File indexing completed on 2025-02-23 04:34:25

 /**
  * \file tracknumbervalidator.cpp
  * Validator for track and disc numbers with optional total.
  *
  * \b Project: Kid3
  * \author Urs Fleisch
  * \date 24 May 2014
  *
  * Copyright (C) 2014-2024  Urs Fleisch
  *
  * This file is part of Kid3.
  *
  * Kid3 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 2 of the License, or
  * (at your option) any later version.
  *
  * Kid3 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 this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "tracknumbervalidator.h"
 
 /**
  * Constructor.
  * @param parent parent object
  */
 TrackNumberValidator::TrackNumberValidator(QObject *parent) : QValidator(parent)
 {
 }
 
 /**
  * Validate input string.
  * @param input input string
  * @return current state of input (Invalid, Intermediate or Acceptable).
  */
 QValidator::State TrackNumberValidator::validate(QString& input, int&) const
 {
   for (auto it = input.constBegin(); it != input.constEnd(); ++it) {
     if (!it->isDigit() && *it != QLatin1Char('/')) {
       return Invalid;
     }
   }
 
   int len = input.length();
   if (len == 0)
     return Acceptable;
 
   bool ok;
   if (int slashPos = input.indexOf(QLatin1Char('/')); slashPos == -1) {
     input.toULongLong(&ok);
     return ok ? Acceptable : Invalid;
   } else {
     if (slashPos == len - 1) {
       return Intermediate;
     }
     if (input.indexOf(QLatin1Char('/'), slashPos + 1) != -1) {
       return Invalid;
     }
     if (slashPos == 0) {
       return Intermediate;
     }
 
 #if QT_VERSION >= 0x060000
     input.left(slashPos).toULongLong(&ok);
     if (ok) {
       input.mid(slashPos + 1).toULongLong(&ok);
     }
 #else
     input.leftRef(slashPos).toULongLong(&ok);
     if (ok) {
       input.midRef(slashPos + 1).toULongLong(&ok);
     }
 #endif
   }
   return ok ? Acceptable : Invalid;
 }
 
 /**
  * Attempt to change @a input to be valid.
  * @param input input string
  */
 void TrackNumberValidator::fixup(QString& input) const
 {
   if (int len = input.length(); len > 0) {
     if (input.at(0) == QLatin1Char('/')) {
       input = input.mid(1);
     } else if (input.at(len - 1) == QLatin1Char('/')) {
       input.truncate(len - 1);
     }
   }
 }