/// <summary>
/// Writes the given text encoded using the specified Restricted Alphabet Encoding.
/// </summary>
/// <param name="text">Text to write.</param>
/// <param name="alphabetTableIndex">Index of restricted alphabet</param>
/// <exception cref="ArgumentException">A Restricted Alphabet cannot be found for the specified index.</exception>
/// <exception cref="InvalidOperationException">The <see cref="WriteState"/> is invalid for this operation.</exception>
/// <exception cref="IndexOutOfRangeException">Index must be between 1 and 256</exception>
public void WriteRestrictedAlphabetString(string text, int alphabetTableIndex)
{
try
{
if (string.IsNullOrEmpty(text))
{
return;
}
if (alphabetTableIndex < FIConsts.ENCODING_TABLE_MIN || alphabetTableIndex > FIConsts.ENCODING_TABLE_MAX)
{
throw new IndexOutOfRangeException("alphabetTableIndex");
}
ValidateState(FIItemType.Content);
FIRestrictedAlphabet alphabet = _internalWriter.Vocabulary.RestrictedAlphabet(alphabetTableIndex);
if (alphabet == null)
{
throw new ArgumentException("Index out of range.");
}
_internalWriter.WriteEncodedData(alphabet, text);
UpdateState(FIItemType.Content);
}
catch (Exception ex)
{
_state = FIState.Error;
throw ex;
}
}
internal FIRestrictedAlphabet Alphabet(int fiTableIndex)
{
FIRestrictedAlphabet alphabet = null;
if (fiTableIndex > 0)
{
if (fiTableIndex < EXTENDED_RESTRICTED_ALPHABET_START)
{
if (fiTableIndex <= BUILT_IN_RESTRICTED_ALPHABET_COUNT)
{
// index - 1 to move from FI table index to list index
alphabet = _restrictedAlphabets[fiTableIndex - 1];
}
}
else if (fiTableIndex < EXTENDED_RESTRICTED_ALPHABET_MAX)
{
// to move from FI table index to list index
int realIndex = fiTableIndex - (EXTENDED_RESTRICTED_ALPHABET_START - BUILT_IN_RESTRICTED_ALPHABET_COUNT);
if (realIndex < _restrictedAlphabets.Length)
{
alphabet = _restrictedAlphabets[realIndex];
}
}
}
return(alphabet);
}
internal FIRestrictedAlphabetManager()
{
// initialize array
_restrictedAlphabets = new FIRestrictedAlphabet[GROW_ARRAY_SIZE];
_restrictedAlphabetTop = 0;
// Add built in restricted alphabets
FIRestrictedAlphabet alphabet = new FIRestrictedAlphabet(RESTRICTED_ALPHABET_VALUES_NUMERIC);
alphabet.TableIndex = RESTRICTED_ALPHABET_NUMERIC;
_restrictedAlphabets[_restrictedAlphabetTop] = alphabet;
alphabet = new FIRestrictedAlphabet(RESTRICTED_ALPHABET_VALUES_DATE_TIME);
alphabet.TableIndex = RESTRICTED_ALPHABET_DATE_TIME;
_restrictedAlphabets[++_restrictedAlphabetTop] = alphabet;
}
internal int Add(FIRestrictedAlphabet alphabet)
{
// set table index
alphabet.TableIndex = _restrictedAlphabets.Length + (EXTENDED_RESTRICTED_ALPHABET_START - BUILT_IN_RESTRICTED_ALPHABET_COUNT);
if (_restrictedAlphabetTop == (_restrictedAlphabets.Length - 1))
{
// grow array
FIRestrictedAlphabet[] destinationArray = new FIRestrictedAlphabet[_restrictedAlphabets.Length + GROW_ARRAY_SIZE];
if (_restrictedAlphabetTop > 0)
{
Array.Copy(_restrictedAlphabets, destinationArray, (int)(_restrictedAlphabetTop + 1));
}
_restrictedAlphabets = destinationArray;
}
// add new restricted alphabet
_restrictedAlphabetTop++;
_restrictedAlphabets[_restrictedAlphabetTop] = alphabet;
return(alphabet.TableIndex);
}