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74be272a673cd1edb1a17643f4acb377231441e6
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 const char *
313 mkdate(const time_t *time)
314 {
315 static char buf[DATE_COLS + 1];
316 struct tm tm;
318 gmtime_r(time, &tm);
319 return strftime(buf, sizeof(buf), DATE_FORMAT, &tm) ? buf : NULL;
320 }
323 static bool
324 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
325 {
326 int valuelen;
328 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
329 bool advance = cmd[valuelen] != 0;
331 cmd[valuelen] = 0;
332 argv[(*argc)++] = chomp_string(cmd);
333 cmd = chomp_string(cmd + valuelen + advance);
334 }
336 if (*argc < SIZEOF_ARG)
337 argv[*argc] = NULL;
338 return *argc < SIZEOF_ARG;
339 }
341 static void
342 argv_from_env(const char **argv, const char *name)
343 {
344 char *env = argv ? getenv(name) : NULL;
345 int argc = 0;
347 if (env && *env)
348 env = strdup(env);
349 if (env && !argv_from_string(argv, &argc, env))
350 die("Too many arguments in the `%s` environment variable", name);
351 }
354 /*
355 * Executing external commands.
356 */
358 enum io_type {
359 IO_FD, /* File descriptor based IO. */
360 IO_BG, /* Execute command in the background. */
361 IO_FG, /* Execute command with same std{in,out,err}. */
362 IO_RD, /* Read only fork+exec IO. */
363 IO_WR, /* Write only fork+exec IO. */
364 IO_AP, /* Append fork+exec output to file. */
365 };
367 struct io {
368 enum io_type type; /* The requested type of pipe. */
369 const char *dir; /* Directory from which to execute. */
370 pid_t pid; /* Pipe for reading or writing. */
371 int pipe; /* Pipe end for reading or writing. */
372 int error; /* Error status. */
373 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
374 char *buf; /* Read buffer. */
375 size_t bufalloc; /* Allocated buffer size. */
376 size_t bufsize; /* Buffer content size. */
377 char *bufpos; /* Current buffer position. */
378 unsigned int eof:1; /* Has end of file been reached. */
379 };
381 static void
382 reset_io(struct io *io)
383 {
384 io->pipe = -1;
385 io->pid = 0;
386 io->buf = io->bufpos = NULL;
387 io->bufalloc = io->bufsize = 0;
388 io->error = 0;
389 io->eof = 0;
390 }
392 static void
393 init_io(struct io *io, const char *dir, enum io_type type)
394 {
395 reset_io(io);
396 io->type = type;
397 io->dir = dir;
398 }
400 static bool
401 init_io_rd(struct io *io, const char *argv[], const char *dir,
402 enum format_flags flags)
403 {
404 init_io(io, dir, IO_RD);
405 return format_argv(io->argv, argv, flags);
406 }
408 static bool
409 io_open(struct io *io, const char *name)
410 {
411 init_io(io, NULL, IO_FD);
412 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
413 if (io->pipe == -1)
414 io->error = errno;
415 return io->pipe != -1;
416 }
418 static bool
419 kill_io(struct io *io)
420 {
421 return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
422 }
424 static bool
425 done_io(struct io *io)
426 {
427 pid_t pid = io->pid;
429 if (io->pipe != -1)
430 close(io->pipe);
431 free(io->buf);
432 reset_io(io);
434 while (pid > 0) {
435 int status;
436 pid_t waiting = waitpid(pid, &status, 0);
438 if (waiting < 0) {
439 if (errno == EINTR)
440 continue;
441 report("waitpid failed (%s)", strerror(errno));
442 return FALSE;
443 }
445 return waiting == pid &&
446 !WIFSIGNALED(status) &&
447 WIFEXITED(status) &&
448 !WEXITSTATUS(status);
449 }
451 return TRUE;
452 }
454 static bool
455 start_io(struct io *io)
456 {
457 int pipefds[2] = { -1, -1 };
459 if (io->type == IO_FD)
460 return TRUE;
462 if ((io->type == IO_RD || io->type == IO_WR) &&
463 pipe(pipefds) < 0)
464 return FALSE;
465 else if (io->type == IO_AP)
466 pipefds[1] = io->pipe;
468 if ((io->pid = fork())) {
469 if (pipefds[!(io->type == IO_WR)] != -1)
470 close(pipefds[!(io->type == IO_WR)]);
471 if (io->pid != -1) {
472 io->pipe = pipefds[!!(io->type == IO_WR)];
473 return TRUE;
474 }
476 } else {
477 if (io->type != IO_FG) {
478 int devnull = open("/dev/null", O_RDWR);
479 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
480 int writefd = (io->type == IO_RD || io->type == IO_AP)
481 ? pipefds[1] : devnull;
483 dup2(readfd, STDIN_FILENO);
484 dup2(writefd, STDOUT_FILENO);
485 dup2(devnull, STDERR_FILENO);
487 close(devnull);
488 if (pipefds[0] != -1)
489 close(pipefds[0]);
490 if (pipefds[1] != -1)
491 close(pipefds[1]);
492 }
494 if (io->dir && *io->dir && chdir(io->dir) == -1)
495 die("Failed to change directory: %s", strerror(errno));
497 execvp(io->argv[0], (char *const*) io->argv);
498 die("Failed to execute program: %s", strerror(errno));
499 }
501 if (pipefds[!!(io->type == IO_WR)] != -1)
502 close(pipefds[!!(io->type == IO_WR)]);
503 return FALSE;
504 }
506 static bool
507 run_io(struct io *io, const char **argv, const char *dir, enum io_type type)
508 {
509 init_io(io, dir, type);
510 if (!format_argv(io->argv, argv, FORMAT_NONE))
511 return FALSE;
512 return start_io(io);
513 }
515 static int
516 run_io_do(struct io *io)
517 {
518 return start_io(io) && done_io(io);
519 }
521 static int
522 run_io_bg(const char **argv)
523 {
524 struct io io = {};
526 init_io(&io, NULL, IO_BG);
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_fg(const char **argv, const char *dir)
534 {
535 struct io io = {};
537 init_io(&io, dir, IO_FG);
538 if (!format_argv(io.argv, argv, FORMAT_NONE))
539 return FALSE;
540 return run_io_do(&io);
541 }
543 static bool
544 run_io_append(const char **argv, enum format_flags flags, int fd)
545 {
546 struct io io = {};
548 init_io(&io, NULL, IO_AP);
549 io.pipe = fd;
550 if (format_argv(io.argv, argv, flags))
551 return run_io_do(&io);
552 close(fd);
553 return FALSE;
554 }
556 static bool
557 run_io_rd(struct io *io, const char **argv, enum format_flags flags)
558 {
559 return init_io_rd(io, argv, NULL, flags) && start_io(io);
560 }
562 static bool
563 io_eof(struct io *io)
564 {
565 return io->eof;
566 }
568 static int
569 io_error(struct io *io)
570 {
571 return io->error;
572 }
574 static char *
575 io_strerror(struct io *io)
576 {
577 return strerror(io->error);
578 }
580 static bool
581 io_can_read(struct io *io)
582 {
583 struct timeval tv = { 0, 500 };
584 fd_set fds;
586 FD_ZERO(&fds);
587 FD_SET(io->pipe, &fds);
589 return select(io->pipe + 1, &fds, NULL, NULL, &tv) > 0;
590 }
592 static ssize_t
593 io_read(struct io *io, void *buf, size_t bufsize)
594 {
595 do {
596 ssize_t readsize = read(io->pipe, buf, bufsize);
598 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
599 continue;
600 else if (readsize == -1)
601 io->error = errno;
602 else if (readsize == 0)
603 io->eof = 1;
604 return readsize;
605 } while (1);
606 }
608 static char *
609 io_get(struct io *io, int c, bool can_read)
610 {
611 char *eol;
612 ssize_t readsize;
614 if (!io->buf) {
615 io->buf = io->bufpos = malloc(BUFSIZ);
616 if (!io->buf)
617 return NULL;
618 io->bufalloc = BUFSIZ;
619 io->bufsize = 0;
620 }
622 while (TRUE) {
623 if (io->bufsize > 0) {
624 eol = memchr(io->bufpos, c, io->bufsize);
625 if (eol) {
626 char *line = io->bufpos;
628 *eol = 0;
629 io->bufpos = eol + 1;
630 io->bufsize -= io->bufpos - line;
631 return line;
632 }
633 }
635 if (io_eof(io)) {
636 if (io->bufsize) {
637 io->bufpos[io->bufsize] = 0;
638 io->bufsize = 0;
639 return io->bufpos;
640 }
641 return NULL;
642 }
644 if (!can_read)
645 return NULL;
647 if (io->bufsize > 0 && io->bufpos > io->buf)
648 memmove(io->buf, io->bufpos, io->bufsize);
650 io->bufpos = io->buf;
651 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
652 if (io_error(io))
653 return NULL;
654 io->bufsize += readsize;
655 }
656 }
658 static bool
659 io_write(struct io *io, const void *buf, size_t bufsize)
660 {
661 size_t written = 0;
663 while (!io_error(io) && written < bufsize) {
664 ssize_t size;
666 size = write(io->pipe, buf + written, bufsize - written);
667 if (size < 0 && (errno == EAGAIN || errno == EINTR))
668 continue;
669 else if (size == -1)
670 io->error = errno;
671 else
672 written += size;
673 }
675 return written == bufsize;
676 }
678 static bool
679 io_read_buf(struct io *io, char buf[], size_t bufsize)
680 {
681 bool error;
683 io->buf = io->bufpos = buf;
684 io->bufalloc = bufsize;
685 error = !io_get(io, '\n', TRUE) && io_error(io);
686 io->buf = NULL;
688 return done_io(io) || error;
689 }
691 static bool
692 run_io_buf(const char **argv, char buf[], size_t bufsize)
693 {
694 struct io io = {};
696 return run_io_rd(&io, argv, FORMAT_NONE) && io_read_buf(&io, buf, bufsize);
697 }
699 static int
700 io_load(struct io *io, const char *separators,
701 int (*read_property)(char *, size_t, char *, size_t))
702 {
703 char *name;
704 int state = OK;
706 if (!start_io(io))
707 return ERR;
709 while (state == OK && (name = io_get(io, '\n', TRUE))) {
710 char *value;
711 size_t namelen;
712 size_t valuelen;
714 name = chomp_string(name);
715 namelen = strcspn(name, separators);
717 if (name[namelen]) {
718 name[namelen] = 0;
719 value = chomp_string(name + namelen + 1);
720 valuelen = strlen(value);
722 } else {
723 value = "";
724 valuelen = 0;
725 }
727 state = read_property(name, namelen, value, valuelen);
728 }
730 if (state != ERR && io_error(io))
731 state = ERR;
732 done_io(io);
734 return state;
735 }
737 static int
738 run_io_load(const char **argv, const char *separators,
739 int (*read_property)(char *, size_t, char *, size_t))
740 {
741 struct io io = {};
743 return init_io_rd(&io, argv, NULL, FORMAT_NONE)
744 ? io_load(&io, separators, read_property) : ERR;
745 }
748 /*
749 * User requests
750 */
752 #define REQ_INFO \
753 /* XXX: Keep the view request first and in sync with views[]. */ \
754 REQ_GROUP("View switching") \
755 REQ_(VIEW_MAIN, "Show main view"), \
756 REQ_(VIEW_DIFF, "Show diff view"), \
757 REQ_(VIEW_LOG, "Show log view"), \
758 REQ_(VIEW_TREE, "Show tree view"), \
759 REQ_(VIEW_BLOB, "Show blob view"), \
760 REQ_(VIEW_BLAME, "Show blame view"), \
761 REQ_(VIEW_HELP, "Show help page"), \
762 REQ_(VIEW_PAGER, "Show pager view"), \
763 REQ_(VIEW_STATUS, "Show status view"), \
764 REQ_(VIEW_STAGE, "Show stage view"), \
765 \
766 REQ_GROUP("View manipulation") \
767 REQ_(ENTER, "Enter current line and scroll"), \
768 REQ_(NEXT, "Move to next"), \
769 REQ_(PREVIOUS, "Move to previous"), \
770 REQ_(PARENT, "Move to parent"), \
771 REQ_(VIEW_NEXT, "Move focus to next view"), \
772 REQ_(REFRESH, "Reload and refresh"), \
773 REQ_(MAXIMIZE, "Maximize the current view"), \
774 REQ_(VIEW_CLOSE, "Close the current view"), \
775 REQ_(QUIT, "Close all views and quit"), \
776 \
777 REQ_GROUP("View specific requests") \
778 REQ_(STATUS_UPDATE, "Update file status"), \
779 REQ_(STATUS_REVERT, "Revert file changes"), \
780 REQ_(STATUS_MERGE, "Merge file using external tool"), \
781 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
782 \
783 REQ_GROUP("Cursor navigation") \
784 REQ_(MOVE_UP, "Move cursor one line up"), \
785 REQ_(MOVE_DOWN, "Move cursor one line down"), \
786 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
787 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
788 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
789 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
790 \
791 REQ_GROUP("Scrolling") \
792 REQ_(SCROLL_LEFT, "Scroll two columns left"), \
793 REQ_(SCROLL_RIGHT, "Scroll two columns right"), \
794 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
795 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
796 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
797 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
798 \
799 REQ_GROUP("Searching") \
800 REQ_(SEARCH, "Search the view"), \
801 REQ_(SEARCH_BACK, "Search backwards in the view"), \
802 REQ_(FIND_NEXT, "Find next search match"), \
803 REQ_(FIND_PREV, "Find previous search match"), \
804 \
805 REQ_GROUP("Option manipulation") \
806 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
807 REQ_(TOGGLE_DATE, "Toggle date display"), \
808 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
809 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
810 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
811 \
812 REQ_GROUP("Misc") \
813 REQ_(PROMPT, "Bring up the prompt"), \
814 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
815 REQ_(SHOW_VERSION, "Show version information"), \
816 REQ_(STOP_LOADING, "Stop all loading views"), \
817 REQ_(EDIT, "Open in editor"), \
818 REQ_(NONE, "Do nothing")
821 /* User action requests. */
822 enum request {
823 #define REQ_GROUP(help)
824 #define REQ_(req, help) REQ_##req
826 /* Offset all requests to avoid conflicts with ncurses getch values. */
827 REQ_OFFSET = KEY_MAX + 1,
828 REQ_INFO
830 #undef REQ_GROUP
831 #undef REQ_
832 };
834 struct request_info {
835 enum request request;
836 const char *name;
837 int namelen;
838 const char *help;
839 };
841 static const struct request_info req_info[] = {
842 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
843 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
844 REQ_INFO
845 #undef REQ_GROUP
846 #undef REQ_
847 };
849 static enum request
850 get_request(const char *name)
851 {
852 int namelen = strlen(name);
853 int i;
855 for (i = 0; i < ARRAY_SIZE(req_info); i++)
856 if (req_info[i].namelen == namelen &&
857 !string_enum_compare(req_info[i].name, name, namelen))
858 return req_info[i].request;
860 return REQ_NONE;
861 }
864 /*
865 * Options
866 */
868 /* Option and state variables. */
869 static bool opt_date = TRUE;
870 static bool opt_author = TRUE;
871 static bool opt_line_number = FALSE;
872 static bool opt_line_graphics = TRUE;
873 static bool opt_rev_graph = FALSE;
874 static bool opt_show_refs = TRUE;
875 static int opt_num_interval = NUMBER_INTERVAL;
876 static double opt_hscroll = 0.50;
877 static int opt_tab_size = TAB_SIZE;
878 static int opt_author_cols = AUTHOR_COLS-1;
879 static char opt_path[SIZEOF_STR] = "";
880 static char opt_file[SIZEOF_STR] = "";
881 static char opt_ref[SIZEOF_REF] = "";
882 static char opt_head[SIZEOF_REF] = "";
883 static char opt_head_rev[SIZEOF_REV] = "";
884 static char opt_remote[SIZEOF_REF] = "";
885 static char opt_encoding[20] = "UTF-8";
886 static bool opt_utf8 = TRUE;
887 static char opt_codeset[20] = "UTF-8";
888 static iconv_t opt_iconv = ICONV_NONE;
889 static char opt_search[SIZEOF_STR] = "";
890 static char opt_cdup[SIZEOF_STR] = "";
891 static char opt_prefix[SIZEOF_STR] = "";
892 static char opt_git_dir[SIZEOF_STR] = "";
893 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
894 static char opt_editor[SIZEOF_STR] = "";
895 static FILE *opt_tty = NULL;
897 #define is_initial_commit() (!*opt_head_rev)
898 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || !strcmp(opt_head_rev, (rev)))
901 /*
902 * Line-oriented content detection.
903 */
905 #define LINE_INFO \
906 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
907 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
908 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
909 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
910 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
911 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
912 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
913 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
914 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
915 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
916 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
917 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
918 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
919 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
920 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
921 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
922 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
923 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
924 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
925 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
926 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
927 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
928 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
929 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
930 LINE(AUTHOR, "author ", COLOR_GREEN, COLOR_DEFAULT, 0), \
931 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
932 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
933 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
934 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
935 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
936 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
937 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
938 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
939 LINE(MODE, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
940 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
941 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
942 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
943 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
944 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
945 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
946 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
947 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
948 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
949 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
950 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
951 LINE(TREE_HEAD, "", COLOR_DEFAULT, COLOR_DEFAULT, A_BOLD), \
952 LINE(TREE_DIR, "", COLOR_YELLOW, COLOR_DEFAULT, A_NORMAL), \
953 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
954 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
955 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
956 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
957 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
958 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
959 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
960 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
962 enum line_type {
963 #define LINE(type, line, fg, bg, attr) \
964 LINE_##type
965 LINE_INFO,
966 LINE_NONE
967 #undef LINE
968 };
970 struct line_info {
971 const char *name; /* Option name. */
972 int namelen; /* Size of option name. */
973 const char *line; /* The start of line to match. */
974 int linelen; /* Size of string to match. */
975 int fg, bg, attr; /* Color and text attributes for the lines. */
976 };
978 static struct line_info line_info[] = {
979 #define LINE(type, line, fg, bg, attr) \
980 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
981 LINE_INFO
982 #undef LINE
983 };
985 static enum line_type
986 get_line_type(const char *line)
987 {
988 int linelen = strlen(line);
989 enum line_type type;
991 for (type = 0; type < ARRAY_SIZE(line_info); type++)
992 /* Case insensitive search matches Signed-off-by lines better. */
993 if (linelen >= line_info[type].linelen &&
994 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
995 return type;
997 return LINE_DEFAULT;
998 }
1000 static inline int
1001 get_line_attr(enum line_type type)
1002 {
1003 assert(type < ARRAY_SIZE(line_info));
1004 return COLOR_PAIR(type) | line_info[type].attr;
1005 }
1007 static struct line_info *
1008 get_line_info(const char *name)
1009 {
1010 size_t namelen = strlen(name);
1011 enum line_type type;
1013 for (type = 0; type < ARRAY_SIZE(line_info); type++)
1014 if (namelen == line_info[type].namelen &&
1015 !string_enum_compare(line_info[type].name, name, namelen))
1016 return &line_info[type];
1018 return NULL;
1019 }
1021 static void
1022 init_colors(void)
1023 {
1024 int default_bg = line_info[LINE_DEFAULT].bg;
1025 int default_fg = line_info[LINE_DEFAULT].fg;
1026 enum line_type type;
1028 start_color();
1030 if (assume_default_colors(default_fg, default_bg) == ERR) {
1031 default_bg = COLOR_BLACK;
1032 default_fg = COLOR_WHITE;
1033 }
1035 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
1036 struct line_info *info = &line_info[type];
1037 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
1038 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1040 init_pair(type, fg, bg);
1041 }
1042 }
1044 struct line {
1045 enum line_type type;
1047 /* State flags */
1048 unsigned int selected:1;
1049 unsigned int dirty:1;
1050 unsigned int cleareol:1;
1052 void *data; /* User data */
1053 };
1056 /*
1057 * Keys
1058 */
1060 struct keybinding {
1061 int alias;
1062 enum request request;
1063 };
1065 static const struct keybinding default_keybindings[] = {
1066 /* View switching */
1067 { 'm', REQ_VIEW_MAIN },
1068 { 'd', REQ_VIEW_DIFF },
1069 { 'l', REQ_VIEW_LOG },
1070 { 't', REQ_VIEW_TREE },
1071 { 'f', REQ_VIEW_BLOB },
1072 { 'B', REQ_VIEW_BLAME },
1073 { 'p', REQ_VIEW_PAGER },
1074 { 'h', REQ_VIEW_HELP },
1075 { 'S', REQ_VIEW_STATUS },
1076 { 'c', REQ_VIEW_STAGE },
1078 /* View manipulation */
1079 { 'q', REQ_VIEW_CLOSE },
1080 { KEY_TAB, REQ_VIEW_NEXT },
1081 { KEY_RETURN, REQ_ENTER },
1082 { KEY_UP, REQ_PREVIOUS },
1083 { KEY_DOWN, REQ_NEXT },
1084 { 'R', REQ_REFRESH },
1085 { KEY_F(5), REQ_REFRESH },
1086 { 'O', REQ_MAXIMIZE },
1088 /* Cursor navigation */
1089 { 'k', REQ_MOVE_UP },
1090 { 'j', REQ_MOVE_DOWN },
1091 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1092 { KEY_END, REQ_MOVE_LAST_LINE },
1093 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1094 { ' ', REQ_MOVE_PAGE_DOWN },
1095 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1096 { 'b', REQ_MOVE_PAGE_UP },
1097 { '-', REQ_MOVE_PAGE_UP },
1099 /* Scrolling */
1100 { KEY_LEFT, REQ_SCROLL_LEFT },
1101 { KEY_RIGHT, REQ_SCROLL_RIGHT },
1102 { KEY_IC, REQ_SCROLL_LINE_UP },
1103 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1104 { 'w', REQ_SCROLL_PAGE_UP },
1105 { 's', REQ_SCROLL_PAGE_DOWN },
1107 /* Searching */
1108 { '/', REQ_SEARCH },
1109 { '?', REQ_SEARCH_BACK },
1110 { 'n', REQ_FIND_NEXT },
1111 { 'N', REQ_FIND_PREV },
1113 /* Misc */
1114 { 'Q', REQ_QUIT },
1115 { 'z', REQ_STOP_LOADING },
1116 { 'v', REQ_SHOW_VERSION },
1117 { 'r', REQ_SCREEN_REDRAW },
1118 { '.', REQ_TOGGLE_LINENO },
1119 { 'D', REQ_TOGGLE_DATE },
1120 { 'A', REQ_TOGGLE_AUTHOR },
1121 { 'g', REQ_TOGGLE_REV_GRAPH },
1122 { 'F', REQ_TOGGLE_REFS },
1123 { ':', REQ_PROMPT },
1124 { 'u', REQ_STATUS_UPDATE },
1125 { '!', REQ_STATUS_REVERT },
1126 { 'M', REQ_STATUS_MERGE },
1127 { '@', REQ_STAGE_NEXT },
1128 { ',', REQ_PARENT },
1129 { 'e', REQ_EDIT },
1130 };
1132 #define KEYMAP_INFO \
1133 KEYMAP_(GENERIC), \
1134 KEYMAP_(MAIN), \
1135 KEYMAP_(DIFF), \
1136 KEYMAP_(LOG), \
1137 KEYMAP_(TREE), \
1138 KEYMAP_(BLOB), \
1139 KEYMAP_(BLAME), \
1140 KEYMAP_(PAGER), \
1141 KEYMAP_(HELP), \
1142 KEYMAP_(STATUS), \
1143 KEYMAP_(STAGE)
1145 enum keymap {
1146 #define KEYMAP_(name) KEYMAP_##name
1147 KEYMAP_INFO
1148 #undef KEYMAP_
1149 };
1151 static const struct enum_map keymap_table[] = {
1152 #define KEYMAP_(name) ENUM_MAP(#name, KEYMAP_##name)
1153 KEYMAP_INFO
1154 #undef KEYMAP_
1155 };
1157 #define set_keymap(map, name) map_enum(map, keymap_table, name)
1159 struct keybinding_table {
1160 struct keybinding *data;
1161 size_t size;
1162 };
1164 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1166 static void
1167 add_keybinding(enum keymap keymap, enum request request, int key)
1168 {
1169 struct keybinding_table *table = &keybindings[keymap];
1171 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1172 if (!table->data)
1173 die("Failed to allocate keybinding");
1174 table->data[table->size].alias = key;
1175 table->data[table->size++].request = request;
1176 }
1178 /* Looks for a key binding first in the given map, then in the generic map, and
1179 * lastly in the default keybindings. */
1180 static enum request
1181 get_keybinding(enum keymap keymap, int key)
1182 {
1183 size_t i;
1185 for (i = 0; i < keybindings[keymap].size; i++)
1186 if (keybindings[keymap].data[i].alias == key)
1187 return keybindings[keymap].data[i].request;
1189 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1190 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1191 return keybindings[KEYMAP_GENERIC].data[i].request;
1193 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1194 if (default_keybindings[i].alias == key)
1195 return default_keybindings[i].request;
1197 return (enum request) key;
1198 }
1201 struct key {
1202 const char *name;
1203 int value;
1204 };
1206 static const struct key key_table[] = {
1207 { "Enter", KEY_RETURN },
1208 { "Space", ' ' },
1209 { "Backspace", KEY_BACKSPACE },
1210 { "Tab", KEY_TAB },
1211 { "Escape", KEY_ESC },
1212 { "Left", KEY_LEFT },
1213 { "Right", KEY_RIGHT },
1214 { "Up", KEY_UP },
1215 { "Down", KEY_DOWN },
1216 { "Insert", KEY_IC },
1217 { "Delete", KEY_DC },
1218 { "Hash", '#' },
1219 { "Home", KEY_HOME },
1220 { "End", KEY_END },
1221 { "PageUp", KEY_PPAGE },
1222 { "PageDown", KEY_NPAGE },
1223 { "F1", KEY_F(1) },
1224 { "F2", KEY_F(2) },
1225 { "F3", KEY_F(3) },
1226 { "F4", KEY_F(4) },
1227 { "F5", KEY_F(5) },
1228 { "F6", KEY_F(6) },
1229 { "F7", KEY_F(7) },
1230 { "F8", KEY_F(8) },
1231 { "F9", KEY_F(9) },
1232 { "F10", KEY_F(10) },
1233 { "F11", KEY_F(11) },
1234 { "F12", KEY_F(12) },
1235 };
1237 static int
1238 get_key_value(const char *name)
1239 {
1240 int i;
1242 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1243 if (!strcasecmp(key_table[i].name, name))
1244 return key_table[i].value;
1246 if (strlen(name) == 1 && isprint(*name))
1247 return (int) *name;
1249 return ERR;
1250 }
1252 static const char *
1253 get_key_name(int key_value)
1254 {
1255 static char key_char[] = "'X'";
1256 const char *seq = NULL;
1257 int key;
1259 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1260 if (key_table[key].value == key_value)
1261 seq = key_table[key].name;
1263 if (seq == NULL &&
1264 key_value < 127 &&
1265 isprint(key_value)) {
1266 key_char[1] = (char) key_value;
1267 seq = key_char;
1268 }
1270 return seq ? seq : "(no key)";
1271 }
1273 static const char *
1274 get_key(enum request request)
1275 {
1276 static char buf[BUFSIZ];
1277 size_t pos = 0;
1278 char *sep = "";
1279 int i;
1281 buf[pos] = 0;
1283 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1284 const struct keybinding *keybinding = &default_keybindings[i];
1286 if (keybinding->request != request)
1287 continue;
1289 if (!string_format_from(buf, &pos, "%s%s", sep,
1290 get_key_name(keybinding->alias)))
1291 return "Too many keybindings!";
1292 sep = ", ";
1293 }
1295 return buf;
1296 }
1298 struct run_request {
1299 enum keymap keymap;
1300 int key;
1301 const char *argv[SIZEOF_ARG];
1302 };
1304 static struct run_request *run_request;
1305 static size_t run_requests;
1307 static enum request
1308 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1309 {
1310 struct run_request *req;
1312 if (argc >= ARRAY_SIZE(req->argv) - 1)
1313 return REQ_NONE;
1315 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
1316 if (!req)
1317 return REQ_NONE;
1319 run_request = req;
1320 req = &run_request[run_requests];
1321 req->keymap = keymap;
1322 req->key = key;
1323 req->argv[0] = NULL;
1325 if (!format_argv(req->argv, argv, FORMAT_NONE))
1326 return REQ_NONE;
1328 return REQ_NONE + ++run_requests;
1329 }
1331 static struct run_request *
1332 get_run_request(enum request request)
1333 {
1334 if (request <= REQ_NONE)
1335 return NULL;
1336 return &run_request[request - REQ_NONE - 1];
1337 }
1339 static void
1340 add_builtin_run_requests(void)
1341 {
1342 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1343 const char *gc[] = { "git", "gc", NULL };
1344 struct {
1345 enum keymap keymap;
1346 int key;
1347 int argc;
1348 const char **argv;
1349 } reqs[] = {
1350 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1351 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1352 };
1353 int i;
1355 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1356 enum request req;
1358 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1359 if (req != REQ_NONE)
1360 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1361 }
1362 }
1364 /*
1365 * User config file handling.
1366 */
1368 static int config_lineno;
1369 static bool config_errors;
1370 static const char *config_msg;
1372 static const struct enum_map color_map[] = {
1373 #define COLOR_MAP(name) ENUM_MAP(#name, COLOR_##name)
1374 COLOR_MAP(DEFAULT),
1375 COLOR_MAP(BLACK),
1376 COLOR_MAP(BLUE),
1377 COLOR_MAP(CYAN),
1378 COLOR_MAP(GREEN),
1379 COLOR_MAP(MAGENTA),
1380 COLOR_MAP(RED),
1381 COLOR_MAP(WHITE),
1382 COLOR_MAP(YELLOW),
1383 };
1385 static const struct enum_map attr_map[] = {
1386 #define ATTR_MAP(name) ENUM_MAP(#name, A_##name)
1387 ATTR_MAP(NORMAL),
1388 ATTR_MAP(BLINK),
1389 ATTR_MAP(BOLD),
1390 ATTR_MAP(DIM),
1391 ATTR_MAP(REVERSE),
1392 ATTR_MAP(STANDOUT),
1393 ATTR_MAP(UNDERLINE),
1394 };
1396 #define set_attribute(attr, name) map_enum(attr, attr_map, name)
1398 static int parse_step(double *opt, const char *arg)
1399 {
1400 *opt = atoi(arg);
1401 if (!strchr(arg, '%'))
1402 return OK;
1404 /* "Shift down" so 100% and 1 does not conflict. */
1405 *opt = (*opt - 1) / 100;
1406 if (*opt >= 1.0) {
1407 *opt = 0.99;
1408 config_msg = "Step value larger than 100%";
1409 return ERR;
1410 }
1411 if (*opt < 0.0) {
1412 *opt = 1;
1413 config_msg = "Invalid step value";
1414 return ERR;
1415 }
1416 return OK;
1417 }
1419 static int
1420 parse_int(int *opt, const char *arg, int min, int max)
1421 {
1422 int value = atoi(arg);
1424 if (min <= value && value <= max) {
1425 *opt = value;
1426 return OK;
1427 }
1429 config_msg = "Integer value out of bound";
1430 return ERR;
1431 }
1433 static bool
1434 set_color(int *color, const char *name)
1435 {
1436 if (map_enum(color, color_map, name))
1437 return TRUE;
1438 if (!prefixcmp(name, "color"))
1439 return parse_int(color, name + 5, 0, 255) == OK;
1440 return FALSE;
1441 }
1443 /* Wants: object fgcolor bgcolor [attribute] */
1444 static int
1445 option_color_command(int argc, const char *argv[])
1446 {
1447 struct line_info *info;
1449 if (argc != 3 && argc != 4) {
1450 config_msg = "Wrong number of arguments given to color command";
1451 return ERR;
1452 }
1454 info = get_line_info(argv[0]);
1455 if (!info) {
1456 static const struct enum_map obsolete[] = {
1457 ENUM_MAP("main-delim", LINE_DELIMITER),
1458 ENUM_MAP("main-date", LINE_DATE),
1459 ENUM_MAP("main-author", LINE_AUTHOR),
1460 };
1461 int index;
1463 if (!map_enum(&index, obsolete, argv[0])) {
1464 config_msg = "Unknown color name";
1465 return ERR;
1466 }
1467 info = &line_info[index];
1468 }
1470 if (!set_color(&info->fg, argv[1]) ||
1471 !set_color(&info->bg, argv[2])) {
1472 config_msg = "Unknown color";
1473 return ERR;
1474 }
1476 if (argc == 4 && !set_attribute(&info->attr, argv[3])) {
1477 config_msg = "Unknown attribute";
1478 return ERR;
1479 }
1481 return OK;
1482 }
1484 static int parse_bool(bool *opt, const char *arg)
1485 {
1486 *opt = (!strcmp(arg, "1") || !strcmp(arg, "true") || !strcmp(arg, "yes"))
1487 ? TRUE : FALSE;
1488 return OK;
1489 }
1491 static int
1492 parse_string(char *opt, const char *arg, size_t optsize)
1493 {
1494 int arglen = strlen(arg);
1496 switch (arg[0]) {
1497 case '\"':
1498 case '\'':
1499 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1500 config_msg = "Unmatched quotation";
1501 return ERR;
1502 }
1503 arg += 1; arglen -= 2;
1504 default:
1505 string_ncopy_do(opt, optsize, arg, arglen);
1506 return OK;
1507 }
1508 }
1510 /* Wants: name = value */
1511 static int
1512 option_set_command(int argc, const char *argv[])
1513 {
1514 if (argc != 3) {
1515 config_msg = "Wrong number of arguments given to set command";
1516 return ERR;
1517 }
1519 if (strcmp(argv[1], "=")) {
1520 config_msg = "No value assigned";
1521 return ERR;
1522 }
1524 if (!strcmp(argv[0], "show-author"))
1525 return parse_bool(&opt_author, argv[2]);
1527 if (!strcmp(argv[0], "show-date"))
1528 return parse_bool(&opt_date, argv[2]);
1530 if (!strcmp(argv[0], "show-rev-graph"))
1531 return parse_bool(&opt_rev_graph, argv[2]);
1533 if (!strcmp(argv[0], "show-refs"))
1534 return parse_bool(&opt_show_refs, argv[2]);
1536 if (!strcmp(argv[0], "show-line-numbers"))
1537 return parse_bool(&opt_line_number, argv[2]);
1539 if (!strcmp(argv[0], "line-graphics"))
1540 return parse_bool(&opt_line_graphics, argv[2]);
1542 if (!strcmp(argv[0], "line-number-interval"))
1543 return parse_int(&opt_num_interval, argv[2], 1, 1024);
1545 if (!strcmp(argv[0], "author-width"))
1546 return parse_int(&opt_author_cols, argv[2], 0, 1024);
1548 if (!strcmp(argv[0], "horizontal-scroll"))
1549 return parse_step(&opt_hscroll, argv[2]);
1551 if (!strcmp(argv[0], "tab-size"))
1552 return parse_int(&opt_tab_size, argv[2], 1, 1024);
1554 if (!strcmp(argv[0], "commit-encoding"))
1555 return parse_string(opt_encoding, argv[2], sizeof(opt_encoding));
1557 config_msg = "Unknown variable name";
1558 return ERR;
1559 }
1561 /* Wants: mode request key */
1562 static int
1563 option_bind_command(int argc, const char *argv[])
1564 {
1565 enum request request;
1566 int keymap;
1567 int key;
1569 if (argc < 3) {
1570 config_msg = "Wrong number of arguments given to bind command";
1571 return ERR;
1572 }
1574 if (set_keymap(&keymap, argv[0]) == ERR) {
1575 config_msg = "Unknown key map";
1576 return ERR;
1577 }
1579 key = get_key_value(argv[1]);
1580 if (key == ERR) {
1581 config_msg = "Unknown key";
1582 return ERR;
1583 }
1585 request = get_request(argv[2]);
1586 if (request == REQ_NONE) {
1587 static const struct enum_map obsolete[] = {
1588 ENUM_MAP("cherry-pick", REQ_NONE),
1589 ENUM_MAP("screen-resize", REQ_NONE),
1590 ENUM_MAP("tree-parent", REQ_PARENT),
1591 };
1592 int alias;
1594 if (map_enum(&alias, obsolete, argv[2])) {
1595 if (alias != REQ_NONE)
1596 add_keybinding(keymap, alias, key);
1597 config_msg = "Obsolete request name";
1598 return ERR;
1599 }
1600 }
1601 if (request == REQ_NONE && *argv[2]++ == '!')
1602 request = add_run_request(keymap, key, argc - 2, argv + 2);
1603 if (request == REQ_NONE) {
1604 config_msg = "Unknown request name";
1605 return ERR;
1606 }
1608 add_keybinding(keymap, request, key);
1610 return OK;
1611 }
1613 static int
1614 set_option(const char *opt, char *value)
1615 {
1616 const char *argv[SIZEOF_ARG];
1617 int argc = 0;
1619 if (!argv_from_string(argv, &argc, value)) {
1620 config_msg = "Too many option arguments";
1621 return ERR;
1622 }
1624 if (!strcmp(opt, "color"))
1625 return option_color_command(argc, argv);
1627 if (!strcmp(opt, "set"))
1628 return option_set_command(argc, argv);
1630 if (!strcmp(opt, "bind"))
1631 return option_bind_command(argc, argv);
1633 config_msg = "Unknown option command";
1634 return ERR;
1635 }
1637 static int
1638 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1639 {
1640 int status = OK;
1642 config_lineno++;
1643 config_msg = "Internal error";
1645 /* Check for comment markers, since read_properties() will
1646 * only ensure opt and value are split at first " \t". */
1647 optlen = strcspn(opt, "#");
1648 if (optlen == 0)
1649 return OK;
1651 if (opt[optlen] != 0) {
1652 config_msg = "No option value";
1653 status = ERR;
1655 } else {
1656 /* Look for comment endings in the value. */
1657 size_t len = strcspn(value, "#");
1659 if (len < valuelen) {
1660 valuelen = len;
1661 value[valuelen] = 0;
1662 }
1664 status = set_option(opt, value);
1665 }
1667 if (status == ERR) {
1668 warn("Error on line %d, near '%.*s': %s",
1669 config_lineno, (int) optlen, opt, config_msg);
1670 config_errors = TRUE;
1671 }
1673 /* Always keep going if errors are encountered. */
1674 return OK;
1675 }
1677 static void
1678 load_option_file(const char *path)
1679 {
1680 struct io io = {};
1682 /* It's OK that the file doesn't exist. */
1683 if (!io_open(&io, path))
1684 return;
1686 config_lineno = 0;
1687 config_errors = FALSE;
1689 if (io_load(&io, " \t", read_option) == ERR ||
1690 config_errors == TRUE)
1691 warn("Errors while loading %s.", path);
1692 }
1694 static int
1695 load_options(void)
1696 {
1697 const char *home = getenv("HOME");
1698 const char *tigrc_user = getenv("TIGRC_USER");
1699 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1700 char buf[SIZEOF_STR];
1702 add_builtin_run_requests();
1704 if (!tigrc_system)
1705 tigrc_system = SYSCONFDIR "/tigrc";
1706 load_option_file(tigrc_system);
1708 if (!tigrc_user) {
1709 if (!home || !string_format(buf, "%s/.tigrc", home))
1710 return ERR;
1711 tigrc_user = buf;
1712 }
1713 load_option_file(tigrc_user);
1715 return OK;
1716 }
1719 /*
1720 * The viewer
1721 */
1723 struct view;
1724 struct view_ops;
1726 /* The display array of active views and the index of the current view. */
1727 static struct view *display[2];
1728 static unsigned int current_view;
1730 #define foreach_displayed_view(view, i) \
1731 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1733 #define displayed_views() (display[1] != NULL ? 2 : 1)
1735 /* Current head and commit ID */
1736 static char ref_blob[SIZEOF_REF] = "";
1737 static char ref_commit[SIZEOF_REF] = "HEAD";
1738 static char ref_head[SIZEOF_REF] = "HEAD";
1740 struct view {
1741 const char *name; /* View name */
1742 const char *cmd_env; /* Command line set via environment */
1743 const char *id; /* Points to either of ref_{head,commit,blob} */
1745 struct view_ops *ops; /* View operations */
1747 enum keymap keymap; /* What keymap does this view have */
1748 bool git_dir; /* Whether the view requires a git directory. */
1750 char ref[SIZEOF_REF]; /* Hovered commit reference */
1751 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1753 int height, width; /* The width and height of the main window */
1754 WINDOW *win; /* The main window */
1755 WINDOW *title; /* The title window living below the main window */
1757 /* Navigation */
1758 unsigned long offset; /* Offset of the window top */
1759 unsigned long yoffset; /* Offset from the window side. */
1760 unsigned long lineno; /* Current line number */
1761 unsigned long p_offset; /* Previous offset of the window top */
1762 unsigned long p_yoffset;/* Previous offset from the window side */
1763 unsigned long p_lineno; /* Previous current line number */
1764 bool p_restore; /* Should the previous position be restored. */
1766 /* Searching */
1767 char grep[SIZEOF_STR]; /* Search string */
1768 regex_t *regex; /* Pre-compiled regexp */
1770 /* If non-NULL, points to the view that opened this view. If this view
1771 * is closed tig will switch back to the parent view. */
1772 struct view *parent;
1774 /* Buffering */
1775 size_t lines; /* Total number of lines */
1776 struct line *line; /* Line index */
1777 size_t line_alloc; /* Total number of allocated lines */
1778 unsigned int digits; /* Number of digits in the lines member. */
1780 /* Drawing */
1781 struct line *curline; /* Line currently being drawn. */
1782 enum line_type curtype; /* Attribute currently used for drawing. */
1783 unsigned long col; /* Column when drawing. */
1784 bool has_scrolled; /* View was scrolled. */
1786 /* Loading */
1787 struct io io;
1788 struct io *pipe;
1789 time_t start_time;
1790 time_t update_secs;
1791 };
1793 struct view_ops {
1794 /* What type of content being displayed. Used in the title bar. */
1795 const char *type;
1796 /* Default command arguments. */
1797 const char **argv;
1798 /* Open and reads in all view content. */
1799 bool (*open)(struct view *view);
1800 /* Read one line; updates view->line. */
1801 bool (*read)(struct view *view, char *data);
1802 /* Draw one line; @lineno must be < view->height. */
1803 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1804 /* Depending on view handle a special requests. */
1805 enum request (*request)(struct view *view, enum request request, struct line *line);
1806 /* Search for regexp in a line. */
1807 bool (*grep)(struct view *view, struct line *line);
1808 /* Select line */
1809 void (*select)(struct view *view, struct line *line);
1810 };
1812 static struct view_ops blame_ops;
1813 static struct view_ops blob_ops;
1814 static struct view_ops diff_ops;
1815 static struct view_ops help_ops;
1816 static struct view_ops log_ops;
1817 static struct view_ops main_ops;
1818 static struct view_ops pager_ops;
1819 static struct view_ops stage_ops;
1820 static struct view_ops status_ops;
1821 static struct view_ops tree_ops;
1823 #define VIEW_STR(name, env, ref, ops, map, git) \
1824 { name, #env, ref, ops, map, git }
1826 #define VIEW_(id, name, ops, git, ref) \
1827 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1830 static struct view views[] = {
1831 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1832 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1833 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1834 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1835 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1836 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1837 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1838 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1839 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1840 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1841 };
1843 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1844 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1846 #define foreach_view(view, i) \
1847 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1849 #define view_is_displayed(view) \
1850 (view == display[0] || view == display[1])
1853 enum line_graphic {
1854 LINE_GRAPHIC_VLINE
1855 };
1857 static chtype line_graphics[] = {
1858 /* LINE_GRAPHIC_VLINE: */ '|'
1859 };
1861 static inline void
1862 set_view_attr(struct view *view, enum line_type type)
1863 {
1864 if (!view->curline->selected && view->curtype != type) {
1865 wattrset(view->win, get_line_attr(type));
1866 wchgat(view->win, -1, 0, type, NULL);
1867 view->curtype = type;
1868 }
1869 }
1871 static int
1872 draw_chars(struct view *view, enum line_type type, const char *string,
1873 int max_len, bool use_tilde)
1874 {
1875 int len = 0;
1876 int col = 0;
1877 int trimmed = FALSE;
1878 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1880 if (max_len <= 0)
1881 return 0;
1883 if (opt_utf8) {
1884 len = utf8_length(&string, skip, &col, max_len, &trimmed, use_tilde);
1885 } else {
1886 col = len = strlen(string);
1887 if (len > max_len) {
1888 if (use_tilde) {
1889 max_len -= 1;
1890 }
1891 col = len = max_len;
1892 trimmed = TRUE;
1893 }
1894 }
1896 set_view_attr(view, type);
1897 if (len > 0)
1898 waddnstr(view->win, string, len);
1899 if (trimmed && use_tilde) {
1900 set_view_attr(view, LINE_DELIMITER);
1901 waddch(view->win, '~');
1902 col++;
1903 }
1905 return col;
1906 }
1908 static int
1909 draw_space(struct view *view, enum line_type type, int max, int spaces)
1910 {
1911 static char space[] = " ";
1912 int col = 0;
1914 spaces = MIN(max, spaces);
1916 while (spaces > 0) {
1917 int len = MIN(spaces, sizeof(space) - 1);
1919 col += draw_chars(view, type, space, len, FALSE);
1920 spaces -= len;
1921 }
1923 return col;
1924 }
1926 static bool
1927 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1928 {
1929 view->col += draw_chars(view, type, string, view->width + view->yoffset - view->col, trim);
1930 return view->width + view->yoffset <= view->col;
1931 }
1933 static bool
1934 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1935 {
1936 size_t skip = view->yoffset > view->col ? view->yoffset - view->col : 0;
1937 int max = view->width + view->yoffset - view->col;
1938 int i;
1940 if (max < size)
1941 size = max;
1943 set_view_attr(view, type);
1944 /* Using waddch() instead of waddnstr() ensures that
1945 * they'll be rendered correctly for the cursor line. */
1946 for (i = skip; i < size; i++)
1947 waddch(view->win, graphic[i]);
1949 view->col += size;
1950 if (size < max && skip <= size)
1951 waddch(view->win, ' ');
1952 view->col++;
1954 return view->width + view->yoffset <= view->col;
1955 }
1957 static bool
1958 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1959 {
1960 int max = MIN(view->width + view->yoffset - view->col, len);
1961 int col;
1963 if (text)
1964 col = draw_chars(view, type, text, max - 1, trim);
1965 else
1966 col = draw_space(view, type, max - 1, max - 1);
1968 view->col += col;
1969 view->col += draw_space(view, LINE_DEFAULT, max - col, max - col);
1970 return view->width + view->yoffset <= view->col;
1971 }
1973 static bool
1974 draw_date(struct view *view, time_t *time)
1975 {
1976 const char *date = mkdate(time);
1978 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1979 }
1981 static bool
1982 draw_author(struct view *view, const char *author)
1983 {
1984 bool trim = opt_author_cols == 0 || opt_author_cols > 5 || !author;
1986 if (!trim) {
1987 static char initials[10];
1988 size_t pos;
1990 #define is_initial_sep(c) (isspace(c) || ispunct(c) || (c) == '@')
1992 memset(initials, 0, sizeof(initials));
1993 for (pos = 0; *author && pos < opt_author_cols - 1; author++, pos++) {
1994 while (is_initial_sep(*author))
1995 author++;
1996 strncpy(&initials[pos], author, sizeof(initials) - 1 - pos);
1997 while (*author && !is_initial_sep(author[1]))
1998 author++;
1999 }
2001 author = initials;
2002 }
2004 return draw_field(view, LINE_AUTHOR, author, opt_author_cols, trim);
2005 }
2007 static bool
2008 draw_mode(struct view *view, mode_t mode)
2009 {
2010 const char *str;
2012 if (S_ISDIR(mode))
2013 str = "drwxr-xr-x";
2014 else if (S_ISLNK(mode))
2015 str = "lrwxrwxrwx";
2016 else if (S_ISGITLINK(mode))
2017 str = "m---------";
2018 else if (S_ISREG(mode) && mode & S_IXUSR)
2019 str = "-rwxr-xr-x";
2020 else if (S_ISREG(mode))
2021 str = "-rw-r--r--";
2022 else
2023 str = "----------";
2025 return draw_field(view, LINE_MODE, str, STRING_SIZE("-rw-r--r-- "), FALSE);
2026 }
2028 static bool
2029 draw_lineno(struct view *view, unsigned int lineno)
2030 {
2031 char number[10];
2032 int digits3 = view->digits < 3 ? 3 : view->digits;
2033 int max = MIN(view->width + view->yoffset - view->col, digits3);
2034 char *text = NULL;
2036 lineno += view->offset + 1;
2037 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
2038 static char fmt[] = "%1ld";
2040 fmt[1] = '0' + (view->digits <= 9 ? digits3 : 1);
2041 if (string_format(number, fmt, lineno))
2042 text = number;
2043 }
2044 if (text)
2045 view->col += draw_chars(view, LINE_LINE_NUMBER, text, max, TRUE);
2046 else
2047 view->col += draw_space(view, LINE_LINE_NUMBER, max, digits3);
2048 return draw_graphic(view, LINE_DEFAULT, &line_graphics[LINE_GRAPHIC_VLINE], 1);
2049 }
2051 static bool
2052 draw_view_line(struct view *view, unsigned int lineno)
2053 {
2054 struct line *line;
2055 bool selected = (view->offset + lineno == view->lineno);
2057 assert(view_is_displayed(view));
2059 if (view->offset + lineno >= view->lines)
2060 return FALSE;
2062 line = &view->line[view->offset + lineno];
2064 wmove(view->win, lineno, 0);
2065 if (line->cleareol)
2066 wclrtoeol(view->win);
2067 view->col = 0;
2068 view->curline = line;
2069 view->curtype = LINE_NONE;
2070 line->selected = FALSE;
2071 line->dirty = line->cleareol = 0;
2073 if (selected) {
2074 set_view_attr(view, LINE_CURSOR);
2075 line->selected = TRUE;
2076 view->ops->select(view, line);
2077 }
2079 return view->ops->draw(view, line, lineno);
2080 }
2082 static void
2083 redraw_view_dirty(struct view *view)
2084 {
2085 bool dirty = FALSE;
2086 int lineno;
2088 for (lineno = 0; lineno < view->height; lineno++) {
2089 if (view->offset + lineno >= view->lines)
2090 break;
2091 if (!view->line[view->offset + lineno].dirty)
2092 continue;
2093 dirty = TRUE;
2094 if (!draw_view_line(view, lineno))
2095 break;
2096 }
2098 if (!dirty)
2099 return;
2100 wnoutrefresh(view->win);
2101 }
2103 static void
2104 redraw_view_from(struct view *view, int lineno)
2105 {
2106 assert(0 <= lineno && lineno < view->height);
2108 for (; lineno < view->height; lineno++) {
2109 if (!draw_view_line(view, lineno))
2110 break;
2111 }
2113 wnoutrefresh(view->win);
2114 }
2116 static void
2117 redraw_view(struct view *view)
2118 {
2119 werase(view->win);
2120 redraw_view_from(view, 0);
2121 }
2124 static void
2125 update_view_title(struct view *view)
2126 {
2127 char buf[SIZEOF_STR];
2128 char state[SIZEOF_STR];
2129 size_t bufpos = 0, statelen = 0;
2131 assert(view_is_displayed(view));
2133 if (view != VIEW(REQ_VIEW_STATUS) && view->lines) {
2134 unsigned int view_lines = view->offset + view->height;
2135 unsigned int lines = view->lines
2136 ? MIN(view_lines, view->lines) * 100 / view->lines
2137 : 0;
2139 string_format_from(state, &statelen, " - %s %d of %d (%d%%)",
2140 view->ops->type,
2141 view->lineno + 1,
2142 view->lines,
2143 lines);
2145 }
2147 if (view->pipe) {
2148 time_t secs = time(NULL) - view->start_time;
2150 /* Three git seconds are a long time ... */
2151 if (secs > 2)
2152 string_format_from(state, &statelen, " loading %lds", secs);
2153 }
2155 string_format_from(buf, &bufpos, "[%s]", view->name);
2156 if (*view->ref && bufpos < view->width) {
2157 size_t refsize = strlen(view->ref);
2158 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2160 if (minsize < view->width)
2161 refsize = view->width - minsize + 7;
2162 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2163 }
2165 if (statelen && bufpos < view->width) {
2166 string_format_from(buf, &bufpos, "%s", state);
2167 }
2169 if (view == display[current_view])
2170 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2171 else
2172 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2174 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2175 wclrtoeol(view->title);
2176 wnoutrefresh(view->title);
2177 }
2179 static void
2180 resize_display(void)
2181 {
2182 int offset, i;
2183 struct view *base = display[0];
2184 struct view *view = display[1] ? display[1] : display[0];
2186 /* Setup window dimensions */
2188 getmaxyx(stdscr, base->height, base->width);
2190 /* Make room for the status window. */
2191 base->height -= 1;
2193 if (view != base) {
2194 /* Horizontal split. */
2195 view->width = base->width;
2196 view->height = SCALE_SPLIT_VIEW(base->height);
2197 base->height -= view->height;
2199 /* Make room for the title bar. */
2200 view->height -= 1;
2201 }
2203 /* Make room for the title bar. */
2204 base->height -= 1;
2206 offset = 0;
2208 foreach_displayed_view (view, i) {
2209 if (!view->win) {
2210 view->win = newwin(view->height, 0, offset, 0);
2211 if (!view->win)
2212 die("Failed to create %s view", view->name);
2214 scrollok(view->win, FALSE);
2216 view->title = newwin(1, 0, offset + view->height, 0);
2217 if (!view->title)
2218 die("Failed to create title window");
2220 } else {
2221 wresize(view->win, view->height, view->width);
2222 mvwin(view->win, offset, 0);
2223 mvwin(view->title, offset + view->height, 0);
2224 }
2226 offset += view->height + 1;
2227 }
2228 }
2230 static void
2231 redraw_display(bool clear)
2232 {
2233 struct view *view;
2234 int i;
2236 foreach_displayed_view (view, i) {
2237 if (clear)
2238 wclear(view->win);
2239 redraw_view(view);
2240 update_view_title(view);
2241 }
2242 }
2244 static void
2245 toggle_view_option(bool *option, const char *help)
2246 {
2247 *option = !*option;
2248 redraw_display(FALSE);
2249 report("%sabling %s", *option ? "En" : "Dis", help);
2250 }
2252 static void
2253 maximize_view(struct view *view)
2254 {
2255 memset(display, 0, sizeof(display));
2256 current_view = 0;
2257 display[current_view] = view;
2258 resize_display();
2259 redraw_display(FALSE);
2260 report("");
2261 }
2264 /*
2265 * Navigation
2266 */
2268 static bool
2269 goto_view_line(struct view *view, unsigned long offset, unsigned long lineno)
2270 {
2271 if (lineno >= view->lines)
2272 lineno = view->lines > 0 ? view->lines - 1 : 0;
2274 if (offset > lineno || offset + view->height <= lineno) {
2275 unsigned long half = view->height / 2;
2277 if (lineno > half)
2278 offset = lineno - half;
2279 else
2280 offset = 0;
2281 }
2283 if (offset != view->offset || lineno != view->lineno) {
2284 view->offset = offset;
2285 view->lineno = lineno;
2286 return TRUE;
2287 }
2289 return FALSE;
2290 }
2292 static int
2293 apply_step(double step, int value)
2294 {
2295 if (step >= 1)
2296 return (int) step;
2297 value *= step + 0.01;
2298 return value ? value : 1;
2299 }
2301 /* Scrolling backend */
2302 static void
2303 do_scroll_view(struct view *view, int lines)
2304 {
2305 bool redraw_current_line = FALSE;
2307 /* The rendering expects the new offset. */
2308 view->offset += lines;
2310 assert(0 <= view->offset && view->offset < view->lines);
2311 assert(lines);
2313 /* Move current line into the view. */
2314 if (view->lineno < view->offset) {
2315 view->lineno = view->offset;
2316 redraw_current_line = TRUE;
2317 } else if (view->lineno >= view->offset + view->height) {
2318 view->lineno = view->offset + view->height - 1;
2319 redraw_current_line = TRUE;
2320 }
2322 assert(view->offset <= view->lineno && view->lineno < view->lines);
2324 /* Redraw the whole screen if scrolling is pointless. */
2325 if (view->height < ABS(lines)) {
2326 redraw_view(view);
2328 } else {
2329 int line = lines > 0 ? view->height - lines : 0;
2330 int end = line + ABS(lines);
2332 scrollok(view->win, TRUE);
2333 wscrl(view->win, lines);
2334 scrollok(view->win, FALSE);
2336 while (line < end && draw_view_line(view, line))
2337 line++;
2339 if (redraw_current_line)
2340 draw_view_line(view, view->lineno - view->offset);
2341 wnoutrefresh(view->win);
2342 }
2344 view->has_scrolled = TRUE;
2345 report("");
2346 }
2348 /* Scroll frontend */
2349 static void
2350 scroll_view(struct view *view, enum request request)
2351 {
2352 int lines = 1;
2354 assert(view_is_displayed(view));
2356 switch (request) {
2357 case REQ_SCROLL_LEFT:
2358 if (view->yoffset == 0) {
2359 report("Cannot scroll beyond the first column");
2360 return;
2361 }
2362 if (view->yoffset <= apply_step(opt_hscroll, view->width))
2363 view->yoffset = 0;
2364 else
2365 view->yoffset -= apply_step(opt_hscroll, view->width);
2366 redraw_view_from(view, 0);
2367 report("");
2368 return;
2369 case REQ_SCROLL_RIGHT:
2370 view->yoffset += apply_step(opt_hscroll, view->width);
2371 redraw_view(view);
2372 report("");
2373 return;
2374 case REQ_SCROLL_PAGE_DOWN:
2375 lines = view->height;
2376 case REQ_SCROLL_LINE_DOWN:
2377 if (view->offset + lines > view->lines)
2378 lines = view->lines - view->offset;
2380 if (lines == 0 || view->offset + view->height >= view->lines) {
2381 report("Cannot scroll beyond the last line");
2382 return;
2383 }
2384 break;
2386 case REQ_SCROLL_PAGE_UP:
2387 lines = view->height;
2388 case REQ_SCROLL_LINE_UP:
2389 if (lines > view->offset)
2390 lines = view->offset;
2392 if (lines == 0) {
2393 report("Cannot scroll beyond the first line");
2394 return;
2395 }
2397 lines = -lines;
2398 break;
2400 default:
2401 die("request %d not handled in switch", request);
2402 }
2404 do_scroll_view(view, lines);
2405 }
2407 /* Cursor moving */
2408 static void
2409 move_view(struct view *view, enum request request)
2410 {
2411 int scroll_steps = 0;
2412 int steps;
2414 switch (request) {
2415 case REQ_MOVE_FIRST_LINE:
2416 steps = -view->lineno;
2417 break;
2419 case REQ_MOVE_LAST_LINE:
2420 steps = view->lines - view->lineno - 1;
2421 break;
2423 case REQ_MOVE_PAGE_UP:
2424 steps = view->height > view->lineno
2425 ? -view->lineno : -view->height;
2426 break;
2428 case REQ_MOVE_PAGE_DOWN:
2429 steps = view->lineno + view->height >= view->lines
2430 ? view->lines - view->lineno - 1 : view->height;
2431 break;
2433 case REQ_MOVE_UP:
2434 steps = -1;
2435 break;
2437 case REQ_MOVE_DOWN:
2438 steps = 1;
2439 break;
2441 default:
2442 die("request %d not handled in switch", request);
2443 }
2445 if (steps <= 0 && view->lineno == 0) {
2446 report("Cannot move beyond the first line");
2447 return;
2449 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2450 report("Cannot move beyond the last line");
2451 return;
2452 }
2454 /* Move the current line */
2455 view->lineno += steps;
2456 assert(0 <= view->lineno && view->lineno < view->lines);
2458 /* Check whether the view needs to be scrolled */
2459 if (view->lineno < view->offset ||
2460 view->lineno >= view->offset + view->height) {
2461 scroll_steps = steps;
2462 if (steps < 0 && -steps > view->offset) {
2463 scroll_steps = -view->offset;
2465 } else if (steps > 0) {
2466 if (view->lineno == view->lines - 1 &&
2467 view->lines > view->height) {
2468 scroll_steps = view->lines - view->offset - 1;
2469 if (scroll_steps >= view->height)
2470 scroll_steps -= view->height - 1;
2471 }
2472 }
2473 }
2475 if (!view_is_displayed(view)) {
2476 view->offset += scroll_steps;
2477 assert(0 <= view->offset && view->offset < view->lines);
2478 view->ops->select(view, &view->line[view->lineno]);
2479 return;
2480 }
2482 /* Repaint the old "current" line if we be scrolling */
2483 if (ABS(steps) < view->height)
2484 draw_view_line(view, view->lineno - steps - view->offset);
2486 if (scroll_steps) {
2487 do_scroll_view(view, scroll_steps);
2488 return;
2489 }
2491 /* Draw the current line */
2492 draw_view_line(view, view->lineno - view->offset);
2494 wnoutrefresh(view->win);
2495 report("");
2496 }
2499 /*
2500 * Searching
2501 */
2503 static void search_view(struct view *view, enum request request);
2505 static bool
2506 grep_text(struct view *view, const char *text[])
2507 {
2508 regmatch_t pmatch;
2509 size_t i;
2511 for (i = 0; text[i]; i++)
2512 if (*text[i] &&
2513 regexec(view->regex, text[i], 1, &pmatch, 0) != REG_NOMATCH)
2514 return TRUE;
2515 return FALSE;
2516 }
2518 static void
2519 select_view_line(struct view *view, unsigned long lineno)
2520 {
2521 unsigned long old_lineno = view->lineno;
2522 unsigned long old_offset = view->offset;
2524 if (goto_view_line(view, view->offset, lineno)) {
2525 if (view_is_displayed(view)) {
2526 if (old_offset != view->offset) {
2527 redraw_view(view);
2528 } else {
2529 draw_view_line(view, old_lineno - view->offset);
2530 draw_view_line(view, view->lineno - view->offset);
2531 wnoutrefresh(view->win);
2532 }
2533 } else {
2534 view->ops->select(view, &view->line[view->lineno]);
2535 }
2536 }
2537 }
2539 static void
2540 find_next(struct view *view, enum request request)
2541 {
2542 unsigned long lineno = view->lineno;
2543 int direction;
2545 if (!*view->grep) {
2546 if (!*opt_search)
2547 report("No previous search");
2548 else
2549 search_view(view, request);
2550 return;
2551 }
2553 switch (request) {
2554 case REQ_SEARCH:
2555 case REQ_FIND_NEXT:
2556 direction = 1;
2557 break;
2559 case REQ_SEARCH_BACK:
2560 case REQ_FIND_PREV:
2561 direction = -1;
2562 break;
2564 default:
2565 return;
2566 }
2568 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2569 lineno += direction;
2571 /* Note, lineno is unsigned long so will wrap around in which case it
2572 * will become bigger than view->lines. */
2573 for (; lineno < view->lines; lineno += direction) {
2574 if (view->ops->grep(view, &view->line[lineno])) {
2575 select_view_line(view, lineno);
2576 report("Line %ld matches '%s'", lineno + 1, view->grep);
2577 return;
2578 }
2579 }
2581 report("No match found for '%s'", view->grep);
2582 }
2584 static void
2585 search_view(struct view *view, enum request request)
2586 {
2587 int regex_err;
2589 if (view->regex) {
2590 regfree(view->regex);
2591 *view->grep = 0;
2592 } else {
2593 view->regex = calloc(1, sizeof(*view->regex));
2594 if (!view->regex)
2595 return;
2596 }
2598 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2599 if (regex_err != 0) {
2600 char buf[SIZEOF_STR] = "unknown error";
2602 regerror(regex_err, view->regex, buf, sizeof(buf));
2603 report("Search failed: %s", buf);
2604 return;
2605 }
2607 string_copy(view->grep, opt_search);
2609 find_next(view, request);
2610 }
2612 /*
2613 * Incremental updating
2614 */
2616 static void
2617 reset_view(struct view *view)
2618 {
2619 int i;
2621 for (i = 0; i < view->lines; i++)
2622 free(view->line[i].data);
2623 free(view->line);
2625 view->p_offset = view->offset;
2626 view->p_yoffset = view->yoffset;
2627 view->p_lineno = view->lineno;
2629 view->line = NULL;
2630 view->offset = 0;
2631 view->yoffset = 0;
2632 view->lines = 0;
2633 view->lineno = 0;
2634 view->line_alloc = 0;
2635 view->vid[0] = 0;
2636 view->update_secs = 0;
2637 }
2639 static void
2640 free_argv(const char *argv[])
2641 {
2642 int argc;
2644 for (argc = 0; argv[argc]; argc++)
2645 free((void *) argv[argc]);
2646 }
2648 static bool
2649 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2650 {
2651 char buf[SIZEOF_STR];
2652 int argc;
2653 bool noreplace = flags == FORMAT_NONE;
2655 free_argv(dst_argv);
2657 for (argc = 0; src_argv[argc]; argc++) {
2658 const char *arg = src_argv[argc];
2659 size_t bufpos = 0;
2661 while (arg) {
2662 char *next = strstr(arg, "%(");
2663 int len = next - arg;
2664 const char *value;
2666 if (!next || noreplace) {
2667 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2668 noreplace = TRUE;
2669 len = strlen(arg);
2670 value = "";
2672 } else if (!prefixcmp(next, "%(directory)")) {
2673 value = opt_path;
2675 } else if (!prefixcmp(next, "%(file)")) {
2676 value = opt_file;
2678 } else if (!prefixcmp(next, "%(ref)")) {
2679 value = *opt_ref ? opt_ref : "HEAD";
2681 } else if (!prefixcmp(next, "%(head)")) {
2682 value = ref_head;
2684 } else if (!prefixcmp(next, "%(commit)")) {
2685 value = ref_commit;
2687 } else if (!prefixcmp(next, "%(blob)")) {
2688 value = ref_blob;
2690 } else {
2691 report("Unknown replacement: `%s`", next);
2692 return FALSE;
2693 }
2695 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2696 return FALSE;
2698 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2699 }
2701 dst_argv[argc] = strdup(buf);
2702 if (!dst_argv[argc])
2703 break;
2704 }
2706 dst_argv[argc] = NULL;
2708 return src_argv[argc] == NULL;
2709 }
2711 static bool
2712 restore_view_position(struct view *view)
2713 {
2714 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2715 return FALSE;
2717 /* Changing the view position cancels the restoring. */
2718 /* FIXME: Changing back to the first line is not detected. */
2719 if (view->offset != 0 || view->lineno != 0) {
2720 view->p_restore = FALSE;
2721 return FALSE;
2722 }
2724 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2725 view_is_displayed(view))
2726 werase(view->win);
2728 view->yoffset = view->p_yoffset;
2729 view->p_restore = FALSE;
2731 return TRUE;
2732 }
2734 static void
2735 end_update(struct view *view, bool force)
2736 {
2737 if (!view->pipe)
2738 return;
2739 while (!view->ops->read(view, NULL))
2740 if (!force)
2741 return;
2742 set_nonblocking_input(FALSE);
2743 if (force)
2744 kill_io(view->pipe);
2745 done_io(view->pipe);
2746 view->pipe = NULL;
2747 }
2749 static void
2750 setup_update(struct view *view, const char *vid)
2751 {
2752 set_nonblocking_input(TRUE);
2753 reset_view(view);
2754 string_copy_rev(view->vid, vid);
2755 view->pipe = &view->io;
2756 view->start_time = time(NULL);
2757 }
2759 static bool
2760 prepare_update(struct view *view, const char *argv[], const char *dir,
2761 enum format_flags flags)
2762 {
2763 if (view->pipe)
2764 end_update(view, TRUE);
2765 return init_io_rd(&view->io, argv, dir, flags);
2766 }
2768 static bool
2769 prepare_update_file(struct view *view, const char *name)
2770 {
2771 if (view->pipe)
2772 end_update(view, TRUE);
2773 return io_open(&view->io, name);
2774 }
2776 static bool
2777 begin_update(struct view *view, bool refresh)
2778 {
2779 if (view->pipe)
2780 end_update(view, TRUE);
2782 if (refresh) {
2783 if (!start_io(&view->io))
2784 return FALSE;
2786 } else {
2787 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2788 opt_path[0] = 0;
2790 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2791 return FALSE;
2793 /* Put the current ref_* value to the view title ref
2794 * member. This is needed by the blob view. Most other
2795 * views sets it automatically after loading because the
2796 * first line is a commit line. */
2797 string_copy_rev(view->ref, view->id);
2798 }
2800 setup_update(view, view->id);
2802 return TRUE;
2803 }
2805 #define ITEM_CHUNK_SIZE 256
2806 static void *
2807 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2808 {
2809 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2810 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2812 if (mem == NULL || num_chunks != num_chunks_new) {
2813 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2814 mem = realloc(mem, *size * item_size);
2815 }
2817 return mem;
2818 }
2820 static struct line *
2821 realloc_lines(struct view *view, size_t line_size)
2822 {
2823 size_t alloc = view->line_alloc;
2824 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2825 sizeof(*view->line));
2827 if (!tmp)
2828 return NULL;
2830 view->line = tmp;
2831 view->line_alloc = alloc;
2832 return view->line;
2833 }
2835 static bool
2836 update_view(struct view *view)
2837 {
2838 char out_buffer[BUFSIZ * 2];
2839 char *line;
2840 /* Clear the view and redraw everything since the tree sorting
2841 * might have rearranged things. */
2842 bool redraw = view->lines == 0;
2843 bool can_read = TRUE;
2845 if (!view->pipe)
2846 return TRUE;
2848 if (!io_can_read(view->pipe)) {
2849 if (view->lines == 0 && view_is_displayed(view)) {
2850 time_t secs = time(NULL) - view->start_time;
2852 if (secs > 1 && secs > view->update_secs) {
2853 if (view->update_secs == 0)
2854 redraw_view(view);
2855 update_view_title(view);
2856 view->update_secs = secs;
2857 }
2858 }
2859 return TRUE;
2860 }
2862 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2863 if (opt_iconv != ICONV_NONE) {
2864 ICONV_CONST char *inbuf = line;
2865 size_t inlen = strlen(line) + 1;
2867 char *outbuf = out_buffer;
2868 size_t outlen = sizeof(out_buffer);
2870 size_t ret;
2872 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2873 if (ret != (size_t) -1)
2874 line = out_buffer;
2875 }
2877 if (!view->ops->read(view, line)) {
2878 report("Allocation failure");
2879 end_update(view, TRUE);
2880 return FALSE;
2881 }
2882 }
2884 {
2885 unsigned long lines = view->lines;
2886 int digits;
2888 for (digits = 0; lines; digits++)
2889 lines /= 10;
2891 /* Keep the displayed view in sync with line number scaling. */
2892 if (digits != view->digits) {
2893 view->digits = digits;
2894 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2895 redraw = TRUE;
2896 }
2897 }
2899 if (io_error(view->pipe)) {
2900 report("Failed to read: %s", io_strerror(view->pipe));
2901 end_update(view, TRUE);
2903 } else if (io_eof(view->pipe)) {
2904 report("");
2905 end_update(view, FALSE);
2906 }
2908 if (restore_view_position(view))
2909 redraw = TRUE;
2911 if (!view_is_displayed(view))
2912 return TRUE;
2914 if (redraw)
2915 redraw_view_from(view, 0);
2916 else
2917 redraw_view_dirty(view);
2919 /* Update the title _after_ the redraw so that if the redraw picks up a
2920 * commit reference in view->ref it'll be available here. */
2921 update_view_title(view);
2922 return TRUE;
2923 }
2925 static struct line *
2926 add_line_data(struct view *view, void *data, enum line_type type)
2927 {
2928 struct line *line;
2930 if (!realloc_lines(view, view->lines + 1))
2931 return NULL;
2933 line = &view->line[view->lines++];
2934 memset(line, 0, sizeof(*line));
2935 line->type = type;
2936 line->data = data;
2937 line->dirty = 1;
2939 return line;
2940 }
2942 static struct line *
2943 add_line_text(struct view *view, const char *text, enum line_type type)
2944 {
2945 char *data = text ? strdup(text) : NULL;
2947 return data ? add_line_data(view, data, type) : NULL;
2948 }
2950 static struct line *
2951 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2952 {
2953 char buf[SIZEOF_STR];
2954 va_list args;
2956 va_start(args, fmt);
2957 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2958 buf[0] = 0;
2959 va_end(args);
2961 return buf[0] ? add_line_text(view, buf, type) : NULL;
2962 }
2964 /*
2965 * View opening
2966 */
2968 enum open_flags {
2969 OPEN_DEFAULT = 0, /* Use default view switching. */
2970 OPEN_SPLIT = 1, /* Split current view. */
2971 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2972 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2973 OPEN_PREPARED = 32, /* Open already prepared command. */
2974 };
2976 static void
2977 open_view(struct view *prev, enum request request, enum open_flags flags)
2978 {
2979 bool split = !!(flags & OPEN_SPLIT);
2980 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2981 bool nomaximize = !!(flags & OPEN_REFRESH);
2982 struct view *view = VIEW(request);
2983 int nviews = displayed_views();
2984 struct view *base_view = display[0];
2986 if (view == prev && nviews == 1 && !reload) {
2987 report("Already in %s view", view->name);
2988 return;
2989 }
2991 if (view->git_dir && !opt_git_dir[0]) {
2992 report("The %s view is disabled in pager view", view->name);
2993 return;
2994 }
2996 if (split) {
2997 display[1] = view;
2998 current_view = 1;
2999 } else if (!nomaximize) {
3000 /* Maximize the current view. */
3001 memset(display, 0, sizeof(display));
3002 current_view = 0;
3003 display[current_view] = view;
3004 }
3006 /* Resize the view when switching between split- and full-screen,
3007 * or when switching between two different full-screen views. */
3008 if (nviews != displayed_views() ||
3009 (nviews == 1 && base_view != display[0]))
3010 resize_display();
3012 if (view->ops->open) {
3013 if (view->pipe)
3014 end_update(view, TRUE);
3015 if (!view->ops->open(view)) {
3016 report("Failed to load %s view", view->name);
3017 return;
3018 }
3019 restore_view_position(view);
3021 } else if ((reload || strcmp(view->vid, view->id)) &&
3022 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3023 report("Failed to load %s view", view->name);
3024 return;
3025 }
3027 if (split && prev->lineno - prev->offset >= prev->height) {
3028 /* Take the title line into account. */
3029 int lines = prev->lineno - prev->offset - prev->height + 1;
3031 /* Scroll the view that was split if the current line is
3032 * outside the new limited view. */
3033 do_scroll_view(prev, lines);
3034 }
3036 if (prev && view != prev) {
3037 if (split) {
3038 /* "Blur" the previous view. */
3039 update_view_title(prev);
3040 }
3042 view->parent = prev;
3043 }
3045 if (view->pipe && view->lines == 0) {
3046 /* Clear the old view and let the incremental updating refill
3047 * the screen. */
3048 werase(view->win);
3049 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3050 report("");
3051 } else if (view_is_displayed(view)) {
3052 redraw_view(view);
3053 report("");
3054 }
3055 }
3057 static void
3058 open_external_viewer(const char *argv[], const char *dir)
3059 {
3060 def_prog_mode(); /* save current tty modes */
3061 endwin(); /* restore original tty modes */
3062 run_io_fg(argv, dir);
3063 fprintf(stderr, "Press Enter to continue");
3064 getc(opt_tty);
3065 reset_prog_mode();
3066 redraw_display(TRUE);
3067 }
3069 static void
3070 open_mergetool(const char *file)
3071 {
3072 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3074 open_external_viewer(mergetool_argv, opt_cdup);
3075 }
3077 static void
3078 open_editor(bool from_root, const char *file)
3079 {
3080 const char *editor_argv[] = { "vi", file, NULL };
3081 const char *editor;
3083 editor = getenv("GIT_EDITOR");
3084 if (!editor && *opt_editor)
3085 editor = opt_editor;
3086 if (!editor)
3087 editor = getenv("VISUAL");
3088 if (!editor)
3089 editor = getenv("EDITOR");
3090 if (!editor)
3091 editor = "vi";
3093 editor_argv[0] = editor;
3094 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
3095 }
3097 static void
3098 open_run_request(enum request request)
3099 {
3100 struct run_request *req = get_run_request(request);
3101 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3103 if (!req) {
3104 report("Unknown run request");
3105 return;
3106 }
3108 if (format_argv(argv, req->argv, FORMAT_ALL))
3109 open_external_viewer(argv, NULL);
3110 free_argv(argv);
3111 }
3113 /*
3114 * User request switch noodle
3115 */
3117 static int
3118 view_driver(struct view *view, enum request request)
3119 {
3120 int i;
3122 if (request == REQ_NONE)
3123 return TRUE;
3125 if (request > REQ_NONE) {
3126 open_run_request(request);
3127 /* FIXME: When all views can refresh always do this. */
3128 if (view == VIEW(REQ_VIEW_STATUS) ||
3129 view == VIEW(REQ_VIEW_MAIN) ||
3130 view == VIEW(REQ_VIEW_LOG) ||
3131 view == VIEW(REQ_VIEW_STAGE))
3132 request = REQ_REFRESH;
3133 else
3134 return TRUE;
3135 }
3137 if (view && view->lines) {
3138 request = view->ops->request(view, request, &view->line[view->lineno]);
3139 if (request == REQ_NONE)
3140 return TRUE;
3141 }
3143 switch (request) {
3144 case REQ_MOVE_UP:
3145 case REQ_MOVE_DOWN:
3146 case REQ_MOVE_PAGE_UP:
3147 case REQ_MOVE_PAGE_DOWN:
3148 case REQ_MOVE_FIRST_LINE:
3149 case REQ_MOVE_LAST_LINE:
3150 move_view(view, request);
3151 break;
3153 case REQ_SCROLL_LEFT:
3154 case REQ_SCROLL_RIGHT:
3155 case REQ_SCROLL_LINE_DOWN:
3156 case REQ_SCROLL_LINE_UP:
3157 case REQ_SCROLL_PAGE_DOWN:
3158 case REQ_SCROLL_PAGE_UP:
3159 scroll_view(view, request);
3160 break;
3162 case REQ_VIEW_BLAME:
3163 if (!opt_file[0]) {
3164 report("No file chosen, press %s to open tree view",
3165 get_key(REQ_VIEW_TREE));
3166 break;
3167 }
3168 open_view(view, request, OPEN_DEFAULT);
3169 break;
3171 case REQ_VIEW_BLOB:
3172 if (!ref_blob[0]) {
3173 report("No file chosen, press %s to open tree view",
3174 get_key(REQ_VIEW_TREE));
3175 break;
3176 }
3177 open_view(view, request, OPEN_DEFAULT);
3178 break;
3180 case REQ_VIEW_PAGER:
3181 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3182 report("No pager content, press %s to run command from prompt",
3183 get_key(REQ_PROMPT));
3184 break;
3185 }
3186 open_view(view, request, OPEN_DEFAULT);
3187 break;
3189 case REQ_VIEW_STAGE:
3190 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3191 report("No stage content, press %s to open the status view and choose file",
3192 get_key(REQ_VIEW_STATUS));
3193 break;
3194 }
3195 open_view(view, request, OPEN_DEFAULT);
3196 break;
3198 case REQ_VIEW_STATUS:
3199 if (opt_is_inside_work_tree == FALSE) {
3200 report("The status view requires a working tree");
3201 break;
3202 }
3203 open_view(view, request, OPEN_DEFAULT);
3204 break;
3206 case REQ_VIEW_MAIN:
3207 case REQ_VIEW_DIFF:
3208 case REQ_VIEW_LOG:
3209 case REQ_VIEW_TREE:
3210 case REQ_VIEW_HELP:
3211 open_view(view, request, OPEN_DEFAULT);
3212 break;
3214 case REQ_NEXT:
3215 case REQ_PREVIOUS:
3216 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3218 if ((view == VIEW(REQ_VIEW_DIFF) &&
3219 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3220 (view == VIEW(REQ_VIEW_DIFF) &&
3221 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3222 (view == VIEW(REQ_VIEW_STAGE) &&
3223 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3224 (view == VIEW(REQ_VIEW_BLOB) &&
3225 view->parent == VIEW(REQ_VIEW_TREE))) {
3226 int line;
3228 view = view->parent;
3229 line = view->lineno;
3230 move_view(view, request);
3231 if (view_is_displayed(view))
3232 update_view_title(view);
3233 if (line != view->lineno)
3234 view->ops->request(view, REQ_ENTER,
3235 &view->line[view->lineno]);
3237 } else {
3238 move_view(view, request);
3239 }
3240 break;
3242 case REQ_VIEW_NEXT:
3243 {
3244 int nviews = displayed_views();
3245 int next_view = (current_view + 1) % nviews;
3247 if (next_view == current_view) {
3248 report("Only one view is displayed");
3249 break;
3250 }
3252 current_view = next_view;
3253 /* Blur out the title of the previous view. */
3254 update_view_title(view);
3255 report("");
3256 break;
3257 }
3258 case REQ_REFRESH:
3259 report("Refreshing is not yet supported for the %s view", view->name);
3260 break;
3262 case REQ_MAXIMIZE:
3263 if (displayed_views() == 2)
3264 maximize_view(view);
3265 break;
3267 case REQ_TOGGLE_LINENO:
3268 toggle_view_option(&opt_line_number, "line numbers");
3269 break;
3271 case REQ_TOGGLE_DATE:
3272 toggle_view_option(&opt_date, "date display");
3273 break;
3275 case REQ_TOGGLE_AUTHOR:
3276 toggle_view_option(&opt_author, "author display");
3277 break;
3279 case REQ_TOGGLE_REV_GRAPH:
3280 toggle_view_option(&opt_rev_graph, "revision graph display");
3281 break;
3283 case REQ_TOGGLE_REFS:
3284 toggle_view_option(&opt_show_refs, "reference display");
3285 break;
3287 case REQ_SEARCH:
3288 case REQ_SEARCH_BACK:
3289 search_view(view, request);
3290 break;
3292 case REQ_FIND_NEXT:
3293 case REQ_FIND_PREV:
3294 find_next(view, request);
3295 break;
3297 case REQ_STOP_LOADING:
3298 for (i = 0; i < ARRAY_SIZE(views); i++) {
3299 view = &views[i];
3300 if (view->pipe)
3301 report("Stopped loading the %s view", view->name),
3302 end_update(view, TRUE);
3303 }
3304 break;
3306 case REQ_SHOW_VERSION:
3307 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3308 return TRUE;
3310 case REQ_SCREEN_REDRAW:
3311 redraw_display(TRUE);
3312 break;
3314 case REQ_EDIT:
3315 report("Nothing to edit");
3316 break;
3318 case REQ_ENTER:
3319 report("Nothing to enter");
3320 break;
3322 case REQ_VIEW_CLOSE:
3323 /* XXX: Mark closed views by letting view->parent point to the
3324 * view itself. Parents to closed view should never be
3325 * followed. */
3326 if (view->parent &&
3327 view->parent->parent != view->parent) {
3328 maximize_view(view->parent);
3329 view->parent = view;
3330 break;
3331 }
3332 /* Fall-through */
3333 case REQ_QUIT:
3334 return FALSE;
3336 default:
3337 report("Unknown key, press 'h' for help");
3338 return TRUE;
3339 }
3341 return TRUE;
3342 }
3345 /*
3346 * View backend utilities
3347 */
3349 /* Small author cache to reduce memory consumption. It uses binary
3350 * search to lookup or find place to position new entries. No entries
3351 * are ever freed. */
3352 static const char *
3353 get_author(const char *name)
3354 {
3355 static const char **authors;
3356 static size_t authors_alloc;
3357 static size_t authors_size;
3358 const char **tmp;
3359 int from = 0, to = authors_size - 1;
3361 while (from <= to) {
3362 size_t pos = (to + from) / 2;
3363 int cmp = strcmp(name, authors[pos]);
3365 if (!cmp)
3366 return authors[pos];
3368 if (cmp < 0)
3369 to = pos - 1;
3370 else
3371 from = pos + 1;
3372 }
3374 tmp = realloc_items(authors, &authors_alloc, authors_size + 1, sizeof(*authors));
3375 if (!tmp)
3376 return NULL;
3377 name = strdup(name);
3378 if (!name)
3379 return NULL;
3381 authors = tmp;
3382 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3383 authors[from] = name;
3384 authors_size++;
3386 return name;
3387 }
3389 static void
3390 parse_timezone(time_t *time, const char *zone)
3391 {
3392 long tz;
3394 tz = ('0' - zone[1]) * 60 * 60 * 10;
3395 tz += ('0' - zone[2]) * 60 * 60;
3396 tz += ('0' - zone[3]) * 60;
3397 tz += ('0' - zone[4]);
3399 if (zone[0] == '-')
3400 tz = -tz;
3402 *time -= tz;
3403 }
3405 /* Parse author lines where the name may be empty:
3406 * author <email@address.tld> 1138474660 +0100
3407 */
3408 static void
3409 parse_author_line(char *ident, const char **author, time_t *time)
3410 {
3411 char *nameend = strchr(ident, '<');
3412 char *emailend = strchr(ident, '>');
3414 if (nameend && emailend)
3415 *nameend = *emailend = 0;
3416 ident = chomp_string(ident);
3417 if (!*ident) {
3418 if (nameend)
3419 ident = chomp_string(nameend + 1);
3420 if (!*ident)
3421 ident = "Unknown";
3422 }
3424 *author = get_author(ident);
3426 /* Parse epoch and timezone */
3427 if (emailend && emailend[1] == ' ') {
3428 char *secs = emailend + 2;
3429 char *zone = strchr(secs, ' ');
3431 *time = (time_t) atol(secs);
3433 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3434 parse_timezone(time, zone + 1);
3435 }
3436 }
3438 static enum input_status
3439 select_commit_parent_handler(void *data, char *buf, int c)
3440 {
3441 size_t parents = *(size_t *) data;
3442 int parent = 0;
3444 if (!isdigit(c))
3445 return INPUT_SKIP;
3447 if (*buf)
3448 parent = atoi(buf) * 10;
3449 parent += c - '0';
3451 if (parent > parents)
3452 return INPUT_SKIP;
3453 return INPUT_OK;
3454 }
3456 static bool
3457 select_commit_parent(const char *id, char rev[SIZEOF_REV], const char *path)
3458 {
3459 char buf[SIZEOF_STR * 4];
3460 const char *revlist_argv[] = {
3461 "git", "rev-list", "-1", "--parents", id, "--", path, NULL
3462 };
3463 int parents;
3465 if (!run_io_buf(revlist_argv, buf, sizeof(buf)) ||
3466 !*chomp_string(buf) ||
3467 (parents = (strlen(buf) / 40) - 1) < 0) {
3468 report("Failed to get parent information");
3469 return FALSE;
3471 } else if (parents == 0) {
3472 if (path)
3473 report("Path '%s' does not exist in the parent", path);
3474 else
3475 report("The selected commit has no parents");
3476 return FALSE;
3477 }
3479 if (parents > 1) {
3480 char prompt[SIZEOF_STR];
3481 char *result;
3483 if (!string_format(prompt, "Which parent? [1..%d] ", parents))
3484 return FALSE;
3485 result = prompt_input(prompt, select_commit_parent_handler, &parents);
3486 if (!result)
3487 return FALSE;
3488 parents = atoi(result);
3489 }
3491 string_copy_rev(rev, &buf[41 * parents]);
3492 return TRUE;
3493 }
3495 /*
3496 * Pager backend
3497 */
3499 static bool
3500 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3501 {
3502 char text[SIZEOF_STR];
3504 if (opt_line_number && draw_lineno(view, lineno))
3505 return TRUE;
3507 string_expand(text, sizeof(text), line->data, opt_tab_size);
3508 draw_text(view, line->type, text, TRUE);
3509 return TRUE;
3510 }
3512 static bool
3513 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3514 {
3515 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3516 char refbuf[SIZEOF_STR];
3517 char *ref = NULL;
3519 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3520 ref = chomp_string(refbuf);
3522 if (!ref || !*ref)
3523 return TRUE;
3525 /* This is the only fatal call, since it can "corrupt" the buffer. */
3526 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3527 return FALSE;
3529 return TRUE;
3530 }
3532 static void
3533 add_pager_refs(struct view *view, struct line *line)
3534 {
3535 char buf[SIZEOF_STR];
3536 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3537 struct ref **refs;
3538 size_t bufpos = 0, refpos = 0;
3539 const char *sep = "Refs: ";
3540 bool is_tag = FALSE;
3542 assert(line->type == LINE_COMMIT);
3544 refs = get_refs(commit_id);
3545 if (!refs) {
3546 if (view == VIEW(REQ_VIEW_DIFF))
3547 goto try_add_describe_ref;
3548 return;
3549 }
3551 do {
3552 struct ref *ref = refs[refpos];
3553 const char *fmt = ref->tag ? "%s[%s]" :
3554 ref->remote ? "%s<%s>" : "%s%s";
3556 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3557 return;
3558 sep = ", ";
3559 if (ref->tag)
3560 is_tag = TRUE;
3561 } while (refs[refpos++]->next);
3563 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3564 try_add_describe_ref:
3565 /* Add <tag>-g<commit_id> "fake" reference. */
3566 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3567 return;
3568 }
3570 if (bufpos == 0)
3571 return;
3573 add_line_text(view, buf, LINE_PP_REFS);
3574 }
3576 static bool
3577 pager_read(struct view *view, char *data)
3578 {
3579 struct line *line;
3581 if (!data)
3582 return TRUE;
3584 line = add_line_text(view, data, get_line_type(data));
3585 if (!line)
3586 return FALSE;
3588 if (line->type == LINE_COMMIT &&
3589 (view == VIEW(REQ_VIEW_DIFF) ||
3590 view == VIEW(REQ_VIEW_LOG)))
3591 add_pager_refs(view, line);
3593 return TRUE;
3594 }
3596 static enum request
3597 pager_request(struct view *view, enum request request, struct line *line)
3598 {
3599 int split = 0;
3601 if (request != REQ_ENTER)
3602 return request;
3604 if (line->type == LINE_COMMIT &&
3605 (view == VIEW(REQ_VIEW_LOG) ||
3606 view == VIEW(REQ_VIEW_PAGER))) {
3607 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3608 split = 1;
3609 }
3611 /* Always scroll the view even if it was split. That way
3612 * you can use Enter to scroll through the log view and
3613 * split open each commit diff. */
3614 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3616 /* FIXME: A minor workaround. Scrolling the view will call report("")
3617 * but if we are scrolling a non-current view this won't properly
3618 * update the view title. */
3619 if (split)
3620 update_view_title(view);
3622 return REQ_NONE;
3623 }
3625 static bool
3626 pager_grep(struct view *view, struct line *line)
3627 {
3628 const char *text[] = { line->data, NULL };
3630 return grep_text(view, text);
3631 }
3633 static void
3634 pager_select(struct view *view, struct line *line)
3635 {
3636 if (line->type == LINE_COMMIT) {
3637 char *text = (char *)line->data + STRING_SIZE("commit ");
3639 if (view != VIEW(REQ_VIEW_PAGER))
3640 string_copy_rev(view->ref, text);
3641 string_copy_rev(ref_commit, text);
3642 }
3643 }
3645 static struct view_ops pager_ops = {
3646 "line",
3647 NULL,
3648 NULL,
3649 pager_read,
3650 pager_draw,
3651 pager_request,
3652 pager_grep,
3653 pager_select,
3654 };
3656 static const char *log_argv[SIZEOF_ARG] = {
3657 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3658 };
3660 static enum request
3661 log_request(struct view *view, enum request request, struct line *line)
3662 {
3663 switch (request) {
3664 case REQ_REFRESH:
3665 load_refs();
3666 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3667 return REQ_NONE;
3668 default:
3669 return pager_request(view, request, line);
3670 }
3671 }
3673 static struct view_ops log_ops = {
3674 "line",
3675 log_argv,
3676 NULL,
3677 pager_read,
3678 pager_draw,
3679 log_request,
3680 pager_grep,
3681 pager_select,
3682 };
3684 static const char *diff_argv[SIZEOF_ARG] = {
3685 "git", "show", "--pretty=fuller", "--no-color", "--root",
3686 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3687 };
3689 static struct view_ops diff_ops = {
3690 "line",
3691 diff_argv,
3692 NULL,
3693 pager_read,
3694 pager_draw,
3695 pager_request,
3696 pager_grep,
3697 pager_select,
3698 };
3700 /*
3701 * Help backend
3702 */
3704 static bool
3705 help_open(struct view *view)
3706 {
3707 char buf[SIZEOF_STR];
3708 size_t bufpos;
3709 int i;
3711 if (view->lines > 0)
3712 return TRUE;
3714 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3716 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3717 const char *key;
3719 if (req_info[i].request == REQ_NONE)
3720 continue;
3722 if (!req_info[i].request) {
3723 add_line_text(view, "", LINE_DEFAULT);
3724 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3725 continue;
3726 }
3728 key = get_key(req_info[i].request);
3729 if (!*key)
3730 key = "(no key defined)";
3732 for (bufpos = 0; bufpos <= req_info[i].namelen; bufpos++) {
3733 buf[bufpos] = tolower(req_info[i].name[bufpos]);
3734 if (buf[bufpos] == '_')
3735 buf[bufpos] = '-';
3736 }
3738 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s",
3739 key, buf, req_info[i].help);
3740 }
3742 if (run_requests) {
3743 add_line_text(view, "", LINE_DEFAULT);
3744 add_line_text(view, "External commands:", LINE_DEFAULT);
3745 }
3747 for (i = 0; i < run_requests; i++) {
3748 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3749 const char *key;
3750 int argc;
3752 if (!req)
3753 continue;
3755 key = get_key_name(req->key);
3756 if (!*key)
3757 key = "(no key defined)";
3759 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3760 if (!string_format_from(buf, &bufpos, "%s%s",
3761 argc ? " " : "", req->argv[argc]))
3762 return REQ_NONE;
3764 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3765 keymap_table[req->keymap].name, key, buf);
3766 }
3768 return TRUE;
3769 }
3771 static struct view_ops help_ops = {
3772 "line",
3773 NULL,
3774 help_open,
3775 NULL,
3776 pager_draw,
3777 pager_request,
3778 pager_grep,
3779 pager_select,
3780 };
3783 /*
3784 * Tree backend
3785 */
3787 struct tree_stack_entry {
3788 struct tree_stack_entry *prev; /* Entry below this in the stack */
3789 unsigned long lineno; /* Line number to restore */
3790 char *name; /* Position of name in opt_path */
3791 };
3793 /* The top of the path stack. */
3794 static struct tree_stack_entry *tree_stack = NULL;
3795 unsigned long tree_lineno = 0;
3797 static void
3798 pop_tree_stack_entry(void)
3799 {
3800 struct tree_stack_entry *entry = tree_stack;
3802 tree_lineno = entry->lineno;
3803 entry->name[0] = 0;
3804 tree_stack = entry->prev;
3805 free(entry);
3806 }
3808 static void
3809 push_tree_stack_entry(const char *name, unsigned long lineno)
3810 {
3811 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3812 size_t pathlen = strlen(opt_path);
3814 if (!entry)
3815 return;
3817 entry->prev = tree_stack;
3818 entry->name = opt_path + pathlen;
3819 tree_stack = entry;
3821 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3822 pop_tree_stack_entry();
3823 return;
3824 }
3826 /* Move the current line to the first tree entry. */
3827 tree_lineno = 1;
3828 entry->lineno = lineno;
3829 }
3831 /* Parse output from git-ls-tree(1):
3832 *
3833 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3834 */
3836 #define SIZEOF_TREE_ATTR \
3837 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3839 #define SIZEOF_TREE_MODE \
3840 STRING_SIZE("100644 ")
3842 #define TREE_ID_OFFSET \
3843 STRING_SIZE("100644 blob ")
3845 struct tree_entry {
3846 char id[SIZEOF_REV];
3847 mode_t mode;
3848 time_t time; /* Date from the author ident. */
3849 const char *author; /* Author of the commit. */
3850 char name[1];
3851 };
3853 static const char *
3854 tree_path(struct line *line)
3855 {
3856 return ((struct tree_entry *) line->data)->name;
3857 }
3860 static int
3861 tree_compare_entry(struct line *line1, struct line *line2)
3862 {
3863 if (line1->type != line2->type)
3864 return line1->type == LINE_TREE_DIR ? -1 : 1;
3865 return strcmp(tree_path(line1), tree_path(line2));
3866 }
3868 static struct line *
3869 tree_entry(struct view *view, enum line_type type, const char *path,
3870 const char *mode, const char *id)
3871 {
3872 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3873 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3875 if (!entry || !line) {
3876 free(entry);
3877 return NULL;
3878 }
3880 strncpy(entry->name, path, strlen(path));
3881 if (mode)
3882 entry->mode = strtoul(mode, NULL, 8);
3883 if (id)
3884 string_copy_rev(entry->id, id);
3886 return line;
3887 }
3889 static bool
3890 tree_read_date(struct view *view, char *text, bool *read_date)
3891 {
3892 static const char *author_name;
3893 static time_t author_time;
3895 if (!text && *read_date) {
3896 *read_date = FALSE;
3897 return TRUE;
3899 } else if (!text) {
3900 char *path = *opt_path ? opt_path : ".";
3901 /* Find next entry to process */
3902 const char *log_file[] = {
3903 "git", "log", "--no-color", "--pretty=raw",
3904 "--cc", "--raw", view->id, "--", path, NULL
3905 };
3906 struct io io = {};
3908 if (!view->lines) {
3909 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3910 report("Tree is empty");
3911 return TRUE;
3912 }
3914 if (!run_io_rd(&io, log_file, FORMAT_NONE)) {
3915 report("Failed to load tree data");
3916 return TRUE;
3917 }
3919 done_io(view->pipe);
3920 view->io = io;
3921 *read_date = TRUE;
3922 return FALSE;
3924 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3925 parse_author_line(text + STRING_SIZE("author "),
3926 &author_name, &author_time);
3928 } else if (*text == ':') {
3929 char *pos;
3930 size_t annotated = 1;
3931 size_t i;
3933 pos = strchr(text, '\t');
3934 if (!pos)
3935 return TRUE;
3936 text = pos + 1;
3937 if (*opt_prefix && !strncmp(text, opt_prefix, strlen(opt_prefix)))
3938 text += strlen(opt_prefix);
3939 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3940 text += strlen(opt_path);
3941 pos = strchr(text, '/');
3942 if (pos)
3943 *pos = 0;
3945 for (i = 1; i < view->lines; i++) {
3946 struct line *line = &view->line[i];
3947 struct tree_entry *entry = line->data;
3949 annotated += !!entry->author;
3950 if (entry->author || strcmp(entry->name, text))
3951 continue;
3953 entry->author = author_name;
3954 entry->time = author_time;
3955 line->dirty = 1;
3956 break;
3957 }
3959 if (annotated == view->lines)
3960 kill_io(view->pipe);
3961 }
3962 return TRUE;
3963 }
3965 static bool
3966 tree_read(struct view *view, char *text)
3967 {
3968 static bool read_date = FALSE;
3969 struct tree_entry *data;
3970 struct line *entry, *line;
3971 enum line_type type;
3972 size_t textlen = text ? strlen(text) : 0;
3973 char *path = text + SIZEOF_TREE_ATTR;
3975 if (read_date || !text)
3976 return tree_read_date(view, text, &read_date);
3978 if (textlen <= SIZEOF_TREE_ATTR)
3979 return FALSE;
3980 if (view->lines == 0 &&
3981 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3982 return FALSE;
3984 /* Strip the path part ... */
3985 if (*opt_path) {
3986 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3987 size_t striplen = strlen(opt_path);
3989 if (pathlen > striplen)
3990 memmove(path, path + striplen,
3991 pathlen - striplen + 1);
3993 /* Insert "link" to parent directory. */
3994 if (view->lines == 1 &&
3995 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3996 return FALSE;
3997 }
3999 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
4000 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
4001 if (!entry)
4002 return FALSE;
4003 data = entry->data;
4005 /* Skip "Directory ..." and ".." line. */
4006 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4007 if (tree_compare_entry(line, entry) <= 0)
4008 continue;
4010 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4012 line->data = data;
4013 line->type = type;
4014 for (; line <= entry; line++)
4015 line->dirty = line->cleareol = 1;
4016 return TRUE;
4017 }
4019 if (tree_lineno > view->lineno) {
4020 view->lineno = tree_lineno;
4021 tree_lineno = 0;
4022 }
4024 return TRUE;
4025 }
4027 static bool
4028 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4029 {
4030 struct tree_entry *entry = line->data;
4032 if (line->type == LINE_TREE_HEAD) {
4033 if (draw_text(view, line->type, "Directory path /", TRUE))
4034 return TRUE;
4035 } else {
4036 if (draw_mode(view, entry->mode))
4037 return TRUE;
4039 if (opt_author && draw_author(view, entry->author))
4040 return TRUE;
4042 if (opt_date && draw_date(view, entry->author ? &entry->time : NULL))
4043 return TRUE;
4044 }
4045 if (draw_text(view, line->type, entry->name, TRUE))
4046 return TRUE;
4047 return TRUE;
4048 }
4050 static void
4051 open_blob_editor()
4052 {
4053 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4054 int fd = mkstemp(file);
4056 if (fd == -1)
4057 report("Failed to create temporary file");
4058 else if (!run_io_append(blob_ops.argv, FORMAT_ALL, fd))
4059 report("Failed to save blob data to file");
4060 else
4061 open_editor(FALSE, file);
4062 if (fd != -1)
4063 unlink(file);
4064 }
4066 static enum request
4067 tree_request(struct view *view, enum request request, struct line *line)
4068 {
4069 enum open_flags flags;
4071 switch (request) {
4072 case REQ_VIEW_BLAME:
4073 if (line->type != LINE_TREE_FILE) {
4074 report("Blame only supported for files");
4075 return REQ_NONE;
4076 }
4078 string_copy(opt_ref, view->vid);
4079 return request;
4081 case REQ_EDIT:
4082 if (line->type != LINE_TREE_FILE) {
4083 report("Edit only supported for files");
4084 } else if (!is_head_commit(view->vid)) {
4085 open_blob_editor();
4086 } else {
4087 open_editor(TRUE, opt_file);
4088 }
4089 return REQ_NONE;
4091 case REQ_PARENT:
4092 if (!*opt_path) {
4093 /* quit view if at top of tree */
4094 return REQ_VIEW_CLOSE;
4095 }
4096 /* fake 'cd ..' */
4097 line = &view->line[1];
4098 break;
4100 case REQ_ENTER:
4101 break;
4103 default:
4104 return request;
4105 }
4107 /* Cleanup the stack if the tree view is at a different tree. */
4108 while (!*opt_path && tree_stack)
4109 pop_tree_stack_entry();
4111 switch (line->type) {
4112 case LINE_TREE_DIR:
4113 /* Depending on whether it is a subdirectory or parent link
4114 * mangle the path buffer. */
4115 if (line == &view->line[1] && *opt_path) {
4116 pop_tree_stack_entry();
4118 } else {
4119 const char *basename = tree_path(line);
4121 push_tree_stack_entry(basename, view->lineno);
4122 }
4124 /* Trees and subtrees share the same ID, so they are not not
4125 * unique like blobs. */
4126 flags = OPEN_RELOAD;
4127 request = REQ_VIEW_TREE;
4128 break;
4130 case LINE_TREE_FILE:
4131 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4132 request = REQ_VIEW_BLOB;
4133 break;
4135 default:
4136 return REQ_NONE;
4137 }
4139 open_view(view, request, flags);
4140 if (request == REQ_VIEW_TREE)
4141 view->lineno = tree_lineno;
4143 return REQ_NONE;
4144 }
4146 static bool
4147 tree_grep(struct view *view, struct line *line)
4148 {
4149 struct tree_entry *entry = line->data;
4150 const char *text[] = {
4151 entry->name,
4152 opt_author ? entry->author : "",
4153 opt_date ? mkdate(&entry->time) : "",
4154 NULL
4155 };
4157 return grep_text(view, text);
4158 }
4160 static void
4161 tree_select(struct view *view, struct line *line)
4162 {
4163 struct tree_entry *entry = line->data;
4165 if (line->type == LINE_TREE_FILE) {
4166 string_copy_rev(ref_blob, entry->id);
4167 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4169 } else if (line->type != LINE_TREE_DIR) {
4170 return;
4171 }
4173 string_copy_rev(view->ref, entry->id);
4174 }
4176 static const char *tree_argv[SIZEOF_ARG] = {
4177 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4178 };
4180 static struct view_ops tree_ops = {
4181 "file",
4182 tree_argv,
4183 NULL,
4184 tree_read,
4185 tree_draw,
4186 tree_request,
4187 tree_grep,
4188 tree_select,
4189 };
4191 static bool
4192 blob_read(struct view *view, char *line)
4193 {
4194 if (!line)
4195 return TRUE;
4196 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4197 }
4199 static enum request
4200 blob_request(struct view *view, enum request request, struct line *line)
4201 {
4202 switch (request) {
4203 case REQ_EDIT:
4204 open_blob_editor();
4205 return REQ_NONE;
4206 default:
4207 return pager_request(view, request, line);
4208 }
4209 }
4211 static const char *blob_argv[SIZEOF_ARG] = {
4212 "git", "cat-file", "blob", "%(blob)", NULL
4213 };
4215 static struct view_ops blob_ops = {
4216 "line",
4217 blob_argv,
4218 NULL,
4219 blob_read,
4220 pager_draw,
4221 blob_request,
4222 pager_grep,
4223 pager_select,
4224 };
4226 /*
4227 * Blame backend
4228 *
4229 * Loading the blame view is a two phase job:
4230 *
4231 * 1. File content is read either using opt_file from the
4232 * filesystem or using git-cat-file.
4233 * 2. Then blame information is incrementally added by
4234 * reading output from git-blame.
4235 */
4237 static const char *blame_head_argv[] = {
4238 "git", "blame", "--incremental", "--", "%(file)", NULL
4239 };
4241 static const char *blame_ref_argv[] = {
4242 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4243 };
4245 static const char *blame_cat_file_argv[] = {
4246 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4247 };
4249 struct blame_commit {
4250 char id[SIZEOF_REV]; /* SHA1 ID. */
4251 char title[128]; /* First line of the commit message. */
4252 const char *author; /* Author of the commit. */
4253 time_t time; /* Date from the author ident. */
4254 char filename[128]; /* Name of file. */
4255 bool has_previous; /* Was a "previous" line detected. */
4256 };
4258 struct blame {
4259 struct blame_commit *commit;
4260 unsigned long lineno;
4261 char text[1];
4262 };
4264 static bool
4265 blame_open(struct view *view)
4266 {
4267 if (*opt_ref || !io_open(&view->io, opt_file)) {
4268 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
4269 return FALSE;
4270 }
4272 setup_update(view, opt_file);
4273 string_format(view->ref, "%s ...", opt_file);
4275 return TRUE;
4276 }
4278 static struct blame_commit *
4279 get_blame_commit(struct view *view, const char *id)
4280 {
4281 size_t i;
4283 for (i = 0; i < view->lines; i++) {
4284 struct blame *blame = view->line[i].data;
4286 if (!blame->commit)
4287 continue;
4289 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4290 return blame->commit;
4291 }
4293 {
4294 struct blame_commit *commit = calloc(1, sizeof(*commit));
4296 if (commit)
4297 string_ncopy(commit->id, id, SIZEOF_REV);
4298 return commit;
4299 }
4300 }
4302 static bool
4303 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4304 {
4305 const char *pos = *posref;
4307 *posref = NULL;
4308 pos = strchr(pos + 1, ' ');
4309 if (!pos || !isdigit(pos[1]))
4310 return FALSE;
4311 *number = atoi(pos + 1);
4312 if (*number < min || *number > max)
4313 return FALSE;
4315 *posref = pos;
4316 return TRUE;
4317 }
4319 static struct blame_commit *
4320 parse_blame_commit(struct view *view, const char *text, int *blamed)
4321 {
4322 struct blame_commit *commit;
4323 struct blame *blame;
4324 const char *pos = text + SIZEOF_REV - 2;
4325 size_t orig_lineno = 0;
4326 size_t lineno;
4327 size_t group;
4329 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4330 return NULL;
4332 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4333 !parse_number(&pos, &lineno, 1, view->lines) ||
4334 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4335 return NULL;
4337 commit = get_blame_commit(view, text);
4338 if (!commit)
4339 return NULL;
4341 *blamed += group;
4342 while (group--) {
4343 struct line *line = &view->line[lineno + group - 1];
4345 blame = line->data;
4346 blame->commit = commit;
4347 blame->lineno = orig_lineno + group - 1;
4348 line->dirty = 1;
4349 }
4351 return commit;
4352 }
4354 static bool
4355 blame_read_file(struct view *view, const char *line, bool *read_file)
4356 {
4357 if (!line) {
4358 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
4359 struct io io = {};
4361 if (view->lines == 0 && !view->parent)
4362 die("No blame exist for %s", view->vid);
4364 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
4365 report("Failed to load blame data");
4366 return TRUE;
4367 }
4369 done_io(view->pipe);
4370 view->io = io;
4371 *read_file = FALSE;
4372 return FALSE;
4374 } else {
4375 size_t linelen = strlen(line);
4376 struct blame *blame = malloc(sizeof(*blame) + linelen);
4378 if (!blame)
4379 return FALSE;
4381 blame->commit = NULL;
4382 strncpy(blame->text, line, linelen);
4383 blame->text[linelen] = 0;
4384 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4385 }
4386 }
4388 static bool
4389 match_blame_header(const char *name, char **line)
4390 {
4391 size_t namelen = strlen(name);
4392 bool matched = !strncmp(name, *line, namelen);
4394 if (matched)
4395 *line += namelen;
4397 return matched;
4398 }
4400 static bool
4401 blame_read(struct view *view, char *line)
4402 {
4403 static struct blame_commit *commit = NULL;
4404 static int blamed = 0;
4405 static bool read_file = TRUE;
4407 if (read_file)
4408 return blame_read_file(view, line, &read_file);
4410 if (!line) {
4411 /* Reset all! */
4412 commit = NULL;
4413 blamed = 0;
4414 read_file = TRUE;
4415 string_format(view->ref, "%s", view->vid);
4416 if (view_is_displayed(view)) {
4417 update_view_title(view);
4418 redraw_view_from(view, 0);
4419 }
4420 return TRUE;
4421 }
4423 if (!commit) {
4424 commit = parse_blame_commit(view, line, &blamed);
4425 string_format(view->ref, "%s %2d%%", view->vid,
4426 view->lines ? blamed * 100 / view->lines : 0);
4428 } else if (match_blame_header("author ", &line)) {
4429 commit->author = get_author(line);
4431 } else if (match_blame_header("author-time ", &line)) {
4432 commit->time = (time_t) atol(line);
4434 } else if (match_blame_header("author-tz ", &line)) {
4435 parse_timezone(&commit->time, line);
4437 } else if (match_blame_header("summary ", &line)) {
4438 string_ncopy(commit->title, line, strlen(line));
4440 } else if (match_blame_header("previous ", &line)) {
4441 commit->has_previous = TRUE;
4443 } else if (match_blame_header("filename ", &line)) {
4444 string_ncopy(commit->filename, line, strlen(line));
4445 commit = NULL;
4446 }
4448 return TRUE;
4449 }
4451 static bool
4452 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4453 {
4454 struct blame *blame = line->data;
4455 time_t *time = NULL;
4456 const char *id = NULL, *author = NULL;
4457 char text[SIZEOF_STR];
4459 if (blame->commit && *blame->commit->filename) {
4460 id = blame->commit->id;
4461 author = blame->commit->author;
4462 time = &blame->commit->time;
4463 }
4465 if (opt_date && draw_date(view, time))
4466 return TRUE;
4468 if (opt_author && draw_author(view, author))
4469 return TRUE;
4471 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4472 return TRUE;
4474 if (draw_lineno(view, lineno))
4475 return TRUE;
4477 string_expand(text, sizeof(text), blame->text, opt_tab_size);
4478 draw_text(view, LINE_DEFAULT, text, TRUE);
4479 return TRUE;
4480 }
4482 static bool
4483 check_blame_commit(struct blame *blame, bool check_null_id)
4484 {
4485 if (!blame->commit)
4486 report("Commit data not loaded yet");
4487 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4488 report("No commit exist for the selected line");
4489 else
4490 return TRUE;
4491 return FALSE;
4492 }
4494 static void
4495 setup_blame_parent_line(struct view *view, struct blame *blame)
4496 {
4497 const char *diff_tree_argv[] = {
4498 "git", "diff-tree", "-U0", blame->commit->id,
4499 "--", blame->commit->filename, NULL
4500 };
4501 struct io io = {};
4502 int parent_lineno = -1;
4503 int blamed_lineno = -1;
4504 char *line;
4506 if (!run_io(&io, diff_tree_argv, NULL, IO_RD))
4507 return;
4509 while ((line = io_get(&io, '\n', TRUE))) {
4510 if (*line == '@') {
4511 char *pos = strchr(line, '+');
4513 parent_lineno = atoi(line + 4);
4514 if (pos)
4515 blamed_lineno = atoi(pos + 1);
4517 } else if (*line == '+' && parent_lineno != -1) {
4518 if (blame->lineno == blamed_lineno - 1 &&
4519 !strcmp(blame->text, line + 1)) {
4520 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4521 break;
4522 }
4523 blamed_lineno++;
4524 }
4525 }
4527 done_io(&io);
4528 }
4530 static enum request
4531 blame_request(struct view *view, enum request request, struct line *line)
4532 {
4533 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4534 struct blame *blame = line->data;
4536 switch (request) {
4537 case REQ_VIEW_BLAME:
4538 if (check_blame_commit(blame, TRUE)) {
4539 string_copy(opt_ref, blame->commit->id);
4540 string_copy(opt_file, blame->commit->filename);
4541 if (blame->lineno)
4542 view->lineno = blame->lineno;
4543 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4544 }
4545 break;
4547 case REQ_PARENT:
4548 if (check_blame_commit(blame, TRUE) &&
4549 select_commit_parent(blame->commit->id, opt_ref,
4550 blame->commit->filename)) {
4551 string_copy(opt_file, blame->commit->filename);
4552 setup_blame_parent_line(view, blame);
4553 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4554 }
4555 break;
4557 case REQ_ENTER:
4558 if (!check_blame_commit(blame, FALSE))
4559 break;
4561 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4562 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4563 break;
4565 if (!strcmp(blame->commit->id, NULL_ID)) {
4566 struct view *diff = VIEW(REQ_VIEW_DIFF);
4567 const char *diff_index_argv[] = {
4568 "git", "diff-index", "--root", "--patch-with-stat",
4569 "-C", "-M", "HEAD", "--", view->vid, NULL
4570 };
4572 if (!blame->commit->has_previous) {
4573 diff_index_argv[1] = "diff";
4574 diff_index_argv[2] = "--no-color";
4575 diff_index_argv[6] = "--";
4576 diff_index_argv[7] = "/dev/null";
4577 }
4579 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4580 report("Failed to allocate diff command");
4581 break;
4582 }
4583 flags |= OPEN_PREPARED;
4584 }
4586 open_view(view, REQ_VIEW_DIFF, flags);
4587 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4588 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4589 break;
4591 default:
4592 return request;
4593 }
4595 return REQ_NONE;
4596 }
4598 static bool
4599 blame_grep(struct view *view, struct line *line)
4600 {
4601 struct blame *blame = line->data;
4602 struct blame_commit *commit = blame->commit;
4603 const char *text[] = {
4604 blame->text,
4605 commit ? commit->title : "",
4606 commit ? commit->id : "",
4607 commit && opt_author ? commit->author : "",
4608 commit && opt_date ? mkdate(&commit->time) : "",
4609 };
4611 return grep_text(view, text);
4612 }
4614 static void
4615 blame_select(struct view *view, struct line *line)
4616 {
4617 struct blame *blame = line->data;
4618 struct blame_commit *commit = blame->commit;
4620 if (!commit)
4621 return;
4623 if (!strcmp(commit->id, NULL_ID))
4624 string_ncopy(ref_commit, "HEAD", 4);
4625 else
4626 string_copy_rev(ref_commit, commit->id);
4627 }
4629 static struct view_ops blame_ops = {
4630 "line",
4631 NULL,
4632 blame_open,
4633 blame_read,
4634 blame_draw,
4635 blame_request,
4636 blame_grep,
4637 blame_select,
4638 };
4640 /*
4641 * Status backend
4642 */
4644 struct status {
4645 char status;
4646 struct {
4647 mode_t mode;
4648 char rev[SIZEOF_REV];
4649 char name[SIZEOF_STR];
4650 } old;
4651 struct {
4652 mode_t mode;
4653 char rev[SIZEOF_REV];
4654 char name[SIZEOF_STR];
4655 } new;
4656 };
4658 static char status_onbranch[SIZEOF_STR];
4659 static struct status stage_status;
4660 static enum line_type stage_line_type;
4661 static size_t stage_chunks;
4662 static int *stage_chunk;
4664 /* This should work even for the "On branch" line. */
4665 static inline bool
4666 status_has_none(struct view *view, struct line *line)
4667 {
4668 return line < view->line + view->lines && !line[1].data;
4669 }
4671 /* Get fields from the diff line:
4672 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4673 */
4674 static inline bool
4675 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4676 {
4677 const char *old_mode = buf + 1;
4678 const char *new_mode = buf + 8;
4679 const char *old_rev = buf + 15;
4680 const char *new_rev = buf + 56;
4681 const char *status = buf + 97;
4683 if (bufsize < 98 ||
4684 old_mode[-1] != ':' ||
4685 new_mode[-1] != ' ' ||
4686 old_rev[-1] != ' ' ||
4687 new_rev[-1] != ' ' ||
4688 status[-1] != ' ')
4689 return FALSE;
4691 file->status = *status;
4693 string_copy_rev(file->old.rev, old_rev);
4694 string_copy_rev(file->new.rev, new_rev);
4696 file->old.mode = strtoul(old_mode, NULL, 8);
4697 file->new.mode = strtoul(new_mode, NULL, 8);
4699 file->old.name[0] = file->new.name[0] = 0;
4701 return TRUE;
4702 }
4704 static bool
4705 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4706 {
4707 struct status *unmerged = NULL;
4708 char *buf;
4709 struct io io = {};
4711 if (!run_io(&io, argv, NULL, IO_RD))
4712 return FALSE;
4714 add_line_data(view, NULL, type);
4716 while ((buf = io_get(&io, 0, TRUE))) {
4717 struct status *file = unmerged;
4719 if (!file) {
4720 file = calloc(1, sizeof(*file));
4721 if (!file || !add_line_data(view, file, type))
4722 goto error_out;
4723 }
4725 /* Parse diff info part. */
4726 if (status) {
4727 file->status = status;
4728 if (status == 'A')
4729 string_copy(file->old.rev, NULL_ID);
4731 } else if (!file->status || file == unmerged) {
4732 if (!status_get_diff(file, buf, strlen(buf)))
4733 goto error_out;
4735 buf = io_get(&io, 0, TRUE);
4736 if (!buf)
4737 break;
4739 /* Collapse all modified entries that follow an
4740 * associated unmerged entry. */
4741 if (unmerged == file) {
4742 unmerged->status = 'U';
4743 unmerged = NULL;
4744 } else if (file->status == 'U') {
4745 unmerged = file;
4746 }
4747 }
4749 /* Grab the old name for rename/copy. */
4750 if (!*file->old.name &&
4751 (file->status == 'R' || file->status == 'C')) {
4752 string_ncopy(file->old.name, buf, strlen(buf));
4754 buf = io_get(&io, 0, TRUE);
4755 if (!buf)
4756 break;
4757 }
4759 /* git-ls-files just delivers a NUL separated list of
4760 * file names similar to the second half of the
4761 * git-diff-* output. */
4762 string_ncopy(file->new.name, buf, strlen(buf));
4763 if (!*file->old.name)
4764 string_copy(file->old.name, file->new.name);
4765 file = NULL;
4766 }
4768 if (io_error(&io)) {
4769 error_out:
4770 done_io(&io);
4771 return FALSE;
4772 }
4774 if (!view->line[view->lines - 1].data)
4775 add_line_data(view, NULL, LINE_STAT_NONE);
4777 done_io(&io);
4778 return TRUE;
4779 }
4781 /* Don't show unmerged entries in the staged section. */
4782 static const char *status_diff_index_argv[] = {
4783 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4784 "--cached", "-M", "HEAD", NULL
4785 };
4787 static const char *status_diff_files_argv[] = {
4788 "git", "diff-files", "-z", NULL
4789 };
4791 static const char *status_list_other_argv[] = {
4792 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4793 };
4795 static const char *status_list_no_head_argv[] = {
4796 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4797 };
4799 static const char *update_index_argv[] = {
4800 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4801 };
4803 /* Restore the previous line number to stay in the context or select a
4804 * line with something that can be updated. */
4805 static void
4806 status_restore(struct view *view)
4807 {
4808 if (view->p_lineno >= view->lines)
4809 view->p_lineno = view->lines - 1;
4810 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4811 view->p_lineno++;
4812 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4813 view->p_lineno--;
4815 /* If the above fails, always skip the "On branch" line. */
4816 if (view->p_lineno < view->lines)
4817 view->lineno = view->p_lineno;
4818 else
4819 view->lineno = 1;
4821 if (view->lineno < view->offset)
4822 view->offset = view->lineno;
4823 else if (view->offset + view->height <= view->lineno)
4824 view->offset = view->lineno - view->height + 1;
4826 view->p_restore = FALSE;
4827 }
4829 static void
4830 status_update_onbranch(void)
4831 {
4832 static const char *paths[][2] = {
4833 { "rebase-apply/rebasing", "Rebasing" },
4834 { "rebase-apply/applying", "Applying mailbox" },
4835 { "rebase-apply/", "Rebasing mailbox" },
4836 { "rebase-merge/interactive", "Interactive rebase" },
4837 { "rebase-merge/", "Rebase merge" },
4838 { "MERGE_HEAD", "Merging" },
4839 { "BISECT_LOG", "Bisecting" },
4840 { "HEAD", "On branch" },
4841 };
4842 char buf[SIZEOF_STR];
4843 struct stat stat;
4844 int i;
4846 if (is_initial_commit()) {
4847 string_copy(status_onbranch, "Initial commit");
4848 return;
4849 }
4851 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4852 char *head = opt_head;
4854 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4855 lstat(buf, &stat) < 0)
4856 continue;
4858 if (!*opt_head) {
4859 struct io io = {};
4861 if (string_format(buf, "%s/rebase-merge/head-name", opt_git_dir) &&
4862 io_open(&io, buf) &&
4863 io_read_buf(&io, buf, sizeof(buf))) {
4864 head = chomp_string(buf);
4865 if (!prefixcmp(head, "refs/heads/"))
4866 head += STRING_SIZE("refs/heads/");
4867 }
4868 }
4870 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4871 string_copy(status_onbranch, opt_head);
4872 return;
4873 }
4875 string_copy(status_onbranch, "Not currently on any branch");
4876 }
4878 /* First parse staged info using git-diff-index(1), then parse unstaged
4879 * info using git-diff-files(1), and finally untracked files using
4880 * git-ls-files(1). */
4881 static bool
4882 status_open(struct view *view)
4883 {
4884 reset_view(view);
4886 add_line_data(view, NULL, LINE_STAT_HEAD);
4887 status_update_onbranch();
4889 run_io_bg(update_index_argv);
4891 if (is_initial_commit()) {
4892 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4893 return FALSE;
4894 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4895 return FALSE;
4896 }
4898 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4899 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4900 return FALSE;
4902 /* Restore the exact position or use the specialized restore
4903 * mode? */
4904 if (!view->p_restore)
4905 status_restore(view);
4906 return TRUE;
4907 }
4909 static bool
4910 status_draw(struct view *view, struct line *line, unsigned int lineno)
4911 {
4912 struct status *status = line->data;
4913 enum line_type type;
4914 const char *text;
4916 if (!status) {
4917 switch (line->type) {
4918 case LINE_STAT_STAGED:
4919 type = LINE_STAT_SECTION;
4920 text = "Changes to be committed:";
4921 break;
4923 case LINE_STAT_UNSTAGED:
4924 type = LINE_STAT_SECTION;
4925 text = "Changed but not updated:";
4926 break;
4928 case LINE_STAT_UNTRACKED:
4929 type = LINE_STAT_SECTION;
4930 text = "Untracked files:";
4931 break;
4933 case LINE_STAT_NONE:
4934 type = LINE_DEFAULT;
4935 text = " (no files)";
4936 break;
4938 case LINE_STAT_HEAD:
4939 type = LINE_STAT_HEAD;
4940 text = status_onbranch;
4941 break;
4943 default:
4944 return FALSE;
4945 }
4946 } else {
4947 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4949 buf[0] = status->status;
4950 if (draw_text(view, line->type, buf, TRUE))
4951 return TRUE;
4952 type = LINE_DEFAULT;
4953 text = status->new.name;
4954 }
4956 draw_text(view, type, text, TRUE);
4957 return TRUE;
4958 }
4960 static enum request
4961 status_load_error(struct view *view, struct view *stage, const char *path)
4962 {
4963 if (displayed_views() == 2 || display[current_view] != view)
4964 maximize_view(view);
4965 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
4966 return REQ_NONE;
4967 }
4969 static enum request
4970 status_enter(struct view *view, struct line *line)
4971 {
4972 struct status *status = line->data;
4973 const char *oldpath = status ? status->old.name : NULL;
4974 /* Diffs for unmerged entries are empty when passing the new
4975 * path, so leave it empty. */
4976 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4977 const char *info;
4978 enum open_flags split;
4979 struct view *stage = VIEW(REQ_VIEW_STAGE);
4981 if (line->type == LINE_STAT_NONE ||
4982 (!status && line[1].type == LINE_STAT_NONE)) {
4983 report("No file to diff");
4984 return REQ_NONE;
4985 }
4987 switch (line->type) {
4988 case LINE_STAT_STAGED:
4989 if (is_initial_commit()) {
4990 const char *no_head_diff_argv[] = {
4991 "git", "diff", "--no-color", "--patch-with-stat",
4992 "--", "/dev/null", newpath, NULL
4993 };
4995 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4996 return status_load_error(view, stage, newpath);
4997 } else {
4998 const char *index_show_argv[] = {
4999 "git", "diff-index", "--root", "--patch-with-stat",
5000 "-C", "-M", "--cached", "HEAD", "--",
5001 oldpath, newpath, NULL
5002 };
5004 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
5005 return status_load_error(view, stage, newpath);
5006 }
5008 if (status)
5009 info = "Staged changes to %s";
5010 else
5011 info = "Staged changes";
5012 break;
5014 case LINE_STAT_UNSTAGED:
5015 {
5016 const char *files_show_argv[] = {
5017 "git", "diff-files", "--root", "--patch-with-stat",
5018 "-C", "-M", "--", oldpath, newpath, NULL
5019 };
5021 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
5022 return status_load_error(view, stage, newpath);
5023 if (status)
5024 info = "Unstaged changes to %s";
5025 else
5026 info = "Unstaged changes";
5027 break;
5028 }
5029 case LINE_STAT_UNTRACKED:
5030 if (!newpath) {
5031 report("No file to show");
5032 return REQ_NONE;
5033 }
5035 if (!suffixcmp(status->new.name, -1, "/")) {
5036 report("Cannot display a directory");
5037 return REQ_NONE;
5038 }
5040 if (!prepare_update_file(stage, newpath))
5041 return status_load_error(view, stage, newpath);
5042 info = "Untracked file %s";
5043 break;
5045 case LINE_STAT_HEAD:
5046 return REQ_NONE;
5048 default:
5049 die("line type %d not handled in switch", line->type);
5050 }
5052 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5053 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5054 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5055 if (status) {
5056 stage_status = *status;
5057 } else {
5058 memset(&stage_status, 0, sizeof(stage_status));
5059 }
5061 stage_line_type = line->type;
5062 stage_chunks = 0;
5063 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5064 }
5066 return REQ_NONE;
5067 }
5069 static bool
5070 status_exists(struct status *status, enum line_type type)
5071 {
5072 struct view *view = VIEW(REQ_VIEW_STATUS);
5073 unsigned long lineno;
5075 for (lineno = 0; lineno < view->lines; lineno++) {
5076 struct line *line = &view->line[lineno];
5077 struct status *pos = line->data;
5079 if (line->type != type)
5080 continue;
5081 if (!pos && (!status || !status->status) && line[1].data) {
5082 select_view_line(view, lineno);
5083 return TRUE;
5084 }
5085 if (pos && !strcmp(status->new.name, pos->new.name)) {
5086 select_view_line(view, lineno);
5087 return TRUE;
5088 }
5089 }
5091 return FALSE;
5092 }
5095 static bool
5096 status_update_prepare(struct io *io, enum line_type type)
5097 {
5098 const char *staged_argv[] = {
5099 "git", "update-index", "-z", "--index-info", NULL
5100 };
5101 const char *others_argv[] = {
5102 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5103 };
5105 switch (type) {
5106 case LINE_STAT_STAGED:
5107 return run_io(io, staged_argv, opt_cdup, IO_WR);
5109 case LINE_STAT_UNSTAGED:
5110 return run_io(io, others_argv, opt_cdup, IO_WR);
5112 case LINE_STAT_UNTRACKED:
5113 return run_io(io, others_argv, NULL, IO_WR);
5115 default:
5116 die("line type %d not handled in switch", type);
5117 return FALSE;
5118 }
5119 }
5121 static bool
5122 status_update_write(struct io *io, struct status *status, enum line_type type)
5123 {
5124 char buf[SIZEOF_STR];
5125 size_t bufsize = 0;
5127 switch (type) {
5128 case LINE_STAT_STAGED:
5129 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5130 status->old.mode,
5131 status->old.rev,
5132 status->old.name, 0))
5133 return FALSE;
5134 break;
5136 case LINE_STAT_UNSTAGED:
5137 case LINE_STAT_UNTRACKED:
5138 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5139 return FALSE;
5140 break;
5142 default:
5143 die("line type %d not handled in switch", type);
5144 }
5146 return io_write(io, buf, bufsize);
5147 }
5149 static bool
5150 status_update_file(struct status *status, enum line_type type)
5151 {
5152 struct io io = {};
5153 bool result;
5155 if (!status_update_prepare(&io, type))
5156 return FALSE;
5158 result = status_update_write(&io, status, type);
5159 return done_io(&io) && result;
5160 }
5162 static bool
5163 status_update_files(struct view *view, struct line *line)
5164 {
5165 char buf[sizeof(view->ref)];
5166 struct io io = {};
5167 bool result = TRUE;
5168 struct line *pos = view->line + view->lines;
5169 int files = 0;
5170 int file, done;
5171 int cursor_y, cursor_x;
5173 if (!status_update_prepare(&io, line->type))
5174 return FALSE;
5176 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5177 files++;
5179 string_copy(buf, view->ref);
5180 getsyx(cursor_y, cursor_x);
5181 for (file = 0, done = 5; result && file < files; line++, file++) {
5182 int almost_done = file * 100 / files;
5184 if (almost_done > done) {
5185 done = almost_done;
5186 string_format(view->ref, "updating file %u of %u (%d%% done)",
5187 file, files, done);
5188 update_view_title(view);
5189 setsyx(cursor_y, cursor_x);
5190 doupdate();
5191 }
5192 result = status_update_write(&io, line->data, line->type);
5193 }
5194 string_copy(view->ref, buf);
5196 return done_io(&io) && result;
5197 }
5199 static bool
5200 status_update(struct view *view)
5201 {
5202 struct line *line = &view->line[view->lineno];
5204 assert(view->lines);
5206 if (!line->data) {
5207 /* This should work even for the "On branch" line. */
5208 if (line < view->line + view->lines && !line[1].data) {
5209 report("Nothing to update");
5210 return FALSE;
5211 }
5213 if (!status_update_files(view, line + 1)) {
5214 report("Failed to update file status");
5215 return FALSE;
5216 }
5218 } else if (!status_update_file(line->data, line->type)) {
5219 report("Failed to update file status");
5220 return FALSE;
5221 }
5223 return TRUE;
5224 }
5226 static bool
5227 status_revert(struct status *status, enum line_type type, bool has_none)
5228 {
5229 if (!status || type != LINE_STAT_UNSTAGED) {
5230 if (type == LINE_STAT_STAGED) {
5231 report("Cannot revert changes to staged files");
5232 } else if (type == LINE_STAT_UNTRACKED) {
5233 report("Cannot revert changes to untracked files");
5234 } else if (has_none) {
5235 report("Nothing to revert");
5236 } else {
5237 report("Cannot revert changes to multiple files");
5238 }
5239 return FALSE;
5241 } else {
5242 char mode[10] = "100644";
5243 const char *reset_argv[] = {
5244 "git", "update-index", "--cacheinfo", mode,
5245 status->old.rev, status->old.name, NULL
5246 };
5247 const char *checkout_argv[] = {
5248 "git", "checkout", "--", status->old.name, NULL
5249 };
5251 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
5252 return FALSE;
5253 string_format(mode, "%o", status->old.mode);
5254 return (status->status != 'U' || run_io_fg(reset_argv, opt_cdup)) &&
5255 run_io_fg(checkout_argv, opt_cdup);
5256 }
5257 }
5259 static enum request
5260 status_request(struct view *view, enum request request, struct line *line)
5261 {
5262 struct status *status = line->data;
5264 switch (request) {
5265 case REQ_STATUS_UPDATE:
5266 if (!status_update(view))
5267 return REQ_NONE;
5268 break;
5270 case REQ_STATUS_REVERT:
5271 if (!status_revert(status, line->type, status_has_none(view, line)))
5272 return REQ_NONE;
5273 break;
5275 case REQ_STATUS_MERGE:
5276 if (!status || status->status != 'U') {
5277 report("Merging only possible for files with unmerged status ('U').");
5278 return REQ_NONE;
5279 }
5280 open_mergetool(status->new.name);
5281 break;
5283 case REQ_EDIT:
5284 if (!status)
5285 return request;
5286 if (status->status == 'D') {
5287 report("File has been deleted.");
5288 return REQ_NONE;
5289 }
5291 open_editor(status->status != '?', status->new.name);
5292 break;
5294 case REQ_VIEW_BLAME:
5295 if (status) {
5296 string_copy(opt_file, status->new.name);
5297 opt_ref[0] = 0;
5298 }
5299 return request;
5301 case REQ_ENTER:
5302 /* After returning the status view has been split to
5303 * show the stage view. No further reloading is
5304 * necessary. */
5305 return status_enter(view, line);
5307 case REQ_REFRESH:
5308 /* Simply reload the view. */
5309 break;
5311 default:
5312 return request;
5313 }
5315 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5317 return REQ_NONE;
5318 }
5320 static void
5321 status_select(struct view *view, struct line *line)
5322 {
5323 struct status *status = line->data;
5324 char file[SIZEOF_STR] = "all files";
5325 const char *text;
5326 const char *key;
5328 if (status && !string_format(file, "'%s'", status->new.name))
5329 return;
5331 if (!status && line[1].type == LINE_STAT_NONE)
5332 line++;
5334 switch (line->type) {
5335 case LINE_STAT_STAGED:
5336 text = "Press %s to unstage %s for commit";
5337 break;
5339 case LINE_STAT_UNSTAGED:
5340 text = "Press %s to stage %s for commit";
5341 break;
5343 case LINE_STAT_UNTRACKED:
5344 text = "Press %s to stage %s for addition";
5345 break;
5347 case LINE_STAT_HEAD:
5348 case LINE_STAT_NONE:
5349 text = "Nothing to update";
5350 break;
5352 default:
5353 die("line type %d not handled in switch", line->type);
5354 }
5356 if (status && status->status == 'U') {
5357 text = "Press %s to resolve conflict in %s";
5358 key = get_key(REQ_STATUS_MERGE);
5360 } else {
5361 key = get_key(REQ_STATUS_UPDATE);
5362 }
5364 string_format(view->ref, text, key, file);
5365 }
5367 static bool
5368 status_grep(struct view *view, struct line *line)
5369 {
5370 struct status *status = line->data;
5372 if (status) {
5373 const char buf[2] = { status->status, 0 };
5374 const char *text[] = { status->new.name, buf, NULL };
5376 return grep_text(view, text);
5377 }
5379 return FALSE;
5380 }
5382 static struct view_ops status_ops = {
5383 "file",
5384 NULL,
5385 status_open,
5386 NULL,
5387 status_draw,
5388 status_request,
5389 status_grep,
5390 status_select,
5391 };
5394 static bool
5395 stage_diff_write(struct io *io, struct line *line, struct line *end)
5396 {
5397 while (line < end) {
5398 if (!io_write(io, line->data, strlen(line->data)) ||
5399 !io_write(io, "\n", 1))
5400 return FALSE;
5401 line++;
5402 if (line->type == LINE_DIFF_CHUNK ||
5403 line->type == LINE_DIFF_HEADER)
5404 break;
5405 }
5407 return TRUE;
5408 }
5410 static struct line *
5411 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5412 {
5413 for (; view->line < line; line--)
5414 if (line->type == type)
5415 return line;
5417 return NULL;
5418 }
5420 static bool
5421 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5422 {
5423 const char *apply_argv[SIZEOF_ARG] = {
5424 "git", "apply", "--whitespace=nowarn", NULL
5425 };
5426 struct line *diff_hdr;
5427 struct io io = {};
5428 int argc = 3;
5430 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5431 if (!diff_hdr)
5432 return FALSE;
5434 if (!revert)
5435 apply_argv[argc++] = "--cached";
5436 if (revert || stage_line_type == LINE_STAT_STAGED)
5437 apply_argv[argc++] = "-R";
5438 apply_argv[argc++] = "-";
5439 apply_argv[argc++] = NULL;
5440 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5441 return FALSE;
5443 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5444 !stage_diff_write(&io, chunk, view->line + view->lines))
5445 chunk = NULL;
5447 done_io(&io);
5448 run_io_bg(update_index_argv);
5450 return chunk ? TRUE : FALSE;
5451 }
5453 static bool
5454 stage_update(struct view *view, struct line *line)
5455 {
5456 struct line *chunk = NULL;
5458 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5459 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5461 if (chunk) {
5462 if (!stage_apply_chunk(view, chunk, FALSE)) {
5463 report("Failed to apply chunk");
5464 return FALSE;
5465 }
5467 } else if (!stage_status.status) {
5468 view = VIEW(REQ_VIEW_STATUS);
5470 for (line = view->line; line < view->line + view->lines; line++)
5471 if (line->type == stage_line_type)
5472 break;
5474 if (!status_update_files(view, line + 1)) {
5475 report("Failed to update files");
5476 return FALSE;
5477 }
5479 } else if (!status_update_file(&stage_status, stage_line_type)) {
5480 report("Failed to update file");
5481 return FALSE;
5482 }
5484 return TRUE;
5485 }
5487 static bool
5488 stage_revert(struct view *view, struct line *line)
5489 {
5490 struct line *chunk = NULL;
5492 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5493 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5495 if (chunk) {
5496 if (!prompt_yesno("Are you sure you want to revert changes?"))
5497 return FALSE;
5499 if (!stage_apply_chunk(view, chunk, TRUE)) {
5500 report("Failed to revert chunk");
5501 return FALSE;
5502 }
5503 return TRUE;
5505 } else {
5506 return status_revert(stage_status.status ? &stage_status : NULL,
5507 stage_line_type, FALSE);
5508 }
5509 }
5512 static void
5513 stage_next(struct view *view, struct line *line)
5514 {
5515 int i;
5517 if (!stage_chunks) {
5518 static size_t alloc = 0;
5519 int *tmp;
5521 for (line = view->line; line < view->line + view->lines; line++) {
5522 if (line->type != LINE_DIFF_CHUNK)
5523 continue;
5525 tmp = realloc_items(stage_chunk, &alloc,
5526 stage_chunks, sizeof(*tmp));
5527 if (!tmp) {
5528 report("Allocation failure");
5529 return;
5530 }
5532 stage_chunk = tmp;
5533 stage_chunk[stage_chunks++] = line - view->line;
5534 }
5535 }
5537 for (i = 0; i < stage_chunks; i++) {
5538 if (stage_chunk[i] > view->lineno) {
5539 do_scroll_view(view, stage_chunk[i] - view->lineno);
5540 report("Chunk %d of %d", i + 1, stage_chunks);
5541 return;
5542 }
5543 }
5545 report("No next chunk found");
5546 }
5548 static enum request
5549 stage_request(struct view *view, enum request request, struct line *line)
5550 {
5551 switch (request) {
5552 case REQ_STATUS_UPDATE:
5553 if (!stage_update(view, line))
5554 return REQ_NONE;
5555 break;
5557 case REQ_STATUS_REVERT:
5558 if (!stage_revert(view, line))
5559 return REQ_NONE;
5560 break;
5562 case REQ_STAGE_NEXT:
5563 if (stage_line_type == LINE_STAT_UNTRACKED) {
5564 report("File is untracked; press %s to add",
5565 get_key(REQ_STATUS_UPDATE));
5566 return REQ_NONE;
5567 }
5568 stage_next(view, line);
5569 return REQ_NONE;
5571 case REQ_EDIT:
5572 if (!stage_status.new.name[0])
5573 return request;
5574 if (stage_status.status == 'D') {
5575 report("File has been deleted.");
5576 return REQ_NONE;
5577 }
5579 open_editor(stage_status.status != '?', stage_status.new.name);
5580 break;
5582 case REQ_REFRESH:
5583 /* Reload everything ... */
5584 break;
5586 case REQ_VIEW_BLAME:
5587 if (stage_status.new.name[0]) {
5588 string_copy(opt_file, stage_status.new.name);
5589 opt_ref[0] = 0;
5590 }
5591 return request;
5593 case REQ_ENTER:
5594 return pager_request(view, request, line);
5596 default:
5597 return request;
5598 }
5600 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5601 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5603 /* Check whether the staged entry still exists, and close the
5604 * stage view if it doesn't. */
5605 if (!status_exists(&stage_status, stage_line_type)) {
5606 status_restore(VIEW(REQ_VIEW_STATUS));
5607 return REQ_VIEW_CLOSE;
5608 }
5610 if (stage_line_type == LINE_STAT_UNTRACKED) {
5611 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5612 report("Cannot display a directory");
5613 return REQ_NONE;
5614 }
5616 if (!prepare_update_file(view, stage_status.new.name)) {
5617 report("Failed to open file: %s", strerror(errno));
5618 return REQ_NONE;
5619 }
5620 }
5621 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5623 return REQ_NONE;
5624 }
5626 static struct view_ops stage_ops = {
5627 "line",
5628 NULL,
5629 NULL,
5630 pager_read,
5631 pager_draw,
5632 stage_request,
5633 pager_grep,
5634 pager_select,
5635 };
5638 /*
5639 * Revision graph
5640 */
5642 struct commit {
5643 char id[SIZEOF_REV]; /* SHA1 ID. */
5644 char title[128]; /* First line of the commit message. */
5645 const char *author; /* Author of the commit. */
5646 time_t time; /* Date from the author ident. */
5647 struct ref **refs; /* Repository references. */
5648 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5649 size_t graph_size; /* The width of the graph array. */
5650 bool has_parents; /* Rewritten --parents seen. */
5651 };
5653 /* Size of rev graph with no "padding" columns */
5654 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5656 struct rev_graph {
5657 struct rev_graph *prev, *next, *parents;
5658 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5659 size_t size;
5660 struct commit *commit;
5661 size_t pos;
5662 unsigned int boundary:1;
5663 };
5665 /* Parents of the commit being visualized. */
5666 static struct rev_graph graph_parents[4];
5668 /* The current stack of revisions on the graph. */
5669 static struct rev_graph graph_stacks[4] = {
5670 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5671 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5672 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5673 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5674 };
5676 static inline bool
5677 graph_parent_is_merge(struct rev_graph *graph)
5678 {
5679 return graph->parents->size > 1;
5680 }
5682 static inline void
5683 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5684 {
5685 struct commit *commit = graph->commit;
5687 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5688 commit->graph[commit->graph_size++] = symbol;
5689 }
5691 static void
5692 clear_rev_graph(struct rev_graph *graph)
5693 {
5694 graph->boundary = 0;
5695 graph->size = graph->pos = 0;
5696 graph->commit = NULL;
5697 memset(graph->parents, 0, sizeof(*graph->parents));
5698 }
5700 static void
5701 done_rev_graph(struct rev_graph *graph)
5702 {
5703 if (graph_parent_is_merge(graph) &&
5704 graph->pos < graph->size - 1 &&
5705 graph->next->size == graph->size + graph->parents->size - 1) {
5706 size_t i = graph->pos + graph->parents->size - 1;
5708 graph->commit->graph_size = i * 2;
5709 while (i < graph->next->size - 1) {
5710 append_to_rev_graph(graph, ' ');
5711 append_to_rev_graph(graph, '\\');
5712 i++;
5713 }
5714 }
5716 clear_rev_graph(graph);
5717 }
5719 static void
5720 push_rev_graph(struct rev_graph *graph, const char *parent)
5721 {
5722 int i;
5724 /* "Collapse" duplicate parents lines.
5725 *
5726 * FIXME: This needs to also update update the drawn graph but
5727 * for now it just serves as a method for pruning graph lines. */
5728 for (i = 0; i < graph->size; i++)
5729 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5730 return;
5732 if (graph->size < SIZEOF_REVITEMS) {
5733 string_copy_rev(graph->rev[graph->size++], parent);
5734 }
5735 }
5737 static chtype
5738 get_rev_graph_symbol(struct rev_graph *graph)
5739 {
5740 chtype symbol;
5742 if (graph->boundary)
5743 symbol = REVGRAPH_BOUND;
5744 else if (graph->parents->size == 0)
5745 symbol = REVGRAPH_INIT;
5746 else if (graph_parent_is_merge(graph))
5747 symbol = REVGRAPH_MERGE;
5748 else if (graph->pos >= graph->size)
5749 symbol = REVGRAPH_BRANCH;
5750 else
5751 symbol = REVGRAPH_COMMIT;
5753 return symbol;
5754 }
5756 static void
5757 draw_rev_graph(struct rev_graph *graph)
5758 {
5759 struct rev_filler {
5760 chtype separator, line;
5761 };
5762 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5763 static struct rev_filler fillers[] = {
5764 { ' ', '|' },
5765 { '`', '.' },
5766 { '\'', ' ' },
5767 { '/', ' ' },
5768 };
5769 chtype symbol = get_rev_graph_symbol(graph);
5770 struct rev_filler *filler;
5771 size_t i;
5773 if (opt_line_graphics)
5774 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5776 filler = &fillers[DEFAULT];
5778 for (i = 0; i < graph->pos; i++) {
5779 append_to_rev_graph(graph, filler->line);
5780 if (graph_parent_is_merge(graph->prev) &&
5781 graph->prev->pos == i)
5782 filler = &fillers[RSHARP];
5784 append_to_rev_graph(graph, filler->separator);
5785 }
5787 /* Place the symbol for this revision. */
5788 append_to_rev_graph(graph, symbol);
5790 if (graph->prev->size > graph->size)
5791 filler = &fillers[RDIAG];
5792 else
5793 filler = &fillers[DEFAULT];
5795 i++;
5797 for (; i < graph->size; i++) {
5798 append_to_rev_graph(graph, filler->separator);
5799 append_to_rev_graph(graph, filler->line);
5800 if (graph_parent_is_merge(graph->prev) &&
5801 i < graph->prev->pos + graph->parents->size)
5802 filler = &fillers[RSHARP];
5803 if (graph->prev->size > graph->size)
5804 filler = &fillers[LDIAG];
5805 }
5807 if (graph->prev->size > graph->size) {
5808 append_to_rev_graph(graph, filler->separator);
5809 if (filler->line != ' ')
5810 append_to_rev_graph(graph, filler->line);
5811 }
5812 }
5814 /* Prepare the next rev graph */
5815 static void
5816 prepare_rev_graph(struct rev_graph *graph)
5817 {
5818 size_t i;
5820 /* First, traverse all lines of revisions up to the active one. */
5821 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5822 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5823 break;
5825 push_rev_graph(graph->next, graph->rev[graph->pos]);
5826 }
5828 /* Interleave the new revision parent(s). */
5829 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5830 push_rev_graph(graph->next, graph->parents->rev[i]);
5832 /* Lastly, put any remaining revisions. */
5833 for (i = graph->pos + 1; i < graph->size; i++)
5834 push_rev_graph(graph->next, graph->rev[i]);
5835 }
5837 static void
5838 update_rev_graph(struct view *view, struct rev_graph *graph)
5839 {
5840 /* If this is the finalizing update ... */
5841 if (graph->commit)
5842 prepare_rev_graph(graph);
5844 /* Graph visualization needs a one rev look-ahead,
5845 * so the first update doesn't visualize anything. */
5846 if (!graph->prev->commit)
5847 return;
5849 if (view->lines > 2)
5850 view->line[view->lines - 3].dirty = 1;
5851 if (view->lines > 1)
5852 view->line[view->lines - 2].dirty = 1;
5853 draw_rev_graph(graph->prev);
5854 done_rev_graph(graph->prev->prev);
5855 }
5858 /*
5859 * Main view backend
5860 */
5862 static const char *main_argv[SIZEOF_ARG] = {
5863 "git", "log", "--no-color", "--pretty=raw", "--parents",
5864 "--topo-order", "%(head)", NULL
5865 };
5867 static bool
5868 main_draw(struct view *view, struct line *line, unsigned int lineno)
5869 {
5870 struct commit *commit = line->data;
5872 if (!commit->author)
5873 return FALSE;
5875 if (opt_date && draw_date(view, &commit->time))
5876 return TRUE;
5878 if (opt_author && draw_author(view, commit->author))
5879 return TRUE;
5881 if (opt_rev_graph && commit->graph_size &&
5882 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5883 return TRUE;
5885 if (opt_show_refs && commit->refs) {
5886 size_t i = 0;
5888 do {
5889 enum line_type type;
5891 if (commit->refs[i]->head)
5892 type = LINE_MAIN_HEAD;
5893 else if (commit->refs[i]->ltag)
5894 type = LINE_MAIN_LOCAL_TAG;
5895 else if (commit->refs[i]->tag)
5896 type = LINE_MAIN_TAG;
5897 else if (commit->refs[i]->tracked)
5898 type = LINE_MAIN_TRACKED;
5899 else if (commit->refs[i]->remote)
5900 type = LINE_MAIN_REMOTE;
5901 else
5902 type = LINE_MAIN_REF;
5904 if (draw_text(view, type, "[", TRUE) ||
5905 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5906 draw_text(view, type, "]", TRUE))
5907 return TRUE;
5909 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5910 return TRUE;
5911 } while (commit->refs[i++]->next);
5912 }
5914 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5915 return TRUE;
5916 }
5918 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5919 static bool
5920 main_read(struct view *view, char *line)
5921 {
5922 static struct rev_graph *graph = graph_stacks;
5923 enum line_type type;
5924 struct commit *commit;
5926 if (!line) {
5927 int i;
5929 if (!view->lines && !view->parent)
5930 die("No revisions match the given arguments.");
5931 if (view->lines > 0) {
5932 commit = view->line[view->lines - 1].data;
5933 view->line[view->lines - 1].dirty = 1;
5934 if (!commit->author) {
5935 view->lines--;
5936 free(commit);
5937 graph->commit = NULL;
5938 }
5939 }
5940 update_rev_graph(view, graph);
5942 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5943 clear_rev_graph(&graph_stacks[i]);
5944 return TRUE;
5945 }
5947 type = get_line_type(line);
5948 if (type == LINE_COMMIT) {
5949 commit = calloc(1, sizeof(struct commit));
5950 if (!commit)
5951 return FALSE;
5953 line += STRING_SIZE("commit ");
5954 if (*line == '-') {
5955 graph->boundary = 1;
5956 line++;
5957 }
5959 string_copy_rev(commit->id, line);
5960 commit->refs = get_refs(commit->id);
5961 graph->commit = commit;
5962 add_line_data(view, commit, LINE_MAIN_COMMIT);
5964 while ((line = strchr(line, ' '))) {
5965 line++;
5966 push_rev_graph(graph->parents, line);
5967 commit->has_parents = TRUE;
5968 }
5969 return TRUE;
5970 }
5972 if (!view->lines)
5973 return TRUE;
5974 commit = view->line[view->lines - 1].data;
5976 switch (type) {
5977 case LINE_PARENT:
5978 if (commit->has_parents)
5979 break;
5980 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5981 break;
5983 case LINE_AUTHOR:
5984 parse_author_line(line + STRING_SIZE("author "),
5985 &commit->author, &commit->time);
5986 update_rev_graph(view, graph);
5987 graph = graph->next;
5988 break;
5990 default:
5991 /* Fill in the commit title if it has not already been set. */
5992 if (commit->title[0])
5993 break;
5995 /* Require titles to start with a non-space character at the
5996 * offset used by git log. */
5997 if (strncmp(line, " ", 4))
5998 break;
5999 line += 4;
6000 /* Well, if the title starts with a whitespace character,
6001 * try to be forgiving. Otherwise we end up with no title. */
6002 while (isspace(*line))
6003 line++;
6004 if (*line == '\0')
6005 break;
6006 /* FIXME: More graceful handling of titles; append "..." to
6007 * shortened titles, etc. */
6009 string_expand(commit->title, sizeof(commit->title), line, 1);
6010 view->line[view->lines - 1].dirty = 1;
6011 }
6013 return TRUE;
6014 }
6016 static enum request
6017 main_request(struct view *view, enum request request, struct line *line)
6018 {
6019 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
6021 switch (request) {
6022 case REQ_ENTER:
6023 open_view(view, REQ_VIEW_DIFF, flags);
6024 break;
6025 case REQ_REFRESH:
6026 load_refs();
6027 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6028 break;
6029 default:
6030 return request;
6031 }
6033 return REQ_NONE;
6034 }
6036 static bool
6037 grep_refs(struct ref **refs, regex_t *regex)
6038 {
6039 regmatch_t pmatch;
6040 size_t i = 0;
6042 if (!opt_show_refs || !refs)
6043 return FALSE;
6044 do {
6045 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6046 return TRUE;
6047 } while (refs[i++]->next);
6049 return FALSE;
6050 }
6052 static bool
6053 main_grep(struct view *view, struct line *line)
6054 {
6055 struct commit *commit = line->data;
6056 const char *text[] = {
6057 commit->title,
6058 opt_author ? commit->author : "",
6059 opt_date ? mkdate(&commit->time) : "",
6060 NULL
6061 };
6063 return grep_text(view, text) || grep_refs(commit->refs, view->regex);
6064 }
6066 static void
6067 main_select(struct view *view, struct line *line)
6068 {
6069 struct commit *commit = line->data;
6071 string_copy_rev(view->ref, commit->id);
6072 string_copy_rev(ref_commit, view->ref);
6073 }
6075 static struct view_ops main_ops = {
6076 "commit",
6077 main_argv,
6078 NULL,
6079 main_read,
6080 main_draw,
6081 main_request,
6082 main_grep,
6083 main_select,
6084 };
6087 /*
6088 * Unicode / UTF-8 handling
6089 *
6090 * NOTE: Much of the following code for dealing with Unicode is derived from
6091 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
6092 * src/intl/charset.c from the UTF-8 branch commit elinks-0.11.0-g31f2c28.
6093 */
6095 static inline int
6096 unicode_width(unsigned long c)
6097 {
6098 if (c >= 0x1100 &&
6099 (c <= 0x115f /* Hangul Jamo */
6100 || c == 0x2329
6101 || c == 0x232a
6102 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
6103 /* CJK ... Yi */
6104 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
6105 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
6106 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
6107 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
6108 || (c >= 0xffe0 && c <= 0xffe6)
6109 || (c >= 0x20000 && c <= 0x2fffd)
6110 || (c >= 0x30000 && c <= 0x3fffd)))
6111 return 2;
6113 if (c == '\t')
6114 return opt_tab_size;
6116 return 1;
6117 }
6119 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
6120 * Illegal bytes are set one. */
6121 static const unsigned char utf8_bytes[256] = {
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 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,
6125 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,
6126 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,
6127 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,
6128 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,
6129 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,
6130 };
6132 /* Decode UTF-8 multi-byte representation into a Unicode character. */
6133 static inline unsigned long
6134 utf8_to_unicode(const char *string, size_t length)
6135 {
6136 unsigned long unicode;
6138 switch (length) {
6139 case 1:
6140 unicode = string[0];
6141 break;
6142 case 2:
6143 unicode = (string[0] & 0x1f) << 6;
6144 unicode += (string[1] & 0x3f);
6145 break;
6146 case 3:
6147 unicode = (string[0] & 0x0f) << 12;
6148 unicode += ((string[1] & 0x3f) << 6);
6149 unicode += (string[2] & 0x3f);
6150 break;
6151 case 4:
6152 unicode = (string[0] & 0x0f) << 18;
6153 unicode += ((string[1] & 0x3f) << 12);
6154 unicode += ((string[2] & 0x3f) << 6);
6155 unicode += (string[3] & 0x3f);
6156 break;
6157 case 5:
6158 unicode = (string[0] & 0x0f) << 24;
6159 unicode += ((string[1] & 0x3f) << 18);
6160 unicode += ((string[2] & 0x3f) << 12);
6161 unicode += ((string[3] & 0x3f) << 6);
6162 unicode += (string[4] & 0x3f);
6163 break;
6164 case 6:
6165 unicode = (string[0] & 0x01) << 30;
6166 unicode += ((string[1] & 0x3f) << 24);
6167 unicode += ((string[2] & 0x3f) << 18);
6168 unicode += ((string[3] & 0x3f) << 12);
6169 unicode += ((string[4] & 0x3f) << 6);
6170 unicode += (string[5] & 0x3f);
6171 break;
6172 default:
6173 die("Invalid Unicode length");
6174 }
6176 /* Invalid characters could return the special 0xfffd value but NUL
6177 * should be just as good. */
6178 return unicode > 0xffff ? 0 : unicode;
6179 }
6181 /* Calculates how much of string can be shown within the given maximum width
6182 * and sets trimmed parameter to non-zero value if all of string could not be
6183 * shown. If the reserve flag is TRUE, it will reserve at least one
6184 * trailing character, which can be useful when drawing a delimiter.
6185 *
6186 * Returns the number of bytes to output from string to satisfy max_width. */
6187 static size_t
6188 utf8_length(const char **start, size_t skip, int *width, size_t max_width, int *trimmed, bool reserve)
6189 {
6190 const char *string = *start;
6191 const char *end = strchr(string, '\0');
6192 unsigned char last_bytes = 0;
6193 size_t last_ucwidth = 0;
6195 *width = 0;
6196 *trimmed = 0;
6198 while (string < end) {
6199 int c = *(unsigned char *) string;
6200 unsigned char bytes = utf8_bytes[c];
6201 size_t ucwidth;
6202 unsigned long unicode;
6204 if (string + bytes > end)
6205 break;
6207 /* Change representation to figure out whether
6208 * it is a single- or double-width character. */
6210 unicode = utf8_to_unicode(string, bytes);
6211 /* FIXME: Graceful handling of invalid Unicode character. */
6212 if (!unicode)
6213 break;
6215 ucwidth = unicode_width(unicode);
6216 if (skip > 0) {
6217 skip -= ucwidth <= skip ? ucwidth : skip;
6218 *start += bytes;
6219 }
6220 *width += ucwidth;
6221 if (*width > max_width) {
6222 *trimmed = 1;
6223 *width -= ucwidth;
6224 if (reserve && *width == max_width) {
6225 string -= last_bytes;
6226 *width -= last_ucwidth;
6227 }
6228 break;
6229 }
6231 string += bytes;
6232 last_bytes = ucwidth ? bytes : 0;
6233 last_ucwidth = ucwidth;
6234 }
6236 return string - *start;
6237 }
6240 /*
6241 * Status management
6242 */
6244 /* Whether or not the curses interface has been initialized. */
6245 static bool cursed = FALSE;
6247 /* Terminal hacks and workarounds. */
6248 static bool use_scroll_redrawwin;
6249 static bool use_scroll_status_wclear;
6251 /* The status window is used for polling keystrokes. */
6252 static WINDOW *status_win;
6254 /* Reading from the prompt? */
6255 static bool input_mode = FALSE;
6257 static bool status_empty = FALSE;
6259 /* Update status and title window. */
6260 static void
6261 report(const char *msg, ...)
6262 {
6263 struct view *view = display[current_view];
6265 if (input_mode)
6266 return;
6268 if (!view) {
6269 char buf[SIZEOF_STR];
6270 va_list args;
6272 va_start(args, msg);
6273 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6274 buf[sizeof(buf) - 1] = 0;
6275 buf[sizeof(buf) - 2] = '.';
6276 buf[sizeof(buf) - 3] = '.';
6277 buf[sizeof(buf) - 4] = '.';
6278 }
6279 va_end(args);
6280 die("%s", buf);
6281 }
6283 if (!status_empty || *msg) {
6284 va_list args;
6286 va_start(args, msg);
6288 wmove(status_win, 0, 0);
6289 if (view->has_scrolled && use_scroll_status_wclear)
6290 wclear(status_win);
6291 if (*msg) {
6292 vwprintw(status_win, msg, args);
6293 status_empty = FALSE;
6294 } else {
6295 status_empty = TRUE;
6296 }
6297 wclrtoeol(status_win);
6298 wnoutrefresh(status_win);
6300 va_end(args);
6301 }
6303 update_view_title(view);
6304 }
6306 /* Controls when nodelay should be in effect when polling user input. */
6307 static void
6308 set_nonblocking_input(bool loading)
6309 {
6310 static unsigned int loading_views;
6312 if ((loading == FALSE && loading_views-- == 1) ||
6313 (loading == TRUE && loading_views++ == 0))
6314 nodelay(status_win, loading);
6315 }
6317 static void
6318 init_display(void)
6319 {
6320 const char *term;
6321 int x, y;
6323 /* Initialize the curses library */
6324 if (isatty(STDIN_FILENO)) {
6325 cursed = !!initscr();
6326 opt_tty = stdin;
6327 } else {
6328 /* Leave stdin and stdout alone when acting as a pager. */
6329 opt_tty = fopen("/dev/tty", "r+");
6330 if (!opt_tty)
6331 die("Failed to open /dev/tty");
6332 cursed = !!newterm(NULL, opt_tty, opt_tty);
6333 }
6335 if (!cursed)
6336 die("Failed to initialize curses");
6338 nonl(); /* Disable conversion and detect newlines from input. */
6339 cbreak(); /* Take input chars one at a time, no wait for \n */
6340 noecho(); /* Don't echo input */
6341 leaveok(stdscr, FALSE);
6343 if (has_colors())
6344 init_colors();
6346 getmaxyx(stdscr, y, x);
6347 status_win = newwin(1, 0, y - 1, 0);
6348 if (!status_win)
6349 die("Failed to create status window");
6351 /* Enable keyboard mapping */
6352 keypad(status_win, TRUE);
6353 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6355 TABSIZE = opt_tab_size;
6356 if (opt_line_graphics) {
6357 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
6358 }
6360 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6361 if (term && !strcmp(term, "gnome-terminal")) {
6362 /* In the gnome-terminal-emulator, the message from
6363 * scrolling up one line when impossible followed by
6364 * scrolling down one line causes corruption of the
6365 * status line. This is fixed by calling wclear. */
6366 use_scroll_status_wclear = TRUE;
6367 use_scroll_redrawwin = FALSE;
6369 } else if (term && !strcmp(term, "xrvt-xpm")) {
6370 /* No problems with full optimizations in xrvt-(unicode)
6371 * and aterm. */
6372 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6374 } else {
6375 /* When scrolling in (u)xterm the last line in the
6376 * scrolling direction will update slowly. */
6377 use_scroll_redrawwin = TRUE;
6378 use_scroll_status_wclear = FALSE;
6379 }
6380 }
6382 static int
6383 get_input(int prompt_position)
6384 {
6385 struct view *view;
6386 int i, key, cursor_y, cursor_x;
6388 if (prompt_position)
6389 input_mode = TRUE;
6391 while (TRUE) {
6392 foreach_view (view, i) {
6393 update_view(view);
6394 if (view_is_displayed(view) && view->has_scrolled &&
6395 use_scroll_redrawwin)
6396 redrawwin(view->win);
6397 view->has_scrolled = FALSE;
6398 }
6400 /* Update the cursor position. */
6401 if (prompt_position) {
6402 getbegyx(status_win, cursor_y, cursor_x);
6403 cursor_x = prompt_position;
6404 } else {
6405 view = display[current_view];
6406 getbegyx(view->win, cursor_y, cursor_x);
6407 cursor_x = view->width - 1;
6408 cursor_y += view->lineno - view->offset;
6409 }
6410 setsyx(cursor_y, cursor_x);
6412 /* Refresh, accept single keystroke of input */
6413 doupdate();
6414 key = wgetch(status_win);
6416 /* wgetch() with nodelay() enabled returns ERR when
6417 * there's no input. */
6418 if (key == ERR) {
6420 } else if (key == KEY_RESIZE) {
6421 int height, width;
6423 getmaxyx(stdscr, height, width);
6425 wresize(status_win, 1, width);
6426 mvwin(status_win, height - 1, 0);
6427 wnoutrefresh(status_win);
6428 resize_display();
6429 redraw_display(TRUE);
6431 } else {
6432 input_mode = FALSE;
6433 return key;
6434 }
6435 }
6436 }
6438 static char *
6439 prompt_input(const char *prompt, input_handler handler, void *data)
6440 {
6441 enum input_status status = INPUT_OK;
6442 static char buf[SIZEOF_STR];
6443 size_t pos = 0;
6445 buf[pos] = 0;
6447 while (status == INPUT_OK || status == INPUT_SKIP) {
6448 int key;
6450 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6451 wclrtoeol(status_win);
6453 key = get_input(pos + 1);
6454 switch (key) {
6455 case KEY_RETURN:
6456 case KEY_ENTER:
6457 case '\n':
6458 status = pos ? INPUT_STOP : INPUT_CANCEL;
6459 break;
6461 case KEY_BACKSPACE:
6462 if (pos > 0)
6463 buf[--pos] = 0;
6464 else
6465 status = INPUT_CANCEL;
6466 break;
6468 case KEY_ESC:
6469 status = INPUT_CANCEL;
6470 break;
6472 default:
6473 if (pos >= sizeof(buf)) {
6474 report("Input string too long");
6475 return NULL;
6476 }
6478 status = handler(data, buf, key);
6479 if (status == INPUT_OK)
6480 buf[pos++] = (char) key;
6481 }
6482 }
6484 /* Clear the status window */
6485 status_empty = FALSE;
6486 report("");
6488 if (status == INPUT_CANCEL)
6489 return NULL;
6491 buf[pos++] = 0;
6493 return buf;
6494 }
6496 static enum input_status
6497 prompt_yesno_handler(void *data, char *buf, int c)
6498 {
6499 if (c == 'y' || c == 'Y')
6500 return INPUT_STOP;
6501 if (c == 'n' || c == 'N')
6502 return INPUT_CANCEL;
6503 return INPUT_SKIP;
6504 }
6506 static bool
6507 prompt_yesno(const char *prompt)
6508 {
6509 char prompt2[SIZEOF_STR];
6511 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6512 return FALSE;
6514 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6515 }
6517 static enum input_status
6518 read_prompt_handler(void *data, char *buf, int c)
6519 {
6520 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6521 }
6523 static char *
6524 read_prompt(const char *prompt)
6525 {
6526 return prompt_input(prompt, read_prompt_handler, NULL);
6527 }
6529 /*
6530 * Repository properties
6531 */
6533 static struct ref *refs = NULL;
6534 static size_t refs_alloc = 0;
6535 static size_t refs_size = 0;
6537 /* Id <-> ref store */
6538 static struct ref ***id_refs = NULL;
6539 static size_t id_refs_alloc = 0;
6540 static size_t id_refs_size = 0;
6542 static int
6543 compare_refs(const void *ref1_, const void *ref2_)
6544 {
6545 const struct ref *ref1 = *(const struct ref **)ref1_;
6546 const struct ref *ref2 = *(const struct ref **)ref2_;
6548 if (ref1->tag != ref2->tag)
6549 return ref2->tag - ref1->tag;
6550 if (ref1->ltag != ref2->ltag)
6551 return ref2->ltag - ref2->ltag;
6552 if (ref1->head != ref2->head)
6553 return ref2->head - ref1->head;
6554 if (ref1->tracked != ref2->tracked)
6555 return ref2->tracked - ref1->tracked;
6556 if (ref1->remote != ref2->remote)
6557 return ref2->remote - ref1->remote;
6558 return strcmp(ref1->name, ref2->name);
6559 }
6561 static struct ref **
6562 get_refs(const char *id)
6563 {
6564 struct ref ***tmp_id_refs;
6565 struct ref **ref_list = NULL;
6566 size_t ref_list_alloc = 0;
6567 size_t ref_list_size = 0;
6568 size_t i;
6570 for (i = 0; i < id_refs_size; i++)
6571 if (!strcmp(id, id_refs[i][0]->id))
6572 return id_refs[i];
6574 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6575 sizeof(*id_refs));
6576 if (!tmp_id_refs)
6577 return NULL;
6579 id_refs = tmp_id_refs;
6581 for (i = 0; i < refs_size; i++) {
6582 struct ref **tmp;
6584 if (strcmp(id, refs[i].id))
6585 continue;
6587 tmp = realloc_items(ref_list, &ref_list_alloc,
6588 ref_list_size + 1, sizeof(*ref_list));
6589 if (!tmp) {
6590 if (ref_list)
6591 free(ref_list);
6592 return NULL;
6593 }
6595 ref_list = tmp;
6596 ref_list[ref_list_size] = &refs[i];
6597 /* XXX: The properties of the commit chains ensures that we can
6598 * safely modify the shared ref. The repo references will
6599 * always be similar for the same id. */
6600 ref_list[ref_list_size]->next = 1;
6602 ref_list_size++;
6603 }
6605 if (ref_list) {
6606 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6607 ref_list[ref_list_size - 1]->next = 0;
6608 id_refs[id_refs_size++] = ref_list;
6609 }
6611 return ref_list;
6612 }
6614 static int
6615 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6616 {
6617 struct ref *ref;
6618 bool tag = FALSE;
6619 bool ltag = FALSE;
6620 bool remote = FALSE;
6621 bool tracked = FALSE;
6622 bool check_replace = FALSE;
6623 bool head = FALSE;
6625 if (!prefixcmp(name, "refs/tags/")) {
6626 if (!suffixcmp(name, namelen, "^{}")) {
6627 namelen -= 3;
6628 name[namelen] = 0;
6629 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6630 check_replace = TRUE;
6631 } else {
6632 ltag = TRUE;
6633 }
6635 tag = TRUE;
6636 namelen -= STRING_SIZE("refs/tags/");
6637 name += STRING_SIZE("refs/tags/");
6639 } else if (!prefixcmp(name, "refs/remotes/")) {
6640 remote = TRUE;
6641 namelen -= STRING_SIZE("refs/remotes/");
6642 name += STRING_SIZE("refs/remotes/");
6643 tracked = !strcmp(opt_remote, name);
6645 } else if (!prefixcmp(name, "refs/heads/")) {
6646 namelen -= STRING_SIZE("refs/heads/");
6647 name += STRING_SIZE("refs/heads/");
6648 head = !strncmp(opt_head, name, namelen);
6650 } else if (!strcmp(name, "HEAD")) {
6651 string_ncopy(opt_head_rev, id, idlen);
6652 return OK;
6653 }
6655 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6656 /* it's an annotated tag, replace the previous SHA1 with the
6657 * resolved commit id; relies on the fact git-ls-remote lists
6658 * the commit id of an annotated tag right before the commit id
6659 * it points to. */
6660 refs[refs_size - 1].ltag = ltag;
6661 string_copy_rev(refs[refs_size - 1].id, id);
6663 return OK;
6664 }
6665 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6666 if (!refs)
6667 return ERR;
6669 ref = &refs[refs_size++];
6670 ref->name = malloc(namelen + 1);
6671 if (!ref->name)
6672 return ERR;
6674 strncpy(ref->name, name, namelen);
6675 ref->name[namelen] = 0;
6676 ref->head = head;
6677 ref->tag = tag;
6678 ref->ltag = ltag;
6679 ref->remote = remote;
6680 ref->tracked = tracked;
6681 string_copy_rev(ref->id, id);
6683 return OK;
6684 }
6686 static int
6687 load_refs(void)
6688 {
6689 static const char *ls_remote_argv[SIZEOF_ARG] = {
6690 "git", "ls-remote", opt_git_dir, NULL
6691 };
6692 static bool init = FALSE;
6694 if (!init) {
6695 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6696 init = TRUE;
6697 }
6699 if (!*opt_git_dir)
6700 return OK;
6702 while (refs_size > 0)
6703 free(refs[--refs_size].name);
6704 while (id_refs_size > 0)
6705 free(id_refs[--id_refs_size]);
6707 return run_io_load(ls_remote_argv, "\t", read_ref);
6708 }
6710 static void
6711 set_remote_branch(const char *name, const char *value, size_t valuelen)
6712 {
6713 if (!strcmp(name, ".remote")) {
6714 string_ncopy(opt_remote, value, valuelen);
6716 } else if (*opt_remote && !strcmp(name, ".merge")) {
6717 size_t from = strlen(opt_remote);
6719 if (!prefixcmp(value, "refs/heads/"))
6720 value += STRING_SIZE("refs/heads/");
6722 if (!string_format_from(opt_remote, &from, "/%s", value))
6723 opt_remote[0] = 0;
6724 }
6725 }
6727 static void
6728 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
6729 {
6730 const char *argv[SIZEOF_ARG] = { name, "=" };
6731 int argc = 1 + (cmd == option_set_command);
6732 int error = ERR;
6734 if (!argv_from_string(argv, &argc, value))
6735 config_msg = "Too many option arguments";
6736 else
6737 error = cmd(argc, argv);
6739 if (error == ERR)
6740 warn("Option 'tig.%s': %s", name, config_msg);
6741 }
6743 static bool
6744 set_environment_variable(const char *name, const char *value)
6745 {
6746 size_t len = strlen(name) + 1 + strlen(value) + 1;
6747 char *env = malloc(len);
6749 if (env &&
6750 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6751 putenv(env) == 0)
6752 return TRUE;
6753 free(env);
6754 return FALSE;
6755 }
6757 static void
6758 set_work_tree(const char *value)
6759 {
6760 char cwd[SIZEOF_STR];
6762 if (!getcwd(cwd, sizeof(cwd)))
6763 die("Failed to get cwd path: %s", strerror(errno));
6764 if (chdir(opt_git_dir) < 0)
6765 die("Failed to chdir(%s): %s", strerror(errno));
6766 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6767 die("Failed to get git path: %s", strerror(errno));
6768 if (chdir(cwd) < 0)
6769 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6770 if (chdir(value) < 0)
6771 die("Failed to chdir(%s): %s", value, strerror(errno));
6772 if (!getcwd(cwd, sizeof(cwd)))
6773 die("Failed to get cwd path: %s", strerror(errno));
6774 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6775 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6776 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6777 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6778 opt_is_inside_work_tree = TRUE;
6779 }
6781 static int
6782 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6783 {
6784 if (!strcmp(name, "i18n.commitencoding"))
6785 string_ncopy(opt_encoding, value, valuelen);
6787 else if (!strcmp(name, "core.editor"))
6788 string_ncopy(opt_editor, value, valuelen);
6790 else if (!strcmp(name, "core.worktree"))
6791 set_work_tree(value);
6793 else if (!prefixcmp(name, "tig.color."))
6794 set_repo_config_option(name + 10, value, option_color_command);
6796 else if (!prefixcmp(name, "tig.bind."))
6797 set_repo_config_option(name + 9, value, option_bind_command);
6799 else if (!prefixcmp(name, "tig."))
6800 set_repo_config_option(name + 4, value, option_set_command);
6802 else if (*opt_head && !prefixcmp(name, "branch.") &&
6803 !strncmp(name + 7, opt_head, strlen(opt_head)))
6804 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6806 return OK;
6807 }
6809 static int
6810 load_git_config(void)
6811 {
6812 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6814 return run_io_load(config_list_argv, "=", read_repo_config_option);
6815 }
6817 static int
6818 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6819 {
6820 if (!opt_git_dir[0]) {
6821 string_ncopy(opt_git_dir, name, namelen);
6823 } else if (opt_is_inside_work_tree == -1) {
6824 /* This can be 3 different values depending on the
6825 * version of git being used. If git-rev-parse does not
6826 * understand --is-inside-work-tree it will simply echo
6827 * the option else either "true" or "false" is printed.
6828 * Default to true for the unknown case. */
6829 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6831 } else if (*name == '.') {
6832 string_ncopy(opt_cdup, name, namelen);
6834 } else {
6835 string_ncopy(opt_prefix, name, namelen);
6836 }
6838 return OK;
6839 }
6841 static int
6842 load_repo_info(void)
6843 {
6844 const char *head_argv[] = {
6845 "git", "symbolic-ref", "HEAD", NULL
6846 };
6847 const char *rev_parse_argv[] = {
6848 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6849 "--show-cdup", "--show-prefix", NULL
6850 };
6852 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6853 chomp_string(opt_head);
6854 if (!prefixcmp(opt_head, "refs/heads/")) {
6855 char *offset = opt_head + STRING_SIZE("refs/heads/");
6857 memmove(opt_head, offset, strlen(offset) + 1);
6858 }
6859 }
6861 return run_io_load(rev_parse_argv, "=", read_repo_info);
6862 }
6865 /*
6866 * Main
6867 */
6869 static const char usage[] =
6870 "tig " TIG_VERSION " (" __DATE__ ")\n"
6871 "\n"
6872 "Usage: tig [options] [revs] [--] [paths]\n"
6873 " or: tig show [options] [revs] [--] [paths]\n"
6874 " or: tig blame [rev] path\n"
6875 " or: tig status\n"
6876 " or: tig < [git command output]\n"
6877 "\n"
6878 "Options:\n"
6879 " -v, --version Show version and exit\n"
6880 " -h, --help Show help message and exit";
6882 static void __NORETURN
6883 quit(int sig)
6884 {
6885 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6886 if (cursed)
6887 endwin();
6888 exit(0);
6889 }
6891 static void __NORETURN
6892 die(const char *err, ...)
6893 {
6894 va_list args;
6896 endwin();
6898 va_start(args, err);
6899 fputs("tig: ", stderr);
6900 vfprintf(stderr, err, args);
6901 fputs("\n", stderr);
6902 va_end(args);
6904 exit(1);
6905 }
6907 static void
6908 warn(const char *msg, ...)
6909 {
6910 va_list args;
6912 va_start(args, msg);
6913 fputs("tig warning: ", stderr);
6914 vfprintf(stderr, msg, args);
6915 fputs("\n", stderr);
6916 va_end(args);
6917 }
6919 static enum request
6920 parse_options(int argc, const char *argv[])
6921 {
6922 enum request request = REQ_VIEW_MAIN;
6923 const char *subcommand;
6924 bool seen_dashdash = FALSE;
6925 /* XXX: This is vulnerable to the user overriding options
6926 * required for the main view parser. */
6927 const char *custom_argv[SIZEOF_ARG] = {
6928 "git", "log", "--no-color", "--pretty=raw", "--parents",
6929 "--topo-order", NULL
6930 };
6931 int i, j = 6;
6933 if (!isatty(STDIN_FILENO)) {
6934 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
6935 return REQ_VIEW_PAGER;
6936 }
6938 if (argc <= 1)
6939 return REQ_NONE;
6941 subcommand = argv[1];
6942 if (!strcmp(subcommand, "status")) {
6943 if (argc > 2)
6944 warn("ignoring arguments after `%s'", subcommand);
6945 return REQ_VIEW_STATUS;
6947 } else if (!strcmp(subcommand, "blame")) {
6948 if (argc <= 2 || argc > 4)
6949 die("invalid number of options to blame\n\n%s", usage);
6951 i = 2;
6952 if (argc == 4) {
6953 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
6954 i++;
6955 }
6957 string_ncopy(opt_file, argv[i], strlen(argv[i]));
6958 return REQ_VIEW_BLAME;
6960 } else if (!strcmp(subcommand, "show")) {
6961 request = REQ_VIEW_DIFF;
6963 } else {
6964 subcommand = NULL;
6965 }
6967 if (subcommand) {
6968 custom_argv[1] = subcommand;
6969 j = 2;
6970 }
6972 for (i = 1 + !!subcommand; i < argc; i++) {
6973 const char *opt = argv[i];
6975 if (seen_dashdash || !strcmp(opt, "--")) {
6976 seen_dashdash = TRUE;
6978 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
6979 printf("tig version %s\n", TIG_VERSION);
6980 quit(0);
6982 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
6983 printf("%s\n", usage);
6984 quit(0);
6985 }
6987 custom_argv[j++] = opt;
6988 if (j >= ARRAY_SIZE(custom_argv))
6989 die("command too long");
6990 }
6992 if (!prepare_update(VIEW(request), custom_argv, NULL, FORMAT_NONE))
6993 die("Failed to format arguments");
6995 return request;
6996 }
6998 int
6999 main(int argc, const char *argv[])
7000 {
7001 enum request request = parse_options(argc, argv);
7002 struct view *view;
7003 size_t i;
7005 signal(SIGINT, quit);
7006 signal(SIGPIPE, SIG_IGN);
7008 if (setlocale(LC_ALL, "")) {
7009 char *codeset = nl_langinfo(CODESET);
7011 string_ncopy(opt_codeset, codeset, strlen(codeset));
7012 }
7014 if (load_repo_info() == ERR)
7015 die("Failed to load repo info.");
7017 if (load_options() == ERR)
7018 die("Failed to load user config.");
7020 if (load_git_config() == ERR)
7021 die("Failed to load repo config.");
7023 /* Require a git repository unless when running in pager mode. */
7024 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7025 die("Not a git repository");
7027 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
7028 opt_utf8 = FALSE;
7030 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
7031 opt_iconv = iconv_open(opt_codeset, opt_encoding);
7032 if (opt_iconv == ICONV_NONE)
7033 die("Failed to initialize character set conversion");
7034 }
7036 if (load_refs() == ERR)
7037 die("Failed to load refs.");
7039 foreach_view (view, i)
7040 argv_from_env(view->ops->argv, view->cmd_env);
7042 init_display();
7044 if (request != REQ_NONE)
7045 open_view(NULL, request, OPEN_PREPARED);
7046 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7048 while (view_driver(display[current_view], request)) {
7049 int key = get_input(0);
7051 view = display[current_view];
7052 request = get_keybinding(view->keymap, key);
7054 /* Some low-level request handling. This keeps access to
7055 * status_win restricted. */
7056 switch (request) {
7057 case REQ_PROMPT:
7058 {
7059 char *cmd = read_prompt(":");
7061 if (cmd && isdigit(*cmd)) {
7062 int lineno = view->lineno + 1;
7064 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7065 select_view_line(view, lineno - 1);
7066 report("");
7067 } else {
7068 report("Unable to parse '%s' as a line number", cmd);
7069 }
7071 } else if (cmd) {
7072 struct view *next = VIEW(REQ_VIEW_PAGER);
7073 const char *argv[SIZEOF_ARG] = { "git" };
7074 int argc = 1;
7076 /* When running random commands, initially show the
7077 * command in the title. However, it maybe later be
7078 * overwritten if a commit line is selected. */
7079 string_ncopy(next->ref, cmd, strlen(cmd));
7081 if (!argv_from_string(argv, &argc, cmd)) {
7082 report("Too many arguments");
7083 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
7084 report("Failed to format command");
7085 } else {
7086 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7087 }
7088 }
7090 request = REQ_NONE;
7091 break;
7092 }
7093 case REQ_SEARCH:
7094 case REQ_SEARCH_BACK:
7095 {
7096 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7097 char *search = read_prompt(prompt);
7099 if (search)
7100 string_ncopy(opt_search, search, strlen(search));
7101 else if (*opt_search)
7102 request = request == REQ_SEARCH ?
7103 REQ_FIND_NEXT :
7104 REQ_FIND_PREV;
7105 else
7106 request = REQ_NONE;
7107 break;
7108 }
7109 default:
7110 break;
7111 }
7112 }
7114 quit(0);
7116 return 0;
7117 }