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1 /* Copyright (c) 2006-2009 Jonas Fonseca <fonseca@diku.dk>
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
14 #ifdef HAVE_CONFIG_H
15 #include "config.h"
16 #endif
18 #ifndef TIG_VERSION
19 #define TIG_VERSION "unknown-version"
20 #endif
22 #ifndef DEBUG
23 #define NDEBUG
24 #endif
26 #include <assert.h>
27 #include <errno.h>
28 #include <ctype.h>
29 #include <signal.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <sys/stat.h>
37 #include <sys/select.h>
38 #include <unistd.h>
39 #include <time.h>
40 #include <fcntl.h>
42 #include <regex.h>
44 #include <locale.h>
45 #include <langinfo.h>
46 #include <iconv.h>
48 /* ncurses(3): Must be defined to have extended wide-character functions. */
49 #define _XOPEN_SOURCE_EXTENDED
51 #ifdef HAVE_NCURSESW_NCURSES_H
52 #include <ncursesw/ncurses.h>
53 #else
54 #ifdef HAVE_NCURSES_NCURSES_H
55 #include <ncurses/ncurses.h>
56 #else
57 #include <ncurses.h>
58 #endif
59 #endif
61 #if __GNUC__ >= 3
62 #define __NORETURN __attribute__((__noreturn__))
63 #else
64 #define __NORETURN
65 #endif
67 static void __NORETURN die(const char *err, ...);
68 static void warn(const char *msg, ...);
69 static void report(const char *msg, ...);
70 static void set_nonblocking_input(bool loading);
71 static int load_refs(void);
72 static size_t utf8_length(const char **string, size_t col, int *width, size_t max_width, int *trimmed, bool reserve);
74 #define ABS(x) ((x) >= 0 ? (x) : -(x))
75 #define MIN(x, y) ((x) < (y) ? (x) : (y))
77 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
78 #define STRING_SIZE(x) (sizeof(x) - 1)
80 #define SIZEOF_STR 1024 /* Default string size. */
81 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
82 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
83 #define SIZEOF_ARG 32 /* Default argument array size. */
85 /* Revision graph */
87 #define REVGRAPH_INIT 'I'
88 #define REVGRAPH_MERGE 'M'
89 #define REVGRAPH_BRANCH '+'
90 #define REVGRAPH_COMMIT '*'
91 #define REVGRAPH_BOUND '^'
93 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
95 /* This color name can be used to refer to the default term colors. */
96 #define COLOR_DEFAULT (-1)
98 #define ICONV_NONE ((iconv_t) -1)
99 #ifndef ICONV_CONST
100 #define ICONV_CONST /* nothing */
101 #endif
103 /* The format and size of the date column in the main view. */
104 #define DATE_FORMAT "%Y-%m-%d %H:%M"
105 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
107 #define AUTHOR_COLS 20
108 #define ID_COLS 8
110 /* The default interval between line numbers. */
111 #define NUMBER_INTERVAL 5
113 #define TAB_SIZE 8
115 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
117 #define NULL_ID "0000000000000000000000000000000000000000"
119 #define S_ISGITLINK(mode) (((mode) & S_IFMT) == 0160000)
121 #ifndef GIT_CONFIG
122 #define GIT_CONFIG "config"
123 #endif
125 /* Some ASCII-shorthands fitted into the ncurses namespace. */
126 #define KEY_TAB '\t'
127 #define KEY_RETURN '\r'
128 #define KEY_ESC 27
131 struct ref {
132 char *name; /* Ref name; tag or head names are shortened. */
133 char id[SIZEOF_REV]; /* Commit SHA1 ID */
134 unsigned int head:1; /* Is it the current HEAD? */
135 unsigned int tag:1; /* Is it a tag? */
136 unsigned int ltag:1; /* If so, is the tag local? */
137 unsigned int remote:1; /* Is it a remote ref? */
138 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
139 unsigned int next:1; /* For ref lists: are there more refs? */
140 };
142 static struct ref **get_refs(const char *id);
144 enum format_flags {
145 FORMAT_ALL, /* Perform replacement in all arguments. */
146 FORMAT_DASH, /* Perform replacement up until "--". */
147 FORMAT_NONE /* No replacement should be performed. */
148 };
150 static bool format_argv(const char *dst[], const char *src[], enum format_flags flags);
152 enum input_status {
153 INPUT_OK,
154 INPUT_SKIP,
155 INPUT_STOP,
156 INPUT_CANCEL
157 };
159 typedef enum input_status (*input_handler)(void *data, char *buf, int c);
161 static char *prompt_input(const char *prompt, input_handler handler, void *data);
162 static bool prompt_yesno(const char *prompt);
164 /*
165 * 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 void
2506 select_view_line(struct view *view, unsigned long lineno)
2507 {
2508 unsigned long old_lineno = view->lineno;
2509 unsigned long old_offset = view->offset;
2511 if (goto_view_line(view, view->offset, lineno)) {
2512 if (view_is_displayed(view)) {
2513 if (old_offset != view->offset) {
2514 redraw_view(view);
2515 } else {
2516 draw_view_line(view, old_lineno - view->offset);
2517 draw_view_line(view, view->lineno - view->offset);
2518 wnoutrefresh(view->win);
2519 }
2520 } else {
2521 view->ops->select(view, &view->line[view->lineno]);
2522 }
2523 }
2524 }
2526 static void
2527 find_next(struct view *view, enum request request)
2528 {
2529 unsigned long lineno = view->lineno;
2530 int direction;
2532 if (!*view->grep) {
2533 if (!*opt_search)
2534 report("No previous search");
2535 else
2536 search_view(view, request);
2537 return;
2538 }
2540 switch (request) {
2541 case REQ_SEARCH:
2542 case REQ_FIND_NEXT:
2543 direction = 1;
2544 break;
2546 case REQ_SEARCH_BACK:
2547 case REQ_FIND_PREV:
2548 direction = -1;
2549 break;
2551 default:
2552 return;
2553 }
2555 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2556 lineno += direction;
2558 /* Note, lineno is unsigned long so will wrap around in which case it
2559 * will become bigger than view->lines. */
2560 for (; lineno < view->lines; lineno += direction) {
2561 if (view->ops->grep(view, &view->line[lineno])) {
2562 select_view_line(view, lineno);
2563 report("Line %ld matches '%s'", lineno + 1, view->grep);
2564 return;
2565 }
2566 }
2568 report("No match found for '%s'", view->grep);
2569 }
2571 static void
2572 search_view(struct view *view, enum request request)
2573 {
2574 int regex_err;
2576 if (view->regex) {
2577 regfree(view->regex);
2578 *view->grep = 0;
2579 } else {
2580 view->regex = calloc(1, sizeof(*view->regex));
2581 if (!view->regex)
2582 return;
2583 }
2585 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2586 if (regex_err != 0) {
2587 char buf[SIZEOF_STR] = "unknown error";
2589 regerror(regex_err, view->regex, buf, sizeof(buf));
2590 report("Search failed: %s", buf);
2591 return;
2592 }
2594 string_copy(view->grep, opt_search);
2596 find_next(view, request);
2597 }
2599 /*
2600 * Incremental updating
2601 */
2603 static void
2604 reset_view(struct view *view)
2605 {
2606 int i;
2608 for (i = 0; i < view->lines; i++)
2609 free(view->line[i].data);
2610 free(view->line);
2612 view->p_offset = view->offset;
2613 view->p_yoffset = view->yoffset;
2614 view->p_lineno = view->lineno;
2616 view->line = NULL;
2617 view->offset = 0;
2618 view->yoffset = 0;
2619 view->lines = 0;
2620 view->lineno = 0;
2621 view->line_alloc = 0;
2622 view->vid[0] = 0;
2623 view->update_secs = 0;
2624 }
2626 static void
2627 free_argv(const char *argv[])
2628 {
2629 int argc;
2631 for (argc = 0; argv[argc]; argc++)
2632 free((void *) argv[argc]);
2633 }
2635 static bool
2636 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2637 {
2638 char buf[SIZEOF_STR];
2639 int argc;
2640 bool noreplace = flags == FORMAT_NONE;
2642 free_argv(dst_argv);
2644 for (argc = 0; src_argv[argc]; argc++) {
2645 const char *arg = src_argv[argc];
2646 size_t bufpos = 0;
2648 while (arg) {
2649 char *next = strstr(arg, "%(");
2650 int len = next - arg;
2651 const char *value;
2653 if (!next || noreplace) {
2654 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2655 noreplace = TRUE;
2656 len = strlen(arg);
2657 value = "";
2659 } else if (!prefixcmp(next, "%(directory)")) {
2660 value = opt_path;
2662 } else if (!prefixcmp(next, "%(file)")) {
2663 value = opt_file;
2665 } else if (!prefixcmp(next, "%(ref)")) {
2666 value = *opt_ref ? opt_ref : "HEAD";
2668 } else if (!prefixcmp(next, "%(head)")) {
2669 value = ref_head;
2671 } else if (!prefixcmp(next, "%(commit)")) {
2672 value = ref_commit;
2674 } else if (!prefixcmp(next, "%(blob)")) {
2675 value = ref_blob;
2677 } else {
2678 report("Unknown replacement: `%s`", next);
2679 return FALSE;
2680 }
2682 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2683 return FALSE;
2685 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2686 }
2688 dst_argv[argc] = strdup(buf);
2689 if (!dst_argv[argc])
2690 break;
2691 }
2693 dst_argv[argc] = NULL;
2695 return src_argv[argc] == NULL;
2696 }
2698 static bool
2699 restore_view_position(struct view *view)
2700 {
2701 if (!view->p_restore || (view->pipe && view->lines <= view->p_lineno))
2702 return FALSE;
2704 /* Changing the view position cancels the restoring. */
2705 /* FIXME: Changing back to the first line is not detected. */
2706 if (view->offset != 0 || view->lineno != 0) {
2707 view->p_restore = FALSE;
2708 return FALSE;
2709 }
2711 if (goto_view_line(view, view->p_offset, view->p_lineno) &&
2712 view_is_displayed(view))
2713 werase(view->win);
2715 view->yoffset = view->p_yoffset;
2716 view->p_restore = FALSE;
2718 return TRUE;
2719 }
2721 static void
2722 end_update(struct view *view, bool force)
2723 {
2724 if (!view->pipe)
2725 return;
2726 while (!view->ops->read(view, NULL))
2727 if (!force)
2728 return;
2729 set_nonblocking_input(FALSE);
2730 if (force)
2731 kill_io(view->pipe);
2732 done_io(view->pipe);
2733 view->pipe = NULL;
2734 }
2736 static void
2737 setup_update(struct view *view, const char *vid)
2738 {
2739 set_nonblocking_input(TRUE);
2740 reset_view(view);
2741 string_copy_rev(view->vid, vid);
2742 view->pipe = &view->io;
2743 view->start_time = time(NULL);
2744 }
2746 static bool
2747 prepare_update(struct view *view, const char *argv[], const char *dir,
2748 enum format_flags flags)
2749 {
2750 if (view->pipe)
2751 end_update(view, TRUE);
2752 return init_io_rd(&view->io, argv, dir, flags);
2753 }
2755 static bool
2756 prepare_update_file(struct view *view, const char *name)
2757 {
2758 if (view->pipe)
2759 end_update(view, TRUE);
2760 return io_open(&view->io, name);
2761 }
2763 static bool
2764 begin_update(struct view *view, bool refresh)
2765 {
2766 if (view->pipe)
2767 end_update(view, TRUE);
2769 if (refresh) {
2770 if (!start_io(&view->io))
2771 return FALSE;
2773 } else {
2774 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2775 opt_path[0] = 0;
2777 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2778 return FALSE;
2780 /* Put the current ref_* value to the view title ref
2781 * member. This is needed by the blob view. Most other
2782 * views sets it automatically after loading because the
2783 * first line is a commit line. */
2784 string_copy_rev(view->ref, view->id);
2785 }
2787 setup_update(view, view->id);
2789 return TRUE;
2790 }
2792 #define ITEM_CHUNK_SIZE 256
2793 static void *
2794 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2795 {
2796 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2797 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2799 if (mem == NULL || num_chunks != num_chunks_new) {
2800 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2801 mem = realloc(mem, *size * item_size);
2802 }
2804 return mem;
2805 }
2807 static struct line *
2808 realloc_lines(struct view *view, size_t line_size)
2809 {
2810 size_t alloc = view->line_alloc;
2811 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2812 sizeof(*view->line));
2814 if (!tmp)
2815 return NULL;
2817 view->line = tmp;
2818 view->line_alloc = alloc;
2819 return view->line;
2820 }
2822 static bool
2823 update_view(struct view *view)
2824 {
2825 char out_buffer[BUFSIZ * 2];
2826 char *line;
2827 /* Clear the view and redraw everything since the tree sorting
2828 * might have rearranged things. */
2829 bool redraw = view->lines == 0;
2830 bool can_read = TRUE;
2832 if (!view->pipe)
2833 return TRUE;
2835 if (!io_can_read(view->pipe)) {
2836 if (view->lines == 0 && view_is_displayed(view)) {
2837 time_t secs = time(NULL) - view->start_time;
2839 if (secs > 1 && secs > view->update_secs) {
2840 if (view->update_secs == 0)
2841 redraw_view(view);
2842 update_view_title(view);
2843 view->update_secs = secs;
2844 }
2845 }
2846 return TRUE;
2847 }
2849 for (; (line = io_get(view->pipe, '\n', can_read)); can_read = FALSE) {
2850 if (opt_iconv != ICONV_NONE) {
2851 ICONV_CONST char *inbuf = line;
2852 size_t inlen = strlen(line) + 1;
2854 char *outbuf = out_buffer;
2855 size_t outlen = sizeof(out_buffer);
2857 size_t ret;
2859 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2860 if (ret != (size_t) -1)
2861 line = out_buffer;
2862 }
2864 if (!view->ops->read(view, line)) {
2865 report("Allocation failure");
2866 end_update(view, TRUE);
2867 return FALSE;
2868 }
2869 }
2871 {
2872 unsigned long lines = view->lines;
2873 int digits;
2875 for (digits = 0; lines; digits++)
2876 lines /= 10;
2878 /* Keep the displayed view in sync with line number scaling. */
2879 if (digits != view->digits) {
2880 view->digits = digits;
2881 if (opt_line_number || view == VIEW(REQ_VIEW_BLAME))
2882 redraw = TRUE;
2883 }
2884 }
2886 if (io_error(view->pipe)) {
2887 report("Failed to read: %s", io_strerror(view->pipe));
2888 end_update(view, TRUE);
2890 } else if (io_eof(view->pipe)) {
2891 report("");
2892 end_update(view, FALSE);
2893 }
2895 if (restore_view_position(view))
2896 redraw = TRUE;
2898 if (!view_is_displayed(view))
2899 return TRUE;
2901 if (redraw)
2902 redraw_view_from(view, 0);
2903 else
2904 redraw_view_dirty(view);
2906 /* Update the title _after_ the redraw so that if the redraw picks up a
2907 * commit reference in view->ref it'll be available here. */
2908 update_view_title(view);
2909 return TRUE;
2910 }
2912 static struct line *
2913 add_line_data(struct view *view, void *data, enum line_type type)
2914 {
2915 struct line *line;
2917 if (!realloc_lines(view, view->lines + 1))
2918 return NULL;
2920 line = &view->line[view->lines++];
2921 memset(line, 0, sizeof(*line));
2922 line->type = type;
2923 line->data = data;
2924 line->dirty = 1;
2926 return line;
2927 }
2929 static struct line *
2930 add_line_text(struct view *view, const char *text, enum line_type type)
2931 {
2932 char *data = text ? strdup(text) : NULL;
2934 return data ? add_line_data(view, data, type) : NULL;
2935 }
2937 static struct line *
2938 add_line_format(struct view *view, enum line_type type, const char *fmt, ...)
2939 {
2940 char buf[SIZEOF_STR];
2941 va_list args;
2943 va_start(args, fmt);
2944 if (vsnprintf(buf, sizeof(buf), fmt, args) >= sizeof(buf))
2945 buf[0] = 0;
2946 va_end(args);
2948 return buf[0] ? add_line_text(view, buf, type) : NULL;
2949 }
2951 /*
2952 * View opening
2953 */
2955 enum open_flags {
2956 OPEN_DEFAULT = 0, /* Use default view switching. */
2957 OPEN_SPLIT = 1, /* Split current view. */
2958 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2959 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2960 OPEN_PREPARED = 32, /* Open already prepared command. */
2961 };
2963 static void
2964 open_view(struct view *prev, enum request request, enum open_flags flags)
2965 {
2966 bool split = !!(flags & OPEN_SPLIT);
2967 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2968 bool nomaximize = !!(flags & OPEN_REFRESH);
2969 struct view *view = VIEW(request);
2970 int nviews = displayed_views();
2971 struct view *base_view = display[0];
2973 if (view == prev && nviews == 1 && !reload) {
2974 report("Already in %s view", view->name);
2975 return;
2976 }
2978 if (view->git_dir && !opt_git_dir[0]) {
2979 report("The %s view is disabled in pager view", view->name);
2980 return;
2981 }
2983 if (split) {
2984 display[1] = view;
2985 current_view = 1;
2986 } else if (!nomaximize) {
2987 /* Maximize the current view. */
2988 memset(display, 0, sizeof(display));
2989 current_view = 0;
2990 display[current_view] = view;
2991 }
2993 /* Resize the view when switching between split- and full-screen,
2994 * or when switching between two different full-screen views. */
2995 if (nviews != displayed_views() ||
2996 (nviews == 1 && base_view != display[0]))
2997 resize_display();
2999 if (view->ops->open) {
3000 if (view->pipe)
3001 end_update(view, TRUE);
3002 if (!view->ops->open(view)) {
3003 report("Failed to load %s view", view->name);
3004 return;
3005 }
3006 restore_view_position(view);
3008 } else if ((reload || strcmp(view->vid, view->id)) &&
3009 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
3010 report("Failed to load %s view", view->name);
3011 return;
3012 }
3014 if (split && prev->lineno - prev->offset >= prev->height) {
3015 /* Take the title line into account. */
3016 int lines = prev->lineno - prev->offset - prev->height + 1;
3018 /* Scroll the view that was split if the current line is
3019 * outside the new limited view. */
3020 do_scroll_view(prev, lines);
3021 }
3023 if (prev && view != prev) {
3024 if (split) {
3025 /* "Blur" the previous view. */
3026 update_view_title(prev);
3027 }
3029 view->parent = prev;
3030 }
3032 if (view->pipe && view->lines == 0) {
3033 /* Clear the old view and let the incremental updating refill
3034 * the screen. */
3035 werase(view->win);
3036 view->p_restore = flags & (OPEN_RELOAD | OPEN_REFRESH);
3037 report("");
3038 } else if (view_is_displayed(view)) {
3039 redraw_view(view);
3040 report("");
3041 }
3042 }
3044 static void
3045 open_external_viewer(const char *argv[], const char *dir)
3046 {
3047 def_prog_mode(); /* save current tty modes */
3048 endwin(); /* restore original tty modes */
3049 run_io_fg(argv, dir);
3050 fprintf(stderr, "Press Enter to continue");
3051 getc(opt_tty);
3052 reset_prog_mode();
3053 redraw_display(TRUE);
3054 }
3056 static void
3057 open_mergetool(const char *file)
3058 {
3059 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
3061 open_external_viewer(mergetool_argv, opt_cdup);
3062 }
3064 static void
3065 open_editor(bool from_root, const char *file)
3066 {
3067 const char *editor_argv[] = { "vi", file, NULL };
3068 const char *editor;
3070 editor = getenv("GIT_EDITOR");
3071 if (!editor && *opt_editor)
3072 editor = opt_editor;
3073 if (!editor)
3074 editor = getenv("VISUAL");
3075 if (!editor)
3076 editor = getenv("EDITOR");
3077 if (!editor)
3078 editor = "vi";
3080 editor_argv[0] = editor;
3081 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
3082 }
3084 static void
3085 open_run_request(enum request request)
3086 {
3087 struct run_request *req = get_run_request(request);
3088 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
3090 if (!req) {
3091 report("Unknown run request");
3092 return;
3093 }
3095 if (format_argv(argv, req->argv, FORMAT_ALL))
3096 open_external_viewer(argv, NULL);
3097 free_argv(argv);
3098 }
3100 /*
3101 * User request switch noodle
3102 */
3104 static int
3105 view_driver(struct view *view, enum request request)
3106 {
3107 int i;
3109 if (request == REQ_NONE)
3110 return TRUE;
3112 if (request > REQ_NONE) {
3113 open_run_request(request);
3114 /* FIXME: When all views can refresh always do this. */
3115 if (view == VIEW(REQ_VIEW_STATUS) ||
3116 view == VIEW(REQ_VIEW_MAIN) ||
3117 view == VIEW(REQ_VIEW_LOG) ||
3118 view == VIEW(REQ_VIEW_STAGE))
3119 request = REQ_REFRESH;
3120 else
3121 return TRUE;
3122 }
3124 if (view && view->lines) {
3125 request = view->ops->request(view, request, &view->line[view->lineno]);
3126 if (request == REQ_NONE)
3127 return TRUE;
3128 }
3130 switch (request) {
3131 case REQ_MOVE_UP:
3132 case REQ_MOVE_DOWN:
3133 case REQ_MOVE_PAGE_UP:
3134 case REQ_MOVE_PAGE_DOWN:
3135 case REQ_MOVE_FIRST_LINE:
3136 case REQ_MOVE_LAST_LINE:
3137 move_view(view, request);
3138 break;
3140 case REQ_SCROLL_LEFT:
3141 case REQ_SCROLL_RIGHT:
3142 case REQ_SCROLL_LINE_DOWN:
3143 case REQ_SCROLL_LINE_UP:
3144 case REQ_SCROLL_PAGE_DOWN:
3145 case REQ_SCROLL_PAGE_UP:
3146 scroll_view(view, request);
3147 break;
3149 case REQ_VIEW_BLAME:
3150 if (!opt_file[0]) {
3151 report("No file chosen, press %s to open tree view",
3152 get_key(REQ_VIEW_TREE));
3153 break;
3154 }
3155 open_view(view, request, OPEN_DEFAULT);
3156 break;
3158 case REQ_VIEW_BLOB:
3159 if (!ref_blob[0]) {
3160 report("No file chosen, press %s to open tree view",
3161 get_key(REQ_VIEW_TREE));
3162 break;
3163 }
3164 open_view(view, request, OPEN_DEFAULT);
3165 break;
3167 case REQ_VIEW_PAGER:
3168 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3169 report("No pager content, press %s to run command from prompt",
3170 get_key(REQ_PROMPT));
3171 break;
3172 }
3173 open_view(view, request, OPEN_DEFAULT);
3174 break;
3176 case REQ_VIEW_STAGE:
3177 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3178 report("No stage content, press %s to open the status view and choose file",
3179 get_key(REQ_VIEW_STATUS));
3180 break;
3181 }
3182 open_view(view, request, OPEN_DEFAULT);
3183 break;
3185 case REQ_VIEW_STATUS:
3186 if (opt_is_inside_work_tree == FALSE) {
3187 report("The status view requires a working tree");
3188 break;
3189 }
3190 open_view(view, request, OPEN_DEFAULT);
3191 break;
3193 case REQ_VIEW_MAIN:
3194 case REQ_VIEW_DIFF:
3195 case REQ_VIEW_LOG:
3196 case REQ_VIEW_TREE:
3197 case REQ_VIEW_HELP:
3198 open_view(view, request, OPEN_DEFAULT);
3199 break;
3201 case REQ_NEXT:
3202 case REQ_PREVIOUS:
3203 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3205 if ((view == VIEW(REQ_VIEW_DIFF) &&
3206 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3207 (view == VIEW(REQ_VIEW_DIFF) &&
3208 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3209 (view == VIEW(REQ_VIEW_STAGE) &&
3210 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3211 (view == VIEW(REQ_VIEW_BLOB) &&
3212 view->parent == VIEW(REQ_VIEW_TREE))) {
3213 int line;
3215 view = view->parent;
3216 line = view->lineno;
3217 move_view(view, request);
3218 if (view_is_displayed(view))
3219 update_view_title(view);
3220 if (line != view->lineno)
3221 view->ops->request(view, REQ_ENTER,
3222 &view->line[view->lineno]);
3224 } else {
3225 move_view(view, request);
3226 }
3227 break;
3229 case REQ_VIEW_NEXT:
3230 {
3231 int nviews = displayed_views();
3232 int next_view = (current_view + 1) % nviews;
3234 if (next_view == current_view) {
3235 report("Only one view is displayed");
3236 break;
3237 }
3239 current_view = next_view;
3240 /* Blur out the title of the previous view. */
3241 update_view_title(view);
3242 report("");
3243 break;
3244 }
3245 case REQ_REFRESH:
3246 report("Refreshing is not yet supported for the %s view", view->name);
3247 break;
3249 case REQ_MAXIMIZE:
3250 if (displayed_views() == 2)
3251 maximize_view(view);
3252 break;
3254 case REQ_TOGGLE_LINENO:
3255 toggle_view_option(&opt_line_number, "line numbers");
3256 break;
3258 case REQ_TOGGLE_DATE:
3259 toggle_view_option(&opt_date, "date display");
3260 break;
3262 case REQ_TOGGLE_AUTHOR:
3263 toggle_view_option(&opt_author, "author display");
3264 break;
3266 case REQ_TOGGLE_REV_GRAPH:
3267 toggle_view_option(&opt_rev_graph, "revision graph display");
3268 break;
3270 case REQ_TOGGLE_REFS:
3271 toggle_view_option(&opt_show_refs, "reference display");
3272 break;
3274 case REQ_SEARCH:
3275 case REQ_SEARCH_BACK:
3276 search_view(view, request);
3277 break;
3279 case REQ_FIND_NEXT:
3280 case REQ_FIND_PREV:
3281 find_next(view, request);
3282 break;
3284 case REQ_STOP_LOADING:
3285 for (i = 0; i < ARRAY_SIZE(views); i++) {
3286 view = &views[i];
3287 if (view->pipe)
3288 report("Stopped loading the %s view", view->name),
3289 end_update(view, TRUE);
3290 }
3291 break;
3293 case REQ_SHOW_VERSION:
3294 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3295 return TRUE;
3297 case REQ_SCREEN_REDRAW:
3298 redraw_display(TRUE);
3299 break;
3301 case REQ_EDIT:
3302 report("Nothing to edit");
3303 break;
3305 case REQ_ENTER:
3306 report("Nothing to enter");
3307 break;
3309 case REQ_VIEW_CLOSE:
3310 /* XXX: Mark closed views by letting view->parent point to the
3311 * view itself. Parents to closed view should never be
3312 * followed. */
3313 if (view->parent &&
3314 view->parent->parent != view->parent) {
3315 maximize_view(view->parent);
3316 view->parent = view;
3317 break;
3318 }
3319 /* Fall-through */
3320 case REQ_QUIT:
3321 return FALSE;
3323 default:
3324 report("Unknown key, press 'h' for help");
3325 return TRUE;
3326 }
3328 return TRUE;
3329 }
3332 /*
3333 * View backend utilities
3334 */
3336 /* Small author cache to reduce memory consumption. It uses binary
3337 * search to lookup or find place to position new entries. No entries
3338 * are ever freed. */
3339 static const char *
3340 get_author(const char *name)
3341 {
3342 static const char **authors;
3343 static size_t authors_alloc;
3344 static size_t authors_size;
3345 const char **tmp;
3346 int from = 0, to = authors_size - 1;
3348 while (from <= to) {
3349 size_t pos = (to + from) / 2;
3350 int cmp = strcmp(name, authors[pos]);
3352 if (!cmp)
3353 return authors[pos];
3355 if (cmp < 0)
3356 to = pos - 1;
3357 else
3358 from = pos + 1;
3359 }
3361 tmp = realloc_items(authors, &authors_alloc, authors_size + 1, sizeof(*authors));
3362 if (!tmp)
3363 return NULL;
3364 name = strdup(name);
3365 if (!name)
3366 return NULL;
3368 authors = tmp;
3369 memmove(authors + from + 1, authors + from, (authors_size - from) * sizeof(*authors));
3370 authors[from] = name;
3371 authors_size++;
3373 return name;
3374 }
3376 static void
3377 parse_timezone(time_t *time, const char *zone)
3378 {
3379 long tz;
3381 tz = ('0' - zone[1]) * 60 * 60 * 10;
3382 tz += ('0' - zone[2]) * 60 * 60;
3383 tz += ('0' - zone[3]) * 60;
3384 tz += ('0' - zone[4]);
3386 if (zone[0] == '-')
3387 tz = -tz;
3389 *time -= tz;
3390 }
3392 /* Parse author lines where the name may be empty:
3393 * author <email@address.tld> 1138474660 +0100
3394 */
3395 static void
3396 parse_author_line(char *ident, const char **author, time_t *time)
3397 {
3398 char *nameend = strchr(ident, '<');
3399 char *emailend = strchr(ident, '>');
3401 if (nameend && emailend)
3402 *nameend = *emailend = 0;
3403 ident = chomp_string(ident);
3404 if (!*ident) {
3405 if (nameend)
3406 ident = chomp_string(nameend + 1);
3407 if (!*ident)
3408 ident = "Unknown";
3409 }
3411 *author = get_author(ident);
3413 /* Parse epoch and timezone */
3414 if (emailend && emailend[1] == ' ') {
3415 char *secs = emailend + 2;
3416 char *zone = strchr(secs, ' ');
3418 *time = (time_t) atol(secs);
3420 if (zone && strlen(zone) == STRING_SIZE(" +0700"))
3421 parse_timezone(time, zone + 1);
3422 }
3423 }
3425 static enum input_status
3426 select_commit_parent_handler(void *data, char *buf, int c)
3427 {
3428 size_t parents = *(size_t *) data;
3429 int parent = 0;
3431 if (!isdigit(c))
3432 return INPUT_SKIP;
3434 if (*buf)
3435 parent = atoi(buf) * 10;
3436 parent += c - '0';
3438 if (parent > parents)
3439 return INPUT_SKIP;
3440 return INPUT_OK;
3441 }
3443 static bool
3444 select_commit_parent(const char *id, char rev[SIZEOF_REV], const char *path)
3445 {
3446 char buf[SIZEOF_STR * 4];
3447 const char *revlist_argv[] = {
3448 "git", "rev-list", "-1", "--parents", id, "--", path, NULL
3449 };
3450 int parents;
3452 if (!run_io_buf(revlist_argv, buf, sizeof(buf)) ||
3453 !*chomp_string(buf) ||
3454 (parents = (strlen(buf) / 40) - 1) < 0) {
3455 report("Failed to get parent information");
3456 return FALSE;
3458 } else if (parents == 0) {
3459 if (path)
3460 report("Path '%s' does not exist in the parent", path);
3461 else
3462 report("The selected commit has no parents");
3463 return FALSE;
3464 }
3466 if (parents > 1) {
3467 char prompt[SIZEOF_STR];
3468 char *result;
3470 if (!string_format(prompt, "Which parent? [1..%d] ", parents))
3471 return FALSE;
3472 result = prompt_input(prompt, select_commit_parent_handler, &parents);
3473 if (!result)
3474 return FALSE;
3475 parents = atoi(result);
3476 }
3478 string_copy_rev(rev, &buf[41 * parents]);
3479 return TRUE;
3480 }
3482 /*
3483 * Pager backend
3484 */
3486 static bool
3487 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3488 {
3489 char text[SIZEOF_STR];
3491 if (opt_line_number && draw_lineno(view, lineno))
3492 return TRUE;
3494 string_expand(text, sizeof(text), line->data, opt_tab_size);
3495 draw_text(view, line->type, text, TRUE);
3496 return TRUE;
3497 }
3499 static bool
3500 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3501 {
3502 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3503 char refbuf[SIZEOF_STR];
3504 char *ref = NULL;
3506 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3507 ref = chomp_string(refbuf);
3509 if (!ref || !*ref)
3510 return TRUE;
3512 /* This is the only fatal call, since it can "corrupt" the buffer. */
3513 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3514 return FALSE;
3516 return TRUE;
3517 }
3519 static void
3520 add_pager_refs(struct view *view, struct line *line)
3521 {
3522 char buf[SIZEOF_STR];
3523 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3524 struct ref **refs;
3525 size_t bufpos = 0, refpos = 0;
3526 const char *sep = "Refs: ";
3527 bool is_tag = FALSE;
3529 assert(line->type == LINE_COMMIT);
3531 refs = get_refs(commit_id);
3532 if (!refs) {
3533 if (view == VIEW(REQ_VIEW_DIFF))
3534 goto try_add_describe_ref;
3535 return;
3536 }
3538 do {
3539 struct ref *ref = refs[refpos];
3540 const char *fmt = ref->tag ? "%s[%s]" :
3541 ref->remote ? "%s<%s>" : "%s%s";
3543 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3544 return;
3545 sep = ", ";
3546 if (ref->tag)
3547 is_tag = TRUE;
3548 } while (refs[refpos++]->next);
3550 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3551 try_add_describe_ref:
3552 /* Add <tag>-g<commit_id> "fake" reference. */
3553 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3554 return;
3555 }
3557 if (bufpos == 0)
3558 return;
3560 add_line_text(view, buf, LINE_PP_REFS);
3561 }
3563 static bool
3564 pager_read(struct view *view, char *data)
3565 {
3566 struct line *line;
3568 if (!data)
3569 return TRUE;
3571 line = add_line_text(view, data, get_line_type(data));
3572 if (!line)
3573 return FALSE;
3575 if (line->type == LINE_COMMIT &&
3576 (view == VIEW(REQ_VIEW_DIFF) ||
3577 view == VIEW(REQ_VIEW_LOG)))
3578 add_pager_refs(view, line);
3580 return TRUE;
3581 }
3583 static enum request
3584 pager_request(struct view *view, enum request request, struct line *line)
3585 {
3586 int split = 0;
3588 if (request != REQ_ENTER)
3589 return request;
3591 if (line->type == LINE_COMMIT &&
3592 (view == VIEW(REQ_VIEW_LOG) ||
3593 view == VIEW(REQ_VIEW_PAGER))) {
3594 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3595 split = 1;
3596 }
3598 /* Always scroll the view even if it was split. That way
3599 * you can use Enter to scroll through the log view and
3600 * split open each commit diff. */
3601 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3603 /* FIXME: A minor workaround. Scrolling the view will call report("")
3604 * but if we are scrolling a non-current view this won't properly
3605 * update the view title. */
3606 if (split)
3607 update_view_title(view);
3609 return REQ_NONE;
3610 }
3612 static bool
3613 pager_grep(struct view *view, struct line *line)
3614 {
3615 regmatch_t pmatch;
3616 char *text = line->data;
3618 if (!*text)
3619 return FALSE;
3621 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3622 return FALSE;
3624 return TRUE;
3625 }
3627 static void
3628 pager_select(struct view *view, struct line *line)
3629 {
3630 if (line->type == LINE_COMMIT) {
3631 char *text = (char *)line->data + STRING_SIZE("commit ");
3633 if (view != VIEW(REQ_VIEW_PAGER))
3634 string_copy_rev(view->ref, text);
3635 string_copy_rev(ref_commit, text);
3636 }
3637 }
3639 static struct view_ops pager_ops = {
3640 "line",
3641 NULL,
3642 NULL,
3643 pager_read,
3644 pager_draw,
3645 pager_request,
3646 pager_grep,
3647 pager_select,
3648 };
3650 static const char *log_argv[SIZEOF_ARG] = {
3651 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3652 };
3654 static enum request
3655 log_request(struct view *view, enum request request, struct line *line)
3656 {
3657 switch (request) {
3658 case REQ_REFRESH:
3659 load_refs();
3660 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3661 return REQ_NONE;
3662 default:
3663 return pager_request(view, request, line);
3664 }
3665 }
3667 static struct view_ops log_ops = {
3668 "line",
3669 log_argv,
3670 NULL,
3671 pager_read,
3672 pager_draw,
3673 log_request,
3674 pager_grep,
3675 pager_select,
3676 };
3678 static const char *diff_argv[SIZEOF_ARG] = {
3679 "git", "show", "--pretty=fuller", "--no-color", "--root",
3680 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3681 };
3683 static struct view_ops diff_ops = {
3684 "line",
3685 diff_argv,
3686 NULL,
3687 pager_read,
3688 pager_draw,
3689 pager_request,
3690 pager_grep,
3691 pager_select,
3692 };
3694 /*
3695 * Help backend
3696 */
3698 static bool
3699 help_open(struct view *view)
3700 {
3701 char buf[SIZEOF_STR];
3702 size_t bufpos;
3703 int i;
3705 if (view->lines > 0)
3706 return TRUE;
3708 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3710 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3711 const char *key;
3713 if (req_info[i].request == REQ_NONE)
3714 continue;
3716 if (!req_info[i].request) {
3717 add_line_text(view, "", LINE_DEFAULT);
3718 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3719 continue;
3720 }
3722 key = get_key(req_info[i].request);
3723 if (!*key)
3724 key = "(no key defined)";
3726 for (bufpos = 0; bufpos <= req_info[i].namelen; bufpos++) {
3727 buf[bufpos] = tolower(req_info[i].name[bufpos]);
3728 if (buf[bufpos] == '_')
3729 buf[bufpos] = '-';
3730 }
3732 add_line_format(view, LINE_DEFAULT, " %-25s %-20s %s",
3733 key, buf, req_info[i].help);
3734 }
3736 if (run_requests) {
3737 add_line_text(view, "", LINE_DEFAULT);
3738 add_line_text(view, "External commands:", LINE_DEFAULT);
3739 }
3741 for (i = 0; i < run_requests; i++) {
3742 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3743 const char *key;
3744 int argc;
3746 if (!req)
3747 continue;
3749 key = get_key_name(req->key);
3750 if (!*key)
3751 key = "(no key defined)";
3753 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3754 if (!string_format_from(buf, &bufpos, "%s%s",
3755 argc ? " " : "", req->argv[argc]))
3756 return REQ_NONE;
3758 add_line_format(view, LINE_DEFAULT, " %-10s %-14s `%s`",
3759 keymap_table[req->keymap].name, key, buf);
3760 }
3762 return TRUE;
3763 }
3765 static struct view_ops help_ops = {
3766 "line",
3767 NULL,
3768 help_open,
3769 NULL,
3770 pager_draw,
3771 pager_request,
3772 pager_grep,
3773 pager_select,
3774 };
3777 /*
3778 * Tree backend
3779 */
3781 struct tree_stack_entry {
3782 struct tree_stack_entry *prev; /* Entry below this in the stack */
3783 unsigned long lineno; /* Line number to restore */
3784 char *name; /* Position of name in opt_path */
3785 };
3787 /* The top of the path stack. */
3788 static struct tree_stack_entry *tree_stack = NULL;
3789 unsigned long tree_lineno = 0;
3791 static void
3792 pop_tree_stack_entry(void)
3793 {
3794 struct tree_stack_entry *entry = tree_stack;
3796 tree_lineno = entry->lineno;
3797 entry->name[0] = 0;
3798 tree_stack = entry->prev;
3799 free(entry);
3800 }
3802 static void
3803 push_tree_stack_entry(const char *name, unsigned long lineno)
3804 {
3805 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3806 size_t pathlen = strlen(opt_path);
3808 if (!entry)
3809 return;
3811 entry->prev = tree_stack;
3812 entry->name = opt_path + pathlen;
3813 tree_stack = entry;
3815 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3816 pop_tree_stack_entry();
3817 return;
3818 }
3820 /* Move the current line to the first tree entry. */
3821 tree_lineno = 1;
3822 entry->lineno = lineno;
3823 }
3825 /* Parse output from git-ls-tree(1):
3826 *
3827 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3828 */
3830 #define SIZEOF_TREE_ATTR \
3831 STRING_SIZE("100644 blob f931e1d229c3e185caad4449bf5b66ed72462657\t")
3833 #define SIZEOF_TREE_MODE \
3834 STRING_SIZE("100644 ")
3836 #define TREE_ID_OFFSET \
3837 STRING_SIZE("100644 blob ")
3839 struct tree_entry {
3840 char id[SIZEOF_REV];
3841 mode_t mode;
3842 time_t time; /* Date from the author ident. */
3843 const char *author; /* Author of the commit. */
3844 char name[1];
3845 };
3847 static const char *
3848 tree_path(struct line *line)
3849 {
3850 return ((struct tree_entry *) line->data)->name;
3851 }
3854 static int
3855 tree_compare_entry(struct line *line1, struct line *line2)
3856 {
3857 if (line1->type != line2->type)
3858 return line1->type == LINE_TREE_DIR ? -1 : 1;
3859 return strcmp(tree_path(line1), tree_path(line2));
3860 }
3862 static struct line *
3863 tree_entry(struct view *view, enum line_type type, const char *path,
3864 const char *mode, const char *id)
3865 {
3866 struct tree_entry *entry = calloc(1, sizeof(*entry) + strlen(path));
3867 struct line *line = entry ? add_line_data(view, entry, type) : NULL;
3869 if (!entry || !line) {
3870 free(entry);
3871 return NULL;
3872 }
3874 strncpy(entry->name, path, strlen(path));
3875 if (mode)
3876 entry->mode = strtoul(mode, NULL, 8);
3877 if (id)
3878 string_copy_rev(entry->id, id);
3880 return line;
3881 }
3883 static bool
3884 tree_read_date(struct view *view, char *text, bool *read_date)
3885 {
3886 static const char *author_name;
3887 static time_t author_time;
3889 if (!text && *read_date) {
3890 *read_date = FALSE;
3891 return TRUE;
3893 } else if (!text) {
3894 char *path = *opt_path ? opt_path : ".";
3895 /* Find next entry to process */
3896 const char *log_file[] = {
3897 "git", "log", "--no-color", "--pretty=raw",
3898 "--cc", "--raw", view->id, "--", path, NULL
3899 };
3900 struct io io = {};
3902 if (!view->lines) {
3903 tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL);
3904 report("Tree is empty");
3905 return TRUE;
3906 }
3908 if (!run_io_rd(&io, log_file, FORMAT_NONE)) {
3909 report("Failed to load tree data");
3910 return TRUE;
3911 }
3913 done_io(view->pipe);
3914 view->io = io;
3915 *read_date = TRUE;
3916 return FALSE;
3918 } else if (*text == 'a' && get_line_type(text) == LINE_AUTHOR) {
3919 parse_author_line(text + STRING_SIZE("author "),
3920 &author_name, &author_time);
3922 } else if (*text == ':') {
3923 char *pos;
3924 size_t annotated = 1;
3925 size_t i;
3927 pos = strchr(text, '\t');
3928 if (!pos)
3929 return TRUE;
3930 text = pos + 1;
3931 if (*opt_prefix && !strncmp(text, opt_prefix, strlen(opt_prefix)))
3932 text += strlen(opt_prefix);
3933 if (*opt_path && !strncmp(text, opt_path, strlen(opt_path)))
3934 text += strlen(opt_path);
3935 pos = strchr(text, '/');
3936 if (pos)
3937 *pos = 0;
3939 for (i = 1; i < view->lines; i++) {
3940 struct line *line = &view->line[i];
3941 struct tree_entry *entry = line->data;
3943 annotated += !!entry->author;
3944 if (entry->author || strcmp(entry->name, text))
3945 continue;
3947 entry->author = author_name;
3948 entry->time = author_time;
3949 line->dirty = 1;
3950 break;
3951 }
3953 if (annotated == view->lines)
3954 kill_io(view->pipe);
3955 }
3956 return TRUE;
3957 }
3959 static bool
3960 tree_read(struct view *view, char *text)
3961 {
3962 static bool read_date = FALSE;
3963 struct tree_entry *data;
3964 struct line *entry, *line;
3965 enum line_type type;
3966 size_t textlen = text ? strlen(text) : 0;
3967 char *path = text + SIZEOF_TREE_ATTR;
3969 if (read_date || !text)
3970 return tree_read_date(view, text, &read_date);
3972 if (textlen <= SIZEOF_TREE_ATTR)
3973 return FALSE;
3974 if (view->lines == 0 &&
3975 !tree_entry(view, LINE_TREE_HEAD, opt_path, NULL, NULL))
3976 return FALSE;
3978 /* Strip the path part ... */
3979 if (*opt_path) {
3980 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3981 size_t striplen = strlen(opt_path);
3983 if (pathlen > striplen)
3984 memmove(path, path + striplen,
3985 pathlen - striplen + 1);
3987 /* Insert "link" to parent directory. */
3988 if (view->lines == 1 &&
3989 !tree_entry(view, LINE_TREE_DIR, "..", "040000", view->ref))
3990 return FALSE;
3991 }
3993 type = text[SIZEOF_TREE_MODE] == 't' ? LINE_TREE_DIR : LINE_TREE_FILE;
3994 entry = tree_entry(view, type, path, text, text + TREE_ID_OFFSET);
3995 if (!entry)
3996 return FALSE;
3997 data = entry->data;
3999 /* Skip "Directory ..." and ".." line. */
4000 for (line = &view->line[1 + !!*opt_path]; line < entry; line++) {
4001 if (tree_compare_entry(line, entry) <= 0)
4002 continue;
4004 memmove(line + 1, line, (entry - line) * sizeof(*entry));
4006 line->data = data;
4007 line->type = type;
4008 for (; line <= entry; line++)
4009 line->dirty = line->cleareol = 1;
4010 return TRUE;
4011 }
4013 if (tree_lineno > view->lineno) {
4014 view->lineno = tree_lineno;
4015 tree_lineno = 0;
4016 }
4018 return TRUE;
4019 }
4021 static bool
4022 tree_draw(struct view *view, struct line *line, unsigned int lineno)
4023 {
4024 struct tree_entry *entry = line->data;
4026 if (line->type == LINE_TREE_HEAD) {
4027 if (draw_text(view, line->type, "Directory path /", TRUE))
4028 return TRUE;
4029 } else {
4030 if (draw_mode(view, entry->mode))
4031 return TRUE;
4033 if (opt_author && draw_author(view, entry->author))
4034 return TRUE;
4036 if (opt_date && draw_date(view, entry->author ? &entry->time : NULL))
4037 return TRUE;
4038 }
4039 if (draw_text(view, line->type, entry->name, TRUE))
4040 return TRUE;
4041 return TRUE;
4042 }
4044 static void
4045 open_blob_editor()
4046 {
4047 char file[SIZEOF_STR] = "/tmp/tigblob.XXXXXX";
4048 int fd = mkstemp(file);
4050 if (fd == -1)
4051 report("Failed to create temporary file");
4052 else if (!run_io_append(blob_ops.argv, FORMAT_ALL, fd))
4053 report("Failed to save blob data to file");
4054 else
4055 open_editor(FALSE, file);
4056 if (fd != -1)
4057 unlink(file);
4058 }
4060 static enum request
4061 tree_request(struct view *view, enum request request, struct line *line)
4062 {
4063 enum open_flags flags;
4065 switch (request) {
4066 case REQ_VIEW_BLAME:
4067 if (line->type != LINE_TREE_FILE) {
4068 report("Blame only supported for files");
4069 return REQ_NONE;
4070 }
4072 string_copy(opt_ref, view->vid);
4073 return request;
4075 case REQ_EDIT:
4076 if (line->type != LINE_TREE_FILE) {
4077 report("Edit only supported for files");
4078 } else if (!is_head_commit(view->vid)) {
4079 open_blob_editor();
4080 } else {
4081 open_editor(TRUE, opt_file);
4082 }
4083 return REQ_NONE;
4085 case REQ_PARENT:
4086 if (!*opt_path) {
4087 /* quit view if at top of tree */
4088 return REQ_VIEW_CLOSE;
4089 }
4090 /* fake 'cd ..' */
4091 line = &view->line[1];
4092 break;
4094 case REQ_ENTER:
4095 break;
4097 default:
4098 return request;
4099 }
4101 /* Cleanup the stack if the tree view is at a different tree. */
4102 while (!*opt_path && tree_stack)
4103 pop_tree_stack_entry();
4105 switch (line->type) {
4106 case LINE_TREE_DIR:
4107 /* Depending on whether it is a subdirectory or parent link
4108 * mangle the path buffer. */
4109 if (line == &view->line[1] && *opt_path) {
4110 pop_tree_stack_entry();
4112 } else {
4113 const char *basename = tree_path(line);
4115 push_tree_stack_entry(basename, view->lineno);
4116 }
4118 /* Trees and subtrees share the same ID, so they are not not
4119 * unique like blobs. */
4120 flags = OPEN_RELOAD;
4121 request = REQ_VIEW_TREE;
4122 break;
4124 case LINE_TREE_FILE:
4125 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4126 request = REQ_VIEW_BLOB;
4127 break;
4129 default:
4130 return REQ_NONE;
4131 }
4133 open_view(view, request, flags);
4134 if (request == REQ_VIEW_TREE)
4135 view->lineno = tree_lineno;
4137 return REQ_NONE;
4138 }
4140 static void
4141 tree_select(struct view *view, struct line *line)
4142 {
4143 struct tree_entry *entry = line->data;
4145 if (line->type == LINE_TREE_FILE) {
4146 string_copy_rev(ref_blob, entry->id);
4147 string_format(opt_file, "%s%s", opt_path, tree_path(line));
4149 } else if (line->type != LINE_TREE_DIR) {
4150 return;
4151 }
4153 string_copy_rev(view->ref, entry->id);
4154 }
4156 static const char *tree_argv[SIZEOF_ARG] = {
4157 "git", "ls-tree", "%(commit)", "%(directory)", NULL
4158 };
4160 static struct view_ops tree_ops = {
4161 "file",
4162 tree_argv,
4163 NULL,
4164 tree_read,
4165 tree_draw,
4166 tree_request,
4167 pager_grep,
4168 tree_select,
4169 };
4171 static bool
4172 blob_read(struct view *view, char *line)
4173 {
4174 if (!line)
4175 return TRUE;
4176 return add_line_text(view, line, LINE_DEFAULT) != NULL;
4177 }
4179 static enum request
4180 blob_request(struct view *view, enum request request, struct line *line)
4181 {
4182 switch (request) {
4183 case REQ_EDIT:
4184 open_blob_editor();
4185 return REQ_NONE;
4186 default:
4187 return pager_request(view, request, line);
4188 }
4189 }
4191 static const char *blob_argv[SIZEOF_ARG] = {
4192 "git", "cat-file", "blob", "%(blob)", NULL
4193 };
4195 static struct view_ops blob_ops = {
4196 "line",
4197 blob_argv,
4198 NULL,
4199 blob_read,
4200 pager_draw,
4201 blob_request,
4202 pager_grep,
4203 pager_select,
4204 };
4206 /*
4207 * Blame backend
4208 *
4209 * Loading the blame view is a two phase job:
4210 *
4211 * 1. File content is read either using opt_file from the
4212 * filesystem or using git-cat-file.
4213 * 2. Then blame information is incrementally added by
4214 * reading output from git-blame.
4215 */
4217 static const char *blame_head_argv[] = {
4218 "git", "blame", "--incremental", "--", "%(file)", NULL
4219 };
4221 static const char *blame_ref_argv[] = {
4222 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
4223 };
4225 static const char *blame_cat_file_argv[] = {
4226 "git", "cat-file", "blob", "%(ref):%(file)", NULL
4227 };
4229 struct blame_commit {
4230 char id[SIZEOF_REV]; /* SHA1 ID. */
4231 char title[128]; /* First line of the commit message. */
4232 const char *author; /* Author of the commit. */
4233 time_t time; /* Date from the author ident. */
4234 char filename[128]; /* Name of file. */
4235 bool has_previous; /* Was a "previous" line detected. */
4236 };
4238 struct blame {
4239 struct blame_commit *commit;
4240 unsigned long lineno;
4241 char text[1];
4242 };
4244 static bool
4245 blame_open(struct view *view)
4246 {
4247 if (*opt_ref || !io_open(&view->io, opt_file)) {
4248 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
4249 return FALSE;
4250 }
4252 setup_update(view, opt_file);
4253 string_format(view->ref, "%s ...", opt_file);
4255 return TRUE;
4256 }
4258 static struct blame_commit *
4259 get_blame_commit(struct view *view, const char *id)
4260 {
4261 size_t i;
4263 for (i = 0; i < view->lines; i++) {
4264 struct blame *blame = view->line[i].data;
4266 if (!blame->commit)
4267 continue;
4269 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
4270 return blame->commit;
4271 }
4273 {
4274 struct blame_commit *commit = calloc(1, sizeof(*commit));
4276 if (commit)
4277 string_ncopy(commit->id, id, SIZEOF_REV);
4278 return commit;
4279 }
4280 }
4282 static bool
4283 parse_number(const char **posref, size_t *number, size_t min, size_t max)
4284 {
4285 const char *pos = *posref;
4287 *posref = NULL;
4288 pos = strchr(pos + 1, ' ');
4289 if (!pos || !isdigit(pos[1]))
4290 return FALSE;
4291 *number = atoi(pos + 1);
4292 if (*number < min || *number > max)
4293 return FALSE;
4295 *posref = pos;
4296 return TRUE;
4297 }
4299 static struct blame_commit *
4300 parse_blame_commit(struct view *view, const char *text, int *blamed)
4301 {
4302 struct blame_commit *commit;
4303 struct blame *blame;
4304 const char *pos = text + SIZEOF_REV - 2;
4305 size_t orig_lineno = 0;
4306 size_t lineno;
4307 size_t group;
4309 if (strlen(text) <= SIZEOF_REV || pos[1] != ' ')
4310 return NULL;
4312 if (!parse_number(&pos, &orig_lineno, 1, 9999999) ||
4313 !parse_number(&pos, &lineno, 1, view->lines) ||
4314 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
4315 return NULL;
4317 commit = get_blame_commit(view, text);
4318 if (!commit)
4319 return NULL;
4321 *blamed += group;
4322 while (group--) {
4323 struct line *line = &view->line[lineno + group - 1];
4325 blame = line->data;
4326 blame->commit = commit;
4327 blame->lineno = orig_lineno + group - 1;
4328 line->dirty = 1;
4329 }
4331 return commit;
4332 }
4334 static bool
4335 blame_read_file(struct view *view, const char *line, bool *read_file)
4336 {
4337 if (!line) {
4338 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
4339 struct io io = {};
4341 if (view->lines == 0 && !view->parent)
4342 die("No blame exist for %s", view->vid);
4344 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
4345 report("Failed to load blame data");
4346 return TRUE;
4347 }
4349 done_io(view->pipe);
4350 view->io = io;
4351 *read_file = FALSE;
4352 return FALSE;
4354 } else {
4355 size_t linelen = strlen(line);
4356 struct blame *blame = malloc(sizeof(*blame) + linelen);
4358 if (!blame)
4359 return FALSE;
4361 blame->commit = NULL;
4362 strncpy(blame->text, line, linelen);
4363 blame->text[linelen] = 0;
4364 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
4365 }
4366 }
4368 static bool
4369 match_blame_header(const char *name, char **line)
4370 {
4371 size_t namelen = strlen(name);
4372 bool matched = !strncmp(name, *line, namelen);
4374 if (matched)
4375 *line += namelen;
4377 return matched;
4378 }
4380 static bool
4381 blame_read(struct view *view, char *line)
4382 {
4383 static struct blame_commit *commit = NULL;
4384 static int blamed = 0;
4385 static bool read_file = TRUE;
4387 if (read_file)
4388 return blame_read_file(view, line, &read_file);
4390 if (!line) {
4391 /* Reset all! */
4392 commit = NULL;
4393 blamed = 0;
4394 read_file = TRUE;
4395 string_format(view->ref, "%s", view->vid);
4396 if (view_is_displayed(view)) {
4397 update_view_title(view);
4398 redraw_view_from(view, 0);
4399 }
4400 return TRUE;
4401 }
4403 if (!commit) {
4404 commit = parse_blame_commit(view, line, &blamed);
4405 string_format(view->ref, "%s %2d%%", view->vid,
4406 view->lines ? blamed * 100 / view->lines : 0);
4408 } else if (match_blame_header("author ", &line)) {
4409 commit->author = get_author(line);
4411 } else if (match_blame_header("author-time ", &line)) {
4412 commit->time = (time_t) atol(line);
4414 } else if (match_blame_header("author-tz ", &line)) {
4415 parse_timezone(&commit->time, line);
4417 } else if (match_blame_header("summary ", &line)) {
4418 string_ncopy(commit->title, line, strlen(line));
4420 } else if (match_blame_header("previous ", &line)) {
4421 commit->has_previous = TRUE;
4423 } else if (match_blame_header("filename ", &line)) {
4424 string_ncopy(commit->filename, line, strlen(line));
4425 commit = NULL;
4426 }
4428 return TRUE;
4429 }
4431 static bool
4432 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4433 {
4434 struct blame *blame = line->data;
4435 time_t *time = NULL;
4436 const char *id = NULL, *author = NULL;
4437 char text[SIZEOF_STR];
4439 if (blame->commit && *blame->commit->filename) {
4440 id = blame->commit->id;
4441 author = blame->commit->author;
4442 time = &blame->commit->time;
4443 }
4445 if (opt_date && draw_date(view, time))
4446 return TRUE;
4448 if (opt_author && draw_author(view, author))
4449 return TRUE;
4451 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4452 return TRUE;
4454 if (draw_lineno(view, lineno))
4455 return TRUE;
4457 string_expand(text, sizeof(text), blame->text, opt_tab_size);
4458 draw_text(view, LINE_DEFAULT, text, TRUE);
4459 return TRUE;
4460 }
4462 static bool
4463 check_blame_commit(struct blame *blame, bool check_null_id)
4464 {
4465 if (!blame->commit)
4466 report("Commit data not loaded yet");
4467 else if (check_null_id && !strcmp(blame->commit->id, NULL_ID))
4468 report("No commit exist for the selected line");
4469 else
4470 return TRUE;
4471 return FALSE;
4472 }
4474 static void
4475 setup_blame_parent_line(struct view *view, struct blame *blame)
4476 {
4477 const char *diff_tree_argv[] = {
4478 "git", "diff-tree", "-U0", blame->commit->id,
4479 "--", blame->commit->filename, NULL
4480 };
4481 struct io io = {};
4482 int parent_lineno = -1;
4483 int blamed_lineno = -1;
4484 char *line;
4486 if (!run_io(&io, diff_tree_argv, NULL, IO_RD))
4487 return;
4489 while ((line = io_get(&io, '\n', TRUE))) {
4490 if (*line == '@') {
4491 char *pos = strchr(line, '+');
4493 parent_lineno = atoi(line + 4);
4494 if (pos)
4495 blamed_lineno = atoi(pos + 1);
4497 } else if (*line == '+' && parent_lineno != -1) {
4498 if (blame->lineno == blamed_lineno - 1 &&
4499 !strcmp(blame->text, line + 1)) {
4500 view->lineno = parent_lineno ? parent_lineno - 1 : 0;
4501 break;
4502 }
4503 blamed_lineno++;
4504 }
4505 }
4507 done_io(&io);
4508 }
4510 static enum request
4511 blame_request(struct view *view, enum request request, struct line *line)
4512 {
4513 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4514 struct blame *blame = line->data;
4516 switch (request) {
4517 case REQ_VIEW_BLAME:
4518 if (check_blame_commit(blame, TRUE)) {
4519 string_copy(opt_ref, blame->commit->id);
4520 string_copy(opt_file, blame->commit->filename);
4521 if (blame->lineno)
4522 view->lineno = blame->lineno;
4523 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4524 }
4525 break;
4527 case REQ_PARENT:
4528 if (check_blame_commit(blame, TRUE) &&
4529 select_commit_parent(blame->commit->id, opt_ref,
4530 blame->commit->filename)) {
4531 string_copy(opt_file, blame->commit->filename);
4532 setup_blame_parent_line(view, blame);
4533 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4534 }
4535 break;
4537 case REQ_ENTER:
4538 if (!check_blame_commit(blame, FALSE))
4539 break;
4541 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4542 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4543 break;
4545 if (!strcmp(blame->commit->id, NULL_ID)) {
4546 struct view *diff = VIEW(REQ_VIEW_DIFF);
4547 const char *diff_index_argv[] = {
4548 "git", "diff-index", "--root", "--patch-with-stat",
4549 "-C", "-M", "HEAD", "--", view->vid, NULL
4550 };
4552 if (!blame->commit->has_previous) {
4553 diff_index_argv[1] = "diff";
4554 diff_index_argv[2] = "--no-color";
4555 diff_index_argv[6] = "--";
4556 diff_index_argv[7] = "/dev/null";
4557 }
4559 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4560 report("Failed to allocate diff command");
4561 break;
4562 }
4563 flags |= OPEN_PREPARED;
4564 }
4566 open_view(view, REQ_VIEW_DIFF, flags);
4567 if (VIEW(REQ_VIEW_DIFF)->pipe && !strcmp(blame->commit->id, NULL_ID))
4568 string_copy_rev(VIEW(REQ_VIEW_DIFF)->ref, NULL_ID);
4569 break;
4571 default:
4572 return request;
4573 }
4575 return REQ_NONE;
4576 }
4578 static bool
4579 blame_grep(struct view *view, struct line *line)
4580 {
4581 struct blame *blame = line->data;
4582 struct blame_commit *commit = blame->commit;
4583 regmatch_t pmatch;
4585 #define MATCH(text, on) \
4586 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4588 if (commit) {
4589 if (MATCH(commit->title, 1) ||
4590 MATCH(commit->author, opt_author) ||
4591 MATCH(commit->id, opt_date))
4592 return TRUE;
4594 if (MATCH(mkdate(&commit->time), 1))
4595 return TRUE;
4596 }
4598 return MATCH(blame->text, 1);
4600 #undef MATCH
4601 }
4603 static void
4604 blame_select(struct view *view, struct line *line)
4605 {
4606 struct blame *blame = line->data;
4607 struct blame_commit *commit = blame->commit;
4609 if (!commit)
4610 return;
4612 if (!strcmp(commit->id, NULL_ID))
4613 string_ncopy(ref_commit, "HEAD", 4);
4614 else
4615 string_copy_rev(ref_commit, commit->id);
4616 }
4618 static struct view_ops blame_ops = {
4619 "line",
4620 NULL,
4621 blame_open,
4622 blame_read,
4623 blame_draw,
4624 blame_request,
4625 blame_grep,
4626 blame_select,
4627 };
4629 /*
4630 * Status backend
4631 */
4633 struct status {
4634 char status;
4635 struct {
4636 mode_t mode;
4637 char rev[SIZEOF_REV];
4638 char name[SIZEOF_STR];
4639 } old;
4640 struct {
4641 mode_t mode;
4642 char rev[SIZEOF_REV];
4643 char name[SIZEOF_STR];
4644 } new;
4645 };
4647 static char status_onbranch[SIZEOF_STR];
4648 static struct status stage_status;
4649 static enum line_type stage_line_type;
4650 static size_t stage_chunks;
4651 static int *stage_chunk;
4653 /* This should work even for the "On branch" line. */
4654 static inline bool
4655 status_has_none(struct view *view, struct line *line)
4656 {
4657 return line < view->line + view->lines && !line[1].data;
4658 }
4660 /* Get fields from the diff line:
4661 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4662 */
4663 static inline bool
4664 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4665 {
4666 const char *old_mode = buf + 1;
4667 const char *new_mode = buf + 8;
4668 const char *old_rev = buf + 15;
4669 const char *new_rev = buf + 56;
4670 const char *status = buf + 97;
4672 if (bufsize < 98 ||
4673 old_mode[-1] != ':' ||
4674 new_mode[-1] != ' ' ||
4675 old_rev[-1] != ' ' ||
4676 new_rev[-1] != ' ' ||
4677 status[-1] != ' ')
4678 return FALSE;
4680 file->status = *status;
4682 string_copy_rev(file->old.rev, old_rev);
4683 string_copy_rev(file->new.rev, new_rev);
4685 file->old.mode = strtoul(old_mode, NULL, 8);
4686 file->new.mode = strtoul(new_mode, NULL, 8);
4688 file->old.name[0] = file->new.name[0] = 0;
4690 return TRUE;
4691 }
4693 static bool
4694 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4695 {
4696 struct status *unmerged = NULL;
4697 char *buf;
4698 struct io io = {};
4700 if (!run_io(&io, argv, NULL, IO_RD))
4701 return FALSE;
4703 add_line_data(view, NULL, type);
4705 while ((buf = io_get(&io, 0, TRUE))) {
4706 struct status *file = unmerged;
4708 if (!file) {
4709 file = calloc(1, sizeof(*file));
4710 if (!file || !add_line_data(view, file, type))
4711 goto error_out;
4712 }
4714 /* Parse diff info part. */
4715 if (status) {
4716 file->status = status;
4717 if (status == 'A')
4718 string_copy(file->old.rev, NULL_ID);
4720 } else if (!file->status || file == unmerged) {
4721 if (!status_get_diff(file, buf, strlen(buf)))
4722 goto error_out;
4724 buf = io_get(&io, 0, TRUE);
4725 if (!buf)
4726 break;
4728 /* Collapse all modified entries that follow an
4729 * associated unmerged entry. */
4730 if (unmerged == file) {
4731 unmerged->status = 'U';
4732 unmerged = NULL;
4733 } else if (file->status == 'U') {
4734 unmerged = file;
4735 }
4736 }
4738 /* Grab the old name for rename/copy. */
4739 if (!*file->old.name &&
4740 (file->status == 'R' || file->status == 'C')) {
4741 string_ncopy(file->old.name, buf, strlen(buf));
4743 buf = io_get(&io, 0, TRUE);
4744 if (!buf)
4745 break;
4746 }
4748 /* git-ls-files just delivers a NUL separated list of
4749 * file names similar to the second half of the
4750 * git-diff-* output. */
4751 string_ncopy(file->new.name, buf, strlen(buf));
4752 if (!*file->old.name)
4753 string_copy(file->old.name, file->new.name);
4754 file = NULL;
4755 }
4757 if (io_error(&io)) {
4758 error_out:
4759 done_io(&io);
4760 return FALSE;
4761 }
4763 if (!view->line[view->lines - 1].data)
4764 add_line_data(view, NULL, LINE_STAT_NONE);
4766 done_io(&io);
4767 return TRUE;
4768 }
4770 /* Don't show unmerged entries in the staged section. */
4771 static const char *status_diff_index_argv[] = {
4772 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4773 "--cached", "-M", "HEAD", NULL
4774 };
4776 static const char *status_diff_files_argv[] = {
4777 "git", "diff-files", "-z", NULL
4778 };
4780 static const char *status_list_other_argv[] = {
4781 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4782 };
4784 static const char *status_list_no_head_argv[] = {
4785 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4786 };
4788 static const char *update_index_argv[] = {
4789 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4790 };
4792 /* Restore the previous line number to stay in the context or select a
4793 * line with something that can be updated. */
4794 static void
4795 status_restore(struct view *view)
4796 {
4797 if (view->p_lineno >= view->lines)
4798 view->p_lineno = view->lines - 1;
4799 while (view->p_lineno < view->lines && !view->line[view->p_lineno].data)
4800 view->p_lineno++;
4801 while (view->p_lineno > 0 && !view->line[view->p_lineno].data)
4802 view->p_lineno--;
4804 /* If the above fails, always skip the "On branch" line. */
4805 if (view->p_lineno < view->lines)
4806 view->lineno = view->p_lineno;
4807 else
4808 view->lineno = 1;
4810 if (view->lineno < view->offset)
4811 view->offset = view->lineno;
4812 else if (view->offset + view->height <= view->lineno)
4813 view->offset = view->lineno - view->height + 1;
4815 view->p_restore = FALSE;
4816 }
4818 static void
4819 status_update_onbranch(void)
4820 {
4821 static const char *paths[][2] = {
4822 { "rebase-apply/rebasing", "Rebasing" },
4823 { "rebase-apply/applying", "Applying mailbox" },
4824 { "rebase-apply/", "Rebasing mailbox" },
4825 { "rebase-merge/interactive", "Interactive rebase" },
4826 { "rebase-merge/", "Rebase merge" },
4827 { "MERGE_HEAD", "Merging" },
4828 { "BISECT_LOG", "Bisecting" },
4829 { "HEAD", "On branch" },
4830 };
4831 char buf[SIZEOF_STR];
4832 struct stat stat;
4833 int i;
4835 if (is_initial_commit()) {
4836 string_copy(status_onbranch, "Initial commit");
4837 return;
4838 }
4840 for (i = 0; i < ARRAY_SIZE(paths); i++) {
4841 char *head = opt_head;
4843 if (!string_format(buf, "%s/%s", opt_git_dir, paths[i][0]) ||
4844 lstat(buf, &stat) < 0)
4845 continue;
4847 if (!*opt_head) {
4848 struct io io = {};
4850 if (string_format(buf, "%s/rebase-merge/head-name", opt_git_dir) &&
4851 io_open(&io, buf) &&
4852 io_read_buf(&io, buf, sizeof(buf))) {
4853 head = chomp_string(buf);
4854 if (!prefixcmp(head, "refs/heads/"))
4855 head += STRING_SIZE("refs/heads/");
4856 }
4857 }
4859 if (!string_format(status_onbranch, "%s %s", paths[i][1], head))
4860 string_copy(status_onbranch, opt_head);
4861 return;
4862 }
4864 string_copy(status_onbranch, "Not currently on any branch");
4865 }
4867 /* First parse staged info using git-diff-index(1), then parse unstaged
4868 * info using git-diff-files(1), and finally untracked files using
4869 * git-ls-files(1). */
4870 static bool
4871 status_open(struct view *view)
4872 {
4873 reset_view(view);
4875 add_line_data(view, NULL, LINE_STAT_HEAD);
4876 status_update_onbranch();
4878 run_io_bg(update_index_argv);
4880 if (is_initial_commit()) {
4881 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4882 return FALSE;
4883 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4884 return FALSE;
4885 }
4887 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4888 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4889 return FALSE;
4891 /* Restore the exact position or use the specialized restore
4892 * mode? */
4893 if (!view->p_restore)
4894 status_restore(view);
4895 return TRUE;
4896 }
4898 static bool
4899 status_draw(struct view *view, struct line *line, unsigned int lineno)
4900 {
4901 struct status *status = line->data;
4902 enum line_type type;
4903 const char *text;
4905 if (!status) {
4906 switch (line->type) {
4907 case LINE_STAT_STAGED:
4908 type = LINE_STAT_SECTION;
4909 text = "Changes to be committed:";
4910 break;
4912 case LINE_STAT_UNSTAGED:
4913 type = LINE_STAT_SECTION;
4914 text = "Changed but not updated:";
4915 break;
4917 case LINE_STAT_UNTRACKED:
4918 type = LINE_STAT_SECTION;
4919 text = "Untracked files:";
4920 break;
4922 case LINE_STAT_NONE:
4923 type = LINE_DEFAULT;
4924 text = " (no files)";
4925 break;
4927 case LINE_STAT_HEAD:
4928 type = LINE_STAT_HEAD;
4929 text = status_onbranch;
4930 break;
4932 default:
4933 return FALSE;
4934 }
4935 } else {
4936 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4938 buf[0] = status->status;
4939 if (draw_text(view, line->type, buf, TRUE))
4940 return TRUE;
4941 type = LINE_DEFAULT;
4942 text = status->new.name;
4943 }
4945 draw_text(view, type, text, TRUE);
4946 return TRUE;
4947 }
4949 static enum request
4950 status_load_error(struct view *view, struct view *stage, const char *path)
4951 {
4952 if (displayed_views() == 2 || display[current_view] != view)
4953 maximize_view(view);
4954 report("Failed to load '%s': %s", path, io_strerror(&stage->io));
4955 return REQ_NONE;
4956 }
4958 static enum request
4959 status_enter(struct view *view, struct line *line)
4960 {
4961 struct status *status = line->data;
4962 const char *oldpath = status ? status->old.name : NULL;
4963 /* Diffs for unmerged entries are empty when passing the new
4964 * path, so leave it empty. */
4965 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4966 const char *info;
4967 enum open_flags split;
4968 struct view *stage = VIEW(REQ_VIEW_STAGE);
4970 if (line->type == LINE_STAT_NONE ||
4971 (!status && line[1].type == LINE_STAT_NONE)) {
4972 report("No file to diff");
4973 return REQ_NONE;
4974 }
4976 switch (line->type) {
4977 case LINE_STAT_STAGED:
4978 if (is_initial_commit()) {
4979 const char *no_head_diff_argv[] = {
4980 "git", "diff", "--no-color", "--patch-with-stat",
4981 "--", "/dev/null", newpath, NULL
4982 };
4984 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4985 return status_load_error(view, stage, newpath);
4986 } else {
4987 const char *index_show_argv[] = {
4988 "git", "diff-index", "--root", "--patch-with-stat",
4989 "-C", "-M", "--cached", "HEAD", "--",
4990 oldpath, newpath, NULL
4991 };
4993 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4994 return status_load_error(view, stage, newpath);
4995 }
4997 if (status)
4998 info = "Staged changes to %s";
4999 else
5000 info = "Staged changes";
5001 break;
5003 case LINE_STAT_UNSTAGED:
5004 {
5005 const char *files_show_argv[] = {
5006 "git", "diff-files", "--root", "--patch-with-stat",
5007 "-C", "-M", "--", oldpath, newpath, NULL
5008 };
5010 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
5011 return status_load_error(view, stage, newpath);
5012 if (status)
5013 info = "Unstaged changes to %s";
5014 else
5015 info = "Unstaged changes";
5016 break;
5017 }
5018 case LINE_STAT_UNTRACKED:
5019 if (!newpath) {
5020 report("No file to show");
5021 return REQ_NONE;
5022 }
5024 if (!suffixcmp(status->new.name, -1, "/")) {
5025 report("Cannot display a directory");
5026 return REQ_NONE;
5027 }
5029 if (!prepare_update_file(stage, newpath))
5030 return status_load_error(view, stage, newpath);
5031 info = "Untracked file %s";
5032 break;
5034 case LINE_STAT_HEAD:
5035 return REQ_NONE;
5037 default:
5038 die("line type %d not handled in switch", line->type);
5039 }
5041 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
5042 open_view(view, REQ_VIEW_STAGE, OPEN_PREPARED | split);
5043 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
5044 if (status) {
5045 stage_status = *status;
5046 } else {
5047 memset(&stage_status, 0, sizeof(stage_status));
5048 }
5050 stage_line_type = line->type;
5051 stage_chunks = 0;
5052 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
5053 }
5055 return REQ_NONE;
5056 }
5058 static bool
5059 status_exists(struct status *status, enum line_type type)
5060 {
5061 struct view *view = VIEW(REQ_VIEW_STATUS);
5062 unsigned long lineno;
5064 for (lineno = 0; lineno < view->lines; lineno++) {
5065 struct line *line = &view->line[lineno];
5066 struct status *pos = line->data;
5068 if (line->type != type)
5069 continue;
5070 if (!pos && (!status || !status->status) && line[1].data) {
5071 select_view_line(view, lineno);
5072 return TRUE;
5073 }
5074 if (pos && !strcmp(status->new.name, pos->new.name)) {
5075 select_view_line(view, lineno);
5076 return TRUE;
5077 }
5078 }
5080 return FALSE;
5081 }
5084 static bool
5085 status_update_prepare(struct io *io, enum line_type type)
5086 {
5087 const char *staged_argv[] = {
5088 "git", "update-index", "-z", "--index-info", NULL
5089 };
5090 const char *others_argv[] = {
5091 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
5092 };
5094 switch (type) {
5095 case LINE_STAT_STAGED:
5096 return run_io(io, staged_argv, opt_cdup, IO_WR);
5098 case LINE_STAT_UNSTAGED:
5099 return run_io(io, others_argv, opt_cdup, IO_WR);
5101 case LINE_STAT_UNTRACKED:
5102 return run_io(io, others_argv, NULL, IO_WR);
5104 default:
5105 die("line type %d not handled in switch", type);
5106 return FALSE;
5107 }
5108 }
5110 static bool
5111 status_update_write(struct io *io, struct status *status, enum line_type type)
5112 {
5113 char buf[SIZEOF_STR];
5114 size_t bufsize = 0;
5116 switch (type) {
5117 case LINE_STAT_STAGED:
5118 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
5119 status->old.mode,
5120 status->old.rev,
5121 status->old.name, 0))
5122 return FALSE;
5123 break;
5125 case LINE_STAT_UNSTAGED:
5126 case LINE_STAT_UNTRACKED:
5127 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
5128 return FALSE;
5129 break;
5131 default:
5132 die("line type %d not handled in switch", type);
5133 }
5135 return io_write(io, buf, bufsize);
5136 }
5138 static bool
5139 status_update_file(struct status *status, enum line_type type)
5140 {
5141 struct io io = {};
5142 bool result;
5144 if (!status_update_prepare(&io, type))
5145 return FALSE;
5147 result = status_update_write(&io, status, type);
5148 return done_io(&io) && result;
5149 }
5151 static bool
5152 status_update_files(struct view *view, struct line *line)
5153 {
5154 char buf[sizeof(view->ref)];
5155 struct io io = {};
5156 bool result = TRUE;
5157 struct line *pos = view->line + view->lines;
5158 int files = 0;
5159 int file, done;
5160 int cursor_y, cursor_x;
5162 if (!status_update_prepare(&io, line->type))
5163 return FALSE;
5165 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
5166 files++;
5168 string_copy(buf, view->ref);
5169 getsyx(cursor_y, cursor_x);
5170 for (file = 0, done = 5; result && file < files; line++, file++) {
5171 int almost_done = file * 100 / files;
5173 if (almost_done > done) {
5174 done = almost_done;
5175 string_format(view->ref, "updating file %u of %u (%d%% done)",
5176 file, files, done);
5177 update_view_title(view);
5178 setsyx(cursor_y, cursor_x);
5179 doupdate();
5180 }
5181 result = status_update_write(&io, line->data, line->type);
5182 }
5183 string_copy(view->ref, buf);
5185 return done_io(&io) && result;
5186 }
5188 static bool
5189 status_update(struct view *view)
5190 {
5191 struct line *line = &view->line[view->lineno];
5193 assert(view->lines);
5195 if (!line->data) {
5196 /* This should work even for the "On branch" line. */
5197 if (line < view->line + view->lines && !line[1].data) {
5198 report("Nothing to update");
5199 return FALSE;
5200 }
5202 if (!status_update_files(view, line + 1)) {
5203 report("Failed to update file status");
5204 return FALSE;
5205 }
5207 } else if (!status_update_file(line->data, line->type)) {
5208 report("Failed to update file status");
5209 return FALSE;
5210 }
5212 return TRUE;
5213 }
5215 static bool
5216 status_revert(struct status *status, enum line_type type, bool has_none)
5217 {
5218 if (!status || type != LINE_STAT_UNSTAGED) {
5219 if (type == LINE_STAT_STAGED) {
5220 report("Cannot revert changes to staged files");
5221 } else if (type == LINE_STAT_UNTRACKED) {
5222 report("Cannot revert changes to untracked files");
5223 } else if (has_none) {
5224 report("Nothing to revert");
5225 } else {
5226 report("Cannot revert changes to multiple files");
5227 }
5228 return FALSE;
5230 } else {
5231 char mode[10] = "100644";
5232 const char *reset_argv[] = {
5233 "git", "update-index", "--cacheinfo", mode,
5234 status->old.rev, status->old.name, NULL
5235 };
5236 const char *checkout_argv[] = {
5237 "git", "checkout", "--", status->old.name, NULL
5238 };
5240 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
5241 return FALSE;
5242 string_format(mode, "%o", status->old.mode);
5243 return (status->status != 'U' || run_io_fg(reset_argv, opt_cdup)) &&
5244 run_io_fg(checkout_argv, opt_cdup);
5245 }
5246 }
5248 static enum request
5249 status_request(struct view *view, enum request request, struct line *line)
5250 {
5251 struct status *status = line->data;
5253 switch (request) {
5254 case REQ_STATUS_UPDATE:
5255 if (!status_update(view))
5256 return REQ_NONE;
5257 break;
5259 case REQ_STATUS_REVERT:
5260 if (!status_revert(status, line->type, status_has_none(view, line)))
5261 return REQ_NONE;
5262 break;
5264 case REQ_STATUS_MERGE:
5265 if (!status || status->status != 'U') {
5266 report("Merging only possible for files with unmerged status ('U').");
5267 return REQ_NONE;
5268 }
5269 open_mergetool(status->new.name);
5270 break;
5272 case REQ_EDIT:
5273 if (!status)
5274 return request;
5275 if (status->status == 'D') {
5276 report("File has been deleted.");
5277 return REQ_NONE;
5278 }
5280 open_editor(status->status != '?', status->new.name);
5281 break;
5283 case REQ_VIEW_BLAME:
5284 if (status) {
5285 string_copy(opt_file, status->new.name);
5286 opt_ref[0] = 0;
5287 }
5288 return request;
5290 case REQ_ENTER:
5291 /* After returning the status view has been split to
5292 * show the stage view. No further reloading is
5293 * necessary. */
5294 return status_enter(view, line);
5296 case REQ_REFRESH:
5297 /* Simply reload the view. */
5298 break;
5300 default:
5301 return request;
5302 }
5304 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
5306 return REQ_NONE;
5307 }
5309 static void
5310 status_select(struct view *view, struct line *line)
5311 {
5312 struct status *status = line->data;
5313 char file[SIZEOF_STR] = "all files";
5314 const char *text;
5315 const char *key;
5317 if (status && !string_format(file, "'%s'", status->new.name))
5318 return;
5320 if (!status && line[1].type == LINE_STAT_NONE)
5321 line++;
5323 switch (line->type) {
5324 case LINE_STAT_STAGED:
5325 text = "Press %s to unstage %s for commit";
5326 break;
5328 case LINE_STAT_UNSTAGED:
5329 text = "Press %s to stage %s for commit";
5330 break;
5332 case LINE_STAT_UNTRACKED:
5333 text = "Press %s to stage %s for addition";
5334 break;
5336 case LINE_STAT_HEAD:
5337 case LINE_STAT_NONE:
5338 text = "Nothing to update";
5339 break;
5341 default:
5342 die("line type %d not handled in switch", line->type);
5343 }
5345 if (status && status->status == 'U') {
5346 text = "Press %s to resolve conflict in %s";
5347 key = get_key(REQ_STATUS_MERGE);
5349 } else {
5350 key = get_key(REQ_STATUS_UPDATE);
5351 }
5353 string_format(view->ref, text, key, file);
5354 }
5356 static bool
5357 status_grep(struct view *view, struct line *line)
5358 {
5359 struct status *status = line->data;
5360 enum { S_STATUS, S_NAME, S_END } state;
5361 char buf[2] = "?";
5362 regmatch_t pmatch;
5364 if (!status)
5365 return FALSE;
5367 for (state = S_STATUS; state < S_END; state++) {
5368 const char *text;
5370 switch (state) {
5371 case S_NAME: text = status->new.name; break;
5372 case S_STATUS:
5373 buf[0] = status->status;
5374 text = buf;
5375 break;
5377 default:
5378 return FALSE;
5379 }
5381 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5382 return TRUE;
5383 }
5385 return FALSE;
5386 }
5388 static struct view_ops status_ops = {
5389 "file",
5390 NULL,
5391 status_open,
5392 NULL,
5393 status_draw,
5394 status_request,
5395 status_grep,
5396 status_select,
5397 };
5400 static bool
5401 stage_diff_write(struct io *io, struct line *line, struct line *end)
5402 {
5403 while (line < end) {
5404 if (!io_write(io, line->data, strlen(line->data)) ||
5405 !io_write(io, "\n", 1))
5406 return FALSE;
5407 line++;
5408 if (line->type == LINE_DIFF_CHUNK ||
5409 line->type == LINE_DIFF_HEADER)
5410 break;
5411 }
5413 return TRUE;
5414 }
5416 static struct line *
5417 stage_diff_find(struct view *view, struct line *line, enum line_type type)
5418 {
5419 for (; view->line < line; line--)
5420 if (line->type == type)
5421 return line;
5423 return NULL;
5424 }
5426 static bool
5427 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
5428 {
5429 const char *apply_argv[SIZEOF_ARG] = {
5430 "git", "apply", "--whitespace=nowarn", NULL
5431 };
5432 struct line *diff_hdr;
5433 struct io io = {};
5434 int argc = 3;
5436 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
5437 if (!diff_hdr)
5438 return FALSE;
5440 if (!revert)
5441 apply_argv[argc++] = "--cached";
5442 if (revert || stage_line_type == LINE_STAT_STAGED)
5443 apply_argv[argc++] = "-R";
5444 apply_argv[argc++] = "-";
5445 apply_argv[argc++] = NULL;
5446 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
5447 return FALSE;
5449 if (!stage_diff_write(&io, diff_hdr, chunk) ||
5450 !stage_diff_write(&io, chunk, view->line + view->lines))
5451 chunk = NULL;
5453 done_io(&io);
5454 run_io_bg(update_index_argv);
5456 return chunk ? TRUE : FALSE;
5457 }
5459 static bool
5460 stage_update(struct view *view, struct line *line)
5461 {
5462 struct line *chunk = NULL;
5464 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
5465 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5467 if (chunk) {
5468 if (!stage_apply_chunk(view, chunk, FALSE)) {
5469 report("Failed to apply chunk");
5470 return FALSE;
5471 }
5473 } else if (!stage_status.status) {
5474 view = VIEW(REQ_VIEW_STATUS);
5476 for (line = view->line; line < view->line + view->lines; line++)
5477 if (line->type == stage_line_type)
5478 break;
5480 if (!status_update_files(view, line + 1)) {
5481 report("Failed to update files");
5482 return FALSE;
5483 }
5485 } else if (!status_update_file(&stage_status, stage_line_type)) {
5486 report("Failed to update file");
5487 return FALSE;
5488 }
5490 return TRUE;
5491 }
5493 static bool
5494 stage_revert(struct view *view, struct line *line)
5495 {
5496 struct line *chunk = NULL;
5498 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
5499 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
5501 if (chunk) {
5502 if (!prompt_yesno("Are you sure you want to revert changes?"))
5503 return FALSE;
5505 if (!stage_apply_chunk(view, chunk, TRUE)) {
5506 report("Failed to revert chunk");
5507 return FALSE;
5508 }
5509 return TRUE;
5511 } else {
5512 return status_revert(stage_status.status ? &stage_status : NULL,
5513 stage_line_type, FALSE);
5514 }
5515 }
5518 static void
5519 stage_next(struct view *view, struct line *line)
5520 {
5521 int i;
5523 if (!stage_chunks) {
5524 static size_t alloc = 0;
5525 int *tmp;
5527 for (line = view->line; line < view->line + view->lines; line++) {
5528 if (line->type != LINE_DIFF_CHUNK)
5529 continue;
5531 tmp = realloc_items(stage_chunk, &alloc,
5532 stage_chunks, sizeof(*tmp));
5533 if (!tmp) {
5534 report("Allocation failure");
5535 return;
5536 }
5538 stage_chunk = tmp;
5539 stage_chunk[stage_chunks++] = line - view->line;
5540 }
5541 }
5543 for (i = 0; i < stage_chunks; i++) {
5544 if (stage_chunk[i] > view->lineno) {
5545 do_scroll_view(view, stage_chunk[i] - view->lineno);
5546 report("Chunk %d of %d", i + 1, stage_chunks);
5547 return;
5548 }
5549 }
5551 report("No next chunk found");
5552 }
5554 static enum request
5555 stage_request(struct view *view, enum request request, struct line *line)
5556 {
5557 switch (request) {
5558 case REQ_STATUS_UPDATE:
5559 if (!stage_update(view, line))
5560 return REQ_NONE;
5561 break;
5563 case REQ_STATUS_REVERT:
5564 if (!stage_revert(view, line))
5565 return REQ_NONE;
5566 break;
5568 case REQ_STAGE_NEXT:
5569 if (stage_line_type == LINE_STAT_UNTRACKED) {
5570 report("File is untracked; press %s to add",
5571 get_key(REQ_STATUS_UPDATE));
5572 return REQ_NONE;
5573 }
5574 stage_next(view, line);
5575 return REQ_NONE;
5577 case REQ_EDIT:
5578 if (!stage_status.new.name[0])
5579 return request;
5580 if (stage_status.status == 'D') {
5581 report("File has been deleted.");
5582 return REQ_NONE;
5583 }
5585 open_editor(stage_status.status != '?', stage_status.new.name);
5586 break;
5588 case REQ_REFRESH:
5589 /* Reload everything ... */
5590 break;
5592 case REQ_VIEW_BLAME:
5593 if (stage_status.new.name[0]) {
5594 string_copy(opt_file, stage_status.new.name);
5595 opt_ref[0] = 0;
5596 }
5597 return request;
5599 case REQ_ENTER:
5600 return pager_request(view, request, line);
5602 default:
5603 return request;
5604 }
5606 VIEW(REQ_VIEW_STATUS)->p_restore = TRUE;
5607 open_view(view, REQ_VIEW_STATUS, OPEN_REFRESH);
5609 /* Check whether the staged entry still exists, and close the
5610 * stage view if it doesn't. */
5611 if (!status_exists(&stage_status, stage_line_type)) {
5612 status_restore(VIEW(REQ_VIEW_STATUS));
5613 return REQ_VIEW_CLOSE;
5614 }
5616 if (stage_line_type == LINE_STAT_UNTRACKED) {
5617 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5618 report("Cannot display a directory");
5619 return REQ_NONE;
5620 }
5622 if (!prepare_update_file(view, stage_status.new.name)) {
5623 report("Failed to open file: %s", strerror(errno));
5624 return REQ_NONE;
5625 }
5626 }
5627 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5629 return REQ_NONE;
5630 }
5632 static struct view_ops stage_ops = {
5633 "line",
5634 NULL,
5635 NULL,
5636 pager_read,
5637 pager_draw,
5638 stage_request,
5639 pager_grep,
5640 pager_select,
5641 };
5644 /*
5645 * Revision graph
5646 */
5648 struct commit {
5649 char id[SIZEOF_REV]; /* SHA1 ID. */
5650 char title[128]; /* First line of the commit message. */
5651 const char *author; /* Author of the commit. */
5652 time_t time; /* Date from the author ident. */
5653 struct ref **refs; /* Repository references. */
5654 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5655 size_t graph_size; /* The width of the graph array. */
5656 bool has_parents; /* Rewritten --parents seen. */
5657 };
5659 /* Size of rev graph with no "padding" columns */
5660 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5662 struct rev_graph {
5663 struct rev_graph *prev, *next, *parents;
5664 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5665 size_t size;
5666 struct commit *commit;
5667 size_t pos;
5668 unsigned int boundary:1;
5669 };
5671 /* Parents of the commit being visualized. */
5672 static struct rev_graph graph_parents[4];
5674 /* The current stack of revisions on the graph. */
5675 static struct rev_graph graph_stacks[4] = {
5676 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5677 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5678 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5679 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5680 };
5682 static inline bool
5683 graph_parent_is_merge(struct rev_graph *graph)
5684 {
5685 return graph->parents->size > 1;
5686 }
5688 static inline void
5689 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5690 {
5691 struct commit *commit = graph->commit;
5693 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5694 commit->graph[commit->graph_size++] = symbol;
5695 }
5697 static void
5698 clear_rev_graph(struct rev_graph *graph)
5699 {
5700 graph->boundary = 0;
5701 graph->size = graph->pos = 0;
5702 graph->commit = NULL;
5703 memset(graph->parents, 0, sizeof(*graph->parents));
5704 }
5706 static void
5707 done_rev_graph(struct rev_graph *graph)
5708 {
5709 if (graph_parent_is_merge(graph) &&
5710 graph->pos < graph->size - 1 &&
5711 graph->next->size == graph->size + graph->parents->size - 1) {
5712 size_t i = graph->pos + graph->parents->size - 1;
5714 graph->commit->graph_size = i * 2;
5715 while (i < graph->next->size - 1) {
5716 append_to_rev_graph(graph, ' ');
5717 append_to_rev_graph(graph, '\\');
5718 i++;
5719 }
5720 }
5722 clear_rev_graph(graph);
5723 }
5725 static void
5726 push_rev_graph(struct rev_graph *graph, const char *parent)
5727 {
5728 int i;
5730 /* "Collapse" duplicate parents lines.
5731 *
5732 * FIXME: This needs to also update update the drawn graph but
5733 * for now it just serves as a method for pruning graph lines. */
5734 for (i = 0; i < graph->size; i++)
5735 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5736 return;
5738 if (graph->size < SIZEOF_REVITEMS) {
5739 string_copy_rev(graph->rev[graph->size++], parent);
5740 }
5741 }
5743 static chtype
5744 get_rev_graph_symbol(struct rev_graph *graph)
5745 {
5746 chtype symbol;
5748 if (graph->boundary)
5749 symbol = REVGRAPH_BOUND;
5750 else if (graph->parents->size == 0)
5751 symbol = REVGRAPH_INIT;
5752 else if (graph_parent_is_merge(graph))
5753 symbol = REVGRAPH_MERGE;
5754 else if (graph->pos >= graph->size)
5755 symbol = REVGRAPH_BRANCH;
5756 else
5757 symbol = REVGRAPH_COMMIT;
5759 return symbol;
5760 }
5762 static void
5763 draw_rev_graph(struct rev_graph *graph)
5764 {
5765 struct rev_filler {
5766 chtype separator, line;
5767 };
5768 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5769 static struct rev_filler fillers[] = {
5770 { ' ', '|' },
5771 { '`', '.' },
5772 { '\'', ' ' },
5773 { '/', ' ' },
5774 };
5775 chtype symbol = get_rev_graph_symbol(graph);
5776 struct rev_filler *filler;
5777 size_t i;
5779 if (opt_line_graphics)
5780 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5782 filler = &fillers[DEFAULT];
5784 for (i = 0; i < graph->pos; i++) {
5785 append_to_rev_graph(graph, filler->line);
5786 if (graph_parent_is_merge(graph->prev) &&
5787 graph->prev->pos == i)
5788 filler = &fillers[RSHARP];
5790 append_to_rev_graph(graph, filler->separator);
5791 }
5793 /* Place the symbol for this revision. */
5794 append_to_rev_graph(graph, symbol);
5796 if (graph->prev->size > graph->size)
5797 filler = &fillers[RDIAG];
5798 else
5799 filler = &fillers[DEFAULT];
5801 i++;
5803 for (; i < graph->size; i++) {
5804 append_to_rev_graph(graph, filler->separator);
5805 append_to_rev_graph(graph, filler->line);
5806 if (graph_parent_is_merge(graph->prev) &&
5807 i < graph->prev->pos + graph->parents->size)
5808 filler = &fillers[RSHARP];
5809 if (graph->prev->size > graph->size)
5810 filler = &fillers[LDIAG];
5811 }
5813 if (graph->prev->size > graph->size) {
5814 append_to_rev_graph(graph, filler->separator);
5815 if (filler->line != ' ')
5816 append_to_rev_graph(graph, filler->line);
5817 }
5818 }
5820 /* Prepare the next rev graph */
5821 static void
5822 prepare_rev_graph(struct rev_graph *graph)
5823 {
5824 size_t i;
5826 /* First, traverse all lines of revisions up to the active one. */
5827 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5828 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5829 break;
5831 push_rev_graph(graph->next, graph->rev[graph->pos]);
5832 }
5834 /* Interleave the new revision parent(s). */
5835 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5836 push_rev_graph(graph->next, graph->parents->rev[i]);
5838 /* Lastly, put any remaining revisions. */
5839 for (i = graph->pos + 1; i < graph->size; i++)
5840 push_rev_graph(graph->next, graph->rev[i]);
5841 }
5843 static void
5844 update_rev_graph(struct view *view, struct rev_graph *graph)
5845 {
5846 /* If this is the finalizing update ... */
5847 if (graph->commit)
5848 prepare_rev_graph(graph);
5850 /* Graph visualization needs a one rev look-ahead,
5851 * so the first update doesn't visualize anything. */
5852 if (!graph->prev->commit)
5853 return;
5855 if (view->lines > 2)
5856 view->line[view->lines - 3].dirty = 1;
5857 if (view->lines > 1)
5858 view->line[view->lines - 2].dirty = 1;
5859 draw_rev_graph(graph->prev);
5860 done_rev_graph(graph->prev->prev);
5861 }
5864 /*
5865 * Main view backend
5866 */
5868 static const char *main_argv[SIZEOF_ARG] = {
5869 "git", "log", "--no-color", "--pretty=raw", "--parents",
5870 "--topo-order", "%(head)", NULL
5871 };
5873 static bool
5874 main_draw(struct view *view, struct line *line, unsigned int lineno)
5875 {
5876 struct commit *commit = line->data;
5878 if (!commit->author)
5879 return FALSE;
5881 if (opt_date && draw_date(view, &commit->time))
5882 return TRUE;
5884 if (opt_author && draw_author(view, commit->author))
5885 return TRUE;
5887 if (opt_rev_graph && commit->graph_size &&
5888 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5889 return TRUE;
5891 if (opt_show_refs && commit->refs) {
5892 size_t i = 0;
5894 do {
5895 enum line_type type;
5897 if (commit->refs[i]->head)
5898 type = LINE_MAIN_HEAD;
5899 else if (commit->refs[i]->ltag)
5900 type = LINE_MAIN_LOCAL_TAG;
5901 else if (commit->refs[i]->tag)
5902 type = LINE_MAIN_TAG;
5903 else if (commit->refs[i]->tracked)
5904 type = LINE_MAIN_TRACKED;
5905 else if (commit->refs[i]->remote)
5906 type = LINE_MAIN_REMOTE;
5907 else
5908 type = LINE_MAIN_REF;
5910 if (draw_text(view, type, "[", TRUE) ||
5911 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5912 draw_text(view, type, "]", TRUE))
5913 return TRUE;
5915 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5916 return TRUE;
5917 } while (commit->refs[i++]->next);
5918 }
5920 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5921 return TRUE;
5922 }
5924 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5925 static bool
5926 main_read(struct view *view, char *line)
5927 {
5928 static struct rev_graph *graph = graph_stacks;
5929 enum line_type type;
5930 struct commit *commit;
5932 if (!line) {
5933 int i;
5935 if (!view->lines && !view->parent)
5936 die("No revisions match the given arguments.");
5937 if (view->lines > 0) {
5938 commit = view->line[view->lines - 1].data;
5939 view->line[view->lines - 1].dirty = 1;
5940 if (!commit->author) {
5941 view->lines--;
5942 free(commit);
5943 graph->commit = NULL;
5944 }
5945 }
5946 update_rev_graph(view, graph);
5948 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5949 clear_rev_graph(&graph_stacks[i]);
5950 return TRUE;
5951 }
5953 type = get_line_type(line);
5954 if (type == LINE_COMMIT) {
5955 commit = calloc(1, sizeof(struct commit));
5956 if (!commit)
5957 return FALSE;
5959 line += STRING_SIZE("commit ");
5960 if (*line == '-') {
5961 graph->boundary = 1;
5962 line++;
5963 }
5965 string_copy_rev(commit->id, line);
5966 commit->refs = get_refs(commit->id);
5967 graph->commit = commit;
5968 add_line_data(view, commit, LINE_MAIN_COMMIT);
5970 while ((line = strchr(line, ' '))) {
5971 line++;
5972 push_rev_graph(graph->parents, line);
5973 commit->has_parents = TRUE;
5974 }
5975 return TRUE;
5976 }
5978 if (!view->lines)
5979 return TRUE;
5980 commit = view->line[view->lines - 1].data;
5982 switch (type) {
5983 case LINE_PARENT:
5984 if (commit->has_parents)
5985 break;
5986 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5987 break;
5989 case LINE_AUTHOR:
5990 parse_author_line(line + STRING_SIZE("author "),
5991 &commit->author, &commit->time);
5992 update_rev_graph(view, graph);
5993 graph = graph->next;
5994 break;
5996 default:
5997 /* Fill in the commit title if it has not already been set. */
5998 if (commit->title[0])
5999 break;
6001 /* Require titles to start with a non-space character at the
6002 * offset used by git log. */
6003 if (strncmp(line, " ", 4))
6004 break;
6005 line += 4;
6006 /* Well, if the title starts with a whitespace character,
6007 * try to be forgiving. Otherwise we end up with no title. */
6008 while (isspace(*line))
6009 line++;
6010 if (*line == '\0')
6011 break;
6012 /* FIXME: More graceful handling of titles; append "..." to
6013 * shortened titles, etc. */
6015 string_expand(commit->title, sizeof(commit->title), line, 1);
6016 view->line[view->lines - 1].dirty = 1;
6017 }
6019 return TRUE;
6020 }
6022 static enum request
6023 main_request(struct view *view, enum request request, struct line *line)
6024 {
6025 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
6027 switch (request) {
6028 case REQ_ENTER:
6029 open_view(view, REQ_VIEW_DIFF, flags);
6030 break;
6031 case REQ_REFRESH:
6032 load_refs();
6033 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
6034 break;
6035 default:
6036 return request;
6037 }
6039 return REQ_NONE;
6040 }
6042 static bool
6043 grep_refs(struct ref **refs, regex_t *regex)
6044 {
6045 regmatch_t pmatch;
6046 size_t i = 0;
6048 if (!refs)
6049 return FALSE;
6050 do {
6051 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
6052 return TRUE;
6053 } while (refs[i++]->next);
6055 return FALSE;
6056 }
6058 static bool
6059 main_grep(struct view *view, struct line *line)
6060 {
6061 struct commit *commit = line->data;
6062 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
6063 regmatch_t pmatch;
6065 for (state = S_TITLE; state < S_END; state++) {
6066 const char *text;
6068 switch (state) {
6069 case S_TITLE: text = commit->title; break;
6070 case S_AUTHOR:
6071 if (!opt_author)
6072 continue;
6073 text = commit->author;
6074 break;
6075 case S_DATE:
6076 if (!opt_date)
6077 continue;
6078 text = mkdate(&commit->time);
6079 if (!text)
6080 continue;
6081 break;
6082 case S_REFS:
6083 if (!opt_show_refs)
6084 continue;
6085 if (grep_refs(commit->refs, view->regex) == TRUE)
6086 return TRUE;
6087 continue;
6088 default:
6089 return FALSE;
6090 }
6092 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
6093 return TRUE;
6094 }
6096 return FALSE;
6097 }
6099 static void
6100 main_select(struct view *view, struct line *line)
6101 {
6102 struct commit *commit = line->data;
6104 string_copy_rev(view->ref, commit->id);
6105 string_copy_rev(ref_commit, view->ref);
6106 }
6108 static struct view_ops main_ops = {
6109 "commit",
6110 main_argv,
6111 NULL,
6112 main_read,
6113 main_draw,
6114 main_request,
6115 main_grep,
6116 main_select,
6117 };
6120 /*
6121 * Unicode / UTF-8 handling
6122 *
6123 * NOTE: Much of the following code for dealing with Unicode is derived from
6124 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
6125 * src/intl/charset.c from the UTF-8 branch commit elinks-0.11.0-g31f2c28.
6126 */
6128 static inline int
6129 unicode_width(unsigned long c)
6130 {
6131 if (c >= 0x1100 &&
6132 (c <= 0x115f /* Hangul Jamo */
6133 || c == 0x2329
6134 || c == 0x232a
6135 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
6136 /* CJK ... Yi */
6137 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
6138 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
6139 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
6140 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
6141 || (c >= 0xffe0 && c <= 0xffe6)
6142 || (c >= 0x20000 && c <= 0x2fffd)
6143 || (c >= 0x30000 && c <= 0x3fffd)))
6144 return 2;
6146 if (c == '\t')
6147 return opt_tab_size;
6149 return 1;
6150 }
6152 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
6153 * Illegal bytes are set one. */
6154 static const unsigned char utf8_bytes[256] = {
6155 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,
6156 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,
6157 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,
6158 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,
6159 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,
6160 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,
6161 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,
6162 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,
6163 };
6165 /* Decode UTF-8 multi-byte representation into a Unicode character. */
6166 static inline unsigned long
6167 utf8_to_unicode(const char *string, size_t length)
6168 {
6169 unsigned long unicode;
6171 switch (length) {
6172 case 1:
6173 unicode = string[0];
6174 break;
6175 case 2:
6176 unicode = (string[0] & 0x1f) << 6;
6177 unicode += (string[1] & 0x3f);
6178 break;
6179 case 3:
6180 unicode = (string[0] & 0x0f) << 12;
6181 unicode += ((string[1] & 0x3f) << 6);
6182 unicode += (string[2] & 0x3f);
6183 break;
6184 case 4:
6185 unicode = (string[0] & 0x0f) << 18;
6186 unicode += ((string[1] & 0x3f) << 12);
6187 unicode += ((string[2] & 0x3f) << 6);
6188 unicode += (string[3] & 0x3f);
6189 break;
6190 case 5:
6191 unicode = (string[0] & 0x0f) << 24;
6192 unicode += ((string[1] & 0x3f) << 18);
6193 unicode += ((string[2] & 0x3f) << 12);
6194 unicode += ((string[3] & 0x3f) << 6);
6195 unicode += (string[4] & 0x3f);
6196 break;
6197 case 6:
6198 unicode = (string[0] & 0x01) << 30;
6199 unicode += ((string[1] & 0x3f) << 24);
6200 unicode += ((string[2] & 0x3f) << 18);
6201 unicode += ((string[3] & 0x3f) << 12);
6202 unicode += ((string[4] & 0x3f) << 6);
6203 unicode += (string[5] & 0x3f);
6204 break;
6205 default:
6206 die("Invalid Unicode length");
6207 }
6209 /* Invalid characters could return the special 0xfffd value but NUL
6210 * should be just as good. */
6211 return unicode > 0xffff ? 0 : unicode;
6212 }
6214 /* Calculates how much of string can be shown within the given maximum width
6215 * and sets trimmed parameter to non-zero value if all of string could not be
6216 * shown. If the reserve flag is TRUE, it will reserve at least one
6217 * trailing character, which can be useful when drawing a delimiter.
6218 *
6219 * Returns the number of bytes to output from string to satisfy max_width. */
6220 static size_t
6221 utf8_length(const char **start, size_t skip, int *width, size_t max_width, int *trimmed, bool reserve)
6222 {
6223 const char *string = *start;
6224 const char *end = strchr(string, '\0');
6225 unsigned char last_bytes = 0;
6226 size_t last_ucwidth = 0;
6228 *width = 0;
6229 *trimmed = 0;
6231 while (string < end) {
6232 int c = *(unsigned char *) string;
6233 unsigned char bytes = utf8_bytes[c];
6234 size_t ucwidth;
6235 unsigned long unicode;
6237 if (string + bytes > end)
6238 break;
6240 /* Change representation to figure out whether
6241 * it is a single- or double-width character. */
6243 unicode = utf8_to_unicode(string, bytes);
6244 /* FIXME: Graceful handling of invalid Unicode character. */
6245 if (!unicode)
6246 break;
6248 ucwidth = unicode_width(unicode);
6249 if (skip > 0) {
6250 skip -= ucwidth <= skip ? ucwidth : skip;
6251 *start += bytes;
6252 }
6253 *width += ucwidth;
6254 if (*width > max_width) {
6255 *trimmed = 1;
6256 *width -= ucwidth;
6257 if (reserve && *width == max_width) {
6258 string -= last_bytes;
6259 *width -= last_ucwidth;
6260 }
6261 break;
6262 }
6264 string += bytes;
6265 last_bytes = ucwidth ? bytes : 0;
6266 last_ucwidth = ucwidth;
6267 }
6269 return string - *start;
6270 }
6273 /*
6274 * Status management
6275 */
6277 /* Whether or not the curses interface has been initialized. */
6278 static bool cursed = FALSE;
6280 /* Terminal hacks and workarounds. */
6281 static bool use_scroll_redrawwin;
6282 static bool use_scroll_status_wclear;
6284 /* The status window is used for polling keystrokes. */
6285 static WINDOW *status_win;
6287 /* Reading from the prompt? */
6288 static bool input_mode = FALSE;
6290 static bool status_empty = FALSE;
6292 /* Update status and title window. */
6293 static void
6294 report(const char *msg, ...)
6295 {
6296 struct view *view = display[current_view];
6298 if (input_mode)
6299 return;
6301 if (!view) {
6302 char buf[SIZEOF_STR];
6303 va_list args;
6305 va_start(args, msg);
6306 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
6307 buf[sizeof(buf) - 1] = 0;
6308 buf[sizeof(buf) - 2] = '.';
6309 buf[sizeof(buf) - 3] = '.';
6310 buf[sizeof(buf) - 4] = '.';
6311 }
6312 va_end(args);
6313 die("%s", buf);
6314 }
6316 if (!status_empty || *msg) {
6317 va_list args;
6319 va_start(args, msg);
6321 wmove(status_win, 0, 0);
6322 if (view->has_scrolled && use_scroll_status_wclear)
6323 wclear(status_win);
6324 if (*msg) {
6325 vwprintw(status_win, msg, args);
6326 status_empty = FALSE;
6327 } else {
6328 status_empty = TRUE;
6329 }
6330 wclrtoeol(status_win);
6331 wnoutrefresh(status_win);
6333 va_end(args);
6334 }
6336 update_view_title(view);
6337 }
6339 /* Controls when nodelay should be in effect when polling user input. */
6340 static void
6341 set_nonblocking_input(bool loading)
6342 {
6343 static unsigned int loading_views;
6345 if ((loading == FALSE && loading_views-- == 1) ||
6346 (loading == TRUE && loading_views++ == 0))
6347 nodelay(status_win, loading);
6348 }
6350 static void
6351 init_display(void)
6352 {
6353 const char *term;
6354 int x, y;
6356 /* Initialize the curses library */
6357 if (isatty(STDIN_FILENO)) {
6358 cursed = !!initscr();
6359 opt_tty = stdin;
6360 } else {
6361 /* Leave stdin and stdout alone when acting as a pager. */
6362 opt_tty = fopen("/dev/tty", "r+");
6363 if (!opt_tty)
6364 die("Failed to open /dev/tty");
6365 cursed = !!newterm(NULL, opt_tty, opt_tty);
6366 }
6368 if (!cursed)
6369 die("Failed to initialize curses");
6371 nonl(); /* Disable conversion and detect newlines from input. */
6372 cbreak(); /* Take input chars one at a time, no wait for \n */
6373 noecho(); /* Don't echo input */
6374 leaveok(stdscr, FALSE);
6376 if (has_colors())
6377 init_colors();
6379 getmaxyx(stdscr, y, x);
6380 status_win = newwin(1, 0, y - 1, 0);
6381 if (!status_win)
6382 die("Failed to create status window");
6384 /* Enable keyboard mapping */
6385 keypad(status_win, TRUE);
6386 wbkgdset(status_win, get_line_attr(LINE_STATUS));
6388 TABSIZE = opt_tab_size;
6389 if (opt_line_graphics) {
6390 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
6391 }
6393 term = getenv("XTERM_VERSION") ? NULL : getenv("COLORTERM");
6394 if (term && !strcmp(term, "gnome-terminal")) {
6395 /* In the gnome-terminal-emulator, the message from
6396 * scrolling up one line when impossible followed by
6397 * scrolling down one line causes corruption of the
6398 * status line. This is fixed by calling wclear. */
6399 use_scroll_status_wclear = TRUE;
6400 use_scroll_redrawwin = FALSE;
6402 } else if (term && !strcmp(term, "xrvt-xpm")) {
6403 /* No problems with full optimizations in xrvt-(unicode)
6404 * and aterm. */
6405 use_scroll_status_wclear = use_scroll_redrawwin = FALSE;
6407 } else {
6408 /* When scrolling in (u)xterm the last line in the
6409 * scrolling direction will update slowly. */
6410 use_scroll_redrawwin = TRUE;
6411 use_scroll_status_wclear = FALSE;
6412 }
6413 }
6415 static int
6416 get_input(int prompt_position)
6417 {
6418 struct view *view;
6419 int i, key, cursor_y, cursor_x;
6421 if (prompt_position)
6422 input_mode = TRUE;
6424 while (TRUE) {
6425 foreach_view (view, i) {
6426 update_view(view);
6427 if (view_is_displayed(view) && view->has_scrolled &&
6428 use_scroll_redrawwin)
6429 redrawwin(view->win);
6430 view->has_scrolled = FALSE;
6431 }
6433 /* Update the cursor position. */
6434 if (prompt_position) {
6435 getbegyx(status_win, cursor_y, cursor_x);
6436 cursor_x = prompt_position;
6437 } else {
6438 view = display[current_view];
6439 getbegyx(view->win, cursor_y, cursor_x);
6440 cursor_x = view->width - 1;
6441 cursor_y += view->lineno - view->offset;
6442 }
6443 setsyx(cursor_y, cursor_x);
6445 /* Refresh, accept single keystroke of input */
6446 doupdate();
6447 key = wgetch(status_win);
6449 /* wgetch() with nodelay() enabled returns ERR when
6450 * there's no input. */
6451 if (key == ERR) {
6453 } else if (key == KEY_RESIZE) {
6454 int height, width;
6456 getmaxyx(stdscr, height, width);
6458 wresize(status_win, 1, width);
6459 mvwin(status_win, height - 1, 0);
6460 wnoutrefresh(status_win);
6461 resize_display();
6462 redraw_display(TRUE);
6464 } else {
6465 input_mode = FALSE;
6466 return key;
6467 }
6468 }
6469 }
6471 static char *
6472 prompt_input(const char *prompt, input_handler handler, void *data)
6473 {
6474 enum input_status status = INPUT_OK;
6475 static char buf[SIZEOF_STR];
6476 size_t pos = 0;
6478 buf[pos] = 0;
6480 while (status == INPUT_OK || status == INPUT_SKIP) {
6481 int key;
6483 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
6484 wclrtoeol(status_win);
6486 key = get_input(pos + 1);
6487 switch (key) {
6488 case KEY_RETURN:
6489 case KEY_ENTER:
6490 case '\n':
6491 status = pos ? INPUT_STOP : INPUT_CANCEL;
6492 break;
6494 case KEY_BACKSPACE:
6495 if (pos > 0)
6496 buf[--pos] = 0;
6497 else
6498 status = INPUT_CANCEL;
6499 break;
6501 case KEY_ESC:
6502 status = INPUT_CANCEL;
6503 break;
6505 default:
6506 if (pos >= sizeof(buf)) {
6507 report("Input string too long");
6508 return NULL;
6509 }
6511 status = handler(data, buf, key);
6512 if (status == INPUT_OK)
6513 buf[pos++] = (char) key;
6514 }
6515 }
6517 /* Clear the status window */
6518 status_empty = FALSE;
6519 report("");
6521 if (status == INPUT_CANCEL)
6522 return NULL;
6524 buf[pos++] = 0;
6526 return buf;
6527 }
6529 static enum input_status
6530 prompt_yesno_handler(void *data, char *buf, int c)
6531 {
6532 if (c == 'y' || c == 'Y')
6533 return INPUT_STOP;
6534 if (c == 'n' || c == 'N')
6535 return INPUT_CANCEL;
6536 return INPUT_SKIP;
6537 }
6539 static bool
6540 prompt_yesno(const char *prompt)
6541 {
6542 char prompt2[SIZEOF_STR];
6544 if (!string_format(prompt2, "%s [Yy/Nn]", prompt))
6545 return FALSE;
6547 return !!prompt_input(prompt2, prompt_yesno_handler, NULL);
6548 }
6550 static enum input_status
6551 read_prompt_handler(void *data, char *buf, int c)
6552 {
6553 return isprint(c) ? INPUT_OK : INPUT_SKIP;
6554 }
6556 static char *
6557 read_prompt(const char *prompt)
6558 {
6559 return prompt_input(prompt, read_prompt_handler, NULL);
6560 }
6562 /*
6563 * Repository properties
6564 */
6566 static struct ref *refs = NULL;
6567 static size_t refs_alloc = 0;
6568 static size_t refs_size = 0;
6570 /* Id <-> ref store */
6571 static struct ref ***id_refs = NULL;
6572 static size_t id_refs_alloc = 0;
6573 static size_t id_refs_size = 0;
6575 static int
6576 compare_refs(const void *ref1_, const void *ref2_)
6577 {
6578 const struct ref *ref1 = *(const struct ref **)ref1_;
6579 const struct ref *ref2 = *(const struct ref **)ref2_;
6581 if (ref1->tag != ref2->tag)
6582 return ref2->tag - ref1->tag;
6583 if (ref1->ltag != ref2->ltag)
6584 return ref2->ltag - ref2->ltag;
6585 if (ref1->head != ref2->head)
6586 return ref2->head - ref1->head;
6587 if (ref1->tracked != ref2->tracked)
6588 return ref2->tracked - ref1->tracked;
6589 if (ref1->remote != ref2->remote)
6590 return ref2->remote - ref1->remote;
6591 return strcmp(ref1->name, ref2->name);
6592 }
6594 static struct ref **
6595 get_refs(const char *id)
6596 {
6597 struct ref ***tmp_id_refs;
6598 struct ref **ref_list = NULL;
6599 size_t ref_list_alloc = 0;
6600 size_t ref_list_size = 0;
6601 size_t i;
6603 for (i = 0; i < id_refs_size; i++)
6604 if (!strcmp(id, id_refs[i][0]->id))
6605 return id_refs[i];
6607 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6608 sizeof(*id_refs));
6609 if (!tmp_id_refs)
6610 return NULL;
6612 id_refs = tmp_id_refs;
6614 for (i = 0; i < refs_size; i++) {
6615 struct ref **tmp;
6617 if (strcmp(id, refs[i].id))
6618 continue;
6620 tmp = realloc_items(ref_list, &ref_list_alloc,
6621 ref_list_size + 1, sizeof(*ref_list));
6622 if (!tmp) {
6623 if (ref_list)
6624 free(ref_list);
6625 return NULL;
6626 }
6628 ref_list = tmp;
6629 ref_list[ref_list_size] = &refs[i];
6630 /* XXX: The properties of the commit chains ensures that we can
6631 * safely modify the shared ref. The repo references will
6632 * always be similar for the same id. */
6633 ref_list[ref_list_size]->next = 1;
6635 ref_list_size++;
6636 }
6638 if (ref_list) {
6639 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6640 ref_list[ref_list_size - 1]->next = 0;
6641 id_refs[id_refs_size++] = ref_list;
6642 }
6644 return ref_list;
6645 }
6647 static int
6648 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6649 {
6650 struct ref *ref;
6651 bool tag = FALSE;
6652 bool ltag = FALSE;
6653 bool remote = FALSE;
6654 bool tracked = FALSE;
6655 bool check_replace = FALSE;
6656 bool head = FALSE;
6658 if (!prefixcmp(name, "refs/tags/")) {
6659 if (!suffixcmp(name, namelen, "^{}")) {
6660 namelen -= 3;
6661 name[namelen] = 0;
6662 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6663 check_replace = TRUE;
6664 } else {
6665 ltag = TRUE;
6666 }
6668 tag = TRUE;
6669 namelen -= STRING_SIZE("refs/tags/");
6670 name += STRING_SIZE("refs/tags/");
6672 } else if (!prefixcmp(name, "refs/remotes/")) {
6673 remote = TRUE;
6674 namelen -= STRING_SIZE("refs/remotes/");
6675 name += STRING_SIZE("refs/remotes/");
6676 tracked = !strcmp(opt_remote, name);
6678 } else if (!prefixcmp(name, "refs/heads/")) {
6679 namelen -= STRING_SIZE("refs/heads/");
6680 name += STRING_SIZE("refs/heads/");
6681 head = !strncmp(opt_head, name, namelen);
6683 } else if (!strcmp(name, "HEAD")) {
6684 string_ncopy(opt_head_rev, id, idlen);
6685 return OK;
6686 }
6688 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6689 /* it's an annotated tag, replace the previous SHA1 with the
6690 * resolved commit id; relies on the fact git-ls-remote lists
6691 * the commit id of an annotated tag right before the commit id
6692 * it points to. */
6693 refs[refs_size - 1].ltag = ltag;
6694 string_copy_rev(refs[refs_size - 1].id, id);
6696 return OK;
6697 }
6698 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6699 if (!refs)
6700 return ERR;
6702 ref = &refs[refs_size++];
6703 ref->name = malloc(namelen + 1);
6704 if (!ref->name)
6705 return ERR;
6707 strncpy(ref->name, name, namelen);
6708 ref->name[namelen] = 0;
6709 ref->head = head;
6710 ref->tag = tag;
6711 ref->ltag = ltag;
6712 ref->remote = remote;
6713 ref->tracked = tracked;
6714 string_copy_rev(ref->id, id);
6716 return OK;
6717 }
6719 static int
6720 load_refs(void)
6721 {
6722 static const char *ls_remote_argv[SIZEOF_ARG] = {
6723 "git", "ls-remote", opt_git_dir, NULL
6724 };
6725 static bool init = FALSE;
6727 if (!init) {
6728 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6729 init = TRUE;
6730 }
6732 if (!*opt_git_dir)
6733 return OK;
6735 while (refs_size > 0)
6736 free(refs[--refs_size].name);
6737 while (id_refs_size > 0)
6738 free(id_refs[--id_refs_size]);
6740 return run_io_load(ls_remote_argv, "\t", read_ref);
6741 }
6743 static void
6744 set_remote_branch(const char *name, const char *value, size_t valuelen)
6745 {
6746 if (!strcmp(name, ".remote")) {
6747 string_ncopy(opt_remote, value, valuelen);
6749 } else if (*opt_remote && !strcmp(name, ".merge")) {
6750 size_t from = strlen(opt_remote);
6752 if (!prefixcmp(value, "refs/heads/"))
6753 value += STRING_SIZE("refs/heads/");
6755 if (!string_format_from(opt_remote, &from, "/%s", value))
6756 opt_remote[0] = 0;
6757 }
6758 }
6760 static void
6761 set_repo_config_option(char *name, char *value, int (*cmd)(int, const char **))
6762 {
6763 const char *argv[SIZEOF_ARG] = { name, "=" };
6764 int argc = 1 + (cmd == option_set_command);
6765 int error = ERR;
6767 if (!argv_from_string(argv, &argc, value))
6768 config_msg = "Too many option arguments";
6769 else
6770 error = cmd(argc, argv);
6772 if (error == ERR)
6773 warn("Option 'tig.%s': %s", name, config_msg);
6774 }
6776 static bool
6777 set_environment_variable(const char *name, const char *value)
6778 {
6779 size_t len = strlen(name) + 1 + strlen(value) + 1;
6780 char *env = malloc(len);
6782 if (env &&
6783 string_nformat(env, len, NULL, "%s=%s", name, value) &&
6784 putenv(env) == 0)
6785 return TRUE;
6786 free(env);
6787 return FALSE;
6788 }
6790 static void
6791 set_work_tree(const char *value)
6792 {
6793 char cwd[SIZEOF_STR];
6795 if (!getcwd(cwd, sizeof(cwd)))
6796 die("Failed to get cwd path: %s", strerror(errno));
6797 if (chdir(opt_git_dir) < 0)
6798 die("Failed to chdir(%s): %s", strerror(errno));
6799 if (!getcwd(opt_git_dir, sizeof(opt_git_dir)))
6800 die("Failed to get git path: %s", strerror(errno));
6801 if (chdir(cwd) < 0)
6802 die("Failed to chdir(%s): %s", cwd, strerror(errno));
6803 if (chdir(value) < 0)
6804 die("Failed to chdir(%s): %s", value, strerror(errno));
6805 if (!getcwd(cwd, sizeof(cwd)))
6806 die("Failed to get cwd path: %s", strerror(errno));
6807 if (!set_environment_variable("GIT_WORK_TREE", cwd))
6808 die("Failed to set GIT_WORK_TREE to '%s'", cwd);
6809 if (!set_environment_variable("GIT_DIR", opt_git_dir))
6810 die("Failed to set GIT_DIR to '%s'", opt_git_dir);
6811 opt_is_inside_work_tree = TRUE;
6812 }
6814 static int
6815 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6816 {
6817 if (!strcmp(name, "i18n.commitencoding"))
6818 string_ncopy(opt_encoding, value, valuelen);
6820 else if (!strcmp(name, "core.editor"))
6821 string_ncopy(opt_editor, value, valuelen);
6823 else if (!strcmp(name, "core.worktree"))
6824 set_work_tree(value);
6826 else if (!prefixcmp(name, "tig.color."))
6827 set_repo_config_option(name + 10, value, option_color_command);
6829 else if (!prefixcmp(name, "tig.bind."))
6830 set_repo_config_option(name + 9, value, option_bind_command);
6832 else if (!prefixcmp(name, "tig."))
6833 set_repo_config_option(name + 4, value, option_set_command);
6835 else if (*opt_head && !prefixcmp(name, "branch.") &&
6836 !strncmp(name + 7, opt_head, strlen(opt_head)))
6837 set_remote_branch(name + 7 + strlen(opt_head), value, valuelen);
6839 return OK;
6840 }
6842 static int
6843 load_git_config(void)
6844 {
6845 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6847 return run_io_load(config_list_argv, "=", read_repo_config_option);
6848 }
6850 static int
6851 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6852 {
6853 if (!opt_git_dir[0]) {
6854 string_ncopy(opt_git_dir, name, namelen);
6856 } else if (opt_is_inside_work_tree == -1) {
6857 /* This can be 3 different values depending on the
6858 * version of git being used. If git-rev-parse does not
6859 * understand --is-inside-work-tree it will simply echo
6860 * the option else either "true" or "false" is printed.
6861 * Default to true for the unknown case. */
6862 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6864 } else if (*name == '.') {
6865 string_ncopy(opt_cdup, name, namelen);
6867 } else {
6868 string_ncopy(opt_prefix, name, namelen);
6869 }
6871 return OK;
6872 }
6874 static int
6875 load_repo_info(void)
6876 {
6877 const char *head_argv[] = {
6878 "git", "symbolic-ref", "HEAD", NULL
6879 };
6880 const char *rev_parse_argv[] = {
6881 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6882 "--show-cdup", "--show-prefix", NULL
6883 };
6885 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6886 chomp_string(opt_head);
6887 if (!prefixcmp(opt_head, "refs/heads/")) {
6888 char *offset = opt_head + STRING_SIZE("refs/heads/");
6890 memmove(opt_head, offset, strlen(offset) + 1);
6891 }
6892 }
6894 return run_io_load(rev_parse_argv, "=", read_repo_info);
6895 }
6898 /*
6899 * Main
6900 */
6902 static const char usage[] =
6903 "tig " TIG_VERSION " (" __DATE__ ")\n"
6904 "\n"
6905 "Usage: tig [options] [revs] [--] [paths]\n"
6906 " or: tig show [options] [revs] [--] [paths]\n"
6907 " or: tig blame [rev] path\n"
6908 " or: tig status\n"
6909 " or: tig < [git command output]\n"
6910 "\n"
6911 "Options:\n"
6912 " -v, --version Show version and exit\n"
6913 " -h, --help Show help message and exit";
6915 static void __NORETURN
6916 quit(int sig)
6917 {
6918 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6919 if (cursed)
6920 endwin();
6921 exit(0);
6922 }
6924 static void __NORETURN
6925 die(const char *err, ...)
6926 {
6927 va_list args;
6929 endwin();
6931 va_start(args, err);
6932 fputs("tig: ", stderr);
6933 vfprintf(stderr, err, args);
6934 fputs("\n", stderr);
6935 va_end(args);
6937 exit(1);
6938 }
6940 static void
6941 warn(const char *msg, ...)
6942 {
6943 va_list args;
6945 va_start(args, msg);
6946 fputs("tig warning: ", stderr);
6947 vfprintf(stderr, msg, args);
6948 fputs("\n", stderr);
6949 va_end(args);
6950 }
6952 static enum request
6953 parse_options(int argc, const char *argv[])
6954 {
6955 enum request request = REQ_VIEW_MAIN;
6956 const char *subcommand;
6957 bool seen_dashdash = FALSE;
6958 /* XXX: This is vulnerable to the user overriding options
6959 * required for the main view parser. */
6960 const char *custom_argv[SIZEOF_ARG] = {
6961 "git", "log", "--no-color", "--pretty=raw", "--parents",
6962 "--topo-order", NULL
6963 };
6964 int i, j = 6;
6966 if (!isatty(STDIN_FILENO)) {
6967 io_open(&VIEW(REQ_VIEW_PAGER)->io, "");
6968 return REQ_VIEW_PAGER;
6969 }
6971 if (argc <= 1)
6972 return REQ_NONE;
6974 subcommand = argv[1];
6975 if (!strcmp(subcommand, "status")) {
6976 if (argc > 2)
6977 warn("ignoring arguments after `%s'", subcommand);
6978 return REQ_VIEW_STATUS;
6980 } else if (!strcmp(subcommand, "blame")) {
6981 if (argc <= 2 || argc > 4)
6982 die("invalid number of options to blame\n\n%s", usage);
6984 i = 2;
6985 if (argc == 4) {
6986 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
6987 i++;
6988 }
6990 string_ncopy(opt_file, argv[i], strlen(argv[i]));
6991 return REQ_VIEW_BLAME;
6993 } else if (!strcmp(subcommand, "show")) {
6994 request = REQ_VIEW_DIFF;
6996 } else {
6997 subcommand = NULL;
6998 }
7000 if (subcommand) {
7001 custom_argv[1] = subcommand;
7002 j = 2;
7003 }
7005 for (i = 1 + !!subcommand; i < argc; i++) {
7006 const char *opt = argv[i];
7008 if (seen_dashdash || !strcmp(opt, "--")) {
7009 seen_dashdash = TRUE;
7011 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
7012 printf("tig version %s\n", TIG_VERSION);
7013 quit(0);
7015 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
7016 printf("%s\n", usage);
7017 quit(0);
7018 }
7020 custom_argv[j++] = opt;
7021 if (j >= ARRAY_SIZE(custom_argv))
7022 die("command too long");
7023 }
7025 if (!prepare_update(VIEW(request), custom_argv, NULL, FORMAT_NONE))
7026 die("Failed to format arguments");
7028 return request;
7029 }
7031 int
7032 main(int argc, const char *argv[])
7033 {
7034 enum request request = parse_options(argc, argv);
7035 struct view *view;
7036 size_t i;
7038 signal(SIGINT, quit);
7039 signal(SIGPIPE, SIG_IGN);
7041 if (setlocale(LC_ALL, "")) {
7042 char *codeset = nl_langinfo(CODESET);
7044 string_ncopy(opt_codeset, codeset, strlen(codeset));
7045 }
7047 if (load_repo_info() == ERR)
7048 die("Failed to load repo info.");
7050 if (load_options() == ERR)
7051 die("Failed to load user config.");
7053 if (load_git_config() == ERR)
7054 die("Failed to load repo config.");
7056 /* Require a git repository unless when running in pager mode. */
7057 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
7058 die("Not a git repository");
7060 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
7061 opt_utf8 = FALSE;
7063 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
7064 opt_iconv = iconv_open(opt_codeset, opt_encoding);
7065 if (opt_iconv == ICONV_NONE)
7066 die("Failed to initialize character set conversion");
7067 }
7069 if (load_refs() == ERR)
7070 die("Failed to load refs.");
7072 foreach_view (view, i)
7073 argv_from_env(view->ops->argv, view->cmd_env);
7075 init_display();
7077 if (request != REQ_NONE)
7078 open_view(NULL, request, OPEN_PREPARED);
7079 request = request == REQ_NONE ? REQ_VIEW_MAIN : REQ_NONE;
7081 while (view_driver(display[current_view], request)) {
7082 int key = get_input(0);
7084 view = display[current_view];
7085 request = get_keybinding(view->keymap, key);
7087 /* Some low-level request handling. This keeps access to
7088 * status_win restricted. */
7089 switch (request) {
7090 case REQ_PROMPT:
7091 {
7092 char *cmd = read_prompt(":");
7094 if (cmd && isdigit(*cmd)) {
7095 int lineno = view->lineno + 1;
7097 if (parse_int(&lineno, cmd, 1, view->lines + 1) == OK) {
7098 select_view_line(view, lineno - 1);
7099 report("");
7100 } else {
7101 report("Unable to parse '%s' as a line number", cmd);
7102 }
7104 } else if (cmd) {
7105 struct view *next = VIEW(REQ_VIEW_PAGER);
7106 const char *argv[SIZEOF_ARG] = { "git" };
7107 int argc = 1;
7109 /* When running random commands, initially show the
7110 * command in the title. However, it maybe later be
7111 * overwritten if a commit line is selected. */
7112 string_ncopy(next->ref, cmd, strlen(cmd));
7114 if (!argv_from_string(argv, &argc, cmd)) {
7115 report("Too many arguments");
7116 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
7117 report("Failed to format command");
7118 } else {
7119 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
7120 }
7121 }
7123 request = REQ_NONE;
7124 break;
7125 }
7126 case REQ_SEARCH:
7127 case REQ_SEARCH_BACK:
7128 {
7129 const char *prompt = request == REQ_SEARCH ? "/" : "?";
7130 char *search = read_prompt(prompt);
7132 if (search)
7133 string_ncopy(opt_search, search, strlen(search));
7134 else if (*opt_search)
7135 request = request == REQ_SEARCH ?
7136 REQ_FIND_NEXT :
7137 REQ_FIND_PREV;
7138 else
7139 request = REQ_NONE;
7140 break;
7141 }
7142 default:
7143 break;
7144 }
7145 }
7147 quit(0);
7149 return 0;
7150 }