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#include "cache.h"
#include "refs.h"
#include "object.h"
#include "tag.h"
static const char show_ref_usage[] = "git show-ref [-q|--quiet] [--verify] [-h|--head] [-d|--dereference] [-s|--hash[=<length>]] [--abbrev[=<length>]] [--tags] [--heads] [--] [pattern*]";
static int deref_tags = 0, show_head = 0, tags_only = 0, heads_only = 0,
found_match = 0, verify = 0, quiet = 0, hash_only = 0, abbrev = 0;
static const char **pattern;
static int show_ref(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
{
struct object *obj;
const char *hex;
if (tags_only || heads_only) {
int match;
match = heads_only && !strncmp(refname, "refs/heads/", 11);
match |= tags_only && !strncmp(refname, "refs/tags/", 10);
if (!match)
return 0;
}
if (pattern) {
int reflen = strlen(refname);
const char **p = pattern, *m;
while ((m = *p++) != NULL) {
int len = strlen(m);
if (len > reflen)
continue;
if (memcmp(m, refname + reflen - len, len))
continue;
if (len == reflen)
goto match;
/* "--verify" requires an exact match */
if (verify)
continue;
if (refname[reflen - len - 1] == '/')
goto match;
}
return 0;
}
match:
found_match++;
obj = parse_object(sha1);
if (!obj) {
if (quiet)
return 0;
die("git-show-ref: bad ref %s (%s)", refname, sha1_to_hex(sha1));
}
if (quiet)
return 0;
hex = find_unique_abbrev(sha1, abbrev);
if (hash_only)
printf("%s\n", hex);
else
printf("%s %s\n", hex, refname);
if (deref_tags && obj->type == OBJ_TAG) {
obj = deref_tag(obj, refname, 0);
hex = find_unique_abbrev(obj->sha1, abbrev);
printf("%s %s^{}\n", hex, refname);
}
return 0;
}
int cmd_show_ref(int argc, const char **argv, const char *prefix)
{
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg != '-') {
pattern = argv + i;
break;
}
if (!strcmp(arg, "--")) {
pattern = argv + i + 1;
if (!*pattern)
pattern = NULL;
break;
}
if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) {
quiet = 1;
continue;
}
if (!strcmp(arg, "-h") || !strcmp(arg, "--head")) {
show_head = 1;
continue;
}
if (!strcmp(arg, "-d") || !strcmp(arg, "--dereference")) {
deref_tags = 1;
continue;
}
if (!strcmp(arg, "-s") || !strcmp(arg, "--hash")) {
hash_only = 1;
continue;
}
if (!strncmp(arg, "--hash=", 7) ||
(!strncmp(arg, "--abbrev", 8) &&
(arg[8] == '=' || arg[8] == '\0'))) {
if (arg[3] != 'h' && !arg[8])
/* --abbrev only */
abbrev = DEFAULT_ABBREV;
else {
/* --hash= or --abbrev= */
char *end;
if (arg[3] == 'h') {
hash_only = 1;
arg += 7;
}
else
arg += 9;
abbrev = strtoul(arg, &end, 10);
if (*end || abbrev > 40)
usage(show_ref_usage);
if (abbrev < MINIMUM_ABBREV)
abbrev = MINIMUM_ABBREV;
}
continue;
}
if (!strcmp(arg, "--verify")) {
verify = 1;
continue;
}
if (!strcmp(arg, "--tags")) {
tags_only = 1;
continue;
}
if (!strcmp(arg, "--heads")) {
heads_only = 1;
continue;
}
usage(show_ref_usage);
}
if (show_head)
head_ref(show_ref, NULL);
for_each_ref(show_ref, NULL);
if (!found_match) {
if (verify && !quiet)
die("No match");
return 1;
}
return 0;
}
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