/*
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* Copyright 2012 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "ZXExpandedProductResultParser.h"
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#import "ZXExpandedProductParsedResult.h"
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#import "ZXResult.h"
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@implementation ZXExpandedProductResultParser
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- (ZXParsedResult *)parse:(ZXResult *)result {
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ZXBarcodeFormat format = [result barcodeFormat];
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if (kBarcodeFormatRSSExpanded != format) {
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// ExtendedProductParsedResult NOT created. Not a RSS Expanded barcode
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return nil;
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}
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NSString *rawText = [ZXResultParser massagedText:result];
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NSString *productID = nil;
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NSString *sscc = nil;
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NSString *lotNumber = nil;
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NSString *productionDate = nil;
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NSString *packagingDate = nil;
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NSString *bestBeforeDate = nil;
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NSString *expirationDate = nil;
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NSString *weight = nil;
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NSString *weightType = nil;
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NSString *weightIncrement = nil;
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NSString *price = nil;
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NSString *priceIncrement = nil;
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NSString *priceCurrency = nil;
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NSMutableDictionary *uncommonAIs = [NSMutableDictionary dictionary];
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int i = 0;
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while (i < [rawText length]) {
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NSString *ai = [self findAIvalue:i rawText:rawText];
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if (ai == nil) {
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// Error. Code doesn't match with RSS expanded pattern
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// ExtendedProductParsedResult NOT created. Not match with RSS Expanded pattern
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return nil;
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}
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i += [ai length] + 2;
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NSString *value = [self findValue:i rawText:rawText];
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i += [value length];
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if ([@"00" isEqualToString:ai]) {
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sscc = value;
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} else if ([@"01" isEqualToString:ai]) {
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productID = value;
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} else if ([@"10" isEqualToString:ai]) {
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lotNumber = value;
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} else if ([@"11" isEqualToString:ai]) {
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productionDate = value;
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} else if ([@"13" isEqualToString:ai]) {
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packagingDate = value;
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} else if ([@"15" isEqualToString:ai]) {
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bestBeforeDate = value;
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} else if ([@"17" isEqualToString:ai]) {
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expirationDate = value;
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} else if ([@"3100" isEqualToString:ai] || [@"3101" isEqualToString:ai] || [@"3102" isEqualToString:ai] || [@"3103" isEqualToString:ai] || [@"3104" isEqualToString:ai] || [@"3105" isEqualToString:ai] || [@"3106" isEqualToString:ai] || [@"3107" isEqualToString:ai] || [@"3108" isEqualToString:ai] || [@"3109" isEqualToString:ai]) {
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weight = value;
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weightType = ZX_KILOGRAM;
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weightIncrement = [ai substringFromIndex:3];
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} else if ([@"3200" isEqualToString:ai] || [@"3201" isEqualToString:ai] || [@"3202" isEqualToString:ai] || [@"3203" isEqualToString:ai] || [@"3204" isEqualToString:ai] || [@"3205" isEqualToString:ai] || [@"3206" isEqualToString:ai] || [@"3207" isEqualToString:ai] || [@"3208" isEqualToString:ai] || [@"3209" isEqualToString:ai]) {
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weight = value;
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weightType = ZX_POUND;
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weightIncrement = [ai substringFromIndex:3];
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} else if ([@"3920" isEqualToString:ai] || [@"3921" isEqualToString:ai] || [@"3922" isEqualToString:ai] || [@"3923" isEqualToString:ai]) {
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price = value;
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priceIncrement = [ai substringFromIndex:3];
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} else if ([@"3930" isEqualToString:ai] || [@"3931" isEqualToString:ai] || [@"3932" isEqualToString:ai] || [@"3933" isEqualToString:ai]) {
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if ([value length] < 4) {
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// The value must have more of 3 symbols (3 for currency and
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// 1 at least for the price)
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// ExtendedProductParsedResult NOT created. Not match with RSS Expanded pattern
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return nil;
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}
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price = [value substringFromIndex:3];
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priceCurrency = [value substringToIndex:3];
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priceIncrement = [ai substringFromIndex:3];
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} else {
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// No match with common AIs
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uncommonAIs[ai] = value;
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}
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}
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return [ZXExpandedProductParsedResult expandedProductParsedResultWithRawText:rawText
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productID:productID
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sscc:sscc
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lotNumber:lotNumber
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productionDate:productionDate
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packagingDate:packagingDate
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bestBeforeDate:bestBeforeDate
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expirationDate:expirationDate
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weight:weight
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weightType:weightType
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weightIncrement:weightIncrement
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price:price
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priceIncrement:priceIncrement
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priceCurrency:priceCurrency
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uncommonAIs:uncommonAIs];
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}
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- (NSString *)findAIvalue:(int)i rawText:(NSString *)rawText {
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unichar c = [rawText characterAtIndex:i];
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// First character must be a open parenthesis.If not, ERROR
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if (c != '(') {
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return nil;
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}
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NSString *rawTextAux = [rawText substringFromIndex:i + 1];
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NSMutableString *buf = [NSMutableString string];
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for (int index = 0; index < [rawTextAux length]; index++) {
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unichar currentChar = [rawTextAux characterAtIndex:index];
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if (currentChar == ')') {
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return buf;
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} else if (currentChar >= '0' && currentChar <= '9') {
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[buf appendFormat:@"%C", currentChar];
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} else {
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return nil;
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}
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}
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return buf;
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}
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- (NSString *)findValue:(int)i rawText:(NSString *)rawText {
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NSMutableString *buf = [NSMutableString string];
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NSString *rawTextAux = [rawText substringFromIndex:i];
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for (int index = 0; index < [rawTextAux length]; index++) {
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unichar c = [rawTextAux characterAtIndex:index];
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if (c == '(') {
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// We look for a new AI. If it doesn't exist (ERROR), we coninue
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// with the iteration
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if ([self findAIvalue:index rawText:rawTextAux] == nil) {
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[buf appendString:@"("];
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} else {
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break;
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}
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} else {
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[buf appendFormat:@"%C", c];
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}
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}
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return buf;
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}
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@end
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