Class ArabicNormalizer

Normalizer for Arabic.

Normalization is done in-place for efficiency, operating on a termbuffer.

Normalization is defined as:

  • Normalization of hamza with alef seat to a bare alef.
  • Normalization of teh marbuta to heh
  • Normalization of dotless yeh (alef maksura) to yeh.
  • Removal of Arabic diacritics (the harakat)
  • Removal of tatweel (stretching character).

Inheritance
System.Object
ArabicNormalizer
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Lucene.Net.Analysis.Ar
Assembly: Lucene.Net.Analysis.Common.dll
Syntax
public class ArabicNormalizer

Fields

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ALEF

Declaration
public const char ALEF = 'ا'
Field Value
Type Description
System.Char
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ALEF_HAMZA_ABOVE

Declaration
public const char ALEF_HAMZA_ABOVE = 'أ'
Field Value
Type Description
System.Char
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ALEF_HAMZA_BELOW

Declaration
public const char ALEF_HAMZA_BELOW = 'إ'
Field Value
Type Description
System.Char
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ALEF_MADDA

Declaration
public const char ALEF_MADDA = 'آ'
Field Value
Type Description
System.Char
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DAMMA

Declaration
public const char DAMMA = 'ُ'
Field Value
Type Description
System.Char
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DAMMATAN

Declaration
public const char DAMMATAN = 'ٌ'
Field Value
Type Description
System.Char
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DOTLESS_YEH

Declaration
public const char DOTLESS_YEH = 'ى'
Field Value
Type Description
System.Char
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FATHA

Declaration
public const char FATHA = 'َ'
Field Value
Type Description
System.Char
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FATHATAN

Declaration
public const char FATHATAN = 'ً'
Field Value
Type Description
System.Char
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HEH

Declaration
public const char HEH = 'ه'
Field Value
Type Description
System.Char
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KASRA

Declaration
public const char KASRA = 'ِ'
Field Value
Type Description
System.Char
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KASRATAN

Declaration
public const char KASRATAN = 'ٍ'
Field Value
Type Description
System.Char
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SHADDA

Declaration
public const char SHADDA = 'ّ'
Field Value
Type Description
System.Char
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SUKUN

Declaration
public const char SUKUN = 'ْ'
Field Value
Type Description
System.Char
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TATWEEL

Declaration
public const char TATWEEL = 'ـ'
Field Value
Type Description
System.Char
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TEH_MARBUTA

Declaration
public const char TEH_MARBUTA = 'ة'
Field Value
Type Description
System.Char
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YEH

Declaration
public const char YEH = 'ي'
Field Value
Type Description
System.Char

Methods

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Normalize(Char[], Int32)

Normalize an input buffer of Arabic text

Declaration
public virtual int Normalize(char[] s, int len)
Parameters
Type Name Description
System.Char[] s

input buffer

System.Int32 len

length of input buffer

Returns
Type Description
System.Int32

length of input buffer after normalization