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(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
569 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
570 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
571 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
572 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
573 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
574 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
575 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
576 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
577 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
578 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
579 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
580 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
581 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL)
584 #define LINE(type, line, fg, bg, attr) \
591 const char *name
; /* Option name. */
592 int namelen
; /* Size of option name. */
593 const char *line
; /* The start of line to match. */
594 int linelen
; /* Size of string to match. */
595 int fg
, bg
, attr
; /* Color and text attributes for the lines. */
598 static struct line_info line_info
[] = {
599 #define LINE(type, line, fg, bg, attr) \
600 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
605 static enum line_type
606 get_line_type(char *line
)
608 int linelen
= strlen(line
);
611 for (type
= 0; type
< ARRAY_SIZE(line_info
); type
++)
612 /* Case insensitive search matches Signed-off-by lines better. */
613 if (linelen
>= line_info
[type
].linelen
&&
614 !strncasecmp(line_info
[type
].line
, line
, line_info
[type
].linelen
))
621 get_line_attr(enum line_type type
)
623 assert(type
< ARRAY_SIZE(line_info
));
624 return COLOR_PAIR(type
) | line_info
[type
].attr
;
627 static struct line_info
*
628 get_line_info(char *name
, int namelen
)
632 for (type
= 0; type
< ARRAY_SIZE(line_info
); type
++)
633 if (namelen
== line_info
[type
].namelen
&&
634 !string_enum_compare(line_info
[type
].name
, name
, namelen
))
635 return &line_info
[type
];
643 int default_bg
= COLOR_BLACK
;
644 int default_fg
= COLOR_WHITE
;
649 if (use_default_colors() != ERR
) {
654 for (type
= 0; type
< ARRAY_SIZE(line_info
); type
++) {
655 struct line_info
*info
= &line_info
[type
];
656 int bg
= info
->bg
== COLOR_DEFAULT ? default_bg
: info
->bg
;
657 int fg
= info
->fg
== COLOR_DEFAULT ? default_fg
: info
->fg
;
659 init_pair(type
, fg
, bg
);
667 unsigned int selected
:1;
669 void *data
; /* User data */
679 enum request request
;
680 struct keybinding
*next
;
683 static struct keybinding default_keybindings
[] = {
685 { 'm', REQ_VIEW_MAIN
},
686 { 'd', REQ_VIEW_DIFF
},
687 { 'l', REQ_VIEW_LOG
},
688 { 't', REQ_VIEW_TREE
},
689 { 'f', REQ_VIEW_BLOB
},
690 { 'p', REQ_VIEW_PAGER
},
691 { 'h', REQ_VIEW_HELP
},
693 /* View manipulation */
694 { 'q', REQ_VIEW_CLOSE
},
695 { KEY_TAB
, REQ_VIEW_NEXT
},
696 { KEY_RETURN
, REQ_ENTER
},
697 { KEY_UP
, REQ_PREVIOUS
},
698 { KEY_DOWN
, REQ_NEXT
},
700 /* Cursor navigation */
701 { 'k', REQ_MOVE_UP
},
702 { 'j', REQ_MOVE_DOWN
},
703 { KEY_HOME
, REQ_MOVE_FIRST_LINE
},
704 { KEY_END
, REQ_MOVE_LAST_LINE
},
705 { KEY_NPAGE
, REQ_MOVE_PAGE_DOWN
},
706 { ' ', REQ_MOVE_PAGE_DOWN
},
707 { KEY_PPAGE
, REQ_MOVE_PAGE_UP
},
708 { 'b', REQ_MOVE_PAGE_UP
},
709 { '-', REQ_MOVE_PAGE_UP
},
712 { KEY_IC
, REQ_SCROLL_LINE_UP
},
713 { KEY_DC
, REQ_SCROLL_LINE_DOWN
},
714 { 'w', REQ_SCROLL_PAGE_UP
},
715 { 's', REQ_SCROLL_PAGE_DOWN
},
719 { '?', REQ_SEARCH_BACK
},
720 { 'n', REQ_FIND_NEXT
},
721 { 'N', REQ_FIND_PREV
},
725 { 'z', REQ_STOP_LOADING
},
726 { 'v', REQ_SHOW_VERSION
},
727 { 'r', REQ_SCREEN_REDRAW
},
728 { '.', REQ_TOGGLE_LINENO
},
729 { 'g', REQ_TOGGLE_REV_GRAPH
},
732 /* wgetch() with nodelay() enabled returns ERR when there's no input. */
735 /* Using the ncurses SIGWINCH handler. */
736 { KEY_RESIZE
, REQ_SCREEN_RESIZE
},
739 #define KEYMAP_INFO \
750 #define KEYMAP_(name) KEYMAP_##name
755 static struct int_map keymap_table
[] = {
756 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
761 #define set_keymap(map, name) \
762 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
764 static struct keybinding
*keybindings
[ARRAY_SIZE(keymap_table
)];
767 add_keybinding(enum keymap keymap
, enum request request
, int key
)
769 struct keybinding
*keybinding
;
771 keybinding
= calloc(1, sizeof(*keybinding
));
773 die("Failed to allocate keybinding");
775 keybinding
->alias
= key
;
776 keybinding
->request
= request
;
777 keybinding
->next
= keybindings
[keymap
];
778 keybindings
[keymap
] = keybinding
;
781 /* Looks for a key binding first in the given map, then in the generic map, and
782 * lastly in the default keybindings. */
784 get_keybinding(enum keymap keymap
, int key
)
786 struct keybinding
*kbd
;
789 for (kbd
= keybindings
[keymap
]; kbd
; kbd
= kbd
->next
)
790 if (kbd
->alias
== key
)
793 for (kbd
= keybindings
[KEYMAP_GENERIC
]; kbd
; kbd
= kbd
->next
)
794 if (kbd
->alias
== key
)
797 for (i
= 0; i
< ARRAY_SIZE(default_keybindings
); i
++)
798 if (default_keybindings
[i
].alias
== key
)
799 return default_keybindings
[i
].request
;
801 return (enum request
) key
;
810 static struct key key_table
[] = {
811 { "Enter", KEY_RETURN
},
813 { "Backspace", KEY_BACKSPACE
},
815 { "Escape", KEY_ESC
},
816 { "Left", KEY_LEFT
},
817 { "Right", KEY_RIGHT
},
819 { "Down", KEY_DOWN
},
820 { "Insert", KEY_IC
},
821 { "Delete", KEY_DC
},
823 { "Home", KEY_HOME
},
825 { "PageUp", KEY_PPAGE
},
826 { "PageDown", KEY_NPAGE
},
836 { "F10", KEY_F(10) },
837 { "F11", KEY_F(11) },
838 { "F12", KEY_F(12) },
842 get_key_value(const char *name
)
846 for (i
= 0; i
< ARRAY_SIZE(key_table
); i
++)
847 if (!strcasecmp(key_table
[i
].name
, name
))
848 return key_table
[i
].value
;
850 if (strlen(name
) == 1 && isprint(*name
))
857 get_key(enum request request
)
859 static char buf
[BUFSIZ
];
860 static char key_char
[] = "'X'";
867 for (i
= 0; i
< ARRAY_SIZE(default_keybindings
); i
++) {
868 struct keybinding
*keybinding
= &default_keybindings
[i
];
872 if (keybinding
->request
!= request
)
875 for (key
= 0; key
< ARRAY_SIZE(key_table
); key
++)
876 if (key_table
[key
].value
== keybinding
->alias
)
877 seq
= key_table
[key
].name
;
880 keybinding
->alias
< 127 &&
881 isprint(keybinding
->alias
)) {
882 key_char
[1] = (char) keybinding
->alias
;
889 if (!string_format_from(buf
, &pos
, "%s%s", sep
, seq
))
890 return "Too many keybindings!";
899 * User config file handling.
902 static struct int_map color_map
[] = {
903 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
915 #define set_color(color, name) \
916 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
918 static struct int_map attr_map
[] = {
919 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
929 #define set_attribute(attr, name) \
930 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
932 static int config_lineno
;
933 static bool config_errors
;
934 static char *config_msg
;
936 /* Wants: object fgcolor bgcolor [attr] */
938 option_color_command(int argc
, char *argv
[])
940 struct line_info
*info
;
942 if (argc
!= 3 && argc
!= 4) {
943 config_msg
= "Wrong number of arguments given to color command";
947 info
= get_line_info(argv
[0], strlen(argv
[0]));
949 config_msg
= "Unknown color name";
953 if (set_color(&info
->fg
, argv
[1]) == ERR
||
954 set_color(&info
->bg
, argv
[2]) == ERR
) {
955 config_msg
= "Unknown color";
959 if (argc
== 4 && set_attribute(&info
->attr
, argv
[3]) == ERR
) {
960 config_msg
= "Unknown attribute";
967 /* Wants: name = value */
969 option_set_command(int argc
, char *argv
[])
972 config_msg
= "Wrong number of arguments given to set command";
976 if (strcmp(argv
[1], "=")) {
977 config_msg
= "No value assigned";
981 if (!strcmp(argv
[0], "show-rev-graph")) {
982 opt_rev_graph
= (!strcmp(argv
[2], "1") ||
983 !strcmp(argv
[2], "true") ||
984 !strcmp(argv
[2], "yes"));
988 if (!strcmp(argv
[0], "line-number-interval")) {
989 opt_num_interval
= atoi(argv
[2]);
993 if (!strcmp(argv
[0], "tab-size")) {
994 opt_tab_size
= atoi(argv
[2]);
998 if (!strcmp(argv
[0], "commit-encoding")) {
1000 int delimiter
= *arg
;
1003 switch (delimiter
) {
1006 for (arg
++, i
= 0; arg
[i
]; i
++)
1007 if (arg
[i
] == delimiter
) {
1012 string_copy(opt_encoding
, arg
);
1017 config_msg
= "Unknown variable name";
1021 /* Wants: mode request key */
1023 option_bind_command(int argc
, char *argv
[])
1025 enum request request
;
1030 config_msg
= "Wrong number of arguments given to bind command";
1034 if (set_keymap(&keymap
, argv
[0]) == ERR
) {
1035 config_msg
= "Unknown key map";
1039 key
= get_key_value(argv
[1]);
1041 config_msg
= "Unknown key";
1045 request
= get_request(argv
[2]);
1046 if (request
== REQ_UNKNOWN
) {
1047 config_msg
= "Unknown request name";
1051 add_keybinding(keymap
, request
, key
);
1057 set_option(char *opt
, char *value
)
1064 while (argc
< ARRAY_SIZE(argv
) && (valuelen
= strcspn(value
, " \t"))) {
1065 argv
[argc
++] = value
;
1072 while (isspace(*value
))
1076 if (!strcmp(opt
, "color"))
1077 return option_color_command(argc
, argv
);
1079 if (!strcmp(opt
, "set"))
1080 return option_set_command(argc
, argv
);
1082 if (!strcmp(opt
, "bind"))
1083 return option_bind_command(argc
, argv
);
1085 config_msg
= "Unknown option command";
1090 read_option(char *opt
, int optlen
, char *value
, int valuelen
)
1095 config_msg
= "Internal error";
1097 /* Check for comment markers, since read_properties() will
1098 * only ensure opt and value are split at first " \t". */
1099 optlen
= strcspn(opt
, "#");
1103 if (opt
[optlen
] != 0) {
1104 config_msg
= "No option value";
1108 /* Look for comment endings in the value. */
1109 int len
= strcspn(value
, "#");
1111 if (len
< valuelen
) {
1113 value
[valuelen
] = 0;
1116 status
= set_option(opt
, value
);
1119 if (status
== ERR
) {
1120 fprintf(stderr
, "Error on line %d, near '%.*s': %s\n",
1121 config_lineno
, optlen
, opt
, config_msg
);
1122 config_errors
= TRUE
;
1125 /* Always keep going if errors are encountered. */
1132 char *home
= getenv("HOME");
1133 char buf
[SIZEOF_STR
];
1137 config_errors
= FALSE
;
1139 if (!home
|| !string_format(buf
, "%s/.tigrc", home
))
1142 /* It's ok that the file doesn't exist. */
1143 file
= fopen(buf
, "r");
1147 if (read_properties(file
, " \t", read_option
) == ERR
||
1148 config_errors
== TRUE
)
1149 fprintf(stderr
, "Errors while loading %s.\n", buf
);
1162 /* The display array of active views and the index of the current view. */
1163 static struct view
*display
[2];
1164 static unsigned int current_view
;
1166 #define foreach_displayed_view(view, i) \
1167 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1169 #define displayed_views() (display[1] != NULL ? 2 : 1)
1171 /* Current head and commit ID */
1172 static char ref_blob
[SIZEOF_REF
] = "";
1173 static char ref_commit
[SIZEOF_REF
] = "HEAD";
1174 static char ref_head
[SIZEOF_REF
] = "HEAD";
1177 const char *name
; /* View name */
1178 const char *cmd_fmt
; /* Default command line format */
1179 const char *cmd_env
; /* Command line set via environment */
1180 const char *id
; /* Points to either of ref_{head,commit,blob} */
1182 struct view_ops
*ops
; /* View operations */
1184 enum keymap keymap
; /* What keymap does this view have */
1186 char cmd
[SIZEOF_STR
]; /* Command buffer */
1187 char ref
[SIZEOF_REF
]; /* Hovered commit reference */
1188 char vid
[SIZEOF_REF
]; /* View ID. Set to id member when updating. */
1190 int height
, width
; /* The width and height of the main window */
1191 WINDOW
*win
; /* The main window */
1192 WINDOW
*title
; /* The title window living below the main window */
1195 unsigned long offset
; /* Offset of the window top */
1196 unsigned long lineno
; /* Current line number */
1199 char grep
[SIZEOF_STR
]; /* Search string */
1200 regex_t
*regex
; /* Pre-compiled regex */
1202 /* If non-NULL, points to the view that opened this view. If this view
1203 * is closed tig will switch back to the parent view. */
1204 struct view
*parent
;
1207 unsigned long lines
; /* Total number of lines */
1208 struct line
*line
; /* Line index */
1209 unsigned long line_size
;/* Total number of allocated lines */
1210 unsigned int digits
; /* Number of digits in the lines member. */
1218 /* What type of content being displayed. Used in the title bar. */
1220 /* Draw one line; @lineno must be < view->height. */
1221 bool (*draw
)(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
);
1222 /* Read one line; updates view->line. */
1223 bool (*read
)(struct view
*view
, char *data
);
1224 /* Depending on view, change display based on current line. */
1225 bool (*enter
)(struct view
*view
, struct line
*line
);
1226 /* Search for regex in a line. */
1227 bool (*grep
)(struct view
*view
, struct line
*line
);
1229 void (*select
)(struct view
*view
, struct line
*line
);
1232 static struct view_ops pager_ops
;
1233 static struct view_ops main_ops
;
1234 static struct view_ops tree_ops
;
1235 static struct view_ops blob_ops
;
1237 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1238 { name, cmd, #env, ref, ops, map}
1240 #define VIEW_(id, name, ops, ref) \
1241 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1244 static struct view views
[] = {
1245 VIEW_(MAIN
, "main", &main_ops
, ref_head
),
1246 VIEW_(DIFF
, "diff", &pager_ops
, ref_commit
),
1247 VIEW_(LOG
, "log", &pager_ops
, ref_head
),
1248 VIEW_(TREE
, "tree", &tree_ops
, ref_commit
),
1249 VIEW_(BLOB
, "blob", &blob_ops
, ref_blob
),
1250 VIEW_(HELP
, "help", &pager_ops
, "static"),
1251 VIEW_(PAGER
, "pager", &pager_ops
, "static"),
1254 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1256 #define foreach_view(view, i) \
1257 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1259 #define view_is_displayed(view) \
1260 (view == display[0] || view == display[1])
1263 draw_view_line(struct view
*view
, unsigned int lineno
)
1266 bool selected
= (view
->offset
+ lineno
== view
->lineno
);
1268 assert(view_is_displayed(view
));
1270 if (view
->offset
+ lineno
>= view
->lines
)
1273 line
= &view
->line
[view
->offset
+ lineno
];
1276 line
->selected
= TRUE
;
1277 view
->ops
->select(view
, line
);
1278 } else if (line
->selected
) {
1279 line
->selected
= FALSE
;
1280 wmove(view
->win
, lineno
, 0);
1281 wclrtoeol(view
->win
);
1284 return view
->ops
->draw(view
, line
, lineno
, selected
);
1288 redraw_view_from(struct view
*view
, int lineno
)
1290 assert(0 <= lineno
&& lineno
< view
->height
);
1292 for (; lineno
< view
->height
; lineno
++) {
1293 if (!draw_view_line(view
, lineno
))
1297 redrawwin(view
->win
);
1298 wrefresh(view
->win
);
1302 redraw_view(struct view
*view
)
1305 redraw_view_from(view
, 0);
1310 update_view_title(struct view
*view
)
1312 assert(view_is_displayed(view
));
1314 if (view
== display
[current_view
])
1315 wbkgdset(view
->title
, get_line_attr(LINE_TITLE_FOCUS
));
1317 wbkgdset(view
->title
, get_line_attr(LINE_TITLE_BLUR
));
1319 werase(view
->title
);
1320 wmove(view
->title
, 0, 0);
1323 wprintw(view
->title
, "[%s] %s", view
->name
, view
->ref
);
1325 wprintw(view
->title
, "[%s]", view
->name
);
1327 if (view
->lines
|| view
->pipe
) {
1328 unsigned int view_lines
= view
->offset
+ view
->height
;
1329 unsigned int lines
= view
->lines
1330 ?
MIN(view_lines
, view
->lines
) * 100 / view
->lines
1333 wprintw(view
->title
, " - %s %d of %d (%d%%)",
1341 time_t secs
= time(NULL
) - view
->start_time
;
1343 /* Three git seconds are a long time ... */
1345 wprintw(view
->title
, " %lds", secs
);
1348 wmove(view
->title
, 0, view
->width
- 1);
1349 wrefresh(view
->title
);
1353 resize_display(void)
1356 struct view
*base
= display
[0];
1357 struct view
*view
= display
[1] ? display
[1] : display
[0];
1359 /* Setup window dimensions */
1361 getmaxyx(stdscr
, base
->height
, base
->width
);
1363 /* Make room for the status window. */
1367 /* Horizontal split. */
1368 view
->width
= base
->width
;
1369 view
->height
= SCALE_SPLIT_VIEW(base
->height
);
1370 base
->height
-= view
->height
;
1372 /* Make room for the title bar. */
1376 /* Make room for the title bar. */
1381 foreach_displayed_view (view
, i
) {
1383 view
->win
= newwin(view
->height
, 0, offset
, 0);
1385 die("Failed to create %s view", view
->name
);
1387 scrollok(view
->win
, TRUE
);
1389 view
->title
= newwin(1, 0, offset
+ view
->height
, 0);
1391 die("Failed to create title window");
1394 wresize(view
->win
, view
->height
, view
->width
);
1395 mvwin(view
->win
, offset
, 0);
1396 mvwin(view
->title
, offset
+ view
->height
, 0);
1399 offset
+= view
->height
+ 1;
1404 redraw_display(void)
1409 foreach_displayed_view (view
, i
) {
1411 update_view_title(view
);
1416 update_display_cursor(void)
1418 struct view
*view
= display
[current_view
];
1420 /* Move the cursor to the right-most column of the cursor line.
1422 * XXX: This could turn out to be a bit expensive, but it ensures that
1423 * the cursor does not jump around. */
1425 wmove(view
->win
, view
->lineno
- view
->offset
, view
->width
- 1);
1426 wrefresh(view
->win
);
1434 /* Scrolling backend */
1436 do_scroll_view(struct view
*view
, int lines
)
1438 bool redraw_current_line
= FALSE
;
1440 /* The rendering expects the new offset. */
1441 view
->offset
+= lines
;
1443 assert(0 <= view
->offset
&& view
->offset
< view
->lines
);
1446 /* Move current line into the view. */
1447 if (view
->lineno
< view
->offset
) {
1448 view
->lineno
= view
->offset
;
1449 redraw_current_line
= TRUE
;
1450 } else if (view
->lineno
>= view
->offset
+ view
->height
) {
1451 view
->lineno
= view
->offset
+ view
->height
- 1;
1452 redraw_current_line
= TRUE
;
1455 assert(view
->offset
<= view
->lineno
&& view
->lineno
< view
->lines
);
1457 /* Redraw the whole screen if scrolling is pointless. */
1458 if (view
->height
< ABS(lines
)) {
1462 int line
= lines
> 0 ? view
->height
- lines
: 0;
1463 int end
= line
+ ABS(lines
);
1465 wscrl(view
->win
, lines
);
1467 for (; line
< end
; line
++) {
1468 if (!draw_view_line(view
, line
))
1472 if (redraw_current_line
)
1473 draw_view_line(view
, view
->lineno
- view
->offset
);
1476 redrawwin(view
->win
);
1477 wrefresh(view
->win
);
1481 /* Scroll frontend */
1483 scroll_view(struct view
*view
, enum request request
)
1487 assert(view_is_displayed(view
));
1490 case REQ_SCROLL_PAGE_DOWN
:
1491 lines
= view
->height
;
1492 case REQ_SCROLL_LINE_DOWN
:
1493 if (view
->offset
+ lines
> view
->lines
)
1494 lines
= view
->lines
- view
->offset
;
1496 if (lines
== 0 || view
->offset
+ view
->height
>= view
->lines
) {
1497 report("Cannot scroll beyond the last line");
1502 case REQ_SCROLL_PAGE_UP
:
1503 lines
= view
->height
;
1504 case REQ_SCROLL_LINE_UP
:
1505 if (lines
> view
->offset
)
1506 lines
= view
->offset
;
1509 report("Cannot scroll beyond the first line");
1517 die("request %d not handled in switch", request
);
1520 do_scroll_view(view
, lines
);
1525 move_view(struct view
*view
, enum request request
)
1527 int scroll_steps
= 0;
1531 case REQ_MOVE_FIRST_LINE
:
1532 steps
= -view
->lineno
;
1535 case REQ_MOVE_LAST_LINE
:
1536 steps
= view
->lines
- view
->lineno
- 1;
1539 case REQ_MOVE_PAGE_UP
:
1540 steps
= view
->height
> view
->lineno
1541 ?
-view
->lineno
: -view
->height
;
1544 case REQ_MOVE_PAGE_DOWN
:
1545 steps
= view
->lineno
+ view
->height
>= view
->lines
1546 ? view
->lines
- view
->lineno
- 1 : view
->height
;
1558 die("request %d not handled in switch", request
);
1561 if (steps
<= 0 && view
->lineno
== 0) {
1562 report("Cannot move beyond the first line");
1565 } else if (steps
>= 0 && view
->lineno
+ 1 >= view
->lines
) {
1566 report("Cannot move beyond the last line");
1570 /* Move the current line */
1571 view
->lineno
+= steps
;
1572 assert(0 <= view
->lineno
&& view
->lineno
< view
->lines
);
1574 /* Check whether the view needs to be scrolled */
1575 if (view
->lineno
< view
->offset
||
1576 view
->lineno
>= view
->offset
+ view
->height
) {
1577 scroll_steps
= steps
;
1578 if (steps
< 0 && -steps
> view
->offset
) {
1579 scroll_steps
= -view
->offset
;
1581 } else if (steps
> 0) {
1582 if (view
->lineno
== view
->lines
- 1 &&
1583 view
->lines
> view
->height
) {
1584 scroll_steps
= view
->lines
- view
->offset
- 1;
1585 if (scroll_steps
>= view
->height
)
1586 scroll_steps
-= view
->height
- 1;
1591 if (!view_is_displayed(view
)) {
1592 view
->offset
+= steps
;
1593 view
->ops
->select(view
, &view
->line
[view
->lineno
]);
1597 /* Repaint the old "current" line if we be scrolling */
1598 if (ABS(steps
) < view
->height
)
1599 draw_view_line(view
, view
->lineno
- steps
- view
->offset
);
1602 do_scroll_view(view
, scroll_steps
);
1606 /* Draw the current line */
1607 draw_view_line(view
, view
->lineno
- view
->offset
);
1609 redrawwin(view
->win
);
1610 wrefresh(view
->win
);
1619 static void search_view(struct view
*view
, enum request request
);
1622 find_next_line(struct view
*view
, unsigned long lineno
, struct line
*line
)
1624 assert(view_is_displayed(view
));
1626 if (!view
->ops
->grep(view
, line
))
1629 if (lineno
- view
->offset
>= view
->height
) {
1630 view
->offset
= lineno
;
1631 view
->lineno
= lineno
;
1635 unsigned long old_lineno
= view
->lineno
- view
->offset
;
1637 view
->lineno
= lineno
;
1638 draw_view_line(view
, old_lineno
);
1640 draw_view_line(view
, view
->lineno
- view
->offset
);
1641 redrawwin(view
->win
);
1642 wrefresh(view
->win
);
1645 report("Line %ld matches '%s'", lineno
+ 1, view
->grep
);
1650 find_next(struct view
*view
, enum request request
)
1652 unsigned long lineno
= view
->lineno
;
1657 report("No previous search");
1659 search_view(view
, request
);
1669 case REQ_SEARCH_BACK
:
1678 if (request
== REQ_FIND_NEXT
|| request
== REQ_FIND_PREV
)
1679 lineno
+= direction
;
1681 /* Note, lineno is unsigned long so will wrap around in which case it
1682 * will become bigger than view->lines. */
1683 for (; lineno
< view
->lines
; lineno
+= direction
) {
1684 struct line
*line
= &view
->line
[lineno
];
1686 if (find_next_line(view
, lineno
, line
))
1690 report("No match found for '%s'", view
->grep
);
1694 search_view(struct view
*view
, enum request request
)
1699 regfree(view
->regex
);
1702 view
->regex
= calloc(1, sizeof(*view
->regex
));
1707 regex_err
= regcomp(view
->regex
, opt_search
, REG_EXTENDED
);
1708 if (regex_err
!= 0) {
1709 char buf
[SIZEOF_STR
] = "unknown error";
1711 regerror(regex_err
, view
->regex
, buf
, sizeof(buf
));
1712 report("Search failed: %s", buf
);
1716 string_copy(view
->grep
, opt_search
);
1718 find_next(view
, request
);
1722 * Incremental updating
1726 end_update(struct view
*view
)
1730 set_nonblocking_input(FALSE
);
1731 if (view
->pipe
== stdin
)
1739 begin_update(struct view
*view
)
1741 const char *id
= view
->id
;
1747 string_copy(view
->cmd
, opt_cmd
);
1749 /* When running random commands, the view ref could have become
1750 * invalid so clear it. */
1753 } else if (view
== VIEW(REQ_VIEW_TREE
)) {
1754 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1756 if (strcmp(view
->vid
, view
->id
))
1759 if (!string_format(view
->cmd
, format
, id
, opt_path
))
1763 const char *format
= view
->cmd_env ? view
->cmd_env
: view
->cmd_fmt
;
1765 if (!string_format(view
->cmd
, format
, id
, id
, id
, id
, id
))
1769 /* Special case for the pager view. */
1771 view
->pipe
= opt_pipe
;
1774 view
->pipe
= popen(view
->cmd
, "r");
1780 set_nonblocking_input(TRUE
);
1785 string_copy(view
->vid
, id
);
1790 for (i
= 0; i
< view
->lines
; i
++)
1791 if (view
->line
[i
].data
)
1792 free(view
->line
[i
].data
);
1798 view
->start_time
= time(NULL
);
1803 static struct line
*
1804 realloc_lines(struct view
*view
, size_t line_size
)
1806 struct line
*tmp
= realloc(view
->line
, sizeof(*view
->line
) * line_size
);
1812 view
->line_size
= line_size
;
1817 update_view(struct view
*view
)
1819 char in_buffer
[BUFSIZ
];
1820 char out_buffer
[BUFSIZ
* 2];
1822 /* The number of lines to read. If too low it will cause too much
1823 * redrawing (and possible flickering), if too high responsiveness
1825 unsigned long lines
= view
->height
;
1826 int redraw_from
= -1;
1831 /* Only redraw if lines are visible. */
1832 if (view
->offset
+ view
->height
>= view
->lines
)
1833 redraw_from
= view
->lines
- view
->offset
;
1835 /* FIXME: This is probably not perfect for backgrounded views. */
1836 if (!realloc_lines(view
, view
->lines
+ lines
))
1839 while ((line
= fgets(in_buffer
, sizeof(in_buffer
), view
->pipe
))) {
1840 size_t linelen
= strlen(line
);
1843 line
[linelen
- 1] = 0;
1845 if (opt_iconv
!= ICONV_NONE
) {
1847 size_t inlen
= linelen
;
1849 char *outbuf
= out_buffer
;
1850 size_t outlen
= sizeof(out_buffer
);
1854 ret
= iconv(opt_iconv
, &inbuf
, &inlen
, &outbuf
, &outlen
);
1855 if (ret
!= (size_t) -1) {
1857 linelen
= strlen(out_buffer
);
1861 if (!view
->ops
->read(view
, line
))
1871 lines
= view
->lines
;
1872 for (digits
= 0; lines
; digits
++)
1875 /* Keep the displayed view in sync with line number scaling. */
1876 if (digits
!= view
->digits
) {
1877 view
->digits
= digits
;
1882 if (!view_is_displayed(view
))
1885 if (view
== VIEW(REQ_VIEW_TREE
)) {
1886 /* Clear the view and redraw everything since the tree sorting
1887 * might have rearranged things. */
1890 } else if (redraw_from
>= 0) {
1891 /* If this is an incremental update, redraw the previous line
1892 * since for commits some members could have changed when
1893 * loading the main view. */
1894 if (redraw_from
> 0)
1897 /* Incrementally draw avoids flickering. */
1898 redraw_view_from(view
, redraw_from
);
1901 /* Update the title _after_ the redraw so that if the redraw picks up a
1902 * commit reference in view->ref it'll be available here. */
1903 update_view_title(view
);
1906 if (ferror(view
->pipe
)) {
1907 report("Failed to read: %s", strerror(errno
));
1910 } else if (feof(view
->pipe
)) {
1918 report("Allocation failure");
1930 static void open_help_view(struct view
*view
)
1933 int lines
= ARRAY_SIZE(req_info
) + 2;
1936 if (view
->lines
> 0)
1939 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++)
1940 if (!req_info
[i
].request
)
1943 view
->line
= calloc(lines
, sizeof(*view
->line
));
1945 report("Allocation failure");
1949 view
->ops
->read(view
, "Quick reference for tig keybindings:");
1951 for (i
= 0; i
< ARRAY_SIZE(req_info
); i
++) {
1954 if (!req_info
[i
].request
) {
1955 view
->ops
->read(view
, "");
1956 view
->ops
->read(view
, req_info
[i
].help
);
1960 key
= get_key(req_info
[i
].request
);
1961 if (!string_format(buf
, "%-25s %s", key
, req_info
[i
].help
))
1964 view
->ops
->read(view
, buf
);
1969 OPEN_DEFAULT
= 0, /* Use default view switching. */
1970 OPEN_SPLIT
= 1, /* Split current view. */
1971 OPEN_BACKGROUNDED
= 2, /* Backgrounded. */
1972 OPEN_RELOAD
= 4, /* Reload view even if it is the current. */
1976 open_view(struct view
*prev
, enum request request
, enum open_flags flags
)
1978 bool backgrounded
= !!(flags
& OPEN_BACKGROUNDED
);
1979 bool split
= !!(flags
& OPEN_SPLIT
);
1980 bool reload
= !!(flags
& OPEN_RELOAD
);
1981 struct view
*view
= VIEW(request
);
1982 int nviews
= displayed_views();
1983 struct view
*base_view
= display
[0];
1985 if (view
== prev
&& nviews
== 1 && !reload
) {
1986 report("Already in %s view", view
->name
);
1990 if (view
== VIEW(REQ_VIEW_HELP
)) {
1991 open_help_view(view
);
1993 } else if ((reload
|| strcmp(view
->vid
, view
->id
)) &&
1994 !begin_update(view
)) {
1995 report("Failed to load %s view", view
->name
);
2004 /* Maximize the current view. */
2005 memset(display
, 0, sizeof(display
));
2007 display
[current_view
] = view
;
2010 /* Resize the view when switching between split- and full-screen,
2011 * or when switching between two different full-screen views. */
2012 if (nviews
!= displayed_views() ||
2013 (nviews
== 1 && base_view
!= display
[0]))
2016 if (split
&& prev
->lineno
- prev
->offset
>= prev
->height
) {
2017 /* Take the title line into account. */
2018 int lines
= prev
->lineno
- prev
->offset
- prev
->height
+ 1;
2020 /* Scroll the view that was split if the current line is
2021 * outside the new limited view. */
2022 do_scroll_view(prev
, lines
);
2025 if (prev
&& view
!= prev
) {
2026 if (split
&& !backgrounded
) {
2027 /* "Blur" the previous view. */
2028 update_view_title(prev
);
2031 view
->parent
= prev
;
2034 if (view
->pipe
&& view
->lines
== 0) {
2035 /* Clear the old view and let the incremental updating refill
2044 /* If the view is backgrounded the above calls to report()
2045 * won't redraw the view title. */
2047 update_view_title(view
);
2052 * User request switch noodle
2056 view_driver(struct view
*view
, enum request request
)
2063 case REQ_MOVE_PAGE_UP
:
2064 case REQ_MOVE_PAGE_DOWN
:
2065 case REQ_MOVE_FIRST_LINE
:
2066 case REQ_MOVE_LAST_LINE
:
2067 move_view(view
, request
);
2070 case REQ_SCROLL_LINE_DOWN
:
2071 case REQ_SCROLL_LINE_UP
:
2072 case REQ_SCROLL_PAGE_DOWN
:
2073 case REQ_SCROLL_PAGE_UP
:
2074 scroll_view(view
, request
);
2079 report("No file chosen, press 't' to open tree view");
2088 case REQ_VIEW_PAGER
:
2089 open_view(view
, request
, OPEN_DEFAULT
);
2094 request
= request
== REQ_NEXT ? REQ_MOVE_DOWN
: REQ_MOVE_UP
;
2096 if ((view
== VIEW(REQ_VIEW_DIFF
) &&
2097 view
->parent
== VIEW(REQ_VIEW_MAIN
)) ||
2098 (view
== VIEW(REQ_VIEW_BLOB
) &&
2099 view
->parent
== VIEW(REQ_VIEW_TREE
))) {
2100 view
= view
->parent
;
2101 move_view(view
, request
);
2102 if (view_is_displayed(view
))
2103 update_view_title(view
);
2105 move_view(view
, request
);
2112 report("Nothing to enter");
2115 return view
->ops
->enter(view
, &view
->line
[view
->lineno
]);
2119 int nviews
= displayed_views();
2120 int next_view
= (current_view
+ 1) % nviews
;
2122 if (next_view
== current_view
) {
2123 report("Only one view is displayed");
2127 current_view
= next_view
;
2128 /* Blur out the title of the previous view. */
2129 update_view_title(view
);
2133 case REQ_TOGGLE_LINENO
:
2134 opt_line_number
= !opt_line_number
;
2138 case REQ_TOGGLE_REV_GRAPH
:
2139 opt_rev_graph
= !opt_rev_graph
;
2144 /* Always reload^Wrerun commands from the prompt. */
2145 open_view(view
, opt_request
, OPEN_RELOAD
);
2149 case REQ_SEARCH_BACK
:
2150 search_view(view
, request
);
2155 find_next(view
, request
);
2158 case REQ_STOP_LOADING
:
2159 for (i
= 0; i
< ARRAY_SIZE(views
); i
++) {
2162 report("Stopped loading the %s view", view
->name
),
2167 case REQ_SHOW_VERSION
:
2168 report("%s (built %s)", VERSION
, __DATE__
);
2171 case REQ_SCREEN_RESIZE
:
2174 case REQ_SCREEN_REDRAW
:
2182 case REQ_VIEW_CLOSE
:
2183 /* XXX: Mark closed views by letting view->parent point to the
2184 * view itself. Parents to closed view should never be
2187 view
->parent
->parent
!= view
->parent
) {
2188 memset(display
, 0, sizeof(display
));
2190 display
[current_view
] = view
->parent
;
2191 view
->parent
= view
;
2201 /* An unknown key will show most commonly used commands. */
2202 report("Unknown key, press 'h' for help");
2215 pager_draw(struct view
*view
, struct line
*line
, unsigned int lineno
, bool selected
)
2217 char *text
= line
->data
;
2218 enum line_type type
= line
->type
;
2219 int textlen
= strlen(text
);
2222 wmove(view
->win
, lineno
, 0);
2226 wchgat(view
->win
, -1, 0, type
, NULL
);
2229 attr
= get_line_attr(type
);
2230 wattrset(view
->win
, attr
);
2232 if (opt_line_number
|| opt_tab_size
< TABSIZE
) {
2233 static char spaces
[] = " ";
2234 int col_offset
= 0, col
= 0;
2236 if (opt_line_number
) {
2237 unsigned long real_lineno
= view
->offset
+ lineno
+ 1;
2239 if (real_lineno
== 1 ||
2240 (real_lineno
% opt_num_interval
) == 0) {
2241 wprintw(view
->win
, "%.*d", view
->digits
, real_lineno
);
2244 waddnstr(view
->win
, spaces
,
2245 MIN(view
->digits
, STRING_SIZE(spaces
)));
2247 waddstr(view
->win
, ": ");
2248 col_offset
= view
->digits
+ 2;
2251 while (text
&& col_offset
+ col
< view
->width
) {
2252 int cols_max
= view
->width
- col_offset
- col
;
2256 if (*text
== '\t') {
2258 assert(sizeof(spaces
) > TABSIZE
);
2260 cols
= opt_tab_size
- (col
% opt_tab_size
);
2263 text
= strchr(text
, '\t');
2264 cols
= line ? text
- pos
: strlen(pos
);
2267 waddnstr(view
->win
, pos
, MIN(cols
, cols_max
));
2272 int col
= 0, pos
= 0;
2274 for (; pos
< textlen
&& col
< view
->width
; pos
++, col
++)
2275 if (text
[pos
] == '\t')
2276 col
+= TABSIZE
- (col
% TABSIZE
) - 1;
2278 waddnstr(view
->win
, text
, pos
);
2285 add_describe_ref(char *buf
, size_t *bufpos
, char *commit_id
, const char *sep
)
2287 char refbuf
[SIZEOF_STR
];
2291 if (!string_format(refbuf
, "git describe %s", commit_id
))
2294 pipe
= popen(refbuf
, "r");
2298 if ((ref
= fgets(refbuf
, sizeof(refbuf
), pipe
)))
2299 ref
= chomp_string(ref
);
2305 /* This is the only fatal call, since it can "corrupt" the buffer. */
2306 if (!string_nformat(buf
, SIZEOF_STR
, bufpos
, "%s%s", sep
, ref
))
2313 add_pager_refs(struct view
*view
, struct line
*line
)
2315 char buf
[SIZEOF_STR
];
2316 char *commit_id
= line
->data
+ STRING_SIZE("commit ");
2318 size_t bufpos
= 0, refpos
= 0;
2319 const char *sep
= "Refs: ";
2320 bool is_tag
= FALSE
;
2322 assert(line
->type
== LINE_COMMIT
);
2324 refs
= get_refs(commit_id
);
2326 if (view
== VIEW(REQ_VIEW_DIFF
))
2327 goto try_add_describe_ref
;
2332 struct ref
*ref
= refs
[refpos
];
2333 char *fmt
= ref
->tag ?
"%s[%s]" : "%s%s";
2335 if (!string_format_from(buf
, &bufpos
, fmt
, sep
, ref
->name
))
2340 } while (refs
[refpos
++]->next
);
2342 if (!is_tag
&& view
== VIEW(REQ_VIEW_DIFF
)) {
2343 try_add_describe_ref
:
2344 /* Add <tag>-g<commit_id> "fake" reference. */
2345 if (!add_describe_ref(buf
, &bufpos
, commit_id
, sep
))
2352 if (!realloc_lines(view
, view
->line_size
+ 1))
2355 line
= &view
->line
[view
->lines
];
2356 line
->data
= strdup(buf
);
2360 line
->type
= LINE_PP_REFS
;
2365 pager_read(struct view
*view
, char *data
)
2367 struct line
*line
= &view
->line
[view
->lines
];
2369 line
->data
= strdup(data
);
2373 line
->type
= get_line_type(line
->data
);
2376 if (line
->type
== LINE_COMMIT
&&
2377 (view
== VIEW(REQ_VIEW_DIFF
) ||
2378 view
== VIEW(REQ_VIEW_LOG
)))
2379 add_pager_refs(view
, line
);
2385 pager_enter(struct view
*view
, struct line
*line
)
2389 if (line
->type
== LINE_COMMIT
&&
2390 (view
== VIEW(REQ_VIEW_LOG
) ||
2391 view
== VIEW(REQ_VIEW_PAGER
))) {
2392 open_view(view
, REQ_VIEW_DIFF
, OPEN_SPLIT
);
2396 /* Always scroll the view even if it was split. That way
2397 * you can use Enter to scroll through the log view and
2398 * split open each commit diff. */
2399 scroll_view(view
, REQ_SCROLL_LINE_DOWN
);
2401 /* FIXME: A minor workaround. Scrolling the view will call report("")
2402 * but if we are scrolling a non-current view this won't properly
2403 * update the view title. */
2405 update_view_title(view
);
2411 pager_grep(struct view
*view
, struct line
*line
)
2414 char *text
= line
->data
;
2419 if (regexec(view
->regex
, text
, 1, &pmatch
, 0) == REG_NOMATCH
)
2426 pager_select(struct view
*view
, struct line
*line
)
2428 if (line
->type
== LINE_COMMIT
) {
2429 char *text
= line
->data
;
2431 string_copy(view
->ref
, text
+ STRING_SIZE("commit "));
2432 string_copy(ref_commit
, view
->ref
);
2436 static struct view_ops pager_ops
= {
2450 /* Parse output from git-ls-tree(1):
2452 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2453 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2454 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2455 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2458 #define SIZEOF_TREE_ATTR \
2459 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2461 #define TREE_UP_FORMAT "040000 tree %s\t.."
2464 tree_compare_entry(enum line_type type1
, char *name1
,
2465 enum line_type type2
, char *name2
)
2467 if (type1
!= type2
) {
2468 if (type1
== LINE_TREE_DIR
)
2473 return strcmp(name1
, name2
);
2477 tree_read(struct view
*view
, char *text
)
2479 size_t textlen
= strlen(text
);
2480 char buf
[SIZEOF_STR
];
2482 enum line_type type
;
2483 bool first_read
= view
->lines
== 0;
2485 if (textlen
<= SIZEOF_TREE_ATTR
)
2488 type
= text
[STRING_SIZE("100644 ")] == 't'
2489 ? LINE_TREE_DIR
: LINE_TREE_FILE
;
2492 /* Add path info line */
2493 if (string_format(buf
, "Directory path /%s", opt_path
) &&
2494 realloc_lines(view
, view
->line_size
+ 1) &&
2495 pager_read(view
, buf
))
2496 view
->line
[view
->lines
- 1].type
= LINE_DEFAULT
;
2500 /* Insert "link" to parent directory. */
2502 string_format(buf
, TREE_UP_FORMAT
, view
->ref
) &&
2503 realloc_lines(view
, view
->line_size
+ 1) &&
2504 pager_read(view
, buf
))
2505 view
->line
[view
->lines
- 1].type
= LINE_TREE_DIR
;
2510 /* Strip the path part ... */
2512 size_t pathlen
= textlen
- SIZEOF_TREE_ATTR
;
2513 size_t striplen
= strlen(opt_path
);
2514 char *path
= text
+ SIZEOF_TREE_ATTR
;
2516 if (pathlen
> striplen
)
2517 memmove(path
, path
+ striplen
,
2518 pathlen
- striplen
+ 1);
2521 /* Skip "Directory ..." and ".." line. */
2522 for (pos
= 1 + !!*opt_path
; pos
< view
->lines
; pos
++) {
2523 struct line
*line
= &view
->line
[pos
];
2524 char *path1
= ((char *) line
->data
) + SIZEOF_TREE_ATTR
;
2525 char *path2
= text
+ SIZEOF_TREE_ATTR
;
2526 int cmp
= tree_compare_entry(line
->type
, path1
, type
, path2
);
2531 text
= strdup(text
);
2535 if (view
->lines
> pos
)
2536 memmove(&view
->line
[pos
+ 1], &view
->line
[pos
],
2537 (view
->lines
- pos
) * sizeof(*line
));
2539 line
= &view
->line
[pos
];
2546 if (!pager_read(view
, text
))
2549 /* Move the current line to the first tree entry. */
2553 view
->line
[view
->lines
- 1].type
= type
;
2558 tree_enter(struct view
*view
, struct line
*line
)
2560 enum open_flags flags
= display
[0] == view ? OPEN_SPLIT
: OPEN_DEFAULT
;
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 *data
= line
->data
;
2580 char *basename
= data
+ SIZEOF_TREE_ATTR
;
2582 if (!string_format_from(opt_path
, &pathlen
, "%s/", basename
)) {
2583 opt_path
[origlen
] = 0;
2588 /* Trees and subtrees share the same ID, so they are not not
2589 * unique like blobs. */
2590 flags
|= OPEN_RELOAD
;
2591 request
= REQ_VIEW_TREE
;
2594 case LINE_TREE_FILE
:
2595 request
= REQ_VIEW_BLOB
;
2602 open_view(view
, request
, flags
);
2608 tree_select(struct view
*view
, struct line
*line
)
2610 char *text
= line
->data
;
2612 text
+= STRING_SIZE("100644 blob ");
2614 if (line
->type
== LINE_TREE_FILE
) {
2615 string_ncopy(ref_blob
, text
, 40);
2616 /* Also update the blob view's ref, since all there must always
2618 string_copy(VIEW(REQ_VIEW_BLOB
)->ref
, ref_blob
);
2620 } else if (line
->type
!= LINE_TREE_DIR
) {
2624 string_ncopy(view
->ref
, text
, 40);
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
);