internal static System.String decode(sbyte[] bytes, Version version)
{
BitSource bits = new BitSource(bytes);
System.Text.StringBuilder result = new System.Text.StringBuilder();
Mode mode;
do
{
// While still another segment to read...
mode = Mode.forBits(bits.readBits(4)); // mode is encoded by 4 bits
if (!mode.Equals(Mode.TERMINATOR))
{
// How many characters will follow, encoded in this mode?
int count = bits.readBits(mode.getCharacterCountBits(version));
if (mode.Equals(Mode.NUMERIC))
{
decodeNumericSegment(bits, result, count);
}
else if (mode.Equals(Mode.ALPHANUMERIC))
{
decodeAlphanumericSegment(bits, result, count);
}
else if (mode.Equals(Mode.BYTE))
{
decodeByteSegment(bits, result, count);
}
else if (mode.Equals(Mode.KANJI))
{
decodeKanjiSegment(bits, result, count);
}
else
{
throw new ReaderException("Unsupported mode indicator");
}
}
}while (!mode.Equals(Mode.TERMINATOR));
// I thought it wasn't allowed to leave extra bytes after the terminator but it happens
/*
* int bitsLeft = bits.available();
* if (bitsLeft > 0) {
* if (bitsLeft > 6 || bits.readBits(bitsLeft) != 0) {
* throw new ReaderException("Excess bits or non-zero bits after terminator mode indicator");
* }
* }
*/
return(result.ToString());
}
internal static DecoderResult decode(sbyte[] bytes, Version version, ErrorCorrectionLevel ecLevel)
{
BitSource bits = new BitSource(bytes);
System.Text.StringBuilder result = new System.Text.StringBuilder(50);
CharacterSetECI currentCharacterSetECI = null;
bool fc1InEffect = false;
System.Collections.ArrayList byteSegments = System.Collections.ArrayList.Synchronized(new System.Collections.ArrayList(1));
Mode mode;
do
{
// While still another segment to read...
if (bits.available() < 4)
{
// OK, assume we're done. Really, a TERMINATOR mode should have been recorded here
mode = Mode.TERMINATOR;
}
else
{
try
{
mode = Mode.forBits(bits.readBits(4)); // mode is encoded by 4 bits
}
catch (System.ArgumentException iae)
{
throw ReaderException.Instance;
}
}
if (!mode.Equals(Mode.TERMINATOR))
{
if (mode.Equals(Mode.FNC1_FIRST_POSITION) || mode.Equals(Mode.FNC1_SECOND_POSITION))
{
// We do little with FNC1 except alter the parsed result a bit according to the spec
fc1InEffect = true;
}
else if (mode.Equals(Mode.STRUCTURED_APPEND))
{
// not really supported; all we do is ignore it
// Read next 8 bits (symbol sequence #) and 8 bits (parity data), then continue
bits.readBits(16);
}
else if (mode.Equals(Mode.ECI))
{
// Count doesn't apply to ECI
int value_Renamed = parseECIValue(bits);
currentCharacterSetECI = CharacterSetECI.getCharacterSetECIByValue(value_Renamed);
if (currentCharacterSetECI == null)
{
throw ReaderException.Instance;
}
}
else
{
// How many characters will follow, encoded in this mode?
int count = bits.readBits(mode.getCharacterCountBits(version));
if (mode.Equals(Mode.NUMERIC))
{
decodeNumericSegment(bits, result, count);
}
else if (mode.Equals(Mode.ALPHANUMERIC))
{
decodeAlphanumericSegment(bits, result, count, fc1InEffect);
}
else if (mode.Equals(Mode.BYTE))
{
decodeByteSegment(bits, result, count, currentCharacterSetECI, byteSegments);
}
else if (mode.Equals(Mode.KANJI))
{
decodeKanjiSegment(bits, result, count);
}
else
{
throw ReaderException.Instance;
}
}
}
}while (!mode.Equals(Mode.TERMINATOR));
return(new DecoderResult(bytes, result.ToString(), (byteSegments.Count == 0)?null:byteSegments, ecLevel));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: static com.google.zxing.common.DecoderResult decode(byte[] bytes, Version version, ErrorCorrectionLevel ecLevel, java.util.Map<com.google.zxing.DecodeHintType,?> hints) throws com.google.zxing.FormatException
internal static DecoderResult decode(sbyte[] bytes, Version version, ErrorCorrectionLevel ecLevel, IDictionary <DecodeHintType, object> hints)
{
BitSource bits = new BitSource(bytes);
StringBuilder result = new StringBuilder(50);
IList <sbyte[]> byteSegments = new List <sbyte[]>(1);
try
{
CharacterSetECI currentCharacterSetECI = null;
bool fc1InEffect = false;
Mode mode;
do
{
// While still another segment to read...
if (bits.available() < 4)
{
// OK, assume we're done. Really, a TERMINATOR mode should have been recorded here
mode = Mode.TERMINATOR;
}
else
{
mode = Mode.forBits(bits.readBits(4)); // mode is encoded by 4 bits
}
if (mode != Mode.TERMINATOR)
{
if (mode == Mode.FNC1_FIRST_POSITION || mode == Mode.FNC1_SECOND_POSITION)
{
// We do little with FNC1 except alter the parsed result a bit according to the spec
fc1InEffect = true;
}
else if (mode == Mode.STRUCTURED_APPEND)
{
if (bits.available() < 16)
{
throw FormatException.FormatInstance;
}
// not really supported; all we do is ignore it
// Read next 8 bits (symbol sequence #) and 8 bits (parity data), then continue
bits.readBits(16);
}
else if (mode == Mode.ECI)
{
// Count doesn't apply to ECI
int value = parseECIValue(bits);
currentCharacterSetECI = CharacterSetECI.getCharacterSetECIByValue(value);
if (currentCharacterSetECI == null)
{
throw FormatException.FormatInstance;
}
}
else
{
// First handle Hanzi mode which does not start with character count
if (mode == Mode.HANZI)
{
//chinese mode contains a sub set indicator right after mode indicator
int subset = bits.readBits(4);
int countHanzi = bits.readBits(mode.getCharacterCountBits(version));
if (subset == GB2312_SUBSET)
{
decodeHanziSegment(bits, result, countHanzi);
}
}
else
{
// "Normal" QR code modes:
// How many characters will follow, encoded in this mode?
int count = bits.readBits(mode.getCharacterCountBits(version));
if (mode == Mode.NUMERIC)
{
decodeNumericSegment(bits, result, count);
}
else if (mode == Mode.ALPHANUMERIC)
{
decodeAlphanumericSegment(bits, result, count, fc1InEffect);
}
else if (mode == Mode.BYTE)
{
decodeByteSegment(bits, result, count, currentCharacterSetECI, byteSegments, hints);
}
else if (mode == Mode.KANJI)
{
decodeKanjiSegment(bits, result, count);
}
else
{
throw FormatException.FormatInstance;
}
}
}
}
} while (mode != Mode.TERMINATOR);
}
catch (System.ArgumentException iae)
{
// from readBits() calls
throw FormatException.FormatInstance;
}
return(new DecoderResult(bytes, result.ToString(), byteSegments.Count == 0 ? null : byteSegments, ecLevel == null ? null : ecLevel.ToString()));
}
