kc3-lang/libbsd/src/err.c

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• Hash : 9628798d
  Author :
  Date : 2019-08-06T15:37:43
  

  err: Rewrite warnc() and errc() family functions to be standalone Do not depend on the system vwarn() and verr() functions to implement the *c() variants, as the system might actually lack any of the <err.h> BSD extensions.

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• src/err.c

• /*
   * Copyright © 2006 Robert Millan
   * Copyright © 2011, 2019 Guillem Jover <guillem@hadrons.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <err.h>
  #ifdef LIBBSD_NEED_ERR_H_FUNCS
  #include <errno.h>
  #endif
  #include <string.h>
  #include <stdarg.h>
  #include <stdlib.h>
  #include <stdio.h>
  
  void
  vwarnc(int code, const char *format, va_list ap)
  {
  	fprintf(stderr, "%s: ", getprogname());
  	if (format) {
  		vfprintf(stderr, format, ap);
  		fprintf(stderr, ": ");
  	}
  	fprintf(stderr, "%s\n", strerror(code));
  }
  
  void
  warnc(int code, const char *format, ...)
  {
  	va_list ap;
  
  	va_start(ap, format);
  	vwarnc(code, format, ap);
  	va_end(ap);
  }
  
  void
  verrc(int status, int code, const char *format, va_list ap)
  {
  	fprintf(stderr, "%s: ", getprogname());
  	if (format) {
  		vfprintf(stderr, format, ap);
  		fprintf(stderr, ": ");
  	}
  	fprintf(stderr, "%s\n", strerror(code));
  	exit(status);
  }
  
  void
  errc(int status, int code, const char *format, ...)
  {
  	va_list ap;
  
  	va_start(ap, format);
  	verrc(status, code, format, ap);
  	va_end(ap);
  }
  
  #ifdef LIBBSD_NEED_ERR_H_FUNCS
  void
  vwarn(const char *format, va_list ap)
  {
  	vwarnc(errno, format, ap);
  }
  
  void
  warn(const char *format, ...)
  {
  	va_list ap;
  
  	va_start(ap, format);
  	vwarnc(errno, format, ap);
  	va_end(ap);
  }
  
  void
  vwarnx(const char *format, va_list ap)
  {
  	fprintf(stderr, "%s: ", getprogname());
  	if (format)
  		vfprintf(stderr, format, ap);
  	fprintf(stderr, "\n");
  }
  
  void
  warnx(const char *format, ...)
  {
  	va_list ap;
  
  	va_start(ap, format);
  	vwarnx(format, ap);
  	va_end(ap);
  }
  
  void
  verr(int status, const char *format, va_list ap)
  {
  	verrc(status, errno, format, ap);
  }
  
  void
  err(int status, const char *format, ...)
  {
  	va_list ap;
  
  	va_start(ap, format);
  	verrc(status, errno, format, ap);
  	va_end(ap);
  }
  
  void
  verrx(int eval, const char *format, va_list ap)
  {
  	fprintf(stderr, "%s: ", getprogname());
  	if (format)
  		vfprintf(stderr, format, ap);
  	fprintf(stderr, "\n");
  	exit(eval);
  }
  
  void
  errx(int eval, const char *format, ...)
  {
  	va_list ap;
  
  	va_start(ap, format);
  	verrx(eval, format, ap);
  	va_end(ap);
  }
  #endif
  

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