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/*
* errno.c -- look up errno names and descriptions
* Copyright 2012 Lars Wirzenius (liw@iki.fi)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <ctype.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static struct {
const char *name;
int code;
} errnos[] = {
#include "errnos.h"
};
static const int num_errnos = sizeof(errnos) / sizeof(errnos[0]);
static void
report(const char *name, int code)
{
printf("%s %d %s\n", name, code, strerror(code));
}
static bool
report_from_name(const char *name)
{
int i;
for (i = 0; i < num_errnos; ++i) {
if (strcasecmp(errnos[i].name, name) == 0) {
report(errnos[i].name, errnos[i].code);
return true;
}
}
return false;
}
static bool
report_from_code(int code)
{
int i;
for (i = 0; i < num_errnos; ++i) {
if (errnos[i].code == code) {
report(errnos[i].name, code);
return true;
}
}
return false;
}
int
main(int argc, char **argv)
{
int i;
int exit_code;
exit_code = EXIT_SUCCESS;
for (i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (toupper(arg[0]) == 'E') {
if (!report_from_name(arg))
exit_code = EXIT_FAILURE;
} else if (isdigit(arg[0])) {
if (!report_from_code(atoi(arg)))
exit_code = EXIT_FAILURE;
} else {
fprintf(stderr, "ERROR: Not understood: %s\n", arg);
exit_code = EXIT_FAILURE;
}
}
return exit_code;
}
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