Revert "Use QRegularExpression instead of deprecated QRegExp"

Related to #14611

This reverts commit 3b748178c2.

src/app/qtlocalpeer/qtlocalpeer.cpp

@@ -79,7 +79,6 @@
 #include <QDir>
 #include <QLocalServer>
 #include <QLocalSocket>
-#include <QRegularExpression>
 
 #include "base/utils/misc.h"
 
@@ -109,7 +108,7 @@ QtLocalPeer::QtLocalPeer(QObject* parent, const QString &appId)
 #endif
         prefix = id.section(QLatin1Char('/'), -1);
     }
-    prefix.remove(QRegularExpression("[^a-zA-Z]"));
+    prefix.remove(QRegExp("[^a-zA-Z]"));
     prefix.truncate(6);
 
     QByteArray idc = id.toUtf8();

src/base/rss/rss_autodownloadrule.cpp

@@ -213,8 +213,10 @@ QRegularExpression AutoDownloadRule::cachedRegex(const QString &expression, cons
     QRegularExpression &regex = m_dataPtr->cachedRegexes[expression];
     if (regex.pattern().isEmpty())
     {
-        const QString pattern = (isRegex ? expression : Utils::String::wildcardToRegexPattern(expression));
+        regex = QRegularExpression
-        regex = QRegularExpression {pattern, QRegularExpression::CaseInsensitiveOption};
+        {
+                (isRegex ? expression : Utils::String::wildcardToRegex(expression))
+                , QRegularExpression::CaseInsensitiveOption};
     }
 
     return regex;

src/base/rss/rss_parser.cpp

@@ -34,7 +34,7 @@
 #include <QGlobalStatic>
 #include <QHash>
 #include <QMetaObject>
-#include <QRegularExpression>
+#include <QRegExp>
 #include <QStringList>
 #include <QVariant>
 #include <QXmlStreamEntityResolver>
@@ -391,13 +391,12 @@ namespace
         int nmin   = 8;
         int nsec   = 9;
         // Also accept obsolete form "Weekday, DD-Mon-YY HH:MM:SS ±hhmm"
-        QRegularExpression rx {"^(?:([A-Z][a-z]+),\\s*)?(\\d{1,2})(\\s+|-)([^-\\s]+)(\\s+|-)(\\d{2,4})\\s+(\\d\\d):(\\d\\d)(?::(\\d\\d))?\\s+(\\S+)$"};
+        QRegExp rx("^(?:([A-Z][a-z]+),\\s*)?(\\d{1,2})(\\s+|-)([^-\\s]+)(\\s+|-)(\\d{2,4})\\s+(\\d\\d):(\\d\\d)(?::(\\d\\d))?\\s+(\\S+)$");
-        QRegularExpressionMatch rxMatch;
         QStringList parts;
-        if (str.indexOf(rx, 0, &rxMatch) == 0)
+        if (!str.indexOf(rx))
         {
             // Check that if date has '-' separators, both separators are '-'.
-            parts = rxMatch.capturedTexts();
+            parts = rx.capturedTexts();
             const bool h1 = (parts[3] == QLatin1String("-"));
             const bool h2 = (parts[5] == QLatin1String("-"));
             if (h1 != h2)
@@ -406,10 +405,9 @@ namespace
         else
         {
             // Check for the obsolete form "Wdy Mon DD HH:MM:SS YYYY"
-            rx = QRegularExpression {"^([A-Z][a-z]+)\\s+(\\S+)\\s+(\\d\\d)\\s+(\\d\\d):(\\d\\d):(\\d\\d)\\s+(\\d\\d\\d\\d)$"};
+            rx = QRegExp("^([A-Z][a-z]+)\\s+(\\S+)\\s+(\\d\\d)\\s+(\\d\\d):(\\d\\d):(\\d\\d)\\s+(\\d\\d\\d\\d)$");
-            if (str.indexOf(rx, 0, &rxMatch) != 0)
+            if (str.indexOf(rx))
                 return QDateTime::currentDateTime();
-
             nyear  = 7;
             nmonth = 2;
             nday   = 3;
@@ -417,7 +415,7 @@ namespace
             nhour  = 4;
             nmin   = 5;
             nsec   = 6;
-            parts = rxMatch.capturedTexts();
+            parts = rx.capturedTexts();
         }
 
         bool ok[4];
@@ -465,11 +463,11 @@ namespace
         bool negOffset = false;
         if (parts.count() > 10)
         {
-            rx = QRegularExpression {"^([+-])(\\d\\d)(\\d\\d)$"};
+            rx = QRegExp("^([+-])(\\d\\d)(\\d\\d)$");
-            if (parts[10].indexOf(rx, 0, &rxMatch) == 0)
+            if (!parts[10].indexOf(rx))
             {
                 // It's a UTC offset ±hhmm
-                parts = rxMatch.capturedTexts();
+                parts = rx.capturedTexts();
                 offset = parts[2].toInt(&ok[0]) * 3600;
                 const int offsetMin = parts[3].toInt(&ok[1]);
                 if (!ok[0] || !ok[1] || offsetMin > 59)

src/base/utils/string.cpp

@@ -33,15 +33,10 @@
 
 #include <QCollator>
 #include <QLocale>
+#include <QRegExp>
 #include <QtGlobal>
 #include <QVector>
 
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
-#include <QRegularExpression>
-#else
-#include <QRegExp>
-#endif
-
 #if defined(Q_OS_MACOS) || defined(__MINGW32__)
 #define QBT_USES_QTHREADSTORAGE
 #include <QThreadStorage>
@@ -186,21 +181,14 @@ QString Utils::String::fromDouble(const double n, const int precision)
     return QLocale::system().toString(std::floor(n * prec) / prec, 'f', precision);
 }
 
-#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
-QString Utils::String::wildcardToRegexPattern(const QString &pattern)
-{
-    return QRegularExpression::wildcardToRegularExpression(pattern, QRegularExpression::UnanchoredWildcardConversion);
-}
-#else
 // This is marked as internal in QRegExp.cpp, but is exported. The alternative would be to
 // copy the code from QRegExp::wc2rx().
 QString qt_regexp_toCanonical(const QString &pattern, QRegExp::PatternSyntax patternSyntax);
 
-QString Utils::String::wildcardToRegexPattern(const QString &pattern)
+QString Utils::String::wildcardToRegex(const QString &pattern)
 {
     return qt_regexp_toCanonical(pattern, QRegExp::Wildcard);
 }
-#endif
 
 std::optional<bool> Utils::String::parseBool(const QString &string)
 {

src/base/utils/string.h

@@ -50,7 +50,7 @@ namespace Utils::String
         return (naturalCompare(left, right, caseSensitivity) < 0);
     }
 
-    QString wildcardToRegexPattern(const QString &pattern);
+    QString wildcardToRegex(const QString &pattern);
 
     template <typename T>
     T unquote(const T &str, const QString &quotes = QChar('"'))

src/gui/properties/propertieswidget.cpp

@@ -825,8 +825,7 @@ void PropertiesWidget::filteredFilesChanged()
 
 void PropertiesWidget::filterText(const QString &filter)
 {
-    const QString pattern = Utils::String::wildcardToRegexPattern(filter);
+    m_propListModel->setFilterRegExp(QRegExp(filter, Qt::CaseInsensitive, QRegExp::WildcardUnix));
-    m_propListModel->setFilterRegularExpression(QRegularExpression(pattern, QRegularExpression::CaseInsensitiveOption));
     if (filter.isEmpty())
     {
         m_ui->filesList->collapseAll();

src/gui/rss/automatedrssdownloader.cpp

@@ -719,14 +719,10 @@ void AutomatedRssDownloader::updateMustLineValidity()
     {
         QStringList tokens;
         if (isRegex)
-        {
             tokens << text;
-        }
         else
-        {
             for (const QString &token : asConst(text.split('|')))
-                tokens << Utils::String::wildcardToRegexPattern(token);
+                tokens << Utils::String::wildcardToRegex(token);
-        }
 
         for (const QString &token : asConst(tokens))
         {
@@ -766,14 +762,10 @@ void AutomatedRssDownloader::updateMustNotLineValidity()
     {
         QStringList tokens;
         if (isRegex)
-        {
             tokens << text;
-        }
         else
-        {
             for (const QString &token : asConst(text.split('|')))
-                tokens << Utils::String::wildcardToRegexPattern(token);
+                tokens << Utils::String::wildcardToRegex(token);
-        }
 
         for (const QString &token : asConst(tokens))
         {

src/gui/search/searchjobwidget.cpp

@@ -365,9 +365,9 @@ void SearchJobWidget::fillFilterComboBoxes()
 
 void SearchJobWidget::filterSearchResults(const QString &name)
 {
-    const QString pattern = (Preferences::instance()->getRegexAsFilteringPatternForSearchJob()
+    const QRegExp::PatternSyntax patternSyntax = Preferences::instance()->getRegexAsFilteringPatternForSearchJob()
-                    ? name : Utils::String::wildcardToRegexPattern(name));
+                    ? QRegExp::RegExp : QRegExp::WildcardUnix;
-    m_proxyModel->setFilterRegularExpression(QRegularExpression(pattern, QRegularExpression::CaseInsensitiveOption));
+    m_proxyModel->setFilterRegExp(QRegExp(name, Qt::CaseInsensitive, patternSyntax));
     updateResultsCount();
 }
 

src/gui/torrentcontentfiltermodel.cpp

@@ -129,7 +129,7 @@ bool TorrentContentFilterModel::hasFiltered(const QModelIndex &folder) const
     // this should be called only with folders
     // check if the folder name itself matches the filter string
     QString name = folder.data().toString();
-    if (name.contains(filterRegularExpression()))
+    if (name.contains(filterRegExp()))
         return true;
     for (int child = 0; child < m_model->rowCount(folder); ++child)
     {
@@ -141,7 +141,7 @@ bool TorrentContentFilterModel::hasFiltered(const QModelIndex &folder) const
             continue;
         }
         name = childIndex.data().toString();
-        if (name.contains(filterRegularExpression()))
+        if (name.contains(filterRegExp()))
             return true;
     }
 

src/gui/transferlistwidget.cpp

@@ -36,6 +36,7 @@
 #include <QHeaderView>
 #include <QMenu>
 #include <QMessageBox>
+#include <QRegExp>
 #include <QRegularExpression>
 #include <QSet>
 #include <QShortcut>
@@ -1130,9 +1131,9 @@ void TransferListWidget::applyTrackerFilter(const QSet<BitTorrent::TorrentID> &t
 
 void TransferListWidget::applyNameFilter(const QString &name)
 {
-    const QString pattern = (Preferences::instance()->getRegexAsFilteringPatternForTransferList()
+    const QRegExp::PatternSyntax patternSyntax = Preferences::instance()->getRegexAsFilteringPatternForTransferList()
-                ? name : Utils::String::wildcardToRegexPattern(name));
+                ? QRegExp::RegExp : QRegExp::WildcardUnix;
-    m_sortFilterModel->setFilterRegularExpression(QRegularExpression(pattern, QRegularExpression::CaseInsensitiveOption));
+    m_sortFilterModel->setFilterRegExp(QRegExp(name, Qt::CaseInsensitive, patternSyntax));
 }
 
 void TransferListWidget::applyStatusFilter(int f)

src/webui/webapplication.cpp

@@ -38,7 +38,7 @@
 #include <QMimeDatabase>
 #include <QMimeType>
 #include <QNetworkCookie>
-#include <QRegularExpression>
+#include <QRegExp>
 #include <QUrl>
 
 #include "base/algorithm.h"
@@ -693,7 +693,7 @@ bool WebApplication::validateHostHeader(const QStringList &domains) const
     // try matching host header with domain list
     for (const auto &domain : domains)
     {
-        const QRegularExpression domainRegex {Utils::String::wildcardToRegexPattern(domain), QRegularExpression::CaseInsensitiveOption};
+        QRegExp domainRegex(domain, Qt::CaseInsensitive, QRegExp::Wildcard);
         if (requestHost.contains(domainRegex))
             return true;
     }