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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(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("Cursor navigation") \
353 REQ_(MOVE_UP, "Move cursor one line up"), \
354 REQ_(MOVE_DOWN, "Move cursor one line down"), \
355 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
356 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
357 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
358 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
359 \
360 REQ_GROUP("Scrolling") \
361 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
362 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
363 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
364 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
365 \
366 REQ_GROUP("Searching") \
367 REQ_(SEARCH, "Search the view"), \
368 REQ_(SEARCH_BACK, "Search backwards in the view"), \
369 REQ_(FIND_NEXT, "Find next search match"), \
370 REQ_(FIND_PREV, "Find previous search match"), \
371 \
372 REQ_GROUP("Misc") \
373 REQ_(PROMPT, "Bring up the prompt"), \
374 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
375 REQ_(SCREEN_RESIZE, "Resize the screen"), \
376 REQ_(SHOW_VERSION, "Show version information"), \
377 REQ_(STOP_LOADING, "Stop all loading views"), \
378 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
379 REQ_(TOGGLE_DATE, "Toggle date display"), \
380 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
381 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
382 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
383 REQ_(STATUS_UPDATE, "Update file status"), \
384 REQ_(STATUS_CHECKOUT, "Checkout file"), \
385 REQ_(STATUS_MERGE, "Merge file using external tool"), \
386 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
387 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
388 REQ_(EDIT, "Open in editor"), \
389 REQ_(NONE, "Do nothing")
392 /* User action requests. */
393 enum request {
394 #define REQ_GROUP(help)
395 #define REQ_(req, help) REQ_##req
397 /* Offset all requests to avoid conflicts with ncurses getch values. */
398 REQ_OFFSET = KEY_MAX + 1,
399 REQ_INFO
401 #undef REQ_GROUP
402 #undef REQ_
403 };
405 struct request_info {
406 enum request request;
407 char *name;
408 int namelen;
409 char *help;
410 };
412 static struct request_info req_info[] = {
413 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
414 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
415 REQ_INFO
416 #undef REQ_GROUP
417 #undef REQ_
418 };
420 static enum request
421 get_request(const char *name)
422 {
423 int namelen = strlen(name);
424 int i;
426 for (i = 0; i < ARRAY_SIZE(req_info); i++)
427 if (req_info[i].namelen == namelen &&
428 !string_enum_compare(req_info[i].name, name, namelen))
429 return req_info[i].request;
431 return REQ_NONE;
432 }
435 /*
436 * Options
437 */
439 static const char usage[] =
440 "tig " TIG_VERSION " (" __DATE__ ")\n"
441 "\n"
442 "Usage: tig [options] [revs] [--] [paths]\n"
443 " or: tig show [options] [revs] [--] [paths]\n"
444 " or: tig blame [rev] path\n"
445 " or: tig status\n"
446 " or: tig < [git command output]\n"
447 "\n"
448 "Options:\n"
449 " -v, --version Show version and exit\n"
450 " -h, --help Show help message and exit";
452 /* Option and state variables. */
453 static bool opt_date = TRUE;
454 static bool opt_author = TRUE;
455 static bool opt_line_number = FALSE;
456 static bool opt_line_graphics = TRUE;
457 static bool opt_rev_graph = FALSE;
458 static bool opt_show_refs = TRUE;
459 static int opt_num_interval = NUMBER_INTERVAL;
460 static int opt_tab_size = TAB_SIZE;
461 static int opt_author_cols = AUTHOR_COLS-1;
462 static char opt_cmd[SIZEOF_STR] = "";
463 static char opt_path[SIZEOF_STR] = "";
464 static char opt_file[SIZEOF_STR] = "";
465 static char opt_ref[SIZEOF_REF] = "";
466 static char opt_head[SIZEOF_REF] = "";
467 static char opt_remote[SIZEOF_REF] = "";
468 static bool opt_no_head = TRUE;
469 static FILE *opt_pipe = NULL;
470 static char opt_encoding[20] = "UTF-8";
471 static bool opt_utf8 = TRUE;
472 static char opt_codeset[20] = "UTF-8";
473 static iconv_t opt_iconv = ICONV_NONE;
474 static char opt_search[SIZEOF_STR] = "";
475 static char opt_cdup[SIZEOF_STR] = "";
476 static char opt_git_dir[SIZEOF_STR] = "";
477 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
478 static char opt_editor[SIZEOF_STR] = "";
480 static enum request
481 parse_options(int argc, char *argv[])
482 {
483 enum request request = REQ_VIEW_MAIN;
484 size_t buf_size;
485 char *subcommand;
486 bool seen_dashdash = FALSE;
487 int i;
489 if (!isatty(STDIN_FILENO)) {
490 opt_pipe = stdin;
491 return REQ_VIEW_PAGER;
492 }
494 if (argc <= 1)
495 return REQ_VIEW_MAIN;
497 subcommand = argv[1];
498 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
499 if (!strcmp(subcommand, "-S"))
500 warn("`-S' has been deprecated; use `tig status' instead");
501 if (argc > 2)
502 warn("ignoring arguments after `%s'", subcommand);
503 return REQ_VIEW_STATUS;
505 } else if (!strcmp(subcommand, "blame")) {
506 if (argc <= 2 || argc > 4)
507 die("invalid number of options to blame\n\n%s", usage);
509 i = 2;
510 if (argc == 4) {
511 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
512 i++;
513 }
515 string_ncopy(opt_file, argv[i], strlen(argv[i]));
516 return REQ_VIEW_BLAME;
518 } else if (!strcmp(subcommand, "show")) {
519 request = REQ_VIEW_DIFF;
521 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
522 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
523 warn("`tig %s' has been deprecated", subcommand);
525 } else {
526 subcommand = NULL;
527 }
529 if (!subcommand)
530 /* XXX: This is vulnerable to the user overriding
531 * options required for the main view parser. */
532 string_copy(opt_cmd, TIG_MAIN_BASE);
533 else
534 string_format(opt_cmd, "git %s", subcommand);
536 buf_size = strlen(opt_cmd);
538 for (i = 1 + !!subcommand; i < argc; i++) {
539 char *opt = argv[i];
541 if (seen_dashdash || !strcmp(opt, "--")) {
542 seen_dashdash = TRUE;
544 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
545 printf("tig version %s\n", TIG_VERSION);
546 return REQ_NONE;
548 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
549 printf("%s\n", usage);
550 return REQ_NONE;
551 }
553 opt_cmd[buf_size++] = ' ';
554 buf_size = sq_quote(opt_cmd, buf_size, opt);
555 if (buf_size >= sizeof(opt_cmd))
556 die("command too long");
557 }
559 opt_cmd[buf_size] = 0;
561 return request;
562 }
565 /*
566 * Line-oriented content detection.
567 */
569 #define LINE_INFO \
570 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
571 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
572 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
573 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
574 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
575 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
576 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
577 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
578 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
579 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
580 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
583 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
584 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
585 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
586 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
587 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
588 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
589 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
590 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
591 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
592 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
593 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
594 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
595 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
596 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
597 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
598 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
599 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
600 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
601 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
602 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
603 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
604 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
605 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
606 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
607 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
608 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
609 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
610 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
611 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
612 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
613 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
614 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
615 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
616 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
617 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
618 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
619 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
620 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
621 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
622 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
623 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
625 enum line_type {
626 #define LINE(type, line, fg, bg, attr) \
627 LINE_##type
628 LINE_INFO,
629 LINE_NONE
630 #undef LINE
631 };
633 struct line_info {
634 const char *name; /* Option name. */
635 int namelen; /* Size of option name. */
636 const char *line; /* The start of line to match. */
637 int linelen; /* Size of string to match. */
638 int fg, bg, attr; /* Color and text attributes for the lines. */
639 };
641 static struct line_info line_info[] = {
642 #define LINE(type, line, fg, bg, attr) \
643 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
644 LINE_INFO
645 #undef LINE
646 };
648 static enum line_type
649 get_line_type(const char *line)
650 {
651 int linelen = strlen(line);
652 enum line_type type;
654 for (type = 0; type < ARRAY_SIZE(line_info); type++)
655 /* Case insensitive search matches Signed-off-by lines better. */
656 if (linelen >= line_info[type].linelen &&
657 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
658 return type;
660 return LINE_DEFAULT;
661 }
663 static inline int
664 get_line_attr(enum line_type type)
665 {
666 assert(type < ARRAY_SIZE(line_info));
667 return COLOR_PAIR(type) | line_info[type].attr;
668 }
670 static struct line_info *
671 get_line_info(const char *name)
672 {
673 size_t namelen = strlen(name);
674 enum line_type type;
676 for (type = 0; type < ARRAY_SIZE(line_info); type++)
677 if (namelen == line_info[type].namelen &&
678 !string_enum_compare(line_info[type].name, name, namelen))
679 return &line_info[type];
681 return NULL;
682 }
684 static void
685 init_colors(void)
686 {
687 int default_bg = line_info[LINE_DEFAULT].bg;
688 int default_fg = line_info[LINE_DEFAULT].fg;
689 enum line_type type;
691 start_color();
693 if (assume_default_colors(default_fg, default_bg) == ERR) {
694 default_bg = COLOR_BLACK;
695 default_fg = COLOR_WHITE;
696 }
698 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
699 struct line_info *info = &line_info[type];
700 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
701 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
703 init_pair(type, fg, bg);
704 }
705 }
707 struct line {
708 enum line_type type;
710 /* State flags */
711 unsigned int selected:1;
712 unsigned int dirty:1;
714 void *data; /* User data */
715 };
718 /*
719 * Keys
720 */
722 struct keybinding {
723 int alias;
724 enum request request;
725 struct keybinding *next;
726 };
728 static struct keybinding default_keybindings[] = {
729 /* View switching */
730 { 'm', REQ_VIEW_MAIN },
731 { 'd', REQ_VIEW_DIFF },
732 { 'l', REQ_VIEW_LOG },
733 { 't', REQ_VIEW_TREE },
734 { 'f', REQ_VIEW_BLOB },
735 { 'B', REQ_VIEW_BLAME },
736 { 'p', REQ_VIEW_PAGER },
737 { 'h', REQ_VIEW_HELP },
738 { 'S', REQ_VIEW_STATUS },
739 { 'c', REQ_VIEW_STAGE },
741 /* View manipulation */
742 { 'q', REQ_VIEW_CLOSE },
743 { KEY_TAB, REQ_VIEW_NEXT },
744 { KEY_RETURN, REQ_ENTER },
745 { KEY_UP, REQ_PREVIOUS },
746 { KEY_DOWN, REQ_NEXT },
747 { 'R', REQ_REFRESH },
748 { KEY_F(5), REQ_REFRESH },
749 { 'O', REQ_MAXIMIZE },
751 /* Cursor navigation */
752 { 'k', REQ_MOVE_UP },
753 { 'j', REQ_MOVE_DOWN },
754 { KEY_HOME, REQ_MOVE_FIRST_LINE },
755 { KEY_END, REQ_MOVE_LAST_LINE },
756 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
757 { ' ', REQ_MOVE_PAGE_DOWN },
758 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
759 { 'b', REQ_MOVE_PAGE_UP },
760 { '-', REQ_MOVE_PAGE_UP },
762 /* Scrolling */
763 { KEY_IC, REQ_SCROLL_LINE_UP },
764 { KEY_DC, REQ_SCROLL_LINE_DOWN },
765 { 'w', REQ_SCROLL_PAGE_UP },
766 { 's', REQ_SCROLL_PAGE_DOWN },
768 /* Searching */
769 { '/', REQ_SEARCH },
770 { '?', REQ_SEARCH_BACK },
771 { 'n', REQ_FIND_NEXT },
772 { 'N', REQ_FIND_PREV },
774 /* Misc */
775 { 'Q', REQ_QUIT },
776 { 'z', REQ_STOP_LOADING },
777 { 'v', REQ_SHOW_VERSION },
778 { 'r', REQ_SCREEN_REDRAW },
779 { '.', REQ_TOGGLE_LINENO },
780 { 'D', REQ_TOGGLE_DATE },
781 { 'A', REQ_TOGGLE_AUTHOR },
782 { 'g', REQ_TOGGLE_REV_GRAPH },
783 { 'F', REQ_TOGGLE_REFS },
784 { ':', REQ_PROMPT },
785 { 'u', REQ_STATUS_UPDATE },
786 { '!', REQ_STATUS_CHECKOUT },
787 { 'M', REQ_STATUS_MERGE },
788 { '@', REQ_STAGE_NEXT },
789 { ',', REQ_TREE_PARENT },
790 { 'e', REQ_EDIT },
792 /* Using the ncurses SIGWINCH handler. */
793 { KEY_RESIZE, REQ_SCREEN_RESIZE },
794 };
796 #define KEYMAP_INFO \
797 KEYMAP_(GENERIC), \
798 KEYMAP_(MAIN), \
799 KEYMAP_(DIFF), \
800 KEYMAP_(LOG), \
801 KEYMAP_(TREE), \
802 KEYMAP_(BLOB), \
803 KEYMAP_(BLAME), \
804 KEYMAP_(PAGER), \
805 KEYMAP_(HELP), \
806 KEYMAP_(STATUS), \
807 KEYMAP_(STAGE)
809 enum keymap {
810 #define KEYMAP_(name) KEYMAP_##name
811 KEYMAP_INFO
812 #undef KEYMAP_
813 };
815 static struct int_map keymap_table[] = {
816 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
817 KEYMAP_INFO
818 #undef KEYMAP_
819 };
821 #define set_keymap(map, name) \
822 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
824 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
826 static void
827 add_keybinding(enum keymap keymap, enum request request, int key)
828 {
829 struct keybinding *keybinding;
831 keybinding = calloc(1, sizeof(*keybinding));
832 if (!keybinding)
833 die("Failed to allocate keybinding");
835 keybinding->alias = key;
836 keybinding->request = request;
837 keybinding->next = keybindings[keymap];
838 keybindings[keymap] = keybinding;
839 }
841 /* Looks for a key binding first in the given map, then in the generic map, and
842 * lastly in the default keybindings. */
843 static enum request
844 get_keybinding(enum keymap keymap, int key)
845 {
846 struct keybinding *kbd;
847 int i;
849 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
850 if (kbd->alias == key)
851 return kbd->request;
853 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
854 if (kbd->alias == key)
855 return kbd->request;
857 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
858 if (default_keybindings[i].alias == key)
859 return default_keybindings[i].request;
861 return (enum request) key;
862 }
865 struct key {
866 char *name;
867 int value;
868 };
870 static struct key key_table[] = {
871 { "Enter", KEY_RETURN },
872 { "Space", ' ' },
873 { "Backspace", KEY_BACKSPACE },
874 { "Tab", KEY_TAB },
875 { "Escape", KEY_ESC },
876 { "Left", KEY_LEFT },
877 { "Right", KEY_RIGHT },
878 { "Up", KEY_UP },
879 { "Down", KEY_DOWN },
880 { "Insert", KEY_IC },
881 { "Delete", KEY_DC },
882 { "Hash", '#' },
883 { "Home", KEY_HOME },
884 { "End", KEY_END },
885 { "PageUp", KEY_PPAGE },
886 { "PageDown", KEY_NPAGE },
887 { "F1", KEY_F(1) },
888 { "F2", KEY_F(2) },
889 { "F3", KEY_F(3) },
890 { "F4", KEY_F(4) },
891 { "F5", KEY_F(5) },
892 { "F6", KEY_F(6) },
893 { "F7", KEY_F(7) },
894 { "F8", KEY_F(8) },
895 { "F9", KEY_F(9) },
896 { "F10", KEY_F(10) },
897 { "F11", KEY_F(11) },
898 { "F12", KEY_F(12) },
899 };
901 static int
902 get_key_value(const char *name)
903 {
904 int i;
906 for (i = 0; i < ARRAY_SIZE(key_table); i++)
907 if (!strcasecmp(key_table[i].name, name))
908 return key_table[i].value;
910 if (strlen(name) == 1 && isprint(*name))
911 return (int) *name;
913 return ERR;
914 }
916 static char *
917 get_key_name(int key_value)
918 {
919 static char key_char[] = "'X'";
920 char *seq = NULL;
921 int key;
923 for (key = 0; key < ARRAY_SIZE(key_table); key++)
924 if (key_table[key].value == key_value)
925 seq = key_table[key].name;
927 if (seq == NULL &&
928 key_value < 127 &&
929 isprint(key_value)) {
930 key_char[1] = (char) key_value;
931 seq = key_char;
932 }
934 return seq ? seq : "'?'";
935 }
937 static char *
938 get_key(enum request request)
939 {
940 static char buf[BUFSIZ];
941 size_t pos = 0;
942 char *sep = "";
943 int i;
945 buf[pos] = 0;
947 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
948 struct keybinding *keybinding = &default_keybindings[i];
950 if (keybinding->request != request)
951 continue;
953 if (!string_format_from(buf, &pos, "%s%s", sep,
954 get_key_name(keybinding->alias)))
955 return "Too many keybindings!";
956 sep = ", ";
957 }
959 return buf;
960 }
962 struct run_request {
963 enum keymap keymap;
964 int key;
965 char cmd[SIZEOF_STR];
966 };
968 static struct run_request *run_request;
969 static size_t run_requests;
971 static enum request
972 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
973 {
974 struct run_request *req;
975 char cmd[SIZEOF_STR];
976 size_t bufpos;
978 for (bufpos = 0; argc > 0; argc--, argv++)
979 if (!string_format_from(cmd, &bufpos, "%s ", *argv))
980 return REQ_NONE;
982 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
983 if (!req)
984 return REQ_NONE;
986 run_request = req;
987 req = &run_request[run_requests++];
988 string_copy(req->cmd, cmd);
989 req->keymap = keymap;
990 req->key = key;
992 return REQ_NONE + run_requests;
993 }
995 static struct run_request *
996 get_run_request(enum request request)
997 {
998 if (request <= REQ_NONE)
999 return NULL;
1000 return &run_request[request - REQ_NONE - 1];
1001 }
1003 static void
1004 add_builtin_run_requests(void)
1005 {
1006 struct {
1007 enum keymap keymap;
1008 int key;
1009 const char *argv[1];
1010 } reqs[] = {
1011 { KEYMAP_MAIN, 'C', { "git cherry-pick %(commit)" } },
1012 { KEYMAP_GENERIC, 'G', { "git gc" } },
1013 };
1014 int i;
1016 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1017 enum request req;
1019 req = add_run_request(reqs[i].keymap, reqs[i].key, 1, reqs[i].argv);
1020 if (req != REQ_NONE)
1021 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1022 }
1023 }
1025 /*
1026 * User config file handling.
1027 */
1029 static struct int_map color_map[] = {
1030 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1031 COLOR_MAP(DEFAULT),
1032 COLOR_MAP(BLACK),
1033 COLOR_MAP(BLUE),
1034 COLOR_MAP(CYAN),
1035 COLOR_MAP(GREEN),
1036 COLOR_MAP(MAGENTA),
1037 COLOR_MAP(RED),
1038 COLOR_MAP(WHITE),
1039 COLOR_MAP(YELLOW),
1040 };
1042 #define set_color(color, name) \
1043 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1045 static struct int_map attr_map[] = {
1046 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1047 ATTR_MAP(NORMAL),
1048 ATTR_MAP(BLINK),
1049 ATTR_MAP(BOLD),
1050 ATTR_MAP(DIM),
1051 ATTR_MAP(REVERSE),
1052 ATTR_MAP(STANDOUT),
1053 ATTR_MAP(UNDERLINE),
1054 };
1056 #define set_attribute(attr, name) \
1057 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1059 static int config_lineno;
1060 static bool config_errors;
1061 static char *config_msg;
1063 /* Wants: object fgcolor bgcolor [attr] */
1064 static int
1065 option_color_command(int argc, const char *argv[])
1066 {
1067 struct line_info *info;
1069 if (argc != 3 && argc != 4) {
1070 config_msg = "Wrong number of arguments given to color command";
1071 return ERR;
1072 }
1074 info = get_line_info(argv[0]);
1075 if (!info) {
1076 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1077 info = get_line_info("delimiter");
1079 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1080 info = get_line_info("date");
1082 } else {
1083 config_msg = "Unknown color name";
1084 return ERR;
1085 }
1086 }
1088 if (set_color(&info->fg, argv[1]) == ERR ||
1089 set_color(&info->bg, argv[2]) == ERR) {
1090 config_msg = "Unknown color";
1091 return ERR;
1092 }
1094 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1095 config_msg = "Unknown attribute";
1096 return ERR;
1097 }
1099 return OK;
1100 }
1102 static bool parse_bool(const char *s)
1103 {
1104 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1105 !strcmp(s, "yes")) ? TRUE : FALSE;
1106 }
1108 static int
1109 parse_int(const char *s, int default_value, int min, int max)
1110 {
1111 int value = atoi(s);
1113 return (value < min || value > max) ? default_value : value;
1114 }
1116 /* Wants: name = value */
1117 static int
1118 option_set_command(int argc, const char *argv[])
1119 {
1120 if (argc != 3) {
1121 config_msg = "Wrong number of arguments given to set command";
1122 return ERR;
1123 }
1125 if (strcmp(argv[1], "=")) {
1126 config_msg = "No value assigned";
1127 return ERR;
1128 }
1130 if (!strcmp(argv[0], "show-author")) {
1131 opt_author = parse_bool(argv[2]);
1132 return OK;
1133 }
1135 if (!strcmp(argv[0], "show-date")) {
1136 opt_date = parse_bool(argv[2]);
1137 return OK;
1138 }
1140 if (!strcmp(argv[0], "show-rev-graph")) {
1141 opt_rev_graph = parse_bool(argv[2]);
1142 return OK;
1143 }
1145 if (!strcmp(argv[0], "show-refs")) {
1146 opt_show_refs = parse_bool(argv[2]);
1147 return OK;
1148 }
1150 if (!strcmp(argv[0], "show-line-numbers")) {
1151 opt_line_number = parse_bool(argv[2]);
1152 return OK;
1153 }
1155 if (!strcmp(argv[0], "line-graphics")) {
1156 opt_line_graphics = parse_bool(argv[2]);
1157 return OK;
1158 }
1160 if (!strcmp(argv[0], "line-number-interval")) {
1161 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1162 return OK;
1163 }
1165 if (!strcmp(argv[0], "author-width")) {
1166 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1167 return OK;
1168 }
1170 if (!strcmp(argv[0], "tab-size")) {
1171 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1172 return OK;
1173 }
1175 if (!strcmp(argv[0], "commit-encoding")) {
1176 const char *arg = argv[2];
1177 int arglen = strlen(arg);
1179 switch (arg[0]) {
1180 case '"':
1181 case '\'':
1182 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1183 config_msg = "Unmatched quotation";
1184 return ERR;
1185 }
1186 arg += 1; arglen -= 2;
1187 default:
1188 string_ncopy(opt_encoding, arg, strlen(arg));
1189 return OK;
1190 }
1191 }
1193 config_msg = "Unknown variable name";
1194 return ERR;
1195 }
1197 /* Wants: mode request key */
1198 static int
1199 option_bind_command(int argc, const char *argv[])
1200 {
1201 enum request request;
1202 int keymap;
1203 int key;
1205 if (argc < 3) {
1206 config_msg = "Wrong number of arguments given to bind command";
1207 return ERR;
1208 }
1210 if (set_keymap(&keymap, argv[0]) == ERR) {
1211 config_msg = "Unknown key map";
1212 return ERR;
1213 }
1215 key = get_key_value(argv[1]);
1216 if (key == ERR) {
1217 config_msg = "Unknown key";
1218 return ERR;
1219 }
1221 request = get_request(argv[2]);
1222 if (request == REQ_NONE) {
1223 const char *obsolete[] = { "cherry-pick" };
1224 size_t namelen = strlen(argv[2]);
1225 int i;
1227 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1228 if (namelen == strlen(obsolete[i]) &&
1229 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1230 config_msg = "Obsolete request name";
1231 return ERR;
1232 }
1233 }
1234 }
1235 if (request == REQ_NONE && *argv[2]++ == '!')
1236 request = add_run_request(keymap, key, argc - 2, argv + 2);
1237 if (request == REQ_NONE) {
1238 config_msg = "Unknown request name";
1239 return ERR;
1240 }
1242 add_keybinding(keymap, request, key);
1244 return OK;
1245 }
1247 static int
1248 set_option(char *opt, char *value)
1249 {
1250 const char *argv[SIZEOF_ARG];
1251 int valuelen;
1252 int argc = 0;
1254 /* Tokenize */
1255 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1256 argv[argc++] = value;
1257 value += valuelen;
1259 /* Nothing more to tokenize or last available token. */
1260 if (!*value || argc >= ARRAY_SIZE(argv))
1261 break;
1263 *value++ = 0;
1264 while (isspace(*value))
1265 value++;
1266 }
1268 if (!strcmp(opt, "color"))
1269 return option_color_command(argc, argv);
1271 if (!strcmp(opt, "set"))
1272 return option_set_command(argc, argv);
1274 if (!strcmp(opt, "bind"))
1275 return option_bind_command(argc, argv);
1277 config_msg = "Unknown option command";
1278 return ERR;
1279 }
1281 static int
1282 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1283 {
1284 int status = OK;
1286 config_lineno++;
1287 config_msg = "Internal error";
1289 /* Check for comment markers, since read_properties() will
1290 * only ensure opt and value are split at first " \t". */
1291 optlen = strcspn(opt, "#");
1292 if (optlen == 0)
1293 return OK;
1295 if (opt[optlen] != 0) {
1296 config_msg = "No option value";
1297 status = ERR;
1299 } else {
1300 /* Look for comment endings in the value. */
1301 size_t len = strcspn(value, "#");
1303 if (len < valuelen) {
1304 valuelen = len;
1305 value[valuelen] = 0;
1306 }
1308 status = set_option(opt, value);
1309 }
1311 if (status == ERR) {
1312 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1313 config_lineno, (int) optlen, opt, config_msg);
1314 config_errors = TRUE;
1315 }
1317 /* Always keep going if errors are encountered. */
1318 return OK;
1319 }
1321 static void
1322 load_option_file(const char *path)
1323 {
1324 FILE *file;
1326 /* It's ok that the file doesn't exist. */
1327 file = fopen(path, "r");
1328 if (!file)
1329 return;
1331 config_lineno = 0;
1332 config_errors = FALSE;
1334 if (read_properties(file, " \t", read_option) == ERR ||
1335 config_errors == TRUE)
1336 fprintf(stderr, "Errors while loading %s.\n", path);
1337 }
1339 static int
1340 load_options(void)
1341 {
1342 char *home = getenv("HOME");
1343 char *tigrc_user = getenv("TIGRC_USER");
1344 char *tigrc_system = getenv("TIGRC_SYSTEM");
1345 char buf[SIZEOF_STR];
1347 add_builtin_run_requests();
1349 if (!tigrc_system) {
1350 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1351 return ERR;
1352 tigrc_system = buf;
1353 }
1354 load_option_file(tigrc_system);
1356 if (!tigrc_user) {
1357 if (!home || !string_format(buf, "%s/.tigrc", home))
1358 return ERR;
1359 tigrc_user = buf;
1360 }
1361 load_option_file(tigrc_user);
1363 return OK;
1364 }
1367 /*
1368 * The viewer
1369 */
1371 struct view;
1372 struct view_ops;
1374 /* The display array of active views and the index of the current view. */
1375 static struct view *display[2];
1376 static unsigned int current_view;
1378 /* Reading from the prompt? */
1379 static bool input_mode = FALSE;
1381 #define foreach_displayed_view(view, i) \
1382 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1384 #define displayed_views() (display[1] != NULL ? 2 : 1)
1386 /* Current head and commit ID */
1387 static char ref_blob[SIZEOF_REF] = "";
1388 static char ref_commit[SIZEOF_REF] = "HEAD";
1389 static char ref_head[SIZEOF_REF] = "HEAD";
1391 struct view {
1392 const char *name; /* View name */
1393 const char *cmd_fmt; /* Default command line format */
1394 const char *cmd_env; /* Command line set via environment */
1395 const char *id; /* Points to either of ref_{head,commit,blob} */
1397 struct view_ops *ops; /* View operations */
1399 enum keymap keymap; /* What keymap does this view have */
1400 bool git_dir; /* Whether the view requires a git directory. */
1402 char cmd[SIZEOF_STR]; /* Command buffer */
1403 char ref[SIZEOF_REF]; /* Hovered commit reference */
1404 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1406 int height, width; /* The width and height of the main window */
1407 WINDOW *win; /* The main window */
1408 WINDOW *title; /* The title window living below the main window */
1410 /* Navigation */
1411 unsigned long offset; /* Offset of the window top */
1412 unsigned long lineno; /* Current line number */
1414 /* Searching */
1415 char grep[SIZEOF_STR]; /* Search string */
1416 regex_t *regex; /* Pre-compiled regex */
1418 /* If non-NULL, points to the view that opened this view. If this view
1419 * is closed tig will switch back to the parent view. */
1420 struct view *parent;
1422 /* Buffering */
1423 size_t lines; /* Total number of lines */
1424 struct line *line; /* Line index */
1425 size_t line_alloc; /* Total number of allocated lines */
1426 size_t line_size; /* Total number of used lines */
1427 unsigned int digits; /* Number of digits in the lines member. */
1429 /* Drawing */
1430 struct line *curline; /* Line currently being drawn. */
1431 enum line_type curtype; /* Attribute currently used for drawing. */
1432 unsigned long col; /* Column when drawing. */
1434 /* Loading */
1435 FILE *pipe;
1436 time_t start_time;
1437 };
1439 struct view_ops {
1440 /* What type of content being displayed. Used in the title bar. */
1441 const char *type;
1442 /* Open and reads in all view content. */
1443 bool (*open)(struct view *view);
1444 /* Read one line; updates view->line. */
1445 bool (*read)(struct view *view, char *data);
1446 /* Draw one line; @lineno must be < view->height. */
1447 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1448 /* Depending on view handle a special requests. */
1449 enum request (*request)(struct view *view, enum request request, struct line *line);
1450 /* Search for regex in a line. */
1451 bool (*grep)(struct view *view, struct line *line);
1452 /* Select line */
1453 void (*select)(struct view *view, struct line *line);
1454 };
1456 static struct view_ops blame_ops;
1457 static struct view_ops blob_ops;
1458 static struct view_ops help_ops;
1459 static struct view_ops log_ops;
1460 static struct view_ops main_ops;
1461 static struct view_ops pager_ops;
1462 static struct view_ops stage_ops;
1463 static struct view_ops status_ops;
1464 static struct view_ops tree_ops;
1466 #define VIEW_STR(name, cmd, env, ref, ops, map, git) \
1467 { name, cmd, #env, ref, ops, map, git }
1469 #define VIEW_(id, name, ops, git, ref) \
1470 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1473 static struct view views[] = {
1474 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1475 VIEW_(DIFF, "diff", &pager_ops, TRUE, ref_commit),
1476 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1477 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1478 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1479 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1480 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1481 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1482 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1483 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1484 };
1486 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1487 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1489 #define foreach_view(view, i) \
1490 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1492 #define view_is_displayed(view) \
1493 (view == display[0] || view == display[1])
1496 enum line_graphic {
1497 LINE_GRAPHIC_VLINE
1498 };
1500 static int line_graphics[] = {
1501 /* LINE_GRAPHIC_VLINE: */ '|'
1502 };
1504 static inline void
1505 set_view_attr(struct view *view, enum line_type type)
1506 {
1507 if (!view->curline->selected && view->curtype != type) {
1508 wattrset(view->win, get_line_attr(type));
1509 wchgat(view->win, -1, 0, type, NULL);
1510 view->curtype = type;
1511 }
1512 }
1514 static int
1515 draw_chars(struct view *view, enum line_type type, const char *string,
1516 int max_len, bool use_tilde)
1517 {
1518 int len = 0;
1519 int col = 0;
1520 int trimmed = FALSE;
1522 if (max_len <= 0)
1523 return 0;
1525 if (opt_utf8) {
1526 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1527 } else {
1528 col = len = strlen(string);
1529 if (len > max_len) {
1530 if (use_tilde) {
1531 max_len -= 1;
1532 }
1533 col = len = max_len;
1534 trimmed = TRUE;
1535 }
1536 }
1538 set_view_attr(view, type);
1539 waddnstr(view->win, string, len);
1540 if (trimmed && use_tilde) {
1541 set_view_attr(view, LINE_DELIMITER);
1542 waddch(view->win, '~');
1543 col++;
1544 }
1546 return col;
1547 }
1549 static int
1550 draw_space(struct view *view, enum line_type type, int max, int spaces)
1551 {
1552 static char space[] = " ";
1553 int col = 0;
1555 spaces = MIN(max, spaces);
1557 while (spaces > 0) {
1558 int len = MIN(spaces, sizeof(space) - 1);
1560 col += draw_chars(view, type, space, spaces, FALSE);
1561 spaces -= len;
1562 }
1564 return col;
1565 }
1567 static bool
1568 draw_lineno(struct view *view, unsigned int lineno)
1569 {
1570 char number[10];
1571 int digits3 = view->digits < 3 ? 3 : view->digits;
1572 int max_number = MIN(digits3, STRING_SIZE(number));
1573 int max = view->width - view->col;
1574 int col;
1576 if (max < max_number)
1577 max_number = max;
1579 lineno += view->offset + 1;
1580 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1581 static char fmt[] = "%1ld";
1583 if (view->digits <= 9)
1584 fmt[1] = '0' + digits3;
1586 if (!string_format(number, fmt, lineno))
1587 number[0] = 0;
1588 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1589 } else {
1590 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1591 }
1593 if (col < max) {
1594 set_view_attr(view, LINE_DEFAULT);
1595 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1596 col++;
1597 }
1599 if (col < max)
1600 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1601 view->col += col;
1603 return view->width - view->col <= 0;
1604 }
1606 static bool
1607 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1608 {
1609 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1610 return view->width - view->col <= 0;
1611 }
1613 static bool
1614 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1615 {
1616 int max = view->width - view->col;
1617 int i;
1619 if (max < size)
1620 size = max;
1622 set_view_attr(view, type);
1623 /* Using waddch() instead of waddnstr() ensures that
1624 * they'll be rendered correctly for the cursor line. */
1625 for (i = 0; i < size; i++)
1626 waddch(view->win, graphic[i]);
1628 view->col += size;
1629 if (size < max) {
1630 waddch(view->win, ' ');
1631 view->col++;
1632 }
1634 return view->width - view->col <= 0;
1635 }
1637 static bool
1638 draw_field(struct view *view, enum line_type type, char *text, int len, bool trim)
1639 {
1640 int max = MIN(view->width - view->col, len);
1641 int col;
1643 if (text)
1644 col = draw_chars(view, type, text, max - 1, trim);
1645 else
1646 col = draw_space(view, type, max - 1, max - 1);
1648 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1649 return view->width - view->col <= 0;
1650 }
1652 static bool
1653 draw_date(struct view *view, struct tm *time)
1654 {
1655 char buf[DATE_COLS];
1656 char *date;
1657 int timelen = 0;
1659 if (time)
1660 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1661 date = timelen ? buf : NULL;
1663 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1664 }
1666 static bool
1667 draw_view_line(struct view *view, unsigned int lineno)
1668 {
1669 struct line *line;
1670 bool selected = (view->offset + lineno == view->lineno);
1671 bool draw_ok;
1673 assert(view_is_displayed(view));
1675 if (view->offset + lineno >= view->lines)
1676 return FALSE;
1678 line = &view->line[view->offset + lineno];
1680 wmove(view->win, lineno, 0);
1681 view->col = 0;
1682 view->curline = line;
1683 view->curtype = LINE_NONE;
1684 line->selected = FALSE;
1686 if (selected) {
1687 set_view_attr(view, LINE_CURSOR);
1688 line->selected = TRUE;
1689 view->ops->select(view, line);
1690 } else if (line->selected) {
1691 wclrtoeol(view->win);
1692 }
1694 scrollok(view->win, FALSE);
1695 draw_ok = view->ops->draw(view, line, lineno);
1696 scrollok(view->win, TRUE);
1698 return draw_ok;
1699 }
1701 static void
1702 redraw_view_dirty(struct view *view)
1703 {
1704 bool dirty = FALSE;
1705 int lineno;
1707 for (lineno = 0; lineno < view->height; lineno++) {
1708 struct line *line = &view->line[view->offset + lineno];
1710 if (!line->dirty)
1711 continue;
1712 line->dirty = 0;
1713 dirty = TRUE;
1714 if (!draw_view_line(view, lineno))
1715 break;
1716 }
1718 if (!dirty)
1719 return;
1720 redrawwin(view->win);
1721 if (input_mode)
1722 wnoutrefresh(view->win);
1723 else
1724 wrefresh(view->win);
1725 }
1727 static void
1728 redraw_view_from(struct view *view, int lineno)
1729 {
1730 assert(0 <= lineno && lineno < view->height);
1732 for (; lineno < view->height; lineno++) {
1733 if (!draw_view_line(view, lineno))
1734 break;
1735 }
1737 redrawwin(view->win);
1738 if (input_mode)
1739 wnoutrefresh(view->win);
1740 else
1741 wrefresh(view->win);
1742 }
1744 static void
1745 redraw_view(struct view *view)
1746 {
1747 wclear(view->win);
1748 redraw_view_from(view, 0);
1749 }
1752 static void
1753 update_view_title(struct view *view)
1754 {
1755 char buf[SIZEOF_STR];
1756 char state[SIZEOF_STR];
1757 size_t bufpos = 0, statelen = 0;
1759 assert(view_is_displayed(view));
1761 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1762 unsigned int view_lines = view->offset + view->height;
1763 unsigned int lines = view->lines
1764 ? MIN(view_lines, view->lines) * 100 / view->lines
1765 : 0;
1767 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1768 view->ops->type,
1769 view->lineno + 1,
1770 view->lines,
1771 lines);
1773 if (view->pipe) {
1774 time_t secs = time(NULL) - view->start_time;
1776 /* Three git seconds are a long time ... */
1777 if (secs > 2)
1778 string_format_from(state, &statelen, " %lds", secs);
1779 }
1780 }
1782 string_format_from(buf, &bufpos, "[%s]", view->name);
1783 if (*view->ref && bufpos < view->width) {
1784 size_t refsize = strlen(view->ref);
1785 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1787 if (minsize < view->width)
1788 refsize = view->width - minsize + 7;
1789 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1790 }
1792 if (statelen && bufpos < view->width) {
1793 string_format_from(buf, &bufpos, " %s", state);
1794 }
1796 if (view == display[current_view])
1797 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1798 else
1799 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1801 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1802 wclrtoeol(view->title);
1803 wmove(view->title, 0, view->width - 1);
1805 if (input_mode)
1806 wnoutrefresh(view->title);
1807 else
1808 wrefresh(view->title);
1809 }
1811 static void
1812 resize_display(void)
1813 {
1814 int offset, i;
1815 struct view *base = display[0];
1816 struct view *view = display[1] ? display[1] : display[0];
1818 /* Setup window dimensions */
1820 getmaxyx(stdscr, base->height, base->width);
1822 /* Make room for the status window. */
1823 base->height -= 1;
1825 if (view != base) {
1826 /* Horizontal split. */
1827 view->width = base->width;
1828 view->height = SCALE_SPLIT_VIEW(base->height);
1829 base->height -= view->height;
1831 /* Make room for the title bar. */
1832 view->height -= 1;
1833 }
1835 /* Make room for the title bar. */
1836 base->height -= 1;
1838 offset = 0;
1840 foreach_displayed_view (view, i) {
1841 if (!view->win) {
1842 view->win = newwin(view->height, 0, offset, 0);
1843 if (!view->win)
1844 die("Failed to create %s view", view->name);
1846 scrollok(view->win, TRUE);
1848 view->title = newwin(1, 0, offset + view->height, 0);
1849 if (!view->title)
1850 die("Failed to create title window");
1852 } else {
1853 wresize(view->win, view->height, view->width);
1854 mvwin(view->win, offset, 0);
1855 mvwin(view->title, offset + view->height, 0);
1856 }
1858 offset += view->height + 1;
1859 }
1860 }
1862 static void
1863 redraw_display(void)
1864 {
1865 struct view *view;
1866 int i;
1868 foreach_displayed_view (view, i) {
1869 redraw_view(view);
1870 update_view_title(view);
1871 }
1872 }
1874 static void
1875 update_display_cursor(struct view *view)
1876 {
1877 /* Move the cursor to the right-most column of the cursor line.
1878 *
1879 * XXX: This could turn out to be a bit expensive, but it ensures that
1880 * the cursor does not jump around. */
1881 if (view->lines) {
1882 wmove(view->win, view->lineno - view->offset, view->width - 1);
1883 wrefresh(view->win);
1884 }
1885 }
1887 /*
1888 * Navigation
1889 */
1891 /* Scrolling backend */
1892 static void
1893 do_scroll_view(struct view *view, int lines)
1894 {
1895 bool redraw_current_line = FALSE;
1897 /* The rendering expects the new offset. */
1898 view->offset += lines;
1900 assert(0 <= view->offset && view->offset < view->lines);
1901 assert(lines);
1903 /* Move current line into the view. */
1904 if (view->lineno < view->offset) {
1905 view->lineno = view->offset;
1906 redraw_current_line = TRUE;
1907 } else if (view->lineno >= view->offset + view->height) {
1908 view->lineno = view->offset + view->height - 1;
1909 redraw_current_line = TRUE;
1910 }
1912 assert(view->offset <= view->lineno && view->lineno < view->lines);
1914 /* Redraw the whole screen if scrolling is pointless. */
1915 if (view->height < ABS(lines)) {
1916 redraw_view(view);
1918 } else {
1919 int line = lines > 0 ? view->height - lines : 0;
1920 int end = line + ABS(lines);
1922 wscrl(view->win, lines);
1924 for (; line < end; line++) {
1925 if (!draw_view_line(view, line))
1926 break;
1927 }
1929 if (redraw_current_line)
1930 draw_view_line(view, view->lineno - view->offset);
1931 }
1933 redrawwin(view->win);
1934 wrefresh(view->win);
1935 report("");
1936 }
1938 /* Scroll frontend */
1939 static void
1940 scroll_view(struct view *view, enum request request)
1941 {
1942 int lines = 1;
1944 assert(view_is_displayed(view));
1946 switch (request) {
1947 case REQ_SCROLL_PAGE_DOWN:
1948 lines = view->height;
1949 case REQ_SCROLL_LINE_DOWN:
1950 if (view->offset + lines > view->lines)
1951 lines = view->lines - view->offset;
1953 if (lines == 0 || view->offset + view->height >= view->lines) {
1954 report("Cannot scroll beyond the last line");
1955 return;
1956 }
1957 break;
1959 case REQ_SCROLL_PAGE_UP:
1960 lines = view->height;
1961 case REQ_SCROLL_LINE_UP:
1962 if (lines > view->offset)
1963 lines = view->offset;
1965 if (lines == 0) {
1966 report("Cannot scroll beyond the first line");
1967 return;
1968 }
1970 lines = -lines;
1971 break;
1973 default:
1974 die("request %d not handled in switch", request);
1975 }
1977 do_scroll_view(view, lines);
1978 }
1980 /* Cursor moving */
1981 static void
1982 move_view(struct view *view, enum request request)
1983 {
1984 int scroll_steps = 0;
1985 int steps;
1987 switch (request) {
1988 case REQ_MOVE_FIRST_LINE:
1989 steps = -view->lineno;
1990 break;
1992 case REQ_MOVE_LAST_LINE:
1993 steps = view->lines - view->lineno - 1;
1994 break;
1996 case REQ_MOVE_PAGE_UP:
1997 steps = view->height > view->lineno
1998 ? -view->lineno : -view->height;
1999 break;
2001 case REQ_MOVE_PAGE_DOWN:
2002 steps = view->lineno + view->height >= view->lines
2003 ? view->lines - view->lineno - 1 : view->height;
2004 break;
2006 case REQ_MOVE_UP:
2007 steps = -1;
2008 break;
2010 case REQ_MOVE_DOWN:
2011 steps = 1;
2012 break;
2014 default:
2015 die("request %d not handled in switch", request);
2016 }
2018 if (steps <= 0 && view->lineno == 0) {
2019 report("Cannot move beyond the first line");
2020 return;
2022 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2023 report("Cannot move beyond the last line");
2024 return;
2025 }
2027 /* Move the current line */
2028 view->lineno += steps;
2029 assert(0 <= view->lineno && view->lineno < view->lines);
2031 /* Check whether the view needs to be scrolled */
2032 if (view->lineno < view->offset ||
2033 view->lineno >= view->offset + view->height) {
2034 scroll_steps = steps;
2035 if (steps < 0 && -steps > view->offset) {
2036 scroll_steps = -view->offset;
2038 } else if (steps > 0) {
2039 if (view->lineno == view->lines - 1 &&
2040 view->lines > view->height) {
2041 scroll_steps = view->lines - view->offset - 1;
2042 if (scroll_steps >= view->height)
2043 scroll_steps -= view->height - 1;
2044 }
2045 }
2046 }
2048 if (!view_is_displayed(view)) {
2049 view->offset += scroll_steps;
2050 assert(0 <= view->offset && view->offset < view->lines);
2051 view->ops->select(view, &view->line[view->lineno]);
2052 return;
2053 }
2055 /* Repaint the old "current" line if we be scrolling */
2056 if (ABS(steps) < view->height)
2057 draw_view_line(view, view->lineno - steps - view->offset);
2059 if (scroll_steps) {
2060 do_scroll_view(view, scroll_steps);
2061 return;
2062 }
2064 /* Draw the current line */
2065 draw_view_line(view, view->lineno - view->offset);
2067 redrawwin(view->win);
2068 wrefresh(view->win);
2069 report("");
2070 }
2073 /*
2074 * Searching
2075 */
2077 static void search_view(struct view *view, enum request request);
2079 static bool
2080 find_next_line(struct view *view, unsigned long lineno, struct line *line)
2081 {
2082 assert(view_is_displayed(view));
2084 if (!view->ops->grep(view, line))
2085 return FALSE;
2087 if (lineno - view->offset >= view->height) {
2088 view->offset = lineno;
2089 view->lineno = lineno;
2090 redraw_view(view);
2092 } else {
2093 unsigned long old_lineno = view->lineno - view->offset;
2095 view->lineno = lineno;
2096 draw_view_line(view, old_lineno);
2098 draw_view_line(view, view->lineno - view->offset);
2099 redrawwin(view->win);
2100 wrefresh(view->win);
2101 }
2103 report("Line %ld matches '%s'", lineno + 1, view->grep);
2104 return TRUE;
2105 }
2107 static void
2108 find_next(struct view *view, enum request request)
2109 {
2110 unsigned long lineno = view->lineno;
2111 int direction;
2113 if (!*view->grep) {
2114 if (!*opt_search)
2115 report("No previous search");
2116 else
2117 search_view(view, request);
2118 return;
2119 }
2121 switch (request) {
2122 case REQ_SEARCH:
2123 case REQ_FIND_NEXT:
2124 direction = 1;
2125 break;
2127 case REQ_SEARCH_BACK:
2128 case REQ_FIND_PREV:
2129 direction = -1;
2130 break;
2132 default:
2133 return;
2134 }
2136 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2137 lineno += direction;
2139 /* Note, lineno is unsigned long so will wrap around in which case it
2140 * will become bigger than view->lines. */
2141 for (; lineno < view->lines; lineno += direction) {
2142 struct line *line = &view->line[lineno];
2144 if (find_next_line(view, lineno, line))
2145 return;
2146 }
2148 report("No match found for '%s'", view->grep);
2149 }
2151 static void
2152 search_view(struct view *view, enum request request)
2153 {
2154 int regex_err;
2156 if (view->regex) {
2157 regfree(view->regex);
2158 *view->grep = 0;
2159 } else {
2160 view->regex = calloc(1, sizeof(*view->regex));
2161 if (!view->regex)
2162 return;
2163 }
2165 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2166 if (regex_err != 0) {
2167 char buf[SIZEOF_STR] = "unknown error";
2169 regerror(regex_err, view->regex, buf, sizeof(buf));
2170 report("Search failed: %s", buf);
2171 return;
2172 }
2174 string_copy(view->grep, opt_search);
2176 find_next(view, request);
2177 }
2179 /*
2180 * Incremental updating
2181 */
2183 static void
2184 end_update(struct view *view, bool force)
2185 {
2186 if (!view->pipe)
2187 return;
2188 while (!view->ops->read(view, NULL))
2189 if (!force)
2190 return;
2191 set_nonblocking_input(FALSE);
2192 if (view->pipe == stdin)
2193 fclose(view->pipe);
2194 else
2195 pclose(view->pipe);
2196 view->pipe = NULL;
2197 }
2199 static bool
2200 begin_update(struct view *view, bool refresh)
2201 {
2202 if (opt_cmd[0]) {
2203 string_copy(view->cmd, opt_cmd);
2204 opt_cmd[0] = 0;
2205 /* When running random commands, initially show the
2206 * command in the title. However, it maybe later be
2207 * overwritten if a commit line is selected. */
2208 if (view == VIEW(REQ_VIEW_PAGER))
2209 string_copy(view->ref, view->cmd);
2210 else
2211 view->ref[0] = 0;
2213 } else if (view == VIEW(REQ_VIEW_TREE)) {
2214 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2215 char path[SIZEOF_STR];
2217 if (strcmp(view->vid, view->id))
2218 opt_path[0] = path[0] = 0;
2219 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
2220 return FALSE;
2222 if (!string_format(view->cmd, format, view->id, path))
2223 return FALSE;
2225 } else if (!refresh) {
2226 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2227 const char *id = view->id;
2229 if (!string_format(view->cmd, format, id, id, id, id, id))
2230 return FALSE;
2232 /* Put the current ref_* value to the view title ref
2233 * member. This is needed by the blob view. Most other
2234 * views sets it automatically after loading because the
2235 * first line is a commit line. */
2236 string_copy_rev(view->ref, view->id);
2237 }
2239 /* Special case for the pager view. */
2240 if (opt_pipe) {
2241 view->pipe = opt_pipe;
2242 opt_pipe = NULL;
2243 } else {
2244 view->pipe = popen(view->cmd, "r");
2245 }
2247 if (!view->pipe)
2248 return FALSE;
2250 set_nonblocking_input(TRUE);
2252 view->offset = 0;
2253 view->lines = 0;
2254 view->lineno = 0;
2255 string_copy_rev(view->vid, view->id);
2257 if (view->line) {
2258 int i;
2260 for (i = 0; i < view->lines; i++)
2261 if (view->line[i].data)
2262 free(view->line[i].data);
2264 free(view->line);
2265 view->line = NULL;
2266 }
2268 view->start_time = time(NULL);
2270 return TRUE;
2271 }
2273 #define ITEM_CHUNK_SIZE 256
2274 static void *
2275 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2276 {
2277 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2278 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2280 if (mem == NULL || num_chunks != num_chunks_new) {
2281 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2282 mem = realloc(mem, *size * item_size);
2283 }
2285 return mem;
2286 }
2288 static struct line *
2289 realloc_lines(struct view *view, size_t line_size)
2290 {
2291 size_t alloc = view->line_alloc;
2292 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2293 sizeof(*view->line));
2295 if (!tmp)
2296 return NULL;
2298 view->line = tmp;
2299 view->line_alloc = alloc;
2300 view->line_size = line_size;
2301 return view->line;
2302 }
2304 static bool
2305 update_view(struct view *view)
2306 {
2307 char in_buffer[BUFSIZ];
2308 char out_buffer[BUFSIZ * 2];
2309 char *line;
2310 /* The number of lines to read. If too low it will cause too much
2311 * redrawing (and possible flickering), if too high responsiveness
2312 * will suffer. */
2313 unsigned long lines = view->height;
2314 int redraw_from = -1;
2316 if (!view->pipe)
2317 return TRUE;
2319 /* Only redraw if lines are visible. */
2320 if (view->offset + view->height >= view->lines)
2321 redraw_from = view->lines - view->offset;
2323 /* FIXME: This is probably not perfect for backgrounded views. */
2324 if (!realloc_lines(view, view->lines + lines))
2325 goto alloc_error;
2327 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
2328 size_t linelen = strlen(line);
2330 if (linelen)
2331 line[linelen - 1] = 0;
2333 if (opt_iconv != ICONV_NONE) {
2334 ICONV_CONST char *inbuf = line;
2335 size_t inlen = linelen;
2337 char *outbuf = out_buffer;
2338 size_t outlen = sizeof(out_buffer);
2340 size_t ret;
2342 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2343 if (ret != (size_t) -1) {
2344 line = out_buffer;
2345 linelen = strlen(out_buffer);
2346 }
2347 }
2349 if (!view->ops->read(view, line))
2350 goto alloc_error;
2352 if (lines-- == 1)
2353 break;
2354 }
2356 {
2357 int digits;
2359 lines = view->lines;
2360 for (digits = 0; lines; digits++)
2361 lines /= 10;
2363 /* Keep the displayed view in sync with line number scaling. */
2364 if (digits != view->digits) {
2365 view->digits = digits;
2366 redraw_from = 0;
2367 }
2368 }
2370 if (!view_is_displayed(view))
2371 goto check_pipe;
2373 if (view == VIEW(REQ_VIEW_TREE)) {
2374 /* Clear the view and redraw everything since the tree sorting
2375 * might have rearranged things. */
2376 redraw_view(view);
2378 } else if (redraw_from >= 0) {
2379 /* If this is an incremental update, redraw the previous line
2380 * since for commits some members could have changed when
2381 * loading the main view. */
2382 if (redraw_from > 0)
2383 redraw_from--;
2385 /* Since revision graph visualization requires knowledge
2386 * about the parent commit, it causes a further one-off
2387 * needed to be redrawn for incremental updates. */
2388 if (redraw_from > 0 && opt_rev_graph)
2389 redraw_from--;
2391 /* Incrementally draw avoids flickering. */
2392 redraw_view_from(view, redraw_from);
2393 }
2395 if (view == VIEW(REQ_VIEW_BLAME))
2396 redraw_view_dirty(view);
2398 /* Update the title _after_ the redraw so that if the redraw picks up a
2399 * commit reference in view->ref it'll be available here. */
2400 update_view_title(view);
2402 check_pipe:
2403 if (ferror(view->pipe) && errno != 0) {
2404 report("Failed to read: %s", strerror(errno));
2405 end_update(view, TRUE);
2407 } else if (feof(view->pipe)) {
2408 report("");
2409 end_update(view, FALSE);
2410 }
2412 return TRUE;
2414 alloc_error:
2415 report("Allocation failure");
2416 end_update(view, TRUE);
2417 return FALSE;
2418 }
2420 static struct line *
2421 add_line_data(struct view *view, void *data, enum line_type type)
2422 {
2423 struct line *line = &view->line[view->lines++];
2425 memset(line, 0, sizeof(*line));
2426 line->type = type;
2427 line->data = data;
2429 return line;
2430 }
2432 static struct line *
2433 add_line_text(struct view *view, char *data, enum line_type type)
2434 {
2435 if (data)
2436 data = strdup(data);
2438 return data ? add_line_data(view, data, type) : NULL;
2439 }
2442 /*
2443 * View opening
2444 */
2446 enum open_flags {
2447 OPEN_DEFAULT = 0, /* Use default view switching. */
2448 OPEN_SPLIT = 1, /* Split current view. */
2449 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2450 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2451 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2452 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2453 };
2455 static void
2456 open_view(struct view *prev, enum request request, enum open_flags flags)
2457 {
2458 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2459 bool split = !!(flags & OPEN_SPLIT);
2460 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH));
2461 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2462 struct view *view = VIEW(request);
2463 int nviews = displayed_views();
2464 struct view *base_view = display[0];
2466 if (view == prev && nviews == 1 && !reload) {
2467 report("Already in %s view", view->name);
2468 return;
2469 }
2471 if (view->git_dir && !opt_git_dir[0]) {
2472 report("The %s view is disabled in pager view", view->name);
2473 return;
2474 }
2476 if (split) {
2477 display[1] = view;
2478 if (!backgrounded)
2479 current_view = 1;
2480 } else if (!nomaximize) {
2481 /* Maximize the current view. */
2482 memset(display, 0, sizeof(display));
2483 current_view = 0;
2484 display[current_view] = view;
2485 }
2487 /* Resize the view when switching between split- and full-screen,
2488 * or when switching between two different full-screen views. */
2489 if (nviews != displayed_views() ||
2490 (nviews == 1 && base_view != display[0]))
2491 resize_display();
2493 if (view->pipe)
2494 end_update(view, TRUE);
2496 if (view->ops->open) {
2497 if (!view->ops->open(view)) {
2498 report("Failed to load %s view", view->name);
2499 return;
2500 }
2502 } else if ((reload || strcmp(view->vid, view->id)) &&
2503 !begin_update(view, flags & OPEN_REFRESH)) {
2504 report("Failed to load %s view", view->name);
2505 return;
2506 }
2508 if (split && prev->lineno - prev->offset >= prev->height) {
2509 /* Take the title line into account. */
2510 int lines = prev->lineno - prev->offset - prev->height + 1;
2512 /* Scroll the view that was split if the current line is
2513 * outside the new limited view. */
2514 do_scroll_view(prev, lines);
2515 }
2517 if (prev && view != prev) {
2518 if (split && !backgrounded) {
2519 /* "Blur" the previous view. */
2520 update_view_title(prev);
2521 }
2523 view->parent = prev;
2524 }
2526 if (view->pipe && view->lines == 0) {
2527 /* Clear the old view and let the incremental updating refill
2528 * the screen. */
2529 werase(view->win);
2530 report("");
2531 } else {
2532 redraw_view(view);
2533 report("");
2534 }
2536 /* If the view is backgrounded the above calls to report()
2537 * won't redraw the view title. */
2538 if (backgrounded)
2539 update_view_title(view);
2540 }
2542 static bool
2543 run_confirm(const char *cmd, const char *prompt)
2544 {
2545 bool confirmation = prompt_yesno(prompt);
2547 if (confirmation)
2548 system(cmd);
2550 return confirmation;
2551 }
2553 static void
2554 open_external_viewer(const char *cmd)
2555 {
2556 def_prog_mode(); /* save current tty modes */
2557 endwin(); /* restore original tty modes */
2558 system(cmd);
2559 fprintf(stderr, "Press Enter to continue");
2560 getc(stdin);
2561 reset_prog_mode();
2562 redraw_display();
2563 }
2565 static void
2566 open_mergetool(const char *file)
2567 {
2568 char cmd[SIZEOF_STR];
2569 char file_sq[SIZEOF_STR];
2571 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2572 string_format(cmd, "git mergetool %s", file_sq)) {
2573 open_external_viewer(cmd);
2574 }
2575 }
2577 static void
2578 open_editor(bool from_root, const char *file)
2579 {
2580 char cmd[SIZEOF_STR];
2581 char file_sq[SIZEOF_STR];
2582 char *editor;
2583 char *prefix = from_root ? opt_cdup : "";
2585 editor = getenv("GIT_EDITOR");
2586 if (!editor && *opt_editor)
2587 editor = opt_editor;
2588 if (!editor)
2589 editor = getenv("VISUAL");
2590 if (!editor)
2591 editor = getenv("EDITOR");
2592 if (!editor)
2593 editor = "vi";
2595 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2596 string_format(cmd, "%s %s%s", editor, prefix, file_sq)) {
2597 open_external_viewer(cmd);
2598 }
2599 }
2601 static void
2602 open_run_request(enum request request)
2603 {
2604 struct run_request *req = get_run_request(request);
2605 char buf[SIZEOF_STR * 2];
2606 size_t bufpos;
2607 char *cmd;
2609 if (!req) {
2610 report("Unknown run request");
2611 return;
2612 }
2614 bufpos = 0;
2615 cmd = req->cmd;
2617 while (cmd) {
2618 char *next = strstr(cmd, "%(");
2619 int len = next - cmd;
2620 char *value;
2622 if (!next) {
2623 len = strlen(cmd);
2624 value = "";
2626 } else if (!strncmp(next, "%(head)", 7)) {
2627 value = ref_head;
2629 } else if (!strncmp(next, "%(commit)", 9)) {
2630 value = ref_commit;
2632 } else if (!strncmp(next, "%(blob)", 7)) {
2633 value = ref_blob;
2635 } else {
2636 report("Unknown replacement in run request: `%s`", req->cmd);
2637 return;
2638 }
2640 if (!string_format_from(buf, &bufpos, "%.*s%s", len, cmd, value))
2641 return;
2643 if (next)
2644 next = strchr(next, ')') + 1;
2645 cmd = next;
2646 }
2648 open_external_viewer(buf);
2649 }
2651 /*
2652 * User request switch noodle
2653 */
2655 static int
2656 view_driver(struct view *view, enum request request)
2657 {
2658 int i;
2660 if (request == REQ_NONE) {
2661 doupdate();
2662 return TRUE;
2663 }
2665 if (request > REQ_NONE) {
2666 open_run_request(request);
2667 /* FIXME: When all views can refresh always do this. */
2668 if (view == VIEW(REQ_VIEW_STATUS) ||
2669 view == VIEW(REQ_VIEW_MAIN) ||
2670 view == VIEW(REQ_VIEW_LOG) ||
2671 view == VIEW(REQ_VIEW_STAGE))
2672 request = REQ_REFRESH;
2673 else
2674 return TRUE;
2675 }
2677 if (view && view->lines) {
2678 request = view->ops->request(view, request, &view->line[view->lineno]);
2679 if (request == REQ_NONE)
2680 return TRUE;
2681 }
2683 switch (request) {
2684 case REQ_MOVE_UP:
2685 case REQ_MOVE_DOWN:
2686 case REQ_MOVE_PAGE_UP:
2687 case REQ_MOVE_PAGE_DOWN:
2688 case REQ_MOVE_FIRST_LINE:
2689 case REQ_MOVE_LAST_LINE:
2690 move_view(view, request);
2691 break;
2693 case REQ_SCROLL_LINE_DOWN:
2694 case REQ_SCROLL_LINE_UP:
2695 case REQ_SCROLL_PAGE_DOWN:
2696 case REQ_SCROLL_PAGE_UP:
2697 scroll_view(view, request);
2698 break;
2700 case REQ_VIEW_BLAME:
2701 if (!opt_file[0]) {
2702 report("No file chosen, press %s to open tree view",
2703 get_key(REQ_VIEW_TREE));
2704 break;
2705 }
2706 open_view(view, request, OPEN_DEFAULT);
2707 break;
2709 case REQ_VIEW_BLOB:
2710 if (!ref_blob[0]) {
2711 report("No file chosen, press %s to open tree view",
2712 get_key(REQ_VIEW_TREE));
2713 break;
2714 }
2715 open_view(view, request, OPEN_DEFAULT);
2716 break;
2718 case REQ_VIEW_PAGER:
2719 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2720 report("No pager content, press %s to run command from prompt",
2721 get_key(REQ_PROMPT));
2722 break;
2723 }
2724 open_view(view, request, OPEN_DEFAULT);
2725 break;
2727 case REQ_VIEW_STAGE:
2728 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2729 report("No stage content, press %s to open the status view and choose file",
2730 get_key(REQ_VIEW_STATUS));
2731 break;
2732 }
2733 open_view(view, request, OPEN_DEFAULT);
2734 break;
2736 case REQ_VIEW_STATUS:
2737 if (opt_is_inside_work_tree == FALSE) {
2738 report("The status view requires a working tree");
2739 break;
2740 }
2741 open_view(view, request, OPEN_DEFAULT);
2742 break;
2744 case REQ_VIEW_MAIN:
2745 case REQ_VIEW_DIFF:
2746 case REQ_VIEW_LOG:
2747 case REQ_VIEW_TREE:
2748 case REQ_VIEW_HELP:
2749 open_view(view, request, OPEN_DEFAULT);
2750 break;
2752 case REQ_NEXT:
2753 case REQ_PREVIOUS:
2754 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2756 if ((view == VIEW(REQ_VIEW_DIFF) &&
2757 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2758 (view == VIEW(REQ_VIEW_DIFF) &&
2759 view->parent == VIEW(REQ_VIEW_BLAME)) ||
2760 (view == VIEW(REQ_VIEW_STAGE) &&
2761 view->parent == VIEW(REQ_VIEW_STATUS)) ||
2762 (view == VIEW(REQ_VIEW_BLOB) &&
2763 view->parent == VIEW(REQ_VIEW_TREE))) {
2764 int line;
2766 view = view->parent;
2767 line = view->lineno;
2768 move_view(view, request);
2769 if (view_is_displayed(view))
2770 update_view_title(view);
2771 if (line != view->lineno)
2772 view->ops->request(view, REQ_ENTER,
2773 &view->line[view->lineno]);
2775 } else {
2776 move_view(view, request);
2777 }
2778 break;
2780 case REQ_VIEW_NEXT:
2781 {
2782 int nviews = displayed_views();
2783 int next_view = (current_view + 1) % nviews;
2785 if (next_view == current_view) {
2786 report("Only one view is displayed");
2787 break;
2788 }
2790 current_view = next_view;
2791 /* Blur out the title of the previous view. */
2792 update_view_title(view);
2793 report("");
2794 break;
2795 }
2796 case REQ_REFRESH:
2797 report("Refreshing is not yet supported for the %s view", view->name);
2798 break;
2800 case REQ_MAXIMIZE:
2801 if (displayed_views() == 2)
2802 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
2803 break;
2805 case REQ_TOGGLE_LINENO:
2806 opt_line_number = !opt_line_number;
2807 redraw_display();
2808 break;
2810 case REQ_TOGGLE_DATE:
2811 opt_date = !opt_date;
2812 redraw_display();
2813 break;
2815 case REQ_TOGGLE_AUTHOR:
2816 opt_author = !opt_author;
2817 redraw_display();
2818 break;
2820 case REQ_TOGGLE_REV_GRAPH:
2821 opt_rev_graph = !opt_rev_graph;
2822 redraw_display();
2823 break;
2825 case REQ_TOGGLE_REFS:
2826 opt_show_refs = !opt_show_refs;
2827 redraw_display();
2828 break;
2830 case REQ_SEARCH:
2831 case REQ_SEARCH_BACK:
2832 search_view(view, request);
2833 break;
2835 case REQ_FIND_NEXT:
2836 case REQ_FIND_PREV:
2837 find_next(view, request);
2838 break;
2840 case REQ_STOP_LOADING:
2841 for (i = 0; i < ARRAY_SIZE(views); i++) {
2842 view = &views[i];
2843 if (view->pipe)
2844 report("Stopped loading the %s view", view->name),
2845 end_update(view, TRUE);
2846 }
2847 break;
2849 case REQ_SHOW_VERSION:
2850 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
2851 return TRUE;
2853 case REQ_SCREEN_RESIZE:
2854 resize_display();
2855 /* Fall-through */
2856 case REQ_SCREEN_REDRAW:
2857 redraw_display();
2858 break;
2860 case REQ_EDIT:
2861 report("Nothing to edit");
2862 break;
2864 case REQ_ENTER:
2865 report("Nothing to enter");
2866 break;
2868 case REQ_VIEW_CLOSE:
2869 /* XXX: Mark closed views by letting view->parent point to the
2870 * view itself. Parents to closed view should never be
2871 * followed. */
2872 if (view->parent &&
2873 view->parent->parent != view->parent) {
2874 memset(display, 0, sizeof(display));
2875 current_view = 0;
2876 display[current_view] = view->parent;
2877 view->parent = view;
2878 resize_display();
2879 redraw_display();
2880 report("");
2881 break;
2882 }
2883 /* Fall-through */
2884 case REQ_QUIT:
2885 return FALSE;
2887 default:
2888 /* An unknown key will show most commonly used commands. */
2889 report("Unknown key, press 'h' for help");
2890 return TRUE;
2891 }
2893 return TRUE;
2894 }
2897 /*
2898 * Pager backend
2899 */
2901 static bool
2902 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2903 {
2904 char *text = line->data;
2906 if (opt_line_number && draw_lineno(view, lineno))
2907 return TRUE;
2909 draw_text(view, line->type, text, TRUE);
2910 return TRUE;
2911 }
2913 static bool
2914 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2915 {
2916 char refbuf[SIZEOF_STR];
2917 char *ref = NULL;
2918 FILE *pipe;
2920 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2921 return TRUE;
2923 pipe = popen(refbuf, "r");
2924 if (!pipe)
2925 return TRUE;
2927 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2928 ref = chomp_string(ref);
2929 pclose(pipe);
2931 if (!ref || !*ref)
2932 return TRUE;
2934 /* This is the only fatal call, since it can "corrupt" the buffer. */
2935 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2936 return FALSE;
2938 return TRUE;
2939 }
2941 static void
2942 add_pager_refs(struct view *view, struct line *line)
2943 {
2944 char buf[SIZEOF_STR];
2945 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
2946 struct ref **refs;
2947 size_t bufpos = 0, refpos = 0;
2948 const char *sep = "Refs: ";
2949 bool is_tag = FALSE;
2951 assert(line->type == LINE_COMMIT);
2953 refs = get_refs(commit_id);
2954 if (!refs) {
2955 if (view == VIEW(REQ_VIEW_DIFF))
2956 goto try_add_describe_ref;
2957 return;
2958 }
2960 do {
2961 struct ref *ref = refs[refpos];
2962 char *fmt = ref->tag ? "%s[%s]" :
2963 ref->remote ? "%s<%s>" : "%s%s";
2965 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2966 return;
2967 sep = ", ";
2968 if (ref->tag)
2969 is_tag = TRUE;
2970 } while (refs[refpos++]->next);
2972 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2973 try_add_describe_ref:
2974 /* Add <tag>-g<commit_id> "fake" reference. */
2975 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2976 return;
2977 }
2979 if (bufpos == 0)
2980 return;
2982 if (!realloc_lines(view, view->line_size + 1))
2983 return;
2985 add_line_text(view, buf, LINE_PP_REFS);
2986 }
2988 static bool
2989 pager_read(struct view *view, char *data)
2990 {
2991 struct line *line;
2993 if (!data)
2994 return TRUE;
2996 line = add_line_text(view, data, get_line_type(data));
2997 if (!line)
2998 return FALSE;
3000 if (line->type == LINE_COMMIT &&
3001 (view == VIEW(REQ_VIEW_DIFF) ||
3002 view == VIEW(REQ_VIEW_LOG)))
3003 add_pager_refs(view, line);
3005 return TRUE;
3006 }
3008 static enum request
3009 pager_request(struct view *view, enum request request, struct line *line)
3010 {
3011 int split = 0;
3013 if (request != REQ_ENTER)
3014 return request;
3016 if (line->type == LINE_COMMIT &&
3017 (view == VIEW(REQ_VIEW_LOG) ||
3018 view == VIEW(REQ_VIEW_PAGER))) {
3019 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3020 split = 1;
3021 }
3023 /* Always scroll the view even if it was split. That way
3024 * you can use Enter to scroll through the log view and
3025 * split open each commit diff. */
3026 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3028 /* FIXME: A minor workaround. Scrolling the view will call report("")
3029 * but if we are scrolling a non-current view this won't properly
3030 * update the view title. */
3031 if (split)
3032 update_view_title(view);
3034 return REQ_NONE;
3035 }
3037 static bool
3038 pager_grep(struct view *view, struct line *line)
3039 {
3040 regmatch_t pmatch;
3041 char *text = line->data;
3043 if (!*text)
3044 return FALSE;
3046 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3047 return FALSE;
3049 return TRUE;
3050 }
3052 static void
3053 pager_select(struct view *view, struct line *line)
3054 {
3055 if (line->type == LINE_COMMIT) {
3056 char *text = (char *)line->data + STRING_SIZE("commit ");
3058 if (view != VIEW(REQ_VIEW_PAGER))
3059 string_copy_rev(view->ref, text);
3060 string_copy_rev(ref_commit, text);
3061 }
3062 }
3064 static struct view_ops pager_ops = {
3065 "line",
3066 NULL,
3067 pager_read,
3068 pager_draw,
3069 pager_request,
3070 pager_grep,
3071 pager_select,
3072 };
3074 static enum request
3075 log_request(struct view *view, enum request request, struct line *line)
3076 {
3077 switch (request) {
3078 case REQ_REFRESH:
3079 load_refs();
3080 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3081 return REQ_NONE;
3082 default:
3083 return pager_request(view, request, line);
3084 }
3085 }
3087 static struct view_ops log_ops = {
3088 "line",
3089 NULL,
3090 pager_read,
3091 pager_draw,
3092 log_request,
3093 pager_grep,
3094 pager_select,
3095 };
3098 /*
3099 * Help backend
3100 */
3102 static bool
3103 help_open(struct view *view)
3104 {
3105 char buf[BUFSIZ];
3106 int lines = ARRAY_SIZE(req_info) + 2;
3107 int i;
3109 if (view->lines > 0)
3110 return TRUE;
3112 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3113 if (!req_info[i].request)
3114 lines++;
3116 lines += run_requests + 1;
3118 view->line = calloc(lines, sizeof(*view->line));
3119 if (!view->line)
3120 return FALSE;
3122 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3124 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3125 char *key;
3127 if (req_info[i].request == REQ_NONE)
3128 continue;
3130 if (!req_info[i].request) {
3131 add_line_text(view, "", LINE_DEFAULT);
3132 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3133 continue;
3134 }
3136 key = get_key(req_info[i].request);
3137 if (!*key)
3138 key = "(no key defined)";
3140 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
3141 continue;
3143 add_line_text(view, buf, LINE_DEFAULT);
3144 }
3146 if (run_requests) {
3147 add_line_text(view, "", LINE_DEFAULT);
3148 add_line_text(view, "External commands:", LINE_DEFAULT);
3149 }
3151 for (i = 0; i < run_requests; i++) {
3152 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3153 char *key;
3155 if (!req)
3156 continue;
3158 key = get_key_name(req->key);
3159 if (!*key)
3160 key = "(no key defined)";
3162 if (!string_format(buf, " %-10s %-14s `%s`",
3163 keymap_table[req->keymap].name,
3164 key, req->cmd))
3165 continue;
3167 add_line_text(view, buf, LINE_DEFAULT);
3168 }
3170 return TRUE;
3171 }
3173 static struct view_ops help_ops = {
3174 "line",
3175 help_open,
3176 NULL,
3177 pager_draw,
3178 pager_request,
3179 pager_grep,
3180 pager_select,
3181 };
3184 /*
3185 * Tree backend
3186 */
3188 struct tree_stack_entry {
3189 struct tree_stack_entry *prev; /* Entry below this in the stack */
3190 unsigned long lineno; /* Line number to restore */
3191 char *name; /* Position of name in opt_path */
3192 };
3194 /* The top of the path stack. */
3195 static struct tree_stack_entry *tree_stack = NULL;
3196 unsigned long tree_lineno = 0;
3198 static void
3199 pop_tree_stack_entry(void)
3200 {
3201 struct tree_stack_entry *entry = tree_stack;
3203 tree_lineno = entry->lineno;
3204 entry->name[0] = 0;
3205 tree_stack = entry->prev;
3206 free(entry);
3207 }
3209 static void
3210 push_tree_stack_entry(char *name, unsigned long lineno)
3211 {
3212 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3213 size_t pathlen = strlen(opt_path);
3215 if (!entry)
3216 return;
3218 entry->prev = tree_stack;
3219 entry->name = opt_path + pathlen;
3220 tree_stack = entry;
3222 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3223 pop_tree_stack_entry();
3224 return;
3225 }
3227 /* Move the current line to the first tree entry. */
3228 tree_lineno = 1;
3229 entry->lineno = lineno;
3230 }
3232 /* Parse output from git-ls-tree(1):
3233 *
3234 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3235 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3236 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3237 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3238 */
3240 #define SIZEOF_TREE_ATTR \
3241 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3243 #define TREE_UP_FORMAT "040000 tree %s\t.."
3245 static int
3246 tree_compare_entry(enum line_type type1, char *name1,
3247 enum line_type type2, char *name2)
3248 {
3249 if (type1 != type2) {
3250 if (type1 == LINE_TREE_DIR)
3251 return -1;
3252 return 1;
3253 }
3255 return strcmp(name1, name2);
3256 }
3258 static char *
3259 tree_path(struct line *line)
3260 {
3261 char *path = line->data;
3263 return path + SIZEOF_TREE_ATTR;
3264 }
3266 static bool
3267 tree_read(struct view *view, char *text)
3268 {
3269 size_t textlen = text ? strlen(text) : 0;
3270 char buf[SIZEOF_STR];
3271 unsigned long pos;
3272 enum line_type type;
3273 bool first_read = view->lines == 0;
3275 if (!text)
3276 return TRUE;
3277 if (textlen <= SIZEOF_TREE_ATTR)
3278 return FALSE;
3280 type = text[STRING_SIZE("100644 ")] == 't'
3281 ? LINE_TREE_DIR : LINE_TREE_FILE;
3283 if (first_read) {
3284 /* Add path info line */
3285 if (!string_format(buf, "Directory path /%s", opt_path) ||
3286 !realloc_lines(view, view->line_size + 1) ||
3287 !add_line_text(view, buf, LINE_DEFAULT))
3288 return FALSE;
3290 /* Insert "link" to parent directory. */
3291 if (*opt_path) {
3292 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
3293 !realloc_lines(view, view->line_size + 1) ||
3294 !add_line_text(view, buf, LINE_TREE_DIR))
3295 return FALSE;
3296 }
3297 }
3299 /* Strip the path part ... */
3300 if (*opt_path) {
3301 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3302 size_t striplen = strlen(opt_path);
3303 char *path = text + SIZEOF_TREE_ATTR;
3305 if (pathlen > striplen)
3306 memmove(path, path + striplen,
3307 pathlen - striplen + 1);
3308 }
3310 /* Skip "Directory ..." and ".." line. */
3311 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
3312 struct line *line = &view->line[pos];
3313 char *path1 = tree_path(line);
3314 char *path2 = text + SIZEOF_TREE_ATTR;
3315 int cmp = tree_compare_entry(line->type, path1, type, path2);
3317 if (cmp <= 0)
3318 continue;
3320 text = strdup(text);
3321 if (!text)
3322 return FALSE;
3324 if (view->lines > pos)
3325 memmove(&view->line[pos + 1], &view->line[pos],
3326 (view->lines - pos) * sizeof(*line));
3328 line = &view->line[pos];
3329 line->data = text;
3330 line->type = type;
3331 view->lines++;
3332 return TRUE;
3333 }
3335 if (!add_line_text(view, text, type))
3336 return FALSE;
3338 if (tree_lineno > view->lineno) {
3339 view->lineno = tree_lineno;
3340 tree_lineno = 0;
3341 }
3343 return TRUE;
3344 }
3346 static enum request
3347 tree_request(struct view *view, enum request request, struct line *line)
3348 {
3349 enum open_flags flags;
3351 if (request == REQ_VIEW_BLAME) {
3352 char *filename = tree_path(line);
3354 if (line->type == LINE_TREE_DIR) {
3355 report("Cannot show blame for directory %s", opt_path);
3356 return REQ_NONE;
3357 }
3359 string_copy(opt_ref, view->vid);
3360 string_format(opt_file, "%s%s", opt_path, filename);
3361 return request;
3362 }
3363 if (request == REQ_TREE_PARENT) {
3364 if (*opt_path) {
3365 /* fake 'cd ..' */
3366 request = REQ_ENTER;
3367 line = &view->line[1];
3368 } else {
3369 /* quit view if at top of tree */
3370 return REQ_VIEW_CLOSE;
3371 }
3372 }
3373 if (request != REQ_ENTER)
3374 return request;
3376 /* Cleanup the stack if the tree view is at a different tree. */
3377 while (!*opt_path && tree_stack)
3378 pop_tree_stack_entry();
3380 switch (line->type) {
3381 case LINE_TREE_DIR:
3382 /* Depending on whether it is a subdir or parent (updir?) link
3383 * mangle the path buffer. */
3384 if (line == &view->line[1] && *opt_path) {
3385 pop_tree_stack_entry();
3387 } else {
3388 char *basename = tree_path(line);
3390 push_tree_stack_entry(basename, view->lineno);
3391 }
3393 /* Trees and subtrees share the same ID, so they are not not
3394 * unique like blobs. */
3395 flags = OPEN_RELOAD;
3396 request = REQ_VIEW_TREE;
3397 break;
3399 case LINE_TREE_FILE:
3400 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3401 request = REQ_VIEW_BLOB;
3402 break;
3404 default:
3405 return TRUE;
3406 }
3408 open_view(view, request, flags);
3409 if (request == REQ_VIEW_TREE) {
3410 view->lineno = tree_lineno;
3411 }
3413 return REQ_NONE;
3414 }
3416 static void
3417 tree_select(struct view *view, struct line *line)
3418 {
3419 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3421 if (line->type == LINE_TREE_FILE) {
3422 string_copy_rev(ref_blob, text);
3424 } else if (line->type != LINE_TREE_DIR) {
3425 return;
3426 }
3428 string_copy_rev(view->ref, text);
3429 }
3431 static struct view_ops tree_ops = {
3432 "file",
3433 NULL,
3434 tree_read,
3435 pager_draw,
3436 tree_request,
3437 pager_grep,
3438 tree_select,
3439 };
3441 static bool
3442 blob_read(struct view *view, char *line)
3443 {
3444 if (!line)
3445 return TRUE;
3446 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3447 }
3449 static struct view_ops blob_ops = {
3450 "line",
3451 NULL,
3452 blob_read,
3453 pager_draw,
3454 pager_request,
3455 pager_grep,
3456 pager_select,
3457 };
3459 /*
3460 * Blame backend
3461 *
3462 * Loading the blame view is a two phase job:
3463 *
3464 * 1. File content is read either using opt_file from the
3465 * filesystem or using git-cat-file.
3466 * 2. Then blame information is incrementally added by
3467 * reading output from git-blame.
3468 */
3470 struct blame_commit {
3471 char id[SIZEOF_REV]; /* SHA1 ID. */
3472 char title[128]; /* First line of the commit message. */
3473 char author[75]; /* Author of the commit. */
3474 struct tm time; /* Date from the author ident. */
3475 char filename[128]; /* Name of file. */
3476 };
3478 struct blame {
3479 struct blame_commit *commit;
3480 unsigned int header:1;
3481 char text[1];
3482 };
3484 #define BLAME_CAT_FILE_CMD "git cat-file blob %s:%s"
3485 #define BLAME_INCREMENTAL_CMD "git blame --incremental %s %s"
3487 static bool
3488 blame_open(struct view *view)
3489 {
3490 char path[SIZEOF_STR];
3491 char ref[SIZEOF_STR] = "";
3493 if (sq_quote(path, 0, opt_file) >= sizeof(path))
3494 return FALSE;
3496 if (*opt_ref && sq_quote(ref, 0, opt_ref) >= sizeof(ref))
3497 return FALSE;
3499 if (*opt_ref) {
3500 if (!string_format(view->cmd, BLAME_CAT_FILE_CMD, ref, path))
3501 return FALSE;
3502 } else {
3503 view->pipe = fopen(opt_file, "r");
3504 if (!view->pipe &&
3505 !string_format(view->cmd, BLAME_CAT_FILE_CMD, "HEAD", path))
3506 return FALSE;
3507 }
3509 if (!view->pipe)
3510 view->pipe = popen(view->cmd, "r");
3511 if (!view->pipe)
3512 return FALSE;
3514 if (!string_format(view->cmd, BLAME_INCREMENTAL_CMD, ref, path))
3515 return FALSE;
3517 string_format(view->ref, "%s ...", opt_file);
3518 string_copy_rev(view->vid, opt_file);
3519 set_nonblocking_input(TRUE);
3521 if (view->line) {
3522 int i;
3524 for (i = 0; i < view->lines; i++)
3525 free(view->line[i].data);
3526 free(view->line);
3527 }
3529 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
3530 view->offset = view->lines = view->lineno = 0;
3531 view->line = NULL;
3532 view->start_time = time(NULL);
3534 return TRUE;
3535 }
3537 static struct blame_commit *
3538 get_blame_commit(struct view *view, const char *id)
3539 {
3540 size_t i;
3542 for (i = 0; i < view->lines; i++) {
3543 struct blame *blame = view->line[i].data;
3545 if (!blame->commit)
3546 continue;
3548 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3549 return blame->commit;
3550 }
3552 {
3553 struct blame_commit *commit = calloc(1, sizeof(*commit));
3555 if (commit)
3556 string_ncopy(commit->id, id, SIZEOF_REV);
3557 return commit;
3558 }
3559 }
3561 static bool
3562 parse_number(char **posref, size_t *number, size_t min, size_t max)
3563 {
3564 char *pos = *posref;
3566 *posref = NULL;
3567 pos = strchr(pos + 1, ' ');
3568 if (!pos || !isdigit(pos[1]))
3569 return FALSE;
3570 *number = atoi(pos + 1);
3571 if (*number < min || *number > max)
3572 return FALSE;
3574 *posref = pos;
3575 return TRUE;
3576 }
3578 static struct blame_commit *
3579 parse_blame_commit(struct view *view, char *text, int *blamed)
3580 {
3581 struct blame_commit *commit;
3582 struct blame *blame;
3583 char *pos = text + SIZEOF_REV - 1;
3584 size_t lineno;
3585 size_t group;
3587 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3588 return NULL;
3590 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3591 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3592 return NULL;
3594 commit = get_blame_commit(view, text);
3595 if (!commit)
3596 return NULL;
3598 *blamed += group;
3599 while (group--) {
3600 struct line *line = &view->line[lineno + group - 1];
3602 blame = line->data;
3603 blame->commit = commit;
3604 blame->header = !group;
3605 line->dirty = 1;
3606 }
3608 return commit;
3609 }
3611 static bool
3612 blame_read_file(struct view *view, char *line)
3613 {
3614 if (!line) {
3615 FILE *pipe = NULL;
3617 if (view->lines > 0)
3618 pipe = popen(view->cmd, "r");
3619 else if (!view->parent)
3620 die("No blame exist for %s", view->vid);
3621 view->cmd[0] = 0;
3622 if (!pipe) {
3623 report("Failed to load blame data");
3624 return TRUE;
3625 }
3627 fclose(view->pipe);
3628 view->pipe = pipe;
3629 return FALSE;
3631 } else {
3632 size_t linelen = strlen(line);
3633 struct blame *blame = malloc(sizeof(*blame) + linelen);
3635 blame->commit = NULL;
3636 strncpy(blame->text, line, linelen);
3637 blame->text[linelen] = 0;
3638 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
3639 }
3640 }
3642 static bool
3643 match_blame_header(const char *name, char **line)
3644 {
3645 size_t namelen = strlen(name);
3646 bool matched = !strncmp(name, *line, namelen);
3648 if (matched)
3649 *line += namelen;
3651 return matched;
3652 }
3654 static bool
3655 blame_read(struct view *view, char *line)
3656 {
3657 static struct blame_commit *commit = NULL;
3658 static int blamed = 0;
3659 static time_t author_time;
3661 if (*view->cmd)
3662 return blame_read_file(view, line);
3664 if (!line) {
3665 /* Reset all! */
3666 commit = NULL;
3667 blamed = 0;
3668 string_format(view->ref, "%s", view->vid);
3669 if (view_is_displayed(view)) {
3670 update_view_title(view);
3671 redraw_view_from(view, 0);
3672 }
3673 return TRUE;
3674 }
3676 if (!commit) {
3677 commit = parse_blame_commit(view, line, &blamed);
3678 string_format(view->ref, "%s %2d%%", view->vid,
3679 blamed * 100 / view->lines);
3681 } else if (match_blame_header("author ", &line)) {
3682 string_ncopy(commit->author, line, strlen(line));
3684 } else if (match_blame_header("author-time ", &line)) {
3685 author_time = (time_t) atol(line);
3687 } else if (match_blame_header("author-tz ", &line)) {
3688 long tz;
3690 tz = ('0' - line[1]) * 60 * 60 * 10;
3691 tz += ('0' - line[2]) * 60 * 60;
3692 tz += ('0' - line[3]) * 60;
3693 tz += ('0' - line[4]) * 60;
3695 if (line[0] == '-')
3696 tz = -tz;
3698 author_time -= tz;
3699 gmtime_r(&author_time, &commit->time);
3701 } else if (match_blame_header("summary ", &line)) {
3702 string_ncopy(commit->title, line, strlen(line));
3704 } else if (match_blame_header("filename ", &line)) {
3705 string_ncopy(commit->filename, line, strlen(line));
3706 commit = NULL;
3707 }
3709 return TRUE;
3710 }
3712 static bool
3713 blame_draw(struct view *view, struct line *line, unsigned int lineno)
3714 {
3715 struct blame *blame = line->data;
3716 struct tm *time = NULL;
3717 char *id = NULL, *author = NULL;
3719 if (blame->commit && *blame->commit->filename) {
3720 id = blame->commit->id;
3721 author = blame->commit->author;
3722 time = &blame->commit->time;
3723 }
3725 if (opt_date && draw_date(view, time))
3726 return TRUE;
3728 if (opt_author &&
3729 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
3730 return TRUE;
3732 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
3733 return TRUE;
3735 if (draw_lineno(view, lineno))
3736 return TRUE;
3738 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
3739 return TRUE;
3740 }
3742 static enum request
3743 blame_request(struct view *view, enum request request, struct line *line)
3744 {
3745 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3746 struct blame *blame = line->data;
3748 switch (request) {
3749 case REQ_ENTER:
3750 if (!blame->commit) {
3751 report("No commit loaded yet");
3752 break;
3753 }
3755 if (!strcmp(blame->commit->id, NULL_ID)) {
3756 char path[SIZEOF_STR];
3758 if (sq_quote(path, 0, view->vid) >= sizeof(path))
3759 break;
3760 string_format(opt_cmd, "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s 2>/dev/null", path);
3761 }
3763 open_view(view, REQ_VIEW_DIFF, flags);
3764 break;
3766 default:
3767 return request;
3768 }
3770 return REQ_NONE;
3771 }
3773 static bool
3774 blame_grep(struct view *view, struct line *line)
3775 {
3776 struct blame *blame = line->data;
3777 struct blame_commit *commit = blame->commit;
3778 regmatch_t pmatch;
3780 #define MATCH(text, on) \
3781 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3783 if (commit) {
3784 char buf[DATE_COLS + 1];
3786 if (MATCH(commit->title, 1) ||
3787 MATCH(commit->author, opt_author) ||
3788 MATCH(commit->id, opt_date))
3789 return TRUE;
3791 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
3792 MATCH(buf, 1))
3793 return TRUE;
3794 }
3796 return MATCH(blame->text, 1);
3798 #undef MATCH
3799 }
3801 static void
3802 blame_select(struct view *view, struct line *line)
3803 {
3804 struct blame *blame = line->data;
3805 struct blame_commit *commit = blame->commit;
3807 if (!commit)
3808 return;
3810 if (!strcmp(commit->id, NULL_ID))
3811 string_ncopy(ref_commit, "HEAD", 4);
3812 else
3813 string_copy_rev(ref_commit, commit->id);
3814 }
3816 static struct view_ops blame_ops = {
3817 "line",
3818 blame_open,
3819 blame_read,
3820 blame_draw,
3821 blame_request,
3822 blame_grep,
3823 blame_select,
3824 };
3826 /*
3827 * Status backend
3828 */
3830 struct status {
3831 char status;
3832 struct {
3833 mode_t mode;
3834 char rev[SIZEOF_REV];
3835 char name[SIZEOF_STR];
3836 } old;
3837 struct {
3838 mode_t mode;
3839 char rev[SIZEOF_REV];
3840 char name[SIZEOF_STR];
3841 } new;
3842 };
3844 static char status_onbranch[SIZEOF_STR];
3845 static struct status stage_status;
3846 static enum line_type stage_line_type;
3847 static size_t stage_chunks;
3848 static int *stage_chunk;
3850 /* This should work even for the "On branch" line. */
3851 static inline bool
3852 status_has_none(struct view *view, struct line *line)
3853 {
3854 return line < view->line + view->lines && !line[1].data;
3855 }
3857 /* Get fields from the diff line:
3858 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
3859 */
3860 static inline bool
3861 status_get_diff(struct status *file, char *buf, size_t bufsize)
3862 {
3863 char *old_mode = buf + 1;
3864 char *new_mode = buf + 8;
3865 char *old_rev = buf + 15;
3866 char *new_rev = buf + 56;
3867 char *status = buf + 97;
3869 if (bufsize < 99 ||
3870 old_mode[-1] != ':' ||
3871 new_mode[-1] != ' ' ||
3872 old_rev[-1] != ' ' ||
3873 new_rev[-1] != ' ' ||
3874 status[-1] != ' ')
3875 return FALSE;
3877 file->status = *status;
3879 string_copy_rev(file->old.rev, old_rev);
3880 string_copy_rev(file->new.rev, new_rev);
3882 file->old.mode = strtoul(old_mode, NULL, 8);
3883 file->new.mode = strtoul(new_mode, NULL, 8);
3885 file->old.name[0] = file->new.name[0] = 0;
3887 return TRUE;
3888 }
3890 static bool
3891 status_run(struct view *view, const char cmd[], char status, enum line_type type)
3892 {
3893 struct status *file = NULL;
3894 struct status *unmerged = NULL;
3895 char buf[SIZEOF_STR * 4];
3896 size_t bufsize = 0;
3897 FILE *pipe;
3899 pipe = popen(cmd, "r");
3900 if (!pipe)
3901 return FALSE;
3903 add_line_data(view, NULL, type);
3905 while (!feof(pipe) && !ferror(pipe)) {
3906 char *sep;
3907 size_t readsize;
3909 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
3910 if (!readsize)
3911 break;
3912 bufsize += readsize;
3914 /* Process while we have NUL chars. */
3915 while ((sep = memchr(buf, 0, bufsize))) {
3916 size_t sepsize = sep - buf + 1;
3918 if (!file) {
3919 if (!realloc_lines(view, view->line_size + 1))
3920 goto error_out;
3922 file = calloc(1, sizeof(*file));
3923 if (!file)
3924 goto error_out;
3926 add_line_data(view, file, type);
3927 }
3929 /* Parse diff info part. */
3930 if (status) {
3931 file->status = status;
3932 if (status == 'A')
3933 string_copy(file->old.rev, NULL_ID);
3935 } else if (!file->status) {
3936 if (!status_get_diff(file, buf, sepsize))
3937 goto error_out;
3939 bufsize -= sepsize;
3940 memmove(buf, sep + 1, bufsize);
3942 sep = memchr(buf, 0, bufsize);
3943 if (!sep)
3944 break;
3945 sepsize = sep - buf + 1;
3947 /* Collapse all 'M'odified entries that
3948 * follow a associated 'U'nmerged entry.
3949 */
3950 if (file->status == 'U') {
3951 unmerged = file;
3953 } else if (unmerged) {
3954 int collapse = !strcmp(buf, unmerged->new.name);
3956 unmerged = NULL;
3957 if (collapse) {
3958 free(file);
3959 view->lines--;
3960 continue;
3961 }
3962 }
3963 }
3965 /* Grab the old name for rename/copy. */
3966 if (!*file->old.name &&
3967 (file->status == 'R' || file->status == 'C')) {
3968 sepsize = sep - buf + 1;
3969 string_ncopy(file->old.name, buf, sepsize);
3970 bufsize -= sepsize;
3971 memmove(buf, sep + 1, bufsize);
3973 sep = memchr(buf, 0, bufsize);
3974 if (!sep)
3975 break;
3976 sepsize = sep - buf + 1;
3977 }
3979 /* git-ls-files just delivers a NUL separated
3980 * list of file names similar to the second half
3981 * of the git-diff-* output. */
3982 string_ncopy(file->new.name, buf, sepsize);
3983 if (!*file->old.name)
3984 string_copy(file->old.name, file->new.name);
3985 bufsize -= sepsize;
3986 memmove(buf, sep + 1, bufsize);
3987 file = NULL;
3988 }
3989 }
3991 if (ferror(pipe)) {
3992 error_out:
3993 pclose(pipe);
3994 return FALSE;
3995 }
3997 if (!view->line[view->lines - 1].data)
3998 add_line_data(view, NULL, LINE_STAT_NONE);
4000 pclose(pipe);
4001 return TRUE;
4002 }
4004 /* Don't show unmerged entries in the staged section. */
4005 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached -M HEAD"
4006 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
4007 #define STATUS_LIST_OTHER_CMD \
4008 "git ls-files -z --others --exclude-standard"
4009 #define STATUS_LIST_NO_HEAD_CMD \
4010 "git ls-files -z --cached --exclude-standard"
4012 #define STATUS_DIFF_INDEX_SHOW_CMD \
4013 "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null"
4015 #define STATUS_DIFF_FILES_SHOW_CMD \
4016 "git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null"
4018 #define STATUS_DIFF_NO_HEAD_SHOW_CMD \
4019 "git diff --no-color --patch-with-stat /dev/null %s 2>/dev/null"
4021 /* First parse staged info using git-diff-index(1), then parse unstaged
4022 * info using git-diff-files(1), and finally untracked files using
4023 * git-ls-files(1). */
4024 static bool
4025 status_open(struct view *view)
4026 {
4027 unsigned long prev_lineno = view->lineno;
4028 size_t i;
4030 for (i = 0; i < view->lines; i++)
4031 free(view->line[i].data);
4032 free(view->line);
4033 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
4034 view->line = NULL;
4036 if (!realloc_lines(view, view->line_size + 7))
4037 return FALSE;
4039 add_line_data(view, NULL, LINE_STAT_HEAD);
4040 if (opt_no_head)
4041 string_copy(status_onbranch, "Initial commit");
4042 else if (!*opt_head)
4043 string_copy(status_onbranch, "Not currently on any branch");
4044 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4045 return FALSE;
4047 system("git update-index -q --refresh >/dev/null 2>/dev/null");
4049 if (opt_no_head) {
4050 if (!status_run(view, STATUS_LIST_NO_HEAD_CMD, 'A', LINE_STAT_STAGED))
4051 return FALSE;
4052 } else if (!status_run(view, STATUS_DIFF_INDEX_CMD, 0, LINE_STAT_STAGED)) {
4053 return FALSE;
4054 }
4056 if (!status_run(view, STATUS_DIFF_FILES_CMD, 0, LINE_STAT_UNSTAGED) ||
4057 !status_run(view, STATUS_LIST_OTHER_CMD, '?', LINE_STAT_UNTRACKED))
4058 return FALSE;
4060 /* If all went well restore the previous line number to stay in
4061 * the context or select a line with something that can be
4062 * updated. */
4063 if (prev_lineno >= view->lines)
4064 prev_lineno = view->lines - 1;
4065 while (prev_lineno < view->lines && !view->line[prev_lineno].data)
4066 prev_lineno++;
4067 while (prev_lineno > 0 && !view->line[prev_lineno].data)
4068 prev_lineno--;
4070 /* If the above fails, always skip the "On branch" line. */
4071 if (prev_lineno < view->lines)
4072 view->lineno = prev_lineno;
4073 else
4074 view->lineno = 1;
4076 if (view->lineno < view->offset)
4077 view->offset = view->lineno;
4078 else if (view->offset + view->height <= view->lineno)
4079 view->offset = view->lineno - view->height + 1;
4081 return TRUE;
4082 }
4084 static bool
4085 status_draw(struct view *view, struct line *line, unsigned int lineno)
4086 {
4087 struct status *status = line->data;
4088 enum line_type type;
4089 char *text;
4091 if (!status) {
4092 switch (line->type) {
4093 case LINE_STAT_STAGED:
4094 type = LINE_STAT_SECTION;
4095 text = "Changes to be committed:";
4096 break;
4098 case LINE_STAT_UNSTAGED:
4099 type = LINE_STAT_SECTION;
4100 text = "Changed but not updated:";
4101 break;
4103 case LINE_STAT_UNTRACKED:
4104 type = LINE_STAT_SECTION;
4105 text = "Untracked files:";
4106 break;
4108 case LINE_STAT_NONE:
4109 type = LINE_DEFAULT;
4110 text = " (no files)";
4111 break;
4113 case LINE_STAT_HEAD:
4114 type = LINE_STAT_HEAD;
4115 text = status_onbranch;
4116 break;
4118 default:
4119 return FALSE;
4120 }
4121 } else {
4122 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4124 buf[0] = status->status;
4125 if (draw_text(view, line->type, buf, TRUE))
4126 return TRUE;
4127 type = LINE_DEFAULT;
4128 text = status->new.name;
4129 }
4131 draw_text(view, type, text, TRUE);
4132 return TRUE;
4133 }
4135 static enum request
4136 status_enter(struct view *view, struct line *line)
4137 {
4138 struct status *status = line->data;
4139 char oldpath[SIZEOF_STR] = "";
4140 char newpath[SIZEOF_STR] = "";
4141 char *info;
4142 size_t cmdsize = 0;
4143 enum open_flags split;
4145 if (line->type == LINE_STAT_NONE ||
4146 (!status && line[1].type == LINE_STAT_NONE)) {
4147 report("No file to diff");
4148 return REQ_NONE;
4149 }
4151 if (status) {
4152 if (sq_quote(oldpath, 0, status->old.name) >= sizeof(oldpath))
4153 return REQ_QUIT;
4154 /* Diffs for unmerged entries are empty when pasing the
4155 * new path, so leave it empty. */
4156 if (status->status != 'U' &&
4157 sq_quote(newpath, 0, status->new.name) >= sizeof(newpath))
4158 return REQ_QUIT;
4159 }
4161 if (opt_cdup[0] &&
4162 line->type != LINE_STAT_UNTRACKED &&
4163 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
4164 return REQ_QUIT;
4166 switch (line->type) {
4167 case LINE_STAT_STAGED:
4168 if (opt_no_head) {
4169 if (!string_format_from(opt_cmd, &cmdsize,
4170 STATUS_DIFF_NO_HEAD_SHOW_CMD,
4171 newpath))
4172 return REQ_QUIT;
4173 } else {
4174 if (!string_format_from(opt_cmd, &cmdsize,
4175 STATUS_DIFF_INDEX_SHOW_CMD,
4176 oldpath, newpath))
4177 return REQ_QUIT;
4178 }
4180 if (status)
4181 info = "Staged changes to %s";
4182 else
4183 info = "Staged changes";
4184 break;
4186 case LINE_STAT_UNSTAGED:
4187 if (!string_format_from(opt_cmd, &cmdsize,
4188 STATUS_DIFF_FILES_SHOW_CMD, oldpath, newpath))
4189 return REQ_QUIT;
4190 if (status)
4191 info = "Unstaged changes to %s";
4192 else
4193 info = "Unstaged changes";
4194 break;
4196 case LINE_STAT_UNTRACKED:
4197 if (opt_pipe)
4198 return REQ_QUIT;
4200 if (!status) {
4201 report("No file to show");
4202 return REQ_NONE;
4203 }
4205 opt_pipe = fopen(status->new.name, "r");
4206 info = "Untracked file %s";
4207 break;
4209 case LINE_STAT_HEAD:
4210 return REQ_NONE;
4212 default:
4213 die("line type %d not handled in switch", line->type);
4214 }
4216 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4217 open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | split);
4218 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4219 if (status) {
4220 stage_status = *status;
4221 } else {
4222 memset(&stage_status, 0, sizeof(stage_status));
4223 }
4225 stage_line_type = line->type;
4226 stage_chunks = 0;
4227 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4228 }
4230 return REQ_NONE;
4231 }
4233 static bool
4234 status_exists(struct status *status, enum line_type type)
4235 {
4236 struct view *view = VIEW(REQ_VIEW_STATUS);
4237 struct line *line;
4239 for (line = view->line; line < view->line + view->lines; line++) {
4240 struct status *pos = line->data;
4242 if (line->type == type && pos &&
4243 !strcmp(status->new.name, pos->new.name))
4244 return TRUE;
4245 }
4247 return FALSE;
4248 }
4251 static FILE *
4252 status_update_prepare(enum line_type type)
4253 {
4254 char cmd[SIZEOF_STR];
4255 size_t cmdsize = 0;
4257 if (opt_cdup[0] &&
4258 type != LINE_STAT_UNTRACKED &&
4259 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4260 return NULL;
4262 switch (type) {
4263 case LINE_STAT_STAGED:
4264 string_add(cmd, cmdsize, "git update-index -z --index-info");
4265 break;
4267 case LINE_STAT_UNSTAGED:
4268 case LINE_STAT_UNTRACKED:
4269 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
4270 break;
4272 default:
4273 die("line type %d not handled in switch", type);
4274 }
4276 return popen(cmd, "w");
4277 }
4279 static bool
4280 status_update_write(FILE *pipe, struct status *status, enum line_type type)
4281 {
4282 char buf[SIZEOF_STR];
4283 size_t bufsize = 0;
4284 size_t written = 0;
4286 switch (type) {
4287 case LINE_STAT_STAGED:
4288 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4289 status->old.mode,
4290 status->old.rev,
4291 status->old.name, 0))
4292 return FALSE;
4293 break;
4295 case LINE_STAT_UNSTAGED:
4296 case LINE_STAT_UNTRACKED:
4297 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4298 return FALSE;
4299 break;
4301 default:
4302 die("line type %d not handled in switch", type);
4303 }
4305 while (!ferror(pipe) && written < bufsize) {
4306 written += fwrite(buf + written, 1, bufsize - written, pipe);
4307 }
4309 return written == bufsize;
4310 }
4312 static bool
4313 status_update_file(struct status *status, enum line_type type)
4314 {
4315 FILE *pipe = status_update_prepare(type);
4316 bool result;
4318 if (!pipe)
4319 return FALSE;
4321 result = status_update_write(pipe, status, type);
4322 pclose(pipe);
4323 return result;
4324 }
4326 static bool
4327 status_update_files(struct view *view, struct line *line)
4328 {
4329 FILE *pipe = status_update_prepare(line->type);
4330 bool result = TRUE;
4331 struct line *pos = view->line + view->lines;
4332 int files = 0;
4333 int file, done;
4335 if (!pipe)
4336 return FALSE;
4338 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4339 files++;
4341 for (file = 0, done = 0; result && file < files; line++, file++) {
4342 int almost_done = file * 100 / files;
4344 if (almost_done > done) {
4345 done = almost_done;
4346 string_format(view->ref, "updating file %u of %u (%d%% done)",
4347 file, files, done);
4348 update_view_title(view);
4349 }
4350 result = status_update_write(pipe, line->data, line->type);
4351 }
4353 pclose(pipe);
4354 return result;
4355 }
4357 static bool
4358 status_update(struct view *view)
4359 {
4360 struct line *line = &view->line[view->lineno];
4362 assert(view->lines);
4364 if (!line->data) {
4365 /* This should work even for the "On branch" line. */
4366 if (line < view->line + view->lines && !line[1].data) {
4367 report("Nothing to update");
4368 return FALSE;
4369 }
4371 if (!status_update_files(view, line + 1)) {
4372 report("Failed to update file status");
4373 return FALSE;
4374 }
4376 } else if (!status_update_file(line->data, line->type)) {
4377 report("Failed to update file status");
4378 return FALSE;
4379 }
4381 return TRUE;
4382 }
4384 static bool
4385 status_checkout(struct status *status, enum line_type type, bool has_none)
4386 {
4387 if (!status || type != LINE_STAT_UNSTAGED) {
4388 if (type == LINE_STAT_STAGED) {
4389 report("Cannot checkout staged files");
4390 } else if (type == LINE_STAT_UNTRACKED) {
4391 report("Cannot checkout untracked files");
4392 } else if (has_none) {
4393 report("Nothing to checkout");
4394 } else {
4395 report("Cannot checkout multiple files");
4396 }
4397 return FALSE;
4399 } else {
4400 char cmd[SIZEOF_STR];
4401 char file_sq[SIZEOF_STR];
4403 if (sq_quote(file_sq, 0, status->old.name) >= sizeof(file_sq) ||
4404 !string_format(cmd, "git checkout %s%s", opt_cdup, file_sq))
4405 return FALSE;
4407 return run_confirm(cmd, "Are you sure you want to overwrite any changes?");
4408 }
4409 }
4411 static enum request
4412 status_request(struct view *view, enum request request, struct line *line)
4413 {
4414 struct status *status = line->data;
4416 switch (request) {
4417 case REQ_STATUS_UPDATE:
4418 if (!status_update(view))
4419 return REQ_NONE;
4420 break;
4422 case REQ_STATUS_CHECKOUT:
4423 if (!status_checkout(status, line->type, status_has_none(view, line)))
4424 return REQ_NONE;
4425 break;
4427 case REQ_STATUS_MERGE:
4428 if (!status || status->status != 'U') {
4429 report("Merging only possible for files with unmerged status ('U').");
4430 return REQ_NONE;
4431 }
4432 open_mergetool(status->new.name);
4433 break;
4435 case REQ_EDIT:
4436 if (!status)
4437 return request;
4439 open_editor(status->status != '?', status->new.name);
4440 break;
4442 case REQ_VIEW_BLAME:
4443 if (status) {
4444 string_copy(opt_file, status->new.name);
4445 opt_ref[0] = 0;
4446 }
4447 return request;
4449 case REQ_ENTER:
4450 /* After returning the status view has been split to
4451 * show the stage view. No further reloading is
4452 * necessary. */
4453 status_enter(view, line);
4454 return REQ_NONE;
4456 case REQ_REFRESH:
4457 /* Simply reload the view. */
4458 break;
4460 default:
4461 return request;
4462 }
4464 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4466 return REQ_NONE;
4467 }
4469 static void
4470 status_select(struct view *view, struct line *line)
4471 {
4472 struct status *status = line->data;
4473 char file[SIZEOF_STR] = "all files";
4474 char *text;
4475 char *key;
4477 if (status && !string_format(file, "'%s'", status->new.name))
4478 return;
4480 if (!status && line[1].type == LINE_STAT_NONE)
4481 line++;
4483 switch (line->type) {
4484 case LINE_STAT_STAGED:
4485 text = "Press %s to unstage %s for commit";
4486 break;
4488 case LINE_STAT_UNSTAGED:
4489 text = "Press %s to stage %s for commit";
4490 break;
4492 case LINE_STAT_UNTRACKED:
4493 text = "Press %s to stage %s for addition";
4494 break;
4496 case LINE_STAT_HEAD:
4497 case LINE_STAT_NONE:
4498 text = "Nothing to update";
4499 break;
4501 default:
4502 die("line type %d not handled in switch", line->type);
4503 }
4505 if (status && status->status == 'U') {
4506 text = "Press %s to resolve conflict in %s";
4507 key = get_key(REQ_STATUS_MERGE);
4509 } else {
4510 key = get_key(REQ_STATUS_UPDATE);
4511 }
4513 string_format(view->ref, text, key, file);
4514 }
4516 static bool
4517 status_grep(struct view *view, struct line *line)
4518 {
4519 struct status *status = line->data;
4520 enum { S_STATUS, S_NAME, S_END } state;
4521 char buf[2] = "?";
4522 regmatch_t pmatch;
4524 if (!status)
4525 return FALSE;
4527 for (state = S_STATUS; state < S_END; state++) {
4528 char *text;
4530 switch (state) {
4531 case S_NAME: text = status->new.name; break;
4532 case S_STATUS:
4533 buf[0] = status->status;
4534 text = buf;
4535 break;
4537 default:
4538 return FALSE;
4539 }
4541 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4542 return TRUE;
4543 }
4545 return FALSE;
4546 }
4548 static struct view_ops status_ops = {
4549 "file",
4550 status_open,
4551 NULL,
4552 status_draw,
4553 status_request,
4554 status_grep,
4555 status_select,
4556 };
4559 static bool
4560 stage_diff_line(FILE *pipe, struct line *line)
4561 {
4562 char *buf = line->data;
4563 size_t bufsize = strlen(buf);
4564 size_t written = 0;
4566 while (!ferror(pipe) && written < bufsize) {
4567 written += fwrite(buf + written, 1, bufsize - written, pipe);
4568 }
4570 fputc('\n', pipe);
4572 return written == bufsize;
4573 }
4575 static bool
4576 stage_diff_write(FILE *pipe, struct line *line, struct line *end)
4577 {
4578 while (line < end) {
4579 if (!stage_diff_line(pipe, line++))
4580 return FALSE;
4581 if (line->type == LINE_DIFF_CHUNK ||
4582 line->type == LINE_DIFF_HEADER)
4583 break;
4584 }
4586 return TRUE;
4587 }
4589 static struct line *
4590 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4591 {
4592 for (; view->line < line; line--)
4593 if (line->type == type)
4594 return line;
4596 return NULL;
4597 }
4599 static bool
4600 stage_update_chunk(struct view *view, struct line *chunk)
4601 {
4602 char cmd[SIZEOF_STR];
4603 size_t cmdsize = 0;
4604 struct line *diff_hdr;
4605 FILE *pipe;
4607 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4608 if (!diff_hdr)
4609 return FALSE;
4611 if (opt_cdup[0] &&
4612 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4613 return FALSE;
4615 if (!string_format_from(cmd, &cmdsize,
4616 "git apply --whitespace=nowarn --cached %s - && "
4617 "git update-index -q --unmerged --refresh 2>/dev/null",
4618 stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
4619 return FALSE;
4621 pipe = popen(cmd, "w");
4622 if (!pipe)
4623 return FALSE;
4625 if (!stage_diff_write(pipe, diff_hdr, chunk) ||
4626 !stage_diff_write(pipe, chunk, view->line + view->lines))
4627 chunk = NULL;
4629 pclose(pipe);
4631 return chunk ? TRUE : FALSE;
4632 }
4634 static bool
4635 stage_update(struct view *view, struct line *line)
4636 {
4637 struct line *chunk = NULL;
4639 if (!opt_no_head && stage_line_type != LINE_STAT_UNTRACKED)
4640 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4642 if (chunk) {
4643 if (!stage_update_chunk(view, chunk)) {
4644 report("Failed to apply chunk");
4645 return FALSE;
4646 }
4648 } else if (!stage_status.status) {
4649 view = VIEW(REQ_VIEW_STATUS);
4651 for (line = view->line; line < view->line + view->lines; line++)
4652 if (line->type == stage_line_type)
4653 break;
4655 if (!status_update_files(view, line + 1)) {
4656 report("Failed to update files");
4657 return FALSE;
4658 }
4660 } else if (!status_update_file(&stage_status, stage_line_type)) {
4661 report("Failed to update file");
4662 return FALSE;
4663 }
4665 return TRUE;
4666 }
4668 static void
4669 stage_next(struct view *view, struct line *line)
4670 {
4671 int i;
4673 if (!stage_chunks) {
4674 static size_t alloc = 0;
4675 int *tmp;
4677 for (line = view->line; line < view->line + view->lines; line++) {
4678 if (line->type != LINE_DIFF_CHUNK)
4679 continue;
4681 tmp = realloc_items(stage_chunk, &alloc,
4682 stage_chunks, sizeof(*tmp));
4683 if (!tmp) {
4684 report("Allocation failure");
4685 return;
4686 }
4688 stage_chunk = tmp;
4689 stage_chunk[stage_chunks++] = line - view->line;
4690 }
4691 }
4693 for (i = 0; i < stage_chunks; i++) {
4694 if (stage_chunk[i] > view->lineno) {
4695 do_scroll_view(view, stage_chunk[i] - view->lineno);
4696 report("Chunk %d of %d", i + 1, stage_chunks);
4697 return;
4698 }
4699 }
4701 report("No next chunk found");
4702 }
4704 static enum request
4705 stage_request(struct view *view, enum request request, struct line *line)
4706 {
4707 switch (request) {
4708 case REQ_STATUS_UPDATE:
4709 if (!stage_update(view, line))
4710 return REQ_NONE;
4711 break;
4713 case REQ_STATUS_CHECKOUT:
4714 if (!status_checkout(stage_status.status ? &stage_status : NULL,
4715 stage_line_type, FALSE))
4716 return REQ_NONE;
4717 break;
4719 case REQ_STAGE_NEXT:
4720 if (stage_line_type == LINE_STAT_UNTRACKED) {
4721 report("File is untracked; press %s to add",
4722 get_key(REQ_STATUS_UPDATE));
4723 return REQ_NONE;
4724 }
4725 stage_next(view, line);
4726 return REQ_NONE;
4728 case REQ_EDIT:
4729 if (!stage_status.new.name[0])
4730 return request;
4732 open_editor(stage_status.status != '?', stage_status.new.name);
4733 break;
4735 case REQ_REFRESH:
4736 /* Reload everything ... */
4737 break;
4739 case REQ_VIEW_BLAME:
4740 if (stage_status.new.name[0]) {
4741 string_copy(opt_file, stage_status.new.name);
4742 opt_ref[0] = 0;
4743 }
4744 return request;
4746 case REQ_ENTER:
4747 return pager_request(view, request, line);
4749 default:
4750 return request;
4751 }
4753 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
4755 /* Check whether the staged entry still exists, and close the
4756 * stage view if it doesn't. */
4757 if (!status_exists(&stage_status, stage_line_type))
4758 return REQ_VIEW_CLOSE;
4760 if (stage_line_type == LINE_STAT_UNTRACKED)
4761 opt_pipe = fopen(stage_status.new.name, "r");
4762 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
4764 return REQ_NONE;
4765 }
4767 static struct view_ops stage_ops = {
4768 "line",
4769 NULL,
4770 pager_read,
4771 pager_draw,
4772 stage_request,
4773 pager_grep,
4774 pager_select,
4775 };
4778 /*
4779 * Revision graph
4780 */
4782 struct commit {
4783 char id[SIZEOF_REV]; /* SHA1 ID. */
4784 char title[128]; /* First line of the commit message. */
4785 char author[75]; /* Author of the commit. */
4786 struct tm time; /* Date from the author ident. */
4787 struct ref **refs; /* Repository references. */
4788 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
4789 size_t graph_size; /* The width of the graph array. */
4790 bool has_parents; /* Rewritten --parents seen. */
4791 };
4793 /* Size of rev graph with no "padding" columns */
4794 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
4796 struct rev_graph {
4797 struct rev_graph *prev, *next, *parents;
4798 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
4799 size_t size;
4800 struct commit *commit;
4801 size_t pos;
4802 unsigned int boundary:1;
4803 };
4805 /* Parents of the commit being visualized. */
4806 static struct rev_graph graph_parents[4];
4808 /* The current stack of revisions on the graph. */
4809 static struct rev_graph graph_stacks[4] = {
4810 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
4811 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
4812 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
4813 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
4814 };
4816 static inline bool
4817 graph_parent_is_merge(struct rev_graph *graph)
4818 {
4819 return graph->parents->size > 1;
4820 }
4822 static inline void
4823 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
4824 {
4825 struct commit *commit = graph->commit;
4827 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
4828 commit->graph[commit->graph_size++] = symbol;
4829 }
4831 static void
4832 clear_rev_graph(struct rev_graph *graph)
4833 {
4834 graph->boundary = 0;
4835 graph->size = graph->pos = 0;
4836 graph->commit = NULL;
4837 memset(graph->parents, 0, sizeof(*graph->parents));
4838 }
4840 static void
4841 done_rev_graph(struct rev_graph *graph)
4842 {
4843 if (graph_parent_is_merge(graph) &&
4844 graph->pos < graph->size - 1 &&
4845 graph->next->size == graph->size + graph->parents->size - 1) {
4846 size_t i = graph->pos + graph->parents->size - 1;
4848 graph->commit->graph_size = i * 2;
4849 while (i < graph->next->size - 1) {
4850 append_to_rev_graph(graph, ' ');
4851 append_to_rev_graph(graph, '\\');
4852 i++;
4853 }
4854 }
4856 clear_rev_graph(graph);
4857 }
4859 static void
4860 push_rev_graph(struct rev_graph *graph, char *parent)
4861 {
4862 int i;
4864 /* "Collapse" duplicate parents lines.
4865 *
4866 * FIXME: This needs to also update update the drawn graph but
4867 * for now it just serves as a method for pruning graph lines. */
4868 for (i = 0; i < graph->size; i++)
4869 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
4870 return;
4872 if (graph->size < SIZEOF_REVITEMS) {
4873 string_copy_rev(graph->rev[graph->size++], parent);
4874 }
4875 }
4877 static chtype
4878 get_rev_graph_symbol(struct rev_graph *graph)
4879 {
4880 chtype symbol;
4882 if (graph->boundary)
4883 symbol = REVGRAPH_BOUND;
4884 else if (graph->parents->size == 0)
4885 symbol = REVGRAPH_INIT;
4886 else if (graph_parent_is_merge(graph))
4887 symbol = REVGRAPH_MERGE;
4888 else if (graph->pos >= graph->size)
4889 symbol = REVGRAPH_BRANCH;
4890 else
4891 symbol = REVGRAPH_COMMIT;
4893 return symbol;
4894 }
4896 static void
4897 draw_rev_graph(struct rev_graph *graph)
4898 {
4899 struct rev_filler {
4900 chtype separator, line;
4901 };
4902 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
4903 static struct rev_filler fillers[] = {
4904 { ' ', '|' },
4905 { '`', '.' },
4906 { '\'', ' ' },
4907 { '/', ' ' },
4908 };
4909 chtype symbol = get_rev_graph_symbol(graph);
4910 struct rev_filler *filler;
4911 size_t i;
4913 if (opt_line_graphics)
4914 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
4916 filler = &fillers[DEFAULT];
4918 for (i = 0; i < graph->pos; i++) {
4919 append_to_rev_graph(graph, filler->line);
4920 if (graph_parent_is_merge(graph->prev) &&
4921 graph->prev->pos == i)
4922 filler = &fillers[RSHARP];
4924 append_to_rev_graph(graph, filler->separator);
4925 }
4927 /* Place the symbol for this revision. */
4928 append_to_rev_graph(graph, symbol);
4930 if (graph->prev->size > graph->size)
4931 filler = &fillers[RDIAG];
4932 else
4933 filler = &fillers[DEFAULT];
4935 i++;
4937 for (; i < graph->size; i++) {
4938 append_to_rev_graph(graph, filler->separator);
4939 append_to_rev_graph(graph, filler->line);
4940 if (graph_parent_is_merge(graph->prev) &&
4941 i < graph->prev->pos + graph->parents->size)
4942 filler = &fillers[RSHARP];
4943 if (graph->prev->size > graph->size)
4944 filler = &fillers[LDIAG];
4945 }
4947 if (graph->prev->size > graph->size) {
4948 append_to_rev_graph(graph, filler->separator);
4949 if (filler->line != ' ')
4950 append_to_rev_graph(graph, filler->line);
4951 }
4952 }
4954 /* Prepare the next rev graph */
4955 static void
4956 prepare_rev_graph(struct rev_graph *graph)
4957 {
4958 size_t i;
4960 /* First, traverse all lines of revisions up to the active one. */
4961 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
4962 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
4963 break;
4965 push_rev_graph(graph->next, graph->rev[graph->pos]);
4966 }
4968 /* Interleave the new revision parent(s). */
4969 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
4970 push_rev_graph(graph->next, graph->parents->rev[i]);
4972 /* Lastly, put any remaining revisions. */
4973 for (i = graph->pos + 1; i < graph->size; i++)
4974 push_rev_graph(graph->next, graph->rev[i]);
4975 }
4977 static void
4978 update_rev_graph(struct rev_graph *graph)
4979 {
4980 /* If this is the finalizing update ... */
4981 if (graph->commit)
4982 prepare_rev_graph(graph);
4984 /* Graph visualization needs a one rev look-ahead,
4985 * so the first update doesn't visualize anything. */
4986 if (!graph->prev->commit)
4987 return;
4989 draw_rev_graph(graph->prev);
4990 done_rev_graph(graph->prev->prev);
4991 }
4994 /*
4995 * Main view backend
4996 */
4998 static bool
4999 main_draw(struct view *view, struct line *line, unsigned int lineno)
5000 {
5001 struct commit *commit = line->data;
5003 if (!*commit->author)
5004 return FALSE;
5006 if (opt_date && draw_date(view, &commit->time))
5007 return TRUE;
5009 if (opt_author &&
5010 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5011 return TRUE;
5013 if (opt_rev_graph && commit->graph_size &&
5014 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5015 return TRUE;
5017 if (opt_show_refs && commit->refs) {
5018 size_t i = 0;
5020 do {
5021 enum line_type type;
5023 if (commit->refs[i]->head)
5024 type = LINE_MAIN_HEAD;
5025 else if (commit->refs[i]->ltag)
5026 type = LINE_MAIN_LOCAL_TAG;
5027 else if (commit->refs[i]->tag)
5028 type = LINE_MAIN_TAG;
5029 else if (commit->refs[i]->tracked)
5030 type = LINE_MAIN_TRACKED;
5031 else if (commit->refs[i]->remote)
5032 type = LINE_MAIN_REMOTE;
5033 else
5034 type = LINE_MAIN_REF;
5036 if (draw_text(view, type, "[", TRUE) ||
5037 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5038 draw_text(view, type, "]", TRUE))
5039 return TRUE;
5041 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5042 return TRUE;
5043 } while (commit->refs[i++]->next);
5044 }
5046 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5047 return TRUE;
5048 }
5050 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5051 static bool
5052 main_read(struct view *view, char *line)
5053 {
5054 static struct rev_graph *graph = graph_stacks;
5055 enum line_type type;
5056 struct commit *commit;
5058 if (!line) {
5059 int i;
5061 if (!view->lines && !view->parent)
5062 die("No revisions match the given arguments.");
5063 if (view->lines > 0) {
5064 commit = view->line[view->lines - 1].data;
5065 if (!*commit->author) {
5066 view->lines--;
5067 free(commit);
5068 graph->commit = NULL;
5069 }
5070 }
5071 update_rev_graph(graph);
5073 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5074 clear_rev_graph(&graph_stacks[i]);
5075 return TRUE;
5076 }
5078 type = get_line_type(line);
5079 if (type == LINE_COMMIT) {
5080 commit = calloc(1, sizeof(struct commit));
5081 if (!commit)
5082 return FALSE;
5084 line += STRING_SIZE("commit ");
5085 if (*line == '-') {
5086 graph->boundary = 1;
5087 line++;
5088 }
5090 string_copy_rev(commit->id, line);
5091 commit->refs = get_refs(commit->id);
5092 graph->commit = commit;
5093 add_line_data(view, commit, LINE_MAIN_COMMIT);
5095 while ((line = strchr(line, ' '))) {
5096 line++;
5097 push_rev_graph(graph->parents, line);
5098 commit->has_parents = TRUE;
5099 }
5100 return TRUE;
5101 }
5103 if (!view->lines)
5104 return TRUE;
5105 commit = view->line[view->lines - 1].data;
5107 switch (type) {
5108 case LINE_PARENT:
5109 if (commit->has_parents)
5110 break;
5111 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5112 break;
5114 case LINE_AUTHOR:
5115 {
5116 /* Parse author lines where the name may be empty:
5117 * author <email@address.tld> 1138474660 +0100
5118 */
5119 char *ident = line + STRING_SIZE("author ");
5120 char *nameend = strchr(ident, '<');
5121 char *emailend = strchr(ident, '>');
5123 if (!nameend || !emailend)
5124 break;
5126 update_rev_graph(graph);
5127 graph = graph->next;
5129 *nameend = *emailend = 0;
5130 ident = chomp_string(ident);
5131 if (!*ident) {
5132 ident = chomp_string(nameend + 1);
5133 if (!*ident)
5134 ident = "Unknown";
5135 }
5137 string_ncopy(commit->author, ident, strlen(ident));
5139 /* Parse epoch and timezone */
5140 if (emailend[1] == ' ') {
5141 char *secs = emailend + 2;
5142 char *zone = strchr(secs, ' ');
5143 time_t time = (time_t) atol(secs);
5145 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5146 long tz;
5148 zone++;
5149 tz = ('0' - zone[1]) * 60 * 60 * 10;
5150 tz += ('0' - zone[2]) * 60 * 60;
5151 tz += ('0' - zone[3]) * 60;
5152 tz += ('0' - zone[4]) * 60;
5154 if (zone[0] == '-')
5155 tz = -tz;
5157 time -= tz;
5158 }
5160 gmtime_r(&time, &commit->time);
5161 }
5162 break;
5163 }
5164 default:
5165 /* Fill in the commit title if it has not already been set. */
5166 if (commit->title[0])
5167 break;
5169 /* Require titles to start with a non-space character at the
5170 * offset used by git log. */
5171 if (strncmp(line, " ", 4))
5172 break;
5173 line += 4;
5174 /* Well, if the title starts with a whitespace character,
5175 * try to be forgiving. Otherwise we end up with no title. */
5176 while (isspace(*line))
5177 line++;
5178 if (*line == '\0')
5179 break;
5180 /* FIXME: More graceful handling of titles; append "..." to
5181 * shortened titles, etc. */
5183 string_ncopy(commit->title, line, strlen(line));
5184 }
5186 return TRUE;
5187 }
5189 static enum request
5190 main_request(struct view *view, enum request request, struct line *line)
5191 {
5192 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5194 switch (request) {
5195 case REQ_ENTER:
5196 open_view(view, REQ_VIEW_DIFF, flags);
5197 break;
5198 case REQ_REFRESH:
5199 load_refs();
5200 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5201 break;
5202 default:
5203 return request;
5204 }
5206 return REQ_NONE;
5207 }
5209 static bool
5210 grep_refs(struct ref **refs, regex_t *regex)
5211 {
5212 regmatch_t pmatch;
5213 size_t i = 0;
5215 if (!refs)
5216 return FALSE;
5217 do {
5218 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5219 return TRUE;
5220 } while (refs[i++]->next);
5222 return FALSE;
5223 }
5225 static bool
5226 main_grep(struct view *view, struct line *line)
5227 {
5228 struct commit *commit = line->data;
5229 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5230 char buf[DATE_COLS + 1];
5231 regmatch_t pmatch;
5233 for (state = S_TITLE; state < S_END; state++) {
5234 char *text;
5236 switch (state) {
5237 case S_TITLE: text = commit->title; break;
5238 case S_AUTHOR:
5239 if (!opt_author)
5240 continue;
5241 text = commit->author;
5242 break;
5243 case S_DATE:
5244 if (!opt_date)
5245 continue;
5246 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5247 continue;
5248 text = buf;
5249 break;
5250 case S_REFS:
5251 if (!opt_show_refs)
5252 continue;
5253 if (grep_refs(commit->refs, view->regex) == TRUE)
5254 return TRUE;
5255 continue;
5256 default:
5257 return FALSE;
5258 }
5260 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5261 return TRUE;
5262 }
5264 return FALSE;
5265 }
5267 static void
5268 main_select(struct view *view, struct line *line)
5269 {
5270 struct commit *commit = line->data;
5272 string_copy_rev(view->ref, commit->id);
5273 string_copy_rev(ref_commit, view->ref);
5274 }
5276 static struct view_ops main_ops = {
5277 "commit",
5278 NULL,
5279 main_read,
5280 main_draw,
5281 main_request,
5282 main_grep,
5283 main_select,
5284 };
5287 /*
5288 * Unicode / UTF-8 handling
5289 *
5290 * NOTE: Much of the following code for dealing with unicode is derived from
5291 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5292 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5293 */
5295 /* I've (over)annotated a lot of code snippets because I am not entirely
5296 * confident that the approach taken by this small UTF-8 interface is correct.
5297 * --jonas */
5299 static inline int
5300 unicode_width(unsigned long c)
5301 {
5302 if (c >= 0x1100 &&
5303 (c <= 0x115f /* Hangul Jamo */
5304 || c == 0x2329
5305 || c == 0x232a
5306 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5307 /* CJK ... Yi */
5308 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5309 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5310 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5311 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5312 || (c >= 0xffe0 && c <= 0xffe6)
5313 || (c >= 0x20000 && c <= 0x2fffd)
5314 || (c >= 0x30000 && c <= 0x3fffd)))
5315 return 2;
5317 if (c == '\t')
5318 return opt_tab_size;
5320 return 1;
5321 }
5323 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5324 * Illegal bytes are set one. */
5325 static const unsigned char utf8_bytes[256] = {
5326 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5327 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5328 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5329 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5330 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5331 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,
5332 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,
5333 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,
5334 };
5336 /* Decode UTF-8 multi-byte representation into a unicode character. */
5337 static inline unsigned long
5338 utf8_to_unicode(const char *string, size_t length)
5339 {
5340 unsigned long unicode;
5342 switch (length) {
5343 case 1:
5344 unicode = string[0];
5345 break;
5346 case 2:
5347 unicode = (string[0] & 0x1f) << 6;
5348 unicode += (string[1] & 0x3f);
5349 break;
5350 case 3:
5351 unicode = (string[0] & 0x0f) << 12;
5352 unicode += ((string[1] & 0x3f) << 6);
5353 unicode += (string[2] & 0x3f);
5354 break;
5355 case 4:
5356 unicode = (string[0] & 0x0f) << 18;
5357 unicode += ((string[1] & 0x3f) << 12);
5358 unicode += ((string[2] & 0x3f) << 6);
5359 unicode += (string[3] & 0x3f);
5360 break;
5361 case 5:
5362 unicode = (string[0] & 0x0f) << 24;
5363 unicode += ((string[1] & 0x3f) << 18);
5364 unicode += ((string[2] & 0x3f) << 12);
5365 unicode += ((string[3] & 0x3f) << 6);
5366 unicode += (string[4] & 0x3f);
5367 break;
5368 case 6:
5369 unicode = (string[0] & 0x01) << 30;
5370 unicode += ((string[1] & 0x3f) << 24);
5371 unicode += ((string[2] & 0x3f) << 18);
5372 unicode += ((string[3] & 0x3f) << 12);
5373 unicode += ((string[4] & 0x3f) << 6);
5374 unicode += (string[5] & 0x3f);
5375 break;
5376 default:
5377 die("Invalid unicode length");
5378 }
5380 /* Invalid characters could return the special 0xfffd value but NUL
5381 * should be just as good. */
5382 return unicode > 0xffff ? 0 : unicode;
5383 }
5385 /* Calculates how much of string can be shown within the given maximum width
5386 * and sets trimmed parameter to non-zero value if all of string could not be
5387 * shown. If the reserve flag is TRUE, it will reserve at least one
5388 * trailing character, which can be useful when drawing a delimiter.
5389 *
5390 * Returns the number of bytes to output from string to satisfy max_width. */
5391 static size_t
5392 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5393 {
5394 const char *start = string;
5395 const char *end = strchr(string, '\0');
5396 unsigned char last_bytes = 0;
5397 size_t last_ucwidth = 0;
5399 *width = 0;
5400 *trimmed = 0;
5402 while (string < end) {
5403 int c = *(unsigned char *) string;
5404 unsigned char bytes = utf8_bytes[c];
5405 size_t ucwidth;
5406 unsigned long unicode;
5408 if (string + bytes > end)
5409 break;
5411 /* Change representation to figure out whether
5412 * it is a single- or double-width character. */
5414 unicode = utf8_to_unicode(string, bytes);
5415 /* FIXME: Graceful handling of invalid unicode character. */
5416 if (!unicode)
5417 break;
5419 ucwidth = unicode_width(unicode);
5420 *width += ucwidth;
5421 if (*width > max_width) {
5422 *trimmed = 1;
5423 *width -= ucwidth;
5424 if (reserve && *width == max_width) {
5425 string -= last_bytes;
5426 *width -= last_ucwidth;
5427 }
5428 break;
5429 }
5431 string += bytes;
5432 last_bytes = bytes;
5433 last_ucwidth = ucwidth;
5434 }
5436 return string - start;
5437 }
5440 /*
5441 * Status management
5442 */
5444 /* Whether or not the curses interface has been initialized. */
5445 static bool cursed = FALSE;
5447 /* The status window is used for polling keystrokes. */
5448 static WINDOW *status_win;
5450 static bool status_empty = TRUE;
5452 /* Update status and title window. */
5453 static void
5454 report(const char *msg, ...)
5455 {
5456 struct view *view = display[current_view];
5458 if (input_mode)
5459 return;
5461 if (!view) {
5462 char buf[SIZEOF_STR];
5463 va_list args;
5465 va_start(args, msg);
5466 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5467 buf[sizeof(buf) - 1] = 0;
5468 buf[sizeof(buf) - 2] = '.';
5469 buf[sizeof(buf) - 3] = '.';
5470 buf[sizeof(buf) - 4] = '.';
5471 }
5472 va_end(args);
5473 die("%s", buf);
5474 }
5476 if (!status_empty || *msg) {
5477 va_list args;
5479 va_start(args, msg);
5481 wmove(status_win, 0, 0);
5482 if (*msg) {
5483 vwprintw(status_win, msg, args);
5484 status_empty = FALSE;
5485 } else {
5486 status_empty = TRUE;
5487 }
5488 wclrtoeol(status_win);
5489 wrefresh(status_win);
5491 va_end(args);
5492 }
5494 update_view_title(view);
5495 update_display_cursor(view);
5496 }
5498 /* Controls when nodelay should be in effect when polling user input. */
5499 static void
5500 set_nonblocking_input(bool loading)
5501 {
5502 static unsigned int loading_views;
5504 if ((loading == FALSE && loading_views-- == 1) ||
5505 (loading == TRUE && loading_views++ == 0))
5506 nodelay(status_win, loading);
5507 }
5509 static void
5510 init_display(void)
5511 {
5512 int x, y;
5514 /* Initialize the curses library */
5515 if (isatty(STDIN_FILENO)) {
5516 cursed = !!initscr();
5517 } else {
5518 /* Leave stdin and stdout alone when acting as a pager. */
5519 FILE *io = fopen("/dev/tty", "r+");
5521 if (!io)
5522 die("Failed to open /dev/tty");
5523 cursed = !!newterm(NULL, io, io);
5524 }
5526 if (!cursed)
5527 die("Failed to initialize curses");
5529 nonl(); /* Tell curses not to do NL->CR/NL on output */
5530 cbreak(); /* Take input chars one at a time, no wait for \n */
5531 noecho(); /* Don't echo input */
5532 leaveok(stdscr, TRUE);
5534 if (has_colors())
5535 init_colors();
5537 getmaxyx(stdscr, y, x);
5538 status_win = newwin(1, 0, y - 1, 0);
5539 if (!status_win)
5540 die("Failed to create status window");
5542 /* Enable keyboard mapping */
5543 keypad(status_win, TRUE);
5544 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5546 TABSIZE = opt_tab_size;
5547 if (opt_line_graphics) {
5548 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5549 }
5550 }
5552 static bool
5553 prompt_yesno(const char *prompt)
5554 {
5555 enum { WAIT, STOP, CANCEL } status = WAIT;
5556 bool answer = FALSE;
5558 while (status == WAIT) {
5559 struct view *view;
5560 int i, key;
5562 input_mode = TRUE;
5564 foreach_view (view, i)
5565 update_view(view);
5567 input_mode = FALSE;
5569 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
5570 wclrtoeol(status_win);
5572 /* Refresh, accept single keystroke of input */
5573 key = wgetch(status_win);
5574 switch (key) {
5575 case ERR:
5576 break;
5578 case 'y':
5579 case 'Y':
5580 answer = TRUE;
5581 status = STOP;
5582 break;
5584 case KEY_ESC:
5585 case KEY_RETURN:
5586 case KEY_ENTER:
5587 case KEY_BACKSPACE:
5588 case 'n':
5589 case 'N':
5590 case '\n':
5591 default:
5592 answer = FALSE;
5593 status = CANCEL;
5594 }
5595 }
5597 /* Clear the status window */
5598 status_empty = FALSE;
5599 report("");
5601 return answer;
5602 }
5604 static char *
5605 read_prompt(const char *prompt)
5606 {
5607 enum { READING, STOP, CANCEL } status = READING;
5608 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
5609 int pos = 0;
5611 while (status == READING) {
5612 struct view *view;
5613 int i, key;
5615 input_mode = TRUE;
5617 foreach_view (view, i)
5618 update_view(view);
5620 input_mode = FALSE;
5622 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5623 wclrtoeol(status_win);
5625 /* Refresh, accept single keystroke of input */
5626 key = wgetch(status_win);
5627 switch (key) {
5628 case KEY_RETURN:
5629 case KEY_ENTER:
5630 case '\n':
5631 status = pos ? STOP : CANCEL;
5632 break;
5634 case KEY_BACKSPACE:
5635 if (pos > 0)
5636 pos--;
5637 else
5638 status = CANCEL;
5639 break;
5641 case KEY_ESC:
5642 status = CANCEL;
5643 break;
5645 case ERR:
5646 break;
5648 default:
5649 if (pos >= sizeof(buf)) {
5650 report("Input string too long");
5651 return NULL;
5652 }
5654 if (isprint(key))
5655 buf[pos++] = (char) key;
5656 }
5657 }
5659 /* Clear the status window */
5660 status_empty = FALSE;
5661 report("");
5663 if (status == CANCEL)
5664 return NULL;
5666 buf[pos++] = 0;
5668 return buf;
5669 }
5671 /*
5672 * Repository references
5673 */
5675 static struct ref *refs = NULL;
5676 static size_t refs_alloc = 0;
5677 static size_t refs_size = 0;
5679 /* Id <-> ref store */
5680 static struct ref ***id_refs = NULL;
5681 static size_t id_refs_alloc = 0;
5682 static size_t id_refs_size = 0;
5684 static struct ref **
5685 get_refs(char *id)
5686 {
5687 struct ref ***tmp_id_refs;
5688 struct ref **ref_list = NULL;
5689 size_t ref_list_alloc = 0;
5690 size_t ref_list_size = 0;
5691 size_t i;
5693 for (i = 0; i < id_refs_size; i++)
5694 if (!strcmp(id, id_refs[i][0]->id))
5695 return id_refs[i];
5697 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
5698 sizeof(*id_refs));
5699 if (!tmp_id_refs)
5700 return NULL;
5702 id_refs = tmp_id_refs;
5704 for (i = 0; i < refs_size; i++) {
5705 struct ref **tmp;
5707 if (strcmp(id, refs[i].id))
5708 continue;
5710 tmp = realloc_items(ref_list, &ref_list_alloc,
5711 ref_list_size + 1, sizeof(*ref_list));
5712 if (!tmp) {
5713 if (ref_list)
5714 free(ref_list);
5715 return NULL;
5716 }
5718 ref_list = tmp;
5719 if (ref_list_size > 0)
5720 ref_list[ref_list_size - 1]->next = 1;
5721 ref_list[ref_list_size] = &refs[i];
5723 /* XXX: The properties of the commit chains ensures that we can
5724 * safely modify the shared ref. The repo references will
5725 * always be similar for the same id. */
5726 ref_list[ref_list_size]->next = 0;
5727 ref_list_size++;
5728 }
5730 if (ref_list)
5731 id_refs[id_refs_size++] = ref_list;
5733 return ref_list;
5734 }
5736 static int
5737 read_ref(char *id, size_t idlen, char *name, size_t namelen)
5738 {
5739 struct ref *ref;
5740 bool tag = FALSE;
5741 bool ltag = FALSE;
5742 bool remote = FALSE;
5743 bool tracked = FALSE;
5744 bool check_replace = FALSE;
5745 bool head = FALSE;
5747 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
5748 if (!strcmp(name + namelen - 3, "^{}")) {
5749 namelen -= 3;
5750 name[namelen] = 0;
5751 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
5752 check_replace = TRUE;
5753 } else {
5754 ltag = TRUE;
5755 }
5757 tag = TRUE;
5758 namelen -= STRING_SIZE("refs/tags/");
5759 name += STRING_SIZE("refs/tags/");
5761 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
5762 remote = TRUE;
5763 namelen -= STRING_SIZE("refs/remotes/");
5764 name += STRING_SIZE("refs/remotes/");
5765 tracked = !strcmp(opt_remote, name);
5767 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5768 namelen -= STRING_SIZE("refs/heads/");
5769 name += STRING_SIZE("refs/heads/");
5770 head = !strncmp(opt_head, name, namelen);
5772 } else if (!strcmp(name, "HEAD")) {
5773 opt_no_head = FALSE;
5774 return OK;
5775 }
5777 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
5778 /* it's an annotated tag, replace the previous sha1 with the
5779 * resolved commit id; relies on the fact git-ls-remote lists
5780 * the commit id of an annotated tag right beofre the commit id
5781 * it points to. */
5782 refs[refs_size - 1].ltag = ltag;
5783 string_copy_rev(refs[refs_size - 1].id, id);
5785 return OK;
5786 }
5787 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
5788 if (!refs)
5789 return ERR;
5791 ref = &refs[refs_size++];
5792 ref->name = malloc(namelen + 1);
5793 if (!ref->name)
5794 return ERR;
5796 strncpy(ref->name, name, namelen);
5797 ref->name[namelen] = 0;
5798 ref->head = head;
5799 ref->tag = tag;
5800 ref->ltag = ltag;
5801 ref->remote = remote;
5802 ref->tracked = tracked;
5803 string_copy_rev(ref->id, id);
5805 return OK;
5806 }
5808 static int
5809 load_refs(void)
5810 {
5811 const char *cmd_env = getenv("TIG_LS_REMOTE");
5812 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
5814 if (!*opt_git_dir)
5815 return OK;
5817 while (refs_size > 0)
5818 free(refs[--refs_size].name);
5819 while (id_refs_size > 0)
5820 free(id_refs[--id_refs_size]);
5822 return read_properties(popen(cmd, "r"), "\t", read_ref);
5823 }
5825 static int
5826 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
5827 {
5828 if (!strcmp(name, "i18n.commitencoding"))
5829 string_ncopy(opt_encoding, value, valuelen);
5831 if (!strcmp(name, "core.editor"))
5832 string_ncopy(opt_editor, value, valuelen);
5834 /* branch.<head>.remote */
5835 if (*opt_head &&
5836 !strncmp(name, "branch.", 7) &&
5837 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5838 !strcmp(name + 7 + strlen(opt_head), ".remote"))
5839 string_ncopy(opt_remote, value, valuelen);
5841 if (*opt_head && *opt_remote &&
5842 !strncmp(name, "branch.", 7) &&
5843 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5844 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
5845 size_t from = strlen(opt_remote);
5847 if (!strncmp(value, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5848 value += STRING_SIZE("refs/heads/");
5849 valuelen -= STRING_SIZE("refs/heads/");
5850 }
5852 if (!string_format_from(opt_remote, &from, "/%s", value))
5853 opt_remote[0] = 0;
5854 }
5856 return OK;
5857 }
5859 static int
5860 load_git_config(void)
5861 {
5862 return read_properties(popen("git " GIT_CONFIG " --list", "r"),
5863 "=", read_repo_config_option);
5864 }
5866 static int
5867 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
5868 {
5869 if (!opt_git_dir[0]) {
5870 string_ncopy(opt_git_dir, name, namelen);
5872 } else if (opt_is_inside_work_tree == -1) {
5873 /* This can be 3 different values depending on the
5874 * version of git being used. If git-rev-parse does not
5875 * understand --is-inside-work-tree it will simply echo
5876 * the option else either "true" or "false" is printed.
5877 * Default to true for the unknown case. */
5878 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
5880 } else if (opt_cdup[0] == ' ') {
5881 string_ncopy(opt_cdup, name, namelen);
5882 } else {
5883 if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5884 namelen -= STRING_SIZE("refs/heads/");
5885 name += STRING_SIZE("refs/heads/");
5886 string_ncopy(opt_head, name, namelen);
5887 }
5888 }
5890 return OK;
5891 }
5893 static int
5894 load_repo_info(void)
5895 {
5896 int result;
5897 FILE *pipe = popen("(git rev-parse --git-dir --is-inside-work-tree "
5898 " --show-cdup; git symbolic-ref HEAD) 2>/dev/null", "r");
5900 /* XXX: The line outputted by "--show-cdup" can be empty so
5901 * initialize it to something invalid to make it possible to
5902 * detect whether it has been set or not. */
5903 opt_cdup[0] = ' ';
5905 result = read_properties(pipe, "=", read_repo_info);
5906 if (opt_cdup[0] == ' ')
5907 opt_cdup[0] = 0;
5909 return result;
5910 }
5912 static int
5913 read_properties(FILE *pipe, const char *separators,
5914 int (*read_property)(char *, size_t, char *, size_t))
5915 {
5916 char buffer[BUFSIZ];
5917 char *name;
5918 int state = OK;
5920 if (!pipe)
5921 return ERR;
5923 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
5924 char *value;
5925 size_t namelen;
5926 size_t valuelen;
5928 name = chomp_string(name);
5929 namelen = strcspn(name, separators);
5931 if (name[namelen]) {
5932 name[namelen] = 0;
5933 value = chomp_string(name + namelen + 1);
5934 valuelen = strlen(value);
5936 } else {
5937 value = "";
5938 valuelen = 0;
5939 }
5941 state = read_property(name, namelen, value, valuelen);
5942 }
5944 if (state != ERR && ferror(pipe))
5945 state = ERR;
5947 pclose(pipe);
5949 return state;
5950 }
5953 /*
5954 * Main
5955 */
5957 static void __NORETURN
5958 quit(int sig)
5959 {
5960 /* XXX: Restore tty modes and let the OS cleanup the rest! */
5961 if (cursed)
5962 endwin();
5963 exit(0);
5964 }
5966 static void __NORETURN
5967 die(const char *err, ...)
5968 {
5969 va_list args;
5971 endwin();
5973 va_start(args, err);
5974 fputs("tig: ", stderr);
5975 vfprintf(stderr, err, args);
5976 fputs("\n", stderr);
5977 va_end(args);
5979 exit(1);
5980 }
5982 static void
5983 warn(const char *msg, ...)
5984 {
5985 va_list args;
5987 va_start(args, msg);
5988 fputs("tig warning: ", stderr);
5989 vfprintf(stderr, msg, args);
5990 fputs("\n", stderr);
5991 va_end(args);
5992 }
5994 int
5995 main(int argc, char *argv[])
5996 {
5997 struct view *view;
5998 enum request request;
5999 size_t i;
6001 signal(SIGINT, quit);
6003 if (setlocale(LC_ALL, "")) {
6004 char *codeset = nl_langinfo(CODESET);
6006 string_ncopy(opt_codeset, codeset, strlen(codeset));
6007 }
6009 if (load_repo_info() == ERR)
6010 die("Failed to load repo info.");
6012 if (load_options() == ERR)
6013 die("Failed to load user config.");
6015 if (load_git_config() == ERR)
6016 die("Failed to load repo config.");
6018 request = parse_options(argc, argv);
6019 if (request == REQ_NONE)
6020 return 0;
6022 /* Require a git repository unless when running in pager mode. */
6023 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6024 die("Not a git repository");
6026 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6027 opt_utf8 = FALSE;
6029 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6030 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6031 if (opt_iconv == ICONV_NONE)
6032 die("Failed to initialize character set conversion");
6033 }
6035 if (load_refs() == ERR)
6036 die("Failed to load refs.");
6038 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
6039 view->cmd_env = getenv(view->cmd_env);
6041 init_display();
6043 while (view_driver(display[current_view], request)) {
6044 int key;
6045 int i;
6047 foreach_view (view, i)
6048 update_view(view);
6050 /* Refresh, accept single keystroke of input */
6051 key = wgetch(status_win);
6053 /* wgetch() with nodelay() enabled returns ERR when there's no
6054 * input. */
6055 if (key == ERR) {
6056 request = REQ_NONE;
6057 continue;
6058 }
6060 request = get_keybinding(display[current_view]->keymap, key);
6062 /* Some low-level request handling. This keeps access to
6063 * status_win restricted. */
6064 switch (request) {
6065 case REQ_PROMPT:
6066 {
6067 char *cmd = read_prompt(":");
6069 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
6070 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
6071 request = REQ_VIEW_DIFF;
6072 } else {
6073 request = REQ_VIEW_PAGER;
6074 }
6076 /* Always reload^Wrerun commands from the prompt. */
6077 open_view(view, request, OPEN_RELOAD);
6078 }
6080 request = REQ_NONE;
6081 break;
6082 }
6083 case REQ_SEARCH:
6084 case REQ_SEARCH_BACK:
6085 {
6086 const char *prompt = request == REQ_SEARCH
6087 ? "/" : "?";
6088 char *search = read_prompt(prompt);
6090 if (search)
6091 string_ncopy(opt_search, search, strlen(search));
6092 else
6093 request = REQ_NONE;
6094 break;
6095 }
6096 case REQ_SCREEN_RESIZE:
6097 {
6098 int height, width;
6100 getmaxyx(stdscr, height, width);
6102 /* Resize the status view and let the view driver take
6103 * care of resizing the displayed views. */
6104 wresize(status_win, 1, width);
6105 mvwin(status_win, height - 1, 0);
6106 wrefresh(status_win);
6107 break;
6108 }
6109 default:
6110 break;
6111 }
6112 }
6114 quit(0);
6116 return 0;
6117 }