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Fix bug introduced in commit for using --exclude-standard flag
[tig.git] / tig.c
blob84ac268b608bf38b6fd7828579136483ce3a5aec
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 */
13
14 #ifdef HAVE_CONFIG_H
15 #include "config.h"
16 #endif
17
18 #ifndef TIG_VERSION
19 #define TIG_VERSION "unknown-version"
20 #endif
21
22 #ifndef DEBUG
23 #define NDEBUG
24 #endif
25
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>
38
39 #include <regex.h>
40
41 #include <locale.h>
42 #include <langinfo.h>
43 #include <iconv.h>
44
45 /* ncurses(3): Must be defined to have extended wide-character functions. */
46 #define _XOPEN_SOURCE_EXTENDED
47
48 #ifdef HAVE_NCURSESW_NCURSES_H
49 #include <ncursesw/ncurses.h>
50 #else
51 #ifdef HAVE_NCURSES_NCURSES_H
52 #include <ncurses/ncurses.h>
53 #else
54 #include <ncurses.h>
55 #endif
56 #endif
57
58 #if __GNUC__ >= 3
59 #define __NORETURN __attribute__((__noreturn__))
60 #else
61 #define __NORETURN
62 #endif
63
64 static void __NORETURN die(const char *err, ...);
65 static void warn(const char *msg, ...);
66 static void report(const char *msg, ...);
67 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
68 static void set_nonblocking_input(bool loading);
69 static size_t utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve);
70 static bool prompt_yesno(const char *prompt);
71 static int load_refs(void);
72
73 #define ABS(x) ((x) >= 0 ? (x) : -(x))
74 #define MIN(x, y) ((x) < (y) ? (x) : (y))
75
76 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
77 #define STRING_SIZE(x) (sizeof(x) - 1)
78
79 #define SIZEOF_STR 1024 /* Default string size. */
80 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
81 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
82 #define SIZEOF_ARG 32 /* Default argument array size. */
83
84 /* Revision graph */
85
86 #define REVGRAPH_INIT 'I'
87 #define REVGRAPH_MERGE 'M'
88 #define REVGRAPH_BRANCH '+'
89 #define REVGRAPH_COMMIT '*'
90 #define REVGRAPH_BOUND '^'
91
92 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
93
94 /* This color name can be used to refer to the default term colors. */
95 #define COLOR_DEFAULT (-1)
96
97 #define ICONV_NONE ((iconv_t) -1)
98 #ifndef ICONV_CONST
99 #define ICONV_CONST /* nothing */
100 #endif
101
102 /* The format and size of the date column in the main view. */
103 #define DATE_FORMAT "%Y-%m-%d %H:%M"
104 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
105
106 #define AUTHOR_COLS 20
107 #define ID_COLS 8
108
109 /* The default interval between line numbers. */
110 #define NUMBER_INTERVAL 5
111
112 #define TAB_SIZE 8
113
114 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
115
116 #define NULL_ID "0000000000000000000000000000000000000000"
117
118 #ifndef GIT_CONFIG
119 #define GIT_CONFIG "config"
120 #endif
121
122 #define TIG_LS_REMOTE \
123 "git ls-remote . 2>/dev/null"
124
125 #define TIG_DIFF_CMD \
126 "git show --pretty=fuller --no-color --root --patch-with-stat --find-copies-harder -C %s 2>/dev/null"
127
128 #define TIG_LOG_CMD \
129 "git log --no-color --cc --stat -n100 %s 2>/dev/null"
130
131 #define TIG_MAIN_BASE \
132 "git log --no-color --pretty=raw --parents --topo-order"
133
134 #define TIG_MAIN_CMD \
135 TIG_MAIN_BASE " %s 2>/dev/null"
136
137 #define TIG_TREE_CMD \
138 "git ls-tree %s %s"
139
140 #define TIG_BLOB_CMD \
141 "git cat-file blob %s"
142
143 /* XXX: Needs to be defined to the empty string. */
144 #define TIG_HELP_CMD ""
145 #define TIG_PAGER_CMD ""
146 #define TIG_STATUS_CMD ""
147 #define TIG_STAGE_CMD ""
148 #define TIG_BLAME_CMD ""
149
150 /* Some ascii-shorthands fitted into the ncurses namespace. */
151 #define KEY_TAB '\t'
152 #define KEY_RETURN '\r'
153 #define KEY_ESC 27
154
155
156 struct ref {
157 char *name; /* Ref name; tag or head names are shortened. */
158 char id[SIZEOF_REV]; /* Commit SHA1 ID */
159 unsigned int head:1; /* Is it the current HEAD? */
160 unsigned int tag:1; /* Is it a tag? */
161 unsigned int ltag:1; /* If so, is the tag local? */
162 unsigned int remote:1; /* Is it a remote ref? */
163 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
164 unsigned int next:1; /* For ref lists: are there more refs? */
165 };
166
167 static struct ref **get_refs(char *id);
168
169 struct int_map {
170 const char *name;
171 int namelen;
172 int value;
173 };
174
175 static int
176 set_from_int_map(struct int_map *map, size_t map_size,
177 int *value, const char *name, int namelen)
178 {
179
180 int i;
181
182 for (i = 0; i < map_size; i++)
183 if (namelen == map[i].namelen &&
184 !strncasecmp(name, map[i].name, namelen)) {
185 *value = map[i].value;
186 return OK;
187 }
188
189 return ERR;
190 }
191
192
193 /*
194 * String helpers
195 */
196
197 static inline void
198 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
199 {
200 if (srclen > dstlen - 1)
201 srclen = dstlen - 1;
202
203 strncpy(dst, src, srclen);
204 dst[srclen] = 0;
205 }
206
207 /* Shorthands for safely copying into a fixed buffer. */
208
209 #define string_copy(dst, src) \
210 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
211
212 #define string_ncopy(dst, src, srclen) \
213 string_ncopy_do(dst, sizeof(dst), src, srclen)
214
215 #define string_copy_rev(dst, src) \
216 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
217
218 #define string_add(dst, from, src) \
219 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
220
221 static char *
222 chomp_string(char *name)
223 {
224 int namelen;
225
226 while (isspace(*name))
227 name++;
228
229 namelen = strlen(name) - 1;
230 while (namelen > 0 && isspace(name[namelen]))
231 name[namelen--] = 0;
232
233 return name;
234 }
235
236 static bool
237 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
238 {
239 va_list args;
240 size_t pos = bufpos ? *bufpos : 0;
241
242 va_start(args, fmt);
243 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
244 va_end(args);
245
246 if (bufpos)
247 *bufpos = pos;
248
249 return pos >= bufsize ? FALSE : TRUE;
250 }
251
252 #define string_format(buf, fmt, args...) \
253 string_nformat(buf, sizeof(buf), NULL, fmt, args)
254
255 #define string_format_from(buf, from, fmt, args...) \
256 string_nformat(buf, sizeof(buf), from, fmt, args)
257
258 static int
259 string_enum_compare(const char *str1, const char *str2, int len)
260 {
261 size_t i;
262
263 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
264
265 /* Diff-Header == DIFF_HEADER */
266 for (i = 0; i < len; i++) {
267 if (toupper(str1[i]) == toupper(str2[i]))
268 continue;
269
270 if (string_enum_sep(str1[i]) &&
271 string_enum_sep(str2[i]))
272 continue;
273
274 return str1[i] - str2[i];
275 }
276
277 return 0;
278 }
279
280 /* Shell quoting
281 *
282 * NOTE: The following is a slightly modified copy of the git project's shell
283 * quoting routines found in the quote.c file.
284 *
285 * Help to copy the thing properly quoted for the shell safety. any single
286 * quote is replaced with '\'', any exclamation point is replaced with '\!',
287 * and the whole thing is enclosed in a
288 *
289 * E.g.
290 * original sq_quote result
291 * name ==> name ==> 'name'
292 * a b ==> a b ==> 'a b'
293 * a'b ==> a'\''b ==> 'a'\''b'
294 * a!b ==> a'\!'b ==> 'a'\!'b'
295 */
296
297 static size_t
298 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
299 {
300 char c;
301
302 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
303
304 BUFPUT('\'');
305 while ((c = *src++)) {
306 if (c == '\'' || c == '!') {
307 BUFPUT('\'');
308 BUFPUT('\\');
309 BUFPUT(c);
310 BUFPUT('\'');
311 } else {
312 BUFPUT(c);
313 }
314 }
315 BUFPUT('\'');
316
317 if (bufsize < SIZEOF_STR)
318 buf[bufsize] = 0;
319
320 return bufsize;
321 }
322
323
324 /*
325 * User requests
326 */
327
328 #define REQ_INFO \
329 /* XXX: Keep the view request first and in sync with views[]. */ \
330 REQ_GROUP("View switching") \
331 REQ_(VIEW_MAIN, "Show main view"), \
332 REQ_(VIEW_DIFF, "Show diff view"), \
333 REQ_(VIEW_LOG, "Show log view"), \
334 REQ_(VIEW_TREE, "Show tree view"), \
335 REQ_(VIEW_BLOB, "Show blob view"), \
336 REQ_(VIEW_BLAME, "Show blame view"), \
337 REQ_(VIEW_HELP, "Show help page"), \
338 REQ_(VIEW_PAGER, "Show pager view"), \
339 REQ_(VIEW_STATUS, "Show status view"), \
340 REQ_(VIEW_STAGE, "Show stage view"), \
341 \
342 REQ_GROUP("View manipulation") \
343 REQ_(ENTER, "Enter current line and scroll"), \
344 REQ_(NEXT, "Move to next"), \
345 REQ_(PREVIOUS, "Move to previous"), \
346 REQ_(VIEW_NEXT, "Move focus to next view"), \
347 REQ_(REFRESH, "Reload and refresh"), \
348 REQ_(MAXIMIZE, "Maximize the current view"), \
349 REQ_(VIEW_CLOSE, "Close the current view"), \
350 REQ_(QUIT, "Close all views and quit"), \
351 \
352 REQ_GROUP("Cursor navigation") \
353 REQ_(MOVE_UP, "Move cursor one line up"), \
354 REQ_(MOVE_DOWN, "Move cursor one line down"), \
355 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
356 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
357 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
358 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
359 \
360 REQ_GROUP("Scrolling") \
361 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
362 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
363 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
364 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
365 \
366 REQ_GROUP("Searching") \
367 REQ_(SEARCH, "Search the view"), \
368 REQ_(SEARCH_BACK, "Search backwards in the view"), \
369 REQ_(FIND_NEXT, "Find next search match"), \
370 REQ_(FIND_PREV, "Find previous search match"), \
371 \
372 REQ_GROUP("Misc") \
373 REQ_(PROMPT, "Bring up the prompt"), \
374 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
375 REQ_(SCREEN_RESIZE, "Resize the screen"), \
376 REQ_(SHOW_VERSION, "Show version information"), \
377 REQ_(STOP_LOADING, "Stop all loading views"), \
378 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
379 REQ_(TOGGLE_DATE, "Toggle date display"), \
380 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
381 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
382 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
383 REQ_(STATUS_UPDATE, "Update file status"), \
384 REQ_(STATUS_CHECKOUT, "Checkout file"), \
385 REQ_(STATUS_MERGE, "Merge file using external tool"), \
386 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
387 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
388 REQ_(EDIT, "Open in editor"), \
389 REQ_(NONE, "Do nothing")
390
391
392 /* User action requests. */
393 enum request {
394 #define REQ_GROUP(help)
395 #define REQ_(req, help) REQ_##req
396
397 /* Offset all requests to avoid conflicts with ncurses getch values. */
398 REQ_OFFSET = KEY_MAX + 1,
399 REQ_INFO
400
401 #undef REQ_GROUP
402 #undef REQ_
403 };
404
405 struct request_info {
406 enum request request;
407 char *name;
408 int namelen;
409 char *help;
410 };
411
412 static struct request_info req_info[] = {
413 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
414 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
415 REQ_INFO
416 #undef REQ_GROUP
417 #undef REQ_
418 };
419
420 static enum request
421 get_request(const char *name)
422 {
423 int namelen = strlen(name);
424 int i;
425
426 for (i = 0; i < ARRAY_SIZE(req_info); i++)
427 if (req_info[i].namelen == namelen &&
428 !string_enum_compare(req_info[i].name, name, namelen))
429 return req_info[i].request;
430
431 return REQ_NONE;
432 }
433
434
435 /*
436 * Options
437 */
438
439 static const char usage[] =
440 "tig " TIG_VERSION " (" __DATE__ ")\n"
441 "\n"
442 "Usage: tig [options] [revs] [--] [paths]\n"
443 " or: tig show [options] [revs] [--] [paths]\n"
444 " or: tig blame [rev] path\n"
445 " or: tig status\n"
446 " or: tig < [git command output]\n"
447 "\n"
448 "Options:\n"
449 " -v, --version Show version and exit\n"
450 " -h, --help Show help message and exit";
451
452 /* Option and state variables. */
453 static bool opt_date = TRUE;
454 static bool opt_author = TRUE;
455 static bool opt_line_number = FALSE;
456 static bool opt_line_graphics = TRUE;
457 static bool opt_rev_graph = FALSE;
458 static bool opt_show_refs = TRUE;
459 static int opt_num_interval = NUMBER_INTERVAL;
460 static int opt_tab_size = TAB_SIZE;
461 static int opt_author_cols = AUTHOR_COLS-1;
462 static char opt_cmd[SIZEOF_STR] = "";
463 static char opt_path[SIZEOF_STR] = "";
464 static char opt_file[SIZEOF_STR] = "";
465 static char opt_ref[SIZEOF_REF] = "";
466 static char opt_head[SIZEOF_REF] = "";
467 static char opt_remote[SIZEOF_REF] = "";
468 static bool opt_no_head = TRUE;
469 static FILE *opt_pipe = NULL;
470 static char opt_encoding[20] = "UTF-8";
471 static bool opt_utf8 = TRUE;
472 static char opt_codeset[20] = "UTF-8";
473 static iconv_t opt_iconv = ICONV_NONE;
474 static char opt_search[SIZEOF_STR] = "";
475 static char opt_cdup[SIZEOF_STR] = "";
476 static char opt_git_dir[SIZEOF_STR] = "";
477 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
478 static char opt_editor[SIZEOF_STR] = "";
479
480 static enum request
481 parse_options(int argc, char *argv[])
482 {
483 enum request request = REQ_VIEW_MAIN;
484 size_t buf_size;
485 char *subcommand;
486 bool seen_dashdash = FALSE;
487 int i;
488
489 if (!isatty(STDIN_FILENO)) {
490 opt_pipe = stdin;
491 return REQ_VIEW_PAGER;
492 }
493
494 if (argc <= 1)
495 return REQ_VIEW_MAIN;
496
497 subcommand = argv[1];
498 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
499 if (!strcmp(subcommand, "-S"))
500 warn("`-S' has been deprecated; use `tig status' instead");
501 if (argc > 2)
502 warn("ignoring arguments after `%s'", subcommand);
503 return REQ_VIEW_STATUS;
504
505 } else if (!strcmp(subcommand, "blame")) {
506 if (argc <= 2 || argc > 4)
507 die("invalid number of options to blame\n\n%s", usage);
508
509 i = 2;
510 if (argc == 4) {
511 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
512 i++;
513 }
514
515 string_ncopy(opt_file, argv[i], strlen(argv[i]));
516 return REQ_VIEW_BLAME;
517
518 } else if (!strcmp(subcommand, "show")) {
519 request = REQ_VIEW_DIFF;
520
521 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
522 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
523 warn("`tig %s' has been deprecated", subcommand);
524
525 } else {
526 subcommand = NULL;
527 }
528
529 if (!subcommand)
530 /* XXX: This is vulnerable to the user overriding
531 * options required for the main view parser. */
532 string_copy(opt_cmd, TIG_MAIN_BASE);
533 else
534 string_format(opt_cmd, "git %s", subcommand);
535
536 buf_size = strlen(opt_cmd);
537
538 for (i = 1 + !!subcommand; i < argc; i++) {
539 char *opt = argv[i];
540
541 if (seen_dashdash || !strcmp(opt, "--")) {
542 seen_dashdash = TRUE;
543
544 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
545 printf("tig version %s\n", TIG_VERSION);
546 return REQ_NONE;
547
548 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
549 printf("%s\n", usage);
550 return REQ_NONE;
551 }
552
553 opt_cmd[buf_size++] = ' ';
554 buf_size = sq_quote(opt_cmd, buf_size, opt);
555 if (buf_size >= sizeof(opt_cmd))
556 die("command too long");
557 }
558
559 opt_cmd[buf_size] = 0;
560
561 return request;
562 }
563
564
565 /*
566 * Line-oriented content detection.
567 */
568
569 #define LINE_INFO \
570 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
571 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
572 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
574 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
575 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
576 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
577 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
578 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
579 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
580 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
583 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
584 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
585 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
586 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
587 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
588 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
589 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
590 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
591 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
592 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
593 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
594 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
595 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
596 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
597 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
598 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
599 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
600 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
601 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
602 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
603 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
604 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
605 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
606 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
607 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
608 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
609 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
610 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
611 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
612 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
613 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
614 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
615 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
616 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
617 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
618 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
619 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
620 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
621 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
622 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
623 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
624
625 enum line_type {
626 #define LINE(type, line, fg, bg, attr) \
627 LINE_##type
628 LINE_INFO,
629 LINE_NONE
630 #undef LINE
631 };
632
633 struct line_info {
634 const char *name; /* Option name. */
635 int namelen; /* Size of option name. */
636 const char *line; /* The start of line to match. */
637 int linelen; /* Size of string to match. */
638 int fg, bg, attr; /* Color and text attributes for the lines. */
639 };
640
641 static struct line_info line_info[] = {
642 #define LINE(type, line, fg, bg, attr) \
643 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
644 LINE_INFO
645 #undef LINE
646 };
647
648 static enum line_type
649 get_line_type(const char *line)
650 {
651 int linelen = strlen(line);
652 enum line_type type;
653
654 for (type = 0; type < ARRAY_SIZE(line_info); type++)
655 /* Case insensitive search matches Signed-off-by lines better. */
656 if (linelen >= line_info[type].linelen &&
657 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
658 return type;
659
660 return LINE_DEFAULT;
661 }
662
663 static inline int
664 get_line_attr(enum line_type type)
665 {
666 assert(type < ARRAY_SIZE(line_info));
667 return COLOR_PAIR(type) | line_info[type].attr;
668 }
669
670 static struct line_info *
671 get_line_info(const char *name)
672 {
673 size_t namelen = strlen(name);
674 enum line_type type;
675
676 for (type = 0; type < ARRAY_SIZE(line_info); type++)
677 if (namelen == line_info[type].namelen &&
678 !string_enum_compare(line_info[type].name, name, namelen))
679 return &line_info[type];
680
681 return NULL;
682 }
683
684 static void
685 init_colors(void)
686 {
687 int default_bg = line_info[LINE_DEFAULT].bg;
688 int default_fg = line_info[LINE_DEFAULT].fg;
689 enum line_type type;
690
691 start_color();
692
693 if (assume_default_colors(default_fg, default_bg) == ERR) {
694 default_bg = COLOR_BLACK;
695 default_fg = COLOR_WHITE;
696 }
697
698 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
699 struct line_info *info = &line_info[type];
700 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
701 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
702
703 init_pair(type, fg, bg);
704 }
705 }
706
707 struct line {
708 enum line_type type;
709
710 /* State flags */
711 unsigned int selected:1;
712 unsigned int dirty:1;
713
714 void *data; /* User data */
715 };
716
717
718 /*
719 * Keys
720 */
721
722 struct keybinding {
723 int alias;
724 enum request request;
725 struct keybinding *next;
726 };
727
728 static struct keybinding default_keybindings[] = {
729 /* View switching */
730 { 'm', REQ_VIEW_MAIN },
731 { 'd', REQ_VIEW_DIFF },
732 { 'l', REQ_VIEW_LOG },
733 { 't', REQ_VIEW_TREE },
734 { 'f', REQ_VIEW_BLOB },
735 { 'B', REQ_VIEW_BLAME },
736 { 'p', REQ_VIEW_PAGER },
737 { 'h', REQ_VIEW_HELP },
738 { 'S', REQ_VIEW_STATUS },
739 { 'c', REQ_VIEW_STAGE },
740
741 /* View manipulation */
742 { 'q', REQ_VIEW_CLOSE },
743 { KEY_TAB, REQ_VIEW_NEXT },
744 { KEY_RETURN, REQ_ENTER },
745 { KEY_UP, REQ_PREVIOUS },
746 { KEY_DOWN, REQ_NEXT },
747 { 'R', REQ_REFRESH },
748 { KEY_F(5), REQ_REFRESH },
749 { 'O', REQ_MAXIMIZE },
750
751 /* Cursor navigation */
752 { 'k', REQ_MOVE_UP },
753 { 'j', REQ_MOVE_DOWN },
754 { KEY_HOME, REQ_MOVE_FIRST_LINE },
755 { KEY_END, REQ_MOVE_LAST_LINE },
756 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
757 { ' ', REQ_MOVE_PAGE_DOWN },
758 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
759 { 'b', REQ_MOVE_PAGE_UP },
760 { '-', REQ_MOVE_PAGE_UP },
761
762 /* Scrolling */
763 { KEY_IC, REQ_SCROLL_LINE_UP },
764 { KEY_DC, REQ_SCROLL_LINE_DOWN },
765 { 'w', REQ_SCROLL_PAGE_UP },
766 { 's', REQ_SCROLL_PAGE_DOWN },
767
768 /* Searching */
769 { '/', REQ_SEARCH },
770 { '?', REQ_SEARCH_BACK },
771 { 'n', REQ_FIND_NEXT },
772 { 'N', REQ_FIND_PREV },
773
774 /* Misc */
775 { 'Q', REQ_QUIT },
776 { 'z', REQ_STOP_LOADING },
777 { 'v', REQ_SHOW_VERSION },
778 { 'r', REQ_SCREEN_REDRAW },
779 { '.', REQ_TOGGLE_LINENO },
780 { 'D', REQ_TOGGLE_DATE },
781 { 'A', REQ_TOGGLE_AUTHOR },
782 { 'g', REQ_TOGGLE_REV_GRAPH },
783 { 'F', REQ_TOGGLE_REFS },
784 { ':', REQ_PROMPT },
785 { 'u', REQ_STATUS_UPDATE },
786 { '!', REQ_STATUS_CHECKOUT },
787 { 'M', REQ_STATUS_MERGE },
788 { '@', REQ_STAGE_NEXT },
789 { ',', REQ_TREE_PARENT },
790 { 'e', REQ_EDIT },
791
792 /* Using the ncurses SIGWINCH handler. */
793 { KEY_RESIZE, REQ_SCREEN_RESIZE },
794 };
795
796 #define KEYMAP_INFO \
797 KEYMAP_(GENERIC), \
798 KEYMAP_(MAIN), \
799 KEYMAP_(DIFF), \
800 KEYMAP_(LOG), \
801 KEYMAP_(TREE), \
802 KEYMAP_(BLOB), \
803 KEYMAP_(BLAME), \
804 KEYMAP_(PAGER), \
805 KEYMAP_(HELP), \
806 KEYMAP_(STATUS), \
807 KEYMAP_(STAGE)
808
809 enum keymap {
810 #define KEYMAP_(name) KEYMAP_##name
811 KEYMAP_INFO
812 #undef KEYMAP_
813 };
814
815 static struct int_map keymap_table[] = {
816 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
817 KEYMAP_INFO
818 #undef KEYMAP_
819 };
820
821 #define set_keymap(map, name) \
822 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
823
824 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
825
826 static void
827 add_keybinding(enum keymap keymap, enum request request, int key)
828 {
829 struct keybinding *keybinding;
830
831 keybinding = calloc(1, sizeof(*keybinding));
832 if (!keybinding)
833 die("Failed to allocate keybinding");
834
835 keybinding->alias = key;
836 keybinding->request = request;
837 keybinding->next = keybindings[keymap];
838 keybindings[keymap] = keybinding;
839 }
840
841 /* Looks for a key binding first in the given map, then in the generic map, and
842 * lastly in the default keybindings. */
843 static enum request
844 get_keybinding(enum keymap keymap, int key)
845 {
846 struct keybinding *kbd;
847 int i;
848
849 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
850 if (kbd->alias == key)
851 return kbd->request;
852
853 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
854 if (kbd->alias == key)
855 return kbd->request;
856
857 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
858 if (default_keybindings[i].alias == key)
859 return default_keybindings[i].request;
860
861 return (enum request) key;
862 }
863
864
865 struct key {
866 char *name;
867 int value;
868 };
869
870 static struct key key_table[] = {
871 { "Enter", KEY_RETURN },
872 { "Space", ' ' },
873 { "Backspace", KEY_BACKSPACE },
874 { "Tab", KEY_TAB },
875 { "Escape", KEY_ESC },
876 { "Left", KEY_LEFT },
877 { "Right", KEY_RIGHT },
878 { "Up", KEY_UP },
879 { "Down", KEY_DOWN },
880 { "Insert", KEY_IC },
881 { "Delete", KEY_DC },
882 { "Hash", '#' },
883 { "Home", KEY_HOME },
884 { "End", KEY_END },
885 { "PageUp", KEY_PPAGE },
886 { "PageDown", KEY_NPAGE },
887 { "F1", KEY_F(1) },
888 { "F2", KEY_F(2) },
889 { "F3", KEY_F(3) },
890 { "F4", KEY_F(4) },
891 { "F5", KEY_F(5) },
892 { "F6", KEY_F(6) },
893 { "F7", KEY_F(7) },
894 { "F8", KEY_F(8) },
895 { "F9", KEY_F(9) },
896 { "F10", KEY_F(10) },
897 { "F11", KEY_F(11) },
898 { "F12", KEY_F(12) },
899 };
900
901 static int
902 get_key_value(const char *name)
903 {
904 int i;
905
906 for (i = 0; i < ARRAY_SIZE(key_table); i++)
907 if (!strcasecmp(key_table[i].name, name))
908 return key_table[i].value;
909
910 if (strlen(name) == 1 && isprint(*name))
911 return (int) *name;
912
913 return ERR;
914 }
915
916 static char *
917 get_key_name(int key_value)
918 {
919 static char key_char[] = "'X'";
920 char *seq = NULL;
921 int key;
922
923 for (key = 0; key < ARRAY_SIZE(key_table); key++)
924 if (key_table[key].value == key_value)
925 seq = key_table[key].name;
926
927 if (seq == NULL &&
928 key_value < 127 &&
929 isprint(key_value)) {
930 key_char[1] = (char) key_value;
931 seq = key_char;
932 }
933
934 return seq ? seq : "'?'";
935 }
936
937 static char *
938 get_key(enum request request)
939 {
940 static char buf[BUFSIZ];
941 size_t pos = 0;
942 char *sep = "";
943 int i;
944
945 buf[pos] = 0;
946
947 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
948 struct keybinding *keybinding = &default_keybindings[i];
949
950 if (keybinding->request != request)
951 continue;
952
953 if (!string_format_from(buf, &pos, "%s%s", sep,
954 get_key_name(keybinding->alias)))
955 return "Too many keybindings!";
956 sep = ", ";
957 }
958
959 return buf;
960 }
961
962 struct run_request {
963 enum keymap keymap;
964 int key;
965 char cmd[SIZEOF_STR];
966 };
967
968 static struct run_request *run_request;
969 static size_t run_requests;
970
971 static enum request
972 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
973 {
974 struct run_request *req;
975 char cmd[SIZEOF_STR];
976 size_t bufpos;
977
978 for (bufpos = 0; argc > 0; argc--, argv++)
979 if (!string_format_from(cmd, &bufpos, "%s ", *argv))
980 return REQ_NONE;
981
982 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
983 if (!req)
984 return REQ_NONE;
985
986 run_request = req;
987 req = &run_request[run_requests++];
988 string_copy(req->cmd, cmd);
989 req->keymap = keymap;
990 req->key = key;
991
992 return REQ_NONE + run_requests;
993 }
994
995 static struct run_request *
996 get_run_request(enum request request)
997 {
998 if (request <= REQ_NONE)
999 return NULL;
1000 return &run_request[request - REQ_NONE - 1];
1001 }
1002
1003 static void
1004 add_builtin_run_requests(void)
1005 {
1006 struct {
1007 enum keymap keymap;
1008 int key;
1009 const char *argv[1];
1010 } reqs[] = {
1011 { KEYMAP_MAIN, 'C', { "git cherry-pick %(commit)" } },
1012 { KEYMAP_GENERIC, 'G', { "git gc" } },
1013 };
1014 int i;
1015
1016 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1017 enum request req;
1018
1019 req = add_run_request(reqs[i].keymap, reqs[i].key, 1, reqs[i].argv);
1020 if (req != REQ_NONE)
1021 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1022 }
1023 }
1024
1025 /*
1026 * User config file handling.
1027 */
1028
1029 static struct int_map color_map[] = {
1030 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1031 COLOR_MAP(DEFAULT),
1032 COLOR_MAP(BLACK),
1033 COLOR_MAP(BLUE),
1034 COLOR_MAP(CYAN),
1035 COLOR_MAP(GREEN),
1036 COLOR_MAP(MAGENTA),
1037 COLOR_MAP(RED),
1038 COLOR_MAP(WHITE),
1039 COLOR_MAP(YELLOW),
1040 };
1041
1042 #define set_color(color, name) \
1043 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1044
1045 static struct int_map attr_map[] = {
1046 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1047 ATTR_MAP(NORMAL),
1048 ATTR_MAP(BLINK),
1049 ATTR_MAP(BOLD),
1050 ATTR_MAP(DIM),
1051 ATTR_MAP(REVERSE),
1052 ATTR_MAP(STANDOUT),
1053 ATTR_MAP(UNDERLINE),
1054 };
1055
1056 #define set_attribute(attr, name) \
1057 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1058
1059 static int config_lineno;
1060 static bool config_errors;
1061 static char *config_msg;
1062
1063 /* Wants: object fgcolor bgcolor [attr] */
1064 static int
1065 option_color_command(int argc, const char *argv[])
1066 {
1067 struct line_info *info;
1068
1069 if (argc != 3 && argc != 4) {
1070 config_msg = "Wrong number of arguments given to color command";
1071 return ERR;
1072 }
1073
1074 info = get_line_info(argv[0]);
1075 if (!info) {
1076 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1077 info = get_line_info("delimiter");
1078
1079 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1080 info = get_line_info("date");
1081
1082 } else {
1083 config_msg = "Unknown color name";
1084 return ERR;
1085 }
1086 }
1087
1088 if (set_color(&info->fg, argv[1]) == ERR ||
1089 set_color(&info->bg, argv[2]) == ERR) {
1090 config_msg = "Unknown color";
1091 return ERR;
1092 }
1093
1094 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1095 config_msg = "Unknown attribute";
1096 return ERR;
1097 }
1098
1099 return OK;
1100 }
1101
1102 static bool parse_bool(const char *s)
1103 {
1104 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1105 !strcmp(s, "yes")) ? TRUE : FALSE;
1106 }
1107
1108 static int
1109 parse_int(const char *s, int default_value, int min, int max)
1110 {
1111 int value = atoi(s);
1112
1113 return (value < min || value > max) ? default_value : value;
1114 }
1115
1116 /* Wants: name = value */
1117 static int
1118 option_set_command(int argc, const char *argv[])
1119 {
1120 if (argc != 3) {
1121 config_msg = "Wrong number of arguments given to set command";
1122 return ERR;
1123 }
1124
1125 if (strcmp(argv[1], "=")) {
1126 config_msg = "No value assigned";
1127 return ERR;
1128 }
1129
1130 if (!strcmp(argv[0], "show-author")) {
1131 opt_author = parse_bool(argv[2]);
1132 return OK;
1133 }
1134
1135 if (!strcmp(argv[0], "show-date")) {
1136 opt_date = parse_bool(argv[2]);
1137 return OK;
1138 }
1139
1140 if (!strcmp(argv[0], "show-rev-graph")) {
1141 opt_rev_graph = parse_bool(argv[2]);
1142 return OK;
1143 }
1144
1145 if (!strcmp(argv[0], "show-refs")) {
1146 opt_show_refs = parse_bool(argv[2]);
1147 return OK;
1148 }
1149
1150 if (!strcmp(argv[0], "show-line-numbers")) {
1151 opt_line_number = parse_bool(argv[2]);
1152 return OK;
1153 }
1154
1155 if (!strcmp(argv[0], "line-graphics")) {
1156 opt_line_graphics = parse_bool(argv[2]);
1157 return OK;
1158 }
1159
1160 if (!strcmp(argv[0], "line-number-interval")) {
1161 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1162 return OK;
1163 }
1164
1165 if (!strcmp(argv[0], "author-width")) {
1166 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1167 return OK;
1168 }
1169
1170 if (!strcmp(argv[0], "tab-size")) {
1171 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1172 return OK;
1173 }
1174
1175 if (!strcmp(argv[0], "commit-encoding")) {
1176 const char *arg = argv[2];
1177 int arglen = strlen(arg);
1178
1179 switch (arg[0]) {
1180 case '"':
1181 case '\'':
1182 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1183 config_msg = "Unmatched quotation";
1184 return ERR;
1185 }
1186 arg += 1; arglen -= 2;
1187 default:
1188 string_ncopy(opt_encoding, arg, strlen(arg));
1189 return OK;
1190 }
1191 }
1192
1193 config_msg = "Unknown variable name";
1194 return ERR;
1195 }
1196
1197 /* Wants: mode request key */
1198 static int
1199 option_bind_command(int argc, const char *argv[])
1200 {
1201 enum request request;
1202 int keymap;
1203 int key;
1204
1205 if (argc < 3) {
1206 config_msg = "Wrong number of arguments given to bind command";
1207 return ERR;
1208 }
1209
1210 if (set_keymap(&keymap, argv[0]) == ERR) {
1211 config_msg = "Unknown key map";
1212 return ERR;
1213 }
1214
1215 key = get_key_value(argv[1]);
1216 if (key == ERR) {
1217 config_msg = "Unknown key";
1218 return ERR;
1219 }
1220
1221 request = get_request(argv[2]);
1222 if (request == REQ_NONE) {
1223 const char *obsolete[] = { "cherry-pick" };
1224 size_t namelen = strlen(argv[2]);
1225 int i;
1226
1227 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1228 if (namelen == strlen(obsolete[i]) &&
1229 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1230 config_msg = "Obsolete request name";
1231 return ERR;
1232 }
1233 }
1234 }
1235 if (request == REQ_NONE && *argv[2]++ == '!')
1236 request = add_run_request(keymap, key, argc - 2, argv + 2);
1237 if (request == REQ_NONE) {
1238 config_msg = "Unknown request name";
1239 return ERR;
1240 }
1241
1242 add_keybinding(keymap, request, key);
1243
1244 return OK;
1245 }
1246
1247 static int
1248 set_option(char *opt, char *value)
1249 {
1250 const char *argv[SIZEOF_ARG];
1251 int valuelen;
1252 int argc = 0;
1253
1254 /* Tokenize */
1255 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1256 argv[argc++] = value;
1257 value += valuelen;
1258
1259 /* Nothing more to tokenize or last available token. */
1260 if (!*value || argc >= ARRAY_SIZE(argv))
1261 break;
1262
1263 *value++ = 0;
1264 while (isspace(*value))
1265 value++;
1266 }
1267
1268 if (!strcmp(opt, "color"))
1269 return option_color_command(argc, argv);
1270
1271 if (!strcmp(opt, "set"))
1272 return option_set_command(argc, argv);
1273
1274 if (!strcmp(opt, "bind"))
1275 return option_bind_command(argc, argv);
1276
1277 config_msg = "Unknown option command";
1278 return ERR;
1279 }
1280
1281 static int
1282 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1283 {
1284 int status = OK;
1285
1286 config_lineno++;
1287 config_msg = "Internal error";
1288
1289 /* Check for comment markers, since read_properties() will
1290 * only ensure opt and value are split at first " \t". */
1291 optlen = strcspn(opt, "#");
1292 if (optlen == 0)
1293 return OK;
1294
1295 if (opt[optlen] != 0) {
1296 config_msg = "No option value";
1297 status = ERR;
1298
1299 } else {
1300 /* Look for comment endings in the value. */
1301 size_t len = strcspn(value, "#");
1302
1303 if (len < valuelen) {
1304 valuelen = len;
1305 value[valuelen] = 0;
1306 }
1307
1308 status = set_option(opt, value);
1309 }
1310
1311 if (status == ERR) {
1312 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1313 config_lineno, (int) optlen, opt, config_msg);
1314 config_errors = TRUE;
1315 }
1316
1317 /* Always keep going if errors are encountered. */
1318 return OK;
1319 }
1320
1321 static void
1322 load_option_file(const char *path)
1323 {
1324 FILE *file;
1325
1326 /* It's ok that the file doesn't exist. */
1327 file = fopen(path, "r");
1328 if (!file)
1329 return;
1330
1331 config_lineno = 0;
1332 config_errors = FALSE;
1333
1334 if (read_properties(file, " \t", read_option) == ERR ||
1335 config_errors == TRUE)
1336 fprintf(stderr, "Errors while loading %s.\n", path);
1337 }
1338
1339 static int
1340 load_options(void)
1341 {
1342 char *home = getenv("HOME");
1343 char *tigrc_user = getenv("TIGRC_USER");
1344 char *tigrc_system = getenv("TIGRC_SYSTEM");
1345 char buf[SIZEOF_STR];
1346
1347 add_builtin_run_requests();
1348
1349 if (!tigrc_system) {
1350 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1351 return ERR;
1352 tigrc_system = buf;
1353 }
1354 load_option_file(tigrc_system);
1355
1356 if (!tigrc_user) {
1357 if (!home || !string_format(buf, "%s/.tigrc", home))
1358 return ERR;
1359 tigrc_user = buf;
1360 }
1361 load_option_file(tigrc_user);
1362
1363 return OK;
1364 }
1365
1366
1367 /*
1368 * The viewer
1369 */
1370
1371 struct view;
1372 struct view_ops;
1373
1374 /* The display array of active views and the index of the current view. */
1375 static struct view *display[2];
1376 static unsigned int current_view;
1377
1378 /* Reading from the prompt? */
1379 static bool input_mode = FALSE;
1380
1381 #define foreach_displayed_view(view, i) \
1382 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1383
1384 #define displayed_views() (display[1] != NULL ? 2 : 1)
1385
1386 /* Current head and commit ID */
1387 static char ref_blob[SIZEOF_REF] = "";
1388 static char ref_commit[SIZEOF_REF] = "HEAD";
1389 static char ref_head[SIZEOF_REF] = "HEAD";
1390
1391 struct view {
1392 const char *name; /* View name */
1393 const char *cmd_fmt; /* Default command line format */
1394 const char *cmd_env; /* Command line set via environment */
1395 const char *id; /* Points to either of ref_{head,commit,blob} */
1396
1397 struct view_ops *ops; /* View operations */
1398
1399 enum keymap keymap; /* What keymap does this view have */
1400 bool git_dir; /* Whether the view requires a git directory. */
1401
1402 char cmd[SIZEOF_STR]; /* Command buffer */
1403 char ref[SIZEOF_REF]; /* Hovered commit reference */
1404 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1405
1406 int height, width; /* The width and height of the main window */
1407 WINDOW *win; /* The main window */
1408 WINDOW *title; /* The title window living below the main window */
1409
1410 /* Navigation */
1411 unsigned long offset; /* Offset of the window top */
1412 unsigned long lineno; /* Current line number */
1413
1414 /* Searching */
1415 char grep[SIZEOF_STR]; /* Search string */
1416 regex_t *regex; /* Pre-compiled regex */
1417
1418 /* If non-NULL, points to the view that opened this view. If this view
1419 * is closed tig will switch back to the parent view. */
1420 struct view *parent;
1421
1422 /* Buffering */
1423 size_t lines; /* Total number of lines */
1424 struct line *line; /* Line index */
1425 size_t line_alloc; /* Total number of allocated lines */
1426 size_t line_size; /* Total number of used lines */
1427 unsigned int digits; /* Number of digits in the lines member. */
1428
1429 /* Drawing */
1430 struct line *curline; /* Line currently being drawn. */
1431 enum line_type curtype; /* Attribute currently used for drawing. */
1432 unsigned long col; /* Column when drawing. */
1433
1434 /* Loading */
1435 FILE *pipe;
1436 time_t start_time;
1437 };
1438
1439 struct view_ops {
1440 /* What type of content being displayed. Used in the title bar. */
1441 const char *type;
1442 /* Open and reads in all view content. */
1443 bool (*open)(struct view *view);
1444 /* Read one line; updates view->line. */
1445 bool (*read)(struct view *view, char *data);
1446 /* Draw one line; @lineno must be < view->height. */
1447 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1448 /* Depending on view handle a special requests. */
1449 enum request (*request)(struct view *view, enum request request, struct line *line);
1450 /* Search for regex in a line. */
1451 bool (*grep)(struct view *view, struct line *line);
1452 /* Select line */
1453 void (*select)(struct view *view, struct line *line);
1454 };
1455
1456 static struct view_ops blame_ops;
1457 static struct view_ops blob_ops;
1458 static struct view_ops help_ops;
1459 static struct view_ops log_ops;
1460 static struct view_ops main_ops;
1461 static struct view_ops pager_ops;
1462 static struct view_ops stage_ops;
1463 static struct view_ops status_ops;
1464 static struct view_ops tree_ops;
1465
1466 #define VIEW_STR(name, cmd, env, ref, ops, map, git) \
1467 { name, cmd, #env, ref, ops, map, git }
1468
1469 #define VIEW_(id, name, ops, git, ref) \
1470 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1471
1472
1473 static struct view views[] = {
1474 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1475 VIEW_(DIFF, "diff", &pager_ops, TRUE, ref_commit),
1476 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1477 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1478 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1479 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1480 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1481 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1482 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1483 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1484 };
1485
1486 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1487 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1488
1489 #define foreach_view(view, i) \
1490 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1491
1492 #define view_is_displayed(view) \
1493 (view == display[0] || view == display[1])
1494
1495
1496 enum line_graphic {
1497 LINE_GRAPHIC_VLINE
1498 };
1499
1500 static int line_graphics[] = {
1501 /* LINE_GRAPHIC_VLINE: */ '|'
1502 };
1503
1504 static inline void
1505 set_view_attr(struct view *view, enum line_type type)
1506 {
1507 if (!view->curline->selected && view->curtype != type) {
1508 wattrset(view->win, get_line_attr(type));
1509 wchgat(view->win, -1, 0, type, NULL);
1510 view->curtype = type;
1511 }
1512 }
1513
1514 static int
1515 draw_chars(struct view *view, enum line_type type, const char *string,
1516 int max_len, bool use_tilde)
1517 {
1518 int len = 0;
1519 int col = 0;
1520 int trimmed = FALSE;
1521
1522 if (max_len <= 0)
1523 return 0;
1524
1525 if (opt_utf8) {
1526 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1527 } else {
1528 col = len = strlen(string);
1529 if (len > max_len) {
1530 if (use_tilde) {
1531 max_len -= 1;
1532 }
1533 col = len = max_len;
1534 trimmed = TRUE;
1535 }
1536 }
1537
1538 set_view_attr(view, type);
1539 waddnstr(view->win, string, len);
1540 if (trimmed && use_tilde) {
1541 set_view_attr(view, LINE_DELIMITER);
1542 waddch(view->win, '~');
1543 col++;
1544 }
1545
1546 return col;
1547 }
1548
1549 static int
1550 draw_space(struct view *view, enum line_type type, int max, int spaces)
1551 {
1552 static char space[] = " ";
1553 int col = 0;
1554
1555 spaces = MIN(max, spaces);
1556
1557 while (spaces > 0) {
1558 int len = MIN(spaces, sizeof(space) - 1);
1559
1560 col += draw_chars(view, type, space, spaces, FALSE);
1561 spaces -= len;
1562 }
1563
1564 return col;
1565 }
1566
1567 static bool
1568 draw_lineno(struct view *view, unsigned int lineno)
1569 {
1570 char number[10];
1571 int digits3 = view->digits < 3 ? 3 : view->digits;
1572 int max_number = MIN(digits3, STRING_SIZE(number));
1573 int max = view->width - view->col;
1574 int col;
1575
1576 if (max < max_number)
1577 max_number = max;
1578
1579 lineno += view->offset + 1;
1580 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1581 static char fmt[] = "%1ld";
1582
1583 if (view->digits <= 9)
1584 fmt[1] = '0' + digits3;
1585
1586 if (!string_format(number, fmt, lineno))
1587 number[0] = 0;
1588 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1589 } else {
1590 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1591 }
1592
1593 if (col < max) {
1594 set_view_attr(view, LINE_DEFAULT);
1595 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1596 col++;
1597 }
1598
1599 if (col < max)
1600 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1601 view->col += col;
1602
1603 return view->width - view->col <= 0;
1604 }
1605
1606 static bool
1607 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1608 {
1609 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1610 return view->width - view->col <= 0;
1611 }
1612
1613 static bool
1614 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1615 {
1616 int max = view->width - view->col;
1617 int i;
1618
1619 if (max < size)
1620 size = max;
1621
1622 set_view_attr(view, type);
1623 /* Using waddch() instead of waddnstr() ensures that
1624 * they'll be rendered correctly for the cursor line. */
1625 for (i = 0; i < size; i++)
1626 waddch(view->win, graphic[i]);
1627
1628 view->col += size;
1629 if (size < max) {
1630 waddch(view->win, ' ');
1631 view->col++;
1632 }
1633
1634 return view->width - view->col <= 0;
1635 }
1636
1637 static bool
1638 draw_field(struct view *view, enum line_type type, char *text, int len, bool trim)
1639 {
1640 int max = MIN(view->width - view->col, len);
1641 int col;
1642
1643 if (text)
1644 col = draw_chars(view, type, text, max - 1, trim);
1645 else
1646 col = draw_space(view, type, max - 1, max - 1);
1647
1648 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1649 return view->width - view->col <= 0;
1650 }
1651
1652 static bool
1653 draw_date(struct view *view, struct tm *time)
1654 {
1655 char buf[DATE_COLS];
1656 char *date;
1657 int timelen = 0;
1658
1659 if (time)
1660 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1661 date = timelen ? buf : NULL;
1662
1663 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1664 }
1665
1666 static bool
1667 draw_view_line(struct view *view, unsigned int lineno)
1668 {
1669 struct line *line;
1670 bool selected = (view->offset + lineno == view->lineno);
1671 bool draw_ok;
1672
1673 assert(view_is_displayed(view));
1674
1675 if (view->offset + lineno >= view->lines)
1676 return FALSE;
1677
1678 line = &view->line[view->offset + lineno];
1679
1680 wmove(view->win, lineno, 0);
1681 view->col = 0;
1682 view->curline = line;
1683 view->curtype = LINE_NONE;
1684 line->selected = FALSE;
1685
1686 if (selected) {
1687 set_view_attr(view, LINE_CURSOR);
1688 line->selected = TRUE;
1689 view->ops->select(view, line);
1690 } else if (line->selected) {
1691 wclrtoeol(view->win);
1692 }
1693
1694 scrollok(view->win, FALSE);
1695 draw_ok = view->ops->draw(view, line, lineno);
1696 scrollok(view->win, TRUE);
1697
1698 return draw_ok;
1699 }
1700
1701 static void
1702 redraw_view_dirty(struct view *view)
1703 {
1704 bool dirty = FALSE;
1705 int lineno;
1706
1707 for (lineno = 0; lineno < view->height; lineno++) {
1708 struct line *line = &view->line[view->offset + lineno];
1709
1710 if (!line->dirty)
1711 continue;
1712 line->dirty = 0;
1713 dirty = TRUE;
1714 if (!draw_view_line(view, lineno))
1715 break;
1716 }
1717
1718 if (!dirty)
1719 return;
1720 redrawwin(view->win);
1721 if (input_mode)
1722 wnoutrefresh(view->win);
1723 else
1724 wrefresh(view->win);
1725 }
1726
1727 static void
1728 redraw_view_from(struct view *view, int lineno)
1729 {
1730 assert(0 <= lineno && lineno < view->height);
1731
1732 for (; lineno < view->height; lineno++) {
1733 if (!draw_view_line(view, lineno))
1734 break;
1735 }
1736
1737 redrawwin(view->win);
1738 if (input_mode)
1739 wnoutrefresh(view->win);
1740 else
1741 wrefresh(view->win);
1742 }
1743
1744 static void
1745 redraw_view(struct view *view)
1746 {
1747 wclear(view->win);
1748 redraw_view_from(view, 0);
1749 }
1750
1751
1752 static void
1753 update_view_title(struct view *view)
1754 {
1755 char buf[SIZEOF_STR];
1756 char state[SIZEOF_STR];
1757 size_t bufpos = 0, statelen = 0;
1758
1759 assert(view_is_displayed(view));
1760
1761 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1762 unsigned int view_lines = view->offset + view->height;
1763 unsigned int lines = view->lines
1764 ? MIN(view_lines, view->lines) * 100 / view->lines
1765 : 0;
1766
1767 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1768 view->ops->type,
1769 view->lineno + 1,
1770 view->lines,
1771 lines);
1772
1773 if (view->pipe) {
1774 time_t secs = time(NULL) - view->start_time;
1775
1776 /* Three git seconds are a long time ... */
1777 if (secs > 2)
1778 string_format_from(state, &statelen, " %lds", secs);
1779 }
1780 }
1781
1782 string_format_from(buf, &bufpos, "[%s]", view->name);
1783 if (*view->ref && bufpos < view->width) {
1784 size_t refsize = strlen(view->ref);
1785 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1786
1787 if (minsize < view->width)
1788 refsize = view->width - minsize + 7;
1789 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1790 }
1791
1792 if (statelen && bufpos < view->width) {
1793 string_format_from(buf, &bufpos, " %s", state);
1794 }
1795
1796 if (view == display[current_view])
1797 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1798 else
1799 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1800
1801 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1802 wclrtoeol(view->title);
1803 wmove(view->title, 0, view->width - 1);
1804
1805 if (input_mode)
1806 wnoutrefresh(view->title);
1807 else
1808 wrefresh(view->title);
1809 }
1810
1811 static void
1812 resize_display(void)
1813 {
1814 int offset, i;
1815 struct view *base = display[0];
1816 struct view *view = display[1] ? display[1] : display[0];
1817
1818 /* Setup window dimensions */
1819
1820 getmaxyx(stdscr, base->height, base->width);
1821
1822 /* Make room for the status window. */
1823 base->height -= 1;
1824
1825 if (view != base) {
1826 /* Horizontal split. */
1827 view->width = base->width;
1828 view->height = SCALE_SPLIT_VIEW(base->height);
1829 base->height -= view->height;
1830
1831 /* Make room for the title bar. */
1832 view->height -= 1;
1833 }
1834
1835 /* Make room for the title bar. */
1836 base->height -= 1;
1837
1838 offset = 0;
1839
1840 foreach_displayed_view (view, i) {
1841 if (!view->win) {
1842 view->win = newwin(view->height, 0, offset, 0);
1843 if (!view->win)
1844 die("Failed to create %s view", view->name);
1845
1846 scrollok(view->win, TRUE);
1847
1848 view->title = newwin(1, 0, offset + view->height, 0);
1849 if (!view->title)
1850 die("Failed to create title window");
1851
1852 } else {
1853 wresize(view->win, view->height, view->width);
1854 mvwin(view->win, offset, 0);
1855 mvwin(view->title, offset + view->height, 0);
1856 }
1857
1858 offset += view->height + 1;
1859 }
1860 }
1861
1862 static void
1863 redraw_display(void)
1864 {
1865 struct view *view;
1866 int i;
1867
1868 foreach_displayed_view (view, i) {
1869 redraw_view(view);
1870 update_view_title(view);
1871 }
1872 }
1873
1874 static void
1875 update_display_cursor(struct view *view)
1876 {
1877 /* Move the cursor to the right-most column of the cursor line.
1878 *
1879 * XXX: This could turn out to be a bit expensive, but it ensures that
1880 * the cursor does not jump around. */
1881 if (view->lines) {
1882 wmove(view->win, view->lineno - view->offset, view->width - 1);
1883 wrefresh(view->win);
1884 }
1885 }
1886
1887 /*
1888 * Navigation
1889 */
1890
1891 /* Scrolling backend */
1892 static void
1893 do_scroll_view(struct view *view, int lines)
1894 {
1895 bool redraw_current_line = FALSE;
1896
1897 /* The rendering expects the new offset. */
1898 view->offset += lines;
1899
1900 assert(0 <= view->offset && view->offset < view->lines);
1901 assert(lines);
1902
1903 /* Move current line into the view. */
1904 if (view->lineno < view->offset) {
1905 view->lineno = view->offset;
1906 redraw_current_line = TRUE;
1907 } else if (view->lineno >= view->offset + view->height) {
1908 view->lineno = view->offset + view->height - 1;
1909 redraw_current_line = TRUE;
1910 }
1911
1912 assert(view->offset <= view->lineno && view->lineno < view->lines);
1913
1914 /* Redraw the whole screen if scrolling is pointless. */
1915 if (view->height < ABS(lines)) {
1916 redraw_view(view);
1917
1918 } else {
1919 int line = lines > 0 ? view->height - lines : 0;
1920 int end = line + ABS(lines);
1921
1922 wscrl(view->win, lines);
1923
1924 for (; line < end; line++) {
1925 if (!draw_view_line(view, line))
1926 break;
1927 }
1928
1929 if (redraw_current_line)
1930 draw_view_line(view, view->lineno - view->offset);
1931 }
1932
1933 redrawwin(view->win);
1934 wrefresh(view->win);
1935 report("");
1936 }
1937
1938 /* Scroll frontend */
1939 static void
1940 scroll_view(struct view *view, enum request request)
1941 {
1942 int lines = 1;
1943
1944 assert(view_is_displayed(view));
1945
1946 switch (request) {
1947 case REQ_SCROLL_PAGE_DOWN:
1948 lines = view->height;
1949 case REQ_SCROLL_LINE_DOWN:
1950 if (view->offset + lines > view->lines)
1951 lines = view->lines - view->offset;
1952
1953 if (lines == 0 || view->offset + view->height >= view->lines) {
1954 report("Cannot scroll beyond the last line");
1955 return;
1956 }
1957 break;
1958
1959 case REQ_SCROLL_PAGE_UP:
1960 lines = view->height;
1961 case REQ_SCROLL_LINE_UP:
1962 if (lines > view->offset)
1963 lines = view->offset;
1964
1965 if (lines == 0) {
1966 report("Cannot scroll beyond the first line");
1967 return;
1968 }
1969
1970 lines = -lines;
1971 break;
1972
1973 default:
1974 die("request %d not handled in switch", request);
1975 }
1976
1977 do_scroll_view(view, lines);
1978 }
1979
1980 /* Cursor moving */
1981 static void
1982 move_view(struct view *view, enum request request)
1983 {
1984 int scroll_steps = 0;
1985 int steps;
1986
1987 switch (request) {
1988 case REQ_MOVE_FIRST_LINE:
1989 steps = -view->lineno;
1990 break;
1991
1992 case REQ_MOVE_LAST_LINE:
1993 steps = view->lines - view->lineno - 1;
1994 break;
1995
1996 case REQ_MOVE_PAGE_UP:
1997 steps = view->height > view->lineno
1998 ? -view->lineno : -view->height;
1999 break;
2000
2001 case REQ_MOVE_PAGE_DOWN:
2002 steps = view->lineno + view->height >= view->lines
2003 ? view->lines - view->lineno - 1 : view->height;
2004 break;
2005
2006 case REQ_MOVE_UP:
2007 steps = -1;
2008 break;
2009
2010 case REQ_MOVE_DOWN:
2011 steps = 1;
2012 break;
2013
2014 default:
2015 die("request %d not handled in switch", request);
2016 }
2017
2018 if (steps <= 0 && view->lineno == 0) {
2019 report("Cannot move beyond the first line");
2020 return;
2021
2022 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2023 report("Cannot move beyond the last line");
2024 return;
2025 }
2026
2027 /* Move the current line */
2028 view->lineno += steps;
2029 assert(0 <= view->lineno && view->lineno < view->lines);
2030
2031 /* Check whether the view needs to be scrolled */
2032 if (view->lineno < view->offset ||
2033 view->lineno >= view->offset + view->height) {
2034 scroll_steps = steps;
2035 if (steps < 0 && -steps > view->offset) {
2036 scroll_steps = -view->offset;
2037
2038 } else if (steps > 0) {
2039 if (view->lineno == view->lines - 1 &&
2040 view->lines > view->height) {
2041 scroll_steps = view->lines - view->offset - 1;
2042 if (scroll_steps >= view->height)
2043 scroll_steps -= view->height - 1;
2044 }
2045 }
2046 }
2047
2048 if (!view_is_displayed(view)) {
2049 view->offset += scroll_steps;
2050 assert(0 <= view->offset && view->offset < view->lines);
2051 view->ops->select(view, &view->line[view->lineno]);
2052 return;
2053 }
2054
2055 /* Repaint the old "current" line if we be scrolling */
2056 if (ABS(steps) < view->height)
2057 draw_view_line(view, view->lineno - steps - view->offset);
2058
2059 if (scroll_steps) {
2060 do_scroll_view(view, scroll_steps);
2061 return;
2062 }
2063
2064 /* Draw the current line */
2065 draw_view_line(view, view->lineno - view->offset);
2066
2067 redrawwin(view->win);
2068 wrefresh(view->win);
2069 report("");
2070 }
2071
2072
2073 /*
2074 * Searching
2075 */
2076
2077 static void search_view(struct view *view, enum request request);
2078
2079 static bool
2080 find_next_line(struct view *view, unsigned long lineno, struct line *line)
2081 {
2082 assert(view_is_displayed(view));
2083
2084 if (!view->ops->grep(view, line))
2085 return FALSE;
2086
2087 if (lineno - view->offset >= view->height) {
2088 view->offset = lineno;
2089 view->lineno = lineno;
2090 redraw_view(view);
2091
2092 } else {
2093 unsigned long old_lineno = view->lineno - view->offset;
2094
2095 view->lineno = lineno;
2096 draw_view_line(view, old_lineno);
2097
2098 draw_view_line(view, view->lineno - view->offset);
2099 redrawwin(view->win);
2100 wrefresh(view->win);
2101 }
2102
2103 report("Line %ld matches '%s'", lineno + 1, view->grep);
2104 return TRUE;
2105 }
2106
2107 static void
2108 find_next(struct view *view, enum request request)
2109 {
2110 unsigned long lineno = view->lineno;
2111 int direction;
2112
2113 if (!*view->grep) {
2114 if (!*opt_search)
2115 report("No previous search");
2116 else
2117 search_view(view, request);
2118 return;
2119 }
2120
2121 switch (request) {
2122 case REQ_SEARCH:
2123 case REQ_FIND_NEXT:
2124 direction = 1;
2125 break;
2126
2127 case REQ_SEARCH_BACK:
2128 case REQ_FIND_PREV:
2129 direction = -1;
2130 break;
2131
2132 default:
2133 return;
2134 }
2135
2136 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2137 lineno += direction;
2138
2139 /* Note, lineno is unsigned long so will wrap around in which case it
2140 * will become bigger than view->lines. */
2141 for (; lineno < view->lines; lineno += direction) {
2142 struct line *line = &view->line[lineno];
2143
2144 if (find_next_line(view, lineno, line))
2145 return;
2146 }
2147
2148 report("No match found for '%s'", view->grep);
2149 }
2150
2151 static void
2152 search_view(struct view *view, enum request request)
2153 {
2154 int regex_err;
2155
2156 if (view->regex) {
2157 regfree(view->regex);
2158 *view->grep = 0;
2159 } else {
2160 view->regex = calloc(1, sizeof(*view->regex));
2161 if (!view->regex)
2162 return;
2163 }
2164
2165 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2166 if (regex_err != 0) {
2167 char buf[SIZEOF_STR] = "unknown error";
2168
2169 regerror(regex_err, view->regex, buf, sizeof(buf));
2170 report("Search failed: %s", buf);
2171 return;
2172 }
2173
2174 string_copy(view->grep, opt_search);
2175
2176 find_next(view, request);
2177 }
2178
2179 /*
2180 * Incremental updating
2181 */
2182
2183 static void
2184 end_update(struct view *view, bool force)
2185 {
2186 if (!view->pipe)
2187 return;
2188 while (!view->ops->read(view, NULL))
2189 if (!force)
2190 return;
2191 set_nonblocking_input(FALSE);
2192 if (view->pipe == stdin)
2193 fclose(view->pipe);
2194 else
2195 pclose(view->pipe);
2196 view->pipe = NULL;
2197 }
2198
2199 static bool
2200 begin_update(struct view *view, bool refresh)
2201 {
2202 if (opt_cmd[0]) {
2203 string_copy(view->cmd, opt_cmd);
2204 opt_cmd[0] = 0;
2205 /* When running random commands, initially show the
2206 * command in the title. However, it maybe later be
2207 * overwritten if a commit line is selected. */
2208 if (view == VIEW(REQ_VIEW_PAGER))
2209 string_copy(view->ref, view->cmd);
2210 else
2211 view->ref[0] = 0;
2212
2213 } else if (view == VIEW(REQ_VIEW_TREE)) {
2214 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2215 char path[SIZEOF_STR];
2216
2217 if (strcmp(view->vid, view->id))
2218 opt_path[0] = path[0] = 0;
2219 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
2220 return FALSE;
2221
2222 if (!string_format(view->cmd, format, view->id, path))
2223 return FALSE;
2224
2225 } else if (!refresh) {
2226 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2227 const char *id = view->id;
2228
2229 if (!string_format(view->cmd, format, id, id, id, id, id))
2230 return FALSE;
2231
2232 /* Put the current ref_* value to the view title ref
2233 * member. This is needed by the blob view. Most other
2234 * views sets it automatically after loading because the
2235 * first line is a commit line. */
2236 string_copy_rev(view->ref, view->id);
2237 }
2238
2239 /* Special case for the pager view. */
2240 if (opt_pipe) {
2241 view->pipe = opt_pipe;
2242 opt_pipe = NULL;
2243 } else {
2244 view->pipe = popen(view->cmd, "r");
2245 }
2246
2247 if (!view->pipe)
2248 return FALSE;
2249
2250 set_nonblocking_input(TRUE);
2251
2252 view->offset = 0;
2253 view->lines = 0;
2254 view->lineno = 0;
2255 string_copy_rev(view->vid, view->id);
2256
2257 if (view->line) {
2258 int i;
2259
2260 for (i = 0; i < view->lines; i++)
2261 if (view->line[i].data)
2262 free(view->line[i].data);
2263
2264 free(view->line);
2265 view->line = NULL;
2266 }
2267
2268 view->start_time = time(NULL);
2269
2270 return TRUE;
2271 }
2272
2273 #define ITEM_CHUNK_SIZE 256
2274 static void *
2275 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2276 {
2277 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2278 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2279
2280 if (mem == NULL || num_chunks != num_chunks_new) {
2281 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2282 mem = realloc(mem, *size * item_size);
2283 }
2284
2285 return mem;
2286 }
2287
2288 static struct line *
2289 realloc_lines(struct view *view, size_t line_size)
2290 {
2291 size_t alloc = view->line_alloc;
2292 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2293 sizeof(*view->line));
2294
2295 if (!tmp)
2296 return NULL;
2297
2298 view->line = tmp;
2299 view->line_alloc = alloc;
2300 view->line_size = line_size;
2301 return view->line;
2302 }
2303
2304 static bool
2305 update_view(struct view *view)
2306 {
2307 char in_buffer[BUFSIZ];
2308 char out_buffer[BUFSIZ * 2];
2309 char *line;
2310 /* The number of lines to read. If too low it will cause too much
2311 * redrawing (and possible flickering), if too high responsiveness
2312 * will suffer. */
2313 unsigned long lines = view->height;
2314 int redraw_from = -1;
2315
2316 if (!view->pipe)
2317 return TRUE;
2318
2319 /* Only redraw if lines are visible. */
2320 if (view->offset + view->height >= view->lines)
2321 redraw_from = view->lines - view->offset;
2322
2323 /* FIXME: This is probably not perfect for backgrounded views. */
2324 if (!realloc_lines(view, view->lines + lines))
2325 goto alloc_error;
2326
2327 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
2328 size_t linelen = strlen(line);
2329
2330 if (linelen)
2331 line[linelen - 1] = 0;
2332
2333 if (opt_iconv != ICONV_NONE) {
2334 ICONV_CONST char *inbuf = line;
2335 size_t inlen = linelen;
2336
2337 char *outbuf = out_buffer;
2338 size_t outlen = sizeof(out_buffer);
2339
2340 size_t ret;
2341
2342 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2343 if (ret != (size_t) -1) {
2344 line = out_buffer;
2345 linelen = strlen(out_buffer);
2346 }
2347 }
2348
2349 if (!view->ops->read(view, line))
2350 goto alloc_error;
2351
2352 if (lines-- == 1)
2353 break;
2354 }
2355
2356 {
2357 int digits;
2358
2359 lines = view->lines;
2360 for (digits = 0; lines; digits++)
2361 lines /= 10;
2362
2363 /* Keep the displayed view in sync with line number scaling. */
2364 if (digits != view->digits) {
2365 view->digits = digits;
2366 redraw_from = 0;
2367 }
2368 }
2369
2370 if (!view_is_displayed(view))
2371 goto check_pipe;
2372
2373 if (view == VIEW(REQ_VIEW_TREE)) {
2374 /* Clear the view and redraw everything since the tree sorting
2375 * might have rearranged things. */
2376 redraw_view(view);
2377
2378 } else if (redraw_from >= 0) {
2379 /* If this is an incremental update, redraw the previous line
2380 * since for commits some members could have changed when
2381 * loading the main view. */
2382 if (redraw_from > 0)
2383 redraw_from--;
2384
2385 /* Since revision graph visualization requires knowledge
2386 * about the parent commit, it causes a further one-off
2387 * needed to be redrawn for incremental updates. */
2388 if (redraw_from > 0 && opt_rev_graph)
2389 redraw_from--;
2390
2391 /* Incrementally draw avoids flickering. */
2392 redraw_view_from(view, redraw_from);
2393 }
2394
2395 if (view == VIEW(REQ_VIEW_BLAME))
2396 redraw_view_dirty(view);
2397
2398 /* Update the title _after_ the redraw so that if the redraw picks up a
2399 * commit reference in view->ref it'll be available here. */
2400 update_view_title(view);
2401
2402 check_pipe:
2403 if (ferror(view->pipe) && errno != 0) {
2404 report("Failed to read: %s", strerror(errno));
2405 end_update(view, TRUE);
2406
2407 } else if (feof(view->pipe)) {
2408 report("");
2409 end_update(view, FALSE);
2410 }
2411
2412 return TRUE;
2413
2414 alloc_error:
2415 report("Allocation failure");
2416 end_update(view, TRUE);
2417 return FALSE;
2418 }
2419
2420 static struct line *
2421 add_line_data(struct view *view, void *data, enum line_type type)
2422 {
2423 struct line *line = &view->line[view->lines++];
2424
2425 memset(line, 0, sizeof(*line));
2426 line->type = type;
2427 line->data = data;
2428
2429 return line;
2430 }
2431
2432 static struct line *
2433 add_line_text(struct view *view, char *data, enum line_type type)
2434 {
2435 if (data)
2436 data = strdup(data);
2437
2438 return data ? add_line_data(view, data, type) : NULL;
2439 }
2440
2441
2442 /*
2443 * View opening
2444 */
2445
2446 enum open_flags {
2447 OPEN_DEFAULT = 0, /* Use default view switching. */
2448 OPEN_SPLIT = 1, /* Split current view. */
2449 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2450 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2451 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2452 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2453 };
2454
2455 static void
2456 open_view(struct view *prev, enum request request, enum open_flags flags)
2457 {
2458 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2459 bool split = !!(flags & OPEN_SPLIT);
2460 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH));
2461 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2462 struct view *view = VIEW(request);
2463 int nviews = displayed_views();
2464 struct view *base_view = display[0];
2465
2466 if (view == prev && nviews == 1 && !reload) {
2467 report("Already in %s view", view->name);
2468 return;
2469 }
2470
2471 if (view->git_dir && !opt_git_dir[0]) {
2472 report("The %s view is disabled in pager view", view->name);
2473 return;
2474 }
2475
2476 if (split) {
2477 display[1] = view;
2478 if (!backgrounded)
2479 current_view = 1;
2480 } else if (!nomaximize) {
2481 /* Maximize the current view. */
2482 memset(display, 0, sizeof(display));
2483 current_view = 0;
2484 display[current_view] = view;
2485 }
2486
2487 /* Resize the view when switching between split- and full-screen,
2488 * or when switching between two different full-screen views. */
2489 if (nviews != displayed_views() ||
2490 (nviews == 1 && base_view != display[0]))
2491 resize_display();
2492
2493 if (view->pipe)
2494 end_update(view, TRUE);
2495
2496 if (view->ops->open) {
2497 if (!view->ops->open(view)) {
2498 report("Failed to load %s view", view->name);
2499 return;
2500 }
2501
2502 } else if ((reload || strcmp(view->vid, view->id)) &&
2503 !begin_update(view, flags & OPEN_REFRESH)) {
2504 report("Failed to load %s view", view->name);
2505 return;
2506 }
2507
2508 if (split && prev->lineno - prev->offset >= prev->height) {
2509 /* Take the title line into account. */
2510 int lines = prev->lineno - prev->offset - prev->height + 1;
2511
2512 /* Scroll the view that was split if the current line is
2513 * outside the new limited view. */
2514 do_scroll_view(prev, lines);
2515 }
2516
2517 if (prev && view != prev) {
2518 if (split && !backgrounded) {
2519 /* "Blur" the previous view. */
2520 update_view_title(prev);
2521 }
2522
2523 view->parent = prev;
2524 }
2525
2526 if (view->pipe && view->lines == 0) {
2527 /* Clear the old view and let the incremental updating refill
2528 * the screen. */
2529 werase(view->win);
2530 report("");
2531 } else {
2532 redraw_view(view);
2533 report("");
2534 }
2535
2536 /* If the view is backgrounded the above calls to report()
2537 * won't redraw the view title. */
2538 if (backgrounded)
2539 update_view_title(view);
2540 }
2541
2542 static bool
2543 run_confirm(const char *cmd, const char *prompt)
2544 {
2545 bool confirmation = prompt_yesno(prompt);
2546
2547 if (confirmation)
2548 system(cmd);
2549
2550 return confirmation;
2551 }
2552
2553 static void
2554 open_external_viewer(const char *cmd)
2555 {
2556 def_prog_mode(); /* save current tty modes */
2557 endwin(); /* restore original tty modes */
2558 system(cmd);
2559 fprintf(stderr, "Press Enter to continue");
2560 getc(stdin);
2561 reset_prog_mode();
2562 redraw_display();
2563 }
2564
2565 static void
2566 open_mergetool(const char *file)
2567 {
2568 char cmd[SIZEOF_STR];
2569 char file_sq[SIZEOF_STR];
2570
2571 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2572 string_format(cmd, "git mergetool %s", file_sq)) {
2573 open_external_viewer(cmd);
2574 }
2575 }
2576
2577 static void
2578 open_editor(bool from_root, const char *file)
2579 {
2580 char cmd[SIZEOF_STR];
2581 char file_sq[SIZEOF_STR];
2582 char *editor;
2583 char *prefix = from_root ? opt_cdup : "";
2584
2585 editor = getenv("GIT_EDITOR");
2586 if (!editor && *opt_editor)
2587 editor = opt_editor;
2588 if (!editor)
2589 editor = getenv("VISUAL");
2590 if (!editor)
2591 editor = getenv("EDITOR");
2592 if (!editor)
2593 editor = "vi";
2594
2595 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2596 string_format(cmd, "%s %s%s", editor, prefix, file_sq)) {
2597 open_external_viewer(cmd);
2598 }
2599 }
2600
2601 static void
2602 open_run_request(enum request request)
2603 {
2604 struct run_request *req = get_run_request(request);
2605 char buf[SIZEOF_STR * 2];
2606 size_t bufpos;
2607 char *cmd;
2608
2609 if (!req) {
2610 report("Unknown run request");
2611 return;
2612 }
2613
2614 bufpos = 0;
2615 cmd = req->cmd;
2616
2617 while (cmd) {
2618 char *next = strstr(cmd, "%(");
2619 int len = next - cmd;
2620 char *value;
2621
2622 if (!next) {
2623 len = strlen(cmd);
2624 value = "";
2625
2626 } else if (!strncmp(next, "%(head)", 7)) {
2627 value = ref_head;
2628
2629 } else if (!strncmp(next, "%(commit)", 9)) {
2630 value = ref_commit;
2631
2632 } else if (!strncmp(next, "%(blob)", 7)) {
2633 value = ref_blob;
2634
2635 } else {
2636 report("Unknown replacement in run request: `%s`", req->cmd);
2637 return;
2638 }
2639
2640 if (!string_format_from(buf, &bufpos, "%.*s%s", len, cmd, value))
2641 return;
2642
2643 if (next)
2644 next = strchr(next, ')') + 1;
2645 cmd = next;
2646 }
2647
2648 open_external_viewer(buf);
2649 }
2650
2651 /*
2652 * User request switch noodle
2653 */
2654
2655 static int
2656 view_driver(struct view *view, enum request request)
2657 {
2658 int i;
2659
2660 if (request == REQ_NONE) {
2661 doupdate();
2662 return TRUE;
2663 }
2664
2665 if (request > REQ_NONE) {
2666 open_run_request(request);
2667 /* FIXME: When all views can refresh always do this. */
2668 if (view == VIEW(REQ_VIEW_STATUS) ||
2669 view == VIEW(REQ_VIEW_MAIN) ||
2670 view == VIEW(REQ_VIEW_LOG) ||
2671 view == VIEW(REQ_VIEW_STAGE))
2672 request = REQ_REFRESH;
2673 else
2674 return TRUE;
2675 }
2676
2677 if (view && view->lines) {
2678 request = view->ops->request(view, request, &view->line[view->lineno]);
2679 if (request == REQ_NONE)
2680 return TRUE;
2681 }
2682
2683 switch (request) {
2684 case REQ_MOVE_UP:
2685 case REQ_MOVE_DOWN:
2686 case REQ_MOVE_PAGE_UP:
2687 case REQ_MOVE_PAGE_DOWN:
2688 case REQ_MOVE_FIRST_LINE:
2689 case REQ_MOVE_LAST_LINE:
2690 move_view(view, request);
2691 break;
2692
2693 case REQ_SCROLL_LINE_DOWN:
2694 case REQ_SCROLL_LINE_UP:
2695 case REQ_SCROLL_PAGE_DOWN:
2696 case REQ_SCROLL_PAGE_UP:
2697 scroll_view(view, request);
2698 break;
2699
2700 case REQ_VIEW_BLAME:
2701 if (!opt_file[0]) {
2702 report("No file chosen, press %s to open tree view",
2703 get_key(REQ_VIEW_TREE));
2704 break;
2705 }
2706 open_view(view, request, OPEN_DEFAULT);
2707 break;
2708
2709 case REQ_VIEW_BLOB:
2710 if (!ref_blob[0]) {
2711 report("No file chosen, press %s to open tree view",
2712 get_key(REQ_VIEW_TREE));
2713 break;
2714 }
2715 open_view(view, request, OPEN_DEFAULT);
2716 break;
2717
2718 case REQ_VIEW_PAGER:
2719 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2720 report("No pager content, press %s to run command from prompt",
2721 get_key(REQ_PROMPT));
2722 break;
2723 }
2724 open_view(view, request, OPEN_DEFAULT);
2725 break;
2726
2727 case REQ_VIEW_STAGE:
2728 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2729 report("No stage content, press %s to open the status view and choose file",
2730 get_key(REQ_VIEW_STATUS));
2731 break;
2732 }
2733 open_view(view, request, OPEN_DEFAULT);
2734 break;
2735
2736 case REQ_VIEW_STATUS:
2737 if (opt_is_inside_work_tree == FALSE) {
2738 report("The status view requires a working tree");
2739 break;
2740 }
2741 open_view(view, request, OPEN_DEFAULT);
2742 break;
2743
2744 case REQ_VIEW_MAIN:
2745 case REQ_VIEW_DIFF:
2746 case REQ_VIEW_LOG:
2747 case REQ_VIEW_TREE:
2748 case REQ_VIEW_HELP:
2749 open_view(view, request, OPEN_DEFAULT);
2750 break;
2751
2752 case REQ_NEXT:
2753 case REQ_PREVIOUS:
2754 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2755
2756 if ((view == VIEW(REQ_VIEW_DIFF) &&
2757 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2758 (view == VIEW(REQ_VIEW_DIFF) &&
2759 view->parent == VIEW(REQ_VIEW_BLAME)) ||
2760 (view == VIEW(REQ_VIEW_STAGE) &&
2761 view->parent == VIEW(REQ_VIEW_STATUS)) ||
2762 (view == VIEW(REQ_VIEW_BLOB) &&
2763 view->parent == VIEW(REQ_VIEW_TREE))) {
2764 int line;
2765
2766 view = view->parent;
2767 line = view->lineno;
2768 move_view(view, request);
2769 if (view_is_displayed(view))
2770 update_view_title(view);
2771 if (line != view->lineno)
2772 view->ops->request(view, REQ_ENTER,
2773 &view->line[view->lineno]);
2774
2775 } else {
2776 move_view(view, request);
2777 }
2778 break;
2779
2780 case REQ_VIEW_NEXT:
2781 {
2782 int nviews = displayed_views();
2783 int next_view = (current_view + 1) % nviews;
2784
2785 if (next_view == current_view) {
2786 report("Only one view is displayed");
2787 break;
2788 }
2789
2790 current_view = next_view;
2791 /* Blur out the title of the previous view. */
2792 update_view_title(view);
2793 report("");
2794 break;
2795 }
2796 case REQ_REFRESH:
2797 report("Refreshing is not yet supported for the %s view", view->name);
2798 break;
2799
2800 case REQ_MAXIMIZE:
2801 if (displayed_views() == 2)
2802 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
2803 break;
2804
2805 case REQ_TOGGLE_LINENO:
2806 opt_line_number = !opt_line_number;
2807 redraw_display();
2808 break;
2809
2810 case REQ_TOGGLE_DATE:
2811 opt_date = !opt_date;
2812 redraw_display();
2813 break;
2814
2815 case REQ_TOGGLE_AUTHOR:
2816 opt_author = !opt_author;
2817 redraw_display();
2818 break;
2819
2820 case REQ_TOGGLE_REV_GRAPH:
2821 opt_rev_graph = !opt_rev_graph;
2822 redraw_display();
2823 break;
2824
2825 case REQ_TOGGLE_REFS:
2826 opt_show_refs = !opt_show_refs;
2827 redraw_display();
2828 break;
2829
2830 case REQ_SEARCH:
2831 case REQ_SEARCH_BACK:
2832 search_view(view, request);
2833 break;
2834
2835 case REQ_FIND_NEXT:
2836 case REQ_FIND_PREV:
2837 find_next(view, request);
2838 break;
2839
2840 case REQ_STOP_LOADING:
2841 for (i = 0; i < ARRAY_SIZE(views); i++) {
2842 view = &views[i];
2843 if (view->pipe)
2844 report("Stopped loading the %s view", view->name),
2845 end_update(view, TRUE);
2846 }
2847 break;
2848
2849 case REQ_SHOW_VERSION:
2850 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
2851 return TRUE;
2852
2853 case REQ_SCREEN_RESIZE:
2854 resize_display();
2855 /* Fall-through */
2856 case REQ_SCREEN_REDRAW:
2857 redraw_display();
2858 break;
2859
2860 case REQ_EDIT:
2861 report("Nothing to edit");
2862 break;
2863
2864 case REQ_ENTER:
2865 report("Nothing to enter");
2866 break;
2867
2868 case REQ_VIEW_CLOSE:
2869 /* XXX: Mark closed views by letting view->parent point to the
2870 * view itself. Parents to closed view should never be
2871 * followed. */
2872 if (view->parent &&
2873 view->parent->parent != view->parent) {
2874 memset(display, 0, sizeof(display));
2875 current_view = 0;
2876 display[current_view] = view->parent;
2877 view->parent = view;
2878 resize_display();
2879 redraw_display();
2880 break;
2881 }
2882 /* Fall-through */
2883 case REQ_QUIT:
2884 return FALSE;
2885
2886 default:
2887 /* An unknown key will show most commonly used commands. */
2888 report("Unknown key, press 'h' for help");
2889 return TRUE;
2890 }
2891
2892 return TRUE;
2893 }
2894
2895
2896 /*
2897 * Pager backend
2898 */
2899
2900 static bool
2901 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2902 {
2903 char *text = line->data;
2904
2905 if (opt_line_number && draw_lineno(view, lineno))
2906 return TRUE;
2907
2908 draw_text(view, line->type, text, TRUE);
2909 return TRUE;
2910 }
2911
2912 static bool
2913 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2914 {
2915 char refbuf[SIZEOF_STR];
2916 char *ref = NULL;
2917 FILE *pipe;
2918
2919 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2920 return TRUE;
2921
2922 pipe = popen(refbuf, "r");
2923 if (!pipe)
2924 return TRUE;
2925
2926 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2927 ref = chomp_string(ref);
2928 pclose(pipe);
2929
2930 if (!ref || !*ref)
2931 return TRUE;
2932
2933 /* This is the only fatal call, since it can "corrupt" the buffer. */
2934 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2935 return FALSE;
2936
2937 return TRUE;
2938 }
2939
2940 static void
2941 add_pager_refs(struct view *view, struct line *line)
2942 {
2943 char buf[SIZEOF_STR];
2944 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
2945 struct ref **refs;
2946 size_t bufpos = 0, refpos = 0;
2947 const char *sep = "Refs: ";
2948 bool is_tag = FALSE;
2949
2950 assert(line->type == LINE_COMMIT);
2951
2952 refs = get_refs(commit_id);
2953 if (!refs) {
2954 if (view == VIEW(REQ_VIEW_DIFF))
2955 goto try_add_describe_ref;
2956 return;
2957 }
2958
2959 do {
2960 struct ref *ref = refs[refpos];
2961 char *fmt = ref->tag ? "%s[%s]" :
2962 ref->remote ? "%s<%s>" : "%s%s";
2963
2964 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2965 return;
2966 sep = ", ";
2967 if (ref->tag)
2968 is_tag = TRUE;
2969 } while (refs[refpos++]->next);
2970
2971 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2972 try_add_describe_ref:
2973 /* Add <tag>-g<commit_id> "fake" reference. */
2974 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2975 return;
2976 }
2977
2978 if (bufpos == 0)
2979 return;
2980
2981 if (!realloc_lines(view, view->line_size + 1))
2982 return;
2983
2984 add_line_text(view, buf, LINE_PP_REFS);
2985 }
2986
2987 static bool
2988 pager_read(struct view *view, char *data)
2989 {
2990 struct line *line;
2991
2992 if (!data)
2993 return TRUE;
2994
2995 line = add_line_text(view, data, get_line_type(data));
2996 if (!line)
2997 return FALSE;
2998
2999 if (line->type == LINE_COMMIT &&
3000 (view == VIEW(REQ_VIEW_DIFF) ||
3001 view == VIEW(REQ_VIEW_LOG)))
3002 add_pager_refs(view, line);
3003
3004 return TRUE;
3005 }
3006
3007 static enum request
3008 pager_request(struct view *view, enum request request, struct line *line)
3009 {
3010 int split = 0;
3011
3012 if (request != REQ_ENTER)
3013 return request;
3014
3015 if (line->type == LINE_COMMIT &&
3016 (view == VIEW(REQ_VIEW_LOG) ||
3017 view == VIEW(REQ_VIEW_PAGER))) {
3018 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3019 split = 1;
3020 }
3021
3022 /* Always scroll the view even if it was split. That way
3023 * you can use Enter to scroll through the log view and
3024 * split open each commit diff. */
3025 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3026
3027 /* FIXME: A minor workaround. Scrolling the view will call report("")
3028 * but if we are scrolling a non-current view this won't properly
3029 * update the view title. */
3030 if (split)
3031 update_view_title(view);
3032
3033 return REQ_NONE;
3034 }
3035
3036 static bool
3037 pager_grep(struct view *view, struct line *line)
3038 {
3039 regmatch_t pmatch;
3040 char *text = line->data;
3041
3042 if (!*text)
3043 return FALSE;
3044
3045 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3046 return FALSE;
3047
3048 return TRUE;
3049 }
3050
3051 static void
3052 pager_select(struct view *view, struct line *line)
3053 {
3054 if (line->type == LINE_COMMIT) {
3055 char *text = (char *)line->data + STRING_SIZE("commit ");
3056
3057 if (view != VIEW(REQ_VIEW_PAGER))
3058 string_copy_rev(view->ref, text);
3059 string_copy_rev(ref_commit, text);
3060 }
3061 }
3062
3063 static struct view_ops pager_ops = {
3064 "line",
3065 NULL,
3066 pager_read,
3067 pager_draw,
3068 pager_request,
3069 pager_grep,
3070 pager_select,
3071 };
3072
3073 static enum request
3074 log_request(struct view *view, enum request request, struct line *line)
3075 {
3076 switch (request) {
3077 case REQ_REFRESH:
3078 load_refs();
3079 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3080 return REQ_NONE;
3081 default:
3082 return pager_request(view, request, line);
3083 }
3084 }
3085
3086 static struct view_ops log_ops = {
3087 "line",
3088 NULL,
3089 pager_read,
3090 pager_draw,
3091 log_request,
3092 pager_grep,
3093 pager_select,
3094 };
3095
3096
3097 /*
3098 * Help backend
3099 */
3100
3101 static bool
3102 help_open(struct view *view)
3103 {
3104 char buf[BUFSIZ];
3105 int lines = ARRAY_SIZE(req_info) + 2;
3106 int i;
3107
3108 if (view->lines > 0)
3109 return TRUE;
3110
3111 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3112 if (!req_info[i].request)
3113 lines++;
3114
3115 lines += run_requests + 1;
3116
3117 view->line = calloc(lines, sizeof(*view->line));
3118 if (!view->line)
3119 return FALSE;
3120
3121 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3122
3123 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3124 char *key;
3125
3126 if (req_info[i].request == REQ_NONE)
3127 continue;
3128
3129 if (!req_info[i].request) {
3130 add_line_text(view, "", LINE_DEFAULT);
3131 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3132 continue;
3133 }
3134
3135 key = get_key(req_info[i].request);
3136 if (!*key)
3137 key = "(no key defined)";
3138
3139 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
3140 continue;
3141
3142 add_line_text(view, buf, LINE_DEFAULT);
3143 }
3144
3145 if (run_requests) {
3146 add_line_text(view, "", LINE_DEFAULT);
3147 add_line_text(view, "External commands:", LINE_DEFAULT);
3148 }
3149
3150 for (i = 0; i < run_requests; i++) {
3151 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3152 char *key;
3153
3154 if (!req)
3155 continue;
3156
3157 key = get_key_name(req->key);
3158 if (!*key)
3159 key = "(no key defined)";
3160
3161 if (!string_format(buf, " %-10s %-14s `%s`",
3162 keymap_table[req->keymap].name,
3163 key, req->cmd))
3164 continue;
3165
3166 add_line_text(view, buf, LINE_DEFAULT);
3167 }
3168
3169 return TRUE;
3170 }
3171
3172 static struct view_ops help_ops = {
3173 "line",
3174 help_open,
3175 NULL,
3176 pager_draw,
3177 pager_request,
3178 pager_grep,
3179 pager_select,
3180 };
3181
3182
3183 /*
3184 * Tree backend
3185 */
3186
3187 struct tree_stack_entry {
3188 struct tree_stack_entry *prev; /* Entry below this in the stack */
3189 unsigned long lineno; /* Line number to restore */
3190 char *name; /* Position of name in opt_path */
3191 };
3192
3193 /* The top of the path stack. */
3194 static struct tree_stack_entry *tree_stack = NULL;
3195 unsigned long tree_lineno = 0;
3196
3197 static void
3198 pop_tree_stack_entry(void)
3199 {
3200 struct tree_stack_entry *entry = tree_stack;
3201
3202 tree_lineno = entry->lineno;
3203 entry->name[0] = 0;
3204 tree_stack = entry->prev;
3205 free(entry);
3206 }
3207
3208 static void
3209 push_tree_stack_entry(char *name, unsigned long lineno)
3210 {
3211 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3212 size_t pathlen = strlen(opt_path);
3213
3214 if (!entry)
3215 return;
3216
3217 entry->prev = tree_stack;
3218 entry->name = opt_path + pathlen;
3219 tree_stack = entry;
3220
3221 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3222 pop_tree_stack_entry();
3223 return;
3224 }
3225
3226 /* Move the current line to the first tree entry. */
3227 tree_lineno = 1;
3228 entry->lineno = lineno;
3229 }
3230
3231 /* Parse output from git-ls-tree(1):
3232 *
3233 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3234 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3235 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3236 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3237 */
3238
3239 #define SIZEOF_TREE_ATTR \
3240 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3241
3242 #define TREE_UP_FORMAT "040000 tree %s\t.."
3243
3244 static int
3245 tree_compare_entry(enum line_type type1, char *name1,
3246 enum line_type type2, char *name2)
3247 {
3248 if (type1 != type2) {
3249 if (type1 == LINE_TREE_DIR)
3250 return -1;
3251 return 1;
3252 }
3253
3254 return strcmp(name1, name2);
3255 }
3256
3257 static char *
3258 tree_path(struct line *line)
3259 {
3260 char *path = line->data;
3261
3262 return path + SIZEOF_TREE_ATTR;
3263 }
3264
3265 static bool
3266 tree_read(struct view *view, char *text)
3267 {
3268 size_t textlen = text ? strlen(text) : 0;
3269 char buf[SIZEOF_STR];
3270 unsigned long pos;
3271 enum line_type type;
3272 bool first_read = view->lines == 0;
3273
3274 if (!text)
3275 return TRUE;
3276 if (textlen <= SIZEOF_TREE_ATTR)
3277 return FALSE;
3278
3279 type = text[STRING_SIZE("100644 ")] == 't'
3280 ? LINE_TREE_DIR : LINE_TREE_FILE;
3281
3282 if (first_read) {
3283 /* Add path info line */
3284 if (!string_format(buf, "Directory path /%s", opt_path) ||
3285 !realloc_lines(view, view->line_size + 1) ||
3286 !add_line_text(view, buf, LINE_DEFAULT))
3287 return FALSE;
3288
3289 /* Insert "link" to parent directory. */
3290 if (*opt_path) {
3291 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
3292 !realloc_lines(view, view->line_size + 1) ||
3293 !add_line_text(view, buf, LINE_TREE_DIR))
3294 return FALSE;
3295 }
3296 }
3297
3298 /* Strip the path part ... */
3299 if (*opt_path) {
3300 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3301 size_t striplen = strlen(opt_path);
3302 char *path = text + SIZEOF_TREE_ATTR;
3303
3304 if (pathlen > striplen)
3305 memmove(path, path + striplen,
3306 pathlen - striplen + 1);
3307 }
3308
3309 /* Skip "Directory ..." and ".." line. */
3310 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
3311 struct line *line = &view->line[pos];
3312 char *path1 = tree_path(line);
3313 char *path2 = text + SIZEOF_TREE_ATTR;
3314 int cmp = tree_compare_entry(line->type, path1, type, path2);
3315
3316 if (cmp <= 0)
3317 continue;
3318
3319 text = strdup(text);
3320 if (!text)
3321 return FALSE;
3322
3323 if (view->lines > pos)
3324 memmove(&view->line[pos + 1], &view->line[pos],
3325 (view->lines - pos) * sizeof(*line));
3326
3327 line = &view->line[pos];
3328 line->data = text;
3329 line->type = type;
3330 view->lines++;
3331 return TRUE;
3332 }
3333
3334 if (!add_line_text(view, text, type))
3335 return FALSE;
3336
3337 if (tree_lineno > view->lineno) {
3338 view->lineno = tree_lineno;
3339 tree_lineno = 0;
3340 }
3341
3342 return TRUE;
3343 }
3344
3345 static enum request
3346 tree_request(struct view *view, enum request request, struct line *line)
3347 {
3348 enum open_flags flags;
3349
3350 if (request == REQ_VIEW_BLAME) {
3351 char *filename = tree_path(line);
3352
3353 if (line->type == LINE_TREE_DIR) {
3354 report("Cannot show blame for directory %s", opt_path);
3355 return REQ_NONE;
3356 }
3357
3358 string_copy(opt_ref, view->vid);
3359 string_format(opt_file, "%s%s", opt_path, filename);
3360 return request;
3361 }
3362 if (request == REQ_TREE_PARENT) {
3363 if (*opt_path) {
3364 /* fake 'cd ..' */
3365 request = REQ_ENTER;
3366 line = &view->line[1];
3367 } else {
3368 /* quit view if at top of tree */
3369 return REQ_VIEW_CLOSE;
3370 }
3371 }
3372 if (request != REQ_ENTER)
3373 return request;
3374
3375 /* Cleanup the stack if the tree view is at a different tree. */
3376 while (!*opt_path && tree_stack)
3377 pop_tree_stack_entry();
3378
3379 switch (line->type) {
3380 case LINE_TREE_DIR:
3381 /* Depending on whether it is a subdir or parent (updir?) link
3382 * mangle the path buffer. */
3383 if (line == &view->line[1] && *opt_path) {
3384 pop_tree_stack_entry();
3385
3386 } else {
3387 char *basename = tree_path(line);
3388
3389 push_tree_stack_entry(basename, view->lineno);
3390 }
3391
3392 /* Trees and subtrees share the same ID, so they are not not
3393 * unique like blobs. */
3394 flags = OPEN_RELOAD;
3395 request = REQ_VIEW_TREE;
3396 break;
3397
3398 case LINE_TREE_FILE:
3399 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3400 request = REQ_VIEW_BLOB;
3401 break;
3402
3403 default:
3404 return TRUE;
3405 }
3406
3407 open_view(view, request, flags);
3408 if (request == REQ_VIEW_TREE) {
3409 view->lineno = tree_lineno;
3410 }
3411
3412 return REQ_NONE;
3413 }
3414
3415 static void
3416 tree_select(struct view *view, struct line *line)
3417 {
3418 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3419
3420 if (line->type == LINE_TREE_FILE) {
3421 string_copy_rev(ref_blob, text);
3422
3423 } else if (line->type != LINE_TREE_DIR) {
3424 return;
3425 }
3426
3427 string_copy_rev(view->ref, text);
3428 }
3429
3430 static struct view_ops tree_ops = {
3431 "file",
3432 NULL,
3433 tree_read,
3434 pager_draw,
3435 tree_request,
3436 pager_grep,
3437 tree_select,
3438 };
3439
3440 static bool
3441 blob_read(struct view *view, char *line)
3442 {
3443 if (!line)
3444 return TRUE;
3445 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3446 }
3447
3448 static struct view_ops blob_ops = {
3449 "line",
3450 NULL,
3451 blob_read,
3452 pager_draw,
3453 pager_request,
3454 pager_grep,
3455 pager_select,
3456 };
3457
3458 /*
3459 * Blame backend
3460 *
3461 * Loading the blame view is a two phase job:
3462 *
3463 * 1. File content is read either using opt_file from the
3464 * filesystem or using git-cat-file.
3465 * 2. Then blame information is incrementally added by
3466 * reading output from git-blame.
3467 */
3468
3469 struct blame_commit {
3470 char id[SIZEOF_REV]; /* SHA1 ID. */
3471 char title[128]; /* First line of the commit message. */
3472 char author[75]; /* Author of the commit. */
3473 struct tm time; /* Date from the author ident. */
3474 char filename[128]; /* Name of file. */
3475 };
3476
3477 struct blame {
3478 struct blame_commit *commit;
3479 unsigned int header:1;
3480 char text[1];
3481 };
3482
3483 #define BLAME_CAT_FILE_CMD "git cat-file blob %s:%s"
3484 #define BLAME_INCREMENTAL_CMD "git blame --incremental %s %s"
3485
3486 static bool
3487 blame_open(struct view *view)
3488 {
3489 char path[SIZEOF_STR];
3490 char ref[SIZEOF_STR] = "";
3491
3492 if (sq_quote(path, 0, opt_file) >= sizeof(path))
3493 return FALSE;
3494
3495 if (*opt_ref && sq_quote(ref, 0, opt_ref) >= sizeof(ref))
3496 return FALSE;
3497
3498 if (*opt_ref) {
3499 if (!string_format(view->cmd, BLAME_CAT_FILE_CMD, ref, path))
3500 return FALSE;
3501 } else {
3502 view->pipe = fopen(opt_file, "r");
3503 if (!view->pipe &&
3504 !string_format(view->cmd, BLAME_CAT_FILE_CMD, "HEAD", path))
3505 return FALSE;
3506 }
3507
3508 if (!view->pipe)
3509 view->pipe = popen(view->cmd, "r");
3510 if (!view->pipe)
3511 return FALSE;
3512
3513 if (!string_format(view->cmd, BLAME_INCREMENTAL_CMD, ref, path))
3514 return FALSE;
3515
3516 string_format(view->ref, "%s ...", opt_file);
3517 string_copy_rev(view->vid, opt_file);
3518 set_nonblocking_input(TRUE);
3519
3520 if (view->line) {
3521 int i;
3522
3523 for (i = 0; i < view->lines; i++)
3524 free(view->line[i].data);
3525 free(view->line);
3526 }
3527
3528 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
3529 view->offset = view->lines = view->lineno = 0;
3530 view->line = NULL;
3531 view->start_time = time(NULL);
3532
3533 return TRUE;
3534 }
3535
3536 static struct blame_commit *
3537 get_blame_commit(struct view *view, const char *id)
3538 {
3539 size_t i;
3540
3541 for (i = 0; i < view->lines; i++) {
3542 struct blame *blame = view->line[i].data;
3543
3544 if (!blame->commit)
3545 continue;
3546
3547 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3548 return blame->commit;
3549 }
3550
3551 {
3552 struct blame_commit *commit = calloc(1, sizeof(*commit));
3553
3554 if (commit)
3555 string_ncopy(commit->id, id, SIZEOF_REV);
3556 return commit;
3557 }
3558 }
3559
3560 static bool
3561 parse_number(char **posref, size_t *number, size_t min, size_t max)
3562 {
3563 char *pos = *posref;
3564
3565 *posref = NULL;
3566 pos = strchr(pos + 1, ' ');
3567 if (!pos || !isdigit(pos[1]))
3568 return FALSE;
3569 *number = atoi(pos + 1);
3570 if (*number < min || *number > max)
3571 return FALSE;
3572
3573 *posref = pos;
3574 return TRUE;
3575 }
3576
3577 static struct blame_commit *
3578 parse_blame_commit(struct view *view, char *text, int *blamed)
3579 {
3580 struct blame_commit *commit;
3581 struct blame *blame;
3582 char *pos = text + SIZEOF_REV - 1;
3583 size_t lineno;
3584 size_t group;
3585
3586 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3587 return NULL;
3588
3589 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3590 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3591 return NULL;
3592
3593 commit = get_blame_commit(view, text);
3594 if (!commit)
3595 return NULL;
3596
3597 *blamed += group;
3598 while (group--) {
3599 struct line *line = &view->line[lineno + group - 1];
3600
3601 blame = line->data;
3602 blame->commit = commit;
3603 blame->header = !group;
3604 line->dirty = 1;
3605 }
3606
3607 return commit;
3608 }
3609
3610 static bool
3611 blame_read_file(struct view *view, char *line)
3612 {
3613 if (!line) {
3614 FILE *pipe = NULL;
3615
3616 if (view->lines > 0)
3617 pipe = popen(view->cmd, "r");
3618 else if (!view->parent)
3619 die("No blame exist for %s", view->vid);
3620 view->cmd[0] = 0;
3621 if (!pipe) {
3622 report("Failed to load blame data");
3623 return TRUE;
3624 }
3625
3626 fclose(view->pipe);
3627 view->pipe = pipe;
3628 return FALSE;
3629
3630 } else {
3631 size_t linelen = strlen(line);
3632 struct blame *blame = malloc(sizeof(*blame) + linelen);
3633
3634 blame->commit = NULL;
3635 strncpy(blame->text, line, linelen);
3636 blame->text[linelen] = 0;
3637 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
3638 }
3639 }
3640
3641 static bool
3642 match_blame_header(const char *name, char **line)
3643 {
3644 size_t namelen = strlen(name);
3645 bool matched = !strncmp(name, *line, namelen);
3646
3647 if (matched)
3648 *line += namelen;
3649
3650 return matched;
3651 }
3652
3653 static bool
3654 blame_read(struct view *view, char *line)
3655 {
3656 static struct blame_commit *commit = NULL;
3657 static int blamed = 0;
3658 static time_t author_time;
3659
3660 if (*view->cmd)
3661 return blame_read_file(view, line);
3662
3663 if (!line) {
3664 /* Reset all! */
3665 commit = NULL;
3666 blamed = 0;
3667 string_format(view->ref, "%s", view->vid);
3668 if (view_is_displayed(view)) {
3669 update_view_title(view);
3670 redraw_view_from(view, 0);
3671 }
3672 return TRUE;
3673 }
3674
3675 if (!commit) {
3676 commit = parse_blame_commit(view, line, &blamed);
3677 string_format(view->ref, "%s %2d%%", view->vid,
3678 blamed * 100 / view->lines);
3679
3680 } else if (match_blame_header("author ", &line)) {
3681 string_ncopy(commit->author, line, strlen(line));
3682
3683 } else if (match_blame_header("author-time ", &line)) {
3684 author_time = (time_t) atol(line);
3685
3686 } else if (match_blame_header("author-tz ", &line)) {
3687 long tz;
3688
3689 tz = ('0' - line[1]) * 60 * 60 * 10;
3690 tz += ('0' - line[2]) * 60 * 60;
3691 tz += ('0' - line[3]) * 60;
3692 tz += ('0' - line[4]) * 60;
3693
3694 if (line[0] == '-')
3695 tz = -tz;
3696
3697 author_time -= tz;
3698 gmtime_r(&author_time, &commit->time);
3699
3700 } else if (match_blame_header("summary ", &line)) {
3701 string_ncopy(commit->title, line, strlen(line));
3702
3703 } else if (match_blame_header("filename ", &line)) {
3704 string_ncopy(commit->filename, line, strlen(line));
3705 commit = NULL;
3706 }
3707
3708 return TRUE;
3709 }
3710
3711 static bool
3712 blame_draw(struct view *view, struct line *line, unsigned int lineno)
3713 {
3714 struct blame *blame = line->data;
3715 struct tm *time = NULL;
3716 char *id = NULL, *author = NULL;
3717
3718 if (blame->commit && *blame->commit->filename) {
3719 id = blame->commit->id;
3720 author = blame->commit->author;
3721 time = &blame->commit->time;
3722 }
3723
3724 if (opt_date && draw_date(view, time))
3725 return TRUE;
3726
3727 if (opt_author &&
3728 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
3729 return TRUE;
3730
3731 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
3732 return TRUE;
3733
3734 if (draw_lineno(view, lineno))
3735 return TRUE;
3736
3737 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
3738 return TRUE;
3739 }
3740
3741 static enum request
3742 blame_request(struct view *view, enum request request, struct line *line)
3743 {
3744 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3745 struct blame *blame = line->data;
3746
3747 switch (request) {
3748 case REQ_ENTER:
3749 if (!blame->commit) {
3750 report("No commit loaded yet");
3751 break;
3752 }
3753
3754 if (!strcmp(blame->commit->id, NULL_ID)) {
3755 char path[SIZEOF_STR];
3756
3757 if (sq_quote(path, 0, view->vid) >= sizeof(path))
3758 break;
3759 string_format(opt_cmd, "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s 2>/dev/null", path);
3760 }
3761
3762 open_view(view, REQ_VIEW_DIFF, flags);
3763 break;
3764
3765 default:
3766 return request;
3767 }
3768
3769 return REQ_NONE;
3770 }
3771
3772 static bool
3773 blame_grep(struct view *view, struct line *line)
3774 {
3775 struct blame *blame = line->data;
3776 struct blame_commit *commit = blame->commit;
3777 regmatch_t pmatch;
3778
3779 #define MATCH(text, on) \
3780 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3781
3782 if (commit) {
3783 char buf[DATE_COLS + 1];
3784
3785 if (MATCH(commit->title, 1) ||
3786 MATCH(commit->author, opt_author) ||
3787 MATCH(commit->id, opt_date))
3788 return TRUE;
3789
3790 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
3791 MATCH(buf, 1))
3792 return TRUE;
3793 }
3794
3795 return MATCH(blame->text, 1);
3796
3797 #undef MATCH
3798 }
3799
3800 static void
3801 blame_select(struct view *view, struct line *line)
3802 {
3803 struct blame *blame = line->data;
3804 struct blame_commit *commit = blame->commit;
3805
3806 if (!commit)
3807 return;
3808
3809 if (!strcmp(commit->id, NULL_ID))
3810 string_ncopy(ref_commit, "HEAD", 4);
3811 else
3812 string_copy_rev(ref_commit, commit->id);
3813 }
3814
3815 static struct view_ops blame_ops = {
3816 "line",
3817 blame_open,
3818 blame_read,
3819 blame_draw,
3820 blame_request,
3821 blame_grep,
3822 blame_select,
3823 };
3824
3825 /*
3826 * Status backend
3827 */
3828
3829 struct status {
3830 char status;
3831 struct {
3832 mode_t mode;
3833 char rev[SIZEOF_REV];
3834 char name[SIZEOF_STR];
3835 } old;
3836 struct {
3837 mode_t mode;
3838 char rev[SIZEOF_REV];
3839 char name[SIZEOF_STR];
3840 } new;
3841 };
3842
3843 static char status_onbranch[SIZEOF_STR];
3844 static struct status stage_status;
3845 static enum line_type stage_line_type;
3846 static size_t stage_chunks;
3847 static int *stage_chunk;
3848
3849 /* This should work even for the "On branch" line. */
3850 static inline bool
3851 status_has_none(struct view *view, struct line *line)
3852 {
3853 return line < view->line + view->lines && !line[1].data;
3854 }
3855
3856 /* Get fields from the diff line:
3857 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
3858 */
3859 static inline bool
3860 status_get_diff(struct status *file, char *buf, size_t bufsize)
3861 {
3862 char *old_mode = buf + 1;
3863 char *new_mode = buf + 8;
3864 char *old_rev = buf + 15;
3865 char *new_rev = buf + 56;
3866 char *status = buf + 97;
3867
3868 if (bufsize < 99 ||
3869 old_mode[-1] != ':' ||
3870 new_mode[-1] != ' ' ||
3871 old_rev[-1] != ' ' ||
3872 new_rev[-1] != ' ' ||
3873 status[-1] != ' ')
3874 return FALSE;
3875
3876 file->status = *status;
3877
3878 string_copy_rev(file->old.rev, old_rev);
3879 string_copy_rev(file->new.rev, new_rev);
3880
3881 file->old.mode = strtoul(old_mode, NULL, 8);
3882 file->new.mode = strtoul(new_mode, NULL, 8);
3883
3884 file->old.name[0] = file->new.name[0] = 0;
3885
3886 return TRUE;
3887 }
3888
3889 static bool
3890 status_run(struct view *view, const char cmd[], char status, enum line_type type)
3891 {
3892 struct status *file = NULL;
3893 struct status *unmerged = NULL;
3894 char buf[SIZEOF_STR * 4];
3895 size_t bufsize = 0;
3896 FILE *pipe;
3897
3898 pipe = popen(cmd, "r");
3899 if (!pipe)
3900 return FALSE;
3901
3902 add_line_data(view, NULL, type);
3903
3904 while (!feof(pipe) && !ferror(pipe)) {
3905 char *sep;
3906 size_t readsize;
3907
3908 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
3909 if (!readsize)
3910 break;
3911 bufsize += readsize;
3912
3913 /* Process while we have NUL chars. */
3914 while ((sep = memchr(buf, 0, bufsize))) {
3915 size_t sepsize = sep - buf + 1;
3916
3917 if (!file) {
3918 if (!realloc_lines(view, view->line_size + 1))
3919 goto error_out;
3920
3921 file = calloc(1, sizeof(*file));
3922 if (!file)
3923 goto error_out;
3924
3925 add_line_data(view, file, type);
3926 }
3927
3928 /* Parse diff info part. */
3929 if (status) {
3930 file->status = status;
3931 if (status == 'A')
3932 string_copy(file->old.rev, NULL_ID);
3933
3934 } else if (!file->status) {
3935 if (!status_get_diff(file, buf, sepsize))
3936 goto error_out;
3937
3938 bufsize -= sepsize;
3939 memmove(buf, sep + 1, bufsize);
3940
3941 sep = memchr(buf, 0, bufsize);
3942 if (!sep)
3943 break;
3944 sepsize = sep - buf + 1;
3945
3946 /* Collapse all 'M'odified entries that
3947 * follow a associated 'U'nmerged entry.
3948 */
3949 if (file->status == 'U') {
3950 unmerged = file;
3951
3952 } else if (unmerged) {
3953 int collapse = !strcmp(buf, unmerged->new.name);
3954
3955 unmerged = NULL;
3956 if (collapse) {
3957 free(file);
3958 view->lines--;
3959 continue;
3960 }
3961 }
3962 }
3963
3964 /* Grab the old name for rename/copy. */
3965 if (!*file->old.name &&
3966 (file->status == 'R' || file->status == 'C')) {
3967 sepsize = sep - buf + 1;
3968 string_ncopy(file->old.name, buf, sepsize);
3969 bufsize -= sepsize;
3970 memmove(buf, sep + 1, bufsize);
3971
3972 sep = memchr(buf, 0, bufsize);
3973 if (!sep)
3974 break;
3975 sepsize = sep - buf + 1;
3976 }
3977
3978 /* git-ls-files just delivers a NUL separated
3979 * list of file names similar to the second half
3980 * of the git-diff-* output. */
3981 string_ncopy(file->new.name, buf, sepsize);
3982 if (!*file->old.name)
3983 string_copy(file->old.name, file->new.name);
3984 bufsize -= sepsize;
3985 memmove(buf, sep + 1, bufsize);
3986 file = NULL;
3987 }
3988 }
3989
3990 if (ferror(pipe)) {
3991 error_out:
3992 pclose(pipe);
3993 return FALSE;
3994 }
3995
3996 if (!view->line[view->lines - 1].data)
3997 add_line_data(view, NULL, LINE_STAT_NONE);
3998
3999 pclose(pipe);
4000 return TRUE;
4001 }
4002
4003 /* Don't show unmerged entries in the staged section. */
4004 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached -M HEAD"
4005 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
4006 #define STATUS_LIST_OTHER_CMD \
4007 "git ls-files -z --others --exclude-standard"
4008 #define STATUS_LIST_NO_HEAD_CMD \
4009 "git ls-files -z --cached --exclude-standard"
4010
4011 #define STATUS_DIFF_INDEX_SHOW_CMD \
4012 "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null"
4013
4014 #define STATUS_DIFF_FILES_SHOW_CMD \
4015 "git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null"
4016
4017 #define STATUS_DIFF_NO_HEAD_SHOW_CMD \
4018 "git diff --no-color --patch-with-stat /dev/null %s 2>/dev/null"
4019
4020 /* First parse staged info using git-diff-index(1), then parse unstaged
4021 * info using git-diff-files(1), and finally untracked files using
4022 * git-ls-files(1). */
4023 static bool
4024 status_open(struct view *view)
4025 {
4026 unsigned long prev_lineno = view->lineno;
4027 size_t i;
4028
4029 for (i = 0; i < view->lines; i++)
4030 free(view->line[i].data);
4031 free(view->line);
4032 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
4033 view->line = NULL;
4034
4035 if (!realloc_lines(view, view->line_size + 7))
4036 return FALSE;
4037
4038 add_line_data(view, NULL, LINE_STAT_HEAD);
4039 if (opt_no_head)
4040 string_copy(status_onbranch, "Initial commit");
4041 else if (!*opt_head)
4042 string_copy(status_onbranch, "Not currently on any branch");
4043 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4044 return FALSE;
4045
4046 system("git update-index -q --refresh >/dev/null 2>/dev/null");
4047
4048 if (opt_no_head) {
4049 if (!status_run(view, STATUS_LIST_NO_HEAD_CMD, 'A', LINE_STAT_STAGED))
4050 return FALSE;
4051 } else if (!status_run(view, STATUS_DIFF_INDEX_CMD, 0, LINE_STAT_STAGED)) {
4052 return FALSE;
4053 }
4054
4055 if (!status_run(view, STATUS_DIFF_FILES_CMD, 0, LINE_STAT_UNSTAGED) ||
4056 !status_run(view, STATUS_LIST_OTHER_CMD, '?', LINE_STAT_UNTRACKED))
4057 return FALSE;
4058
4059 /* If all went well restore the previous line number to stay in
4060 * the context or select a line with something that can be
4061 * updated. */
4062 if (prev_lineno >= view->lines)
4063 prev_lineno = view->lines - 1;
4064 while (prev_lineno < view->lines && !view->line[prev_lineno].data)
4065 prev_lineno++;
4066 while (prev_lineno > 0 && !view->line[prev_lineno].data)
4067 prev_lineno--;
4068
4069 /* If the above fails, always skip the "On branch" line. */
4070 if (prev_lineno < view->lines)
4071 view->lineno = prev_lineno;
4072 else
4073 view->lineno = 1;
4074
4075 if (view->lineno < view->offset)
4076 view->offset = view->lineno;
4077 else if (view->offset + view->height <= view->lineno)
4078 view->offset = view->lineno - view->height + 1;
4079
4080 return TRUE;
4081 }
4082
4083 static bool
4084 status_draw(struct view *view, struct line *line, unsigned int lineno)
4085 {
4086 struct status *status = line->data;
4087 enum line_type type;
4088 char *text;
4089
4090 if (!status) {
4091 switch (line->type) {
4092 case LINE_STAT_STAGED:
4093 type = LINE_STAT_SECTION;
4094 text = "Changes to be committed:";
4095 break;
4096
4097 case LINE_STAT_UNSTAGED:
4098 type = LINE_STAT_SECTION;
4099 text = "Changed but not updated:";
4100 break;
4101
4102 case LINE_STAT_UNTRACKED:
4103 type = LINE_STAT_SECTION;
4104 text = "Untracked files:";
4105 break;
4106
4107 case LINE_STAT_NONE:
4108 type = LINE_DEFAULT;
4109 text = " (no files)";
4110 break;
4111
4112 case LINE_STAT_HEAD:
4113 type = LINE_STAT_HEAD;
4114 text = status_onbranch;
4115 break;
4116
4117 default:
4118 return FALSE;
4119 }
4120 } else {
4121 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4122
4123 buf[0] = status->status;
4124 if (draw_text(view, line->type, buf, TRUE))
4125 return TRUE;
4126 type = LINE_DEFAULT;
4127 text = status->new.name;
4128 }
4129
4130 draw_text(view, type, text, TRUE);
4131 return TRUE;
4132 }
4133
4134 static enum request
4135 status_enter(struct view *view, struct line *line)
4136 {
4137 struct status *status = line->data;
4138 char oldpath[SIZEOF_STR] = "";
4139 char newpath[SIZEOF_STR] = "";
4140 char *info;
4141 size_t cmdsize = 0;
4142 enum open_flags split;
4143
4144 if (line->type == LINE_STAT_NONE ||
4145 (!status && line[1].type == LINE_STAT_NONE)) {
4146 report("No file to diff");
4147 return REQ_NONE;
4148 }
4149
4150 if (status) {
4151 if (sq_quote(oldpath, 0, status->old.name) >= sizeof(oldpath))
4152 return REQ_QUIT;
4153 /* Diffs for unmerged entries are empty when pasing the
4154 * new path, so leave it empty. */
4155 if (status->status != 'U' &&
4156 sq_quote(newpath, 0, status->new.name) >= sizeof(newpath))
4157 return REQ_QUIT;
4158 }
4159
4160 if (opt_cdup[0] &&
4161 line->type != LINE_STAT_UNTRACKED &&
4162 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
4163 return REQ_QUIT;
4164
4165 switch (line->type) {
4166 case LINE_STAT_STAGED:
4167 if (opt_no_head) {
4168 if (!string_format_from(opt_cmd, &cmdsize,
4169 STATUS_DIFF_NO_HEAD_SHOW_CMD,
4170 newpath))
4171 return REQ_QUIT;
4172 } else {
4173 if (!string_format_from(opt_cmd, &cmdsize,
4174 STATUS_DIFF_INDEX_SHOW_CMD,
4175 oldpath, newpath))
4176 return REQ_QUIT;
4177 }
4178
4179 if (status)
4180 info = "Staged changes to %s";
4181 else
4182 info = "Staged changes";
4183 break;
4184
4185 case LINE_STAT_UNSTAGED:
4186 if (!string_format_from(opt_cmd, &cmdsize,
4187 STATUS_DIFF_FILES_SHOW_CMD, oldpath, newpath))
4188 return REQ_QUIT;
4189 if (status)
4190 info = "Unstaged changes to %s";
4191 else
4192 info = "Unstaged changes";
4193 break;
4194
4195 case LINE_STAT_UNTRACKED:
4196 if (opt_pipe)
4197 return REQ_QUIT;
4198
4199 if (!status) {
4200 report("No file to show");
4201 return REQ_NONE;
4202 }
4203
4204 opt_pipe = fopen(status->new.name, "r");
4205 info = "Untracked file %s";
4206 break;
4207
4208 case LINE_STAT_HEAD:
4209 return REQ_NONE;
4210
4211 default:
4212 die("line type %d not handled in switch", line->type);
4213 }
4214
4215 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4216 open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | split);
4217 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4218 if (status) {
4219 stage_status = *status;
4220 } else {
4221 memset(&stage_status, 0, sizeof(stage_status));
4222 }
4223
4224 stage_line_type = line->type;
4225 stage_chunks = 0;
4226 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4227 }
4228
4229 return REQ_NONE;
4230 }
4231
4232 static bool
4233 status_exists(struct status *status, enum line_type type)
4234 {
4235 struct view *view = VIEW(REQ_VIEW_STATUS);
4236 struct line *line;
4237
4238 for (line = view->line; line < view->line + view->lines; line++) {
4239 struct status *pos = line->data;
4240
4241 if (line->type == type && pos &&
4242 !strcmp(status->new.name, pos->new.name))
4243 return TRUE;
4244 }
4245
4246 return FALSE;
4247 }
4248
4249
4250 static FILE *
4251 status_update_prepare(enum line_type type)
4252 {
4253 char cmd[SIZEOF_STR];
4254 size_t cmdsize = 0;
4255
4256 if (opt_cdup[0] &&
4257 type != LINE_STAT_UNTRACKED &&
4258 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4259 return NULL;
4260
4261 switch (type) {
4262 case LINE_STAT_STAGED:
4263 string_add(cmd, cmdsize, "git update-index -z --index-info");
4264 break;
4265
4266 case LINE_STAT_UNSTAGED:
4267 case LINE_STAT_UNTRACKED:
4268 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
4269 break;
4270
4271 default:
4272 die("line type %d not handled in switch", type);
4273 }
4274
4275 return popen(cmd, "w");
4276 }
4277
4278 static bool
4279 status_update_write(FILE *pipe, struct status *status, enum line_type type)
4280 {
4281 char buf[SIZEOF_STR];
4282 size_t bufsize = 0;
4283 size_t written = 0;
4284
4285 switch (type) {
4286 case LINE_STAT_STAGED:
4287 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4288 status->old.mode,
4289 status->old.rev,
4290 status->old.name, 0))
4291 return FALSE;
4292 break;
4293
4294 case LINE_STAT_UNSTAGED:
4295 case LINE_STAT_UNTRACKED:
4296 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4297 return FALSE;
4298 break;
4299
4300 default:
4301 die("line type %d not handled in switch", type);
4302 }
4303
4304 while (!ferror(pipe) && written < bufsize) {
4305 written += fwrite(buf + written, 1, bufsize - written, pipe);
4306 }
4307
4308 return written == bufsize;
4309 }
4310
4311 static bool
4312 status_update_file(struct status *status, enum line_type type)
4313 {
4314 FILE *pipe = status_update_prepare(type);
4315 bool result;
4316
4317 if (!pipe)
4318 return FALSE;
4319
4320 result = status_update_write(pipe, status, type);
4321 pclose(pipe);
4322 return result;
4323 }
4324
4325 static bool
4326 status_update_files(struct view *view, struct line *line)
4327 {
4328 FILE *pipe = status_update_prepare(line->type);
4329 bool result = TRUE;
4330 struct line *pos = view->line + view->lines;
4331 int files = 0;
4332 int file, done;
4333
4334 if (!pipe)
4335 return FALSE;
4336
4337 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4338 files++;
4339
4340 for (file = 0, done = 0; result && file < files; line++, file++) {
4341 int almost_done = file * 100 / files;
4342
4343 if (almost_done > done) {
4344 done = almost_done;
4345 string_format(view->ref, "updating file %u of %u (%d%% done)",
4346 file, files, done);
4347 update_view_title(view);
4348 }
4349 result = status_update_write(pipe, line->data, line->type);
4350 }
4351
4352 pclose(pipe);
4353 return result;
4354 }
4355
4356 static bool
4357 status_update(struct view *view)
4358 {
4359 struct line *line = &view->line[view->lineno];
4360
4361 assert(view->lines);
4362
4363 if (!line->data) {
4364 /* This should work even for the "On branch" line. */
4365 if (line < view->line + view->lines && !line[1].data) {
4366 report("Nothing to update");
4367 return FALSE;
4368 }
4369
4370 if (!status_update_files(view, line + 1)) {
4371 report("Failed to update file status");
4372 return FALSE;
4373 }
4374
4375 } else if (!status_update_file(line->data, line->type)) {
4376 report("Failed to update file status");
4377 return FALSE;
4378 }
4379
4380 return TRUE;
4381 }
4382
4383 static bool
4384 status_checkout(struct status *status, enum line_type type, bool has_none)
4385 {
4386 if (!status || type != LINE_STAT_UNSTAGED) {
4387 if (type == LINE_STAT_STAGED) {
4388 report("Cannot checkout staged files");
4389 } else if (type == LINE_STAT_UNTRACKED) {
4390 report("Cannot checkout untracked files");
4391 } else if (has_none) {
4392 report("Nothing to checkout");
4393 } else {
4394 report("Cannot checkout multiple files");
4395 }
4396 return FALSE;
4397
4398 } else {
4399 char cmd[SIZEOF_STR];
4400 char file_sq[SIZEOF_STR];
4401
4402 if (sq_quote(file_sq, 0, status->old.name) >= sizeof(file_sq) ||
4403 !string_format(cmd, "git checkout %s%s", opt_cdup, file_sq))
4404 return FALSE;
4405
4406 return run_confirm(cmd, "Are you sure you want to overwrite any changes?");
4407 }
4408 }
4409
4410 static enum request
4411 status_request(struct view *view, enum request request, struct line *line)
4412 {
4413 struct status *status = line->data;
4414
4415 switch (request) {
4416 case REQ_STATUS_UPDATE:
4417 if (!status_update(view))
4418 return REQ_NONE;
4419 break;
4420
4421 case REQ_STATUS_CHECKOUT:
4422 if (!status_checkout(status, line->type, status_has_none(view, line)))
4423 return REQ_NONE;
4424 break;
4425
4426 case REQ_STATUS_MERGE:
4427 if (!status || status->status != 'U') {
4428 report("Merging only possible for files with unmerged status ('U').");
4429 return REQ_NONE;
4430 }
4431 open_mergetool(status->new.name);
4432 break;
4433
4434 case REQ_EDIT:
4435 if (!status)
4436 return request;
4437
4438 open_editor(status->status != '?', status->new.name);
4439 break;
4440
4441 case REQ_VIEW_BLAME:
4442 if (status) {
4443 string_copy(opt_file, status->new.name);
4444 opt_ref[0] = 0;
4445 }
4446 return request;
4447
4448 case REQ_ENTER:
4449 /* After returning the status view has been split to
4450 * show the stage view. No further reloading is
4451 * necessary. */
4452 status_enter(view, line);
4453 return REQ_NONE;
4454
4455 case REQ_REFRESH:
4456 /* Simply reload the view. */
4457 break;
4458
4459 default:
4460 return request;
4461 }
4462
4463 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4464
4465 return REQ_NONE;
4466 }
4467
4468 static void
4469 status_select(struct view *view, struct line *line)
4470 {
4471 struct status *status = line->data;
4472 char file[SIZEOF_STR] = "all files";
4473 char *text;
4474 char *key;
4475
4476 if (status && !string_format(file, "'%s'", status->new.name))
4477 return;
4478
4479 if (!status && line[1].type == LINE_STAT_NONE)
4480 line++;
4481
4482 switch (line->type) {
4483 case LINE_STAT_STAGED:
4484 text = "Press %s to unstage %s for commit";
4485 break;
4486
4487 case LINE_STAT_UNSTAGED:
4488 text = "Press %s to stage %s for commit";
4489 break;
4490
4491 case LINE_STAT_UNTRACKED:
4492 text = "Press %s to stage %s for addition";
4493 break;
4494
4495 case LINE_STAT_HEAD:
4496 case LINE_STAT_NONE:
4497 text = "Nothing to update";
4498 break;
4499
4500 default:
4501 die("line type %d not handled in switch", line->type);
4502 }
4503
4504 if (status && status->status == 'U') {
4505 text = "Press %s to resolve conflict in %s";
4506 key = get_key(REQ_STATUS_MERGE);
4507
4508 } else {
4509 key = get_key(REQ_STATUS_UPDATE);
4510 }
4511
4512 string_format(view->ref, text, key, file);
4513 }
4514
4515 static bool
4516 status_grep(struct view *view, struct line *line)
4517 {
4518 struct status *status = line->data;
4519 enum { S_STATUS, S_NAME, S_END } state;
4520 char buf[2] = "?";
4521 regmatch_t pmatch;
4522
4523 if (!status)
4524 return FALSE;
4525
4526 for (state = S_STATUS; state < S_END; state++) {
4527 char *text;
4528
4529 switch (state) {
4530 case S_NAME: text = status->new.name; break;
4531 case S_STATUS:
4532 buf[0] = status->status;
4533 text = buf;
4534 break;
4535
4536 default:
4537 return FALSE;
4538 }
4539
4540 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4541 return TRUE;
4542 }
4543
4544 return FALSE;
4545 }
4546
4547 static struct view_ops status_ops = {
4548 "file",
4549 status_open,
4550 NULL,
4551 status_draw,
4552 status_request,
4553 status_grep,
4554 status_select,
4555 };
4556
4557
4558 static bool
4559 stage_diff_line(FILE *pipe, struct line *line)
4560 {
4561 char *buf = line->data;
4562 size_t bufsize = strlen(buf);
4563 size_t written = 0;
4564
4565 while (!ferror(pipe) && written < bufsize) {
4566 written += fwrite(buf + written, 1, bufsize - written, pipe);
4567 }
4568
4569 fputc('\n', pipe);
4570
4571 return written == bufsize;
4572 }
4573
4574 static bool
4575 stage_diff_write(FILE *pipe, struct line *line, struct line *end)
4576 {
4577 while (line < end) {
4578 if (!stage_diff_line(pipe, line++))
4579 return FALSE;
4580 if (line->type == LINE_DIFF_CHUNK ||
4581 line->type == LINE_DIFF_HEADER)
4582 break;
4583 }
4584
4585 return TRUE;
4586 }
4587
4588 static struct line *
4589 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4590 {
4591 for (; view->line < line; line--)
4592 if (line->type == type)
4593 return line;
4594
4595 return NULL;
4596 }
4597
4598 static bool
4599 stage_update_chunk(struct view *view, struct line *chunk)
4600 {
4601 char cmd[SIZEOF_STR];
4602 size_t cmdsize = 0;
4603 struct line *diff_hdr;
4604 FILE *pipe;
4605
4606 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4607 if (!diff_hdr)
4608 return FALSE;
4609
4610 if (opt_cdup[0] &&
4611 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4612 return FALSE;
4613
4614 if (!string_format_from(cmd, &cmdsize,
4615 "git apply --whitespace=nowarn --cached %s - && "
4616 "git update-index -q --unmerged --refresh 2>/dev/null",
4617 stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
4618 return FALSE;
4619
4620 pipe = popen(cmd, "w");
4621 if (!pipe)
4622 return FALSE;
4623
4624 if (!stage_diff_write(pipe, diff_hdr, chunk) ||
4625 !stage_diff_write(pipe, chunk, view->line + view->lines))
4626 chunk = NULL;
4627
4628 pclose(pipe);
4629
4630 return chunk ? TRUE : FALSE;
4631 }
4632
4633 static bool
4634 stage_update(struct view *view, struct line *line)
4635 {
4636 struct line *chunk = NULL;
4637
4638 if (!opt_no_head && stage_line_type != LINE_STAT_UNTRACKED)
4639 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4640
4641 if (chunk) {
4642 if (!stage_update_chunk(view, chunk)) {
4643 report("Failed to apply chunk");
4644 return FALSE;
4645 }
4646
4647 } else if (!stage_status.status) {
4648 view = VIEW(REQ_VIEW_STATUS);
4649
4650 for (line = view->line; line < view->line + view->lines; line++)
4651 if (line->type == stage_line_type)
4652 break;
4653
4654 if (!status_update_files(view, line + 1)) {
4655 report("Failed to update files");
4656 return FALSE;
4657 }
4658
4659 } else if (!status_update_file(&stage_status, stage_line_type)) {
4660 report("Failed to update file");
4661 return FALSE;
4662 }
4663
4664 return TRUE;
4665 }
4666
4667 static void
4668 stage_next(struct view *view, struct line *line)
4669 {
4670 int i;
4671
4672 if (!stage_chunks) {
4673 static size_t alloc = 0;
4674 int *tmp;
4675
4676 for (line = view->line; line < view->line + view->lines; line++) {
4677 if (line->type != LINE_DIFF_CHUNK)
4678 continue;
4679
4680 tmp = realloc_items(stage_chunk, &alloc,
4681 stage_chunks, sizeof(*tmp));
4682 if (!tmp) {
4683 report("Allocation failure");
4684 return;
4685 }
4686
4687 stage_chunk = tmp;
4688 stage_chunk[stage_chunks++] = line - view->line;
4689 }
4690 }
4691
4692 for (i = 0; i < stage_chunks; i++) {
4693 if (stage_chunk[i] > view->lineno) {
4694 do_scroll_view(view, stage_chunk[i] - view->lineno);
4695 report("Chunk %d of %d", i + 1, stage_chunks);
4696 return;
4697 }
4698 }
4699
4700 report("No next chunk found");
4701 }
4702
4703 static enum request
4704 stage_request(struct view *view, enum request request, struct line *line)
4705 {
4706 switch (request) {
4707 case REQ_STATUS_UPDATE:
4708 if (!stage_update(view, line))
4709 return REQ_NONE;
4710 break;
4711
4712 case REQ_STATUS_CHECKOUT:
4713 if (!status_checkout(stage_status.status ? &stage_status : NULL,
4714 stage_line_type, FALSE))
4715 return REQ_NONE;
4716 break;
4717
4718 case REQ_STAGE_NEXT:
4719 if (stage_line_type == LINE_STAT_UNTRACKED) {
4720 report("File is untracked; press %s to add",
4721 get_key(REQ_STATUS_UPDATE));
4722 return REQ_NONE;
4723 }
4724 stage_next(view, line);
4725 return REQ_NONE;
4726
4727 case REQ_EDIT:
4728 if (!stage_status.new.name[0])
4729 return request;
4730
4731 open_editor(stage_status.status != '?', stage_status.new.name);
4732 break;
4733
4734 case REQ_REFRESH:
4735 /* Reload everything ... */
4736 break;
4737
4738 case REQ_VIEW_BLAME:
4739 if (stage_status.new.name[0]) {
4740 string_copy(opt_file, stage_status.new.name);
4741 opt_ref[0] = 0;
4742 }
4743 return request;
4744
4745 case REQ_ENTER:
4746 return pager_request(view, request, line);
4747
4748 default:
4749 return request;
4750 }
4751
4752 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
4753
4754 /* Check whether the staged entry still exists, and close the
4755 * stage view if it doesn't. */
4756 if (!status_exists(&stage_status, stage_line_type))
4757 return REQ_VIEW_CLOSE;
4758
4759 if (stage_line_type == LINE_STAT_UNTRACKED)
4760 opt_pipe = fopen(stage_status.new.name, "r");
4761 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
4762
4763 return REQ_NONE;
4764 }
4765
4766 static struct view_ops stage_ops = {
4767 "line",
4768 NULL,
4769 pager_read,
4770 pager_draw,
4771 stage_request,
4772 pager_grep,
4773 pager_select,
4774 };
4775
4776
4777 /*
4778 * Revision graph
4779 */
4780
4781 struct commit {
4782 char id[SIZEOF_REV]; /* SHA1 ID. */
4783 char title[128]; /* First line of the commit message. */
4784 char author[75]; /* Author of the commit. */
4785 struct tm time; /* Date from the author ident. */
4786 struct ref **refs; /* Repository references. */
4787 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
4788 size_t graph_size; /* The width of the graph array. */
4789 bool has_parents; /* Rewritten --parents seen. */
4790 };
4791
4792 /* Size of rev graph with no "padding" columns */
4793 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
4794
4795 struct rev_graph {
4796 struct rev_graph *prev, *next, *parents;
4797 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
4798 size_t size;
4799 struct commit *commit;
4800 size_t pos;
4801 unsigned int boundary:1;
4802 };
4803
4804 /* Parents of the commit being visualized. */
4805 static struct rev_graph graph_parents[4];
4806
4807 /* The current stack of revisions on the graph. */
4808 static struct rev_graph graph_stacks[4] = {
4809 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
4810 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
4811 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
4812 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
4813 };
4814
4815 static inline bool
4816 graph_parent_is_merge(struct rev_graph *graph)
4817 {
4818 return graph->parents->size > 1;
4819 }
4820
4821 static inline void
4822 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
4823 {
4824 struct commit *commit = graph->commit;
4825
4826 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
4827 commit->graph[commit->graph_size++] = symbol;
4828 }
4829
4830 static void
4831 clear_rev_graph(struct rev_graph *graph)
4832 {
4833 graph->boundary = 0;
4834 graph->size = graph->pos = 0;
4835 graph->commit = NULL;
4836 memset(graph->parents, 0, sizeof(*graph->parents));
4837 }
4838
4839 static void
4840 done_rev_graph(struct rev_graph *graph)
4841 {
4842 if (graph_parent_is_merge(graph) &&
4843 graph->pos < graph->size - 1 &&
4844 graph->next->size == graph->size + graph->parents->size - 1) {
4845 size_t i = graph->pos + graph->parents->size - 1;
4846
4847 graph->commit->graph_size = i * 2;
4848 while (i < graph->next->size - 1) {
4849 append_to_rev_graph(graph, ' ');
4850 append_to_rev_graph(graph, '\\');
4851 i++;
4852 }
4853 }
4854
4855 clear_rev_graph(graph);
4856 }
4857
4858 static void
4859 push_rev_graph(struct rev_graph *graph, char *parent)
4860 {
4861 int i;
4862
4863 /* "Collapse" duplicate parents lines.
4864 *
4865 * FIXME: This needs to also update update the drawn graph but
4866 * for now it just serves as a method for pruning graph lines. */
4867 for (i = 0; i < graph->size; i++)
4868 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
4869 return;
4870
4871 if (graph->size < SIZEOF_REVITEMS) {
4872 string_copy_rev(graph->rev[graph->size++], parent);
4873 }
4874 }
4875
4876 static chtype
4877 get_rev_graph_symbol(struct rev_graph *graph)
4878 {
4879 chtype symbol;
4880
4881 if (graph->boundary)
4882 symbol = REVGRAPH_BOUND;
4883 else if (graph->parents->size == 0)
4884 symbol = REVGRAPH_INIT;
4885 else if (graph_parent_is_merge(graph))
4886 symbol = REVGRAPH_MERGE;
4887 else if (graph->pos >= graph->size)
4888 symbol = REVGRAPH_BRANCH;
4889 else
4890 symbol = REVGRAPH_COMMIT;
4891
4892 return symbol;
4893 }
4894
4895 static void
4896 draw_rev_graph(struct rev_graph *graph)
4897 {
4898 struct rev_filler {
4899 chtype separator, line;
4900 };
4901 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
4902 static struct rev_filler fillers[] = {
4903 { ' ', '|' },
4904 { '`', '.' },
4905 { '\'', ' ' },
4906 { '/', ' ' },
4907 };
4908 chtype symbol = get_rev_graph_symbol(graph);
4909 struct rev_filler *filler;
4910 size_t i;
4911
4912 if (opt_line_graphics)
4913 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
4914
4915 filler = &fillers[DEFAULT];
4916
4917 for (i = 0; i < graph->pos; i++) {
4918 append_to_rev_graph(graph, filler->line);
4919 if (graph_parent_is_merge(graph->prev) &&
4920 graph->prev->pos == i)
4921 filler = &fillers[RSHARP];
4922
4923 append_to_rev_graph(graph, filler->separator);
4924 }
4925
4926 /* Place the symbol for this revision. */
4927 append_to_rev_graph(graph, symbol);
4928
4929 if (graph->prev->size > graph->size)
4930 filler = &fillers[RDIAG];
4931 else
4932 filler = &fillers[DEFAULT];
4933
4934 i++;
4935
4936 for (; i < graph->size; i++) {
4937 append_to_rev_graph(graph, filler->separator);
4938 append_to_rev_graph(graph, filler->line);
4939 if (graph_parent_is_merge(graph->prev) &&
4940 i < graph->prev->pos + graph->parents->size)
4941 filler = &fillers[RSHARP];
4942 if (graph->prev->size > graph->size)
4943 filler = &fillers[LDIAG];
4944 }
4945
4946 if (graph->prev->size > graph->size) {
4947 append_to_rev_graph(graph, filler->separator);
4948 if (filler->line != ' ')
4949 append_to_rev_graph(graph, filler->line);
4950 }
4951 }
4952
4953 /* Prepare the next rev graph */
4954 static void
4955 prepare_rev_graph(struct rev_graph *graph)
4956 {
4957 size_t i;
4958
4959 /* First, traverse all lines of revisions up to the active one. */
4960 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
4961 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
4962 break;
4963
4964 push_rev_graph(graph->next, graph->rev[graph->pos]);
4965 }
4966
4967 /* Interleave the new revision parent(s). */
4968 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
4969 push_rev_graph(graph->next, graph->parents->rev[i]);
4970
4971 /* Lastly, put any remaining revisions. */
4972 for (i = graph->pos + 1; i < graph->size; i++)
4973 push_rev_graph(graph->next, graph->rev[i]);
4974 }
4975
4976 static void
4977 update_rev_graph(struct rev_graph *graph)
4978 {
4979 /* If this is the finalizing update ... */
4980 if (graph->commit)
4981 prepare_rev_graph(graph);
4982
4983 /* Graph visualization needs a one rev look-ahead,
4984 * so the first update doesn't visualize anything. */
4985 if (!graph->prev->commit)
4986 return;
4987
4988 draw_rev_graph(graph->prev);
4989 done_rev_graph(graph->prev->prev);
4990 }
4991
4992
4993 /*
4994 * Main view backend
4995 */
4996
4997 static bool
4998 main_draw(struct view *view, struct line *line, unsigned int lineno)
4999 {
5000 struct commit *commit = line->data;
5001
5002 if (!*commit->author)
5003 return FALSE;
5004
5005 if (opt_date && draw_date(view, &commit->time))
5006 return TRUE;
5007
5008 if (opt_author &&
5009 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5010 return TRUE;
5011
5012 if (opt_rev_graph && commit->graph_size &&
5013 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5014 return TRUE;
5015
5016 if (opt_show_refs && commit->refs) {
5017 size_t i = 0;
5018
5019 do {
5020 enum line_type type;
5021
5022 if (commit->refs[i]->head)
5023 type = LINE_MAIN_HEAD;
5024 else if (commit->refs[i]->ltag)
5025 type = LINE_MAIN_LOCAL_TAG;
5026 else if (commit->refs[i]->tag)
5027 type = LINE_MAIN_TAG;
5028 else if (commit->refs[i]->tracked)
5029 type = LINE_MAIN_TRACKED;
5030 else if (commit->refs[i]->remote)
5031 type = LINE_MAIN_REMOTE;
5032 else
5033 type = LINE_MAIN_REF;
5034
5035 if (draw_text(view, type, "[", TRUE) ||
5036 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5037 draw_text(view, type, "]", TRUE))
5038 return TRUE;
5039
5040 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5041 return TRUE;
5042 } while (commit->refs[i++]->next);
5043 }
5044
5045 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5046 return TRUE;
5047 }
5048
5049 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5050 static bool
5051 main_read(struct view *view, char *line)
5052 {
5053 static struct rev_graph *graph = graph_stacks;
5054 enum line_type type;
5055 struct commit *commit;
5056
5057 if (!line) {
5058 int i;
5059
5060 if (!view->lines && !view->parent)
5061 die("No revisions match the given arguments.");
5062 if (view->lines > 0) {
5063 commit = view->line[view->lines - 1].data;
5064 if (!*commit->author) {
5065 view->lines--;
5066 free(commit);
5067 graph->commit = NULL;
5068 }
5069 }
5070 update_rev_graph(graph);
5071
5072 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5073 clear_rev_graph(&graph_stacks[i]);
5074 return TRUE;
5075 }
5076
5077 type = get_line_type(line);
5078 if (type == LINE_COMMIT) {
5079 commit = calloc(1, sizeof(struct commit));
5080 if (!commit)
5081 return FALSE;
5082
5083 line += STRING_SIZE("commit ");
5084 if (*line == '-') {
5085 graph->boundary = 1;
5086 line++;
5087 }
5088
5089 string_copy_rev(commit->id, line);
5090 commit->refs = get_refs(commit->id);
5091 graph->commit = commit;
5092 add_line_data(view, commit, LINE_MAIN_COMMIT);
5093
5094 while ((line = strchr(line, ' '))) {
5095 line++;
5096 push_rev_graph(graph->parents, line);
5097 commit->has_parents = TRUE;
5098 }
5099 return TRUE;
5100 }
5101
5102 if (!view->lines)
5103 return TRUE;
5104 commit = view->line[view->lines - 1].data;
5105
5106 switch (type) {
5107 case LINE_PARENT:
5108 if (commit->has_parents)
5109 break;
5110 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5111 break;
5112
5113 case LINE_AUTHOR:
5114 {
5115 /* Parse author lines where the name may be empty:
5116 * author <email@address.tld> 1138474660 +0100
5117 */
5118 char *ident = line + STRING_SIZE("author ");
5119 char *nameend = strchr(ident, '<');
5120 char *emailend = strchr(ident, '>');
5121
5122 if (!nameend || !emailend)
5123 break;
5124
5125 update_rev_graph(graph);
5126 graph = graph->next;
5127
5128 *nameend = *emailend = 0;
5129 ident = chomp_string(ident);
5130 if (!*ident) {
5131 ident = chomp_string(nameend + 1);
5132 if (!*ident)
5133 ident = "Unknown";
5134 }
5135
5136 string_ncopy(commit->author, ident, strlen(ident));
5137
5138 /* Parse epoch and timezone */
5139 if (emailend[1] == ' ') {
5140 char *secs = emailend + 2;
5141 char *zone = strchr(secs, ' ');
5142 time_t time = (time_t) atol(secs);
5143
5144 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5145 long tz;
5146
5147 zone++;
5148 tz = ('0' - zone[1]) * 60 * 60 * 10;
5149 tz += ('0' - zone[2]) * 60 * 60;
5150 tz += ('0' - zone[3]) * 60;
5151 tz += ('0' - zone[4]) * 60;
5152
5153 if (zone[0] == '-')
5154 tz = -tz;
5155
5156 time -= tz;
5157 }
5158
5159 gmtime_r(&time, &commit->time);
5160 }
5161 break;
5162 }
5163 default:
5164 /* Fill in the commit title if it has not already been set. */
5165 if (commit->title[0])
5166 break;
5167
5168 /* Require titles to start with a non-space character at the
5169 * offset used by git log. */
5170 if (strncmp(line, " ", 4))
5171 break;
5172 line += 4;
5173 /* Well, if the title starts with a whitespace character,
5174 * try to be forgiving. Otherwise we end up with no title. */
5175 while (isspace(*line))
5176 line++;
5177 if (*line == '\0')
5178 break;
5179 /* FIXME: More graceful handling of titles; append "..." to
5180 * shortened titles, etc. */
5181
5182 string_ncopy(commit->title, line, strlen(line));
5183 }
5184
5185 return TRUE;
5186 }
5187
5188 static enum request
5189 main_request(struct view *view, enum request request, struct line *line)
5190 {
5191 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5192
5193 switch (request) {
5194 case REQ_ENTER:
5195 open_view(view, REQ_VIEW_DIFF, flags);
5196 break;
5197 case REQ_REFRESH:
5198 load_refs();
5199 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5200 break;
5201 default:
5202 return request;
5203 }
5204
5205 return REQ_NONE;
5206 }
5207
5208 static bool
5209 grep_refs(struct ref **refs, regex_t *regex)
5210 {
5211 regmatch_t pmatch;
5212 size_t i = 0;
5213
5214 if (!refs)
5215 return FALSE;
5216 do {
5217 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5218 return TRUE;
5219 } while (refs[i++]->next);
5220
5221 return FALSE;
5222 }
5223
5224 static bool
5225 main_grep(struct view *view, struct line *line)
5226 {
5227 struct commit *commit = line->data;
5228 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5229 char buf[DATE_COLS + 1];
5230 regmatch_t pmatch;
5231
5232 for (state = S_TITLE; state < S_END; state++) {
5233 char *text;
5234
5235 switch (state) {
5236 case S_TITLE: text = commit->title; break;
5237 case S_AUTHOR:
5238 if (!opt_author)
5239 continue;
5240 text = commit->author;
5241 break;
5242 case S_DATE:
5243 if (!opt_date)
5244 continue;
5245 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5246 continue;
5247 text = buf;
5248 break;
5249 case S_REFS:
5250 if (!opt_show_refs)
5251 continue;
5252 if (grep_refs(commit->refs, view->regex) == TRUE)
5253 return TRUE;
5254 continue;
5255 default:
5256 return FALSE;
5257 }
5258
5259 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5260 return TRUE;
5261 }
5262
5263 return FALSE;
5264 }
5265
5266 static void
5267 main_select(struct view *view, struct line *line)
5268 {
5269 struct commit *commit = line->data;
5270
5271 string_copy_rev(view->ref, commit->id);
5272 string_copy_rev(ref_commit, view->ref);
5273 }
5274
5275 static struct view_ops main_ops = {
5276 "commit",
5277 NULL,
5278 main_read,
5279 main_draw,
5280 main_request,
5281 main_grep,
5282 main_select,
5283 };
5284
5285
5286 /*
5287 * Unicode / UTF-8 handling
5288 *
5289 * NOTE: Much of the following code for dealing with unicode is derived from
5290 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5291 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5292 */
5293
5294 /* I've (over)annotated a lot of code snippets because I am not entirely
5295 * confident that the approach taken by this small UTF-8 interface is correct.
5296 * --jonas */
5297
5298 static inline int
5299 unicode_width(unsigned long c)
5300 {
5301 if (c >= 0x1100 &&
5302 (c <= 0x115f /* Hangul Jamo */
5303 || c == 0x2329
5304 || c == 0x232a
5305 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5306 /* CJK ... Yi */
5307 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5308 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5309 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5310 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5311 || (c >= 0xffe0 && c <= 0xffe6)
5312 || (c >= 0x20000 && c <= 0x2fffd)
5313 || (c >= 0x30000 && c <= 0x3fffd)))
5314 return 2;
5315
5316 if (c == '\t')
5317 return opt_tab_size;
5318
5319 return 1;
5320 }
5321
5322 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5323 * Illegal bytes are set one. */
5324 static const unsigned char utf8_bytes[256] = {
5325 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,
5326 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,
5327 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,
5328 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,
5329 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,
5330 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,
5331 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,
5332 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,
5333 };
5334
5335 /* Decode UTF-8 multi-byte representation into a unicode character. */
5336 static inline unsigned long
5337 utf8_to_unicode(const char *string, size_t length)
5338 {
5339 unsigned long unicode;
5340
5341 switch (length) {
5342 case 1:
5343 unicode = string[0];
5344 break;
5345 case 2:
5346 unicode = (string[0] & 0x1f) << 6;
5347 unicode += (string[1] & 0x3f);
5348 break;
5349 case 3:
5350 unicode = (string[0] & 0x0f) << 12;
5351 unicode += ((string[1] & 0x3f) << 6);
5352 unicode += (string[2] & 0x3f);
5353 break;
5354 case 4:
5355 unicode = (string[0] & 0x0f) << 18;
5356 unicode += ((string[1] & 0x3f) << 12);
5357 unicode += ((string[2] & 0x3f) << 6);
5358 unicode += (string[3] & 0x3f);
5359 break;
5360 case 5:
5361 unicode = (string[0] & 0x0f) << 24;
5362 unicode += ((string[1] & 0x3f) << 18);
5363 unicode += ((string[2] & 0x3f) << 12);
5364 unicode += ((string[3] & 0x3f) << 6);
5365 unicode += (string[4] & 0x3f);
5366 break;
5367 case 6:
5368 unicode = (string[0] & 0x01) << 30;
5369 unicode += ((string[1] & 0x3f) << 24);
5370 unicode += ((string[2] & 0x3f) << 18);
5371 unicode += ((string[3] & 0x3f) << 12);
5372 unicode += ((string[4] & 0x3f) << 6);
5373 unicode += (string[5] & 0x3f);
5374 break;
5375 default:
5376 die("Invalid unicode length");
5377 }
5378
5379 /* Invalid characters could return the special 0xfffd value but NUL
5380 * should be just as good. */
5381 return unicode > 0xffff ? 0 : unicode;
5382 }
5383
5384 /* Calculates how much of string can be shown within the given maximum width
5385 * and sets trimmed parameter to non-zero value if all of string could not be
5386 * shown. If the reserve flag is TRUE, it will reserve at least one
5387 * trailing character, which can be useful when drawing a delimiter.
5388 *
5389 * Returns the number of bytes to output from string to satisfy max_width. */
5390 static size_t
5391 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5392 {
5393 const char *start = string;
5394 const char *end = strchr(string, '\0');
5395 unsigned char last_bytes = 0;
5396 size_t last_ucwidth = 0;
5397
5398 *width = 0;
5399 *trimmed = 0;
5400
5401 while (string < end) {
5402 int c = *(unsigned char *) string;
5403 unsigned char bytes = utf8_bytes[c];
5404 size_t ucwidth;
5405 unsigned long unicode;
5406
5407 if (string + bytes > end)
5408 break;
5409
5410 /* Change representation to figure out whether
5411 * it is a single- or double-width character. */
5412
5413 unicode = utf8_to_unicode(string, bytes);
5414 /* FIXME: Graceful handling of invalid unicode character. */
5415 if (!unicode)
5416 break;
5417
5418 ucwidth = unicode_width(unicode);
5419 *width += ucwidth;
5420 if (*width > max_width) {
5421 *trimmed = 1;
5422 *width -= ucwidth;
5423 if (reserve && *width == max_width) {
5424 string -= last_bytes;
5425 *width -= last_ucwidth;
5426 }
5427 break;
5428 }
5429
5430 string += bytes;
5431 last_bytes = bytes;
5432 last_ucwidth = ucwidth;
5433 }
5434
5435 return string - start;
5436 }
5437
5438
5439 /*
5440 * Status management
5441 */
5442
5443 /* Whether or not the curses interface has been initialized. */
5444 static bool cursed = FALSE;
5445
5446 /* The status window is used for polling keystrokes. */
5447 static WINDOW *status_win;
5448
5449 static bool status_empty = TRUE;
5450
5451 /* Update status and title window. */
5452 static void
5453 report(const char *msg, ...)
5454 {
5455 struct view *view = display[current_view];
5456
5457 if (input_mode)
5458 return;
5459
5460 if (!view) {
5461 char buf[SIZEOF_STR];
5462 va_list args;
5463
5464 va_start(args, msg);
5465 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5466 buf[sizeof(buf) - 1] = 0;
5467 buf[sizeof(buf) - 2] = '.';
5468 buf[sizeof(buf) - 3] = '.';
5469 buf[sizeof(buf) - 4] = '.';
5470 }
5471 va_end(args);
5472 die("%s", buf);
5473 }
5474
5475 if (!status_empty || *msg) {
5476 va_list args;
5477
5478 va_start(args, msg);
5479
5480 wmove(status_win, 0, 0);
5481 if (*msg) {
5482 vwprintw(status_win, msg, args);
5483 status_empty = FALSE;
5484 } else {
5485 status_empty = TRUE;
5486 }
5487 wclrtoeol(status_win);
5488 wrefresh(status_win);
5489
5490 va_end(args);
5491 }
5492
5493 update_view_title(view);
5494 update_display_cursor(view);
5495 }
5496
5497 /* Controls when nodelay should be in effect when polling user input. */
5498 static void
5499 set_nonblocking_input(bool loading)
5500 {
5501 static unsigned int loading_views;
5502
5503 if ((loading == FALSE && loading_views-- == 1) ||
5504 (loading == TRUE && loading_views++ == 0))
5505 nodelay(status_win, loading);
5506 }
5507
5508 static void
5509 init_display(void)
5510 {
5511 int x, y;
5512
5513 /* Initialize the curses library */
5514 if (isatty(STDIN_FILENO)) {
5515 cursed = !!initscr();
5516 } else {
5517 /* Leave stdin and stdout alone when acting as a pager. */
5518 FILE *io = fopen("/dev/tty", "r+");
5519
5520 if (!io)
5521 die("Failed to open /dev/tty");
5522 cursed = !!newterm(NULL, io, io);
5523 }
5524
5525 if (!cursed)
5526 die("Failed to initialize curses");
5527
5528 nonl(); /* Tell curses not to do NL->CR/NL on output */
5529 cbreak(); /* Take input chars one at a time, no wait for \n */
5530 noecho(); /* Don't echo input */
5531 leaveok(stdscr, TRUE);
5532
5533 if (has_colors())
5534 init_colors();
5535
5536 getmaxyx(stdscr, y, x);
5537 status_win = newwin(1, 0, y - 1, 0);
5538 if (!status_win)
5539 die("Failed to create status window");
5540
5541 /* Enable keyboard mapping */
5542 keypad(status_win, TRUE);
5543 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5544
5545 TABSIZE = opt_tab_size;
5546 if (opt_line_graphics) {
5547 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5548 }
5549 }
5550
5551 static bool
5552 prompt_yesno(const char *prompt)
5553 {
5554 enum { WAIT, STOP, CANCEL } status = WAIT;
5555 bool answer = FALSE;
5556
5557 while (status == WAIT) {
5558 struct view *view;
5559 int i, key;
5560
5561 input_mode = TRUE;
5562
5563 foreach_view (view, i)
5564 update_view(view);
5565
5566 input_mode = FALSE;
5567
5568 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
5569 wclrtoeol(status_win);
5570
5571 /* Refresh, accept single keystroke of input */
5572 key = wgetch(status_win);
5573 switch (key) {
5574 case ERR:
5575 break;
5576
5577 case 'y':
5578 case 'Y':
5579 answer = TRUE;
5580 status = STOP;
5581 break;
5582
5583 case KEY_ESC:
5584 case KEY_RETURN:
5585 case KEY_ENTER:
5586 case KEY_BACKSPACE:
5587 case 'n':
5588 case 'N':
5589 case '\n':
5590 default:
5591 answer = FALSE;
5592 status = CANCEL;
5593 }
5594 }
5595
5596 /* Clear the status window */
5597 status_empty = FALSE;
5598 report("");
5599
5600 return answer;
5601 }
5602
5603 static char *
5604 read_prompt(const char *prompt)
5605 {
5606 enum { READING, STOP, CANCEL } status = READING;
5607 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
5608 int pos = 0;
5609
5610 while (status == READING) {
5611 struct view *view;
5612 int i, key;
5613
5614 input_mode = TRUE;
5615
5616 foreach_view (view, i)
5617 update_view(view);
5618
5619 input_mode = FALSE;
5620
5621 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5622 wclrtoeol(status_win);
5623
5624 /* Refresh, accept single keystroke of input */
5625 key = wgetch(status_win);
5626 switch (key) {
5627 case KEY_RETURN:
5628 case KEY_ENTER:
5629 case '\n':
5630 status = pos ? STOP : CANCEL;
5631 break;
5632
5633 case KEY_BACKSPACE:
5634 if (pos > 0)
5635 pos--;
5636 else
5637 status = CANCEL;
5638 break;
5639
5640 case KEY_ESC:
5641 status = CANCEL;
5642 break;
5643
5644 case ERR:
5645 break;
5646
5647 default:
5648 if (pos >= sizeof(buf)) {
5649 report("Input string too long");
5650 return NULL;
5651 }
5652
5653 if (isprint(key))
5654 buf[pos++] = (char) key;
5655 }
5656 }
5657
5658 /* Clear the status window */
5659 status_empty = FALSE;
5660 report("");
5661
5662 if (status == CANCEL)
5663 return NULL;
5664
5665 buf[pos++] = 0;
5666
5667 return buf;
5668 }
5669
5670 /*
5671 * Repository references
5672 */
5673
5674 static struct ref *refs = NULL;
5675 static size_t refs_alloc = 0;
5676 static size_t refs_size = 0;
5677
5678 /* Id <-> ref store */
5679 static struct ref ***id_refs = NULL;
5680 static size_t id_refs_alloc = 0;
5681 static size_t id_refs_size = 0;
5682
5683 static struct ref **
5684 get_refs(char *id)
5685 {
5686 struct ref ***tmp_id_refs;
5687 struct ref **ref_list = NULL;
5688 size_t ref_list_alloc = 0;
5689 size_t ref_list_size = 0;
5690 size_t i;
5691
5692 for (i = 0; i < id_refs_size; i++)
5693 if (!strcmp(id, id_refs[i][0]->id))
5694 return id_refs[i];
5695
5696 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
5697 sizeof(*id_refs));
5698 if (!tmp_id_refs)
5699 return NULL;
5700
5701 id_refs = tmp_id_refs;
5702
5703 for (i = 0; i < refs_size; i++) {
5704 struct ref **tmp;
5705
5706 if (strcmp(id, refs[i].id))
5707 continue;
5708
5709 tmp = realloc_items(ref_list, &ref_list_alloc,
5710 ref_list_size + 1, sizeof(*ref_list));
5711 if (!tmp) {
5712 if (ref_list)
5713 free(ref_list);
5714 return NULL;
5715 }
5716
5717 ref_list = tmp;
5718 if (ref_list_size > 0)
5719 ref_list[ref_list_size - 1]->next = 1;
5720 ref_list[ref_list_size] = &refs[i];
5721
5722 /* XXX: The properties of the commit chains ensures that we can
5723 * safely modify the shared ref. The repo references will
5724 * always be similar for the same id. */
5725 ref_list[ref_list_size]->next = 0;
5726 ref_list_size++;
5727 }
5728
5729 if (ref_list)
5730 id_refs[id_refs_size++] = ref_list;
5731
5732 return ref_list;
5733 }
5734
5735 static int
5736 read_ref(char *id, size_t idlen, char *name, size_t namelen)
5737 {
5738 struct ref *ref;
5739 bool tag = FALSE;
5740 bool ltag = FALSE;
5741 bool remote = FALSE;
5742 bool tracked = FALSE;
5743 bool check_replace = FALSE;
5744 bool head = FALSE;
5745
5746 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
5747 if (!strcmp(name + namelen - 3, "^{}")) {
5748 namelen -= 3;
5749 name[namelen] = 0;
5750 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
5751 check_replace = TRUE;
5752 } else {
5753 ltag = TRUE;
5754 }
5755
5756 tag = TRUE;
5757 namelen -= STRING_SIZE("refs/tags/");
5758 name += STRING_SIZE("refs/tags/");
5759
5760 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
5761 remote = TRUE;
5762 namelen -= STRING_SIZE("refs/remotes/");
5763 name += STRING_SIZE("refs/remotes/");
5764 tracked = !strcmp(opt_remote, name);
5765
5766 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5767 namelen -= STRING_SIZE("refs/heads/");
5768 name += STRING_SIZE("refs/heads/");
5769 head = !strncmp(opt_head, name, namelen);
5770
5771 } else if (!strcmp(name, "HEAD")) {
5772 opt_no_head = FALSE;
5773 return OK;
5774 }
5775
5776 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
5777 /* it's an annotated tag, replace the previous sha1 with the
5778 * resolved commit id; relies on the fact git-ls-remote lists
5779 * the commit id of an annotated tag right beofre the commit id
5780 * it points to. */
5781 refs[refs_size - 1].ltag = ltag;
5782 string_copy_rev(refs[refs_size - 1].id, id);
5783
5784 return OK;
5785 }
5786 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
5787 if (!refs)
5788 return ERR;
5789
5790 ref = &refs[refs_size++];
5791 ref->name = malloc(namelen + 1);
5792 if (!ref->name)
5793 return ERR;
5794
5795 strncpy(ref->name, name, namelen);
5796 ref->name[namelen] = 0;
5797 ref->head = head;
5798 ref->tag = tag;
5799 ref->ltag = ltag;
5800 ref->remote = remote;
5801 ref->tracked = tracked;
5802 string_copy_rev(ref->id, id);
5803
5804 return OK;
5805 }
5806
5807 static int
5808 load_refs(void)
5809 {
5810 const char *cmd_env = getenv("TIG_LS_REMOTE");
5811 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
5812
5813 if (!*opt_git_dir)
5814 return OK;
5815
5816 while (refs_size > 0)
5817 free(refs[--refs_size].name);
5818 while (id_refs_size > 0)
5819 free(id_refs[--id_refs_size]);
5820
5821 return read_properties(popen(cmd, "r"), "\t", read_ref);
5822 }
5823
5824 static int
5825 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
5826 {
5827 if (!strcmp(name, "i18n.commitencoding"))
5828 string_ncopy(opt_encoding, value, valuelen);
5829
5830 if (!strcmp(name, "core.editor"))
5831 string_ncopy(opt_editor, value, valuelen);
5832
5833 /* branch.<head>.remote */
5834 if (*opt_head &&
5835 !strncmp(name, "branch.", 7) &&
5836 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5837 !strcmp(name + 7 + strlen(opt_head), ".remote"))
5838 string_ncopy(opt_remote, value, valuelen);
5839
5840 if (*opt_head && *opt_remote &&
5841 !strncmp(name, "branch.", 7) &&
5842 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5843 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
5844 size_t from = strlen(opt_remote);
5845
5846 if (!strncmp(value, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5847 value += STRING_SIZE("refs/heads/");
5848 valuelen -= STRING_SIZE("refs/heads/");
5849 }
5850
5851 if (!string_format_from(opt_remote, &from, "/%s", value))
5852 opt_remote[0] = 0;
5853 }
5854
5855 return OK;
5856 }
5857
5858 static int
5859 load_git_config(void)
5860 {
5861 return read_properties(popen("git " GIT_CONFIG " --list", "r"),
5862 "=", read_repo_config_option);
5863 }
5864
5865 static int
5866 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
5867 {
5868 if (!opt_git_dir[0]) {
5869 string_ncopy(opt_git_dir, name, namelen);
5870
5871 } else if (opt_is_inside_work_tree == -1) {
5872 /* This can be 3 different values depending on the
5873 * version of git being used. If git-rev-parse does not
5874 * understand --is-inside-work-tree it will simply echo
5875 * the option else either "true" or "false" is printed.
5876 * Default to true for the unknown case. */
5877 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
5878
5879 } else if (opt_cdup[0] == ' ') {
5880 string_ncopy(opt_cdup, name, namelen);
5881 } else {
5882 if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5883 namelen -= STRING_SIZE("refs/heads/");
5884 name += STRING_SIZE("refs/heads/");
5885 string_ncopy(opt_head, name, namelen);
5886 }
5887 }
5888
5889 return OK;
5890 }
5891
5892 static int
5893 load_repo_info(void)
5894 {
5895 int result;
5896 FILE *pipe = popen("(git rev-parse --git-dir --is-inside-work-tree "
5897 " --show-cdup; git symbolic-ref HEAD) 2>/dev/null", "r");
5898
5899 /* XXX: The line outputted by "--show-cdup" can be empty so
5900 * initialize it to something invalid to make it possible to
5901 * detect whether it has been set or not. */
5902 opt_cdup[0] = ' ';
5903
5904 result = read_properties(pipe, "=", read_repo_info);
5905 if (opt_cdup[0] == ' ')
5906 opt_cdup[0] = 0;
5907
5908 return result;
5909 }
5910
5911 static int
5912 read_properties(FILE *pipe, const char *separators,
5913 int (*read_property)(char *, size_t, char *, size_t))
5914 {
5915 char buffer[BUFSIZ];
5916 char *name;
5917 int state = OK;
5918
5919 if (!pipe)
5920 return ERR;
5921
5922 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
5923 char *value;
5924 size_t namelen;
5925 size_t valuelen;
5926
5927 name = chomp_string(name);
5928 namelen = strcspn(name, separators);
5929
5930 if (name[namelen]) {
5931 name[namelen] = 0;
5932 value = chomp_string(name + namelen + 1);
5933 valuelen = strlen(value);
5934
5935 } else {
5936 value = "";
5937 valuelen = 0;
5938 }
5939
5940 state = read_property(name, namelen, value, valuelen);
5941 }
5942
5943 if (state != ERR && ferror(pipe))
5944 state = ERR;
5945
5946 pclose(pipe);
5947
5948 return state;
5949 }
5950
5951
5952 /*
5953 * Main
5954 */
5955
5956 static void __NORETURN
5957 quit(int sig)
5958 {
5959 /* XXX: Restore tty modes and let the OS cleanup the rest! */
5960 if (cursed)
5961 endwin();
5962 exit(0);
5963 }
5964
5965 static void __NORETURN
5966 die(const char *err, ...)
5967 {
5968 va_list args;
5969
5970 endwin();
5971
5972 va_start(args, err);
5973 fputs("tig: ", stderr);
5974 vfprintf(stderr, err, args);
5975 fputs("\n", stderr);
5976 va_end(args);
5977
5978 exit(1);
5979 }
5980
5981 static void
5982 warn(const char *msg, ...)
5983 {
5984 va_list args;
5985
5986 va_start(args, msg);
5987 fputs("tig warning: ", stderr);
5988 vfprintf(stderr, msg, args);
5989 fputs("\n", stderr);
5990 va_end(args);
5991 }
5992
5993 int
5994 main(int argc, char *argv[])
5995 {
5996 struct view *view;
5997 enum request request;
5998 size_t i;
5999
6000 signal(SIGINT, quit);
6001
6002 if (setlocale(LC_ALL, "")) {
6003 char *codeset = nl_langinfo(CODESET);
6004
6005 string_ncopy(opt_codeset, codeset, strlen(codeset));
6006 }
6007
6008 if (load_repo_info() == ERR)
6009 die("Failed to load repo info.");
6010
6011 if (load_options() == ERR)
6012 die("Failed to load user config.");
6013
6014 if (load_git_config() == ERR)
6015 die("Failed to load repo config.");
6016
6017 request = parse_options(argc, argv);
6018 if (request == REQ_NONE)
6019 return 0;
6020
6021 /* Require a git repository unless when running in pager mode. */
6022 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6023 die("Not a git repository");
6024
6025 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6026 opt_utf8 = FALSE;
6027
6028 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6029 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6030 if (opt_iconv == ICONV_NONE)
6031 die("Failed to initialize character set conversion");
6032 }
6033
6034 if (load_refs() == ERR)
6035 die("Failed to load refs.");
6036
6037 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
6038 view->cmd_env = getenv(view->cmd_env);
6039
6040 init_display();
6041
6042 while (view_driver(display[current_view], request)) {
6043 int key;
6044 int i;
6045
6046 foreach_view (view, i)
6047 update_view(view);
6048
6049 /* Refresh, accept single keystroke of input */
6050 key = wgetch(status_win);
6051
6052 /* wgetch() with nodelay() enabled returns ERR when there's no
6053 * input. */
6054 if (key == ERR) {
6055 request = REQ_NONE;
6056 continue;
6057 }
6058
6059 request = get_keybinding(display[current_view]->keymap, key);
6060
6061 /* Some low-level request handling. This keeps access to
6062 * status_win restricted. */
6063 switch (request) {
6064 case REQ_PROMPT:
6065 {
6066 char *cmd = read_prompt(":");
6067
6068 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
6069 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
6070 request = REQ_VIEW_DIFF;
6071 } else {
6072 request = REQ_VIEW_PAGER;
6073 }
6074
6075 /* Always reload^Wrerun commands from the prompt. */
6076 open_view(view, request, OPEN_RELOAD);
6077 }
6078
6079 request = REQ_NONE;
6080 break;
6081 }
6082 case REQ_SEARCH:
6083 case REQ_SEARCH_BACK:
6084 {
6085 const char *prompt = request == REQ_SEARCH
6086 ? "/" : "?";
6087 char *search = read_prompt(prompt);
6088
6089 if (search)
6090 string_ncopy(opt_search, search, strlen(search));
6091 else
6092 request = REQ_NONE;
6093 break;
6094 }
6095 case REQ_SCREEN_RESIZE:
6096 {
6097 int height, width;
6098
6099 getmaxyx(stdscr, height, width);
6100
6101 /* Resize the status view and let the view driver take
6102 * care of resizing the displayed views. */
6103 wresize(status_win, 1, width);
6104 mvwin(status_win, height - 1, 0);
6105 wrefresh(status_win);
6106 break;
6107 }
6108 default:
6109 break;
6110 }
6111 }
6112
6113 quit(0);
6114
6115 return 0;
6116 }
Text-mode interface for git