85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/* ************************************************************************** */
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/* _____ _ */
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/* args.c |_ _|__ _ _| |__ ___ _ _ */
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/* | Project: p7test | |/ _ \| | | | '_ \ / _ \ | | | */
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/* | | (_) | |_| | | | | __/ |_| | */
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/* By: thomas <thomas@touhey.fr> |_|\___/ \__,_|_| |_|\___|\__, |.fr */
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/* Last updated: 2017/01/13 00:52:20 |___/ */
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/* */
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/* ************************************************************************** */
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#include "main.h"
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#include <getopt.h>
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#define Q(x) #x
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#define QUOTE(x) Q(x)
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/* ************************************************************************** */
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/* Help and version messages */
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/* ************************************************************************** */
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/* Version message */
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static const char version_message[] =
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QUOTE(BIN) " v" QUOTE(VERSION) " (licensed under GPLv2)\n"
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"Maintained by " QUOTE(MAINTAINER) ".\n"
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"\n"
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"This is free software; see the source for copying conditions.\n"
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"There is NO warranty; not even for MERCHANTABILITY or\n"
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"FITNESS FOR A PARTICULAR PURPOSE.";
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/* Main help message */
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static const char help_main[] =
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"Usage: " QUOTE(BIN) " [--help] [--version]\n"
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"\n"
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"General options:\n"
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" -h, --help Display the help page of the (sub)command and quit.\n"
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" -v, --version Display the version message and quit.\n"
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"\n"
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"Report bugs to " QUOTE(MAINTAINER) ".";
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/* ************************************************************************** */
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/* Main args parsing function */
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/* ************************************************************************** */
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/**
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* parse_args:
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* Args parsing main function.
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*
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* @arg ac the arguments count.
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* @arg av the arguments values.
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* @return if execution should stop after this call.
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*/
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int parse_args(int ac, char **av)
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{
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/* define options */
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const char shopts[] = "hv";
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const struct option longopts[] = {
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{"help", no_argument, NULL, 'h'},
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{"version", no_argument, NULL, 'v'},
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{NULL, 0, NULL, 0}
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};
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/* get all options */
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int c; opterr = 0;
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int help = 0, version = 0;
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while ((c = getopt_long(ac, av, shopts, longopts, NULL)) >= 0) switch (c) {
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case 'h': help = 1; break;
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case 'v': version = 1; break;
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case '?': break;
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}
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/* get parameters */
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int pc = ac - optind;
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if (pc) help = 1;
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/* print help or version */
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if (help) {
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puts(help_main);
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return (1);
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} else if (version) {
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puts(version_message);
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return (1);
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}
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/* no problem */
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return (0);
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}
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