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/**
*******************************************************************************
* Copyright (C) 2005-2012, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*/
package com.ibm.icu.text;
/**
* Abstract class for recognizing a single charset.
* Part of the implementation of ICU's CharsetDetector.
*
* Each specific charset that can be recognized will have an instance
* of some subclass of this class. All interaction between the overall
* CharsetDetector and the stuff specific to an individual charset happens
* via the interface provided here.
*
* Instances of CharsetDetector DO NOT have or maintain
* state pertaining to a specific match or detect operation.
* The WILL be shared by multiple instances of CharsetDetector.
* They encapsulate const charset-specific information.
*/
abstract class CharsetRecognizer {
/**
* Get the IANA name of this charset.
* @return the charset name.
*/
abstract String getName();
/**
* Get the ISO language code for this charset.
* @return the language code, or null
if the language cannot be determined.
*/
public String getLanguage()
{
return null;
}
/**
* Test the match of this charset with the input text data
* which is obtained via the CharsetDetector object.
*
* @param det The CharsetDetector, which contains the input text
* to be checked for being in this charset.
* @return A CharsetMatch object containing details of match
* with this charset, or null if there was no match.
*/
abstract CharsetMatch match(CharsetDetector det);
}