diff options
Diffstat (limited to '')
-rw-r--r-- | intl/icu/source/i18n/unesctrn.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/unesctrn.h b/intl/icu/source/i18n/unesctrn.h new file mode 100644 index 0000000000..3bea278082 --- /dev/null +++ b/intl/icu/source/i18n/unesctrn.h @@ -0,0 +1,112 @@ +// © 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. + */ + char16_t* spec; // owned; may not be nullptr + + 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 char16_t *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 |