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zlib 1.0.8

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This commit is contained in:
Mark Adler
2011-09-09 23:18:57 -07:00
parent 7850e4e406
commit 6759211ad8
27 changed files with 482 additions and 144 deletions
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35
compress.c
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@@ -8,22 +8,22 @@
#include "zlib.h"
/* ===========================================================================
Compresses the source buffer into the destination buffer. 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 8 bytes. Upon exit, destLen is the actual size of the
compressed buffer.
This function can be used to compress a whole file at once if the
input file is mmap'ed.
compress 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.
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 EXPORT compress (dest, destLen, source, sourceLen)
int EXPORT compress2 (dest, destLen, source, sourceLen, level)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
int level;
{
z_stream stream;
int err;
@@ -42,7 +42,7 @@ int EXPORT compress (dest, destLen, source, sourceLen)
stream.zfree = (free_func)0;
stream.opaque = (voidpf)0;
err = deflateInit(&stream, Z_DEFAULT_COMPRESSION);
err = deflateInit(&stream, level);
if (err != Z_OK) return err;
err = deflate(&stream, Z_FINISH);
@@ -55,3 +55,14 @@ int EXPORT compress (dest, destLen, source, sourceLen)
err = deflateEnd(&stream);
return err;
}
/* ===========================================================================
*/
int EXPORT compress (dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
{
return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
}