diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | LICENSE | 14 | ||||
| -rw-r--r-- | Makefile | 20 | ||||
| -rw-r--r-- | main.c | 113 |
4 files changed, 148 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..e943218 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +lux @@ -0,0 +1,14 @@ +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. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..7657cff --- /dev/null +++ b/Makefile @@ -0,0 +1,20 @@ +.POSIX: + +LDFLAGS = -llux +CFLAGS = -std=c11 -O3 -pipe -Wall -Wextra -Werror -pedantic +PREFIX = /usr +MANDIR = ${PREFIX}/share/man + +target = lux + +all: ${target} +${target}: main.c + ${CC} ${CFLAGS} ${LDFLAGS} -o $@ $< + +install: + mkdir -p ${PREFIX}/bin ${MANDIR}/man1 + cp ${target} ${PREFIX}/bin + cp *.1 ${MANDIR}/man1 + +clean: + rm -f ${target} @@ -0,0 +1,113 @@ +/* + * 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); +} |