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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 static void
2195 toggle_view_option(bool *option, const char *help)
2196 {
2197 *option = !*option;
2198 redraw_display();
2199 report("%sabling %s", *option ? "En" : "Dis", help);
2200 }
2202 /*
2203 * Navigation
2204 */
2206 /* Scrolling backend */
2207 static void
2208 do_scroll_view(struct view *view, int lines)
2209 {
2210 bool redraw_current_line = FALSE;
2212 /* The rendering expects the new offset. */
2213 view->offset += lines;
2215 assert(0 <= view->offset && view->offset < view->lines);
2216 assert(lines);
2218 /* Move current line into the view. */
2219 if (view->lineno < view->offset) {
2220 view->lineno = view->offset;
2221 redraw_current_line = TRUE;
2222 } else if (view->lineno >= view->offset + view->height) {
2223 view->lineno = view->offset + view->height - 1;
2224 redraw_current_line = TRUE;
2225 }
2227 assert(view->offset <= view->lineno && view->lineno < view->lines);
2229 /* Redraw the whole screen if scrolling is pointless. */
2230 if (view->height < ABS(lines)) {
2231 redraw_view(view);
2233 } else {
2234 int line = lines > 0 ? view->height - lines : 0;
2235 int end = line + ABS(lines);
2237 wscrl(view->win, lines);
2239 for (; line < end; line++) {
2240 if (!draw_view_line(view, line))
2241 break;
2242 }
2244 if (redraw_current_line)
2245 draw_view_line(view, view->lineno - view->offset);
2246 }
2248 redrawwin(view->win);
2249 wrefresh(view->win);
2250 report("");
2251 }
2253 /* Scroll frontend */
2254 static void
2255 scroll_view(struct view *view, enum request request)
2256 {
2257 int lines = 1;
2259 assert(view_is_displayed(view));
2261 switch (request) {
2262 case REQ_SCROLL_PAGE_DOWN:
2263 lines = view->height;
2264 case REQ_SCROLL_LINE_DOWN:
2265 if (view->offset + lines > view->lines)
2266 lines = view->lines - view->offset;
2268 if (lines == 0 || view->offset + view->height >= view->lines) {
2269 report("Cannot scroll beyond the last line");
2270 return;
2271 }
2272 break;
2274 case REQ_SCROLL_PAGE_UP:
2275 lines = view->height;
2276 case REQ_SCROLL_LINE_UP:
2277 if (lines > view->offset)
2278 lines = view->offset;
2280 if (lines == 0) {
2281 report("Cannot scroll beyond the first line");
2282 return;
2283 }
2285 lines = -lines;
2286 break;
2288 default:
2289 die("request %d not handled in switch", request);
2290 }
2292 do_scroll_view(view, lines);
2293 }
2295 /* Cursor moving */
2296 static void
2297 move_view(struct view *view, enum request request)
2298 {
2299 int scroll_steps = 0;
2300 int steps;
2302 switch (request) {
2303 case REQ_MOVE_FIRST_LINE:
2304 steps = -view->lineno;
2305 break;
2307 case REQ_MOVE_LAST_LINE:
2308 steps = view->lines - view->lineno - 1;
2309 break;
2311 case REQ_MOVE_PAGE_UP:
2312 steps = view->height > view->lineno
2313 ? -view->lineno : -view->height;
2314 break;
2316 case REQ_MOVE_PAGE_DOWN:
2317 steps = view->lineno + view->height >= view->lines
2318 ? view->lines - view->lineno - 1 : view->height;
2319 break;
2321 case REQ_MOVE_UP:
2322 steps = -1;
2323 break;
2325 case REQ_MOVE_DOWN:
2326 steps = 1;
2327 break;
2329 default:
2330 die("request %d not handled in switch", request);
2331 }
2333 if (steps <= 0 && view->lineno == 0) {
2334 report("Cannot move beyond the first line");
2335 return;
2337 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2338 report("Cannot move beyond the last line");
2339 return;
2340 }
2342 /* Move the current line */
2343 view->lineno += steps;
2344 assert(0 <= view->lineno && view->lineno < view->lines);
2346 /* Check whether the view needs to be scrolled */
2347 if (view->lineno < view->offset ||
2348 view->lineno >= view->offset + view->height) {
2349 scroll_steps = steps;
2350 if (steps < 0 && -steps > view->offset) {
2351 scroll_steps = -view->offset;
2353 } else if (steps > 0) {
2354 if (view->lineno == view->lines - 1 &&
2355 view->lines > view->height) {
2356 scroll_steps = view->lines - view->offset - 1;
2357 if (scroll_steps >= view->height)
2358 scroll_steps -= view->height - 1;
2359 }
2360 }
2361 }
2363 if (!view_is_displayed(view)) {
2364 view->offset += scroll_steps;
2365 assert(0 <= view->offset && view->offset < view->lines);
2366 view->ops->select(view, &view->line[view->lineno]);
2367 return;
2368 }
2370 /* Repaint the old "current" line if we be scrolling */
2371 if (ABS(steps) < view->height)
2372 draw_view_line(view, view->lineno - steps - view->offset);
2374 if (scroll_steps) {
2375 do_scroll_view(view, scroll_steps);
2376 return;
2377 }
2379 /* Draw the current line */
2380 draw_view_line(view, view->lineno - view->offset);
2382 redrawwin(view->win);
2383 wrefresh(view->win);
2384 report("");
2385 }
2388 /*
2389 * Searching
2390 */
2392 static void search_view(struct view *view, enum request request);
2394 static bool
2395 find_next_line(struct view *view, unsigned long lineno, struct line *line)
2396 {
2397 assert(view_is_displayed(view));
2399 if (!view->ops->grep(view, line))
2400 return FALSE;
2402 if (lineno - view->offset >= view->height) {
2403 view->offset = lineno;
2404 view->lineno = lineno;
2405 redraw_view(view);
2407 } else {
2408 unsigned long old_lineno = view->lineno - view->offset;
2410 view->lineno = lineno;
2411 draw_view_line(view, old_lineno);
2413 draw_view_line(view, view->lineno - view->offset);
2414 redrawwin(view->win);
2415 wrefresh(view->win);
2416 }
2418 report("Line %ld matches '%s'", lineno + 1, view->grep);
2419 return TRUE;
2420 }
2422 static void
2423 find_next(struct view *view, enum request request)
2424 {
2425 unsigned long lineno = view->lineno;
2426 int direction;
2428 if (!*view->grep) {
2429 if (!*opt_search)
2430 report("No previous search");
2431 else
2432 search_view(view, request);
2433 return;
2434 }
2436 switch (request) {
2437 case REQ_SEARCH:
2438 case REQ_FIND_NEXT:
2439 direction = 1;
2440 break;
2442 case REQ_SEARCH_BACK:
2443 case REQ_FIND_PREV:
2444 direction = -1;
2445 break;
2447 default:
2448 return;
2449 }
2451 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2452 lineno += direction;
2454 /* Note, lineno is unsigned long so will wrap around in which case it
2455 * will become bigger than view->lines. */
2456 for (; lineno < view->lines; lineno += direction) {
2457 struct line *line = &view->line[lineno];
2459 if (find_next_line(view, lineno, line))
2460 return;
2461 }
2463 report("No match found for '%s'", view->grep);
2464 }
2466 static void
2467 search_view(struct view *view, enum request request)
2468 {
2469 int regex_err;
2471 if (view->regex) {
2472 regfree(view->regex);
2473 *view->grep = 0;
2474 } else {
2475 view->regex = calloc(1, sizeof(*view->regex));
2476 if (!view->regex)
2477 return;
2478 }
2480 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2481 if (regex_err != 0) {
2482 char buf[SIZEOF_STR] = "unknown error";
2484 regerror(regex_err, view->regex, buf, sizeof(buf));
2485 report("Search failed: %s", buf);
2486 return;
2487 }
2489 string_copy(view->grep, opt_search);
2491 find_next(view, request);
2492 }
2494 /*
2495 * Incremental updating
2496 */
2498 static void
2499 reset_view(struct view *view)
2500 {
2501 int i;
2503 for (i = 0; i < view->lines; i++)
2504 free(view->line[i].data);
2505 free(view->line);
2507 view->line = NULL;
2508 view->offset = 0;
2509 view->lines = 0;
2510 view->lineno = 0;
2511 view->line_alloc = 0;
2512 view->vid[0] = 0;
2513 view->update_secs = 0;
2514 }
2516 static void
2517 free_argv(const char *argv[])
2518 {
2519 int argc;
2521 for (argc = 0; argv[argc]; argc++)
2522 free((void *) argv[argc]);
2523 }
2525 static bool
2526 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2527 {
2528 char buf[SIZEOF_STR];
2529 int argc;
2530 bool noreplace = flags == FORMAT_NONE;
2532 free_argv(dst_argv);
2534 for (argc = 0; src_argv[argc]; argc++) {
2535 const char *arg = src_argv[argc];
2536 size_t bufpos = 0;
2538 while (arg) {
2539 char *next = strstr(arg, "%(");
2540 int len = next - arg;
2541 const char *value;
2543 if (!next || noreplace) {
2544 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2545 noreplace = TRUE;
2546 len = strlen(arg);
2547 value = "";
2549 } else if (!prefixcmp(next, "%(directory)")) {
2550 value = opt_path;
2552 } else if (!prefixcmp(next, "%(file)")) {
2553 value = opt_file;
2555 } else if (!prefixcmp(next, "%(ref)")) {
2556 value = *opt_ref ? opt_ref : "HEAD";
2558 } else if (!prefixcmp(next, "%(head)")) {
2559 value = ref_head;
2561 } else if (!prefixcmp(next, "%(commit)")) {
2562 value = ref_commit;
2564 } else if (!prefixcmp(next, "%(blob)")) {
2565 value = ref_blob;
2567 } else {
2568 report("Unknown replacement: `%s`", next);
2569 return FALSE;
2570 }
2572 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2573 return FALSE;
2575 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2576 }
2578 dst_argv[argc] = strdup(buf);
2579 if (!dst_argv[argc])
2580 break;
2581 }
2583 dst_argv[argc] = NULL;
2585 return src_argv[argc] == NULL;
2586 }
2588 static void
2589 end_update(struct view *view, bool force)
2590 {
2591 if (!view->pipe)
2592 return;
2593 while (!view->ops->read(view, NULL))
2594 if (!force)
2595 return;
2596 set_nonblocking_input(FALSE);
2597 if (force)
2598 kill_io(view->pipe);
2599 done_io(view->pipe);
2600 view->pipe = NULL;
2601 }
2603 static void
2604 setup_update(struct view *view, const char *vid)
2605 {
2606 set_nonblocking_input(TRUE);
2607 reset_view(view);
2608 string_copy_rev(view->vid, vid);
2609 view->pipe = &view->io;
2610 view->start_time = time(NULL);
2611 }
2613 static bool
2614 prepare_update(struct view *view, const char *argv[], const char *dir,
2615 enum format_flags flags)
2616 {
2617 if (view->pipe)
2618 end_update(view, TRUE);
2619 return init_io_rd(&view->io, argv, dir, flags);
2620 }
2622 static bool
2623 prepare_update_file(struct view *view, const char *name)
2624 {
2625 if (view->pipe)
2626 end_update(view, TRUE);
2627 return io_open(&view->io, name);
2628 }
2630 static bool
2631 begin_update(struct view *view, bool refresh)
2632 {
2633 if (view->pipe)
2634 end_update(view, TRUE);
2636 if (refresh) {
2637 if (!start_io(&view->io))
2638 return FALSE;
2640 } else {
2641 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2642 opt_path[0] = 0;
2644 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2645 return FALSE;
2647 /* Put the current ref_* value to the view title ref
2648 * member. This is needed by the blob view. Most other
2649 * views sets it automatically after loading because the
2650 * first line is a commit line. */
2651 string_copy_rev(view->ref, view->id);
2652 }
2654 setup_update(view, view->id);
2656 return TRUE;
2657 }
2659 #define ITEM_CHUNK_SIZE 256
2660 static void *
2661 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2662 {
2663 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2664 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2666 if (mem == NULL || num_chunks != num_chunks_new) {
2667 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2668 mem = realloc(mem, *size * item_size);
2669 }
2671 return mem;
2672 }
2674 static struct line *
2675 realloc_lines(struct view *view, size_t line_size)
2676 {
2677 size_t alloc = view->line_alloc;
2678 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2679 sizeof(*view->line));
2681 if (!tmp)
2682 return NULL;
2684 view->line = tmp;
2685 view->line_alloc = alloc;
2686 return view->line;
2687 }
2689 static bool
2690 update_view(struct view *view)
2691 {
2692 char out_buffer[BUFSIZ * 2];
2693 char *line;
2694 /* Clear the view and redraw everything since the tree sorting
2695 * might have rearranged things. */
2696 bool redraw = view->lines == 0;
2697 bool can_read = TRUE;
2699 if (!view->pipe)
2700 return TRUE;
2702 if (!io_can_read(view->pipe)) {
2703 if (view->lines == 0) {
2704 time_t secs = time(NULL) - view->start_time;
2706 if (secs > view->update_secs) {
2707 if (view->update_secs == 0)
2708 redraw_view(view);
2709 update_view_title(view);
2710 view->update_secs = secs;
2711 }
2712 }
2713 return TRUE;
2714 }
2716 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2717 if (opt_iconv != ICONV_NONE) {
2718 ICONV_CONST char *inbuf = line;
2719 size_t inlen = strlen(line) + 1;
2721 char *outbuf = out_buffer;
2722 size_t outlen = sizeof(out_buffer);
2724 size_t ret;
2726 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2727 if (ret != (size_t) -1)
2728 line = out_buffer;
2729 }
2731 if (!view->ops->read(view, line))
2732 goto alloc_error;
2733 }
2735 {
2736 unsigned long lines = view->lines;
2737 int digits;
2739 for (digits = 0; lines; digits++)
2740 lines /= 10;
2742 /* Keep the displayed view in sync with line number scaling. */
2743 if (digits != view->digits) {
2744 view->digits = digits;
2745 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2746 redraw = TRUE;
2747 }
2748 }
2750 if (io_error(view->pipe)) {
2751 report("Failed to read: %s", io_strerror(view->pipe));
2752 end_update(view, TRUE);
2754 } else if (io_eof(view->pipe)) {
2755 report("");
2756 end_update(view, FALSE);
2757 }
2759 if (!view_is_displayed(view))
2760 return TRUE;
2762 if (redraw)
2763 redraw_view_from(view, 0);
2764 else
2765 redraw_view_dirty(view);
2767 /* Update the title _after_ the redraw so that if the redraw picks up a
2768 * commit reference in view->ref it'll be available here. */
2769 update_view_title(view);
2770 return TRUE;
2772 alloc_error:
2773 report("Allocation failure");
2774 end_update(view, TRUE);
2775 return FALSE;
2776 }
2778 static struct line *
2779 add_line_data(struct view *view, void *data, enum line_type type)
2780 {
2781 struct line *line;
2783 if (!realloc_lines(view, view->lines + 1))
2784 return NULL;
2786 line = &view->line[view->lines++];
2787 memset(line, 0, sizeof(*line));
2788 line->type = type;
2789 line->data = data;
2790 line->dirty = 1;
2792 return line;
2793 }
2795 static struct line *
2796 add_line_text(struct view *view, const char *text, enum line_type type)
2797 {
2798 char *data = text ? strdup(text) : NULL;
2800 return data ? add_line_data(view, data, type) : NULL;
2801 }
2803 static struct line *
2804 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2805 {
2806 char buf[SIZEOF_STR];
2807 va_list args;
2809 va_start(args, fmt);
2810 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2811 buf[0] = 0;
2812 va_end(args);
2814 return buf[0] ? add_line_text(view, buf, type) : NULL;
2815 }
2817 /*
2818 * View opening
2819 */
2821 enum open_flags {
2822 OPEN_DEFAULT = 0, /* Use default view switching. */
2823 OPEN_SPLIT = 1, /* Split current view. */
2824 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2825 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2826 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2827 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2828 OPEN_PREPARED = 32, /* Open already prepared command. */
2829 };
2831 static void
2832 open_view(struct view *prev, enum request request, enum open_flags flags)
2833 {
2834 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2835 bool split = !!(flags & OPEN_SPLIT);
2836 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2837 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2838 struct view *view = VIEW(request);
2839 int nviews = displayed_views();
2840 struct view *base_view = display[0];
2842 if (view == prev && nviews == 1 && !reload) {
2843 report("Already in %s view", view->name);
2844 return;
2845 }
2847 if (view->git_dir && !opt_git_dir[0]) {
2848 report("The %s view is disabled in pager view", view->name);
2849 return;
2850 }
2852 if (split) {
2853 display[1] = view;
2854 if (!backgrounded)
2855 current_view = 1;
2856 } else if (!nomaximize) {
2857 /* Maximize the current view. */
2858 memset(display, 0, sizeof(display));
2859 current_view = 0;
2860 display[current_view] = view;
2861 }
2863 /* Resize the view when switching between split- and full-screen,
2864 * or when switching between two different full-screen views. */
2865 if (nviews != displayed_views() ||
2866 (nviews == 1 && base_view != display[0]))
2867 resize_display();
2869 if (view->ops->open) {
2870 if (!view->ops->open(view)) {
2871 report("Failed to load %s view", view->name);
2872 return;
2873 }
2875 } else if ((reload || strcmp(view->vid, view->id)) &&
2876 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
2877 report("Failed to load %s view", view->name);
2878 return;
2879 }
2881 if (split && prev->lineno - prev->offset >= prev->height) {
2882 /* Take the title line into account. */
2883 int lines = prev->lineno - prev->offset - prev->height + 1;
2885 /* Scroll the view that was split if the current line is
2886 * outside the new limited view. */
2887 do_scroll_view(prev, lines);
2888 }
2890 if (prev && view != prev) {
2891 if (split && !backgrounded) {
2892 /* "Blur" the previous view. */
2893 update_view_title(prev);
2894 }
2896 view->parent = prev;
2897 }
2899 if (view->pipe && view->lines == 0) {
2900 /* Clear the old view and let the incremental updating refill
2901 * the screen. */
2902 werase(view->win);
2903 report("");
2904 } else if (view_is_displayed(view)) {
2905 redraw_view(view);
2906 report("");
2907 }
2909 /* If the view is backgrounded the above calls to report()
2910 * won't redraw the view title. */
2911 if (backgrounded)
2912 update_view_title(view);
2913 }
2915 static void
2916 open_external_viewer(const char *argv[], const char *dir)
2917 {
2918 def_prog_mode(); /* save current tty modes */
2919 endwin(); /* restore original tty modes */
2920 run_io_fg(argv, dir);
2921 fprintf(stderr, "Press Enter to continue");
2922 getc(opt_tty);
2923 reset_prog_mode();
2924 redraw_display();
2925 }
2927 static void
2928 open_mergetool(const char *file)
2929 {
2930 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2932 open_external_viewer(mergetool_argv, opt_cdup);
2933 }
2935 static void
2936 open_editor(bool from_root, const char *file)
2937 {
2938 const char *editor_argv[] = { "vi", file, NULL };
2939 const char *editor;
2941 editor = getenv("GIT_EDITOR");
2942 if (!editor && *opt_editor)
2943 editor = opt_editor;
2944 if (!editor)
2945 editor = getenv("VISUAL");
2946 if (!editor)
2947 editor = getenv("EDITOR");
2948 if (!editor)
2949 editor = "vi";
2951 editor_argv[0] = editor;
2952 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
2953 }
2955 static void
2956 open_run_request(enum request request)
2957 {
2958 struct run_request *req = get_run_request(request);
2959 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
2961 if (!req) {
2962 report("Unknown run request");
2963 return;
2964 }
2966 if (format_argv(argv, req->argv, FORMAT_ALL))
2967 open_external_viewer(argv, NULL);
2968 free_argv(argv);
2969 }
2971 /*
2972 * User request switch noodle
2973 */
2975 static int
2976 view_driver(struct view *view, enum request request)
2977 {
2978 int i;
2980 if (request == REQ_NONE) {
2981 doupdate();
2982 return TRUE;
2983 }
2985 if (request > REQ_NONE) {
2986 open_run_request(request);
2987 /* FIXME: When all views can refresh always do this. */
2988 if (view == VIEW(REQ_VIEW_STATUS) ||
2989 view == VIEW(REQ_VIEW_MAIN) ||
2990 view == VIEW(REQ_VIEW_LOG) ||
2991 view == VIEW(REQ_VIEW_STAGE))
2992 request = REQ_REFRESH;
2993 else
2994 return TRUE;
2995 }
2997 if (view && view->lines) {
2998 request = view->ops->request(view, request, &view->line[view->lineno]);
2999 if (request == REQ_NONE)
3000 return TRUE;
3001 }
3003 switch (request) {
3004 case REQ_MOVE_UP:
3005 case REQ_MOVE_DOWN:
3006 case REQ_MOVE_PAGE_UP:
3007 case REQ_MOVE_PAGE_DOWN:
3008 case REQ_MOVE_FIRST_LINE:
3009 case REQ_MOVE_LAST_LINE:
3010 move_view(view, request);
3011 break;
3013 case REQ_SCROLL_LINE_DOWN:
3014 case REQ_SCROLL_LINE_UP:
3015 case REQ_SCROLL_PAGE_DOWN:
3016 case REQ_SCROLL_PAGE_UP:
3017 scroll_view(view, request);
3018 break;
3020 case REQ_VIEW_BLAME:
3021 if (!opt_file[0]) {
3022 report("No file chosen, press %s to open tree view",
3023 get_key(REQ_VIEW_TREE));
3024 break;
3025 }
3026 open_view(view, request, OPEN_DEFAULT);
3027 break;
3029 case REQ_VIEW_BLOB:
3030 if (!ref_blob[0]) {
3031 report("No file chosen, press %s to open tree view",
3032 get_key(REQ_VIEW_TREE));
3033 break;
3034 }
3035 open_view(view, request, OPEN_DEFAULT);
3036 break;
3038 case REQ_VIEW_PAGER:
3039 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3040 report("No pager content, press %s to run command from prompt",
3041 get_key(REQ_PROMPT));
3042 break;
3043 }
3044 open_view(view, request, OPEN_DEFAULT);
3045 break;
3047 case REQ_VIEW_STAGE:
3048 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3049 report("No stage content, press %s to open the status view and choose file",
3050 get_key(REQ_VIEW_STATUS));
3051 break;
3052 }
3053 open_view(view, request, OPEN_DEFAULT);
3054 break;
3056 case REQ_VIEW_STATUS:
3057 if (opt_is_inside_work_tree == FALSE) {
3058 report("The status view requires a working tree");
3059 break;
3060 }
3061 open_view(view, request, OPEN_DEFAULT);
3062 break;
3064 case REQ_VIEW_MAIN:
3065 case REQ_VIEW_DIFF:
3066 case REQ_VIEW_LOG:
3067 case REQ_VIEW_TREE:
3068 case REQ_VIEW_HELP:
3069 open_view(view, request, OPEN_DEFAULT);
3070 break;
3072 case REQ_NEXT:
3073 case REQ_PREVIOUS:
3074 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3076 if ((view == VIEW(REQ_VIEW_DIFF) &&
3077 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3078 (view == VIEW(REQ_VIEW_DIFF) &&
3079 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3080 (view == VIEW(REQ_VIEW_STAGE) &&
3081 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3082 (view == VIEW(REQ_VIEW_BLOB) &&
3083 view->parent == VIEW(REQ_VIEW_TREE))) {
3084 int line;
3086 view = view->parent;
3087 line = view->lineno;
3088 move_view(view, request);
3089 if (view_is_displayed(view))
3090 update_view_title(view);
3091 if (line != view->lineno)
3092 view->ops->request(view, REQ_ENTER,
3093 &view->line[view->lineno]);
3095 } else {
3096 move_view(view, request);
3097 }
3098 break;
3100 case REQ_VIEW_NEXT:
3101 {
3102 int nviews = displayed_views();
3103 int next_view = (current_view + 1) % nviews;
3105 if (next_view == current_view) {
3106 report("Only one view is displayed");
3107 break;
3108 }
3110 current_view = next_view;
3111 /* Blur out the title of the previous view. */
3112 update_view_title(view);
3113 report("");
3114 break;
3115 }
3116 case REQ_REFRESH:
3117 report("Refreshing is not yet supported for the %s view", view->name);
3118 break;
3120 case REQ_MAXIMIZE:
3121 if (displayed_views() == 2)
3122 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
3123 break;
3125 case REQ_TOGGLE_LINENO:
3126 toggle_view_option(&opt_line_number, "line numbers");
3127 break;
3129 case REQ_TOGGLE_DATE:
3130 toggle_view_option(&opt_date, "date display");
3131 break;
3133 case REQ_TOGGLE_AUTHOR:
3134 toggle_view_option(&opt_author, "author display");
3135 break;
3137 case REQ_TOGGLE_REV_GRAPH:
3138 toggle_view_option(&opt_rev_graph, "revision graph display");
3139 break;
3141 case REQ_TOGGLE_REFS:
3142 toggle_view_option(&opt_show_refs, "reference display");
3143 break;
3145 case REQ_SEARCH:
3146 case REQ_SEARCH_BACK:
3147 search_view(view, request);
3148 break;
3150 case REQ_FIND_NEXT:
3151 case REQ_FIND_PREV:
3152 find_next(view, request);
3153 break;
3155 case REQ_STOP_LOADING:
3156 for (i = 0; i < ARRAY_SIZE(views); i++) {
3157 view = &views[i];
3158 if (view->pipe)
3159 report("Stopped loading the %s view", view->name),
3160 end_update(view, TRUE);
3161 }
3162 break;
3164 case REQ_SHOW_VERSION:
3165 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3166 return TRUE;
3168 case REQ_SCREEN_RESIZE:
3169 resize_display();
3170 /* Fall-through */
3171 case REQ_SCREEN_REDRAW:
3172 redraw_display();
3173 break;
3175 case REQ_EDIT:
3176 report("Nothing to edit");
3177 break;
3179 case REQ_ENTER:
3180 report("Nothing to enter");
3181 break;
3183 case REQ_VIEW_CLOSE:
3184 /* XXX: Mark closed views by letting view->parent point to the
3185 * view itself. Parents to closed view should never be
3186 * followed. */
3187 if (view->parent &&
3188 view->parent->parent != view->parent) {
3189 memset(display, 0, sizeof(display));
3190 current_view = 0;
3191 display[current_view] = view->parent;
3192 view->parent = view;
3193 resize_display();
3194 redraw_display();
3195 report("");
3196 break;
3197 }
3198 /* Fall-through */
3199 case REQ_QUIT:
3200 return FALSE;
3202 default:
3203 report("Unknown key, press 'h' for help");
3204 return TRUE;
3205 }
3207 return TRUE;
3208 }
3211 /*
3212 * Pager backend
3213 */
3215 static bool
3216 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3217 {
3218 char *text = line->data;
3220 if (opt_line_number && draw_lineno(view, lineno))
3221 return TRUE;
3223 draw_text(view, line->type, text, TRUE);
3224 return TRUE;
3225 }
3227 static bool
3228 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3229 {
3230 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3231 char refbuf[SIZEOF_STR];
3232 char *ref = NULL;
3234 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3235 ref = chomp_string(refbuf);
3237 if (!ref || !*ref)
3238 return TRUE;
3240 /* This is the only fatal call, since it can "corrupt" the buffer. */
3241 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3242 return FALSE;
3244 return TRUE;
3245 }
3247 static void
3248 add_pager_refs(struct view *view, struct line *line)
3249 {
3250 char buf[SIZEOF_STR];
3251 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3252 struct ref **refs;
3253 size_t bufpos = 0, refpos = 0;
3254 const char *sep = "Refs: ";
3255 bool is_tag = FALSE;
3257 assert(line->type == LINE_COMMIT);
3259 refs = get_refs(commit_id);
3260 if (!refs) {
3261 if (view == VIEW(REQ_VIEW_DIFF))
3262 goto try_add_describe_ref;
3263 return;
3264 }
3266 do {
3267 struct ref *ref = refs[refpos];
3268 const char *fmt = ref->tag ? "%s[%s]" :
3269 ref->remote ? "%s<%s>" : "%s%s";
3271 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3272 return;
3273 sep = ", ";
3274 if (ref->tag)
3275 is_tag = TRUE;
3276 } while (refs[refpos++]->next);
3278 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3279 try_add_describe_ref:
3280 /* Add <tag>-g<commit_id> "fake" reference. */
3281 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3282 return;
3283 }
3285 if (bufpos == 0)
3286 return;
3288 add_line_text(view, buf, LINE_PP_REFS);
3289 }
3291 static bool
3292 pager_read(struct view *view, char *data)
3293 {
3294 struct line *line;
3296 if (!data)
3297 return TRUE;
3299 line = add_line_text(view, data, get_line_type(data));
3300 if (!line)
3301 return FALSE;
3303 if (line->type == LINE_COMMIT &&
3304 (view == VIEW(REQ_VIEW_DIFF) ||
3305 view == VIEW(REQ_VIEW_LOG)))
3306 add_pager_refs(view, line);
3308 return TRUE;
3309 }
3311 static enum request
3312 pager_request(struct view *view, enum request request, struct line *line)
3313 {
3314 int split = 0;
3316 if (request != REQ_ENTER)
3317 return request;
3319 if (line->type == LINE_COMMIT &&
3320 (view == VIEW(REQ_VIEW_LOG) ||
3321 view == VIEW(REQ_VIEW_PAGER))) {
3322 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3323 split = 1;
3324 }
3326 /* Always scroll the view even if it was split. That way
3327 * you can use Enter to scroll through the log view and
3328 * split open each commit diff. */
3329 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3331 /* FIXME: A minor workaround. Scrolling the view will call report("")
3332 * but if we are scrolling a non-current view this won't properly
3333 * update the view title. */
3334 if (split)
3335 update_view_title(view);
3337 return REQ_NONE;
3338 }
3340 static bool
3341 pager_grep(struct view *view, struct line *line)
3342 {
3343 regmatch_t pmatch;
3344 char *text = line->data;
3346 if (!*text)
3347 return FALSE;
3349 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3350 return FALSE;
3352 return TRUE;
3353 }
3355 static void
3356 pager_select(struct view *view, struct line *line)
3357 {
3358 if (line->type == LINE_COMMIT) {
3359 char *text = (char *)line->data + STRING_SIZE("commit ");
3361 if (view != VIEW(REQ_VIEW_PAGER))
3362 string_copy_rev(view->ref, text);
3363 string_copy_rev(ref_commit, text);
3364 }
3365 }
3367 static struct view_ops pager_ops = {
3368 "line",
3369 NULL,
3370 NULL,
3371 pager_read,
3372 pager_draw,
3373 pager_request,
3374 pager_grep,
3375 pager_select,
3376 };
3378 static const char *log_argv[SIZEOF_ARG] = {
3379 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3380 };
3382 static enum request
3383 log_request(struct view *view, enum request request, struct line *line)
3384 {
3385 switch (request) {
3386 case REQ_REFRESH:
3387 load_refs();
3388 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3389 return REQ_NONE;
3390 default:
3391 return pager_request(view, request, line);
3392 }
3393 }
3395 static struct view_ops log_ops = {
3396 "line",
3397 log_argv,
3398 NULL,
3399 pager_read,
3400 pager_draw,
3401 log_request,
3402 pager_grep,
3403 pager_select,
3404 };
3406 static const char *diff_argv[SIZEOF_ARG] = {
3407 "git", "show", "--pretty=fuller", "--no-color", "--root",
3408 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3409 };
3411 static struct view_ops diff_ops = {
3412 "line",
3413 diff_argv,
3414 NULL,
3415 pager_read,
3416 pager_draw,
3417 pager_request,
3418 pager_grep,
3419 pager_select,
3420 };
3422 /*
3423 * Help backend
3424 */
3426 static bool
3427 help_open(struct view *view)
3428 {
3429 int lines = ARRAY_SIZE(req_info) + 2;
3430 int i;
3432 if (view->lines > 0)
3433 return TRUE;
3435 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3436 if (!req_info[i].request)
3437 lines++;
3439 lines += run_requests + 1;
3441 view->line = calloc(lines, sizeof(*view->line));
3442 if (!view->line)
3443 return FALSE;
3445 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3447 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3448 const char *key;
3450 if (req_info[i].request == REQ_NONE)
3451 continue;
3453 if (!req_info[i].request) {
3454 add_line_text(view, "", LINE_DEFAULT);
3455 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3456 continue;
3457 }
3459 key = get_key(req_info[i].request);
3460 if (!*key)
3461 key = "(no key defined)";
3463 add_line_format(view, LINE_DEFAULT, " %-25s %s",
3464 key, req_info[i].help);
3465 }
3467 if (run_requests) {
3468 add_line_text(view, "", LINE_DEFAULT);
3469 add_line_text(view, "External commands:", LINE_DEFAULT);
3470 }
3472 for (i = 0; i < run_requests; i++) {
3473 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3474 const char *key;
3475 char cmd[SIZEOF_STR];
3476 size_t bufpos;
3477 int argc;
3479 if (!req)
3480 continue;
3482 key = get_key_name(req->key);
3483 if (!*key)
3484 key = "(no key defined)";
3486 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3487 if (!string_format_from(cmd, &bufpos, "%s%s",
3488 argc ? " " : "", req->argv[argc]))
3489 return REQ_NONE;
3491 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3492 keymap_table[req->keymap].name, key, cmd);
3493 }
3495 return TRUE;
3496 }
3498 static struct view_ops help_ops = {
3499 "line",
3500 NULL,
3501 help_open,
3502 NULL,
3503 pager_draw,
3504 pager_request,
3505 pager_grep,
3506 pager_select,
3507 };
3510 /*
3511 * Tree backend
3512 */
3514 struct tree_stack_entry {
3515 struct tree_stack_entry *prev; /* Entry below this in the stack */
3516 unsigned long lineno; /* Line number to restore */
3517 char *name; /* Position of name in opt_path */
3518 };
3520 /* The top of the path stack. */
3521 static struct tree_stack_entry *tree_stack = NULL;
3522 unsigned long tree_lineno = 0;
3524 static void
3525 pop_tree_stack_entry(void)
3526 {
3527 struct tree_stack_entry *entry = tree_stack;
3529 tree_lineno = entry->lineno;
3530 entry->name[0] = 0;
3531 tree_stack = entry->prev;
3532 free(entry);
3533 }
3535 static void
3536 push_tree_stack_entry(const char *name, unsigned long lineno)
3537 {
3538 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3539 size_t pathlen = strlen(opt_path);
3541 if (!entry)
3542 return;
3544 entry->prev = tree_stack;
3545 entry->name = opt_path + pathlen;
3546 tree_stack = entry;
3548 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3549 pop_tree_stack_entry();
3550 return;
3551 }
3553 /* Move the current line to the first tree entry. */
3554 tree_lineno = 1;
3555 entry->lineno = lineno;
3556 }
3558 /* Parse output from git-ls-tree(1):
3559 *
3560 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3561 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3562 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3563 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3564 */
3566 #define SIZEOF_TREE_ATTR \
3567 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3569 #define TREE_UP_FORMAT "040000 tree %s\t.."
3571 static const char *
3572 tree_path(struct line *line)
3573 {
3574 const char *path = line->data;
3576 return path + SIZEOF_TREE_ATTR;
3577 }
3579 static int
3580 tree_compare_entry(struct line *line1, struct line *line2)
3581 {
3582 if (line1->type != line2->type)
3583 return line1->type == LINE_TREE_DIR ? -1 : 1;
3584 return strcmp(tree_path(line1), tree_path(line2));
3585 }
3587 static bool
3588 tree_read(struct view *view, char *text)
3589 {
3590 size_t textlen = text ? strlen(text) : 0;
3591 struct line *entry, *line;
3592 enum line_type type;
3594 if (!text)
3595 return TRUE;
3596 if (textlen <= SIZEOF_TREE_ATTR)
3597 return FALSE;
3599 type = text[STRING_SIZE("100644 ")] == 't'
3600 ? LINE_TREE_DIR : LINE_TREE_FILE;
3602 if (view->lines == 0 &&
3603 !add_line_format(view, LINE_DEFAULT, "Directory path /%s", opt_path))
3604 return FALSE;
3606 /* Strip the path part ... */
3607 if (*opt_path) {
3608 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3609 size_t striplen = strlen(opt_path);
3610 char *path = text + SIZEOF_TREE_ATTR;
3612 if (pathlen > striplen)
3613 memmove(path, path + striplen,
3614 pathlen - striplen + 1);
3616 /* Insert "link" to parent directory. */
3617 if (view->lines == 1 &&
3618 !add_line_format(view, LINE_TREE_DIR, TREE_UP_FORMAT, view->ref))
3619 return FALSE;
3620 }
3622 entry = add_line_text(view, text, type);
3623 if (!entry)
3624 return FALSE;
3625 text = entry->data;
3627 /* Skip "Directory ..." and ".." line. */
3628 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3629 if (tree_compare_entry(line, entry) <= 0)
3630 continue;
3632 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3634 line->data = text;
3635 line->type = type;
3636 for (; line <= entry; line++)
3637 line->dirty = line->cleareol = 1;
3638 return TRUE;
3639 }
3641 if (tree_lineno > view->lineno) {
3642 view->lineno = tree_lineno;
3643 tree_lineno = 0;
3644 }
3646 return TRUE;
3647 }
3649 static enum request
3650 tree_request(struct view *view, enum request request, struct line *line)
3651 {
3652 enum open_flags flags;
3654 switch (request) {
3655 case REQ_VIEW_BLAME:
3656 if (line->type != LINE_TREE_FILE) {
3657 report("Blame only supported for files");
3658 return REQ_NONE;
3659 }
3661 string_copy(opt_ref, view->vid);
3662 return request;
3664 case REQ_EDIT:
3665 if (line->type != LINE_TREE_FILE) {
3666 report("Edit only supported for files");
3667 } else if (!is_head_commit(view->vid)) {
3668 report("Edit only supported for files in the current work tree");
3669 } else {
3670 open_editor(TRUE, opt_file);
3671 }
3672 return REQ_NONE;
3674 case REQ_TREE_PARENT:
3675 if (!*opt_path) {
3676 /* quit view if at top of tree */
3677 return REQ_VIEW_CLOSE;
3678 }
3679 /* fake 'cd ..' */
3680 line = &view->line[1];
3681 break;
3683 case REQ_ENTER:
3684 break;
3686 default:
3687 return request;
3688 }
3690 /* Cleanup the stack if the tree view is at a different tree. */
3691 while (!*opt_path && tree_stack)
3692 pop_tree_stack_entry();
3694 switch (line->type) {
3695 case LINE_TREE_DIR:
3696 /* Depending on whether it is a subdir or parent (updir?) link
3697 * mangle the path buffer. */
3698 if (line == &view->line[1] && *opt_path) {
3699 pop_tree_stack_entry();
3701 } else {
3702 const char *basename = tree_path(line);
3704 push_tree_stack_entry(basename, view->lineno);
3705 }
3707 /* Trees and subtrees share the same ID, so they are not not
3708 * unique like blobs. */
3709 flags = OPEN_RELOAD;
3710 request = REQ_VIEW_TREE;
3711 break;
3713 case LINE_TREE_FILE:
3714 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3715 request = REQ_VIEW_BLOB;
3716 break;
3718 default:
3719 return TRUE;
3720 }
3722 open_view(view, request, flags);
3723 if (request == REQ_VIEW_TREE) {
3724 view->lineno = tree_lineno;
3725 }
3727 return REQ_NONE;
3728 }
3730 static void
3731 tree_select(struct view *view, struct line *line)
3732 {
3733 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3735 if (line->type == LINE_TREE_FILE) {
3736 string_copy_rev(ref_blob, text);
3737 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3739 } else if (line->type != LINE_TREE_DIR) {
3740 return;
3741 }
3743 string_copy_rev(view->ref, text);
3744 }
3746 static const char *tree_argv[SIZEOF_ARG] = {
3747 "git", "ls-tree", "%(commit)", "%(directory)", NULL
3748 };
3750 static struct view_ops tree_ops = {
3751 "file",
3752 tree_argv,
3753 NULL,
3754 tree_read,
3755 pager_draw,
3756 tree_request,
3757 pager_grep,
3758 tree_select,
3759 };
3761 static bool
3762 blob_read(struct view *view, char *line)
3763 {
3764 if (!line)
3765 return TRUE;
3766 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3767 }
3769 static const char *blob_argv[SIZEOF_ARG] = {
3770 "git", "cat-file", "blob", "%(blob)", NULL
3771 };
3773 static struct view_ops blob_ops = {
3774 "line",
3775 blob_argv,
3776 NULL,
3777 blob_read,
3778 pager_draw,
3779 pager_request,
3780 pager_grep,
3781 pager_select,
3782 };
3784 /*
3785 * Blame backend
3786 *
3787 * Loading the blame view is a two phase job:
3788 *
3789 * 1. File content is read either using opt_file from the
3790 * filesystem or using git-cat-file.
3791 * 2. Then blame information is incrementally added by
3792 * reading output from git-blame.
3793 */
3795 static const char *blame_head_argv[] = {
3796 "git", "blame", "--incremental", "--", "%(file)", NULL
3797 };
3799 static const char *blame_ref_argv[] = {
3800 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
3801 };
3803 static const char *blame_cat_file_argv[] = {
3804 "git", "cat-file", "blob", "%(ref):%(file)", NULL
3805 };
3807 struct blame_commit {
3808 char id[SIZEOF_REV]; /* SHA1 ID. */
3809 char title[128]; /* First line of the commit message. */
3810 char author[75]; /* Author of the commit. */
3811 struct tm time; /* Date from the author ident. */
3812 char filename[128]; /* Name of file. */
3813 };
3815 struct blame {
3816 struct blame_commit *commit;
3817 char text[1];
3818 };
3820 static bool
3821 blame_open(struct view *view)
3822 {
3823 if (*opt_ref || !io_open(&view->io, opt_file)) {
3824 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
3825 return FALSE;
3826 }
3828 setup_update(view, opt_file);
3829 string_format(view->ref, "%s ...", opt_file);
3831 return TRUE;
3832 }
3834 static struct blame_commit *
3835 get_blame_commit(struct view *view, const char *id)
3836 {
3837 size_t i;
3839 for (i = 0; i < view->lines; i++) {
3840 struct blame *blame = view->line[i].data;
3842 if (!blame->commit)
3843 continue;
3845 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3846 return blame->commit;
3847 }
3849 {
3850 struct blame_commit *commit = calloc(1, sizeof(*commit));
3852 if (commit)
3853 string_ncopy(commit->id, id, SIZEOF_REV);
3854 return commit;
3855 }
3856 }
3858 static bool
3859 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3860 {
3861 const char *pos = *posref;
3863 *posref = NULL;
3864 pos = strchr(pos + 1, ' ');
3865 if (!pos || !isdigit(pos[1]))
3866 return FALSE;
3867 *number = atoi(pos + 1);
3868 if (*number < min || *number > max)
3869 return FALSE;
3871 *posref = pos;
3872 return TRUE;
3873 }
3875 static struct blame_commit *
3876 parse_blame_commit(struct view *view, const char *text, int *blamed)
3877 {
3878 struct blame_commit *commit;
3879 struct blame *blame;
3880 const char *pos = text + SIZEOF_REV - 1;
3881 size_t lineno;
3882 size_t group;
3884 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3885 return NULL;
3887 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3888 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3889 return NULL;
3891 commit = get_blame_commit(view, text);
3892 if (!commit)
3893 return NULL;
3895 *blamed += group;
3896 while (group--) {
3897 struct line *line = &view->line[lineno + group - 1];
3899 blame = line->data;
3900 blame->commit = commit;
3901 line->dirty = 1;
3902 }
3904 return commit;
3905 }
3907 static bool
3908 blame_read_file(struct view *view, const char *line, bool *read_file)
3909 {
3910 if (!line) {
3911 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
3912 struct io io = {};
3914 if (view->lines == 0 && !view->parent)
3915 die("No blame exist for %s", view->vid);
3917 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
3918 report("Failed to load blame data");
3919 return TRUE;
3920 }
3922 done_io(view->pipe);
3923 view->io = io;
3924 *read_file = FALSE;
3925 return FALSE;
3927 } else {
3928 size_t linelen = strlen(line);
3929 struct blame *blame = malloc(sizeof(*blame) + linelen);
3931 blame->commit = NULL;
3932 strncpy(blame->text, line, linelen);
3933 blame->text[linelen] = 0;
3934 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
3935 }
3936 }
3938 static bool
3939 match_blame_header(const char *name, char **line)
3940 {
3941 size_t namelen = strlen(name);
3942 bool matched = !strncmp(name, *line, namelen);
3944 if (matched)
3945 *line += namelen;
3947 return matched;
3948 }
3950 static bool
3951 blame_read(struct view *view, char *line)
3952 {
3953 static struct blame_commit *commit = NULL;
3954 static int blamed = 0;
3955 static time_t author_time;
3956 static bool read_file = TRUE;
3958 if (read_file)
3959 return blame_read_file(view, line, &read_file);
3961 if (!line) {
3962 /* Reset all! */
3963 commit = NULL;
3964 blamed = 0;
3965 read_file = TRUE;
3966 string_format(view->ref, "%s", view->vid);
3967 if (view_is_displayed(view)) {
3968 update_view_title(view);
3969 redraw_view_from(view, 0);
3970 }
3971 return TRUE;
3972 }
3974 if (!commit) {
3975 commit = parse_blame_commit(view, line, &blamed);
3976 string_format(view->ref, "%s %2d%%", view->vid,
3977 blamed * 100 / view->lines);
3979 } else if (match_blame_header("author ", &line)) {
3980 string_ncopy(commit->author, line, strlen(line));
3982 } else if (match_blame_header("author-time ", &line)) {
3983 author_time = (time_t) atol(line);
3985 } else if (match_blame_header("author-tz ", &line)) {
3986 long tz;
3988 tz = ('0' - line[1]) * 60 * 60 * 10;
3989 tz += ('0' - line[2]) * 60 * 60;
3990 tz += ('0' - line[3]) * 60;
3991 tz += ('0' - line[4]) * 60;
3993 if (line[0] == '-')
3994 tz = -tz;
3996 author_time -= tz;
3997 gmtime_r(&author_time, &commit->time);
3999 } else if (match_blame_header("summary ", &line)) {
4000 string_ncopy(commit->title, line, strlen(line));
4002 } else if (match_blame_header("filename ", &line)) {
4003 string_ncopy(commit->filename, line, strlen(line));
4004 commit = NULL;
4005 }
4007 return TRUE;
4008 }
4010 static bool
4011 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4012 {
4013 struct blame *blame = line->data;
4014 struct tm *time = NULL;
4015 const char *id = NULL, *author = NULL;
4017 if (blame->commit && *blame->commit->filename) {
4018 id = blame->commit->id;
4019 author = blame->commit->author;
4020 time = &blame->commit->time;
4021 }
4023 if (opt_date && draw_date(view, time))
4024 return TRUE;
4026 if (opt_author &&
4027 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
4028 return TRUE;
4030 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4031 return TRUE;
4033 if (draw_lineno(view, lineno))
4034 return TRUE;
4036 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
4037 return TRUE;
4038 }
4040 static bool
4041 check_blame_commit(struct blame *blame)
4042 {
4043 if (!blame->commit)
4044 report("Commit data not loaded yet");
4045 else if (!strcmp(blame->commit->id, NULL_ID))
4046 report("No commit exist for the selected line");
4047 else
4048 return TRUE;
4049 return FALSE;
4050 }
4052 static enum request
4053 blame_request(struct view *view, enum request request, struct line *line)
4054 {
4055 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4056 struct blame *blame = line->data;
4058 switch (request) {
4059 case REQ_VIEW_BLAME:
4060 if (check_blame_commit(blame)) {
4061 string_copy(opt_ref, blame->commit->id);
4062 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4063 }
4064 break;
4066 case REQ_ENTER:
4067 if (!blame->commit) {
4068 report("No commit loaded yet");
4069 break;
4070 }
4072 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4073 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4074 break;
4076 if (!strcmp(blame->commit->id, NULL_ID)) {
4077 struct view *diff = VIEW(REQ_VIEW_DIFF);
4078 const char *diff_index_argv[] = {
4079 "git", "diff-index", "--root", "--cached",
4080 "--patch-with-stat", "-C", "-M",
4081 "HEAD", "--", view->vid, NULL
4082 };
4084 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4085 report("Failed to allocate diff command");
4086 break;
4087 }
4088 flags |= OPEN_PREPARED;
4089 }
4091 open_view(view, REQ_VIEW_DIFF, flags);
4092 break;
4094 default:
4095 return request;
4096 }
4098 return REQ_NONE;
4099 }
4101 static bool
4102 blame_grep(struct view *view, struct line *line)
4103 {
4104 struct blame *blame = line->data;
4105 struct blame_commit *commit = blame->commit;
4106 regmatch_t pmatch;
4108 #define MATCH(text, on) \
4109 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4111 if (commit) {
4112 char buf[DATE_COLS + 1];
4114 if (MATCH(commit->title, 1) ||
4115 MATCH(commit->author, opt_author) ||
4116 MATCH(commit->id, opt_date))
4117 return TRUE;
4119 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
4120 MATCH(buf, 1))
4121 return TRUE;
4122 }
4124 return MATCH(blame->text, 1);
4126 #undef MATCH
4127 }
4129 static void
4130 blame_select(struct view *view, struct line *line)
4131 {
4132 struct blame *blame = line->data;
4133 struct blame_commit *commit = blame->commit;
4135 if (!commit)
4136 return;
4138 if (!strcmp(commit->id, NULL_ID))
4139 string_ncopy(ref_commit, "HEAD", 4);
4140 else
4141 string_copy_rev(ref_commit, commit->id);
4142 }
4144 static struct view_ops blame_ops = {
4145 "line",
4146 NULL,
4147 blame_open,
4148 blame_read,
4149 blame_draw,
4150 blame_request,
4151 blame_grep,
4152 blame_select,
4153 };
4155 /*
4156 * Status backend
4157 */
4159 struct status {
4160 char status;
4161 struct {
4162 mode_t mode;
4163 char rev[SIZEOF_REV];
4164 char name[SIZEOF_STR];
4165 } old;
4166 struct {
4167 mode_t mode;
4168 char rev[SIZEOF_REV];
4169 char name[SIZEOF_STR];
4170 } new;
4171 };
4173 static char status_onbranch[SIZEOF_STR];
4174 static struct status stage_status;
4175 static enum line_type stage_line_type;
4176 static size_t stage_chunks;
4177 static int *stage_chunk;
4179 /* This should work even for the "On branch" line. */
4180 static inline bool
4181 status_has_none(struct view *view, struct line *line)
4182 {
4183 return line < view->line + view->lines && !line[1].data;
4184 }
4186 /* Get fields from the diff line:
4187 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4188 */
4189 static inline bool
4190 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4191 {
4192 const char *old_mode = buf + 1;
4193 const char *new_mode = buf + 8;
4194 const char *old_rev = buf + 15;
4195 const char *new_rev = buf + 56;
4196 const char *status = buf + 97;
4198 if (bufsize < 98 ||
4199 old_mode[-1] != ':' ||
4200 new_mode[-1] != ' ' ||
4201 old_rev[-1] != ' ' ||
4202 new_rev[-1] != ' ' ||
4203 status[-1] != ' ')
4204 return FALSE;
4206 file->status = *status;
4208 string_copy_rev(file->old.rev, old_rev);
4209 string_copy_rev(file->new.rev, new_rev);
4211 file->old.mode = strtoul(old_mode, NULL, 8);
4212 file->new.mode = strtoul(new_mode, NULL, 8);
4214 file->old.name[0] = file->new.name[0] = 0;
4216 return TRUE;
4217 }
4219 static bool
4220 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4221 {
4222 struct status *file = NULL;
4223 struct status *unmerged = NULL;
4224 char *buf;
4225 struct io io = {};
4227 if (!run_io(&io, argv, NULL, IO_RD))
4228 return FALSE;
4230 add_line_data(view, NULL, type);
4232 while ((buf = io_get(&io, 0, TRUE))) {
4233 if (!file) {
4234 file = calloc(1, sizeof(*file));
4235 if (!file || !add_line_data(view, file, type))
4236 goto error_out;
4237 }
4239 /* Parse diff info part. */
4240 if (status) {
4241 file->status = status;
4242 if (status == 'A')
4243 string_copy(file->old.rev, NULL_ID);
4245 } else if (!file->status) {
4246 if (!status_get_diff(file, buf, strlen(buf)))
4247 goto error_out;
4249 buf = io_get(&io, 0, TRUE);
4250 if (!buf)
4251 break;
4253 /* Collapse all 'M'odified entries that follow a
4254 * associated 'U'nmerged entry. */
4255 if (file->status == 'U') {
4256 unmerged = file;
4258 } else if (unmerged) {
4259 int collapse = !strcmp(buf, unmerged->new.name);
4261 unmerged = NULL;
4262 if (collapse) {
4263 free(file);
4264 view->lines--;
4265 continue;
4266 }
4267 }
4268 }
4270 /* Grab the old name for rename/copy. */
4271 if (!*file->old.name &&
4272 (file->status == 'R' || file->status == 'C')) {
4273 string_ncopy(file->old.name, buf, strlen(buf));
4275 buf = io_get(&io, 0, TRUE);
4276 if (!buf)
4277 break;
4278 }
4280 /* git-ls-files just delivers a NUL separated list of
4281 * file names similar to the second half of the
4282 * git-diff-* output. */
4283 string_ncopy(file->new.name, buf, strlen(buf));
4284 if (!*file->old.name)
4285 string_copy(file->old.name, file->new.name);
4286 file = NULL;
4287 }
4289 if (io_error(&io)) {
4290 error_out:
4291 done_io(&io);
4292 return FALSE;
4293 }
4295 if (!view->line[view->lines - 1].data)
4296 add_line_data(view, NULL, LINE_STAT_NONE);
4298 done_io(&io);
4299 return TRUE;
4300 }
4302 /* Don't show unmerged entries in the staged section. */
4303 static const char *status_diff_index_argv[] = {
4304 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4305 "--cached", "-M", "HEAD", NULL
4306 };
4308 static const char *status_diff_files_argv[] = {
4309 "git", "diff-files", "-z", NULL
4310 };
4312 static const char *status_list_other_argv[] = {
4313 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4314 };
4316 static const char *status_list_no_head_argv[] = {
4317 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4318 };
4320 static const char *update_index_argv[] = {
4321 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4322 };
4324 /* First parse staged info using git-diff-index(1), then parse unstaged
4325 * info using git-diff-files(1), and finally untracked files using
4326 * git-ls-files(1). */
4327 static bool
4328 status_open(struct view *view)
4329 {
4330 unsigned long prev_lineno = view->lineno;
4332 reset_view(view);
4334 add_line_data(view, NULL, LINE_STAT_HEAD);
4335 if (is_initial_commit())
4336 string_copy(status_onbranch, "Initial commit");
4337 else if (!*opt_head)
4338 string_copy(status_onbranch, "Not currently on any branch");
4339 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4340 return FALSE;
4342 run_io_bg(update_index_argv);
4344 if (is_initial_commit()) {
4345 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4346 return FALSE;
4347 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4348 return FALSE;
4349 }
4351 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4352 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4353 return FALSE;
4355 /* If all went well restore the previous line number to stay in
4356 * the context or select a line with something that can be
4357 * updated. */
4358 if (prev_lineno >= view->lines)
4359 prev_lineno = view->lines - 1;
4360 while (prev_lineno < view->lines && !view->line[prev_lineno].data)
4361 prev_lineno++;
4362 while (prev_lineno > 0 && !view->line[prev_lineno].data)
4363 prev_lineno--;
4365 /* If the above fails, always skip the "On branch" line. */
4366 if (prev_lineno < view->lines)
4367 view->lineno = prev_lineno;
4368 else
4369 view->lineno = 1;
4371 if (view->lineno < view->offset)
4372 view->offset = view->lineno;
4373 else if (view->offset + view->height <= view->lineno)
4374 view->offset = view->lineno - view->height + 1;
4376 return TRUE;
4377 }
4379 static bool
4380 status_draw(struct view *view, struct line *line, unsigned int lineno)
4381 {
4382 struct status *status = line->data;
4383 enum line_type type;
4384 const char *text;
4386 if (!status) {
4387 switch (line->type) {
4388 case LINE_STAT_STAGED:
4389 type = LINE_STAT_SECTION;
4390 text = "Changes to be committed:";
4391 break;
4393 case LINE_STAT_UNSTAGED:
4394 type = LINE_STAT_SECTION;
4395 text = "Changed but not updated:";
4396 break;
4398 case LINE_STAT_UNTRACKED:
4399 type = LINE_STAT_SECTION;
4400 text = "Untracked files:";
4401 break;
4403 case LINE_STAT_NONE:
4404 type = LINE_DEFAULT;
4405 text = " (no files)";
4406 break;
4408 case LINE_STAT_HEAD:
4409 type = LINE_STAT_HEAD;
4410 text = status_onbranch;
4411 break;
4413 default:
4414 return FALSE;
4415 }
4416 } else {
4417 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4419 buf[0] = status->status;
4420 if (draw_text(view, line->type, buf, TRUE))
4421 return TRUE;
4422 type = LINE_DEFAULT;
4423 text = status->new.name;
4424 }
4426 draw_text(view, type, text, TRUE);
4427 return TRUE;
4428 }
4430 static enum request
4431 status_enter(struct view *view, struct line *line)
4432 {
4433 struct status *status = line->data;
4434 const char *oldpath = status ? status->old.name : NULL;
4435 /* Diffs for unmerged entries are empty when passing the new
4436 * path, so leave it empty. */
4437 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4438 const char *info;
4439 enum open_flags split;
4440 struct view *stage = VIEW(REQ_VIEW_STAGE);
4442 if (line->type == LINE_STAT_NONE ||
4443 (!status && line[1].type == LINE_STAT_NONE)) {
4444 report("No file to diff");
4445 return REQ_NONE;
4446 }
4448 switch (line->type) {
4449 case LINE_STAT_STAGED:
4450 if (is_initial_commit()) {
4451 const char *no_head_diff_argv[] = {
4452 "git", "diff", "--no-color", "--patch-with-stat",
4453 "--", "/dev/null", newpath, NULL
4454 };
4456 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4457 return REQ_QUIT;
4458 } else {
4459 const char *index_show_argv[] = {
4460 "git", "diff-index", "--root", "--patch-with-stat",
4461 "-C", "-M", "--cached", "HEAD", "--",
4462 oldpath, newpath, NULL
4463 };
4465 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4466 return REQ_QUIT;
4467 }
4469 if (status)
4470 info = "Staged changes to %s";
4471 else
4472 info = "Staged changes";
4473 break;
4475 case LINE_STAT_UNSTAGED:
4476 {
4477 const char *files_show_argv[] = {
4478 "git", "diff-files", "--root", "--patch-with-stat",
4479 "-C", "-M", "--", oldpath, newpath, NULL
4480 };
4482 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
4483 return REQ_QUIT;
4484 if (status)
4485 info = "Unstaged changes to %s";
4486 else
4487 info = "Unstaged changes";
4488 break;
4489 }
4490 case LINE_STAT_UNTRACKED:
4491 if (!newpath) {
4492 report("No file to show");
4493 return REQ_NONE;
4494 }
4496 if (!suffixcmp(status->new.name, -1, "/")) {
4497 report("Cannot display a directory");
4498 return REQ_NONE;
4499 }
4501 if (!prepare_update_file(stage, newpath))
4502 return REQ_QUIT;
4503 info = "Untracked file %s";
4504 break;
4506 case LINE_STAT_HEAD:
4507 return REQ_NONE;
4509 default:
4510 die("line type %d not handled in switch", line->type);
4511 }
4513 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4514 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH | split);
4515 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4516 if (status) {
4517 stage_status = *status;
4518 } else {
4519 memset(&stage_status, 0, sizeof(stage_status));
4520 }
4522 stage_line_type = line->type;
4523 stage_chunks = 0;
4524 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4525 }
4527 return REQ_NONE;
4528 }
4530 static bool
4531 status_exists(struct status *status, enum line_type type)
4532 {
4533 struct view *view = VIEW(REQ_VIEW_STATUS);
4534 struct line *line;
4536 for (line = view->line; line < view->line + view->lines; line++) {
4537 struct status *pos = line->data;
4539 if (line->type != type)
4540 continue;
4541 if (!pos && (!status || !status->status))
4542 return TRUE;
4543 if (pos && !strcmp(status->new.name, pos->new.name))
4544 return TRUE;
4545 }
4547 return FALSE;
4548 }
4551 static bool
4552 status_update_prepare(struct io *io, enum line_type type)
4553 {
4554 const char *staged_argv[] = {
4555 "git", "update-index", "-z", "--index-info", NULL
4556 };
4557 const char *others_argv[] = {
4558 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
4559 };
4561 switch (type) {
4562 case LINE_STAT_STAGED:
4563 return run_io(io, staged_argv, opt_cdup, IO_WR);
4565 case LINE_STAT_UNSTAGED:
4566 return run_io(io, others_argv, opt_cdup, IO_WR);
4568 case LINE_STAT_UNTRACKED:
4569 return run_io(io, others_argv, NULL, IO_WR);
4571 default:
4572 die("line type %d not handled in switch", type);
4573 return FALSE;
4574 }
4575 }
4577 static bool
4578 status_update_write(struct io *io, struct status *status, enum line_type type)
4579 {
4580 char buf[SIZEOF_STR];
4581 size_t bufsize = 0;
4583 switch (type) {
4584 case LINE_STAT_STAGED:
4585 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4586 status->old.mode,
4587 status->old.rev,
4588 status->old.name, 0))
4589 return FALSE;
4590 break;
4592 case LINE_STAT_UNSTAGED:
4593 case LINE_STAT_UNTRACKED:
4594 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4595 return FALSE;
4596 break;
4598 default:
4599 die("line type %d not handled in switch", type);
4600 }
4602 return io_write(io, buf, bufsize);
4603 }
4605 static bool
4606 status_update_file(struct status *status, enum line_type type)
4607 {
4608 struct io io = {};
4609 bool result;
4611 if (!status_update_prepare(&io, type))
4612 return FALSE;
4614 result = status_update_write(&io, status, type);
4615 done_io(&io);
4616 return result;
4617 }
4619 static bool
4620 status_update_files(struct view *view, struct line *line)
4621 {
4622 struct io io = {};
4623 bool result = TRUE;
4624 struct line *pos = view->line + view->lines;
4625 int files = 0;
4626 int file, done;
4628 if (!status_update_prepare(&io, line->type))
4629 return FALSE;
4631 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4632 files++;
4634 for (file = 0, done = 0; result && file < files; line++, file++) {
4635 int almost_done = file * 100 / files;
4637 if (almost_done > done) {
4638 done = almost_done;
4639 string_format(view->ref, "updating file %u of %u (%d%% done)",
4640 file, files, done);
4641 update_view_title(view);
4642 }
4643 result = status_update_write(&io, line->data, line->type);
4644 }
4646 done_io(&io);
4647 return result;
4648 }
4650 static bool
4651 status_update(struct view *view)
4652 {
4653 struct line *line = &view->line[view->lineno];
4655 assert(view->lines);
4657 if (!line->data) {
4658 /* This should work even for the "On branch" line. */
4659 if (line < view->line + view->lines && !line[1].data) {
4660 report("Nothing to update");
4661 return FALSE;
4662 }
4664 if (!status_update_files(view, line + 1)) {
4665 report("Failed to update file status");
4666 return FALSE;
4667 }
4669 } else if (!status_update_file(line->data, line->type)) {
4670 report("Failed to update file status");
4671 return FALSE;
4672 }
4674 return TRUE;
4675 }
4677 static bool
4678 status_revert(struct status *status, enum line_type type, bool has_none)
4679 {
4680 if (!status || type != LINE_STAT_UNSTAGED) {
4681 if (type == LINE_STAT_STAGED) {
4682 report("Cannot revert changes to staged files");
4683 } else if (type == LINE_STAT_UNTRACKED) {
4684 report("Cannot revert changes to untracked files");
4685 } else if (has_none) {
4686 report("Nothing to revert");
4687 } else {
4688 report("Cannot revert changes to multiple files");
4689 }
4690 return FALSE;
4692 } else {
4693 const char *checkout_argv[] = {
4694 "git", "checkout", "--", status->old.name, NULL
4695 };
4697 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
4698 return FALSE;
4699 return run_io_fg(checkout_argv, opt_cdup);
4700 }
4701 }
4703 static enum request
4704 status_request(struct view *view, enum request request, struct line *line)
4705 {
4706 struct status *status = line->data;
4708 switch (request) {
4709 case REQ_STATUS_UPDATE:
4710 if (!status_update(view))
4711 return REQ_NONE;
4712 break;
4714 case REQ_STATUS_REVERT:
4715 if (!status_revert(status, line->type, status_has_none(view, line)))
4716 return REQ_NONE;
4717 break;
4719 case REQ_STATUS_MERGE:
4720 if (!status || status->status != 'U') {
4721 report("Merging only possible for files with unmerged status ('U').");
4722 return REQ_NONE;
4723 }
4724 open_mergetool(status->new.name);
4725 break;
4727 case REQ_EDIT:
4728 if (!status)
4729 return request;
4730 if (status->status == 'D') {
4731 report("File has been deleted.");
4732 return REQ_NONE;
4733 }
4735 open_editor(status->status != '?', status->new.name);
4736 break;
4738 case REQ_VIEW_BLAME:
4739 if (status) {
4740 string_copy(opt_file, status->new.name);
4741 opt_ref[0] = 0;
4742 }
4743 return request;
4745 case REQ_ENTER:
4746 /* After returning the status view has been split to
4747 * show the stage view. No further reloading is
4748 * necessary. */
4749 status_enter(view, line);
4750 return REQ_NONE;
4752 case REQ_REFRESH:
4753 /* Simply reload the view. */
4754 break;
4756 default:
4757 return request;
4758 }
4760 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4762 return REQ_NONE;
4763 }
4765 static void
4766 status_select(struct view *view, struct line *line)
4767 {
4768 struct status *status = line->data;
4769 char file[SIZEOF_STR] = "all files";
4770 const char *text;
4771 const char *key;
4773 if (status && !string_format(file, "'%s'", status->new.name))
4774 return;
4776 if (!status && line[1].type == LINE_STAT_NONE)
4777 line++;
4779 switch (line->type) {
4780 case LINE_STAT_STAGED:
4781 text = "Press %s to unstage %s for commit";
4782 break;
4784 case LINE_STAT_UNSTAGED:
4785 text = "Press %s to stage %s for commit";
4786 break;
4788 case LINE_STAT_UNTRACKED:
4789 text = "Press %s to stage %s for addition";
4790 break;
4792 case LINE_STAT_HEAD:
4793 case LINE_STAT_NONE:
4794 text = "Nothing to update";
4795 break;
4797 default:
4798 die("line type %d not handled in switch", line->type);
4799 }
4801 if (status && status->status == 'U') {
4802 text = "Press %s to resolve conflict in %s";
4803 key = get_key(REQ_STATUS_MERGE);
4805 } else {
4806 key = get_key(REQ_STATUS_UPDATE);
4807 }
4809 string_format(view->ref, text, key, file);
4810 }
4812 static bool
4813 status_grep(struct view *view, struct line *line)
4814 {
4815 struct status *status = line->data;
4816 enum { S_STATUS, S_NAME, S_END } state;
4817 char buf[2] = "?";
4818 regmatch_t pmatch;
4820 if (!status)
4821 return FALSE;
4823 for (state = S_STATUS; state < S_END; state++) {
4824 const char *text;
4826 switch (state) {
4827 case S_NAME: text = status->new.name; break;
4828 case S_STATUS:
4829 buf[0] = status->status;
4830 text = buf;
4831 break;
4833 default:
4834 return FALSE;
4835 }
4837 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4838 return TRUE;
4839 }
4841 return FALSE;
4842 }
4844 static struct view_ops status_ops = {
4845 "file",
4846 NULL,
4847 status_open,
4848 NULL,
4849 status_draw,
4850 status_request,
4851 status_grep,
4852 status_select,
4853 };
4856 static bool
4857 stage_diff_write(struct io *io, struct line *line, struct line *end)
4858 {
4859 while (line < end) {
4860 if (!io_write(io, line->data, strlen(line->data)) ||
4861 !io_write(io, "\n", 1))
4862 return FALSE;
4863 line++;
4864 if (line->type == LINE_DIFF_CHUNK ||
4865 line->type == LINE_DIFF_HEADER)
4866 break;
4867 }
4869 return TRUE;
4870 }
4872 static struct line *
4873 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4874 {
4875 for (; view->line < line; line--)
4876 if (line->type == type)
4877 return line;
4879 return NULL;
4880 }
4882 static bool
4883 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
4884 {
4885 const char *apply_argv[SIZEOF_ARG] = {
4886 "git", "apply", "--whitespace=nowarn", NULL
4887 };
4888 struct line *diff_hdr;
4889 struct io io = {};
4890 int argc = 3;
4892 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4893 if (!diff_hdr)
4894 return FALSE;
4896 if (!revert)
4897 apply_argv[argc++] = "--cached";
4898 if (revert || stage_line_type == LINE_STAT_STAGED)
4899 apply_argv[argc++] = "-R";
4900 apply_argv[argc++] = "-";
4901 apply_argv[argc++] = NULL;
4902 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
4903 return FALSE;
4905 if (!stage_diff_write(&io, diff_hdr, chunk) ||
4906 !stage_diff_write(&io, chunk, view->line + view->lines))
4907 chunk = NULL;
4909 done_io(&io);
4910 run_io_bg(update_index_argv);
4912 return chunk ? TRUE : FALSE;
4913 }
4915 static bool
4916 stage_update(struct view *view, struct line *line)
4917 {
4918 struct line *chunk = NULL;
4920 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
4921 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4923 if (chunk) {
4924 if (!stage_apply_chunk(view, chunk, FALSE)) {
4925 report("Failed to apply chunk");
4926 return FALSE;
4927 }
4929 } else if (!stage_status.status) {
4930 view = VIEW(REQ_VIEW_STATUS);
4932 for (line = view->line; line < view->line + view->lines; line++)
4933 if (line->type == stage_line_type)
4934 break;
4936 if (!status_update_files(view, line + 1)) {
4937 report("Failed to update files");
4938 return FALSE;
4939 }
4941 } else if (!status_update_file(&stage_status, stage_line_type)) {
4942 report("Failed to update file");
4943 return FALSE;
4944 }
4946 return TRUE;
4947 }
4949 static bool
4950 stage_revert(struct view *view, struct line *line)
4951 {
4952 struct line *chunk = NULL;
4954 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
4955 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4957 if (chunk) {
4958 if (!prompt_yesno("Are you sure you want to revert changes?"))
4959 return FALSE;
4961 if (!stage_apply_chunk(view, chunk, TRUE)) {
4962 report("Failed to revert chunk");
4963 return FALSE;
4964 }
4965 return TRUE;
4967 } else {
4968 return status_revert(stage_status.status ? &stage_status : NULL,
4969 stage_line_type, FALSE);
4970 }
4971 }
4974 static void
4975 stage_next(struct view *view, struct line *line)
4976 {
4977 int i;
4979 if (!stage_chunks) {
4980 static size_t alloc = 0;
4981 int *tmp;
4983 for (line = view->line; line < view->line + view->lines; line++) {
4984 if (line->type != LINE_DIFF_CHUNK)
4985 continue;
4987 tmp = realloc_items(stage_chunk, &alloc,
4988 stage_chunks, sizeof(*tmp));
4989 if (!tmp) {
4990 report("Allocation failure");
4991 return;
4992 }
4994 stage_chunk = tmp;
4995 stage_chunk[stage_chunks++] = line - view->line;
4996 }
4997 }
4999 for (i = 0; i < stage_chunks; i++) {
5000 if (stage_chunk[i] > view->lineno) {
5001 do_scroll_view(view, stage_chunk[i] - view->lineno);
5002 report("Chunk %d of %d", i + 1, stage_chunks);
5003 return;
5004 }
5005 }
5007 report("No next chunk found");
5008 }
5010 static enum request
5011 stage_request(struct view *view, enum request request, struct line *line)
5012 {
5013 switch (request) {
5014 case REQ_STATUS_UPDATE:
5015 if (!stage_update(view, line))
5016 return REQ_NONE;
5017 break;
5019 case REQ_STATUS_REVERT:
5020 if (!stage_revert(view, line))
5021 return REQ_NONE;
5022 break;
5024 case REQ_STAGE_NEXT:
5025 if (stage_line_type == LINE_STAT_UNTRACKED) {
5026 report("File is untracked; press %s to add",
5027 get_key(REQ_STATUS_UPDATE));
5028 return REQ_NONE;
5029 }
5030 stage_next(view, line);
5031 return REQ_NONE;
5033 case REQ_EDIT:
5034 if (!stage_status.new.name[0])
5035 return request;
5036 if (stage_status.status == 'D') {
5037 report("File has been deleted.");
5038 return REQ_NONE;
5039 }
5041 open_editor(stage_status.status != '?', stage_status.new.name);
5042 break;
5044 case REQ_REFRESH:
5045 /* Reload everything ... */
5046 break;
5048 case REQ_VIEW_BLAME:
5049 if (stage_status.new.name[0]) {
5050 string_copy(opt_file, stage_status.new.name);
5051 opt_ref[0] = 0;
5052 }
5053 return request;
5055 case REQ_ENTER:
5056 return pager_request(view, request, line);
5058 default:
5059 return request;
5060 }
5062 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
5064 /* Check whether the staged entry still exists, and close the
5065 * stage view if it doesn't. */
5066 if (!status_exists(&stage_status, stage_line_type))
5067 return REQ_VIEW_CLOSE;
5069 if (stage_line_type == LINE_STAT_UNTRACKED) {
5070 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5071 report("Cannot display a directory");
5072 return REQ_NONE;
5073 }
5075 if (!prepare_update_file(view, stage_status.new.name)) {
5076 report("Failed to open file: %s", strerror(errno));
5077 return REQ_NONE;
5078 }
5079 }
5080 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5082 return REQ_NONE;
5083 }
5085 static struct view_ops stage_ops = {
5086 "line",
5087 NULL,
5088 NULL,
5089 pager_read,
5090 pager_draw,
5091 stage_request,
5092 pager_grep,
5093 pager_select,
5094 };
5097 /*
5098 * Revision graph
5099 */
5101 struct commit {
5102 char id[SIZEOF_REV]; /* SHA1 ID. */
5103 char title[128]; /* First line of the commit message. */
5104 char author[75]; /* Author of the commit. */
5105 struct tm time; /* Date from the author ident. */
5106 struct ref **refs; /* Repository references. */
5107 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5108 size_t graph_size; /* The width of the graph array. */
5109 bool has_parents; /* Rewritten --parents seen. */
5110 };
5112 /* Size of rev graph with no "padding" columns */
5113 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5115 struct rev_graph {
5116 struct rev_graph *prev, *next, *parents;
5117 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5118 size_t size;
5119 struct commit *commit;
5120 size_t pos;
5121 unsigned int boundary:1;
5122 };
5124 /* Parents of the commit being visualized. */
5125 static struct rev_graph graph_parents[4];
5127 /* The current stack of revisions on the graph. */
5128 static struct rev_graph graph_stacks[4] = {
5129 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5130 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5131 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5132 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5133 };
5135 static inline bool
5136 graph_parent_is_merge(struct rev_graph *graph)
5137 {
5138 return graph->parents->size > 1;
5139 }
5141 static inline void
5142 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5143 {
5144 struct commit *commit = graph->commit;
5146 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5147 commit->graph[commit->graph_size++] = symbol;
5148 }
5150 static void
5151 clear_rev_graph(struct rev_graph *graph)
5152 {
5153 graph->boundary = 0;
5154 graph->size = graph->pos = 0;
5155 graph->commit = NULL;
5156 memset(graph->parents, 0, sizeof(*graph->parents));
5157 }
5159 static void
5160 done_rev_graph(struct rev_graph *graph)
5161 {
5162 if (graph_parent_is_merge(graph) &&
5163 graph->pos < graph->size - 1 &&
5164 graph->next->size == graph->size + graph->parents->size - 1) {
5165 size_t i = graph->pos + graph->parents->size - 1;
5167 graph->commit->graph_size = i * 2;
5168 while (i < graph->next->size - 1) {
5169 append_to_rev_graph(graph, ' ');
5170 append_to_rev_graph(graph, '\\');
5171 i++;
5172 }
5173 }
5175 clear_rev_graph(graph);
5176 }
5178 static void
5179 push_rev_graph(struct rev_graph *graph, const char *parent)
5180 {
5181 int i;
5183 /* "Collapse" duplicate parents lines.
5184 *
5185 * FIXME: This needs to also update update the drawn graph but
5186 * for now it just serves as a method for pruning graph lines. */
5187 for (i = 0; i < graph->size; i++)
5188 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5189 return;
5191 if (graph->size < SIZEOF_REVITEMS) {
5192 string_copy_rev(graph->rev[graph->size++], parent);
5193 }
5194 }
5196 static chtype
5197 get_rev_graph_symbol(struct rev_graph *graph)
5198 {
5199 chtype symbol;
5201 if (graph->boundary)
5202 symbol = REVGRAPH_BOUND;
5203 else if (graph->parents->size == 0)
5204 symbol = REVGRAPH_INIT;
5205 else if (graph_parent_is_merge(graph))
5206 symbol = REVGRAPH_MERGE;
5207 else if (graph->pos >= graph->size)
5208 symbol = REVGRAPH_BRANCH;
5209 else
5210 symbol = REVGRAPH_COMMIT;
5212 return symbol;
5213 }
5215 static void
5216 draw_rev_graph(struct rev_graph *graph)
5217 {
5218 struct rev_filler {
5219 chtype separator, line;
5220 };
5221 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5222 static struct rev_filler fillers[] = {
5223 { ' ', '|' },
5224 { '`', '.' },
5225 { '\'', ' ' },
5226 { '/', ' ' },
5227 };
5228 chtype symbol = get_rev_graph_symbol(graph);
5229 struct rev_filler *filler;
5230 size_t i;
5232 if (opt_line_graphics)
5233 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5235 filler = &fillers[DEFAULT];
5237 for (i = 0; i < graph->pos; i++) {
5238 append_to_rev_graph(graph, filler->line);
5239 if (graph_parent_is_merge(graph->prev) &&
5240 graph->prev->pos == i)
5241 filler = &fillers[RSHARP];
5243 append_to_rev_graph(graph, filler->separator);
5244 }
5246 /* Place the symbol for this revision. */
5247 append_to_rev_graph(graph, symbol);
5249 if (graph->prev->size > graph->size)
5250 filler = &fillers[RDIAG];
5251 else
5252 filler = &fillers[DEFAULT];
5254 i++;
5256 for (; i < graph->size; i++) {
5257 append_to_rev_graph(graph, filler->separator);
5258 append_to_rev_graph(graph, filler->line);
5259 if (graph_parent_is_merge(graph->prev) &&
5260 i < graph->prev->pos + graph->parents->size)
5261 filler = &fillers[RSHARP];
5262 if (graph->prev->size > graph->size)
5263 filler = &fillers[LDIAG];
5264 }
5266 if (graph->prev->size > graph->size) {
5267 append_to_rev_graph(graph, filler->separator);
5268 if (filler->line != ' ')
5269 append_to_rev_graph(graph, filler->line);
5270 }
5271 }
5273 /* Prepare the next rev graph */
5274 static void
5275 prepare_rev_graph(struct rev_graph *graph)
5276 {
5277 size_t i;
5279 /* First, traverse all lines of revisions up to the active one. */
5280 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5281 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5282 break;
5284 push_rev_graph(graph->next, graph->rev[graph->pos]);
5285 }
5287 /* Interleave the new revision parent(s). */
5288 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5289 push_rev_graph(graph->next, graph->parents->rev[i]);
5291 /* Lastly, put any remaining revisions. */
5292 for (i = graph->pos + 1; i < graph->size; i++)
5293 push_rev_graph(graph->next, graph->rev[i]);
5294 }
5296 static void
5297 update_rev_graph(struct view *view, struct rev_graph *graph)
5298 {
5299 /* If this is the finalizing update ... */
5300 if (graph->commit)
5301 prepare_rev_graph(graph);
5303 /* Graph visualization needs a one rev look-ahead,
5304 * so the first update doesn't visualize anything. */
5305 if (!graph->prev->commit)
5306 return;
5308 if (view->lines > 2)
5309 view->line[view->lines - 3].dirty = 1;
5310 if (view->lines > 1)
5311 view->line[view->lines - 2].dirty = 1;
5312 draw_rev_graph(graph->prev);
5313 done_rev_graph(graph->prev->prev);
5314 }
5317 /*
5318 * Main view backend
5319 */
5321 static const char *main_argv[SIZEOF_ARG] = {
5322 "git", "log", "--no-color", "--pretty=raw", "--parents",
5323 "--topo-order", "%(head)", NULL
5324 };
5326 static bool
5327 main_draw(struct view *view, struct line *line, unsigned int lineno)
5328 {
5329 struct commit *commit = line->data;
5331 if (!*commit->author)
5332 return FALSE;
5334 if (opt_date && draw_date(view, &commit->time))
5335 return TRUE;
5337 if (opt_author &&
5338 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5339 return TRUE;
5341 if (opt_rev_graph && commit->graph_size &&
5342 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5343 return TRUE;
5345 if (opt_show_refs && commit->refs) {
5346 size_t i = 0;
5348 do {
5349 enum line_type type;
5351 if (commit->refs[i]->head)
5352 type = LINE_MAIN_HEAD;
5353 else if (commit->refs[i]->ltag)
5354 type = LINE_MAIN_LOCAL_TAG;
5355 else if (commit->refs[i]->tag)
5356 type = LINE_MAIN_TAG;
5357 else if (commit->refs[i]->tracked)
5358 type = LINE_MAIN_TRACKED;
5359 else if (commit->refs[i]->remote)
5360 type = LINE_MAIN_REMOTE;
5361 else
5362 type = LINE_MAIN_REF;
5364 if (draw_text(view, type, "[", TRUE) ||
5365 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5366 draw_text(view, type, "]", TRUE))
5367 return TRUE;
5369 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5370 return TRUE;
5371 } while (commit->refs[i++]->next);
5372 }
5374 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5375 return TRUE;
5376 }
5378 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5379 static bool
5380 main_read(struct view *view, char *line)
5381 {
5382 static struct rev_graph *graph = graph_stacks;
5383 enum line_type type;
5384 struct commit *commit;
5386 if (!line) {
5387 int i;
5389 if (!view->lines && !view->parent)
5390 die("No revisions match the given arguments.");
5391 if (view->lines > 0) {
5392 commit = view->line[view->lines - 1].data;
5393 view->line[view->lines - 1].dirty = 1;
5394 if (!*commit->author) {
5395 view->lines--;
5396 free(commit);
5397 graph->commit = NULL;
5398 }
5399 }
5400 update_rev_graph(view, graph);
5402 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5403 clear_rev_graph(&graph_stacks[i]);
5404 return TRUE;
5405 }
5407 type = get_line_type(line);
5408 if (type == LINE_COMMIT) {
5409 commit = calloc(1, sizeof(struct commit));
5410 if (!commit)
5411 return FALSE;
5413 line += STRING_SIZE("commit ");
5414 if (*line == '-') {
5415 graph->boundary = 1;
5416 line++;
5417 }
5419 string_copy_rev(commit->id, line);
5420 commit->refs = get_refs(commit->id);
5421 graph->commit = commit;
5422 add_line_data(view, commit, LINE_MAIN_COMMIT);
5424 while ((line = strchr(line, ' '))) {
5425 line++;
5426 push_rev_graph(graph->parents, line);
5427 commit->has_parents = TRUE;
5428 }
5429 return TRUE;
5430 }
5432 if (!view->lines)
5433 return TRUE;
5434 commit = view->line[view->lines - 1].data;
5436 switch (type) {
5437 case LINE_PARENT:
5438 if (commit->has_parents)
5439 break;
5440 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5441 break;
5443 case LINE_AUTHOR:
5444 {
5445 /* Parse author lines where the name may be empty:
5446 * author <email@address.tld> 1138474660 +0100
5447 */
5448 char *ident = line + STRING_SIZE("author ");
5449 char *nameend = strchr(ident, '<');
5450 char *emailend = strchr(ident, '>');
5452 if (!nameend || !emailend)
5453 break;
5455 update_rev_graph(view, graph);
5456 graph = graph->next;
5458 *nameend = *emailend = 0;
5459 ident = chomp_string(ident);
5460 if (!*ident) {
5461 ident = chomp_string(nameend + 1);
5462 if (!*ident)
5463 ident = "Unknown";
5464 }
5466 string_ncopy(commit->author, ident, strlen(ident));
5467 view->line[view->lines - 1].dirty = 1;
5469 /* Parse epoch and timezone */
5470 if (emailend[1] == ' ') {
5471 char *secs = emailend + 2;
5472 char *zone = strchr(secs, ' ');
5473 time_t time = (time_t) atol(secs);
5475 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5476 long tz;
5478 zone++;
5479 tz = ('0' - zone[1]) * 60 * 60 * 10;
5480 tz += ('0' - zone[2]) * 60 * 60;
5481 tz += ('0' - zone[3]) * 60;
5482 tz += ('0' - zone[4]) * 60;
5484 if (zone[0] == '-')
5485 tz = -tz;
5487 time -= tz;
5488 }
5490 gmtime_r(&time, &commit->time);
5491 }
5492 break;
5493 }
5494 default:
5495 /* Fill in the commit title if it has not already been set. */
5496 if (commit->title[0])
5497 break;
5499 /* Require titles to start with a non-space character at the
5500 * offset used by git log. */
5501 if (strncmp(line, " ", 4))
5502 break;
5503 line += 4;
5504 /* Well, if the title starts with a whitespace character,
5505 * try to be forgiving. Otherwise we end up with no title. */
5506 while (isspace(*line))
5507 line++;
5508 if (*line == '\0')
5509 break;
5510 /* FIXME: More graceful handling of titles; append "..." to
5511 * shortened titles, etc. */
5513 string_ncopy(commit->title, line, strlen(line));
5514 view->line[view->lines - 1].dirty = 1;
5515 }
5517 return TRUE;
5518 }
5520 static enum request
5521 main_request(struct view *view, enum request request, struct line *line)
5522 {
5523 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5525 switch (request) {
5526 case REQ_ENTER:
5527 open_view(view, REQ_VIEW_DIFF, flags);
5528 break;
5529 case REQ_REFRESH:
5530 load_refs();
5531 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5532 break;
5533 default:
5534 return request;
5535 }
5537 return REQ_NONE;
5538 }
5540 static bool
5541 grep_refs(struct ref **refs, regex_t *regex)
5542 {
5543 regmatch_t pmatch;
5544 size_t i = 0;
5546 if (!refs)
5547 return FALSE;
5548 do {
5549 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5550 return TRUE;
5551 } while (refs[i++]->next);
5553 return FALSE;
5554 }
5556 static bool
5557 main_grep(struct view *view, struct line *line)
5558 {
5559 struct commit *commit = line->data;
5560 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5561 char buf[DATE_COLS + 1];
5562 regmatch_t pmatch;
5564 for (state = S_TITLE; state < S_END; state++) {
5565 char *text;
5567 switch (state) {
5568 case S_TITLE: text = commit->title; break;
5569 case S_AUTHOR:
5570 if (!opt_author)
5571 continue;
5572 text = commit->author;
5573 break;
5574 case S_DATE:
5575 if (!opt_date)
5576 continue;
5577 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5578 continue;
5579 text = buf;
5580 break;
5581 case S_REFS:
5582 if (!opt_show_refs)
5583 continue;
5584 if (grep_refs(commit->refs, view->regex) == TRUE)
5585 return TRUE;
5586 continue;
5587 default:
5588 return FALSE;
5589 }
5591 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5592 return TRUE;
5593 }
5595 return FALSE;
5596 }
5598 static void
5599 main_select(struct view *view, struct line *line)
5600 {
5601 struct commit *commit = line->data;
5603 string_copy_rev(view->ref, commit->id);
5604 string_copy_rev(ref_commit, view->ref);
5605 }
5607 static struct view_ops main_ops = {
5608 "commit",
5609 main_argv,
5610 NULL,
5611 main_read,
5612 main_draw,
5613 main_request,
5614 main_grep,
5615 main_select,
5616 };
5619 /*
5620 * Unicode / UTF-8 handling
5621 *
5622 * NOTE: Much of the following code for dealing with unicode is derived from
5623 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5624 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5625 */
5627 /* I've (over)annotated a lot of code snippets because I am not entirely
5628 * confident that the approach taken by this small UTF-8 interface is correct.
5629 * --jonas */
5631 static inline int
5632 unicode_width(unsigned long c)
5633 {
5634 if (c >= 0x1100 &&
5635 (c <= 0x115f /* Hangul Jamo */
5636 || c == 0x2329
5637 || c == 0x232a
5638 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5639 /* CJK ... Yi */
5640 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5641 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5642 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5643 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5644 || (c >= 0xffe0 && c <= 0xffe6)
5645 || (c >= 0x20000 && c <= 0x2fffd)
5646 || (c >= 0x30000 && c <= 0x3fffd)))
5647 return 2;
5649 if (c == '\t')
5650 return opt_tab_size;
5652 return 1;
5653 }
5655 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5656 * Illegal bytes are set one. */
5657 static const unsigned char utf8_bytes[256] = {
5658 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,
5659 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,
5660 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,
5661 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,
5662 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,
5663 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,
5664 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,
5665 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,
5666 };
5668 /* Decode UTF-8 multi-byte representation into a unicode character. */
5669 static inline unsigned long
5670 utf8_to_unicode(const char *string, size_t length)
5671 {
5672 unsigned long unicode;
5674 switch (length) {
5675 case 1:
5676 unicode = string[0];
5677 break;
5678 case 2:
5679 unicode = (string[0] & 0x1f) << 6;
5680 unicode += (string[1] & 0x3f);
5681 break;
5682 case 3:
5683 unicode = (string[0] & 0x0f) << 12;
5684 unicode += ((string[1] & 0x3f) << 6);
5685 unicode += (string[2] & 0x3f);
5686 break;
5687 case 4:
5688 unicode = (string[0] & 0x0f) << 18;
5689 unicode += ((string[1] & 0x3f) << 12);
5690 unicode += ((string[2] & 0x3f) << 6);
5691 unicode += (string[3] & 0x3f);
5692 break;
5693 case 5:
5694 unicode = (string[0] & 0x0f) << 24;
5695 unicode += ((string[1] & 0x3f) << 18);
5696 unicode += ((string[2] & 0x3f) << 12);
5697 unicode += ((string[3] & 0x3f) << 6);
5698 unicode += (string[4] & 0x3f);
5699 break;
5700 case 6:
5701 unicode = (string[0] & 0x01) << 30;
5702 unicode += ((string[1] & 0x3f) << 24);
5703 unicode += ((string[2] & 0x3f) << 18);
5704 unicode += ((string[3] & 0x3f) << 12);
5705 unicode += ((string[4] & 0x3f) << 6);
5706 unicode += (string[5] & 0x3f);
5707 break;
5708 default:
5709 die("Invalid unicode length");
5710 }
5712 /* Invalid characters could return the special 0xfffd value but NUL
5713 * should be just as good. */
5714 return unicode > 0xffff ? 0 : unicode;
5715 }
5717 /* Calculates how much of string can be shown within the given maximum width
5718 * and sets trimmed parameter to non-zero value if all of string could not be
5719 * shown. If the reserve flag is TRUE, it will reserve at least one
5720 * trailing character, which can be useful when drawing a delimiter.
5721 *
5722 * Returns the number of bytes to output from string to satisfy max_width. */
5723 static size_t
5724 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5725 {
5726 const char *start = string;
5727 const char *end = strchr(string, '\0');
5728 unsigned char last_bytes = 0;
5729 size_t last_ucwidth = 0;
5731 *width = 0;
5732 *trimmed = 0;
5734 while (string < end) {
5735 int c = *(unsigned char *) string;
5736 unsigned char bytes = utf8_bytes[c];
5737 size_t ucwidth;
5738 unsigned long unicode;
5740 if (string + bytes > end)
5741 break;
5743 /* Change representation to figure out whether
5744 * it is a single- or double-width character. */
5746 unicode = utf8_to_unicode(string, bytes);
5747 /* FIXME: Graceful handling of invalid unicode character. */
5748 if (!unicode)
5749 break;
5751 ucwidth = unicode_width(unicode);
5752 *width += ucwidth;
5753 if (*width > max_width) {
5754 *trimmed = 1;
5755 *width -= ucwidth;
5756 if (reserve && *width == max_width) {
5757 string -= last_bytes;
5758 *width -= last_ucwidth;
5759 }
5760 break;
5761 }
5763 string += bytes;
5764 last_bytes = bytes;
5765 last_ucwidth = ucwidth;
5766 }
5768 return string - start;
5769 }
5772 /*
5773 * Status management
5774 */
5776 /* Whether or not the curses interface has been initialized. */
5777 static bool cursed = FALSE;
5779 /* The status window is used for polling keystrokes. */
5780 static WINDOW *status_win;
5782 static bool status_empty = TRUE;
5784 /* Update status and title window. */
5785 static void
5786 report(const char *msg, ...)
5787 {
5788 struct view *view = display[current_view];
5790 if (input_mode)
5791 return;
5793 if (!view) {
5794 char buf[SIZEOF_STR];
5795 va_list args;
5797 va_start(args, msg);
5798 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5799 buf[sizeof(buf) - 1] = 0;
5800 buf[sizeof(buf) - 2] = '.';
5801 buf[sizeof(buf) - 3] = '.';
5802 buf[sizeof(buf) - 4] = '.';
5803 }
5804 va_end(args);
5805 die("%s", buf);
5806 }
5808 if (!status_empty || *msg) {
5809 va_list args;
5811 va_start(args, msg);
5813 wmove(status_win, 0, 0);
5814 if (*msg) {
5815 vwprintw(status_win, msg, args);
5816 status_empty = FALSE;
5817 } else {
5818 status_empty = TRUE;
5819 }
5820 wclrtoeol(status_win);
5821 wrefresh(status_win);
5823 va_end(args);
5824 }
5826 update_view_title(view);
5827 update_display_cursor(view);
5828 }
5830 /* Controls when nodelay should be in effect when polling user input. */
5831 static void
5832 set_nonblocking_input(bool loading)
5833 {
5834 static unsigned int loading_views;
5836 if ((loading == FALSE && loading_views-- == 1) ||
5837 (loading == TRUE && loading_views++ == 0))
5838 nodelay(status_win, loading);
5839 }
5841 static void
5842 init_display(void)
5843 {
5844 int x, y;
5846 /* Initialize the curses library */
5847 if (isatty(STDIN_FILENO)) {
5848 cursed = !!initscr();
5849 opt_tty = stdin;
5850 } else {
5851 /* Leave stdin and stdout alone when acting as a pager. */
5852 opt_tty = fopen("/dev/tty", "r+");
5853 if (!opt_tty)
5854 die("Failed to open /dev/tty");
5855 cursed = !!newterm(NULL, opt_tty, opt_tty);
5856 }
5858 if (!cursed)
5859 die("Failed to initialize curses");
5861 nonl(); /* Tell curses not to do NL->CR/NL on output */
5862 cbreak(); /* Take input chars one at a time, no wait for \n */
5863 noecho(); /* Don't echo input */
5864 leaveok(stdscr, TRUE);
5866 if (has_colors())
5867 init_colors();
5869 getmaxyx(stdscr, y, x);
5870 status_win = newwin(1, 0, y - 1, 0);
5871 if (!status_win)
5872 die("Failed to create status window");
5874 /* Enable keyboard mapping */
5875 keypad(status_win, TRUE);
5876 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5878 TABSIZE = opt_tab_size;
5879 if (opt_line_graphics) {
5880 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5881 }
5882 }
5884 static bool
5885 prompt_yesno(const char *prompt)
5886 {
5887 enum { WAIT, STOP, CANCEL } status = WAIT;
5888 bool answer = FALSE;
5890 while (status == WAIT) {
5891 struct view *view;
5892 int i, key;
5894 input_mode = TRUE;
5896 foreach_view (view, i)
5897 update_view(view);
5899 input_mode = FALSE;
5901 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
5902 wclrtoeol(status_win);
5904 /* Refresh, accept single keystroke of input */
5905 key = wgetch(status_win);
5906 switch (key) {
5907 case ERR:
5908 break;
5910 case 'y':
5911 case 'Y':
5912 answer = TRUE;
5913 status = STOP;
5914 break;
5916 case KEY_ESC:
5917 case KEY_RETURN:
5918 case KEY_ENTER:
5919 case KEY_BACKSPACE:
5920 case 'n':
5921 case 'N':
5922 case '\n':
5923 default:
5924 answer = FALSE;
5925 status = CANCEL;
5926 }
5927 }
5929 /* Clear the status window */
5930 status_empty = FALSE;
5931 report("");
5933 return answer;
5934 }
5936 static char *
5937 read_prompt(const char *prompt)
5938 {
5939 enum { READING, STOP, CANCEL } status = READING;
5940 static char buf[SIZEOF_STR];
5941 int pos = 0;
5943 while (status == READING) {
5944 struct view *view;
5945 int i, key;
5947 input_mode = TRUE;
5949 foreach_view (view, i)
5950 update_view(view);
5952 input_mode = FALSE;
5954 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5955 wclrtoeol(status_win);
5957 /* Refresh, accept single keystroke of input */
5958 key = wgetch(status_win);
5959 switch (key) {
5960 case KEY_RETURN:
5961 case KEY_ENTER:
5962 case '\n':
5963 status = pos ? STOP : CANCEL;
5964 break;
5966 case KEY_BACKSPACE:
5967 if (pos > 0)
5968 pos--;
5969 else
5970 status = CANCEL;
5971 break;
5973 case KEY_ESC:
5974 status = CANCEL;
5975 break;
5977 case ERR:
5978 break;
5980 default:
5981 if (pos >= sizeof(buf)) {
5982 report("Input string too long");
5983 return NULL;
5984 }
5986 if (isprint(key))
5987 buf[pos++] = (char) key;
5988 }
5989 }
5991 /* Clear the status window */
5992 status_empty = FALSE;
5993 report("");
5995 if (status == CANCEL)
5996 return NULL;
5998 buf[pos++] = 0;
6000 return buf;
6001 }
6003 /*
6004 * Repository properties
6005 */
6007 static int
6008 git_properties(const char **argv, const char *separators,
6009 int (*read_property)(char *, size_t, char *, size_t))
6010 {
6011 struct io io = {};
6013 if (init_io_rd(&io, argv, NULL, FORMAT_NONE))
6014 return read_properties(&io, separators, read_property);
6015 return ERR;
6016 }
6018 static struct ref *refs = NULL;
6019 static size_t refs_alloc = 0;
6020 static size_t refs_size = 0;
6022 /* Id <-> ref store */
6023 static struct ref ***id_refs = NULL;
6024 static size_t id_refs_alloc = 0;
6025 static size_t id_refs_size = 0;
6027 static int
6028 compare_refs(const void *ref1_, const void *ref2_)
6029 {
6030 const struct ref *ref1 = *(const struct ref **)ref1_;
6031 const struct ref *ref2 = *(const struct ref **)ref2_;
6033 if (ref1->tag != ref2->tag)
6034 return ref2->tag - ref1->tag;
6035 if (ref1->ltag != ref2->ltag)
6036 return ref2->ltag - ref2->ltag;
6037 if (ref1->head != ref2->head)
6038 return ref2->head - ref1->head;
6039 if (ref1->tracked != ref2->tracked)
6040 return ref2->tracked - ref1->tracked;
6041 if (ref1->remote != ref2->remote)
6042 return ref2->remote - ref1->remote;
6043 return strcmp(ref1->name, ref2->name);
6044 }
6046 static struct ref **
6047 get_refs(const char *id)
6048 {
6049 struct ref ***tmp_id_refs;
6050 struct ref **ref_list = NULL;
6051 size_t ref_list_alloc = 0;
6052 size_t ref_list_size = 0;
6053 size_t i;
6055 for (i = 0; i < id_refs_size; i++)
6056 if (!strcmp(id, id_refs[i][0]->id))
6057 return id_refs[i];
6059 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6060 sizeof(*id_refs));
6061 if (!tmp_id_refs)
6062 return NULL;
6064 id_refs = tmp_id_refs;
6066 for (i = 0; i < refs_size; i++) {
6067 struct ref **tmp;
6069 if (strcmp(id, refs[i].id))
6070 continue;
6072 tmp = realloc_items(ref_list, &ref_list_alloc,
6073 ref_list_size + 1, sizeof(*ref_list));
6074 if (!tmp) {
6075 if (ref_list)
6076 free(ref_list);
6077 return NULL;
6078 }
6080 ref_list = tmp;
6081 ref_list[ref_list_size] = &refs[i];
6082 /* XXX: The properties of the commit chains ensures that we can
6083 * safely modify the shared ref. The repo references will
6084 * always be similar for the same id. */
6085 ref_list[ref_list_size]->next = 1;
6087 ref_list_size++;
6088 }
6090 if (ref_list) {
6091 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6092 ref_list[ref_list_size - 1]->next = 0;
6093 id_refs[id_refs_size++] = ref_list;
6094 }
6096 return ref_list;
6097 }
6099 static int
6100 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6101 {
6102 struct ref *ref;
6103 bool tag = FALSE;
6104 bool ltag = FALSE;
6105 bool remote = FALSE;
6106 bool tracked = FALSE;
6107 bool check_replace = FALSE;
6108 bool head = FALSE;
6110 if (!prefixcmp(name, "refs/tags/")) {
6111 if (!suffixcmp(name, namelen, "^{}")) {
6112 namelen -= 3;
6113 name[namelen] = 0;
6114 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6115 check_replace = TRUE;
6116 } else {
6117 ltag = TRUE;
6118 }
6120 tag = TRUE;
6121 namelen -= STRING_SIZE("refs/tags/");
6122 name += STRING_SIZE("refs/tags/");
6124 } else if (!prefixcmp(name, "refs/remotes/")) {
6125 remote = TRUE;
6126 namelen -= STRING_SIZE("refs/remotes/");
6127 name += STRING_SIZE("refs/remotes/");
6128 tracked = !strcmp(opt_remote, name);
6130 } else if (!prefixcmp(name, "refs/heads/")) {
6131 namelen -= STRING_SIZE("refs/heads/");
6132 name += STRING_SIZE("refs/heads/");
6133 head = !strncmp(opt_head, name, namelen);
6135 } else if (!strcmp(name, "HEAD")) {
6136 string_ncopy(opt_head_rev, id, idlen);
6137 return OK;
6138 }
6140 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6141 /* it's an annotated tag, replace the previous sha1 with the
6142 * resolved commit id; relies on the fact git-ls-remote lists
6143 * the commit id of an annotated tag right before the commit id
6144 * it points to. */
6145 refs[refs_size - 1].ltag = ltag;
6146 string_copy_rev(refs[refs_size - 1].id, id);
6148 return OK;
6149 }
6150 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6151 if (!refs)
6152 return ERR;
6154 ref = &refs[refs_size++];
6155 ref->name = malloc(namelen + 1);
6156 if (!ref->name)
6157 return ERR;
6159 strncpy(ref->name, name, namelen);
6160 ref->name[namelen] = 0;
6161 ref->head = head;
6162 ref->tag = tag;
6163 ref->ltag = ltag;
6164 ref->remote = remote;
6165 ref->tracked = tracked;
6166 string_copy_rev(ref->id, id);
6168 return OK;
6169 }
6171 static int
6172 load_refs(void)
6173 {
6174 static const char *ls_remote_argv[SIZEOF_ARG] = {
6175 "git", "ls-remote", ".", NULL
6176 };
6177 static bool init = FALSE;
6179 if (!init) {
6180 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6181 init = TRUE;
6182 }
6184 if (!*opt_git_dir)
6185 return OK;
6187 while (refs_size > 0)
6188 free(refs[--refs_size].name);
6189 while (id_refs_size > 0)
6190 free(id_refs[--id_refs_size]);
6192 return git_properties(ls_remote_argv, "\t", read_ref);
6193 }
6195 static int
6196 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6197 {
6198 if (!strcmp(name, "i18n.commitencoding"))
6199 string_ncopy(opt_encoding, value, valuelen);
6201 if (!strcmp(name, "core.editor"))
6202 string_ncopy(opt_editor, value, valuelen);
6204 /* branch.<head>.remote */
6205 if (*opt_head &&
6206 !strncmp(name, "branch.", 7) &&
6207 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6208 !strcmp(name + 7 + strlen(opt_head), ".remote"))
6209 string_ncopy(opt_remote, value, valuelen);
6211 if (*opt_head && *opt_remote &&
6212 !strncmp(name, "branch.", 7) &&
6213 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6214 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
6215 size_t from = strlen(opt_remote);
6217 if (!prefixcmp(value, "refs/heads/")) {
6218 value += STRING_SIZE("refs/heads/");
6219 valuelen -= STRING_SIZE("refs/heads/");
6220 }
6222 if (!string_format_from(opt_remote, &from, "/%s", value))
6223 opt_remote[0] = 0;
6224 }
6226 return OK;
6227 }
6229 static int
6230 load_git_config(void)
6231 {
6232 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6234 return git_properties(config_list_argv, "=", read_repo_config_option);
6235 }
6237 static int
6238 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6239 {
6240 if (!opt_git_dir[0]) {
6241 string_ncopy(opt_git_dir, name, namelen);
6243 } else if (opt_is_inside_work_tree == -1) {
6244 /* This can be 3 different values depending on the
6245 * version of git being used. If git-rev-parse does not
6246 * understand --is-inside-work-tree it will simply echo
6247 * the option else either "true" or "false" is printed.
6248 * Default to true for the unknown case. */
6249 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6250 } else {
6251 string_ncopy(opt_cdup, name, namelen);
6252 }
6254 return OK;
6255 }
6257 static int
6258 load_repo_info(void)
6259 {
6260 const char *head_argv[] = {
6261 "git", "symbolic-ref", "HEAD", NULL
6262 };
6263 const char *rev_parse_argv[] = {
6264 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6265 "--show-cdup", NULL
6266 };
6268 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6269 chomp_string(opt_head);
6270 if (!prefixcmp(opt_head, "refs/heads/")) {
6271 char *offset = opt_head + STRING_SIZE("refs/heads/");
6273 memmove(opt_head, offset, strlen(offset) + 1);
6274 }
6275 }
6277 return git_properties(rev_parse_argv, "=", read_repo_info);
6278 }
6280 static int
6281 read_properties(struct io *io, const char *separators,
6282 int (*read_property)(char *, size_t, char *, size_t))
6283 {
6284 char *name;
6285 int state = OK;
6287 if (!start_io(io))
6288 return ERR;
6290 while (state == OK && (name = io_get(io, '\n', TRUE))) {
6291 char *value;
6292 size_t namelen;
6293 size_t valuelen;
6295 name = chomp_string(name);
6296 namelen = strcspn(name, separators);
6298 if (name[namelen]) {
6299 name[namelen] = 0;
6300 value = chomp_string(name + namelen + 1);
6301 valuelen = strlen(value);
6303 } else {
6304 value = "";
6305 valuelen = 0;
6306 }
6308 state = read_property(name, namelen, value, valuelen);
6309 }
6311 if (state != ERR && io_error(io))
6312 state = ERR;
6313 done_io(io);
6315 return state;
6316 }
6319 /*
6320 * Main
6321 */
6323 static void __NORETURN
6324 quit(int sig)
6325 {
6326 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6327 if (cursed)
6328 endwin();
6329 exit(0);
6330 }
6332 static void __NORETURN
6333 die(const char *err, ...)
6334 {
6335 va_list args;
6337 endwin();
6339 va_start(args, err);
6340 fputs("tig: ", stderr);
6341 vfprintf(stderr, err, args);
6342 fputs("\n", stderr);
6343 va_end(args);
6345 exit(1);
6346 }
6348 static void
6349 warn(const char *msg, ...)
6350 {
6351 va_list args;
6353 va_start(args, msg);
6354 fputs("tig warning: ", stderr);
6355 vfprintf(stderr, msg, args);
6356 fputs("\n", stderr);
6357 va_end(args);
6358 }
6360 int
6361 main(int argc, const char *argv[])
6362 {
6363 const char **run_argv = NULL;
6364 struct view *view;
6365 enum request request;
6366 size_t i;
6368 signal(SIGINT, quit);
6370 if (setlocale(LC_ALL, "")) {
6371 char *codeset = nl_langinfo(CODESET);
6373 string_ncopy(opt_codeset, codeset, strlen(codeset));
6374 }
6376 if (load_repo_info() == ERR)
6377 die("Failed to load repo info.");
6379 if (load_options() == ERR)
6380 die("Failed to load user config.");
6382 if (load_git_config() == ERR)
6383 die("Failed to load repo config.");
6385 request = parse_options(argc, argv, &run_argv);
6386 if (request == REQ_NONE)
6387 return 0;
6389 /* Require a git repository unless when running in pager mode. */
6390 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6391 die("Not a git repository");
6393 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6394 opt_utf8 = FALSE;
6396 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6397 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6398 if (opt_iconv == ICONV_NONE)
6399 die("Failed to initialize character set conversion");
6400 }
6402 if (load_refs() == ERR)
6403 die("Failed to load refs.");
6405 foreach_view (view, i)
6406 argv_from_env(view->ops->argv, view->cmd_env);
6408 init_display();
6410 if (request == REQ_VIEW_PAGER || run_argv) {
6411 if (request == REQ_VIEW_PAGER)
6412 io_open(&VIEW(request)->io, "");
6413 else if (!prepare_update(VIEW(request), run_argv, NULL, FORMAT_NONE))
6414 die("Failed to format arguments");
6415 open_view(NULL, request, OPEN_PREPARED);
6416 request = REQ_NONE;
6417 }
6419 while (view_driver(display[current_view], request)) {
6420 int key;
6421 int i;
6423 foreach_view (view, i)
6424 update_view(view);
6425 view = display[current_view];
6427 /* Refresh, accept single keystroke of input */
6428 key = wgetch(status_win);
6430 /* wgetch() with nodelay() enabled returns ERR when there's no
6431 * input. */
6432 if (key == ERR) {
6433 request = REQ_NONE;
6434 continue;
6435 }
6437 request = get_keybinding(view->keymap, key);
6439 /* Some low-level request handling. This keeps access to
6440 * status_win restricted. */
6441 switch (request) {
6442 case REQ_PROMPT:
6443 {
6444 char *cmd = read_prompt(":");
6446 if (cmd) {
6447 struct view *next = VIEW(REQ_VIEW_PAGER);
6448 const char *argv[SIZEOF_ARG] = { "git" };
6449 int argc = 1;
6451 /* When running random commands, initially show the
6452 * command in the title. However, it maybe later be
6453 * overwritten if a commit line is selected. */
6454 string_ncopy(next->ref, cmd, strlen(cmd));
6456 if (!argv_from_string(argv, &argc, cmd)) {
6457 report("Too many arguments");
6458 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
6459 report("Failed to format command");
6460 } else {
6461 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6462 }
6463 }
6465 request = REQ_NONE;
6466 break;
6467 }
6468 case REQ_SEARCH:
6469 case REQ_SEARCH_BACK:
6470 {
6471 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6472 char *search = read_prompt(prompt);
6474 if (search)
6475 string_ncopy(opt_search, search, strlen(search));
6476 else
6477 request = REQ_NONE;
6478 break;
6479 }
6480 case REQ_SCREEN_RESIZE:
6481 {
6482 int height, width;
6484 getmaxyx(stdscr, height, width);
6486 /* Resize the status view and let the view driver take
6487 * care of resizing the displayed views. */
6488 wresize(status_win, 1, width);
6489 mvwin(status_win, height - 1, 0);
6490 wrefresh(status_win);
6491 break;
6492 }
6493 default:
6494 break;
6495 }
6496 }
6498 quit(0);
6500 return 0;
6501 }