sbase/libutil/eprintf.c

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/* See LICENSE file for copyright and license details. */
#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../util.h"
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char *argv0;
static void xvprintf(const char *, va_list);
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void
eprintf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
xvprintf(fmt, ap);
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va_end(ap);
exit(1);
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}
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void
enprintf(int status, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
xvprintf(fmt, ap);
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va_end(ap);
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exit(status);
}
void
weprintf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
xvprintf(fmt, ap);
va_end(ap);
}
void
xvprintf(const char *fmt, va_list ap)
{
if (argv0 && strncmp(fmt, "usage", strlen("usage")))
fprintf(stderr, "%s: ", argv0);
vfprintf(stderr, fmt, ap);
if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
fputc(' ', stderr);
perror(NULL);
}
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}