File indexing completed on 2024-09-22 05:02:10

 /*
     SPDX-FileCopyrightText: 2007 Paolo Capriotti <p.capriotti@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "suffixcheck.h"
 
 #include <mutex>
 
 #include <QImageReader>
 #include <QMimeDatabase>
 #include <QSet>
 
 namespace
 {
 constinit QStringList s_suffixes;
 constinit std::once_flag s_onceFlag;
 
 void fillSuffixes()
 {
     Q_ASSERT(s_suffixes.empty());
 
     QSet<QString> suffixeSet;
     QMimeDatabase db;
     const auto supportedMimeTypes = QImageReader::supportedMimeTypes();
 
     for (const QByteArray &mimeType : supportedMimeTypes) {
         QMimeType mime(db.mimeTypeForName(QString::fromLatin1(mimeType)));
         const QStringList globPatterns = mime.globPatterns();
 
         for (const QString &pattern : globPatterns) {
             suffixeSet.insert(pattern);
         }
     }
 
     s_suffixes = suffixeSet.values();
 }
 }
 
 const QStringList &suffixes()
 {
     std::call_once(s_onceFlag, &fillSuffixes);
     return s_suffixes;
 }
 
 bool isAcceptableSuffix(QString &&suffix)
 {
     // Despite its name, suffixes() returns a list of glob patterns.
     // Therefore the file suffix check needs to include the "*." prefix.
     std::call_once(s_onceFlag, &fillSuffixes);
     return s_suffixes.contains(QLatin1String("*.%1").arg(std::move(suffix).toLower()));
 }