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character import wip

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This commit is contained in:
minjaesong
2023-08-25 00:24:12 +09:00
parent 8dda7ac79b
commit b1e45f1743
8 changed files with 195 additions and 21 deletions
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39
src/net/torvald/terrarum/serialise/Ascii85.kt
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@@ -4,27 +4,26 @@ import net.torvald.terrarum.savegame.toBigEndian
import java.util.UUID
import kotlin.math.ceil
/**
* Ascii85 implementation with my own character table based on RFC 1924. Will NOT truncate '00000' into something else;
* just gzip the inputstream instead!
/** My own string set that:
* - no "/": avoids nonstandard JSON comment key which GDX will happily parse away
* - no "\": you know what I mean\\intention
* - no "$": avoids Kotlin string template
* - no "[{]},": even the dumbest parser can comprehend the output
*/
object Ascii85 {
/** My own string set that:
* - no "/": avoids nonstandard JSON comment key which GDX will happily parse away
* - no "\": you know what I mean\\intention
* - no "$": avoids Kotlin string template
* - no "[{]},": even the dumbest parser can comprehend the output
*/
private const val CHAR_TABLE = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!#%&'()*+-.:;<=>?@^_`|~"
open class Ascii85Codec(private val CHAR_TABLE: String = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!#%&'()*+-.:;<=>?@^_`|~") {
init {
if (CHAR_TABLE.length != 85) throw IllegalArgumentException("CHAR_TABLE is not 85 chars long")
}
/** As per Adobe standard */
//private val CHAR_TABLE = (33 until (33+85)).toList().map { it.toChar() }.joinToString("") // testing only!
private val INVERSE_TABLE = LongArray(127)
/** Int of `-1` */
const val PAD_BYTE = -1
val PAD_BYTE = -1
/** Null-character (`\0`) */
const val PAD_CHAR = 0.toChar()
val PAD_CHAR = 0.toChar()
private val INTERNAL_PAD_BYTE = 0
private val INTERNAL_PAD_CHAR = CHAR_TABLE.last()
@@ -97,10 +96,10 @@ object Ascii85 {
}
val sum = (INVERSE_TABLE[s1.toInt()] * 52200625) +
(INVERSE_TABLE[s2.toInt()] * 614125) +
(INVERSE_TABLE[s3.toInt()] * 7225) +
(INVERSE_TABLE[s4.toInt()] * 85) +
INVERSE_TABLE[s5.toInt()]
(INVERSE_TABLE[s2.toInt()] * 614125) +
(INVERSE_TABLE[s3.toInt()] * 7225) +
(INVERSE_TABLE[s4.toInt()] * 85) +
INVERSE_TABLE[s5.toInt()]
return ByteArray(4 - padLen) { sum.ushr((3 - it) * 8).and(255).toByte() }
}
@@ -137,6 +136,12 @@ object Ascii85 {
}
}
/**
* Ascii85 implementation with my own character table based on RFC 1924. Will NOT truncate '00000' into something else;
* just gzip the inputstream instead!
*/
object Ascii85 : Ascii85Codec()
fun UUID.toAscii85() =
Ascii85.encodeBytes(this.mostSignificantBits.toBigEndian() + this.leastSignificantBits.toBigEndian())
fun String.ascii85toUUID(): UUID {