Create public filter object and use it

This creates include/sys/filter.h with a basic definition of a
git_filter and then converts the internal code to use it.  There
are related internal objects (git_filter_list) that we will want
to publish at some point, but this is a first step.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/diff.c b/src/diff.c
index 77dbbd8bc..b1cde36bc 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -568,21 +568,21 @@ int git_diff__oid_for_file(
 		giterr_set(GITERR_OS, "File size overflow (for 32-bits) on '%s'", path);
 		result = -1;
 	} else {
-		git_vector filters = GIT_VECTOR_INIT;
+		git_filter_list *fl = NULL;
 
-		result = git_filters_load(&filters, repo, path, GIT_FILTER_TO_ODB);
-		if (result >= 0) {
+		result = git_filter_list_load(&fl, repo, path, GIT_FILTER_TO_ODB);
+		if (!result) {
 			int fd = git_futils_open_ro(full_path.ptr);
 			if (fd < 0)
 				result = fd;
 			else {
 				result = git_odb__hashfd_filtered(
-					oid, fd, (size_t)size, GIT_OBJ_BLOB, &filters);
+					oid, fd, (size_t)size, GIT_OBJ_BLOB, fl);
 				p_close(fd);
 			}
-		}
 
-		git_filters_free(&filters);
+			git_filter_list_free(fl);
+		}
 	}
 
 cleanup: