[PATCH v4 15/20] repository: add index_state to struct repo

[Brandon Williams]

Signed-off-by: Brandon Williams <bmw...@google.com>
---
 repository.c | 16 ++++++++++++++++
 repository.h |  9 +++++++++
 2 files changed, 25 insertions(+)

diff --git a/repository.c b/repository.c
index 686a964ad..6f6f4d91e 100644
--- a/repository.c
+++ b/repository.c
@@ -163,4 +163,20 @@ void repo_clear(struct repository *repo)
                free(repo->config);
                repo->config = NULL;
        }
+
+       if (repo->index) {
+               discard_index(repo->index);
+               free(repo->index);
+               repo->index = NULL;
+       }
+}
+
+int repo_read_index(struct repository *repo)
+{
+       if (!repo->index)
+               repo->index = xcalloc(1, sizeof(*repo->index));
+       else
+               discard_index(repo->index);
+
+       return read_index_from(repo->index, repo->index_file);
 }
diff --git a/repository.h b/repository.h
index 8ae5e8653..3a41568aa 100644
--- a/repository.h
+++ b/repository.h
@@ -2,6 +2,7 @@
 #define REPOSITORY_H
 
 struct config_set;
+struct index_state;
 
 struct repository {
        /* Environment */
@@ -49,6 +50,12 @@ struct repository {
         */
        struct config_set *config;
 
+       /*
+        * Repository's in-memory index.
+        * 'repo_read_index()' can be used to populate 'index'.
+        */
+       struct index_state *index;
+
        /* Configurations */
        /*
         * Bit used during initialization to indicate if repository state (like
@@ -71,4 +78,6 @@ extern void repo_set_worktree(struct repository *repo, const 
char *path);
 extern int repo_init(struct repository *repo, const char *gitdir, const char 
*worktree);
 extern void repo_clear(struct repository *repo);
 
+extern int repo_read_index(struct repository *repo);
+
 #endif /* REPOSITORY_H */
-- 
2.13.1.704.gde00cce3c-goog