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CSV, XLS and fixed parsers

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/*
 * Copyright 2013 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.way.io;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.List;

import br.com.objectos.way.core.io.Directory;

import com.google.common.io.Files;

/**
 * @author [email protected] (Marcio Endo)
 */
class WorkbookXlsApachePOI implements WorkbookXls {

  private final String name;

  private final List sheets;

  public WorkbookXlsApachePOI(String name, List sheets) {
    this.name = name;
    this.sheets = sheets;
  }

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

  @Override
  public byte[] toByteArray() throws IOException {
    POIWorkbook wb = new POIWorkbook();

    for (SheetXls sheet : sheets) {
      AbstractSheetXls poi = (AbstractSheetXls) sheet;
      poi.apachePOI(wb);
    }

    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    wb.write(stream);
    return stream.toByteArray();
  }

  @Override
  public File toFileAt(Directory dir) {
    return dir.fileAt(name);
  }

  @Override
  public void writeTo(Directory dir) throws IOException {
    File file = toFileAt(dir);
    byte[] bytes = toByteArray();
    Files.write(bytes, file);
  }

}