/*
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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 "ZXAI01393xDecoder.h"
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#import "ZXBitArray.h"
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#import "ZXErrors.h"
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#import "ZXRSSExpandedDecodedInformation.h"
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#import "ZXRSSExpandedGeneralAppIdDecoder.h"
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@implementation ZXAI01393xDecoder
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const int ZX_AI01393xDecoder_HEADER_SIZE = 5 + 1 + 2;
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const int ZX_AI01393xDecoder_LAST_DIGIT_SIZE = 2;
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const int ZX_AI01393xDecoder_FIRST_THREE_DIGITS_SIZE = 10;
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- (NSString *)parseInformationWithError:(NSError **)error {
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if (self.information.size < ZX_AI01393xDecoder_HEADER_SIZE + ZX_AI01_GTIN_SIZE) {
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if (error) *error = ZXNotFoundErrorInstance();
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return nil;
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}
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NSMutableString *buf = [NSMutableString string];
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[self encodeCompressedGtin:buf currentPos:ZX_AI01393xDecoder_HEADER_SIZE];
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int lastAIdigit = [self.generalDecoder extractNumericValueFromBitArray:ZX_AI01393xDecoder_HEADER_SIZE + ZX_AI01_GTIN_SIZE
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bits:ZX_AI01393xDecoder_LAST_DIGIT_SIZE];
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[buf appendFormat:@"(393%d)", lastAIdigit];
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int firstThreeDigits = [self.generalDecoder extractNumericValueFromBitArray:ZX_AI01393xDecoder_HEADER_SIZE + ZX_AI01_GTIN_SIZE + ZX_AI01393xDecoder_LAST_DIGIT_SIZE
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bits:ZX_AI01393xDecoder_FIRST_THREE_DIGITS_SIZE];
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if (firstThreeDigits / 100 == 0) {
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[buf appendString:@"0"];
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}
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if (firstThreeDigits / 10 == 0) {
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[buf appendString:@"0"];
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}
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[buf appendFormat:@"%d", firstThreeDigits];
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ZXRSSExpandedDecodedInformation *generalInformation = [self.generalDecoder decodeGeneralPurposeField:ZX_AI01393xDecoder_HEADER_SIZE + ZX_AI01_GTIN_SIZE + ZX_AI01393xDecoder_LAST_DIGIT_SIZE + ZX_AI01393xDecoder_FIRST_THREE_DIGITS_SIZE
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remaining:nil];
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[buf appendString:generalInformation.theNewString];
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return buf;
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}
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@end
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