debugger: make output format of non-printable characters customizable

src/plugins/debugger/watchhandler.cpp

@@ -79,6 +79,7 @@ static int generationCounter = 0;
 
 QHash<QByteArray, int> WatchHandler::m_watcherNames;
 QHash<QByteArray, int> WatchHandler::m_typeFormats;
+int WatchHandler::m_unprintableBase = 0;
 
 ////////////////////////////////////////////////////////////////////
 //
@@ -627,21 +628,41 @@ QVariant WatchModel::data(const QModelIndex &idx, int role) const
 
         case Qt::DisplayRole: {
             const QByteArray ns = engine()->qtNamespace();
+            QString result;
             switch (idx.column()) {
                 case 0:
                     if (data.name.isEmpty())
-                        return tr("<Edit>");
-                    if (data.name == QLatin1String("*") && item->parent)
-                        return QVariant(QLatin1Char('*') + item->parent->name);
-                    return removeInitialNamespace(data.name, ns);
+                        result = tr("<Edit>");
+                    else if (data.name == QLatin1String("*") && item->parent)
+                        result = QLatin1Char('*') + item->parent->name;
+                    else
+                        result = removeInitialNamespace(data.name, ns);
+                    break;
                 case 1:
-                    return removeInitialNamespace(truncateValue(
+                    result = removeInitialNamespace(truncateValue(
                             formattedValue(data, itemFormat(data))), ns);
+                    break;
                 case 2:
-                    return removeNamespaces(displayType(data), ns);
+                    result = removeNamespaces(displayType(data), ns);
+                    break;
                 default:
                     break;
             }
+            if (WatchHandler::m_unprintableBase == 0)
+                return result;
+            QString encoded;
+            foreach (const QChar c, result) {
+                if (c.isPrint()) {
+                    encoded += c;
+                } else if (WatchHandler::m_unprintableBase == 8) {
+                    encoded += QString("\\%1")
+                        .arg(c.unicode(), 3, 8, QLatin1Char('0'));
+                } else {
+                    encoded += QString("\\u%1")
+                        .arg(c.unicode(), 4, 16, QLatin1Char('0'));
+                }
+            }
+            return encoded;
         }
 
         case Qt::ToolTipRole:
@@ -1092,11 +1113,11 @@ WatchHandler::WatchHandler(DebuggerEngine *engine)
     m_tooltips = new WatchModel(this, TooltipsWatch);
 
     connect(debuggerCore()->action(ShowStdNamespace),
-        SIGNAL(triggered()), this, SLOT(emitAllChanged()));
+        SIGNAL(triggered()), SLOT(emitAllChanged()));
     connect(debuggerCore()->action(ShowQtNamespace),
-        SIGNAL(triggered()), this, SLOT(emitAllChanged()));
+        SIGNAL(triggered()), SLOT(emitAllChanged()));
     connect(debuggerCore()->action(SortStructMembers),
-        SIGNAL(triggered()), this, SLOT(emitAllChanged()));
+        SIGNAL(triggered()), SLOT(emitAllChanged()));
 }
 
 void WatchHandler::beginCycle(bool fullCycle)

src/plugins/debugger/watchhandler.h

@@ -180,6 +180,9 @@ public:
 
     void addTypeFormats(const QByteArray &type, const QStringList &formats);
 
+    void setUnprintableBase(int base) { m_unprintableBase = base; }
+    int unprintableBase() const { return m_unprintableBase; }
+
     QByteArray watcherName(const QByteArray &exp);
     void synchronizeWatchers();
     QString editorContents();
@@ -214,6 +217,7 @@ private:
     WatchModel *m_watchers;
     WatchModel *m_tooltips;
     DebuggerEngine *m_engine;
+    static int m_unprintableBase;
 };
 
 } // namespace Internal

src/plugins/debugger/watchwindow.cpp

@@ -286,14 +286,31 @@ void WatchWindow::contextMenuEvent(QContextMenuEvent *ev)
         mi0.data(LocalsIndividualFormatRole).toInt();
     const int effectiveIndividualFormat =
         individualFormat == -1 ? typeFormat : individualFormat;
+    const int unprintableBase = handler->unprintableBase();
 
     QMenu formatMenu;
     QList<QAction *> typeFormatActions;
     QList<QAction *> individualFormatActions;
     QAction *clearTypeFormatAction = 0;
     QAction *clearIndividualFormatAction = 0;
+    QAction *showUnprintableUnicode = 0;
+    QAction *showUnprintableOctal = 0;
+    QAction *showUnprintableHexadecimal = 0;
     formatMenu.setTitle(tr("Change Display Format..."));
-    if (idx.isValid() && !alternativeFormats.isEmpty()) {
+    if (true /*idx.isValid() && !alternativeFormats.isEmpty() */) {
+        showUnprintableUnicode =
+            formatMenu.addAction(tr("Treat All Characters as Printable"));
+        showUnprintableUnicode->setCheckable(true);
+        showUnprintableUnicode->setChecked(unprintableBase == 0);
+        showUnprintableOctal =
+            formatMenu.addAction(tr("Show Unprintable Characters as Octal"));
+        showUnprintableOctal->setCheckable(true);
+        showUnprintableOctal->setChecked(unprintableBase == 8);
+        showUnprintableHexadecimal =
+            formatMenu.addAction(tr("Show Unprintable Characters as Hexadecimal"));
+        showUnprintableHexadecimal->setCheckable(true);
+        showUnprintableHexadecimal->setChecked(unprintableBase == 16);
+        formatMenu.addSeparator();
         QAction *dummy = formatMenu.addAction(
             tr("Change Display for Type \"%1\"").arg(type));
         dummy->setEnabled(false);
@@ -515,6 +532,12 @@ void WatchWindow::contextMenuEvent(QContextMenuEvent *ev)
     } else if (act == actShowInEditor) {
         QString contents = handler->editorContents();
         debuggerCore()->openTextEditor(tr("Locals & Watchers"), contents);
+    } else if (act == showUnprintableUnicode) {
+        handler->setUnprintableBase(0);
+    } else if (act == showUnprintableOctal) {
+        handler->setUnprintableBase(8);
+    } else if (act == showUnprintableHexadecimal) {
+        handler->setUnprintableBase(16);
     } else {
         for (int i = 0; i != typeFormatActions.size(); ++i) {
             if (act == typeFormatActions.at(i))

tests/manual/gdbdebugger/simple/simple_gdbtest_app.cpp

@@ -2060,6 +2060,14 @@ struct Ty
 };
 
 void testStuff()
+{
+    char *x = "0\032\0333";
+    char *y = "0\032\0333";
+    char *z = "0\032\0333";
+    int i = 1;
+}
+
+void testStuff5()
 {
     using namespace std;
     typedef map<string, list<string> > map_t;