func NewWriter(w io.Writer, preset Preset) (*Compressor, error) {
enc := new(Compressor)
// The zero lzma_stream is the same thing as LZMA_STREAM_INIT.
enc.writer = w
enc.buffer = make([]byte, DefaultBufsize)
enc.handle = allocLzmaStream(enc.handle)
// Initialize encoder
ret := C.lzma_easy_encoder(enc.handle, C.uint32_t(preset), C.lzma_check(CheckCRC64))
if Errno(ret) != Ok {
return nil, Errno(ret)
}
return enc, nil
}
// Initializes a XZ encoder with additional settings.
func NewWriterCustom(w io.Writer, preset Preset, check Checksum, bufsize int) (*Compressor, error) {
enc := new(Compressor)
// The zero lzma_stream is the same thing as LZMA_STREAM_INIT.
enc.writer = w
enc.buffer = make([]byte, bufsize)
// Initialize encoder
ret := C.lzma_easy_encoder(&enc.handle, C.uint32_t(preset), C.lzma_check(check))
if Errno(ret) != Ok {
return nil, Errno(ret)
}
return enc, nil
}