X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=builtin-clone.c;h=92826cd14c5df6b216b4f50bd80facd061b58ef9;hb=521537476fe99b97bfcdf1b8f0c579061af5fd3e;hp=18b9392334a0931076855b175ab368deea8ac122;hpb=4a16d072723b48699ea162da24eff05eba298834;p=git.git

diff --git a/builtin-clone.c b/builtin-clone.c
index 18b939233..92826cd14 100644
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -350,14 +350,26 @@ static struct ref *write_remote_refs(const struct ref *refs,
 	return local_refs;
 }
 
+static void install_branch_config(const char *local,
+				  const char *origin,
+				  const char *remote)
+{
+	struct strbuf key = STRBUF_INIT;
+	strbuf_addf(&key, "branch.%s.remote", local);
+	git_config_set(key.buf, origin);
+	strbuf_reset(&key);
+	strbuf_addf(&key, "branch.%s.merge", local);
+	git_config_set(key.buf, remote);
+	strbuf_release(&key);
+}
+
 int cmd_clone(int argc, const char **argv, const char *prefix)
 {
-	int use_local_hardlinks = 1;
-	int use_separate_remote = 1;
 	int is_bundle = 0;
 	struct stat buf;
 	const char *repo_name, *repo, *work_tree, *git_dir;
 	char *path, *dir;
+	int dest_exists;
 	const struct ref *refs, *head_points_at, *remote_head, *mapped_refs;
 	struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
 	struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
@@ -374,9 +386,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	if (argc == 0)
 		die("You must specify a repository to clone.");
 
-	if (option_no_hardlinks)
-		use_local_hardlinks = 0;
-
 	if (option_mirror)
 		option_bare = 1;
 
@@ -385,7 +394,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 			die("--bare and --origin %s options are incompatible.",
 			    option_origin);
 		option_no_checkout = 1;
-		use_separate_remote = 0;
 	}
 
 	if (!option_origin)
@@ -407,8 +415,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		dir = guess_dir_name(repo_name, is_bundle, option_bare);
 	strip_trailing_slashes(dir);
 
-	if (!stat(dir, &buf))
-		die("destination directory '%s' already exists.", dir);
+	dest_exists = !stat(dir, &buf);
+	if (dest_exists && !is_empty_dir(dir))
+		die("destination path '%s' already exists and is not "
+			"an empty directory.", dir);
 
 	strbuf_addf(&reflog_msg, "clone: from %s", repo);
 
@@ -432,14 +442,14 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		if (safe_create_leading_directories_const(work_tree) < 0)
 			die("could not create leading directories of '%s': %s",
 					work_tree, strerror(errno));
-		if (mkdir(work_tree, 0755))
+		if (!dest_exists && mkdir(work_tree, 0755))
 			die("could not create work tree dir '%s': %s.",
 					work_tree, strerror(errno));
 		set_git_work_tree(work_tree);
 	}
 	junk_git_dir = git_dir;
 	atexit(remove_junk);
-	sigchain_push(SIGINT, remove_junk_on_signal);
+	sigchain_push_common(remove_junk_on_signal);
 
 	setenv(CONFIG_ENVIRONMENT, xstrdup(mkpath("%s/config", git_dir)), 1);
 
@@ -520,14 +530,26 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 					     option_upload_pack);
 
 		refs = transport_get_remote_refs(transport);
-		transport_fetch_refs(transport, refs);
+		if(refs)
+			transport_fetch_refs(transport, refs);
 	}
 
-	clear_extra_refs();
+	if (refs) {
+		clear_extra_refs();
 
-	mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf);
+		mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf);
 
-	head_points_at = locate_head(refs, mapped_refs, &remote_head);
+		head_points_at = locate_head(refs, mapped_refs, &remote_head);
+	}
+	else {
+		warning("You appear to have cloned an empty repository.");
+		head_points_at = NULL;
+		remote_head = NULL;
+		option_no_checkout = 1;
+		if (!option_bare)
+			install_branch_config("master", option_origin,
+					      "refs/heads/master");
+	}
 
 	if (head_points_at) {
 		/* Local default branch link */
@@ -555,11 +577,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 				      head_points_at->peer_ref->name,
 				      reflog_msg.buf);
 
-			strbuf_addf(&key, "branch.%s.remote", head);
-			git_config_set(key.buf, option_origin);
-			strbuf_reset(&key);
-			strbuf_addf(&key, "branch.%s.merge", head);
-			git_config_set(key.buf, head_points_at->name);
+			install_branch_config(head, option_origin,
+					      head_points_at->name);
 		}
 	} else if (remote_head) {
 		/* Source had detached HEAD pointing somewhere. */