/* -*- 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 .
 */


module com { module sun { module star { module i18n {


/*

Possible tokens to be parsed with  parse...Token():

UPASCALPHA=[A-Z]
LOASCALPHA=[a-z]
ASCALPHA=1*(UPASCALPHA|LOASCALPHA)
ASCDIGIT=[0-9]
ASC_UNDERSCORE='_'
ASC_SPACE=' '
ASC_HT='\0x9'
ASC_VT='\0xb'
ASC_WS=ASC_SPACE|ASC_HT|ASC_VT
ASC_DBL_QUOTE=\";
ASC_QUOTE=\'
UPASC_IDENTIFIER=UPASCALPHA *(UPASCALPHA|ASCDIGIT|ASC_UNDERSCORE)

ALPHA,DIGIT are the tokens which return true for isAlpha and isDigit
ALNUM=ALPHA|DIGIT
CHAR=anycharacter
WS=isWhiteSpace()
SIGN='+'|'-'
DECSEP=<locale dependent decimal separator>
GRPSEP=<locale dependent thousand separator>
EXPONENT=(E|e)[SIGN]1*ASC_DIGIT

IDENTIFIER=ALPHA *ALNUM
UIDENTIFIER=(ALPHA | ASC_UNDERSCORE) *(ALNUM|ASC_UNDERSCORE)
ALPHA_NAME=ALPHA *(ALNUM|DEFCHARS)
ANY_NAME=1*(ALNUM|DEFCHARS)
SINGLE_QUOTE_NAME=ASC_QUOTE(1*CHAR)ASC_QUOTE
DOUBLE_QUOTE_NAME=ASC_DBL_QUOTE(*CHAR)ASC_DBL_QUOTE
ASC_NUMBER=[SIGN]*(1*ASC_DIGIT  *(GRPSEP 1*ASC_DIGIT))[DECSEP]1*ASC_DIGIT[EXPONENT]
NUMBER=[SIGN]*(1*DIGIT  *(GRPSEP 1*DIGIT))[DECSEP]1*DIGIT[EXPONENT]

*/


/**
    Character classification (upper, lower, digit, letter, number, ...)
    and generic Unicode enabled parser.
 */

published interface XCharacterClassification : com::sun::star::uno::XInterface
{
    /** Convert lower case alpha to upper case alpha, starting at
        position <em>nPos</em> for <em>nCount</em> code points.
     */
    string   toUpper( [in] string aText, [in] long nPos, [in] long nCount,
                      [in] com::sun::star::lang::Locale aLocale );

    /** Convert upper case alpha to lower case alpha, starting at
        position <em>nPos</em> for <em>nCount</em> code points.
     */
    string   toLower( [in] string aText, [in] long nPos, [in] long nCount,
                      [in] com::sun::star::lang::Locale aLocale );

    /** Convert to title case, starting at
        position <em>nPos</em> for <em>nCount</em> code points.
     */
    string   toTitle( [in] string aText, [in] long nPos, [in] long nCount,
                      [in] com::sun::star::lang::Locale aLocale );

    /// Get UnicodeType of character at position <em>nPos</em>.
    short    getType( [in] string aText, [in] long nPos );

    /** Get DirectionProperty of character at position
        <em>nPos</em>.
     */
    short    getCharacterDirection( [in] string aText, [in] long nPos );

    /// Get UnicodeScript of character at position <em>nPos</em>.
    short    getScript( [in] string aText, [in] long nPos );

    /// Get KCharacterType of character at position <em>nPos</em>.
    long getCharacterType( [in] string aText, [in] long nPos,
                           [in] com::sun::star::lang::Locale aLocale );

    /** Get accumulated KCharacterTypes of string starting
        at position <em>nPos</em> of length <em>nCount</em> code points.

        @returns
            A number with appropriate flags set to indicate what type of
            characters the string contains, each flag value being one of
            KCharacterType values.

        @note The accumulated bits of several characters are meaningless
            as soon as characters of different classifications are
            involved, which even may have a common subset like
            KCharacterType::LETTER or KCharacterType::PRINTABLE, unless
            it is to be determined what overall character properties are
            present in the string. Use getCharacterType() of single
            characters instead and handle bits as needed if sets of
            character properties are to be obtained.

    */
    long getStringType( [in] string aText, [in] long nPos, [in] long nCount,
                        [in] com::sun::star::lang::Locale aLocale );


    /**
        Parse a string for a token starting at position <em>nPos</em>.

        <p> A name or identifier must match the
        KParseTokens criteria passed in
        <em>nStartCharFlags</em> and <em>nContCharFlags</em> and may
        additionally contain characters of
        <em>aUserDefinedCharactersStart</em> and/or
        <em>aUserDefinedCharactersCont</em>. </p>


        @returns
            A filled ParseResult structure. If no
            unambiguous token could be parsed,
            ParseResult::TokenType will be set to
            <b>0</b> (zero), other fields will contain the values parsed
            so far.

            <p> If a token may represent either a numeric value or a
            name according to the passed Start/Cont-Flags/Chars, both
            KParseType::ASC_NUM (or
            KParseType::UNI_NUM) and
            KParseType::IDENTNAME are set in
            ParseResult::TokenType.

        @param  aText
            Text to be parsed.

        @param  nPos
            Position where parsing starts.

        @param  aLocale
            The locale, for example, for decimal and group separator or
            character type determination.

        @param  nStartCharFlags
            A set of KParseTokens constants determining the
            allowed characters a name or identifier may start with.

        @param  aUserDefinedCharactersStart
            A set of additionally allowed characters a name or
            identifier may start with.

        @param  nContCharFlags
            A set of KParseTokens constants determining the
            allowed characters a name or identifier may continue with.

        @param  aUserDefinedCharactersCont
            A set of additionally allowed characters a name or
            identifier may continue with.

        @code{.cpp}
            using namespace ::com::sun::star::i18n;
            // First character of an identifier may be any alphabetic or underscore.
            sal_Int32 nStartFlags = KParseTokens::ANY_ALPHA | KParseTokens::ASC_UNDERSCORE;
            // Continuing characters may be any alphanumeric or underscore or dot.
            sal_Int32 nContFlags = KParseTokens::ANY_ALNUM | KParseTokens::ASC_UNDERSCORE | KParseTokens::ASC_DOT;
            // No further characters assumed to be contained in an identifier
            OUString aEmptyString;
            // Parse any token.
            ParseResult rRes = xCC->parseAnyToken( aText, nPos, aLocale,
                nStartFlags, aEmptyString, nContFlags, aEmptyString );
            // Get parsed token.
            if ( rRes.TokenType & (KParseType::ASC_NUMBER | KParseType::UNI_NUMBER) )
                fValue = rRes.Value;
            if ( rRes.TokenType & KParseType::IDENTNAME )
                aName = aText.copy( nPos, rRes.EndPos - nPos );
            else if ( rRes.TokenType & KParseType::SINGLE_QUOTE_NAME )
                aName = rRes.DequotedNameOrString;
            else if ( rRes.TokenType & KParseType::DOUBLE_QUOTE_STRING )
                aString = rRes.DequotedNameOrString;
            else if ( rRes.TokenType & KParseType::BOOLEAN )
                aSymbol = aText.copy( nPos, rRes.EndPos - nPos );
            else if ( rRes.TokenType & KParseType::ONE_SINGLE_CHAR )
                aSymbol = aText.copy( nPos, rRes.EndPos - nPos );
        @endcode
     */

    ParseResult parseAnyToken(
                            [in] string aText,
                            [in] long nPos,
                            [in] com::sun::star::lang::Locale aLocale,
                            [in] long nStartCharFlags,
                            [in] string aUserDefinedCharactersStart,
                            [in] long nContCharFlags,
                            [in] string aUserDefinedCharactersCont
                            );

    /**
        Parse a string for a token of type <em>nTokenType</em> starting
        at position <em>nPos</em>.

        <p> Other parameters are the same as in
        parseAnyToken(). If the actual token does not
        match the passed <em>nTokenType</em> a
        ParseResult::TokenType set to <b>0</b> (zero)
        is returned. </p>

        @param  nTokenType
            One or more of the KParseType constants.

        @param aText
            See #parseAnyToken
        @param nPos
            See #parseAnyToken
        @param aLocale
            See #parseAnyToken
        @param nStartCharFlags
            See #parseAnyToken
        @param aUserDefinedCharactersStart
            See #parseAnyToken
        @param nContCharFlags
            See #parseAnyToken
        @param aUserDefinedCharactersCont
            See #parseAnyToken

        @code{.cpp}
            // Determine if a given name is a valid name (not quoted) and contains
            // only allowed characters.
            using namespace ::com::sun::star::i18n;
            // First character of an identifier may be any alphanumeric or underscore.
            sal_Int32 nStartFlags = KParseTokens::ANY_ALNUM | KParseTokens::ASC_UNDERSCORE;
            // No further characters assumed to be contained in an identifier start.
            OUString aEmptyString;
            // Continuing characters may be any alphanumeric or underscore.
            sal_Int32 nContFlags = nStartFlags;
            // Additionally, continuing characters may contain a blank.
            OUString aContChars( " " );
            // Parse predefined (must be an IDENTNAME) token.
            ParseResult rRes = xCC->parsePredefinedToken( KParseType::IDENTNAME, rName, 0, aLocale,
                nStartFlags, aEmptyString, nContFlags, aContChars );
            // Test if it is an identifier name and if it only is one
            // and no more else is following it.
            bValid = (rRes.TokenType & KParseType::IDENTNAME) && rRes.EndPos == rName.Len();
        @endcode
     */

    ParseResult parsePredefinedToken(
                            [in] long nTokenType,
                            [in] string aText,
                            [in] long nPos,
                            [in] com::sun::star::lang::Locale aLocale,
                            [in] long nStartCharFlags,
                            [in] string aUserDefinedCharactersStart,
                            [in] long nContCharFlags,
                            [in] string aUserDefinedCharactersCont
                            );
};

}; }; }; };

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
