implement copy instead of taking it from pvDataCPP; implement plugin support

src/copy/pvTimestampPlugin.cpp

@@ -0,0 +1,115 @@
+/* pvTimestampPlugin.cpp */
+/*
+ * The License for this software can be found in the file LICENSE that is included with the distribution.
+ */
+
+#include <pv/pvTimestampPlugin.h>
+#include <pv/convert.h>
+#include <pv/pvCopy.h>
+
+using std::string;
+using std::size_t;
+using std::cout;
+using std::endl;
+using std::tr1::static_pointer_cast;
+using std::vector;
+using namespace epics::pvData;
+
+namespace epics { namespace pvDatabase{
+
+static ConvertPtr convert = getConvert();
+static std::string name("timestamp");
+
+PVTimestampPlugin::PVTimestampPlugin()
+{
+}
+
+PVTimestampPlugin::~PVTimestampPlugin()
+{
+}
+
+void PVTimestampPlugin::create()
+{
+     PVTimestampPluginPtr pvPlugin = PVTimestampPluginPtr(new PVTimestampPlugin());
+     PVPluginRegistry::registerPlugin(name,pvPlugin);
+}
+
+PVFilterPtr PVTimestampPlugin::create(
+     const std::string & requestValue,
+     const PVCopyPtr & pvCopy,
+     const PVFieldPtr & master)
+{
+    return PVTimestampFilter::create(requestValue,master);
+}
+
+PVTimestampFilter::~PVTimestampFilter()
+{
+}
+
+
+PVTimestampFilterPtr PVTimestampFilter::create(
+     const std::string & requestValue,
+     const PVFieldPtr & master)
+{
+    PVTimeStamp pvTimeStamp;
+    if(!pvTimeStamp.attach(master)) return PVTimestampFilterPtr();
+    bool current = false;
+    bool copy = false;
+    if(requestValue.compare("current")==0) {
+        current = true;
+    } else if(requestValue.compare("copy")==0){
+        copy = true;
+    } else {
+        return  PVTimestampFilterPtr();
+    }
+    PVTimestampFilterPtr filter = PVTimestampFilterPtr(
+             new PVTimestampFilter(current,copy,master));
+    return filter;
+}
+
+PVTimestampFilter::PVTimestampFilter(bool current,bool copy,PVFieldPtr const & master)
+: current(current),
+  copy(copy),
+  master(master)
+{
+}
+
+
+bool PVTimestampFilter::filter(const PVFieldPtr & pvCopy,const BitSetPtr & bitSet,bool toCopy)
+{
+    if(current) {	
+        timeStamp.getCurrent();
+        if(toCopy) {
+            if(!pvTimeStamp.attach(pvCopy)) return false;
+        } else {
+            if(!pvTimeStamp.attach(master)) return false;
+        }
+        pvTimeStamp.set(timeStamp);
+        bitSet->set(pvCopy->getFieldOffset());
+        return true;
+     }
+     if(copy) {	
+        if(toCopy) {
+            if(!pvTimeStamp.attach(master)) return false;
+            pvTimeStamp.get(timeStamp);
+            if(!pvTimeStamp.attach(pvCopy)) return false;
+            pvTimeStamp.set(timeStamp);
+            bitSet->set(pvCopy->getFieldOffset());
+        } else {
+            if(!pvTimeStamp.attach(pvCopy)) return false;
+            pvTimeStamp.get(timeStamp);
+            if(!pvTimeStamp.attach(master)) return false;
+            pvTimeStamp.set(timeStamp);
+        }
+        return true;
+     }
+     return false;
+}
+
+string PVTimestampFilter::getName()
+{
+	return name;
+}
+
+}}
+