/// <summary>
/// Reads word from string. Returns null if no word is available.
/// Word reading begins from first char, for example if SP"text", then space is trimmed.
/// </summary>
/// <param name="unQuote">Specifies if quoted string word is unquoted.</param>
/// <param name="wordTerminatorChars">Specifies chars what terminate word.</param>
/// <param name="removeWordTerminator">Specifies if work terminator is removed.</param>
/// <returns></returns>
public string ReadWord(bool unQuote, char[] wordTerminatorChars, bool removeWordTerminator)
{
// Always start word reading from first char.
this.ReadToFirstChar();
if (this.Available == 0)
{
return(null);
}
// quoted word can contain any char, " must be escaped with \
// unqouted word can conatin any char except: SP VTAB HTAB,{}()[]<>
if (m_SourceString.StartsWith("\""))
{
if (unQuote)
{
return(TextUtils.UnQuoteString(QuotedReadToDelimiter(wordTerminatorChars, removeWordTerminator)));
}
else
{
return(QuotedReadToDelimiter(wordTerminatorChars, removeWordTerminator));
}
}
else
{
int wordLength = 0;
for (int i = 0; i < m_SourceString.Length; i++)
{
char c = m_SourceString[i];
bool isTerminator = false;
foreach (char terminator in wordTerminatorChars)
{
if (c == terminator)
{
isTerminator = true;
break;
}
}
if (isTerminator)
{
break;
}
wordLength++;
}
string retVal = m_SourceString.Substring(0, wordLength);
if (removeWordTerminator)
{
if (m_SourceString.Length >= wordLength + 1)
{
m_SourceString = m_SourceString.Substring(wordLength + 1);
}
}
else
{
m_SourceString = m_SourceString.Substring(wordLength);
}
return(retVal);
}
}