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1 /* Copyright (c) 2006-2009 Jonas Fonseca <fonseca@diku.dk>
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
14 #ifdef HAVE_CONFIG_H
15 #include "config.h"
16 #endif
18 #ifndef TIG_VERSION
19 #define TIG_VERSION "unknown-version"
20 #endif
22 #ifndef DEBUG
23 #define NDEBUG
24 #endif
26 #include <assert.h>
27 #include <errno.h>
28 #include <ctype.h>
29 #include <signal.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <sys/stat.h>
37 #include <sys/select.h>
38 #include <unistd.h>
39 #include <time.h>
40 #include <fcntl.h>
42 #include <regex.h>
44 #include <locale.h>
45 #include <langinfo.h>
46 #include <iconv.h>
48 /* ncurses(3): Must be defined to have extended wide-character functions. */
49 #define _XOPEN_SOURCE_EXTENDED
51 #ifdef HAVE_NCURSESW_NCURSES_H
52 #include <ncursesw/ncurses.h>
53 #else
54 #ifdef HAVE_NCURSES_NCURSES_H
55 #include <ncurses/ncurses.h>
56 #else
57 #include <ncurses.h>
58 #endif
59 #endif
61 #if __GNUC__ >= 3
62 #define __NORETURN __attribute__((__noreturn__))
63 #else
64 #define __NORETURN
65 #endif
67 static void __NORETURN die(const char *err, ...);
68 static void warn(const char *msg, ...);
69 static void report(const char *msg, ...);
70 static void set_nonblocking_input(bool loading);
71 static size_t utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve);
72 static bool prompt_yesno(const char *prompt);
73 static int load_refs(void);
75 #define ABS(x) ((x) >= 0 ? (x) : -(x))
76 #define MIN(x, y) ((x) < (y) ? (x) : (y))
78 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
79 #define STRING_SIZE(x) (sizeof(x) - 1)
81 #define SIZEOF_STR 1024 /* Default string size. */
82 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
83 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
84 #define SIZEOF_ARG 32 /* Default argument array size. */
86 /* Revision graph */
88 #define REVGRAPH_INIT 'I'
89 #define REVGRAPH_MERGE 'M'
90 #define REVGRAPH_BRANCH '+'
91 #define REVGRAPH_COMMIT '*'
92 #define REVGRAPH_BOUND '^'
94 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
96 /* This color name can be used to refer to the default term colors. */
97 #define COLOR_DEFAULT (-1)
99 #define ICONV_NONE ((iconv_t) -1)
100 #ifndef ICONV_CONST
101 #define ICONV_CONST /* nothing */
102 #endif
104 /* The format and size of the date column in the main view. */
105 #define DATE_FORMAT "%Y-%m-%d %H:%M"
106 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
108 #define AUTHOR_COLS 20
109 #define ID_COLS 8
111 /* The default interval between line numbers. */
112 #define NUMBER_INTERVAL 5
114 #define TAB_SIZE 8
116 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
118 #define NULL_ID "0000000000000000000000000000000000000000"
120 #ifndef GIT_CONFIG
121 #define GIT_CONFIG "config"
122 #endif
124 /* Some ascii-shorthands fitted into the ncurses namespace. */
125 #define KEY_TAB '\t'
126 #define KEY_RETURN '\r'
127 #define KEY_ESC 27
130 struct ref {
131 char *name; /* Ref name; tag or head names are shortened. */
132 char id[SIZEOF_REV]; /* Commit SHA1 ID */
133 unsigned int head:1; /* Is it the current HEAD? */
134 unsigned int tag:1; /* Is it a tag? */
135 unsigned int ltag:1; /* If so, is the tag local? */
136 unsigned int remote:1; /* Is it a remote ref? */
137 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
138 unsigned int next:1; /* For ref lists: are there more refs? */
139 };
141 static struct ref **get_refs(const char *id);
143 enum format_flags {
144 FORMAT_ALL, /* Perform replacement in all arguments. */
145 FORMAT_DASH, /* Perform replacement up until "--". */
146 FORMAT_NONE /* No replacement should be performed. */
147 };
149 static bool format_argv(const char *dst[], const char *src[], enum format_flags flags);
151 struct int_map {
152 const char *name;
153 int namelen;
154 int value;
155 };
157 static int
158 set_from_int_map(struct int_map *map, size_t map_size,
159 int *value, const char *name, int namelen)
160 {
162 int i;
164 for (i = 0; i < map_size; i++)
165 if (namelen == map[i].namelen &&
166 !strncasecmp(name, map[i].name, namelen)) {
167 *value = map[i].value;
168 return OK;
169 }
171 return ERR;
172 }
175 /*
176 * String helpers
177 */
179 static inline void
180 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
181 {
182 if (srclen > dstlen - 1)
183 srclen = dstlen - 1;
185 strncpy(dst, src, srclen);
186 dst[srclen] = 0;
187 }
189 /* Shorthands for safely copying into a fixed buffer. */
191 #define string_copy(dst, src) \
192 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
194 #define string_ncopy(dst, src, srclen) \
195 string_ncopy_do(dst, sizeof(dst), src, srclen)
197 #define string_copy_rev(dst, src) \
198 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
200 #define string_add(dst, from, src) \
201 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
203 static char *
204 chomp_string(char *name)
205 {
206 int namelen;
208 while (isspace(*name))
209 name++;
211 namelen = strlen(name) - 1;
212 while (namelen > 0 && isspace(name[namelen]))
213 name[namelen--] = 0;
215 return name;
216 }
218 static bool
219 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
220 {
221 va_list args;
222 size_t pos = bufpos ? *bufpos : 0;
224 va_start(args, fmt);
225 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
226 va_end(args);
228 if (bufpos)
229 *bufpos = pos;
231 return pos >= bufsize ? FALSE : TRUE;
232 }
234 #define string_format(buf, fmt, args...) \
235 string_nformat(buf, sizeof(buf), NULL, fmt, args)
237 #define string_format_from(buf, from, fmt, args...) \
238 string_nformat(buf, sizeof(buf), from, fmt, args)
240 static int
241 string_enum_compare(const char *str1, const char *str2, int len)
242 {
243 size_t i;
245 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
247 /* Diff-Header == DIFF_HEADER */
248 for (i = 0; i < len; i++) {
249 if (toupper(str1[i]) == toupper(str2[i]))
250 continue;
252 if (string_enum_sep(str1[i]) &&
253 string_enum_sep(str2[i]))
254 continue;
256 return str1[i] - str2[i];
257 }
259 return 0;
260 }
262 #define prefixcmp(str1, str2) \
263 strncmp(str1, str2, STRING_SIZE(str2))
265 static inline int
266 suffixcmp(const char *str, int slen, const char *suffix)
267 {
268 size_t len = slen >= 0 ? slen : strlen(str);
269 size_t suffixlen = strlen(suffix);
271 return suffixlen < len ? strcmp(str + len - suffixlen, suffix) : -1;
272 }
275 static bool
276 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
277 {
278 int valuelen;
280 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
281 bool advance = cmd[valuelen] != 0;
283 cmd[valuelen] = 0;
284 argv[(*argc)++] = chomp_string(cmd);
285 cmd += valuelen + advance;
286 }
288 if (*argc < SIZEOF_ARG)
289 argv[*argc] = NULL;
290 return *argc < SIZEOF_ARG;
291 }
293 static void
294 argv_from_env(const char **argv, const char *name)
295 {
296 char *env = argv ? getenv(name) : NULL;
297 int argc = 0;
299 if (env && *env)
300 env = strdup(env);
301 if (env && !argv_from_string(argv, &argc, env))
302 die("Too many arguments in the `%s` environment variable", name);
303 }
306 /*
307 * Executing external commands.
308 */
310 enum io_type {
311 IO_FD, /* File descriptor based IO. */
312 IO_BG, /* Execute command in the background. */
313 IO_FG, /* Execute command with same std{in,out,err}. */
314 IO_RD, /* Read only fork+exec IO. */
315 IO_WR, /* Write only fork+exec IO. */
316 };
318 struct io {
319 enum io_type type; /* The requested type of pipe. */
320 const char *dir; /* Directory from which to execute. */
321 pid_t pid; /* Pipe for reading or writing. */
322 int pipe; /* Pipe end for reading or writing. */
323 int error; /* Error status. */
324 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
325 char *buf; /* Read buffer. */
326 size_t bufalloc; /* Allocated buffer size. */
327 size_t bufsize; /* Buffer content size. */
328 char *bufpos; /* Current buffer position. */
329 unsigned int eof:1; /* Has end of file been reached. */
330 };
332 static void
333 reset_io(struct io *io)
334 {
335 io->pipe = -1;
336 io->pid = 0;
337 io->buf = io->bufpos = NULL;
338 io->bufalloc = io->bufsize = 0;
339 io->error = 0;
340 io->eof = 0;
341 }
343 static void
344 init_io(struct io *io, const char *dir, enum io_type type)
345 {
346 reset_io(io);
347 io->type = type;
348 io->dir = dir;
349 }
351 static bool
352 init_io_rd(struct io *io, const char *argv[], const char *dir,
353 enum format_flags flags)
354 {
355 init_io(io, dir, IO_RD);
356 return format_argv(io->argv, argv, flags);
357 }
359 static bool
360 io_open(struct io *io, const char *name)
361 {
362 init_io(io, NULL, IO_FD);
363 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
364 return io->pipe != -1;
365 }
367 static bool
368 kill_io(struct io *io)
369 {
370 return kill(io->pid, SIGKILL) != -1;
371 }
373 static bool
374 done_io(struct io *io)
375 {
376 pid_t pid = io->pid;
378 if (io->pipe != -1)
379 close(io->pipe);
380 free(io->buf);
381 reset_io(io);
383 while (pid > 0) {
384 int status;
385 pid_t waiting = waitpid(pid, &status, 0);
387 if (waiting < 0) {
388 if (errno == EINTR)
389 continue;
390 report("waitpid failed (%s)", strerror(errno));
391 return FALSE;
392 }
394 return waiting == pid &&
395 !WIFSIGNALED(status) &&
396 WIFEXITED(status) &&
397 !WEXITSTATUS(status);
398 }
400 return TRUE;
401 }
403 static bool
404 start_io(struct io *io)
405 {
406 int pipefds[2] = { -1, -1 };
408 if (io->type == IO_FD)
409 return TRUE;
411 if ((io->type == IO_RD || io->type == IO_WR) &&
412 pipe(pipefds) < 0)
413 return FALSE;
415 if ((io->pid = fork())) {
416 if (pipefds[!(io->type == IO_WR)] != -1)
417 close(pipefds[!(io->type == IO_WR)]);
418 if (io->pid != -1) {
419 io->pipe = pipefds[!!(io->type == IO_WR)];
420 return TRUE;
421 }
423 } else {
424 if (io->type != IO_FG) {
425 int devnull = open("/dev/null", O_RDWR);
426 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
427 int writefd = io->type == IO_RD ? pipefds[1] : devnull;
429 dup2(readfd, STDIN_FILENO);
430 dup2(writefd, STDOUT_FILENO);
431 dup2(devnull, STDERR_FILENO);
433 close(devnull);
434 if (pipefds[0] != -1)
435 close(pipefds[0]);
436 if (pipefds[1] != -1)
437 close(pipefds[1]);
438 }
440 if (io->dir && *io->dir && chdir(io->dir) == -1)
441 die("Failed to change directory: %s", strerror(errno));
443 execvp(io->argv[0], (char *const*) io->argv);
444 die("Failed to execute program: %s", strerror(errno));
445 }
447 if (pipefds[!!(io->type == IO_WR)] != -1)
448 close(pipefds[!!(io->type == IO_WR)]);
449 return FALSE;
450 }
452 static bool
453 run_io(struct io *io, const char **argv, const char *dir, enum io_type type)
454 {
455 init_io(io, dir, type);
456 if (!format_argv(io->argv, argv, FORMAT_NONE))
457 return FALSE;
458 return start_io(io);
459 }
461 static int
462 run_io_do(struct io *io)
463 {
464 return start_io(io) && done_io(io);
465 }
467 static int
468 run_io_bg(const char **argv)
469 {
470 struct io io = {};
472 init_io(&io, NULL, IO_BG);
473 if (!format_argv(io.argv, argv, FORMAT_NONE))
474 return FALSE;
475 return run_io_do(&io);
476 }
478 static bool
479 run_io_fg(const char **argv, const char *dir)
480 {
481 struct io io = {};
483 init_io(&io, dir, IO_FG);
484 if (!format_argv(io.argv, argv, FORMAT_NONE))
485 return FALSE;
486 return run_io_do(&io);
487 }
489 static bool
490 run_io_rd(struct io *io, const char **argv, enum format_flags flags)
491 {
492 return init_io_rd(io, argv, NULL, flags) && start_io(io);
493 }
495 static bool
496 io_eof(struct io *io)
497 {
498 return io->eof;
499 }
501 static int
502 io_error(struct io *io)
503 {
504 return io->error;
505 }
507 static bool
508 io_strerror(struct io *io)
509 {
510 return strerror(io->error);
511 }
513 static bool
514 io_can_read(struct io *io)
515 {
516 struct timeval tv = { 0, 500 };
517 fd_set fds;
519 FD_ZERO(&fds);
520 FD_SET(io->pipe, &fds);
522 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
523 }
525 static ssize_t
526 io_read(struct io *io, void *buf, size_t bufsize)
527 {
528 do {
529 ssize_t readsize = read(io->pipe, buf, bufsize);
531 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
532 continue;
533 else if (readsize == -1)
534 io->error = errno;
535 else if (readsize == 0)
536 io->eof = 1;
537 return readsize;
538 } while (1);
539 }
541 static char *
542 io_get(struct io *io, int c, bool can_read)
543 {
544 char *eol;
545 ssize_t readsize;
547 if (!io->buf) {
548 io->buf = io->bufpos = malloc(BUFSIZ);
549 if (!io->buf)
550 return NULL;
551 io->bufalloc = BUFSIZ;
552 io->bufsize = 0;
553 }
555 while (TRUE) {
556 if (io->bufsize > 0) {
557 eol = memchr(io->bufpos, c, io->bufsize);
558 if (eol) {
559 char *line = io->bufpos;
561 *eol = 0;
562 io->bufpos = eol + 1;
563 io->bufsize -= io->bufpos - line;
564 return line;
565 }
566 }
568 if (io_eof(io)) {
569 if (io->bufsize) {
570 io->bufpos[io->bufsize] = 0;
571 io->bufsize = 0;
572 return io->bufpos;
573 }
574 return NULL;
575 }
577 if (!can_read)
578 return NULL;
580 if (io->bufsize > 0 && io->bufpos > io->buf)
581 memmove(io->buf, io->bufpos, io->bufsize);
583 io->bufpos = io->buf;
584 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
585 if (io_error(io))
586 return NULL;
587 io->bufsize += readsize;
588 }
589 }
591 static bool
592 io_write(struct io *io, const void *buf, size_t bufsize)
593 {
594 size_t written = 0;
596 while (!io_error(io) && written < bufsize) {
597 ssize_t size;
599 size = write(io->pipe, buf + written, bufsize - written);
600 if (size < 0 && (errno == EAGAIN || errno == EINTR))
601 continue;
602 else if (size == -1)
603 io->error = errno;
604 else
605 written += size;
606 }
608 return written == bufsize;
609 }
611 static bool
612 run_io_buf(const char **argv, char buf[], size_t bufsize)
613 {
614 struct io io = {};
615 bool error;
617 if (!run_io_rd(&io, argv, FORMAT_NONE))
618 return FALSE;
620 io.buf = io.bufpos = buf;
621 io.bufalloc = bufsize;
622 error = !io_get(&io, '\n', TRUE) && io_error(&io);
623 io.buf = NULL;
625 return done_io(&io) || error;
626 }
628 static int read_properties(struct io *io, const char *separators, int (*read)(char *, size_t, char *, size_t));
630 /*
631 * User requests
632 */
634 #define REQ_INFO \
635 /* XXX: Keep the view request first and in sync with views[]. */ \
636 REQ_GROUP("View switching") \
637 REQ_(VIEW_MAIN, "Show main view"), \
638 REQ_(VIEW_DIFF, "Show diff view"), \
639 REQ_(VIEW_LOG, "Show log view"), \
640 REQ_(VIEW_TREE, "Show tree view"), \
641 REQ_(VIEW_BLOB, "Show blob view"), \
642 REQ_(VIEW_BLAME, "Show blame view"), \
643 REQ_(VIEW_HELP, "Show help page"), \
644 REQ_(VIEW_PAGER, "Show pager view"), \
645 REQ_(VIEW_STATUS, "Show status view"), \
646 REQ_(VIEW_STAGE, "Show stage view"), \
647 \
648 REQ_GROUP("View manipulation") \
649 REQ_(ENTER, "Enter current line and scroll"), \
650 REQ_(NEXT, "Move to next"), \
651 REQ_(PREVIOUS, "Move to previous"), \
652 REQ_(VIEW_NEXT, "Move focus to next view"), \
653 REQ_(REFRESH, "Reload and refresh"), \
654 REQ_(MAXIMIZE, "Maximize the current view"), \
655 REQ_(VIEW_CLOSE, "Close the current view"), \
656 REQ_(QUIT, "Close all views and quit"), \
657 \
658 REQ_GROUP("View specific requests") \
659 REQ_(STATUS_UPDATE, "Update file status"), \
660 REQ_(STATUS_REVERT, "Revert file changes"), \
661 REQ_(STATUS_MERGE, "Merge file using external tool"), \
662 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
663 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
664 \
665 REQ_GROUP("Cursor navigation") \
666 REQ_(MOVE_UP, "Move cursor one line up"), \
667 REQ_(MOVE_DOWN, "Move cursor one line down"), \
668 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
669 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
670 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
671 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
672 \
673 REQ_GROUP("Scrolling") \
674 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
675 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
676 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
677 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
678 \
679 REQ_GROUP("Searching") \
680 REQ_(SEARCH, "Search the view"), \
681 REQ_(SEARCH_BACK, "Search backwards in the view"), \
682 REQ_(FIND_NEXT, "Find next search match"), \
683 REQ_(FIND_PREV, "Find previous search match"), \
684 \
685 REQ_GROUP("Option manipulation") \
686 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
687 REQ_(TOGGLE_DATE, "Toggle date display"), \
688 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
689 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
690 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
691 \
692 REQ_GROUP("Misc") \
693 REQ_(PROMPT, "Bring up the prompt"), \
694 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
695 REQ_(SCREEN_RESIZE, "Resize the screen"), \
696 REQ_(SHOW_VERSION, "Show version information"), \
697 REQ_(STOP_LOADING, "Stop all loading views"), \
698 REQ_(EDIT, "Open in editor"), \
699 REQ_(NONE, "Do nothing")
702 /* User action requests. */
703 enum request {
704 #define REQ_GROUP(help)
705 #define REQ_(req, help) REQ_##req
707 /* Offset all requests to avoid conflicts with ncurses getch values. */
708 REQ_OFFSET = KEY_MAX + 1,
709 REQ_INFO
711 #undef REQ_GROUP
712 #undef REQ_
713 };
715 struct request_info {
716 enum request request;
717 const char *name;
718 int namelen;
719 const char *help;
720 };
722 static struct request_info req_info[] = {
723 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
724 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
725 REQ_INFO
726 #undef REQ_GROUP
727 #undef REQ_
728 };
730 static enum request
731 get_request(const char *name)
732 {
733 int namelen = strlen(name);
734 int i;
736 for (i = 0; i < ARRAY_SIZE(req_info); i++)
737 if (req_info[i].namelen == namelen &&
738 !string_enum_compare(req_info[i].name, name, namelen))
739 return req_info[i].request;
741 return REQ_NONE;
742 }
745 /*
746 * Options
747 */
749 static const char usage[] =
750 "tig " TIG_VERSION " (" __DATE__ ")\n"
751 "\n"
752 "Usage: tig [options] [revs] [--] [paths]\n"
753 " or: tig show [options] [revs] [--] [paths]\n"
754 " or: tig blame [rev] path\n"
755 " or: tig status\n"
756 " or: tig < [git command output]\n"
757 "\n"
758 "Options:\n"
759 " -v, --version Show version and exit\n"
760 " -h, --help Show help message and exit";
762 /* Option and state variables. */
763 static bool opt_date = TRUE;
764 static bool opt_author = TRUE;
765 static bool opt_line_number = FALSE;
766 static bool opt_line_graphics = TRUE;
767 static bool opt_rev_graph = FALSE;
768 static bool opt_show_refs = TRUE;
769 static int opt_num_interval = NUMBER_INTERVAL;
770 static int opt_tab_size = TAB_SIZE;
771 static int opt_author_cols = AUTHOR_COLS-1;
772 static char opt_path[SIZEOF_STR] = "";
773 static char opt_file[SIZEOF_STR] = "";
774 static char opt_ref[SIZEOF_REF] = "";
775 static char opt_head[SIZEOF_REF] = "";
776 static char opt_head_rev[SIZEOF_REV] = "";
777 static char opt_remote[SIZEOF_REF] = "";
778 static char opt_encoding[20] = "UTF-8";
779 static bool opt_utf8 = TRUE;
780 static char opt_codeset[20] = "UTF-8";
781 static iconv_t opt_iconv = ICONV_NONE;
782 static char opt_search[SIZEOF_STR] = "";
783 static char opt_cdup[SIZEOF_STR] = "";
784 static char opt_git_dir[SIZEOF_STR] = "";
785 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
786 static char opt_editor[SIZEOF_STR] = "";
787 static FILE *opt_tty = NULL;
789 #define is_initial_commit() (!*opt_head_rev)
790 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || !strcmp(opt_head_rev, (rev)))
792 static enum request
793 parse_options(int argc, const char *argv[], const char ***run_argv)
794 {
795 enum request request = REQ_VIEW_MAIN;
796 const char *subcommand;
797 bool seen_dashdash = FALSE;
798 /* XXX: This is vulnerable to the user overriding options
799 * required for the main view parser. */
800 static const char *custom_argv[SIZEOF_ARG] = {
801 "git", "log", "--no-color", "--pretty=raw", "--parents",
802 "--topo-order", NULL
803 };
804 int i, j = 6;
806 if (!isatty(STDIN_FILENO))
807 return REQ_VIEW_PAGER;
809 if (argc <= 1)
810 return REQ_VIEW_MAIN;
812 subcommand = argv[1];
813 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
814 if (!strcmp(subcommand, "-S"))
815 warn("`-S' has been deprecated; use `tig status' instead");
816 if (argc > 2)
817 warn("ignoring arguments after `%s'", subcommand);
818 return REQ_VIEW_STATUS;
820 } else if (!strcmp(subcommand, "blame")) {
821 if (argc <= 2 || argc > 4)
822 die("invalid number of options to blame\n\n%s", usage);
824 i = 2;
825 if (argc == 4) {
826 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
827 i++;
828 }
830 string_ncopy(opt_file, argv[i], strlen(argv[i]));
831 return REQ_VIEW_BLAME;
833 } else if (!strcmp(subcommand, "show")) {
834 request = REQ_VIEW_DIFF;
836 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
837 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
838 warn("`tig %s' has been deprecated", subcommand);
840 } else {
841 subcommand = NULL;
842 }
844 if (subcommand) {
845 custom_argv[1] = subcommand;
846 j = 2;
847 }
849 for (i = 1 + !!subcommand; i < argc; i++) {
850 const char *opt = argv[i];
852 if (seen_dashdash || !strcmp(opt, "--")) {
853 seen_dashdash = TRUE;
855 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
856 printf("tig version %s\n", TIG_VERSION);
857 return REQ_NONE;
859 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
860 printf("%s\n", usage);
861 return REQ_NONE;
862 }
864 custom_argv[j++] = opt;
865 if (j >= ARRAY_SIZE(custom_argv))
866 die("command too long");
867 }
869 custom_argv[j] = NULL;
870 *run_argv = custom_argv;
872 return request;
873 }
876 /*
877 * Line-oriented content detection.
878 */
880 #define LINE_INFO \
881 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
882 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
883 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
884 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
885 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
886 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
887 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
888 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
889 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
890 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
891 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
892 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
893 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
894 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
895 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
896 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
897 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
898 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
899 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
900 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
901 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
902 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
903 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
904 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
905 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
906 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
907 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
908 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
909 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
910 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
911 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
912 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
913 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
914 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
915 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
916 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
917 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
918 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
919 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
920 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
921 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
922 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
923 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
924 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
925 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
926 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
927 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
928 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
929 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
930 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
931 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
932 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
933 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
934 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
936 enum line_type {
937 #define LINE(type, line, fg, bg, attr) \
938 LINE_##type
939 LINE_INFO,
940 LINE_NONE
941 #undef LINE
942 };
944 struct line_info {
945 const char *name; /* Option name. */
946 int namelen; /* Size of option name. */
947 const char *line; /* The start of line to match. */
948 int linelen; /* Size of string to match. */
949 int fg, bg, attr; /* Color and text attributes for the lines. */
950 };
952 static struct line_info line_info[] = {
953 #define LINE(type, line, fg, bg, attr) \
954 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
955 LINE_INFO
956 #undef LINE
957 };
959 static enum line_type
960 get_line_type(const char *line)
961 {
962 int linelen = strlen(line);
963 enum line_type type;
965 for (type = 0; type < ARRAY_SIZE(line_info); type++)
966 /* Case insensitive search matches Signed-off-by lines better. */
967 if (linelen >= line_info[type].linelen &&
968 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
969 return type;
971 return LINE_DEFAULT;
972 }
974 static inline int
975 get_line_attr(enum line_type type)
976 {
977 assert(type < ARRAY_SIZE(line_info));
978 return COLOR_PAIR(type) | line_info[type].attr;
979 }
981 static struct line_info *
982 get_line_info(const char *name)
983 {
984 size_t namelen = strlen(name);
985 enum line_type type;
987 for (type = 0; type < ARRAY_SIZE(line_info); type++)
988 if (namelen == line_info[type].namelen &&
989 !string_enum_compare(line_info[type].name, name, namelen))
990 return &line_info[type];
992 return NULL;
993 }
995 static void
996 init_colors(void)
997 {
998 int default_bg = line_info[LINE_DEFAULT].bg;
999 int default_fg = line_info[LINE_DEFAULT].fg;
1000 enum line_type type;
1002 start_color();
1004 if (assume_default_colors(default_fg, default_bg) == ERR) {
1005 default_bg = COLOR_BLACK;
1006 default_fg = COLOR_WHITE;
1007 }
1009 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1010 struct line_info *info = &line_info[type];
1011 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1012 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1014 init_pair(type, fg, bg);
1015 }
1016 }
1018 struct line {
1019 enum line_type type;
1021 /* State flags */
1022 unsigned int selected:1;
1023 unsigned int dirty:1;
1024 unsigned int cleareol:1;
1026 void *data; /* User data */
1027 };
1030 /*
1031 * Keys
1032 */
1034 struct keybinding {
1035 int alias;
1036 enum request request;
1037 };
1039 static struct keybinding default_keybindings[] = {
1040 /* View switching */
1041 { 'm', REQ_VIEW_MAIN },
1042 { 'd', REQ_VIEW_DIFF },
1043 { 'l', REQ_VIEW_LOG },
1044 { 't', REQ_VIEW_TREE },
1045 { 'f', REQ_VIEW_BLOB },
1046 { 'B', REQ_VIEW_BLAME },
1047 { 'p', REQ_VIEW_PAGER },
1048 { 'h', REQ_VIEW_HELP },
1049 { 'S', REQ_VIEW_STATUS },
1050 { 'c', REQ_VIEW_STAGE },
1052 /* View manipulation */
1053 { 'q', REQ_VIEW_CLOSE },
1054 { KEY_TAB, REQ_VIEW_NEXT },
1055 { KEY_RETURN, REQ_ENTER },
1056 { KEY_UP, REQ_PREVIOUS },
1057 { KEY_DOWN, REQ_NEXT },
1058 { 'R', REQ_REFRESH },
1059 { KEY_F(5), REQ_REFRESH },
1060 { 'O', REQ_MAXIMIZE },
1062 /* Cursor navigation */
1063 { 'k', REQ_MOVE_UP },
1064 { 'j', REQ_MOVE_DOWN },
1065 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1066 { KEY_END, REQ_MOVE_LAST_LINE },
1067 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1068 { ' ', REQ_MOVE_PAGE_DOWN },
1069 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1070 { 'b', REQ_MOVE_PAGE_UP },
1071 { '-', REQ_MOVE_PAGE_UP },
1073 /* Scrolling */
1074 { KEY_IC, REQ_SCROLL_LINE_UP },
1075 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1076 { 'w', REQ_SCROLL_PAGE_UP },
1077 { 's', REQ_SCROLL_PAGE_DOWN },
1079 /* Searching */
1080 { '/', REQ_SEARCH },
1081 { '?', REQ_SEARCH_BACK },
1082 { 'n', REQ_FIND_NEXT },
1083 { 'N', REQ_FIND_PREV },
1085 /* Misc */
1086 { 'Q', REQ_QUIT },
1087 { 'z', REQ_STOP_LOADING },
1088 { 'v', REQ_SHOW_VERSION },
1089 { 'r', REQ_SCREEN_REDRAW },
1090 { '.', REQ_TOGGLE_LINENO },
1091 { 'D', REQ_TOGGLE_DATE },
1092 { 'A', REQ_TOGGLE_AUTHOR },
1093 { 'g', REQ_TOGGLE_REV_GRAPH },
1094 { 'F', REQ_TOGGLE_REFS },
1095 { ':', REQ_PROMPT },
1096 { 'u', REQ_STATUS_UPDATE },
1097 { '!', REQ_STATUS_REVERT },
1098 { 'M', REQ_STATUS_MERGE },
1099 { '@', REQ_STAGE_NEXT },
1100 { ',', REQ_TREE_PARENT },
1101 { 'e', REQ_EDIT },
1103 /* Using the ncurses SIGWINCH handler. */
1104 { KEY_RESIZE, REQ_SCREEN_RESIZE },
1105 };
1107 #define KEYMAP_INFO \
1108 KEYMAP_(GENERIC), \
1109 KEYMAP_(MAIN), \
1110 KEYMAP_(DIFF), \
1111 KEYMAP_(LOG), \
1112 KEYMAP_(TREE), \
1113 KEYMAP_(BLOB), \
1114 KEYMAP_(BLAME), \
1115 KEYMAP_(PAGER), \
1116 KEYMAP_(HELP), \
1117 KEYMAP_(STATUS), \
1118 KEYMAP_(STAGE)
1120 enum keymap {
1121 #define KEYMAP_(name) KEYMAP_##name
1122 KEYMAP_INFO
1123 #undef KEYMAP_
1124 };
1126 static struct int_map keymap_table[] = {
1127 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
1128 KEYMAP_INFO
1129 #undef KEYMAP_
1130 };
1132 #define set_keymap(map, name) \
1133 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
1135 struct keybinding_table {
1136 struct keybinding *data;
1137 size_t size;
1138 };
1140 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1142 static void
1143 add_keybinding(enum keymap keymap, enum request request, int key)
1144 {
1145 struct keybinding_table *table = &keybindings[keymap];
1147 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1148 if (!table->data)
1149 die("Failed to allocate keybinding");
1150 table->data[table->size].alias = key;
1151 table->data[table->size++].request = request;
1152 }
1154 /* Looks for a key binding first in the given map, then in the generic map, and
1155 * lastly in the default keybindings. */
1156 static enum request
1157 get_keybinding(enum keymap keymap, int key)
1158 {
1159 size_t i;
1161 for (i = 0; i < keybindings[keymap].size; i++)
1162 if (keybindings[keymap].data[i].alias == key)
1163 return keybindings[keymap].data[i].request;
1165 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1166 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1167 return keybindings[KEYMAP_GENERIC].data[i].request;
1169 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1170 if (default_keybindings[i].alias == key)
1171 return default_keybindings[i].request;
1173 return (enum request) key;
1174 }
1177 struct key {
1178 const char *name;
1179 int value;
1180 };
1182 static struct key key_table[] = {
1183 { "Enter", KEY_RETURN },
1184 { "Space", ' ' },
1185 { "Backspace", KEY_BACKSPACE },
1186 { "Tab", KEY_TAB },
1187 { "Escape", KEY_ESC },
1188 { "Left", KEY_LEFT },
1189 { "Right", KEY_RIGHT },
1190 { "Up", KEY_UP },
1191 { "Down", KEY_DOWN },
1192 { "Insert", KEY_IC },
1193 { "Delete", KEY_DC },
1194 { "Hash", '#' },
1195 { "Home", KEY_HOME },
1196 { "End", KEY_END },
1197 { "PageUp", KEY_PPAGE },
1198 { "PageDown", KEY_NPAGE },
1199 { "F1", KEY_F(1) },
1200 { "F2", KEY_F(2) },
1201 { "F3", KEY_F(3) },
1202 { "F4", KEY_F(4) },
1203 { "F5", KEY_F(5) },
1204 { "F6", KEY_F(6) },
1205 { "F7", KEY_F(7) },
1206 { "F8", KEY_F(8) },
1207 { "F9", KEY_F(9) },
1208 { "F10", KEY_F(10) },
1209 { "F11", KEY_F(11) },
1210 { "F12", KEY_F(12) },
1211 };
1213 static int
1214 get_key_value(const char *name)
1215 {
1216 int i;
1218 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1219 if (!strcasecmp(key_table[i].name, name))
1220 return key_table[i].value;
1222 if (strlen(name) == 1 && isprint(*name))
1223 return (int) *name;
1225 return ERR;
1226 }
1228 static const char *
1229 get_key_name(int key_value)
1230 {
1231 static char key_char[] = "'X'";
1232 const char *seq = NULL;
1233 int key;
1235 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1236 if (key_table[key].value == key_value)
1237 seq = key_table[key].name;
1239 if (seq == NULL &&
1240 key_value < 127 &&
1241 isprint(key_value)) {
1242 key_char[1] = (char) key_value;
1243 seq = key_char;
1244 }
1246 return seq ? seq : "(no key)";
1247 }
1249 static const char *
1250 get_key(enum request request)
1251 {
1252 static char buf[BUFSIZ];
1253 size_t pos = 0;
1254 char *sep = "";
1255 int i;
1257 buf[pos] = 0;
1259 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1260 struct keybinding *keybinding = &default_keybindings[i];
1262 if (keybinding->request != request)
1263 continue;
1265 if (!string_format_from(buf, &pos, "%s%s", sep,
1266 get_key_name(keybinding->alias)))
1267 return "Too many keybindings!";
1268 sep = ", ";
1269 }
1271 return buf;
1272 }
1274 struct run_request {
1275 enum keymap keymap;
1276 int key;
1277 const char *argv[SIZEOF_ARG];
1278 };
1280 static struct run_request *run_request;
1281 static size_t run_requests;
1283 static enum request
1284 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1285 {
1286 struct run_request *req;
1288 if (argc >= ARRAY_SIZE(req->argv) - 1)
1289 return REQ_NONE;
1291 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
1292 if (!req)
1293 return REQ_NONE;
1295 run_request = req;
1296 req = &run_request[run_requests];
1297 req->keymap = keymap;
1298 req->key = key;
1299 req->argv[0] = NULL;
1301 if (!format_argv(req->argv, argv, FORMAT_NONE))
1302 return REQ_NONE;
1304 return REQ_NONE + ++run_requests;
1305 }
1307 static struct run_request *
1308 get_run_request(enum request request)
1309 {
1310 if (request <= REQ_NONE)
1311 return NULL;
1312 return &run_request[request - REQ_NONE - 1];
1313 }
1315 static void
1316 add_builtin_run_requests(void)
1317 {
1318 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1319 const char *gc[] = { "git", "gc", NULL };
1320 struct {
1321 enum keymap keymap;
1322 int key;
1323 int argc;
1324 const char **argv;
1325 } reqs[] = {
1326 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1327 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1328 };
1329 int i;
1331 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1332 enum request req;
1334 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1335 if (req != REQ_NONE)
1336 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1337 }
1338 }
1340 /*
1341 * User config file handling.
1342 */
1344 static struct int_map color_map[] = {
1345 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1346 COLOR_MAP(DEFAULT),
1347 COLOR_MAP(BLACK),
1348 COLOR_MAP(BLUE),
1349 COLOR_MAP(CYAN),
1350 COLOR_MAP(GREEN),
1351 COLOR_MAP(MAGENTA),
1352 COLOR_MAP(RED),
1353 COLOR_MAP(WHITE),
1354 COLOR_MAP(YELLOW),
1355 };
1357 #define set_color(color, name) \
1358 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1360 static struct int_map attr_map[] = {
1361 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1362 ATTR_MAP(NORMAL),
1363 ATTR_MAP(BLINK),
1364 ATTR_MAP(BOLD),
1365 ATTR_MAP(DIM),
1366 ATTR_MAP(REVERSE),
1367 ATTR_MAP(STANDOUT),
1368 ATTR_MAP(UNDERLINE),
1369 };
1371 #define set_attribute(attr, name) \
1372 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1374 static int config_lineno;
1375 static bool config_errors;
1376 static const char *config_msg;
1378 /* Wants: object fgcolor bgcolor [attr] */
1379 static int
1380 option_color_command(int argc, const char *argv[])
1381 {
1382 struct line_info *info;
1384 if (argc != 3 && argc != 4) {
1385 config_msg = "Wrong number of arguments given to color command";
1386 return ERR;
1387 }
1389 info = get_line_info(argv[0]);
1390 if (!info) {
1391 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1392 info = get_line_info("delimiter");
1394 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1395 info = get_line_info("date");
1397 } else {
1398 config_msg = "Unknown color name";
1399 return ERR;
1400 }
1401 }
1403 if (set_color(&info->fg, argv[1]) == ERR ||
1404 set_color(&info->bg, argv[2]) == ERR) {
1405 config_msg = "Unknown color";
1406 return ERR;
1407 }
1409 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1410 config_msg = "Unknown attribute";
1411 return ERR;
1412 }
1414 return OK;
1415 }
1417 static bool parse_bool(const char *s)
1418 {
1419 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1420 !strcmp(s, "yes")) ? TRUE : FALSE;
1421 }
1423 static int
1424 parse_int(const char *s, int default_value, int min, int max)
1425 {
1426 int value = atoi(s);
1428 return (value < min || value > max) ? default_value : value;
1429 }
1431 /* Wants: name = value */
1432 static int
1433 option_set_command(int argc, const char *argv[])
1434 {
1435 if (argc != 3) {
1436 config_msg = "Wrong number of arguments given to set command";
1437 return ERR;
1438 }
1440 if (strcmp(argv[1], "=")) {
1441 config_msg = "No value assigned";
1442 return ERR;
1443 }
1445 if (!strcmp(argv[0], "show-author")) {
1446 opt_author = parse_bool(argv[2]);
1447 return OK;
1448 }
1450 if (!strcmp(argv[0], "show-date")) {
1451 opt_date = parse_bool(argv[2]);
1452 return OK;
1453 }
1455 if (!strcmp(argv[0], "show-rev-graph")) {
1456 opt_rev_graph = parse_bool(argv[2]);
1457 return OK;
1458 }
1460 if (!strcmp(argv[0], "show-refs")) {
1461 opt_show_refs = parse_bool(argv[2]);
1462 return OK;
1463 }
1465 if (!strcmp(argv[0], "show-line-numbers")) {
1466 opt_line_number = parse_bool(argv[2]);
1467 return OK;
1468 }
1470 if (!strcmp(argv[0], "line-graphics")) {
1471 opt_line_graphics = parse_bool(argv[2]);
1472 return OK;
1473 }
1475 if (!strcmp(argv[0], "line-number-interval")) {
1476 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1477 return OK;
1478 }
1480 if (!strcmp(argv[0], "author-width")) {
1481 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1482 return OK;
1483 }
1485 if (!strcmp(argv[0], "tab-size")) {
1486 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1487 return OK;
1488 }
1490 if (!strcmp(argv[0], "commit-encoding")) {
1491 const char *arg = argv[2];
1492 int arglen = strlen(arg);
1494 switch (arg[0]) {
1495 case '"':
1496 case '\'':
1497 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1498 config_msg = "Unmatched quotation";
1499 return ERR;
1500 }
1501 arg += 1; arglen -= 2;
1502 default:
1503 string_ncopy(opt_encoding, arg, strlen(arg));
1504 return OK;
1505 }
1506 }
1508 config_msg = "Unknown variable name";
1509 return ERR;
1510 }
1512 /* Wants: mode request key */
1513 static int
1514 option_bind_command(int argc, const char *argv[])
1515 {
1516 enum request request;
1517 int keymap;
1518 int key;
1520 if (argc < 3) {
1521 config_msg = "Wrong number of arguments given to bind command";
1522 return ERR;
1523 }
1525 if (set_keymap(&keymap, argv[0]) == ERR) {
1526 config_msg = "Unknown key map";
1527 return ERR;
1528 }
1530 key = get_key_value(argv[1]);
1531 if (key == ERR) {
1532 config_msg = "Unknown key";
1533 return ERR;
1534 }
1536 request = get_request(argv[2]);
1537 if (request == REQ_NONE) {
1538 const char *obsolete[] = { "cherry-pick" };
1539 size_t namelen = strlen(argv[2]);
1540 int i;
1542 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1543 if (namelen == strlen(obsolete[i]) &&
1544 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1545 config_msg = "Obsolete request name";
1546 return ERR;
1547 }
1548 }
1549 }
1550 if (request == REQ_NONE && *argv[2]++ == '!')
1551 request = add_run_request(keymap, key, argc - 2, argv + 2);
1552 if (request == REQ_NONE) {
1553 config_msg = "Unknown request name";
1554 return ERR;
1555 }
1557 add_keybinding(keymap, request, key);
1559 return OK;
1560 }
1562 static int
1563 set_option(const char *opt, char *value)
1564 {
1565 const char *argv[SIZEOF_ARG];
1566 int argc = 0;
1568 if (!argv_from_string(argv, &argc, value)) {
1569 config_msg = "Too many option arguments";
1570 return ERR;
1571 }
1573 if (!strcmp(opt, "color"))
1574 return option_color_command(argc, argv);
1576 if (!strcmp(opt, "set"))
1577 return option_set_command(argc, argv);
1579 if (!strcmp(opt, "bind"))
1580 return option_bind_command(argc, argv);
1582 config_msg = "Unknown option command";
1583 return ERR;
1584 }
1586 static int
1587 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1588 {
1589 int status = OK;
1591 config_lineno++;
1592 config_msg = "Internal error";
1594 /* Check for comment markers, since read_properties() will
1595 * only ensure opt and value are split at first " \t". */
1596 optlen = strcspn(opt, "#");
1597 if (optlen == 0)
1598 return OK;
1600 if (opt[optlen] != 0) {
1601 config_msg = "No option value";
1602 status = ERR;
1604 } else {
1605 /* Look for comment endings in the value. */
1606 size_t len = strcspn(value, "#");
1608 if (len < valuelen) {
1609 valuelen = len;
1610 value[valuelen] = 0;
1611 }
1613 status = set_option(opt, value);
1614 }
1616 if (status == ERR) {
1617 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1618 config_lineno, (int) optlen, opt, config_msg);
1619 config_errors = TRUE;
1620 }
1622 /* Always keep going if errors are encountered. */
1623 return OK;
1624 }
1626 static void
1627 load_option_file(const char *path)
1628 {
1629 struct io io = {};
1631 /* It's ok that the file doesn't exist. */
1632 if (!io_open(&io, path))
1633 return;
1635 config_lineno = 0;
1636 config_errors = FALSE;
1638 if (read_properties(&io, " \t", read_option) == ERR ||
1639 config_errors == TRUE)
1640 fprintf(stderr, "Errors while loading %s.\n", path);
1641 }
1643 static int
1644 load_options(void)
1645 {
1646 const char *home = getenv("HOME");
1647 const char *tigrc_user = getenv("TIGRC_USER");
1648 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1649 char buf[SIZEOF_STR];
1651 add_builtin_run_requests();
1653 if (!tigrc_system) {
1654 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1655 return ERR;
1656 tigrc_system = buf;
1657 }
1658 load_option_file(tigrc_system);
1660 if (!tigrc_user) {
1661 if (!home || !string_format(buf, "%s/.tigrc", home))
1662 return ERR;
1663 tigrc_user = buf;
1664 }
1665 load_option_file(tigrc_user);
1667 return OK;
1668 }
1671 /*
1672 * The viewer
1673 */
1675 struct view;
1676 struct view_ops;
1678 /* The display array of active views and the index of the current view. */
1679 static struct view *display[2];
1680 static unsigned int current_view;
1682 /* Reading from the prompt? */
1683 static bool input_mode = FALSE;
1685 #define foreach_displayed_view(view, i) \
1686 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1688 #define displayed_views() (display[1] != NULL ? 2 : 1)
1690 /* Current head and commit ID */
1691 static char ref_blob[SIZEOF_REF] = "";
1692 static char ref_commit[SIZEOF_REF] = "HEAD";
1693 static char ref_head[SIZEOF_REF] = "HEAD";
1695 struct view {
1696 const char *name; /* View name */
1697 const char *cmd_env; /* Command line set via environment */
1698 const char *id; /* Points to either of ref_{head,commit,blob} */
1700 struct view_ops *ops; /* View operations */
1702 enum keymap keymap; /* What keymap does this view have */
1703 bool git_dir; /* Whether the view requires a git directory. */
1705 char ref[SIZEOF_REF]; /* Hovered commit reference */
1706 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1708 int height, width; /* The width and height of the main window */
1709 WINDOW *win; /* The main window */
1710 WINDOW *title; /* The title window living below the main window */
1712 /* Navigation */
1713 unsigned long offset; /* Offset of the window top */
1714 unsigned long lineno; /* Current line number */
1716 /* Searching */
1717 char grep[SIZEOF_STR]; /* Search string */
1718 regex_t *regex; /* Pre-compiled regex */
1720 /* If non-NULL, points to the view that opened this view. If this view
1721 * is closed tig will switch back to the parent view. */
1722 struct view *parent;
1724 /* Buffering */
1725 size_t lines; /* Total number of lines */
1726 struct line *line; /* Line index */
1727 size_t line_alloc; /* Total number of allocated lines */
1728 unsigned int digits; /* Number of digits in the lines member. */
1730 /* Drawing */
1731 struct line *curline; /* Line currently being drawn. */
1732 enum line_type curtype; /* Attribute currently used for drawing. */
1733 unsigned long col; /* Column when drawing. */
1735 /* Loading */
1736 struct io io;
1737 struct io *pipe;
1738 time_t start_time;
1739 time_t update_secs;
1740 };
1742 struct view_ops {
1743 /* What type of content being displayed. Used in the title bar. */
1744 const char *type;
1745 /* Default command arguments. */
1746 const char **argv;
1747 /* Open and reads in all view content. */
1748 bool (*open)(struct view *view);
1749 /* Read one line; updates view->line. */
1750 bool (*read)(struct view *view, char *data);
1751 /* Draw one line; @lineno must be < view->height. */
1752 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1753 /* Depending on view handle a special requests. */
1754 enum request (*request)(struct view *view, enum request request, struct line *line);
1755 /* Search for regex in a line. */
1756 bool (*grep)(struct view *view, struct line *line);
1757 /* Select line */
1758 void (*select)(struct view *view, struct line *line);
1759 };
1761 static struct view_ops blame_ops;
1762 static struct view_ops blob_ops;
1763 static struct view_ops diff_ops;
1764 static struct view_ops help_ops;
1765 static struct view_ops log_ops;
1766 static struct view_ops main_ops;
1767 static struct view_ops pager_ops;
1768 static struct view_ops stage_ops;
1769 static struct view_ops status_ops;
1770 static struct view_ops tree_ops;
1772 #define VIEW_STR(name, env, ref, ops, map, git) \
1773 { name, #env, ref, ops, map, git }
1775 #define VIEW_(id, name, ops, git, ref) \
1776 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1779 static struct view views[] = {
1780 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1781 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1782 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1783 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1784 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1785 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1786 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1787 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1788 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1789 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1790 };
1792 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1793 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1795 #define foreach_view(view, i) \
1796 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1798 #define view_is_displayed(view) \
1799 (view == display[0] || view == display[1])
1802 enum line_graphic {
1803 LINE_GRAPHIC_VLINE
1804 };
1806 static int line_graphics[] = {
1807 /* LINE_GRAPHIC_VLINE: */ '|'
1808 };
1810 static inline void
1811 set_view_attr(struct view *view, enum line_type type)
1812 {
1813 if (!view->curline->selected && view->curtype != type) {
1814 wattrset(view->win, get_line_attr(type));
1815 wchgat(view->win, -1, 0, type, NULL);
1816 view->curtype = type;
1817 }
1818 }
1820 static int
1821 draw_chars(struct view *view, enum line_type type, const char *string,
1822 int max_len, bool use_tilde)
1823 {
1824 int len = 0;
1825 int col = 0;
1826 int trimmed = FALSE;
1828 if (max_len <= 0)
1829 return 0;
1831 if (opt_utf8) {
1832 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1833 } else {
1834 col = len = strlen(string);
1835 if (len > max_len) {
1836 if (use_tilde) {
1837 max_len -= 1;
1838 }
1839 col = len = max_len;
1840 trimmed = TRUE;
1841 }
1842 }
1844 set_view_attr(view, type);
1845 waddnstr(view->win, string, len);
1846 if (trimmed && use_tilde) {
1847 set_view_attr(view, LINE_DELIMITER);
1848 waddch(view->win, '~');
1849 col++;
1850 }
1852 return col;
1853 }
1855 static int
1856 draw_space(struct view *view, enum line_type type, int max, int spaces)
1857 {
1858 static char space[] = " ";
1859 int col = 0;
1861 spaces = MIN(max, spaces);
1863 while (spaces > 0) {
1864 int len = MIN(spaces, sizeof(space) - 1);
1866 col += draw_chars(view, type, space, spaces, FALSE);
1867 spaces -= len;
1868 }
1870 return col;
1871 }
1873 static bool
1874 draw_lineno(struct view *view, unsigned int lineno)
1875 {
1876 char number[10];
1877 int digits3 = view->digits < 3 ? 3 : view->digits;
1878 int max_number = MIN(digits3, STRING_SIZE(number));
1879 int max = view->width - view->col;
1880 int col;
1882 if (max < max_number)
1883 max_number = max;
1885 lineno += view->offset + 1;
1886 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1887 static char fmt[] = "%1ld";
1889 if (view->digits <= 9)
1890 fmt[1] = '0' + digits3;
1892 if (!string_format(number, fmt, lineno))
1893 number[0] = 0;
1894 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1895 } else {
1896 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1897 }
1899 if (col < max) {
1900 set_view_attr(view, LINE_DEFAULT);
1901 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1902 col++;
1903 }
1905 if (col < max)
1906 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1907 view->col += col;
1909 return view->width - view->col <= 0;
1910 }
1912 static bool
1913 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1914 {
1915 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1916 return view->width - view->col <= 0;
1917 }
1919 static bool
1920 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1921 {
1922 int max = view->width - view->col;
1923 int i;
1925 if (max < size)
1926 size = max;
1928 set_view_attr(view, type);
1929 /* Using waddch() instead of waddnstr() ensures that
1930 * they'll be rendered correctly for the cursor line. */
1931 for (i = 0; i < size; i++)
1932 waddch(view->win, graphic[i]);
1934 view->col += size;
1935 if (size < max) {
1936 waddch(view->win, ' ');
1937 view->col++;
1938 }
1940 return view->width - view->col <= 0;
1941 }
1943 static bool
1944 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1945 {
1946 int max = MIN(view->width - view->col, len);
1947 int col;
1949 if (text)
1950 col = draw_chars(view, type, text, max - 1, trim);
1951 else
1952 col = draw_space(view, type, max - 1, max - 1);
1954 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1955 return view->width - view->col <= 0;
1956 }
1958 static bool
1959 draw_date(struct view *view, struct tm *time)
1960 {
1961 char buf[DATE_COLS];
1962 char *date;
1963 int timelen = 0;
1965 if (time)
1966 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1967 date = timelen ? buf : NULL;
1969 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1970 }
1972 static bool
1973 draw_view_line(struct view *view, unsigned int lineno)
1974 {
1975 struct line *line;
1976 bool selected = (view->offset + lineno == view->lineno);
1977 bool draw_ok;
1979 assert(view_is_displayed(view));
1981 if (view->offset + lineno >= view->lines)
1982 return FALSE;
1984 line = &view->line[view->offset + lineno];
1986 wmove(view->win, lineno, 0);
1987 if (line->cleareol)
1988 wclrtoeol(view->win);
1989 view->col = 0;
1990 view->curline = line;
1991 view->curtype = LINE_NONE;
1992 line->selected = FALSE;
1993 line->dirty = line->cleareol = 0;
1995 if (selected) {
1996 set_view_attr(view, LINE_CURSOR);
1997 line->selected = TRUE;
1998 view->ops->select(view, line);
1999 }
2001 scrollok(view->win, FALSE);
2002 draw_ok = view->ops->draw(view, line, lineno);
2003 scrollok(view->win, TRUE);
2005 return draw_ok;
2006 }
2008 static void
2009 redraw_view_dirty(struct view *view)
2010 {
2011 bool dirty = FALSE;
2012 int lineno;
2014 for (lineno = 0; lineno < view->height; lineno++) {
2015 if (view->offset + lineno >= view->lines)
2016 break;
2017 if (!view->line[view->offset + lineno].dirty)
2018 continue;
2019 dirty = TRUE;
2020 if (!draw_view_line(view, lineno))
2021 break;
2022 }
2024 if (!dirty)
2025 return;
2026 redrawwin(view->win);
2027 if (input_mode)
2028 wnoutrefresh(view->win);
2029 else
2030 wrefresh(view->win);
2031 }
2033 static void
2034 redraw_view_from(struct view *view, int lineno)
2035 {
2036 assert(0 <= lineno && lineno < view->height);
2038 for (; lineno < view->height; lineno++) {
2039 if (!draw_view_line(view, lineno))
2040 break;
2041 }
2043 redrawwin(view->win);
2044 if (input_mode)
2045 wnoutrefresh(view->win);
2046 else
2047 wrefresh(view->win);
2048 }
2050 static void
2051 redraw_view(struct view *view)
2052 {
2053 wclear(view->win);
2054 redraw_view_from(view, 0);
2055 }
2058 static void
2059 update_view_title(struct view *view)
2060 {
2061 char buf[SIZEOF_STR];
2062 char state[SIZEOF_STR];
2063 size_t bufpos = 0, statelen = 0;
2065 assert(view_is_displayed(view));
2067 if (view != VIEW(REQ_VIEW_STATUS) && view->lines) {
2068 unsigned int view_lines = view->offset + view->height;
2069 unsigned int lines = view->lines
2070 ? MIN(view_lines, view->lines) * 100 / view->lines
2071 : 0;
2073 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2074 view->ops->type,
2075 view->lineno + 1,
2076 view->lines,
2077 lines);
2079 }
2081 if (view->pipe) {
2082 time_t secs = time(NULL) - view->start_time;
2084 /* Three git seconds are a long time ... */
2085 if (secs > 2)
2086 string_format_from(state, &statelen, " loading %lds", secs);
2087 }
2089 string_format_from(buf, &bufpos, "[%s]", view->name);
2090 if (*view->ref && bufpos < view->width) {
2091 size_t refsize = strlen(view->ref);
2092 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2094 if (minsize < view->width)
2095 refsize = view->width - minsize + 7;
2096 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2097 }
2099 if (statelen && bufpos < view->width) {
2100 string_format_from(buf, &bufpos, "%s", state);
2101 }
2103 if (view == display[current_view])
2104 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2105 else
2106 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2108 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2109 wclrtoeol(view->title);
2110 wmove(view->title, 0, view->width - 1);
2112 if (input_mode)
2113 wnoutrefresh(view->title);
2114 else
2115 wrefresh(view->title);
2116 }
2118 static void
2119 resize_display(void)
2120 {
2121 int offset, i;
2122 struct view *base = display[0];
2123 struct view *view = display[1] ? display[1] : display[0];
2125 /* Setup window dimensions */
2127 getmaxyx(stdscr, base->height, base->width);
2129 /* Make room for the status window. */
2130 base->height -= 1;
2132 if (view != base) {
2133 /* Horizontal split. */
2134 view->width = base->width;
2135 view->height = SCALE_SPLIT_VIEW(base->height);
2136 base->height -= view->height;
2138 /* Make room for the title bar. */
2139 view->height -= 1;
2140 }
2142 /* Make room for the title bar. */
2143 base->height -= 1;
2145 offset = 0;
2147 foreach_displayed_view (view, i) {
2148 if (!view->win) {
2149 view->win = newwin(view->height, 0, offset, 0);
2150 if (!view->win)
2151 die("Failed to create %s view", view->name);
2153 scrollok(view->win, TRUE);
2155 view->title = newwin(1, 0, offset + view->height, 0);
2156 if (!view->title)
2157 die("Failed to create title window");
2159 } else {
2160 wresize(view->win, view->height, view->width);
2161 mvwin(view->win, offset, 0);
2162 mvwin(view->title, offset + view->height, 0);
2163 }
2165 offset += view->height + 1;
2166 }
2167 }
2169 static void
2170 redraw_display(void)
2171 {
2172 struct view *view;
2173 int i;
2175 foreach_displayed_view (view, i) {
2176 redraw_view(view);
2177 update_view_title(view);
2178 }
2179 }
2181 static void
2182 update_display_cursor(struct view *view)
2183 {
2184 /* Move the cursor to the right-most column of the cursor line.
2185 *
2186 * XXX: This could turn out to be a bit expensive, but it ensures that
2187 * the cursor does not jump around. */
2188 if (view->lines) {
2189 wmove(view->win, view->lineno - view->offset, view->width - 1);
2190 wrefresh(view->win);
2191 }
2192 }
2194 /*
2195 * Navigation
2196 */
2198 /* Scrolling backend */
2199 static void
2200 do_scroll_view(struct view *view, int lines)
2201 {
2202 bool redraw_current_line = FALSE;
2204 /* The rendering expects the new offset. */
2205 view->offset += lines;
2207 assert(0 <= view->offset && view->offset < view->lines);
2208 assert(lines);
2210 /* Move current line into the view. */
2211 if (view->lineno < view->offset) {
2212 view->lineno = view->offset;
2213 redraw_current_line = TRUE;
2214 } else if (view->lineno >= view->offset + view->height) {
2215 view->lineno = view->offset + view->height - 1;
2216 redraw_current_line = TRUE;
2217 }
2219 assert(view->offset <= view->lineno && view->lineno < view->lines);
2221 /* Redraw the whole screen if scrolling is pointless. */
2222 if (view->height < ABS(lines)) {
2223 redraw_view(view);
2225 } else {
2226 int line = lines > 0 ? view->height - lines : 0;
2227 int end = line + ABS(lines);
2229 wscrl(view->win, lines);
2231 for (; line < end; line++) {
2232 if (!draw_view_line(view, line))
2233 break;
2234 }
2236 if (redraw_current_line)
2237 draw_view_line(view, view->lineno - view->offset);
2238 }
2240 redrawwin(view->win);
2241 wrefresh(view->win);
2242 report("");
2243 }
2245 /* Scroll frontend */
2246 static void
2247 scroll_view(struct view *view, enum request request)
2248 {
2249 int lines = 1;
2251 assert(view_is_displayed(view));
2253 switch (request) {
2254 case REQ_SCROLL_PAGE_DOWN:
2255 lines = view->height;
2256 case REQ_SCROLL_LINE_DOWN:
2257 if (view->offset + lines > view->lines)
2258 lines = view->lines - view->offset;
2260 if (lines == 0 || view->offset + view->height >= view->lines) {
2261 report("Cannot scroll beyond the last line");
2262 return;
2263 }
2264 break;
2266 case REQ_SCROLL_PAGE_UP:
2267 lines = view->height;
2268 case REQ_SCROLL_LINE_UP:
2269 if (lines > view->offset)
2270 lines = view->offset;
2272 if (lines == 0) {
2273 report("Cannot scroll beyond the first line");
2274 return;
2275 }
2277 lines = -lines;
2278 break;
2280 default:
2281 die("request %d not handled in switch", request);
2282 }
2284 do_scroll_view(view, lines);
2285 }
2287 /* Cursor moving */
2288 static void
2289 move_view(struct view *view, enum request request)
2290 {
2291 int scroll_steps = 0;
2292 int steps;
2294 switch (request) {
2295 case REQ_MOVE_FIRST_LINE:
2296 steps = -view->lineno;
2297 break;
2299 case REQ_MOVE_LAST_LINE:
2300 steps = view->lines - view->lineno - 1;
2301 break;
2303 case REQ_MOVE_PAGE_UP:
2304 steps = view->height > view->lineno
2305 ? -view->lineno : -view->height;
2306 break;
2308 case REQ_MOVE_PAGE_DOWN:
2309 steps = view->lineno + view->height >= view->lines
2310 ? view->lines - view->lineno - 1 : view->height;
2311 break;
2313 case REQ_MOVE_UP:
2314 steps = -1;
2315 break;
2317 case REQ_MOVE_DOWN:
2318 steps = 1;
2319 break;
2321 default:
2322 die("request %d not handled in switch", request);
2323 }
2325 if (steps <= 0 && view->lineno == 0) {
2326 report("Cannot move beyond the first line");
2327 return;
2329 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2330 report("Cannot move beyond the last line");
2331 return;
2332 }
2334 /* Move the current line */
2335 view->lineno += steps;
2336 assert(0 <= view->lineno && view->lineno < view->lines);
2338 /* Check whether the view needs to be scrolled */
2339 if (view->lineno < view->offset ||
2340 view->lineno >= view->offset + view->height) {
2341 scroll_steps = steps;
2342 if (steps < 0 && -steps > view->offset) {
2343 scroll_steps = -view->offset;
2345 } else if (steps > 0) {
2346 if (view->lineno == view->lines - 1 &&
2347 view->lines > view->height) {
2348 scroll_steps = view->lines - view->offset - 1;
2349 if (scroll_steps >= view->height)
2350 scroll_steps -= view->height - 1;
2351 }
2352 }
2353 }
2355 if (!view_is_displayed(view)) {
2356 view->offset += scroll_steps;
2357 assert(0 <= view->offset && view->offset < view->lines);
2358 view->ops->select(view, &view->line[view->lineno]);
2359 return;
2360 }
2362 /* Repaint the old "current" line if we be scrolling */
2363 if (ABS(steps) < view->height)
2364 draw_view_line(view, view->lineno - steps - view->offset);
2366 if (scroll_steps) {
2367 do_scroll_view(view, scroll_steps);
2368 return;
2369 }
2371 /* Draw the current line */
2372 draw_view_line(view, view->lineno - view->offset);
2374 redrawwin(view->win);
2375 wrefresh(view->win);
2376 report("");
2377 }
2380 /*
2381 * Searching
2382 */
2384 static void search_view(struct view *view, enum request request);
2386 static bool
2387 find_next_line(struct view *view, unsigned long lineno, struct line *line)
2388 {
2389 assert(view_is_displayed(view));
2391 if (!view->ops->grep(view, line))
2392 return FALSE;
2394 if (lineno - view->offset >= view->height) {
2395 view->offset = lineno;
2396 view->lineno = lineno;
2397 redraw_view(view);
2399 } else {
2400 unsigned long old_lineno = view->lineno - view->offset;
2402 view->lineno = lineno;
2403 draw_view_line(view, old_lineno);
2405 draw_view_line(view, view->lineno - view->offset);
2406 redrawwin(view->win);
2407 wrefresh(view->win);
2408 }
2410 report("Line %ld matches '%s'", lineno + 1, view->grep);
2411 return TRUE;
2412 }
2414 static void
2415 find_next(struct view *view, enum request request)
2416 {
2417 unsigned long lineno = view->lineno;
2418 int direction;
2420 if (!*view->grep) {
2421 if (!*opt_search)
2422 report("No previous search");
2423 else
2424 search_view(view, request);
2425 return;
2426 }
2428 switch (request) {
2429 case REQ_SEARCH:
2430 case REQ_FIND_NEXT:
2431 direction = 1;
2432 break;
2434 case REQ_SEARCH_BACK:
2435 case REQ_FIND_PREV:
2436 direction = -1;
2437 break;
2439 default:
2440 return;
2441 }
2443 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2444 lineno += direction;
2446 /* Note, lineno is unsigned long so will wrap around in which case it
2447 * will become bigger than view->lines. */
2448 for (; lineno < view->lines; lineno += direction) {
2449 struct line *line = &view->line[lineno];
2451 if (find_next_line(view, lineno, line))
2452 return;
2453 }
2455 report("No match found for '%s'", view->grep);
2456 }
2458 static void
2459 search_view(struct view *view, enum request request)
2460 {
2461 int regex_err;
2463 if (view->regex) {
2464 regfree(view->regex);
2465 *view->grep = 0;
2466 } else {
2467 view->regex = calloc(1, sizeof(*view->regex));
2468 if (!view->regex)
2469 return;
2470 }
2472 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2473 if (regex_err != 0) {
2474 char buf[SIZEOF_STR] = "unknown error";
2476 regerror(regex_err, view->regex, buf, sizeof(buf));
2477 report("Search failed: %s", buf);
2478 return;
2479 }
2481 string_copy(view->grep, opt_search);
2483 find_next(view, request);
2484 }
2486 /*
2487 * Incremental updating
2488 */
2490 static void
2491 reset_view(struct view *view)
2492 {
2493 int i;
2495 for (i = 0; i < view->lines; i++)
2496 free(view->line[i].data);
2497 free(view->line);
2499 view->line = NULL;
2500 view->offset = 0;
2501 view->lines = 0;
2502 view->lineno = 0;
2503 view->line_alloc = 0;
2504 view->vid[0] = 0;
2505 view->update_secs = 0;
2506 }
2508 static void
2509 free_argv(const char *argv[])
2510 {
2511 int argc;
2513 for (argc = 0; argv[argc]; argc++)
2514 free((void *) argv[argc]);
2515 }
2517 static bool
2518 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2519 {
2520 char buf[SIZEOF_STR];
2521 int argc;
2522 bool noreplace = flags == FORMAT_NONE;
2524 free_argv(dst_argv);
2526 for (argc = 0; src_argv[argc]; argc++) {
2527 const char *arg = src_argv[argc];
2528 size_t bufpos = 0;
2530 while (arg) {
2531 char *next = strstr(arg, "%(");
2532 int len = next - arg;
2533 const char *value;
2535 if (!next || noreplace) {
2536 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2537 noreplace = TRUE;
2538 len = strlen(arg);
2539 value = "";
2541 } else if (!prefixcmp(next, "%(directory)")) {
2542 value = opt_path;
2544 } else if (!prefixcmp(next, "%(file)")) {
2545 value = opt_file;
2547 } else if (!prefixcmp(next, "%(ref)")) {
2548 value = *opt_ref ? opt_ref : "HEAD";
2550 } else if (!prefixcmp(next, "%(head)")) {
2551 value = ref_head;
2553 } else if (!prefixcmp(next, "%(commit)")) {
2554 value = ref_commit;
2556 } else if (!prefixcmp(next, "%(blob)")) {
2557 value = ref_blob;
2559 } else {
2560 report("Unknown replacement: `%s`", next);
2561 return FALSE;
2562 }
2564 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2565 return FALSE;
2567 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2568 }
2570 dst_argv[argc] = strdup(buf);
2571 if (!dst_argv[argc])
2572 break;
2573 }
2575 dst_argv[argc] = NULL;
2577 return src_argv[argc] == NULL;
2578 }
2580 static void
2581 end_update(struct view *view, bool force)
2582 {
2583 if (!view->pipe)
2584 return;
2585 while (!view->ops->read(view, NULL))
2586 if (!force)
2587 return;
2588 set_nonblocking_input(FALSE);
2589 if (force)
2590 kill_io(view->pipe);
2591 done_io(view->pipe);
2592 view->pipe = NULL;
2593 }
2595 static void
2596 setup_update(struct view *view, const char *vid)
2597 {
2598 set_nonblocking_input(TRUE);
2599 reset_view(view);
2600 string_copy_rev(view->vid, vid);
2601 view->pipe = &view->io;
2602 view->start_time = time(NULL);
2603 }
2605 static bool
2606 prepare_update(struct view *view, const char *argv[], const char *dir,
2607 enum format_flags flags)
2608 {
2609 if (view->pipe)
2610 end_update(view, TRUE);
2611 return init_io_rd(&view->io, argv, dir, flags);
2612 }
2614 static bool
2615 prepare_update_file(struct view *view, const char *name)
2616 {
2617 if (view->pipe)
2618 end_update(view, TRUE);
2619 return io_open(&view->io, name);
2620 }
2622 static bool
2623 begin_update(struct view *view, bool refresh)
2624 {
2625 if (view->pipe)
2626 end_update(view, TRUE);
2628 if (refresh) {
2629 if (!start_io(&view->io))
2630 return FALSE;
2632 } else {
2633 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2634 opt_path[0] = 0;
2636 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2637 return FALSE;
2639 /* Put the current ref_* value to the view title ref
2640 * member. This is needed by the blob view. Most other
2641 * views sets it automatically after loading because the
2642 * first line is a commit line. */
2643 string_copy_rev(view->ref, view->id);
2644 }
2646 setup_update(view, view->id);
2648 return TRUE;
2649 }
2651 #define ITEM_CHUNK_SIZE 256
2652 static void *
2653 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2654 {
2655 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2656 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2658 if (mem == NULL || num_chunks != num_chunks_new) {
2659 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2660 mem = realloc(mem, *size * item_size);
2661 }
2663 return mem;
2664 }
2666 static struct line *
2667 realloc_lines(struct view *view, size_t line_size)
2668 {
2669 size_t alloc = view->line_alloc;
2670 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2671 sizeof(*view->line));
2673 if (!tmp)
2674 return NULL;
2676 view->line = tmp;
2677 view->line_alloc = alloc;
2678 return view->line;
2679 }
2681 static bool
2682 update_view(struct view *view)
2683 {
2684 char out_buffer[BUFSIZ * 2];
2685 char *line;
2686 /* Clear the view and redraw everything since the tree sorting
2687 * might have rearranged things. */
2688 bool redraw = view->lines == 0;
2689 bool can_read = TRUE;
2691 if (!view->pipe)
2692 return TRUE;
2694 if (!io_can_read(view->pipe)) {
2695 if (view->lines == 0) {
2696 time_t secs = time(NULL) - view->start_time;
2698 if (secs > view->update_secs) {
2699 if (view->update_secs == 0)
2700 redraw_view(view);
2701 update_view_title(view);
2702 view->update_secs = secs;
2703 }
2704 }
2705 return TRUE;
2706 }
2708 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2709 if (opt_iconv != ICONV_NONE) {
2710 ICONV_CONST char *inbuf = line;
2711 size_t inlen = strlen(line) + 1;
2713 char *outbuf = out_buffer;
2714 size_t outlen = sizeof(out_buffer);
2716 size_t ret;
2718 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2719 if (ret != (size_t) -1)
2720 line = out_buffer;
2721 }
2723 if (!view->ops->read(view, line))
2724 goto alloc_error;
2725 }
2727 {
2728 unsigned long lines = view->lines;
2729 int digits;
2731 for (digits = 0; lines; digits++)
2732 lines /= 10;
2734 /* Keep the displayed view in sync with line number scaling. */
2735 if (digits != view->digits) {
2736 view->digits = digits;
2737 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2738 redraw = TRUE;
2739 }
2740 }
2742 if (io_error(view->pipe)) {
2743 report("Failed to read: %s", io_strerror(view->pipe));
2744 end_update(view, TRUE);
2746 } else if (io_eof(view->pipe)) {
2747 report("");
2748 end_update(view, FALSE);
2749 }
2751 if (!view_is_displayed(view))
2752 return TRUE;
2754 if (redraw)
2755 redraw_view_from(view, 0);
2756 else
2757 redraw_view_dirty(view);
2759 /* Update the title _after_ the redraw so that if the redraw picks up a
2760 * commit reference in view->ref it'll be available here. */
2761 update_view_title(view);
2762 return TRUE;
2764 alloc_error:
2765 report("Allocation failure");
2766 end_update(view, TRUE);
2767 return FALSE;
2768 }
2770 static struct line *
2771 add_line_data(struct view *view, void *data, enum line_type type)
2772 {
2773 struct line *line;
2775 if (!realloc_lines(view, view->lines + 1))
2776 return NULL;
2778 line = &view->line[view->lines++];
2779 memset(line, 0, sizeof(*line));
2780 line->type = type;
2781 line->data = data;
2782 line->dirty = 1;
2784 return line;
2785 }
2787 static struct line *
2788 add_line_text(struct view *view, const char *text, enum line_type type)
2789 {
2790 char *data = text ? strdup(text) : NULL;
2792 return data ? add_line_data(view, data, type) : NULL;
2793 }
2795 static struct line *
2796 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2797 {
2798 char buf[SIZEOF_STR];
2799 va_list args;
2801 va_start(args, fmt);
2802 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2803 buf[0] = 0;
2804 va_end(args);
2806 return buf[0] ? add_line_text(view, buf, type) : NULL;
2807 }
2809 /*
2810 * View opening
2811 */
2813 enum open_flags {
2814 OPEN_DEFAULT = 0, /* Use default view switching. */
2815 OPEN_SPLIT = 1, /* Split current view. */
2816 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2817 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2818 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2819 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2820 OPEN_PREPARED = 32, /* Open already prepared command. */
2821 };
2823 static void
2824 open_view(struct view *prev, enum request request, enum open_flags flags)
2825 {
2826 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2827 bool split = !!(flags & OPEN_SPLIT);
2828 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2829 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2830 struct view *view = VIEW(request);
2831 int nviews = displayed_views();
2832 struct view *base_view = display[0];
2834 if (view == prev && nviews == 1 && !reload) {
2835 report("Already in %s view", view->name);
2836 return;
2837 }
2839 if (view->git_dir && !opt_git_dir[0]) {
2840 report("The %s view is disabled in pager view", view->name);
2841 return;
2842 }
2844 if (split) {
2845 display[1] = view;
2846 if (!backgrounded)
2847 current_view = 1;
2848 } else if (!nomaximize) {
2849 /* Maximize the current view. */
2850 memset(display, 0, sizeof(display));
2851 current_view = 0;
2852 display[current_view] = view;
2853 }
2855 /* Resize the view when switching between split- and full-screen,
2856 * or when switching between two different full-screen views. */
2857 if (nviews != displayed_views() ||
2858 (nviews == 1 && base_view != display[0]))
2859 resize_display();
2861 if (view->ops->open) {
2862 if (!view->ops->open(view)) {
2863 report("Failed to load %s view", view->name);
2864 return;
2865 }
2867 } else if ((reload || strcmp(view->vid, view->id)) &&
2868 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
2869 report("Failed to load %s view", view->name);
2870 return;
2871 }
2873 if (split && prev->lineno - prev->offset >= prev->height) {
2874 /* Take the title line into account. */
2875 int lines = prev->lineno - prev->offset - prev->height + 1;
2877 /* Scroll the view that was split if the current line is
2878 * outside the new limited view. */
2879 do_scroll_view(prev, lines);
2880 }
2882 if (prev && view != prev) {
2883 if (split && !backgrounded) {
2884 /* "Blur" the previous view. */
2885 update_view_title(prev);
2886 }
2888 view->parent = prev;
2889 }
2891 if (view->pipe && view->lines == 0) {
2892 /* Clear the old view and let the incremental updating refill
2893 * the screen. */
2894 werase(view->win);
2895 report("");
2896 } else if (view_is_displayed(view)) {
2897 redraw_view(view);
2898 report("");
2899 }
2901 /* If the view is backgrounded the above calls to report()
2902 * won't redraw the view title. */
2903 if (backgrounded)
2904 update_view_title(view);
2905 }
2907 static void
2908 open_external_viewer(const char *argv[], const char *dir)
2909 {
2910 def_prog_mode(); /* save current tty modes */
2911 endwin(); /* restore original tty modes */
2912 run_io_fg(argv, dir);
2913 fprintf(stderr, "Press Enter to continue");
2914 getc(opt_tty);
2915 reset_prog_mode();
2916 redraw_display();
2917 }
2919 static void
2920 open_mergetool(const char *file)
2921 {
2922 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2924 open_external_viewer(mergetool_argv, opt_cdup);
2925 }
2927 static void
2928 open_editor(bool from_root, const char *file)
2929 {
2930 const char *editor_argv[] = { "vi", file, NULL };
2931 const char *editor;
2933 editor = getenv("GIT_EDITOR");
2934 if (!editor && *opt_editor)
2935 editor = opt_editor;
2936 if (!editor)
2937 editor = getenv("VISUAL");
2938 if (!editor)
2939 editor = getenv("EDITOR");
2940 if (!editor)
2941 editor = "vi";
2943 editor_argv[0] = editor;
2944 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
2945 }
2947 static void
2948 open_run_request(enum request request)
2949 {
2950 struct run_request *req = get_run_request(request);
2951 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
2953 if (!req) {
2954 report("Unknown run request");
2955 return;
2956 }
2958 if (format_argv(argv, req->argv, FORMAT_ALL))
2959 open_external_viewer(argv, NULL);
2960 free_argv(argv);
2961 }
2963 /*
2964 * User request switch noodle
2965 */
2967 static int
2968 view_driver(struct view *view, enum request request)
2969 {
2970 int i;
2972 if (request == REQ_NONE) {
2973 doupdate();
2974 return TRUE;
2975 }
2977 if (request > REQ_NONE) {
2978 open_run_request(request);
2979 /* FIXME: When all views can refresh always do this. */
2980 if (view == VIEW(REQ_VIEW_STATUS) ||
2981 view == VIEW(REQ_VIEW_MAIN) ||
2982 view == VIEW(REQ_VIEW_LOG) ||
2983 view == VIEW(REQ_VIEW_STAGE))
2984 request = REQ_REFRESH;
2985 else
2986 return TRUE;
2987 }
2989 if (view && view->lines) {
2990 request = view->ops->request(view, request, &view->line[view->lineno]);
2991 if (request == REQ_NONE)
2992 return TRUE;
2993 }
2995 switch (request) {
2996 case REQ_MOVE_UP:
2997 case REQ_MOVE_DOWN:
2998 case REQ_MOVE_PAGE_UP:
2999 case REQ_MOVE_PAGE_DOWN:
3000 case REQ_MOVE_FIRST_LINE:
3001 case REQ_MOVE_LAST_LINE:
3002 move_view(view, request);
3003 break;
3005 case REQ_SCROLL_LINE_DOWN:
3006 case REQ_SCROLL_LINE_UP:
3007 case REQ_SCROLL_PAGE_DOWN:
3008 case REQ_SCROLL_PAGE_UP:
3009 scroll_view(view, request);
3010 break;
3012 case REQ_VIEW_BLAME:
3013 if (!opt_file[0]) {
3014 report("No file chosen, press %s to open tree view",
3015 get_key(REQ_VIEW_TREE));
3016 break;
3017 }
3018 open_view(view, request, OPEN_DEFAULT);
3019 break;
3021 case REQ_VIEW_BLOB:
3022 if (!ref_blob[0]) {
3023 report("No file chosen, press %s to open tree view",
3024 get_key(REQ_VIEW_TREE));
3025 break;
3026 }
3027 open_view(view, request, OPEN_DEFAULT);
3028 break;
3030 case REQ_VIEW_PAGER:
3031 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3032 report("No pager content, press %s to run command from prompt",
3033 get_key(REQ_PROMPT));
3034 break;
3035 }
3036 open_view(view, request, OPEN_DEFAULT);
3037 break;
3039 case REQ_VIEW_STAGE:
3040 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3041 report("No stage content, press %s to open the status view and choose file",
3042 get_key(REQ_VIEW_STATUS));
3043 break;
3044 }
3045 open_view(view, request, OPEN_DEFAULT);
3046 break;
3048 case REQ_VIEW_STATUS:
3049 if (opt_is_inside_work_tree == FALSE) {
3050 report("The status view requires a working tree");
3051 break;
3052 }
3053 open_view(view, request, OPEN_DEFAULT);
3054 break;
3056 case REQ_VIEW_MAIN:
3057 case REQ_VIEW_DIFF:
3058 case REQ_VIEW_LOG:
3059 case REQ_VIEW_TREE:
3060 case REQ_VIEW_HELP:
3061 open_view(view, request, OPEN_DEFAULT);
3062 break;
3064 case REQ_NEXT:
3065 case REQ_PREVIOUS:
3066 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3068 if ((view == VIEW(REQ_VIEW_DIFF) &&
3069 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3070 (view == VIEW(REQ_VIEW_DIFF) &&
3071 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3072 (view == VIEW(REQ_VIEW_STAGE) &&
3073 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3074 (view == VIEW(REQ_VIEW_BLOB) &&
3075 view->parent == VIEW(REQ_VIEW_TREE))) {
3076 int line;
3078 view = view->parent;
3079 line = view->lineno;
3080 move_view(view, request);
3081 if (view_is_displayed(view))
3082 update_view_title(view);
3083 if (line != view->lineno)
3084 view->ops->request(view, REQ_ENTER,
3085 &view->line[view->lineno]);
3087 } else {
3088 move_view(view, request);
3089 }
3090 break;
3092 case REQ_VIEW_NEXT:
3093 {
3094 int nviews = displayed_views();
3095 int next_view = (current_view + 1) % nviews;
3097 if (next_view == current_view) {
3098 report("Only one view is displayed");
3099 break;
3100 }
3102 current_view = next_view;
3103 /* Blur out the title of the previous view. */
3104 update_view_title(view);
3105 report("");
3106 break;
3107 }
3108 case REQ_REFRESH:
3109 report("Refreshing is not yet supported for the %s view", view->name);
3110 break;
3112 case REQ_MAXIMIZE:
3113 if (displayed_views() == 2)
3114 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
3115 break;
3117 case REQ_TOGGLE_LINENO:
3118 opt_line_number = !opt_line_number;
3119 redraw_display();
3120 break;
3122 case REQ_TOGGLE_DATE:
3123 opt_date = !opt_date;
3124 redraw_display();
3125 break;
3127 case REQ_TOGGLE_AUTHOR:
3128 opt_author = !opt_author;
3129 redraw_display();
3130 break;
3132 case REQ_TOGGLE_REV_GRAPH:
3133 opt_rev_graph = !opt_rev_graph;
3134 redraw_display();
3135 break;
3137 case REQ_TOGGLE_REFS:
3138 opt_show_refs = !opt_show_refs;
3139 redraw_display();
3140 break;
3142 case REQ_SEARCH:
3143 case REQ_SEARCH_BACK:
3144 search_view(view, request);
3145 break;
3147 case REQ_FIND_NEXT:
3148 case REQ_FIND_PREV:
3149 find_next(view, request);
3150 break;
3152 case REQ_STOP_LOADING:
3153 for (i = 0; i < ARRAY_SIZE(views); i++) {
3154 view = &views[i];
3155 if (view->pipe)
3156 report("Stopped loading the %s view", view->name),
3157 end_update(view, TRUE);
3158 }
3159 break;
3161 case REQ_SHOW_VERSION:
3162 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3163 return TRUE;
3165 case REQ_SCREEN_RESIZE:
3166 resize_display();
3167 /* Fall-through */
3168 case REQ_SCREEN_REDRAW:
3169 redraw_display();
3170 break;
3172 case REQ_EDIT:
3173 report("Nothing to edit");
3174 break;
3176 case REQ_ENTER:
3177 report("Nothing to enter");
3178 break;
3180 case REQ_VIEW_CLOSE:
3181 /* XXX: Mark closed views by letting view->parent point to the
3182 * view itself. Parents to closed view should never be
3183 * followed. */
3184 if (view->parent &&
3185 view->parent->parent != view->parent) {
3186 memset(display, 0, sizeof(display));
3187 current_view = 0;
3188 display[current_view] = view->parent;
3189 view->parent = view;
3190 resize_display();
3191 redraw_display();
3192 report("");
3193 break;
3194 }
3195 /* Fall-through */
3196 case REQ_QUIT:
3197 return FALSE;
3199 default:
3200 report("Unknown key, press 'h' for help");
3201 return TRUE;
3202 }
3204 return TRUE;
3205 }
3208 /*
3209 * Pager backend
3210 */
3212 static bool
3213 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3214 {
3215 char *text = line->data;
3217 if (opt_line_number && draw_lineno(view, lineno))
3218 return TRUE;
3220 draw_text(view, line->type, text, TRUE);
3221 return TRUE;
3222 }
3224 static bool
3225 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3226 {
3227 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3228 char refbuf[SIZEOF_STR];
3229 char *ref = NULL;
3231 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3232 ref = chomp_string(refbuf);
3234 if (!ref || !*ref)
3235 return TRUE;
3237 /* This is the only fatal call, since it can "corrupt" the buffer. */
3238 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3239 return FALSE;
3241 return TRUE;
3242 }
3244 static void
3245 add_pager_refs(struct view *view, struct line *line)
3246 {
3247 char buf[SIZEOF_STR];
3248 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3249 struct ref **refs;
3250 size_t bufpos = 0, refpos = 0;
3251 const char *sep = "Refs: ";
3252 bool is_tag = FALSE;
3254 assert(line->type == LINE_COMMIT);
3256 refs = get_refs(commit_id);
3257 if (!refs) {
3258 if (view == VIEW(REQ_VIEW_DIFF))
3259 goto try_add_describe_ref;
3260 return;
3261 }
3263 do {
3264 struct ref *ref = refs[refpos];
3265 const char *fmt = ref->tag ? "%s[%s]" :
3266 ref->remote ? "%s<%s>" : "%s%s";
3268 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3269 return;
3270 sep = ", ";
3271 if (ref->tag)
3272 is_tag = TRUE;
3273 } while (refs[refpos++]->next);
3275 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3276 try_add_describe_ref:
3277 /* Add <tag>-g<commit_id> "fake" reference. */
3278 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3279 return;
3280 }
3282 if (bufpos == 0)
3283 return;
3285 add_line_text(view, buf, LINE_PP_REFS);
3286 }
3288 static bool
3289 pager_read(struct view *view, char *data)
3290 {
3291 struct line *line;
3293 if (!data)
3294 return TRUE;
3296 line = add_line_text(view, data, get_line_type(data));
3297 if (!line)
3298 return FALSE;
3300 if (line->type == LINE_COMMIT &&
3301 (view == VIEW(REQ_VIEW_DIFF) ||
3302 view == VIEW(REQ_VIEW_LOG)))
3303 add_pager_refs(view, line);
3305 return TRUE;
3306 }
3308 static enum request
3309 pager_request(struct view *view, enum request request, struct line *line)
3310 {
3311 int split = 0;
3313 if (request != REQ_ENTER)
3314 return request;
3316 if (line->type == LINE_COMMIT &&
3317 (view == VIEW(REQ_VIEW_LOG) ||
3318 view == VIEW(REQ_VIEW_PAGER))) {
3319 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3320 split = 1;
3321 }
3323 /* Always scroll the view even if it was split. That way
3324 * you can use Enter to scroll through the log view and
3325 * split open each commit diff. */
3326 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3328 /* FIXME: A minor workaround. Scrolling the view will call report("")
3329 * but if we are scrolling a non-current view this won't properly
3330 * update the view title. */
3331 if (split)
3332 update_view_title(view);
3334 return REQ_NONE;
3335 }
3337 static bool
3338 pager_grep(struct view *view, struct line *line)
3339 {
3340 regmatch_t pmatch;
3341 char *text = line->data;
3343 if (!*text)
3344 return FALSE;
3346 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3347 return FALSE;
3349 return TRUE;
3350 }
3352 static void
3353 pager_select(struct view *view, struct line *line)
3354 {
3355 if (line->type == LINE_COMMIT) {
3356 char *text = (char *)line->data + STRING_SIZE("commit ");
3358 if (view != VIEW(REQ_VIEW_PAGER))
3359 string_copy_rev(view->ref, text);
3360 string_copy_rev(ref_commit, text);
3361 }
3362 }
3364 static struct view_ops pager_ops = {
3365 "line",
3366 NULL,
3367 NULL,
3368 pager_read,
3369 pager_draw,
3370 pager_request,
3371 pager_grep,
3372 pager_select,
3373 };
3375 static const char *log_argv[SIZEOF_ARG] = {
3376 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3377 };
3379 static enum request
3380 log_request(struct view *view, enum request request, struct line *line)
3381 {
3382 switch (request) {
3383 case REQ_REFRESH:
3384 load_refs();
3385 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3386 return REQ_NONE;
3387 default:
3388 return pager_request(view, request, line);
3389 }
3390 }
3392 static struct view_ops log_ops = {
3393 "line",
3394 log_argv,
3395 NULL,
3396 pager_read,
3397 pager_draw,
3398 log_request,
3399 pager_grep,
3400 pager_select,
3401 };
3403 static const char *diff_argv[SIZEOF_ARG] = {
3404 "git", "show", "--pretty=fuller", "--no-color", "--root",
3405 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3406 };
3408 static struct view_ops diff_ops = {
3409 "line",
3410 diff_argv,
3411 NULL,
3412 pager_read,
3413 pager_draw,
3414 pager_request,
3415 pager_grep,
3416 pager_select,
3417 };
3419 /*
3420 * Help backend
3421 */
3423 static bool
3424 help_open(struct view *view)
3425 {
3426 int lines = ARRAY_SIZE(req_info) + 2;
3427 int i;
3429 if (view->lines > 0)
3430 return TRUE;
3432 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3433 if (!req_info[i].request)
3434 lines++;
3436 lines += run_requests + 1;
3438 view->line = calloc(lines, sizeof(*view->line));
3439 if (!view->line)
3440 return FALSE;
3442 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3444 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3445 const char *key;
3447 if (req_info[i].request == REQ_NONE)
3448 continue;
3450 if (!req_info[i].request) {
3451 add_line_text(view, "", LINE_DEFAULT);
3452 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3453 continue;
3454 }
3456 key = get_key(req_info[i].request);
3457 if (!*key)
3458 key = "(no key defined)";
3460 add_line_format(view, LINE_DEFAULT, " %-25s %s",
3461 key, req_info[i].help);
3462 }
3464 if (run_requests) {
3465 add_line_text(view, "", LINE_DEFAULT);
3466 add_line_text(view, "External commands:", LINE_DEFAULT);
3467 }
3469 for (i = 0; i < run_requests; i++) {
3470 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3471 const char *key;
3472 char cmd[SIZEOF_STR];
3473 size_t bufpos;
3474 int argc;
3476 if (!req)
3477 continue;
3479 key = get_key_name(req->key);
3480 if (!*key)
3481 key = "(no key defined)";
3483 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3484 if (!string_format_from(cmd, &bufpos, "%s%s",
3485 argc ? " " : "", req->argv[argc]))
3486 return REQ_NONE;
3488 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3489 keymap_table[req->keymap].name, key, cmd);
3490 }
3492 return TRUE;
3493 }
3495 static struct view_ops help_ops = {
3496 "line",
3497 NULL,
3498 help_open,
3499 NULL,
3500 pager_draw,
3501 pager_request,
3502 pager_grep,
3503 pager_select,
3504 };
3507 /*
3508 * Tree backend
3509 */
3511 struct tree_stack_entry {
3512 struct tree_stack_entry *prev; /* Entry below this in the stack */
3513 unsigned long lineno; /* Line number to restore */
3514 char *name; /* Position of name in opt_path */
3515 };
3517 /* The top of the path stack. */
3518 static struct tree_stack_entry *tree_stack = NULL;
3519 unsigned long tree_lineno = 0;
3521 static void
3522 pop_tree_stack_entry(void)
3523 {
3524 struct tree_stack_entry *entry = tree_stack;
3526 tree_lineno = entry->lineno;
3527 entry->name[0] = 0;
3528 tree_stack = entry->prev;
3529 free(entry);
3530 }
3532 static void
3533 push_tree_stack_entry(const char *name, unsigned long lineno)
3534 {
3535 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3536 size_t pathlen = strlen(opt_path);
3538 if (!entry)
3539 return;
3541 entry->prev = tree_stack;
3542 entry->name = opt_path + pathlen;
3543 tree_stack = entry;
3545 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3546 pop_tree_stack_entry();
3547 return;
3548 }
3550 /* Move the current line to the first tree entry. */
3551 tree_lineno = 1;
3552 entry->lineno = lineno;
3553 }
3555 /* Parse output from git-ls-tree(1):
3556 *
3557 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3558 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3559 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3560 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3561 */
3563 #define SIZEOF_TREE_ATTR \
3564 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3566 #define TREE_UP_FORMAT "040000 tree %s\t.."
3568 static const char *
3569 tree_path(struct line *line)
3570 {
3571 const char *path = line->data;
3573 return path + SIZEOF_TREE_ATTR;
3574 }
3576 static int
3577 tree_compare_entry(struct line *line1, struct line *line2)
3578 {
3579 if (line1->type != line2->type)
3580 return line1->type == LINE_TREE_DIR ? -1 : 1;
3581 return strcmp(tree_path(line1), tree_path(line2));
3582 }
3584 static bool
3585 tree_read(struct view *view, char *text)
3586 {
3587 size_t textlen = text ? strlen(text) : 0;
3588 struct line *entry, *line;
3589 enum line_type type;
3591 if (!text)
3592 return TRUE;
3593 if (textlen <= SIZEOF_TREE_ATTR)
3594 return FALSE;
3596 type = text[STRING_SIZE("100644 ")] == 't'
3597 ? LINE_TREE_DIR : LINE_TREE_FILE;
3599 if (view->lines == 0 &&
3600 !add_line_format(view, LINE_DEFAULT, "Directory path /%s", opt_path))
3601 return FALSE;
3603 /* Strip the path part ... */
3604 if (*opt_path) {
3605 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3606 size_t striplen = strlen(opt_path);
3607 char *path = text + SIZEOF_TREE_ATTR;
3609 if (pathlen > striplen)
3610 memmove(path, path + striplen,
3611 pathlen - striplen + 1);
3613 /* Insert "link" to parent directory. */
3614 if (view->lines == 1 &&
3615 !add_line_format(view, LINE_TREE_DIR, TREE_UP_FORMAT, view->ref))
3616 return FALSE;
3617 }
3619 entry = add_line_text(view, text, type);
3620 if (!entry)
3621 return FALSE;
3622 text = entry->data;
3624 /* Skip "Directory ..." and ".." line. */
3625 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3626 if (tree_compare_entry(line, entry) <= 0)
3627 continue;
3629 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3631 line->data = text;
3632 line->type = type;
3633 for (; line <= entry; line++)
3634 line->dirty = line->cleareol = 1;
3635 return TRUE;
3636 }
3638 if (tree_lineno > view->lineno) {
3639 view->lineno = tree_lineno;
3640 tree_lineno = 0;
3641 }
3643 return TRUE;
3644 }
3646 static enum request
3647 tree_request(struct view *view, enum request request, struct line *line)
3648 {
3649 enum open_flags flags;
3651 switch (request) {
3652 case REQ_VIEW_BLAME:
3653 if (line->type != LINE_TREE_FILE) {
3654 report("Blame only supported for files");
3655 return REQ_NONE;
3656 }
3658 string_copy(opt_ref, view->vid);
3659 return request;
3661 case REQ_EDIT:
3662 if (line->type != LINE_TREE_FILE) {
3663 report("Edit only supported for files");
3664 } else if (!is_head_commit(view->vid)) {
3665 report("Edit only supported for files in the current work tree");
3666 } else {
3667 open_editor(TRUE, opt_file);
3668 }
3669 return REQ_NONE;
3671 case REQ_TREE_PARENT:
3672 if (!*opt_path) {
3673 /* quit view if at top of tree */
3674 return REQ_VIEW_CLOSE;
3675 }
3676 /* fake 'cd ..' */
3677 line = &view->line[1];
3678 break;
3680 case REQ_ENTER:
3681 break;
3683 default:
3684 return request;
3685 }
3687 /* Cleanup the stack if the tree view is at a different tree. */
3688 while (!*opt_path && tree_stack)
3689 pop_tree_stack_entry();
3691 switch (line->type) {
3692 case LINE_TREE_DIR:
3693 /* Depending on whether it is a subdir or parent (updir?) link
3694 * mangle the path buffer. */
3695 if (line == &view->line[1] && *opt_path) {
3696 pop_tree_stack_entry();
3698 } else {
3699 const char *basename = tree_path(line);
3701 push_tree_stack_entry(basename, view->lineno);
3702 }
3704 /* Trees and subtrees share the same ID, so they are not not
3705 * unique like blobs. */
3706 flags = OPEN_RELOAD;
3707 request = REQ_VIEW_TREE;
3708 break;
3710 case LINE_TREE_FILE:
3711 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3712 request = REQ_VIEW_BLOB;
3713 break;
3715 default:
3716 return TRUE;
3717 }
3719 open_view(view, request, flags);
3720 if (request == REQ_VIEW_TREE) {
3721 view->lineno = tree_lineno;
3722 }
3724 return REQ_NONE;
3725 }
3727 static void
3728 tree_select(struct view *view, struct line *line)
3729 {
3730 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3732 if (line->type == LINE_TREE_FILE) {
3733 string_copy_rev(ref_blob, text);
3734 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3736 } else if (line->type != LINE_TREE_DIR) {
3737 return;
3738 }
3740 string_copy_rev(view->ref, text);
3741 }
3743 static const char *tree_argv[SIZEOF_ARG] = {
3744 "git", "ls-tree", "%(commit)", "%(directory)", NULL
3745 };
3747 static struct view_ops tree_ops = {
3748 "file",
3749 tree_argv,
3750 NULL,
3751 tree_read,
3752 pager_draw,
3753 tree_request,
3754 pager_grep,
3755 tree_select,
3756 };
3758 static bool
3759 blob_read(struct view *view, char *line)
3760 {
3761 if (!line)
3762 return TRUE;
3763 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3764 }
3766 static const char *blob_argv[SIZEOF_ARG] = {
3767 "git", "cat-file", "blob", "%(blob)", NULL
3768 };
3770 static struct view_ops blob_ops = {
3771 "line",
3772 blob_argv,
3773 NULL,
3774 blob_read,
3775 pager_draw,
3776 pager_request,
3777 pager_grep,
3778 pager_select,
3779 };
3781 /*
3782 * Blame backend
3783 *
3784 * Loading the blame view is a two phase job:
3785 *
3786 * 1. File content is read either using opt_file from the
3787 * filesystem or using git-cat-file.
3788 * 2. Then blame information is incrementally added by
3789 * reading output from git-blame.
3790 */
3792 static const char *blame_head_argv[] = {
3793 "git", "blame", "--incremental", "--", "%(file)", NULL
3794 };
3796 static const char *blame_ref_argv[] = {
3797 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
3798 };
3800 static const char *blame_cat_file_argv[] = {
3801 "git", "cat-file", "blob", "%(ref):%(file)", NULL
3802 };
3804 struct blame_commit {
3805 char id[SIZEOF_REV]; /* SHA1 ID. */
3806 char title[128]; /* First line of the commit message. */
3807 char author[75]; /* Author of the commit. */
3808 struct tm time; /* Date from the author ident. */
3809 char filename[128]; /* Name of file. */
3810 };
3812 struct blame {
3813 struct blame_commit *commit;
3814 char text[1];
3815 };
3817 static bool
3818 blame_open(struct view *view)
3819 {
3820 if (*opt_ref || !io_open(&view->io, opt_file)) {
3821 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
3822 return FALSE;
3823 }
3825 setup_update(view, opt_file);
3826 string_format(view->ref, "%s ...", opt_file);
3828 return TRUE;
3829 }
3831 static struct blame_commit *
3832 get_blame_commit(struct view *view, const char *id)
3833 {
3834 size_t i;
3836 for (i = 0; i < view->lines; i++) {
3837 struct blame *blame = view->line[i].data;
3839 if (!blame->commit)
3840 continue;
3842 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3843 return blame->commit;
3844 }
3846 {
3847 struct blame_commit *commit = calloc(1, sizeof(*commit));
3849 if (commit)
3850 string_ncopy(commit->id, id, SIZEOF_REV);
3851 return commit;
3852 }
3853 }
3855 static bool
3856 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3857 {
3858 const char *pos = *posref;
3860 *posref = NULL;
3861 pos = strchr(pos + 1, ' ');
3862 if (!pos || !isdigit(pos[1]))
3863 return FALSE;
3864 *number = atoi(pos + 1);
3865 if (*number < min || *number > max)
3866 return FALSE;
3868 *posref = pos;
3869 return TRUE;
3870 }
3872 static struct blame_commit *
3873 parse_blame_commit(struct view *view, const char *text, int *blamed)
3874 {
3875 struct blame_commit *commit;
3876 struct blame *blame;
3877 const char *pos = text + SIZEOF_REV - 1;
3878 size_t lineno;
3879 size_t group;
3881 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3882 return NULL;
3884 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3885 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3886 return NULL;
3888 commit = get_blame_commit(view, text);
3889 if (!commit)
3890 return NULL;
3892 *blamed += group;
3893 while (group--) {
3894 struct line *line = &view->line[lineno + group - 1];
3896 blame = line->data;
3897 blame->commit = commit;
3898 line->dirty = 1;
3899 }
3901 return commit;
3902 }
3904 static bool
3905 blame_read_file(struct view *view, const char *line, bool *read_file)
3906 {
3907 if (!line) {
3908 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
3909 struct io io = {};
3911 if (view->lines == 0 && !view->parent)
3912 die("No blame exist for %s", view->vid);
3914 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
3915 report("Failed to load blame data");
3916 return TRUE;
3917 }
3919 done_io(view->pipe);
3920 view->io = io;
3921 *read_file = FALSE;
3922 return FALSE;
3924 } else {
3925 size_t linelen = strlen(line);
3926 struct blame *blame = malloc(sizeof(*blame) + linelen);
3928 blame->commit = NULL;
3929 strncpy(blame->text, line, linelen);
3930 blame->text[linelen] = 0;
3931 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
3932 }
3933 }
3935 static bool
3936 match_blame_header(const char *name, char **line)
3937 {
3938 size_t namelen = strlen(name);
3939 bool matched = !strncmp(name, *line, namelen);
3941 if (matched)
3942 *line += namelen;
3944 return matched;
3945 }
3947 static bool
3948 blame_read(struct view *view, char *line)
3949 {
3950 static struct blame_commit *commit = NULL;
3951 static int blamed = 0;
3952 static time_t author_time;
3953 static bool read_file = TRUE;
3955 if (read_file)
3956 return blame_read_file(view, line, &read_file);
3958 if (!line) {
3959 /* Reset all! */
3960 commit = NULL;
3961 blamed = 0;
3962 read_file = TRUE;
3963 string_format(view->ref, "%s", view->vid);
3964 if (view_is_displayed(view)) {
3965 update_view_title(view);
3966 redraw_view_from(view, 0);
3967 }
3968 return TRUE;
3969 }
3971 if (!commit) {
3972 commit = parse_blame_commit(view, line, &blamed);
3973 string_format(view->ref, "%s %2d%%", view->vid,
3974 blamed * 100 / view->lines);
3976 } else if (match_blame_header("author ", &line)) {
3977 string_ncopy(commit->author, line, strlen(line));
3979 } else if (match_blame_header("author-time ", &line)) {
3980 author_time = (time_t) atol(line);
3982 } else if (match_blame_header("author-tz ", &line)) {
3983 long tz;
3985 tz = ('0' - line[1]) * 60 * 60 * 10;
3986 tz += ('0' - line[2]) * 60 * 60;
3987 tz += ('0' - line[3]) * 60;
3988 tz += ('0' - line[4]) * 60;
3990 if (line[0] == '-')
3991 tz = -tz;
3993 author_time -= tz;
3994 gmtime_r(&author_time, &commit->time);
3996 } else if (match_blame_header("summary ", &line)) {
3997 string_ncopy(commit->title, line, strlen(line));
3999 } else if (match_blame_header("filename ", &line)) {
4000 string_ncopy(commit->filename, line, strlen(line));
4001 commit = NULL;
4002 }
4004 return TRUE;
4005 }
4007 static bool
4008 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4009 {
4010 struct blame *blame = line->data;
4011 struct tm *time = NULL;
4012 const char *id = NULL, *author = NULL;
4014 if (blame->commit && *blame->commit->filename) {
4015 id = blame->commit->id;
4016 author = blame->commit->author;
4017 time = &blame->commit->time;
4018 }
4020 if (opt_date && draw_date(view, time))
4021 return TRUE;
4023 if (opt_author &&
4024 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
4025 return TRUE;
4027 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4028 return TRUE;
4030 if (draw_lineno(view, lineno))
4031 return TRUE;
4033 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
4034 return TRUE;
4035 }
4037 static bool
4038 check_blame_commit(struct blame *blame)
4039 {
4040 if (!blame->commit)
4041 report("Commit data not loaded yet");
4042 else if (!strcmp(blame->commit->id, NULL_ID))
4043 report("No commit exist for the selected line");
4044 else
4045 return TRUE;
4046 return FALSE;
4047 }
4049 static enum request
4050 blame_request(struct view *view, enum request request, struct line *line)
4051 {
4052 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4053 struct blame *blame = line->data;
4055 switch (request) {
4056 case REQ_VIEW_BLAME:
4057 if (check_blame_commit(blame)) {
4058 string_copy(opt_ref, blame->commit->id);
4059 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4060 }
4061 break;
4063 case REQ_ENTER:
4064 if (!blame->commit) {
4065 report("No commit loaded yet");
4066 break;
4067 }
4069 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4070 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4071 break;
4073 if (!strcmp(blame->commit->id, NULL_ID)) {
4074 struct view *diff = VIEW(REQ_VIEW_DIFF);
4075 const char *diff_index_argv[] = {
4076 "git", "diff-index", "--root", "--cached",
4077 "--patch-with-stat", "-C", "-M",
4078 "HEAD", "--", view->vid, NULL
4079 };
4081 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4082 report("Failed to allocate diff command");
4083 break;
4084 }
4085 flags |= OPEN_PREPARED;
4086 }
4088 open_view(view, REQ_VIEW_DIFF, flags);
4089 break;
4091 default:
4092 return request;
4093 }
4095 return REQ_NONE;
4096 }
4098 static bool
4099 blame_grep(struct view *view, struct line *line)
4100 {
4101 struct blame *blame = line->data;
4102 struct blame_commit *commit = blame->commit;
4103 regmatch_t pmatch;
4105 #define MATCH(text, on) \
4106 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4108 if (commit) {
4109 char buf[DATE_COLS + 1];
4111 if (MATCH(commit->title, 1) ||
4112 MATCH(commit->author, opt_author) ||
4113 MATCH(commit->id, opt_date))
4114 return TRUE;
4116 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
4117 MATCH(buf, 1))
4118 return TRUE;
4119 }
4121 return MATCH(blame->text, 1);
4123 #undef MATCH
4124 }
4126 static void
4127 blame_select(struct view *view, struct line *line)
4128 {
4129 struct blame *blame = line->data;
4130 struct blame_commit *commit = blame->commit;
4132 if (!commit)
4133 return;
4135 if (!strcmp(commit->id, NULL_ID))
4136 string_ncopy(ref_commit, "HEAD", 4);
4137 else
4138 string_copy_rev(ref_commit, commit->id);
4139 }
4141 static struct view_ops blame_ops = {
4142 "line",
4143 NULL,
4144 blame_open,
4145 blame_read,
4146 blame_draw,
4147 blame_request,
4148 blame_grep,
4149 blame_select,
4150 };
4152 /*
4153 * Status backend
4154 */
4156 struct status {
4157 char status;
4158 struct {
4159 mode_t mode;
4160 char rev[SIZEOF_REV];
4161 char name[SIZEOF_STR];
4162 } old;
4163 struct {
4164 mode_t mode;
4165 char rev[SIZEOF_REV];
4166 char name[SIZEOF_STR];
4167 } new;
4168 };
4170 static char status_onbranch[SIZEOF_STR];
4171 static struct status stage_status;
4172 static enum line_type stage_line_type;
4173 static size_t stage_chunks;
4174 static int *stage_chunk;
4176 /* This should work even for the "On branch" line. */
4177 static inline bool
4178 status_has_none(struct view *view, struct line *line)
4179 {
4180 return line < view->line + view->lines && !line[1].data;
4181 }
4183 /* Get fields from the diff line:
4184 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4185 */
4186 static inline bool
4187 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4188 {
4189 const char *old_mode = buf + 1;
4190 const char *new_mode = buf + 8;
4191 const char *old_rev = buf + 15;
4192 const char *new_rev = buf + 56;
4193 const char *status = buf + 97;
4195 if (bufsize < 98 ||
4196 old_mode[-1] != ':' ||
4197 new_mode[-1] != ' ' ||
4198 old_rev[-1] != ' ' ||
4199 new_rev[-1] != ' ' ||
4200 status[-1] != ' ')
4201 return FALSE;
4203 file->status = *status;
4205 string_copy_rev(file->old.rev, old_rev);
4206 string_copy_rev(file->new.rev, new_rev);
4208 file->old.mode = strtoul(old_mode, NULL, 8);
4209 file->new.mode = strtoul(new_mode, NULL, 8);
4211 file->old.name[0] = file->new.name[0] = 0;
4213 return TRUE;
4214 }
4216 static bool
4217 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4218 {
4219 struct status *file = NULL;
4220 struct status *unmerged = NULL;
4221 char *buf;
4222 struct io io = {};
4224 if (!run_io(&io, argv, NULL, IO_RD))
4225 return FALSE;
4227 add_line_data(view, NULL, type);
4229 while ((buf = io_get(&io, 0, TRUE))) {
4230 if (!file) {
4231 file = calloc(1, sizeof(*file));
4232 if (!file || !add_line_data(view, file, type))
4233 goto error_out;
4234 }
4236 /* Parse diff info part. */
4237 if (status) {
4238 file->status = status;
4239 if (status == 'A')
4240 string_copy(file->old.rev, NULL_ID);
4242 } else if (!file->status) {
4243 if (!status_get_diff(file, buf, strlen(buf)))
4244 goto error_out;
4246 buf = io_get(&io, 0, TRUE);
4247 if (!buf)
4248 break;
4250 /* Collapse all 'M'odified entries that follow a
4251 * associated 'U'nmerged entry. */
4252 if (file->status == 'U') {
4253 unmerged = file;
4255 } else if (unmerged) {
4256 int collapse = !strcmp(buf, unmerged->new.name);
4258 unmerged = NULL;
4259 if (collapse) {
4260 free(file);
4261 view->lines--;
4262 continue;
4263 }
4264 }
4265 }
4267 /* Grab the old name for rename/copy. */
4268 if (!*file->old.name &&
4269 (file->status == 'R' || file->status == 'C')) {
4270 string_ncopy(file->old.name, buf, strlen(buf));
4272 buf = io_get(&io, 0, TRUE);
4273 if (!buf)
4274 break;
4275 }
4277 /* git-ls-files just delivers a NUL separated list of
4278 * file names similar to the second half of the
4279 * git-diff-* output. */
4280 string_ncopy(file->new.name, buf, strlen(buf));
4281 if (!*file->old.name)
4282 string_copy(file->old.name, file->new.name);
4283 file = NULL;
4284 }
4286 if (io_error(&io)) {
4287 error_out:
4288 done_io(&io);
4289 return FALSE;
4290 }
4292 if (!view->line[view->lines - 1].data)
4293 add_line_data(view, NULL, LINE_STAT_NONE);
4295 done_io(&io);
4296 return TRUE;
4297 }
4299 /* Don't show unmerged entries in the staged section. */
4300 static const char *status_diff_index_argv[] = {
4301 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4302 "--cached", "-M", "HEAD", NULL
4303 };
4305 static const char *status_diff_files_argv[] = {
4306 "git", "diff-files", "-z", NULL
4307 };
4309 static const char *status_list_other_argv[] = {
4310 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4311 };
4313 static const char *status_list_no_head_argv[] = {
4314 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4315 };
4317 static const char *update_index_argv[] = {
4318 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4319 };
4321 /* First parse staged info using git-diff-index(1), then parse unstaged
4322 * info using git-diff-files(1), and finally untracked files using
4323 * git-ls-files(1). */
4324 static bool
4325 status_open(struct view *view)
4326 {
4327 unsigned long prev_lineno = view->lineno;
4329 reset_view(view);
4331 add_line_data(view, NULL, LINE_STAT_HEAD);
4332 if (is_initial_commit())
4333 string_copy(status_onbranch, "Initial commit");
4334 else if (!*opt_head)
4335 string_copy(status_onbranch, "Not currently on any branch");
4336 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4337 return FALSE;
4339 run_io_bg(update_index_argv);
4341 if (is_initial_commit()) {
4342 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4343 return FALSE;
4344 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4345 return FALSE;
4346 }
4348 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4349 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4350 return FALSE;
4352 /* If all went well restore the previous line number to stay in
4353 * the context or select a line with something that can be
4354 * updated. */
4355 if (prev_lineno >= view->lines)
4356 prev_lineno = view->lines - 1;
4357 while (prev_lineno < view->lines && !view->line[prev_lineno].data)
4358 prev_lineno++;
4359 while (prev_lineno > 0 && !view->line[prev_lineno].data)
4360 prev_lineno--;
4362 /* If the above fails, always skip the "On branch" line. */
4363 if (prev_lineno < view->lines)
4364 view->lineno = prev_lineno;
4365 else
4366 view->lineno = 1;
4368 if (view->lineno < view->offset)
4369 view->offset = view->lineno;
4370 else if (view->offset + view->height <= view->lineno)
4371 view->offset = view->lineno - view->height + 1;
4373 return TRUE;
4374 }
4376 static bool
4377 status_draw(struct view *view, struct line *line, unsigned int lineno)
4378 {
4379 struct status *status = line->data;
4380 enum line_type type;
4381 const char *text;
4383 if (!status) {
4384 switch (line->type) {
4385 case LINE_STAT_STAGED:
4386 type = LINE_STAT_SECTION;
4387 text = "Changes to be committed:";
4388 break;
4390 case LINE_STAT_UNSTAGED:
4391 type = LINE_STAT_SECTION;
4392 text = "Changed but not updated:";
4393 break;
4395 case LINE_STAT_UNTRACKED:
4396 type = LINE_STAT_SECTION;
4397 text = "Untracked files:";
4398 break;
4400 case LINE_STAT_NONE:
4401 type = LINE_DEFAULT;
4402 text = " (no files)";
4403 break;
4405 case LINE_STAT_HEAD:
4406 type = LINE_STAT_HEAD;
4407 text = status_onbranch;
4408 break;
4410 default:
4411 return FALSE;
4412 }
4413 } else {
4414 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4416 buf[0] = status->status;
4417 if (draw_text(view, line->type, buf, TRUE))
4418 return TRUE;
4419 type = LINE_DEFAULT;
4420 text = status->new.name;
4421 }
4423 draw_text(view, type, text, TRUE);
4424 return TRUE;
4425 }
4427 static enum request
4428 status_enter(struct view *view, struct line *line)
4429 {
4430 struct status *status = line->data;
4431 const char *oldpath = status ? status->old.name : NULL;
4432 /* Diffs for unmerged entries are empty when passing the new
4433 * path, so leave it empty. */
4434 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4435 const char *info;
4436 enum open_flags split;
4437 struct view *stage = VIEW(REQ_VIEW_STAGE);
4439 if (line->type == LINE_STAT_NONE ||
4440 (!status && line[1].type == LINE_STAT_NONE)) {
4441 report("No file to diff");
4442 return REQ_NONE;
4443 }
4445 switch (line->type) {
4446 case LINE_STAT_STAGED:
4447 if (is_initial_commit()) {
4448 const char *no_head_diff_argv[] = {
4449 "git", "diff", "--no-color", "--patch-with-stat",
4450 "--", "/dev/null", newpath, NULL
4451 };
4453 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4454 return REQ_QUIT;
4455 } else {
4456 const char *index_show_argv[] = {
4457 "git", "diff-index", "--root", "--patch-with-stat",
4458 "-C", "-M", "--cached", "HEAD", "--",
4459 oldpath, newpath, NULL
4460 };
4462 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4463 return REQ_QUIT;
4464 }
4466 if (status)
4467 info = "Staged changes to %s";
4468 else
4469 info = "Staged changes";
4470 break;
4472 case LINE_STAT_UNSTAGED:
4473 {
4474 const char *files_show_argv[] = {
4475 "git", "diff-files", "--root", "--patch-with-stat",
4476 "-C", "-M", "--", oldpath, newpath, NULL
4477 };
4479 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
4480 return REQ_QUIT;
4481 if (status)
4482 info = "Unstaged changes to %s";
4483 else
4484 info = "Unstaged changes";
4485 break;
4486 }
4487 case LINE_STAT_UNTRACKED:
4488 if (!newpath) {
4489 report("No file to show");
4490 return REQ_NONE;
4491 }
4493 if (!suffixcmp(status->new.name, -1, "/")) {
4494 report("Cannot display a directory");
4495 return REQ_NONE;
4496 }
4498 if (!prepare_update_file(stage, newpath))
4499 return REQ_QUIT;
4500 info = "Untracked file %s";
4501 break;
4503 case LINE_STAT_HEAD:
4504 return REQ_NONE;
4506 default:
4507 die("line type %d not handled in switch", line->type);
4508 }
4510 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4511 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH | split);
4512 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4513 if (status) {
4514 stage_status = *status;
4515 } else {
4516 memset(&stage_status, 0, sizeof(stage_status));
4517 }
4519 stage_line_type = line->type;
4520 stage_chunks = 0;
4521 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4522 }
4524 return REQ_NONE;
4525 }
4527 static bool
4528 status_exists(struct status *status, enum line_type type)
4529 {
4530 struct view *view = VIEW(REQ_VIEW_STATUS);
4531 struct line *line;
4533 for (line = view->line; line < view->line + view->lines; line++) {
4534 struct status *pos = line->data;
4536 if (line->type == type && pos &&
4537 !strcmp(status->new.name, pos->new.name))
4538 return TRUE;
4539 }
4541 return FALSE;
4542 }
4545 static bool
4546 status_update_prepare(struct io *io, enum line_type type)
4547 {
4548 const char *staged_argv[] = {
4549 "git", "update-index", "-z", "--index-info", NULL
4550 };
4551 const char *others_argv[] = {
4552 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
4553 };
4555 switch (type) {
4556 case LINE_STAT_STAGED:
4557 return run_io(io, staged_argv, opt_cdup, IO_WR);
4559 case LINE_STAT_UNSTAGED:
4560 return run_io(io, others_argv, opt_cdup, IO_WR);
4562 case LINE_STAT_UNTRACKED:
4563 return run_io(io, others_argv, NULL, IO_WR);
4565 default:
4566 die("line type %d not handled in switch", type);
4567 return FALSE;
4568 }
4569 }
4571 static bool
4572 status_update_write(struct io *io, struct status *status, enum line_type type)
4573 {
4574 char buf[SIZEOF_STR];
4575 size_t bufsize = 0;
4577 switch (type) {
4578 case LINE_STAT_STAGED:
4579 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4580 status->old.mode,
4581 status->old.rev,
4582 status->old.name, 0))
4583 return FALSE;
4584 break;
4586 case LINE_STAT_UNSTAGED:
4587 case LINE_STAT_UNTRACKED:
4588 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4589 return FALSE;
4590 break;
4592 default:
4593 die("line type %d not handled in switch", type);
4594 }
4596 return io_write(io, buf, bufsize);
4597 }
4599 static bool
4600 status_update_file(struct status *status, enum line_type type)
4601 {
4602 struct io io = {};
4603 bool result;
4605 if (!status_update_prepare(&io, type))
4606 return FALSE;
4608 result = status_update_write(&io, status, type);
4609 done_io(&io);
4610 return result;
4611 }
4613 static bool
4614 status_update_files(struct view *view, struct line *line)
4615 {
4616 struct io io = {};
4617 bool result = TRUE;
4618 struct line *pos = view->line + view->lines;
4619 int files = 0;
4620 int file, done;
4622 if (!status_update_prepare(&io, line->type))
4623 return FALSE;
4625 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4626 files++;
4628 for (file = 0, done = 0; result && file < files; line++, file++) {
4629 int almost_done = file * 100 / files;
4631 if (almost_done > done) {
4632 done = almost_done;
4633 string_format(view->ref, "updating file %u of %u (%d%% done)",
4634 file, files, done);
4635 update_view_title(view);
4636 }
4637 result = status_update_write(&io, line->data, line->type);
4638 }
4640 done_io(&io);
4641 return result;
4642 }
4644 static bool
4645 status_update(struct view *view)
4646 {
4647 struct line *line = &view->line[view->lineno];
4649 assert(view->lines);
4651 if (!line->data) {
4652 /* This should work even for the "On branch" line. */
4653 if (line < view->line + view->lines && !line[1].data) {
4654 report("Nothing to update");
4655 return FALSE;
4656 }
4658 if (!status_update_files(view, line + 1)) {
4659 report("Failed to update file status");
4660 return FALSE;
4661 }
4663 } else if (!status_update_file(line->data, line->type)) {
4664 report("Failed to update file status");
4665 return FALSE;
4666 }
4668 return TRUE;
4669 }
4671 static bool
4672 status_revert(struct status *status, enum line_type type, bool has_none)
4673 {
4674 if (!status || type != LINE_STAT_UNSTAGED) {
4675 if (type == LINE_STAT_STAGED) {
4676 report("Cannot revert changes to staged files");
4677 } else if (type == LINE_STAT_UNTRACKED) {
4678 report("Cannot revert changes to untracked files");
4679 } else if (has_none) {
4680 report("Nothing to revert");
4681 } else {
4682 report("Cannot revert changes to multiple files");
4683 }
4684 return FALSE;
4686 } else {
4687 const char *checkout_argv[] = {
4688 "git", "checkout", "--", status->old.name, NULL
4689 };
4691 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
4692 return FALSE;
4693 return run_io_fg(checkout_argv, opt_cdup);
4694 }
4695 }
4697 static enum request
4698 status_request(struct view *view, enum request request, struct line *line)
4699 {
4700 struct status *status = line->data;
4702 switch (request) {
4703 case REQ_STATUS_UPDATE:
4704 if (!status_update(view))
4705 return REQ_NONE;
4706 break;
4708 case REQ_STATUS_REVERT:
4709 if (!status_revert(status, line->type, status_has_none(view, line)))
4710 return REQ_NONE;
4711 break;
4713 case REQ_STATUS_MERGE:
4714 if (!status || status->status != 'U') {
4715 report("Merging only possible for files with unmerged status ('U').");
4716 return REQ_NONE;
4717 }
4718 open_mergetool(status->new.name);
4719 break;
4721 case REQ_EDIT:
4722 if (!status)
4723 return request;
4724 if (status->status == 'D') {
4725 report("File has been deleted.");
4726 return REQ_NONE;
4727 }
4729 open_editor(status->status != '?', status->new.name);
4730 break;
4732 case REQ_VIEW_BLAME:
4733 if (status) {
4734 string_copy(opt_file, status->new.name);
4735 opt_ref[0] = 0;
4736 }
4737 return request;
4739 case REQ_ENTER:
4740 /* After returning the status view has been split to
4741 * show the stage view. No further reloading is
4742 * necessary. */
4743 status_enter(view, line);
4744 return REQ_NONE;
4746 case REQ_REFRESH:
4747 /* Simply reload the view. */
4748 break;
4750 default:
4751 return request;
4752 }
4754 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4756 return REQ_NONE;
4757 }
4759 static void
4760 status_select(struct view *view, struct line *line)
4761 {
4762 struct status *status = line->data;
4763 char file[SIZEOF_STR] = "all files";
4764 const char *text;
4765 const char *key;
4767 if (status && !string_format(file, "'%s'", status->new.name))
4768 return;
4770 if (!status && line[1].type == LINE_STAT_NONE)
4771 line++;
4773 switch (line->type) {
4774 case LINE_STAT_STAGED:
4775 text = "Press %s to unstage %s for commit";
4776 break;
4778 case LINE_STAT_UNSTAGED:
4779 text = "Press %s to stage %s for commit";
4780 break;
4782 case LINE_STAT_UNTRACKED:
4783 text = "Press %s to stage %s for addition";
4784 break;
4786 case LINE_STAT_HEAD:
4787 case LINE_STAT_NONE:
4788 text = "Nothing to update";
4789 break;
4791 default:
4792 die("line type %d not handled in switch", line->type);
4793 }
4795 if (status && status->status == 'U') {
4796 text = "Press %s to resolve conflict in %s";
4797 key = get_key(REQ_STATUS_MERGE);
4799 } else {
4800 key = get_key(REQ_STATUS_UPDATE);
4801 }
4803 string_format(view->ref, text, key, file);
4804 }
4806 static bool
4807 status_grep(struct view *view, struct line *line)
4808 {
4809 struct status *status = line->data;
4810 enum { S_STATUS, S_NAME, S_END } state;
4811 char buf[2] = "?";
4812 regmatch_t pmatch;
4814 if (!status)
4815 return FALSE;
4817 for (state = S_STATUS; state < S_END; state++) {
4818 const char *text;
4820 switch (state) {
4821 case S_NAME: text = status->new.name; break;
4822 case S_STATUS:
4823 buf[0] = status->status;
4824 text = buf;
4825 break;
4827 default:
4828 return FALSE;
4829 }
4831 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4832 return TRUE;
4833 }
4835 return FALSE;
4836 }
4838 static struct view_ops status_ops = {
4839 "file",
4840 NULL,
4841 status_open,
4842 NULL,
4843 status_draw,
4844 status_request,
4845 status_grep,
4846 status_select,
4847 };
4850 static bool
4851 stage_diff_write(struct io *io, struct line *line, struct line *end)
4852 {
4853 while (line < end) {
4854 if (!io_write(io, line->data, strlen(line->data)) ||
4855 !io_write(io, "\n", 1))
4856 return FALSE;
4857 line++;
4858 if (line->type == LINE_DIFF_CHUNK ||
4859 line->type == LINE_DIFF_HEADER)
4860 break;
4861 }
4863 return TRUE;
4864 }
4866 static struct line *
4867 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4868 {
4869 for (; view->line < line; line--)
4870 if (line->type == type)
4871 return line;
4873 return NULL;
4874 }
4876 static bool
4877 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
4878 {
4879 const char *apply_argv[SIZEOF_ARG] = {
4880 "git", "apply", "--whitespace=nowarn", NULL
4881 };
4882 struct line *diff_hdr;
4883 struct io io = {};
4884 int argc = 3;
4886 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4887 if (!diff_hdr)
4888 return FALSE;
4890 if (!revert)
4891 apply_argv[argc++] = "--cached";
4892 if (revert || stage_line_type == LINE_STAT_STAGED)
4893 apply_argv[argc++] = "-R";
4894 apply_argv[argc++] = "-";
4895 apply_argv[argc++] = NULL;
4896 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
4897 return FALSE;
4899 if (!stage_diff_write(&io, diff_hdr, chunk) ||
4900 !stage_diff_write(&io, chunk, view->line + view->lines))
4901 chunk = NULL;
4903 done_io(&io);
4904 run_io_bg(update_index_argv);
4906 return chunk ? TRUE : FALSE;
4907 }
4909 static bool
4910 stage_update(struct view *view, struct line *line)
4911 {
4912 struct line *chunk = NULL;
4914 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
4915 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4917 if (chunk) {
4918 if (!stage_apply_chunk(view, chunk, FALSE)) {
4919 report("Failed to apply chunk");
4920 return FALSE;
4921 }
4923 } else if (!stage_status.status) {
4924 view = VIEW(REQ_VIEW_STATUS);
4926 for (line = view->line; line < view->line + view->lines; line++)
4927 if (line->type == stage_line_type)
4928 break;
4930 if (!status_update_files(view, line + 1)) {
4931 report("Failed to update files");
4932 return FALSE;
4933 }
4935 } else if (!status_update_file(&stage_status, stage_line_type)) {
4936 report("Failed to update file");
4937 return FALSE;
4938 }
4940 return TRUE;
4941 }
4943 static bool
4944 stage_revert(struct view *view, struct line *line)
4945 {
4946 struct line *chunk = NULL;
4948 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
4949 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4951 if (chunk) {
4952 if (!prompt_yesno("Are you sure you want to revert changes?"))
4953 return FALSE;
4955 if (!stage_apply_chunk(view, chunk, TRUE)) {
4956 report("Failed to revert chunk");
4957 return FALSE;
4958 }
4959 return TRUE;
4961 } else {
4962 return status_revert(stage_status.status ? &stage_status : NULL,
4963 stage_line_type, FALSE);
4964 }
4965 }
4968 static void
4969 stage_next(struct view *view, struct line *line)
4970 {
4971 int i;
4973 if (!stage_chunks) {
4974 static size_t alloc = 0;
4975 int *tmp;
4977 for (line = view->line; line < view->line + view->lines; line++) {
4978 if (line->type != LINE_DIFF_CHUNK)
4979 continue;
4981 tmp = realloc_items(stage_chunk, &alloc,
4982 stage_chunks, sizeof(*tmp));
4983 if (!tmp) {
4984 report("Allocation failure");
4985 return;
4986 }
4988 stage_chunk = tmp;
4989 stage_chunk[stage_chunks++] = line - view->line;
4990 }
4991 }
4993 for (i = 0; i < stage_chunks; i++) {
4994 if (stage_chunk[i] > view->lineno) {
4995 do_scroll_view(view, stage_chunk[i] - view->lineno);
4996 report("Chunk %d of %d", i + 1, stage_chunks);
4997 return;
4998 }
4999 }
5001 report("No next chunk found");
5002 }
5004 static enum request
5005 stage_request(struct view *view, enum request request, struct line *line)
5006 {
5007 switch (request) {
5008 case REQ_STATUS_UPDATE:
5009 if (!stage_update(view, line))
5010 return REQ_NONE;
5011 break;
5013 case REQ_STATUS_REVERT:
5014 if (!stage_revert(view, line))
5015 return REQ_NONE;
5016 break;
5018 case REQ_STAGE_NEXT:
5019 if (stage_line_type == LINE_STAT_UNTRACKED) {
5020 report("File is untracked; press %s to add",
5021 get_key(REQ_STATUS_UPDATE));
5022 return REQ_NONE;
5023 }
5024 stage_next(view, line);
5025 return REQ_NONE;
5027 case REQ_EDIT:
5028 if (!stage_status.new.name[0])
5029 return request;
5030 if (stage_status.status == 'D') {
5031 report("File has been deleted.");
5032 return REQ_NONE;
5033 }
5035 open_editor(stage_status.status != '?', stage_status.new.name);
5036 break;
5038 case REQ_REFRESH:
5039 /* Reload everything ... */
5040 break;
5042 case REQ_VIEW_BLAME:
5043 if (stage_status.new.name[0]) {
5044 string_copy(opt_file, stage_status.new.name);
5045 opt_ref[0] = 0;
5046 }
5047 return request;
5049 case REQ_ENTER:
5050 return pager_request(view, request, line);
5052 default:
5053 return request;
5054 }
5056 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
5058 /* Check whether the staged entry still exists, and close the
5059 * stage view if it doesn't. */
5060 if (!status_exists(&stage_status, stage_line_type))
5061 return REQ_VIEW_CLOSE;
5063 if (stage_line_type == LINE_STAT_UNTRACKED) {
5064 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5065 report("Cannot display a directory");
5066 return REQ_NONE;
5067 }
5069 if (!prepare_update_file(view, stage_status.new.name)) {
5070 report("Failed to open file: %s", strerror(errno));
5071 return REQ_NONE;
5072 }
5073 }
5074 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5076 return REQ_NONE;
5077 }
5079 static struct view_ops stage_ops = {
5080 "line",
5081 NULL,
5082 NULL,
5083 pager_read,
5084 pager_draw,
5085 stage_request,
5086 pager_grep,
5087 pager_select,
5088 };
5091 /*
5092 * Revision graph
5093 */
5095 struct commit {
5096 char id[SIZEOF_REV]; /* SHA1 ID. */
5097 char title[128]; /* First line of the commit message. */
5098 char author[75]; /* Author of the commit. */
5099 struct tm time; /* Date from the author ident. */
5100 struct ref **refs; /* Repository references. */
5101 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5102 size_t graph_size; /* The width of the graph array. */
5103 bool has_parents; /* Rewritten --parents seen. */
5104 };
5106 /* Size of rev graph with no "padding" columns */
5107 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5109 struct rev_graph {
5110 struct rev_graph *prev, *next, *parents;
5111 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5112 size_t size;
5113 struct commit *commit;
5114 size_t pos;
5115 unsigned int boundary:1;
5116 };
5118 /* Parents of the commit being visualized. */
5119 static struct rev_graph graph_parents[4];
5121 /* The current stack of revisions on the graph. */
5122 static struct rev_graph graph_stacks[4] = {
5123 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5124 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5125 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5126 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5127 };
5129 static inline bool
5130 graph_parent_is_merge(struct rev_graph *graph)
5131 {
5132 return graph->parents->size > 1;
5133 }
5135 static inline void
5136 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5137 {
5138 struct commit *commit = graph->commit;
5140 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5141 commit->graph[commit->graph_size++] = symbol;
5142 }
5144 static void
5145 clear_rev_graph(struct rev_graph *graph)
5146 {
5147 graph->boundary = 0;
5148 graph->size = graph->pos = 0;
5149 graph->commit = NULL;
5150 memset(graph->parents, 0, sizeof(*graph->parents));
5151 }
5153 static void
5154 done_rev_graph(struct rev_graph *graph)
5155 {
5156 if (graph_parent_is_merge(graph) &&
5157 graph->pos < graph->size - 1 &&
5158 graph->next->size == graph->size + graph->parents->size - 1) {
5159 size_t i = graph->pos + graph->parents->size - 1;
5161 graph->commit->graph_size = i * 2;
5162 while (i < graph->next->size - 1) {
5163 append_to_rev_graph(graph, ' ');
5164 append_to_rev_graph(graph, '\\');
5165 i++;
5166 }
5167 }
5169 clear_rev_graph(graph);
5170 }
5172 static void
5173 push_rev_graph(struct rev_graph *graph, const char *parent)
5174 {
5175 int i;
5177 /* "Collapse" duplicate parents lines.
5178 *
5179 * FIXME: This needs to also update update the drawn graph but
5180 * for now it just serves as a method for pruning graph lines. */
5181 for (i = 0; i < graph->size; i++)
5182 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5183 return;
5185 if (graph->size < SIZEOF_REVITEMS) {
5186 string_copy_rev(graph->rev[graph->size++], parent);
5187 }
5188 }
5190 static chtype
5191 get_rev_graph_symbol(struct rev_graph *graph)
5192 {
5193 chtype symbol;
5195 if (graph->boundary)
5196 symbol = REVGRAPH_BOUND;
5197 else if (graph->parents->size == 0)
5198 symbol = REVGRAPH_INIT;
5199 else if (graph_parent_is_merge(graph))
5200 symbol = REVGRAPH_MERGE;
5201 else if (graph->pos >= graph->size)
5202 symbol = REVGRAPH_BRANCH;
5203 else
5204 symbol = REVGRAPH_COMMIT;
5206 return symbol;
5207 }
5209 static void
5210 draw_rev_graph(struct rev_graph *graph)
5211 {
5212 struct rev_filler {
5213 chtype separator, line;
5214 };
5215 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5216 static struct rev_filler fillers[] = {
5217 { ' ', '|' },
5218 { '`', '.' },
5219 { '\'', ' ' },
5220 { '/', ' ' },
5221 };
5222 chtype symbol = get_rev_graph_symbol(graph);
5223 struct rev_filler *filler;
5224 size_t i;
5226 if (opt_line_graphics)
5227 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5229 filler = &fillers[DEFAULT];
5231 for (i = 0; i < graph->pos; i++) {
5232 append_to_rev_graph(graph, filler->line);
5233 if (graph_parent_is_merge(graph->prev) &&
5234 graph->prev->pos == i)
5235 filler = &fillers[RSHARP];
5237 append_to_rev_graph(graph, filler->separator);
5238 }
5240 /* Place the symbol for this revision. */
5241 append_to_rev_graph(graph, symbol);
5243 if (graph->prev->size > graph->size)
5244 filler = &fillers[RDIAG];
5245 else
5246 filler = &fillers[DEFAULT];
5248 i++;
5250 for (; i < graph->size; i++) {
5251 append_to_rev_graph(graph, filler->separator);
5252 append_to_rev_graph(graph, filler->line);
5253 if (graph_parent_is_merge(graph->prev) &&
5254 i < graph->prev->pos + graph->parents->size)
5255 filler = &fillers[RSHARP];
5256 if (graph->prev->size > graph->size)
5257 filler = &fillers[LDIAG];
5258 }
5260 if (graph->prev->size > graph->size) {
5261 append_to_rev_graph(graph, filler->separator);
5262 if (filler->line != ' ')
5263 append_to_rev_graph(graph, filler->line);
5264 }
5265 }
5267 /* Prepare the next rev graph */
5268 static void
5269 prepare_rev_graph(struct rev_graph *graph)
5270 {
5271 size_t i;
5273 /* First, traverse all lines of revisions up to the active one. */
5274 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5275 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5276 break;
5278 push_rev_graph(graph->next, graph->rev[graph->pos]);
5279 }
5281 /* Interleave the new revision parent(s). */
5282 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5283 push_rev_graph(graph->next, graph->parents->rev[i]);
5285 /* Lastly, put any remaining revisions. */
5286 for (i = graph->pos + 1; i < graph->size; i++)
5287 push_rev_graph(graph->next, graph->rev[i]);
5288 }
5290 static void
5291 update_rev_graph(struct view *view, struct rev_graph *graph)
5292 {
5293 /* If this is the finalizing update ... */
5294 if (graph->commit)
5295 prepare_rev_graph(graph);
5297 /* Graph visualization needs a one rev look-ahead,
5298 * so the first update doesn't visualize anything. */
5299 if (!graph->prev->commit)
5300 return;
5302 if (view->lines > 2)
5303 view->line[view->lines - 3].dirty = 1;
5304 if (view->lines > 1)
5305 view->line[view->lines - 2].dirty = 1;
5306 draw_rev_graph(graph->prev);
5307 done_rev_graph(graph->prev->prev);
5308 }
5311 /*
5312 * Main view backend
5313 */
5315 static const char *main_argv[SIZEOF_ARG] = {
5316 "git", "log", "--no-color", "--pretty=raw", "--parents",
5317 "--topo-order", "%(head)", NULL
5318 };
5320 static bool
5321 main_draw(struct view *view, struct line *line, unsigned int lineno)
5322 {
5323 struct commit *commit = line->data;
5325 if (!*commit->author)
5326 return FALSE;
5328 if (opt_date && draw_date(view, &commit->time))
5329 return TRUE;
5331 if (opt_author &&
5332 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5333 return TRUE;
5335 if (opt_rev_graph && commit->graph_size &&
5336 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5337 return TRUE;
5339 if (opt_show_refs && commit->refs) {
5340 size_t i = 0;
5342 do {
5343 enum line_type type;
5345 if (commit->refs[i]->head)
5346 type = LINE_MAIN_HEAD;
5347 else if (commit->refs[i]->ltag)
5348 type = LINE_MAIN_LOCAL_TAG;
5349 else if (commit->refs[i]->tag)
5350 type = LINE_MAIN_TAG;
5351 else if (commit->refs[i]->tracked)
5352 type = LINE_MAIN_TRACKED;
5353 else if (commit->refs[i]->remote)
5354 type = LINE_MAIN_REMOTE;
5355 else
5356 type = LINE_MAIN_REF;
5358 if (draw_text(view, type, "[", TRUE) ||
5359 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5360 draw_text(view, type, "]", TRUE))
5361 return TRUE;
5363 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5364 return TRUE;
5365 } while (commit->refs[i++]->next);
5366 }
5368 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5369 return TRUE;
5370 }
5372 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5373 static bool
5374 main_read(struct view *view, char *line)
5375 {
5376 static struct rev_graph *graph = graph_stacks;
5377 enum line_type type;
5378 struct commit *commit;
5380 if (!line) {
5381 int i;
5383 if (!view->lines && !view->parent)
5384 die("No revisions match the given arguments.");
5385 if (view->lines > 0) {
5386 commit = view->line[view->lines - 1].data;
5387 view->line[view->lines - 1].dirty = 1;
5388 if (!*commit->author) {
5389 view->lines--;
5390 free(commit);
5391 graph->commit = NULL;
5392 }
5393 }
5394 update_rev_graph(view, graph);
5396 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5397 clear_rev_graph(&graph_stacks[i]);
5398 return TRUE;
5399 }
5401 type = get_line_type(line);
5402 if (type == LINE_COMMIT) {
5403 commit = calloc(1, sizeof(struct commit));
5404 if (!commit)
5405 return FALSE;
5407 line += STRING_SIZE("commit ");
5408 if (*line == '-') {
5409 graph->boundary = 1;
5410 line++;
5411 }
5413 string_copy_rev(commit->id, line);
5414 commit->refs = get_refs(commit->id);
5415 graph->commit = commit;
5416 add_line_data(view, commit, LINE_MAIN_COMMIT);
5418 while ((line = strchr(line, ' '))) {
5419 line++;
5420 push_rev_graph(graph->parents, line);
5421 commit->has_parents = TRUE;
5422 }
5423 return TRUE;
5424 }
5426 if (!view->lines)
5427 return TRUE;
5428 commit = view->line[view->lines - 1].data;
5430 switch (type) {
5431 case LINE_PARENT:
5432 if (commit->has_parents)
5433 break;
5434 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5435 break;
5437 case LINE_AUTHOR:
5438 {
5439 /* Parse author lines where the name may be empty:
5440 * author <email@address.tld> 1138474660 +0100
5441 */
5442 char *ident = line + STRING_SIZE("author ");
5443 char *nameend = strchr(ident, '<');
5444 char *emailend = strchr(ident, '>');
5446 if (!nameend || !emailend)
5447 break;
5449 update_rev_graph(view, graph);
5450 graph = graph->next;
5452 *nameend = *emailend = 0;
5453 ident = chomp_string(ident);
5454 if (!*ident) {
5455 ident = chomp_string(nameend + 1);
5456 if (!*ident)
5457 ident = "Unknown";
5458 }
5460 string_ncopy(commit->author, ident, strlen(ident));
5461 view->line[view->lines - 1].dirty = 1;
5463 /* Parse epoch and timezone */
5464 if (emailend[1] == ' ') {
5465 char *secs = emailend + 2;
5466 char *zone = strchr(secs, ' ');
5467 time_t time = (time_t) atol(secs);
5469 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5470 long tz;
5472 zone++;
5473 tz = ('0' - zone[1]) * 60 * 60 * 10;
5474 tz += ('0' - zone[2]) * 60 * 60;
5475 tz += ('0' - zone[3]) * 60;
5476 tz += ('0' - zone[4]) * 60;
5478 if (zone[0] == '-')
5479 tz = -tz;
5481 time -= tz;
5482 }
5484 gmtime_r(&time, &commit->time);
5485 }
5486 break;
5487 }
5488 default:
5489 /* Fill in the commit title if it has not already been set. */
5490 if (commit->title[0])
5491 break;
5493 /* Require titles to start with a non-space character at the
5494 * offset used by git log. */
5495 if (strncmp(line, " ", 4))
5496 break;
5497 line += 4;
5498 /* Well, if the title starts with a whitespace character,
5499 * try to be forgiving. Otherwise we end up with no title. */
5500 while (isspace(*line))
5501 line++;
5502 if (*line == '\0')
5503 break;
5504 /* FIXME: More graceful handling of titles; append "..." to
5505 * shortened titles, etc. */
5507 string_ncopy(commit->title, line, strlen(line));
5508 view->line[view->lines - 1].dirty = 1;
5509 }
5511 return TRUE;
5512 }
5514 static enum request
5515 main_request(struct view *view, enum request request, struct line *line)
5516 {
5517 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5519 switch (request) {
5520 case REQ_ENTER:
5521 open_view(view, REQ_VIEW_DIFF, flags);
5522 break;
5523 case REQ_REFRESH:
5524 load_refs();
5525 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5526 break;
5527 default:
5528 return request;
5529 }
5531 return REQ_NONE;
5532 }
5534 static bool
5535 grep_refs(struct ref **refs, regex_t *regex)
5536 {
5537 regmatch_t pmatch;
5538 size_t i = 0;
5540 if (!refs)
5541 return FALSE;
5542 do {
5543 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5544 return TRUE;
5545 } while (refs[i++]->next);
5547 return FALSE;
5548 }
5550 static bool
5551 main_grep(struct view *view, struct line *line)
5552 {
5553 struct commit *commit = line->data;
5554 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5555 char buf[DATE_COLS + 1];
5556 regmatch_t pmatch;
5558 for (state = S_TITLE; state < S_END; state++) {
5559 char *text;
5561 switch (state) {
5562 case S_TITLE: text = commit->title; break;
5563 case S_AUTHOR:
5564 if (!opt_author)
5565 continue;
5566 text = commit->author;
5567 break;
5568 case S_DATE:
5569 if (!opt_date)
5570 continue;
5571 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5572 continue;
5573 text = buf;
5574 break;
5575 case S_REFS:
5576 if (!opt_show_refs)
5577 continue;
5578 if (grep_refs(commit->refs, view->regex) == TRUE)
5579 return TRUE;
5580 continue;
5581 default:
5582 return FALSE;
5583 }
5585 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5586 return TRUE;
5587 }
5589 return FALSE;
5590 }
5592 static void
5593 main_select(struct view *view, struct line *line)
5594 {
5595 struct commit *commit = line->data;
5597 string_copy_rev(view->ref, commit->id);
5598 string_copy_rev(ref_commit, view->ref);
5599 }
5601 static struct view_ops main_ops = {
5602 "commit",
5603 main_argv,
5604 NULL,
5605 main_read,
5606 main_draw,
5607 main_request,
5608 main_grep,
5609 main_select,
5610 };
5613 /*
5614 * Unicode / UTF-8 handling
5615 *
5616 * NOTE: Much of the following code for dealing with unicode is derived from
5617 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5618 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5619 */
5621 /* I've (over)annotated a lot of code snippets because I am not entirely
5622 * confident that the approach taken by this small UTF-8 interface is correct.
5623 * --jonas */
5625 static inline int
5626 unicode_width(unsigned long c)
5627 {
5628 if (c >= 0x1100 &&
5629 (c <= 0x115f /* Hangul Jamo */
5630 || c == 0x2329
5631 || c == 0x232a
5632 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5633 /* CJK ... Yi */
5634 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5635 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5636 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5637 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5638 || (c >= 0xffe0 && c <= 0xffe6)
5639 || (c >= 0x20000 && c <= 0x2fffd)
5640 || (c >= 0x30000 && c <= 0x3fffd)))
5641 return 2;
5643 if (c == '\t')
5644 return opt_tab_size;
5646 return 1;
5647 }
5649 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5650 * Illegal bytes are set one. */
5651 static const unsigned char utf8_bytes[256] = {
5652 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,
5653 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,
5654 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,
5655 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,
5656 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,
5657 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,
5658 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,
5659 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,
5660 };
5662 /* Decode UTF-8 multi-byte representation into a unicode character. */
5663 static inline unsigned long
5664 utf8_to_unicode(const char *string, size_t length)
5665 {
5666 unsigned long unicode;
5668 switch (length) {
5669 case 1:
5670 unicode = string[0];
5671 break;
5672 case 2:
5673 unicode = (string[0] & 0x1f) << 6;
5674 unicode += (string[1] & 0x3f);
5675 break;
5676 case 3:
5677 unicode = (string[0] & 0x0f) << 12;
5678 unicode += ((string[1] & 0x3f) << 6);
5679 unicode += (string[2] & 0x3f);
5680 break;
5681 case 4:
5682 unicode = (string[0] & 0x0f) << 18;
5683 unicode += ((string[1] & 0x3f) << 12);
5684 unicode += ((string[2] & 0x3f) << 6);
5685 unicode += (string[3] & 0x3f);
5686 break;
5687 case 5:
5688 unicode = (string[0] & 0x0f) << 24;
5689 unicode += ((string[1] & 0x3f) << 18);
5690 unicode += ((string[2] & 0x3f) << 12);
5691 unicode += ((string[3] & 0x3f) << 6);
5692 unicode += (string[4] & 0x3f);
5693 break;
5694 case 6:
5695 unicode = (string[0] & 0x01) << 30;
5696 unicode += ((string[1] & 0x3f) << 24);
5697 unicode += ((string[2] & 0x3f) << 18);
5698 unicode += ((string[3] & 0x3f) << 12);
5699 unicode += ((string[4] & 0x3f) << 6);
5700 unicode += (string[5] & 0x3f);
5701 break;
5702 default:
5703 die("Invalid unicode length");
5704 }
5706 /* Invalid characters could return the special 0xfffd value but NUL
5707 * should be just as good. */
5708 return unicode > 0xffff ? 0 : unicode;
5709 }
5711 /* Calculates how much of string can be shown within the given maximum width
5712 * and sets trimmed parameter to non-zero value if all of string could not be
5713 * shown. If the reserve flag is TRUE, it will reserve at least one
5714 * trailing character, which can be useful when drawing a delimiter.
5715 *
5716 * Returns the number of bytes to output from string to satisfy max_width. */
5717 static size_t
5718 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5719 {
5720 const char *start = string;
5721 const char *end = strchr(string, '\0');
5722 unsigned char last_bytes = 0;
5723 size_t last_ucwidth = 0;
5725 *width = 0;
5726 *trimmed = 0;
5728 while (string < end) {
5729 int c = *(unsigned char *) string;
5730 unsigned char bytes = utf8_bytes[c];
5731 size_t ucwidth;
5732 unsigned long unicode;
5734 if (string + bytes > end)
5735 break;
5737 /* Change representation to figure out whether
5738 * it is a single- or double-width character. */
5740 unicode = utf8_to_unicode(string, bytes);
5741 /* FIXME: Graceful handling of invalid unicode character. */
5742 if (!unicode)
5743 break;
5745 ucwidth = unicode_width(unicode);
5746 *width += ucwidth;
5747 if (*width > max_width) {
5748 *trimmed = 1;
5749 *width -= ucwidth;
5750 if (reserve && *width == max_width) {
5751 string -= last_bytes;
5752 *width -= last_ucwidth;
5753 }
5754 break;
5755 }
5757 string += bytes;
5758 last_bytes = bytes;
5759 last_ucwidth = ucwidth;
5760 }
5762 return string - start;
5763 }
5766 /*
5767 * Status management
5768 */
5770 /* Whether or not the curses interface has been initialized. */
5771 static bool cursed = FALSE;
5773 /* The status window is used for polling keystrokes. */
5774 static WINDOW *status_win;
5776 static bool status_empty = TRUE;
5778 /* Update status and title window. */
5779 static void
5780 report(const char *msg, ...)
5781 {
5782 struct view *view = display[current_view];
5784 if (input_mode)
5785 return;
5787 if (!view) {
5788 char buf[SIZEOF_STR];
5789 va_list args;
5791 va_start(args, msg);
5792 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5793 buf[sizeof(buf) - 1] = 0;
5794 buf[sizeof(buf) - 2] = '.';
5795 buf[sizeof(buf) - 3] = '.';
5796 buf[sizeof(buf) - 4] = '.';
5797 }
5798 va_end(args);
5799 die("%s", buf);
5800 }
5802 if (!status_empty || *msg) {
5803 va_list args;
5805 va_start(args, msg);
5807 wmove(status_win, 0, 0);
5808 if (*msg) {
5809 vwprintw(status_win, msg, args);
5810 status_empty = FALSE;
5811 } else {
5812 status_empty = TRUE;
5813 }
5814 wclrtoeol(status_win);
5815 wrefresh(status_win);
5817 va_end(args);
5818 }
5820 update_view_title(view);
5821 update_display_cursor(view);
5822 }
5824 /* Controls when nodelay should be in effect when polling user input. */
5825 static void
5826 set_nonblocking_input(bool loading)
5827 {
5828 static unsigned int loading_views;
5830 if ((loading == FALSE && loading_views-- == 1) ||
5831 (loading == TRUE && loading_views++ == 0))
5832 nodelay(status_win, loading);
5833 }
5835 static void
5836 init_display(void)
5837 {
5838 int x, y;
5840 /* Initialize the curses library */
5841 if (isatty(STDIN_FILENO)) {
5842 cursed = !!initscr();
5843 opt_tty = stdin;
5844 } else {
5845 /* Leave stdin and stdout alone when acting as a pager. */
5846 opt_tty = fopen("/dev/tty", "r+");
5847 if (!opt_tty)
5848 die("Failed to open /dev/tty");
5849 cursed = !!newterm(NULL, opt_tty, opt_tty);
5850 }
5852 if (!cursed)
5853 die("Failed to initialize curses");
5855 nonl(); /* Tell curses not to do NL->CR/NL on output */
5856 cbreak(); /* Take input chars one at a time, no wait for \n */
5857 noecho(); /* Don't echo input */
5858 leaveok(stdscr, TRUE);
5860 if (has_colors())
5861 init_colors();
5863 getmaxyx(stdscr, y, x);
5864 status_win = newwin(1, 0, y - 1, 0);
5865 if (!status_win)
5866 die("Failed to create status window");
5868 /* Enable keyboard mapping */
5869 keypad(status_win, TRUE);
5870 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5872 TABSIZE = opt_tab_size;
5873 if (opt_line_graphics) {
5874 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5875 }
5876 }
5878 static bool
5879 prompt_yesno(const char *prompt)
5880 {
5881 enum { WAIT, STOP, CANCEL } status = WAIT;
5882 bool answer = FALSE;
5884 while (status == WAIT) {
5885 struct view *view;
5886 int i, key;
5888 input_mode = TRUE;
5890 foreach_view (view, i)
5891 update_view(view);
5893 input_mode = FALSE;
5895 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
5896 wclrtoeol(status_win);
5898 /* Refresh, accept single keystroke of input */
5899 key = wgetch(status_win);
5900 switch (key) {
5901 case ERR:
5902 break;
5904 case 'y':
5905 case 'Y':
5906 answer = TRUE;
5907 status = STOP;
5908 break;
5910 case KEY_ESC:
5911 case KEY_RETURN:
5912 case KEY_ENTER:
5913 case KEY_BACKSPACE:
5914 case 'n':
5915 case 'N':
5916 case '\n':
5917 default:
5918 answer = FALSE;
5919 status = CANCEL;
5920 }
5921 }
5923 /* Clear the status window */
5924 status_empty = FALSE;
5925 report("");
5927 return answer;
5928 }
5930 static char *
5931 read_prompt(const char *prompt)
5932 {
5933 enum { READING, STOP, CANCEL } status = READING;
5934 static char buf[SIZEOF_STR];
5935 int pos = 0;
5937 while (status == READING) {
5938 struct view *view;
5939 int i, key;
5941 input_mode = TRUE;
5943 foreach_view (view, i)
5944 update_view(view);
5946 input_mode = FALSE;
5948 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5949 wclrtoeol(status_win);
5951 /* Refresh, accept single keystroke of input */
5952 key = wgetch(status_win);
5953 switch (key) {
5954 case KEY_RETURN:
5955 case KEY_ENTER:
5956 case '\n':
5957 status = pos ? STOP : CANCEL;
5958 break;
5960 case KEY_BACKSPACE:
5961 if (pos > 0)
5962 pos--;
5963 else
5964 status = CANCEL;
5965 break;
5967 case KEY_ESC:
5968 status = CANCEL;
5969 break;
5971 case ERR:
5972 break;
5974 default:
5975 if (pos >= sizeof(buf)) {
5976 report("Input string too long");
5977 return NULL;
5978 }
5980 if (isprint(key))
5981 buf[pos++] = (char) key;
5982 }
5983 }
5985 /* Clear the status window */
5986 status_empty = FALSE;
5987 report("");
5989 if (status == CANCEL)
5990 return NULL;
5992 buf[pos++] = 0;
5994 return buf;
5995 }
5997 /*
5998 * Repository properties
5999 */
6001 static int
6002 git_properties(const char **argv, const char *separators,
6003 int (*read_property)(char *, size_t, char *, size_t))
6004 {
6005 struct io io = {};
6007 if (init_io_rd(&io, argv, NULL, FORMAT_NONE))
6008 return read_properties(&io, separators, read_property);
6009 return ERR;
6010 }
6012 static struct ref *refs = NULL;
6013 static size_t refs_alloc = 0;
6014 static size_t refs_size = 0;
6016 /* Id <-> ref store */
6017 static struct ref ***id_refs = NULL;
6018 static size_t id_refs_alloc = 0;
6019 static size_t id_refs_size = 0;
6021 static int
6022 compare_refs(const void *ref1_, const void *ref2_)
6023 {
6024 const struct ref *ref1 = *(const struct ref **)ref1_;
6025 const struct ref *ref2 = *(const struct ref **)ref2_;
6027 if (ref1->tag != ref2->tag)
6028 return ref2->tag - ref1->tag;
6029 if (ref1->ltag != ref2->ltag)
6030 return ref2->ltag - ref2->ltag;
6031 if (ref1->head != ref2->head)
6032 return ref2->head - ref1->head;
6033 if (ref1->tracked != ref2->tracked)
6034 return ref2->tracked - ref1->tracked;
6035 if (ref1->remote != ref2->remote)
6036 return ref2->remote - ref1->remote;
6037 return strcmp(ref1->name, ref2->name);
6038 }
6040 static struct ref **
6041 get_refs(const char *id)
6042 {
6043 struct ref ***tmp_id_refs;
6044 struct ref **ref_list = NULL;
6045 size_t ref_list_alloc = 0;
6046 size_t ref_list_size = 0;
6047 size_t i;
6049 for (i = 0; i < id_refs_size; i++)
6050 if (!strcmp(id, id_refs[i][0]->id))
6051 return id_refs[i];
6053 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6054 sizeof(*id_refs));
6055 if (!tmp_id_refs)
6056 return NULL;
6058 id_refs = tmp_id_refs;
6060 for (i = 0; i < refs_size; i++) {
6061 struct ref **tmp;
6063 if (strcmp(id, refs[i].id))
6064 continue;
6066 tmp = realloc_items(ref_list, &ref_list_alloc,
6067 ref_list_size + 1, sizeof(*ref_list));
6068 if (!tmp) {
6069 if (ref_list)
6070 free(ref_list);
6071 return NULL;
6072 }
6074 ref_list = tmp;
6075 ref_list[ref_list_size] = &refs[i];
6076 /* XXX: The properties of the commit chains ensures that we can
6077 * safely modify the shared ref. The repo references will
6078 * always be similar for the same id. */
6079 ref_list[ref_list_size]->next = 1;
6081 ref_list_size++;
6082 }
6084 if (ref_list) {
6085 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6086 ref_list[ref_list_size - 1]->next = 0;
6087 id_refs[id_refs_size++] = ref_list;
6088 }
6090 return ref_list;
6091 }
6093 static int
6094 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6095 {
6096 struct ref *ref;
6097 bool tag = FALSE;
6098 bool ltag = FALSE;
6099 bool remote = FALSE;
6100 bool tracked = FALSE;
6101 bool check_replace = FALSE;
6102 bool head = FALSE;
6104 if (!prefixcmp(name, "refs/tags/")) {
6105 if (!suffixcmp(name, namelen, "^{}")) {
6106 namelen -= 3;
6107 name[namelen] = 0;
6108 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6109 check_replace = TRUE;
6110 } else {
6111 ltag = TRUE;
6112 }
6114 tag = TRUE;
6115 namelen -= STRING_SIZE("refs/tags/");
6116 name += STRING_SIZE("refs/tags/");
6118 } else if (!prefixcmp(name, "refs/remotes/")) {
6119 remote = TRUE;
6120 namelen -= STRING_SIZE("refs/remotes/");
6121 name += STRING_SIZE("refs/remotes/");
6122 tracked = !strcmp(opt_remote, name);
6124 } else if (!prefixcmp(name, "refs/heads/")) {
6125 namelen -= STRING_SIZE("refs/heads/");
6126 name += STRING_SIZE("refs/heads/");
6127 head = !strncmp(opt_head, name, namelen);
6129 } else if (!strcmp(name, "HEAD")) {
6130 string_ncopy(opt_head_rev, id, idlen);
6131 return OK;
6132 }
6134 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6135 /* it's an annotated tag, replace the previous sha1 with the
6136 * resolved commit id; relies on the fact git-ls-remote lists
6137 * the commit id of an annotated tag right before the commit id
6138 * it points to. */
6139 refs[refs_size - 1].ltag = ltag;
6140 string_copy_rev(refs[refs_size - 1].id, id);
6142 return OK;
6143 }
6144 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6145 if (!refs)
6146 return ERR;
6148 ref = &refs[refs_size++];
6149 ref->name = malloc(namelen + 1);
6150 if (!ref->name)
6151 return ERR;
6153 strncpy(ref->name, name, namelen);
6154 ref->name[namelen] = 0;
6155 ref->head = head;
6156 ref->tag = tag;
6157 ref->ltag = ltag;
6158 ref->remote = remote;
6159 ref->tracked = tracked;
6160 string_copy_rev(ref->id, id);
6162 return OK;
6163 }
6165 static int
6166 load_refs(void)
6167 {
6168 static const char *ls_remote_argv[SIZEOF_ARG] = {
6169 "git", "ls-remote", ".", NULL
6170 };
6171 static bool init = FALSE;
6173 if (!init) {
6174 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6175 init = TRUE;
6176 }
6178 if (!*opt_git_dir)
6179 return OK;
6181 while (refs_size > 0)
6182 free(refs[--refs_size].name);
6183 while (id_refs_size > 0)
6184 free(id_refs[--id_refs_size]);
6186 return git_properties(ls_remote_argv, "\t", read_ref);
6187 }
6189 static int
6190 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6191 {
6192 if (!strcmp(name, "i18n.commitencoding"))
6193 string_ncopy(opt_encoding, value, valuelen);
6195 if (!strcmp(name, "core.editor"))
6196 string_ncopy(opt_editor, value, valuelen);
6198 /* branch.<head>.remote */
6199 if (*opt_head &&
6200 !strncmp(name, "branch.", 7) &&
6201 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6202 !strcmp(name + 7 + strlen(opt_head), ".remote"))
6203 string_ncopy(opt_remote, value, valuelen);
6205 if (*opt_head && *opt_remote &&
6206 !strncmp(name, "branch.", 7) &&
6207 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6208 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
6209 size_t from = strlen(opt_remote);
6211 if (!prefixcmp(value, "refs/heads/")) {
6212 value += STRING_SIZE("refs/heads/");
6213 valuelen -= STRING_SIZE("refs/heads/");
6214 }
6216 if (!string_format_from(opt_remote, &from, "/%s", value))
6217 opt_remote[0] = 0;
6218 }
6220 return OK;
6221 }
6223 static int
6224 load_git_config(void)
6225 {
6226 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6228 return git_properties(config_list_argv, "=", read_repo_config_option);
6229 }
6231 static int
6232 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6233 {
6234 if (!opt_git_dir[0]) {
6235 string_ncopy(opt_git_dir, name, namelen);
6237 } else if (opt_is_inside_work_tree == -1) {
6238 /* This can be 3 different values depending on the
6239 * version of git being used. If git-rev-parse does not
6240 * understand --is-inside-work-tree it will simply echo
6241 * the option else either "true" or "false" is printed.
6242 * Default to true for the unknown case. */
6243 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6244 } else {
6245 string_ncopy(opt_cdup, name, namelen);
6246 }
6248 return OK;
6249 }
6251 static int
6252 load_repo_info(void)
6253 {
6254 const char *head_argv[] = {
6255 "git", "symbolic-ref", "HEAD", NULL
6256 };
6257 const char *rev_parse_argv[] = {
6258 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6259 "--show-cdup", NULL
6260 };
6262 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6263 chomp_string(opt_head);
6264 if (!prefixcmp(opt_head, "refs/heads/")) {
6265 char *offset = opt_head + STRING_SIZE("refs/heads/");
6267 memmove(opt_head, offset, strlen(offset) + 1);
6268 }
6269 }
6271 return git_properties(rev_parse_argv, "=", read_repo_info);
6272 }
6274 static int
6275 read_properties(struct io *io, const char *separators,
6276 int (*read_property)(char *, size_t, char *, size_t))
6277 {
6278 char *name;
6279 int state = OK;
6281 if (!start_io(io))
6282 return ERR;
6284 while (state == OK && (name = io_get(io, '\n', TRUE))) {
6285 char *value;
6286 size_t namelen;
6287 size_t valuelen;
6289 name = chomp_string(name);
6290 namelen = strcspn(name, separators);
6292 if (name[namelen]) {
6293 name[namelen] = 0;
6294 value = chomp_string(name + namelen + 1);
6295 valuelen = strlen(value);
6297 } else {
6298 value = "";
6299 valuelen = 0;
6300 }
6302 state = read_property(name, namelen, value, valuelen);
6303 }
6305 if (state != ERR && io_error(io))
6306 state = ERR;
6307 done_io(io);
6309 return state;
6310 }
6313 /*
6314 * Main
6315 */
6317 static void __NORETURN
6318 quit(int sig)
6319 {
6320 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6321 if (cursed)
6322 endwin();
6323 exit(0);
6324 }
6326 static void __NORETURN
6327 die(const char *err, ...)
6328 {
6329 va_list args;
6331 endwin();
6333 va_start(args, err);
6334 fputs("tig: ", stderr);
6335 vfprintf(stderr, err, args);
6336 fputs("\n", stderr);
6337 va_end(args);
6339 exit(1);
6340 }
6342 static void
6343 warn(const char *msg, ...)
6344 {
6345 va_list args;
6347 va_start(args, msg);
6348 fputs("tig warning: ", stderr);
6349 vfprintf(stderr, msg, args);
6350 fputs("\n", stderr);
6351 va_end(args);
6352 }
6354 int
6355 main(int argc, const char *argv[])
6356 {
6357 const char **run_argv = NULL;
6358 struct view *view;
6359 enum request request;
6360 size_t i;
6362 signal(SIGINT, quit);
6364 if (setlocale(LC_ALL, "")) {
6365 char *codeset = nl_langinfo(CODESET);
6367 string_ncopy(opt_codeset, codeset, strlen(codeset));
6368 }
6370 if (load_repo_info() == ERR)
6371 die("Failed to load repo info.");
6373 if (load_options() == ERR)
6374 die("Failed to load user config.");
6376 if (load_git_config() == ERR)
6377 die("Failed to load repo config.");
6379 request = parse_options(argc, argv, &run_argv);
6380 if (request == REQ_NONE)
6381 return 0;
6383 /* Require a git repository unless when running in pager mode. */
6384 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6385 die("Not a git repository");
6387 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6388 opt_utf8 = FALSE;
6390 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6391 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6392 if (opt_iconv == ICONV_NONE)
6393 die("Failed to initialize character set conversion");
6394 }
6396 if (load_refs() == ERR)
6397 die("Failed to load refs.");
6399 foreach_view (view, i)
6400 argv_from_env(view->ops->argv, view->cmd_env);
6402 init_display();
6404 if (request == REQ_VIEW_PAGER || run_argv) {
6405 if (request == REQ_VIEW_PAGER)
6406 io_open(&VIEW(request)->io, "");
6407 else if (!prepare_update(VIEW(request), run_argv, NULL, FORMAT_NONE))
6408 die("Failed to format arguments");
6409 open_view(NULL, request, OPEN_PREPARED);
6410 request = REQ_NONE;
6411 }
6413 while (view_driver(display[current_view], request)) {
6414 int key;
6415 int i;
6417 foreach_view (view, i)
6418 update_view(view);
6419 view = display[current_view];
6421 /* Refresh, accept single keystroke of input */
6422 key = wgetch(status_win);
6424 /* wgetch() with nodelay() enabled returns ERR when there's no
6425 * input. */
6426 if (key == ERR) {
6427 request = REQ_NONE;
6428 continue;
6429 }
6431 request = get_keybinding(view->keymap, key);
6433 /* Some low-level request handling. This keeps access to
6434 * status_win restricted. */
6435 switch (request) {
6436 case REQ_PROMPT:
6437 {
6438 char *cmd = read_prompt(":");
6440 if (cmd) {
6441 struct view *next = VIEW(REQ_VIEW_PAGER);
6442 const char *argv[SIZEOF_ARG] = { "git" };
6443 int argc = 1;
6445 /* When running random commands, initially show the
6446 * command in the title. However, it maybe later be
6447 * overwritten if a commit line is selected. */
6448 string_ncopy(next->ref, cmd, strlen(cmd));
6450 if (!argv_from_string(argv, &argc, cmd)) {
6451 report("Too many arguments");
6452 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
6453 report("Failed to format command");
6454 } else {
6455 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6456 }
6457 }
6459 request = REQ_NONE;
6460 break;
6461 }
6462 case REQ_SEARCH:
6463 case REQ_SEARCH_BACK:
6464 {
6465 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6466 char *search = read_prompt(prompt);
6468 if (search)
6469 string_ncopy(opt_search, search, strlen(search));
6470 else
6471 request = REQ_NONE;
6472 break;
6473 }
6474 case REQ_SCREEN_RESIZE:
6475 {
6476 int height, width;
6478 getmaxyx(stdscr, height, width);
6480 /* Resize the status view and let the view driver take
6481 * care of resizing the displayed views. */
6482 wresize(status_win, 1, width);
6483 mvwin(status_win, height - 1, 0);
6484 wrefresh(status_win);
6485 break;
6486 }
6487 default:
6488 break;
6489 }
6490 }
6492 quit(0);
6494 return 0;
6495 }