1 files changed, 78 insertions, 0 deletions
diff --git a/package/cfgfs/src/compress.c b/package/cfgfs/src/compress.c
new file mode 100644
index 000000000..b75959c4e
--- /dev/null
+++ b/package/cfgfs/src/compress.c
@@ -0,0 +1,78 @@
+/* $MirOS: contrib/hosted/fwcf/compress.c,v 1.7 2006/09/23 23:46:35 tg Exp $ */
+
+/*-
+ * Copyright (c) 2006
+ *	Thorsten Glaser <tg@mirbsd.de>
+ *
+ * Licensee is hereby permitted to deal in this work without restric-
+ * tion, including unlimited rights to use, publicly perform, modify,
+ * merge, distribute, sell, give away or sublicence, provided all co-
+ * pyright notices above, these terms and the disclaimer are retained
+ * in all redistributions or reproduced in accompanying documentation
+ * or other materials provided with binary redistributions.
+ *
+ * Licensor offers the work "AS IS" and WITHOUT WARRANTY of any kind,
+ * express, or implied, to the maximum extent permitted by applicable
+ * law, without malicious intent or gross negligence; in no event may
+ * licensor, an author or contributor be held liable for any indirect
+ * or other damage, or direct damage except proven a consequence of a
+ * direct error of said person and intended use of this work, loss or
+ * other issues arising in any way out of its use, even if advised of
+ * the possibility of such damage or existence of a defect.
+ */
+
+#include <sys/param.h>
+#include <err.h>
+#include <stdlib.h>
+
+#include "defs.h"
+#include "compress.h"
+
+__RCSID("$MirOS: contrib/hosted/fwcf/compress.c,v 1.7 2006/09/23 23:46:35 tg Exp $");
+
+static void compress_initialise(void);
+
+static fwcf_compressor *fwcf_compressors = NULL;
+
+int
+compress_register(fwcf_compressor *e)
+{
+	compress_initialise();
+	if (e == NULL)
+		return (1);
+
+	if ((e->init == NULL) || (e->compress == NULL) ||
+	    (e->decompress == NULL) || (e->name == NULL))
+		return (1);
+	if (fwcf_compressors[e->code].name != NULL)
+		return (2);
+
+	fwcf_compressors[e->code] = *e;
+	return (0);
+}
+
+fwcf_compressor *
+compress_enumerate(void)
+{
+	int i;
+	fwcf_compressor *rv = NULL;
+
+	compress_initialise();
+	for (i = 0; i < 256; ++i)
+		if (fwcf_compressors[i].name != NULL) {
+			if (fwcf_compressors[i].code == i)
+				rv = fwcf_compressors;
+			else
+				errx(1, "fwcf compressor registry invalid");
+		}
+	return (rv);
+}
+
+static void
+compress_initialise(void)
+{
+	if (fwcf_compressors != NULL)
+		return;
+	if ((fwcf_compressors = calloc(256, sizeof (fwcf_compressor))) == NULL)
+		err(1, "calloc");
+}