/* -*- 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 .

 */

#pragma once

#include <com/sun/star/i18n/UnicodeScript.hpp>

#include <sal/types.h>

#include <rtl/ustrbuf.hxx>

#include <unicode/uchar.h>

#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_uInt32 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 sal_uInt32 GetMirroredChar(sal_uInt32);

    static bool isControl(const sal_uInt32 ch);

    static bool isAlpha(const sal_uInt32 ch);

    static bool isSpace(const sal_uInt32 ch);

    static bool isWhiteSpace(const sal_uInt32 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 isVariationSelector(sal_uInt32 nCode)

    {

        return u_getIntPropertyValue(nCode, UCHAR_VARIATION_SELECTOR) != 0;

    }

Unexecuted instantiation: unicode::isVariationSelector(unsigned int)

Unexecuted instantiation: unicode::isVariationSelector(unsigned int)

    //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);

    /** Map a LanguageTag's language ISO 639 code or script ISO 15924 code or

        language-script or locale to Latin/Asian/Complex/Weak. If more than one

        script is used with a language(-country) tag then the first (default)

        script is mapped for that language.

        @return a css::i18n::ScriptType value.

     */

    static sal_Int16 getScriptClassFromLanguageTag(const LanguageTag& rLanguageTag);

};

/*

    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 mbRequiresU = false;

    bool mbIsHexString = false;

#ifndef NDEBUG

    bool mbInputEnded = false;

#endif

public:

    /**

    Build an input string of valid UTF16/UCS4 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.)

        - accepted input:

          - a sequence of 2 to 8 hex characters not preceded by U+, to convert to Unicode;

          - a sequence of up to 256 concatenated U+ notation - like u+xxxxU+yyyy, where xxxx and

            yyyy are sequences of 2 to 8 hexadecimal digits - to convert it all to Unicode;

          - a single (maybe combined) "symbol" - i.e., one or several codepoints that constitute

            one glyph - to convert from Unicode to U+ notation.

    */

    bool AllowMoreInput(sal_uInt32 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();

};

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