1 files changed, 115 insertions, 0 deletions
diff --git a/externals/qhexedit/commands.cpp b/externals/qhexedit/commands.cpp
new file mode 100644
index 000000000..303091d1d
--- /dev/null
+++ b/externals/qhexedit/commands.cpp
@@ -0,0 +1,115 @@
+#include "commands.h"
+
+CharCommand::CharCommand(XByteArray * xData, Cmd cmd, int charPos, char newChar, QUndoCommand *parent)
+    : QUndoCommand(parent)
+{
+    _xData = xData;
+    _charPos = charPos;
+    _newChar = newChar;
+    _cmd = cmd;
+}
+
+bool CharCommand::mergeWith(const QUndoCommand *command)
+{
+    const CharCommand *nextCommand = static_cast<const CharCommand *>(command);
+    bool result = false;
+
+    if (_cmd != remove)
+    {
+        if (nextCommand->_cmd == replace)
+            if (nextCommand->_charPos == _charPos)
+            {
+                _newChar = nextCommand->_newChar;
+                result = true;
+            }
+    }
+    return result;
+}
+
+void CharCommand::undo()
+{
+    switch (_cmd)
+    {
+        case insert:
+            _xData->remove(_charPos, 1);
+            break;
+        case replace:
+            _xData->replace(_charPos, _oldChar);
+            _xData->setDataChanged(_charPos, _wasChanged);
+            break;
+        case remove:
+            _xData->insert(_charPos, _oldChar);
+            _xData->setDataChanged(_charPos, _wasChanged);
+            break;
+    }
+}
+
+void CharCommand::redo()
+{
+    switch (_cmd)
+    {
+        case insert:
+            _xData->insert(_charPos, _newChar);
+            break;
+        case replace:
+            _oldChar = _xData->data()[_charPos];
+            _wasChanged = _xData->dataChanged(_charPos);
+            _xData->replace(_charPos, _newChar);
+            break;
+        case remove:
+            _oldChar = _xData->data()[_charPos];
+            _wasChanged = _xData->dataChanged(_charPos);
+            _xData->remove(_charPos, 1);
+            break;
+    }
+}
+
+
+
+ArrayCommand::ArrayCommand(XByteArray * xData, Cmd cmd, int baPos, QByteArray newBa, int len, QUndoCommand *parent)
+    : QUndoCommand(parent)
+{
+    _cmd = cmd;
+    _xData = xData;
+    _baPos = baPos;
+    _newBa = newBa;
+    _len = len;
+}
+
+void ArrayCommand::undo()
+{
+    switch (_cmd)
+    {
+        case insert:
+            _xData->remove(_baPos, _newBa.length());
+            break;
+        case replace:
+            _xData->replace(_baPos, _oldBa);
+            _xData->setDataChanged(_baPos, _wasChanged);
+            break;
+        case remove:
+            _xData->insert(_baPos, _oldBa);
+            _xData->setDataChanged(_baPos, _wasChanged);
+            break;
+    }
+}
+
+void ArrayCommand::redo()
+{
+    switch (_cmd)
+    {
+        case insert:
+            _xData->insert(_baPos, _newBa);
+            break;
+        case replace:
+            _oldBa = _xData->data().mid(_baPos, _len);
+            _wasChanged = _xData->dataChanged(_baPos, _len);
+            _xData->replace(_baPos, _newBa);
+            break;
+        case remove:
+            _oldBa = _xData->data().mid(_baPos, _len);
+            _wasChanged = _xData->dataChanged(_baPos, _len);
+            _xData->remove(_baPos, _len);
+            break;
+    }
+}