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/*
* fnmatch.c - Provide an interface to fnmatch(3) routine
*
* Arnold Robbins
* arnold@skeeve.com
* Written 7/2012
*/
/*
* Copyright (C) 2012, 2013 the Free Software Foundation, Inc.
*
* This file is part of GAWK, the GNU implementation of the
* AWK Programming Language.
*
* GAWK 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 3 of the License, or
* (at your option) any later version.
*
* GAWK 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "gawkapi.h"
#include "gettext.h"
#define _(msgid) gettext(msgid)
#define N_(msgid) msgid
#ifdef __VMS
#define __iswctype iswctype
#define __btowc btowc
#endif
#define _GNU_SOURCE 1 /* use GNU extensions if they're there */
#ifdef HAVE_FNMATCH_H
#include <fnmatch.h>
#else
#ifdef __VMS
#include "fnmatch.h" /* version that comes with gawk */
#else
#include "../missing_d/fnmatch.h" /* version that comes with gawk */
#endif
#define HAVE_FNMATCH_H
#endif
#ifndef HAVE_FNMATCH
#ifdef __VMS
#include "fnmatch.c" /* ditto */
#else
#include "../missing_d/fnmatch.c" /* ditto */
#endif
#define HAVE_FNMATCH
#endif
/* Provide GNU extensions as no-ops if not defined */
#ifndef FNM_CASEFOLD
#define FNM_CASEFOLD 0
#endif
#ifndef FNM_LEADING_DIR
#define FNM_LEADING_DIR 0
#endif
#ifndef FNM_FILE_NAME
#define FNM_FILE_NAME 0
#endif
static const gawk_api_t *api; /* for convenience macros to work */
static awk_ext_id_t *ext_id;
static const char *ext_version = "fnmatch extension: version 1.0";
static awk_bool_t init_fnmatch(void);
static awk_bool_t (*init_func)(void) = init_fnmatch;
int plugin_is_GPL_compatible;
/* do_fnmatch --- implement the fnmatch interface */
static awk_value_t *
do_fnmatch(int nargs, awk_value_t *result)
{
#ifdef HAVE_FNMATCH_H
static int flags_mask =
FNM_CASEFOLD | FNM_FILE_NAME |
FNM_LEADING_DIR | FNM_NOESCAPE |
FNM_PATHNAME | FNM_PERIOD ;
#endif
awk_value_t pattern, string, flags;
int int_flags, retval;
make_number(-1.0, result); /* default return */
#ifdef HAVE_FNMATCH
if (nargs < 3) {
warning(ext_id, _("fnmatch: called with less than three arguments"));
goto out;
} else if (do_lint && nargs > 3)
lintwarn(ext_id, _("fnmatch: called with more than three arguments"));
if (! get_argument(0, AWK_STRING, & pattern)) {
warning(ext_id, _("fnmatch: could not get first argument"));
goto out;
}
if (! get_argument(1, AWK_STRING, & string)) {
warning(ext_id, _("fnmatch: could not get second argument"));
goto out;
}
if (! get_argument(2, AWK_NUMBER, & flags)) {
warning(ext_id, _("fnmatch: could not get third argument"));
goto out;
}
int_flags = flags.num_value;
int_flags &= flags_mask;
retval = fnmatch(pattern.str_value.str,
string.str_value.str, int_flags);
make_number((double) retval, result);
out:
#else
fatal(ext_id, _("fnmatch is not implemented on this system\n"));
#endif
return result;
}
#define ENTRY(x) { #x, FNM_##x }
static struct fnmflags {
const char *name;
int value;
} flagtable[] = {
ENTRY(CASEFOLD),
ENTRY(FILE_NAME),
ENTRY(LEADING_DIR),
ENTRY(NOESCAPE),
ENTRY(PATHNAME),
ENTRY(PERIOD),
{ NULL, 0 }
};
/* init_fnmatch --- load array with flags */
static awk_bool_t
init_fnmatch(void)
{
int errors = 0;
#ifdef HAVE_FNMATCH
awk_value_t index, value, the_array;
awk_array_t new_array;
int i;
if (! sym_update("FNM_NOMATCH", make_number(FNM_NOMATCH, & value))) {
warning(ext_id, _("fnmatch init: could not add FNM_NOMATCH variable"));
errors++;
}
new_array = create_array();
for (i = 0; flagtable[i].name != NULL; i++) {
(void) make_const_string(flagtable[i].name,
strlen(flagtable[i].name), & index);
(void) make_number(flagtable[i].value, & value);
if (! set_array_element(new_array, & index, & value)) {
warning(ext_id, _("fnmatch init: could not set array element %s"),
flagtable[i].name);
errors++;
}
}
the_array.val_type = AWK_ARRAY;
the_array.array_cookie = new_array;
if (! sym_update("FNM", & the_array)) {
warning(ext_id, _("fnmatch init: could not install FNM array"));
errors++;
}
#endif
return errors == 0;
}
static awk_ext_func_t func_table[] = {
{ "fnmatch", do_fnmatch, 3 },
};
/* define the dl_load function using the boilerplate macro */
dl_load_func(func_table, fnmatch, "")
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