content: /*
   * Copyright (C) 2010 ZXing authors
   *
   * 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.google.zxing.decoding;
  
  import android.content.Intent;
  import android.net.Uri;
  
  import com.google.zxing.BarcodeFormat;
  
  import java.util.Arrays;
  import java.util.List;
  import java.util.Vector;
  import java.util.regex.Pattern;
  
  final class DecodeFormatManager {
  
      private static final Pattern COMMA_PATTERN = Pattern.compile(",");
  
      static final Vector<BarcodeFormat> PRODUCT_FORMATS;
      static final Vector<BarcodeFormat> ONE_D_FORMATS;
      static final Vector<BarcodeFormat> QR_CODE_FORMATS;
      static final Vector<BarcodeFormat> DATA_MATRIX_FORMATS;
  
      static {
          PRODUCT_FORMATS = new Vector<BarcodeFormat>(5);
          PRODUCT_FORMATS.add(BarcodeFormat.UPC_A);
          PRODUCT_FORMATS.add(BarcodeFormat.UPC_E);
          PRODUCT_FORMATS.add(BarcodeFormat.EAN_13);
          PRODUCT_FORMATS.add(BarcodeFormat.EAN_8);
          ONE_D_FORMATS = new Vector<BarcodeFormat>(PRODUCT_FORMATS.size() + 4);
          ONE_D_FORMATS.addAll(PRODUCT_FORMATS);
          ONE_D_FORMATS.add(BarcodeFormat.CODE_39);
          ONE_D_FORMATS.add(BarcodeFormat.CODE_93);
          ONE_D_FORMATS.add(BarcodeFormat.CODE_128);
          ONE_D_FORMATS.add(BarcodeFormat.ITF);
          QR_CODE_FORMATS = new Vector<BarcodeFormat>(1);
          QR_CODE_FORMATS.add(BarcodeFormat.QR_CODE);
          DATA_MATRIX_FORMATS = new Vector<BarcodeFormat>(1);
          DATA_MATRIX_FORMATS.add(BarcodeFormat.DATA_MATRIX);
      }
  
      private DecodeFormatManager() {
      }
  
      static Vector<BarcodeFormat> parseDecodeFormats(Intent intent) {
          List<String> scanFormats = null;
          String scanFormatsString = intent.getStringExtra(Intents.Scan.SCAN_FORMATS);
          if (scanFormatsString != null) {
              scanFormats = Arrays.asList(COMMA_PATTERN.split(scanFormatsString));
          }
          return parseDecodeFormats(scanFormats, intent.getStringExtra(Intents.Scan.MODE));
      }
  
      static Vector<BarcodeFormat> parseDecodeFormats(Uri inputUri) {
          List<String> formats = inputUri.getQueryParameters(Intents.Scan.SCAN_FORMATS);
          if (formats != null && formats.size() == 1 && formats.get(0) != null) {
              formats = Arrays.asList(COMMA_PATTERN.split(formats.get(0)));
          }
          return parseDecodeFormats(formats, inputUri.getQueryParameter(Intents.Scan.MODE));
      }
  
      private static Vector<BarcodeFormat> parseDecodeFormats(Iterable<String> scanFormats,
                                                              String decodeMode) {
          if (scanFormats != null) {
              Vector<BarcodeFormat> formats = new Vector<BarcodeFormat>();
              try {
                  for (String format : scanFormats) {
                      formats.add(BarcodeFormat.valueOf(format));
                  }
                  return formats;
              } catch (IllegalArgumentException iae) {
                  // ignore it then
              }
          }
          if (decodeMode != null) {
              if (Intents.Scan.PRODUCT_MODE.equals(decodeMode)) {
                  return PRODUCT_FORMATS;
              }
              if (Intents.Scan.QR_CODE_MODE.equals(decodeMode)) {
                  return QR_CODE_FORMATS;
              }
              if (Intents.Scan.DATA_MATRIX_MODE.equals(decodeMode)) {
                  return DATA_MATRIX_FORMATS;
              }
              if (Intents.Scan.ONE_D_MODE.equals(decodeMode)) {
                  return ONE_D_FORMATS;
              }
          }
          return null;
      }
  
  }
  