java/compiler/impl/src/com/intellij/compiler/impl/javaCompiler/FileObject.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.compiler.impl.javaCompiler;
  17
  18 import com.intellij.openapi.util.io.FileUtil;
  19 import org.jetbrains.annotations.NotNull;
  20
  21 import java.io.File;
  22 import java.io.FileNotFoundException;
  23 import java.io.IOException;
  24
  25 /**
  26  * @author cdr
  27  */
  28 public class FileObject {
  29   private static final byte[] NOT_LOADED = new byte[0];
  30
  31   private final File myFile;
  32   private final byte[] myContent;
  33
  34   public FileObject(@NotNull File file, @NotNull byte[] content) {
  35     myFile = file;
  36     myContent = content;
  37   }
  38
  39   public FileObject(File file) {
  40     myFile = file;
  41     myContent = NOT_LOADED;
  42   }
  43
  44   public File getFile() {
  45     return myFile;
  46   }
  47
  48   public byte[] getContent() throws IOException {
  49     if (myContent == NOT_LOADED) {
  50       return FileUtil.loadFileBytes(myFile);
  51     }
  52     return myContent;
  53   }
  54
  55   public void save() throws IOException {
  56     if (myContent == NOT_LOADED) {
  57       return; // already on disk
  58     }
  59     try {
  60       FileUtil.writeToFile(myFile, myContent);
  61     }
  62     catch (FileNotFoundException e) {
  63       FileUtil.createParentDirs(myFile);
  64       FileUtil.writeToFile(myFile, myContent);
  65     }
  66   }
  67
  68   @Override
  69   public String toString() {
  70     return getFile().toString();
  71   }
  72 }