mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
257490366b
Add missing long options for --help and --version in util_prg_example. Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
/**
|
|
* util_prg_example - Example program for util_prg
|
|
*
|
|
* Copyright IBM Corp. 2016, 2017
|
|
*
|
|
* s390-tools is free software; you can redistribute it and/or modify
|
|
* it under the terms of the MIT license. See LICENSE for details.
|
|
*/
|
|
|
|
//! [code]
|
|
#include <getopt.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "lib/util_prg.h"
|
|
|
|
/*
|
|
* Program description
|
|
*/
|
|
const struct util_prg prg = {
|
|
.desc = "Sample for util_prg library.",
|
|
.args = "[POS_ARGS]",
|
|
.copyright_vec = {
|
|
{
|
|
.owner = "IBM Corp.",
|
|
.pub_first = 2001,
|
|
.pub_last = 2017,
|
|
},
|
|
{
|
|
.owner = "Another Corp.",
|
|
.pub_first = 2017,
|
|
.pub_last = 2017,
|
|
},
|
|
UTIL_PRG_COPYRIGHT_END
|
|
}
|
|
};
|
|
|
|
static const struct option opt_list[] = {
|
|
{ "help", no_argument, NULL, 'h' },
|
|
{ "version", no_argument, NULL, 'v' },
|
|
{ NULL, no_argument, NULL, 0 },
|
|
};
|
|
|
|
/*
|
|
* Demonstrate the util_prg_print() functions
|
|
*/
|
|
int main(int argc, char *argv[])
|
|
{
|
|
const char *file_name = "i_do_not_exist";
|
|
char optopt_str[3];
|
|
FILE *fp;
|
|
int opt;
|
|
|
|
/* Disable the getopt_long() error messages */
|
|
opterr = 0;
|
|
|
|
util_prg_init(&prg);
|
|
|
|
while ((opt = getopt_long(argc, argv, "vhe", opt_list, NULL)) != -1) {
|
|
switch (opt) {
|
|
case 'v':
|
|
util_prg_print_version();
|
|
return EXIT_SUCCESS;
|
|
case 'h':
|
|
util_prg_print_help();
|
|
printf(" -e Try to open non-exisiting file\n");
|
|
printf(" -h Print this help, then exit\n");
|
|
printf(" -v Print version information, then exit\n");
|
|
return EXIT_SUCCESS;
|
|
case 'e':
|
|
fp = fopen(file_name, "r");
|
|
if (!fp) {
|
|
err(EXIT_FAILURE, "Open of '%s' failed",
|
|
file_name);
|
|
}
|
|
return EXIT_SUCCESS;
|
|
case ':':
|
|
/* Option requires an argument */
|
|
util_prg_print_required_arg(argv[optind - 1]);
|
|
return EXIT_FAILURE;
|
|
case '?':
|
|
sprintf(optopt_str, "-%c", optopt);
|
|
util_prg_print_invalid_option(optopt_str);
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
if (argc > 2) {
|
|
util_prg_print_arg_error(argv[2]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
if (argc == 2) {
|
|
printf("Positional parameter specified: %s\n", argv[1]);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
errx(EXIT_FAILURE, "Specify either -h, -v, -e, or one positional "
|
|
"parameter");
|
|
}
|
|
//! [code]
|