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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 #ifdef HAVE_NCURSESW_NCURSES_H
49 #include <ncursesw/ncurses.h>
50 #else
51 #ifdef HAVE_NCURSES_NCURSES_H
52 #include <ncurses/ncurses.h>
53 #else
54 #include <ncurses.h>
55 #endif
56 #endif
58 #if __GNUC__ >= 3
59 #define __NORETURN __attribute__((__noreturn__))
60 #else
61 #define __NORETURN
62 #endif
64 static void __NORETURN die(const char *err, ...);
65 static void warn(const char *msg, ...);
66 static void report(const char *msg, ...);
67 static int read_properties(FILE *pipe, const char *separators, int (*read)(char *, size_t, char *, size_t));
68 static void set_nonblocking_input(bool loading);
69 static size_t utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve);
70 static bool prompt_yesno(const char *prompt);
71 static int load_refs(void);
73 #define ABS(x) ((x) >= 0 ? (x) : -(x))
74 #define MIN(x, y) ((x) < (y) ? (x) : (y))
76 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
77 #define STRING_SIZE(x) (sizeof(x) - 1)
79 #define SIZEOF_STR 1024 /* Default string size. */
80 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
81 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
82 #define SIZEOF_ARG 32 /* Default argument array size. */
84 /* Revision graph */
86 #define REVGRAPH_INIT 'I'
87 #define REVGRAPH_MERGE 'M'
88 #define REVGRAPH_BRANCH '+'
89 #define REVGRAPH_COMMIT '*'
90 #define REVGRAPH_BOUND '^'
92 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
94 /* This color name can be used to refer to the default term colors. */
95 #define COLOR_DEFAULT (-1)
97 #define ICONV_NONE ((iconv_t) -1)
98 #ifndef ICONV_CONST
99 #define ICONV_CONST /* nothing */
100 #endif
102 /* The format and size of the date column in the main view. */
103 #define DATE_FORMAT "%Y-%m-%d %H:%M"
104 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
106 #define AUTHOR_COLS 20
107 #define ID_COLS 8
109 /* The default interval between line numbers. */
110 #define NUMBER_INTERVAL 5
112 #define TAB_SIZE 8
114 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
116 #define NULL_ID "0000000000000000000000000000000000000000"
118 #ifndef GIT_CONFIG
119 #define GIT_CONFIG "config"
120 #endif
122 #define TIG_LS_REMOTE \
123 "git ls-remote . 2>/dev/null"
125 #define TIG_DIFF_CMD \
126 "git show --pretty=fuller --no-color --root --patch-with-stat --find-copies-harder -C %s 2>/dev/null"
128 #define TIG_LOG_CMD \
129 "git log --no-color --cc --stat -n100 %s 2>/dev/null"
131 #define TIG_MAIN_BASE \
132 "git log --no-color --pretty=raw --parents --topo-order"
134 #define TIG_MAIN_CMD \
135 TIG_MAIN_BASE " %s 2>/dev/null"
137 #define TIG_TREE_CMD \
138 "git ls-tree %s %s"
140 #define TIG_BLOB_CMD \
141 "git cat-file blob %s"
143 /* XXX: Needs to be defined to the empty string. */
144 #define TIG_HELP_CMD ""
145 #define TIG_PAGER_CMD ""
146 #define TIG_STATUS_CMD ""
147 #define TIG_STAGE_CMD ""
148 #define TIG_BLAME_CMD ""
150 /* Some ascii-shorthands fitted into the ncurses namespace. */
151 #define KEY_TAB '\t'
152 #define KEY_RETURN '\r'
153 #define KEY_ESC 27
156 struct ref {
157 char *name; /* Ref name; tag or head names are shortened. */
158 char id[SIZEOF_REV]; /* Commit SHA1 ID */
159 unsigned int head:1; /* Is it the current HEAD? */
160 unsigned int tag:1; /* Is it a tag? */
161 unsigned int ltag:1; /* If so, is the tag local? */
162 unsigned int remote:1; /* Is it a remote ref? */
163 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
164 unsigned int next:1; /* For ref lists: are there more refs? */
165 };
167 static struct ref **get_refs(const char *id);
169 struct int_map {
170 const char *name;
171 int namelen;
172 int value;
173 };
175 static int
176 set_from_int_map(struct int_map *map, size_t map_size,
177 int *value, const char *name, int namelen)
178 {
180 int i;
182 for (i = 0; i < map_size; i++)
183 if (namelen == map[i].namelen &&
184 !strncasecmp(name, map[i].name, namelen)) {
185 *value = map[i].value;
186 return OK;
187 }
189 return ERR;
190 }
193 /*
194 * String helpers
195 */
197 static inline void
198 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
199 {
200 if (srclen > dstlen - 1)
201 srclen = dstlen - 1;
203 strncpy(dst, src, srclen);
204 dst[srclen] = 0;
205 }
207 /* Shorthands for safely copying into a fixed buffer. */
209 #define string_copy(dst, src) \
210 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
212 #define string_ncopy(dst, src, srclen) \
213 string_ncopy_do(dst, sizeof(dst), src, srclen)
215 #define string_copy_rev(dst, src) \
216 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
218 #define string_add(dst, from, src) \
219 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
221 static char *
222 chomp_string(char *name)
223 {
224 int namelen;
226 while (isspace(*name))
227 name++;
229 namelen = strlen(name) - 1;
230 while (namelen > 0 && isspace(name[namelen]))
231 name[namelen--] = 0;
233 return name;
234 }
236 static bool
237 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
238 {
239 va_list args;
240 size_t pos = bufpos ? *bufpos : 0;
242 va_start(args, fmt);
243 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
244 va_end(args);
246 if (bufpos)
247 *bufpos = pos;
249 return pos >= bufsize ? FALSE : TRUE;
250 }
252 #define string_format(buf, fmt, args...) \
253 string_nformat(buf, sizeof(buf), NULL, fmt, args)
255 #define string_format_from(buf, from, fmt, args...) \
256 string_nformat(buf, sizeof(buf), from, fmt, args)
258 static int
259 string_enum_compare(const char *str1, const char *str2, int len)
260 {
261 size_t i;
263 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
265 /* Diff-Header == DIFF_HEADER */
266 for (i = 0; i < len; i++) {
267 if (toupper(str1[i]) == toupper(str2[i]))
268 continue;
270 if (string_enum_sep(str1[i]) &&
271 string_enum_sep(str2[i]))
272 continue;
274 return str1[i] - str2[i];
275 }
277 return 0;
278 }
280 /* Shell quoting
281 *
282 * NOTE: The following is a slightly modified copy of the git project's shell
283 * quoting routines found in the quote.c file.
284 *
285 * Help to copy the thing properly quoted for the shell safety. any single
286 * quote is replaced with '\'', any exclamation point is replaced with '\!',
287 * and the whole thing is enclosed in a
288 *
289 * E.g.
290 * original sq_quote result
291 * name ==> name ==> 'name'
292 * a b ==> a b ==> 'a b'
293 * a'b ==> a'\''b ==> 'a'\''b'
294 * a!b ==> a'\!'b ==> 'a'\!'b'
295 */
297 static size_t
298 sq_quote(char buf[SIZEOF_STR], size_t bufsize, const char *src)
299 {
300 char c;
302 #define BUFPUT(x) do { if (bufsize < SIZEOF_STR) buf[bufsize++] = (x); } while (0)
304 BUFPUT('\'');
305 while ((c = *src++)) {
306 if (c == '\'' || c == '!') {
307 BUFPUT('\'');
308 BUFPUT('\\');
309 BUFPUT(c);
310 BUFPUT('\'');
311 } else {
312 BUFPUT(c);
313 }
314 }
315 BUFPUT('\'');
317 if (bufsize < SIZEOF_STR)
318 buf[bufsize] = 0;
320 return bufsize;
321 }
324 /*
325 * User requests
326 */
328 #define REQ_INFO \
329 /* XXX: Keep the view request first and in sync with views[]. */ \
330 REQ_GROUP("View switching") \
331 REQ_(VIEW_MAIN, "Show main view"), \
332 REQ_(VIEW_DIFF, "Show diff view"), \
333 REQ_(VIEW_LOG, "Show log view"), \
334 REQ_(VIEW_TREE, "Show tree view"), \
335 REQ_(VIEW_BLOB, "Show blob view"), \
336 REQ_(VIEW_BLAME, "Show blame view"), \
337 REQ_(VIEW_HELP, "Show help page"), \
338 REQ_(VIEW_PAGER, "Show pager view"), \
339 REQ_(VIEW_STATUS, "Show status view"), \
340 REQ_(VIEW_STAGE, "Show stage view"), \
341 \
342 REQ_GROUP("View manipulation") \
343 REQ_(ENTER, "Enter current line and scroll"), \
344 REQ_(NEXT, "Move to next"), \
345 REQ_(PREVIOUS, "Move to previous"), \
346 REQ_(VIEW_NEXT, "Move focus to next view"), \
347 REQ_(REFRESH, "Reload and refresh"), \
348 REQ_(MAXIMIZE, "Maximize the current view"), \
349 REQ_(VIEW_CLOSE, "Close the current view"), \
350 REQ_(QUIT, "Close all views and quit"), \
351 \
352 REQ_GROUP("View specific requests") \
353 REQ_(STATUS_UPDATE, "Update file status"), \
354 REQ_(STATUS_REVERT, "Revert file changes"), \
355 REQ_(STATUS_MERGE, "Merge file using external tool"), \
356 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
357 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
358 \
359 REQ_GROUP("Cursor navigation") \
360 REQ_(MOVE_UP, "Move cursor one line up"), \
361 REQ_(MOVE_DOWN, "Move cursor one line down"), \
362 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
363 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
364 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
365 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
366 \
367 REQ_GROUP("Scrolling") \
368 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
369 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
370 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
371 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
372 \
373 REQ_GROUP("Searching") \
374 REQ_(SEARCH, "Search the view"), \
375 REQ_(SEARCH_BACK, "Search backwards in the view"), \
376 REQ_(FIND_NEXT, "Find next search match"), \
377 REQ_(FIND_PREV, "Find previous search match"), \
378 \
379 REQ_GROUP("Option manipulation") \
380 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
381 REQ_(TOGGLE_DATE, "Toggle date display"), \
382 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
383 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
384 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
385 \
386 REQ_GROUP("Misc") \
387 REQ_(PROMPT, "Bring up the prompt"), \
388 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
389 REQ_(SCREEN_RESIZE, "Resize the screen"), \
390 REQ_(SHOW_VERSION, "Show version information"), \
391 REQ_(STOP_LOADING, "Stop all loading views"), \
392 REQ_(EDIT, "Open in editor"), \
393 REQ_(NONE, "Do nothing")
396 /* User action requests. */
397 enum request {
398 #define REQ_GROUP(help)
399 #define REQ_(req, help) REQ_##req
401 /* Offset all requests to avoid conflicts with ncurses getch values. */
402 REQ_OFFSET = KEY_MAX + 1,
403 REQ_INFO
405 #undef REQ_GROUP
406 #undef REQ_
407 };
409 struct request_info {
410 enum request request;
411 const char *name;
412 int namelen;
413 const char *help;
414 };
416 static struct request_info req_info[] = {
417 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
418 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
419 REQ_INFO
420 #undef REQ_GROUP
421 #undef REQ_
422 };
424 static enum request
425 get_request(const char *name)
426 {
427 int namelen = strlen(name);
428 int i;
430 for (i = 0; i < ARRAY_SIZE(req_info); i++)
431 if (req_info[i].namelen == namelen &&
432 !string_enum_compare(req_info[i].name, name, namelen))
433 return req_info[i].request;
435 return REQ_NONE;
436 }
439 /*
440 * Options
441 */
443 static const char usage[] =
444 "tig " TIG_VERSION " (" __DATE__ ")\n"
445 "\n"
446 "Usage: tig [options] [revs] [--] [paths]\n"
447 " or: tig show [options] [revs] [--] [paths]\n"
448 " or: tig blame [rev] path\n"
449 " or: tig status\n"
450 " or: tig < [git command output]\n"
451 "\n"
452 "Options:\n"
453 " -v, --version Show version and exit\n"
454 " -h, --help Show help message and exit";
456 /* Option and state variables. */
457 static bool opt_date = TRUE;
458 static bool opt_author = TRUE;
459 static bool opt_line_number = FALSE;
460 static bool opt_line_graphics = TRUE;
461 static bool opt_rev_graph = FALSE;
462 static bool opt_show_refs = TRUE;
463 static int opt_num_interval = NUMBER_INTERVAL;
464 static int opt_tab_size = TAB_SIZE;
465 static int opt_author_cols = AUTHOR_COLS-1;
466 static char opt_cmd[SIZEOF_STR] = "";
467 static char opt_path[SIZEOF_STR] = "";
468 static char opt_file[SIZEOF_STR] = "";
469 static char opt_ref[SIZEOF_REF] = "";
470 static char opt_head[SIZEOF_REF] = "";
471 static char opt_remote[SIZEOF_REF] = "";
472 static bool opt_no_head = TRUE;
473 static FILE *opt_pipe = NULL;
474 static char opt_encoding[20] = "UTF-8";
475 static bool opt_utf8 = TRUE;
476 static char opt_codeset[20] = "UTF-8";
477 static iconv_t opt_iconv = ICONV_NONE;
478 static char opt_search[SIZEOF_STR] = "";
479 static char opt_cdup[SIZEOF_STR] = "";
480 static char opt_git_dir[SIZEOF_STR] = "";
481 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
482 static char opt_editor[SIZEOF_STR] = "";
484 static enum request
485 parse_options(int argc, const char *argv[])
486 {
487 enum request request = REQ_VIEW_MAIN;
488 size_t buf_size;
489 const char *subcommand;
490 bool seen_dashdash = FALSE;
491 int i;
493 if (!isatty(STDIN_FILENO)) {
494 opt_pipe = stdin;
495 return REQ_VIEW_PAGER;
496 }
498 if (argc <= 1)
499 return REQ_VIEW_MAIN;
501 subcommand = argv[1];
502 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
503 if (!strcmp(subcommand, "-S"))
504 warn("`-S' has been deprecated; use `tig status' instead");
505 if (argc > 2)
506 warn("ignoring arguments after `%s'", subcommand);
507 return REQ_VIEW_STATUS;
509 } else if (!strcmp(subcommand, "blame")) {
510 if (argc <= 2 || argc > 4)
511 die("invalid number of options to blame\n\n%s", usage);
513 i = 2;
514 if (argc == 4) {
515 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
516 i++;
517 }
519 string_ncopy(opt_file, argv[i], strlen(argv[i]));
520 return REQ_VIEW_BLAME;
522 } else if (!strcmp(subcommand, "show")) {
523 request = REQ_VIEW_DIFF;
525 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
526 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
527 warn("`tig %s' has been deprecated", subcommand);
529 } else {
530 subcommand = NULL;
531 }
533 if (!subcommand)
534 /* XXX: This is vulnerable to the user overriding
535 * options required for the main view parser. */
536 string_copy(opt_cmd, TIG_MAIN_BASE);
537 else
538 string_format(opt_cmd, "git %s", subcommand);
540 buf_size = strlen(opt_cmd);
542 for (i = 1 + !!subcommand; i < argc; i++) {
543 const char *opt = argv[i];
545 if (seen_dashdash || !strcmp(opt, "--")) {
546 seen_dashdash = TRUE;
548 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
549 printf("tig version %s\n", TIG_VERSION);
550 return REQ_NONE;
552 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
553 printf("%s\n", usage);
554 return REQ_NONE;
555 }
557 opt_cmd[buf_size++] = ' ';
558 buf_size = sq_quote(opt_cmd, buf_size, opt);
559 if (buf_size >= sizeof(opt_cmd))
560 die("command too long");
561 }
563 opt_cmd[buf_size] = 0;
565 return request;
566 }
569 /*
570 * Line-oriented content detection.
571 */
573 #define LINE_INFO \
574 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
575 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
576 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
577 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
578 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
579 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
580 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
583 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
584 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
585 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
586 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
587 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
588 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
589 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
590 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
591 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
592 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
593 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
594 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
595 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
596 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
597 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
598 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
599 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
600 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
601 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
602 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
603 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
604 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
605 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
606 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
607 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
608 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
609 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
610 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
611 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
612 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
613 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
614 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
615 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
616 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
617 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
618 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
619 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
620 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
621 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
622 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
623 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
624 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
625 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
626 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
627 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
629 enum line_type {
630 #define LINE(type, line, fg, bg, attr) \
631 LINE_##type
632 LINE_INFO,
633 LINE_NONE
634 #undef LINE
635 };
637 struct line_info {
638 const char *name; /* Option name. */
639 int namelen; /* Size of option name. */
640 const char *line; /* The start of line to match. */
641 int linelen; /* Size of string to match. */
642 int fg, bg, attr; /* Color and text attributes for the lines. */
643 };
645 static struct line_info line_info[] = {
646 #define LINE(type, line, fg, bg, attr) \
647 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
648 LINE_INFO
649 #undef LINE
650 };
652 static enum line_type
653 get_line_type(const char *line)
654 {
655 int linelen = strlen(line);
656 enum line_type type;
658 for (type = 0; type < ARRAY_SIZE(line_info); type++)
659 /* Case insensitive search matches Signed-off-by lines better. */
660 if (linelen >= line_info[type].linelen &&
661 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
662 return type;
664 return LINE_DEFAULT;
665 }
667 static inline int
668 get_line_attr(enum line_type type)
669 {
670 assert(type < ARRAY_SIZE(line_info));
671 return COLOR_PAIR(type) | line_info[type].attr;
672 }
674 static struct line_info *
675 get_line_info(const char *name)
676 {
677 size_t namelen = strlen(name);
678 enum line_type type;
680 for (type = 0; type < ARRAY_SIZE(line_info); type++)
681 if (namelen == line_info[type].namelen &&
682 !string_enum_compare(line_info[type].name, name, namelen))
683 return &line_info[type];
685 return NULL;
686 }
688 static void
689 init_colors(void)
690 {
691 int default_bg = line_info[LINE_DEFAULT].bg;
692 int default_fg = line_info[LINE_DEFAULT].fg;
693 enum line_type type;
695 start_color();
697 if (assume_default_colors(default_fg, default_bg) == ERR) {
698 default_bg = COLOR_BLACK;
699 default_fg = COLOR_WHITE;
700 }
702 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
703 struct line_info *info = &line_info[type];
704 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
705 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
707 init_pair(type, fg, bg);
708 }
709 }
711 struct line {
712 enum line_type type;
714 /* State flags */
715 unsigned int selected:1;
716 unsigned int dirty:1;
718 void *data; /* User data */
719 };
722 /*
723 * Keys
724 */
726 struct keybinding {
727 int alias;
728 enum request request;
729 struct keybinding *next;
730 };
732 static struct keybinding default_keybindings[] = {
733 /* View switching */
734 { 'm', REQ_VIEW_MAIN },
735 { 'd', REQ_VIEW_DIFF },
736 { 'l', REQ_VIEW_LOG },
737 { 't', REQ_VIEW_TREE },
738 { 'f', REQ_VIEW_BLOB },
739 { 'B', REQ_VIEW_BLAME },
740 { 'p', REQ_VIEW_PAGER },
741 { 'h', REQ_VIEW_HELP },
742 { 'S', REQ_VIEW_STATUS },
743 { 'c', REQ_VIEW_STAGE },
745 /* View manipulation */
746 { 'q', REQ_VIEW_CLOSE },
747 { KEY_TAB, REQ_VIEW_NEXT },
748 { KEY_RETURN, REQ_ENTER },
749 { KEY_UP, REQ_PREVIOUS },
750 { KEY_DOWN, REQ_NEXT },
751 { 'R', REQ_REFRESH },
752 { KEY_F(5), REQ_REFRESH },
753 { 'O', REQ_MAXIMIZE },
755 /* Cursor navigation */
756 { 'k', REQ_MOVE_UP },
757 { 'j', REQ_MOVE_DOWN },
758 { KEY_HOME, REQ_MOVE_FIRST_LINE },
759 { KEY_END, REQ_MOVE_LAST_LINE },
760 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
761 { ' ', REQ_MOVE_PAGE_DOWN },
762 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
763 { 'b', REQ_MOVE_PAGE_UP },
764 { '-', REQ_MOVE_PAGE_UP },
766 /* Scrolling */
767 { KEY_IC, REQ_SCROLL_LINE_UP },
768 { KEY_DC, REQ_SCROLL_LINE_DOWN },
769 { 'w', REQ_SCROLL_PAGE_UP },
770 { 's', REQ_SCROLL_PAGE_DOWN },
772 /* Searching */
773 { '/', REQ_SEARCH },
774 { '?', REQ_SEARCH_BACK },
775 { 'n', REQ_FIND_NEXT },
776 { 'N', REQ_FIND_PREV },
778 /* Misc */
779 { 'Q', REQ_QUIT },
780 { 'z', REQ_STOP_LOADING },
781 { 'v', REQ_SHOW_VERSION },
782 { 'r', REQ_SCREEN_REDRAW },
783 { '.', REQ_TOGGLE_LINENO },
784 { 'D', REQ_TOGGLE_DATE },
785 { 'A', REQ_TOGGLE_AUTHOR },
786 { 'g', REQ_TOGGLE_REV_GRAPH },
787 { 'F', REQ_TOGGLE_REFS },
788 { ':', REQ_PROMPT },
789 { 'u', REQ_STATUS_UPDATE },
790 { '!', REQ_STATUS_REVERT },
791 { 'M', REQ_STATUS_MERGE },
792 { '@', REQ_STAGE_NEXT },
793 { ',', REQ_TREE_PARENT },
794 { 'e', REQ_EDIT },
796 /* Using the ncurses SIGWINCH handler. */
797 { KEY_RESIZE, REQ_SCREEN_RESIZE },
798 };
800 #define KEYMAP_INFO \
801 KEYMAP_(GENERIC), \
802 KEYMAP_(MAIN), \
803 KEYMAP_(DIFF), \
804 KEYMAP_(LOG), \
805 KEYMAP_(TREE), \
806 KEYMAP_(BLOB), \
807 KEYMAP_(BLAME), \
808 KEYMAP_(PAGER), \
809 KEYMAP_(HELP), \
810 KEYMAP_(STATUS), \
811 KEYMAP_(STAGE)
813 enum keymap {
814 #define KEYMAP_(name) KEYMAP_##name
815 KEYMAP_INFO
816 #undef KEYMAP_
817 };
819 static struct int_map keymap_table[] = {
820 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
821 KEYMAP_INFO
822 #undef KEYMAP_
823 };
825 #define set_keymap(map, name) \
826 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
828 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
830 static void
831 add_keybinding(enum keymap keymap, enum request request, int key)
832 {
833 struct keybinding *keybinding;
835 keybinding = calloc(1, sizeof(*keybinding));
836 if (!keybinding)
837 die("Failed to allocate keybinding");
839 keybinding->alias = key;
840 keybinding->request = request;
841 keybinding->next = keybindings[keymap];
842 keybindings[keymap] = keybinding;
843 }
845 /* Looks for a key binding first in the given map, then in the generic map, and
846 * lastly in the default keybindings. */
847 static enum request
848 get_keybinding(enum keymap keymap, int key)
849 {
850 struct keybinding *kbd;
851 int i;
853 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
854 if (kbd->alias == key)
855 return kbd->request;
857 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
858 if (kbd->alias == key)
859 return kbd->request;
861 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
862 if (default_keybindings[i].alias == key)
863 return default_keybindings[i].request;
865 return (enum request) key;
866 }
869 struct key {
870 const char *name;
871 int value;
872 };
874 static struct key key_table[] = {
875 { "Enter", KEY_RETURN },
876 { "Space", ' ' },
877 { "Backspace", KEY_BACKSPACE },
878 { "Tab", KEY_TAB },
879 { "Escape", KEY_ESC },
880 { "Left", KEY_LEFT },
881 { "Right", KEY_RIGHT },
882 { "Up", KEY_UP },
883 { "Down", KEY_DOWN },
884 { "Insert", KEY_IC },
885 { "Delete", KEY_DC },
886 { "Hash", '#' },
887 { "Home", KEY_HOME },
888 { "End", KEY_END },
889 { "PageUp", KEY_PPAGE },
890 { "PageDown", KEY_NPAGE },
891 { "F1", KEY_F(1) },
892 { "F2", KEY_F(2) },
893 { "F3", KEY_F(3) },
894 { "F4", KEY_F(4) },
895 { "F5", KEY_F(5) },
896 { "F6", KEY_F(6) },
897 { "F7", KEY_F(7) },
898 { "F8", KEY_F(8) },
899 { "F9", KEY_F(9) },
900 { "F10", KEY_F(10) },
901 { "F11", KEY_F(11) },
902 { "F12", KEY_F(12) },
903 };
905 static int
906 get_key_value(const char *name)
907 {
908 int i;
910 for (i = 0; i < ARRAY_SIZE(key_table); i++)
911 if (!strcasecmp(key_table[i].name, name))
912 return key_table[i].value;
914 if (strlen(name) == 1 && isprint(*name))
915 return (int) *name;
917 return ERR;
918 }
920 static const char *
921 get_key_name(int key_value)
922 {
923 static char key_char[] = "'X'";
924 const char *seq = NULL;
925 int key;
927 for (key = 0; key < ARRAY_SIZE(key_table); key++)
928 if (key_table[key].value == key_value)
929 seq = key_table[key].name;
931 if (seq == NULL &&
932 key_value < 127 &&
933 isprint(key_value)) {
934 key_char[1] = (char) key_value;
935 seq = key_char;
936 }
938 return seq ? seq : "(no key)";
939 }
941 static const char *
942 get_key(enum request request)
943 {
944 static char buf[BUFSIZ];
945 size_t pos = 0;
946 char *sep = "";
947 int i;
949 buf[pos] = 0;
951 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
952 struct keybinding *keybinding = &default_keybindings[i];
954 if (keybinding->request != request)
955 continue;
957 if (!string_format_from(buf, &pos, "%s%s", sep,
958 get_key_name(keybinding->alias)))
959 return "Too many keybindings!";
960 sep = ", ";
961 }
963 return buf;
964 }
966 struct run_request {
967 enum keymap keymap;
968 int key;
969 char cmd[SIZEOF_STR];
970 };
972 static struct run_request *run_request;
973 static size_t run_requests;
975 static enum request
976 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
977 {
978 struct run_request *req;
979 char cmd[SIZEOF_STR];
980 size_t bufpos;
982 for (bufpos = 0; argc > 0; argc--, argv++)
983 if (!string_format_from(cmd, &bufpos, "%s ", *argv))
984 return REQ_NONE;
986 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
987 if (!req)
988 return REQ_NONE;
990 run_request = req;
991 req = &run_request[run_requests++];
992 string_copy(req->cmd, cmd);
993 req->keymap = keymap;
994 req->key = key;
996 return REQ_NONE + run_requests;
997 }
999 static struct run_request *
1000 get_run_request(enum request request)
1001 {
1002 if (request <= REQ_NONE)
1003 return NULL;
1004 return &run_request[request - REQ_NONE - 1];
1005 }
1007 static void
1008 add_builtin_run_requests(void)
1009 {
1010 struct {
1011 enum keymap keymap;
1012 int key;
1013 const char *argv[1];
1014 } reqs[] = {
1015 { KEYMAP_MAIN, 'C', { "git cherry-pick %(commit)" } },
1016 { KEYMAP_GENERIC, 'G', { "git gc" } },
1017 };
1018 int i;
1020 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1021 enum request req;
1023 req = add_run_request(reqs[i].keymap, reqs[i].key, 1, reqs[i].argv);
1024 if (req != REQ_NONE)
1025 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1026 }
1027 }
1029 /*
1030 * User config file handling.
1031 */
1033 static struct int_map color_map[] = {
1034 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1035 COLOR_MAP(DEFAULT),
1036 COLOR_MAP(BLACK),
1037 COLOR_MAP(BLUE),
1038 COLOR_MAP(CYAN),
1039 COLOR_MAP(GREEN),
1040 COLOR_MAP(MAGENTA),
1041 COLOR_MAP(RED),
1042 COLOR_MAP(WHITE),
1043 COLOR_MAP(YELLOW),
1044 };
1046 #define set_color(color, name) \
1047 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1049 static struct int_map attr_map[] = {
1050 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1051 ATTR_MAP(NORMAL),
1052 ATTR_MAP(BLINK),
1053 ATTR_MAP(BOLD),
1054 ATTR_MAP(DIM),
1055 ATTR_MAP(REVERSE),
1056 ATTR_MAP(STANDOUT),
1057 ATTR_MAP(UNDERLINE),
1058 };
1060 #define set_attribute(attr, name) \
1061 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1063 static int config_lineno;
1064 static bool config_errors;
1065 static const char *config_msg;
1067 /* Wants: object fgcolor bgcolor [attr] */
1068 static int
1069 option_color_command(int argc, const char *argv[])
1070 {
1071 struct line_info *info;
1073 if (argc != 3 && argc != 4) {
1074 config_msg = "Wrong number of arguments given to color command";
1075 return ERR;
1076 }
1078 info = get_line_info(argv[0]);
1079 if (!info) {
1080 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1081 info = get_line_info("delimiter");
1083 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1084 info = get_line_info("date");
1086 } else {
1087 config_msg = "Unknown color name";
1088 return ERR;
1089 }
1090 }
1092 if (set_color(&info->fg, argv[1]) == ERR ||
1093 set_color(&info->bg, argv[2]) == ERR) {
1094 config_msg = "Unknown color";
1095 return ERR;
1096 }
1098 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1099 config_msg = "Unknown attribute";
1100 return ERR;
1101 }
1103 return OK;
1104 }
1106 static bool parse_bool(const char *s)
1107 {
1108 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1109 !strcmp(s, "yes")) ? TRUE : FALSE;
1110 }
1112 static int
1113 parse_int(const char *s, int default_value, int min, int max)
1114 {
1115 int value = atoi(s);
1117 return (value < min || value > max) ? default_value : value;
1118 }
1120 /* Wants: name = value */
1121 static int
1122 option_set_command(int argc, const char *argv[])
1123 {
1124 if (argc != 3) {
1125 config_msg = "Wrong number of arguments given to set command";
1126 return ERR;
1127 }
1129 if (strcmp(argv[1], "=")) {
1130 config_msg = "No value assigned";
1131 return ERR;
1132 }
1134 if (!strcmp(argv[0], "show-author")) {
1135 opt_author = parse_bool(argv[2]);
1136 return OK;
1137 }
1139 if (!strcmp(argv[0], "show-date")) {
1140 opt_date = parse_bool(argv[2]);
1141 return OK;
1142 }
1144 if (!strcmp(argv[0], "show-rev-graph")) {
1145 opt_rev_graph = parse_bool(argv[2]);
1146 return OK;
1147 }
1149 if (!strcmp(argv[0], "show-refs")) {
1150 opt_show_refs = parse_bool(argv[2]);
1151 return OK;
1152 }
1154 if (!strcmp(argv[0], "show-line-numbers")) {
1155 opt_line_number = parse_bool(argv[2]);
1156 return OK;
1157 }
1159 if (!strcmp(argv[0], "line-graphics")) {
1160 opt_line_graphics = parse_bool(argv[2]);
1161 return OK;
1162 }
1164 if (!strcmp(argv[0], "line-number-interval")) {
1165 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1166 return OK;
1167 }
1169 if (!strcmp(argv[0], "author-width")) {
1170 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1171 return OK;
1172 }
1174 if (!strcmp(argv[0], "tab-size")) {
1175 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1176 return OK;
1177 }
1179 if (!strcmp(argv[0], "commit-encoding")) {
1180 const char *arg = argv[2];
1181 int arglen = strlen(arg);
1183 switch (arg[0]) {
1184 case '"':
1185 case '\'':
1186 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1187 config_msg = "Unmatched quotation";
1188 return ERR;
1189 }
1190 arg += 1; arglen -= 2;
1191 default:
1192 string_ncopy(opt_encoding, arg, strlen(arg));
1193 return OK;
1194 }
1195 }
1197 config_msg = "Unknown variable name";
1198 return ERR;
1199 }
1201 /* Wants: mode request key */
1202 static int
1203 option_bind_command(int argc, const char *argv[])
1204 {
1205 enum request request;
1206 int keymap;
1207 int key;
1209 if (argc < 3) {
1210 config_msg = "Wrong number of arguments given to bind command";
1211 return ERR;
1212 }
1214 if (set_keymap(&keymap, argv[0]) == ERR) {
1215 config_msg = "Unknown key map";
1216 return ERR;
1217 }
1219 key = get_key_value(argv[1]);
1220 if (key == ERR) {
1221 config_msg = "Unknown key";
1222 return ERR;
1223 }
1225 request = get_request(argv[2]);
1226 if (request == REQ_NONE) {
1227 const char *obsolete[] = { "cherry-pick" };
1228 size_t namelen = strlen(argv[2]);
1229 int i;
1231 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1232 if (namelen == strlen(obsolete[i]) &&
1233 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1234 config_msg = "Obsolete request name";
1235 return ERR;
1236 }
1237 }
1238 }
1239 if (request == REQ_NONE && *argv[2]++ == '!')
1240 request = add_run_request(keymap, key, argc - 2, argv + 2);
1241 if (request == REQ_NONE) {
1242 config_msg = "Unknown request name";
1243 return ERR;
1244 }
1246 add_keybinding(keymap, request, key);
1248 return OK;
1249 }
1251 static int
1252 set_option(const char *opt, char *value)
1253 {
1254 const char *argv[SIZEOF_ARG];
1255 int valuelen;
1256 int argc = 0;
1258 /* Tokenize */
1259 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1260 argv[argc++] = value;
1261 value += valuelen;
1263 /* Nothing more to tokenize or last available token. */
1264 if (!*value || argc >= ARRAY_SIZE(argv))
1265 break;
1267 *value++ = 0;
1268 while (isspace(*value))
1269 value++;
1270 }
1272 if (!strcmp(opt, "color"))
1273 return option_color_command(argc, argv);
1275 if (!strcmp(opt, "set"))
1276 return option_set_command(argc, argv);
1278 if (!strcmp(opt, "bind"))
1279 return option_bind_command(argc, argv);
1281 config_msg = "Unknown option command";
1282 return ERR;
1283 }
1285 static int
1286 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1287 {
1288 int status = OK;
1290 config_lineno++;
1291 config_msg = "Internal error";
1293 /* Check for comment markers, since read_properties() will
1294 * only ensure opt and value are split at first " \t". */
1295 optlen = strcspn(opt, "#");
1296 if (optlen == 0)
1297 return OK;
1299 if (opt[optlen] != 0) {
1300 config_msg = "No option value";
1301 status = ERR;
1303 } else {
1304 /* Look for comment endings in the value. */
1305 size_t len = strcspn(value, "#");
1307 if (len < valuelen) {
1308 valuelen = len;
1309 value[valuelen] = 0;
1310 }
1312 status = set_option(opt, value);
1313 }
1315 if (status == ERR) {
1316 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1317 config_lineno, (int) optlen, opt, config_msg);
1318 config_errors = TRUE;
1319 }
1321 /* Always keep going if errors are encountered. */
1322 return OK;
1323 }
1325 static void
1326 load_option_file(const char *path)
1327 {
1328 FILE *file;
1330 /* It's ok that the file doesn't exist. */
1331 file = fopen(path, "r");
1332 if (!file)
1333 return;
1335 config_lineno = 0;
1336 config_errors = FALSE;
1338 if (read_properties(file, " \t", read_option) == ERR ||
1339 config_errors == TRUE)
1340 fprintf(stderr, "Errors while loading %s.\n", path);
1341 }
1343 static int
1344 load_options(void)
1345 {
1346 const char *home = getenv("HOME");
1347 const char *tigrc_user = getenv("TIGRC_USER");
1348 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1349 char buf[SIZEOF_STR];
1351 add_builtin_run_requests();
1353 if (!tigrc_system) {
1354 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1355 return ERR;
1356 tigrc_system = buf;
1357 }
1358 load_option_file(tigrc_system);
1360 if (!tigrc_user) {
1361 if (!home || !string_format(buf, "%s/.tigrc", home))
1362 return ERR;
1363 tigrc_user = buf;
1364 }
1365 load_option_file(tigrc_user);
1367 return OK;
1368 }
1371 /*
1372 * The viewer
1373 */
1375 struct view;
1376 struct view_ops;
1378 /* The display array of active views and the index of the current view. */
1379 static struct view *display[2];
1380 static unsigned int current_view;
1382 /* Reading from the prompt? */
1383 static bool input_mode = FALSE;
1385 #define foreach_displayed_view(view, i) \
1386 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1388 #define displayed_views() (display[1] != NULL ? 2 : 1)
1390 /* Current head and commit ID */
1391 static char ref_blob[SIZEOF_REF] = "";
1392 static char ref_commit[SIZEOF_REF] = "HEAD";
1393 static char ref_head[SIZEOF_REF] = "HEAD";
1395 struct view {
1396 const char *name; /* View name */
1397 const char *cmd_fmt; /* Default command line format */
1398 const char *cmd_env; /* Command line set via environment */
1399 const char *id; /* Points to either of ref_{head,commit,blob} */
1401 struct view_ops *ops; /* View operations */
1403 enum keymap keymap; /* What keymap does this view have */
1404 bool git_dir; /* Whether the view requires a git directory. */
1406 char cmd[SIZEOF_STR]; /* Command buffer */
1407 char ref[SIZEOF_REF]; /* Hovered commit reference */
1408 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1410 int height, width; /* The width and height of the main window */
1411 WINDOW *win; /* The main window */
1412 WINDOW *title; /* The title window living below the main window */
1414 /* Navigation */
1415 unsigned long offset; /* Offset of the window top */
1416 unsigned long lineno; /* Current line number */
1418 /* Searching */
1419 char grep[SIZEOF_STR]; /* Search string */
1420 regex_t *regex; /* Pre-compiled regex */
1422 /* If non-NULL, points to the view that opened this view. If this view
1423 * is closed tig will switch back to the parent view. */
1424 struct view *parent;
1426 /* Buffering */
1427 size_t lines; /* Total number of lines */
1428 struct line *line; /* Line index */
1429 size_t line_alloc; /* Total number of allocated lines */
1430 size_t line_size; /* Total number of used lines */
1431 unsigned int digits; /* Number of digits in the lines member. */
1433 /* Drawing */
1434 struct line *curline; /* Line currently being drawn. */
1435 enum line_type curtype; /* Attribute currently used for drawing. */
1436 unsigned long col; /* Column when drawing. */
1438 /* Loading */
1439 FILE *pipe;
1440 time_t start_time;
1441 };
1443 struct view_ops {
1444 /* What type of content being displayed. Used in the title bar. */
1445 const char *type;
1446 /* Open and reads in all view content. */
1447 bool (*open)(struct view *view);
1448 /* Read one line; updates view->line. */
1449 bool (*read)(struct view *view, char *data);
1450 /* Draw one line; @lineno must be < view->height. */
1451 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1452 /* Depending on view handle a special requests. */
1453 enum request (*request)(struct view *view, enum request request, struct line *line);
1454 /* Search for regex in a line. */
1455 bool (*grep)(struct view *view, struct line *line);
1456 /* Select line */
1457 void (*select)(struct view *view, struct line *line);
1458 };
1460 static struct view_ops blame_ops;
1461 static struct view_ops blob_ops;
1462 static struct view_ops help_ops;
1463 static struct view_ops log_ops;
1464 static struct view_ops main_ops;
1465 static struct view_ops pager_ops;
1466 static struct view_ops stage_ops;
1467 static struct view_ops status_ops;
1468 static struct view_ops tree_ops;
1470 #define VIEW_STR(name, cmd, env, ref, ops, map, git) \
1471 { name, cmd, #env, ref, ops, map, git }
1473 #define VIEW_(id, name, ops, git, ref) \
1474 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1477 static struct view views[] = {
1478 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1479 VIEW_(DIFF, "diff", &pager_ops, TRUE, ref_commit),
1480 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1481 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1482 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1483 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1484 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1485 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1486 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1487 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1488 };
1490 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1491 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1493 #define foreach_view(view, i) \
1494 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1496 #define view_is_displayed(view) \
1497 (view == display[0] || view == display[1])
1500 enum line_graphic {
1501 LINE_GRAPHIC_VLINE
1502 };
1504 static int line_graphics[] = {
1505 /* LINE_GRAPHIC_VLINE: */ '|'
1506 };
1508 static inline void
1509 set_view_attr(struct view *view, enum line_type type)
1510 {
1511 if (!view->curline->selected && view->curtype != type) {
1512 wattrset(view->win, get_line_attr(type));
1513 wchgat(view->win, -1, 0, type, NULL);
1514 view->curtype = type;
1515 }
1516 }
1518 static int
1519 draw_chars(struct view *view, enum line_type type, const char *string,
1520 int max_len, bool use_tilde)
1521 {
1522 int len = 0;
1523 int col = 0;
1524 int trimmed = FALSE;
1526 if (max_len <= 0)
1527 return 0;
1529 if (opt_utf8) {
1530 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1531 } else {
1532 col = len = strlen(string);
1533 if (len > max_len) {
1534 if (use_tilde) {
1535 max_len -= 1;
1536 }
1537 col = len = max_len;
1538 trimmed = TRUE;
1539 }
1540 }
1542 set_view_attr(view, type);
1543 waddnstr(view->win, string, len);
1544 if (trimmed && use_tilde) {
1545 set_view_attr(view, LINE_DELIMITER);
1546 waddch(view->win, '~');
1547 col++;
1548 }
1550 return col;
1551 }
1553 static int
1554 draw_space(struct view *view, enum line_type type, int max, int spaces)
1555 {
1556 static char space[] = " ";
1557 int col = 0;
1559 spaces = MIN(max, spaces);
1561 while (spaces > 0) {
1562 int len = MIN(spaces, sizeof(space) - 1);
1564 col += draw_chars(view, type, space, spaces, FALSE);
1565 spaces -= len;
1566 }
1568 return col;
1569 }
1571 static bool
1572 draw_lineno(struct view *view, unsigned int lineno)
1573 {
1574 char number[10];
1575 int digits3 = view->digits < 3 ? 3 : view->digits;
1576 int max_number = MIN(digits3, STRING_SIZE(number));
1577 int max = view->width - view->col;
1578 int col;
1580 if (max < max_number)
1581 max_number = max;
1583 lineno += view->offset + 1;
1584 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1585 static char fmt[] = "%1ld";
1587 if (view->digits <= 9)
1588 fmt[1] = '0' + digits3;
1590 if (!string_format(number, fmt, lineno))
1591 number[0] = 0;
1592 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1593 } else {
1594 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1595 }
1597 if (col < max) {
1598 set_view_attr(view, LINE_DEFAULT);
1599 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1600 col++;
1601 }
1603 if (col < max)
1604 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1605 view->col += col;
1607 return view->width - view->col <= 0;
1608 }
1610 static bool
1611 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1612 {
1613 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1614 return view->width - view->col <= 0;
1615 }
1617 static bool
1618 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1619 {
1620 int max = view->width - view->col;
1621 int i;
1623 if (max < size)
1624 size = max;
1626 set_view_attr(view, type);
1627 /* Using waddch() instead of waddnstr() ensures that
1628 * they'll be rendered correctly for the cursor line. */
1629 for (i = 0; i < size; i++)
1630 waddch(view->win, graphic[i]);
1632 view->col += size;
1633 if (size < max) {
1634 waddch(view->win, ' ');
1635 view->col++;
1636 }
1638 return view->width - view->col <= 0;
1639 }
1641 static bool
1642 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1643 {
1644 int max = MIN(view->width - view->col, len);
1645 int col;
1647 if (text)
1648 col = draw_chars(view, type, text, max - 1, trim);
1649 else
1650 col = draw_space(view, type, max - 1, max - 1);
1652 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1653 return view->width - view->col <= 0;
1654 }
1656 static bool
1657 draw_date(struct view *view, struct tm *time)
1658 {
1659 char buf[DATE_COLS];
1660 char *date;
1661 int timelen = 0;
1663 if (time)
1664 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1665 date = timelen ? buf : NULL;
1667 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1668 }
1670 static bool
1671 draw_view_line(struct view *view, unsigned int lineno)
1672 {
1673 struct line *line;
1674 bool selected = (view->offset + lineno == view->lineno);
1675 bool draw_ok;
1677 assert(view_is_displayed(view));
1679 if (view->offset + lineno >= view->lines)
1680 return FALSE;
1682 line = &view->line[view->offset + lineno];
1684 wmove(view->win, lineno, 0);
1685 view->col = 0;
1686 view->curline = line;
1687 view->curtype = LINE_NONE;
1688 line->selected = FALSE;
1690 if (selected) {
1691 set_view_attr(view, LINE_CURSOR);
1692 line->selected = TRUE;
1693 view->ops->select(view, line);
1694 } else if (line->selected) {
1695 wclrtoeol(view->win);
1696 }
1698 scrollok(view->win, FALSE);
1699 draw_ok = view->ops->draw(view, line, lineno);
1700 scrollok(view->win, TRUE);
1702 return draw_ok;
1703 }
1705 static void
1706 redraw_view_dirty(struct view *view)
1707 {
1708 bool dirty = FALSE;
1709 int lineno;
1711 for (lineno = 0; lineno < view->height; lineno++) {
1712 struct line *line = &view->line[view->offset + lineno];
1714 if (!line->dirty)
1715 continue;
1716 line->dirty = 0;
1717 dirty = TRUE;
1718 if (!draw_view_line(view, lineno))
1719 break;
1720 }
1722 if (!dirty)
1723 return;
1724 redrawwin(view->win);
1725 if (input_mode)
1726 wnoutrefresh(view->win);
1727 else
1728 wrefresh(view->win);
1729 }
1731 static void
1732 redraw_view_from(struct view *view, int lineno)
1733 {
1734 assert(0 <= lineno && lineno < view->height);
1736 for (; lineno < view->height; lineno++) {
1737 if (!draw_view_line(view, lineno))
1738 break;
1739 }
1741 redrawwin(view->win);
1742 if (input_mode)
1743 wnoutrefresh(view->win);
1744 else
1745 wrefresh(view->win);
1746 }
1748 static void
1749 redraw_view(struct view *view)
1750 {
1751 wclear(view->win);
1752 redraw_view_from(view, 0);
1753 }
1756 static void
1757 update_view_title(struct view *view)
1758 {
1759 char buf[SIZEOF_STR];
1760 char state[SIZEOF_STR];
1761 size_t bufpos = 0, statelen = 0;
1763 assert(view_is_displayed(view));
1765 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1766 unsigned int view_lines = view->offset + view->height;
1767 unsigned int lines = view->lines
1768 ? MIN(view_lines, view->lines) * 100 / view->lines
1769 : 0;
1771 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1772 view->ops->type,
1773 view->lineno + 1,
1774 view->lines,
1775 lines);
1777 if (view->pipe) {
1778 time_t secs = time(NULL) - view->start_time;
1780 /* Three git seconds are a long time ... */
1781 if (secs > 2)
1782 string_format_from(state, &statelen, " %lds", secs);
1783 }
1784 }
1786 string_format_from(buf, &bufpos, "[%s]", view->name);
1787 if (*view->ref && bufpos < view->width) {
1788 size_t refsize = strlen(view->ref);
1789 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1791 if (minsize < view->width)
1792 refsize = view->width - minsize + 7;
1793 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1794 }
1796 if (statelen && bufpos < view->width) {
1797 string_format_from(buf, &bufpos, " %s", state);
1798 }
1800 if (view == display[current_view])
1801 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1802 else
1803 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1805 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1806 wclrtoeol(view->title);
1807 wmove(view->title, 0, view->width - 1);
1809 if (input_mode)
1810 wnoutrefresh(view->title);
1811 else
1812 wrefresh(view->title);
1813 }
1815 static void
1816 resize_display(void)
1817 {
1818 int offset, i;
1819 struct view *base = display[0];
1820 struct view *view = display[1] ? display[1] : display[0];
1822 /* Setup window dimensions */
1824 getmaxyx(stdscr, base->height, base->width);
1826 /* Make room for the status window. */
1827 base->height -= 1;
1829 if (view != base) {
1830 /* Horizontal split. */
1831 view->width = base->width;
1832 view->height = SCALE_SPLIT_VIEW(base->height);
1833 base->height -= view->height;
1835 /* Make room for the title bar. */
1836 view->height -= 1;
1837 }
1839 /* Make room for the title bar. */
1840 base->height -= 1;
1842 offset = 0;
1844 foreach_displayed_view (view, i) {
1845 if (!view->win) {
1846 view->win = newwin(view->height, 0, offset, 0);
1847 if (!view->win)
1848 die("Failed to create %s view", view->name);
1850 scrollok(view->win, TRUE);
1852 view->title = newwin(1, 0, offset + view->height, 0);
1853 if (!view->title)
1854 die("Failed to create title window");
1856 } else {
1857 wresize(view->win, view->height, view->width);
1858 mvwin(view->win, offset, 0);
1859 mvwin(view->title, offset + view->height, 0);
1860 }
1862 offset += view->height + 1;
1863 }
1864 }
1866 static void
1867 redraw_display(void)
1868 {
1869 struct view *view;
1870 int i;
1872 foreach_displayed_view (view, i) {
1873 redraw_view(view);
1874 update_view_title(view);
1875 }
1876 }
1878 static void
1879 update_display_cursor(struct view *view)
1880 {
1881 /* Move the cursor to the right-most column of the cursor line.
1882 *
1883 * XXX: This could turn out to be a bit expensive, but it ensures that
1884 * the cursor does not jump around. */
1885 if (view->lines) {
1886 wmove(view->win, view->lineno - view->offset, view->width - 1);
1887 wrefresh(view->win);
1888 }
1889 }
1891 /*
1892 * Navigation
1893 */
1895 /* Scrolling backend */
1896 static void
1897 do_scroll_view(struct view *view, int lines)
1898 {
1899 bool redraw_current_line = FALSE;
1901 /* The rendering expects the new offset. */
1902 view->offset += lines;
1904 assert(0 <= view->offset && view->offset < view->lines);
1905 assert(lines);
1907 /* Move current line into the view. */
1908 if (view->lineno < view->offset) {
1909 view->lineno = view->offset;
1910 redraw_current_line = TRUE;
1911 } else if (view->lineno >= view->offset + view->height) {
1912 view->lineno = view->offset + view->height - 1;
1913 redraw_current_line = TRUE;
1914 }
1916 assert(view->offset <= view->lineno && view->lineno < view->lines);
1918 /* Redraw the whole screen if scrolling is pointless. */
1919 if (view->height < ABS(lines)) {
1920 redraw_view(view);
1922 } else {
1923 int line = lines > 0 ? view->height - lines : 0;
1924 int end = line + ABS(lines);
1926 wscrl(view->win, lines);
1928 for (; line < end; line++) {
1929 if (!draw_view_line(view, line))
1930 break;
1931 }
1933 if (redraw_current_line)
1934 draw_view_line(view, view->lineno - view->offset);
1935 }
1937 redrawwin(view->win);
1938 wrefresh(view->win);
1939 report("");
1940 }
1942 /* Scroll frontend */
1943 static void
1944 scroll_view(struct view *view, enum request request)
1945 {
1946 int lines = 1;
1948 assert(view_is_displayed(view));
1950 switch (request) {
1951 case REQ_SCROLL_PAGE_DOWN:
1952 lines = view->height;
1953 case REQ_SCROLL_LINE_DOWN:
1954 if (view->offset + lines > view->lines)
1955 lines = view->lines - view->offset;
1957 if (lines == 0 || view->offset + view->height >= view->lines) {
1958 report("Cannot scroll beyond the last line");
1959 return;
1960 }
1961 break;
1963 case REQ_SCROLL_PAGE_UP:
1964 lines = view->height;
1965 case REQ_SCROLL_LINE_UP:
1966 if (lines > view->offset)
1967 lines = view->offset;
1969 if (lines == 0) {
1970 report("Cannot scroll beyond the first line");
1971 return;
1972 }
1974 lines = -lines;
1975 break;
1977 default:
1978 die("request %d not handled in switch", request);
1979 }
1981 do_scroll_view(view, lines);
1982 }
1984 /* Cursor moving */
1985 static void
1986 move_view(struct view *view, enum request request)
1987 {
1988 int scroll_steps = 0;
1989 int steps;
1991 switch (request) {
1992 case REQ_MOVE_FIRST_LINE:
1993 steps = -view->lineno;
1994 break;
1996 case REQ_MOVE_LAST_LINE:
1997 steps = view->lines - view->lineno - 1;
1998 break;
2000 case REQ_MOVE_PAGE_UP:
2001 steps = view->height > view->lineno
2002 ? -view->lineno : -view->height;
2003 break;
2005 case REQ_MOVE_PAGE_DOWN:
2006 steps = view->lineno + view->height >= view->lines
2007 ? view->lines - view->lineno - 1 : view->height;
2008 break;
2010 case REQ_MOVE_UP:
2011 steps = -1;
2012 break;
2014 case REQ_MOVE_DOWN:
2015 steps = 1;
2016 break;
2018 default:
2019 die("request %d not handled in switch", request);
2020 }
2022 if (steps <= 0 && view->lineno == 0) {
2023 report("Cannot move beyond the first line");
2024 return;
2026 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2027 report("Cannot move beyond the last line");
2028 return;
2029 }
2031 /* Move the current line */
2032 view->lineno += steps;
2033 assert(0 <= view->lineno && view->lineno < view->lines);
2035 /* Check whether the view needs to be scrolled */
2036 if (view->lineno < view->offset ||
2037 view->lineno >= view->offset + view->height) {
2038 scroll_steps = steps;
2039 if (steps < 0 && -steps > view->offset) {
2040 scroll_steps = -view->offset;
2042 } else if (steps > 0) {
2043 if (view->lineno == view->lines - 1 &&
2044 view->lines > view->height) {
2045 scroll_steps = view->lines - view->offset - 1;
2046 if (scroll_steps >= view->height)
2047 scroll_steps -= view->height - 1;
2048 }
2049 }
2050 }
2052 if (!view_is_displayed(view)) {
2053 view->offset += scroll_steps;
2054 assert(0 <= view->offset && view->offset < view->lines);
2055 view->ops->select(view, &view->line[view->lineno]);
2056 return;
2057 }
2059 /* Repaint the old "current" line if we be scrolling */
2060 if (ABS(steps) < view->height)
2061 draw_view_line(view, view->lineno - steps - view->offset);
2063 if (scroll_steps) {
2064 do_scroll_view(view, scroll_steps);
2065 return;
2066 }
2068 /* Draw the current line */
2069 draw_view_line(view, view->lineno - view->offset);
2071 redrawwin(view->win);
2072 wrefresh(view->win);
2073 report("");
2074 }
2077 /*
2078 * Searching
2079 */
2081 static void search_view(struct view *view, enum request request);
2083 static bool
2084 find_next_line(struct view *view, unsigned long lineno, struct line *line)
2085 {
2086 assert(view_is_displayed(view));
2088 if (!view->ops->grep(view, line))
2089 return FALSE;
2091 if (lineno - view->offset >= view->height) {
2092 view->offset = lineno;
2093 view->lineno = lineno;
2094 redraw_view(view);
2096 } else {
2097 unsigned long old_lineno = view->lineno - view->offset;
2099 view->lineno = lineno;
2100 draw_view_line(view, old_lineno);
2102 draw_view_line(view, view->lineno - view->offset);
2103 redrawwin(view->win);
2104 wrefresh(view->win);
2105 }
2107 report("Line %ld matches '%s'", lineno + 1, view->grep);
2108 return TRUE;
2109 }
2111 static void
2112 find_next(struct view *view, enum request request)
2113 {
2114 unsigned long lineno = view->lineno;
2115 int direction;
2117 if (!*view->grep) {
2118 if (!*opt_search)
2119 report("No previous search");
2120 else
2121 search_view(view, request);
2122 return;
2123 }
2125 switch (request) {
2126 case REQ_SEARCH:
2127 case REQ_FIND_NEXT:
2128 direction = 1;
2129 break;
2131 case REQ_SEARCH_BACK:
2132 case REQ_FIND_PREV:
2133 direction = -1;
2134 break;
2136 default:
2137 return;
2138 }
2140 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2141 lineno += direction;
2143 /* Note, lineno is unsigned long so will wrap around in which case it
2144 * will become bigger than view->lines. */
2145 for (; lineno < view->lines; lineno += direction) {
2146 struct line *line = &view->line[lineno];
2148 if (find_next_line(view, lineno, line))
2149 return;
2150 }
2152 report("No match found for '%s'", view->grep);
2153 }
2155 static void
2156 search_view(struct view *view, enum request request)
2157 {
2158 int regex_err;
2160 if (view->regex) {
2161 regfree(view->regex);
2162 *view->grep = 0;
2163 } else {
2164 view->regex = calloc(1, sizeof(*view->regex));
2165 if (!view->regex)
2166 return;
2167 }
2169 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2170 if (regex_err != 0) {
2171 char buf[SIZEOF_STR] = "unknown error";
2173 regerror(regex_err, view->regex, buf, sizeof(buf));
2174 report("Search failed: %s", buf);
2175 return;
2176 }
2178 string_copy(view->grep, opt_search);
2180 find_next(view, request);
2181 }
2183 /*
2184 * Incremental updating
2185 */
2187 static void
2188 reset_view(struct view *view)
2189 {
2190 int i;
2192 for (i = 0; i < view->lines; i++)
2193 free(view->line[i].data);
2194 free(view->line);
2196 view->line = NULL;
2197 view->offset = 0;
2198 view->lines = 0;
2199 view->lineno = 0;
2200 view->line_size = 0;
2201 view->line_alloc = 0;
2202 view->vid[0] = 0;
2203 }
2205 static void
2206 end_update(struct view *view, bool force)
2207 {
2208 if (!view->pipe)
2209 return;
2210 while (!view->ops->read(view, NULL))
2211 if (!force)
2212 return;
2213 set_nonblocking_input(FALSE);
2214 if (view->pipe == stdin)
2215 fclose(view->pipe);
2216 else
2217 pclose(view->pipe);
2218 view->pipe = NULL;
2219 }
2221 static bool
2222 begin_update(struct view *view, bool refresh)
2223 {
2224 if (opt_cmd[0]) {
2225 string_copy(view->cmd, opt_cmd);
2226 opt_cmd[0] = 0;
2227 /* When running random commands, initially show the
2228 * command in the title. However, it maybe later be
2229 * overwritten if a commit line is selected. */
2230 if (view == VIEW(REQ_VIEW_PAGER))
2231 string_copy(view->ref, view->cmd);
2232 else
2233 view->ref[0] = 0;
2235 } else if (view == VIEW(REQ_VIEW_TREE)) {
2236 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2237 char path[SIZEOF_STR];
2239 if (strcmp(view->vid, view->id))
2240 opt_path[0] = path[0] = 0;
2241 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
2242 return FALSE;
2244 if (!string_format(view->cmd, format, view->id, path))
2245 return FALSE;
2247 } else if (!refresh) {
2248 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2249 const char *id = view->id;
2251 if (!string_format(view->cmd, format, id, id, id, id, id))
2252 return FALSE;
2254 /* Put the current ref_* value to the view title ref
2255 * member. This is needed by the blob view. Most other
2256 * views sets it automatically after loading because the
2257 * first line is a commit line. */
2258 string_copy_rev(view->ref, view->id);
2259 }
2261 /* Special case for the pager view. */
2262 if (opt_pipe) {
2263 view->pipe = opt_pipe;
2264 opt_pipe = NULL;
2265 } else {
2266 view->pipe = popen(view->cmd, "r");
2267 }
2269 if (!view->pipe)
2270 return FALSE;
2272 set_nonblocking_input(TRUE);
2273 reset_view(view);
2274 string_copy_rev(view->vid, view->id);
2276 view->start_time = time(NULL);
2278 return TRUE;
2279 }
2281 #define ITEM_CHUNK_SIZE 256
2282 static void *
2283 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2284 {
2285 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2286 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2288 if (mem == NULL || num_chunks != num_chunks_new) {
2289 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2290 mem = realloc(mem, *size * item_size);
2291 }
2293 return mem;
2294 }
2296 static struct line *
2297 realloc_lines(struct view *view, size_t line_size)
2298 {
2299 size_t alloc = view->line_alloc;
2300 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2301 sizeof(*view->line));
2303 if (!tmp)
2304 return NULL;
2306 view->line = tmp;
2307 view->line_alloc = alloc;
2308 view->line_size = line_size;
2309 return view->line;
2310 }
2312 static bool
2313 update_view(struct view *view)
2314 {
2315 char in_buffer[BUFSIZ];
2316 char out_buffer[BUFSIZ * 2];
2317 char *line;
2318 /* The number of lines to read. If too low it will cause too much
2319 * redrawing (and possible flickering), if too high responsiveness
2320 * will suffer. */
2321 unsigned long lines = view->height;
2322 int redraw_from = -1;
2324 if (!view->pipe)
2325 return TRUE;
2327 /* Only redraw if lines are visible. */
2328 if (view->offset + view->height >= view->lines)
2329 redraw_from = view->lines - view->offset;
2331 /* FIXME: This is probably not perfect for backgrounded views. */
2332 if (!realloc_lines(view, view->lines + lines))
2333 goto alloc_error;
2335 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
2336 size_t linelen = strlen(line);
2338 if (linelen)
2339 line[linelen - 1] = 0;
2341 if (opt_iconv != ICONV_NONE) {
2342 ICONV_CONST char *inbuf = line;
2343 size_t inlen = linelen;
2345 char *outbuf = out_buffer;
2346 size_t outlen = sizeof(out_buffer);
2348 size_t ret;
2350 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2351 if (ret != (size_t) -1) {
2352 line = out_buffer;
2353 linelen = strlen(out_buffer);
2354 }
2355 }
2357 if (!view->ops->read(view, line))
2358 goto alloc_error;
2360 if (lines-- == 1)
2361 break;
2362 }
2364 {
2365 int digits;
2367 lines = view->lines;
2368 for (digits = 0; lines; digits++)
2369 lines /= 10;
2371 /* Keep the displayed view in sync with line number scaling. */
2372 if (digits != view->digits) {
2373 view->digits = digits;
2374 redraw_from = 0;
2375 }
2376 }
2378 if (!view_is_displayed(view))
2379 goto check_pipe;
2381 if (view == VIEW(REQ_VIEW_TREE)) {
2382 /* Clear the view and redraw everything since the tree sorting
2383 * might have rearranged things. */
2384 redraw_view(view);
2386 } else if (redraw_from >= 0) {
2387 /* If this is an incremental update, redraw the previous line
2388 * since for commits some members could have changed when
2389 * loading the main view. */
2390 if (redraw_from > 0)
2391 redraw_from--;
2393 /* Since revision graph visualization requires knowledge
2394 * about the parent commit, it causes a further one-off
2395 * needed to be redrawn for incremental updates. */
2396 if (redraw_from > 0 && opt_rev_graph)
2397 redraw_from--;
2399 /* Incrementally draw avoids flickering. */
2400 redraw_view_from(view, redraw_from);
2401 }
2403 if (view == VIEW(REQ_VIEW_BLAME))
2404 redraw_view_dirty(view);
2406 /* Update the title _after_ the redraw so that if the redraw picks up a
2407 * commit reference in view->ref it'll be available here. */
2408 update_view_title(view);
2410 check_pipe:
2411 if (ferror(view->pipe) && errno != 0) {
2412 report("Failed to read: %s", strerror(errno));
2413 end_update(view, TRUE);
2415 } else if (feof(view->pipe)) {
2416 report("");
2417 end_update(view, FALSE);
2418 }
2420 return TRUE;
2422 alloc_error:
2423 report("Allocation failure");
2424 end_update(view, TRUE);
2425 return FALSE;
2426 }
2428 static struct line *
2429 add_line_data(struct view *view, void *data, enum line_type type)
2430 {
2431 struct line *line = &view->line[view->lines++];
2433 memset(line, 0, sizeof(*line));
2434 line->type = type;
2435 line->data = data;
2437 return line;
2438 }
2440 static struct line *
2441 add_line_text(struct view *view, const char *text, enum line_type type)
2442 {
2443 char *data = text ? strdup(text) : NULL;
2445 return data ? add_line_data(view, data, type) : NULL;
2446 }
2449 /*
2450 * View opening
2451 */
2453 enum open_flags {
2454 OPEN_DEFAULT = 0, /* Use default view switching. */
2455 OPEN_SPLIT = 1, /* Split current view. */
2456 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2457 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2458 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2459 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2460 };
2462 static void
2463 open_view(struct view *prev, enum request request, enum open_flags flags)
2464 {
2465 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2466 bool split = !!(flags & OPEN_SPLIT);
2467 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH));
2468 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2469 struct view *view = VIEW(request);
2470 int nviews = displayed_views();
2471 struct view *base_view = display[0];
2473 if (view == prev && nviews == 1 && !reload) {
2474 report("Already in %s view", view->name);
2475 return;
2476 }
2478 if (view->git_dir && !opt_git_dir[0]) {
2479 report("The %s view is disabled in pager view", view->name);
2480 return;
2481 }
2483 if (split) {
2484 display[1] = view;
2485 if (!backgrounded)
2486 current_view = 1;
2487 } else if (!nomaximize) {
2488 /* Maximize the current view. */
2489 memset(display, 0, sizeof(display));
2490 current_view = 0;
2491 display[current_view] = view;
2492 }
2494 /* Resize the view when switching between split- and full-screen,
2495 * or when switching between two different full-screen views. */
2496 if (nviews != displayed_views() ||
2497 (nviews == 1 && base_view != display[0]))
2498 resize_display();
2500 if (view->pipe)
2501 end_update(view, TRUE);
2503 if (view->ops->open) {
2504 if (!view->ops->open(view)) {
2505 report("Failed to load %s view", view->name);
2506 return;
2507 }
2509 } else if ((reload || strcmp(view->vid, view->id)) &&
2510 !begin_update(view, flags & OPEN_REFRESH)) {
2511 report("Failed to load %s view", view->name);
2512 return;
2513 }
2515 if (split && prev->lineno - prev->offset >= prev->height) {
2516 /* Take the title line into account. */
2517 int lines = prev->lineno - prev->offset - prev->height + 1;
2519 /* Scroll the view that was split if the current line is
2520 * outside the new limited view. */
2521 do_scroll_view(prev, lines);
2522 }
2524 if (prev && view != prev) {
2525 if (split && !backgrounded) {
2526 /* "Blur" the previous view. */
2527 update_view_title(prev);
2528 }
2530 view->parent = prev;
2531 }
2533 if (view->pipe && view->lines == 0) {
2534 /* Clear the old view and let the incremental updating refill
2535 * the screen. */
2536 werase(view->win);
2537 report("");
2538 } else if (view_is_displayed(view)) {
2539 redraw_view(view);
2540 report("");
2541 }
2543 /* If the view is backgrounded the above calls to report()
2544 * won't redraw the view title. */
2545 if (backgrounded)
2546 update_view_title(view);
2547 }
2549 static bool
2550 run_confirm(const char *cmd, const char *prompt)
2551 {
2552 bool confirmation = prompt_yesno(prompt);
2554 if (confirmation)
2555 system(cmd);
2557 return confirmation;
2558 }
2560 static void
2561 open_external_viewer(const char *cmd)
2562 {
2563 def_prog_mode(); /* save current tty modes */
2564 endwin(); /* restore original tty modes */
2565 system(cmd);
2566 fprintf(stderr, "Press Enter to continue");
2567 getc(stdin);
2568 reset_prog_mode();
2569 redraw_display();
2570 }
2572 static void
2573 open_mergetool(const char *file)
2574 {
2575 char cmd[SIZEOF_STR];
2576 char file_sq[SIZEOF_STR];
2578 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2579 string_format(cmd, "git mergetool %s", file_sq)) {
2580 open_external_viewer(cmd);
2581 }
2582 }
2584 static void
2585 open_editor(bool from_root, const char *file)
2586 {
2587 char cmd[SIZEOF_STR];
2588 char file_sq[SIZEOF_STR];
2589 const char *editor;
2590 char *prefix = from_root ? opt_cdup : "";
2592 editor = getenv("GIT_EDITOR");
2593 if (!editor && *opt_editor)
2594 editor = opt_editor;
2595 if (!editor)
2596 editor = getenv("VISUAL");
2597 if (!editor)
2598 editor = getenv("EDITOR");
2599 if (!editor)
2600 editor = "vi";
2602 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2603 string_format(cmd, "%s %s%s", editor, prefix, file_sq)) {
2604 open_external_viewer(cmd);
2605 }
2606 }
2608 static void
2609 open_run_request(enum request request)
2610 {
2611 struct run_request *req = get_run_request(request);
2612 char buf[SIZEOF_STR * 2];
2613 size_t bufpos;
2614 char *cmd;
2616 if (!req) {
2617 report("Unknown run request");
2618 return;
2619 }
2621 bufpos = 0;
2622 cmd = req->cmd;
2624 while (cmd) {
2625 char *next = strstr(cmd, "%(");
2626 int len = next - cmd;
2627 char *value;
2629 if (!next) {
2630 len = strlen(cmd);
2631 value = "";
2633 } else if (!strncmp(next, "%(head)", 7)) {
2634 value = ref_head;
2636 } else if (!strncmp(next, "%(commit)", 9)) {
2637 value = ref_commit;
2639 } else if (!strncmp(next, "%(blob)", 7)) {
2640 value = ref_blob;
2642 } else {
2643 report("Unknown replacement in run request: `%s`", req->cmd);
2644 return;
2645 }
2647 if (!string_format_from(buf, &bufpos, "%.*s%s", len, cmd, value))
2648 return;
2650 if (next)
2651 next = strchr(next, ')') + 1;
2652 cmd = next;
2653 }
2655 open_external_viewer(buf);
2656 }
2658 /*
2659 * User request switch noodle
2660 */
2662 static int
2663 view_driver(struct view *view, enum request request)
2664 {
2665 int i;
2667 if (request == REQ_NONE) {
2668 doupdate();
2669 return TRUE;
2670 }
2672 if (request > REQ_NONE) {
2673 open_run_request(request);
2674 /* FIXME: When all views can refresh always do this. */
2675 if (view == VIEW(REQ_VIEW_STATUS) ||
2676 view == VIEW(REQ_VIEW_MAIN) ||
2677 view == VIEW(REQ_VIEW_LOG) ||
2678 view == VIEW(REQ_VIEW_STAGE))
2679 request = REQ_REFRESH;
2680 else
2681 return TRUE;
2682 }
2684 if (view && view->lines) {
2685 request = view->ops->request(view, request, &view->line[view->lineno]);
2686 if (request == REQ_NONE)
2687 return TRUE;
2688 }
2690 switch (request) {
2691 case REQ_MOVE_UP:
2692 case REQ_MOVE_DOWN:
2693 case REQ_MOVE_PAGE_UP:
2694 case REQ_MOVE_PAGE_DOWN:
2695 case REQ_MOVE_FIRST_LINE:
2696 case REQ_MOVE_LAST_LINE:
2697 move_view(view, request);
2698 break;
2700 case REQ_SCROLL_LINE_DOWN:
2701 case REQ_SCROLL_LINE_UP:
2702 case REQ_SCROLL_PAGE_DOWN:
2703 case REQ_SCROLL_PAGE_UP:
2704 scroll_view(view, request);
2705 break;
2707 case REQ_VIEW_BLAME:
2708 if (!opt_file[0]) {
2709 report("No file chosen, press %s to open tree view",
2710 get_key(REQ_VIEW_TREE));
2711 break;
2712 }
2713 open_view(view, request, OPEN_DEFAULT);
2714 break;
2716 case REQ_VIEW_BLOB:
2717 if (!ref_blob[0]) {
2718 report("No file chosen, press %s to open tree view",
2719 get_key(REQ_VIEW_TREE));
2720 break;
2721 }
2722 open_view(view, request, OPEN_DEFAULT);
2723 break;
2725 case REQ_VIEW_PAGER:
2726 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2727 report("No pager content, press %s to run command from prompt",
2728 get_key(REQ_PROMPT));
2729 break;
2730 }
2731 open_view(view, request, OPEN_DEFAULT);
2732 break;
2734 case REQ_VIEW_STAGE:
2735 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2736 report("No stage content, press %s to open the status view and choose file",
2737 get_key(REQ_VIEW_STATUS));
2738 break;
2739 }
2740 open_view(view, request, OPEN_DEFAULT);
2741 break;
2743 case REQ_VIEW_STATUS:
2744 if (opt_is_inside_work_tree == FALSE) {
2745 report("The status view requires a working tree");
2746 break;
2747 }
2748 open_view(view, request, OPEN_DEFAULT);
2749 break;
2751 case REQ_VIEW_MAIN:
2752 case REQ_VIEW_DIFF:
2753 case REQ_VIEW_LOG:
2754 case REQ_VIEW_TREE:
2755 case REQ_VIEW_HELP:
2756 open_view(view, request, OPEN_DEFAULT);
2757 break;
2759 case REQ_NEXT:
2760 case REQ_PREVIOUS:
2761 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2763 if ((view == VIEW(REQ_VIEW_DIFF) &&
2764 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2765 (view == VIEW(REQ_VIEW_DIFF) &&
2766 view->parent == VIEW(REQ_VIEW_BLAME)) ||
2767 (view == VIEW(REQ_VIEW_STAGE) &&
2768 view->parent == VIEW(REQ_VIEW_STATUS)) ||
2769 (view == VIEW(REQ_VIEW_BLOB) &&
2770 view->parent == VIEW(REQ_VIEW_TREE))) {
2771 int line;
2773 view = view->parent;
2774 line = view->lineno;
2775 move_view(view, request);
2776 if (view_is_displayed(view))
2777 update_view_title(view);
2778 if (line != view->lineno)
2779 view->ops->request(view, REQ_ENTER,
2780 &view->line[view->lineno]);
2782 } else {
2783 move_view(view, request);
2784 }
2785 break;
2787 case REQ_VIEW_NEXT:
2788 {
2789 int nviews = displayed_views();
2790 int next_view = (current_view + 1) % nviews;
2792 if (next_view == current_view) {
2793 report("Only one view is displayed");
2794 break;
2795 }
2797 current_view = next_view;
2798 /* Blur out the title of the previous view. */
2799 update_view_title(view);
2800 report("");
2801 break;
2802 }
2803 case REQ_REFRESH:
2804 report("Refreshing is not yet supported for the %s view", view->name);
2805 break;
2807 case REQ_MAXIMIZE:
2808 if (displayed_views() == 2)
2809 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
2810 break;
2812 case REQ_TOGGLE_LINENO:
2813 opt_line_number = !opt_line_number;
2814 redraw_display();
2815 break;
2817 case REQ_TOGGLE_DATE:
2818 opt_date = !opt_date;
2819 redraw_display();
2820 break;
2822 case REQ_TOGGLE_AUTHOR:
2823 opt_author = !opt_author;
2824 redraw_display();
2825 break;
2827 case REQ_TOGGLE_REV_GRAPH:
2828 opt_rev_graph = !opt_rev_graph;
2829 redraw_display();
2830 break;
2832 case REQ_TOGGLE_REFS:
2833 opt_show_refs = !opt_show_refs;
2834 redraw_display();
2835 break;
2837 case REQ_SEARCH:
2838 case REQ_SEARCH_BACK:
2839 search_view(view, request);
2840 break;
2842 case REQ_FIND_NEXT:
2843 case REQ_FIND_PREV:
2844 find_next(view, request);
2845 break;
2847 case REQ_STOP_LOADING:
2848 for (i = 0; i < ARRAY_SIZE(views); i++) {
2849 view = &views[i];
2850 if (view->pipe)
2851 report("Stopped loading the %s view", view->name),
2852 end_update(view, TRUE);
2853 }
2854 break;
2856 case REQ_SHOW_VERSION:
2857 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
2858 return TRUE;
2860 case REQ_SCREEN_RESIZE:
2861 resize_display();
2862 /* Fall-through */
2863 case REQ_SCREEN_REDRAW:
2864 redraw_display();
2865 break;
2867 case REQ_EDIT:
2868 report("Nothing to edit");
2869 break;
2871 case REQ_ENTER:
2872 report("Nothing to enter");
2873 break;
2875 case REQ_VIEW_CLOSE:
2876 /* XXX: Mark closed views by letting view->parent point to the
2877 * view itself. Parents to closed view should never be
2878 * followed. */
2879 if (view->parent &&
2880 view->parent->parent != view->parent) {
2881 memset(display, 0, sizeof(display));
2882 current_view = 0;
2883 display[current_view] = view->parent;
2884 view->parent = view;
2885 resize_display();
2886 redraw_display();
2887 report("");
2888 break;
2889 }
2890 /* Fall-through */
2891 case REQ_QUIT:
2892 return FALSE;
2894 default:
2895 /* An unknown key will show most commonly used commands. */
2896 report("Unknown key, press 'h' for help");
2897 return TRUE;
2898 }
2900 return TRUE;
2901 }
2904 /*
2905 * Pager backend
2906 */
2908 static bool
2909 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2910 {
2911 char *text = line->data;
2913 if (opt_line_number && draw_lineno(view, lineno))
2914 return TRUE;
2916 draw_text(view, line->type, text, TRUE);
2917 return TRUE;
2918 }
2920 static bool
2921 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
2922 {
2923 char refbuf[SIZEOF_STR];
2924 char *ref = NULL;
2925 FILE *pipe;
2927 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2928 return TRUE;
2930 pipe = popen(refbuf, "r");
2931 if (!pipe)
2932 return TRUE;
2934 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2935 ref = chomp_string(ref);
2936 pclose(pipe);
2938 if (!ref || !*ref)
2939 return TRUE;
2941 /* This is the only fatal call, since it can "corrupt" the buffer. */
2942 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2943 return FALSE;
2945 return TRUE;
2946 }
2948 static void
2949 add_pager_refs(struct view *view, struct line *line)
2950 {
2951 char buf[SIZEOF_STR];
2952 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
2953 struct ref **refs;
2954 size_t bufpos = 0, refpos = 0;
2955 const char *sep = "Refs: ";
2956 bool is_tag = FALSE;
2958 assert(line->type == LINE_COMMIT);
2960 refs = get_refs(commit_id);
2961 if (!refs) {
2962 if (view == VIEW(REQ_VIEW_DIFF))
2963 goto try_add_describe_ref;
2964 return;
2965 }
2967 do {
2968 struct ref *ref = refs[refpos];
2969 const char *fmt = ref->tag ? "%s[%s]" :
2970 ref->remote ? "%s<%s>" : "%s%s";
2972 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2973 return;
2974 sep = ", ";
2975 if (ref->tag)
2976 is_tag = TRUE;
2977 } while (refs[refpos++]->next);
2979 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2980 try_add_describe_ref:
2981 /* Add <tag>-g<commit_id> "fake" reference. */
2982 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2983 return;
2984 }
2986 if (bufpos == 0)
2987 return;
2989 if (!realloc_lines(view, view->line_size + 1))
2990 return;
2992 add_line_text(view, buf, LINE_PP_REFS);
2993 }
2995 static bool
2996 pager_read(struct view *view, char *data)
2997 {
2998 struct line *line;
3000 if (!data)
3001 return TRUE;
3003 line = add_line_text(view, data, get_line_type(data));
3004 if (!line)
3005 return FALSE;
3007 if (line->type == LINE_COMMIT &&
3008 (view == VIEW(REQ_VIEW_DIFF) ||
3009 view == VIEW(REQ_VIEW_LOG)))
3010 add_pager_refs(view, line);
3012 return TRUE;
3013 }
3015 static enum request
3016 pager_request(struct view *view, enum request request, struct line *line)
3017 {
3018 int split = 0;
3020 if (request != REQ_ENTER)
3021 return request;
3023 if (line->type == LINE_COMMIT &&
3024 (view == VIEW(REQ_VIEW_LOG) ||
3025 view == VIEW(REQ_VIEW_PAGER))) {
3026 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3027 split = 1;
3028 }
3030 /* Always scroll the view even if it was split. That way
3031 * you can use Enter to scroll through the log view and
3032 * split open each commit diff. */
3033 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3035 /* FIXME: A minor workaround. Scrolling the view will call report("")
3036 * but if we are scrolling a non-current view this won't properly
3037 * update the view title. */
3038 if (split)
3039 update_view_title(view);
3041 return REQ_NONE;
3042 }
3044 static bool
3045 pager_grep(struct view *view, struct line *line)
3046 {
3047 regmatch_t pmatch;
3048 char *text = line->data;
3050 if (!*text)
3051 return FALSE;
3053 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3054 return FALSE;
3056 return TRUE;
3057 }
3059 static void
3060 pager_select(struct view *view, struct line *line)
3061 {
3062 if (line->type == LINE_COMMIT) {
3063 char *text = (char *)line->data + STRING_SIZE("commit ");
3065 if (view != VIEW(REQ_VIEW_PAGER))
3066 string_copy_rev(view->ref, text);
3067 string_copy_rev(ref_commit, text);
3068 }
3069 }
3071 static struct view_ops pager_ops = {
3072 "line",
3073 NULL,
3074 pager_read,
3075 pager_draw,
3076 pager_request,
3077 pager_grep,
3078 pager_select,
3079 };
3081 static enum request
3082 log_request(struct view *view, enum request request, struct line *line)
3083 {
3084 switch (request) {
3085 case REQ_REFRESH:
3086 load_refs();
3087 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3088 return REQ_NONE;
3089 default:
3090 return pager_request(view, request, line);
3091 }
3092 }
3094 static struct view_ops log_ops = {
3095 "line",
3096 NULL,
3097 pager_read,
3098 pager_draw,
3099 log_request,
3100 pager_grep,
3101 pager_select,
3102 };
3105 /*
3106 * Help backend
3107 */
3109 static bool
3110 help_open(struct view *view)
3111 {
3112 char buf[BUFSIZ];
3113 int lines = ARRAY_SIZE(req_info) + 2;
3114 int i;
3116 if (view->lines > 0)
3117 return TRUE;
3119 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3120 if (!req_info[i].request)
3121 lines++;
3123 lines += run_requests + 1;
3125 view->line = calloc(lines, sizeof(*view->line));
3126 if (!view->line)
3127 return FALSE;
3129 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3131 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3132 const char *key;
3134 if (req_info[i].request == REQ_NONE)
3135 continue;
3137 if (!req_info[i].request) {
3138 add_line_text(view, "", LINE_DEFAULT);
3139 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3140 continue;
3141 }
3143 key = get_key(req_info[i].request);
3144 if (!*key)
3145 key = "(no key defined)";
3147 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
3148 continue;
3150 add_line_text(view, buf, LINE_DEFAULT);
3151 }
3153 if (run_requests) {
3154 add_line_text(view, "", LINE_DEFAULT);
3155 add_line_text(view, "External commands:", LINE_DEFAULT);
3156 }
3158 for (i = 0; i < run_requests; i++) {
3159 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3160 const char *key;
3162 if (!req)
3163 continue;
3165 key = get_key_name(req->key);
3166 if (!*key)
3167 key = "(no key defined)";
3169 if (!string_format(buf, " %-10s %-14s `%s`",
3170 keymap_table[req->keymap].name,
3171 key, req->cmd))
3172 continue;
3174 add_line_text(view, buf, LINE_DEFAULT);
3175 }
3177 return TRUE;
3178 }
3180 static struct view_ops help_ops = {
3181 "line",
3182 help_open,
3183 NULL,
3184 pager_draw,
3185 pager_request,
3186 pager_grep,
3187 pager_select,
3188 };
3191 /*
3192 * Tree backend
3193 */
3195 struct tree_stack_entry {
3196 struct tree_stack_entry *prev; /* Entry below this in the stack */
3197 unsigned long lineno; /* Line number to restore */
3198 char *name; /* Position of name in opt_path */
3199 };
3201 /* The top of the path stack. */
3202 static struct tree_stack_entry *tree_stack = NULL;
3203 unsigned long tree_lineno = 0;
3205 static void
3206 pop_tree_stack_entry(void)
3207 {
3208 struct tree_stack_entry *entry = tree_stack;
3210 tree_lineno = entry->lineno;
3211 entry->name[0] = 0;
3212 tree_stack = entry->prev;
3213 free(entry);
3214 }
3216 static void
3217 push_tree_stack_entry(const char *name, unsigned long lineno)
3218 {
3219 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3220 size_t pathlen = strlen(opt_path);
3222 if (!entry)
3223 return;
3225 entry->prev = tree_stack;
3226 entry->name = opt_path + pathlen;
3227 tree_stack = entry;
3229 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3230 pop_tree_stack_entry();
3231 return;
3232 }
3234 /* Move the current line to the first tree entry. */
3235 tree_lineno = 1;
3236 entry->lineno = lineno;
3237 }
3239 /* Parse output from git-ls-tree(1):
3240 *
3241 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3242 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3243 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3244 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3245 */
3247 #define SIZEOF_TREE_ATTR \
3248 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3250 #define TREE_UP_FORMAT "040000 tree %s\t.."
3252 static int
3253 tree_compare_entry(enum line_type type1, const char *name1,
3254 enum line_type type2, const char *name2)
3255 {
3256 if (type1 != type2) {
3257 if (type1 == LINE_TREE_DIR)
3258 return -1;
3259 return 1;
3260 }
3262 return strcmp(name1, name2);
3263 }
3265 static const char *
3266 tree_path(struct line *line)
3267 {
3268 const char *path = line->data;
3270 return path + SIZEOF_TREE_ATTR;
3271 }
3273 static bool
3274 tree_read(struct view *view, char *text)
3275 {
3276 size_t textlen = text ? strlen(text) : 0;
3277 char buf[SIZEOF_STR];
3278 unsigned long pos;
3279 enum line_type type;
3280 bool first_read = view->lines == 0;
3282 if (!text)
3283 return TRUE;
3284 if (textlen <= SIZEOF_TREE_ATTR)
3285 return FALSE;
3287 type = text[STRING_SIZE("100644 ")] == 't'
3288 ? LINE_TREE_DIR : LINE_TREE_FILE;
3290 if (first_read) {
3291 /* Add path info line */
3292 if (!string_format(buf, "Directory path /%s", opt_path) ||
3293 !realloc_lines(view, view->line_size + 1) ||
3294 !add_line_text(view, buf, LINE_DEFAULT))
3295 return FALSE;
3297 /* Insert "link" to parent directory. */
3298 if (*opt_path) {
3299 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
3300 !realloc_lines(view, view->line_size + 1) ||
3301 !add_line_text(view, buf, LINE_TREE_DIR))
3302 return FALSE;
3303 }
3304 }
3306 /* Strip the path part ... */
3307 if (*opt_path) {
3308 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3309 size_t striplen = strlen(opt_path);
3310 char *path = text + SIZEOF_TREE_ATTR;
3312 if (pathlen > striplen)
3313 memmove(path, path + striplen,
3314 pathlen - striplen + 1);
3315 }
3317 /* Skip "Directory ..." and ".." line. */
3318 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
3319 struct line *line = &view->line[pos];
3320 const char *path1 = tree_path(line);
3321 char *path2 = text + SIZEOF_TREE_ATTR;
3322 int cmp = tree_compare_entry(line->type, path1, type, path2);
3324 if (cmp <= 0)
3325 continue;
3327 text = strdup(text);
3328 if (!text)
3329 return FALSE;
3331 if (view->lines > pos)
3332 memmove(&view->line[pos + 1], &view->line[pos],
3333 (view->lines - pos) * sizeof(*line));
3335 line = &view->line[pos];
3336 line->data = text;
3337 line->type = type;
3338 view->lines++;
3339 return TRUE;
3340 }
3342 if (!add_line_text(view, text, type))
3343 return FALSE;
3345 if (tree_lineno > view->lineno) {
3346 view->lineno = tree_lineno;
3347 tree_lineno = 0;
3348 }
3350 return TRUE;
3351 }
3353 static enum request
3354 tree_request(struct view *view, enum request request, struct line *line)
3355 {
3356 enum open_flags flags;
3358 if (request == REQ_VIEW_BLAME) {
3359 const char *filename = tree_path(line);
3361 if (line->type == LINE_TREE_DIR) {
3362 report("Cannot show blame for directory %s", opt_path);
3363 return REQ_NONE;
3364 }
3366 string_copy(opt_ref, view->vid);
3367 string_format(opt_file, "%s%s", opt_path, filename);
3368 return request;
3369 }
3370 if (request == REQ_TREE_PARENT) {
3371 if (*opt_path) {
3372 /* fake 'cd ..' */
3373 request = REQ_ENTER;
3374 line = &view->line[1];
3375 } else {
3376 /* quit view if at top of tree */
3377 return REQ_VIEW_CLOSE;
3378 }
3379 }
3380 if (request != REQ_ENTER)
3381 return request;
3383 /* Cleanup the stack if the tree view is at a different tree. */
3384 while (!*opt_path && tree_stack)
3385 pop_tree_stack_entry();
3387 switch (line->type) {
3388 case LINE_TREE_DIR:
3389 /* Depending on whether it is a subdir or parent (updir?) link
3390 * mangle the path buffer. */
3391 if (line == &view->line[1] && *opt_path) {
3392 pop_tree_stack_entry();
3394 } else {
3395 const char *basename = tree_path(line);
3397 push_tree_stack_entry(basename, view->lineno);
3398 }
3400 /* Trees and subtrees share the same ID, so they are not not
3401 * unique like blobs. */
3402 flags = OPEN_RELOAD;
3403 request = REQ_VIEW_TREE;
3404 break;
3406 case LINE_TREE_FILE:
3407 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3408 request = REQ_VIEW_BLOB;
3409 break;
3411 default:
3412 return TRUE;
3413 }
3415 open_view(view, request, flags);
3416 if (request == REQ_VIEW_TREE) {
3417 view->lineno = tree_lineno;
3418 }
3420 return REQ_NONE;
3421 }
3423 static void
3424 tree_select(struct view *view, struct line *line)
3425 {
3426 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3428 if (line->type == LINE_TREE_FILE) {
3429 string_copy_rev(ref_blob, text);
3431 } else if (line->type != LINE_TREE_DIR) {
3432 return;
3433 }
3435 string_copy_rev(view->ref, text);
3436 }
3438 static struct view_ops tree_ops = {
3439 "file",
3440 NULL,
3441 tree_read,
3442 pager_draw,
3443 tree_request,
3444 pager_grep,
3445 tree_select,
3446 };
3448 static bool
3449 blob_read(struct view *view, char *line)
3450 {
3451 if (!line)
3452 return TRUE;
3453 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3454 }
3456 static struct view_ops blob_ops = {
3457 "line",
3458 NULL,
3459 blob_read,
3460 pager_draw,
3461 pager_request,
3462 pager_grep,
3463 pager_select,
3464 };
3466 /*
3467 * Blame backend
3468 *
3469 * Loading the blame view is a two phase job:
3470 *
3471 * 1. File content is read either using opt_file from the
3472 * filesystem or using git-cat-file.
3473 * 2. Then blame information is incrementally added by
3474 * reading output from git-blame.
3475 */
3477 struct blame_commit {
3478 char id[SIZEOF_REV]; /* SHA1 ID. */
3479 char title[128]; /* First line of the commit message. */
3480 char author[75]; /* Author of the commit. */
3481 struct tm time; /* Date from the author ident. */
3482 char filename[128]; /* Name of file. */
3483 };
3485 struct blame {
3486 struct blame_commit *commit;
3487 unsigned int header:1;
3488 char text[1];
3489 };
3491 #define BLAME_CAT_FILE_CMD "git cat-file blob %s:%s"
3492 #define BLAME_INCREMENTAL_CMD "git blame --incremental %s %s"
3494 static bool
3495 blame_open(struct view *view)
3496 {
3497 char path[SIZEOF_STR];
3498 char ref[SIZEOF_STR] = "";
3500 if (sq_quote(path, 0, opt_file) >= sizeof(path))
3501 return FALSE;
3503 if (*opt_ref && sq_quote(ref, 0, opt_ref) >= sizeof(ref))
3504 return FALSE;
3506 if (*opt_ref) {
3507 if (!string_format(view->cmd, BLAME_CAT_FILE_CMD, ref, path))
3508 return FALSE;
3509 } else {
3510 view->pipe = fopen(opt_file, "r");
3511 if (!view->pipe &&
3512 !string_format(view->cmd, BLAME_CAT_FILE_CMD, "HEAD", path))
3513 return FALSE;
3514 }
3516 if (!view->pipe)
3517 view->pipe = popen(view->cmd, "r");
3518 if (!view->pipe)
3519 return FALSE;
3521 if (!string_format(view->cmd, BLAME_INCREMENTAL_CMD, ref, path))
3522 return FALSE;
3524 reset_view(view);
3525 string_format(view->ref, "%s ...", opt_file);
3526 string_copy_rev(view->vid, opt_file);
3527 set_nonblocking_input(TRUE);
3528 view->start_time = time(NULL);
3530 return TRUE;
3531 }
3533 static struct blame_commit *
3534 get_blame_commit(struct view *view, const char *id)
3535 {
3536 size_t i;
3538 for (i = 0; i < view->lines; i++) {
3539 struct blame *blame = view->line[i].data;
3541 if (!blame->commit)
3542 continue;
3544 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3545 return blame->commit;
3546 }
3548 {
3549 struct blame_commit *commit = calloc(1, sizeof(*commit));
3551 if (commit)
3552 string_ncopy(commit->id, id, SIZEOF_REV);
3553 return commit;
3554 }
3555 }
3557 static bool
3558 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3559 {
3560 const char *pos = *posref;
3562 *posref = NULL;
3563 pos = strchr(pos + 1, ' ');
3564 if (!pos || !isdigit(pos[1]))
3565 return FALSE;
3566 *number = atoi(pos + 1);
3567 if (*number < min || *number > max)
3568 return FALSE;
3570 *posref = pos;
3571 return TRUE;
3572 }
3574 static struct blame_commit *
3575 parse_blame_commit(struct view *view, const char *text, int *blamed)
3576 {
3577 struct blame_commit *commit;
3578 struct blame *blame;
3579 const char *pos = text + SIZEOF_REV - 1;
3580 size_t lineno;
3581 size_t group;
3583 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3584 return NULL;
3586 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3587 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3588 return NULL;
3590 commit = get_blame_commit(view, text);
3591 if (!commit)
3592 return NULL;
3594 *blamed += group;
3595 while (group--) {
3596 struct line *line = &view->line[lineno + group - 1];
3598 blame = line->data;
3599 blame->commit = commit;
3600 blame->header = !group;
3601 line->dirty = 1;
3602 }
3604 return commit;
3605 }
3607 static bool
3608 blame_read_file(struct view *view, const char *line)
3609 {
3610 if (!line) {
3611 FILE *pipe = NULL;
3613 if (view->lines > 0)
3614 pipe = popen(view->cmd, "r");
3615 else if (!view->parent)
3616 die("No blame exist for %s", view->vid);
3617 view->cmd[0] = 0;
3618 if (!pipe) {
3619 report("Failed to load blame data");
3620 return TRUE;
3621 }
3623 fclose(view->pipe);
3624 view->pipe = pipe;
3625 return FALSE;
3627 } else {
3628 size_t linelen = strlen(line);
3629 struct blame *blame = malloc(sizeof(*blame) + linelen);
3631 blame->commit = NULL;
3632 strncpy(blame->text, line, linelen);
3633 blame->text[linelen] = 0;
3634 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
3635 }
3636 }
3638 static bool
3639 match_blame_header(const char *name, char **line)
3640 {
3641 size_t namelen = strlen(name);
3642 bool matched = !strncmp(name, *line, namelen);
3644 if (matched)
3645 *line += namelen;
3647 return matched;
3648 }
3650 static bool
3651 blame_read(struct view *view, char *line)
3652 {
3653 static struct blame_commit *commit = NULL;
3654 static int blamed = 0;
3655 static time_t author_time;
3657 if (*view->cmd)
3658 return blame_read_file(view, line);
3660 if (!line) {
3661 /* Reset all! */
3662 commit = NULL;
3663 blamed = 0;
3664 string_format(view->ref, "%s", view->vid);
3665 if (view_is_displayed(view)) {
3666 update_view_title(view);
3667 redraw_view_from(view, 0);
3668 }
3669 return TRUE;
3670 }
3672 if (!commit) {
3673 commit = parse_blame_commit(view, line, &blamed);
3674 string_format(view->ref, "%s %2d%%", view->vid,
3675 blamed * 100 / view->lines);
3677 } else if (match_blame_header("author ", &line)) {
3678 string_ncopy(commit->author, line, strlen(line));
3680 } else if (match_blame_header("author-time ", &line)) {
3681 author_time = (time_t) atol(line);
3683 } else if (match_blame_header("author-tz ", &line)) {
3684 long tz;
3686 tz = ('0' - line[1]) * 60 * 60 * 10;
3687 tz += ('0' - line[2]) * 60 * 60;
3688 tz += ('0' - line[3]) * 60;
3689 tz += ('0' - line[4]) * 60;
3691 if (line[0] == '-')
3692 tz = -tz;
3694 author_time -= tz;
3695 gmtime_r(&author_time, &commit->time);
3697 } else if (match_blame_header("summary ", &line)) {
3698 string_ncopy(commit->title, line, strlen(line));
3700 } else if (match_blame_header("filename ", &line)) {
3701 string_ncopy(commit->filename, line, strlen(line));
3702 commit = NULL;
3703 }
3705 return TRUE;
3706 }
3708 static bool
3709 blame_draw(struct view *view, struct line *line, unsigned int lineno)
3710 {
3711 struct blame *blame = line->data;
3712 struct tm *time = NULL;
3713 const char *id = NULL, *author = NULL;
3715 if (blame->commit && *blame->commit->filename) {
3716 id = blame->commit->id;
3717 author = blame->commit->author;
3718 time = &blame->commit->time;
3719 }
3721 if (opt_date && draw_date(view, time))
3722 return TRUE;
3724 if (opt_author &&
3725 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
3726 return TRUE;
3728 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
3729 return TRUE;
3731 if (draw_lineno(view, lineno))
3732 return TRUE;
3734 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
3735 return TRUE;
3736 }
3738 static enum request
3739 blame_request(struct view *view, enum request request, struct line *line)
3740 {
3741 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3742 struct blame *blame = line->data;
3744 switch (request) {
3745 case REQ_ENTER:
3746 if (!blame->commit) {
3747 report("No commit loaded yet");
3748 break;
3749 }
3751 if (!strcmp(blame->commit->id, NULL_ID)) {
3752 char path[SIZEOF_STR];
3754 if (sq_quote(path, 0, view->vid) >= sizeof(path))
3755 break;
3756 string_format(opt_cmd, "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s 2>/dev/null", path);
3757 }
3759 open_view(view, REQ_VIEW_DIFF, flags);
3760 break;
3762 default:
3763 return request;
3764 }
3766 return REQ_NONE;
3767 }
3769 static bool
3770 blame_grep(struct view *view, struct line *line)
3771 {
3772 struct blame *blame = line->data;
3773 struct blame_commit *commit = blame->commit;
3774 regmatch_t pmatch;
3776 #define MATCH(text, on) \
3777 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3779 if (commit) {
3780 char buf[DATE_COLS + 1];
3782 if (MATCH(commit->title, 1) ||
3783 MATCH(commit->author, opt_author) ||
3784 MATCH(commit->id, opt_date))
3785 return TRUE;
3787 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
3788 MATCH(buf, 1))
3789 return TRUE;
3790 }
3792 return MATCH(blame->text, 1);
3794 #undef MATCH
3795 }
3797 static void
3798 blame_select(struct view *view, struct line *line)
3799 {
3800 struct blame *blame = line->data;
3801 struct blame_commit *commit = blame->commit;
3803 if (!commit)
3804 return;
3806 if (!strcmp(commit->id, NULL_ID))
3807 string_ncopy(ref_commit, "HEAD", 4);
3808 else
3809 string_copy_rev(ref_commit, commit->id);
3810 }
3812 static struct view_ops blame_ops = {
3813 "line",
3814 blame_open,
3815 blame_read,
3816 blame_draw,
3817 blame_request,
3818 blame_grep,
3819 blame_select,
3820 };
3822 /*
3823 * Status backend
3824 */
3826 struct status {
3827 char status;
3828 struct {
3829 mode_t mode;
3830 char rev[SIZEOF_REV];
3831 char name[SIZEOF_STR];
3832 } old;
3833 struct {
3834 mode_t mode;
3835 char rev[SIZEOF_REV];
3836 char name[SIZEOF_STR];
3837 } new;
3838 };
3840 static char status_onbranch[SIZEOF_STR];
3841 static struct status stage_status;
3842 static enum line_type stage_line_type;
3843 static size_t stage_chunks;
3844 static int *stage_chunk;
3846 /* This should work even for the "On branch" line. */
3847 static inline bool
3848 status_has_none(struct view *view, struct line *line)
3849 {
3850 return line < view->line + view->lines && !line[1].data;
3851 }
3853 /* Get fields from the diff line:
3854 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
3855 */
3856 static inline bool
3857 status_get_diff(struct status *file, const char *buf, size_t bufsize)
3858 {
3859 const char *old_mode = buf + 1;
3860 const char *new_mode = buf + 8;
3861 const char *old_rev = buf + 15;
3862 const char *new_rev = buf + 56;
3863 const char *status = buf + 97;
3865 if (bufsize < 99 ||
3866 old_mode[-1] != ':' ||
3867 new_mode[-1] != ' ' ||
3868 old_rev[-1] != ' ' ||
3869 new_rev[-1] != ' ' ||
3870 status[-1] != ' ')
3871 return FALSE;
3873 file->status = *status;
3875 string_copy_rev(file->old.rev, old_rev);
3876 string_copy_rev(file->new.rev, new_rev);
3878 file->old.mode = strtoul(old_mode, NULL, 8);
3879 file->new.mode = strtoul(new_mode, NULL, 8);
3881 file->old.name[0] = file->new.name[0] = 0;
3883 return TRUE;
3884 }
3886 static bool
3887 status_run(struct view *view, const char cmd[], char status, enum line_type type)
3888 {
3889 struct status *file = NULL;
3890 struct status *unmerged = NULL;
3891 char buf[SIZEOF_STR * 4];
3892 size_t bufsize = 0;
3893 FILE *pipe;
3895 pipe = popen(cmd, "r");
3896 if (!pipe)
3897 return FALSE;
3899 add_line_data(view, NULL, type);
3901 while (!feof(pipe) && !ferror(pipe)) {
3902 char *sep;
3903 size_t readsize;
3905 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
3906 if (!readsize)
3907 break;
3908 bufsize += readsize;
3910 /* Process while we have NUL chars. */
3911 while ((sep = memchr(buf, 0, bufsize))) {
3912 size_t sepsize = sep - buf + 1;
3914 if (!file) {
3915 if (!realloc_lines(view, view->line_size + 1))
3916 goto error_out;
3918 file = calloc(1, sizeof(*file));
3919 if (!file)
3920 goto error_out;
3922 add_line_data(view, file, type);
3923 }
3925 /* Parse diff info part. */
3926 if (status) {
3927 file->status = status;
3928 if (status == 'A')
3929 string_copy(file->old.rev, NULL_ID);
3931 } else if (!file->status) {
3932 if (!status_get_diff(file, buf, sepsize))
3933 goto error_out;
3935 bufsize -= sepsize;
3936 memmove(buf, sep + 1, bufsize);
3938 sep = memchr(buf, 0, bufsize);
3939 if (!sep)
3940 break;
3941 sepsize = sep - buf + 1;
3943 /* Collapse all 'M'odified entries that
3944 * follow a associated 'U'nmerged entry.
3945 */
3946 if (file->status == 'U') {
3947 unmerged = file;
3949 } else if (unmerged) {
3950 int collapse = !strcmp(buf, unmerged->new.name);
3952 unmerged = NULL;
3953 if (collapse) {
3954 free(file);
3955 view->lines--;
3956 continue;
3957 }
3958 }
3959 }
3961 /* Grab the old name for rename/copy. */
3962 if (!*file->old.name &&
3963 (file->status == 'R' || file->status == 'C')) {
3964 sepsize = sep - buf + 1;
3965 string_ncopy(file->old.name, buf, sepsize);
3966 bufsize -= sepsize;
3967 memmove(buf, sep + 1, bufsize);
3969 sep = memchr(buf, 0, bufsize);
3970 if (!sep)
3971 break;
3972 sepsize = sep - buf + 1;
3973 }
3975 /* git-ls-files just delivers a NUL separated
3976 * list of file names similar to the second half
3977 * of the git-diff-* output. */
3978 string_ncopy(file->new.name, buf, sepsize);
3979 if (!*file->old.name)
3980 string_copy(file->old.name, file->new.name);
3981 bufsize -= sepsize;
3982 memmove(buf, sep + 1, bufsize);
3983 file = NULL;
3984 }
3985 }
3987 if (ferror(pipe)) {
3988 error_out:
3989 pclose(pipe);
3990 return FALSE;
3991 }
3993 if (!view->line[view->lines - 1].data)
3994 add_line_data(view, NULL, LINE_STAT_NONE);
3996 pclose(pipe);
3997 return TRUE;
3998 }
4000 /* Don't show unmerged entries in the staged section. */
4001 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached -M HEAD"
4002 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
4003 #define STATUS_LIST_OTHER_CMD \
4004 "git ls-files -z --others --exclude-standard"
4005 #define STATUS_LIST_NO_HEAD_CMD \
4006 "git ls-files -z --cached --exclude-standard"
4008 #define STATUS_DIFF_INDEX_SHOW_CMD \
4009 "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null"
4011 #define STATUS_DIFF_FILES_SHOW_CMD \
4012 "git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null"
4014 #define STATUS_DIFF_NO_HEAD_SHOW_CMD \
4015 "git diff --no-color --patch-with-stat /dev/null %s 2>/dev/null"
4017 /* First parse staged info using git-diff-index(1), then parse unstaged
4018 * info using git-diff-files(1), and finally untracked files using
4019 * git-ls-files(1). */
4020 static bool
4021 status_open(struct view *view)
4022 {
4023 unsigned long prev_lineno = view->lineno;
4025 reset_view(view);
4027 if (!realloc_lines(view, view->line_size + 7))
4028 return FALSE;
4030 add_line_data(view, NULL, LINE_STAT_HEAD);
4031 if (opt_no_head)
4032 string_copy(status_onbranch, "Initial commit");
4033 else if (!*opt_head)
4034 string_copy(status_onbranch, "Not currently on any branch");
4035 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4036 return FALSE;
4038 system("git update-index -q --refresh >/dev/null 2>/dev/null");
4040 if (opt_no_head) {
4041 if (!status_run(view, STATUS_LIST_NO_HEAD_CMD, 'A', LINE_STAT_STAGED))
4042 return FALSE;
4043 } else if (!status_run(view, STATUS_DIFF_INDEX_CMD, 0, LINE_STAT_STAGED)) {
4044 return FALSE;
4045 }
4047 if (!status_run(view, STATUS_DIFF_FILES_CMD, 0, LINE_STAT_UNSTAGED) ||
4048 !status_run(view, STATUS_LIST_OTHER_CMD, '?', LINE_STAT_UNTRACKED))
4049 return FALSE;
4051 /* If all went well restore the previous line number to stay in
4052 * the context or select a line with something that can be
4053 * updated. */
4054 if (prev_lineno >= view->lines)
4055 prev_lineno = view->lines - 1;
4056 while (prev_lineno < view->lines && !view->line[prev_lineno].data)
4057 prev_lineno++;
4058 while (prev_lineno > 0 && !view->line[prev_lineno].data)
4059 prev_lineno--;
4061 /* If the above fails, always skip the "On branch" line. */
4062 if (prev_lineno < view->lines)
4063 view->lineno = prev_lineno;
4064 else
4065 view->lineno = 1;
4067 if (view->lineno < view->offset)
4068 view->offset = view->lineno;
4069 else if (view->offset + view->height <= view->lineno)
4070 view->offset = view->lineno - view->height + 1;
4072 return TRUE;
4073 }
4075 static bool
4076 status_draw(struct view *view, struct line *line, unsigned int lineno)
4077 {
4078 struct status *status = line->data;
4079 enum line_type type;
4080 const char *text;
4082 if (!status) {
4083 switch (line->type) {
4084 case LINE_STAT_STAGED:
4085 type = LINE_STAT_SECTION;
4086 text = "Changes to be committed:";
4087 break;
4089 case LINE_STAT_UNSTAGED:
4090 type = LINE_STAT_SECTION;
4091 text = "Changed but not updated:";
4092 break;
4094 case LINE_STAT_UNTRACKED:
4095 type = LINE_STAT_SECTION;
4096 text = "Untracked files:";
4097 break;
4099 case LINE_STAT_NONE:
4100 type = LINE_DEFAULT;
4101 text = " (no files)";
4102 break;
4104 case LINE_STAT_HEAD:
4105 type = LINE_STAT_HEAD;
4106 text = status_onbranch;
4107 break;
4109 default:
4110 return FALSE;
4111 }
4112 } else {
4113 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4115 buf[0] = status->status;
4116 if (draw_text(view, line->type, buf, TRUE))
4117 return TRUE;
4118 type = LINE_DEFAULT;
4119 text = status->new.name;
4120 }
4122 draw_text(view, type, text, TRUE);
4123 return TRUE;
4124 }
4126 static enum request
4127 status_enter(struct view *view, struct line *line)
4128 {
4129 struct status *status = line->data;
4130 char oldpath[SIZEOF_STR] = "";
4131 char newpath[SIZEOF_STR] = "";
4132 const char *info;
4133 size_t cmdsize = 0;
4134 enum open_flags split;
4136 if (line->type == LINE_STAT_NONE ||
4137 (!status && line[1].type == LINE_STAT_NONE)) {
4138 report("No file to diff");
4139 return REQ_NONE;
4140 }
4142 if (status) {
4143 if (sq_quote(oldpath, 0, status->old.name) >= sizeof(oldpath))
4144 return REQ_QUIT;
4145 /* Diffs for unmerged entries are empty when pasing the
4146 * new path, so leave it empty. */
4147 if (status->status != 'U' &&
4148 sq_quote(newpath, 0, status->new.name) >= sizeof(newpath))
4149 return REQ_QUIT;
4150 }
4152 if (opt_cdup[0] &&
4153 line->type != LINE_STAT_UNTRACKED &&
4154 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
4155 return REQ_QUIT;
4157 switch (line->type) {
4158 case LINE_STAT_STAGED:
4159 if (opt_no_head) {
4160 if (!string_format_from(opt_cmd, &cmdsize,
4161 STATUS_DIFF_NO_HEAD_SHOW_CMD,
4162 newpath))
4163 return REQ_QUIT;
4164 } else {
4165 if (!string_format_from(opt_cmd, &cmdsize,
4166 STATUS_DIFF_INDEX_SHOW_CMD,
4167 oldpath, newpath))
4168 return REQ_QUIT;
4169 }
4171 if (status)
4172 info = "Staged changes to %s";
4173 else
4174 info = "Staged changes";
4175 break;
4177 case LINE_STAT_UNSTAGED:
4178 if (!string_format_from(opt_cmd, &cmdsize,
4179 STATUS_DIFF_FILES_SHOW_CMD, oldpath, newpath))
4180 return REQ_QUIT;
4181 if (status)
4182 info = "Unstaged changes to %s";
4183 else
4184 info = "Unstaged changes";
4185 break;
4187 case LINE_STAT_UNTRACKED:
4188 if (opt_pipe)
4189 return REQ_QUIT;
4191 if (!status) {
4192 report("No file to show");
4193 return REQ_NONE;
4194 }
4196 opt_pipe = fopen(status->new.name, "r");
4197 info = "Untracked file %s";
4198 break;
4200 case LINE_STAT_HEAD:
4201 return REQ_NONE;
4203 default:
4204 die("line type %d not handled in switch", line->type);
4205 }
4207 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4208 open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | split);
4209 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4210 if (status) {
4211 stage_status = *status;
4212 } else {
4213 memset(&stage_status, 0, sizeof(stage_status));
4214 }
4216 stage_line_type = line->type;
4217 stage_chunks = 0;
4218 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4219 }
4221 return REQ_NONE;
4222 }
4224 static bool
4225 status_exists(struct status *status, enum line_type type)
4226 {
4227 struct view *view = VIEW(REQ_VIEW_STATUS);
4228 struct line *line;
4230 for (line = view->line; line < view->line + view->lines; line++) {
4231 struct status *pos = line->data;
4233 if (line->type == type && pos &&
4234 !strcmp(status->new.name, pos->new.name))
4235 return TRUE;
4236 }
4238 return FALSE;
4239 }
4242 static FILE *
4243 status_update_prepare(enum line_type type)
4244 {
4245 char cmd[SIZEOF_STR];
4246 size_t cmdsize = 0;
4248 if (opt_cdup[0] &&
4249 type != LINE_STAT_UNTRACKED &&
4250 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4251 return NULL;
4253 switch (type) {
4254 case LINE_STAT_STAGED:
4255 string_add(cmd, cmdsize, "git update-index -z --index-info");
4256 break;
4258 case LINE_STAT_UNSTAGED:
4259 case LINE_STAT_UNTRACKED:
4260 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
4261 break;
4263 default:
4264 die("line type %d not handled in switch", type);
4265 }
4267 return popen(cmd, "w");
4268 }
4270 static bool
4271 status_update_write(FILE *pipe, struct status *status, enum line_type type)
4272 {
4273 char buf[SIZEOF_STR];
4274 size_t bufsize = 0;
4275 size_t written = 0;
4277 switch (type) {
4278 case LINE_STAT_STAGED:
4279 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4280 status->old.mode,
4281 status->old.rev,
4282 status->old.name, 0))
4283 return FALSE;
4284 break;
4286 case LINE_STAT_UNSTAGED:
4287 case LINE_STAT_UNTRACKED:
4288 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4289 return FALSE;
4290 break;
4292 default:
4293 die("line type %d not handled in switch", type);
4294 }
4296 while (!ferror(pipe) && written < bufsize) {
4297 written += fwrite(buf + written, 1, bufsize - written, pipe);
4298 }
4300 return written == bufsize;
4301 }
4303 static bool
4304 status_update_file(struct status *status, enum line_type type)
4305 {
4306 FILE *pipe = status_update_prepare(type);
4307 bool result;
4309 if (!pipe)
4310 return FALSE;
4312 result = status_update_write(pipe, status, type);
4313 pclose(pipe);
4314 return result;
4315 }
4317 static bool
4318 status_update_files(struct view *view, struct line *line)
4319 {
4320 FILE *pipe = status_update_prepare(line->type);
4321 bool result = TRUE;
4322 struct line *pos = view->line + view->lines;
4323 int files = 0;
4324 int file, done;
4326 if (!pipe)
4327 return FALSE;
4329 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4330 files++;
4332 for (file = 0, done = 0; result && file < files; line++, file++) {
4333 int almost_done = file * 100 / files;
4335 if (almost_done > done) {
4336 done = almost_done;
4337 string_format(view->ref, "updating file %u of %u (%d%% done)",
4338 file, files, done);
4339 update_view_title(view);
4340 }
4341 result = status_update_write(pipe, line->data, line->type);
4342 }
4344 pclose(pipe);
4345 return result;
4346 }
4348 static bool
4349 status_update(struct view *view)
4350 {
4351 struct line *line = &view->line[view->lineno];
4353 assert(view->lines);
4355 if (!line->data) {
4356 /* This should work even for the "On branch" line. */
4357 if (line < view->line + view->lines && !line[1].data) {
4358 report("Nothing to update");
4359 return FALSE;
4360 }
4362 if (!status_update_files(view, line + 1)) {
4363 report("Failed to update file status");
4364 return FALSE;
4365 }
4367 } else if (!status_update_file(line->data, line->type)) {
4368 report("Failed to update file status");
4369 return FALSE;
4370 }
4372 return TRUE;
4373 }
4375 static bool
4376 status_revert(struct status *status, enum line_type type, bool has_none)
4377 {
4378 if (!status || type != LINE_STAT_UNSTAGED) {
4379 if (type == LINE_STAT_STAGED) {
4380 report("Cannot revert changes to staged files");
4381 } else if (type == LINE_STAT_UNTRACKED) {
4382 report("Cannot revert changes to untracked files");
4383 } else if (has_none) {
4384 report("Nothing to revert");
4385 } else {
4386 report("Cannot revert changes to multiple files");
4387 }
4388 return FALSE;
4390 } else {
4391 char cmd[SIZEOF_STR];
4392 char file_sq[SIZEOF_STR];
4394 if (sq_quote(file_sq, 0, status->old.name) >= sizeof(file_sq) ||
4395 !string_format(cmd, "git checkout %s%s", opt_cdup, file_sq))
4396 return FALSE;
4398 return run_confirm(cmd, "Are you sure you want to overwrite any changes?");
4399 }
4400 }
4402 static enum request
4403 status_request(struct view *view, enum request request, struct line *line)
4404 {
4405 struct status *status = line->data;
4407 switch (request) {
4408 case REQ_STATUS_UPDATE:
4409 if (!status_update(view))
4410 return REQ_NONE;
4411 break;
4413 case REQ_STATUS_REVERT:
4414 if (!status_revert(status, line->type, status_has_none(view, line)))
4415 return REQ_NONE;
4416 break;
4418 case REQ_STATUS_MERGE:
4419 if (!status || status->status != 'U') {
4420 report("Merging only possible for files with unmerged status ('U').");
4421 return REQ_NONE;
4422 }
4423 open_mergetool(status->new.name);
4424 break;
4426 case REQ_EDIT:
4427 if (!status)
4428 return request;
4430 open_editor(status->status != '?', status->new.name);
4431 break;
4433 case REQ_VIEW_BLAME:
4434 if (status) {
4435 string_copy(opt_file, status->new.name);
4436 opt_ref[0] = 0;
4437 }
4438 return request;
4440 case REQ_ENTER:
4441 /* After returning the status view has been split to
4442 * show the stage view. No further reloading is
4443 * necessary. */
4444 status_enter(view, line);
4445 return REQ_NONE;
4447 case REQ_REFRESH:
4448 /* Simply reload the view. */
4449 break;
4451 default:
4452 return request;
4453 }
4455 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4457 return REQ_NONE;
4458 }
4460 static void
4461 status_select(struct view *view, struct line *line)
4462 {
4463 struct status *status = line->data;
4464 char file[SIZEOF_STR] = "all files";
4465 const char *text;
4466 const char *key;
4468 if (status && !string_format(file, "'%s'", status->new.name))
4469 return;
4471 if (!status && line[1].type == LINE_STAT_NONE)
4472 line++;
4474 switch (line->type) {
4475 case LINE_STAT_STAGED:
4476 text = "Press %s to unstage %s for commit";
4477 break;
4479 case LINE_STAT_UNSTAGED:
4480 text = "Press %s to stage %s for commit";
4481 break;
4483 case LINE_STAT_UNTRACKED:
4484 text = "Press %s to stage %s for addition";
4485 break;
4487 case LINE_STAT_HEAD:
4488 case LINE_STAT_NONE:
4489 text = "Nothing to update";
4490 break;
4492 default:
4493 die("line type %d not handled in switch", line->type);
4494 }
4496 if (status && status->status == 'U') {
4497 text = "Press %s to resolve conflict in %s";
4498 key = get_key(REQ_STATUS_MERGE);
4500 } else {
4501 key = get_key(REQ_STATUS_UPDATE);
4502 }
4504 string_format(view->ref, text, key, file);
4505 }
4507 static bool
4508 status_grep(struct view *view, struct line *line)
4509 {
4510 struct status *status = line->data;
4511 enum { S_STATUS, S_NAME, S_END } state;
4512 char buf[2] = "?";
4513 regmatch_t pmatch;
4515 if (!status)
4516 return FALSE;
4518 for (state = S_STATUS; state < S_END; state++) {
4519 const char *text;
4521 switch (state) {
4522 case S_NAME: text = status->new.name; break;
4523 case S_STATUS:
4524 buf[0] = status->status;
4525 text = buf;
4526 break;
4528 default:
4529 return FALSE;
4530 }
4532 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4533 return TRUE;
4534 }
4536 return FALSE;
4537 }
4539 static struct view_ops status_ops = {
4540 "file",
4541 status_open,
4542 NULL,
4543 status_draw,
4544 status_request,
4545 status_grep,
4546 status_select,
4547 };
4550 static bool
4551 stage_diff_line(FILE *pipe, struct line *line)
4552 {
4553 const char *buf = line->data;
4554 size_t bufsize = strlen(buf);
4555 size_t written = 0;
4557 while (!ferror(pipe) && written < bufsize) {
4558 written += fwrite(buf + written, 1, bufsize - written, pipe);
4559 }
4561 fputc('\n', pipe);
4563 return written == bufsize;
4564 }
4566 static bool
4567 stage_diff_write(FILE *pipe, struct line *line, struct line *end)
4568 {
4569 while (line < end) {
4570 if (!stage_diff_line(pipe, line++))
4571 return FALSE;
4572 if (line->type == LINE_DIFF_CHUNK ||
4573 line->type == LINE_DIFF_HEADER)
4574 break;
4575 }
4577 return TRUE;
4578 }
4580 static struct line *
4581 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4582 {
4583 for (; view->line < line; line--)
4584 if (line->type == type)
4585 return line;
4587 return NULL;
4588 }
4590 static bool
4591 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
4592 {
4593 char cmd[SIZEOF_STR];
4594 size_t cmdsize = 0;
4595 struct line *diff_hdr;
4596 FILE *pipe;
4598 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4599 if (!diff_hdr)
4600 return FALSE;
4602 if (opt_cdup[0] &&
4603 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4604 return FALSE;
4606 if (!string_format_from(cmd, &cmdsize,
4607 "git apply --whitespace=nowarn %s %s - && "
4608 "git update-index -q --unmerged --refresh 2>/dev/null",
4609 revert ? "" : "--cached",
4610 revert || stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
4611 return FALSE;
4613 pipe = popen(cmd, "w");
4614 if (!pipe)
4615 return FALSE;
4617 if (!stage_diff_write(pipe, diff_hdr, chunk) ||
4618 !stage_diff_write(pipe, chunk, view->line + view->lines))
4619 chunk = NULL;
4621 pclose(pipe);
4623 return chunk ? TRUE : FALSE;
4624 }
4626 static bool
4627 stage_update(struct view *view, struct line *line)
4628 {
4629 struct line *chunk = NULL;
4631 if (!opt_no_head && stage_line_type != LINE_STAT_UNTRACKED)
4632 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4634 if (chunk) {
4635 if (!stage_apply_chunk(view, chunk, FALSE)) {
4636 report("Failed to apply chunk");
4637 return FALSE;
4638 }
4640 } else if (!stage_status.status) {
4641 view = VIEW(REQ_VIEW_STATUS);
4643 for (line = view->line; line < view->line + view->lines; line++)
4644 if (line->type == stage_line_type)
4645 break;
4647 if (!status_update_files(view, line + 1)) {
4648 report("Failed to update files");
4649 return FALSE;
4650 }
4652 } else if (!status_update_file(&stage_status, stage_line_type)) {
4653 report("Failed to update file");
4654 return FALSE;
4655 }
4657 return TRUE;
4658 }
4660 static bool
4661 stage_revert(struct view *view, struct line *line)
4662 {
4663 struct line *chunk = NULL;
4665 if (!opt_no_head && stage_line_type == LINE_STAT_UNSTAGED)
4666 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4668 if (chunk) {
4669 if (!prompt_yesno("Are you sure you want to revert changes?"))
4670 return FALSE;
4672 if (!stage_apply_chunk(view, chunk, TRUE)) {
4673 report("Failed to revert chunk");
4674 return FALSE;
4675 }
4676 return TRUE;
4678 } else {
4679 return status_revert(stage_status.status ? &stage_status : NULL,
4680 stage_line_type, FALSE);
4681 }
4682 }
4685 static void
4686 stage_next(struct view *view, struct line *line)
4687 {
4688 int i;
4690 if (!stage_chunks) {
4691 static size_t alloc = 0;
4692 int *tmp;
4694 for (line = view->line; line < view->line + view->lines; line++) {
4695 if (line->type != LINE_DIFF_CHUNK)
4696 continue;
4698 tmp = realloc_items(stage_chunk, &alloc,
4699 stage_chunks, sizeof(*tmp));
4700 if (!tmp) {
4701 report("Allocation failure");
4702 return;
4703 }
4705 stage_chunk = tmp;
4706 stage_chunk[stage_chunks++] = line - view->line;
4707 }
4708 }
4710 for (i = 0; i < stage_chunks; i++) {
4711 if (stage_chunk[i] > view->lineno) {
4712 do_scroll_view(view, stage_chunk[i] - view->lineno);
4713 report("Chunk %d of %d", i + 1, stage_chunks);
4714 return;
4715 }
4716 }
4718 report("No next chunk found");
4719 }
4721 static enum request
4722 stage_request(struct view *view, enum request request, struct line *line)
4723 {
4724 switch (request) {
4725 case REQ_STATUS_UPDATE:
4726 if (!stage_update(view, line))
4727 return REQ_NONE;
4728 break;
4730 case REQ_STATUS_REVERT:
4731 if (!stage_revert(view, line))
4732 return REQ_NONE;
4733 break;
4735 case REQ_STAGE_NEXT:
4736 if (stage_line_type == LINE_STAT_UNTRACKED) {
4737 report("File is untracked; press %s to add",
4738 get_key(REQ_STATUS_UPDATE));
4739 return REQ_NONE;
4740 }
4741 stage_next(view, line);
4742 return REQ_NONE;
4744 case REQ_EDIT:
4745 if (!stage_status.new.name[0])
4746 return request;
4748 open_editor(stage_status.status != '?', stage_status.new.name);
4749 break;
4751 case REQ_REFRESH:
4752 /* Reload everything ... */
4753 break;
4755 case REQ_VIEW_BLAME:
4756 if (stage_status.new.name[0]) {
4757 string_copy(opt_file, stage_status.new.name);
4758 opt_ref[0] = 0;
4759 }
4760 return request;
4762 case REQ_ENTER:
4763 return pager_request(view, request, line);
4765 default:
4766 return request;
4767 }
4769 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
4771 /* Check whether the staged entry still exists, and close the
4772 * stage view if it doesn't. */
4773 if (!status_exists(&stage_status, stage_line_type))
4774 return REQ_VIEW_CLOSE;
4776 if (stage_line_type == LINE_STAT_UNTRACKED)
4777 opt_pipe = fopen(stage_status.new.name, "r");
4778 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
4780 return REQ_NONE;
4781 }
4783 static struct view_ops stage_ops = {
4784 "line",
4785 NULL,
4786 pager_read,
4787 pager_draw,
4788 stage_request,
4789 pager_grep,
4790 pager_select,
4791 };
4794 /*
4795 * Revision graph
4796 */
4798 struct commit {
4799 char id[SIZEOF_REV]; /* SHA1 ID. */
4800 char title[128]; /* First line of the commit message. */
4801 char author[75]; /* Author of the commit. */
4802 struct tm time; /* Date from the author ident. */
4803 struct ref **refs; /* Repository references. */
4804 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
4805 size_t graph_size; /* The width of the graph array. */
4806 bool has_parents; /* Rewritten --parents seen. */
4807 };
4809 /* Size of rev graph with no "padding" columns */
4810 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
4812 struct rev_graph {
4813 struct rev_graph *prev, *next, *parents;
4814 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
4815 size_t size;
4816 struct commit *commit;
4817 size_t pos;
4818 unsigned int boundary:1;
4819 };
4821 /* Parents of the commit being visualized. */
4822 static struct rev_graph graph_parents[4];
4824 /* The current stack of revisions on the graph. */
4825 static struct rev_graph graph_stacks[4] = {
4826 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
4827 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
4828 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
4829 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
4830 };
4832 static inline bool
4833 graph_parent_is_merge(struct rev_graph *graph)
4834 {
4835 return graph->parents->size > 1;
4836 }
4838 static inline void
4839 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
4840 {
4841 struct commit *commit = graph->commit;
4843 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
4844 commit->graph[commit->graph_size++] = symbol;
4845 }
4847 static void
4848 clear_rev_graph(struct rev_graph *graph)
4849 {
4850 graph->boundary = 0;
4851 graph->size = graph->pos = 0;
4852 graph->commit = NULL;
4853 memset(graph->parents, 0, sizeof(*graph->parents));
4854 }
4856 static void
4857 done_rev_graph(struct rev_graph *graph)
4858 {
4859 if (graph_parent_is_merge(graph) &&
4860 graph->pos < graph->size - 1 &&
4861 graph->next->size == graph->size + graph->parents->size - 1) {
4862 size_t i = graph->pos + graph->parents->size - 1;
4864 graph->commit->graph_size = i * 2;
4865 while (i < graph->next->size - 1) {
4866 append_to_rev_graph(graph, ' ');
4867 append_to_rev_graph(graph, '\\');
4868 i++;
4869 }
4870 }
4872 clear_rev_graph(graph);
4873 }
4875 static void
4876 push_rev_graph(struct rev_graph *graph, const char *parent)
4877 {
4878 int i;
4880 /* "Collapse" duplicate parents lines.
4881 *
4882 * FIXME: This needs to also update update the drawn graph but
4883 * for now it just serves as a method for pruning graph lines. */
4884 for (i = 0; i < graph->size; i++)
4885 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
4886 return;
4888 if (graph->size < SIZEOF_REVITEMS) {
4889 string_copy_rev(graph->rev[graph->size++], parent);
4890 }
4891 }
4893 static chtype
4894 get_rev_graph_symbol(struct rev_graph *graph)
4895 {
4896 chtype symbol;
4898 if (graph->boundary)
4899 symbol = REVGRAPH_BOUND;
4900 else if (graph->parents->size == 0)
4901 symbol = REVGRAPH_INIT;
4902 else if (graph_parent_is_merge(graph))
4903 symbol = REVGRAPH_MERGE;
4904 else if (graph->pos >= graph->size)
4905 symbol = REVGRAPH_BRANCH;
4906 else
4907 symbol = REVGRAPH_COMMIT;
4909 return symbol;
4910 }
4912 static void
4913 draw_rev_graph(struct rev_graph *graph)
4914 {
4915 struct rev_filler {
4916 chtype separator, line;
4917 };
4918 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
4919 static struct rev_filler fillers[] = {
4920 { ' ', '|' },
4921 { '`', '.' },
4922 { '\'', ' ' },
4923 { '/', ' ' },
4924 };
4925 chtype symbol = get_rev_graph_symbol(graph);
4926 struct rev_filler *filler;
4927 size_t i;
4929 if (opt_line_graphics)
4930 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
4932 filler = &fillers[DEFAULT];
4934 for (i = 0; i < graph->pos; i++) {
4935 append_to_rev_graph(graph, filler->line);
4936 if (graph_parent_is_merge(graph->prev) &&
4937 graph->prev->pos == i)
4938 filler = &fillers[RSHARP];
4940 append_to_rev_graph(graph, filler->separator);
4941 }
4943 /* Place the symbol for this revision. */
4944 append_to_rev_graph(graph, symbol);
4946 if (graph->prev->size > graph->size)
4947 filler = &fillers[RDIAG];
4948 else
4949 filler = &fillers[DEFAULT];
4951 i++;
4953 for (; i < graph->size; i++) {
4954 append_to_rev_graph(graph, filler->separator);
4955 append_to_rev_graph(graph, filler->line);
4956 if (graph_parent_is_merge(graph->prev) &&
4957 i < graph->prev->pos + graph->parents->size)
4958 filler = &fillers[RSHARP];
4959 if (graph->prev->size > graph->size)
4960 filler = &fillers[LDIAG];
4961 }
4963 if (graph->prev->size > graph->size) {
4964 append_to_rev_graph(graph, filler->separator);
4965 if (filler->line != ' ')
4966 append_to_rev_graph(graph, filler->line);
4967 }
4968 }
4970 /* Prepare the next rev graph */
4971 static void
4972 prepare_rev_graph(struct rev_graph *graph)
4973 {
4974 size_t i;
4976 /* First, traverse all lines of revisions up to the active one. */
4977 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
4978 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
4979 break;
4981 push_rev_graph(graph->next, graph->rev[graph->pos]);
4982 }
4984 /* Interleave the new revision parent(s). */
4985 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
4986 push_rev_graph(graph->next, graph->parents->rev[i]);
4988 /* Lastly, put any remaining revisions. */
4989 for (i = graph->pos + 1; i < graph->size; i++)
4990 push_rev_graph(graph->next, graph->rev[i]);
4991 }
4993 static void
4994 update_rev_graph(struct rev_graph *graph)
4995 {
4996 /* If this is the finalizing update ... */
4997 if (graph->commit)
4998 prepare_rev_graph(graph);
5000 /* Graph visualization needs a one rev look-ahead,
5001 * so the first update doesn't visualize anything. */
5002 if (!graph->prev->commit)
5003 return;
5005 draw_rev_graph(graph->prev);
5006 done_rev_graph(graph->prev->prev);
5007 }
5010 /*
5011 * Main view backend
5012 */
5014 static bool
5015 main_draw(struct view *view, struct line *line, unsigned int lineno)
5016 {
5017 struct commit *commit = line->data;
5019 if (!*commit->author)
5020 return FALSE;
5022 if (opt_date && draw_date(view, &commit->time))
5023 return TRUE;
5025 if (opt_author &&
5026 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5027 return TRUE;
5029 if (opt_rev_graph && commit->graph_size &&
5030 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5031 return TRUE;
5033 if (opt_show_refs && commit->refs) {
5034 size_t i = 0;
5036 do {
5037 enum line_type type;
5039 if (commit->refs[i]->head)
5040 type = LINE_MAIN_HEAD;
5041 else if (commit->refs[i]->ltag)
5042 type = LINE_MAIN_LOCAL_TAG;
5043 else if (commit->refs[i]->tag)
5044 type = LINE_MAIN_TAG;
5045 else if (commit->refs[i]->tracked)
5046 type = LINE_MAIN_TRACKED;
5047 else if (commit->refs[i]->remote)
5048 type = LINE_MAIN_REMOTE;
5049 else
5050 type = LINE_MAIN_REF;
5052 if (draw_text(view, type, "[", TRUE) ||
5053 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5054 draw_text(view, type, "]", TRUE))
5055 return TRUE;
5057 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5058 return TRUE;
5059 } while (commit->refs[i++]->next);
5060 }
5062 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5063 return TRUE;
5064 }
5066 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5067 static bool
5068 main_read(struct view *view, char *line)
5069 {
5070 static struct rev_graph *graph = graph_stacks;
5071 enum line_type type;
5072 struct commit *commit;
5074 if (!line) {
5075 int i;
5077 if (!view->lines && !view->parent)
5078 die("No revisions match the given arguments.");
5079 if (view->lines > 0) {
5080 commit = view->line[view->lines - 1].data;
5081 if (!*commit->author) {
5082 view->lines--;
5083 free(commit);
5084 graph->commit = NULL;
5085 }
5086 }
5087 update_rev_graph(graph);
5089 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5090 clear_rev_graph(&graph_stacks[i]);
5091 return TRUE;
5092 }
5094 type = get_line_type(line);
5095 if (type == LINE_COMMIT) {
5096 commit = calloc(1, sizeof(struct commit));
5097 if (!commit)
5098 return FALSE;
5100 line += STRING_SIZE("commit ");
5101 if (*line == '-') {
5102 graph->boundary = 1;
5103 line++;
5104 }
5106 string_copy_rev(commit->id, line);
5107 commit->refs = get_refs(commit->id);
5108 graph->commit = commit;
5109 add_line_data(view, commit, LINE_MAIN_COMMIT);
5111 while ((line = strchr(line, ' '))) {
5112 line++;
5113 push_rev_graph(graph->parents, line);
5114 commit->has_parents = TRUE;
5115 }
5116 return TRUE;
5117 }
5119 if (!view->lines)
5120 return TRUE;
5121 commit = view->line[view->lines - 1].data;
5123 switch (type) {
5124 case LINE_PARENT:
5125 if (commit->has_parents)
5126 break;
5127 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5128 break;
5130 case LINE_AUTHOR:
5131 {
5132 /* Parse author lines where the name may be empty:
5133 * author <email@address.tld> 1138474660 +0100
5134 */
5135 char *ident = line + STRING_SIZE("author ");
5136 char *nameend = strchr(ident, '<');
5137 char *emailend = strchr(ident, '>');
5139 if (!nameend || !emailend)
5140 break;
5142 update_rev_graph(graph);
5143 graph = graph->next;
5145 *nameend = *emailend = 0;
5146 ident = chomp_string(ident);
5147 if (!*ident) {
5148 ident = chomp_string(nameend + 1);
5149 if (!*ident)
5150 ident = "Unknown";
5151 }
5153 string_ncopy(commit->author, ident, strlen(ident));
5155 /* Parse epoch and timezone */
5156 if (emailend[1] == ' ') {
5157 char *secs = emailend + 2;
5158 char *zone = strchr(secs, ' ');
5159 time_t time = (time_t) atol(secs);
5161 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5162 long tz;
5164 zone++;
5165 tz = ('0' - zone[1]) * 60 * 60 * 10;
5166 tz += ('0' - zone[2]) * 60 * 60;
5167 tz += ('0' - zone[3]) * 60;
5168 tz += ('0' - zone[4]) * 60;
5170 if (zone[0] == '-')
5171 tz = -tz;
5173 time -= tz;
5174 }
5176 gmtime_r(&time, &commit->time);
5177 }
5178 break;
5179 }
5180 default:
5181 /* Fill in the commit title if it has not already been set. */
5182 if (commit->title[0])
5183 break;
5185 /* Require titles to start with a non-space character at the
5186 * offset used by git log. */
5187 if (strncmp(line, " ", 4))
5188 break;
5189 line += 4;
5190 /* Well, if the title starts with a whitespace character,
5191 * try to be forgiving. Otherwise we end up with no title. */
5192 while (isspace(*line))
5193 line++;
5194 if (*line == '\0')
5195 break;
5196 /* FIXME: More graceful handling of titles; append "..." to
5197 * shortened titles, etc. */
5199 string_ncopy(commit->title, line, strlen(line));
5200 }
5202 return TRUE;
5203 }
5205 static enum request
5206 main_request(struct view *view, enum request request, struct line *line)
5207 {
5208 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5210 switch (request) {
5211 case REQ_ENTER:
5212 open_view(view, REQ_VIEW_DIFF, flags);
5213 break;
5214 case REQ_REFRESH:
5215 load_refs();
5216 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5217 break;
5218 default:
5219 return request;
5220 }
5222 return REQ_NONE;
5223 }
5225 static bool
5226 grep_refs(struct ref **refs, regex_t *regex)
5227 {
5228 regmatch_t pmatch;
5229 size_t i = 0;
5231 if (!refs)
5232 return FALSE;
5233 do {
5234 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5235 return TRUE;
5236 } while (refs[i++]->next);
5238 return FALSE;
5239 }
5241 static bool
5242 main_grep(struct view *view, struct line *line)
5243 {
5244 struct commit *commit = line->data;
5245 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5246 char buf[DATE_COLS + 1];
5247 regmatch_t pmatch;
5249 for (state = S_TITLE; state < S_END; state++) {
5250 char *text;
5252 switch (state) {
5253 case S_TITLE: text = commit->title; break;
5254 case S_AUTHOR:
5255 if (!opt_author)
5256 continue;
5257 text = commit->author;
5258 break;
5259 case S_DATE:
5260 if (!opt_date)
5261 continue;
5262 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5263 continue;
5264 text = buf;
5265 break;
5266 case S_REFS:
5267 if (!opt_show_refs)
5268 continue;
5269 if (grep_refs(commit->refs, view->regex) == TRUE)
5270 return TRUE;
5271 continue;
5272 default:
5273 return FALSE;
5274 }
5276 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5277 return TRUE;
5278 }
5280 return FALSE;
5281 }
5283 static void
5284 main_select(struct view *view, struct line *line)
5285 {
5286 struct commit *commit = line->data;
5288 string_copy_rev(view->ref, commit->id);
5289 string_copy_rev(ref_commit, view->ref);
5290 }
5292 static struct view_ops main_ops = {
5293 "commit",
5294 NULL,
5295 main_read,
5296 main_draw,
5297 main_request,
5298 main_grep,
5299 main_select,
5300 };
5303 /*
5304 * Unicode / UTF-8 handling
5305 *
5306 * NOTE: Much of the following code for dealing with unicode is derived from
5307 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5308 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5309 */
5311 /* I've (over)annotated a lot of code snippets because I am not entirely
5312 * confident that the approach taken by this small UTF-8 interface is correct.
5313 * --jonas */
5315 static inline int
5316 unicode_width(unsigned long c)
5317 {
5318 if (c >= 0x1100 &&
5319 (c <= 0x115f /* Hangul Jamo */
5320 || c == 0x2329
5321 || c == 0x232a
5322 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5323 /* CJK ... Yi */
5324 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5325 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5326 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5327 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5328 || (c >= 0xffe0 && c <= 0xffe6)
5329 || (c >= 0x20000 && c <= 0x2fffd)
5330 || (c >= 0x30000 && c <= 0x3fffd)))
5331 return 2;
5333 if (c == '\t')
5334 return opt_tab_size;
5336 return 1;
5337 }
5339 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5340 * Illegal bytes are set one. */
5341 static const unsigned char utf8_bytes[256] = {
5342 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,
5343 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,
5344 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,
5345 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,
5346 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,
5347 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,
5348 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,
5349 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,
5350 };
5352 /* Decode UTF-8 multi-byte representation into a unicode character. */
5353 static inline unsigned long
5354 utf8_to_unicode(const char *string, size_t length)
5355 {
5356 unsigned long unicode;
5358 switch (length) {
5359 case 1:
5360 unicode = string[0];
5361 break;
5362 case 2:
5363 unicode = (string[0] & 0x1f) << 6;
5364 unicode += (string[1] & 0x3f);
5365 break;
5366 case 3:
5367 unicode = (string[0] & 0x0f) << 12;
5368 unicode += ((string[1] & 0x3f) << 6);
5369 unicode += (string[2] & 0x3f);
5370 break;
5371 case 4:
5372 unicode = (string[0] & 0x0f) << 18;
5373 unicode += ((string[1] & 0x3f) << 12);
5374 unicode += ((string[2] & 0x3f) << 6);
5375 unicode += (string[3] & 0x3f);
5376 break;
5377 case 5:
5378 unicode = (string[0] & 0x0f) << 24;
5379 unicode += ((string[1] & 0x3f) << 18);
5380 unicode += ((string[2] & 0x3f) << 12);
5381 unicode += ((string[3] & 0x3f) << 6);
5382 unicode += (string[4] & 0x3f);
5383 break;
5384 case 6:
5385 unicode = (string[0] & 0x01) << 30;
5386 unicode += ((string[1] & 0x3f) << 24);
5387 unicode += ((string[2] & 0x3f) << 18);
5388 unicode += ((string[3] & 0x3f) << 12);
5389 unicode += ((string[4] & 0x3f) << 6);
5390 unicode += (string[5] & 0x3f);
5391 break;
5392 default:
5393 die("Invalid unicode length");
5394 }
5396 /* Invalid characters could return the special 0xfffd value but NUL
5397 * should be just as good. */
5398 return unicode > 0xffff ? 0 : unicode;
5399 }
5401 /* Calculates how much of string can be shown within the given maximum width
5402 * and sets trimmed parameter to non-zero value if all of string could not be
5403 * shown. If the reserve flag is TRUE, it will reserve at least one
5404 * trailing character, which can be useful when drawing a delimiter.
5405 *
5406 * Returns the number of bytes to output from string to satisfy max_width. */
5407 static size_t
5408 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5409 {
5410 const char *start = string;
5411 const char *end = strchr(string, '\0');
5412 unsigned char last_bytes = 0;
5413 size_t last_ucwidth = 0;
5415 *width = 0;
5416 *trimmed = 0;
5418 while (string < end) {
5419 int c = *(unsigned char *) string;
5420 unsigned char bytes = utf8_bytes[c];
5421 size_t ucwidth;
5422 unsigned long unicode;
5424 if (string + bytes > end)
5425 break;
5427 /* Change representation to figure out whether
5428 * it is a single- or double-width character. */
5430 unicode = utf8_to_unicode(string, bytes);
5431 /* FIXME: Graceful handling of invalid unicode character. */
5432 if (!unicode)
5433 break;
5435 ucwidth = unicode_width(unicode);
5436 *width += ucwidth;
5437 if (*width > max_width) {
5438 *trimmed = 1;
5439 *width -= ucwidth;
5440 if (reserve && *width == max_width) {
5441 string -= last_bytes;
5442 *width -= last_ucwidth;
5443 }
5444 break;
5445 }
5447 string += bytes;
5448 last_bytes = bytes;
5449 last_ucwidth = ucwidth;
5450 }
5452 return string - start;
5453 }
5456 /*
5457 * Status management
5458 */
5460 /* Whether or not the curses interface has been initialized. */
5461 static bool cursed = FALSE;
5463 /* The status window is used for polling keystrokes. */
5464 static WINDOW *status_win;
5466 static bool status_empty = TRUE;
5468 /* Update status and title window. */
5469 static void
5470 report(const char *msg, ...)
5471 {
5472 struct view *view = display[current_view];
5474 if (input_mode)
5475 return;
5477 if (!view) {
5478 char buf[SIZEOF_STR];
5479 va_list args;
5481 va_start(args, msg);
5482 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5483 buf[sizeof(buf) - 1] = 0;
5484 buf[sizeof(buf) - 2] = '.';
5485 buf[sizeof(buf) - 3] = '.';
5486 buf[sizeof(buf) - 4] = '.';
5487 }
5488 va_end(args);
5489 die("%s", buf);
5490 }
5492 if (!status_empty || *msg) {
5493 va_list args;
5495 va_start(args, msg);
5497 wmove(status_win, 0, 0);
5498 if (*msg) {
5499 vwprintw(status_win, msg, args);
5500 status_empty = FALSE;
5501 } else {
5502 status_empty = TRUE;
5503 }
5504 wclrtoeol(status_win);
5505 wrefresh(status_win);
5507 va_end(args);
5508 }
5510 update_view_title(view);
5511 update_display_cursor(view);
5512 }
5514 /* Controls when nodelay should be in effect when polling user input. */
5515 static void
5516 set_nonblocking_input(bool loading)
5517 {
5518 static unsigned int loading_views;
5520 if ((loading == FALSE && loading_views-- == 1) ||
5521 (loading == TRUE && loading_views++ == 0))
5522 nodelay(status_win, loading);
5523 }
5525 static void
5526 init_display(void)
5527 {
5528 int x, y;
5530 /* Initialize the curses library */
5531 if (isatty(STDIN_FILENO)) {
5532 cursed = !!initscr();
5533 } else {
5534 /* Leave stdin and stdout alone when acting as a pager. */
5535 FILE *io = fopen("/dev/tty", "r+");
5537 if (!io)
5538 die("Failed to open /dev/tty");
5539 cursed = !!newterm(NULL, io, io);
5540 }
5542 if (!cursed)
5543 die("Failed to initialize curses");
5545 nonl(); /* Tell curses not to do NL->CR/NL on output */
5546 cbreak(); /* Take input chars one at a time, no wait for \n */
5547 noecho(); /* Don't echo input */
5548 leaveok(stdscr, TRUE);
5550 if (has_colors())
5551 init_colors();
5553 getmaxyx(stdscr, y, x);
5554 status_win = newwin(1, 0, y - 1, 0);
5555 if (!status_win)
5556 die("Failed to create status window");
5558 /* Enable keyboard mapping */
5559 keypad(status_win, TRUE);
5560 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5562 TABSIZE = opt_tab_size;
5563 if (opt_line_graphics) {
5564 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5565 }
5566 }
5568 static bool
5569 prompt_yesno(const char *prompt)
5570 {
5571 enum { WAIT, STOP, CANCEL } status = WAIT;
5572 bool answer = FALSE;
5574 while (status == WAIT) {
5575 struct view *view;
5576 int i, key;
5578 input_mode = TRUE;
5580 foreach_view (view, i)
5581 update_view(view);
5583 input_mode = FALSE;
5585 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
5586 wclrtoeol(status_win);
5588 /* Refresh, accept single keystroke of input */
5589 key = wgetch(status_win);
5590 switch (key) {
5591 case ERR:
5592 break;
5594 case 'y':
5595 case 'Y':
5596 answer = TRUE;
5597 status = STOP;
5598 break;
5600 case KEY_ESC:
5601 case KEY_RETURN:
5602 case KEY_ENTER:
5603 case KEY_BACKSPACE:
5604 case 'n':
5605 case 'N':
5606 case '\n':
5607 default:
5608 answer = FALSE;
5609 status = CANCEL;
5610 }
5611 }
5613 /* Clear the status window */
5614 status_empty = FALSE;
5615 report("");
5617 return answer;
5618 }
5620 static char *
5621 read_prompt(const char *prompt)
5622 {
5623 enum { READING, STOP, CANCEL } status = READING;
5624 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
5625 int pos = 0;
5627 while (status == READING) {
5628 struct view *view;
5629 int i, key;
5631 input_mode = TRUE;
5633 foreach_view (view, i)
5634 update_view(view);
5636 input_mode = FALSE;
5638 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5639 wclrtoeol(status_win);
5641 /* Refresh, accept single keystroke of input */
5642 key = wgetch(status_win);
5643 switch (key) {
5644 case KEY_RETURN:
5645 case KEY_ENTER:
5646 case '\n':
5647 status = pos ? STOP : CANCEL;
5648 break;
5650 case KEY_BACKSPACE:
5651 if (pos > 0)
5652 pos--;
5653 else
5654 status = CANCEL;
5655 break;
5657 case KEY_ESC:
5658 status = CANCEL;
5659 break;
5661 case ERR:
5662 break;
5664 default:
5665 if (pos >= sizeof(buf)) {
5666 report("Input string too long");
5667 return NULL;
5668 }
5670 if (isprint(key))
5671 buf[pos++] = (char) key;
5672 }
5673 }
5675 /* Clear the status window */
5676 status_empty = FALSE;
5677 report("");
5679 if (status == CANCEL)
5680 return NULL;
5682 buf[pos++] = 0;
5684 return buf;
5685 }
5687 /*
5688 * Repository references
5689 */
5691 static struct ref *refs = NULL;
5692 static size_t refs_alloc = 0;
5693 static size_t refs_size = 0;
5695 /* Id <-> ref store */
5696 static struct ref ***id_refs = NULL;
5697 static size_t id_refs_alloc = 0;
5698 static size_t id_refs_size = 0;
5700 static int
5701 compare_refs(const void *ref1_, const void *ref2_)
5702 {
5703 const struct ref *ref1 = *(const struct ref **)ref1_;
5704 const struct ref *ref2 = *(const struct ref **)ref2_;
5706 if (ref1->tag != ref2->tag)
5707 return ref2->tag - ref1->tag;
5708 if (ref1->ltag != ref2->ltag)
5709 return ref2->ltag - ref2->ltag;
5710 if (ref1->head != ref2->head)
5711 return ref2->head - ref1->head;
5712 if (ref1->tracked != ref2->tracked)
5713 return ref2->tracked - ref1->tracked;
5714 if (ref1->remote != ref2->remote)
5715 return ref2->remote - ref1->remote;
5716 return strcmp(ref1->name, ref2->name);
5717 }
5719 static struct ref **
5720 get_refs(const char *id)
5721 {
5722 struct ref ***tmp_id_refs;
5723 struct ref **ref_list = NULL;
5724 size_t ref_list_alloc = 0;
5725 size_t ref_list_size = 0;
5726 size_t i;
5728 for (i = 0; i < id_refs_size; i++)
5729 if (!strcmp(id, id_refs[i][0]->id))
5730 return id_refs[i];
5732 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
5733 sizeof(*id_refs));
5734 if (!tmp_id_refs)
5735 return NULL;
5737 id_refs = tmp_id_refs;
5739 for (i = 0; i < refs_size; i++) {
5740 struct ref **tmp;
5742 if (strcmp(id, refs[i].id))
5743 continue;
5745 tmp = realloc_items(ref_list, &ref_list_alloc,
5746 ref_list_size + 1, sizeof(*ref_list));
5747 if (!tmp) {
5748 if (ref_list)
5749 free(ref_list);
5750 return NULL;
5751 }
5753 ref_list = tmp;
5754 ref_list[ref_list_size] = &refs[i];
5755 /* XXX: The properties of the commit chains ensures that we can
5756 * safely modify the shared ref. The repo references will
5757 * always be similar for the same id. */
5758 ref_list[ref_list_size]->next = 1;
5760 ref_list_size++;
5761 }
5763 if (ref_list) {
5764 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
5765 ref_list[ref_list_size - 1]->next = 0;
5766 id_refs[id_refs_size++] = ref_list;
5767 }
5769 return ref_list;
5770 }
5772 static int
5773 read_ref(char *id, size_t idlen, char *name, size_t namelen)
5774 {
5775 struct ref *ref;
5776 bool tag = FALSE;
5777 bool ltag = FALSE;
5778 bool remote = FALSE;
5779 bool tracked = FALSE;
5780 bool check_replace = FALSE;
5781 bool head = FALSE;
5783 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
5784 if (!strcmp(name + namelen - 3, "^{}")) {
5785 namelen -= 3;
5786 name[namelen] = 0;
5787 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
5788 check_replace = TRUE;
5789 } else {
5790 ltag = TRUE;
5791 }
5793 tag = TRUE;
5794 namelen -= STRING_SIZE("refs/tags/");
5795 name += STRING_SIZE("refs/tags/");
5797 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
5798 remote = TRUE;
5799 namelen -= STRING_SIZE("refs/remotes/");
5800 name += STRING_SIZE("refs/remotes/");
5801 tracked = !strcmp(opt_remote, name);
5803 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5804 namelen -= STRING_SIZE("refs/heads/");
5805 name += STRING_SIZE("refs/heads/");
5806 head = !strncmp(opt_head, name, namelen);
5808 } else if (!strcmp(name, "HEAD")) {
5809 opt_no_head = FALSE;
5810 return OK;
5811 }
5813 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
5814 /* it's an annotated tag, replace the previous sha1 with the
5815 * resolved commit id; relies on the fact git-ls-remote lists
5816 * the commit id of an annotated tag right before the commit id
5817 * it points to. */
5818 refs[refs_size - 1].ltag = ltag;
5819 string_copy_rev(refs[refs_size - 1].id, id);
5821 return OK;
5822 }
5823 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
5824 if (!refs)
5825 return ERR;
5827 ref = &refs[refs_size++];
5828 ref->name = malloc(namelen + 1);
5829 if (!ref->name)
5830 return ERR;
5832 strncpy(ref->name, name, namelen);
5833 ref->name[namelen] = 0;
5834 ref->head = head;
5835 ref->tag = tag;
5836 ref->ltag = ltag;
5837 ref->remote = remote;
5838 ref->tracked = tracked;
5839 string_copy_rev(ref->id, id);
5841 return OK;
5842 }
5844 static int
5845 load_refs(void)
5846 {
5847 const char *cmd_env = getenv("TIG_LS_REMOTE");
5848 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
5850 if (!*opt_git_dir)
5851 return OK;
5853 while (refs_size > 0)
5854 free(refs[--refs_size].name);
5855 while (id_refs_size > 0)
5856 free(id_refs[--id_refs_size]);
5858 return read_properties(popen(cmd, "r"), "\t", read_ref);
5859 }
5861 static int
5862 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
5863 {
5864 if (!strcmp(name, "i18n.commitencoding"))
5865 string_ncopy(opt_encoding, value, valuelen);
5867 if (!strcmp(name, "core.editor"))
5868 string_ncopy(opt_editor, value, valuelen);
5870 /* branch.<head>.remote */
5871 if (*opt_head &&
5872 !strncmp(name, "branch.", 7) &&
5873 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5874 !strcmp(name + 7 + strlen(opt_head), ".remote"))
5875 string_ncopy(opt_remote, value, valuelen);
5877 if (*opt_head && *opt_remote &&
5878 !strncmp(name, "branch.", 7) &&
5879 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5880 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
5881 size_t from = strlen(opt_remote);
5883 if (!strncmp(value, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5884 value += STRING_SIZE("refs/heads/");
5885 valuelen -= STRING_SIZE("refs/heads/");
5886 }
5888 if (!string_format_from(opt_remote, &from, "/%s", value))
5889 opt_remote[0] = 0;
5890 }
5892 return OK;
5893 }
5895 static int
5896 load_git_config(void)
5897 {
5898 return read_properties(popen("git " GIT_CONFIG " --list", "r"),
5899 "=", read_repo_config_option);
5900 }
5902 static int
5903 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
5904 {
5905 if (!opt_git_dir[0]) {
5906 string_ncopy(opt_git_dir, name, namelen);
5908 } else if (opt_is_inside_work_tree == -1) {
5909 /* This can be 3 different values depending on the
5910 * version of git being used. If git-rev-parse does not
5911 * understand --is-inside-work-tree it will simply echo
5912 * the option else either "true" or "false" is printed.
5913 * Default to true for the unknown case. */
5914 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
5916 } else if (opt_cdup[0] == ' ') {
5917 string_ncopy(opt_cdup, name, namelen);
5918 } else {
5919 if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5920 namelen -= STRING_SIZE("refs/heads/");
5921 name += STRING_SIZE("refs/heads/");
5922 string_ncopy(opt_head, name, namelen);
5923 }
5924 }
5926 return OK;
5927 }
5929 static int
5930 load_repo_info(void)
5931 {
5932 int result;
5933 FILE *pipe = popen("(git rev-parse --git-dir --is-inside-work-tree "
5934 " --show-cdup; git symbolic-ref HEAD) 2>/dev/null", "r");
5936 /* XXX: The line outputted by "--show-cdup" can be empty so
5937 * initialize it to something invalid to make it possible to
5938 * detect whether it has been set or not. */
5939 opt_cdup[0] = ' ';
5941 result = read_properties(pipe, "=", read_repo_info);
5942 if (opt_cdup[0] == ' ')
5943 opt_cdup[0] = 0;
5945 return result;
5946 }
5948 static int
5949 read_properties(FILE *pipe, const char *separators,
5950 int (*read_property)(char *, size_t, char *, size_t))
5951 {
5952 char buffer[BUFSIZ];
5953 char *name;
5954 int state = OK;
5956 if (!pipe)
5957 return ERR;
5959 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
5960 char *value;
5961 size_t namelen;
5962 size_t valuelen;
5964 name = chomp_string(name);
5965 namelen = strcspn(name, separators);
5967 if (name[namelen]) {
5968 name[namelen] = 0;
5969 value = chomp_string(name + namelen + 1);
5970 valuelen = strlen(value);
5972 } else {
5973 value = "";
5974 valuelen = 0;
5975 }
5977 state = read_property(name, namelen, value, valuelen);
5978 }
5980 if (state != ERR && ferror(pipe))
5981 state = ERR;
5983 pclose(pipe);
5985 return state;
5986 }
5989 /*
5990 * Main
5991 */
5993 static void __NORETURN
5994 quit(int sig)
5995 {
5996 /* XXX: Restore tty modes and let the OS cleanup the rest! */
5997 if (cursed)
5998 endwin();
5999 exit(0);
6000 }
6002 static void __NORETURN
6003 die(const char *err, ...)
6004 {
6005 va_list args;
6007 endwin();
6009 va_start(args, err);
6010 fputs("tig: ", stderr);
6011 vfprintf(stderr, err, args);
6012 fputs("\n", stderr);
6013 va_end(args);
6015 exit(1);
6016 }
6018 static void
6019 warn(const char *msg, ...)
6020 {
6021 va_list args;
6023 va_start(args, msg);
6024 fputs("tig warning: ", stderr);
6025 vfprintf(stderr, msg, args);
6026 fputs("\n", stderr);
6027 va_end(args);
6028 }
6030 int
6031 main(int argc, const char *argv[])
6032 {
6033 struct view *view;
6034 enum request request;
6035 size_t i;
6037 signal(SIGINT, quit);
6039 if (setlocale(LC_ALL, "")) {
6040 char *codeset = nl_langinfo(CODESET);
6042 string_ncopy(opt_codeset, codeset, strlen(codeset));
6043 }
6045 if (load_repo_info() == ERR)
6046 die("Failed to load repo info.");
6048 if (load_options() == ERR)
6049 die("Failed to load user config.");
6051 if (load_git_config() == ERR)
6052 die("Failed to load repo config.");
6054 request = parse_options(argc, argv);
6055 if (request == REQ_NONE)
6056 return 0;
6058 /* Require a git repository unless when running in pager mode. */
6059 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6060 die("Not a git repository");
6062 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6063 opt_utf8 = FALSE;
6065 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6066 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6067 if (opt_iconv == ICONV_NONE)
6068 die("Failed to initialize character set conversion");
6069 }
6071 if (load_refs() == ERR)
6072 die("Failed to load refs.");
6074 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
6075 view->cmd_env = getenv(view->cmd_env);
6077 init_display();
6079 while (view_driver(display[current_view], request)) {
6080 int key;
6081 int i;
6083 foreach_view (view, i)
6084 update_view(view);
6086 /* Refresh, accept single keystroke of input */
6087 key = wgetch(status_win);
6089 /* wgetch() with nodelay() enabled returns ERR when there's no
6090 * input. */
6091 if (key == ERR) {
6092 request = REQ_NONE;
6093 continue;
6094 }
6096 request = get_keybinding(display[current_view]->keymap, key);
6098 /* Some low-level request handling. This keeps access to
6099 * status_win restricted. */
6100 switch (request) {
6101 case REQ_PROMPT:
6102 {
6103 char *cmd = read_prompt(":");
6105 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
6106 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
6107 request = REQ_VIEW_DIFF;
6108 } else {
6109 request = REQ_VIEW_PAGER;
6110 }
6112 /* Always reload^Wrerun commands from the prompt. */
6113 open_view(view, request, OPEN_RELOAD);
6114 }
6116 request = REQ_NONE;
6117 break;
6118 }
6119 case REQ_SEARCH:
6120 case REQ_SEARCH_BACK:
6121 {
6122 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6123 char *search = read_prompt(prompt);
6125 if (search)
6126 string_ncopy(opt_search, search, strlen(search));
6127 else
6128 request = REQ_NONE;
6129 break;
6130 }
6131 case REQ_SCREEN_RESIZE:
6132 {
6133 int height, width;
6135 getmaxyx(stdscr, height, width);
6137 /* Resize the status view and let the view driver take
6138 * care of resizing the displayed views. */
6139 wresize(status_win, 1, width);
6140 mvwin(status_win, height - 1, 0);
6141 wrefresh(status_win);
6142 break;
6143 }
6144 default:
6145 break;
6146 }
6147 }
6149 quit(0);
6151 return 0;
6152 }