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 bool has_previous; /* Was a "previous" line detected. */
3899 };
3901 struct blame {
3902 struct blame_commit *commit;
3903 char text[1];
3904 };
3906 static bool
3907 blame_open(struct view *view)
3908 {
3909 if (*opt_ref || !io_open(&view->io, opt_file)) {
3910 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
3911 return FALSE;
3912 }
3914 setup_update(view, opt_file);
3915 string_format(view->ref, "%s ...", opt_file);
3917 return TRUE;
3918 }
3920 static struct blame_commit *
3921 get_blame_commit(struct view *view, const char *id)
3922 {
3923 size_t i;
3925 for (i = 0; i < view->lines; i++) {
3926 struct blame *blame = view->line[i].data;
3928 if (!blame->commit)
3929 continue;
3931 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3932 return blame->commit;
3933 }
3935 {
3936 struct blame_commit *commit = calloc(1, sizeof(*commit));
3938 if (commit)
3939 string_ncopy(commit->id, id, SIZEOF_REV);
3940 return commit;
3941 }
3942 }
3944 static bool
3945 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3946 {
3947 const char *pos = *posref;
3949 *posref = NULL;
3950 pos = strchr(pos + 1, ' ');
3951 if (!pos || !isdigit(pos[1]))
3952 return FALSE;
3953 *number = atoi(pos + 1);
3954 if (*number < min || *number > max)
3955 return FALSE;
3957 *posref = pos;
3958 return TRUE;
3959 }
3961 static struct blame_commit *
3962 parse_blame_commit(struct view *view, const char *text, int *blamed)
3963 {
3964 struct blame_commit *commit;
3965 struct blame *blame;
3966 const char *pos = text + SIZEOF_REV - 1;
3967 size_t lineno;
3968 size_t group;
3970 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3971 return NULL;
3973 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3974 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3975 return NULL;
3977 commit = get_blame_commit(view, text);
3978 if (!commit)
3979 return NULL;
3981 *blamed += group;
3982 while (group--) {
3983 struct line *line = &view->line[lineno + group - 1];
3985 blame = line->data;
3986 blame->commit = commit;
3987 line->dirty = 1;
3988 }
3990 return commit;
3991 }
3993 static bool
3994 blame_read_file(struct view *view, const char *line, bool *read_file)
3995 {
3996 if (!line) {
3997 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
3998 struct io io = {};
4000 if (view->lines == 0 && !view->parent)
4001 die("No blame exist for %s", view->vid);
4003 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
4004 report("Failed to load blame data");
4005 return TRUE;
4006 }
4008 done_io(view->pipe);
4009 view->io = io;
4010 *read_file = FALSE;
4011 return FALSE;
4013 } else {
4014 size_t linelen = strlen(line);
4015 struct blame *blame = malloc(sizeof(*blame) + linelen);
4017 blame->commit = NULL;
4018 strncpy(blame->text, line, linelen);
4019 blame->text[linelen] = 0;
4020 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4021 }
4022 }
4024 static bool
4025 match_blame_header(const char *name, char **line)
4026 {
4027 size_t namelen = strlen(name);
4028 bool matched = !strncmp(name, *line, namelen);
4030 if (matched)
4031 *line += namelen;
4033 return matched;
4034 }
4036 static bool
4037 blame_read(struct view *view, char *line)
4038 {
4039 static struct blame_commit *commit = NULL;
4040 static int blamed = 0;
4041 static time_t author_time;
4042 static bool read_file = TRUE;
4044 if (read_file)
4045 return blame_read_file(view, line, &read_file);
4047 if (!line) {
4048 /* Reset all! */
4049 commit = NULL;
4050 blamed = 0;
4051 read_file = TRUE;
4052 string_format(view->ref, "%s", view->vid);
4053 if (view_is_displayed(view)) {
4054 update_view_title(view);
4055 redraw_view_from(view, 0);
4056 }
4057 return TRUE;
4058 }
4060 if (!commit) {
4061 commit = parse_blame_commit(view, line, &blamed);
4062 string_format(view->ref, "%s %2d%%", view->vid,
4063 blamed * 100 / view->lines);
4065 } else if (match_blame_header("author ", &line)) {
4066 string_ncopy(commit->author, line, strlen(line));
4068 } else if (match_blame_header("author-time ", &line)) {
4069 author_time = (time_t) atol(line);
4071 } else if (match_blame_header("author-tz ", &line)) {
4072 long tz;
4074 tz = ('0' - line[1]) * 60 * 60 * 10;
4075 tz += ('0' - line[2]) * 60 * 60;
4076 tz += ('0' - line[3]) * 60;
4077 tz += ('0' - line[4]) * 60;
4079 if (line[0] == '-')
4080 tz = -tz;
4082 author_time -= tz;
4083 gmtime_r(&author_time, &commit->time);
4085 } else if (match_blame_header("summary ", &line)) {
4086 string_ncopy(commit->title, line, strlen(line));
4088 } else if (match_blame_header("previous ", &line)) {
4089 commit->has_previous = TRUE;
4091 } else if (match_blame_header("filename ", &line)) {
4092 string_ncopy(commit->filename, line, strlen(line));
4093 commit = NULL;
4094 }
4096 return TRUE;
4097 }
4099 static bool
4100 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4101 {
4102 struct blame *blame = line->data;
4103 struct tm *time = NULL;
4104 const char *id = NULL, *author = NULL;
4106 if (blame->commit && *blame->commit->filename) {
4107 id = blame->commit->id;
4108 author = blame->commit->author;
4109 time = &blame->commit->time;
4110 }
4112 if (opt_date && draw_date(view, time))
4113 return TRUE;
4115 if (opt_author &&
4116 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
4117 return TRUE;
4119 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4120 return TRUE;
4122 if (draw_lineno(view, lineno))
4123 return TRUE;
4125 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
4126 return TRUE;
4127 }
4129 static bool
4130 check_blame_commit(struct blame *blame)
4131 {
4132 if (!blame->commit)
4133 report("Commit data not loaded yet");
4134 else if (!strcmp(blame->commit->id, NULL_ID))
4135 report("No commit exist for the selected line");
4136 else
4137 return TRUE;
4138 return FALSE;
4139 }
4141 static enum request
4142 blame_request(struct view *view, enum request request, struct line *line)
4143 {
4144 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4145 struct blame *blame = line->data;
4147 switch (request) {
4148 case REQ_VIEW_BLAME:
4149 if (check_blame_commit(blame)) {
4150 string_copy(opt_ref, blame->commit->id);
4151 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4152 }
4153 break;
4155 case REQ_ENTER:
4156 if (!blame->commit) {
4157 report("No commit loaded yet");
4158 break;
4159 }
4161 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4162 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4163 break;
4165 if (!strcmp(blame->commit->id, NULL_ID)) {
4166 struct view *diff = VIEW(REQ_VIEW_DIFF);
4167 const char *diff_index_argv[] = {
4168 "git", "diff-index", "--patch-with-stat", "-C",
4169 "-M", "HEAD", "--", view->vid, NULL
4170 };
4172 if (!blame->commit->has_previous) {
4173 diff_index_argv[1] = "diff";
4174 diff_index_argv[5] = "--";
4175 diff_index_argv[6] = "/dev/null";
4176 }
4178 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4179 report("Failed to allocate diff command");
4180 break;
4181 }
4182 flags |= OPEN_PREPARED;
4183 }
4185 open_view(view, REQ_VIEW_DIFF, flags);
4186 break;
4188 default:
4189 return request;
4190 }
4192 return REQ_NONE;
4193 }
4195 static bool
4196 blame_grep(struct view *view, struct line *line)
4197 {
4198 struct blame *blame = line->data;
4199 struct blame_commit *commit = blame->commit;
4200 regmatch_t pmatch;
4202 #define MATCH(text, on) \
4203 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4205 if (commit) {
4206 char buf[DATE_COLS + 1];
4208 if (MATCH(commit->title, 1) ||
4209 MATCH(commit->author, opt_author) ||
4210 MATCH(commit->id, opt_date))
4211 return TRUE;
4213 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
4214 MATCH(buf, 1))
4215 return TRUE;
4216 }
4218 return MATCH(blame->text, 1);
4220 #undef MATCH
4221 }
4223 static void
4224 blame_select(struct view *view, struct line *line)
4225 {
4226 struct blame *blame = line->data;
4227 struct blame_commit *commit = blame->commit;
4229 if (!commit)
4230 return;
4232 if (!strcmp(commit->id, NULL_ID))
4233 string_ncopy(ref_commit, "HEAD", 4);
4234 else
4235 string_copy_rev(ref_commit, commit->id);
4236 }
4238 static struct view_ops blame_ops = {
4239 "line",
4240 NULL,
4241 blame_open,
4242 blame_read,
4243 blame_draw,
4244 blame_request,
4245 blame_grep,
4246 blame_select,
4247 };
4249 /*
4250 * Status backend
4251 */
4253 struct status {
4254 char status;
4255 struct {
4256 mode_t mode;
4257 char rev[SIZEOF_REV];
4258 char name[SIZEOF_STR];
4259 } old;
4260 struct {
4261 mode_t mode;
4262 char rev[SIZEOF_REV];
4263 char name[SIZEOF_STR];
4264 } new;
4265 };
4267 static char status_onbranch[SIZEOF_STR];
4268 static struct status stage_status;
4269 static enum line_type stage_line_type;
4270 static size_t stage_chunks;
4271 static int *stage_chunk;
4273 /* This should work even for the "On branch" line. */
4274 static inline bool
4275 status_has_none(struct view *view, struct line *line)
4276 {
4277 return line < view->line + view->lines && !line[1].data;
4278 }
4280 /* Get fields from the diff line:
4281 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4282 */
4283 static inline bool
4284 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4285 {
4286 const char *old_mode = buf + 1;
4287 const char *new_mode = buf + 8;
4288 const char *old_rev = buf + 15;
4289 const char *new_rev = buf + 56;
4290 const char *status = buf + 97;
4292 if (bufsize < 98 ||
4293 old_mode[-1] != ':' ||
4294 new_mode[-1] != ' ' ||
4295 old_rev[-1] != ' ' ||
4296 new_rev[-1] != ' ' ||
4297 status[-1] != ' ')
4298 return FALSE;
4300 file->status = *status;
4302 string_copy_rev(file->old.rev, old_rev);
4303 string_copy_rev(file->new.rev, new_rev);
4305 file->old.mode = strtoul(old_mode, NULL, 8);
4306 file->new.mode = strtoul(new_mode, NULL, 8);
4308 file->old.name[0] = file->new.name[0] = 0;
4310 return TRUE;
4311 }
4313 static bool
4314 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4315 {
4316 struct status *file = NULL;
4317 struct status *unmerged = NULL;
4318 char *buf;
4319 struct io io = {};
4321 if (!run_io(&io, argv, NULL, IO_RD))
4322 return FALSE;
4324 add_line_data(view, NULL, type);
4326 while ((buf = io_get(&io, 0, TRUE))) {
4327 if (!file) {
4328 file = calloc(1, sizeof(*file));
4329 if (!file || !add_line_data(view, file, type))
4330 goto error_out;
4331 }
4333 /* Parse diff info part. */
4334 if (status) {
4335 file->status = status;
4336 if (status == 'A')
4337 string_copy(file->old.rev, NULL_ID);
4339 } else if (!file->status) {
4340 if (!status_get_diff(file, buf, strlen(buf)))
4341 goto error_out;
4343 buf = io_get(&io, 0, TRUE);
4344 if (!buf)
4345 break;
4347 /* Collapse all 'M'odified entries that follow a
4348 * associated 'U'nmerged entry. */
4349 if (file->status == 'U') {
4350 unmerged = file;
4352 } else if (unmerged) {
4353 int collapse = !strcmp(buf, unmerged->new.name);
4355 unmerged = NULL;
4356 if (collapse) {
4357 free(file);
4358 view->lines--;
4359 continue;
4360 }
4361 }
4362 }
4364 /* Grab the old name for rename/copy. */
4365 if (!*file->old.name &&
4366 (file->status == 'R' || file->status == 'C')) {
4367 string_ncopy(file->old.name, buf, strlen(buf));
4369 buf = io_get(&io, 0, TRUE);
4370 if (!buf)
4371 break;
4372 }
4374 /* git-ls-files just delivers a NUL separated list of
4375 * file names similar to the second half of the
4376 * git-diff-* output. */
4377 string_ncopy(file->new.name, buf, strlen(buf));
4378 if (!*file->old.name)
4379 string_copy(file->old.name, file->new.name);
4380 file = NULL;
4381 }
4383 if (io_error(&io)) {
4384 error_out:
4385 done_io(&io);
4386 return FALSE;
4387 }
4389 if (!view->line[view->lines - 1].data)
4390 add_line_data(view, NULL, LINE_STAT_NONE);
4392 done_io(&io);
4393 return TRUE;
4394 }
4396 /* Don't show unmerged entries in the staged section. */
4397 static const char *status_diff_index_argv[] = {
4398 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4399 "--cached", "-M", "HEAD", NULL
4400 };
4402 static const char *status_diff_files_argv[] = {
4403 "git", "diff-files", "-z", NULL
4404 };
4406 static const char *status_list_other_argv[] = {
4407 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4408 };
4410 static const char *status_list_no_head_argv[] = {
4411 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4412 };
4414 static const char *update_index_argv[] = {
4415 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4416 };
4418 /* Restore the previous line number to stay in the context or select a
4419 * line with something that can be updated. */
4420 static void
4421 status_restore(struct view *view)
4422 {
4423 if (view->p_lineno >= view->lines)
4424 view->p_lineno = view->lines - 1;
4425 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4426 view->p_lineno++;
4427 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4428 view->p_lineno--;
4430 /* If the above fails, always skip the "On branch" line. */
4431 if (view->p_lineno < view->lines)
4432 view->lineno = view->p_lineno;
4433 else
4434 view->lineno = 1;
4436 if (view->lineno < view->offset)
4437 view->offset = view->lineno;
4438 else if (view->offset + view->height <= view->lineno)
4439 view->offset = view->lineno - view->height + 1;
4441 view->p_restore = FALSE;
4442 }
4444 /* First parse staged info using git-diff-index(1), then parse unstaged
4445 * info using git-diff-files(1), and finally untracked files using
4446 * git-ls-files(1). */
4447 static bool
4448 status_open(struct view *view)
4449 {
4450 reset_view(view);
4452 add_line_data(view, NULL, LINE_STAT_HEAD);
4453 if (is_initial_commit())
4454 string_copy(status_onbranch, "Initial commit");
4455 else if (!*opt_head)
4456 string_copy(status_onbranch, "Not currently on any branch");
4457 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4458 return FALSE;
4460 run_io_bg(update_index_argv);
4462 if (is_initial_commit()) {
4463 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4464 return FALSE;
4465 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4466 return FALSE;
4467 }
4469 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4470 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4471 return FALSE;
4473 /* Restore the exact position or use the specialized restore
4474 * mode? */
4475 if (!view->p_restore)
4476 status_restore(view);
4477 return TRUE;
4478 }
4480 static bool
4481 status_draw(struct view *view, struct line *line, unsigned int lineno)
4482 {
4483 struct status *status = line->data;
4484 enum line_type type;
4485 const char *text;
4487 if (!status) {
4488 switch (line->type) {
4489 case LINE_STAT_STAGED:
4490 type = LINE_STAT_SECTION;
4491 text = "Changes to be committed:";
4492 break;
4494 case LINE_STAT_UNSTAGED:
4495 type = LINE_STAT_SECTION;
4496 text = "Changed but not updated:";
4497 break;
4499 case LINE_STAT_UNTRACKED:
4500 type = LINE_STAT_SECTION;
4501 text = "Untracked files:";
4502 break;
4504 case LINE_STAT_NONE:
4505 type = LINE_DEFAULT;
4506 text = " (no files)";
4507 break;
4509 case LINE_STAT_HEAD:
4510 type = LINE_STAT_HEAD;
4511 text = status_onbranch;
4512 break;
4514 default:
4515 return FALSE;
4516 }
4517 } else {
4518 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4520 buf[0] = status->status;
4521 if (draw_text(view, line->type, buf, TRUE))
4522 return TRUE;
4523 type = LINE_DEFAULT;
4524 text = status->new.name;
4525 }
4527 draw_text(view, type, text, TRUE);
4528 return TRUE;
4529 }
4531 static enum request
4532 status_enter(struct view *view, struct line *line)
4533 {
4534 struct status *status = line->data;
4535 const char *oldpath = status ? status->old.name : NULL;
4536 /* Diffs for unmerged entries are empty when passing the new
4537 * path, so leave it empty. */
4538 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4539 const char *info;
4540 enum open_flags split;
4541 struct view *stage = VIEW(REQ_VIEW_STAGE);
4543 if (line->type == LINE_STAT_NONE ||
4544 (!status && line[1].type == LINE_STAT_NONE)) {
4545 report("No file to diff");
4546 return REQ_NONE;
4547 }
4549 switch (line->type) {
4550 case LINE_STAT_STAGED:
4551 if (is_initial_commit()) {
4552 const char *no_head_diff_argv[] = {
4553 "git", "diff", "--no-color", "--patch-with-stat",
4554 "--", "/dev/null", newpath, NULL
4555 };
4557 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4558 return REQ_QUIT;
4559 } else {
4560 const char *index_show_argv[] = {
4561 "git", "diff-index", "--root", "--patch-with-stat",
4562 "-C", "-M", "--cached", "HEAD", "--",
4563 oldpath, newpath, NULL
4564 };
4566 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4567 return REQ_QUIT;
4568 }
4570 if (status)
4571 info = "Staged changes to %s";
4572 else
4573 info = "Staged changes";
4574 break;
4576 case LINE_STAT_UNSTAGED:
4577 {
4578 const char *files_show_argv[] = {
4579 "git", "diff-files", "--root", "--patch-with-stat",
4580 "-C", "-M", "--", oldpath, newpath, NULL
4581 };
4583 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
4584 return REQ_QUIT;
4585 if (status)
4586 info = "Unstaged changes to %s";
4587 else
4588 info = "Unstaged changes";
4589 break;
4590 }
4591 case LINE_STAT_UNTRACKED:
4592 if (!newpath) {
4593 report("No file to show");
4594 return REQ_NONE;
4595 }
4597 if (!suffixcmp(status->new.name, -1, "/")) {
4598 report("Cannot display a directory");
4599 return REQ_NONE;
4600 }
4602 if (!prepare_update_file(stage, newpath))
4603 return REQ_QUIT;
4604 info = "Untracked file %s";
4605 break;
4607 case LINE_STAT_HEAD:
4608 return REQ_NONE;
4610 default:
4611 die("line type %d not handled in switch", line->type);
4612 }
4614 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4615 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
4616 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4617 if (status) {
4618 stage_status = *status;
4619 } else {
4620 memset(&stage_status, 0, sizeof(stage_status));
4621 }
4623 stage_line_type = line->type;
4624 stage_chunks = 0;
4625 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4626 }
4628 return REQ_NONE;
4629 }
4631 static bool
4632 status_exists(struct status *status, enum line_type type)
4633 {
4634 struct view *view = VIEW(REQ_VIEW_STATUS);
4635 unsigned long lineno;
4637 for (lineno = 0; lineno < view->lines; lineno++) {
4638 struct line *line = &view->line[lineno];
4639 struct status *pos = line->data;
4641 if (line->type != type)
4642 continue;
4643 if (!pos && (!status || !status->status) && line[1].data) {
4644 select_view_line(view, lineno);
4645 return TRUE;
4646 }
4647 if (pos && !strcmp(status->new.name, pos->new.name)) {
4648 select_view_line(view, lineno);
4649 return TRUE;
4650 }
4651 }
4653 return FALSE;
4654 }
4657 static bool
4658 status_update_prepare(struct io *io, enum line_type type)
4659 {
4660 const char *staged_argv[] = {
4661 "git", "update-index", "-z", "--index-info", NULL
4662 };
4663 const char *others_argv[] = {
4664 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
4665 };
4667 switch (type) {
4668 case LINE_STAT_STAGED:
4669 return run_io(io, staged_argv, opt_cdup, IO_WR);
4671 case LINE_STAT_UNSTAGED:
4672 return run_io(io, others_argv, opt_cdup, IO_WR);
4674 case LINE_STAT_UNTRACKED:
4675 return run_io(io, others_argv, NULL, IO_WR);
4677 default:
4678 die("line type %d not handled in switch", type);
4679 return FALSE;
4680 }
4681 }
4683 static bool
4684 status_update_write(struct io *io, struct status *status, enum line_type type)
4685 {
4686 char buf[SIZEOF_STR];
4687 size_t bufsize = 0;
4689 switch (type) {
4690 case LINE_STAT_STAGED:
4691 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4692 status->old.mode,
4693 status->old.rev,
4694 status->old.name, 0))
4695 return FALSE;
4696 break;
4698 case LINE_STAT_UNSTAGED:
4699 case LINE_STAT_UNTRACKED:
4700 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4701 return FALSE;
4702 break;
4704 default:
4705 die("line type %d not handled in switch", type);
4706 }
4708 return io_write(io, buf, bufsize);
4709 }
4711 static bool
4712 status_update_file(struct status *status, enum line_type type)
4713 {
4714 struct io io = {};
4715 bool result;
4717 if (!status_update_prepare(&io, type))
4718 return FALSE;
4720 result = status_update_write(&io, status, type);
4721 done_io(&io);
4722 return result;
4723 }
4725 static bool
4726 status_update_files(struct view *view, struct line *line)
4727 {
4728 struct io io = {};
4729 bool result = TRUE;
4730 struct line *pos = view->line + view->lines;
4731 int files = 0;
4732 int file, done;
4734 if (!status_update_prepare(&io, line->type))
4735 return FALSE;
4737 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4738 files++;
4740 for (file = 0, done = 0; result && file < files; line++, file++) {
4741 int almost_done = file * 100 / files;
4743 if (almost_done > done) {
4744 done = almost_done;
4745 string_format(view->ref, "updating file %u of %u (%d%% done)",
4746 file, files, done);
4747 update_view_title(view);
4748 }
4749 result = status_update_write(&io, line->data, line->type);
4750 }
4752 done_io(&io);
4753 return result;
4754 }
4756 static bool
4757 status_update(struct view *view)
4758 {
4759 struct line *line = &view->line[view->lineno];
4761 assert(view->lines);
4763 if (!line->data) {
4764 /* This should work even for the "On branch" line. */
4765 if (line < view->line + view->lines && !line[1].data) {
4766 report("Nothing to update");
4767 return FALSE;
4768 }
4770 if (!status_update_files(view, line + 1)) {
4771 report("Failed to update file status");
4772 return FALSE;
4773 }
4775 } else if (!status_update_file(line->data, line->type)) {
4776 report("Failed to update file status");
4777 return FALSE;
4778 }
4780 return TRUE;
4781 }
4783 static bool
4784 status_revert(struct status *status, enum line_type type, bool has_none)
4785 {
4786 if (!status || type != LINE_STAT_UNSTAGED) {
4787 if (type == LINE_STAT_STAGED) {
4788 report("Cannot revert changes to staged files");
4789 } else if (type == LINE_STAT_UNTRACKED) {
4790 report("Cannot revert changes to untracked files");
4791 } else if (has_none) {
4792 report("Nothing to revert");
4793 } else {
4794 report("Cannot revert changes to multiple files");
4795 }
4796 return FALSE;
4798 } else {
4799 const char *checkout_argv[] = {
4800 "git", "checkout", "--", status->old.name, NULL
4801 };
4803 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
4804 return FALSE;
4805 return run_io_fg(checkout_argv, opt_cdup);
4806 }
4807 }
4809 static enum request
4810 status_request(struct view *view, enum request request, struct line *line)
4811 {
4812 struct status *status = line->data;
4814 switch (request) {
4815 case REQ_STATUS_UPDATE:
4816 if (!status_update(view))
4817 return REQ_NONE;
4818 break;
4820 case REQ_STATUS_REVERT:
4821 if (!status_revert(status, line->type, status_has_none(view, line)))
4822 return REQ_NONE;
4823 break;
4825 case REQ_STATUS_MERGE:
4826 if (!status || status->status != 'U') {
4827 report("Merging only possible for files with unmerged status ('U').");
4828 return REQ_NONE;
4829 }
4830 open_mergetool(status->new.name);
4831 break;
4833 case REQ_EDIT:
4834 if (!status)
4835 return request;
4836 if (status->status == 'D') {
4837 report("File has been deleted.");
4838 return REQ_NONE;
4839 }
4841 open_editor(status->status != '?', status->new.name);
4842 break;
4844 case REQ_VIEW_BLAME:
4845 if (status) {
4846 string_copy(opt_file, status->new.name);
4847 opt_ref[0] = 0;
4848 }
4849 return request;
4851 case REQ_ENTER:
4852 /* After returning the status view has been split to
4853 * show the stage view. No further reloading is
4854 * necessary. */
4855 status_enter(view, line);
4856 return REQ_NONE;
4858 case REQ_REFRESH:
4859 /* Simply reload the view. */
4860 break;
4862 default:
4863 return request;
4864 }
4866 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4868 return REQ_NONE;
4869 }
4871 static void
4872 status_select(struct view *view, struct line *line)
4873 {
4874 struct status *status = line->data;
4875 char file[SIZEOF_STR] = "all files";
4876 const char *text;
4877 const char *key;
4879 if (status && !string_format(file, "'%s'", status->new.name))
4880 return;
4882 if (!status && line[1].type == LINE_STAT_NONE)
4883 line++;
4885 switch (line->type) {
4886 case LINE_STAT_STAGED:
4887 text = "Press %s to unstage %s for commit";
4888 break;
4890 case LINE_STAT_UNSTAGED:
4891 text = "Press %s to stage %s for commit";
4892 break;
4894 case LINE_STAT_UNTRACKED:
4895 text = "Press %s to stage %s for addition";
4896 break;
4898 case LINE_STAT_HEAD:
4899 case LINE_STAT_NONE:
4900 text = "Nothing to update";
4901 break;
4903 default:
4904 die("line type %d not handled in switch", line->type);
4905 }
4907 if (status && status->status == 'U') {
4908 text = "Press %s to resolve conflict in %s";
4909 key = get_key(REQ_STATUS_MERGE);
4911 } else {
4912 key = get_key(REQ_STATUS_UPDATE);
4913 }
4915 string_format(view->ref, text, key, file);
4916 }
4918 static bool
4919 status_grep(struct view *view, struct line *line)
4920 {
4921 struct status *status = line->data;
4922 enum { S_STATUS, S_NAME, S_END } state;
4923 char buf[2] = "?";
4924 regmatch_t pmatch;
4926 if (!status)
4927 return FALSE;
4929 for (state = S_STATUS; state < S_END; state++) {
4930 const char *text;
4932 switch (state) {
4933 case S_NAME: text = status->new.name; break;
4934 case S_STATUS:
4935 buf[0] = status->status;
4936 text = buf;
4937 break;
4939 default:
4940 return FALSE;
4941 }
4943 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4944 return TRUE;
4945 }
4947 return FALSE;
4948 }
4950 static struct view_ops status_ops = {
4951 "file",
4952 NULL,
4953 status_open,
4954 NULL,
4955 status_draw,
4956 status_request,
4957 status_grep,
4958 status_select,
4959 };
4962 static bool
4963 stage_diff_write(struct io *io, struct line *line, struct line *end)
4964 {
4965 while (line < end) {
4966 if (!io_write(io, line->data, strlen(line->data)) ||
4967 !io_write(io, "\n", 1))
4968 return FALSE;
4969 line++;
4970 if (line->type == LINE_DIFF_CHUNK ||
4971 line->type == LINE_DIFF_HEADER)
4972 break;
4973 }
4975 return TRUE;
4976 }
4978 static struct line *
4979 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4980 {
4981 for (; view->line < line; line--)
4982 if (line->type == type)
4983 return line;
4985 return NULL;
4986 }
4988 static bool
4989 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
4990 {
4991 const char *apply_argv[SIZEOF_ARG] = {
4992 "git", "apply", "--whitespace=nowarn", NULL
4993 };
4994 struct line *diff_hdr;
4995 struct io io = {};
4996 int argc = 3;
4998 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4999 if (!diff_hdr)
5000 return FALSE;
5002 if (!revert)
5003 apply_argv[argc++] = "--cached";
5004 if (revert || stage_line_type == LINE_STAT_STAGED)
5005 apply_argv[argc++] = "-R";
5006 apply_argv[argc++] = "-";
5007 apply_argv[argc++] = NULL;
5008 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5009 return FALSE;
5011 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5012 !stage_diff_write(&io, chunk, view->line + view->lines))
5013 chunk = NULL;
5015 done_io(&io);
5016 run_io_bg(update_index_argv);
5018 return chunk ? TRUE : FALSE;
5019 }
5021 static bool
5022 stage_update(struct view *view, struct line *line)
5023 {
5024 struct line *chunk = NULL;
5026 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5027 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5029 if (chunk) {
5030 if (!stage_apply_chunk(view, chunk, FALSE)) {
5031 report("Failed to apply chunk");
5032 return FALSE;
5033 }
5035 } else if (!stage_status.status) {
5036 view = VIEW(REQ_VIEW_STATUS);
5038 for (line = view->line; line < view->line + view->lines; line++)
5039 if (line->type == stage_line_type)
5040 break;
5042 if (!status_update_files(view, line + 1)) {
5043 report("Failed to update files");
5044 return FALSE;
5045 }
5047 } else if (!status_update_file(&stage_status, stage_line_type)) {
5048 report("Failed to update file");
5049 return FALSE;
5050 }
5052 return TRUE;
5053 }
5055 static bool
5056 stage_revert(struct view *view, struct line *line)
5057 {
5058 struct line *chunk = NULL;
5060 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5061 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5063 if (chunk) {
5064 if (!prompt_yesno("Are you sure you want to revert changes?"))
5065 return FALSE;
5067 if (!stage_apply_chunk(view, chunk, TRUE)) {
5068 report("Failed to revert chunk");
5069 return FALSE;
5070 }
5071 return TRUE;
5073 } else {
5074 return status_revert(stage_status.status ? &stage_status : NULL,
5075 stage_line_type, FALSE);
5076 }
5077 }
5080 static void
5081 stage_next(struct view *view, struct line *line)
5082 {
5083 int i;
5085 if (!stage_chunks) {
5086 static size_t alloc = 0;
5087 int *tmp;
5089 for (line = view->line; line < view->line + view->lines; line++) {
5090 if (line->type != LINE_DIFF_CHUNK)
5091 continue;
5093 tmp = realloc_items(stage_chunk, &alloc,
5094 stage_chunks, sizeof(*tmp));
5095 if (!tmp) {
5096 report("Allocation failure");
5097 return;
5098 }
5100 stage_chunk = tmp;
5101 stage_chunk[stage_chunks++] = line - view->line;
5102 }
5103 }
5105 for (i = 0; i < stage_chunks; i++) {
5106 if (stage_chunk[i] > view->lineno) {
5107 do_scroll_view(view, stage_chunk[i] - view->lineno);
5108 report("Chunk %d of %d", i + 1, stage_chunks);
5109 return;
5110 }
5111 }
5113 report("No next chunk found");
5114 }
5116 static enum request
5117 stage_request(struct view *view, enum request request, struct line *line)
5118 {
5119 switch (request) {
5120 case REQ_STATUS_UPDATE:
5121 if (!stage_update(view, line))
5122 return REQ_NONE;
5123 break;
5125 case REQ_STATUS_REVERT:
5126 if (!stage_revert(view, line))
5127 return REQ_NONE;
5128 break;
5130 case REQ_STAGE_NEXT:
5131 if (stage_line_type == LINE_STAT_UNTRACKED) {
5132 report("File is untracked; press %s to add",
5133 get_key(REQ_STATUS_UPDATE));
5134 return REQ_NONE;
5135 }
5136 stage_next(view, line);
5137 return REQ_NONE;
5139 case REQ_EDIT:
5140 if (!stage_status.new.name[0])
5141 return request;
5142 if (stage_status.status == 'D') {
5143 report("File has been deleted.");
5144 return REQ_NONE;
5145 }
5147 open_editor(stage_status.status != '?', stage_status.new.name);
5148 break;
5150 case REQ_REFRESH:
5151 /* Reload everything ... */
5152 break;
5154 case REQ_VIEW_BLAME:
5155 if (stage_status.new.name[0]) {
5156 string_copy(opt_file, stage_status.new.name);
5157 opt_ref[0] = 0;
5158 }
5159 return request;
5161 case REQ_ENTER:
5162 return pager_request(view, request, line);
5164 default:
5165 return request;
5166 }
5168 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5169 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
5171 /* Check whether the staged entry still exists, and close the
5172 * stage view if it doesn't. */
5173 if (!status_exists(&stage_status, stage_line_type)) {
5174 status_restore(VIEW(REQ_VIEW_STATUS));
5175 return REQ_VIEW_CLOSE;
5176 }
5178 if (stage_line_type == LINE_STAT_UNTRACKED) {
5179 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5180 report("Cannot display a directory");
5181 return REQ_NONE;
5182 }
5184 if (!prepare_update_file(view, stage_status.new.name)) {
5185 report("Failed to open file: %s", strerror(errno));
5186 return REQ_NONE;
5187 }
5188 }
5189 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5191 return REQ_NONE;
5192 }
5194 static struct view_ops stage_ops = {
5195 "line",
5196 NULL,
5197 NULL,
5198 pager_read,
5199 pager_draw,
5200 stage_request,
5201 pager_grep,
5202 pager_select,
5203 };
5206 /*
5207 * Revision graph
5208 */
5210 struct commit {
5211 char id[SIZEOF_REV]; /* SHA1 ID. */
5212 char title[128]; /* First line of the commit message. */
5213 char author[75]; /* Author of the commit. */
5214 struct tm time; /* Date from the author ident. */
5215 struct ref **refs; /* Repository references. */
5216 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5217 size_t graph_size; /* The width of the graph array. */
5218 bool has_parents; /* Rewritten --parents seen. */
5219 };
5221 /* Size of rev graph with no "padding" columns */
5222 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5224 struct rev_graph {
5225 struct rev_graph *prev, *next, *parents;
5226 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5227 size_t size;
5228 struct commit *commit;
5229 size_t pos;
5230 unsigned int boundary:1;
5231 };
5233 /* Parents of the commit being visualized. */
5234 static struct rev_graph graph_parents[4];
5236 /* The current stack of revisions on the graph. */
5237 static struct rev_graph graph_stacks[4] = {
5238 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5239 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5240 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5241 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5242 };
5244 static inline bool
5245 graph_parent_is_merge(struct rev_graph *graph)
5246 {
5247 return graph->parents->size > 1;
5248 }
5250 static inline void
5251 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5252 {
5253 struct commit *commit = graph->commit;
5255 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5256 commit->graph[commit->graph_size++] = symbol;
5257 }
5259 static void
5260 clear_rev_graph(struct rev_graph *graph)
5261 {
5262 graph->boundary = 0;
5263 graph->size = graph->pos = 0;
5264 graph->commit = NULL;
5265 memset(graph->parents, 0, sizeof(*graph->parents));
5266 }
5268 static void
5269 done_rev_graph(struct rev_graph *graph)
5270 {
5271 if (graph_parent_is_merge(graph) &&
5272 graph->pos < graph->size - 1 &&
5273 graph->next->size == graph->size + graph->parents->size - 1) {
5274 size_t i = graph->pos + graph->parents->size - 1;
5276 graph->commit->graph_size = i * 2;
5277 while (i < graph->next->size - 1) {
5278 append_to_rev_graph(graph, ' ');
5279 append_to_rev_graph(graph, '\\');
5280 i++;
5281 }
5282 }
5284 clear_rev_graph(graph);
5285 }
5287 static void
5288 push_rev_graph(struct rev_graph *graph, const char *parent)
5289 {
5290 int i;
5292 /* "Collapse" duplicate parents lines.
5293 *
5294 * FIXME: This needs to also update update the drawn graph but
5295 * for now it just serves as a method for pruning graph lines. */
5296 for (i = 0; i < graph->size; i++)
5297 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5298 return;
5300 if (graph->size < SIZEOF_REVITEMS) {
5301 string_copy_rev(graph->rev[graph->size++], parent);
5302 }
5303 }
5305 static chtype
5306 get_rev_graph_symbol(struct rev_graph *graph)
5307 {
5308 chtype symbol;
5310 if (graph->boundary)
5311 symbol = REVGRAPH_BOUND;
5312 else if (graph->parents->size == 0)
5313 symbol = REVGRAPH_INIT;
5314 else if (graph_parent_is_merge(graph))
5315 symbol = REVGRAPH_MERGE;
5316 else if (graph->pos >= graph->size)
5317 symbol = REVGRAPH_BRANCH;
5318 else
5319 symbol = REVGRAPH_COMMIT;
5321 return symbol;
5322 }
5324 static void
5325 draw_rev_graph(struct rev_graph *graph)
5326 {
5327 struct rev_filler {
5328 chtype separator, line;
5329 };
5330 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5331 static struct rev_filler fillers[] = {
5332 { ' ', '|' },
5333 { '`', '.' },
5334 { '\'', ' ' },
5335 { '/', ' ' },
5336 };
5337 chtype symbol = get_rev_graph_symbol(graph);
5338 struct rev_filler *filler;
5339 size_t i;
5341 if (opt_line_graphics)
5342 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5344 filler = &fillers[DEFAULT];
5346 for (i = 0; i < graph->pos; i++) {
5347 append_to_rev_graph(graph, filler->line);
5348 if (graph_parent_is_merge(graph->prev) &&
5349 graph->prev->pos == i)
5350 filler = &fillers[RSHARP];
5352 append_to_rev_graph(graph, filler->separator);
5353 }
5355 /* Place the symbol for this revision. */
5356 append_to_rev_graph(graph, symbol);
5358 if (graph->prev->size > graph->size)
5359 filler = &fillers[RDIAG];
5360 else
5361 filler = &fillers[DEFAULT];
5363 i++;
5365 for (; i < graph->size; i++) {
5366 append_to_rev_graph(graph, filler->separator);
5367 append_to_rev_graph(graph, filler->line);
5368 if (graph_parent_is_merge(graph->prev) &&
5369 i < graph->prev->pos + graph->parents->size)
5370 filler = &fillers[RSHARP];
5371 if (graph->prev->size > graph->size)
5372 filler = &fillers[LDIAG];
5373 }
5375 if (graph->prev->size > graph->size) {
5376 append_to_rev_graph(graph, filler->separator);
5377 if (filler->line != ' ')
5378 append_to_rev_graph(graph, filler->line);
5379 }
5380 }
5382 /* Prepare the next rev graph */
5383 static void
5384 prepare_rev_graph(struct rev_graph *graph)
5385 {
5386 size_t i;
5388 /* First, traverse all lines of revisions up to the active one. */
5389 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5390 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5391 break;
5393 push_rev_graph(graph->next, graph->rev[graph->pos]);
5394 }
5396 /* Interleave the new revision parent(s). */
5397 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5398 push_rev_graph(graph->next, graph->parents->rev[i]);
5400 /* Lastly, put any remaining revisions. */
5401 for (i = graph->pos + 1; i < graph->size; i++)
5402 push_rev_graph(graph->next, graph->rev[i]);
5403 }
5405 static void
5406 update_rev_graph(struct view *view, struct rev_graph *graph)
5407 {
5408 /* If this is the finalizing update ... */
5409 if (graph->commit)
5410 prepare_rev_graph(graph);
5412 /* Graph visualization needs a one rev look-ahead,
5413 * so the first update doesn't visualize anything. */
5414 if (!graph->prev->commit)
5415 return;
5417 if (view->lines > 2)
5418 view->line[view->lines - 3].dirty = 1;
5419 if (view->lines > 1)
5420 view->line[view->lines - 2].dirty = 1;
5421 draw_rev_graph(graph->prev);
5422 done_rev_graph(graph->prev->prev);
5423 }
5426 /*
5427 * Main view backend
5428 */
5430 static const char *main_argv[SIZEOF_ARG] = {
5431 "git", "log", "--no-color", "--pretty=raw", "--parents",
5432 "--topo-order", "%(head)", NULL
5433 };
5435 static bool
5436 main_draw(struct view *view, struct line *line, unsigned int lineno)
5437 {
5438 struct commit *commit = line->data;
5440 if (!*commit->author)
5441 return FALSE;
5443 if (opt_date && draw_date(view, &commit->time))
5444 return TRUE;
5446 if (opt_author &&
5447 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5448 return TRUE;
5450 if (opt_rev_graph && commit->graph_size &&
5451 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5452 return TRUE;
5454 if (opt_show_refs && commit->refs) {
5455 size_t i = 0;
5457 do {
5458 enum line_type type;
5460 if (commit->refs[i]->head)
5461 type = LINE_MAIN_HEAD;
5462 else if (commit->refs[i]->ltag)
5463 type = LINE_MAIN_LOCAL_TAG;
5464 else if (commit->refs[i]->tag)
5465 type = LINE_MAIN_TAG;
5466 else if (commit->refs[i]->tracked)
5467 type = LINE_MAIN_TRACKED;
5468 else if (commit->refs[i]->remote)
5469 type = LINE_MAIN_REMOTE;
5470 else
5471 type = LINE_MAIN_REF;
5473 if (draw_text(view, type, "[", TRUE) ||
5474 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5475 draw_text(view, type, "]", TRUE))
5476 return TRUE;
5478 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5479 return TRUE;
5480 } while (commit->refs[i++]->next);
5481 }
5483 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5484 return TRUE;
5485 }
5487 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5488 static bool
5489 main_read(struct view *view, char *line)
5490 {
5491 static struct rev_graph *graph = graph_stacks;
5492 enum line_type type;
5493 struct commit *commit;
5495 if (!line) {
5496 int i;
5498 if (!view->lines && !view->parent)
5499 die("No revisions match the given arguments.");
5500 if (view->lines > 0) {
5501 commit = view->line[view->lines - 1].data;
5502 view->line[view->lines - 1].dirty = 1;
5503 if (!*commit->author) {
5504 view->lines--;
5505 free(commit);
5506 graph->commit = NULL;
5507 }
5508 }
5509 update_rev_graph(view, graph);
5511 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5512 clear_rev_graph(&graph_stacks[i]);
5513 return TRUE;
5514 }
5516 type = get_line_type(line);
5517 if (type == LINE_COMMIT) {
5518 commit = calloc(1, sizeof(struct commit));
5519 if (!commit)
5520 return FALSE;
5522 line += STRING_SIZE("commit ");
5523 if (*line == '-') {
5524 graph->boundary = 1;
5525 line++;
5526 }
5528 string_copy_rev(commit->id, line);
5529 commit->refs = get_refs(commit->id);
5530 graph->commit = commit;
5531 add_line_data(view, commit, LINE_MAIN_COMMIT);
5533 while ((line = strchr(line, ' '))) {
5534 line++;
5535 push_rev_graph(graph->parents, line);
5536 commit->has_parents = TRUE;
5537 }
5538 return TRUE;
5539 }
5541 if (!view->lines)
5542 return TRUE;
5543 commit = view->line[view->lines - 1].data;
5545 switch (type) {
5546 case LINE_PARENT:
5547 if (commit->has_parents)
5548 break;
5549 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5550 break;
5552 case LINE_AUTHOR:
5553 {
5554 /* Parse author lines where the name may be empty:
5555 * author <email@address.tld> 1138474660 +0100
5556 */
5557 char *ident = line + STRING_SIZE("author ");
5558 char *nameend = strchr(ident, '<');
5559 char *emailend = strchr(ident, '>');
5561 if (!nameend || !emailend)
5562 break;
5564 update_rev_graph(view, graph);
5565 graph = graph->next;
5567 *nameend = *emailend = 0;
5568 ident = chomp_string(ident);
5569 if (!*ident) {
5570 ident = chomp_string(nameend + 1);
5571 if (!*ident)
5572 ident = "Unknown";
5573 }
5575 string_ncopy(commit->author, ident, strlen(ident));
5576 view->line[view->lines - 1].dirty = 1;
5578 /* Parse epoch and timezone */
5579 if (emailend[1] == ' ') {
5580 char *secs = emailend + 2;
5581 char *zone = strchr(secs, ' ');
5582 time_t time = (time_t) atol(secs);
5584 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5585 long tz;
5587 zone++;
5588 tz = ('0' - zone[1]) * 60 * 60 * 10;
5589 tz += ('0' - zone[2]) * 60 * 60;
5590 tz += ('0' - zone[3]) * 60;
5591 tz += ('0' - zone[4]) * 60;
5593 if (zone[0] == '-')
5594 tz = -tz;
5596 time -= tz;
5597 }
5599 gmtime_r(&time, &commit->time);
5600 }
5601 break;
5602 }
5603 default:
5604 /* Fill in the commit title if it has not already been set. */
5605 if (commit->title[0])
5606 break;
5608 /* Require titles to start with a non-space character at the
5609 * offset used by git log. */
5610 if (strncmp(line, " ", 4))
5611 break;
5612 line += 4;
5613 /* Well, if the title starts with a whitespace character,
5614 * try to be forgiving. Otherwise we end up with no title. */
5615 while (isspace(*line))
5616 line++;
5617 if (*line == '\0')
5618 break;
5619 /* FIXME: More graceful handling of titles; append "..." to
5620 * shortened titles, etc. */
5622 string_ncopy(commit->title, line, strlen(line));
5623 view->line[view->lines - 1].dirty = 1;
5624 }
5626 return TRUE;
5627 }
5629 static enum request
5630 main_request(struct view *view, enum request request, struct line *line)
5631 {
5632 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5634 switch (request) {
5635 case REQ_ENTER:
5636 open_view(view, REQ_VIEW_DIFF, flags);
5637 break;
5638 case REQ_REFRESH:
5639 load_refs();
5640 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5641 break;
5642 default:
5643 return request;
5644 }
5646 return REQ_NONE;
5647 }
5649 static bool
5650 grep_refs(struct ref **refs, regex_t *regex)
5651 {
5652 regmatch_t pmatch;
5653 size_t i = 0;
5655 if (!refs)
5656 return FALSE;
5657 do {
5658 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5659 return TRUE;
5660 } while (refs[i++]->next);
5662 return FALSE;
5663 }
5665 static bool
5666 main_grep(struct view *view, struct line *line)
5667 {
5668 struct commit *commit = line->data;
5669 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5670 char buf[DATE_COLS + 1];
5671 regmatch_t pmatch;
5673 for (state = S_TITLE; state < S_END; state++) {
5674 char *text;
5676 switch (state) {
5677 case S_TITLE: text = commit->title; break;
5678 case S_AUTHOR:
5679 if (!opt_author)
5680 continue;
5681 text = commit->author;
5682 break;
5683 case S_DATE:
5684 if (!opt_date)
5685 continue;
5686 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5687 continue;
5688 text = buf;
5689 break;
5690 case S_REFS:
5691 if (!opt_show_refs)
5692 continue;
5693 if (grep_refs(commit->refs, view->regex) == TRUE)
5694 return TRUE;
5695 continue;
5696 default:
5697 return FALSE;
5698 }
5700 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5701 return TRUE;
5702 }
5704 return FALSE;
5705 }
5707 static void
5708 main_select(struct view *view, struct line *line)
5709 {
5710 struct commit *commit = line->data;
5712 string_copy_rev(view->ref, commit->id);
5713 string_copy_rev(ref_commit, view->ref);
5714 }
5716 static struct view_ops main_ops = {
5717 "commit",
5718 main_argv,
5719 NULL,
5720 main_read,
5721 main_draw,
5722 main_request,
5723 main_grep,
5724 main_select,
5725 };
5728 /*
5729 * Unicode / UTF-8 handling
5730 *
5731 * NOTE: Much of the following code for dealing with unicode is derived from
5732 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5733 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5734 */
5736 /* I've (over)annotated a lot of code snippets because I am not entirely
5737 * confident that the approach taken by this small UTF-8 interface is correct.
5738 * --jonas */
5740 static inline int
5741 unicode_width(unsigned long c)
5742 {
5743 if (c >= 0x1100 &&
5744 (c <= 0x115f /* Hangul Jamo */
5745 || c == 0x2329
5746 || c == 0x232a
5747 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5748 /* CJK ... Yi */
5749 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5750 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5751 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5752 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5753 || (c >= 0xffe0 && c <= 0xffe6)
5754 || (c >= 0x20000 && c <= 0x2fffd)
5755 || (c >= 0x30000 && c <= 0x3fffd)))
5756 return 2;
5758 if (c == '\t')
5759 return opt_tab_size;
5761 return 1;
5762 }
5764 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5765 * Illegal bytes are set one. */
5766 static const unsigned char utf8_bytes[256] = {
5767 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,
5768 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,
5769 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,
5770 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,
5771 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,
5772 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,
5773 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,
5774 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,
5775 };
5777 /* Decode UTF-8 multi-byte representation into a unicode character. */
5778 static inline unsigned long
5779 utf8_to_unicode(const char *string, size_t length)
5780 {
5781 unsigned long unicode;
5783 switch (length) {
5784 case 1:
5785 unicode = string[0];
5786 break;
5787 case 2:
5788 unicode = (string[0] & 0x1f) << 6;
5789 unicode += (string[1] & 0x3f);
5790 break;
5791 case 3:
5792 unicode = (string[0] & 0x0f) << 12;
5793 unicode += ((string[1] & 0x3f) << 6);
5794 unicode += (string[2] & 0x3f);
5795 break;
5796 case 4:
5797 unicode = (string[0] & 0x0f) << 18;
5798 unicode += ((string[1] & 0x3f) << 12);
5799 unicode += ((string[2] & 0x3f) << 6);
5800 unicode += (string[3] & 0x3f);
5801 break;
5802 case 5:
5803 unicode = (string[0] & 0x0f) << 24;
5804 unicode += ((string[1] & 0x3f) << 18);
5805 unicode += ((string[2] & 0x3f) << 12);
5806 unicode += ((string[3] & 0x3f) << 6);
5807 unicode += (string[4] & 0x3f);
5808 break;
5809 case 6:
5810 unicode = (string[0] & 0x01) << 30;
5811 unicode += ((string[1] & 0x3f) << 24);
5812 unicode += ((string[2] & 0x3f) << 18);
5813 unicode += ((string[3] & 0x3f) << 12);
5814 unicode += ((string[4] & 0x3f) << 6);
5815 unicode += (string[5] & 0x3f);
5816 break;
5817 default:
5818 die("Invalid unicode length");
5819 }
5821 /* Invalid characters could return the special 0xfffd value but NUL
5822 * should be just as good. */
5823 return unicode > 0xffff ? 0 : unicode;
5824 }
5826 /* Calculates how much of string can be shown within the given maximum width
5827 * and sets trimmed parameter to non-zero value if all of string could not be
5828 * shown. If the reserve flag is TRUE, it will reserve at least one
5829 * trailing character, which can be useful when drawing a delimiter.
5830 *
5831 * Returns the number of bytes to output from string to satisfy max_width. */
5832 static size_t
5833 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5834 {
5835 const char *start = string;
5836 const char *end = strchr(string, '\0');
5837 unsigned char last_bytes = 0;
5838 size_t last_ucwidth = 0;
5840 *width = 0;
5841 *trimmed = 0;
5843 while (string < end) {
5844 int c = *(unsigned char *) string;
5845 unsigned char bytes = utf8_bytes[c];
5846 size_t ucwidth;
5847 unsigned long unicode;
5849 if (string + bytes > end)
5850 break;
5852 /* Change representation to figure out whether
5853 * it is a single- or double-width character. */
5855 unicode = utf8_to_unicode(string, bytes);
5856 /* FIXME: Graceful handling of invalid unicode character. */
5857 if (!unicode)
5858 break;
5860 ucwidth = unicode_width(unicode);
5861 *width += ucwidth;
5862 if (*width > max_width) {
5863 *trimmed = 1;
5864 *width -= ucwidth;
5865 if (reserve && *width == max_width) {
5866 string -= last_bytes;
5867 *width -= last_ucwidth;
5868 }
5869 break;
5870 }
5872 string += bytes;
5873 last_bytes = bytes;
5874 last_ucwidth = ucwidth;
5875 }
5877 return string - start;
5878 }
5881 /*
5882 * Status management
5883 */
5885 /* Whether or not the curses interface has been initialized. */
5886 static bool cursed = FALSE;
5888 /* The status window is used for polling keystrokes. */
5889 static WINDOW *status_win;
5891 static bool status_empty = TRUE;
5893 /* Update status and title window. */
5894 static void
5895 report(const char *msg, ...)
5896 {
5897 struct view *view = display[current_view];
5899 if (input_mode)
5900 return;
5902 if (!view) {
5903 char buf[SIZEOF_STR];
5904 va_list args;
5906 va_start(args, msg);
5907 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5908 buf[sizeof(buf) - 1] = 0;
5909 buf[sizeof(buf) - 2] = '.';
5910 buf[sizeof(buf) - 3] = '.';
5911 buf[sizeof(buf) - 4] = '.';
5912 }
5913 va_end(args);
5914 die("%s", buf);
5915 }
5917 if (!status_empty || *msg) {
5918 va_list args;
5920 va_start(args, msg);
5922 wmove(status_win, 0, 0);
5923 if (*msg) {
5924 vwprintw(status_win, msg, args);
5925 status_empty = FALSE;
5926 } else {
5927 status_empty = TRUE;
5928 }
5929 wclrtoeol(status_win);
5930 wrefresh(status_win);
5932 va_end(args);
5933 }
5935 update_view_title(view);
5936 update_display_cursor(view);
5937 }
5939 /* Controls when nodelay should be in effect when polling user input. */
5940 static void
5941 set_nonblocking_input(bool loading)
5942 {
5943 static unsigned int loading_views;
5945 if ((loading == FALSE && loading_views-- == 1) ||
5946 (loading == TRUE && loading_views++ == 0))
5947 nodelay(status_win, loading);
5948 }
5950 static void
5951 init_display(void)
5952 {
5953 int x, y;
5955 /* Initialize the curses library */
5956 if (isatty(STDIN_FILENO)) {
5957 cursed = !!initscr();
5958 opt_tty = stdin;
5959 } else {
5960 /* Leave stdin and stdout alone when acting as a pager. */
5961 opt_tty = fopen("/dev/tty", "r+");
5962 if (!opt_tty)
5963 die("Failed to open /dev/tty");
5964 cursed = !!newterm(NULL, opt_tty, opt_tty);
5965 }
5967 if (!cursed)
5968 die("Failed to initialize curses");
5970 nonl(); /* Tell curses not to do NL->CR/NL on output */
5971 cbreak(); /* Take input chars one at a time, no wait for \n */
5972 noecho(); /* Don't echo input */
5973 leaveok(stdscr, TRUE);
5975 if (has_colors())
5976 init_colors();
5978 getmaxyx(stdscr, y, x);
5979 status_win = newwin(1, 0, y - 1, 0);
5980 if (!status_win)
5981 die("Failed to create status window");
5983 /* Enable keyboard mapping */
5984 keypad(status_win, TRUE);
5985 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5987 TABSIZE = opt_tab_size;
5988 if (opt_line_graphics) {
5989 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5990 }
5991 }
5993 static int
5994 get_input(bool prompting)
5995 {
5996 struct view *view;
5997 int i, key;
5999 if (prompting)
6000 input_mode = TRUE;
6002 while (true) {
6003 foreach_view (view, i)
6004 update_view(view);
6006 /* Refresh, accept single keystroke of input */
6007 key = wgetch(status_win);
6009 /* wgetch() with nodelay() enabled returns ERR when
6010 * there's no input. */
6011 if (key == ERR) {
6012 doupdate();
6014 } else if (key == KEY_RESIZE) {
6015 int height, width;
6017 getmaxyx(stdscr, height, width);
6019 /* Resize the status view and let the view driver take
6020 * care of resizing the displayed views. */
6021 resize_display();
6022 redraw_display(TRUE);
6023 wresize(status_win, 1, width);
6024 mvwin(status_win, height - 1, 0);
6025 wrefresh(status_win);
6027 } else {
6028 input_mode = FALSE;
6029 return key;
6030 }
6031 }
6032 }
6034 static bool
6035 prompt_yesno(const char *prompt)
6036 {
6037 enum { WAIT, STOP, CANCEL } status = WAIT;
6038 bool answer = FALSE;
6040 while (status == WAIT) {
6041 int key;
6043 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
6044 wclrtoeol(status_win);
6046 key = get_input(TRUE);
6047 switch (key) {
6048 case 'y':
6049 case 'Y':
6050 answer = TRUE;
6051 status = STOP;
6052 break;
6054 case KEY_ESC:
6055 case KEY_RETURN:
6056 case KEY_ENTER:
6057 case KEY_BACKSPACE:
6058 case 'n':
6059 case 'N':
6060 case '\n':
6061 default:
6062 answer = FALSE;
6063 status = CANCEL;
6064 }
6065 }
6067 /* Clear the status window */
6068 status_empty = FALSE;
6069 report("");
6071 return answer;
6072 }
6074 static char *
6075 read_prompt(const char *prompt)
6076 {
6077 enum { READING, STOP, CANCEL } status = READING;
6078 static char buf[SIZEOF_STR];
6079 int pos = 0;
6081 while (status == READING) {
6082 int key;
6084 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6085 wclrtoeol(status_win);
6087 key = get_input(TRUE);
6088 switch (key) {
6089 case KEY_RETURN:
6090 case KEY_ENTER:
6091 case '\n':
6092 status = pos ? STOP : CANCEL;
6093 break;
6095 case KEY_BACKSPACE:
6096 if (pos > 0)
6097 pos--;
6098 else
6099 status = CANCEL;
6100 break;
6102 case KEY_ESC:
6103 status = CANCEL;
6104 break;
6106 default:
6107 if (pos >= sizeof(buf)) {
6108 report("Input string too long");
6109 return NULL;
6110 }
6112 if (isprint(key))
6113 buf[pos++] = (char) key;
6114 }
6115 }
6117 /* Clear the status window */
6118 status_empty = FALSE;
6119 report("");
6121 if (status == CANCEL)
6122 return NULL;
6124 buf[pos++] = 0;
6126 return buf;
6127 }
6129 /*
6130 * Repository properties
6131 */
6133 static int
6134 git_properties(const char **argv, const char *separators,
6135 int (*read_property)(char *, size_t, char *, size_t))
6136 {
6137 struct io io = {};
6139 if (init_io_rd(&io, argv, NULL, FORMAT_NONE))
6140 return read_properties(&io, separators, read_property);
6141 return ERR;
6142 }
6144 static struct ref *refs = NULL;
6145 static size_t refs_alloc = 0;
6146 static size_t refs_size = 0;
6148 /* Id <-> ref store */
6149 static struct ref ***id_refs = NULL;
6150 static size_t id_refs_alloc = 0;
6151 static size_t id_refs_size = 0;
6153 static int
6154 compare_refs(const void *ref1_, const void *ref2_)
6155 {
6156 const struct ref *ref1 = *(const struct ref **)ref1_;
6157 const struct ref *ref2 = *(const struct ref **)ref2_;
6159 if (ref1->tag != ref2->tag)
6160 return ref2->tag - ref1->tag;
6161 if (ref1->ltag != ref2->ltag)
6162 return ref2->ltag - ref2->ltag;
6163 if (ref1->head != ref2->head)
6164 return ref2->head - ref1->head;
6165 if (ref1->tracked != ref2->tracked)
6166 return ref2->tracked - ref1->tracked;
6167 if (ref1->remote != ref2->remote)
6168 return ref2->remote - ref1->remote;
6169 return strcmp(ref1->name, ref2->name);
6170 }
6172 static struct ref **
6173 get_refs(const char *id)
6174 {
6175 struct ref ***tmp_id_refs;
6176 struct ref **ref_list = NULL;
6177 size_t ref_list_alloc = 0;
6178 size_t ref_list_size = 0;
6179 size_t i;
6181 for (i = 0; i < id_refs_size; i++)
6182 if (!strcmp(id, id_refs[i][0]->id))
6183 return id_refs[i];
6185 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6186 sizeof(*id_refs));
6187 if (!tmp_id_refs)
6188 return NULL;
6190 id_refs = tmp_id_refs;
6192 for (i = 0; i < refs_size; i++) {
6193 struct ref **tmp;
6195 if (strcmp(id, refs[i].id))
6196 continue;
6198 tmp = realloc_items(ref_list, &ref_list_alloc,
6199 ref_list_size + 1, sizeof(*ref_list));
6200 if (!tmp) {
6201 if (ref_list)
6202 free(ref_list);
6203 return NULL;
6204 }
6206 ref_list = tmp;
6207 ref_list[ref_list_size] = &refs[i];
6208 /* XXX: The properties of the commit chains ensures that we can
6209 * safely modify the shared ref. The repo references will
6210 * always be similar for the same id. */
6211 ref_list[ref_list_size]->next = 1;
6213 ref_list_size++;
6214 }
6216 if (ref_list) {
6217 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6218 ref_list[ref_list_size - 1]->next = 0;
6219 id_refs[id_refs_size++] = ref_list;
6220 }
6222 return ref_list;
6223 }
6225 static int
6226 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6227 {
6228 struct ref *ref;
6229 bool tag = FALSE;
6230 bool ltag = FALSE;
6231 bool remote = FALSE;
6232 bool tracked = FALSE;
6233 bool check_replace = FALSE;
6234 bool head = FALSE;
6236 if (!prefixcmp(name, "refs/tags/")) {
6237 if (!suffixcmp(name, namelen, "^{}")) {
6238 namelen -= 3;
6239 name[namelen] = 0;
6240 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6241 check_replace = TRUE;
6242 } else {
6243 ltag = TRUE;
6244 }
6246 tag = TRUE;
6247 namelen -= STRING_SIZE("refs/tags/");
6248 name += STRING_SIZE("refs/tags/");
6250 } else if (!prefixcmp(name, "refs/remotes/")) {
6251 remote = TRUE;
6252 namelen -= STRING_SIZE("refs/remotes/");
6253 name += STRING_SIZE("refs/remotes/");
6254 tracked = !strcmp(opt_remote, name);
6256 } else if (!prefixcmp(name, "refs/heads/")) {
6257 namelen -= STRING_SIZE("refs/heads/");
6258 name += STRING_SIZE("refs/heads/");
6259 head = !strncmp(opt_head, name, namelen);
6261 } else if (!strcmp(name, "HEAD")) {
6262 string_ncopy(opt_head_rev, id, idlen);
6263 return OK;
6264 }
6266 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6267 /* it's an annotated tag, replace the previous sha1 with the
6268 * resolved commit id; relies on the fact git-ls-remote lists
6269 * the commit id of an annotated tag right before the commit id
6270 * it points to. */
6271 refs[refs_size - 1].ltag = ltag;
6272 string_copy_rev(refs[refs_size - 1].id, id);
6274 return OK;
6275 }
6276 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6277 if (!refs)
6278 return ERR;
6280 ref = &refs[refs_size++];
6281 ref->name = malloc(namelen + 1);
6282 if (!ref->name)
6283 return ERR;
6285 strncpy(ref->name, name, namelen);
6286 ref->name[namelen] = 0;
6287 ref->head = head;
6288 ref->tag = tag;
6289 ref->ltag = ltag;
6290 ref->remote = remote;
6291 ref->tracked = tracked;
6292 string_copy_rev(ref->id, id);
6294 return OK;
6295 }
6297 static int
6298 load_refs(void)
6299 {
6300 static const char *ls_remote_argv[SIZEOF_ARG] = {
6301 "git", "ls-remote", ".", NULL
6302 };
6303 static bool init = FALSE;
6305 if (!init) {
6306 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6307 init = TRUE;
6308 }
6310 if (!*opt_git_dir)
6311 return OK;
6313 while (refs_size > 0)
6314 free(refs[--refs_size].name);
6315 while (id_refs_size > 0)
6316 free(id_refs[--id_refs_size]);
6318 return git_properties(ls_remote_argv, "\t", read_ref);
6319 }
6321 static int
6322 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6323 {
6324 if (!strcmp(name, "i18n.commitencoding"))
6325 string_ncopy(opt_encoding, value, valuelen);
6327 if (!strcmp(name, "core.editor"))
6328 string_ncopy(opt_editor, value, valuelen);
6330 /* branch.<head>.remote */
6331 if (*opt_head &&
6332 !strncmp(name, "branch.", 7) &&
6333 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6334 !strcmp(name + 7 + strlen(opt_head), ".remote"))
6335 string_ncopy(opt_remote, value, valuelen);
6337 if (*opt_head && *opt_remote &&
6338 !strncmp(name, "branch.", 7) &&
6339 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6340 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
6341 size_t from = strlen(opt_remote);
6343 if (!prefixcmp(value, "refs/heads/")) {
6344 value += STRING_SIZE("refs/heads/");
6345 valuelen -= STRING_SIZE("refs/heads/");
6346 }
6348 if (!string_format_from(opt_remote, &from, "/%s", value))
6349 opt_remote[0] = 0;
6350 }
6352 return OK;
6353 }
6355 static int
6356 load_git_config(void)
6357 {
6358 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6360 return git_properties(config_list_argv, "=", read_repo_config_option);
6361 }
6363 static int
6364 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6365 {
6366 if (!opt_git_dir[0]) {
6367 string_ncopy(opt_git_dir, name, namelen);
6369 } else if (opt_is_inside_work_tree == -1) {
6370 /* This can be 3 different values depending on the
6371 * version of git being used. If git-rev-parse does not
6372 * understand --is-inside-work-tree it will simply echo
6373 * the option else either "true" or "false" is printed.
6374 * Default to true for the unknown case. */
6375 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6376 } else {
6377 string_ncopy(opt_cdup, name, namelen);
6378 }
6380 return OK;
6381 }
6383 static int
6384 load_repo_info(void)
6385 {
6386 const char *head_argv[] = {
6387 "git", "symbolic-ref", "HEAD", NULL
6388 };
6389 const char *rev_parse_argv[] = {
6390 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6391 "--show-cdup", NULL
6392 };
6394 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6395 chomp_string(opt_head);
6396 if (!prefixcmp(opt_head, "refs/heads/")) {
6397 char *offset = opt_head + STRING_SIZE("refs/heads/");
6399 memmove(opt_head, offset, strlen(offset) + 1);
6400 }
6401 }
6403 return git_properties(rev_parse_argv, "=", read_repo_info);
6404 }
6406 static int
6407 read_properties(struct io *io, const char *separators,
6408 int (*read_property)(char *, size_t, char *, size_t))
6409 {
6410 char *name;
6411 int state = OK;
6413 if (!start_io(io))
6414 return ERR;
6416 while (state == OK && (name = io_get(io, '\n', TRUE))) {
6417 char *value;
6418 size_t namelen;
6419 size_t valuelen;
6421 name = chomp_string(name);
6422 namelen = strcspn(name, separators);
6424 if (name[namelen]) {
6425 name[namelen] = 0;
6426 value = chomp_string(name + namelen + 1);
6427 valuelen = strlen(value);
6429 } else {
6430 value = "";
6431 valuelen = 0;
6432 }
6434 state = read_property(name, namelen, value, valuelen);
6435 }
6437 if (state != ERR && io_error(io))
6438 state = ERR;
6439 done_io(io);
6441 return state;
6442 }
6445 /*
6446 * Main
6447 */
6449 static void __NORETURN
6450 quit(int sig)
6451 {
6452 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6453 if (cursed)
6454 endwin();
6455 exit(0);
6456 }
6458 static void __NORETURN
6459 die(const char *err, ...)
6460 {
6461 va_list args;
6463 endwin();
6465 va_start(args, err);
6466 fputs("tig: ", stderr);
6467 vfprintf(stderr, err, args);
6468 fputs("\n", stderr);
6469 va_end(args);
6471 exit(1);
6472 }
6474 static void
6475 warn(const char *msg, ...)
6476 {
6477 va_list args;
6479 va_start(args, msg);
6480 fputs("tig warning: ", stderr);
6481 vfprintf(stderr, msg, args);
6482 fputs("\n", stderr);
6483 va_end(args);
6484 }
6486 int
6487 main(int argc, const char *argv[])
6488 {
6489 const char **run_argv = NULL;
6490 struct view *view;
6491 enum request request;
6492 size_t i;
6494 signal(SIGINT, quit);
6496 if (setlocale(LC_ALL, "")) {
6497 char *codeset = nl_langinfo(CODESET);
6499 string_ncopy(opt_codeset, codeset, strlen(codeset));
6500 }
6502 if (load_repo_info() == ERR)
6503 die("Failed to load repo info.");
6505 if (load_options() == ERR)
6506 die("Failed to load user config.");
6508 if (load_git_config() == ERR)
6509 die("Failed to load repo config.");
6511 request = parse_options(argc, argv, &run_argv);
6512 if (request == REQ_NONE)
6513 return 0;
6515 /* Require a git repository unless when running in pager mode. */
6516 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6517 die("Not a git repository");
6519 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6520 opt_utf8 = FALSE;
6522 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6523 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6524 if (opt_iconv == ICONV_NONE)
6525 die("Failed to initialize character set conversion");
6526 }
6528 if (load_refs() == ERR)
6529 die("Failed to load refs.");
6531 foreach_view (view, i)
6532 argv_from_env(view->ops->argv, view->cmd_env);
6534 init_display();
6536 if (request == REQ_VIEW_PAGER || run_argv) {
6537 if (request == REQ_VIEW_PAGER)
6538 io_open(&VIEW(request)->io, "");
6539 else if (!prepare_update(VIEW(request), run_argv, NULL, FORMAT_NONE))
6540 die("Failed to format arguments");
6541 open_view(NULL, request, OPEN_PREPARED);
6542 request = REQ_NONE;
6543 }
6545 while (view_driver(display[current_view], request)) {
6546 int key = get_input(FALSE);
6548 view = display[current_view];
6549 request = get_keybinding(view->keymap, key);
6551 /* Some low-level request handling. This keeps access to
6552 * status_win restricted. */
6553 switch (request) {
6554 case REQ_PROMPT:
6555 {
6556 char *cmd = read_prompt(":");
6558 if (cmd) {
6559 struct view *next = VIEW(REQ_VIEW_PAGER);
6560 const char *argv[SIZEOF_ARG] = { "git" };
6561 int argc = 1;
6563 /* When running random commands, initially show the
6564 * command in the title. However, it maybe later be
6565 * overwritten if a commit line is selected. */
6566 string_ncopy(next->ref, cmd, strlen(cmd));
6568 if (!argv_from_string(argv, &argc, cmd)) {
6569 report("Too many arguments");
6570 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
6571 report("Failed to format command");
6572 } else {
6573 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6574 }
6575 }
6577 request = REQ_NONE;
6578 break;
6579 }
6580 case REQ_SEARCH:
6581 case REQ_SEARCH_BACK:
6582 {
6583 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6584 char *search = read_prompt(prompt);
6586 if (search)
6587 string_ncopy(opt_search, search, strlen(search));
6588 else
6589 request = REQ_NONE;
6590 break;
6591 }
6592 default:
6593 break;
6594 }
6595 }
6597 quit(0);
6599 return 0;
6600 }