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#include "coding/gzip_compressor.hpp"
#include "coding/coder_util.hpp"
#include "base/assert.hpp"
#include "3party/zlib/zlib.h"
size_t DecompressGZipIntoFixedSize(char const * pSrc, size_t srcSize, char * pDst, size_t dstSize)
{
unsigned long dstUsed = dstSize;
int error = uncompress(reinterpret_cast<unsigned char *>(pDst), &dstUsed,
reinterpret_cast<unsigned char const *>(pSrc), srcSize);
switch (error)
{
case Z_OK:
return dstUsed;
case Z_BUF_ERROR:
return size_t(-1);
default:
MYTHROW(DecompressGZipException, (error, srcSize, dstSize, dstUsed));
}
}
void DecompressGZip(char const * pSrc, size_t srcSize, string & dst)
{
FixedDstSizeCodeToString(&DecompressGZipIntoFixedSize, pSrc, srcSize, dst);
}
void CompressGZip(int level, char const * pSrc, size_t srcSize, string & dst)
{
ASSERT(level >= 1 && level <= 9, (level));
dst.resize(compressBound(srcSize));
unsigned long dstUsed = dst.size();
int error = compress2(reinterpret_cast<unsigned char *>(&dst[0]), &dstUsed,
reinterpret_cast<unsigned char const *>(pSrc), srcSize, level);
if (error == Z_OK)
dst.resize(dstUsed);
else
MYTHROW(CompressGZipException, (error, srcSize, dst.size(), dstUsed));
}
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