private static void Expand(string fromPath, string toPath, string fromDictionaryPath)
{
VerifyFileExists(fromPath);
VerifyFileExists(fromDictionaryPath);
using (new ConsoleWatch($"Expanding {fromPath}...",
() => $"Done. {FileLength.MB(fromPath)} + {FileLength.MB(fromDictionaryPath)} dictionary to {FileLength.MB(toPath)}"))
{
WordCompressor.Expand(fromPath, toPath, fromDictionaryPath);
}
}
private void DecompressString()
{
if (_decompressReader == null)
{
_decompressReader = BufferedReader.FromArray(_reader.Buffer, 0, 0);
_decompressWriter = BufferedWriter.ToArray(new byte[1024]);
}
_decompressReader.ReadSlice(_reader.Buffer, _currentCompressedStringStart, _reader.Index - 1);
_decompressWriter.Index = 0;
// Decompress the content
_compressor.Expand(_decompressReader, _decompressWriter);
// Make a String8 referencing the full decompressed value
_currentString = String8.Reference(_decompressWriter.Buffer, 0, _decompressWriter.Index);
}
public void WordCompressor_RoundTrip()
{
string originalPath = @"Content\Medium.json";
string compressedPath = "Medium.compressed.bin";
string dictionaryPath = "Medium.compressed.dict";
string comparePath = "Medium.roundtrip.json";
// Roundtrip without optimization; verify files equal
WordCompressor.Compress(originalPath, compressedPath, dictionaryPath, false);
WordCompressor.Expand(compressedPath, comparePath, dictionaryPath);
Verify.FilesEqual(originalPath, comparePath);
Verify.SizeRatioUnder(originalPath, compressedPath, 0.5f);
File.Delete(compressedPath);
File.Delete(dictionaryPath);
File.Delete(comparePath);
// Roundtrip *with* optimization; verify files equal
WordCompressor.Compress(originalPath, compressedPath, dictionaryPath, true);
WordCompressor.Expand(compressedPath, comparePath, dictionaryPath);
Verify.FilesEqual(originalPath, comparePath);
Verify.SizeRatioUnder(originalPath, compressedPath, 0.5f);
}
