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Diffstat (limited to 'src/corelib/text/qdoublescanprint_p.h')
-rw-r--r-- | src/corelib/text/qdoublescanprint_p.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/corelib/text/qdoublescanprint_p.h b/src/corelib/text/qdoublescanprint_p.h new file mode 100644 index 0000000000..3865c69a99 --- /dev/null +++ b/src/corelib/text/qdoublescanprint_p.h @@ -0,0 +1,156 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QDOUBLESCANPRINT_P_H +#define QDOUBLESCANPRINT_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of internal files. This header file may change from version to version +// without notice, or even be removed. +// +// We mean it. +// + +#include <qglobal.h> + +#if defined(Q_CC_MSVC) && (defined(QT_BOOTSTRAPPED) || defined(QT_NO_DOUBLECONVERSION)) +# include <stdio.h> +# include <locale.h> + +QT_BEGIN_NAMESPACE + +// We can always use _sscanf_l and _snprintf_l on MSVC as those were introduced in 2005. + +// MSVC doesn't document what it will do with a NULL locale passed to _sscanf_l or _snprintf_l. +// The documentation for _create_locale() does not formally document "C" to be valid, but an example +// code snippet in the same documentation shows it. + +struct QCLocaleT { + QCLocaleT() : locale(_create_locale(LC_ALL, "C")) + { + } + + ~QCLocaleT() + { + _free_locale(locale); + } + + const _locale_t locale; +}; + +# define QT_CLOCALE_HOLDER Q_GLOBAL_STATIC(QCLocaleT, cLocaleT) +# define QT_CLOCALE cLocaleT()->locale + +inline int qDoubleSscanf(const char *buf, _locale_t locale, const char *format, double *d, + int *processed) +{ + return _sscanf_l(buf, format, locale, d, processed); +} + +inline int qDoubleSnprintf(char *buf, size_t buflen, _locale_t locale, const char *format, double d) +{ + return _snprintf_l(buf, buflen, format, locale, d); +} + +QT_END_NAMESPACE + +#elif defined(QT_BOOTSTRAPPED) +# include <stdio.h> + +QT_BEGIN_NAMESPACE + +// When bootstrapping we don't have libdouble-conversion available, yet. We can also not use locale +// aware snprintf and sscanf variants in the general case because those are only available on select +// platforms. We can use the regular snprintf and sscanf because we don't do setlocale(3) when +// bootstrapping and the locale is always "C" then. + +# define QT_CLOCALE_HOLDER +# define QT_CLOCALE 0 + +inline int qDoubleSscanf(const char *buf, int, const char *format, double *d, int *processed) +{ + return sscanf(buf, format, d, processed); +} +inline int qDoubleSnprintf(char *buf, size_t buflen, int, const char *format, double d) +{ + return snprintf(buf, buflen, format, d); +} + +QT_END_NAMESPACE + +#else // !QT_BOOTSTRAPPED && (!Q_CC_MSVC || !QT_NO_DOUBLECONVERSION) +# ifdef QT_NO_DOUBLECONVERSION +# include <stdio.h> +# include <xlocale.h> + +QT_BEGIN_NAMESPACE + +// OS X and FreeBSD both treat NULL as the "C" locale for snprintf_l and sscanf_l. +// When other implementations with different behavior show up, we'll have to do newlocale(3) and +// freelocale(3) here. The arguments to those will depend on what the other implementations will +// offer. OS X and FreeBSD again interpret a locale name of NULL as "C", but "C" itself is not +// documented as valid locale name. Mind that the names of the LC_* constants differ between e.g. +// BSD variants and linux. + +# define QT_CLOCALE_HOLDER +# define QT_CLOCALE NULL + +inline int qDoubleSscanf(const char *buf, locale_t locale, const char *format, double *d, + int *processed) +{ + return sscanf_l(buf, locale, format, d, processed); +} +inline int qDoubleSnprintf(char *buf, size_t buflen, locale_t locale, const char *format, double d) +{ + return snprintf_l(buf, buflen, locale, format, d); +} + +QT_END_NAMESPACE + +# else // !QT_NO_DOUBLECONVERSION +# include <double-conversion/double-conversion.h> +# define QT_CLOCALE_HOLDER +# endif // QT_NO_DOUBLECONVERSION +#endif // QT_BOOTSTRAPPED + +#endif // QDOUBLESCANPRINT_P_H |