Initial community commit

Src/nde/win/BinaryField.cpp

@@ -0,0 +1,172 @@
+/* ---------------------------------------------------------------------------
+                           Nullsoft Database Engine
+                             --------------------
+                        codename: Near Death Experience
+--------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+
+ BinaryField Class
+Field data layout:
+[2 bytes] length
+[length bytes] binary data
+--------------------------------------------------------------------------- */
+
+#include "../nde.h"
+#include "BinaryField.h"
+#include "../NDEString.h"
+//---------------------------------------------------------------------------
+BinaryField::BinaryField(const uint8_t *_Data, int len)
+{
+	InitField();
+	Type = FIELD_BINARY;
+	if (_Data && len > 0)
+	{
+		Data = (uint8_t *)ndestring_malloc(len);
+		memcpy(Data, _Data, len);
+		Size = len;
+	}
+}
+
+//---------------------------------------------------------------------------
+void BinaryField::InitField(void)
+{
+	Type = FIELD_BINARY;
+	Data = NULL;
+	Size = 0;
+}
+
+//---------------------------------------------------------------------------
+BinaryField::BinaryField()
+{
+	InitField();
+}
+
+//---------------------------------------------------------------------------
+BinaryField::~BinaryField()
+{
+	ndestring_release((wchar_t *)Data);
+}
+
+//---------------------------------------------------------------------------
+void BinaryField::ReadTypedData(const uint8_t *data, size_t len)
+{
+	unsigned short c;
+	int pos = 0;
+
+	CHECK_SHORT(len);
+
+	c = GET_SHORT(); pos += 2; 
+	if (c && c<=len)
+	{
+		Size = c;
+		ndestring_release((wchar_t *)Data);
+		Data = (uint8_t *)ndestring_malloc(c);
+		GET_BINARY(Data, data, c, pos);
+	}
+}
+
+//---------------------------------------------------------------------------
+void BinaryField::WriteTypedData(uint8_t *data, size_t len)
+{
+	size_t pos = 0;
+
+	CHECK_SHORT(len); 
+
+	if (Data && Size<=len)
+	{
+		unsigned short c = (unsigned short)Size;
+		PUT_SHORT(c); pos += 2;
+		if (Data)
+			PUT_BINARY(data, (unsigned char*)Data, c, pos);
+	}
+	else
+	{
+		PUT_SHORT(0);
+	}
+}
+
+//---------------------------------------------------------------------------
+const uint8_t *BinaryField::GetData(size_t *len)
+{
+	if (len)
+		*len = Size;
+	return Data;
+}
+
+//---------------------------------------------------------------------------
+void BinaryField::SetData(const uint8_t *_Data, size_t len)
+{
+	if (!_Data || !len) return;
+	ndestring_release((wchar_t *)Data);
+	Size = 0;
+	Data = (uint8_t *)ndestring_malloc(len);
+	memcpy(Data, _Data, len);
+	Size = len;
+}
+
+//---------------------------------------------------------------------------
+size_t BinaryField::GetDataSize(void)
+{
+	if (!Data) return 2;
+	return Size + 2;
+}
+
+//---------------------------------------------------------------------------
+int BinaryField::Compare(Field *Entry)
+{
+	if (!Entry) return -1;
+	size_t compare_length;
+	const uint8_t *compare_data = ((BinaryField*)Entry)->GetData(&compare_length);
+	return memcmp(Data, compare_data, min(compare_length, Size));
+}
+
+//---------------------------------------------------------------------------
+bool BinaryField::ApplyFilter(Field *FilterData, int op)
+{
+	size_t l, s;
+	const uint8_t *p = ((BinaryField *)FilterData)->GetData(&l);
+	const uint8_t *d = GetData(&s);
+	if (!p)
+		p = (const uint8_t *)"";
+	if (!d)
+		d = (const uint8_t *)"";
+	bool r;
+	switch (op)
+	{
+		case FILTER_EQUALS:
+			if (l != s)
+				r = false;
+			else
+				r = !memcmp(d, p, min(s, l));
+			break;
+		case FILTER_CONTAINS:
+			if (l > s)
+				r = FALSE;
+			else
+				r = !!memmem(d, p, s, l);
+			break;
+		case FILTER_ABOVE:
+			r = (memcmp(d, p, min(s, l)) > 0);
+			break;
+		case FILTER_BELOW:
+			r = (memcmp(d, p, min(s, l)) < 0);
+			break;
+		case FILTER_BELOWOREQUAL:
+			r = (memcmp(d, p, min(s, l)) <= 0);
+			break;
+		case FILTER_ABOVEOREQUAL:
+			r = (memcmp(d, p, min(s, l)) >= 0);
+			break;
+		case FILTER_ISEMPTY:
+			r = (s == 0);
+			break;
+		case FILTER_ISNOTEMPTY:
+			r = (s != 0);
+			break;
+		default:
+			r = true;
+			break;
+	}
+	return r;
+}