com.igormaznitsa.jcp.utils.ResetablePrinter Maven / Gradle / Ivy

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Powerful multi-pass preprocessor to process directives situated in C-styled commentaries

There is a newer version: 7.1.2

/* 
 * Copyright 2014 Igor Maznitsa (http://www.igormaznitsa.com).
 *
 * 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.igormaznitsa.jcp.utils;

import java.io.CharArrayWriter;
import java.io.IOException;
import java.io.Writer;

import javax.annotation.Nonnull;

/**
 * The class implements a resetable char printer
 *
 * @author Igor Maznitsa ([email protected])
 */
public class ResetablePrinter {

  private final CharArrayWriter outStream;

  public ResetablePrinter(final int initialCapacity) {
    outStream = new CharArrayWriter(initialCapacity);
  }

  public boolean isEmpty() {
    return outStream.size() == 0;
  }

  public void writeBufferTo(@Nonnull final Writer writer) throws IOException {
    outStream.flush();
    writer.write(outStream.toCharArray());
    writer.flush();
  }

  public int getSize() {
    return outStream.size();
  }

  public void reset() {
    outStream.reset();
  }

  public void print(@Nonnull final String text) throws IOException {
    for (final char chr : text.toCharArray()) {
      outStream.write(chr);
    }
  }

  public void println(@Nonnull final String text) throws IOException {
    for (final char chr : text.toCharArray()) {
      outStream.write(chr);
    }
    outStream.write(PreprocessorUtils.LINE_END, 0, PreprocessorUtils.LINE_END.length());
  }
}