45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
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/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <malloc.h>
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// _snprintf/vsnprintf are fine, except the 'F' specifier is not handled
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int snprintf(char *dest, size_t count, const char *format, ...) {
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const size_t fmtLen = strlen(format) + 1;
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char *fixedFmt = alloca(fmtLen);
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for (size_t i = 0; i < fmtLen; ++i)
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fixedFmt[i] = format[i] == 'F' ? 'f' : format[i];
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va_list args;
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va_start(args, format);
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const int ret = vsnprintf(dest, count, fixedFmt, args);
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va_end(args);
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return ret;
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}
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