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/**
* util_log_example - Example program for util_log
*
* Copyright IBM Corp. 2021
*
* 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 "lib/util_opt.h"
#include "lib/util_prg.h"
#include "lib/util_log.h"
static const struct util_prg prg = {
.desc = "Example for util_log.",
.copyright_vec = {
{
.owner = "IBM Corp.",
.pub_first = 2021,
.pub_last = 2021,
},
UTIL_PRG_COPYRIGHT_END
}
};
static struct util_opt opt_vec[] = {
{
.option = { "verbose", no_argument, NULL, 'V' },
.desc = "Print verbose messages to stderr. "
"This option may be given multiple times and "
"each time this option is given the verbosity level is "
"increased.",
},
UTIL_OPT_HELP,
UTIL_OPT_VERSION,
UTIL_OPT_END
};
int main(int argc, char *argv[])
{
int verbose = -1;
util_prg_init(&prg);
util_opt_init(opt_vec, NULL);
while (1) {
int opt = util_opt_getopt_long(argc, argv);
if (opt == -1)
break;
switch (opt) {
case 'h':
util_prg_print_help();
util_opt_print_help();
exit(EXIT_SUCCESS);
case 'v':
util_prg_print_version();
exit(EXIT_SUCCESS);
case 'V':
verbose++;
break;
case '?':
default:
fprintf(stderr, "Try '--help' for more information.\n");
exit(EXIT_FAILURE);
}
}
util_log_set_level(verbose);
util_log_print(UTIL_LOG_ERROR, "This is an ERROR message\n");
util_log_print(UTIL_LOG_WARN, "This is a WARN message\n");
util_log_print(UTIL_LOG_INFO, "This is an INFO message\n");
util_log_print(UTIL_LOG_DEBUG, "This is a DEBUG message\n");
util_log_print(UTIL_LOG_TRACE, "This is a TRACE message\n");
return EXIT_SUCCESS;
}
//! [code]
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