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40112e7b35
* qatar/master: fate: Allow setting the ld parameter from the config file x86: dsputil: Do not redundantly check for CPU caps before calling init funcs configure: Disable some warnings in MSVC x86: vp56: cmov version of vp56_rac_get_prob requires inline asm avopt: fix examples to match the same style about default values as the actual code. configure: Add support for MSVC cl.exe/link.exe lavu: add snprintf(), vsnprint() and strtod() replacements for MS runtime. Conflicts: libavutil/opt.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
64 lines
1.9 KiB
C
64 lines
1.9 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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#include <stdio.h>
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#include <stdarg.h>
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#include <limits.h>
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#include <string.h>
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#include "libavutil/error.h"
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int avpriv_snprintf(char *s, size_t n, const char *fmt, ...)
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{
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va_list ap;
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int ret;
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va_start(ap, fmt);
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ret = avpriv_vsnprintf(s, n, fmt, ap);
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va_end(ap);
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return ret;
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}
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int avpriv_vsnprintf(char *s, size_t n, const char *fmt,
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va_list ap)
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{
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int ret;
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if (n == 0)
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return 0;
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else if (n > INT_MAX)
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return AVERROR(EOVERFLOW);
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/* we use n - 1 here because if the buffer is not big enough, the MS
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* runtime libraries don't add a terminating zero at the end. MSDN
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* recommends to provide _snprintf/_vsnprintf() a buffer size that
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* is one less than the actual buffer, and zero it before calling
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* _snprintf/_vsnprintf() to workaround this problem.
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* See http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
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memset(s, 0, n);
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ret = _vsnprintf(s, n - 1, fmt, ap);
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if (ret == -1)
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ret = n;
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return ret;
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}
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