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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 int load_refs(void);
72 static size_t utf8_length(const char **string, size_t col, int *width, size_t max_width, int *trimmed, bool reserve);
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 #define S_ISGITLINK(mode) (((mode) & S_IFMT) == 0160000)
121 #ifndef GIT_CONFIG
122 #define GIT_CONFIG "config"
123 #endif
125 /* Some ASCII-shorthands fitted into the ncurses namespace. */
126 #define KEY_TAB '\t'
127 #define KEY_RETURN '\r'
128 #define KEY_ESC 27
131 struct ref {
132 char *name; /* Ref name; tag or head names are shortened. */
133 char id[SIZEOF_REV]; /* Commit SHA1 ID */
134 unsigned int head:1; /* Is it the current HEAD? */
135 unsigned int tag:1; /* Is it a tag? */
136 unsigned int ltag:1; /* If so, is the tag local? */
137 unsigned int remote:1; /* Is it a remote ref? */
138 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
139 unsigned int next:1; /* For ref lists: are there more refs? */
140 };
142 static struct ref **get_refs(const char *id);
144 enum format_flags {
145 FORMAT_ALL, /* Perform replacement in all arguments. */
146 FORMAT_DASH, /* Perform replacement up until "--". */
147 FORMAT_NONE /* No replacement should be performed. */
148 };
150 static bool format_argv(const char *dst[], const char *src[], enum format_flags flags);
152 enum input_status {
153 INPUT_OK,
154 INPUT_SKIP,
155 INPUT_STOP,
156 INPUT_CANCEL
157 };
159 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
161 static char *prompt_input(const char *prompt, input_handler handler, void *data);
162 static bool prompt_yesno(const char *prompt);
164 /*
165 * Allocation helpers ... Entering macro hell to never be seen again.
166 */
168 #define DEFINE_ALLOCATOR(name, type, chunk_size) \
169 static type * \
170 name(type **mem, size_t size, size_t increase) \
171 { \
172 size_t num_chunks = (size + chunk_size - 1) / chunk_size; \
173 size_t num_chunks_new = (size + increase + chunk_size - 1) / chunk_size;\
174 type *tmp = *mem; \
175 \
176 if (mem == NULL || num_chunks != num_chunks_new) { \
177 tmp = realloc(tmp, num_chunks_new * chunk_size * sizeof(type)); \
178 if (tmp) \
179 *mem = tmp; \
180 } \
181 \
182 return tmp; \
183 }
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 void
214 string_expand(char *dst, size_t dstlen, const char *src, int tabsize)
215 {
216 size_t size, pos;
218 for (size = pos = 0; size < dstlen - 1 && src[pos]; pos++) {
219 if (src[pos] == '\t') {
220 size_t expanded = tabsize - (size % tabsize);
222 if (expanded + size >= dstlen - 1)
223 expanded = dstlen - size - 1;
224 memcpy(dst + size, " ", expanded);
225 size += expanded;
226 } else {
227 dst[size++] = src[pos];
228 }
229 }
231 dst[size] = 0;
232 }
234 static char *
235 chomp_string(char *name)
236 {
237 int namelen;
239 while (isspace(*name))
240 name++;
242 namelen = strlen(name) - 1;
243 while (namelen > 0 && isspace(name[namelen]))
244 name[namelen--] = 0;
246 return name;
247 }
249 static bool
250 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
251 {
252 va_list args;
253 size_t pos = bufpos ? *bufpos : 0;
255 va_start(args, fmt);
256 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
257 va_end(args);
259 if (bufpos)
260 *bufpos = pos;
262 return pos >= bufsize ? FALSE : TRUE;
263 }
265 #define string_format(buf, fmt, args...) \
266 string_nformat(buf, sizeof(buf), NULL, fmt, args)
268 #define string_format_from(buf, from, fmt, args...) \
269 string_nformat(buf, sizeof(buf), from, fmt, args)
271 static int
272 string_enum_compare(const char *str1, const char *str2, int len)
273 {
274 size_t i;
276 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
278 /* Diff-Header == DIFF_HEADER */
279 for (i = 0; i < len; i++) {
280 if (toupper(str1[i]) == toupper(str2[i]))
281 continue;
283 if (string_enum_sep(str1[i]) &&
284 string_enum_sep(str2[i]))
285 continue;
287 return str1[i] - str2[i];
288 }
290 return 0;
291 }
293 struct enum_map {
294 const char *name;
295 int namelen;
296 int value;
297 };
299 #define ENUM_MAP(name, value) { name, STRING_SIZE(name), value }
301 static bool
302 map_enum_do(const struct enum_map *map, size_t map_size, int *value, const char *name)
303 {
304 size_t namelen = strlen(name);
305 int i;
307 for (i = 0; i < map_size; i++)
308 if (namelen == map[i].namelen &&
309 !string_enum_compare(name, map[i].name, namelen)) {
310 *value = map[i].value;
311 return TRUE;
312 }
314 return FALSE;
315 }
317 #define map_enum(attr, map, name) \
318 map_enum_do(map, ARRAY_SIZE(map), attr, name)
320 #define prefixcmp(str1, str2) \
321 strncmp(str1, str2, STRING_SIZE(str2))
323 static inline int
324 suffixcmp(const char *str, int slen, const char *suffix)
325 {
326 size_t len = slen >= 0 ? slen : strlen(str);
327 size_t suffixlen = strlen(suffix);
329 return suffixlen < len ? strcmp(str + len - suffixlen, suffix) : -1;
330 }
333 static const char *
334 mkdate(const time_t *time)
335 {
336 static char buf[DATE_COLS + 1];
337 struct tm tm;
339 gmtime_r(time, &tm);
340 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
341 }
344 static bool
345 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
346 {
347 int valuelen;
349 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
350 bool advance = cmd[valuelen] != 0;
352 cmd[valuelen] = 0;
353 argv[(*argc)++] = chomp_string(cmd);
354 cmd = chomp_string(cmd + valuelen + advance);
355 }
357 if (*argc < SIZEOF_ARG)
358 argv[*argc] = NULL;
359 return *argc < SIZEOF_ARG;
360 }
362 static void
363 argv_from_env(const char **argv, const char *name)
364 {
365 char *env = argv ? getenv(name) : NULL;
366 int argc = 0;
368 if (env && *env)
369 env = strdup(env);
370 if (env && !argv_from_string(argv, &argc, env))
371 die("Too many arguments in the `%s` environment variable", name);
372 }
375 /*
376 * Executing external commands.
377 */
379 enum io_type {
380 IO_FD, /* File descriptor based IO. */
381 IO_BG, /* Execute command in the background. */
382 IO_FG, /* Execute command with same std{in,out,err}. */
383 IO_RD, /* Read only fork+exec IO. */
384 IO_WR, /* Write only fork+exec IO. */
385 IO_AP, /* Append fork+exec output to file. */
386 };
388 struct io {
389 enum io_type type; /* The requested type of pipe. */
390 const char *dir; /* Directory from which to execute. */
391 pid_t pid; /* Pipe for reading or writing. */
392 int pipe; /* Pipe end for reading or writing. */
393 int error; /* Error status. */
394 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
395 char *buf; /* Read buffer. */
396 size_t bufalloc; /* Allocated buffer size. */
397 size_t bufsize; /* Buffer content size. */
398 char *bufpos; /* Current buffer position. */
399 unsigned int eof:1; /* Has end of file been reached. */
400 };
402 static void
403 reset_io(struct io *io)
404 {
405 io->pipe = -1;
406 io->pid = 0;
407 io->buf = io->bufpos = NULL;
408 io->bufalloc = io->bufsize = 0;
409 io->error = 0;
410 io->eof = 0;
411 }
413 static void
414 init_io(struct io *io, const char *dir, enum io_type type)
415 {
416 reset_io(io);
417 io->type = type;
418 io->dir = dir;
419 }
421 static bool
422 init_io_rd(struct io *io, const char *argv[], const char *dir,
423 enum format_flags flags)
424 {
425 init_io(io, dir, IO_RD);
426 return format_argv(io->argv, argv, flags);
427 }
429 static bool
430 io_open(struct io *io, const char *name)
431 {
432 init_io(io, NULL, IO_FD);
433 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
434 if (io->pipe == -1)
435 io->error = errno;
436 return io->pipe != -1;
437 }
439 static bool
440 kill_io(struct io *io)
441 {
442 return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
443 }
445 static bool
446 done_io(struct io *io)
447 {
448 pid_t pid = io->pid;
450 if (io->pipe != -1)
451 close(io->pipe);
452 free(io->buf);
453 reset_io(io);
455 while (pid > 0) {
456 int status;
457 pid_t waiting = waitpid(pid, &status, 0);
459 if (waiting < 0) {
460 if (errno == EINTR)
461 continue;
462 report("waitpid failed (%s)", strerror(errno));
463 return FALSE;
464 }
466 return waiting == pid &&
467 !WIFSIGNALED(status) &&
468 WIFEXITED(status) &&
469 !WEXITSTATUS(status);
470 }
472 return TRUE;
473 }
475 static bool
476 start_io(struct io *io)
477 {
478 int pipefds[2] = { -1, -1 };
480 if (io->type == IO_FD)
481 return TRUE;
483 if ((io->type == IO_RD || io->type == IO_WR) &&
484 pipe(pipefds) < 0)
485 return FALSE;
486 else if (io->type == IO_AP)
487 pipefds[1] = io->pipe;
489 if ((io->pid = fork())) {
490 if (pipefds[!(io->type == IO_WR)] != -1)
491 close(pipefds[!(io->type == IO_WR)]);
492 if (io->pid != -1) {
493 io->pipe = pipefds[!!(io->type == IO_WR)];
494 return TRUE;
495 }
497 } else {
498 if (io->type != IO_FG) {
499 int devnull = open("/dev/null", O_RDWR);
500 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
501 int writefd = (io->type == IO_RD || io->type == IO_AP)
502 ? pipefds[1] : devnull;
504 dup2(readfd, STDIN_FILENO);
505 dup2(writefd, STDOUT_FILENO);
506 dup2(devnull, STDERR_FILENO);
508 close(devnull);
509 if (pipefds[0] != -1)
510 close(pipefds[0]);
511 if (pipefds[1] != -1)
512 close(pipefds[1]);
513 }
515 if (io->dir && *io->dir && chdir(io->dir) == -1)
516 die("Failed to change directory: %s", strerror(errno));
518 execvp(io->argv[0], (char *const*) io->argv);
519 die("Failed to execute program: %s", strerror(errno));
520 }
522 if (pipefds[!!(io->type == IO_WR)] != -1)
523 close(pipefds[!!(io->type == IO_WR)]);
524 return FALSE;
525 }
527 static bool
528 run_io(struct io *io, const char **argv, const char *dir, enum io_type type)
529 {
530 init_io(io, dir, type);
531 if (!format_argv(io->argv, argv, FORMAT_NONE))
532 return FALSE;
533 return start_io(io);
534 }
536 static int
537 run_io_do(struct io *io)
538 {
539 return start_io(io) && done_io(io);
540 }
542 static int
543 run_io_bg(const char **argv)
544 {
545 struct io io = {};
547 init_io(&io, NULL, IO_BG);
548 if (!format_argv(io.argv, argv, FORMAT_NONE))
549 return FALSE;
550 return run_io_do(&io);
551 }
553 static bool
554 run_io_fg(const char **argv, const char *dir)
555 {
556 struct io io = {};
558 init_io(&io, dir, IO_FG);
559 if (!format_argv(io.argv, argv, FORMAT_NONE))
560 return FALSE;
561 return run_io_do(&io);
562 }
564 static bool
565 run_io_append(const char **argv, enum format_flags flags, int fd)
566 {
567 struct io io = {};
569 init_io(&io, NULL, IO_AP);
570 io.pipe = fd;
571 if (format_argv(io.argv, argv, flags))
572 return run_io_do(&io);
573 close(fd);
574 return FALSE;
575 }
577 static bool
578 run_io_rd(struct io *io, const char **argv, enum format_flags flags)
579 {
580 return init_io_rd(io, argv, NULL, flags) && start_io(io);
581 }
583 static bool
584 io_eof(struct io *io)
585 {
586 return io->eof;
587 }
589 static int
590 io_error(struct io *io)
591 {
592 return io->error;
593 }
595 static char *
596 io_strerror(struct io *io)
597 {
598 return strerror(io->error);
599 }
601 static bool
602 io_can_read(struct io *io)
603 {
604 struct timeval tv = { 0, 500 };
605 fd_set fds;
607 FD_ZERO(&fds);
608 FD_SET(io->pipe, &fds);
610 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
611 }
613 static ssize_t
614 io_read(struct io *io, void *buf, size_t bufsize)
615 {
616 do {
617 ssize_t readsize = read(io->pipe, buf, bufsize);
619 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
620 continue;
621 else if (readsize == -1)
622 io->error = errno;
623 else if (readsize == 0)
624 io->eof = 1;
625 return readsize;
626 } while (1);
627 }
629 DEFINE_ALLOCATOR(realloc_io_buf, char, BUFSIZ)
631 static char *
632 io_get(struct io *io, int c, bool can_read)
633 {
634 char *eol;
635 ssize_t readsize;
637 while (TRUE) {
638 if (io->bufsize > 0) {
639 eol = memchr(io->bufpos, c, io->bufsize);
640 if (eol) {
641 char *line = io->bufpos;
643 *eol = 0;
644 io->bufpos = eol + 1;
645 io->bufsize -= io->bufpos - line;
646 return line;
647 }
648 }
650 if (io_eof(io)) {
651 if (io->bufsize) {
652 io->bufpos[io->bufsize] = 0;
653 io->bufsize = 0;
654 return io->bufpos;
655 }
656 return NULL;
657 }
659 if (!can_read)
660 return NULL;
662 if (io->bufsize > 0 && io->bufpos > io->buf)
663 memmove(io->buf, io->bufpos, io->bufsize);
665 if (io->bufalloc == io->bufsize) {
666 if (!realloc_io_buf(&io->buf, io->bufalloc, BUFSIZ))
667 return NULL;
668 io->bufalloc += BUFSIZ;
669 }
671 io->bufpos = io->buf;
672 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
673 if (io_error(io))
674 return NULL;
675 io->bufsize += readsize;
676 }
677 }
679 static bool
680 io_write(struct io *io, const void *buf, size_t bufsize)
681 {
682 size_t written = 0;
684 while (!io_error(io) && written < bufsize) {
685 ssize_t size;
687 size = write(io->pipe, buf + written, bufsize - written);
688 if (size < 0 && (errno == EAGAIN || errno == EINTR))
689 continue;
690 else if (size == -1)
691 io->error = errno;
692 else
693 written += size;
694 }
696 return written == bufsize;
697 }
699 static bool
700 io_read_buf(struct io *io, char buf[], size_t bufsize)
701 {
702 char *result = io_get(io, '\n', TRUE);
704 if (result) {
705 result = chomp_string(result);
706 string_ncopy_do(buf, bufsize, result, strlen(result));
707 }
709 return done_io(io) && result;
710 }
712 static bool
713 run_io_buf(const char **argv, char buf[], size_t bufsize)
714 {
715 struct io io = {};
717 return run_io_rd(&io, argv, FORMAT_NONE) && io_read_buf(&io, buf, bufsize);
718 }
720 static int
721 io_load(struct io *io, const char *separators,
722 int (*read_property)(char *, size_t, char *, size_t))
723 {
724 char *name;
725 int state = OK;
727 if (!start_io(io))
728 return ERR;
730 while (state == OK && (name = io_get(io, '\n', TRUE))) {
731 char *value;
732 size_t namelen;
733 size_t valuelen;
735 name = chomp_string(name);
736 namelen = strcspn(name, separators);
738 if (name[namelen]) {
739 name[namelen] = 0;
740 value = chomp_string(name + namelen + 1);
741 valuelen = strlen(value);
743 } else {
744 value = "";
745 valuelen = 0;
746 }
748 state = read_property(name, namelen, value, valuelen);
749 }
751 if (state != ERR && io_error(io))
752 state = ERR;
753 done_io(io);
755 return state;
756 }
758 static int
759 run_io_load(const char **argv, const char *separators,
760 int (*read_property)(char *, size_t, char *, size_t))
761 {
762 struct io io = {};
764 return init_io_rd(&io, argv, NULL, FORMAT_NONE)
765 ? io_load(&io, separators, read_property) : ERR;
766 }
769 /*
770 * User requests
771 */
773 #define REQ_INFO \
774 /* XXX: Keep the view request first and in sync with views[]. */ \
775 REQ_GROUP("View switching") \
776 REQ_(VIEW_MAIN, "Show main view"), \
777 REQ_(VIEW_DIFF, "Show diff view"), \
778 REQ_(VIEW_LOG, "Show log view"), \
779 REQ_(VIEW_TREE, "Show tree view"), \
780 REQ_(VIEW_BLOB, "Show blob view"), \
781 REQ_(VIEW_BLAME, "Show blame view"), \
782 REQ_(VIEW_HELP, "Show help page"), \
783 REQ_(VIEW_PAGER, "Show pager view"), \
784 REQ_(VIEW_STATUS, "Show status view"), \
785 REQ_(VIEW_STAGE, "Show stage view"), \
786 \
787 REQ_GROUP("View manipulation") \
788 REQ_(ENTER, "Enter current line and scroll"), \
789 REQ_(NEXT, "Move to next"), \
790 REQ_(PREVIOUS, "Move to previous"), \
791 REQ_(PARENT, "Move to parent"), \
792 REQ_(VIEW_NEXT, "Move focus to next view"), \
793 REQ_(REFRESH, "Reload and refresh"), \
794 REQ_(MAXIMIZE, "Maximize the current view"), \
795 REQ_(VIEW_CLOSE, "Close the current view"), \
796 REQ_(QUIT, "Close all views and quit"), \
797 \
798 REQ_GROUP("View specific requests") \
799 REQ_(STATUS_UPDATE, "Update file status"), \
800 REQ_(STATUS_REVERT, "Revert file changes"), \
801 REQ_(STATUS_MERGE, "Merge file using external tool"), \
802 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
803 \
804 REQ_GROUP("Cursor navigation") \
805 REQ_(MOVE_UP, "Move cursor one line up"), \
806 REQ_(MOVE_DOWN, "Move cursor one line down"), \
807 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
808 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
809 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
810 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
811 \
812 REQ_GROUP("Scrolling") \
813 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
814 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
815 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
816 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
817 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
818 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
819 \
820 REQ_GROUP("Searching") \
821 REQ_(SEARCH, "Search the view"), \
822 REQ_(SEARCH_BACK, "Search backwards in the view"), \
823 REQ_(FIND_NEXT, "Find next search match"), \
824 REQ_(FIND_PREV, "Find previous search match"), \
825 \
826 REQ_GROUP("Option manipulation") \
827 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
828 REQ_(TOGGLE_DATE, "Toggle date display"), \
829 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
830 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
831 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
832 \
833 REQ_GROUP("Misc") \
834 REQ_(PROMPT, "Bring up the prompt"), \
835 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
836 REQ_(SHOW_VERSION, "Show version information"), \
837 REQ_(STOP_LOADING, "Stop all loading views"), \
838 REQ_(EDIT, "Open in editor"), \
839 REQ_(NONE, "Do nothing")
842 /* User action requests. */
843 enum request {
844 #define REQ_GROUP(help)
845 #define REQ_(req, help) REQ_##req
847 /* Offset all requests to avoid conflicts with ncurses getch values. */
848 REQ_OFFSET = KEY_MAX + 1,
849 REQ_INFO
851 #undef REQ_GROUP
852 #undef REQ_
853 };
855 struct request_info {
856 enum request request;
857 const char *name;
858 int namelen;
859 const char *help;
860 };
862 static const struct request_info req_info[] = {
863 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
864 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
865 REQ_INFO
866 #undef REQ_GROUP
867 #undef REQ_
868 };
870 static enum request
871 get_request(const char *name)
872 {
873 int namelen = strlen(name);
874 int i;
876 for (i = 0; i < ARRAY_SIZE(req_info); i++)
877 if (req_info[i].namelen == namelen &&
878 !string_enum_compare(req_info[i].name, name, namelen))
879 return req_info[i].request;
881 return REQ_NONE;
882 }
885 /*
886 * Options
887 */
889 /* Option and state variables. */
890 static bool opt_date = TRUE;
891 static bool opt_author = TRUE;
892 static bool opt_line_number = FALSE;
893 static bool opt_line_graphics = TRUE;
894 static bool opt_rev_graph = FALSE;
895 static bool opt_show_refs = TRUE;
896 static int opt_num_interval = NUMBER_INTERVAL;
897 static double opt_hscroll = 0.50;
898 static int opt_tab_size = TAB_SIZE;
899 static int opt_author_cols = AUTHOR_COLS-1;
900 static char opt_path[SIZEOF_STR] = "";
901 static char opt_file[SIZEOF_STR] = "";
902 static char opt_ref[SIZEOF_REF] = "";
903 static char opt_head[SIZEOF_REF] = "";
904 static char opt_head_rev[SIZEOF_REV] = "";
905 static char opt_remote[SIZEOF_REF] = "";
906 static char opt_encoding[20] = "UTF-8";
907 static bool opt_utf8 = TRUE;
908 static char opt_codeset[20] = "UTF-8";
909 static iconv_t opt_iconv = ICONV_NONE;
910 static char opt_search[SIZEOF_STR] = "";
911 static char opt_cdup[SIZEOF_STR] = "";
912 static char opt_prefix[SIZEOF_STR] = "";
913 static char opt_git_dir[SIZEOF_STR] = "";
914 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
915 static char opt_editor[SIZEOF_STR] = "";
916 static FILE *opt_tty = NULL;
918 #define is_initial_commit() (!*opt_head_rev)
919 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || !strcmp(opt_head_rev, (rev)))
922 /*
923 * Line-oriented content detection.
924 */
926 #define LINE_INFO \
927 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
928 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
929 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
930 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
931 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
932 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
933 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
934 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
935 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
936 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
937 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
938 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
939 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
940 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
941 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
942 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
943 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
944 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
945 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
946 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
947 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
948 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
949 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
950 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
951 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
952 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
953 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
954 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
955 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
956 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
957 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
958 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
959 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
960 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
961 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
962 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
963 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
964 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
965 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
966 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
967 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
968 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
969 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
970 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
971 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
972 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
973 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
974 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
975 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
976 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
977 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
978 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
979 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
980 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
981 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
983 enum line_type {
984 #define LINE(type, line, fg, bg, attr) \
985 LINE_##type
986 LINE_INFO,
987 LINE_NONE
988 #undef LINE
989 };
991 struct line_info {
992 const char *name; /* Option name. */
993 int namelen; /* Size of option name. */
994 const char *line; /* The start of line to match. */
995 int linelen; /* Size of string to match. */
996 int fg, bg, attr; /* Color and text attributes for the lines. */
997 };
999 static struct line_info line_info[] = {
1000 #define LINE(type, line, fg, bg, attr) \
1001 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
1002 LINE_INFO
1003 #undef LINE
1004 };
1006 static enum line_type
1007 get_line_type(const char *line)
1008 {
1009 int linelen = strlen(line);
1010 enum line_type type;
1012 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1013 /* Case insensitive search matches Signed-off-by lines better. */
1014 if (linelen >= line_info[type].linelen &&
1015 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
1016 return type;
1018 return LINE_DEFAULT;
1019 }
1021 static inline int
1022 get_line_attr(enum line_type type)
1023 {
1024 assert(type < ARRAY_SIZE(line_info));
1025 return COLOR_PAIR(type) | line_info[type].attr;
1026 }
1028 static struct line_info *
1029 get_line_info(const char *name)
1030 {
1031 size_t namelen = strlen(name);
1032 enum line_type type;
1034 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1035 if (namelen == line_info[type].namelen &&
1036 !string_enum_compare(line_info[type].name, name, namelen))
1037 return &line_info[type];
1039 return NULL;
1040 }
1042 static void
1043 init_colors(void)
1044 {
1045 int default_bg = line_info[LINE_DEFAULT].bg;
1046 int default_fg = line_info[LINE_DEFAULT].fg;
1047 enum line_type type;
1049 start_color();
1051 if (assume_default_colors(default_fg, default_bg) == ERR) {
1052 default_bg = COLOR_BLACK;
1053 default_fg = COLOR_WHITE;
1054 }
1056 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1057 struct line_info *info = &line_info[type];
1058 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1059 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1061 init_pair(type, fg, bg);
1062 }
1063 }
1065 struct line {
1066 enum line_type type;
1068 /* State flags */
1069 unsigned int selected:1;
1070 unsigned int dirty:1;
1071 unsigned int cleareol:1;
1073 void *data; /* User data */
1074 };
1077 /*
1078 * Keys
1079 */
1081 struct keybinding {
1082 int alias;
1083 enum request request;
1084 };
1086 static const struct keybinding default_keybindings[] = {
1087 /* View switching */
1088 { 'm', REQ_VIEW_MAIN },
1089 { 'd', REQ_VIEW_DIFF },
1090 { 'l', REQ_VIEW_LOG },
1091 { 't', REQ_VIEW_TREE },
1092 { 'f', REQ_VIEW_BLOB },
1093 { 'B', REQ_VIEW_BLAME },
1094 { 'p', REQ_VIEW_PAGER },
1095 { 'h', REQ_VIEW_HELP },
1096 { 'S', REQ_VIEW_STATUS },
1097 { 'c', REQ_VIEW_STAGE },
1099 /* View manipulation */
1100 { 'q', REQ_VIEW_CLOSE },
1101 { KEY_TAB, REQ_VIEW_NEXT },
1102 { KEY_RETURN, REQ_ENTER },
1103 { KEY_UP, REQ_PREVIOUS },
1104 { KEY_DOWN, REQ_NEXT },
1105 { 'R', REQ_REFRESH },
1106 { KEY_F(5), REQ_REFRESH },
1107 { 'O', REQ_MAXIMIZE },
1109 /* Cursor navigation */
1110 { 'k', REQ_MOVE_UP },
1111 { 'j', REQ_MOVE_DOWN },
1112 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1113 { KEY_END, REQ_MOVE_LAST_LINE },
1114 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1115 { ' ', REQ_MOVE_PAGE_DOWN },
1116 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1117 { 'b', REQ_MOVE_PAGE_UP },
1118 { '-', REQ_MOVE_PAGE_UP },
1120 /* Scrolling */
1121 { KEY_LEFT, REQ_SCROLL_LEFT },
1122 { KEY_RIGHT, REQ_SCROLL_RIGHT },
1123 { KEY_IC, REQ_SCROLL_LINE_UP },
1124 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1125 { 'w', REQ_SCROLL_PAGE_UP },
1126 { 's', REQ_SCROLL_PAGE_DOWN },
1128 /* Searching */
1129 { '/', REQ_SEARCH },
1130 { '?', REQ_SEARCH_BACK },
1131 { 'n', REQ_FIND_NEXT },
1132 { 'N', REQ_FIND_PREV },
1134 /* Misc */
1135 { 'Q', REQ_QUIT },
1136 { 'z', REQ_STOP_LOADING },
1137 { 'v', REQ_SHOW_VERSION },
1138 { 'r', REQ_SCREEN_REDRAW },
1139 { '.', REQ_TOGGLE_LINENO },
1140 { 'D', REQ_TOGGLE_DATE },
1141 { 'A', REQ_TOGGLE_AUTHOR },
1142 { 'g', REQ_TOGGLE_REV_GRAPH },
1143 { 'F', REQ_TOGGLE_REFS },
1144 { ':', REQ_PROMPT },
1145 { 'u', REQ_STATUS_UPDATE },
1146 { '!', REQ_STATUS_REVERT },
1147 { 'M', REQ_STATUS_MERGE },
1148 { '@', REQ_STAGE_NEXT },
1149 { ',', REQ_PARENT },
1150 { 'e', REQ_EDIT },
1151 };
1153 #define KEYMAP_INFO \
1154 KEYMAP_(GENERIC), \
1155 KEYMAP_(MAIN), \
1156 KEYMAP_(DIFF), \
1157 KEYMAP_(LOG), \
1158 KEYMAP_(TREE), \
1159 KEYMAP_(BLOB), \
1160 KEYMAP_(BLAME), \
1161 KEYMAP_(PAGER), \
1162 KEYMAP_(HELP), \
1163 KEYMAP_(STATUS), \
1164 KEYMAP_(STAGE)
1166 enum keymap {
1167 #define KEYMAP_(name) KEYMAP_##name
1168 KEYMAP_INFO
1169 #undef KEYMAP_
1170 };
1172 static const struct enum_map keymap_table[] = {
1173 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
1174 KEYMAP_INFO
1175 #undef KEYMAP_
1176 };
1178 #define set_keymap(map, name) map_enum(map, keymap_table, name)
1180 struct keybinding_table {
1181 struct keybinding *data;
1182 size_t size;
1183 };
1185 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1187 static void
1188 add_keybinding(enum keymap keymap, enum request request, int key)
1189 {
1190 struct keybinding_table *table = &keybindings[keymap];
1192 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1193 if (!table->data)
1194 die("Failed to allocate keybinding");
1195 table->data[table->size].alias = key;
1196 table->data[table->size++].request = request;
1197 }
1199 /* Looks for a key binding first in the given map, then in the generic map, and
1200 * lastly in the default keybindings. */
1201 static enum request
1202 get_keybinding(enum keymap keymap, int key)
1203 {
1204 size_t i;
1206 for (i = 0; i < keybindings[keymap].size; i++)
1207 if (keybindings[keymap].data[i].alias == key)
1208 return keybindings[keymap].data[i].request;
1210 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1211 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1212 return keybindings[KEYMAP_GENERIC].data[i].request;
1214 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1215 if (default_keybindings[i].alias == key)
1216 return default_keybindings[i].request;
1218 return (enum request) key;
1219 }
1222 struct key {
1223 const char *name;
1224 int value;
1225 };
1227 static const struct key key_table[] = {
1228 { "Enter", KEY_RETURN },
1229 { "Space", ' ' },
1230 { "Backspace", KEY_BACKSPACE },
1231 { "Tab", KEY_TAB },
1232 { "Escape", KEY_ESC },
1233 { "Left", KEY_LEFT },
1234 { "Right", KEY_RIGHT },
1235 { "Up", KEY_UP },
1236 { "Down", KEY_DOWN },
1237 { "Insert", KEY_IC },
1238 { "Delete", KEY_DC },
1239 { "Hash", '#' },
1240 { "Home", KEY_HOME },
1241 { "End", KEY_END },
1242 { "PageUp", KEY_PPAGE },
1243 { "PageDown", KEY_NPAGE },
1244 { "F1", KEY_F(1) },
1245 { "F2", KEY_F(2) },
1246 { "F3", KEY_F(3) },
1247 { "F4", KEY_F(4) },
1248 { "F5", KEY_F(5) },
1249 { "F6", KEY_F(6) },
1250 { "F7", KEY_F(7) },
1251 { "F8", KEY_F(8) },
1252 { "F9", KEY_F(9) },
1253 { "F10", KEY_F(10) },
1254 { "F11", KEY_F(11) },
1255 { "F12", KEY_F(12) },
1256 };
1258 static int
1259 get_key_value(const char *name)
1260 {
1261 int i;
1263 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1264 if (!strcasecmp(key_table[i].name, name))
1265 return key_table[i].value;
1267 if (strlen(name) == 1 && isprint(*name))
1268 return (int) *name;
1270 return ERR;
1271 }
1273 static const char *
1274 get_key_name(int key_value)
1275 {
1276 static char key_char[] = "'X'";
1277 const char *seq = NULL;
1278 int key;
1280 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1281 if (key_table[key].value == key_value)
1282 seq = key_table[key].name;
1284 if (seq == NULL &&
1285 key_value < 127 &&
1286 isprint(key_value)) {
1287 key_char[1] = (char) key_value;
1288 seq = key_char;
1289 }
1291 return seq ? seq : "(no key)";
1292 }
1294 static const char *
1295 get_key(enum request request)
1296 {
1297 static char buf[BUFSIZ];
1298 size_t pos = 0;
1299 char *sep = "";
1300 int i;
1302 buf[pos] = 0;
1304 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1305 const struct keybinding *keybinding = &default_keybindings[i];
1307 if (keybinding->request != request)
1308 continue;
1310 if (!string_format_from(buf, &pos, "%s%s", sep,
1311 get_key_name(keybinding->alias)))
1312 return "Too many keybindings!";
1313 sep = ", ";
1314 }
1316 return buf;
1317 }
1319 struct run_request {
1320 enum keymap keymap;
1321 int key;
1322 const char *argv[SIZEOF_ARG];
1323 };
1325 static struct run_request *run_request;
1326 static size_t run_requests;
1328 DEFINE_ALLOCATOR(realloc_run_requests, struct run_request, 8)
1330 static enum request
1331 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1332 {
1333 struct run_request *req;
1335 if (argc >= ARRAY_SIZE(req->argv) - 1)
1336 return REQ_NONE;
1338 if (!realloc_run_requests(&run_request, run_requests, 1))
1339 return REQ_NONE;
1341 req = &run_request[run_requests];
1342 req->keymap = keymap;
1343 req->key = key;
1344 req->argv[0] = NULL;
1346 if (!format_argv(req->argv, argv, FORMAT_NONE))
1347 return REQ_NONE;
1349 return REQ_NONE + ++run_requests;
1350 }
1352 static struct run_request *
1353 get_run_request(enum request request)
1354 {
1355 if (request <= REQ_NONE)
1356 return NULL;
1357 return &run_request[request - REQ_NONE - 1];
1358 }
1360 static void
1361 add_builtin_run_requests(void)
1362 {
1363 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1364 const char *gc[] = { "git", "gc", NULL };
1365 struct {
1366 enum keymap keymap;
1367 int key;
1368 int argc;
1369 const char **argv;
1370 } reqs[] = {
1371 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1372 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1373 };
1374 int i;
1376 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1377 enum request req;
1379 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1380 if (req != REQ_NONE)
1381 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1382 }
1383 }
1385 /*
1386 * User config file handling.
1387 */
1389 static int config_lineno;
1390 static bool config_errors;
1391 static const char *config_msg;
1393 static const struct enum_map color_map[] = {
1394 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1395 COLOR_MAP(DEFAULT),
1396 COLOR_MAP(BLACK),
1397 COLOR_MAP(BLUE),
1398 COLOR_MAP(CYAN),
1399 COLOR_MAP(GREEN),
1400 COLOR_MAP(MAGENTA),
1401 COLOR_MAP(RED),
1402 COLOR_MAP(WHITE),
1403 COLOR_MAP(YELLOW),
1404 };
1406 static const struct enum_map attr_map[] = {
1407 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1408 ATTR_MAP(NORMAL),
1409 ATTR_MAP(BLINK),
1410 ATTR_MAP(BOLD),
1411 ATTR_MAP(DIM),
1412 ATTR_MAP(REVERSE),
1413 ATTR_MAP(STANDOUT),
1414 ATTR_MAP(UNDERLINE),
1415 };
1417 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1419 static int parse_step(double *opt, const char *arg)
1420 {
1421 *opt = atoi(arg);
1422 if (!strchr(arg, '%'))
1423 return OK;
1425 /* "Shift down" so 100% and 1 does not conflict. */
1426 *opt = (*opt - 1) / 100;
1427 if (*opt >= 1.0) {
1428 *opt = 0.99;
1429 config_msg = "Step value larger than 100%";
1430 return ERR;
1431 }
1432 if (*opt < 0.0) {
1433 *opt = 1;
1434 config_msg = "Invalid step value";
1435 return ERR;
1436 }
1437 return OK;
1438 }
1440 static int
1441 parse_int(int *opt, const char *arg, int min, int max)
1442 {
1443 int value = atoi(arg);
1445 if (min <= value && value <= max) {
1446 *opt = value;
1447 return OK;
1448 }
1450 config_msg = "Integer value out of bound";
1451 return ERR;
1452 }
1454 static bool
1455 set_color(int *color, const char *name)
1456 {
1457 if (map_enum(color, color_map, name))
1458 return TRUE;
1459 if (!prefixcmp(name, "color"))
1460 return parse_int(color, name + 5, 0, 255) == OK;
1461 return FALSE;
1462 }
1464 /* Wants: object fgcolor bgcolor [attribute] */
1465 static int
1466 option_color_command(int argc, const char *argv[])
1467 {
1468 struct line_info *info;
1470 if (argc != 3 && argc != 4) {
1471 config_msg = "Wrong number of arguments given to color command";
1472 return ERR;
1473 }
1475 info = get_line_info(argv[0]);
1476 if (!info) {
1477 static const struct enum_map obsolete[] = {
1478 ENUM_MAP("main-delim", LINE_DELIMITER),
1479 ENUM_MAP("main-date", LINE_DATE),
1480 ENUM_MAP("main-author", LINE_AUTHOR),
1481 };
1482 int index;
1484 if (!map_enum(&index, obsolete, argv[0])) {
1485 config_msg = "Unknown color name";
1486 return ERR;
1487 }
1488 info = &line_info[index];
1489 }
1491 if (!set_color(&info->fg, argv[1]) ||
1492 !set_color(&info->bg, argv[2])) {
1493 config_msg = "Unknown color";
1494 return ERR;
1495 }
1497 if (argc == 4 && !set_attribute(&info->attr, argv[3])) {
1498 config_msg = "Unknown attribute";
1499 return ERR;
1500 }
1502 return OK;
1503 }
1505 static int parse_bool(bool *opt, const char *arg)
1506 {
1507 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1508 ? TRUE : FALSE;
1509 return OK;
1510 }
1512 static int
1513 parse_string(char *opt, const char *arg, size_t optsize)
1514 {
1515 int arglen = strlen(arg);
1517 switch (arg[0]) {
1518 case '\"':
1519 case '\'':
1520 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1521 config_msg = "Unmatched quotation";
1522 return ERR;
1523 }
1524 arg += 1; arglen -= 2;
1525 default:
1526 string_ncopy_do(opt, optsize, arg, arglen);
1527 return OK;
1528 }
1529 }
1531 /* Wants: name = value */
1532 static int
1533 option_set_command(int argc, const char *argv[])
1534 {
1535 if (argc != 3) {
1536 config_msg = "Wrong number of arguments given to set command";
1537 return ERR;
1538 }
1540 if (strcmp(argv[1], "=")) {
1541 config_msg = "No value assigned";
1542 return ERR;
1543 }
1545 if (!strcmp(argv[0], "show-author"))
1546 return parse_bool(&opt_author, argv[2]);
1548 if (!strcmp(argv[0], "show-date"))
1549 return parse_bool(&opt_date, argv[2]);
1551 if (!strcmp(argv[0], "show-rev-graph"))
1552 return parse_bool(&opt_rev_graph, argv[2]);
1554 if (!strcmp(argv[0], "show-refs"))
1555 return parse_bool(&opt_show_refs, argv[2]);
1557 if (!strcmp(argv[0], "show-line-numbers"))
1558 return parse_bool(&opt_line_number, argv[2]);
1560 if (!strcmp(argv[0], "line-graphics"))
1561 return parse_bool(&opt_line_graphics, argv[2]);
1563 if (!strcmp(argv[0], "line-number-interval"))
1564 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1566 if (!strcmp(argv[0], "author-width"))
1567 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1569 if (!strcmp(argv[0], "horizontal-scroll"))
1570 return parse_step(&opt_hscroll, argv[2]);
1572 if (!strcmp(argv[0], "tab-size"))
1573 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1575 if (!strcmp(argv[0], "commit-encoding"))
1576 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1578 config_msg = "Unknown variable name";
1579 return ERR;
1580 }
1582 /* Wants: mode request key */
1583 static int
1584 option_bind_command(int argc, const char *argv[])
1585 {
1586 enum request request;
1587 int keymap;
1588 int key;
1590 if (argc < 3) {
1591 config_msg = "Wrong number of arguments given to bind command";
1592 return ERR;
1593 }
1595 if (set_keymap(&keymap, argv[0]) == ERR) {
1596 config_msg = "Unknown key map";
1597 return ERR;
1598 }
1600 key = get_key_value(argv[1]);
1601 if (key == ERR) {
1602 config_msg = "Unknown key";
1603 return ERR;
1604 }
1606 request = get_request(argv[2]);
1607 if (request == REQ_NONE) {
1608 static const struct enum_map obsolete[] = {
1609 ENUM_MAP("cherry-pick", REQ_NONE),
1610 ENUM_MAP("screen-resize", REQ_NONE),
1611 ENUM_MAP("tree-parent", REQ_PARENT),
1612 };
1613 int alias;
1615 if (map_enum(&alias, obsolete, argv[2])) {
1616 if (alias != REQ_NONE)
1617 add_keybinding(keymap, alias, key);
1618 config_msg = "Obsolete request name";
1619 return ERR;
1620 }
1621 }
1622 if (request == REQ_NONE && *argv[2]++ == '!')
1623 request = add_run_request(keymap, key, argc - 2, argv + 2);
1624 if (request == REQ_NONE) {
1625 config_msg = "Unknown request name";
1626 return ERR;
1627 }
1629 add_keybinding(keymap, request, key);
1631 return OK;
1632 }
1634 static int
1635 set_option(const char *opt, char *value)
1636 {
1637 const char *argv[SIZEOF_ARG];
1638 int argc = 0;
1640 if (!argv_from_string(argv, &argc, value)) {
1641 config_msg = "Too many option arguments";
1642 return ERR;
1643 }
1645 if (!strcmp(opt, "color"))
1646 return option_color_command(argc, argv);
1648 if (!strcmp(opt, "set"))
1649 return option_set_command(argc, argv);
1651 if (!strcmp(opt, "bind"))
1652 return option_bind_command(argc, argv);
1654 config_msg = "Unknown option command";
1655 return ERR;
1656 }
1658 static int
1659 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1660 {
1661 int status = OK;
1663 config_lineno++;
1664 config_msg = "Internal error";
1666 /* Check for comment markers, since read_properties() will
1667 * only ensure opt and value are split at first " \t". */
1668 optlen = strcspn(opt, "#");
1669 if (optlen == 0)
1670 return OK;
1672 if (opt[optlen] != 0) {
1673 config_msg = "No option value";
1674 status = ERR;
1676 } else {
1677 /* Look for comment endings in the value. */
1678 size_t len = strcspn(value, "#");
1680 if (len < valuelen) {
1681 valuelen = len;
1682 value[valuelen] = 0;
1683 }
1685 status = set_option(opt, value);
1686 }
1688 if (status == ERR) {
1689 warn("Error on line %d, near '%.*s': %s",
1690 config_lineno, (int) optlen, opt, config_msg);
1691 config_errors = TRUE;
1692 }
1694 /* Always keep going if errors are encountered. */
1695 return OK;
1696 }
1698 static void
1699 load_option_file(const char *path)
1700 {
1701 struct io io = {};
1703 /* It's OK that the file doesn't exist. */
1704 if (!io_open(&io, path))
1705 return;
1707 config_lineno = 0;
1708 config_errors = FALSE;
1710 if (io_load(&io, " \t", read_option) == ERR ||
1711 config_errors == TRUE)
1712 warn("Errors while loading %s.", path);
1713 }
1715 static int
1716 load_options(void)
1717 {
1718 const char *home = getenv("HOME");
1719 const char *tigrc_user = getenv("TIGRC_USER");
1720 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1721 char buf[SIZEOF_STR];
1723 add_builtin_run_requests();
1725 if (!tigrc_system)
1726 tigrc_system = SYSCONFDIR "/tigrc";
1727 load_option_file(tigrc_system);
1729 if (!tigrc_user) {
1730 if (!home || !string_format(buf, "%s/.tigrc", home))
1731 return ERR;
1732 tigrc_user = buf;
1733 }
1734 load_option_file(tigrc_user);
1736 return OK;
1737 }
1740 /*
1741 * The viewer
1742 */
1744 struct view;
1745 struct view_ops;
1747 /* The display array of active views and the index of the current view. */
1748 static struct view *display[2];
1749 static unsigned int current_view;
1751 #define foreach_displayed_view(view, i) \
1752 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1754 #define displayed_views() (display[1] != NULL ? 2 : 1)
1756 /* Current head and commit ID */
1757 static char ref_blob[SIZEOF_REF] = "";
1758 static char ref_commit[SIZEOF_REF] = "HEAD";
1759 static char ref_head[SIZEOF_REF] = "HEAD";
1761 struct view {
1762 const char *name; /* View name */
1763 const char *cmd_env; /* Command line set via environment */
1764 const char *id; /* Points to either of ref_{head,commit,blob} */
1766 struct view_ops *ops; /* View operations */
1768 enum keymap keymap; /* What keymap does this view have */
1769 bool git_dir; /* Whether the view requires a git directory. */
1771 char ref[SIZEOF_REF]; /* Hovered commit reference */
1772 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1774 int height, width; /* The width and height of the main window */
1775 WINDOW *win; /* The main window */
1776 WINDOW *title; /* The title window living below the main window */
1778 /* Navigation */
1779 unsigned long offset; /* Offset of the window top */
1780 unsigned long yoffset; /* Offset from the window side. */
1781 unsigned long lineno; /* Current line number */
1782 unsigned long p_offset; /* Previous offset of the window top */
1783 unsigned long p_yoffset;/* Previous offset from the window side */
1784 unsigned long p_lineno; /* Previous current line number */
1785 bool p_restore; /* Should the previous position be restored. */
1787 /* Searching */
1788 char grep[SIZEOF_STR]; /* Search string */
1789 regex_t *regex; /* Pre-compiled regexp */
1791 /* If non-NULL, points to the view that opened this view. If this view
1792 * is closed tig will switch back to the parent view. */
1793 struct view *parent;
1795 /* Buffering */
1796 size_t lines; /* Total number of lines */
1797 struct line *line; /* Line index */
1798 unsigned int digits; /* Number of digits in the lines member. */
1800 /* Drawing */
1801 struct line *curline; /* Line currently being drawn. */
1802 enum line_type curtype; /* Attribute currently used for drawing. */
1803 unsigned long col; /* Column when drawing. */
1804 bool has_scrolled; /* View was scrolled. */
1806 /* Loading */
1807 struct io io;
1808 struct io *pipe;
1809 time_t start_time;
1810 time_t update_secs;
1811 };
1813 struct view_ops {
1814 /* What type of content being displayed. Used in the title bar. */
1815 const char *type;
1816 /* Default command arguments. */
1817 const char **argv;
1818 /* Open and reads in all view content. */
1819 bool (*open)(struct view *view);
1820 /* Read one line; updates view->line. */
1821 bool (*read)(struct view *view, char *data);
1822 /* Draw one line; @lineno must be < view->height. */
1823 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1824 /* Depending on view handle a special requests. */
1825 enum request (*request)(struct view *view, enum request request, struct line *line);
1826 /* Search for regexp in a line. */
1827 bool (*grep)(struct view *view, struct line *line);
1828 /* Select line */
1829 void (*select)(struct view *view, struct line *line);
1830 };
1832 static struct view_ops blame_ops;
1833 static struct view_ops blob_ops;
1834 static struct view_ops diff_ops;
1835 static struct view_ops help_ops;
1836 static struct view_ops log_ops;
1837 static struct view_ops main_ops;
1838 static struct view_ops pager_ops;
1839 static struct view_ops stage_ops;
1840 static struct view_ops status_ops;
1841 static struct view_ops tree_ops;
1843 #define VIEW_STR(name, env, ref, ops, map, git) \
1844 { name, #env, ref, ops, map, git }
1846 #define VIEW_(id, name, ops, git, ref) \
1847 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1850 static struct view views[] = {
1851 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1852 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1853 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1854 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1855 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1856 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1857 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1858 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1859 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1860 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1861 };
1863 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1864 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1866 #define foreach_view(view, i) \
1867 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1869 #define view_is_displayed(view) \
1870 (view == display[0] || view == display[1])
1873 enum line_graphic {
1874 LINE_GRAPHIC_VLINE
1875 };
1877 static chtype line_graphics[] = {
1878 /* LINE_GRAPHIC_VLINE: */ '|'
1879 };
1881 static inline void
1882 set_view_attr(struct view *view, enum line_type type)
1883 {
1884 if (!view->curline->selected && view->curtype != type) {
1885 wattrset(view->win, get_line_attr(type));
1886 wchgat(view->win, -1, 0, type, NULL);
1887 view->curtype = type;
1888 }
1889 }
1891 static int
1892 draw_chars(struct view *view, enum line_type type, const char *string,
1893 int max_len, bool use_tilde)
1894 {
1895 int len = 0;
1896 int col = 0;
1897 int trimmed = FALSE;
1898 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1900 if (max_len <= 0)
1901 return 0;
1903 if (opt_utf8) {
1904 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde);
1905 } else {
1906 col = len = strlen(string);
1907 if (len > max_len) {
1908 if (use_tilde) {
1909 max_len -= 1;
1910 }
1911 col = len = max_len;
1912 trimmed = TRUE;
1913 }
1914 }
1916 set_view_attr(view, type);
1917 if (len > 0)
1918 waddnstr(view->win, string, len);
1919 if (trimmed && use_tilde) {
1920 set_view_attr(view, LINE_DELIMITER);
1921 waddch(view->win, '~');
1922 col++;
1923 }
1925 return col;
1926 }
1928 static int
1929 draw_space(struct view *view, enum line_type type, int max, int spaces)
1930 {
1931 static char space[] = " ";
1932 int col = 0;
1934 spaces = MIN(max, spaces);
1936 while (spaces > 0) {
1937 int len = MIN(spaces, sizeof(space) - 1);
1939 col += draw_chars(view, type, space, len, FALSE);
1940 spaces -= len;
1941 }
1943 return col;
1944 }
1946 static bool
1947 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1948 {
1949 view->col += draw_chars(view, type, string, view->width + view->yoffset - view->col, trim);
1950 return view->width + view->yoffset <= view->col;
1951 }
1953 static bool
1954 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1955 {
1956 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1957 int max = view->width + view->yoffset - view->col;
1958 int i;
1960 if (max < size)
1961 size = max;
1963 set_view_attr(view, type);
1964 /* Using waddch() instead of waddnstr() ensures that
1965 * they'll be rendered correctly for the cursor line. */
1966 for (i = skip; i < size; i++)
1967 waddch(view->win, graphic[i]);
1969 view->col += size;
1970 if (size < max && skip <= size)
1971 waddch(view->win, ' ');
1972 view->col++;
1974 return view->width + view->yoffset <= view->col;
1975 }
1977 static bool
1978 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1979 {
1980 int max = MIN(view->width + view->yoffset - view->col, len);
1981 int col;
1983 if (text)
1984 col = draw_chars(view, type, text, max - 1, trim);
1985 else
1986 col = draw_space(view, type, max - 1, max - 1);
1988 view->col += col;
1989 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
1990 return view->width + view->yoffset <= view->col;
1991 }
1993 static bool
1994 draw_date(struct view *view, time_t *time)
1995 {
1996 const char *date = mkdate(time);
1998 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1999 }
2001 static bool
2002 draw_author(struct view *view, const char *author)
2003 {
2004 bool trim = opt_author_cols == 0 || opt_author_cols > 5 || !author;
2006 if (!trim) {
2007 static char initials[10];
2008 size_t pos;
2010 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@')
2012 memset(initials, 0, sizeof(initials));
2013 for (pos = 0; *author && pos < opt_author_cols - 1; author++, pos++) {
2014 while (is_initial_sep(*author))
2015 author++;
2016 strncpy(&initials[pos], author, sizeof(initials) - 1 - pos);
2017 while (*author && !is_initial_sep(author[1]))
2018 author++;
2019 }
2021 author = initials;
2022 }
2024 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
2025 }
2027 static bool
2028 draw_mode(struct view *view, mode_t mode)
2029 {
2030 const char *str;
2032 if (S_ISDIR(mode))
2033 str = "drwxr-xr-x";
2034 else if (S_ISLNK(mode))
2035 str = "lrwxrwxrwx";
2036 else if (S_ISGITLINK(mode))
2037 str = "m---------";
2038 else if (S_ISREG(mode) && mode & S_IXUSR)
2039 str = "-rwxr-xr-x";
2040 else if (S_ISREG(mode))
2041 str = "-rw-r--r--";
2042 else
2043 str = "----------";
2045 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
2046 }
2048 static bool
2049 draw_lineno(struct view *view, unsigned int lineno)
2050 {
2051 char number[10];
2052 int digits3 = view->digits < 3 ? 3 : view->digits;
2053 int max = MIN(view->width + view->yoffset - view->col, digits3);
2054 char *text = NULL;
2056 lineno += view->offset + 1;
2057 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2058 static char fmt[] = "%1ld";
2060 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2061 if (string_format(number, fmt, lineno))
2062 text = number;
2063 }
2064 if (text)
2065 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2066 else
2067 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
2068 return draw_graphic(view, LINE_DEFAULT, &line_graphics[LINE_GRAPHIC_VLINE], 1);
2069 }
2071 static bool
2072 draw_view_line(struct view *view, unsigned int lineno)
2073 {
2074 struct line *line;
2075 bool selected = (view->offset + lineno == view->lineno);
2077 assert(view_is_displayed(view));
2079 if (view->offset + lineno >= view->lines)
2080 return FALSE;
2082 line = &view->line[view->offset + lineno];
2084 wmove(view->win, lineno, 0);
2085 if (line->cleareol)
2086 wclrtoeol(view->win);
2087 view->col = 0;
2088 view->curline = line;
2089 view->curtype = LINE_NONE;
2090 line->selected = FALSE;
2091 line->dirty = line->cleareol = 0;
2093 if (selected) {
2094 set_view_attr(view, LINE_CURSOR);
2095 line->selected = TRUE;
2096 view->ops->select(view, line);
2097 }
2099 return view->ops->draw(view, line, lineno);
2100 }
2102 static void
2103 redraw_view_dirty(struct view *view)
2104 {
2105 bool dirty = FALSE;
2106 int lineno;
2108 for (lineno = 0; lineno < view->height; lineno++) {
2109 if (view->offset + lineno >= view->lines)
2110 break;
2111 if (!view->line[view->offset + lineno].dirty)
2112 continue;
2113 dirty = TRUE;
2114 if (!draw_view_line(view, lineno))
2115 break;
2116 }
2118 if (!dirty)
2119 return;
2120 wnoutrefresh(view->win);
2121 }
2123 static void
2124 redraw_view_from(struct view *view, int lineno)
2125 {
2126 assert(0 <= lineno && lineno < view->height);
2128 for (; lineno < view->height; lineno++) {
2129 if (!draw_view_line(view, lineno))
2130 break;
2131 }
2133 wnoutrefresh(view->win);
2134 }
2136 static void
2137 redraw_view(struct view *view)
2138 {
2139 werase(view->win);
2140 redraw_view_from(view, 0);
2141 }
2144 static void
2145 update_view_title(struct view *view)
2146 {
2147 char buf[SIZEOF_STR];
2148 char state[SIZEOF_STR];
2149 size_t bufpos = 0, statelen = 0;
2151 assert(view_is_displayed(view));
2153 if (view != VIEW(REQ_VIEW_STATUS) && view->lines) {
2154 unsigned int view_lines = view->offset + view->height;
2155 unsigned int lines = view->lines
2156 ? MIN(view_lines, view->lines) * 100 / view->lines
2157 : 0;
2159 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2160 view->ops->type,
2161 view->lineno + 1,
2162 view->lines,
2163 lines);
2165 }
2167 if (view->pipe) {
2168 time_t secs = time(NULL) - view->start_time;
2170 /* Three git seconds are a long time ... */
2171 if (secs > 2)
2172 string_format_from(state, &statelen, " loading %lds", secs);
2173 }
2175 string_format_from(buf, &bufpos, "[%s]", view->name);
2176 if (*view->ref && bufpos < view->width) {
2177 size_t refsize = strlen(view->ref);
2178 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2180 if (minsize < view->width)
2181 refsize = view->width - minsize + 7;
2182 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2183 }
2185 if (statelen && bufpos < view->width) {
2186 string_format_from(buf, &bufpos, "%s", state);
2187 }
2189 if (view == display[current_view])
2190 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2191 else
2192 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2194 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2195 wclrtoeol(view->title);
2196 wnoutrefresh(view->title);
2197 }
2199 static void
2200 resize_display(void)
2201 {
2202 int offset, i;
2203 struct view *base = display[0];
2204 struct view *view = display[1] ? display[1] : display[0];
2206 /* Setup window dimensions */
2208 getmaxyx(stdscr, base->height, base->width);
2210 /* Make room for the status window. */
2211 base->height -= 1;
2213 if (view != base) {
2214 /* Horizontal split. */
2215 view->width = base->width;
2216 view->height = SCALE_SPLIT_VIEW(base->height);
2217 base->height -= view->height;
2219 /* Make room for the title bar. */
2220 view->height -= 1;
2221 }
2223 /* Make room for the title bar. */
2224 base->height -= 1;
2226 offset = 0;
2228 foreach_displayed_view (view, i) {
2229 if (!view->win) {
2230 view->win = newwin(view->height, 0, offset, 0);
2231 if (!view->win)
2232 die("Failed to create %s view", view->name);
2234 scrollok(view->win, FALSE);
2236 view->title = newwin(1, 0, offset + view->height, 0);
2237 if (!view->title)
2238 die("Failed to create title window");
2240 } else {
2241 wresize(view->win, view->height, view->width);
2242 mvwin(view->win, offset, 0);
2243 mvwin(view->title, offset + view->height, 0);
2244 }
2246 offset += view->height + 1;
2247 }
2248 }
2250 static void
2251 redraw_display(bool clear)
2252 {
2253 struct view *view;
2254 int i;
2256 foreach_displayed_view (view, i) {
2257 if (clear)
2258 wclear(view->win);
2259 redraw_view(view);
2260 update_view_title(view);
2261 }
2262 }
2264 static void
2265 toggle_view_option(bool *option, const char *help)
2266 {
2267 *option = !*option;
2268 redraw_display(FALSE);
2269 report("%sabling %s", *option ? "En" : "Dis", help);
2270 }
2272 static void
2273 maximize_view(struct view *view)
2274 {
2275 memset(display, 0, sizeof(display));
2276 current_view = 0;
2277 display[current_view] = view;
2278 resize_display();
2279 redraw_display(FALSE);
2280 report("");
2281 }
2284 /*
2285 * Navigation
2286 */
2288 static bool
2289 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2290 {
2291 if (lineno >= view->lines)
2292 lineno = view->lines > 0 ? view->lines - 1 : 0;
2294 if (offset > lineno || offset + view->height <= lineno) {
2295 unsigned long half = view->height / 2;
2297 if (lineno > half)
2298 offset = lineno - half;
2299 else
2300 offset = 0;
2301 }
2303 if (offset != view->offset || lineno != view->lineno) {
2304 view->offset = offset;
2305 view->lineno = lineno;
2306 return TRUE;
2307 }
2309 return FALSE;
2310 }
2312 static int
2313 apply_step(double step, int value)
2314 {
2315 if (step >= 1)
2316 return (int) step;
2317 value *= step + 0.01;
2318 return value ? value : 1;
2319 }
2321 /* Scrolling backend */
2322 static void
2323 do_scroll_view(struct view *view, int lines)
2324 {
2325 bool redraw_current_line = FALSE;
2327 /* The rendering expects the new offset. */
2328 view->offset += lines;
2330 assert(0 <= view->offset && view->offset < view->lines);
2331 assert(lines);
2333 /* Move current line into the view. */
2334 if (view->lineno < view->offset) {
2335 view->lineno = view->offset;
2336 redraw_current_line = TRUE;
2337 } else if (view->lineno >= view->offset + view->height) {
2338 view->lineno = view->offset + view->height - 1;
2339 redraw_current_line = TRUE;
2340 }
2342 assert(view->offset <= view->lineno && view->lineno < view->lines);
2344 /* Redraw the whole screen if scrolling is pointless. */
2345 if (view->height < ABS(lines)) {
2346 redraw_view(view);
2348 } else {
2349 int line = lines > 0 ? view->height - lines : 0;
2350 int end = line + ABS(lines);
2352 scrollok(view->win, TRUE);
2353 wscrl(view->win, lines);
2354 scrollok(view->win, FALSE);
2356 while (line < end && draw_view_line(view, line))
2357 line++;
2359 if (redraw_current_line)
2360 draw_view_line(view, view->lineno - view->offset);
2361 wnoutrefresh(view->win);
2362 }
2364 view->has_scrolled = TRUE;
2365 report("");
2366 }
2368 /* Scroll frontend */
2369 static void
2370 scroll_view(struct view *view, enum request request)
2371 {
2372 int lines = 1;
2374 assert(view_is_displayed(view));
2376 switch (request) {
2377 case REQ_SCROLL_LEFT:
2378 if (view->yoffset == 0) {
2379 report("Cannot scroll beyond the first column");
2380 return;
2381 }
2382 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2383 view->yoffset = 0;
2384 else
2385 view->yoffset -= apply_step(opt_hscroll, view->width);
2386 redraw_view_from(view, 0);
2387 report("");
2388 return;
2389 case REQ_SCROLL_RIGHT:
2390 view->yoffset += apply_step(opt_hscroll, view->width);
2391 redraw_view(view);
2392 report("");
2393 return;
2394 case REQ_SCROLL_PAGE_DOWN:
2395 lines = view->height;
2396 case REQ_SCROLL_LINE_DOWN:
2397 if (view->offset + lines > view->lines)
2398 lines = view->lines - view->offset;
2400 if (lines == 0 || view->offset + view->height >= view->lines) {
2401 report("Cannot scroll beyond the last line");
2402 return;
2403 }
2404 break;
2406 case REQ_SCROLL_PAGE_UP:
2407 lines = view->height;
2408 case REQ_SCROLL_LINE_UP:
2409 if (lines > view->offset)
2410 lines = view->offset;
2412 if (lines == 0) {
2413 report("Cannot scroll beyond the first line");
2414 return;
2415 }
2417 lines = -lines;
2418 break;
2420 default:
2421 die("request %d not handled in switch", request);
2422 }
2424 do_scroll_view(view, lines);
2425 }
2427 /* Cursor moving */
2428 static void
2429 move_view(struct view *view, enum request request)
2430 {
2431 int scroll_steps = 0;
2432 int steps;
2434 switch (request) {
2435 case REQ_MOVE_FIRST_LINE:
2436 steps = -view->lineno;
2437 break;
2439 case REQ_MOVE_LAST_LINE:
2440 steps = view->lines - view->lineno - 1;
2441 break;
2443 case REQ_MOVE_PAGE_UP:
2444 steps = view->height > view->lineno
2445 ? -view->lineno : -view->height;
2446 break;
2448 case REQ_MOVE_PAGE_DOWN:
2449 steps = view->lineno + view->height >= view->lines
2450 ? view->lines - view->lineno - 1 : view->height;
2451 break;
2453 case REQ_MOVE_UP:
2454 steps = -1;
2455 break;
2457 case REQ_MOVE_DOWN:
2458 steps = 1;
2459 break;
2461 default:
2462 die("request %d not handled in switch", request);
2463 }
2465 if (steps <= 0 && view->lineno == 0) {
2466 report("Cannot move beyond the first line");
2467 return;
2469 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2470 report("Cannot move beyond the last line");
2471 return;
2472 }
2474 /* Move the current line */
2475 view->lineno += steps;
2476 assert(0 <= view->lineno && view->lineno < view->lines);
2478 /* Check whether the view needs to be scrolled */
2479 if (view->lineno < view->offset ||
2480 view->lineno >= view->offset + view->height) {
2481 scroll_steps = steps;
2482 if (steps < 0 && -steps > view->offset) {
2483 scroll_steps = -view->offset;
2485 } else if (steps > 0) {
2486 if (view->lineno == view->lines - 1 &&
2487 view->lines > view->height) {
2488 scroll_steps = view->lines - view->offset - 1;
2489 if (scroll_steps >= view->height)
2490 scroll_steps -= view->height - 1;
2491 }
2492 }
2493 }
2495 if (!view_is_displayed(view)) {
2496 view->offset += scroll_steps;
2497 assert(0 <= view->offset && view->offset < view->lines);
2498 view->ops->select(view, &view->line[view->lineno]);
2499 return;
2500 }
2502 /* Repaint the old "current" line if we be scrolling */
2503 if (ABS(steps) < view->height)
2504 draw_view_line(view, view->lineno - steps - view->offset);
2506 if (scroll_steps) {
2507 do_scroll_view(view, scroll_steps);
2508 return;
2509 }
2511 /* Draw the current line */
2512 draw_view_line(view, view->lineno - view->offset);
2514 wnoutrefresh(view->win);
2515 report("");
2516 }
2519 /*
2520 * Searching
2521 */
2523 static void search_view(struct view *view, enum request request);
2525 static bool
2526 grep_text(struct view *view, const char *text[])
2527 {
2528 regmatch_t pmatch;
2529 size_t i;
2531 for (i = 0; text[i]; i++)
2532 if (*text[i] &&
2533 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2534 return TRUE;
2535 return FALSE;
2536 }
2538 static void
2539 select_view_line(struct view *view, unsigned long lineno)
2540 {
2541 unsigned long old_lineno = view->lineno;
2542 unsigned long old_offset = view->offset;
2544 if (goto_view_line(view, view->offset, lineno)) {
2545 if (view_is_displayed(view)) {
2546 if (old_offset != view->offset) {
2547 redraw_view(view);
2548 } else {
2549 draw_view_line(view, old_lineno - view->offset);
2550 draw_view_line(view, view->lineno - view->offset);
2551 wnoutrefresh(view->win);
2552 }
2553 } else {
2554 view->ops->select(view, &view->line[view->lineno]);
2555 }
2556 }
2557 }
2559 static void
2560 find_next(struct view *view, enum request request)
2561 {
2562 unsigned long lineno = view->lineno;
2563 int direction;
2565 if (!*view->grep) {
2566 if (!*opt_search)
2567 report("No previous search");
2568 else
2569 search_view(view, request);
2570 return;
2571 }
2573 switch (request) {
2574 case REQ_SEARCH:
2575 case REQ_FIND_NEXT:
2576 direction = 1;
2577 break;
2579 case REQ_SEARCH_BACK:
2580 case REQ_FIND_PREV:
2581 direction = -1;
2582 break;
2584 default:
2585 return;
2586 }
2588 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2589 lineno += direction;
2591 /* Note, lineno is unsigned long so will wrap around in which case it
2592 * will become bigger than view->lines. */
2593 for (; lineno < view->lines; lineno += direction) {
2594 if (view->ops->grep(view, &view->line[lineno])) {
2595 select_view_line(view, lineno);
2596 report("Line %ld matches '%s'", lineno + 1, view->grep);
2597 return;
2598 }
2599 }
2601 report("No match found for '%s'", view->grep);
2602 }
2604 static void
2605 search_view(struct view *view, enum request request)
2606 {
2607 int regex_err;
2609 if (view->regex) {
2610 regfree(view->regex);
2611 *view->grep = 0;
2612 } else {
2613 view->regex = calloc(1, sizeof(*view->regex));
2614 if (!view->regex)
2615 return;
2616 }
2618 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2619 if (regex_err != 0) {
2620 char buf[SIZEOF_STR] = "unknown error";
2622 regerror(regex_err, view->regex, buf, sizeof(buf));
2623 report("Search failed: %s", buf);
2624 return;
2625 }
2627 string_copy(view->grep, opt_search);
2629 find_next(view, request);
2630 }
2632 /*
2633 * Incremental updating
2634 */
2636 static void
2637 reset_view(struct view *view)
2638 {
2639 int i;
2641 for (i = 0; i < view->lines; i++)
2642 free(view->line[i].data);
2643 free(view->line);
2645 view->p_offset = view->offset;
2646 view->p_yoffset = view->yoffset;
2647 view->p_lineno = view->lineno;
2649 view->line = NULL;
2650 view->offset = 0;
2651 view->yoffset = 0;
2652 view->lines = 0;
2653 view->lineno = 0;
2654 view->vid[0] = 0;
2655 view->update_secs = 0;
2656 }
2658 static void
2659 free_argv(const char *argv[])
2660 {
2661 int argc;
2663 for (argc = 0; argv[argc]; argc++)
2664 free((void *) argv[argc]);
2665 }
2667 static bool
2668 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2669 {
2670 char buf[SIZEOF_STR];
2671 int argc;
2672 bool noreplace = flags == FORMAT_NONE;
2674 free_argv(dst_argv);
2676 for (argc = 0; src_argv[argc]; argc++) {
2677 const char *arg = src_argv[argc];
2678 size_t bufpos = 0;
2680 while (arg) {
2681 char *next = strstr(arg, "%(");
2682 int len = next - arg;
2683 const char *value;
2685 if (!next || noreplace) {
2686 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2687 noreplace = TRUE;
2688 len = strlen(arg);
2689 value = "";
2691 } else if (!prefixcmp(next, "%(directory)")) {
2692 value = opt_path;
2694 } else if (!prefixcmp(next, "%(file)")) {
2695 value = opt_file;
2697 } else if (!prefixcmp(next, "%(ref)")) {
2698 value = *opt_ref ? opt_ref : "HEAD";
2700 } else if (!prefixcmp(next, "%(head)")) {
2701 value = ref_head;
2703 } else if (!prefixcmp(next, "%(commit)")) {
2704 value = ref_commit;
2706 } else if (!prefixcmp(next, "%(blob)")) {
2707 value = ref_blob;
2709 } else {
2710 report("Unknown replacement: `%s`", next);
2711 return FALSE;
2712 }
2714 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2715 return FALSE;
2717 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2718 }
2720 dst_argv[argc] = strdup(buf);
2721 if (!dst_argv[argc])
2722 break;
2723 }
2725 dst_argv[argc] = NULL;
2727 return src_argv[argc] == NULL;
2728 }
2730 static bool
2731 restore_view_position(struct view *view)
2732 {
2733 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2734 return FALSE;
2736 /* Changing the view position cancels the restoring. */
2737 /* FIXME: Changing back to the first line is not detected. */
2738 if (view->offset != 0 || view->lineno != 0) {
2739 view->p_restore = FALSE;
2740 return FALSE;
2741 }
2743 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2744 view_is_displayed(view))
2745 werase(view->win);
2747 view->yoffset = view->p_yoffset;
2748 view->p_restore = FALSE;
2750 return TRUE;
2751 }
2753 static void
2754 end_update(struct view *view, bool force)
2755 {
2756 if (!view->pipe)
2757 return;
2758 while (!view->ops->read(view, NULL))
2759 if (!force)
2760 return;
2761 set_nonblocking_input(FALSE);
2762 if (force)
2763 kill_io(view->pipe);
2764 done_io(view->pipe);
2765 view->pipe = NULL;
2766 }
2768 static void
2769 setup_update(struct view *view, const char *vid)
2770 {
2771 set_nonblocking_input(TRUE);
2772 reset_view(view);
2773 string_copy_rev(view->vid, vid);
2774 view->pipe = &view->io;
2775 view->start_time = time(NULL);
2776 }
2778 static bool
2779 prepare_update(struct view *view, const char *argv[], const char *dir,
2780 enum format_flags flags)
2781 {
2782 if (view->pipe)
2783 end_update(view, TRUE);
2784 return init_io_rd(&view->io, argv, dir, flags);
2785 }
2787 static bool
2788 prepare_update_file(struct view *view, const char *name)
2789 {
2790 if (view->pipe)
2791 end_update(view, TRUE);
2792 return io_open(&view->io, name);
2793 }
2795 static bool
2796 begin_update(struct view *view, bool refresh)
2797 {
2798 if (view->pipe)
2799 end_update(view, TRUE);
2801 if (refresh) {
2802 if (!start_io(&view->io))
2803 return FALSE;
2805 } else {
2806 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2807 opt_path[0] = 0;
2809 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2810 return FALSE;
2812 /* Put the current ref_* value to the view title ref
2813 * member. This is needed by the blob view. Most other
2814 * views sets it automatically after loading because the
2815 * first line is a commit line. */
2816 string_copy_rev(view->ref, view->id);
2817 }
2819 setup_update(view, view->id);
2821 return TRUE;
2822 }
2824 static bool
2825 update_view(struct view *view)
2826 {
2827 char out_buffer[BUFSIZ * 2];
2828 char *line;
2829 /* Clear the view and redraw everything since the tree sorting
2830 * might have rearranged things. */
2831 bool redraw = view->lines == 0;
2832 bool can_read = TRUE;
2834 if (!view->pipe)
2835 return TRUE;
2837 if (!io_can_read(view->pipe)) {
2838 if (view->lines == 0 && view_is_displayed(view)) {
2839 time_t secs = time(NULL) - view->start_time;
2841 if (secs > 1 && secs > view->update_secs) {
2842 if (view->update_secs == 0)
2843 redraw_view(view);
2844 update_view_title(view);
2845 view->update_secs = secs;
2846 }
2847 }
2848 return TRUE;
2849 }
2851 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2852 if (opt_iconv != ICONV_NONE) {
2853 ICONV_CONST char *inbuf = line;
2854 size_t inlen = strlen(line) + 1;
2856 char *outbuf = out_buffer;
2857 size_t outlen = sizeof(out_buffer);
2859 size_t ret;
2861 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2862 if (ret != (size_t) -1)
2863 line = out_buffer;
2864 }
2866 if (!view->ops->read(view, line)) {
2867 report("Allocation failure");
2868 end_update(view, TRUE);
2869 return FALSE;
2870 }
2871 }
2873 {
2874 unsigned long lines = view->lines;
2875 int digits;
2877 for (digits = 0; lines; digits++)
2878 lines /= 10;
2880 /* Keep the displayed view in sync with line number scaling. */
2881 if (digits != view->digits) {
2882 view->digits = digits;
2883 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2884 redraw = TRUE;
2885 }
2886 }
2888 if (io_error(view->pipe)) {
2889 report("Failed to read: %s", io_strerror(view->pipe));
2890 end_update(view, TRUE);
2892 } else if (io_eof(view->pipe)) {
2893 report("");
2894 end_update(view, FALSE);
2895 }
2897 if (restore_view_position(view))
2898 redraw = TRUE;
2900 if (!view_is_displayed(view))
2901 return TRUE;
2903 if (redraw)
2904 redraw_view_from(view, 0);
2905 else
2906 redraw_view_dirty(view);
2908 /* Update the title _after_ the redraw so that if the redraw picks up a
2909 * commit reference in view->ref it'll be available here. */
2910 update_view_title(view);
2911 return TRUE;
2912 }
2914 DEFINE_ALLOCATOR(realloc_lines, struct line, 256)
2916 static struct line *
2917 add_line_data(struct view *view, void *data, enum line_type type)
2918 {
2919 struct line *line;
2921 if (!realloc_lines(&view->line, view->lines, 1))
2922 return NULL;
2924 line = &view->line[view->lines++];
2925 memset(line, 0, sizeof(*line));
2926 line->type = type;
2927 line->data = data;
2928 line->dirty = 1;
2930 return line;
2931 }
2933 static struct line *
2934 add_line_text(struct view *view, const char *text, enum line_type type)
2935 {
2936 char *data = text ? strdup(text) : NULL;
2938 return data ? add_line_data(view, data, type) : NULL;
2939 }
2941 static struct line *
2942 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2943 {
2944 char buf[SIZEOF_STR];
2945 va_list args;
2947 va_start(args, fmt);
2948 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2949 buf[0] = 0;
2950 va_end(args);
2952 return buf[0] ? add_line_text(view, buf, type) : NULL;
2953 }
2955 /*
2956 * View opening
2957 */
2959 enum open_flags {
2960 OPEN_DEFAULT = 0, /* Use default view switching. */
2961 OPEN_SPLIT = 1, /* Split current view. */
2962 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2963 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2964 OPEN_PREPARED = 32, /* Open already prepared command. */
2965 };
2967 static void
2968 open_view(struct view *prev, enum request request, enum open_flags flags)
2969 {
2970 bool split = !!(flags & OPEN_SPLIT);
2971 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2972 bool nomaximize = !!(flags & OPEN_REFRESH);
2973 struct view *view = VIEW(request);
2974 int nviews = displayed_views();
2975 struct view *base_view = display[0];
2977 if (view == prev && nviews == 1 && !reload) {
2978 report("Already in %s view", view->name);
2979 return;
2980 }
2982 if (view->git_dir && !opt_git_dir[0]) {
2983 report("The %s view is disabled in pager view", view->name);
2984 return;
2985 }
2987 if (split) {
2988 display[1] = view;
2989 current_view = 1;
2990 } else if (!nomaximize) {
2991 /* Maximize the current view. */
2992 memset(display, 0, sizeof(display));
2993 current_view = 0;
2994 display[current_view] = view;
2995 }
2997 /* Resize the view when switching between split- and full-screen,
2998 * or when switching between two different full-screen views. */
2999 if (nviews != displayed_views() ||
3000 (nviews == 1 && base_view != display[0]))
3001 resize_display();
3003 if (view->ops->open) {
3004 if (view->pipe)
3005 end_update(view, TRUE);
3006 if (!view->ops->open(view)) {
3007 report("Failed to load %s view", view->name);
3008 return;
3009 }
3010 restore_view_position(view);
3012 } else if ((reload || strcmp(view->vid, view->id)) &&
3013 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3014 report("Failed to load %s view", view->name);
3015 return;
3016 }
3018 if (split && prev->lineno - prev->offset >= prev->height) {
3019 /* Take the title line into account. */
3020 int lines = prev->lineno - prev->offset - prev->height + 1;
3022 /* Scroll the view that was split if the current line is
3023 * outside the new limited view. */
3024 do_scroll_view(prev, lines);
3025 }
3027 if (prev && view != prev) {
3028 if (split) {
3029 /* "Blur" the previous view. */
3030 update_view_title(prev);
3031 }
3033 view->parent = prev;
3034 }
3036 if (view->pipe && view->lines == 0) {
3037 /* Clear the old view and let the incremental updating refill
3038 * the screen. */
3039 werase(view->win);
3040 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3041 report("");
3042 } else if (view_is_displayed(view)) {
3043 redraw_view(view);
3044 report("");
3045 }
3046 }
3048 static void
3049 open_external_viewer(const char *argv[], const char *dir)
3050 {
3051 def_prog_mode(); /* save current tty modes */
3052 endwin(); /* restore original tty modes */
3053 run_io_fg(argv, dir);
3054 fprintf(stderr, "Press Enter to continue");
3055 getc(opt_tty);
3056 reset_prog_mode();
3057 redraw_display(TRUE);
3058 }
3060 static void
3061 open_mergetool(const char *file)
3062 {
3063 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3065 open_external_viewer(mergetool_argv, opt_cdup);
3066 }
3068 static void
3069 open_editor(bool from_root, const char *file)
3070 {
3071 const char *editor_argv[] = { "vi", file, NULL };
3072 const char *editor;
3074 editor = getenv("GIT_EDITOR");
3075 if (!editor && *opt_editor)
3076 editor = opt_editor;
3077 if (!editor)
3078 editor = getenv("VISUAL");
3079 if (!editor)
3080 editor = getenv("EDITOR");
3081 if (!editor)
3082 editor = "vi";
3084 editor_argv[0] = editor;
3085 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
3086 }
3088 static void
3089 open_run_request(enum request request)
3090 {
3091 struct run_request *req = get_run_request(request);
3092 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3094 if (!req) {
3095 report("Unknown run request");
3096 return;
3097 }
3099 if (format_argv(argv, req->argv, FORMAT_ALL))
3100 open_external_viewer(argv, NULL);
3101 free_argv(argv);
3102 }
3104 /*
3105 * User request switch noodle
3106 */
3108 static int
3109 view_driver(struct view *view, enum request request)
3110 {
3111 int i;
3113 if (request == REQ_NONE)
3114 return TRUE;
3116 if (request > REQ_NONE) {
3117 open_run_request(request);
3118 /* FIXME: When all views can refresh always do this. */
3119 if (view == VIEW(REQ_VIEW_STATUS) ||
3120 view == VIEW(REQ_VIEW_MAIN) ||
3121 view == VIEW(REQ_VIEW_LOG) ||
3122 view == VIEW(REQ_VIEW_STAGE))
3123 request = REQ_REFRESH;
3124 else
3125 return TRUE;
3126 }
3128 if (view && view->lines) {
3129 request = view->ops->request(view, request, &view->line[view->lineno]);
3130 if (request == REQ_NONE)
3131 return TRUE;
3132 }
3134 switch (request) {
3135 case REQ_MOVE_UP:
3136 case REQ_MOVE_DOWN:
3137 case REQ_MOVE_PAGE_UP:
3138 case REQ_MOVE_PAGE_DOWN:
3139 case REQ_MOVE_FIRST_LINE:
3140 case REQ_MOVE_LAST_LINE:
3141 move_view(view, request);
3142 break;
3144 case REQ_SCROLL_LEFT:
3145 case REQ_SCROLL_RIGHT:
3146 case REQ_SCROLL_LINE_DOWN:
3147 case REQ_SCROLL_LINE_UP:
3148 case REQ_SCROLL_PAGE_DOWN:
3149 case REQ_SCROLL_PAGE_UP:
3150 scroll_view(view, request);
3151 break;
3153 case REQ_VIEW_BLAME:
3154 if (!opt_file[0]) {
3155 report("No file chosen, press %s to open tree view",
3156 get_key(REQ_VIEW_TREE));
3157 break;
3158 }
3159 open_view(view, request, OPEN_DEFAULT);
3160 break;
3162 case REQ_VIEW_BLOB:
3163 if (!ref_blob[0]) {
3164 report("No file chosen, press %s to open tree view",
3165 get_key(REQ_VIEW_TREE));
3166 break;
3167 }
3168 open_view(view, request, OPEN_DEFAULT);
3169 break;
3171 case REQ_VIEW_PAGER:
3172 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3173 report("No pager content, press %s to run command from prompt",
3174 get_key(REQ_PROMPT));
3175 break;
3176 }
3177 open_view(view, request, OPEN_DEFAULT);
3178 break;
3180 case REQ_VIEW_STAGE:
3181 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3182 report("No stage content, press %s to open the status view and choose file",
3183 get_key(REQ_VIEW_STATUS));
3184 break;
3185 }
3186 open_view(view, request, OPEN_DEFAULT);
3187 break;
3189 case REQ_VIEW_STATUS:
3190 if (opt_is_inside_work_tree == FALSE) {
3191 report("The status view requires a working tree");
3192 break;
3193 }
3194 open_view(view, request, OPEN_DEFAULT);
3195 break;
3197 case REQ_VIEW_MAIN:
3198 case REQ_VIEW_DIFF:
3199 case REQ_VIEW_LOG:
3200 case REQ_VIEW_TREE:
3201 case REQ_VIEW_HELP:
3202 open_view(view, request, OPEN_DEFAULT);
3203 break;
3205 case REQ_NEXT:
3206 case REQ_PREVIOUS:
3207 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3209 if ((view == VIEW(REQ_VIEW_DIFF) &&
3210 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3211 (view == VIEW(REQ_VIEW_DIFF) &&
3212 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3213 (view == VIEW(REQ_VIEW_STAGE) &&
3214 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3215 (view == VIEW(REQ_VIEW_BLOB) &&
3216 view->parent == VIEW(REQ_VIEW_TREE))) {
3217 int line;
3219 view = view->parent;
3220 line = view->lineno;
3221 move_view(view, request);
3222 if (view_is_displayed(view))
3223 update_view_title(view);
3224 if (line != view->lineno)
3225 view->ops->request(view, REQ_ENTER,
3226 &view->line[view->lineno]);
3228 } else {
3229 move_view(view, request);
3230 }
3231 break;
3233 case REQ_VIEW_NEXT:
3234 {
3235 int nviews = displayed_views();
3236 int next_view = (current_view + 1) % nviews;
3238 if (next_view == current_view) {
3239 report("Only one view is displayed");
3240 break;
3241 }
3243 current_view = next_view;
3244 /* Blur out the title of the previous view. */
3245 update_view_title(view);
3246 report("");
3247 break;
3248 }
3249 case REQ_REFRESH:
3250 report("Refreshing is not yet supported for the %s view", view->name);
3251 break;
3253 case REQ_MAXIMIZE:
3254 if (displayed_views() == 2)
3255 maximize_view(view);
3256 break;
3258 case REQ_TOGGLE_LINENO:
3259 toggle_view_option(&opt_line_number, "line numbers");
3260 break;
3262 case REQ_TOGGLE_DATE:
3263 toggle_view_option(&opt_date, "date display");
3264 break;
3266 case REQ_TOGGLE_AUTHOR:
3267 toggle_view_option(&opt_author, "author display");
3268 break;
3270 case REQ_TOGGLE_REV_GRAPH:
3271 toggle_view_option(&opt_rev_graph, "revision graph display");
3272 break;
3274 case REQ_TOGGLE_REFS:
3275 toggle_view_option(&opt_show_refs, "reference display");
3276 break;
3278 case REQ_SEARCH:
3279 case REQ_SEARCH_BACK:
3280 search_view(view, request);
3281 break;
3283 case REQ_FIND_NEXT:
3284 case REQ_FIND_PREV:
3285 find_next(view, request);
3286 break;
3288 case REQ_STOP_LOADING:
3289 for (i = 0; i < ARRAY_SIZE(views); i++) {
3290 view = &views[i];
3291 if (view->pipe)
3292 report("Stopped loading the %s view", view->name),
3293 end_update(view, TRUE);
3294 }
3295 break;
3297 case REQ_SHOW_VERSION:
3298 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3299 return TRUE;
3301 case REQ_SCREEN_REDRAW:
3302 redraw_display(TRUE);
3303 break;
3305 case REQ_EDIT:
3306 report("Nothing to edit");
3307 break;
3309 case REQ_ENTER:
3310 report("Nothing to enter");
3311 break;
3313 case REQ_VIEW_CLOSE:
3314 /* XXX: Mark closed views by letting view->parent point to the
3315 * view itself. Parents to closed view should never be
3316 * followed. */
3317 if (view->parent &&
3318 view->parent->parent != view->parent) {
3319 maximize_view(view->parent);
3320 view->parent = view;
3321 break;
3322 }
3323 /* Fall-through */
3324 case REQ_QUIT:
3325 return FALSE;
3327 default:
3328 report("Unknown key, press 'h' for help");
3329 return TRUE;
3330 }
3332 return TRUE;
3333 }
3336 /*
3337 * View backend utilities
3338 */
3340 DEFINE_ALLOCATOR(realloc_authors, const char *, 256)
3342 /* Small author cache to reduce memory consumption. It uses binary
3343 * search to lookup or find place to position new entries. No entries
3344 * are ever freed. */
3345 static const char *
3346 get_author(const char *name)
3347 {
3348 static const char **authors;
3349 static size_t authors_size;
3350 int from = 0, to = authors_size - 1;
3352 while (from <= to) {
3353 size_t pos = (to + from) / 2;
3354 int cmp = strcmp(name, authors[pos]);
3356 if (!cmp)
3357 return authors[pos];
3359 if (cmp < 0)
3360 to = pos - 1;
3361 else
3362 from = pos + 1;
3363 }
3365 if (!realloc_authors(&authors, authors_size, 1))
3366 return NULL;
3367 name = strdup(name);
3368 if (!name)
3369 return NULL;
3371 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3372 authors[from] = name;
3373 authors_size++;
3375 return name;
3376 }
3378 static void
3379 parse_timezone(time_t *time, const char *zone)
3380 {
3381 long tz;
3383 tz = ('0' - zone[1]) * 60 * 60 * 10;
3384 tz += ('0' - zone[2]) * 60 * 60;
3385 tz += ('0' - zone[3]) * 60;
3386 tz += ('0' - zone[4]);
3388 if (zone[0] == '-')
3389 tz = -tz;
3391 *time -= tz;
3392 }
3394 /* Parse author lines where the name may be empty:
3395 * author <email@address.tld> 1138474660 +0100
3396 */
3397 static void
3398 parse_author_line(char *ident, const char **author, time_t *time)
3399 {
3400 char *nameend = strchr(ident, '<');
3401 char *emailend = strchr(ident, '>');
3403 if (nameend && emailend)
3404 *nameend = *emailend = 0;
3405 ident = chomp_string(ident);
3406 if (!*ident) {
3407 if (nameend)
3408 ident = chomp_string(nameend + 1);
3409 if (!*ident)
3410 ident = "Unknown";
3411 }
3413 *author = get_author(ident);
3415 /* Parse epoch and timezone */
3416 if (emailend && emailend[1] == ' ') {
3417 char *secs = emailend + 2;
3418 char *zone = strchr(secs, ' ');
3420 *time = (time_t) atol(secs);
3422 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3423 parse_timezone(time, zone + 1);
3424 }
3425 }
3427 static enum input_status
3428 select_commit_parent_handler(void *data, char *buf, int c)
3429 {
3430 size_t parents = *(size_t *) data;
3431 int parent = 0;
3433 if (!isdigit(c))
3434 return INPUT_SKIP;
3436 if (*buf)
3437 parent = atoi(buf) * 10;
3438 parent += c - '0';
3440 if (parent > parents)
3441 return INPUT_SKIP;
3442 return INPUT_OK;
3443 }
3445 static bool
3446 select_commit_parent(const char *id, char rev[SIZEOF_REV], const char *path)
3447 {
3448 char buf[SIZEOF_STR * 4];
3449 const char *revlist_argv[] = {
3450 "git", "rev-list", "-1", "--parents", id, "--", path, NULL
3451 };
3452 int parents;
3454 if (!run_io_buf(revlist_argv, buf, sizeof(buf)) ||
3455 (parents = (strlen(buf) / 40) - 1) < 0) {
3456 report("Failed to get parent information");
3457 return FALSE;
3459 } else if (parents == 0) {
3460 if (path)
3461 report("Path '%s' does not exist in the parent", path);
3462 else
3463 report("The selected commit has no parents");
3464 return FALSE;
3465 }
3467 if (parents > 1) {
3468 char prompt[SIZEOF_STR];
3469 char *result;
3471 if (!string_format(prompt, "Which parent? [1..%d] ", parents))
3472 return FALSE;
3473 result = prompt_input(prompt, select_commit_parent_handler, &parents);
3474 if (!result)
3475 return FALSE;
3476 parents = atoi(result);
3477 }
3479 string_copy_rev(rev, &buf[41 * parents]);
3480 return TRUE;
3481 }
3483 /*
3484 * Pager backend
3485 */
3487 static bool
3488 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3489 {
3490 char text[SIZEOF_STR];
3492 if (opt_line_number && draw_lineno(view, lineno))
3493 return TRUE;
3495 string_expand(text, sizeof(text), line->data, opt_tab_size);
3496 draw_text(view, line->type, text, TRUE);
3497 return TRUE;
3498 }
3500 static bool
3501 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3502 {
3503 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3504 char ref[SIZEOF_STR];
3506 if (!run_io_buf(describe_argv, ref, sizeof(ref)) || !*ref)
3507 return TRUE;
3509 /* This is the only fatal call, since it can "corrupt" the buffer. */
3510 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3511 return FALSE;
3513 return TRUE;
3514 }
3516 static void
3517 add_pager_refs(struct view *view, struct line *line)
3518 {
3519 char buf[SIZEOF_STR];
3520 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3521 struct ref **refs;
3522 size_t bufpos = 0, refpos = 0;
3523 const char *sep = "Refs: ";
3524 bool is_tag = FALSE;
3526 assert(line->type == LINE_COMMIT);
3528 refs = get_refs(commit_id);
3529 if (!refs) {
3530 if (view == VIEW(REQ_VIEW_DIFF))
3531 goto try_add_describe_ref;
3532 return;
3533 }
3535 do {
3536 struct ref *ref = refs[refpos];
3537 const char *fmt = ref->tag ? "%s[%s]" :
3538 ref->remote ? "%s<%s>" : "%s%s";
3540 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3541 return;
3542 sep = ", ";
3543 if (ref->tag)
3544 is_tag = TRUE;
3545 } while (refs[refpos++]->next);
3547 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3548 try_add_describe_ref:
3549 /* Add <tag>-g<commit_id> "fake" reference. */
3550 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3551 return;
3552 }
3554 if (bufpos == 0)
3555 return;
3557 add_line_text(view, buf, LINE_PP_REFS);
3558 }
3560 static bool
3561 pager_read(struct view *view, char *data)
3562 {
3563 struct line *line;
3565 if (!data)
3566 return TRUE;
3568 line = add_line_text(view, data, get_line_type(data));
3569 if (!line)
3570 return FALSE;
3572 if (line->type == LINE_COMMIT &&
3573 (view == VIEW(REQ_VIEW_DIFF) ||
3574 view == VIEW(REQ_VIEW_LOG)))
3575 add_pager_refs(view, line);
3577 return TRUE;
3578 }
3580 static enum request
3581 pager_request(struct view *view, enum request request, struct line *line)
3582 {
3583 int split = 0;
3585 if (request != REQ_ENTER)
3586 return request;
3588 if (line->type == LINE_COMMIT &&
3589 (view == VIEW(REQ_VIEW_LOG) ||
3590 view == VIEW(REQ_VIEW_PAGER))) {
3591 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3592 split = 1;
3593 }
3595 /* Always scroll the view even if it was split. That way
3596 * you can use Enter to scroll through the log view and
3597 * split open each commit diff. */
3598 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3600 /* FIXME: A minor workaround. Scrolling the view will call report("")
3601 * but if we are scrolling a non-current view this won't properly
3602 * update the view title. */
3603 if (split)
3604 update_view_title(view);
3606 return REQ_NONE;
3607 }
3609 static bool
3610 pager_grep(struct view *view, struct line *line)
3611 {
3612 const char *text[] = { line->data, NULL };
3614 return grep_text(view, text);
3615 }
3617 static void
3618 pager_select(struct view *view, struct line *line)
3619 {
3620 if (line->type == LINE_COMMIT) {
3621 char *text = (char *)line->data + STRING_SIZE("commit ");
3623 if (view != VIEW(REQ_VIEW_PAGER))
3624 string_copy_rev(view->ref, text);
3625 string_copy_rev(ref_commit, text);
3626 }
3627 }
3629 static struct view_ops pager_ops = {
3630 "line",
3631 NULL,
3632 NULL,
3633 pager_read,
3634 pager_draw,
3635 pager_request,
3636 pager_grep,
3637 pager_select,
3638 };
3640 static const char *log_argv[SIZEOF_ARG] = {
3641 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3642 };
3644 static enum request
3645 log_request(struct view *view, enum request request, struct line *line)
3646 {
3647 switch (request) {
3648 case REQ_REFRESH:
3649 load_refs();
3650 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3651 return REQ_NONE;
3652 default:
3653 return pager_request(view, request, line);
3654 }
3655 }
3657 static struct view_ops log_ops = {
3658 "line",
3659 log_argv,
3660 NULL,
3661 pager_read,
3662 pager_draw,
3663 log_request,
3664 pager_grep,
3665 pager_select,
3666 };
3668 static const char *diff_argv[SIZEOF_ARG] = {
3669 "git", "show", "--pretty=fuller", "--no-color", "--root",
3670 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3671 };
3673 static struct view_ops diff_ops = {
3674 "line",
3675 diff_argv,
3676 NULL,
3677 pager_read,
3678 pager_draw,
3679 pager_request,
3680 pager_grep,
3681 pager_select,
3682 };
3684 /*
3685 * Help backend
3686 */
3688 static bool
3689 help_open(struct view *view)
3690 {
3691 char buf[SIZEOF_STR];
3692 size_t bufpos;
3693 int i;
3695 if (view->lines > 0)
3696 return TRUE;
3698 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3700 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3701 const char *key;
3703 if (req_info[i].request == REQ_NONE)
3704 continue;
3706 if (!req_info[i].request) {
3707 add_line_text(view, "", LINE_DEFAULT);
3708 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3709 continue;
3710 }
3712 key = get_key(req_info[i].request);
3713 if (!*key)
3714 key = "(no key defined)";
3716 for (bufpos = 0; bufpos <= req_info[i].namelen; bufpos++) {
3717 buf[bufpos] = tolower(req_info[i].name[bufpos]);
3718 if (buf[bufpos] == '_')
3719 buf[bufpos] = '-';
3720 }
3722 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s",
3723 key, buf, req_info[i].help);
3724 }
3726 if (run_requests) {
3727 add_line_text(view, "", LINE_DEFAULT);
3728 add_line_text(view, "External commands:", LINE_DEFAULT);
3729 }
3731 for (i = 0; i < run_requests; i++) {
3732 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3733 const char *key;
3734 int argc;
3736 if (!req)
3737 continue;
3739 key = get_key_name(req->key);
3740 if (!*key)
3741 key = "(no key defined)";
3743 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3744 if (!string_format_from(buf, &bufpos, "%s%s",
3745 argc ? " " : "", req->argv[argc]))
3746 return REQ_NONE;
3748 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3749 keymap_table[req->keymap].name, key, buf);
3750 }
3752 return TRUE;
3753 }
3755 static struct view_ops help_ops = {
3756 "line",
3757 NULL,
3758 help_open,
3759 NULL,
3760 pager_draw,
3761 pager_request,
3762 pager_grep,
3763 pager_select,
3764 };
3767 /*
3768 * Tree backend
3769 */
3771 struct tree_stack_entry {
3772 struct tree_stack_entry *prev; /* Entry below this in the stack */
3773 unsigned long lineno; /* Line number to restore */
3774 char *name; /* Position of name in opt_path */
3775 };
3777 /* The top of the path stack. */
3778 static struct tree_stack_entry *tree_stack = NULL;
3779 unsigned long tree_lineno = 0;
3781 static void
3782 pop_tree_stack_entry(void)
3783 {
3784 struct tree_stack_entry *entry = tree_stack;
3786 tree_lineno = entry->lineno;
3787 entry->name[0] = 0;
3788 tree_stack = entry->prev;
3789 free(entry);
3790 }
3792 static void
3793 push_tree_stack_entry(const char *name, unsigned long lineno)
3794 {
3795 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3796 size_t pathlen = strlen(opt_path);
3798 if (!entry)
3799 return;
3801 entry->prev = tree_stack;
3802 entry->name = opt_path + pathlen;
3803 tree_stack = entry;
3805 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3806 pop_tree_stack_entry();
3807 return;
3808 }
3810 /* Move the current line to the first tree entry. */
3811 tree_lineno = 1;
3812 entry->lineno = lineno;
3813 }
3815 /* Parse output from git-ls-tree(1):
3816 *
3817 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3818 */
3820 #define SIZEOF_TREE_ATTR \
3821 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3823 #define SIZEOF_TREE_MODE \
3824 STRING_SIZE("100644 ")
3826 #define TREE_ID_OFFSET \
3827 STRING_SIZE("100644 blob ")
3829 struct tree_entry {
3830 char id[SIZEOF_REV];
3831 mode_t mode;
3832 time_t time; /* Date from the author ident. */
3833 const char *author; /* Author of the commit. */
3834 char name[1];
3835 };
3837 static const char *
3838 tree_path(struct line *line)
3839 {
3840 return ((struct tree_entry *) line->data)->name;
3841 }
3844 static int
3845 tree_compare_entry(struct line *line1, struct line *line2)
3846 {
3847 if (line1->type != line2->type)
3848 return line1->type == LINE_TREE_DIR ? -1 : 1;
3849 return strcmp(tree_path(line1), tree_path(line2));
3850 }
3852 static struct line *
3853 tree_entry(struct view *view, enum line_type type, const char *path,
3854 const char *mode, const char *id)
3855 {
3856 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3857 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3859 if (!entry || !line) {
3860 free(entry);
3861 return NULL;
3862 }
3864 strncpy(entry->name, path, strlen(path));
3865 if (mode)
3866 entry->mode = strtoul(mode, NULL, 8);
3867 if (id)
3868 string_copy_rev(entry->id, id);
3870 return line;
3871 }
3873 static bool
3874 tree_read_date(struct view *view, char *text, bool *read_date)
3875 {
3876 static const char *author_name;
3877 static time_t author_time;
3879 if (!text && *read_date) {
3880 *read_date = FALSE;
3881 return TRUE;
3883 } else if (!text) {
3884 char *path = *opt_path ? opt_path : ".";
3885 /* Find next entry to process */
3886 const char *log_file[] = {
3887 "git", "log", "--no-color", "--pretty=raw",
3888 "--cc", "--raw", view->id, "--", path, NULL
3889 };
3890 struct io io = {};
3892 if (!view->lines) {
3893 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3894 report("Tree is empty");
3895 return TRUE;
3896 }
3898 if (!run_io_rd(&io, log_file, FORMAT_NONE)) {
3899 report("Failed to load tree data");
3900 return TRUE;
3901 }
3903 done_io(view->pipe);
3904 view->io = io;
3905 *read_date = TRUE;
3906 return FALSE;
3908 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3909 parse_author_line(text + STRING_SIZE("author "),
3910 &author_name, &author_time);
3912 } else if (*text == ':') {
3913 char *pos;
3914 size_t annotated = 1;
3915 size_t i;
3917 pos = strchr(text, '\t');
3918 if (!pos)
3919 return TRUE;
3920 text = pos + 1;
3921 if (*opt_prefix && !strncmp(text, opt_prefix, strlen(opt_prefix)))
3922 text += strlen(opt_prefix);
3923 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3924 text += strlen(opt_path);
3925 pos = strchr(text, '/');
3926 if (pos)
3927 *pos = 0;
3929 for (i = 1; i < view->lines; i++) {
3930 struct line *line = &view->line[i];
3931 struct tree_entry *entry = line->data;
3933 annotated += !!entry->author;
3934 if (entry->author || strcmp(entry->name, text))
3935 continue;
3937 entry->author = author_name;
3938 entry->time = author_time;
3939 line->dirty = 1;
3940 break;
3941 }
3943 if (annotated == view->lines)
3944 kill_io(view->pipe);
3945 }
3946 return TRUE;
3947 }
3949 static bool
3950 tree_read(struct view *view, char *text)
3951 {
3952 static bool read_date = FALSE;
3953 struct tree_entry *data;
3954 struct line *entry, *line;
3955 enum line_type type;
3956 size_t textlen = text ? strlen(text) : 0;
3957 char *path = text + SIZEOF_TREE_ATTR;
3959 if (read_date || !text)
3960 return tree_read_date(view, text, &read_date);
3962 if (textlen <= SIZEOF_TREE_ATTR)
3963 return FALSE;
3964 if (view->lines == 0 &&
3965 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3966 return FALSE;
3968 /* Strip the path part ... */
3969 if (*opt_path) {
3970 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3971 size_t striplen = strlen(opt_path);
3973 if (pathlen > striplen)
3974 memmove(path, path + striplen,
3975 pathlen - striplen + 1);
3977 /* Insert "link" to parent directory. */
3978 if (view->lines == 1 &&
3979 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3980 return FALSE;
3981 }
3983 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3984 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3985 if (!entry)
3986 return FALSE;
3987 data = entry->data;
3989 /* Skip "Directory ..." and ".." line. */
3990 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3991 if (tree_compare_entry(line, entry) <= 0)
3992 continue;
3994 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3996 line->data = data;
3997 line->type = type;
3998 for (; line <= entry; line++)
3999 line->dirty = line->cleareol = 1;
4000 return TRUE;
4001 }
4003 if (tree_lineno > view->lineno) {
4004 view->lineno = tree_lineno;
4005 tree_lineno = 0;
4006 }
4008 return TRUE;
4009 }
4011 static bool
4012 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4013 {
4014 struct tree_entry *entry = line->data;
4016 if (line->type == LINE_TREE_HEAD) {
4017 if (draw_text(view, line->type, "Directory path /", TRUE))
4018 return TRUE;
4019 } else {
4020 if (draw_mode(view, entry->mode))
4021 return TRUE;
4023 if (opt_author && draw_author(view, entry->author))
4024 return TRUE;
4026 if (opt_date && draw_date(view, entry->author ? &entry->time : NULL))
4027 return TRUE;
4028 }
4029 if (draw_text(view, line->type, entry->name, TRUE))
4030 return TRUE;
4031 return TRUE;
4032 }
4034 static void
4035 open_blob_editor()
4036 {
4037 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4038 int fd = mkstemp(file);
4040 if (fd == -1)
4041 report("Failed to create temporary file");
4042 else if (!run_io_append(blob_ops.argv, FORMAT_ALL, fd))
4043 report("Failed to save blob data to file");
4044 else
4045 open_editor(FALSE, file);
4046 if (fd != -1)
4047 unlink(file);
4048 }
4050 static enum request
4051 tree_request(struct view *view, enum request request, struct line *line)
4052 {
4053 enum open_flags flags;
4055 switch (request) {
4056 case REQ_VIEW_BLAME:
4057 if (line->type != LINE_TREE_FILE) {
4058 report("Blame only supported for files");
4059 return REQ_NONE;
4060 }
4062 string_copy(opt_ref, view->vid);
4063 return request;
4065 case REQ_EDIT:
4066 if (line->type != LINE_TREE_FILE) {
4067 report("Edit only supported for files");
4068 } else if (!is_head_commit(view->vid)) {
4069 open_blob_editor();
4070 } else {
4071 open_editor(TRUE, opt_file);
4072 }
4073 return REQ_NONE;
4075 case REQ_PARENT:
4076 if (!*opt_path) {
4077 /* quit view if at top of tree */
4078 return REQ_VIEW_CLOSE;
4079 }
4080 /* fake 'cd ..' */
4081 line = &view->line[1];
4082 break;
4084 case REQ_ENTER:
4085 break;
4087 default:
4088 return request;
4089 }
4091 /* Cleanup the stack if the tree view is at a different tree. */
4092 while (!*opt_path && tree_stack)
4093 pop_tree_stack_entry();
4095 switch (line->type) {
4096 case LINE_TREE_DIR:
4097 /* Depending on whether it is a subdirectory or parent link
4098 * mangle the path buffer. */
4099 if (line == &view->line[1] && *opt_path) {
4100 pop_tree_stack_entry();
4102 } else {
4103 const char *basename = tree_path(line);
4105 push_tree_stack_entry(basename, view->lineno);
4106 }
4108 /* Trees and subtrees share the same ID, so they are not not
4109 * unique like blobs. */
4110 flags = OPEN_RELOAD;
4111 request = REQ_VIEW_TREE;
4112 break;
4114 case LINE_TREE_FILE:
4115 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4116 request = REQ_VIEW_BLOB;
4117 break;
4119 default:
4120 return REQ_NONE;
4121 }
4123 open_view(view, request, flags);
4124 if (request == REQ_VIEW_TREE)
4125 view->lineno = tree_lineno;
4127 return REQ_NONE;
4128 }
4130 static bool
4131 tree_grep(struct view *view, struct line *line)
4132 {
4133 struct tree_entry *entry = line->data;
4134 const char *text[] = {
4135 entry->name,
4136 opt_author ? entry->author : "",
4137 opt_date ? mkdate(&entry->time) : "",
4138 NULL
4139 };
4141 return grep_text(view, text);
4142 }
4144 static void
4145 tree_select(struct view *view, struct line *line)
4146 {
4147 struct tree_entry *entry = line->data;
4149 if (line->type == LINE_TREE_FILE) {
4150 string_copy_rev(ref_blob, entry->id);
4151 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4153 } else if (line->type != LINE_TREE_DIR) {
4154 return;
4155 }
4157 string_copy_rev(view->ref, entry->id);
4158 }
4160 static const char *tree_argv[SIZEOF_ARG] = {
4161 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4162 };
4164 static struct view_ops tree_ops = {
4165 "file",
4166 tree_argv,
4167 NULL,
4168 tree_read,
4169 tree_draw,
4170 tree_request,
4171 tree_grep,
4172 tree_select,
4173 };
4175 static bool
4176 blob_read(struct view *view, char *line)
4177 {
4178 if (!line)
4179 return TRUE;
4180 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4181 }
4183 static enum request
4184 blob_request(struct view *view, enum request request, struct line *line)
4185 {
4186 switch (request) {
4187 case REQ_EDIT:
4188 open_blob_editor();
4189 return REQ_NONE;
4190 default:
4191 return pager_request(view, request, line);
4192 }
4193 }
4195 static const char *blob_argv[SIZEOF_ARG] = {
4196 "git", "cat-file", "blob", "%(blob)", NULL
4197 };
4199 static struct view_ops blob_ops = {
4200 "line",
4201 blob_argv,
4202 NULL,
4203 blob_read,
4204 pager_draw,
4205 blob_request,
4206 pager_grep,
4207 pager_select,
4208 };
4210 /*
4211 * Blame backend
4212 *
4213 * Loading the blame view is a two phase job:
4214 *
4215 * 1. File content is read either using opt_file from the
4216 * filesystem or using git-cat-file.
4217 * 2. Then blame information is incrementally added by
4218 * reading output from git-blame.
4219 */
4221 static const char *blame_head_argv[] = {
4222 "git", "blame", "--incremental", "--", "%(file)", NULL
4223 };
4225 static const char *blame_ref_argv[] = {
4226 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4227 };
4229 static const char *blame_cat_file_argv[] = {
4230 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4231 };
4233 struct blame_commit {
4234 char id[SIZEOF_REV]; /* SHA1 ID. */
4235 char title[128]; /* First line of the commit message. */
4236 const char *author; /* Author of the commit. */
4237 time_t time; /* Date from the author ident. */
4238 char filename[128]; /* Name of file. */
4239 bool has_previous; /* Was a "previous" line detected. */
4240 };
4242 struct blame {
4243 struct blame_commit *commit;
4244 unsigned long lineno;
4245 char text[1];
4246 };
4248 static bool
4249 blame_open(struct view *view)
4250 {
4251 if (*opt_ref || !io_open(&view->io, opt_file)) {
4252 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
4253 return FALSE;
4254 }
4256 setup_update(view, opt_file);
4257 string_format(view->ref, "%s ...", opt_file);
4259 return TRUE;
4260 }
4262 static struct blame_commit *
4263 get_blame_commit(struct view *view, const char *id)
4264 {
4265 size_t i;
4267 for (i = 0; i < view->lines; i++) {
4268 struct blame *blame = view->line[i].data;
4270 if (!blame->commit)
4271 continue;
4273 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4274 return blame->commit;
4275 }
4277 {
4278 struct blame_commit *commit = calloc(1, sizeof(*commit));
4280 if (commit)
4281 string_ncopy(commit->id, id, SIZEOF_REV);
4282 return commit;
4283 }
4284 }
4286 static bool
4287 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4288 {
4289 const char *pos = *posref;
4291 *posref = NULL;
4292 pos = strchr(pos + 1, ' ');
4293 if (!pos || !isdigit(pos[1]))
4294 return FALSE;
4295 *number = atoi(pos + 1);
4296 if (*number < min || *number > max)
4297 return FALSE;
4299 *posref = pos;
4300 return TRUE;
4301 }
4303 static struct blame_commit *
4304 parse_blame_commit(struct view *view, const char *text, int *blamed)
4305 {
4306 struct blame_commit *commit;
4307 struct blame *blame;
4308 const char *pos = text + SIZEOF_REV - 2;
4309 size_t orig_lineno = 0;
4310 size_t lineno;
4311 size_t group;
4313 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4314 return NULL;
4316 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4317 !parse_number(&pos, &lineno, 1, view->lines) ||
4318 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4319 return NULL;
4321 commit = get_blame_commit(view, text);
4322 if (!commit)
4323 return NULL;
4325 *blamed += group;
4326 while (group--) {
4327 struct line *line = &view->line[lineno + group - 1];
4329 blame = line->data;
4330 blame->commit = commit;
4331 blame->lineno = orig_lineno + group - 1;
4332 line->dirty = 1;
4333 }
4335 return commit;
4336 }
4338 static bool
4339 blame_read_file(struct view *view, const char *line, bool *read_file)
4340 {
4341 if (!line) {
4342 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
4343 struct io io = {};
4345 if (view->lines == 0 && !view->parent)
4346 die("No blame exist for %s", view->vid);
4348 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
4349 report("Failed to load blame data");
4350 return TRUE;
4351 }
4353 done_io(view->pipe);
4354 view->io = io;
4355 *read_file = FALSE;
4356 return FALSE;
4358 } else {
4359 size_t linelen = strlen(line);
4360 struct blame *blame = malloc(sizeof(*blame) + linelen);
4362 if (!blame)
4363 return FALSE;
4365 blame->commit = NULL;
4366 strncpy(blame->text, line, linelen);
4367 blame->text[linelen] = 0;
4368 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4369 }
4370 }
4372 static bool
4373 match_blame_header(const char *name, char **line)
4374 {
4375 size_t namelen = strlen(name);
4376 bool matched = !strncmp(name, *line, namelen);
4378 if (matched)
4379 *line += namelen;
4381 return matched;
4382 }
4384 static bool
4385 blame_read(struct view *view, char *line)
4386 {
4387 static struct blame_commit *commit = NULL;
4388 static int blamed = 0;
4389 static bool read_file = TRUE;
4391 if (read_file)
4392 return blame_read_file(view, line, &read_file);
4394 if (!line) {
4395 /* Reset all! */
4396 commit = NULL;
4397 blamed = 0;
4398 read_file = TRUE;
4399 string_format(view->ref, "%s", view->vid);
4400 if (view_is_displayed(view)) {
4401 update_view_title(view);
4402 redraw_view_from(view, 0);
4403 }
4404 return TRUE;
4405 }
4407 if (!commit) {
4408 commit = parse_blame_commit(view, line, &blamed);
4409 string_format(view->ref, "%s %2d%%", view->vid,
4410 view->lines ? blamed * 100 / view->lines : 0);
4412 } else if (match_blame_header("author ", &line)) {
4413 commit->author = get_author(line);
4415 } else if (match_blame_header("author-time ", &line)) {
4416 commit->time = (time_t) atol(line);
4418 } else if (match_blame_header("author-tz ", &line)) {
4419 parse_timezone(&commit->time, line);
4421 } else if (match_blame_header("summary ", &line)) {
4422 string_ncopy(commit->title, line, strlen(line));
4424 } else if (match_blame_header("previous ", &line)) {
4425 commit->has_previous = TRUE;
4427 } else if (match_blame_header("filename ", &line)) {
4428 string_ncopy(commit->filename, line, strlen(line));
4429 commit = NULL;
4430 }
4432 return TRUE;
4433 }
4435 static bool
4436 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4437 {
4438 struct blame *blame = line->data;
4439 time_t *time = NULL;
4440 const char *id = NULL, *author = NULL;
4441 char text[SIZEOF_STR];
4443 if (blame->commit && *blame->commit->filename) {
4444 id = blame->commit->id;
4445 author = blame->commit->author;
4446 time = &blame->commit->time;
4447 }
4449 if (opt_date && draw_date(view, time))
4450 return TRUE;
4452 if (opt_author && draw_author(view, author))
4453 return TRUE;
4455 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4456 return TRUE;
4458 if (draw_lineno(view, lineno))
4459 return TRUE;
4461 string_expand(text, sizeof(text), blame->text, opt_tab_size);
4462 draw_text(view, LINE_DEFAULT, text, TRUE);
4463 return TRUE;
4464 }
4466 static bool
4467 check_blame_commit(struct blame *blame, bool check_null_id)
4468 {
4469 if (!blame->commit)
4470 report("Commit data not loaded yet");
4471 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4472 report("No commit exist for the selected line");
4473 else
4474 return TRUE;
4475 return FALSE;
4476 }
4478 static void
4479 setup_blame_parent_line(struct view *view, struct blame *blame)
4480 {
4481 const char *diff_tree_argv[] = {
4482 "git", "diff-tree", "-U0", blame->commit->id,
4483 "--", blame->commit->filename, NULL
4484 };
4485 struct io io = {};
4486 int parent_lineno = -1;
4487 int blamed_lineno = -1;
4488 char *line;
4490 if (!run_io(&io, diff_tree_argv, NULL, IO_RD))
4491 return;
4493 while ((line = io_get(&io, '\n', TRUE))) {
4494 if (*line == '@') {
4495 char *pos = strchr(line, '+');
4497 parent_lineno = atoi(line + 4);
4498 if (pos)
4499 blamed_lineno = atoi(pos + 1);
4501 } else if (*line == '+' && parent_lineno != -1) {
4502 if (blame->lineno == blamed_lineno - 1 &&
4503 !strcmp(blame->text, line + 1)) {
4504 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4505 break;
4506 }
4507 blamed_lineno++;
4508 }
4509 }
4511 done_io(&io);
4512 }
4514 static enum request
4515 blame_request(struct view *view, enum request request, struct line *line)
4516 {
4517 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4518 struct blame *blame = line->data;
4520 switch (request) {
4521 case REQ_VIEW_BLAME:
4522 if (check_blame_commit(blame, TRUE)) {
4523 string_copy(opt_ref, blame->commit->id);
4524 string_copy(opt_file, blame->commit->filename);
4525 if (blame->lineno)
4526 view->lineno = blame->lineno;
4527 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4528 }
4529 break;
4531 case REQ_PARENT:
4532 if (check_blame_commit(blame, TRUE) &&
4533 select_commit_parent(blame->commit->id, opt_ref,
4534 blame->commit->filename)) {
4535 string_copy(opt_file, blame->commit->filename);
4536 setup_blame_parent_line(view, blame);
4537 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4538 }
4539 break;
4541 case REQ_ENTER:
4542 if (!check_blame_commit(blame, FALSE))
4543 break;
4545 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4546 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4547 break;
4549 if (!strcmp(blame->commit->id, NULL_ID)) {
4550 struct view *diff = VIEW(REQ_VIEW_DIFF);
4551 const char *diff_index_argv[] = {
4552 "git", "diff-index", "--root", "--patch-with-stat",
4553 "-C", "-M", "HEAD", "--", view->vid, NULL
4554 };
4556 if (!blame->commit->has_previous) {
4557 diff_index_argv[1] = "diff";
4558 diff_index_argv[2] = "--no-color";
4559 diff_index_argv[6] = "--";
4560 diff_index_argv[7] = "/dev/null";
4561 }
4563 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4564 report("Failed to allocate diff command");
4565 break;
4566 }
4567 flags |= OPEN_PREPARED;
4568 }
4570 open_view(view, REQ_VIEW_DIFF, flags);
4571 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4572 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4573 break;
4575 default:
4576 return request;
4577 }
4579 return REQ_NONE;
4580 }
4582 static bool
4583 blame_grep(struct view *view, struct line *line)
4584 {
4585 struct blame *blame = line->data;
4586 struct blame_commit *commit = blame->commit;
4587 const char *text[] = {
4588 blame->text,
4589 commit ? commit->title : "",
4590 commit ? commit->id : "",
4591 commit && opt_author ? commit->author : "",
4592 commit && opt_date ? mkdate(&commit->time) : "",
4593 NULL
4594 };
4596 return grep_text(view, text);
4597 }
4599 static void
4600 blame_select(struct view *view, struct line *line)
4601 {
4602 struct blame *blame = line->data;
4603 struct blame_commit *commit = blame->commit;
4605 if (!commit)
4606 return;
4608 if (!strcmp(commit->id, NULL_ID))
4609 string_ncopy(ref_commit, "HEAD", 4);
4610 else
4611 string_copy_rev(ref_commit, commit->id);
4612 }
4614 static struct view_ops blame_ops = {
4615 "line",
4616 NULL,
4617 blame_open,
4618 blame_read,
4619 blame_draw,
4620 blame_request,
4621 blame_grep,
4622 blame_select,
4623 };
4625 /*
4626 * Status backend
4627 */
4629 struct status {
4630 char status;
4631 struct {
4632 mode_t mode;
4633 char rev[SIZEOF_REV];
4634 char name[SIZEOF_STR];
4635 } old;
4636 struct {
4637 mode_t mode;
4638 char rev[SIZEOF_REV];
4639 char name[SIZEOF_STR];
4640 } new;
4641 };
4643 static char status_onbranch[SIZEOF_STR];
4644 static struct status stage_status;
4645 static enum line_type stage_line_type;
4646 static size_t stage_chunks;
4647 static int *stage_chunk;
4649 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4651 /* This should work even for the "On branch" line. */
4652 static inline bool
4653 status_has_none(struct view *view, struct line *line)
4654 {
4655 return line < view->line + view->lines && !line[1].data;
4656 }
4658 /* Get fields from the diff line:
4659 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4660 */
4661 static inline bool
4662 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4663 {
4664 const char *old_mode = buf + 1;
4665 const char *new_mode = buf + 8;
4666 const char *old_rev = buf + 15;
4667 const char *new_rev = buf + 56;
4668 const char *status = buf + 97;
4670 if (bufsize < 98 ||
4671 old_mode[-1] != ':' ||
4672 new_mode[-1] != ' ' ||
4673 old_rev[-1] != ' ' ||
4674 new_rev[-1] != ' ' ||
4675 status[-1] != ' ')
4676 return FALSE;
4678 file->status = *status;
4680 string_copy_rev(file->old.rev, old_rev);
4681 string_copy_rev(file->new.rev, new_rev);
4683 file->old.mode = strtoul(old_mode, NULL, 8);
4684 file->new.mode = strtoul(new_mode, NULL, 8);
4686 file->old.name[0] = file->new.name[0] = 0;
4688 return TRUE;
4689 }
4691 static bool
4692 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4693 {
4694 struct status *unmerged = NULL;
4695 char *buf;
4696 struct io io = {};
4698 if (!run_io(&io, argv, NULL, IO_RD))
4699 return FALSE;
4701 add_line_data(view, NULL, type);
4703 while ((buf = io_get(&io, 0, TRUE))) {
4704 struct status *file = unmerged;
4706 if (!file) {
4707 file = calloc(1, sizeof(*file));
4708 if (!file || !add_line_data(view, file, type))
4709 goto error_out;
4710 }
4712 /* Parse diff info part. */
4713 if (status) {
4714 file->status = status;
4715 if (status == 'A')
4716 string_copy(file->old.rev, NULL_ID);
4718 } else if (!file->status || file == unmerged) {
4719 if (!status_get_diff(file, buf, strlen(buf)))
4720 goto error_out;
4722 buf = io_get(&io, 0, TRUE);
4723 if (!buf)
4724 break;
4726 /* Collapse all modified entries that follow an
4727 * associated unmerged entry. */
4728 if (unmerged == file) {
4729 unmerged->status = 'U';
4730 unmerged = NULL;
4731 } else if (file->status == 'U') {
4732 unmerged = file;
4733 }
4734 }
4736 /* Grab the old name for rename/copy. */
4737 if (!*file->old.name &&
4738 (file->status == 'R' || file->status == 'C')) {
4739 string_ncopy(file->old.name, buf, strlen(buf));
4741 buf = io_get(&io, 0, TRUE);
4742 if (!buf)
4743 break;
4744 }
4746 /* git-ls-files just delivers a NUL separated list of
4747 * file names similar to the second half of the
4748 * git-diff-* output. */
4749 string_ncopy(file->new.name, buf, strlen(buf));
4750 if (!*file->old.name)
4751 string_copy(file->old.name, file->new.name);
4752 file = NULL;
4753 }
4755 if (io_error(&io)) {
4756 error_out:
4757 done_io(&io);
4758 return FALSE;
4759 }
4761 if (!view->line[view->lines - 1].data)
4762 add_line_data(view, NULL, LINE_STAT_NONE);
4764 done_io(&io);
4765 return TRUE;
4766 }
4768 /* Don't show unmerged entries in the staged section. */
4769 static const char *status_diff_index_argv[] = {
4770 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4771 "--cached", "-M", "HEAD", NULL
4772 };
4774 static const char *status_diff_files_argv[] = {
4775 "git", "diff-files", "-z", NULL
4776 };
4778 static const char *status_list_other_argv[] = {
4779 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4780 };
4782 static const char *status_list_no_head_argv[] = {
4783 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4784 };
4786 static const char *update_index_argv[] = {
4787 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4788 };
4790 /* Restore the previous line number to stay in the context or select a
4791 * line with something that can be updated. */
4792 static void
4793 status_restore(struct view *view)
4794 {
4795 if (view->p_lineno >= view->lines)
4796 view->p_lineno = view->lines - 1;
4797 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4798 view->p_lineno++;
4799 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4800 view->p_lineno--;
4802 /* If the above fails, always skip the "On branch" line. */
4803 if (view->p_lineno < view->lines)
4804 view->lineno = view->p_lineno;
4805 else
4806 view->lineno = 1;
4808 if (view->lineno < view->offset)
4809 view->offset = view->lineno;
4810 else if (view->offset + view->height <= view->lineno)
4811 view->offset = view->lineno - view->height + 1;
4813 view->p_restore = FALSE;
4814 }
4816 static void
4817 status_update_onbranch(void)
4818 {
4819 static const char *paths[][2] = {
4820 { "rebase-apply/rebasing", "Rebasing" },
4821 { "rebase-apply/applying", "Applying mailbox" },
4822 { "rebase-apply/", "Rebasing mailbox" },
4823 { "rebase-merge/interactive", "Interactive rebase" },
4824 { "rebase-merge/", "Rebase merge" },
4825 { "MERGE_HEAD", "Merging" },
4826 { "BISECT_LOG", "Bisecting" },
4827 { "HEAD", "On branch" },
4828 };
4829 char buf[SIZEOF_STR];
4830 struct stat stat;
4831 int i;
4833 if (is_initial_commit()) {
4834 string_copy(status_onbranch, "Initial commit");
4835 return;
4836 }
4838 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4839 char *head = opt_head;
4841 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4842 lstat(buf, &stat) < 0)
4843 continue;
4845 if (!*opt_head) {
4846 struct io io = {};
4848 if (string_format(buf, "%s/rebase-merge/head-name", opt_git_dir) &&
4849 io_open(&io, buf) &&
4850 io_read_buf(&io, buf, sizeof(buf))) {
4851 head = buf;
4852 if (!prefixcmp(head, "refs/heads/"))
4853 head += STRING_SIZE("refs/heads/");
4854 }
4855 }
4857 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4858 string_copy(status_onbranch, opt_head);
4859 return;
4860 }
4862 string_copy(status_onbranch, "Not currently on any branch");
4863 }
4865 /* First parse staged info using git-diff-index(1), then parse unstaged
4866 * info using git-diff-files(1), and finally untracked files using
4867 * git-ls-files(1). */
4868 static bool
4869 status_open(struct view *view)
4870 {
4871 reset_view(view);
4873 add_line_data(view, NULL, LINE_STAT_HEAD);
4874 status_update_onbranch();
4876 run_io_bg(update_index_argv);
4878 if (is_initial_commit()) {
4879 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4880 return FALSE;
4881 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4882 return FALSE;
4883 }
4885 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4886 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4887 return FALSE;
4889 /* Restore the exact position or use the specialized restore
4890 * mode? */
4891 if (!view->p_restore)
4892 status_restore(view);
4893 return TRUE;
4894 }
4896 static bool
4897 status_draw(struct view *view, struct line *line, unsigned int lineno)
4898 {
4899 struct status *status = line->data;
4900 enum line_type type;
4901 const char *text;
4903 if (!status) {
4904 switch (line->type) {
4905 case LINE_STAT_STAGED:
4906 type = LINE_STAT_SECTION;
4907 text = "Changes to be committed:";
4908 break;
4910 case LINE_STAT_UNSTAGED:
4911 type = LINE_STAT_SECTION;
4912 text = "Changed but not updated:";
4913 break;
4915 case LINE_STAT_UNTRACKED:
4916 type = LINE_STAT_SECTION;
4917 text = "Untracked files:";
4918 break;
4920 case LINE_STAT_NONE:
4921 type = LINE_DEFAULT;
4922 text = " (no files)";
4923 break;
4925 case LINE_STAT_HEAD:
4926 type = LINE_STAT_HEAD;
4927 text = status_onbranch;
4928 break;
4930 default:
4931 return FALSE;
4932 }
4933 } else {
4934 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4936 buf[0] = status->status;
4937 if (draw_text(view, line->type, buf, TRUE))
4938 return TRUE;
4939 type = LINE_DEFAULT;
4940 text = status->new.name;
4941 }
4943 draw_text(view, type, text, TRUE);
4944 return TRUE;
4945 }
4947 static enum request
4948 status_load_error(struct view *view, struct view *stage, const char *path)
4949 {
4950 if (displayed_views() == 2 || display[current_view] != view)
4951 maximize_view(view);
4952 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
4953 return REQ_NONE;
4954 }
4956 static enum request
4957 status_enter(struct view *view, struct line *line)
4958 {
4959 struct status *status = line->data;
4960 const char *oldpath = status ? status->old.name : NULL;
4961 /* Diffs for unmerged entries are empty when passing the new
4962 * path, so leave it empty. */
4963 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4964 const char *info;
4965 enum open_flags split;
4966 struct view *stage = VIEW(REQ_VIEW_STAGE);
4968 if (line->type == LINE_STAT_NONE ||
4969 (!status && line[1].type == LINE_STAT_NONE)) {
4970 report("No file to diff");
4971 return REQ_NONE;
4972 }
4974 switch (line->type) {
4975 case LINE_STAT_STAGED:
4976 if (is_initial_commit()) {
4977 const char *no_head_diff_argv[] = {
4978 "git", "diff", "--no-color", "--patch-with-stat",
4979 "--", "/dev/null", newpath, NULL
4980 };
4982 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4983 return status_load_error(view, stage, newpath);
4984 } else {
4985 const char *index_show_argv[] = {
4986 "git", "diff-index", "--root", "--patch-with-stat",
4987 "-C", "-M", "--cached", "HEAD", "--",
4988 oldpath, newpath, NULL
4989 };
4991 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4992 return status_load_error(view, stage, newpath);
4993 }
4995 if (status)
4996 info = "Staged changes to %s";
4997 else
4998 info = "Staged changes";
4999 break;
5001 case LINE_STAT_UNSTAGED:
5002 {
5003 const char *files_show_argv[] = {
5004 "git", "diff-files", "--root", "--patch-with-stat",
5005 "-C", "-M", "--", oldpath, newpath, NULL
5006 };
5008 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
5009 return status_load_error(view, stage, newpath);
5010 if (status)
5011 info = "Unstaged changes to %s";
5012 else
5013 info = "Unstaged changes";
5014 break;
5015 }
5016 case LINE_STAT_UNTRACKED:
5017 if (!newpath) {
5018 report("No file to show");
5019 return REQ_NONE;
5020 }
5022 if (!suffixcmp(status->new.name, -1, "/")) {
5023 report("Cannot display a directory");
5024 return REQ_NONE;
5025 }
5027 if (!prepare_update_file(stage, newpath))
5028 return status_load_error(view, stage, newpath);
5029 info = "Untracked file %s";
5030 break;
5032 case LINE_STAT_HEAD:
5033 return REQ_NONE;
5035 default:
5036 die("line type %d not handled in switch", line->type);
5037 }
5039 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5040 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5041 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5042 if (status) {
5043 stage_status = *status;
5044 } else {
5045 memset(&stage_status, 0, sizeof(stage_status));
5046 }
5048 stage_line_type = line->type;
5049 stage_chunks = 0;
5050 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5051 }
5053 return REQ_NONE;
5054 }
5056 static bool
5057 status_exists(struct status *status, enum line_type type)
5058 {
5059 struct view *view = VIEW(REQ_VIEW_STATUS);
5060 unsigned long lineno;
5062 for (lineno = 0; lineno < view->lines; lineno++) {
5063 struct line *line = &view->line[lineno];
5064 struct status *pos = line->data;
5066 if (line->type != type)
5067 continue;
5068 if (!pos && (!status || !status->status) && line[1].data) {
5069 select_view_line(view, lineno);
5070 return TRUE;
5071 }
5072 if (pos && !strcmp(status->new.name, pos->new.name)) {
5073 select_view_line(view, lineno);
5074 return TRUE;
5075 }
5076 }
5078 return FALSE;
5079 }
5082 static bool
5083 status_update_prepare(struct io *io, enum line_type type)
5084 {
5085 const char *staged_argv[] = {
5086 "git", "update-index", "-z", "--index-info", NULL
5087 };
5088 const char *others_argv[] = {
5089 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5090 };
5092 switch (type) {
5093 case LINE_STAT_STAGED:
5094 return run_io(io, staged_argv, opt_cdup, IO_WR);
5096 case LINE_STAT_UNSTAGED:
5097 return run_io(io, others_argv, opt_cdup, IO_WR);
5099 case LINE_STAT_UNTRACKED:
5100 return run_io(io, others_argv, NULL, IO_WR);
5102 default:
5103 die("line type %d not handled in switch", type);
5104 return FALSE;
5105 }
5106 }
5108 static bool
5109 status_update_write(struct io *io, struct status *status, enum line_type type)
5110 {
5111 char buf[SIZEOF_STR];
5112 size_t bufsize = 0;
5114 switch (type) {
5115 case LINE_STAT_STAGED:
5116 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5117 status->old.mode,
5118 status->old.rev,
5119 status->old.name, 0))
5120 return FALSE;
5121 break;
5123 case LINE_STAT_UNSTAGED:
5124 case LINE_STAT_UNTRACKED:
5125 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5126 return FALSE;
5127 break;
5129 default:
5130 die("line type %d not handled in switch", type);
5131 }
5133 return io_write(io, buf, bufsize);
5134 }
5136 static bool
5137 status_update_file(struct status *status, enum line_type type)
5138 {
5139 struct io io = {};
5140 bool result;
5142 if (!status_update_prepare(&io, type))
5143 return FALSE;
5145 result = status_update_write(&io, status, type);
5146 return done_io(&io) && result;
5147 }
5149 static bool
5150 status_update_files(struct view *view, struct line *line)
5151 {
5152 char buf[sizeof(view->ref)];
5153 struct io io = {};
5154 bool result = TRUE;
5155 struct line *pos = view->line + view->lines;
5156 int files = 0;
5157 int file, done;
5158 int cursor_y, cursor_x;
5160 if (!status_update_prepare(&io, line->type))
5161 return FALSE;
5163 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5164 files++;
5166 string_copy(buf, view->ref);
5167 getsyx(cursor_y, cursor_x);
5168 for (file = 0, done = 5; result && file < files; line++, file++) {
5169 int almost_done = file * 100 / files;
5171 if (almost_done > done) {
5172 done = almost_done;
5173 string_format(view->ref, "updating file %u of %u (%d%% done)",
5174 file, files, done);
5175 update_view_title(view);
5176 setsyx(cursor_y, cursor_x);
5177 doupdate();
5178 }
5179 result = status_update_write(&io, line->data, line->type);
5180 }
5181 string_copy(view->ref, buf);
5183 return done_io(&io) && result;
5184 }
5186 static bool
5187 status_update(struct view *view)
5188 {
5189 struct line *line = &view->line[view->lineno];
5191 assert(view->lines);
5193 if (!line->data) {
5194 /* This should work even for the "On branch" line. */
5195 if (line < view->line + view->lines && !line[1].data) {
5196 report("Nothing to update");
5197 return FALSE;
5198 }
5200 if (!status_update_files(view, line + 1)) {
5201 report("Failed to update file status");
5202 return FALSE;
5203 }
5205 } else if (!status_update_file(line->data, line->type)) {
5206 report("Failed to update file status");
5207 return FALSE;
5208 }
5210 return TRUE;
5211 }
5213 static bool
5214 status_revert(struct status *status, enum line_type type, bool has_none)
5215 {
5216 if (!status || type != LINE_STAT_UNSTAGED) {
5217 if (type == LINE_STAT_STAGED) {
5218 report("Cannot revert changes to staged files");
5219 } else if (type == LINE_STAT_UNTRACKED) {
5220 report("Cannot revert changes to untracked files");
5221 } else if (has_none) {
5222 report("Nothing to revert");
5223 } else {
5224 report("Cannot revert changes to multiple files");
5225 }
5226 return FALSE;
5228 } else {
5229 char mode[10] = "100644";
5230 const char *reset_argv[] = {
5231 "git", "update-index", "--cacheinfo", mode,
5232 status->old.rev, status->old.name, NULL
5233 };
5234 const char *checkout_argv[] = {
5235 "git", "checkout", "--", status->old.name, NULL
5236 };
5238 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
5239 return FALSE;
5240 string_format(mode, "%o", status->old.mode);
5241 return (status->status != 'U' || run_io_fg(reset_argv, opt_cdup)) &&
5242 run_io_fg(checkout_argv, opt_cdup);
5243 }
5244 }
5246 static enum request
5247 status_request(struct view *view, enum request request, struct line *line)
5248 {
5249 struct status *status = line->data;
5251 switch (request) {
5252 case REQ_STATUS_UPDATE:
5253 if (!status_update(view))
5254 return REQ_NONE;
5255 break;
5257 case REQ_STATUS_REVERT:
5258 if (!status_revert(status, line->type, status_has_none(view, line)))
5259 return REQ_NONE;
5260 break;
5262 case REQ_STATUS_MERGE:
5263 if (!status || status->status != 'U') {
5264 report("Merging only possible for files with unmerged status ('U').");
5265 return REQ_NONE;
5266 }
5267 open_mergetool(status->new.name);
5268 break;
5270 case REQ_EDIT:
5271 if (!status)
5272 return request;
5273 if (status->status == 'D') {
5274 report("File has been deleted.");
5275 return REQ_NONE;
5276 }
5278 open_editor(status->status != '?', status->new.name);
5279 break;
5281 case REQ_VIEW_BLAME:
5282 if (status) {
5283 string_copy(opt_file, status->new.name);
5284 opt_ref[0] = 0;
5285 }
5286 return request;
5288 case REQ_ENTER:
5289 /* After returning the status view has been split to
5290 * show the stage view. No further reloading is
5291 * necessary. */
5292 return status_enter(view, line);
5294 case REQ_REFRESH:
5295 /* Simply reload the view. */
5296 break;
5298 default:
5299 return request;
5300 }
5302 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5304 return REQ_NONE;
5305 }
5307 static void
5308 status_select(struct view *view, struct line *line)
5309 {
5310 struct status *status = line->data;
5311 char file[SIZEOF_STR] = "all files";
5312 const char *text;
5313 const char *key;
5315 if (status && !string_format(file, "'%s'", status->new.name))
5316 return;
5318 if (!status && line[1].type == LINE_STAT_NONE)
5319 line++;
5321 switch (line->type) {
5322 case LINE_STAT_STAGED:
5323 text = "Press %s to unstage %s for commit";
5324 break;
5326 case LINE_STAT_UNSTAGED:
5327 text = "Press %s to stage %s for commit";
5328 break;
5330 case LINE_STAT_UNTRACKED:
5331 text = "Press %s to stage %s for addition";
5332 break;
5334 case LINE_STAT_HEAD:
5335 case LINE_STAT_NONE:
5336 text = "Nothing to update";
5337 break;
5339 default:
5340 die("line type %d not handled in switch", line->type);
5341 }
5343 if (status && status->status == 'U') {
5344 text = "Press %s to resolve conflict in %s";
5345 key = get_key(REQ_STATUS_MERGE);
5347 } else {
5348 key = get_key(REQ_STATUS_UPDATE);
5349 }
5351 string_format(view->ref, text, key, file);
5352 }
5354 static bool
5355 status_grep(struct view *view, struct line *line)
5356 {
5357 struct status *status = line->data;
5359 if (status) {
5360 const char buf[2] = { status->status, 0 };
5361 const char *text[] = { status->new.name, buf, NULL };
5363 return grep_text(view, text);
5364 }
5366 return FALSE;
5367 }
5369 static struct view_ops status_ops = {
5370 "file",
5371 NULL,
5372 status_open,
5373 NULL,
5374 status_draw,
5375 status_request,
5376 status_grep,
5377 status_select,
5378 };
5381 static bool
5382 stage_diff_write(struct io *io, struct line *line, struct line *end)
5383 {
5384 while (line < end) {
5385 if (!io_write(io, line->data, strlen(line->data)) ||
5386 !io_write(io, "\n", 1))
5387 return FALSE;
5388 line++;
5389 if (line->type == LINE_DIFF_CHUNK ||
5390 line->type == LINE_DIFF_HEADER)
5391 break;
5392 }
5394 return TRUE;
5395 }
5397 static struct line *
5398 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5399 {
5400 for (; view->line < line; line--)
5401 if (line->type == type)
5402 return line;
5404 return NULL;
5405 }
5407 static bool
5408 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5409 {
5410 const char *apply_argv[SIZEOF_ARG] = {
5411 "git", "apply", "--whitespace=nowarn", NULL
5412 };
5413 struct line *diff_hdr;
5414 struct io io = {};
5415 int argc = 3;
5417 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5418 if (!diff_hdr)
5419 return FALSE;
5421 if (!revert)
5422 apply_argv[argc++] = "--cached";
5423 if (revert || stage_line_type == LINE_STAT_STAGED)
5424 apply_argv[argc++] = "-R";
5425 apply_argv[argc++] = "-";
5426 apply_argv[argc++] = NULL;
5427 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5428 return FALSE;
5430 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5431 !stage_diff_write(&io, chunk, view->line + view->lines))
5432 chunk = NULL;
5434 done_io(&io);
5435 run_io_bg(update_index_argv);
5437 return chunk ? TRUE : FALSE;
5438 }
5440 static bool
5441 stage_update(struct view *view, struct line *line)
5442 {
5443 struct line *chunk = NULL;
5445 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5446 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5448 if (chunk) {
5449 if (!stage_apply_chunk(view, chunk, FALSE)) {
5450 report("Failed to apply chunk");
5451 return FALSE;
5452 }
5454 } else if (!stage_status.status) {
5455 view = VIEW(REQ_VIEW_STATUS);
5457 for (line = view->line; line < view->line + view->lines; line++)
5458 if (line->type == stage_line_type)
5459 break;
5461 if (!status_update_files(view, line + 1)) {
5462 report("Failed to update files");
5463 return FALSE;
5464 }
5466 } else if (!status_update_file(&stage_status, stage_line_type)) {
5467 report("Failed to update file");
5468 return FALSE;
5469 }
5471 return TRUE;
5472 }
5474 static bool
5475 stage_revert(struct view *view, struct line *line)
5476 {
5477 struct line *chunk = NULL;
5479 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5480 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5482 if (chunk) {
5483 if (!prompt_yesno("Are you sure you want to revert changes?"))
5484 return FALSE;
5486 if (!stage_apply_chunk(view, chunk, TRUE)) {
5487 report("Failed to revert chunk");
5488 return FALSE;
5489 }
5490 return TRUE;
5492 } else {
5493 return status_revert(stage_status.status ? &stage_status : NULL,
5494 stage_line_type, FALSE);
5495 }
5496 }
5499 static void
5500 stage_next(struct view *view, struct line *line)
5501 {
5502 int i;
5504 if (!stage_chunks) {
5505 for (line = view->line; line < view->line + view->lines; line++) {
5506 if (line->type != LINE_DIFF_CHUNK)
5507 continue;
5509 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5510 report("Allocation failure");
5511 return;
5512 }
5514 stage_chunk[stage_chunks++] = line - view->line;
5515 }
5516 }
5518 for (i = 0; i < stage_chunks; i++) {
5519 if (stage_chunk[i] > view->lineno) {
5520 do_scroll_view(view, stage_chunk[i] - view->lineno);
5521 report("Chunk %d of %d", i + 1, stage_chunks);
5522 return;
5523 }
5524 }
5526 report("No next chunk found");
5527 }
5529 static enum request
5530 stage_request(struct view *view, enum request request, struct line *line)
5531 {
5532 switch (request) {
5533 case REQ_STATUS_UPDATE:
5534 if (!stage_update(view, line))
5535 return REQ_NONE;
5536 break;
5538 case REQ_STATUS_REVERT:
5539 if (!stage_revert(view, line))
5540 return REQ_NONE;
5541 break;
5543 case REQ_STAGE_NEXT:
5544 if (stage_line_type == LINE_STAT_UNTRACKED) {
5545 report("File is untracked; press %s to add",
5546 get_key(REQ_STATUS_UPDATE));
5547 return REQ_NONE;
5548 }
5549 stage_next(view, line);
5550 return REQ_NONE;
5552 case REQ_EDIT:
5553 if (!stage_status.new.name[0])
5554 return request;
5555 if (stage_status.status == 'D') {
5556 report("File has been deleted.");
5557 return REQ_NONE;
5558 }
5560 open_editor(stage_status.status != '?', stage_status.new.name);
5561 break;
5563 case REQ_REFRESH:
5564 /* Reload everything ... */
5565 break;
5567 case REQ_VIEW_BLAME:
5568 if (stage_status.new.name[0]) {
5569 string_copy(opt_file, stage_status.new.name);
5570 opt_ref[0] = 0;
5571 }
5572 return request;
5574 case REQ_ENTER:
5575 return pager_request(view, request, line);
5577 default:
5578 return request;
5579 }
5581 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5582 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5584 /* Check whether the staged entry still exists, and close the
5585 * stage view if it doesn't. */
5586 if (!status_exists(&stage_status, stage_line_type)) {
5587 status_restore(VIEW(REQ_VIEW_STATUS));
5588 return REQ_VIEW_CLOSE;
5589 }
5591 if (stage_line_type == LINE_STAT_UNTRACKED) {
5592 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5593 report("Cannot display a directory");
5594 return REQ_NONE;
5595 }
5597 if (!prepare_update_file(view, stage_status.new.name)) {
5598 report("Failed to open file: %s", strerror(errno));
5599 return REQ_NONE;
5600 }
5601 }
5602 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5604 return REQ_NONE;
5605 }
5607 static struct view_ops stage_ops = {
5608 "line",
5609 NULL,
5610 NULL,
5611 pager_read,
5612 pager_draw,
5613 stage_request,
5614 pager_grep,
5615 pager_select,
5616 };
5619 /*
5620 * Revision graph
5621 */
5623 struct commit {
5624 char id[SIZEOF_REV]; /* SHA1 ID. */
5625 char title[128]; /* First line of the commit message. */
5626 const char *author; /* Author of the commit. */
5627 time_t time; /* Date from the author ident. */
5628 struct ref **refs; /* Repository references. */
5629 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5630 size_t graph_size; /* The width of the graph array. */
5631 bool has_parents; /* Rewritten --parents seen. */
5632 };
5634 /* Size of rev graph with no "padding" columns */
5635 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5637 struct rev_graph {
5638 struct rev_graph *prev, *next, *parents;
5639 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5640 size_t size;
5641 struct commit *commit;
5642 size_t pos;
5643 unsigned int boundary:1;
5644 };
5646 /* Parents of the commit being visualized. */
5647 static struct rev_graph graph_parents[4];
5649 /* The current stack of revisions on the graph. */
5650 static struct rev_graph graph_stacks[4] = {
5651 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5652 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5653 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5654 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5655 };
5657 static inline bool
5658 graph_parent_is_merge(struct rev_graph *graph)
5659 {
5660 return graph->parents->size > 1;
5661 }
5663 static inline void
5664 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5665 {
5666 struct commit *commit = graph->commit;
5668 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5669 commit->graph[commit->graph_size++] = symbol;
5670 }
5672 static void
5673 clear_rev_graph(struct rev_graph *graph)
5674 {
5675 graph->boundary = 0;
5676 graph->size = graph->pos = 0;
5677 graph->commit = NULL;
5678 memset(graph->parents, 0, sizeof(*graph->parents));
5679 }
5681 static void
5682 done_rev_graph(struct rev_graph *graph)
5683 {
5684 if (graph_parent_is_merge(graph) &&
5685 graph->pos < graph->size - 1 &&
5686 graph->next->size == graph->size + graph->parents->size - 1) {
5687 size_t i = graph->pos + graph->parents->size - 1;
5689 graph->commit->graph_size = i * 2;
5690 while (i < graph->next->size - 1) {
5691 append_to_rev_graph(graph, ' ');
5692 append_to_rev_graph(graph, '\\');
5693 i++;
5694 }
5695 }
5697 clear_rev_graph(graph);
5698 }
5700 static void
5701 push_rev_graph(struct rev_graph *graph, const char *parent)
5702 {
5703 int i;
5705 /* "Collapse" duplicate parents lines.
5706 *
5707 * FIXME: This needs to also update update the drawn graph but
5708 * for now it just serves as a method for pruning graph lines. */
5709 for (i = 0; i < graph->size; i++)
5710 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5711 return;
5713 if (graph->size < SIZEOF_REVITEMS) {
5714 string_copy_rev(graph->rev[graph->size++], parent);
5715 }
5716 }
5718 static chtype
5719 get_rev_graph_symbol(struct rev_graph *graph)
5720 {
5721 chtype symbol;
5723 if (graph->boundary)
5724 symbol = REVGRAPH_BOUND;
5725 else if (graph->parents->size == 0)
5726 symbol = REVGRAPH_INIT;
5727 else if (graph_parent_is_merge(graph))
5728 symbol = REVGRAPH_MERGE;
5729 else if (graph->pos >= graph->size)
5730 symbol = REVGRAPH_BRANCH;
5731 else
5732 symbol = REVGRAPH_COMMIT;
5734 return symbol;
5735 }
5737 static void
5738 draw_rev_graph(struct rev_graph *graph)
5739 {
5740 struct rev_filler {
5741 chtype separator, line;
5742 };
5743 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5744 static struct rev_filler fillers[] = {
5745 { ' ', '|' },
5746 { '`', '.' },
5747 { '\'', ' ' },
5748 { '/', ' ' },
5749 };
5750 chtype symbol = get_rev_graph_symbol(graph);
5751 struct rev_filler *filler;
5752 size_t i;
5754 if (opt_line_graphics)
5755 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5757 filler = &fillers[DEFAULT];
5759 for (i = 0; i < graph->pos; i++) {
5760 append_to_rev_graph(graph, filler->line);
5761 if (graph_parent_is_merge(graph->prev) &&
5762 graph->prev->pos == i)
5763 filler = &fillers[RSHARP];
5765 append_to_rev_graph(graph, filler->separator);
5766 }
5768 /* Place the symbol for this revision. */
5769 append_to_rev_graph(graph, symbol);
5771 if (graph->prev->size > graph->size)
5772 filler = &fillers[RDIAG];
5773 else
5774 filler = &fillers[DEFAULT];
5776 i++;
5778 for (; i < graph->size; i++) {
5779 append_to_rev_graph(graph, filler->separator);
5780 append_to_rev_graph(graph, filler->line);
5781 if (graph_parent_is_merge(graph->prev) &&
5782 i < graph->prev->pos + graph->parents->size)
5783 filler = &fillers[RSHARP];
5784 if (graph->prev->size > graph->size)
5785 filler = &fillers[LDIAG];
5786 }
5788 if (graph->prev->size > graph->size) {
5789 append_to_rev_graph(graph, filler->separator);
5790 if (filler->line != ' ')
5791 append_to_rev_graph(graph, filler->line);
5792 }
5793 }
5795 /* Prepare the next rev graph */
5796 static void
5797 prepare_rev_graph(struct rev_graph *graph)
5798 {
5799 size_t i;
5801 /* First, traverse all lines of revisions up to the active one. */
5802 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5803 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5804 break;
5806 push_rev_graph(graph->next, graph->rev[graph->pos]);
5807 }
5809 /* Interleave the new revision parent(s). */
5810 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5811 push_rev_graph(graph->next, graph->parents->rev[i]);
5813 /* Lastly, put any remaining revisions. */
5814 for (i = graph->pos + 1; i < graph->size; i++)
5815 push_rev_graph(graph->next, graph->rev[i]);
5816 }
5818 static void
5819 update_rev_graph(struct view *view, struct rev_graph *graph)
5820 {
5821 /* If this is the finalizing update ... */
5822 if (graph->commit)
5823 prepare_rev_graph(graph);
5825 /* Graph visualization needs a one rev look-ahead,
5826 * so the first update doesn't visualize anything. */
5827 if (!graph->prev->commit)
5828 return;
5830 if (view->lines > 2)
5831 view->line[view->lines - 3].dirty = 1;
5832 if (view->lines > 1)
5833 view->line[view->lines - 2].dirty = 1;
5834 draw_rev_graph(graph->prev);
5835 done_rev_graph(graph->prev->prev);
5836 }
5839 /*
5840 * Main view backend
5841 */
5843 static const char *main_argv[SIZEOF_ARG] = {
5844 "git", "log", "--no-color", "--pretty=raw", "--parents",
5845 "--topo-order", "%(head)", NULL
5846 };
5848 static bool
5849 main_draw(struct view *view, struct line *line, unsigned int lineno)
5850 {
5851 struct commit *commit = line->data;
5853 if (!commit->author)
5854 return FALSE;
5856 if (opt_date && draw_date(view, &commit->time))
5857 return TRUE;
5859 if (opt_author && draw_author(view, commit->author))
5860 return TRUE;
5862 if (opt_rev_graph && commit->graph_size &&
5863 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5864 return TRUE;
5866 if (opt_show_refs && commit->refs) {
5867 size_t i = 0;
5869 do {
5870 enum line_type type;
5872 if (commit->refs[i]->head)
5873 type = LINE_MAIN_HEAD;
5874 else if (commit->refs[i]->ltag)
5875 type = LINE_MAIN_LOCAL_TAG;
5876 else if (commit->refs[i]->tag)
5877 type = LINE_MAIN_TAG;
5878 else if (commit->refs[i]->tracked)
5879 type = LINE_MAIN_TRACKED;
5880 else if (commit->refs[i]->remote)
5881 type = LINE_MAIN_REMOTE;
5882 else
5883 type = LINE_MAIN_REF;
5885 if (draw_text(view, type, "[", TRUE) ||
5886 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5887 draw_text(view, type, "]", TRUE))
5888 return TRUE;
5890 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5891 return TRUE;
5892 } while (commit->refs[i++]->next);
5893 }
5895 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5896 return TRUE;
5897 }
5899 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5900 static bool
5901 main_read(struct view *view, char *line)
5902 {
5903 static struct rev_graph *graph = graph_stacks;
5904 enum line_type type;
5905 struct commit *commit;
5907 if (!line) {
5908 int i;
5910 if (!view->lines && !view->parent)
5911 die("No revisions match the given arguments.");
5912 if (view->lines > 0) {
5913 commit = view->line[view->lines - 1].data;
5914 view->line[view->lines - 1].dirty = 1;
5915 if (!commit->author) {
5916 view->lines--;
5917 free(commit);
5918 graph->commit = NULL;
5919 }
5920 }
5921 update_rev_graph(view, graph);
5923 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5924 clear_rev_graph(&graph_stacks[i]);
5925 return TRUE;
5926 }
5928 type = get_line_type(line);
5929 if (type == LINE_COMMIT) {
5930 commit = calloc(1, sizeof(struct commit));
5931 if (!commit)
5932 return FALSE;
5934 line += STRING_SIZE("commit ");
5935 if (*line == '-') {
5936 graph->boundary = 1;
5937 line++;
5938 }
5940 string_copy_rev(commit->id, line);
5941 commit->refs = get_refs(commit->id);
5942 graph->commit = commit;
5943 add_line_data(view, commit, LINE_MAIN_COMMIT);
5945 while ((line = strchr(line, ' '))) {
5946 line++;
5947 push_rev_graph(graph->parents, line);
5948 commit->has_parents = TRUE;
5949 }
5950 return TRUE;
5951 }
5953 if (!view->lines)
5954 return TRUE;
5955 commit = view->line[view->lines - 1].data;
5957 switch (type) {
5958 case LINE_PARENT:
5959 if (commit->has_parents)
5960 break;
5961 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5962 break;
5964 case LINE_AUTHOR:
5965 parse_author_line(line + STRING_SIZE("author "),
5966 &commit->author, &commit->time);
5967 update_rev_graph(view, graph);
5968 graph = graph->next;
5969 break;
5971 default:
5972 /* Fill in the commit title if it has not already been set. */
5973 if (commit->title[0])
5974 break;
5976 /* Require titles to start with a non-space character at the
5977 * offset used by git log. */
5978 if (strncmp(line, " ", 4))
5979 break;
5980 line += 4;
5981 /* Well, if the title starts with a whitespace character,
5982 * try to be forgiving. Otherwise we end up with no title. */
5983 while (isspace(*line))
5984 line++;
5985 if (*line == '\0')
5986 break;
5987 /* FIXME: More graceful handling of titles; append "..." to
5988 * shortened titles, etc. */
5990 string_expand(commit->title, sizeof(commit->title), line, 1);
5991 view->line[view->lines - 1].dirty = 1;
5992 }
5994 return TRUE;
5995 }
5997 static enum request
5998 main_request(struct view *view, enum request request, struct line *line)
5999 {
6000 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
6002 switch (request) {
6003 case REQ_ENTER:
6004 open_view(view, REQ_VIEW_DIFF, flags);
6005 break;
6006 case REQ_REFRESH:
6007 load_refs();
6008 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6009 break;
6010 default:
6011 return request;
6012 }
6014 return REQ_NONE;
6015 }
6017 static bool
6018 grep_refs(struct ref **refs, regex_t *regex)
6019 {
6020 regmatch_t pmatch;
6021 size_t i = 0;
6023 if (!opt_show_refs || !refs)
6024 return FALSE;
6025 do {
6026 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6027 return TRUE;
6028 } while (refs[i++]->next);
6030 return FALSE;
6031 }
6033 static bool
6034 main_grep(struct view *view, struct line *line)
6035 {
6036 struct commit *commit = line->data;
6037 const char *text[] = {
6038 commit->title,
6039 opt_author ? commit->author : "",
6040 opt_date ? mkdate(&commit->time) : "",
6041 NULL
6042 };
6044 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6045 }
6047 static void
6048 main_select(struct view *view, struct line *line)
6049 {
6050 struct commit *commit = line->data;
6052 string_copy_rev(view->ref, commit->id);
6053 string_copy_rev(ref_commit, view->ref);
6054 }
6056 static struct view_ops main_ops = {
6057 "commit",
6058 main_argv,
6059 NULL,
6060 main_read,
6061 main_draw,
6062 main_request,
6063 main_grep,
6064 main_select,
6065 };
6068 /*
6069 * Unicode / UTF-8 handling
6070 *
6071 * NOTE: Much of the following code for dealing with Unicode is derived from
6072 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
6073 * src/intl/charset.c from the UTF-8 branch commit elinks-0.11.0-g31f2c28.
6074 */
6076 static inline int
6077 unicode_width(unsigned long c)
6078 {
6079 if (c >= 0x1100 &&
6080 (c <= 0x115f /* Hangul Jamo */
6081 || c == 0x2329
6082 || c == 0x232a
6083 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
6084 /* CJK ... Yi */
6085 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
6086 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
6087 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
6088 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
6089 || (c >= 0xffe0 && c <= 0xffe6)
6090 || (c >= 0x20000 && c <= 0x2fffd)
6091 || (c >= 0x30000 && c <= 0x3fffd)))
6092 return 2;
6094 if (c == '\t')
6095 return opt_tab_size;
6097 return 1;
6098 }
6100 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
6101 * Illegal bytes are set one. */
6102 static const unsigned char utf8_bytes[256] = {
6103 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,
6104 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,
6105 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,
6106 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,
6107 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,
6108 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,
6109 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,
6110 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,
6111 };
6113 /* Decode UTF-8 multi-byte representation into a Unicode character. */
6114 static inline unsigned long
6115 utf8_to_unicode(const char *string, size_t length)
6116 {
6117 unsigned long unicode;
6119 switch (length) {
6120 case 1:
6121 unicode = string[0];
6122 break;
6123 case 2:
6124 unicode = (string[0] & 0x1f) << 6;
6125 unicode += (string[1] & 0x3f);
6126 break;
6127 case 3:
6128 unicode = (string[0] & 0x0f) << 12;
6129 unicode += ((string[1] & 0x3f) << 6);
6130 unicode += (string[2] & 0x3f);
6131 break;
6132 case 4:
6133 unicode = (string[0] & 0x0f) << 18;
6134 unicode += ((string[1] & 0x3f) << 12);
6135 unicode += ((string[2] & 0x3f) << 6);
6136 unicode += (string[3] & 0x3f);
6137 break;
6138 case 5:
6139 unicode = (string[0] & 0x0f) << 24;
6140 unicode += ((string[1] & 0x3f) << 18);
6141 unicode += ((string[2] & 0x3f) << 12);
6142 unicode += ((string[3] & 0x3f) << 6);
6143 unicode += (string[4] & 0x3f);
6144 break;
6145 case 6:
6146 unicode = (string[0] & 0x01) << 30;
6147 unicode += ((string[1] & 0x3f) << 24);
6148 unicode += ((string[2] & 0x3f) << 18);
6149 unicode += ((string[3] & 0x3f) << 12);
6150 unicode += ((string[4] & 0x3f) << 6);
6151 unicode += (string[5] & 0x3f);
6152 break;
6153 default:
6154 die("Invalid Unicode length");
6155 }
6157 /* Invalid characters could return the special 0xfffd value but NUL
6158 * should be just as good. */
6159 return unicode > 0xffff ? 0 : unicode;
6160 }
6162 /* Calculates how much of string can be shown within the given maximum width
6163 * and sets trimmed parameter to non-zero value if all of string could not be
6164 * shown. If the reserve flag is TRUE, it will reserve at least one
6165 * trailing character, which can be useful when drawing a delimiter.
6166 *
6167 * Returns the number of bytes to output from string to satisfy max_width. */
6168 static size_t
6169 utf8_length(const char **start, size_t skip, int *width, size_t max_width, int *trimmed, bool reserve)
6170 {
6171 const char *string = *start;
6172 const char *end = strchr(string, '\0');
6173 unsigned char last_bytes = 0;
6174 size_t last_ucwidth = 0;
6176 *width = 0;
6177 *trimmed = 0;
6179 while (string < end) {
6180 int c = *(unsigned char *) string;
6181 unsigned char bytes = utf8_bytes[c];
6182 size_t ucwidth;
6183 unsigned long unicode;
6185 if (string + bytes > end)
6186 break;
6188 /* Change representation to figure out whether
6189 * it is a single- or double-width character. */
6191 unicode = utf8_to_unicode(string, bytes);
6192 /* FIXME: Graceful handling of invalid Unicode character. */
6193 if (!unicode)
6194 break;
6196 ucwidth = unicode_width(unicode);
6197 if (skip > 0) {
6198 skip -= ucwidth <= skip ? ucwidth : skip;
6199 *start += bytes;
6200 }
6201 *width += ucwidth;
6202 if (*width > max_width) {
6203 *trimmed = 1;
6204 *width -= ucwidth;
6205 if (reserve && *width == max_width) {
6206 string -= last_bytes;
6207 *width -= last_ucwidth;
6208 }
6209 break;
6210 }
6212 string += bytes;
6213 last_bytes = ucwidth ? bytes : 0;
6214 last_ucwidth = ucwidth;
6215 }
6217 return string - *start;
6218 }
6221 /*
6222 * Status management
6223 */
6225 /* Whether or not the curses interface has been initialized. */
6226 static bool cursed = FALSE;
6228 /* Terminal hacks and workarounds. */
6229 static bool use_scroll_redrawwin;
6230 static bool use_scroll_status_wclear;
6232 /* The status window is used for polling keystrokes. */
6233 static WINDOW *status_win;
6235 /* Reading from the prompt? */
6236 static bool input_mode = FALSE;
6238 static bool status_empty = FALSE;
6240 /* Update status and title window. */
6241 static void
6242 report(const char *msg, ...)
6243 {
6244 struct view *view = display[current_view];
6246 if (input_mode)
6247 return;
6249 if (!view) {
6250 char buf[SIZEOF_STR];
6251 va_list args;
6253 va_start(args, msg);
6254 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6255 buf[sizeof(buf) - 1] = 0;
6256 buf[sizeof(buf) - 2] = '.';
6257 buf[sizeof(buf) - 3] = '.';
6258 buf[sizeof(buf) - 4] = '.';
6259 }
6260 va_end(args);
6261 die("%s", buf);
6262 }
6264 if (!status_empty || *msg) {
6265 va_list args;
6267 va_start(args, msg);
6269 wmove(status_win, 0, 0);
6270 if (view->has_scrolled && use_scroll_status_wclear)
6271 wclear(status_win);
6272 if (*msg) {
6273 vwprintw(status_win, msg, args);
6274 status_empty = FALSE;
6275 } else {
6276 status_empty = TRUE;
6277 }
6278 wclrtoeol(status_win);
6279 wnoutrefresh(status_win);
6281 va_end(args);
6282 }
6284 update_view_title(view);
6285 }
6287 /* Controls when nodelay should be in effect when polling user input. */
6288 static void
6289 set_nonblocking_input(bool loading)
6290 {
6291 static unsigned int loading_views;
6293 if ((loading == FALSE && loading_views-- == 1) ||
6294 (loading == TRUE && loading_views++ == 0))
6295 nodelay(status_win, loading);
6296 }
6298 static void
6299 init_display(void)
6300 {
6301 const char *term;
6302 int x, y;
6304 /* Initialize the curses library */
6305 if (isatty(STDIN_FILENO)) {
6306 cursed = !!initscr();
6307 opt_tty = stdin;
6308 } else {
6309 /* Leave stdin and stdout alone when acting as a pager. */
6310 opt_tty = fopen("/dev/tty", "r+");
6311 if (!opt_tty)
6312 die("Failed to open /dev/tty");
6313 cursed = !!newterm(NULL, opt_tty, opt_tty);
6314 }
6316 if (!cursed)
6317 die("Failed to initialize curses");
6319 nonl(); /* Disable conversion and detect newlines from input. */
6320 cbreak(); /* Take input chars one at a time, no wait for \n */
6321 noecho(); /* Don't echo input */
6322 leaveok(stdscr, FALSE);
6324 if (has_colors())
6325 init_colors();
6327 getmaxyx(stdscr, y, x);
6328 status_win = newwin(1, 0, y - 1, 0);
6329 if (!status_win)
6330 die("Failed to create status window");
6332 /* Enable keyboard mapping */
6333 keypad(status_win, TRUE);
6334 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6336 TABSIZE = opt_tab_size;
6337 if (opt_line_graphics) {
6338 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
6339 }
6341 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6342 if (term && !strcmp(term, "gnome-terminal")) {
6343 /* In the gnome-terminal-emulator, the message from
6344 * scrolling up one line when impossible followed by
6345 * scrolling down one line causes corruption of the
6346 * status line. This is fixed by calling wclear. */
6347 use_scroll_status_wclear = TRUE;
6348 use_scroll_redrawwin = FALSE;
6350 } else if (term && !strcmp(term, "xrvt-xpm")) {
6351 /* No problems with full optimizations in xrvt-(unicode)
6352 * and aterm. */
6353 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6355 } else {
6356 /* When scrolling in (u)xterm the last line in the
6357 * scrolling direction will update slowly. */
6358 use_scroll_redrawwin = TRUE;
6359 use_scroll_status_wclear = FALSE;
6360 }
6361 }
6363 static int
6364 get_input(int prompt_position)
6365 {
6366 struct view *view;
6367 int i, key, cursor_y, cursor_x;
6369 if (prompt_position)
6370 input_mode = TRUE;
6372 while (TRUE) {
6373 foreach_view (view, i) {
6374 update_view(view);
6375 if (view_is_displayed(view) && view->has_scrolled &&
6376 use_scroll_redrawwin)
6377 redrawwin(view->win);
6378 view->has_scrolled = FALSE;
6379 }
6381 /* Update the cursor position. */
6382 if (prompt_position) {
6383 getbegyx(status_win, cursor_y, cursor_x);
6384 cursor_x = prompt_position;
6385 } else {
6386 view = display[current_view];
6387 getbegyx(view->win, cursor_y, cursor_x);
6388 cursor_x = view->width - 1;
6389 cursor_y += view->lineno - view->offset;
6390 }
6391 setsyx(cursor_y, cursor_x);
6393 /* Refresh, accept single keystroke of input */
6394 doupdate();
6395 key = wgetch(status_win);
6397 /* wgetch() with nodelay() enabled returns ERR when
6398 * there's no input. */
6399 if (key == ERR) {
6401 } else if (key == KEY_RESIZE) {
6402 int height, width;
6404 getmaxyx(stdscr, height, width);
6406 wresize(status_win, 1, width);
6407 mvwin(status_win, height - 1, 0);
6408 wnoutrefresh(status_win);
6409 resize_display();
6410 redraw_display(TRUE);
6412 } else {
6413 input_mode = FALSE;
6414 return key;
6415 }
6416 }
6417 }
6419 static char *
6420 prompt_input(const char *prompt, input_handler handler, void *data)
6421 {
6422 enum input_status status = INPUT_OK;
6423 static char buf[SIZEOF_STR];
6424 size_t pos = 0;
6426 buf[pos] = 0;
6428 while (status == INPUT_OK || status == INPUT_SKIP) {
6429 int key;
6431 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6432 wclrtoeol(status_win);
6434 key = get_input(pos + 1);
6435 switch (key) {
6436 case KEY_RETURN:
6437 case KEY_ENTER:
6438 case '\n':
6439 status = pos ? INPUT_STOP : INPUT_CANCEL;
6440 break;
6442 case KEY_BACKSPACE:
6443 if (pos > 0)
6444 buf[--pos] = 0;
6445 else
6446 status = INPUT_CANCEL;
6447 break;
6449 case KEY_ESC:
6450 status = INPUT_CANCEL;
6451 break;
6453 default:
6454 if (pos >= sizeof(buf)) {
6455 report("Input string too long");
6456 return NULL;
6457 }
6459 status = handler(data, buf, key);
6460 if (status == INPUT_OK)
6461 buf[pos++] = (char) key;
6462 }
6463 }
6465 /* Clear the status window */
6466 status_empty = FALSE;
6467 report("");
6469 if (status == INPUT_CANCEL)
6470 return NULL;
6472 buf[pos++] = 0;
6474 return buf;
6475 }
6477 static enum input_status
6478 prompt_yesno_handler(void *data, char *buf, int c)
6479 {
6480 if (c == 'y' || c == 'Y')
6481 return INPUT_STOP;
6482 if (c == 'n' || c == 'N')
6483 return INPUT_CANCEL;
6484 return INPUT_SKIP;
6485 }
6487 static bool
6488 prompt_yesno(const char *prompt)
6489 {
6490 char prompt2[SIZEOF_STR];
6492 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6493 return FALSE;
6495 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6496 }
6498 static enum input_status
6499 read_prompt_handler(void *data, char *buf, int c)
6500 {
6501 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6502 }
6504 static char *
6505 read_prompt(const char *prompt)
6506 {
6507 return prompt_input(prompt, read_prompt_handler, NULL);
6508 }
6510 /*
6511 * Repository properties
6512 */
6514 static struct ref *refs = NULL;
6515 static size_t refs_size = 0;
6517 /* Id <-> ref store */
6518 static struct ref ***id_refs = NULL;
6519 static size_t id_refs_size = 0;
6521 DEFINE_ALLOCATOR(realloc_refs, struct ref, 256)
6522 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6523 DEFINE_ALLOCATOR(realloc_refs_lists, struct ref **, 8)
6525 static int
6526 compare_refs(const void *ref1_, const void *ref2_)
6527 {
6528 const struct ref *ref1 = *(const struct ref **)ref1_;
6529 const struct ref *ref2 = *(const struct ref **)ref2_;
6531 if (ref1->tag != ref2->tag)
6532 return ref2->tag - ref1->tag;
6533 if (ref1->ltag != ref2->ltag)
6534 return ref2->ltag - ref2->ltag;
6535 if (ref1->head != ref2->head)
6536 return ref2->head - ref1->head;
6537 if (ref1->tracked != ref2->tracked)
6538 return ref2->tracked - ref1->tracked;
6539 if (ref1->remote != ref2->remote)
6540 return ref2->remote - ref1->remote;
6541 return strcmp(ref1->name, ref2->name);
6542 }
6544 static struct ref **
6545 get_refs(const char *id)
6546 {
6547 struct ref **ref_list = NULL;
6548 size_t ref_list_size = 0;
6549 size_t i;
6551 for (i = 0; i < id_refs_size; i++)
6552 if (!strcmp(id, id_refs[i][0]->id))
6553 return id_refs[i];
6555 if (!realloc_refs_lists(&id_refs, id_refs_size, 1))
6556 return NULL;
6558 for (i = 0; i < refs_size; i++) {
6559 if (strcmp(id, refs[i].id))
6560 continue;
6562 if (!realloc_refs_list(&ref_list, ref_list_size, 1))
6563 return ref_list;
6565 ref_list[ref_list_size] = &refs[i];
6566 /* XXX: The properties of the commit chains ensures that we can
6567 * safely modify the shared ref. The repo references will
6568 * always be similar for the same id. */
6569 ref_list[ref_list_size]->next = 1;
6570 ref_list_size++;
6571 }
6573 if (ref_list) {
6574 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6575 ref_list[ref_list_size - 1]->next = 0;
6576 id_refs[id_refs_size++] = ref_list;
6577 }
6579 return ref_list;
6580 }
6582 static int
6583 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6584 {
6585 struct ref *ref;
6586 bool tag = FALSE;
6587 bool ltag = FALSE;
6588 bool remote = FALSE;
6589 bool tracked = FALSE;
6590 bool check_replace = FALSE;
6591 bool head = FALSE;
6593 if (!prefixcmp(name, "refs/tags/")) {
6594 if (!suffixcmp(name, namelen, "^{}")) {
6595 namelen -= 3;
6596 name[namelen] = 0;
6597 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6598 check_replace = TRUE;
6599 } else {
6600 ltag = TRUE;
6601 }
6603 tag = TRUE;
6604 namelen -= STRING_SIZE("refs/tags/");
6605 name += STRING_SIZE("refs/tags/");
6607 } else if (!prefixcmp(name, "refs/remotes/")) {
6608 remote = TRUE;
6609 namelen -= STRING_SIZE("refs/remotes/");
6610 name += STRING_SIZE("refs/remotes/");
6611 tracked = !strcmp(opt_remote, name);
6613 } else if (!prefixcmp(name, "refs/heads/")) {
6614 namelen -= STRING_SIZE("refs/heads/");
6615 name += STRING_SIZE("refs/heads/");
6616 head = !strncmp(opt_head, name, namelen);
6618 } else if (!strcmp(name, "HEAD")) {
6619 string_ncopy(opt_head_rev, id, idlen);
6620 return OK;
6621 }
6623 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6624 /* it's an annotated tag, replace the previous SHA1 with the
6625 * resolved commit id; relies on the fact git-ls-remote lists
6626 * the commit id of an annotated tag right before the commit id
6627 * it points to. */
6628 refs[refs_size - 1].ltag = ltag;
6629 string_copy_rev(refs[refs_size - 1].id, id);
6631 return OK;
6632 }
6634 if (!realloc_refs(&refs, refs_size, 1))
6635 return ERR;
6637 ref = &refs[refs_size++];
6638 ref->name = malloc(namelen + 1);
6639 if (!ref->name)
6640 return ERR;
6642 strncpy(ref->name, name, namelen);
6643 ref->name[namelen] = 0;
6644 ref->head = head;
6645 ref->tag = tag;
6646 ref->ltag = ltag;
6647 ref->remote = remote;
6648 ref->tracked = tracked;
6649 string_copy_rev(ref->id, id);
6651 return OK;
6652 }
6654 static int
6655 load_refs(void)
6656 {
6657 const char *head_argv[] = {
6658 "git", "symbolic-ref", "HEAD", NULL
6659 };
6660 static const char *ls_remote_argv[SIZEOF_ARG] = {
6661 "git", "ls-remote", opt_git_dir, NULL
6662 };
6663 static bool init = FALSE;
6665 if (!init) {
6666 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6667 init = TRUE;
6668 }
6670 if (!*opt_git_dir)
6671 return OK;
6673 if (run_io_buf(head_argv, opt_head, sizeof(opt_head)) &&
6674 !prefixcmp(opt_head, "refs/heads/")) {
6675 char *offset = opt_head + STRING_SIZE("refs/heads/");
6677 memmove(opt_head, offset, strlen(offset) + 1);
6678 }
6680 while (refs_size > 0)
6681 free(refs[--refs_size].name);
6682 while (id_refs_size > 0)
6683 free(id_refs[--id_refs_size]);
6685 return run_io_load(ls_remote_argv, "\t", read_ref);
6686 }
6688 static void
6689 set_remote_branch(const char *name, const char *value, size_t valuelen)
6690 {
6691 if (!strcmp(name, ".remote")) {
6692 string_ncopy(opt_remote, value, valuelen);
6694 } else if (*opt_remote && !strcmp(name, ".merge")) {
6695 size_t from = strlen(opt_remote);
6697 if (!prefixcmp(value, "refs/heads/"))
6698 value += STRING_SIZE("refs/heads/");
6700 if (!string_format_from(opt_remote, &from, "/%s", value))
6701 opt_remote[0] = 0;
6702 }
6703 }
6705 static void
6706 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
6707 {
6708 const char *argv[SIZEOF_ARG] = { name, "=" };
6709 int argc = 1 + (cmd == option_set_command);
6710 int error = ERR;
6712 if (!argv_from_string(argv, &argc, value))
6713 config_msg = "Too many option arguments";
6714 else
6715 error = cmd(argc, argv);
6717 if (error == ERR)
6718 warn("Option 'tig.%s': %s", name, config_msg);
6719 }
6721 static bool
6722 set_environment_variable(const char *name, const char *value)
6723 {
6724 size_t len = strlen(name) + 1 + strlen(value) + 1;
6725 char *env = malloc(len);
6727 if (env &&
6728 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6729 putenv(env) == 0)
6730 return TRUE;
6731 free(env);
6732 return FALSE;
6733 }
6735 static void
6736 set_work_tree(const char *value)
6737 {
6738 char cwd[SIZEOF_STR];
6740 if (!getcwd(cwd, sizeof(cwd)))
6741 die("Failed to get cwd path: %s", strerror(errno));
6742 if (chdir(opt_git_dir) < 0)
6743 die("Failed to chdir(%s): %s", strerror(errno));
6744 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6745 die("Failed to get git path: %s", strerror(errno));
6746 if (chdir(cwd) < 0)
6747 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6748 if (chdir(value) < 0)
6749 die("Failed to chdir(%s): %s", value, strerror(errno));
6750 if (!getcwd(cwd, sizeof(cwd)))
6751 die("Failed to get cwd path: %s", strerror(errno));
6752 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6753 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6754 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6755 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6756 opt_is_inside_work_tree = TRUE;
6757 }
6759 static int
6760 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6761 {
6762 if (!strcmp(name, "i18n.commitencoding"))
6763 string_ncopy(opt_encoding, value, valuelen);
6765 else if (!strcmp(name, "core.editor"))
6766 string_ncopy(opt_editor, value, valuelen);
6768 else if (!strcmp(name, "core.worktree"))
6769 set_work_tree(value);
6771 else if (!prefixcmp(name, "tig.color."))
6772 set_repo_config_option(name + 10, value, option_color_command);
6774 else if (!prefixcmp(name, "tig.bind."))
6775 set_repo_config_option(name + 9, value, option_bind_command);
6777 else if (!prefixcmp(name, "tig."))
6778 set_repo_config_option(name + 4, value, option_set_command);
6780 else if (*opt_head && !prefixcmp(name, "branch.") &&
6781 !strncmp(name + 7, opt_head, strlen(opt_head)))
6782 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6784 return OK;
6785 }
6787 static int
6788 load_git_config(void)
6789 {
6790 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6792 return run_io_load(config_list_argv, "=", read_repo_config_option);
6793 }
6795 static int
6796 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6797 {
6798 if (!opt_git_dir[0]) {
6799 string_ncopy(opt_git_dir, name, namelen);
6801 } else if (opt_is_inside_work_tree == -1) {
6802 /* This can be 3 different values depending on the
6803 * version of git being used. If git-rev-parse does not
6804 * understand --is-inside-work-tree it will simply echo
6805 * the option else either "true" or "false" is printed.
6806 * Default to true for the unknown case. */
6807 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6809 } else if (*name == '.') {
6810 string_ncopy(opt_cdup, name, namelen);
6812 } else {
6813 string_ncopy(opt_prefix, name, namelen);
6814 }
6816 return OK;
6817 }
6819 static int
6820 load_repo_info(void)
6821 {
6822 const char *rev_parse_argv[] = {
6823 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6824 "--show-cdup", "--show-prefix", NULL
6825 };
6827 return run_io_load(rev_parse_argv, "=", read_repo_info);
6828 }
6831 /*
6832 * Main
6833 */
6835 static const char usage[] =
6836 "tig " TIG_VERSION " (" __DATE__ ")\n"
6837 "\n"
6838 "Usage: tig [options] [revs] [--] [paths]\n"
6839 " or: tig show [options] [revs] [--] [paths]\n"
6840 " or: tig blame [rev] path\n"
6841 " or: tig status\n"
6842 " or: tig < [git command output]\n"
6843 "\n"
6844 "Options:\n"
6845 " -v, --version Show version and exit\n"
6846 " -h, --help Show help message and exit";
6848 static void __NORETURN
6849 quit(int sig)
6850 {
6851 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6852 if (cursed)
6853 endwin();
6854 exit(0);
6855 }
6857 static void __NORETURN
6858 die(const char *err, ...)
6859 {
6860 va_list args;
6862 endwin();
6864 va_start(args, err);
6865 fputs("tig: ", stderr);
6866 vfprintf(stderr, err, args);
6867 fputs("\n", stderr);
6868 va_end(args);
6870 exit(1);
6871 }
6873 static void
6874 warn(const char *msg, ...)
6875 {
6876 va_list args;
6878 va_start(args, msg);
6879 fputs("tig warning: ", stderr);
6880 vfprintf(stderr, msg, args);
6881 fputs("\n", stderr);
6882 va_end(args);
6883 }
6885 static enum request
6886 parse_options(int argc, const char *argv[])
6887 {
6888 enum request request = REQ_VIEW_MAIN;
6889 const char *subcommand;
6890 bool seen_dashdash = FALSE;
6891 /* XXX: This is vulnerable to the user overriding options
6892 * required for the main view parser. */
6893 const char *custom_argv[SIZEOF_ARG] = {
6894 "git", "log", "--no-color", "--pretty=raw", "--parents",
6895 "--topo-order", NULL
6896 };
6897 int i, j = 6;
6899 if (!isatty(STDIN_FILENO)) {
6900 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
6901 return REQ_VIEW_PAGER;
6902 }
6904 if (argc <= 1)
6905 return REQ_NONE;
6907 subcommand = argv[1];
6908 if (!strcmp(subcommand, "status")) {
6909 if (argc > 2)
6910 warn("ignoring arguments after `%s'", subcommand);
6911 return REQ_VIEW_STATUS;
6913 } else if (!strcmp(subcommand, "blame")) {
6914 if (argc <= 2 || argc > 4)
6915 die("invalid number of options to blame\n\n%s", usage);
6917 i = 2;
6918 if (argc == 4) {
6919 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
6920 i++;
6921 }
6923 string_ncopy(opt_file, argv[i], strlen(argv[i]));
6924 return REQ_VIEW_BLAME;
6926 } else if (!strcmp(subcommand, "show")) {
6927 request = REQ_VIEW_DIFF;
6929 } else {
6930 subcommand = NULL;
6931 }
6933 if (subcommand) {
6934 custom_argv[1] = subcommand;
6935 j = 2;
6936 }
6938 for (i = 1 + !!subcommand; i < argc; i++) {
6939 const char *opt = argv[i];
6941 if (seen_dashdash || !strcmp(opt, "--")) {
6942 seen_dashdash = TRUE;
6944 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6945 printf("tig version %s\n", TIG_VERSION);
6946 quit(0);
6948 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6949 printf("%s\n", usage);
6950 quit(0);
6951 }
6953 custom_argv[j++] = opt;
6954 if (j >= ARRAY_SIZE(custom_argv))
6955 die("command too long");
6956 }
6958 if (!prepare_update(VIEW(request), custom_argv, NULL, FORMAT_NONE))
6959 die("Failed to format arguments");
6961 return request;
6962 }
6964 int
6965 main(int argc, const char *argv[])
6966 {
6967 enum request request = parse_options(argc, argv);
6968 struct view *view;
6969 size_t i;
6971 signal(SIGINT, quit);
6972 signal(SIGPIPE, SIG_IGN);
6974 if (setlocale(LC_ALL, "")) {
6975 char *codeset = nl_langinfo(CODESET);
6977 string_ncopy(opt_codeset, codeset, strlen(codeset));
6978 }
6980 if (load_repo_info() == ERR)
6981 die("Failed to load repo info.");
6983 if (load_options() == ERR)
6984 die("Failed to load user config.");
6986 if (load_git_config() == ERR)
6987 die("Failed to load repo config.");
6989 /* Require a git repository unless when running in pager mode. */
6990 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6991 die("Not a git repository");
6993 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6994 opt_utf8 = FALSE;
6996 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6997 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6998 if (opt_iconv == ICONV_NONE)
6999 die("Failed to initialize character set conversion");
7000 }
7002 if (load_refs() == ERR)
7003 die("Failed to load refs.");
7005 foreach_view (view, i)
7006 argv_from_env(view->ops->argv, view->cmd_env);
7008 init_display();
7010 if (request != REQ_NONE)
7011 open_view(NULL, request, OPEN_PREPARED);
7012 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7014 while (view_driver(display[current_view], request)) {
7015 int key = get_input(0);
7017 view = display[current_view];
7018 request = get_keybinding(view->keymap, key);
7020 /* Some low-level request handling. This keeps access to
7021 * status_win restricted. */
7022 switch (request) {
7023 case REQ_PROMPT:
7024 {
7025 char *cmd = read_prompt(":");
7027 if (cmd && isdigit(*cmd)) {
7028 int lineno = view->lineno + 1;
7030 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7031 select_view_line(view, lineno - 1);
7032 report("");
7033 } else {
7034 report("Unable to parse '%s' as a line number", cmd);
7035 }
7037 } else if (cmd) {
7038 struct view *next = VIEW(REQ_VIEW_PAGER);
7039 const char *argv[SIZEOF_ARG] = { "git" };
7040 int argc = 1;
7042 /* When running random commands, initially show the
7043 * command in the title. However, it maybe later be
7044 * overwritten if a commit line is selected. */
7045 string_ncopy(next->ref, cmd, strlen(cmd));
7047 if (!argv_from_string(argv, &argc, cmd)) {
7048 report("Too many arguments");
7049 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
7050 report("Failed to format command");
7051 } else {
7052 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7053 }
7054 }
7056 request = REQ_NONE;
7057 break;
7058 }
7059 case REQ_SEARCH:
7060 case REQ_SEARCH_BACK:
7061 {
7062 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7063 char *search = read_prompt(prompt);
7065 if (search)
7066 string_ncopy(opt_search, search, strlen(search));
7067 else if (*opt_search)
7068 request = request == REQ_SEARCH ?
7069 REQ_FIND_NEXT :
7070 REQ_FIND_PREV;
7071 else
7072 request = REQ_NONE;
7073 break;
7074 }
7075 default:
7076 break;
7077 }
7078 }
7080 quit(0);
7082 return 0;
7083 }