diff options
Diffstat (limited to 'include/i18nutil/unicode.hxx')
| -rw-r--r-- | include/i18nutil/unicode.hxx | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/include/i18nutil/unicode.hxx b/include/i18nutil/unicode.hxx new file mode 100644 index 000000000..f0db87095 --- /dev/null +++ b/include/i18nutil/unicode.hxx @@ -0,0 +1,132 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#ifndef INCLUDED_I18NUTIL_UNICODE_HXX +#define INCLUDED_I18NUTIL_UNICODE_HXX + +#include <com/sun/star/i18n/UnicodeScript.hpp> +#include <sal/types.h> +#include <rtl/ustrbuf.hxx> +#include <unicode/uscript.h> +#include <i18nutil/i18nutildllapi.h> + +class LanguageTag; + +struct ScriptTypeList { + css::i18n::UnicodeScript from; + css::i18n::UnicodeScript to; + sal_Int16 value; +}; + +class I18NUTIL_DLLPUBLIC unicode +{ +public: + + static sal_Int16 getUnicodeType( const sal_Unicode ch ); + static sal_Int16 getUnicodeScriptType( const sal_Unicode ch, const ScriptTypeList *typeList, sal_Int16 unknownType = 0 ); + static sal_Unicode getUnicodeScriptStart(css::i18n::UnicodeScript type); + static sal_Unicode getUnicodeScriptEnd(css::i18n::UnicodeScript type); + static sal_uInt8 getUnicodeDirection( const sal_Unicode ch ); + static bool isControl( const sal_Unicode ch); + static bool isAlpha( const sal_Unicode ch); + static bool isSpace( const sal_Unicode ch); + static bool isWhiteSpace( const sal_Unicode ch); + + /** Check for Unicode variation sequence selectors + + @param nCode A Unicode code point. + + @return True if code is a Unicode variation sequence selector. + */ + static bool isIVSSelector(sal_uInt32 nCode) + { + return (nCode >= 0xFE00 && nCode <= 0xFE0F) // Variation Selectors block + || (nCode >= 0xE0100 && nCode <= 0xE01EF);// Variation Selectors Supplement block + } + + /** Check for base characters of a CJK ideographic variation sequence (IVS) + + @param nCode A Unicode code point. + + @return True if code is a Unicode base character part of CJK IVS + */ + static bool isCJKIVSCharacter(sal_uInt32 nCode) + { + return (nCode >= 0x4E00 && nCode <= 0x9FFF) // CJK Unified Ideographs + || (nCode >= 0x3400 && nCode <= 0x4DBF) // CJK Unified Ideographs Extension A + || (nCode >= 0x20000 && nCode <= 0x2A6DF); // CJK Unified Ideographs Extension B + } + + //Map an ISO 15924 script code to Latin/Asian/Complex/Weak + static sal_Int16 getScriptClassFromUScriptCode(UScriptCode eScript); + + //Return a language that can be written in a given ISO 15924 script code + static OString getExemplarLanguageForUScriptCode(UScriptCode eScript); + + //Format a number as a percentage according to the rules of the given + //language, e.g. 100 -> "100%" for en-US vs "100 %" for de-DE + static OUString formatPercent(double dNumber, + const LanguageTag &rLangTag); +}; + +/* + Toggle between a character and its Unicode Notation. + -implements the concept found in Microsoft Word's Alt-X + -accepts sequences of up to 8 hex characters and converts into the corresponding Unicode Character + -example: 0000A78c or 2bc + -accepts sequences of up to 256 characters in Unicode notation + -example: U+00000065u+0331u+308 + -handles complex characters (with combining elements) and the all of the Unicode planes. +*/ +class I18NUTIL_DLLPUBLIC ToggleUnicodeCodepoint +{ +private: + OUStringBuffer maInput; + OUStringBuffer maUtf16; + OUStringBuffer maCombining; + bool mbAllowMoreChars = true; + bool mbRequiresU = false; + bool mbIsHexString = false; + +public: + /** + Build an input string of valid UTF16 units to toggle. + -do not call the other functions until the input process is complete + -build string from Right to Left. (Start from the character to the left of the cursor: move left.) + */ + bool AllowMoreInput(sal_Unicode uChar); + + /** + Validates (and potentially modifies) the input string. + -all non-input functions must use this function to first to validate the input string + -additional input may be prevented after this function is called + */ + OUString StringToReplace(); + OUString ReplacementString(); + + /** + While sInput.getLength() returns the number of utf16 units to delete, + this function returns the number of "characters" to delete - potentially a smaller number + */ + sal_uInt32 CharsToDelete(); +}; + +#endif + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |