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let's compress everything because we can

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minjaesong
2021-08-24 16:35:48 +09:00
parent cb73a9fea2
commit 126a4325d2
4 changed files with 111 additions and 8 deletions
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30
src/net/torvald/terrarum/serialise/WriteMeta.kt
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@@ -3,12 +3,14 @@ package net.torvald.terrarum.serialise
import com.badlogic.gdx.utils.Json
import com.badlogic.gdx.utils.JsonValue
import com.badlogic.gdx.utils.JsonWriter
import com.badlogic.gdx.utils.compression.Lzma
import net.torvald.terrarum.ModMgr
import net.torvald.terrarum.gameworld.BlockLayer
import net.torvald.terrarum.modulebasegame.TerrarumIngame
import net.torvald.terrarum.modulebasegame.worldgenerator.RoguelikeRandomiser
import net.torvald.terrarum.modulecomputers.virtualcomputer.tvd.ByteArray64GrowableOutputStream
import net.torvald.terrarum.weather.WeatherMixer
import java.io.ByteArrayInputStream
import java.util.zip.GZIPOutputStream
/**
@@ -95,5 +97,33 @@ fun bytesToZipdStr(b: ByteArray): String {
bai += 1
}; sb.append(Ascii85.encode(buf[0], buf[1], buf[2], buf[3]))
return sb.toString()
}
/**
* @param b a ByteArray
* @return Bytes in [b] which are LZMA'd then Ascii85-encoded
*/
fun bytesToLzmadStr(b: ByteArray): String {
val sb = StringBuilder()
val bi = ByteArrayInputStream(b)
val bo = ByteArray64GrowableOutputStream()
Lzma.compress(bi, bo); bo.flush(); bo.close()
val ba = bo.toByteArray64()
var bai = 0
val buf = IntArray(4) { Ascii85.PAD_BYTE }
ba.forEach {
if (bai > 0 && bai % 4 == 0) {
sb.append(Ascii85.encode(buf[0], buf[1], buf[2], buf[3]))
buf.fill(Ascii85.PAD_BYTE)
}
buf[bai % 4] = it.toInt() and 255
bai += 1
}; sb.append(Ascii85.encode(buf[0], buf[1], buf[2], buf[3]))
return sb.toString()
}