X-Git-Url: http://vcs.maemo.org/git/?a=blobdiff_plain;f=dev%2Fi386%2Flibcompress-raw-zlib-perl%2Flibcompress-raw-zlib-perl-2.012%2Fzlib-src%2Fcompress.c;fp=dev%2Fi386%2Flibcompress-raw-zlib-perl%2Flibcompress-raw-zlib-perl-2.012%2Fzlib-src%2Fcompress.c;h=30970afad395a2965d008191fd1c783ce09c5eb0;hb=8977e561d8a9eae6959218b0306c9df2056a38a9;hp=0000000000000000000000000000000000000000;hpb=df794b845212301ea0d267c919232538bfef356a;p=dh-make-perl

diff --git a/dev/i386/libcompress-raw-zlib-perl/libcompress-raw-zlib-perl-2.012/zlib-src/compress.c b/dev/i386/libcompress-raw-zlib-perl/libcompress-raw-zlib-perl-2.012/zlib-src/compress.c
new file mode 100644
index 0000000..30970af
--- /dev/null
+++ b/dev/i386/libcompress-raw-zlib-perl/libcompress-raw-zlib-perl-2.012/zlib-src/compress.c
@@ -0,0 +1,79 @@
+/* compress.c -- compress a memory buffer
+ * Copyright (C) 1995-2003 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#define ZLIB_INTERNAL
+#include "zlib.h"
+
+/* ===========================================================================
+     Compresses the source buffer into the destination buffer. The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer. Upon entry, destLen is the total size of the
+   destination buffer, which must be at least 0.1% larger than sourceLen plus
+   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+*/
+int ZEXPORT compress2 (
+    Bytef *dest,
+    uLongf *destLen,
+    const Bytef *source,
+    uLong sourceLen,
+    int level)
+{
+    z_stream stream;
+    int err;
+
+    stream.next_in = (Bytef*)source;
+    stream.avail_in = (uInt)sourceLen;
+#ifdef MAXSEG_64K
+    /* Check for source > 64K on 16-bit machine: */
+    if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
+#endif
+    stream.next_out = dest;
+    stream.avail_out = (uInt)*destLen;
+    if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
+
+    stream.zalloc = (alloc_func)0;
+    stream.zfree = (free_func)0;
+    stream.opaque = (voidpf)0;
+
+    err = deflateInit(&stream, level);
+    if (err != Z_OK) return err;
+
+    err = deflate(&stream, Z_FINISH);
+    if (err != Z_STREAM_END) {
+        deflateEnd(&stream);
+        return err == Z_OK ? Z_BUF_ERROR : err;
+    }
+    *destLen = stream.total_out;
+
+    err = deflateEnd(&stream);
+    return err;
+}
+
+/* ===========================================================================
+ */
+int ZEXPORT compress (
+    Bytef *dest,
+    uLongf *destLen,
+    const Bytef *source,
+    uLong sourceLen)
+{
+    return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
+}
+
+/* ===========================================================================
+     If the default memLevel or windowBits for deflateInit() is changed, then
+   this function needs to be updated.
+ */
+uLong ZEXPORT compressBound (
+    uLong sourceLen)
+{
+    return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + 11;
+}