Refactored OpenGL embedder that works on Android, Mac or Linux.

runtime/embedders/openglui/common/resource.h

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef EMBEDDERS_OPENGLUI_COMMON_RESOURCE_H_
+#define EMBEDDERS_OPENGLUI_COMMON_RESOURCE_H_
+
+#include <stdlib.h>
+
+class Resource {
+  public:
+    explicit Resource(const char* path)
+        :  path_(path),
+           descriptor_(-1),
+           start_(0),
+           length_(-1) {
+    }
+
+    const char* path() {
+      return path_;
+    }
+
+    virtual int32_t descriptor() {
+      return descriptor_;
+    }
+
+    virtual off_t start() {
+      return start_;
+    }
+
+    virtual off_t length() {
+      return length_;
+    }
+
+    virtual int32_t Open() {
+      return -1;
+    }
+
+    virtual void Close() {
+    }
+
+    virtual int32_t Read(void* buffer, size_t count) {
+      return -1;
+    }
+
+    virtual ~Resource() {
+    }
+
+  protected:
+    const char* path_;
+    int32_t descriptor_;
+    off_t start_;
+    off_t length_;
+};
+
+#endif  // EMBEDDERS_OPENGLUI_COMMON_RESOURCE_H_
+