Replace runescape.com with domain from the config file

Signed-off-by: Graham <gpe@openrs2.dev>

bundler/src/main/java/dev/openrs2/bundler/BundlerModule.kt

@@ -5,6 +5,7 @@ import com.google.inject.multibindings.Multibinder
 import dev.openrs2.asm.transform.Transformer
 import dev.openrs2.bundler.transform.BufferSizeTransformer
 import dev.openrs2.bundler.transform.CachePathTransformer
+import dev.openrs2.bundler.transform.DomainTransformer
 import dev.openrs2.bundler.transform.HostCheckTransformer
 import dev.openrs2.bundler.transform.LoadLibraryTransformer
 import dev.openrs2.bundler.transform.MacResizeTransformer
@@ -24,6 +25,7 @@ object BundlerModule : AbstractModule() {
         binder.addBinding().to(BufferSizeTransformer::class.java)
         binder.addBinding().to(CachePathTransformer::class.java)
         binder.addBinding().to(HostCheckTransformer::class.java)
+        binder.addBinding().to(DomainTransformer::class.java)
         binder.addBinding().to(LoadLibraryTransformer::class.java)
         binder.addBinding().to(MacResizeTransformer::class.java)
         binder.addBinding().to(PlatformDetectionTransformer::class.java)

bundler/src/main/java/dev/openrs2/bundler/transform/DomainTransformer.kt

@@ -0,0 +1,51 @@
+package dev.openrs2.bundler.transform
+
+import com.github.michaelbull.logging.InlineLogger
+import dev.openrs2.asm.classpath.ClassPath
+import dev.openrs2.asm.classpath.Library
+import dev.openrs2.asm.transform.Transformer
+import dev.openrs2.conf.Config
+import org.objectweb.asm.tree.ClassNode
+import org.objectweb.asm.tree.LdcInsnNode
+import org.objectweb.asm.tree.MethodNode
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class DomainTransformer @Inject constructor(
+    private val config: Config
+) : Transformer() {
+    private var domains = 0
+
+    override fun preTransform(classPath: ClassPath) {
+        domains = 0
+    }
+
+    override fun transformCode(classPath: ClassPath, library: Library, clazz: ClassNode, method: MethodNode): Boolean {
+        for (insn in method.instructions) {
+            if (insn !is LdcInsnNode) {
+                continue
+            }
+
+            val cst = insn.cst
+            if (cst !is String) {
+                continue
+            }
+
+            insn.cst = cst.replace("runescape.com", config.domain)
+            if (insn.cst != cst) {
+                domains++
+            }
+        }
+
+        return false
+    }
+
+    override fun postTransform(classPath: ClassPath) {
+        logger.info { "Replaced $domains domains" }
+    }
+
+    companion object {
+        private val logger = InlineLogger()
+    }
+}