Add git_repository_config API

This function puts the global and repository configurations in one
git_config object and gives it to the user.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

include/git2/repository.h

@@ -265,6 +265,16 @@ GIT_EXTERN(const char *) git_repository_path(git_repository *repo, git_repositor
  */
 GIT_EXTERN(int) git_repository_is_bare(git_repository *repo);
 
+/**
+ * Retrieve the relevant configuration for a repository
+ *
+ * Puts together the configuration from the global and local files.
+ *
+ * @param out the repository's configuration
+ * @param repo the repository for which to get the config
+ */
+GIT_EXTERN(int) git_repository_config(git_config **out, git_repository *repo);
+
 /** @} */
 GIT_END_DECL
 #endif

src/config.h

@@ -6,6 +6,7 @@
 #include "vector.h"
 
 #define GIT_CONFIG_FILENAME ".gitconfig"
+#define GIT_CONFIG_FILENAME_INREPO "config"
 
 struct git_config {
 	git_vector files;

src/repository.c

@@ -32,7 +32,7 @@
 #include "tag.h"
 #include "blob.h"
 #include "fileops.h"
-
+#include "config.h"
 #include "refs.h"
 
 #define GIT_OBJECTS_INFO_DIR GIT_OBJECTS_DIR "info/"
@@ -271,6 +271,42 @@ cleanup:
 	return git__rethrow(error, "Failed to open repository");
 }
 
+int git_repository_config(git_config **out, git_repository *repo)
+{
+	git_config *cfg = NULL;
+	git_config_file *local = NULL;
+	char gitconfig[GIT_PATH_MAX];
+	int error = GIT_SUCCESS;
+
+	error = git_config_open_global(&cfg);
+	if (error < GIT_SUCCESS)
+		return git__rethrow(error, "Failed to open global config");
+
+	git__joinpath(gitconfig, repo->path_repository, GIT_CONFIG_FILENAME_INREPO);
+	error = git_config_file__ondisk(&local, gitconfig);
+	if (error < GIT_SUCCESS) {
+		error = git__rethrow(error, "Failed to open local config");
+		goto cleanup;
+	}
+
+	error = git_config_add_file(cfg, local, 2);
+	if (error < GIT_SUCCESS) {
+		error = git__rethrow(error, "Failed to add the local config");
+		goto cleanup;
+	}
+
+	*out = cfg;
+
+cleanup:
+	if (error < GIT_SUCCESS) {
+		git_config_free(cfg);
+		if (local)
+			local->free(local);
+	}
+
+	return error;
+}
+
 static int discover_repository_dirs(git_repository *repo, const char *path)
 {
 	int error;