#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include "client.h"

int str_to_int(char *str, const char *var, int lower, int upper)
{
	char *endptr;
	long value;
	errno=0;
	value=strtol(str, &endptr, 10);
	if (!*str || *endptr)
	{
		fprintf(stderr, "%s: set variable %s: '%s' is not numeric\n",
			progname, var, str);
		exit(1);
	}
	if (errno)
	{
		fprintf(stderr, "%s: set variable %s: %s\n",
			progname, var, strerror(errno));
		exit(1);
	}
	if (value<lower || value>upper)
	{
		fprintf(stderr, "%s: set variable %s: '%li' is "
			"out of range [%i..%i]\n",
			progname, var, value, lower, upper);
		exit(1);
	}
	return value;
}

void die(const char *fmt, ...)
{
        va_list ap;
        va_start(ap, fmt);
        fprintf(stderr, "%s: ", progname);
        vfprintf(stderr, fmt, ap);
        va_end(ap);
        exit(1);
}

void warn(const char *fmt, ...)
{
        va_list ap;
        va_start(ap, fmt);
        fprintf(stderr, "%s: ", progname);
        vfprintf(stderr, fmt, ap);
        va_end(ap);
}