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 int scroll_steps
= 0;
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 scroll_steps
= steps
;
1577 if (steps
< 0 && -steps
> view
->offset
) {
1578 scroll_steps
= -view
->offset
;
1580 } else if (steps
> 0) {
1581 if (view
->lineno
== view
->lines
- 1 &&
1582 view
->lines
> view
->height
) {
1583 scroll_steps
= view
->lines
- view
->offset
- 1;
1584 if (scroll_steps
>= view
->height
)
1585 scroll_steps
-= view
->height
- 1;
1590 if (!view_is_displayed(view
)) {
1591 view
->offset
+= steps
;
1592 view
->ops
->select(view
, &view
->line
[view
->lineno
]);
1596 /* Repaint the old "current" line if we be scrolling */
1597 if (ABS(steps
) < view
->height
)
1598 draw_view_line(view
, view
->lineno
- steps
- view
->offset
);
1601 do_scroll_view(view
, scroll_steps
);
1605 /* Draw the current line */
1606 draw_view_line(view
, view
->lineno
- view
->offset
);
1608 redrawwin(view
->win
);
1609 wrefresh(view
->win
);
1618 static void search_view(struct view
*view
, enum request request
);
1621 find_next_line(struct view
*view
, unsigned long lineno
, struct line
*line
)
1623 assert(view_is_displayed(view
));
1625 if (!view
->ops
->grep(view
, line
))
1628 if (lineno
- view
->offset
>= view
->height
) {
1629 view
->offset
= lineno
;
1630 view
->lineno
= lineno
;
1634 unsigned long old_lineno
= view
->lineno
- view
->offset
;
1636 view
->lineno
= lineno
;
1637 draw_view_line(view
, old_lineno
);
1639 draw_view_line(view
, view
->lineno
- view
->offset
);
1640 redrawwin(view
->win
);
1641 wrefresh(view
->win
);
1644 report("Line %ld matches '%s'", lineno
+ 1, view
->grep
);
1649 find_next(struct view
*view
, enum request request
)
1651 unsigned long lineno
= view
->lineno
;
1656 report("No previous search");
1658 search_view(view
, request
);
1668 case REQ_SEARCH_BACK
:
1677 if (request
== REQ_FIND_NEXT
|| request
== REQ_FIND_PREV
)
1678 lineno
+= direction
;
1680 /* Note, lineno is unsigned long so will wrap around in which case it
1681 * will become bigger than view->lines. */
1682 for (; lineno
< view
->lines
; lineno
+= direction
) {
1683 struct line
*line
= &view
->line
[lineno
];
1685 if (find_next_line(view
, lineno
, line
))
1689 report("No match found for '%s'", view
->grep
);
1693 search_view(struct view
*view
, enum request request
)
1698 regfree(view
->regex
);
1701 view
->regex
= calloc(1, sizeof(*view
->regex
));
1706 regex_err
= regcomp(view
->regex
, opt_search
, REG_EXTENDED
);
1707 if (regex_err
!= 0) {
1708 char buf
[SIZEOF_STR
] = "unknown error";
1710 regerror(regex_err
, view
->regex
, buf
, sizeof(buf
));
1711 report("Search failed: %s", buf
);
1715 string_copy(view
->grep
, opt_search
);
1717 find_next(view
, request
);
1721 * Incremental updating
1725 end_update(struct view
*view
)
1729 set_nonblocking_input(FALSE
);
1730 if (view
->pipe
== stdin
)
1738 begin_update(struct view
*view
)
1740 const char *id
= view
->id
;
1746 string_copy(view
->cmd
, opt_cmd
);
1748 /* When running random commands, the view ref could have become
1749 * invalid so clear it. */
1752 } else if (view
== VIEW(REQ_VIEW_TREE
)) {
1753 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1755 if (strcmp(view
->vid
, view
->id
))
1758 if (!string_format(view
->cmd
, format
, id
, opt_path
))
1762 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1764 if (!string_format(view
->cmd
, format
, id
, id
, id
, id
, id
))
1768 /* Special case for the pager view. */
1770 view
->pipe
= opt_pipe
;
1773 view
->pipe
= popen(view
->cmd
, "r");
1779 set_nonblocking_input(TRUE
);
1784 string_copy(view
->vid
, id
);
1789 for (i
= 0; i
< view
->lines
; i
++)
1790 if (view
->line
[i
].data
)
1791 free(view
->line
[i
].data
);
1797 view
->start_time
= time(NULL
);
1802 static struct line
*
1803 realloc_lines(struct view
*view
, size_t line_size
)
1805 struct line
*tmp
= realloc(view
->line
, sizeof(*view
->line
) * line_size
);
1811 view
->line_size
= line_size
;
1816 update_view(struct view
*view
)
1818 char in_buffer
[BUFSIZ
];
1819 char out_buffer
[BUFSIZ
* 2];
1821 /* The number of lines to read. If too low it will cause too much
1822 * redrawing (and possible flickering), if too high responsiveness
1824 unsigned long lines
= view
->height
;
1825 int redraw_from
= -1;
1830 /* Only redraw if lines are visible. */
1831 if (view
->offset
+ view
->height
>= view
->lines
)
1832 redraw_from
= view
->lines
- view
->offset
;
1834 /* FIXME: This is probably not perfect for backgrounded views. */
1835 if (!realloc_lines(view
, view
->lines
+ lines
))
1838 while ((line
= fgets(in_buffer
, sizeof(in_buffer
), view
->pipe
))) {
1839 size_t linelen
= strlen(line
);
1842 line
[linelen
- 1] = 0;
1844 if (opt_iconv
!= ICONV_NONE
) {
1846 size_t inlen
= linelen
;
1848 char *outbuf
= out_buffer
;
1849 size_t outlen
= sizeof(out_buffer
);
1853 ret
= iconv(opt_iconv
, &inbuf
, &inlen
, &outbuf
, &outlen
);
1854 if (ret
!= (size_t) -1) {
1856 linelen
= strlen(out_buffer
);
1860 if (!view
->ops
->read(view
, line
))
1870 lines
= view
->lines
;
1871 for (digits
= 0; lines
; digits
++)
1874 /* Keep the displayed view in sync with line number scaling. */
1875 if (digits
!= view
->digits
) {
1876 view
->digits
= digits
;
1881 if (!view_is_displayed(view
))
1884 if (view
== VIEW(REQ_VIEW_TREE
)) {
1885 /* Clear the view and redraw everything since the tree sorting
1886 * might have rearranged things. */
1889 } else if (redraw_from
>= 0) {
1890 /* If this is an incremental update, redraw the previous line
1891 * since for commits some members could have changed when
1892 * loading the main view. */
1893 if (redraw_from
> 0)
1896 /* Incrementally draw avoids flickering. */
1897 redraw_view_from(view
, redraw_from
);
1900 /* Update the title _after_ the redraw so that if the redraw picks up a
1901 * commit reference in view->ref it'll be available here. */
1902 update_view_title(view
);
1905 if (ferror(view
->pipe
)) {
1906 report("Failed to read: %s", strerror(errno
));
1909 } else if (feof(view
->pipe
)) {
1917 report("Allocation failure");
1929 static void open_help_view(struct view
*view
)
1932 int lines
= ARRAY_SIZE(req_info
) + 2;
1935 if (view
->lines
> 0)
1938 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++)
1939 if (!req_info
[i
].request
)
1942 view
->line
= calloc(lines
, sizeof(*view
->line
));
1944 report("Allocation failure");
1948 view
->ops
->read(view
, "Quick reference for tig keybindings:");
1950 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++) {
1953 if (!req_info
[i
].request
) {
1954 view
->ops
->read(view
, "");
1955 view
->ops
->read(view
, req_info
[i
].help
);
1959 key
= get_key(req_info
[i
].request
);
1960 if (!string_format(buf
, "%-25s %s", key
, req_info
[i
].help
))
1963 view
->ops
->read(view
, buf
);
1968 OPEN_DEFAULT
= 0, /* Use default view switching. */
1969 OPEN_SPLIT
= 1, /* Split current view. */
1970 OPEN_BACKGROUNDED
= 2, /* Backgrounded. */
1971 OPEN_RELOAD
= 4, /* Reload view even if it is the current. */
1975 open_view(struct view
*prev
, enum request request
, enum open_flags flags
)
1977 bool backgrounded
= !!(flags
& OPEN_BACKGROUNDED
);
1978 bool split
= !!(flags
& OPEN_SPLIT
);
1979 bool reload
= !!(flags
& OPEN_RELOAD
);
1980 struct view
*view
= VIEW(request
);
1981 int nviews
= displayed_views();
1982 struct view
*base_view
= display
[0];
1984 if (view
== prev
&& nviews
== 1 && !reload
) {
1985 report("Already in %s view", view
->name
);
1989 if (view
== VIEW(REQ_VIEW_HELP
)) {
1990 open_help_view(view
);
1992 } else if ((reload
|| strcmp(view
->vid
, view
->id
)) &&
1993 !begin_update(view
)) {
1994 report("Failed to load %s view", view
->name
);
2003 /* Maximize the current view. */
2004 memset(display
, 0, sizeof(display
));
2006 display
[current_view
] = view
;
2009 /* Resize the view when switching between split- and full-screen,
2010 * or when switching between two different full-screen views. */
2011 if (nviews
!= displayed_views() ||
2012 (nviews
== 1 && base_view
!= display
[0]))
2015 if (split
&& prev
->lineno
- prev
->offset
>= prev
->height
) {
2016 /* Take the title line into account. */
2017 int lines
= prev
->lineno
- prev
->offset
- prev
->height
+ 1;
2019 /* Scroll the view that was split if the current line is
2020 * outside the new limited view. */
2021 do_scroll_view(prev
, lines
);
2024 if (prev
&& view
!= prev
) {
2025 if (split
&& !backgrounded
) {
2026 /* "Blur" the previous view. */
2027 update_view_title(prev
);
2030 view
->parent
= prev
;
2033 if (view
->pipe
&& view
->lines
== 0) {
2034 /* Clear the old view and let the incremental updating refill
2043 /* If the view is backgrounded the above calls to report()
2044 * won't redraw the view title. */
2046 update_view_title(view
);
2051 * User request switch noodle
2055 view_driver(struct view
*view
, enum request request
)
2062 case REQ_MOVE_PAGE_UP
:
2063 case REQ_MOVE_PAGE_DOWN
:
2064 case REQ_MOVE_FIRST_LINE
:
2065 case REQ_MOVE_LAST_LINE
:
2066 move_view(view
, request
);
2069 case REQ_SCROLL_LINE_DOWN
:
2070 case REQ_SCROLL_LINE_UP
:
2071 case REQ_SCROLL_PAGE_DOWN
:
2072 case REQ_SCROLL_PAGE_UP
:
2073 scroll_view(view
, request
);
2078 report("No file chosen, press 't' to open tree view");
2087 case REQ_VIEW_PAGER
:
2088 open_view(view
, request
, OPEN_DEFAULT
);
2093 request
= request
== REQ_NEXT ? REQ_MOVE_DOWN
: REQ_MOVE_UP
;
2095 if ((view
== VIEW(REQ_VIEW_DIFF
) &&
2096 view
->parent
== VIEW(REQ_VIEW_MAIN
)) ||
2097 (view
== VIEW(REQ_VIEW_BLOB
) &&
2098 view
->parent
== VIEW(REQ_VIEW_TREE
))) {
2099 view
= view
->parent
;
2100 move_view(view
, request
);
2101 if (view_is_displayed(view
))
2102 update_view_title(view
);
2104 move_view(view
, request
);
2111 report("Nothing to enter");
2114 return view
->ops
->enter(view
, &view
->line
[view
->lineno
]);
2118 int nviews
= displayed_views();
2119 int next_view
= (current_view
+ 1) % nviews
;
2121 if (next_view
== current_view
) {
2122 report("Only one view is displayed");
2126 current_view
= next_view
;
2127 /* Blur out the title of the previous view. */
2128 update_view_title(view
);
2132 case REQ_TOGGLE_LINENO
:
2133 opt_line_number
= !opt_line_number
;
2137 case REQ_TOGGLE_REV_GRAPH
:
2138 opt_rev_graph
= !opt_rev_graph
;
2143 /* Always reload^Wrerun commands from the prompt. */
2144 open_view(view
, opt_request
, OPEN_RELOAD
);
2148 case REQ_SEARCH_BACK
:
2149 search_view(view
, request
);
2154 find_next(view
, request
);
2157 case REQ_STOP_LOADING
:
2158 for (i
= 0; i
< ARRAY_SIZE(views
); i
++) {
2161 report("Stopped loading the %s view", view
->name
),
2166 case REQ_SHOW_VERSION
:
2167 report("%s (built %s)", VERSION
, __DATE__
);
2170 case REQ_SCREEN_RESIZE
:
2173 case REQ_SCREEN_REDRAW
:
2181 case REQ_VIEW_CLOSE
:
2182 /* XXX: Mark closed views by letting view->parent point to the
2183 * view itself. Parents to closed view should never be
2186 view
->parent
->parent
!= view
->parent
) {
2187 memset(display
, 0, sizeof(display
));
2189 display
[current_view
] = view
->parent
;
2190 view
->parent
= view
;
2200 /* An unknown key will show most commonly used commands. */
2201 report("Unknown key, press 'h' for help");
2214 pager_draw(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
)
2216 char *text
= line
->data
;
2217 enum line_type type
= line
->type
;
2218 int textlen
= strlen(text
);
2221 wmove(view
->win
, lineno
, 0);
2225 wchgat(view
->win
, -1, 0, type
, NULL
);
2228 attr
= get_line_attr(type
);
2229 wattrset(view
->win
, attr
);
2231 if (opt_line_number
|| opt_tab_size
< TABSIZE
) {
2232 static char spaces
[] = " ";
2233 int col_offset
= 0, col
= 0;
2235 if (opt_line_number
) {
2236 unsigned long real_lineno
= view
->offset
+ lineno
+ 1;
2238 if (real_lineno
== 1 ||
2239 (real_lineno
% opt_num_interval
) == 0) {
2240 wprintw(view
->win
, "%.*d", view
->digits
, real_lineno
);
2243 waddnstr(view
->win
, spaces
,
2244 MIN(view
->digits
, STRING_SIZE(spaces
)));
2246 waddstr(view
->win
, ": ");
2247 col_offset
= view
->digits
+ 2;
2250 while (text
&& col_offset
+ col
< view
->width
) {
2251 int cols_max
= view
->width
- col_offset
- col
;
2255 if (*text
== '\t') {
2257 assert(sizeof(spaces
) > TABSIZE
);
2259 cols
= opt_tab_size
- (col
% opt_tab_size
);
2262 text
= strchr(text
, '\t');
2263 cols
= line ? text
- pos
: strlen(pos
);
2266 waddnstr(view
->win
, pos
, MIN(cols
, cols_max
));
2271 int col
= 0, pos
= 0;
2273 for (; pos
< textlen
&& col
< view
->width
; pos
++, col
++)
2274 if (text
[pos
] == '\t')
2275 col
+= TABSIZE
- (col
% TABSIZE
) - 1;
2277 waddnstr(view
->win
, text
, pos
);
2284 add_describe_ref(char *buf
, size_t *bufpos
, char *commit_id
, const char *sep
)
2286 char refbuf
[SIZEOF_STR
];
2290 if (!string_format(refbuf
, "git describe %s", commit_id
))
2293 pipe
= popen(refbuf
, "r");
2297 if ((ref
= fgets(refbuf
, sizeof(refbuf
), pipe
)))
2298 ref
= chomp_string(ref
);
2304 /* This is the only fatal call, since it can "corrupt" the buffer. */
2305 if (!string_nformat(buf
, SIZEOF_STR
, bufpos
, "%s%s", sep
, ref
))
2312 add_pager_refs(struct view
*view
, struct line
*line
)
2314 char buf
[SIZEOF_STR
];
2315 char *commit_id
= line
->data
+ STRING_SIZE("commit ");
2317 size_t bufpos
= 0, refpos
= 0;
2318 const char *sep
= "Refs: ";
2319 bool is_tag
= FALSE
;
2321 assert(line
->type
== LINE_COMMIT
);
2323 refs
= get_refs(commit_id
);
2325 if (view
== VIEW(REQ_VIEW_DIFF
))
2326 goto try_add_describe_ref
;
2331 struct ref
*ref
= refs
[refpos
];
2332 char *fmt
= ref
->tag ?
"%s[%s]" : "%s%s";
2334 if (!string_format_from(buf
, &bufpos
, fmt
, sep
, ref
->name
))
2339 } while (refs
[refpos
++]->next
);
2341 if (!is_tag
&& view
== VIEW(REQ_VIEW_DIFF
)) {
2342 try_add_describe_ref
:
2343 /* Add <tag>-g<commit_id> "fake" reference. */
2344 if (!add_describe_ref(buf
, &bufpos
, commit_id
, sep
))
2351 if (!realloc_lines(view
, view
->line_size
+ 1))
2354 line
= &view
->line
[view
->lines
];
2355 line
->data
= strdup(buf
);
2359 line
->type
= LINE_PP_REFS
;
2364 pager_read(struct view
*view
, char *data
)
2366 struct line
*line
= &view
->line
[view
->lines
];
2368 line
->data
= strdup(data
);
2372 line
->type
= get_line_type(line
->data
);
2375 if (line
->type
== LINE_COMMIT
&&
2376 (view
== VIEW(REQ_VIEW_DIFF
) ||
2377 view
== VIEW(REQ_VIEW_LOG
)))
2378 add_pager_refs(view
, line
);
2384 pager_enter(struct view
*view
, struct line
*line
)
2388 if (line
->type
== LINE_COMMIT
&&
2389 (view
== VIEW(REQ_VIEW_LOG
) ||
2390 view
== VIEW(REQ_VIEW_PAGER
))) {
2391 open_view(view
, REQ_VIEW_DIFF
, OPEN_SPLIT
);
2395 /* Always scroll the view even if it was split. That way
2396 * you can use Enter to scroll through the log view and
2397 * split open each commit diff. */
2398 scroll_view(view
, REQ_SCROLL_LINE_DOWN
);
2400 /* FIXME: A minor workaround. Scrolling the view will call report("")
2401 * but if we are scrolling a non-current view this won't properly
2402 * update the view title. */
2404 update_view_title(view
);
2410 pager_grep(struct view
*view
, struct line
*line
)
2413 char *text
= line
->data
;
2418 if (regexec(view
->regex
, text
, 1, &pmatch
, 0) == REG_NOMATCH
)
2425 pager_select(struct view
*view
, struct line
*line
)
2427 if (line
->type
== LINE_COMMIT
) {
2428 char *text
= line
->data
;
2430 string_copy(view
->ref
, text
+ STRING_SIZE("commit "));
2431 string_copy(ref_commit
, view
->ref
);
2435 static struct view_ops pager_ops
= {
2449 /* Parse output from git ls-tree:
2451 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2452 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2453 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2454 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2457 #define SIZEOF_TREE_ATTR \
2458 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2460 #define TREE_UP_FORMAT "040000 tree %s\t.."
2463 tree_compare_entry(enum line_type type1
, char *name1
,
2464 enum line_type type2
, char *name2
)
2466 if (type1
!= type2
) {
2467 if (type1
== LINE_TREE_DIR
)
2472 return strcmp(name1
, name2
);
2476 tree_read(struct view
*view
, char *text
)
2478 size_t textlen
= strlen(text
);
2479 char buf
[SIZEOF_STR
];
2481 enum line_type type
;
2482 bool first_read
= view
->lines
== 0;
2484 if (textlen
<= SIZEOF_TREE_ATTR
)
2487 type
= text
[STRING_SIZE("100644 ")] == 't'
2488 ? LINE_TREE_DIR
: LINE_TREE_FILE
;
2491 /* Add path info line */
2492 if (string_format(buf
, "Directory path /%s", opt_path
) &&
2493 realloc_lines(view
, view
->line_size
+ 1) &&
2494 pager_read(view
, buf
))
2495 view
->line
[view
->lines
- 1].type
= LINE_DEFAULT
;
2499 /* Insert "link" to parent directory. */
2501 string_format(buf
, TREE_UP_FORMAT
, view
->ref
) &&
2502 realloc_lines(view
, view
->line_size
+ 1) &&
2503 pager_read(view
, buf
))
2504 view
->line
[view
->lines
- 1].type
= LINE_TREE_DIR
;
2509 /* Strip the path part ... */
2511 size_t pathlen
= textlen
- SIZEOF_TREE_ATTR
;
2512 size_t striplen
= strlen(opt_path
);
2513 char *path
= text
+ SIZEOF_TREE_ATTR
;
2515 if (pathlen
> striplen
)
2516 memmove(path
, path
+ striplen
,
2517 pathlen
- striplen
+ 1);
2520 /* Skip "Directory ..." and ".." line. */
2521 for (pos
= 1 + !!*opt_path
; pos
< view
->lines
; pos
++) {
2522 struct line
*line
= &view
->line
[pos
];
2523 char *path1
= ((char *) line
->data
) + SIZEOF_TREE_ATTR
;
2524 char *path2
= text
+ SIZEOF_TREE_ATTR
;
2525 int cmp
= tree_compare_entry(line
->type
, path1
, type
, path2
);
2530 text
= strdup(text
);
2534 if (view
->lines
> pos
)
2535 memmove(&view
->line
[pos
+ 1], &view
->line
[pos
],
2536 (view
->lines
- pos
) * sizeof(*line
));
2538 line
= &view
->line
[pos
];
2545 if (!pager_read(view
, text
))
2548 /* Move the current line to the first tree entry. */
2552 view
->line
[view
->lines
- 1].type
= type
;
2557 tree_enter(struct view
*view
, struct line
*line
)
2559 enum open_flags flags
= display
[0] == view ? OPEN_SPLIT
: OPEN_DEFAULT
;
2560 char *data
= line
->data
;
2561 enum request request
;
2563 switch (line
->type
) {
2565 /* Depending on whether it is a subdir or parent (updir?) link
2566 * mangle the path buffer. */
2567 if (line
== &view
->line
[1] && *opt_path
) {
2568 size_t path_len
= strlen(opt_path
);
2569 char *dirsep
= opt_path
+ path_len
- 1;
2571 while (dirsep
> opt_path
&& dirsep
[-1] != '/')
2577 size_t pathlen
= strlen(opt_path
);
2578 size_t origlen
= pathlen
;
2579 char *basename
= data
+ SIZEOF_TREE_ATTR
;
2581 if (!string_format_from(opt_path
, &pathlen
, "%s/", basename
)) {
2582 opt_path
[origlen
] = 0;
2587 /* Trees and subtrees share the same ID, so they are not not
2588 * unique like blobs. */
2589 flags
|= OPEN_RELOAD
;
2590 request
= REQ_VIEW_TREE
;
2593 case LINE_TREE_FILE
:
2594 request
= REQ_VIEW_BLOB
;
2601 open_view(view
, request
, flags
);
2603 if (!VIEW(request
)->pipe
)
2606 /* For tree views insert the path to the parent as the first line. */
2607 if (request
== REQ_VIEW_BLOB
) {
2608 /* Mirror what is showed in the title bar. */
2609 string_ncopy(ref_blob
, data
+ STRING_SIZE("100644 blob "), 40);
2610 string_copy(VIEW(REQ_VIEW_BLOB
)->ref
, ref_blob
);
2618 tree_select(struct view
*view
, struct line
*line
)
2620 if (line
->type
== LINE_TREE_DIR
|| line
->type
== LINE_TREE_FILE
) {
2621 char *text
= line
->data
;
2623 string_ncopy(view
->ref
, text
+ STRING_SIZE("100644 blob "), 40);
2624 string_copy(ref_blob
, view
->ref
);
2628 static struct view_ops tree_ops
= {
2638 blob_read(struct view
*view
, char *line
)
2640 bool state
= pager_read(view
, line
);
2643 view
->line
[view
->lines
- 1].type
= LINE_DEFAULT
;
2648 static struct view_ops blob_ops
= {
2663 char id
[41]; /* SHA1 ID. */
2664 char title
[75]; /* First line of the commit message. */
2665 char author
[75]; /* Author of the commit. */
2666 struct tm time
; /* Date from the author ident. */
2667 struct ref
**refs
; /* Repository references. */
2668 chtype graph
[SIZEOF_REVGRAPH
]; /* Ancestry chain graphics. */
2669 size_t graph_size
; /* The width of the graph array. */
2673 main_draw(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
)
2675 char buf
[DATE_COLS
+ 1];
2676 struct commit
*commit
= line
->data
;
2677 enum line_type type
;
2683 if (!*commit
->author
)
2686 wmove(view
->win
, lineno
, col
);
2690 wattrset(view
->win
, get_line_attr(type
));
2691 wchgat(view
->win
, -1, 0, type
, NULL
);
2694 type
= LINE_MAIN_COMMIT
;
2695 wattrset(view
->win
, get_line_attr(LINE_MAIN_DATE
));
2698 timelen
= strftime(buf
, sizeof(buf
), DATE_FORMAT
, &commit
->time
);
2699 waddnstr(view
->win
, buf
, timelen
);
2700 waddstr(view
->win
, " ");
2703 wmove(view
->win
, lineno
, col
);
2704 if (type
!= LINE_CURSOR
)
2705 wattrset(view
->win
, get_line_attr(LINE_MAIN_AUTHOR
));
2708 authorlen
= utf8_length(commit
->author
, AUTHOR_COLS
- 2, &col
, &trimmed
);
2710 authorlen
= strlen(commit
->author
);
2711 if (authorlen
> AUTHOR_COLS
- 2) {
2712 authorlen
= AUTHOR_COLS
- 2;
2718 waddnstr(view
->win
, commit
->author
, authorlen
);
2719 if (type
!= LINE_CURSOR
)
2720 wattrset(view
->win
, get_line_attr(LINE_MAIN_DELIM
));
2721 waddch(view
->win
, '~');
2723 waddstr(view
->win
, commit
->author
);
2727 if (type
!= LINE_CURSOR
)
2728 wattrset(view
->win
, A_NORMAL
);
2730 if (opt_rev_graph
&& commit
->graph_size
) {
2733 wmove(view
->win
, lineno
, col
);
2734 /* Using waddch() instead of waddnstr() ensures that
2735 * they'll be rendered correctly for the cursor line. */
2736 for (i
= 0; i
< commit
->graph_size
; i
++)
2737 waddch(view
->win
, commit
->graph
[i
]);
2739 col
+= commit
->graph_size
+ 1;
2742 wmove(view
->win
, lineno
, col
);
2748 if (type
== LINE_CURSOR
)
2750 else if (commit
->refs
[i
]->tag
)
2751 wattrset(view
->win
, get_line_attr(LINE_MAIN_TAG
));
2753 wattrset(view
->win
, get_line_attr(LINE_MAIN_REF
));
2754 waddstr(view
->win
, "[");
2755 waddstr(view
->win
, commit
->refs
[i
]->name
);
2756 waddstr(view
->win
, "]");
2757 if (type
!= LINE_CURSOR
)
2758 wattrset(view
->win
, A_NORMAL
);
2759 waddstr(view
->win
, " ");
2760 col
+= strlen(commit
->refs
[i
]->name
) + STRING_SIZE("[] ");
2761 } while (commit
->refs
[i
++]->next
);
2764 if (type
!= LINE_CURSOR
)
2765 wattrset(view
->win
, get_line_attr(type
));
2768 int titlelen
= strlen(commit
->title
);
2770 if (col
+ titlelen
> view
->width
)
2771 titlelen
= view
->width
- col
;
2773 waddnstr(view
->win
, commit
->title
, titlelen
);
2779 /* Reads git log --pretty=raw output and parses it into the commit struct. */
2781 main_read(struct view
*view
, char *line
)
2783 enum line_type type
= get_line_type(line
);
2784 struct commit
*commit
= view
->lines
2785 ? view
->line
[view
->lines
- 1].data
: NULL
;
2789 commit
= calloc(1, sizeof(struct commit
));
2793 line
+= STRING_SIZE("commit ");
2795 view
->line
[view
->lines
++].data
= commit
;
2796 string_copy(commit
->id
, line
);
2797 commit
->refs
= get_refs(commit
->id
);
2798 commit
->graph
[commit
->graph_size
++] = ACS_LTEE
;
2803 char *ident
= line
+ STRING_SIZE("author ");
2804 char *end
= strchr(ident
, '<');
2810 char *email
= end
+ 1;
2812 for (; end
> ident
&& isspace(end
[-1]); end
--) ;
2814 if (end
== ident
&& *email
) {
2816 end
= strchr(ident
, '>');
2817 for (; end
> ident
&& isspace(end
[-1]); end
--) ;
2822 /* End is NULL or ident meaning there's no author. */
2826 string_copy(commit
->author
, ident
);
2828 /* Parse epoch and timezone */
2830 char *secs
= strchr(end
+ 1, '>');
2834 if (!secs
|| secs
[1] != ' ')
2838 time
= (time_t) atol(secs
);
2839 zone
= strchr(secs
, ' ');
2840 if (zone
&& strlen(zone
) == STRING_SIZE(" +0700")) {
2844 tz
= ('0' - zone
[1]) * 60 * 60 * 10;
2845 tz
+= ('0' - zone
[2]) * 60 * 60;
2846 tz
+= ('0' - zone
[3]) * 60;
2847 tz
+= ('0' - zone
[4]) * 60;
2854 gmtime_r(&time
, &commit
->time
);
2862 /* Fill in the commit title if it has not already been set. */
2863 if (commit
->title
[0])
2866 /* Require titles to start with a non-space character at the
2867 * offset used by git log. */
2868 /* FIXME: More gracefull handling of titles; append "..." to
2869 * shortened titles, etc. */
2870 if (strncmp(line
, " ", 4) ||
2874 string_copy(commit
->title
, line
+ 4);
2881 main_enter(struct view
*view
, struct line
*line
)
2883 enum open_flags flags
= display
[0] == view ? OPEN_SPLIT
: OPEN_DEFAULT
;
2885 open_view(view
, REQ_VIEW_DIFF
, flags
);
2890 main_grep(struct view
*view
, struct line
*line
)
2892 struct commit
*commit
= line
->data
;
2893 enum { S_TITLE
, S_AUTHOR
, S_DATE
, S_END
} state
;
2894 char buf
[DATE_COLS
+ 1];
2897 for (state
= S_TITLE
; state
< S_END
; state
++) {
2901 case S_TITLE
: text
= commit
->title
; break;
2902 case S_AUTHOR
: text
= commit
->author
; break;
2904 if (!strftime(buf
, sizeof(buf
), DATE_FORMAT
, &commit
->time
))
2913 if (regexec(view
->regex
, text
, 1, &pmatch
, 0) != REG_NOMATCH
)
2921 main_select(struct view
*view
, struct line
*line
)
2923 struct commit
*commit
= line
->data
;
2925 string_copy(view
->ref
, commit
->id
);
2926 string_copy(ref_commit
, view
->ref
);
2929 static struct view_ops main_ops
= {
2940 * Unicode / UTF-8 handling
2942 * NOTE: Much of the following code for dealing with unicode is derived from
2943 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
2944 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
2947 /* I've (over)annotated a lot of code snippets because I am not entirely
2948 * confident that the approach taken by this small UTF-8 interface is correct.
2952 unicode_width(unsigned long c
)
2955 (c
<= 0x115f /* Hangul Jamo */
2958 || (c
>= 0x2e80 && c
<= 0xa4cf && c
!= 0x303f)
2960 || (c
>= 0xac00 && c
<= 0xd7a3) /* Hangul Syllables */
2961 || (c
>= 0xf900 && c
<= 0xfaff) /* CJK Compatibility Ideographs */
2962 || (c
>= 0xfe30 && c
<= 0xfe6f) /* CJK Compatibility Forms */
2963 || (c
>= 0xff00 && c
<= 0xff60) /* Fullwidth Forms */
2964 || (c
>= 0xffe0 && c
<= 0xffe6)
2965 || (c
>= 0x20000 && c
<= 0x2fffd)
2966 || (c
>= 0x30000 && c
<= 0x3fffd)))
2972 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
2973 * Illegal bytes are set one. */
2974 static const unsigned char utf8_bytes
[256] = {
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 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 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,
2982 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,
2985 /* Decode UTF-8 multi-byte representation into a unicode character. */
2986 static inline unsigned long
2987 utf8_to_unicode(const char *string
, size_t length
)
2989 unsigned long unicode
;
2993 unicode
= string
[0];
2996 unicode
= (string
[0] & 0x1f) << 6;
2997 unicode
+= (string
[1] & 0x3f);
3000 unicode
= (string
[0] & 0x0f) << 12;
3001 unicode
+= ((string
[1] & 0x3f) << 6);
3002 unicode
+= (string
[2] & 0x3f);
3005 unicode
= (string
[0] & 0x0f) << 18;
3006 unicode
+= ((string
[1] & 0x3f) << 12);
3007 unicode
+= ((string
[2] & 0x3f) << 6);
3008 unicode
+= (string
[3] & 0x3f);
3011 unicode
= (string
[0] & 0x0f) << 24;
3012 unicode
+= ((string
[1] & 0x3f) << 18);
3013 unicode
+= ((string
[2] & 0x3f) << 12);
3014 unicode
+= ((string
[3] & 0x3f) << 6);
3015 unicode
+= (string
[4] & 0x3f);
3018 unicode
= (string
[0] & 0x01) << 30;
3019 unicode
+= ((string
[1] & 0x3f) << 24);
3020 unicode
+= ((string
[2] & 0x3f) << 18);
3021 unicode
+= ((string
[3] & 0x3f) << 12);
3022 unicode
+= ((string
[4] & 0x3f) << 6);
3023 unicode
+= (string
[5] & 0x3f);
3026 die("Invalid unicode length");
3029 /* Invalid characters could return the special 0xfffd value but NUL
3030 * should be just as good. */
3031 return unicode
> 0xffff ?
0 : unicode
;
3034 /* Calculates how much of string can be shown within the given maximum width
3035 * and sets trimmed parameter to non-zero value if all of string could not be
3038 * Additionally, adds to coloffset how many many columns to move to align with
3039 * the expected position. Takes into account how multi-byte and double-width
3040 * characters will effect the cursor position.
3042 * Returns the number of bytes to output from string to satisfy max_width. */
3044 utf8_length(const char *string
, size_t max_width
, int *coloffset
, int *trimmed
)
3046 const char *start
= string
;
3047 const char *end
= strchr(string
, '\0');
3053 while (string
< end
) {
3054 int c
= *(unsigned char *) string
;
3055 unsigned char bytes
= utf8_bytes
[c
];
3057 unsigned long unicode
;
3059 if (string
+ bytes
> end
)
3062 /* Change representation to figure out whether
3063 * it is a single- or double-width character. */
3065 unicode
= utf8_to_unicode(string
, bytes
);
3066 /* FIXME: Graceful handling of invalid unicode character. */
3070 ucwidth
= unicode_width(unicode
);
3072 if (width
> max_width
) {
3077 /* The column offset collects the differences between the
3078 * number of bytes encoding a character and the number of
3079 * columns will be used for rendering said character.
3081 * So if some character A is encoded in 2 bytes, but will be
3082 * represented on the screen using only 1 byte this will and up
3083 * adding 1 to the multi-byte column offset.
3085 * Assumes that no double-width character can be encoding in
3086 * less than two bytes. */
3087 if (bytes
> ucwidth
)
3088 mbwidth
+= bytes
- ucwidth
;
3093 *coloffset
+= mbwidth
;
3095 return string
- start
;
3103 /* Whether or not the curses interface has been initialized. */
3104 static bool cursed
= FALSE
;
3106 /* The status window is used for polling keystrokes. */
3107 static WINDOW
*status_win
;
3109 /* Update status and title window. */
3111 report(const char *msg
, ...)
3113 static bool empty
= TRUE
;
3114 struct view
*view
= display
[current_view
];
3116 if (!empty
|| *msg
) {
3119 va_start(args
, msg
);
3122 wmove(status_win
, 0, 0);
3124 vwprintw(status_win
, msg
, args
);
3129 wrefresh(status_win
);
3134 update_view_title(view
);
3135 update_display_cursor();
3138 /* Controls when nodelay should be in effect when polling user input. */
3140 set_nonblocking_input(bool loading
)
3142 static unsigned int loading_views
;
3144 if ((loading
== FALSE
&& loading_views
-- == 1) ||
3145 (loading
== TRUE
&& loading_views
++ == 0))
3146 nodelay(status_win
, loading
);
3154 /* Initialize the curses library */
3155 if (isatty(STDIN_FILENO
)) {
3156 cursed
= !!initscr();
3158 /* Leave stdin and stdout alone when acting as a pager. */
3159 FILE *io
= fopen("/dev/tty", "r+");
3162 die("Failed to open /dev/tty");
3163 cursed
= !!newterm(NULL
, io
, io
);
3167 die("Failed to initialize curses");
3169 nonl(); /* Tell curses not to do NL->CR/NL on output */
3170 cbreak(); /* Take input chars one at a time, no wait for \n */
3171 noecho(); /* Don't echo input */
3172 leaveok(stdscr
, TRUE
);
3177 getmaxyx(stdscr
, y
, x
);
3178 status_win
= newwin(1, 0, y
- 1, 0);
3180 die("Failed to create status window");
3182 /* Enable keyboard mapping */
3183 keypad(status_win
, TRUE
);
3184 wbkgdset(status_win
, get_line_attr(LINE_STATUS
));
3188 read_prompt(const char *prompt
)
3190 enum { READING
, STOP
, CANCEL
} status
= READING
;
3191 static char buf
[sizeof(opt_cmd
) - STRING_SIZE("git \0")];
3194 while (status
== READING
) {
3198 foreach_view (view
, i
)
3201 report("%s%.*s", prompt
, pos
, buf
);
3202 /* Refresh, accept single keystroke of input */
3203 key
= wgetch(status_win
);
3208 status
= pos ? STOP
: CANCEL
;
3226 if (pos
>= sizeof(buf
)) {
3227 report("Input string too long");
3232 buf
[pos
++] = (char) key
;
3236 if (status
== CANCEL
) {
3237 /* Clear the status window */
3248 * Repository references
3251 static struct ref
*refs
;
3252 static size_t refs_size
;
3254 /* Id <-> ref store */
3255 static struct ref
***id_refs
;
3256 static size_t id_refs_size
;
3258 static struct ref
**
3261 struct ref
***tmp_id_refs
;
3262 struct ref
**ref_list
= NULL
;
3263 size_t ref_list_size
= 0;
3266 for (i
= 0; i
< id_refs_size
; i
++)
3267 if (!strcmp(id
, id_refs
[i
][0]->id
))
3270 tmp_id_refs
= realloc(id_refs
, (id_refs_size
+ 1) * sizeof(*id_refs
));
3274 id_refs
= tmp_id_refs
;
3276 for (i
= 0; i
< refs_size
; i
++) {
3279 if (strcmp(id
, refs
[i
].id
))
3282 tmp
= realloc(ref_list
, (ref_list_size
+ 1) * sizeof(*ref_list
));
3290 if (ref_list_size
> 0)
3291 ref_list
[ref_list_size
- 1]->next
= 1;
3292 ref_list
[ref_list_size
] = &refs
[i
];
3294 /* XXX: The properties of the commit chains ensures that we can
3295 * safely modify the shared ref. The repo references will
3296 * always be similar for the same id. */
3297 ref_list
[ref_list_size
]->next
= 0;
3302 id_refs
[id_refs_size
++] = ref_list
;
3308 read_ref(char *id
, int idlen
, char *name
, int namelen
)
3313 if (!strncmp(name
, "refs/tags/", STRING_SIZE("refs/tags/"))) {
3314 /* Commits referenced by tags has "^{}" appended. */
3315 if (name
[namelen
- 1] != '}')
3318 while (namelen
> 0 && name
[namelen
] != '^')
3322 namelen
-= STRING_SIZE("refs/tags/");
3323 name
+= STRING_SIZE("refs/tags/");
3325 } else if (!strncmp(name
, "refs/heads/", STRING_SIZE("refs/heads/"))) {
3326 namelen
-= STRING_SIZE("refs/heads/");
3327 name
+= STRING_SIZE("refs/heads/");
3329 } else if (!strcmp(name
, "HEAD")) {
3333 refs
= realloc(refs
, sizeof(*refs
) * (refs_size
+ 1));
3337 ref
= &refs
[refs_size
++];
3338 ref
->name
= malloc(namelen
+ 1);
3342 strncpy(ref
->name
, name
, namelen
);
3343 ref
->name
[namelen
] = 0;
3345 string_copy(ref
->id
, id
);
3353 const char *cmd_env
= getenv("TIG_LS_REMOTE");
3354 const char *cmd
= cmd_env
&& *cmd_env ? cmd_env
: TIG_LS_REMOTE
;
3356 return read_properties(popen(cmd
, "r"), "\t", read_ref
);
3360 read_repo_config_option(char *name
, int namelen
, char *value
, int valuelen
)
3362 if (!strcmp(name
, "i18n.commitencoding"))
3363 string_copy(opt_encoding
, value
);
3369 load_repo_config(void)
3371 return read_properties(popen("git repo-config --list", "r"),
3372 "=", read_repo_config_option
);
3376 read_properties(FILE *pipe
, const char *separators
,
3377 int (*read_property
)(char *, int, char *, int))
3379 char buffer
[BUFSIZ
];
3386 while (state
== OK
&& (name
= fgets(buffer
, sizeof(buffer
), pipe
))) {
3391 name
= chomp_string(name
);
3392 namelen
= strcspn(name
, separators
);
3394 if (name
[namelen
]) {
3396 value
= chomp_string(name
+ namelen
+ 1);
3397 valuelen
= strlen(value
);
3404 state
= read_property(name
, namelen
, value
, valuelen
);
3407 if (state
!= ERR
&& ferror(pipe
))
3420 static void __NORETURN
3423 /* XXX: Restore tty modes and let the OS cleanup the rest! */
3429 static void __NORETURN
3430 die(const char *err
, ...)
3436 va_start(args
, err
);
3437 fputs("tig: ", stderr
);
3438 vfprintf(stderr
, err
, args
);
3439 fputs("\n", stderr
);
3446 main(int argc
, char *argv
[])
3449 enum request request
;
3452 signal(SIGINT
, quit
);
3454 if (setlocale(LC_ALL
, "")) {
3455 string_copy(opt_codeset
, nl_langinfo(CODESET
));
3458 if (load_options() == ERR
)
3459 die("Failed to load user config.");
3461 /* Load the repo config file so options can be overwritten from
3462 * the command line. */
3463 if (load_repo_config() == ERR
)
3464 die("Failed to load repo config.");
3466 if (!parse_options(argc
, argv
))
3469 if (*opt_codeset
&& strcmp(opt_codeset
, opt_encoding
)) {
3470 opt_iconv
= iconv_open(opt_codeset
, opt_encoding
);
3471 if (opt_iconv
== ICONV_NONE
)
3472 die("Failed to initialize character set conversion");
3475 if (load_refs() == ERR
)
3476 die("Failed to load refs.");
3478 /* Require a git repository unless when running in pager mode. */
3479 if (refs_size
== 0 && opt_request
!= REQ_VIEW_PAGER
)
3480 die("Not a git repository");
3482 for (i
= 0; i
< ARRAY_SIZE(views
) && (view
= &views
[i
]); i
++)
3483 view
->cmd_env
= getenv(view
->cmd_env
);
3485 request
= opt_request
;
3489 while (view_driver(display
[current_view
], request
)) {
3493 foreach_view (view
, i
)
3496 /* Refresh, accept single keystroke of input */
3497 key
= wgetch(status_win
);
3499 request
= get_keybinding(display
[current_view
]->keymap
, key
);
3501 /* Some low-level request handling. This keeps access to
3502 * status_win restricted. */
3506 char *cmd
= read_prompt(":");
3508 if (cmd
&& string_format(opt_cmd
, "git %s", cmd
)) {
3509 if (strncmp(cmd
, "show", 4) && isspace(cmd
[4])) {
3510 opt_request
= REQ_VIEW_DIFF
;
3512 opt_request
= REQ_VIEW_PAGER
;
3521 case REQ_SEARCH_BACK
:
3523 const char *prompt
= request
== REQ_SEARCH
3525 char *search
= read_prompt(prompt
);
3528 string_copy(opt_search
, search
);
3533 case REQ_SCREEN_RESIZE
:
3537 getmaxyx(stdscr
, height
, width
);
3539 /* Resize the status view and let the view driver take
3540 * care of resizing the displayed views. */
3541 wresize(status_win
, 1, width
);
3542 mvwin(status_win
, height
- 1, 0);
3543 wrefresh(status_win
);