Add base classes for encoding/decoding configs

Signed-off-by: Graham <gpe@openrs2.org>
bzip2
Graham 4 years ago
parent e0ec3781ae
commit e5fc516ef1
  1. 29
      cache/src/main/kotlin/org/openrs2/cache/config/ArchiveConfigTypeList.kt
  2. 21
      cache/src/main/kotlin/org/openrs2/cache/config/ConfigType.kt
  3. 42
      cache/src/main/kotlin/org/openrs2/cache/config/ConfigTypeList.kt
  4. 21
      cache/src/main/kotlin/org/openrs2/cache/config/GroupConfigTypeList.kt

@ -0,0 +1,29 @@
package org.openrs2.cache.config
import org.openrs2.cache.Cache
public abstract class ArchiveConfigTypeList<T : ConfigType>(
cache: Cache,
archive: Int,
private val fileBits: Int
) : ConfigTypeList<T>(cache, archive) {
private val fileMask = (1 shl fileBits) - 1
override fun calculateCapacity(): Int {
val archiveCapacity = cache.capacity(archive)
if (archiveCapacity == 0) {
return 0
}
val groupCapacity = cache.capacity(archive, archiveCapacity - 1)
return ((archiveCapacity - 1) shl fileBits) or groupCapacity
}
override fun getGroupId(id: Int): Int {
return id ushr fileBits
}
override fun getFileId(id: Int): Int {
return id and fileMask
}
}

@ -0,0 +1,21 @@
package org.openrs2.cache.config
import io.netty.buffer.ByteBuf
public abstract class ConfigType(
public val id: Int
) {
public abstract fun read(buf: ByteBuf, code: Int)
public abstract fun write(buf: ByteBuf)
public fun read(buf: ByteBuf) {
while (true) {
val code = buf.readUnsignedByte().toInt()
if (code == 0) {
break
}
read(buf, code)
}
}
}

@ -0,0 +1,42 @@
package org.openrs2.cache.config
import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap
import org.openrs2.buffer.use
import org.openrs2.cache.Cache
public abstract class ConfigTypeList<T : ConfigType>(
protected val cache: Cache,
protected val archive: Int
) {
private val types = Int2ObjectOpenHashMap<T>()
public val capacity: Int by lazy {
calculateCapacity()
}
public operator fun get(id: Int): T? {
var type = types[id]
if (type != null) {
return type
}
val group = getGroupId(id)
val file = getFileId(id)
if (!cache.exists(archive, group, file)) {
// TODO(gpe): the client returns an empty config - should we do that?
return null
}
cache.read(archive, group, file).use { buf ->
type = allocate(id)
type.read(buf)
types[id] = type
return type
}
}
protected abstract fun allocate(id: Int): T
protected abstract fun calculateCapacity(): Int
protected abstract fun getGroupId(id: Int): Int
protected abstract fun getFileId(id: Int): Int
}

@ -0,0 +1,21 @@
package org.openrs2.cache.config
import org.openrs2.cache.Cache
public abstract class GroupConfigTypeList<T : ConfigType>(
cache: Cache,
archive: Int,
private val group: Int
) : ConfigTypeList<T>(cache, archive) {
override fun calculateCapacity(): Int {
return cache.capacity(archive, group)
}
override fun getGroupId(id: Int): Int {
return group
}
override fun getFileId(id: Int): Int {
return id
}
}
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