diff -r e20de85af2ee -r ce057bb09d0b stdlibs/libz/zlib/uncompr.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/stdlibs/libz/zlib/uncompr.cpp Fri Jun 04 16:20:51 2010 +0100 @@ -0,0 +1,68 @@ +/* uncompr.cpp -- decompress a memory buffer + * Copyright (C) 1995-2003 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id: uncompr.cpp,v 1.1.2.1 2008/08/14 15:26:57 e0222316 Exp $ */ + +#define ZLIB_INTERNAL +#include "libzcore.h" + +/* =========================================================================== + Decompresses 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 large enough to hold the + entire uncompressed data. (The size of the uncompressed data must have + been saved previously by the compressor and transmitted to the decompressor + by some mechanism outside the scope of this compression library.) + Upon exit, destLen is the actual size of the compressed buffer. + This function can be used to decompress a whole file at once if the + input file is mmap'ed. + + uncompress 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, or Z_DATA_ERROR if the input data was corrupted. +*/ +#ifdef __SYMBIAN32__ +EXPORT_C int uncompress_r ( Bytef * dest,uLongf * destLen, const Bytef * source,uLong sourceLen) +#else +int ZEXPORT uncompress (dest, destLen, source, sourceLen) + Bytef *dest; + uLongf *destLen; + const Bytef *source; + uLong sourceLen; +#endif //__SYMBIAN32__ +{ + z_stream stream; + int err; + + stream.next_in = (Bytef*)source; + stream.avail_in = (uInt)sourceLen; + /* Check for source > 64K on 16-bit machine: */ + if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; + + 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; + + err = inflateInit_r(&stream); + if (err != Z_OK) return err; + + err = inflate_r(&stream, Z_FINISH); + if (err != Z_STREAM_END) { + inflateEnd_r(&stream); + if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0)) + return Z_DATA_ERROR; + return err; + } + *destLen = stream.total_out; + + err = inflateEnd_r(&stream); + return err; +} + + +