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/*
* BSD Zero Clause License
*
* Copyright (c) 2022 Thomas Voss
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#define _POSIX_C_SOURCE 2
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <lux.h>
static int parseint(char *);
static double parsedouble(char *);
static void usage(char *);
int
main(int argc, char **argv)
{
int opt;
struct luxdisp disp;
luxinit(&disp);
if (argc == 1)
goto Gflag;
else while ((opt = getopt(argc, argv, ":d:D:gGi:I:s:S:")) != -1) {
switch (opt) {
case 'g':;
int br;
if ((br = luxget(&disp)) == -1)
err(EXIT_FAILURE, "luxget");
printf("%d\n", br);
break;
case 'G':
Gflag:;
double pr;
if ((pr = luxgetp(&disp)) == -1)
err(EXIT_FAILURE, "luxgetp");
printf("%f\n", pr);
break;
case 'd':
if (luxdec(&disp, parseint(optarg)) == -1)
err(EXIT_FAILURE, "luxdec");
break;
case 'i':
if (luxinc(&disp, parseint(optarg)) == -1)
err(EXIT_FAILURE, "luxinc");
break;
case 's':
if (luxset(&disp, parseint(optarg)) == -1)
err(EXIT_FAILURE, "luxset");
break;
case 'D':
if (luxdecp(&disp, parsedouble(optarg)) == -1)
err(EXIT_FAILURE, "luxdecp");
break;
case 'I':
if (luxincp(&disp, parsedouble(optarg)) == -1)
err(EXIT_FAILURE, "luxincp");
break;
case 'S':
if (luxsetp(&disp, parsedouble(optarg)) == -1)
err(EXIT_FAILURE, "luxsetp");
break;
default:
usage(argv[0]);
}
}
luxfree(&disp);
return EXIT_SUCCESS;
}
int
parseint(char *s)
{
char *endptr;
long n = strtol(optarg, &endptr, 0);
if (*s != '\0' && *endptr == '\0')
return (int) n;
errx(EXIT_FAILURE, "parseint: invalid integer '%s'", s);
}
double
parsedouble(char *s)
{
char *endptr;
double n = strtod(optarg, &endptr);
if (*s != '\0' && *endptr == '\0')
return n;
errx(EXIT_FAILURE, "parsedouble: invalid double '%s'", s);
}
void
usage(char *s)
{
fprintf(stderr, "Usage: %s [-g | -dDiIsS val]\n", s);
exit(EXIT_FAILURE);
}
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