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/*
* 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.
*/
/*
* These authors would like to acknowledge the Spanish Ministry of Industry,
* Tourism and Trade, for the support in the project TSI020301-2008-2
* "PIRAmIDE: Personalizable Interactions with Resources on AmI-enabled
* Mobile Dynamic Environments", led by Treelogic
* ( http://www.treelogic.com/ ):
*
* http://www.piramidepse.com/
*/
package com.google.zxing.client.result;
import java.util.HashMap;
import java.util.Map;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
/**
* Parses strings of digits that represent a RSS Extended code.
*
* @author Antonio Manuel Benjumea Conde, Servinform, S.A.
* @author Agustín Delgado, Servinform, S.A.
*/
public final class ExpandedProductResultParser extends ResultParser {
@Override
public ExpandedProductParsedResult parse(Result result) {
BarcodeFormat format = result.getBarcodeFormat();
if (format != BarcodeFormat.RSS_EXPANDED) {
// ExtendedProductParsedResult NOT created. Not a RSS Expanded barcode
return null;
}
String rawText = getMassagedText(result);
String productID = null;
String sscc = null;
String lotNumber = null;
String productionDate = null;
String packagingDate = null;
String bestBeforeDate = null;
String expirationDate = null;
String weight = null;
String weightType = null;
String weightIncrement = null;
String price = null;
String priceIncrement = null;
String priceCurrency = null;
Map uncommonAIs = new HashMap<>();
int i = 0;
while (i < rawText.length()) {
String ai = findAIvalue(i, rawText);
if (ai == null) {
// Error. Code doesn't match with RSS expanded pattern
// ExtendedProductParsedResult NOT created. Not match with RSS Expanded pattern
return null;
}
i += ai.length() + 2;
String value = findValue(i, rawText);
i += value.length();
switch (ai) {
case "00":
sscc = value;
break;
case "01":
productID = value;
break;
case "10":
lotNumber = value;
break;
case "11":
productionDate = value;
break;
case "13":
packagingDate = value;
break;
case "15":
bestBeforeDate = value;
break;
case "17":
expirationDate = value;
break;
case "3100":
case "3101":
case "3102":
case "3103":
case "3104":
case "3105":
case "3106":
case "3107":
case "3108":
case "3109":
weight = value;
weightType = ExpandedProductParsedResult.KILOGRAM;
weightIncrement = ai.substring(3);
break;
case "3200":
case "3201":
case "3202":
case "3203":
case "3204":
case "3205":
case "3206":
case "3207":
case "3208":
case "3209":
weight = value;
weightType = ExpandedProductParsedResult.POUND;
weightIncrement = ai.substring(3);
break;
case "3920":
case "3921":
case "3922":
case "3923":
price = value;
priceIncrement = ai.substring(3);
break;
case "3930":
case "3931":
case "3932":
case "3933":
if (value.length() < 4) {
// The value must have more of 3 symbols (3 for currency and
// 1 at least for the price)
// ExtendedProductParsedResult NOT created. Not match with RSS Expanded pattern
return null;
}
price = value.substring(3);
priceCurrency = value.substring(0, 3);
priceIncrement = ai.substring(3);
break;
default:
// No match with common AIs
uncommonAIs.put(ai, value);
break;
}
}
return new ExpandedProductParsedResult(rawText,
productID,
sscc,
lotNumber,
productionDate,
packagingDate,
bestBeforeDate,
expirationDate,
weight,
weightType,
weightIncrement,
price,
priceIncrement,
priceCurrency,
uncommonAIs);
}
private static String findAIvalue(int i, String rawText) {
char c = rawText.charAt(i);
// First character must be a open parenthesis.If not, ERROR
if (c != '(') {
return null;
}
CharSequence rawTextAux = rawText.substring(i + 1);
StringBuilder buf = new StringBuilder();
for (int index = 0; index < rawTextAux.length(); index++) {
char currentChar = rawTextAux.charAt(index);
if (currentChar == ')') {
return buf.toString();
}
if (currentChar < '0' || currentChar > '9') {
return null;
}
buf.append(currentChar);
}
return buf.toString();
}
private static String findValue(int i, String rawText) {
StringBuilder buf = new StringBuilder();
String rawTextAux = rawText.substring(i);
for (int index = 0; index < rawTextAux.length(); index++) {
char c = rawTextAux.charAt(index);
if (c == '(') {
// We look for a new AI. If it doesn't exist (ERROR), we continue
// with the iteration
if (findAIvalue(index, rawTextAux) != null) {
break;
}
buf.append('(');
} else {
buf.append(c);
}
}
return buf.toString();
}
}