Add git_remote_save()

include/git2/remote.h

@@ -54,6 +54,14 @@ GIT_EXTERN(int) git_remote_new(git_remote **out, git_repository *repo, const cha
 GIT_EXTERN(int) git_remote_load(git_remote **out, git_repository *repo, const char *name);
 
 /**
+ * Save a remote to its repository's configuration
+ *
+ * @param remote the remote to save to config
+ * @return GIT_SUCCESS or an error code
+ */
+GIT_EXTERN(int) git_remote_save(const git_remote *remote);
+
+/**
  * Get the remote's name
  *
  * @param remote the remote

src/remote.c

@@ -187,6 +187,56 @@ cleanup:
 	return error;
 }
 
+int git_remote_save(const git_remote *remote)
+{
+	int error;
+	git_config *config;
+	git_buf buf = GIT_BUF_INIT, value = GIT_BUF_INIT;
+
+	error = git_repository_config__weakptr(&config, remote->repo);
+	if (error < GIT_SUCCESS)
+		return error;
+
+	git_buf_printf(&buf, "remote.%s.%s", remote->name, "url");
+	if (git_buf_oom(&buf))
+		return GIT_ENOMEM;
+
+	error = git_config_set_string(config, git_buf_cstr(&buf), remote->url);
+	if (error < GIT_SUCCESS)
+		goto cleanup;
+
+	if (remote->fetch.src != NULL && remote->fetch.src != NULL) {
+		git_buf_clear(&buf);
+		git_buf_clear(&value);
+		git_buf_printf(&buf, "remote.%s.%s", remote->name, "fetch");
+		git_buf_printf(&value, "%s:%s", remote->fetch.src, remote->fetch.dst);
+		if (git_buf_oom(&buf) || git_buf_oom(&value))
+			return GIT_ENOMEM;
+
+		error = git_config_set_string(config, git_buf_cstr(&buf), git_buf_cstr(&value));
+		if (error < GIT_SUCCESS)
+			goto cleanup;
+	}
+
+	if (remote->push.src != NULL && remote->push.src != NULL) {
+		git_buf_clear(&buf);
+		git_buf_clear(&value);
+		git_buf_printf(&buf, "remote.%s.%s", remote->name, "push");
+		git_buf_printf(&value, "%s:%s", remote->push.src, remote->push.dst);
+		if (git_buf_oom(&buf) || git_buf_oom(&value))
+			return GIT_ENOMEM;
+
+		error = git_config_set_string(config, git_buf_cstr(&buf), git_buf_cstr(&value));
+		if (error < GIT_SUCCESS)
+			goto cleanup;
+	}
+
+cleanup:
+	git_buf_free(&buf);
+	git_buf_free(&value);
+	return error;
+}
+
 const char *git_remote_name(git_remote *remote)
 {
 	assert(remote);

tests-clar/network/remotes.c

@@ -52,6 +52,32 @@ void test_network_remotes__set_pushspec(void)
 	cl_assert(!strcmp(git_refspec_dst(_refspec), "refs/*"));
 }
 
+void test_network_remotes__save(void)
+{
+	git_remote_free(_remote);
+
+	/* Set up the remote and save it to config */
+	cl_git_pass(git_remote_new(&_remote, _repo, "git://github.com/libgit2/libgit2", "upstream"));
+	cl_git_pass(git_remote_set_fetchspec(_remote, "refs/heads/*:refs/remotes/upstream/*"));
+	cl_git_pass(git_remote_set_pushspec(_remote, "refs/heads/*:refs/heads/*"));
+	cl_git_pass(git_remote_save(_remote));
+	git_remote_free(_remote);
+	_remote = NULL;
+
+	/* Load it from config and make sure everything matches */
+	cl_git_pass(git_remote_load(&_remote, _repo, "upstream"));
+
+	_refspec = git_remote_fetchspec(_remote);
+	cl_assert(_refspec != NULL);
+	cl_assert(!strcmp(git_refspec_src(_refspec), "refs/heads/*"));
+	cl_assert(!strcmp(git_refspec_dst(_refspec), "refs/remotes/upstream/*"));
+
+	_refspec = git_remote_pushspec(_remote);
+	cl_assert(_refspec != NULL);
+	cl_assert(!strcmp(git_refspec_src(_refspec), "refs/heads/*"));
+	cl_assert(!strcmp(git_refspec_dst(_refspec), "refs/heads/*"));
+}
+
 void test_network_remotes__fnmatch(void)
 {
 	cl_git_pass(git_refspec_src_match(_refspec, "refs/heads/master"));