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1 /* Copyright (c) 2006-2008 Jonas Fonseca <fonseca@diku.dk>
2 *
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.
7 *
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.
12 */
14 #ifdef HAVE_CONFIG_H
15 #include "config.h"
16 #endif
18 #ifndef TIG_VERSION
19 #define TIG_VERSION "unknown-version"
20 #endif
22 #ifndef DEBUG
23 #define NDEBUG
24 #endif
26 #include <assert.h>
27 #include <errno.h>
28 #include <ctype.h>
29 #include <signal.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include <sys/stat.h>
36 #include <unistd.h>
37 #include <time.h>
39 #include <regex.h>
41 #include <locale.h>
42 #include <langinfo.h>
43 #include <iconv.h>
45 /* ncurses(3): Must be defined to have extended wide-character functions. */
46 #define _XOPEN_SOURCE_EXTENDED
48 #include <curses.h>
50 #if __GNUC__ >= 3
51 #define __NORETURN __attribute__((__noreturn__))
52 #else
53 #define __NORETURN
54 #endif
56 static void __NORETURN die(const char *err, ...);
57 static void warn(const char *msg, ...);
58 static void report(const char *msg, ...);
59 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
60 static void set_nonblocking_input(bool loading);
61 static size_t utf8_length(const char *string, size_t max_width, int *trimmed, bool reserve);
63 #define ABS(x) ((x) >= 0 ? (x) : -(x))
64 #define MIN(x, y) ((x) < (y) ? (x) : (y))
66 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
67 #define STRING_SIZE(x) (sizeof(x) - 1)
69 #define SIZEOF_STR 1024 /* Default string size. */
70 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
71 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
73 /* Revision graph */
75 #define REVGRAPH_INIT 'I'
76 #define REVGRAPH_MERGE 'M'
77 #define REVGRAPH_BRANCH '+'
78 #define REVGRAPH_COMMIT '*'
79 #define REVGRAPH_BOUND '^'
80 #define REVGRAPH_LINE '|'
82 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
84 /* This color name can be used to refer to the default term colors. */
85 #define COLOR_DEFAULT (-1)
87 #define ICONV_NONE ((iconv_t) -1)
88 #ifndef ICONV_CONST
89 #define ICONV_CONST /* nothing */
90 #endif
92 /* The format and size of the date column in the main view. */
93 #define DATE_FORMAT "%Y-%m-%d %H:%M"
94 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
96 #define AUTHOR_COLS 20
97 #define ID_COLS 8
99 /* The default interval between line numbers. */
100 #define NUMBER_INTERVAL 5
102 #define TABSIZE 8
104 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
106 #ifndef GIT_CONFIG
107 #define GIT_CONFIG "git config"
108 #endif
110 #define TIG_LS_REMOTE \
111 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
113 #define TIG_DIFF_CMD \
114 "git show --pretty=fuller --no-color --root --patch-with-stat --find-copies-harder -C %s 2>/dev/null"
116 #define TIG_LOG_CMD \
117 "git log --no-color --cc --stat -n100 %s 2>/dev/null"
119 #define TIG_MAIN_CMD \
120 "git log --no-color --topo-order --parents --boundary --pretty=raw %s 2>/dev/null"
122 #define TIG_TREE_CMD \
123 "git ls-tree %s %s"
125 #define TIG_BLOB_CMD \
126 "git cat-file blob %s"
128 /* XXX: Needs to be defined to the empty string. */
129 #define TIG_HELP_CMD ""
130 #define TIG_PAGER_CMD ""
131 #define TIG_STATUS_CMD ""
132 #define TIG_STAGE_CMD ""
133 #define TIG_BLAME_CMD ""
135 /* Some ascii-shorthands fitted into the ncurses namespace. */
136 #define KEY_TAB '\t'
137 #define KEY_RETURN '\r'
138 #define KEY_ESC 27
141 struct ref {
142 char *name; /* Ref name; tag or head names are shortened. */
143 char id[SIZEOF_REV]; /* Commit SHA1 ID */
144 unsigned int tag:1; /* Is it a tag? */
145 unsigned int ltag:1; /* If so, is the tag local? */
146 unsigned int remote:1; /* Is it a remote ref? */
147 unsigned int next:1; /* For ref lists: are there more refs? */
148 };
150 static struct ref **get_refs(char *id);
152 struct int_map {
153 const char *name;
154 int namelen;
155 int value;
156 };
158 static int
159 set_from_int_map(struct int_map *map, size_t map_size,
160 int *value, const char *name, int namelen)
161 {
163 int i;
165 for (i = 0; i < map_size; i++)
166 if (namelen == map[i].namelen &&
167 !strncasecmp(name, map[i].name, namelen)) {
168 *value = map[i].value;
169 return OK;
170 }
172 return ERR;
173 }
176 /*
177 * String helpers
178 */
180 static inline void
181 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
182 {
183 if (srclen > dstlen - 1)
184 srclen = dstlen - 1;
186 strncpy(dst, src, srclen);
187 dst[srclen] = 0;
188 }
190 /* Shorthands for safely copying into a fixed buffer. */
192 #define string_copy(dst, src) \
193 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
195 #define string_ncopy(dst, src, srclen) \
196 string_ncopy_do(dst, sizeof(dst), src, srclen)
198 #define string_copy_rev(dst, src) \
199 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
201 #define string_add(dst, from, src) \
202 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
204 static char *
205 chomp_string(char *name)
206 {
207 int namelen;
209 while (isspace(*name))
210 name++;
212 namelen = strlen(name) - 1;
213 while (namelen > 0 && isspace(name[namelen]))
214 name[namelen--] = 0;
216 return name;
217 }
219 static bool
220 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
221 {
222 va_list args;
223 size_t pos = bufpos ? *bufpos : 0;
225 va_start(args, fmt);
226 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
227 va_end(args);
229 if (bufpos)
230 *bufpos = pos;
232 return pos >= bufsize ? FALSE : TRUE;
233 }
235 #define string_format(buf, fmt, args...) \
236 string_nformat(buf, sizeof(buf), NULL, fmt, args)
238 #define string_format_from(buf, from, fmt, args...) \
239 string_nformat(buf, sizeof(buf), from, fmt, args)
241 static int
242 string_enum_compare(const char *str1, const char *str2, int len)
243 {
244 size_t i;
246 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
248 /* Diff-Header == DIFF_HEADER */
249 for (i = 0; i < len; i++) {
250 if (toupper(str1[i]) == toupper(str2[i]))
251 continue;
253 if (string_enum_sep(str1[i]) &&
254 string_enum_sep(str2[i]))
255 continue;
257 return str1[i] - str2[i];
258 }
260 return 0;
261 }
263 /* Shell quoting
264 *
265 * NOTE: The following is a slightly modified copy of the git project's shell
266 * quoting routines found in the quote.c file.
267 *
268 * Help to copy the thing properly quoted for the shell safety. any single
269 * quote is replaced with '\'', any exclamation point is replaced with '\!',
270 * and the whole thing is enclosed in a
271 *
272 * E.g.
273 * original sq_quote result
274 * name ==> name ==> 'name'
275 * a b ==> a b ==> 'a b'
276 * a'b ==> a'\''b ==> 'a'\''b'
277 * a!b ==> a'\!'b ==> 'a'\!'b'
278 */
280 static size_t
281 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
282 {
283 char c;
285 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
287 BUFPUT('\'');
288 while ((c = *src++)) {
289 if (c == '\'' || c == '!') {
290 BUFPUT('\'');
291 BUFPUT('\\');
292 BUFPUT(c);
293 BUFPUT('\'');
294 } else {
295 BUFPUT(c);
296 }
297 }
298 BUFPUT('\'');
300 if (bufsize < SIZEOF_STR)
301 buf[bufsize] = 0;
303 return bufsize;
304 }
307 /*
308 * User requests
309 */
311 #define REQ_INFO \
312 /* XXX: Keep the view request first and in sync with views[]. */ \
313 REQ_GROUP("View switching") \
314 REQ_(VIEW_MAIN, "Show main view"), \
315 REQ_(VIEW_DIFF, "Show diff view"), \
316 REQ_(VIEW_LOG, "Show log view"), \
317 REQ_(VIEW_TREE, "Show tree view"), \
318 REQ_(VIEW_BLOB, "Show blob view"), \
319 REQ_(VIEW_BLAME, "Show blame view"), \
320 REQ_(VIEW_HELP, "Show help page"), \
321 REQ_(VIEW_PAGER, "Show pager view"), \
322 REQ_(VIEW_STATUS, "Show status view"), \
323 REQ_(VIEW_STAGE, "Show stage view"), \
324 \
325 REQ_GROUP("View manipulation") \
326 REQ_(ENTER, "Enter current line and scroll"), \
327 REQ_(NEXT, "Move to next"), \
328 REQ_(PREVIOUS, "Move to previous"), \
329 REQ_(VIEW_NEXT, "Move focus to next view"), \
330 REQ_(REFRESH, "Reload and refresh"), \
331 REQ_(VIEW_CLOSE, "Close the current view"), \
332 REQ_(QUIT, "Close all views and quit"), \
333 \
334 REQ_GROUP("Cursor navigation") \
335 REQ_(MOVE_UP, "Move cursor one line up"), \
336 REQ_(MOVE_DOWN, "Move cursor one line down"), \
337 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
338 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
339 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
340 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
341 \
342 REQ_GROUP("Scrolling") \
343 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
344 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
345 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
346 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
347 \
348 REQ_GROUP("Searching") \
349 REQ_(SEARCH, "Search the view"), \
350 REQ_(SEARCH_BACK, "Search backwards in the view"), \
351 REQ_(FIND_NEXT, "Find next search match"), \
352 REQ_(FIND_PREV, "Find previous search match"), \
353 \
354 REQ_GROUP("Misc") \
355 REQ_(PROMPT, "Bring up the prompt"), \
356 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
357 REQ_(SCREEN_RESIZE, "Resize the screen"), \
358 REQ_(SHOW_VERSION, "Show version information"), \
359 REQ_(STOP_LOADING, "Stop all loading views"), \
360 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
361 REQ_(TOGGLE_DATE, "Toggle date display"), \
362 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
363 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
364 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
365 REQ_(STATUS_UPDATE, "Update file status"), \
366 REQ_(STATUS_MERGE, "Merge file using external tool"), \
367 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
368 REQ_(EDIT, "Open in editor"), \
369 REQ_(NONE, "Do nothing")
372 /* User action requests. */
373 enum request {
374 #define REQ_GROUP(help)
375 #define REQ_(req, help) REQ_##req
377 /* Offset all requests to avoid conflicts with ncurses getch values. */
378 REQ_OFFSET = KEY_MAX + 1,
379 REQ_INFO
381 #undef REQ_GROUP
382 #undef REQ_
383 };
385 struct request_info {
386 enum request request;
387 char *name;
388 int namelen;
389 char *help;
390 };
392 static struct request_info req_info[] = {
393 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
394 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
395 REQ_INFO
396 #undef REQ_GROUP
397 #undef REQ_
398 };
400 static enum request
401 get_request(const char *name)
402 {
403 int namelen = strlen(name);
404 int i;
406 for (i = 0; i < ARRAY_SIZE(req_info); i++)
407 if (req_info[i].namelen == namelen &&
408 !string_enum_compare(req_info[i].name, name, namelen))
409 return req_info[i].request;
411 return REQ_NONE;
412 }
415 /*
416 * Options
417 */
419 static const char usage[] =
420 "tig " TIG_VERSION " (" __DATE__ ")\n"
421 "\n"
422 "Usage: tig [options] [revs] [--] [paths]\n"
423 " or: tig show [options] [revs] [--] [paths]\n"
424 " or: tig blame [rev] path\n"
425 " or: tig status\n"
426 " or: tig < [git command output]\n"
427 "\n"
428 "Options:\n"
429 " -v, --version Show version and exit\n"
430 " -h, --help Show help message and exit";
432 /* Option and state variables. */
433 static bool opt_date = TRUE;
434 static bool opt_author = TRUE;
435 static bool opt_line_number = FALSE;
436 static bool opt_rev_graph = FALSE;
437 static bool opt_show_refs = TRUE;
438 static int opt_num_interval = NUMBER_INTERVAL;
439 static int opt_tab_size = TABSIZE;
440 static enum request opt_request = REQ_VIEW_MAIN;
441 static char opt_cmd[SIZEOF_STR] = "";
442 static char opt_path[SIZEOF_STR] = "";
443 static char opt_ref[SIZEOF_REF] = "";
444 static FILE *opt_pipe = NULL;
445 static char opt_encoding[20] = "UTF-8";
446 static bool opt_utf8 = TRUE;
447 static char opt_codeset[20] = "UTF-8";
448 static iconv_t opt_iconv = ICONV_NONE;
449 static char opt_search[SIZEOF_STR] = "";
450 static char opt_cdup[SIZEOF_STR] = "";
451 static char opt_git_dir[SIZEOF_STR] = "";
452 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
453 static char opt_editor[SIZEOF_STR] = "";
455 enum option_type {
456 OPT_NONE,
457 OPT_INT,
458 };
460 static bool
461 check_option(char *opt, char short_name, char *name, enum option_type type, ...)
462 {
463 va_list args;
464 char *value = "";
465 int *number;
467 if (opt[0] != '-')
468 return FALSE;
470 if (opt[1] == '-') {
471 int namelen = strlen(name);
473 opt += 2;
475 if (strncmp(opt, name, namelen))
476 return FALSE;
478 if (opt[namelen] == '=')
479 value = opt + namelen + 1;
481 } else {
482 if (!short_name || opt[1] != short_name)
483 return FALSE;
484 value = opt + 2;
485 }
487 va_start(args, type);
488 if (type == OPT_INT) {
489 number = va_arg(args, int *);
490 if (isdigit(*value))
491 *number = atoi(value);
492 }
493 va_end(args);
495 return TRUE;
496 }
498 /* Returns the index of log or diff command or -1 to exit. */
499 static bool
500 parse_options(int argc, char *argv[])
501 {
502 char *altargv[1024];
503 int altargc = 0;
504 char *subcommand;
505 int i;
507 if (argc <= 1)
508 return TRUE;
510 subcommand = argv[1];
511 if (!strcmp(subcommand, "status")) {
512 opt_request = REQ_VIEW_STATUS;
513 if (argc > 2)
514 warn("ignoring arguments after `%s'", subcommand);
515 return TRUE;
517 } else if (!strcmp(subcommand, "blame")) {
518 opt_request = REQ_VIEW_BLAME;
519 if (argc <= 2 || argc > 4)
520 die("invalid number of options to blame\n\n%s", usage);
522 i = 2;
523 if (argc == 4) {
524 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
525 i++;
526 }
528 string_ncopy(opt_path, argv[i], strlen(argv[i]));
529 return TRUE;
531 } else if (!strcmp(subcommand, "show")) {
532 opt_request = REQ_VIEW_DIFF;
534 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
535 opt_request = subcommand[0] == 'l'
536 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
537 warn("`tig %s' has been deprecated", subcommand);
539 } else {
540 subcommand = NULL;
541 }
543 for (i = 1 + !!subcommand; i < argc; i++) {
544 char *opt = argv[i];
546 if (opt[0] && opt[0] != '-')
547 break;
549 if (!strcmp(opt, "--")) {
550 i++;
551 break;
552 }
554 if (check_option(opt, 'v', "version", OPT_NONE)) {
555 printf("tig version %s\n", TIG_VERSION);
556 return FALSE;
557 }
559 if (check_option(opt, 'h', "help", OPT_NONE)) {
560 printf(usage);
561 return FALSE;
562 }
564 if (!strcmp(opt, "-S")) {
565 warn("`%s' has been deprecated; use `tig status' instead", opt);
566 opt_request = REQ_VIEW_STATUS;
567 continue;
568 }
570 if (!strcmp(opt, "-l")) {
571 opt_request = REQ_VIEW_LOG;
572 } else if (!strcmp(opt, "-d")) {
573 opt_request = REQ_VIEW_DIFF;
574 } else if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
575 opt_line_number = TRUE;
576 } else if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
577 opt_tab_size = MIN(opt_tab_size, TABSIZE);
578 } else {
579 if (altargc >= ARRAY_SIZE(altargv))
580 die("maximum number of arguments exceeded");
581 altargv[altargc++] = opt;
582 continue;
583 }
585 warn("`%s' has been deprecated", opt);
586 }
588 if (!isatty(STDIN_FILENO)) {
589 opt_request = REQ_VIEW_PAGER;
590 opt_pipe = stdin;
592 } else if (i < argc || altargc > 0) {
593 int alti = 0;
594 size_t buf_size;
596 if (opt_request == REQ_VIEW_MAIN)
597 /* XXX: This is vulnerable to the user overriding
598 * options required for the main view parser. */
599 string_copy(opt_cmd, "git log --no-color --pretty=raw --boundary --parents");
600 else
601 string_format(opt_cmd, "git %s", subcommand);
602 buf_size = strlen(opt_cmd);
604 while (buf_size < sizeof(opt_cmd) && alti < altargc) {
605 opt_cmd[buf_size++] = ' ';
606 buf_size = sq_quote(opt_cmd, buf_size, altargv[alti++]);
607 }
609 while (buf_size < sizeof(opt_cmd) && i < argc) {
610 opt_cmd[buf_size++] = ' ';
611 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
612 }
614 if (buf_size >= sizeof(opt_cmd))
615 die("command too long");
617 opt_cmd[buf_size] = 0;
618 }
620 return TRUE;
621 }
624 /*
625 * Line-oriented content detection.
626 */
628 #define LINE_INFO \
629 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
630 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
631 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
632 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
633 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
634 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
635 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
636 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
637 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
638 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
639 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
640 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
641 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
642 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
643 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
644 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
645 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
646 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
647 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
648 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
649 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
650 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
651 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
652 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
653 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
654 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
655 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
656 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
657 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
658 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
659 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
660 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
661 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
662 LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
663 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
664 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
665 LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
666 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
667 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
668 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
669 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
670 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
671 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
672 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
673 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
674 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
675 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
676 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
677 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
678 LINE(BLAME_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
679 LINE(BLAME_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
680 LINE(BLAME_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
681 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
682 LINE(BLAME_LINENO, "", COLOR_CYAN, COLOR_DEFAULT, 0)
684 enum line_type {
685 #define LINE(type, line, fg, bg, attr) \
686 LINE_##type
687 LINE_INFO
688 #undef LINE
689 };
691 struct line_info {
692 const char *name; /* Option name. */
693 int namelen; /* Size of option name. */
694 const char *line; /* The start of line to match. */
695 int linelen; /* Size of string to match. */
696 int fg, bg, attr; /* Color and text attributes for the lines. */
697 };
699 static struct line_info line_info[] = {
700 #define LINE(type, line, fg, bg, attr) \
701 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
702 LINE_INFO
703 #undef LINE
704 };
706 static enum line_type
707 get_line_type(char *line)
708 {
709 int linelen = strlen(line);
710 enum line_type type;
712 for (type = 0; type < ARRAY_SIZE(line_info); type++)
713 /* Case insensitive search matches Signed-off-by lines better. */
714 if (linelen >= line_info[type].linelen &&
715 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
716 return type;
718 return LINE_DEFAULT;
719 }
721 static inline int
722 get_line_attr(enum line_type type)
723 {
724 assert(type < ARRAY_SIZE(line_info));
725 return COLOR_PAIR(type) | line_info[type].attr;
726 }
728 static struct line_info *
729 get_line_info(char *name, int namelen)
730 {
731 enum line_type type;
733 for (type = 0; type < ARRAY_SIZE(line_info); type++)
734 if (namelen == line_info[type].namelen &&
735 !string_enum_compare(line_info[type].name, name, namelen))
736 return &line_info[type];
738 return NULL;
739 }
741 static void
742 init_colors(void)
743 {
744 int default_bg = line_info[LINE_DEFAULT].bg;
745 int default_fg = line_info[LINE_DEFAULT].fg;
746 enum line_type type;
748 start_color();
750 if (assume_default_colors(default_fg, default_bg) == ERR) {
751 default_bg = COLOR_BLACK;
752 default_fg = COLOR_WHITE;
753 }
755 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
756 struct line_info *info = &line_info[type];
757 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
758 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
760 init_pair(type, fg, bg);
761 }
762 }
764 struct line {
765 enum line_type type;
767 /* State flags */
768 unsigned int selected:1;
769 unsigned int dirty:1;
771 void *data; /* User data */
772 };
775 /*
776 * Keys
777 */
779 struct keybinding {
780 int alias;
781 enum request request;
782 struct keybinding *next;
783 };
785 static struct keybinding default_keybindings[] = {
786 /* View switching */
787 { 'm', REQ_VIEW_MAIN },
788 { 'd', REQ_VIEW_DIFF },
789 { 'l', REQ_VIEW_LOG },
790 { 't', REQ_VIEW_TREE },
791 { 'f', REQ_VIEW_BLOB },
792 { 'B', REQ_VIEW_BLAME },
793 { 'p', REQ_VIEW_PAGER },
794 { 'h', REQ_VIEW_HELP },
795 { 'S', REQ_VIEW_STATUS },
796 { 'c', REQ_VIEW_STAGE },
798 /* View manipulation */
799 { 'q', REQ_VIEW_CLOSE },
800 { KEY_TAB, REQ_VIEW_NEXT },
801 { KEY_RETURN, REQ_ENTER },
802 { KEY_UP, REQ_PREVIOUS },
803 { KEY_DOWN, REQ_NEXT },
804 { 'R', REQ_REFRESH },
806 /* Cursor navigation */
807 { 'k', REQ_MOVE_UP },
808 { 'j', REQ_MOVE_DOWN },
809 { KEY_HOME, REQ_MOVE_FIRST_LINE },
810 { KEY_END, REQ_MOVE_LAST_LINE },
811 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
812 { ' ', REQ_MOVE_PAGE_DOWN },
813 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
814 { 'b', REQ_MOVE_PAGE_UP },
815 { '-', REQ_MOVE_PAGE_UP },
817 /* Scrolling */
818 { KEY_IC, REQ_SCROLL_LINE_UP },
819 { KEY_DC, REQ_SCROLL_LINE_DOWN },
820 { 'w', REQ_SCROLL_PAGE_UP },
821 { 's', REQ_SCROLL_PAGE_DOWN },
823 /* Searching */
824 { '/', REQ_SEARCH },
825 { '?', REQ_SEARCH_BACK },
826 { 'n', REQ_FIND_NEXT },
827 { 'N', REQ_FIND_PREV },
829 /* Misc */
830 { 'Q', REQ_QUIT },
831 { 'z', REQ_STOP_LOADING },
832 { 'v', REQ_SHOW_VERSION },
833 { 'r', REQ_SCREEN_REDRAW },
834 { '.', REQ_TOGGLE_LINENO },
835 { 'D', REQ_TOGGLE_DATE },
836 { 'A', REQ_TOGGLE_AUTHOR },
837 { 'g', REQ_TOGGLE_REV_GRAPH },
838 { 'F', REQ_TOGGLE_REFS },
839 { ':', REQ_PROMPT },
840 { 'u', REQ_STATUS_UPDATE },
841 { 'M', REQ_STATUS_MERGE },
842 { ',', REQ_TREE_PARENT },
843 { 'e', REQ_EDIT },
845 /* Using the ncurses SIGWINCH handler. */
846 { KEY_RESIZE, REQ_SCREEN_RESIZE },
847 };
849 #define KEYMAP_INFO \
850 KEYMAP_(GENERIC), \
851 KEYMAP_(MAIN), \
852 KEYMAP_(DIFF), \
853 KEYMAP_(LOG), \
854 KEYMAP_(TREE), \
855 KEYMAP_(BLOB), \
856 KEYMAP_(BLAME), \
857 KEYMAP_(PAGER), \
858 KEYMAP_(HELP), \
859 KEYMAP_(STATUS), \
860 KEYMAP_(STAGE)
862 enum keymap {
863 #define KEYMAP_(name) KEYMAP_##name
864 KEYMAP_INFO
865 #undef KEYMAP_
866 };
868 static struct int_map keymap_table[] = {
869 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
870 KEYMAP_INFO
871 #undef KEYMAP_
872 };
874 #define set_keymap(map, name) \
875 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
877 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
879 static void
880 add_keybinding(enum keymap keymap, enum request request, int key)
881 {
882 struct keybinding *keybinding;
884 keybinding = calloc(1, sizeof(*keybinding));
885 if (!keybinding)
886 die("Failed to allocate keybinding");
888 keybinding->alias = key;
889 keybinding->request = request;
890 keybinding->next = keybindings[keymap];
891 keybindings[keymap] = keybinding;
892 }
894 /* Looks for a key binding first in the given map, then in the generic map, and
895 * lastly in the default keybindings. */
896 static enum request
897 get_keybinding(enum keymap keymap, int key)
898 {
899 struct keybinding *kbd;
900 int i;
902 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
903 if (kbd->alias == key)
904 return kbd->request;
906 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
907 if (kbd->alias == key)
908 return kbd->request;
910 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
911 if (default_keybindings[i].alias == key)
912 return default_keybindings[i].request;
914 return (enum request) key;
915 }
918 struct key {
919 char *name;
920 int value;
921 };
923 static struct key key_table[] = {
924 { "Enter", KEY_RETURN },
925 { "Space", ' ' },
926 { "Backspace", KEY_BACKSPACE },
927 { "Tab", KEY_TAB },
928 { "Escape", KEY_ESC },
929 { "Left", KEY_LEFT },
930 { "Right", KEY_RIGHT },
931 { "Up", KEY_UP },
932 { "Down", KEY_DOWN },
933 { "Insert", KEY_IC },
934 { "Delete", KEY_DC },
935 { "Hash", '#' },
936 { "Home", KEY_HOME },
937 { "End", KEY_END },
938 { "PageUp", KEY_PPAGE },
939 { "PageDown", KEY_NPAGE },
940 { "F1", KEY_F(1) },
941 { "F2", KEY_F(2) },
942 { "F3", KEY_F(3) },
943 { "F4", KEY_F(4) },
944 { "F5", KEY_F(5) },
945 { "F6", KEY_F(6) },
946 { "F7", KEY_F(7) },
947 { "F8", KEY_F(8) },
948 { "F9", KEY_F(9) },
949 { "F10", KEY_F(10) },
950 { "F11", KEY_F(11) },
951 { "F12", KEY_F(12) },
952 };
954 static int
955 get_key_value(const char *name)
956 {
957 int i;
959 for (i = 0; i < ARRAY_SIZE(key_table); i++)
960 if (!strcasecmp(key_table[i].name, name))
961 return key_table[i].value;
963 if (strlen(name) == 1 && isprint(*name))
964 return (int) *name;
966 return ERR;
967 }
969 static char *
970 get_key_name(int key_value)
971 {
972 static char key_char[] = "'X'";
973 char *seq = NULL;
974 int key;
976 for (key = 0; key < ARRAY_SIZE(key_table); key++)
977 if (key_table[key].value == key_value)
978 seq = key_table[key].name;
980 if (seq == NULL &&
981 key_value < 127 &&
982 isprint(key_value)) {
983 key_char[1] = (char) key_value;
984 seq = key_char;
985 }
987 return seq ? seq : "'?'";
988 }
990 static char *
991 get_key(enum request request)
992 {
993 static char buf[BUFSIZ];
994 size_t pos = 0;
995 char *sep = "";
996 int i;
998 buf[pos] = 0;
1000 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1001 struct keybinding *keybinding = &default_keybindings[i];
1003 if (keybinding->request != request)
1004 continue;
1006 if (!string_format_from(buf, &pos, "%s%s", sep,
1007 get_key_name(keybinding->alias)))
1008 return "Too many keybindings!";
1009 sep = ", ";
1010 }
1012 return buf;
1013 }
1015 struct run_request {
1016 enum keymap keymap;
1017 int key;
1018 char cmd[SIZEOF_STR];
1019 };
1021 static struct run_request *run_request;
1022 static size_t run_requests;
1024 static enum request
1025 add_run_request(enum keymap keymap, int key, int argc, char **argv)
1026 {
1027 struct run_request *tmp;
1028 struct run_request req = { keymap, key };
1029 size_t bufpos;
1031 for (bufpos = 0; argc > 0; argc--, argv++)
1032 if (!string_format_from(req.cmd, &bufpos, "%s ", *argv))
1033 return REQ_NONE;
1035 req.cmd[bufpos - 1] = 0;
1037 tmp = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
1038 if (!tmp)
1039 return REQ_NONE;
1041 run_request = tmp;
1042 run_request[run_requests++] = req;
1044 return REQ_NONE + run_requests;
1045 }
1047 static struct run_request *
1048 get_run_request(enum request request)
1049 {
1050 if (request <= REQ_NONE)
1051 return NULL;
1052 return &run_request[request - REQ_NONE - 1];
1053 }
1055 static void
1056 add_builtin_run_requests(void)
1057 {
1058 struct {
1059 enum keymap keymap;
1060 int key;
1061 char *argv[1];
1062 } reqs[] = {
1063 { KEYMAP_MAIN, 'C', { "git cherry-pick %(commit)" } },
1064 { KEYMAP_GENERIC, 'G', { "git gc" } },
1065 };
1066 int i;
1068 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1069 enum request req;
1071 req = add_run_request(reqs[i].keymap, reqs[i].key, 1, reqs[i].argv);
1072 if (req != REQ_NONE)
1073 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1074 }
1075 }
1077 /*
1078 * User config file handling.
1079 */
1081 static struct int_map color_map[] = {
1082 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1083 COLOR_MAP(DEFAULT),
1084 COLOR_MAP(BLACK),
1085 COLOR_MAP(BLUE),
1086 COLOR_MAP(CYAN),
1087 COLOR_MAP(GREEN),
1088 COLOR_MAP(MAGENTA),
1089 COLOR_MAP(RED),
1090 COLOR_MAP(WHITE),
1091 COLOR_MAP(YELLOW),
1092 };
1094 #define set_color(color, name) \
1095 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1097 static struct int_map attr_map[] = {
1098 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1099 ATTR_MAP(NORMAL),
1100 ATTR_MAP(BLINK),
1101 ATTR_MAP(BOLD),
1102 ATTR_MAP(DIM),
1103 ATTR_MAP(REVERSE),
1104 ATTR_MAP(STANDOUT),
1105 ATTR_MAP(UNDERLINE),
1106 };
1108 #define set_attribute(attr, name) \
1109 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1111 static int config_lineno;
1112 static bool config_errors;
1113 static char *config_msg;
1115 /* Wants: object fgcolor bgcolor [attr] */
1116 static int
1117 option_color_command(int argc, char *argv[])
1118 {
1119 struct line_info *info;
1121 if (argc != 3 && argc != 4) {
1122 config_msg = "Wrong number of arguments given to color command";
1123 return ERR;
1124 }
1126 info = get_line_info(argv[0], strlen(argv[0]));
1127 if (!info) {
1128 config_msg = "Unknown color name";
1129 return ERR;
1130 }
1132 if (set_color(&info->fg, argv[1]) == ERR ||
1133 set_color(&info->bg, argv[2]) == ERR) {
1134 config_msg = "Unknown color";
1135 return ERR;
1136 }
1138 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1139 config_msg = "Unknown attribute";
1140 return ERR;
1141 }
1143 return OK;
1144 }
1146 static bool parse_bool(const char *s)
1147 {
1148 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1149 !strcmp(s, "yes")) ? TRUE : FALSE;
1150 }
1152 /* Wants: name = value */
1153 static int
1154 option_set_command(int argc, char *argv[])
1155 {
1156 if (argc != 3) {
1157 config_msg = "Wrong number of arguments given to set command";
1158 return ERR;
1159 }
1161 if (strcmp(argv[1], "=")) {
1162 config_msg = "No value assigned";
1163 return ERR;
1164 }
1166 if (!strcmp(argv[0], "show-author")) {
1167 opt_author = parse_bool(argv[2]);
1168 return OK;
1169 }
1171 if (!strcmp(argv[0], "show-date")) {
1172 opt_date = parse_bool(argv[2]);
1173 return OK;
1174 }
1176 if (!strcmp(argv[0], "show-rev-graph")) {
1177 opt_rev_graph = parse_bool(argv[2]);
1178 return OK;
1179 }
1181 if (!strcmp(argv[0], "show-refs")) {
1182 opt_show_refs = parse_bool(argv[2]);
1183 return OK;
1184 }
1186 if (!strcmp(argv[0], "show-line-numbers")) {
1187 opt_line_number = parse_bool(argv[2]);
1188 return OK;
1189 }
1191 if (!strcmp(argv[0], "line-number-interval")) {
1192 opt_num_interval = atoi(argv[2]);
1193 return OK;
1194 }
1196 if (!strcmp(argv[0], "tab-size")) {
1197 opt_tab_size = atoi(argv[2]);
1198 return OK;
1199 }
1201 if (!strcmp(argv[0], "commit-encoding")) {
1202 char *arg = argv[2];
1203 int delimiter = *arg;
1204 int i;
1206 switch (delimiter) {
1207 case '"':
1208 case '\'':
1209 for (arg++, i = 0; arg[i]; i++)
1210 if (arg[i] == delimiter) {
1211 arg[i] = 0;
1212 break;
1213 }
1214 default:
1215 string_ncopy(opt_encoding, arg, strlen(arg));
1216 return OK;
1217 }
1218 }
1220 config_msg = "Unknown variable name";
1221 return ERR;
1222 }
1224 /* Wants: mode request key */
1225 static int
1226 option_bind_command(int argc, char *argv[])
1227 {
1228 enum request request;
1229 int keymap;
1230 int key;
1232 if (argc < 3) {
1233 config_msg = "Wrong number of arguments given to bind command";
1234 return ERR;
1235 }
1237 if (set_keymap(&keymap, argv[0]) == ERR) {
1238 config_msg = "Unknown key map";
1239 return ERR;
1240 }
1242 key = get_key_value(argv[1]);
1243 if (key == ERR) {
1244 config_msg = "Unknown key";
1245 return ERR;
1246 }
1248 request = get_request(argv[2]);
1249 if (request == REQ_NONE) {
1250 const char *obsolete[] = { "cherry-pick" };
1251 size_t namelen = strlen(argv[2]);
1252 int i;
1254 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1255 if (namelen == strlen(obsolete[i]) &&
1256 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1257 config_msg = "Obsolete request name";
1258 return ERR;
1259 }
1260 }
1261 }
1262 if (request == REQ_NONE && *argv[2]++ == '!')
1263 request = add_run_request(keymap, key, argc - 2, argv + 2);
1264 if (request == REQ_NONE) {
1265 config_msg = "Unknown request name";
1266 return ERR;
1267 }
1269 add_keybinding(keymap, request, key);
1271 return OK;
1272 }
1274 static int
1275 set_option(char *opt, char *value)
1276 {
1277 char *argv[16];
1278 int valuelen;
1279 int argc = 0;
1281 /* Tokenize */
1282 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1283 argv[argc++] = value;
1284 value += valuelen;
1286 /* Nothing more to tokenize or last available token. */
1287 if (!*value || argc >= ARRAY_SIZE(argv))
1288 break;
1290 *value++ = 0;
1291 while (isspace(*value))
1292 value++;
1293 }
1295 if (!strcmp(opt, "color"))
1296 return option_color_command(argc, argv);
1298 if (!strcmp(opt, "set"))
1299 return option_set_command(argc, argv);
1301 if (!strcmp(opt, "bind"))
1302 return option_bind_command(argc, argv);
1304 config_msg = "Unknown option command";
1305 return ERR;
1306 }
1308 static int
1309 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1310 {
1311 int status = OK;
1313 config_lineno++;
1314 config_msg = "Internal error";
1316 /* Check for comment markers, since read_properties() will
1317 * only ensure opt and value are split at first " \t". */
1318 optlen = strcspn(opt, "#");
1319 if (optlen == 0)
1320 return OK;
1322 if (opt[optlen] != 0) {
1323 config_msg = "No option value";
1324 status = ERR;
1326 } else {
1327 /* Look for comment endings in the value. */
1328 size_t len = strcspn(value, "#");
1330 if (len < valuelen) {
1331 valuelen = len;
1332 value[valuelen] = 0;
1333 }
1335 status = set_option(opt, value);
1336 }
1338 if (status == ERR) {
1339 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1340 config_lineno, (int) optlen, opt, config_msg);
1341 config_errors = TRUE;
1342 }
1344 /* Always keep going if errors are encountered. */
1345 return OK;
1346 }
1348 static void
1349 load_option_file(const char *path)
1350 {
1351 FILE *file;
1353 /* It's ok that the file doesn't exist. */
1354 file = fopen(path, "r");
1355 if (!file)
1356 return;
1358 config_lineno = 0;
1359 config_errors = FALSE;
1361 if (read_properties(file, " \t", read_option) == ERR ||
1362 config_errors == TRUE)
1363 fprintf(stderr, "Errors while loading %s.\n", path);
1364 }
1366 static int
1367 load_options(void)
1368 {
1369 char *home = getenv("HOME");
1370 char *tigrc_user = getenv("TIGRC_USER");
1371 char *tigrc_system = getenv("TIGRC_SYSTEM");
1372 char buf[SIZEOF_STR];
1374 add_builtin_run_requests();
1376 if (!tigrc_system) {
1377 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1378 return ERR;
1379 tigrc_system = buf;
1380 }
1381 load_option_file(tigrc_system);
1383 if (!tigrc_user) {
1384 if (!home || !string_format(buf, "%s/.tigrc", home))
1385 return ERR;
1386 tigrc_user = buf;
1387 }
1388 load_option_file(tigrc_user);
1390 return OK;
1391 }
1394 /*
1395 * The viewer
1396 */
1398 struct view;
1399 struct view_ops;
1401 /* The display array of active views and the index of the current view. */
1402 static struct view *display[2];
1403 static unsigned int current_view;
1405 /* Reading from the prompt? */
1406 static bool input_mode = FALSE;
1408 #define foreach_displayed_view(view, i) \
1409 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1411 #define displayed_views() (display[1] != NULL ? 2 : 1)
1413 /* Current head and commit ID */
1414 static char ref_blob[SIZEOF_REF] = "";
1415 static char ref_commit[SIZEOF_REF] = "HEAD";
1416 static char ref_head[SIZEOF_REF] = "HEAD";
1418 struct view {
1419 const char *name; /* View name */
1420 const char *cmd_fmt; /* Default command line format */
1421 const char *cmd_env; /* Command line set via environment */
1422 const char *id; /* Points to either of ref_{head,commit,blob} */
1424 struct view_ops *ops; /* View operations */
1426 enum keymap keymap; /* What keymap does this view have */
1428 char cmd[SIZEOF_STR]; /* Command buffer */
1429 char ref[SIZEOF_REF]; /* Hovered commit reference */
1430 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1432 int height, width; /* The width and height of the main window */
1433 WINDOW *win; /* The main window */
1434 WINDOW *title; /* The title window living below the main window */
1436 /* Navigation */
1437 unsigned long offset; /* Offset of the window top */
1438 unsigned long lineno; /* Current line number */
1440 /* Searching */
1441 char grep[SIZEOF_STR]; /* Search string */
1442 regex_t *regex; /* Pre-compiled regex */
1444 /* If non-NULL, points to the view that opened this view. If this view
1445 * is closed tig will switch back to the parent view. */
1446 struct view *parent;
1448 /* Buffering */
1449 size_t lines; /* Total number of lines */
1450 struct line *line; /* Line index */
1451 size_t line_alloc; /* Total number of allocated lines */
1452 size_t line_size; /* Total number of used lines */
1453 unsigned int digits; /* Number of digits in the lines member. */
1455 /* Loading */
1456 FILE *pipe;
1457 time_t start_time;
1458 };
1460 struct view_ops {
1461 /* What type of content being displayed. Used in the title bar. */
1462 const char *type;
1463 /* Open and reads in all view content. */
1464 bool (*open)(struct view *view);
1465 /* Read one line; updates view->line. */
1466 bool (*read)(struct view *view, char *data);
1467 /* Draw one line; @lineno must be < view->height. */
1468 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
1469 /* Depending on view handle a special requests. */
1470 enum request (*request)(struct view *view, enum request request, struct line *line);
1471 /* Search for regex in a line. */
1472 bool (*grep)(struct view *view, struct line *line);
1473 /* Select line */
1474 void (*select)(struct view *view, struct line *line);
1475 };
1477 static struct view_ops pager_ops;
1478 static struct view_ops main_ops;
1479 static struct view_ops tree_ops;
1480 static struct view_ops blob_ops;
1481 static struct view_ops blame_ops;
1482 static struct view_ops help_ops;
1483 static struct view_ops status_ops;
1484 static struct view_ops stage_ops;
1486 #define VIEW_STR(name, cmd, env, ref, ops, map) \
1487 { name, cmd, #env, ref, ops, map}
1489 #define VIEW_(id, name, ops, ref) \
1490 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1493 static struct view views[] = {
1494 VIEW_(MAIN, "main", &main_ops, ref_head),
1495 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1496 VIEW_(LOG, "log", &pager_ops, ref_head),
1497 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1498 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
1499 VIEW_(BLAME, "blame", &blame_ops, ref_commit),
1500 VIEW_(HELP, "help", &help_ops, ""),
1501 VIEW_(PAGER, "pager", &pager_ops, "stdin"),
1502 VIEW_(STATUS, "status", &status_ops, ""),
1503 VIEW_(STAGE, "stage", &stage_ops, ""),
1504 };
1506 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1508 #define foreach_view(view, i) \
1509 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1511 #define view_is_displayed(view) \
1512 (view == display[0] || view == display[1])
1514 static int
1515 draw_text(struct view *view, const char *string, int max_len,
1516 bool use_tilde, int tilde_attr)
1517 {
1518 int len = 0;
1519 int trimmed = FALSE;
1521 if (max_len <= 0)
1522 return 0;
1524 if (opt_utf8) {
1525 len = utf8_length(string, max_len, &trimmed, use_tilde);
1526 } else {
1527 len = strlen(string);
1528 if (len > max_len) {
1529 if (use_tilde) {
1530 max_len -= 1;
1531 }
1532 len = max_len;
1533 trimmed = TRUE;
1534 }
1535 }
1537 waddnstr(view->win, string, len);
1538 if (trimmed && use_tilde) {
1539 if (tilde_attr != -1)
1540 wattrset(view->win, tilde_attr);
1541 waddch(view->win, '~');
1542 len++;
1543 }
1545 return len;
1546 }
1548 static bool
1549 draw_view_line(struct view *view, unsigned int lineno)
1550 {
1551 struct line *line;
1552 bool selected = (view->offset + lineno == view->lineno);
1553 bool draw_ok;
1555 assert(view_is_displayed(view));
1557 if (view->offset + lineno >= view->lines)
1558 return FALSE;
1560 line = &view->line[view->offset + lineno];
1562 if (selected) {
1563 line->selected = TRUE;
1564 view->ops->select(view, line);
1565 } else if (line->selected) {
1566 line->selected = FALSE;
1567 wmove(view->win, lineno, 0);
1568 wclrtoeol(view->win);
1569 }
1571 scrollok(view->win, FALSE);
1572 draw_ok = view->ops->draw(view, line, lineno, selected);
1573 scrollok(view->win, TRUE);
1575 return draw_ok;
1576 }
1578 static void
1579 redraw_view_dirty(struct view *view)
1580 {
1581 bool dirty = FALSE;
1582 int lineno;
1584 for (lineno = 0; lineno < view->height; lineno++) {
1585 struct line *line = &view->line[view->offset + lineno];
1587 if (!line->dirty)
1588 continue;
1589 line->dirty = 0;
1590 dirty = TRUE;
1591 if (!draw_view_line(view, lineno))
1592 break;
1593 }
1595 if (!dirty)
1596 return;
1597 redrawwin(view->win);
1598 if (input_mode)
1599 wnoutrefresh(view->win);
1600 else
1601 wrefresh(view->win);
1602 }
1604 static void
1605 redraw_view_from(struct view *view, int lineno)
1606 {
1607 assert(0 <= lineno && lineno < view->height);
1609 for (; lineno < view->height; lineno++) {
1610 if (!draw_view_line(view, lineno))
1611 break;
1612 }
1614 redrawwin(view->win);
1615 if (input_mode)
1616 wnoutrefresh(view->win);
1617 else
1618 wrefresh(view->win);
1619 }
1621 static void
1622 redraw_view(struct view *view)
1623 {
1624 wclear(view->win);
1625 redraw_view_from(view, 0);
1626 }
1629 static void
1630 update_view_title(struct view *view)
1631 {
1632 char buf[SIZEOF_STR];
1633 char state[SIZEOF_STR];
1634 size_t bufpos = 0, statelen = 0;
1636 assert(view_is_displayed(view));
1638 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1639 unsigned int view_lines = view->offset + view->height;
1640 unsigned int lines = view->lines
1641 ? MIN(view_lines, view->lines) * 100 / view->lines
1642 : 0;
1644 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1645 view->ops->type,
1646 view->lineno + 1,
1647 view->lines,
1648 lines);
1650 if (view->pipe) {
1651 time_t secs = time(NULL) - view->start_time;
1653 /* Three git seconds are a long time ... */
1654 if (secs > 2)
1655 string_format_from(state, &statelen, " %lds", secs);
1656 }
1657 }
1659 string_format_from(buf, &bufpos, "[%s]", view->name);
1660 if (*view->ref && bufpos < view->width) {
1661 size_t refsize = strlen(view->ref);
1662 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1664 if (minsize < view->width)
1665 refsize = view->width - minsize + 7;
1666 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1667 }
1669 if (statelen && bufpos < view->width) {
1670 string_format_from(buf, &bufpos, " %s", state);
1671 }
1673 if (view == display[current_view])
1674 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1675 else
1676 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1678 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1679 wclrtoeol(view->title);
1680 wmove(view->title, 0, view->width - 1);
1682 if (input_mode)
1683 wnoutrefresh(view->title);
1684 else
1685 wrefresh(view->title);
1686 }
1688 static void
1689 resize_display(void)
1690 {
1691 int offset, i;
1692 struct view *base = display[0];
1693 struct view *view = display[1] ? display[1] : display[0];
1695 /* Setup window dimensions */
1697 getmaxyx(stdscr, base->height, base->width);
1699 /* Make room for the status window. */
1700 base->height -= 1;
1702 if (view != base) {
1703 /* Horizontal split. */
1704 view->width = base->width;
1705 view->height = SCALE_SPLIT_VIEW(base->height);
1706 base->height -= view->height;
1708 /* Make room for the title bar. */
1709 view->height -= 1;
1710 }
1712 /* Make room for the title bar. */
1713 base->height -= 1;
1715 offset = 0;
1717 foreach_displayed_view (view, i) {
1718 if (!view->win) {
1719 view->win = newwin(view->height, 0, offset, 0);
1720 if (!view->win)
1721 die("Failed to create %s view", view->name);
1723 scrollok(view->win, TRUE);
1725 view->title = newwin(1, 0, offset + view->height, 0);
1726 if (!view->title)
1727 die("Failed to create title window");
1729 } else {
1730 wresize(view->win, view->height, view->width);
1731 mvwin(view->win, offset, 0);
1732 mvwin(view->title, offset + view->height, 0);
1733 }
1735 offset += view->height + 1;
1736 }
1737 }
1739 static void
1740 redraw_display(void)
1741 {
1742 struct view *view;
1743 int i;
1745 foreach_displayed_view (view, i) {
1746 redraw_view(view);
1747 update_view_title(view);
1748 }
1749 }
1751 static void
1752 update_display_cursor(struct view *view)
1753 {
1754 /* Move the cursor to the right-most column of the cursor line.
1755 *
1756 * XXX: This could turn out to be a bit expensive, but it ensures that
1757 * the cursor does not jump around. */
1758 if (view->lines) {
1759 wmove(view->win, view->lineno - view->offset, view->width - 1);
1760 wrefresh(view->win);
1761 }
1762 }
1764 /*
1765 * Navigation
1766 */
1768 /* Scrolling backend */
1769 static void
1770 do_scroll_view(struct view *view, int lines)
1771 {
1772 bool redraw_current_line = FALSE;
1774 /* The rendering expects the new offset. */
1775 view->offset += lines;
1777 assert(0 <= view->offset && view->offset < view->lines);
1778 assert(lines);
1780 /* Move current line into the view. */
1781 if (view->lineno < view->offset) {
1782 view->lineno = view->offset;
1783 redraw_current_line = TRUE;
1784 } else if (view->lineno >= view->offset + view->height) {
1785 view->lineno = view->offset + view->height - 1;
1786 redraw_current_line = TRUE;
1787 }
1789 assert(view->offset <= view->lineno && view->lineno < view->lines);
1791 /* Redraw the whole screen if scrolling is pointless. */
1792 if (view->height < ABS(lines)) {
1793 redraw_view(view);
1795 } else {
1796 int line = lines > 0 ? view->height - lines : 0;
1797 int end = line + ABS(lines);
1799 wscrl(view->win, lines);
1801 for (; line < end; line++) {
1802 if (!draw_view_line(view, line))
1803 break;
1804 }
1806 if (redraw_current_line)
1807 draw_view_line(view, view->lineno - view->offset);
1808 }
1810 redrawwin(view->win);
1811 wrefresh(view->win);
1812 report("");
1813 }
1815 /* Scroll frontend */
1816 static void
1817 scroll_view(struct view *view, enum request request)
1818 {
1819 int lines = 1;
1821 assert(view_is_displayed(view));
1823 switch (request) {
1824 case REQ_SCROLL_PAGE_DOWN:
1825 lines = view->height;
1826 case REQ_SCROLL_LINE_DOWN:
1827 if (view->offset + lines > view->lines)
1828 lines = view->lines - view->offset;
1830 if (lines == 0 || view->offset + view->height >= view->lines) {
1831 report("Cannot scroll beyond the last line");
1832 return;
1833 }
1834 break;
1836 case REQ_SCROLL_PAGE_UP:
1837 lines = view->height;
1838 case REQ_SCROLL_LINE_UP:
1839 if (lines > view->offset)
1840 lines = view->offset;
1842 if (lines == 0) {
1843 report("Cannot scroll beyond the first line");
1844 return;
1845 }
1847 lines = -lines;
1848 break;
1850 default:
1851 die("request %d not handled in switch", request);
1852 }
1854 do_scroll_view(view, lines);
1855 }
1857 /* Cursor moving */
1858 static void
1859 move_view(struct view *view, enum request request)
1860 {
1861 int scroll_steps = 0;
1862 int steps;
1864 switch (request) {
1865 case REQ_MOVE_FIRST_LINE:
1866 steps = -view->lineno;
1867 break;
1869 case REQ_MOVE_LAST_LINE:
1870 steps = view->lines - view->lineno - 1;
1871 break;
1873 case REQ_MOVE_PAGE_UP:
1874 steps = view->height > view->lineno
1875 ? -view->lineno : -view->height;
1876 break;
1878 case REQ_MOVE_PAGE_DOWN:
1879 steps = view->lineno + view->height >= view->lines
1880 ? view->lines - view->lineno - 1 : view->height;
1881 break;
1883 case REQ_MOVE_UP:
1884 steps = -1;
1885 break;
1887 case REQ_MOVE_DOWN:
1888 steps = 1;
1889 break;
1891 default:
1892 die("request %d not handled in switch", request);
1893 }
1895 if (steps <= 0 && view->lineno == 0) {
1896 report("Cannot move beyond the first line");
1897 return;
1899 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
1900 report("Cannot move beyond the last line");
1901 return;
1902 }
1904 /* Move the current line */
1905 view->lineno += steps;
1906 assert(0 <= view->lineno && view->lineno < view->lines);
1908 /* Check whether the view needs to be scrolled */
1909 if (view->lineno < view->offset ||
1910 view->lineno >= view->offset + view->height) {
1911 scroll_steps = steps;
1912 if (steps < 0 && -steps > view->offset) {
1913 scroll_steps = -view->offset;
1915 } else if (steps > 0) {
1916 if (view->lineno == view->lines - 1 &&
1917 view->lines > view->height) {
1918 scroll_steps = view->lines - view->offset - 1;
1919 if (scroll_steps >= view->height)
1920 scroll_steps -= view->height - 1;
1921 }
1922 }
1923 }
1925 if (!view_is_displayed(view)) {
1926 view->offset += scroll_steps;
1927 assert(0 <= view->offset && view->offset < view->lines);
1928 view->ops->select(view, &view->line[view->lineno]);
1929 return;
1930 }
1932 /* Repaint the old "current" line if we be scrolling */
1933 if (ABS(steps) < view->height)
1934 draw_view_line(view, view->lineno - steps - view->offset);
1936 if (scroll_steps) {
1937 do_scroll_view(view, scroll_steps);
1938 return;
1939 }
1941 /* Draw the current line */
1942 draw_view_line(view, view->lineno - view->offset);
1944 redrawwin(view->win);
1945 wrefresh(view->win);
1946 report("");
1947 }
1950 /*
1951 * Searching
1952 */
1954 static void search_view(struct view *view, enum request request);
1956 static bool
1957 find_next_line(struct view *view, unsigned long lineno, struct line *line)
1958 {
1959 assert(view_is_displayed(view));
1961 if (!view->ops->grep(view, line))
1962 return FALSE;
1964 if (lineno - view->offset >= view->height) {
1965 view->offset = lineno;
1966 view->lineno = lineno;
1967 redraw_view(view);
1969 } else {
1970 unsigned long old_lineno = view->lineno - view->offset;
1972 view->lineno = lineno;
1973 draw_view_line(view, old_lineno);
1975 draw_view_line(view, view->lineno - view->offset);
1976 redrawwin(view->win);
1977 wrefresh(view->win);
1978 }
1980 report("Line %ld matches '%s'", lineno + 1, view->grep);
1981 return TRUE;
1982 }
1984 static void
1985 find_next(struct view *view, enum request request)
1986 {
1987 unsigned long lineno = view->lineno;
1988 int direction;
1990 if (!*view->grep) {
1991 if (!*opt_search)
1992 report("No previous search");
1993 else
1994 search_view(view, request);
1995 return;
1996 }
1998 switch (request) {
1999 case REQ_SEARCH:
2000 case REQ_FIND_NEXT:
2001 direction = 1;
2002 break;
2004 case REQ_SEARCH_BACK:
2005 case REQ_FIND_PREV:
2006 direction = -1;
2007 break;
2009 default:
2010 return;
2011 }
2013 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2014 lineno += direction;
2016 /* Note, lineno is unsigned long so will wrap around in which case it
2017 * will become bigger than view->lines. */
2018 for (; lineno < view->lines; lineno += direction) {
2019 struct line *line = &view->line[lineno];
2021 if (find_next_line(view, lineno, line))
2022 return;
2023 }
2025 report("No match found for '%s'", view->grep);
2026 }
2028 static void
2029 search_view(struct view *view, enum request request)
2030 {
2031 int regex_err;
2033 if (view->regex) {
2034 regfree(view->regex);
2035 *view->grep = 0;
2036 } else {
2037 view->regex = calloc(1, sizeof(*view->regex));
2038 if (!view->regex)
2039 return;
2040 }
2042 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2043 if (regex_err != 0) {
2044 char buf[SIZEOF_STR] = "unknown error";
2046 regerror(regex_err, view->regex, buf, sizeof(buf));
2047 report("Search failed: %s", buf);
2048 return;
2049 }
2051 string_copy(view->grep, opt_search);
2053 find_next(view, request);
2054 }
2056 /*
2057 * Incremental updating
2058 */
2060 static void
2061 end_update(struct view *view)
2062 {
2063 if (!view->pipe)
2064 return;
2065 set_nonblocking_input(FALSE);
2066 if (view->pipe == stdin)
2067 fclose(view->pipe);
2068 else
2069 pclose(view->pipe);
2070 view->pipe = NULL;
2071 }
2073 static bool
2074 begin_update(struct view *view)
2075 {
2076 if (view->pipe)
2077 end_update(view);
2079 if (opt_cmd[0]) {
2080 string_copy(view->cmd, opt_cmd);
2081 opt_cmd[0] = 0;
2082 /* When running random commands, initially show the
2083 * command in the title. However, it maybe later be
2084 * overwritten if a commit line is selected. */
2085 if (view == VIEW(REQ_VIEW_PAGER))
2086 string_copy(view->ref, view->cmd);
2087 else
2088 view->ref[0] = 0;
2090 } else if (view == VIEW(REQ_VIEW_TREE)) {
2091 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2092 char path[SIZEOF_STR];
2094 if (strcmp(view->vid, view->id))
2095 opt_path[0] = path[0] = 0;
2096 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
2097 return FALSE;
2099 if (!string_format(view->cmd, format, view->id, path))
2100 return FALSE;
2102 } else {
2103 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2104 const char *id = view->id;
2106 if (!string_format(view->cmd, format, id, id, id, id, id))
2107 return FALSE;
2109 /* Put the current ref_* value to the view title ref
2110 * member. This is needed by the blob view. Most other
2111 * views sets it automatically after loading because the
2112 * first line is a commit line. */
2113 string_copy_rev(view->ref, view->id);
2114 }
2116 /* Special case for the pager view. */
2117 if (opt_pipe) {
2118 view->pipe = opt_pipe;
2119 opt_pipe = NULL;
2120 } else {
2121 view->pipe = popen(view->cmd, "r");
2122 }
2124 if (!view->pipe)
2125 return FALSE;
2127 set_nonblocking_input(TRUE);
2129 view->offset = 0;
2130 view->lines = 0;
2131 view->lineno = 0;
2132 string_copy_rev(view->vid, view->id);
2134 if (view->line) {
2135 int i;
2137 for (i = 0; i < view->lines; i++)
2138 if (view->line[i].data)
2139 free(view->line[i].data);
2141 free(view->line);
2142 view->line = NULL;
2143 }
2145 view->start_time = time(NULL);
2147 return TRUE;
2148 }
2150 #define ITEM_CHUNK_SIZE 256
2151 static void *
2152 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2153 {
2154 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2155 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2157 if (mem == NULL || num_chunks != num_chunks_new) {
2158 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2159 mem = realloc(mem, *size * item_size);
2160 }
2162 return mem;
2163 }
2165 static struct line *
2166 realloc_lines(struct view *view, size_t line_size)
2167 {
2168 size_t alloc = view->line_alloc;
2169 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2170 sizeof(*view->line));
2172 if (!tmp)
2173 return NULL;
2175 view->line = tmp;
2176 view->line_alloc = alloc;
2177 view->line_size = line_size;
2178 return view->line;
2179 }
2181 static bool
2182 update_view(struct view *view)
2183 {
2184 char in_buffer[BUFSIZ];
2185 char out_buffer[BUFSIZ * 2];
2186 char *line;
2187 /* The number of lines to read. If too low it will cause too much
2188 * redrawing (and possible flickering), if too high responsiveness
2189 * will suffer. */
2190 unsigned long lines = view->height;
2191 int redraw_from = -1;
2193 if (!view->pipe)
2194 return TRUE;
2196 /* Only redraw if lines are visible. */
2197 if (view->offset + view->height >= view->lines)
2198 redraw_from = view->lines - view->offset;
2200 /* FIXME: This is probably not perfect for backgrounded views. */
2201 if (!realloc_lines(view, view->lines + lines))
2202 goto alloc_error;
2204 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
2205 size_t linelen = strlen(line);
2207 if (linelen)
2208 line[linelen - 1] = 0;
2210 if (opt_iconv != ICONV_NONE) {
2211 ICONV_CONST char *inbuf = line;
2212 size_t inlen = linelen;
2214 char *outbuf = out_buffer;
2215 size_t outlen = sizeof(out_buffer);
2217 size_t ret;
2219 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2220 if (ret != (size_t) -1) {
2221 line = out_buffer;
2222 linelen = strlen(out_buffer);
2223 }
2224 }
2226 if (!view->ops->read(view, line))
2227 goto alloc_error;
2229 if (lines-- == 1)
2230 break;
2231 }
2233 {
2234 int digits;
2236 lines = view->lines;
2237 for (digits = 0; lines; digits++)
2238 lines /= 10;
2240 /* Keep the displayed view in sync with line number scaling. */
2241 if (digits != view->digits) {
2242 view->digits = digits;
2243 redraw_from = 0;
2244 }
2245 }
2247 if (!view_is_displayed(view))
2248 goto check_pipe;
2250 if (view == VIEW(REQ_VIEW_TREE)) {
2251 /* Clear the view and redraw everything since the tree sorting
2252 * might have rearranged things. */
2253 redraw_view(view);
2256 } else if (redraw_from >= 0) {
2257 /* If this is an incremental update, redraw the previous line
2258 * since for commits some members could have changed when
2259 * loading the main view. */
2260 if (redraw_from > 0)
2261 redraw_from--;
2263 /* Since revision graph visualization requires knowledge
2264 * about the parent commit, it causes a further one-off
2265 * needed to be redrawn for incremental updates. */
2266 if (redraw_from > 0 && opt_rev_graph)
2267 redraw_from--;
2269 /* Incrementally draw avoids flickering. */
2270 redraw_view_from(view, redraw_from);
2271 }
2273 if (view == VIEW(REQ_VIEW_BLAME))
2274 redraw_view_dirty(view);
2276 /* Update the title _after_ the redraw so that if the redraw picks up a
2277 * commit reference in view->ref it'll be available here. */
2278 update_view_title(view);
2280 check_pipe:
2281 if (ferror(view->pipe)) {
2282 report("Failed to read: %s", strerror(errno));
2283 goto end;
2285 } else if (feof(view->pipe)) {
2286 report("");
2287 goto end;
2288 }
2290 return TRUE;
2292 alloc_error:
2293 report("Allocation failure");
2295 end:
2296 if (view->ops->read(view, NULL))
2297 end_update(view);
2298 return FALSE;
2299 }
2301 static struct line *
2302 add_line_data(struct view *view, void *data, enum line_type type)
2303 {
2304 struct line *line = &view->line[view->lines++];
2306 memset(line, 0, sizeof(*line));
2307 line->type = type;
2308 line->data = data;
2310 return line;
2311 }
2313 static struct line *
2314 add_line_text(struct view *view, char *data, enum line_type type)
2315 {
2316 if (data)
2317 data = strdup(data);
2319 return data ? add_line_data(view, data, type) : NULL;
2320 }
2323 /*
2324 * View opening
2325 */
2327 enum open_flags {
2328 OPEN_DEFAULT = 0, /* Use default view switching. */
2329 OPEN_SPLIT = 1, /* Split current view. */
2330 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2331 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2332 };
2334 static void
2335 open_view(struct view *prev, enum request request, enum open_flags flags)
2336 {
2337 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2338 bool split = !!(flags & OPEN_SPLIT);
2339 bool reload = !!(flags & OPEN_RELOAD);
2340 struct view *view = VIEW(request);
2341 int nviews = displayed_views();
2342 struct view *base_view = display[0];
2344 if (view == prev && nviews == 1 && !reload) {
2345 report("Already in %s view", view->name);
2346 return;
2347 }
2349 if (view->ops->open) {
2350 if (!view->ops->open(view)) {
2351 report("Failed to load %s view", view->name);
2352 return;
2353 }
2355 } else if ((reload || strcmp(view->vid, view->id)) &&
2356 !begin_update(view)) {
2357 report("Failed to load %s view", view->name);
2358 return;
2359 }
2361 if (split) {
2362 display[1] = view;
2363 if (!backgrounded)
2364 current_view = 1;
2365 } else {
2366 /* Maximize the current view. */
2367 memset(display, 0, sizeof(display));
2368 current_view = 0;
2369 display[current_view] = view;
2370 }
2372 /* Resize the view when switching between split- and full-screen,
2373 * or when switching between two different full-screen views. */
2374 if (nviews != displayed_views() ||
2375 (nviews == 1 && base_view != display[0]))
2376 resize_display();
2378 if (split && prev->lineno - prev->offset >= prev->height) {
2379 /* Take the title line into account. */
2380 int lines = prev->lineno - prev->offset - prev->height + 1;
2382 /* Scroll the view that was split if the current line is
2383 * outside the new limited view. */
2384 do_scroll_view(prev, lines);
2385 }
2387 if (prev && view != prev) {
2388 if (split && !backgrounded) {
2389 /* "Blur" the previous view. */
2390 update_view_title(prev);
2391 }
2393 view->parent = prev;
2394 }
2396 if (view->pipe && view->lines == 0) {
2397 /* Clear the old view and let the incremental updating refill
2398 * the screen. */
2399 wclear(view->win);
2400 report("");
2401 } else {
2402 redraw_view(view);
2403 report("");
2404 }
2406 /* If the view is backgrounded the above calls to report()
2407 * won't redraw the view title. */
2408 if (backgrounded)
2409 update_view_title(view);
2410 }
2412 static void
2413 open_external_viewer(const char *cmd)
2414 {
2415 def_prog_mode(); /* save current tty modes */
2416 endwin(); /* restore original tty modes */
2417 system(cmd);
2418 fprintf(stderr, "Press Enter to continue");
2419 getc(stdin);
2420 reset_prog_mode();
2421 redraw_display();
2422 }
2424 static void
2425 open_mergetool(const char *file)
2426 {
2427 char cmd[SIZEOF_STR];
2428 char file_sq[SIZEOF_STR];
2430 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2431 string_format(cmd, "git mergetool %s", file_sq)) {
2432 open_external_viewer(cmd);
2433 }
2434 }
2436 static void
2437 open_editor(bool from_root, const char *file)
2438 {
2439 char cmd[SIZEOF_STR];
2440 char file_sq[SIZEOF_STR];
2441 char *editor;
2442 char *prefix = from_root ? opt_cdup : "";
2444 editor = getenv("GIT_EDITOR");
2445 if (!editor && *opt_editor)
2446 editor = opt_editor;
2447 if (!editor)
2448 editor = getenv("VISUAL");
2449 if (!editor)
2450 editor = getenv("EDITOR");
2451 if (!editor)
2452 editor = "vi";
2454 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2455 string_format(cmd, "%s %s%s", editor, prefix, file_sq)) {
2456 open_external_viewer(cmd);
2457 }
2458 }
2460 static void
2461 open_run_request(enum request request)
2462 {
2463 struct run_request *req = get_run_request(request);
2464 char buf[SIZEOF_STR * 2];
2465 size_t bufpos;
2466 char *cmd;
2468 if (!req) {
2469 report("Unknown run request");
2470 return;
2471 }
2473 bufpos = 0;
2474 cmd = req->cmd;
2476 while (cmd) {
2477 char *next = strstr(cmd, "%(");
2478 int len = next - cmd;
2479 char *value;
2481 if (!next) {
2482 len = strlen(cmd);
2483 value = "";
2485 } else if (!strncmp(next, "%(head)", 7)) {
2486 value = ref_head;
2488 } else if (!strncmp(next, "%(commit)", 9)) {
2489 value = ref_commit;
2491 } else if (!strncmp(next, "%(blob)", 7)) {
2492 value = ref_blob;
2494 } else {
2495 report("Unknown replacement in run request: `%s`", req->cmd);
2496 return;
2497 }
2499 if (!string_format_from(buf, &bufpos, "%.*s%s", len, cmd, value))
2500 return;
2502 if (next)
2503 next = strchr(next, ')') + 1;
2504 cmd = next;
2505 }
2507 open_external_viewer(buf);
2508 }
2510 /*
2511 * User request switch noodle
2512 */
2514 static int
2515 view_driver(struct view *view, enum request request)
2516 {
2517 int i;
2519 if (request == REQ_NONE) {
2520 doupdate();
2521 return TRUE;
2522 }
2524 if (request > REQ_NONE) {
2525 open_run_request(request);
2526 return TRUE;
2527 }
2529 if (view && view->lines) {
2530 request = view->ops->request(view, request, &view->line[view->lineno]);
2531 if (request == REQ_NONE)
2532 return TRUE;
2533 }
2535 switch (request) {
2536 case REQ_MOVE_UP:
2537 case REQ_MOVE_DOWN:
2538 case REQ_MOVE_PAGE_UP:
2539 case REQ_MOVE_PAGE_DOWN:
2540 case REQ_MOVE_FIRST_LINE:
2541 case REQ_MOVE_LAST_LINE:
2542 move_view(view, request);
2543 break;
2545 case REQ_SCROLL_LINE_DOWN:
2546 case REQ_SCROLL_LINE_UP:
2547 case REQ_SCROLL_PAGE_DOWN:
2548 case REQ_SCROLL_PAGE_UP:
2549 scroll_view(view, request);
2550 break;
2552 case REQ_VIEW_BLAME:
2553 if (!opt_path[0]) {
2554 report("No file chosen, press %s to open tree view",
2555 get_key(REQ_VIEW_TREE));
2556 break;
2557 }
2558 if (opt_path[strlen(opt_path) - 1] == '/') {
2559 report("Cannot show blame for directory %s", opt_path);
2560 break;
2561 }
2562 string_copy(opt_ref, ref_commit);
2563 open_view(view, request, OPEN_DEFAULT);
2564 break;
2566 case REQ_VIEW_BLOB:
2567 if (!ref_blob[0]) {
2568 report("No file chosen, press %s to open tree view",
2569 get_key(REQ_VIEW_TREE));
2570 break;
2571 }
2572 open_view(view, request, OPEN_DEFAULT);
2573 break;
2575 case REQ_VIEW_PAGER:
2576 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2577 report("No pager content, press %s to run command from prompt",
2578 get_key(REQ_PROMPT));
2579 break;
2580 }
2581 open_view(view, request, OPEN_DEFAULT);
2582 break;
2584 case REQ_VIEW_STAGE:
2585 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2586 report("No stage content, press %s to open the status view and choose file",
2587 get_key(REQ_VIEW_STATUS));
2588 break;
2589 }
2590 open_view(view, request, OPEN_DEFAULT);
2591 break;
2593 case REQ_VIEW_STATUS:
2594 if (opt_is_inside_work_tree == FALSE) {
2595 report("The status view requires a working tree");
2596 break;
2597 }
2598 open_view(view, request, OPEN_DEFAULT);
2599 break;
2601 case REQ_VIEW_MAIN:
2602 case REQ_VIEW_DIFF:
2603 case REQ_VIEW_LOG:
2604 case REQ_VIEW_TREE:
2605 case REQ_VIEW_HELP:
2606 open_view(view, request, OPEN_DEFAULT);
2607 break;
2609 case REQ_NEXT:
2610 case REQ_PREVIOUS:
2611 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2613 if ((view == VIEW(REQ_VIEW_DIFF) &&
2614 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2615 (view == VIEW(REQ_VIEW_DIFF) &&
2616 view->parent == VIEW(REQ_VIEW_BLAME)) ||
2617 (view == VIEW(REQ_VIEW_STAGE) &&
2618 view->parent == VIEW(REQ_VIEW_STATUS)) ||
2619 (view == VIEW(REQ_VIEW_BLOB) &&
2620 view->parent == VIEW(REQ_VIEW_TREE))) {
2621 int line;
2623 view = view->parent;
2624 line = view->lineno;
2625 move_view(view, request);
2626 if (view_is_displayed(view))
2627 update_view_title(view);
2628 if (line != view->lineno)
2629 view->ops->request(view, REQ_ENTER,
2630 &view->line[view->lineno]);
2632 } else {
2633 move_view(view, request);
2634 }
2635 break;
2637 case REQ_VIEW_NEXT:
2638 {
2639 int nviews = displayed_views();
2640 int next_view = (current_view + 1) % nviews;
2642 if (next_view == current_view) {
2643 report("Only one view is displayed");
2644 break;
2645 }
2647 current_view = next_view;
2648 /* Blur out the title of the previous view. */
2649 update_view_title(view);
2650 report("");
2651 break;
2652 }
2653 case REQ_REFRESH:
2654 report("Refreshing is not yet supported for the %s view", view->name);
2655 break;
2657 case REQ_TOGGLE_LINENO:
2658 opt_line_number = !opt_line_number;
2659 redraw_display();
2660 break;
2662 case REQ_TOGGLE_DATE:
2663 opt_date = !opt_date;
2664 redraw_display();
2665 break;
2667 case REQ_TOGGLE_AUTHOR:
2668 opt_author = !opt_author;
2669 redraw_display();
2670 break;
2672 case REQ_TOGGLE_REV_GRAPH:
2673 opt_rev_graph = !opt_rev_graph;
2674 redraw_display();
2675 break;
2677 case REQ_TOGGLE_REFS:
2678 opt_show_refs = !opt_show_refs;
2679 redraw_display();
2680 break;
2682 case REQ_PROMPT:
2683 /* Always reload^Wrerun commands from the prompt. */
2684 open_view(view, opt_request, OPEN_RELOAD);
2685 break;
2687 case REQ_SEARCH:
2688 case REQ_SEARCH_BACK:
2689 search_view(view, request);
2690 break;
2692 case REQ_FIND_NEXT:
2693 case REQ_FIND_PREV:
2694 find_next(view, request);
2695 break;
2697 case REQ_STOP_LOADING:
2698 for (i = 0; i < ARRAY_SIZE(views); i++) {
2699 view = &views[i];
2700 if (view->pipe)
2701 report("Stopped loading the %s view", view->name),
2702 end_update(view);
2703 }
2704 break;
2706 case REQ_SHOW_VERSION:
2707 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
2708 return TRUE;
2710 case REQ_SCREEN_RESIZE:
2711 resize_display();
2712 /* Fall-through */
2713 case REQ_SCREEN_REDRAW:
2714 redraw_display();
2715 break;
2717 case REQ_EDIT:
2718 report("Nothing to edit");
2719 break;
2722 case REQ_ENTER:
2723 report("Nothing to enter");
2724 break;
2727 case REQ_VIEW_CLOSE:
2728 /* XXX: Mark closed views by letting view->parent point to the
2729 * view itself. Parents to closed view should never be
2730 * followed. */
2731 if (view->parent &&
2732 view->parent->parent != view->parent) {
2733 memset(display, 0, sizeof(display));
2734 current_view = 0;
2735 display[current_view] = view->parent;
2736 view->parent = view;
2737 resize_display();
2738 redraw_display();
2739 break;
2740 }
2741 /* Fall-through */
2742 case REQ_QUIT:
2743 return FALSE;
2745 default:
2746 /* An unknown key will show most commonly used commands. */
2747 report("Unknown key, press 'h' for help");
2748 return TRUE;
2749 }
2751 return TRUE;
2752 }
2755 /*
2756 * Pager backend
2757 */
2759 static bool
2760 pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
2761 {
2762 char *text = line->data;
2763 enum line_type type = line->type;
2764 int attr;
2766 wmove(view->win, lineno, 0);
2768 if (selected) {
2769 type = LINE_CURSOR;
2770 wchgat(view->win, -1, 0, type, NULL);
2771 }
2773 attr = get_line_attr(type);
2774 wattrset(view->win, attr);
2776 if (opt_line_number || opt_tab_size < TABSIZE) {
2777 static char spaces[] = " ";
2778 int col_offset = 0, col = 0;
2780 if (opt_line_number) {
2781 unsigned long real_lineno = view->offset + lineno + 1;
2783 if (real_lineno == 1 ||
2784 (real_lineno % opt_num_interval) == 0) {
2785 wprintw(view->win, "%.*d", view->digits, real_lineno);
2787 } else {
2788 waddnstr(view->win, spaces,
2789 MIN(view->digits, STRING_SIZE(spaces)));
2790 }
2791 waddstr(view->win, ": ");
2792 col_offset = view->digits + 2;
2793 }
2795 while (text && col_offset + col < view->width) {
2796 int cols_max = view->width - col_offset - col;
2797 char *pos = text;
2798 int cols;
2800 if (*text == '\t') {
2801 text++;
2802 assert(sizeof(spaces) > TABSIZE);
2803 pos = spaces;
2804 cols = opt_tab_size - (col % opt_tab_size);
2806 } else {
2807 text = strchr(text, '\t');
2808 cols = line ? text - pos : strlen(pos);
2809 }
2811 waddnstr(view->win, pos, MIN(cols, cols_max));
2812 col += cols;
2813 }
2815 } else {
2816 int tilde_attr = get_line_attr(LINE_MAIN_DELIM);
2818 draw_text(view, text, view->width, TRUE, tilde_attr);
2819 }
2821 return TRUE;
2822 }
2824 static bool
2825 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2826 {
2827 char refbuf[SIZEOF_STR];
2828 char *ref = NULL;
2829 FILE *pipe;
2831 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2832 return TRUE;
2834 pipe = popen(refbuf, "r");
2835 if (!pipe)
2836 return TRUE;
2838 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2839 ref = chomp_string(ref);
2840 pclose(pipe);
2842 if (!ref || !*ref)
2843 return TRUE;
2845 /* This is the only fatal call, since it can "corrupt" the buffer. */
2846 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2847 return FALSE;
2849 return TRUE;
2850 }
2852 static void
2853 add_pager_refs(struct view *view, struct line *line)
2854 {
2855 char buf[SIZEOF_STR];
2856 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
2857 struct ref **refs;
2858 size_t bufpos = 0, refpos = 0;
2859 const char *sep = "Refs: ";
2860 bool is_tag = FALSE;
2862 assert(line->type == LINE_COMMIT);
2864 refs = get_refs(commit_id);
2865 if (!refs) {
2866 if (view == VIEW(REQ_VIEW_DIFF))
2867 goto try_add_describe_ref;
2868 return;
2869 }
2871 do {
2872 struct ref *ref = refs[refpos];
2873 char *fmt = ref->tag ? "%s[%s]" :
2874 ref->remote ? "%s<%s>" : "%s%s";
2876 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2877 return;
2878 sep = ", ";
2879 if (ref->tag)
2880 is_tag = TRUE;
2881 } while (refs[refpos++]->next);
2883 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2884 try_add_describe_ref:
2885 /* Add <tag>-g<commit_id> "fake" reference. */
2886 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2887 return;
2888 }
2890 if (bufpos == 0)
2891 return;
2893 if (!realloc_lines(view, view->line_size + 1))
2894 return;
2896 add_line_text(view, buf, LINE_PP_REFS);
2897 }
2899 static bool
2900 pager_read(struct view *view, char *data)
2901 {
2902 struct line *line;
2904 if (!data)
2905 return TRUE;
2907 line = add_line_text(view, data, get_line_type(data));
2908 if (!line)
2909 return FALSE;
2911 if (line->type == LINE_COMMIT &&
2912 (view == VIEW(REQ_VIEW_DIFF) ||
2913 view == VIEW(REQ_VIEW_LOG)))
2914 add_pager_refs(view, line);
2916 return TRUE;
2917 }
2919 static enum request
2920 pager_request(struct view *view, enum request request, struct line *line)
2921 {
2922 int split = 0;
2924 if (request != REQ_ENTER)
2925 return request;
2927 if (line->type == LINE_COMMIT &&
2928 (view == VIEW(REQ_VIEW_LOG) ||
2929 view == VIEW(REQ_VIEW_PAGER))) {
2930 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2931 split = 1;
2932 }
2934 /* Always scroll the view even if it was split. That way
2935 * you can use Enter to scroll through the log view and
2936 * split open each commit diff. */
2937 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2939 /* FIXME: A minor workaround. Scrolling the view will call report("")
2940 * but if we are scrolling a non-current view this won't properly
2941 * update the view title. */
2942 if (split)
2943 update_view_title(view);
2945 return REQ_NONE;
2946 }
2948 static bool
2949 pager_grep(struct view *view, struct line *line)
2950 {
2951 regmatch_t pmatch;
2952 char *text = line->data;
2954 if (!*text)
2955 return FALSE;
2957 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
2958 return FALSE;
2960 return TRUE;
2961 }
2963 static void
2964 pager_select(struct view *view, struct line *line)
2965 {
2966 if (line->type == LINE_COMMIT) {
2967 char *text = (char *)line->data + STRING_SIZE("commit ");
2969 if (view != VIEW(REQ_VIEW_PAGER))
2970 string_copy_rev(view->ref, text);
2971 string_copy_rev(ref_commit, text);
2972 }
2973 }
2975 static struct view_ops pager_ops = {
2976 "line",
2977 NULL,
2978 pager_read,
2979 pager_draw,
2980 pager_request,
2981 pager_grep,
2982 pager_select,
2983 };
2986 /*
2987 * Help backend
2988 */
2990 static bool
2991 help_open(struct view *view)
2992 {
2993 char buf[BUFSIZ];
2994 int lines = ARRAY_SIZE(req_info) + 2;
2995 int i;
2997 if (view->lines > 0)
2998 return TRUE;
3000 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3001 if (!req_info[i].request)
3002 lines++;
3004 lines += run_requests + 1;
3006 view->line = calloc(lines, sizeof(*view->line));
3007 if (!view->line)
3008 return FALSE;
3010 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3012 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3013 char *key;
3015 if (req_info[i].request == REQ_NONE)
3016 continue;
3018 if (!req_info[i].request) {
3019 add_line_text(view, "", LINE_DEFAULT);
3020 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3021 continue;
3022 }
3024 key = get_key(req_info[i].request);
3025 if (!*key)
3026 key = "(no key defined)";
3028 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
3029 continue;
3031 add_line_text(view, buf, LINE_DEFAULT);
3032 }
3034 if (run_requests) {
3035 add_line_text(view, "", LINE_DEFAULT);
3036 add_line_text(view, "External commands:", LINE_DEFAULT);
3037 }
3039 for (i = 0; i < run_requests; i++) {
3040 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3041 char *key;
3043 if (!req)
3044 continue;
3046 key = get_key_name(req->key);
3047 if (!*key)
3048 key = "(no key defined)";
3050 if (!string_format(buf, " %-10s %-14s `%s`",
3051 keymap_table[req->keymap].name,
3052 key, req->cmd))
3053 continue;
3055 add_line_text(view, buf, LINE_DEFAULT);
3056 }
3058 return TRUE;
3059 }
3061 static struct view_ops help_ops = {
3062 "line",
3063 help_open,
3064 NULL,
3065 pager_draw,
3066 pager_request,
3067 pager_grep,
3068 pager_select,
3069 };
3072 /*
3073 * Tree backend
3074 */
3076 struct tree_stack_entry {
3077 struct tree_stack_entry *prev; /* Entry below this in the stack */
3078 unsigned long lineno; /* Line number to restore */
3079 char *name; /* Position of name in opt_path */
3080 };
3082 /* The top of the path stack. */
3083 static struct tree_stack_entry *tree_stack = NULL;
3084 unsigned long tree_lineno = 0;
3086 static void
3087 pop_tree_stack_entry(void)
3088 {
3089 struct tree_stack_entry *entry = tree_stack;
3091 tree_lineno = entry->lineno;
3092 entry->name[0] = 0;
3093 tree_stack = entry->prev;
3094 free(entry);
3095 }
3097 static void
3098 push_tree_stack_entry(char *name, unsigned long lineno)
3099 {
3100 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3101 size_t pathlen = strlen(opt_path);
3103 if (!entry)
3104 return;
3106 entry->prev = tree_stack;
3107 entry->name = opt_path + pathlen;
3108 tree_stack = entry;
3110 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3111 pop_tree_stack_entry();
3112 return;
3113 }
3115 /* Move the current line to the first tree entry. */
3116 tree_lineno = 1;
3117 entry->lineno = lineno;
3118 }
3120 /* Parse output from git-ls-tree(1):
3121 *
3122 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3123 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3124 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3125 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3126 */
3128 #define SIZEOF_TREE_ATTR \
3129 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3131 #define TREE_UP_FORMAT "040000 tree %s\t.."
3133 static int
3134 tree_compare_entry(enum line_type type1, char *name1,
3135 enum line_type type2, char *name2)
3136 {
3137 if (type1 != type2) {
3138 if (type1 == LINE_TREE_DIR)
3139 return -1;
3140 return 1;
3141 }
3143 return strcmp(name1, name2);
3144 }
3146 static bool
3147 tree_read(struct view *view, char *text)
3148 {
3149 size_t textlen = text ? strlen(text) : 0;
3150 char buf[SIZEOF_STR];
3151 unsigned long pos;
3152 enum line_type type;
3153 bool first_read = view->lines == 0;
3155 if (!text)
3156 return TRUE;
3157 if (textlen <= SIZEOF_TREE_ATTR)
3158 return FALSE;
3160 type = text[STRING_SIZE("100644 ")] == 't'
3161 ? LINE_TREE_DIR : LINE_TREE_FILE;
3163 if (first_read) {
3164 /* Add path info line */
3165 if (!string_format(buf, "Directory path /%s", opt_path) ||
3166 !realloc_lines(view, view->line_size + 1) ||
3167 !add_line_text(view, buf, LINE_DEFAULT))
3168 return FALSE;
3170 /* Insert "link" to parent directory. */
3171 if (*opt_path) {
3172 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
3173 !realloc_lines(view, view->line_size + 1) ||
3174 !add_line_text(view, buf, LINE_TREE_DIR))
3175 return FALSE;
3176 }
3177 }
3179 /* Strip the path part ... */
3180 if (*opt_path) {
3181 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3182 size_t striplen = strlen(opt_path);
3183 char *path = text + SIZEOF_TREE_ATTR;
3185 if (pathlen > striplen)
3186 memmove(path, path + striplen,
3187 pathlen - striplen + 1);
3188 }
3190 /* Skip "Directory ..." and ".." line. */
3191 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
3192 struct line *line = &view->line[pos];
3193 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
3194 char *path2 = text + SIZEOF_TREE_ATTR;
3195 int cmp = tree_compare_entry(line->type, path1, type, path2);
3197 if (cmp <= 0)
3198 continue;
3200 text = strdup(text);
3201 if (!text)
3202 return FALSE;
3204 if (view->lines > pos)
3205 memmove(&view->line[pos + 1], &view->line[pos],
3206 (view->lines - pos) * sizeof(*line));
3208 line = &view->line[pos];
3209 line->data = text;
3210 line->type = type;
3211 view->lines++;
3212 return TRUE;
3213 }
3215 if (!add_line_text(view, text, type))
3216 return FALSE;
3218 if (tree_lineno > view->lineno) {
3219 view->lineno = tree_lineno;
3220 tree_lineno = 0;
3221 }
3223 return TRUE;
3224 }
3226 static enum request
3227 tree_request(struct view *view, enum request request, struct line *line)
3228 {
3229 enum open_flags flags;
3231 if (request == REQ_TREE_PARENT) {
3232 if (*opt_path) {
3233 /* fake 'cd ..' */
3234 request = REQ_ENTER;
3235 line = &view->line[1];
3236 } else {
3237 /* quit view if at top of tree */
3238 return REQ_VIEW_CLOSE;
3239 }
3240 }
3241 if (request != REQ_ENTER)
3242 return request;
3244 /* Cleanup the stack if the tree view is at a different tree. */
3245 while (!*opt_path && tree_stack)
3246 pop_tree_stack_entry();
3248 switch (line->type) {
3249 case LINE_TREE_DIR:
3250 /* Depending on whether it is a subdir or parent (updir?) link
3251 * mangle the path buffer. */
3252 if (line == &view->line[1] && *opt_path) {
3253 pop_tree_stack_entry();
3255 } else {
3256 char *data = line->data;
3257 char *basename = data + SIZEOF_TREE_ATTR;
3259 push_tree_stack_entry(basename, view->lineno);
3260 }
3262 /* Trees and subtrees share the same ID, so they are not not
3263 * unique like blobs. */
3264 flags = OPEN_RELOAD;
3265 request = REQ_VIEW_TREE;
3266 break;
3268 case LINE_TREE_FILE:
3269 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3270 request = REQ_VIEW_BLOB;
3271 break;
3273 default:
3274 return TRUE;
3275 }
3277 open_view(view, request, flags);
3278 if (request == REQ_VIEW_TREE) {
3279 view->lineno = tree_lineno;
3280 }
3282 return REQ_NONE;
3283 }
3285 static void
3286 tree_select(struct view *view, struct line *line)
3287 {
3288 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3290 if (line->type == LINE_TREE_FILE) {
3291 string_copy_rev(ref_blob, text);
3293 } else if (line->type != LINE_TREE_DIR) {
3294 return;
3295 }
3297 string_copy_rev(view->ref, text);
3298 }
3300 static struct view_ops tree_ops = {
3301 "file",
3302 NULL,
3303 tree_read,
3304 pager_draw,
3305 tree_request,
3306 pager_grep,
3307 tree_select,
3308 };
3310 static bool
3311 blob_read(struct view *view, char *line)
3312 {
3313 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3314 }
3316 static struct view_ops blob_ops = {
3317 "line",
3318 NULL,
3319 blob_read,
3320 pager_draw,
3321 pager_request,
3322 pager_grep,
3323 pager_select,
3324 };
3326 /*
3327 * Blame backend
3328 *
3329 * Loading the blame view is a two phase job:
3330 *
3331 * 1. File content is read either using opt_path from the
3332 * filesystem or using git-cat-file.
3333 * 2. Then blame information is incrementally added by
3334 * reading output from git-blame.
3335 */
3337 struct blame_commit {
3338 char id[SIZEOF_REV]; /* SHA1 ID. */
3339 char title[128]; /* First line of the commit message. */
3340 char author[75]; /* Author of the commit. */
3341 struct tm time; /* Date from the author ident. */
3342 char filename[128]; /* Name of file. */
3343 };
3345 struct blame {
3346 struct blame_commit *commit;
3347 unsigned int header:1;
3348 char text[1];
3349 };
3351 #define BLAME_CAT_FILE_CMD "git cat-file blob %s:%s"
3352 #define BLAME_INCREMENTAL_CMD "git blame --incremental %s %s"
3354 static bool
3355 blame_open(struct view *view)
3356 {
3357 char path[SIZEOF_STR];
3358 char ref[SIZEOF_STR] = "";
3360 if (sq_quote(path, 0, opt_path) >= sizeof(path))
3361 return FALSE;
3363 if (*opt_ref && sq_quote(ref, 0, opt_ref) >= sizeof(ref))
3364 return FALSE;
3366 if (*opt_ref) {
3367 if (!string_format(view->cmd, BLAME_CAT_FILE_CMD, ref, path))
3368 return FALSE;
3369 } else {
3370 view->pipe = fopen(opt_path, "r");
3371 if (!view->pipe &&
3372 !string_format(view->cmd, BLAME_CAT_FILE_CMD, "HEAD", path))
3373 return FALSE;
3374 }
3376 if (!view->pipe)
3377 view->pipe = popen(view->cmd, "r");
3378 if (!view->pipe)
3379 return FALSE;
3381 if (!string_format(view->cmd, BLAME_INCREMENTAL_CMD, ref, path))
3382 return FALSE;
3384 string_format(view->ref, "%s ...", opt_path);
3385 string_copy_rev(view->vid, opt_path);
3386 set_nonblocking_input(TRUE);
3388 if (view->line) {
3389 int i;
3391 for (i = 0; i < view->lines; i++)
3392 free(view->line[i].data);
3393 free(view->line);
3394 }
3396 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
3397 view->offset = view->lines = view->lineno = 0;
3398 view->line = NULL;
3399 view->start_time = time(NULL);
3400 }
3402 static struct blame_commit *
3403 get_blame_commit(struct view *view, const char *id)
3404 {
3405 size_t i;
3407 for (i = 0; i < view->lines; i++) {
3408 struct blame *blame = view->line[i].data;
3410 if (!blame->commit)
3411 continue;
3413 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3414 return blame->commit;
3415 }
3417 {
3418 struct blame_commit *commit = calloc(1, sizeof(*commit));
3420 if (commit)
3421 string_ncopy(commit->id, id, SIZEOF_REV);
3422 return commit;
3423 }
3424 }
3426 static bool
3427 parse_number(char **posref, size_t *number, size_t min, size_t max)
3428 {
3429 char *pos = *posref;
3431 *posref = NULL;
3432 pos = strchr(pos + 1, ' ');
3433 if (!pos || !isdigit(pos[1]))
3434 return FALSE;
3435 *number = atoi(pos + 1);
3436 if (*number < min || *number > max)
3437 return FALSE;
3439 *posref = pos;
3440 return TRUE;
3441 }
3443 static struct blame_commit *
3444 parse_blame_commit(struct view *view, char *text, int *blamed)
3445 {
3446 struct blame_commit *commit;
3447 struct blame *blame;
3448 char *pos = text + SIZEOF_REV - 1;
3449 size_t lineno;
3450 size_t group;
3451 struct line *line;
3453 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3454 return NULL;
3456 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3457 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3458 return NULL;
3460 commit = get_blame_commit(view, text);
3461 if (!commit)
3462 return NULL;
3464 *blamed += group;
3465 while (group--) {
3466 struct line *line = &view->line[lineno + group - 1];
3468 blame = line->data;
3469 blame->commit = commit;
3470 line->dirty = 1;
3471 }
3472 blame->header = 1;
3474 return commit;
3475 }
3477 static bool
3478 blame_read_file(struct view *view, char *line)
3479 {
3480 if (!line) {
3481 FILE *pipe = NULL;
3483 if (view->lines > 0)
3484 pipe = popen(view->cmd, "r");
3485 view->cmd[0] = 0;
3486 if (!pipe) {
3487 report("Failed to load blame data");
3488 return TRUE;
3489 }
3491 fclose(view->pipe);
3492 view->pipe = pipe;
3493 return FALSE;
3495 } else {
3496 size_t linelen = strlen(line);
3497 struct blame *blame = malloc(sizeof(*blame) + linelen);
3499 if (!line)
3500 return FALSE;
3502 blame->commit = NULL;
3503 strncpy(blame->text, line, linelen);
3504 blame->text[linelen] = 0;
3505 return add_line_data(view, blame, LINE_BLAME_COMMIT) != NULL;
3506 }
3507 }
3509 static bool
3510 match_blame_header(const char *name, char **line)
3511 {
3512 size_t namelen = strlen(name);
3513 bool matched = !strncmp(name, *line, namelen);
3515 if (matched)
3516 *line += namelen;
3518 return matched;
3519 }
3521 static bool
3522 blame_read(struct view *view, char *line)
3523 {
3524 static struct blame_commit *commit = NULL;
3525 static int blamed = 0;
3526 static time_t author_time;
3528 if (*view->cmd)
3529 return blame_read_file(view, line);
3531 if (!line) {
3532 /* Reset all! */
3533 commit = NULL;
3534 blamed = 0;
3535 string_format(view->ref, "%s", view->vid);
3536 if (view_is_displayed(view)) {
3537 update_view_title(view);
3538 redraw_view_from(view, 0);
3539 }
3540 return TRUE;
3541 }
3543 if (!commit) {
3544 commit = parse_blame_commit(view, line, &blamed);
3545 string_format(view->ref, "%s %2d%%", view->vid,
3546 blamed * 100 / view->lines);
3548 } else if (match_blame_header("author ", &line)) {
3549 string_ncopy(commit->author, line, strlen(line));
3551 } else if (match_blame_header("author-time ", &line)) {
3552 author_time = (time_t) atol(line);
3554 } else if (match_blame_header("author-tz ", &line)) {
3555 long tz;
3557 tz = ('0' - line[1]) * 60 * 60 * 10;
3558 tz += ('0' - line[2]) * 60 * 60;
3559 tz += ('0' - line[3]) * 60;
3560 tz += ('0' - line[4]) * 60;
3562 if (line[0] == '-')
3563 tz = -tz;
3565 author_time -= tz;
3566 gmtime_r(&author_time, &commit->time);
3568 } else if (match_blame_header("summary ", &line)) {
3569 string_ncopy(commit->title, line, strlen(line));
3571 } else if (match_blame_header("filename ", &line)) {
3572 string_ncopy(commit->filename, line, strlen(line));
3573 commit = NULL;
3574 }
3576 return TRUE;
3577 }
3579 static bool
3580 blame_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3581 {
3582 int tilde_attr = -1;
3583 struct blame *blame = line->data;
3584 int col = 0;
3586 wmove(view->win, lineno, 0);
3588 if (selected) {
3589 wattrset(view->win, get_line_attr(LINE_CURSOR));
3590 wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
3591 } else {
3592 wattrset(view->win, A_NORMAL);
3593 tilde_attr = get_line_attr(LINE_MAIN_DELIM);
3594 }
3596 if (opt_date) {
3597 int n;
3599 if (!selected)
3600 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
3601 if (blame->commit) {
3602 char buf[DATE_COLS + 1];
3603 int timelen;
3605 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &blame->commit->time);
3606 n = draw_text(view, buf, view->width - col, FALSE, tilde_attr);
3607 draw_text(view, " ", view->width - col - n, FALSE, tilde_attr);
3608 }
3610 col += DATE_COLS;
3611 wmove(view->win, lineno, col);
3612 if (col >= view->width)
3613 return TRUE;
3614 }
3616 if (opt_author) {
3617 int max = MIN(AUTHOR_COLS - 1, view->width - col);
3619 if (!selected)
3620 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
3621 if (blame->commit)
3622 draw_text(view, blame->commit->author, max, TRUE, tilde_attr);
3623 col += AUTHOR_COLS;
3624 if (col >= view->width)
3625 return TRUE;
3626 wmove(view->win, lineno, col);
3627 }
3629 {
3630 int max = MIN(ID_COLS - 1, view->width - col);
3632 if (!selected)
3633 wattrset(view->win, get_line_attr(LINE_BLAME_ID));
3634 if (blame->commit)
3635 draw_text(view, blame->commit->id, max, FALSE, -1);
3636 col += ID_COLS;
3637 if (col >= view->width)
3638 return TRUE;
3639 wmove(view->win, lineno, col);
3640 }
3642 {
3643 unsigned long real_lineno = view->offset + lineno + 1;
3644 char number[10] = " ";
3645 int max = MIN(view->digits, STRING_SIZE(number));
3646 bool showtrimmed = FALSE;
3648 if (real_lineno == 1 ||
3649 (real_lineno % opt_num_interval) == 0) {
3650 char fmt[] = "%1ld";
3652 if (view->digits <= 9)
3653 fmt[1] = '0' + view->digits;
3655 if (!string_format(number, fmt, real_lineno))
3656 number[0] = 0;
3657 showtrimmed = TRUE;
3658 }
3660 if (max > view->width - col)
3661 max = view->width - col;
3662 if (!selected)
3663 wattrset(view->win, get_line_attr(LINE_BLAME_LINENO));
3664 col += draw_text(view, number, max, showtrimmed, tilde_attr);
3665 if (col >= view->width)
3666 return TRUE;
3667 }
3669 if (!selected)
3670 wattrset(view->win, A_NORMAL);
3672 if (col >= view->width)
3673 return TRUE;
3674 waddch(view->win, ACS_VLINE);
3675 col++;
3676 if (col >= view->width)
3677 return TRUE;
3678 waddch(view->win, ' ');
3679 col++;
3680 col += draw_text(view, blame->text, view->width - col, TRUE, tilde_attr);
3682 return TRUE;
3683 }
3685 static enum request
3686 blame_request(struct view *view, enum request request, struct line *line)
3687 {
3688 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3689 struct blame *blame = line->data;
3691 switch (request) {
3692 case REQ_ENTER:
3693 if (!blame->commit) {
3694 report("No commit loaded yet");
3695 break;
3696 }
3698 if (!strcmp(blame->commit->id, "0000000000000000000000000000000000000000")) {
3699 char path[SIZEOF_STR];
3701 if (sq_quote(path, 0, view->vid) >= sizeof(path))
3702 break;
3703 string_format(opt_cmd, "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s 2>/dev/null", path);
3704 }
3706 open_view(view, REQ_VIEW_DIFF, flags);
3707 break;
3709 default:
3710 return request;
3711 }
3713 return REQ_NONE;
3714 }
3716 static bool
3717 blame_grep(struct view *view, struct line *line)
3718 {
3719 struct blame *blame = line->data;
3720 struct blame_commit *commit = blame->commit;
3721 regmatch_t pmatch;
3723 #define MATCH(text) \
3724 (*text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3726 if (commit) {
3727 char buf[DATE_COLS + 1];
3729 if (MATCH(commit->title) ||
3730 MATCH(commit->author) ||
3731 MATCH(commit->id))
3732 return TRUE;
3734 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
3735 MATCH(buf))
3736 return TRUE;
3737 }
3739 return MATCH(blame->text);
3741 #undef MATCH
3742 }
3744 static void
3745 blame_select(struct view *view, struct line *line)
3746 {
3747 struct blame *blame = line->data;
3748 struct blame_commit *commit = blame->commit;
3750 if (!commit)
3751 return;
3753 if (!strcmp(commit->id, "0000000000000000000000000000000000000000"))
3754 string_ncopy(ref_commit, "HEAD", 4);
3755 else
3756 string_copy_rev(ref_commit, commit->id);
3757 }
3759 static struct view_ops blame_ops = {
3760 "line",
3761 blame_open,
3762 blame_read,
3763 blame_draw,
3764 blame_request,
3765 blame_grep,
3766 blame_select,
3767 };
3769 /*
3770 * Status backend
3771 */
3773 struct status {
3774 char status;
3775 struct {
3776 mode_t mode;
3777 char rev[SIZEOF_REV];
3778 char name[SIZEOF_STR];
3779 } old;
3780 struct {
3781 mode_t mode;
3782 char rev[SIZEOF_REV];
3783 char name[SIZEOF_STR];
3784 } new;
3785 };
3787 static struct status stage_status;
3788 static enum line_type stage_line_type;
3790 /* Get fields from the diff line:
3791 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
3792 */
3793 static inline bool
3794 status_get_diff(struct status *file, char *buf, size_t bufsize)
3795 {
3796 char *old_mode = buf + 1;
3797 char *new_mode = buf + 8;
3798 char *old_rev = buf + 15;
3799 char *new_rev = buf + 56;
3800 char *status = buf + 97;
3802 if (bufsize < 99 ||
3803 old_mode[-1] != ':' ||
3804 new_mode[-1] != ' ' ||
3805 old_rev[-1] != ' ' ||
3806 new_rev[-1] != ' ' ||
3807 status[-1] != ' ')
3808 return FALSE;
3810 file->status = *status;
3812 string_copy_rev(file->old.rev, old_rev);
3813 string_copy_rev(file->new.rev, new_rev);
3815 file->old.mode = strtoul(old_mode, NULL, 8);
3816 file->new.mode = strtoul(new_mode, NULL, 8);
3818 file->old.name[0] = file->new.name[0] = 0;
3820 return TRUE;
3821 }
3823 static bool
3824 status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
3825 {
3826 struct status *file = NULL;
3827 struct status *unmerged = NULL;
3828 char buf[SIZEOF_STR * 4];
3829 size_t bufsize = 0;
3830 FILE *pipe;
3832 pipe = popen(cmd, "r");
3833 if (!pipe)
3834 return FALSE;
3836 add_line_data(view, NULL, type);
3838 while (!feof(pipe) && !ferror(pipe)) {
3839 char *sep;
3840 size_t readsize;
3842 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
3843 if (!readsize)
3844 break;
3845 bufsize += readsize;
3847 /* Process while we have NUL chars. */
3848 while ((sep = memchr(buf, 0, bufsize))) {
3849 size_t sepsize = sep - buf + 1;
3851 if (!file) {
3852 if (!realloc_lines(view, view->line_size + 1))
3853 goto error_out;
3855 file = calloc(1, sizeof(*file));
3856 if (!file)
3857 goto error_out;
3859 add_line_data(view, file, type);
3860 }
3862 /* Parse diff info part. */
3863 if (!diff) {
3864 file->status = '?';
3866 } else if (!file->status) {
3867 if (!status_get_diff(file, buf, sepsize))
3868 goto error_out;
3870 bufsize -= sepsize;
3871 memmove(buf, sep + 1, bufsize);
3873 sep = memchr(buf, 0, bufsize);
3874 if (!sep)
3875 break;
3876 sepsize = sep - buf + 1;
3878 /* Collapse all 'M'odified entries that
3879 * follow a associated 'U'nmerged entry.
3880 */
3881 if (file->status == 'U') {
3882 unmerged = file;
3884 } else if (unmerged) {
3885 int collapse = !strcmp(buf, unmerged->new.name);
3887 unmerged = NULL;
3888 if (collapse) {
3889 free(file);
3890 view->lines--;
3891 continue;
3892 }
3893 }
3894 }
3896 /* Grab the old name for rename/copy. */
3897 if (!*file->old.name &&
3898 (file->status == 'R' || file->status == 'C')) {
3899 sepsize = sep - buf + 1;
3900 string_ncopy(file->old.name, buf, sepsize);
3901 bufsize -= sepsize;
3902 memmove(buf, sep + 1, bufsize);
3904 sep = memchr(buf, 0, bufsize);
3905 if (!sep)
3906 break;
3907 sepsize = sep - buf + 1;
3908 }
3910 /* git-ls-files just delivers a NUL separated
3911 * list of file names similar to the second half
3912 * of the git-diff-* output. */
3913 string_ncopy(file->new.name, buf, sepsize);
3914 if (!*file->old.name)
3915 string_copy(file->old.name, file->new.name);
3916 bufsize -= sepsize;
3917 memmove(buf, sep + 1, bufsize);
3918 file = NULL;
3919 }
3920 }
3922 if (ferror(pipe)) {
3923 error_out:
3924 pclose(pipe);
3925 return FALSE;
3926 }
3928 if (!view->line[view->lines - 1].data)
3929 add_line_data(view, NULL, LINE_STAT_NONE);
3931 pclose(pipe);
3932 return TRUE;
3933 }
3935 /* Don't show unmerged entries in the staged section. */
3936 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached -M HEAD"
3937 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
3938 #define STATUS_LIST_OTHER_CMD \
3939 "git ls-files -z --others --exclude-per-directory=.gitignore"
3941 #define STATUS_DIFF_INDEX_SHOW_CMD \
3942 "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null"
3944 #define STATUS_DIFF_FILES_SHOW_CMD \
3945 "git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null"
3947 /* First parse staged info using git-diff-index(1), then parse unstaged
3948 * info using git-diff-files(1), and finally untracked files using
3949 * git-ls-files(1). */
3950 static bool
3951 status_open(struct view *view)
3952 {
3953 struct stat statbuf;
3954 char exclude[SIZEOF_STR];
3955 char cmd[SIZEOF_STR];
3956 unsigned long prev_lineno = view->lineno;
3957 size_t i;
3959 for (i = 0; i < view->lines; i++)
3960 free(view->line[i].data);
3961 free(view->line);
3962 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
3963 view->line = NULL;
3965 if (!realloc_lines(view, view->line_size + 6))
3966 return FALSE;
3968 if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
3969 return FALSE;
3971 string_copy(cmd, STATUS_LIST_OTHER_CMD);
3973 if (stat(exclude, &statbuf) >= 0) {
3974 size_t cmdsize = strlen(cmd);
3976 if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
3977 sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
3978 return FALSE;
3979 }
3981 system("git update-index -q --refresh");
3983 if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
3984 !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
3985 !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
3986 return FALSE;
3988 /* If all went well restore the previous line number to stay in
3989 * the context. */
3990 if (prev_lineno < view->lines)
3991 view->lineno = prev_lineno;
3992 else
3993 view->lineno = view->lines - 1;
3995 return TRUE;
3996 }
3998 static bool
3999 status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
4000 {
4001 struct status *status = line->data;
4002 int tilde_attr = get_line_attr(LINE_MAIN_DELIM);
4004 wmove(view->win, lineno, 0);
4006 if (selected) {
4007 wattrset(view->win, get_line_attr(LINE_CURSOR));
4008 wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
4009 tilde_attr = -1;
4011 } else if (!status && line->type != LINE_STAT_NONE) {
4012 wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
4013 wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
4015 } else {
4016 wattrset(view->win, get_line_attr(line->type));
4017 }
4019 if (!status) {
4020 char *text;
4022 switch (line->type) {
4023 case LINE_STAT_STAGED:
4024 text = "Changes to be committed:";
4025 break;
4027 case LINE_STAT_UNSTAGED:
4028 text = "Changed but not updated:";
4029 break;
4031 case LINE_STAT_UNTRACKED:
4032 text = "Untracked files:";
4033 break;
4035 case LINE_STAT_NONE:
4036 text = " (no files)";
4037 break;
4039 default:
4040 return FALSE;
4041 }
4043 draw_text(view, text, view->width, TRUE, tilde_attr);
4044 return TRUE;
4045 }
4047 waddch(view->win, status->status);
4048 if (!selected)
4049 wattrset(view->win, A_NORMAL);
4050 wmove(view->win, lineno, 4);
4051 if (view->width < 5)
4052 return TRUE;
4054 draw_text(view, status->new.name, view->width - 5, TRUE, tilde_attr);
4055 return TRUE;
4056 }
4058 static enum request
4059 status_enter(struct view *view, struct line *line)
4060 {
4061 struct status *status = line->data;
4062 char oldpath[SIZEOF_STR] = "";
4063 char newpath[SIZEOF_STR] = "";
4064 char *info;
4065 size_t cmdsize = 0;
4067 if (line->type == LINE_STAT_NONE ||
4068 (!status && line[1].type == LINE_STAT_NONE)) {
4069 report("No file to diff");
4070 return REQ_NONE;
4071 }
4073 if (status) {
4074 if (sq_quote(oldpath, 0, status->old.name) >= sizeof(oldpath))
4075 return REQ_QUIT;
4076 /* Diffs for unmerged entries are empty when pasing the
4077 * new path, so leave it empty. */
4078 if (status->status != 'U' &&
4079 sq_quote(newpath, 0, status->new.name) >= sizeof(newpath))
4080 return REQ_QUIT;
4081 }
4083 if (opt_cdup[0] &&
4084 line->type != LINE_STAT_UNTRACKED &&
4085 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
4086 return REQ_QUIT;
4088 switch (line->type) {
4089 case LINE_STAT_STAGED:
4090 if (!string_format_from(opt_cmd, &cmdsize,
4091 STATUS_DIFF_INDEX_SHOW_CMD, oldpath, newpath))
4092 return REQ_QUIT;
4093 if (status)
4094 info = "Staged changes to %s";
4095 else
4096 info = "Staged changes";
4097 break;
4099 case LINE_STAT_UNSTAGED:
4100 if (!string_format_from(opt_cmd, &cmdsize,
4101 STATUS_DIFF_FILES_SHOW_CMD, oldpath, newpath))
4102 return REQ_QUIT;
4103 if (status)
4104 info = "Unstaged changes to %s";
4105 else
4106 info = "Unstaged changes";
4107 break;
4109 case LINE_STAT_UNTRACKED:
4110 if (opt_pipe)
4111 return REQ_QUIT;
4114 if (!status) {
4115 report("No file to show");
4116 return REQ_NONE;
4117 }
4119 opt_pipe = fopen(status->new.name, "r");
4120 info = "Untracked file %s";
4121 break;
4123 default:
4124 die("line type %d not handled in switch", line->type);
4125 }
4127 open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | OPEN_SPLIT);
4128 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4129 if (status) {
4130 stage_status = *status;
4131 } else {
4132 memset(&stage_status, 0, sizeof(stage_status));
4133 }
4135 stage_line_type = line->type;
4136 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4137 }
4139 return REQ_NONE;
4140 }
4143 static bool
4144 status_update_file(struct view *view, struct status *status, enum line_type type)
4145 {
4146 char cmd[SIZEOF_STR];
4147 char buf[SIZEOF_STR];
4148 size_t cmdsize = 0;
4149 size_t bufsize = 0;
4150 size_t written = 0;
4151 FILE *pipe;
4153 if (opt_cdup[0] &&
4154 type != LINE_STAT_UNTRACKED &&
4155 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4156 return FALSE;
4158 switch (type) {
4159 case LINE_STAT_STAGED:
4160 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4161 status->old.mode,
4162 status->old.rev,
4163 status->old.name, 0))
4164 return FALSE;
4166 string_add(cmd, cmdsize, "git update-index -z --index-info");
4167 break;
4169 case LINE_STAT_UNSTAGED:
4170 case LINE_STAT_UNTRACKED:
4171 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4172 return FALSE;
4174 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
4175 break;
4177 default:
4178 die("line type %d not handled in switch", type);
4179 }
4181 pipe = popen(cmd, "w");
4182 if (!pipe)
4183 return FALSE;
4185 while (!ferror(pipe) && written < bufsize) {
4186 written += fwrite(buf + written, 1, bufsize - written, pipe);
4187 }
4189 pclose(pipe);
4191 if (written != bufsize)
4192 return FALSE;
4194 return TRUE;
4195 }
4197 static void
4198 status_update(struct view *view)
4199 {
4200 struct line *line = &view->line[view->lineno];
4202 assert(view->lines);
4204 if (!line->data) {
4205 while (++line < view->line + view->lines && line->data) {
4206 if (!status_update_file(view, line->data, line->type))
4207 report("Failed to update file status");
4208 }
4210 if (!line[-1].data) {
4211 report("Nothing to update");
4212 return;
4213 }
4215 } else if (!status_update_file(view, line->data, line->type)) {
4216 report("Failed to update file status");
4217 }
4218 }
4220 static enum request
4221 status_request(struct view *view, enum request request, struct line *line)
4222 {
4223 struct status *status = line->data;
4225 switch (request) {
4226 case REQ_STATUS_UPDATE:
4227 status_update(view);
4228 break;
4230 case REQ_STATUS_MERGE:
4231 if (!status || status->status != 'U') {
4232 report("Merging only possible for files with unmerged status ('U').");
4233 return REQ_NONE;
4234 }
4235 open_mergetool(status->new.name);
4236 break;
4238 case REQ_EDIT:
4239 if (!status)
4240 return request;
4242 open_editor(status->status != '?', status->new.name);
4243 break;
4245 case REQ_VIEW_BLAME:
4246 if (status) {
4247 string_copy(opt_path, status->new.name);
4248 opt_ref[0] = 0;
4249 }
4250 return request;
4252 case REQ_ENTER:
4253 /* After returning the status view has been split to
4254 * show the stage view. No further reloading is
4255 * necessary. */
4256 status_enter(view, line);
4257 return REQ_NONE;
4259 case REQ_REFRESH:
4260 /* Simply reload the view. */
4261 break;
4263 default:
4264 return request;
4265 }
4267 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4269 return REQ_NONE;
4270 }
4272 static void
4273 status_select(struct view *view, struct line *line)
4274 {
4275 struct status *status = line->data;
4276 char file[SIZEOF_STR] = "all files";
4277 char *text;
4278 char *key;
4280 if (status && !string_format(file, "'%s'", status->new.name))
4281 return;
4283 if (!status && line[1].type == LINE_STAT_NONE)
4284 line++;
4286 switch (line->type) {
4287 case LINE_STAT_STAGED:
4288 text = "Press %s to unstage %s for commit";
4289 break;
4291 case LINE_STAT_UNSTAGED:
4292 text = "Press %s to stage %s for commit";
4293 break;
4295 case LINE_STAT_UNTRACKED:
4296 text = "Press %s to stage %s for addition";
4297 break;
4299 case LINE_STAT_NONE:
4300 text = "Nothing to update";
4301 break;
4303 default:
4304 die("line type %d not handled in switch", line->type);
4305 }
4307 if (status && status->status == 'U') {
4308 text = "Press %s to resolve conflict in %s";
4309 key = get_key(REQ_STATUS_MERGE);
4311 } else {
4312 key = get_key(REQ_STATUS_UPDATE);
4313 }
4315 string_format(view->ref, text, key, file);
4316 }
4318 static bool
4319 status_grep(struct view *view, struct line *line)
4320 {
4321 struct status *status = line->data;
4322 enum { S_STATUS, S_NAME, S_END } state;
4323 char buf[2] = "?";
4324 regmatch_t pmatch;
4326 if (!status)
4327 return FALSE;
4329 for (state = S_STATUS; state < S_END; state++) {
4330 char *text;
4332 switch (state) {
4333 case S_NAME: text = status->new.name; break;
4334 case S_STATUS:
4335 buf[0] = status->status;
4336 text = buf;
4337 break;
4339 default:
4340 return FALSE;
4341 }
4343 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4344 return TRUE;
4345 }
4347 return FALSE;
4348 }
4350 static struct view_ops status_ops = {
4351 "file",
4352 status_open,
4353 NULL,
4354 status_draw,
4355 status_request,
4356 status_grep,
4357 status_select,
4358 };
4361 static bool
4362 stage_diff_line(FILE *pipe, struct line *line)
4363 {
4364 char *buf = line->data;
4365 size_t bufsize = strlen(buf);
4366 size_t written = 0;
4368 while (!ferror(pipe) && written < bufsize) {
4369 written += fwrite(buf + written, 1, bufsize - written, pipe);
4370 }
4372 fputc('\n', pipe);
4374 return written == bufsize;
4375 }
4377 static struct line *
4378 stage_diff_hdr(struct view *view, struct line *line)
4379 {
4380 int diff_hdr_dir = line->type == LINE_DIFF_CHUNK ? -1 : 1;
4381 struct line *diff_hdr;
4383 if (line->type == LINE_DIFF_CHUNK)
4384 diff_hdr = line - 1;
4385 else
4386 diff_hdr = view->line + 1;
4388 while (diff_hdr > view->line && diff_hdr < view->line + view->lines) {
4389 if (diff_hdr->type == LINE_DIFF_HEADER)
4390 return diff_hdr;
4392 diff_hdr += diff_hdr_dir;
4393 }
4395 return NULL;
4396 }
4398 static bool
4399 stage_update_chunk(struct view *view, struct line *line)
4400 {
4401 char cmd[SIZEOF_STR];
4402 size_t cmdsize = 0;
4403 struct line *diff_hdr, *diff_chunk, *diff_end;
4404 FILE *pipe;
4406 diff_hdr = stage_diff_hdr(view, line);
4407 if (!diff_hdr)
4408 return FALSE;
4410 if (opt_cdup[0] &&
4411 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4412 return FALSE;
4414 if (!string_format_from(cmd, &cmdsize,
4415 "git apply --cached %s - && "
4416 "git update-index -q --unmerged --refresh 2>/dev/null",
4417 stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
4418 return FALSE;
4420 pipe = popen(cmd, "w");
4421 if (!pipe)
4422 return FALSE;
4424 diff_end = view->line + view->lines;
4425 if (line->type != LINE_DIFF_CHUNK) {
4426 diff_chunk = diff_hdr;
4428 } else {
4429 for (diff_chunk = line + 1; diff_chunk < diff_end; diff_chunk++)
4430 if (diff_chunk->type == LINE_DIFF_CHUNK ||
4431 diff_chunk->type == LINE_DIFF_HEADER)
4432 diff_end = diff_chunk;
4434 diff_chunk = line;
4436 while (diff_hdr->type != LINE_DIFF_CHUNK) {
4437 switch (diff_hdr->type) {
4438 case LINE_DIFF_HEADER:
4439 case LINE_DIFF_INDEX:
4440 case LINE_DIFF_ADD:
4441 case LINE_DIFF_DEL:
4442 break;
4444 default:
4445 diff_hdr++;
4446 continue;
4447 }
4449 if (!stage_diff_line(pipe, diff_hdr++)) {
4450 pclose(pipe);
4451 return FALSE;
4452 }
4453 }
4454 }
4456 while (diff_chunk < diff_end && stage_diff_line(pipe, diff_chunk))
4457 diff_chunk++;
4459 pclose(pipe);
4461 if (diff_chunk != diff_end)
4462 return FALSE;
4464 return TRUE;
4465 }
4467 static void
4468 stage_update(struct view *view, struct line *line)
4469 {
4470 if (stage_line_type != LINE_STAT_UNTRACKED &&
4471 (line->type == LINE_DIFF_CHUNK || !stage_status.status)) {
4472 if (!stage_update_chunk(view, line)) {
4473 report("Failed to apply chunk");
4474 return;
4475 }
4477 } else if (!status_update_file(view, &stage_status, stage_line_type)) {
4478 report("Failed to update file");
4479 return;
4480 }
4482 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4484 view = VIEW(REQ_VIEW_STATUS);
4485 if (view_is_displayed(view))
4486 status_enter(view, &view->line[view->lineno]);
4487 }
4489 static enum request
4490 stage_request(struct view *view, enum request request, struct line *line)
4491 {
4492 switch (request) {
4493 case REQ_STATUS_UPDATE:
4494 stage_update(view, line);
4495 break;
4497 case REQ_EDIT:
4498 if (!stage_status.new.name[0])
4499 return request;
4501 open_editor(stage_status.status != '?', stage_status.new.name);
4502 break;
4504 case REQ_VIEW_BLAME:
4505 if (stage_status.new.name[0]) {
4506 string_copy(opt_path, stage_status.new.name);
4507 opt_ref[0] = 0;
4508 }
4509 return request;
4511 case REQ_ENTER:
4512 pager_request(view, request, line);
4513 break;
4515 default:
4516 return request;
4517 }
4519 return REQ_NONE;
4520 }
4522 static struct view_ops stage_ops = {
4523 "line",
4524 NULL,
4525 pager_read,
4526 pager_draw,
4527 stage_request,
4528 pager_grep,
4529 pager_select,
4530 };
4533 /*
4534 * Revision graph
4535 */
4537 struct commit {
4538 char id[SIZEOF_REV]; /* SHA1 ID. */
4539 char title[128]; /* First line of the commit message. */
4540 char author[75]; /* Author of the commit. */
4541 struct tm time; /* Date from the author ident. */
4542 struct ref **refs; /* Repository references. */
4543 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
4544 size_t graph_size; /* The width of the graph array. */
4545 bool has_parents; /* Rewritten --parents seen. */
4546 };
4548 /* Size of rev graph with no "padding" columns */
4549 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
4551 struct rev_graph {
4552 struct rev_graph *prev, *next, *parents;
4553 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
4554 size_t size;
4555 struct commit *commit;
4556 size_t pos;
4557 unsigned int boundary:1;
4558 };
4560 /* Parents of the commit being visualized. */
4561 static struct rev_graph graph_parents[4];
4563 /* The current stack of revisions on the graph. */
4564 static struct rev_graph graph_stacks[4] = {
4565 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
4566 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
4567 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
4568 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
4569 };
4571 static inline bool
4572 graph_parent_is_merge(struct rev_graph *graph)
4573 {
4574 return graph->parents->size > 1;
4575 }
4577 static inline void
4578 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
4579 {
4580 struct commit *commit = graph->commit;
4582 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
4583 commit->graph[commit->graph_size++] = symbol;
4584 }
4586 static void
4587 done_rev_graph(struct rev_graph *graph)
4588 {
4589 if (graph_parent_is_merge(graph) &&
4590 graph->pos < graph->size - 1 &&
4591 graph->next->size == graph->size + graph->parents->size - 1) {
4592 size_t i = graph->pos + graph->parents->size - 1;
4594 graph->commit->graph_size = i * 2;
4595 while (i < graph->next->size - 1) {
4596 append_to_rev_graph(graph, ' ');
4597 append_to_rev_graph(graph, '\\');
4598 i++;
4599 }
4600 }
4602 graph->size = graph->pos = 0;
4603 graph->commit = NULL;
4604 memset(graph->parents, 0, sizeof(*graph->parents));
4605 }
4607 static void
4608 push_rev_graph(struct rev_graph *graph, char *parent)
4609 {
4610 int i;
4612 /* "Collapse" duplicate parents lines.
4613 *
4614 * FIXME: This needs to also update update the drawn graph but
4615 * for now it just serves as a method for pruning graph lines. */
4616 for (i = 0; i < graph->size; i++)
4617 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
4618 return;
4620 if (graph->size < SIZEOF_REVITEMS) {
4621 string_copy_rev(graph->rev[graph->size++], parent);
4622 }
4623 }
4625 static chtype
4626 get_rev_graph_symbol(struct rev_graph *graph)
4627 {
4628 chtype symbol;
4630 if (graph->boundary)
4631 symbol = REVGRAPH_BOUND;
4632 else if (graph->parents->size == 0)
4633 symbol = REVGRAPH_INIT;
4634 else if (graph_parent_is_merge(graph))
4635 symbol = REVGRAPH_MERGE;
4636 else if (graph->pos >= graph->size)
4637 symbol = REVGRAPH_BRANCH;
4638 else
4639 symbol = REVGRAPH_COMMIT;
4641 return symbol;
4642 }
4644 static void
4645 draw_rev_graph(struct rev_graph *graph)
4646 {
4647 struct rev_filler {
4648 chtype separator, line;
4649 };
4650 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
4651 static struct rev_filler fillers[] = {
4652 { ' ', REVGRAPH_LINE },
4653 { '`', '.' },
4654 { '\'', ' ' },
4655 { '/', ' ' },
4656 };
4657 chtype symbol = get_rev_graph_symbol(graph);
4658 struct rev_filler *filler;
4659 size_t i;
4661 filler = &fillers[DEFAULT];
4663 for (i = 0; i < graph->pos; i++) {
4664 append_to_rev_graph(graph, filler->line);
4665 if (graph_parent_is_merge(graph->prev) &&
4666 graph->prev->pos == i)
4667 filler = &fillers[RSHARP];
4669 append_to_rev_graph(graph, filler->separator);
4670 }
4672 /* Place the symbol for this revision. */
4673 append_to_rev_graph(graph, symbol);
4675 if (graph->prev->size > graph->size)
4676 filler = &fillers[RDIAG];
4677 else
4678 filler = &fillers[DEFAULT];
4680 i++;
4682 for (; i < graph->size; i++) {
4683 append_to_rev_graph(graph, filler->separator);
4684 append_to_rev_graph(graph, filler->line);
4685 if (graph_parent_is_merge(graph->prev) &&
4686 i < graph->prev->pos + graph->parents->size)
4687 filler = &fillers[RSHARP];
4688 if (graph->prev->size > graph->size)
4689 filler = &fillers[LDIAG];
4690 }
4692 if (graph->prev->size > graph->size) {
4693 append_to_rev_graph(graph, filler->separator);
4694 if (filler->line != ' ')
4695 append_to_rev_graph(graph, filler->line);
4696 }
4697 }
4699 /* Prepare the next rev graph */
4700 static void
4701 prepare_rev_graph(struct rev_graph *graph)
4702 {
4703 size_t i;
4705 /* First, traverse all lines of revisions up to the active one. */
4706 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
4707 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
4708 break;
4710 push_rev_graph(graph->next, graph->rev[graph->pos]);
4711 }
4713 /* Interleave the new revision parent(s). */
4714 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
4715 push_rev_graph(graph->next, graph->parents->rev[i]);
4717 /* Lastly, put any remaining revisions. */
4718 for (i = graph->pos + 1; i < graph->size; i++)
4719 push_rev_graph(graph->next, graph->rev[i]);
4720 }
4722 static void
4723 update_rev_graph(struct rev_graph *graph)
4724 {
4725 /* If this is the finalizing update ... */
4726 if (graph->commit)
4727 prepare_rev_graph(graph);
4729 /* Graph visualization needs a one rev look-ahead,
4730 * so the first update doesn't visualize anything. */
4731 if (!graph->prev->commit)
4732 return;
4734 draw_rev_graph(graph->prev);
4735 done_rev_graph(graph->prev->prev);
4736 }
4739 /*
4740 * Main view backend
4741 */
4743 static bool
4744 main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
4745 {
4746 char buf[DATE_COLS + 1];
4747 struct commit *commit = line->data;
4748 enum line_type type;
4749 int col = 0;
4750 size_t timelen;
4751 int tilde_attr;
4752 int space;
4754 if (!*commit->author)
4755 return FALSE;
4757 space = view->width;
4758 wmove(view->win, lineno, col);
4760 if (selected) {
4761 type = LINE_CURSOR;
4762 wattrset(view->win, get_line_attr(type));
4763 wchgat(view->win, -1, 0, type, NULL);
4764 tilde_attr = -1;
4765 } else {
4766 type = LINE_MAIN_COMMIT;
4767 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
4768 tilde_attr = get_line_attr(LINE_MAIN_DELIM);
4769 }
4771 if (opt_date) {
4772 int n;
4774 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
4775 n = draw_text(view, buf, view->width - col, FALSE, tilde_attr);
4776 draw_text(view, " ", view->width - col - n, FALSE, tilde_attr);
4778 col += DATE_COLS;
4779 wmove(view->win, lineno, col);
4780 if (col >= view->width)
4781 return TRUE;
4782 }
4783 if (type != LINE_CURSOR)
4784 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
4786 if (opt_author) {
4787 int max_len;
4789 max_len = view->width - col;
4790 if (max_len > AUTHOR_COLS - 1)
4791 max_len = AUTHOR_COLS - 1;
4792 draw_text(view, commit->author, max_len, TRUE, tilde_attr);
4793 col += AUTHOR_COLS;
4794 if (col >= view->width)
4795 return TRUE;
4796 }
4798 if (opt_rev_graph && commit->graph_size) {
4799 size_t graph_size = view->width - col;
4800 size_t i;
4802 if (type != LINE_CURSOR)
4803 wattrset(view->win, get_line_attr(LINE_MAIN_REVGRAPH));
4804 wmove(view->win, lineno, col);
4805 if (graph_size > commit->graph_size)
4806 graph_size = commit->graph_size;
4807 /* Using waddch() instead of waddnstr() ensures that
4808 * they'll be rendered correctly for the cursor line. */
4809 for (i = 0; i < graph_size; i++)
4810 waddch(view->win, commit->graph[i]);
4812 col += commit->graph_size + 1;
4813 if (col >= view->width)
4814 return TRUE;
4815 waddch(view->win, ' ');
4816 }
4817 if (type != LINE_CURSOR)
4818 wattrset(view->win, A_NORMAL);
4820 wmove(view->win, lineno, col);
4822 if (opt_show_refs && commit->refs) {
4823 size_t i = 0;
4825 do {
4826 if (type == LINE_CURSOR)
4827 ;
4828 else if (commit->refs[i]->ltag)
4829 wattrset(view->win, get_line_attr(LINE_MAIN_LOCAL_TAG));
4830 else if (commit->refs[i]->tag)
4831 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
4832 else if (commit->refs[i]->remote)
4833 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
4834 else
4835 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
4837 col += draw_text(view, "[", view->width - col, TRUE, tilde_attr);
4838 col += draw_text(view, commit->refs[i]->name, view->width - col,
4839 TRUE, tilde_attr);
4840 col += draw_text(view, "]", view->width - col, TRUE, tilde_attr);
4841 if (type != LINE_CURSOR)
4842 wattrset(view->win, A_NORMAL);
4843 col += draw_text(view, " ", view->width - col, TRUE, tilde_attr);
4844 if (col >= view->width)
4845 return TRUE;
4846 } while (commit->refs[i++]->next);
4847 }
4849 if (type != LINE_CURSOR)
4850 wattrset(view->win, get_line_attr(type));
4852 draw_text(view, commit->title, view->width - col, TRUE, tilde_attr);
4853 return TRUE;
4854 }
4856 /* Reads git log --pretty=raw output and parses it into the commit struct. */
4857 static bool
4858 main_read(struct view *view, char *line)
4859 {
4860 static struct rev_graph *graph = graph_stacks;
4861 enum line_type type;
4862 struct commit *commit;
4864 if (!line) {
4865 update_rev_graph(graph);
4866 return TRUE;
4867 }
4869 type = get_line_type(line);
4870 if (type == LINE_COMMIT) {
4871 commit = calloc(1, sizeof(struct commit));
4872 if (!commit)
4873 return FALSE;
4875 line += STRING_SIZE("commit ");
4876 if (*line == '-') {
4877 graph->boundary = 1;
4878 line++;
4879 }
4881 string_copy_rev(commit->id, line);
4882 commit->refs = get_refs(commit->id);
4883 graph->commit = commit;
4884 add_line_data(view, commit, LINE_MAIN_COMMIT);
4886 while ((line = strchr(line, ' '))) {
4887 line++;
4888 push_rev_graph(graph->parents, line);
4889 commit->has_parents = TRUE;
4890 }
4891 return TRUE;
4892 }
4894 if (!view->lines)
4895 return TRUE;
4896 commit = view->line[view->lines - 1].data;
4898 switch (type) {
4899 case LINE_PARENT:
4900 if (commit->has_parents)
4901 break;
4902 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
4903 break;
4905 case LINE_AUTHOR:
4906 {
4907 /* Parse author lines where the name may be empty:
4908 * author <email@address.tld> 1138474660 +0100
4909 */
4910 char *ident = line + STRING_SIZE("author ");
4911 char *nameend = strchr(ident, '<');
4912 char *emailend = strchr(ident, '>');
4914 if (!nameend || !emailend)
4915 break;
4917 update_rev_graph(graph);
4918 graph = graph->next;
4920 *nameend = *emailend = 0;
4921 ident = chomp_string(ident);
4922 if (!*ident) {
4923 ident = chomp_string(nameend + 1);
4924 if (!*ident)
4925 ident = "Unknown";
4926 }
4928 string_ncopy(commit->author, ident, strlen(ident));
4930 /* Parse epoch and timezone */
4931 if (emailend[1] == ' ') {
4932 char *secs = emailend + 2;
4933 char *zone = strchr(secs, ' ');
4934 time_t time = (time_t) atol(secs);
4936 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
4937 long tz;
4939 zone++;
4940 tz = ('0' - zone[1]) * 60 * 60 * 10;
4941 tz += ('0' - zone[2]) * 60 * 60;
4942 tz += ('0' - zone[3]) * 60;
4943 tz += ('0' - zone[4]) * 60;
4945 if (zone[0] == '-')
4946 tz = -tz;
4948 time -= tz;
4949 }
4951 gmtime_r(&time, &commit->time);
4952 }
4953 break;
4954 }
4955 default:
4956 /* Fill in the commit title if it has not already been set. */
4957 if (commit->title[0])
4958 break;
4960 /* Require titles to start with a non-space character at the
4961 * offset used by git log. */
4962 if (strncmp(line, " ", 4))
4963 break;
4964 line += 4;
4965 /* Well, if the title starts with a whitespace character,
4966 * try to be forgiving. Otherwise we end up with no title. */
4967 while (isspace(*line))
4968 line++;
4969 if (*line == '\0')
4970 break;
4971 /* FIXME: More graceful handling of titles; append "..." to
4972 * shortened titles, etc. */
4974 string_ncopy(commit->title, line, strlen(line));
4975 }
4977 return TRUE;
4978 }
4980 static enum request
4981 main_request(struct view *view, enum request request, struct line *line)
4982 {
4983 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4985 if (request == REQ_ENTER)
4986 open_view(view, REQ_VIEW_DIFF, flags);
4987 else
4988 return request;
4990 return REQ_NONE;
4991 }
4993 static bool
4994 main_grep(struct view *view, struct line *line)
4995 {
4996 struct commit *commit = line->data;
4997 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
4998 char buf[DATE_COLS + 1];
4999 regmatch_t pmatch;
5001 for (state = S_TITLE; state < S_END; state++) {
5002 char *text;
5004 switch (state) {
5005 case S_TITLE: text = commit->title; break;
5006 case S_AUTHOR: text = commit->author; break;
5007 case S_DATE:
5008 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5009 continue;
5010 text = buf;
5011 break;
5013 default:
5014 return FALSE;
5015 }
5017 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5018 return TRUE;
5019 }
5021 return FALSE;
5022 }
5024 static void
5025 main_select(struct view *view, struct line *line)
5026 {
5027 struct commit *commit = line->data;
5029 string_copy_rev(view->ref, commit->id);
5030 string_copy_rev(ref_commit, view->ref);
5031 }
5033 static struct view_ops main_ops = {
5034 "commit",
5035 NULL,
5036 main_read,
5037 main_draw,
5038 main_request,
5039 main_grep,
5040 main_select,
5041 };
5044 /*
5045 * Unicode / UTF-8 handling
5046 *
5047 * NOTE: Much of the following code for dealing with unicode is derived from
5048 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5049 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5050 */
5052 /* I've (over)annotated a lot of code snippets because I am not entirely
5053 * confident that the approach taken by this small UTF-8 interface is correct.
5054 * --jonas */
5056 static inline int
5057 unicode_width(unsigned long c)
5058 {
5059 if (c >= 0x1100 &&
5060 (c <= 0x115f /* Hangul Jamo */
5061 || c == 0x2329
5062 || c == 0x232a
5063 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5064 /* CJK ... Yi */
5065 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5066 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5067 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5068 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5069 || (c >= 0xffe0 && c <= 0xffe6)
5070 || (c >= 0x20000 && c <= 0x2fffd)
5071 || (c >= 0x30000 && c <= 0x3fffd)))
5072 return 2;
5074 if (c == '\t')
5075 return opt_tab_size;
5077 return 1;
5078 }
5080 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5081 * Illegal bytes are set one. */
5082 static const unsigned char utf8_bytes[256] = {
5083 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,
5084 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,
5085 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,
5086 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,
5087 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,
5088 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,
5089 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,
5090 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,
5091 };
5093 /* Decode UTF-8 multi-byte representation into a unicode character. */
5094 static inline unsigned long
5095 utf8_to_unicode(const char *string, size_t length)
5096 {
5097 unsigned long unicode;
5099 switch (length) {
5100 case 1:
5101 unicode = string[0];
5102 break;
5103 case 2:
5104 unicode = (string[0] & 0x1f) << 6;
5105 unicode += (string[1] & 0x3f);
5106 break;
5107 case 3:
5108 unicode = (string[0] & 0x0f) << 12;
5109 unicode += ((string[1] & 0x3f) << 6);
5110 unicode += (string[2] & 0x3f);
5111 break;
5112 case 4:
5113 unicode = (string[0] & 0x0f) << 18;
5114 unicode += ((string[1] & 0x3f) << 12);
5115 unicode += ((string[2] & 0x3f) << 6);
5116 unicode += (string[3] & 0x3f);
5117 break;
5118 case 5:
5119 unicode = (string[0] & 0x0f) << 24;
5120 unicode += ((string[1] & 0x3f) << 18);
5121 unicode += ((string[2] & 0x3f) << 12);
5122 unicode += ((string[3] & 0x3f) << 6);
5123 unicode += (string[4] & 0x3f);
5124 break;
5125 case 6:
5126 unicode = (string[0] & 0x01) << 30;
5127 unicode += ((string[1] & 0x3f) << 24);
5128 unicode += ((string[2] & 0x3f) << 18);
5129 unicode += ((string[3] & 0x3f) << 12);
5130 unicode += ((string[4] & 0x3f) << 6);
5131 unicode += (string[5] & 0x3f);
5132 break;
5133 default:
5134 die("Invalid unicode length");
5135 }
5137 /* Invalid characters could return the special 0xfffd value but NUL
5138 * should be just as good. */
5139 return unicode > 0xffff ? 0 : unicode;
5140 }
5142 /* Calculates how much of string can be shown within the given maximum width
5143 * and sets trimmed parameter to non-zero value if all of string could not be
5144 * shown. If the reserve flag is TRUE, it will reserve at least one
5145 * trailing character, which can be useful when drawing a delimiter.
5146 *
5147 * Returns the number of bytes to output from string to satisfy max_width. */
5148 static size_t
5149 utf8_length(const char *string, size_t max_width, int *trimmed, bool reserve)
5150 {
5151 const char *start = string;
5152 const char *end = strchr(string, '\0');
5153 unsigned char last_bytes = 0;
5154 size_t width = 0;
5156 *trimmed = 0;
5158 while (string < end) {
5159 int c = *(unsigned char *) string;
5160 unsigned char bytes = utf8_bytes[c];
5161 size_t ucwidth;
5162 unsigned long unicode;
5164 if (string + bytes > end)
5165 break;
5167 /* Change representation to figure out whether
5168 * it is a single- or double-width character. */
5170 unicode = utf8_to_unicode(string, bytes);
5171 /* FIXME: Graceful handling of invalid unicode character. */
5172 if (!unicode)
5173 break;
5175 ucwidth = unicode_width(unicode);
5176 width += ucwidth;
5177 if (width > max_width) {
5178 *trimmed = 1;
5179 if (reserve && width - ucwidth == max_width) {
5180 string -= last_bytes;
5181 }
5182 break;
5183 }
5185 string += bytes;
5186 last_bytes = bytes;
5187 }
5189 return string - start;
5190 }
5193 /*
5194 * Status management
5195 */
5197 /* Whether or not the curses interface has been initialized. */
5198 static bool cursed = FALSE;
5200 /* The status window is used for polling keystrokes. */
5201 static WINDOW *status_win;
5203 static bool status_empty = TRUE;
5205 /* Update status and title window. */
5206 static void
5207 report(const char *msg, ...)
5208 {
5209 struct view *view = display[current_view];
5211 if (input_mode)
5212 return;
5214 if (!view) {
5215 char buf[SIZEOF_STR];
5216 va_list args;
5218 va_start(args, msg);
5219 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5220 buf[sizeof(buf) - 1] = 0;
5221 buf[sizeof(buf) - 2] = '.';
5222 buf[sizeof(buf) - 3] = '.';
5223 buf[sizeof(buf) - 4] = '.';
5224 }
5225 va_end(args);
5226 die("%s", buf);
5227 }
5229 if (!status_empty || *msg) {
5230 va_list args;
5232 va_start(args, msg);
5234 wmove(status_win, 0, 0);
5235 if (*msg) {
5236 vwprintw(status_win, msg, args);
5237 status_empty = FALSE;
5238 } else {
5239 status_empty = TRUE;
5240 }
5241 wclrtoeol(status_win);
5242 wrefresh(status_win);
5244 va_end(args);
5245 }
5247 update_view_title(view);
5248 update_display_cursor(view);
5249 }
5251 /* Controls when nodelay should be in effect when polling user input. */
5252 static void
5253 set_nonblocking_input(bool loading)
5254 {
5255 static unsigned int loading_views;
5257 if ((loading == FALSE && loading_views-- == 1) ||
5258 (loading == TRUE && loading_views++ == 0))
5259 nodelay(status_win, loading);
5260 }
5262 static void
5263 init_display(void)
5264 {
5265 int x, y;
5267 /* Initialize the curses library */
5268 if (isatty(STDIN_FILENO)) {
5269 cursed = !!initscr();
5270 } else {
5271 /* Leave stdin and stdout alone when acting as a pager. */
5272 FILE *io = fopen("/dev/tty", "r+");
5274 if (!io)
5275 die("Failed to open /dev/tty");
5276 cursed = !!newterm(NULL, io, io);
5277 }
5279 if (!cursed)
5280 die("Failed to initialize curses");
5282 nonl(); /* Tell curses not to do NL->CR/NL on output */
5283 cbreak(); /* Take input chars one at a time, no wait for \n */
5284 noecho(); /* Don't echo input */
5285 leaveok(stdscr, TRUE);
5287 if (has_colors())
5288 init_colors();
5290 getmaxyx(stdscr, y, x);
5291 status_win = newwin(1, 0, y - 1, 0);
5292 if (!status_win)
5293 die("Failed to create status window");
5295 /* Enable keyboard mapping */
5296 keypad(status_win, TRUE);
5297 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5298 }
5300 static char *
5301 read_prompt(const char *prompt)
5302 {
5303 enum { READING, STOP, CANCEL } status = READING;
5304 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
5305 int pos = 0;
5307 while (status == READING) {
5308 struct view *view;
5309 int i, key;
5311 input_mode = TRUE;
5313 foreach_view (view, i)
5314 update_view(view);
5316 input_mode = FALSE;
5318 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5319 wclrtoeol(status_win);
5321 /* Refresh, accept single keystroke of input */
5322 key = wgetch(status_win);
5323 switch (key) {
5324 case KEY_RETURN:
5325 case KEY_ENTER:
5326 case '\n':
5327 status = pos ? STOP : CANCEL;
5328 break;
5330 case KEY_BACKSPACE:
5331 if (pos > 0)
5332 pos--;
5333 else
5334 status = CANCEL;
5335 break;
5337 case KEY_ESC:
5338 status = CANCEL;
5339 break;
5341 case ERR:
5342 break;
5344 default:
5345 if (pos >= sizeof(buf)) {
5346 report("Input string too long");
5347 return NULL;
5348 }
5350 if (isprint(key))
5351 buf[pos++] = (char) key;
5352 }
5353 }
5355 /* Clear the status window */
5356 status_empty = FALSE;
5357 report("");
5359 if (status == CANCEL)
5360 return NULL;
5362 buf[pos++] = 0;
5364 return buf;
5365 }
5367 /*
5368 * Repository references
5369 */
5371 static struct ref *refs = NULL;
5372 static size_t refs_alloc = 0;
5373 static size_t refs_size = 0;
5375 /* Id <-> ref store */
5376 static struct ref ***id_refs = NULL;
5377 static size_t id_refs_alloc = 0;
5378 static size_t id_refs_size = 0;
5380 static struct ref **
5381 get_refs(char *id)
5382 {
5383 struct ref ***tmp_id_refs;
5384 struct ref **ref_list = NULL;
5385 size_t ref_list_alloc = 0;
5386 size_t ref_list_size = 0;
5387 size_t i;
5389 for (i = 0; i < id_refs_size; i++)
5390 if (!strcmp(id, id_refs[i][0]->id))
5391 return id_refs[i];
5393 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
5394 sizeof(*id_refs));
5395 if (!tmp_id_refs)
5396 return NULL;
5398 id_refs = tmp_id_refs;
5400 for (i = 0; i < refs_size; i++) {
5401 struct ref **tmp;
5403 if (strcmp(id, refs[i].id))
5404 continue;
5406 tmp = realloc_items(ref_list, &ref_list_alloc,
5407 ref_list_size + 1, sizeof(*ref_list));
5408 if (!tmp) {
5409 if (ref_list)
5410 free(ref_list);
5411 return NULL;
5412 }
5414 ref_list = tmp;
5415 if (ref_list_size > 0)
5416 ref_list[ref_list_size - 1]->next = 1;
5417 ref_list[ref_list_size] = &refs[i];
5419 /* XXX: The properties of the commit chains ensures that we can
5420 * safely modify the shared ref. The repo references will
5421 * always be similar for the same id. */
5422 ref_list[ref_list_size]->next = 0;
5423 ref_list_size++;
5424 }
5426 if (ref_list)
5427 id_refs[id_refs_size++] = ref_list;
5429 return ref_list;
5430 }
5432 static int
5433 read_ref(char *id, size_t idlen, char *name, size_t namelen)
5434 {
5435 struct ref *ref;
5436 bool tag = FALSE;
5437 bool ltag = FALSE;
5438 bool remote = FALSE;
5439 bool check_replace = FALSE;
5441 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
5442 if (!strcmp(name + namelen - 3, "^{}")) {
5443 namelen -= 3;
5444 name[namelen] = 0;
5445 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
5446 check_replace = TRUE;
5447 } else {
5448 ltag = TRUE;
5449 }
5451 tag = TRUE;
5452 namelen -= STRING_SIZE("refs/tags/");
5453 name += STRING_SIZE("refs/tags/");
5455 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
5456 remote = TRUE;
5457 namelen -= STRING_SIZE("refs/remotes/");
5458 name += STRING_SIZE("refs/remotes/");
5460 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5461 namelen -= STRING_SIZE("refs/heads/");
5462 name += STRING_SIZE("refs/heads/");
5464 } else if (!strcmp(name, "HEAD")) {
5465 return OK;
5466 }
5468 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
5469 /* it's an annotated tag, replace the previous sha1 with the
5470 * resolved commit id; relies on the fact git-ls-remote lists
5471 * the commit id of an annotated tag right beofre the commit id
5472 * it points to. */
5473 refs[refs_size - 1].ltag = ltag;
5474 string_copy_rev(refs[refs_size - 1].id, id);
5476 return OK;
5477 }
5478 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
5479 if (!refs)
5480 return ERR;
5482 ref = &refs[refs_size++];
5483 ref->name = malloc(namelen + 1);
5484 if (!ref->name)
5485 return ERR;
5487 strncpy(ref->name, name, namelen);
5488 ref->name[namelen] = 0;
5489 ref->tag = tag;
5490 ref->ltag = ltag;
5491 ref->remote = remote;
5492 string_copy_rev(ref->id, id);
5494 return OK;
5495 }
5497 static int
5498 load_refs(void)
5499 {
5500 const char *cmd_env = getenv("TIG_LS_REMOTE");
5501 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
5503 return read_properties(popen(cmd, "r"), "\t", read_ref);
5504 }
5506 static int
5507 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
5508 {
5509 if (!strcmp(name, "i18n.commitencoding"))
5510 string_ncopy(opt_encoding, value, valuelen);
5512 if (!strcmp(name, "core.editor"))
5513 string_ncopy(opt_editor, value, valuelen);
5515 return OK;
5516 }
5518 static int
5519 load_repo_config(void)
5520 {
5521 return read_properties(popen(GIT_CONFIG " --list", "r"),
5522 "=", read_repo_config_option);
5523 }
5525 static int
5526 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
5527 {
5528 if (!opt_git_dir[0]) {
5529 string_ncopy(opt_git_dir, name, namelen);
5531 } else if (opt_is_inside_work_tree == -1) {
5532 /* This can be 3 different values depending on the
5533 * version of git being used. If git-rev-parse does not
5534 * understand --is-inside-work-tree it will simply echo
5535 * the option else either "true" or "false" is printed.
5536 * Default to true for the unknown case. */
5537 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
5539 } else {
5540 string_ncopy(opt_cdup, name, namelen);
5541 }
5543 return OK;
5544 }
5546 /* XXX: The line outputted by "--show-cdup" can be empty so the option
5547 * must be the last one! */
5548 static int
5549 load_repo_info(void)
5550 {
5551 return read_properties(popen("git rev-parse --git-dir --is-inside-work-tree --show-cdup 2>/dev/null", "r"),
5552 "=", read_repo_info);
5553 }
5555 static int
5556 read_properties(FILE *pipe, const char *separators,
5557 int (*read_property)(char *, size_t, char *, size_t))
5558 {
5559 char buffer[BUFSIZ];
5560 char *name;
5561 int state = OK;
5563 if (!pipe)
5564 return ERR;
5566 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
5567 char *value;
5568 size_t namelen;
5569 size_t valuelen;
5571 name = chomp_string(name);
5572 namelen = strcspn(name, separators);
5574 if (name[namelen]) {
5575 name[namelen] = 0;
5576 value = chomp_string(name + namelen + 1);
5577 valuelen = strlen(value);
5579 } else {
5580 value = "";
5581 valuelen = 0;
5582 }
5584 state = read_property(name, namelen, value, valuelen);
5585 }
5587 if (state != ERR && ferror(pipe))
5588 state = ERR;
5590 pclose(pipe);
5592 return state;
5593 }
5596 /*
5597 * Main
5598 */
5600 static void __NORETURN
5601 quit(int sig)
5602 {
5603 /* XXX: Restore tty modes and let the OS cleanup the rest! */
5604 if (cursed)
5605 endwin();
5606 exit(0);
5607 }
5609 static void __NORETURN
5610 die(const char *err, ...)
5611 {
5612 va_list args;
5614 endwin();
5616 va_start(args, err);
5617 fputs("tig: ", stderr);
5618 vfprintf(stderr, err, args);
5619 fputs("\n", stderr);
5620 va_end(args);
5622 exit(1);
5623 }
5625 static void
5626 warn(const char *msg, ...)
5627 {
5628 va_list args;
5630 va_start(args, msg);
5631 fputs("tig warning: ", stderr);
5632 vfprintf(stderr, msg, args);
5633 fputs("\n", stderr);
5634 va_end(args);
5635 }
5637 int
5638 main(int argc, char *argv[])
5639 {
5640 struct view *view;
5641 enum request request;
5642 size_t i;
5644 signal(SIGINT, quit);
5646 if (setlocale(LC_ALL, "")) {
5647 char *codeset = nl_langinfo(CODESET);
5649 string_ncopy(opt_codeset, codeset, strlen(codeset));
5650 }
5652 if (load_repo_info() == ERR)
5653 die("Failed to load repo info.");
5655 if (load_options() == ERR)
5656 die("Failed to load user config.");
5658 /* Load the repo config file so options can be overwritten from
5659 * the command line. */
5660 if (load_repo_config() == ERR)
5661 die("Failed to load repo config.");
5663 if (!parse_options(argc, argv))
5664 return 0;
5666 /* Require a git repository unless when running in pager mode. */
5667 if (!opt_git_dir[0])
5668 die("Not a git repository");
5670 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
5671 opt_utf8 = FALSE;
5673 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
5674 opt_iconv = iconv_open(opt_codeset, opt_encoding);
5675 if (opt_iconv == ICONV_NONE)
5676 die("Failed to initialize character set conversion");
5677 }
5679 if (load_refs() == ERR)
5680 die("Failed to load refs.");
5682 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
5683 view->cmd_env = getenv(view->cmd_env);
5685 request = opt_request;
5687 init_display();
5689 while (view_driver(display[current_view], request)) {
5690 int key;
5691 int i;
5693 foreach_view (view, i)
5694 update_view(view);
5696 /* Refresh, accept single keystroke of input */
5697 key = wgetch(status_win);
5699 /* wgetch() with nodelay() enabled returns ERR when there's no
5700 * input. */
5701 if (key == ERR) {
5702 request = REQ_NONE;
5703 continue;
5704 }
5706 request = get_keybinding(display[current_view]->keymap, key);
5708 /* Some low-level request handling. This keeps access to
5709 * status_win restricted. */
5710 switch (request) {
5711 case REQ_PROMPT:
5712 {
5713 char *cmd = read_prompt(":");
5715 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
5716 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
5717 opt_request = REQ_VIEW_DIFF;
5718 } else {
5719 opt_request = REQ_VIEW_PAGER;
5720 }
5721 break;
5722 }
5724 request = REQ_NONE;
5725 break;
5726 }
5727 case REQ_SEARCH:
5728 case REQ_SEARCH_BACK:
5729 {
5730 const char *prompt = request == REQ_SEARCH
5731 ? "/" : "?";
5732 char *search = read_prompt(prompt);
5734 if (search)
5735 string_ncopy(opt_search, search, strlen(search));
5736 else
5737 request = REQ_NONE;
5738 break;
5739 }
5740 case REQ_SCREEN_RESIZE:
5741 {
5742 int height, width;
5744 getmaxyx(stdscr, height, width);
5746 /* Resize the status view and let the view driver take
5747 * care of resizing the displayed views. */
5748 wresize(status_win, 1, width);
5749 mvwin(status_win, height - 1, 0);
5750 wrefresh(status_win);
5751 break;
5752 }
5753 default:
5754 break;
5755 }
5756 }
5758 quit(0);
5760 return 0;
5761 }