codec, baseconv: Cleanup of the various binary encoding functions.

[mLib] / codec / null-codec.c

diff --git a/codec/null-codec.c b/codec/null-codec.c
new file mode 100644 (file)
index 0000000..1f5493e
--- /dev/null
+++ b/codec/null-codec.c
@@ -0,0 +1,67 @@
+/* -*-c-*-
+ *
+ * Null codec implementation
+ *
+ * (c) 2009 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of the mLib utilities library.
+ *
+ * mLib is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * mLib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with mLib; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <string.h>
+
+#include "codec.h"
+#include "sub.h"
+
+/*----- Data structures ---------------------------------------------------*/
+
+typedef struct null_codec {
+  codec c;
+} null_codec;
+
+/*----- Main code ---------------------------------------------------------*/
+
+static int encdec(codec *c, const void *p, size_t sz, dstr *d)
+  { DPUTM(d, p, sz); return (0); }
+
+static void destroy(codec *c)
+  { null_codec *nc = (null_codec *)c; DESTROY(nc); }
+
+static const codec_ops ops = { &null_codec_class, encdec, destroy };
+
+static codec *encoder(unsigned flags, const char *indent, unsigned maxlen)
+{
+  null_codec *nc = CREATE(null_codec);
+  nc->c.ops = &ops;
+  return (&nc->c);
+}
+
+static codec *decoder(unsigned flags)
+{
+  null_codec *nc = CREATE(null_codec);
+  nc->c.ops = &ops;
+  return (&nc->c);
+}
+
+const codec_class null_codec_class = { "null", encoder, decoder };
+
+/*----- That's all, folks -------------------------------------------------*/