126 lines
3.0 KiB
C++
126 lines
3.0 KiB
C++
/* ---------------------------------------------------------------------------
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Nullsoft Database Engine
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--------------------
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codename: Near Death Experience
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--------------------------------------------------------------------------- */
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/* ---------------------------------------------------------------------------
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Int128Field Class
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Field data layout:
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[16 bytes] value
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--------------------------------------------------------------------------- */
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#include "nde.h"
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#include "Int128Field.h"
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#include <time.h>
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//---------------------------------------------------------------------------
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Int128Field::Int128Field(void *data)
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{
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InitField();
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Type = FIELD_INT128;
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memcpy(Value, data, 16);
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}
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//---------------------------------------------------------------------------
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void Int128Field::InitField(void)
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{
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Type = FIELD_INT128;
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memset(Value, 0, 16);
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}
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//---------------------------------------------------------------------------
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Int128Field::Int128Field()
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{
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InitField();
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}
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//---------------------------------------------------------------------------
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Int128Field::~Int128Field()
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{
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}
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//---------------------------------------------------------------------------
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void Int128Field::ReadTypedData(const uint8_t *data, size_t len)
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{
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if (len < 16) return;
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memcpy(Value, data, 16);
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}
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//---------------------------------------------------------------------------
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void Int128Field::WriteTypedData(uint8_t *data, size_t len)
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{
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if (len < 16) return;
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memcpy(data, Value, 16);
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}
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//---------------------------------------------------------------------------
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void *Int128Field::GetValue(void)
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{
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return Value;
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}
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//---------------------------------------------------------------------------
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void Int128Field::SetValue(const void *Val)
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{
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memcpy(Value, Val, 16);
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}
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//---------------------------------------------------------------------------
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size_t Int128Field::GetDataSize(void)
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{
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return 16;
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}
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//---------------------------------------------------------------------------
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int Int128Field::Compare(Field *Entry)
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{
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if (!Entry) return -1;
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return memcmp(Value, ((Int128Field*)Entry)->GetValue(), 16);
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}
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static char zerobuf[16]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
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//---------------------------------------------------------------------------
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bool Int128Field::ApplyFilter(Field *Data, int op)
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{
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void *p = ((Int128Field *)Data)->GetValue();
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void *d = Value;
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if (!p)
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p = zerobuf;
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if (!d)
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d = zerobuf;
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bool r;
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switch (op)
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{
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case FILTER_EQUALS:
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r = !memcmp(d, p, 16);
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break;
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case FILTER_CONTAINS:
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r = !memcmp(d, p, 16);
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break;
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case FILTER_ABOVE:
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r = (memcmp(d, p, 16) > 0);
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break;
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case FILTER_BELOW:
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r = (memcmp(d, p, 16) < 0);
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break;
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case FILTER_BELOWOREQUAL:
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r = (memcmp(d, p, 16) <= 0);
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break;
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case FILTER_ABOVEOREQUAL:
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r = (memcmp(d, p, 16) >= 0);
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break;
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case FILTER_ISEMPTY:
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r = !d || (!memcmp(d, zerobuf, 16));
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break;
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case FILTER_ISNOTEMPTY:
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r = d && (memcmp(d, zerobuf, 16));
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break;
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default:
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r = true;
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break;
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}
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return r;
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} |