Merge branch 'tg/git-remote'

The internal API to interact with "remote.*" configuration
variables has been streamlined.

* tg/git-remote:
  remote: use remote_is_configured() for add and rename
  remote: actually check if remote exits
  remote: simplify remote_is_configured()
  remote: use parse_config_key

5 files changed, 81 insertions, 65 deletions

diff --git a/builtin/fetch.c b/builtin/fetch.c
index 55919a9e4f..48c45ea5e3 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -1022,10 +1022,9 @@ static int add_remote_or_group(const char *name, struct string_list *list)
 
 	git_config(get_remote_group, &g);
 	if (list->nr == prev_nr) {
-		struct remote *remote;
-		if (!remote_is_configured(name))
+		struct remote *remote = remote_get(name);
+		if (!remote_is_configured(remote))
 			return 0;
-		remote = remote_get(name);
 		string_list_append(list, remote->name);
 	}
 	return 1;
diff --git a/builtin/remote.c b/builtin/remote.c
index 2b2ff9b7d2..bd57f1b29b 100644
--- a/builtin/remote.c
+++ b/builtin/remote.c
@@ -186,10 +186,7 @@ static int add(int argc, const char **argv)
 	url = argv[1];
 
 	remote = remote_get(name);
-	if (remote && (remote->url_nr > 1 ||
-			(strcmp(name, remote->url[0]) &&
-				strcmp(url, remote->url[0])) ||
-			remote->fetch_refspec_nr))
+	if (remote_is_configured(remote))
 		die(_("remote %s already exists."), name);
 
 	strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
@@ -634,14 +631,14 @@ static int mv(int argc, const char **argv)
 	rename.remote_branches = &remote_branches;
 
 	oldremote = remote_get(rename.old);
-	if (!oldremote)
+	if (!remote_is_configured(oldremote))
 		die(_("No such remote: %s"), rename.old);
 
 	if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 		return migrate_file(oldremote);
 
 	newremote = remote_get(rename.new);
-	if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
+	if (remote_is_configured(newremote))
 		die(_("remote %s already exists."), rename.new);
 
 	strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
@@ -773,7 +770,7 @@ static int rm(int argc, const char **argv)
 		usage_with_options(builtin_remote_rm_usage, options);
 
 	remote = remote_get(argv[1]);
-	if (!remote)
+	if (!remote_is_configured(remote))
 		die(_("No such remote: %s"), argv[1]);
 
 	known_remotes.to_delete = remote;
@@ -1441,9 +1438,9 @@ static int set_remote_branches(const char *remotename, const char **branches,
 
 	strbuf_addf(&key, "remote.%s.fetch", remotename);
 
-	if (!remote_is_configured(remotename))
-		die(_("No such remote '%s'"), remotename);
 	remote = remote_get(remotename);
+	if (!remote_is_configured(remote))
+		die(_("No such remote '%s'"), remotename);
 
 	if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
 		strbuf_release(&key);
@@ -1498,9 +1495,9 @@ static int get_url(int argc, const char **argv)
 
 	remotename = argv[0];
 
-	if (!remote_is_configured(remotename))
-		die(_("No such remote '%s'"), remotename);
 	remote = remote_get(remotename);
+	if (!remote_is_configured(remote))
+		die(_("No such remote '%s'"), remotename);
 
 	url_nr = 0;
 	if (push_mode) {
@@ -1566,9 +1563,9 @@ static int set_url(int argc, const char **argv)
 	if (delete_mode)
 		oldurl = newurl;
 
-	if (!remote_is_configured(remotename))
-		die(_("No such remote '%s'"), remotename);
 	remote = remote_get(remotename);
+	if (!remote_is_configured(remote))
+		die(_("No such remote '%s'"), remotename);
 
 	if (push_mode) {
 		strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
diff --git a/remote.c b/remote.c
index 02e698a5e0..f001681105 100644
--- a/remote.c
+++ b/remote.c
@@ -318,93 +318,88 @@ static void read_branches_file(struct remote *remote)
 static int handle_config(const char *key, const char *value, void *cb)
 {
 	const char *name;
+	int namelen;
 	const char *subkey;
 	struct remote *remote;
 	struct branch *branch;
-	if (starts_with(key, "branch.")) {
-		name = key + 7;
-		subkey = strrchr(name, '.');
-		if (!subkey)
+	if (parse_config_key(key, "branch", &name, &namelen, &subkey) >= 0) {
+		if (!name)
 			return 0;
-		branch = make_branch(name, subkey - name);
-		if (!strcmp(subkey, ".remote")) {
+		branch = make_branch(name, namelen);
+		if (!strcmp(subkey, "remote")) {
 			return git_config_string(&branch->remote_name, key, value);
-		} else if (!strcmp(subkey, ".pushremote")) {
+		} else if (!strcmp(subkey, "pushremote")) {
 			return git_config_string(&branch->pushremote_name, key, value);
-		} else if (!strcmp(subkey, ".merge")) {
+		} else if (!strcmp(subkey, "merge")) {
 			if (!value)
 				return config_error_nonbool(key);
 			add_merge(branch, xstrdup(value));
 		}
 		return 0;
 	}
-	if (starts_with(key, "url.")) {
+	if (parse_config_key(key, "url", &name, &namelen, &subkey) >= 0) {
 		struct rewrite *rewrite;
-		name = key + 4;
-		subkey = strrchr(name, '.');
-		if (!subkey)
+		if (!name)
 			return 0;
-		if (!strcmp(subkey, ".insteadof")) {
-			rewrite = make_rewrite(&rewrites, name, subkey - name);
+		if (!strcmp(subkey, "insteadof")) {
+			rewrite = make_rewrite(&rewrites, name, namelen);
 			if (!value)
 				return config_error_nonbool(key);
 			add_instead_of(rewrite, xstrdup(value));
-		} else if (!strcmp(subkey, ".pushinsteadof")) {
-			rewrite = make_rewrite(&rewrites_push, name, subkey - name);
+		} else if (!strcmp(subkey, "pushinsteadof")) {
+			rewrite = make_rewrite(&rewrites_push, name, namelen);
 			if (!value)
 				return config_error_nonbool(key);
 			add_instead_of(rewrite, xstrdup(value));
 		}
 	}
 
-	if (!starts_with(key,  "remote."))
+	if (parse_config_key(key, "remote", &name, &namelen, &subkey) < 0)
 		return 0;
-	name = key + 7;
 
 	/* Handle remote.* variables */
-	if (!strcmp(name, "pushdefault"))
+	if (!name && !strcmp(subkey, "pushdefault"))
 		return git_config_string(&pushremote_name, key, value);
 
+	if (!name)
+		return 0;
 	/* Handle remote.<name>.* variables */
 	if (*name == '/') {
 		warning("Config remote shorthand cannot begin with '/': %s",
 			name);
 		return 0;
 	}
-	subkey = strrchr(name, '.');
-	if (!subkey)
-		return 0;
-	remote = make_remote(name, subkey - name);
+	remote = make_remote(name, namelen);
 	remote->origin = REMOTE_CONFIG;
-	if (!strcmp(subkey, ".mirror"))
+	if (!strcmp(subkey, "mirror"))
 		remote->mirror = git_config_bool(key, value);
-	else if (!strcmp(subkey, ".skipdefaultupdate"))
+	else if (!strcmp(subkey, "skipdefaultupdate"))
 		remote->skip_default_update = git_config_bool(key, value);
-	else if (!strcmp(subkey, ".skipfetchall"))
+	else if (!strcmp(subkey, "skipfetchall"))
 		remote->skip_default_update = git_config_bool(key, value);
-	else if (!strcmp(subkey, ".prune"))
+	else if (!strcmp(subkey, "prune"))
 		remote->prune = git_config_bool(key, value);
-	else if (!strcmp(subkey, ".url")) {
+	else if (!strcmp(subkey, "url")) {
 		const char *v;
 		if (git_config_string(&v, key, value))
 			return -1;
 		add_url(remote, v);
-	} else if (!strcmp(subkey, ".pushurl")) {
+	} else if (!strcmp(subkey, "pushurl")) {
 		const char *v;
 		if (git_config_string(&v, key, value))
 			return -1;
 		add_pushurl(remote, v);
-	} else if (!strcmp(subkey, ".push")) {
+	} else if (!strcmp(subkey, "push")) {
 		const char *v;
 		if (git_config_string(&v, key, value))
 			return -1;
 		add_push_refspec(remote, v);
-	} else if (!strcmp(subkey, ".fetch")) {
+	} else if (!strcmp(subkey, "fetch")) {
 		const char *v;
 		if (git_config_string(&v, key, value))
 			return -1;
 		add_fetch_refspec(remote, v);
-	} else if (!strcmp(subkey, ".receivepack")) {
+	} else if (!strcmp(subkey, "receivepack")) {
 		const char *v;
 		if (git_config_string(&v, key, value))
 			return -1;
@@ -412,7 +407,7 @@ static int handle_config(const char *key, const char *value, void *cb)
 			remote->receivepack = v;
 		else
 			error("more than one receivepack given, using the first");
-	} else if (!strcmp(subkey, ".uploadpack")) {
+	} else if (!strcmp(subkey, "uploadpack")) {
 		const char *v;
 		if (git_config_string(&v, key, value))
 			return -1;
@@ -420,18 +415,18 @@ static int handle_config(const char *key, const char *value, void *cb)
 			remote->uploadpack = v;
 		else
 			error("more than one uploadpack given, using the first");
-	} else if (!strcmp(subkey, ".tagopt")) {
+	} else if (!strcmp(subkey, "tagopt")) {
 		if (!strcmp(value, "--no-tags"))
 			remote->fetch_tags = -1;
 		else if (!strcmp(value, "--tags"))
 			remote->fetch_tags = 2;
-	} else if (!strcmp(subkey, ".proxy")) {
+	} else if (!strcmp(subkey, "proxy")) {
 		return git_config_string((const char **)&remote->http_proxy,
 					 key, value);
-	} else if (!strcmp(subkey, ".proxyauthmethod")) {
+	} else if (!strcmp(subkey, "proxyauthmethod")) {
 		return git_config_string((const char **)&remote->http_proxy_authmethod,
 					 key, value);
-	} else if (!strcmp(subkey, ".vcs")) {
+	} else if (!strcmp(subkey, "vcs")) {
 		return git_config_string(&remote->foreign_vcs, key, value);
 	}
 	return 0;
@@ -718,18 +713,9 @@ struct remote *pushremote_get(const char *name)
 	return remote_get_1(name, pushremote_for_branch);
 }
 
-int remote_is_configured(const char *name)
+int remote_is_configured(struct remote *remote)
 {
-	struct remotes_hash_key lookup;
-	struct hashmap_entry lookup_entry;
-	read_config();
-
-	init_remotes_hash();
-	lookup.str = name;
-	lookup.len = strlen(name);
-	hashmap_entry_init(&lookup_entry, memhash(name, lookup.len));
-
-	return hashmap_get(&remotes_hash, &lookup_entry, &lookup) != NULL;
+	return remote && remote->origin;
 }
 
 int for_each_remote(each_remote_fn fn, void *priv)
diff --git a/remote.h b/remote.h
index 4fd7a0f9b2..c21fd3788c 100644
--- a/remote.h
+++ b/remote.h
@@ -5,6 +5,7 @@
 #include "hashmap.h"
 
 enum {
+	REMOTE_UNCONFIGURED = 0,
 	REMOTE_CONFIG,
 	REMOTE_REMOTES,
 	REMOTE_BRANCHES
@@ -59,7 +60,7 @@ struct remote {
 
 struct remote *remote_get(const char *name);
 struct remote *pushremote_get(const char *name);
-int remote_is_configured(const char *name);
+int remote_is_configured(struct remote *remote);
 
 typedef int each_remote_fn(struct remote *remote, void *priv);
 int for_each_remote(each_remote_fn fn, void *priv);
diff --git a/t/t5505-remote.sh b/t/t5505-remote.sh
index 0dcc752076..949725e9bc 100755
--- a/t/t5505-remote.sh
+++ b/t/t5505-remote.sh
@@ -144,6 +144,39 @@ test_expect_success 'remove remote protects local branches' '
 	)
 '
 
+test_expect_success 'remove errors out early when deleting non-existent branch' '
+	(
+		cd test &&
+		echo "fatal: No such remote: foo" >expect &&
+		test_must_fail git remote rm foo 2>actual &&
+		test_i18ncmp expect actual
+	)
+'
+
+test_expect_success 'rename errors out early when deleting non-existent branch' '
+	(
+		cd test &&
+		echo "fatal: No such remote: foo" >expect &&
+		test_must_fail git remote rename foo bar 2>actual &&
+		test_i18ncmp expect actual
+	)
+'
+
+test_expect_success 'add existing foreign_vcs remote' '
+	test_config remote.foo.vcs bar &&
+	echo "fatal: remote foo already exists." >expect &&
+	test_must_fail git remote add foo bar 2>actual &&
+	test_i18ncmp expect actual
+'
+
+test_expect_success 'add existing foreign_vcs remote' '
+	test_config remote.foo.vcs bar &&
+	test_config remote.bar.vcs bar &&
+	echo "fatal: remote bar already exists." >expect &&
+	test_must_fail git remote rename foo bar 2>actual &&
+	test_i18ncmp expect actual
+'
+
 cat >test/expect <<EOF
 * remote origin
   Fetch URL: $(pwd)/one