Fix Brotli decompression in 'nix log'
This didn't work anymore since decompression was only done in the
non-coroutine case.
Decompressors are now sinks, just like compressors.
Also fixed a bug in bzip2 API handling (we have to handle BZ_RUN_OK
rather than BZ_OK), which we didn't notice because there was a missing
'throw':
if (ret != BZ_OK)
CompressionError("error while compressing bzip2 file");
This commit is contained in:
Eelco Dolstra
parent
fa4def3d46
commit
d3761f5f8b
7 changed files with 339 additions and 411 deletions
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@ -17,197 +17,24 @@ namespace nix {
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static const size_t bufSize = 32 * 1024;
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static void decompressNone(Source & source, Sink & sink)
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// Don't feed brotli too much at once.
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struct ChunkedCompressionSink : CompressionSink
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{
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std::vector<unsigned char> buf(bufSize);
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while (true) {
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size_t n;
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try {
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n = source.read(buf.data(), buf.size());
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} catch (EndOfFile &) {
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break;
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uint8_t outbuf[BUFSIZ];
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void write(const unsigned char * data, size_t len) override
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{
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const size_t CHUNK_SIZE = sizeof(outbuf) << 2;
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while (len) {
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size_t n = std::min(CHUNK_SIZE, len);
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writeInternal(data, n);
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data += n;
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len -= n;
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}
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sink(buf.data(), n);
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}
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}
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static void decompressXZ(Source & source, Sink & sink)
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{
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lzma_stream strm(LZMA_STREAM_INIT);
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lzma_ret ret = lzma_stream_decoder(
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&strm, UINT64_MAX, LZMA_CONCATENATED);
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if (ret != LZMA_OK)
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throw CompressionError("unable to initialise lzma decoder");
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Finally free([&]() { lzma_end(&strm); });
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lzma_action action = LZMA_RUN;
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std::vector<uint8_t> inbuf(bufSize), outbuf(bufSize);
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strm.next_in = nullptr;
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strm.avail_in = 0;
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strm.next_out = outbuf.data();
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strm.avail_out = outbuf.size();
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bool eof = false;
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while (true) {
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checkInterrupt();
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if (strm.avail_in == 0 && !eof) {
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strm.next_in = inbuf.data();
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try {
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strm.avail_in = source.read((unsigned char *) strm.next_in, inbuf.size());
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} catch (EndOfFile &) {
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eof = true;
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}
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}
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if (strm.avail_in == 0)
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action = LZMA_FINISH;
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lzma_ret ret = lzma_code(&strm, action);
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if (strm.avail_out < outbuf.size()) {
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sink((unsigned char *) outbuf.data(), outbuf.size() - strm.avail_out);
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strm.next_out = outbuf.data();
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strm.avail_out = outbuf.size();
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}
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if (ret == LZMA_STREAM_END) return;
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if (ret != LZMA_OK)
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throw CompressionError("error %d while decompressing xz file", ret);
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}
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}
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static void decompressBzip2(Source & source, Sink & sink)
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{
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bz_stream strm;
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memset(&strm, 0, sizeof(strm));
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int ret = BZ2_bzDecompressInit(&strm, 0, 0);
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if (ret != BZ_OK)
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throw CompressionError("unable to initialise bzip2 decoder");
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Finally free([&]() { BZ2_bzDecompressEnd(&strm); });
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std::vector<char> inbuf(bufSize), outbuf(bufSize);
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strm.next_in = nullptr;
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strm.avail_in = 0;
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strm.next_out = outbuf.data();
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strm.avail_out = outbuf.size();
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bool eof = false;
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while (true) {
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checkInterrupt();
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if (strm.avail_in == 0 && !eof) {
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strm.next_in = inbuf.data();
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try {
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strm.avail_in = source.read((unsigned char *) strm.next_in, inbuf.size());
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} catch (EndOfFile &) {
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eof = true;
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}
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}
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int ret = BZ2_bzDecompress(&strm);
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if (strm.avail_in == 0 && strm.avail_out == outbuf.size() && eof)
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throw CompressionError("bzip2 data ends prematurely");
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if (strm.avail_out < outbuf.size()) {
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sink((unsigned char *) outbuf.data(), outbuf.size() - strm.avail_out);
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strm.next_out = outbuf.data();
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strm.avail_out = outbuf.size();
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}
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if (ret == BZ_STREAM_END) return;
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if (ret != BZ_OK)
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throw CompressionError("error while decompressing bzip2 file");
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}
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}
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static void decompressBrotli(Source & source, Sink & sink)
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{
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auto *s = BrotliDecoderCreateInstance(nullptr, nullptr, nullptr);
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if (!s)
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throw CompressionError("unable to initialize brotli decoder");
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Finally free([s]() { BrotliDecoderDestroyInstance(s); });
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std::vector<uint8_t> inbuf(bufSize), outbuf(bufSize);
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const uint8_t * next_in = nullptr;
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size_t avail_in = 0;
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bool eof = false;
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while (true) {
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checkInterrupt();
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if (avail_in == 0 && !eof) {
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next_in = inbuf.data();
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try {
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avail_in = source.read((unsigned char *) next_in, inbuf.size());
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} catch (EndOfFile &) {
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eof = true;
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}
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}
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uint8_t * next_out = outbuf.data();
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size_t avail_out = outbuf.size();
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auto ret = BrotliDecoderDecompressStream(s,
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&avail_in, &next_in,
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&avail_out, &next_out,
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nullptr);
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switch (ret) {
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case BROTLI_DECODER_RESULT_ERROR:
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throw CompressionError("error while decompressing brotli file");
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case BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT:
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if (eof)
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throw CompressionError("incomplete or corrupt brotli file");
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break;
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case BROTLI_DECODER_RESULT_SUCCESS:
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if (avail_in != 0)
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throw CompressionError("unexpected input after brotli decompression");
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break;
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case BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT:
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// I'm not sure if this can happen, but abort if this happens with empty buffer
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if (avail_out == outbuf.size())
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throw CompressionError("brotli decompression requires larger buffer");
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break;
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}
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// Always ensure we have full buffer for next invocation
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if (avail_out < outbuf.size())
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sink((unsigned char *) outbuf.data(), outbuf.size() - avail_out);
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if (ret == BROTLI_DECODER_RESULT_SUCCESS) return;
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}
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}
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ref<std::string> decompress(const std::string & method, const std::string & in)
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{
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StringSource source(in);
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StringSink sink;
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decompress(method, source, sink);
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return sink.s;
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}
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void decompress(const std::string & method, Source & source, Sink & sink)
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{
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if (method == "none")
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return decompressNone(source, sink);
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else if (method == "xz")
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return decompressXZ(source, sink);
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else if (method == "bzip2")
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return decompressBzip2(source, sink);
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else if (method == "br")
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return decompressBrotli(source, sink);
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else
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throw UnknownCompressionMethod("unknown compression method '%s'", method);
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}
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virtual void writeInternal(const unsigned char * data, size_t len) = 0;
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};
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struct NoneSink : CompressionSink
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{
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@ -217,28 +44,25 @@ struct NoneSink : CompressionSink
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void write(const unsigned char * data, size_t len) override { nextSink(data, len); }
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};
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struct XzSink : CompressionSink
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struct XzDecompressionSink : CompressionSink
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{
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Sink & nextSink;
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uint8_t outbuf[BUFSIZ];
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lzma_stream strm = LZMA_STREAM_INIT;
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bool finished = false;
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template <typename F>
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XzSink(Sink & nextSink, F&& initEncoder) : nextSink(nextSink) {
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lzma_ret ret = initEncoder();
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XzDecompressionSink(Sink & nextSink) : nextSink(nextSink)
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{
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lzma_ret ret = lzma_stream_decoder(
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&strm, UINT64_MAX, LZMA_CONCATENATED);
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if (ret != LZMA_OK)
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throw CompressionError("unable to initialise lzma encoder");
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// FIXME: apply the x86 BCJ filter?
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throw CompressionError("unable to initialise lzma decoder");
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strm.next_out = outbuf;
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strm.avail_out = sizeof(outbuf);
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}
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XzSink(Sink & nextSink) : XzSink(nextSink, [this]() {
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return lzma_easy_encoder(&strm, 6, LZMA_CHECK_CRC64);
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}) {}
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~XzSink()
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~XzDecompressionSink()
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{
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lzma_end(&strm);
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}
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@ -246,43 +70,25 @@ struct XzSink : CompressionSink
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void finish() override
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{
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CompressionSink::flush();
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assert(!finished);
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finished = true;
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while (true) {
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checkInterrupt();
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lzma_ret ret = lzma_code(&strm, LZMA_FINISH);
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if (ret != LZMA_OK && ret != LZMA_STREAM_END)
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throw CompressionError("error while flushing xz file");
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if (strm.avail_out == 0 || ret == LZMA_STREAM_END) {
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nextSink(outbuf, sizeof(outbuf) - strm.avail_out);
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strm.next_out = outbuf;
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strm.avail_out = sizeof(outbuf);
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}
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if (ret == LZMA_STREAM_END) break;
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}
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write(nullptr, 0);
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}
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void write(const unsigned char * data, size_t len) override
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{
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assert(!finished);
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strm.next_in = data;
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strm.avail_in = len;
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while (strm.avail_in) {
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while (!finished && (!data || strm.avail_in)) {
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checkInterrupt();
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lzma_ret ret = lzma_code(&strm, LZMA_RUN);
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if (ret != LZMA_OK)
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throw CompressionError("error while compressing xz file");
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lzma_ret ret = lzma_code(&strm, data ? LZMA_RUN : LZMA_FINISH);
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if (ret != LZMA_OK && ret != LZMA_STREAM_END)
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throw CompressionError("error %d while decompressing xz file", ret);
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if (strm.avail_out == 0) {
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nextSink(outbuf, sizeof(outbuf));
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finished = ret == LZMA_STREAM_END;
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if (strm.avail_out < sizeof(outbuf) || strm.avail_in == 0) {
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nextSink(outbuf, sizeof(outbuf) - strm.avail_out);
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strm.next_out = outbuf;
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strm.avail_out = sizeof(outbuf);
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}
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@ -290,89 +96,36 @@ struct XzSink : CompressionSink
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}
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};
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#ifdef HAVE_LZMA_MT
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struct ParallelXzSink : public XzSink
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{
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ParallelXzSink(Sink &nextSink) : XzSink(nextSink, [this]() {
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lzma_mt mt_options = {};
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mt_options.flags = 0;
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mt_options.timeout = 300; // Using the same setting as the xz cmd line
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mt_options.preset = LZMA_PRESET_DEFAULT;
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mt_options.filters = NULL;
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mt_options.check = LZMA_CHECK_CRC64;
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mt_options.threads = lzma_cputhreads();
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mt_options.block_size = 0;
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if (mt_options.threads == 0)
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mt_options.threads = 1;
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// FIXME: maybe use lzma_stream_encoder_mt_memusage() to control the
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// number of threads.
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return lzma_stream_encoder_mt(&strm, &mt_options);
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}) {}
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};
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#endif
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struct BzipSink : CompressionSink
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struct BzipDecompressionSink : ChunkedCompressionSink
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{
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Sink & nextSink;
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char outbuf[BUFSIZ];
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bz_stream strm;
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bool finished = false;
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BzipSink(Sink & nextSink) : nextSink(nextSink)
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BzipDecompressionSink(Sink & nextSink) : nextSink(nextSink)
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{
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memset(&strm, 0, sizeof(strm));
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int ret = BZ2_bzCompressInit(&strm, 9, 0, 30);
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int ret = BZ2_bzDecompressInit(&strm, 0, 0);
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if (ret != BZ_OK)
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throw CompressionError("unable to initialise bzip2 encoder");
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throw CompressionError("unable to initialise bzip2 decoder");
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strm.next_out = outbuf;
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strm.next_out = (char *) outbuf;
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strm.avail_out = sizeof(outbuf);
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}
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~BzipSink()
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~BzipDecompressionSink()
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{
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BZ2_bzCompressEnd(&strm);
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BZ2_bzDecompressEnd(&strm);
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}
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void finish() override
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{
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flush();
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assert(!finished);
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finished = true;
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while (true) {
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checkInterrupt();
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int ret = BZ2_bzCompress(&strm, BZ_FINISH);
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if (ret != BZ_FINISH_OK && ret != BZ_STREAM_END)
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throw CompressionError("error while flushing bzip2 file");
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if (strm.avail_out == 0 || ret == BZ_STREAM_END) {
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nextSink((unsigned char *) outbuf, sizeof(outbuf) - strm.avail_out);
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strm.next_out = outbuf;
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strm.avail_out = sizeof(outbuf);
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}
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if (ret == BZ_STREAM_END) break;
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}
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}
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void write(const unsigned char * data, size_t len) override
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{
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/* Bzip2's 'avail_in' parameter is an unsigned int, so we need
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to split the input into chunks of at most 4 GiB. */
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while (len) {
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auto n = std::min((size_t) std::numeric_limits<decltype(strm.avail_in)>::max(), len);
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writeInternal(data, n);
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data += n;
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len -= n;
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}
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write(nullptr, 0);
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}
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void writeInternal(const unsigned char * data, size_t len)
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{
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assert(!finished);
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assert(len <= std::numeric_limits<decltype(strm.avail_in)>::max());
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strm.next_in = (char *) data;
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@ -381,12 +134,167 @@ struct BzipSink : CompressionSink
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while (strm.avail_in) {
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checkInterrupt();
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int ret = BZ2_bzCompress(&strm, BZ_RUN);
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if (ret != BZ_OK)
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CompressionError("error while compressing bzip2 file");
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int ret = BZ2_bzDecompress(&strm);
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if (ret != BZ_OK && ret != BZ_STREAM_END)
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throw CompressionError("error while decompressing bzip2 file");
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if (strm.avail_out == 0) {
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nextSink((unsigned char *) outbuf, sizeof(outbuf));
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finished = ret == BZ_STREAM_END;
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if (strm.avail_out < sizeof(outbuf) || strm.avail_in == 0) {
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nextSink(outbuf, sizeof(outbuf) - strm.avail_out);
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strm.next_out = (char *) outbuf;
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strm.avail_out = sizeof(outbuf);
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}
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}
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}
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};
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struct BrotliDecompressionSink : ChunkedCompressionSink
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{
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Sink & nextSink;
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BrotliDecoderState * state;
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bool finished = false;
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BrotliDecompressionSink(Sink & nextSink) : nextSink(nextSink)
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{
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state = BrotliDecoderCreateInstance(nullptr, nullptr, nullptr);
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if (!state)
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throw CompressionError("unable to initialize brotli decoder");
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}
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~BrotliDecompressionSink()
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{
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BrotliDecoderDestroyInstance(state);
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}
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void finish() override
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{
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flush();
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writeInternal(nullptr, 0);
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}
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void writeInternal(const unsigned char * data, size_t len)
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{
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const uint8_t * next_in = data;
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size_t avail_in = len;
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uint8_t * next_out = outbuf;
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size_t avail_out = sizeof(outbuf);
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while (!finished && (!data || avail_in)) {
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checkInterrupt();
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if (!BrotliDecoderDecompressStream(state,
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&avail_in, &next_in,
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&avail_out, &next_out,
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nullptr))
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throw CompressionError("error while decompressing brotli file");
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if (avail_out < sizeof(outbuf) || avail_in == 0) {
|
||||
nextSink(outbuf, sizeof(outbuf) - avail_out);
|
||||
next_out = outbuf;
|
||||
avail_out = sizeof(outbuf);
|
||||
}
|
||||
|
||||
finished = BrotliDecoderIsFinished(state);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
ref<std::string> decompress(const std::string & method, const std::string & in)
|
||||
{
|
||||
StringSink ssink;
|
||||
auto sink = makeDecompressionSink(method, ssink);
|
||||
(*sink)(in);
|
||||
sink->finish();
|
||||
return ssink.s;
|
||||
}
|
||||
|
||||
ref<CompressionSink> makeDecompressionSink(const std::string & method, Sink & nextSink)
|
||||
{
|
||||
if (method == "none" || method == "")
|
||||
return make_ref<NoneSink>(nextSink);
|
||||
else if (method == "xz")
|
||||
return make_ref<XzDecompressionSink>(nextSink);
|
||||
else if (method == "bzip2")
|
||||
return make_ref<BzipDecompressionSink>(nextSink);
|
||||
else if (method == "br")
|
||||
return make_ref<BrotliDecompressionSink>(nextSink);
|
||||
else
|
||||
throw UnknownCompressionMethod("unknown compression method '%s'", method);
|
||||
}
|
||||
|
||||
struct XzCompressionSink : CompressionSink
|
||||
{
|
||||
Sink & nextSink;
|
||||
uint8_t outbuf[BUFSIZ];
|
||||
lzma_stream strm = LZMA_STREAM_INIT;
|
||||
bool finished = false;
|
||||
|
||||
XzCompressionSink(Sink & nextSink, bool parallel) : nextSink(nextSink)
|
||||
{
|
||||
lzma_ret ret;
|
||||
bool done = false;
|
||||
|
||||
if (parallel) {
|
||||
#ifdef HAVE_LZMA_MT
|
||||
lzma_mt mt_options = {};
|
||||
mt_options.flags = 0;
|
||||
mt_options.timeout = 300; // Using the same setting as the xz cmd line
|
||||
mt_options.preset = LZMA_PRESET_DEFAULT;
|
||||
mt_options.filters = NULL;
|
||||
mt_options.check = LZMA_CHECK_CRC64;
|
||||
mt_options.threads = lzma_cputhreads();
|
||||
mt_options.block_size = 0;
|
||||
if (mt_options.threads == 0)
|
||||
mt_options.threads = 1;
|
||||
// FIXME: maybe use lzma_stream_encoder_mt_memusage() to control the
|
||||
// number of threads.
|
||||
ret = lzma_stream_encoder_mt(&strm, &mt_options);
|
||||
done = true;
|
||||
#else
|
||||
printMsg(lvlError, "warning: parallel compression requested but not supported for metho d '%1%', falling back to single-threaded compression", method);
|
||||
#endif
|
||||
}
|
||||
|
||||
if (!done)
|
||||
ret = lzma_easy_encoder(&strm, 6, LZMA_CHECK_CRC64);
|
||||
|
||||
if (ret != LZMA_OK)
|
||||
throw CompressionError("unable to initialise lzma encoder");
|
||||
|
||||
// FIXME: apply the x86 BCJ filter?
|
||||
|
||||
strm.next_out = outbuf;
|
||||
strm.avail_out = sizeof(outbuf);
|
||||
}
|
||||
|
||||
~XzCompressionSink()
|
||||
{
|
||||
lzma_end(&strm);
|
||||
}
|
||||
|
||||
void finish() override
|
||||
{
|
||||
CompressionSink::flush();
|
||||
write(nullptr, 0);
|
||||
}
|
||||
|
||||
void write(const unsigned char * data, size_t len) override
|
||||
{
|
||||
strm.next_in = data;
|
||||
strm.avail_in = len;
|
||||
|
||||
while (!finished && (!data || strm.avail_in)) {
|
||||
checkInterrupt();
|
||||
|
||||
lzma_ret ret = lzma_code(&strm, data ? LZMA_RUN : LZMA_FINISH);
|
||||
if (ret != LZMA_OK && ret != LZMA_STREAM_END)
|
||||
throw CompressionError("error %d while compressing xz file", ret);
|
||||
|
||||
finished = ret == LZMA_STREAM_END;
|
||||
|
||||
if (strm.avail_out < sizeof(outbuf) || strm.avail_in == 0) {
|
||||
nextSink(outbuf, sizeof(outbuf) - strm.avail_out);
|
||||
strm.next_out = outbuf;
|
||||
strm.avail_out = sizeof(outbuf);
|
||||
}
|
||||
|
|
@ -394,21 +302,74 @@ struct BzipSink : CompressionSink
|
|||
}
|
||||
};
|
||||
|
||||
struct BrotliSink : CompressionSink
|
||||
struct BzipCompressionSink : ChunkedCompressionSink
|
||||
{
|
||||
Sink & nextSink;
|
||||
bz_stream strm;
|
||||
bool finished = false;
|
||||
|
||||
BzipCompressionSink(Sink & nextSink) : nextSink(nextSink)
|
||||
{
|
||||
memset(&strm, 0, sizeof(strm));
|
||||
int ret = BZ2_bzCompressInit(&strm, 9, 0, 30);
|
||||
if (ret != BZ_OK)
|
||||
throw CompressionError("unable to initialise bzip2 encoder");
|
||||
|
||||
strm.next_out = (char *) outbuf;
|
||||
strm.avail_out = sizeof(outbuf);
|
||||
}
|
||||
|
||||
~BzipCompressionSink()
|
||||
{
|
||||
BZ2_bzCompressEnd(&strm);
|
||||
}
|
||||
|
||||
void finish() override
|
||||
{
|
||||
flush();
|
||||
writeInternal(nullptr, 0);
|
||||
}
|
||||
|
||||
void writeInternal(const unsigned char * data, size_t len)
|
||||
{
|
||||
assert(len <= std::numeric_limits<decltype(strm.avail_in)>::max());
|
||||
|
||||
strm.next_in = (char *) data;
|
||||
strm.avail_in = len;
|
||||
|
||||
while (!finished && (!data || strm.avail_in)) {
|
||||
checkInterrupt();
|
||||
|
||||
int ret = BZ2_bzCompress(&strm, data ? BZ_RUN : BZ_FINISH);
|
||||
if (ret != BZ_RUN_OK && ret != BZ_FINISH_OK && ret != BZ_STREAM_END)
|
||||
throw CompressionError("error %d while compressing bzip2 file", ret);
|
||||
|
||||
finished = ret == BZ_STREAM_END;
|
||||
|
||||
if (strm.avail_out < sizeof(outbuf) || strm.avail_in == 0) {
|
||||
nextSink(outbuf, sizeof(outbuf) - strm.avail_out);
|
||||
strm.next_out = (char *) outbuf;
|
||||
strm.avail_out = sizeof(outbuf);
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
struct BrotliCompressionSink : ChunkedCompressionSink
|
||||
{
|
||||
Sink & nextSink;
|
||||
uint8_t outbuf[BUFSIZ];
|
||||
BrotliEncoderState *state;
|
||||
bool finished = false;
|
||||
|
||||
BrotliSink(Sink & nextSink) : nextSink(nextSink)
|
||||
BrotliCompressionSink(Sink & nextSink) : nextSink(nextSink)
|
||||
{
|
||||
state = BrotliEncoderCreateInstance(nullptr, nullptr, nullptr);
|
||||
if (!state)
|
||||
throw CompressionError("unable to initialise brotli encoder");
|
||||
}
|
||||
|
||||
~BrotliSink()
|
||||
~BrotliCompressionSink()
|
||||
{
|
||||
BrotliEncoderDestroyInstance(state);
|
||||
}
|
||||
|
|
@ -416,89 +377,47 @@ struct BrotliSink : CompressionSink
|
|||
void finish() override
|
||||
{
|
||||
flush();
|
||||
assert(!finished);
|
||||
|
||||
const uint8_t *next_in = nullptr;
|
||||
size_t avail_in = 0;
|
||||
uint8_t *next_out = outbuf;
|
||||
size_t avail_out = sizeof(outbuf);
|
||||
while (!finished) {
|
||||
checkInterrupt();
|
||||
|
||||
if (!BrotliEncoderCompressStream(state,
|
||||
BROTLI_OPERATION_FINISH,
|
||||
&avail_in, &next_in,
|
||||
&avail_out, &next_out,
|
||||
nullptr))
|
||||
throw CompressionError("error while finishing brotli file");
|
||||
|
||||
finished = BrotliEncoderIsFinished(state);
|
||||
if (avail_out == 0 || finished) {
|
||||
nextSink(outbuf, sizeof(outbuf) - avail_out);
|
||||
next_out = outbuf;
|
||||
avail_out = sizeof(outbuf);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void write(const unsigned char * data, size_t len) override
|
||||
{
|
||||
// Don't feed brotli too much at once
|
||||
const size_t CHUNK_SIZE = sizeof(outbuf) << 2;
|
||||
while (len) {
|
||||
size_t n = std::min(CHUNK_SIZE, len);
|
||||
writeInternal(data, n);
|
||||
data += n;
|
||||
len -= n;
|
||||
}
|
||||
writeInternal(nullptr, 0);
|
||||
}
|
||||
|
||||
void writeInternal(const unsigned char * data, size_t len)
|
||||
{
|
||||
assert(!finished);
|
||||
|
||||
const uint8_t *next_in = data;
|
||||
const uint8_t * next_in = data;
|
||||
size_t avail_in = len;
|
||||
uint8_t *next_out = outbuf;
|
||||
uint8_t * next_out = outbuf;
|
||||
size_t avail_out = sizeof(outbuf);
|
||||
|
||||
while (avail_in > 0) {
|
||||
while (!finished && (!data || avail_in)) {
|
||||
checkInterrupt();
|
||||
|
||||
if (!BrotliEncoderCompressStream(state,
|
||||
BROTLI_OPERATION_PROCESS,
|
||||
&avail_in, &next_in,
|
||||
&avail_out, &next_out,
|
||||
nullptr))
|
||||
throw CompressionError("error while compressing brotli file");
|
||||
data ? BROTLI_OPERATION_PROCESS : BROTLI_OPERATION_FINISH,
|
||||
&avail_in, &next_in,
|
||||
&avail_out, &next_out,
|
||||
nullptr))
|
||||
throw CompressionError("error while compressing brotli compression");
|
||||
|
||||
if (avail_out < sizeof(outbuf) || avail_in == 0) {
|
||||
nextSink(outbuf, sizeof(outbuf) - avail_out);
|
||||
next_out = outbuf;
|
||||
avail_out = sizeof(outbuf);
|
||||
}
|
||||
|
||||
finished = BrotliEncoderIsFinished(state);
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
ref<CompressionSink> makeCompressionSink(const std::string & method, Sink & nextSink, const bool parallel)
|
||||
{
|
||||
if (parallel) {
|
||||
#ifdef HAVE_LZMA_MT
|
||||
if (method == "xz")
|
||||
return make_ref<ParallelXzSink>(nextSink);
|
||||
#endif
|
||||
printMsg(lvlError, format("Warning: parallel compression requested but not supported for method '%1%', falling back to single-threaded compression") % method);
|
||||
}
|
||||
|
||||
if (method == "none")
|
||||
return make_ref<NoneSink>(nextSink);
|
||||
else if (method == "xz")
|
||||
return make_ref<XzSink>(nextSink);
|
||||
return make_ref<XzCompressionSink>(nextSink, parallel);
|
||||
else if (method == "bzip2")
|
||||
return make_ref<BzipSink>(nextSink);
|
||||
return make_ref<BzipCompressionSink>(nextSink);
|
||||
else if (method == "br")
|
||||
return make_ref<BrotliSink>(nextSink);
|
||||
return make_ref<BrotliCompressionSink>(nextSink);
|
||||
else
|
||||
throw UnknownCompressionMethod(format("unknown compression method '%s'") % method);
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue