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/* ---------------------------------------------------------------------------
Nullsoft Database Engine
--------------------
codename: Near Death Experience
--------------------------------------------------------------------------- */
/* ---------------------------------------------------------------------------
IndexField Class
--------------------------------------------------------------------------- */
#include "nde.h"
//---------------------------------------------------------------------------
IndexField::IndexField(unsigned char id, int Pos, int type, CFStringRef FieldName)
{
InitField();
Type = FIELD_INDEX;
Name = (CFStringRef)CFRetain(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()
{
if (Name)
CFRelease(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);
if (Name)
CFRelease(Name);
Name = CFStringCreateWithBytes(kCFAllocatorDefault, data+pos, c, kCFStringEncodingUTF8, false);
}
}
//---------------------------------------------------------------------------
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);
if (Name)
{
CFIndex lengthRequired=0;
CFStringGetBytes(Name, CFRangeMake(0, CFStringGetLength(Name)), kCFStringEncodingUTF8, 0, false, NULL, 0, &lengthRequired);
CHECK_BIN(len, lengthRequired+1);
PUT_CHAR(lengthRequired); pos++;
CFStringGetBytes(Name, CFRangeMake(0, CFStringGetLength(Name)), kCFStringEncodingUTF8, 0, false, data+pos, lengthRequired, 0);
}
}
//---------------------------------------------------------------------------
CFStringRef IndexField::GetIndexName(void)
{
return Name;
}
//---------------------------------------------------------------------------
size_t IndexField::GetDataSize(void)
{
if (Name)
{
CFIndex lengthRequired=0;
CFStringGetBytes(Name, CFRangeMake(0, CFStringGetLength(Name)), kCFStringEncodingUTF8, 0, false, NULL, 0, &lengthRequired);
return lengthRequired+9;
}
else
return 9;
}
//---------------------------------------------------------------------------
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;
}
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