113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
/*
|
|
**********************************************************************
|
|
* Copyright (c) 2001-2007, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
**********************************************************************
|
|
* Date Name Description
|
|
* 11/20/2001 aliu Creation.
|
|
**********************************************************************
|
|
*/
|
|
#ifndef UNESCTRN_H
|
|
#define UNESCTRN_H
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
#if !UCONFIG_NO_TRANSLITERATION
|
|
|
|
#include "unicode/translit.h"
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
/**
|
|
* A transliterator that converts Unicode escape forms to the
|
|
* characters they represent. Escape forms have a prefix, a suffix, a
|
|
* radix, and minimum and maximum digit counts.
|
|
*
|
|
* <p>This class is package private. It registers several standard
|
|
* variants with the system which are then accessed via their IDs.
|
|
*
|
|
* @author Alan Liu
|
|
*/
|
|
class UnescapeTransliterator : public Transliterator {
|
|
|
|
private:
|
|
|
|
/**
|
|
* The encoded pattern specification. The pattern consists of
|
|
* zero or more forms. Each form consists of a prefix, suffix,
|
|
* radix, minimum digit count, and maximum digit count. These
|
|
* values are stored as a five character header. That is, their
|
|
* numeric values are cast to 16-bit characters and stored in the
|
|
* string. Following these five characters, the prefix
|
|
* characters, then suffix characters are stored. Each form thus
|
|
* takes n+5 characters, where n is the total length of the prefix
|
|
* and suffix. The end is marked by a header of length one
|
|
* consisting of the character END.
|
|
*/
|
|
UChar* spec; // owned; may not be NULL
|
|
|
|
public:
|
|
|
|
/**
|
|
* Registers standard variants with the system. Called by
|
|
* Transliterator during initialization.
|
|
*/
|
|
static void registerIDs();
|
|
|
|
/**
|
|
* Constructor. Takes the encoded spec array (does not adopt it).
|
|
* @param ID the string identifier for this transliterator
|
|
* @param spec the encoded spec array
|
|
*/
|
|
UnescapeTransliterator(const UnicodeString& ID,
|
|
const UChar *spec);
|
|
|
|
/**
|
|
* Copy constructor.
|
|
*/
|
|
UnescapeTransliterator(const UnescapeTransliterator&);
|
|
|
|
/**
|
|
* Destructor.
|
|
*/
|
|
virtual ~UnescapeTransliterator();
|
|
|
|
/**
|
|
* Transliterator API.
|
|
*/
|
|
virtual UnescapeTransliterator* clone() const override;
|
|
|
|
/**
|
|
* ICU "poor man's RTTI", returns a UClassID for the actual class.
|
|
*/
|
|
virtual UClassID getDynamicClassID() const override;
|
|
|
|
/**
|
|
* ICU "poor man's RTTI", returns a UClassID for this class.
|
|
*/
|
|
U_I18N_API static UClassID U_EXPORT2 getStaticClassID();
|
|
|
|
protected:
|
|
|
|
/**
|
|
* Implements {@link Transliterator#handleTransliterate}.
|
|
* @param text the buffer holding transliterated and
|
|
* untransliterated text
|
|
* @param offset the start and limit of the text, the position
|
|
* of the cursor, and the start and limit of transliteration.
|
|
* @param incremental if true, assume more text may be coming after
|
|
* pos.contextLimit. Otherwise, assume the text is complete.
|
|
*/
|
|
virtual void handleTransliterate(Replaceable& text, UTransPosition& offset,
|
|
UBool isIncremental) const override;
|
|
|
|
};
|
|
|
|
U_NAMESPACE_END
|
|
|
|
#endif /* #if !UCONFIG_NO_TRANSLITERATION */
|
|
|
|
#endif
|