/* Allocate a new compressor */
CompressorState *AllocateCompressor(int compression, write_f* writeF)
{
CompressorState *cs;
CompressionAlgorithm alg;
int level;
ParseCompressionOption(compression, &alg, &level);
#ifndef HAVE_LIBZ
if (alg == COMPR_ALG_LIBZ)
die_horribly(NULL, modulename, "not built with zlib support\n");
#endif
cs = (CompressorState *) calloc(1, sizeof(CompressorState));
if (cs == NULL)
die_horribly(NULL, modulename, "out of memory\n");
cs->writeF = writeF;
cs->comprAlg = alg;
/*
* Perform compression algorithm specific initialization.
*/
#ifdef HAVE_LIBZ
if (alg == COMPR_ALG_LIBZ)
InitCompressorZlib(cs, level);
#endif
return cs;
}
/* Allocate a new compressor */
CompressorState *
AllocateCompressor(int compression, WriteFunc writeF)
{
CompressorState *cs;
CompressionAlgorithm alg;
int level;
ParseCompressionOption(compression, &alg, &level);
#ifndef HAVE_LIBZ
if (alg == COMPR_ALG_LIBZ)
exit_horribly(modulename, "not built with zlib support\n");
#endif
cs = (CompressorState *) pg_malloc0(sizeof(CompressorState));
cs->writeF = writeF;
cs->comprAlg = alg;
/*
* Perform compression algorithm specific initialization.
*/
#ifdef HAVE_LIBZ
if (alg == COMPR_ALG_LIBZ)
InitCompressorZlib(cs, level);
#endif
return cs;
}
/*
* Read all compressed data from the input stream (via readF) and print it
* out with ahwrite().
*/
void ReadDataFromArchive(ArchiveHandle * AH, int compression, read_f* readF)
{
CompressionAlgorithm alg;
ParseCompressionOption(compression, &alg, NULL);
if (alg == COMPR_ALG_NONE)
ReadDataFromArchiveNone(AH, readF);
if (alg == COMPR_ALG_LIBZ) {
#ifdef HAVE_LIBZ
ReadDataFromArchiveZlib(AH, readF);
#else
die_horribly(NULL, modulename, "not built with zlib support\n");
#endif
}
}
