/// <inheritdoc />
public bool MoveNext()
{
int i = _p;
int j = 0;
bool escapeMode = false;
while (i != _charSet.Length)
{
char c = _charSet[i];
// Toggle escape mode
if (c == SpecChars.DQ || c == SpecChars.SQ)
{
escapeMode = !escapeMode;
}
// In escape mode, we have nothing to do
if (escapeMode)
{
goto TakeAndGo;
}
// Determine if we have a word separator
bool isWordSeparator = Array.IndexOf(_wordSeparator, c) != -1;
// Is this character a word separator? If so, it must not be a special construction (date, URL, ...)
if (isWordSeparator && !_textKit.IsSpecialTerm(_charSet, i, _lang))
{
string wordStr = new string(_buffer, 0, j);
Current = new Word(wordStr, _p);
// Play forward until we reach the next valuable letter
int n = i + 1;
_textKit.PlayForward(_charSet, ref n);
_p = n;
return(true);
}
// We ignore bias characters
if (TextKit.IsBias(BiasSet, c))
{
goto NextRound;
}
TakeAndGo:
// Character is relevant, so we take it
_buffer[j++] = c;
NextRound:
i++;
}
return(false);
}
/// <summary> Initializes the new instance. </summary>
/// <param name="text">Text to iterate</param>
/// <param name="lang">Language info</param>
/// <exception cref="ArgumentNullException">If any argument is NULL</exception>
public SentenceIterator(string text, ILangInfo lang)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
_lang = lang ?? throw new ArgumentNullException(nameof(lang));
_charSet = text.ToCharArray();
_puncMarks = _lang.PuncMarks;
_textKit = new TextKit(new[] { SpecChars.WS, SpecChars.CR, SpecChars.NL });
}
/// <summary> Initializes the new instance. </summary>
/// <param name="text">Text that contains the words to iterate</param>
/// <param name="lang">Language info</param>
/// <exception cref="ArgumentNullException">If any argument is NULL</exception>
public WordIterator(string text, ILangInfo lang)
{
if (text == null)
{
throw new ArgumentNullException(nameof(text));
}
_lang = lang ?? throw new ArgumentNullException(nameof(lang));
_charSet = text.ToCharArray();
_buffer = new char[100];
_wordSeparator = lang.WordSeparator;
_textKit = new TextKit(new[] { SpecChars.WS, SpecChars.CR, SpecChars.NL });
}