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 * String helpers
166 */
168 static inline void
169 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
170 {
171 if (srclen > dstlen - 1)
172 srclen = dstlen - 1;
174 strncpy(dst, src, srclen);
175 dst[srclen] = 0;
176 }
178 /* Shorthands for safely copying into a fixed buffer. */
180 #define string_copy(dst, src) \
181 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
183 #define string_ncopy(dst, src, srclen) \
184 string_ncopy_do(dst, sizeof(dst), src, srclen)
186 #define string_copy_rev(dst, src) \
187 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
189 #define string_add(dst, from, src) \
190 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
192 static void
193 string_expand(char *dst, size_t dstlen, const char *src, int tabsize)
194 {
195 size_t size, pos;
197 for (size = pos = 0; size < dstlen - 1 && src[pos]; pos++) {
198 if (src[pos] == '\t') {
199 size_t expanded = tabsize - (size % tabsize);
201 if (expanded + size >= dstlen - 1)
202 expanded = dstlen - size - 1;
203 memcpy(dst + size, " ", expanded);
204 size += expanded;
205 } else {
206 dst[size++] = src[pos];
207 }
208 }
210 dst[size] = 0;
211 }
213 static char *
214 chomp_string(char *name)
215 {
216 int namelen;
218 while (isspace(*name))
219 name++;
221 namelen = strlen(name) - 1;
222 while (namelen > 0 && isspace(name[namelen]))
223 name[namelen--] = 0;
225 return name;
226 }
228 static bool
229 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
230 {
231 va_list args;
232 size_t pos = bufpos ? *bufpos : 0;
234 va_start(args, fmt);
235 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
236 va_end(args);
238 if (bufpos)
239 *bufpos = pos;
241 return pos >= bufsize ? FALSE : TRUE;
242 }
244 #define string_format(buf, fmt, args...) \
245 string_nformat(buf, sizeof(buf), NULL, fmt, args)
247 #define string_format_from(buf, from, fmt, args...) \
248 string_nformat(buf, sizeof(buf), from, fmt, args)
250 static int
251 string_enum_compare(const char *str1, const char *str2, int len)
252 {
253 size_t i;
255 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
257 /* Diff-Header == DIFF_HEADER */
258 for (i = 0; i < len; i++) {
259 if (toupper(str1[i]) == toupper(str2[i]))
260 continue;
262 if (string_enum_sep(str1[i]) &&
263 string_enum_sep(str2[i]))
264 continue;
266 return str1[i] - str2[i];
267 }
269 return 0;
270 }
272 struct enum_map {
273 const char *name;
274 int namelen;
275 int value;
276 };
278 #define ENUM_MAP(name, value) { name, STRING_SIZE(name), value }
280 static bool
281 map_enum_do(const struct enum_map *map, size_t map_size, int *value, const char *name)
282 {
283 size_t namelen = strlen(name);
284 int i;
286 for (i = 0; i < map_size; i++)
287 if (namelen == map[i].namelen &&
288 !string_enum_compare(name, map[i].name, namelen)) {
289 *value = map[i].value;
290 return TRUE;
291 }
293 return FALSE;
294 }
296 #define map_enum(attr, map, name) \
297 map_enum_do(map, ARRAY_SIZE(map), attr, name)
299 #define prefixcmp(str1, str2) \
300 strncmp(str1, str2, STRING_SIZE(str2))
302 static inline int
303 suffixcmp(const char *str, int slen, const char *suffix)
304 {
305 size_t len = slen >= 0 ? slen : strlen(str);
306 size_t suffixlen = strlen(suffix);
308 return suffixlen < len ? strcmp(str + len - suffixlen, suffix) : -1;
309 }
312 static bool
313 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
314 {
315 int valuelen;
317 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
318 bool advance = cmd[valuelen] != 0;
320 cmd[valuelen] = 0;
321 argv[(*argc)++] = chomp_string(cmd);
322 cmd = chomp_string(cmd + valuelen + advance);
323 }
325 if (*argc < SIZEOF_ARG)
326 argv[*argc] = NULL;
327 return *argc < SIZEOF_ARG;
328 }
330 static void
331 argv_from_env(const char **argv, const char *name)
332 {
333 char *env = argv ? getenv(name) : NULL;
334 int argc = 0;
336 if (env && *env)
337 env = strdup(env);
338 if (env && !argv_from_string(argv, &argc, env))
339 die("Too many arguments in the `%s` environment variable", name);
340 }
343 /*
344 * Executing external commands.
345 */
347 enum io_type {
348 IO_FD, /* File descriptor based IO. */
349 IO_BG, /* Execute command in the background. */
350 IO_FG, /* Execute command with same std{in,out,err}. */
351 IO_RD, /* Read only fork+exec IO. */
352 IO_WR, /* Write only fork+exec IO. */
353 IO_AP, /* Append fork+exec output to file. */
354 };
356 struct io {
357 enum io_type type; /* The requested type of pipe. */
358 const char *dir; /* Directory from which to execute. */
359 pid_t pid; /* Pipe for reading or writing. */
360 int pipe; /* Pipe end for reading or writing. */
361 int error; /* Error status. */
362 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
363 char *buf; /* Read buffer. */
364 size_t bufalloc; /* Allocated buffer size. */
365 size_t bufsize; /* Buffer content size. */
366 char *bufpos; /* Current buffer position. */
367 unsigned int eof:1; /* Has end of file been reached. */
368 };
370 static void
371 reset_io(struct io *io)
372 {
373 io->pipe = -1;
374 io->pid = 0;
375 io->buf = io->bufpos = NULL;
376 io->bufalloc = io->bufsize = 0;
377 io->error = 0;
378 io->eof = 0;
379 }
381 static void
382 init_io(struct io *io, const char *dir, enum io_type type)
383 {
384 reset_io(io);
385 io->type = type;
386 io->dir = dir;
387 }
389 static bool
390 init_io_rd(struct io *io, const char *argv[], const char *dir,
391 enum format_flags flags)
392 {
393 init_io(io, dir, IO_RD);
394 return format_argv(io->argv, argv, flags);
395 }
397 static bool
398 io_open(struct io *io, const char *name)
399 {
400 init_io(io, NULL, IO_FD);
401 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
402 if (io->pipe == -1)
403 io->error = errno;
404 return io->pipe != -1;
405 }
407 static bool
408 kill_io(struct io *io)
409 {
410 return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
411 }
413 static bool
414 done_io(struct io *io)
415 {
416 pid_t pid = io->pid;
418 if (io->pipe != -1)
419 close(io->pipe);
420 free(io->buf);
421 reset_io(io);
423 while (pid > 0) {
424 int status;
425 pid_t waiting = waitpid(pid, &status, 0);
427 if (waiting < 0) {
428 if (errno == EINTR)
429 continue;
430 report("waitpid failed (%s)", strerror(errno));
431 return FALSE;
432 }
434 return waiting == pid &&
435 !WIFSIGNALED(status) &&
436 WIFEXITED(status) &&
437 !WEXITSTATUS(status);
438 }
440 return TRUE;
441 }
443 static bool
444 start_io(struct io *io)
445 {
446 int pipefds[2] = { -1, -1 };
448 if (io->type == IO_FD)
449 return TRUE;
451 if ((io->type == IO_RD || io->type == IO_WR) &&
452 pipe(pipefds) < 0)
453 return FALSE;
454 else if (io->type == IO_AP)
455 pipefds[1] = io->pipe;
457 if ((io->pid = fork())) {
458 if (pipefds[!(io->type == IO_WR)] != -1)
459 close(pipefds[!(io->type == IO_WR)]);
460 if (io->pid != -1) {
461 io->pipe = pipefds[!!(io->type == IO_WR)];
462 return TRUE;
463 }
465 } else {
466 if (io->type != IO_FG) {
467 int devnull = open("/dev/null", O_RDWR);
468 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
469 int writefd = (io->type == IO_RD || io->type == IO_AP)
470 ? pipefds[1] : devnull;
472 dup2(readfd, STDIN_FILENO);
473 dup2(writefd, STDOUT_FILENO);
474 dup2(devnull, STDERR_FILENO);
476 close(devnull);
477 if (pipefds[0] != -1)
478 close(pipefds[0]);
479 if (pipefds[1] != -1)
480 close(pipefds[1]);
481 }
483 if (io->dir && *io->dir && chdir(io->dir) == -1)
484 die("Failed to change directory: %s", strerror(errno));
486 execvp(io->argv[0], (char *const*) io->argv);
487 die("Failed to execute program: %s", strerror(errno));
488 }
490 if (pipefds[!!(io->type == IO_WR)] != -1)
491 close(pipefds[!!(io->type == IO_WR)]);
492 return FALSE;
493 }
495 static bool
496 run_io(struct io *io, const char **argv, const char *dir, enum io_type type)
497 {
498 init_io(io, dir, type);
499 if (!format_argv(io->argv, argv, FORMAT_NONE))
500 return FALSE;
501 return start_io(io);
502 }
504 static int
505 run_io_do(struct io *io)
506 {
507 return start_io(io) && done_io(io);
508 }
510 static int
511 run_io_bg(const char **argv)
512 {
513 struct io io = {};
515 init_io(&io, NULL, IO_BG);
516 if (!format_argv(io.argv, argv, FORMAT_NONE))
517 return FALSE;
518 return run_io_do(&io);
519 }
521 static bool
522 run_io_fg(const char **argv, const char *dir)
523 {
524 struct io io = {};
526 init_io(&io, dir, IO_FG);
527 if (!format_argv(io.argv, argv, FORMAT_NONE))
528 return FALSE;
529 return run_io_do(&io);
530 }
532 static bool
533 run_io_append(const char **argv, enum format_flags flags, int fd)
534 {
535 struct io io = {};
537 init_io(&io, NULL, IO_AP);
538 io.pipe = fd;
539 if (format_argv(io.argv, argv, flags))
540 return run_io_do(&io);
541 close(fd);
542 return FALSE;
543 }
545 static bool
546 run_io_rd(struct io *io, const char **argv, enum format_flags flags)
547 {
548 return init_io_rd(io, argv, NULL, flags) && start_io(io);
549 }
551 static bool
552 io_eof(struct io *io)
553 {
554 return io->eof;
555 }
557 static int
558 io_error(struct io *io)
559 {
560 return io->error;
561 }
563 static char *
564 io_strerror(struct io *io)
565 {
566 return strerror(io->error);
567 }
569 static bool
570 io_can_read(struct io *io)
571 {
572 struct timeval tv = { 0, 500 };
573 fd_set fds;
575 FD_ZERO(&fds);
576 FD_SET(io->pipe, &fds);
578 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
579 }
581 static ssize_t
582 io_read(struct io *io, void *buf, size_t bufsize)
583 {
584 do {
585 ssize_t readsize = read(io->pipe, buf, bufsize);
587 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
588 continue;
589 else if (readsize == -1)
590 io->error = errno;
591 else if (readsize == 0)
592 io->eof = 1;
593 return readsize;
594 } while (1);
595 }
597 static char *
598 io_get(struct io *io, int c, bool can_read)
599 {
600 char *eol;
601 ssize_t readsize;
603 if (!io->buf) {
604 io->buf = io->bufpos = malloc(BUFSIZ);
605 if (!io->buf)
606 return NULL;
607 io->bufalloc = BUFSIZ;
608 io->bufsize = 0;
609 }
611 while (TRUE) {
612 if (io->bufsize > 0) {
613 eol = memchr(io->bufpos, c, io->bufsize);
614 if (eol) {
615 char *line = io->bufpos;
617 *eol = 0;
618 io->bufpos = eol + 1;
619 io->bufsize -= io->bufpos - line;
620 return line;
621 }
622 }
624 if (io_eof(io)) {
625 if (io->bufsize) {
626 io->bufpos[io->bufsize] = 0;
627 io->bufsize = 0;
628 return io->bufpos;
629 }
630 return NULL;
631 }
633 if (!can_read)
634 return NULL;
636 if (io->bufsize > 0 && io->bufpos > io->buf)
637 memmove(io->buf, io->bufpos, io->bufsize);
639 io->bufpos = io->buf;
640 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
641 if (io_error(io))
642 return NULL;
643 io->bufsize += readsize;
644 }
645 }
647 static bool
648 io_write(struct io *io, const void *buf, size_t bufsize)
649 {
650 size_t written = 0;
652 while (!io_error(io) && written < bufsize) {
653 ssize_t size;
655 size = write(io->pipe, buf + written, bufsize - written);
656 if (size < 0 && (errno == EAGAIN || errno == EINTR))
657 continue;
658 else if (size == -1)
659 io->error = errno;
660 else
661 written += size;
662 }
664 return written == bufsize;
665 }
667 static bool
668 io_read_buf(struct io *io, char buf[], size_t bufsize)
669 {
670 bool error;
672 io->buf = io->bufpos = buf;
673 io->bufalloc = bufsize;
674 error = !io_get(io, '\n', TRUE) && io_error(io);
675 io->buf = NULL;
677 return done_io(io) || error;
678 }
680 static bool
681 run_io_buf(const char **argv, char buf[], size_t bufsize)
682 {
683 struct io io = {};
685 return run_io_rd(&io, argv, FORMAT_NONE) && io_read_buf(&io, buf, bufsize);
686 }
688 static int
689 io_load(struct io *io, const char *separators,
690 int (*read_property)(char *, size_t, char *, size_t))
691 {
692 char *name;
693 int state = OK;
695 if (!start_io(io))
696 return ERR;
698 while (state == OK && (name = io_get(io, '\n', TRUE))) {
699 char *value;
700 size_t namelen;
701 size_t valuelen;
703 name = chomp_string(name);
704 namelen = strcspn(name, separators);
706 if (name[namelen]) {
707 name[namelen] = 0;
708 value = chomp_string(name + namelen + 1);
709 valuelen = strlen(value);
711 } else {
712 value = "";
713 valuelen = 0;
714 }
716 state = read_property(name, namelen, value, valuelen);
717 }
719 if (state != ERR && io_error(io))
720 state = ERR;
721 done_io(io);
723 return state;
724 }
726 static int
727 run_io_load(const char **argv, const char *separators,
728 int (*read_property)(char *, size_t, char *, size_t))
729 {
730 struct io io = {};
732 return init_io_rd(&io, argv, NULL, FORMAT_NONE)
733 ? io_load(&io, separators, read_property) : ERR;
734 }
737 /*
738 * User requests
739 */
741 #define REQ_INFO \
742 /* XXX: Keep the view request first and in sync with views[]. */ \
743 REQ_GROUP("View switching") \
744 REQ_(VIEW_MAIN, "Show main view"), \
745 REQ_(VIEW_DIFF, "Show diff view"), \
746 REQ_(VIEW_LOG, "Show log view"), \
747 REQ_(VIEW_TREE, "Show tree view"), \
748 REQ_(VIEW_BLOB, "Show blob view"), \
749 REQ_(VIEW_BLAME, "Show blame view"), \
750 REQ_(VIEW_HELP, "Show help page"), \
751 REQ_(VIEW_PAGER, "Show pager view"), \
752 REQ_(VIEW_STATUS, "Show status view"), \
753 REQ_(VIEW_STAGE, "Show stage view"), \
754 \
755 REQ_GROUP("View manipulation") \
756 REQ_(ENTER, "Enter current line and scroll"), \
757 REQ_(NEXT, "Move to next"), \
758 REQ_(PREVIOUS, "Move to previous"), \
759 REQ_(PARENT, "Move to parent"), \
760 REQ_(VIEW_NEXT, "Move focus to next view"), \
761 REQ_(REFRESH, "Reload and refresh"), \
762 REQ_(MAXIMIZE, "Maximize the current view"), \
763 REQ_(VIEW_CLOSE, "Close the current view"), \
764 REQ_(QUIT, "Close all views and quit"), \
765 \
766 REQ_GROUP("View specific requests") \
767 REQ_(STATUS_UPDATE, "Update file status"), \
768 REQ_(STATUS_REVERT, "Revert file changes"), \
769 REQ_(STATUS_MERGE, "Merge file using external tool"), \
770 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
771 \
772 REQ_GROUP("Cursor navigation") \
773 REQ_(MOVE_UP, "Move cursor one line up"), \
774 REQ_(MOVE_DOWN, "Move cursor one line down"), \
775 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
776 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
777 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
778 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
779 \
780 REQ_GROUP("Scrolling") \
781 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
782 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
783 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
784 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
785 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
786 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
787 \
788 REQ_GROUP("Searching") \
789 REQ_(SEARCH, "Search the view"), \
790 REQ_(SEARCH_BACK, "Search backwards in the view"), \
791 REQ_(FIND_NEXT, "Find next search match"), \
792 REQ_(FIND_PREV, "Find previous search match"), \
793 \
794 REQ_GROUP("Option manipulation") \
795 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
796 REQ_(TOGGLE_DATE, "Toggle date display"), \
797 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
798 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
799 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
800 \
801 REQ_GROUP("Misc") \
802 REQ_(PROMPT, "Bring up the prompt"), \
803 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
804 REQ_(SHOW_VERSION, "Show version information"), \
805 REQ_(STOP_LOADING, "Stop all loading views"), \
806 REQ_(EDIT, "Open in editor"), \
807 REQ_(NONE, "Do nothing")
810 /* User action requests. */
811 enum request {
812 #define REQ_GROUP(help)
813 #define REQ_(req, help) REQ_##req
815 /* Offset all requests to avoid conflicts with ncurses getch values. */
816 REQ_OFFSET = KEY_MAX + 1,
817 REQ_INFO
819 #undef REQ_GROUP
820 #undef REQ_
821 };
823 struct request_info {
824 enum request request;
825 const char *name;
826 int namelen;
827 const char *help;
828 };
830 static const struct request_info req_info[] = {
831 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
832 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
833 REQ_INFO
834 #undef REQ_GROUP
835 #undef REQ_
836 };
838 static enum request
839 get_request(const char *name)
840 {
841 int namelen = strlen(name);
842 int i;
844 for (i = 0; i < ARRAY_SIZE(req_info); i++)
845 if (req_info[i].namelen == namelen &&
846 !string_enum_compare(req_info[i].name, name, namelen))
847 return req_info[i].request;
849 return REQ_NONE;
850 }
853 /*
854 * Options
855 */
857 /* Option and state variables. */
858 static bool opt_date = TRUE;
859 static bool opt_author = TRUE;
860 static bool opt_line_number = FALSE;
861 static bool opt_line_graphics = TRUE;
862 static bool opt_rev_graph = FALSE;
863 static bool opt_show_refs = TRUE;
864 static int opt_num_interval = NUMBER_INTERVAL;
865 static double opt_hscroll = 0.50;
866 static int opt_tab_size = TAB_SIZE;
867 static int opt_author_cols = AUTHOR_COLS-1;
868 static char opt_path[SIZEOF_STR] = "";
869 static char opt_file[SIZEOF_STR] = "";
870 static char opt_ref[SIZEOF_REF] = "";
871 static char opt_head[SIZEOF_REF] = "";
872 static char opt_head_rev[SIZEOF_REV] = "";
873 static char opt_remote[SIZEOF_REF] = "";
874 static char opt_encoding[20] = "UTF-8";
875 static bool opt_utf8 = TRUE;
876 static char opt_codeset[20] = "UTF-8";
877 static iconv_t opt_iconv = ICONV_NONE;
878 static char opt_search[SIZEOF_STR] = "";
879 static char opt_cdup[SIZEOF_STR] = "";
880 static char opt_prefix[SIZEOF_STR] = "";
881 static char opt_git_dir[SIZEOF_STR] = "";
882 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
883 static char opt_editor[SIZEOF_STR] = "";
884 static FILE *opt_tty = NULL;
886 #define is_initial_commit() (!*opt_head_rev)
887 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || !strcmp(opt_head_rev, (rev)))
890 /*
891 * Line-oriented content detection.
892 */
894 #define LINE_INFO \
895 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
896 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
897 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
898 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
899 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
900 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
901 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
902 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
903 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
904 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
905 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
906 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
907 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
908 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
909 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
910 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
911 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
912 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
913 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
914 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
915 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
916 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
917 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
918 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
919 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
920 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
921 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
922 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
923 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
924 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
925 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
926 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
927 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
928 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
929 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
930 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
931 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
932 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
933 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
934 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
935 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
936 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
937 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
938 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
939 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
940 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
941 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
942 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
943 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
944 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
945 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
946 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
947 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
948 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
949 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
951 enum line_type {
952 #define LINE(type, line, fg, bg, attr) \
953 LINE_##type
954 LINE_INFO,
955 LINE_NONE
956 #undef LINE
957 };
959 struct line_info {
960 const char *name; /* Option name. */
961 int namelen; /* Size of option name. */
962 const char *line; /* The start of line to match. */
963 int linelen; /* Size of string to match. */
964 int fg, bg, attr; /* Color and text attributes for the lines. */
965 };
967 static struct line_info line_info[] = {
968 #define LINE(type, line, fg, bg, attr) \
969 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
970 LINE_INFO
971 #undef LINE
972 };
974 static enum line_type
975 get_line_type(const char *line)
976 {
977 int linelen = strlen(line);
978 enum line_type type;
980 for (type = 0; type < ARRAY_SIZE(line_info); type++)
981 /* Case insensitive search matches Signed-off-by lines better. */
982 if (linelen >= line_info[type].linelen &&
983 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
984 return type;
986 return LINE_DEFAULT;
987 }
989 static inline int
990 get_line_attr(enum line_type type)
991 {
992 assert(type < ARRAY_SIZE(line_info));
993 return COLOR_PAIR(type) | line_info[type].attr;
994 }
996 static struct line_info *
997 get_line_info(const char *name)
998 {
999 size_t namelen = strlen(name);
1000 enum line_type type;
1002 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1003 if (namelen == line_info[type].namelen &&
1004 !string_enum_compare(line_info[type].name, name, namelen))
1005 return &line_info[type];
1007 return NULL;
1008 }
1010 static void
1011 init_colors(void)
1012 {
1013 int default_bg = line_info[LINE_DEFAULT].bg;
1014 int default_fg = line_info[LINE_DEFAULT].fg;
1015 enum line_type type;
1017 start_color();
1019 if (assume_default_colors(default_fg, default_bg) == ERR) {
1020 default_bg = COLOR_BLACK;
1021 default_fg = COLOR_WHITE;
1022 }
1024 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1025 struct line_info *info = &line_info[type];
1026 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1027 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1029 init_pair(type, fg, bg);
1030 }
1031 }
1033 struct line {
1034 enum line_type type;
1036 /* State flags */
1037 unsigned int selected:1;
1038 unsigned int dirty:1;
1039 unsigned int cleareol:1;
1041 void *data; /* User data */
1042 };
1045 /*
1046 * Keys
1047 */
1049 struct keybinding {
1050 int alias;
1051 enum request request;
1052 };
1054 static const struct keybinding default_keybindings[] = {
1055 /* View switching */
1056 { 'm', REQ_VIEW_MAIN },
1057 { 'd', REQ_VIEW_DIFF },
1058 { 'l', REQ_VIEW_LOG },
1059 { 't', REQ_VIEW_TREE },
1060 { 'f', REQ_VIEW_BLOB },
1061 { 'B', REQ_VIEW_BLAME },
1062 { 'p', REQ_VIEW_PAGER },
1063 { 'h', REQ_VIEW_HELP },
1064 { 'S', REQ_VIEW_STATUS },
1065 { 'c', REQ_VIEW_STAGE },
1067 /* View manipulation */
1068 { 'q', REQ_VIEW_CLOSE },
1069 { KEY_TAB, REQ_VIEW_NEXT },
1070 { KEY_RETURN, REQ_ENTER },
1071 { KEY_UP, REQ_PREVIOUS },
1072 { KEY_DOWN, REQ_NEXT },
1073 { 'R', REQ_REFRESH },
1074 { KEY_F(5), REQ_REFRESH },
1075 { 'O', REQ_MAXIMIZE },
1077 /* Cursor navigation */
1078 { 'k', REQ_MOVE_UP },
1079 { 'j', REQ_MOVE_DOWN },
1080 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1081 { KEY_END, REQ_MOVE_LAST_LINE },
1082 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1083 { ' ', REQ_MOVE_PAGE_DOWN },
1084 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1085 { 'b', REQ_MOVE_PAGE_UP },
1086 { '-', REQ_MOVE_PAGE_UP },
1088 /* Scrolling */
1089 { KEY_LEFT, REQ_SCROLL_LEFT },
1090 { KEY_RIGHT, REQ_SCROLL_RIGHT },
1091 { KEY_IC, REQ_SCROLL_LINE_UP },
1092 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1093 { 'w', REQ_SCROLL_PAGE_UP },
1094 { 's', REQ_SCROLL_PAGE_DOWN },
1096 /* Searching */
1097 { '/', REQ_SEARCH },
1098 { '?', REQ_SEARCH_BACK },
1099 { 'n', REQ_FIND_NEXT },
1100 { 'N', REQ_FIND_PREV },
1102 /* Misc */
1103 { 'Q', REQ_QUIT },
1104 { 'z', REQ_STOP_LOADING },
1105 { 'v', REQ_SHOW_VERSION },
1106 { 'r', REQ_SCREEN_REDRAW },
1107 { '.', REQ_TOGGLE_LINENO },
1108 { 'D', REQ_TOGGLE_DATE },
1109 { 'A', REQ_TOGGLE_AUTHOR },
1110 { 'g', REQ_TOGGLE_REV_GRAPH },
1111 { 'F', REQ_TOGGLE_REFS },
1112 { ':', REQ_PROMPT },
1113 { 'u', REQ_STATUS_UPDATE },
1114 { '!', REQ_STATUS_REVERT },
1115 { 'M', REQ_STATUS_MERGE },
1116 { '@', REQ_STAGE_NEXT },
1117 { ',', REQ_PARENT },
1118 { 'e', REQ_EDIT },
1119 };
1121 #define KEYMAP_INFO \
1122 KEYMAP_(GENERIC), \
1123 KEYMAP_(MAIN), \
1124 KEYMAP_(DIFF), \
1125 KEYMAP_(LOG), \
1126 KEYMAP_(TREE), \
1127 KEYMAP_(BLOB), \
1128 KEYMAP_(BLAME), \
1129 KEYMAP_(PAGER), \
1130 KEYMAP_(HELP), \
1131 KEYMAP_(STATUS), \
1132 KEYMAP_(STAGE)
1134 enum keymap {
1135 #define KEYMAP_(name) KEYMAP_##name
1136 KEYMAP_INFO
1137 #undef KEYMAP_
1138 };
1140 static const struct enum_map keymap_table[] = {
1141 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
1142 KEYMAP_INFO
1143 #undef KEYMAP_
1144 };
1146 #define set_keymap(map, name) map_enum(map, keymap_table, name)
1148 struct keybinding_table {
1149 struct keybinding *data;
1150 size_t size;
1151 };
1153 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1155 static void
1156 add_keybinding(enum keymap keymap, enum request request, int key)
1157 {
1158 struct keybinding_table *table = &keybindings[keymap];
1160 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1161 if (!table->data)
1162 die("Failed to allocate keybinding");
1163 table->data[table->size].alias = key;
1164 table->data[table->size++].request = request;
1165 }
1167 /* Looks for a key binding first in the given map, then in the generic map, and
1168 * lastly in the default keybindings. */
1169 static enum request
1170 get_keybinding(enum keymap keymap, int key)
1171 {
1172 size_t i;
1174 for (i = 0; i < keybindings[keymap].size; i++)
1175 if (keybindings[keymap].data[i].alias == key)
1176 return keybindings[keymap].data[i].request;
1178 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1179 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1180 return keybindings[KEYMAP_GENERIC].data[i].request;
1182 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1183 if (default_keybindings[i].alias == key)
1184 return default_keybindings[i].request;
1186 return (enum request) key;
1187 }
1190 struct key {
1191 const char *name;
1192 int value;
1193 };
1195 static const struct key key_table[] = {
1196 { "Enter", KEY_RETURN },
1197 { "Space", ' ' },
1198 { "Backspace", KEY_BACKSPACE },
1199 { "Tab", KEY_TAB },
1200 { "Escape", KEY_ESC },
1201 { "Left", KEY_LEFT },
1202 { "Right", KEY_RIGHT },
1203 { "Up", KEY_UP },
1204 { "Down", KEY_DOWN },
1205 { "Insert", KEY_IC },
1206 { "Delete", KEY_DC },
1207 { "Hash", '#' },
1208 { "Home", KEY_HOME },
1209 { "End", KEY_END },
1210 { "PageUp", KEY_PPAGE },
1211 { "PageDown", KEY_NPAGE },
1212 { "F1", KEY_F(1) },
1213 { "F2", KEY_F(2) },
1214 { "F3", KEY_F(3) },
1215 { "F4", KEY_F(4) },
1216 { "F5", KEY_F(5) },
1217 { "F6", KEY_F(6) },
1218 { "F7", KEY_F(7) },
1219 { "F8", KEY_F(8) },
1220 { "F9", KEY_F(9) },
1221 { "F10", KEY_F(10) },
1222 { "F11", KEY_F(11) },
1223 { "F12", KEY_F(12) },
1224 };
1226 static int
1227 get_key_value(const char *name)
1228 {
1229 int i;
1231 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1232 if (!strcasecmp(key_table[i].name, name))
1233 return key_table[i].value;
1235 if (strlen(name) == 1 && isprint(*name))
1236 return (int) *name;
1238 return ERR;
1239 }
1241 static const char *
1242 get_key_name(int key_value)
1243 {
1244 static char key_char[] = "'X'";
1245 const char *seq = NULL;
1246 int key;
1248 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1249 if (key_table[key].value == key_value)
1250 seq = key_table[key].name;
1252 if (seq == NULL &&
1253 key_value < 127 &&
1254 isprint(key_value)) {
1255 key_char[1] = (char) key_value;
1256 seq = key_char;
1257 }
1259 return seq ? seq : "(no key)";
1260 }
1262 static const char *
1263 get_key(enum request request)
1264 {
1265 static char buf[BUFSIZ];
1266 size_t pos = 0;
1267 char *sep = "";
1268 int i;
1270 buf[pos] = 0;
1272 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1273 const struct keybinding *keybinding = &default_keybindings[i];
1275 if (keybinding->request != request)
1276 continue;
1278 if (!string_format_from(buf, &pos, "%s%s", sep,
1279 get_key_name(keybinding->alias)))
1280 return "Too many keybindings!";
1281 sep = ", ";
1282 }
1284 return buf;
1285 }
1287 struct run_request {
1288 enum keymap keymap;
1289 int key;
1290 const char *argv[SIZEOF_ARG];
1291 };
1293 static struct run_request *run_request;
1294 static size_t run_requests;
1296 static enum request
1297 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1298 {
1299 struct run_request *req;
1301 if (argc >= ARRAY_SIZE(req->argv) - 1)
1302 return REQ_NONE;
1304 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
1305 if (!req)
1306 return REQ_NONE;
1308 run_request = req;
1309 req = &run_request[run_requests];
1310 req->keymap = keymap;
1311 req->key = key;
1312 req->argv[0] = NULL;
1314 if (!format_argv(req->argv, argv, FORMAT_NONE))
1315 return REQ_NONE;
1317 return REQ_NONE + ++run_requests;
1318 }
1320 static struct run_request *
1321 get_run_request(enum request request)
1322 {
1323 if (request <= REQ_NONE)
1324 return NULL;
1325 return &run_request[request - REQ_NONE - 1];
1326 }
1328 static void
1329 add_builtin_run_requests(void)
1330 {
1331 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1332 const char *gc[] = { "git", "gc", NULL };
1333 struct {
1334 enum keymap keymap;
1335 int key;
1336 int argc;
1337 const char **argv;
1338 } reqs[] = {
1339 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1340 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1341 };
1342 int i;
1344 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1345 enum request req;
1347 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1348 if (req != REQ_NONE)
1349 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1350 }
1351 }
1353 /*
1354 * User config file handling.
1355 */
1357 static int config_lineno;
1358 static bool config_errors;
1359 static const char *config_msg;
1361 static const struct enum_map color_map[] = {
1362 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1363 COLOR_MAP(DEFAULT),
1364 COLOR_MAP(BLACK),
1365 COLOR_MAP(BLUE),
1366 COLOR_MAP(CYAN),
1367 COLOR_MAP(GREEN),
1368 COLOR_MAP(MAGENTA),
1369 COLOR_MAP(RED),
1370 COLOR_MAP(WHITE),
1371 COLOR_MAP(YELLOW),
1372 };
1374 static const struct enum_map attr_map[] = {
1375 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1376 ATTR_MAP(NORMAL),
1377 ATTR_MAP(BLINK),
1378 ATTR_MAP(BOLD),
1379 ATTR_MAP(DIM),
1380 ATTR_MAP(REVERSE),
1381 ATTR_MAP(STANDOUT),
1382 ATTR_MAP(UNDERLINE),
1383 };
1385 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1387 static int parse_step(double *opt, const char *arg)
1388 {
1389 *opt = atoi(arg);
1390 if (!strchr(arg, '%'))
1391 return OK;
1393 /* "Shift down" so 100% and 1 does not conflict. */
1394 *opt = (*opt - 1) / 100;
1395 if (*opt >= 1.0) {
1396 *opt = 0.99;
1397 config_msg = "Step value larger than 100%";
1398 return ERR;
1399 }
1400 if (*opt < 0.0) {
1401 *opt = 1;
1402 config_msg = "Invalid step value";
1403 return ERR;
1404 }
1405 return OK;
1406 }
1408 static int
1409 parse_int(int *opt, const char *arg, int min, int max)
1410 {
1411 int value = atoi(arg);
1413 if (min <= value && value <= max) {
1414 *opt = value;
1415 return OK;
1416 }
1418 config_msg = "Integer value out of bound";
1419 return ERR;
1420 }
1422 static bool
1423 set_color(int *color, const char *name)
1424 {
1425 if (map_enum(color, color_map, name))
1426 return TRUE;
1427 if (!prefixcmp(name, "color"))
1428 return parse_int(color, name + 5, 0, 255) == OK;
1429 return FALSE;
1430 }
1432 /* Wants: object fgcolor bgcolor [attribute] */
1433 static int
1434 option_color_command(int argc, const char *argv[])
1435 {
1436 struct line_info *info;
1438 if (argc != 3 && argc != 4) {
1439 config_msg = "Wrong number of arguments given to color command";
1440 return ERR;
1441 }
1443 info = get_line_info(argv[0]);
1444 if (!info) {
1445 static const struct enum_map obsolete[] = {
1446 ENUM_MAP("main-delim", LINE_DELIMITER),
1447 ENUM_MAP("main-date", LINE_DATE),
1448 ENUM_MAP("main-author", LINE_AUTHOR),
1449 };
1450 int index;
1452 if (!map_enum(&index, obsolete, argv[0])) {
1453 config_msg = "Unknown color name";
1454 return ERR;
1455 }
1456 info = &line_info[index];
1457 }
1459 if (!set_color(&info->fg, argv[1]) ||
1460 !set_color(&info->bg, argv[2])) {
1461 config_msg = "Unknown color";
1462 return ERR;
1463 }
1465 if (argc == 4 && !set_attribute(&info->attr, argv[3])) {
1466 config_msg = "Unknown attribute";
1467 return ERR;
1468 }
1470 return OK;
1471 }
1473 static int parse_bool(bool *opt, const char *arg)
1474 {
1475 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1476 ? TRUE : FALSE;
1477 return OK;
1478 }
1480 static int
1481 parse_string(char *opt, const char *arg, size_t optsize)
1482 {
1483 int arglen = strlen(arg);
1485 switch (arg[0]) {
1486 case '\"':
1487 case '\'':
1488 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1489 config_msg = "Unmatched quotation";
1490 return ERR;
1491 }
1492 arg += 1; arglen -= 2;
1493 default:
1494 string_ncopy_do(opt, optsize, arg, arglen);
1495 return OK;
1496 }
1497 }
1499 /* Wants: name = value */
1500 static int
1501 option_set_command(int argc, const char *argv[])
1502 {
1503 if (argc != 3) {
1504 config_msg = "Wrong number of arguments given to set command";
1505 return ERR;
1506 }
1508 if (strcmp(argv[1], "=")) {
1509 config_msg = "No value assigned";
1510 return ERR;
1511 }
1513 if (!strcmp(argv[0], "show-author"))
1514 return parse_bool(&opt_author, argv[2]);
1516 if (!strcmp(argv[0], "show-date"))
1517 return parse_bool(&opt_date, argv[2]);
1519 if (!strcmp(argv[0], "show-rev-graph"))
1520 return parse_bool(&opt_rev_graph, argv[2]);
1522 if (!strcmp(argv[0], "show-refs"))
1523 return parse_bool(&opt_show_refs, argv[2]);
1525 if (!strcmp(argv[0], "show-line-numbers"))
1526 return parse_bool(&opt_line_number, argv[2]);
1528 if (!strcmp(argv[0], "line-graphics"))
1529 return parse_bool(&opt_line_graphics, argv[2]);
1531 if (!strcmp(argv[0], "line-number-interval"))
1532 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1534 if (!strcmp(argv[0], "author-width"))
1535 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1537 if (!strcmp(argv[0], "horizontal-scroll"))
1538 return parse_step(&opt_hscroll, argv[2]);
1540 if (!strcmp(argv[0], "tab-size"))
1541 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1543 if (!strcmp(argv[0], "commit-encoding"))
1544 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1546 config_msg = "Unknown variable name";
1547 return ERR;
1548 }
1550 /* Wants: mode request key */
1551 static int
1552 option_bind_command(int argc, const char *argv[])
1553 {
1554 enum request request;
1555 int keymap;
1556 int key;
1558 if (argc < 3) {
1559 config_msg = "Wrong number of arguments given to bind command";
1560 return ERR;
1561 }
1563 if (set_keymap(&keymap, argv[0]) == ERR) {
1564 config_msg = "Unknown key map";
1565 return ERR;
1566 }
1568 key = get_key_value(argv[1]);
1569 if (key == ERR) {
1570 config_msg = "Unknown key";
1571 return ERR;
1572 }
1574 request = get_request(argv[2]);
1575 if (request == REQ_NONE) {
1576 static const struct enum_map obsolete[] = {
1577 ENUM_MAP("cherry-pick", REQ_NONE),
1578 ENUM_MAP("screen-resize", REQ_NONE),
1579 ENUM_MAP("tree-parent", REQ_PARENT),
1580 };
1581 int alias;
1583 if (map_enum(&alias, obsolete, argv[2])) {
1584 if (alias != REQ_NONE)
1585 add_keybinding(keymap, alias, key);
1586 config_msg = "Obsolete request name";
1587 return ERR;
1588 }
1589 }
1590 if (request == REQ_NONE && *argv[2]++ == '!')
1591 request = add_run_request(keymap, key, argc - 2, argv + 2);
1592 if (request == REQ_NONE) {
1593 config_msg = "Unknown request name";
1594 return ERR;
1595 }
1597 add_keybinding(keymap, request, key);
1599 return OK;
1600 }
1602 static int
1603 set_option(const char *opt, char *value)
1604 {
1605 const char *argv[SIZEOF_ARG];
1606 int argc = 0;
1608 if (!argv_from_string(argv, &argc, value)) {
1609 config_msg = "Too many option arguments";
1610 return ERR;
1611 }
1613 if (!strcmp(opt, "color"))
1614 return option_color_command(argc, argv);
1616 if (!strcmp(opt, "set"))
1617 return option_set_command(argc, argv);
1619 if (!strcmp(opt, "bind"))
1620 return option_bind_command(argc, argv);
1622 config_msg = "Unknown option command";
1623 return ERR;
1624 }
1626 static int
1627 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1628 {
1629 int status = OK;
1631 config_lineno++;
1632 config_msg = "Internal error";
1634 /* Check for comment markers, since read_properties() will
1635 * only ensure opt and value are split at first " \t". */
1636 optlen = strcspn(opt, "#");
1637 if (optlen == 0)
1638 return OK;
1640 if (opt[optlen] != 0) {
1641 config_msg = "No option value";
1642 status = ERR;
1644 } else {
1645 /* Look for comment endings in the value. */
1646 size_t len = strcspn(value, "#");
1648 if (len < valuelen) {
1649 valuelen = len;
1650 value[valuelen] = 0;
1651 }
1653 status = set_option(opt, value);
1654 }
1656 if (status == ERR) {
1657 warn("Error on line %d, near '%.*s': %s",
1658 config_lineno, (int) optlen, opt, config_msg);
1659 config_errors = TRUE;
1660 }
1662 /* Always keep going if errors are encountered. */
1663 return OK;
1664 }
1666 static void
1667 load_option_file(const char *path)
1668 {
1669 struct io io = {};
1671 /* It's OK that the file doesn't exist. */
1672 if (!io_open(&io, path))
1673 return;
1675 config_lineno = 0;
1676 config_errors = FALSE;
1678 if (io_load(&io, " \t", read_option) == ERR ||
1679 config_errors == TRUE)
1680 warn("Errors while loading %s.", path);
1681 }
1683 static int
1684 load_options(void)
1685 {
1686 const char *home = getenv("HOME");
1687 const char *tigrc_user = getenv("TIGRC_USER");
1688 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1689 char buf[SIZEOF_STR];
1691 add_builtin_run_requests();
1693 if (!tigrc_system)
1694 tigrc_system = SYSCONFDIR "/tigrc";
1695 load_option_file(tigrc_system);
1697 if (!tigrc_user) {
1698 if (!home || !string_format(buf, "%s/.tigrc", home))
1699 return ERR;
1700 tigrc_user = buf;
1701 }
1702 load_option_file(tigrc_user);
1704 return OK;
1705 }
1708 /*
1709 * The viewer
1710 */
1712 struct view;
1713 struct view_ops;
1715 /* The display array of active views and the index of the current view. */
1716 static struct view *display[2];
1717 static unsigned int current_view;
1719 #define foreach_displayed_view(view, i) \
1720 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1722 #define displayed_views() (display[1] != NULL ? 2 : 1)
1724 /* Current head and commit ID */
1725 static char ref_blob[SIZEOF_REF] = "";
1726 static char ref_commit[SIZEOF_REF] = "HEAD";
1727 static char ref_head[SIZEOF_REF] = "HEAD";
1729 struct view {
1730 const char *name; /* View name */
1731 const char *cmd_env; /* Command line set via environment */
1732 const char *id; /* Points to either of ref_{head,commit,blob} */
1734 struct view_ops *ops; /* View operations */
1736 enum keymap keymap; /* What keymap does this view have */
1737 bool git_dir; /* Whether the view requires a git directory. */
1739 char ref[SIZEOF_REF]; /* Hovered commit reference */
1740 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1742 int height, width; /* The width and height of the main window */
1743 WINDOW *win; /* The main window */
1744 WINDOW *title; /* The title window living below the main window */
1746 /* Navigation */
1747 unsigned long offset; /* Offset of the window top */
1748 unsigned long yoffset; /* Offset from the window side. */
1749 unsigned long lineno; /* Current line number */
1750 unsigned long p_offset; /* Previous offset of the window top */
1751 unsigned long p_yoffset;/* Previous offset from the window side */
1752 unsigned long p_lineno; /* Previous current line number */
1753 bool p_restore; /* Should the previous position be restored. */
1755 /* Searching */
1756 char grep[SIZEOF_STR]; /* Search string */
1757 regex_t *regex; /* Pre-compiled regexp */
1759 /* If non-NULL, points to the view that opened this view. If this view
1760 * is closed tig will switch back to the parent view. */
1761 struct view *parent;
1763 /* Buffering */
1764 size_t lines; /* Total number of lines */
1765 struct line *line; /* Line index */
1766 size_t line_alloc; /* Total number of allocated lines */
1767 unsigned int digits; /* Number of digits in the lines member. */
1769 /* Drawing */
1770 struct line *curline; /* Line currently being drawn. */
1771 enum line_type curtype; /* Attribute currently used for drawing. */
1772 unsigned long col; /* Column when drawing. */
1773 bool has_scrolled; /* View was scrolled. */
1775 /* Loading */
1776 struct io io;
1777 struct io *pipe;
1778 time_t start_time;
1779 time_t update_secs;
1780 };
1782 struct view_ops {
1783 /* What type of content being displayed. Used in the title bar. */
1784 const char *type;
1785 /* Default command arguments. */
1786 const char **argv;
1787 /* Open and reads in all view content. */
1788 bool (*open)(struct view *view);
1789 /* Read one line; updates view->line. */
1790 bool (*read)(struct view *view, char *data);
1791 /* Draw one line; @lineno must be < view->height. */
1792 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1793 /* Depending on view handle a special requests. */
1794 enum request (*request)(struct view *view, enum request request, struct line *line);
1795 /* Search for regexp in a line. */
1796 bool (*grep)(struct view *view, struct line *line);
1797 /* Select line */
1798 void (*select)(struct view *view, struct line *line);
1799 };
1801 static struct view_ops blame_ops;
1802 static struct view_ops blob_ops;
1803 static struct view_ops diff_ops;
1804 static struct view_ops help_ops;
1805 static struct view_ops log_ops;
1806 static struct view_ops main_ops;
1807 static struct view_ops pager_ops;
1808 static struct view_ops stage_ops;
1809 static struct view_ops status_ops;
1810 static struct view_ops tree_ops;
1812 #define VIEW_STR(name, env, ref, ops, map, git) \
1813 { name, #env, ref, ops, map, git }
1815 #define VIEW_(id, name, ops, git, ref) \
1816 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1819 static struct view views[] = {
1820 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1821 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1822 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1823 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1824 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1825 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1826 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1827 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1828 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1829 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1830 };
1832 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1833 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1835 #define foreach_view(view, i) \
1836 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1838 #define view_is_displayed(view) \
1839 (view == display[0] || view == display[1])
1842 enum line_graphic {
1843 LINE_GRAPHIC_VLINE
1844 };
1846 static chtype line_graphics[] = {
1847 /* LINE_GRAPHIC_VLINE: */ '|'
1848 };
1850 static inline void
1851 set_view_attr(struct view *view, enum line_type type)
1852 {
1853 if (!view->curline->selected && view->curtype != type) {
1854 wattrset(view->win, get_line_attr(type));
1855 wchgat(view->win, -1, 0, type, NULL);
1856 view->curtype = type;
1857 }
1858 }
1860 static int
1861 draw_chars(struct view *view, enum line_type type, const char *string,
1862 int max_len, bool use_tilde)
1863 {
1864 int len = 0;
1865 int col = 0;
1866 int trimmed = FALSE;
1867 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1869 if (max_len <= 0)
1870 return 0;
1872 if (opt_utf8) {
1873 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde);
1874 } else {
1875 col = len = strlen(string);
1876 if (len > max_len) {
1877 if (use_tilde) {
1878 max_len -= 1;
1879 }
1880 col = len = max_len;
1881 trimmed = TRUE;
1882 }
1883 }
1885 set_view_attr(view, type);
1886 if (len > 0)
1887 waddnstr(view->win, string, len);
1888 if (trimmed && use_tilde) {
1889 set_view_attr(view, LINE_DELIMITER);
1890 waddch(view->win, '~');
1891 col++;
1892 }
1894 return col;
1895 }
1897 static int
1898 draw_space(struct view *view, enum line_type type, int max, int spaces)
1899 {
1900 static char space[] = " ";
1901 int col = 0;
1903 spaces = MIN(max, spaces);
1905 while (spaces > 0) {
1906 int len = MIN(spaces, sizeof(space) - 1);
1908 col += draw_chars(view, type, space, len, FALSE);
1909 spaces -= len;
1910 }
1912 return col;
1913 }
1915 static bool
1916 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1917 {
1918 view->col += draw_chars(view, type, string, view->width + view->yoffset - view->col, trim);
1919 return view->width + view->yoffset <= view->col;
1920 }
1922 static bool
1923 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1924 {
1925 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1926 int max = view->width + view->yoffset - view->col;
1927 int i;
1929 if (max < size)
1930 size = max;
1932 set_view_attr(view, type);
1933 /* Using waddch() instead of waddnstr() ensures that
1934 * they'll be rendered correctly for the cursor line. */
1935 for (i = skip; i < size; i++)
1936 waddch(view->win, graphic[i]);
1938 view->col += size;
1939 if (size < max && skip <= size)
1940 waddch(view->win, ' ');
1941 view->col++;
1943 return view->width + view->yoffset <= view->col;
1944 }
1946 static bool
1947 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1948 {
1949 int max = MIN(view->width + view->yoffset - view->col, len);
1950 int col;
1952 if (text)
1953 col = draw_chars(view, type, text, max - 1, trim);
1954 else
1955 col = draw_space(view, type, max - 1, max - 1);
1957 view->col += col;
1958 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
1959 return view->width + view->yoffset <= view->col;
1960 }
1962 static bool
1963 draw_date(struct view *view, struct tm *time)
1964 {
1965 char buf[DATE_COLS];
1966 char *date;
1967 int timelen = 0;
1969 if (time)
1970 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1971 date = timelen ? buf : NULL;
1973 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1974 }
1976 static bool
1977 draw_author(struct view *view, const char *author)
1978 {
1979 bool trim = opt_author_cols == 0 || opt_author_cols > 5 || !author;
1981 if (!trim) {
1982 static char initials[10];
1983 size_t pos;
1985 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@')
1987 memset(initials, 0, sizeof(initials));
1988 for (pos = 0; *author && pos < opt_author_cols - 1; author++, pos++) {
1989 while (is_initial_sep(*author))
1990 author++;
1991 strncpy(&initials[pos], author, sizeof(initials) - 1 - pos);
1992 while (*author && !is_initial_sep(author[1]))
1993 author++;
1994 }
1996 author = initials;
1997 }
1999 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
2000 }
2002 static bool
2003 draw_mode(struct view *view, mode_t mode)
2004 {
2005 const char *str;
2007 if (S_ISDIR(mode))
2008 str = "drwxr-xr-x";
2009 else if (S_ISLNK(mode))
2010 str = "lrwxrwxrwx";
2011 else if (S_ISGITLINK(mode))
2012 str = "m---------";
2013 else if (S_ISREG(mode) && mode & S_IXUSR)
2014 str = "-rwxr-xr-x";
2015 else if (S_ISREG(mode))
2016 str = "-rw-r--r--";
2017 else
2018 str = "----------";
2020 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
2021 }
2023 static bool
2024 draw_lineno(struct view *view, unsigned int lineno)
2025 {
2026 char number[10];
2027 int digits3 = view->digits < 3 ? 3 : view->digits;
2028 int max = MIN(view->width + view->yoffset - view->col, digits3);
2029 char *text = NULL;
2031 lineno += view->offset + 1;
2032 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2033 static char fmt[] = "%1ld";
2035 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2036 if (string_format(number, fmt, lineno))
2037 text = number;
2038 }
2039 if (text)
2040 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2041 else
2042 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
2043 return draw_graphic(view, LINE_DEFAULT, &line_graphics[LINE_GRAPHIC_VLINE], 1);
2044 }
2046 static bool
2047 draw_view_line(struct view *view, unsigned int lineno)
2048 {
2049 struct line *line;
2050 bool selected = (view->offset + lineno == view->lineno);
2052 assert(view_is_displayed(view));
2054 if (view->offset + lineno >= view->lines)
2055 return FALSE;
2057 line = &view->line[view->offset + lineno];
2059 wmove(view->win, lineno, 0);
2060 if (line->cleareol)
2061 wclrtoeol(view->win);
2062 view->col = 0;
2063 view->curline = line;
2064 view->curtype = LINE_NONE;
2065 line->selected = FALSE;
2066 line->dirty = line->cleareol = 0;
2068 if (selected) {
2069 set_view_attr(view, LINE_CURSOR);
2070 line->selected = TRUE;
2071 view->ops->select(view, line);
2072 }
2074 return view->ops->draw(view, line, lineno);
2075 }
2077 static void
2078 redraw_view_dirty(struct view *view)
2079 {
2080 bool dirty = FALSE;
2081 int lineno;
2083 for (lineno = 0; lineno < view->height; lineno++) {
2084 if (view->offset + lineno >= view->lines)
2085 break;
2086 if (!view->line[view->offset + lineno].dirty)
2087 continue;
2088 dirty = TRUE;
2089 if (!draw_view_line(view, lineno))
2090 break;
2091 }
2093 if (!dirty)
2094 return;
2095 wnoutrefresh(view->win);
2096 }
2098 static void
2099 redraw_view_from(struct view *view, int lineno)
2100 {
2101 assert(0 <= lineno && lineno < view->height);
2103 for (; lineno < view->height; lineno++) {
2104 if (!draw_view_line(view, lineno))
2105 break;
2106 }
2108 wnoutrefresh(view->win);
2109 }
2111 static void
2112 redraw_view(struct view *view)
2113 {
2114 werase(view->win);
2115 redraw_view_from(view, 0);
2116 }
2119 static void
2120 update_view_title(struct view *view)
2121 {
2122 char buf[SIZEOF_STR];
2123 char state[SIZEOF_STR];
2124 size_t bufpos = 0, statelen = 0;
2126 assert(view_is_displayed(view));
2128 if (view != VIEW(REQ_VIEW_STATUS) && view->lines) {
2129 unsigned int view_lines = view->offset + view->height;
2130 unsigned int lines = view->lines
2131 ? MIN(view_lines, view->lines) * 100 / view->lines
2132 : 0;
2134 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2135 view->ops->type,
2136 view->lineno + 1,
2137 view->lines,
2138 lines);
2140 }
2142 if (view->pipe) {
2143 time_t secs = time(NULL) - view->start_time;
2145 /* Three git seconds are a long time ... */
2146 if (secs > 2)
2147 string_format_from(state, &statelen, " loading %lds", secs);
2148 }
2150 string_format_from(buf, &bufpos, "[%s]", view->name);
2151 if (*view->ref && bufpos < view->width) {
2152 size_t refsize = strlen(view->ref);
2153 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2155 if (minsize < view->width)
2156 refsize = view->width - minsize + 7;
2157 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2158 }
2160 if (statelen && bufpos < view->width) {
2161 string_format_from(buf, &bufpos, "%s", state);
2162 }
2164 if (view == display[current_view])
2165 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2166 else
2167 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2169 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2170 wclrtoeol(view->title);
2171 wnoutrefresh(view->title);
2172 }
2174 static void
2175 resize_display(void)
2176 {
2177 int offset, i;
2178 struct view *base = display[0];
2179 struct view *view = display[1] ? display[1] : display[0];
2181 /* Setup window dimensions */
2183 getmaxyx(stdscr, base->height, base->width);
2185 /* Make room for the status window. */
2186 base->height -= 1;
2188 if (view != base) {
2189 /* Horizontal split. */
2190 view->width = base->width;
2191 view->height = SCALE_SPLIT_VIEW(base->height);
2192 base->height -= view->height;
2194 /* Make room for the title bar. */
2195 view->height -= 1;
2196 }
2198 /* Make room for the title bar. */
2199 base->height -= 1;
2201 offset = 0;
2203 foreach_displayed_view (view, i) {
2204 if (!view->win) {
2205 view->win = newwin(view->height, 0, offset, 0);
2206 if (!view->win)
2207 die("Failed to create %s view", view->name);
2209 scrollok(view->win, FALSE);
2211 view->title = newwin(1, 0, offset + view->height, 0);
2212 if (!view->title)
2213 die("Failed to create title window");
2215 } else {
2216 wresize(view->win, view->height, view->width);
2217 mvwin(view->win, offset, 0);
2218 mvwin(view->title, offset + view->height, 0);
2219 }
2221 offset += view->height + 1;
2222 }
2223 }
2225 static void
2226 redraw_display(bool clear)
2227 {
2228 struct view *view;
2229 int i;
2231 foreach_displayed_view (view, i) {
2232 if (clear)
2233 wclear(view->win);
2234 redraw_view(view);
2235 update_view_title(view);
2236 }
2237 }
2239 static void
2240 toggle_view_option(bool *option, const char *help)
2241 {
2242 *option = !*option;
2243 redraw_display(FALSE);
2244 report("%sabling %s", *option ? "En" : "Dis", help);
2245 }
2247 static void
2248 maximize_view(struct view *view)
2249 {
2250 memset(display, 0, sizeof(display));
2251 current_view = 0;
2252 display[current_view] = view;
2253 resize_display();
2254 redraw_display(FALSE);
2255 report("");
2256 }
2259 /*
2260 * Navigation
2261 */
2263 static bool
2264 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2265 {
2266 if (lineno >= view->lines)
2267 lineno = view->lines > 0 ? view->lines - 1 : 0;
2269 if (offset > lineno || offset + view->height <= lineno) {
2270 unsigned long half = view->height / 2;
2272 if (lineno > half)
2273 offset = lineno - half;
2274 else
2275 offset = 0;
2276 }
2278 if (offset != view->offset || lineno != view->lineno) {
2279 view->offset = offset;
2280 view->lineno = lineno;
2281 return TRUE;
2282 }
2284 return FALSE;
2285 }
2287 static int
2288 apply_step(double step, int value)
2289 {
2290 if (step >= 1)
2291 return (int) step;
2292 value *= step + 0.01;
2293 return value ? value : 1;
2294 }
2296 /* Scrolling backend */
2297 static void
2298 do_scroll_view(struct view *view, int lines)
2299 {
2300 bool redraw_current_line = FALSE;
2302 /* The rendering expects the new offset. */
2303 view->offset += lines;
2305 assert(0 <= view->offset && view->offset < view->lines);
2306 assert(lines);
2308 /* Move current line into the view. */
2309 if (view->lineno < view->offset) {
2310 view->lineno = view->offset;
2311 redraw_current_line = TRUE;
2312 } else if (view->lineno >= view->offset + view->height) {
2313 view->lineno = view->offset + view->height - 1;
2314 redraw_current_line = TRUE;
2315 }
2317 assert(view->offset <= view->lineno && view->lineno < view->lines);
2319 /* Redraw the whole screen if scrolling is pointless. */
2320 if (view->height < ABS(lines)) {
2321 redraw_view(view);
2323 } else {
2324 int line = lines > 0 ? view->height - lines : 0;
2325 int end = line + ABS(lines);
2327 scrollok(view->win, TRUE);
2328 wscrl(view->win, lines);
2329 scrollok(view->win, FALSE);
2331 while (line < end && draw_view_line(view, line))
2332 line++;
2334 if (redraw_current_line)
2335 draw_view_line(view, view->lineno - view->offset);
2336 wnoutrefresh(view->win);
2337 }
2339 view->has_scrolled = TRUE;
2340 report("");
2341 }
2343 /* Scroll frontend */
2344 static void
2345 scroll_view(struct view *view, enum request request)
2346 {
2347 int lines = 1;
2349 assert(view_is_displayed(view));
2351 switch (request) {
2352 case REQ_SCROLL_LEFT:
2353 if (view->yoffset == 0) {
2354 report("Cannot scroll beyond the first column");
2355 return;
2356 }
2357 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2358 view->yoffset = 0;
2359 else
2360 view->yoffset -= apply_step(opt_hscroll, view->width);
2361 redraw_view_from(view, 0);
2362 report("");
2363 return;
2364 case REQ_SCROLL_RIGHT:
2365 view->yoffset += apply_step(opt_hscroll, view->width);
2366 redraw_view(view);
2367 report("");
2368 return;
2369 case REQ_SCROLL_PAGE_DOWN:
2370 lines = view->height;
2371 case REQ_SCROLL_LINE_DOWN:
2372 if (view->offset + lines > view->lines)
2373 lines = view->lines - view->offset;
2375 if (lines == 0 || view->offset + view->height >= view->lines) {
2376 report("Cannot scroll beyond the last line");
2377 return;
2378 }
2379 break;
2381 case REQ_SCROLL_PAGE_UP:
2382 lines = view->height;
2383 case REQ_SCROLL_LINE_UP:
2384 if (lines > view->offset)
2385 lines = view->offset;
2387 if (lines == 0) {
2388 report("Cannot scroll beyond the first line");
2389 return;
2390 }
2392 lines = -lines;
2393 break;
2395 default:
2396 die("request %d not handled in switch", request);
2397 }
2399 do_scroll_view(view, lines);
2400 }
2402 /* Cursor moving */
2403 static void
2404 move_view(struct view *view, enum request request)
2405 {
2406 int scroll_steps = 0;
2407 int steps;
2409 switch (request) {
2410 case REQ_MOVE_FIRST_LINE:
2411 steps = -view->lineno;
2412 break;
2414 case REQ_MOVE_LAST_LINE:
2415 steps = view->lines - view->lineno - 1;
2416 break;
2418 case REQ_MOVE_PAGE_UP:
2419 steps = view->height > view->lineno
2420 ? -view->lineno : -view->height;
2421 break;
2423 case REQ_MOVE_PAGE_DOWN:
2424 steps = view->lineno + view->height >= view->lines
2425 ? view->lines - view->lineno - 1 : view->height;
2426 break;
2428 case REQ_MOVE_UP:
2429 steps = -1;
2430 break;
2432 case REQ_MOVE_DOWN:
2433 steps = 1;
2434 break;
2436 default:
2437 die("request %d not handled in switch", request);
2438 }
2440 if (steps <= 0 && view->lineno == 0) {
2441 report("Cannot move beyond the first line");
2442 return;
2444 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2445 report("Cannot move beyond the last line");
2446 return;
2447 }
2449 /* Move the current line */
2450 view->lineno += steps;
2451 assert(0 <= view->lineno && view->lineno < view->lines);
2453 /* Check whether the view needs to be scrolled */
2454 if (view->lineno < view->offset ||
2455 view->lineno >= view->offset + view->height) {
2456 scroll_steps = steps;
2457 if (steps < 0 && -steps > view->offset) {
2458 scroll_steps = -view->offset;
2460 } else if (steps > 0) {
2461 if (view->lineno == view->lines - 1 &&
2462 view->lines > view->height) {
2463 scroll_steps = view->lines - view->offset - 1;
2464 if (scroll_steps >= view->height)
2465 scroll_steps -= view->height - 1;
2466 }
2467 }
2468 }
2470 if (!view_is_displayed(view)) {
2471 view->offset += scroll_steps;
2472 assert(0 <= view->offset && view->offset < view->lines);
2473 view->ops->select(view, &view->line[view->lineno]);
2474 return;
2475 }
2477 /* Repaint the old "current" line if we be scrolling */
2478 if (ABS(steps) < view->height)
2479 draw_view_line(view, view->lineno - steps - view->offset);
2481 if (scroll_steps) {
2482 do_scroll_view(view, scroll_steps);
2483 return;
2484 }
2486 /* Draw the current line */
2487 draw_view_line(view, view->lineno - view->offset);
2489 wnoutrefresh(view->win);
2490 report("");
2491 }
2494 /*
2495 * Searching
2496 */
2498 static void search_view(struct view *view, enum request request);
2500 static void
2501 select_view_line(struct view *view, unsigned long lineno)
2502 {
2503 unsigned long old_lineno = view->lineno;
2504 unsigned long old_offset = view->offset;
2506 if (goto_view_line(view, view->offset, lineno)) {
2507 if (view_is_displayed(view)) {
2508 if (old_offset != view->offset) {
2509 redraw_view(view);
2510 } else {
2511 draw_view_line(view, old_lineno - view->offset);
2512 draw_view_line(view, view->lineno - view->offset);
2513 wnoutrefresh(view->win);
2514 }
2515 } else {
2516 view->ops->select(view, &view->line[view->lineno]);
2517 }
2518 }
2519 }
2521 static void
2522 find_next(struct view *view, enum request request)
2523 {
2524 unsigned long lineno = view->lineno;
2525 int direction;
2527 if (!*view->grep) {
2528 if (!*opt_search)
2529 report("No previous search");
2530 else
2531 search_view(view, request);
2532 return;
2533 }
2535 switch (request) {
2536 case REQ_SEARCH:
2537 case REQ_FIND_NEXT:
2538 direction = 1;
2539 break;
2541 case REQ_SEARCH_BACK:
2542 case REQ_FIND_PREV:
2543 direction = -1;
2544 break;
2546 default:
2547 return;
2548 }
2550 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2551 lineno += direction;
2553 /* Note, lineno is unsigned long so will wrap around in which case it
2554 * will become bigger than view->lines. */
2555 for (; lineno < view->lines; lineno += direction) {
2556 if (view->ops->grep(view, &view->line[lineno])) {
2557 select_view_line(view, lineno);
2558 report("Line %ld matches '%s'", lineno + 1, view->grep);
2559 return;
2560 }
2561 }
2563 report("No match found for '%s'", view->grep);
2564 }
2566 static void
2567 search_view(struct view *view, enum request request)
2568 {
2569 int regex_err;
2571 if (view->regex) {
2572 regfree(view->regex);
2573 *view->grep = 0;
2574 } else {
2575 view->regex = calloc(1, sizeof(*view->regex));
2576 if (!view->regex)
2577 return;
2578 }
2580 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2581 if (regex_err != 0) {
2582 char buf[SIZEOF_STR] = "unknown error";
2584 regerror(regex_err, view->regex, buf, sizeof(buf));
2585 report("Search failed: %s", buf);
2586 return;
2587 }
2589 string_copy(view->grep, opt_search);
2591 find_next(view, request);
2592 }
2594 /*
2595 * Incremental updating
2596 */
2598 static void
2599 reset_view(struct view *view)
2600 {
2601 int i;
2603 for (i = 0; i < view->lines; i++)
2604 free(view->line[i].data);
2605 free(view->line);
2607 view->p_offset = view->offset;
2608 view->p_yoffset = view->yoffset;
2609 view->p_lineno = view->lineno;
2611 view->line = NULL;
2612 view->offset = 0;
2613 view->yoffset = 0;
2614 view->lines = 0;
2615 view->lineno = 0;
2616 view->line_alloc = 0;
2617 view->vid[0] = 0;
2618 view->update_secs = 0;
2619 }
2621 static void
2622 free_argv(const char *argv[])
2623 {
2624 int argc;
2626 for (argc = 0; argv[argc]; argc++)
2627 free((void *) argv[argc]);
2628 }
2630 static bool
2631 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2632 {
2633 char buf[SIZEOF_STR];
2634 int argc;
2635 bool noreplace = flags == FORMAT_NONE;
2637 free_argv(dst_argv);
2639 for (argc = 0; src_argv[argc]; argc++) {
2640 const char *arg = src_argv[argc];
2641 size_t bufpos = 0;
2643 while (arg) {
2644 char *next = strstr(arg, "%(");
2645 int len = next - arg;
2646 const char *value;
2648 if (!next || noreplace) {
2649 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2650 noreplace = TRUE;
2651 len = strlen(arg);
2652 value = "";
2654 } else if (!prefixcmp(next, "%(directory)")) {
2655 value = opt_path;
2657 } else if (!prefixcmp(next, "%(file)")) {
2658 value = opt_file;
2660 } else if (!prefixcmp(next, "%(ref)")) {
2661 value = *opt_ref ? opt_ref : "HEAD";
2663 } else if (!prefixcmp(next, "%(head)")) {
2664 value = ref_head;
2666 } else if (!prefixcmp(next, "%(commit)")) {
2667 value = ref_commit;
2669 } else if (!prefixcmp(next, "%(blob)")) {
2670 value = ref_blob;
2672 } else {
2673 report("Unknown replacement: `%s`", next);
2674 return FALSE;
2675 }
2677 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2678 return FALSE;
2680 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2681 }
2683 dst_argv[argc] = strdup(buf);
2684 if (!dst_argv[argc])
2685 break;
2686 }
2688 dst_argv[argc] = NULL;
2690 return src_argv[argc] == NULL;
2691 }
2693 static bool
2694 restore_view_position(struct view *view)
2695 {
2696 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2697 return FALSE;
2699 /* Changing the view position cancels the restoring. */
2700 /* FIXME: Changing back to the first line is not detected. */
2701 if (view->offset != 0 || view->lineno != 0) {
2702 view->p_restore = FALSE;
2703 return FALSE;
2704 }
2706 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2707 view_is_displayed(view))
2708 werase(view->win);
2710 view->yoffset = view->p_yoffset;
2711 view->p_restore = FALSE;
2713 return TRUE;
2714 }
2716 static void
2717 end_update(struct view *view, bool force)
2718 {
2719 if (!view->pipe)
2720 return;
2721 while (!view->ops->read(view, NULL))
2722 if (!force)
2723 return;
2724 set_nonblocking_input(FALSE);
2725 if (force)
2726 kill_io(view->pipe);
2727 done_io(view->pipe);
2728 view->pipe = NULL;
2729 }
2731 static void
2732 setup_update(struct view *view, const char *vid)
2733 {
2734 set_nonblocking_input(TRUE);
2735 reset_view(view);
2736 string_copy_rev(view->vid, vid);
2737 view->pipe = &view->io;
2738 view->start_time = time(NULL);
2739 }
2741 static bool
2742 prepare_update(struct view *view, const char *argv[], const char *dir,
2743 enum format_flags flags)
2744 {
2745 if (view->pipe)
2746 end_update(view, TRUE);
2747 return init_io_rd(&view->io, argv, dir, flags);
2748 }
2750 static bool
2751 prepare_update_file(struct view *view, const char *name)
2752 {
2753 if (view->pipe)
2754 end_update(view, TRUE);
2755 return io_open(&view->io, name);
2756 }
2758 static bool
2759 begin_update(struct view *view, bool refresh)
2760 {
2761 if (view->pipe)
2762 end_update(view, TRUE);
2764 if (refresh) {
2765 if (!start_io(&view->io))
2766 return FALSE;
2768 } else {
2769 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2770 opt_path[0] = 0;
2772 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2773 return FALSE;
2775 /* Put the current ref_* value to the view title ref
2776 * member. This is needed by the blob view. Most other
2777 * views sets it automatically after loading because the
2778 * first line is a commit line. */
2779 string_copy_rev(view->ref, view->id);
2780 }
2782 setup_update(view, view->id);
2784 return TRUE;
2785 }
2787 #define ITEM_CHUNK_SIZE 256
2788 static void *
2789 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2790 {
2791 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2792 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2794 if (mem == NULL || num_chunks != num_chunks_new) {
2795 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2796 mem = realloc(mem, *size * item_size);
2797 }
2799 return mem;
2800 }
2802 static struct line *
2803 realloc_lines(struct view *view, size_t line_size)
2804 {
2805 size_t alloc = view->line_alloc;
2806 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2807 sizeof(*view->line));
2809 if (!tmp)
2810 return NULL;
2812 view->line = tmp;
2813 view->line_alloc = alloc;
2814 return view->line;
2815 }
2817 static bool
2818 update_view(struct view *view)
2819 {
2820 char out_buffer[BUFSIZ * 2];
2821 char *line;
2822 /* Clear the view and redraw everything since the tree sorting
2823 * might have rearranged things. */
2824 bool redraw = view->lines == 0;
2825 bool can_read = TRUE;
2827 if (!view->pipe)
2828 return TRUE;
2830 if (!io_can_read(view->pipe)) {
2831 if (view->lines == 0 && view_is_displayed(view)) {
2832 time_t secs = time(NULL) - view->start_time;
2834 if (secs > 1 && secs > view->update_secs) {
2835 if (view->update_secs == 0)
2836 redraw_view(view);
2837 update_view_title(view);
2838 view->update_secs = secs;
2839 }
2840 }
2841 return TRUE;
2842 }
2844 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2845 if (opt_iconv != ICONV_NONE) {
2846 ICONV_CONST char *inbuf = line;
2847 size_t inlen = strlen(line) + 1;
2849 char *outbuf = out_buffer;
2850 size_t outlen = sizeof(out_buffer);
2852 size_t ret;
2854 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2855 if (ret != (size_t) -1)
2856 line = out_buffer;
2857 }
2859 if (!view->ops->read(view, line)) {
2860 report("Allocation failure");
2861 end_update(view, TRUE);
2862 return FALSE;
2863 }
2864 }
2866 {
2867 unsigned long lines = view->lines;
2868 int digits;
2870 for (digits = 0; lines; digits++)
2871 lines /= 10;
2873 /* Keep the displayed view in sync with line number scaling. */
2874 if (digits != view->digits) {
2875 view->digits = digits;
2876 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2877 redraw = TRUE;
2878 }
2879 }
2881 if (io_error(view->pipe)) {
2882 report("Failed to read: %s", io_strerror(view->pipe));
2883 end_update(view, TRUE);
2885 } else if (io_eof(view->pipe)) {
2886 report("");
2887 end_update(view, FALSE);
2888 }
2890 if (restore_view_position(view))
2891 redraw = TRUE;
2893 if (!view_is_displayed(view))
2894 return TRUE;
2896 if (redraw)
2897 redraw_view_from(view, 0);
2898 else
2899 redraw_view_dirty(view);
2901 /* Update the title _after_ the redraw so that if the redraw picks up a
2902 * commit reference in view->ref it'll be available here. */
2903 update_view_title(view);
2904 return TRUE;
2905 }
2907 static struct line *
2908 add_line_data(struct view *view, void *data, enum line_type type)
2909 {
2910 struct line *line;
2912 if (!realloc_lines(view, view->lines + 1))
2913 return NULL;
2915 line = &view->line[view->lines++];
2916 memset(line, 0, sizeof(*line));
2917 line->type = type;
2918 line->data = data;
2919 line->dirty = 1;
2921 return line;
2922 }
2924 static struct line *
2925 add_line_text(struct view *view, const char *text, enum line_type type)
2926 {
2927 char *data = text ? strdup(text) : NULL;
2929 return data ? add_line_data(view, data, type) : NULL;
2930 }
2932 static struct line *
2933 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2934 {
2935 char buf[SIZEOF_STR];
2936 va_list args;
2938 va_start(args, fmt);
2939 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2940 buf[0] = 0;
2941 va_end(args);
2943 return buf[0] ? add_line_text(view, buf, type) : NULL;
2944 }
2946 /*
2947 * View opening
2948 */
2950 enum open_flags {
2951 OPEN_DEFAULT = 0, /* Use default view switching. */
2952 OPEN_SPLIT = 1, /* Split current view. */
2953 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2954 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2955 OPEN_PREPARED = 32, /* Open already prepared command. */
2956 };
2958 static void
2959 open_view(struct view *prev, enum request request, enum open_flags flags)
2960 {
2961 bool split = !!(flags & OPEN_SPLIT);
2962 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2963 bool nomaximize = !!(flags & OPEN_REFRESH);
2964 struct view *view = VIEW(request);
2965 int nviews = displayed_views();
2966 struct view *base_view = display[0];
2968 if (view == prev && nviews == 1 && !reload) {
2969 report("Already in %s view", view->name);
2970 return;
2971 }
2973 if (view->git_dir && !opt_git_dir[0]) {
2974 report("The %s view is disabled in pager view", view->name);
2975 return;
2976 }
2978 if (split) {
2979 display[1] = view;
2980 current_view = 1;
2981 } else if (!nomaximize) {
2982 /* Maximize the current view. */
2983 memset(display, 0, sizeof(display));
2984 current_view = 0;
2985 display[current_view] = view;
2986 }
2988 /* Resize the view when switching between split- and full-screen,
2989 * or when switching between two different full-screen views. */
2990 if (nviews != displayed_views() ||
2991 (nviews == 1 && base_view != display[0]))
2992 resize_display();
2994 if (view->ops->open) {
2995 if (view->pipe)
2996 end_update(view, TRUE);
2997 if (!view->ops->open(view)) {
2998 report("Failed to load %s view", view->name);
2999 return;
3000 }
3001 restore_view_position(view);
3003 } else if ((reload || strcmp(view->vid, view->id)) &&
3004 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3005 report("Failed to load %s view", view->name);
3006 return;
3007 }
3009 if (split && prev->lineno - prev->offset >= prev->height) {
3010 /* Take the title line into account. */
3011 int lines = prev->lineno - prev->offset - prev->height + 1;
3013 /* Scroll the view that was split if the current line is
3014 * outside the new limited view. */
3015 do_scroll_view(prev, lines);
3016 }
3018 if (prev && view != prev) {
3019 if (split) {
3020 /* "Blur" the previous view. */
3021 update_view_title(prev);
3022 }
3024 view->parent = prev;
3025 }
3027 if (view->pipe && view->lines == 0) {
3028 /* Clear the old view and let the incremental updating refill
3029 * the screen. */
3030 werase(view->win);
3031 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3032 report("");
3033 } else if (view_is_displayed(view)) {
3034 redraw_view(view);
3035 report("");
3036 }
3037 }
3039 static void
3040 open_external_viewer(const char *argv[], const char *dir)
3041 {
3042 def_prog_mode(); /* save current tty modes */
3043 endwin(); /* restore original tty modes */
3044 run_io_fg(argv, dir);
3045 fprintf(stderr, "Press Enter to continue");
3046 getc(opt_tty);
3047 reset_prog_mode();
3048 redraw_display(TRUE);
3049 }
3051 static void
3052 open_mergetool(const char *file)
3053 {
3054 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3056 open_external_viewer(mergetool_argv, opt_cdup);
3057 }
3059 static void
3060 open_editor(bool from_root, const char *file)
3061 {
3062 const char *editor_argv[] = { "vi", file, NULL };
3063 const char *editor;
3065 editor = getenv("GIT_EDITOR");
3066 if (!editor && *opt_editor)
3067 editor = opt_editor;
3068 if (!editor)
3069 editor = getenv("VISUAL");
3070 if (!editor)
3071 editor = getenv("EDITOR");
3072 if (!editor)
3073 editor = "vi";
3075 editor_argv[0] = editor;
3076 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
3077 }
3079 static void
3080 open_run_request(enum request request)
3081 {
3082 struct run_request *req = get_run_request(request);
3083 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3085 if (!req) {
3086 report("Unknown run request");
3087 return;
3088 }
3090 if (format_argv(argv, req->argv, FORMAT_ALL))
3091 open_external_viewer(argv, NULL);
3092 free_argv(argv);
3093 }
3095 /*
3096 * User request switch noodle
3097 */
3099 static int
3100 view_driver(struct view *view, enum request request)
3101 {
3102 int i;
3104 if (request == REQ_NONE)
3105 return TRUE;
3107 if (request > REQ_NONE) {
3108 open_run_request(request);
3109 /* FIXME: When all views can refresh always do this. */
3110 if (view == VIEW(REQ_VIEW_STATUS) ||
3111 view == VIEW(REQ_VIEW_MAIN) ||
3112 view == VIEW(REQ_VIEW_LOG) ||
3113 view == VIEW(REQ_VIEW_STAGE))
3114 request = REQ_REFRESH;
3115 else
3116 return TRUE;
3117 }
3119 if (view && view->lines) {
3120 request = view->ops->request(view, request, &view->line[view->lineno]);
3121 if (request == REQ_NONE)
3122 return TRUE;
3123 }
3125 switch (request) {
3126 case REQ_MOVE_UP:
3127 case REQ_MOVE_DOWN:
3128 case REQ_MOVE_PAGE_UP:
3129 case REQ_MOVE_PAGE_DOWN:
3130 case REQ_MOVE_FIRST_LINE:
3131 case REQ_MOVE_LAST_LINE:
3132 move_view(view, request);
3133 break;
3135 case REQ_SCROLL_LEFT:
3136 case REQ_SCROLL_RIGHT:
3137 case REQ_SCROLL_LINE_DOWN:
3138 case REQ_SCROLL_LINE_UP:
3139 case REQ_SCROLL_PAGE_DOWN:
3140 case REQ_SCROLL_PAGE_UP:
3141 scroll_view(view, request);
3142 break;
3144 case REQ_VIEW_BLAME:
3145 if (!opt_file[0]) {
3146 report("No file chosen, press %s to open tree view",
3147 get_key(REQ_VIEW_TREE));
3148 break;
3149 }
3150 open_view(view, request, OPEN_DEFAULT);
3151 break;
3153 case REQ_VIEW_BLOB:
3154 if (!ref_blob[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_PAGER:
3163 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3164 report("No pager content, press %s to run command from prompt",
3165 get_key(REQ_PROMPT));
3166 break;
3167 }
3168 open_view(view, request, OPEN_DEFAULT);
3169 break;
3171 case REQ_VIEW_STAGE:
3172 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3173 report("No stage content, press %s to open the status view and choose file",
3174 get_key(REQ_VIEW_STATUS));
3175 break;
3176 }
3177 open_view(view, request, OPEN_DEFAULT);
3178 break;
3180 case REQ_VIEW_STATUS:
3181 if (opt_is_inside_work_tree == FALSE) {
3182 report("The status view requires a working tree");
3183 break;
3184 }
3185 open_view(view, request, OPEN_DEFAULT);
3186 break;
3188 case REQ_VIEW_MAIN:
3189 case REQ_VIEW_DIFF:
3190 case REQ_VIEW_LOG:
3191 case REQ_VIEW_TREE:
3192 case REQ_VIEW_HELP:
3193 open_view(view, request, OPEN_DEFAULT);
3194 break;
3196 case REQ_NEXT:
3197 case REQ_PREVIOUS:
3198 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3200 if ((view == VIEW(REQ_VIEW_DIFF) &&
3201 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3202 (view == VIEW(REQ_VIEW_DIFF) &&
3203 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3204 (view == VIEW(REQ_VIEW_STAGE) &&
3205 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3206 (view == VIEW(REQ_VIEW_BLOB) &&
3207 view->parent == VIEW(REQ_VIEW_TREE))) {
3208 int line;
3210 view = view->parent;
3211 line = view->lineno;
3212 move_view(view, request);
3213 if (view_is_displayed(view))
3214 update_view_title(view);
3215 if (line != view->lineno)
3216 view->ops->request(view, REQ_ENTER,
3217 &view->line[view->lineno]);
3219 } else {
3220 move_view(view, request);
3221 }
3222 break;
3224 case REQ_VIEW_NEXT:
3225 {
3226 int nviews = displayed_views();
3227 int next_view = (current_view + 1) % nviews;
3229 if (next_view == current_view) {
3230 report("Only one view is displayed");
3231 break;
3232 }
3234 current_view = next_view;
3235 /* Blur out the title of the previous view. */
3236 update_view_title(view);
3237 report("");
3238 break;
3239 }
3240 case REQ_REFRESH:
3241 report("Refreshing is not yet supported for the %s view", view->name);
3242 break;
3244 case REQ_MAXIMIZE:
3245 if (displayed_views() == 2)
3246 maximize_view(view);
3247 break;
3249 case REQ_TOGGLE_LINENO:
3250 toggle_view_option(&opt_line_number, "line numbers");
3251 break;
3253 case REQ_TOGGLE_DATE:
3254 toggle_view_option(&opt_date, "date display");
3255 break;
3257 case REQ_TOGGLE_AUTHOR:
3258 toggle_view_option(&opt_author, "author display");
3259 break;
3261 case REQ_TOGGLE_REV_GRAPH:
3262 toggle_view_option(&opt_rev_graph, "revision graph display");
3263 break;
3265 case REQ_TOGGLE_REFS:
3266 toggle_view_option(&opt_show_refs, "reference display");
3267 break;
3269 case REQ_SEARCH:
3270 case REQ_SEARCH_BACK:
3271 search_view(view, request);
3272 break;
3274 case REQ_FIND_NEXT:
3275 case REQ_FIND_PREV:
3276 find_next(view, request);
3277 break;
3279 case REQ_STOP_LOADING:
3280 for (i = 0; i < ARRAY_SIZE(views); i++) {
3281 view = &views[i];
3282 if (view->pipe)
3283 report("Stopped loading the %s view", view->name),
3284 end_update(view, TRUE);
3285 }
3286 break;
3288 case REQ_SHOW_VERSION:
3289 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3290 return TRUE;
3292 case REQ_SCREEN_REDRAW:
3293 redraw_display(TRUE);
3294 break;
3296 case REQ_EDIT:
3297 report("Nothing to edit");
3298 break;
3300 case REQ_ENTER:
3301 report("Nothing to enter");
3302 break;
3304 case REQ_VIEW_CLOSE:
3305 /* XXX: Mark closed views by letting view->parent point to the
3306 * view itself. Parents to closed view should never be
3307 * followed. */
3308 if (view->parent &&
3309 view->parent->parent != view->parent) {
3310 maximize_view(view->parent);
3311 view->parent = view;
3312 break;
3313 }
3314 /* Fall-through */
3315 case REQ_QUIT:
3316 return FALSE;
3318 default:
3319 report("Unknown key, press 'h' for help");
3320 return TRUE;
3321 }
3323 return TRUE;
3324 }
3327 /*
3328 * View backend utilities
3329 */
3331 static void
3332 parse_timezone(time_t *time, const char *zone)
3333 {
3334 long tz;
3336 tz = ('0' - zone[1]) * 60 * 60 * 10;
3337 tz += ('0' - zone[2]) * 60 * 60;
3338 tz += ('0' - zone[3]) * 60;
3339 tz += ('0' - zone[4]);
3341 if (zone[0] == '-')
3342 tz = -tz;
3344 *time -= tz;
3345 }
3347 /* Parse author lines where the name may be empty:
3348 * author <email@address.tld> 1138474660 +0100
3349 */
3350 static void
3351 parse_author_line(char *ident, char *author, size_t authorsize, struct tm *tm)
3352 {
3353 char *nameend = strchr(ident, '<');
3354 char *emailend = strchr(ident, '>');
3356 if (nameend && emailend)
3357 *nameend = *emailend = 0;
3358 ident = chomp_string(ident);
3359 if (!*ident) {
3360 if (nameend)
3361 ident = chomp_string(nameend + 1);
3362 if (!*ident)
3363 ident = "Unknown";
3364 }
3366 string_ncopy_do(author, authorsize, ident, strlen(ident));
3368 /* Parse epoch and timezone */
3369 if (emailend && emailend[1] == ' ') {
3370 char *secs = emailend + 2;
3371 char *zone = strchr(secs, ' ');
3372 time_t time = (time_t) atol(secs);
3374 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3375 parse_timezone(&time, zone + 1);
3377 gmtime_r(&time, tm);
3378 }
3379 }
3381 static enum input_status
3382 select_commit_parent_handler(void *data, char *buf, int c)
3383 {
3384 size_t parents = *(size_t *) data;
3385 int parent = 0;
3387 if (!isdigit(c))
3388 return INPUT_SKIP;
3390 if (*buf)
3391 parent = atoi(buf) * 10;
3392 parent += c - '0';
3394 if (parent > parents)
3395 return INPUT_SKIP;
3396 return INPUT_OK;
3397 }
3399 static bool
3400 select_commit_parent(const char *id, char rev[SIZEOF_REV], const char *path)
3401 {
3402 char buf[SIZEOF_STR * 4];
3403 const char *revlist_argv[] = {
3404 "git", "rev-list", "-1", "--parents", id, "--", path, NULL
3405 };
3406 int parents;
3408 if (!run_io_buf(revlist_argv, buf, sizeof(buf)) ||
3409 !*chomp_string(buf) ||
3410 (parents = (strlen(buf) / 40) - 1) < 0) {
3411 report("Failed to get parent information");
3412 return FALSE;
3414 } else if (parents == 0) {
3415 if (path)
3416 report("Path '%s' does not exist in the parent", path);
3417 else
3418 report("The selected commit has no parents");
3419 return FALSE;
3420 }
3422 if (parents > 1) {
3423 char prompt[SIZEOF_STR];
3424 char *result;
3426 if (!string_format(prompt, "Which parent? [1..%d] ", parents))
3427 return FALSE;
3428 result = prompt_input(prompt, select_commit_parent_handler, &parents);
3429 if (!result)
3430 return FALSE;
3431 parents = atoi(result);
3432 }
3434 string_copy_rev(rev, &buf[41 * parents]);
3435 return TRUE;
3436 }
3438 /*
3439 * Pager backend
3440 */
3442 static bool
3443 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3444 {
3445 char text[SIZEOF_STR];
3447 if (opt_line_number && draw_lineno(view, lineno))
3448 return TRUE;
3450 string_expand(text, sizeof(text), line->data, opt_tab_size);
3451 draw_text(view, line->type, text, TRUE);
3452 return TRUE;
3453 }
3455 static bool
3456 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3457 {
3458 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3459 char refbuf[SIZEOF_STR];
3460 char *ref = NULL;
3462 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3463 ref = chomp_string(refbuf);
3465 if (!ref || !*ref)
3466 return TRUE;
3468 /* This is the only fatal call, since it can "corrupt" the buffer. */
3469 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3470 return FALSE;
3472 return TRUE;
3473 }
3475 static void
3476 add_pager_refs(struct view *view, struct line *line)
3477 {
3478 char buf[SIZEOF_STR];
3479 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3480 struct ref **refs;
3481 size_t bufpos = 0, refpos = 0;
3482 const char *sep = "Refs: ";
3483 bool is_tag = FALSE;
3485 assert(line->type == LINE_COMMIT);
3487 refs = get_refs(commit_id);
3488 if (!refs) {
3489 if (view == VIEW(REQ_VIEW_DIFF))
3490 goto try_add_describe_ref;
3491 return;
3492 }
3494 do {
3495 struct ref *ref = refs[refpos];
3496 const char *fmt = ref->tag ? "%s[%s]" :
3497 ref->remote ? "%s<%s>" : "%s%s";
3499 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3500 return;
3501 sep = ", ";
3502 if (ref->tag)
3503 is_tag = TRUE;
3504 } while (refs[refpos++]->next);
3506 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3507 try_add_describe_ref:
3508 /* Add <tag>-g<commit_id> "fake" reference. */
3509 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3510 return;
3511 }
3513 if (bufpos == 0)
3514 return;
3516 add_line_text(view, buf, LINE_PP_REFS);
3517 }
3519 static bool
3520 pager_read(struct view *view, char *data)
3521 {
3522 struct line *line;
3524 if (!data)
3525 return TRUE;
3527 line = add_line_text(view, data, get_line_type(data));
3528 if (!line)
3529 return FALSE;
3531 if (line->type == LINE_COMMIT &&
3532 (view == VIEW(REQ_VIEW_DIFF) ||
3533 view == VIEW(REQ_VIEW_LOG)))
3534 add_pager_refs(view, line);
3536 return TRUE;
3537 }
3539 static enum request
3540 pager_request(struct view *view, enum request request, struct line *line)
3541 {
3542 int split = 0;
3544 if (request != REQ_ENTER)
3545 return request;
3547 if (line->type == LINE_COMMIT &&
3548 (view == VIEW(REQ_VIEW_LOG) ||
3549 view == VIEW(REQ_VIEW_PAGER))) {
3550 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3551 split = 1;
3552 }
3554 /* Always scroll the view even if it was split. That way
3555 * you can use Enter to scroll through the log view and
3556 * split open each commit diff. */
3557 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3559 /* FIXME: A minor workaround. Scrolling the view will call report("")
3560 * but if we are scrolling a non-current view this won't properly
3561 * update the view title. */
3562 if (split)
3563 update_view_title(view);
3565 return REQ_NONE;
3566 }
3568 static bool
3569 pager_grep(struct view *view, struct line *line)
3570 {
3571 regmatch_t pmatch;
3572 char *text = line->data;
3574 if (!*text)
3575 return FALSE;
3577 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3578 return FALSE;
3580 return TRUE;
3581 }
3583 static void
3584 pager_select(struct view *view, struct line *line)
3585 {
3586 if (line->type == LINE_COMMIT) {
3587 char *text = (char *)line->data + STRING_SIZE("commit ");
3589 if (view != VIEW(REQ_VIEW_PAGER))
3590 string_copy_rev(view->ref, text);
3591 string_copy_rev(ref_commit, text);
3592 }
3593 }
3595 static struct view_ops pager_ops = {
3596 "line",
3597 NULL,
3598 NULL,
3599 pager_read,
3600 pager_draw,
3601 pager_request,
3602 pager_grep,
3603 pager_select,
3604 };
3606 static const char *log_argv[SIZEOF_ARG] = {
3607 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3608 };
3610 static enum request
3611 log_request(struct view *view, enum request request, struct line *line)
3612 {
3613 switch (request) {
3614 case REQ_REFRESH:
3615 load_refs();
3616 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3617 return REQ_NONE;
3618 default:
3619 return pager_request(view, request, line);
3620 }
3621 }
3623 static struct view_ops log_ops = {
3624 "line",
3625 log_argv,
3626 NULL,
3627 pager_read,
3628 pager_draw,
3629 log_request,
3630 pager_grep,
3631 pager_select,
3632 };
3634 static const char *diff_argv[SIZEOF_ARG] = {
3635 "git", "show", "--pretty=fuller", "--no-color", "--root",
3636 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3637 };
3639 static struct view_ops diff_ops = {
3640 "line",
3641 diff_argv,
3642 NULL,
3643 pager_read,
3644 pager_draw,
3645 pager_request,
3646 pager_grep,
3647 pager_select,
3648 };
3650 /*
3651 * Help backend
3652 */
3654 static bool
3655 help_open(struct view *view)
3656 {
3657 char buf[SIZEOF_STR];
3658 size_t bufpos;
3659 int i;
3661 if (view->lines > 0)
3662 return TRUE;
3664 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3666 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3667 const char *key;
3669 if (req_info[i].request == REQ_NONE)
3670 continue;
3672 if (!req_info[i].request) {
3673 add_line_text(view, "", LINE_DEFAULT);
3674 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3675 continue;
3676 }
3678 key = get_key(req_info[i].request);
3679 if (!*key)
3680 key = "(no key defined)";
3682 for (bufpos = 0; bufpos <= req_info[i].namelen; bufpos++) {
3683 buf[bufpos] = tolower(req_info[i].name[bufpos]);
3684 if (buf[bufpos] == '_')
3685 buf[bufpos] = '-';
3686 }
3688 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s",
3689 key, buf, req_info[i].help);
3690 }
3692 if (run_requests) {
3693 add_line_text(view, "", LINE_DEFAULT);
3694 add_line_text(view, "External commands:", LINE_DEFAULT);
3695 }
3697 for (i = 0; i < run_requests; i++) {
3698 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3699 const char *key;
3700 int argc;
3702 if (!req)
3703 continue;
3705 key = get_key_name(req->key);
3706 if (!*key)
3707 key = "(no key defined)";
3709 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3710 if (!string_format_from(buf, &bufpos, "%s%s",
3711 argc ? " " : "", req->argv[argc]))
3712 return REQ_NONE;
3714 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3715 keymap_table[req->keymap].name, key, buf);
3716 }
3718 return TRUE;
3719 }
3721 static struct view_ops help_ops = {
3722 "line",
3723 NULL,
3724 help_open,
3725 NULL,
3726 pager_draw,
3727 pager_request,
3728 pager_grep,
3729 pager_select,
3730 };
3733 /*
3734 * Tree backend
3735 */
3737 struct tree_stack_entry {
3738 struct tree_stack_entry *prev; /* Entry below this in the stack */
3739 unsigned long lineno; /* Line number to restore */
3740 char *name; /* Position of name in opt_path */
3741 };
3743 /* The top of the path stack. */
3744 static struct tree_stack_entry *tree_stack = NULL;
3745 unsigned long tree_lineno = 0;
3747 static void
3748 pop_tree_stack_entry(void)
3749 {
3750 struct tree_stack_entry *entry = tree_stack;
3752 tree_lineno = entry->lineno;
3753 entry->name[0] = 0;
3754 tree_stack = entry->prev;
3755 free(entry);
3756 }
3758 static void
3759 push_tree_stack_entry(const char *name, unsigned long lineno)
3760 {
3761 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3762 size_t pathlen = strlen(opt_path);
3764 if (!entry)
3765 return;
3767 entry->prev = tree_stack;
3768 entry->name = opt_path + pathlen;
3769 tree_stack = entry;
3771 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3772 pop_tree_stack_entry();
3773 return;
3774 }
3776 /* Move the current line to the first tree entry. */
3777 tree_lineno = 1;
3778 entry->lineno = lineno;
3779 }
3781 /* Parse output from git-ls-tree(1):
3782 *
3783 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3784 */
3786 #define SIZEOF_TREE_ATTR \
3787 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3789 #define SIZEOF_TREE_MODE \
3790 STRING_SIZE("100644 ")
3792 #define TREE_ID_OFFSET \
3793 STRING_SIZE("100644 blob ")
3795 struct tree_entry {
3796 char id[SIZEOF_REV];
3797 mode_t mode;
3798 struct tm time; /* Date from the author ident. */
3799 char author[75]; /* Author of the commit. */
3800 char name[1];
3801 };
3803 static const char *
3804 tree_path(struct line *line)
3805 {
3806 return ((struct tree_entry *) line->data)->name;
3807 }
3810 static int
3811 tree_compare_entry(struct line *line1, struct line *line2)
3812 {
3813 if (line1->type != line2->type)
3814 return line1->type == LINE_TREE_DIR ? -1 : 1;
3815 return strcmp(tree_path(line1), tree_path(line2));
3816 }
3818 static struct line *
3819 tree_entry(struct view *view, enum line_type type, const char *path,
3820 const char *mode, const char *id)
3821 {
3822 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3823 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3825 if (!entry || !line) {
3826 free(entry);
3827 return NULL;
3828 }
3830 strncpy(entry->name, path, strlen(path));
3831 if (mode)
3832 entry->mode = strtoul(mode, NULL, 8);
3833 if (id)
3834 string_copy_rev(entry->id, id);
3836 return line;
3837 }
3839 static bool
3840 tree_read_date(struct view *view, char *text, bool *read_date)
3841 {
3842 static char author_name[SIZEOF_STR];
3843 static struct tm author_time;
3845 if (!text && *read_date) {
3846 *read_date = FALSE;
3847 return TRUE;
3849 } else if (!text) {
3850 char *path = *opt_path ? opt_path : ".";
3851 /* Find next entry to process */
3852 const char *log_file[] = {
3853 "git", "log", "--no-color", "--pretty=raw",
3854 "--cc", "--raw", view->id, "--", path, NULL
3855 };
3856 struct io io = {};
3858 if (!view->lines) {
3859 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3860 report("Tree is empty");
3861 return TRUE;
3862 }
3864 if (!run_io_rd(&io, log_file, FORMAT_NONE)) {
3865 report("Failed to load tree data");
3866 return TRUE;
3867 }
3869 done_io(view->pipe);
3870 view->io = io;
3871 *read_date = TRUE;
3872 return FALSE;
3874 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3875 parse_author_line(text + STRING_SIZE("author "),
3876 author_name, sizeof(author_name), &author_time);
3878 } else if (*text == ':') {
3879 char *pos;
3880 size_t annotated = 1;
3881 size_t i;
3883 pos = strchr(text, '\t');
3884 if (!pos)
3885 return TRUE;
3886 text = pos + 1;
3887 if (*opt_prefix && !strncmp(text, opt_prefix, strlen(opt_prefix)))
3888 text += strlen(opt_prefix);
3889 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3890 text += strlen(opt_path);
3891 pos = strchr(text, '/');
3892 if (pos)
3893 *pos = 0;
3895 for (i = 1; i < view->lines; i++) {
3896 struct line *line = &view->line[i];
3897 struct tree_entry *entry = line->data;
3899 annotated += !!*entry->author;
3900 if (*entry->author || strcmp(entry->name, text))
3901 continue;
3903 string_copy(entry->author, author_name);
3904 memcpy(&entry->time, &author_time, sizeof(entry->time));
3905 line->dirty = 1;
3906 break;
3907 }
3909 if (annotated == view->lines)
3910 kill_io(view->pipe);
3911 }
3912 return TRUE;
3913 }
3915 static bool
3916 tree_read(struct view *view, char *text)
3917 {
3918 static bool read_date = FALSE;
3919 struct tree_entry *data;
3920 struct line *entry, *line;
3921 enum line_type type;
3922 size_t textlen = text ? strlen(text) : 0;
3923 char *path = text + SIZEOF_TREE_ATTR;
3925 if (read_date || !text)
3926 return tree_read_date(view, text, &read_date);
3928 if (textlen <= SIZEOF_TREE_ATTR)
3929 return FALSE;
3930 if (view->lines == 0 &&
3931 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3932 return FALSE;
3934 /* Strip the path part ... */
3935 if (*opt_path) {
3936 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3937 size_t striplen = strlen(opt_path);
3939 if (pathlen > striplen)
3940 memmove(path, path + striplen,
3941 pathlen - striplen + 1);
3943 /* Insert "link" to parent directory. */
3944 if (view->lines == 1 &&
3945 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3946 return FALSE;
3947 }
3949 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3950 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3951 if (!entry)
3952 return FALSE;
3953 data = entry->data;
3955 /* Skip "Directory ..." and ".." line. */
3956 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
3957 if (tree_compare_entry(line, entry) <= 0)
3958 continue;
3960 memmove(line + 1, line, (entry - line) * sizeof(*entry));
3962 line->data = data;
3963 line->type = type;
3964 for (; line <= entry; line++)
3965 line->dirty = line->cleareol = 1;
3966 return TRUE;
3967 }
3969 if (tree_lineno > view->lineno) {
3970 view->lineno = tree_lineno;
3971 tree_lineno = 0;
3972 }
3974 return TRUE;
3975 }
3977 static bool
3978 tree_draw(struct view *view, struct line *line, unsigned int lineno)
3979 {
3980 struct tree_entry *entry = line->data;
3982 if (line->type == LINE_TREE_HEAD) {
3983 if (draw_text(view, line->type, "Directory path /", TRUE))
3984 return TRUE;
3985 } else {
3986 if (draw_mode(view, entry->mode))
3987 return TRUE;
3989 if (opt_author && draw_author(view, entry->author))
3990 return TRUE;
3992 if (opt_date && draw_date(view, *entry->author ? &entry->time : NULL))
3993 return TRUE;
3994 }
3995 if (draw_text(view, line->type, entry->name, TRUE))
3996 return TRUE;
3997 return TRUE;
3998 }
4000 static void
4001 open_blob_editor()
4002 {
4003 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4004 int fd = mkstemp(file);
4006 if (fd == -1)
4007 report("Failed to create temporary file");
4008 else if (!run_io_append(blob_ops.argv, FORMAT_ALL, fd))
4009 report("Failed to save blob data to file");
4010 else
4011 open_editor(FALSE, file);
4012 if (fd != -1)
4013 unlink(file);
4014 }
4016 static enum request
4017 tree_request(struct view *view, enum request request, struct line *line)
4018 {
4019 enum open_flags flags;
4021 switch (request) {
4022 case REQ_VIEW_BLAME:
4023 if (line->type != LINE_TREE_FILE) {
4024 report("Blame only supported for files");
4025 return REQ_NONE;
4026 }
4028 string_copy(opt_ref, view->vid);
4029 return request;
4031 case REQ_EDIT:
4032 if (line->type != LINE_TREE_FILE) {
4033 report("Edit only supported for files");
4034 } else if (!is_head_commit(view->vid)) {
4035 open_blob_editor();
4036 } else {
4037 open_editor(TRUE, opt_file);
4038 }
4039 return REQ_NONE;
4041 case REQ_PARENT:
4042 if (!*opt_path) {
4043 /* quit view if at top of tree */
4044 return REQ_VIEW_CLOSE;
4045 }
4046 /* fake 'cd ..' */
4047 line = &view->line[1];
4048 break;
4050 case REQ_ENTER:
4051 break;
4053 default:
4054 return request;
4055 }
4057 /* Cleanup the stack if the tree view is at a different tree. */
4058 while (!*opt_path && tree_stack)
4059 pop_tree_stack_entry();
4061 switch (line->type) {
4062 case LINE_TREE_DIR:
4063 /* Depending on whether it is a subdirectory or parent link
4064 * mangle the path buffer. */
4065 if (line == &view->line[1] && *opt_path) {
4066 pop_tree_stack_entry();
4068 } else {
4069 const char *basename = tree_path(line);
4071 push_tree_stack_entry(basename, view->lineno);
4072 }
4074 /* Trees and subtrees share the same ID, so they are not not
4075 * unique like blobs. */
4076 flags = OPEN_RELOAD;
4077 request = REQ_VIEW_TREE;
4078 break;
4080 case LINE_TREE_FILE:
4081 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4082 request = REQ_VIEW_BLOB;
4083 break;
4085 default:
4086 return REQ_NONE;
4087 }
4089 open_view(view, request, flags);
4090 if (request == REQ_VIEW_TREE)
4091 view->lineno = tree_lineno;
4093 return REQ_NONE;
4094 }
4096 static void
4097 tree_select(struct view *view, struct line *line)
4098 {
4099 struct tree_entry *entry = line->data;
4101 if (line->type == LINE_TREE_FILE) {
4102 string_copy_rev(ref_blob, entry->id);
4103 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4105 } else if (line->type != LINE_TREE_DIR) {
4106 return;
4107 }
4109 string_copy_rev(view->ref, entry->id);
4110 }
4112 static const char *tree_argv[SIZEOF_ARG] = {
4113 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4114 };
4116 static struct view_ops tree_ops = {
4117 "file",
4118 tree_argv,
4119 NULL,
4120 tree_read,
4121 tree_draw,
4122 tree_request,
4123 pager_grep,
4124 tree_select,
4125 };
4127 static bool
4128 blob_read(struct view *view, char *line)
4129 {
4130 if (!line)
4131 return TRUE;
4132 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4133 }
4135 static enum request
4136 blob_request(struct view *view, enum request request, struct line *line)
4137 {
4138 switch (request) {
4139 case REQ_EDIT:
4140 open_blob_editor();
4141 return REQ_NONE;
4142 default:
4143 return pager_request(view, request, line);
4144 }
4145 }
4147 static const char *blob_argv[SIZEOF_ARG] = {
4148 "git", "cat-file", "blob", "%(blob)", NULL
4149 };
4151 static struct view_ops blob_ops = {
4152 "line",
4153 blob_argv,
4154 NULL,
4155 blob_read,
4156 pager_draw,
4157 blob_request,
4158 pager_grep,
4159 pager_select,
4160 };
4162 /*
4163 * Blame backend
4164 *
4165 * Loading the blame view is a two phase job:
4166 *
4167 * 1. File content is read either using opt_file from the
4168 * filesystem or using git-cat-file.
4169 * 2. Then blame information is incrementally added by
4170 * reading output from git-blame.
4171 */
4173 static const char *blame_head_argv[] = {
4174 "git", "blame", "--incremental", "--", "%(file)", NULL
4175 };
4177 static const char *blame_ref_argv[] = {
4178 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4179 };
4181 static const char *blame_cat_file_argv[] = {
4182 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4183 };
4185 struct blame_commit {
4186 char id[SIZEOF_REV]; /* SHA1 ID. */
4187 char title[128]; /* First line of the commit message. */
4188 char author[75]; /* Author of the commit. */
4189 struct tm time; /* Date from the author ident. */
4190 char filename[128]; /* Name of file. */
4191 bool has_previous; /* Was a "previous" line detected. */
4192 };
4194 struct blame {
4195 struct blame_commit *commit;
4196 unsigned long lineno;
4197 char text[1];
4198 };
4200 static bool
4201 blame_open(struct view *view)
4202 {
4203 if (*opt_ref || !io_open(&view->io, opt_file)) {
4204 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
4205 return FALSE;
4206 }
4208 setup_update(view, opt_file);
4209 string_format(view->ref, "%s ...", opt_file);
4211 return TRUE;
4212 }
4214 static struct blame_commit *
4215 get_blame_commit(struct view *view, const char *id)
4216 {
4217 size_t i;
4219 for (i = 0; i < view->lines; i++) {
4220 struct blame *blame = view->line[i].data;
4222 if (!blame->commit)
4223 continue;
4225 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4226 return blame->commit;
4227 }
4229 {
4230 struct blame_commit *commit = calloc(1, sizeof(*commit));
4232 if (commit)
4233 string_ncopy(commit->id, id, SIZEOF_REV);
4234 return commit;
4235 }
4236 }
4238 static bool
4239 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4240 {
4241 const char *pos = *posref;
4243 *posref = NULL;
4244 pos = strchr(pos + 1, ' ');
4245 if (!pos || !isdigit(pos[1]))
4246 return FALSE;
4247 *number = atoi(pos + 1);
4248 if (*number < min || *number > max)
4249 return FALSE;
4251 *posref = pos;
4252 return TRUE;
4253 }
4255 static struct blame_commit *
4256 parse_blame_commit(struct view *view, const char *text, int *blamed)
4257 {
4258 struct blame_commit *commit;
4259 struct blame *blame;
4260 const char *pos = text + SIZEOF_REV - 2;
4261 size_t orig_lineno = 0;
4262 size_t lineno;
4263 size_t group;
4265 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4266 return NULL;
4268 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4269 !parse_number(&pos, &lineno, 1, view->lines) ||
4270 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4271 return NULL;
4273 commit = get_blame_commit(view, text);
4274 if (!commit)
4275 return NULL;
4277 *blamed += group;
4278 while (group--) {
4279 struct line *line = &view->line[lineno + group - 1];
4281 blame = line->data;
4282 blame->commit = commit;
4283 blame->lineno = orig_lineno + group - 1;
4284 line->dirty = 1;
4285 }
4287 return commit;
4288 }
4290 static bool
4291 blame_read_file(struct view *view, const char *line, bool *read_file)
4292 {
4293 if (!line) {
4294 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
4295 struct io io = {};
4297 if (view->lines == 0 && !view->parent)
4298 die("No blame exist for %s", view->vid);
4300 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
4301 report("Failed to load blame data");
4302 return TRUE;
4303 }
4305 done_io(view->pipe);
4306 view->io = io;
4307 *read_file = FALSE;
4308 return FALSE;
4310 } else {
4311 size_t linelen = strlen(line);
4312 struct blame *blame = malloc(sizeof(*blame) + linelen);
4314 if (!blame)
4315 return FALSE;
4317 blame->commit = NULL;
4318 strncpy(blame->text, line, linelen);
4319 blame->text[linelen] = 0;
4320 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4321 }
4322 }
4324 static bool
4325 match_blame_header(const char *name, char **line)
4326 {
4327 size_t namelen = strlen(name);
4328 bool matched = !strncmp(name, *line, namelen);
4330 if (matched)
4331 *line += namelen;
4333 return matched;
4334 }
4336 static bool
4337 blame_read(struct view *view, char *line)
4338 {
4339 static struct blame_commit *commit = NULL;
4340 static int blamed = 0;
4341 static time_t author_time;
4342 static bool read_file = TRUE;
4344 if (read_file)
4345 return blame_read_file(view, line, &read_file);
4347 if (!line) {
4348 /* Reset all! */
4349 commit = NULL;
4350 blamed = 0;
4351 read_file = TRUE;
4352 string_format(view->ref, "%s", view->vid);
4353 if (view_is_displayed(view)) {
4354 update_view_title(view);
4355 redraw_view_from(view, 0);
4356 }
4357 return TRUE;
4358 }
4360 if (!commit) {
4361 commit = parse_blame_commit(view, line, &blamed);
4362 string_format(view->ref, "%s %2d%%", view->vid,
4363 view->lines ? blamed * 100 / view->lines : 0);
4365 } else if (match_blame_header("author ", &line)) {
4366 string_ncopy(commit->author, line, strlen(line));
4368 } else if (match_blame_header("author-time ", &line)) {
4369 author_time = (time_t) atol(line);
4371 } else if (match_blame_header("author-tz ", &line)) {
4372 parse_timezone(&author_time, line);
4373 gmtime_r(&author_time, &commit->time);
4375 } else if (match_blame_header("summary ", &line)) {
4376 string_ncopy(commit->title, line, strlen(line));
4378 } else if (match_blame_header("previous ", &line)) {
4379 commit->has_previous = TRUE;
4381 } else if (match_blame_header("filename ", &line)) {
4382 string_ncopy(commit->filename, line, strlen(line));
4383 commit = NULL;
4384 }
4386 return TRUE;
4387 }
4389 static bool
4390 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4391 {
4392 struct blame *blame = line->data;
4393 struct tm *time = NULL;
4394 const char *id = NULL, *author = NULL;
4395 char text[SIZEOF_STR];
4397 if (blame->commit && *blame->commit->filename) {
4398 id = blame->commit->id;
4399 author = blame->commit->author;
4400 time = &blame->commit->time;
4401 }
4403 if (opt_date && draw_date(view, time))
4404 return TRUE;
4406 if (opt_author && draw_author(view, author))
4407 return TRUE;
4409 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4410 return TRUE;
4412 if (draw_lineno(view, lineno))
4413 return TRUE;
4415 string_expand(text, sizeof(text), blame->text, opt_tab_size);
4416 draw_text(view, LINE_DEFAULT, text, TRUE);
4417 return TRUE;
4418 }
4420 static bool
4421 check_blame_commit(struct blame *blame, bool check_null_id)
4422 {
4423 if (!blame->commit)
4424 report("Commit data not loaded yet");
4425 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4426 report("No commit exist for the selected line");
4427 else
4428 return TRUE;
4429 return FALSE;
4430 }
4432 static void
4433 setup_blame_parent_line(struct view *view, struct blame *blame)
4434 {
4435 const char *diff_tree_argv[] = {
4436 "git", "diff-tree", "-U0", blame->commit->id,
4437 "--", blame->commit->filename, NULL
4438 };
4439 struct io io = {};
4440 int parent_lineno = -1;
4441 int blamed_lineno = -1;
4442 char *line;
4444 if (!run_io(&io, diff_tree_argv, NULL, IO_RD))
4445 return;
4447 while ((line = io_get(&io, '\n', TRUE))) {
4448 if (*line == '@') {
4449 char *pos = strchr(line, '+');
4451 parent_lineno = atoi(line + 4);
4452 if (pos)
4453 blamed_lineno = atoi(pos + 1);
4455 } else if (*line == '+' && parent_lineno != -1) {
4456 if (blame->lineno == blamed_lineno - 1 &&
4457 !strcmp(blame->text, line + 1)) {
4458 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4459 break;
4460 }
4461 blamed_lineno++;
4462 }
4463 }
4465 done_io(&io);
4466 }
4468 static enum request
4469 blame_request(struct view *view, enum request request, struct line *line)
4470 {
4471 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4472 struct blame *blame = line->data;
4474 switch (request) {
4475 case REQ_VIEW_BLAME:
4476 if (check_blame_commit(blame, TRUE)) {
4477 string_copy(opt_ref, blame->commit->id);
4478 string_copy(opt_file, blame->commit->filename);
4479 if (blame->lineno)
4480 view->lineno = blame->lineno;
4481 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4482 }
4483 break;
4485 case REQ_PARENT:
4486 if (check_blame_commit(blame, TRUE) &&
4487 select_commit_parent(blame->commit->id, opt_ref,
4488 blame->commit->filename)) {
4489 string_copy(opt_file, blame->commit->filename);
4490 setup_blame_parent_line(view, blame);
4491 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4492 }
4493 break;
4495 case REQ_ENTER:
4496 if (!check_blame_commit(blame, FALSE))
4497 break;
4499 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4500 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4501 break;
4503 if (!strcmp(blame->commit->id, NULL_ID)) {
4504 struct view *diff = VIEW(REQ_VIEW_DIFF);
4505 const char *diff_index_argv[] = {
4506 "git", "diff-index", "--root", "--patch-with-stat",
4507 "-C", "-M", "HEAD", "--", view->vid, NULL
4508 };
4510 if (!blame->commit->has_previous) {
4511 diff_index_argv[1] = "diff";
4512 diff_index_argv[2] = "--no-color";
4513 diff_index_argv[6] = "--";
4514 diff_index_argv[7] = "/dev/null";
4515 }
4517 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4518 report("Failed to allocate diff command");
4519 break;
4520 }
4521 flags |= OPEN_PREPARED;
4522 }
4524 open_view(view, REQ_VIEW_DIFF, flags);
4525 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4526 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4527 break;
4529 default:
4530 return request;
4531 }
4533 return REQ_NONE;
4534 }
4536 static bool
4537 blame_grep(struct view *view, struct line *line)
4538 {
4539 struct blame *blame = line->data;
4540 struct blame_commit *commit = blame->commit;
4541 regmatch_t pmatch;
4543 #define MATCH(text, on) \
4544 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4546 if (commit) {
4547 char buf[DATE_COLS + 1];
4549 if (MATCH(commit->title, 1) ||
4550 MATCH(commit->author, opt_author) ||
4551 MATCH(commit->id, opt_date))
4552 return TRUE;
4554 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
4555 MATCH(buf, 1))
4556 return TRUE;
4557 }
4559 return MATCH(blame->text, 1);
4561 #undef MATCH
4562 }
4564 static void
4565 blame_select(struct view *view, struct line *line)
4566 {
4567 struct blame *blame = line->data;
4568 struct blame_commit *commit = blame->commit;
4570 if (!commit)
4571 return;
4573 if (!strcmp(commit->id, NULL_ID))
4574 string_ncopy(ref_commit, "HEAD", 4);
4575 else
4576 string_copy_rev(ref_commit, commit->id);
4577 }
4579 static struct view_ops blame_ops = {
4580 "line",
4581 NULL,
4582 blame_open,
4583 blame_read,
4584 blame_draw,
4585 blame_request,
4586 blame_grep,
4587 blame_select,
4588 };
4590 /*
4591 * Status backend
4592 */
4594 struct status {
4595 char status;
4596 struct {
4597 mode_t mode;
4598 char rev[SIZEOF_REV];
4599 char name[SIZEOF_STR];
4600 } old;
4601 struct {
4602 mode_t mode;
4603 char rev[SIZEOF_REV];
4604 char name[SIZEOF_STR];
4605 } new;
4606 };
4608 static char status_onbranch[SIZEOF_STR];
4609 static struct status stage_status;
4610 static enum line_type stage_line_type;
4611 static size_t stage_chunks;
4612 static int *stage_chunk;
4614 /* This should work even for the "On branch" line. */
4615 static inline bool
4616 status_has_none(struct view *view, struct line *line)
4617 {
4618 return line < view->line + view->lines && !line[1].data;
4619 }
4621 /* Get fields from the diff line:
4622 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4623 */
4624 static inline bool
4625 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4626 {
4627 const char *old_mode = buf + 1;
4628 const char *new_mode = buf + 8;
4629 const char *old_rev = buf + 15;
4630 const char *new_rev = buf + 56;
4631 const char *status = buf + 97;
4633 if (bufsize < 98 ||
4634 old_mode[-1] != ':' ||
4635 new_mode[-1] != ' ' ||
4636 old_rev[-1] != ' ' ||
4637 new_rev[-1] != ' ' ||
4638 status[-1] != ' ')
4639 return FALSE;
4641 file->status = *status;
4643 string_copy_rev(file->old.rev, old_rev);
4644 string_copy_rev(file->new.rev, new_rev);
4646 file->old.mode = strtoul(old_mode, NULL, 8);
4647 file->new.mode = strtoul(new_mode, NULL, 8);
4649 file->old.name[0] = file->new.name[0] = 0;
4651 return TRUE;
4652 }
4654 static bool
4655 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4656 {
4657 struct status *unmerged = NULL;
4658 char *buf;
4659 struct io io = {};
4661 if (!run_io(&io, argv, NULL, IO_RD))
4662 return FALSE;
4664 add_line_data(view, NULL, type);
4666 while ((buf = io_get(&io, 0, TRUE))) {
4667 struct status *file = unmerged;
4669 if (!file) {
4670 file = calloc(1, sizeof(*file));
4671 if (!file || !add_line_data(view, file, type))
4672 goto error_out;
4673 }
4675 /* Parse diff info part. */
4676 if (status) {
4677 file->status = status;
4678 if (status == 'A')
4679 string_copy(file->old.rev, NULL_ID);
4681 } else if (!file->status || file == unmerged) {
4682 if (!status_get_diff(file, buf, strlen(buf)))
4683 goto error_out;
4685 buf = io_get(&io, 0, TRUE);
4686 if (!buf)
4687 break;
4689 /* Collapse all modified entries that follow an
4690 * associated unmerged entry. */
4691 if (unmerged == file) {
4692 unmerged->status = 'U';
4693 unmerged = NULL;
4694 } else if (file->status == 'U') {
4695 unmerged = file;
4696 }
4697 }
4699 /* Grab the old name for rename/copy. */
4700 if (!*file->old.name &&
4701 (file->status == 'R' || file->status == 'C')) {
4702 string_ncopy(file->old.name, buf, strlen(buf));
4704 buf = io_get(&io, 0, TRUE);
4705 if (!buf)
4706 break;
4707 }
4709 /* git-ls-files just delivers a NUL separated list of
4710 * file names similar to the second half of the
4711 * git-diff-* output. */
4712 string_ncopy(file->new.name, buf, strlen(buf));
4713 if (!*file->old.name)
4714 string_copy(file->old.name, file->new.name);
4715 file = NULL;
4716 }
4718 if (io_error(&io)) {
4719 error_out:
4720 done_io(&io);
4721 return FALSE;
4722 }
4724 if (!view->line[view->lines - 1].data)
4725 add_line_data(view, NULL, LINE_STAT_NONE);
4727 done_io(&io);
4728 return TRUE;
4729 }
4731 /* Don't show unmerged entries in the staged section. */
4732 static const char *status_diff_index_argv[] = {
4733 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4734 "--cached", "-M", "HEAD", NULL
4735 };
4737 static const char *status_diff_files_argv[] = {
4738 "git", "diff-files", "-z", NULL
4739 };
4741 static const char *status_list_other_argv[] = {
4742 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4743 };
4745 static const char *status_list_no_head_argv[] = {
4746 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4747 };
4749 static const char *update_index_argv[] = {
4750 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4751 };
4753 /* Restore the previous line number to stay in the context or select a
4754 * line with something that can be updated. */
4755 static void
4756 status_restore(struct view *view)
4757 {
4758 if (view->p_lineno >= view->lines)
4759 view->p_lineno = view->lines - 1;
4760 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4761 view->p_lineno++;
4762 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4763 view->p_lineno--;
4765 /* If the above fails, always skip the "On branch" line. */
4766 if (view->p_lineno < view->lines)
4767 view->lineno = view->p_lineno;
4768 else
4769 view->lineno = 1;
4771 if (view->lineno < view->offset)
4772 view->offset = view->lineno;
4773 else if (view->offset + view->height <= view->lineno)
4774 view->offset = view->lineno - view->height + 1;
4776 view->p_restore = FALSE;
4777 }
4779 static void
4780 status_update_onbranch(void)
4781 {
4782 static const char *paths[][2] = {
4783 { "rebase-apply/rebasing", "Rebasing" },
4784 { "rebase-apply/applying", "Applying mailbox" },
4785 { "rebase-apply/", "Rebasing mailbox" },
4786 { "rebase-merge/interactive", "Interactive rebase" },
4787 { "rebase-merge/", "Rebase merge" },
4788 { "MERGE_HEAD", "Merging" },
4789 { "BISECT_LOG", "Bisecting" },
4790 { "HEAD", "On branch" },
4791 };
4792 char buf[SIZEOF_STR];
4793 struct stat stat;
4794 int i;
4796 if (is_initial_commit()) {
4797 string_copy(status_onbranch, "Initial commit");
4798 return;
4799 }
4801 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4802 char *head = opt_head;
4804 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4805 lstat(buf, &stat) < 0)
4806 continue;
4808 if (!*opt_head) {
4809 struct io io = {};
4811 if (string_format(buf, "%s/rebase-merge/head-name", opt_git_dir) &&
4812 io_open(&io, buf) &&
4813 io_read_buf(&io, buf, sizeof(buf))) {
4814 head = chomp_string(buf);
4815 if (!prefixcmp(head, "refs/heads/"))
4816 head += STRING_SIZE("refs/heads/");
4817 }
4818 }
4820 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4821 string_copy(status_onbranch, opt_head);
4822 return;
4823 }
4825 string_copy(status_onbranch, "Not currently on any branch");
4826 }
4828 /* First parse staged info using git-diff-index(1), then parse unstaged
4829 * info using git-diff-files(1), and finally untracked files using
4830 * git-ls-files(1). */
4831 static bool
4832 status_open(struct view *view)
4833 {
4834 reset_view(view);
4836 add_line_data(view, NULL, LINE_STAT_HEAD);
4837 status_update_onbranch();
4839 run_io_bg(update_index_argv);
4841 if (is_initial_commit()) {
4842 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4843 return FALSE;
4844 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4845 return FALSE;
4846 }
4848 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4849 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4850 return FALSE;
4852 /* Restore the exact position or use the specialized restore
4853 * mode? */
4854 if (!view->p_restore)
4855 status_restore(view);
4856 return TRUE;
4857 }
4859 static bool
4860 status_draw(struct view *view, struct line *line, unsigned int lineno)
4861 {
4862 struct status *status = line->data;
4863 enum line_type type;
4864 const char *text;
4866 if (!status) {
4867 switch (line->type) {
4868 case LINE_STAT_STAGED:
4869 type = LINE_STAT_SECTION;
4870 text = "Changes to be committed:";
4871 break;
4873 case LINE_STAT_UNSTAGED:
4874 type = LINE_STAT_SECTION;
4875 text = "Changed but not updated:";
4876 break;
4878 case LINE_STAT_UNTRACKED:
4879 type = LINE_STAT_SECTION;
4880 text = "Untracked files:";
4881 break;
4883 case LINE_STAT_NONE:
4884 type = LINE_DEFAULT;
4885 text = " (no files)";
4886 break;
4888 case LINE_STAT_HEAD:
4889 type = LINE_STAT_HEAD;
4890 text = status_onbranch;
4891 break;
4893 default:
4894 return FALSE;
4895 }
4896 } else {
4897 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4899 buf[0] = status->status;
4900 if (draw_text(view, line->type, buf, TRUE))
4901 return TRUE;
4902 type = LINE_DEFAULT;
4903 text = status->new.name;
4904 }
4906 draw_text(view, type, text, TRUE);
4907 return TRUE;
4908 }
4910 static enum request
4911 status_load_error(struct view *view, struct view *stage, const char *path)
4912 {
4913 if (displayed_views() == 2 || display[current_view] != view)
4914 maximize_view(view);
4915 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
4916 return REQ_NONE;
4917 }
4919 static enum request
4920 status_enter(struct view *view, struct line *line)
4921 {
4922 struct status *status = line->data;
4923 const char *oldpath = status ? status->old.name : NULL;
4924 /* Diffs for unmerged entries are empty when passing the new
4925 * path, so leave it empty. */
4926 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4927 const char *info;
4928 enum open_flags split;
4929 struct view *stage = VIEW(REQ_VIEW_STAGE);
4931 if (line->type == LINE_STAT_NONE ||
4932 (!status && line[1].type == LINE_STAT_NONE)) {
4933 report("No file to diff");
4934 return REQ_NONE;
4935 }
4937 switch (line->type) {
4938 case LINE_STAT_STAGED:
4939 if (is_initial_commit()) {
4940 const char *no_head_diff_argv[] = {
4941 "git", "diff", "--no-color", "--patch-with-stat",
4942 "--", "/dev/null", newpath, NULL
4943 };
4945 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4946 return status_load_error(view, stage, newpath);
4947 } else {
4948 const char *index_show_argv[] = {
4949 "git", "diff-index", "--root", "--patch-with-stat",
4950 "-C", "-M", "--cached", "HEAD", "--",
4951 oldpath, newpath, NULL
4952 };
4954 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4955 return status_load_error(view, stage, newpath);
4956 }
4958 if (status)
4959 info = "Staged changes to %s";
4960 else
4961 info = "Staged changes";
4962 break;
4964 case LINE_STAT_UNSTAGED:
4965 {
4966 const char *files_show_argv[] = {
4967 "git", "diff-files", "--root", "--patch-with-stat",
4968 "-C", "-M", "--", oldpath, newpath, NULL
4969 };
4971 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
4972 return status_load_error(view, stage, newpath);
4973 if (status)
4974 info = "Unstaged changes to %s";
4975 else
4976 info = "Unstaged changes";
4977 break;
4978 }
4979 case LINE_STAT_UNTRACKED:
4980 if (!newpath) {
4981 report("No file to show");
4982 return REQ_NONE;
4983 }
4985 if (!suffixcmp(status->new.name, -1, "/")) {
4986 report("Cannot display a directory");
4987 return REQ_NONE;
4988 }
4990 if (!prepare_update_file(stage, newpath))
4991 return status_load_error(view, stage, newpath);
4992 info = "Untracked file %s";
4993 break;
4995 case LINE_STAT_HEAD:
4996 return REQ_NONE;
4998 default:
4999 die("line type %d not handled in switch", line->type);
5000 }
5002 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5003 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5004 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5005 if (status) {
5006 stage_status = *status;
5007 } else {
5008 memset(&stage_status, 0, sizeof(stage_status));
5009 }
5011 stage_line_type = line->type;
5012 stage_chunks = 0;
5013 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5014 }
5016 return REQ_NONE;
5017 }
5019 static bool
5020 status_exists(struct status *status, enum line_type type)
5021 {
5022 struct view *view = VIEW(REQ_VIEW_STATUS);
5023 unsigned long lineno;
5025 for (lineno = 0; lineno < view->lines; lineno++) {
5026 struct line *line = &view->line[lineno];
5027 struct status *pos = line->data;
5029 if (line->type != type)
5030 continue;
5031 if (!pos && (!status || !status->status) && line[1].data) {
5032 select_view_line(view, lineno);
5033 return TRUE;
5034 }
5035 if (pos && !strcmp(status->new.name, pos->new.name)) {
5036 select_view_line(view, lineno);
5037 return TRUE;
5038 }
5039 }
5041 return FALSE;
5042 }
5045 static bool
5046 status_update_prepare(struct io *io, enum line_type type)
5047 {
5048 const char *staged_argv[] = {
5049 "git", "update-index", "-z", "--index-info", NULL
5050 };
5051 const char *others_argv[] = {
5052 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5053 };
5055 switch (type) {
5056 case LINE_STAT_STAGED:
5057 return run_io(io, staged_argv, opt_cdup, IO_WR);
5059 case LINE_STAT_UNSTAGED:
5060 return run_io(io, others_argv, opt_cdup, IO_WR);
5062 case LINE_STAT_UNTRACKED:
5063 return run_io(io, others_argv, NULL, IO_WR);
5065 default:
5066 die("line type %d not handled in switch", type);
5067 return FALSE;
5068 }
5069 }
5071 static bool
5072 status_update_write(struct io *io, struct status *status, enum line_type type)
5073 {
5074 char buf[SIZEOF_STR];
5075 size_t bufsize = 0;
5077 switch (type) {
5078 case LINE_STAT_STAGED:
5079 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5080 status->old.mode,
5081 status->old.rev,
5082 status->old.name, 0))
5083 return FALSE;
5084 break;
5086 case LINE_STAT_UNSTAGED:
5087 case LINE_STAT_UNTRACKED:
5088 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5089 return FALSE;
5090 break;
5092 default:
5093 die("line type %d not handled in switch", type);
5094 }
5096 return io_write(io, buf, bufsize);
5097 }
5099 static bool
5100 status_update_file(struct status *status, enum line_type type)
5101 {
5102 struct io io = {};
5103 bool result;
5105 if (!status_update_prepare(&io, type))
5106 return FALSE;
5108 result = status_update_write(&io, status, type);
5109 return done_io(&io) && result;
5110 }
5112 static bool
5113 status_update_files(struct view *view, struct line *line)
5114 {
5115 char buf[sizeof(view->ref)];
5116 struct io io = {};
5117 bool result = TRUE;
5118 struct line *pos = view->line + view->lines;
5119 int files = 0;
5120 int file, done;
5121 int cursor_y, cursor_x;
5123 if (!status_update_prepare(&io, line->type))
5124 return FALSE;
5126 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5127 files++;
5129 string_copy(buf, view->ref);
5130 getsyx(cursor_y, cursor_x);
5131 for (file = 0, done = 5; result && file < files; line++, file++) {
5132 int almost_done = file * 100 / files;
5134 if (almost_done > done) {
5135 done = almost_done;
5136 string_format(view->ref, "updating file %u of %u (%d%% done)",
5137 file, files, done);
5138 update_view_title(view);
5139 setsyx(cursor_y, cursor_x);
5140 doupdate();
5141 }
5142 result = status_update_write(&io, line->data, line->type);
5143 }
5144 string_copy(view->ref, buf);
5146 return done_io(&io) && result;
5147 }
5149 static bool
5150 status_update(struct view *view)
5151 {
5152 struct line *line = &view->line[view->lineno];
5154 assert(view->lines);
5156 if (!line->data) {
5157 /* This should work even for the "On branch" line. */
5158 if (line < view->line + view->lines && !line[1].data) {
5159 report("Nothing to update");
5160 return FALSE;
5161 }
5163 if (!status_update_files(view, line + 1)) {
5164 report("Failed to update file status");
5165 return FALSE;
5166 }
5168 } else if (!status_update_file(line->data, line->type)) {
5169 report("Failed to update file status");
5170 return FALSE;
5171 }
5173 return TRUE;
5174 }
5176 static bool
5177 status_revert(struct status *status, enum line_type type, bool has_none)
5178 {
5179 if (!status || type != LINE_STAT_UNSTAGED) {
5180 if (type == LINE_STAT_STAGED) {
5181 report("Cannot revert changes to staged files");
5182 } else if (type == LINE_STAT_UNTRACKED) {
5183 report("Cannot revert changes to untracked files");
5184 } else if (has_none) {
5185 report("Nothing to revert");
5186 } else {
5187 report("Cannot revert changes to multiple files");
5188 }
5189 return FALSE;
5191 } else {
5192 char mode[10] = "100644";
5193 const char *reset_argv[] = {
5194 "git", "update-index", "--cacheinfo", mode,
5195 status->old.rev, status->old.name, NULL
5196 };
5197 const char *checkout_argv[] = {
5198 "git", "checkout", "--", status->old.name, NULL
5199 };
5201 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
5202 return FALSE;
5203 string_format(mode, "%o", status->old.mode);
5204 return (status->status != 'U' || run_io_fg(reset_argv, opt_cdup)) &&
5205 run_io_fg(checkout_argv, opt_cdup);
5206 }
5207 }
5209 static enum request
5210 status_request(struct view *view, enum request request, struct line *line)
5211 {
5212 struct status *status = line->data;
5214 switch (request) {
5215 case REQ_STATUS_UPDATE:
5216 if (!status_update(view))
5217 return REQ_NONE;
5218 break;
5220 case REQ_STATUS_REVERT:
5221 if (!status_revert(status, line->type, status_has_none(view, line)))
5222 return REQ_NONE;
5223 break;
5225 case REQ_STATUS_MERGE:
5226 if (!status || status->status != 'U') {
5227 report("Merging only possible for files with unmerged status ('U').");
5228 return REQ_NONE;
5229 }
5230 open_mergetool(status->new.name);
5231 break;
5233 case REQ_EDIT:
5234 if (!status)
5235 return request;
5236 if (status->status == 'D') {
5237 report("File has been deleted.");
5238 return REQ_NONE;
5239 }
5241 open_editor(status->status != '?', status->new.name);
5242 break;
5244 case REQ_VIEW_BLAME:
5245 if (status) {
5246 string_copy(opt_file, status->new.name);
5247 opt_ref[0] = 0;
5248 }
5249 return request;
5251 case REQ_ENTER:
5252 /* After returning the status view has been split to
5253 * show the stage view. No further reloading is
5254 * necessary. */
5255 return status_enter(view, line);
5257 case REQ_REFRESH:
5258 /* Simply reload the view. */
5259 break;
5261 default:
5262 return request;
5263 }
5265 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5267 return REQ_NONE;
5268 }
5270 static void
5271 status_select(struct view *view, struct line *line)
5272 {
5273 struct status *status = line->data;
5274 char file[SIZEOF_STR] = "all files";
5275 const char *text;
5276 const char *key;
5278 if (status && !string_format(file, "'%s'", status->new.name))
5279 return;
5281 if (!status && line[1].type == LINE_STAT_NONE)
5282 line++;
5284 switch (line->type) {
5285 case LINE_STAT_STAGED:
5286 text = "Press %s to unstage %s for commit";
5287 break;
5289 case LINE_STAT_UNSTAGED:
5290 text = "Press %s to stage %s for commit";
5291 break;
5293 case LINE_STAT_UNTRACKED:
5294 text = "Press %s to stage %s for addition";
5295 break;
5297 case LINE_STAT_HEAD:
5298 case LINE_STAT_NONE:
5299 text = "Nothing to update";
5300 break;
5302 default:
5303 die("line type %d not handled in switch", line->type);
5304 }
5306 if (status && status->status == 'U') {
5307 text = "Press %s to resolve conflict in %s";
5308 key = get_key(REQ_STATUS_MERGE);
5310 } else {
5311 key = get_key(REQ_STATUS_UPDATE);
5312 }
5314 string_format(view->ref, text, key, file);
5315 }
5317 static bool
5318 status_grep(struct view *view, struct line *line)
5319 {
5320 struct status *status = line->data;
5321 enum { S_STATUS, S_NAME, S_END } state;
5322 char buf[2] = "?";
5323 regmatch_t pmatch;
5325 if (!status)
5326 return FALSE;
5328 for (state = S_STATUS; state < S_END; state++) {
5329 const char *text;
5331 switch (state) {
5332 case S_NAME: text = status->new.name; break;
5333 case S_STATUS:
5334 buf[0] = status->status;
5335 text = buf;
5336 break;
5338 default:
5339 return FALSE;
5340 }
5342 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5343 return TRUE;
5344 }
5346 return FALSE;
5347 }
5349 static struct view_ops status_ops = {
5350 "file",
5351 NULL,
5352 status_open,
5353 NULL,
5354 status_draw,
5355 status_request,
5356 status_grep,
5357 status_select,
5358 };
5361 static bool
5362 stage_diff_write(struct io *io, struct line *line, struct line *end)
5363 {
5364 while (line < end) {
5365 if (!io_write(io, line->data, strlen(line->data)) ||
5366 !io_write(io, "\n", 1))
5367 return FALSE;
5368 line++;
5369 if (line->type == LINE_DIFF_CHUNK ||
5370 line->type == LINE_DIFF_HEADER)
5371 break;
5372 }
5374 return TRUE;
5375 }
5377 static struct line *
5378 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5379 {
5380 for (; view->line < line; line--)
5381 if (line->type == type)
5382 return line;
5384 return NULL;
5385 }
5387 static bool
5388 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5389 {
5390 const char *apply_argv[SIZEOF_ARG] = {
5391 "git", "apply", "--whitespace=nowarn", NULL
5392 };
5393 struct line *diff_hdr;
5394 struct io io = {};
5395 int argc = 3;
5397 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5398 if (!diff_hdr)
5399 return FALSE;
5401 if (!revert)
5402 apply_argv[argc++] = "--cached";
5403 if (revert || stage_line_type == LINE_STAT_STAGED)
5404 apply_argv[argc++] = "-R";
5405 apply_argv[argc++] = "-";
5406 apply_argv[argc++] = NULL;
5407 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5408 return FALSE;
5410 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5411 !stage_diff_write(&io, chunk, view->line + view->lines))
5412 chunk = NULL;
5414 done_io(&io);
5415 run_io_bg(update_index_argv);
5417 return chunk ? TRUE : FALSE;
5418 }
5420 static bool
5421 stage_update(struct view *view, struct line *line)
5422 {
5423 struct line *chunk = NULL;
5425 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5426 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5428 if (chunk) {
5429 if (!stage_apply_chunk(view, chunk, FALSE)) {
5430 report("Failed to apply chunk");
5431 return FALSE;
5432 }
5434 } else if (!stage_status.status) {
5435 view = VIEW(REQ_VIEW_STATUS);
5437 for (line = view->line; line < view->line + view->lines; line++)
5438 if (line->type == stage_line_type)
5439 break;
5441 if (!status_update_files(view, line + 1)) {
5442 report("Failed to update files");
5443 return FALSE;
5444 }
5446 } else if (!status_update_file(&stage_status, stage_line_type)) {
5447 report("Failed to update file");
5448 return FALSE;
5449 }
5451 return TRUE;
5452 }
5454 static bool
5455 stage_revert(struct view *view, struct line *line)
5456 {
5457 struct line *chunk = NULL;
5459 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5460 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5462 if (chunk) {
5463 if (!prompt_yesno("Are you sure you want to revert changes?"))
5464 return FALSE;
5466 if (!stage_apply_chunk(view, chunk, TRUE)) {
5467 report("Failed to revert chunk");
5468 return FALSE;
5469 }
5470 return TRUE;
5472 } else {
5473 return status_revert(stage_status.status ? &stage_status : NULL,
5474 stage_line_type, FALSE);
5475 }
5476 }
5479 static void
5480 stage_next(struct view *view, struct line *line)
5481 {
5482 int i;
5484 if (!stage_chunks) {
5485 static size_t alloc = 0;
5486 int *tmp;
5488 for (line = view->line; line < view->line + view->lines; line++) {
5489 if (line->type != LINE_DIFF_CHUNK)
5490 continue;
5492 tmp = realloc_items(stage_chunk, &alloc,
5493 stage_chunks, sizeof(*tmp));
5494 if (!tmp) {
5495 report("Allocation failure");
5496 return;
5497 }
5499 stage_chunk = tmp;
5500 stage_chunk[stage_chunks++] = line - view->line;
5501 }
5502 }
5504 for (i = 0; i < stage_chunks; i++) {
5505 if (stage_chunk[i] > view->lineno) {
5506 do_scroll_view(view, stage_chunk[i] - view->lineno);
5507 report("Chunk %d of %d", i + 1, stage_chunks);
5508 return;
5509 }
5510 }
5512 report("No next chunk found");
5513 }
5515 static enum request
5516 stage_request(struct view *view, enum request request, struct line *line)
5517 {
5518 switch (request) {
5519 case REQ_STATUS_UPDATE:
5520 if (!stage_update(view, line))
5521 return REQ_NONE;
5522 break;
5524 case REQ_STATUS_REVERT:
5525 if (!stage_revert(view, line))
5526 return REQ_NONE;
5527 break;
5529 case REQ_STAGE_NEXT:
5530 if (stage_line_type == LINE_STAT_UNTRACKED) {
5531 report("File is untracked; press %s to add",
5532 get_key(REQ_STATUS_UPDATE));
5533 return REQ_NONE;
5534 }
5535 stage_next(view, line);
5536 return REQ_NONE;
5538 case REQ_EDIT:
5539 if (!stage_status.new.name[0])
5540 return request;
5541 if (stage_status.status == 'D') {
5542 report("File has been deleted.");
5543 return REQ_NONE;
5544 }
5546 open_editor(stage_status.status != '?', stage_status.new.name);
5547 break;
5549 case REQ_REFRESH:
5550 /* Reload everything ... */
5551 break;
5553 case REQ_VIEW_BLAME:
5554 if (stage_status.new.name[0]) {
5555 string_copy(opt_file, stage_status.new.name);
5556 opt_ref[0] = 0;
5557 }
5558 return request;
5560 case REQ_ENTER:
5561 return pager_request(view, request, line);
5563 default:
5564 return request;
5565 }
5567 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5568 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5570 /* Check whether the staged entry still exists, and close the
5571 * stage view if it doesn't. */
5572 if (!status_exists(&stage_status, stage_line_type)) {
5573 status_restore(VIEW(REQ_VIEW_STATUS));
5574 return REQ_VIEW_CLOSE;
5575 }
5577 if (stage_line_type == LINE_STAT_UNTRACKED) {
5578 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5579 report("Cannot display a directory");
5580 return REQ_NONE;
5581 }
5583 if (!prepare_update_file(view, stage_status.new.name)) {
5584 report("Failed to open file: %s", strerror(errno));
5585 return REQ_NONE;
5586 }
5587 }
5588 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5590 return REQ_NONE;
5591 }
5593 static struct view_ops stage_ops = {
5594 "line",
5595 NULL,
5596 NULL,
5597 pager_read,
5598 pager_draw,
5599 stage_request,
5600 pager_grep,
5601 pager_select,
5602 };
5605 /*
5606 * Revision graph
5607 */
5609 struct commit {
5610 char id[SIZEOF_REV]; /* SHA1 ID. */
5611 char title[128]; /* First line of the commit message. */
5612 char author[75]; /* Author of the commit. */
5613 struct tm time; /* Date from the author ident. */
5614 struct ref **refs; /* Repository references. */
5615 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5616 size_t graph_size; /* The width of the graph array. */
5617 bool has_parents; /* Rewritten --parents seen. */
5618 };
5620 /* Size of rev graph with no "padding" columns */
5621 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5623 struct rev_graph {
5624 struct rev_graph *prev, *next, *parents;
5625 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5626 size_t size;
5627 struct commit *commit;
5628 size_t pos;
5629 unsigned int boundary:1;
5630 };
5632 /* Parents of the commit being visualized. */
5633 static struct rev_graph graph_parents[4];
5635 /* The current stack of revisions on the graph. */
5636 static struct rev_graph graph_stacks[4] = {
5637 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5638 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5639 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5640 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5641 };
5643 static inline bool
5644 graph_parent_is_merge(struct rev_graph *graph)
5645 {
5646 return graph->parents->size > 1;
5647 }
5649 static inline void
5650 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5651 {
5652 struct commit *commit = graph->commit;
5654 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5655 commit->graph[commit->graph_size++] = symbol;
5656 }
5658 static void
5659 clear_rev_graph(struct rev_graph *graph)
5660 {
5661 graph->boundary = 0;
5662 graph->size = graph->pos = 0;
5663 graph->commit = NULL;
5664 memset(graph->parents, 0, sizeof(*graph->parents));
5665 }
5667 static void
5668 done_rev_graph(struct rev_graph *graph)
5669 {
5670 if (graph_parent_is_merge(graph) &&
5671 graph->pos < graph->size - 1 &&
5672 graph->next->size == graph->size + graph->parents->size - 1) {
5673 size_t i = graph->pos + graph->parents->size - 1;
5675 graph->commit->graph_size = i * 2;
5676 while (i < graph->next->size - 1) {
5677 append_to_rev_graph(graph, ' ');
5678 append_to_rev_graph(graph, '\\');
5679 i++;
5680 }
5681 }
5683 clear_rev_graph(graph);
5684 }
5686 static void
5687 push_rev_graph(struct rev_graph *graph, const char *parent)
5688 {
5689 int i;
5691 /* "Collapse" duplicate parents lines.
5692 *
5693 * FIXME: This needs to also update update the drawn graph but
5694 * for now it just serves as a method for pruning graph lines. */
5695 for (i = 0; i < graph->size; i++)
5696 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5697 return;
5699 if (graph->size < SIZEOF_REVITEMS) {
5700 string_copy_rev(graph->rev[graph->size++], parent);
5701 }
5702 }
5704 static chtype
5705 get_rev_graph_symbol(struct rev_graph *graph)
5706 {
5707 chtype symbol;
5709 if (graph->boundary)
5710 symbol = REVGRAPH_BOUND;
5711 else if (graph->parents->size == 0)
5712 symbol = REVGRAPH_INIT;
5713 else if (graph_parent_is_merge(graph))
5714 symbol = REVGRAPH_MERGE;
5715 else if (graph->pos >= graph->size)
5716 symbol = REVGRAPH_BRANCH;
5717 else
5718 symbol = REVGRAPH_COMMIT;
5720 return symbol;
5721 }
5723 static void
5724 draw_rev_graph(struct rev_graph *graph)
5725 {
5726 struct rev_filler {
5727 chtype separator, line;
5728 };
5729 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5730 static struct rev_filler fillers[] = {
5731 { ' ', '|' },
5732 { '`', '.' },
5733 { '\'', ' ' },
5734 { '/', ' ' },
5735 };
5736 chtype symbol = get_rev_graph_symbol(graph);
5737 struct rev_filler *filler;
5738 size_t i;
5740 if (opt_line_graphics)
5741 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5743 filler = &fillers[DEFAULT];
5745 for (i = 0; i < graph->pos; i++) {
5746 append_to_rev_graph(graph, filler->line);
5747 if (graph_parent_is_merge(graph->prev) &&
5748 graph->prev->pos == i)
5749 filler = &fillers[RSHARP];
5751 append_to_rev_graph(graph, filler->separator);
5752 }
5754 /* Place the symbol for this revision. */
5755 append_to_rev_graph(graph, symbol);
5757 if (graph->prev->size > graph->size)
5758 filler = &fillers[RDIAG];
5759 else
5760 filler = &fillers[DEFAULT];
5762 i++;
5764 for (; i < graph->size; i++) {
5765 append_to_rev_graph(graph, filler->separator);
5766 append_to_rev_graph(graph, filler->line);
5767 if (graph_parent_is_merge(graph->prev) &&
5768 i < graph->prev->pos + graph->parents->size)
5769 filler = &fillers[RSHARP];
5770 if (graph->prev->size > graph->size)
5771 filler = &fillers[LDIAG];
5772 }
5774 if (graph->prev->size > graph->size) {
5775 append_to_rev_graph(graph, filler->separator);
5776 if (filler->line != ' ')
5777 append_to_rev_graph(graph, filler->line);
5778 }
5779 }
5781 /* Prepare the next rev graph */
5782 static void
5783 prepare_rev_graph(struct rev_graph *graph)
5784 {
5785 size_t i;
5787 /* First, traverse all lines of revisions up to the active one. */
5788 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5789 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5790 break;
5792 push_rev_graph(graph->next, graph->rev[graph->pos]);
5793 }
5795 /* Interleave the new revision parent(s). */
5796 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5797 push_rev_graph(graph->next, graph->parents->rev[i]);
5799 /* Lastly, put any remaining revisions. */
5800 for (i = graph->pos + 1; i < graph->size; i++)
5801 push_rev_graph(graph->next, graph->rev[i]);
5802 }
5804 static void
5805 update_rev_graph(struct view *view, struct rev_graph *graph)
5806 {
5807 /* If this is the finalizing update ... */
5808 if (graph->commit)
5809 prepare_rev_graph(graph);
5811 /* Graph visualization needs a one rev look-ahead,
5812 * so the first update doesn't visualize anything. */
5813 if (!graph->prev->commit)
5814 return;
5816 if (view->lines > 2)
5817 view->line[view->lines - 3].dirty = 1;
5818 if (view->lines > 1)
5819 view->line[view->lines - 2].dirty = 1;
5820 draw_rev_graph(graph->prev);
5821 done_rev_graph(graph->prev->prev);
5822 }
5825 /*
5826 * Main view backend
5827 */
5829 static const char *main_argv[SIZEOF_ARG] = {
5830 "git", "log", "--no-color", "--pretty=raw", "--parents",
5831 "--topo-order", "%(head)", NULL
5832 };
5834 static bool
5835 main_draw(struct view *view, struct line *line, unsigned int lineno)
5836 {
5837 struct commit *commit = line->data;
5839 if (!*commit->author)
5840 return FALSE;
5842 if (opt_date && draw_date(view, &commit->time))
5843 return TRUE;
5845 if (opt_author && draw_author(view, commit->author))
5846 return TRUE;
5848 if (opt_rev_graph && commit->graph_size &&
5849 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5850 return TRUE;
5852 if (opt_show_refs && commit->refs) {
5853 size_t i = 0;
5855 do {
5856 enum line_type type;
5858 if (commit->refs[i]->head)
5859 type = LINE_MAIN_HEAD;
5860 else if (commit->refs[i]->ltag)
5861 type = LINE_MAIN_LOCAL_TAG;
5862 else if (commit->refs[i]->tag)
5863 type = LINE_MAIN_TAG;
5864 else if (commit->refs[i]->tracked)
5865 type = LINE_MAIN_TRACKED;
5866 else if (commit->refs[i]->remote)
5867 type = LINE_MAIN_REMOTE;
5868 else
5869 type = LINE_MAIN_REF;
5871 if (draw_text(view, type, "[", TRUE) ||
5872 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5873 draw_text(view, type, "]", TRUE))
5874 return TRUE;
5876 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5877 return TRUE;
5878 } while (commit->refs[i++]->next);
5879 }
5881 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5882 return TRUE;
5883 }
5885 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5886 static bool
5887 main_read(struct view *view, char *line)
5888 {
5889 static struct rev_graph *graph = graph_stacks;
5890 enum line_type type;
5891 struct commit *commit;
5893 if (!line) {
5894 int i;
5896 if (!view->lines && !view->parent)
5897 die("No revisions match the given arguments.");
5898 if (view->lines > 0) {
5899 commit = view->line[view->lines - 1].data;
5900 view->line[view->lines - 1].dirty = 1;
5901 if (!*commit->author) {
5902 view->lines--;
5903 free(commit);
5904 graph->commit = NULL;
5905 }
5906 }
5907 update_rev_graph(view, graph);
5909 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5910 clear_rev_graph(&graph_stacks[i]);
5911 return TRUE;
5912 }
5914 type = get_line_type(line);
5915 if (type == LINE_COMMIT) {
5916 commit = calloc(1, sizeof(struct commit));
5917 if (!commit)
5918 return FALSE;
5920 line += STRING_SIZE("commit ");
5921 if (*line == '-') {
5922 graph->boundary = 1;
5923 line++;
5924 }
5926 string_copy_rev(commit->id, line);
5927 commit->refs = get_refs(commit->id);
5928 graph->commit = commit;
5929 add_line_data(view, commit, LINE_MAIN_COMMIT);
5931 while ((line = strchr(line, ' '))) {
5932 line++;
5933 push_rev_graph(graph->parents, line);
5934 commit->has_parents = TRUE;
5935 }
5936 return TRUE;
5937 }
5939 if (!view->lines)
5940 return TRUE;
5941 commit = view->line[view->lines - 1].data;
5943 switch (type) {
5944 case LINE_PARENT:
5945 if (commit->has_parents)
5946 break;
5947 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5948 break;
5950 case LINE_AUTHOR:
5951 parse_author_line(line + STRING_SIZE("author "),
5952 commit->author, sizeof(commit->author),
5953 &commit->time);
5954 update_rev_graph(view, graph);
5955 graph = graph->next;
5956 break;
5958 default:
5959 /* Fill in the commit title if it has not already been set. */
5960 if (commit->title[0])
5961 break;
5963 /* Require titles to start with a non-space character at the
5964 * offset used by git log. */
5965 if (strncmp(line, " ", 4))
5966 break;
5967 line += 4;
5968 /* Well, if the title starts with a whitespace character,
5969 * try to be forgiving. Otherwise we end up with no title. */
5970 while (isspace(*line))
5971 line++;
5972 if (*line == '\0')
5973 break;
5974 /* FIXME: More graceful handling of titles; append "..." to
5975 * shortened titles, etc. */
5977 string_expand(commit->title, sizeof(commit->title), line, 1);
5978 view->line[view->lines - 1].dirty = 1;
5979 }
5981 return TRUE;
5982 }
5984 static enum request
5985 main_request(struct view *view, enum request request, struct line *line)
5986 {
5987 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5989 switch (request) {
5990 case REQ_ENTER:
5991 open_view(view, REQ_VIEW_DIFF, flags);
5992 break;
5993 case REQ_REFRESH:
5994 load_refs();
5995 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5996 break;
5997 default:
5998 return request;
5999 }
6001 return REQ_NONE;
6002 }
6004 static bool
6005 grep_refs(struct ref **refs, regex_t *regex)
6006 {
6007 regmatch_t pmatch;
6008 size_t i = 0;
6010 if (!refs)
6011 return FALSE;
6012 do {
6013 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6014 return TRUE;
6015 } while (refs[i++]->next);
6017 return FALSE;
6018 }
6020 static bool
6021 main_grep(struct view *view, struct line *line)
6022 {
6023 struct commit *commit = line->data;
6024 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
6025 char buf[DATE_COLS + 1];
6026 regmatch_t pmatch;
6028 for (state = S_TITLE; state < S_END; state++) {
6029 char *text;
6031 switch (state) {
6032 case S_TITLE: text = commit->title; break;
6033 case S_AUTHOR:
6034 if (!opt_author)
6035 continue;
6036 text = commit->author;
6037 break;
6038 case S_DATE:
6039 if (!opt_date)
6040 continue;
6041 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
6042 continue;
6043 text = buf;
6044 break;
6045 case S_REFS:
6046 if (!opt_show_refs)
6047 continue;
6048 if (grep_refs(commit->refs, view->regex) == TRUE)
6049 return TRUE;
6050 continue;
6051 default:
6052 return FALSE;
6053 }
6055 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
6056 return TRUE;
6057 }
6059 return FALSE;
6060 }
6062 static void
6063 main_select(struct view *view, struct line *line)
6064 {
6065 struct commit *commit = line->data;
6067 string_copy_rev(view->ref, commit->id);
6068 string_copy_rev(ref_commit, view->ref);
6069 }
6071 static struct view_ops main_ops = {
6072 "commit",
6073 main_argv,
6074 NULL,
6075 main_read,
6076 main_draw,
6077 main_request,
6078 main_grep,
6079 main_select,
6080 };
6083 /*
6084 * Unicode / UTF-8 handling
6085 *
6086 * NOTE: Much of the following code for dealing with Unicode is derived from
6087 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
6088 * src/intl/charset.c from the UTF-8 branch commit elinks-0.11.0-g31f2c28.
6089 */
6091 static inline int
6092 unicode_width(unsigned long c)
6093 {
6094 if (c >= 0x1100 &&
6095 (c <= 0x115f /* Hangul Jamo */
6096 || c == 0x2329
6097 || c == 0x232a
6098 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
6099 /* CJK ... Yi */
6100 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
6101 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
6102 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
6103 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
6104 || (c >= 0xffe0 && c <= 0xffe6)
6105 || (c >= 0x20000 && c <= 0x2fffd)
6106 || (c >= 0x30000 && c <= 0x3fffd)))
6107 return 2;
6109 if (c == '\t')
6110 return opt_tab_size;
6112 return 1;
6113 }
6115 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
6116 * Illegal bytes are set one. */
6117 static const unsigned char utf8_bytes[256] = {
6118 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,
6119 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,
6120 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,
6121 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,
6122 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,
6123 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,
6124 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,
6125 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,
6126 };
6128 /* Decode UTF-8 multi-byte representation into a Unicode character. */
6129 static inline unsigned long
6130 utf8_to_unicode(const char *string, size_t length)
6131 {
6132 unsigned long unicode;
6134 switch (length) {
6135 case 1:
6136 unicode = string[0];
6137 break;
6138 case 2:
6139 unicode = (string[0] & 0x1f) << 6;
6140 unicode += (string[1] & 0x3f);
6141 break;
6142 case 3:
6143 unicode = (string[0] & 0x0f) << 12;
6144 unicode += ((string[1] & 0x3f) << 6);
6145 unicode += (string[2] & 0x3f);
6146 break;
6147 case 4:
6148 unicode = (string[0] & 0x0f) << 18;
6149 unicode += ((string[1] & 0x3f) << 12);
6150 unicode += ((string[2] & 0x3f) << 6);
6151 unicode += (string[3] & 0x3f);
6152 break;
6153 case 5:
6154 unicode = (string[0] & 0x0f) << 24;
6155 unicode += ((string[1] & 0x3f) << 18);
6156 unicode += ((string[2] & 0x3f) << 12);
6157 unicode += ((string[3] & 0x3f) << 6);
6158 unicode += (string[4] & 0x3f);
6159 break;
6160 case 6:
6161 unicode = (string[0] & 0x01) << 30;
6162 unicode += ((string[1] & 0x3f) << 24);
6163 unicode += ((string[2] & 0x3f) << 18);
6164 unicode += ((string[3] & 0x3f) << 12);
6165 unicode += ((string[4] & 0x3f) << 6);
6166 unicode += (string[5] & 0x3f);
6167 break;
6168 default:
6169 die("Invalid Unicode length");
6170 }
6172 /* Invalid characters could return the special 0xfffd value but NUL
6173 * should be just as good. */
6174 return unicode > 0xffff ? 0 : unicode;
6175 }
6177 /* Calculates how much of string can be shown within the given maximum width
6178 * and sets trimmed parameter to non-zero value if all of string could not be
6179 * shown. If the reserve flag is TRUE, it will reserve at least one
6180 * trailing character, which can be useful when drawing a delimiter.
6181 *
6182 * Returns the number of bytes to output from string to satisfy max_width. */
6183 static size_t
6184 utf8_length(const char **start, size_t skip, int *width, size_t max_width, int *trimmed, bool reserve)
6185 {
6186 const char *string = *start;
6187 const char *end = strchr(string, '\0');
6188 unsigned char last_bytes = 0;
6189 size_t last_ucwidth = 0;
6191 *width = 0;
6192 *trimmed = 0;
6194 while (string < end) {
6195 int c = *(unsigned char *) string;
6196 unsigned char bytes = utf8_bytes[c];
6197 size_t ucwidth;
6198 unsigned long unicode;
6200 if (string + bytes > end)
6201 break;
6203 /* Change representation to figure out whether
6204 * it is a single- or double-width character. */
6206 unicode = utf8_to_unicode(string, bytes);
6207 /* FIXME: Graceful handling of invalid Unicode character. */
6208 if (!unicode)
6209 break;
6211 ucwidth = unicode_width(unicode);
6212 if (skip > 0) {
6213 skip -= ucwidth <= skip ? ucwidth : skip;
6214 *start += bytes;
6215 }
6216 *width += ucwidth;
6217 if (*width > max_width) {
6218 *trimmed = 1;
6219 *width -= ucwidth;
6220 if (reserve && *width == max_width) {
6221 string -= last_bytes;
6222 *width -= last_ucwidth;
6223 }
6224 break;
6225 }
6227 string += bytes;
6228 last_bytes = ucwidth ? bytes : 0;
6229 last_ucwidth = ucwidth;
6230 }
6232 return string - *start;
6233 }
6236 /*
6237 * Status management
6238 */
6240 /* Whether or not the curses interface has been initialized. */
6241 static bool cursed = FALSE;
6243 /* Terminal hacks and workarounds. */
6244 static bool use_scroll_redrawwin;
6245 static bool use_scroll_status_wclear;
6247 /* The status window is used for polling keystrokes. */
6248 static WINDOW *status_win;
6250 /* Reading from the prompt? */
6251 static bool input_mode = FALSE;
6253 static bool status_empty = FALSE;
6255 /* Update status and title window. */
6256 static void
6257 report(const char *msg, ...)
6258 {
6259 struct view *view = display[current_view];
6261 if (input_mode)
6262 return;
6264 if (!view) {
6265 char buf[SIZEOF_STR];
6266 va_list args;
6268 va_start(args, msg);
6269 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6270 buf[sizeof(buf) - 1] = 0;
6271 buf[sizeof(buf) - 2] = '.';
6272 buf[sizeof(buf) - 3] = '.';
6273 buf[sizeof(buf) - 4] = '.';
6274 }
6275 va_end(args);
6276 die("%s", buf);
6277 }
6279 if (!status_empty || *msg) {
6280 va_list args;
6282 va_start(args, msg);
6284 wmove(status_win, 0, 0);
6285 if (view->has_scrolled && use_scroll_status_wclear)
6286 wclear(status_win);
6287 if (*msg) {
6288 vwprintw(status_win, msg, args);
6289 status_empty = FALSE;
6290 } else {
6291 status_empty = TRUE;
6292 }
6293 wclrtoeol(status_win);
6294 wnoutrefresh(status_win);
6296 va_end(args);
6297 }
6299 update_view_title(view);
6300 }
6302 /* Controls when nodelay should be in effect when polling user input. */
6303 static void
6304 set_nonblocking_input(bool loading)
6305 {
6306 static unsigned int loading_views;
6308 if ((loading == FALSE && loading_views-- == 1) ||
6309 (loading == TRUE && loading_views++ == 0))
6310 nodelay(status_win, loading);
6311 }
6313 static void
6314 init_display(void)
6315 {
6316 const char *term;
6317 int x, y;
6319 /* Initialize the curses library */
6320 if (isatty(STDIN_FILENO)) {
6321 cursed = !!initscr();
6322 opt_tty = stdin;
6323 } else {
6324 /* Leave stdin and stdout alone when acting as a pager. */
6325 opt_tty = fopen("/dev/tty", "r+");
6326 if (!opt_tty)
6327 die("Failed to open /dev/tty");
6328 cursed = !!newterm(NULL, opt_tty, opt_tty);
6329 }
6331 if (!cursed)
6332 die("Failed to initialize curses");
6334 nonl(); /* Disable conversion and detect newlines from input. */
6335 cbreak(); /* Take input chars one at a time, no wait for \n */
6336 noecho(); /* Don't echo input */
6337 leaveok(stdscr, FALSE);
6339 if (has_colors())
6340 init_colors();
6342 getmaxyx(stdscr, y, x);
6343 status_win = newwin(1, 0, y - 1, 0);
6344 if (!status_win)
6345 die("Failed to create status window");
6347 /* Enable keyboard mapping */
6348 keypad(status_win, TRUE);
6349 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6351 TABSIZE = opt_tab_size;
6352 if (opt_line_graphics) {
6353 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
6354 }
6356 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6357 if (term && !strcmp(term, "gnome-terminal")) {
6358 /* In the gnome-terminal-emulator, the message from
6359 * scrolling up one line when impossible followed by
6360 * scrolling down one line causes corruption of the
6361 * status line. This is fixed by calling wclear. */
6362 use_scroll_status_wclear = TRUE;
6363 use_scroll_redrawwin = FALSE;
6365 } else if (term && !strcmp(term, "xrvt-xpm")) {
6366 /* No problems with full optimizations in xrvt-(unicode)
6367 * and aterm. */
6368 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6370 } else {
6371 /* When scrolling in (u)xterm the last line in the
6372 * scrolling direction will update slowly. */
6373 use_scroll_redrawwin = TRUE;
6374 use_scroll_status_wclear = FALSE;
6375 }
6376 }
6378 static int
6379 get_input(int prompt_position)
6380 {
6381 struct view *view;
6382 int i, key, cursor_y, cursor_x;
6384 if (prompt_position)
6385 input_mode = TRUE;
6387 while (TRUE) {
6388 foreach_view (view, i) {
6389 update_view(view);
6390 if (view_is_displayed(view) && view->has_scrolled &&
6391 use_scroll_redrawwin)
6392 redrawwin(view->win);
6393 view->has_scrolled = FALSE;
6394 }
6396 /* Update the cursor position. */
6397 if (prompt_position) {
6398 getbegyx(status_win, cursor_y, cursor_x);
6399 cursor_x = prompt_position;
6400 } else {
6401 view = display[current_view];
6402 getbegyx(view->win, cursor_y, cursor_x);
6403 cursor_x = view->width - 1;
6404 cursor_y += view->lineno - view->offset;
6405 }
6406 setsyx(cursor_y, cursor_x);
6408 /* Refresh, accept single keystroke of input */
6409 doupdate();
6410 key = wgetch(status_win);
6412 /* wgetch() with nodelay() enabled returns ERR when
6413 * there's no input. */
6414 if (key == ERR) {
6416 } else if (key == KEY_RESIZE) {
6417 int height, width;
6419 getmaxyx(stdscr, height, width);
6421 wresize(status_win, 1, width);
6422 mvwin(status_win, height - 1, 0);
6423 wnoutrefresh(status_win);
6424 resize_display();
6425 redraw_display(TRUE);
6427 } else {
6428 input_mode = FALSE;
6429 return key;
6430 }
6431 }
6432 }
6434 static char *
6435 prompt_input(const char *prompt, input_handler handler, void *data)
6436 {
6437 enum input_status status = INPUT_OK;
6438 static char buf[SIZEOF_STR];
6439 size_t pos = 0;
6441 buf[pos] = 0;
6443 while (status == INPUT_OK || status == INPUT_SKIP) {
6444 int key;
6446 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6447 wclrtoeol(status_win);
6449 key = get_input(pos + 1);
6450 switch (key) {
6451 case KEY_RETURN:
6452 case KEY_ENTER:
6453 case '\n':
6454 status = pos ? INPUT_STOP : INPUT_CANCEL;
6455 break;
6457 case KEY_BACKSPACE:
6458 if (pos > 0)
6459 buf[--pos] = 0;
6460 else
6461 status = INPUT_CANCEL;
6462 break;
6464 case KEY_ESC:
6465 status = INPUT_CANCEL;
6466 break;
6468 default:
6469 if (pos >= sizeof(buf)) {
6470 report("Input string too long");
6471 return NULL;
6472 }
6474 status = handler(data, buf, key);
6475 if (status == INPUT_OK)
6476 buf[pos++] = (char) key;
6477 }
6478 }
6480 /* Clear the status window */
6481 status_empty = FALSE;
6482 report("");
6484 if (status == INPUT_CANCEL)
6485 return NULL;
6487 buf[pos++] = 0;
6489 return buf;
6490 }
6492 static enum input_status
6493 prompt_yesno_handler(void *data, char *buf, int c)
6494 {
6495 if (c == 'y' || c == 'Y')
6496 return INPUT_STOP;
6497 if (c == 'n' || c == 'N')
6498 return INPUT_CANCEL;
6499 return INPUT_SKIP;
6500 }
6502 static bool
6503 prompt_yesno(const char *prompt)
6504 {
6505 char prompt2[SIZEOF_STR];
6507 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6508 return FALSE;
6510 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6511 }
6513 static enum input_status
6514 read_prompt_handler(void *data, char *buf, int c)
6515 {
6516 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6517 }
6519 static char *
6520 read_prompt(const char *prompt)
6521 {
6522 return prompt_input(prompt, read_prompt_handler, NULL);
6523 }
6525 /*
6526 * Repository properties
6527 */
6529 static struct ref *refs = NULL;
6530 static size_t refs_alloc = 0;
6531 static size_t refs_size = 0;
6533 /* Id <-> ref store */
6534 static struct ref ***id_refs = NULL;
6535 static size_t id_refs_alloc = 0;
6536 static size_t id_refs_size = 0;
6538 static int
6539 compare_refs(const void *ref1_, const void *ref2_)
6540 {
6541 const struct ref *ref1 = *(const struct ref **)ref1_;
6542 const struct ref *ref2 = *(const struct ref **)ref2_;
6544 if (ref1->tag != ref2->tag)
6545 return ref2->tag - ref1->tag;
6546 if (ref1->ltag != ref2->ltag)
6547 return ref2->ltag - ref2->ltag;
6548 if (ref1->head != ref2->head)
6549 return ref2->head - ref1->head;
6550 if (ref1->tracked != ref2->tracked)
6551 return ref2->tracked - ref1->tracked;
6552 if (ref1->remote != ref2->remote)
6553 return ref2->remote - ref1->remote;
6554 return strcmp(ref1->name, ref2->name);
6555 }
6557 static struct ref **
6558 get_refs(const char *id)
6559 {
6560 struct ref ***tmp_id_refs;
6561 struct ref **ref_list = NULL;
6562 size_t ref_list_alloc = 0;
6563 size_t ref_list_size = 0;
6564 size_t i;
6566 for (i = 0; i < id_refs_size; i++)
6567 if (!strcmp(id, id_refs[i][0]->id))
6568 return id_refs[i];
6570 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6571 sizeof(*id_refs));
6572 if (!tmp_id_refs)
6573 return NULL;
6575 id_refs = tmp_id_refs;
6577 for (i = 0; i < refs_size; i++) {
6578 struct ref **tmp;
6580 if (strcmp(id, refs[i].id))
6581 continue;
6583 tmp = realloc_items(ref_list, &ref_list_alloc,
6584 ref_list_size + 1, sizeof(*ref_list));
6585 if (!tmp) {
6586 if (ref_list)
6587 free(ref_list);
6588 return NULL;
6589 }
6591 ref_list = tmp;
6592 ref_list[ref_list_size] = &refs[i];
6593 /* XXX: The properties of the commit chains ensures that we can
6594 * safely modify the shared ref. The repo references will
6595 * always be similar for the same id. */
6596 ref_list[ref_list_size]->next = 1;
6598 ref_list_size++;
6599 }
6601 if (ref_list) {
6602 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6603 ref_list[ref_list_size - 1]->next = 0;
6604 id_refs[id_refs_size++] = ref_list;
6605 }
6607 return ref_list;
6608 }
6610 static int
6611 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6612 {
6613 struct ref *ref;
6614 bool tag = FALSE;
6615 bool ltag = FALSE;
6616 bool remote = FALSE;
6617 bool tracked = FALSE;
6618 bool check_replace = FALSE;
6619 bool head = FALSE;
6621 if (!prefixcmp(name, "refs/tags/")) {
6622 if (!suffixcmp(name, namelen, "^{}")) {
6623 namelen -= 3;
6624 name[namelen] = 0;
6625 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6626 check_replace = TRUE;
6627 } else {
6628 ltag = TRUE;
6629 }
6631 tag = TRUE;
6632 namelen -= STRING_SIZE("refs/tags/");
6633 name += STRING_SIZE("refs/tags/");
6635 } else if (!prefixcmp(name, "refs/remotes/")) {
6636 remote = TRUE;
6637 namelen -= STRING_SIZE("refs/remotes/");
6638 name += STRING_SIZE("refs/remotes/");
6639 tracked = !strcmp(opt_remote, name);
6641 } else if (!prefixcmp(name, "refs/heads/")) {
6642 namelen -= STRING_SIZE("refs/heads/");
6643 name += STRING_SIZE("refs/heads/");
6644 head = !strncmp(opt_head, name, namelen);
6646 } else if (!strcmp(name, "HEAD")) {
6647 string_ncopy(opt_head_rev, id, idlen);
6648 return OK;
6649 }
6651 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6652 /* it's an annotated tag, replace the previous SHA1 with the
6653 * resolved commit id; relies on the fact git-ls-remote lists
6654 * the commit id of an annotated tag right before the commit id
6655 * it points to. */
6656 refs[refs_size - 1].ltag = ltag;
6657 string_copy_rev(refs[refs_size - 1].id, id);
6659 return OK;
6660 }
6661 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6662 if (!refs)
6663 return ERR;
6665 ref = &refs[refs_size++];
6666 ref->name = malloc(namelen + 1);
6667 if (!ref->name)
6668 return ERR;
6670 strncpy(ref->name, name, namelen);
6671 ref->name[namelen] = 0;
6672 ref->head = head;
6673 ref->tag = tag;
6674 ref->ltag = ltag;
6675 ref->remote = remote;
6676 ref->tracked = tracked;
6677 string_copy_rev(ref->id, id);
6679 return OK;
6680 }
6682 static int
6683 load_refs(void)
6684 {
6685 static const char *ls_remote_argv[SIZEOF_ARG] = {
6686 "git", "ls-remote", opt_git_dir, NULL
6687 };
6688 static bool init = FALSE;
6690 if (!init) {
6691 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6692 init = TRUE;
6693 }
6695 if (!*opt_git_dir)
6696 return OK;
6698 while (refs_size > 0)
6699 free(refs[--refs_size].name);
6700 while (id_refs_size > 0)
6701 free(id_refs[--id_refs_size]);
6703 return run_io_load(ls_remote_argv, "\t", read_ref);
6704 }
6706 static void
6707 set_remote_branch(const char *name, const char *value, size_t valuelen)
6708 {
6709 if (!strcmp(name, ".remote")) {
6710 string_ncopy(opt_remote, value, valuelen);
6712 } else if (*opt_remote && !strcmp(name, ".merge")) {
6713 size_t from = strlen(opt_remote);
6715 if (!prefixcmp(value, "refs/heads/"))
6716 value += STRING_SIZE("refs/heads/");
6718 if (!string_format_from(opt_remote, &from, "/%s", value))
6719 opt_remote[0] = 0;
6720 }
6721 }
6723 static void
6724 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
6725 {
6726 const char *argv[SIZEOF_ARG] = { name, "=" };
6727 int argc = 1 + (cmd == option_set_command);
6728 int error = ERR;
6730 if (!argv_from_string(argv, &argc, value))
6731 config_msg = "Too many option arguments";
6732 else
6733 error = cmd(argc, argv);
6735 if (error == ERR)
6736 warn("Option 'tig.%s': %s", name, config_msg);
6737 }
6739 static bool
6740 set_environment_variable(const char *name, const char *value)
6741 {
6742 size_t len = strlen(name) + 1 + strlen(value) + 1;
6743 char *env = malloc(len);
6745 if (env &&
6746 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6747 putenv(env) == 0)
6748 return TRUE;
6749 free(env);
6750 return FALSE;
6751 }
6753 static void
6754 set_work_tree(const char *value)
6755 {
6756 char cwd[SIZEOF_STR];
6758 if (!getcwd(cwd, sizeof(cwd)))
6759 die("Failed to get cwd path: %s", strerror(errno));
6760 if (chdir(opt_git_dir) < 0)
6761 die("Failed to chdir(%s): %s", strerror(errno));
6762 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6763 die("Failed to get git path: %s", strerror(errno));
6764 if (chdir(cwd) < 0)
6765 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6766 if (chdir(value) < 0)
6767 die("Failed to chdir(%s): %s", value, strerror(errno));
6768 if (!getcwd(cwd, sizeof(cwd)))
6769 die("Failed to get cwd path: %s", strerror(errno));
6770 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6771 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6772 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6773 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6774 opt_is_inside_work_tree = TRUE;
6775 }
6777 static int
6778 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6779 {
6780 if (!strcmp(name, "i18n.commitencoding"))
6781 string_ncopy(opt_encoding, value, valuelen);
6783 else if (!strcmp(name, "core.editor"))
6784 string_ncopy(opt_editor, value, valuelen);
6786 else if (!strcmp(name, "core.worktree"))
6787 set_work_tree(value);
6789 else if (!prefixcmp(name, "tig.color."))
6790 set_repo_config_option(name + 10, value, option_color_command);
6792 else if (!prefixcmp(name, "tig.bind."))
6793 set_repo_config_option(name + 9, value, option_bind_command);
6795 else if (!prefixcmp(name, "tig."))
6796 set_repo_config_option(name + 4, value, option_set_command);
6798 else if (*opt_head && !prefixcmp(name, "branch.") &&
6799 !strncmp(name + 7, opt_head, strlen(opt_head)))
6800 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6802 return OK;
6803 }
6805 static int
6806 load_git_config(void)
6807 {
6808 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6810 return run_io_load(config_list_argv, "=", read_repo_config_option);
6811 }
6813 static int
6814 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6815 {
6816 if (!opt_git_dir[0]) {
6817 string_ncopy(opt_git_dir, name, namelen);
6819 } else if (opt_is_inside_work_tree == -1) {
6820 /* This can be 3 different values depending on the
6821 * version of git being used. If git-rev-parse does not
6822 * understand --is-inside-work-tree it will simply echo
6823 * the option else either "true" or "false" is printed.
6824 * Default to true for the unknown case. */
6825 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6827 } else if (*name == '.') {
6828 string_ncopy(opt_cdup, name, namelen);
6830 } else {
6831 string_ncopy(opt_prefix, name, namelen);
6832 }
6834 return OK;
6835 }
6837 static int
6838 load_repo_info(void)
6839 {
6840 const char *head_argv[] = {
6841 "git", "symbolic-ref", "HEAD", NULL
6842 };
6843 const char *rev_parse_argv[] = {
6844 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6845 "--show-cdup", "--show-prefix", NULL
6846 };
6848 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6849 chomp_string(opt_head);
6850 if (!prefixcmp(opt_head, "refs/heads/")) {
6851 char *offset = opt_head + STRING_SIZE("refs/heads/");
6853 memmove(opt_head, offset, strlen(offset) + 1);
6854 }
6855 }
6857 return run_io_load(rev_parse_argv, "=", read_repo_info);
6858 }
6861 /*
6862 * Main
6863 */
6865 static const char usage[] =
6866 "tig " TIG_VERSION " (" __DATE__ ")\n"
6867 "\n"
6868 "Usage: tig [options] [revs] [--] [paths]\n"
6869 " or: tig show [options] [revs] [--] [paths]\n"
6870 " or: tig blame [rev] path\n"
6871 " or: tig status\n"
6872 " or: tig < [git command output]\n"
6873 "\n"
6874 "Options:\n"
6875 " -v, --version Show version and exit\n"
6876 " -h, --help Show help message and exit";
6878 static void __NORETURN
6879 quit(int sig)
6880 {
6881 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6882 if (cursed)
6883 endwin();
6884 exit(0);
6885 }
6887 static void __NORETURN
6888 die(const char *err, ...)
6889 {
6890 va_list args;
6892 endwin();
6894 va_start(args, err);
6895 fputs("tig: ", stderr);
6896 vfprintf(stderr, err, args);
6897 fputs("\n", stderr);
6898 va_end(args);
6900 exit(1);
6901 }
6903 static void
6904 warn(const char *msg, ...)
6905 {
6906 va_list args;
6908 va_start(args, msg);
6909 fputs("tig warning: ", stderr);
6910 vfprintf(stderr, msg, args);
6911 fputs("\n", stderr);
6912 va_end(args);
6913 }
6915 static enum request
6916 parse_options(int argc, const char *argv[])
6917 {
6918 enum request request = REQ_VIEW_MAIN;
6919 const char *subcommand;
6920 bool seen_dashdash = FALSE;
6921 /* XXX: This is vulnerable to the user overriding options
6922 * required for the main view parser. */
6923 const char *custom_argv[SIZEOF_ARG] = {
6924 "git", "log", "--no-color", "--pretty=raw", "--parents",
6925 "--topo-order", NULL
6926 };
6927 int i, j = 6;
6929 if (!isatty(STDIN_FILENO)) {
6930 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
6931 return REQ_VIEW_PAGER;
6932 }
6934 if (argc <= 1)
6935 return REQ_NONE;
6937 subcommand = argv[1];
6938 if (!strcmp(subcommand, "status")) {
6939 if (argc > 2)
6940 warn("ignoring arguments after `%s'", subcommand);
6941 return REQ_VIEW_STATUS;
6943 } else if (!strcmp(subcommand, "blame")) {
6944 if (argc <= 2 || argc > 4)
6945 die("invalid number of options to blame\n\n%s", usage);
6947 i = 2;
6948 if (argc == 4) {
6949 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
6950 i++;
6951 }
6953 string_ncopy(opt_file, argv[i], strlen(argv[i]));
6954 return REQ_VIEW_BLAME;
6956 } else if (!strcmp(subcommand, "show")) {
6957 request = REQ_VIEW_DIFF;
6959 } else {
6960 subcommand = NULL;
6961 }
6963 if (subcommand) {
6964 custom_argv[1] = subcommand;
6965 j = 2;
6966 }
6968 for (i = 1 + !!subcommand; i < argc; i++) {
6969 const char *opt = argv[i];
6971 if (seen_dashdash || !strcmp(opt, "--")) {
6972 seen_dashdash = TRUE;
6974 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6975 printf("tig version %s\n", TIG_VERSION);
6976 quit(0);
6978 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6979 printf("%s\n", usage);
6980 quit(0);
6981 }
6983 custom_argv[j++] = opt;
6984 if (j >= ARRAY_SIZE(custom_argv))
6985 die("command too long");
6986 }
6988 if (!prepare_update(VIEW(request), custom_argv, NULL, FORMAT_NONE))
6989 die("Failed to format arguments");
6991 return request;
6992 }
6994 int
6995 main(int argc, const char *argv[])
6996 {
6997 enum request request = parse_options(argc, argv);
6998 struct view *view;
6999 size_t i;
7001 signal(SIGINT, quit);
7002 signal(SIGPIPE, SIG_IGN);
7004 if (setlocale(LC_ALL, "")) {
7005 char *codeset = nl_langinfo(CODESET);
7007 string_ncopy(opt_codeset, codeset, strlen(codeset));
7008 }
7010 if (load_repo_info() == ERR)
7011 die("Failed to load repo info.");
7013 if (load_options() == ERR)
7014 die("Failed to load user config.");
7016 if (load_git_config() == ERR)
7017 die("Failed to load repo config.");
7019 /* Require a git repository unless when running in pager mode. */
7020 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7021 die("Not a git repository");
7023 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
7024 opt_utf8 = FALSE;
7026 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
7027 opt_iconv = iconv_open(opt_codeset, opt_encoding);
7028 if (opt_iconv == ICONV_NONE)
7029 die("Failed to initialize character set conversion");
7030 }
7032 if (load_refs() == ERR)
7033 die("Failed to load refs.");
7035 foreach_view (view, i)
7036 argv_from_env(view->ops->argv, view->cmd_env);
7038 init_display();
7040 if (request != REQ_NONE)
7041 open_view(NULL, request, OPEN_PREPARED);
7042 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7044 while (view_driver(display[current_view], request)) {
7045 int key = get_input(0);
7047 view = display[current_view];
7048 request = get_keybinding(view->keymap, key);
7050 /* Some low-level request handling. This keeps access to
7051 * status_win restricted. */
7052 switch (request) {
7053 case REQ_PROMPT:
7054 {
7055 char *cmd = read_prompt(":");
7057 if (cmd && isdigit(*cmd)) {
7058 int lineno = view->lineno + 1;
7060 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7061 select_view_line(view, lineno - 1);
7062 report("");
7063 } else {
7064 report("Unable to parse '%s' as a line number", cmd);
7065 }
7067 } else if (cmd) {
7068 struct view *next = VIEW(REQ_VIEW_PAGER);
7069 const char *argv[SIZEOF_ARG] = { "git" };
7070 int argc = 1;
7072 /* When running random commands, initially show the
7073 * command in the title. However, it maybe later be
7074 * overwritten if a commit line is selected. */
7075 string_ncopy(next->ref, cmd, strlen(cmd));
7077 if (!argv_from_string(argv, &argc, cmd)) {
7078 report("Too many arguments");
7079 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
7080 report("Failed to format command");
7081 } else {
7082 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7083 }
7084 }
7086 request = REQ_NONE;
7087 break;
7088 }
7089 case REQ_SEARCH:
7090 case REQ_SEARCH_BACK:
7091 {
7092 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7093 char *search = read_prompt(prompt);
7095 if (search)
7096 string_ncopy(opt_search, search, strlen(search));
7097 else if (*opt_search)
7098 request = request == REQ_SEARCH ?
7099 REQ_FIND_NEXT :
7100 REQ_FIND_PREV;
7101 else
7102 request = REQ_NONE;
7103 break;
7104 }
7105 default:
7106 break;
7107 }
7108 }
7110 quit(0);
7112 return 0;
7113 }