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Diffstat (limited to 'src/corelib/text/qlocale_icu.cpp')
-rw-r--r-- | src/corelib/text/qlocale_icu.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/corelib/text/qlocale_icu.cpp b/src/corelib/text/qlocale_icu.cpp new file mode 100644 index 0000000000..afe0aae583 --- /dev/null +++ b/src/corelib/text/qlocale_icu.cpp @@ -0,0 +1,111 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qglobal.h" +#include "qdebug.h" +#include "qlocale_p.h" +#include "qmutex.h" + +#include "unicode/uloc.h" +#include "unicode/ustring.h" + +QT_BEGIN_NAMESPACE + +typedef int32_t (*Ptr_u_strToCase)(UChar *dest, int32_t destCapacity, const UChar *src, int32_t srcLength, const char *locale, UErrorCode *pErrorCode); + +// caseFunc can either be u_strToUpper or u_strToLower +static bool qt_u_strToCase(const QString &str, QString *out, const char *localeID, Ptr_u_strToCase caseFunc) +{ + Q_ASSERT(out); + + int32_t size = str.size(); + size += size >> 2; // add 25% for possible expansions + QString result(size, Qt::Uninitialized); + + UErrorCode status = U_ZERO_ERROR; + + size = caseFunc(reinterpret_cast<UChar *>(result.data()), result.size(), + reinterpret_cast<const UChar *>(str.constData()), str.size(), + localeID, &status); + + if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR) + return false; + + if (size < result.size()) { + result.resize(size); + } else if (size > result.size()) { + // the resulting string is larger than our source string + result.resize(size); + + status = U_ZERO_ERROR; + size = caseFunc(reinterpret_cast<UChar *>(result.data()), result.size(), + reinterpret_cast<const UChar *>(str.constData()), str.size(), + localeID, &status); + + if (U_FAILURE(status)) + return false; + + // if the sizes don't match now, we give up. + if (size != result.size()) + return false; + } + + *out = result; + return true; +} + +QString QIcu::toUpper(const QByteArray &localeID, const QString &str, bool *ok) +{ + QString out; + bool err = qt_u_strToCase(str, &out, localeID, u_strToUpper); + if (ok) + *ok = err; + return out; +} + +QString QIcu::toLower(const QByteArray &localeID, const QString &str, bool *ok) +{ + QString out; + bool err = qt_u_strToCase(str, &out, localeID, u_strToLower); + if (ok) + *ok = err; + return out; +} + +QT_END_NAMESPACE |