Files
Terrarum/src/net/torvald/serialise/WriteMeta.kt
2017-04-17 04:03:58 +09:00

94 lines
3.1 KiB
Kotlin

package net.torvald.serialise
import net.torvald.terrarum.mapgenerator.WorldGenerator
import net.torvald.terrarum.mapgenerator.RoguelikeRandomiser
import net.torvald.terrarum.Terrarum
import net.torvald.terrarum.itemproperties.ItemCodex
import net.torvald.terrarum.itemproperties.MaterialCodex
import net.torvald.terrarum.tileproperties.TilePropCSV
import net.torvald.terrarum.tileproperties.TileCodex
import org.apache.commons.codec.digest.DigestUtils
import java.io.FileInputStream
import java.io.File
import java.io.IOException
import java.nio.charset.Charset
import java.nio.file.*
import java.util.*
/**
* Created by minjaesong on 16-03-15.
*/
object WriteMeta {
val META_FILENAME = "world"
val MAGIC = "TESV".toByteArray(charset = Charset.forName("US-ASCII"))
val BYTE_NULL: Byte = 0
val terraseed: Long = WorldGenerator.SEED
val rogueseed: Long = RoguelikeRandomiser.seed
/**
* Write save meta to specified directory. Returns false if something went wrong.
* @param saveDirectoryName
* @param savegameName -- Nullable. If the value is not specified, saveDirectoryName will be used instead.
*/
fun write(saveDirectoryName: String, savegameName: String?): Boolean {
val hashArray: ArrayList<ByteArray> = ArrayList()
val savenameAsByteArray: ByteArray =
(savegameName ?: saveDirectoryName).toByteArray(Charsets.UTF_8)
// define Strings to be hashed
val props = arrayOf(
TilePropCSV()
//, (item, mat, ...)
)
// get and store hash from the list
props.map { hashArray.add(DigestUtils.sha256(it)) }
// open file and delete it
val metaPath = Paths.get("$Terrarum.defaultSaveDir" +
"/$saveDirectoryName/$META_FILENAME")
val metaTempPath = Files.createTempFile(metaPath.toString(), "_temp")
// TODO gzip
// write bytes in tempfile
Files.write(metaTempPath, MAGIC)
Files.write(metaTempPath, savenameAsByteArray)
Files.write(metaTempPath, byteArrayOf(BYTE_NULL))
Files.write(metaTempPath, toByteArray(terraseed))
Files.write(metaTempPath, toByteArray(rogueseed))
for (hash in hashArray)
Files.write(metaTempPath, hash)
// replace savemeta with tempfile
try {
Files.copy(metaTempPath, metaPath, StandardCopyOption.REPLACE_EXISTING)
Files.deleteIfExists(metaTempPath)
println("Saved metadata to $saveDirectoryName.")
return true
}
catch (e: IOException) {
e.printStackTrace()
}
return false
}
fun toByteArray(long: Long): ByteArray {
return byteArrayOf(
(long.ushr(0x38) and 0xFF).toByte(),
(long.ushr(0x30) and 0xFF).toByte(),
(long.ushr(0x28) and 0xFF).toByte(),
(long.ushr(0x20) and 0xFF).toByte(),
(long.ushr(0x18) and 0xFF).toByte(),
(long.ushr(0x10) and 0xFF).toByte(),
(long.ushr(0x08) and 0xFF).toByte(),
(long and 0xFF).toByte()
)
}
}