UBool
CollationKey::operator==(const CollationKey& source) const
{
return getLength() == source.getLength() &&
(this == &source ||
uprv_memcmp(getBytes(), source.getBytes(), getLength()) == 0);
}
CollationKey::CollationKey(const CollationKey& other)
: UObject(other), fFlagAndLength(other.getLength()),
fHashCode(other.fHashCode)
{
if (other.isBogus())
{
setToBogus();
return;
}
int32_t length = fFlagAndLength;
if (length > getCapacity() && reallocate(length, 0) == NULL) {
setToBogus();
return;
}
if (length > 0) {
uprv_memcpy(getBytes(), other.getBytes(), length);
}
}
// Bitwise comparison for the collation keys.
UCollationResult
CollationKey::compareTo(const CollationKey& target, UErrorCode &status) const
{
if(U_SUCCESS(status)) {
const uint8_t *src = getBytes();
const uint8_t *tgt = target.getBytes();
// are we comparing the same string
if (src == tgt)
return UCOL_EQUAL;
UCollationResult result;
// are we comparing different lengths?
int32_t minLength = getLength();
int32_t targetLength = target.getLength();
if (minLength < targetLength) {
result = UCOL_LESS;
} else if (minLength == targetLength) {
result = UCOL_EQUAL;
} else {
minLength = targetLength;
result = UCOL_GREATER;
}
if (minLength > 0) {
int diff = uprv_memcmp(src, tgt, minLength);
if (diff > 0) {
return UCOL_GREATER;
}
else
if (diff < 0) {
return UCOL_LESS;
}
}
return result;
} else {
return UCOL_EQUAL;
}
}
