/*
* 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 AgustÃn 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;
}
// Really neither of these should happen:
String rawText = getMassagedText(result);
if (rawText == null) {
// ExtendedProductParsedResult NOT created. Input text is NULL
return null;
}
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<String,String> uncommonAIs = new HashMap<String,String>();
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();
if ("00".equals(ai)) {
sscc = value;
} else if ("01".equals(ai)) {
productID = value;
} else if ("10".equals(ai)) {
lotNumber = value;
} else if ("11".equals(ai)) {
productionDate = value;
} else if ("13".equals(ai)) {
packagingDate = value;
} else if ("15".equals(ai)) {
bestBeforeDate = value;
} else if ("17".equals(ai)) {
expirationDate = value;
} else if ("3100".equals(ai) || "3101".equals(ai)
|| "3102".equals(ai) || "3103".equals(ai)
|| "3104".equals(ai) || "3105".equals(ai)
|| "3106".equals(ai) || "3107".equals(ai)
|| "3108".equals(ai) || "3109".equals(ai)) {
weight = value;
weightType = ExpandedProductParsedResult.KILOGRAM;
weightIncrement = ai.substring(3);
} else if ("3200".equals(ai) || "3201".equals(ai)
|| "3202".equals(ai) || "3203".equals(ai)
|| "3204".equals(ai) || "3205".equals(ai)
|| "3206".equals(ai) || "3207".equals(ai)
|| "3208".equals(ai) || "3209".equals(ai)) {
weight = value;
weightType = ExpandedProductParsedResult.POUND;
weightIncrement = ai.substring(3);
} else if ("3920".equals(ai) || "3921".equals(ai)
|| "3922".equals(ai) || "3923".equals(ai)) {
price = value;
priceIncrement = ai.substring(3);
} else if ("3930".equals(ai) || "3931".equals(ai)
|| "3932".equals(ai) || "3933".equals(ai)) {
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);
} else {
// No match with common AIs
uncommonAIs.put(ai, value);
}
}
return new ExpandedProductParsedResult(productID,
sscc,
lotNumber,
productionDate,
packagingDate,
bestBeforeDate,
expirationDate,
weight,
weightType,
weightIncrement,
price,
priceIncrement,
priceCurrency,
uncommonAIs);
}
private static String findAIvalue(int i, String rawText) {
StringBuilder buf = new StringBuilder();
char c = rawText.charAt(i);
// First character must be a open parenthesis.If not, ERROR
if (c != '(') {
return null;
}
String rawTextAux = rawText.substring(i + 1);
for (int index = 0; index < rawTextAux.length(); index++) {
char currentChar = rawTextAux.charAt(index);
if (currentChar == ')') {
return buf.toString();
} else if (currentChar >= '0' && currentChar <= '9') {
buf.append(currentChar);
} else {
return null;
}
}
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 coninue
// with the iteration
if (findAIvalue(index, rawTextAux) == null) {
buf.append('(');
} else {
break;
}
} else {
buf.append(c);
}
}
return buf.toString();
}
}