101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
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/*
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* Wrappers for printf like functions.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 2007 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __WS_PRINTF_H__
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#define __WS_PRINTF_H__
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/*
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* GLib's string utility routines are slow on windows, likely due to calling
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* g_printf_string_upper_bound. Using ws_snprintf and ws_vsnprintf in hot
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* code paths can speed up program execution. Otherwise you're probably safe
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* sticking with g_snprintf and g_vsnprintf.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#ifdef _WIN32
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#include <strsafe.h>
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#if _MSC_VER < 1900
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#include <stdarg.h>
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/*
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* vsnprintf_s's return value isn't compatible with C99 vsnprintf. We don't
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* return anything in order to avoid confusion.
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*/
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static __inline void
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ws_vsnprintf(char *buffer, size_t size_of_buffer, const char *format, va_list argptr) {
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/* We could alternatively use StringCchVPrintfA */
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vsnprintf_s(buffer, size_of_buffer, _TRUNCATE, format, argptr);
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}
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#else /* _MSC_VER uses UCRT */
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/* The UCRT versions of snprintf and vsnprintf conform to C99 */
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static __inline void
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ws_vsnprintf(char *buffer, size_t size_of_buffer, const char *format, va_list argptr)
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{
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vsnprintf(buffer, size_of_buffer, format, argptr);
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}
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#endif /* _MSC_VER */
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#else /* _WIN32 */
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#include <glib.h>
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/*
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* Use g_vsnprintf. On Linux and macOS these should be a thin wrapper around
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* vsprintf.
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*/
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static inline void
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ws_vsnprintf(char *buffer, size_t size_of_buffer, const char *format, va_list argptr)
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{
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g_vsnprintf(buffer, (gulong) size_of_buffer, format, argptr);
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}
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#endif /* _WIN32 */
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#ifdef _WIN32
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static __inline void
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#else
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static inline void
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#endif
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ws_snprintf(char *buffer, size_t size_of_buffer, const char * format, ...) {
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va_list argptr;
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va_start(argptr, format);
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ws_vsnprintf(buffer, size_of_buffer, format, argptr);
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va_end(argptr);
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}
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __WS_PRINTF_H__ */
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