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1 /* Copyright (c) 2006-2009 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/wait.h>
36 #include <sys/stat.h>
37 #include <sys/select.h>
38 #include <unistd.h>
39 #include <time.h>
40 #include <fcntl.h>
42 #include <regex.h>
44 #include <locale.h>
45 #include <langinfo.h>
46 #include <iconv.h>
48 /* ncurses(3): Must be defined to have extended wide-character functions. */
49 #define _XOPEN_SOURCE_EXTENDED
51 #ifdef HAVE_NCURSESW_NCURSES_H
52 #include <ncursesw/ncurses.h>
53 #else
54 #ifdef HAVE_NCURSES_NCURSES_H
55 #include <ncurses/ncurses.h>
56 #else
57 #include <ncurses.h>
58 #endif
59 #endif
61 #if __GNUC__ >= 3
62 #define __NORETURN __attribute__((__noreturn__))
63 #else
64 #define __NORETURN
65 #endif
67 static void __NORETURN die(const char *err, ...);
68 static void warn(const char *msg, ...);
69 static void report(const char *msg, ...);
70 static void set_nonblocking_input(bool loading);
71 static size_t utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve);
72 static bool prompt_yesno(const char *prompt);
73 static int load_refs(void);
75 #define ABS(x) ((x) >= 0 ? (x) : -(x))
76 #define MIN(x, y) ((x) < (y) ? (x) : (y))
78 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
79 #define STRING_SIZE(x) (sizeof(x) - 1)
81 #define SIZEOF_STR 1024 /* Default string size. */
82 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
83 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
84 #define SIZEOF_ARG 32 /* Default argument array size. */
86 /* Revision graph */
88 #define REVGRAPH_INIT 'I'
89 #define REVGRAPH_MERGE 'M'
90 #define REVGRAPH_BRANCH '+'
91 #define REVGRAPH_COMMIT '*'
92 #define REVGRAPH_BOUND '^'
94 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
96 /* This color name can be used to refer to the default term colors. */
97 #define COLOR_DEFAULT (-1)
99 #define ICONV_NONE ((iconv_t) -1)
100 #ifndef ICONV_CONST
101 #define ICONV_CONST /* nothing */
102 #endif
104 /* The format and size of the date column in the main view. */
105 #define DATE_FORMAT "%Y-%m-%d %H:%M"
106 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
108 #define AUTHOR_COLS 20
109 #define ID_COLS 8
111 /* The default interval between line numbers. */
112 #define NUMBER_INTERVAL 5
114 #define TAB_SIZE 8
116 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
118 #define NULL_ID "0000000000000000000000000000000000000000"
120 #ifndef GIT_CONFIG
121 #define GIT_CONFIG "config"
122 #endif
124 /* Some ascii-shorthands fitted into the ncurses namespace. */
125 #define KEY_TAB '\t'
126 #define KEY_RETURN '\r'
127 #define KEY_ESC 27
130 struct ref {
131 char *name; /* Ref name; tag or head names are shortened. */
132 char id[SIZEOF_REV]; /* Commit SHA1 ID */
133 unsigned int head:1; /* Is it the current HEAD? */
134 unsigned int tag:1; /* Is it a tag? */
135 unsigned int ltag:1; /* If so, is the tag local? */
136 unsigned int remote:1; /* Is it a remote ref? */
137 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
138 unsigned int next:1; /* For ref lists: are there more refs? */
139 };
141 static struct ref **get_refs(const char *id);
143 enum format_flags {
144 FORMAT_ALL, /* Perform replacement in all arguments. */
145 FORMAT_DASH, /* Perform replacement up until "--". */
146 FORMAT_NONE /* No replacement should be performed. */
147 };
149 static bool format_argv(const char *dst[], const char *src[], enum format_flags flags);
151 struct int_map {
152 const char *name;
153 int namelen;
154 int value;
155 };
157 static int
158 set_from_int_map(struct int_map *map, size_t map_size,
159 int *value, const char *name, int namelen)
160 {
162 int i;
164 for (i = 0; i < map_size; i++)
165 if (namelen == map[i].namelen &&
166 !strncasecmp(name, map[i].name, namelen)) {
167 *value = map[i].value;
168 return OK;
169 }
171 return ERR;
172 }
175 /*
176 * String helpers
177 */
179 static inline void
180 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
181 {
182 if (srclen > dstlen - 1)
183 srclen = dstlen - 1;
185 strncpy(dst, src, srclen);
186 dst[srclen] = 0;
187 }
189 /* Shorthands for safely copying into a fixed buffer. */
191 #define string_copy(dst, src) \
192 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
194 #define string_ncopy(dst, src, srclen) \
195 string_ncopy_do(dst, sizeof(dst), src, srclen)
197 #define string_copy_rev(dst, src) \
198 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
200 #define string_add(dst, from, src) \
201 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
203 static char *
204 chomp_string(char *name)
205 {
206 int namelen;
208 while (isspace(*name))
209 name++;
211 namelen = strlen(name) - 1;
212 while (namelen > 0 && isspace(name[namelen]))
213 name[namelen--] = 0;
215 return name;
216 }
218 static bool
219 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
220 {
221 va_list args;
222 size_t pos = bufpos ? *bufpos : 0;
224 va_start(args, fmt);
225 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
226 va_end(args);
228 if (bufpos)
229 *bufpos = pos;
231 return pos >= bufsize ? FALSE : TRUE;
232 }
234 #define string_format(buf, fmt, args...) \
235 string_nformat(buf, sizeof(buf), NULL, fmt, args)
237 #define string_format_from(buf, from, fmt, args...) \
238 string_nformat(buf, sizeof(buf), from, fmt, args)
240 static int
241 string_enum_compare(const char *str1, const char *str2, int len)
242 {
243 size_t i;
245 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
247 /* Diff-Header == DIFF_HEADER */
248 for (i = 0; i < len; i++) {
249 if (toupper(str1[i]) == toupper(str2[i]))
250 continue;
252 if (string_enum_sep(str1[i]) &&
253 string_enum_sep(str2[i]))
254 continue;
256 return str1[i] - str2[i];
257 }
259 return 0;
260 }
262 #define prefixcmp(str1, str2) \
263 strncmp(str1, str2, STRING_SIZE(str2))
265 static inline int
266 suffixcmp(const char *str, int slen, const char *suffix)
267 {
268 size_t len = slen >= 0 ? slen : strlen(str);
269 size_t suffixlen = strlen(suffix);
271 return suffixlen < len ? strcmp(str + len - suffixlen, suffix) : -1;
272 }
275 static bool
276 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
277 {
278 int valuelen;
280 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
281 bool advance = cmd[valuelen] != 0;
283 cmd[valuelen] = 0;
284 argv[(*argc)++] = chomp_string(cmd);
285 cmd += valuelen + advance;
286 }
288 if (*argc < SIZEOF_ARG)
289 argv[*argc] = NULL;
290 return *argc < SIZEOF_ARG;
291 }
293 static void
294 argv_from_env(const char **argv, const char *name)
295 {
296 char *env = argv ? getenv(name) : NULL;
297 int argc = 0;
299 if (env && *env)
300 env = strdup(env);
301 if (env && !argv_from_string(argv, &argc, env))
302 die("Too many arguments in the `%s` environment variable", name);
303 }
306 /*
307 * Executing external commands.
308 */
310 enum io_type {
311 IO_FD, /* File descriptor based IO. */
312 IO_BG, /* Execute command in the background. */
313 IO_FG, /* Execute command with same std{in,out,err}. */
314 IO_RD, /* Read only fork+exec IO. */
315 IO_WR, /* Write only fork+exec IO. */
316 IO_AP, /* Append fork+exec output to file. */
317 };
319 struct io {
320 enum io_type type; /* The requested type of pipe. */
321 const char *dir; /* Directory from which to execute. */
322 pid_t pid; /* Pipe for reading or writing. */
323 int pipe; /* Pipe end for reading or writing. */
324 int error; /* Error status. */
325 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
326 char *buf; /* Read buffer. */
327 size_t bufalloc; /* Allocated buffer size. */
328 size_t bufsize; /* Buffer content size. */
329 char *bufpos; /* Current buffer position. */
330 unsigned int eof:1; /* Has end of file been reached. */
331 };
333 static void
334 reset_io(struct io *io)
335 {
336 io->pipe = -1;
337 io->pid = 0;
338 io->buf = io->bufpos = NULL;
339 io->bufalloc = io->bufsize = 0;
340 io->error = 0;
341 io->eof = 0;
342 }
344 static void
345 init_io(struct io *io, const char *dir, enum io_type type)
346 {
347 reset_io(io);
348 io->type = type;
349 io->dir = dir;
350 }
352 static bool
353 init_io_rd(struct io *io, const char *argv[], const char *dir,
354 enum format_flags flags)
355 {
356 init_io(io, dir, IO_RD);
357 return format_argv(io->argv, argv, flags);
358 }
360 static bool
361 io_open(struct io *io, const char *name)
362 {
363 init_io(io, NULL, IO_FD);
364 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
365 return io->pipe != -1;
366 }
368 static bool
369 kill_io(struct io *io)
370 {
371 return kill(io->pid, SIGKILL) != -1;
372 }
374 static bool
375 done_io(struct io *io)
376 {
377 pid_t pid = io->pid;
379 if (io->pipe != -1)
380 close(io->pipe);
381 free(io->buf);
382 reset_io(io);
384 while (pid > 0) {
385 int status;
386 pid_t waiting = waitpid(pid, &status, 0);
388 if (waiting < 0) {
389 if (errno == EINTR)
390 continue;
391 report("waitpid failed (%s)", strerror(errno));
392 return FALSE;
393 }
395 return waiting == pid &&
396 !WIFSIGNALED(status) &&
397 WIFEXITED(status) &&
398 !WEXITSTATUS(status);
399 }
401 return TRUE;
402 }
404 static bool
405 start_io(struct io *io)
406 {
407 int pipefds[2] = { -1, -1 };
409 if (io->type == IO_FD)
410 return TRUE;
412 if ((io->type == IO_RD || io->type == IO_WR) &&
413 pipe(pipefds) < 0)
414 return FALSE;
415 else if (io->type == IO_AP)
416 pipefds[1] = io->pipe;
418 if ((io->pid = fork())) {
419 if (pipefds[!(io->type == IO_WR)] != -1)
420 close(pipefds[!(io->type == IO_WR)]);
421 if (io->pid != -1) {
422 io->pipe = pipefds[!!(io->type == IO_WR)];
423 return TRUE;
424 }
426 } else {
427 if (io->type != IO_FG) {
428 int devnull = open("/dev/null", O_RDWR);
429 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
430 int writefd = (io->type == IO_RD || io->type == IO_AP)
431 ? pipefds[1] : devnull;
433 dup2(readfd, STDIN_FILENO);
434 dup2(writefd, STDOUT_FILENO);
435 dup2(devnull, STDERR_FILENO);
437 close(devnull);
438 if (pipefds[0] != -1)
439 close(pipefds[0]);
440 if (pipefds[1] != -1)
441 close(pipefds[1]);
442 }
444 if (io->dir && *io->dir && chdir(io->dir) == -1)
445 die("Failed to change directory: %s", strerror(errno));
447 execvp(io->argv[0], (char *const*) io->argv);
448 die("Failed to execute program: %s", strerror(errno));
449 }
451 if (pipefds[!!(io->type == IO_WR)] != -1)
452 close(pipefds[!!(io->type == IO_WR)]);
453 return FALSE;
454 }
456 static bool
457 run_io(struct io *io, const char **argv, const char *dir, enum io_type type)
458 {
459 init_io(io, dir, type);
460 if (!format_argv(io->argv, argv, FORMAT_NONE))
461 return FALSE;
462 return start_io(io);
463 }
465 static int
466 run_io_do(struct io *io)
467 {
468 return start_io(io) && done_io(io);
469 }
471 static int
472 run_io_bg(const char **argv)
473 {
474 struct io io = {};
476 init_io(&io, NULL, IO_BG);
477 if (!format_argv(io.argv, argv, FORMAT_NONE))
478 return FALSE;
479 return run_io_do(&io);
480 }
482 static bool
483 run_io_fg(const char **argv, const char *dir)
484 {
485 struct io io = {};
487 init_io(&io, dir, IO_FG);
488 if (!format_argv(io.argv, argv, FORMAT_NONE))
489 return FALSE;
490 return run_io_do(&io);
491 }
493 static bool
494 run_io_append(const char **argv, enum format_flags flags, int fd)
495 {
496 struct io io = {};
498 init_io(&io, NULL, IO_AP);
499 io.pipe = fd;
500 if (format_argv(io.argv, argv, flags))
501 return run_io_do(&io);
502 close(fd);
503 return FALSE;
504 }
506 static bool
507 run_io_rd(struct io *io, const char **argv, enum format_flags flags)
508 {
509 return init_io_rd(io, argv, NULL, flags) && start_io(io);
510 }
512 static bool
513 io_eof(struct io *io)
514 {
515 return io->eof;
516 }
518 static int
519 io_error(struct io *io)
520 {
521 return io->error;
522 }
524 static bool
525 io_strerror(struct io *io)
526 {
527 return strerror(io->error);
528 }
530 static bool
531 io_can_read(struct io *io)
532 {
533 struct timeval tv = { 0, 500 };
534 fd_set fds;
536 FD_ZERO(&fds);
537 FD_SET(io->pipe, &fds);
539 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
540 }
542 static ssize_t
543 io_read(struct io *io, void *buf, size_t bufsize)
544 {
545 do {
546 ssize_t readsize = read(io->pipe, buf, bufsize);
548 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
549 continue;
550 else if (readsize == -1)
551 io->error = errno;
552 else if (readsize == 0)
553 io->eof = 1;
554 return readsize;
555 } while (1);
556 }
558 static char *
559 io_get(struct io *io, int c, bool can_read)
560 {
561 char *eol;
562 ssize_t readsize;
564 if (!io->buf) {
565 io->buf = io->bufpos = malloc(BUFSIZ);
566 if (!io->buf)
567 return NULL;
568 io->bufalloc = BUFSIZ;
569 io->bufsize = 0;
570 }
572 while (TRUE) {
573 if (io->bufsize > 0) {
574 eol = memchr(io->bufpos, c, io->bufsize);
575 if (eol) {
576 char *line = io->bufpos;
578 *eol = 0;
579 io->bufpos = eol + 1;
580 io->bufsize -= io->bufpos - line;
581 return line;
582 }
583 }
585 if (io_eof(io)) {
586 if (io->bufsize) {
587 io->bufpos[io->bufsize] = 0;
588 io->bufsize = 0;
589 return io->bufpos;
590 }
591 return NULL;
592 }
594 if (!can_read)
595 return NULL;
597 if (io->bufsize > 0 && io->bufpos > io->buf)
598 memmove(io->buf, io->bufpos, io->bufsize);
600 io->bufpos = io->buf;
601 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
602 if (io_error(io))
603 return NULL;
604 io->bufsize += readsize;
605 }
606 }
608 static bool
609 io_write(struct io *io, const void *buf, size_t bufsize)
610 {
611 size_t written = 0;
613 while (!io_error(io) && written < bufsize) {
614 ssize_t size;
616 size = write(io->pipe, buf + written, bufsize - written);
617 if (size < 0 && (errno == EAGAIN || errno == EINTR))
618 continue;
619 else if (size == -1)
620 io->error = errno;
621 else
622 written += size;
623 }
625 return written == bufsize;
626 }
628 static bool
629 run_io_buf(const char **argv, char buf[], size_t bufsize)
630 {
631 struct io io = {};
632 bool error;
634 if (!run_io_rd(&io, argv, FORMAT_NONE))
635 return FALSE;
637 io.buf = io.bufpos = buf;
638 io.bufalloc = bufsize;
639 error = !io_get(&io, '\n', TRUE) && io_error(&io);
640 io.buf = NULL;
642 return done_io(&io) || error;
643 }
645 static int read_properties(struct io *io, const char *separators, int (*read)(char *, size_t, char *, size_t));
647 /*
648 * User requests
649 */
651 #define REQ_INFO \
652 /* XXX: Keep the view request first and in sync with views[]. */ \
653 REQ_GROUP("View switching") \
654 REQ_(VIEW_MAIN, "Show main view"), \
655 REQ_(VIEW_DIFF, "Show diff view"), \
656 REQ_(VIEW_LOG, "Show log view"), \
657 REQ_(VIEW_TREE, "Show tree view"), \
658 REQ_(VIEW_BLOB, "Show blob view"), \
659 REQ_(VIEW_BLAME, "Show blame view"), \
660 REQ_(VIEW_HELP, "Show help page"), \
661 REQ_(VIEW_PAGER, "Show pager view"), \
662 REQ_(VIEW_STATUS, "Show status view"), \
663 REQ_(VIEW_STAGE, "Show stage view"), \
664 \
665 REQ_GROUP("View manipulation") \
666 REQ_(ENTER, "Enter current line and scroll"), \
667 REQ_(NEXT, "Move to next"), \
668 REQ_(PREVIOUS, "Move to previous"), \
669 REQ_(VIEW_NEXT, "Move focus to next view"), \
670 REQ_(REFRESH, "Reload and refresh"), \
671 REQ_(MAXIMIZE, "Maximize the current view"), \
672 REQ_(VIEW_CLOSE, "Close the current view"), \
673 REQ_(QUIT, "Close all views and quit"), \
674 \
675 REQ_GROUP("View specific requests") \
676 REQ_(STATUS_UPDATE, "Update file status"), \
677 REQ_(STATUS_REVERT, "Revert file changes"), \
678 REQ_(STATUS_MERGE, "Merge file using external tool"), \
679 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
680 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
681 \
682 REQ_GROUP("Cursor navigation") \
683 REQ_(MOVE_UP, "Move cursor one line up"), \
684 REQ_(MOVE_DOWN, "Move cursor one line down"), \
685 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
686 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
687 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
688 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
689 \
690 REQ_GROUP("Scrolling") \
691 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
692 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
693 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
694 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
695 \
696 REQ_GROUP("Searching") \
697 REQ_(SEARCH, "Search the view"), \
698 REQ_(SEARCH_BACK, "Search backwards in the view"), \
699 REQ_(FIND_NEXT, "Find next search match"), \
700 REQ_(FIND_PREV, "Find previous search match"), \
701 \
702 REQ_GROUP("Option manipulation") \
703 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
704 REQ_(TOGGLE_DATE, "Toggle date display"), \
705 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
706 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
707 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
708 \
709 REQ_GROUP("Misc") \
710 REQ_(PROMPT, "Bring up the prompt"), \
711 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
712 REQ_(SHOW_VERSION, "Show version information"), \
713 REQ_(STOP_LOADING, "Stop all loading views"), \
714 REQ_(EDIT, "Open in editor"), \
715 REQ_(NONE, "Do nothing")
718 /* User action requests. */
719 enum request {
720 #define REQ_GROUP(help)
721 #define REQ_(req, help) REQ_##req
723 /* Offset all requests to avoid conflicts with ncurses getch values. */
724 REQ_OFFSET = KEY_MAX + 1,
725 REQ_INFO
727 #undef REQ_GROUP
728 #undef REQ_
729 };
731 struct request_info {
732 enum request request;
733 const char *name;
734 int namelen;
735 const char *help;
736 };
738 static struct request_info req_info[] = {
739 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
740 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
741 REQ_INFO
742 #undef REQ_GROUP
743 #undef REQ_
744 };
746 static enum request
747 get_request(const char *name)
748 {
749 int namelen = strlen(name);
750 int i;
752 for (i = 0; i < ARRAY_SIZE(req_info); i++)
753 if (req_info[i].namelen == namelen &&
754 !string_enum_compare(req_info[i].name, name, namelen))
755 return req_info[i].request;
757 return REQ_NONE;
758 }
761 /*
762 * Options
763 */
765 static const char usage[] =
766 "tig " TIG_VERSION " (" __DATE__ ")\n"
767 "\n"
768 "Usage: tig [options] [revs] [--] [paths]\n"
769 " or: tig show [options] [revs] [--] [paths]\n"
770 " or: tig blame [rev] path\n"
771 " or: tig status\n"
772 " or: tig < [git command output]\n"
773 "\n"
774 "Options:\n"
775 " -v, --version Show version and exit\n"
776 " -h, --help Show help message and exit";
778 /* Option and state variables. */
779 static bool opt_date = TRUE;
780 static bool opt_author = TRUE;
781 static bool opt_line_number = FALSE;
782 static bool opt_line_graphics = TRUE;
783 static bool opt_rev_graph = FALSE;
784 static bool opt_show_refs = TRUE;
785 static int opt_num_interval = NUMBER_INTERVAL;
786 static int opt_tab_size = TAB_SIZE;
787 static int opt_author_cols = AUTHOR_COLS-1;
788 static char opt_path[SIZEOF_STR] = "";
789 static char opt_file[SIZEOF_STR] = "";
790 static char opt_ref[SIZEOF_REF] = "";
791 static char opt_head[SIZEOF_REF] = "";
792 static char opt_head_rev[SIZEOF_REV] = "";
793 static char opt_remote[SIZEOF_REF] = "";
794 static char opt_encoding[20] = "UTF-8";
795 static bool opt_utf8 = TRUE;
796 static char opt_codeset[20] = "UTF-8";
797 static iconv_t opt_iconv = ICONV_NONE;
798 static char opt_search[SIZEOF_STR] = "";
799 static char opt_cdup[SIZEOF_STR] = "";
800 static char opt_git_dir[SIZEOF_STR] = "";
801 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
802 static char opt_editor[SIZEOF_STR] = "";
803 static FILE *opt_tty = NULL;
805 #define is_initial_commit() (!*opt_head_rev)
806 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || !strcmp(opt_head_rev, (rev)))
808 static enum request
809 parse_options(int argc, const char *argv[], const char ***run_argv)
810 {
811 enum request request = REQ_VIEW_MAIN;
812 const char *subcommand;
813 bool seen_dashdash = FALSE;
814 /* XXX: This is vulnerable to the user overriding options
815 * required for the main view parser. */
816 static const char *custom_argv[SIZEOF_ARG] = {
817 "git", "log", "--no-color", "--pretty=raw", "--parents",
818 "--topo-order", NULL
819 };
820 int i, j = 6;
822 if (!isatty(STDIN_FILENO))
823 return REQ_VIEW_PAGER;
825 if (argc <= 1)
826 return REQ_VIEW_MAIN;
828 subcommand = argv[1];
829 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
830 if (!strcmp(subcommand, "-S"))
831 warn("`-S' has been deprecated; use `tig status' instead");
832 if (argc > 2)
833 warn("ignoring arguments after `%s'", subcommand);
834 return REQ_VIEW_STATUS;
836 } else if (!strcmp(subcommand, "blame")) {
837 if (argc <= 2 || argc > 4)
838 die("invalid number of options to blame\n\n%s", usage);
840 i = 2;
841 if (argc == 4) {
842 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
843 i++;
844 }
846 string_ncopy(opt_file, argv[i], strlen(argv[i]));
847 return REQ_VIEW_BLAME;
849 } else if (!strcmp(subcommand, "show")) {
850 request = REQ_VIEW_DIFF;
852 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
853 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
854 warn("`tig %s' has been deprecated", subcommand);
856 } else {
857 subcommand = NULL;
858 }
860 if (subcommand) {
861 custom_argv[1] = subcommand;
862 j = 2;
863 }
865 for (i = 1 + !!subcommand; i < argc; i++) {
866 const char *opt = argv[i];
868 if (seen_dashdash || !strcmp(opt, "--")) {
869 seen_dashdash = TRUE;
871 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
872 printf("tig version %s\n", TIG_VERSION);
873 return REQ_NONE;
875 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
876 printf("%s\n", usage);
877 return REQ_NONE;
878 }
880 custom_argv[j++] = opt;
881 if (j >= ARRAY_SIZE(custom_argv))
882 die("command too long");
883 }
885 custom_argv[j] = NULL;
886 *run_argv = custom_argv;
888 return request;
889 }
892 /*
893 * Line-oriented content detection.
894 */
896 #define LINE_INFO \
897 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
898 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
899 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
900 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
901 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
902 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
903 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
904 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
905 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
906 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
907 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
908 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
909 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
910 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
911 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
912 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
913 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
914 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
915 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
916 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
917 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
918 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
919 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
920 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
921 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
922 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
923 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
924 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
925 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
926 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
927 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
928 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
929 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
930 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
931 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
932 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
933 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
934 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
935 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
936 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
937 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
938 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
939 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
940 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
941 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
942 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
943 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
944 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
945 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
946 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
947 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
948 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
949 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
950 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
952 enum line_type {
953 #define LINE(type, line, fg, bg, attr) \
954 LINE_##type
955 LINE_INFO,
956 LINE_NONE
957 #undef LINE
958 };
960 struct line_info {
961 const char *name; /* Option name. */
962 int namelen; /* Size of option name. */
963 const char *line; /* The start of line to match. */
964 int linelen; /* Size of string to match. */
965 int fg, bg, attr; /* Color and text attributes for the lines. */
966 };
968 static struct line_info line_info[] = {
969 #define LINE(type, line, fg, bg, attr) \
970 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
971 LINE_INFO
972 #undef LINE
973 };
975 static enum line_type
976 get_line_type(const char *line)
977 {
978 int linelen = strlen(line);
979 enum line_type type;
981 for (type = 0; type < ARRAY_SIZE(line_info); type++)
982 /* Case insensitive search matches Signed-off-by lines better. */
983 if (linelen >= line_info[type].linelen &&
984 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
985 return type;
987 return LINE_DEFAULT;
988 }
990 static inline int
991 get_line_attr(enum line_type type)
992 {
993 assert(type < ARRAY_SIZE(line_info));
994 return COLOR_PAIR(type) | line_info[type].attr;
995 }
997 static struct line_info *
998 get_line_info(const char *name)
999 {
1000 size_t namelen = strlen(name);
1001 enum line_type type;
1003 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1004 if (namelen == line_info[type].namelen &&
1005 !string_enum_compare(line_info[type].name, name, namelen))
1006 return &line_info[type];
1008 return NULL;
1009 }
1011 static void
1012 init_colors(void)
1013 {
1014 int default_bg = line_info[LINE_DEFAULT].bg;
1015 int default_fg = line_info[LINE_DEFAULT].fg;
1016 enum line_type type;
1018 start_color();
1020 if (assume_default_colors(default_fg, default_bg) == ERR) {
1021 default_bg = COLOR_BLACK;
1022 default_fg = COLOR_WHITE;
1023 }
1025 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1026 struct line_info *info = &line_info[type];
1027 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1028 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1030 init_pair(type, fg, bg);
1031 }
1032 }
1034 struct line {
1035 enum line_type type;
1037 /* State flags */
1038 unsigned int selected:1;
1039 unsigned int dirty:1;
1040 unsigned int cleareol:1;
1042 void *data; /* User data */
1043 };
1046 /*
1047 * Keys
1048 */
1050 struct keybinding {
1051 int alias;
1052 enum request request;
1053 };
1055 static struct keybinding default_keybindings[] = {
1056 /* View switching */
1057 { 'm', REQ_VIEW_MAIN },
1058 { 'd', REQ_VIEW_DIFF },
1059 { 'l', REQ_VIEW_LOG },
1060 { 't', REQ_VIEW_TREE },
1061 { 'f', REQ_VIEW_BLOB },
1062 { 'B', REQ_VIEW_BLAME },
1063 { 'p', REQ_VIEW_PAGER },
1064 { 'h', REQ_VIEW_HELP },
1065 { 'S', REQ_VIEW_STATUS },
1066 { 'c', REQ_VIEW_STAGE },
1068 /* View manipulation */
1069 { 'q', REQ_VIEW_CLOSE },
1070 { KEY_TAB, REQ_VIEW_NEXT },
1071 { KEY_RETURN, REQ_ENTER },
1072 { KEY_UP, REQ_PREVIOUS },
1073 { KEY_DOWN, REQ_NEXT },
1074 { 'R', REQ_REFRESH },
1075 { KEY_F(5), REQ_REFRESH },
1076 { 'O', REQ_MAXIMIZE },
1078 /* Cursor navigation */
1079 { 'k', REQ_MOVE_UP },
1080 { 'j', REQ_MOVE_DOWN },
1081 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1082 { KEY_END, REQ_MOVE_LAST_LINE },
1083 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1084 { ' ', REQ_MOVE_PAGE_DOWN },
1085 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1086 { 'b', REQ_MOVE_PAGE_UP },
1087 { '-', REQ_MOVE_PAGE_UP },
1089 /* Scrolling */
1090 { KEY_IC, REQ_SCROLL_LINE_UP },
1091 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1092 { 'w', REQ_SCROLL_PAGE_UP },
1093 { 's', REQ_SCROLL_PAGE_DOWN },
1095 /* Searching */
1096 { '/', REQ_SEARCH },
1097 { '?', REQ_SEARCH_BACK },
1098 { 'n', REQ_FIND_NEXT },
1099 { 'N', REQ_FIND_PREV },
1101 /* Misc */
1102 { 'Q', REQ_QUIT },
1103 { 'z', REQ_STOP_LOADING },
1104 { 'v', REQ_SHOW_VERSION },
1105 { 'r', REQ_SCREEN_REDRAW },
1106 { '.', REQ_TOGGLE_LINENO },
1107 { 'D', REQ_TOGGLE_DATE },
1108 { 'A', REQ_TOGGLE_AUTHOR },
1109 { 'g', REQ_TOGGLE_REV_GRAPH },
1110 { 'F', REQ_TOGGLE_REFS },
1111 { ':', REQ_PROMPT },
1112 { 'u', REQ_STATUS_UPDATE },
1113 { '!', REQ_STATUS_REVERT },
1114 { 'M', REQ_STATUS_MERGE },
1115 { '@', REQ_STAGE_NEXT },
1116 { ',', REQ_TREE_PARENT },
1117 { 'e', REQ_EDIT },
1118 };
1120 #define KEYMAP_INFO \
1121 KEYMAP_(GENERIC), \
1122 KEYMAP_(MAIN), \
1123 KEYMAP_(DIFF), \
1124 KEYMAP_(LOG), \
1125 KEYMAP_(TREE), \
1126 KEYMAP_(BLOB), \
1127 KEYMAP_(BLAME), \
1128 KEYMAP_(PAGER), \
1129 KEYMAP_(HELP), \
1130 KEYMAP_(STATUS), \
1131 KEYMAP_(STAGE)
1133 enum keymap {
1134 #define KEYMAP_(name) KEYMAP_##name
1135 KEYMAP_INFO
1136 #undef KEYMAP_
1137 };
1139 static struct int_map keymap_table[] = {
1140 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
1141 KEYMAP_INFO
1142 #undef KEYMAP_
1143 };
1145 #define set_keymap(map, name) \
1146 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
1148 struct keybinding_table {
1149 struct keybinding *data;
1150 size_t size;
1151 };
1153 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1155 static void
1156 add_keybinding(enum keymap keymap, enum request request, int key)
1157 {
1158 struct keybinding_table *table = &keybindings[keymap];
1160 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1161 if (!table->data)
1162 die("Failed to allocate keybinding");
1163 table->data[table->size].alias = key;
1164 table->data[table->size++].request = request;
1165 }
1167 /* Looks for a key binding first in the given map, then in the generic map, and
1168 * lastly in the default keybindings. */
1169 static enum request
1170 get_keybinding(enum keymap keymap, int key)
1171 {
1172 size_t i;
1174 for (i = 0; i < keybindings[keymap].size; i++)
1175 if (keybindings[keymap].data[i].alias == key)
1176 return keybindings[keymap].data[i].request;
1178 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1179 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1180 return keybindings[KEYMAP_GENERIC].data[i].request;
1182 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1183 if (default_keybindings[i].alias == key)
1184 return default_keybindings[i].request;
1186 return (enum request) key;
1187 }
1190 struct key {
1191 const char *name;
1192 int value;
1193 };
1195 static struct key key_table[] = {
1196 { "Enter", KEY_RETURN },
1197 { "Space", ' ' },
1198 { "Backspace", KEY_BACKSPACE },
1199 { "Tab", KEY_TAB },
1200 { "Escape", KEY_ESC },
1201 { "Left", KEY_LEFT },
1202 { "Right", KEY_RIGHT },
1203 { "Up", KEY_UP },
1204 { "Down", KEY_DOWN },
1205 { "Insert", KEY_IC },
1206 { "Delete", KEY_DC },
1207 { "Hash", '#' },
1208 { "Home", KEY_HOME },
1209 { "End", KEY_END },
1210 { "PageUp", KEY_PPAGE },
1211 { "PageDown", KEY_NPAGE },
1212 { "F1", KEY_F(1) },
1213 { "F2", KEY_F(2) },
1214 { "F3", KEY_F(3) },
1215 { "F4", KEY_F(4) },
1216 { "F5", KEY_F(5) },
1217 { "F6", KEY_F(6) },
1218 { "F7", KEY_F(7) },
1219 { "F8", KEY_F(8) },
1220 { "F9", KEY_F(9) },
1221 { "F10", KEY_F(10) },
1222 { "F11", KEY_F(11) },
1223 { "F12", KEY_F(12) },
1224 };
1226 static int
1227 get_key_value(const char *name)
1228 {
1229 int i;
1231 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1232 if (!strcasecmp(key_table[i].name, name))
1233 return key_table[i].value;
1235 if (strlen(name) == 1 && isprint(*name))
1236 return (int) *name;
1238 return ERR;
1239 }
1241 static const char *
1242 get_key_name(int key_value)
1243 {
1244 static char key_char[] = "'X'";
1245 const char *seq = NULL;
1246 int key;
1248 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1249 if (key_table[key].value == key_value)
1250 seq = key_table[key].name;
1252 if (seq == NULL &&
1253 key_value < 127 &&
1254 isprint(key_value)) {
1255 key_char[1] = (char) key_value;
1256 seq = key_char;
1257 }
1259 return seq ? seq : "(no key)";
1260 }
1262 static const char *
1263 get_key(enum request request)
1264 {
1265 static char buf[BUFSIZ];
1266 size_t pos = 0;
1267 char *sep = "";
1268 int i;
1270 buf[pos] = 0;
1272 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1273 struct keybinding *keybinding = &default_keybindings[i];
1275 if (keybinding->request != request)
1276 continue;
1278 if (!string_format_from(buf, &pos, "%s%s", sep,
1279 get_key_name(keybinding->alias)))
1280 return "Too many keybindings!";
1281 sep = ", ";
1282 }
1284 return buf;
1285 }
1287 struct run_request {
1288 enum keymap keymap;
1289 int key;
1290 const char *argv[SIZEOF_ARG];
1291 };
1293 static struct run_request *run_request;
1294 static size_t run_requests;
1296 static enum request
1297 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1298 {
1299 struct run_request *req;
1301 if (argc >= ARRAY_SIZE(req->argv) - 1)
1302 return REQ_NONE;
1304 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
1305 if (!req)
1306 return REQ_NONE;
1308 run_request = req;
1309 req = &run_request[run_requests];
1310 req->keymap = keymap;
1311 req->key = key;
1312 req->argv[0] = NULL;
1314 if (!format_argv(req->argv, argv, FORMAT_NONE))
1315 return REQ_NONE;
1317 return REQ_NONE + ++run_requests;
1318 }
1320 static struct run_request *
1321 get_run_request(enum request request)
1322 {
1323 if (request <= REQ_NONE)
1324 return NULL;
1325 return &run_request[request - REQ_NONE - 1];
1326 }
1328 static void
1329 add_builtin_run_requests(void)
1330 {
1331 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1332 const char *gc[] = { "git", "gc", NULL };
1333 struct {
1334 enum keymap keymap;
1335 int key;
1336 int argc;
1337 const char **argv;
1338 } reqs[] = {
1339 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1340 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1341 };
1342 int i;
1344 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1345 enum request req;
1347 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1348 if (req != REQ_NONE)
1349 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1350 }
1351 }
1353 /*
1354 * User config file handling.
1355 */
1357 static struct int_map color_map[] = {
1358 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1359 COLOR_MAP(DEFAULT),
1360 COLOR_MAP(BLACK),
1361 COLOR_MAP(BLUE),
1362 COLOR_MAP(CYAN),
1363 COLOR_MAP(GREEN),
1364 COLOR_MAP(MAGENTA),
1365 COLOR_MAP(RED),
1366 COLOR_MAP(WHITE),
1367 COLOR_MAP(YELLOW),
1368 };
1370 #define set_color(color, name) \
1371 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1373 static struct int_map attr_map[] = {
1374 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1375 ATTR_MAP(NORMAL),
1376 ATTR_MAP(BLINK),
1377 ATTR_MAP(BOLD),
1378 ATTR_MAP(DIM),
1379 ATTR_MAP(REVERSE),
1380 ATTR_MAP(STANDOUT),
1381 ATTR_MAP(UNDERLINE),
1382 };
1384 #define set_attribute(attr, name) \
1385 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1387 static int config_lineno;
1388 static bool config_errors;
1389 static const char *config_msg;
1391 /* Wants: object fgcolor bgcolor [attr] */
1392 static int
1393 option_color_command(int argc, const char *argv[])
1394 {
1395 struct line_info *info;
1397 if (argc != 3 && argc != 4) {
1398 config_msg = "Wrong number of arguments given to color command";
1399 return ERR;
1400 }
1402 info = get_line_info(argv[0]);
1403 if (!info) {
1404 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1405 info = get_line_info("delimiter");
1407 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1408 info = get_line_info("date");
1410 } else {
1411 config_msg = "Unknown color name";
1412 return ERR;
1413 }
1414 }
1416 if (set_color(&info->fg, argv[1]) == ERR ||
1417 set_color(&info->bg, argv[2]) == ERR) {
1418 config_msg = "Unknown color";
1419 return ERR;
1420 }
1422 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1423 config_msg = "Unknown attribute";
1424 return ERR;
1425 }
1427 return OK;
1428 }
1430 static bool parse_bool(const char *s)
1431 {
1432 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1433 !strcmp(s, "yes")) ? TRUE : FALSE;
1434 }
1436 static int
1437 parse_int(const char *s, int default_value, int min, int max)
1438 {
1439 int value = atoi(s);
1441 return (value < min || value > max) ? default_value : value;
1442 }
1444 /* Wants: name = value */
1445 static int
1446 option_set_command(int argc, const char *argv[])
1447 {
1448 if (argc != 3) {
1449 config_msg = "Wrong number of arguments given to set command";
1450 return ERR;
1451 }
1453 if (strcmp(argv[1], "=")) {
1454 config_msg = "No value assigned";
1455 return ERR;
1456 }
1458 if (!strcmp(argv[0], "show-author")) {
1459 opt_author = parse_bool(argv[2]);
1460 return OK;
1461 }
1463 if (!strcmp(argv[0], "show-date")) {
1464 opt_date = parse_bool(argv[2]);
1465 return OK;
1466 }
1468 if (!strcmp(argv[0], "show-rev-graph")) {
1469 opt_rev_graph = parse_bool(argv[2]);
1470 return OK;
1471 }
1473 if (!strcmp(argv[0], "show-refs")) {
1474 opt_show_refs = parse_bool(argv[2]);
1475 return OK;
1476 }
1478 if (!strcmp(argv[0], "show-line-numbers")) {
1479 opt_line_number = parse_bool(argv[2]);
1480 return OK;
1481 }
1483 if (!strcmp(argv[0], "line-graphics")) {
1484 opt_line_graphics = parse_bool(argv[2]);
1485 return OK;
1486 }
1488 if (!strcmp(argv[0], "line-number-interval")) {
1489 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1490 return OK;
1491 }
1493 if (!strcmp(argv[0], "author-width")) {
1494 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1495 return OK;
1496 }
1498 if (!strcmp(argv[0], "tab-size")) {
1499 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1500 return OK;
1501 }
1503 if (!strcmp(argv[0], "commit-encoding")) {
1504 const char *arg = argv[2];
1505 int arglen = strlen(arg);
1507 switch (arg[0]) {
1508 case '"':
1509 case '\'':
1510 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1511 config_msg = "Unmatched quotation";
1512 return ERR;
1513 }
1514 arg += 1; arglen -= 2;
1515 default:
1516 string_ncopy(opt_encoding, arg, strlen(arg));
1517 return OK;
1518 }
1519 }
1521 config_msg = "Unknown variable name";
1522 return ERR;
1523 }
1525 /* Wants: mode request key */
1526 static int
1527 option_bind_command(int argc, const char *argv[])
1528 {
1529 enum request request;
1530 int keymap;
1531 int key;
1533 if (argc < 3) {
1534 config_msg = "Wrong number of arguments given to bind command";
1535 return ERR;
1536 }
1538 if (set_keymap(&keymap, argv[0]) == ERR) {
1539 config_msg = "Unknown key map";
1540 return ERR;
1541 }
1543 key = get_key_value(argv[1]);
1544 if (key == ERR) {
1545 config_msg = "Unknown key";
1546 return ERR;
1547 }
1549 request = get_request(argv[2]);
1550 if (request == REQ_NONE) {
1551 const char *obsolete[] = { "cherry-pick", "screen-resize" };
1552 size_t namelen = strlen(argv[2]);
1553 int i;
1555 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1556 if (namelen == strlen(obsolete[i]) &&
1557 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1558 config_msg = "Obsolete request name";
1559 return ERR;
1560 }
1561 }
1562 }
1563 if (request == REQ_NONE && *argv[2]++ == '!')
1564 request = add_run_request(keymap, key, argc - 2, argv + 2);
1565 if (request == REQ_NONE) {
1566 config_msg = "Unknown request name";
1567 return ERR;
1568 }
1570 add_keybinding(keymap, request, key);
1572 return OK;
1573 }
1575 static int
1576 set_option(const char *opt, char *value)
1577 {
1578 const char *argv[SIZEOF_ARG];
1579 int argc = 0;
1581 if (!argv_from_string(argv, &argc, value)) {
1582 config_msg = "Too many option arguments";
1583 return ERR;
1584 }
1586 if (!strcmp(opt, "color"))
1587 return option_color_command(argc, argv);
1589 if (!strcmp(opt, "set"))
1590 return option_set_command(argc, argv);
1592 if (!strcmp(opt, "bind"))
1593 return option_bind_command(argc, argv);
1595 config_msg = "Unknown option command";
1596 return ERR;
1597 }
1599 static int
1600 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1601 {
1602 int status = OK;
1604 config_lineno++;
1605 config_msg = "Internal error";
1607 /* Check for comment markers, since read_properties() will
1608 * only ensure opt and value are split at first " \t". */
1609 optlen = strcspn(opt, "#");
1610 if (optlen == 0)
1611 return OK;
1613 if (opt[optlen] != 0) {
1614 config_msg = "No option value";
1615 status = ERR;
1617 } else {
1618 /* Look for comment endings in the value. */
1619 size_t len = strcspn(value, "#");
1621 if (len < valuelen) {
1622 valuelen = len;
1623 value[valuelen] = 0;
1624 }
1626 status = set_option(opt, value);
1627 }
1629 if (status == ERR) {
1630 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1631 config_lineno, (int) optlen, opt, config_msg);
1632 config_errors = TRUE;
1633 }
1635 /* Always keep going if errors are encountered. */
1636 return OK;
1637 }
1639 static void
1640 load_option_file(const char *path)
1641 {
1642 struct io io = {};
1644 /* It's ok that the file doesn't exist. */
1645 if (!io_open(&io, path))
1646 return;
1648 config_lineno = 0;
1649 config_errors = FALSE;
1651 if (read_properties(&io, " \t", read_option) == ERR ||
1652 config_errors == TRUE)
1653 fprintf(stderr, "Errors while loading %s.\n", path);
1654 }
1656 static int
1657 load_options(void)
1658 {
1659 const char *home = getenv("HOME");
1660 const char *tigrc_user = getenv("TIGRC_USER");
1661 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1662 char buf[SIZEOF_STR];
1664 add_builtin_run_requests();
1666 if (!tigrc_system) {
1667 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1668 return ERR;
1669 tigrc_system = buf;
1670 }
1671 load_option_file(tigrc_system);
1673 if (!tigrc_user) {
1674 if (!home || !string_format(buf, "%s/.tigrc", home))
1675 return ERR;
1676 tigrc_user = buf;
1677 }
1678 load_option_file(tigrc_user);
1680 return OK;
1681 }
1684 /*
1685 * The viewer
1686 */
1688 struct view;
1689 struct view_ops;
1691 /* The display array of active views and the index of the current view. */
1692 static struct view *display[2];
1693 static unsigned int current_view;
1695 /* Reading from the prompt? */
1696 static bool input_mode = FALSE;
1698 #define foreach_displayed_view(view, i) \
1699 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1701 #define displayed_views() (display[1] != NULL ? 2 : 1)
1703 /* Current head and commit ID */
1704 static char ref_blob[SIZEOF_REF] = "";
1705 static char ref_commit[SIZEOF_REF] = "HEAD";
1706 static char ref_head[SIZEOF_REF] = "HEAD";
1708 struct view {
1709 const char *name; /* View name */
1710 const char *cmd_env; /* Command line set via environment */
1711 const char *id; /* Points to either of ref_{head,commit,blob} */
1713 struct view_ops *ops; /* View operations */
1715 enum keymap keymap; /* What keymap does this view have */
1716 bool git_dir; /* Whether the view requires a git directory. */
1718 char ref[SIZEOF_REF]; /* Hovered commit reference */
1719 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1721 int height, width; /* The width and height of the main window */
1722 WINDOW *win; /* The main window */
1723 WINDOW *title; /* The title window living below the main window */
1725 /* Navigation */
1726 unsigned long offset; /* Offset of the window top */
1727 unsigned long lineno; /* Current line number */
1728 unsigned long p_offset; /* Previous offset of the window top */
1729 unsigned long p_lineno; /* Previous current line number */
1730 bool p_restore; /* Should the previous position be restored. */
1732 /* Searching */
1733 char grep[SIZEOF_STR]; /* Search string */
1734 regex_t *regex; /* Pre-compiled regex */
1736 /* If non-NULL, points to the view that opened this view. If this view
1737 * is closed tig will switch back to the parent view. */
1738 struct view *parent;
1740 /* Buffering */
1741 size_t lines; /* Total number of lines */
1742 struct line *line; /* Line index */
1743 size_t line_alloc; /* Total number of allocated lines */
1744 unsigned int digits; /* Number of digits in the lines member. */
1746 /* Drawing */
1747 struct line *curline; /* Line currently being drawn. */
1748 enum line_type curtype; /* Attribute currently used for drawing. */
1749 unsigned long col; /* Column when drawing. */
1751 /* Loading */
1752 struct io io;
1753 struct io *pipe;
1754 time_t start_time;
1755 time_t update_secs;
1756 };
1758 struct view_ops {
1759 /* What type of content being displayed. Used in the title bar. */
1760 const char *type;
1761 /* Default command arguments. */
1762 const char **argv;
1763 /* Open and reads in all view content. */
1764 bool (*open)(struct view *view);
1765 /* Read one line; updates view->line. */
1766 bool (*read)(struct view *view, char *data);
1767 /* Draw one line; @lineno must be < view->height. */
1768 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1769 /* Depending on view handle a special requests. */
1770 enum request (*request)(struct view *view, enum request request, struct line *line);
1771 /* Search for regex in a line. */
1772 bool (*grep)(struct view *view, struct line *line);
1773 /* Select line */
1774 void (*select)(struct view *view, struct line *line);
1775 };
1777 static struct view_ops blame_ops;
1778 static struct view_ops blob_ops;
1779 static struct view_ops diff_ops;
1780 static struct view_ops help_ops;
1781 static struct view_ops log_ops;
1782 static struct view_ops main_ops;
1783 static struct view_ops pager_ops;
1784 static struct view_ops stage_ops;
1785 static struct view_ops status_ops;
1786 static struct view_ops tree_ops;
1788 #define VIEW_STR(name, env, ref, ops, map, git) \
1789 { name, #env, ref, ops, map, git }
1791 #define VIEW_(id, name, ops, git, ref) \
1792 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1795 static struct view views[] = {
1796 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1797 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1798 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1799 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1800 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1801 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1802 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1803 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1804 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1805 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1806 };
1808 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1809 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1811 #define foreach_view(view, i) \
1812 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1814 #define view_is_displayed(view) \
1815 (view == display[0] || view == display[1])
1818 enum line_graphic {
1819 LINE_GRAPHIC_VLINE
1820 };
1822 static int line_graphics[] = {
1823 /* LINE_GRAPHIC_VLINE: */ '|'
1824 };
1826 static inline void
1827 set_view_attr(struct view *view, enum line_type type)
1828 {
1829 if (!view->curline->selected && view->curtype != type) {
1830 wattrset(view->win, get_line_attr(type));
1831 wchgat(view->win, -1, 0, type, NULL);
1832 view->curtype = type;
1833 }
1834 }
1836 static int
1837 draw_chars(struct view *view, enum line_type type, const char *string,
1838 int max_len, bool use_tilde)
1839 {
1840 int len = 0;
1841 int col = 0;
1842 int trimmed = FALSE;
1844 if (max_len <= 0)
1845 return 0;
1847 if (opt_utf8) {
1848 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1849 } else {
1850 col = len = strlen(string);
1851 if (len > max_len) {
1852 if (use_tilde) {
1853 max_len -= 1;
1854 }
1855 col = len = max_len;
1856 trimmed = TRUE;
1857 }
1858 }
1860 set_view_attr(view, type);
1861 waddnstr(view->win, string, len);
1862 if (trimmed && use_tilde) {
1863 set_view_attr(view, LINE_DELIMITER);
1864 waddch(view->win, '~');
1865 col++;
1866 }
1868 return col;
1869 }
1871 static int
1872 draw_space(struct view *view, enum line_type type, int max, int spaces)
1873 {
1874 static char space[] = " ";
1875 int col = 0;
1877 spaces = MIN(max, spaces);
1879 while (spaces > 0) {
1880 int len = MIN(spaces, sizeof(space) - 1);
1882 col += draw_chars(view, type, space, spaces, FALSE);
1883 spaces -= len;
1884 }
1886 return col;
1887 }
1889 static bool
1890 draw_lineno(struct view *view, unsigned int lineno)
1891 {
1892 char number[10];
1893 int digits3 = view->digits < 3 ? 3 : view->digits;
1894 int max_number = MIN(digits3, STRING_SIZE(number));
1895 int max = view->width - view->col;
1896 int col;
1898 if (max < max_number)
1899 max_number = max;
1901 lineno += view->offset + 1;
1902 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1903 static char fmt[] = "%1ld";
1905 if (view->digits <= 9)
1906 fmt[1] = '0' + digits3;
1908 if (!string_format(number, fmt, lineno))
1909 number[0] = 0;
1910 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1911 } else {
1912 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1913 }
1915 if (col < max) {
1916 set_view_attr(view, LINE_DEFAULT);
1917 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1918 col++;
1919 }
1921 if (col < max)
1922 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1923 view->col += col;
1925 return view->width - view->col <= 0;
1926 }
1928 static bool
1929 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1930 {
1931 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1932 return view->width - view->col <= 0;
1933 }
1935 static bool
1936 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1937 {
1938 int max = view->width - view->col;
1939 int i;
1941 if (max < size)
1942 size = max;
1944 set_view_attr(view, type);
1945 /* Using waddch() instead of waddnstr() ensures that
1946 * they'll be rendered correctly for the cursor line. */
1947 for (i = 0; i < size; i++)
1948 waddch(view->win, graphic[i]);
1950 view->col += size;
1951 if (size < max) {
1952 waddch(view->win, ' ');
1953 view->col++;
1954 }
1956 return view->width - view->col <= 0;
1957 }
1959 static bool
1960 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1961 {
1962 int max = MIN(view->width - view->col, len);
1963 int col;
1965 if (text)
1966 col = draw_chars(view, type, text, max - 1, trim);
1967 else
1968 col = draw_space(view, type, max - 1, max - 1);
1970 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1971 return view->width - view->col <= 0;
1972 }
1974 static bool
1975 draw_date(struct view *view, struct tm *time)
1976 {
1977 char buf[DATE_COLS];
1978 char *date;
1979 int timelen = 0;
1981 if (time)
1982 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1983 date = timelen ? buf : NULL;
1985 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1986 }
1988 static bool
1989 draw_view_line(struct view *view, unsigned int lineno)
1990 {
1991 struct line *line;
1992 bool selected = (view->offset + lineno == view->lineno);
1993 bool draw_ok;
1995 assert(view_is_displayed(view));
1997 if (view->offset + lineno >= view->lines)
1998 return FALSE;
2000 line = &view->line[view->offset + lineno];
2002 wmove(view->win, lineno, 0);
2003 if (line->cleareol)
2004 wclrtoeol(view->win);
2005 view->col = 0;
2006 view->curline = line;
2007 view->curtype = LINE_NONE;
2008 line->selected = FALSE;
2009 line->dirty = line->cleareol = 0;
2011 if (selected) {
2012 set_view_attr(view, LINE_CURSOR);
2013 line->selected = TRUE;
2014 view->ops->select(view, line);
2015 }
2017 scrollok(view->win, FALSE);
2018 draw_ok = view->ops->draw(view, line, lineno);
2019 scrollok(view->win, TRUE);
2021 return draw_ok;
2022 }
2024 static void
2025 redraw_view_dirty(struct view *view)
2026 {
2027 bool dirty = FALSE;
2028 int lineno;
2030 for (lineno = 0; lineno < view->height; lineno++) {
2031 if (view->offset + lineno >= view->lines)
2032 break;
2033 if (!view->line[view->offset + lineno].dirty)
2034 continue;
2035 dirty = TRUE;
2036 if (!draw_view_line(view, lineno))
2037 break;
2038 }
2040 if (!dirty)
2041 return;
2042 redrawwin(view->win);
2043 if (input_mode)
2044 wnoutrefresh(view->win);
2045 else
2046 wrefresh(view->win);
2047 }
2049 static void
2050 redraw_view_from(struct view *view, int lineno)
2051 {
2052 assert(0 <= lineno && lineno < view->height);
2054 for (; lineno < view->height; lineno++) {
2055 if (!draw_view_line(view, lineno))
2056 break;
2057 }
2059 redrawwin(view->win);
2060 if (input_mode)
2061 wnoutrefresh(view->win);
2062 else
2063 wrefresh(view->win);
2064 }
2066 static void
2067 redraw_view(struct view *view)
2068 {
2069 werase(view->win);
2070 redraw_view_from(view, 0);
2071 }
2074 static void
2075 update_view_title(struct view *view)
2076 {
2077 char buf[SIZEOF_STR];
2078 char state[SIZEOF_STR];
2079 size_t bufpos = 0, statelen = 0;
2081 assert(view_is_displayed(view));
2083 if (view != VIEW(REQ_VIEW_STATUS) && view->lines) {
2084 unsigned int view_lines = view->offset + view->height;
2085 unsigned int lines = view->lines
2086 ? MIN(view_lines, view->lines) * 100 / view->lines
2087 : 0;
2089 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2090 view->ops->type,
2091 view->lineno + 1,
2092 view->lines,
2093 lines);
2095 }
2097 if (view->pipe) {
2098 time_t secs = time(NULL) - view->start_time;
2100 /* Three git seconds are a long time ... */
2101 if (secs > 2)
2102 string_format_from(state, &statelen, " loading %lds", secs);
2103 }
2105 string_format_from(buf, &bufpos, "[%s]", view->name);
2106 if (*view->ref && bufpos < view->width) {
2107 size_t refsize = strlen(view->ref);
2108 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2110 if (minsize < view->width)
2111 refsize = view->width - minsize + 7;
2112 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2113 }
2115 if (statelen && bufpos < view->width) {
2116 string_format_from(buf, &bufpos, "%s", state);
2117 }
2119 if (view == display[current_view])
2120 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2121 else
2122 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2124 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2125 wclrtoeol(view->title);
2126 wmove(view->title, 0, view->width - 1);
2128 if (input_mode)
2129 wnoutrefresh(view->title);
2130 else
2131 wrefresh(view->title);
2132 }
2134 static void
2135 resize_display(void)
2136 {
2137 int offset, i;
2138 struct view *base = display[0];
2139 struct view *view = display[1] ? display[1] : display[0];
2141 /* Setup window dimensions */
2143 getmaxyx(stdscr, base->height, base->width);
2145 /* Make room for the status window. */
2146 base->height -= 1;
2148 if (view != base) {
2149 /* Horizontal split. */
2150 view->width = base->width;
2151 view->height = SCALE_SPLIT_VIEW(base->height);
2152 base->height -= view->height;
2154 /* Make room for the title bar. */
2155 view->height -= 1;
2156 }
2158 /* Make room for the title bar. */
2159 base->height -= 1;
2161 offset = 0;
2163 foreach_displayed_view (view, i) {
2164 if (!view->win) {
2165 view->win = newwin(view->height, 0, offset, 0);
2166 if (!view->win)
2167 die("Failed to create %s view", view->name);
2169 scrollok(view->win, TRUE);
2171 view->title = newwin(1, 0, offset + view->height, 0);
2172 if (!view->title)
2173 die("Failed to create title window");
2175 } else {
2176 wresize(view->win, view->height, view->width);
2177 mvwin(view->win, offset, 0);
2178 mvwin(view->title, offset + view->height, 0);
2179 }
2181 offset += view->height + 1;
2182 }
2183 }
2185 static void
2186 redraw_display(bool clear)
2187 {
2188 struct view *view;
2189 int i;
2191 foreach_displayed_view (view, i) {
2192 if (clear)
2193 wclear(view->win);
2194 redraw_view(view);
2195 update_view_title(view);
2196 }
2197 }
2199 static void
2200 update_display_cursor(struct view *view)
2201 {
2202 /* Move the cursor to the right-most column of the cursor line.
2203 *
2204 * XXX: This could turn out to be a bit expensive, but it ensures that
2205 * the cursor does not jump around. */
2206 if (view->lines) {
2207 wmove(view->win, view->lineno - view->offset, view->width - 1);
2208 wrefresh(view->win);
2209 }
2210 }
2212 static void
2213 toggle_view_option(bool *option, const char *help)
2214 {
2215 *option = !*option;
2216 redraw_display(FALSE);
2217 report("%sabling %s", *option ? "En" : "Dis", help);
2218 }
2220 /*
2221 * Navigation
2222 */
2224 /* Scrolling backend */
2225 static void
2226 do_scroll_view(struct view *view, int lines)
2227 {
2228 bool redraw_current_line = FALSE;
2230 /* The rendering expects the new offset. */
2231 view->offset += lines;
2233 assert(0 <= view->offset && view->offset < view->lines);
2234 assert(lines);
2236 /* Move current line into the view. */
2237 if (view->lineno < view->offset) {
2238 view->lineno = view->offset;
2239 redraw_current_line = TRUE;
2240 } else if (view->lineno >= view->offset + view->height) {
2241 view->lineno = view->offset + view->height - 1;
2242 redraw_current_line = TRUE;
2243 }
2245 assert(view->offset <= view->lineno && view->lineno < view->lines);
2247 /* Redraw the whole screen if scrolling is pointless. */
2248 if (view->height < ABS(lines)) {
2249 redraw_view(view);
2251 } else {
2252 int line = lines > 0 ? view->height - lines : 0;
2253 int end = line + ABS(lines);
2255 wscrl(view->win, lines);
2257 for (; line < end; line++) {
2258 if (!draw_view_line(view, line))
2259 break;
2260 }
2262 if (redraw_current_line)
2263 draw_view_line(view, view->lineno - view->offset);
2264 }
2266 redrawwin(view->win);
2267 wrefresh(view->win);
2268 report("");
2269 }
2271 /* Scroll frontend */
2272 static void
2273 scroll_view(struct view *view, enum request request)
2274 {
2275 int lines = 1;
2277 assert(view_is_displayed(view));
2279 switch (request) {
2280 case REQ_SCROLL_PAGE_DOWN:
2281 lines = view->height;
2282 case REQ_SCROLL_LINE_DOWN:
2283 if (view->offset + lines > view->lines)
2284 lines = view->lines - view->offset;
2286 if (lines == 0 || view->offset + view->height >= view->lines) {
2287 report("Cannot scroll beyond the last line");
2288 return;
2289 }
2290 break;
2292 case REQ_SCROLL_PAGE_UP:
2293 lines = view->height;
2294 case REQ_SCROLL_LINE_UP:
2295 if (lines > view->offset)
2296 lines = view->offset;
2298 if (lines == 0) {
2299 report("Cannot scroll beyond the first line");
2300 return;
2301 }
2303 lines = -lines;
2304 break;
2306 default:
2307 die("request %d not handled in switch", request);
2308 }
2310 do_scroll_view(view, lines);
2311 }
2313 /* Cursor moving */
2314 static void
2315 move_view(struct view *view, enum request request)
2316 {
2317 int scroll_steps = 0;
2318 int steps;
2320 switch (request) {
2321 case REQ_MOVE_FIRST_LINE:
2322 steps = -view->lineno;
2323 break;
2325 case REQ_MOVE_LAST_LINE:
2326 steps = view->lines - view->lineno - 1;
2327 break;
2329 case REQ_MOVE_PAGE_UP:
2330 steps = view->height > view->lineno
2331 ? -view->lineno : -view->height;
2332 break;
2334 case REQ_MOVE_PAGE_DOWN:
2335 steps = view->lineno + view->height >= view->lines
2336 ? view->lines - view->lineno - 1 : view->height;
2337 break;
2339 case REQ_MOVE_UP:
2340 steps = -1;
2341 break;
2343 case REQ_MOVE_DOWN:
2344 steps = 1;
2345 break;
2347 default:
2348 die("request %d not handled in switch", request);
2349 }
2351 if (steps <= 0 && view->lineno == 0) {
2352 report("Cannot move beyond the first line");
2353 return;
2355 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2356 report("Cannot move beyond the last line");
2357 return;
2358 }
2360 /* Move the current line */
2361 view->lineno += steps;
2362 assert(0 <= view->lineno && view->lineno < view->lines);
2364 /* Check whether the view needs to be scrolled */
2365 if (view->lineno < view->offset ||
2366 view->lineno >= view->offset + view->height) {
2367 scroll_steps = steps;
2368 if (steps < 0 && -steps > view->offset) {
2369 scroll_steps = -view->offset;
2371 } else if (steps > 0) {
2372 if (view->lineno == view->lines - 1 &&
2373 view->lines > view->height) {
2374 scroll_steps = view->lines - view->offset - 1;
2375 if (scroll_steps >= view->height)
2376 scroll_steps -= view->height - 1;
2377 }
2378 }
2379 }
2381 if (!view_is_displayed(view)) {
2382 view->offset += scroll_steps;
2383 assert(0 <= view->offset && view->offset < view->lines);
2384 view->ops->select(view, &view->line[view->lineno]);
2385 return;
2386 }
2388 /* Repaint the old "current" line if we be scrolling */
2389 if (ABS(steps) < view->height)
2390 draw_view_line(view, view->lineno - steps - view->offset);
2392 if (scroll_steps) {
2393 do_scroll_view(view, scroll_steps);
2394 return;
2395 }
2397 /* Draw the current line */
2398 draw_view_line(view, view->lineno - view->offset);
2400 redrawwin(view->win);
2401 wrefresh(view->win);
2402 report("");
2403 }
2406 /*
2407 * Searching
2408 */
2410 static void search_view(struct view *view, enum request request);
2412 static void
2413 select_view_line(struct view *view, unsigned long lineno)
2414 {
2415 if (lineno - view->offset >= view->height) {
2416 view->offset = lineno;
2417 view->lineno = lineno;
2418 if (view_is_displayed(view))
2419 redraw_view(view);
2421 } else {
2422 unsigned long old_lineno = view->lineno - view->offset;
2424 view->lineno = lineno;
2425 if (view_is_displayed(view)) {
2426 draw_view_line(view, old_lineno);
2427 draw_view_line(view, view->lineno - view->offset);
2428 redrawwin(view->win);
2429 wrefresh(view->win);
2430 } else {
2431 view->ops->select(view, &view->line[view->lineno]);
2432 }
2433 }
2434 }
2436 static void
2437 find_next(struct view *view, enum request request)
2438 {
2439 unsigned long lineno = view->lineno;
2440 int direction;
2442 if (!*view->grep) {
2443 if (!*opt_search)
2444 report("No previous search");
2445 else
2446 search_view(view, request);
2447 return;
2448 }
2450 switch (request) {
2451 case REQ_SEARCH:
2452 case REQ_FIND_NEXT:
2453 direction = 1;
2454 break;
2456 case REQ_SEARCH_BACK:
2457 case REQ_FIND_PREV:
2458 direction = -1;
2459 break;
2461 default:
2462 return;
2463 }
2465 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2466 lineno += direction;
2468 /* Note, lineno is unsigned long so will wrap around in which case it
2469 * will become bigger than view->lines. */
2470 for (; lineno < view->lines; lineno += direction) {
2471 if (view->ops->grep(view, &view->line[lineno])) {
2472 select_view_line(view, lineno);
2473 report("Line %ld matches '%s'", lineno + 1, view->grep);
2474 return;
2475 }
2476 }
2478 report("No match found for '%s'", view->grep);
2479 }
2481 static void
2482 search_view(struct view *view, enum request request)
2483 {
2484 int regex_err;
2486 if (view->regex) {
2487 regfree(view->regex);
2488 *view->grep = 0;
2489 } else {
2490 view->regex = calloc(1, sizeof(*view->regex));
2491 if (!view->regex)
2492 return;
2493 }
2495 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2496 if (regex_err != 0) {
2497 char buf[SIZEOF_STR] = "unknown error";
2499 regerror(regex_err, view->regex, buf, sizeof(buf));
2500 report("Search failed: %s", buf);
2501 return;
2502 }
2504 string_copy(view->grep, opt_search);
2506 find_next(view, request);
2507 }
2509 /*
2510 * Incremental updating
2511 */
2513 static void
2514 reset_view(struct view *view)
2515 {
2516 int i;
2518 for (i = 0; i < view->lines; i++)
2519 free(view->line[i].data);
2520 free(view->line);
2522 view->p_offset = view->offset;
2523 view->p_lineno = view->lineno;
2525 view->line = NULL;
2526 view->offset = 0;
2527 view->lines = 0;
2528 view->lineno = 0;
2529 view->line_alloc = 0;
2530 view->vid[0] = 0;
2531 view->update_secs = 0;
2532 }
2534 static void
2535 free_argv(const char *argv[])
2536 {
2537 int argc;
2539 for (argc = 0; argv[argc]; argc++)
2540 free((void *) argv[argc]);
2541 }
2543 static bool
2544 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2545 {
2546 char buf[SIZEOF_STR];
2547 int argc;
2548 bool noreplace = flags == FORMAT_NONE;
2550 free_argv(dst_argv);
2552 for (argc = 0; src_argv[argc]; argc++) {
2553 const char *arg = src_argv[argc];
2554 size_t bufpos = 0;
2556 while (arg) {
2557 char *next = strstr(arg, "%(");
2558 int len = next - arg;
2559 const char *value;
2561 if (!next || noreplace) {
2562 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2563 noreplace = TRUE;
2564 len = strlen(arg);
2565 value = "";
2567 } else if (!prefixcmp(next, "%(directory)")) {
2568 value = opt_path;
2570 } else if (!prefixcmp(next, "%(file)")) {
2571 value = opt_file;
2573 } else if (!prefixcmp(next, "%(ref)")) {
2574 value = *opt_ref ? opt_ref : "HEAD";
2576 } else if (!prefixcmp(next, "%(head)")) {
2577 value = ref_head;
2579 } else if (!prefixcmp(next, "%(commit)")) {
2580 value = ref_commit;
2582 } else if (!prefixcmp(next, "%(blob)")) {
2583 value = ref_blob;
2585 } else {
2586 report("Unknown replacement: `%s`", next);
2587 return FALSE;
2588 }
2590 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2591 return FALSE;
2593 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2594 }
2596 dst_argv[argc] = strdup(buf);
2597 if (!dst_argv[argc])
2598 break;
2599 }
2601 dst_argv[argc] = NULL;
2603 return src_argv[argc] == NULL;
2604 }
2606 static bool
2607 restore_view_position(struct view *view)
2608 {
2609 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2610 return FALSE;
2612 /* Changing the view position cancels the restoring. */
2613 /* FIXME: Changing back to the first line is not detected. */
2614 if (view->offset != 0 || view->lineno != 0) {
2615 view->p_restore = FALSE;
2616 return FALSE;
2617 }
2619 if (view->p_lineno >= view->lines) {
2620 view->p_lineno = view->lines > 0 ? view->lines - 1 : 0;
2621 if (view->p_offset >= view->p_lineno) {
2622 unsigned long half = view->height / 2;
2624 if (view->p_lineno > half)
2625 view->p_offset = view->p_lineno - half;
2626 else
2627 view->p_offset = 0;
2628 }
2629 }
2631 if (view_is_displayed(view) &&
2632 view->offset != view->p_offset &&
2633 view->lineno != view->p_lineno)
2634 werase(view->win);
2636 view->offset = view->p_offset;
2637 view->lineno = view->p_lineno;
2638 view->p_restore = FALSE;
2640 return TRUE;
2641 }
2643 static void
2644 end_update(struct view *view, bool force)
2645 {
2646 if (!view->pipe)
2647 return;
2648 while (!view->ops->read(view, NULL))
2649 if (!force)
2650 return;
2651 set_nonblocking_input(FALSE);
2652 if (force)
2653 kill_io(view->pipe);
2654 done_io(view->pipe);
2655 view->pipe = NULL;
2656 }
2658 static void
2659 setup_update(struct view *view, const char *vid)
2660 {
2661 set_nonblocking_input(TRUE);
2662 reset_view(view);
2663 string_copy_rev(view->vid, vid);
2664 view->pipe = &view->io;
2665 view->start_time = time(NULL);
2666 }
2668 static bool
2669 prepare_update(struct view *view, const char *argv[], const char *dir,
2670 enum format_flags flags)
2671 {
2672 if (view->pipe)
2673 end_update(view, TRUE);
2674 return init_io_rd(&view->io, argv, dir, flags);
2675 }
2677 static bool
2678 prepare_update_file(struct view *view, const char *name)
2679 {
2680 if (view->pipe)
2681 end_update(view, TRUE);
2682 return io_open(&view->io, name);
2683 }
2685 static bool
2686 begin_update(struct view *view, bool refresh)
2687 {
2688 if (view->pipe)
2689 end_update(view, TRUE);
2691 if (refresh) {
2692 if (!start_io(&view->io))
2693 return FALSE;
2695 } else {
2696 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2697 opt_path[0] = 0;
2699 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2700 return FALSE;
2702 /* Put the current ref_* value to the view title ref
2703 * member. This is needed by the blob view. Most other
2704 * views sets it automatically after loading because the
2705 * first line is a commit line. */
2706 string_copy_rev(view->ref, view->id);
2707 }
2709 setup_update(view, view->id);
2711 return TRUE;
2712 }
2714 #define ITEM_CHUNK_SIZE 256
2715 static void *
2716 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2717 {
2718 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2719 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2721 if (mem == NULL || num_chunks != num_chunks_new) {
2722 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2723 mem = realloc(mem, *size * item_size);
2724 }
2726 return mem;
2727 }
2729 static struct line *
2730 realloc_lines(struct view *view, size_t line_size)
2731 {
2732 size_t alloc = view->line_alloc;
2733 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2734 sizeof(*view->line));
2736 if (!tmp)
2737 return NULL;
2739 view->line = tmp;
2740 view->line_alloc = alloc;
2741 return view->line;
2742 }
2744 static bool
2745 update_view(struct view *view)
2746 {
2747 char out_buffer[BUFSIZ * 2];
2748 char *line;
2749 /* Clear the view and redraw everything since the tree sorting
2750 * might have rearranged things. */
2751 bool redraw = view->lines == 0;
2752 bool can_read = TRUE;
2754 if (!view->pipe)
2755 return TRUE;
2757 if (!io_can_read(view->pipe)) {
2758 if (view->lines == 0) {
2759 time_t secs = time(NULL) - view->start_time;
2761 if (secs > view->update_secs) {
2762 if (view->update_secs == 0)
2763 redraw_view(view);
2764 update_view_title(view);
2765 view->update_secs = secs;
2766 }
2767 }
2768 return TRUE;
2769 }
2771 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2772 if (opt_iconv != ICONV_NONE) {
2773 ICONV_CONST char *inbuf = line;
2774 size_t inlen = strlen(line) + 1;
2776 char *outbuf = out_buffer;
2777 size_t outlen = sizeof(out_buffer);
2779 size_t ret;
2781 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2782 if (ret != (size_t) -1)
2783 line = out_buffer;
2784 }
2786 if (!view->ops->read(view, line))
2787 goto alloc_error;
2788 }
2790 {
2791 unsigned long lines = view->lines;
2792 int digits;
2794 for (digits = 0; lines; digits++)
2795 lines /= 10;
2797 /* Keep the displayed view in sync with line number scaling. */
2798 if (digits != view->digits) {
2799 view->digits = digits;
2800 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2801 redraw = TRUE;
2802 }
2803 }
2805 if (io_error(view->pipe)) {
2806 report("Failed to read: %s", io_strerror(view->pipe));
2807 end_update(view, TRUE);
2809 } else if (io_eof(view->pipe)) {
2810 report("");
2811 end_update(view, FALSE);
2812 }
2814 if (restore_view_position(view))
2815 redraw = TRUE;
2817 if (!view_is_displayed(view))
2818 return TRUE;
2820 if (redraw)
2821 redraw_view_from(view, 0);
2822 else
2823 redraw_view_dirty(view);
2825 /* Update the title _after_ the redraw so that if the redraw picks up a
2826 * commit reference in view->ref it'll be available here. */
2827 update_view_title(view);
2828 return TRUE;
2830 alloc_error:
2831 report("Allocation failure");
2832 end_update(view, TRUE);
2833 return FALSE;
2834 }
2836 static struct line *
2837 add_line_data(struct view *view, void *data, enum line_type type)
2838 {
2839 struct line *line;
2841 if (!realloc_lines(view, view->lines + 1))
2842 return NULL;
2844 line = &view->line[view->lines++];
2845 memset(line, 0, sizeof(*line));
2846 line->type = type;
2847 line->data = data;
2848 line->dirty = 1;
2850 return line;
2851 }
2853 static struct line *
2854 add_line_text(struct view *view, const char *text, enum line_type type)
2855 {
2856 char *data = text ? strdup(text) : NULL;
2858 return data ? add_line_data(view, data, type) : NULL;
2859 }
2861 static struct line *
2862 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2863 {
2864 char buf[SIZEOF_STR];
2865 va_list args;
2867 va_start(args, fmt);
2868 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2869 buf[0] = 0;
2870 va_end(args);
2872 return buf[0] ? add_line_text(view, buf, type) : NULL;
2873 }
2875 /*
2876 * View opening
2877 */
2879 enum open_flags {
2880 OPEN_DEFAULT = 0, /* Use default view switching. */
2881 OPEN_SPLIT = 1, /* Split current view. */
2882 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2883 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2884 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2885 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2886 OPEN_PREPARED = 32, /* Open already prepared command. */
2887 };
2889 static void
2890 open_view(struct view *prev, enum request request, enum open_flags flags)
2891 {
2892 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2893 bool split = !!(flags & OPEN_SPLIT);
2894 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2895 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2896 struct view *view = VIEW(request);
2897 int nviews = displayed_views();
2898 struct view *base_view = display[0];
2900 if (view == prev && nviews == 1 && !reload) {
2901 report("Already in %s view", view->name);
2902 return;
2903 }
2905 if (view->git_dir && !opt_git_dir[0]) {
2906 report("The %s view is disabled in pager view", view->name);
2907 return;
2908 }
2910 if (split) {
2911 display[1] = view;
2912 if (!backgrounded)
2913 current_view = 1;
2914 } else if (!nomaximize) {
2915 /* Maximize the current view. */
2916 memset(display, 0, sizeof(display));
2917 current_view = 0;
2918 display[current_view] = view;
2919 }
2921 /* Resize the view when switching between split- and full-screen,
2922 * or when switching between two different full-screen views. */
2923 if (nviews != displayed_views() ||
2924 (nviews == 1 && base_view != display[0]))
2925 resize_display();
2927 if (view->ops->open) {
2928 if (!view->ops->open(view)) {
2929 report("Failed to load %s view", view->name);
2930 return;
2931 }
2932 restore_view_position(view);
2934 } else if ((reload || strcmp(view->vid, view->id)) &&
2935 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
2936 report("Failed to load %s view", view->name);
2937 return;
2938 }
2940 if (split && prev->lineno - prev->offset >= prev->height) {
2941 /* Take the title line into account. */
2942 int lines = prev->lineno - prev->offset - prev->height + 1;
2944 /* Scroll the view that was split if the current line is
2945 * outside the new limited view. */
2946 do_scroll_view(prev, lines);
2947 }
2949 if (prev && view != prev) {
2950 if (split && !backgrounded) {
2951 /* "Blur" the previous view. */
2952 update_view_title(prev);
2953 }
2955 view->parent = prev;
2956 }
2958 if (view->pipe && view->lines == 0) {
2959 /* Clear the old view and let the incremental updating refill
2960 * the screen. */
2961 werase(view->win);
2962 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2963 report("");
2964 } else if (view_is_displayed(view)) {
2965 redraw_view(view);
2966 report("");
2967 }
2969 /* If the view is backgrounded the above calls to report()
2970 * won't redraw the view title. */
2971 if (backgrounded)
2972 update_view_title(view);
2973 }
2975 static void
2976 open_external_viewer(const char *argv[], const char *dir)
2977 {
2978 def_prog_mode(); /* save current tty modes */
2979 endwin(); /* restore original tty modes */
2980 run_io_fg(argv, dir);
2981 fprintf(stderr, "Press Enter to continue");
2982 getc(opt_tty);
2983 reset_prog_mode();
2984 redraw_display(TRUE);
2985 }
2987 static void
2988 open_mergetool(const char *file)
2989 {
2990 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2992 open_external_viewer(mergetool_argv, opt_cdup);
2993 }
2995 static void
2996 open_editor(bool from_root, const char *file)
2997 {
2998 const char *editor_argv[] = { "vi", file, NULL };
2999 const char *editor;
3001 editor = getenv("GIT_EDITOR");
3002 if (!editor && *opt_editor)
3003 editor = opt_editor;
3004 if (!editor)
3005 editor = getenv("VISUAL");
3006 if (!editor)
3007 editor = getenv("EDITOR");
3008 if (!editor)
3009 editor = "vi";
3011 editor_argv[0] = editor;
3012 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
3013 }
3015 static void
3016 open_run_request(enum request request)
3017 {
3018 struct run_request *req = get_run_request(request);
3019 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3021 if (!req) {
3022 report("Unknown run request");
3023 return;
3024 }
3026 if (format_argv(argv, req->argv, FORMAT_ALL))
3027 open_external_viewer(argv, NULL);
3028 free_argv(argv);
3029 }
3031 /*
3032 * User request switch noodle
3033 */
3035 static int
3036 view_driver(struct view *view, enum request request)
3037 {
3038 int i;
3040 if (request == REQ_NONE) {
3041 doupdate();
3042 return TRUE;
3043 }
3045 if (request > REQ_NONE) {
3046 open_run_request(request);
3047 /* FIXME: When all views can refresh always do this. */
3048 if (view == VIEW(REQ_VIEW_STATUS) ||
3049 view == VIEW(REQ_VIEW_MAIN) ||
3050 view == VIEW(REQ_VIEW_LOG) ||
3051 view == VIEW(REQ_VIEW_STAGE))
3052 request = REQ_REFRESH;
3053 else
3054 return TRUE;
3055 }
3057 if (view && view->lines) {
3058 request = view->ops->request(view, request, &view->line[view->lineno]);
3059 if (request == REQ_NONE)
3060 return TRUE;
3061 }
3063 switch (request) {
3064 case REQ_MOVE_UP:
3065 case REQ_MOVE_DOWN:
3066 case REQ_MOVE_PAGE_UP:
3067 case REQ_MOVE_PAGE_DOWN:
3068 case REQ_MOVE_FIRST_LINE:
3069 case REQ_MOVE_LAST_LINE:
3070 move_view(view, request);
3071 break;
3073 case REQ_SCROLL_LINE_DOWN:
3074 case REQ_SCROLL_LINE_UP:
3075 case REQ_SCROLL_PAGE_DOWN:
3076 case REQ_SCROLL_PAGE_UP:
3077 scroll_view(view, request);
3078 break;
3080 case REQ_VIEW_BLAME:
3081 if (!opt_file[0]) {
3082 report("No file chosen, press %s to open tree view",
3083 get_key(REQ_VIEW_TREE));
3084 break;
3085 }
3086 open_view(view, request, OPEN_DEFAULT);
3087 break;
3089 case REQ_VIEW_BLOB:
3090 if (!ref_blob[0]) {
3091 report("No file chosen, press %s to open tree view",
3092 get_key(REQ_VIEW_TREE));
3093 break;
3094 }
3095 open_view(view, request, OPEN_DEFAULT);
3096 break;
3098 case REQ_VIEW_PAGER:
3099 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3100 report("No pager content, press %s to run command from prompt",
3101 get_key(REQ_PROMPT));
3102 break;
3103 }
3104 open_view(view, request, OPEN_DEFAULT);
3105 break;
3107 case REQ_VIEW_STAGE:
3108 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3109 report("No stage content, press %s to open the status view and choose file",
3110 get_key(REQ_VIEW_STATUS));
3111 break;
3112 }
3113 open_view(view, request, OPEN_DEFAULT);
3114 break;
3116 case REQ_VIEW_STATUS:
3117 if (opt_is_inside_work_tree == FALSE) {
3118 report("The status view requires a working tree");
3119 break;
3120 }
3121 open_view(view, request, OPEN_DEFAULT);
3122 break;
3124 case REQ_VIEW_MAIN:
3125 case REQ_VIEW_DIFF:
3126 case REQ_VIEW_LOG:
3127 case REQ_VIEW_TREE:
3128 case REQ_VIEW_HELP:
3129 open_view(view, request, OPEN_DEFAULT);
3130 break;
3132 case REQ_NEXT:
3133 case REQ_PREVIOUS:
3134 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3136 if ((view == VIEW(REQ_VIEW_DIFF) &&
3137 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3138 (view == VIEW(REQ_VIEW_DIFF) &&
3139 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3140 (view == VIEW(REQ_VIEW_STAGE) &&
3141 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3142 (view == VIEW(REQ_VIEW_BLOB) &&
3143 view->parent == VIEW(REQ_VIEW_TREE))) {
3144 int line;
3146 view = view->parent;
3147 line = view->lineno;
3148 move_view(view, request);
3149 if (view_is_displayed(view))
3150 update_view_title(view);
3151 if (line != view->lineno)
3152 view->ops->request(view, REQ_ENTER,
3153 &view->line[view->lineno]);
3155 } else {
3156 move_view(view, request);
3157 }
3158 break;
3160 case REQ_VIEW_NEXT:
3161 {
3162 int nviews = displayed_views();
3163 int next_view = (current_view + 1) % nviews;
3165 if (next_view == current_view) {
3166 report("Only one view is displayed");
3167 break;
3168 }
3170 current_view = next_view;
3171 /* Blur out the title of the previous view. */
3172 update_view_title(view);
3173 report("");
3174 break;
3175 }
3176 case REQ_REFRESH:
3177 report("Refreshing is not yet supported for the %s view", view->name);
3178 break;
3180 case REQ_MAXIMIZE:
3181 if (displayed_views() == 2)
3182 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
3183 break;
3185 case REQ_TOGGLE_LINENO:
3186 toggle_view_option(&opt_line_number, "line numbers");
3187 break;
3189 case REQ_TOGGLE_DATE:
3190 toggle_view_option(&opt_date, "date display");
3191 break;
3193 case REQ_TOGGLE_AUTHOR:
3194 toggle_view_option(&opt_author, "author display");
3195 break;
3197 case REQ_TOGGLE_REV_GRAPH:
3198 toggle_view_option(&opt_rev_graph, "revision graph display");
3199 break;
3201 case REQ_TOGGLE_REFS:
3202 toggle_view_option(&opt_show_refs, "reference display");
3203 break;
3205 case REQ_SEARCH:
3206 case REQ_SEARCH_BACK:
3207 search_view(view, request);
3208 break;
3210 case REQ_FIND_NEXT:
3211 case REQ_FIND_PREV:
3212 find_next(view, request);
3213 break;
3215 case REQ_STOP_LOADING:
3216 for (i = 0; i < ARRAY_SIZE(views); i++) {
3217 view = &views[i];
3218 if (view->pipe)
3219 report("Stopped loading the %s view", view->name),
3220 end_update(view, TRUE);
3221 }
3222 break;
3224 case REQ_SHOW_VERSION:
3225 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3226 return TRUE;
3228 case REQ_SCREEN_REDRAW:
3229 redraw_display(TRUE);
3230 break;
3232 case REQ_EDIT:
3233 report("Nothing to edit");
3234 break;
3236 case REQ_ENTER:
3237 report("Nothing to enter");
3238 break;
3240 case REQ_VIEW_CLOSE:
3241 /* XXX: Mark closed views by letting view->parent point to the
3242 * view itself. Parents to closed view should never be
3243 * followed. */
3244 if (view->parent &&
3245 view->parent->parent != view->parent) {
3246 memset(display, 0, sizeof(display));
3247 current_view = 0;
3248 display[current_view] = view->parent;
3249 view->parent = view;
3250 resize_display();
3251 redraw_display(FALSE);
3252 report("");
3253 break;
3254 }
3255 /* Fall-through */
3256 case REQ_QUIT:
3257 return FALSE;
3259 default:
3260 report("Unknown key, press 'h' for help");
3261 return TRUE;
3262 }
3264 return TRUE;
3265 }
3268 /*
3269 * Pager backend
3270 */
3272 static bool
3273 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3274 {
3275 char *text = line->data;
3277 if (opt_line_number && draw_lineno(view, lineno))
3278 return TRUE;
3280 draw_text(view, line->type, text, TRUE);
3281 return TRUE;
3282 }
3284 static bool
3285 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3286 {
3287 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3288 char refbuf[SIZEOF_STR];
3289 char *ref = NULL;
3291 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3292 ref = chomp_string(refbuf);
3294 if (!ref || !*ref)
3295 return TRUE;
3297 /* This is the only fatal call, since it can "corrupt" the buffer. */
3298 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3299 return FALSE;
3301 return TRUE;
3302 }
3304 static void
3305 add_pager_refs(struct view *view, struct line *line)
3306 {
3307 char buf[SIZEOF_STR];
3308 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3309 struct ref **refs;
3310 size_t bufpos = 0, refpos = 0;
3311 const char *sep = "Refs: ";
3312 bool is_tag = FALSE;
3314 assert(line->type == LINE_COMMIT);
3316 refs = get_refs(commit_id);
3317 if (!refs) {
3318 if (view == VIEW(REQ_VIEW_DIFF))
3319 goto try_add_describe_ref;
3320 return;
3321 }
3323 do {
3324 struct ref *ref = refs[refpos];
3325 const char *fmt = ref->tag ? "%s[%s]" :
3326 ref->remote ? "%s<%s>" : "%s%s";
3328 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3329 return;
3330 sep = ", ";
3331 if (ref->tag)
3332 is_tag = TRUE;
3333 } while (refs[refpos++]->next);
3335 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3336 try_add_describe_ref:
3337 /* Add <tag>-g<commit_id> "fake" reference. */
3338 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3339 return;
3340 }
3342 if (bufpos == 0)
3343 return;
3345 add_line_text(view, buf, LINE_PP_REFS);
3346 }
3348 static bool
3349 pager_read(struct view *view, char *data)
3350 {
3351 struct line *line;
3353 if (!data)
3354 return TRUE;
3356 line = add_line_text(view, data, get_line_type(data));
3357 if (!line)
3358 return FALSE;
3360 if (line->type == LINE_COMMIT &&
3361 (view == VIEW(REQ_VIEW_DIFF) ||
3362 view == VIEW(REQ_VIEW_LOG)))
3363 add_pager_refs(view, line);
3365 return TRUE;
3366 }
3368 static enum request
3369 pager_request(struct view *view, enum request request, struct line *line)
3370 {
3371 int split = 0;
3373 if (request != REQ_ENTER)
3374 return request;
3376 if (line->type == LINE_COMMIT &&
3377 (view == VIEW(REQ_VIEW_LOG) ||
3378 view == VIEW(REQ_VIEW_PAGER))) {
3379 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3380 split = 1;
3381 }
3383 /* Always scroll the view even if it was split. That way
3384 * you can use Enter to scroll through the log view and
3385 * split open each commit diff. */
3386 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3388 /* FIXME: A minor workaround. Scrolling the view will call report("")
3389 * but if we are scrolling a non-current view this won't properly
3390 * update the view title. */
3391 if (split)
3392 update_view_title(view);
3394 return REQ_NONE;
3395 }
3397 static bool
3398 pager_grep(struct view *view, struct line *line)
3399 {
3400 regmatch_t pmatch;
3401 char *text = line->data;
3403 if (!*text)
3404 return FALSE;
3406 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3407 return FALSE;
3409 return TRUE;
3410 }
3412 static void
3413 pager_select(struct view *view, struct line *line)
3414 {
3415 if (line->type == LINE_COMMIT) {
3416 char *text = (char *)line->data + STRING_SIZE("commit ");
3418 if (view != VIEW(REQ_VIEW_PAGER))
3419 string_copy_rev(view->ref, text);
3420 string_copy_rev(ref_commit, text);
3421 }
3422 }
3424 static struct view_ops pager_ops = {
3425 "line",
3426 NULL,
3427 NULL,
3428 pager_read,
3429 pager_draw,
3430 pager_request,
3431 pager_grep,
3432 pager_select,
3433 };
3435 static const char *log_argv[SIZEOF_ARG] = {
3436 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3437 };
3439 static enum request
3440 log_request(struct view *view, enum request request, struct line *line)
3441 {
3442 switch (request) {
3443 case REQ_REFRESH:
3444 load_refs();
3445 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3446 return REQ_NONE;
3447 default:
3448 return pager_request(view, request, line);
3449 }
3450 }
3452 static struct view_ops log_ops = {
3453 "line",
3454 log_argv,
3455 NULL,
3456 pager_read,
3457 pager_draw,
3458 log_request,
3459 pager_grep,
3460 pager_select,
3461 };
3463 static const char *diff_argv[SIZEOF_ARG] = {
3464 "git", "show", "--pretty=fuller", "--no-color", "--root",
3465 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3466 };
3468 static struct view_ops diff_ops = {
3469 "line",
3470 diff_argv,
3471 NULL,
3472 pager_read,
3473 pager_draw,
3474 pager_request,
3475 pager_grep,
3476 pager_select,
3477 };
3479 /*
3480 * Help backend
3481 */
3483 static bool
3484 help_open(struct view *view)
3485 {
3486 int lines = ARRAY_SIZE(req_info) + 2;
3487 int i;
3489 if (view->lines > 0)
3490 return TRUE;
3492 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3493 if (!req_info[i].request)
3494 lines++;
3496 lines += run_requests + 1;
3498 view->line = calloc(lines, sizeof(*view->line));
3499 if (!view->line)
3500 return FALSE;
3502 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3504 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3505 const char *key;
3507 if (req_info[i].request == REQ_NONE)
3508 continue;
3510 if (!req_info[i].request) {
3511 add_line_text(view, "", LINE_DEFAULT);
3512 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3513 continue;
3514 }
3516 key = get_key(req_info[i].request);
3517 if (!*key)
3518 key = "(no key defined)";
3520 add_line_format(view, LINE_DEFAULT, " %-25s %s",
3521 key, req_info[i].help);
3522 }
3524 if (run_requests) {
3525 add_line_text(view, "", LINE_DEFAULT);
3526 add_line_text(view, "External commands:", LINE_DEFAULT);
3527 }
3529 for (i = 0; i < run_requests; i++) {
3530 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3531 const char *key;
3532 char cmd[SIZEOF_STR];
3533 size_t bufpos;
3534 int argc;
3536 if (!req)
3537 continue;
3539 key = get_key_name(req->key);
3540 if (!*key)
3541 key = "(no key defined)";
3543 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3544 if (!string_format_from(cmd, &bufpos, "%s%s",
3545 argc ? " " : "", req->argv[argc]))
3546 return REQ_NONE;
3548 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3549 keymap_table[req->keymap].name, key, cmd);
3550 }
3552 return TRUE;
3553 }
3555 static struct view_ops help_ops = {
3556 "line",
3557 NULL,
3558 help_open,
3559 NULL,
3560 pager_draw,
3561 pager_request,
3562 pager_grep,
3563 pager_select,
3564 };
3567 /*
3568 * Tree backend
3569 */
3571 struct tree_stack_entry {
3572 struct tree_stack_entry *prev; /* Entry below this in the stack */
3573 unsigned long lineno; /* Line number to restore */
3574 char *name; /* Position of name in opt_path */
3575 };
3577 /* The top of the path stack. */
3578 static struct tree_stack_entry *tree_stack = NULL;
3579 unsigned long tree_lineno = 0;
3581 static void
3582 pop_tree_stack_entry(void)
3583 {
3584 struct tree_stack_entry *entry = tree_stack;
3586 tree_lineno = entry->lineno;
3587 entry->name[0] = 0;
3588 tree_stack = entry->prev;
3589 free(entry);
3590 }
3592 static void
3593 push_tree_stack_entry(const char *name, unsigned long lineno)
3594 {
3595 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3596 size_t pathlen = strlen(opt_path);
3598 if (!entry)
3599 return;
3601 entry->prev = tree_stack;
3602 entry->name = opt_path + pathlen;
3603 tree_stack = entry;
3605 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3606 pop_tree_stack_entry();
3607 return;
3608 }
3610 /* Move the current line to the first tree entry. */
3611 tree_lineno = 1;
3612 entry->lineno = lineno;
3613 }
3615 /* Parse output from git-ls-tree(1):
3616 *
3617 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3618 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3619 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3620 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3621 */
3623 #define SIZEOF_TREE_ATTR \
3624 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3626 #define TREE_UP_FORMAT "040000 tree %s\t.."
3628 static const char *
3629 tree_path(struct line *line)
3630 {
3631 const char *path = line->data;
3633 return path + SIZEOF_TREE_ATTR;
3634 }
3636 static int
3637 tree_compare_entry(struct line *line1, struct line *line2)
3638 {
3639 if (line1->type != line2->type)
3640 return line1->type == LINE_TREE_DIR ? -1 : 1;
3641 return strcmp(tree_path(line1), tree_path(line2));
3642 }
3644 static bool
3645 tree_read(struct view *view, char *text)
3646 {
3647 size_t textlen = text ? strlen(text) : 0;
3648 struct line *entry, *line;
3649 enum line_type type;
3651 if (!text)
3652 return TRUE;
3653 if (textlen <= SIZEOF_TREE_ATTR)
3654 return FALSE;
3656 type = text[STRING_SIZE("100644 ")] == 't'
3657 ? LINE_TREE_DIR : LINE_TREE_FILE;
3659 if (view->lines == 0 &&
3660 !add_line_format(view, LINE_DEFAULT, "Directory path /%s", opt_path))
3661 return FALSE;
3663 /* Strip the path part ... */
3664 if (*opt_path) {
3665 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3666 size_t striplen = strlen(opt_path);
3667 char *path = text + SIZEOF_TREE_ATTR;
3669 if (pathlen > striplen)
3670 memmove(path, path + striplen,
3671 pathlen - striplen + 1);
3673 /* Insert "link" to parent directory. */
3674 if (view->lines == 1 &&
3675 !add_line_format(view, LINE_TREE_DIR, TREE_UP_FORMAT, view->ref))
3676 return FALSE;
3677 }
3679 entry = add_line_text(view, text, type);
3680 if (!entry)
3681 return FALSE;
3682 text = entry->data;
3684 /* Skip "Directory ..." and ".." line. */
3685 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3686 if (tree_compare_entry(line, entry) <= 0)
3687 continue;
3689 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3691 line->data = text;
3692 line->type = type;
3693 for (; line <= entry; line++)
3694 line->dirty = line->cleareol = 1;
3695 return TRUE;
3696 }
3698 if (tree_lineno > view->lineno) {
3699 view->lineno = tree_lineno;
3700 tree_lineno = 0;
3701 }
3703 return TRUE;
3704 }
3706 static void
3707 open_blob_editor()
3708 {
3709 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3710 int fd = mkstemp(file);
3712 if (fd == -1)
3713 report("Failed to create temporary file");
3714 else if (!run_io_append(blob_ops.argv, FORMAT_ALL, fd))
3715 report("Failed to save blob data to file");
3716 else
3717 open_editor(FALSE, file);
3718 if (fd != -1)
3719 unlink(file);
3720 }
3722 static enum request
3723 tree_request(struct view *view, enum request request, struct line *line)
3724 {
3725 enum open_flags flags;
3727 switch (request) {
3728 case REQ_VIEW_BLAME:
3729 if (line->type != LINE_TREE_FILE) {
3730 report("Blame only supported for files");
3731 return REQ_NONE;
3732 }
3734 string_copy(opt_ref, view->vid);
3735 return request;
3737 case REQ_EDIT:
3738 if (line->type != LINE_TREE_FILE) {
3739 report("Edit only supported for files");
3740 } else if (!is_head_commit(view->vid)) {
3741 open_blob_editor();
3742 } else {
3743 open_editor(TRUE, opt_file);
3744 }
3745 return REQ_NONE;
3747 case REQ_TREE_PARENT:
3748 if (!*opt_path) {
3749 /* quit view if at top of tree */
3750 return REQ_VIEW_CLOSE;
3751 }
3752 /* fake 'cd ..' */
3753 line = &view->line[1];
3754 break;
3756 case REQ_ENTER:
3757 break;
3759 default:
3760 return request;
3761 }
3763 /* Cleanup the stack if the tree view is at a different tree. */
3764 while (!*opt_path && tree_stack)
3765 pop_tree_stack_entry();
3767 switch (line->type) {
3768 case LINE_TREE_DIR:
3769 /* Depending on whether it is a subdir or parent (updir?) link
3770 * mangle the path buffer. */
3771 if (line == &view->line[1] && *opt_path) {
3772 pop_tree_stack_entry();
3774 } else {
3775 const char *basename = tree_path(line);
3777 push_tree_stack_entry(basename, view->lineno);
3778 }
3780 /* Trees and subtrees share the same ID, so they are not not
3781 * unique like blobs. */
3782 flags = OPEN_RELOAD;
3783 request = REQ_VIEW_TREE;
3784 break;
3786 case LINE_TREE_FILE:
3787 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3788 request = REQ_VIEW_BLOB;
3789 break;
3791 default:
3792 return TRUE;
3793 }
3795 open_view(view, request, flags);
3796 if (request == REQ_VIEW_TREE) {
3797 view->lineno = tree_lineno;
3798 }
3800 return REQ_NONE;
3801 }
3803 static void
3804 tree_select(struct view *view, struct line *line)
3805 {
3806 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3808 if (line->type == LINE_TREE_FILE) {
3809 string_copy_rev(ref_blob, text);
3810 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3812 } else if (line->type != LINE_TREE_DIR) {
3813 return;
3814 }
3816 string_copy_rev(view->ref, text);
3817 }
3819 static const char *tree_argv[SIZEOF_ARG] = {
3820 "git", "ls-tree", "%(commit)", "%(directory)", NULL
3821 };
3823 static struct view_ops tree_ops = {
3824 "file",
3825 tree_argv,
3826 NULL,
3827 tree_read,
3828 pager_draw,
3829 tree_request,
3830 pager_grep,
3831 tree_select,
3832 };
3834 static bool
3835 blob_read(struct view *view, char *line)
3836 {
3837 if (!line)
3838 return TRUE;
3839 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3840 }
3842 static enum request
3843 blob_request(struct view *view, enum request request, struct line *line)
3844 {
3845 switch (request) {
3846 case REQ_EDIT:
3847 open_blob_editor();
3848 return REQ_NONE;
3849 default:
3850 return pager_request(view, request, line);
3851 }
3852 }
3854 static const char *blob_argv[SIZEOF_ARG] = {
3855 "git", "cat-file", "blob", "%(blob)", NULL
3856 };
3858 static struct view_ops blob_ops = {
3859 "line",
3860 blob_argv,
3861 NULL,
3862 blob_read,
3863 pager_draw,
3864 blob_request,
3865 pager_grep,
3866 pager_select,
3867 };
3869 /*
3870 * Blame backend
3871 *
3872 * Loading the blame view is a two phase job:
3873 *
3874 * 1. File content is read either using opt_file from the
3875 * filesystem or using git-cat-file.
3876 * 2. Then blame information is incrementally added by
3877 * reading output from git-blame.
3878 */
3880 static const char *blame_head_argv[] = {
3881 "git", "blame", "--incremental", "--", "%(file)", NULL
3882 };
3884 static const char *blame_ref_argv[] = {
3885 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
3886 };
3888 static const char *blame_cat_file_argv[] = {
3889 "git", "cat-file", "blob", "%(ref):%(file)", NULL
3890 };
3892 struct blame_commit {
3893 char id[SIZEOF_REV]; /* SHA1 ID. */
3894 char title[128]; /* First line of the commit message. */
3895 char author[75]; /* Author of the commit. */
3896 struct tm time; /* Date from the author ident. */
3897 char filename[128]; /* Name of file. */
3898 };
3900 struct blame {
3901 struct blame_commit *commit;
3902 char text[1];
3903 };
3905 static bool
3906 blame_open(struct view *view)
3907 {
3908 if (*opt_ref || !io_open(&view->io, opt_file)) {
3909 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
3910 return FALSE;
3911 }
3913 setup_update(view, opt_file);
3914 string_format(view->ref, "%s ...", opt_file);
3916 return TRUE;
3917 }
3919 static struct blame_commit *
3920 get_blame_commit(struct view *view, const char *id)
3921 {
3922 size_t i;
3924 for (i = 0; i < view->lines; i++) {
3925 struct blame *blame = view->line[i].data;
3927 if (!blame->commit)
3928 continue;
3930 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3931 return blame->commit;
3932 }
3934 {
3935 struct blame_commit *commit = calloc(1, sizeof(*commit));
3937 if (commit)
3938 string_ncopy(commit->id, id, SIZEOF_REV);
3939 return commit;
3940 }
3941 }
3943 static bool
3944 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3945 {
3946 const char *pos = *posref;
3948 *posref = NULL;
3949 pos = strchr(pos + 1, ' ');
3950 if (!pos || !isdigit(pos[1]))
3951 return FALSE;
3952 *number = atoi(pos + 1);
3953 if (*number < min || *number > max)
3954 return FALSE;
3956 *posref = pos;
3957 return TRUE;
3958 }
3960 static struct blame_commit *
3961 parse_blame_commit(struct view *view, const char *text, int *blamed)
3962 {
3963 struct blame_commit *commit;
3964 struct blame *blame;
3965 const char *pos = text + SIZEOF_REV - 1;
3966 size_t lineno;
3967 size_t group;
3969 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3970 return NULL;
3972 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3973 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3974 return NULL;
3976 commit = get_blame_commit(view, text);
3977 if (!commit)
3978 return NULL;
3980 *blamed += group;
3981 while (group--) {
3982 struct line *line = &view->line[lineno + group - 1];
3984 blame = line->data;
3985 blame->commit = commit;
3986 line->dirty = 1;
3987 }
3989 return commit;
3990 }
3992 static bool
3993 blame_read_file(struct view *view, const char *line, bool *read_file)
3994 {
3995 if (!line) {
3996 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
3997 struct io io = {};
3999 if (view->lines == 0 && !view->parent)
4000 die("No blame exist for %s", view->vid);
4002 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
4003 report("Failed to load blame data");
4004 return TRUE;
4005 }
4007 done_io(view->pipe);
4008 view->io = io;
4009 *read_file = FALSE;
4010 return FALSE;
4012 } else {
4013 size_t linelen = strlen(line);
4014 struct blame *blame = malloc(sizeof(*blame) + linelen);
4016 blame->commit = NULL;
4017 strncpy(blame->text, line, linelen);
4018 blame->text[linelen] = 0;
4019 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4020 }
4021 }
4023 static bool
4024 match_blame_header(const char *name, char **line)
4025 {
4026 size_t namelen = strlen(name);
4027 bool matched = !strncmp(name, *line, namelen);
4029 if (matched)
4030 *line += namelen;
4032 return matched;
4033 }
4035 static bool
4036 blame_read(struct view *view, char *line)
4037 {
4038 static struct blame_commit *commit = NULL;
4039 static int blamed = 0;
4040 static time_t author_time;
4041 static bool read_file = TRUE;
4043 if (read_file)
4044 return blame_read_file(view, line, &read_file);
4046 if (!line) {
4047 /* Reset all! */
4048 commit = NULL;
4049 blamed = 0;
4050 read_file = TRUE;
4051 string_format(view->ref, "%s", view->vid);
4052 if (view_is_displayed(view)) {
4053 update_view_title(view);
4054 redraw_view_from(view, 0);
4055 }
4056 return TRUE;
4057 }
4059 if (!commit) {
4060 commit = parse_blame_commit(view, line, &blamed);
4061 string_format(view->ref, "%s %2d%%", view->vid,
4062 blamed * 100 / view->lines);
4064 } else if (match_blame_header("author ", &line)) {
4065 string_ncopy(commit->author, line, strlen(line));
4067 } else if (match_blame_header("author-time ", &line)) {
4068 author_time = (time_t) atol(line);
4070 } else if (match_blame_header("author-tz ", &line)) {
4071 long tz;
4073 tz = ('0' - line[1]) * 60 * 60 * 10;
4074 tz += ('0' - line[2]) * 60 * 60;
4075 tz += ('0' - line[3]) * 60;
4076 tz += ('0' - line[4]) * 60;
4078 if (line[0] == '-')
4079 tz = -tz;
4081 author_time -= tz;
4082 gmtime_r(&author_time, &commit->time);
4084 } else if (match_blame_header("summary ", &line)) {
4085 string_ncopy(commit->title, line, strlen(line));
4087 } else if (match_blame_header("filename ", &line)) {
4088 string_ncopy(commit->filename, line, strlen(line));
4089 commit = NULL;
4090 }
4092 return TRUE;
4093 }
4095 static bool
4096 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4097 {
4098 struct blame *blame = line->data;
4099 struct tm *time = NULL;
4100 const char *id = NULL, *author = NULL;
4102 if (blame->commit && *blame->commit->filename) {
4103 id = blame->commit->id;
4104 author = blame->commit->author;
4105 time = &blame->commit->time;
4106 }
4108 if (opt_date && draw_date(view, time))
4109 return TRUE;
4111 if (opt_author &&
4112 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
4113 return TRUE;
4115 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4116 return TRUE;
4118 if (draw_lineno(view, lineno))
4119 return TRUE;
4121 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
4122 return TRUE;
4123 }
4125 static bool
4126 check_blame_commit(struct blame *blame)
4127 {
4128 if (!blame->commit)
4129 report("Commit data not loaded yet");
4130 else if (!strcmp(blame->commit->id, NULL_ID))
4131 report("No commit exist for the selected line");
4132 else
4133 return TRUE;
4134 return FALSE;
4135 }
4137 static enum request
4138 blame_request(struct view *view, enum request request, struct line *line)
4139 {
4140 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4141 struct blame *blame = line->data;
4143 switch (request) {
4144 case REQ_VIEW_BLAME:
4145 if (check_blame_commit(blame)) {
4146 string_copy(opt_ref, blame->commit->id);
4147 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4148 }
4149 break;
4151 case REQ_ENTER:
4152 if (!blame->commit) {
4153 report("No commit loaded yet");
4154 break;
4155 }
4157 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4158 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4159 break;
4161 if (!strcmp(blame->commit->id, NULL_ID)) {
4162 struct view *diff = VIEW(REQ_VIEW_DIFF);
4163 const char *diff_index_argv[] = {
4164 "git", "diff-index", "--root", "--cached",
4165 "--patch-with-stat", "-C", "-M",
4166 "HEAD", "--", view->vid, NULL
4167 };
4169 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4170 report("Failed to allocate diff command");
4171 break;
4172 }
4173 flags |= OPEN_PREPARED;
4174 }
4176 open_view(view, REQ_VIEW_DIFF, flags);
4177 break;
4179 default:
4180 return request;
4181 }
4183 return REQ_NONE;
4184 }
4186 static bool
4187 blame_grep(struct view *view, struct line *line)
4188 {
4189 struct blame *blame = line->data;
4190 struct blame_commit *commit = blame->commit;
4191 regmatch_t pmatch;
4193 #define MATCH(text, on) \
4194 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4196 if (commit) {
4197 char buf[DATE_COLS + 1];
4199 if (MATCH(commit->title, 1) ||
4200 MATCH(commit->author, opt_author) ||
4201 MATCH(commit->id, opt_date))
4202 return TRUE;
4204 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
4205 MATCH(buf, 1))
4206 return TRUE;
4207 }
4209 return MATCH(blame->text, 1);
4211 #undef MATCH
4212 }
4214 static void
4215 blame_select(struct view *view, struct line *line)
4216 {
4217 struct blame *blame = line->data;
4218 struct blame_commit *commit = blame->commit;
4220 if (!commit)
4221 return;
4223 if (!strcmp(commit->id, NULL_ID))
4224 string_ncopy(ref_commit, "HEAD", 4);
4225 else
4226 string_copy_rev(ref_commit, commit->id);
4227 }
4229 static struct view_ops blame_ops = {
4230 "line",
4231 NULL,
4232 blame_open,
4233 blame_read,
4234 blame_draw,
4235 blame_request,
4236 blame_grep,
4237 blame_select,
4238 };
4240 /*
4241 * Status backend
4242 */
4244 struct status {
4245 char status;
4246 struct {
4247 mode_t mode;
4248 char rev[SIZEOF_REV];
4249 char name[SIZEOF_STR];
4250 } old;
4251 struct {
4252 mode_t mode;
4253 char rev[SIZEOF_REV];
4254 char name[SIZEOF_STR];
4255 } new;
4256 };
4258 static char status_onbranch[SIZEOF_STR];
4259 static struct status stage_status;
4260 static enum line_type stage_line_type;
4261 static size_t stage_chunks;
4262 static int *stage_chunk;
4264 /* This should work even for the "On branch" line. */
4265 static inline bool
4266 status_has_none(struct view *view, struct line *line)
4267 {
4268 return line < view->line + view->lines && !line[1].data;
4269 }
4271 /* Get fields from the diff line:
4272 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4273 */
4274 static inline bool
4275 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4276 {
4277 const char *old_mode = buf + 1;
4278 const char *new_mode = buf + 8;
4279 const char *old_rev = buf + 15;
4280 const char *new_rev = buf + 56;
4281 const char *status = buf + 97;
4283 if (bufsize < 98 ||
4284 old_mode[-1] != ':' ||
4285 new_mode[-1] != ' ' ||
4286 old_rev[-1] != ' ' ||
4287 new_rev[-1] != ' ' ||
4288 status[-1] != ' ')
4289 return FALSE;
4291 file->status = *status;
4293 string_copy_rev(file->old.rev, old_rev);
4294 string_copy_rev(file->new.rev, new_rev);
4296 file->old.mode = strtoul(old_mode, NULL, 8);
4297 file->new.mode = strtoul(new_mode, NULL, 8);
4299 file->old.name[0] = file->new.name[0] = 0;
4301 return TRUE;
4302 }
4304 static bool
4305 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4306 {
4307 struct status *file = NULL;
4308 struct status *unmerged = NULL;
4309 char *buf;
4310 struct io io = {};
4312 if (!run_io(&io, argv, NULL, IO_RD))
4313 return FALSE;
4315 add_line_data(view, NULL, type);
4317 while ((buf = io_get(&io, 0, TRUE))) {
4318 if (!file) {
4319 file = calloc(1, sizeof(*file));
4320 if (!file || !add_line_data(view, file, type))
4321 goto error_out;
4322 }
4324 /* Parse diff info part. */
4325 if (status) {
4326 file->status = status;
4327 if (status == 'A')
4328 string_copy(file->old.rev, NULL_ID);
4330 } else if (!file->status) {
4331 if (!status_get_diff(file, buf, strlen(buf)))
4332 goto error_out;
4334 buf = io_get(&io, 0, TRUE);
4335 if (!buf)
4336 break;
4338 /* Collapse all 'M'odified entries that follow a
4339 * associated 'U'nmerged entry. */
4340 if (file->status == 'U') {
4341 unmerged = file;
4343 } else if (unmerged) {
4344 int collapse = !strcmp(buf, unmerged->new.name);
4346 unmerged = NULL;
4347 if (collapse) {
4348 free(file);
4349 view->lines--;
4350 continue;
4351 }
4352 }
4353 }
4355 /* Grab the old name for rename/copy. */
4356 if (!*file->old.name &&
4357 (file->status == 'R' || file->status == 'C')) {
4358 string_ncopy(file->old.name, buf, strlen(buf));
4360 buf = io_get(&io, 0, TRUE);
4361 if (!buf)
4362 break;
4363 }
4365 /* git-ls-files just delivers a NUL separated list of
4366 * file names similar to the second half of the
4367 * git-diff-* output. */
4368 string_ncopy(file->new.name, buf, strlen(buf));
4369 if (!*file->old.name)
4370 string_copy(file->old.name, file->new.name);
4371 file = NULL;
4372 }
4374 if (io_error(&io)) {
4375 error_out:
4376 done_io(&io);
4377 return FALSE;
4378 }
4380 if (!view->line[view->lines - 1].data)
4381 add_line_data(view, NULL, LINE_STAT_NONE);
4383 done_io(&io);
4384 return TRUE;
4385 }
4387 /* Don't show unmerged entries in the staged section. */
4388 static const char *status_diff_index_argv[] = {
4389 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4390 "--cached", "-M", "HEAD", NULL
4391 };
4393 static const char *status_diff_files_argv[] = {
4394 "git", "diff-files", "-z", NULL
4395 };
4397 static const char *status_list_other_argv[] = {
4398 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4399 };
4401 static const char *status_list_no_head_argv[] = {
4402 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4403 };
4405 static const char *update_index_argv[] = {
4406 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4407 };
4409 /* Restore the previous line number to stay in the context or select a
4410 * line with something that can be updated. */
4411 static void
4412 status_restore(struct view *view)
4413 {
4414 if (view->p_lineno >= view->lines)
4415 view->p_lineno = view->lines - 1;
4416 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4417 view->p_lineno++;
4418 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4419 view->p_lineno--;
4421 /* If the above fails, always skip the "On branch" line. */
4422 if (view->p_lineno < view->lines)
4423 view->lineno = view->p_lineno;
4424 else
4425 view->lineno = 1;
4427 if (view->lineno < view->offset)
4428 view->offset = view->lineno;
4429 else if (view->offset + view->height <= view->lineno)
4430 view->offset = view->lineno - view->height + 1;
4432 view->p_restore = FALSE;
4433 }
4435 /* First parse staged info using git-diff-index(1), then parse unstaged
4436 * info using git-diff-files(1), and finally untracked files using
4437 * git-ls-files(1). */
4438 static bool
4439 status_open(struct view *view)
4440 {
4441 reset_view(view);
4443 add_line_data(view, NULL, LINE_STAT_HEAD);
4444 if (is_initial_commit())
4445 string_copy(status_onbranch, "Initial commit");
4446 else if (!*opt_head)
4447 string_copy(status_onbranch, "Not currently on any branch");
4448 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4449 return FALSE;
4451 run_io_bg(update_index_argv);
4453 if (is_initial_commit()) {
4454 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4455 return FALSE;
4456 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4457 return FALSE;
4458 }
4460 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4461 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4462 return FALSE;
4464 /* Restore the exact position or use the specialized restore
4465 * mode? */
4466 if (!view->p_restore)
4467 status_restore(view);
4468 return TRUE;
4469 }
4471 static bool
4472 status_draw(struct view *view, struct line *line, unsigned int lineno)
4473 {
4474 struct status *status = line->data;
4475 enum line_type type;
4476 const char *text;
4478 if (!status) {
4479 switch (line->type) {
4480 case LINE_STAT_STAGED:
4481 type = LINE_STAT_SECTION;
4482 text = "Changes to be committed:";
4483 break;
4485 case LINE_STAT_UNSTAGED:
4486 type = LINE_STAT_SECTION;
4487 text = "Changed but not updated:";
4488 break;
4490 case LINE_STAT_UNTRACKED:
4491 type = LINE_STAT_SECTION;
4492 text = "Untracked files:";
4493 break;
4495 case LINE_STAT_NONE:
4496 type = LINE_DEFAULT;
4497 text = " (no files)";
4498 break;
4500 case LINE_STAT_HEAD:
4501 type = LINE_STAT_HEAD;
4502 text = status_onbranch;
4503 break;
4505 default:
4506 return FALSE;
4507 }
4508 } else {
4509 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4511 buf[0] = status->status;
4512 if (draw_text(view, line->type, buf, TRUE))
4513 return TRUE;
4514 type = LINE_DEFAULT;
4515 text = status->new.name;
4516 }
4518 draw_text(view, type, text, TRUE);
4519 return TRUE;
4520 }
4522 static enum request
4523 status_enter(struct view *view, struct line *line)
4524 {
4525 struct status *status = line->data;
4526 const char *oldpath = status ? status->old.name : NULL;
4527 /* Diffs for unmerged entries are empty when passing the new
4528 * path, so leave it empty. */
4529 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4530 const char *info;
4531 enum open_flags split;
4532 struct view *stage = VIEW(REQ_VIEW_STAGE);
4534 if (line->type == LINE_STAT_NONE ||
4535 (!status && line[1].type == LINE_STAT_NONE)) {
4536 report("No file to diff");
4537 return REQ_NONE;
4538 }
4540 switch (line->type) {
4541 case LINE_STAT_STAGED:
4542 if (is_initial_commit()) {
4543 const char *no_head_diff_argv[] = {
4544 "git", "diff", "--no-color", "--patch-with-stat",
4545 "--", "/dev/null", newpath, NULL
4546 };
4548 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4549 return REQ_QUIT;
4550 } else {
4551 const char *index_show_argv[] = {
4552 "git", "diff-index", "--root", "--patch-with-stat",
4553 "-C", "-M", "--cached", "HEAD", "--",
4554 oldpath, newpath, NULL
4555 };
4557 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4558 return REQ_QUIT;
4559 }
4561 if (status)
4562 info = "Staged changes to %s";
4563 else
4564 info = "Staged changes";
4565 break;
4567 case LINE_STAT_UNSTAGED:
4568 {
4569 const char *files_show_argv[] = {
4570 "git", "diff-files", "--root", "--patch-with-stat",
4571 "-C", "-M", "--", oldpath, newpath, NULL
4572 };
4574 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
4575 return REQ_QUIT;
4576 if (status)
4577 info = "Unstaged changes to %s";
4578 else
4579 info = "Unstaged changes";
4580 break;
4581 }
4582 case LINE_STAT_UNTRACKED:
4583 if (!newpath) {
4584 report("No file to show");
4585 return REQ_NONE;
4586 }
4588 if (!suffixcmp(status->new.name, -1, "/")) {
4589 report("Cannot display a directory");
4590 return REQ_NONE;
4591 }
4593 if (!prepare_update_file(stage, newpath))
4594 return REQ_QUIT;
4595 info = "Untracked file %s";
4596 break;
4598 case LINE_STAT_HEAD:
4599 return REQ_NONE;
4601 default:
4602 die("line type %d not handled in switch", line->type);
4603 }
4605 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4606 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
4607 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4608 if (status) {
4609 stage_status = *status;
4610 } else {
4611 memset(&stage_status, 0, sizeof(stage_status));
4612 }
4614 stage_line_type = line->type;
4615 stage_chunks = 0;
4616 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4617 }
4619 return REQ_NONE;
4620 }
4622 static bool
4623 status_exists(struct status *status, enum line_type type)
4624 {
4625 struct view *view = VIEW(REQ_VIEW_STATUS);
4626 unsigned long lineno;
4628 for (lineno = 0; lineno < view->lines; lineno++) {
4629 struct line *line = &view->line[lineno];
4630 struct status *pos = line->data;
4632 if (line->type != type)
4633 continue;
4634 if (!pos && (!status || !status->status) && line[1].data) {
4635 select_view_line(view, lineno);
4636 return TRUE;
4637 }
4638 if (pos && !strcmp(status->new.name, pos->new.name)) {
4639 select_view_line(view, lineno);
4640 return TRUE;
4641 }
4642 }
4644 return FALSE;
4645 }
4648 static bool
4649 status_update_prepare(struct io *io, enum line_type type)
4650 {
4651 const char *staged_argv[] = {
4652 "git", "update-index", "-z", "--index-info", NULL
4653 };
4654 const char *others_argv[] = {
4655 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
4656 };
4658 switch (type) {
4659 case LINE_STAT_STAGED:
4660 return run_io(io, staged_argv, opt_cdup, IO_WR);
4662 case LINE_STAT_UNSTAGED:
4663 return run_io(io, others_argv, opt_cdup, IO_WR);
4665 case LINE_STAT_UNTRACKED:
4666 return run_io(io, others_argv, NULL, IO_WR);
4668 default:
4669 die("line type %d not handled in switch", type);
4670 return FALSE;
4671 }
4672 }
4674 static bool
4675 status_update_write(struct io *io, struct status *status, enum line_type type)
4676 {
4677 char buf[SIZEOF_STR];
4678 size_t bufsize = 0;
4680 switch (type) {
4681 case LINE_STAT_STAGED:
4682 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4683 status->old.mode,
4684 status->old.rev,
4685 status->old.name, 0))
4686 return FALSE;
4687 break;
4689 case LINE_STAT_UNSTAGED:
4690 case LINE_STAT_UNTRACKED:
4691 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4692 return FALSE;
4693 break;
4695 default:
4696 die("line type %d not handled in switch", type);
4697 }
4699 return io_write(io, buf, bufsize);
4700 }
4702 static bool
4703 status_update_file(struct status *status, enum line_type type)
4704 {
4705 struct io io = {};
4706 bool result;
4708 if (!status_update_prepare(&io, type))
4709 return FALSE;
4711 result = status_update_write(&io, status, type);
4712 done_io(&io);
4713 return result;
4714 }
4716 static bool
4717 status_update_files(struct view *view, struct line *line)
4718 {
4719 struct io io = {};
4720 bool result = TRUE;
4721 struct line *pos = view->line + view->lines;
4722 int files = 0;
4723 int file, done;
4725 if (!status_update_prepare(&io, line->type))
4726 return FALSE;
4728 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4729 files++;
4731 for (file = 0, done = 0; result && file < files; line++, file++) {
4732 int almost_done = file * 100 / files;
4734 if (almost_done > done) {
4735 done = almost_done;
4736 string_format(view->ref, "updating file %u of %u (%d%% done)",
4737 file, files, done);
4738 update_view_title(view);
4739 }
4740 result = status_update_write(&io, line->data, line->type);
4741 }
4743 done_io(&io);
4744 return result;
4745 }
4747 static bool
4748 status_update(struct view *view)
4749 {
4750 struct line *line = &view->line[view->lineno];
4752 assert(view->lines);
4754 if (!line->data) {
4755 /* This should work even for the "On branch" line. */
4756 if (line < view->line + view->lines && !line[1].data) {
4757 report("Nothing to update");
4758 return FALSE;
4759 }
4761 if (!status_update_files(view, line + 1)) {
4762 report("Failed to update file status");
4763 return FALSE;
4764 }
4766 } else if (!status_update_file(line->data, line->type)) {
4767 report("Failed to update file status");
4768 return FALSE;
4769 }
4771 return TRUE;
4772 }
4774 static bool
4775 status_revert(struct status *status, enum line_type type, bool has_none)
4776 {
4777 if (!status || type != LINE_STAT_UNSTAGED) {
4778 if (type == LINE_STAT_STAGED) {
4779 report("Cannot revert changes to staged files");
4780 } else if (type == LINE_STAT_UNTRACKED) {
4781 report("Cannot revert changes to untracked files");
4782 } else if (has_none) {
4783 report("Nothing to revert");
4784 } else {
4785 report("Cannot revert changes to multiple files");
4786 }
4787 return FALSE;
4789 } else {
4790 const char *checkout_argv[] = {
4791 "git", "checkout", "--", status->old.name, NULL
4792 };
4794 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
4795 return FALSE;
4796 return run_io_fg(checkout_argv, opt_cdup);
4797 }
4798 }
4800 static enum request
4801 status_request(struct view *view, enum request request, struct line *line)
4802 {
4803 struct status *status = line->data;
4805 switch (request) {
4806 case REQ_STATUS_UPDATE:
4807 if (!status_update(view))
4808 return REQ_NONE;
4809 break;
4811 case REQ_STATUS_REVERT:
4812 if (!status_revert(status, line->type, status_has_none(view, line)))
4813 return REQ_NONE;
4814 break;
4816 case REQ_STATUS_MERGE:
4817 if (!status || status->status != 'U') {
4818 report("Merging only possible for files with unmerged status ('U').");
4819 return REQ_NONE;
4820 }
4821 open_mergetool(status->new.name);
4822 break;
4824 case REQ_EDIT:
4825 if (!status)
4826 return request;
4827 if (status->status == 'D') {
4828 report("File has been deleted.");
4829 return REQ_NONE;
4830 }
4832 open_editor(status->status != '?', status->new.name);
4833 break;
4835 case REQ_VIEW_BLAME:
4836 if (status) {
4837 string_copy(opt_file, status->new.name);
4838 opt_ref[0] = 0;
4839 }
4840 return request;
4842 case REQ_ENTER:
4843 /* After returning the status view has been split to
4844 * show the stage view. No further reloading is
4845 * necessary. */
4846 status_enter(view, line);
4847 return REQ_NONE;
4849 case REQ_REFRESH:
4850 /* Simply reload the view. */
4851 break;
4853 default:
4854 return request;
4855 }
4857 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4859 return REQ_NONE;
4860 }
4862 static void
4863 status_select(struct view *view, struct line *line)
4864 {
4865 struct status *status = line->data;
4866 char file[SIZEOF_STR] = "all files";
4867 const char *text;
4868 const char *key;
4870 if (status && !string_format(file, "'%s'", status->new.name))
4871 return;
4873 if (!status && line[1].type == LINE_STAT_NONE)
4874 line++;
4876 switch (line->type) {
4877 case LINE_STAT_STAGED:
4878 text = "Press %s to unstage %s for commit";
4879 break;
4881 case LINE_STAT_UNSTAGED:
4882 text = "Press %s to stage %s for commit";
4883 break;
4885 case LINE_STAT_UNTRACKED:
4886 text = "Press %s to stage %s for addition";
4887 break;
4889 case LINE_STAT_HEAD:
4890 case LINE_STAT_NONE:
4891 text = "Nothing to update";
4892 break;
4894 default:
4895 die("line type %d not handled in switch", line->type);
4896 }
4898 if (status && status->status == 'U') {
4899 text = "Press %s to resolve conflict in %s";
4900 key = get_key(REQ_STATUS_MERGE);
4902 } else {
4903 key = get_key(REQ_STATUS_UPDATE);
4904 }
4906 string_format(view->ref, text, key, file);
4907 }
4909 static bool
4910 status_grep(struct view *view, struct line *line)
4911 {
4912 struct status *status = line->data;
4913 enum { S_STATUS, S_NAME, S_END } state;
4914 char buf[2] = "?";
4915 regmatch_t pmatch;
4917 if (!status)
4918 return FALSE;
4920 for (state = S_STATUS; state < S_END; state++) {
4921 const char *text;
4923 switch (state) {
4924 case S_NAME: text = status->new.name; break;
4925 case S_STATUS:
4926 buf[0] = status->status;
4927 text = buf;
4928 break;
4930 default:
4931 return FALSE;
4932 }
4934 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4935 return TRUE;
4936 }
4938 return FALSE;
4939 }
4941 static struct view_ops status_ops = {
4942 "file",
4943 NULL,
4944 status_open,
4945 NULL,
4946 status_draw,
4947 status_request,
4948 status_grep,
4949 status_select,
4950 };
4953 static bool
4954 stage_diff_write(struct io *io, struct line *line, struct line *end)
4955 {
4956 while (line < end) {
4957 if (!io_write(io, line->data, strlen(line->data)) ||
4958 !io_write(io, "\n", 1))
4959 return FALSE;
4960 line++;
4961 if (line->type == LINE_DIFF_CHUNK ||
4962 line->type == LINE_DIFF_HEADER)
4963 break;
4964 }
4966 return TRUE;
4967 }
4969 static struct line *
4970 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4971 {
4972 for (; view->line < line; line--)
4973 if (line->type == type)
4974 return line;
4976 return NULL;
4977 }
4979 static bool
4980 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
4981 {
4982 const char *apply_argv[SIZEOF_ARG] = {
4983 "git", "apply", "--whitespace=nowarn", NULL
4984 };
4985 struct line *diff_hdr;
4986 struct io io = {};
4987 int argc = 3;
4989 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4990 if (!diff_hdr)
4991 return FALSE;
4993 if (!revert)
4994 apply_argv[argc++] = "--cached";
4995 if (revert || stage_line_type == LINE_STAT_STAGED)
4996 apply_argv[argc++] = "-R";
4997 apply_argv[argc++] = "-";
4998 apply_argv[argc++] = NULL;
4999 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5000 return FALSE;
5002 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5003 !stage_diff_write(&io, chunk, view->line + view->lines))
5004 chunk = NULL;
5006 done_io(&io);
5007 run_io_bg(update_index_argv);
5009 return chunk ? TRUE : FALSE;
5010 }
5012 static bool
5013 stage_update(struct view *view, struct line *line)
5014 {
5015 struct line *chunk = NULL;
5017 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5018 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5020 if (chunk) {
5021 if (!stage_apply_chunk(view, chunk, FALSE)) {
5022 report("Failed to apply chunk");
5023 return FALSE;
5024 }
5026 } else if (!stage_status.status) {
5027 view = VIEW(REQ_VIEW_STATUS);
5029 for (line = view->line; line < view->line + view->lines; line++)
5030 if (line->type == stage_line_type)
5031 break;
5033 if (!status_update_files(view, line + 1)) {
5034 report("Failed to update files");
5035 return FALSE;
5036 }
5038 } else if (!status_update_file(&stage_status, stage_line_type)) {
5039 report("Failed to update file");
5040 return FALSE;
5041 }
5043 return TRUE;
5044 }
5046 static bool
5047 stage_revert(struct view *view, struct line *line)
5048 {
5049 struct line *chunk = NULL;
5051 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5052 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5054 if (chunk) {
5055 if (!prompt_yesno("Are you sure you want to revert changes?"))
5056 return FALSE;
5058 if (!stage_apply_chunk(view, chunk, TRUE)) {
5059 report("Failed to revert chunk");
5060 return FALSE;
5061 }
5062 return TRUE;
5064 } else {
5065 return status_revert(stage_status.status ? &stage_status : NULL,
5066 stage_line_type, FALSE);
5067 }
5068 }
5071 static void
5072 stage_next(struct view *view, struct line *line)
5073 {
5074 int i;
5076 if (!stage_chunks) {
5077 static size_t alloc = 0;
5078 int *tmp;
5080 for (line = view->line; line < view->line + view->lines; line++) {
5081 if (line->type != LINE_DIFF_CHUNK)
5082 continue;
5084 tmp = realloc_items(stage_chunk, &alloc,
5085 stage_chunks, sizeof(*tmp));
5086 if (!tmp) {
5087 report("Allocation failure");
5088 return;
5089 }
5091 stage_chunk = tmp;
5092 stage_chunk[stage_chunks++] = line - view->line;
5093 }
5094 }
5096 for (i = 0; i < stage_chunks; i++) {
5097 if (stage_chunk[i] > view->lineno) {
5098 do_scroll_view(view, stage_chunk[i] - view->lineno);
5099 report("Chunk %d of %d", i + 1, stage_chunks);
5100 return;
5101 }
5102 }
5104 report("No next chunk found");
5105 }
5107 static enum request
5108 stage_request(struct view *view, enum request request, struct line *line)
5109 {
5110 switch (request) {
5111 case REQ_STATUS_UPDATE:
5112 if (!stage_update(view, line))
5113 return REQ_NONE;
5114 break;
5116 case REQ_STATUS_REVERT:
5117 if (!stage_revert(view, line))
5118 return REQ_NONE;
5119 break;
5121 case REQ_STAGE_NEXT:
5122 if (stage_line_type == LINE_STAT_UNTRACKED) {
5123 report("File is untracked; press %s to add",
5124 get_key(REQ_STATUS_UPDATE));
5125 return REQ_NONE;
5126 }
5127 stage_next(view, line);
5128 return REQ_NONE;
5130 case REQ_EDIT:
5131 if (!stage_status.new.name[0])
5132 return request;
5133 if (stage_status.status == 'D') {
5134 report("File has been deleted.");
5135 return REQ_NONE;
5136 }
5138 open_editor(stage_status.status != '?', stage_status.new.name);
5139 break;
5141 case REQ_REFRESH:
5142 /* Reload everything ... */
5143 break;
5145 case REQ_VIEW_BLAME:
5146 if (stage_status.new.name[0]) {
5147 string_copy(opt_file, stage_status.new.name);
5148 opt_ref[0] = 0;
5149 }
5150 return request;
5152 case REQ_ENTER:
5153 return pager_request(view, request, line);
5155 default:
5156 return request;
5157 }
5159 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5160 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
5162 /* Check whether the staged entry still exists, and close the
5163 * stage view if it doesn't. */
5164 if (!status_exists(&stage_status, stage_line_type)) {
5165 status_restore(VIEW(REQ_VIEW_STATUS));
5166 return REQ_VIEW_CLOSE;
5167 }
5169 if (stage_line_type == LINE_STAT_UNTRACKED) {
5170 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5171 report("Cannot display a directory");
5172 return REQ_NONE;
5173 }
5175 if (!prepare_update_file(view, stage_status.new.name)) {
5176 report("Failed to open file: %s", strerror(errno));
5177 return REQ_NONE;
5178 }
5179 }
5180 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5182 return REQ_NONE;
5183 }
5185 static struct view_ops stage_ops = {
5186 "line",
5187 NULL,
5188 NULL,
5189 pager_read,
5190 pager_draw,
5191 stage_request,
5192 pager_grep,
5193 pager_select,
5194 };
5197 /*
5198 * Revision graph
5199 */
5201 struct commit {
5202 char id[SIZEOF_REV]; /* SHA1 ID. */
5203 char title[128]; /* First line of the commit message. */
5204 char author[75]; /* Author of the commit. */
5205 struct tm time; /* Date from the author ident. */
5206 struct ref **refs; /* Repository references. */
5207 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5208 size_t graph_size; /* The width of the graph array. */
5209 bool has_parents; /* Rewritten --parents seen. */
5210 };
5212 /* Size of rev graph with no "padding" columns */
5213 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5215 struct rev_graph {
5216 struct rev_graph *prev, *next, *parents;
5217 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5218 size_t size;
5219 struct commit *commit;
5220 size_t pos;
5221 unsigned int boundary:1;
5222 };
5224 /* Parents of the commit being visualized. */
5225 static struct rev_graph graph_parents[4];
5227 /* The current stack of revisions on the graph. */
5228 static struct rev_graph graph_stacks[4] = {
5229 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5230 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5231 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5232 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5233 };
5235 static inline bool
5236 graph_parent_is_merge(struct rev_graph *graph)
5237 {
5238 return graph->parents->size > 1;
5239 }
5241 static inline void
5242 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5243 {
5244 struct commit *commit = graph->commit;
5246 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5247 commit->graph[commit->graph_size++] = symbol;
5248 }
5250 static void
5251 clear_rev_graph(struct rev_graph *graph)
5252 {
5253 graph->boundary = 0;
5254 graph->size = graph->pos = 0;
5255 graph->commit = NULL;
5256 memset(graph->parents, 0, sizeof(*graph->parents));
5257 }
5259 static void
5260 done_rev_graph(struct rev_graph *graph)
5261 {
5262 if (graph_parent_is_merge(graph) &&
5263 graph->pos < graph->size - 1 &&
5264 graph->next->size == graph->size + graph->parents->size - 1) {
5265 size_t i = graph->pos + graph->parents->size - 1;
5267 graph->commit->graph_size = i * 2;
5268 while (i < graph->next->size - 1) {
5269 append_to_rev_graph(graph, ' ');
5270 append_to_rev_graph(graph, '\\');
5271 i++;
5272 }
5273 }
5275 clear_rev_graph(graph);
5276 }
5278 static void
5279 push_rev_graph(struct rev_graph *graph, const char *parent)
5280 {
5281 int i;
5283 /* "Collapse" duplicate parents lines.
5284 *
5285 * FIXME: This needs to also update update the drawn graph but
5286 * for now it just serves as a method for pruning graph lines. */
5287 for (i = 0; i < graph->size; i++)
5288 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5289 return;
5291 if (graph->size < SIZEOF_REVITEMS) {
5292 string_copy_rev(graph->rev[graph->size++], parent);
5293 }
5294 }
5296 static chtype
5297 get_rev_graph_symbol(struct rev_graph *graph)
5298 {
5299 chtype symbol;
5301 if (graph->boundary)
5302 symbol = REVGRAPH_BOUND;
5303 else if (graph->parents->size == 0)
5304 symbol = REVGRAPH_INIT;
5305 else if (graph_parent_is_merge(graph))
5306 symbol = REVGRAPH_MERGE;
5307 else if (graph->pos >= graph->size)
5308 symbol = REVGRAPH_BRANCH;
5309 else
5310 symbol = REVGRAPH_COMMIT;
5312 return symbol;
5313 }
5315 static void
5316 draw_rev_graph(struct rev_graph *graph)
5317 {
5318 struct rev_filler {
5319 chtype separator, line;
5320 };
5321 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5322 static struct rev_filler fillers[] = {
5323 { ' ', '|' },
5324 { '`', '.' },
5325 { '\'', ' ' },
5326 { '/', ' ' },
5327 };
5328 chtype symbol = get_rev_graph_symbol(graph);
5329 struct rev_filler *filler;
5330 size_t i;
5332 if (opt_line_graphics)
5333 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5335 filler = &fillers[DEFAULT];
5337 for (i = 0; i < graph->pos; i++) {
5338 append_to_rev_graph(graph, filler->line);
5339 if (graph_parent_is_merge(graph->prev) &&
5340 graph->prev->pos == i)
5341 filler = &fillers[RSHARP];
5343 append_to_rev_graph(graph, filler->separator);
5344 }
5346 /* Place the symbol for this revision. */
5347 append_to_rev_graph(graph, symbol);
5349 if (graph->prev->size > graph->size)
5350 filler = &fillers[RDIAG];
5351 else
5352 filler = &fillers[DEFAULT];
5354 i++;
5356 for (; i < graph->size; i++) {
5357 append_to_rev_graph(graph, filler->separator);
5358 append_to_rev_graph(graph, filler->line);
5359 if (graph_parent_is_merge(graph->prev) &&
5360 i < graph->prev->pos + graph->parents->size)
5361 filler = &fillers[RSHARP];
5362 if (graph->prev->size > graph->size)
5363 filler = &fillers[LDIAG];
5364 }
5366 if (graph->prev->size > graph->size) {
5367 append_to_rev_graph(graph, filler->separator);
5368 if (filler->line != ' ')
5369 append_to_rev_graph(graph, filler->line);
5370 }
5371 }
5373 /* Prepare the next rev graph */
5374 static void
5375 prepare_rev_graph(struct rev_graph *graph)
5376 {
5377 size_t i;
5379 /* First, traverse all lines of revisions up to the active one. */
5380 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5381 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5382 break;
5384 push_rev_graph(graph->next, graph->rev[graph->pos]);
5385 }
5387 /* Interleave the new revision parent(s). */
5388 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5389 push_rev_graph(graph->next, graph->parents->rev[i]);
5391 /* Lastly, put any remaining revisions. */
5392 for (i = graph->pos + 1; i < graph->size; i++)
5393 push_rev_graph(graph->next, graph->rev[i]);
5394 }
5396 static void
5397 update_rev_graph(struct view *view, struct rev_graph *graph)
5398 {
5399 /* If this is the finalizing update ... */
5400 if (graph->commit)
5401 prepare_rev_graph(graph);
5403 /* Graph visualization needs a one rev look-ahead,
5404 * so the first update doesn't visualize anything. */
5405 if (!graph->prev->commit)
5406 return;
5408 if (view->lines > 2)
5409 view->line[view->lines - 3].dirty = 1;
5410 if (view->lines > 1)
5411 view->line[view->lines - 2].dirty = 1;
5412 draw_rev_graph(graph->prev);
5413 done_rev_graph(graph->prev->prev);
5414 }
5417 /*
5418 * Main view backend
5419 */
5421 static const char *main_argv[SIZEOF_ARG] = {
5422 "git", "log", "--no-color", "--pretty=raw", "--parents",
5423 "--topo-order", "%(head)", NULL
5424 };
5426 static bool
5427 main_draw(struct view *view, struct line *line, unsigned int lineno)
5428 {
5429 struct commit *commit = line->data;
5431 if (!*commit->author)
5432 return FALSE;
5434 if (opt_date && draw_date(view, &commit->time))
5435 return TRUE;
5437 if (opt_author &&
5438 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5439 return TRUE;
5441 if (opt_rev_graph && commit->graph_size &&
5442 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5443 return TRUE;
5445 if (opt_show_refs && commit->refs) {
5446 size_t i = 0;
5448 do {
5449 enum line_type type;
5451 if (commit->refs[i]->head)
5452 type = LINE_MAIN_HEAD;
5453 else if (commit->refs[i]->ltag)
5454 type = LINE_MAIN_LOCAL_TAG;
5455 else if (commit->refs[i]->tag)
5456 type = LINE_MAIN_TAG;
5457 else if (commit->refs[i]->tracked)
5458 type = LINE_MAIN_TRACKED;
5459 else if (commit->refs[i]->remote)
5460 type = LINE_MAIN_REMOTE;
5461 else
5462 type = LINE_MAIN_REF;
5464 if (draw_text(view, type, "[", TRUE) ||
5465 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5466 draw_text(view, type, "]", TRUE))
5467 return TRUE;
5469 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5470 return TRUE;
5471 } while (commit->refs[i++]->next);
5472 }
5474 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5475 return TRUE;
5476 }
5478 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5479 static bool
5480 main_read(struct view *view, char *line)
5481 {
5482 static struct rev_graph *graph = graph_stacks;
5483 enum line_type type;
5484 struct commit *commit;
5486 if (!line) {
5487 int i;
5489 if (!view->lines && !view->parent)
5490 die("No revisions match the given arguments.");
5491 if (view->lines > 0) {
5492 commit = view->line[view->lines - 1].data;
5493 view->line[view->lines - 1].dirty = 1;
5494 if (!*commit->author) {
5495 view->lines--;
5496 free(commit);
5497 graph->commit = NULL;
5498 }
5499 }
5500 update_rev_graph(view, graph);
5502 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5503 clear_rev_graph(&graph_stacks[i]);
5504 return TRUE;
5505 }
5507 type = get_line_type(line);
5508 if (type == LINE_COMMIT) {
5509 commit = calloc(1, sizeof(struct commit));
5510 if (!commit)
5511 return FALSE;
5513 line += STRING_SIZE("commit ");
5514 if (*line == '-') {
5515 graph->boundary = 1;
5516 line++;
5517 }
5519 string_copy_rev(commit->id, line);
5520 commit->refs = get_refs(commit->id);
5521 graph->commit = commit;
5522 add_line_data(view, commit, LINE_MAIN_COMMIT);
5524 while ((line = strchr(line, ' '))) {
5525 line++;
5526 push_rev_graph(graph->parents, line);
5527 commit->has_parents = TRUE;
5528 }
5529 return TRUE;
5530 }
5532 if (!view->lines)
5533 return TRUE;
5534 commit = view->line[view->lines - 1].data;
5536 switch (type) {
5537 case LINE_PARENT:
5538 if (commit->has_parents)
5539 break;
5540 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5541 break;
5543 case LINE_AUTHOR:
5544 {
5545 /* Parse author lines where the name may be empty:
5546 * author <email@address.tld> 1138474660 +0100
5547 */
5548 char *ident = line + STRING_SIZE("author ");
5549 char *nameend = strchr(ident, '<');
5550 char *emailend = strchr(ident, '>');
5552 if (!nameend || !emailend)
5553 break;
5555 update_rev_graph(view, graph);
5556 graph = graph->next;
5558 *nameend = *emailend = 0;
5559 ident = chomp_string(ident);
5560 if (!*ident) {
5561 ident = chomp_string(nameend + 1);
5562 if (!*ident)
5563 ident = "Unknown";
5564 }
5566 string_ncopy(commit->author, ident, strlen(ident));
5567 view->line[view->lines - 1].dirty = 1;
5569 /* Parse epoch and timezone */
5570 if (emailend[1] == ' ') {
5571 char *secs = emailend + 2;
5572 char *zone = strchr(secs, ' ');
5573 time_t time = (time_t) atol(secs);
5575 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5576 long tz;
5578 zone++;
5579 tz = ('0' - zone[1]) * 60 * 60 * 10;
5580 tz += ('0' - zone[2]) * 60 * 60;
5581 tz += ('0' - zone[3]) * 60;
5582 tz += ('0' - zone[4]) * 60;
5584 if (zone[0] == '-')
5585 tz = -tz;
5587 time -= tz;
5588 }
5590 gmtime_r(&time, &commit->time);
5591 }
5592 break;
5593 }
5594 default:
5595 /* Fill in the commit title if it has not already been set. */
5596 if (commit->title[0])
5597 break;
5599 /* Require titles to start with a non-space character at the
5600 * offset used by git log. */
5601 if (strncmp(line, " ", 4))
5602 break;
5603 line += 4;
5604 /* Well, if the title starts with a whitespace character,
5605 * try to be forgiving. Otherwise we end up with no title. */
5606 while (isspace(*line))
5607 line++;
5608 if (*line == '\0')
5609 break;
5610 /* FIXME: More graceful handling of titles; append "..." to
5611 * shortened titles, etc. */
5613 string_ncopy(commit->title, line, strlen(line));
5614 view->line[view->lines - 1].dirty = 1;
5615 }
5617 return TRUE;
5618 }
5620 static enum request
5621 main_request(struct view *view, enum request request, struct line *line)
5622 {
5623 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5625 switch (request) {
5626 case REQ_ENTER:
5627 open_view(view, REQ_VIEW_DIFF, flags);
5628 break;
5629 case REQ_REFRESH:
5630 load_refs();
5631 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5632 break;
5633 default:
5634 return request;
5635 }
5637 return REQ_NONE;
5638 }
5640 static bool
5641 grep_refs(struct ref **refs, regex_t *regex)
5642 {
5643 regmatch_t pmatch;
5644 size_t i = 0;
5646 if (!refs)
5647 return FALSE;
5648 do {
5649 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5650 return TRUE;
5651 } while (refs[i++]->next);
5653 return FALSE;
5654 }
5656 static bool
5657 main_grep(struct view *view, struct line *line)
5658 {
5659 struct commit *commit = line->data;
5660 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5661 char buf[DATE_COLS + 1];
5662 regmatch_t pmatch;
5664 for (state = S_TITLE; state < S_END; state++) {
5665 char *text;
5667 switch (state) {
5668 case S_TITLE: text = commit->title; break;
5669 case S_AUTHOR:
5670 if (!opt_author)
5671 continue;
5672 text = commit->author;
5673 break;
5674 case S_DATE:
5675 if (!opt_date)
5676 continue;
5677 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5678 continue;
5679 text = buf;
5680 break;
5681 case S_REFS:
5682 if (!opt_show_refs)
5683 continue;
5684 if (grep_refs(commit->refs, view->regex) == TRUE)
5685 return TRUE;
5686 continue;
5687 default:
5688 return FALSE;
5689 }
5691 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5692 return TRUE;
5693 }
5695 return FALSE;
5696 }
5698 static void
5699 main_select(struct view *view, struct line *line)
5700 {
5701 struct commit *commit = line->data;
5703 string_copy_rev(view->ref, commit->id);
5704 string_copy_rev(ref_commit, view->ref);
5705 }
5707 static struct view_ops main_ops = {
5708 "commit",
5709 main_argv,
5710 NULL,
5711 main_read,
5712 main_draw,
5713 main_request,
5714 main_grep,
5715 main_select,
5716 };
5719 /*
5720 * Unicode / UTF-8 handling
5721 *
5722 * NOTE: Much of the following code for dealing with unicode is derived from
5723 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5724 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5725 */
5727 /* I've (over)annotated a lot of code snippets because I am not entirely
5728 * confident that the approach taken by this small UTF-8 interface is correct.
5729 * --jonas */
5731 static inline int
5732 unicode_width(unsigned long c)
5733 {
5734 if (c >= 0x1100 &&
5735 (c <= 0x115f /* Hangul Jamo */
5736 || c == 0x2329
5737 || c == 0x232a
5738 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5739 /* CJK ... Yi */
5740 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5741 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5742 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5743 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5744 || (c >= 0xffe0 && c <= 0xffe6)
5745 || (c >= 0x20000 && c <= 0x2fffd)
5746 || (c >= 0x30000 && c <= 0x3fffd)))
5747 return 2;
5749 if (c == '\t')
5750 return opt_tab_size;
5752 return 1;
5753 }
5755 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5756 * Illegal bytes are set one. */
5757 static const unsigned char utf8_bytes[256] = {
5758 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,
5759 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,
5760 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,
5761 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,
5762 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,
5763 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,
5764 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,
5765 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,
5766 };
5768 /* Decode UTF-8 multi-byte representation into a unicode character. */
5769 static inline unsigned long
5770 utf8_to_unicode(const char *string, size_t length)
5771 {
5772 unsigned long unicode;
5774 switch (length) {
5775 case 1:
5776 unicode = string[0];
5777 break;
5778 case 2:
5779 unicode = (string[0] & 0x1f) << 6;
5780 unicode += (string[1] & 0x3f);
5781 break;
5782 case 3:
5783 unicode = (string[0] & 0x0f) << 12;
5784 unicode += ((string[1] & 0x3f) << 6);
5785 unicode += (string[2] & 0x3f);
5786 break;
5787 case 4:
5788 unicode = (string[0] & 0x0f) << 18;
5789 unicode += ((string[1] & 0x3f) << 12);
5790 unicode += ((string[2] & 0x3f) << 6);
5791 unicode += (string[3] & 0x3f);
5792 break;
5793 case 5:
5794 unicode = (string[0] & 0x0f) << 24;
5795 unicode += ((string[1] & 0x3f) << 18);
5796 unicode += ((string[2] & 0x3f) << 12);
5797 unicode += ((string[3] & 0x3f) << 6);
5798 unicode += (string[4] & 0x3f);
5799 break;
5800 case 6:
5801 unicode = (string[0] & 0x01) << 30;
5802 unicode += ((string[1] & 0x3f) << 24);
5803 unicode += ((string[2] & 0x3f) << 18);
5804 unicode += ((string[3] & 0x3f) << 12);
5805 unicode += ((string[4] & 0x3f) << 6);
5806 unicode += (string[5] & 0x3f);
5807 break;
5808 default:
5809 die("Invalid unicode length");
5810 }
5812 /* Invalid characters could return the special 0xfffd value but NUL
5813 * should be just as good. */
5814 return unicode > 0xffff ? 0 : unicode;
5815 }
5817 /* Calculates how much of string can be shown within the given maximum width
5818 * and sets trimmed parameter to non-zero value if all of string could not be
5819 * shown. If the reserve flag is TRUE, it will reserve at least one
5820 * trailing character, which can be useful when drawing a delimiter.
5821 *
5822 * Returns the number of bytes to output from string to satisfy max_width. */
5823 static size_t
5824 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5825 {
5826 const char *start = string;
5827 const char *end = strchr(string, '\0');
5828 unsigned char last_bytes = 0;
5829 size_t last_ucwidth = 0;
5831 *width = 0;
5832 *trimmed = 0;
5834 while (string < end) {
5835 int c = *(unsigned char *) string;
5836 unsigned char bytes = utf8_bytes[c];
5837 size_t ucwidth;
5838 unsigned long unicode;
5840 if (string + bytes > end)
5841 break;
5843 /* Change representation to figure out whether
5844 * it is a single- or double-width character. */
5846 unicode = utf8_to_unicode(string, bytes);
5847 /* FIXME: Graceful handling of invalid unicode character. */
5848 if (!unicode)
5849 break;
5851 ucwidth = unicode_width(unicode);
5852 *width += ucwidth;
5853 if (*width > max_width) {
5854 *trimmed = 1;
5855 *width -= ucwidth;
5856 if (reserve && *width == max_width) {
5857 string -= last_bytes;
5858 *width -= last_ucwidth;
5859 }
5860 break;
5861 }
5863 string += bytes;
5864 last_bytes = bytes;
5865 last_ucwidth = ucwidth;
5866 }
5868 return string - start;
5869 }
5872 /*
5873 * Status management
5874 */
5876 /* Whether or not the curses interface has been initialized. */
5877 static bool cursed = FALSE;
5879 /* The status window is used for polling keystrokes. */
5880 static WINDOW *status_win;
5882 static bool status_empty = TRUE;
5884 /* Update status and title window. */
5885 static void
5886 report(const char *msg, ...)
5887 {
5888 struct view *view = display[current_view];
5890 if (input_mode)
5891 return;
5893 if (!view) {
5894 char buf[SIZEOF_STR];
5895 va_list args;
5897 va_start(args, msg);
5898 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5899 buf[sizeof(buf) - 1] = 0;
5900 buf[sizeof(buf) - 2] = '.';
5901 buf[sizeof(buf) - 3] = '.';
5902 buf[sizeof(buf) - 4] = '.';
5903 }
5904 va_end(args);
5905 die("%s", buf);
5906 }
5908 if (!status_empty || *msg) {
5909 va_list args;
5911 va_start(args, msg);
5913 wmove(status_win, 0, 0);
5914 if (*msg) {
5915 vwprintw(status_win, msg, args);
5916 status_empty = FALSE;
5917 } else {
5918 status_empty = TRUE;
5919 }
5920 wclrtoeol(status_win);
5921 wrefresh(status_win);
5923 va_end(args);
5924 }
5926 update_view_title(view);
5927 update_display_cursor(view);
5928 }
5930 /* Controls when nodelay should be in effect when polling user input. */
5931 static void
5932 set_nonblocking_input(bool loading)
5933 {
5934 static unsigned int loading_views;
5936 if ((loading == FALSE && loading_views-- == 1) ||
5937 (loading == TRUE && loading_views++ == 0))
5938 nodelay(status_win, loading);
5939 }
5941 static void
5942 init_display(void)
5943 {
5944 int x, y;
5946 /* Initialize the curses library */
5947 if (isatty(STDIN_FILENO)) {
5948 cursed = !!initscr();
5949 opt_tty = stdin;
5950 } else {
5951 /* Leave stdin and stdout alone when acting as a pager. */
5952 opt_tty = fopen("/dev/tty", "r+");
5953 if (!opt_tty)
5954 die("Failed to open /dev/tty");
5955 cursed = !!newterm(NULL, opt_tty, opt_tty);
5956 }
5958 if (!cursed)
5959 die("Failed to initialize curses");
5961 nonl(); /* Tell curses not to do NL->CR/NL on output */
5962 cbreak(); /* Take input chars one at a time, no wait for \n */
5963 noecho(); /* Don't echo input */
5964 leaveok(stdscr, TRUE);
5966 if (has_colors())
5967 init_colors();
5969 getmaxyx(stdscr, y, x);
5970 status_win = newwin(1, 0, y - 1, 0);
5971 if (!status_win)
5972 die("Failed to create status window");
5974 /* Enable keyboard mapping */
5975 keypad(status_win, TRUE);
5976 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5978 TABSIZE = opt_tab_size;
5979 if (opt_line_graphics) {
5980 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5981 }
5982 }
5984 static int
5985 get_input(bool prompting)
5986 {
5987 struct view *view;
5988 int i, key;
5990 if (prompting)
5991 input_mode = TRUE;
5993 while (true) {
5994 foreach_view (view, i)
5995 update_view(view);
5997 /* Refresh, accept single keystroke of input */
5998 key = wgetch(status_win);
6000 /* wgetch() with nodelay() enabled returns ERR when
6001 * there's no input. */
6002 if (key == ERR) {
6003 doupdate();
6005 } else if (key == KEY_RESIZE) {
6006 int height, width;
6008 getmaxyx(stdscr, height, width);
6010 /* Resize the status view and let the view driver take
6011 * care of resizing the displayed views. */
6012 resize_display();
6013 redraw_display(TRUE);
6014 wresize(status_win, 1, width);
6015 mvwin(status_win, height - 1, 0);
6016 wrefresh(status_win);
6018 } else {
6019 input_mode = FALSE;
6020 return key;
6021 }
6022 }
6023 }
6025 static bool
6026 prompt_yesno(const char *prompt)
6027 {
6028 enum { WAIT, STOP, CANCEL } status = WAIT;
6029 bool answer = FALSE;
6031 while (status == WAIT) {
6032 int key;
6034 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
6035 wclrtoeol(status_win);
6037 key = get_input(TRUE);
6038 switch (key) {
6039 case 'y':
6040 case 'Y':
6041 answer = TRUE;
6042 status = STOP;
6043 break;
6045 case KEY_ESC:
6046 case KEY_RETURN:
6047 case KEY_ENTER:
6048 case KEY_BACKSPACE:
6049 case 'n':
6050 case 'N':
6051 case '\n':
6052 default:
6053 answer = FALSE;
6054 status = CANCEL;
6055 }
6056 }
6058 /* Clear the status window */
6059 status_empty = FALSE;
6060 report("");
6062 return answer;
6063 }
6065 static char *
6066 read_prompt(const char *prompt)
6067 {
6068 enum { READING, STOP, CANCEL } status = READING;
6069 static char buf[SIZEOF_STR];
6070 int pos = 0;
6072 while (status == READING) {
6073 int key;
6075 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6076 wclrtoeol(status_win);
6078 key = get_input(TRUE);
6079 switch (key) {
6080 case KEY_RETURN:
6081 case KEY_ENTER:
6082 case '\n':
6083 status = pos ? STOP : CANCEL;
6084 break;
6086 case KEY_BACKSPACE:
6087 if (pos > 0)
6088 pos--;
6089 else
6090 status = CANCEL;
6091 break;
6093 case KEY_ESC:
6094 status = CANCEL;
6095 break;
6097 default:
6098 if (pos >= sizeof(buf)) {
6099 report("Input string too long");
6100 return NULL;
6101 }
6103 if (isprint(key))
6104 buf[pos++] = (char) key;
6105 }
6106 }
6108 /* Clear the status window */
6109 status_empty = FALSE;
6110 report("");
6112 if (status == CANCEL)
6113 return NULL;
6115 buf[pos++] = 0;
6117 return buf;
6118 }
6120 /*
6121 * Repository properties
6122 */
6124 static int
6125 git_properties(const char **argv, const char *separators,
6126 int (*read_property)(char *, size_t, char *, size_t))
6127 {
6128 struct io io = {};
6130 if (init_io_rd(&io, argv, NULL, FORMAT_NONE))
6131 return read_properties(&io, separators, read_property);
6132 return ERR;
6133 }
6135 static struct ref *refs = NULL;
6136 static size_t refs_alloc = 0;
6137 static size_t refs_size = 0;
6139 /* Id <-> ref store */
6140 static struct ref ***id_refs = NULL;
6141 static size_t id_refs_alloc = 0;
6142 static size_t id_refs_size = 0;
6144 static int
6145 compare_refs(const void *ref1_, const void *ref2_)
6146 {
6147 const struct ref *ref1 = *(const struct ref **)ref1_;
6148 const struct ref *ref2 = *(const struct ref **)ref2_;
6150 if (ref1->tag != ref2->tag)
6151 return ref2->tag - ref1->tag;
6152 if (ref1->ltag != ref2->ltag)
6153 return ref2->ltag - ref2->ltag;
6154 if (ref1->head != ref2->head)
6155 return ref2->head - ref1->head;
6156 if (ref1->tracked != ref2->tracked)
6157 return ref2->tracked - ref1->tracked;
6158 if (ref1->remote != ref2->remote)
6159 return ref2->remote - ref1->remote;
6160 return strcmp(ref1->name, ref2->name);
6161 }
6163 static struct ref **
6164 get_refs(const char *id)
6165 {
6166 struct ref ***tmp_id_refs;
6167 struct ref **ref_list = NULL;
6168 size_t ref_list_alloc = 0;
6169 size_t ref_list_size = 0;
6170 size_t i;
6172 for (i = 0; i < id_refs_size; i++)
6173 if (!strcmp(id, id_refs[i][0]->id))
6174 return id_refs[i];
6176 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6177 sizeof(*id_refs));
6178 if (!tmp_id_refs)
6179 return NULL;
6181 id_refs = tmp_id_refs;
6183 for (i = 0; i < refs_size; i++) {
6184 struct ref **tmp;
6186 if (strcmp(id, refs[i].id))
6187 continue;
6189 tmp = realloc_items(ref_list, &ref_list_alloc,
6190 ref_list_size + 1, sizeof(*ref_list));
6191 if (!tmp) {
6192 if (ref_list)
6193 free(ref_list);
6194 return NULL;
6195 }
6197 ref_list = tmp;
6198 ref_list[ref_list_size] = &refs[i];
6199 /* XXX: The properties of the commit chains ensures that we can
6200 * safely modify the shared ref. The repo references will
6201 * always be similar for the same id. */
6202 ref_list[ref_list_size]->next = 1;
6204 ref_list_size++;
6205 }
6207 if (ref_list) {
6208 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6209 ref_list[ref_list_size - 1]->next = 0;
6210 id_refs[id_refs_size++] = ref_list;
6211 }
6213 return ref_list;
6214 }
6216 static int
6217 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6218 {
6219 struct ref *ref;
6220 bool tag = FALSE;
6221 bool ltag = FALSE;
6222 bool remote = FALSE;
6223 bool tracked = FALSE;
6224 bool check_replace = FALSE;
6225 bool head = FALSE;
6227 if (!prefixcmp(name, "refs/tags/")) {
6228 if (!suffixcmp(name, namelen, "^{}")) {
6229 namelen -= 3;
6230 name[namelen] = 0;
6231 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6232 check_replace = TRUE;
6233 } else {
6234 ltag = TRUE;
6235 }
6237 tag = TRUE;
6238 namelen -= STRING_SIZE("refs/tags/");
6239 name += STRING_SIZE("refs/tags/");
6241 } else if (!prefixcmp(name, "refs/remotes/")) {
6242 remote = TRUE;
6243 namelen -= STRING_SIZE("refs/remotes/");
6244 name += STRING_SIZE("refs/remotes/");
6245 tracked = !strcmp(opt_remote, name);
6247 } else if (!prefixcmp(name, "refs/heads/")) {
6248 namelen -= STRING_SIZE("refs/heads/");
6249 name += STRING_SIZE("refs/heads/");
6250 head = !strncmp(opt_head, name, namelen);
6252 } else if (!strcmp(name, "HEAD")) {
6253 string_ncopy(opt_head_rev, id, idlen);
6254 return OK;
6255 }
6257 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6258 /* it's an annotated tag, replace the previous sha1 with the
6259 * resolved commit id; relies on the fact git-ls-remote lists
6260 * the commit id of an annotated tag right before the commit id
6261 * it points to. */
6262 refs[refs_size - 1].ltag = ltag;
6263 string_copy_rev(refs[refs_size - 1].id, id);
6265 return OK;
6266 }
6267 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6268 if (!refs)
6269 return ERR;
6271 ref = &refs[refs_size++];
6272 ref->name = malloc(namelen + 1);
6273 if (!ref->name)
6274 return ERR;
6276 strncpy(ref->name, name, namelen);
6277 ref->name[namelen] = 0;
6278 ref->head = head;
6279 ref->tag = tag;
6280 ref->ltag = ltag;
6281 ref->remote = remote;
6282 ref->tracked = tracked;
6283 string_copy_rev(ref->id, id);
6285 return OK;
6286 }
6288 static int
6289 load_refs(void)
6290 {
6291 static const char *ls_remote_argv[SIZEOF_ARG] = {
6292 "git", "ls-remote", ".", NULL
6293 };
6294 static bool init = FALSE;
6296 if (!init) {
6297 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6298 init = TRUE;
6299 }
6301 if (!*opt_git_dir)
6302 return OK;
6304 while (refs_size > 0)
6305 free(refs[--refs_size].name);
6306 while (id_refs_size > 0)
6307 free(id_refs[--id_refs_size]);
6309 return git_properties(ls_remote_argv, "\t", read_ref);
6310 }
6312 static int
6313 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6314 {
6315 if (!strcmp(name, "i18n.commitencoding"))
6316 string_ncopy(opt_encoding, value, valuelen);
6318 if (!strcmp(name, "core.editor"))
6319 string_ncopy(opt_editor, value, valuelen);
6321 /* branch.<head>.remote */
6322 if (*opt_head &&
6323 !strncmp(name, "branch.", 7) &&
6324 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6325 !strcmp(name + 7 + strlen(opt_head), ".remote"))
6326 string_ncopy(opt_remote, value, valuelen);
6328 if (*opt_head && *opt_remote &&
6329 !strncmp(name, "branch.", 7) &&
6330 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6331 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
6332 size_t from = strlen(opt_remote);
6334 if (!prefixcmp(value, "refs/heads/")) {
6335 value += STRING_SIZE("refs/heads/");
6336 valuelen -= STRING_SIZE("refs/heads/");
6337 }
6339 if (!string_format_from(opt_remote, &from, "/%s", value))
6340 opt_remote[0] = 0;
6341 }
6343 return OK;
6344 }
6346 static int
6347 load_git_config(void)
6348 {
6349 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6351 return git_properties(config_list_argv, "=", read_repo_config_option);
6352 }
6354 static int
6355 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6356 {
6357 if (!opt_git_dir[0]) {
6358 string_ncopy(opt_git_dir, name, namelen);
6360 } else if (opt_is_inside_work_tree == -1) {
6361 /* This can be 3 different values depending on the
6362 * version of git being used. If git-rev-parse does not
6363 * understand --is-inside-work-tree it will simply echo
6364 * the option else either "true" or "false" is printed.
6365 * Default to true for the unknown case. */
6366 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6367 } else {
6368 string_ncopy(opt_cdup, name, namelen);
6369 }
6371 return OK;
6372 }
6374 static int
6375 load_repo_info(void)
6376 {
6377 const char *head_argv[] = {
6378 "git", "symbolic-ref", "HEAD", NULL
6379 };
6380 const char *rev_parse_argv[] = {
6381 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6382 "--show-cdup", NULL
6383 };
6385 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6386 chomp_string(opt_head);
6387 if (!prefixcmp(opt_head, "refs/heads/")) {
6388 char *offset = opt_head + STRING_SIZE("refs/heads/");
6390 memmove(opt_head, offset, strlen(offset) + 1);
6391 }
6392 }
6394 return git_properties(rev_parse_argv, "=", read_repo_info);
6395 }
6397 static int
6398 read_properties(struct io *io, const char *separators,
6399 int (*read_property)(char *, size_t, char *, size_t))
6400 {
6401 char *name;
6402 int state = OK;
6404 if (!start_io(io))
6405 return ERR;
6407 while (state == OK && (name = io_get(io, '\n', TRUE))) {
6408 char *value;
6409 size_t namelen;
6410 size_t valuelen;
6412 name = chomp_string(name);
6413 namelen = strcspn(name, separators);
6415 if (name[namelen]) {
6416 name[namelen] = 0;
6417 value = chomp_string(name + namelen + 1);
6418 valuelen = strlen(value);
6420 } else {
6421 value = "";
6422 valuelen = 0;
6423 }
6425 state = read_property(name, namelen, value, valuelen);
6426 }
6428 if (state != ERR && io_error(io))
6429 state = ERR;
6430 done_io(io);
6432 return state;
6433 }
6436 /*
6437 * Main
6438 */
6440 static void __NORETURN
6441 quit(int sig)
6442 {
6443 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6444 if (cursed)
6445 endwin();
6446 exit(0);
6447 }
6449 static void __NORETURN
6450 die(const char *err, ...)
6451 {
6452 va_list args;
6454 endwin();
6456 va_start(args, err);
6457 fputs("tig: ", stderr);
6458 vfprintf(stderr, err, args);
6459 fputs("\n", stderr);
6460 va_end(args);
6462 exit(1);
6463 }
6465 static void
6466 warn(const char *msg, ...)
6467 {
6468 va_list args;
6470 va_start(args, msg);
6471 fputs("tig warning: ", stderr);
6472 vfprintf(stderr, msg, args);
6473 fputs("\n", stderr);
6474 va_end(args);
6475 }
6477 int
6478 main(int argc, const char *argv[])
6479 {
6480 const char **run_argv = NULL;
6481 struct view *view;
6482 enum request request;
6483 size_t i;
6485 signal(SIGINT, quit);
6487 if (setlocale(LC_ALL, "")) {
6488 char *codeset = nl_langinfo(CODESET);
6490 string_ncopy(opt_codeset, codeset, strlen(codeset));
6491 }
6493 if (load_repo_info() == ERR)
6494 die("Failed to load repo info.");
6496 if (load_options() == ERR)
6497 die("Failed to load user config.");
6499 if (load_git_config() == ERR)
6500 die("Failed to load repo config.");
6502 request = parse_options(argc, argv, &run_argv);
6503 if (request == REQ_NONE)
6504 return 0;
6506 /* Require a git repository unless when running in pager mode. */
6507 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6508 die("Not a git repository");
6510 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6511 opt_utf8 = FALSE;
6513 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6514 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6515 if (opt_iconv == ICONV_NONE)
6516 die("Failed to initialize character set conversion");
6517 }
6519 if (load_refs() == ERR)
6520 die("Failed to load refs.");
6522 foreach_view (view, i)
6523 argv_from_env(view->ops->argv, view->cmd_env);
6525 init_display();
6527 if (request == REQ_VIEW_PAGER || run_argv) {
6528 if (request == REQ_VIEW_PAGER)
6529 io_open(&VIEW(request)->io, "");
6530 else if (!prepare_update(VIEW(request), run_argv, NULL, FORMAT_NONE))
6531 die("Failed to format arguments");
6532 open_view(NULL, request, OPEN_PREPARED);
6533 request = REQ_NONE;
6534 }
6536 while (view_driver(display[current_view], request)) {
6537 int key = get_input(FALSE);
6539 view = display[current_view];
6540 request = get_keybinding(view->keymap, key);
6542 /* Some low-level request handling. This keeps access to
6543 * status_win restricted. */
6544 switch (request) {
6545 case REQ_PROMPT:
6546 {
6547 char *cmd = read_prompt(":");
6549 if (cmd) {
6550 struct view *next = VIEW(REQ_VIEW_PAGER);
6551 const char *argv[SIZEOF_ARG] = { "git" };
6552 int argc = 1;
6554 /* When running random commands, initially show the
6555 * command in the title. However, it maybe later be
6556 * overwritten if a commit line is selected. */
6557 string_ncopy(next->ref, cmd, strlen(cmd));
6559 if (!argv_from_string(argv, &argc, cmd)) {
6560 report("Too many arguments");
6561 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
6562 report("Failed to format command");
6563 } else {
6564 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6565 }
6566 }
6568 request = REQ_NONE;
6569 break;
6570 }
6571 case REQ_SEARCH:
6572 case REQ_SEARCH_BACK:
6573 {
6574 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6575 char *search = read_prompt(prompt);
6577 if (search)
6578 string_ncopy(opt_search, search, strlen(search));
6579 else
6580 request = REQ_NONE;
6581 break;
6582 }
6583 default:
6584 break;
6585 }
6586 }
6588 quit(0);
6590 return 0;
6591 }