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/* ---------------------------------------------------------------------------
Nullsoft Database Engine
--------------------
codename: Near Death Experience
--------------------------------------------------------------------------- */
/* ---------------------------------------------------------------------------
ColumnField Class
Windows implementation
Field data layout:
[1 byte] Field Type
[1 byte] Unused (maybe convert to 'searchable')
[1 byte] Name Length
[Name Length bytes] Name (UTF-8)
--------------------------------------------------------------------------- */
#include "../nde.h"
//---------------------------------------------------------------------------
ColumnField::ColumnField(unsigned char FieldID, const wchar_t *FieldName, unsigned char FieldType, Table *parentTable)
{
InitField();
Type = FIELD_COLUMN;
MyType = FieldType;
Name = ndestring_wcsdup(FieldName);
ID = FieldID;
}
//---------------------------------------------------------------------------
void ColumnField::InitField(void)
{
searchable = false;
MyType = FIELD_UNKNOWN;
Type = FIELD_COLUMN;
Name = NULL;
ID = 0;
}
//---------------------------------------------------------------------------
ColumnField::ColumnField()
{
InitField();
}
//---------------------------------------------------------------------------
ColumnField::~ColumnField()
{
ndestring_release(Name);
}
void ColumnField::SetSearchable(bool val)
{
searchable=val;
}
bool ColumnField::IsSearchableField() const
{
return searchable;
}
//---------------------------------------------------------------------------
void ColumnField::ReadTypedData(const uint8_t *data, size_t len)
{
unsigned char c;
int pos=0;
// [1 byte] Field Type
CHECK_CHAR(len);
MyType = GET_CHAR();
pos++;
// [1 byte] unused
CHECK_CHAR(len);
//cut: indexUnique = (BOOL)GET_CHAR();
pos++;
// [1 byte] string length
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 ColumnField::WriteTypedData(uint8_t *data, size_t len)
{
int pos = 0;
// [1 byte] Field Type
CHECK_CHAR(len);
PUT_CHAR(MyType);
pos++;
// [1 byte] unused
CHECK_CHAR(len);
PUT_CHAR(0/*(char)indexUnique*/);
pos++;
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);
}
}
//---------------------------------------------------------------------------
unsigned char ColumnField::GetDataType(void)
{
return MyType;
}
//---------------------------------------------------------------------------
void ColumnField::SetDataType(unsigned char type)
{
if ((MyType == FIELD_INTEGER || MyType == FIELD_BOOLEAN || MyType == FIELD_DATETIME || MyType == FIELD_LENGTH || MyType == FIELD_INT64) &&
(type == FIELD_INTEGER || type == FIELD_BOOLEAN || type == FIELD_DATETIME || type == FIELD_LENGTH || type == FIELD_INT64)) {
MyType = type;
}
// going from string to filename or filename to string is OK
if ((MyType == FIELD_FILENAME && type == FIELD_STRING)
|| (MyType == FIELD_STRING && type == FIELD_FILENAME))
{
MyType = type;
}
}
//---------------------------------------------------------------------------
wchar_t *ColumnField::GetFieldName(void)
{
return Name;
}
//---------------------------------------------------------------------------
void ColumnField::SetFieldName(wchar_t *name)
{
if (Name) ndestring_release(Name);
Name = ndestring_wcsdup(name);
}
//---------------------------------------------------------------------------
size_t ColumnField::GetDataSize(void)
{
size_t s=3;
if (Name)
{
int string_length=WideCharToMultiByte(CP_UTF8, 0, Name, -1, 0, 0, 0, 0);
if (string_length)
s+=string_length-1;
}
return s;
}
//---------------------------------------------------------------------------
int ColumnField::Compare(Field * /*Entry*/)
{
return 0;
}
|
