[PATCH 01/44] repository: initialize the_repository in main()

[Nguyễn Thái Ngọc Duy]

This simplifies initialization of struct repository and anything
inside. Easier to read. Easier to add/remove fields.

Everything will go through main() common-main.c so this should cover all
programs, including t/helper.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
 common-main.c |  2 ++
 repository.c  | 18 +++++++++++++-----
 repository.h  |  2 +-
 3 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/common-main.c b/common-main.c
index 6a689007e7..7d716d5a54 100644
--- a/common-main.c
+++ b/common-main.c
@@ -34,6 +34,8 @@ int main(int argc, const char **argv)
 
        git_setup_gettext();
 
+       initialize_the_repository();
+
        attr_start();
 
        git_extract_argv0_path(argv[0]);
diff --git a/repository.c b/repository.c
index 4ffbe9bc94..0eddf28fcd 100644
--- a/repository.c
+++ b/repository.c
@@ -4,10 +4,16 @@
 #include "submodule-config.h"
 
 /* The main repository */
-static struct repository the_repo = {
-       NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &the_index, 
&hash_algos[GIT_HASH_SHA1], 0, 0
-};
-struct repository *the_repository = &the_repo;
+static struct repository the_repo;
+struct repository *the_repository;
+
+void initialize_the_repository(void)
+{
+       the_repository = &the_repo;
+
+       the_repo.index = &the_index;
+       repo_set_hash_algo(&the_repo, GIT_HASH_SHA1);
+}
 
 static char *git_path_from_env(const char *envvar, const char *git_dir,
                               const char *path, int fromenv)
@@ -128,7 +134,9 @@ static int read_and_verify_repository_format(struct 
repository_format *format,
  * Initialize 'repo' based on the provided 'gitdir'.
  * Return 0 upon success and a non-zero value upon failure.
  */
-int repo_init(struct repository *repo, const char *gitdir, const char 
*worktree)
+static int repo_init(struct repository *repo,
+                    const char *gitdir,
+                    const char *worktree)
 {
        struct repository_format format;
        memset(repo, 0, sizeof(*repo));
diff --git a/repository.h b/repository.h
index 0329e40c7f..40c1c81bdc 100644
--- a/repository.h
+++ b/repository.h
@@ -91,7 +91,7 @@ extern struct repository *the_repository;
 extern void repo_set_gitdir(struct repository *repo, const char *path);
 extern void repo_set_worktree(struct repository *repo, const char *path);
 extern void repo_set_hash_algo(struct repository *repo, int algo);
-extern int repo_init(struct repository *repo, const char *gitdir, const char 
*worktree);
+extern void initialize_the_repository(void);
 extern int repo_submodule_init(struct repository *submodule,
                               struct repository *superproject,
                               const char *path);
-- 
2.16.1.435.g8f24da2e1a