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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 };
4595 return grep_text(view, text);
4596 }
4598 static void
4599 blame_select(struct view *view, struct line *line)
4600 {
4601 struct blame *blame = line->data;
4602 struct blame_commit *commit = blame->commit;
4604 if (!commit)
4605 return;
4607 if (!strcmp(commit->id, NULL_ID))
4608 string_ncopy(ref_commit, "HEAD", 4);
4609 else
4610 string_copy_rev(ref_commit, commit->id);
4611 }
4613 static struct view_ops blame_ops = {
4614 "line",
4615 NULL,
4616 blame_open,
4617 blame_read,
4618 blame_draw,
4619 blame_request,
4620 blame_grep,
4621 blame_select,
4622 };
4624 /*
4625 * Status backend
4626 */
4628 struct status {
4629 char status;
4630 struct {
4631 mode_t mode;
4632 char rev[SIZEOF_REV];
4633 char name[SIZEOF_STR];
4634 } old;
4635 struct {
4636 mode_t mode;
4637 char rev[SIZEOF_REV];
4638 char name[SIZEOF_STR];
4639 } new;
4640 };
4642 static char status_onbranch[SIZEOF_STR];
4643 static struct status stage_status;
4644 static enum line_type stage_line_type;
4645 static size_t stage_chunks;
4646 static int *stage_chunk;
4648 DEFINE_ALLOCATOR(realloc_ints, int, 32)
4650 /* This should work even for the "On branch" line. */
4651 static inline bool
4652 status_has_none(struct view *view, struct line *line)
4653 {
4654 return line < view->line + view->lines && !line[1].data;
4655 }
4657 /* Get fields from the diff line:
4658 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4659 */
4660 static inline bool
4661 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4662 {
4663 const char *old_mode = buf + 1;
4664 const char *new_mode = buf + 8;
4665 const char *old_rev = buf + 15;
4666 const char *new_rev = buf + 56;
4667 const char *status = buf + 97;
4669 if (bufsize < 98 ||
4670 old_mode[-1] != ':' ||
4671 new_mode[-1] != ' ' ||
4672 old_rev[-1] != ' ' ||
4673 new_rev[-1] != ' ' ||
4674 status[-1] != ' ')
4675 return FALSE;
4677 file->status = *status;
4679 string_copy_rev(file->old.rev, old_rev);
4680 string_copy_rev(file->new.rev, new_rev);
4682 file->old.mode = strtoul(old_mode, NULL, 8);
4683 file->new.mode = strtoul(new_mode, NULL, 8);
4685 file->old.name[0] = file->new.name[0] = 0;
4687 return TRUE;
4688 }
4690 static bool
4691 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4692 {
4693 struct status *unmerged = NULL;
4694 char *buf;
4695 struct io io = {};
4697 if (!run_io(&io, argv, NULL, IO_RD))
4698 return FALSE;
4700 add_line_data(view, NULL, type);
4702 while ((buf = io_get(&io, 0, TRUE))) {
4703 struct status *file = unmerged;
4705 if (!file) {
4706 file = calloc(1, sizeof(*file));
4707 if (!file || !add_line_data(view, file, type))
4708 goto error_out;
4709 }
4711 /* Parse diff info part. */
4712 if (status) {
4713 file->status = status;
4714 if (status == 'A')
4715 string_copy(file->old.rev, NULL_ID);
4717 } else if (!file->status || file == unmerged) {
4718 if (!status_get_diff(file, buf, strlen(buf)))
4719 goto error_out;
4721 buf = io_get(&io, 0, TRUE);
4722 if (!buf)
4723 break;
4725 /* Collapse all modified entries that follow an
4726 * associated unmerged entry. */
4727 if (unmerged == file) {
4728 unmerged->status = 'U';
4729 unmerged = NULL;
4730 } else if (file->status == 'U') {
4731 unmerged = file;
4732 }
4733 }
4735 /* Grab the old name for rename/copy. */
4736 if (!*file->old.name &&
4737 (file->status == 'R' || file->status == 'C')) {
4738 string_ncopy(file->old.name, buf, strlen(buf));
4740 buf = io_get(&io, 0, TRUE);
4741 if (!buf)
4742 break;
4743 }
4745 /* git-ls-files just delivers a NUL separated list of
4746 * file names similar to the second half of the
4747 * git-diff-* output. */
4748 string_ncopy(file->new.name, buf, strlen(buf));
4749 if (!*file->old.name)
4750 string_copy(file->old.name, file->new.name);
4751 file = NULL;
4752 }
4754 if (io_error(&io)) {
4755 error_out:
4756 done_io(&io);
4757 return FALSE;
4758 }
4760 if (!view->line[view->lines - 1].data)
4761 add_line_data(view, NULL, LINE_STAT_NONE);
4763 done_io(&io);
4764 return TRUE;
4765 }
4767 /* Don't show unmerged entries in the staged section. */
4768 static const char *status_diff_index_argv[] = {
4769 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4770 "--cached", "-M", "HEAD", NULL
4771 };
4773 static const char *status_diff_files_argv[] = {
4774 "git", "diff-files", "-z", NULL
4775 };
4777 static const char *status_list_other_argv[] = {
4778 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4779 };
4781 static const char *status_list_no_head_argv[] = {
4782 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4783 };
4785 static const char *update_index_argv[] = {
4786 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4787 };
4789 /* Restore the previous line number to stay in the context or select a
4790 * line with something that can be updated. */
4791 static void
4792 status_restore(struct view *view)
4793 {
4794 if (view->p_lineno >= view->lines)
4795 view->p_lineno = view->lines - 1;
4796 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4797 view->p_lineno++;
4798 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4799 view->p_lineno--;
4801 /* If the above fails, always skip the "On branch" line. */
4802 if (view->p_lineno < view->lines)
4803 view->lineno = view->p_lineno;
4804 else
4805 view->lineno = 1;
4807 if (view->lineno < view->offset)
4808 view->offset = view->lineno;
4809 else if (view->offset + view->height <= view->lineno)
4810 view->offset = view->lineno - view->height + 1;
4812 view->p_restore = FALSE;
4813 }
4815 static void
4816 status_update_onbranch(void)
4817 {
4818 static const char *paths[][2] = {
4819 { "rebase-apply/rebasing", "Rebasing" },
4820 { "rebase-apply/applying", "Applying mailbox" },
4821 { "rebase-apply/", "Rebasing mailbox" },
4822 { "rebase-merge/interactive", "Interactive rebase" },
4823 { "rebase-merge/", "Rebase merge" },
4824 { "MERGE_HEAD", "Merging" },
4825 { "BISECT_LOG", "Bisecting" },
4826 { "HEAD", "On branch" },
4827 };
4828 char buf[SIZEOF_STR];
4829 struct stat stat;
4830 int i;
4832 if (is_initial_commit()) {
4833 string_copy(status_onbranch, "Initial commit");
4834 return;
4835 }
4837 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4838 char *head = opt_head;
4840 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4841 lstat(buf, &stat) < 0)
4842 continue;
4844 if (!*opt_head) {
4845 struct io io = {};
4847 if (string_format(buf, "%s/rebase-merge/head-name", opt_git_dir) &&
4848 io_open(&io, buf) &&
4849 io_read_buf(&io, buf, sizeof(buf))) {
4850 head = buf;
4851 if (!prefixcmp(head, "refs/heads/"))
4852 head += STRING_SIZE("refs/heads/");
4853 }
4854 }
4856 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4857 string_copy(status_onbranch, opt_head);
4858 return;
4859 }
4861 string_copy(status_onbranch, "Not currently on any branch");
4862 }
4864 /* First parse staged info using git-diff-index(1), then parse unstaged
4865 * info using git-diff-files(1), and finally untracked files using
4866 * git-ls-files(1). */
4867 static bool
4868 status_open(struct view *view)
4869 {
4870 reset_view(view);
4872 add_line_data(view, NULL, LINE_STAT_HEAD);
4873 status_update_onbranch();
4875 run_io_bg(update_index_argv);
4877 if (is_initial_commit()) {
4878 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4879 return FALSE;
4880 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4881 return FALSE;
4882 }
4884 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4885 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4886 return FALSE;
4888 /* Restore the exact position or use the specialized restore
4889 * mode? */
4890 if (!view->p_restore)
4891 status_restore(view);
4892 return TRUE;
4893 }
4895 static bool
4896 status_draw(struct view *view, struct line *line, unsigned int lineno)
4897 {
4898 struct status *status = line->data;
4899 enum line_type type;
4900 const char *text;
4902 if (!status) {
4903 switch (line->type) {
4904 case LINE_STAT_STAGED:
4905 type = LINE_STAT_SECTION;
4906 text = "Changes to be committed:";
4907 break;
4909 case LINE_STAT_UNSTAGED:
4910 type = LINE_STAT_SECTION;
4911 text = "Changed but not updated:";
4912 break;
4914 case LINE_STAT_UNTRACKED:
4915 type = LINE_STAT_SECTION;
4916 text = "Untracked files:";
4917 break;
4919 case LINE_STAT_NONE:
4920 type = LINE_DEFAULT;
4921 text = " (no files)";
4922 break;
4924 case LINE_STAT_HEAD:
4925 type = LINE_STAT_HEAD;
4926 text = status_onbranch;
4927 break;
4929 default:
4930 return FALSE;
4931 }
4932 } else {
4933 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4935 buf[0] = status->status;
4936 if (draw_text(view, line->type, buf, TRUE))
4937 return TRUE;
4938 type = LINE_DEFAULT;
4939 text = status->new.name;
4940 }
4942 draw_text(view, type, text, TRUE);
4943 return TRUE;
4944 }
4946 static enum request
4947 status_load_error(struct view *view, struct view *stage, const char *path)
4948 {
4949 if (displayed_views() == 2 || display[current_view] != view)
4950 maximize_view(view);
4951 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
4952 return REQ_NONE;
4953 }
4955 static enum request
4956 status_enter(struct view *view, struct line *line)
4957 {
4958 struct status *status = line->data;
4959 const char *oldpath = status ? status->old.name : NULL;
4960 /* Diffs for unmerged entries are empty when passing the new
4961 * path, so leave it empty. */
4962 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4963 const char *info;
4964 enum open_flags split;
4965 struct view *stage = VIEW(REQ_VIEW_STAGE);
4967 if (line->type == LINE_STAT_NONE ||
4968 (!status && line[1].type == LINE_STAT_NONE)) {
4969 report("No file to diff");
4970 return REQ_NONE;
4971 }
4973 switch (line->type) {
4974 case LINE_STAT_STAGED:
4975 if (is_initial_commit()) {
4976 const char *no_head_diff_argv[] = {
4977 "git", "diff", "--no-color", "--patch-with-stat",
4978 "--", "/dev/null", newpath, NULL
4979 };
4981 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4982 return status_load_error(view, stage, newpath);
4983 } else {
4984 const char *index_show_argv[] = {
4985 "git", "diff-index", "--root", "--patch-with-stat",
4986 "-C", "-M", "--cached", "HEAD", "--",
4987 oldpath, newpath, NULL
4988 };
4990 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4991 return status_load_error(view, stage, newpath);
4992 }
4994 if (status)
4995 info = "Staged changes to %s";
4996 else
4997 info = "Staged changes";
4998 break;
5000 case LINE_STAT_UNSTAGED:
5001 {
5002 const char *files_show_argv[] = {
5003 "git", "diff-files", "--root", "--patch-with-stat",
5004 "-C", "-M", "--", oldpath, newpath, NULL
5005 };
5007 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
5008 return status_load_error(view, stage, newpath);
5009 if (status)
5010 info = "Unstaged changes to %s";
5011 else
5012 info = "Unstaged changes";
5013 break;
5014 }
5015 case LINE_STAT_UNTRACKED:
5016 if (!newpath) {
5017 report("No file to show");
5018 return REQ_NONE;
5019 }
5021 if (!suffixcmp(status->new.name, -1, "/")) {
5022 report("Cannot display a directory");
5023 return REQ_NONE;
5024 }
5026 if (!prepare_update_file(stage, newpath))
5027 return status_load_error(view, stage, newpath);
5028 info = "Untracked file %s";
5029 break;
5031 case LINE_STAT_HEAD:
5032 return REQ_NONE;
5034 default:
5035 die("line type %d not handled in switch", line->type);
5036 }
5038 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5039 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5040 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5041 if (status) {
5042 stage_status = *status;
5043 } else {
5044 memset(&stage_status, 0, sizeof(stage_status));
5045 }
5047 stage_line_type = line->type;
5048 stage_chunks = 0;
5049 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5050 }
5052 return REQ_NONE;
5053 }
5055 static bool
5056 status_exists(struct status *status, enum line_type type)
5057 {
5058 struct view *view = VIEW(REQ_VIEW_STATUS);
5059 unsigned long lineno;
5061 for (lineno = 0; lineno < view->lines; lineno++) {
5062 struct line *line = &view->line[lineno];
5063 struct status *pos = line->data;
5065 if (line->type != type)
5066 continue;
5067 if (!pos && (!status || !status->status) && line[1].data) {
5068 select_view_line(view, lineno);
5069 return TRUE;
5070 }
5071 if (pos && !strcmp(status->new.name, pos->new.name)) {
5072 select_view_line(view, lineno);
5073 return TRUE;
5074 }
5075 }
5077 return FALSE;
5078 }
5081 static bool
5082 status_update_prepare(struct io *io, enum line_type type)
5083 {
5084 const char *staged_argv[] = {
5085 "git", "update-index", "-z", "--index-info", NULL
5086 };
5087 const char *others_argv[] = {
5088 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5089 };
5091 switch (type) {
5092 case LINE_STAT_STAGED:
5093 return run_io(io, staged_argv, opt_cdup, IO_WR);
5095 case LINE_STAT_UNSTAGED:
5096 return run_io(io, others_argv, opt_cdup, IO_WR);
5098 case LINE_STAT_UNTRACKED:
5099 return run_io(io, others_argv, NULL, IO_WR);
5101 default:
5102 die("line type %d not handled in switch", type);
5103 return FALSE;
5104 }
5105 }
5107 static bool
5108 status_update_write(struct io *io, struct status *status, enum line_type type)
5109 {
5110 char buf[SIZEOF_STR];
5111 size_t bufsize = 0;
5113 switch (type) {
5114 case LINE_STAT_STAGED:
5115 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5116 status->old.mode,
5117 status->old.rev,
5118 status->old.name, 0))
5119 return FALSE;
5120 break;
5122 case LINE_STAT_UNSTAGED:
5123 case LINE_STAT_UNTRACKED:
5124 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5125 return FALSE;
5126 break;
5128 default:
5129 die("line type %d not handled in switch", type);
5130 }
5132 return io_write(io, buf, bufsize);
5133 }
5135 static bool
5136 status_update_file(struct status *status, enum line_type type)
5137 {
5138 struct io io = {};
5139 bool result;
5141 if (!status_update_prepare(&io, type))
5142 return FALSE;
5144 result = status_update_write(&io, status, type);
5145 return done_io(&io) && result;
5146 }
5148 static bool
5149 status_update_files(struct view *view, struct line *line)
5150 {
5151 char buf[sizeof(view->ref)];
5152 struct io io = {};
5153 bool result = TRUE;
5154 struct line *pos = view->line + view->lines;
5155 int files = 0;
5156 int file, done;
5157 int cursor_y, cursor_x;
5159 if (!status_update_prepare(&io, line->type))
5160 return FALSE;
5162 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5163 files++;
5165 string_copy(buf, view->ref);
5166 getsyx(cursor_y, cursor_x);
5167 for (file = 0, done = 5; result && file < files; line++, file++) {
5168 int almost_done = file * 100 / files;
5170 if (almost_done > done) {
5171 done = almost_done;
5172 string_format(view->ref, "updating file %u of %u (%d%% done)",
5173 file, files, done);
5174 update_view_title(view);
5175 setsyx(cursor_y, cursor_x);
5176 doupdate();
5177 }
5178 result = status_update_write(&io, line->data, line->type);
5179 }
5180 string_copy(view->ref, buf);
5182 return done_io(&io) && result;
5183 }
5185 static bool
5186 status_update(struct view *view)
5187 {
5188 struct line *line = &view->line[view->lineno];
5190 assert(view->lines);
5192 if (!line->data) {
5193 /* This should work even for the "On branch" line. */
5194 if (line < view->line + view->lines && !line[1].data) {
5195 report("Nothing to update");
5196 return FALSE;
5197 }
5199 if (!status_update_files(view, line + 1)) {
5200 report("Failed to update file status");
5201 return FALSE;
5202 }
5204 } else if (!status_update_file(line->data, line->type)) {
5205 report("Failed to update file status");
5206 return FALSE;
5207 }
5209 return TRUE;
5210 }
5212 static bool
5213 status_revert(struct status *status, enum line_type type, bool has_none)
5214 {
5215 if (!status || type != LINE_STAT_UNSTAGED) {
5216 if (type == LINE_STAT_STAGED) {
5217 report("Cannot revert changes to staged files");
5218 } else if (type == LINE_STAT_UNTRACKED) {
5219 report("Cannot revert changes to untracked files");
5220 } else if (has_none) {
5221 report("Nothing to revert");
5222 } else {
5223 report("Cannot revert changes to multiple files");
5224 }
5225 return FALSE;
5227 } else {
5228 char mode[10] = "100644";
5229 const char *reset_argv[] = {
5230 "git", "update-index", "--cacheinfo", mode,
5231 status->old.rev, status->old.name, NULL
5232 };
5233 const char *checkout_argv[] = {
5234 "git", "checkout", "--", status->old.name, NULL
5235 };
5237 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
5238 return FALSE;
5239 string_format(mode, "%o", status->old.mode);
5240 return (status->status != 'U' || run_io_fg(reset_argv, opt_cdup)) &&
5241 run_io_fg(checkout_argv, opt_cdup);
5242 }
5243 }
5245 static enum request
5246 status_request(struct view *view, enum request request, struct line *line)
5247 {
5248 struct status *status = line->data;
5250 switch (request) {
5251 case REQ_STATUS_UPDATE:
5252 if (!status_update(view))
5253 return REQ_NONE;
5254 break;
5256 case REQ_STATUS_REVERT:
5257 if (!status_revert(status, line->type, status_has_none(view, line)))
5258 return REQ_NONE;
5259 break;
5261 case REQ_STATUS_MERGE:
5262 if (!status || status->status != 'U') {
5263 report("Merging only possible for files with unmerged status ('U').");
5264 return REQ_NONE;
5265 }
5266 open_mergetool(status->new.name);
5267 break;
5269 case REQ_EDIT:
5270 if (!status)
5271 return request;
5272 if (status->status == 'D') {
5273 report("File has been deleted.");
5274 return REQ_NONE;
5275 }
5277 open_editor(status->status != '?', status->new.name);
5278 break;
5280 case REQ_VIEW_BLAME:
5281 if (status) {
5282 string_copy(opt_file, status->new.name);
5283 opt_ref[0] = 0;
5284 }
5285 return request;
5287 case REQ_ENTER:
5288 /* After returning the status view has been split to
5289 * show the stage view. No further reloading is
5290 * necessary. */
5291 return status_enter(view, line);
5293 case REQ_REFRESH:
5294 /* Simply reload the view. */
5295 break;
5297 default:
5298 return request;
5299 }
5301 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5303 return REQ_NONE;
5304 }
5306 static void
5307 status_select(struct view *view, struct line *line)
5308 {
5309 struct status *status = line->data;
5310 char file[SIZEOF_STR] = "all files";
5311 const char *text;
5312 const char *key;
5314 if (status && !string_format(file, "'%s'", status->new.name))
5315 return;
5317 if (!status && line[1].type == LINE_STAT_NONE)
5318 line++;
5320 switch (line->type) {
5321 case LINE_STAT_STAGED:
5322 text = "Press %s to unstage %s for commit";
5323 break;
5325 case LINE_STAT_UNSTAGED:
5326 text = "Press %s to stage %s for commit";
5327 break;
5329 case LINE_STAT_UNTRACKED:
5330 text = "Press %s to stage %s for addition";
5331 break;
5333 case LINE_STAT_HEAD:
5334 case LINE_STAT_NONE:
5335 text = "Nothing to update";
5336 break;
5338 default:
5339 die("line type %d not handled in switch", line->type);
5340 }
5342 if (status && status->status == 'U') {
5343 text = "Press %s to resolve conflict in %s";
5344 key = get_key(REQ_STATUS_MERGE);
5346 } else {
5347 key = get_key(REQ_STATUS_UPDATE);
5348 }
5350 string_format(view->ref, text, key, file);
5351 }
5353 static bool
5354 status_grep(struct view *view, struct line *line)
5355 {
5356 struct status *status = line->data;
5358 if (status) {
5359 const char buf[2] = { status->status, 0 };
5360 const char *text[] = { status->new.name, buf, NULL };
5362 return grep_text(view, text);
5363 }
5365 return FALSE;
5366 }
5368 static struct view_ops status_ops = {
5369 "file",
5370 NULL,
5371 status_open,
5372 NULL,
5373 status_draw,
5374 status_request,
5375 status_grep,
5376 status_select,
5377 };
5380 static bool
5381 stage_diff_write(struct io *io, struct line *line, struct line *end)
5382 {
5383 while (line < end) {
5384 if (!io_write(io, line->data, strlen(line->data)) ||
5385 !io_write(io, "\n", 1))
5386 return FALSE;
5387 line++;
5388 if (line->type == LINE_DIFF_CHUNK ||
5389 line->type == LINE_DIFF_HEADER)
5390 break;
5391 }
5393 return TRUE;
5394 }
5396 static struct line *
5397 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5398 {
5399 for (; view->line < line; line--)
5400 if (line->type == type)
5401 return line;
5403 return NULL;
5404 }
5406 static bool
5407 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5408 {
5409 const char *apply_argv[SIZEOF_ARG] = {
5410 "git", "apply", "--whitespace=nowarn", NULL
5411 };
5412 struct line *diff_hdr;
5413 struct io io = {};
5414 int argc = 3;
5416 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5417 if (!diff_hdr)
5418 return FALSE;
5420 if (!revert)
5421 apply_argv[argc++] = "--cached";
5422 if (revert || stage_line_type == LINE_STAT_STAGED)
5423 apply_argv[argc++] = "-R";
5424 apply_argv[argc++] = "-";
5425 apply_argv[argc++] = NULL;
5426 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5427 return FALSE;
5429 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5430 !stage_diff_write(&io, chunk, view->line + view->lines))
5431 chunk = NULL;
5433 done_io(&io);
5434 run_io_bg(update_index_argv);
5436 return chunk ? TRUE : FALSE;
5437 }
5439 static bool
5440 stage_update(struct view *view, struct line *line)
5441 {
5442 struct line *chunk = NULL;
5444 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5445 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5447 if (chunk) {
5448 if (!stage_apply_chunk(view, chunk, FALSE)) {
5449 report("Failed to apply chunk");
5450 return FALSE;
5451 }
5453 } else if (!stage_status.status) {
5454 view = VIEW(REQ_VIEW_STATUS);
5456 for (line = view->line; line < view->line + view->lines; line++)
5457 if (line->type == stage_line_type)
5458 break;
5460 if (!status_update_files(view, line + 1)) {
5461 report("Failed to update files");
5462 return FALSE;
5463 }
5465 } else if (!status_update_file(&stage_status, stage_line_type)) {
5466 report("Failed to update file");
5467 return FALSE;
5468 }
5470 return TRUE;
5471 }
5473 static bool
5474 stage_revert(struct view *view, struct line *line)
5475 {
5476 struct line *chunk = NULL;
5478 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5479 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5481 if (chunk) {
5482 if (!prompt_yesno("Are you sure you want to revert changes?"))
5483 return FALSE;
5485 if (!stage_apply_chunk(view, chunk, TRUE)) {
5486 report("Failed to revert chunk");
5487 return FALSE;
5488 }
5489 return TRUE;
5491 } else {
5492 return status_revert(stage_status.status ? &stage_status : NULL,
5493 stage_line_type, FALSE);
5494 }
5495 }
5498 static void
5499 stage_next(struct view *view, struct line *line)
5500 {
5501 int i;
5503 if (!stage_chunks) {
5504 for (line = view->line; line < view->line + view->lines; line++) {
5505 if (line->type != LINE_DIFF_CHUNK)
5506 continue;
5508 if (!realloc_ints(&stage_chunk, stage_chunks, 1)) {
5509 report("Allocation failure");
5510 return;
5511 }
5513 stage_chunk[stage_chunks++] = line - view->line;
5514 }
5515 }
5517 for (i = 0; i < stage_chunks; i++) {
5518 if (stage_chunk[i] > view->lineno) {
5519 do_scroll_view(view, stage_chunk[i] - view->lineno);
5520 report("Chunk %d of %d", i + 1, stage_chunks);
5521 return;
5522 }
5523 }
5525 report("No next chunk found");
5526 }
5528 static enum request
5529 stage_request(struct view *view, enum request request, struct line *line)
5530 {
5531 switch (request) {
5532 case REQ_STATUS_UPDATE:
5533 if (!stage_update(view, line))
5534 return REQ_NONE;
5535 break;
5537 case REQ_STATUS_REVERT:
5538 if (!stage_revert(view, line))
5539 return REQ_NONE;
5540 break;
5542 case REQ_STAGE_NEXT:
5543 if (stage_line_type == LINE_STAT_UNTRACKED) {
5544 report("File is untracked; press %s to add",
5545 get_key(REQ_STATUS_UPDATE));
5546 return REQ_NONE;
5547 }
5548 stage_next(view, line);
5549 return REQ_NONE;
5551 case REQ_EDIT:
5552 if (!stage_status.new.name[0])
5553 return request;
5554 if (stage_status.status == 'D') {
5555 report("File has been deleted.");
5556 return REQ_NONE;
5557 }
5559 open_editor(stage_status.status != '?', stage_status.new.name);
5560 break;
5562 case REQ_REFRESH:
5563 /* Reload everything ... */
5564 break;
5566 case REQ_VIEW_BLAME:
5567 if (stage_status.new.name[0]) {
5568 string_copy(opt_file, stage_status.new.name);
5569 opt_ref[0] = 0;
5570 }
5571 return request;
5573 case REQ_ENTER:
5574 return pager_request(view, request, line);
5576 default:
5577 return request;
5578 }
5580 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5581 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5583 /* Check whether the staged entry still exists, and close the
5584 * stage view if it doesn't. */
5585 if (!status_exists(&stage_status, stage_line_type)) {
5586 status_restore(VIEW(REQ_VIEW_STATUS));
5587 return REQ_VIEW_CLOSE;
5588 }
5590 if (stage_line_type == LINE_STAT_UNTRACKED) {
5591 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5592 report("Cannot display a directory");
5593 return REQ_NONE;
5594 }
5596 if (!prepare_update_file(view, stage_status.new.name)) {
5597 report("Failed to open file: %s", strerror(errno));
5598 return REQ_NONE;
5599 }
5600 }
5601 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5603 return REQ_NONE;
5604 }
5606 static struct view_ops stage_ops = {
5607 "line",
5608 NULL,
5609 NULL,
5610 pager_read,
5611 pager_draw,
5612 stage_request,
5613 pager_grep,
5614 pager_select,
5615 };
5618 /*
5619 * Revision graph
5620 */
5622 struct commit {
5623 char id[SIZEOF_REV]; /* SHA1 ID. */
5624 char title[128]; /* First line of the commit message. */
5625 const char *author; /* Author of the commit. */
5626 time_t time; /* Date from the author ident. */
5627 struct ref **refs; /* Repository references. */
5628 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5629 size_t graph_size; /* The width of the graph array. */
5630 bool has_parents; /* Rewritten --parents seen. */
5631 };
5633 /* Size of rev graph with no "padding" columns */
5634 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5636 struct rev_graph {
5637 struct rev_graph *prev, *next, *parents;
5638 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5639 size_t size;
5640 struct commit *commit;
5641 size_t pos;
5642 unsigned int boundary:1;
5643 };
5645 /* Parents of the commit being visualized. */
5646 static struct rev_graph graph_parents[4];
5648 /* The current stack of revisions on the graph. */
5649 static struct rev_graph graph_stacks[4] = {
5650 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5651 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5652 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5653 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5654 };
5656 static inline bool
5657 graph_parent_is_merge(struct rev_graph *graph)
5658 {
5659 return graph->parents->size > 1;
5660 }
5662 static inline void
5663 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5664 {
5665 struct commit *commit = graph->commit;
5667 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5668 commit->graph[commit->graph_size++] = symbol;
5669 }
5671 static void
5672 clear_rev_graph(struct rev_graph *graph)
5673 {
5674 graph->boundary = 0;
5675 graph->size = graph->pos = 0;
5676 graph->commit = NULL;
5677 memset(graph->parents, 0, sizeof(*graph->parents));
5678 }
5680 static void
5681 done_rev_graph(struct rev_graph *graph)
5682 {
5683 if (graph_parent_is_merge(graph) &&
5684 graph->pos < graph->size - 1 &&
5685 graph->next->size == graph->size + graph->parents->size - 1) {
5686 size_t i = graph->pos + graph->parents->size - 1;
5688 graph->commit->graph_size = i * 2;
5689 while (i < graph->next->size - 1) {
5690 append_to_rev_graph(graph, ' ');
5691 append_to_rev_graph(graph, '\\');
5692 i++;
5693 }
5694 }
5696 clear_rev_graph(graph);
5697 }
5699 static void
5700 push_rev_graph(struct rev_graph *graph, const char *parent)
5701 {
5702 int i;
5704 /* "Collapse" duplicate parents lines.
5705 *
5706 * FIXME: This needs to also update update the drawn graph but
5707 * for now it just serves as a method for pruning graph lines. */
5708 for (i = 0; i < graph->size; i++)
5709 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5710 return;
5712 if (graph->size < SIZEOF_REVITEMS) {
5713 string_copy_rev(graph->rev[graph->size++], parent);
5714 }
5715 }
5717 static chtype
5718 get_rev_graph_symbol(struct rev_graph *graph)
5719 {
5720 chtype symbol;
5722 if (graph->boundary)
5723 symbol = REVGRAPH_BOUND;
5724 else if (graph->parents->size == 0)
5725 symbol = REVGRAPH_INIT;
5726 else if (graph_parent_is_merge(graph))
5727 symbol = REVGRAPH_MERGE;
5728 else if (graph->pos >= graph->size)
5729 symbol = REVGRAPH_BRANCH;
5730 else
5731 symbol = REVGRAPH_COMMIT;
5733 return symbol;
5734 }
5736 static void
5737 draw_rev_graph(struct rev_graph *graph)
5738 {
5739 struct rev_filler {
5740 chtype separator, line;
5741 };
5742 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5743 static struct rev_filler fillers[] = {
5744 { ' ', '|' },
5745 { '`', '.' },
5746 { '\'', ' ' },
5747 { '/', ' ' },
5748 };
5749 chtype symbol = get_rev_graph_symbol(graph);
5750 struct rev_filler *filler;
5751 size_t i;
5753 if (opt_line_graphics)
5754 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5756 filler = &fillers[DEFAULT];
5758 for (i = 0; i < graph->pos; i++) {
5759 append_to_rev_graph(graph, filler->line);
5760 if (graph_parent_is_merge(graph->prev) &&
5761 graph->prev->pos == i)
5762 filler = &fillers[RSHARP];
5764 append_to_rev_graph(graph, filler->separator);
5765 }
5767 /* Place the symbol for this revision. */
5768 append_to_rev_graph(graph, symbol);
5770 if (graph->prev->size > graph->size)
5771 filler = &fillers[RDIAG];
5772 else
5773 filler = &fillers[DEFAULT];
5775 i++;
5777 for (; i < graph->size; i++) {
5778 append_to_rev_graph(graph, filler->separator);
5779 append_to_rev_graph(graph, filler->line);
5780 if (graph_parent_is_merge(graph->prev) &&
5781 i < graph->prev->pos + graph->parents->size)
5782 filler = &fillers[RSHARP];
5783 if (graph->prev->size > graph->size)
5784 filler = &fillers[LDIAG];
5785 }
5787 if (graph->prev->size > graph->size) {
5788 append_to_rev_graph(graph, filler->separator);
5789 if (filler->line != ' ')
5790 append_to_rev_graph(graph, filler->line);
5791 }
5792 }
5794 /* Prepare the next rev graph */
5795 static void
5796 prepare_rev_graph(struct rev_graph *graph)
5797 {
5798 size_t i;
5800 /* First, traverse all lines of revisions up to the active one. */
5801 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5802 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5803 break;
5805 push_rev_graph(graph->next, graph->rev[graph->pos]);
5806 }
5808 /* Interleave the new revision parent(s). */
5809 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5810 push_rev_graph(graph->next, graph->parents->rev[i]);
5812 /* Lastly, put any remaining revisions. */
5813 for (i = graph->pos + 1; i < graph->size; i++)
5814 push_rev_graph(graph->next, graph->rev[i]);
5815 }
5817 static void
5818 update_rev_graph(struct view *view, struct rev_graph *graph)
5819 {
5820 /* If this is the finalizing update ... */
5821 if (graph->commit)
5822 prepare_rev_graph(graph);
5824 /* Graph visualization needs a one rev look-ahead,
5825 * so the first update doesn't visualize anything. */
5826 if (!graph->prev->commit)
5827 return;
5829 if (view->lines > 2)
5830 view->line[view->lines - 3].dirty = 1;
5831 if (view->lines > 1)
5832 view->line[view->lines - 2].dirty = 1;
5833 draw_rev_graph(graph->prev);
5834 done_rev_graph(graph->prev->prev);
5835 }
5838 /*
5839 * Main view backend
5840 */
5842 static const char *main_argv[SIZEOF_ARG] = {
5843 "git", "log", "--no-color", "--pretty=raw", "--parents",
5844 "--topo-order", "%(head)", NULL
5845 };
5847 static bool
5848 main_draw(struct view *view, struct line *line, unsigned int lineno)
5849 {
5850 struct commit *commit = line->data;
5852 if (!commit->author)
5853 return FALSE;
5855 if (opt_date && draw_date(view, &commit->time))
5856 return TRUE;
5858 if (opt_author && draw_author(view, commit->author))
5859 return TRUE;
5861 if (opt_rev_graph && commit->graph_size &&
5862 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5863 return TRUE;
5865 if (opt_show_refs && commit->refs) {
5866 size_t i = 0;
5868 do {
5869 enum line_type type;
5871 if (commit->refs[i]->head)
5872 type = LINE_MAIN_HEAD;
5873 else if (commit->refs[i]->ltag)
5874 type = LINE_MAIN_LOCAL_TAG;
5875 else if (commit->refs[i]->tag)
5876 type = LINE_MAIN_TAG;
5877 else if (commit->refs[i]->tracked)
5878 type = LINE_MAIN_TRACKED;
5879 else if (commit->refs[i]->remote)
5880 type = LINE_MAIN_REMOTE;
5881 else
5882 type = LINE_MAIN_REF;
5884 if (draw_text(view, type, "[", TRUE) ||
5885 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5886 draw_text(view, type, "]", TRUE))
5887 return TRUE;
5889 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5890 return TRUE;
5891 } while (commit->refs[i++]->next);
5892 }
5894 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5895 return TRUE;
5896 }
5898 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5899 static bool
5900 main_read(struct view *view, char *line)
5901 {
5902 static struct rev_graph *graph = graph_stacks;
5903 enum line_type type;
5904 struct commit *commit;
5906 if (!line) {
5907 int i;
5909 if (!view->lines && !view->parent)
5910 die("No revisions match the given arguments.");
5911 if (view->lines > 0) {
5912 commit = view->line[view->lines - 1].data;
5913 view->line[view->lines - 1].dirty = 1;
5914 if (!commit->author) {
5915 view->lines--;
5916 free(commit);
5917 graph->commit = NULL;
5918 }
5919 }
5920 update_rev_graph(view, graph);
5922 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5923 clear_rev_graph(&graph_stacks[i]);
5924 return TRUE;
5925 }
5927 type = get_line_type(line);
5928 if (type == LINE_COMMIT) {
5929 commit = calloc(1, sizeof(struct commit));
5930 if (!commit)
5931 return FALSE;
5933 line += STRING_SIZE("commit ");
5934 if (*line == '-') {
5935 graph->boundary = 1;
5936 line++;
5937 }
5939 string_copy_rev(commit->id, line);
5940 commit->refs = get_refs(commit->id);
5941 graph->commit = commit;
5942 add_line_data(view, commit, LINE_MAIN_COMMIT);
5944 while ((line = strchr(line, ' '))) {
5945 line++;
5946 push_rev_graph(graph->parents, line);
5947 commit->has_parents = TRUE;
5948 }
5949 return TRUE;
5950 }
5952 if (!view->lines)
5953 return TRUE;
5954 commit = view->line[view->lines - 1].data;
5956 switch (type) {
5957 case LINE_PARENT:
5958 if (commit->has_parents)
5959 break;
5960 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5961 break;
5963 case LINE_AUTHOR:
5964 parse_author_line(line + STRING_SIZE("author "),
5965 &commit->author, &commit->time);
5966 update_rev_graph(view, graph);
5967 graph = graph->next;
5968 break;
5970 default:
5971 /* Fill in the commit title if it has not already been set. */
5972 if (commit->title[0])
5973 break;
5975 /* Require titles to start with a non-space character at the
5976 * offset used by git log. */
5977 if (strncmp(line, " ", 4))
5978 break;
5979 line += 4;
5980 /* Well, if the title starts with a whitespace character,
5981 * try to be forgiving. Otherwise we end up with no title. */
5982 while (isspace(*line))
5983 line++;
5984 if (*line == '\0')
5985 break;
5986 /* FIXME: More graceful handling of titles; append "..." to
5987 * shortened titles, etc. */
5989 string_expand(commit->title, sizeof(commit->title), line, 1);
5990 view->line[view->lines - 1].dirty = 1;
5991 }
5993 return TRUE;
5994 }
5996 static enum request
5997 main_request(struct view *view, enum request request, struct line *line)
5998 {
5999 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
6001 switch (request) {
6002 case REQ_ENTER:
6003 open_view(view, REQ_VIEW_DIFF, flags);
6004 break;
6005 case REQ_REFRESH:
6006 load_refs();
6007 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6008 break;
6009 default:
6010 return request;
6011 }
6013 return REQ_NONE;
6014 }
6016 static bool
6017 grep_refs(struct ref **refs, regex_t *regex)
6018 {
6019 regmatch_t pmatch;
6020 size_t i = 0;
6022 if (!opt_show_refs || !refs)
6023 return FALSE;
6024 do {
6025 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6026 return TRUE;
6027 } while (refs[i++]->next);
6029 return FALSE;
6030 }
6032 static bool
6033 main_grep(struct view *view, struct line *line)
6034 {
6035 struct commit *commit = line->data;
6036 const char *text[] = {
6037 commit->title,
6038 opt_author ? commit->author : "",
6039 opt_date ? mkdate(&commit->time) : "",
6040 NULL
6041 };
6043 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6044 }
6046 static void
6047 main_select(struct view *view, struct line *line)
6048 {
6049 struct commit *commit = line->data;
6051 string_copy_rev(view->ref, commit->id);
6052 string_copy_rev(ref_commit, view->ref);
6053 }
6055 static struct view_ops main_ops = {
6056 "commit",
6057 main_argv,
6058 NULL,
6059 main_read,
6060 main_draw,
6061 main_request,
6062 main_grep,
6063 main_select,
6064 };
6067 /*
6068 * Unicode / UTF-8 handling
6069 *
6070 * NOTE: Much of the following code for dealing with Unicode is derived from
6071 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
6072 * src/intl/charset.c from the UTF-8 branch commit elinks-0.11.0-g31f2c28.
6073 */
6075 static inline int
6076 unicode_width(unsigned long c)
6077 {
6078 if (c >= 0x1100 &&
6079 (c <= 0x115f /* Hangul Jamo */
6080 || c == 0x2329
6081 || c == 0x232a
6082 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
6083 /* CJK ... Yi */
6084 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
6085 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
6086 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
6087 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
6088 || (c >= 0xffe0 && c <= 0xffe6)
6089 || (c >= 0x20000 && c <= 0x2fffd)
6090 || (c >= 0x30000 && c <= 0x3fffd)))
6091 return 2;
6093 if (c == '\t')
6094 return opt_tab_size;
6096 return 1;
6097 }
6099 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
6100 * Illegal bytes are set one. */
6101 static const unsigned char utf8_bytes[256] = {
6102 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,
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 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,
6109 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,
6110 };
6112 /* Decode UTF-8 multi-byte representation into a Unicode character. */
6113 static inline unsigned long
6114 utf8_to_unicode(const char *string, size_t length)
6115 {
6116 unsigned long unicode;
6118 switch (length) {
6119 case 1:
6120 unicode = string[0];
6121 break;
6122 case 2:
6123 unicode = (string[0] & 0x1f) << 6;
6124 unicode += (string[1] & 0x3f);
6125 break;
6126 case 3:
6127 unicode = (string[0] & 0x0f) << 12;
6128 unicode += ((string[1] & 0x3f) << 6);
6129 unicode += (string[2] & 0x3f);
6130 break;
6131 case 4:
6132 unicode = (string[0] & 0x0f) << 18;
6133 unicode += ((string[1] & 0x3f) << 12);
6134 unicode += ((string[2] & 0x3f) << 6);
6135 unicode += (string[3] & 0x3f);
6136 break;
6137 case 5:
6138 unicode = (string[0] & 0x0f) << 24;
6139 unicode += ((string[1] & 0x3f) << 18);
6140 unicode += ((string[2] & 0x3f) << 12);
6141 unicode += ((string[3] & 0x3f) << 6);
6142 unicode += (string[4] & 0x3f);
6143 break;
6144 case 6:
6145 unicode = (string[0] & 0x01) << 30;
6146 unicode += ((string[1] & 0x3f) << 24);
6147 unicode += ((string[2] & 0x3f) << 18);
6148 unicode += ((string[3] & 0x3f) << 12);
6149 unicode += ((string[4] & 0x3f) << 6);
6150 unicode += (string[5] & 0x3f);
6151 break;
6152 default:
6153 die("Invalid Unicode length");
6154 }
6156 /* Invalid characters could return the special 0xfffd value but NUL
6157 * should be just as good. */
6158 return unicode > 0xffff ? 0 : unicode;
6159 }
6161 /* Calculates how much of string can be shown within the given maximum width
6162 * and sets trimmed parameter to non-zero value if all of string could not be
6163 * shown. If the reserve flag is TRUE, it will reserve at least one
6164 * trailing character, which can be useful when drawing a delimiter.
6165 *
6166 * Returns the number of bytes to output from string to satisfy max_width. */
6167 static size_t
6168 utf8_length(const char **start, size_t skip, int *width, size_t max_width, int *trimmed, bool reserve)
6169 {
6170 const char *string = *start;
6171 const char *end = strchr(string, '\0');
6172 unsigned char last_bytes = 0;
6173 size_t last_ucwidth = 0;
6175 *width = 0;
6176 *trimmed = 0;
6178 while (string < end) {
6179 int c = *(unsigned char *) string;
6180 unsigned char bytes = utf8_bytes[c];
6181 size_t ucwidth;
6182 unsigned long unicode;
6184 if (string + bytes > end)
6185 break;
6187 /* Change representation to figure out whether
6188 * it is a single- or double-width character. */
6190 unicode = utf8_to_unicode(string, bytes);
6191 /* FIXME: Graceful handling of invalid Unicode character. */
6192 if (!unicode)
6193 break;
6195 ucwidth = unicode_width(unicode);
6196 if (skip > 0) {
6197 skip -= ucwidth <= skip ? ucwidth : skip;
6198 *start += bytes;
6199 }
6200 *width += ucwidth;
6201 if (*width > max_width) {
6202 *trimmed = 1;
6203 *width -= ucwidth;
6204 if (reserve && *width == max_width) {
6205 string -= last_bytes;
6206 *width -= last_ucwidth;
6207 }
6208 break;
6209 }
6211 string += bytes;
6212 last_bytes = ucwidth ? bytes : 0;
6213 last_ucwidth = ucwidth;
6214 }
6216 return string - *start;
6217 }
6220 /*
6221 * Status management
6222 */
6224 /* Whether or not the curses interface has been initialized. */
6225 static bool cursed = FALSE;
6227 /* Terminal hacks and workarounds. */
6228 static bool use_scroll_redrawwin;
6229 static bool use_scroll_status_wclear;
6231 /* The status window is used for polling keystrokes. */
6232 static WINDOW *status_win;
6234 /* Reading from the prompt? */
6235 static bool input_mode = FALSE;
6237 static bool status_empty = FALSE;
6239 /* Update status and title window. */
6240 static void
6241 report(const char *msg, ...)
6242 {
6243 struct view *view = display[current_view];
6245 if (input_mode)
6246 return;
6248 if (!view) {
6249 char buf[SIZEOF_STR];
6250 va_list args;
6252 va_start(args, msg);
6253 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6254 buf[sizeof(buf) - 1] = 0;
6255 buf[sizeof(buf) - 2] = '.';
6256 buf[sizeof(buf) - 3] = '.';
6257 buf[sizeof(buf) - 4] = '.';
6258 }
6259 va_end(args);
6260 die("%s", buf);
6261 }
6263 if (!status_empty || *msg) {
6264 va_list args;
6266 va_start(args, msg);
6268 wmove(status_win, 0, 0);
6269 if (view->has_scrolled && use_scroll_status_wclear)
6270 wclear(status_win);
6271 if (*msg) {
6272 vwprintw(status_win, msg, args);
6273 status_empty = FALSE;
6274 } else {
6275 status_empty = TRUE;
6276 }
6277 wclrtoeol(status_win);
6278 wnoutrefresh(status_win);
6280 va_end(args);
6281 }
6283 update_view_title(view);
6284 }
6286 /* Controls when nodelay should be in effect when polling user input. */
6287 static void
6288 set_nonblocking_input(bool loading)
6289 {
6290 static unsigned int loading_views;
6292 if ((loading == FALSE && loading_views-- == 1) ||
6293 (loading == TRUE && loading_views++ == 0))
6294 nodelay(status_win, loading);
6295 }
6297 static void
6298 init_display(void)
6299 {
6300 const char *term;
6301 int x, y;
6303 /* Initialize the curses library */
6304 if (isatty(STDIN_FILENO)) {
6305 cursed = !!initscr();
6306 opt_tty = stdin;
6307 } else {
6308 /* Leave stdin and stdout alone when acting as a pager. */
6309 opt_tty = fopen("/dev/tty", "r+");
6310 if (!opt_tty)
6311 die("Failed to open /dev/tty");
6312 cursed = !!newterm(NULL, opt_tty, opt_tty);
6313 }
6315 if (!cursed)
6316 die("Failed to initialize curses");
6318 nonl(); /* Disable conversion and detect newlines from input. */
6319 cbreak(); /* Take input chars one at a time, no wait for \n */
6320 noecho(); /* Don't echo input */
6321 leaveok(stdscr, FALSE);
6323 if (has_colors())
6324 init_colors();
6326 getmaxyx(stdscr, y, x);
6327 status_win = newwin(1, 0, y - 1, 0);
6328 if (!status_win)
6329 die("Failed to create status window");
6331 /* Enable keyboard mapping */
6332 keypad(status_win, TRUE);
6333 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6335 TABSIZE = opt_tab_size;
6336 if (opt_line_graphics) {
6337 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
6338 }
6340 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6341 if (term && !strcmp(term, "gnome-terminal")) {
6342 /* In the gnome-terminal-emulator, the message from
6343 * scrolling up one line when impossible followed by
6344 * scrolling down one line causes corruption of the
6345 * status line. This is fixed by calling wclear. */
6346 use_scroll_status_wclear = TRUE;
6347 use_scroll_redrawwin = FALSE;
6349 } else if (term && !strcmp(term, "xrvt-xpm")) {
6350 /* No problems with full optimizations in xrvt-(unicode)
6351 * and aterm. */
6352 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6354 } else {
6355 /* When scrolling in (u)xterm the last line in the
6356 * scrolling direction will update slowly. */
6357 use_scroll_redrawwin = TRUE;
6358 use_scroll_status_wclear = FALSE;
6359 }
6360 }
6362 static int
6363 get_input(int prompt_position)
6364 {
6365 struct view *view;
6366 int i, key, cursor_y, cursor_x;
6368 if (prompt_position)
6369 input_mode = TRUE;
6371 while (TRUE) {
6372 foreach_view (view, i) {
6373 update_view(view);
6374 if (view_is_displayed(view) && view->has_scrolled &&
6375 use_scroll_redrawwin)
6376 redrawwin(view->win);
6377 view->has_scrolled = FALSE;
6378 }
6380 /* Update the cursor position. */
6381 if (prompt_position) {
6382 getbegyx(status_win, cursor_y, cursor_x);
6383 cursor_x = prompt_position;
6384 } else {
6385 view = display[current_view];
6386 getbegyx(view->win, cursor_y, cursor_x);
6387 cursor_x = view->width - 1;
6388 cursor_y += view->lineno - view->offset;
6389 }
6390 setsyx(cursor_y, cursor_x);
6392 /* Refresh, accept single keystroke of input */
6393 doupdate();
6394 key = wgetch(status_win);
6396 /* wgetch() with nodelay() enabled returns ERR when
6397 * there's no input. */
6398 if (key == ERR) {
6400 } else if (key == KEY_RESIZE) {
6401 int height, width;
6403 getmaxyx(stdscr, height, width);
6405 wresize(status_win, 1, width);
6406 mvwin(status_win, height - 1, 0);
6407 wnoutrefresh(status_win);
6408 resize_display();
6409 redraw_display(TRUE);
6411 } else {
6412 input_mode = FALSE;
6413 return key;
6414 }
6415 }
6416 }
6418 static char *
6419 prompt_input(const char *prompt, input_handler handler, void *data)
6420 {
6421 enum input_status status = INPUT_OK;
6422 static char buf[SIZEOF_STR];
6423 size_t pos = 0;
6425 buf[pos] = 0;
6427 while (status == INPUT_OK || status == INPUT_SKIP) {
6428 int key;
6430 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6431 wclrtoeol(status_win);
6433 key = get_input(pos + 1);
6434 switch (key) {
6435 case KEY_RETURN:
6436 case KEY_ENTER:
6437 case '\n':
6438 status = pos ? INPUT_STOP : INPUT_CANCEL;
6439 break;
6441 case KEY_BACKSPACE:
6442 if (pos > 0)
6443 buf[--pos] = 0;
6444 else
6445 status = INPUT_CANCEL;
6446 break;
6448 case KEY_ESC:
6449 status = INPUT_CANCEL;
6450 break;
6452 default:
6453 if (pos >= sizeof(buf)) {
6454 report("Input string too long");
6455 return NULL;
6456 }
6458 status = handler(data, buf, key);
6459 if (status == INPUT_OK)
6460 buf[pos++] = (char) key;
6461 }
6462 }
6464 /* Clear the status window */
6465 status_empty = FALSE;
6466 report("");
6468 if (status == INPUT_CANCEL)
6469 return NULL;
6471 buf[pos++] = 0;
6473 return buf;
6474 }
6476 static enum input_status
6477 prompt_yesno_handler(void *data, char *buf, int c)
6478 {
6479 if (c == 'y' || c == 'Y')
6480 return INPUT_STOP;
6481 if (c == 'n' || c == 'N')
6482 return INPUT_CANCEL;
6483 return INPUT_SKIP;
6484 }
6486 static bool
6487 prompt_yesno(const char *prompt)
6488 {
6489 char prompt2[SIZEOF_STR];
6491 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6492 return FALSE;
6494 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6495 }
6497 static enum input_status
6498 read_prompt_handler(void *data, char *buf, int c)
6499 {
6500 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6501 }
6503 static char *
6504 read_prompt(const char *prompt)
6505 {
6506 return prompt_input(prompt, read_prompt_handler, NULL);
6507 }
6509 /*
6510 * Repository properties
6511 */
6513 static struct ref *refs = NULL;
6514 static size_t refs_size = 0;
6516 /* Id <-> ref store */
6517 static struct ref ***id_refs = NULL;
6518 static size_t id_refs_size = 0;
6520 DEFINE_ALLOCATOR(realloc_refs, struct ref, 256)
6521 DEFINE_ALLOCATOR(realloc_refs_list, struct ref *, 8)
6522 DEFINE_ALLOCATOR(realloc_refs_lists, struct ref **, 8)
6524 static int
6525 compare_refs(const void *ref1_, const void *ref2_)
6526 {
6527 const struct ref *ref1 = *(const struct ref **)ref1_;
6528 const struct ref *ref2 = *(const struct ref **)ref2_;
6530 if (ref1->tag != ref2->tag)
6531 return ref2->tag - ref1->tag;
6532 if (ref1->ltag != ref2->ltag)
6533 return ref2->ltag - ref2->ltag;
6534 if (ref1->head != ref2->head)
6535 return ref2->head - ref1->head;
6536 if (ref1->tracked != ref2->tracked)
6537 return ref2->tracked - ref1->tracked;
6538 if (ref1->remote != ref2->remote)
6539 return ref2->remote - ref1->remote;
6540 return strcmp(ref1->name, ref2->name);
6541 }
6543 static struct ref **
6544 get_refs(const char *id)
6545 {
6546 struct ref **ref_list = NULL;
6547 size_t ref_list_size = 0;
6548 size_t i;
6550 for (i = 0; i < id_refs_size; i++)
6551 if (!strcmp(id, id_refs[i][0]->id))
6552 return id_refs[i];
6554 if (!realloc_refs_lists(&id_refs, id_refs_size, 1))
6555 return NULL;
6557 for (i = 0; i < refs_size; i++) {
6558 if (strcmp(id, refs[i].id))
6559 continue;
6561 if (!realloc_refs_list(&ref_list, ref_list_size, 1))
6562 return ref_list;
6564 ref_list[ref_list_size] = &refs[i];
6565 /* XXX: The properties of the commit chains ensures that we can
6566 * safely modify the shared ref. The repo references will
6567 * always be similar for the same id. */
6568 ref_list[ref_list_size]->next = 1;
6569 ref_list_size++;
6570 }
6572 if (ref_list) {
6573 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6574 ref_list[ref_list_size - 1]->next = 0;
6575 id_refs[id_refs_size++] = ref_list;
6576 }
6578 return ref_list;
6579 }
6581 static int
6582 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6583 {
6584 struct ref *ref;
6585 bool tag = FALSE;
6586 bool ltag = FALSE;
6587 bool remote = FALSE;
6588 bool tracked = FALSE;
6589 bool check_replace = FALSE;
6590 bool head = FALSE;
6592 if (!prefixcmp(name, "refs/tags/")) {
6593 if (!suffixcmp(name, namelen, "^{}")) {
6594 namelen -= 3;
6595 name[namelen] = 0;
6596 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6597 check_replace = TRUE;
6598 } else {
6599 ltag = TRUE;
6600 }
6602 tag = TRUE;
6603 namelen -= STRING_SIZE("refs/tags/");
6604 name += STRING_SIZE("refs/tags/");
6606 } else if (!prefixcmp(name, "refs/remotes/")) {
6607 remote = TRUE;
6608 namelen -= STRING_SIZE("refs/remotes/");
6609 name += STRING_SIZE("refs/remotes/");
6610 tracked = !strcmp(opt_remote, name);
6612 } else if (!prefixcmp(name, "refs/heads/")) {
6613 namelen -= STRING_SIZE("refs/heads/");
6614 name += STRING_SIZE("refs/heads/");
6615 head = !strncmp(opt_head, name, namelen);
6617 } else if (!strcmp(name, "HEAD")) {
6618 string_ncopy(opt_head_rev, id, idlen);
6619 return OK;
6620 }
6622 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6623 /* it's an annotated tag, replace the previous SHA1 with the
6624 * resolved commit id; relies on the fact git-ls-remote lists
6625 * the commit id of an annotated tag right before the commit id
6626 * it points to. */
6627 refs[refs_size - 1].ltag = ltag;
6628 string_copy_rev(refs[refs_size - 1].id, id);
6630 return OK;
6631 }
6633 if (!realloc_refs(&refs, refs_size, 1))
6634 return ERR;
6636 ref = &refs[refs_size++];
6637 ref->name = malloc(namelen + 1);
6638 if (!ref->name)
6639 return ERR;
6641 strncpy(ref->name, name, namelen);
6642 ref->name[namelen] = 0;
6643 ref->head = head;
6644 ref->tag = tag;
6645 ref->ltag = ltag;
6646 ref->remote = remote;
6647 ref->tracked = tracked;
6648 string_copy_rev(ref->id, id);
6650 return OK;
6651 }
6653 static int
6654 load_refs(void)
6655 {
6656 const char *head_argv[] = {
6657 "git", "symbolic-ref", "HEAD", NULL
6658 };
6659 static const char *ls_remote_argv[SIZEOF_ARG] = {
6660 "git", "ls-remote", opt_git_dir, NULL
6661 };
6662 static bool init = FALSE;
6664 if (!init) {
6665 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6666 init = TRUE;
6667 }
6669 if (!*opt_git_dir)
6670 return OK;
6672 if (run_io_buf(head_argv, opt_head, sizeof(opt_head)) &&
6673 !prefixcmp(opt_head, "refs/heads/")) {
6674 char *offset = opt_head + STRING_SIZE("refs/heads/");
6676 memmove(opt_head, offset, strlen(offset) + 1);
6677 }
6679 while (refs_size > 0)
6680 free(refs[--refs_size].name);
6681 while (id_refs_size > 0)
6682 free(id_refs[--id_refs_size]);
6684 return run_io_load(ls_remote_argv, "\t", read_ref);
6685 }
6687 static void
6688 set_remote_branch(const char *name, const char *value, size_t valuelen)
6689 {
6690 if (!strcmp(name, ".remote")) {
6691 string_ncopy(opt_remote, value, valuelen);
6693 } else if (*opt_remote && !strcmp(name, ".merge")) {
6694 size_t from = strlen(opt_remote);
6696 if (!prefixcmp(value, "refs/heads/"))
6697 value += STRING_SIZE("refs/heads/");
6699 if (!string_format_from(opt_remote, &from, "/%s", value))
6700 opt_remote[0] = 0;
6701 }
6702 }
6704 static void
6705 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
6706 {
6707 const char *argv[SIZEOF_ARG] = { name, "=" };
6708 int argc = 1 + (cmd == option_set_command);
6709 int error = ERR;
6711 if (!argv_from_string(argv, &argc, value))
6712 config_msg = "Too many option arguments";
6713 else
6714 error = cmd(argc, argv);
6716 if (error == ERR)
6717 warn("Option 'tig.%s': %s", name, config_msg);
6718 }
6720 static bool
6721 set_environment_variable(const char *name, const char *value)
6722 {
6723 size_t len = strlen(name) + 1 + strlen(value) + 1;
6724 char *env = malloc(len);
6726 if (env &&
6727 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6728 putenv(env) == 0)
6729 return TRUE;
6730 free(env);
6731 return FALSE;
6732 }
6734 static void
6735 set_work_tree(const char *value)
6736 {
6737 char cwd[SIZEOF_STR];
6739 if (!getcwd(cwd, sizeof(cwd)))
6740 die("Failed to get cwd path: %s", strerror(errno));
6741 if (chdir(opt_git_dir) < 0)
6742 die("Failed to chdir(%s): %s", strerror(errno));
6743 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6744 die("Failed to get git path: %s", strerror(errno));
6745 if (chdir(cwd) < 0)
6746 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6747 if (chdir(value) < 0)
6748 die("Failed to chdir(%s): %s", value, strerror(errno));
6749 if (!getcwd(cwd, sizeof(cwd)))
6750 die("Failed to get cwd path: %s", strerror(errno));
6751 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6752 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6753 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6754 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6755 opt_is_inside_work_tree = TRUE;
6756 }
6758 static int
6759 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6760 {
6761 if (!strcmp(name, "i18n.commitencoding"))
6762 string_ncopy(opt_encoding, value, valuelen);
6764 else if (!strcmp(name, "core.editor"))
6765 string_ncopy(opt_editor, value, valuelen);
6767 else if (!strcmp(name, "core.worktree"))
6768 set_work_tree(value);
6770 else if (!prefixcmp(name, "tig.color."))
6771 set_repo_config_option(name + 10, value, option_color_command);
6773 else if (!prefixcmp(name, "tig.bind."))
6774 set_repo_config_option(name + 9, value, option_bind_command);
6776 else if (!prefixcmp(name, "tig."))
6777 set_repo_config_option(name + 4, value, option_set_command);
6779 else if (*opt_head && !prefixcmp(name, "branch.") &&
6780 !strncmp(name + 7, opt_head, strlen(opt_head)))
6781 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6783 return OK;
6784 }
6786 static int
6787 load_git_config(void)
6788 {
6789 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6791 return run_io_load(config_list_argv, "=", read_repo_config_option);
6792 }
6794 static int
6795 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6796 {
6797 if (!opt_git_dir[0]) {
6798 string_ncopy(opt_git_dir, name, namelen);
6800 } else if (opt_is_inside_work_tree == -1) {
6801 /* This can be 3 different values depending on the
6802 * version of git being used. If git-rev-parse does not
6803 * understand --is-inside-work-tree it will simply echo
6804 * the option else either "true" or "false" is printed.
6805 * Default to true for the unknown case. */
6806 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6808 } else if (*name == '.') {
6809 string_ncopy(opt_cdup, name, namelen);
6811 } else {
6812 string_ncopy(opt_prefix, name, namelen);
6813 }
6815 return OK;
6816 }
6818 static int
6819 load_repo_info(void)
6820 {
6821 const char *rev_parse_argv[] = {
6822 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6823 "--show-cdup", "--show-prefix", NULL
6824 };
6826 return run_io_load(rev_parse_argv, "=", read_repo_info);
6827 }
6830 /*
6831 * Main
6832 */
6834 static const char usage[] =
6835 "tig " TIG_VERSION " (" __DATE__ ")\n"
6836 "\n"
6837 "Usage: tig [options] [revs] [--] [paths]\n"
6838 " or: tig show [options] [revs] [--] [paths]\n"
6839 " or: tig blame [rev] path\n"
6840 " or: tig status\n"
6841 " or: tig < [git command output]\n"
6842 "\n"
6843 "Options:\n"
6844 " -v, --version Show version and exit\n"
6845 " -h, --help Show help message and exit";
6847 static void __NORETURN
6848 quit(int sig)
6849 {
6850 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6851 if (cursed)
6852 endwin();
6853 exit(0);
6854 }
6856 static void __NORETURN
6857 die(const char *err, ...)
6858 {
6859 va_list args;
6861 endwin();
6863 va_start(args, err);
6864 fputs("tig: ", stderr);
6865 vfprintf(stderr, err, args);
6866 fputs("\n", stderr);
6867 va_end(args);
6869 exit(1);
6870 }
6872 static void
6873 warn(const char *msg, ...)
6874 {
6875 va_list args;
6877 va_start(args, msg);
6878 fputs("tig warning: ", stderr);
6879 vfprintf(stderr, msg, args);
6880 fputs("\n", stderr);
6881 va_end(args);
6882 }
6884 static enum request
6885 parse_options(int argc, const char *argv[])
6886 {
6887 enum request request = REQ_VIEW_MAIN;
6888 const char *subcommand;
6889 bool seen_dashdash = FALSE;
6890 /* XXX: This is vulnerable to the user overriding options
6891 * required for the main view parser. */
6892 const char *custom_argv[SIZEOF_ARG] = {
6893 "git", "log", "--no-color", "--pretty=raw", "--parents",
6894 "--topo-order", NULL
6895 };
6896 int i, j = 6;
6898 if (!isatty(STDIN_FILENO)) {
6899 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
6900 return REQ_VIEW_PAGER;
6901 }
6903 if (argc <= 1)
6904 return REQ_NONE;
6906 subcommand = argv[1];
6907 if (!strcmp(subcommand, "status")) {
6908 if (argc > 2)
6909 warn("ignoring arguments after `%s'", subcommand);
6910 return REQ_VIEW_STATUS;
6912 } else if (!strcmp(subcommand, "blame")) {
6913 if (argc <= 2 || argc > 4)
6914 die("invalid number of options to blame\n\n%s", usage);
6916 i = 2;
6917 if (argc == 4) {
6918 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
6919 i++;
6920 }
6922 string_ncopy(opt_file, argv[i], strlen(argv[i]));
6923 return REQ_VIEW_BLAME;
6925 } else if (!strcmp(subcommand, "show")) {
6926 request = REQ_VIEW_DIFF;
6928 } else {
6929 subcommand = NULL;
6930 }
6932 if (subcommand) {
6933 custom_argv[1] = subcommand;
6934 j = 2;
6935 }
6937 for (i = 1 + !!subcommand; i < argc; i++) {
6938 const char *opt = argv[i];
6940 if (seen_dashdash || !strcmp(opt, "--")) {
6941 seen_dashdash = TRUE;
6943 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6944 printf("tig version %s\n", TIG_VERSION);
6945 quit(0);
6947 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6948 printf("%s\n", usage);
6949 quit(0);
6950 }
6952 custom_argv[j++] = opt;
6953 if (j >= ARRAY_SIZE(custom_argv))
6954 die("command too long");
6955 }
6957 if (!prepare_update(VIEW(request), custom_argv, NULL, FORMAT_NONE))
6958 die("Failed to format arguments");
6960 return request;
6961 }
6963 int
6964 main(int argc, const char *argv[])
6965 {
6966 enum request request = parse_options(argc, argv);
6967 struct view *view;
6968 size_t i;
6970 signal(SIGINT, quit);
6971 signal(SIGPIPE, SIG_IGN);
6973 if (setlocale(LC_ALL, "")) {
6974 char *codeset = nl_langinfo(CODESET);
6976 string_ncopy(opt_codeset, codeset, strlen(codeset));
6977 }
6979 if (load_repo_info() == ERR)
6980 die("Failed to load repo info.");
6982 if (load_options() == ERR)
6983 die("Failed to load user config.");
6985 if (load_git_config() == ERR)
6986 die("Failed to load repo config.");
6988 /* Require a git repository unless when running in pager mode. */
6989 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6990 die("Not a git repository");
6992 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6993 opt_utf8 = FALSE;
6995 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6996 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6997 if (opt_iconv == ICONV_NONE)
6998 die("Failed to initialize character set conversion");
6999 }
7001 if (load_refs() == ERR)
7002 die("Failed to load refs.");
7004 foreach_view (view, i)
7005 argv_from_env(view->ops->argv, view->cmd_env);
7007 init_display();
7009 if (request != REQ_NONE)
7010 open_view(NULL, request, OPEN_PREPARED);
7011 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7013 while (view_driver(display[current_view], request)) {
7014 int key = get_input(0);
7016 view = display[current_view];
7017 request = get_keybinding(view->keymap, key);
7019 /* Some low-level request handling. This keeps access to
7020 * status_win restricted. */
7021 switch (request) {
7022 case REQ_PROMPT:
7023 {
7024 char *cmd = read_prompt(":");
7026 if (cmd && isdigit(*cmd)) {
7027 int lineno = view->lineno + 1;
7029 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7030 select_view_line(view, lineno - 1);
7031 report("");
7032 } else {
7033 report("Unable to parse '%s' as a line number", cmd);
7034 }
7036 } else if (cmd) {
7037 struct view *next = VIEW(REQ_VIEW_PAGER);
7038 const char *argv[SIZEOF_ARG] = { "git" };
7039 int argc = 1;
7041 /* When running random commands, initially show the
7042 * command in the title. However, it maybe later be
7043 * overwritten if a commit line is selected. */
7044 string_ncopy(next->ref, cmd, strlen(cmd));
7046 if (!argv_from_string(argv, &argc, cmd)) {
7047 report("Too many arguments");
7048 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
7049 report("Failed to format command");
7050 } else {
7051 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7052 }
7053 }
7055 request = REQ_NONE;
7056 break;
7057 }
7058 case REQ_SEARCH:
7059 case REQ_SEARCH_BACK:
7060 {
7061 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7062 char *search = read_prompt(prompt);
7064 if (search)
7065 string_ncopy(opt_search, search, strlen(search));
7066 else if (*opt_search)
7067 request = request == REQ_SEARCH ?
7068 REQ_FIND_NEXT :
7069 REQ_FIND_PREV;
7070 else
7071 request = REQ_NONE;
7072 break;
7073 }
7074 default:
7075 break;
7076 }
7077 }
7079 quit(0);
7081 return 0;
7082 }