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