From 854b4629f97fb216a91805706cd61b33beb49172 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lukas=20Sandstr=C3=B6m?= Date: Tue, 13 Jun 2006 22:22:00 +0200 Subject: Make git-update-ref a builtin MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Lukas Sandström Signed-off-by: Junio C Hamano --- builtin-update-ref.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 builtin-update-ref.c (limited to 'builtin-update-ref.c') diff --git a/builtin-update-ref.c b/builtin-update-ref.c new file mode 100644 index 0000000000..00333c7e7c --- /dev/null +++ b/builtin-update-ref.c @@ -0,0 +1,59 @@ +#include "cache.h" +#include "refs.h" +#include "builtin.h" + +static const char git_update_ref_usage[] = +"git-update-ref [] [-m ]"; + +int cmd_update_ref(int argc, const char **argv, char **envp) +{ + const char *refname=NULL, *value=NULL, *oldval=NULL, *msg=NULL; + struct ref_lock *lock; + unsigned char sha1[20], oldsha1[20]; + int i; + + setup_git_directory(); + git_config(git_default_config); + + for (i = 1; i < argc; i++) { + if (!strcmp("-m", argv[i])) { + if (i+1 >= argc) + usage(git_update_ref_usage); + msg = argv[++i]; + if (!*msg) + die("Refusing to perform update with empty message."); + if (strchr(msg, '\n')) + die("Refusing to perform update with \\n in message."); + continue; + } + if (!refname) { + refname = argv[i]; + continue; + } + if (!value) { + value = argv[i]; + continue; + } + if (!oldval) { + oldval = argv[i]; + continue; + } + } + if (!refname || !value) + usage(git_update_ref_usage); + + if (get_sha1(value, sha1)) + die("%s: not a valid SHA1", value); + memset(oldsha1, 0, 20); + if (oldval && get_sha1(oldval, oldsha1)) + die("%s: not a valid old SHA1", oldval); + + lock = lock_any_ref_for_update(refname, oldval ? oldsha1 : NULL, 0); + if (!lock) + return 1; + if (write_ref_sha1(lock, sha1, msg) < 0) + return 1; + + /* write_ref_sha1 always unlocks the ref, no need to do it explicitly */ + return 0; +} -- cgit v1.2.3