BSONObj KeyV1::toBson(BufBuilder &bb) const {
verify( _keyData != 0 );
if( !isCompactFormat() )
return bson();
BSONObjBuilder b(bb);
const unsigned char *p = _keyData;
while( 1 ) {
unsigned bits = *p++;
switch( bits & cFULLTYPEMASK ) {
case cminkey: b.appendMinKey(""); break;
case cnull: b.appendNull(""); break;
case cfalse: b.appendBool("", false); break;
case ctrue: b.appendBool("", true); break;
case cmaxkey:
b.appendMaxKey("");
break;
case cstring:
{
unsigned sz = *p++;
// we build the element ourself as we have to null terminate it
BufBuilder &bb = b.bb();
bb.appendNum((char) String);
bb.appendUChar(0); // fieldname ""
bb.appendNum(sz+1);
bb.appendBuf(p, sz);
bb.appendUChar(0); // null char at end of string
p += sz;
break;
}
case coid:
b.appendOID("", (OID *) p);
p += sizeof(OID);
break;
case cbindata:
{
int len = binDataCodeToLength(*p);
int subtype = (*p) & BinDataTypeMask;
if( subtype & 0x8 ) {
subtype = (subtype & 0x7) | 0x80;
}
b.appendBinData("", len, (BinDataType) subtype, ++p);
p += len;
break;
}
case cdate:
b.appendDate("", (Date_t&) *p);
p += 8;
break;
case cdouble:
b.append("", (double&) *p);
p += sizeof(double);
break;
case cint:
b.append("", static_cast< int >((reinterpret_cast< const PackedDouble& >(*p)).d));
p += sizeof(double);
break;
case clong:
b.append("", static_cast< long long>((reinterpret_cast< const PackedDouble& >(*p)).d));
p += sizeof(double);
break;
case cint64:
b.append("", *reinterpret_cast<const long long *>(p));
p += sizeof(long long);
break;
default:
verify(false);
}
if( (bits & cHASMORE) == 0 )
break;
}
return b.done();
}
