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authorJunio C Hamano <gitster@pobox.com>2010-03-10 23:25:18 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-03-10 23:25:18 (GMT)
commit2e0e8b68e3ba8ea87f001c45c78f9b7ce549c61f (patch)
tree12363fe88e40f042c24583e829a696505fcb9b7c /builtin/update-ref.c
parente007240cb940811a6e075d35f5c3a93a44c54f5a (diff)
parent81b50f3ce40bfdd66e5d967bf82be001039a9a98 (diff)
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Merge branch 'lt/deepen-builtin-source'
* lt/deepen-builtin-source: Move 'builtin-*' into a 'builtin/' subdirectory Conflicts: Makefile
Diffstat (limited to 'builtin/update-ref.c')
-rw-r--r--builtin/update-ref.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/builtin/update-ref.c b/builtin/update-ref.c
new file mode 100644
index 0000000..76ba1d5
--- /dev/null
+++ b/builtin/update-ref.c
@@ -0,0 +1,58 @@
+#include "cache.h"
+#include "refs.h"
+#include "builtin.h"
+#include "parse-options.h"
+
+static const char * const git_update_ref_usage[] = {
+ "git update-ref [options] -d <refname> [<oldval>]",
+ "git update-ref [options] <refname> <newval> [<oldval>]",
+ NULL
+};
+
+int cmd_update_ref(int argc, const char **argv, const char *prefix)
+{
+ const char *refname, *oldval, *msg=NULL;
+ unsigned char sha1[20], oldsha1[20];
+ int delete = 0, no_deref = 0, flags = 0;
+ struct option options[] = {
+ OPT_STRING( 'm', NULL, &msg, "reason", "reason of the update"),
+ OPT_BOOLEAN('d', NULL, &delete, "deletes the reference"),
+ OPT_BOOLEAN( 0 , "no-deref", &no_deref,
+ "update <refname> not the one it points to"),
+ OPT_END(),
+ };
+
+ git_config(git_default_config, NULL);
+ argc = parse_options(argc, argv, prefix, options, git_update_ref_usage,
+ 0);
+ if (msg && !*msg)
+ die("Refusing to perform update with empty message.");
+
+ if (delete) {
+ if (argc < 1 || argc > 2)
+ usage_with_options(git_update_ref_usage, options);
+ refname = argv[0];
+ oldval = argv[1];
+ } else {
+ const char *value;
+ if (argc < 2 || argc > 3)
+ usage_with_options(git_update_ref_usage, options);
+ refname = argv[0];
+ value = argv[1];
+ oldval = argv[2];
+ if (get_sha1(value, sha1))
+ die("%s: not a valid SHA1", value);
+ }
+
+ hashclr(oldsha1); /* all-zero hash in case oldval is the empty string */
+ if (oldval && *oldval && get_sha1(oldval, oldsha1))
+ die("%s: not a valid old SHA1", oldval);
+
+ if (no_deref)
+ flags = REF_NODEREF;
+ if (delete)
+ return delete_ref(refname, oldval ? oldsha1 : NULL, flags);
+ else
+ return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
+ flags, DIE_ON_ERR);
+}