src/base/tag.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2023  Vladimir Golovnev <glassez@yandex.ru>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #include "tag.h"
  30
  31 #include <QDataStream>
  32
  33 #include "base/concepts/stringable.h"
  34
  35 namespace
  36 {
  37     QString cleanTag(const QString &tag)
  38     {
  39         return tag.trimmed();
  40     }
  41 }
  42
  43 // `Tag` should satisfy `Stringable` concept in order to be stored in settings as string
  44 static_assert(Stringable<Tag>);
  45
  46 Tag::Tag(const QString &tagStr)
  47     : m_tagStr {cleanTag(tagStr)}
  48 {
  49 }
  50
  51 Tag::Tag(const std::string &tagStr)
  52     : Tag(QString::fromStdString(tagStr))
  53 {
  54 }
  55
  56 bool Tag::isValid() const
  57 {
  58     if (isEmpty())
  59         return false;
  60
  61     return !m_tagStr.contains(u',');
  62 }
  63
  64 bool Tag::isEmpty() const
  65 {
  66     return m_tagStr.isEmpty();
  67 }
  68
  69 QString Tag::toString() const noexcept
  70 {
  71     return m_tagStr;
  72 }
  73
  74 Tag::operator QString() const noexcept
  75 {
  76     return toString();
  77 }
  78
  79 QDataStream &operator<<(QDataStream &out, const Tag &tag)
  80 {
  81     out << tag.toString();
  82     return out;
  83 }
  84
  85 QDataStream &operator>>(QDataStream &in, Tag &tag)
  86 {
  87     QString tagStr;
  88     in >> tagStr;
  89     tag = Tag(tagStr);
  90     return in;
  91 }