/// <summary>
/// Stem suffix(es) off an Arabic word. </summary>
/// <param name="s"> input buffer </param>
/// <param name="len"> length of input buffer </param>
/// <returns> new length of input buffer after stemming </returns>
public virtual int StemSuffix(char[] s, int len)
{
for (int i = 0; i < suffixes.Length; i++)
{
if (EndsWithCheckLength(s, len, suffixes[i]))
{
len = StemmerUtil.DeleteN(s, len - suffixes[i].Length, len, suffixes[i].Length);
}
}
return(len);
}
/// <summary>
/// Stem a prefix off an Arabic word. </summary>
/// <param name="s"> input buffer </param>
/// <param name="len"> length of input buffer </param>
/// <returns> new length of input buffer after stemming. </returns>
public virtual int StemPrefix(char[] s, int len)
{
for (int i = 0; i < prefixes.Length; i++)
{
if (StartsWithCheckLength(s, len, prefixes[i]))
{
return(StemmerUtil.DeleteN(s, 0, len, prefixes[i].Length));
}
}
return(len);
}
/// <summary>
/// Stem suffix(es) off an Persian word. </summary>
/// <param name="s"> input buffer </param>
/// <param name="len"> length of input buffer </param>
/// <returns> new length of input buffer after stemming </returns>
private int StemSuffix(char[] s, int len)
{
foreach (var suffix in Suffixes)
{
if (EndsWithCheckLength(s, len, suffix))
{
len = StemmerUtil.DeleteN(s, len - suffix.Length, len, suffix.Length);
}
}
return(len);
}
private int RemoveSecondOrderPrefix(char[] text, int length)
{
if (StemmerUtil.StartsWith(text, length, "ber"))
{
flags |= REMOVED_BER;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (length == 7 && StemmerUtil.StartsWith(text, length, "belajar"))
{
flags |= REMOVED_BER;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "be") && length > 4 && !IsVowel(text[2]) && text[3] == 'e' && text[4] == 'r')
{
flags |= REMOVED_BER;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 2));
}
if (StemmerUtil.StartsWith(text, length, "per"))
{
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (length == 7 && StemmerUtil.StartsWith(text, length, "pelajar"))
{
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "pe"))
{
flags |= REMOVED_PE;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 2));
}
return(length);
}
private int RemoveFirstOrderPrefix(char[] text, int length)
{
if (StemmerUtil.StartsWith(text, length, "meng"))
{
flags |= REMOVED_MENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 4));
}
if (StemmerUtil.StartsWith(text, length, "meny") && length > 4 && IsVowel(text[4]))
{
flags |= REMOVED_MENG;
text[3] = 's';
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "men"))
{
flags |= REMOVED_MENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "mem"))
{
flags |= REMOVED_MENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "me"))
{
flags |= REMOVED_MENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 2));
}
if (StemmerUtil.StartsWith(text, length, "peng"))
{
flags |= REMOVED_PENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 4));
}
if (StemmerUtil.StartsWith(text, length, "peny") && length > 4 && IsVowel(text[4]))
{
flags |= REMOVED_PENG;
text[3] = 's';
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "peny"))
{
flags |= REMOVED_PENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 4));
}
if (StemmerUtil.StartsWith(text, length, "pen") && length > 3 && IsVowel(text[3]))
{
flags |= REMOVED_PENG;
text[2] = 't';
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 2));
}
if (StemmerUtil.StartsWith(text, length, "pen"))
{
flags |= REMOVED_PENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "pem"))
{
flags |= REMOVED_PENG;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "di"))
{
flags |= REMOVED_DI;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 2));
}
if (StemmerUtil.StartsWith(text, length, "ter"))
{
flags |= REMOVED_TER;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 3));
}
if (StemmerUtil.StartsWith(text, length, "ke"))
{
flags |= REMOVED_KE;
numSyllables--;
return(StemmerUtil.DeleteN(text, 0, length, 2));
}
return(length);
}