= linelen
;
1841 char *outbuf
= out_buffer
;
1842 size_t outlen
= sizeof(out_buffer
);
1846 ret
= iconv(opt_iconv
, &inbuf
, &inlen
, &outbuf
, &outlen
);
1847 if (ret
!= (size_t) -1) {
1849 linelen
= strlen(out_buffer
);
1853 if (!view
->ops
->read(view
, line
))
1863 lines
= view
->lines
;
1864 for (digits
= 0; lines
; digits
++)
1867 /* Keep the displayed view in sync with line number scaling. */
1868 if (digits
!= view
->digits
) {
1869 view
->digits
= digits
;
1874 if (!view_is_displayed(view
))
1877 if (view
== VIEW(REQ_VIEW_TREE
)) {
1878 /* Clear the view and redraw everything since the tree sorting
1879 * might have rearranged things. */
1882 } else if (redraw_from
>= 0) {
1883 /* If this is an incremental update, redraw the previous line
1884 * since for commits some members could have changed when
1885 * loading the main view. */
1886 if (redraw_from
> 0)
1889 /* Incrementally draw avoids flickering. */
1890 redraw_view_from(view
, redraw_from
);
1893 /* Update the title _after_ the redraw so that if the redraw picks up a
1894 * commit reference in view->ref it'll be available here. */
1895 update_view_title(view
);
1898 if (ferror(view
->pipe
)) {
1899 report("Failed to read: %s", strerror(errno
));
1902 } else if (feof(view
->pipe
)) {
1910 report("Allocation failure");
1922 static void open_help_view(struct view
*view
)
1925 int lines
= ARRAY_SIZE(req_info
) + 2;
1928 if (view
->lines
> 0)
1931 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++)
1932 if (!req_info
[i
].request
)
1935 view
->line
= calloc(lines
, sizeof(*view
->line
));
1937 report("Allocation failure");
1941 view
->ops
->read(view
, "Quick reference for tig keybindings:");
1943 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++) {
1946 if (!req_info
[i
].request
) {
1947 view
->ops
->read(view
, "");
1948 view
->ops
->read(view
, req_info
[i
].help
);
1952 key
= get_key(req_info
[i
].request
);
1953 if (!string_format(buf
, "%-25s %s", key
, req_info
[i
].help
))
1956 view
->ops
->read(view
, buf
);
1961 OPEN_DEFAULT
= 0, /* Use default view switching. */
1962 OPEN_SPLIT
= 1, /* Split current view. */
1963 OPEN_BACKGROUNDED
= 2, /* Backgrounded. */
1964 OPEN_RELOAD
= 4, /* Reload view even if it is the current. */
1968 open_view(struct view
*prev
, enum request request
, enum open_flags flags
)
1970 bool backgrounded
= !!(flags
& OPEN_BACKGROUNDED
);
1971 bool split
= !!(flags
& OPEN_SPLIT
);
1972 bool reload
= !!(flags
& OPEN_RELOAD
);
1973 struct view
*view
= VIEW(request
);
1974 int nviews
= displayed_views();
1975 struct view
*base_view
= display
[0];
1977 if (view
== prev
&& nviews
== 1 && !reload
) {
1978 report("Already in %s view", view
->name
);
1982 if (view
== VIEW(REQ_VIEW_HELP
)) {
1983 open_help_view(view
);
1985 } else if ((reload
|| strcmp(view
->vid
, view
->id
)) &&
1986 !begin_update(view
)) {
1987 report("Failed to load %s view", view
->name
);
1996 /* Maximize the current view. */
1997 memset(display
, 0, sizeof(display
));
1999 display
[current_view
] = view
;
2002 /* Resize the view when switching between split- and full-screen,
2003 * or when switching between two different full-screen views. */
2004 if (nviews
!= displayed_views() ||
2005 (nviews
== 1 && base_view
!= display
[0]))
2008 if (split
&& prev
->lineno
- prev
->offset
>= prev
->height
) {
2009 /* Take the title line into account. */
2010 int lines
= prev
->lineno
- prev
->offset
- prev
->height
+ 1;
2012 /* Scroll the view that was split if the current line is
2013 * outside the new limited view. */
2014 do_scroll_view(prev
, lines
);
2017 if (prev
&& view
!= prev
) {
2018 if (split
&& !backgrounded
) {
2019 /* "Blur" the previous view. */
2020 update_view_title(prev
);
2023 view
->parent
= prev
;
2026 if (view
->pipe
&& view
->lines
== 0) {
2027 /* Clear the old view and let the incremental updating refill
2036 /* If the view is backgrounded the above calls to report()
2037 * won't redraw the view title. */
2039 update_view_title(view
);
2044 * User request switch noodle
2048 view_driver(struct view
*view
, enum request request
)
2055 case REQ_MOVE_PAGE_UP
:
2056 case REQ_MOVE_PAGE_DOWN
:
2057 case REQ_MOVE_FIRST_LINE
:
2058 case REQ_MOVE_LAST_LINE
:
2059 move_view(view
, request
, TRUE
);
2062 case REQ_SCROLL_LINE_DOWN
:
2063 case REQ_SCROLL_LINE_UP
:
2064 case REQ_SCROLL_PAGE_DOWN
:
2065 case REQ_SCROLL_PAGE_UP
:
2066 scroll_view(view
, request
);
2071 report("No file chosen, press 't' to open tree view");
2080 case REQ_VIEW_PAGER
:
2081 open_view(view
, request
, OPEN_DEFAULT
);
2086 request
= request
== REQ_NEXT ? REQ_MOVE_DOWN
: REQ_MOVE_UP
;
2088 if ((view
== VIEW(REQ_VIEW_DIFF
) &&
2089 view
->parent
== VIEW(REQ_VIEW_MAIN
)) ||
2090 (view
== VIEW(REQ_VIEW_BLOB
) &&
2091 view
->parent
== VIEW(REQ_VIEW_TREE
))) {
2092 bool redraw
= display
[1] == view
;
2094 view
= view
->parent
;
2095 move_view(view
, request
, redraw
);
2097 update_view_title(view
);
2099 move_view(view
, request
, TRUE
);
2106 report("Nothing to enter");
2109 return view
->ops
->enter(view
, &view
->line
[view
->lineno
]);
2113 int nviews
= displayed_views();
2114 int next_view
= (current_view
+ 1) % nviews
;
2116 if (next_view
== current_view
) {
2117 report("Only one view is displayed");
2121 current_view
= next_view
;
2122 /* Blur out the title of the previous view. */
2123 update_view_title(view
);
2127 case REQ_TOGGLE_LINENO
:
2128 opt_line_number
= !opt_line_number
;
2132 case REQ_TOGGLE_REV_GRAPH
:
2133 opt_rev_graph
= !opt_rev_graph
;
2138 /* Always reload^Wrerun commands from the prompt. */
2139 open_view(view
, opt_request
, OPEN_RELOAD
);
2143 case REQ_SEARCH_BACK
:
2144 search_view(view
, request
);
2149 find_next(view
, request
);
2152 case REQ_STOP_LOADING
:
2153 for (i
= 0; i
< ARRAY_SIZE(views
); i
++) {
2156 report("Stopped loading the %s view", view
->name
),
2161 case REQ_SHOW_VERSION
:
2162 report("%s (built %s)", VERSION
, __DATE__
);
2165 case REQ_SCREEN_RESIZE
:
2168 case REQ_SCREEN_REDRAW
:
2176 case REQ_VIEW_CLOSE
:
2177 /* XXX: Mark closed views by letting view->parent point to the
2178 * view itself. Parents to closed view should never be
2181 view
->parent
->parent
!= view
->parent
) {
2182 memset(display
, 0, sizeof(display
));
2184 display
[current_view
] = view
->parent
;
2185 view
->parent
= view
;
2195 /* An unknown key will show most commonly used commands. */
2196 report("Unknown key, press 'h' for help");
2209 pager_draw(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
)
2211 char *text
= line
->data
;
2212 enum line_type type
= line
->type
;
2213 int textlen
= strlen(text
);
2216 wmove(view
->win
, lineno
, 0);
2220 wchgat(view
->win
, -1, 0, type
, NULL
);
2223 attr
= get_line_attr(type
);
2224 wattrset(view
->win
, attr
);
2226 if (opt_line_number
|| opt_tab_size
< TABSIZE
) {
2227 static char spaces
[] = " ";
2228 int col_offset
= 0, col
= 0;
2230 if (opt_line_number
) {
2231 unsigned long real_lineno
= view
->offset
+ lineno
+ 1;
2233 if (real_lineno
== 1 ||
2234 (real_lineno
% opt_num_interval
) == 0) {
2235 wprintw(view
->win
, "%.*d", view
->digits
, real_lineno
);
2238 waddnstr(view
->win
, spaces
,
2239 MIN(view
->digits
, STRING_SIZE(spaces
)));
2241 waddstr(view
->win
, ": ");
2242 col_offset
= view
->digits
+ 2;
2245 while (text
&& col_offset
+ col
< view
->width
) {
2246 int cols_max
= view
->width
- col_offset
- col
;
2250 if (*text
== '\t') {
2252 assert(sizeof(spaces
) > TABSIZE
);
2254 cols
= opt_tab_size
- (col
% opt_tab_size
);
2257 text
= strchr(text
, '\t');
2258 cols
= line ? text
- pos
: strlen(pos
);
2261 waddnstr(view
->win
, pos
, MIN(cols
, cols_max
));
2266 int col
= 0, pos
= 0;
2268 for (; pos
< textlen
&& col
< view
->width
; pos
++, col
++)
2269 if (text
[pos
] == '\t')
2270 col
+= TABSIZE
- (col
% TABSIZE
) - 1;
2272 waddnstr(view
->win
, text
, pos
);
2279 add_describe_ref(char *buf
, size_t *bufpos
, char *commit_id
, const char *sep
)
2281 char refbuf
[SIZEOF_STR
];
2285 if (!string_format(refbuf
, "git describe %s", commit_id
))
2288 pipe
= popen(refbuf
, "r");
2292 if ((ref
= fgets(refbuf
, sizeof(refbuf
), pipe
)))
2293 ref
= chomp_string(ref
);
2299 /* This is the only fatal call, since it can "corrupt" the buffer. */
2300 if (!string_nformat(buf
, SIZEOF_STR
, bufpos
, "%s%s", sep
, ref
))
2307 add_pager_refs(struct view
*view
, struct line
*line
)
2309 char buf
[SIZEOF_STR
];
2310 char *commit_id
= line
->data
+ STRING_SIZE("commit ");
2312 size_t bufpos
= 0, refpos
= 0;
2313 const char *sep
= "Refs: ";
2314 bool is_tag
= FALSE
;
2316 assert(line
->type
== LINE_COMMIT
);
2318 refs
= get_refs(commit_id
);
2320 if (view
== VIEW(REQ_VIEW_DIFF
))
2321 goto try_add_describe_ref
;
2326 struct ref
*ref
= refs
[refpos
];
2327 char *fmt
= ref
->tag ?
"%s[%s]" : "%s%s";
2329 if (!string_format_from(buf
, &bufpos
, fmt
, sep
, ref
->name
))
2334 } while (refs
[refpos
++]->next
);
2336 if (!is_tag
&& view
== VIEW(REQ_VIEW_DIFF
)) {
2337 try_add_describe_ref
:
2338 /* Add <tag>-g<commit_id> "fake" reference. */
2339 if (!add_describe_ref(buf
, &bufpos
, commit_id
, sep
))
2346 if (!realloc_lines(view
, view
->line_size
+ 1))
2349 line
= &view
->line
[view
->lines
];
2350 line
->data
= strdup(buf
);
2354 line
->type
= LINE_PP_REFS
;
2359 pager_read(struct view
*view
, char *data
)
2361 struct line
*line
= &view
->line
[view
->lines
];
2363 line
->data
= strdup(data
);
2367 line
->type
= get_line_type(line
->data
);
2370 if (line
->type
== LINE_COMMIT
&&
2371 (view
== VIEW(REQ_VIEW_DIFF
) ||
2372 view
== VIEW(REQ_VIEW_LOG
)))
2373 add_pager_refs(view
, line
);
2379 pager_enter(struct view
*view
, struct line
*line
)
2383 if (line
->type
== LINE_COMMIT
&&
2384 (view
== VIEW(REQ_VIEW_LOG
) ||
2385 view
== VIEW(REQ_VIEW_PAGER
))) {
2386 open_view(view
, REQ_VIEW_DIFF
, OPEN_SPLIT
);
2390 /* Always scroll the view even if it was split. That way
2391 * you can use Enter to scroll through the log view and
2392 * split open each commit diff. */
2393 scroll_view(view
, REQ_SCROLL_LINE_DOWN
);
2395 /* FIXME: A minor workaround. Scrolling the view will call report("")
2396 * but if we are scrolling a non-current view this won't properly
2397 * update the view title. */
2399 update_view_title(view
);
2405 pager_grep(struct view
*view
, struct line
*line
)
2408 char *text
= line
->data
;
2413 if (regexec(view
->regex
, text
, 1, &pmatch
, 0) == REG_NOMATCH
)
2420 pager_select(struct view
*view
, struct line
*line
)
2422 if (line
->type
== LINE_COMMIT
) {
2423 char *text
= line
->data
;
2425 string_copy(view
->ref
, text
+ STRING_SIZE("commit "));
2426 string_copy(ref_commit
, view
->ref
);
2430 static struct view_ops pager_ops
= {
2444 /* Parse output from git ls-tree:
2446 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2447 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2448 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2449 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2452 #define SIZEOF_TREE_ATTR \
2453 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2455 #define TREE_UP_FORMAT "040000 tree %s\t.."
2458 tree_compare_entry(enum line_type type1
, char *name1
,
2459 enum line_type type2
, char *name2
)
2461 if (type1
!= type2
) {
2462 if (type1
== LINE_TREE_DIR
)
2467 return strcmp(name1
, name2
);
2471 tree_read(struct view
*view
, char *text
)
2473 size_t textlen
= strlen(text
);
2474 char buf
[SIZEOF_STR
];
2476 enum line_type type
;
2477 bool first_read
= view
->lines
== 0;
2479 if (textlen
<= SIZEOF_TREE_ATTR
)
2482 type
= text
[STRING_SIZE("100644 ")] == 't'
2483 ? LINE_TREE_DIR
: LINE_TREE_FILE
;
2486 /* Add path info line */
2487 if (string_format(buf
, "Directory path /%s", opt_path
) &&
2488 realloc_lines(view
, view
->line_size
+ 1) &&
2489 pager_read(view
, buf
))
2490 view
->line
[view
->lines
- 1].type
= LINE_DEFAULT
;
2494 /* Insert "link" to parent directory. */
2496 string_format(buf
, TREE_UP_FORMAT
, view
->ref
) &&
2497 realloc_lines(view
, view
->line_size
+ 1) &&
2498 pager_read(view
, buf
))
2499 view
->line
[view
->lines
- 1].type
= LINE_TREE_DIR
;
2504 /* Strip the path part ... */
2506 size_t pathlen
= textlen
- SIZEOF_TREE_ATTR
;
2507 size_t striplen
= strlen(opt_path
);
2508 char *path
= text
+ SIZEOF_TREE_ATTR
;
2510 if (pathlen
> striplen
)
2511 memmove(path
, path
+ striplen
,
2512 pathlen
- striplen
+ 1);
2515 /* Skip "Directory ..." and ".." line. */
2516 for (pos
= 1 + !!*opt_path
; pos
< view
->lines
; pos
++) {
2517 struct line
*line
= &view
->line
[pos
];
2518 char *path1
= ((char *) line
->data
) + SIZEOF_TREE_ATTR
;
2519 char *path2
= text
+ SIZEOF_TREE_ATTR
;
2520 int cmp
= tree_compare_entry(line
->type
, path1
, type
, path2
);
2525 text
= strdup(text
);
2529 if (view
->lines
> pos
)
2530 memmove(&view
->line
[pos
+ 1], &view
->line
[pos
],
2531 (view
->lines
- pos
) * sizeof(*line
));
2533 line
= &view
->line
[pos
];
2540 if (!pager_read(view
, text
))
2543 /* Move the current line to the first tree entry. */
2547 view
->line
[view
->lines
- 1].type
= type
;
2552 tree_enter(struct view
*view
, struct line
*line
)
2554 enum open_flags flags
= OPEN_DEFAULT
;
2555 char *data
= line
->data
;
2556 enum request request
;
2558 switch (line
->type
) {
2560 /* Depending on whether it is a subdir or parent (updir?) link
2561 * mangle the path buffer. */
2562 if (line
== &view
->line
[1] && *opt_path
) {
2563 size_t path_len
= strlen(opt_path
);
2564 char *dirsep
= opt_path
+ path_len
- 1;
2566 while (dirsep
> opt_path
&& dirsep
[-1] != '/')
2572 size_t pathlen
= strlen(opt_path
);
2573 size_t origlen
= pathlen
;
2574 char *basename
= data
+ SIZEOF_TREE_ATTR
;
2576 if (!string_format_from(opt_path
, &pathlen
, "%s/", basename
)) {
2577 opt_path
[origlen
] = 0;
2582 /* Trees and subtrees share the same ID, so they are not not
2583 * unique like blobs. */
2584 flags
|= OPEN_RELOAD
;
2585 request
= REQ_VIEW_TREE
;
2588 case LINE_TREE_FILE
:
2589 /* This causes the blob view to become split, and not having it
2590 * in the tree dir case will make the blob view automatically
2591 * disappear when moving to a different directory. */
2592 flags
|= OPEN_SPLIT
;
2593 request
= REQ_VIEW_BLOB
;
2600 open_view(view
, request
, flags
);
2602 if (!VIEW(request
)->pipe
)
2605 /* For tree views insert the path to the parent as the first line. */
2606 if (request
== REQ_VIEW_BLOB
) {
2607 /* Mirror what is showed in the title bar. */
2608 string_ncopy(ref_blob
, data
+ STRING_SIZE("100644 blob "), 40);
2609 string_copy(VIEW(REQ_VIEW_BLOB
)->ref
, ref_blob
);
2617 tree_select(struct view
*view
, struct line
*line
)
2619 if (line
->type
== LINE_TREE_DIR
|| line
->type
== LINE_TREE_FILE
) {
2620 char *text
= line
->data
;
2622 string_ncopy(view
->ref
, text
+ STRING_SIZE("100644 blob "), 40);
2623 string_copy(ref_blob
, view
->ref
);
2627 static struct view_ops tree_ops
= {
2637 blob_read(struct view
*view
, char *line
)
2639 bool state
= pager_read(view
, line
);
2642 view
->line
[view
->lines
- 1].type
= LINE_DEFAULT
;
2647 static struct view_ops blob_ops
= {
2662 char id
[41]; /* SHA1 ID. */
2663 char title
[75]; /* First line of the commit message. */
2664 char author
[75]; /* Author of the commit. */
2665 struct tm time
; /* Date from the author ident. */
2666 struct ref
**refs
; /* Repository references. */
2667 chtype graph
[SIZEOF_REVGRAPH
]; /* Ancestry chain graphics. */
2668 size_t graph_size
; /* The width of the graph array. */
2672 main_draw(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
)
2674 char buf
[DATE_COLS
+ 1];
2675 struct commit
*commit
= line
->data
;
2676 enum line_type type
;
2682 if (!*commit
->author
)
2685 wmove(view
->win
, lineno
, col
);
2689 wattrset(view
->win
, get_line_attr(type
));
2690 wchgat(view
->win
, -1, 0, type
, NULL
);
2693 type
= LINE_MAIN_COMMIT
;
2694 wattrset(view
->win
, get_line_attr(LINE_MAIN_DATE
));
2697 timelen
= strftime(buf
, sizeof(buf
), DATE_FORMAT
, &commit
->time
);
2698 waddnstr(view
->win
, buf
, timelen
);
2699 waddstr(view
->win
, " ");
2702 wmove(view
->win
, lineno
, col
);
2703 if (type
!= LINE_CURSOR
)
2704 wattrset(view
->win
, get_line_attr(LINE_MAIN_AUTHOR
));
2707 authorlen
= utf8_length(commit
->author
, AUTHOR_COLS
- 2, &col
, &trimmed
);
2709 authorlen
= strlen(commit
->author
);
2710 if (authorlen
> AUTHOR_COLS
- 2) {
2711 authorlen
= AUTHOR_COLS
- 2;
2717 waddnstr(view
->win
, commit
->author
, authorlen
);
2718 if (type
!= LINE_CURSOR
)
2719 wattrset(view
->win
, get_line_attr(LINE_MAIN_DELIM
));
2720 waddch(view
->win
, '~');
2722 waddstr(view
->win
, commit
->author
);
2726 if (type
!= LINE_CURSOR
)
2727 wattrset(view
->win
, A_NORMAL
);
2729 if (opt_rev_graph
&& commit
->graph_size
) {
2732 wmove(view
->win
, lineno
, col
);
2733 /* Using waddch() instead of waddnstr() ensures that
2734 * they'll be rendered correctly for the cursor line. */
2735 for (i
= 0; i
< commit
->graph_size
; i
++)
2736 waddch(view
->win
, commit
->graph
[i
]);
2738 col
+= commit
->graph_size
+ 1;
2741 wmove(view
->win
, lineno
, col
);
2747 if (type
== LINE_CURSOR
)
2749 else if (commit
->refs
[i
]->tag
)
2750 wattrset(view
->win
, get_line_attr(LINE_MAIN_TAG
));
2752 wattrset(view
->win
, get_line_attr(LINE_MAIN_REF
));
2753 waddstr(view
->win
, "[");
2754 waddstr(view
->win
, commit
->refs
[i
]->name
);
2755 waddstr(view
->win
, "]");
2756 if (type
!= LINE_CURSOR
)
2757 wattrset(view
->win
, A_NORMAL
);
2758 waddstr(view
->win
, " ");
2759 col
+= strlen(commit
->refs
[i
]->name
) + STRING_SIZE("[] ");
2760 } while (commit
->refs
[i
++]->next
);
2763 if (type
!= LINE_CURSOR
)
2764 wattrset(view
->win
, get_line_attr(type
));
2767 int titlelen
= strlen(commit
->title
);
2769 if (col
+ titlelen
> view
->width
)
2770 titlelen
= view
->width
- col
;
2772 waddnstr(view
->win
, commit
->title
, titlelen
);
2778 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2780 main_read(struct view
*view
, char *line
)
2782 enum line_type type
= get_line_type(line
);
2783 struct commit
*commit
= view
->lines
2784 ? view
->line
[view
->lines
- 1].data
: NULL
;
2788 commit
= calloc(1, sizeof(struct commit
));
2792 line
+= STRING_SIZE("commit ");
2794 view
->line
[view
->lines
++].data
= commit
;
2795 string_copy(commit
->id
, line
);
2796 commit
->refs
= get_refs(commit
->id
);
2797 commit
->graph
[commit
->graph_size
++] = ACS_LTEE
;
2802 char *ident
= line
+ STRING_SIZE("author ");
2803 char *end
= strchr(ident
, '<');
2809 char *email
= end
+ 1;
2811 for (; end
> ident
&& isspace(end
[-1]); end
--) ;
2813 if (end
== ident
&& *email
) {
2815 end
= strchr(ident
, '>');
2816 for (; end
> ident
&& isspace(end
[-1]); end
--) ;
2821 /* End is NULL or ident meaning there's no author. */
2825 string_copy(commit
->author
, ident
);
2827 /* Parse epoch and timezone */
2829 char *secs
= strchr(end
+ 1, '>');
2833 if (!secs
|| secs
[1] != ' ')
2837 time
= (time_t) atol(secs
);
2838 zone
= strchr(secs
, ' ');
2839 if (zone
&& strlen(zone
) == STRING_SIZE(" +0700")) {
2843 tz
= ('0' - zone
[1]) * 60 * 60 * 10;
2844 tz
+= ('0' - zone
[2]) * 60 * 60;
2845 tz
+= ('0' - zone
[3]) * 60;
2846 tz
+= ('0' - zone
[4]) * 60;
2853 gmtime_r(&time
, &commit
->time
);
2861 /* Fill in the commit title if it has not already been set. */
2862 if (commit
->title
[0])
2865 /* Require titles to start with a non-space character at the
2866 * offset used by git log. */
2867 /* FIXME: More gracefull handling of titles; append "..." to
2868 * shortened titles, etc. */
2869 if (strncmp(line
, " ", 4) ||
2873 string_copy(commit
->title
, line
+ 4);
2880 main_enter(struct view
*view
, struct line
*line
)
2882 enum open_flags flags
= display
[0] == view ? OPEN_SPLIT
: OPEN_DEFAULT
;
2884 open_view(view
, REQ_VIEW_DIFF
, flags
);
2889 main_grep(struct view
*view
, struct line
*line
)
2891 struct commit
*commit
= line
->data
;
2892 enum { S_TITLE
, S_AUTHOR
, S_DATE
, S_END
} state
;
2893 char buf
[DATE_COLS
+ 1];
2896 for (state
= S_TITLE
; state
< S_END
; state
++) {
2900 case S_TITLE
: text
= commit
->title
; break;
2901 case S_AUTHOR
: text
= commit
->author
; break;
2903 if (!strftime(buf
, sizeof(buf
), DATE_FORMAT
, &commit
->time
))
2912 if (regexec(view
->regex
, text
, 1, &pmatch
, 0) != REG_NOMATCH
)
2920 main_select(struct view
*view
, struct line
*line
)
2922 struct commit
*commit
= line
->data
;
2924 string_copy(view
->ref
, commit
->id
);
2925 string_copy(ref_commit
, view
->ref
);
2928 static struct view_ops main_ops
= {
2939 * Unicode / UTF-8 handling
2941 * NOTE: Much of the following code for dealing with unicode is derived from
2942 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2943 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2946 /* I've (over)annotated a lot of code snippets because I am not entirely
2947 * confident that the approach taken by this small UTF-8 interface is correct.
2951 unicode_width(unsigned long c
)
2954 (c
<= 0x115f /* Hangul Jamo */
2957 || (c
>= 0x2e80 && c
<= 0xa4cf && c
!= 0x303f)
2959 || (c
>= 0xac00 && c
<= 0xd7a3) /* Hangul Syllables */
2960 || (c
>= 0xf900 && c
<= 0xfaff) /* CJK Compatibility Ideographs */
2961 || (c
>= 0xfe30 && c
<= 0xfe6f) /* CJK Compatibility Forms */
2962 || (c
>= 0xff00 && c
<= 0xff60) /* Fullwidth Forms */
2963 || (c
>= 0xffe0 && c
<= 0xffe6)
2964 || (c
>= 0x20000 && c
<= 0x2fffd)
2965 || (c
>= 0x30000 && c
<= 0x3fffd)))
2971 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2972 * Illegal bytes are set one. */
2973 static const unsigned char utf8_bytes
[256] = {
2974 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,
2975 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,
2976 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,
2977 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,
2978 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,
2979 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,
2980 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,
2981 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,
2984 /* Decode UTF-8 multi-byte representation into a unicode character. */
2985 static inline unsigned long
2986 utf8_to_unicode(const char *string
, size_t length
)
2988 unsigned long unicode
;
2992 unicode
= string
[0];
2995 unicode
= (string
[0] & 0x1f) << 6;
2996 unicode
+= (string
[1] & 0x3f);
2999 unicode
= (string
[0] & 0x0f) << 12;
3000 unicode
+= ((string
[1] & 0x3f) << 6);
3001 unicode
+= (string
[2] & 0x3f);
3004 unicode
= (string
[0] & 0x0f) << 18;
3005 unicode
+= ((string
[1] & 0x3f) << 12);
3006 unicode
+= ((string
[2] & 0x3f) << 6);
3007 unicode
+= (string
[3] & 0x3f);
3010 unicode
= (string
[0] & 0x0f) << 24;
3011 unicode
+= ((string
[1] & 0x3f) << 18);
3012 unicode
+= ((string
[2] & 0x3f) << 12);
3013 unicode
+= ((string
[3] & 0x3f) << 6);
3014 unicode
+= (string
[4] & 0x3f);
3017 unicode
= (string
[0] & 0x01) << 30;
3018 unicode
+= ((string
[1] & 0x3f) << 24);
3019 unicode
+= ((string
[2] & 0x3f) << 18);
3020 unicode
+= ((string
[3] & 0x3f) << 12);
3021 unicode
+= ((string
[4] & 0x3f) << 6);
3022 unicode
+= (string
[5] & 0x3f);
3025 die("Invalid unicode length");
3028 /* Invalid characters could return the special 0xfffd value but NUL
3029 * should be just as good. */
3030 return unicode
> 0xffff ?
0 : unicode
;
3033 /* Calculates how much of string can be shown within the given maximum width
3034 * and sets trimmed parameter to non-zero value if all of string could not be
3037 * Additionally, adds to coloffset how many many columns to move to align with
3038 * the expected position. Takes into account how multi-byte and double-width
3039 * characters will effect the cursor position.
3041 * Returns the number of bytes to output from string to satisfy max_width. */
3043 utf8_length(const char *string
, size_t max_width
, int *coloffset
, int *trimmed
)
3045 const char *start
= string
;
3046 const char *end
= strchr(string
, '\0');
3052 while (string
< end
) {
3053 int c
= *(unsigned char *) string
;
3054 unsigned char bytes
= utf8_bytes
[c
];
3056 unsigned long unicode
;
3058 if (string
+ bytes
> end
)
3061 /* Change representation to figure out whether
3062 * it is a single- or double-width character. */
3064 unicode
= utf8_to_unicode(string
, bytes
);
3065 /* FIXME: Graceful handling of invalid unicode character. */
3069 ucwidth
= unicode_width(unicode
);
3071 if (width
> max_width
) {
3076 /* The column offset collects the differences between the
3077 * number of bytes encoding a character and the number of
3078 * columns will be used for rendering said character.
3080 * So if some character A is encoded in 2 bytes, but will be
3081 * represented on the screen using only 1 byte this will and up
3082 * adding 1 to the multi-byte column offset.
3084 * Assumes that no double-width character can be encoding in
3085 * less than two bytes. */
3086 if (bytes
> ucwidth
)
3087 mbwidth
+= bytes
- ucwidth
;
3092 *coloffset
+= mbwidth
;
3094 return string
- start
;
3102 /* Whether or not the curses interface has been initialized. */
3103 static bool cursed
= FALSE
;
3105 /* The status window is used for polling keystrokes. */
3106 static WINDOW
*status_win
;
3108 /* Update status and title window. */
3110 report(const char *msg
, ...)
3112 static bool empty
= TRUE
;
3113 struct view
*view
= display
[current_view
];
3115 if (!empty
|| *msg
) {
3118 va_start(args
, msg
);
3121 wmove(status_win
, 0, 0);
3123 vwprintw(status_win
, msg
, args
);
3128 wrefresh(status_win
);
3133 update_view_title(view
);
3134 update_display_cursor();
3137 /* Controls when nodelay should be in effect when polling user input. */
3139 set_nonblocking_input(bool loading
)
3141 static unsigned int loading_views
;
3143 if ((loading
== FALSE
&& loading_views
-- == 1) ||
3144 (loading
== TRUE
&& loading_views
++ == 0))
3145 nodelay(status_win
, loading
);
3153 /* Initialize the curses library */
3154 if (isatty(STDIN_FILENO
)) {
3155 cursed
= !!initscr();
3157 /* Leave stdin and stdout alone when acting as a pager. */
3158 FILE *io
= fopen("/dev/tty", "r+");
3161 die("Failed to open /dev/tty");
3162 cursed
= !!newterm(NULL
, io
, io
);
3166 die("Failed to initialize curses");
3168 nonl(); /* Tell curses not to do NL->CR/NL on output */
3169 cbreak(); /* Take input chars one at a time, no wait for \n */
3170 noecho(); /* Don't echo input */
3171 leaveok(stdscr
, TRUE
);
3176 getmaxyx(stdscr
, y
, x
);
3177 status_win
= newwin(1, 0, y
- 1, 0);
3179 die("Failed to create status window");
3181 /* Enable keyboard mapping */
3182 keypad(status_win
, TRUE
);
3183 wbkgdset(status_win
, get_line_attr(LINE_STATUS
));
3187 read_prompt(const char *prompt
)
3189 enum { READING
, STOP
, CANCEL
} status
= READING
;
3190 static char buf
[sizeof(opt_cmd
) - STRING_SIZE("git \0")];
3193 while (status
== READING
) {
3197 foreach_view (view
, i
)
3200 report("%s%.*s", prompt
, pos
, buf
);
3201 /* Refresh, accept single keystroke of input */
3202 key
= wgetch(status_win
);
3207 status
= pos ? STOP
: CANCEL
;
3225 if (pos
>= sizeof(buf
)) {
3226 report("Input string too long");
3231 buf
[pos
++] = (char) key
;
3235 if (status
== CANCEL
) {
3236 /* Clear the status window */
3247 * Repository references
3250 static struct ref
*refs
;
3251 static size_t refs_size
;
3253 /* Id <-> ref store */
3254 static struct ref
***id_refs
;
3255 static size_t id_refs_size
;
3257 static struct ref
**
3260 struct ref
***tmp_id_refs
;
3261 struct ref
**ref_list
= NULL
;
3262 size_t ref_list_size
= 0;
3265 for (i
= 0; i
< id_refs_size
; i
++)
3266 if (!strcmp(id
, id_refs
[i
][0]->id
))
3269 tmp_id_refs
= realloc(id_refs
, (id_refs_size
+ 1) * sizeof(*id_refs
));
3273 id_refs
= tmp_id_refs
;
3275 for (i
= 0; i
< refs_size
; i
++) {
3278 if (strcmp(id
, refs
[i
].id
))
3281 tmp
= realloc(ref_list
, (ref_list_size
+ 1) * sizeof(*ref_list
));
3289 if (ref_list_size
> 0)
3290 ref_list
[ref_list_size
- 1]->next
= 1;
3291 ref_list
[ref_list_size
] = &refs
[i
];
3293 /* XXX: The properties of the commit chains ensures that we can
3294 * safely modify the shared ref. The repo references will
3295 * always be similar for the same id. */
3296 ref_list
[ref_list_size
]->next
= 0;
3301 id_refs
[id_refs_size
++] = ref_list
;
3307 read_ref(char *id
, int idlen
, char *name
, int namelen
)
3312 if (!strncmp(name
, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3313 /* Commits referenced by tags has "^{}" appended. */
3314 if (name
[namelen
- 1] != '}')
3317 while (namelen
> 0 && name
[namelen
] != '^')
3321 namelen
-= STRING_SIZE("refs/tags/");
3322 name
+= STRING_SIZE("refs/tags/");
3324 } else if (!strncmp(name
, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3325 namelen
-= STRING_SIZE("refs/heads/");
3326 name
+= STRING_SIZE("refs/heads/");
3328 } else if (!strcmp(name
, "HEAD")) {
3332 refs
= realloc(refs
, sizeof(*refs
) * (refs_size
+ 1));
3336 ref
= &refs
[refs_size
++];
3337 ref
->name
= malloc(namelen
+ 1);
3341 strncpy(ref
->name
, name
, namelen
);
3342 ref
->name
[namelen
] = 0;
3344 string_copy(ref
->id
, id
);
3352 const char *cmd_env
= getenv("TIG_LS_REMOTE");
3353 const char *cmd
= cmd_env
&& *cmd_env ? cmd_env
: TIG_LS_REMOTE
;
3355 return read_properties(popen(cmd
, "r"), "\t", read_ref
);
3359 read_repo_config_option(char *name
, int namelen
, char *value
, int valuelen
)
3361 if (!strcmp(name
, "i18n.commitencoding"))
3362 string_copy(opt_encoding
, value
);
3368 load_repo_config(void)
3370 return read_properties(popen("git repo-config --list", "r"),
3371 "=", read_repo_config_option
);
3375 read_properties(FILE *pipe
, const char *separators
,
3376 int (*read_property
)(char *, int, char *, int))
3378 char buffer
[BUFSIZ
];
3385 while (state
== OK
&& (name
= fgets(buffer
, sizeof(buffer
), pipe
))) {
3390 name
= chomp_string(name
);
3391 namelen
= strcspn(name
, separators
);
3393 if (name
[namelen
]) {
3395 value
= chomp_string(name
+ namelen
+ 1);
3396 valuelen
= strlen(value
);
3403 state
= read_property(name
, namelen
, value
, valuelen
);
3406 if (state
!= ERR
&& ferror(pipe
))
3419 static void __NORETURN
3422 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3428 static void __NORETURN
3429 die(const char *err
, ...)
3435 va_start(args
, err
);
3436 fputs("tig: ", stderr
);
3437 vfprintf(stderr
, err
, args
);
3438 fputs("\n", stderr
);
3445 main(int argc
, char *argv
[])
3448 enum request request
;
3451 signal(SIGINT
, quit
);
3453 if (setlocale(LC_ALL
, "")) {
3454 string_copy(opt_codeset
, nl_langinfo(CODESET
));
3457 if (load_options() == ERR
)
3458 die("Failed to load user config.");
3460 /* Load the repo config file so options can be overwritten from
3461 * the command line. */
3462 if (load_repo_config() == ERR
)
3463 die("Failed to load repo config.");
3465 if (!parse_options(argc
, argv
))
3468 if (*opt_codeset
&& strcmp(opt_codeset
, opt_encoding
)) {
3469 opt_iconv
= iconv_open(opt_codeset
, opt_encoding
);
3470 if (opt_iconv
== ICONV_NONE
)
3471 die("Failed to initialize character set conversion");
3474 if (load_refs() == ERR
)
3475 die("Failed to load refs.");
3477 /* Require a git repository unless when running in pager mode. */
3478 if (refs_size
== 0 && opt_request
!= REQ_VIEW_PAGER
)
3479 die("Not a git repository");
3481 for (i
= 0; i
< ARRAY_SIZE(views
) && (view
= &views
[i
]); i
++)
3482 view
->cmd_env
= getenv(view
->cmd_env
);
3484 request
= opt_request
;
3488 while (view_driver(display
[current_view
], request
)) {
3492 foreach_view (view
, i
)
3495 /* Refresh, accept single keystroke of input */
3496 key
= wgetch(status_win
);
3498 request
= get_keybinding(display
[current_view
]->keymap
, key
);
3500 /* Some low-level request handling. This keeps access to
3501 * status_win restricted. */
3505 char *cmd
= read_prompt(":");
3507 if (cmd
&& string_format(opt_cmd
, "git %s", cmd
)) {
3508 if (strncmp(cmd
, "show", 4) && isspace(cmd
[4])) {
3509 opt_request
= REQ_VIEW_DIFF
;
3511 opt_request
= REQ_VIEW_PAGER
;
3520 case REQ_SEARCH_BACK
:
3522 const char *prompt
= request
== REQ_SEARCH
3524 char *search
= read_prompt(prompt
);
3527 string_copy(opt_search
, search
);
3532 case REQ_SCREEN_RESIZE
:
3536 getmaxyx(stdscr
, height
, width
);
3538 /* Resize the status view and let the view driver take
3539 * care of resizing the displayed views. */
3540 wresize(status_win
, 1, width
);
3541 mvwin(status_win
, height
- 1, 0);
3542 wrefresh(status_win
);