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/* -*- 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: */
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