4 * Copyright (C) Linus Torvalds, 2005
11 #include "parse-options.h"
17 static int filter
= ~0;
19 static const char *def
;
23 static int show_type
= NORMAL
;
25 #define SHOW_SYMBOLIC_ASIS 1
26 #define SHOW_SYMBOLIC_FULL 2
29 static int abbrev_ref
;
30 static int abbrev_ref_strict
;
34 * Some arguments are relevant "revision" arguments,
35 * others are about output format or other details.
36 * This sorts it all out.
38 static int is_rev_argument(const char *arg
)
40 static const char *rev_args
[] = {
71 const char **p
= rev_args
;
73 /* accept -<digit>, like traditional "head" */
74 if ((*arg
== '-') && isdigit(arg
[1]))
78 const char *str
= *p
++;
83 if (!strcmp(arg
, str
) ||
84 (str
[len
-1] == '=' && !strncmp(arg
, str
, len
)))
89 /* Output argument as a string, either SQ or normal */
90 static void show(const char *arg
)
96 while ((ch
= *arg
++)) {
98 fputs("'\\'", stdout
);
108 /* Like show(), but with a negation prefix according to type */
109 static void show_with_type(int type
, const char *arg
)
111 if (type
!= show_type
)
116 /* Output a revision, only if filter allows it */
117 static void show_rev(int type
, const unsigned char *sha1
, const char *name
)
119 if (!(filter
& DO_REVS
))
123 if ((symbolic
|| abbrev_ref
) && name
) {
124 if (symbolic
== SHOW_SYMBOLIC_FULL
|| abbrev_ref
) {
125 unsigned char discard
[20];
128 switch (dwim_ref(name
, strlen(name
), discard
, &full
)) {
131 * Not found -- not a ref. We could
132 * emit "name" here, but symbolic-full
133 * users are interested in finding the
134 * refs spelled in full, and they would
135 * need to filter non-refs if we did so.
140 full
= shorten_unambiguous_ref(full
,
142 show_with_type(type
, full
);
144 default: /* ambiguous */
145 error("refname '%s' is ambiguous", name
);
149 show_with_type(type
, name
);
153 show_with_type(type
, find_unique_abbrev(sha1
, abbrev
));
155 show_with_type(type
, sha1_to_hex(sha1
));
158 /* Output a flag, only if filter allows it. */
159 static int show_flag(const char *arg
)
161 if (!(filter
& DO_FLAGS
))
163 if (filter
& (is_rev_argument(arg
) ? DO_REVS
: DO_NOREV
)) {
170 static int show_default(void)
175 unsigned char sha1
[20];
178 if (!get_sha1(s
, sha1
)) {
179 show_rev(NORMAL
, sha1
, s
);
186 static int show_reference(const char *refname
, const unsigned char *sha1
, int flag
, void *cb_data
)
188 show_rev(NORMAL
, sha1
, refname
);
192 static int anti_reference(const char *refname
, const unsigned char *sha1
, int flag
, void *cb_data
)
194 show_rev(REVERSED
, sha1
, refname
);
198 static void show_datestring(const char *flag
, const char *datestr
)
200 static char buffer
[100];
202 /* date handling requires both flags and revs */
203 if ((filter
& (DO_FLAGS
| DO_REVS
)) != (DO_FLAGS
| DO_REVS
))
205 snprintf(buffer
, sizeof(buffer
), "%s%lu", flag
, approxidate(datestr
));
209 static int show_file(const char *arg
)
212 if ((filter
& (DO_NONFLAGS
|DO_NOREV
)) == (DO_NONFLAGS
|DO_NOREV
)) {
219 static int try_difference(const char *arg
)
222 unsigned char sha1
[20];
223 unsigned char end
[20];
228 if (!(dotdot
= strstr(arg
, "..")))
232 symmetric
= (*next
== '.');
241 if (!get_sha1_committish(this, sha1
) && !get_sha1_committish(next
, end
)) {
242 show_rev(NORMAL
, end
, next
);
243 show_rev(symmetric
? NORMAL
: REVERSED
, sha1
, this);
245 struct commit_list
*exclude
;
246 struct commit
*a
, *b
;
247 a
= lookup_commit_reference(sha1
);
248 b
= lookup_commit_reference(end
);
249 exclude
= get_merge_bases(a
, b
, 1);
251 struct commit_list
*n
= exclude
->next
;
253 exclude
->item
->object
.sha1
,NULL
);
264 static int try_parent_shorthands(const char *arg
)
267 unsigned char sha1
[20];
268 struct commit
*commit
;
269 struct commit_list
*parents
;
272 if ((dotdot
= strstr(arg
, "^!")))
274 else if ((dotdot
= strstr(arg
, "^@")))
277 if (!dotdot
|| dotdot
[2])
281 if (get_sha1_committish(arg
, sha1
))
285 show_rev(NORMAL
, sha1
, arg
);
286 commit
= lookup_commit_reference(sha1
);
287 for (parents
= commit
->parents
; parents
; parents
= parents
->next
)
288 show_rev(parents_only
? NORMAL
: REVERSED
,
289 parents
->item
->object
.sha1
, arg
);
294 static int parseopt_dump(const struct option
*o
, const char *arg
, int unset
)
296 struct strbuf
*parsed
= o
->value
;
298 strbuf_addf(parsed
, " --no-%s", o
->long_name
);
299 else if (o
->short_name
)
300 strbuf_addf(parsed
, " -%c", o
->short_name
);
302 strbuf_addf(parsed
, " --%s", o
->long_name
);
304 strbuf_addch(parsed
, ' ');
305 sq_quote_buf(parsed
, arg
);
310 static const char *skipspaces(const char *s
)
317 static int cmd_parseopt(int argc
, const char **argv
, const char *prefix
)
319 static int keep_dashdash
= 0, stop_at_non_option
= 0;
320 static char const * const parseopt_usage
[] = {
321 "git rev-parse --parseopt [options] -- [<args>...]",
324 static struct option parseopt_opts
[] = {
325 OPT_BOOLEAN(0, "keep-dashdash", &keep_dashdash
,
326 "keep the `--` passed as an arg"),
327 OPT_BOOLEAN(0, "stop-at-non-option", &stop_at_non_option
,
328 "stop parsing after the "
329 "first non-option argument"),
333 struct strbuf sb
= STRBUF_INIT
, parsed
= STRBUF_INIT
;
334 const char **usage
= NULL
;
335 struct option
*opts
= NULL
;
336 int onb
= 0, osz
= 0, unb
= 0, usz
= 0;
338 strbuf_addstr(&parsed
, "set --");
339 argc
= parse_options(argc
, argv
, prefix
, parseopt_opts
, parseopt_usage
,
340 PARSE_OPT_KEEP_DASHDASH
);
341 if (argc
< 1 || strcmp(argv
[0], "--"))
342 usage_with_options(parseopt_usage
, parseopt_opts
);
344 /* get the usage up to the first line with a -- on it */
346 if (strbuf_getline(&sb
, stdin
, '\n') == EOF
)
347 die("premature end of input");
348 ALLOC_GROW(usage
, unb
+ 1, usz
);
349 if (!strcmp("--", sb
.buf
)) {
351 die("no usage string given before the `--' separator");
355 usage
[unb
++] = strbuf_detach(&sb
, NULL
);
358 /* parse: (<short>|<short>,<long>|<long>)[=?]? SP+ <help> */
359 while (strbuf_getline(&sb
, stdin
, '\n') != EOF
) {
366 ALLOC_GROW(opts
, onb
+ 1, osz
);
367 memset(opts
+ onb
, 0, sizeof(opts
[onb
]));
370 s
= strchr(sb
.buf
, ' ');
371 if (!s
|| *sb
.buf
== ' ') {
372 o
->type
= OPTION_GROUP
;
373 o
->help
= xstrdup(skipspaces(sb
.buf
));
377 o
->type
= OPTION_CALLBACK
;
378 o
->help
= xstrdup(skipspaces(s
));
380 o
->flags
= PARSE_OPT_NOARG
;
381 o
->callback
= &parseopt_dump
;
382 while (s
> sb
.buf
&& strchr("*=?!", s
[-1])) {
385 o
->flags
&= ~PARSE_OPT_NOARG
;
388 o
->flags
&= ~PARSE_OPT_NOARG
;
389 o
->flags
|= PARSE_OPT_OPTARG
;
392 o
->flags
|= PARSE_OPT_NONEG
;
395 o
->flags
|= PARSE_OPT_HIDDEN
;
400 if (s
- sb
.buf
== 1) /* short option only */
401 o
->short_name
= *sb
.buf
;
402 else if (sb
.buf
[1] != ',') /* long option only */
403 o
->long_name
= xmemdupz(sb
.buf
, s
- sb
.buf
);
405 o
->short_name
= *sb
.buf
;
406 o
->long_name
= xmemdupz(sb
.buf
+ 2, s
- sb
.buf
- 2);
411 /* put an OPT_END() */
412 ALLOC_GROW(opts
, onb
+ 1, osz
);
413 memset(opts
+ onb
, 0, sizeof(opts
[onb
]));
414 argc
= parse_options(argc
, argv
, prefix
, opts
, usage
,
415 (keep_dashdash
? PARSE_OPT_KEEP_DASHDASH
: 0) |
416 (stop_at_non_option
? PARSE_OPT_STOP_AT_NON_OPTION
: 0) |
417 PARSE_OPT_SHELL_EVAL
);
419 strbuf_addf(&parsed
, " --");
420 sq_quote_argv(&parsed
, argv
, 0);
425 static int cmd_sq_quote(int argc
, const char **argv
)
427 struct strbuf buf
= STRBUF_INIT
;
430 sq_quote_argv(&buf
, argv
, 0);
431 printf("%s\n", buf
.buf
);
432 strbuf_release(&buf
);
437 static void die_no_single_rev(int quiet
)
442 die("Needed a single revision");
445 static const char builtin_rev_parse_usage
[] =
446 "git rev-parse --parseopt [options] -- [<args>...]\n"
447 " or: git rev-parse --sq-quote [<arg>...]\n"
448 " or: git rev-parse [options] [<arg>...]\n"
450 "Run \"git rev-parse --parseopt -h\" for more information on the first usage.";
452 int cmd_rev_parse(int argc
, const char **argv
, const char *prefix
)
454 int i
, as_is
= 0, verify
= 0, quiet
= 0, revs_count
= 0, type
= 0;
455 unsigned char sha1
[20];
456 const char *name
= NULL
;
458 if (argc
> 1 && !strcmp("--parseopt", argv
[1]))
459 return cmd_parseopt(argc
- 1, argv
+ 1, prefix
);
461 if (argc
> 1 && !strcmp("--sq-quote", argv
[1]))
462 return cmd_sq_quote(argc
- 2, argv
+ 2);
464 if (argc
== 2 && !strcmp("--local-env-vars", argv
[1])) {
466 for (i
= 0; local_repo_env
[i
]; i
++)
467 printf("%s\n", local_repo_env
[i
]);
471 if (argc
> 2 && !strcmp(argv
[1], "--resolve-git-dir")) {
472 const char *gitdir
= resolve_gitdir(argv
[2]);
474 die("not a gitdir '%s'", argv
[2]);
479 if (argc
> 1 && !strcmp("-h", argv
[1]))
480 usage(builtin_rev_parse_usage
);
482 prefix
= setup_git_directory();
483 git_config(git_default_config
, NULL
);
484 for (i
= 1; i
< argc
; i
++) {
485 const char *arg
= argv
[i
];
488 if (show_file(arg
) && as_is
< 2)
489 verify_filename(prefix
, arg
);
492 if (!strcmp(arg
,"-n")) {
494 die("-n requires an argument");
495 if ((filter
& DO_FLAGS
) && (filter
& DO_REVS
)) {
501 if (!prefixcmp(arg
, "-n")) {
502 if ((filter
& DO_FLAGS
) && (filter
& DO_REVS
))
508 if (!strcmp(arg
, "--")) {
510 /* Pass on the "--" if we show anything but files.. */
511 if (filter
& (DO_FLAGS
| DO_REVS
))
515 if (!strcmp(arg
, "--default")) {
520 if (!strcmp(arg
, "--revs-only")) {
524 if (!strcmp(arg
, "--no-revs")) {
528 if (!strcmp(arg
, "--flags")) {
529 filter
&= ~DO_NONFLAGS
;
532 if (!strcmp(arg
, "--no-flags")) {
536 if (!strcmp(arg
, "--verify")) {
537 filter
&= ~(DO_FLAGS
|DO_NOREV
);
541 if (!strcmp(arg
, "--quiet") || !strcmp(arg
, "-q")) {
545 if (!strcmp(arg
, "--short") ||
546 !prefixcmp(arg
, "--short=")) {
547 filter
&= ~(DO_FLAGS
|DO_NOREV
);
549 abbrev
= DEFAULT_ABBREV
;
551 abbrev
= strtoul(arg
+ 8, NULL
, 10);
552 if (abbrev
< MINIMUM_ABBREV
)
553 abbrev
= MINIMUM_ABBREV
;
554 else if (40 <= abbrev
)
558 if (!strcmp(arg
, "--sq")) {
562 if (!strcmp(arg
, "--not")) {
563 show_type
^= REVERSED
;
566 if (!strcmp(arg
, "--symbolic")) {
567 symbolic
= SHOW_SYMBOLIC_ASIS
;
570 if (!strcmp(arg
, "--symbolic-full-name")) {
571 symbolic
= SHOW_SYMBOLIC_FULL
;
574 if (!prefixcmp(arg
, "--abbrev-ref") &&
575 (!arg
[12] || arg
[12] == '=')) {
577 abbrev_ref_strict
= warn_ambiguous_refs
;
578 if (arg
[12] == '=') {
579 if (!strcmp(arg
+ 13, "strict"))
580 abbrev_ref_strict
= 1;
581 else if (!strcmp(arg
+ 13, "loose"))
582 abbrev_ref_strict
= 0;
584 die("unknown mode for %s", arg
);
588 if (!strcmp(arg
, "--all")) {
589 for_each_ref(show_reference
, NULL
);
592 if (!strcmp(arg
, "--bisect")) {
593 for_each_ref_in("refs/bisect/bad", show_reference
, NULL
);
594 for_each_ref_in("refs/bisect/good", anti_reference
, NULL
);
597 if (!prefixcmp(arg
, "--branches=")) {
598 for_each_glob_ref_in(show_reference
, arg
+ 11,
599 "refs/heads/", NULL
);
602 if (!strcmp(arg
, "--branches")) {
603 for_each_branch_ref(show_reference
, NULL
);
606 if (!prefixcmp(arg
, "--tags=")) {
607 for_each_glob_ref_in(show_reference
, arg
+ 7,
611 if (!strcmp(arg
, "--tags")) {
612 for_each_tag_ref(show_reference
, NULL
);
615 if (!prefixcmp(arg
, "--glob=")) {
616 for_each_glob_ref(show_reference
, arg
+ 7, NULL
);
619 if (!prefixcmp(arg
, "--remotes=")) {
620 for_each_glob_ref_in(show_reference
, arg
+ 10,
621 "refs/remotes/", NULL
);
624 if (!strcmp(arg
, "--remotes")) {
625 for_each_remote_ref(show_reference
, NULL
);
628 if (!strcmp(arg
, "--show-toplevel")) {
629 const char *work_tree
= get_git_work_tree();
634 if (!strcmp(arg
, "--show-prefix")) {
639 if (!strcmp(arg
, "--show-cdup")) {
640 const char *pfx
= prefix
;
641 if (!is_inside_work_tree()) {
642 const char *work_tree
=
645 printf("%s\n", work_tree
);
649 pfx
= strchr(pfx
, '/');
658 if (!strcmp(arg
, "--git-dir")) {
659 const char *gitdir
= getenv(GIT_DIR_ENVIRONMENT
);
660 static char cwd
[PATH_MAX
];
670 if (!getcwd(cwd
, PATH_MAX
))
671 die_errno("unable to get current working directory");
673 printf("%s%s.git\n", cwd
, len
&& cwd
[len
-1] != '/' ? "/" : "");
676 if (!strcmp(arg
, "--is-inside-git-dir")) {
677 printf("%s\n", is_inside_git_dir() ? "true"
681 if (!strcmp(arg
, "--is-inside-work-tree")) {
682 printf("%s\n", is_inside_work_tree() ? "true"
686 if (!strcmp(arg
, "--is-bare-repository")) {
687 printf("%s\n", is_bare_repository() ? "true"
691 if (!prefixcmp(arg
, "--since=")) {
692 show_datestring("--max-age=", arg
+8);
695 if (!prefixcmp(arg
, "--after=")) {
696 show_datestring("--max-age=", arg
+8);
699 if (!prefixcmp(arg
, "--before=")) {
700 show_datestring("--min-age=", arg
+9);
703 if (!prefixcmp(arg
, "--until=")) {
704 show_datestring("--min-age=", arg
+8);
707 if (show_flag(arg
) && verify
)
708 die_no_single_rev(quiet
);
712 /* Not a flag argument */
713 if (try_difference(arg
))
715 if (try_parent_shorthands(arg
))
723 if (!get_sha1(name
, sha1
)) {
727 show_rev(type
, sha1
, name
);
731 die_no_single_rev(quiet
);
735 verify_filename(prefix
, arg
);
738 if (revs_count
== 1) {
739 show_rev(type
, sha1
, name
);
741 } else if (revs_count
== 0 && show_default())
743 die_no_single_rev(quiet
);