115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qglobal.h"
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#include "qlibrary.h"
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#include "qdebug.h"
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#include "qlocale_p.h"
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#include "qmutex.h"
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#include "unicode/uloc.h"
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#include "unicode/ustring.h"
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QT_BEGIN_NAMESPACE
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typedef int32_t (*Ptr_u_strToCase)(UChar *dest, int32_t destCapacity, const UChar *src, int32_t srcLength, const char *locale, UErrorCode *pErrorCode);
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// caseFunc can either be u_strToUpper or u_strToLower
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static bool qt_u_strToCase(const QString &str, QString *out, const char *localeID, Ptr_u_strToCase caseFunc)
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{
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Q_ASSERT(out);
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int32_t size = str.size();
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size += size >> 2; // add 25% for possible expansions
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QString result(size, Qt::Uninitialized);
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UErrorCode status = U_ZERO_ERROR;
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size = caseFunc(reinterpret_cast<UChar *>(result.data()), result.size(),
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reinterpret_cast<const UChar *>(str.constData()), str.size(),
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localeID, &status);
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if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR)
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return false;
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if (size < result.size()) {
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result.resize(size);
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} else if (size > result.size()) {
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// the resulting string is larger than our source string
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result.resize(size);
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status = U_ZERO_ERROR;
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size = caseFunc(reinterpret_cast<UChar *>(result.data()), result.size(),
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reinterpret_cast<const UChar *>(str.constData()), str.size(),
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localeID, &status);
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if (U_FAILURE(status))
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return false;
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// if the sizes don't match now, we give up.
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if (size != result.size())
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return false;
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}
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*out = result;
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return true;
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}
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QString QIcu::toUpper(const QByteArray &localeID, const QString &str, bool *ok)
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{
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QString out;
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bool err = qt_u_strToCase(str, &out, localeID, u_strToUpper);
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if (ok)
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*ok = err;
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return out;
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}
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QString QIcu::toLower(const QByteArray &localeID, const QString &str, bool *ok)
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{
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QString out;
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bool err = qt_u_strToCase(str, &out, localeID, u_strToLower);
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if (ok)
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*ok = err;
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return out;
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}
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QT_END_NAMESPACE
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