From d9ee68315e52f309cd65acc0d4b16fa4d7f35476 Mon Sep 17 00:00:00 2001
From: Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Date: Thu, 24 Dec 2015 07:33:52 +0100
Subject: [PATCH] Can include resources in the generated file

---
 .../java/org/teavm/html4j/HTML4JPlugin.java   |  1 +
 .../teavm/html4j/ResourcesInterceptor.java    | 66 +++++++++++++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 html4j/src/main/java/org/teavm/html4j/ResourcesInterceptor.java

diff --git a/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java b/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java
index 1530d308d..118a3ab80 100644
--- a/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java
+++ b/html4j/src/main/java/org/teavm/html4j/HTML4JPlugin.java
@@ -29,5 +29,6 @@ public class HTML4JPlugin implements TeaVMPlugin {
         host.add(new JavaScriptBodyTransformer());
         host.add(new JCLHacks());
         host.add(new JavaScriptResourceInterceptor());
+        host.add(new ResourcesInterceptor());
     }
 }
diff --git a/html4j/src/main/java/org/teavm/html4j/ResourcesInterceptor.java b/html4j/src/main/java/org/teavm/html4j/ResourcesInterceptor.java
new file mode 100644
index 000000000..6c7cc0715
--- /dev/null
+++ b/html4j/src/main/java/org/teavm/html4j/ResourcesInterceptor.java
@@ -0,0 +1,66 @@
+/*
+ *  Copyright 2014 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.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Base64;
+import java.util.HashSet;
+import java.util.Set;
+import org.apache.commons.io.IOUtils;
+import org.teavm.codegen.SourceWriter;
+import org.teavm.javascript.RenderingContext;
+import org.teavm.vm.BuildTarget;
+import org.teavm.vm.spi.AbstractRendererListener;
+
+/**
+ *
+ * @author Jaroslav Tulach
+ */
+public class ResourcesInterceptor extends AbstractRendererListener {
+    private final Set<String> processed = new HashSet<>();
+    @Override
+    public void begin(RenderingContext context, BuildTarget buildTarget) throws IOException {
+        boolean hasOneResource = false;
+        for (String className : context.getClassSource().getClassNames()) {
+            final int lastDot = className.lastIndexOf('.');
+            if (lastDot == -1) {
+                continue;
+            }
+            String packageName = className.substring(0, lastDot);
+            String resourceName = packageName.replace('.', '/') + "/" + "jvm.txt";
+            try (InputStream input = context.getClassLoader().getResourceAsStream(resourceName)) {
+                if (input == null || !processed.add(resourceName)) {
+                    continue;
+                }
+                ByteArrayOutputStream arr = new ByteArrayOutputStream();
+                IOUtils.copy(input, arr);
+                String base64 = Base64.getEncoder().encodeToString(arr.toByteArray());
+                input.close();
+                final SourceWriter w = context.getWriter();
+                w.append("// Resource " + resourceName + " included by " + className).newLine();
+                w.append("if (!window.teaVMResources) window.teaVMResources = {};").newLine();
+                w.append("window.teaVMResources['" + resourceName + "'] = '");
+                w.append(base64).append("';").newLine().newLine();
+            }
+            hasOneResource = true;
+        }
+        if (hasOneResource) {
+            context.getWriter().append("// TeaVM generated classes").newLine();
+        }
+    }
+}