Add template dir and set gid to repo init

This extends git_repository_init_ext further with support for
initializing the repository from an external template directory
and with support for the "create shared" type flags that make a
set GID repository directory.

This also adds tests for much of the new functionality to the
existing `repo/init.c` test suite.

Also, this adds a bunch of new utility functions including a
very general purpose `git_futils_mkdir` (with the ability to
make paths and to chmod the paths post-creation) and a file
tree copying function `git_futils_cp_r`.  Also, this includes
some new path functions that were useful to keep the code
simple.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/config.c b/src/config.c
index 44cfe760c..3ca49714c 100644
--- a/src/config.c
+++ b/src/config.c
@@ -515,3 +515,28 @@ int git_config_open_global(git_config **out)
 	return error;
 }
 
+int git_config_open_outside_repo(git_config **out)
+{
+	int error;
+	git_config *cfg = NULL;
+	git_buf buf = GIT_BUF_INIT;
+
+	error = git_config_new(&cfg);
+
+	if (!error && !git_config_find_global_r(&buf))
+		error = git_config_add_file_ondisk(cfg, buf.ptr, 2);
+
+	if (!error && !git_config_find_system_r(&buf))
+		error = git_config_add_file_ondisk(cfg, buf.ptr, 1);
+
+	git_buf_free(&buf);
+
+	if (error && cfg) {
+		git_config_free(cfg);
+		cfg = NULL;
+	}
+
+	*out = cfg;
+
+	return error;
+}