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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("View specific requests") \
353 REQ_(STATUS_UPDATE, "Update file status"), \
354 REQ_(STATUS_CHECKOUT, "Checkout file"), \
355 REQ_(STATUS_MERGE, "Merge file using external tool"), \
356 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
357 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
358 \
359 REQ_GROUP("Cursor navigation") \
360 REQ_(MOVE_UP, "Move cursor one line up"), \
361 REQ_(MOVE_DOWN, "Move cursor one line down"), \
362 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
363 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
364 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
365 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
366 \
367 REQ_GROUP("Scrolling") \
368 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
369 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
370 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
371 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
372 \
373 REQ_GROUP("Searching") \
374 REQ_(SEARCH, "Search the view"), \
375 REQ_(SEARCH_BACK, "Search backwards in the view"), \
376 REQ_(FIND_NEXT, "Find next search match"), \
377 REQ_(FIND_PREV, "Find previous search match"), \
378 \
379 REQ_GROUP("Option manipulation") \
380 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
381 REQ_(TOGGLE_DATE, "Toggle date display"), \
382 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
383 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
384 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
385 \
386 REQ_GROUP("Misc") \
387 REQ_(PROMPT, "Bring up the prompt"), \
388 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
389 REQ_(SCREEN_RESIZE, "Resize the screen"), \
390 REQ_(SHOW_VERSION, "Show version information"), \
391 REQ_(STOP_LOADING, "Stop all loading views"), \
392 REQ_(EDIT, "Open in editor"), \
393 REQ_(NONE, "Do nothing")
396 /* User action requests. */
397 enum request {
398 #define REQ_GROUP(help)
399 #define REQ_(req, help) REQ_##req
401 /* Offset all requests to avoid conflicts with ncurses getch values. */
402 REQ_OFFSET = KEY_MAX + 1,
403 REQ_INFO
405 #undef REQ_GROUP
406 #undef REQ_
407 };
409 struct request_info {
410 enum request request;
411 char *name;
412 int namelen;
413 char *help;
414 };
416 static struct request_info req_info[] = {
417 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
418 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
419 REQ_INFO
420 #undef REQ_GROUP
421 #undef REQ_
422 };
424 static enum request
425 get_request(const char *name)
426 {
427 int namelen = strlen(name);
428 int i;
430 for (i = 0; i < ARRAY_SIZE(req_info); i++)
431 if (req_info[i].namelen == namelen &&
432 !string_enum_compare(req_info[i].name, name, namelen))
433 return req_info[i].request;
435 return REQ_NONE;
436 }
439 /*
440 * Options
441 */
443 static const char usage[] =
444 "tig " TIG_VERSION " (" __DATE__ ")\n"
445 "\n"
446 "Usage: tig [options] [revs] [--] [paths]\n"
447 " or: tig show [options] [revs] [--] [paths]\n"
448 " or: tig blame [rev] path\n"
449 " or: tig status\n"
450 " or: tig < [git command output]\n"
451 "\n"
452 "Options:\n"
453 " -v, --version Show version and exit\n"
454 " -h, --help Show help message and exit";
456 /* Option and state variables. */
457 static bool opt_date = TRUE;
458 static bool opt_author = TRUE;
459 static bool opt_line_number = FALSE;
460 static bool opt_line_graphics = TRUE;
461 static bool opt_rev_graph = FALSE;
462 static bool opt_show_refs = TRUE;
463 static int opt_num_interval = NUMBER_INTERVAL;
464 static int opt_tab_size = TAB_SIZE;
465 static int opt_author_cols = AUTHOR_COLS-1;
466 static char opt_cmd[SIZEOF_STR] = "";
467 static char opt_path[SIZEOF_STR] = "";
468 static char opt_file[SIZEOF_STR] = "";
469 static char opt_ref[SIZEOF_REF] = "";
470 static char opt_head[SIZEOF_REF] = "";
471 static char opt_remote[SIZEOF_REF] = "";
472 static bool opt_no_head = TRUE;
473 static FILE *opt_pipe = NULL;
474 static char opt_encoding[20] = "UTF-8";
475 static bool opt_utf8 = TRUE;
476 static char opt_codeset[20] = "UTF-8";
477 static iconv_t opt_iconv = ICONV_NONE;
478 static char opt_search[SIZEOF_STR] = "";
479 static char opt_cdup[SIZEOF_STR] = "";
480 static char opt_git_dir[SIZEOF_STR] = "";
481 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
482 static char opt_editor[SIZEOF_STR] = "";
484 static enum request
485 parse_options(int argc, char *argv[])
486 {
487 enum request request = REQ_VIEW_MAIN;
488 size_t buf_size;
489 char *subcommand;
490 bool seen_dashdash = FALSE;
491 int i;
493 if (!isatty(STDIN_FILENO)) {
494 opt_pipe = stdin;
495 return REQ_VIEW_PAGER;
496 }
498 if (argc <= 1)
499 return REQ_VIEW_MAIN;
501 subcommand = argv[1];
502 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
503 if (!strcmp(subcommand, "-S"))
504 warn("`-S' has been deprecated; use `tig status' instead");
505 if (argc > 2)
506 warn("ignoring arguments after `%s'", subcommand);
507 return REQ_VIEW_STATUS;
509 } else if (!strcmp(subcommand, "blame")) {
510 if (argc <= 2 || argc > 4)
511 die("invalid number of options to blame\n\n%s", usage);
513 i = 2;
514 if (argc == 4) {
515 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
516 i++;
517 }
519 string_ncopy(opt_file, argv[i], strlen(argv[i]));
520 return REQ_VIEW_BLAME;
522 } else if (!strcmp(subcommand, "show")) {
523 request = REQ_VIEW_DIFF;
525 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
526 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
527 warn("`tig %s' has been deprecated", subcommand);
529 } else {
530 subcommand = NULL;
531 }
533 if (!subcommand)
534 /* XXX: This is vulnerable to the user overriding
535 * options required for the main view parser. */
536 string_copy(opt_cmd, TIG_MAIN_BASE);
537 else
538 string_format(opt_cmd, "git %s", subcommand);
540 buf_size = strlen(opt_cmd);
542 for (i = 1 + !!subcommand; i < argc; i++) {
543 char *opt = argv[i];
545 if (seen_dashdash || !strcmp(opt, "--")) {
546 seen_dashdash = TRUE;
548 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
549 printf("tig version %s\n", TIG_VERSION);
550 return REQ_NONE;
552 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
553 printf("%s\n", usage);
554 return REQ_NONE;
555 }
557 opt_cmd[buf_size++] = ' ';
558 buf_size = sq_quote(opt_cmd, buf_size, opt);
559 if (buf_size >= sizeof(opt_cmd))
560 die("command too long");
561 }
563 opt_cmd[buf_size] = 0;
565 return request;
566 }
569 /*
570 * Line-oriented content detection.
571 */
573 #define LINE_INFO \
574 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
575 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
576 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
577 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
578 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
579 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
580 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
581 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
582 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
583 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
584 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
585 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
586 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
587 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
588 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
589 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
590 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
591 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
592 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
593 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
594 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
595 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
596 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
597 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
598 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
599 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
600 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
601 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
602 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
603 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
604 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
605 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
606 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
607 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
608 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
609 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
610 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
611 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
612 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
613 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
614 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
615 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
616 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
617 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
618 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
619 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
620 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
621 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
622 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
623 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
624 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
625 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
626 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
627 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
629 enum line_type {
630 #define LINE(type, line, fg, bg, attr) \
631 LINE_##type
632 LINE_INFO,
633 LINE_NONE
634 #undef LINE
635 };
637 struct line_info {
638 const char *name; /* Option name. */
639 int namelen; /* Size of option name. */
640 const char *line; /* The start of line to match. */
641 int linelen; /* Size of string to match. */
642 int fg, bg, attr; /* Color and text attributes for the lines. */
643 };
645 static struct line_info line_info[] = {
646 #define LINE(type, line, fg, bg, attr) \
647 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
648 LINE_INFO
649 #undef LINE
650 };
652 static enum line_type
653 get_line_type(const char *line)
654 {
655 int linelen = strlen(line);
656 enum line_type type;
658 for (type = 0; type < ARRAY_SIZE(line_info); type++)
659 /* Case insensitive search matches Signed-off-by lines better. */
660 if (linelen >= line_info[type].linelen &&
661 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
662 return type;
664 return LINE_DEFAULT;
665 }
667 static inline int
668 get_line_attr(enum line_type type)
669 {
670 assert(type < ARRAY_SIZE(line_info));
671 return COLOR_PAIR(type) | line_info[type].attr;
672 }
674 static struct line_info *
675 get_line_info(const char *name)
676 {
677 size_t namelen = strlen(name);
678 enum line_type type;
680 for (type = 0; type < ARRAY_SIZE(line_info); type++)
681 if (namelen == line_info[type].namelen &&
682 !string_enum_compare(line_info[type].name, name, namelen))
683 return &line_info[type];
685 return NULL;
686 }
688 static void
689 init_colors(void)
690 {
691 int default_bg = line_info[LINE_DEFAULT].bg;
692 int default_fg = line_info[LINE_DEFAULT].fg;
693 enum line_type type;
695 start_color();
697 if (assume_default_colors(default_fg, default_bg) == ERR) {
698 default_bg = COLOR_BLACK;
699 default_fg = COLOR_WHITE;
700 }
702 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
703 struct line_info *info = &line_info[type];
704 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
705 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
707 init_pair(type, fg, bg);
708 }
709 }
711 struct line {
712 enum line_type type;
714 /* State flags */
715 unsigned int selected:1;
716 unsigned int dirty:1;
718 void *data; /* User data */
719 };
722 /*
723 * Keys
724 */
726 struct keybinding {
727 int alias;
728 enum request request;
729 struct keybinding *next;
730 };
732 static struct keybinding default_keybindings[] = {
733 /* View switching */
734 { 'm', REQ_VIEW_MAIN },
735 { 'd', REQ_VIEW_DIFF },
736 { 'l', REQ_VIEW_LOG },
737 { 't', REQ_VIEW_TREE },
738 { 'f', REQ_VIEW_BLOB },
739 { 'B', REQ_VIEW_BLAME },
740 { 'p', REQ_VIEW_PAGER },
741 { 'h', REQ_VIEW_HELP },
742 { 'S', REQ_VIEW_STATUS },
743 { 'c', REQ_VIEW_STAGE },
745 /* View manipulation */
746 { 'q', REQ_VIEW_CLOSE },
747 { KEY_TAB, REQ_VIEW_NEXT },
748 { KEY_RETURN, REQ_ENTER },
749 { KEY_UP, REQ_PREVIOUS },
750 { KEY_DOWN, REQ_NEXT },
751 { 'R', REQ_REFRESH },
752 { KEY_F(5), REQ_REFRESH },
753 { 'O', REQ_MAXIMIZE },
755 /* Cursor navigation */
756 { 'k', REQ_MOVE_UP },
757 { 'j', REQ_MOVE_DOWN },
758 { KEY_HOME, REQ_MOVE_FIRST_LINE },
759 { KEY_END, REQ_MOVE_LAST_LINE },
760 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
761 { ' ', REQ_MOVE_PAGE_DOWN },
762 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
763 { 'b', REQ_MOVE_PAGE_UP },
764 { '-', REQ_MOVE_PAGE_UP },
766 /* Scrolling */
767 { KEY_IC, REQ_SCROLL_LINE_UP },
768 { KEY_DC, REQ_SCROLL_LINE_DOWN },
769 { 'w', REQ_SCROLL_PAGE_UP },
770 { 's', REQ_SCROLL_PAGE_DOWN },
772 /* Searching */
773 { '/', REQ_SEARCH },
774 { '?', REQ_SEARCH_BACK },
775 { 'n', REQ_FIND_NEXT },
776 { 'N', REQ_FIND_PREV },
778 /* Misc */
779 { 'Q', REQ_QUIT },
780 { 'z', REQ_STOP_LOADING },
781 { 'v', REQ_SHOW_VERSION },
782 { 'r', REQ_SCREEN_REDRAW },
783 { '.', REQ_TOGGLE_LINENO },
784 { 'D', REQ_TOGGLE_DATE },
785 { 'A', REQ_TOGGLE_AUTHOR },
786 { 'g', REQ_TOGGLE_REV_GRAPH },
787 { 'F', REQ_TOGGLE_REFS },
788 { ':', REQ_PROMPT },
789 { 'u', REQ_STATUS_UPDATE },
790 { '!', REQ_STATUS_CHECKOUT },
791 { 'M', REQ_STATUS_MERGE },
792 { '@', REQ_STAGE_NEXT },
793 { ',', REQ_TREE_PARENT },
794 { 'e', REQ_EDIT },
796 /* Using the ncurses SIGWINCH handler. */
797 { KEY_RESIZE, REQ_SCREEN_RESIZE },
798 };
800 #define KEYMAP_INFO \
801 KEYMAP_(GENERIC), \
802 KEYMAP_(MAIN), \
803 KEYMAP_(DIFF), \
804 KEYMAP_(LOG), \
805 KEYMAP_(TREE), \
806 KEYMAP_(BLOB), \
807 KEYMAP_(BLAME), \
808 KEYMAP_(PAGER), \
809 KEYMAP_(HELP), \
810 KEYMAP_(STATUS), \
811 KEYMAP_(STAGE)
813 enum keymap {
814 #define KEYMAP_(name) KEYMAP_##name
815 KEYMAP_INFO
816 #undef KEYMAP_
817 };
819 static struct int_map keymap_table[] = {
820 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
821 KEYMAP_INFO
822 #undef KEYMAP_
823 };
825 #define set_keymap(map, name) \
826 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
828 static struct keybinding *keybindings[ARRAY_SIZE(keymap_table)];
830 static void
831 add_keybinding(enum keymap keymap, enum request request, int key)
832 {
833 struct keybinding *keybinding;
835 keybinding = calloc(1, sizeof(*keybinding));
836 if (!keybinding)
837 die("Failed to allocate keybinding");
839 keybinding->alias = key;
840 keybinding->request = request;
841 keybinding->next = keybindings[keymap];
842 keybindings[keymap] = keybinding;
843 }
845 /* Looks for a key binding first in the given map, then in the generic map, and
846 * lastly in the default keybindings. */
847 static enum request
848 get_keybinding(enum keymap keymap, int key)
849 {
850 struct keybinding *kbd;
851 int i;
853 for (kbd = keybindings[keymap]; kbd; kbd = kbd->next)
854 if (kbd->alias == key)
855 return kbd->request;
857 for (kbd = keybindings[KEYMAP_GENERIC]; kbd; kbd = kbd->next)
858 if (kbd->alias == key)
859 return kbd->request;
861 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
862 if (default_keybindings[i].alias == key)
863 return default_keybindings[i].request;
865 return (enum request) key;
866 }
869 struct key {
870 char *name;
871 int value;
872 };
874 static struct key key_table[] = {
875 { "Enter", KEY_RETURN },
876 { "Space", ' ' },
877 { "Backspace", KEY_BACKSPACE },
878 { "Tab", KEY_TAB },
879 { "Escape", KEY_ESC },
880 { "Left", KEY_LEFT },
881 { "Right", KEY_RIGHT },
882 { "Up", KEY_UP },
883 { "Down", KEY_DOWN },
884 { "Insert", KEY_IC },
885 { "Delete", KEY_DC },
886 { "Hash", '#' },
887 { "Home", KEY_HOME },
888 { "End", KEY_END },
889 { "PageUp", KEY_PPAGE },
890 { "PageDown", KEY_NPAGE },
891 { "F1", KEY_F(1) },
892 { "F2", KEY_F(2) },
893 { "F3", KEY_F(3) },
894 { "F4", KEY_F(4) },
895 { "F5", KEY_F(5) },
896 { "F6", KEY_F(6) },
897 { "F7", KEY_F(7) },
898 { "F8", KEY_F(8) },
899 { "F9", KEY_F(9) },
900 { "F10", KEY_F(10) },
901 { "F11", KEY_F(11) },
902 { "F12", KEY_F(12) },
903 };
905 static int
906 get_key_value(const char *name)
907 {
908 int i;
910 for (i = 0; i < ARRAY_SIZE(key_table); i++)
911 if (!strcasecmp(key_table[i].name, name))
912 return key_table[i].value;
914 if (strlen(name) == 1 && isprint(*name))
915 return (int) *name;
917 return ERR;
918 }
920 static char *
921 get_key_name(int key_value)
922 {
923 static char key_char[] = "'X'";
924 char *seq = NULL;
925 int key;
927 for (key = 0; key < ARRAY_SIZE(key_table); key++)
928 if (key_table[key].value == key_value)
929 seq = key_table[key].name;
931 if (seq == NULL &&
932 key_value < 127 &&
933 isprint(key_value)) {
934 key_char[1] = (char) key_value;
935 seq = key_char;
936 }
938 return seq ? seq : "(no key)";
939 }
941 static char *
942 get_key(enum request request)
943 {
944 static char buf[BUFSIZ];
945 size_t pos = 0;
946 char *sep = "";
947 int i;
949 buf[pos] = 0;
951 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
952 struct keybinding *keybinding = &default_keybindings[i];
954 if (keybinding->request != request)
955 continue;
957 if (!string_format_from(buf, &pos, "%s%s", sep,
958 get_key_name(keybinding->alias)))
959 return "Too many keybindings!";
960 sep = ", ";
961 }
963 return buf;
964 }
966 struct run_request {
967 enum keymap keymap;
968 int key;
969 char cmd[SIZEOF_STR];
970 };
972 static struct run_request *run_request;
973 static size_t run_requests;
975 static enum request
976 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
977 {
978 struct run_request *req;
979 char cmd[SIZEOF_STR];
980 size_t bufpos;
982 for (bufpos = 0; argc > 0; argc--, argv++)
983 if (!string_format_from(cmd, &bufpos, "%s ", *argv))
984 return REQ_NONE;
986 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
987 if (!req)
988 return REQ_NONE;
990 run_request = req;
991 req = &run_request[run_requests++];
992 string_copy(req->cmd, cmd);
993 req->keymap = keymap;
994 req->key = key;
996 return REQ_NONE + run_requests;
997 }
999 static struct run_request *
1000 get_run_request(enum request request)
1001 {
1002 if (request <= REQ_NONE)
1003 return NULL;
1004 return &run_request[request - REQ_NONE - 1];
1005 }
1007 static void
1008 add_builtin_run_requests(void)
1009 {
1010 struct {
1011 enum keymap keymap;
1012 int key;
1013 const char *argv[1];
1014 } reqs[] = {
1015 { KEYMAP_MAIN, 'C', { "git cherry-pick %(commit)" } },
1016 { KEYMAP_GENERIC, 'G', { "git gc" } },
1017 };
1018 int i;
1020 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1021 enum request req;
1023 req = add_run_request(reqs[i].keymap, reqs[i].key, 1, reqs[i].argv);
1024 if (req != REQ_NONE)
1025 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1026 }
1027 }
1029 /*
1030 * User config file handling.
1031 */
1033 static struct int_map color_map[] = {
1034 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1035 COLOR_MAP(DEFAULT),
1036 COLOR_MAP(BLACK),
1037 COLOR_MAP(BLUE),
1038 COLOR_MAP(CYAN),
1039 COLOR_MAP(GREEN),
1040 COLOR_MAP(MAGENTA),
1041 COLOR_MAP(RED),
1042 COLOR_MAP(WHITE),
1043 COLOR_MAP(YELLOW),
1044 };
1046 #define set_color(color, name) \
1047 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1049 static struct int_map attr_map[] = {
1050 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1051 ATTR_MAP(NORMAL),
1052 ATTR_MAP(BLINK),
1053 ATTR_MAP(BOLD),
1054 ATTR_MAP(DIM),
1055 ATTR_MAP(REVERSE),
1056 ATTR_MAP(STANDOUT),
1057 ATTR_MAP(UNDERLINE),
1058 };
1060 #define set_attribute(attr, name) \
1061 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1063 static int config_lineno;
1064 static bool config_errors;
1065 static char *config_msg;
1067 /* Wants: object fgcolor bgcolor [attr] */
1068 static int
1069 option_color_command(int argc, const char *argv[])
1070 {
1071 struct line_info *info;
1073 if (argc != 3 && argc != 4) {
1074 config_msg = "Wrong number of arguments given to color command";
1075 return ERR;
1076 }
1078 info = get_line_info(argv[0]);
1079 if (!info) {
1080 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1081 info = get_line_info("delimiter");
1083 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1084 info = get_line_info("date");
1086 } else {
1087 config_msg = "Unknown color name";
1088 return ERR;
1089 }
1090 }
1092 if (set_color(&info->fg, argv[1]) == ERR ||
1093 set_color(&info->bg, argv[2]) == ERR) {
1094 config_msg = "Unknown color";
1095 return ERR;
1096 }
1098 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1099 config_msg = "Unknown attribute";
1100 return ERR;
1101 }
1103 return OK;
1104 }
1106 static bool parse_bool(const char *s)
1107 {
1108 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1109 !strcmp(s, "yes")) ? TRUE : FALSE;
1110 }
1112 static int
1113 parse_int(const char *s, int default_value, int min, int max)
1114 {
1115 int value = atoi(s);
1117 return (value < min || value > max) ? default_value : value;
1118 }
1120 /* Wants: name = value */
1121 static int
1122 option_set_command(int argc, const char *argv[])
1123 {
1124 if (argc != 3) {
1125 config_msg = "Wrong number of arguments given to set command";
1126 return ERR;
1127 }
1129 if (strcmp(argv[1], "=")) {
1130 config_msg = "No value assigned";
1131 return ERR;
1132 }
1134 if (!strcmp(argv[0], "show-author")) {
1135 opt_author = parse_bool(argv[2]);
1136 return OK;
1137 }
1139 if (!strcmp(argv[0], "show-date")) {
1140 opt_date = parse_bool(argv[2]);
1141 return OK;
1142 }
1144 if (!strcmp(argv[0], "show-rev-graph")) {
1145 opt_rev_graph = parse_bool(argv[2]);
1146 return OK;
1147 }
1149 if (!strcmp(argv[0], "show-refs")) {
1150 opt_show_refs = parse_bool(argv[2]);
1151 return OK;
1152 }
1154 if (!strcmp(argv[0], "show-line-numbers")) {
1155 opt_line_number = parse_bool(argv[2]);
1156 return OK;
1157 }
1159 if (!strcmp(argv[0], "line-graphics")) {
1160 opt_line_graphics = parse_bool(argv[2]);
1161 return OK;
1162 }
1164 if (!strcmp(argv[0], "line-number-interval")) {
1165 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1166 return OK;
1167 }
1169 if (!strcmp(argv[0], "author-width")) {
1170 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1171 return OK;
1172 }
1174 if (!strcmp(argv[0], "tab-size")) {
1175 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1176 return OK;
1177 }
1179 if (!strcmp(argv[0], "commit-encoding")) {
1180 const char *arg = argv[2];
1181 int arglen = strlen(arg);
1183 switch (arg[0]) {
1184 case '"':
1185 case '\'':
1186 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1187 config_msg = "Unmatched quotation";
1188 return ERR;
1189 }
1190 arg += 1; arglen -= 2;
1191 default:
1192 string_ncopy(opt_encoding, arg, strlen(arg));
1193 return OK;
1194 }
1195 }
1197 config_msg = "Unknown variable name";
1198 return ERR;
1199 }
1201 /* Wants: mode request key */
1202 static int
1203 option_bind_command(int argc, const char *argv[])
1204 {
1205 enum request request;
1206 int keymap;
1207 int key;
1209 if (argc < 3) {
1210 config_msg = "Wrong number of arguments given to bind command";
1211 return ERR;
1212 }
1214 if (set_keymap(&keymap, argv[0]) == ERR) {
1215 config_msg = "Unknown key map";
1216 return ERR;
1217 }
1219 key = get_key_value(argv[1]);
1220 if (key == ERR) {
1221 config_msg = "Unknown key";
1222 return ERR;
1223 }
1225 request = get_request(argv[2]);
1226 if (request == REQ_NONE) {
1227 const char *obsolete[] = { "cherry-pick" };
1228 size_t namelen = strlen(argv[2]);
1229 int i;
1231 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1232 if (namelen == strlen(obsolete[i]) &&
1233 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1234 config_msg = "Obsolete request name";
1235 return ERR;
1236 }
1237 }
1238 }
1239 if (request == REQ_NONE && *argv[2]++ == '!')
1240 request = add_run_request(keymap, key, argc - 2, argv + 2);
1241 if (request == REQ_NONE) {
1242 config_msg = "Unknown request name";
1243 return ERR;
1244 }
1246 add_keybinding(keymap, request, key);
1248 return OK;
1249 }
1251 static int
1252 set_option(char *opt, char *value)
1253 {
1254 const char *argv[SIZEOF_ARG];
1255 int valuelen;
1256 int argc = 0;
1258 /* Tokenize */
1259 while (argc < ARRAY_SIZE(argv) && (valuelen = strcspn(value, " \t"))) {
1260 argv[argc++] = value;
1261 value += valuelen;
1263 /* Nothing more to tokenize or last available token. */
1264 if (!*value || argc >= ARRAY_SIZE(argv))
1265 break;
1267 *value++ = 0;
1268 while (isspace(*value))
1269 value++;
1270 }
1272 if (!strcmp(opt, "color"))
1273 return option_color_command(argc, argv);
1275 if (!strcmp(opt, "set"))
1276 return option_set_command(argc, argv);
1278 if (!strcmp(opt, "bind"))
1279 return option_bind_command(argc, argv);
1281 config_msg = "Unknown option command";
1282 return ERR;
1283 }
1285 static int
1286 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1287 {
1288 int status = OK;
1290 config_lineno++;
1291 config_msg = "Internal error";
1293 /* Check for comment markers, since read_properties() will
1294 * only ensure opt and value are split at first " \t". */
1295 optlen = strcspn(opt, "#");
1296 if (optlen == 0)
1297 return OK;
1299 if (opt[optlen] != 0) {
1300 config_msg = "No option value";
1301 status = ERR;
1303 } else {
1304 /* Look for comment endings in the value. */
1305 size_t len = strcspn(value, "#");
1307 if (len < valuelen) {
1308 valuelen = len;
1309 value[valuelen] = 0;
1310 }
1312 status = set_option(opt, value);
1313 }
1315 if (status == ERR) {
1316 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1317 config_lineno, (int) optlen, opt, config_msg);
1318 config_errors = TRUE;
1319 }
1321 /* Always keep going if errors are encountered. */
1322 return OK;
1323 }
1325 static void
1326 load_option_file(const char *path)
1327 {
1328 FILE *file;
1330 /* It's ok that the file doesn't exist. */
1331 file = fopen(path, "r");
1332 if (!file)
1333 return;
1335 config_lineno = 0;
1336 config_errors = FALSE;
1338 if (read_properties(file, " \t", read_option) == ERR ||
1339 config_errors == TRUE)
1340 fprintf(stderr, "Errors while loading %s.\n", path);
1341 }
1343 static int
1344 load_options(void)
1345 {
1346 char *home = getenv("HOME");
1347 char *tigrc_user = getenv("TIGRC_USER");
1348 char *tigrc_system = getenv("TIGRC_SYSTEM");
1349 char buf[SIZEOF_STR];
1351 add_builtin_run_requests();
1353 if (!tigrc_system) {
1354 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1355 return ERR;
1356 tigrc_system = buf;
1357 }
1358 load_option_file(tigrc_system);
1360 if (!tigrc_user) {
1361 if (!home || !string_format(buf, "%s/.tigrc", home))
1362 return ERR;
1363 tigrc_user = buf;
1364 }
1365 load_option_file(tigrc_user);
1367 return OK;
1368 }
1371 /*
1372 * The viewer
1373 */
1375 struct view;
1376 struct view_ops;
1378 /* The display array of active views and the index of the current view. */
1379 static struct view *display[2];
1380 static unsigned int current_view;
1382 /* Reading from the prompt? */
1383 static bool input_mode = FALSE;
1385 #define foreach_displayed_view(view, i) \
1386 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1388 #define displayed_views() (display[1] != NULL ? 2 : 1)
1390 /* Current head and commit ID */
1391 static char ref_blob[SIZEOF_REF] = "";
1392 static char ref_commit[SIZEOF_REF] = "HEAD";
1393 static char ref_head[SIZEOF_REF] = "HEAD";
1395 struct view {
1396 const char *name; /* View name */
1397 const char *cmd_fmt; /* Default command line format */
1398 const char *cmd_env; /* Command line set via environment */
1399 const char *id; /* Points to either of ref_{head,commit,blob} */
1401 struct view_ops *ops; /* View operations */
1403 enum keymap keymap; /* What keymap does this view have */
1404 bool git_dir; /* Whether the view requires a git directory. */
1406 char cmd[SIZEOF_STR]; /* Command buffer */
1407 char ref[SIZEOF_REF]; /* Hovered commit reference */
1408 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1410 int height, width; /* The width and height of the main window */
1411 WINDOW *win; /* The main window */
1412 WINDOW *title; /* The title window living below the main window */
1414 /* Navigation */
1415 unsigned long offset; /* Offset of the window top */
1416 unsigned long lineno; /* Current line number */
1418 /* Searching */
1419 char grep[SIZEOF_STR]; /* Search string */
1420 regex_t *regex; /* Pre-compiled regex */
1422 /* If non-NULL, points to the view that opened this view. If this view
1423 * is closed tig will switch back to the parent view. */
1424 struct view *parent;
1426 /* Buffering */
1427 size_t lines; /* Total number of lines */
1428 struct line *line; /* Line index */
1429 size_t line_alloc; /* Total number of allocated lines */
1430 size_t line_size; /* Total number of used lines */
1431 unsigned int digits; /* Number of digits in the lines member. */
1433 /* Drawing */
1434 struct line *curline; /* Line currently being drawn. */
1435 enum line_type curtype; /* Attribute currently used for drawing. */
1436 unsigned long col; /* Column when drawing. */
1438 /* Loading */
1439 FILE *pipe;
1440 time_t start_time;
1441 };
1443 struct view_ops {
1444 /* What type of content being displayed. Used in the title bar. */
1445 const char *type;
1446 /* Open and reads in all view content. */
1447 bool (*open)(struct view *view);
1448 /* Read one line; updates view->line. */
1449 bool (*read)(struct view *view, char *data);
1450 /* Draw one line; @lineno must be < view->height. */
1451 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1452 /* Depending on view handle a special requests. */
1453 enum request (*request)(struct view *view, enum request request, struct line *line);
1454 /* Search for regex in a line. */
1455 bool (*grep)(struct view *view, struct line *line);
1456 /* Select line */
1457 void (*select)(struct view *view, struct line *line);
1458 };
1460 static struct view_ops blame_ops;
1461 static struct view_ops blob_ops;
1462 static struct view_ops help_ops;
1463 static struct view_ops log_ops;
1464 static struct view_ops main_ops;
1465 static struct view_ops pager_ops;
1466 static struct view_ops stage_ops;
1467 static struct view_ops status_ops;
1468 static struct view_ops tree_ops;
1470 #define VIEW_STR(name, cmd, env, ref, ops, map, git) \
1471 { name, cmd, #env, ref, ops, map, git }
1473 #define VIEW_(id, name, ops, git, ref) \
1474 VIEW_STR(name, TIG_##id##_CMD, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1477 static struct view views[] = {
1478 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1479 VIEW_(DIFF, "diff", &pager_ops, TRUE, ref_commit),
1480 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1481 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1482 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1483 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1484 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1485 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1486 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1487 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1488 };
1490 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1491 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1493 #define foreach_view(view, i) \
1494 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1496 #define view_is_displayed(view) \
1497 (view == display[0] || view == display[1])
1500 enum line_graphic {
1501 LINE_GRAPHIC_VLINE
1502 };
1504 static int line_graphics[] = {
1505 /* LINE_GRAPHIC_VLINE: */ '|'
1506 };
1508 static inline void
1509 set_view_attr(struct view *view, enum line_type type)
1510 {
1511 if (!view->curline->selected && view->curtype != type) {
1512 wattrset(view->win, get_line_attr(type));
1513 wchgat(view->win, -1, 0, type, NULL);
1514 view->curtype = type;
1515 }
1516 }
1518 static int
1519 draw_chars(struct view *view, enum line_type type, const char *string,
1520 int max_len, bool use_tilde)
1521 {
1522 int len = 0;
1523 int col = 0;
1524 int trimmed = FALSE;
1526 if (max_len <= 0)
1527 return 0;
1529 if (opt_utf8) {
1530 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1531 } else {
1532 col = len = strlen(string);
1533 if (len > max_len) {
1534 if (use_tilde) {
1535 max_len -= 1;
1536 }
1537 col = len = max_len;
1538 trimmed = TRUE;
1539 }
1540 }
1542 set_view_attr(view, type);
1543 waddnstr(view->win, string, len);
1544 if (trimmed && use_tilde) {
1545 set_view_attr(view, LINE_DELIMITER);
1546 waddch(view->win, '~');
1547 col++;
1548 }
1550 return col;
1551 }
1553 static int
1554 draw_space(struct view *view, enum line_type type, int max, int spaces)
1555 {
1556 static char space[] = " ";
1557 int col = 0;
1559 spaces = MIN(max, spaces);
1561 while (spaces > 0) {
1562 int len = MIN(spaces, sizeof(space) - 1);
1564 col += draw_chars(view, type, space, spaces, FALSE);
1565 spaces -= len;
1566 }
1568 return col;
1569 }
1571 static bool
1572 draw_lineno(struct view *view, unsigned int lineno)
1573 {
1574 char number[10];
1575 int digits3 = view->digits < 3 ? 3 : view->digits;
1576 int max_number = MIN(digits3, STRING_SIZE(number));
1577 int max = view->width - view->col;
1578 int col;
1580 if (max < max_number)
1581 max_number = max;
1583 lineno += view->offset + 1;
1584 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1585 static char fmt[] = "%1ld";
1587 if (view->digits <= 9)
1588 fmt[1] = '0' + digits3;
1590 if (!string_format(number, fmt, lineno))
1591 number[0] = 0;
1592 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1593 } else {
1594 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1595 }
1597 if (col < max) {
1598 set_view_attr(view, LINE_DEFAULT);
1599 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1600 col++;
1601 }
1603 if (col < max)
1604 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1605 view->col += col;
1607 return view->width - view->col <= 0;
1608 }
1610 static bool
1611 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1612 {
1613 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1614 return view->width - view->col <= 0;
1615 }
1617 static bool
1618 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1619 {
1620 int max = view->width - view->col;
1621 int i;
1623 if (max < size)
1624 size = max;
1626 set_view_attr(view, type);
1627 /* Using waddch() instead of waddnstr() ensures that
1628 * they'll be rendered correctly for the cursor line. */
1629 for (i = 0; i < size; i++)
1630 waddch(view->win, graphic[i]);
1632 view->col += size;
1633 if (size < max) {
1634 waddch(view->win, ' ');
1635 view->col++;
1636 }
1638 return view->width - view->col <= 0;
1639 }
1641 static bool
1642 draw_field(struct view *view, enum line_type type, char *text, int len, bool trim)
1643 {
1644 int max = MIN(view->width - view->col, len);
1645 int col;
1647 if (text)
1648 col = draw_chars(view, type, text, max - 1, trim);
1649 else
1650 col = draw_space(view, type, max - 1, max - 1);
1652 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1653 return view->width - view->col <= 0;
1654 }
1656 static bool
1657 draw_date(struct view *view, struct tm *time)
1658 {
1659 char buf[DATE_COLS];
1660 char *date;
1661 int timelen = 0;
1663 if (time)
1664 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1665 date = timelen ? buf : NULL;
1667 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1668 }
1670 static bool
1671 draw_view_line(struct view *view, unsigned int lineno)
1672 {
1673 struct line *line;
1674 bool selected = (view->offset + lineno == view->lineno);
1675 bool draw_ok;
1677 assert(view_is_displayed(view));
1679 if (view->offset + lineno >= view->lines)
1680 return FALSE;
1682 line = &view->line[view->offset + lineno];
1684 wmove(view->win, lineno, 0);
1685 view->col = 0;
1686 view->curline = line;
1687 view->curtype = LINE_NONE;
1688 line->selected = FALSE;
1690 if (selected) {
1691 set_view_attr(view, LINE_CURSOR);
1692 line->selected = TRUE;
1693 view->ops->select(view, line);
1694 } else if (line->selected) {
1695 wclrtoeol(view->win);
1696 }
1698 scrollok(view->win, FALSE);
1699 draw_ok = view->ops->draw(view, line, lineno);
1700 scrollok(view->win, TRUE);
1702 return draw_ok;
1703 }
1705 static void
1706 redraw_view_dirty(struct view *view)
1707 {
1708 bool dirty = FALSE;
1709 int lineno;
1711 for (lineno = 0; lineno < view->height; lineno++) {
1712 struct line *line = &view->line[view->offset + lineno];
1714 if (!line->dirty)
1715 continue;
1716 line->dirty = 0;
1717 dirty = TRUE;
1718 if (!draw_view_line(view, lineno))
1719 break;
1720 }
1722 if (!dirty)
1723 return;
1724 redrawwin(view->win);
1725 if (input_mode)
1726 wnoutrefresh(view->win);
1727 else
1728 wrefresh(view->win);
1729 }
1731 static void
1732 redraw_view_from(struct view *view, int lineno)
1733 {
1734 assert(0 <= lineno && lineno < view->height);
1736 for (; lineno < view->height; lineno++) {
1737 if (!draw_view_line(view, lineno))
1738 break;
1739 }
1741 redrawwin(view->win);
1742 if (input_mode)
1743 wnoutrefresh(view->win);
1744 else
1745 wrefresh(view->win);
1746 }
1748 static void
1749 redraw_view(struct view *view)
1750 {
1751 wclear(view->win);
1752 redraw_view_from(view, 0);
1753 }
1756 static void
1757 update_view_title(struct view *view)
1758 {
1759 char buf[SIZEOF_STR];
1760 char state[SIZEOF_STR];
1761 size_t bufpos = 0, statelen = 0;
1763 assert(view_is_displayed(view));
1765 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
1766 unsigned int view_lines = view->offset + view->height;
1767 unsigned int lines = view->lines
1768 ? MIN(view_lines, view->lines) * 100 / view->lines
1769 : 0;
1771 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
1772 view->ops->type,
1773 view->lineno + 1,
1774 view->lines,
1775 lines);
1777 if (view->pipe) {
1778 time_t secs = time(NULL) - view->start_time;
1780 /* Three git seconds are a long time ... */
1781 if (secs > 2)
1782 string_format_from(state, &statelen, " %lds", secs);
1783 }
1784 }
1786 string_format_from(buf, &bufpos, "[%s]", view->name);
1787 if (*view->ref && bufpos < view->width) {
1788 size_t refsize = strlen(view->ref);
1789 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
1791 if (minsize < view->width)
1792 refsize = view->width - minsize + 7;
1793 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
1794 }
1796 if (statelen && bufpos < view->width) {
1797 string_format_from(buf, &bufpos, " %s", state);
1798 }
1800 if (view == display[current_view])
1801 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
1802 else
1803 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
1805 mvwaddnstr(view->title, 0, 0, buf, bufpos);
1806 wclrtoeol(view->title);
1807 wmove(view->title, 0, view->width - 1);
1809 if (input_mode)
1810 wnoutrefresh(view->title);
1811 else
1812 wrefresh(view->title);
1813 }
1815 static void
1816 resize_display(void)
1817 {
1818 int offset, i;
1819 struct view *base = display[0];
1820 struct view *view = display[1] ? display[1] : display[0];
1822 /* Setup window dimensions */
1824 getmaxyx(stdscr, base->height, base->width);
1826 /* Make room for the status window. */
1827 base->height -= 1;
1829 if (view != base) {
1830 /* Horizontal split. */
1831 view->width = base->width;
1832 view->height = SCALE_SPLIT_VIEW(base->height);
1833 base->height -= view->height;
1835 /* Make room for the title bar. */
1836 view->height -= 1;
1837 }
1839 /* Make room for the title bar. */
1840 base->height -= 1;
1842 offset = 0;
1844 foreach_displayed_view (view, i) {
1845 if (!view->win) {
1846 view->win = newwin(view->height, 0, offset, 0);
1847 if (!view->win)
1848 die("Failed to create %s view", view->name);
1850 scrollok(view->win, TRUE);
1852 view->title = newwin(1, 0, offset + view->height, 0);
1853 if (!view->title)
1854 die("Failed to create title window");
1856 } else {
1857 wresize(view->win, view->height, view->width);
1858 mvwin(view->win, offset, 0);
1859 mvwin(view->title, offset + view->height, 0);
1860 }
1862 offset += view->height + 1;
1863 }
1864 }
1866 static void
1867 redraw_display(void)
1868 {
1869 struct view *view;
1870 int i;
1872 foreach_displayed_view (view, i) {
1873 redraw_view(view);
1874 update_view_title(view);
1875 }
1876 }
1878 static void
1879 update_display_cursor(struct view *view)
1880 {
1881 /* Move the cursor to the right-most column of the cursor line.
1882 *
1883 * XXX: This could turn out to be a bit expensive, but it ensures that
1884 * the cursor does not jump around. */
1885 if (view->lines) {
1886 wmove(view->win, view->lineno - view->offset, view->width - 1);
1887 wrefresh(view->win);
1888 }
1889 }
1891 /*
1892 * Navigation
1893 */
1895 /* Scrolling backend */
1896 static void
1897 do_scroll_view(struct view *view, int lines)
1898 {
1899 bool redraw_current_line = FALSE;
1901 /* The rendering expects the new offset. */
1902 view->offset += lines;
1904 assert(0 <= view->offset && view->offset < view->lines);
1905 assert(lines);
1907 /* Move current line into the view. */
1908 if (view->lineno < view->offset) {
1909 view->lineno = view->offset;
1910 redraw_current_line = TRUE;
1911 } else if (view->lineno >= view->offset + view->height) {
1912 view->lineno = view->offset + view->height - 1;
1913 redraw_current_line = TRUE;
1914 }
1916 assert(view->offset <= view->lineno && view->lineno < view->lines);
1918 /* Redraw the whole screen if scrolling is pointless. */
1919 if (view->height < ABS(lines)) {
1920 redraw_view(view);
1922 } else {
1923 int line = lines > 0 ? view->height - lines : 0;
1924 int end = line + ABS(lines);
1926 wscrl(view->win, lines);
1928 for (; line < end; line++) {
1929 if (!draw_view_line(view, line))
1930 break;
1931 }
1933 if (redraw_current_line)
1934 draw_view_line(view, view->lineno - view->offset);
1935 }
1937 redrawwin(view->win);
1938 wrefresh(view->win);
1939 report("");
1940 }
1942 /* Scroll frontend */
1943 static void
1944 scroll_view(struct view *view, enum request request)
1945 {
1946 int lines = 1;
1948 assert(view_is_displayed(view));
1950 switch (request) {
1951 case REQ_SCROLL_PAGE_DOWN:
1952 lines = view->height;
1953 case REQ_SCROLL_LINE_DOWN:
1954 if (view->offset + lines > view->lines)
1955 lines = view->lines - view->offset;
1957 if (lines == 0 || view->offset + view->height >= view->lines) {
1958 report("Cannot scroll beyond the last line");
1959 return;
1960 }
1961 break;
1963 case REQ_SCROLL_PAGE_UP:
1964 lines = view->height;
1965 case REQ_SCROLL_LINE_UP:
1966 if (lines > view->offset)
1967 lines = view->offset;
1969 if (lines == 0) {
1970 report("Cannot scroll beyond the first line");
1971 return;
1972 }
1974 lines = -lines;
1975 break;
1977 default:
1978 die("request %d not handled in switch", request);
1979 }
1981 do_scroll_view(view, lines);
1982 }
1984 /* Cursor moving */
1985 static void
1986 move_view(struct view *view, enum request request)
1987 {
1988 int scroll_steps = 0;
1989 int steps;
1991 switch (request) {
1992 case REQ_MOVE_FIRST_LINE:
1993 steps = -view->lineno;
1994 break;
1996 case REQ_MOVE_LAST_LINE:
1997 steps = view->lines - view->lineno - 1;
1998 break;
2000 case REQ_MOVE_PAGE_UP:
2001 steps = view->height > view->lineno
2002 ? -view->lineno : -view->height;
2003 break;
2005 case REQ_MOVE_PAGE_DOWN:
2006 steps = view->lineno + view->height >= view->lines
2007 ? view->lines - view->lineno - 1 : view->height;
2008 break;
2010 case REQ_MOVE_UP:
2011 steps = -1;
2012 break;
2014 case REQ_MOVE_DOWN:
2015 steps = 1;
2016 break;
2018 default:
2019 die("request %d not handled in switch", request);
2020 }
2022 if (steps <= 0 && view->lineno == 0) {
2023 report("Cannot move beyond the first line");
2024 return;
2026 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2027 report("Cannot move beyond the last line");
2028 return;
2029 }
2031 /* Move the current line */
2032 view->lineno += steps;
2033 assert(0 <= view->lineno && view->lineno < view->lines);
2035 /* Check whether the view needs to be scrolled */
2036 if (view->lineno < view->offset ||
2037 view->lineno >= view->offset + view->height) {
2038 scroll_steps = steps;
2039 if (steps < 0 && -steps > view->offset) {
2040 scroll_steps = -view->offset;
2042 } else if (steps > 0) {
2043 if (view->lineno == view->lines - 1 &&
2044 view->lines > view->height) {
2045 scroll_steps = view->lines - view->offset - 1;
2046 if (scroll_steps >= view->height)
2047 scroll_steps -= view->height - 1;
2048 }
2049 }
2050 }
2052 if (!view_is_displayed(view)) {
2053 view->offset += scroll_steps;
2054 assert(0 <= view->offset && view->offset < view->lines);
2055 view->ops->select(view, &view->line[view->lineno]);
2056 return;
2057 }
2059 /* Repaint the old "current" line if we be scrolling */
2060 if (ABS(steps) < view->height)
2061 draw_view_line(view, view->lineno - steps - view->offset);
2063 if (scroll_steps) {
2064 do_scroll_view(view, scroll_steps);
2065 return;
2066 }
2068 /* Draw the current line */
2069 draw_view_line(view, view->lineno - view->offset);
2071 redrawwin(view->win);
2072 wrefresh(view->win);
2073 report("");
2074 }
2077 /*
2078 * Searching
2079 */
2081 static void search_view(struct view *view, enum request request);
2083 static bool
2084 find_next_line(struct view *view, unsigned long lineno, struct line *line)
2085 {
2086 assert(view_is_displayed(view));
2088 if (!view->ops->grep(view, line))
2089 return FALSE;
2091 if (lineno - view->offset >= view->height) {
2092 view->offset = lineno;
2093 view->lineno = lineno;
2094 redraw_view(view);
2096 } else {
2097 unsigned long old_lineno = view->lineno - view->offset;
2099 view->lineno = lineno;
2100 draw_view_line(view, old_lineno);
2102 draw_view_line(view, view->lineno - view->offset);
2103 redrawwin(view->win);
2104 wrefresh(view->win);
2105 }
2107 report("Line %ld matches '%s'", lineno + 1, view->grep);
2108 return TRUE;
2109 }
2111 static void
2112 find_next(struct view *view, enum request request)
2113 {
2114 unsigned long lineno = view->lineno;
2115 int direction;
2117 if (!*view->grep) {
2118 if (!*opt_search)
2119 report("No previous search");
2120 else
2121 search_view(view, request);
2122 return;
2123 }
2125 switch (request) {
2126 case REQ_SEARCH:
2127 case REQ_FIND_NEXT:
2128 direction = 1;
2129 break;
2131 case REQ_SEARCH_BACK:
2132 case REQ_FIND_PREV:
2133 direction = -1;
2134 break;
2136 default:
2137 return;
2138 }
2140 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2141 lineno += direction;
2143 /* Note, lineno is unsigned long so will wrap around in which case it
2144 * will become bigger than view->lines. */
2145 for (; lineno < view->lines; lineno += direction) {
2146 struct line *line = &view->line[lineno];
2148 if (find_next_line(view, lineno, line))
2149 return;
2150 }
2152 report("No match found for '%s'", view->grep);
2153 }
2155 static void
2156 search_view(struct view *view, enum request request)
2157 {
2158 int regex_err;
2160 if (view->regex) {
2161 regfree(view->regex);
2162 *view->grep = 0;
2163 } else {
2164 view->regex = calloc(1, sizeof(*view->regex));
2165 if (!view->regex)
2166 return;
2167 }
2169 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2170 if (regex_err != 0) {
2171 char buf[SIZEOF_STR] = "unknown error";
2173 regerror(regex_err, view->regex, buf, sizeof(buf));
2174 report("Search failed: %s", buf);
2175 return;
2176 }
2178 string_copy(view->grep, opt_search);
2180 find_next(view, request);
2181 }
2183 /*
2184 * Incremental updating
2185 */
2187 static void
2188 end_update(struct view *view, bool force)
2189 {
2190 if (!view->pipe)
2191 return;
2192 while (!view->ops->read(view, NULL))
2193 if (!force)
2194 return;
2195 set_nonblocking_input(FALSE);
2196 if (view->pipe == stdin)
2197 fclose(view->pipe);
2198 else
2199 pclose(view->pipe);
2200 view->pipe = NULL;
2201 }
2203 static bool
2204 begin_update(struct view *view, bool refresh)
2205 {
2206 if (opt_cmd[0]) {
2207 string_copy(view->cmd, opt_cmd);
2208 opt_cmd[0] = 0;
2209 /* When running random commands, initially show the
2210 * command in the title. However, it maybe later be
2211 * overwritten if a commit line is selected. */
2212 if (view == VIEW(REQ_VIEW_PAGER))
2213 string_copy(view->ref, view->cmd);
2214 else
2215 view->ref[0] = 0;
2217 } else if (view == VIEW(REQ_VIEW_TREE)) {
2218 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2219 char path[SIZEOF_STR];
2221 if (strcmp(view->vid, view->id))
2222 opt_path[0] = path[0] = 0;
2223 else if (sq_quote(path, 0, opt_path) >= sizeof(path))
2224 return FALSE;
2226 if (!string_format(view->cmd, format, view->id, path))
2227 return FALSE;
2229 } else if (!refresh) {
2230 const char *format = view->cmd_env ? view->cmd_env : view->cmd_fmt;
2231 const char *id = view->id;
2233 if (!string_format(view->cmd, format, id, id, id, id, id))
2234 return FALSE;
2236 /* Put the current ref_* value to the view title ref
2237 * member. This is needed by the blob view. Most other
2238 * views sets it automatically after loading because the
2239 * first line is a commit line. */
2240 string_copy_rev(view->ref, view->id);
2241 }
2243 /* Special case for the pager view. */
2244 if (opt_pipe) {
2245 view->pipe = opt_pipe;
2246 opt_pipe = NULL;
2247 } else {
2248 view->pipe = popen(view->cmd, "r");
2249 }
2251 if (!view->pipe)
2252 return FALSE;
2254 set_nonblocking_input(TRUE);
2256 view->offset = 0;
2257 view->lines = 0;
2258 view->lineno = 0;
2259 string_copy_rev(view->vid, view->id);
2261 if (view->line) {
2262 int i;
2264 for (i = 0; i < view->lines; i++)
2265 if (view->line[i].data)
2266 free(view->line[i].data);
2268 free(view->line);
2269 view->line = NULL;
2270 }
2272 view->start_time = time(NULL);
2274 return TRUE;
2275 }
2277 #define ITEM_CHUNK_SIZE 256
2278 static void *
2279 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2280 {
2281 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2282 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2284 if (mem == NULL || num_chunks != num_chunks_new) {
2285 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2286 mem = realloc(mem, *size * item_size);
2287 }
2289 return mem;
2290 }
2292 static struct line *
2293 realloc_lines(struct view *view, size_t line_size)
2294 {
2295 size_t alloc = view->line_alloc;
2296 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2297 sizeof(*view->line));
2299 if (!tmp)
2300 return NULL;
2302 view->line = tmp;
2303 view->line_alloc = alloc;
2304 view->line_size = line_size;
2305 return view->line;
2306 }
2308 static bool
2309 update_view(struct view *view)
2310 {
2311 char in_buffer[BUFSIZ];
2312 char out_buffer[BUFSIZ * 2];
2313 char *line;
2314 /* The number of lines to read. If too low it will cause too much
2315 * redrawing (and possible flickering), if too high responsiveness
2316 * will suffer. */
2317 unsigned long lines = view->height;
2318 int redraw_from = -1;
2320 if (!view->pipe)
2321 return TRUE;
2323 /* Only redraw if lines are visible. */
2324 if (view->offset + view->height >= view->lines)
2325 redraw_from = view->lines - view->offset;
2327 /* FIXME: This is probably not perfect for backgrounded views. */
2328 if (!realloc_lines(view, view->lines + lines))
2329 goto alloc_error;
2331 while ((line = fgets(in_buffer, sizeof(in_buffer), view->pipe))) {
2332 size_t linelen = strlen(line);
2334 if (linelen)
2335 line[linelen - 1] = 0;
2337 if (opt_iconv != ICONV_NONE) {
2338 ICONV_CONST char *inbuf = line;
2339 size_t inlen = linelen;
2341 char *outbuf = out_buffer;
2342 size_t outlen = sizeof(out_buffer);
2344 size_t ret;
2346 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2347 if (ret != (size_t) -1) {
2348 line = out_buffer;
2349 linelen = strlen(out_buffer);
2350 }
2351 }
2353 if (!view->ops->read(view, line))
2354 goto alloc_error;
2356 if (lines-- == 1)
2357 break;
2358 }
2360 {
2361 int digits;
2363 lines = view->lines;
2364 for (digits = 0; lines; digits++)
2365 lines /= 10;
2367 /* Keep the displayed view in sync with line number scaling. */
2368 if (digits != view->digits) {
2369 view->digits = digits;
2370 redraw_from = 0;
2371 }
2372 }
2374 if (!view_is_displayed(view))
2375 goto check_pipe;
2377 if (view == VIEW(REQ_VIEW_TREE)) {
2378 /* Clear the view and redraw everything since the tree sorting
2379 * might have rearranged things. */
2380 redraw_view(view);
2382 } else if (redraw_from >= 0) {
2383 /* If this is an incremental update, redraw the previous line
2384 * since for commits some members could have changed when
2385 * loading the main view. */
2386 if (redraw_from > 0)
2387 redraw_from--;
2389 /* Since revision graph visualization requires knowledge
2390 * about the parent commit, it causes a further one-off
2391 * needed to be redrawn for incremental updates. */
2392 if (redraw_from > 0 && opt_rev_graph)
2393 redraw_from--;
2395 /* Incrementally draw avoids flickering. */
2396 redraw_view_from(view, redraw_from);
2397 }
2399 if (view == VIEW(REQ_VIEW_BLAME))
2400 redraw_view_dirty(view);
2402 /* Update the title _after_ the redraw so that if the redraw picks up a
2403 * commit reference in view->ref it'll be available here. */
2404 update_view_title(view);
2406 check_pipe:
2407 if (ferror(view->pipe) && errno != 0) {
2408 report("Failed to read: %s", strerror(errno));
2409 end_update(view, TRUE);
2411 } else if (feof(view->pipe)) {
2412 report("");
2413 end_update(view, FALSE);
2414 }
2416 return TRUE;
2418 alloc_error:
2419 report("Allocation failure");
2420 end_update(view, TRUE);
2421 return FALSE;
2422 }
2424 static struct line *
2425 add_line_data(struct view *view, void *data, enum line_type type)
2426 {
2427 struct line *line = &view->line[view->lines++];
2429 memset(line, 0, sizeof(*line));
2430 line->type = type;
2431 line->data = data;
2433 return line;
2434 }
2436 static struct line *
2437 add_line_text(struct view *view, char *data, enum line_type type)
2438 {
2439 if (data)
2440 data = strdup(data);
2442 return data ? add_line_data(view, data, type) : NULL;
2443 }
2446 /*
2447 * View opening
2448 */
2450 enum open_flags {
2451 OPEN_DEFAULT = 0, /* Use default view switching. */
2452 OPEN_SPLIT = 1, /* Split current view. */
2453 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2454 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2455 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2456 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2457 };
2459 static void
2460 open_view(struct view *prev, enum request request, enum open_flags flags)
2461 {
2462 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2463 bool split = !!(flags & OPEN_SPLIT);
2464 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH));
2465 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2466 struct view *view = VIEW(request);
2467 int nviews = displayed_views();
2468 struct view *base_view = display[0];
2470 if (view == prev && nviews == 1 && !reload) {
2471 report("Already in %s view", view->name);
2472 return;
2473 }
2475 if (view->git_dir && !opt_git_dir[0]) {
2476 report("The %s view is disabled in pager view", view->name);
2477 return;
2478 }
2480 if (split) {
2481 display[1] = view;
2482 if (!backgrounded)
2483 current_view = 1;
2484 } else if (!nomaximize) {
2485 /* Maximize the current view. */
2486 memset(display, 0, sizeof(display));
2487 current_view = 0;
2488 display[current_view] = view;
2489 }
2491 /* Resize the view when switching between split- and full-screen,
2492 * or when switching between two different full-screen views. */
2493 if (nviews != displayed_views() ||
2494 (nviews == 1 && base_view != display[0]))
2495 resize_display();
2497 if (view->pipe)
2498 end_update(view, TRUE);
2500 if (view->ops->open) {
2501 if (!view->ops->open(view)) {
2502 report("Failed to load %s view", view->name);
2503 return;
2504 }
2506 } else if ((reload || strcmp(view->vid, view->id)) &&
2507 !begin_update(view, flags & OPEN_REFRESH)) {
2508 report("Failed to load %s view", view->name);
2509 return;
2510 }
2512 if (split && prev->lineno - prev->offset >= prev->height) {
2513 /* Take the title line into account. */
2514 int lines = prev->lineno - prev->offset - prev->height + 1;
2516 /* Scroll the view that was split if the current line is
2517 * outside the new limited view. */
2518 do_scroll_view(prev, lines);
2519 }
2521 if (prev && view != prev) {
2522 if (split && !backgrounded) {
2523 /* "Blur" the previous view. */
2524 update_view_title(prev);
2525 }
2527 view->parent = prev;
2528 }
2530 if (view->pipe && view->lines == 0) {
2531 /* Clear the old view and let the incremental updating refill
2532 * the screen. */
2533 werase(view->win);
2534 report("");
2535 } else {
2536 redraw_view(view);
2537 report("");
2538 }
2540 /* If the view is backgrounded the above calls to report()
2541 * won't redraw the view title. */
2542 if (backgrounded)
2543 update_view_title(view);
2544 }
2546 static bool
2547 run_confirm(const char *cmd, const char *prompt)
2548 {
2549 bool confirmation = prompt_yesno(prompt);
2551 if (confirmation)
2552 system(cmd);
2554 return confirmation;
2555 }
2557 static void
2558 open_external_viewer(const char *cmd)
2559 {
2560 def_prog_mode(); /* save current tty modes */
2561 endwin(); /* restore original tty modes */
2562 system(cmd);
2563 fprintf(stderr, "Press Enter to continue");
2564 getc(stdin);
2565 reset_prog_mode();
2566 redraw_display();
2567 }
2569 static void
2570 open_mergetool(const char *file)
2571 {
2572 char cmd[SIZEOF_STR];
2573 char file_sq[SIZEOF_STR];
2575 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2576 string_format(cmd, "git mergetool %s", file_sq)) {
2577 open_external_viewer(cmd);
2578 }
2579 }
2581 static void
2582 open_editor(bool from_root, const char *file)
2583 {
2584 char cmd[SIZEOF_STR];
2585 char file_sq[SIZEOF_STR];
2586 char *editor;
2587 char *prefix = from_root ? opt_cdup : "";
2589 editor = getenv("GIT_EDITOR");
2590 if (!editor && *opt_editor)
2591 editor = opt_editor;
2592 if (!editor)
2593 editor = getenv("VISUAL");
2594 if (!editor)
2595 editor = getenv("EDITOR");
2596 if (!editor)
2597 editor = "vi";
2599 if (sq_quote(file_sq, 0, file) < sizeof(file_sq) &&
2600 string_format(cmd, "%s %s%s", editor, prefix, file_sq)) {
2601 open_external_viewer(cmd);
2602 }
2603 }
2605 static void
2606 open_run_request(enum request request)
2607 {
2608 struct run_request *req = get_run_request(request);
2609 char buf[SIZEOF_STR * 2];
2610 size_t bufpos;
2611 char *cmd;
2613 if (!req) {
2614 report("Unknown run request");
2615 return;
2616 }
2618 bufpos = 0;
2619 cmd = req->cmd;
2621 while (cmd) {
2622 char *next = strstr(cmd, "%(");
2623 int len = next - cmd;
2624 char *value;
2626 if (!next) {
2627 len = strlen(cmd);
2628 value = "";
2630 } else if (!strncmp(next, "%(head)", 7)) {
2631 value = ref_head;
2633 } else if (!strncmp(next, "%(commit)", 9)) {
2634 value = ref_commit;
2636 } else if (!strncmp(next, "%(blob)", 7)) {
2637 value = ref_blob;
2639 } else {
2640 report("Unknown replacement in run request: `%s`", req->cmd);
2641 return;
2642 }
2644 if (!string_format_from(buf, &bufpos, "%.*s%s", len, cmd, value))
2645 return;
2647 if (next)
2648 next = strchr(next, ')') + 1;
2649 cmd = next;
2650 }
2652 open_external_viewer(buf);
2653 }
2655 /*
2656 * User request switch noodle
2657 */
2659 static int
2660 view_driver(struct view *view, enum request request)
2661 {
2662 int i;
2664 if (request == REQ_NONE) {
2665 doupdate();
2666 return TRUE;
2667 }
2669 if (request > REQ_NONE) {
2670 open_run_request(request);
2671 /* FIXME: When all views can refresh always do this. */
2672 if (view == VIEW(REQ_VIEW_STATUS) ||
2673 view == VIEW(REQ_VIEW_MAIN) ||
2674 view == VIEW(REQ_VIEW_LOG) ||
2675 view == VIEW(REQ_VIEW_STAGE))
2676 request = REQ_REFRESH;
2677 else
2678 return TRUE;
2679 }
2681 if (view && view->lines) {
2682 request = view->ops->request(view, request, &view->line[view->lineno]);
2683 if (request == REQ_NONE)
2684 return TRUE;
2685 }
2687 switch (request) {
2688 case REQ_MOVE_UP:
2689 case REQ_MOVE_DOWN:
2690 case REQ_MOVE_PAGE_UP:
2691 case REQ_MOVE_PAGE_DOWN:
2692 case REQ_MOVE_FIRST_LINE:
2693 case REQ_MOVE_LAST_LINE:
2694 move_view(view, request);
2695 break;
2697 case REQ_SCROLL_LINE_DOWN:
2698 case REQ_SCROLL_LINE_UP:
2699 case REQ_SCROLL_PAGE_DOWN:
2700 case REQ_SCROLL_PAGE_UP:
2701 scroll_view(view, request);
2702 break;
2704 case REQ_VIEW_BLAME:
2705 if (!opt_file[0]) {
2706 report("No file chosen, press %s to open tree view",
2707 get_key(REQ_VIEW_TREE));
2708 break;
2709 }
2710 open_view(view, request, OPEN_DEFAULT);
2711 break;
2713 case REQ_VIEW_BLOB:
2714 if (!ref_blob[0]) {
2715 report("No file chosen, press %s to open tree view",
2716 get_key(REQ_VIEW_TREE));
2717 break;
2718 }
2719 open_view(view, request, OPEN_DEFAULT);
2720 break;
2722 case REQ_VIEW_PAGER:
2723 if (!opt_pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
2724 report("No pager content, press %s to run command from prompt",
2725 get_key(REQ_PROMPT));
2726 break;
2727 }
2728 open_view(view, request, OPEN_DEFAULT);
2729 break;
2731 case REQ_VIEW_STAGE:
2732 if (!VIEW(REQ_VIEW_STAGE)->lines) {
2733 report("No stage content, press %s to open the status view and choose file",
2734 get_key(REQ_VIEW_STATUS));
2735 break;
2736 }
2737 open_view(view, request, OPEN_DEFAULT);
2738 break;
2740 case REQ_VIEW_STATUS:
2741 if (opt_is_inside_work_tree == FALSE) {
2742 report("The status view requires a working tree");
2743 break;
2744 }
2745 open_view(view, request, OPEN_DEFAULT);
2746 break;
2748 case REQ_VIEW_MAIN:
2749 case REQ_VIEW_DIFF:
2750 case REQ_VIEW_LOG:
2751 case REQ_VIEW_TREE:
2752 case REQ_VIEW_HELP:
2753 open_view(view, request, OPEN_DEFAULT);
2754 break;
2756 case REQ_NEXT:
2757 case REQ_PREVIOUS:
2758 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
2760 if ((view == VIEW(REQ_VIEW_DIFF) &&
2761 view->parent == VIEW(REQ_VIEW_MAIN)) ||
2762 (view == VIEW(REQ_VIEW_DIFF) &&
2763 view->parent == VIEW(REQ_VIEW_BLAME)) ||
2764 (view == VIEW(REQ_VIEW_STAGE) &&
2765 view->parent == VIEW(REQ_VIEW_STATUS)) ||
2766 (view == VIEW(REQ_VIEW_BLOB) &&
2767 view->parent == VIEW(REQ_VIEW_TREE))) {
2768 int line;
2770 view = view->parent;
2771 line = view->lineno;
2772 move_view(view, request);
2773 if (view_is_displayed(view))
2774 update_view_title(view);
2775 if (line != view->lineno)
2776 view->ops->request(view, REQ_ENTER,
2777 &view->line[view->lineno]);
2779 } else {
2780 move_view(view, request);
2781 }
2782 break;
2784 case REQ_VIEW_NEXT:
2785 {
2786 int nviews = displayed_views();
2787 int next_view = (current_view + 1) % nviews;
2789 if (next_view == current_view) {
2790 report("Only one view is displayed");
2791 break;
2792 }
2794 current_view = next_view;
2795 /* Blur out the title of the previous view. */
2796 update_view_title(view);
2797 report("");
2798 break;
2799 }
2800 case REQ_REFRESH:
2801 report("Refreshing is not yet supported for the %s view", view->name);
2802 break;
2804 case REQ_MAXIMIZE:
2805 if (displayed_views() == 2)
2806 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
2807 break;
2809 case REQ_TOGGLE_LINENO:
2810 opt_line_number = !opt_line_number;
2811 redraw_display();
2812 break;
2814 case REQ_TOGGLE_DATE:
2815 opt_date = !opt_date;
2816 redraw_display();
2817 break;
2819 case REQ_TOGGLE_AUTHOR:
2820 opt_author = !opt_author;
2821 redraw_display();
2822 break;
2824 case REQ_TOGGLE_REV_GRAPH:
2825 opt_rev_graph = !opt_rev_graph;
2826 redraw_display();
2827 break;
2829 case REQ_TOGGLE_REFS:
2830 opt_show_refs = !opt_show_refs;
2831 redraw_display();
2832 break;
2834 case REQ_SEARCH:
2835 case REQ_SEARCH_BACK:
2836 search_view(view, request);
2837 break;
2839 case REQ_FIND_NEXT:
2840 case REQ_FIND_PREV:
2841 find_next(view, request);
2842 break;
2844 case REQ_STOP_LOADING:
2845 for (i = 0; i < ARRAY_SIZE(views); i++) {
2846 view = &views[i];
2847 if (view->pipe)
2848 report("Stopped loading the %s view", view->name),
2849 end_update(view, TRUE);
2850 }
2851 break;
2853 case REQ_SHOW_VERSION:
2854 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
2855 return TRUE;
2857 case REQ_SCREEN_RESIZE:
2858 resize_display();
2859 /* Fall-through */
2860 case REQ_SCREEN_REDRAW:
2861 redraw_display();
2862 break;
2864 case REQ_EDIT:
2865 report("Nothing to edit");
2866 break;
2868 case REQ_ENTER:
2869 report("Nothing to enter");
2870 break;
2872 case REQ_VIEW_CLOSE:
2873 /* XXX: Mark closed views by letting view->parent point to the
2874 * view itself. Parents to closed view should never be
2875 * followed. */
2876 if (view->parent &&
2877 view->parent->parent != view->parent) {
2878 memset(display, 0, sizeof(display));
2879 current_view = 0;
2880 display[current_view] = view->parent;
2881 view->parent = view;
2882 resize_display();
2883 redraw_display();
2884 report("");
2885 break;
2886 }
2887 /* Fall-through */
2888 case REQ_QUIT:
2889 return FALSE;
2891 default:
2892 /* An unknown key will show most commonly used commands. */
2893 report("Unknown key, press 'h' for help");
2894 return TRUE;
2895 }
2897 return TRUE;
2898 }
2901 /*
2902 * Pager backend
2903 */
2905 static bool
2906 pager_draw(struct view *view, struct line *line, unsigned int lineno)
2907 {
2908 char *text = line->data;
2910 if (opt_line_number && draw_lineno(view, lineno))
2911 return TRUE;
2913 draw_text(view, line->type, text, TRUE);
2914 return TRUE;
2915 }
2917 static bool
2918 add_describe_ref(char *buf, size_t *bufpos, char *commit_id, const char *sep)
2919 {
2920 char refbuf[SIZEOF_STR];
2921 char *ref = NULL;
2922 FILE *pipe;
2924 if (!string_format(refbuf, "git describe %s 2>/dev/null", commit_id))
2925 return TRUE;
2927 pipe = popen(refbuf, "r");
2928 if (!pipe)
2929 return TRUE;
2931 if ((ref = fgets(refbuf, sizeof(refbuf), pipe)))
2932 ref = chomp_string(ref);
2933 pclose(pipe);
2935 if (!ref || !*ref)
2936 return TRUE;
2938 /* This is the only fatal call, since it can "corrupt" the buffer. */
2939 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
2940 return FALSE;
2942 return TRUE;
2943 }
2945 static void
2946 add_pager_refs(struct view *view, struct line *line)
2947 {
2948 char buf[SIZEOF_STR];
2949 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
2950 struct ref **refs;
2951 size_t bufpos = 0, refpos = 0;
2952 const char *sep = "Refs: ";
2953 bool is_tag = FALSE;
2955 assert(line->type == LINE_COMMIT);
2957 refs = get_refs(commit_id);
2958 if (!refs) {
2959 if (view == VIEW(REQ_VIEW_DIFF))
2960 goto try_add_describe_ref;
2961 return;
2962 }
2964 do {
2965 struct ref *ref = refs[refpos];
2966 char *fmt = ref->tag ? "%s[%s]" :
2967 ref->remote ? "%s<%s>" : "%s%s";
2969 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
2970 return;
2971 sep = ", ";
2972 if (ref->tag)
2973 is_tag = TRUE;
2974 } while (refs[refpos++]->next);
2976 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
2977 try_add_describe_ref:
2978 /* Add <tag>-g<commit_id> "fake" reference. */
2979 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
2980 return;
2981 }
2983 if (bufpos == 0)
2984 return;
2986 if (!realloc_lines(view, view->line_size + 1))
2987 return;
2989 add_line_text(view, buf, LINE_PP_REFS);
2990 }
2992 static bool
2993 pager_read(struct view *view, char *data)
2994 {
2995 struct line *line;
2997 if (!data)
2998 return TRUE;
3000 line = add_line_text(view, data, get_line_type(data));
3001 if (!line)
3002 return FALSE;
3004 if (line->type == LINE_COMMIT &&
3005 (view == VIEW(REQ_VIEW_DIFF) ||
3006 view == VIEW(REQ_VIEW_LOG)))
3007 add_pager_refs(view, line);
3009 return TRUE;
3010 }
3012 static enum request
3013 pager_request(struct view *view, enum request request, struct line *line)
3014 {
3015 int split = 0;
3017 if (request != REQ_ENTER)
3018 return request;
3020 if (line->type == LINE_COMMIT &&
3021 (view == VIEW(REQ_VIEW_LOG) ||
3022 view == VIEW(REQ_VIEW_PAGER))) {
3023 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3024 split = 1;
3025 }
3027 /* Always scroll the view even if it was split. That way
3028 * you can use Enter to scroll through the log view and
3029 * split open each commit diff. */
3030 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3032 /* FIXME: A minor workaround. Scrolling the view will call report("")
3033 * but if we are scrolling a non-current view this won't properly
3034 * update the view title. */
3035 if (split)
3036 update_view_title(view);
3038 return REQ_NONE;
3039 }
3041 static bool
3042 pager_grep(struct view *view, struct line *line)
3043 {
3044 regmatch_t pmatch;
3045 char *text = line->data;
3047 if (!*text)
3048 return FALSE;
3050 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3051 return FALSE;
3053 return TRUE;
3054 }
3056 static void
3057 pager_select(struct view *view, struct line *line)
3058 {
3059 if (line->type == LINE_COMMIT) {
3060 char *text = (char *)line->data + STRING_SIZE("commit ");
3062 if (view != VIEW(REQ_VIEW_PAGER))
3063 string_copy_rev(view->ref, text);
3064 string_copy_rev(ref_commit, text);
3065 }
3066 }
3068 static struct view_ops pager_ops = {
3069 "line",
3070 NULL,
3071 pager_read,
3072 pager_draw,
3073 pager_request,
3074 pager_grep,
3075 pager_select,
3076 };
3078 static enum request
3079 log_request(struct view *view, enum request request, struct line *line)
3080 {
3081 switch (request) {
3082 case REQ_REFRESH:
3083 load_refs();
3084 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3085 return REQ_NONE;
3086 default:
3087 return pager_request(view, request, line);
3088 }
3089 }
3091 static struct view_ops log_ops = {
3092 "line",
3093 NULL,
3094 pager_read,
3095 pager_draw,
3096 log_request,
3097 pager_grep,
3098 pager_select,
3099 };
3102 /*
3103 * Help backend
3104 */
3106 static bool
3107 help_open(struct view *view)
3108 {
3109 char buf[BUFSIZ];
3110 int lines = ARRAY_SIZE(req_info) + 2;
3111 int i;
3113 if (view->lines > 0)
3114 return TRUE;
3116 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3117 if (!req_info[i].request)
3118 lines++;
3120 lines += run_requests + 1;
3122 view->line = calloc(lines, sizeof(*view->line));
3123 if (!view->line)
3124 return FALSE;
3126 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3128 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3129 char *key;
3131 if (req_info[i].request == REQ_NONE)
3132 continue;
3134 if (!req_info[i].request) {
3135 add_line_text(view, "", LINE_DEFAULT);
3136 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3137 continue;
3138 }
3140 key = get_key(req_info[i].request);
3141 if (!*key)
3142 key = "(no key defined)";
3144 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
3145 continue;
3147 add_line_text(view, buf, LINE_DEFAULT);
3148 }
3150 if (run_requests) {
3151 add_line_text(view, "", LINE_DEFAULT);
3152 add_line_text(view, "External commands:", LINE_DEFAULT);
3153 }
3155 for (i = 0; i < run_requests; i++) {
3156 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3157 char *key;
3159 if (!req)
3160 continue;
3162 key = get_key_name(req->key);
3163 if (!*key)
3164 key = "(no key defined)";
3166 if (!string_format(buf, " %-10s %-14s `%s`",
3167 keymap_table[req->keymap].name,
3168 key, req->cmd))
3169 continue;
3171 add_line_text(view, buf, LINE_DEFAULT);
3172 }
3174 return TRUE;
3175 }
3177 static struct view_ops help_ops = {
3178 "line",
3179 help_open,
3180 NULL,
3181 pager_draw,
3182 pager_request,
3183 pager_grep,
3184 pager_select,
3185 };
3188 /*
3189 * Tree backend
3190 */
3192 struct tree_stack_entry {
3193 struct tree_stack_entry *prev; /* Entry below this in the stack */
3194 unsigned long lineno; /* Line number to restore */
3195 char *name; /* Position of name in opt_path */
3196 };
3198 /* The top of the path stack. */
3199 static struct tree_stack_entry *tree_stack = NULL;
3200 unsigned long tree_lineno = 0;
3202 static void
3203 pop_tree_stack_entry(void)
3204 {
3205 struct tree_stack_entry *entry = tree_stack;
3207 tree_lineno = entry->lineno;
3208 entry->name[0] = 0;
3209 tree_stack = entry->prev;
3210 free(entry);
3211 }
3213 static void
3214 push_tree_stack_entry(char *name, unsigned long lineno)
3215 {
3216 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3217 size_t pathlen = strlen(opt_path);
3219 if (!entry)
3220 return;
3222 entry->prev = tree_stack;
3223 entry->name = opt_path + pathlen;
3224 tree_stack = entry;
3226 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3227 pop_tree_stack_entry();
3228 return;
3229 }
3231 /* Move the current line to the first tree entry. */
3232 tree_lineno = 1;
3233 entry->lineno = lineno;
3234 }
3236 /* Parse output from git-ls-tree(1):
3237 *
3238 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3239 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3240 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3241 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3242 */
3244 #define SIZEOF_TREE_ATTR \
3245 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3247 #define TREE_UP_FORMAT "040000 tree %s\t.."
3249 static int
3250 tree_compare_entry(enum line_type type1, char *name1,
3251 enum line_type type2, char *name2)
3252 {
3253 if (type1 != type2) {
3254 if (type1 == LINE_TREE_DIR)
3255 return -1;
3256 return 1;
3257 }
3259 return strcmp(name1, name2);
3260 }
3262 static char *
3263 tree_path(struct line *line)
3264 {
3265 char *path = line->data;
3267 return path + SIZEOF_TREE_ATTR;
3268 }
3270 static bool
3271 tree_read(struct view *view, char *text)
3272 {
3273 size_t textlen = text ? strlen(text) : 0;
3274 char buf[SIZEOF_STR];
3275 unsigned long pos;
3276 enum line_type type;
3277 bool first_read = view->lines == 0;
3279 if (!text)
3280 return TRUE;
3281 if (textlen <= SIZEOF_TREE_ATTR)
3282 return FALSE;
3284 type = text[STRING_SIZE("100644 ")] == 't'
3285 ? LINE_TREE_DIR : LINE_TREE_FILE;
3287 if (first_read) {
3288 /* Add path info line */
3289 if (!string_format(buf, "Directory path /%s", opt_path) ||
3290 !realloc_lines(view, view->line_size + 1) ||
3291 !add_line_text(view, buf, LINE_DEFAULT))
3292 return FALSE;
3294 /* Insert "link" to parent directory. */
3295 if (*opt_path) {
3296 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
3297 !realloc_lines(view, view->line_size + 1) ||
3298 !add_line_text(view, buf, LINE_TREE_DIR))
3299 return FALSE;
3300 }
3301 }
3303 /* Strip the path part ... */
3304 if (*opt_path) {
3305 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3306 size_t striplen = strlen(opt_path);
3307 char *path = text + SIZEOF_TREE_ATTR;
3309 if (pathlen > striplen)
3310 memmove(path, path + striplen,
3311 pathlen - striplen + 1);
3312 }
3314 /* Skip "Directory ..." and ".." line. */
3315 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
3316 struct line *line = &view->line[pos];
3317 char *path1 = tree_path(line);
3318 char *path2 = text + SIZEOF_TREE_ATTR;
3319 int cmp = tree_compare_entry(line->type, path1, type, path2);
3321 if (cmp <= 0)
3322 continue;
3324 text = strdup(text);
3325 if (!text)
3326 return FALSE;
3328 if (view->lines > pos)
3329 memmove(&view->line[pos + 1], &view->line[pos],
3330 (view->lines - pos) * sizeof(*line));
3332 line = &view->line[pos];
3333 line->data = text;
3334 line->type = type;
3335 view->lines++;
3336 return TRUE;
3337 }
3339 if (!add_line_text(view, text, type))
3340 return FALSE;
3342 if (tree_lineno > view->lineno) {
3343 view->lineno = tree_lineno;
3344 tree_lineno = 0;
3345 }
3347 return TRUE;
3348 }
3350 static enum request
3351 tree_request(struct view *view, enum request request, struct line *line)
3352 {
3353 enum open_flags flags;
3355 if (request == REQ_VIEW_BLAME) {
3356 char *filename = tree_path(line);
3358 if (line->type == LINE_TREE_DIR) {
3359 report("Cannot show blame for directory %s", opt_path);
3360 return REQ_NONE;
3361 }
3363 string_copy(opt_ref, view->vid);
3364 string_format(opt_file, "%s%s", opt_path, filename);
3365 return request;
3366 }
3367 if (request == REQ_TREE_PARENT) {
3368 if (*opt_path) {
3369 /* fake 'cd ..' */
3370 request = REQ_ENTER;
3371 line = &view->line[1];
3372 } else {
3373 /* quit view if at top of tree */
3374 return REQ_VIEW_CLOSE;
3375 }
3376 }
3377 if (request != REQ_ENTER)
3378 return request;
3380 /* Cleanup the stack if the tree view is at a different tree. */
3381 while (!*opt_path && tree_stack)
3382 pop_tree_stack_entry();
3384 switch (line->type) {
3385 case LINE_TREE_DIR:
3386 /* Depending on whether it is a subdir or parent (updir?) link
3387 * mangle the path buffer. */
3388 if (line == &view->line[1] && *opt_path) {
3389 pop_tree_stack_entry();
3391 } else {
3392 char *basename = tree_path(line);
3394 push_tree_stack_entry(basename, view->lineno);
3395 }
3397 /* Trees and subtrees share the same ID, so they are not not
3398 * unique like blobs. */
3399 flags = OPEN_RELOAD;
3400 request = REQ_VIEW_TREE;
3401 break;
3403 case LINE_TREE_FILE:
3404 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3405 request = REQ_VIEW_BLOB;
3406 break;
3408 default:
3409 return TRUE;
3410 }
3412 open_view(view, request, flags);
3413 if (request == REQ_VIEW_TREE) {
3414 view->lineno = tree_lineno;
3415 }
3417 return REQ_NONE;
3418 }
3420 static void
3421 tree_select(struct view *view, struct line *line)
3422 {
3423 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3425 if (line->type == LINE_TREE_FILE) {
3426 string_copy_rev(ref_blob, text);
3428 } else if (line->type != LINE_TREE_DIR) {
3429 return;
3430 }
3432 string_copy_rev(view->ref, text);
3433 }
3435 static struct view_ops tree_ops = {
3436 "file",
3437 NULL,
3438 tree_read,
3439 pager_draw,
3440 tree_request,
3441 pager_grep,
3442 tree_select,
3443 };
3445 static bool
3446 blob_read(struct view *view, char *line)
3447 {
3448 if (!line)
3449 return TRUE;
3450 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3451 }
3453 static struct view_ops blob_ops = {
3454 "line",
3455 NULL,
3456 blob_read,
3457 pager_draw,
3458 pager_request,
3459 pager_grep,
3460 pager_select,
3461 };
3463 /*
3464 * Blame backend
3465 *
3466 * Loading the blame view is a two phase job:
3467 *
3468 * 1. File content is read either using opt_file from the
3469 * filesystem or using git-cat-file.
3470 * 2. Then blame information is incrementally added by
3471 * reading output from git-blame.
3472 */
3474 struct blame_commit {
3475 char id[SIZEOF_REV]; /* SHA1 ID. */
3476 char title[128]; /* First line of the commit message. */
3477 char author[75]; /* Author of the commit. */
3478 struct tm time; /* Date from the author ident. */
3479 char filename[128]; /* Name of file. */
3480 };
3482 struct blame {
3483 struct blame_commit *commit;
3484 unsigned int header:1;
3485 char text[1];
3486 };
3488 #define BLAME_CAT_FILE_CMD "git cat-file blob %s:%s"
3489 #define BLAME_INCREMENTAL_CMD "git blame --incremental %s %s"
3491 static bool
3492 blame_open(struct view *view)
3493 {
3494 char path[SIZEOF_STR];
3495 char ref[SIZEOF_STR] = "";
3497 if (sq_quote(path, 0, opt_file) >= sizeof(path))
3498 return FALSE;
3500 if (*opt_ref && sq_quote(ref, 0, opt_ref) >= sizeof(ref))
3501 return FALSE;
3503 if (*opt_ref) {
3504 if (!string_format(view->cmd, BLAME_CAT_FILE_CMD, ref, path))
3505 return FALSE;
3506 } else {
3507 view->pipe = fopen(opt_file, "r");
3508 if (!view->pipe &&
3509 !string_format(view->cmd, BLAME_CAT_FILE_CMD, "HEAD", path))
3510 return FALSE;
3511 }
3513 if (!view->pipe)
3514 view->pipe = popen(view->cmd, "r");
3515 if (!view->pipe)
3516 return FALSE;
3518 if (!string_format(view->cmd, BLAME_INCREMENTAL_CMD, ref, path))
3519 return FALSE;
3521 string_format(view->ref, "%s ...", opt_file);
3522 string_copy_rev(view->vid, opt_file);
3523 set_nonblocking_input(TRUE);
3525 if (view->line) {
3526 int i;
3528 for (i = 0; i < view->lines; i++)
3529 free(view->line[i].data);
3530 free(view->line);
3531 }
3533 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
3534 view->offset = view->lines = view->lineno = 0;
3535 view->line = NULL;
3536 view->start_time = time(NULL);
3538 return TRUE;
3539 }
3541 static struct blame_commit *
3542 get_blame_commit(struct view *view, const char *id)
3543 {
3544 size_t i;
3546 for (i = 0; i < view->lines; i++) {
3547 struct blame *blame = view->line[i].data;
3549 if (!blame->commit)
3550 continue;
3552 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3553 return blame->commit;
3554 }
3556 {
3557 struct blame_commit *commit = calloc(1, sizeof(*commit));
3559 if (commit)
3560 string_ncopy(commit->id, id, SIZEOF_REV);
3561 return commit;
3562 }
3563 }
3565 static bool
3566 parse_number(char **posref, size_t *number, size_t min, size_t max)
3567 {
3568 char *pos = *posref;
3570 *posref = NULL;
3571 pos = strchr(pos + 1, ' ');
3572 if (!pos || !isdigit(pos[1]))
3573 return FALSE;
3574 *number = atoi(pos + 1);
3575 if (*number < min || *number > max)
3576 return FALSE;
3578 *posref = pos;
3579 return TRUE;
3580 }
3582 static struct blame_commit *
3583 parse_blame_commit(struct view *view, char *text, int *blamed)
3584 {
3585 struct blame_commit *commit;
3586 struct blame *blame;
3587 char *pos = text + SIZEOF_REV - 1;
3588 size_t lineno;
3589 size_t group;
3591 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3592 return NULL;
3594 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3595 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3596 return NULL;
3598 commit = get_blame_commit(view, text);
3599 if (!commit)
3600 return NULL;
3602 *blamed += group;
3603 while (group--) {
3604 struct line *line = &view->line[lineno + group - 1];
3606 blame = line->data;
3607 blame->commit = commit;
3608 blame->header = !group;
3609 line->dirty = 1;
3610 }
3612 return commit;
3613 }
3615 static bool
3616 blame_read_file(struct view *view, char *line)
3617 {
3618 if (!line) {
3619 FILE *pipe = NULL;
3621 if (view->lines > 0)
3622 pipe = popen(view->cmd, "r");
3623 else if (!view->parent)
3624 die("No blame exist for %s", view->vid);
3625 view->cmd[0] = 0;
3626 if (!pipe) {
3627 report("Failed to load blame data");
3628 return TRUE;
3629 }
3631 fclose(view->pipe);
3632 view->pipe = pipe;
3633 return FALSE;
3635 } else {
3636 size_t linelen = strlen(line);
3637 struct blame *blame = malloc(sizeof(*blame) + linelen);
3639 blame->commit = NULL;
3640 strncpy(blame->text, line, linelen);
3641 blame->text[linelen] = 0;
3642 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
3643 }
3644 }
3646 static bool
3647 match_blame_header(const char *name, char **line)
3648 {
3649 size_t namelen = strlen(name);
3650 bool matched = !strncmp(name, *line, namelen);
3652 if (matched)
3653 *line += namelen;
3655 return matched;
3656 }
3658 static bool
3659 blame_read(struct view *view, char *line)
3660 {
3661 static struct blame_commit *commit = NULL;
3662 static int blamed = 0;
3663 static time_t author_time;
3665 if (*view->cmd)
3666 return blame_read_file(view, line);
3668 if (!line) {
3669 /* Reset all! */
3670 commit = NULL;
3671 blamed = 0;
3672 string_format(view->ref, "%s", view->vid);
3673 if (view_is_displayed(view)) {
3674 update_view_title(view);
3675 redraw_view_from(view, 0);
3676 }
3677 return TRUE;
3678 }
3680 if (!commit) {
3681 commit = parse_blame_commit(view, line, &blamed);
3682 string_format(view->ref, "%s %2d%%", view->vid,
3683 blamed * 100 / view->lines);
3685 } else if (match_blame_header("author ", &line)) {
3686 string_ncopy(commit->author, line, strlen(line));
3688 } else if (match_blame_header("author-time ", &line)) {
3689 author_time = (time_t) atol(line);
3691 } else if (match_blame_header("author-tz ", &line)) {
3692 long tz;
3694 tz = ('0' - line[1]) * 60 * 60 * 10;
3695 tz += ('0' - line[2]) * 60 * 60;
3696 tz += ('0' - line[3]) * 60;
3697 tz += ('0' - line[4]) * 60;
3699 if (line[0] == '-')
3700 tz = -tz;
3702 author_time -= tz;
3703 gmtime_r(&author_time, &commit->time);
3705 } else if (match_blame_header("summary ", &line)) {
3706 string_ncopy(commit->title, line, strlen(line));
3708 } else if (match_blame_header("filename ", &line)) {
3709 string_ncopy(commit->filename, line, strlen(line));
3710 commit = NULL;
3711 }
3713 return TRUE;
3714 }
3716 static bool
3717 blame_draw(struct view *view, struct line *line, unsigned int lineno)
3718 {
3719 struct blame *blame = line->data;
3720 struct tm *time = NULL;
3721 char *id = NULL, *author = NULL;
3723 if (blame->commit && *blame->commit->filename) {
3724 id = blame->commit->id;
3725 author = blame->commit->author;
3726 time = &blame->commit->time;
3727 }
3729 if (opt_date && draw_date(view, time))
3730 return TRUE;
3732 if (opt_author &&
3733 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
3734 return TRUE;
3736 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
3737 return TRUE;
3739 if (draw_lineno(view, lineno))
3740 return TRUE;
3742 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
3743 return TRUE;
3744 }
3746 static enum request
3747 blame_request(struct view *view, enum request request, struct line *line)
3748 {
3749 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3750 struct blame *blame = line->data;
3752 switch (request) {
3753 case REQ_ENTER:
3754 if (!blame->commit) {
3755 report("No commit loaded yet");
3756 break;
3757 }
3759 if (!strcmp(blame->commit->id, NULL_ID)) {
3760 char path[SIZEOF_STR];
3762 if (sq_quote(path, 0, view->vid) >= sizeof(path))
3763 break;
3764 string_format(opt_cmd, "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s 2>/dev/null", path);
3765 }
3767 open_view(view, REQ_VIEW_DIFF, flags);
3768 break;
3770 default:
3771 return request;
3772 }
3774 return REQ_NONE;
3775 }
3777 static bool
3778 blame_grep(struct view *view, struct line *line)
3779 {
3780 struct blame *blame = line->data;
3781 struct blame_commit *commit = blame->commit;
3782 regmatch_t pmatch;
3784 #define MATCH(text, on) \
3785 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
3787 if (commit) {
3788 char buf[DATE_COLS + 1];
3790 if (MATCH(commit->title, 1) ||
3791 MATCH(commit->author, opt_author) ||
3792 MATCH(commit->id, opt_date))
3793 return TRUE;
3795 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
3796 MATCH(buf, 1))
3797 return TRUE;
3798 }
3800 return MATCH(blame->text, 1);
3802 #undef MATCH
3803 }
3805 static void
3806 blame_select(struct view *view, struct line *line)
3807 {
3808 struct blame *blame = line->data;
3809 struct blame_commit *commit = blame->commit;
3811 if (!commit)
3812 return;
3814 if (!strcmp(commit->id, NULL_ID))
3815 string_ncopy(ref_commit, "HEAD", 4);
3816 else
3817 string_copy_rev(ref_commit, commit->id);
3818 }
3820 static struct view_ops blame_ops = {
3821 "line",
3822 blame_open,
3823 blame_read,
3824 blame_draw,
3825 blame_request,
3826 blame_grep,
3827 blame_select,
3828 };
3830 /*
3831 * Status backend
3832 */
3834 struct status {
3835 char status;
3836 struct {
3837 mode_t mode;
3838 char rev[SIZEOF_REV];
3839 char name[SIZEOF_STR];
3840 } old;
3841 struct {
3842 mode_t mode;
3843 char rev[SIZEOF_REV];
3844 char name[SIZEOF_STR];
3845 } new;
3846 };
3848 static char status_onbranch[SIZEOF_STR];
3849 static struct status stage_status;
3850 static enum line_type stage_line_type;
3851 static size_t stage_chunks;
3852 static int *stage_chunk;
3854 /* This should work even for the "On branch" line. */
3855 static inline bool
3856 status_has_none(struct view *view, struct line *line)
3857 {
3858 return line < view->line + view->lines && !line[1].data;
3859 }
3861 /* Get fields from the diff line:
3862 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
3863 */
3864 static inline bool
3865 status_get_diff(struct status *file, char *buf, size_t bufsize)
3866 {
3867 char *old_mode = buf + 1;
3868 char *new_mode = buf + 8;
3869 char *old_rev = buf + 15;
3870 char *new_rev = buf + 56;
3871 char *status = buf + 97;
3873 if (bufsize < 99 ||
3874 old_mode[-1] != ':' ||
3875 new_mode[-1] != ' ' ||
3876 old_rev[-1] != ' ' ||
3877 new_rev[-1] != ' ' ||
3878 status[-1] != ' ')
3879 return FALSE;
3881 file->status = *status;
3883 string_copy_rev(file->old.rev, old_rev);
3884 string_copy_rev(file->new.rev, new_rev);
3886 file->old.mode = strtoul(old_mode, NULL, 8);
3887 file->new.mode = strtoul(new_mode, NULL, 8);
3889 file->old.name[0] = file->new.name[0] = 0;
3891 return TRUE;
3892 }
3894 static bool
3895 status_run(struct view *view, const char cmd[], char status, enum line_type type)
3896 {
3897 struct status *file = NULL;
3898 struct status *unmerged = NULL;
3899 char buf[SIZEOF_STR * 4];
3900 size_t bufsize = 0;
3901 FILE *pipe;
3903 pipe = popen(cmd, "r");
3904 if (!pipe)
3905 return FALSE;
3907 add_line_data(view, NULL, type);
3909 while (!feof(pipe) && !ferror(pipe)) {
3910 char *sep;
3911 size_t readsize;
3913 readsize = fread(buf + bufsize, 1, sizeof(buf) - bufsize, pipe);
3914 if (!readsize)
3915 break;
3916 bufsize += readsize;
3918 /* Process while we have NUL chars. */
3919 while ((sep = memchr(buf, 0, bufsize))) {
3920 size_t sepsize = sep - buf + 1;
3922 if (!file) {
3923 if (!realloc_lines(view, view->line_size + 1))
3924 goto error_out;
3926 file = calloc(1, sizeof(*file));
3927 if (!file)
3928 goto error_out;
3930 add_line_data(view, file, type);
3931 }
3933 /* Parse diff info part. */
3934 if (status) {
3935 file->status = status;
3936 if (status == 'A')
3937 string_copy(file->old.rev, NULL_ID);
3939 } else if (!file->status) {
3940 if (!status_get_diff(file, buf, sepsize))
3941 goto error_out;
3943 bufsize -= sepsize;
3944 memmove(buf, sep + 1, bufsize);
3946 sep = memchr(buf, 0, bufsize);
3947 if (!sep)
3948 break;
3949 sepsize = sep - buf + 1;
3951 /* Collapse all 'M'odified entries that
3952 * follow a associated 'U'nmerged entry.
3953 */
3954 if (file->status == 'U') {
3955 unmerged = file;
3957 } else if (unmerged) {
3958 int collapse = !strcmp(buf, unmerged->new.name);
3960 unmerged = NULL;
3961 if (collapse) {
3962 free(file);
3963 view->lines--;
3964 continue;
3965 }
3966 }
3967 }
3969 /* Grab the old name for rename/copy. */
3970 if (!*file->old.name &&
3971 (file->status == 'R' || file->status == 'C')) {
3972 sepsize = sep - buf + 1;
3973 string_ncopy(file->old.name, buf, sepsize);
3974 bufsize -= sepsize;
3975 memmove(buf, sep + 1, bufsize);
3977 sep = memchr(buf, 0, bufsize);
3978 if (!sep)
3979 break;
3980 sepsize = sep - buf + 1;
3981 }
3983 /* git-ls-files just delivers a NUL separated
3984 * list of file names similar to the second half
3985 * of the git-diff-* output. */
3986 string_ncopy(file->new.name, buf, sepsize);
3987 if (!*file->old.name)
3988 string_copy(file->old.name, file->new.name);
3989 bufsize -= sepsize;
3990 memmove(buf, sep + 1, bufsize);
3991 file = NULL;
3992 }
3993 }
3995 if (ferror(pipe)) {
3996 error_out:
3997 pclose(pipe);
3998 return FALSE;
3999 }
4001 if (!view->line[view->lines - 1].data)
4002 add_line_data(view, NULL, LINE_STAT_NONE);
4004 pclose(pipe);
4005 return TRUE;
4006 }
4008 /* Don't show unmerged entries in the staged section. */
4009 #define STATUS_DIFF_INDEX_CMD "git diff-index -z --diff-filter=ACDMRTXB --cached -M HEAD"
4010 #define STATUS_DIFF_FILES_CMD "git diff-files -z"
4011 #define STATUS_LIST_OTHER_CMD \
4012 "git ls-files -z --others --exclude-standard"
4013 #define STATUS_LIST_NO_HEAD_CMD \
4014 "git ls-files -z --cached --exclude-standard"
4016 #define STATUS_DIFF_INDEX_SHOW_CMD \
4017 "git diff-index --root --patch-with-stat -C -M --cached HEAD -- %s %s 2>/dev/null"
4019 #define STATUS_DIFF_FILES_SHOW_CMD \
4020 "git diff-files --root --patch-with-stat -C -M -- %s %s 2>/dev/null"
4022 #define STATUS_DIFF_NO_HEAD_SHOW_CMD \
4023 "git diff --no-color --patch-with-stat /dev/null %s 2>/dev/null"
4025 /* First parse staged info using git-diff-index(1), then parse unstaged
4026 * info using git-diff-files(1), and finally untracked files using
4027 * git-ls-files(1). */
4028 static bool
4029 status_open(struct view *view)
4030 {
4031 unsigned long prev_lineno = view->lineno;
4032 size_t i;
4034 for (i = 0; i < view->lines; i++)
4035 free(view->line[i].data);
4036 free(view->line);
4037 view->lines = view->line_alloc = view->line_size = view->lineno = 0;
4038 view->line = NULL;
4040 if (!realloc_lines(view, view->line_size + 7))
4041 return FALSE;
4043 add_line_data(view, NULL, LINE_STAT_HEAD);
4044 if (opt_no_head)
4045 string_copy(status_onbranch, "Initial commit");
4046 else if (!*opt_head)
4047 string_copy(status_onbranch, "Not currently on any branch");
4048 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4049 return FALSE;
4051 system("git update-index -q --refresh >/dev/null 2>/dev/null");
4053 if (opt_no_head) {
4054 if (!status_run(view, STATUS_LIST_NO_HEAD_CMD, 'A', LINE_STAT_STAGED))
4055 return FALSE;
4056 } else if (!status_run(view, STATUS_DIFF_INDEX_CMD, 0, LINE_STAT_STAGED)) {
4057 return FALSE;
4058 }
4060 if (!status_run(view, STATUS_DIFF_FILES_CMD, 0, LINE_STAT_UNSTAGED) ||
4061 !status_run(view, STATUS_LIST_OTHER_CMD, '?', LINE_STAT_UNTRACKED))
4062 return FALSE;
4064 /* If all went well restore the previous line number to stay in
4065 * the context or select a line with something that can be
4066 * updated. */
4067 if (prev_lineno >= view->lines)
4068 prev_lineno = view->lines - 1;
4069 while (prev_lineno < view->lines && !view->line[prev_lineno].data)
4070 prev_lineno++;
4071 while (prev_lineno > 0 && !view->line[prev_lineno].data)
4072 prev_lineno--;
4074 /* If the above fails, always skip the "On branch" line. */
4075 if (prev_lineno < view->lines)
4076 view->lineno = prev_lineno;
4077 else
4078 view->lineno = 1;
4080 if (view->lineno < view->offset)
4081 view->offset = view->lineno;
4082 else if (view->offset + view->height <= view->lineno)
4083 view->offset = view->lineno - view->height + 1;
4085 return TRUE;
4086 }
4088 static bool
4089 status_draw(struct view *view, struct line *line, unsigned int lineno)
4090 {
4091 struct status *status = line->data;
4092 enum line_type type;
4093 char *text;
4095 if (!status) {
4096 switch (line->type) {
4097 case LINE_STAT_STAGED:
4098 type = LINE_STAT_SECTION;
4099 text = "Changes to be committed:";
4100 break;
4102 case LINE_STAT_UNSTAGED:
4103 type = LINE_STAT_SECTION;
4104 text = "Changed but not updated:";
4105 break;
4107 case LINE_STAT_UNTRACKED:
4108 type = LINE_STAT_SECTION;
4109 text = "Untracked files:";
4110 break;
4112 case LINE_STAT_NONE:
4113 type = LINE_DEFAULT;
4114 text = " (no files)";
4115 break;
4117 case LINE_STAT_HEAD:
4118 type = LINE_STAT_HEAD;
4119 text = status_onbranch;
4120 break;
4122 default:
4123 return FALSE;
4124 }
4125 } else {
4126 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4128 buf[0] = status->status;
4129 if (draw_text(view, line->type, buf, TRUE))
4130 return TRUE;
4131 type = LINE_DEFAULT;
4132 text = status->new.name;
4133 }
4135 draw_text(view, type, text, TRUE);
4136 return TRUE;
4137 }
4139 static enum request
4140 status_enter(struct view *view, struct line *line)
4141 {
4142 struct status *status = line->data;
4143 char oldpath[SIZEOF_STR] = "";
4144 char newpath[SIZEOF_STR] = "";
4145 char *info;
4146 size_t cmdsize = 0;
4147 enum open_flags split;
4149 if (line->type == LINE_STAT_NONE ||
4150 (!status && line[1].type == LINE_STAT_NONE)) {
4151 report("No file to diff");
4152 return REQ_NONE;
4153 }
4155 if (status) {
4156 if (sq_quote(oldpath, 0, status->old.name) >= sizeof(oldpath))
4157 return REQ_QUIT;
4158 /* Diffs for unmerged entries are empty when pasing the
4159 * new path, so leave it empty. */
4160 if (status->status != 'U' &&
4161 sq_quote(newpath, 0, status->new.name) >= sizeof(newpath))
4162 return REQ_QUIT;
4163 }
4165 if (opt_cdup[0] &&
4166 line->type != LINE_STAT_UNTRACKED &&
4167 !string_format_from(opt_cmd, &cmdsize, "cd %s;", opt_cdup))
4168 return REQ_QUIT;
4170 switch (line->type) {
4171 case LINE_STAT_STAGED:
4172 if (opt_no_head) {
4173 if (!string_format_from(opt_cmd, &cmdsize,
4174 STATUS_DIFF_NO_HEAD_SHOW_CMD,
4175 newpath))
4176 return REQ_QUIT;
4177 } else {
4178 if (!string_format_from(opt_cmd, &cmdsize,
4179 STATUS_DIFF_INDEX_SHOW_CMD,
4180 oldpath, newpath))
4181 return REQ_QUIT;
4182 }
4184 if (status)
4185 info = "Staged changes to %s";
4186 else
4187 info = "Staged changes";
4188 break;
4190 case LINE_STAT_UNSTAGED:
4191 if (!string_format_from(opt_cmd, &cmdsize,
4192 STATUS_DIFF_FILES_SHOW_CMD, oldpath, newpath))
4193 return REQ_QUIT;
4194 if (status)
4195 info = "Unstaged changes to %s";
4196 else
4197 info = "Unstaged changes";
4198 break;
4200 case LINE_STAT_UNTRACKED:
4201 if (opt_pipe)
4202 return REQ_QUIT;
4204 if (!status) {
4205 report("No file to show");
4206 return REQ_NONE;
4207 }
4209 opt_pipe = fopen(status->new.name, "r");
4210 info = "Untracked file %s";
4211 break;
4213 case LINE_STAT_HEAD:
4214 return REQ_NONE;
4216 default:
4217 die("line type %d not handled in switch", line->type);
4218 }
4220 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4221 open_view(view, REQ_VIEW_STAGE, OPEN_RELOAD | split);
4222 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4223 if (status) {
4224 stage_status = *status;
4225 } else {
4226 memset(&stage_status, 0, sizeof(stage_status));
4227 }
4229 stage_line_type = line->type;
4230 stage_chunks = 0;
4231 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4232 }
4234 return REQ_NONE;
4235 }
4237 static bool
4238 status_exists(struct status *status, enum line_type type)
4239 {
4240 struct view *view = VIEW(REQ_VIEW_STATUS);
4241 struct line *line;
4243 for (line = view->line; line < view->line + view->lines; line++) {
4244 struct status *pos = line->data;
4246 if (line->type == type && pos &&
4247 !strcmp(status->new.name, pos->new.name))
4248 return TRUE;
4249 }
4251 return FALSE;
4252 }
4255 static FILE *
4256 status_update_prepare(enum line_type type)
4257 {
4258 char cmd[SIZEOF_STR];
4259 size_t cmdsize = 0;
4261 if (opt_cdup[0] &&
4262 type != LINE_STAT_UNTRACKED &&
4263 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4264 return NULL;
4266 switch (type) {
4267 case LINE_STAT_STAGED:
4268 string_add(cmd, cmdsize, "git update-index -z --index-info");
4269 break;
4271 case LINE_STAT_UNSTAGED:
4272 case LINE_STAT_UNTRACKED:
4273 string_add(cmd, cmdsize, "git update-index -z --add --remove --stdin");
4274 break;
4276 default:
4277 die("line type %d not handled in switch", type);
4278 }
4280 return popen(cmd, "w");
4281 }
4283 static bool
4284 status_update_write(FILE *pipe, struct status *status, enum line_type type)
4285 {
4286 char buf[SIZEOF_STR];
4287 size_t bufsize = 0;
4288 size_t written = 0;
4290 switch (type) {
4291 case LINE_STAT_STAGED:
4292 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4293 status->old.mode,
4294 status->old.rev,
4295 status->old.name, 0))
4296 return FALSE;
4297 break;
4299 case LINE_STAT_UNSTAGED:
4300 case LINE_STAT_UNTRACKED:
4301 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4302 return FALSE;
4303 break;
4305 default:
4306 die("line type %d not handled in switch", type);
4307 }
4309 while (!ferror(pipe) && written < bufsize) {
4310 written += fwrite(buf + written, 1, bufsize - written, pipe);
4311 }
4313 return written == bufsize;
4314 }
4316 static bool
4317 status_update_file(struct status *status, enum line_type type)
4318 {
4319 FILE *pipe = status_update_prepare(type);
4320 bool result;
4322 if (!pipe)
4323 return FALSE;
4325 result = status_update_write(pipe, status, type);
4326 pclose(pipe);
4327 return result;
4328 }
4330 static bool
4331 status_update_files(struct view *view, struct line *line)
4332 {
4333 FILE *pipe = status_update_prepare(line->type);
4334 bool result = TRUE;
4335 struct line *pos = view->line + view->lines;
4336 int files = 0;
4337 int file, done;
4339 if (!pipe)
4340 return FALSE;
4342 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4343 files++;
4345 for (file = 0, done = 0; result && file < files; line++, file++) {
4346 int almost_done = file * 100 / files;
4348 if (almost_done > done) {
4349 done = almost_done;
4350 string_format(view->ref, "updating file %u of %u (%d%% done)",
4351 file, files, done);
4352 update_view_title(view);
4353 }
4354 result = status_update_write(pipe, line->data, line->type);
4355 }
4357 pclose(pipe);
4358 return result;
4359 }
4361 static bool
4362 status_update(struct view *view)
4363 {
4364 struct line *line = &view->line[view->lineno];
4366 assert(view->lines);
4368 if (!line->data) {
4369 /* This should work even for the "On branch" line. */
4370 if (line < view->line + view->lines && !line[1].data) {
4371 report("Nothing to update");
4372 return FALSE;
4373 }
4375 if (!status_update_files(view, line + 1)) {
4376 report("Failed to update file status");
4377 return FALSE;
4378 }
4380 } else if (!status_update_file(line->data, line->type)) {
4381 report("Failed to update file status");
4382 return FALSE;
4383 }
4385 return TRUE;
4386 }
4388 static bool
4389 status_checkout(struct status *status, enum line_type type, bool has_none)
4390 {
4391 if (!status || type != LINE_STAT_UNSTAGED) {
4392 if (type == LINE_STAT_STAGED) {
4393 report("Cannot checkout staged files");
4394 } else if (type == LINE_STAT_UNTRACKED) {
4395 report("Cannot checkout untracked files");
4396 } else if (has_none) {
4397 report("Nothing to checkout");
4398 } else {
4399 report("Cannot checkout multiple files");
4400 }
4401 return FALSE;
4403 } else {
4404 char cmd[SIZEOF_STR];
4405 char file_sq[SIZEOF_STR];
4407 if (sq_quote(file_sq, 0, status->old.name) >= sizeof(file_sq) ||
4408 !string_format(cmd, "git checkout %s%s", opt_cdup, file_sq))
4409 return FALSE;
4411 return run_confirm(cmd, "Are you sure you want to overwrite any changes?");
4412 }
4413 }
4415 static enum request
4416 status_request(struct view *view, enum request request, struct line *line)
4417 {
4418 struct status *status = line->data;
4420 switch (request) {
4421 case REQ_STATUS_UPDATE:
4422 if (!status_update(view))
4423 return REQ_NONE;
4424 break;
4426 case REQ_STATUS_CHECKOUT:
4427 if (!status_checkout(status, line->type, status_has_none(view, line)))
4428 return REQ_NONE;
4429 break;
4431 case REQ_STATUS_MERGE:
4432 if (!status || status->status != 'U') {
4433 report("Merging only possible for files with unmerged status ('U').");
4434 return REQ_NONE;
4435 }
4436 open_mergetool(status->new.name);
4437 break;
4439 case REQ_EDIT:
4440 if (!status)
4441 return request;
4443 open_editor(status->status != '?', status->new.name);
4444 break;
4446 case REQ_VIEW_BLAME:
4447 if (status) {
4448 string_copy(opt_file, status->new.name);
4449 opt_ref[0] = 0;
4450 }
4451 return request;
4453 case REQ_ENTER:
4454 /* After returning the status view has been split to
4455 * show the stage view. No further reloading is
4456 * necessary. */
4457 status_enter(view, line);
4458 return REQ_NONE;
4460 case REQ_REFRESH:
4461 /* Simply reload the view. */
4462 break;
4464 default:
4465 return request;
4466 }
4468 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4470 return REQ_NONE;
4471 }
4473 static void
4474 status_select(struct view *view, struct line *line)
4475 {
4476 struct status *status = line->data;
4477 char file[SIZEOF_STR] = "all files";
4478 char *text;
4479 char *key;
4481 if (status && !string_format(file, "'%s'", status->new.name))
4482 return;
4484 if (!status && line[1].type == LINE_STAT_NONE)
4485 line++;
4487 switch (line->type) {
4488 case LINE_STAT_STAGED:
4489 text = "Press %s to unstage %s for commit";
4490 break;
4492 case LINE_STAT_UNSTAGED:
4493 text = "Press %s to stage %s for commit";
4494 break;
4496 case LINE_STAT_UNTRACKED:
4497 text = "Press %s to stage %s for addition";
4498 break;
4500 case LINE_STAT_HEAD:
4501 case LINE_STAT_NONE:
4502 text = "Nothing to update";
4503 break;
4505 default:
4506 die("line type %d not handled in switch", line->type);
4507 }
4509 if (status && status->status == 'U') {
4510 text = "Press %s to resolve conflict in %s";
4511 key = get_key(REQ_STATUS_MERGE);
4513 } else {
4514 key = get_key(REQ_STATUS_UPDATE);
4515 }
4517 string_format(view->ref, text, key, file);
4518 }
4520 static bool
4521 status_grep(struct view *view, struct line *line)
4522 {
4523 struct status *status = line->data;
4524 enum { S_STATUS, S_NAME, S_END } state;
4525 char buf[2] = "?";
4526 regmatch_t pmatch;
4528 if (!status)
4529 return FALSE;
4531 for (state = S_STATUS; state < S_END; state++) {
4532 char *text;
4534 switch (state) {
4535 case S_NAME: text = status->new.name; break;
4536 case S_STATUS:
4537 buf[0] = status->status;
4538 text = buf;
4539 break;
4541 default:
4542 return FALSE;
4543 }
4545 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4546 return TRUE;
4547 }
4549 return FALSE;
4550 }
4552 static struct view_ops status_ops = {
4553 "file",
4554 status_open,
4555 NULL,
4556 status_draw,
4557 status_request,
4558 status_grep,
4559 status_select,
4560 };
4563 static bool
4564 stage_diff_line(FILE *pipe, struct line *line)
4565 {
4566 char *buf = line->data;
4567 size_t bufsize = strlen(buf);
4568 size_t written = 0;
4570 while (!ferror(pipe) && written < bufsize) {
4571 written += fwrite(buf + written, 1, bufsize - written, pipe);
4572 }
4574 fputc('\n', pipe);
4576 return written == bufsize;
4577 }
4579 static bool
4580 stage_diff_write(FILE *pipe, struct line *line, struct line *end)
4581 {
4582 while (line < end) {
4583 if (!stage_diff_line(pipe, line++))
4584 return FALSE;
4585 if (line->type == LINE_DIFF_CHUNK ||
4586 line->type == LINE_DIFF_HEADER)
4587 break;
4588 }
4590 return TRUE;
4591 }
4593 static struct line *
4594 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4595 {
4596 for (; view->line < line; line--)
4597 if (line->type == type)
4598 return line;
4600 return NULL;
4601 }
4603 static bool
4604 stage_update_chunk(struct view *view, struct line *chunk)
4605 {
4606 char cmd[SIZEOF_STR];
4607 size_t cmdsize = 0;
4608 struct line *diff_hdr;
4609 FILE *pipe;
4611 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4612 if (!diff_hdr)
4613 return FALSE;
4615 if (opt_cdup[0] &&
4616 !string_format_from(cmd, &cmdsize, "cd %s;", opt_cdup))
4617 return FALSE;
4619 if (!string_format_from(cmd, &cmdsize,
4620 "git apply --whitespace=nowarn --cached %s - && "
4621 "git update-index -q --unmerged --refresh 2>/dev/null",
4622 stage_line_type == LINE_STAT_STAGED ? "-R" : ""))
4623 return FALSE;
4625 pipe = popen(cmd, "w");
4626 if (!pipe)
4627 return FALSE;
4629 if (!stage_diff_write(pipe, diff_hdr, chunk) ||
4630 !stage_diff_write(pipe, chunk, view->line + view->lines))
4631 chunk = NULL;
4633 pclose(pipe);
4635 return chunk ? TRUE : FALSE;
4636 }
4638 static bool
4639 stage_update(struct view *view, struct line *line)
4640 {
4641 struct line *chunk = NULL;
4643 if (!opt_no_head && stage_line_type != LINE_STAT_UNTRACKED)
4644 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4646 if (chunk) {
4647 if (!stage_update_chunk(view, chunk)) {
4648 report("Failed to apply chunk");
4649 return FALSE;
4650 }
4652 } else if (!stage_status.status) {
4653 view = VIEW(REQ_VIEW_STATUS);
4655 for (line = view->line; line < view->line + view->lines; line++)
4656 if (line->type == stage_line_type)
4657 break;
4659 if (!status_update_files(view, line + 1)) {
4660 report("Failed to update files");
4661 return FALSE;
4662 }
4664 } else if (!status_update_file(&stage_status, stage_line_type)) {
4665 report("Failed to update file");
4666 return FALSE;
4667 }
4669 return TRUE;
4670 }
4672 static void
4673 stage_next(struct view *view, struct line *line)
4674 {
4675 int i;
4677 if (!stage_chunks) {
4678 static size_t alloc = 0;
4679 int *tmp;
4681 for (line = view->line; line < view->line + view->lines; line++) {
4682 if (line->type != LINE_DIFF_CHUNK)
4683 continue;
4685 tmp = realloc_items(stage_chunk, &alloc,
4686 stage_chunks, sizeof(*tmp));
4687 if (!tmp) {
4688 report("Allocation failure");
4689 return;
4690 }
4692 stage_chunk = tmp;
4693 stage_chunk[stage_chunks++] = line - view->line;
4694 }
4695 }
4697 for (i = 0; i < stage_chunks; i++) {
4698 if (stage_chunk[i] > view->lineno) {
4699 do_scroll_view(view, stage_chunk[i] - view->lineno);
4700 report("Chunk %d of %d", i + 1, stage_chunks);
4701 return;
4702 }
4703 }
4705 report("No next chunk found");
4706 }
4708 static enum request
4709 stage_request(struct view *view, enum request request, struct line *line)
4710 {
4711 switch (request) {
4712 case REQ_STATUS_UPDATE:
4713 if (!stage_update(view, line))
4714 return REQ_NONE;
4715 break;
4717 case REQ_STATUS_CHECKOUT:
4718 if (!status_checkout(stage_status.status ? &stage_status : NULL,
4719 stage_line_type, FALSE))
4720 return REQ_NONE;
4721 break;
4723 case REQ_STAGE_NEXT:
4724 if (stage_line_type == LINE_STAT_UNTRACKED) {
4725 report("File is untracked; press %s to add",
4726 get_key(REQ_STATUS_UPDATE));
4727 return REQ_NONE;
4728 }
4729 stage_next(view, line);
4730 return REQ_NONE;
4732 case REQ_EDIT:
4733 if (!stage_status.new.name[0])
4734 return request;
4736 open_editor(stage_status.status != '?', stage_status.new.name);
4737 break;
4739 case REQ_REFRESH:
4740 /* Reload everything ... */
4741 break;
4743 case REQ_VIEW_BLAME:
4744 if (stage_status.new.name[0]) {
4745 string_copy(opt_file, stage_status.new.name);
4746 opt_ref[0] = 0;
4747 }
4748 return request;
4750 case REQ_ENTER:
4751 return pager_request(view, request, line);
4753 default:
4754 return request;
4755 }
4757 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
4759 /* Check whether the staged entry still exists, and close the
4760 * stage view if it doesn't. */
4761 if (!status_exists(&stage_status, stage_line_type))
4762 return REQ_VIEW_CLOSE;
4764 if (stage_line_type == LINE_STAT_UNTRACKED)
4765 opt_pipe = fopen(stage_status.new.name, "r");
4766 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
4768 return REQ_NONE;
4769 }
4771 static struct view_ops stage_ops = {
4772 "line",
4773 NULL,
4774 pager_read,
4775 pager_draw,
4776 stage_request,
4777 pager_grep,
4778 pager_select,
4779 };
4782 /*
4783 * Revision graph
4784 */
4786 struct commit {
4787 char id[SIZEOF_REV]; /* SHA1 ID. */
4788 char title[128]; /* First line of the commit message. */
4789 char author[75]; /* Author of the commit. */
4790 struct tm time; /* Date from the author ident. */
4791 struct ref **refs; /* Repository references. */
4792 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
4793 size_t graph_size; /* The width of the graph array. */
4794 bool has_parents; /* Rewritten --parents seen. */
4795 };
4797 /* Size of rev graph with no "padding" columns */
4798 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
4800 struct rev_graph {
4801 struct rev_graph *prev, *next, *parents;
4802 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
4803 size_t size;
4804 struct commit *commit;
4805 size_t pos;
4806 unsigned int boundary:1;
4807 };
4809 /* Parents of the commit being visualized. */
4810 static struct rev_graph graph_parents[4];
4812 /* The current stack of revisions on the graph. */
4813 static struct rev_graph graph_stacks[4] = {
4814 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
4815 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
4816 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
4817 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
4818 };
4820 static inline bool
4821 graph_parent_is_merge(struct rev_graph *graph)
4822 {
4823 return graph->parents->size > 1;
4824 }
4826 static inline void
4827 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
4828 {
4829 struct commit *commit = graph->commit;
4831 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
4832 commit->graph[commit->graph_size++] = symbol;
4833 }
4835 static void
4836 clear_rev_graph(struct rev_graph *graph)
4837 {
4838 graph->boundary = 0;
4839 graph->size = graph->pos = 0;
4840 graph->commit = NULL;
4841 memset(graph->parents, 0, sizeof(*graph->parents));
4842 }
4844 static void
4845 done_rev_graph(struct rev_graph *graph)
4846 {
4847 if (graph_parent_is_merge(graph) &&
4848 graph->pos < graph->size - 1 &&
4849 graph->next->size == graph->size + graph->parents->size - 1) {
4850 size_t i = graph->pos + graph->parents->size - 1;
4852 graph->commit->graph_size = i * 2;
4853 while (i < graph->next->size - 1) {
4854 append_to_rev_graph(graph, ' ');
4855 append_to_rev_graph(graph, '\\');
4856 i++;
4857 }
4858 }
4860 clear_rev_graph(graph);
4861 }
4863 static void
4864 push_rev_graph(struct rev_graph *graph, char *parent)
4865 {
4866 int i;
4868 /* "Collapse" duplicate parents lines.
4869 *
4870 * FIXME: This needs to also update update the drawn graph but
4871 * for now it just serves as a method for pruning graph lines. */
4872 for (i = 0; i < graph->size; i++)
4873 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
4874 return;
4876 if (graph->size < SIZEOF_REVITEMS) {
4877 string_copy_rev(graph->rev[graph->size++], parent);
4878 }
4879 }
4881 static chtype
4882 get_rev_graph_symbol(struct rev_graph *graph)
4883 {
4884 chtype symbol;
4886 if (graph->boundary)
4887 symbol = REVGRAPH_BOUND;
4888 else if (graph->parents->size == 0)
4889 symbol = REVGRAPH_INIT;
4890 else if (graph_parent_is_merge(graph))
4891 symbol = REVGRAPH_MERGE;
4892 else if (graph->pos >= graph->size)
4893 symbol = REVGRAPH_BRANCH;
4894 else
4895 symbol = REVGRAPH_COMMIT;
4897 return symbol;
4898 }
4900 static void
4901 draw_rev_graph(struct rev_graph *graph)
4902 {
4903 struct rev_filler {
4904 chtype separator, line;
4905 };
4906 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
4907 static struct rev_filler fillers[] = {
4908 { ' ', '|' },
4909 { '`', '.' },
4910 { '\'', ' ' },
4911 { '/', ' ' },
4912 };
4913 chtype symbol = get_rev_graph_symbol(graph);
4914 struct rev_filler *filler;
4915 size_t i;
4917 if (opt_line_graphics)
4918 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
4920 filler = &fillers[DEFAULT];
4922 for (i = 0; i < graph->pos; i++) {
4923 append_to_rev_graph(graph, filler->line);
4924 if (graph_parent_is_merge(graph->prev) &&
4925 graph->prev->pos == i)
4926 filler = &fillers[RSHARP];
4928 append_to_rev_graph(graph, filler->separator);
4929 }
4931 /* Place the symbol for this revision. */
4932 append_to_rev_graph(graph, symbol);
4934 if (graph->prev->size > graph->size)
4935 filler = &fillers[RDIAG];
4936 else
4937 filler = &fillers[DEFAULT];
4939 i++;
4941 for (; i < graph->size; i++) {
4942 append_to_rev_graph(graph, filler->separator);
4943 append_to_rev_graph(graph, filler->line);
4944 if (graph_parent_is_merge(graph->prev) &&
4945 i < graph->prev->pos + graph->parents->size)
4946 filler = &fillers[RSHARP];
4947 if (graph->prev->size > graph->size)
4948 filler = &fillers[LDIAG];
4949 }
4951 if (graph->prev->size > graph->size) {
4952 append_to_rev_graph(graph, filler->separator);
4953 if (filler->line != ' ')
4954 append_to_rev_graph(graph, filler->line);
4955 }
4956 }
4958 /* Prepare the next rev graph */
4959 static void
4960 prepare_rev_graph(struct rev_graph *graph)
4961 {
4962 size_t i;
4964 /* First, traverse all lines of revisions up to the active one. */
4965 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
4966 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
4967 break;
4969 push_rev_graph(graph->next, graph->rev[graph->pos]);
4970 }
4972 /* Interleave the new revision parent(s). */
4973 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
4974 push_rev_graph(graph->next, graph->parents->rev[i]);
4976 /* Lastly, put any remaining revisions. */
4977 for (i = graph->pos + 1; i < graph->size; i++)
4978 push_rev_graph(graph->next, graph->rev[i]);
4979 }
4981 static void
4982 update_rev_graph(struct rev_graph *graph)
4983 {
4984 /* If this is the finalizing update ... */
4985 if (graph->commit)
4986 prepare_rev_graph(graph);
4988 /* Graph visualization needs a one rev look-ahead,
4989 * so the first update doesn't visualize anything. */
4990 if (!graph->prev->commit)
4991 return;
4993 draw_rev_graph(graph->prev);
4994 done_rev_graph(graph->prev->prev);
4995 }
4998 /*
4999 * Main view backend
5000 */
5002 static bool
5003 main_draw(struct view *view, struct line *line, unsigned int lineno)
5004 {
5005 struct commit *commit = line->data;
5007 if (!*commit->author)
5008 return FALSE;
5010 if (opt_date && draw_date(view, &commit->time))
5011 return TRUE;
5013 if (opt_author &&
5014 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5015 return TRUE;
5017 if (opt_rev_graph && commit->graph_size &&
5018 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5019 return TRUE;
5021 if (opt_show_refs && commit->refs) {
5022 size_t i = 0;
5024 do {
5025 enum line_type type;
5027 if (commit->refs[i]->head)
5028 type = LINE_MAIN_HEAD;
5029 else if (commit->refs[i]->ltag)
5030 type = LINE_MAIN_LOCAL_TAG;
5031 else if (commit->refs[i]->tag)
5032 type = LINE_MAIN_TAG;
5033 else if (commit->refs[i]->tracked)
5034 type = LINE_MAIN_TRACKED;
5035 else if (commit->refs[i]->remote)
5036 type = LINE_MAIN_REMOTE;
5037 else
5038 type = LINE_MAIN_REF;
5040 if (draw_text(view, type, "[", TRUE) ||
5041 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5042 draw_text(view, type, "]", TRUE))
5043 return TRUE;
5045 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5046 return TRUE;
5047 } while (commit->refs[i++]->next);
5048 }
5050 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5051 return TRUE;
5052 }
5054 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5055 static bool
5056 main_read(struct view *view, char *line)
5057 {
5058 static struct rev_graph *graph = graph_stacks;
5059 enum line_type type;
5060 struct commit *commit;
5062 if (!line) {
5063 int i;
5065 if (!view->lines && !view->parent)
5066 die("No revisions match the given arguments.");
5067 if (view->lines > 0) {
5068 commit = view->line[view->lines - 1].data;
5069 if (!*commit->author) {
5070 view->lines--;
5071 free(commit);
5072 graph->commit = NULL;
5073 }
5074 }
5075 update_rev_graph(graph);
5077 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5078 clear_rev_graph(&graph_stacks[i]);
5079 return TRUE;
5080 }
5082 type = get_line_type(line);
5083 if (type == LINE_COMMIT) {
5084 commit = calloc(1, sizeof(struct commit));
5085 if (!commit)
5086 return FALSE;
5088 line += STRING_SIZE("commit ");
5089 if (*line == '-') {
5090 graph->boundary = 1;
5091 line++;
5092 }
5094 string_copy_rev(commit->id, line);
5095 commit->refs = get_refs(commit->id);
5096 graph->commit = commit;
5097 add_line_data(view, commit, LINE_MAIN_COMMIT);
5099 while ((line = strchr(line, ' '))) {
5100 line++;
5101 push_rev_graph(graph->parents, line);
5102 commit->has_parents = TRUE;
5103 }
5104 return TRUE;
5105 }
5107 if (!view->lines)
5108 return TRUE;
5109 commit = view->line[view->lines - 1].data;
5111 switch (type) {
5112 case LINE_PARENT:
5113 if (commit->has_parents)
5114 break;
5115 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5116 break;
5118 case LINE_AUTHOR:
5119 {
5120 /* Parse author lines where the name may be empty:
5121 * author <email@address.tld> 1138474660 +0100
5122 */
5123 char *ident = line + STRING_SIZE("author ");
5124 char *nameend = strchr(ident, '<');
5125 char *emailend = strchr(ident, '>');
5127 if (!nameend || !emailend)
5128 break;
5130 update_rev_graph(graph);
5131 graph = graph->next;
5133 *nameend = *emailend = 0;
5134 ident = chomp_string(ident);
5135 if (!*ident) {
5136 ident = chomp_string(nameend + 1);
5137 if (!*ident)
5138 ident = "Unknown";
5139 }
5141 string_ncopy(commit->author, ident, strlen(ident));
5143 /* Parse epoch and timezone */
5144 if (emailend[1] == ' ') {
5145 char *secs = emailend + 2;
5146 char *zone = strchr(secs, ' ');
5147 time_t time = (time_t) atol(secs);
5149 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5150 long tz;
5152 zone++;
5153 tz = ('0' - zone[1]) * 60 * 60 * 10;
5154 tz += ('0' - zone[2]) * 60 * 60;
5155 tz += ('0' - zone[3]) * 60;
5156 tz += ('0' - zone[4]) * 60;
5158 if (zone[0] == '-')
5159 tz = -tz;
5161 time -= tz;
5162 }
5164 gmtime_r(&time, &commit->time);
5165 }
5166 break;
5167 }
5168 default:
5169 /* Fill in the commit title if it has not already been set. */
5170 if (commit->title[0])
5171 break;
5173 /* Require titles to start with a non-space character at the
5174 * offset used by git log. */
5175 if (strncmp(line, " ", 4))
5176 break;
5177 line += 4;
5178 /* Well, if the title starts with a whitespace character,
5179 * try to be forgiving. Otherwise we end up with no title. */
5180 while (isspace(*line))
5181 line++;
5182 if (*line == '\0')
5183 break;
5184 /* FIXME: More graceful handling of titles; append "..." to
5185 * shortened titles, etc. */
5187 string_ncopy(commit->title, line, strlen(line));
5188 }
5190 return TRUE;
5191 }
5193 static enum request
5194 main_request(struct view *view, enum request request, struct line *line)
5195 {
5196 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5198 switch (request) {
5199 case REQ_ENTER:
5200 open_view(view, REQ_VIEW_DIFF, flags);
5201 break;
5202 case REQ_REFRESH:
5203 load_refs();
5204 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5205 break;
5206 default:
5207 return request;
5208 }
5210 return REQ_NONE;
5211 }
5213 static bool
5214 grep_refs(struct ref **refs, regex_t *regex)
5215 {
5216 regmatch_t pmatch;
5217 size_t i = 0;
5219 if (!refs)
5220 return FALSE;
5221 do {
5222 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5223 return TRUE;
5224 } while (refs[i++]->next);
5226 return FALSE;
5227 }
5229 static bool
5230 main_grep(struct view *view, struct line *line)
5231 {
5232 struct commit *commit = line->data;
5233 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5234 char buf[DATE_COLS + 1];
5235 regmatch_t pmatch;
5237 for (state = S_TITLE; state < S_END; state++) {
5238 char *text;
5240 switch (state) {
5241 case S_TITLE: text = commit->title; break;
5242 case S_AUTHOR:
5243 if (!opt_author)
5244 continue;
5245 text = commit->author;
5246 break;
5247 case S_DATE:
5248 if (!opt_date)
5249 continue;
5250 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5251 continue;
5252 text = buf;
5253 break;
5254 case S_REFS:
5255 if (!opt_show_refs)
5256 continue;
5257 if (grep_refs(commit->refs, view->regex) == TRUE)
5258 return TRUE;
5259 continue;
5260 default:
5261 return FALSE;
5262 }
5264 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5265 return TRUE;
5266 }
5268 return FALSE;
5269 }
5271 static void
5272 main_select(struct view *view, struct line *line)
5273 {
5274 struct commit *commit = line->data;
5276 string_copy_rev(view->ref, commit->id);
5277 string_copy_rev(ref_commit, view->ref);
5278 }
5280 static struct view_ops main_ops = {
5281 "commit",
5282 NULL,
5283 main_read,
5284 main_draw,
5285 main_request,
5286 main_grep,
5287 main_select,
5288 };
5291 /*
5292 * Unicode / UTF-8 handling
5293 *
5294 * NOTE: Much of the following code for dealing with unicode is derived from
5295 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5296 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5297 */
5299 /* I've (over)annotated a lot of code snippets because I am not entirely
5300 * confident that the approach taken by this small UTF-8 interface is correct.
5301 * --jonas */
5303 static inline int
5304 unicode_width(unsigned long c)
5305 {
5306 if (c >= 0x1100 &&
5307 (c <= 0x115f /* Hangul Jamo */
5308 || c == 0x2329
5309 || c == 0x232a
5310 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5311 /* CJK ... Yi */
5312 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5313 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5314 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5315 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5316 || (c >= 0xffe0 && c <= 0xffe6)
5317 || (c >= 0x20000 && c <= 0x2fffd)
5318 || (c >= 0x30000 && c <= 0x3fffd)))
5319 return 2;
5321 if (c == '\t')
5322 return opt_tab_size;
5324 return 1;
5325 }
5327 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5328 * Illegal bytes are set one. */
5329 static const unsigned char utf8_bytes[256] = {
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 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,
5333 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,
5334 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,
5335 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,
5336 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,
5337 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,
5338 };
5340 /* Decode UTF-8 multi-byte representation into a unicode character. */
5341 static inline unsigned long
5342 utf8_to_unicode(const char *string, size_t length)
5343 {
5344 unsigned long unicode;
5346 switch (length) {
5347 case 1:
5348 unicode = string[0];
5349 break;
5350 case 2:
5351 unicode = (string[0] & 0x1f) << 6;
5352 unicode += (string[1] & 0x3f);
5353 break;
5354 case 3:
5355 unicode = (string[0] & 0x0f) << 12;
5356 unicode += ((string[1] & 0x3f) << 6);
5357 unicode += (string[2] & 0x3f);
5358 break;
5359 case 4:
5360 unicode = (string[0] & 0x0f) << 18;
5361 unicode += ((string[1] & 0x3f) << 12);
5362 unicode += ((string[2] & 0x3f) << 6);
5363 unicode += (string[3] & 0x3f);
5364 break;
5365 case 5:
5366 unicode = (string[0] & 0x0f) << 24;
5367 unicode += ((string[1] & 0x3f) << 18);
5368 unicode += ((string[2] & 0x3f) << 12);
5369 unicode += ((string[3] & 0x3f) << 6);
5370 unicode += (string[4] & 0x3f);
5371 break;
5372 case 6:
5373 unicode = (string[0] & 0x01) << 30;
5374 unicode += ((string[1] & 0x3f) << 24);
5375 unicode += ((string[2] & 0x3f) << 18);
5376 unicode += ((string[3] & 0x3f) << 12);
5377 unicode += ((string[4] & 0x3f) << 6);
5378 unicode += (string[5] & 0x3f);
5379 break;
5380 default:
5381 die("Invalid unicode length");
5382 }
5384 /* Invalid characters could return the special 0xfffd value but NUL
5385 * should be just as good. */
5386 return unicode > 0xffff ? 0 : unicode;
5387 }
5389 /* Calculates how much of string can be shown within the given maximum width
5390 * and sets trimmed parameter to non-zero value if all of string could not be
5391 * shown. If the reserve flag is TRUE, it will reserve at least one
5392 * trailing character, which can be useful when drawing a delimiter.
5393 *
5394 * Returns the number of bytes to output from string to satisfy max_width. */
5395 static size_t
5396 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5397 {
5398 const char *start = string;
5399 const char *end = strchr(string, '\0');
5400 unsigned char last_bytes = 0;
5401 size_t last_ucwidth = 0;
5403 *width = 0;
5404 *trimmed = 0;
5406 while (string < end) {
5407 int c = *(unsigned char *) string;
5408 unsigned char bytes = utf8_bytes[c];
5409 size_t ucwidth;
5410 unsigned long unicode;
5412 if (string + bytes > end)
5413 break;
5415 /* Change representation to figure out whether
5416 * it is a single- or double-width character. */
5418 unicode = utf8_to_unicode(string, bytes);
5419 /* FIXME: Graceful handling of invalid unicode character. */
5420 if (!unicode)
5421 break;
5423 ucwidth = unicode_width(unicode);
5424 *width += ucwidth;
5425 if (*width > max_width) {
5426 *trimmed = 1;
5427 *width -= ucwidth;
5428 if (reserve && *width == max_width) {
5429 string -= last_bytes;
5430 *width -= last_ucwidth;
5431 }
5432 break;
5433 }
5435 string += bytes;
5436 last_bytes = bytes;
5437 last_ucwidth = ucwidth;
5438 }
5440 return string - start;
5441 }
5444 /*
5445 * Status management
5446 */
5448 /* Whether or not the curses interface has been initialized. */
5449 static bool cursed = FALSE;
5451 /* The status window is used for polling keystrokes. */
5452 static WINDOW *status_win;
5454 static bool status_empty = TRUE;
5456 /* Update status and title window. */
5457 static void
5458 report(const char *msg, ...)
5459 {
5460 struct view *view = display[current_view];
5462 if (input_mode)
5463 return;
5465 if (!view) {
5466 char buf[SIZEOF_STR];
5467 va_list args;
5469 va_start(args, msg);
5470 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5471 buf[sizeof(buf) - 1] = 0;
5472 buf[sizeof(buf) - 2] = '.';
5473 buf[sizeof(buf) - 3] = '.';
5474 buf[sizeof(buf) - 4] = '.';
5475 }
5476 va_end(args);
5477 die("%s", buf);
5478 }
5480 if (!status_empty || *msg) {
5481 va_list args;
5483 va_start(args, msg);
5485 wmove(status_win, 0, 0);
5486 if (*msg) {
5487 vwprintw(status_win, msg, args);
5488 status_empty = FALSE;
5489 } else {
5490 status_empty = TRUE;
5491 }
5492 wclrtoeol(status_win);
5493 wrefresh(status_win);
5495 va_end(args);
5496 }
5498 update_view_title(view);
5499 update_display_cursor(view);
5500 }
5502 /* Controls when nodelay should be in effect when polling user input. */
5503 static void
5504 set_nonblocking_input(bool loading)
5505 {
5506 static unsigned int loading_views;
5508 if ((loading == FALSE && loading_views-- == 1) ||
5509 (loading == TRUE && loading_views++ == 0))
5510 nodelay(status_win, loading);
5511 }
5513 static void
5514 init_display(void)
5515 {
5516 int x, y;
5518 /* Initialize the curses library */
5519 if (isatty(STDIN_FILENO)) {
5520 cursed = !!initscr();
5521 } else {
5522 /* Leave stdin and stdout alone when acting as a pager. */
5523 FILE *io = fopen("/dev/tty", "r+");
5525 if (!io)
5526 die("Failed to open /dev/tty");
5527 cursed = !!newterm(NULL, io, io);
5528 }
5530 if (!cursed)
5531 die("Failed to initialize curses");
5533 nonl(); /* Tell curses not to do NL->CR/NL on output */
5534 cbreak(); /* Take input chars one at a time, no wait for \n */
5535 noecho(); /* Don't echo input */
5536 leaveok(stdscr, TRUE);
5538 if (has_colors())
5539 init_colors();
5541 getmaxyx(stdscr, y, x);
5542 status_win = newwin(1, 0, y - 1, 0);
5543 if (!status_win)
5544 die("Failed to create status window");
5546 /* Enable keyboard mapping */
5547 keypad(status_win, TRUE);
5548 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5550 TABSIZE = opt_tab_size;
5551 if (opt_line_graphics) {
5552 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5553 }
5554 }
5556 static bool
5557 prompt_yesno(const char *prompt)
5558 {
5559 enum { WAIT, STOP, CANCEL } status = WAIT;
5560 bool answer = FALSE;
5562 while (status == WAIT) {
5563 struct view *view;
5564 int i, key;
5566 input_mode = TRUE;
5568 foreach_view (view, i)
5569 update_view(view);
5571 input_mode = FALSE;
5573 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
5574 wclrtoeol(status_win);
5576 /* Refresh, accept single keystroke of input */
5577 key = wgetch(status_win);
5578 switch (key) {
5579 case ERR:
5580 break;
5582 case 'y':
5583 case 'Y':
5584 answer = TRUE;
5585 status = STOP;
5586 break;
5588 case KEY_ESC:
5589 case KEY_RETURN:
5590 case KEY_ENTER:
5591 case KEY_BACKSPACE:
5592 case 'n':
5593 case 'N':
5594 case '\n':
5595 default:
5596 answer = FALSE;
5597 status = CANCEL;
5598 }
5599 }
5601 /* Clear the status window */
5602 status_empty = FALSE;
5603 report("");
5605 return answer;
5606 }
5608 static char *
5609 read_prompt(const char *prompt)
5610 {
5611 enum { READING, STOP, CANCEL } status = READING;
5612 static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
5613 int pos = 0;
5615 while (status == READING) {
5616 struct view *view;
5617 int i, key;
5619 input_mode = TRUE;
5621 foreach_view (view, i)
5622 update_view(view);
5624 input_mode = FALSE;
5626 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5627 wclrtoeol(status_win);
5629 /* Refresh, accept single keystroke of input */
5630 key = wgetch(status_win);
5631 switch (key) {
5632 case KEY_RETURN:
5633 case KEY_ENTER:
5634 case '\n':
5635 status = pos ? STOP : CANCEL;
5636 break;
5638 case KEY_BACKSPACE:
5639 if (pos > 0)
5640 pos--;
5641 else
5642 status = CANCEL;
5643 break;
5645 case KEY_ESC:
5646 status = CANCEL;
5647 break;
5649 case ERR:
5650 break;
5652 default:
5653 if (pos >= sizeof(buf)) {
5654 report("Input string too long");
5655 return NULL;
5656 }
5658 if (isprint(key))
5659 buf[pos++] = (char) key;
5660 }
5661 }
5663 /* Clear the status window */
5664 status_empty = FALSE;
5665 report("");
5667 if (status == CANCEL)
5668 return NULL;
5670 buf[pos++] = 0;
5672 return buf;
5673 }
5675 /*
5676 * Repository references
5677 */
5679 static struct ref *refs = NULL;
5680 static size_t refs_alloc = 0;
5681 static size_t refs_size = 0;
5683 /* Id <-> ref store */
5684 static struct ref ***id_refs = NULL;
5685 static size_t id_refs_alloc = 0;
5686 static size_t id_refs_size = 0;
5688 static struct ref **
5689 get_refs(char *id)
5690 {
5691 struct ref ***tmp_id_refs;
5692 struct ref **ref_list = NULL;
5693 size_t ref_list_alloc = 0;
5694 size_t ref_list_size = 0;
5695 size_t i;
5697 for (i = 0; i < id_refs_size; i++)
5698 if (!strcmp(id, id_refs[i][0]->id))
5699 return id_refs[i];
5701 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
5702 sizeof(*id_refs));
5703 if (!tmp_id_refs)
5704 return NULL;
5706 id_refs = tmp_id_refs;
5708 for (i = 0; i < refs_size; i++) {
5709 struct ref **tmp;
5711 if (strcmp(id, refs[i].id))
5712 continue;
5714 tmp = realloc_items(ref_list, &ref_list_alloc,
5715 ref_list_size + 1, sizeof(*ref_list));
5716 if (!tmp) {
5717 if (ref_list)
5718 free(ref_list);
5719 return NULL;
5720 }
5722 ref_list = tmp;
5723 if (ref_list_size > 0)
5724 ref_list[ref_list_size - 1]->next = 1;
5725 ref_list[ref_list_size] = &refs[i];
5727 /* XXX: The properties of the commit chains ensures that we can
5728 * safely modify the shared ref. The repo references will
5729 * always be similar for the same id. */
5730 ref_list[ref_list_size]->next = 0;
5731 ref_list_size++;
5732 }
5734 if (ref_list)
5735 id_refs[id_refs_size++] = ref_list;
5737 return ref_list;
5738 }
5740 static int
5741 read_ref(char *id, size_t idlen, char *name, size_t namelen)
5742 {
5743 struct ref *ref;
5744 bool tag = FALSE;
5745 bool ltag = FALSE;
5746 bool remote = FALSE;
5747 bool tracked = FALSE;
5748 bool check_replace = FALSE;
5749 bool head = FALSE;
5751 if (!strncmp(name, "refs/tags/", STRING_SIZE("refs/tags/"))) {
5752 if (!strcmp(name + namelen - 3, "^{}")) {
5753 namelen -= 3;
5754 name[namelen] = 0;
5755 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
5756 check_replace = TRUE;
5757 } else {
5758 ltag = TRUE;
5759 }
5761 tag = TRUE;
5762 namelen -= STRING_SIZE("refs/tags/");
5763 name += STRING_SIZE("refs/tags/");
5765 } else if (!strncmp(name, "refs/remotes/", STRING_SIZE("refs/remotes/"))) {
5766 remote = TRUE;
5767 namelen -= STRING_SIZE("refs/remotes/");
5768 name += STRING_SIZE("refs/remotes/");
5769 tracked = !strcmp(opt_remote, name);
5771 } else if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5772 namelen -= STRING_SIZE("refs/heads/");
5773 name += STRING_SIZE("refs/heads/");
5774 head = !strncmp(opt_head, name, namelen);
5776 } else if (!strcmp(name, "HEAD")) {
5777 opt_no_head = FALSE;
5778 return OK;
5779 }
5781 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
5782 /* it's an annotated tag, replace the previous sha1 with the
5783 * resolved commit id; relies on the fact git-ls-remote lists
5784 * the commit id of an annotated tag right beofre the commit id
5785 * it points to. */
5786 refs[refs_size - 1].ltag = ltag;
5787 string_copy_rev(refs[refs_size - 1].id, id);
5789 return OK;
5790 }
5791 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
5792 if (!refs)
5793 return ERR;
5795 ref = &refs[refs_size++];
5796 ref->name = malloc(namelen + 1);
5797 if (!ref->name)
5798 return ERR;
5800 strncpy(ref->name, name, namelen);
5801 ref->name[namelen] = 0;
5802 ref->head = head;
5803 ref->tag = tag;
5804 ref->ltag = ltag;
5805 ref->remote = remote;
5806 ref->tracked = tracked;
5807 string_copy_rev(ref->id, id);
5809 return OK;
5810 }
5812 static int
5813 load_refs(void)
5814 {
5815 const char *cmd_env = getenv("TIG_LS_REMOTE");
5816 const char *cmd = cmd_env && *cmd_env ? cmd_env : TIG_LS_REMOTE;
5818 if (!*opt_git_dir)
5819 return OK;
5821 while (refs_size > 0)
5822 free(refs[--refs_size].name);
5823 while (id_refs_size > 0)
5824 free(id_refs[--id_refs_size]);
5826 return read_properties(popen(cmd, "r"), "\t", read_ref);
5827 }
5829 static int
5830 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
5831 {
5832 if (!strcmp(name, "i18n.commitencoding"))
5833 string_ncopy(opt_encoding, value, valuelen);
5835 if (!strcmp(name, "core.editor"))
5836 string_ncopy(opt_editor, value, valuelen);
5838 /* branch.<head>.remote */
5839 if (*opt_head &&
5840 !strncmp(name, "branch.", 7) &&
5841 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5842 !strcmp(name + 7 + strlen(opt_head), ".remote"))
5843 string_ncopy(opt_remote, value, valuelen);
5845 if (*opt_head && *opt_remote &&
5846 !strncmp(name, "branch.", 7) &&
5847 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
5848 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
5849 size_t from = strlen(opt_remote);
5851 if (!strncmp(value, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5852 value += STRING_SIZE("refs/heads/");
5853 valuelen -= STRING_SIZE("refs/heads/");
5854 }
5856 if (!string_format_from(opt_remote, &from, "/%s", value))
5857 opt_remote[0] = 0;
5858 }
5860 return OK;
5861 }
5863 static int
5864 load_git_config(void)
5865 {
5866 return read_properties(popen("git " GIT_CONFIG " --list", "r"),
5867 "=", read_repo_config_option);
5868 }
5870 static int
5871 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
5872 {
5873 if (!opt_git_dir[0]) {
5874 string_ncopy(opt_git_dir, name, namelen);
5876 } else if (opt_is_inside_work_tree == -1) {
5877 /* This can be 3 different values depending on the
5878 * version of git being used. If git-rev-parse does not
5879 * understand --is-inside-work-tree it will simply echo
5880 * the option else either "true" or "false" is printed.
5881 * Default to true for the unknown case. */
5882 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
5884 } else if (opt_cdup[0] == ' ') {
5885 string_ncopy(opt_cdup, name, namelen);
5886 } else {
5887 if (!strncmp(name, "refs/heads/", STRING_SIZE("refs/heads/"))) {
5888 namelen -= STRING_SIZE("refs/heads/");
5889 name += STRING_SIZE("refs/heads/");
5890 string_ncopy(opt_head, name, namelen);
5891 }
5892 }
5894 return OK;
5895 }
5897 static int
5898 load_repo_info(void)
5899 {
5900 int result;
5901 FILE *pipe = popen("(git rev-parse --git-dir --is-inside-work-tree "
5902 " --show-cdup; git symbolic-ref HEAD) 2>/dev/null", "r");
5904 /* XXX: The line outputted by "--show-cdup" can be empty so
5905 * initialize it to something invalid to make it possible to
5906 * detect whether it has been set or not. */
5907 opt_cdup[0] = ' ';
5909 result = read_properties(pipe, "=", read_repo_info);
5910 if (opt_cdup[0] == ' ')
5911 opt_cdup[0] = 0;
5913 return result;
5914 }
5916 static int
5917 read_properties(FILE *pipe, const char *separators,
5918 int (*read_property)(char *, size_t, char *, size_t))
5919 {
5920 char buffer[BUFSIZ];
5921 char *name;
5922 int state = OK;
5924 if (!pipe)
5925 return ERR;
5927 while (state == OK && (name = fgets(buffer, sizeof(buffer), pipe))) {
5928 char *value;
5929 size_t namelen;
5930 size_t valuelen;
5932 name = chomp_string(name);
5933 namelen = strcspn(name, separators);
5935 if (name[namelen]) {
5936 name[namelen] = 0;
5937 value = chomp_string(name + namelen + 1);
5938 valuelen = strlen(value);
5940 } else {
5941 value = "";
5942 valuelen = 0;
5943 }
5945 state = read_property(name, namelen, value, valuelen);
5946 }
5948 if (state != ERR && ferror(pipe))
5949 state = ERR;
5951 pclose(pipe);
5953 return state;
5954 }
5957 /*
5958 * Main
5959 */
5961 static void __NORETURN
5962 quit(int sig)
5963 {
5964 /* XXX: Restore tty modes and let the OS cleanup the rest! */
5965 if (cursed)
5966 endwin();
5967 exit(0);
5968 }
5970 static void __NORETURN
5971 die(const char *err, ...)
5972 {
5973 va_list args;
5975 endwin();
5977 va_start(args, err);
5978 fputs("tig: ", stderr);
5979 vfprintf(stderr, err, args);
5980 fputs("\n", stderr);
5981 va_end(args);
5983 exit(1);
5984 }
5986 static void
5987 warn(const char *msg, ...)
5988 {
5989 va_list args;
5991 va_start(args, msg);
5992 fputs("tig warning: ", stderr);
5993 vfprintf(stderr, msg, args);
5994 fputs("\n", stderr);
5995 va_end(args);
5996 }
5998 int
5999 main(int argc, char *argv[])
6000 {
6001 struct view *view;
6002 enum request request;
6003 size_t i;
6005 signal(SIGINT, quit);
6007 if (setlocale(LC_ALL, "")) {
6008 char *codeset = nl_langinfo(CODESET);
6010 string_ncopy(opt_codeset, codeset, strlen(codeset));
6011 }
6013 if (load_repo_info() == ERR)
6014 die("Failed to load repo info.");
6016 if (load_options() == ERR)
6017 die("Failed to load user config.");
6019 if (load_git_config() == ERR)
6020 die("Failed to load repo config.");
6022 request = parse_options(argc, argv);
6023 if (request == REQ_NONE)
6024 return 0;
6026 /* Require a git repository unless when running in pager mode. */
6027 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6028 die("Not a git repository");
6030 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6031 opt_utf8 = FALSE;
6033 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6034 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6035 if (opt_iconv == ICONV_NONE)
6036 die("Failed to initialize character set conversion");
6037 }
6039 if (load_refs() == ERR)
6040 die("Failed to load refs.");
6042 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
6043 view->cmd_env = getenv(view->cmd_env);
6045 init_display();
6047 while (view_driver(display[current_view], request)) {
6048 int key;
6049 int i;
6051 foreach_view (view, i)
6052 update_view(view);
6054 /* Refresh, accept single keystroke of input */
6055 key = wgetch(status_win);
6057 /* wgetch() with nodelay() enabled returns ERR when there's no
6058 * input. */
6059 if (key == ERR) {
6060 request = REQ_NONE;
6061 continue;
6062 }
6064 request = get_keybinding(display[current_view]->keymap, key);
6066 /* Some low-level request handling. This keeps access to
6067 * status_win restricted. */
6068 switch (request) {
6069 case REQ_PROMPT:
6070 {
6071 char *cmd = read_prompt(":");
6073 if (cmd && string_format(opt_cmd, "git %s", cmd)) {
6074 if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
6075 request = REQ_VIEW_DIFF;
6076 } else {
6077 request = REQ_VIEW_PAGER;
6078 }
6080 /* Always reload^Wrerun commands from the prompt. */
6081 open_view(view, request, OPEN_RELOAD);
6082 }
6084 request = REQ_NONE;
6085 break;
6086 }
6087 case REQ_SEARCH:
6088 case REQ_SEARCH_BACK:
6089 {
6090 const char *prompt = request == REQ_SEARCH
6091 ? "/" : "?";
6092 char *search = read_prompt(prompt);
6094 if (search)
6095 string_ncopy(opt_search, search, strlen(search));
6096 else
6097 request = REQ_NONE;
6098 break;
6099 }
6100 case REQ_SCREEN_RESIZE:
6101 {
6102 int height, width;
6104 getmaxyx(stdscr, height, width);
6106 /* Resize the status view and let the view driver take
6107 * care of resizing the displayed views. */
6108 wresize(status_win, 1, width);
6109 mvwin(status_win, height - 1, 0);
6110 wrefresh(status_win);
6111 break;
6112 }
6113 default:
6114 break;
6115 }
6116 }
6118 quit(0);
6120 return 0;
6121 }