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

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/*
 * 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.IOException;
import java.io.Writer;
import java.net.URI;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;

/**
 * MemSourceFileObject defines a in-memory Java source file object
 *
 * @author tiwe
 */
public class MemSourceFileObject extends SimpleJavaFileObject {

  private static URI toUri(String fqname) {
    return URI.create("file:///" + fqname.replace(".", "/") + ".java");
  }

  private final StringBuilder contents;

  public MemSourceFileObject(String fullName) {
    super(toUri(fullName), JavaFileObject.Kind.SOURCE);
    contents = new StringBuilder(1000);
  }

  public MemSourceFileObject(String fullName, String content) {
    this(fullName);
    contents.append(content);
  }

  @Override
  public CharSequence getCharContent(boolean ignoreEncodingErrors) {
    return contents;
  }

  @Override
  public Writer openWriter() {
    return new Writer() {
      @Override
      public Writer append(CharSequence csq) throws IOException {
        contents.append(csq);
        return this;
      }

      @Override
      public void close() {}

      @Override
      public void flush() {}

      @Override
      public void write(char[] cbuf, int off, int len) throws IOException {
        contents.append(cbuf, off, len);
      }
    };
  }
}