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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _CSF_COMMON_E58E5677_950A_424c_B6C2_CA180092E6A2_H
#define _CSF_COMMON_E58E5677_950A_424c_B6C2_CA180092E6A2_H
/*
This header file defines:
csf_countof
csf_sprintf
csf_vsprintf
*/
/*
General security tip: Ensure that "format" is never a user-defined string.
Format should ALWAYS be something that's built into your code, not user
supplied. For example: never write:
csf_sprintf(buffer, csf_countof(buffer), pUserSuppliedString);
Instead write:
csf_sprintf(buffer, csf_countof(buffer), "%s", pUserSuppliedString);
*/
#ifdef WIN32
# if !defined(_countof)
# if !defined(__cplusplus)
# define _countof(_Array) (sizeof(_Array) / sizeof(_Array[0]))
# else
extern "C++" {
template <typename _CountofType, size_t _SizeOfArray>
char (*_csf_countof_helper(_CountofType (&_Array)[_SizeOfArray]))[_SizeOfArray];
# define _countof(_Array) sizeof(*_csf_countof_helper(_Array))
}
# endif
# endif
#else
# define _countof(_Array) (sizeof(_Array) / sizeof(_Array[0]))
#endif
// csf_countof
#define csf_countof(anArray) _countof(anArray)
// csf_sprintf
#ifdef _WIN32
// Unlike snprintf, sprintf_s guarantees that the buffer will be null-terminated
// (unless the buffer size is zero).
# define csf_sprintf(/* char* */ buffer, \
/* size_t */ sizeOfBufferInCharsInclNullTerm, \
/* const char * */ format, ...) \
_snprintf_s(buffer, sizeOfBufferInCharsInclNullTerm, _TRUNCATE, format, \
__VA_ARGS__)
#else
# define csf_sprintf(/* char */ buffer, \
/* size_t */ sizeOfBufferInCharsInclNullTerm, \
/* const char * */ format, ...) \
snprintf(buffer, sizeOfBufferInCharsInclNullTerm, format, __VA_ARGS__); \
buffer[sizeOfBufferInCharsInclNullTerm - 1] = '\0'
#endif
// csf_vsprintf
#ifdef _WIN32
# define csf_vsprintf(/* char* */ buffer, \
/* size_t */ sizeOfBufferInCharsInclNullTerm, \
/* const char * */ format, /* va_list */ vaList) \
vsnprintf_s(buffer, sizeOfBufferInCharsInclNullTerm, _TRUNCATE, format, \
vaList); \
buffer[sizeOfBufferInCharsInclNullTerm - 1] = '\0'
#else
# define csf_vsprintf(/* char */ buffer, \
/* size_t */ sizeOfBufferInCharsInclNullTerm, \
/* const char * */ format, /* va_list */ vaList) \
vsprintf(buffer, format, vaList); \
buffer[sizeOfBufferInCharsInclNullTerm - 1] = '\0'
#endif
#endif
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