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| |
| #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 |