Add a remotes API

Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>

4 files changed, 280 insertions, 0 deletions

diff --git a/src/refspec.c b/src/refspec.c
new file mode 100644
index 000000000..7a85259f3
--- /dev/null
+++ b/src/refspec.c
@@ -0,0 +1,66 @@
+/*
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2,
+ * as published by the Free Software Foundation.
+ *
+ * In addition to the permissions in the GNU General Public License,
+ * the authors give you unlimited permission to link the compiled
+ * version of this file into combinations with other programs,
+ * and to distribute those combinations without any restriction
+ * coming from the use of this file.  (The General Public License
+ * restrictions do apply in other respects; for example, they cover
+ * modification of the file, and distribution when not linked into
+ * a combined executable.)
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "common.h"
+#include "refspec.h"
+
+int git_refspec_parse(git_refspec *refspec, const char *str)
+{
+	char *delim;
+
+	memset(refspec, 0x0, sizeof(git_refspec));
+
+	if (*str == '+') {
+		refspec->force = 1;
+		str++;
+	}
+
+	delim = strchr(str, ':');
+	if (delim == NULL)
+		return git__throw(GIT_EOBJCORRUPTED, "Failed to parse refspec. No ':'");
+
+	refspec->src = git__strndup(str, delim - str);
+	if (refspec->src == NULL)
+		return GIT_ENOMEM;
+
+	refspec->dst = git__strdup(delim + 1);
+	if (refspec->dst == NULL) {
+		free(refspec->src);
+		refspec->src = NULL;
+		return GIT_ENOMEM;
+	}
+
+	return GIT_SUCCESS;
+}
+
+const char *git_refspec_src(const git_refspec *refspec)
+{
+	return refspec->src;
+}
+
+const char *git_refspec_dst(const git_refspec *refspec)
+{
+	return refspec->dst;
+}
diff --git a/src/refspec.h b/src/refspec.h
new file mode 100644
index 000000000..230135a4a
--- /dev/null
+++ b/src/refspec.h
@@ -0,0 +1,14 @@
+#ifndef INCLUDE_refspec_h__
+#define INCLUDE_refspec_h__
+
+#include "git2/refspec.h"
+
+struct git_refspec {
+	int force;
+	char *src;
+	char *dst;
+};
+
+int git_refspec_parse(struct git_refspec *refspec, const char *str);
+
+#endif
diff --git a/src/remote.c b/src/remote.c
new file mode 100644
index 000000000..7da6e653e
--- /dev/null
+++ b/src/remote.c
@@ -0,0 +1,186 @@
+/*
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2,
+ * as published by the Free Software Foundation.
+ *
+ * In addition to the permissions in the GNU General Public License,
+ * the authors give you unlimited permission to link the compiled
+ * version of this file into combinations with other programs,
+ * and to distribute those combinations without any restriction
+ * coming from the use of this file.  (The General Public License
+ * restrictions do apply in other respects; for example, they cover
+ * modification of the file, and distribution when not linked into
+ * a combined executable.)
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "git2/remote.h"
+#include "git2/config.h"
+#include "git2/types.h"
+
+#include "config.h"
+#include "repository.h"
+#include "remote.h"
+
+static int refspec_parse(git_refspec *refspec, const char *str)
+{
+	char *delim;
+
+	memset(refspec, 0x0, sizeof(git_refspec));
+
+	if (*str == '+') {
+		refspec->force = 1;
+		str++;
+	}
+
+	delim = strchr(str, ':');
+	if (delim == NULL)
+		return git__throw(GIT_EOBJCORRUPTED, "Failed to parse refspec. No ':'");
+
+	refspec->src = git__strndup(str, delim - str);
+	if (refspec->src == NULL)
+		return GIT_ENOMEM;
+
+	refspec->dst = git__strdup(delim + 1);
+	if (refspec->dst == NULL) {
+		free(refspec->src);
+		refspec->src = NULL;
+		return GIT_ENOMEM;
+	}
+
+	return GIT_SUCCESS;
+}
+
+static int parse_remote_refspec(git_config *cfg, git_refspec *refspec, const char *var)
+{
+	const char *val;
+	int error;
+
+	error = git_config_get_string(cfg, var, &val);
+	if (error < GIT_SUCCESS)
+		return error;
+
+	return git_refspec_parse(refspec, val);
+}
+
+int git_remote_get(git_remote **out, git_config *cfg, const char *name)
+{
+	git_remote *remote;
+	char *buf = NULL;
+	const char *val;
+	int ret, error, buf_len;
+
+	remote = git__malloc(sizeof(git_remote));
+	if (remote == NULL)
+		return GIT_ENOMEM;
+
+	memset(remote, 0x0, sizeof(git_remote));
+	remote->name = git__strdup(name);
+	if (remote->name == NULL) {
+		error = GIT_ENOMEM;
+		goto cleanup;
+	}
+
+	/* "fetch" is the longest var name we're interested in */
+	buf_len = STRLEN("remote.") + STRLEN(".fetch") + strlen(name) + 1;
+	buf = git__malloc(buf_len);
+	if (buf == NULL) {
+		error = GIT_ENOMEM;
+		goto cleanup;
+	}
+
+	ret = snprintf(buf, buf_len, "%s.%s.%s", "remote", name, "url");
+	if (ret < 0) {
+		error = git__throw(GIT_EOSERR, "Failed to build config var name");
+		goto cleanup;
+	}
+
+	error = git_config_get_string(cfg, buf, &val);
+	if (error < GIT_SUCCESS) {
+		error = git__rethrow(error,  "Remote's url doesn't exist");
+		goto cleanup;
+	}
+
+	remote->url = git__strdup(val);
+	if (remote->url == NULL) {
+		error = GIT_ENOMEM;
+		goto cleanup;
+	}
+
+	ret = snprintf(buf, buf_len, "%s.%s.%s", "remote", name, "fetch");
+	if (ret < 0) {
+		error = git__throw(GIT_EOSERR, "Failed to build config var name");
+		goto cleanup;
+	}
+
+	error = git_config_get_string(cfg, buf, &val);
+	if (error < GIT_SUCCESS)
+		goto cleanup;
+
+	error = refspec_parse(&remote->fetch, val);
+	if (error < GIT_SUCCESS)
+		goto cleanup;
+
+	ret = snprintf(buf, buf_len, "%s.%s.%s", "remote", name, "push");
+	if (ret < 0) {
+		error = git__throw(GIT_EOSERR, "Failed to build config var name");
+		goto cleanup;
+	}
+
+	error = git_config_get_string(cfg, buf, &val);
+	if (error < GIT_SUCCESS)
+		goto cleanup;
+
+	error = refspec_parse(&remote->push, val);
+	if (error < GIT_SUCCESS)
+		goto cleanup;
+
+	*out = remote;
+
+cleanup:
+	free(buf);
+	if (error < GIT_SUCCESS)
+		git_remote_free(remote);
+
+	return error;
+}
+
+const char *git_remote_name(struct git_remote *remote)
+{
+	return remote->name;
+}
+
+const char *git_remote_url(struct git_remote *remote)
+{
+	return remote->url;
+}
+
+const git_refspec *git_remote_fetchspec(struct git_remote *remote)
+{
+	return &remote->fetch;
+}
+
+const git_refspec *git_remote_pushspec(struct git_remote *remote)
+{
+	return &remote->push;
+}
+
+void git_remote_free(git_remote *remote)
+{
+	free(remote->fetch.src);
+	free(remote->fetch.dst);
+	free(remote->push.src);
+	free(remote->push.dst);
+	free(remote->url);
+	free(remote->name);
+	free(remote);
+}
diff --git a/src/remote.h b/src/remote.h
new file mode 100644
index 000000000..afd2d1bb9
--- /dev/null
+++ b/src/remote.h
@@ -0,0 +1,14 @@
+#ifndef INCLUDE_remote_h__
+#define INCLUDE_remote_h__
+
+#include "remote.h"
+#include "refspec.h"
+
+struct git_remote {
+	char *name;
+	char *url;
+	struct git_refspec fetch;
+	struct git_refspec push;
+};
+
+#endif