#include <zxing/ZXing.h>
#include <zxing/oned/UPCEReader.h>
#include <zxing/ReaderException.h>
using std::string;
using std::vector;
using zxing::Ref;
using zxing::String;
using zxing::oned::UPCEReader;
using zxing::BitArray;
#define VECTOR_INIT(v) v, v + sizeof(v)/sizeof(v[0])
namespace {
const int MIDDLE_END_PATTERN_[6] = {1, 1, 1, 1, 1, 1};
const vector<int> MIDDLE_END_PATTERN (VECTOR_INIT(MIDDLE_END_PATTERN_));
const int NUMSYS_AND_CHECK_DIGIT_PATTERNS[2][10] = {
{0x38, 0x34, 0x32, 0x31, 0x2C, 0x26, 0x23, 0x2A, 0x29, 0x25},
{0x07, 0x0B, 0x0D, 0x0E, 0x13, 0x19, 0x1C, 0x15, 0x16, 0x1A}
};
}
UPCEReader::UPCEReader() {
}
int UPCEReader::decodeMiddle(Ref<BitArray> row, Range const& startRange, string& result) {
vector<int>& counters (decodeMiddleCounters);
counters.clear();
counters.resize(4);
int end = row->getSize();
int rowOffset = startRange[1];
int lgPatternFound = 0;
for (int x = 0; x < 6 && rowOffset < end; x++) {
int bestMatch = decodeDigit(row, counters, rowOffset, L_AND_G_PATTERNS);
result.append(1, (byte) ('0' + bestMatch % 10));
for (int i = 0, e = counters.size(); i < e; i++) {
rowOffset += counters[i];
}
if (bestMatch >= 10) {
lgPatternFound |= 1 << (5 - x);
}
}
determineNumSysAndCheckDigit(result, lgPatternFound);
return rowOffset;
}
UPCEReader::Range UPCEReader::decodeEnd(Ref<BitArray> row, int endStart) {
return findGuardPattern(row, endStart, true, MIDDLE_END_PATTERN);
}
bool UPCEReader::checkChecksum(Ref<String> const& s){
return UPCEANReader::checkChecksum(convertUPCEtoUPCA(s));
}
bool UPCEReader::determineNumSysAndCheckDigit(std::string& resultString, int lgPatternFound) {
for (int numSys = 0; numSys <= 1; numSys++) {
for (int d = 0; d < 10; d++) {
if (lgPatternFound == NUMSYS_AND_CHECK_DIGIT_PATTERNS[numSys][d]) {
resultString.insert((size_t)0, (size_t)1, (byte) ('0' + numSys));
resultString.append(1, (byte) ('0' + d));
return true;
}
}
}
return false;
}
Ref<String> UPCEReader::convertUPCEtoUPCA(Ref<String> const& upce_) {
string const& upce(upce_->getText());
string result;
result.append(1, upce[0]);
char lastChar = upce[6];
switch (lastChar) {
case '0':
case '1':
case '2':
result.append(upce.substr(1,2));
result.append(1, lastChar);
result.append("0000");
result.append(upce.substr(3,3));
break;
case '3':
result.append(upce.substr(1,3));
result.append("00000");
result.append(upce.substr(4,2));
break;
case '4':
result.append(upce.substr(1,4));
result.append("00000");
result.append(1, upce[5]);
break;
default:
result.append(upce.substr(1,5));
result.append("0000");
result.append(1, lastChar);
break;
}
result.append(1, upce[7]);
return Ref<String>(new String(result));
}
zxing::BarcodeFormat UPCEReader::getBarcodeFormat() {
return BarcodeFormat::UPC_E;
}