Improve resource loading contributed by Jaroslav:

* Implement base64 decoder instead of atob, which is not supported 
  by IE9
* Avoid direct usage of window identifier to prevent global namespace
  from spoiling
* Make customizable approach to supply list of resources to write
  into JavaScript

classlib/src/main/java/org/teavm/classlib/ResourceSupplier.java

@@ -0,0 +1,11 @@
+package org.teavm.classlib;
+
+import org.teavm.model.ListableClassReaderSource;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface ResourceSupplier {
+    String[] supplyResources(ClassLoader classLoader, ListableClassReaderSource classSource);
+}

classlib/src/main/java/org/teavm/classlib/impl/Base64.java

@@ -0,0 +1,87 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.classlib.impl;
+
+import java.util.Arrays;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class Base64 {
+    private static char[] alphabet = new char[64];
+    private static int[] reverse = new int[256];
+
+    static {
+        int i = 0;
+        for (char c = 'A'; c <= 'Z'; ++c) {
+            alphabet[i++] = c;
+        }
+        for (char c = 'a'; c <= 'z'; ++c) {
+            alphabet[i++] = c;
+        }
+        for (char c = '0'; c <= '9'; ++c) {
+            alphabet[i++] = c;
+        }
+        alphabet[i++] = '+';
+        alphabet[i++] = '/';
+
+        Arrays.fill(reverse, -1);
+        for (i = 0; i < alphabet.length; ++i) {
+            reverse[alphabet[i]] = i;
+        }
+    }
+
+    public static byte[] decode(String text) {
+        int outputSize = ((text.length() - 1) / 4 + 1) * 3;
+        int i, j;
+        for (i = text.length() - 1; i >= 0 && text.charAt(i) == '='; --i) {
+            --outputSize;
+        }
+        byte[] output = new byte[outputSize];
+
+        int triples = (outputSize / 3) * 3;
+        i = 0;
+        for (j = 0; i < triples;) {
+            int a = decode(text.charAt(i++));
+            int b = decode(text.charAt(i++));
+            int c = decode(text.charAt(i++));
+            int d = decode(text.charAt(i++));
+            int out = (a << 18) | (b << 12) | (c << 6) | d;
+            output[j++] = (byte) (out >>> 16);
+            output[j++] = (byte) (out >>> 8);
+            output[j++] = (byte) (out);
+        }
+        int rem = output.length - j;
+        if (rem == 1) {
+            int a = decode(text.charAt(i));
+            int b = decode(text.charAt(i + 1));
+            output[j] = (byte) ((a << 2) | (b >>> 4));
+        } else if (rem == 2) {
+            int a = decode(text.charAt(i));
+            int b = decode(text.charAt(i + 1));
+            int c = decode(text.charAt(i + 2));
+            output[j] = (byte) ((a << 2) | (b >>> 4));
+            output[j + 1] = (byte) ((b << 4) | (c >>> 2));
+        }
+
+        return output;
+    }
+
+    private static int decode(char c) {
+        return c < 256 ? reverse[c] : -1;
+    }
+}

classlib/src/main/java/org/teavm/classlib/java/lang/ClassLoaderNativeGenerator.java

@@ -0,0 +1,68 @@
+package org.teavm.classlib.java.lang;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Arrays;
+import java.util.Base64;
+import java.util.HashSet;
+import java.util.ServiceLoader;
+import java.util.Set;
+import org.apache.commons.io.IOUtils;
+import org.teavm.classlib.ResourceSupplier;
+import org.teavm.codegen.SourceWriter;
+import org.teavm.javascript.Renderer;
+import org.teavm.javascript.spi.Injector;
+import org.teavm.javascript.spi.InjectorContext;
+import org.teavm.model.MethodReference;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class ClassLoaderNativeGenerator implements Injector {
+    @Override
+    public void generate(InjectorContext context, MethodReference methodRef) throws IOException {
+        switch (methodRef.getName()) {
+            case "supplyResources":
+                generateSupplyResources(context);
+                break;
+        }
+    }
+
+    private void generateSupplyResources(InjectorContext context) throws IOException {
+        SourceWriter writer = context.getWriter();
+        writer.append("{").indent();
+
+        ClassLoader classLoader = context.getClassLoader();
+        Set<String> resourceSet = new HashSet<>();
+        for (ResourceSupplier supplier : ServiceLoader.load(ResourceSupplier.class, classLoader)) {
+            String[] resources = supplier.supplyResources(classLoader, context.getClassSource());
+            if (resources != null) {
+                resourceSet.addAll(Arrays.asList(resources));
+            }
+        }
+
+        boolean first = true;
+        for (String resource : resourceSet) {
+            try (InputStream input = classLoader.getResourceAsStream(resource)) {
+                if (input == null) {
+                    continue;
+                }
+                if (!first) {
+                    writer.append(',');
+                }
+                first = false;
+                writer.newLine();
+                String data = Base64.getEncoder().encodeToString(IOUtils.toByteArray(input));
+                writer.append("\"").append(Renderer.escapeString(resource)).append("\"");
+                writer.ws().append(':').ws();
+                writer.append("\"").append(data).append("\"");
+            }
+        }
+
+        if (!first) {
+            writer.newLine();
+        }
+        writer.outdent().append('}');
+    }
+}

classlib/src/main/java/org/teavm/classlib/java/lang/TClass.java

@@ -15,15 +15,12 @@
  */
 package org.teavm.classlib.java.lang;
 
-import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 import java.util.HashMap;
 import java.util.Map;
-
 import org.teavm.classlib.impl.DeclaringClassMetadataGenerator;
 import org.teavm.classlib.java.lang.annotation.TAnnotation;
 import org.teavm.classlib.java.lang.reflect.TAnnotatedElement;
-import org.teavm.jso.JSBody;
 import org.teavm.platform.Platform;
 import org.teavm.platform.PlatformClass;
 import org.teavm.platform.metadata.ClassResource;
@@ -270,23 +267,21 @@ public class TClass<T> extends TObject implements TAnnotatedElement {
         }
     }
 
-    @JSBody(params = "res", script = 
-        "if (!window.teaVMResources) return null;\n"
-      + "var data = window.teaVMResources[res];\n"
-      + "return data ? window.atob(data) : null;\n"
-    )
-    private static native String readResource(String message);
-
     public InputStream getResourceAsStream(String name) {
-        TString clazzName = getName();
-        int lastDot = clazzName.lastIndexOf('.');
-        String resName;
-        if (lastDot == -1) {
-            resName = name;
-        } else {
-            resName = clazzName.substring(0, lastDot).replace('.', '/') + "/" + name;
+        if (name.startsWith("/")) {
+            return getClassLoader().getResourceAsStream(name.substring(1));
         }
-        String data = readResource(resName);
-        return data == null ? null : new ByteArrayInputStream(data.getBytes());
+
+        TClass<?> cls = this;
+        while (cls.isArray()) {
+            cls = cls.getComponentType();
+        }
+        String prefix = cls.getName().toString();
+        int index = prefix.lastIndexOf('.');
+        if (index >= 0) {
+            name = prefix.substring(0, index + 1).replace('.', '/') + name;
+        }
+
+        return getClassLoader().getResourceAsStream(name);
     }
 }

classlib/src/main/java/org/teavm/classlib/java/lang/TClassLoader.java

@@ -15,6 +15,13 @@
  */
 package org.teavm.classlib.java.lang;
 
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import org.teavm.classlib.impl.Base64;
+import org.teavm.javascript.spi.InjectedBy;
+import org.teavm.jso.JSIndexer;
+import org.teavm.jso.JSObject;
+
 /**
  *
  * @author Alexey Andreev
@@ -22,6 +29,7 @@ package org.teavm.classlib.java.lang;
 public abstract class TClassLoader extends TObject {
     private TClassLoader parent;
     private static TSystemClassLoader systemClassLoader = new TSystemClassLoader();
+    private static ResourceContainer resources;
 
     protected TClassLoader() {
         this(null);
@@ -38,4 +46,20 @@ public abstract class TClassLoader extends TObject {
     public static TClassLoader getSystemClassLoader() {
         return systemClassLoader;
     }
+
+    public InputStream getResourceAsStream(String name) {
+        if (resources == null) {
+            resources = supplyResources();
+        }
+        String data = resources.getResource(name);
+        return data == null ? null : new ByteArrayInputStream(Base64.decode(data));
+    }
+
+    @InjectedBy(ClassLoaderNativeGenerator.class)
+    private static native ResourceContainer supplyResources();
+
+    static interface ResourceContainer extends JSObject {
+        @JSIndexer
+        String getResource(String name);
+    }
 }

classlib/src/test/java/org/teavm/classlib/impl/Base64Test.java

@@ -0,0 +1,45 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.classlib.impl;
+
+import static org.junit.Assert.*;
+import java.io.UnsupportedEncodingException;
+import org.junit.Test;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class Base64Test {
+    @Test
+    public void decoderWorks() {
+        assertEquals("q", decode("cQ=="));
+        assertEquals("qw", decode("cXc="));
+        assertEquals("qwe", decode("cXdl"));
+        assertEquals("qwer", decode("cXdlcg=="));
+        assertEquals("qwert", decode("cXdlcnQ="));
+        assertEquals("qwerty", decode("cXdlcnR5"));
+        assertEquals("qwertyu", decode("cXdlcnR5dQ=="));
+    }
+
+    private String decode(String text) {
+        try {
+            return new String(Base64.decode(text), "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            return "";
+        }
+    }
+}

core/src/main/java/org/teavm/javascript/Renderer.java

@@ -2377,6 +2377,16 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
         public Precedence getPrecedence() {
             return precedence;
         }
+
+        @Override
+        public ClassLoader getClassLoader() {
+            return classLoader;
+        }
+
+        @Override
+        public ListableClassReaderSource getClassSource() {
+            return classSource;
+        }
     }
 
     @Override

core/src/main/java/org/teavm/javascript/spi/InjectorContext.java

@@ -21,6 +21,7 @@ import org.teavm.codegen.SourceWriter;
 import org.teavm.common.ServiceRepository;
 import org.teavm.javascript.Precedence;
 import org.teavm.javascript.ast.Expr;
+import org.teavm.model.ListableClassReaderSource;
 import org.teavm.model.ValueType;
 
 /**
@@ -47,4 +48,8 @@ public interface InjectorContext extends ServiceRepository {
     void writeExpr(Expr expr, Precedence precedence) throws IOException;
 
     Precedence getPrecedence();
+
+    ClassLoader getClassLoader();
+
+    ListableClassReaderSource getClassSource();
 }

html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java

@@ -29,6 +29,5 @@ public class HTML4JPlugin implements TeaVMPlugin {
         host.add(new JavaScriptBodyTransformer());
         host.add(new JCLHacks());
         host.add(new JavaScriptResourceInterceptor());
-        host.add(new ResourcesInterceptor());
     }
 }

html4j/src/main/java/org/teavm/html4j/HTML4jResourceSupplier.java

@@ -0,0 +1,43 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.html4j;
+
+import java.util.HashSet;
+import java.util.Set;
+import org.teavm.classlib.ResourceSupplier;
+import org.teavm.model.ListableClassReaderSource;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class HTML4jResourceSupplier implements ResourceSupplier {
+    @Override
+    public String[] supplyResources(ClassLoader classLoader, ListableClassReaderSource classSource) {
+        Set<String> resources = new HashSet<>();
+        for (String className : classSource.getClassNames()) {
+            final int lastDot = className.lastIndexOf('.');
+            if (lastDot == -1) {
+                continue;
+            }
+            String packageName = className.substring(0, lastDot);
+            String resourceName = packageName.replace('.', '/') + "/" + "jvm.txt";
+            resources.add(resourceName);
+        }
+
+        return resources.toArray(new String[0]);
+    }
+}

html4j/src/main/resources/META-INF/services/org.teavm.classlib.ResourceSupplier

@@ -0,0 +1 @@
+org.teavm.html4j.HTML4jResourceSupplier

tests/src/test/java/org/teavm/classlib/java/lang/ClassLoaderTest.java

@@ -0,0 +1,50 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.classlib.java.lang;
+
+import static org.junit.Assert.*;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import org.junit.Test;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class ClassLoaderTest {
+    @Test
+    public void loadsResources() {
+        assertEquals("q", loadResource("1"));
+        assertEquals("qw", loadResource("2"));
+        assertEquals("qwe", loadResource("3"));
+        assertEquals("qwer", loadResource("4"));
+        assertEquals("qwert", loadResource("5"));
+        assertEquals("qwerty", loadResource("6"));
+        assertEquals("qwertyu", loadResource("7"));
+        assertEquals("qwertyui", loadResource("8"));
+    }
+
+    private static String loadResource(String name) {
+        ClassLoader classLoader = ClassLoader.getSystemClassLoader();
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(classLoader.getResourceAsStream(
+                "resources-for-test/" + name), "UTF-8"))) {
+            return reader.readLine();
+        } catch (IOException e) {
+            return "";
+        }
+    }
+}

tests/src/test/java/org/teavm/classlib/java/lang/TestResourcesSupplier.java

@@ -0,0 +1,34 @@
+/*
+ *  Copyright 2015 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.classlib.java.lang;
+
+import org.teavm.classlib.ResourceSupplier;
+import org.teavm.model.ListableClassReaderSource;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class TestResourcesSupplier implements ResourceSupplier {
+    @Override
+    public String[] supplyResources(ClassLoader classLoader, ListableClassReaderSource classSource) {
+        String[] result = { "1", "2", "3", "4", "5", "6", "7", "8" };
+        for (int i = 0; i < result.length; ++i) {
+            result[i] = "resources-for-test/" + result[i];
+        }
+        return result;
+    }
+}

tests/src/test/resources/META-INF/services/org.teavm.classlib.ResourceSupplier

@@ -0,0 +1 @@
+org.teavm.classlib.java.lang.TestResourcesSupplier

tests/src/test/resources/resources-for-test/1

@@ -0,0 +1 @@
+q

tests/src/test/resources/resources-for-test/2

@@ -0,0 +1 @@
+qw

tests/src/test/resources/resources-for-test/3

@@ -0,0 +1 @@
+qwe

tests/src/test/resources/resources-for-test/4

@@ -0,0 +1 @@
+qwer

tests/src/test/resources/resources-for-test/5

@@ -0,0 +1 @@
+qwert

tests/src/test/resources/resources-for-test/6

@@ -0,0 +1 @@
+qwerty

tests/src/test/resources/resources-for-test/7

@@ -0,0 +1 @@
+qwertyu

tests/src/test/resources/resources-for-test/8

@@ -0,0 +1 @@
+qwertyui