zlib abstraction code, first part of support for compression

1 files changed, 44 insertions, 0 deletions

diff --git a/usr.bin/cvs/zlib.h b/usr.bin/cvs/zlib.h
new file mode 100644
index 00000000000..b255aad8401
--- /dev/null
+++ b/usr.bin/cvs/zlib.h
@@ -0,0 +1,44 @@
+/*	$OpenBSD: zlib.h,v 1.1 2005/01/13 18:59:03 jfb Exp $	*/
+/*
+ * Copyright (c) 2005 Jean-Francois Brousseau <jfb@openbsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CVSZLIB_H
+#define CVSZLIB_H
+
+#include <sys/param.h>
+
+#include <zlib.h>
+
+#include "buf.h"
+
+typedef struct cvs_zlib_ctx CVSZCTX;
+
+
+CVSZCTX* cvs_zlib_newctx  (int);
+void     cvs_zlib_free    (CVSZCTX *);
+int      cvs_zlib_deflate (CVSZCTX *, BUF *, u_char *, size_t);
+int      cvs_zlib_inflate (CVSZCTX *, BUF *, u_char *, size_t);
+
+#endif /* CVSZLIB_H */