com.querydsl.codegen.utils.MemJavaFileObject Maven / Gradle / Ivy

Go to download
/*
 * Copyright 2010, Mysema Ltd
 *
 * 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 com.querydsl.codegen.utils;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import javax.tools.SimpleJavaFileObject;

/**
 * MemJavaFileObject defines an in memory compiled Java file
 *
 * @author tiwe
 */
public class MemJavaFileObject extends SimpleJavaFileObject {

  private ByteArrayOutputStream baos;

  private final String name;

  public MemJavaFileObject(String urlPrefix, String name, Kind kind) {
    super(URI.create(urlPrefix + name + kind.extension), kind);
    this.name = name;
  }

  @Override
  public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
    if (baos == null) {
      throw new FileNotFoundException(name);
    }
    return new String(baos.toByteArray(), StandardCharsets.UTF_8);
  }

  @Override
  public String getName() {
    return name;
  }

  public byte[] getByteArray() {
    return baos.toByteArray();
  }

  @Override
  public InputStream openInputStream() throws IOException {
    if (baos == null) {
      throw new FileNotFoundException(name);
    }
    return new ByteArrayInputStream(baos.toByteArray());
  }

  @Override
  public OutputStream openOutputStream() throws IOException {
    if (baos == null) {
      baos = new ByteArrayOutputStream();
    }
    return baos;
  }
}