Initial community commit

Src/nde/win/IndexField.cpp

@@ -0,0 +1,145 @@
+/* ---------------------------------------------------------------------------
+Nullsoft Database Engine
+--------------------
+codename: Near Death Experience
+--------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+
+IndexField Class
+Windows implementation
+
+Field data layout
+[4 bytes] Position
+[4 bytes] Data Type
+[1 byte] Name Length
+[Name Length bytes] Name (UTF-8)
+--------------------------------------------------------------------------- */
+
+#include "../nde.h"
+#include "../ndestring.h"
+//---------------------------------------------------------------------------
+IndexField::IndexField(unsigned char id, int Pos, int type, const wchar_t *FieldName)
+{
+	InitField();
+	Type = FIELD_INDEX;
+	Name = ndestring_wcsdup(FieldName);
+	ID = id;
+	Position = Pos;
+	DataType = type;
+}
+
+//---------------------------------------------------------------------------
+void IndexField::InitField(void)
+{
+	index = 0;
+	Type = FIELD_INDEX;
+	Name = NULL;
+	ID = 0;
+	Position = -1;
+	DataType = FIELD_UNKNOWN;
+}
+
+//---------------------------------------------------------------------------
+IndexField::IndexField()
+{
+	InitField();
+}
+
+//---------------------------------------------------------------------------
+IndexField::~IndexField()
+{
+	ndestring_release(Name);
+	delete index;
+}
+
+//---------------------------------------------------------------------------
+void IndexField::ReadTypedData(const uint8_t *data, size_t len)
+{
+	unsigned char c;
+	int pos=0;
+	CHECK_INT(len);
+	Position = GET_INT(); pos += 4;
+	CHECK_INT(len);
+	DataType = GET_INT(); pos += 4;
+	CHECK_CHAR(len);
+	c = GET_CHAR(); pos++;
+	if (c)
+	{
+		CHECK_BIN(len, c);
+
+		int string_length = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)(data+pos), c, 0, 0);
+		Name = ndestring_malloc((string_length+1)*sizeof(wchar_t));
+		MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)(data+pos), c, Name, string_length);
+		Name[string_length]=0;
+	}
+}
+
+//---------------------------------------------------------------------------
+void IndexField::WriteTypedData(uint8_t *data, size_t len)
+{
+	int pos=0;
+	CHECK_INT(len);
+	PUT_INT(Position); pos += 4;
+
+	CHECK_INT(len);
+	PUT_INT(DataType); pos += 4;
+	CHECK_CHAR(len);
+	
+	CHECK_CHAR(len);
+
+	if (Name) 
+	{
+		size_t string_length = WideCharToMultiByte(CP_UTF8, 0, Name, -1, 0, 0, 0, 0);
+		if (string_length)
+		{
+			PUT_CHAR((uint8_t)string_length-1);
+			pos++;
+
+			CHECK_BIN(len, string_length-1);		
+			WideCharToMultiByte(CP_UTF8, 0, Name, -1, (LPSTR)(data+pos), (int)string_length-1, 0, 0);
+		}
+		else
+		{
+			PUT_CHAR(0);
+		}
+	}
+	else
+	{
+		PUT_CHAR(0);
+	}
+}
+
+//---------------------------------------------------------------------------
+wchar_t *IndexField::GetIndexName(void)
+{
+	return Name;
+}
+
+//---------------------------------------------------------------------------
+size_t IndexField::GetDataSize(void)
+{
+	size_t s=9;
+	if (Name)
+	{
+		int string_length=WideCharToMultiByte(CP_UTF8, 0, Name, -1, 0, 0, 0, 0);
+		if (string_length)
+			s+=string_length-1;
+	}
+	s++;
+	return s;
+}
+
+//---------------------------------------------------------------------------
+int IndexField::Compare(Field * /*Entry*/)
+{
+	return 0;
+}
+
+//---------------------------------------------------------------------------
+int IndexField::TranslateToIndex(int Id, IndexField *toindex)
+{
+	if (index && toindex && toindex->index)
+		return index->TranslateIndex(Id, toindex->index);
+	return -1;
+}