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74 lines
3.1 KiB
C
74 lines
3.1 KiB
C
/*
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* The Minimal snprintf() implementation
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*
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* Copyright (c) 2013 Michal Ludvig <michal@logix.cz>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the auhor nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __MINI_PRINTF__
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#define __MINI_PRINTF__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdarg.h>
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#ifdef MINI_PRINTF_ENABLE_OBJECTS
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/* If enabled, callback for object types (O and R).
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* void* arguments matching %O and %R are sent to handler as obj.
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* the result string created by handler at *buf is freed by freeor.
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* */
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void mini_printf_set_handler(
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void * data,
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/* handler returns number of chars in *buf; *buf is not NUL-terminated. */
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int (*handler)(void* data, void* obj, int ch, int len_hint, char** buf),
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void (*freeor)(void* data, void* buf));
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#endif
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/* String IO interface; returns number of bytes written, not including the ending NUL.
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* Always appends a NUL at the end, therefore buffer_len shall be at least 1 in normal operation.
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* If buffer is NULL or buffer_len is 0, returns number of bytes to be written, not including the ending NUL.
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*/
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int mini_vsnprintf(char* buffer, unsigned int buffer_len, const char *fmt, va_list va);
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int mini_snprintf(char* buffer, unsigned int buffer_len, const char *fmt, ...);
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/* Stream IO interface; returns number of bytes written.
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* If puts is NULL, number of bytes to be written.
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* puts shall return number of bytes written.
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*/
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int mini_vpprintf(int (*puts)(char* s, int len, void* buf), void* buf, const char *fmt, va_list va);
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int mini_pprintf(int (*puts)(char*s, int len, void* buf), void* buf, const char *fmt, ...);
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#ifdef __cplusplus
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}
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#endif
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// #define vsnprintf mini_vsnprintf
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// #define snprintf mini_snprintf
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#endif
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