Initial community commit

Src/nde/Field.h

@@ -0,0 +1,110 @@
+/* ---------------------------------------------------------------------------
+Nullsoft Database Engine
+--------------------
+codename: Near Death Experience
+--------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+
+Field Class Prototypes
+
+--------------------------------------------------------------------------- */
+
+#ifndef __FIELD_H
+#define __FIELD_H
+
+#ifdef __ANDROID__
+#include <foundation/types.h> // TODO
+#else
+#include <bfc/platform/types.h>
+#endif
+
+class Table;
+#include <stdio.h>
+
+#define PUT_INT(y) data[pos]=(uint8_t)(y&255); data[pos+1]=(uint8_t)((y>>8)&255); data[pos+2]=(uint8_t)((y>>16)&255); data[pos+3]=(uint8_t)((y>>24)&255)
+#define GET_INT() (int)(data[pos]|(data[pos+1]<<8)|(data[pos+2]<<16)|(data[pos+3]<<24))
+#define PUT_SHORT(y) data[pos]=(uint8_t)(y&255); data[pos+1]=(uint8_t)((y>>8)&255);
+#define GET_SHORT() (uint16_t)(data[pos]|(data[pos+1]<<8))
+#define PUT_PINT(y) data[*pos]=(uint8_t)(y&255); data[*pos+1]=(uint8_t)((y>>8)&255); data[*pos+2]=(uint8_t)((y>>16)&255); data[*pos+3]=(uint8_t)((y>>24)&255)
+extern float GET_FLOAT(const uint8_t *data, size_t pos);
+extern void PUT_FLOAT(float f, uint8_t *data, size_t pos);
+extern void PUT_BINARY(uint8_t *dest, const uint8_t *src, size_t size, size_t pos);
+extern void GET_BINARY(uint8_t *dest, const uint8_t *src, size_t size, size_t pos);
+#define PUT_CHAR(y) data[pos]=y
+#define GET_CHAR() data[pos]
+#define CHECK_CHAR(l) { if (l < 1) return; l--; }
+#define CHECK_INT(l) { if (l < 4) return; l-=4; }
+#define CHECK_INT64(l) { if (l < 8) return; l-=8; }
+#define CHECK_SHORT(l) { if (l < 2) return; l-=2; }
+#define CHECK_BIN(l, size) { if (l < size) return; l-=size; }
+
+#ifdef ASSERT
+#undef ASSERT
+#endif
+#define ASSERT(x) { \
+	if (!(x)) \
+	OutputDebugString("Assertion failed "); \
+}
+
+#define _CHECK_CHAR(l) { ASSERT(l >= 1); l-=1; }
+#define _CHECK_INT(l) { ASSERT(l >= 4); l-=4; }
+#define _CHECK_SHORT(l) { ASSERT(l >= 2); l-=2; }
+#define _CHECK_BIN(l, size) { ASSERT(l >= size); l-=size; }
+
+class Field //: public wa::lists::node_ptr
+{
+public:
+	Field();
+	virtual ~Field();
+	virtual Field *Clone(Table *pTable);
+	unsigned char GetFieldId(void)
+	{
+		return ID;
+	}
+	int GetType();
+	size_t GetTotalSize();
+	Field(int FieldPos);
+	Field *ReadField(Table *pTable, int pos, uint32_t *next_position=0);
+	Field *ReadField(Table *pTable, int pos, bool readTyped, uint32_t *next_position=0);
+	void WriteField(Table *pTable, Field *previous_field, Field *next_field);
+	virtual void ReadTypedData(const uint8_t *, size_t /*len*/) { };
+	virtual void WriteTypedData(uint8_t *, size_t) { };
+	virtual size_t GetDataSize(void)
+	{
+		return 0;
+	}
+	virtual int Compare(Field * /*Entry*/)
+	{
+		return 0;
+	}
+	virtual int Starts(Field * /*Entry*/)
+	{
+		return 0;
+	}
+	virtual int Contains(Field * /*Entry*/)
+	{
+		return 0;
+	}
+	virtual bool ApplyFilter(Field * /*Data*/, int /*flags*/) 
+	{
+		return false;
+	}
+	uint32_t GetFieldPos(void);
+	void InitField(void);
+	union
+	{
+		struct
+		{
+			uint8_t ID;
+			uint8_t Type;
+		};
+		uint32_t _dummy_union_thingy;
+	};
+protected:
+	uint32_t Pos;
+
+	uint32_t MaxSizeOnDisk;
+};
+
+#endif