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++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ // Qt-Security score:critical reason:data-parser
++
++ #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 <private/qglobal_p.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