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1 /* Copyright the libuv project contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #if defined(_MSC_VER) && _MSC_VER < 1900
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23
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24 #include <stdio.h>
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25 #include <stdarg.h>
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26
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27 /* Emulate snprintf() on MSVC<2015, _snprintf() doesn't zero-terminate the buffer
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28 * on overflow...
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29 */
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30 int snprintf(char* buf, size_t len, const char* fmt, ...) {
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31 int n;
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32 va_list ap;
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33 va_start(ap, fmt);
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34
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35 n = _vscprintf(fmt, ap);
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36 vsnprintf_s(buf, len, _TRUNCATE, fmt, ap);
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37
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38 va_end(ap);
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39 return n;
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40 }
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41
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42 #endif
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