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Fix handling of REQ_NEXT/REQ_PREVIOUS
[tig] / tig.c
CommitLineData
4a2909a7 1/* Copyright (c) 2006 Jonas Fonseca <fonseca@diku.dk>
192d9a60 2 *
5cfbde75
JF		 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.
192d9a60
JF		 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 */
b801d8b2 13
73785605
JF		 14#ifndef VERSION
15#define VERSION "unknown-version"
b76c2afc
JF		 16#endif
17
8855ada4
JF		 18#ifndef DEBUG
19#define NDEBUG
20#endif
21
22f66b0a 22#include <assert.h>
4c6fabc2 23#include <errno.h>
22f66b0a
JF		 24#include <ctype.h>
25#include <signal.h>
b801d8b2 26#include <stdarg.h>
b801d8b2 27#include <stdio.h>
22f66b0a 28#include <stdlib.h>
b801d8b2 29#include <string.h>
810f0078
JF		 30#include <sys/types.h>
31#include <sys/stat.h>
6908bdbd 32#include <unistd.h>
b76c2afc 33#include <time.h>
b801d8b2 34
4af34daa
JF		 35#include <regex.h>
36
6b68fd24
JF		 37#include <locale.h>
38#include <langinfo.h>
39#include <iconv.h>
40
b801d8b2 41#include <curses.h>
b801d8b2 42
e2da526d
JF		 43#if __GNUC__ >= 3
44#define __NORETURN __attribute__((__noreturn__))
45#else
46#define __NORETURN
47#endif
48
49static void __NORETURN die(const char *err, ...);
b801d8b2 50static void report(const char *msg, ...);
5699e0cf 51static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
1ba2ae4b 52static void set_nonblocking_input(bool loading);
10e290ee 53static size_t utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed);
6b161b31
JF		 54
55#define ABS(x) ((x) >= 0 ? (x) : -(x))
56#define MIN(x, y) ((x) < (y) ? (x) : (y))
57
58#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
59#define STRING_SIZE(x) (sizeof(x) - 1)
b76c2afc 60
17482b11 61#define SIZEOF_STR 1024 /* Default string size. */
2e8488b4 62#define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
10446330 63#define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL */
c8d60a25
JF		 64
65/* Revision graph */
66
67#define REVGRAPH_INIT 'I'
68#define REVGRAPH_MERGE 'M'
69#define REVGRAPH_BRANCH '+'
70#define REVGRAPH_COMMIT '*'
71#define REVGRAPH_LINE '|'
72
54efb62b 73#define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
b801d8b2 74
82e78006
JF		 75/* This color name can be used to refer to the default term colors. */
76#define COLOR_DEFAULT (-1)
78c70acd 77
6b68fd24
JF		 78#define ICONV_NONE ((iconv_t) -1)
79
82e78006 80/* The format and size of the date column in the main view. */
4c6fabc2 81#define DATE_FORMAT "%Y-%m-%d %H:%M"
6b161b31 82#define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
4c6fabc2 83
10e290ee
JF		 84#define AUTHOR_COLS 20
85
a28bcc22 86/* The default interval between line numbers. */
4a2909a7 87#define NUMBER_INTERVAL 1
82e78006 88
6706b2ba
JF		 89#define TABSIZE 8
90
a28bcc22
JF		 91#define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
92
8eb62770 93#define TIG_LS_REMOTE \
337d7377 94 "git ls-remote $(git rev-parse --git-dir) 2>/dev/null"
8eb62770
JF		 95
96#define TIG_DIFF_CMD \
73fb51d5 97 "git show --root --patch-with-stat --find-copies-harder -B -C %s 2>/dev/null"
8eb62770
JF		 98
99#define TIG_LOG_CMD \
8fee6614 100 "git log --cc --stat -n100 %s 2>/dev/null"
8eb62770
JF		 101
102#define TIG_MAIN_CMD \
8fee6614 103 "git log --topo-order --pretty=raw %s 2>/dev/null"
8eb62770 104
e733ee54
JF		 105#define TIG_TREE_CMD \
106 "git ls-tree %s %s"
107
108#define TIG_BLOB_CMD \
109 "git cat-file blob %s"
110
8eb62770
JF		 111/* XXX: Needs to be defined to the empty string. */
112#define TIG_HELP_CMD ""
113#define TIG_PAGER_CMD ""
173d76ea 114#define TIG_STATUS_CMD ""
8eb62770 115
8855ada4 116/* Some ascii-shorthands fitted into the ncurses namespace. */
a28bcc22
JF		 117#define KEY_TAB '\t'
118#define KEY_RETURN '\r'
4a2909a7
JF		 119#define KEY_ESC 27
120
6706b2ba 121
c34d9c9f 122struct ref {
468876c9 123 char *name; /* Ref name; tag or head names are shortened. */
10446330 124 char id[SIZEOF_REV]; /* Commit SHA1 ID */
468876c9 125 unsigned int tag:1; /* Is it a tag? */
e15ec88e 126 unsigned int remote:1; /* Is it a remote ref? */
468876c9 127 unsigned int next:1; /* For ref lists: are there more refs? */
c34d9c9f
JF		 128};
129
ff26aa29 130static struct ref **get_refs(char *id);
4c6fabc2 131
660e09ad
JF		 132struct int_map {
133 const char *name;
134 int namelen;
135 int value;
136};
137
138static int
139set_from_int_map(struct int_map *map, size_t map_size,
140 int *value, const char *name, int namelen)
141{
142
143 int i;
144
145 for (i = 0; i < map_size; i++)
146 if (namelen == map[i].namelen &&
147 !strncasecmp(name, map[i].name, namelen)) {
148 *value = map[i].value;
149 return OK;
150 }
151
152 return ERR;
153}
154
6706b2ba 155
03a93dbb
JF		 156/*
157 * String helpers
158 */
78c70acd 159
82e78006 160static inline void
9a48919b 161string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
82e78006 162{
9a48919b
JF		 163 if (srclen > dstlen - 1)
164 srclen = dstlen - 1;
03a93dbb 165
9a48919b
JF		 166 strncpy(dst, src, srclen);
167 dst[srclen] = 0;
82e78006
JF		 168}
169
9a48919b
JF		 170/* Shorthands for safely copying into a fixed buffer. */
171
82e78006 172#define string_copy(dst, src) \
751e27c9 173 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
9a48919b
JF		 174
175#define string_ncopy(dst, src, srclen) \
176 string_ncopy_do(dst, sizeof(dst), src, srclen)
82e78006 177
2463b4ea
JF		 178#define string_copy_rev(dst, src) \
179 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
180
91c5d983
JF		 181#define string_add(dst, from, src) \
182 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
183
4a63c884
JF		 184static char *
185chomp_string(char *name)
186{
187 int namelen;
188
189 while (isspace(*name))
190 name++;
191
192 namelen = strlen(name) - 1;
193 while (namelen > 0 && isspace(name[namelen]))
194 name[namelen--] = 0;
195
196 return name;
197}
198
cc2d1364 199static bool
d65ced0d 200string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
cc2d1364
JF		 201{
202 va_list args;
d65ced0d 203 size_t pos = bufpos ? *bufpos : 0;
cc2d1364
JF		 204
205 va_start(args, fmt);
206 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
207 va_end(args);
208
209 if (bufpos)
210 *bufpos = pos;
211
212 return pos >= bufsize ? FALSE : TRUE;
213}
214
215#define string_format(buf, fmt, args...) \
216 string_nformat(buf, sizeof(buf), NULL, fmt, args)
217
218#define string_format_from(buf, from, fmt, args...) \
219 string_nformat(buf, sizeof(buf), from, fmt, args)
6706b2ba 220
201f5a18
JF		 221static int
222string_enum_compare(const char *str1, const char *str2, int len)
223{
224 size_t i;
225
226#define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
227
228 /* Diff-Header == DIFF_HEADER */
229 for (i = 0; i < len; i++) {
230 if (toupper(str1[i]) == toupper(str2[i]))
231 continue;
232
233 if (string_enum_sep(str1[i]) &&
234 string_enum_sep(str2[i]))
235 continue;
236
237 return str1[i] - str2[i];
238 }
239
240 return 0;
241}
242
03a93dbb
JF		 243/* Shell quoting
244 *
245 * NOTE: The following is a slightly modified copy of the git project's shell
246 * quoting routines found in the quote.c file.
247 *
248 * Help to copy the thing properly quoted for the shell safety. any single
249 * quote is replaced with '\'', any exclamation point is replaced with '\!',
250 * and the whole thing is enclosed in a
251 *
252 * E.g.
253 * original sq_quote result
254 * name ==> name ==> 'name'
255 * a b ==> a b ==> 'a b'
256 * a'b ==> a'\''b ==> 'a'\''b'
257 * a!b ==> a'\!'b ==> 'a'\!'b'
258 */
259
260static size_t
17482b11 261sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
03a93dbb
JF		 262{
263 char c;
264
17482b11 265#define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
03a93dbb
JF		 266
267 BUFPUT('\'');
268 while ((c = *src++)) {
269 if (c == '\'' || c == '!') {
270 BUFPUT('\'');
271 BUFPUT('\\');
272 BUFPUT(c);
273 BUFPUT('\'');
274 } else {
275 BUFPUT(c);
276 }
277 }
278 BUFPUT('\'');
279
f0f114ac
JF		 280 if (bufsize < SIZEOF_STR)
281 buf[bufsize] = 0;
282
03a93dbb
JF		 283 return bufsize;
284}
285
82e78006 286
24b5b3e0
JF		 287/*
288 * User requests
289 */
290
291#define REQ_INFO \
292 /* XXX: Keep the view request first and in sync with views[]. */ \
293 REQ_GROUP("View switching") \
294 REQ_(VIEW_MAIN, "Show main view"), \
295 REQ_(VIEW_DIFF, "Show diff view"), \
296 REQ_(VIEW_LOG, "Show log view"), \
e733ee54
JF		 297 REQ_(VIEW_TREE, "Show tree view"), \
298 REQ_(VIEW_BLOB, "Show blob view"), \
24b5b3e0
JF		 299 REQ_(VIEW_HELP, "Show help page"), \
300 REQ_(VIEW_PAGER, "Show pager view"), \
173d76ea 301 REQ_(VIEW_STATUS, "Show status view"), \
24b5b3e0
JF		 302 \
303 REQ_GROUP("View manipulation") \
304 REQ_(ENTER, "Enter current line and scroll"), \
305 REQ_(NEXT, "Move to next"), \
306 REQ_(PREVIOUS, "Move to previous"), \
307 REQ_(VIEW_NEXT, "Move focus to next view"), \
308 REQ_(VIEW_CLOSE, "Close the current view"), \
309 REQ_(QUIT, "Close all views and quit"), \
310 \
311 REQ_GROUP("Cursor navigation") \
312 REQ_(MOVE_UP, "Move cursor one line up"), \
313 REQ_(MOVE_DOWN, "Move cursor one line down"), \
314 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
315 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
316 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
317 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
318 \
319 REQ_GROUP("Scrolling") \
320 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
321 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
322 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
323 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
324 \
4af34daa
JF		 325 REQ_GROUP("Searching") \
326 REQ_(SEARCH, "Search the view"), \
327 REQ_(SEARCH_BACK, "Search backwards in the view"), \
328 REQ_(FIND_NEXT, "Find next search match"), \
329 REQ_(FIND_PREV, "Find previous search match"), \
330 \
24b5b3e0 331 REQ_GROUP("Misc") \
1d754561 332 REQ_(NONE, "Do nothing"), \
24b5b3e0 333 REQ_(PROMPT, "Bring up the prompt"), \
24b5b3e0
JF		 334 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
335 REQ_(SCREEN_RESIZE, "Resize the screen"), \
336 REQ_(SHOW_VERSION, "Show version information"), \
337 REQ_(STOP_LOADING, "Stop all loading views"), \
54efb62b 338 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
ca1d71ea 339 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
0cea0d43
JF		 340 REQ_(STATUS_UPDATE, "Update file status"), \
341 REQ_(EDIT, "Open in editor")
24b5b3e0
JF		 342
343
344/* User action requests. */
345enum request {
346#define REQ_GROUP(help)
347#define REQ_(req, help) REQ_##req
348
349 /* Offset all requests to avoid conflicts with ncurses getch values. */
350 REQ_OFFSET = KEY_MAX + 1,
04e2b7b2
JF		 351 REQ_INFO,
352 REQ_UNKNOWN,
24b5b3e0
JF		 353
354#undef REQ_GROUP
355#undef REQ_
356};
357
358struct request_info {
359 enum request request;
04e2b7b2
JF		 360 char *name;
361 int namelen;
24b5b3e0
JF		 362 char *help;
363};
364
365static struct request_info req_info[] = {
04e2b7b2
JF		 366#define REQ_GROUP(help) { 0, NULL, 0, (help) },
367#define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
24b5b3e0
JF		 368 REQ_INFO
369#undef REQ_GROUP
370#undef REQ_
371};
372
04e2b7b2
JF		 373static enum request
374get_request(const char *name)
375{
376 int namelen = strlen(name);
377 int i;
378
379 for (i = 0; i < ARRAY_SIZE(req_info); i++)
380 if (req_info[i].namelen == namelen &&
381 !string_enum_compare(req_info[i].name, name, namelen))
382 return req_info[i].request;
383
384 return REQ_UNKNOWN;
385}
386
387
8eb62770
JF		 388/*
389 * Options
390 */
b76c2afc 391
4b8c01a3 392static const char usage[] =
73785605 393"tig " VERSION " (" __DATE__ ")\n"
4b8c01a3
JF		 394"\n"
395"Usage: tig [options]\n"
396" or: tig [options] [--] [git log options]\n"
397" or: tig [options] log [git log options]\n"
398" or: tig [options] diff [git diff options]\n"
399" or: tig [options] show [git show options]\n"
400" or: tig [options] < [git command output]\n"
401"\n"
402"Options:\n"
403" -l Start up in log view\n"
404" -d Start up in diff view\n"
173d76ea 405" -S Start up in status view\n"
4b8c01a3 406" -n[I], --line-number[=I] Show line numbers with given interval\n"
b3c965c9 407" -b[N], --tab-size[=N] Set number of spaces for tab expansion\n"
4b8c01a3
JF		 408" -- Mark end of tig options\n"
409" -v, --version Show version and exit\n"
410" -h, --help Show help message and exit\n";
411
6706b2ba 412/* Option and state variables. */
92d30f5c 413static bool opt_line_number = FALSE;
11ce319e 414static bool opt_rev_graph = FALSE;
92d30f5c
JF		 415static int opt_num_interval = NUMBER_INTERVAL;
416static int opt_tab_size = TABSIZE;
417static enum request opt_request = REQ_VIEW_MAIN;
418static char opt_cmd[SIZEOF_STR] = "";
e733ee54 419static char opt_path[SIZEOF_STR] = "";
92d30f5c
JF		 420static FILE *opt_pipe = NULL;
421static char opt_encoding[20] = "UTF-8";
422static bool opt_utf8 = TRUE;
423static char opt_codeset[20] = "UTF-8";
424static iconv_t opt_iconv = ICONV_NONE;
425static char opt_search[SIZEOF_STR] = "";
91c5d983 426static char opt_cdup[SIZEOF_STR] = "";
810f0078 427static char opt_git_dir[SIZEOF_STR] = "";
0cea0d43 428static char opt_editor[SIZEOF_STR] = "";
b76c2afc 429
6dbf6c19
JF		 430enum option_type {
431 OPT_NONE,
432 OPT_INT,
433};
434
435static bool
436check_option(char *opt, char short_name, char *name, enum option_type type, ...)
437{
438 va_list args;
439 char *value = "";
440 int *number;
441
442 if (opt[0] != '-')
443 return FALSE;
444
445 if (opt[1] == '-') {
446 int namelen = strlen(name);
447
448 opt += 2;
449
450 if (strncmp(opt, name, namelen))
451 return FALSE;
452
453 if (opt[namelen] == '=')
454 value = opt + namelen + 1;
455
456 } else {
457 if (!short_name || opt[1] != short_name)
458 return FALSE;
459 value = opt + 2;
460 }
461
462 va_start(args, type);
463 if (type == OPT_INT) {
464 number = va_arg(args, int *);
465 if (isdigit(*value))
466 *number = atoi(value);
467 }
468 va_end(args);
469
470 return TRUE;
471}
472
b76c2afc 473/* Returns the index of log or diff command or -1 to exit. */
8855ada4 474static bool
b76c2afc
JF		 475parse_options(int argc, char *argv[])
476{
477 int i;
478
479 for (i = 1; i < argc; i++) {
480 char *opt = argv[i];
481
3621d94e
JF		 482 if (!strcmp(opt, "log") ||
483 !strcmp(opt, "diff") ||
484 !strcmp(opt, "show")) {
485 opt_request = opt[0] == 'l'
486 ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
487 break;
488 }
489
8d27b36e
JF		 490 if (opt[0] && opt[0] != '-')
491 break;
492
6b161b31 493 if (!strcmp(opt, "-l")) {
4a2909a7 494 opt_request = REQ_VIEW_LOG;
6b161b31
JF		 495 continue;
496 }
b76c2afc 497
6b161b31 498 if (!strcmp(opt, "-d")) {
4a2909a7 499 opt_request = REQ_VIEW_DIFF;
6b161b31
JF		 500 continue;
501 }
b76c2afc 502
173d76ea
JF		 503 if (!strcmp(opt, "-S")) {
504 opt_request = REQ_VIEW_STATUS;
bdcc0d6b 505 continue;
173d76ea
JF		 506 }
507
6dbf6c19 508 if (check_option(opt, 'n', "line-number", OPT_INT, &opt_num_interval)) {
6b161b31
JF		 509 opt_line_number = TRUE;
510 continue;
511 }
b76c2afc 512
6dbf6c19
JF		 513 if (check_option(opt, 'b', "tab-size", OPT_INT, &opt_tab_size)) {
514 opt_tab_size = MIN(opt_tab_size, TABSIZE);
6706b2ba
JF		 515 continue;
516 }
517
6dbf6c19 518 if (check_option(opt, 'v', "version", OPT_NONE)) {
b76c2afc 519 printf("tig version %s\n", VERSION);
8855ada4 520 return FALSE;
6b161b31 521 }
b76c2afc 522
6dbf6c19 523 if (check_option(opt, 'h', "help", OPT_NONE)) {
4b8c01a3
JF		 524 printf(usage);
525 return FALSE;
526 }
527
6908bdbd
JF		 528 if (!strcmp(opt, "--")) {
529 i++;
530 break;
531 }
03a93dbb 532
bf174187 533 die("unknown option '%s'\n\n%s", opt, usage);
b76c2afc
JF		 534 }
535
6908bdbd 536 if (!isatty(STDIN_FILENO)) {
6908bdbd
JF		 537 opt_request = REQ_VIEW_PAGER;
538 opt_pipe = stdin;
539
540 } else if (i < argc) {
541 size_t buf_size;
542
6908bdbd 543 if (opt_request == REQ_VIEW_MAIN)
8855ada4
JF		 544 /* XXX: This is vulnerable to the user overriding
545 * options required for the main view parser. */
832a47c4 546 string_copy(opt_cmd, "git log --pretty=raw");
6908bdbd
JF		 547 else
548 string_copy(opt_cmd, "git");
549 buf_size = strlen(opt_cmd);
550
551 while (buf_size < sizeof(opt_cmd) && i < argc) {
552 opt_cmd[buf_size++] = ' ';
553 buf_size = sq_quote(opt_cmd, buf_size, argv[i++]);
554 }
555
556 if (buf_size >= sizeof(opt_cmd))
557 die("command too long");
558
559 opt_cmd[buf_size] = 0;
6908bdbd
JF		 560 }
561
afdc35b3
JF		 562 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
563 opt_utf8 = FALSE;
564
8855ada4 565 return TRUE;
b76c2afc
JF		 566}
567
568
54efb62b
JF		 569/*
570 * Line-oriented content detection.
571 */
572
2e8488b4 573#define LINE_INFO \
660e09ad 574LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
a28bcc22
JF		 575LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
576LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
577LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
660e09ad
JF		 578LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
579LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
580LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
583LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
584LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
585LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
586LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
587LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
6908bdbd 588LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
8855ada4 589LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
6908bdbd
JF		 590LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
591LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
8855ada4
JF		 592LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
593LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
7b99a34c 594LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
a28bcc22
JF		 595LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
596LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
597LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
8855ada4 598LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
a28bcc22 599LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
a28bcc22 600LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
d4d8de8f 601LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
a28bcc22
JF		 602LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
603LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
604LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
6b161b31
JF		 605LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
606LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
a28bcc22
JF		 607LINE(MAIN_DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
608LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
609LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
c34d9c9f
JF		 610LINE(MAIN_DELIM, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
611LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
e15ec88e 612LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
660e09ad 613LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
e733ee54 614LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
173d76ea
JF		 615LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
616LINE(STAT_SECTION, "", COLOR_DEFAULT, COLOR_BLUE, A_BOLD), \
617LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
618LINE(STAT_STAGED, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
619LINE(STAT_UNSTAGED,"", COLOR_YELLOW, COLOR_DEFAULT, 0), \
620LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0)
660e09ad 621
78c70acd 622enum line_type {
2e8488b4
JF		 623#define LINE(type, line, fg, bg, attr) \
624 LINE_##type
625 LINE_INFO
626#undef LINE
78c70acd
JF		 627};
628
629struct line_info {
660e09ad
JF		 630 const char *name; /* Option name. */
631 int namelen; /* Size of option name. */
4685845e 632 const char *line; /* The start of line to match. */
2e8488b4
JF		 633 int linelen; /* Size of string to match. */
634 int fg, bg, attr; /* Color and text attributes for the lines. */
78c70acd
JF		 635};
636
2e8488b4 637static struct line_info line_info[] = {
78c70acd 638#define LINE(type, line, fg, bg, attr) \
660e09ad 639 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
2e8488b4
JF		 640 LINE_INFO
641#undef LINE
78c70acd
JF		 642};
643
2e8488b4
JF		 644static enum line_type
645get_line_type(char *line)
78c70acd
JF		 646{
647 int linelen = strlen(line);
a28bcc22 648 enum line_type type;
78c70acd 649
a28bcc22 650 for (type = 0; type < ARRAY_SIZE(line_info); type++)
2e8488b4 651 /* Case insensitive search matches Signed-off-by lines better. */
a28bcc22
JF		 652 if (linelen >= line_info[type].linelen &&
653 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
654 return type;
78c70acd 655
2e8488b4 656 return LINE_DEFAULT;
78c70acd
JF		 657}
658
2e8488b4 659static inline int
78c70acd
JF		 660get_line_attr(enum line_type type)
661{
2e8488b4
JF		 662 assert(type < ARRAY_SIZE(line_info));
663 return COLOR_PAIR(type) | line_info[type].attr;
78c70acd
JF		 664}
665
660e09ad
JF		 666static struct line_info *
667get_line_info(char *name, int namelen)
668{
669 enum line_type type;
660e09ad
JF		 670
671 for (type = 0; type < ARRAY_SIZE(line_info); type++)
672 if (namelen == line_info[type].namelen &&
201f5a18 673 !string_enum_compare(line_info[type].name, name, namelen))
660e09ad
JF		 674 return &line_info[type];
675
676 return NULL;
677}
678
78c70acd
JF		 679static void
680init_colors(void)
681{
82e78006
JF		 682 int default_bg = COLOR_BLACK;
683 int default_fg = COLOR_WHITE;
a28bcc22 684 enum line_type type;
78c70acd
JF		 685
686 start_color();
687
688 if (use_default_colors() != ERR) {
82e78006
JF		 689 default_bg = -1;
690 default_fg = -1;
78c70acd
JF		 691 }
692
a28bcc22
JF		 693 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
694 struct line_info *info = &line_info[type];
82e78006
JF		 695 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
696 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
78c70acd 697
a28bcc22 698 init_pair(type, fg, bg);
78c70acd
JF		 699 }
700}
701
fe7233c3
JF		 702struct line {
703 enum line_type type;
3c571d67
JF		 704
705 /* State flags */
706 unsigned int selected:1;
707
fe7233c3
JF		 708 void *data; /* User data */
709};
710
78c70acd 711
1899507c 712/*
37157fa0
JF		 713 * Keys
714 */
715
93a97d86 716struct keybinding {
37157fa0 717 int alias;
93a97d86 718 enum request request;
04e2b7b2 719 struct keybinding *next;
37157fa0
JF		 720};
721
93a97d86 722static struct keybinding default_keybindings[] = {
37157fa0
JF		 723 /* View switching */
724 { 'm', REQ_VIEW_MAIN },
725 { 'd', REQ_VIEW_DIFF },
726 { 'l', REQ_VIEW_LOG },
e733ee54 727 { 't', REQ_VIEW_TREE },
0001fc34 728 { 'f', REQ_VIEW_BLOB },
37157fa0
JF		 729 { 'p', REQ_VIEW_PAGER },
730 { 'h', REQ_VIEW_HELP },
173d76ea 731 { 'S', REQ_VIEW_STATUS },
37157fa0
JF		 732
733 /* View manipulation */
734 { 'q', REQ_VIEW_CLOSE },
735 { KEY_TAB, REQ_VIEW_NEXT },
736 { KEY_RETURN, REQ_ENTER },
737 { KEY_UP, REQ_PREVIOUS },
738 { KEY_DOWN, REQ_NEXT },
739
740 /* Cursor navigation */
741 { 'k', REQ_MOVE_UP },
742 { 'j', REQ_MOVE_DOWN },
743 { KEY_HOME, REQ_MOVE_FIRST_LINE },
744 { KEY_END, REQ_MOVE_LAST_LINE },
745 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
746 { ' ', REQ_MOVE_PAGE_DOWN },
747 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
748 { 'b', REQ_MOVE_PAGE_UP },
749 { '-', REQ_MOVE_PAGE_UP },
750
751 /* Scrolling */
752 { KEY_IC, REQ_SCROLL_LINE_UP },
753 { KEY_DC, REQ_SCROLL_LINE_DOWN },
754 { 'w', REQ_SCROLL_PAGE_UP },
755 { 's', REQ_SCROLL_PAGE_DOWN },
756
4af34daa
JF		 757 /* Searching */
758 { '/', REQ_SEARCH },
759 { '?', REQ_SEARCH_BACK },
760 { 'n', REQ_FIND_NEXT },
761 { 'N', REQ_FIND_PREV },
762
37157fa0
JF		 763 /* Misc */
764 { 'Q', REQ_QUIT },
765 { 'z', REQ_STOP_LOADING },
766 { 'v', REQ_SHOW_VERSION },
767 { 'r', REQ_SCREEN_REDRAW },
904e68d8 768 { '.', REQ_TOGGLE_LINENO },
73fb51d5 769 { 'g', REQ_TOGGLE_REV_GRAPH },
37157fa0 770 { ':', REQ_PROMPT },
ca1d71ea 771 { 'u', REQ_STATUS_UPDATE },
0cea0d43 772 { 'e', REQ_EDIT },
37157fa0 773
1d754561 774 /* Using the ncurses SIGWINCH handler. */
37157fa0
JF		 775 { KEY_RESIZE, REQ_SCREEN_RESIZE },
776};
777
04e2b7b2
JF		 778#define KEYMAP_INFO \
779 KEYMAP_(GENERIC), \
780 KEYMAP_(MAIN), \
781 KEYMAP_(DIFF), \
782 KEYMAP_(LOG), \
e733ee54
JF		 783 KEYMAP_(TREE), \
784 KEYMAP_(BLOB), \
04e2b7b2 785 KEYMAP_(PAGER), \
173d76ea
JF		 786 KEYMAP_(HELP), \
787 KEYMAP_(STATUS)
04e2b7b2
JF		 788
789enum keymap {
790#define KEYMAP_(name) KEYMAP_##name
791 KEYMAP_INFO
792#undef KEYMAP_
793};
794
795static struct int_map keymap_table[] = {
796#define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
797 KEYMAP_INFO
798#undef KEYMAP_
799};
800
801#define set_keymap(map, name) \
802 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
803
804static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
805
806static void
807add_keybinding(enum keymap keymap, enum request request, int key)
808{
809 struct keybinding *keybinding;
810
811 keybinding = calloc(1, sizeof(*keybinding));
812 if (!keybinding)
813 die("Failed to allocate keybinding");
814
815 keybinding->alias = key;
816 keybinding->request = request;
817 keybinding->next = keybindings[keymap];
818 keybindings[keymap] = keybinding;
819}
820
821/* Looks for a key binding first in the given map, then in the generic map, and
822 * lastly in the default keybindings. */
37157fa0 823static enum request
04e2b7b2 824get_keybinding(enum keymap keymap, int key)
37157fa0 825{
04e2b7b2 826 struct keybinding *kbd;
37157fa0
JF		 827 int i;
828
04e2b7b2
JF		 829 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
830 if (kbd->alias == key)
831 return kbd->request;
832
833 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
834 if (kbd->alias == key)
835 return kbd->request;
836
93a97d86
JF		 837 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
838 if (default_keybindings[i].alias == key)
839 return default_keybindings[i].request;
37157fa0
JF		 840
841 return (enum request) key;
842}
843
93a97d86 844
37157fa0
JF		 845struct key {
846 char *name;
847 int value;
848};
849
850static struct key key_table[] = {
851 { "Enter", KEY_RETURN },
852 { "Space", ' ' },
853 { "Backspace", KEY_BACKSPACE },
854 { "Tab", KEY_TAB },
855 { "Escape", KEY_ESC },
856 { "Left", KEY_LEFT },
857 { "Right", KEY_RIGHT },
858 { "Up", KEY_UP },
859 { "Down", KEY_DOWN },
860 { "Insert", KEY_IC },
861 { "Delete", KEY_DC },
74f83ee6 862 { "Hash", '#' },
37157fa0
JF		 863 { "Home", KEY_HOME },
864 { "End", KEY_END },
865 { "PageUp", KEY_PPAGE },
866 { "PageDown", KEY_NPAGE },
867 { "F1", KEY_F(1) },
868 { "F2", KEY_F(2) },
869 { "F3", KEY_F(3) },
870 { "F4", KEY_F(4) },
871 { "F5", KEY_F(5) },
872 { "F6", KEY_F(6) },
873 { "F7", KEY_F(7) },
874 { "F8", KEY_F(8) },
875 { "F9", KEY_F(9) },
876 { "F10", KEY_F(10) },
877 { "F11", KEY_F(11) },
878 { "F12", KEY_F(12) },
879};
880
04e2b7b2
JF		 881static int
882get_key_value(const char *name)
883{
884 int i;
885
886 for (i = 0; i < ARRAY_SIZE(key_table); i++)
887 if (!strcasecmp(key_table[i].name, name))
888 return key_table[i].value;
889
890 if (strlen(name) == 1 && isprint(*name))
891 return (int) *name;
892
893 return ERR;
894}
895
37157fa0
JF		 896static char *
897get_key(enum request request)
898{
899 static char buf[BUFSIZ];
900 static char key_char[] = "'X'";
d65ced0d 901 size_t pos = 0;
520094b4 902 char *sep = "";
37157fa0
JF		 903 int i;
904
905 buf[pos] = 0;
906
93a97d86
JF		 907 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
908 struct keybinding *keybinding = &default_keybindings[i];
37157fa0
JF		 909 char *seq = NULL;
910 int key;
911
93a97d86 912 if (keybinding->request != request)
37157fa0
JF		 913 continue;
914
915 for (key = 0; key < ARRAY_SIZE(key_table); key++)
93a97d86 916 if (key_table[key].value == keybinding->alias)
37157fa0
JF		 917 seq = key_table[key].name;
918
919 if (seq == NULL &&
93a97d86
JF		 920 keybinding->alias < 127 &&
921 isprint(keybinding->alias)) {
922 key_char[1] = (char) keybinding->alias;
37157fa0
JF		 923 seq = key_char;
924 }
925
926 if (!seq)
927 seq = "'?'";
928
929 if (!string_format_from(buf, &pos, "%s%s", sep, seq))
930 return "Too many keybindings!";
931 sep = ", ";
932 }
933
934 return buf;
935}
936
937
938/*
1899507c
JF		 939 * User config file handling.
940 */
941
5dc795f2
JF		 942static struct int_map color_map[] = {
943#define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
944 COLOR_MAP(DEFAULT),
945 COLOR_MAP(BLACK),
946 COLOR_MAP(BLUE),
947 COLOR_MAP(CYAN),
948 COLOR_MAP(GREEN),
949 COLOR_MAP(MAGENTA),
950 COLOR_MAP(RED),
951 COLOR_MAP(WHITE),
952 COLOR_MAP(YELLOW),
953};
954
9256ab05
JF		 955#define set_color(color, name) \
956 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
660e09ad 957
5dc795f2
JF		 958static struct int_map attr_map[] = {
959#define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
960 ATTR_MAP(NORMAL),
961 ATTR_MAP(BLINK),
962 ATTR_MAP(BOLD),
963 ATTR_MAP(DIM),
964 ATTR_MAP(REVERSE),
965 ATTR_MAP(STANDOUT),
966 ATTR_MAP(UNDERLINE),
967};
968
9256ab05
JF		 969#define set_attribute(attr, name) \
970 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
660e09ad 971
3c3801c2
JF		 972static int config_lineno;
973static bool config_errors;
974static char *config_msg;
975
5bfd96c7 976/* Wants: object fgcolor bgcolor [attr] */
660e09ad 977static int
5bfd96c7 978option_color_command(int argc, char *argv[])
660e09ad 979{
bca8fcaa
JF		 980 struct line_info *info;
981
9256ab05
JF		 982 if (argc != 3 && argc != 4) {
983 config_msg = "Wrong number of arguments given to color command";
984 return ERR;
985 }
986
987 info = get_line_info(argv[0], strlen(argv[0]));
bca8fcaa
JF		 988 if (!info) {
989 config_msg = "Unknown color name";
990 return ERR;
991 }
660e09ad 992
a3653368
JF		 993 if (set_color(&info->fg, argv[1]) == ERR ||
994 set_color(&info->bg, argv[2]) == ERR) {
bca8fcaa
JF		 995 config_msg = "Unknown color";
996 return ERR;
997 }
660e09ad 998
9256ab05 999 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
bca8fcaa
JF		 1000 config_msg = "Unknown attribute";
1001 return ERR;
660e09ad
JF		 1002 }
1003
bca8fcaa
JF		 1004 return OK;
1005}
1006
5bfd96c7
JF		 1007/* Wants: name = value */
1008static int
1009option_set_command(int argc, char *argv[])
1010{
1011 if (argc != 3) {
1012 config_msg = "Wrong number of arguments given to set command";
1013 return ERR;
1014 }
1015
1016 if (strcmp(argv[1], "=")) {
1017 config_msg = "No value assigned";
1018 return ERR;
1019 }
1020
1021 if (!strcmp(argv[0], "show-rev-graph")) {
1022 opt_rev_graph = (!strcmp(argv[2], "1") ||
1023 !strcmp(argv[2], "true") ||
1024 !strcmp(argv[2], "yes"));
1025 return OK;
1026 }
1027
1028 if (!strcmp(argv[0], "line-number-interval")) {
1029 opt_num_interval = atoi(argv[2]);
1030 return OK;
1031 }
1032
1033 if (!strcmp(argv[0], "tab-size")) {
1034 opt_tab_size = atoi(argv[2]);
1035 return OK;
1036 }
1037
cb7267ee 1038 if (!strcmp(argv[0], "commit-encoding")) {
3cc9a4d4
JF		 1039 char *arg = argv[2];
1040 int delimiter = *arg;
1041 int i;
1042
1043 switch (delimiter) {
1044 case '"':
1045 case '\'':
1046 for (arg++, i = 0; arg[i]; i++)
1047 if (arg[i] == delimiter) {
1048 arg[i] = 0;
1049 break;
1050 }
1051 default:
739e81de 1052 string_ncopy(opt_encoding, arg, strlen(arg));
3cc9a4d4
JF		 1053 return OK;
1054 }
5bfd96c7
JF		 1055 }
1056
a3653368 1057 config_msg = "Unknown variable name";
5bfd96c7
JF		 1058 return ERR;
1059}
1060
04e2b7b2
JF		 1061/* Wants: mode request key */
1062static int
1063option_bind_command(int argc, char *argv[])
1064{
1065 enum request request;
1066 int keymap;
1067 int key;
1068
1069 if (argc != 3) {
1070 config_msg = "Wrong number of arguments given to bind command";
1071 return ERR;
1072 }
1073
1074 if (set_keymap(&keymap, argv[0]) == ERR) {
1075 config_msg = "Unknown key map";
1076 return ERR;
1077 }
1078
1079 key = get_key_value(argv[1]);
1080 if (key == ERR) {
1081 config_msg = "Unknown key";
1082 return ERR;
1083 }
1084
1085 request = get_request(argv[2]);
1086 if (request == REQ_UNKNOWN) {
1087 config_msg = "Unknown request name";
1088 return ERR;
1089 }
1090
1091 add_keybinding(keymap, request, key);
1092
1093 return OK;
1094}
1095
bca8fcaa 1096static int
9256ab05 1097set_option(char *opt, char *value)
bca8fcaa 1098{
9256ab05
JF		 1099 char *argv[16];
1100 int valuelen;
1101 int argc = 0;
1102
1103 /* Tokenize */
1104 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1105 argv[argc++] = value;
1106
1107 value += valuelen;
1108 if (!*value)
1109 break;
1110
1111 *value++ = 0;
1112 while (isspace(*value))
1113 value++;
1114 }
1115
1116 if (!strcmp(opt, "color"))
5bfd96c7
JF		 1117 return option_color_command(argc, argv);
1118
1119 if (!strcmp(opt, "set"))
1120 return option_set_command(argc, argv);
bca8fcaa 1121
04e2b7b2
JF		 1122 if (!strcmp(opt, "bind"))
1123 return option_bind_command(argc, argv);
1124
a3653368 1125 config_msg = "Unknown option command";
660e09ad
JF		 1126 return ERR;
1127}
1128
1129static int
5699e0cf 1130read_option(char *opt, size_t optlen, char *value, size_t valuelen)
3c3801c2 1131{
a3653368
JF		 1132 int status = OK;
1133
3c3801c2
JF		 1134 config_lineno++;
1135 config_msg = "Internal error";
1136
a3653368
JF		 1137 /* Check for comment markers, since read_properties() will
1138 * only ensure opt and value are split at first " \t". */
74f83ee6 1139 optlen = strcspn(opt, "#");
a3653368 1140 if (optlen == 0)
3c3801c2
JF		 1141 return OK;
1142
a3653368
JF		 1143 if (opt[optlen] != 0) {
1144 config_msg = "No option value";
1145 status = ERR;
1146
1147 } else {
1148 /* Look for comment endings in the value. */
5699e0cf 1149 size_t len = strcspn(value, "#");
a3653368
JF		 1150
1151 if (len < valuelen) {
1152 valuelen = len;
1153 value[valuelen] = 0;
1154 }
1155
1156 status = set_option(opt, value);
3c3801c2
JF		 1157 }
1158
a3653368
JF		 1159 if (status == ERR) {
1160 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
07c3971e 1161 config_lineno, (int) optlen, opt, config_msg);
3c3801c2
JF		 1162 config_errors = TRUE;
1163 }
1164
1165 /* Always keep going if errors are encountered. */
1166 return OK;
1167}
1168
1169static int
660e09ad
JF		 1170load_options(void)
1171{
1172 char *home = getenv("HOME");
17482b11 1173 char buf[SIZEOF_STR];
660e09ad
JF		 1174 FILE *file;
1175
3c3801c2
JF		 1176 config_lineno = 0;
1177 config_errors = FALSE;
1178
cc2d1364 1179 if (!home || !string_format(buf, "%s/.tigrc", home))
660e09ad
JF		 1180 return ERR;
1181
1182 /* It's ok that the file doesn't exist. */
1183 file = fopen(buf, "r");
1184 if (!file)
1185 return OK;
1186
3c3801c2
JF		 1187 if (read_properties(file, " \t", read_option) == ERR ||
1188 config_errors == TRUE)
1189 fprintf(stderr, "Errors while loading %s.\n", buf);
1190
1191 return OK;
660e09ad
JF		 1192}
1193
1194
d839253b 1195/*
468876c9 1196 * The viewer
d839253b 1197 */
c2124ccd
JF		 1198
1199struct view;
fe7233c3 1200struct view_ops;
c2124ccd
JF		 1201
1202/* The display array of active views and the index of the current view. */
1203static struct view *display[2];
1204static unsigned int current_view;
1205
ab4af23e
JF		 1206/* Reading from the prompt? */
1207static bool input_mode = FALSE;
1208
33c4f9ea 1209#define foreach_displayed_view(view, i) \
c2124ccd
JF		 1210 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1211
9f41488f 1212#define displayed_views() (display[1] != NULL ? 2 : 1)
c2124ccd 1213
d839253b 1214/* Current head and commit ID */
e733ee54 1215static char ref_blob[SIZEOF_REF] = "";
c2124ccd
JF		 1216static char ref_commit[SIZEOF_REF] = "HEAD";
1217static char ref_head[SIZEOF_REF] = "HEAD";
1218
b801d8b2 1219struct view {
03a93dbb 1220 const char *name; /* View name */
4685845e
TH		 1221 const char *cmd_fmt; /* Default command line format */
1222 const char *cmd_env; /* Command line set via environment */
e733ee54 1223 const char *id; /* Points to either of ref_{head,commit,blob} */
6b161b31 1224
fe7233c3 1225 struct view_ops *ops; /* View operations */
22f66b0a 1226
04e2b7b2
JF		 1227 enum keymap keymap; /* What keymap does this view have */
1228
17482b11 1229 char cmd[SIZEOF_STR]; /* Command buffer */
49f2b43f
JF		 1230 char ref[SIZEOF_REF]; /* Hovered commit reference */
1231 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
2e8488b4 1232
8855ada4
JF		 1233 int height, width; /* The width and height of the main window */
1234 WINDOW *win; /* The main window */
1235 WINDOW *title; /* The title window living below the main window */
b801d8b2
JF		 1236
1237 /* Navigation */
1238 unsigned long offset; /* Offset of the window top */
1239 unsigned long lineno; /* Current line number */
1240
4af34daa
JF		 1241 /* Searching */
1242 char grep[SIZEOF_STR]; /* Search string */
b77b2cb8 1243 regex_t *regex; /* Pre-compiled regex */
4af34daa 1244
f6da0b66
JF		 1245 /* If non-NULL, points to the view that opened this view. If this view
1246 * is closed tig will switch back to the parent view. */
1247 struct view *parent;
1248
b801d8b2
JF		 1249 /* Buffering */
1250 unsigned long lines; /* Total number of lines */
fe7233c3 1251 struct line *line; /* Line index */
e2c01617 1252 unsigned long line_size;/* Total number of allocated lines */
8855ada4 1253 unsigned int digits; /* Number of digits in the lines member. */
b801d8b2
JF		 1254
1255 /* Loading */
1256 FILE *pipe;
2e8488b4 1257 time_t start_time;
b801d8b2
JF		 1258};
1259
fe7233c3
JF		 1260struct view_ops {
1261 /* What type of content being displayed. Used in the title bar. */
1262 const char *type;
f098944b
JF		 1263 /* Open and reads in all view content. */
1264 bool (*open)(struct view *view);
fe7233c3 1265 /* Read one line; updates view->line. */
701e4f5d 1266 bool (*read)(struct view *view, char *data);
f098944b
JF		 1267 /* Draw one line; @lineno must be < view->height. */
1268 bool (*draw)(struct view *view, struct line *line, unsigned int lineno, bool selected);
586c423d
JF		 1269 /* Depending on view handle a special requests. */
1270 enum request (*request)(struct view *view, enum request request, struct line *line);
4af34daa
JF		 1271 /* Search for regex in a line. */
1272 bool (*grep)(struct view *view, struct line *line);
d720de4b
JF		 1273 /* Select line */
1274 void (*select)(struct view *view, struct line *line);
fe7233c3
JF		 1275};
1276
6b161b31
JF		 1277static struct view_ops pager_ops;
1278static struct view_ops main_ops;
e733ee54
JF		 1279static struct view_ops tree_ops;
1280static struct view_ops blob_ops;
f098944b 1281static struct view_ops help_ops;
173d76ea 1282static struct view_ops status_ops;
a28bcc22 1283
04e2b7b2
JF		 1284#define VIEW_STR(name, cmd, env, ref, ops, map) \
1285 { name, cmd, #env, ref, ops, map}
1ba2ae4b 1286
95d7ddcd 1287#define VIEW_(id, name, ops, ref) \
04e2b7b2 1288 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id)
1ba2ae4b 1289
c2124ccd 1290
b801d8b2 1291static struct view views[] = {
173d76ea
JF		 1292 VIEW_(MAIN, "main", &main_ops, ref_head),
1293 VIEW_(DIFF, "diff", &pager_ops, ref_commit),
1294 VIEW_(LOG, "log", &pager_ops, ref_head),
1295 VIEW_(TREE, "tree", &tree_ops, ref_commit),
1296 VIEW_(BLOB, "blob", &blob_ops, ref_blob),
b64c5b75
JF		 1297 VIEW_(HELP, "help", &help_ops, ""),
1298 VIEW_(PAGER, "pager", &pager_ops, "stdin"),
173d76ea 1299 VIEW_(STATUS, "status", &status_ops, ""),
b801d8b2
JF		 1300};
1301
a28bcc22
JF		 1302#define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1303
699ae55b
JF		 1304#define foreach_view(view, i) \
1305 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1306
1307#define view_is_displayed(view) \
1308 (view == display[0] || view == display[1])
4c6fabc2 1309
fe7233c3
JF		 1310static bool
1311draw_view_line(struct view *view, unsigned int lineno)
1312{
d720de4b 1313 struct line *line;
5dcf8064 1314 bool selected = (view->offset + lineno == view->lineno);
4887d44e 1315 bool draw_ok;
d720de4b 1316
699ae55b
JF		 1317 assert(view_is_displayed(view));
1318
fe7233c3
JF		 1319 if (view->offset + lineno >= view->lines)
1320 return FALSE;
1321
d720de4b
JF		 1322 line = &view->line[view->offset + lineno];
1323
3c571d67
JF		 1324 if (selected) {
1325 line->selected = TRUE;
d720de4b 1326 view->ops->select(view, line);
3c571d67
JF		 1327 } else if (line->selected) {
1328 line->selected = FALSE;
1329 wmove(view->win, lineno, 0);
1330 wclrtoeol(view->win);
1331 }
d720de4b 1332
4887d44e
JF		 1333 scrollok(view->win, FALSE);
1334 draw_ok = view->ops->draw(view, line, lineno, selected);
1335 scrollok(view->win, TRUE);
1336
1337 return draw_ok;
fe7233c3
JF		 1338}
1339
b801d8b2 1340static void
82e78006 1341redraw_view_from(struct view *view, int lineno)
b801d8b2 1342{
82e78006 1343 assert(0 <= lineno && lineno < view->height);
b801d8b2 1344
82e78006 1345 for (; lineno < view->height; lineno++) {
fe7233c3 1346 if (!draw_view_line(view, lineno))
fd85fef1 1347 break;
b801d8b2
JF		 1348 }
1349
1350 redrawwin(view->win);
ab4af23e
JF		 1351 if (input_mode)
1352 wnoutrefresh(view->win);
1353 else
1354 wrefresh(view->win);
b801d8b2
JF		 1355}
1356
b76c2afc 1357static void
82e78006
JF		 1358redraw_view(struct view *view)
1359{
1360 wclear(view->win);
1361 redraw_view_from(view, 0);
1362}
1363
c2124ccd 1364
6b161b31 1365static void
81030ec8
JF		 1366update_view_title(struct view *view)
1367{
3c112a88 1368 char buf[SIZEOF_STR];
71d1c7db
JF		 1369 char state[SIZEOF_STR];
1370 size_t bufpos = 0, statelen = 0;
81030ec8 1371
3c112a88 1372 assert(view_is_displayed(view));
81030ec8 1373
249016a6 1374 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
6d9c07af 1375 unsigned int view_lines = view->offset + view->height;
c19f8017 1376 unsigned int lines = view->lines
6d9c07af 1377 ? MIN(view_lines, view->lines) * 100 / view->lines
c19f8017
JF		 1378 : 0;
1379
71d1c7db 1380 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
3c112a88
JF		 1381 view->ops->type,
1382 view->lineno + 1,
1383 view->lines,
1384 lines);
81030ec8 1385
5becf244
JF		 1386 if (view->pipe) {
1387 time_t secs = time(NULL) - view->start_time;
f97f4012 1388
5becf244
JF		 1389 /* Three git seconds are a long time ... */
1390 if (secs > 2)
71d1c7db 1391 string_format_from(state, &statelen, " %lds", secs);
5becf244 1392 }
81030ec8
JF		 1393 }
1394
71d1c7db
JF		 1395 string_format_from(buf, &bufpos, "[%s]", view->name);
1396 if (*view->ref && bufpos < view->width) {
1397 size_t refsize = strlen(view->ref);
1398 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1399
1400 if (minsize < view->width)
1401 refsize = view->width - minsize + 7;
d1858deb 1402 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
71d1c7db 1403 }
f97f4012 1404
71d1c7db
JF		 1405 if (statelen && bufpos < view->width) {
1406 string_format_from(buf, &bufpos, " %s", state);
f97f4012
JF		 1407 }
1408
3c112a88
JF		 1409 if (view == display[current_view])
1410 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1411 else
1412 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1413
3c112a88 1414 mvwaddnstr(view->title, 0, 0, buf, bufpos);
390a8262 1415 wclrtoeol(view->title);
976447f8 1416 wmove(view->title, 0, view->width - 1);
ab4af23e
JF		 1417
1418 if (input_mode)
1419 wnoutrefresh(view->title);
1420 else
1421 wrefresh(view->title);
81030ec8
JF		 1422}
1423
1424static void
6b161b31 1425resize_display(void)
b76c2afc 1426{
03a93dbb 1427 int offset, i;
6b161b31
JF		 1428 struct view *base = display[0];
1429 struct view *view = display[1] ? display[1] : display[0];
b76c2afc 1430
6b161b31 1431 /* Setup window dimensions */
b76c2afc 1432
03a93dbb 1433 getmaxyx(stdscr, base->height, base->width);
b76c2afc 1434
6b161b31 1435 /* Make room for the status window. */
03a93dbb 1436 base->height -= 1;
6b161b31
JF		 1437
1438 if (view != base) {
03a93dbb
JF		 1439 /* Horizontal split. */
1440 view->width = base->width;
6b161b31
JF		 1441 view->height = SCALE_SPLIT_VIEW(base->height);
1442 base->height -= view->height;
1443
1444 /* Make room for the title bar. */
1445 view->height -= 1;
1446 }
1447
1448 /* Make room for the title bar. */
1449 base->height -= 1;
1450
1451 offset = 0;
1452
33c4f9ea 1453 foreach_displayed_view (view, i) {
b76c2afc 1454 if (!view->win) {
c19f8017 1455 view->win = newwin(view->height, 0, offset, 0);
6b161b31
JF		 1456 if (!view->win)
1457 die("Failed to create %s view", view->name);
1458
1459 scrollok(view->win, TRUE);
1460
1461 view->title = newwin(1, 0, offset + view->height, 0);
1462 if (!view->title)
1463 die("Failed to create title window");
1464
1465 } else {
c19f8017 1466 wresize(view->win, view->height, view->width);
6b161b31
JF		 1467 mvwin(view->win, offset, 0);
1468 mvwin(view->title, offset + view->height, 0);
a28bcc22 1469 }
a28bcc22 1470
6b161b31 1471 offset += view->height + 1;
b76c2afc 1472 }
6b161b31 1473}
b76c2afc 1474
6b161b31 1475static void
20bb5e18
JF		 1476redraw_display(void)
1477{
1478 struct view *view;
1479 int i;
1480
33c4f9ea 1481 foreach_displayed_view (view, i) {
20bb5e18
JF		 1482 redraw_view(view);
1483 update_view_title(view);
1484 }
1485}
1486
85af6284 1487static void
2bee3bde 1488update_display_cursor(struct view *view)
85af6284 1489{
85af6284
JF		 1490 /* Move the cursor to the right-most column of the cursor line.
1491 *
1492 * XXX: This could turn out to be a bit expensive, but it ensures that
1493 * the cursor does not jump around. */
1494 if (view->lines) {
1495 wmove(view->win, view->lineno - view->offset, view->width - 1);
1496 wrefresh(view->win);
1497 }
1498}
20bb5e18 1499
2e8488b4
JF		 1500/*
1501 * Navigation
1502 */
1503
4a2909a7 1504/* Scrolling backend */
b801d8b2 1505static void
8c317212 1506do_scroll_view(struct view *view, int lines)
b801d8b2 1507{
a0087dd5
JF		 1508 bool redraw_current_line = FALSE;
1509
fd85fef1
JF		 1510 /* The rendering expects the new offset. */
1511 view->offset += lines;
1512
1513 assert(0 <= view->offset && view->offset < view->lines);
1514 assert(lines);
b801d8b2 1515
a0087dd5
JF		 1516 /* Move current line into the view. */
1517 if (view->lineno < view->offset) {
1518 view->lineno = view->offset;
1519 redraw_current_line = TRUE;
1520 } else if (view->lineno >= view->offset + view->height) {
1521 view->lineno = view->offset + view->height - 1;
1522 redraw_current_line = TRUE;
1523 }
1524
1525 assert(view->offset <= view->lineno && view->lineno < view->lines);
1526
82e78006 1527 /* Redraw the whole screen if scrolling is pointless. */
4c6fabc2 1528 if (view->height < ABS(lines)) {
b76c2afc
JF		 1529 redraw_view(view);
1530
1531 } else {
22f66b0a 1532 int line = lines > 0 ? view->height - lines : 0;
82e78006 1533 int end = line + ABS(lines);
fd85fef1
JF		 1534
1535 wscrl(view->win, lines);
1536
22f66b0a 1537 for (; line < end; line++) {
fe7233c3 1538 if (!draw_view_line(view, line))
fd85fef1
JF		 1539 break;
1540 }
fd85fef1 1541
a0087dd5
JF		 1542 if (redraw_current_line)
1543 draw_view_line(view, view->lineno - view->offset);
fd85fef1
JF		 1544 }
1545
fd85fef1
JF		 1546 redrawwin(view->win);
1547 wrefresh(view->win);
9d3f5834 1548 report("");
fd85fef1 1549}
78c70acd 1550
4a2909a7 1551/* Scroll frontend */
fd85fef1 1552static void
6b161b31 1553scroll_view(struct view *view, enum request request)
fd85fef1
JF		 1554{
1555 int lines = 1;
b801d8b2 1556
8c317212
JF		 1557 assert(view_is_displayed(view));
1558
b801d8b2 1559 switch (request) {
4a2909a7 1560 case REQ_SCROLL_PAGE_DOWN:
fd85fef1 1561 lines = view->height;
4a2909a7 1562 case REQ_SCROLL_LINE_DOWN:
b801d8b2 1563 if (view->offset + lines > view->lines)
bde3653a 1564 lines = view->lines - view->offset;
b801d8b2 1565
fd85fef1 1566 if (lines == 0 || view->offset + view->height >= view->lines) {
eb98559e 1567 report("Cannot scroll beyond the last line");
b801d8b2
JF		 1568 return;
1569 }
1570 break;
1571
4a2909a7 1572 case REQ_SCROLL_PAGE_UP:
fd85fef1 1573 lines = view->height;
4a2909a7 1574 case REQ_SCROLL_LINE_UP:
b801d8b2
JF		 1575 if (lines > view->offset)
1576 lines = view->offset;
1577
1578 if (lines == 0) {
eb98559e 1579 report("Cannot scroll beyond the first line");
b801d8b2
JF		 1580 return;
1581 }
1582
fd85fef1 1583 lines = -lines;
b801d8b2 1584 break;
03a93dbb 1585
6b161b31
JF		 1586 default:
1587 die("request %d not handled in switch", request);
b801d8b2
JF		 1588 }
1589
8c317212 1590 do_scroll_view(view, lines);
fd85fef1 1591}
b801d8b2 1592
4a2909a7 1593/* Cursor moving */
fd85fef1 1594static void
8522ecc7 1595move_view(struct view *view, enum request request)
fd85fef1 1596{
dfaa6c81 1597 int scroll_steps = 0;
fd85fef1 1598 int steps;
b801d8b2 1599
fd85fef1 1600 switch (request) {
4a2909a7 1601 case REQ_MOVE_FIRST_LINE:
78c70acd
JF		 1602 steps = -view->lineno;
1603 break;
1604
4a2909a7 1605 case REQ_MOVE_LAST_LINE:
78c70acd
JF		 1606 steps = view->lines - view->lineno - 1;
1607 break;
1608
4a2909a7 1609 case REQ_MOVE_PAGE_UP:
78c70acd
JF		 1610 steps = view->height > view->lineno
1611 ? -view->lineno : -view->height;
1612 break;
1613
4a2909a7 1614 case REQ_MOVE_PAGE_DOWN:
78c70acd
JF		 1615 steps = view->lineno + view->height >= view->lines
1616 ? view->lines - view->lineno - 1 : view->height;
1617 break;
1618
4a2909a7 1619 case REQ_MOVE_UP:
fd85fef1
JF		 1620 steps = -1;
1621 break;
b801d8b2 1622
4a2909a7 1623 case REQ_MOVE_DOWN:
fd85fef1
JF		 1624 steps = 1;
1625 break;
6b161b31
JF		 1626
1627 default:
1628 die("request %d not handled in switch", request);
78c70acd 1629 }
b801d8b2 1630
4c6fabc2 1631 if (steps <= 0 && view->lineno == 0) {
eb98559e 1632 report("Cannot move beyond the first line");
78c70acd 1633 return;
b801d8b2 1634
6908bdbd 1635 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
eb98559e 1636 report("Cannot move beyond the last line");
78c70acd 1637 return;
fd85fef1
JF		 1638 }
1639
4c6fabc2 1640 /* Move the current line */
fd85fef1 1641 view->lineno += steps;
4c6fabc2
JF		 1642 assert(0 <= view->lineno && view->lineno < view->lines);
1643
4c6fabc2 1644 /* Check whether the view needs to be scrolled */
fd85fef1
JF		 1645 if (view->lineno < view->offset ||
1646 view->lineno >= view->offset + view->height) {
dfaa6c81 1647 scroll_steps = steps;
fd85fef1 1648 if (steps < 0 && -steps > view->offset) {
dfaa6c81 1649 scroll_steps = -view->offset;
b76c2afc
JF		 1650
1651 } else if (steps > 0) {
1652 if (view->lineno == view->lines - 1 &&
1653 view->lines > view->height) {
dfaa6c81
JF		 1654 scroll_steps = view->lines - view->offset - 1;
1655 if (scroll_steps >= view->height)
1656 scroll_steps -= view->height - 1;
b76c2afc 1657 }
b801d8b2 1658 }
8522ecc7
JF		 1659 }
1660
1661 if (!view_is_displayed(view)) {
a3965365
JF		 1662 view->offset += scroll_steps;
1663 assert(0 <= view->offset && view->offset < view->lines);
8522ecc7
JF		 1664 view->ops->select(view, &view->line[view->lineno]);
1665 return;
1666 }
1667
1668 /* Repaint the old "current" line if we be scrolling */
1669 if (ABS(steps) < view->height)
1670 draw_view_line(view, view->lineno - steps - view->offset);
1671
dfaa6c81
JF		 1672 if (scroll_steps) {
1673 do_scroll_view(view, scroll_steps);
fd85fef1 1674 return;
b801d8b2
JF		 1675 }
1676
4c6fabc2 1677 /* Draw the current line */
fe7233c3 1678 draw_view_line(view, view->lineno - view->offset);
fd85fef1 1679
b801d8b2
JF		 1680 redrawwin(view->win);
1681 wrefresh(view->win);
9d3f5834 1682 report("");
b801d8b2
JF		 1683}
1684
b801d8b2 1685
2e8488b4 1686/*
4af34daa
JF		 1687 * Searching
1688 */
1689
c02d8fce 1690static void search_view(struct view *view, enum request request);
4af34daa
JF		 1691
1692static bool
1693find_next_line(struct view *view, unsigned long lineno, struct line *line)
1694{
699ae55b
JF		 1695 assert(view_is_displayed(view));
1696
4af34daa
JF		 1697 if (!view->ops->grep(view, line))
1698 return FALSE;
1699
1700 if (lineno - view->offset >= view->height) {
1701 view->offset = lineno;
1702 view->lineno = lineno;
1703 redraw_view(view);
1704
1705 } else {
1706 unsigned long old_lineno = view->lineno - view->offset;
1707
1708 view->lineno = lineno;
4af34daa
JF		 1709 draw_view_line(view, old_lineno);
1710
1711 draw_view_line(view, view->lineno - view->offset);
1712 redrawwin(view->win);
1713 wrefresh(view->win);
1714 }
1715
1716 report("Line %ld matches '%s'", lineno + 1, view->grep);
1717 return TRUE;
1718}
1719
1720static void
1721find_next(struct view *view, enum request request)
1722{
1723 unsigned long lineno = view->lineno;
1724 int direction;
1725
1726 if (!*view->grep) {
1727 if (!*opt_search)
1728 report("No previous search");
1729 else
c02d8fce 1730 search_view(view, request);
4af34daa
JF		 1731 return;
1732 }
1733
1734 switch (request) {
1735 case REQ_SEARCH:
1736 case REQ_FIND_NEXT:
1737 direction = 1;
1738 break;
1739
1740 case REQ_SEARCH_BACK:
1741 case REQ_FIND_PREV:
1742 direction = -1;
1743 break;
1744
1745 default:
1746 return;
1747 }
1748
1749 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
1750 lineno += direction;
1751
1752 /* Note, lineno is unsigned long so will wrap around in which case it
1753 * will become bigger than view->lines. */
1754 for (; lineno < view->lines; lineno += direction) {
1755 struct line *line = &view->line[lineno];
1756
1757 if (find_next_line(view, lineno, line))
1758 return;
1759 }
1760
1761 report("No match found for '%s'", view->grep);
1762}
1763
1764static void
c02d8fce 1765search_view(struct view *view, enum request request)
4af34daa
JF		 1766{
1767 int regex_err;
1768
b77b2cb8
JF		 1769 if (view->regex) {
1770 regfree(view->regex);
4af34daa 1771 *view->grep = 0;
b77b2cb8
JF		 1772 } else {
1773 view->regex = calloc(1, sizeof(*view->regex));
1774 if (!view->regex)
1775 return;
4af34daa
JF		 1776 }
1777
c02d8fce 1778 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
4af34daa
JF		 1779 if (regex_err != 0) {
1780 char buf[SIZEOF_STR] = "unknown error";
1781
b77b2cb8 1782 regerror(regex_err, view->regex, buf, sizeof(buf));
e9cacd58 1783 report("Search failed: %s", buf);
4af34daa
JF		 1784 return;
1785 }
1786
c02d8fce 1787 string_copy(view->grep, opt_search);
4af34daa
JF		 1788
1789 find_next(view, request);
1790}
1791
1792/*
2e8488b4
JF		 1793 * Incremental updating
1794 */
b801d8b2 1795
199d1288
JF		 1796static void
1797end_update(struct view *view)
1798{
1799 if (!view->pipe)
1800 return;
1801 set_nonblocking_input(FALSE);
1802 if (view->pipe == stdin)
1803 fclose(view->pipe);
1804 else
1805 pclose(view->pipe);
1806 view->pipe = NULL;
1807}
1808
03a93dbb 1809static bool
b801d8b2
JF		 1810begin_update(struct view *view)
1811{
199d1288
JF		 1812 if (view->pipe)
1813 end_update(view);
1814
03a93dbb
JF		 1815 if (opt_cmd[0]) {
1816 string_copy(view->cmd, opt_cmd);
1817 opt_cmd[0] = 0;
035ba11f
JF		 1818 /* When running random commands, initially show the
1819 * command in the title. However, it maybe later be
1820 * overwritten if a commit line is selected. */
1821 string_copy(view->ref, view->cmd);
e733ee54
JF		 1822
1823 } else if (view == VIEW(REQ_VIEW_TREE)) {
1824 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
f0f114ac 1825 char path[SIZEOF_STR];
e733ee54
JF		 1826
1827 if (strcmp(view->vid, view->id))
f0f114ac
JF		 1828 opt_path[0] = path[0] = 0;
1829 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
1830 return FALSE;
e733ee54 1831
739e81de 1832 if (!string_format(view->cmd, format, view->id, path))
e733ee54
JF		 1833 return FALSE;
1834
03a93dbb 1835 } else {
4685845e 1836 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
739e81de 1837 const char *id = view->id;
1ba2ae4b 1838
cc2d1364 1839 if (!string_format(view->cmd, format, id, id, id, id, id))
03a93dbb 1840 return FALSE;
035ba11f
JF		 1841
1842 /* Put the current ref_* value to the view title ref
1843 * member. This is needed by the blob view. Most other
1844 * views sets it automatically after loading because the
1845 * first line is a commit line. */
739e81de 1846 string_copy_rev(view->ref, view->id);
03a93dbb 1847 }
b801d8b2 1848
6908bdbd
JF		 1849 /* Special case for the pager view. */
1850 if (opt_pipe) {
1851 view->pipe = opt_pipe;
1852 opt_pipe = NULL;
1853 } else {
1854 view->pipe = popen(view->cmd, "r");
1855 }
1856
2e8488b4
JF		 1857 if (!view->pipe)
1858 return FALSE;
b801d8b2 1859
6b161b31 1860 set_nonblocking_input(TRUE);
b801d8b2
JF		 1861
1862 view->offset = 0;
1863 view->lines = 0;
1864 view->lineno = 0;
739e81de 1865 string_copy_rev(view->vid, view->id);
b801d8b2 1866
2e8488b4
JF		 1867 if (view->line) {
1868 int i;
1869
1870 for (i = 0; i < view->lines; i++)
fe7233c3
JF		 1871 if (view->line[i].data)
1872 free(view->line[i].data);
2e8488b4
JF		 1873
1874 free(view->line);
1875 view->line = NULL;
1876 }
1877
1878 view->start_time = time(NULL);
1879
b801d8b2
JF		 1880 return TRUE;
1881}
1882
e2c01617
JF		 1883static struct line *
1884realloc_lines(struct view *view, size_t line_size)
1885{
1886 struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
1887
1888 if (!tmp)
1889 return NULL;
1890
1891 view->line = tmp;
1892 view->line_size = line_size;
1893 return view->line;
1894}
1895
03a93dbb 1896static bool
b801d8b2
JF		 1897update_view(struct view *view)
1898{
6b68fd24
JF		 1899 char in_buffer[BUFSIZ];
1900 char out_buffer[BUFSIZ * 2];
b801d8b2 1901 char *line;
82e78006
JF		 1902 /* The number of lines to read. If too low it will cause too much
1903 * redrawing (and possible flickering), if too high responsiveness
1904 * will suffer. */
8855ada4 1905 unsigned long lines = view->height;
82e78006 1906 int redraw_from = -1;
b801d8b2
JF		 1907
1908 if (!view->pipe)
1909 return TRUE;
1910
82e78006
JF		 1911 /* Only redraw if lines are visible. */
1912 if (view->offset + view->height >= view->lines)
1913 redraw_from = view->lines - view->offset;
b801d8b2 1914
699ae55b 1915 /* FIXME: This is probably not perfect for backgrounded views. */
e2c01617 1916 if (!realloc_lines(view, view->lines + lines))
b801d8b2
JF		 1917 goto alloc_error;
1918
6b68fd24
JF		 1919 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
1920 size_t linelen = strlen(line);
b801d8b2 1921
b801d8b2
JF		 1922 if (linelen)
1923 line[linelen - 1] = 0;
1924
6b68fd24
JF		 1925 if (opt_iconv != ICONV_NONE) {
1926 char *inbuf = line;
1927 size_t inlen = linelen;
1928
1929 char *outbuf = out_buffer;
1930 size_t outlen = sizeof(out_buffer);
1931
1932 size_t ret;
1933
7361622d 1934 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
6b68fd24
JF		 1935 if (ret != (size_t) -1) {
1936 line = out_buffer;
1937 linelen = strlen(out_buffer);
1938 }
1939 }
1940
701e4f5d 1941 if (!view->ops->read(view, line))
b801d8b2 1942 goto alloc_error;
fd85fef1
JF		 1943
1944 if (lines-- == 1)
1945 break;
b801d8b2
JF		 1946 }
1947
8855ada4
JF		 1948 {
1949 int digits;
1950
1951 lines = view->lines;
1952 for (digits = 0; lines; digits++)
1953 lines /= 10;
1954
1955 /* Keep the displayed view in sync with line number scaling. */
1956 if (digits != view->digits) {
1957 view->digits = digits;
1958 redraw_from = 0;
1959 }
1960 }
1961
699ae55b
JF		 1962 if (!view_is_displayed(view))
1963 goto check_pipe;
1964
e733ee54
JF		 1965 if (view == VIEW(REQ_VIEW_TREE)) {
1966 /* Clear the view and redraw everything since the tree sorting
1967 * might have rearranged things. */
1968 redraw_view(view);
1969
1970 } else if (redraw_from >= 0) {
82e78006 1971 /* If this is an incremental update, redraw the previous line
a28bcc22
JF		 1972 * since for commits some members could have changed when
1973 * loading the main view. */
82e78006
JF		 1974 if (redraw_from > 0)
1975 redraw_from--;
1976
9eded379
JF		 1977 /* Since revision graph visualization requires knowledge
1978 * about the parent commit, it causes a further one-off
1979 * needed to be redrawn for incremental updates. */
1980 if (redraw_from > 0 && opt_rev_graph)
1981 redraw_from--;
1982
82e78006
JF		 1983 /* Incrementally draw avoids flickering. */
1984 redraw_view_from(view, redraw_from);
4c6fabc2 1985 }
b801d8b2 1986
eb98559e
JF		 1987 /* Update the title _after_ the redraw so that if the redraw picks up a
1988 * commit reference in view->ref it'll be available here. */
1989 update_view_title(view);
1990
699ae55b 1991check_pipe:
b801d8b2 1992 if (ferror(view->pipe)) {
03a93dbb 1993 report("Failed to read: %s", strerror(errno));
b801d8b2
JF		 1994 goto end;
1995
1996 } else if (feof(view->pipe)) {
f97f4012 1997 report("");
b801d8b2
JF		 1998 goto end;
1999 }
2000
2001 return TRUE;
2002
2003alloc_error:
2e8488b4 2004 report("Allocation failure");
b801d8b2
JF		 2005
2006end:
be04d936 2007 view->ops->read(view, NULL);
b801d8b2
JF		 2008 end_update(view);
2009 return FALSE;
2010}
2011
0a0d8910 2012static struct line *
e314c36d 2013add_line_data(struct view *view, void *data, enum line_type type)
0a0d8910 2014{
e314c36d 2015 struct line *line = &view->line[view->lines++];
0a0d8910 2016
e314c36d 2017 memset(line, 0, sizeof(*line));
0a0d8910 2018 line->type = type;
e314c36d 2019 line->data = data;
0a0d8910
JF		 2020
2021 return line;
2022}
2023
e314c36d
JF		 2024static struct line *
2025add_line_text(struct view *view, char *data, enum line_type type)
2026{
2027 if (data)
2028 data = strdup(data);
2029
2030 return data ? add_line_data(view, data, type) : NULL;
2031}
2032
79d445ca 2033
e10154d5
JF		 2034/*
2035 * View opening
2036 */
2037
49f2b43f
JF		 2038enum open_flags {
2039 OPEN_DEFAULT = 0, /* Use default view switching. */
2040 OPEN_SPLIT = 1, /* Split current view. */
2041 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2042 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2043};
2044
6b161b31 2045static void
49f2b43f 2046open_view(struct view *prev, enum request request, enum open_flags flags)
b801d8b2 2047{
49f2b43f
JF		 2048 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2049 bool split = !!(flags & OPEN_SPLIT);
2050 bool reload = !!(flags & OPEN_RELOAD);
a28bcc22 2051 struct view *view = VIEW(request);
9f41488f 2052 int nviews = displayed_views();
6e950a52 2053 struct view *base_view = display[0];
b801d8b2 2054
49f2b43f 2055 if (view == prev && nviews == 1 && !reload) {
6b161b31
JF		 2056 report("Already in %s view", view->name);
2057 return;
2058 }
b801d8b2 2059
f098944b
JF		 2060 if (view->ops->open) {
2061 if (!view->ops->open(view)) {
2062 report("Failed to load %s view", view->name);
2063 return;
2064 }
2509b112
JF		 2065
2066 } else if ((reload || strcmp(view->vid, view->id)) &&
2067 !begin_update(view)) {
6b161b31
JF		 2068 report("Failed to load %s view", view->name);
2069 return;
2070 }
a28bcc22 2071
6b161b31 2072 if (split) {
8d741c06 2073 display[1] = view;
6b161b31 2074 if (!backgrounded)
8d741c06 2075 current_view = 1;
6b161b31
JF		 2076 } else {
2077 /* Maximize the current view. */
2078 memset(display, 0, sizeof(display));
2079 current_view = 0;
2080 display[current_view] = view;
a28bcc22 2081 }
b801d8b2 2082
6e950a52
JF		 2083 /* Resize the view when switching between split- and full-screen,
2084 * or when switching between two different full-screen views. */
2085 if (nviews != displayed_views() ||
2086 (nviews == 1 && base_view != display[0]))
a006db63 2087 resize_display();
b801d8b2 2088
a8891802 2089 if (split && prev->lineno - prev->offset >= prev->height) {
03a93dbb 2090 /* Take the title line into account. */
eb98559e 2091 int lines = prev->lineno - prev->offset - prev->height + 1;
03a93dbb
JF		 2092
2093 /* Scroll the view that was split if the current line is
2094 * outside the new limited view. */
8c317212 2095 do_scroll_view(prev, lines);
03a93dbb
JF		 2096 }
2097
6b161b31 2098 if (prev && view != prev) {
9b995f0c 2099 if (split && !backgrounded) {
f0b3ab80
JF		 2100 /* "Blur" the previous view. */
2101 update_view_title(prev);
9f396969 2102 }
f0b3ab80 2103
f6da0b66 2104 view->parent = prev;
b801d8b2
JF		 2105 }
2106
9f396969 2107 if (view->pipe && view->lines == 0) {
03a93dbb
JF		 2108 /* Clear the old view and let the incremental updating refill
2109 * the screen. */
2110 wclear(view->win);
f97f4012 2111 report("");
03a93dbb
JF		 2112 } else {
2113 redraw_view(view);
24b5b3e0 2114 report("");
03a93dbb 2115 }
6706b2ba
JF		 2116
2117 /* If the view is backgrounded the above calls to report()
2118 * won't redraw the view title. */
2119 if (backgrounded)
2120 update_view_title(view);
b801d8b2
JF		 2121}
2122
0cea0d43
JF		 2123static void
2124open_editor(struct view *view, char *file)
2125{
2126 char cmd[SIZEOF_STR];
2127 char file_sq[SIZEOF_STR];
2128 char *editor;
2129
2130 editor = getenv("GIT_EDITOR");
2131 if (!editor && *opt_editor)
2132 editor = opt_editor;
2133 if (!editor)
2134 editor = getenv("VISUAL");
2135 if (!editor)
2136 editor = getenv("EDITOR");
2137 if (!editor)
2138 editor = "vi";
2139
2140 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2141 string_format(cmd, "%s %s", editor, file_sq)) {
2142 def_prog_mode(); /* save current tty modes */
2143 endwin(); /* restore original tty modes */
2144 system(cmd);
2145 reset_prog_mode();
2146 redraw_display();
2147 }
2148}
b801d8b2 2149
6b161b31
JF		 2150/*
2151 * User request switch noodle
2152 */
2153
b801d8b2 2154static int
6b161b31 2155view_driver(struct view *view, enum request request)
b801d8b2 2156{
b801d8b2
JF		 2157 int i;
2158
586c423d
JF		 2159 if (view && view->lines) {
2160 request = view->ops->request(view, request, &view->line[view->lineno]);
2161 if (request == REQ_NONE)
2162 return TRUE;
2163 }
2164
b801d8b2 2165 switch (request) {
4a2909a7
JF		 2166 case REQ_MOVE_UP:
2167 case REQ_MOVE_DOWN:
2168 case REQ_MOVE_PAGE_UP:
2169 case REQ_MOVE_PAGE_DOWN:
2170 case REQ_MOVE_FIRST_LINE:
2171 case REQ_MOVE_LAST_LINE:
8522ecc7 2172 move_view(view, request);
fd85fef1
JF		 2173 break;
2174
4a2909a7
JF		 2175 case REQ_SCROLL_LINE_DOWN:
2176 case REQ_SCROLL_LINE_UP:
2177 case REQ_SCROLL_PAGE_DOWN:
2178 case REQ_SCROLL_PAGE_UP:
a28bcc22 2179 scroll_view(view, request);
b801d8b2
JF		 2180 break;
2181
e733ee54
JF		 2182 case REQ_VIEW_BLOB:
2183 if (!ref_blob[0]) {
550cd4b5
JF		 2184 report("No file chosen, press %s to open tree view",
2185 get_key(REQ_VIEW_TREE));
e733ee54
JF		 2186 break;
2187 }
5c4358d1
JF		 2188 open_view(view, request, OPEN_DEFAULT);
2189 break;
2190
2191 case REQ_VIEW_PAGER:
b64c5b75 2192 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
5c4358d1
JF		 2193 report("No pager content, press %s to run command from prompt",
2194 get_key(REQ_PROMPT));
2195 break;
2196 }
2197 open_view(view, request, OPEN_DEFAULT);
2198 break;
2199
4a2909a7 2200 case REQ_VIEW_MAIN:
4a2909a7 2201 case REQ_VIEW_DIFF:
2e8488b4 2202 case REQ_VIEW_LOG:
e733ee54 2203 case REQ_VIEW_TREE:
2e8488b4 2204 case REQ_VIEW_HELP:
173d76ea 2205 case REQ_VIEW_STATUS:
49f2b43f 2206 open_view(view, request, OPEN_DEFAULT);
b801d8b2
JF		 2207 break;
2208
b3a54cba
JF		 2209 case REQ_NEXT:
2210 case REQ_PREVIOUS:
2211 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2212
e733ee54
JF		 2213 if ((view == VIEW(REQ_VIEW_DIFF) &&
2214 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2215 (view == VIEW(REQ_VIEW_BLOB) &&
2216 view->parent == VIEW(REQ_VIEW_TREE))) {
03400136
WF		 2217 int line;
2218
b3a54cba 2219 view = view->parent;
03400136 2220 line = view->lineno;
8522ecc7
JF		 2221 move_view(view, request);
2222 if (view_is_displayed(view))
f0b3ab80 2223 update_view_title(view);
328d27f7
JF		 2224 if (line != view->lineno)
2225 view->ops->request(view, REQ_ENTER,
2226 &view->line[view->lineno]);
2227
b3a54cba 2228 } else {
8522ecc7 2229 move_view(view, request);
b3a54cba 2230 }
328d27f7 2231 break;
6b161b31 2232
03a93dbb
JF		 2233 case REQ_VIEW_NEXT:
2234 {
9f41488f 2235 int nviews = displayed_views();
03a93dbb
JF		 2236 int next_view = (current_view + 1) % nviews;
2237
2238 if (next_view == current_view) {
2239 report("Only one view is displayed");
2240 break;
2241 }
2242
2243 current_view = next_view;
2244 /* Blur out the title of the previous view. */
2245 update_view_title(view);
6734f6b9 2246 report("");
03a93dbb
JF		 2247 break;
2248 }
24b5b3e0 2249 case REQ_TOGGLE_LINENO:
b76c2afc 2250 opt_line_number = !opt_line_number;
20bb5e18 2251 redraw_display();
b801d8b2
JF		 2252 break;
2253
54efb62b
JF		 2254 case REQ_TOGGLE_REV_GRAPH:
2255 opt_rev_graph = !opt_rev_graph;
2256 redraw_display();
2257 break;
2258
03a93dbb 2259 case REQ_PROMPT:
8855ada4 2260 /* Always reload^Wrerun commands from the prompt. */
49f2b43f 2261 open_view(view, opt_request, OPEN_RELOAD);
03a93dbb
JF		 2262 break;
2263
4af34daa
JF		 2264 case REQ_SEARCH:
2265 case REQ_SEARCH_BACK:
c02d8fce 2266 search_view(view, request);
4af34daa
JF		 2267 break;
2268
2269 case REQ_FIND_NEXT:
2270 case REQ_FIND_PREV:
2271 find_next(view, request);
2272 break;
2273
4a2909a7 2274 case REQ_STOP_LOADING:
59a45d3a
JF		 2275 for (i = 0; i < ARRAY_SIZE(views); i++) {
2276 view = &views[i];
2e8488b4 2277 if (view->pipe)
6a7bb912 2278 report("Stopped loading the %s view", view->name),
03a93dbb
JF		 2279 end_update(view);
2280 }
b801d8b2
JF		 2281 break;
2282
4a2909a7 2283 case REQ_SHOW_VERSION:
73785605 2284 report("tig-%s (built %s)", VERSION, __DATE__);
b801d8b2
JF		 2285 return TRUE;
2286
fac7db6c
JF		 2287 case REQ_SCREEN_RESIZE:
2288 resize_display();
2289 /* Fall-through */
4a2909a7 2290 case REQ_SCREEN_REDRAW:
20bb5e18 2291 redraw_display();
4a2909a7
JF		 2292 break;
2293
0cea0d43
JF		 2294 case REQ_EDIT:
2295 report("Nothing to edit");
531c6c69
JF		 2296 break;
2297
2298 case REQ_ENTER:
2299 report("Nothing to enter");
2300 break;
ca1d71ea 2301
1d754561 2302 case REQ_NONE:
b801d8b2
JF		 2303 doupdate();
2304 return TRUE;
2305
4f9b667a 2306 case REQ_VIEW_CLOSE:
2fcf5401
JF		 2307 /* XXX: Mark closed views by letting view->parent point to the
2308 * view itself. Parents to closed view should never be
2309 * followed. */
2310 if (view->parent &&
2311 view->parent->parent != view->parent) {
4f9b667a
JF		 2312 memset(display, 0, sizeof(display));
2313 current_view = 0;
f6da0b66 2314 display[current_view] = view->parent;
2fcf5401 2315 view->parent = view;
4f9b667a
JF		 2316 resize_display();
2317 redraw_display();
2318 break;
2319 }
2320 /* Fall-through */
b801d8b2
JF		 2321 case REQ_QUIT:
2322 return FALSE;
2323
2324 default:
2e8488b4 2325 /* An unknown key will show most commonly used commands. */
468876c9 2326 report("Unknown key, press 'h' for help");
b801d8b2
JF		 2327 return TRUE;
2328 }
2329
2330 return TRUE;
2331}
2332
2333
2334/*
ff26aa29 2335 * Pager backend
b801d8b2
JF		 2336 */
2337
6b161b31 2338static bool
5dcf8064 2339pager_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
b801d8b2 2340{
fe7233c3
JF		 2341 char *text = line->data;
2342 enum line_type type = line->type;
2343 int textlen = strlen(text);
78c70acd 2344 int attr;
b801d8b2 2345
6706b2ba
JF		 2346 wmove(view->win, lineno, 0);
2347
5dcf8064 2348 if (selected) {
78c70acd 2349 type = LINE_CURSOR;
6706b2ba 2350 wchgat(view->win, -1, 0, type, NULL);
fd85fef1
JF		 2351 }
2352
78c70acd 2353 attr = get_line_attr(type);
b801d8b2 2354 wattrset(view->win, attr);
b76c2afc 2355
6706b2ba
JF		 2356 if (opt_line_number || opt_tab_size < TABSIZE) {
2357 static char spaces[] = " ";
2358 int col_offset = 0, col = 0;
2359
2360 if (opt_line_number) {
2361 unsigned long real_lineno = view->offset + lineno + 1;
82e78006 2362
6706b2ba
JF		 2363 if (real_lineno == 1 ||
2364 (real_lineno % opt_num_interval) == 0) {
2365 wprintw(view->win, "%.*d", view->digits, real_lineno);
8855ada4 2366
6706b2ba
JF		 2367 } else {
2368 waddnstr(view->win, spaces,
2369 MIN(view->digits, STRING_SIZE(spaces)));
2370 }
2371 waddstr(view->win, ": ");
2372 col_offset = view->digits + 2;
2373 }
8855ada4 2374
fe7233c3 2375 while (text && col_offset + col < view->width) {
6706b2ba 2376 int cols_max = view->width - col_offset - col;
fe7233c3 2377 char *pos = text;
6706b2ba 2378 int cols;
4c6fabc2 2379
fe7233c3
JF		 2380 if (*text == '\t') {
2381 text++;
6706b2ba 2382 assert(sizeof(spaces) > TABSIZE);
fe7233c3 2383 pos = spaces;
6706b2ba 2384 cols = opt_tab_size - (col % opt_tab_size);
82e78006 2385
b76c2afc 2386 } else {
fe7233c3
JF		 2387 text = strchr(text, '\t');
2388 cols = line ? text - pos : strlen(pos);
b76c2afc 2389 }
6706b2ba 2390
fe7233c3 2391 waddnstr(view->win, pos, MIN(cols, cols_max));
6706b2ba 2392 col += cols;
b76c2afc 2393 }
b76c2afc
JF		 2394
2395 } else {
6706b2ba 2396 int col = 0, pos = 0;
b801d8b2 2397
fe7233c3
JF		 2398 for (; pos < textlen && col < view->width; pos++, col++)
2399 if (text[pos] == '\t')
6706b2ba
JF		 2400 col += TABSIZE - (col % TABSIZE) - 1;
2401
fe7233c3 2402 waddnstr(view->win, text, pos);
6706b2ba 2403 }
2e8488b4 2404
b801d8b2
JF		 2405 return TRUE;
2406}
2407
dc23c0e3 2408static bool
d65ced0d 2409add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
dc23c0e3 2410{
17482b11 2411 char refbuf[SIZEOF_STR];
dc23c0e3
JF		 2412 char *ref = NULL;
2413 FILE *pipe;
2414
d3c345f7 2415 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
dc23c0e3
JF		 2416 return TRUE;
2417
2418 pipe = popen(refbuf, "r");
2419 if (!pipe)
2420 return TRUE;
2421
2422 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2423 ref = chomp_string(ref);
2424 pclose(pipe);
2425
2426 if (!ref || !*ref)
2427 return TRUE;
2428
2429 /* This is the only fatal call, since it can "corrupt" the buffer. */
17482b11 2430 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
dc23c0e3
JF		 2431 return FALSE;
2432
2433 return TRUE;
2434}
2435
7b99a34c
JF		 2436static void
2437add_pager_refs(struct view *view, struct line *line)
2438{
17482b11 2439 char buf[SIZEOF_STR];
c9ca1ec3 2440 char *commit_id = line->data + STRING_SIZE("commit ");
7b99a34c 2441 struct ref **refs;
d65ced0d 2442 size_t bufpos = 0, refpos = 0;
7b99a34c 2443 const char *sep = "Refs: ";
dc23c0e3 2444 bool is_tag = FALSE;
7b99a34c
JF		 2445
2446 assert(line->type == LINE_COMMIT);
2447
c9ca1ec3 2448 refs = get_refs(commit_id);
dc23c0e3
JF		 2449 if (!refs) {
2450 if (view == VIEW(REQ_VIEW_DIFF))
2451 goto try_add_describe_ref;
7b99a34c 2452 return;
dc23c0e3 2453 }
7b99a34c
JF		 2454
2455 do {
cc2d1364 2456 struct ref *ref = refs[refpos];
e15ec88e
JF		 2457 char *fmt = ref->tag ? "%s[%s]" :
2458 ref->remote ? "%s<%s>" : "%s%s";
7b99a34c 2459
cc2d1364
JF		 2460 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2461 return;
7b99a34c 2462 sep = ", ";
dc23c0e3
JF		 2463 if (ref->tag)
2464 is_tag = TRUE;
7b99a34c
JF		 2465 } while (refs[refpos++]->next);
2466
dc23c0e3
JF		 2467 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2468try_add_describe_ref:
d42c8a35 2469 /* Add <tag>-g<commit_id> "fake" reference. */
dc23c0e3
JF		 2470 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2471 return;
2472 }
2473
d42c8a35
JF		 2474 if (bufpos == 0)
2475 return;
2476
cc2d1364 2477 if (!realloc_lines(view, view->line_size + 1))
7b99a34c
JF		 2478 return;
2479
0a0d8910 2480 add_line_text(view, buf, LINE_PP_REFS);
7b99a34c
JF		 2481}
2482
6b161b31 2483static bool
701e4f5d 2484pager_read(struct view *view, char *data)
22f66b0a 2485{
0a0d8910 2486 struct line *line;
22f66b0a 2487
be04d936
JF		 2488 if (!data)
2489 return TRUE;
2490
0a0d8910
JF		 2491 line = add_line_text(view, data, get_line_type(data));
2492 if (!line)
7b99a34c 2493 return FALSE;
fe7233c3 2494
7b99a34c
JF		 2495 if (line->type == LINE_COMMIT &&
2496 (view == VIEW(REQ_VIEW_DIFF) ||
2497 view == VIEW(REQ_VIEW_LOG)))
2498 add_pager_refs(view, line);
2499
22f66b0a
JF		 2500 return TRUE;
2501}
2502
586c423d
JF		 2503static enum request
2504pager_request(struct view *view, enum request request, struct line *line)
6b161b31 2505{
91e8e277 2506 int split = 0;
6b161b31 2507
586c423d
JF		 2508 if (request != REQ_ENTER)
2509 return request;
2510
9fbbd28f
JF		 2511 if (line->type == LINE_COMMIT &&
2512 (view == VIEW(REQ_VIEW_LOG) ||
2513 view == VIEW(REQ_VIEW_PAGER))) {
91e8e277
JF		 2514 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
2515 split = 1;
67e48ac5
JF		 2516 }
2517
91e8e277
JF		 2518 /* Always scroll the view even if it was split. That way
2519 * you can use Enter to scroll through the log view and
2520 * split open each commit diff. */
2521 scroll_view(view, REQ_SCROLL_LINE_DOWN);
2522
2523 /* FIXME: A minor workaround. Scrolling the view will call report("")
9d82d824
JF		 2524 * but if we are scrolling a non-current view this won't properly
2525 * update the view title. */
91e8e277
JF		 2526 if (split)
2527 update_view_title(view);
6b161b31 2528
586c423d 2529 return REQ_NONE;
6b161b31
JF		 2530}
2531
4af34daa
JF		 2532static bool
2533pager_grep(struct view *view, struct line *line)
2534{
2535 regmatch_t pmatch;
2536 char *text = line->data;
2537
2538 if (!*text)
2539 return FALSE;
2540
b77b2cb8 2541 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
4af34daa
JF		 2542 return FALSE;
2543
2544 return TRUE;
2545}
2546
d720de4b
JF		 2547static void
2548pager_select(struct view *view, struct line *line)
2549{
2550 if (line->type == LINE_COMMIT) {
035ba11f 2551 char *text = line->data + STRING_SIZE("commit ");
d720de4b 2552
035ba11f 2553 if (view != VIEW(REQ_VIEW_PAGER))
2463b4ea
JF		 2554 string_copy_rev(view->ref, text);
2555 string_copy_rev(ref_commit, text);
d720de4b
JF		 2556 }
2557}
2558
6b161b31 2559static struct view_ops pager_ops = {
6734f6b9 2560 "line",
f098944b 2561 NULL,
6b161b31 2562 pager_read,
f098944b 2563 pager_draw,
586c423d 2564 pager_request,
f098944b
JF		 2565 pager_grep,
2566 pager_select,
2567};
2568
2569
2570/*
2571 * Help backend
2572 */
2573
2574static bool
2575help_open(struct view *view)
2576{
2577 char buf[BUFSIZ];
2578 int lines = ARRAY_SIZE(req_info) + 2;
2579 int i;
2580
2581 if (view->lines > 0)
2582 return TRUE;
2583
2584 for (i = 0; i < ARRAY_SIZE(req_info); i++)
2585 if (!req_info[i].request)
2586 lines++;
2587
2588 view->line = calloc(lines, sizeof(*view->line));
2589 if (!view->line)
2590 return FALSE;
2591
2592 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
2593
2594 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
2595 char *key;
2596
2597 if (!req_info[i].request) {
2598 add_line_text(view, "", LINE_DEFAULT);
2599 add_line_text(view, req_info[i].help, LINE_DEFAULT);
2600 continue;
2601 }
2602
2603 key = get_key(req_info[i].request);
2604 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
2605 continue;
2606
2607 add_line_text(view, buf, LINE_DEFAULT);
2608 }
2609
2610 return TRUE;
2611}
2612
2613static struct view_ops help_ops = {
2614 "line",
2615 help_open,
2616 NULL,
2617 pager_draw,
586c423d 2618 pager_request,
4af34daa 2619 pager_grep,
d720de4b 2620 pager_select,
6b161b31
JF		 2621};
2622
80ce96ea 2623
ff26aa29 2624/*
e733ee54
JF		 2625 * Tree backend
2626 */
2627
4795d620 2628/* Parse output from git-ls-tree(1):
e733ee54
JF		 2629 *
2630 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
2631 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
2632 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
2633 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
2634 */
2635
2636#define SIZEOF_TREE_ATTR \
2637 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
2638
2639#define TREE_UP_FORMAT "040000 tree %s\t.."
2640
2641static int
2642tree_compare_entry(enum line_type type1, char *name1,
2643 enum line_type type2, char *name2)
2644{
2645 if (type1 != type2) {
2646 if (type1 == LINE_TREE_DIR)
2647 return -1;
2648 return 1;
2649 }
2650
2651 return strcmp(name1, name2);
2652}
2653
2654static bool
2655tree_read(struct view *view, char *text)
2656{
be04d936 2657 size_t textlen = text ? strlen(text) : 0;
e733ee54
JF		 2658 char buf[SIZEOF_STR];
2659 unsigned long pos;
2660 enum line_type type;
f88a5319 2661 bool first_read = view->lines == 0;
e733ee54
JF		 2662
2663 if (textlen <= SIZEOF_TREE_ATTR)
2664 return FALSE;
2665
2666 type = text[STRING_SIZE("100644 ")] == 't'
2667 ? LINE_TREE_DIR : LINE_TREE_FILE;
2668
f88a5319 2669 if (first_read) {
e733ee54 2670 /* Add path info line */
0a0d8910
JF		 2671 if (!string_format(buf, "Directory path /%s", opt_path) ||
2672 !realloc_lines(view, view->line_size + 1) ||
2673 !add_line_text(view, buf, LINE_DEFAULT))
e733ee54
JF		 2674 return FALSE;
2675
2676 /* Insert "link" to parent directory. */
0a0d8910
JF		 2677 if (*opt_path) {
2678 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
2679 !realloc_lines(view, view->line_size + 1) ||
2680 !add_line_text(view, buf, LINE_TREE_DIR))
2681 return FALSE;
2682 }
e733ee54
JF		 2683 }
2684
2685 /* Strip the path part ... */
2686 if (*opt_path) {
2687 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
2688 size_t striplen = strlen(opt_path);
2689 char *path = text + SIZEOF_TREE_ATTR;
2690
2691 if (pathlen > striplen)
2692 memmove(path, path + striplen,
2693 pathlen - striplen + 1);
2694 }
2695
2696 /* Skip "Directory ..." and ".." line. */
2697 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
2698 struct line *line = &view->line[pos];
2699 char *path1 = ((char *) line->data) + SIZEOF_TREE_ATTR;
2700 char *path2 = text + SIZEOF_TREE_ATTR;
2701 int cmp = tree_compare_entry(line->type, path1, type, path2);
2702
2703 if (cmp <= 0)
2704 continue;
2705
2706 text = strdup(text);
2707 if (!text)
2708 return FALSE;
2709
2710 if (view->lines > pos)
2711 memmove(&view->line[pos + 1], &view->line[pos],
2712 (view->lines - pos) * sizeof(*line));
2713
2714 line = &view->line[pos];
2715 line->data = text;
2716 line->type = type;
2717 view->lines++;
2718 return TRUE;
2719 }
2720
0a0d8910 2721 if (!add_line_text(view, text, type))
e733ee54
JF		 2722 return FALSE;
2723
f88a5319
JF		 2724 /* Move the current line to the first tree entry. */
2725 if (first_read)
2726 view->lineno++;
2727
e733ee54
JF		 2728 return TRUE;
2729}
2730
586c423d
JF		 2731static enum request
2732tree_request(struct view *view, enum request request, struct line *line)
e733ee54 2733{
aac64c17 2734 enum open_flags flags;
586c423d
JF		 2735
2736 if (request != REQ_ENTER)
2737 return request;
e733ee54
JF		 2738
2739 switch (line->type) {
2740 case LINE_TREE_DIR:
2741 /* Depending on whether it is a subdir or parent (updir?) link
2742 * mangle the path buffer. */
2743 if (line == &view->line[1] && *opt_path) {
2744 size_t path_len = strlen(opt_path);
2745 char *dirsep = opt_path + path_len - 1;
2746
2747 while (dirsep > opt_path && dirsep[-1] != '/')
2748 dirsep--;
2749
2750 dirsep[0] = 0;
2751
2752 } else {
d65ced0d 2753 size_t pathlen = strlen(opt_path);
4ea4ce91 2754 size_t origlen = pathlen;
4795d620 2755 char *data = line->data;
e733ee54
JF		 2756 char *basename = data + SIZEOF_TREE_ATTR;
2757
4038038f 2758 if (!string_format_from(opt_path, &pathlen, "%s/", basename)) {
4ea4ce91
JF		 2759 opt_path[origlen] = 0;
2760 return TRUE;
2761 }
e733ee54
JF		 2762 }
2763
2764 /* Trees and subtrees share the same ID, so they are not not
2765 * unique like blobs. */
aac64c17 2766 flags = OPEN_RELOAD;
e733ee54
JF		 2767 request = REQ_VIEW_TREE;
2768 break;
2769
2770 case LINE_TREE_FILE:
aac64c17 2771 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
e733ee54
JF		 2772 request = REQ_VIEW_BLOB;
2773 break;
2774
2775 default:
2776 return TRUE;
2777 }
2778
2779 open_view(view, request, flags);
2780
586c423d 2781 return REQ_NONE;
e733ee54
JF		 2782}
2783
d720de4b
JF		 2784static void
2785tree_select(struct view *view, struct line *line)
2786{
035ba11f 2787 char *text = line->data + STRING_SIZE("100644 blob ");
73c76ef5
JF		 2788
2789 if (line->type == LINE_TREE_FILE) {
2463b4ea 2790 string_copy_rev(ref_blob, text);
d720de4b 2791
ebbaf4fe
JF		 2792 } else if (line->type != LINE_TREE_DIR) {
2793 return;
d720de4b 2794 }
ebbaf4fe 2795
2463b4ea 2796 string_copy_rev(view->ref, text);
d720de4b
JF		 2797}
2798
e733ee54
JF		 2799static struct view_ops tree_ops = {
2800 "file",
f098944b 2801 NULL,
e733ee54 2802 tree_read,
f098944b 2803 pager_draw,
586c423d 2804 tree_request,
e733ee54 2805 pager_grep,
d720de4b 2806 tree_select,
e733ee54
JF		 2807};
2808
2809static bool
2810blob_read(struct view *view, char *line)
2811{
0a0d8910 2812 return add_line_text(view, line, LINE_DEFAULT);
e733ee54
JF		 2813}
2814
2815static struct view_ops blob_ops = {
2816 "line",
f098944b 2817 NULL,
e733ee54 2818 blob_read,
f098944b 2819 pager_draw,
586c423d 2820 pager_request,
e733ee54 2821 pager_grep,
d720de4b 2822 pager_select,
e733ee54
JF		 2823};
2824
2825
2826/*
173d76ea
JF		 2827 * Status backend
2828 */
2829
2830struct status {
2831 char status;
2832 struct {
2833 mode_t mode;
2834 char rev[SIZEOF_REV];
2835 } old;
2836 struct {
2837 mode_t mode;
2838 char rev[SIZEOF_REV];
2839 } new;
2840 char name[SIZEOF_STR];
2841};
2842
2843/* Get fields from the diff line:
2844 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
2845 */
2846static inline bool
2847status_get_diff(struct status *file, char *buf, size_t bufsize)
2848{
2849 char *old_mode = buf + 1;
2850 char *new_mode = buf + 8;
2851 char *old_rev = buf + 15;
2852 char *new_rev = buf + 56;
2853 char *status = buf + 97;
2854
2855 if (bufsize != 99 ||
2856 old_mode[-1] != ':' ||
2857 new_mode[-1] != ' ' ||
2858 old_rev[-1] != ' ' ||
2859 new_rev[-1] != ' ' ||
2860 status[-1] != ' ')
2861 return FALSE;
2862
2863 file->status = *status;
2864
2865 string_copy_rev(file->old.rev, old_rev);
2866 string_copy_rev(file->new.rev, new_rev);
2867
2868 file->old.mode = strtoul(old_mode, NULL, 8);
2869 file->new.mode = strtoul(new_mode, NULL, 8);
2870
2871 file->name[0] = 0;
2872
2873 return TRUE;
2874}
2875
2876static bool
2877status_run(struct view *view, const char cmd[], bool diff, enum line_type type)
2878{
2879 struct status *file = NULL;
2880 char buf[SIZEOF_STR * 4];
2881 size_t bufsize = 0;
2882 FILE *pipe;
2883
2884 pipe = popen(cmd, "r");
2885 if (!pipe)
2886 return FALSE;
2887
2888 add_line_data(view, NULL, type);
2889
2890 while (!feof(pipe) && !ferror(pipe)) {
2891 char *sep;
2892 size_t readsize;
2893
2894 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
2895 if (!readsize)
2896 break;
2897 bufsize += readsize;
2898
2899 /* Process while we have NUL chars. */
2900 while ((sep = memchr(buf, 0, bufsize))) {
2901 size_t sepsize = sep - buf + 1;
2902
2903 if (!file) {
2904 if (!realloc_lines(view, view->line_size + 1))
2905 goto error_out;
2906
2907 file = calloc(1, sizeof(*file));
2908 if (!file)
2909 goto error_out;
2910
2911 add_line_data(view, file, type);
2912 }
2913
2914 /* Parse diff info part. */
2915 if (!diff) {
2916 file->status = '?';
2917
2918 } else if (!file->status) {
2919 if (!status_get_diff(file, buf, sepsize))
2920 goto error_out;
2921
2922 bufsize -= sepsize;
2923 memmove(buf, sep + 1, bufsize);
2924
2925 sep = memchr(buf, 0, bufsize);
2926 if (!sep)
2927 break;
2928 sepsize = sep - buf + 1;
2929 }
2930
2931 /* git-ls-files just delivers a NUL separated
2932 * list of file names similar to the second half
2933 * of the git-diff-* output. */
2934 string_ncopy(file->name, buf, sepsize);
2935 bufsize -= sepsize;
2936 memmove(buf, sep + 1, bufsize);
2937 file = NULL;
2938 }
2939 }
2940
2941 if (ferror(pipe)) {
2942error_out:
2943 pclose(pipe);
2944 return FALSE;
2945 }
2946
2947 if (!view->line[view->lines - 1].data)
2948 add_line_data(view, NULL, LINE_STAT_NONE);
2949
2950 pclose(pipe);
2951 return TRUE;
2952}
2953
2954#define STATUS_DIFF_INDEX_CMD "git diff-index -z --cached HEAD"
2955#define STATUS_DIFF_FILES_CMD "git diff-files -z"
2956#define STATUS_LIST_OTHER_CMD \
810f0078 2957 "git ls-files -z --others --exclude-per-directory=.gitignore"
173d76ea 2958
89d917a2
JF		 2959#define STATUS_DIFF_SHOW_CMD \
2960 "git diff --root --patch-with-stat --find-copies-harder -B -C %s -- %s 2>/dev/null"
2961
173d76ea
JF		 2962/* First parse staged info using git-diff-index(1), then parse unstaged
2963 * info using git-diff-files(1), and finally untracked files using
2964 * git-ls-files(1). */
2965static bool
2966status_open(struct view *view)
2967{
810f0078
JF		 2968 struct stat statbuf;
2969 char exclude[SIZEOF_STR];
2970 char cmd[SIZEOF_STR];
173d76ea
JF		 2971 size_t i;
2972
2973 for (i = 0; i < view->lines; i++)
2974 free(view->line[i].data);
2975 free(view->line);
2976 view->lines = view->line_size = 0;
2977 view->line = NULL;
2978
2979 if (!realloc_lines(view, view->line_size + 6))
2980 return FALSE;
2981
810f0078
JF		 2982 if (!string_format(exclude, "%s/info/exclude", opt_git_dir))
2983 return FALSE;
2984
2985 string_copy(cmd, STATUS_LIST_OTHER_CMD);
2986
2987 if (stat(exclude, &statbuf) >= 0) {
2988 size_t cmdsize = strlen(cmd);
2989
2990 if (!string_format_from(cmd, &cmdsize, " %s", "--exclude-from=") ||
2991 sq_quote(cmd, cmdsize, exclude) >= sizeof(cmd))
2992 return FALSE;
2993 }
2994
173d76ea
JF		 2995 if (!status_run(view, STATUS_DIFF_INDEX_CMD, TRUE, LINE_STAT_STAGED) ||
2996 !status_run(view, STATUS_DIFF_FILES_CMD, TRUE, LINE_STAT_UNSTAGED) ||
810f0078 2997 !status_run(view, cmd, FALSE, LINE_STAT_UNTRACKED))
173d76ea
JF		 2998 return FALSE;
2999
3000 return TRUE;
3001}
3002
3003static bool
3004status_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3005{
3006 struct status *status = line->data;
3007
3008 wmove(view->win, lineno, 0);
3009
3010 if (selected) {
3011 wattrset(view->win, get_line_attr(LINE_CURSOR));
3012 wchgat(view->win, -1, 0, LINE_CURSOR, NULL);
3013
3014 } else if (!status && line->type != LINE_STAT_NONE) {
3015 wattrset(view->win, get_line_attr(LINE_STAT_SECTION));
3016 wchgat(view->win, -1, 0, LINE_STAT_SECTION, NULL);
3017
3018 } else {
3019 wattrset(view->win, get_line_attr(line->type));
3020 }
3021
3022 if (!status) {
3023 char *text;
3024
3025 switch (line->type) {
3026 case LINE_STAT_STAGED:
3027 text = "Changes to be committed:";
3028 break;
3029
3030 case LINE_STAT_UNSTAGED:
3031 text = "Changed but not updated:";
3032 break;
3033
3034 case LINE_STAT_UNTRACKED:
3035 text = "Untracked files:";
3036 break;
3037
3038 case LINE_STAT_NONE:
3039 text = " (no files)";
3040 break;
3041
3042 default:
3043 return FALSE;
3044 }
3045
3046 waddstr(view->win, text);
3047 return TRUE;
3048 }
3049
3050 waddch(view->win, status->status);
3051 if (!selected)
3052 wattrset(view->win, A_NORMAL);
3053 wmove(view->win, lineno, 4);
3054 waddstr(view->win, status->name);
3055
3056 return TRUE;
3057}
3058
586c423d 3059static enum request
88f66e2d 3060status_enter(struct view *view, struct line *line)
173d76ea 3061{
89d917a2 3062 struct status *status = line->data;
4e8159cf 3063 char path[SIZEOF_STR] = "";
89d917a2
JF		 3064 char *info;
3065 size_t cmdsize = 0;
3066
4e8159cf
JF		 3067 if (line->type == LINE_STAT_NONE ||
3068 (!status && line[1].type == LINE_STAT_NONE)) {
3069 report("No file to diff");
586c423d 3070 return REQ_NONE;
89d917a2
JF		 3071 }
3072
4e8159cf 3073 if (status && sq_quote(path, 0, status->name) >= sizeof(path))
586c423d 3074 return REQ_QUIT;
89d917a2
JF		 3075
3076 if (opt_cdup[0] &&
3077 line->type != LINE_STAT_UNTRACKED &&
3078 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
586c423d 3079 return REQ_QUIT;
89d917a2
JF		 3080
3081 switch (line->type) {
3082 case LINE_STAT_STAGED:
3083 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3084 "--cached", path))
586c423d 3085 return REQ_QUIT;
4e8159cf
JF		 3086 if (status)
3087 info = "Staged changes to %s";
3088 else
3089 info = "Staged changes";
89d917a2
JF		 3090 break;
3091
3092 case LINE_STAT_UNSTAGED:
3093 if (!string_format_from(opt_cmd, &cmdsize, STATUS_DIFF_SHOW_CMD,
3094 "", path))
586c423d 3095 return REQ_QUIT;
4e8159cf
JF		 3096 if (status)
3097 info = "Unstaged changes to %s";
3098 else
3099 info = "Unstaged changes";
89d917a2
JF		 3100 break;
3101
3102 case LINE_STAT_UNTRACKED:
3103 if (opt_pipe)
586c423d
JF		 3104 return REQ_QUIT;
3105
4e8159cf
JF		 3106
3107 if (!status) {
3108 report("No file to show");
586c423d 3109 return REQ_NONE;
4e8159cf
JF		 3110 }
3111
89d917a2
JF		 3112 opt_pipe = fopen(status->name, "r");
3113 info = "Untracked file %s";
3114 break;
3115
3116 default:
3117 die("w00t");
3118 }
3119
3120 open_view(view, REQ_VIEW_DIFF, OPEN_RELOAD | OPEN_SPLIT);
3121 if (view_is_displayed(VIEW(REQ_VIEW_DIFF))) {
3122 string_format(VIEW(REQ_VIEW_DIFF)->ref, info, status->name);
3123 }
3124
586c423d 3125 return REQ_NONE;
ca1d71ea
JF		 3126}
3127
88f66e2d 3128
ca1d71ea
JF		 3129static bool
3130status_update_file(struct view *view, struct status *status, enum line_type type)
3131{
91c5d983 3132 char cmd[SIZEOF_STR];
173d76ea 3133 char buf[SIZEOF_STR];
91c5d983 3134 size_t cmdsize = 0;
173d76ea
JF		 3135 size_t bufsize = 0;
3136 size_t written = 0;
3137 FILE *pipe;
3138
91c5d983 3139 if (opt_cdup[0] &&
ca1d71ea 3140 type != LINE_STAT_UNTRACKED &&
91c5d983
JF		 3141 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
3142 return FALSE;
3143
ca1d71ea 3144 switch (type) {
173d76ea
JF		 3145 case LINE_STAT_STAGED:
3146 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
3147 status->old.mode,
3148 status->old.rev,
3149 status->name, 0))
3150 return FALSE;
91c5d983
JF		 3151
3152 string_add(cmd, cmdsize, "git update-index -z --index-info");
173d76ea
JF		 3153 break;
3154
3155 case LINE_STAT_UNSTAGED:
3156 case LINE_STAT_UNTRACKED:
3157 if (!string_format_from(buf, &bufsize, "%s%c", status->name, 0))
3158 return FALSE;
91c5d983
JF		 3159
3160 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
173d76ea
JF		 3161 break;
3162
3163 default:
3164 die("w00t");
3165 }
3166
3167 pipe = popen(cmd, "w");
3168 if (!pipe)
3169 return FALSE;
3170
3171 while (!ferror(pipe) && written < bufsize) {
3172 written += fwrite(buf + written, 1, bufsize - written, pipe);
3173 }
3174
3175 pclose(pipe);
3176
3177 if (written != bufsize)
3178 return FALSE;
3179
173d76ea
JF		 3180 return TRUE;
3181}
3182
3183static void
ca1d71ea
JF		 3184status_update(struct view *view)
3185{
dec7b437 3186 struct line *line = &view->line[view->lineno];
351917f8 3187
dec7b437 3188 assert(view->lines);
11359638 3189
dec7b437
JF		 3190 if (!line->data) {
3191 while (++line < view->line + view->lines && line->data) {
3192 if (!status_update_file(view, line->data, line->type))
3193 report("Failed to update file status");
3194 }
11359638 3195
dec7b437
JF		 3196 if (!line[-1].data) {
3197 report("Nothing to update");
3198 return;
93e4c4f6
JF		 3199 }
3200
dec7b437
JF		 3201 } else if (!status_update_file(view, line->data, line->type)) {
3202 report("Failed to update file status");
ca1d71ea 3203 }
dec7b437
JF		 3204
3205 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
ca1d71ea
JF		 3206}
3207
88f66e2d
JF		 3208static enum request
3209status_request(struct view *view, enum request request, struct line *line)
3210{
0cea0d43
JF		 3211 struct status *status = line->data;
3212
88f66e2d
JF		 3213 switch (request) {
3214 case REQ_STATUS_UPDATE:
3215 status_update(view);
3216 break;
3217
0cea0d43
JF		 3218 case REQ_EDIT:
3219 if (!status)
3220 return request;
3221
3222 open_editor(view, status->name);
3223 break;
3224
88f66e2d
JF		 3225 case REQ_ENTER:
3226 status_enter(view, line);
3227 break;
3228
3229 default:
3230 return request;
3231 }
3232
3233 return REQ_NONE;
3234}
3235
ca1d71ea 3236static void
173d76ea
JF		 3237status_select(struct view *view, struct line *line)
3238{
11359638
JF		 3239 struct status *status = line->data;
3240 char file[SIZEOF_STR] = "all files";
173d76ea
JF		 3241 char *text;
3242
11359638
JF		 3243 if (status && !string_format(file, "'%s'", status->name))
3244 return;
3245
3246 if (!status && line[1].type == LINE_STAT_NONE)
3247 line++;
3248
173d76ea
JF		 3249 switch (line->type) {
3250 case LINE_STAT_STAGED:
11359638 3251 text = "Press %s to unstage %s for commit";
173d76ea
JF		 3252 break;
3253
3254 case LINE_STAT_UNSTAGED:
11359638 3255 text = "Press %s to stage %s for commit";
173d76ea
JF		 3256 break;
3257
3258 case LINE_STAT_UNTRACKED:
11359638 3259 text = "Press %s to stage %s for addition";
173d76ea
JF		 3260 break;
3261
3262 case LINE_STAT_NONE:
11359638
JF		 3263 text = "Nothing to update";
3264 break;
173d76ea
JF		 3265
3266 default:
3267 die("w00t");
3268 }
3269
11359638 3270 string_format(view->ref, text, get_key(REQ_STATUS_UPDATE), file);
173d76ea
JF		 3271}
3272
3273static bool
3274status_grep(struct view *view, struct line *line)
3275{
3276 struct status *status = line->data;
3277 enum { S_STATUS, S_NAME, S_END } state;
3278 char buf[2] = "?";
3279 regmatch_t pmatch;
3280
3281 if (!status)
3282 return FALSE;
3283
3284 for (state = S_STATUS; state < S_END; state++) {
3285 char *text;
3286
3287 switch (state) {
3288 case S_NAME: text = status->name; break;
3289 case S_STATUS:
3290 buf[0] = status->status;
3291 text = buf;
3292 break;
3293
3294 default:
3295 return FALSE;
3296 }
3297
3298 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3299 return TRUE;
3300 }
3301
3302 return FALSE;
3303}
3304
3305static struct view_ops status_ops = {
3306 "file",
3307 status_open,
3308 NULL,
3309 status_draw,
586c423d 3310 status_request,
173d76ea
JF		 3311 status_grep,
3312 status_select,
3313};
3314
3315
3316/*
ccc33449 3317 * Revision graph
ff26aa29
JF		 3318 */
3319
3320struct commit {
10446330 3321 char id[SIZEOF_REV]; /* SHA1 ID. */
aea510c8 3322 char title[128]; /* First line of the commit message. */
54efb62b
JF		 3323 char author[75]; /* Author of the commit. */
3324 struct tm time; /* Date from the author ident. */
3325 struct ref **refs; /* Repository references. */
3326 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
3327 size_t graph_size; /* The width of the graph array. */
ff26aa29 3328};
c34d9c9f 3329
ccc33449
JF		 3330/* Size of rev graph with no "padding" columns */
3331#define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
2b757533 3332
2ce5c87c
JF		 3333struct rev_graph {
3334 struct rev_graph *prev, *next, *parents;
2b757533
JF		 3335 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
3336 size_t size;
88757ebd
JF		 3337 struct commit *commit;
3338 size_t pos;
2b757533
JF		 3339};
3340
2b757533 3341/* Parents of the commit being visualized. */
446a5c36 3342static struct rev_graph graph_parents[4];
c8d60a25 3343
c65a501a 3344/* The current stack of revisions on the graph. */
446a5c36
JF		 3345static struct rev_graph graph_stacks[4] = {
3346 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
c65a501a 3347 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
446a5c36
JF		 3348 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
3349 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
c65a501a
JF		 3350};
3351
9e43b9cd 3352static inline bool
2ce5c87c 3353graph_parent_is_merge(struct rev_graph *graph)
9e43b9cd
JF		 3354{
3355 return graph->parents->size > 1;
3356}
3357
88757ebd 3358static inline void
2ce5c87c 3359append_to_rev_graph(struct rev_graph *graph, chtype symbol)
88757ebd 3360{
2c27faac
JF		 3361 struct commit *commit = graph->commit;
3362
3363 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
3364 commit->graph[commit->graph_size++] = symbol;
88757ebd
JF		 3365}
3366
2b757533 3367static void
2ce5c87c 3368done_rev_graph(struct rev_graph *graph)
987890af
JF		 3369{
3370 if (graph_parent_is_merge(graph) &&
3371 graph->pos < graph->size - 1 &&
3372 graph->next->size == graph->size + graph->parents->size - 1) {
3373 size_t i = graph->pos + graph->parents->size - 1;
3374
3375 graph->commit->graph_size = i * 2;
3376 while (i < graph->next->size - 1) {
3377 append_to_rev_graph(graph, ' ');
3378 append_to_rev_graph(graph, '\\');
3379 i++;
3380 }
3381 }
3382
3383 graph->size = graph->pos = 0;
3384 graph->commit = NULL;
3385 memset(graph->parents, 0, sizeof(*graph->parents));
3386}
3387
3388static void
2ce5c87c 3389push_rev_graph(struct rev_graph *graph, char *parent)
2b757533 3390{
2fe894e6
JF		 3391 int i;
3392
3393 /* "Collapse" duplicate parents lines.
3394 *
3395 * FIXME: This needs to also update update the drawn graph but
3396 * for now it just serves as a method for pruning graph lines. */
3397 for (i = 0; i < graph->size; i++)
3398 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
3399 return;
2b757533 3400
2ce5c87c 3401 if (graph->size < SIZEOF_REVITEMS) {
739e81de 3402 string_copy_rev(graph->rev[graph->size++], parent);
2b757533
JF		 3403 }
3404}
3405
92507a24
JF		 3406static chtype
3407get_rev_graph_symbol(struct rev_graph *graph)
2b757533 3408{
92507a24 3409 chtype symbol;
2b757533 3410
c65a501a 3411 if (graph->parents->size == 0)
c8d60a25 3412 symbol = REVGRAPH_INIT;
18ffaa23 3413 else if (graph_parent_is_merge(graph))
c8d60a25 3414 symbol = REVGRAPH_MERGE;
c65a501a 3415 else if (graph->pos >= graph->size)
c8d60a25 3416 symbol = REVGRAPH_BRANCH;
2b757533 3417 else
c8d60a25 3418 symbol = REVGRAPH_COMMIT;
1dcb3bec 3419
92507a24
JF		 3420 return symbol;
3421}
3422
3423static void
3424draw_rev_graph(struct rev_graph *graph)
3425{
e937c2c8
JF		 3426 struct rev_filler {
3427 chtype separator, line;
3428 };
3429 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
3430 static struct rev_filler fillers[] = {
3431 { ' ', REVGRAPH_LINE },
3432 { '`', '.' },
3433 { '\'', ' ' },
3434 { '/', ' ' },
e937c2c8 3435 };
92507a24 3436 chtype symbol = get_rev_graph_symbol(graph);
e937c2c8 3437 struct rev_filler *filler;
92507a24
JF		 3438 size_t i;
3439
e937c2c8 3440 filler = &fillers[DEFAULT];
110e948e 3441
c65a501a 3442 for (i = 0; i < graph->pos; i++) {
e937c2c8 3443 append_to_rev_graph(graph, filler->line);
9e43b9cd 3444 if (graph_parent_is_merge(graph->prev) &&
e937c2c8
JF		 3445 graph->prev->pos == i)
3446 filler = &fillers[RSHARP];
3447
3448 append_to_rev_graph(graph, filler->separator);
110e948e
JF		 3449 }
3450
92507a24 3451 /* Place the symbol for this revision. */
c65a501a 3452 append_to_rev_graph(graph, symbol);
2b757533 3453
e937c2c8
JF		 3454 if (graph->prev->size > graph->size)
3455 filler = &fillers[RDIAG];
3456 else
3457 filler = &fillers[DEFAULT];
3458
c8d60a25 3459 i++;
2b757533 3460
c65a501a 3461 for (; i < graph->size; i++) {
e937c2c8
JF		 3462 append_to_rev_graph(graph, filler->separator);
3463 append_to_rev_graph(graph, filler->line);
3464 if (graph_parent_is_merge(graph->prev) &&
3465 i < graph->prev->pos + graph->parents->size)
3466 filler = &fillers[RSHARP];
3467 if (graph->prev->size > graph->size)
3468 filler = &fillers[LDIAG];
c65a501a
JF		 3469 }
3470
3471 if (graph->prev->size > graph->size) {
e937c2c8
JF		 3472 append_to_rev_graph(graph, filler->separator);
3473 if (filler->line != ' ')
3474 append_to_rev_graph(graph, filler->line);
2b757533 3475 }
b5d8f208
JF		 3476}
3477
61eed810
JF		 3478/* Prepare the next rev graph */
3479static void
3480prepare_rev_graph(struct rev_graph *graph)
b5d8f208 3481{
b5d8f208
JF		 3482 size_t i;
3483
320df4ea 3484 /* First, traverse all lines of revisions up to the active one. */
c65a501a
JF		 3485 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
3486 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
b5d8f208 3487 break;
b5d8f208 3488
2ce5c87c 3489 push_rev_graph(graph->next, graph->rev[graph->pos]);
b5d8f208
JF		 3490 }
3491
320df4ea 3492 /* Interleave the new revision parent(s). */
c65a501a 3493 for (i = 0; i < graph->parents->size; i++)
2ce5c87c 3494 push_rev_graph(graph->next, graph->parents->rev[i]);
b5d8f208 3495
320df4ea 3496 /* Lastly, put any remaining revisions. */
c65a501a 3497 for (i = graph->pos + 1; i < graph->size; i++)
2ce5c87c 3498 push_rev_graph(graph->next, graph->rev[i]);
61eed810
JF		 3499}
3500
3501static void
3502update_rev_graph(struct rev_graph *graph)
3503{
446a5c36
JF		 3504 /* If this is the finalizing update ... */
3505 if (graph->commit)
3506 prepare_rev_graph(graph);
3507
3508 /* Graph visualization needs a one rev look-ahead,
3509 * so the first update doesn't visualize anything. */
3510 if (!graph->prev->commit)
3511 return;
c65a501a 3512
61eed810
JF		 3513 draw_rev_graph(graph->prev);
3514 done_rev_graph(graph->prev->prev);
2b757533
JF		 3515}
3516
ccc33449
JF		 3517
3518/*
3519 * Main view backend
3520 */
3521
3522static bool
3523main_draw(struct view *view, struct line *line, unsigned int lineno, bool selected)
3524{
3525 char buf[DATE_COLS + 1];
3526 struct commit *commit = line->data;
3527 enum line_type type;
3528 int col = 0;
3529 size_t timelen;
3530 size_t authorlen;
3531 int trimmed = 1;
3532
3533 if (!*commit->author)
3534 return FALSE;
3535
3536 wmove(view->win, lineno, col);
3537
3538 if (selected) {
3539 type = LINE_CURSOR;
3540 wattrset(view->win, get_line_attr(type));
3541 wchgat(view->win, -1, 0, type, NULL);
3542
3543 } else {
3544 type = LINE_MAIN_COMMIT;
3545 wattrset(view->win, get_line_attr(LINE_MAIN_DATE));
3546 }
3547
3548 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time);
3549 waddnstr(view->win, buf, timelen);
3550 waddstr(view->win, " ");
3551
3552 col += DATE_COLS;
3553 wmove(view->win, lineno, col);
3554 if (type != LINE_CURSOR)
3555 wattrset(view->win, get_line_attr(LINE_MAIN_AUTHOR));
3556
3557 if (opt_utf8) {
3558 authorlen = utf8_length(commit->author, AUTHOR_COLS - 2, &col, &trimmed);
3559 } else {
3560 authorlen = strlen(commit->author);
3561 if (authorlen > AUTHOR_COLS - 2) {
3562 authorlen = AUTHOR_COLS - 2;
3563 trimmed = 1;
3564 }
3565 }
3566
3567 if (trimmed) {
3568 waddnstr(view->win, commit->author, authorlen);
3569 if (type != LINE_CURSOR)
3570 wattrset(view->win, get_line_attr(LINE_MAIN_DELIM));
3571 waddch(view->win, '~');
3572 } else {
3573 waddstr(view->win, commit->author);
3574 }
3575
3576 col += AUTHOR_COLS;
3577 if (type != LINE_CURSOR)
3578 wattrset(view->win, A_NORMAL);
3579
3580 if (opt_rev_graph && commit->graph_size) {
3581 size_t i;
3582
3583 wmove(view->win, lineno, col);
3584 /* Using waddch() instead of waddnstr() ensures that
3585 * they'll be rendered correctly for the cursor line. */
3586 for (i = 0; i < commit->graph_size; i++)
3587 waddch(view->win, commit->graph[i]);
3588
8716b9ed 3589 waddch(view->win, ' ');
ccc33449
JF		 3590 col += commit->graph_size + 1;
3591 }
3592
3593 wmove(view->win, lineno, col);
3594
3595 if (commit->refs) {
3596 size_t i = 0;
3597
3598 do {
3599 if (type == LINE_CURSOR)
3600 ;
3601 else if (commit->refs[i]->tag)
3602 wattrset(view->win, get_line_attr(LINE_MAIN_TAG));
e15ec88e
JF		 3603 else if (commit->refs[i]->remote)
3604 wattrset(view->win, get_line_attr(LINE_MAIN_REMOTE));
ccc33449
JF		 3605 else
3606 wattrset(view->win, get_line_attr(LINE_MAIN_REF));
3607 waddstr(view->win, "[");
3608 waddstr(view->win, commit->refs[i]->name);
3609 waddstr(view->win, "]");
3610 if (type != LINE_CURSOR)
3611 wattrset(view->win, A_NORMAL);
3612 waddstr(view->win, " ");
3613 col += strlen(commit->refs[i]->name) + STRING_SIZE("[] ");
3614 } while (commit->refs[i++]->next);
3615 }
3616
3617 if (type != LINE_CURSOR)
3618 wattrset(view->win, get_line_attr(type));
3619
3620 {
3621 int titlelen = strlen(commit->title);
3622
3623 if (col + titlelen > view->width)
3624 titlelen = view->width - col;
3625
3626 waddnstr(view->win, commit->title, titlelen);
3627 }
3628
3629 return TRUE;
3630}
3631
4c6fabc2 3632/* Reads git log --pretty=raw output and parses it into the commit struct. */
6b161b31 3633static bool
701e4f5d 3634main_read(struct view *view, char *line)
22f66b0a 3635{
2ce5c87c 3636 static struct rev_graph *graph = graph_stacks;
be04d936 3637 enum line_type type;
0ff3b97c 3638 struct commit *commit;
22f66b0a 3639
be04d936 3640 if (!line) {
446a5c36 3641 update_rev_graph(graph);
be04d936
JF		 3642 return TRUE;
3643 }
3644
3645 type = get_line_type(line);
0ff3b97c 3646 if (type == LINE_COMMIT) {
22f66b0a
JF		 3647 commit = calloc(1, sizeof(struct commit));
3648 if (!commit)
3649 return FALSE;
3650
0ff3b97c 3651 string_copy_rev(commit->id, line + STRING_SIZE("commit "));
c34d9c9f 3652 commit->refs = get_refs(commit->id);
c65a501a 3653 graph->commit = commit;
e314c36d 3654 add_line_data(view, commit, LINE_MAIN_COMMIT);
0ff3b97c
JF		 3655 return TRUE;
3656 }
2b757533 3657
0ff3b97c
JF		 3658 if (!view->lines)
3659 return TRUE;
3660 commit = view->line[view->lines - 1].data;
3661
3662 switch (type) {
2b757533 3663 case LINE_PARENT:
0ff3b97c 3664 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
78c70acd 3665 break;
22f66b0a 3666
8855ada4 3667 case LINE_AUTHOR:
b76c2afc 3668 {
19c3ac60
JF		 3669 /* Parse author lines where the name may be empty:
3670 * author <email@address.tld> 1138474660 +0100
3671 */
4c6fabc2 3672 char *ident = line + STRING_SIZE("author ");
19c3ac60
JF		 3673 char *nameend = strchr(ident, '<');
3674 char *emailend = strchr(ident, '>');
b76c2afc 3675
0ff3b97c 3676 if (!nameend || !emailend)
fe7233c3
JF		 3677 break;
3678
c65a501a
JF		 3679 update_rev_graph(graph);
3680 graph = graph->next;
2b757533 3681
19c3ac60
JF		 3682 *nameend = *emailend = 0;
3683 ident = chomp_string(ident);
3684 if (!*ident) {
3685 ident = chomp_string(nameend + 1);
3686 if (!*ident)
3687 ident = "Unknown";
b76c2afc
JF		 3688 }
3689
739e81de 3690 string_ncopy(commit->author, ident, strlen(ident));
b76c2afc 3691
4c6fabc2 3692 /* Parse epoch and timezone */
19c3ac60
JF		 3693 if (emailend[1] == ' ') {
3694 char *secs = emailend + 2;
3695 char *zone = strchr(secs, ' ');
3696 time_t time = (time_t) atol(secs);
b76c2afc 3697
4c6fabc2 3698 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
b76c2afc
JF		 3699 long tz;
3700
3701 zone++;
3702 tz = ('0' - zone[1]) * 60 * 60 * 10;
3703 tz += ('0' - zone[2]) * 60 * 60;
3704 tz += ('0' - zone[3]) * 60;
3705 tz += ('0' - zone[4]) * 60;
3706
3707 if (zone[0] == '-')
3708 tz = -tz;
3709
3710 time -= tz;
3711 }
19c3ac60 3712
b76c2afc
JF		 3713 gmtime_r(&time, &commit->time);
3714 }
3715 break;
3716 }
78c70acd 3717 default:
2e8488b4 3718 /* Fill in the commit title if it has not already been set. */
2e8488b4
JF		 3719 if (commit->title[0])
3720 break;
3721
3722 /* Require titles to start with a non-space character at the
3723 * offset used by git log. */
9073c64a
JF		 3724 if (strncmp(line, " ", 4))
3725 break;
3726 line += 4;
3727 /* Well, if the title starts with a whitespace character,
3728 * try to be forgiving. Otherwise we end up with no title. */
3729 while (isspace(*line))
3730 line++;
3731 if (*line == '\0')
82e78006 3732 break;
9073c64a
JF		 3733 /* FIXME: More graceful handling of titles; append "..." to
3734 * shortened titles, etc. */
82e78006 3735
739e81de 3736 string_ncopy(commit->title, line, strlen(line));
22f66b0a
JF		 3737 }
3738
3739 return TRUE;
3740}
3741
586c423d
JF		 3742static enum request
3743main_request(struct view *view, enum request request, struct line *line)
b801d8b2 3744{
b3a54cba
JF		 3745 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3746
586c423d
JF		 3747 if (request == REQ_ENTER)
3748 open_view(view, REQ_VIEW_DIFF, flags);
3749 else
3750 return request;
3751
3752 return REQ_NONE;
b801d8b2
JF		 3753}
3754
4af34daa
JF		 3755static bool
3756main_grep(struct view *view, struct line *line)
3757{
3758 struct commit *commit = line->data;
3759 enum { S_TITLE, S_AUTHOR, S_DATE, S_END } state;
3760 char buf[DATE_COLS + 1];
3761 regmatch_t pmatch;
3762
3763 for (state = S_TITLE; state < S_END; state++) {
3764 char *text;
3765
3766 switch (state) {
3767 case S_TITLE: text = commit->title; break;
3768 case S_AUTHOR: text = commit->author; break;
3769 case S_DATE:
3770 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
3771 continue;
3772 text = buf;
3773 break;
3774
3775 default:
3776 return FALSE;
3777 }
3778
b77b2cb8 3779 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4af34daa
JF		 3780 return TRUE;
3781 }
3782
3783 return FALSE;
3784}
3785
d720de4b
JF		 3786static void
3787main_select(struct view *view, struct line *line)
3788{
3789 struct commit *commit = line->data;
3790
2463b4ea
JF		 3791 string_copy_rev(view->ref, commit->id);
3792 string_copy_rev(ref_commit, view->ref);
d720de4b
JF		 3793}
3794
6b161b31 3795static struct view_ops main_ops = {
6734f6b9 3796 "commit",
f098944b 3797 NULL,
6b161b31 3798 main_read,
f098944b 3799 main_draw,
586c423d 3800 main_request,
4af34daa 3801 main_grep,
d720de4b 3802 main_select,
6b161b31 3803};
2e8488b4 3804
c34d9c9f 3805
6b161b31 3806/*
10e290ee
JF		 3807 * Unicode / UTF-8 handling
3808 *
3809 * NOTE: Much of the following code for dealing with unicode is derived from
3810 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
3811 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
3812 */
3813
3814/* I've (over)annotated a lot of code snippets because I am not entirely
3815 * confident that the approach taken by this small UTF-8 interface is correct.
3816 * --jonas */
3817
3818static inline int
3819unicode_width(unsigned long c)
3820{
3821 if (c >= 0x1100 &&
3822 (c <= 0x115f /* Hangul Jamo */
3823 || c == 0x2329
3824 || c == 0x232a
3825 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
f97f4012 3826 /* CJK ... Yi */
10e290ee
JF		 3827 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
3828 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
3829 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
3830 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
3831 || (c >= 0xffe0 && c <= 0xffe6)
3832 || (c >= 0x20000 && c <= 0x2fffd)
3833 || (c >= 0x30000 && c <= 0x3fffd)))
3834 return 2;
3835
3836 return 1;
3837}
3838
3839/* Number of bytes used for encoding a UTF-8 character indexed by first byte.
3840 * Illegal bytes are set one. */
3841static const unsigned char utf8_bytes[256] = {
3842 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,
3843 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,
3844 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,
3845 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,
3846 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,
3847 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,
3848 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,
3849 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,
3850};
3851
3852/* Decode UTF-8 multi-byte representation into a unicode character. */
3853static inline unsigned long
3854utf8_to_unicode(const char *string, size_t length)
3855{
3856 unsigned long unicode;
3857
3858 switch (length) {
3859 case 1:
3860 unicode = string[0];
3861 break;
3862 case 2:
3863 unicode = (string[0] & 0x1f) << 6;
3864 unicode += (string[1] & 0x3f);
3865 break;
3866 case 3:
3867 unicode = (string[0] & 0x0f) << 12;
3868 unicode += ((string[1] & 0x3f) << 6);
3869 unicode += (string[2] & 0x3f);
3870 break;
3871 case 4:
3872 unicode = (string[0] & 0x0f) << 18;
3873 unicode += ((string[1] & 0x3f) << 12);
3874 unicode += ((string[2] & 0x3f) << 6);
3875 unicode += (string[3] & 0x3f);
3876 break;
3877 case 5:
3878 unicode = (string[0] & 0x0f) << 24;
3879 unicode += ((string[1] & 0x3f) << 18);
3880 unicode += ((string[2] & 0x3f) << 12);
3881 unicode += ((string[3] & 0x3f) << 6);
3882 unicode += (string[4] & 0x3f);
3883 break;
68b6e0eb 3884 case 6:
10e290ee
JF		 3885 unicode = (string[0] & 0x01) << 30;
3886 unicode += ((string[1] & 0x3f) << 24);
3887 unicode += ((string[2] & 0x3f) << 18);
3888 unicode += ((string[3] & 0x3f) << 12);
3889 unicode += ((string[4] & 0x3f) << 6);
3890 unicode += (string[5] & 0x3f);
3891 break;
3892 default:
3893 die("Invalid unicode length");
3894 }
3895
3896 /* Invalid characters could return the special 0xfffd value but NUL
3897 * should be just as good. */
3898 return unicode > 0xffff ? 0 : unicode;
3899}
3900
3901/* Calculates how much of string can be shown within the given maximum width
3902 * and sets trimmed parameter to non-zero value if all of string could not be
3903 * shown.
3904 *
3905 * Additionally, adds to coloffset how many many columns to move to align with
3906 * the expected position. Takes into account how multi-byte and double-width
3907 * characters will effect the cursor position.
3908 *
3909 * Returns the number of bytes to output from string to satisfy max_width. */
3910static size_t
3911utf8_length(const char *string, size_t max_width, int *coloffset, int *trimmed)
3912{
3913 const char *start = string;
3914 const char *end = strchr(string, '\0');
3915 size_t mbwidth = 0;
3916 size_t width = 0;
3917
3918 *trimmed = 0;
3919
3920 while (string < end) {
3921 int c = *(unsigned char *) string;
3922 unsigned char bytes = utf8_bytes[c];
3923 size_t ucwidth;
3924 unsigned long unicode;
3925
3926 if (string + bytes > end)
3927 break;
3928
3929 /* Change representation to figure out whether
3930 * it is a single- or double-width character. */
3931
3932 unicode = utf8_to_unicode(string, bytes);
3933 /* FIXME: Graceful handling of invalid unicode character. */
3934 if (!unicode)
3935 break;
3936
3937 ucwidth = unicode_width(unicode);
3938 width += ucwidth;
3939 if (width > max_width) {
3940 *trimmed = 1;
3941 break;
3942 }
3943
3944 /* The column offset collects the differences between the
3945 * number of bytes encoding a character and the number of
3946 * columns will be used for rendering said character.
3947 *
3948 * So if some character A is encoded in 2 bytes, but will be
3949 * represented on the screen using only 1 byte this will and up
3950 * adding 1 to the multi-byte column offset.
3951 *
3952 * Assumes that no double-width character can be encoding in
3953 * less than two bytes. */
3954 if (bytes > ucwidth)
3955 mbwidth += bytes - ucwidth;
3956
3957 string += bytes;
3958 }
3959
3960 *coloffset += mbwidth;
3961
3962 return string - start;
3963}
3964
3965
3966/*
6b161b31
JF		 3967 * Status management
3968 */
2e8488b4 3969
8855ada4 3970/* Whether or not the curses interface has been initialized. */
68b6e0eb 3971static bool cursed = FALSE;
8855ada4 3972
6b161b31
JF		 3973/* The status window is used for polling keystrokes. */
3974static WINDOW *status_win;
4a2909a7 3975
21be28fb
JF		 3976static bool status_empty = TRUE;
3977
2e8488b4 3978/* Update status and title window. */
4a2909a7
JF		 3979static void
3980report(const char *msg, ...)
3981{
6706b2ba 3982 struct view *view = display[current_view];
b76c2afc 3983
ab4af23e
JF		 3984 if (input_mode)
3985 return;
3986
21be28fb 3987 if (!status_empty || *msg) {
6706b2ba 3988 va_list args;
4a2909a7 3989
6706b2ba 3990 va_start(args, msg);
4b76734f 3991
6706b2ba
JF		 3992 wmove(status_win, 0, 0);
3993 if (*msg) {
3994 vwprintw(status_win, msg, args);
21be28fb 3995 status_empty = FALSE;
6706b2ba 3996 } else {
21be28fb 3997 status_empty = TRUE;
6706b2ba 3998 }
390a8262 3999 wclrtoeol(status_win);
6706b2ba 4000 wrefresh(status_win);
b801d8b2 4001
6706b2ba
JF		 4002 va_end(args);
4003 }
4004
4005 update_view_title(view);
2bee3bde 4006 update_display_cursor(view);
b801d8b2
JF		 4007}
4008
6b161b31
JF		 4009/* Controls when nodelay should be in effect when polling user input. */
4010static void
1ba2ae4b 4011set_nonblocking_input(bool loading)
b801d8b2 4012{
6706b2ba 4013 static unsigned int loading_views;
b801d8b2 4014
6706b2ba
JF		 4015 if ((loading == FALSE && loading_views-- == 1) ||
4016 (loading == TRUE && loading_views++ == 0))
1ba2ae4b 4017 nodelay(status_win, loading);
6b161b31
JF		 4018}
4019
4020static void
4021init_display(void)
4022{
4023 int x, y;
b76c2afc 4024
6908bdbd
JF		 4025 /* Initialize the curses library */
4026 if (isatty(STDIN_FILENO)) {
8855ada4 4027 cursed = !!initscr();
6908bdbd
JF		 4028 } else {
4029 /* Leave stdin and stdout alone when acting as a pager. */
4030 FILE *io = fopen("/dev/tty", "r+");
4031
e6f60674
JF		 4032 if (!io)
4033 die("Failed to open /dev/tty");
8855ada4 4034 cursed = !!newterm(NULL, io, io);
6908bdbd
JF		 4035 }
4036
8855ada4
JF		 4037 if (!cursed)
4038 die("Failed to initialize curses");
4039
2e8488b4
JF		 4040 nonl(); /* Tell curses not to do NL->CR/NL on output */
4041 cbreak(); /* Take input chars one at a time, no wait for \n */
4042 noecho(); /* Don't echo input */
b801d8b2 4043 leaveok(stdscr, TRUE);
b801d8b2
JF		 4044
4045 if (has_colors())
4046 init_colors();
4047
4048 getmaxyx(stdscr, y, x);
4049 status_win = newwin(1, 0, y - 1, 0);
4050 if (!status_win)
4051 die("Failed to create status window");
4052
4053 /* Enable keyboard mapping */
4054 keypad(status_win, TRUE);
78c70acd 4055 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6b161b31
JF		 4056}
4057
4af34daa 4058static char *
cb9e48c1 4059read_prompt(const char *prompt)
ef5404a4
JF		 4060{
4061 enum { READING, STOP, CANCEL } status = READING;
9e21ce5c 4062 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
ef5404a4
JF		 4063 int pos = 0;
4064
4065 while (status == READING) {
4066 struct view *view;
4067 int i, key;
4068
ab4af23e
JF		 4069 input_mode = TRUE;
4070
699ae55b 4071 foreach_view (view, i)
ef5404a4
JF		 4072 update_view(view);
4073
ab4af23e
JF		 4074 input_mode = FALSE;
4075
4076 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
4077 wclrtoeol(status_win);
4078
ef5404a4
JF		 4079 /* Refresh, accept single keystroke of input */
4080 key = wgetch(status_win);
4081 switch (key) {
4082 case KEY_RETURN:
4083 case KEY_ENTER:
4084 case '\n':
4085 status = pos ? STOP : CANCEL;
4086 break;
4087
4088 case KEY_BACKSPACE:
4089 if (pos > 0)
4090 pos--;
4091 else
4092 status = CANCEL;
4093 break;
4094
4095 case KEY_ESC:
4096 status = CANCEL;
4097 break;
4098
4099 case ERR:
4100 break;
4101
4102 default:
4103 if (pos >= sizeof(buf)) {
4104 report("Input string too long");
9e21ce5c 4105 return NULL;
ef5404a4
JF		 4106 }
4107
4108 if (isprint(key))
4109 buf[pos++] = (char) key;
4110 }
4111 }
4112
7a06ebdf
JF		 4113 /* Clear the status window */
4114 status_empty = FALSE;
4115 report("");
4116
4117 if (status == CANCEL)
9e21ce5c 4118 return NULL;
ef5404a4
JF		 4119
4120 buf[pos++] = 0;
ef5404a4 4121
9e21ce5c 4122 return buf;
ef5404a4 4123}
c34d9c9f
JF		 4124
4125/*
4126 * Repository references
4127 */
4128
4129static struct ref *refs;
3a91b75e 4130static size_t refs_size;
c34d9c9f 4131
1307df1a
JF		 4132/* Id <-> ref store */
4133static struct ref ***id_refs;
4134static size_t id_refs_size;
4135
c34d9c9f
JF		 4136static struct ref **
4137get_refs(char *id)
4138{
1307df1a
JF		 4139 struct ref ***tmp_id_refs;
4140 struct ref **ref_list = NULL;
4141 size_t ref_list_size = 0;
c34d9c9f
JF		 4142 size_t i;
4143
1307df1a
JF		 4144 for (i = 0; i < id_refs_size; i++)
4145 if (!strcmp(id, id_refs[i][0]->id))
4146 return id_refs[i];
4147
4148 tmp_id_refs = realloc(id_refs, (id_refs_size + 1) * sizeof(*id_refs));
4149 if (!tmp_id_refs)
4150 return NULL;
4151
4152 id_refs = tmp_id_refs;
4153
c34d9c9f
JF		 4154 for (i = 0; i < refs_size; i++) {
4155 struct ref **tmp;
4156
4157 if (strcmp(id, refs[i].id))
4158 continue;
4159
1307df1a 4160 tmp = realloc(ref_list, (ref_list_size + 1) * sizeof(*ref_list));
c34d9c9f 4161 if (!tmp) {
1307df1a
JF		 4162 if (ref_list)
4163 free(ref_list);
c34d9c9f
JF		 4164 return NULL;
4165 }
4166
1307df1a
JF		 4167 ref_list = tmp;
4168 if (ref_list_size > 0)
4169 ref_list[ref_list_size - 1]->next = 1;
4170 ref_list[ref_list_size] = &refs[i];
3af8774e
JF		 4171
4172 /* XXX: The properties of the commit chains ensures that we can
4173 * safely modify the shared ref. The repo references will
4174 * always be similar for the same id. */
1307df1a
JF		 4175 ref_list[ref_list_size]->next = 0;
4176 ref_list_size++;
c34d9c9f
JF		 4177 }
4178
1307df1a
JF		 4179 if (ref_list)
4180 id_refs[id_refs_size++] = ref_list;
4181
4182 return ref_list;
c34d9c9f
JF		 4183}
4184
4185static int
5699e0cf 4186read_ref(char *id, size_t idlen, char *name, size_t namelen)
c34d9c9f 4187{
d0cea5f9
JF		 4188 struct ref *ref;
4189 bool tag = FALSE;
e15ec88e 4190 bool remote = FALSE;
d0cea5f9 4191
8b0297ae
JF		 4192 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
4193 /* Commits referenced by tags has "^{}" appended. */
4194 if (name[namelen - 1] != '}')
4195 return OK;
4196
d0cea5f9
JF		 4197 while (namelen > 0 && name[namelen] != '^')
4198 namelen--;
c34d9c9f 4199
d0cea5f9 4200 tag = TRUE;
8b0297ae
JF		 4201 namelen -= STRING_SIZE("refs/tags/");
4202 name += STRING_SIZE("refs/tags/");
c34d9c9f 4203
e15ec88e
JF		 4204 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
4205 remote = TRUE;
4206 namelen -= STRING_SIZE("refs/remotes/");
4207 name += STRING_SIZE("refs/remotes/");
4208
d0cea5f9 4209 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
8b0297ae
JF		 4210 namelen -= STRING_SIZE("refs/heads/");
4211 name += STRING_SIZE("refs/heads/");
c34d9c9f 4212
d0cea5f9
JF		 4213 } else if (!strcmp(name, "HEAD")) {
4214 return OK;
4215 }
6706b2ba 4216
d0cea5f9
JF		 4217 refs = realloc(refs, sizeof(*refs) * (refs_size + 1));
4218 if (!refs)
4219 return ERR;
c34d9c9f 4220
d0cea5f9 4221 ref = &refs[refs_size++];
8b0297ae 4222 ref->name = malloc(namelen + 1);
d0cea5f9
JF		 4223 if (!ref->name)
4224 return ERR;
3af8774e 4225
8b0297ae
JF		 4226 strncpy(ref->name, name, namelen);
4227 ref->name[namelen] = 0;
d0cea5f9 4228 ref->tag = tag;
e15ec88e 4229 ref->remote = remote;
2463b4ea 4230 string_copy_rev(ref->id, id);
3af8774e 4231
d0cea5f9
JF		 4232 return OK;
4233}
c34d9c9f 4234
d0cea5f9
JF		 4235static int
4236load_refs(void)
4237{
4238 const char *cmd_env = getenv("TIG_LS_REMOTE");
4239 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
c34d9c9f 4240
4a63c884 4241 return read_properties(popen(cmd, "r"), "\t", read_ref);
d0cea5f9 4242}
c34d9c9f 4243
d0cea5f9 4244static int
5699e0cf 4245read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
d0cea5f9 4246{
22913179 4247 if (!strcmp(name, "i18n.commitencoding"))
739e81de 4248 string_ncopy(opt_encoding, value, valuelen);
c34d9c9f 4249
0cea0d43
JF		 4250 if (!strcmp(name, "core.editor"))
4251 string_ncopy(opt_editor, value, valuelen);
4252
c34d9c9f
JF		 4253 return OK;
4254}
4255
4670cf89 4256static int
14c778a6 4257load_repo_config(void)
4670cf89 4258{
66749723 4259 return read_properties(popen("git repo-config --list", "r"),
14c778a6 4260 "=", read_repo_config_option);
d0cea5f9
JF		 4261}
4262
4263static int
5699e0cf 4264read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
91c5d983 4265{
810f0078
JF		 4266 if (!opt_git_dir[0])
4267 string_ncopy(opt_git_dir, name, namelen);
4268 else
739e81de 4269 string_ncopy(opt_cdup, name, namelen);
91c5d983
JF		 4270 return OK;
4271}
4272
810f0078
JF		 4273/* XXX: The line outputted by "--show-cdup" can be empty so the option
4274 * must be the last one! */
91c5d983
JF		 4275static int
4276load_repo_info(void)
4277{
e0f50df0 4278 return read_properties(popen("git rev-parse --git-dir --show-cdup 2>/dev/null", "r"),
91c5d983
JF		 4279 "=", read_repo_info);
4280}
4281
4282static int
4a63c884 4283read_properties(FILE *pipe, const char *separators,
5699e0cf 4284 int (*read_property)(char *, size_t, char *, size_t))
d0cea5f9 4285{
4670cf89
JF		 4286 char buffer[BUFSIZ];
4287 char *name;
d0cea5f9 4288 int state = OK;
4670cf89
JF		 4289
4290 if (!pipe)
4291 return ERR;
4292
d0cea5f9 4293 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
4a63c884
JF		 4294 char *value;
4295 size_t namelen;
4296 size_t valuelen;
4670cf89 4297
4a63c884
JF		 4298 name = chomp_string(name);
4299 namelen = strcspn(name, separators);
4300
4301 if (name[namelen]) {
4302 name[namelen] = 0;
4303 value = chomp_string(name + namelen + 1);
d0cea5f9 4304 valuelen = strlen(value);
4670cf89 4305
d0cea5f9 4306 } else {
d0cea5f9
JF		 4307 value = "";
4308 valuelen = 0;
4670cf89 4309 }
d0cea5f9 4310
3c3801c2 4311 state = read_property(name, namelen, value, valuelen);
4670cf89
JF		 4312 }
4313
d0cea5f9
JF		 4314 if (state != ERR && ferror(pipe))
4315 state = ERR;
4670cf89
JF		 4316
4317 pclose(pipe);
4318
d0cea5f9 4319 return state;
4670cf89
JF		 4320}
4321
d0cea5f9 4322
6b161b31
JF		 4323/*
4324 * Main
4325 */
4326
b5c9e67f 4327static void __NORETURN
6b161b31
JF		 4328quit(int sig)
4329{
8855ada4
JF		 4330 /* XXX: Restore tty modes and let the OS cleanup the rest! */
4331 if (cursed)
4332 endwin();
6b161b31
JF		 4333 exit(0);
4334}
4335
c6704a4e
JF		 4336static void __NORETURN
4337die(const char *err, ...)
6b161b31
JF		 4338{
4339 va_list args;
4340
4341 endwin();
4342
4343 va_start(args, err);
4344 fputs("tig: ", stderr);
4345 vfprintf(stderr, err, args);
4346 fputs("\n", stderr);
4347 va_end(args);
4348
4349 exit(1);
4350}
4351
4352int
4353main(int argc, char *argv[])
4354{
1ba2ae4b 4355 struct view *view;
6b161b31 4356 enum request request;
1ba2ae4b 4357 size_t i;
6b161b31
JF		 4358
4359 signal(SIGINT, quit);
4360
6b68fd24 4361 if (setlocale(LC_ALL, "")) {
739e81de
JF		 4362 char *codeset = nl_langinfo(CODESET);
4363
4364 string_ncopy(opt_codeset, codeset, strlen(codeset));
6b68fd24
JF		 4365 }
4366
e0f50df0
JF		 4367 if (load_repo_info() == ERR)
4368 die("Failed to load repo info.");
4369
4370 /* Require a git repository unless when running in pager mode. */
4371 if (!opt_git_dir[0])
4372 die("Not a git repository");
4373
660e09ad
JF		 4374 if (load_options() == ERR)
4375 die("Failed to load user config.");
4376
4377 /* Load the repo config file so options can be overwritten from
739e81de 4378 * the command line. */
14c778a6 4379 if (load_repo_config() == ERR)
afdc35b3 4380 die("Failed to load repo config.");
91c5d983 4381
8855ada4 4382 if (!parse_options(argc, argv))
6b161b31
JF		 4383 return 0;
4384
6b68fd24
JF		 4385 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
4386 opt_iconv = iconv_open(opt_codeset, opt_encoding);
20f4b4a3 4387 if (opt_iconv == ICONV_NONE)
6b68fd24
JF		 4388 die("Failed to initialize character set conversion");
4389 }
4390
c34d9c9f
JF		 4391 if (load_refs() == ERR)
4392 die("Failed to load refs.");
4393
1ba2ae4b
JF		 4394 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
4395 view->cmd_env = getenv(view->cmd_env);
4396
6b161b31
JF		 4397 request = opt_request;
4398
4399 init_display();
b801d8b2
JF		 4400
4401 while (view_driver(display[current_view], request)) {
6b161b31 4402 int key;
b801d8b2
JF		 4403 int i;
4404
699ae55b 4405 foreach_view (view, i)
6b161b31 4406 update_view(view);
b801d8b2
JF		 4407
4408 /* Refresh, accept single keystroke of input */
6b161b31 4409 key = wgetch(status_win);
04e2b7b2 4410
cf4d82e6
JF		 4411 /* wgetch() with nodelay() enabled returns ERR when there's no
4412 * input. */
4413 if (key == ERR) {
4414 request = REQ_NONE;
8b534a13 4415 continue;
cf4d82e6 4416 }
04e2b7b2
JF		 4417
4418 request = get_keybinding(display[current_view]->keymap, key);
03a93dbb 4419
6706b2ba 4420 /* Some low-level request handling. This keeps access to
fac7db6c
JF		 4421 * status_win restricted. */
4422 switch (request) {
4423 case REQ_PROMPT:
9e21ce5c
JF		 4424 {
4425 char *cmd = read_prompt(":");
4426
4427 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
4428 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
4429 opt_request = REQ_VIEW_DIFF;
4430 } else {
4431 opt_request = REQ_VIEW_PAGER;
4432 }
4433 break;
4434 }
fac7db6c 4435
1d754561 4436 request = REQ_NONE;
9e21ce5c
JF		 4437 break;
4438 }
4af34daa
JF		 4439 case REQ_SEARCH:
4440 case REQ_SEARCH_BACK:
4441 {
4442 const char *prompt = request == REQ_SEARCH
4443 ? "/" : "?";
4444 char *search = read_prompt(prompt);
4445
4446 if (search)
739e81de 4447 string_ncopy(opt_search, search, strlen(search));
4af34daa
JF		 4448 else
4449 request = REQ_NONE;
4450 break;
4451 }
fac7db6c
JF		 4452 case REQ_SCREEN_RESIZE:
4453 {
4454 int height, width;
4455
4456 getmaxyx(stdscr, height, width);
4457
4458 /* Resize the status view and let the view driver take
4459 * care of resizing the displayed views. */
4460 wresize(status_win, 1, width);
4461 mvwin(status_win, height - 1, 0);
4462 wrefresh(status_win);
4463 break;
4464 }
4465 default:
4466 break;
03a93dbb 4467 }
b801d8b2
JF		 4468 }
4469
4470 quit(0);
4471
4472 return 0;
4473}
Full-screen terminal Git browser.