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/*
* Copyright 2016 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include <cstdarg>
#include <cstdio>
/* c99-style vsnprintf for MSVC < 2015. See http://stackoverflow.com/a/8712996
using _snprintf or vsnprintf will not-properly null-terminate, and will return
-1 instead of the number of characters needed on overflow. */
#if COMPILER_IS_MSVC
int wabt_vsnprintf(char* str, size_t size, const char* format, va_list ap) {
int result = -1;
if (size != 0)
result = _vsnprintf_s(str, size, _TRUNCATE, format, ap);
if (result == -1)
result = _vscprintf(format, ap);
return result;
}
#if !HAVE_SNPRINTF
int wabt_snprintf(char* str, size_t size, const char* format, ...) {
va_list args;
va_start(args, format);
int result = wabt_vsnprintf(str, size, format, args);
va_end(args);
return result;
}
#endif
#endif
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