47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/*
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* C99-compatible snprintf() and vsnprintf() implementations
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* Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; 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 AVCOMPAT_SNPRINTF_H
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#define AVCOMPAT_SNPRINTF_H
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#include <stdarg.h>
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#include <stdio.h>
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/*
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* snprintf() on MSVCRT returns -1 (instead of required buffer length)
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* if the input buffer isn't big enough. Also, if the required buffer
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* length is exactly identical to the input buffer size, or if the
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* return value is -1 because the input buffer isn't big enough, MSVCRT
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* will fail to NULL-terminate the output buffer. vsnprintf() has the
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* same issue.
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*
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* Thus, provide our own fallback wrappers with correct behaviour.
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*/
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#undef snprintf
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#define snprintf avpriv_snprintf
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int snprintf(char *restrict s, size_t n, const char *restrict format, ...);
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#undef vsnprintf
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#define vsnprintf avpriv_vsnprintf
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int vsnprintf(char *restrict s, size_t n, const char *restrict format, va_list ap);
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#endif /* AVCOMPAT_SNPRINTF_H */
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