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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 int load_refs(void);
74 #define ABS(x) ((x) >= 0 ? (x) : -(x))
75 #define MIN(x, y) ((x) < (y) ? (x) : (y))
77 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
78 #define STRING_SIZE(x) (sizeof(x) - 1)
80 #define SIZEOF_STR 1024 /* Default string size. */
81 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
82 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
83 #define SIZEOF_ARG 32 /* Default argument array size. */
85 /* Revision graph */
87 #define REVGRAPH_INIT 'I'
88 #define REVGRAPH_MERGE 'M'
89 #define REVGRAPH_BRANCH '+'
90 #define REVGRAPH_COMMIT '*'
91 #define REVGRAPH_BOUND '^'
93 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
95 /* This color name can be used to refer to the default term colors. */
96 #define COLOR_DEFAULT (-1)
98 #define ICONV_NONE ((iconv_t) -1)
99 #ifndef ICONV_CONST
100 #define ICONV_CONST /* nothing */
101 #endif
103 /* The format and size of the date column in the main view. */
104 #define DATE_FORMAT "%Y-%m-%d %H:%M"
105 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
107 #define AUTHOR_COLS 20
108 #define ID_COLS 8
110 /* The default interval between line numbers. */
111 #define NUMBER_INTERVAL 5
113 #define TAB_SIZE 8
115 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
117 #define NULL_ID "0000000000000000000000000000000000000000"
119 #ifndef GIT_CONFIG
120 #define GIT_CONFIG "config"
121 #endif
123 /* Some ascii-shorthands fitted into the ncurses namespace. */
124 #define KEY_TAB '\t'
125 #define KEY_RETURN '\r'
126 #define KEY_ESC 27
129 struct ref {
130 char *name; /* Ref name; tag or head names are shortened. */
131 char id[SIZEOF_REV]; /* Commit SHA1 ID */
132 unsigned int head:1; /* Is it the current HEAD? */
133 unsigned int tag:1; /* Is it a tag? */
134 unsigned int ltag:1; /* If so, is the tag local? */
135 unsigned int remote:1; /* Is it a remote ref? */
136 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
137 unsigned int next:1; /* For ref lists: are there more refs? */
138 };
140 static struct ref **get_refs(const char *id);
142 enum format_flags {
143 FORMAT_ALL, /* Perform replacement in all arguments. */
144 FORMAT_DASH, /* Perform replacement up until "--". */
145 FORMAT_NONE /* No replacement should be performed. */
146 };
148 static bool format_argv(const char *dst[], const char *src[], enum format_flags flags);
150 struct int_map {
151 const char *name;
152 int namelen;
153 int value;
154 };
156 static int
157 set_from_int_map(struct int_map *map, size_t map_size,
158 int *value, const char *name, int namelen)
159 {
161 int i;
163 for (i = 0; i < map_size; i++)
164 if (namelen == map[i].namelen &&
165 !strncasecmp(name, map[i].name, namelen)) {
166 *value = map[i].value;
167 return OK;
168 }
170 return ERR;
171 }
173 enum input_status {
174 INPUT_OK,
175 INPUT_SKIP,
176 INPUT_STOP,
177 INPUT_CANCEL
178 };
180 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
182 static char *prompt_input(const char *prompt, input_handler handler, void *data);
183 static bool prompt_yesno(const char *prompt);
185 /*
186 * String helpers
187 */
189 static inline void
190 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
191 {
192 if (srclen > dstlen - 1)
193 srclen = dstlen - 1;
195 strncpy(dst, src, srclen);
196 dst[srclen] = 0;
197 }
199 /* Shorthands for safely copying into a fixed buffer. */
201 #define string_copy(dst, src) \
202 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
204 #define string_ncopy(dst, src, srclen) \
205 string_ncopy_do(dst, sizeof(dst), src, srclen)
207 #define string_copy_rev(dst, src) \
208 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
210 #define string_add(dst, from, src) \
211 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
213 static char *
214 chomp_string(char *name)
215 {
216 int namelen;
218 while (isspace(*name))
219 name++;
221 namelen = strlen(name) - 1;
222 while (namelen > 0 && isspace(name[namelen]))
223 name[namelen--] = 0;
225 return name;
226 }
228 static bool
229 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
230 {
231 va_list args;
232 size_t pos = bufpos ? *bufpos : 0;
234 va_start(args, fmt);
235 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
236 va_end(args);
238 if (bufpos)
239 *bufpos = pos;
241 return pos >= bufsize ? FALSE : TRUE;
242 }
244 #define string_format(buf, fmt, args...) \
245 string_nformat(buf, sizeof(buf), NULL, fmt, args)
247 #define string_format_from(buf, from, fmt, args...) \
248 string_nformat(buf, sizeof(buf), from, fmt, args)
250 static int
251 string_enum_compare(const char *str1, const char *str2, int len)
252 {
253 size_t i;
255 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
257 /* Diff-Header == DIFF_HEADER */
258 for (i = 0; i < len; i++) {
259 if (toupper(str1[i]) == toupper(str2[i]))
260 continue;
262 if (string_enum_sep(str1[i]) &&
263 string_enum_sep(str2[i]))
264 continue;
266 return str1[i] - str2[i];
267 }
269 return 0;
270 }
272 #define prefixcmp(str1, str2) \
273 strncmp(str1, str2, STRING_SIZE(str2))
275 static inline int
276 suffixcmp(const char *str, int slen, const char *suffix)
277 {
278 size_t len = slen >= 0 ? slen : strlen(str);
279 size_t suffixlen = strlen(suffix);
281 return suffixlen < len ? strcmp(str + len - suffixlen, suffix) : -1;
282 }
285 static bool
286 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
287 {
288 int valuelen;
290 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
291 bool advance = cmd[valuelen] != 0;
293 cmd[valuelen] = 0;
294 argv[(*argc)++] = chomp_string(cmd);
295 cmd = chomp_string(cmd + valuelen + advance);
296 }
298 if (*argc < SIZEOF_ARG)
299 argv[*argc] = NULL;
300 return *argc < SIZEOF_ARG;
301 }
303 static void
304 argv_from_env(const char **argv, const char *name)
305 {
306 char *env = argv ? getenv(name) : NULL;
307 int argc = 0;
309 if (env && *env)
310 env = strdup(env);
311 if (env && !argv_from_string(argv, &argc, env))
312 die("Too many arguments in the `%s` environment variable", name);
313 }
316 /*
317 * Executing external commands.
318 */
320 enum io_type {
321 IO_FD, /* File descriptor based IO. */
322 IO_BG, /* Execute command in the background. */
323 IO_FG, /* Execute command with same std{in,out,err}. */
324 IO_RD, /* Read only fork+exec IO. */
325 IO_WR, /* Write only fork+exec IO. */
326 IO_AP, /* Append fork+exec output to file. */
327 };
329 struct io {
330 enum io_type type; /* The requested type of pipe. */
331 const char *dir; /* Directory from which to execute. */
332 pid_t pid; /* Pipe for reading or writing. */
333 int pipe; /* Pipe end for reading or writing. */
334 int error; /* Error status. */
335 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
336 char *buf; /* Read buffer. */
337 size_t bufalloc; /* Allocated buffer size. */
338 size_t bufsize; /* Buffer content size. */
339 char *bufpos; /* Current buffer position. */
340 unsigned int eof:1; /* Has end of file been reached. */
341 };
343 static void
344 reset_io(struct io *io)
345 {
346 io->pipe = -1;
347 io->pid = 0;
348 io->buf = io->bufpos = NULL;
349 io->bufalloc = io->bufsize = 0;
350 io->error = 0;
351 io->eof = 0;
352 }
354 static void
355 init_io(struct io *io, const char *dir, enum io_type type)
356 {
357 reset_io(io);
358 io->type = type;
359 io->dir = dir;
360 }
362 static bool
363 init_io_rd(struct io *io, const char *argv[], const char *dir,
364 enum format_flags flags)
365 {
366 init_io(io, dir, IO_RD);
367 return format_argv(io->argv, argv, flags);
368 }
370 static bool
371 io_open(struct io *io, const char *name)
372 {
373 init_io(io, NULL, IO_FD);
374 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
375 return io->pipe != -1;
376 }
378 static bool
379 kill_io(struct io *io)
380 {
381 return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
382 }
384 static bool
385 done_io(struct io *io)
386 {
387 pid_t pid = io->pid;
389 if (io->pipe != -1)
390 close(io->pipe);
391 free(io->buf);
392 reset_io(io);
394 while (pid > 0) {
395 int status;
396 pid_t waiting = waitpid(pid, &status, 0);
398 if (waiting < 0) {
399 if (errno == EINTR)
400 continue;
401 report("waitpid failed (%s)", strerror(errno));
402 return FALSE;
403 }
405 return waiting == pid &&
406 !WIFSIGNALED(status) &&
407 WIFEXITED(status) &&
408 !WEXITSTATUS(status);
409 }
411 return TRUE;
412 }
414 static bool
415 start_io(struct io *io)
416 {
417 int pipefds[2] = { -1, -1 };
419 if (io->type == IO_FD)
420 return TRUE;
422 if ((io->type == IO_RD || io->type == IO_WR) &&
423 pipe(pipefds) < 0)
424 return FALSE;
425 else if (io->type == IO_AP)
426 pipefds[1] = io->pipe;
428 if ((io->pid = fork())) {
429 if (pipefds[!(io->type == IO_WR)] != -1)
430 close(pipefds[!(io->type == IO_WR)]);
431 if (io->pid != -1) {
432 io->pipe = pipefds[!!(io->type == IO_WR)];
433 return TRUE;
434 }
436 } else {
437 if (io->type != IO_FG) {
438 int devnull = open("/dev/null", O_RDWR);
439 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
440 int writefd = (io->type == IO_RD || io->type == IO_AP)
441 ? pipefds[1] : devnull;
443 dup2(readfd, STDIN_FILENO);
444 dup2(writefd, STDOUT_FILENO);
445 dup2(devnull, STDERR_FILENO);
447 close(devnull);
448 if (pipefds[0] != -1)
449 close(pipefds[0]);
450 if (pipefds[1] != -1)
451 close(pipefds[1]);
452 }
454 if (io->dir && *io->dir && chdir(io->dir) == -1)
455 die("Failed to change directory: %s", strerror(errno));
457 execvp(io->argv[0], (char *const*) io->argv);
458 die("Failed to execute program: %s", strerror(errno));
459 }
461 if (pipefds[!!(io->type == IO_WR)] != -1)
462 close(pipefds[!!(io->type == IO_WR)]);
463 return FALSE;
464 }
466 static bool
467 run_io(struct io *io, const char **argv, const char *dir, enum io_type type)
468 {
469 init_io(io, dir, type);
470 if (!format_argv(io->argv, argv, FORMAT_NONE))
471 return FALSE;
472 return start_io(io);
473 }
475 static int
476 run_io_do(struct io *io)
477 {
478 return start_io(io) && done_io(io);
479 }
481 static int
482 run_io_bg(const char **argv)
483 {
484 struct io io = {};
486 init_io(&io, NULL, IO_BG);
487 if (!format_argv(io.argv, argv, FORMAT_NONE))
488 return FALSE;
489 return run_io_do(&io);
490 }
492 static bool
493 run_io_fg(const char **argv, const char *dir)
494 {
495 struct io io = {};
497 init_io(&io, dir, IO_FG);
498 if (!format_argv(io.argv, argv, FORMAT_NONE))
499 return FALSE;
500 return run_io_do(&io);
501 }
503 static bool
504 run_io_append(const char **argv, enum format_flags flags, int fd)
505 {
506 struct io io = {};
508 init_io(&io, NULL, IO_AP);
509 io.pipe = fd;
510 if (format_argv(io.argv, argv, flags))
511 return run_io_do(&io);
512 close(fd);
513 return FALSE;
514 }
516 static bool
517 run_io_rd(struct io *io, const char **argv, enum format_flags flags)
518 {
519 return init_io_rd(io, argv, NULL, flags) && start_io(io);
520 }
522 static bool
523 io_eof(struct io *io)
524 {
525 return io->eof;
526 }
528 static int
529 io_error(struct io *io)
530 {
531 return io->error;
532 }
534 static bool
535 io_strerror(struct io *io)
536 {
537 return strerror(io->error);
538 }
540 static bool
541 io_can_read(struct io *io)
542 {
543 struct timeval tv = { 0, 500 };
544 fd_set fds;
546 FD_ZERO(&fds);
547 FD_SET(io->pipe, &fds);
549 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
550 }
552 static ssize_t
553 io_read(struct io *io, void *buf, size_t bufsize)
554 {
555 do {
556 ssize_t readsize = read(io->pipe, buf, bufsize);
558 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
559 continue;
560 else if (readsize == -1)
561 io->error = errno;
562 else if (readsize == 0)
563 io->eof = 1;
564 return readsize;
565 } while (1);
566 }
568 static char *
569 io_get(struct io *io, int c, bool can_read)
570 {
571 char *eol;
572 ssize_t readsize;
574 if (!io->buf) {
575 io->buf = io->bufpos = malloc(BUFSIZ);
576 if (!io->buf)
577 return NULL;
578 io->bufalloc = BUFSIZ;
579 io->bufsize = 0;
580 }
582 while (TRUE) {
583 if (io->bufsize > 0) {
584 eol = memchr(io->bufpos, c, io->bufsize);
585 if (eol) {
586 char *line = io->bufpos;
588 *eol = 0;
589 io->bufpos = eol + 1;
590 io->bufsize -= io->bufpos - line;
591 return line;
592 }
593 }
595 if (io_eof(io)) {
596 if (io->bufsize) {
597 io->bufpos[io->bufsize] = 0;
598 io->bufsize = 0;
599 return io->bufpos;
600 }
601 return NULL;
602 }
604 if (!can_read)
605 return NULL;
607 if (io->bufsize > 0 && io->bufpos > io->buf)
608 memmove(io->buf, io->bufpos, io->bufsize);
610 io->bufpos = io->buf;
611 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
612 if (io_error(io))
613 return NULL;
614 io->bufsize += readsize;
615 }
616 }
618 static bool
619 io_write(struct io *io, const void *buf, size_t bufsize)
620 {
621 size_t written = 0;
623 while (!io_error(io) && written < bufsize) {
624 ssize_t size;
626 size = write(io->pipe, buf + written, bufsize - written);
627 if (size < 0 && (errno == EAGAIN || errno == EINTR))
628 continue;
629 else if (size == -1)
630 io->error = errno;
631 else
632 written += size;
633 }
635 return written == bufsize;
636 }
638 static bool
639 run_io_buf(const char **argv, char buf[], size_t bufsize)
640 {
641 struct io io = {};
642 bool error;
644 if (!run_io_rd(&io, argv, FORMAT_NONE))
645 return FALSE;
647 io.buf = io.bufpos = buf;
648 io.bufalloc = bufsize;
649 error = !io_get(&io, '\n', TRUE) && io_error(&io);
650 io.buf = NULL;
652 return done_io(&io) || error;
653 }
655 static int read_properties(struct io *io, const char *separators, int (*read)(char *, size_t, char *, size_t));
657 /*
658 * User requests
659 */
661 #define REQ_INFO \
662 /* XXX: Keep the view request first and in sync with views[]. */ \
663 REQ_GROUP("View switching") \
664 REQ_(VIEW_MAIN, "Show main view"), \
665 REQ_(VIEW_DIFF, "Show diff view"), \
666 REQ_(VIEW_LOG, "Show log view"), \
667 REQ_(VIEW_TREE, "Show tree view"), \
668 REQ_(VIEW_BLOB, "Show blob view"), \
669 REQ_(VIEW_BLAME, "Show blame view"), \
670 REQ_(VIEW_HELP, "Show help page"), \
671 REQ_(VIEW_PAGER, "Show pager view"), \
672 REQ_(VIEW_STATUS, "Show status view"), \
673 REQ_(VIEW_STAGE, "Show stage view"), \
674 \
675 REQ_GROUP("View manipulation") \
676 REQ_(ENTER, "Enter current line and scroll"), \
677 REQ_(NEXT, "Move to next"), \
678 REQ_(PREVIOUS, "Move to previous"), \
679 REQ_(PARENT, "Move to parent"), \
680 REQ_(VIEW_NEXT, "Move focus to next view"), \
681 REQ_(REFRESH, "Reload and refresh"), \
682 REQ_(MAXIMIZE, "Maximize the current view"), \
683 REQ_(VIEW_CLOSE, "Close the current view"), \
684 REQ_(QUIT, "Close all views and quit"), \
685 \
686 REQ_GROUP("View specific requests") \
687 REQ_(STATUS_UPDATE, "Update file status"), \
688 REQ_(STATUS_REVERT, "Revert file changes"), \
689 REQ_(STATUS_MERGE, "Merge file using external tool"), \
690 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
691 \
692 REQ_GROUP("Cursor navigation") \
693 REQ_(MOVE_UP, "Move cursor one line up"), \
694 REQ_(MOVE_DOWN, "Move cursor one line down"), \
695 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
696 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
697 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
698 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
699 \
700 REQ_GROUP("Scrolling") \
701 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
702 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
703 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
704 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
705 \
706 REQ_GROUP("Searching") \
707 REQ_(SEARCH, "Search the view"), \
708 REQ_(SEARCH_BACK, "Search backwards in the view"), \
709 REQ_(FIND_NEXT, "Find next search match"), \
710 REQ_(FIND_PREV, "Find previous search match"), \
711 \
712 REQ_GROUP("Option manipulation") \
713 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
714 REQ_(TOGGLE_DATE, "Toggle date display"), \
715 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
716 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
717 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
718 \
719 REQ_GROUP("Misc") \
720 REQ_(PROMPT, "Bring up the prompt"), \
721 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
722 REQ_(SHOW_VERSION, "Show version information"), \
723 REQ_(STOP_LOADING, "Stop all loading views"), \
724 REQ_(EDIT, "Open in editor"), \
725 REQ_(NONE, "Do nothing")
728 /* User action requests. */
729 enum request {
730 #define REQ_GROUP(help)
731 #define REQ_(req, help) REQ_##req
733 /* Offset all requests to avoid conflicts with ncurses getch values. */
734 REQ_OFFSET = KEY_MAX + 1,
735 REQ_INFO
737 #undef REQ_GROUP
738 #undef REQ_
739 };
741 struct request_info {
742 enum request request;
743 const char *name;
744 int namelen;
745 const char *help;
746 };
748 static struct request_info req_info[] = {
749 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
750 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
751 REQ_INFO
752 #undef REQ_GROUP
753 #undef REQ_
754 };
756 static enum request
757 get_request(const char *name)
758 {
759 int namelen = strlen(name);
760 int i;
762 for (i = 0; i < ARRAY_SIZE(req_info); i++)
763 if (req_info[i].namelen == namelen &&
764 !string_enum_compare(req_info[i].name, name, namelen))
765 return req_info[i].request;
767 return REQ_NONE;
768 }
771 /*
772 * Options
773 */
775 static const char usage[] =
776 "tig " TIG_VERSION " (" __DATE__ ")\n"
777 "\n"
778 "Usage: tig [options] [revs] [--] [paths]\n"
779 " or: tig show [options] [revs] [--] [paths]\n"
780 " or: tig blame [rev] path\n"
781 " or: tig status\n"
782 " or: tig < [git command output]\n"
783 "\n"
784 "Options:\n"
785 " -v, --version Show version and exit\n"
786 " -h, --help Show help message and exit";
788 /* Option and state variables. */
789 static bool opt_date = TRUE;
790 static bool opt_author = TRUE;
791 static bool opt_line_number = FALSE;
792 static bool opt_line_graphics = TRUE;
793 static bool opt_rev_graph = FALSE;
794 static bool opt_show_refs = TRUE;
795 static int opt_num_interval = NUMBER_INTERVAL;
796 static int opt_tab_size = TAB_SIZE;
797 static int opt_author_cols = AUTHOR_COLS-1;
798 static char opt_path[SIZEOF_STR] = "";
799 static char opt_file[SIZEOF_STR] = "";
800 static char opt_ref[SIZEOF_REF] = "";
801 static char opt_head[SIZEOF_REF] = "";
802 static char opt_head_rev[SIZEOF_REV] = "";
803 static char opt_remote[SIZEOF_REF] = "";
804 static char opt_encoding[20] = "UTF-8";
805 static bool opt_utf8 = TRUE;
806 static char opt_codeset[20] = "UTF-8";
807 static iconv_t opt_iconv = ICONV_NONE;
808 static char opt_search[SIZEOF_STR] = "";
809 static char opt_cdup[SIZEOF_STR] = "";
810 static char opt_prefix[SIZEOF_STR] = "";
811 static char opt_git_dir[SIZEOF_STR] = "";
812 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
813 static char opt_editor[SIZEOF_STR] = "";
814 static FILE *opt_tty = NULL;
816 #define is_initial_commit() (!*opt_head_rev)
817 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || !strcmp(opt_head_rev, (rev)))
819 static enum request
820 parse_options(int argc, const char *argv[], const char ***run_argv)
821 {
822 enum request request = REQ_VIEW_MAIN;
823 const char *subcommand;
824 bool seen_dashdash = FALSE;
825 /* XXX: This is vulnerable to the user overriding options
826 * required for the main view parser. */
827 static const char *custom_argv[SIZEOF_ARG] = {
828 "git", "log", "--no-color", "--pretty=raw", "--parents",
829 "--topo-order", NULL
830 };
831 int i, j = 6;
833 if (!isatty(STDIN_FILENO))
834 return REQ_VIEW_PAGER;
836 if (argc <= 1)
837 return REQ_VIEW_MAIN;
839 subcommand = argv[1];
840 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
841 if (!strcmp(subcommand, "-S"))
842 warn("`-S' has been deprecated; use `tig status' instead");
843 if (argc > 2)
844 warn("ignoring arguments after `%s'", subcommand);
845 return REQ_VIEW_STATUS;
847 } else if (!strcmp(subcommand, "blame")) {
848 if (argc <= 2 || argc > 4)
849 die("invalid number of options to blame\n\n%s", usage);
851 i = 2;
852 if (argc == 4) {
853 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
854 i++;
855 }
857 string_ncopy(opt_file, argv[i], strlen(argv[i]));
858 return REQ_VIEW_BLAME;
860 } else if (!strcmp(subcommand, "show")) {
861 request = REQ_VIEW_DIFF;
863 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
864 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
865 warn("`tig %s' has been deprecated", subcommand);
867 } else {
868 subcommand = NULL;
869 }
871 if (subcommand) {
872 custom_argv[1] = subcommand;
873 j = 2;
874 }
876 for (i = 1 + !!subcommand; i < argc; i++) {
877 const char *opt = argv[i];
879 if (seen_dashdash || !strcmp(opt, "--")) {
880 seen_dashdash = TRUE;
882 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
883 printf("tig version %s\n", TIG_VERSION);
884 return REQ_NONE;
886 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
887 printf("%s\n", usage);
888 return REQ_NONE;
889 }
891 custom_argv[j++] = opt;
892 if (j >= ARRAY_SIZE(custom_argv))
893 die("command too long");
894 }
896 custom_argv[j] = NULL;
897 *run_argv = custom_argv;
899 return request;
900 }
903 /*
904 * Line-oriented content detection.
905 */
907 #define LINE_INFO \
908 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
909 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
910 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
911 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
912 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
913 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
914 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
915 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
916 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
917 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
918 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
919 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
920 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
921 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
922 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
923 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
924 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
925 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
926 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
927 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
928 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
929 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
930 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
931 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
932 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
933 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
934 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
935 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
936 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
937 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
938 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
939 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
940 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
941 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
942 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
943 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
944 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
945 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
946 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
947 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
948 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
949 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
950 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
951 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
952 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
953 LINE(TREE_PARENT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
954 LINE(TREE_MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
955 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
956 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
957 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
958 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
959 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
960 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
961 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
962 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
963 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
965 enum line_type {
966 #define LINE(type, line, fg, bg, attr) \
967 LINE_##type
968 LINE_INFO,
969 LINE_NONE
970 #undef LINE
971 };
973 struct line_info {
974 const char *name; /* Option name. */
975 int namelen; /* Size of option name. */
976 const char *line; /* The start of line to match. */
977 int linelen; /* Size of string to match. */
978 int fg, bg, attr; /* Color and text attributes for the lines. */
979 };
981 static struct line_info line_info[] = {
982 #define LINE(type, line, fg, bg, attr) \
983 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
984 LINE_INFO
985 #undef LINE
986 };
988 static enum line_type
989 get_line_type(const char *line)
990 {
991 int linelen = strlen(line);
992 enum line_type type;
994 for (type = 0; type < ARRAY_SIZE(line_info); type++)
995 /* Case insensitive search matches Signed-off-by lines better. */
996 if (linelen >= line_info[type].linelen &&
997 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
998 return type;
1000 return LINE_DEFAULT;
1001 }
1003 static inline int
1004 get_line_attr(enum line_type type)
1005 {
1006 assert(type < ARRAY_SIZE(line_info));
1007 return COLOR_PAIR(type) | line_info[type].attr;
1008 }
1010 static struct line_info *
1011 get_line_info(const char *name)
1012 {
1013 size_t namelen = strlen(name);
1014 enum line_type type;
1016 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1017 if (namelen == line_info[type].namelen &&
1018 !string_enum_compare(line_info[type].name, name, namelen))
1019 return &line_info[type];
1021 return NULL;
1022 }
1024 static void
1025 init_colors(void)
1026 {
1027 int default_bg = line_info[LINE_DEFAULT].bg;
1028 int default_fg = line_info[LINE_DEFAULT].fg;
1029 enum line_type type;
1031 start_color();
1033 if (assume_default_colors(default_fg, default_bg) == ERR) {
1034 default_bg = COLOR_BLACK;
1035 default_fg = COLOR_WHITE;
1036 }
1038 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1039 struct line_info *info = &line_info[type];
1040 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1041 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1043 init_pair(type, fg, bg);
1044 }
1045 }
1047 struct line {
1048 enum line_type type;
1050 /* State flags */
1051 unsigned int selected:1;
1052 unsigned int dirty:1;
1053 unsigned int cleareol:1;
1055 void *data; /* User data */
1056 };
1059 /*
1060 * Keys
1061 */
1063 struct keybinding {
1064 int alias;
1065 enum request request;
1066 };
1068 static struct keybinding default_keybindings[] = {
1069 /* View switching */
1070 { 'm', REQ_VIEW_MAIN },
1071 { 'd', REQ_VIEW_DIFF },
1072 { 'l', REQ_VIEW_LOG },
1073 { 't', REQ_VIEW_TREE },
1074 { 'f', REQ_VIEW_BLOB },
1075 { 'B', REQ_VIEW_BLAME },
1076 { 'p', REQ_VIEW_PAGER },
1077 { 'h', REQ_VIEW_HELP },
1078 { 'S', REQ_VIEW_STATUS },
1079 { 'c', REQ_VIEW_STAGE },
1081 /* View manipulation */
1082 { 'q', REQ_VIEW_CLOSE },
1083 { KEY_TAB, REQ_VIEW_NEXT },
1084 { KEY_RETURN, REQ_ENTER },
1085 { KEY_UP, REQ_PREVIOUS },
1086 { KEY_DOWN, REQ_NEXT },
1087 { 'R', REQ_REFRESH },
1088 { KEY_F(5), REQ_REFRESH },
1089 { 'O', REQ_MAXIMIZE },
1091 /* Cursor navigation */
1092 { 'k', REQ_MOVE_UP },
1093 { 'j', REQ_MOVE_DOWN },
1094 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1095 { KEY_END, REQ_MOVE_LAST_LINE },
1096 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1097 { ' ', REQ_MOVE_PAGE_DOWN },
1098 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1099 { 'b', REQ_MOVE_PAGE_UP },
1100 { '-', REQ_MOVE_PAGE_UP },
1102 /* Scrolling */
1103 { KEY_IC, REQ_SCROLL_LINE_UP },
1104 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1105 { 'w', REQ_SCROLL_PAGE_UP },
1106 { 's', REQ_SCROLL_PAGE_DOWN },
1108 /* Searching */
1109 { '/', REQ_SEARCH },
1110 { '?', REQ_SEARCH_BACK },
1111 { 'n', REQ_FIND_NEXT },
1112 { 'N', REQ_FIND_PREV },
1114 /* Misc */
1115 { 'Q', REQ_QUIT },
1116 { 'z', REQ_STOP_LOADING },
1117 { 'v', REQ_SHOW_VERSION },
1118 { 'r', REQ_SCREEN_REDRAW },
1119 { '.', REQ_TOGGLE_LINENO },
1120 { 'D', REQ_TOGGLE_DATE },
1121 { 'A', REQ_TOGGLE_AUTHOR },
1122 { 'g', REQ_TOGGLE_REV_GRAPH },
1123 { 'F', REQ_TOGGLE_REFS },
1124 { ':', REQ_PROMPT },
1125 { 'u', REQ_STATUS_UPDATE },
1126 { '!', REQ_STATUS_REVERT },
1127 { 'M', REQ_STATUS_MERGE },
1128 { '@', REQ_STAGE_NEXT },
1129 { ',', REQ_PARENT },
1130 { 'e', REQ_EDIT },
1131 };
1133 #define KEYMAP_INFO \
1134 KEYMAP_(GENERIC), \
1135 KEYMAP_(MAIN), \
1136 KEYMAP_(DIFF), \
1137 KEYMAP_(LOG), \
1138 KEYMAP_(TREE), \
1139 KEYMAP_(BLOB), \
1140 KEYMAP_(BLAME), \
1141 KEYMAP_(PAGER), \
1142 KEYMAP_(HELP), \
1143 KEYMAP_(STATUS), \
1144 KEYMAP_(STAGE)
1146 enum keymap {
1147 #define KEYMAP_(name) KEYMAP_##name
1148 KEYMAP_INFO
1149 #undef KEYMAP_
1150 };
1152 static struct int_map keymap_table[] = {
1153 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
1154 KEYMAP_INFO
1155 #undef KEYMAP_
1156 };
1158 #define set_keymap(map, name) \
1159 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
1161 struct keybinding_table {
1162 struct keybinding *data;
1163 size_t size;
1164 };
1166 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1168 static void
1169 add_keybinding(enum keymap keymap, enum request request, int key)
1170 {
1171 struct keybinding_table *table = &keybindings[keymap];
1173 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1174 if (!table->data)
1175 die("Failed to allocate keybinding");
1176 table->data[table->size].alias = key;
1177 table->data[table->size++].request = request;
1178 }
1180 /* Looks for a key binding first in the given map, then in the generic map, and
1181 * lastly in the default keybindings. */
1182 static enum request
1183 get_keybinding(enum keymap keymap, int key)
1184 {
1185 size_t i;
1187 for (i = 0; i < keybindings[keymap].size; i++)
1188 if (keybindings[keymap].data[i].alias == key)
1189 return keybindings[keymap].data[i].request;
1191 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1192 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1193 return keybindings[KEYMAP_GENERIC].data[i].request;
1195 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1196 if (default_keybindings[i].alias == key)
1197 return default_keybindings[i].request;
1199 return (enum request) key;
1200 }
1203 struct key {
1204 const char *name;
1205 int value;
1206 };
1208 static struct key key_table[] = {
1209 { "Enter", KEY_RETURN },
1210 { "Space", ' ' },
1211 { "Backspace", KEY_BACKSPACE },
1212 { "Tab", KEY_TAB },
1213 { "Escape", KEY_ESC },
1214 { "Left", KEY_LEFT },
1215 { "Right", KEY_RIGHT },
1216 { "Up", KEY_UP },
1217 { "Down", KEY_DOWN },
1218 { "Insert", KEY_IC },
1219 { "Delete", KEY_DC },
1220 { "Hash", '#' },
1221 { "Home", KEY_HOME },
1222 { "End", KEY_END },
1223 { "PageUp", KEY_PPAGE },
1224 { "PageDown", KEY_NPAGE },
1225 { "F1", KEY_F(1) },
1226 { "F2", KEY_F(2) },
1227 { "F3", KEY_F(3) },
1228 { "F4", KEY_F(4) },
1229 { "F5", KEY_F(5) },
1230 { "F6", KEY_F(6) },
1231 { "F7", KEY_F(7) },
1232 { "F8", KEY_F(8) },
1233 { "F9", KEY_F(9) },
1234 { "F10", KEY_F(10) },
1235 { "F11", KEY_F(11) },
1236 { "F12", KEY_F(12) },
1237 };
1239 static int
1240 get_key_value(const char *name)
1241 {
1242 int i;
1244 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1245 if (!strcasecmp(key_table[i].name, name))
1246 return key_table[i].value;
1248 if (strlen(name) == 1 && isprint(*name))
1249 return (int) *name;
1251 return ERR;
1252 }
1254 static const char *
1255 get_key_name(int key_value)
1256 {
1257 static char key_char[] = "'X'";
1258 const char *seq = NULL;
1259 int key;
1261 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1262 if (key_table[key].value == key_value)
1263 seq = key_table[key].name;
1265 if (seq == NULL &&
1266 key_value < 127 &&
1267 isprint(key_value)) {
1268 key_char[1] = (char) key_value;
1269 seq = key_char;
1270 }
1272 return seq ? seq : "(no key)";
1273 }
1275 static const char *
1276 get_key(enum request request)
1277 {
1278 static char buf[BUFSIZ];
1279 size_t pos = 0;
1280 char *sep = "";
1281 int i;
1283 buf[pos] = 0;
1285 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1286 struct keybinding *keybinding = &default_keybindings[i];
1288 if (keybinding->request != request)
1289 continue;
1291 if (!string_format_from(buf, &pos, "%s%s", sep,
1292 get_key_name(keybinding->alias)))
1293 return "Too many keybindings!";
1294 sep = ", ";
1295 }
1297 return buf;
1298 }
1300 struct run_request {
1301 enum keymap keymap;
1302 int key;
1303 const char *argv[SIZEOF_ARG];
1304 };
1306 static struct run_request *run_request;
1307 static size_t run_requests;
1309 static enum request
1310 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1311 {
1312 struct run_request *req;
1314 if (argc >= ARRAY_SIZE(req->argv) - 1)
1315 return REQ_NONE;
1317 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
1318 if (!req)
1319 return REQ_NONE;
1321 run_request = req;
1322 req = &run_request[run_requests];
1323 req->keymap = keymap;
1324 req->key = key;
1325 req->argv[0] = NULL;
1327 if (!format_argv(req->argv, argv, FORMAT_NONE))
1328 return REQ_NONE;
1330 return REQ_NONE + ++run_requests;
1331 }
1333 static struct run_request *
1334 get_run_request(enum request request)
1335 {
1336 if (request <= REQ_NONE)
1337 return NULL;
1338 return &run_request[request - REQ_NONE - 1];
1339 }
1341 static void
1342 add_builtin_run_requests(void)
1343 {
1344 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1345 const char *gc[] = { "git", "gc", NULL };
1346 struct {
1347 enum keymap keymap;
1348 int key;
1349 int argc;
1350 const char **argv;
1351 } reqs[] = {
1352 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1353 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1354 };
1355 int i;
1357 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1358 enum request req;
1360 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1361 if (req != REQ_NONE)
1362 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1363 }
1364 }
1366 /*
1367 * User config file handling.
1368 */
1370 static struct int_map color_map[] = {
1371 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1372 COLOR_MAP(DEFAULT),
1373 COLOR_MAP(BLACK),
1374 COLOR_MAP(BLUE),
1375 COLOR_MAP(CYAN),
1376 COLOR_MAP(GREEN),
1377 COLOR_MAP(MAGENTA),
1378 COLOR_MAP(RED),
1379 COLOR_MAP(WHITE),
1380 COLOR_MAP(YELLOW),
1381 };
1383 #define set_color(color, name) \
1384 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1386 static struct int_map attr_map[] = {
1387 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1388 ATTR_MAP(NORMAL),
1389 ATTR_MAP(BLINK),
1390 ATTR_MAP(BOLD),
1391 ATTR_MAP(DIM),
1392 ATTR_MAP(REVERSE),
1393 ATTR_MAP(STANDOUT),
1394 ATTR_MAP(UNDERLINE),
1395 };
1397 #define set_attribute(attr, name) \
1398 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1400 static int config_lineno;
1401 static bool config_errors;
1402 static const char *config_msg;
1404 /* Wants: object fgcolor bgcolor [attr] */
1405 static int
1406 option_color_command(int argc, const char *argv[])
1407 {
1408 struct line_info *info;
1410 if (argc != 3 && argc != 4) {
1411 config_msg = "Wrong number of arguments given to color command";
1412 return ERR;
1413 }
1415 info = get_line_info(argv[0]);
1416 if (!info) {
1417 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1418 info = get_line_info("delimiter");
1420 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1421 info = get_line_info("date");
1423 } else {
1424 config_msg = "Unknown color name";
1425 return ERR;
1426 }
1427 }
1429 if (set_color(&info->fg, argv[1]) == ERR ||
1430 set_color(&info->bg, argv[2]) == ERR) {
1431 config_msg = "Unknown color";
1432 return ERR;
1433 }
1435 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1436 config_msg = "Unknown attribute";
1437 return ERR;
1438 }
1440 return OK;
1441 }
1443 static bool parse_bool(const char *s)
1444 {
1445 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1446 !strcmp(s, "yes")) ? TRUE : FALSE;
1447 }
1449 static int
1450 parse_int(const char *s, int default_value, int min, int max)
1451 {
1452 int value = atoi(s);
1454 return (value < min || value > max) ? default_value : value;
1455 }
1457 /* Wants: name = value */
1458 static int
1459 option_set_command(int argc, const char *argv[])
1460 {
1461 if (argc != 3) {
1462 config_msg = "Wrong number of arguments given to set command";
1463 return ERR;
1464 }
1466 if (strcmp(argv[1], "=")) {
1467 config_msg = "No value assigned";
1468 return ERR;
1469 }
1471 if (!strcmp(argv[0], "show-author")) {
1472 opt_author = parse_bool(argv[2]);
1473 return OK;
1474 }
1476 if (!strcmp(argv[0], "show-date")) {
1477 opt_date = parse_bool(argv[2]);
1478 return OK;
1479 }
1481 if (!strcmp(argv[0], "show-rev-graph")) {
1482 opt_rev_graph = parse_bool(argv[2]);
1483 return OK;
1484 }
1486 if (!strcmp(argv[0], "show-refs")) {
1487 opt_show_refs = parse_bool(argv[2]);
1488 return OK;
1489 }
1491 if (!strcmp(argv[0], "show-line-numbers")) {
1492 opt_line_number = parse_bool(argv[2]);
1493 return OK;
1494 }
1496 if (!strcmp(argv[0], "line-graphics")) {
1497 opt_line_graphics = parse_bool(argv[2]);
1498 return OK;
1499 }
1501 if (!strcmp(argv[0], "line-number-interval")) {
1502 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1503 return OK;
1504 }
1506 if (!strcmp(argv[0], "author-width")) {
1507 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1508 return OK;
1509 }
1511 if (!strcmp(argv[0], "tab-size")) {
1512 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1513 return OK;
1514 }
1516 if (!strcmp(argv[0], "commit-encoding")) {
1517 const char *arg = argv[2];
1518 int arglen = strlen(arg);
1520 switch (arg[0]) {
1521 case '"':
1522 case '\'':
1523 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1524 config_msg = "Unmatched quotation";
1525 return ERR;
1526 }
1527 arg += 1; arglen -= 2;
1528 default:
1529 string_ncopy(opt_encoding, arg, strlen(arg));
1530 return OK;
1531 }
1532 }
1534 config_msg = "Unknown variable name";
1535 return ERR;
1536 }
1538 /* Wants: mode request key */
1539 static int
1540 option_bind_command(int argc, const char *argv[])
1541 {
1542 enum request request;
1543 int keymap;
1544 int key;
1546 if (argc < 3) {
1547 config_msg = "Wrong number of arguments given to bind command";
1548 return ERR;
1549 }
1551 if (set_keymap(&keymap, argv[0]) == ERR) {
1552 config_msg = "Unknown key map";
1553 return ERR;
1554 }
1556 key = get_key_value(argv[1]);
1557 if (key == ERR) {
1558 config_msg = "Unknown key";
1559 return ERR;
1560 }
1562 request = get_request(argv[2]);
1563 if (request == REQ_NONE) {
1564 struct {
1565 const char *name;
1566 enum request request;
1567 } obsolete[] = {
1568 { "cherry-pick", REQ_NONE },
1569 { "screen-resize", REQ_NONE },
1570 { "tree-parent", REQ_PARENT },
1571 };
1572 size_t namelen = strlen(argv[2]);
1573 int i;
1575 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1576 if (namelen != strlen(obsolete[i].name) ||
1577 string_enum_compare(obsolete[i].name, argv[2], namelen))
1578 continue;
1579 if (obsolete[i].request != REQ_NONE)
1580 add_keybinding(keymap, obsolete[i].request, key);
1581 config_msg = "Obsolete request name";
1582 return ERR;
1583 }
1584 }
1585 if (request == REQ_NONE && *argv[2]++ == '!')
1586 request = add_run_request(keymap, key, argc - 2, argv + 2);
1587 if (request == REQ_NONE) {
1588 config_msg = "Unknown request name";
1589 return ERR;
1590 }
1592 add_keybinding(keymap, request, key);
1594 return OK;
1595 }
1597 static int
1598 set_option(const char *opt, char *value)
1599 {
1600 const char *argv[SIZEOF_ARG];
1601 int argc = 0;
1603 if (!argv_from_string(argv, &argc, value)) {
1604 config_msg = "Too many option arguments";
1605 return ERR;
1606 }
1608 if (!strcmp(opt, "color"))
1609 return option_color_command(argc, argv);
1611 if (!strcmp(opt, "set"))
1612 return option_set_command(argc, argv);
1614 if (!strcmp(opt, "bind"))
1615 return option_bind_command(argc, argv);
1617 config_msg = "Unknown option command";
1618 return ERR;
1619 }
1621 static int
1622 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1623 {
1624 int status = OK;
1626 config_lineno++;
1627 config_msg = "Internal error";
1629 /* Check for comment markers, since read_properties() will
1630 * only ensure opt and value are split at first " \t". */
1631 optlen = strcspn(opt, "#");
1632 if (optlen == 0)
1633 return OK;
1635 if (opt[optlen] != 0) {
1636 config_msg = "No option value";
1637 status = ERR;
1639 } else {
1640 /* Look for comment endings in the value. */
1641 size_t len = strcspn(value, "#");
1643 if (len < valuelen) {
1644 valuelen = len;
1645 value[valuelen] = 0;
1646 }
1648 status = set_option(opt, value);
1649 }
1651 if (status == ERR) {
1652 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1653 config_lineno, (int) optlen, opt, config_msg);
1654 config_errors = TRUE;
1655 }
1657 /* Always keep going if errors are encountered. */
1658 return OK;
1659 }
1661 static void
1662 load_option_file(const char *path)
1663 {
1664 struct io io = {};
1666 /* It's ok that the file doesn't exist. */
1667 if (!io_open(&io, path))
1668 return;
1670 config_lineno = 0;
1671 config_errors = FALSE;
1673 if (read_properties(&io, " \t", read_option) == ERR ||
1674 config_errors == TRUE)
1675 fprintf(stderr, "Errors while loading %s.\n", path);
1676 }
1678 static int
1679 load_options(void)
1680 {
1681 const char *home = getenv("HOME");
1682 const char *tigrc_user = getenv("TIGRC_USER");
1683 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1684 char buf[SIZEOF_STR];
1686 add_builtin_run_requests();
1688 if (!tigrc_system) {
1689 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1690 return ERR;
1691 tigrc_system = buf;
1692 }
1693 load_option_file(tigrc_system);
1695 if (!tigrc_user) {
1696 if (!home || !string_format(buf, "%s/.tigrc", home))
1697 return ERR;
1698 tigrc_user = buf;
1699 }
1700 load_option_file(tigrc_user);
1702 return OK;
1703 }
1706 /*
1707 * The viewer
1708 */
1710 struct view;
1711 struct view_ops;
1713 /* The display array of active views and the index of the current view. */
1714 static struct view *display[2];
1715 static unsigned int current_view;
1717 /* Reading from the prompt? */
1718 static bool input_mode = FALSE;
1720 #define foreach_displayed_view(view, i) \
1721 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1723 #define displayed_views() (display[1] != NULL ? 2 : 1)
1725 /* Current head and commit ID */
1726 static char ref_blob[SIZEOF_REF] = "";
1727 static char ref_commit[SIZEOF_REF] = "HEAD";
1728 static char ref_head[SIZEOF_REF] = "HEAD";
1730 struct view {
1731 const char *name; /* View name */
1732 const char *cmd_env; /* Command line set via environment */
1733 const char *id; /* Points to either of ref_{head,commit,blob} */
1735 struct view_ops *ops; /* View operations */
1737 enum keymap keymap; /* What keymap does this view have */
1738 bool git_dir; /* Whether the view requires a git directory. */
1740 char ref[SIZEOF_REF]; /* Hovered commit reference */
1741 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1743 int height, width; /* The width and height of the main window */
1744 WINDOW *win; /* The main window */
1745 WINDOW *title; /* The title window living below the main window */
1747 /* Navigation */
1748 unsigned long offset; /* Offset of the window top */
1749 unsigned long lineno; /* Current line number */
1750 unsigned long p_offset; /* Previous offset of the window top */
1751 unsigned long p_lineno; /* Previous current line number */
1752 bool p_restore; /* Should the previous position be restored. */
1754 /* Searching */
1755 char grep[SIZEOF_STR]; /* Search string */
1756 regex_t *regex; /* Pre-compiled regex */
1758 /* If non-NULL, points to the view that opened this view. If this view
1759 * is closed tig will switch back to the parent view. */
1760 struct view *parent;
1762 /* Buffering */
1763 size_t lines; /* Total number of lines */
1764 struct line *line; /* Line index */
1765 size_t line_alloc; /* Total number of allocated lines */
1766 unsigned int digits; /* Number of digits in the lines member. */
1768 /* Drawing */
1769 struct line *curline; /* Line currently being drawn. */
1770 enum line_type curtype; /* Attribute currently used for drawing. */
1771 unsigned long col; /* Column when drawing. */
1773 /* Loading */
1774 struct io io;
1775 struct io *pipe;
1776 time_t start_time;
1777 time_t update_secs;
1778 };
1780 struct view_ops {
1781 /* What type of content being displayed. Used in the title bar. */
1782 const char *type;
1783 /* Default command arguments. */
1784 const char **argv;
1785 /* Open and reads in all view content. */
1786 bool (*open)(struct view *view);
1787 /* Read one line; updates view->line. */
1788 bool (*read)(struct view *view, char *data);
1789 /* Draw one line; @lineno must be < view->height. */
1790 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1791 /* Depending on view handle a special requests. */
1792 enum request (*request)(struct view *view, enum request request, struct line *line);
1793 /* Search for regex in a line. */
1794 bool (*grep)(struct view *view, struct line *line);
1795 /* Select line */
1796 void (*select)(struct view *view, struct line *line);
1797 };
1799 static struct view_ops blame_ops;
1800 static struct view_ops blob_ops;
1801 static struct view_ops diff_ops;
1802 static struct view_ops help_ops;
1803 static struct view_ops log_ops;
1804 static struct view_ops main_ops;
1805 static struct view_ops pager_ops;
1806 static struct view_ops stage_ops;
1807 static struct view_ops status_ops;
1808 static struct view_ops tree_ops;
1810 #define VIEW_STR(name, env, ref, ops, map, git) \
1811 { name, #env, ref, ops, map, git }
1813 #define VIEW_(id, name, ops, git, ref) \
1814 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1817 static struct view views[] = {
1818 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1819 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1820 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1821 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1822 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1823 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1824 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1825 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1826 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1827 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1828 };
1830 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1831 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1833 #define foreach_view(view, i) \
1834 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1836 #define view_is_displayed(view) \
1837 (view == display[0] || view == display[1])
1840 enum line_graphic {
1841 LINE_GRAPHIC_VLINE
1842 };
1844 static int line_graphics[] = {
1845 /* LINE_GRAPHIC_VLINE: */ '|'
1846 };
1848 static inline void
1849 set_view_attr(struct view *view, enum line_type type)
1850 {
1851 if (!view->curline->selected && view->curtype != type) {
1852 wattrset(view->win, get_line_attr(type));
1853 wchgat(view->win, -1, 0, type, NULL);
1854 view->curtype = type;
1855 }
1856 }
1858 static int
1859 draw_chars(struct view *view, enum line_type type, const char *string,
1860 int max_len, bool use_tilde)
1861 {
1862 int len = 0;
1863 int col = 0;
1864 int trimmed = FALSE;
1866 if (max_len <= 0)
1867 return 0;
1869 if (opt_utf8) {
1870 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1871 } else {
1872 col = len = strlen(string);
1873 if (len > max_len) {
1874 if (use_tilde) {
1875 max_len -= 1;
1876 }
1877 col = len = max_len;
1878 trimmed = TRUE;
1879 }
1880 }
1882 set_view_attr(view, type);
1883 waddnstr(view->win, string, len);
1884 if (trimmed && use_tilde) {
1885 set_view_attr(view, LINE_DELIMITER);
1886 waddch(view->win, '~');
1887 col++;
1888 }
1890 return col;
1891 }
1893 static int
1894 draw_space(struct view *view, enum line_type type, int max, int spaces)
1895 {
1896 static char space[] = " ";
1897 int col = 0;
1899 spaces = MIN(max, spaces);
1901 while (spaces > 0) {
1902 int len = MIN(spaces, sizeof(space) - 1);
1904 col += draw_chars(view, type, space, spaces, FALSE);
1905 spaces -= len;
1906 }
1908 return col;
1909 }
1911 static bool
1912 draw_lineno(struct view *view, unsigned int lineno)
1913 {
1914 char number[10];
1915 int digits3 = view->digits < 3 ? 3 : view->digits;
1916 int max_number = MIN(digits3, STRING_SIZE(number));
1917 int max = view->width - view->col;
1918 int col;
1920 if (max < max_number)
1921 max_number = max;
1923 lineno += view->offset + 1;
1924 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1925 static char fmt[] = "%1ld";
1927 if (view->digits <= 9)
1928 fmt[1] = '0' + digits3;
1930 if (!string_format(number, fmt, lineno))
1931 number[0] = 0;
1932 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1933 } else {
1934 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1935 }
1937 if (col < max) {
1938 set_view_attr(view, LINE_DEFAULT);
1939 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1940 col++;
1941 }
1943 if (col < max)
1944 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1945 view->col += col;
1947 return view->width - view->col <= 0;
1948 }
1950 static bool
1951 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1952 {
1953 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1954 return view->width - view->col <= 0;
1955 }
1957 static bool
1958 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1959 {
1960 int max = view->width - view->col;
1961 int i;
1963 if (max < size)
1964 size = max;
1966 set_view_attr(view, type);
1967 /* Using waddch() instead of waddnstr() ensures that
1968 * they'll be rendered correctly for the cursor line. */
1969 for (i = 0; i < size; i++)
1970 waddch(view->win, graphic[i]);
1972 view->col += size;
1973 if (size < max) {
1974 waddch(view->win, ' ');
1975 view->col++;
1976 }
1978 return view->width - view->col <= 0;
1979 }
1981 static bool
1982 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1983 {
1984 int max = MIN(view->width - view->col, len);
1985 int col;
1987 if (text)
1988 col = draw_chars(view, type, text, max - 1, trim);
1989 else
1990 col = draw_space(view, type, max - 1, max - 1);
1992 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1993 return view->width - view->col <= 0;
1994 }
1996 static bool
1997 draw_date(struct view *view, struct tm *time)
1998 {
1999 char buf[DATE_COLS];
2000 char *date;
2001 int timelen = 0;
2003 if (time)
2004 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
2005 date = timelen ? buf : NULL;
2007 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
2008 }
2010 static bool
2011 draw_view_line(struct view *view, unsigned int lineno)
2012 {
2013 struct line *line;
2014 bool selected = (view->offset + lineno == view->lineno);
2016 assert(view_is_displayed(view));
2018 if (view->offset + lineno >= view->lines)
2019 return FALSE;
2021 line = &view->line[view->offset + lineno];
2023 wmove(view->win, lineno, 0);
2024 if (line->cleareol)
2025 wclrtoeol(view->win);
2026 view->col = 0;
2027 view->curline = line;
2028 view->curtype = LINE_NONE;
2029 line->selected = FALSE;
2030 line->dirty = line->cleareol = 0;
2032 if (selected) {
2033 set_view_attr(view, LINE_CURSOR);
2034 line->selected = TRUE;
2035 view->ops->select(view, line);
2036 }
2038 return view->ops->draw(view, line, lineno);
2039 }
2041 static void
2042 redraw_view_dirty(struct view *view)
2043 {
2044 bool dirty = FALSE;
2045 int lineno;
2047 for (lineno = 0; lineno < view->height; lineno++) {
2048 if (view->offset + lineno >= view->lines)
2049 break;
2050 if (!view->line[view->offset + lineno].dirty)
2051 continue;
2052 dirty = TRUE;
2053 if (!draw_view_line(view, lineno))
2054 break;
2055 }
2057 if (!dirty)
2058 return;
2059 if (input_mode)
2060 wnoutrefresh(view->win);
2061 else
2062 wrefresh(view->win);
2063 }
2065 static void
2066 redraw_view_from(struct view *view, int lineno)
2067 {
2068 assert(0 <= lineno && lineno < view->height);
2070 for (; lineno < view->height; lineno++) {
2071 if (!draw_view_line(view, lineno))
2072 break;
2073 }
2075 if (input_mode)
2076 wnoutrefresh(view->win);
2077 else
2078 wrefresh(view->win);
2079 }
2081 static void
2082 redraw_view(struct view *view)
2083 {
2084 werase(view->win);
2085 redraw_view_from(view, 0);
2086 }
2089 static void
2090 update_display_cursor(struct view *view)
2091 {
2092 /* Move the cursor to the right-most column of the cursor line.
2093 *
2094 * XXX: This could turn out to be a bit expensive, but it ensures that
2095 * the cursor does not jump around. */
2096 if (view->lines) {
2097 wmove(view->win, view->lineno - view->offset, view->width - 1);
2098 wrefresh(view->win);
2099 }
2100 }
2102 static void
2103 update_view_title(struct view *view)
2104 {
2105 char buf[SIZEOF_STR];
2106 char state[SIZEOF_STR];
2107 size_t bufpos = 0, statelen = 0;
2109 assert(view_is_displayed(view));
2111 if (view != VIEW(REQ_VIEW_STATUS) && view->lines) {
2112 unsigned int view_lines = view->offset + view->height;
2113 unsigned int lines = view->lines
2114 ? MIN(view_lines, view->lines) * 100 / view->lines
2115 : 0;
2117 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2118 view->ops->type,
2119 view->lineno + 1,
2120 view->lines,
2121 lines);
2123 }
2125 if (view->pipe) {
2126 time_t secs = time(NULL) - view->start_time;
2128 /* Three git seconds are a long time ... */
2129 if (secs > 2)
2130 string_format_from(state, &statelen, " loading %lds", secs);
2131 }
2133 string_format_from(buf, &bufpos, "[%s]", view->name);
2134 if (*view->ref && bufpos < view->width) {
2135 size_t refsize = strlen(view->ref);
2136 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2138 if (minsize < view->width)
2139 refsize = view->width - minsize + 7;
2140 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2141 }
2143 if (statelen && bufpos < view->width) {
2144 string_format_from(buf, &bufpos, "%s", state);
2145 }
2147 if (view == display[current_view])
2148 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2149 else
2150 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2152 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2153 wclrtoeol(view->title);
2154 wmove(view->title, 0, view->width - 1);
2156 if (input_mode)
2157 wnoutrefresh(view->title);
2158 else
2159 wrefresh(view->title);
2160 }
2162 static void
2163 resize_display(void)
2164 {
2165 int offset, i;
2166 struct view *base = display[0];
2167 struct view *view = display[1] ? display[1] : display[0];
2169 /* Setup window dimensions */
2171 getmaxyx(stdscr, base->height, base->width);
2173 /* Make room for the status window. */
2174 base->height -= 1;
2176 if (view != base) {
2177 /* Horizontal split. */
2178 view->width = base->width;
2179 view->height = SCALE_SPLIT_VIEW(base->height);
2180 base->height -= view->height;
2182 /* Make room for the title bar. */
2183 view->height -= 1;
2184 }
2186 /* Make room for the title bar. */
2187 base->height -= 1;
2189 offset = 0;
2191 foreach_displayed_view (view, i) {
2192 if (!view->win) {
2193 view->win = newwin(view->height, 0, offset, 0);
2194 if (!view->win)
2195 die("Failed to create %s view", view->name);
2197 scrollok(view->win, FALSE);
2199 view->title = newwin(1, 0, offset + view->height, 0);
2200 if (!view->title)
2201 die("Failed to create title window");
2203 } else {
2204 wresize(view->win, view->height, view->width);
2205 mvwin(view->win, offset, 0);
2206 mvwin(view->title, offset + view->height, 0);
2207 }
2209 offset += view->height + 1;
2210 }
2211 }
2213 static void
2214 redraw_display(bool clear)
2215 {
2216 struct view *view;
2217 int i;
2219 foreach_displayed_view (view, i) {
2220 if (clear)
2221 wclear(view->win);
2222 redraw_view(view);
2223 update_view_title(view);
2224 }
2226 if (display[current_view])
2227 update_display_cursor(display[current_view]);
2228 }
2230 static void
2231 toggle_view_option(bool *option, const char *help)
2232 {
2233 *option = !*option;
2234 redraw_display(FALSE);
2235 report("%sabling %s", *option ? "En" : "Dis", help);
2236 }
2238 /*
2239 * Navigation
2240 */
2242 /* Scrolling backend */
2243 static void
2244 do_scroll_view(struct view *view, int lines)
2245 {
2246 bool redraw_current_line = FALSE;
2248 /* The rendering expects the new offset. */
2249 view->offset += lines;
2251 assert(0 <= view->offset && view->offset < view->lines);
2252 assert(lines);
2254 /* Move current line into the view. */
2255 if (view->lineno < view->offset) {
2256 view->lineno = view->offset;
2257 redraw_current_line = TRUE;
2258 } else if (view->lineno >= view->offset + view->height) {
2259 view->lineno = view->offset + view->height - 1;
2260 redraw_current_line = TRUE;
2261 }
2263 assert(view->offset <= view->lineno && view->lineno < view->lines);
2265 /* Redraw the whole screen if scrolling is pointless. */
2266 if (view->height < ABS(lines)) {
2267 redraw_view(view);
2269 } else {
2270 int line = lines > 0 ? view->height - lines : 0;
2271 int end = line + ABS(lines);
2273 scrollok(view->win, TRUE);
2274 wscrl(view->win, lines);
2275 scrollok(view->win, FALSE);
2277 while (line < end && draw_view_line(view, line))
2278 line++;
2280 if (redraw_current_line)
2281 draw_view_line(view, view->lineno - view->offset);
2282 /* FIXME: Stupid hack to workaround bug where the message from
2283 * scrolling up one line when impossible followed by scrolling
2284 * down one line is not removed by the next action. */
2285 if (lines > 0)
2286 report("");
2287 wrefresh(view->win);
2288 }
2290 report("");
2291 }
2293 /* Scroll frontend */
2294 static void
2295 scroll_view(struct view *view, enum request request)
2296 {
2297 int lines = 1;
2299 assert(view_is_displayed(view));
2301 switch (request) {
2302 case REQ_SCROLL_PAGE_DOWN:
2303 lines = view->height;
2304 case REQ_SCROLL_LINE_DOWN:
2305 if (view->offset + lines > view->lines)
2306 lines = view->lines - view->offset;
2308 if (lines == 0 || view->offset + view->height >= view->lines) {
2309 report("Cannot scroll beyond the last line");
2310 return;
2311 }
2312 break;
2314 case REQ_SCROLL_PAGE_UP:
2315 lines = view->height;
2316 case REQ_SCROLL_LINE_UP:
2317 if (lines > view->offset)
2318 lines = view->offset;
2320 if (lines == 0) {
2321 report("Cannot scroll beyond the first line");
2322 return;
2323 }
2325 lines = -lines;
2326 break;
2328 default:
2329 die("request %d not handled in switch", request);
2330 }
2332 do_scroll_view(view, lines);
2333 }
2335 /* Cursor moving */
2336 static void
2337 move_view(struct view *view, enum request request)
2338 {
2339 int scroll_steps = 0;
2340 int steps;
2342 switch (request) {
2343 case REQ_MOVE_FIRST_LINE:
2344 steps = -view->lineno;
2345 break;
2347 case REQ_MOVE_LAST_LINE:
2348 steps = view->lines - view->lineno - 1;
2349 break;
2351 case REQ_MOVE_PAGE_UP:
2352 steps = view->height > view->lineno
2353 ? -view->lineno : -view->height;
2354 break;
2356 case REQ_MOVE_PAGE_DOWN:
2357 steps = view->lineno + view->height >= view->lines
2358 ? view->lines - view->lineno - 1 : view->height;
2359 break;
2361 case REQ_MOVE_UP:
2362 steps = -1;
2363 break;
2365 case REQ_MOVE_DOWN:
2366 steps = 1;
2367 break;
2369 default:
2370 die("request %d not handled in switch", request);
2371 }
2373 if (steps <= 0 && view->lineno == 0) {
2374 report("Cannot move beyond the first line");
2375 return;
2377 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2378 report("Cannot move beyond the last line");
2379 return;
2380 }
2382 /* Move the current line */
2383 view->lineno += steps;
2384 assert(0 <= view->lineno && view->lineno < view->lines);
2386 /* Check whether the view needs to be scrolled */
2387 if (view->lineno < view->offset ||
2388 view->lineno >= view->offset + view->height) {
2389 scroll_steps = steps;
2390 if (steps < 0 && -steps > view->offset) {
2391 scroll_steps = -view->offset;
2393 } else if (steps > 0) {
2394 if (view->lineno == view->lines - 1 &&
2395 view->lines > view->height) {
2396 scroll_steps = view->lines - view->offset - 1;
2397 if (scroll_steps >= view->height)
2398 scroll_steps -= view->height - 1;
2399 }
2400 }
2401 }
2403 if (!view_is_displayed(view)) {
2404 view->offset += scroll_steps;
2405 assert(0 <= view->offset && view->offset < view->lines);
2406 view->ops->select(view, &view->line[view->lineno]);
2407 return;
2408 }
2410 /* Repaint the old "current" line if we be scrolling */
2411 if (ABS(steps) < view->height)
2412 draw_view_line(view, view->lineno - steps - view->offset);
2414 if (scroll_steps) {
2415 do_scroll_view(view, scroll_steps);
2416 return;
2417 }
2419 /* Draw the current line */
2420 draw_view_line(view, view->lineno - view->offset);
2422 wrefresh(view->win);
2423 report("");
2424 }
2427 /*
2428 * Searching
2429 */
2431 static void search_view(struct view *view, enum request request);
2433 static void
2434 select_view_line(struct view *view, unsigned long lineno)
2435 {
2436 if (lineno - view->offset >= view->height) {
2437 view->offset = lineno;
2438 view->lineno = lineno;
2439 if (view_is_displayed(view))
2440 redraw_view(view);
2442 } else {
2443 unsigned long old_lineno = view->lineno - view->offset;
2445 view->lineno = lineno;
2446 if (view_is_displayed(view)) {
2447 draw_view_line(view, old_lineno);
2448 draw_view_line(view, view->lineno - view->offset);
2449 wrefresh(view->win);
2450 } else {
2451 view->ops->select(view, &view->line[view->lineno]);
2452 }
2453 }
2454 }
2456 static void
2457 find_next(struct view *view, enum request request)
2458 {
2459 unsigned long lineno = view->lineno;
2460 int direction;
2462 if (!*view->grep) {
2463 if (!*opt_search)
2464 report("No previous search");
2465 else
2466 search_view(view, request);
2467 return;
2468 }
2470 switch (request) {
2471 case REQ_SEARCH:
2472 case REQ_FIND_NEXT:
2473 direction = 1;
2474 break;
2476 case REQ_SEARCH_BACK:
2477 case REQ_FIND_PREV:
2478 direction = -1;
2479 break;
2481 default:
2482 return;
2483 }
2485 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2486 lineno += direction;
2488 /* Note, lineno is unsigned long so will wrap around in which case it
2489 * will become bigger than view->lines. */
2490 for (; lineno < view->lines; lineno += direction) {
2491 if (view->ops->grep(view, &view->line[lineno])) {
2492 select_view_line(view, lineno);
2493 report("Line %ld matches '%s'", lineno + 1, view->grep);
2494 return;
2495 }
2496 }
2498 report("No match found for '%s'", view->grep);
2499 }
2501 static void
2502 search_view(struct view *view, enum request request)
2503 {
2504 int regex_err;
2506 if (view->regex) {
2507 regfree(view->regex);
2508 *view->grep = 0;
2509 } else {
2510 view->regex = calloc(1, sizeof(*view->regex));
2511 if (!view->regex)
2512 return;
2513 }
2515 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2516 if (regex_err != 0) {
2517 char buf[SIZEOF_STR] = "unknown error";
2519 regerror(regex_err, view->regex, buf, sizeof(buf));
2520 report("Search failed: %s", buf);
2521 return;
2522 }
2524 string_copy(view->grep, opt_search);
2526 find_next(view, request);
2527 }
2529 /*
2530 * Incremental updating
2531 */
2533 static void
2534 reset_view(struct view *view)
2535 {
2536 int i;
2538 for (i = 0; i < view->lines; i++)
2539 free(view->line[i].data);
2540 free(view->line);
2542 view->p_offset = view->offset;
2543 view->p_lineno = view->lineno;
2545 view->line = NULL;
2546 view->offset = 0;
2547 view->lines = 0;
2548 view->lineno = 0;
2549 view->line_alloc = 0;
2550 view->vid[0] = 0;
2551 view->update_secs = 0;
2552 }
2554 static void
2555 free_argv(const char *argv[])
2556 {
2557 int argc;
2559 for (argc = 0; argv[argc]; argc++)
2560 free((void *) argv[argc]);
2561 }
2563 static bool
2564 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2565 {
2566 char buf[SIZEOF_STR];
2567 int argc;
2568 bool noreplace = flags == FORMAT_NONE;
2570 free_argv(dst_argv);
2572 for (argc = 0; src_argv[argc]; argc++) {
2573 const char *arg = src_argv[argc];
2574 size_t bufpos = 0;
2576 while (arg) {
2577 char *next = strstr(arg, "%(");
2578 int len = next - arg;
2579 const char *value;
2581 if (!next || noreplace) {
2582 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2583 noreplace = TRUE;
2584 len = strlen(arg);
2585 value = "";
2587 } else if (!prefixcmp(next, "%(directory)")) {
2588 value = opt_path;
2590 } else if (!prefixcmp(next, "%(file)")) {
2591 value = opt_file;
2593 } else if (!prefixcmp(next, "%(ref)")) {
2594 value = *opt_ref ? opt_ref : "HEAD";
2596 } else if (!prefixcmp(next, "%(head)")) {
2597 value = ref_head;
2599 } else if (!prefixcmp(next, "%(commit)")) {
2600 value = ref_commit;
2602 } else if (!prefixcmp(next, "%(blob)")) {
2603 value = ref_blob;
2605 } else {
2606 report("Unknown replacement: `%s`", next);
2607 return FALSE;
2608 }
2610 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2611 return FALSE;
2613 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2614 }
2616 dst_argv[argc] = strdup(buf);
2617 if (!dst_argv[argc])
2618 break;
2619 }
2621 dst_argv[argc] = NULL;
2623 return src_argv[argc] == NULL;
2624 }
2626 static bool
2627 restore_view_position(struct view *view)
2628 {
2629 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2630 return FALSE;
2632 /* Changing the view position cancels the restoring. */
2633 /* FIXME: Changing back to the first line is not detected. */
2634 if (view->offset != 0 || view->lineno != 0) {
2635 view->p_restore = FALSE;
2636 return FALSE;
2637 }
2639 if (view->p_lineno >= view->lines) {
2640 view->p_lineno = view->lines > 0 ? view->lines - 1 : 0;
2641 if (view->p_offset >= view->p_lineno) {
2642 unsigned long half = view->height / 2;
2644 if (view->p_lineno > half)
2645 view->p_offset = view->p_lineno - half;
2646 else
2647 view->p_offset = 0;
2648 }
2649 }
2651 if (view_is_displayed(view) &&
2652 view->offset != view->p_offset &&
2653 view->lineno != view->p_lineno)
2654 werase(view->win);
2656 view->offset = view->p_offset;
2657 view->lineno = view->p_lineno;
2658 view->p_restore = FALSE;
2660 return TRUE;
2661 }
2663 static void
2664 end_update(struct view *view, bool force)
2665 {
2666 if (!view->pipe)
2667 return;
2668 while (!view->ops->read(view, NULL))
2669 if (!force)
2670 return;
2671 set_nonblocking_input(FALSE);
2672 if (force)
2673 kill_io(view->pipe);
2674 done_io(view->pipe);
2675 view->pipe = NULL;
2676 }
2678 static void
2679 setup_update(struct view *view, const char *vid)
2680 {
2681 set_nonblocking_input(TRUE);
2682 reset_view(view);
2683 string_copy_rev(view->vid, vid);
2684 view->pipe = &view->io;
2685 view->start_time = time(NULL);
2686 }
2688 static bool
2689 prepare_update(struct view *view, const char *argv[], const char *dir,
2690 enum format_flags flags)
2691 {
2692 if (view->pipe)
2693 end_update(view, TRUE);
2694 return init_io_rd(&view->io, argv, dir, flags);
2695 }
2697 static bool
2698 prepare_update_file(struct view *view, const char *name)
2699 {
2700 if (view->pipe)
2701 end_update(view, TRUE);
2702 return io_open(&view->io, name);
2703 }
2705 static bool
2706 begin_update(struct view *view, bool refresh)
2707 {
2708 if (view->pipe)
2709 end_update(view, TRUE);
2711 if (refresh) {
2712 if (!start_io(&view->io))
2713 return FALSE;
2715 } else {
2716 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2717 opt_path[0] = 0;
2719 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2720 return FALSE;
2722 /* Put the current ref_* value to the view title ref
2723 * member. This is needed by the blob view. Most other
2724 * views sets it automatically after loading because the
2725 * first line is a commit line. */
2726 string_copy_rev(view->ref, view->id);
2727 }
2729 setup_update(view, view->id);
2731 return TRUE;
2732 }
2734 #define ITEM_CHUNK_SIZE 256
2735 static void *
2736 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2737 {
2738 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2739 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2741 if (mem == NULL || num_chunks != num_chunks_new) {
2742 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2743 mem = realloc(mem, *size * item_size);
2744 }
2746 return mem;
2747 }
2749 static struct line *
2750 realloc_lines(struct view *view, size_t line_size)
2751 {
2752 size_t alloc = view->line_alloc;
2753 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2754 sizeof(*view->line));
2756 if (!tmp)
2757 return NULL;
2759 view->line = tmp;
2760 view->line_alloc = alloc;
2761 return view->line;
2762 }
2764 static bool
2765 update_view(struct view *view)
2766 {
2767 char out_buffer[BUFSIZ * 2];
2768 char *line;
2769 /* Clear the view and redraw everything since the tree sorting
2770 * might have rearranged things. */
2771 bool redraw = view->lines == 0;
2772 bool can_read = TRUE;
2774 if (!view->pipe)
2775 return TRUE;
2777 if (!io_can_read(view->pipe)) {
2778 if (view->lines == 0) {
2779 time_t secs = time(NULL) - view->start_time;
2781 if (secs > view->update_secs) {
2782 if (view->update_secs == 0)
2783 redraw_view(view);
2784 update_view_title(view);
2785 view->update_secs = secs;
2786 }
2787 }
2788 return TRUE;
2789 }
2791 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2792 if (opt_iconv != ICONV_NONE) {
2793 ICONV_CONST char *inbuf = line;
2794 size_t inlen = strlen(line) + 1;
2796 char *outbuf = out_buffer;
2797 size_t outlen = sizeof(out_buffer);
2799 size_t ret;
2801 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2802 if (ret != (size_t) -1)
2803 line = out_buffer;
2804 }
2806 if (!view->ops->read(view, line)) {
2807 report("Allocation failure");
2808 end_update(view, TRUE);
2809 return FALSE;
2810 }
2811 }
2813 {
2814 unsigned long lines = view->lines;
2815 int digits;
2817 for (digits = 0; lines; digits++)
2818 lines /= 10;
2820 /* Keep the displayed view in sync with line number scaling. */
2821 if (digits != view->digits) {
2822 view->digits = digits;
2823 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2824 redraw = TRUE;
2825 }
2826 }
2828 if (io_error(view->pipe)) {
2829 report("Failed to read: %s", io_strerror(view->pipe));
2830 end_update(view, TRUE);
2832 } else if (io_eof(view->pipe)) {
2833 report("");
2834 end_update(view, FALSE);
2835 }
2837 if (restore_view_position(view))
2838 redraw = TRUE;
2840 if (!view_is_displayed(view))
2841 return TRUE;
2843 if (redraw)
2844 redraw_view_from(view, 0);
2845 else
2846 redraw_view_dirty(view);
2848 /* Update the title _after_ the redraw so that if the redraw picks up a
2849 * commit reference in view->ref it'll be available here. */
2850 update_view_title(view);
2851 update_display_cursor(view);
2852 return TRUE;
2853 }
2855 static struct line *
2856 add_line_data(struct view *view, void *data, enum line_type type)
2857 {
2858 struct line *line;
2860 if (!realloc_lines(view, view->lines + 1))
2861 return NULL;
2863 line = &view->line[view->lines++];
2864 memset(line, 0, sizeof(*line));
2865 line->type = type;
2866 line->data = data;
2867 line->dirty = 1;
2869 return line;
2870 }
2872 static struct line *
2873 add_line_text(struct view *view, const char *text, enum line_type type)
2874 {
2875 char *data = text ? strdup(text) : NULL;
2877 return data ? add_line_data(view, data, type) : NULL;
2878 }
2880 static struct line *
2881 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2882 {
2883 char buf[SIZEOF_STR];
2884 va_list args;
2886 va_start(args, fmt);
2887 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2888 buf[0] = 0;
2889 va_end(args);
2891 return buf[0] ? add_line_text(view, buf, type) : NULL;
2892 }
2894 /*
2895 * View opening
2896 */
2898 enum open_flags {
2899 OPEN_DEFAULT = 0, /* Use default view switching. */
2900 OPEN_SPLIT = 1, /* Split current view. */
2901 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2902 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2903 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2904 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2905 OPEN_PREPARED = 32, /* Open already prepared command. */
2906 };
2908 static void
2909 open_view(struct view *prev, enum request request, enum open_flags flags)
2910 {
2911 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2912 bool split = !!(flags & OPEN_SPLIT);
2913 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2914 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2915 struct view *view = VIEW(request);
2916 int nviews = displayed_views();
2917 struct view *base_view = display[0];
2919 if (view == prev && nviews == 1 && !reload) {
2920 report("Already in %s view", view->name);
2921 return;
2922 }
2924 if (view->git_dir && !opt_git_dir[0]) {
2925 report("The %s view is disabled in pager view", view->name);
2926 return;
2927 }
2929 if (split) {
2930 display[1] = view;
2931 if (!backgrounded)
2932 current_view = 1;
2933 } else if (!nomaximize) {
2934 /* Maximize the current view. */
2935 memset(display, 0, sizeof(display));
2936 current_view = 0;
2937 display[current_view] = view;
2938 }
2940 /* Resize the view when switching between split- and full-screen,
2941 * or when switching between two different full-screen views. */
2942 if (nviews != displayed_views() ||
2943 (nviews == 1 && base_view != display[0]))
2944 resize_display();
2946 if (view->ops->open) {
2947 if (view->pipe)
2948 end_update(view, TRUE);
2949 if (!view->ops->open(view)) {
2950 report("Failed to load %s view", view->name);
2951 return;
2952 }
2953 restore_view_position(view);
2955 } else if ((reload || strcmp(view->vid, view->id)) &&
2956 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
2957 report("Failed to load %s view", view->name);
2958 return;
2959 }
2961 if (split && prev->lineno - prev->offset >= prev->height) {
2962 /* Take the title line into account. */
2963 int lines = prev->lineno - prev->offset - prev->height + 1;
2965 /* Scroll the view that was split if the current line is
2966 * outside the new limited view. */
2967 do_scroll_view(prev, lines);
2968 }
2970 if (prev && view != prev) {
2971 if (split && !backgrounded) {
2972 /* "Blur" the previous view. */
2973 update_view_title(prev);
2974 }
2976 view->parent = prev;
2977 }
2979 if (view->pipe && view->lines == 0) {
2980 /* Clear the old view and let the incremental updating refill
2981 * the screen. */
2982 werase(view->win);
2983 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
2984 report("");
2985 } else if (view_is_displayed(view)) {
2986 redraw_view(view);
2987 report("");
2988 }
2990 /* If the view is backgrounded the above calls to report()
2991 * won't redraw the view title. */
2992 if (backgrounded)
2993 update_view_title(view);
2994 }
2996 static void
2997 open_external_viewer(const char *argv[], const char *dir)
2998 {
2999 def_prog_mode(); /* save current tty modes */
3000 endwin(); /* restore original tty modes */
3001 run_io_fg(argv, dir);
3002 fprintf(stderr, "Press Enter to continue");
3003 getc(opt_tty);
3004 reset_prog_mode();
3005 redraw_display(TRUE);
3006 }
3008 static void
3009 open_mergetool(const char *file)
3010 {
3011 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3013 open_external_viewer(mergetool_argv, opt_cdup);
3014 }
3016 static void
3017 open_editor(bool from_root, const char *file)
3018 {
3019 const char *editor_argv[] = { "vi", file, NULL };
3020 const char *editor;
3022 editor = getenv("GIT_EDITOR");
3023 if (!editor && *opt_editor)
3024 editor = opt_editor;
3025 if (!editor)
3026 editor = getenv("VISUAL");
3027 if (!editor)
3028 editor = getenv("EDITOR");
3029 if (!editor)
3030 editor = "vi";
3032 editor_argv[0] = editor;
3033 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
3034 }
3036 static void
3037 open_run_request(enum request request)
3038 {
3039 struct run_request *req = get_run_request(request);
3040 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3042 if (!req) {
3043 report("Unknown run request");
3044 return;
3045 }
3047 if (format_argv(argv, req->argv, FORMAT_ALL))
3048 open_external_viewer(argv, NULL);
3049 free_argv(argv);
3050 }
3052 /*
3053 * User request switch noodle
3054 */
3056 static int
3057 view_driver(struct view *view, enum request request)
3058 {
3059 int i;
3061 if (request == REQ_NONE) {
3062 doupdate();
3063 return TRUE;
3064 }
3066 if (request > REQ_NONE) {
3067 open_run_request(request);
3068 /* FIXME: When all views can refresh always do this. */
3069 if (view == VIEW(REQ_VIEW_STATUS) ||
3070 view == VIEW(REQ_VIEW_MAIN) ||
3071 view == VIEW(REQ_VIEW_LOG) ||
3072 view == VIEW(REQ_VIEW_STAGE))
3073 request = REQ_REFRESH;
3074 else
3075 return TRUE;
3076 }
3078 if (view && view->lines) {
3079 request = view->ops->request(view, request, &view->line[view->lineno]);
3080 if (request == REQ_NONE)
3081 return TRUE;
3082 }
3084 switch (request) {
3085 case REQ_MOVE_UP:
3086 case REQ_MOVE_DOWN:
3087 case REQ_MOVE_PAGE_UP:
3088 case REQ_MOVE_PAGE_DOWN:
3089 case REQ_MOVE_FIRST_LINE:
3090 case REQ_MOVE_LAST_LINE:
3091 move_view(view, request);
3092 break;
3094 case REQ_SCROLL_LINE_DOWN:
3095 case REQ_SCROLL_LINE_UP:
3096 case REQ_SCROLL_PAGE_DOWN:
3097 case REQ_SCROLL_PAGE_UP:
3098 scroll_view(view, request);
3099 break;
3101 case REQ_VIEW_BLAME:
3102 if (!opt_file[0]) {
3103 report("No file chosen, press %s to open tree view",
3104 get_key(REQ_VIEW_TREE));
3105 break;
3106 }
3107 open_view(view, request, OPEN_DEFAULT);
3108 break;
3110 case REQ_VIEW_BLOB:
3111 if (!ref_blob[0]) {
3112 report("No file chosen, press %s to open tree view",
3113 get_key(REQ_VIEW_TREE));
3114 break;
3115 }
3116 open_view(view, request, OPEN_DEFAULT);
3117 break;
3119 case REQ_VIEW_PAGER:
3120 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3121 report("No pager content, press %s to run command from prompt",
3122 get_key(REQ_PROMPT));
3123 break;
3124 }
3125 open_view(view, request, OPEN_DEFAULT);
3126 break;
3128 case REQ_VIEW_STAGE:
3129 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3130 report("No stage content, press %s to open the status view and choose file",
3131 get_key(REQ_VIEW_STATUS));
3132 break;
3133 }
3134 open_view(view, request, OPEN_DEFAULT);
3135 break;
3137 case REQ_VIEW_STATUS:
3138 if (opt_is_inside_work_tree == FALSE) {
3139 report("The status view requires a working tree");
3140 break;
3141 }
3142 open_view(view, request, OPEN_DEFAULT);
3143 break;
3145 case REQ_VIEW_MAIN:
3146 case REQ_VIEW_DIFF:
3147 case REQ_VIEW_LOG:
3148 case REQ_VIEW_TREE:
3149 case REQ_VIEW_HELP:
3150 open_view(view, request, OPEN_DEFAULT);
3151 break;
3153 case REQ_NEXT:
3154 case REQ_PREVIOUS:
3155 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3157 if ((view == VIEW(REQ_VIEW_DIFF) &&
3158 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3159 (view == VIEW(REQ_VIEW_DIFF) &&
3160 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3161 (view == VIEW(REQ_VIEW_STAGE) &&
3162 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3163 (view == VIEW(REQ_VIEW_BLOB) &&
3164 view->parent == VIEW(REQ_VIEW_TREE))) {
3165 int line;
3167 view = view->parent;
3168 line = view->lineno;
3169 move_view(view, request);
3170 if (view_is_displayed(view))
3171 update_view_title(view);
3172 if (line != view->lineno)
3173 view->ops->request(view, REQ_ENTER,
3174 &view->line[view->lineno]);
3176 } else {
3177 move_view(view, request);
3178 }
3179 break;
3181 case REQ_VIEW_NEXT:
3182 {
3183 int nviews = displayed_views();
3184 int next_view = (current_view + 1) % nviews;
3186 if (next_view == current_view) {
3187 report("Only one view is displayed");
3188 break;
3189 }
3191 current_view = next_view;
3192 /* Blur out the title of the previous view. */
3193 update_view_title(view);
3194 report("");
3195 break;
3196 }
3197 case REQ_REFRESH:
3198 report("Refreshing is not yet supported for the %s view", view->name);
3199 break;
3201 case REQ_MAXIMIZE:
3202 if (displayed_views() == 2)
3203 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
3204 break;
3206 case REQ_TOGGLE_LINENO:
3207 toggle_view_option(&opt_line_number, "line numbers");
3208 break;
3210 case REQ_TOGGLE_DATE:
3211 toggle_view_option(&opt_date, "date display");
3212 break;
3214 case REQ_TOGGLE_AUTHOR:
3215 toggle_view_option(&opt_author, "author display");
3216 break;
3218 case REQ_TOGGLE_REV_GRAPH:
3219 toggle_view_option(&opt_rev_graph, "revision graph display");
3220 break;
3222 case REQ_TOGGLE_REFS:
3223 toggle_view_option(&opt_show_refs, "reference display");
3224 break;
3226 case REQ_SEARCH:
3227 case REQ_SEARCH_BACK:
3228 search_view(view, request);
3229 break;
3231 case REQ_FIND_NEXT:
3232 case REQ_FIND_PREV:
3233 find_next(view, request);
3234 break;
3236 case REQ_STOP_LOADING:
3237 for (i = 0; i < ARRAY_SIZE(views); i++) {
3238 view = &views[i];
3239 if (view->pipe)
3240 report("Stopped loading the %s view", view->name),
3241 end_update(view, TRUE);
3242 }
3243 break;
3245 case REQ_SHOW_VERSION:
3246 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3247 return TRUE;
3249 case REQ_SCREEN_REDRAW:
3250 redraw_display(TRUE);
3251 break;
3253 case REQ_EDIT:
3254 report("Nothing to edit");
3255 break;
3257 case REQ_ENTER:
3258 report("Nothing to enter");
3259 break;
3261 case REQ_VIEW_CLOSE:
3262 /* XXX: Mark closed views by letting view->parent point to the
3263 * view itself. Parents to closed view should never be
3264 * followed. */
3265 if (view->parent &&
3266 view->parent->parent != view->parent) {
3267 memset(display, 0, sizeof(display));
3268 current_view = 0;
3269 display[current_view] = view->parent;
3270 view->parent = view;
3271 resize_display();
3272 redraw_display(FALSE);
3273 report("");
3274 break;
3275 }
3276 /* Fall-through */
3277 case REQ_QUIT:
3278 return FALSE;
3280 default:
3281 report("Unknown key, press 'h' for help");
3282 return TRUE;
3283 }
3285 return TRUE;
3286 }
3289 /*
3290 * View backend utilities
3291 */
3293 /* Parse author lines where the name may be empty:
3294 * author <email@address.tld> 1138474660 +0100
3295 */
3296 static void
3297 parse_author_line(char *ident, char *author, size_t authorsize, struct tm *tm)
3298 {
3299 char *nameend = strchr(ident, '<');
3300 char *emailend = strchr(ident, '>');
3302 if (nameend && emailend)
3303 *nameend = *emailend = 0;
3304 ident = chomp_string(ident);
3305 if (!*ident) {
3306 if (nameend)
3307 ident = chomp_string(nameend + 1);
3308 if (!*ident)
3309 ident = "Unknown";
3310 }
3312 string_ncopy_do(author, authorsize, ident, strlen(ident));
3314 /* Parse epoch and timezone */
3315 if (emailend && emailend[1] == ' ') {
3316 char *secs = emailend + 2;
3317 char *zone = strchr(secs, ' ');
3318 time_t time = (time_t) atol(secs);
3320 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
3321 long tz;
3323 zone++;
3324 tz = ('0' - zone[1]) * 60 * 60 * 10;
3325 tz += ('0' - zone[2]) * 60 * 60;
3326 tz += ('0' - zone[3]) * 60;
3327 tz += ('0' - zone[4]) * 60;
3329 if (zone[0] == '-')
3330 tz = -tz;
3332 time -= tz;
3333 }
3335 gmtime_r(&time, tm);
3336 }
3337 }
3339 static enum input_status
3340 select_commit_parent_handler(void *data, char *buf, int c)
3341 {
3342 size_t parents = *(size_t *) data;
3343 int parent = 0;
3345 if (!isdigit(c))
3346 return INPUT_SKIP;
3348 if (*buf)
3349 parent = atoi(buf) * 10;
3350 parent += c - '0';
3352 if (parent > parents)
3353 return INPUT_SKIP;
3354 return INPUT_OK;
3355 }
3357 static bool
3358 select_commit_parent(const char *id, char rev[SIZEOF_REV])
3359 {
3360 char buf[SIZEOF_STR * 4];
3361 const char *revlist_argv[] = {
3362 "git", "rev-list", "-1", "--parents", id, NULL
3363 };
3364 int parents;
3366 if (!run_io_buf(revlist_argv, buf, sizeof(buf)) ||
3367 !*chomp_string(buf) ||
3368 (parents = (strlen(buf) / 40) - 1) < 0) {
3369 report("Failed to get parent information");
3370 return FALSE;
3372 } else if (parents == 0) {
3373 report("The selected commit has no parents");
3374 return FALSE;
3375 }
3377 if (parents > 1) {
3378 char prompt[SIZEOF_STR];
3379 char *result;
3381 if (!string_format(prompt, "Which parent? [1..%d] ", parents))
3382 return FALSE;
3383 result = prompt_input(prompt, select_commit_parent_handler, &parents);
3384 if (!result)
3385 return FALSE;
3386 parents = atoi(result);
3387 }
3389 string_copy_rev(rev, &buf[41 * parents]);
3390 return TRUE;
3391 }
3393 /*
3394 * Pager backend
3395 */
3397 static bool
3398 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3399 {
3400 char *text = line->data;
3402 if (opt_line_number && draw_lineno(view, lineno))
3403 return TRUE;
3405 draw_text(view, line->type, text, TRUE);
3406 return TRUE;
3407 }
3409 static bool
3410 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3411 {
3412 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3413 char refbuf[SIZEOF_STR];
3414 char *ref = NULL;
3416 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3417 ref = chomp_string(refbuf);
3419 if (!ref || !*ref)
3420 return TRUE;
3422 /* This is the only fatal call, since it can "corrupt" the buffer. */
3423 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3424 return FALSE;
3426 return TRUE;
3427 }
3429 static void
3430 add_pager_refs(struct view *view, struct line *line)
3431 {
3432 char buf[SIZEOF_STR];
3433 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3434 struct ref **refs;
3435 size_t bufpos = 0, refpos = 0;
3436 const char *sep = "Refs: ";
3437 bool is_tag = FALSE;
3439 assert(line->type == LINE_COMMIT);
3441 refs = get_refs(commit_id);
3442 if (!refs) {
3443 if (view == VIEW(REQ_VIEW_DIFF))
3444 goto try_add_describe_ref;
3445 return;
3446 }
3448 do {
3449 struct ref *ref = refs[refpos];
3450 const char *fmt = ref->tag ? "%s[%s]" :
3451 ref->remote ? "%s<%s>" : "%s%s";
3453 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3454 return;
3455 sep = ", ";
3456 if (ref->tag)
3457 is_tag = TRUE;
3458 } while (refs[refpos++]->next);
3460 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3461 try_add_describe_ref:
3462 /* Add <tag>-g<commit_id> "fake" reference. */
3463 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3464 return;
3465 }
3467 if (bufpos == 0)
3468 return;
3470 add_line_text(view, buf, LINE_PP_REFS);
3471 }
3473 static bool
3474 pager_read(struct view *view, char *data)
3475 {
3476 struct line *line;
3478 if (!data)
3479 return TRUE;
3481 line = add_line_text(view, data, get_line_type(data));
3482 if (!line)
3483 return FALSE;
3485 if (line->type == LINE_COMMIT &&
3486 (view == VIEW(REQ_VIEW_DIFF) ||
3487 view == VIEW(REQ_VIEW_LOG)))
3488 add_pager_refs(view, line);
3490 return TRUE;
3491 }
3493 static enum request
3494 pager_request(struct view *view, enum request request, struct line *line)
3495 {
3496 int split = 0;
3498 if (request != REQ_ENTER)
3499 return request;
3501 if (line->type == LINE_COMMIT &&
3502 (view == VIEW(REQ_VIEW_LOG) ||
3503 view == VIEW(REQ_VIEW_PAGER))) {
3504 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3505 split = 1;
3506 }
3508 /* Always scroll the view even if it was split. That way
3509 * you can use Enter to scroll through the log view and
3510 * split open each commit diff. */
3511 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3513 /* FIXME: A minor workaround. Scrolling the view will call report("")
3514 * but if we are scrolling a non-current view this won't properly
3515 * update the view title. */
3516 if (split)
3517 update_view_title(view);
3519 return REQ_NONE;
3520 }
3522 static bool
3523 pager_grep(struct view *view, struct line *line)
3524 {
3525 regmatch_t pmatch;
3526 char *text = line->data;
3528 if (!*text)
3529 return FALSE;
3531 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3532 return FALSE;
3534 return TRUE;
3535 }
3537 static void
3538 pager_select(struct view *view, struct line *line)
3539 {
3540 if (line->type == LINE_COMMIT) {
3541 char *text = (char *)line->data + STRING_SIZE("commit ");
3543 if (view != VIEW(REQ_VIEW_PAGER))
3544 string_copy_rev(view->ref, text);
3545 string_copy_rev(ref_commit, text);
3546 }
3547 }
3549 static struct view_ops pager_ops = {
3550 "line",
3551 NULL,
3552 NULL,
3553 pager_read,
3554 pager_draw,
3555 pager_request,
3556 pager_grep,
3557 pager_select,
3558 };
3560 static const char *log_argv[SIZEOF_ARG] = {
3561 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3562 };
3564 static enum request
3565 log_request(struct view *view, enum request request, struct line *line)
3566 {
3567 switch (request) {
3568 case REQ_REFRESH:
3569 load_refs();
3570 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3571 return REQ_NONE;
3572 default:
3573 return pager_request(view, request, line);
3574 }
3575 }
3577 static struct view_ops log_ops = {
3578 "line",
3579 log_argv,
3580 NULL,
3581 pager_read,
3582 pager_draw,
3583 log_request,
3584 pager_grep,
3585 pager_select,
3586 };
3588 static const char *diff_argv[SIZEOF_ARG] = {
3589 "git", "show", "--pretty=fuller", "--no-color", "--root",
3590 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3591 };
3593 static struct view_ops diff_ops = {
3594 "line",
3595 diff_argv,
3596 NULL,
3597 pager_read,
3598 pager_draw,
3599 pager_request,
3600 pager_grep,
3601 pager_select,
3602 };
3604 /*
3605 * Help backend
3606 */
3608 static bool
3609 help_open(struct view *view)
3610 {
3611 char buf[SIZEOF_STR];
3612 size_t bufpos;
3613 int i;
3615 if (view->lines > 0)
3616 return TRUE;
3618 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3620 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3621 const char *key;
3623 if (req_info[i].request == REQ_NONE)
3624 continue;
3626 if (!req_info[i].request) {
3627 add_line_text(view, "", LINE_DEFAULT);
3628 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3629 continue;
3630 }
3632 key = get_key(req_info[i].request);
3633 if (!*key)
3634 key = "(no key defined)";
3636 for (bufpos = 0; bufpos <= req_info[i].namelen; bufpos++) {
3637 buf[bufpos] = tolower(req_info[i].name[bufpos]);
3638 if (buf[bufpos] == '_')
3639 buf[bufpos] = '-';
3640 }
3642 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s",
3643 key, buf, req_info[i].help);
3644 }
3646 if (run_requests) {
3647 add_line_text(view, "", LINE_DEFAULT);
3648 add_line_text(view, "External commands:", LINE_DEFAULT);
3649 }
3651 for (i = 0; i < run_requests; i++) {
3652 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3653 const char *key;
3654 int argc;
3656 if (!req)
3657 continue;
3659 key = get_key_name(req->key);
3660 if (!*key)
3661 key = "(no key defined)";
3663 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3664 if (!string_format_from(buf, &bufpos, "%s%s",
3665 argc ? " " : "", req->argv[argc]))
3666 return REQ_NONE;
3668 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3669 keymap_table[req->keymap].name, key, buf);
3670 }
3672 return TRUE;
3673 }
3675 static struct view_ops help_ops = {
3676 "line",
3677 NULL,
3678 help_open,
3679 NULL,
3680 pager_draw,
3681 pager_request,
3682 pager_grep,
3683 pager_select,
3684 };
3687 /*
3688 * Tree backend
3689 */
3691 struct tree_stack_entry {
3692 struct tree_stack_entry *prev; /* Entry below this in the stack */
3693 unsigned long lineno; /* Line number to restore */
3694 char *name; /* Position of name in opt_path */
3695 };
3697 /* The top of the path stack. */
3698 static struct tree_stack_entry *tree_stack = NULL;
3699 unsigned long tree_lineno = 0;
3701 static void
3702 pop_tree_stack_entry(void)
3703 {
3704 struct tree_stack_entry *entry = tree_stack;
3706 tree_lineno = entry->lineno;
3707 entry->name[0] = 0;
3708 tree_stack = entry->prev;
3709 free(entry);
3710 }
3712 static void
3713 push_tree_stack_entry(const char *name, unsigned long lineno)
3714 {
3715 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3716 size_t pathlen = strlen(opt_path);
3718 if (!entry)
3719 return;
3721 entry->prev = tree_stack;
3722 entry->name = opt_path + pathlen;
3723 tree_stack = entry;
3725 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3726 pop_tree_stack_entry();
3727 return;
3728 }
3730 /* Move the current line to the first tree entry. */
3731 tree_lineno = 1;
3732 entry->lineno = lineno;
3733 }
3735 /* Parse output from git-ls-tree(1):
3736 *
3737 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3738 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3739 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3740 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3741 */
3743 #define SIZEOF_TREE_ATTR \
3744 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3746 #define SIZEOF_TREE_MODE \
3747 STRING_SIZE("100644 ")
3749 #define TREE_ID_OFFSET \
3750 STRING_SIZE("100644 blob ")
3752 struct tree_entry {
3753 char id[SIZEOF_REV];
3754 mode_t mode;
3755 struct tm time; /* Date from the author ident. */
3756 char author[75]; /* Author of the commit. */
3757 char name[1];
3758 };
3760 static const char *
3761 tree_path(struct line *line)
3762 {
3763 return ((struct tree_entry *) line->data)->name;
3764 }
3767 static int
3768 tree_compare_entry(struct line *line1, struct line *line2)
3769 {
3770 if (line1->type != line2->type)
3771 return line1->type == LINE_TREE_DIR ? -1 : 1;
3772 return strcmp(tree_path(line1), tree_path(line2));
3773 }
3775 static struct line *
3776 tree_entry(struct view *view, enum line_type type, const char *path,
3777 const char *mode, const char *id)
3778 {
3779 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3780 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3782 if (!entry || !line) {
3783 free(entry);
3784 return NULL;
3785 }
3787 strncpy(entry->name, path, strlen(path));
3788 if (mode)
3789 entry->mode = strtoul(mode, NULL, 8);
3790 if (id)
3791 string_copy_rev(entry->id, id);
3793 return line;
3794 }
3796 static bool
3797 tree_read_date(struct view *view, char *text, bool *read_date)
3798 {
3799 static char author_name[SIZEOF_STR];
3800 static struct tm author_time;
3802 if (!text && *read_date) {
3803 *read_date = FALSE;
3804 return TRUE;
3806 } else if (!text) {
3807 char *path = *opt_path ? opt_path : ".";
3808 /* Find next entry to process */
3809 const char *log_file[] = {
3810 "git", "log", "--no-color", "--pretty=raw",
3811 "--cc", "--raw", view->id, "--", path, NULL
3812 };
3813 struct io io = {};
3815 if (!run_io_rd(&io, log_file, FORMAT_NONE)) {
3816 report("Failed to load tree data");
3817 return TRUE;
3818 }
3820 done_io(view->pipe);
3821 view->io = io;
3822 *read_date = TRUE;
3823 return FALSE;
3825 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3826 parse_author_line(text + STRING_SIZE("author "),
3827 author_name, sizeof(author_name), &author_time);
3829 } else if (*text == ':') {
3830 char *pos;
3831 size_t annotated = 1;
3832 size_t i;
3834 pos = strchr(text, '\t');
3835 if (!pos)
3836 return TRUE;
3837 text = pos + 1;
3838 if (*opt_prefix && !strncmp(text, opt_prefix, strlen(opt_prefix)))
3839 text += strlen(opt_prefix);
3840 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3841 text += strlen(opt_path);
3842 pos = strchr(text, '/');
3843 if (pos)
3844 *pos = 0;
3846 for (i = 1; i < view->lines; i++) {
3847 struct line *line = &view->line[i];
3848 struct tree_entry *entry = line->data;
3850 annotated += !!*entry->author;
3851 if (*entry->author || strcmp(entry->name, text))
3852 continue;
3854 string_copy(entry->author, author_name);
3855 memcpy(&entry->time, &author_time, sizeof(entry->time));
3856 line->dirty = 1;
3857 break;
3858 }
3860 if (annotated == view->lines)
3861 kill_io(view->pipe);
3862 }
3863 return TRUE;
3864 }
3866 static bool
3867 tree_read(struct view *view, char *text)
3868 {
3869 static bool read_date = FALSE;
3870 struct tree_entry *data;
3871 struct line *entry, *line;
3872 enum line_type type;
3873 size_t textlen = text ? strlen(text) : 0;
3874 char *path = text + SIZEOF_TREE_ATTR;
3876 if (read_date || !text)
3877 return tree_read_date(view, text, &read_date);
3879 if (textlen <= SIZEOF_TREE_ATTR)
3880 return FALSE;
3881 if (view->lines == 0 &&
3882 !tree_entry(view, LINE_TREE_PARENT, opt_path, NULL, NULL))
3883 return FALSE;
3885 /* Strip the path part ... */
3886 if (*opt_path) {
3887 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3888 size_t striplen = strlen(opt_path);
3890 if (pathlen > striplen)
3891 memmove(path, path + striplen,
3892 pathlen - striplen + 1);
3894 /* Insert "link" to parent directory. */
3895 if (view->lines == 1 &&
3896 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3897 return FALSE;
3898 }
3900 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3901 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3902 if (!entry)
3903 return FALSE;
3904 data = entry->data;
3906 /* Skip "Directory ..." and ".." line. */
3907 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3908 if (tree_compare_entry(line, entry) <= 0)
3909 continue;
3911 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3913 line->data = data;
3914 line->type = type;
3915 for (; line <= entry; line++)
3916 line->dirty = line->cleareol = 1;
3917 return TRUE;
3918 }
3920 if (tree_lineno > view->lineno) {
3921 view->lineno = tree_lineno;
3922 tree_lineno = 0;
3923 }
3925 return TRUE;
3926 }
3928 static bool
3929 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3930 {
3931 struct tree_entry *entry = line->data;
3933 if (line->type == LINE_TREE_PARENT) {
3934 if (draw_text(view, line->type, "Directory path /", TRUE))
3935 return TRUE;
3936 } else {
3937 char mode[11] = "-r--r--r--";
3939 if (S_ISDIR(entry->mode)) {
3940 mode[3] = mode[6] = mode[9] = 'x';
3941 mode[0] = 'd';
3942 }
3943 if (S_ISLNK(entry->mode))
3944 mode[0] = 'l';
3945 if (entry->mode & S_IWUSR)
3946 mode[2] = 'w';
3947 if (entry->mode & S_IXUSR)
3948 mode[3] = 'x';
3949 if (entry->mode & S_IXGRP)
3950 mode[6] = 'x';
3951 if (entry->mode & S_IXOTH)
3952 mode[9] = 'x';
3953 if (draw_field(view, LINE_TREE_MODE, mode, 11, TRUE))
3954 return TRUE;
3956 if (opt_author &&
3957 draw_field(view, LINE_MAIN_AUTHOR, entry->author, opt_author_cols, TRUE))
3958 return TRUE;
3960 if (opt_date && draw_date(view, *entry->author ? &entry->time : NULL))
3961 return TRUE;
3962 }
3963 if (draw_text(view, line->type, entry->name, TRUE))
3964 return TRUE;
3965 return TRUE;
3966 }
3968 static void
3969 open_blob_editor()
3970 {
3971 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
3972 int fd = mkstemp(file);
3974 if (fd == -1)
3975 report("Failed to create temporary file");
3976 else if (!run_io_append(blob_ops.argv, FORMAT_ALL, fd))
3977 report("Failed to save blob data to file");
3978 else
3979 open_editor(FALSE, file);
3980 if (fd != -1)
3981 unlink(file);
3982 }
3984 static enum request
3985 tree_request(struct view *view, enum request request, struct line *line)
3986 {
3987 enum open_flags flags;
3989 switch (request) {
3990 case REQ_VIEW_BLAME:
3991 if (line->type != LINE_TREE_FILE) {
3992 report("Blame only supported for files");
3993 return REQ_NONE;
3994 }
3996 string_copy(opt_ref, view->vid);
3997 return request;
3999 case REQ_EDIT:
4000 if (line->type != LINE_TREE_FILE) {
4001 report("Edit only supported for files");
4002 } else if (!is_head_commit(view->vid)) {
4003 open_blob_editor();
4004 } else {
4005 open_editor(TRUE, opt_file);
4006 }
4007 return REQ_NONE;
4009 case REQ_PARENT:
4010 if (!*opt_path) {
4011 /* quit view if at top of tree */
4012 return REQ_VIEW_CLOSE;
4013 }
4014 /* fake 'cd ..' */
4015 line = &view->line[1];
4016 break;
4018 case REQ_ENTER:
4019 break;
4021 default:
4022 return request;
4023 }
4025 /* Cleanup the stack if the tree view is at a different tree. */
4026 while (!*opt_path && tree_stack)
4027 pop_tree_stack_entry();
4029 switch (line->type) {
4030 case LINE_TREE_DIR:
4031 /* Depending on whether it is a subdir or parent (updir?) link
4032 * mangle the path buffer. */
4033 if (line == &view->line[1] && *opt_path) {
4034 pop_tree_stack_entry();
4036 } else {
4037 const char *basename = tree_path(line);
4039 push_tree_stack_entry(basename, view->lineno);
4040 }
4042 /* Trees and subtrees share the same ID, so they are not not
4043 * unique like blobs. */
4044 flags = OPEN_RELOAD;
4045 request = REQ_VIEW_TREE;
4046 break;
4048 case LINE_TREE_FILE:
4049 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4050 request = REQ_VIEW_BLOB;
4051 break;
4053 default:
4054 return REQ_NONE;
4055 }
4057 open_view(view, request, flags);
4058 if (request == REQ_VIEW_TREE)
4059 view->lineno = tree_lineno;
4061 return REQ_NONE;
4062 }
4064 static void
4065 tree_select(struct view *view, struct line *line)
4066 {
4067 struct tree_entry *entry = line->data;
4069 if (line->type == LINE_TREE_FILE) {
4070 string_copy_rev(ref_blob, entry->id);
4071 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4073 } else if (line->type != LINE_TREE_DIR) {
4074 return;
4075 }
4077 string_copy_rev(view->ref, entry->id);
4078 }
4080 static const char *tree_argv[SIZEOF_ARG] = {
4081 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4082 };
4084 static struct view_ops tree_ops = {
4085 "file",
4086 tree_argv,
4087 NULL,
4088 tree_read,
4089 tree_draw,
4090 tree_request,
4091 pager_grep,
4092 tree_select,
4093 };
4095 static bool
4096 blob_read(struct view *view, char *line)
4097 {
4098 if (!line)
4099 return TRUE;
4100 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4101 }
4103 static enum request
4104 blob_request(struct view *view, enum request request, struct line *line)
4105 {
4106 switch (request) {
4107 case REQ_EDIT:
4108 open_blob_editor();
4109 return REQ_NONE;
4110 default:
4111 return pager_request(view, request, line);
4112 }
4113 }
4115 static const char *blob_argv[SIZEOF_ARG] = {
4116 "git", "cat-file", "blob", "%(blob)", NULL
4117 };
4119 static struct view_ops blob_ops = {
4120 "line",
4121 blob_argv,
4122 NULL,
4123 blob_read,
4124 pager_draw,
4125 blob_request,
4126 pager_grep,
4127 pager_select,
4128 };
4130 /*
4131 * Blame backend
4132 *
4133 * Loading the blame view is a two phase job:
4134 *
4135 * 1. File content is read either using opt_file from the
4136 * filesystem or using git-cat-file.
4137 * 2. Then blame information is incrementally added by
4138 * reading output from git-blame.
4139 */
4141 static const char *blame_head_argv[] = {
4142 "git", "blame", "--incremental", "--", "%(file)", NULL
4143 };
4145 static const char *blame_ref_argv[] = {
4146 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4147 };
4149 static const char *blame_cat_file_argv[] = {
4150 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4151 };
4153 struct blame_commit {
4154 char id[SIZEOF_REV]; /* SHA1 ID. */
4155 char title[128]; /* First line of the commit message. */
4156 char author[75]; /* Author of the commit. */
4157 struct tm time; /* Date from the author ident. */
4158 char filename[128]; /* Name of file. */
4159 bool has_previous; /* Was a "previous" line detected. */
4160 };
4162 struct blame {
4163 struct blame_commit *commit;
4164 char text[1];
4165 };
4167 static bool
4168 blame_open(struct view *view)
4169 {
4170 if (*opt_ref || !io_open(&view->io, opt_file)) {
4171 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
4172 return FALSE;
4173 }
4175 setup_update(view, opt_file);
4176 string_format(view->ref, "%s ...", opt_file);
4178 return TRUE;
4179 }
4181 static struct blame_commit *
4182 get_blame_commit(struct view *view, const char *id)
4183 {
4184 size_t i;
4186 for (i = 0; i < view->lines; i++) {
4187 struct blame *blame = view->line[i].data;
4189 if (!blame->commit)
4190 continue;
4192 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4193 return blame->commit;
4194 }
4196 {
4197 struct blame_commit *commit = calloc(1, sizeof(*commit));
4199 if (commit)
4200 string_ncopy(commit->id, id, SIZEOF_REV);
4201 return commit;
4202 }
4203 }
4205 static bool
4206 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4207 {
4208 const char *pos = *posref;
4210 *posref = NULL;
4211 pos = strchr(pos + 1, ' ');
4212 if (!pos || !isdigit(pos[1]))
4213 return FALSE;
4214 *number = atoi(pos + 1);
4215 if (*number < min || *number > max)
4216 return FALSE;
4218 *posref = pos;
4219 return TRUE;
4220 }
4222 static struct blame_commit *
4223 parse_blame_commit(struct view *view, const char *text, int *blamed)
4224 {
4225 struct blame_commit *commit;
4226 struct blame *blame;
4227 const char *pos = text + SIZEOF_REV - 1;
4228 size_t lineno;
4229 size_t group;
4231 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
4232 return NULL;
4234 if (!parse_number(&pos, &lineno, 1, view->lines) ||
4235 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4236 return NULL;
4238 commit = get_blame_commit(view, text);
4239 if (!commit)
4240 return NULL;
4242 *blamed += group;
4243 while (group--) {
4244 struct line *line = &view->line[lineno + group - 1];
4246 blame = line->data;
4247 blame->commit = commit;
4248 line->dirty = 1;
4249 }
4251 return commit;
4252 }
4254 static bool
4255 blame_read_file(struct view *view, const char *line, bool *read_file)
4256 {
4257 if (!line) {
4258 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
4259 struct io io = {};
4261 if (view->lines == 0 && !view->parent)
4262 die("No blame exist for %s", view->vid);
4264 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
4265 report("Failed to load blame data");
4266 return TRUE;
4267 }
4269 done_io(view->pipe);
4270 view->io = io;
4271 *read_file = FALSE;
4272 return FALSE;
4274 } else {
4275 size_t linelen = strlen(line);
4276 struct blame *blame = malloc(sizeof(*blame) + linelen);
4278 blame->commit = NULL;
4279 strncpy(blame->text, line, linelen);
4280 blame->text[linelen] = 0;
4281 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4282 }
4283 }
4285 static bool
4286 match_blame_header(const char *name, char **line)
4287 {
4288 size_t namelen = strlen(name);
4289 bool matched = !strncmp(name, *line, namelen);
4291 if (matched)
4292 *line += namelen;
4294 return matched;
4295 }
4297 static bool
4298 blame_read(struct view *view, char *line)
4299 {
4300 static struct blame_commit *commit = NULL;
4301 static int blamed = 0;
4302 static time_t author_time;
4303 static bool read_file = TRUE;
4305 if (read_file)
4306 return blame_read_file(view, line, &read_file);
4308 if (!line) {
4309 /* Reset all! */
4310 commit = NULL;
4311 blamed = 0;
4312 read_file = TRUE;
4313 string_format(view->ref, "%s", view->vid);
4314 if (view_is_displayed(view)) {
4315 update_view_title(view);
4316 redraw_view_from(view, 0);
4317 }
4318 return TRUE;
4319 }
4321 if (!commit) {
4322 commit = parse_blame_commit(view, line, &blamed);
4323 string_format(view->ref, "%s %2d%%", view->vid,
4324 view->lines ? blamed * 100 / view->lines : 0);
4326 } else if (match_blame_header("author ", &line)) {
4327 string_ncopy(commit->author, line, strlen(line));
4329 } else if (match_blame_header("author-time ", &line)) {
4330 author_time = (time_t) atol(line);
4332 } else if (match_blame_header("author-tz ", &line)) {
4333 long tz;
4335 tz = ('0' - line[1]) * 60 * 60 * 10;
4336 tz += ('0' - line[2]) * 60 * 60;
4337 tz += ('0' - line[3]) * 60;
4338 tz += ('0' - line[4]) * 60;
4340 if (line[0] == '-')
4341 tz = -tz;
4343 author_time -= tz;
4344 gmtime_r(&author_time, &commit->time);
4346 } else if (match_blame_header("summary ", &line)) {
4347 string_ncopy(commit->title, line, strlen(line));
4349 } else if (match_blame_header("previous ", &line)) {
4350 commit->has_previous = TRUE;
4352 } else if (match_blame_header("filename ", &line)) {
4353 string_ncopy(commit->filename, line, strlen(line));
4354 commit = NULL;
4355 }
4357 return TRUE;
4358 }
4360 static bool
4361 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4362 {
4363 struct blame *blame = line->data;
4364 struct tm *time = NULL;
4365 const char *id = NULL, *author = NULL;
4367 if (blame->commit && *blame->commit->filename) {
4368 id = blame->commit->id;
4369 author = blame->commit->author;
4370 time = &blame->commit->time;
4371 }
4373 if (opt_date && draw_date(view, time))
4374 return TRUE;
4376 if (opt_author &&
4377 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
4378 return TRUE;
4380 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4381 return TRUE;
4383 if (draw_lineno(view, lineno))
4384 return TRUE;
4386 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
4387 return TRUE;
4388 }
4390 static bool
4391 check_blame_commit(struct blame *blame)
4392 {
4393 if (!blame->commit)
4394 report("Commit data not loaded yet");
4395 else if (!strcmp(blame->commit->id, NULL_ID))
4396 report("No commit exist for the selected line");
4397 else
4398 return TRUE;
4399 return FALSE;
4400 }
4402 static enum request
4403 blame_request(struct view *view, enum request request, struct line *line)
4404 {
4405 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4406 struct blame *blame = line->data;
4408 switch (request) {
4409 case REQ_VIEW_BLAME:
4410 if (check_blame_commit(blame)) {
4411 string_copy(opt_ref, blame->commit->id);
4412 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4413 }
4414 break;
4416 case REQ_PARENT:
4417 if (check_blame_commit(blame) &&
4418 select_commit_parent(blame->commit->id, opt_ref))
4419 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4420 break;
4422 case REQ_ENTER:
4423 if (!blame->commit) {
4424 report("No commit loaded yet");
4425 break;
4426 }
4428 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4429 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4430 break;
4432 if (!strcmp(blame->commit->id, NULL_ID)) {
4433 struct view *diff = VIEW(REQ_VIEW_DIFF);
4434 const char *diff_index_argv[] = {
4435 "git", "diff-index", "--root", "--patch-with-stat",
4436 "-C", "-M", "HEAD", "--", view->vid, NULL
4437 };
4439 if (!blame->commit->has_previous) {
4440 diff_index_argv[1] = "diff";
4441 diff_index_argv[2] = "--no-color";
4442 diff_index_argv[6] = "--";
4443 diff_index_argv[7] = "/dev/null";
4444 }
4446 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4447 report("Failed to allocate diff command");
4448 break;
4449 }
4450 flags |= OPEN_PREPARED;
4451 }
4453 open_view(view, REQ_VIEW_DIFF, flags);
4454 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4455 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4456 break;
4458 default:
4459 return request;
4460 }
4462 return REQ_NONE;
4463 }
4465 static bool
4466 blame_grep(struct view *view, struct line *line)
4467 {
4468 struct blame *blame = line->data;
4469 struct blame_commit *commit = blame->commit;
4470 regmatch_t pmatch;
4472 #define MATCH(text, on) \
4473 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4475 if (commit) {
4476 char buf[DATE_COLS + 1];
4478 if (MATCH(commit->title, 1) ||
4479 MATCH(commit->author, opt_author) ||
4480 MATCH(commit->id, opt_date))
4481 return TRUE;
4483 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
4484 MATCH(buf, 1))
4485 return TRUE;
4486 }
4488 return MATCH(blame->text, 1);
4490 #undef MATCH
4491 }
4493 static void
4494 blame_select(struct view *view, struct line *line)
4495 {
4496 struct blame *blame = line->data;
4497 struct blame_commit *commit = blame->commit;
4499 if (!commit)
4500 return;
4502 if (!strcmp(commit->id, NULL_ID))
4503 string_ncopy(ref_commit, "HEAD", 4);
4504 else
4505 string_copy_rev(ref_commit, commit->id);
4506 }
4508 static struct view_ops blame_ops = {
4509 "line",
4510 NULL,
4511 blame_open,
4512 blame_read,
4513 blame_draw,
4514 blame_request,
4515 blame_grep,
4516 blame_select,
4517 };
4519 /*
4520 * Status backend
4521 */
4523 struct status {
4524 char status;
4525 struct {
4526 mode_t mode;
4527 char rev[SIZEOF_REV];
4528 char name[SIZEOF_STR];
4529 } old;
4530 struct {
4531 mode_t mode;
4532 char rev[SIZEOF_REV];
4533 char name[SIZEOF_STR];
4534 } new;
4535 };
4537 static char status_onbranch[SIZEOF_STR];
4538 static struct status stage_status;
4539 static enum line_type stage_line_type;
4540 static size_t stage_chunks;
4541 static int *stage_chunk;
4543 /* This should work even for the "On branch" line. */
4544 static inline bool
4545 status_has_none(struct view *view, struct line *line)
4546 {
4547 return line < view->line + view->lines && !line[1].data;
4548 }
4550 /* Get fields from the diff line:
4551 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4552 */
4553 static inline bool
4554 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4555 {
4556 const char *old_mode = buf + 1;
4557 const char *new_mode = buf + 8;
4558 const char *old_rev = buf + 15;
4559 const char *new_rev = buf + 56;
4560 const char *status = buf + 97;
4562 if (bufsize < 98 ||
4563 old_mode[-1] != ':' ||
4564 new_mode[-1] != ' ' ||
4565 old_rev[-1] != ' ' ||
4566 new_rev[-1] != ' ' ||
4567 status[-1] != ' ')
4568 return FALSE;
4570 file->status = *status;
4572 string_copy_rev(file->old.rev, old_rev);
4573 string_copy_rev(file->new.rev, new_rev);
4575 file->old.mode = strtoul(old_mode, NULL, 8);
4576 file->new.mode = strtoul(new_mode, NULL, 8);
4578 file->old.name[0] = file->new.name[0] = 0;
4580 return TRUE;
4581 }
4583 static bool
4584 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4585 {
4586 struct status *file = NULL;
4587 struct status *unmerged = NULL;
4588 char *buf;
4589 struct io io = {};
4591 if (!run_io(&io, argv, NULL, IO_RD))
4592 return FALSE;
4594 add_line_data(view, NULL, type);
4596 while ((buf = io_get(&io, 0, TRUE))) {
4597 if (!file) {
4598 file = calloc(1, sizeof(*file));
4599 if (!file || !add_line_data(view, file, type))
4600 goto error_out;
4601 }
4603 /* Parse diff info part. */
4604 if (status) {
4605 file->status = status;
4606 if (status == 'A')
4607 string_copy(file->old.rev, NULL_ID);
4609 } else if (!file->status) {
4610 if (!status_get_diff(file, buf, strlen(buf)))
4611 goto error_out;
4613 buf = io_get(&io, 0, TRUE);
4614 if (!buf)
4615 break;
4617 /* Collapse all 'M'odified entries that follow a
4618 * associated 'U'nmerged entry. */
4619 if (file->status == 'U') {
4620 unmerged = file;
4622 } else if (unmerged) {
4623 int collapse = !strcmp(buf, unmerged->new.name);
4625 unmerged = NULL;
4626 if (collapse) {
4627 free(file);
4628 file = NULL;
4629 view->lines--;
4630 continue;
4631 }
4632 }
4633 }
4635 /* Grab the old name for rename/copy. */
4636 if (!*file->old.name &&
4637 (file->status == 'R' || file->status == 'C')) {
4638 string_ncopy(file->old.name, buf, strlen(buf));
4640 buf = io_get(&io, 0, TRUE);
4641 if (!buf)
4642 break;
4643 }
4645 /* git-ls-files just delivers a NUL separated list of
4646 * file names similar to the second half of the
4647 * git-diff-* output. */
4648 string_ncopy(file->new.name, buf, strlen(buf));
4649 if (!*file->old.name)
4650 string_copy(file->old.name, file->new.name);
4651 file = NULL;
4652 }
4654 if (io_error(&io)) {
4655 error_out:
4656 done_io(&io);
4657 return FALSE;
4658 }
4660 if (!view->line[view->lines - 1].data)
4661 add_line_data(view, NULL, LINE_STAT_NONE);
4663 done_io(&io);
4664 return TRUE;
4665 }
4667 /* Don't show unmerged entries in the staged section. */
4668 static const char *status_diff_index_argv[] = {
4669 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4670 "--cached", "-M", "HEAD", NULL
4671 };
4673 static const char *status_diff_files_argv[] = {
4674 "git", "diff-files", "-z", NULL
4675 };
4677 static const char *status_list_other_argv[] = {
4678 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4679 };
4681 static const char *status_list_no_head_argv[] = {
4682 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4683 };
4685 static const char *update_index_argv[] = {
4686 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4687 };
4689 /* Restore the previous line number to stay in the context or select a
4690 * line with something that can be updated. */
4691 static void
4692 status_restore(struct view *view)
4693 {
4694 if (view->p_lineno >= view->lines)
4695 view->p_lineno = view->lines - 1;
4696 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4697 view->p_lineno++;
4698 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4699 view->p_lineno--;
4701 /* If the above fails, always skip the "On branch" line. */
4702 if (view->p_lineno < view->lines)
4703 view->lineno = view->p_lineno;
4704 else
4705 view->lineno = 1;
4707 if (view->lineno < view->offset)
4708 view->offset = view->lineno;
4709 else if (view->offset + view->height <= view->lineno)
4710 view->offset = view->lineno - view->height + 1;
4712 view->p_restore = FALSE;
4713 }
4715 /* First parse staged info using git-diff-index(1), then parse unstaged
4716 * info using git-diff-files(1), and finally untracked files using
4717 * git-ls-files(1). */
4718 static bool
4719 status_open(struct view *view)
4720 {
4721 reset_view(view);
4723 add_line_data(view, NULL, LINE_STAT_HEAD);
4724 if (is_initial_commit())
4725 string_copy(status_onbranch, "Initial commit");
4726 else if (!*opt_head)
4727 string_copy(status_onbranch, "Not currently on any branch");
4728 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4729 return FALSE;
4731 run_io_bg(update_index_argv);
4733 if (is_initial_commit()) {
4734 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4735 return FALSE;
4736 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4737 return FALSE;
4738 }
4740 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4741 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4742 return FALSE;
4744 /* Restore the exact position or use the specialized restore
4745 * mode? */
4746 if (!view->p_restore)
4747 status_restore(view);
4748 return TRUE;
4749 }
4751 static bool
4752 status_draw(struct view *view, struct line *line, unsigned int lineno)
4753 {
4754 struct status *status = line->data;
4755 enum line_type type;
4756 const char *text;
4758 if (!status) {
4759 switch (line->type) {
4760 case LINE_STAT_STAGED:
4761 type = LINE_STAT_SECTION;
4762 text = "Changes to be committed:";
4763 break;
4765 case LINE_STAT_UNSTAGED:
4766 type = LINE_STAT_SECTION;
4767 text = "Changed but not updated:";
4768 break;
4770 case LINE_STAT_UNTRACKED:
4771 type = LINE_STAT_SECTION;
4772 text = "Untracked files:";
4773 break;
4775 case LINE_STAT_NONE:
4776 type = LINE_DEFAULT;
4777 text = " (no files)";
4778 break;
4780 case LINE_STAT_HEAD:
4781 type = LINE_STAT_HEAD;
4782 text = status_onbranch;
4783 break;
4785 default:
4786 return FALSE;
4787 }
4788 } else {
4789 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4791 buf[0] = status->status;
4792 if (draw_text(view, line->type, buf, TRUE))
4793 return TRUE;
4794 type = LINE_DEFAULT;
4795 text = status->new.name;
4796 }
4798 draw_text(view, type, text, TRUE);
4799 return TRUE;
4800 }
4802 static enum request
4803 status_enter(struct view *view, struct line *line)
4804 {
4805 struct status *status = line->data;
4806 const char *oldpath = status ? status->old.name : NULL;
4807 /* Diffs for unmerged entries are empty when passing the new
4808 * path, so leave it empty. */
4809 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4810 const char *info;
4811 enum open_flags split;
4812 struct view *stage = VIEW(REQ_VIEW_STAGE);
4814 if (line->type == LINE_STAT_NONE ||
4815 (!status && line[1].type == LINE_STAT_NONE)) {
4816 report("No file to diff");
4817 return REQ_NONE;
4818 }
4820 switch (line->type) {
4821 case LINE_STAT_STAGED:
4822 if (is_initial_commit()) {
4823 const char *no_head_diff_argv[] = {
4824 "git", "diff", "--no-color", "--patch-with-stat",
4825 "--", "/dev/null", newpath, NULL
4826 };
4828 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4829 return REQ_QUIT;
4830 } else {
4831 const char *index_show_argv[] = {
4832 "git", "diff-index", "--root", "--patch-with-stat",
4833 "-C", "-M", "--cached", "HEAD", "--",
4834 oldpath, newpath, NULL
4835 };
4837 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4838 return REQ_QUIT;
4839 }
4841 if (status)
4842 info = "Staged changes to %s";
4843 else
4844 info = "Staged changes";
4845 break;
4847 case LINE_STAT_UNSTAGED:
4848 {
4849 const char *files_show_argv[] = {
4850 "git", "diff-files", "--root", "--patch-with-stat",
4851 "-C", "-M", "--", oldpath, newpath, NULL
4852 };
4854 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
4855 return REQ_QUIT;
4856 if (status)
4857 info = "Unstaged changes to %s";
4858 else
4859 info = "Unstaged changes";
4860 break;
4861 }
4862 case LINE_STAT_UNTRACKED:
4863 if (!newpath) {
4864 report("No file to show");
4865 return REQ_NONE;
4866 }
4868 if (!suffixcmp(status->new.name, -1, "/")) {
4869 report("Cannot display a directory");
4870 return REQ_NONE;
4871 }
4873 if (!prepare_update_file(stage, newpath))
4874 return REQ_QUIT;
4875 info = "Untracked file %s";
4876 break;
4878 case LINE_STAT_HEAD:
4879 return REQ_NONE;
4881 default:
4882 die("line type %d not handled in switch", line->type);
4883 }
4885 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4886 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
4887 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4888 if (status) {
4889 stage_status = *status;
4890 } else {
4891 memset(&stage_status, 0, sizeof(stage_status));
4892 }
4894 stage_line_type = line->type;
4895 stage_chunks = 0;
4896 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4897 }
4899 return REQ_NONE;
4900 }
4902 static bool
4903 status_exists(struct status *status, enum line_type type)
4904 {
4905 struct view *view = VIEW(REQ_VIEW_STATUS);
4906 unsigned long lineno;
4908 for (lineno = 0; lineno < view->lines; lineno++) {
4909 struct line *line = &view->line[lineno];
4910 struct status *pos = line->data;
4912 if (line->type != type)
4913 continue;
4914 if (!pos && (!status || !status->status) && line[1].data) {
4915 select_view_line(view, lineno);
4916 return TRUE;
4917 }
4918 if (pos && !strcmp(status->new.name, pos->new.name)) {
4919 select_view_line(view, lineno);
4920 return TRUE;
4921 }
4922 }
4924 return FALSE;
4925 }
4928 static bool
4929 status_update_prepare(struct io *io, enum line_type type)
4930 {
4931 const char *staged_argv[] = {
4932 "git", "update-index", "-z", "--index-info", NULL
4933 };
4934 const char *others_argv[] = {
4935 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
4936 };
4938 switch (type) {
4939 case LINE_STAT_STAGED:
4940 return run_io(io, staged_argv, opt_cdup, IO_WR);
4942 case LINE_STAT_UNSTAGED:
4943 return run_io(io, others_argv, opt_cdup, IO_WR);
4945 case LINE_STAT_UNTRACKED:
4946 return run_io(io, others_argv, NULL, IO_WR);
4948 default:
4949 die("line type %d not handled in switch", type);
4950 return FALSE;
4951 }
4952 }
4954 static bool
4955 status_update_write(struct io *io, struct status *status, enum line_type type)
4956 {
4957 char buf[SIZEOF_STR];
4958 size_t bufsize = 0;
4960 switch (type) {
4961 case LINE_STAT_STAGED:
4962 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4963 status->old.mode,
4964 status->old.rev,
4965 status->old.name, 0))
4966 return FALSE;
4967 break;
4969 case LINE_STAT_UNSTAGED:
4970 case LINE_STAT_UNTRACKED:
4971 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4972 return FALSE;
4973 break;
4975 default:
4976 die("line type %d not handled in switch", type);
4977 }
4979 return io_write(io, buf, bufsize);
4980 }
4982 static bool
4983 status_update_file(struct status *status, enum line_type type)
4984 {
4985 struct io io = {};
4986 bool result;
4988 if (!status_update_prepare(&io, type))
4989 return FALSE;
4991 result = status_update_write(&io, status, type);
4992 done_io(&io);
4993 return result;
4994 }
4996 static bool
4997 status_update_files(struct view *view, struct line *line)
4998 {
4999 struct io io = {};
5000 bool result = TRUE;
5001 struct line *pos = view->line + view->lines;
5002 int files = 0;
5003 int file, done;
5005 if (!status_update_prepare(&io, line->type))
5006 return FALSE;
5008 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5009 files++;
5011 for (file = 0, done = 0; result && file < files; line++, file++) {
5012 int almost_done = file * 100 / files;
5014 if (almost_done > done) {
5015 done = almost_done;
5016 string_format(view->ref, "updating file %u of %u (%d%% done)",
5017 file, files, done);
5018 update_view_title(view);
5019 }
5020 result = status_update_write(&io, line->data, line->type);
5021 }
5023 done_io(&io);
5024 return result;
5025 }
5027 static bool
5028 status_update(struct view *view)
5029 {
5030 struct line *line = &view->line[view->lineno];
5032 assert(view->lines);
5034 if (!line->data) {
5035 /* This should work even for the "On branch" line. */
5036 if (line < view->line + view->lines && !line[1].data) {
5037 report("Nothing to update");
5038 return FALSE;
5039 }
5041 if (!status_update_files(view, line + 1)) {
5042 report("Failed to update file status");
5043 return FALSE;
5044 }
5046 } else if (!status_update_file(line->data, line->type)) {
5047 report("Failed to update file status");
5048 return FALSE;
5049 }
5051 return TRUE;
5052 }
5054 static bool
5055 status_revert(struct status *status, enum line_type type, bool has_none)
5056 {
5057 if (!status || type != LINE_STAT_UNSTAGED) {
5058 if (type == LINE_STAT_STAGED) {
5059 report("Cannot revert changes to staged files");
5060 } else if (type == LINE_STAT_UNTRACKED) {
5061 report("Cannot revert changes to untracked files");
5062 } else if (has_none) {
5063 report("Nothing to revert");
5064 } else {
5065 report("Cannot revert changes to multiple files");
5066 }
5067 return FALSE;
5069 } else {
5070 const char *checkout_argv[] = {
5071 "git", "checkout", "--", status->old.name, NULL
5072 };
5074 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
5075 return FALSE;
5076 return run_io_fg(checkout_argv, opt_cdup);
5077 }
5078 }
5080 static enum request
5081 status_request(struct view *view, enum request request, struct line *line)
5082 {
5083 struct status *status = line->data;
5085 switch (request) {
5086 case REQ_STATUS_UPDATE:
5087 if (!status_update(view))
5088 return REQ_NONE;
5089 break;
5091 case REQ_STATUS_REVERT:
5092 if (!status_revert(status, line->type, status_has_none(view, line)))
5093 return REQ_NONE;
5094 break;
5096 case REQ_STATUS_MERGE:
5097 if (!status || status->status != 'U') {
5098 report("Merging only possible for files with unmerged status ('U').");
5099 return REQ_NONE;
5100 }
5101 open_mergetool(status->new.name);
5102 break;
5104 case REQ_EDIT:
5105 if (!status)
5106 return request;
5107 if (status->status == 'D') {
5108 report("File has been deleted.");
5109 return REQ_NONE;
5110 }
5112 open_editor(status->status != '?', status->new.name);
5113 break;
5115 case REQ_VIEW_BLAME:
5116 if (status) {
5117 string_copy(opt_file, status->new.name);
5118 opt_ref[0] = 0;
5119 }
5120 return request;
5122 case REQ_ENTER:
5123 /* After returning the status view has been split to
5124 * show the stage view. No further reloading is
5125 * necessary. */
5126 status_enter(view, line);
5127 return REQ_NONE;
5129 case REQ_REFRESH:
5130 /* Simply reload the view. */
5131 break;
5133 default:
5134 return request;
5135 }
5137 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5139 return REQ_NONE;
5140 }
5142 static void
5143 status_select(struct view *view, struct line *line)
5144 {
5145 struct status *status = line->data;
5146 char file[SIZEOF_STR] = "all files";
5147 const char *text;
5148 const char *key;
5150 if (status && !string_format(file, "'%s'", status->new.name))
5151 return;
5153 if (!status && line[1].type == LINE_STAT_NONE)
5154 line++;
5156 switch (line->type) {
5157 case LINE_STAT_STAGED:
5158 text = "Press %s to unstage %s for commit";
5159 break;
5161 case LINE_STAT_UNSTAGED:
5162 text = "Press %s to stage %s for commit";
5163 break;
5165 case LINE_STAT_UNTRACKED:
5166 text = "Press %s to stage %s for addition";
5167 break;
5169 case LINE_STAT_HEAD:
5170 case LINE_STAT_NONE:
5171 text = "Nothing to update";
5172 break;
5174 default:
5175 die("line type %d not handled in switch", line->type);
5176 }
5178 if (status && status->status == 'U') {
5179 text = "Press %s to resolve conflict in %s";
5180 key = get_key(REQ_STATUS_MERGE);
5182 } else {
5183 key = get_key(REQ_STATUS_UPDATE);
5184 }
5186 string_format(view->ref, text, key, file);
5187 }
5189 static bool
5190 status_grep(struct view *view, struct line *line)
5191 {
5192 struct status *status = line->data;
5193 enum { S_STATUS, S_NAME, S_END } state;
5194 char buf[2] = "?";
5195 regmatch_t pmatch;
5197 if (!status)
5198 return FALSE;
5200 for (state = S_STATUS; state < S_END; state++) {
5201 const char *text;
5203 switch (state) {
5204 case S_NAME: text = status->new.name; break;
5205 case S_STATUS:
5206 buf[0] = status->status;
5207 text = buf;
5208 break;
5210 default:
5211 return FALSE;
5212 }
5214 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5215 return TRUE;
5216 }
5218 return FALSE;
5219 }
5221 static struct view_ops status_ops = {
5222 "file",
5223 NULL,
5224 status_open,
5225 NULL,
5226 status_draw,
5227 status_request,
5228 status_grep,
5229 status_select,
5230 };
5233 static bool
5234 stage_diff_write(struct io *io, struct line *line, struct line *end)
5235 {
5236 while (line < end) {
5237 if (!io_write(io, line->data, strlen(line->data)) ||
5238 !io_write(io, "\n", 1))
5239 return FALSE;
5240 line++;
5241 if (line->type == LINE_DIFF_CHUNK ||
5242 line->type == LINE_DIFF_HEADER)
5243 break;
5244 }
5246 return TRUE;
5247 }
5249 static struct line *
5250 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5251 {
5252 for (; view->line < line; line--)
5253 if (line->type == type)
5254 return line;
5256 return NULL;
5257 }
5259 static bool
5260 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5261 {
5262 const char *apply_argv[SIZEOF_ARG] = {
5263 "git", "apply", "--whitespace=nowarn", NULL
5264 };
5265 struct line *diff_hdr;
5266 struct io io = {};
5267 int argc = 3;
5269 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5270 if (!diff_hdr)
5271 return FALSE;
5273 if (!revert)
5274 apply_argv[argc++] = "--cached";
5275 if (revert || stage_line_type == LINE_STAT_STAGED)
5276 apply_argv[argc++] = "-R";
5277 apply_argv[argc++] = "-";
5278 apply_argv[argc++] = NULL;
5279 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5280 return FALSE;
5282 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5283 !stage_diff_write(&io, chunk, view->line + view->lines))
5284 chunk = NULL;
5286 done_io(&io);
5287 run_io_bg(update_index_argv);
5289 return chunk ? TRUE : FALSE;
5290 }
5292 static bool
5293 stage_update(struct view *view, struct line *line)
5294 {
5295 struct line *chunk = NULL;
5297 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5298 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5300 if (chunk) {
5301 if (!stage_apply_chunk(view, chunk, FALSE)) {
5302 report("Failed to apply chunk");
5303 return FALSE;
5304 }
5306 } else if (!stage_status.status) {
5307 view = VIEW(REQ_VIEW_STATUS);
5309 for (line = view->line; line < view->line + view->lines; line++)
5310 if (line->type == stage_line_type)
5311 break;
5313 if (!status_update_files(view, line + 1)) {
5314 report("Failed to update files");
5315 return FALSE;
5316 }
5318 } else if (!status_update_file(&stage_status, stage_line_type)) {
5319 report("Failed to update file");
5320 return FALSE;
5321 }
5323 return TRUE;
5324 }
5326 static bool
5327 stage_revert(struct view *view, struct line *line)
5328 {
5329 struct line *chunk = NULL;
5331 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5332 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5334 if (chunk) {
5335 if (!prompt_yesno("Are you sure you want to revert changes?"))
5336 return FALSE;
5338 if (!stage_apply_chunk(view, chunk, TRUE)) {
5339 report("Failed to revert chunk");
5340 return FALSE;
5341 }
5342 return TRUE;
5344 } else {
5345 return status_revert(stage_status.status ? &stage_status : NULL,
5346 stage_line_type, FALSE);
5347 }
5348 }
5351 static void
5352 stage_next(struct view *view, struct line *line)
5353 {
5354 int i;
5356 if (!stage_chunks) {
5357 static size_t alloc = 0;
5358 int *tmp;
5360 for (line = view->line; line < view->line + view->lines; line++) {
5361 if (line->type != LINE_DIFF_CHUNK)
5362 continue;
5364 tmp = realloc_items(stage_chunk, &alloc,
5365 stage_chunks, sizeof(*tmp));
5366 if (!tmp) {
5367 report("Allocation failure");
5368 return;
5369 }
5371 stage_chunk = tmp;
5372 stage_chunk[stage_chunks++] = line - view->line;
5373 }
5374 }
5376 for (i = 0; i < stage_chunks; i++) {
5377 if (stage_chunk[i] > view->lineno) {
5378 do_scroll_view(view, stage_chunk[i] - view->lineno);
5379 report("Chunk %d of %d", i + 1, stage_chunks);
5380 return;
5381 }
5382 }
5384 report("No next chunk found");
5385 }
5387 static enum request
5388 stage_request(struct view *view, enum request request, struct line *line)
5389 {
5390 switch (request) {
5391 case REQ_STATUS_UPDATE:
5392 if (!stage_update(view, line))
5393 return REQ_NONE;
5394 break;
5396 case REQ_STATUS_REVERT:
5397 if (!stage_revert(view, line))
5398 return REQ_NONE;
5399 break;
5401 case REQ_STAGE_NEXT:
5402 if (stage_line_type == LINE_STAT_UNTRACKED) {
5403 report("File is untracked; press %s to add",
5404 get_key(REQ_STATUS_UPDATE));
5405 return REQ_NONE;
5406 }
5407 stage_next(view, line);
5408 return REQ_NONE;
5410 case REQ_EDIT:
5411 if (!stage_status.new.name[0])
5412 return request;
5413 if (stage_status.status == 'D') {
5414 report("File has been deleted.");
5415 return REQ_NONE;
5416 }
5418 open_editor(stage_status.status != '?', stage_status.new.name);
5419 break;
5421 case REQ_REFRESH:
5422 /* Reload everything ... */
5423 break;
5425 case REQ_VIEW_BLAME:
5426 if (stage_status.new.name[0]) {
5427 string_copy(opt_file, stage_status.new.name);
5428 opt_ref[0] = 0;
5429 }
5430 return request;
5432 case REQ_ENTER:
5433 return pager_request(view, request, line);
5435 default:
5436 return request;
5437 }
5439 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5440 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
5442 /* Check whether the staged entry still exists, and close the
5443 * stage view if it doesn't. */
5444 if (!status_exists(&stage_status, stage_line_type)) {
5445 status_restore(VIEW(REQ_VIEW_STATUS));
5446 return REQ_VIEW_CLOSE;
5447 }
5449 if (stage_line_type == LINE_STAT_UNTRACKED) {
5450 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5451 report("Cannot display a directory");
5452 return REQ_NONE;
5453 }
5455 if (!prepare_update_file(view, stage_status.new.name)) {
5456 report("Failed to open file: %s", strerror(errno));
5457 return REQ_NONE;
5458 }
5459 }
5460 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5462 return REQ_NONE;
5463 }
5465 static struct view_ops stage_ops = {
5466 "line",
5467 NULL,
5468 NULL,
5469 pager_read,
5470 pager_draw,
5471 stage_request,
5472 pager_grep,
5473 pager_select,
5474 };
5477 /*
5478 * Revision graph
5479 */
5481 struct commit {
5482 char id[SIZEOF_REV]; /* SHA1 ID. */
5483 char title[128]; /* First line of the commit message. */
5484 char author[75]; /* Author of the commit. */
5485 struct tm time; /* Date from the author ident. */
5486 struct ref **refs; /* Repository references. */
5487 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5488 size_t graph_size; /* The width of the graph array. */
5489 bool has_parents; /* Rewritten --parents seen. */
5490 };
5492 /* Size of rev graph with no "padding" columns */
5493 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5495 struct rev_graph {
5496 struct rev_graph *prev, *next, *parents;
5497 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5498 size_t size;
5499 struct commit *commit;
5500 size_t pos;
5501 unsigned int boundary:1;
5502 };
5504 /* Parents of the commit being visualized. */
5505 static struct rev_graph graph_parents[4];
5507 /* The current stack of revisions on the graph. */
5508 static struct rev_graph graph_stacks[4] = {
5509 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5510 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5511 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5512 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5513 };
5515 static inline bool
5516 graph_parent_is_merge(struct rev_graph *graph)
5517 {
5518 return graph->parents->size > 1;
5519 }
5521 static inline void
5522 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5523 {
5524 struct commit *commit = graph->commit;
5526 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5527 commit->graph[commit->graph_size++] = symbol;
5528 }
5530 static void
5531 clear_rev_graph(struct rev_graph *graph)
5532 {
5533 graph->boundary = 0;
5534 graph->size = graph->pos = 0;
5535 graph->commit = NULL;
5536 memset(graph->parents, 0, sizeof(*graph->parents));
5537 }
5539 static void
5540 done_rev_graph(struct rev_graph *graph)
5541 {
5542 if (graph_parent_is_merge(graph) &&
5543 graph->pos < graph->size - 1 &&
5544 graph->next->size == graph->size + graph->parents->size - 1) {
5545 size_t i = graph->pos + graph->parents->size - 1;
5547 graph->commit->graph_size = i * 2;
5548 while (i < graph->next->size - 1) {
5549 append_to_rev_graph(graph, ' ');
5550 append_to_rev_graph(graph, '\\');
5551 i++;
5552 }
5553 }
5555 clear_rev_graph(graph);
5556 }
5558 static void
5559 push_rev_graph(struct rev_graph *graph, const char *parent)
5560 {
5561 int i;
5563 /* "Collapse" duplicate parents lines.
5564 *
5565 * FIXME: This needs to also update update the drawn graph but
5566 * for now it just serves as a method for pruning graph lines. */
5567 for (i = 0; i < graph->size; i++)
5568 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5569 return;
5571 if (graph->size < SIZEOF_REVITEMS) {
5572 string_copy_rev(graph->rev[graph->size++], parent);
5573 }
5574 }
5576 static chtype
5577 get_rev_graph_symbol(struct rev_graph *graph)
5578 {
5579 chtype symbol;
5581 if (graph->boundary)
5582 symbol = REVGRAPH_BOUND;
5583 else if (graph->parents->size == 0)
5584 symbol = REVGRAPH_INIT;
5585 else if (graph_parent_is_merge(graph))
5586 symbol = REVGRAPH_MERGE;
5587 else if (graph->pos >= graph->size)
5588 symbol = REVGRAPH_BRANCH;
5589 else
5590 symbol = REVGRAPH_COMMIT;
5592 return symbol;
5593 }
5595 static void
5596 draw_rev_graph(struct rev_graph *graph)
5597 {
5598 struct rev_filler {
5599 chtype separator, line;
5600 };
5601 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5602 static struct rev_filler fillers[] = {
5603 { ' ', '|' },
5604 { '`', '.' },
5605 { '\'', ' ' },
5606 { '/', ' ' },
5607 };
5608 chtype symbol = get_rev_graph_symbol(graph);
5609 struct rev_filler *filler;
5610 size_t i;
5612 if (opt_line_graphics)
5613 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5615 filler = &fillers[DEFAULT];
5617 for (i = 0; i < graph->pos; i++) {
5618 append_to_rev_graph(graph, filler->line);
5619 if (graph_parent_is_merge(graph->prev) &&
5620 graph->prev->pos == i)
5621 filler = &fillers[RSHARP];
5623 append_to_rev_graph(graph, filler->separator);
5624 }
5626 /* Place the symbol for this revision. */
5627 append_to_rev_graph(graph, symbol);
5629 if (graph->prev->size > graph->size)
5630 filler = &fillers[RDIAG];
5631 else
5632 filler = &fillers[DEFAULT];
5634 i++;
5636 for (; i < graph->size; i++) {
5637 append_to_rev_graph(graph, filler->separator);
5638 append_to_rev_graph(graph, filler->line);
5639 if (graph_parent_is_merge(graph->prev) &&
5640 i < graph->prev->pos + graph->parents->size)
5641 filler = &fillers[RSHARP];
5642 if (graph->prev->size > graph->size)
5643 filler = &fillers[LDIAG];
5644 }
5646 if (graph->prev->size > graph->size) {
5647 append_to_rev_graph(graph, filler->separator);
5648 if (filler->line != ' ')
5649 append_to_rev_graph(graph, filler->line);
5650 }
5651 }
5653 /* Prepare the next rev graph */
5654 static void
5655 prepare_rev_graph(struct rev_graph *graph)
5656 {
5657 size_t i;
5659 /* First, traverse all lines of revisions up to the active one. */
5660 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5661 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5662 break;
5664 push_rev_graph(graph->next, graph->rev[graph->pos]);
5665 }
5667 /* Interleave the new revision parent(s). */
5668 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5669 push_rev_graph(graph->next, graph->parents->rev[i]);
5671 /* Lastly, put any remaining revisions. */
5672 for (i = graph->pos + 1; i < graph->size; i++)
5673 push_rev_graph(graph->next, graph->rev[i]);
5674 }
5676 static void
5677 update_rev_graph(struct view *view, struct rev_graph *graph)
5678 {
5679 /* If this is the finalizing update ... */
5680 if (graph->commit)
5681 prepare_rev_graph(graph);
5683 /* Graph visualization needs a one rev look-ahead,
5684 * so the first update doesn't visualize anything. */
5685 if (!graph->prev->commit)
5686 return;
5688 if (view->lines > 2)
5689 view->line[view->lines - 3].dirty = 1;
5690 if (view->lines > 1)
5691 view->line[view->lines - 2].dirty = 1;
5692 draw_rev_graph(graph->prev);
5693 done_rev_graph(graph->prev->prev);
5694 }
5697 /*
5698 * Main view backend
5699 */
5701 static const char *main_argv[SIZEOF_ARG] = {
5702 "git", "log", "--no-color", "--pretty=raw", "--parents",
5703 "--topo-order", "%(head)", NULL
5704 };
5706 static bool
5707 main_draw(struct view *view, struct line *line, unsigned int lineno)
5708 {
5709 struct commit *commit = line->data;
5711 if (!*commit->author)
5712 return FALSE;
5714 if (opt_date && draw_date(view, &commit->time))
5715 return TRUE;
5717 if (opt_author &&
5718 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5719 return TRUE;
5721 if (opt_rev_graph && commit->graph_size &&
5722 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5723 return TRUE;
5725 if (opt_show_refs && commit->refs) {
5726 size_t i = 0;
5728 do {
5729 enum line_type type;
5731 if (commit->refs[i]->head)
5732 type = LINE_MAIN_HEAD;
5733 else if (commit->refs[i]->ltag)
5734 type = LINE_MAIN_LOCAL_TAG;
5735 else if (commit->refs[i]->tag)
5736 type = LINE_MAIN_TAG;
5737 else if (commit->refs[i]->tracked)
5738 type = LINE_MAIN_TRACKED;
5739 else if (commit->refs[i]->remote)
5740 type = LINE_MAIN_REMOTE;
5741 else
5742 type = LINE_MAIN_REF;
5744 if (draw_text(view, type, "[", TRUE) ||
5745 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5746 draw_text(view, type, "]", TRUE))
5747 return TRUE;
5749 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5750 return TRUE;
5751 } while (commit->refs[i++]->next);
5752 }
5754 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5755 return TRUE;
5756 }
5758 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5759 static bool
5760 main_read(struct view *view, char *line)
5761 {
5762 static struct rev_graph *graph = graph_stacks;
5763 enum line_type type;
5764 struct commit *commit;
5766 if (!line) {
5767 int i;
5769 if (!view->lines && !view->parent)
5770 die("No revisions match the given arguments.");
5771 if (view->lines > 0) {
5772 commit = view->line[view->lines - 1].data;
5773 view->line[view->lines - 1].dirty = 1;
5774 if (!*commit->author) {
5775 view->lines--;
5776 free(commit);
5777 graph->commit = NULL;
5778 }
5779 }
5780 update_rev_graph(view, graph);
5782 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5783 clear_rev_graph(&graph_stacks[i]);
5784 return TRUE;
5785 }
5787 type = get_line_type(line);
5788 if (type == LINE_COMMIT) {
5789 commit = calloc(1, sizeof(struct commit));
5790 if (!commit)
5791 return FALSE;
5793 line += STRING_SIZE("commit ");
5794 if (*line == '-') {
5795 graph->boundary = 1;
5796 line++;
5797 }
5799 string_copy_rev(commit->id, line);
5800 commit->refs = get_refs(commit->id);
5801 graph->commit = commit;
5802 add_line_data(view, commit, LINE_MAIN_COMMIT);
5804 while ((line = strchr(line, ' '))) {
5805 line++;
5806 push_rev_graph(graph->parents, line);
5807 commit->has_parents = TRUE;
5808 }
5809 return TRUE;
5810 }
5812 if (!view->lines)
5813 return TRUE;
5814 commit = view->line[view->lines - 1].data;
5816 switch (type) {
5817 case LINE_PARENT:
5818 if (commit->has_parents)
5819 break;
5820 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5821 break;
5823 case LINE_AUTHOR:
5824 parse_author_line(line + STRING_SIZE("author "),
5825 commit->author, sizeof(commit->author),
5826 &commit->time);
5827 update_rev_graph(view, graph);
5828 graph = graph->next;
5829 break;
5831 default:
5832 /* Fill in the commit title if it has not already been set. */
5833 if (commit->title[0])
5834 break;
5836 /* Require titles to start with a non-space character at the
5837 * offset used by git log. */
5838 if (strncmp(line, " ", 4))
5839 break;
5840 line += 4;
5841 /* Well, if the title starts with a whitespace character,
5842 * try to be forgiving. Otherwise we end up with no title. */
5843 while (isspace(*line))
5844 line++;
5845 if (*line == '\0')
5846 break;
5847 /* FIXME: More graceful handling of titles; append "..." to
5848 * shortened titles, etc. */
5850 string_ncopy(commit->title, line, strlen(line));
5851 view->line[view->lines - 1].dirty = 1;
5852 }
5854 return TRUE;
5855 }
5857 static enum request
5858 main_request(struct view *view, enum request request, struct line *line)
5859 {
5860 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5862 switch (request) {
5863 case REQ_ENTER:
5864 open_view(view, REQ_VIEW_DIFF, flags);
5865 break;
5866 case REQ_REFRESH:
5867 load_refs();
5868 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5869 break;
5870 default:
5871 return request;
5872 }
5874 return REQ_NONE;
5875 }
5877 static bool
5878 grep_refs(struct ref **refs, regex_t *regex)
5879 {
5880 regmatch_t pmatch;
5881 size_t i = 0;
5883 if (!refs)
5884 return FALSE;
5885 do {
5886 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5887 return TRUE;
5888 } while (refs[i++]->next);
5890 return FALSE;
5891 }
5893 static bool
5894 main_grep(struct view *view, struct line *line)
5895 {
5896 struct commit *commit = line->data;
5897 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5898 char buf[DATE_COLS + 1];
5899 regmatch_t pmatch;
5901 for (state = S_TITLE; state < S_END; state++) {
5902 char *text;
5904 switch (state) {
5905 case S_TITLE: text = commit->title; break;
5906 case S_AUTHOR:
5907 if (!opt_author)
5908 continue;
5909 text = commit->author;
5910 break;
5911 case S_DATE:
5912 if (!opt_date)
5913 continue;
5914 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5915 continue;
5916 text = buf;
5917 break;
5918 case S_REFS:
5919 if (!opt_show_refs)
5920 continue;
5921 if (grep_refs(commit->refs, view->regex) == TRUE)
5922 return TRUE;
5923 continue;
5924 default:
5925 return FALSE;
5926 }
5928 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5929 return TRUE;
5930 }
5932 return FALSE;
5933 }
5935 static void
5936 main_select(struct view *view, struct line *line)
5937 {
5938 struct commit *commit = line->data;
5940 string_copy_rev(view->ref, commit->id);
5941 string_copy_rev(ref_commit, view->ref);
5942 }
5944 static struct view_ops main_ops = {
5945 "commit",
5946 main_argv,
5947 NULL,
5948 main_read,
5949 main_draw,
5950 main_request,
5951 main_grep,
5952 main_select,
5953 };
5956 /*
5957 * Unicode / UTF-8 handling
5958 *
5959 * NOTE: Much of the following code for dealing with unicode is derived from
5960 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5961 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5962 */
5964 /* I've (over)annotated a lot of code snippets because I am not entirely
5965 * confident that the approach taken by this small UTF-8 interface is correct.
5966 * --jonas */
5968 static inline int
5969 unicode_width(unsigned long c)
5970 {
5971 if (c >= 0x1100 &&
5972 (c <= 0x115f /* Hangul Jamo */
5973 || c == 0x2329
5974 || c == 0x232a
5975 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5976 /* CJK ... Yi */
5977 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5978 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5979 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5980 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5981 || (c >= 0xffe0 && c <= 0xffe6)
5982 || (c >= 0x20000 && c <= 0x2fffd)
5983 || (c >= 0x30000 && c <= 0x3fffd)))
5984 return 2;
5986 if (c == '\t')
5987 return opt_tab_size;
5989 return 1;
5990 }
5992 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5993 * Illegal bytes are set one. */
5994 static const unsigned char utf8_bytes[256] = {
5995 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,
5996 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,
5997 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,
5998 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,
5999 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,
6000 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,
6001 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,
6002 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,
6003 };
6005 /* Decode UTF-8 multi-byte representation into a unicode character. */
6006 static inline unsigned long
6007 utf8_to_unicode(const char *string, size_t length)
6008 {
6009 unsigned long unicode;
6011 switch (length) {
6012 case 1:
6013 unicode = string[0];
6014 break;
6015 case 2:
6016 unicode = (string[0] & 0x1f) << 6;
6017 unicode += (string[1] & 0x3f);
6018 break;
6019 case 3:
6020 unicode = (string[0] & 0x0f) << 12;
6021 unicode += ((string[1] & 0x3f) << 6);
6022 unicode += (string[2] & 0x3f);
6023 break;
6024 case 4:
6025 unicode = (string[0] & 0x0f) << 18;
6026 unicode += ((string[1] & 0x3f) << 12);
6027 unicode += ((string[2] & 0x3f) << 6);
6028 unicode += (string[3] & 0x3f);
6029 break;
6030 case 5:
6031 unicode = (string[0] & 0x0f) << 24;
6032 unicode += ((string[1] & 0x3f) << 18);
6033 unicode += ((string[2] & 0x3f) << 12);
6034 unicode += ((string[3] & 0x3f) << 6);
6035 unicode += (string[4] & 0x3f);
6036 break;
6037 case 6:
6038 unicode = (string[0] & 0x01) << 30;
6039 unicode += ((string[1] & 0x3f) << 24);
6040 unicode += ((string[2] & 0x3f) << 18);
6041 unicode += ((string[3] & 0x3f) << 12);
6042 unicode += ((string[4] & 0x3f) << 6);
6043 unicode += (string[5] & 0x3f);
6044 break;
6045 default:
6046 die("Invalid unicode length");
6047 }
6049 /* Invalid characters could return the special 0xfffd value but NUL
6050 * should be just as good. */
6051 return unicode > 0xffff ? 0 : unicode;
6052 }
6054 /* Calculates how much of string can be shown within the given maximum width
6055 * and sets trimmed parameter to non-zero value if all of string could not be
6056 * shown. If the reserve flag is TRUE, it will reserve at least one
6057 * trailing character, which can be useful when drawing a delimiter.
6058 *
6059 * Returns the number of bytes to output from string to satisfy max_width. */
6060 static size_t
6061 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
6062 {
6063 const char *start = string;
6064 const char *end = strchr(string, '\0');
6065 unsigned char last_bytes = 0;
6066 size_t last_ucwidth = 0;
6068 *width = 0;
6069 *trimmed = 0;
6071 while (string < end) {
6072 int c = *(unsigned char *) string;
6073 unsigned char bytes = utf8_bytes[c];
6074 size_t ucwidth;
6075 unsigned long unicode;
6077 if (string + bytes > end)
6078 break;
6080 /* Change representation to figure out whether
6081 * it is a single- or double-width character. */
6083 unicode = utf8_to_unicode(string, bytes);
6084 /* FIXME: Graceful handling of invalid unicode character. */
6085 if (!unicode)
6086 break;
6088 ucwidth = unicode_width(unicode);
6089 *width += ucwidth;
6090 if (*width > max_width) {
6091 *trimmed = 1;
6092 *width -= ucwidth;
6093 if (reserve && *width == max_width) {
6094 string -= last_bytes;
6095 *width -= last_ucwidth;
6096 }
6097 break;
6098 }
6100 string += bytes;
6101 last_bytes = bytes;
6102 last_ucwidth = ucwidth;
6103 }
6105 return string - start;
6106 }
6109 /*
6110 * Status management
6111 */
6113 /* Whether or not the curses interface has been initialized. */
6114 static bool cursed = FALSE;
6116 /* The status window is used for polling keystrokes. */
6117 static WINDOW *status_win;
6119 static bool status_empty = FALSE;
6121 /* Update status and title window. */
6122 static void
6123 report(const char *msg, ...)
6124 {
6125 struct view *view = display[current_view];
6127 if (input_mode)
6128 return;
6130 if (!view) {
6131 char buf[SIZEOF_STR];
6132 va_list args;
6134 va_start(args, msg);
6135 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6136 buf[sizeof(buf) - 1] = 0;
6137 buf[sizeof(buf) - 2] = '.';
6138 buf[sizeof(buf) - 3] = '.';
6139 buf[sizeof(buf) - 4] = '.';
6140 }
6141 va_end(args);
6142 die("%s", buf);
6143 }
6145 if (!status_empty || *msg) {
6146 va_list args;
6148 va_start(args, msg);
6150 wmove(status_win, 0, 0);
6151 if (*msg) {
6152 vwprintw(status_win, msg, args);
6153 status_empty = FALSE;
6154 } else {
6155 status_empty = TRUE;
6156 }
6157 wclrtoeol(status_win);
6158 wrefresh(status_win);
6160 va_end(args);
6161 }
6163 update_view_title(view);
6164 update_display_cursor(view);
6165 }
6167 /* Controls when nodelay should be in effect when polling user input. */
6168 static void
6169 set_nonblocking_input(bool loading)
6170 {
6171 static unsigned int loading_views;
6173 if ((loading == FALSE && loading_views-- == 1) ||
6174 (loading == TRUE && loading_views++ == 0))
6175 nodelay(status_win, loading);
6176 }
6178 static void
6179 init_display(void)
6180 {
6181 int x, y;
6183 /* Initialize the curses library */
6184 if (isatty(STDIN_FILENO)) {
6185 cursed = !!initscr();
6186 opt_tty = stdin;
6187 } else {
6188 /* Leave stdin and stdout alone when acting as a pager. */
6189 opt_tty = fopen("/dev/tty", "r+");
6190 if (!opt_tty)
6191 die("Failed to open /dev/tty");
6192 cursed = !!newterm(NULL, opt_tty, opt_tty);
6193 }
6195 if (!cursed)
6196 die("Failed to initialize curses");
6198 nonl(); /* Tell curses not to do NL->CR/NL on output */
6199 cbreak(); /* Take input chars one at a time, no wait for \n */
6200 noecho(); /* Don't echo input */
6201 leaveok(stdscr, TRUE);
6203 if (has_colors())
6204 init_colors();
6206 getmaxyx(stdscr, y, x);
6207 status_win = newwin(1, 0, y - 1, 0);
6208 if (!status_win)
6209 die("Failed to create status window");
6211 /* Enable keyboard mapping */
6212 keypad(status_win, TRUE);
6213 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6215 TABSIZE = opt_tab_size;
6216 if (opt_line_graphics) {
6217 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
6218 }
6219 }
6221 static int
6222 get_input(bool prompting)
6223 {
6224 struct view *view;
6225 int i, key;
6227 if (prompting)
6228 input_mode = TRUE;
6230 while (true) {
6231 foreach_view (view, i)
6232 update_view(view);
6234 /* Refresh, accept single keystroke of input */
6235 key = wgetch(status_win);
6237 /* wgetch() with nodelay() enabled returns ERR when
6238 * there's no input. */
6239 if (key == ERR) {
6240 doupdate();
6242 } else if (key == KEY_RESIZE) {
6243 int height, width;
6245 getmaxyx(stdscr, height, width);
6247 /* Resize the status view first so the cursor is
6248 * placed properly. */
6249 wresize(status_win, 1, width);
6250 mvwin(status_win, height - 1, 0);
6251 wrefresh(status_win);
6252 resize_display();
6253 redraw_display(TRUE);
6255 } else {
6256 input_mode = FALSE;
6257 return key;
6258 }
6259 }
6260 }
6262 static char *
6263 prompt_input(const char *prompt, input_handler handler, void *data)
6264 {
6265 enum input_status status = INPUT_OK;
6266 static char buf[SIZEOF_STR];
6267 size_t pos = 0;
6269 buf[pos] = 0;
6271 while (status == INPUT_OK || status == INPUT_SKIP) {
6272 int key;
6274 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6275 wclrtoeol(status_win);
6277 key = get_input(TRUE);
6278 switch (key) {
6279 case KEY_RETURN:
6280 case KEY_ENTER:
6281 case '\n':
6282 status = pos ? INPUT_STOP : INPUT_CANCEL;
6283 break;
6285 case KEY_BACKSPACE:
6286 if (pos > 0)
6287 buf[--pos] = 0;
6288 else
6289 status = INPUT_CANCEL;
6290 break;
6292 case KEY_ESC:
6293 status = INPUT_CANCEL;
6294 break;
6296 default:
6297 if (pos >= sizeof(buf)) {
6298 report("Input string too long");
6299 return NULL;
6300 }
6302 status = handler(data, buf, key);
6303 if (status == INPUT_OK)
6304 buf[pos++] = (char) key;
6305 }
6306 }
6308 /* Clear the status window */
6309 status_empty = FALSE;
6310 report("");
6312 if (status == INPUT_CANCEL)
6313 return NULL;
6315 buf[pos++] = 0;
6317 return buf;
6318 }
6320 static enum input_status
6321 prompt_yesno_handler(void *data, char *buf, int c)
6322 {
6323 if (c == 'y' || c == 'Y')
6324 return INPUT_STOP;
6325 if (c == 'n' || c == 'N')
6326 return INPUT_CANCEL;
6327 return INPUT_SKIP;
6328 }
6330 static bool
6331 prompt_yesno(const char *prompt)
6332 {
6333 char prompt2[SIZEOF_STR];
6335 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6336 return FALSE;
6338 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6339 }
6341 static enum input_status
6342 read_prompt_handler(void *data, char *buf, int c)
6343 {
6344 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6345 }
6347 static char *
6348 read_prompt(const char *prompt)
6349 {
6350 return prompt_input(prompt, read_prompt_handler, NULL);
6351 }
6353 /*
6354 * Repository properties
6355 */
6357 static int
6358 git_properties(const char **argv, const char *separators,
6359 int (*read_property)(char *, size_t, char *, size_t))
6360 {
6361 struct io io = {};
6363 if (init_io_rd(&io, argv, NULL, FORMAT_NONE))
6364 return read_properties(&io, separators, read_property);
6365 return ERR;
6366 }
6368 static struct ref *refs = NULL;
6369 static size_t refs_alloc = 0;
6370 static size_t refs_size = 0;
6372 /* Id <-> ref store */
6373 static struct ref ***id_refs = NULL;
6374 static size_t id_refs_alloc = 0;
6375 static size_t id_refs_size = 0;
6377 static int
6378 compare_refs(const void *ref1_, const void *ref2_)
6379 {
6380 const struct ref *ref1 = *(const struct ref **)ref1_;
6381 const struct ref *ref2 = *(const struct ref **)ref2_;
6383 if (ref1->tag != ref2->tag)
6384 return ref2->tag - ref1->tag;
6385 if (ref1->ltag != ref2->ltag)
6386 return ref2->ltag - ref2->ltag;
6387 if (ref1->head != ref2->head)
6388 return ref2->head - ref1->head;
6389 if (ref1->tracked != ref2->tracked)
6390 return ref2->tracked - ref1->tracked;
6391 if (ref1->remote != ref2->remote)
6392 return ref2->remote - ref1->remote;
6393 return strcmp(ref1->name, ref2->name);
6394 }
6396 static struct ref **
6397 get_refs(const char *id)
6398 {
6399 struct ref ***tmp_id_refs;
6400 struct ref **ref_list = NULL;
6401 size_t ref_list_alloc = 0;
6402 size_t ref_list_size = 0;
6403 size_t i;
6405 for (i = 0; i < id_refs_size; i++)
6406 if (!strcmp(id, id_refs[i][0]->id))
6407 return id_refs[i];
6409 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6410 sizeof(*id_refs));
6411 if (!tmp_id_refs)
6412 return NULL;
6414 id_refs = tmp_id_refs;
6416 for (i = 0; i < refs_size; i++) {
6417 struct ref **tmp;
6419 if (strcmp(id, refs[i].id))
6420 continue;
6422 tmp = realloc_items(ref_list, &ref_list_alloc,
6423 ref_list_size + 1, sizeof(*ref_list));
6424 if (!tmp) {
6425 if (ref_list)
6426 free(ref_list);
6427 return NULL;
6428 }
6430 ref_list = tmp;
6431 ref_list[ref_list_size] = &refs[i];
6432 /* XXX: The properties of the commit chains ensures that we can
6433 * safely modify the shared ref. The repo references will
6434 * always be similar for the same id. */
6435 ref_list[ref_list_size]->next = 1;
6437 ref_list_size++;
6438 }
6440 if (ref_list) {
6441 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6442 ref_list[ref_list_size - 1]->next = 0;
6443 id_refs[id_refs_size++] = ref_list;
6444 }
6446 return ref_list;
6447 }
6449 static int
6450 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6451 {
6452 struct ref *ref;
6453 bool tag = FALSE;
6454 bool ltag = FALSE;
6455 bool remote = FALSE;
6456 bool tracked = FALSE;
6457 bool check_replace = FALSE;
6458 bool head = FALSE;
6460 if (!prefixcmp(name, "refs/tags/")) {
6461 if (!suffixcmp(name, namelen, "^{}")) {
6462 namelen -= 3;
6463 name[namelen] = 0;
6464 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6465 check_replace = TRUE;
6466 } else {
6467 ltag = TRUE;
6468 }
6470 tag = TRUE;
6471 namelen -= STRING_SIZE("refs/tags/");
6472 name += STRING_SIZE("refs/tags/");
6474 } else if (!prefixcmp(name, "refs/remotes/")) {
6475 remote = TRUE;
6476 namelen -= STRING_SIZE("refs/remotes/");
6477 name += STRING_SIZE("refs/remotes/");
6478 tracked = !strcmp(opt_remote, name);
6480 } else if (!prefixcmp(name, "refs/heads/")) {
6481 namelen -= STRING_SIZE("refs/heads/");
6482 name += STRING_SIZE("refs/heads/");
6483 head = !strncmp(opt_head, name, namelen);
6485 } else if (!strcmp(name, "HEAD")) {
6486 string_ncopy(opt_head_rev, id, idlen);
6487 return OK;
6488 }
6490 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6491 /* it's an annotated tag, replace the previous sha1 with the
6492 * resolved commit id; relies on the fact git-ls-remote lists
6493 * the commit id of an annotated tag right before the commit id
6494 * it points to. */
6495 refs[refs_size - 1].ltag = ltag;
6496 string_copy_rev(refs[refs_size - 1].id, id);
6498 return OK;
6499 }
6500 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6501 if (!refs)
6502 return ERR;
6504 ref = &refs[refs_size++];
6505 ref->name = malloc(namelen + 1);
6506 if (!ref->name)
6507 return ERR;
6509 strncpy(ref->name, name, namelen);
6510 ref->name[namelen] = 0;
6511 ref->head = head;
6512 ref->tag = tag;
6513 ref->ltag = ltag;
6514 ref->remote = remote;
6515 ref->tracked = tracked;
6516 string_copy_rev(ref->id, id);
6518 return OK;
6519 }
6521 static int
6522 load_refs(void)
6523 {
6524 static const char *ls_remote_argv[SIZEOF_ARG] = {
6525 "git", "ls-remote", ".", NULL
6526 };
6527 static bool init = FALSE;
6529 if (!init) {
6530 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6531 init = TRUE;
6532 }
6534 if (!*opt_git_dir)
6535 return OK;
6537 while (refs_size > 0)
6538 free(refs[--refs_size].name);
6539 while (id_refs_size > 0)
6540 free(id_refs[--id_refs_size]);
6542 return git_properties(ls_remote_argv, "\t", read_ref);
6543 }
6545 static int
6546 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6547 {
6548 if (!strcmp(name, "i18n.commitencoding"))
6549 string_ncopy(opt_encoding, value, valuelen);
6551 if (!strcmp(name, "core.editor"))
6552 string_ncopy(opt_editor, value, valuelen);
6554 /* branch.<head>.remote */
6555 if (*opt_head &&
6556 !strncmp(name, "branch.", 7) &&
6557 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6558 !strcmp(name + 7 + strlen(opt_head), ".remote"))
6559 string_ncopy(opt_remote, value, valuelen);
6561 if (*opt_head && *opt_remote &&
6562 !strncmp(name, "branch.", 7) &&
6563 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6564 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
6565 size_t from = strlen(opt_remote);
6567 if (!prefixcmp(value, "refs/heads/")) {
6568 value += STRING_SIZE("refs/heads/");
6569 valuelen -= STRING_SIZE("refs/heads/");
6570 }
6572 if (!string_format_from(opt_remote, &from, "/%s", value))
6573 opt_remote[0] = 0;
6574 }
6576 return OK;
6577 }
6579 static int
6580 load_git_config(void)
6581 {
6582 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6584 return git_properties(config_list_argv, "=", read_repo_config_option);
6585 }
6587 static int
6588 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6589 {
6590 if (!opt_git_dir[0]) {
6591 string_ncopy(opt_git_dir, name, namelen);
6593 } else if (opt_is_inside_work_tree == -1) {
6594 /* This can be 3 different values depending on the
6595 * version of git being used. If git-rev-parse does not
6596 * understand --is-inside-work-tree it will simply echo
6597 * the option else either "true" or "false" is printed.
6598 * Default to true for the unknown case. */
6599 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6601 } else if (*name == '.') {
6602 string_ncopy(opt_cdup, name, namelen);
6604 } else {
6605 string_ncopy(opt_prefix, name, namelen);
6606 }
6608 return OK;
6609 }
6611 static int
6612 load_repo_info(void)
6613 {
6614 const char *head_argv[] = {
6615 "git", "symbolic-ref", "HEAD", NULL
6616 };
6617 const char *rev_parse_argv[] = {
6618 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6619 "--show-cdup", "--show-prefix", NULL
6620 };
6622 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6623 chomp_string(opt_head);
6624 if (!prefixcmp(opt_head, "refs/heads/")) {
6625 char *offset = opt_head + STRING_SIZE("refs/heads/");
6627 memmove(opt_head, offset, strlen(offset) + 1);
6628 }
6629 }
6631 return git_properties(rev_parse_argv, "=", read_repo_info);
6632 }
6634 static int
6635 read_properties(struct io *io, const char *separators,
6636 int (*read_property)(char *, size_t, char *, size_t))
6637 {
6638 char *name;
6639 int state = OK;
6641 if (!start_io(io))
6642 return ERR;
6644 while (state == OK && (name = io_get(io, '\n', TRUE))) {
6645 char *value;
6646 size_t namelen;
6647 size_t valuelen;
6649 name = chomp_string(name);
6650 namelen = strcspn(name, separators);
6652 if (name[namelen]) {
6653 name[namelen] = 0;
6654 value = chomp_string(name + namelen + 1);
6655 valuelen = strlen(value);
6657 } else {
6658 value = "";
6659 valuelen = 0;
6660 }
6662 state = read_property(name, namelen, value, valuelen);
6663 }
6665 if (state != ERR && io_error(io))
6666 state = ERR;
6667 done_io(io);
6669 return state;
6670 }
6673 /*
6674 * Main
6675 */
6677 static void __NORETURN
6678 quit(int sig)
6679 {
6680 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6681 if (cursed)
6682 endwin();
6683 exit(0);
6684 }
6686 static void __NORETURN
6687 die(const char *err, ...)
6688 {
6689 va_list args;
6691 endwin();
6693 va_start(args, err);
6694 fputs("tig: ", stderr);
6695 vfprintf(stderr, err, args);
6696 fputs("\n", stderr);
6697 va_end(args);
6699 exit(1);
6700 }
6702 static void
6703 warn(const char *msg, ...)
6704 {
6705 va_list args;
6707 va_start(args, msg);
6708 fputs("tig warning: ", stderr);
6709 vfprintf(stderr, msg, args);
6710 fputs("\n", stderr);
6711 va_end(args);
6712 }
6714 int
6715 main(int argc, const char *argv[])
6716 {
6717 const char **run_argv = NULL;
6718 struct view *view;
6719 enum request request;
6720 size_t i;
6722 signal(SIGINT, quit);
6724 if (setlocale(LC_ALL, "")) {
6725 char *codeset = nl_langinfo(CODESET);
6727 string_ncopy(opt_codeset, codeset, strlen(codeset));
6728 }
6730 if (load_repo_info() == ERR)
6731 die("Failed to load repo info.");
6733 if (load_options() == ERR)
6734 die("Failed to load user config.");
6736 if (load_git_config() == ERR)
6737 die("Failed to load repo config.");
6739 request = parse_options(argc, argv, &run_argv);
6740 if (request == REQ_NONE)
6741 return 0;
6743 /* Require a git repository unless when running in pager mode. */
6744 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6745 die("Not a git repository");
6747 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6748 opt_utf8 = FALSE;
6750 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6751 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6752 if (opt_iconv == ICONV_NONE)
6753 die("Failed to initialize character set conversion");
6754 }
6756 if (load_refs() == ERR)
6757 die("Failed to load refs.");
6759 foreach_view (view, i)
6760 argv_from_env(view->ops->argv, view->cmd_env);
6762 init_display();
6764 if (request == REQ_VIEW_PAGER || run_argv) {
6765 if (request == REQ_VIEW_PAGER)
6766 io_open(&VIEW(request)->io, "");
6767 else if (!prepare_update(VIEW(request), run_argv, NULL, FORMAT_NONE))
6768 die("Failed to format arguments");
6769 open_view(NULL, request, OPEN_PREPARED);
6770 request = REQ_NONE;
6771 }
6773 while (view_driver(display[current_view], request)) {
6774 int key = get_input(FALSE);
6776 view = display[current_view];
6777 request = get_keybinding(view->keymap, key);
6779 /* Some low-level request handling. This keeps access to
6780 * status_win restricted. */
6781 switch (request) {
6782 case REQ_PROMPT:
6783 {
6784 char *cmd = read_prompt(":");
6786 if (cmd) {
6787 struct view *next = VIEW(REQ_VIEW_PAGER);
6788 const char *argv[SIZEOF_ARG] = { "git" };
6789 int argc = 1;
6791 /* When running random commands, initially show the
6792 * command in the title. However, it maybe later be
6793 * overwritten if a commit line is selected. */
6794 string_ncopy(next->ref, cmd, strlen(cmd));
6796 if (!argv_from_string(argv, &argc, cmd)) {
6797 report("Too many arguments");
6798 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
6799 report("Failed to format command");
6800 } else {
6801 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6802 }
6803 }
6805 request = REQ_NONE;
6806 break;
6807 }
6808 case REQ_SEARCH:
6809 case REQ_SEARCH_BACK:
6810 {
6811 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6812 char *search = read_prompt(prompt);
6814 if (search)
6815 string_ncopy(opt_search, search, strlen(search));
6816 else
6817 request = REQ_NONE;
6818 break;
6819 }
6820 default:
6821 break;
6822 }
6823 }
6825 quit(0);
6827 return 0;
6828 }