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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/FloatingPoint.h"
#include "mozilla/intl/Collator.h"
#include "mozilla/intl/LocaleService.h"
#include "txXPathResultComparator.h"
#include "txExpr.h"
#include "nsComponentManagerUtils.h"
#include "txCore.h"
using namespace mozilla;
using Collator = mozilla::intl::Collator;
#define kAscending (1 << 0)
#define kUpperFirst (1 << 1)
txResultStringComparator::txResultStringComparator(bool aAscending,
bool aUpperFirst,
const nsString& aLanguage) {
mSorting = 0;
if (aAscending) mSorting |= kAscending;
if (aUpperFirst) mSorting |= kUpperFirst;
nsresult rv = init(aLanguage);
if (NS_FAILED(rv)) NS_ERROR("Failed to initialize txResultStringComparator");
}
nsresult txResultStringComparator::init(const nsString& aLanguage) {
auto result =
aLanguage.IsEmpty()
? mozilla::intl::LocaleService::TryCreateComponent<Collator>()
: mozilla::intl::LocaleService::TryCreateComponentWithLocale<
Collator>(NS_ConvertUTF16toUTF8(aLanguage).get());
NS_ENSURE_TRUE(result.isOk(), NS_ERROR_FAILURE);
auto collator = result.unwrap();
// Sort in a case-insensitive way, where "base" letters are considered
// equal, e.g: a = á, a = A, a ≠ b.
Collator::Options options{};
options.sensitivity = Collator::Sensitivity::Base;
auto optResult = collator->SetOptions(options);
NS_ENSURE_TRUE(optResult.isOk(), NS_ERROR_FAILURE);
mCollator = UniquePtr<const Collator>(collator.release());
return NS_OK;
}
nsresult txResultStringComparator::createSortableValue(Expr* aExpr,
txIEvalContext* aContext,
txObject*& aResult) {
UniquePtr<StringValue> val(new StringValue);
if (!mCollator) {
return NS_ERROR_FAILURE;
}
val->mCaseKeyString = MakeUnique<nsString>();
nsString& nsCaseKey = *val->mCaseKeyString;
nsresult rv = aExpr->evaluateToString(aContext, nsCaseKey);
NS_ENSURE_SUCCESS(rv, rv);
if (nsCaseKey.IsEmpty()) {
aResult = val.release();
return NS_OK;
}
auto result = mCollator->GetSortKey(nsCaseKey, val->mKey);
NS_ENSURE_TRUE(result.isOk(), NS_ERROR_FAILURE);
aResult = val.release();
return NS_OK;
}
int txResultStringComparator::compareValues(txObject* aVal1, txObject* aVal2) {
StringValue* strval1 = (StringValue*)aVal1;
StringValue* strval2 = (StringValue*)aVal2;
if (!mCollator) {
return -1;
}
if (strval1->mKey.Length() == 0) {
if (strval2->mKey.Length() == 0) {
return 0;
}
return ((mSorting & kAscending) ? -1 : 1);
}
if (strval2->mKey.Length() == 0) {
return ((mSorting & kAscending) ? 1 : -1);
}
nsresult rv;
int32_t result = mCollator->CompareSortKeys(strval1->mKey, strval2->mKey);
if (result != 0) {
return ((mSorting & kAscending) ? 1 : -1) * result;
}
if (strval1->mCaseKeyString && strval1->mKey.Length() != 0) {
rv = strval1->initCaseKey(*mCollator);
if (NS_FAILED(rv)) {
// XXX ErrorReport
return -1;
}
}
if (strval2->mCaseKeyString && strval2->mKey.Length() != 0) {
rv = strval2->initCaseKey(*mCollator);
if (NS_FAILED(rv)) {
// XXX ErrorReport
return -1;
}
}
result = mCollator->CompareSortKeys(strval1->mCaseKey, strval2->mCaseKey);
return ((mSorting & kAscending) ? 1 : -1) *
((mSorting & kUpperFirst) ? -1 : 1) * result;
}
txResultStringComparator::StringValue::StringValue() = default;
txResultStringComparator::StringValue::~StringValue() = default;
nsresult txResultStringComparator::StringValue::initCaseKey(
const mozilla::intl::Collator& aCollator) {
auto result = aCollator.GetSortKey(*mCaseKeyString, mCaseKey);
if (result.isErr()) {
mCaseKey.SetLength(0);
return NS_ERROR_FAILURE;
}
mCaseKeyString = nullptr;
return NS_OK;
}
txResultNumberComparator::txResultNumberComparator(bool aAscending) {
mAscending = aAscending ? 1 : -1;
}
nsresult txResultNumberComparator::createSortableValue(Expr* aExpr,
txIEvalContext* aContext,
txObject*& aResult) {
UniquePtr<NumberValue> numval(new NumberValue);
RefPtr<txAExprResult> exprRes;
nsresult rv = aExpr->evaluate(aContext, getter_AddRefs(exprRes));
NS_ENSURE_SUCCESS(rv, rv);
numval->mVal = exprRes->numberValue();
aResult = numval.release();
return NS_OK;
}
int txResultNumberComparator::compareValues(txObject* aVal1, txObject* aVal2) {
double dval1 = ((NumberValue*)aVal1)->mVal;
double dval2 = ((NumberValue*)aVal2)->mVal;
if (std::isnan(dval1)) return std::isnan(dval2) ? 0 : -mAscending;
if (std::isnan(dval2)) return mAscending;
if (dval1 == dval2) return 0;
return (dval1 < dval2) ? -mAscending : mAscending;
}
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