libite
2.6.1
src
fopenf.c
Go to the documentation of this file.
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/* Formatted fopen()
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*
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* Copyright (c) 2021 Joachim Wiberg <troglobit@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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FILE *
vfopenf
(
const
char
*mode,
const
char
*fmt, va_list ap)
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{
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va_list apc;
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char
*file;
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int
len;
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va_copy(apc, ap);
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len = vsnprintf(NULL, 0, fmt, apc);
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va_end(apc);
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file = alloca(len + 1);
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if
(!file) {
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errno = ENOMEM;
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return
NULL;
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}
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va_copy(apc, ap);
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vsnprintf(file, len + 1, fmt, apc);
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va_end(apc);
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return
fopen(file, mode);
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}
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FILE *
fopenf
(
const
char
*mode,
const
char
*fmt, ...)
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{
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va_list ap;
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FILE *fp;
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va_start(ap, fmt);
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fp =
vfopenf
(mode, fmt, ap);
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va_end(ap);
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if
(!fp)
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return
NULL;
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return
fp;
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}
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fopenf
FILE * fopenf(const char *mode, const char *fmt,...)
Definition
fopenf.c:75
vfopenf
FILE * vfopenf(const char *mode, const char *fmt, va_list ap)
Definition
fopenf.c:40
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