[PATCH 13/31] repo: add repo_read_gitmodules

[Brandon Williams]

Teach the repo object to be able to populate the submodule_cache by
reading the repository's gitmodules file.

Signed-off-by: Brandon Williams <bmw...@google.com>
---
 repo.c | 14 ++++++++++++++
 repo.h |  1 +
 2 files changed, 15 insertions(+)

diff --git a/repo.c b/repo.c
index 13b7d244f..6f7b2015f 100644
--- a/repo.c
+++ b/repo.c
@@ -116,6 +116,20 @@ void repo_read_index(struct repo *repo)
                die(_("failure reading index"));
 }
 
+static int gitmodules_cb(const char *var, const char *value, void *data)
+{
+       struct repo *repo = data;
+       return submodule_config_option(repo, var, value);
+}
+
+void repo_read_gitmodules(struct repo *repo)
+{
+       char *gitmodules_path = xstrfmt("%s/.gitmodules", repo->worktree);
+
+       git_config_from_file(gitmodules_cb, gitmodules_path, repo);
+       free(gitmodules_path);
+}
+
 int repo_init(struct repo *repo, const char *gitdir)
 {
        int error = 0;
diff --git a/repo.h b/repo.h
index ebce2a408..ad0184eaa 100644
--- a/repo.h
+++ b/repo.h
@@ -37,6 +37,7 @@ extern void repo_set_gitdir(struct repo *repo, const char 
*path);
 extern void repo_set_worktree(struct repo *repo, const char *path);
 extern void repo_read_config(struct repo *repo);
 extern void repo_read_index(struct repo *repo);
+extern void repo_read_gitmodules(struct repo *repo);
 extern int repo_init(struct repo *repo, const char *path);
 extern void repo_clear(struct repo *repo);
 
-- 
2.13.0.506.g27d5fe0cd-goog