Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
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32 lines
1.2 KiB
32 lines
1.2 KiB
package dev.openrs2.compress.lzma
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import com.google.common.io.LittleEndianDataInputStream
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import com.google.common.io.LittleEndianDataOutputStream
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import org.tukaani.xz.LZMA2Options
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import org.tukaani.xz.LZMAInputStream
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import org.tukaani.xz.LZMAOutputStream
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import java.io.InputStream
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import java.io.OutputStream
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object Lzma {
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val BEST_SPEED = LZMA2Options(LZMA2Options.PRESET_MIN)
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val DEFAULT_COMPRESSION = LZMA2Options(LZMA2Options.PRESET_DEFAULT)
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val BEST_COMPRESSION = LZMA2Options(LZMA2Options.PRESET_MAX)
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fun createHeaderlessInputStream(input: InputStream, length: Long): InputStream {
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val headerInput = LittleEndianDataInputStream(input)
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val properties = headerInput.readByte()
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val dictionarySize = headerInput.readInt()
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return LZMAInputStream(input, length, properties, dictionarySize)
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}
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fun createHeaderlessOutputStream(output: OutputStream, options: LZMA2Options): OutputStream {
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val headerOutput = LittleEndianDataOutputStream(output)
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headerOutput.writeByte((options.pb * 5 + options.lp) * 9 + options.lc)
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headerOutput.writeInt(options.dictSize)
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return LZMAOutputStream(output, options, false)
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}
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}
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