Initial community commit

Src/nde/Int128Field.cpp

@@ -0,0 +1,126 @@
+/* ---------------------------------------------------------------------------
+                           Nullsoft Database Engine
+                             --------------------
+                        codename: Near Death Experience
+--------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+
+ Int128Field Class
+Field data layout:
+[16 bytes] value
+--------------------------------------------------------------------------- */
+
+#include "nde.h"
+#include "Int128Field.h"
+#include <time.h>
+
+//---------------------------------------------------------------------------
+Int128Field::Int128Field(void *data)
+{
+	InitField();
+	Type = FIELD_INT128;
+	memcpy(Value, data, 16);
+}
+
+//---------------------------------------------------------------------------
+void Int128Field::InitField(void)
+{
+	Type = FIELD_INT128;
+	memset(Value, 0, 16);
+}
+
+//---------------------------------------------------------------------------
+Int128Field::Int128Field()
+{
+	InitField();
+}
+
+//---------------------------------------------------------------------------
+Int128Field::~Int128Field()
+{
+}
+
+//---------------------------------------------------------------------------
+void Int128Field::ReadTypedData(const uint8_t *data, size_t len)
+{
+	if (len < 16) return;
+	memcpy(Value, data, 16);
+}
+
+//---------------------------------------------------------------------------
+void Int128Field::WriteTypedData(uint8_t *data, size_t len)
+{
+
+	if (len < 16) return;
+	memcpy(data, Value, 16);
+}
+
+//---------------------------------------------------------------------------
+void *Int128Field::GetValue(void)
+{
+	return Value;
+}
+
+//---------------------------------------------------------------------------
+void Int128Field::SetValue(const void *Val)
+{
+	memcpy(Value, Val, 16);
+}
+
+//---------------------------------------------------------------------------
+size_t Int128Field::GetDataSize(void)
+{
+	return 16;
+}
+
+//---------------------------------------------------------------------------
+int Int128Field::Compare(Field *Entry)
+{
+	if (!Entry) return -1;
+	return memcmp(Value, ((Int128Field*)Entry)->GetValue(), 16);
+}
+
+static char zerobuf[16]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+//---------------------------------------------------------------------------
+bool Int128Field::ApplyFilter(Field *Data, int op)
+{
+	void *p = ((Int128Field *)Data)->GetValue();
+	void *d = Value;
+	if (!p)
+		p = zerobuf;
+	if (!d)
+		d = zerobuf;
+	bool r;
+	switch (op)
+	{
+		case FILTER_EQUALS:
+			r = !memcmp(d, p, 16);
+			break;
+		case FILTER_CONTAINS:
+			r = !memcmp(d, p, 16);
+			break;
+		case FILTER_ABOVE:
+			r = (memcmp(d, p, 16) > 0);
+			break;
+		case FILTER_BELOW:
+			r = (memcmp(d, p, 16) < 0);
+			break;
+		case FILTER_BELOWOREQUAL:
+			r = (memcmp(d, p, 16) <= 0);
+			break;
+		case FILTER_ABOVEOREQUAL:
+			r = (memcmp(d, p, 16) >= 0);
+			break;
+		case FILTER_ISEMPTY:
+			r = !d || (!memcmp(d, zerobuf, 16));
+			break;
+		case FILTER_ISNOTEMPTY:
+			r = d && (memcmp(d, zerobuf, 16));
+			break;
+		default:
+			r = true;
+			break;
+	}
+	return r;
+}