Const correctness!

6 files changed, 15 insertions, 12 deletions

diff --git a/include/git2/blob.h b/include/git2/blob.h
index ac4d84392..1b6583309 100644
--- a/include/git2/blob.h
+++ b/include/git2/blob.h
@@ -216,7 +216,7 @@ GIT_EXTERN(int) git_blob_create_frombuffer(
  * @return 1 if the content of the blob is detected
  * as binary; 0 otherwise.
  */
-GIT_EXTERN(int) git_blob_is_binary(git_blob *blob);
+GIT_EXTERN(int) git_blob_is_binary(const git_blob *blob);
 
 /** @} */
 GIT_END_DECL
diff --git a/include/git2/branch.h b/include/git2/branch.h
index d2762019b..ad2a70b1f 100644
--- a/include/git2/branch.h
+++ b/include/git2/branch.h
@@ -179,8 +179,9 @@ GIT_EXTERN(int) git_branch_lookup(
  * @return 0 on success; otherwise an error code (e.g., if the
  *  ref is no local or remote branch).
  */
-GIT_EXTERN(int) git_branch_name(const char **out,
-		git_reference *ref);
+GIT_EXTERN(int) git_branch_name(
+		const char **out,
+		const git_reference *ref);
 
 /**
  * Return the reference supporting the remote tracking branch,
@@ -196,7 +197,7 @@ GIT_EXTERN(int) git_branch_name(const char **out,
  */
 GIT_EXTERN(int) git_branch_upstream(
 	git_reference **out,
-	git_reference *branch);
+	const git_reference *branch);
 
 /**
  * Set the upstream configuration for a given local branch
diff --git a/include/git2/index.h b/include/git2/index.h
index 9a7ad28a6..dd6a28e40 100644
--- a/include/git2/index.h
+++ b/include/git2/index.h
@@ -255,7 +255,7 @@ GIT_EXTERN(int) git_index_write(git_index *index);
  * @param index an existing index object
  * @return path to index file or NULL for in-memory index
  */
-GIT_EXTERN(const char *) git_index_path(git_index *index);
+GIT_EXTERN(const char *) git_index_path(const git_index *index);
 
 /**
  * Read a tree into the index file with stats
diff --git a/include/git2/merge.h b/include/git2/merge.h
index 769df5a8d..6d97e81e6 100644
--- a/include/git2/merge.h
+++ b/include/git2/merge.h
@@ -341,7 +341,7 @@ GIT_EXTERN(int) git_merge_base_octopus(
 GIT_EXTERN(int) git_merge_head_from_ref(
 	git_merge_head **out,
 	git_repository *repo,
-	git_reference *ref);
+	const git_reference *ref);
 
 /**
  * Creates a `git_merge_head` from the given fetch head data.  The resulting
diff --git a/include/git2/push.h b/include/git2/push.h
index 899d21e7f..7a8bec12c 100644
--- a/include/git2/push.h
+++ b/include/git2/push.h
@@ -148,7 +148,7 @@ GIT_EXTERN(int) git_push_finish(git_push *push);
  *
  * @return true if remote side successfully unpacked, false otherwise
  */
-GIT_EXTERN(int) git_push_unpack_ok(git_push *push);
+GIT_EXTERN(int) git_push_unpack_ok(const git_push *push);
 
 /**
  * Invoke callback `cb' on each status entry
diff --git a/include/git2/refs.h b/include/git2/refs.h
index 1bbb4ca46..6a1db65a8 100644
--- a/include/git2/refs.h
+++ b/include/git2/refs.h
@@ -487,7 +487,9 @@ GIT_EXTERN(void) git_reference_free(git_reference *ref);
  * @param ref2 The second git_reference
  * @return 0 if the same, else a stable but meaningless ordering.
  */
-GIT_EXTERN(int) git_reference_cmp(git_reference *ref1, git_reference *ref2);
+GIT_EXTERN(int) git_reference_cmp(
+	const git_reference *ref1,
+	const git_reference *ref2);
 
 /**
  * Create an iterator for the repo's references
@@ -596,7 +598,7 @@ GIT_EXTERN(int) git_reference_is_branch(const git_reference *ref);
  * @return 1 when the reference lives in the refs/remotes
  * namespace; 0 otherwise.
  */
-GIT_EXTERN(int) git_reference_is_remote(git_reference *ref);
+GIT_EXTERN(int) git_reference_is_remote(const git_reference *ref);
 
 /**
  * Check if a reference is a tag
@@ -606,7 +608,7 @@ GIT_EXTERN(int) git_reference_is_remote(git_reference *ref);
  * @return 1 when the reference lives in the refs/tags
  * namespace; 0 otherwise.
  */
-GIT_EXTERN(int) git_reference_is_tag(git_reference *ref);
+GIT_EXTERN(int) git_reference_is_tag(const git_reference *ref);
 
 /**
  * Check if a reference is a note
@@ -616,7 +618,7 @@ GIT_EXTERN(int) git_reference_is_tag(git_reference *ref);
  * @return 1 when the reference lives in the refs/notes
  * namespace; 0 otherwise.
  */
-GIT_EXTERN(int) git_reference_is_note(git_reference *ref);
+GIT_EXTERN(int) git_reference_is_note(const git_reference *ref);
 
 typedef enum {
 	GIT_REF_FORMAT_NORMAL = 0u,
@@ -720,7 +722,7 @@ GIT_EXTERN(int) git_reference_is_valid_name(const char *refname);
  * @param ref a reference
  * @return the human-readable version of the name
  */
-GIT_EXTERN(const char *) git_reference_shorthand(git_reference *ref);
+GIT_EXTERN(const char *) git_reference_shorthand(const git_reference *ref);
 
 
 /** @} */