Android Open Source - qrcode-android Decode Format Manager

From Project

Back to project page qrcode-android.
License

The source code is released under:
MIT License
If you think the Android project qrcode-android listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

/*
 * Copyright (C) 2010 ZXing authors//from  www .ja v  a2s  .  c  om
 *
 * 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.client.android;

import android.content.Intent;
import android.net.Uri;
import com.google.zxing.BarcodeFormat;

import java.util.Arrays;
import java.util.Collection;
import java.util.EnumSet;
import java.util.List;
import java.util.regex.Pattern;

final class DecodeFormatManager
{

    private static final Pattern COMMA_PATTERN = Pattern.compile(",");

    static final Collection<BarcodeFormat> PRODUCT_FORMATS;
    static final Collection<BarcodeFormat> ONE_D_FORMATS;
    static final Collection<BarcodeFormat> QR_CODE_FORMATS = EnumSet.of(BarcodeFormat.QR_CODE);
    static final Collection<BarcodeFormat> DATA_MATRIX_FORMATS = EnumSet.of(BarcodeFormat.DATA_MATRIX);

    static
    {
        PRODUCT_FORMATS = EnumSet.of(BarcodeFormat.UPC_A,
                                     BarcodeFormat.UPC_E,
                                     BarcodeFormat.EAN_13,
                                     BarcodeFormat.EAN_8,
                                     BarcodeFormat.RSS_14,
                                     BarcodeFormat.RSS_EXPANDED);
        ONE_D_FORMATS = EnumSet.of(BarcodeFormat.CODE_39,
                                   BarcodeFormat.CODE_93,
                                   BarcodeFormat.CODE_128,
                                   BarcodeFormat.ITF,
                                   BarcodeFormat.CODABAR);
        ONE_D_FORMATS.addAll(PRODUCT_FORMATS);
    }

    private DecodeFormatManager()
    {
    }

    static Collection<BarcodeFormat> parseDecodeFormats(Intent intent)
    {
        List<String> scanFormats = null;
        String scanFormatsString = intent.getStringExtra(Intents.Scan.FORMATS);
        if (scanFormatsString != null)
        {
            scanFormats = Arrays.asList(COMMA_PATTERN.split(scanFormatsString));
        }
        return parseDecodeFormats(scanFormats, intent.getStringExtra(Intents.Scan.MODE));
    }

    static Collection<BarcodeFormat> parseDecodeFormats(Uri inputUri)
    {
        List<String> formats = inputUri.getQueryParameters(Intents.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 Collection<BarcodeFormat> parseDecodeFormats(Iterable<String> scanFormats,
                                                                String decodeMode)
    {
        if (scanFormats != null)
        {
            Collection<BarcodeFormat> formats = EnumSet.noneOf(BarcodeFormat.class);
            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;
    }

}
Java Source Code List
