resource assets stream

May be a workaround for graal vm (#115) or Android (#71)

src/main/java/de/bixilon/minosoft/assets/file/ResourcesAssetsUtil.kt

@@ -1,6 +1,6 @@
 /*
  * Minosoft
- * Copyright (C) 2020-2022 Moritz Zwerger
+ * Copyright (C) 2020-2023 Moritz Zwerger
  *
  * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
  *
@@ -15,6 +15,10 @@ package de.bixilon.minosoft.assets.file
 
 import de.bixilon.minosoft.assets.AssetsManager
 import de.bixilon.minosoft.assets.directory.DirectoryAssetsManager
+import de.bixilon.minosoft.assets.resource.ResourceAssetsManager
+import de.bixilon.minosoft.util.logging.Log
+import de.bixilon.minosoft.util.logging.LogLevels
+import de.bixilon.minosoft.util.logging.LogMessageType
 import java.io.FileNotFoundException
 import java.net.URLDecoder
 import java.nio.charset.StandardCharsets
@@ -23,7 +27,7 @@ import java.nio.charset.StandardCharsets
 object ResourcesAssetsUtil {
 
     fun create(clazz: Class<*>, canUnload: Boolean = true, prefix: String = AssetsManager.DEFAULT_ASSETS_PREFIX): AssetsManager {
-        val rootResources = clazz.classLoader.getResource(prefix) ?: throw FileNotFoundException("Can not find assets folder in $clazz")
+        val rootResources = clazz.classLoader.getResource(prefix) ?: throw FileNotFoundException("Can not find assets root for $clazz")
 
         return when (rootResources.protocol) {
             "file" -> DirectoryAssetsManager(rootResources.path.removeSuffix("/").removeSuffix(prefix), canUnload, prefix) // Read them directly from the folder
@@ -34,7 +38,11 @@ object ResourcesAssetsUtil {
                 ZipAssetsManager(zip, canUnload = canUnload, prefix = prefix)
             }
 
-            else -> throw IllegalStateException("Can not read resources: $rootResources")
+            else -> {
+                Log.log(LogMessageType.ASSETS, LogLevels.WARN) { "Can not find resource manager for $rootResources" }
+
+                ResourceAssetsManager(clazz, prefix)
+            }
         }
     }
 }

src/main/java/de/bixilon/minosoft/assets/multi/PriorityAssetsManager.kt

@@ -56,7 +56,7 @@ class PriorityAssetsManager(
     operator fun plusAssign(manager: AssetsManager) = add(manager)
 
     override fun get(path: ResourceLocation): InputStream {
-        return getOrNull(path) ?: throw FileNotFoundException("Can not find assets-manager for $path")
+        return getOrNull(path) ?: throw FileNotFoundException("Can not find asset $path")
     }
 
     override fun getOrNull(path: ResourceLocation): InputStream? {

src/main/java/de/bixilon/minosoft/assets/resource/ResourceAssetsManager.kt

@@ -0,0 +1,57 @@
+/*
+ * Minosoft
+ * Copyright (C) 2020-2023 Moritz Zwerger
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This software is not affiliated with Mojang AB, the original developer of Minecraft.
+ */
+
+package de.bixilon.minosoft.assets.resource
+
+import de.bixilon.kutil.latch.AbstractLatch
+import de.bixilon.minosoft.assets.AssetsManager
+import de.bixilon.minosoft.data.registries.identified.ResourceLocation
+import de.bixilon.minosoft.util.logging.Log
+import de.bixilon.minosoft.util.logging.LogLevels
+import de.bixilon.minosoft.util.logging.LogMessageType
+import java.io.FileNotFoundException
+import java.io.InputStream
+
+@Deprecated("Super slow")
+class ResourceAssetsManager(
+    val clazz: Class<*>,
+    val prefix: String = AssetsManager.DEFAULT_ASSETS_PREFIX,
+) : AssetsManager {
+    override var loaded: Boolean = false
+
+    override fun load(latch: AbstractLatch?) {
+        Log.log(LogMessageType.ASSETS, LogLevels.WARN) { "Loaded resource assets manager for class $clazz. Performance will be impacted!" }
+    }
+
+    override fun unload() = Unit
+
+    private fun open(path: ResourceLocation): InputStream? {
+        val url = "/$prefix/${path.namespace}/${path.path}"
+
+        return clazz.getResourceAsStream(url)
+    }
+
+    override fun contains(path: ResourceLocation): Boolean {
+        val stream = open(path) ?: return false
+        stream.close()
+        return true
+    }
+
+    override fun get(path: ResourceLocation): InputStream {
+        return open(path) ?: throw FileNotFoundException("Can not find asset $path")
+    }
+
+    override fun getOrNull(path: ResourceLocation): InputStream? {
+        return open(path)
+    }
+}