gt:         StringBuilder buf = new StringBuilder();
context: /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * 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 android.opengl;
  
  import java.io.IOException;
  import java.io.Writer;
  
  import javax.microedition.khronos.egl.EGL;
  import javax.microedition.khronos.egl.EGL10;
  import javax.microedition.khronos.egl.EGL11;
  import javax.microedition.khronos.egl.EGLConfig;
  import javax.microedition.khronos.egl.EGLContext;
  import javax.microedition.khronos.egl.EGLDisplay;
  import javax.microedition.khronos.egl.EGLSurface;
  
  class EGLLogWrapper implements EGL11 {
      private EGL10 mEgl10;
      Writer mLog;
      boolean mLogArgumentNames;
      boolean mCheckError;
      private int mArgCount;
  
  
      public EGLLogWrapper(EGL egl, int configFlags, Writer log) {
          mEgl10 = (EGL10) egl;
          mLog = log;
          mLogArgumentNames =
              (GLDebugHelper.CONFIG_LOG_ARGUMENT_NAMES & configFlags) != 0;
          mCheckError =
              (GLDebugHelper.CONFIG_CHECK_GL_ERROR & configFlags) != 0;
      }
  
      public boolean eglChooseConfig(EGLDisplay display, int[] attrib_list,
              EGLConfig[] configs, int config_size, int[] num_config) {
          begin("eglChooseConfig");
          arg("display", display);
          arg("attrib_list", attrib_list);
          arg("config_size", config_size);
          end();
  
          boolean result = mEgl10.eglChooseConfig(display, attrib_list, configs,
                  config_size, num_config);
          arg("configs", configs);
          arg("num_config", num_config);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglCopyBuffers(EGLDisplay display, EGLSurface surface,
              Object native_pixmap) {
          begin("eglCopyBuffers");
          arg("display", display);
          arg("surface", surface);
          arg("native_pixmap", native_pixmap);
          end();
  
          boolean result = mEgl10.eglCopyBuffers(display, surface, native_pixmap);
          returns(result);
          checkError();
          return result;
      }
  
      public EGLContext eglCreateContext(EGLDisplay display, EGLConfig config,
              EGLContext share_context, int[] attrib_list) {
          begin("eglCreateContext");
          arg("display", display);
          arg("config", config);
          arg("share_context", share_context);
          arg("attrib_list", attrib_list);
          end();
  
          EGLContext result = mEgl10.eglCreateContext(display, config,
                  share_context, attrib_list);
          returns(result);
          checkError();
          return result;
      }
  
      public EGLSurface eglCreatePbufferSurface(EGLDisplay display,
              EGLConfig config, int[] attrib_list) {
          begin("eglCreatePbufferSurface");
          arg("display", display);
          arg("config", config);
          arg("attrib_list", attrib_list);
          end();
  
          EGLSurface result = mEgl10.eglCreatePbufferSurface(display, config,
                  attrib_list);
          returns(result);
          checkError();
          return result;
      }
  
      public EGLSurface eglCreatePixmapSurface(EGLDisplay display,
              EGLConfig config, Object native_pixmap, int[] attrib_list) {
          begin("eglCreatePixmapSurface");
          arg("display", display);
          arg("config", config);
          arg("native_pixmap", native_pixmap);
          arg("attrib_list", attrib_list);
          end();
  
          EGLSurface result = mEgl10.eglCreatePixmapSurface(display, config,
                  native_pixmap, attrib_list);
          returns(result);
          checkError();
          return result;
          }
  
      public EGLSurface eglCreateWindowSurface(EGLDisplay display,
              EGLConfig config, Object native_window, int[] attrib_list) {
          begin("eglCreateWindowSurface");
          arg("display", display);
          arg("config", config);
          arg("native_window", native_window);
          arg("attrib_list", attrib_list);
          end();
  
          EGLSurface result = mEgl10.eglCreateWindowSurface(display, config,
                  native_window, attrib_list);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglDestroyContext(EGLDisplay display, EGLContext context) {
          begin("eglDestroyContext");
          arg("display", display);
          arg("context", context);
          end();
  
          boolean result = mEgl10.eglDestroyContext(display, context);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglDestroySurface(EGLDisplay display, EGLSurface surface) {
          begin("eglDestroySurface");
          arg("display", display);
          arg("surface", surface);
          end();
  
          boolean result = mEgl10.eglDestroySurface(display, surface);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglGetConfigAttrib(EGLDisplay display, EGLConfig config,
              int attribute, int[] value) {
          begin("eglGetConfigAttrib");
          arg("display", display);
          arg("config", config);
          arg("attribute", attribute);
          end();
          boolean result = mEgl10.eglGetConfigAttrib(display, config, attribute,
                  value);
          arg("value", value);
          returns(result);
          checkError();
          return false;
      }
  
      public boolean eglGetConfigs(EGLDisplay display, EGLConfig[] configs,
              int config_size, int[] num_config) {
          begin("eglGetConfigs");
          arg("display", display);
          arg("config_size", config_size);
          end();
  
          boolean result = mEgl10.eglGetConfigs(display, configs, config_size,
                  num_config);
          arg("configs", configs);
          arg("num_config", num_config);
          returns(result);
          checkError();
          return result;
      }
  
      public EGLContext eglGetCurrentContext() {
          begin("eglGetCurrentContext");
          end();
  
          EGLContext result = mEgl10.eglGetCurrentContext();
          returns(result);
  
          checkError();
          return result;
      }
  
      public EGLDisplay eglGetCurrentDisplay() {
          begin("eglGetCurrentDisplay");
          end();
  
          EGLDisplay result = mEgl10.eglGetCurrentDisplay();
          returns(result);
  
          checkError();
          return result;
      }
  
      public EGLSurface eglGetCurrentSurface(int readdraw) {
          begin("eglGetCurrentSurface");
          arg("readdraw", readdraw);
          end();
  
          EGLSurface result = mEgl10.eglGetCurrentSurface(readdraw);
          returns(result);
  
          checkError();
          return result;
      }
  
      public EGLDisplay eglGetDisplay(Object native_display) {
          begin("eglGetDisplay");
          arg("native_display", native_display);
          end();
  
          EGLDisplay result = mEgl10.eglGetDisplay(native_display);
          returns(result);
  
          checkError();
          return result;
      }
  
      public int eglGetError() {
          begin("eglGetError");
          end();
  
          int result = mEgl10.eglGetError();
          returns(getErrorString(result));
  
          return result;
      }
  
      public boolean eglInitialize(EGLDisplay display, int[] major_minor) {
          begin("eglInitialize");
          arg("display", display);
          end();
          boolean result = mEgl10.eglInitialize(display, major_minor);
          returns(result);
          arg("major_minor", major_minor);
          checkError();
          return result;
      }
  
      public boolean eglMakeCurrent(EGLDisplay display, EGLSurface draw,
              EGLSurface read, EGLContext context) {
          begin("eglMakeCurrent");
          arg("display", display);
          arg("draw", draw);
          arg("read", read);
          arg("context", context);
          end();
          boolean result = mEgl10.eglMakeCurrent(display, draw, read, context);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglQueryContext(EGLDisplay display, EGLContext context,
              int attribute, int[] value) {
          begin("eglQueryContext");
          arg("display", display);
          arg("context", context);
          arg("attribute", attribute);
          end();
          boolean result = mEgl10.eglQueryContext(display, context, attribute,
                  value);
          returns(value[0]);
          returns(result);
          checkError();
          return result;
      }
  
      public String eglQueryString(EGLDisplay display, int name) {
          begin("eglQueryString");
          arg("display", display);
          arg("name", name);
          end();
          String result = mEgl10.eglQueryString(display, name);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglQuerySurface(EGLDisplay display, EGLSurface surface,
              int attribute, int[] value) {
          begin("eglQuerySurface");
          arg("display", display);
          arg("surface", surface);
          arg("attribute", attribute);
          end();
          boolean result = mEgl10.eglQuerySurface(display, surface, attribute,
                  value);
          returns(value[0]);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglSwapBuffers(EGLDisplay display, EGLSurface surface) {
          begin("eglInitialize");
          arg("display", display);
          arg("surface", surface);
          end();
          boolean result = mEgl10.eglSwapBuffers(display, surface);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglTerminate(EGLDisplay display) {
          begin("eglTerminate");
          arg("display", display);
          end();
          boolean result = mEgl10.eglTerminate(display);
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglWaitGL() {
          begin("eglWaitGL");
          end();
          boolean result = mEgl10.eglWaitGL();
          returns(result);
          checkError();
          return result;
      }
  
      public boolean eglWaitNative(int engine, Object bindTarget) {
          begin("eglWaitNative");
          arg("engine", engine);
          arg("bindTarget", bindTarget);
          end();
          boolean result = mEgl10.eglWaitNative(engine, bindTarget);
          returns(result);
          checkError();
          return result;
      }
  
      private void checkError() {
          int eglError;
          if ((eglError = mEgl10.eglGetError()) != EGL_SUCCESS) {
              String errorMessage = "eglError: " + getErrorString(eglError);
              logLine(errorMessage);
              if (mCheckError) {
                  throw new GLException(eglError, errorMessage);
              }
          }
      }
  
      private void logLine(String message) {
          log(message + '\n');
      }
  
      private void log(String message) {
          try {
              mLog.write(message);
          } catch (IOException e) {
              // Ignore exception, keep on trying
          }
      }
  
      private void begin(String name) {
          log(name + '(');
          mArgCount = 0;
      }
  
      private void arg(String name, String value) {
          if (mArgCount++ > 0) {
              log(", ");
          }
          if (mLogArgumentNames) {
              log(name + "=");
          }
          log(value);
      }
  
      private void end() {
          log(");\n");
          flush();
      }
  
      private void flush() {
          try {
              mLog.flush();
          } catch (IOException e) {
              mLog = null;
          }
      }
  
      private void arg(String name, int value) {
          arg(name, Integer.toString(value));
      }
  
      private void arg(String name, Object object) {
          arg(name, toString(object));
      }
  
      private void arg(String name, EGLDisplay object) {
          if (object == EGL10.EGL_DEFAULT_DISPLAY) {
              arg(name, "EGL10.EGL_DEFAULT_DISPLAY");
          } else if (object == EGL_NO_DISPLAY) {
              arg(name, "EGL10.EGL_NO_DISPLAY");
          } else {
              arg(name, toString(object));
          }
      }
  
      private void arg(String name, EGLContext object) {
          if (object == EGL10.EGL_NO_CONTEXT) {
              arg(name, "EGL10.EGL_NO_CONTEXT");
          } else {
              arg(name, toString(object));
          }
      }
  
      private void arg(String name, EGLSurface object) {
          if (object == EGL10.EGL_NO_SURFACE) {
              arg(name, "EGL10.EGL_NO_SURFACE");
          } else {
              arg(name, toString(object));
          }
      }
  
      private void returns(String result) {
          log(" returns " + result + ";\n");
          flush();
      }
  
      private void returns(int result) {
          returns(Integer.toString(result));
      }
  
      private void returns(boolean result) {
          returns(Boolean.toString(result));
      }
  
      private void returns(Object result) {
          returns(toString(result));
      }
  
      private String toString(Object obj) {
          if (obj == null) {
              return "null";
          } else {
              return obj.toString();
          }
      }
  
      private void arg(String name, int[] arr) {
          if (arr == null) {
              arg(name, "null");
          } else {
              arg(name, toString(arr.length, arr, 0));
          }
      }
  
      private void arg(String name, Object[] arr) {
          if (arr == null) {
              arg(name, "null");
          } else {
              arg(name, toString(arr.length, arr, 0));
          }
      }
  
      private String toString(int n, int[] arr, int offset) {
  