|
Packit Service |
f629e6 |
/*
|
|
Packit Service |
f629e6 |
* ordchr.c - Builtin functions that provide ord() and chr() functions.
|
|
Packit Service |
f629e6 |
*
|
|
Packit Service |
f629e6 |
* Arnold Robbins
|
|
Packit Service |
f629e6 |
* arnold@skeeve.com
|
|
Packit Service |
f629e6 |
* 8/2001
|
|
Packit Service |
f629e6 |
* Revised 6/2004
|
|
Packit Service |
f629e6 |
* Revised 5/2012
|
|
Packit Service |
f629e6 |
*/
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
/*
|
|
Packit Service |
f629e6 |
* Copyright (C) 2001, 2004, 2011, 2012, 2013 the Free Software Foundation, Inc.
|
|
Packit Service |
f629e6 |
*
|
|
Packit Service |
f629e6 |
* This file is part of GAWK, the GNU implementation of the
|
|
Packit Service |
f629e6 |
* AWK Programming Language.
|
|
Packit Service |
f629e6 |
*
|
|
Packit Service |
f629e6 |
* GAWK is free software; you can redistribute it and/or modify
|
|
Packit Service |
f629e6 |
* it under the terms of the GNU General Public License as published by
|
|
Packit Service |
f629e6 |
* the Free Software Foundation; either version 3 of the License, or
|
|
Packit Service |
f629e6 |
* (at your option) any later version.
|
|
Packit Service |
f629e6 |
*
|
|
Packit Service |
f629e6 |
* GAWK is distributed in the hope that it will be useful,
|
|
Packit Service |
f629e6 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit Service |
f629e6 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
Packit Service |
f629e6 |
* GNU General Public License for more details.
|
|
Packit Service |
f629e6 |
*
|
|
Packit Service |
f629e6 |
* You should have received a copy of the GNU General Public License
|
|
Packit Service |
f629e6 |
* along with this program; if not, write to the Free Software
|
|
Packit Service |
f629e6 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
Packit Service |
f629e6 |
*/
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
#ifdef HAVE_CONFIG_H
|
|
Packit Service |
f629e6 |
#include <config.h>
|
|
Packit Service |
f629e6 |
#endif
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
#include <stdio.h>
|
|
Packit Service |
f629e6 |
#include <assert.h>
|
|
Packit Service |
f629e6 |
#include <stdlib.h>
|
|
Packit Service |
f629e6 |
#include <string.h>
|
|
Packit Service |
f629e6 |
#include <unistd.h>
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
#include <sys/types.h>
|
|
Packit Service |
f629e6 |
#include <sys/stat.h>
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
#include "gawkapi.h"
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
#include "gettext.h"
|
|
Packit Service |
f629e6 |
#define _(msgid) gettext(msgid)
|
|
Packit Service |
f629e6 |
#define N_(msgid) msgid
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
static const gawk_api_t *api; /* for convenience macros to work */
|
|
Packit Service |
f629e6 |
static awk_ext_id_t ext_id;
|
|
Packit Service |
f629e6 |
static const char *ext_version = "ordchr extension: version 1.0";
|
|
Packit Service |
f629e6 |
static awk_bool_t (*init_func)(void) = NULL;
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
int plugin_is_GPL_compatible;
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
/* do_ord --- return numeric value of first char of string */
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
static awk_value_t *
|
|
Packit Service |
f629e6 |
do_ord(int nargs, awk_value_t *result, struct awk_ext_func *unused)
|
|
Packit Service |
f629e6 |
{
|
|
Packit Service |
f629e6 |
awk_value_t str;
|
|
Packit Service |
f629e6 |
double ret = -1;
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
assert(result != NULL);
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
if (get_argument(0, AWK_STRING, & str)) {
|
|
Packit Service |
f629e6 |
ret = str.str_value.str[0];
|
|
Packit Service |
f629e6 |
} else if (do_lint)
|
|
Packit Service |
f629e6 |
lintwarn(ext_id, _("ord: called with inappropriate argument(s)"));
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
/* Set the return value */
|
|
Packit Service |
f629e6 |
return make_number(ret, result);
|
|
Packit Service |
f629e6 |
}
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
/* do_chr --- turn numeric value into a string */
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
static awk_value_t *
|
|
Packit Service |
f629e6 |
do_chr(int nargs, awk_value_t *result, struct awk_ext_func *unused)
|
|
Packit Service |
f629e6 |
{
|
|
Packit Service |
f629e6 |
awk_value_t num;
|
|
Packit Service |
f629e6 |
unsigned int ret = 0;
|
|
Packit Service |
f629e6 |
double val = 0.0;
|
|
Packit Service |
f629e6 |
char str[2];
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
str[0] = str[1] = '\0';
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
assert(result != NULL);
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
if (get_argument(0, AWK_NUMBER, & num)) {
|
|
Packit Service |
f629e6 |
val = num.num_value;
|
|
Packit Service |
f629e6 |
ret = val; /* convert to int */
|
|
Packit Service |
f629e6 |
ret &= 0xff;
|
|
Packit Service |
f629e6 |
str[0] = ret;
|
|
Packit Service |
f629e6 |
str[1] = '\0';
|
|
Packit Service |
f629e6 |
} else if (do_lint)
|
|
Packit Service |
f629e6 |
lintwarn(ext_id, _("chr: called with inappropriate argument(s)"));
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
/* Set the return value */
|
|
Packit Service |
f629e6 |
return make_const_string(str, 1, result);
|
|
Packit Service |
f629e6 |
}
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
static awk_ext_func_t func_table[] = {
|
|
Packit Service |
f629e6 |
{ "ord", do_ord, 1, 1, awk_false, NULL },
|
|
Packit Service |
f629e6 |
{ "chr", do_chr, 1, 1, awk_false, NULL },
|
|
Packit Service |
f629e6 |
};
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
/* define the dl_load function using the boilerplate macro */
|
|
Packit Service |
f629e6 |
|
|
Packit Service |
f629e6 |
dl_load_func(func_table, ord_chr, "")
|