/* === This file is part of Calamares - <https://github.com/calamares> ===
 *
 *   Copyright 2013-2016, Teo Mrnjavac <teo@kde.org>
 *   Copyright 2018, Adriaan de Groot <groot@kde.org>
 *
 *   Originally from Tomahawk, portions:
 *   Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
 *   Copyright 2010-2011, Leo Franchi <lfranchi@kde.org>
 *   Copyright 2010-2012, Jeff Mitchell <jeff@tomahawk-player.org>
 *
 *   Calamares is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Calamares is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
 */

#include "String.h"

#include <QStringList>

namespace CalamaresUtils
{
QString
removeDiacritics( const QString& string )
{
    // *INDENT-OFF*
    // clang-format off
    // Map these extended-Latin characters to ASCII; keep the
    // layout so that one line in *diacriticLetters* corresponds
    // to one line of replacements in *noDiacriticLetters*.
    static const QString diacriticLetters = QString::fromUtf8(
        "ŠŒŽšœžŸ¥µÀ"
        "ÁÂÃÄÅÆÇÈÉÊ"
        "ËÌÍÎÏÐÑÒÓÔ"
        "ÕÖØÙÚÛÜÝßà"
        "áâãäåæçèéê"
        "ëìíîïðñòóô"
        "õöøùúûüýÿÞ"
        "þČčĆćĐđŠšŽ"
        "žŞşĞğİıȚțȘ"
        "șĂăŐőŰűŘřĀ"
        "āĒēĪīŌōŪūŢ"
        "ţẀẁẂẃŴŵŶŷĎ"
        "ďĚěŇňŤťŮůŔ"
        "ŕĄąĘęŁłŃńŚ"
        "śŹźŻż"
    );
    static const QStringList noDiacriticLetters = {
        "S", "OE", "Z", "s", "oe", "z", "Y", "Y", "u", "A",
        "A", "A", "A", "A", "AA", "AE", "C", "E", "E", "E",
        "E", "I", "I", "I", "I", "D", "N", "O", "O", "O",
        "O", "E", "OE", "U", "U", "U", "E", "Y", "s", "a",
        "a", "a", "a", "e", "aa", "ae", "c", "e", "e", "e",
        "e", "i", "i", "i", "i", "d", "n", "o", "o", "o",
        "o", "e", "oe", "u", "u", "u", "e", "y", "y", "TH",
        "th", "C", "c", "C", "c", "DJ", "dj", "S", "s", "Z",
        "z", "S", "s", "G", "g", "I", "i", "T", "t", "S",
        "s", "A", "a", "O", "o", "U", "u", "R", "r", "A",
        "a", "E", "e", "I", "i", "O", "o", "U", "u", "T",
        "t", "W", "w", "W", "w", "W", "w", "Y", "y", "D",
        "d", "E", "e", "N", "n", "T", "t", "U", "u", "R",
        "r", "A", "a", "E", "e", "L", "l", "N", "n", "S",
        "s", "Z", "z", "Z", "z"
    };
    // clang-format on
    // *INDENT-ON*

    QString output;
    for ( const QChar& c : string )
    {
        int i = diacriticLetters.indexOf( c );
        if ( i < 0 )
        {
            output.append( c );
        }
        else
        {
            QString replacement = noDiacriticLetters[ i ];
            output.append( replacement );
        }
    }

    return output;
}


// Function CalamaresUtils::obscure based on KStringHandler::obscure,
// part of KDElibs by KDE, file kstringhandler.cpp.
// Original copyright statement follows.
/* This file is part of the KDE libraries
   Copyright (C) 1999 Ian Zepp (icszepp@islc.net)
   Copyright (C) 2006 by Dominic Battre <dominic@battre.de>
   Copyright (C) 2006 by Martin Pool <mbp@canonical.com>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/
QString
obscure( const QString& string )
{
    QString result;
    const QChar* unicode = string.unicode();
    for ( int i = 0; i < string.length(); ++i )
    // yes, no typo. can't encode ' ' or '!' because
    // they're the unicode BOM. stupid scrambling. stupid.
    {
        result += ( unicode[ i ].unicode() <= 0x21 ) ? unicode[ i ] : QChar( 0x1001F - unicode[ i ].unicode() );
    }
    return result;
}

}  // namespace CalamaresUtils
