content: /*
   * Copyright 2012 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.
   */
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.FileReader;
  import java.io.IOException;
  import java.io.PrintStream;
  
  public class GenerateEGL {
  
      private static void copy(String filename, PrintStream out) throws IOException {
          BufferedReader br = new BufferedReader(new FileReader(filename));
          String s;
          while ((s = br.readLine()) != null) {
              out.println(s);
          }
      }
  
      private static void emit(EGLCodeEmitter emitter,
                               BufferedReader specReader,
                               PrintStream glStream,
                               PrintStream cStream) throws Exception {
          String s = null;
          while ((s = specReader.readLine()) != null) {
              if (s.trim().startsWith("//")) {
                  continue;
              }
  
              CFunc cfunc = CFunc.parseCFunc(s);
  
              String fname = cfunc.getName();
              String stubRoot = "stubs/egl/" + fname;
              String javaPath = stubRoot + ".java";
              File f = new File(javaPath);
              if (f.exists()) {
                  System.out.println("Special-casing function " + fname);
                  copy(javaPath, glStream);
                  copy(stubRoot + ".cpp", cStream);
  
                  // Register native function names
                  // This should be improved to require fewer discrete files
                  String filename = stubRoot + ".nativeReg";
                  BufferedReader br =
                      new BufferedReader(new FileReader(filename));
                  String nfunc;
                  while ((nfunc = br.readLine()) != null) {
                      emitter.addNativeRegistration(nfunc);
                  }
              } else {
                  emitter.emitCode(cfunc, s);
              }
          }
      }
  
      public static void main(String[] args) throws Exception {
          int aidx = 0;
          while ((aidx < args.length) && (args[aidx].charAt(0) == '-')) {
              switch (args[aidx].charAt(1)) {
              default:
                  System.err.println("Unknown flag: " + args[aidx]);
                  System.exit(1);
              }
  
              aidx++;
          }
  
          BufferedReader checksReader =
              new BufferedReader(new FileReader("specs/egl/checks.spec"));
          ParameterChecker checker = new ParameterChecker(checksReader);
  
  
          for(String suffix: new String[] {"EGL14", "EGL15", "EGLExt"}) {
              BufferedReader specReader = new BufferedReader(new FileReader(
                      "specs/egl/" + suffix + ".spec"));
              String egljFilename = "android/opengl/" + suffix + ".java";
              String eglcFilename = "android_opengl_" + suffix + ".cpp";
              PrintStream egljStream =
                  new PrintStream(new FileOutputStream("out/" + egljFilename));
              PrintStream eglcStream =
                  new PrintStream(new FileOutputStream("out/" + eglcFilename));
              copy("stubs/egl/" + suffix + "Header.java-if", egljStream);
              copy("stubs/egl/" + suffix + "cHeader.cpp", eglcStream);
              EGLCodeEmitter emitter = new EGLCodeEmitter(
                      "android/opengl/" + suffix,
                      checker, egljStream, eglcStream);
              emit(emitter, specReader, egljStream, eglcStream);
              emitter.emitNativeRegistration(
                      "register_android_opengl_jni_" + suffix);
              egljStream.println("}");
              egljStream.close();
              eglcStream.close();
          }
      }
  }
  