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barcode generation. simple.

There is a newer version: 2.4.0

/*
 * 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.barcode.i25;

import static com.google.common.collect.Lists.newArrayList;

import java.util.List;

import br.com.objectos.way.barcode.BarWidth;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;

/**
 * @author [email protected] (Edenir Norberto Anschau)
 */
class Pair {

  private final List widths;

  private Pair(List pair) {
    this.widths = pair;
  }

  public static List pairOf(int[] input) {
    List res = newArrayList();

    int limite = input.length;

    for (int i = 0; i < limite; i = i + 2) {
      int value1 = input[i];
      int value2 = input[i + 1];
      Pair pair = pairOf(value1, value2);
      res.add(pair);
    }

    return res;
  }

  @VisibleForTesting
  static Pair pairOf(int n1, int n2) {
    List ref1 = Digits.encode(n1);
    List ref2 = Digits.encode(n2);

    BarWidth[] barWdths = new BarWidth[10];
    barWdths[0] = ref1.get(0);
    barWdths[1] = ref2.get(0);
    barWdths[2] = ref1.get(1);
    barWdths[3] = ref2.get(1);
    barWdths[4] = ref1.get(2);
    barWdths[5] = ref2.get(2);
    barWdths[6] = ref1.get(3);
    barWdths[7] = ref2.get(3);
    barWdths[8] = ref1.get(4);
    barWdths[9] = ref2.get(4);

    List list = ImmutableList.copyOf(barWdths);

    return new Pair(list);
  }

  public List getWidths() {
    return widths;
  }

}