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/* ---------------------------------------------------------------------------
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;
}
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