/*
* The collator returned by this function is owned by the callee and must be
* closed when this method returns with a U_SUCCESS UErrorCode.
*
* On error, the return value is undefined.
*/
UCollator* CloneCollatorWithOptions(const UCollator* pCollator, int32_t options, UErrorCode* pErr)
{
UColAttributeValue strength = ucol_getStrength(pCollator);
bool isIgnoreCase = (options & CompareOptionsIgnoreCase) == CompareOptionsIgnoreCase;
bool isIgnoreNonSpace = (options & CompareOptionsIgnoreNonSpace) == CompareOptionsIgnoreNonSpace;
bool isIgnoreSymbols = (options & CompareOptionsIgnoreSymbols) == CompareOptionsIgnoreSymbols;
if (isIgnoreCase)
{
strength = UCOL_SECONDARY;
}
if (isIgnoreNonSpace)
{
strength = UCOL_PRIMARY;
}
UCollator* pClonedCollator;
std::vector<UChar> customRules = GetCustomRules(options, strength, isIgnoreSymbols);
if (customRules.empty())
{
pClonedCollator = ucol_safeClone(pCollator, nullptr, nullptr, pErr);
}
else
{
int32_t customRuleLength = customRules.size();
int32_t localeRulesLength;
const UChar* localeRules = ucol_getRules(pCollator, &localeRulesLength);
std::vector<UChar> completeRules(localeRulesLength + customRuleLength + 1, '\0');
for (int i = 0; i < localeRulesLength; i++)
{
completeRules[i] = localeRules[i];
}
for (int i = 0; i < customRuleLength; i++)
{
completeRules[localeRulesLength + i] = customRules[i];
}
pClonedCollator = ucol_openRules(completeRules.data(), completeRules.size(), UCOL_DEFAULT, strength, NULL, pErr);
}
if (isIgnoreSymbols)
{
ucol_setAttribute(pClonedCollator, UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED, pErr);
}
ucol_setAttribute(pClonedCollator, UCOL_STRENGTH, strength, pErr);
// casing differs at the tertiary level.
// if strength is less than tertiary, but we are not ignoring case, then we need to flip CASE_LEVEL On
if (strength < UCOL_TERTIARY && !isIgnoreCase)
{
ucol_setAttribute(pClonedCollator, UCOL_CASE_LEVEL, UCOL_ON, pErr);
}
return pClonedCollator;
}
/*
* The collator returned by this function is owned by the callee and must be
* closed when this method returns with a U_SUCCESS UErrorCode.
*
* On error, the return value is undefined.
*/
UCollator* CloneCollatorWithOptions(const UCollator* pCollator, int32_t options, UErrorCode* pErr)
{
UColAttributeValue strength = ucol_getStrength(pCollator);
bool isIgnoreCase = (options & CompareOptionsIgnoreCase) == CompareOptionsIgnoreCase;
bool isIgnoreNonSpace = (options & CompareOptionsIgnoreNonSpace) == CompareOptionsIgnoreNonSpace;
bool isIgnoreSymbols = (options & CompareOptionsIgnoreSymbols) == CompareOptionsIgnoreSymbols;
if (isIgnoreCase)
{
strength = UCOL_SECONDARY;
}
if (isIgnoreNonSpace)
{
strength = UCOL_PRIMARY;
}
UCollator* pClonedCollator;
std::vector<UChar> customRules = GetCustomRules(options, strength, isIgnoreSymbols);
if (customRules.empty())
{
pClonedCollator = ucol_safeClone(pCollator, nullptr, nullptr, pErr);
}
else
{
int32_t customRuleLength = customRules.size();
int32_t localeRulesLength;
const UChar* localeRules = ucol_getRules(pCollator, &localeRulesLength);
std::vector<UChar> completeRules(localeRulesLength + customRuleLength + 1, '\0');
for (int i = 0; i < localeRulesLength; i++)
{
completeRules[i] = localeRules[i];
}
for (int i = 0; i < customRuleLength; i++)
{
completeRules[localeRulesLength + i] = customRules[i];
}
pClonedCollator = ucol_openRules(completeRules.data(), completeRules.size(), UCOL_DEFAULT, strength, NULL, pErr);
}
if (isIgnoreSymbols)
{
ucol_setAttribute(pClonedCollator, UCOL_ALTERNATE_HANDLING, UCOL_SHIFTED, pErr);
// by default, ICU alternate shifted handling only ignores punctuation, but
// IgnoreSymbols needs symbols and currency as well, so change the "variable top"
// to include all symbols and currency
#if HAVE_SET_MAX_VARIABLE
ucol_setMaxVariable(pClonedCollator, UCOL_REORDER_CODE_CURRENCY, pErr);
#else
// 0xfdfc is the last currency character before the first digit character
// in http://source.icu-project.org/repos/icu/icu/tags/release-52-1/source/data/unidata/FractionalUCA.txt
const UChar ignoreSymbolsVariableTop[] = { 0xfdfc };
ucol_setVariableTop(pClonedCollator, ignoreSymbolsVariableTop, 1, pErr);
#endif
}
ucol_setAttribute(pClonedCollator, UCOL_STRENGTH, strength, pErr);
// casing differs at the tertiary level.
// if strength is less than tertiary, but we are not ignoring case, then we need to flip CASE_LEVEL On
if (strength < UCOL_TERTIARY && !isIgnoreCase)
{
ucol_setAttribute(pClonedCollator, UCOL_CASE_LEVEL, UCOL_ON, pErr);
}
return pClonedCollator;
}