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#ifndef SG_PR2SERR_H
#define SG_PR2SERR_H
/*
* Copyright (c) 2004-2018 Douglas Gilbert.
* All rights reserved.
* Use of this source code is governed by a BSD-style
* license that can be found in the BSD_LICENSE file.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
/* These are convenience functions that replace the somewhat long-winded
* fprintf(stderr, ....). The second form (i.e. pr2ws() ) is for internal
* library use and may place its output somewhere other than stderr; it
* depends on the external variable sg_warnings_strm which can be set
* with sg_set_warnings_strm(). By default it uses stderr. */
/* With regard to sg_scnpr():
* Want safe, 'n += snprintf(b + n, blen - n, ...)' style sequence of
* functions. Returns number of chars placed in cp excluding the
* trailing null char. So for cp_max_len > 0 the return value is always
* < cp_max_len; for cp_max_len <= 1 the return value is 0 and no chars are
* written to cp. Note this means that when cp_max_len = 1, this function
* assumes that cp[0] is the null character and does nothing (and returns
* 0). Linux kernel has a similar function called scnprintf(). */
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__GNUC__) || defined(__clang__)
#ifdef SG_LIB_MINGW
/* MinGW uses Microsoft's printf */
int pr2serr(const char * fmt, ...);
int pr2ws(const char * fmt, ...);
int sg_scnpr(char * cp, int cp_max_len, const char * fmt, ...);
#else /* GNU/clang other than MinGW */
int pr2serr(const char * fmt, ...)
__attribute__ ((format (printf, 1, 2)));
int pr2ws(const char * fmt, ...)
__attribute__ ((format (printf, 1, 2)));
int sg_scnpr(char * cp, int cp_max_len, const char * fmt, ...)
__attribute__ ((format (printf, 3, 4)));
#endif
#else /* not GNU (and not clang) */
int pr2serr(const char * fmt, ...);
int pr2ws(const char * fmt, ...);
int sg_scnpr(char * cp, int cp_max_len, const char * fmt, ...);
#endif
#ifdef __cplusplus
}
#endif
#endif
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