Added abandoned KDE3 version of kdiff3

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kdiff3@1088041 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 77 insertions, 0 deletions

diff --git a/diff_ext_for_kdiff3/class_factory.cpp b/diff_ext_for_kdiff3/class_factory.cpp
new file mode 100644
index 0000000..0618862
--- /dev/null
+++ b/diff_ext_for_kdiff3/class_factory.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2003, Sergey Zorin. All rights reserved.
+ *
+ * This software is distributable under the BSD license. See the terms
+ * of the BSD license in the LICENSE file provided with this software.
+ *
+ */
+
+#include "class_factory.h"
+#include "diff_ext.h"
+#include "server.h"
+
+CLASS_FACTORY::CLASS_FACTORY() {
+  _ref_count = 0L;
+
+  SERVER::instance()->lock();
+}
+
+CLASS_FACTORY::~CLASS_FACTORY() {
+  SERVER::instance()->release();
+}
+
+STDMETHODIMP 
+CLASS_FACTORY::QueryInterface(REFIID riid, void** ppv) {
+  HRESULT ret = E_NOINTERFACE;
+  *ppv = 0;
+
+  if(IsEqualIID(riid, IID_IUnknown) || IsEqualIID(riid, IID_IClassFactory)) {
+    *ppv = static_cast<CLASS_FACTORY*>(this);
+
+    AddRef();
+
+    ret = NOERROR;
+  }
+
+  return ret;
+}
+
+STDMETHODIMP_(ULONG) 
+CLASS_FACTORY::AddRef() {
+  return InterlockedIncrement((LPLONG)&_ref_count);
+}
+
+STDMETHODIMP_(ULONG) 
+CLASS_FACTORY::Release() {
+  ULONG ret = 0L;
+  
+  if(InterlockedDecrement((LPLONG)&_ref_count) != 0)
+    ret = _ref_count;
+  else
+    delete this;
+
+  return ret;
+}
+
+STDMETHODIMP 
+CLASS_FACTORY::CreateInstance(IUnknown* outer, REFIID refiid, void** obj) {
+  HRESULT ret = CLASS_E_NOAGGREGATION;
+  *obj = 0;
+
+  // Shell extensions typically don't support aggregation (inheritance)
+  if(outer == 0) {
+    DIFF_EXT* ext = new DIFF_EXT();
+  
+    if(ext == 0)
+      ret = E_OUTOFMEMORY;    
+    else
+      ret = ext->QueryInterface(refiid, obj);
+  }
+  
+  return ret;
+}
+
+STDMETHODIMP 
+CLASS_FACTORY::LockServer(BOOL) {
+  return NOERROR;
+}