/// <summary>Returns the next token in the stream, or null at EOS.
/// <p>Removes <tt>'s</tt> from the end of words.
/// <p>Removes dots from acronyms.
/// </summary>
public override Token Next(/* in */ Token reusableToken)
{
System.Diagnostics.Debug.Assert(reusableToken != null);
Token nextToken = input.Next(reusableToken);
if (nextToken == null)
{
return(null);
}
char[] buffer = nextToken.TermBuffer();
int bufferLength = nextToken.TermLength();
System.String type = nextToken.Type();
if (type == APOSTROPHE_TYPE &&
bufferLength >= 2 &&
buffer[bufferLength - 2] == '\'' &&
(buffer[bufferLength - 1] == 's' || buffer[bufferLength - 1] == 'S'))
{
// Strip last 2 characters off
nextToken.SetTermLength(bufferLength - 2);
}
else if (type == ACRONYM_TYPE)
{
// remove dots
int upto = 0;
for (int i = 0; i < bufferLength; i++)
{
char c = buffer[i];
if (c != '.')
{
buffer[upto++] = c;
}
}
nextToken.SetTermLength(upto);
}
return(nextToken);
}
/*
* (non-Javadoc)
*
* @see Lucene.Net.Analysis.TokenStream#next()
*/
public override Token Next(/* in */ Token reusableToken)
{
System.Diagnostics.Debug.Assert(reusableToken != null);
int posIncr = 1;
while (true)
{
int tokenType = scanner.GetNextToken();
if (tokenType == StandardTokenizerImpl.YYEOF)
{
return(null);
}
if (scanner.Yylength() <= maxTokenLength)
{
reusableToken.Clear();
reusableToken.SetPositionIncrement(posIncr);
scanner.GetText(reusableToken);
int start = scanner.Yychar();
reusableToken.SetStartOffset(start);
reusableToken.SetEndOffset(start + reusableToken.TermLength());
// This 'if' should be removed in the next release. For now, it converts
// invalid acronyms to HOST. When removed, only the 'else' part should
// remain.
if (tokenType == StandardTokenizerImpl.ACRONYM_DEP)
{
if (replaceInvalidAcronym)
{
reusableToken.SetType(StandardTokenizerImpl.TOKEN_TYPES[StandardTokenizerImpl.HOST]);
reusableToken.SetTermLength(reusableToken.TermLength() - 1); // remove extra '.'
}
else
{
reusableToken.SetType(StandardTokenizerImpl.TOKEN_TYPES[StandardTokenizerImpl.ACRONYM]);
}
}
else
{
reusableToken.SetType(StandardTokenizerImpl.TOKEN_TYPES[tokenType]);
}
return(reusableToken);
}
// When we skip a too-long term, we still increment the
// position increment
else
{
posIncr++;
}
}
}
/// <summary>Returns the next token in the stream, or null at EOS.
/// <p>Removes <tt>'s</tt> from the end of words.
/// <p>Removes dots from acronyms.
/// </summary>
public override Token Next(Token result)
{
Token t = input.Next(result);
if (t == null)
{
return(null);
}
char[] buffer = t.TermBuffer();
int bufferLength = t.TermLength();
System.String type = t.Type();
if (type == APOSTROPHE_TYPE && bufferLength >= 2 && buffer[bufferLength - 2] == '\'' && (buffer[bufferLength - 1] == 's' || buffer[bufferLength - 1] == 'S'))
{
// Strip last 2 characters off
t.SetTermLength(bufferLength - 2);
}
else if (type == ACRONYM_TYPE)
{
// remove dots
int upto = 0;
for (int i = 0; i < bufferLength; i++)
{
char c = buffer[i];
if (c != '.')
{
buffer[upto++] = c;
}
}
t.SetTermLength(upto);
}
return(t);
}
/*
* (non-Javadoc)
*
* @see Lucene.Net.Analysis.TokenStream#next()
*/
public override Token Next(Token result)
{
int posIncr = 1;
while (true)
{
int tokenType = scanner.GetNextToken();
if (tokenType == StandardTokenizerImpl.YYEOF)
{
return null;
}
if (scanner.Yylength() <= maxTokenLength)
{
result.Clear();
result.SetPositionIncrement(posIncr);
scanner.GetText(result);
int start = scanner.Yychar();
result.SetStartOffset(start);
result.SetEndOffset(start + result.TermLength());
// This 'if' should be removed in the next release. For now, it converts
// invalid acronyms to HOST. When removed, only the 'else' part should
// remain.
if (tokenType == StandardTokenizerImpl.ACRONYM_DEP)
{
if (replaceInvalidAcronym)
{
result.SetType(StandardTokenizerImpl.TOKEN_TYPES[StandardTokenizerImpl.HOST]);
result.SetTermLength(result.TermLength() - 1); // remove extra '.'
}
else
{
result.SetType(StandardTokenizerImpl.TOKEN_TYPES[StandardTokenizerImpl.ACRONYM]);
}
}
else
{
result.SetType(StandardTokenizerImpl.TOKEN_TYPES[tokenType]);
}
return result;
}
// When we skip a too-long term, we still increment the
// position increment
else
posIncr++;
}
}
