/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

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 * 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 .

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#ifndef INCLUDED_UNOTOOLS_CHARCLASS_HXX

#define INCLUDED_UNOTOOLS_CHARCLASS_HXX

#include <unotools/unotoolsdllapi.h>

#include <i18nlangtag/languagetag.hxx>

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

#include <com/sun/star/uno/Reference.hxx>

namespace com::sun::star::uno { class XComponentContext; }

namespace com::sun::star::i18n { class XCharacterClassification; }

namespace com::sun::star::i18n { enum class DirectionProperty; }

namespace com::sun::star::i18n { enum class UnicodeScript; }

namespace com::sun::star::i18n { struct ParseResult; }

inline constexpr sal_Int32 nCharClassAlphaType =

    css::i18n::KCharacterType::UPPER |

    css::i18n::KCharacterType::LOWER |

    css::i18n::KCharacterType::TITLE_CASE;

inline constexpr sal_Int32 nCharClassAlphaTypeMask =

    nCharClassAlphaType |

    css::i18n::KCharacterType::LETTER |     // Alpha is also always a LETTER

    css::i18n::KCharacterType::PRINTABLE |

    css::i18n::KCharacterType::BASE_FORM;

inline constexpr sal_Int32 nCharClassLetterType =

    nCharClassAlphaType |

    css::i18n::KCharacterType::LETTER;

inline constexpr sal_Int32 nCharClassLetterTypeMask =

    nCharClassAlphaTypeMask |

    css::i18n::KCharacterType::LETTER;

inline constexpr sal_Int32 nCharClassNumericType =

    css::i18n::KCharacterType::DIGIT;

inline constexpr sal_Int32 nCharClassNumericTypeMask =

    nCharClassNumericType |

    css::i18n::KCharacterType::PRINTABLE |

    css::i18n::KCharacterType::BASE_FORM;

inline constexpr sal_Int32 nCharClassBaseType =

    css::i18n::KCharacterType::BASE_FORM;

class UNOTOOLS_DLLPUBLIC CharClass

{

    LanguageTag                 maLanguageTag;

    css::uno::Reference< css::i18n::XCharacterClassification >    xCC;

    CharClass(const CharClass&) = delete;

    CharClass& operator=(const CharClass&) = delete;

public:

    /// Preferred ctor with service manager specified

    CharClass(

        const css::uno::Reference< css::uno::XComponentContext > & rxContext,

        LanguageTag aLanguageTag );

    /// Deprecated ctor, tries to get a process service manager or to load the

    /// library directly.

    CharClass( LanguageTag aLanguageTag );

    ~CharClass();

    /// get current Locale

    const LanguageTag& getLanguageTag() const;

    /// isdigit() on ascii values of entire string

    static bool isAsciiNumeric( std::u16string_view rStr );

    /// isalpha() on ascii values of entire string

    static bool isAsciiAlpha( std::u16string_view rStr );

    /// whether type is pure numeric or not, e.g. return of getCharacterType()

    static bool isNumericType( sal_Int32 nType )

    {

        return ((nType & nCharClassNumericType) != 0) &&

            ((nType & ~nCharClassNumericTypeMask) == 0);

    }

    /// whether type is pure letter or not, e.g. return of getCharacterType()

    static bool isLetterType( sal_Int32 nType )

    {

        return ((nType & nCharClassLetterType) != 0) &&

            ((nType & ~nCharClassLetterTypeMask) == 0);

    }

    /// whether type is pure letternumeric or not, e.g. return of getCharacterType()

    static bool isLetterNumericType( sal_Int32 nType )

    {

        return ((nType & (nCharClassLetterType |

            nCharClassNumericType)) != 0) &&

            ((nType & ~(nCharClassLetterTypeMask |

            nCharClassNumericTypeMask)) == 0);

    }

    // Wrapper implementations of class CharacterClassification

    OUString uppercase( const OUString& rStr, sal_Int32 nPos, sal_Int32 nCount ) const;

    OUString lowercase( const OUString& rStr, sal_Int32 nPos, sal_Int32 nCount ) const;

    OUString titlecase( const OUString& rStr, sal_Int32 nPos, sal_Int32 nCount ) const;

    OUString uppercase( const OUString& _rStr ) const

    {

        return uppercase(_rStr, 0, _rStr.getLength());

    }

    OUString lowercase( const OUString& _rStr ) const

    {

        return lowercase(_rStr, 0, _rStr.getLength());

    }

    OUString titlecase( const OUString& _rStr ) const

    {

        return titlecase(_rStr, 0, _rStr.getLength());

    }

    sal_Int16 getType( const OUString& rStr, sal_Int32 nPos ) const;

    css::i18n::DirectionProperty getCharacterDirection( const OUString& rStr, sal_Int32 nPos ) const;

    css::i18n::UnicodeScript getScript( const OUString& rStr, sal_Int32 nPos ) const;

    sal_Int32 getCharacterType( const OUString& rStr, sal_Int32 nPos ) const;

    css::i18n::ParseResult parseAnyToken(

                                    const OUString& rStr,

                                    sal_Int32 nPos,

                                    sal_Int32 nStartCharFlags,

                                    const OUString& userDefinedCharactersStart,

                                    sal_Int32 nContCharFlags,

                                    const OUString& userDefinedCharactersCont ) const;

    css::i18n::ParseResult parsePredefinedToken(

                                    sal_Int32 nTokenType,

                                    const OUString& rStr,

                                    sal_Int32 nPos,

                                    sal_Int32 nStartCharFlags,

                                    const OUString& userDefinedCharactersStart,

                                    sal_Int32 nContCharFlags,

                                    const OUString& userDefinedCharactersCont ) const;

    // Functionality of class International methods

    bool isAlpha( const OUString& rStr, sal_Int32 nPos ) const;

    bool isLetter( const OUString& rStr, sal_Int32 nPos ) const;

    bool isDigit( const OUString& rStr, sal_Int32 nPos ) const;

    bool isAlphaNumeric( const OUString& rStr, sal_Int32 nPos ) const;

    bool isLetterNumeric( const OUString& rStr, sal_Int32 nPos ) const;

    bool isBase( const OUString& rStr, sal_Int32 nPos ) const;

    bool isUpper( const OUString& rStr, sal_Int32 nPos ) const;

    bool isLetter( const OUString& rStr ) const;

    bool isNumeric( const OUString& rStr ) const;

    bool isLetterNumeric( const OUString& rStr ) const;

private:

    const css::lang::Locale &  getMyLocale() const;

};

#endif // INCLUDED_UNOTOOLS_CHARCLASS_HXX

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