in builtin/rev-parse.c [656:1079]
int cmd_rev_parse(int argc, const char **argv, const char *prefix)
{
int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
int did_repo_setup = 0;
int has_dashdash = 0;
int output_prefix = 0;
struct object_id oid;
unsigned int flags = 0;
const char *name = NULL;
struct object_context unused;
struct strbuf buf = STRBUF_INIT;
const int hexsz = the_hash_algo->hexsz;
int seen_end_of_options = 0;
enum format_type format = FORMAT_DEFAULT;
if (argc > 1 && !strcmp("--parseopt", argv[1]))
return cmd_parseopt(argc - 1, argv + 1, prefix);
if (argc > 1 && !strcmp("--sq-quote", argv[1]))
return cmd_sq_quote(argc - 2, argv + 2);
if (argc > 1 && !strcmp("-h", argv[1]))
usage(builtin_rev_parse_usage);
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
has_dashdash = 1;
break;
}
}
/* No options; just report on whether we're in a git repo or not. */
if (argc == 1) {
setup_git_directory();
git_config(git_default_config, NULL);
return 0;
}
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (as_is) {
if (show_file(arg, output_prefix) && as_is < 2)
verify_filename(prefix, arg, 0);
continue;
}
if (!seen_end_of_options) {
if (!strcmp(arg, "--local-env-vars")) {
int i;
for (i = 0; local_repo_env[i]; i++)
printf("%s\n", local_repo_env[i]);
continue;
}
if (!strcmp(arg, "--resolve-git-dir")) {
const char *gitdir = argv[++i];
if (!gitdir)
die(_("--resolve-git-dir requires an argument"));
gitdir = resolve_gitdir(gitdir);
if (!gitdir)
die(_("not a gitdir '%s'"), argv[i]);
puts(gitdir);
continue;
}
}
/* The rest of the options require a git repository. */
if (!did_repo_setup) {
prefix = setup_git_directory();
git_config(git_default_config, NULL);
did_repo_setup = 1;
}
if (!strcmp(arg, "--")) {
as_is = 2;
/* Pass on the "--" if we show anything but files.. */
if (filter & (DO_FLAGS | DO_REVS))
show_file(arg, 0);
continue;
}
if (!seen_end_of_options && *arg == '-') {
if (!strcmp(arg, "--git-path")) {
if (!argv[i + 1])
die(_("--git-path requires an argument"));
strbuf_reset(&buf);
print_path(git_path("%s", argv[i + 1]), prefix,
format,
DEFAULT_RELATIVE_IF_SHARED);
i++;
continue;
}
if (!strcmp(arg,"-n")) {
if (++i >= argc)
die(_("-n requires an argument"));
if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
show(arg);
show(argv[i]);
}
continue;
}
if (starts_with(arg, "-n")) {
if ((filter & DO_FLAGS) && (filter & DO_REVS))
show(arg);
continue;
}
if (opt_with_value(arg, "--path-format", &arg)) {
if (!arg)
die(_("--path-format requires an argument"));
if (!strcmp(arg, "absolute")) {
format = FORMAT_CANONICAL;
} else if (!strcmp(arg, "relative")) {
format = FORMAT_RELATIVE;
} else {
die(_("unknown argument to --path-format: %s"), arg);
}
continue;
}
if (!strcmp(arg, "--default")) {
def = argv[++i];
if (!def)
die(_("--default requires an argument"));
continue;
}
if (!strcmp(arg, "--prefix")) {
prefix = argv[++i];
if (!prefix)
die(_("--prefix requires an argument"));
startup_info->prefix = prefix;
output_prefix = 1;
continue;
}
if (!strcmp(arg, "--revs-only")) {
filter &= ~DO_NOREV;
continue;
}
if (!strcmp(arg, "--no-revs")) {
filter &= ~DO_REVS;
continue;
}
if (!strcmp(arg, "--flags")) {
filter &= ~DO_NONFLAGS;
continue;
}
if (!strcmp(arg, "--no-flags")) {
filter &= ~DO_FLAGS;
continue;
}
if (!strcmp(arg, "--verify")) {
filter &= ~(DO_FLAGS|DO_NOREV);
verify = 1;
continue;
}
if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) {
quiet = 1;
flags |= GET_OID_QUIETLY;
continue;
}
if (opt_with_value(arg, "--short", &arg)) {
filter &= ~(DO_FLAGS|DO_NOREV);
verify = 1;
abbrev = DEFAULT_ABBREV;
if (!arg)
continue;
abbrev = strtoul(arg, NULL, 10);
if (abbrev < MINIMUM_ABBREV)
abbrev = MINIMUM_ABBREV;
else if (hexsz <= abbrev)
abbrev = hexsz;
continue;
}
if (!strcmp(arg, "--sq")) {
output_sq = 1;
continue;
}
if (!strcmp(arg, "--not")) {
show_type ^= REVERSED;
continue;
}
if (!strcmp(arg, "--symbolic")) {
symbolic = SHOW_SYMBOLIC_ASIS;
continue;
}
if (!strcmp(arg, "--symbolic-full-name")) {
symbolic = SHOW_SYMBOLIC_FULL;
continue;
}
if (opt_with_value(arg, "--abbrev-ref", &arg)) {
abbrev_ref = 1;
abbrev_ref_strict = warn_ambiguous_refs;
if (arg) {
if (!strcmp(arg, "strict"))
abbrev_ref_strict = 1;
else if (!strcmp(arg, "loose"))
abbrev_ref_strict = 0;
else
die(_("unknown mode for --abbrev-ref: %s"),
arg);
}
continue;
}
if (!strcmp(arg, "--all")) {
for_each_ref(show_reference, NULL);
clear_ref_exclusion(&ref_excludes);
continue;
}
if (skip_prefix(arg, "--disambiguate=", &arg)) {
for_each_abbrev(arg, show_abbrev, NULL);
continue;
}
if (!strcmp(arg, "--bisect")) {
for_each_fullref_in("refs/bisect/bad", show_reference, NULL);
for_each_fullref_in("refs/bisect/good", anti_reference, NULL);
continue;
}
if (opt_with_value(arg, "--branches", &arg)) {
handle_ref_opt(arg, "refs/heads/");
continue;
}
if (opt_with_value(arg, "--tags", &arg)) {
handle_ref_opt(arg, "refs/tags/");
continue;
}
if (skip_prefix(arg, "--glob=", &arg)) {
handle_ref_opt(arg, NULL);
continue;
}
if (opt_with_value(arg, "--remotes", &arg)) {
handle_ref_opt(arg, "refs/remotes/");
continue;
}
if (skip_prefix(arg, "--exclude=", &arg)) {
add_ref_exclusion(&ref_excludes, arg);
continue;
}
if (!strcmp(arg, "--show-toplevel")) {
const char *work_tree = get_git_work_tree();
if (work_tree)
print_path(work_tree, prefix, format, DEFAULT_UNMODIFIED);
else
die(_("this operation must be run in a work tree"));
continue;
}
if (!strcmp(arg, "--show-superproject-working-tree")) {
struct strbuf superproject = STRBUF_INIT;
if (get_superproject_working_tree(&superproject))
print_path(superproject.buf, prefix, format, DEFAULT_UNMODIFIED);
strbuf_release(&superproject);
continue;
}
if (!strcmp(arg, "--show-prefix")) {
if (prefix)
puts(prefix);
else
putchar('\n');
continue;
}
if (!strcmp(arg, "--show-cdup")) {
const char *pfx = prefix;
if (!is_inside_work_tree()) {
const char *work_tree =
get_git_work_tree();
if (work_tree)
printf("%s\n", work_tree);
continue;
}
while (pfx) {
pfx = strchr(pfx, '/');
if (pfx) {
pfx++;
printf("../");
}
}
putchar('\n');
continue;
}
if (!strcmp(arg, "--git-dir") ||
!strcmp(arg, "--absolute-git-dir")) {
const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
char *cwd;
int len;
enum format_type wanted = format;
if (arg[2] == 'g') { /* --git-dir */
if (gitdir) {
print_path(gitdir, prefix, format, DEFAULT_UNMODIFIED);
continue;
}
if (!prefix) {
print_path(".git", prefix, format, DEFAULT_UNMODIFIED);
continue;
}
} else { /* --absolute-git-dir */
wanted = FORMAT_CANONICAL;
if (!gitdir && !prefix)
gitdir = ".git";
if (gitdir) {
struct strbuf realpath = STRBUF_INIT;
strbuf_realpath(&realpath, gitdir, 1);
puts(realpath.buf);
strbuf_release(&realpath);
continue;
}
}
cwd = xgetcwd();
len = strlen(cwd);
strbuf_reset(&buf);
strbuf_addf(&buf, "%s%s.git", cwd, len && cwd[len-1] != '/' ? "/" : "");
free(cwd);
print_path(buf.buf, prefix, wanted, DEFAULT_CANONICAL);
continue;
}
if (!strcmp(arg, "--git-common-dir")) {
print_path(get_git_common_dir(), prefix, format, DEFAULT_RELATIVE_IF_SHARED);
continue;
}
if (!strcmp(arg, "--is-inside-git-dir")) {
printf("%s\n", is_inside_git_dir() ? "true"
: "false");
continue;
}
if (!strcmp(arg, "--is-inside-work-tree")) {
printf("%s\n", is_inside_work_tree() ? "true"
: "false");
continue;
}
if (!strcmp(arg, "--is-bare-repository")) {
printf("%s\n", is_bare_repository() ? "true"
: "false");
continue;
}
if (!strcmp(arg, "--is-shallow-repository")) {
printf("%s\n",
is_repository_shallow(the_repository) ? "true"
: "false");
continue;
}
if (!strcmp(arg, "--shared-index-path")) {
if (read_cache() < 0)
die(_("Could not read the index"));
if (the_index.split_index) {
const struct object_id *oid = &the_index.split_index->base_oid;
const char *path = git_path("sharedindex.%s", oid_to_hex(oid));
print_path(path, prefix, format, DEFAULT_RELATIVE);
}
continue;
}
if (skip_prefix(arg, "--since=", &arg)) {
show_datestring("--max-age=", arg);
continue;
}
if (skip_prefix(arg, "--after=", &arg)) {
show_datestring("--max-age=", arg);
continue;
}
if (skip_prefix(arg, "--before=", &arg)) {
show_datestring("--min-age=", arg);
continue;
}
if (skip_prefix(arg, "--until=", &arg)) {
show_datestring("--min-age=", arg);
continue;
}
if (opt_with_value(arg, "--show-object-format", &arg)) {
const char *val = arg ? arg : "storage";
if (strcmp(val, "storage") &&
strcmp(val, "input") &&
strcmp(val, "output"))
die(_("unknown mode for --show-object-format: %s"),
arg);
puts(the_hash_algo->name);
continue;
}
if (!strcmp(arg, "--end-of-options")) {
seen_end_of_options = 1;
if (filter & (DO_FLAGS | DO_REVS))
show_file(arg, 0);
continue;
}
if (show_flag(arg) && verify)
die_no_single_rev(quiet);
continue;
}
/* Not a flag argument */
if (try_difference(arg))
continue;
if (try_parent_shorthands(arg))
continue;
name = arg;
type = NORMAL;
if (*arg == '^') {
name++;
type = REVERSED;
}
if (!get_oid_with_context(the_repository, name,
flags, &oid, &unused)) {
if (verify)
revs_count++;
else
show_rev(type, &oid, name);
continue;
}
if (verify)
die_no_single_rev(quiet);
if (has_dashdash)
die(_("bad revision '%s'"), arg);
as_is = 1;
if (!show_file(arg, output_prefix))
continue;
verify_filename(prefix, arg, 1);
}
strbuf_release(&buf);
if (verify) {
if (revs_count == 1) {
show_rev(type, &oid, name);
return 0;
} else if (revs_count == 0 && show_default())
return 0;
die_no_single_rev(quiet);
} else
show_default();
return 0;
}