Open-source multiplayer game server compatible with the RuneScape client
https://www.openrs2.org/
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76 lines
2.4 KiB
76 lines
2.4 KiB
package org.openrs2.bundler.transform
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import com.github.michaelbull.logging.InlineLogger
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import org.objectweb.asm.Opcodes
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import org.objectweb.asm.tree.ClassNode
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import org.objectweb.asm.tree.FieldInsnNode
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import org.objectweb.asm.tree.JumpInsnNode
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import org.objectweb.asm.tree.LdcInsnNode
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import org.objectweb.asm.tree.MethodInsnNode
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import org.objectweb.asm.tree.MethodNode
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import org.openrs2.asm.InsnMatcher
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import org.openrs2.asm.classpath.ClassPath
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import org.openrs2.asm.classpath.Library
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import org.openrs2.asm.transform.Transformer
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import javax.inject.Singleton
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@Singleton
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public class MacResizeTransformer : Transformer() {
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private var branchesRemoved = 0
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override fun preTransform(classPath: ClassPath) {
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branchesRemoved = 0
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}
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override fun transformCode(classPath: ClassPath, library: Library, clazz: ClassNode, method: MethodNode): Boolean {
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for (match in DETECT_MAC_MATCHER.match(method)) {
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val getstatic = match[0] as FieldInsnNode
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if (
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getstatic.owner == "loader" ||
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getstatic.owner == "loader!loader" ||
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getstatic.owner == clazz.name ||
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getstatic.desc != "Ljava/lang/String;"
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) {
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continue
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}
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val ldc = match[1] as LdcInsnNode
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if (ldc.cst != "mac") {
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continue
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}
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val invokevirtual = match[2] as MethodInsnNode
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if (
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invokevirtual.owner != "java/lang/String" ||
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invokevirtual.name != "startsWith" ||
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invokevirtual.desc != "(Ljava/lang/String;)Z"
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) {
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continue
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}
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method.instructions.remove(getstatic)
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method.instructions.remove(ldc)
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method.instructions.remove(invokevirtual)
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val branch = match[3] as JumpInsnNode
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if (branch.opcode == Opcodes.IFEQ) {
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branch.opcode = Opcodes.GOTO
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} else {
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method.instructions.remove(branch)
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}
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branchesRemoved++
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}
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return false
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}
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override fun postTransform(classPath: ClassPath) {
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logger.info { "Removed $branchesRemoved branches to macOS-specific resize logic" }
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}
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private companion object {
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private val logger = InlineLogger()
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private val DETECT_MAC_MATCHER = InsnMatcher.compile("GETSTATIC LDC INVOKEVIRTUAL (IFEQ | IFNE)")
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}
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}
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