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-rw-r--r--Makefile3
-rw-r--r--builtin-show-ref.c112
-rw-r--r--builtin.h1
-rw-r--r--git.c1
4 files changed, 116 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 7b3114f3a..c3651384c 100644
--- a/Makefile
+++ b/Makefile
@@ -295,7 +295,8 @@ BUILTIN_OBJS = \
builtin-upload-tar.o \
builtin-verify-pack.o \
builtin-write-tree.o \
- builtin-zip-tree.o
+ builtin-zip-tree.o \
+ builtin-show-ref.o
GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
LIBS = $(GITLIBS) -lz
diff --git a/builtin-show-ref.c b/builtin-show-ref.c
new file mode 100644
index 000000000..161b2367e
--- /dev/null
+++ b/builtin-show-ref.c
@@ -0,0 +1,112 @@
+#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|--deref] [--tags] [--heads] [--] [pattern*]";
+
+static int deref_tags = 0, show_head = 0, tags_only = 0, heads_only = 0, found_match = 0, verify = 0, quiet = 0;
+static const char **pattern;
+
+static int show_ref(const char *refname, const unsigned char *sha1)
+{
+ struct object *obj;
+
+ 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;
+ printf("%s %s\n", sha1_to_hex(sha1), refname);
+ if (deref_tags && obj->type == OBJ_TAG) {
+ obj = deref_tag(obj, refname, 0);
+ printf("%s %s^{}\n", sha1_to_hex(obj->sha1), 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, "--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);
+ for_each_ref(show_ref);
+ if (!found_match) {
+ if (verify && !quiet)
+ die("No match");
+ return 1;
+ }
+ return 0;
+}
diff --git a/builtin.h b/builtin.h
index 398eafbf9..a7242beeb 100644
--- a/builtin.h
+++ b/builtin.h
@@ -60,5 +60,6 @@ extern int cmd_version(int argc, const char **argv, const char *prefix);
extern int cmd_whatchanged(int argc, const char **argv, const char *prefix);
extern int cmd_write_tree(int argc, const char **argv, const char *prefix);
extern int cmd_verify_pack(int argc, const char **argv, const char *prefix);
+extern int cmd_show_ref(int argc, const char **argv, const char *prefix);
#endif
diff --git a/git.c b/git.c
index 8c182a5f5..fedd53683 100644
--- a/git.c
+++ b/git.c
@@ -266,6 +266,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
{ "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER },
{ "write-tree", cmd_write_tree, RUN_SETUP },
{ "verify-pack", cmd_verify_pack },
+ { "show-ref", cmd_show_ref, RUN_SETUP },
};
int i;