63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
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/*
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* Copyright 2016 Huy Cuong Nguyen
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* Copyright 2016 ZXing authors
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*/
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// SPDX-License-Identifier: Apache-2.0
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#include "ODEAN13Writer.h"
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#include "ODUPCEANCommon.h"
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#include "ODWriterHelper.h"
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#include "Utf.h"
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#include <array>
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#include <vector>
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namespace ZXing::OneD {
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static const int FIRST_DIGIT_ENCODINGS[] = {
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0x00, 0x0B, 0x0D, 0xE, 0x13, 0x19, 0x1C, 0x15, 0x16, 0x1A
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};
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static const int CODE_WIDTH = 3 + // start guard
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(7 * 6) + // left bars
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5 + // middle guard
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(7 * 6) + // right bars
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3; // end guard
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BitMatrix
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EAN13Writer::encode(const std::wstring& contents, int width, int height) const
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{
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auto digits = UPCEANCommon::DigitString2IntArray<13>(contents);
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int parities = FIRST_DIGIT_ENCODINGS[digits[0]];
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std::vector<bool> result(CODE_WIDTH, false);
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int pos = 0;
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pos += WriterHelper::AppendPattern(result, pos, UPCEANCommon::START_END_PATTERN, true);
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// See {@link #EAN13Reader} for a description of how the first digit & left bars are encoded
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for (int i = 1; i <= 6; i++) {
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int digit = digits[i];
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if ((parities >> (6 - i) & 1) == 1) {
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digit += 10;
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}
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pos += WriterHelper::AppendPattern(result, pos, UPCEANCommon::L_AND_G_PATTERNS[digit], false);
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}
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pos += WriterHelper::AppendPattern(result, pos, UPCEANCommon::MIDDLE_PATTERN, false);
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for (int i = 7; i <= 12; i++) {
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pos += WriterHelper::AppendPattern(result, pos, UPCEANCommon::L_PATTERNS[digits[i]], true);
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}
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WriterHelper::AppendPattern(result, pos, UPCEANCommon::START_END_PATTERN, true);
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return WriterHelper::RenderResult(result, width, height, _sidesMargin >= 0 ? _sidesMargin : 9);
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}
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BitMatrix EAN13Writer::encode(const std::string& contents, int width, int height) const
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{
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return encode(FromUtf8(contents), width, height);
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}
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} // namespace ZXing::OneD
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