From 38be0d13830efd2d98281c645c3a60afe05ffece Mon Sep 17 00:00:00 2001 From: Qt by Nokia Date: Wed, 27 Apr 2011 12:05:43 +0200 Subject: Initial import from the monolithic Qt. This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12 --- src/corelib/tools/qlocale_icu.cpp | 224 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 224 insertions(+) create mode 100644 src/corelib/tools/qlocale_icu.cpp (limited to 'src/corelib/tools/qlocale_icu.cpp') diff --git a/src/corelib/tools/qlocale_icu.cpp b/src/corelib/tools/qlocale_icu.cpp new file mode 100644 index 0000000000..0e283dd0bb --- /dev/null +++ b/src/corelib/tools/qlocale_icu.cpp @@ -0,0 +1,224 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qglobal.h" +#include "qlibrary.h" +#include "qdebug.h" + +#include "unicode/uversion.h" +#include "unicode/ucol.h" + +QT_BEGIN_NAMESPACE + +typedef UCollator *(*Ptr_ucol_open)(const char *loc, UErrorCode *status); +typedef void (*Ptr_ucol_close)(UCollator *coll); +typedef UCollationResult (*Ptr_ucol_strcoll)(const UCollator *coll, const UChar *source, int32_t sourceLength, const UChar *target, int32_t targetLength); +typedef int32_t (*Ptr_u_strToCase)(UChar *dest, int32_t destCapacity, const UChar *src, int32_t srcLength, const char *locale, UErrorCode *pErrorCode); + +static Ptr_ucol_open ptr_ucol_open = 0; +static Ptr_ucol_strcoll ptr_ucol_strcoll = 0; +static Ptr_ucol_close ptr_ucol_close = 0; +static Ptr_u_strToCase ptr_u_strToUpper = 0; +static Ptr_u_strToCase ptr_u_strToLower = 0; + +enum LibLoadStatus +{ + ErrorLoading = -1, + NotLoaded = 0, + Loaded = 1 +}; + +static LibLoadStatus status = NotLoaded; + +static UCollator *icuCollator = 0; + +#define STRINGIFY2(x) #x +#define STRINGIFY(x) STRINGIFY2(x) + +bool qt_initIcu(const QString &localeString) +{ + if (status == ErrorLoading) + return false; + + if (status == NotLoaded) { + + // resolve libicui18n + QLibrary lib(QLatin1String("icui18n"), QLatin1String(U_ICU_VERSION_SHORT)); + if (!lib.load()) { + qWarning() << "Unable to load library icui18n" << lib.errorString(); + status = ErrorLoading; + return false; + } + + ptr_ucol_open = (Ptr_ucol_open)lib.resolve("ucol_open"); + ptr_ucol_close = (Ptr_ucol_close)lib.resolve("ucol_close"); + ptr_ucol_strcoll = (Ptr_ucol_strcoll)lib.resolve("ucol_strcoll"); + + if (!ptr_ucol_open || !ptr_ucol_close || !ptr_ucol_strcoll) { + // try again with decorated symbol names + ptr_ucol_open = (Ptr_ucol_open)lib.resolve("ucol_open" STRINGIFY(U_ICU_VERSION_SUFFIX)); + ptr_ucol_close = (Ptr_ucol_close)lib.resolve("ucol_close" STRINGIFY(U_ICU_VERSION_SUFFIX)); + ptr_ucol_strcoll = (Ptr_ucol_strcoll)lib.resolve("ucol_strcoll" STRINGIFY(U_ICU_VERSION_SUFFIX)); + } + + if (!ptr_ucol_open || !ptr_ucol_close || !ptr_ucol_strcoll) { + ptr_ucol_open = 0; + ptr_ucol_close = 0; + ptr_ucol_strcoll = 0; + + qWarning("Unable to find symbols in icui18n"); + status = ErrorLoading; + return false; + } + + // resolve libicuuc + QLibrary ucLib(QLatin1String("icuuc"), QLatin1String(U_ICU_VERSION_SHORT)); + if (!ucLib.load()) { + qWarning() << "Unable to load library icuuc" << ucLib.errorString(); + status = ErrorLoading; + return false; + } + + ptr_u_strToUpper = (Ptr_u_strToCase)ucLib.resolve("u_strToUpper"); + ptr_u_strToLower = (Ptr_u_strToCase)ucLib.resolve("u_strToLower"); + + if (!ptr_u_strToUpper || !ptr_u_strToLower) { + ptr_u_strToUpper = (Ptr_u_strToCase)ucLib.resolve("u_strToUpper" STRINGIFY(U_ICU_VERSION_SUFFIX)); + ptr_u_strToLower = (Ptr_u_strToCase)ucLib.resolve("u_strToLower" STRINGIFY(U_ICU_VERSION_SUFFIX)); + } + + if (!ptr_u_strToUpper || !ptr_u_strToLower) { + ptr_u_strToUpper = 0; + ptr_u_strToLower = 0; + + qWarning("Unable to find symbols in icuuc"); + status = ErrorLoading; + return false; + } + + // success :) + status = Loaded; + } + + if (icuCollator) { + ptr_ucol_close(icuCollator); + icuCollator = 0; + } + + UErrorCode icuStatus = U_ZERO_ERROR; + icuCollator = ptr_ucol_open(localeString.toLatin1().constData(), &icuStatus); + + if (!icuCollator) { + qWarning("Unable to open locale %s in ICU, error code %d", qPrintable(localeString), icuStatus); + return false; + } + + return true; +} + +bool qt_ucol_strcoll(const QChar *source, int sourceLength, const QChar *target, int targetLength, int *result) +{ + Q_ASSERT(result); + Q_ASSERT(source); + Q_ASSERT(target); + + if (!icuCollator) + return false; + + *result = ptr_ucol_strcoll(icuCollator, reinterpret_cast(source), int32_t(sourceLength), + reinterpret_cast(target), int32_t(targetLength)); + + return true; +} + +// caseFunc can either be u_strToUpper or u_strToLower +static bool qt_u_strToCase(const QString &str, QString *out, const QLocale &locale, Ptr_u_strToCase caseFunc) +{ + Q_ASSERT(out); + + if (!icuCollator) + return false; + + QString result(str.size(), Qt::Uninitialized); + + UErrorCode status = U_ZERO_ERROR; + + int32_t size = caseFunc(reinterpret_cast(result.data()), result.size(), + reinterpret_cast(str.constData()), str.size(), + locale.bcp47Name().toLatin1().constData(), &status); + + if (U_FAILURE(status)) + 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(result.data()), result.size(), + reinterpret_cast(str.constData()), str.size(), + locale.bcp47Name().toLatin1().constData(), &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; +} + +bool qt_u_strToUpper(const QString &str, QString *out, const QLocale &locale) +{ + return qt_u_strToCase(str, out, locale, ptr_u_strToUpper); +} + +bool qt_u_strToLower(const QString &str, QString *out, const QLocale &locale) +{ + return qt_u_strToCase(str, out, locale, ptr_u_strToLower); +} + +QT_END_NAMESPACE -- cgit v1.2.3