/// <summary>
/// </summary>
/// <returns>
/// a byte array of horizontal pixels (false = white, true = black)
/// </returns>
public override bool[] encode(String contents)
{
int length = contents.Length;
switch (length)
{
case 7:
// No check digit present, calculate it and add it
var check = UPCEANReader.getStandardUPCEANChecksum(contents);
if (check == null)
{
throw new ArgumentException("Checksum can't be calculated");
}
contents += check.Value;
break;
case 8:
try
{
if (!UPCEANReader.checkStandardUPCEANChecksum(contents))
{
throw new ArgumentException("Contents do not pass checksum");
}
}
catch (FormatException ignored)
{
throw new ArgumentException("Illegal contents", ignored);
}
break;
default:
throw new ArgumentException("Requested contents should be 7 (without checksum digit) or 8 digits long, but got " + contents.Length);
}
checkNumeric(contents);
var result = new bool[CODE_WIDTH];
int pos = 0;
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
for (int i = 0; i <= 3; i++)
{
int digit = Int32.Parse(contents.Substring(i, 1));
pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], false);
}
pos += appendPattern(result, pos, UPCEANReader.MIDDLE_PATTERN, false);
for (int i = 4; i <= 7; i++)
{
int digit = Int32.Parse(contents.Substring(i, 1));
pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], true);
}
appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
return(result);
}
/// <summary>
/// Encode the contents to byte array expression of one-dimensional barcode.
/// Start code and end code should be included in result, and side margins should not be included.
/// <returns>a {@code boolean[]} of horizontal pixels (false = white, true = black)</returns>
/// </summary>
/// <param name="contents"></param>
/// <returns></returns>
override public bool[] encode(String contents)
{
if (contents.Length < 12 || contents.Length > 13)
{
throw new ArgumentException(
"Requested contents should be 12 (without checksum digit) or 13 digits long, but got " + contents.Length);
}
foreach (var ch in contents)
{
if (!Char.IsDigit(ch))
{
throw new ArgumentException("Requested contents should only contain digits, but got '" + ch + "'");
}
}
if (contents.Length == 12)
{
contents = CalculateChecksumDigitModulo10(contents);
}
else
{
if (!UPCEANReader.checkStandardUPCEANChecksum(contents))
{
throw new ArgumentException("Contents do not pass checksum");
}
}
int firstDigit = Int32.Parse(contents.Substring(0, 1));
int parities = EAN13Reader.FIRST_DIGIT_ENCODINGS[firstDigit];
var result = new bool[CODE_WIDTH];
int pos = 0;
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
// See {@link #EAN13Reader} for a description of how the first digit & left bars are encoded
for (int i = 1; i <= 6; i++)
{
int digit = Int32.Parse(contents.Substring(i, 1));
if ((parities >> (6 - i) & 1) == 1)
{
digit += 10;
}
pos += appendPattern(result, pos, UPCEANReader.L_AND_G_PATTERNS[digit], false);
}
pos += appendPattern(result, pos, UPCEANReader.MIDDLE_PATTERN, false);
for (int i = 7; i <= 12; i++)
{
int digit = Int32.Parse(contents.Substring(i, 1));
pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], true);
}
appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
return(result);
}
int decodeMiddle(BitArray row, int[] startRange, StringBuilder resultString)
{
int[] counters = decodeMiddleCounters;
counters[0] = 0;
counters[1] = 0;
counters[2] = 0;
counters[3] = 0;
int end = row.Size;
int rowOffset = startRange[1];
int lgPatternFound = 0;
for (int x = 0; x < 5 && rowOffset < end; x++)
{
int bestMatch;
if (!UPCEANReader.decodeDigit(row, counters, rowOffset, UPCEANReader.L_AND_G_PATTERNS, out bestMatch))
{
return(-1);
}
resultString.Append((char)('0' + bestMatch % 10));
foreach (int counter in counters)
{
rowOffset += counter;
}
if (bestMatch >= 10)
{
lgPatternFound |= 1 << (4 - x);
}
if (x != 4)
{
// Read off separator if not last
rowOffset = row.getNextSet(rowOffset);
rowOffset = row.getNextUnset(rowOffset);
}
}
if (resultString.Length != 5)
{
return(-1);
}
int checkDigit;
if (!determineCheckDigit(lgPatternFound, out checkDigit))
{
return(-1);
}
if (extensionChecksum(resultString.ToString()) != checkDigit)
{
return(-1);
}
return(rowOffset);
}
override public Result decodeRow(int rowNumber,
BitArray row,
Hashtable hints)
{
// Compute this location once and reuse it on multiple implementations
int[] startGuardPattern = UPCEANReader.findStartGuardPattern(row);
if (startGuardPattern == null)
{
return(null);
}
foreach (UPCEANReader reader in readers)
{
Result result = reader.decodeRow(rowNumber, row, startGuardPattern, hints);
if (result == null)
{
continue;
}
// Special case: a 12-digit code encoded in UPC-A is identical to a "0"
// followed by those 12 digits encoded as EAN-13. Each will recognize such a code,
// UPC-A as a 12-digit string and EAN-13 as a 13-digit string starting with "0".
// Individually these are correct and their readers will both read such a code
// and correctly call it EAN-13, or UPC-A, respectively.
//
// In this case, if we've been looking for both types, we'd like to call it
// a UPC-A code. But for efficiency we only run the EAN-13 decoder to also read
// UPC-A. So we special case it here, and convert an EAN-13 result to a UPC-A
// result if appropriate.
//
// But, don't return UPC-A if UPC-A was not a requested format!
bool ean13MayBeUPCA =
result.BarcodeFormat == BarcodeFormat.EAN_13 &&
result.Text[0] == '0';
var possibleFormats =
hints == null || !hints.Contains(DecodeHintType.POSSIBLE_FORMATS) ? null : (ArrayList)hints[DecodeHintType.POSSIBLE_FORMATS];
bool canReturnUPCA = possibleFormats == null || possibleFormats.Contains(BarcodeFormat.UPC_A);
if (ean13MayBeUPCA && canReturnUPCA)
{
// Transfer the metdata across
var resultUPCA = new Result(result.Text.Substring(1),
result.RawBytes,
result.ResultPoints,
BarcodeFormat.UPC_A);
resultUPCA.putAllMetadata(result.ResultMetadata);
return(resultUPCA);
}
return(result);
}
return(null);
}
internal Result decodeRow(int rowNumber, BitArray row, int rowOffset)
{
int[] extensionStartRange = UPCEANReader.findGuardPattern(row, rowOffset, false, EXTENSION_START_PATTERN);
if (extensionStartRange == null)
{
return(null);
}
var result = fiveSupport.decodeRow(rowNumber, row, extensionStartRange);
if (result == null)
{
result = twoSupport.decodeRow(rowNumber, row, extensionStartRange);
}
return(result);
}
int decodeMiddle(BitArray row, int[] startRange, StringBuilder resultString)
{
int[] counters = decodeMiddleCounters;
counters[0] = 0;
counters[1] = 0;
counters[2] = 0;
counters[3] = 0;
int end = row.Size;
int rowOffset = startRange[1];
int checkParity = 0;
for (int x = 0; x < 2 && rowOffset < end; x++)
{
int bestMatch;
if (!UPCEANReader.decodeDigit(row, counters, rowOffset, UPCEANReader.L_AND_G_PATTERNS, out bestMatch))
{
return(-1);
}
resultString.Append((char)('0' + bestMatch % 10));
foreach (int counter in counters)
{
rowOffset += counter;
}
if (bestMatch >= 10)
{
checkParity |= 1 << (1 - x);
}
if (x != 1)
{
// Read off separator if not last
rowOffset = row.getNextSet(rowOffset);
rowOffset = row.getNextUnset(rowOffset);
}
}
if (resultString.Length != 2)
{
return(-1);
}
if (int.Parse(resultString.ToString()) % 4 != checkParity)
{
return(-1);
}
return(rowOffset);
}
public override bool[] encode(String contents)
{
int length = contents.Length;
switch (length)
{
case 7:
// No check digit present, calculate it and add it
var check = UPCEANReader.getStandardUPCEANChecksum(UPCEReader.convertUPCEtoUPCA(contents));
if (check == null)
{
throw new ArgumentException("Checksum can't be calculated");
}
contents += check.Value;
break;
case 8:
try
{
if (!UPCEANReader.checkStandardUPCEANChecksum(contents))
{
throw new ArgumentException("Contents do not pass checksum");
}
}
catch (FormatException ignored)
{
throw new ArgumentException("Illegal contents", ignored);
}
break;
default:
throw new ArgumentException("Requested contents should be 8 digits long, but got " + length);
}
checkNumeric(contents);
int firstDigit = int.Parse(contents.Substring(0, 1));
if (firstDigit != 0 && firstDigit != 1)
{
throw new ArgumentException("Number system must be 0 or 1");
}
var checkDigit = int.Parse(contents.Substring(7, 1));
var parities = UPCEReader.NUMSYS_AND_CHECK_DIGIT_PATTERNS[firstDigit][checkDigit];
var result = new bool[CODE_WIDTH];
var pos = 0;
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
for (var i = 1; i <= 6; i++)
{
var digit = int.Parse(contents.Substring(i, 1));
if ((parities >> (6 - i) & 1) == 1)
{
digit += 10;
}
pos += appendPattern(result, pos, UPCEANReader.L_AND_G_PATTERNS[digit], false);
}
appendPattern(result, pos, UPCEANReader.END_PATTERN, false);
return(result);
}
/// <summary>
/// Encode the contents to byte array expression of one-dimensional barcode.
/// Start code and end code should be included in result, and side margins should not be included.
/// <returns>a {@code boolean[]} of horizontal pixels (false = white, true = black)</returns>
/// </summary>
/// <param name="contents"></param>
/// <returns></returns>
public override bool[] encode(String contents)
{
int length = contents.Length;
switch (length)
{
case 12:
// No check digit present, calculate it and add it
var check = UPCEANReader.getStandardUPCEANChecksum(contents);
if (check == null)
{
throw new ArgumentException("Checksum can't be calculated");
}
contents += check.Value;
break;
case 13:
try
{
if (!UPCEANReader.checkStandardUPCEANChecksum(contents))
{
throw new ArgumentException("Contents do not pass checksum");
}
}
catch (FormatException ignored)
{
throw new ArgumentException("Illegal contents", ignored);
}
break;
default:
throw new ArgumentException("Requested contents should be 12 (without checksum digit) or 13 digits long, but got " + contents.Length);
}
int firstDigit = Int32.Parse(contents.Substring(0, 1));
int parities = EAN13Reader.FIRST_DIGIT_ENCODINGS[firstDigit];
var result = new bool[CODE_WIDTH];
int pos = 0;
pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
// See EAN13Reader for a description of how the first digit & left bars are encoded
for (int i = 1; i <= 6; i++)
{
int digit = Int32.Parse(contents.Substring(i, 1));
if ((parities >> (6 - i) & 1) == 1)
{
digit += 10;
}
pos += appendPattern(result, pos, UPCEANReader.L_AND_G_PATTERNS[digit], false);
}
pos += appendPattern(result, pos, UPCEANReader.MIDDLE_PATTERN, false);
for (int i = 7; i <= 12; i++)
{
int digit = Int32.Parse(contents.Substring(i, 1));
pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], true);
}
appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
return(result);
}
