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// Copyright (C) 2020 Aleix Pol Gonzalez <aleixpol@kde.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qcollator_p.h"
#include "qlocale_p.h"
#include "qstringlist.h"
#include "qstring.h"
#include <QDebug>
#include <qt_windows.h>
#include <qsysinfo.h>
QT_BEGIN_NAMESPACE
//NOTE: SORT_DIGITSASNUMBERS is available since win7
#ifndef SORT_DIGITSASNUMBERS
#define SORT_DIGITSASNUMBERS 8
#endif
// implemented in qlocale_win.cpp
extern LCID qt_inIsoNametoLCID(const char *name);
void QCollatorPrivate::init()
{
collator = 0;
if (isC())
return;
localeID = qt_inIsoNametoLCID(QLocalePrivate::get(locale)->bcp47Name().constData());
if (caseSensitivity == Qt::CaseInsensitive)
collator |= NORM_IGNORECASE;
// WINE does not support SORT_DIGITSASNUMBERS :-(
// (and its std::sort() crashes on bad comparisons, QTBUG-74209)
if (numericMode)
collator |= SORT_DIGITSASNUMBERS;
if (ignorePunctuation)
collator |= NORM_IGNORESYMBOLS;
dirty = false;
}
void QCollatorPrivate::cleanup()
{
}
int QCollator::compare(QStringView s1, QStringView s2) const
{
if (!s1.size())
return s2.size() ? -1 : 0;
if (!s2.size())
return +1;
if (d->isC())
return s1.compare(s2, d->caseSensitivity);
if (d->dirty)
d->init();
//* from Windows documentation *
// Returns one of the following values if successful. To maintain the C
// runtime convention of comparing strings, the value 2 can be subtracted
// from a nonzero return value. Then, the meaning of <0, ==0, and >0 is
// consistent with the C runtime.
// [...] The function returns 0 if it does not succeed.
// https://docs.microsoft.com/en-us/windows/desktop/api/stringapiset/nf-stringapiset-comparestringex#return-value
const int ret = CompareString(d->localeID, d->collator,
reinterpret_cast<const wchar_t *>(s1.data()), s1.size(),
reinterpret_cast<const wchar_t *>(s2.data()), s2.size());
if (Q_LIKELY(ret))
return ret - 2;
switch (DWORD error = GetLastError()) {
case ERROR_INVALID_FLAGS:
qWarning("Unsupported flags (%d) used in QCollator", int(d->collator));
break;
case ERROR_INVALID_PARAMETER:
qWarning("Invalid parameter for QCollator::compare()");
break;
default:
qWarning("Failed (%ld) comparison in QCollator::compare()", long(error));
break;
}
// We have no idea what to return, so pretend we think they're equal.
// At least that way we'll be consistent if we get the same values swapped ...
return 0;
}
QCollatorSortKey QCollator::sortKey(const QString &string) const
{
if (d->dirty)
d->init();
if (d->isC())
return QCollatorSortKey(new QCollatorSortKeyPrivate(string));
int size = LCMapStringW(d->localeID, LCMAP_SORTKEY | d->collator,
reinterpret_cast<const wchar_t*>(string.constData()), string.size(),
0, 0);
QString ret(size, Qt::Uninitialized);
int finalSize = LCMapStringW(d->localeID, LCMAP_SORTKEY | d->collator,
reinterpret_cast<const wchar_t*>(string.constData()), string.size(),
reinterpret_cast<wchar_t*>(ret.data()), ret.size());
if (finalSize == 0) {
qWarning()
<< "there were problems when generating the ::sortKey by LCMapStringW with error:"
<< GetLastError();
}
return QCollatorSortKey(new QCollatorSortKeyPrivate(std::move(ret)));
}
int QCollatorSortKey::compare(const QCollatorSortKey &otherKey) const
{
return d->m_key.compare(otherKey.d->m_key);
}
QT_END_NAMESPACE
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