1 files changed, 47 insertions, 0 deletions
diff --git a/patch-ids.h b/patch-ids.h
new file mode 100644
index 0000000..490d739
--- /dev/null
+++ b/patch-ids.h
@@ -0,0 +1,47 @@
+#ifndef PATCH_IDS_H
+#define PATCH_IDS_H
+
+#include "diff.h"
+#include "hashmap.h"
+
+struct commit;
+struct object_id;
+struct repository;
+
+struct patch_id {
+	struct hashmap_entry ent;
+	struct object_id patch_id;
+	struct commit *commit;
+};
+
+struct patch_ids {
+	struct hashmap patches;
+	struct diff_options diffopts;
+};
+
+int commit_patch_id(struct commit *commit, struct diff_options *options,
+		    struct object_id *oid, int);
+int init_patch_ids(struct repository *, struct patch_ids *);
+int free_patch_ids(struct patch_ids *);
+
+/* Add a patch_id for a single commit to the set. */
+struct patch_id *add_commit_patch_id(struct commit *, struct patch_ids *);
+
+/* Returns true if the patch-id of "commit" is present in the set. */
+int has_commit_patch_id(struct commit *commit, struct patch_ids *);
+
+/*
+ * Iterate over all commits in the set whose patch id matches that of
+ * "commit", like:
+ *
+ *   struct patch_id *cur;
+ *   for (cur = patch_id_iter_first(commit, ids);
+ *        cur;
+ *        cur = patch_id_iter_next(cur, ids) {
+ *           ... look at cur->commit
+ *   }
+ */
+struct patch_id *patch_id_iter_first(struct commit *commit, struct patch_ids *);
+struct patch_id *patch_id_iter_next(struct patch_id *cur, struct patch_ids *);
+
+#endif /* PATCH_IDS_H */