Commit 9628798d authored by Guillem Jover's avatar Guillem Jover

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.
parent f34a5f71
......@@ -81,7 +81,7 @@ Files:
src/fgetln.c
src/progname.c
Copyright:
Copyright © 2005, 2008-2012 Guillem Jover <guillem@hadrons.org>
Copyright © 2005, 2008-2012, 2019 Guillem Jover <guillem@hadrons.org>
Copyright © 2005 Hector Garcia Alvarez
Copyright © 2005 Aurelien Jarno
Copyright © 2006 Robert Millan
......
......@@ -43,15 +43,15 @@
#include <stdarg.h>
__BEGIN_DECLS
void warnc(int code, const char *format, ...)
__printflike(2, 3);
void vwarnc(int code, const char *format, va_list ap)
__printflike(2, 0);
void warnc(int code, const char *format, ...)
__printflike(2, 3);
void errc(int status, int code, const char *format, ...)
__printflike(3, 4) __dead2;
void verrc(int status, int code, const char *format, va_list ap)
__printflike(3, 0) __dead2;
void errc(int status, int code, const char *format, ...)
__printflike(3, 4) __dead2;
__END_DECLS
#endif
/*
* Copyright © 2006 Robert Millan
* Copyright © 2011 Guillem Jover <guillem@hadrons.org>
* 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
......@@ -26,8 +26,21 @@
*/
#include <err.h>
#include <errno.h>
#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, ...)
......@@ -40,13 +53,15 @@ warnc(int code, const char *format, ...)
}
void
vwarnc(int code, const char *format, va_list ap)
verrc(int status, int code, const char *format, va_list ap)
{
int tmp = errno;
errno = code;
vwarn(format, ap);
errno = tmp;
fprintf(stderr, "%s: ", getprogname());
if (format) {
vfprintf(stderr, format, ap);
fprintf(stderr, ": ");
}
fprintf(stderr, "%s\n", strerror(code));
exit(status);
}
void
......@@ -58,10 +73,3 @@ errc(int status, int code, const char *format, ...)
verrc(status, code, format, ap);
va_end(ap);
}
void
verrc(int status, int code, const char *format, va_list ap)
{
errno = code;
verr(status, format, ap);
}
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