qt: Do proper boost::path conversion

Convert from QString unicode from/to the OS-dependent locale
as used by boost::filesystem::path as needed.

Solves #3916.

1 files changed, 31 insertions, 1 deletions

diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index 4a4fece3e1..26c56c5be8 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -33,6 +33,9 @@
 
 #include <boost/filesystem.hpp>
 #include <boost/filesystem/fstream.hpp>
+#if BOOST_FILESYSTEM_VERSION >= 3
+#include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
+#endif
 
 #include <QAbstractItemView>
 #include <QApplication>
@@ -54,6 +57,10 @@
 #include <QUrlQuery>
 #endif
 
+#if BOOST_FILESYSTEM_VERSION >= 3
+static boost::filesystem::detail::utf8_codecvt_facet utf8;
+#endif
+
 namespace GUIUtil {
 
 QString dateTimeStr(const QDateTime &date)
@@ -352,7 +359,7 @@ void openDebugLogfile()
 
     /* Open debug.log with the associated application */
     if (boost::filesystem::exists(pathDebug))
-        QDesktopServices::openUrl(QUrl::fromLocalFile(QString::fromStdString(pathDebug.string())));
+        QDesktopServices::openUrl(QUrl::fromLocalFile(boostPathToQString(pathDebug)));
 }
 
 ToolTipToRichTextFilter::ToolTipToRichTextFilter(int size_threshold, QObject *parent) :
@@ -718,4 +725,27 @@ void setClipboard(const QString& str)
     QApplication::clipboard()->setText(str, QClipboard::Selection);
 }
 
+#if BOOST_FILESYSTEM_VERSION >= 3
+boost::filesystem::path qstringToBoostPath(const QString &path)
+{
+    return boost::filesystem::path(path.toStdString(), utf8);
+}
+
+QString boostPathToQString(const boost::filesystem::path &path)
+{
+    return QString::fromStdString(path.string(utf8));
+}
+#else
+#warning Conversion between boost path and QString can use invalid character encoding with boost_filesystem v2 and older
+boost::filesystem::path qstringToBoostPath(const QString &path)
+{
+    return boost::filesystem::path(path.toStdString());
+}
+
+QString boostPathToQString(const boost::filesystem::path &path)
+{
+    return QString::fromStdString(path.string());
+}
+#endif
+
 } // namespace GUIUtil