1 files changed, 47 insertions, 0 deletions
diff --git a/ext/digest/sha2/sha2init.c b/ext/digest/sha2/sha2init.c
new file mode 100644
index 0000000000..d7666aadf9
--- /dev/null
+++ b/ext/digest/sha2/sha2init.c
@@ -0,0 +1,47 @@
+/* $RoughId: sha2init.c,v 1.3 2001/07/13 20:00:43 knu Exp $ */
+/* $Id$ */
+
+#include "digest.h"
+#include "sha2.h"
+
+#define FOREACH_BITLEN(func)	func(256) func(384) func(512)
+
+#define DEFINE_ALGO_METADATA(bitlen) \
+static algo_t sha##bitlen = { \
+    SHA##bitlen##_DIGEST_LENGTH, \
+    sizeof(SHA##bitlen##_CTX), \
+    (hash_init_func_t)SHA##bitlen##_Init, \
+    (hash_update_func_t)SHA##bitlen##_Update, \
+    (hash_end_func_t)SHA##bitlen##_End, \
+    (hash_final_func_t)SHA##bitlen##_Final, \
+    (hash_equal_func_t)SHA##bitlen##_Equal, \
+};
+
+FOREACH_BITLEN(DEFINE_ALGO_METADATA)
+
+void
+Init_sha2()
+{
+    VALUE mDigest, cDigest_Base;
+    ID id_metadata;
+
+#define DECLARE_ALGO_CLASS(bitlen) \
+    VALUE cDigest_SHA##bitlen;
+
+    FOREACH_BITLEN(DECLARE_ALGO_CLASS)
+
+    rb_require("digest.so");
+
+    id_metadata = rb_intern("metadata");
+
+    mDigest = rb_path2class("Digest");
+    cDigest_Base = rb_path2class("Digest::Base");
+
+#define DEFINE_ALGO_CLASS(bitlen) \
+    cDigest_SHA##bitlen = rb_define_class_under(mDigest, "SHA" #bitlen, cDigest_Base); \
+\
+    rb_cvar_declare(cDigest_SHA##bitlen, id_metadata, \
+		    Data_Wrap_Struct(rb_cObject, 0, 0, &sha##bitlen));
+
+    FOREACH_BITLEN(DEFINE_ALGO_CLASS)
+}