#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); }