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<?php
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/*
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meta.inc
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part of pfSense (https://www.pfsense.org)
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Copyright (C) 2008 Shrew Soft Inc
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Copyright (c) 2008-2016 Electric Sheep Fencing, LLC.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. All advertising materials mentioning features or use of this software
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must display the following acknowledgment:
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"This product includes software developed by the pfSense Project
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for use in the pfSense® software distribution. (http://www.pfsense.org/).
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4. The names "pfSense" and "pfSense Project" must not be used to
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endorse or promote products derived from this software without
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prior written permission. For written permission, please contact
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coreteam@pfsense.org.
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5. Products derived from this software may not be called "pfSense"
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nor may "pfSense" appear in their names without prior written
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permission of the Electric Sheep Fencing, LLC.
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6. Redistributions of any form whatsoever must retain the following
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acknowledgment:
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"This product includes software developed by the pfSense Project
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for use in the pfSense software distribution (http://www.pfsense.org/).
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THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
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EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR
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ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* The meta data format used in pfSense is denoted using markers
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* followed by the appropriate value or value pair. All markers
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* are prefixed with a ##| sequence. The + suffix is used to
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* denote the beginning of a tag block followed by the tag name.
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* A - suffix is used to denote the end of a tag block. Values
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* are denoted using the * suffix and can optionally be expressed
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* as a key value pair. An example of a metadata tag block ...
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*
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* ###|+INFO
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* ###|*BLAH
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* ###|*TEXT=SOME TEXT
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* ###|-INFO
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*
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* After calling read_file_metadata, the result array would
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* contain the following information ...
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*
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* metadata['<filename>']['INFO']['BLAH'][0] == true
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* metadata['<filename>']['INFO']['TEXT'][0] == "SOME TEXT"
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*
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* NOTE: All statements must be at the beginning of a line and
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* contiguous for a tag. The example shown above would not be
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* processed due to the extra ' * ' comment chars.
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*
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*/
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/*
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* locate php files for a given path
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*/
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function list_phpfiles($path, & $found) {
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if (!is_array($found)) {
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$found = array();
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}
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$dir = opendir($path);
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if (!$dir) {
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printf(gettext("list_phpfiles: unable to examine path %s\n"), $path);
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return;
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}
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while ($fname = readdir($dir)) {
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if ($fname == "." || $fname == ".." || $fname[0] == '.') {
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continue;
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}
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if (fnmatch('*.php', $fname)) {
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$found[] = $fname;
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}
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}
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}
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/*
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* read embedded metadata from a file
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*/
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function read_file_metadata($fpath, & $metadata, $taglist = false) {
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if (!is_array($metadata)) {
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$metadata = array();
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}
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if ($taglist) {
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$taglist = explode(",", $taglist);
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}
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$fname = $fpath;
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$slash = strrpos($fname, "/");
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if ($slash) {
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$fname = substr($fname, $slash + 1);
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}
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$fdata = @file_get_contents($fpath);
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if (!$fdata) {
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printf(gettext("unable to read %s\n"), $fpath);
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continue;
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}
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$offset = 0;
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$tags = array();
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while (true) {
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$tagbeg_off = stripos($fdata, "##|+", $offset);
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if ($tagbeg_off === false) {
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break;
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}
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$tagbeg_trm = stripos($fdata, "\n", $tagbeg_off);
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if ($tagbeg_trm === false) {
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break;
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}
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$tagend_off = stripos($fdata, "##|-", $tagbeg_trm);
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if ($tagend_off === false) {
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break;
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}
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$tagend_trm = stripos($fdata, "\n", $tagend_off);
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if ($tagend_trm === false) {
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break;
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}
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$tagbeg_len = $tagbeg_trm - $tagbeg_off;
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$tagend_len = $tagend_trm - $tagend_off;
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$tagbeg = substr($fdata, $tagbeg_off + 4, $tagbeg_len - 4);
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$tagend = substr($fdata, $tagend_off + 4, $tagend_len - 4);
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if ($tagbeg != $tagend) {
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printf(gettext("error: tag mismatch ( %1\$s != %2\$s ) in '%3\$s'%4\$s"), $tagbeg, $tagend, $fpath, "\n");
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break;
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}
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$mdata_off = $tagbeg_trm + 1;
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$mdata_trm = $tagend_off - 1;
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$mdata_len = $mdata_trm - $mdata_off;
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$mdata = substr($fdata, $mdata_off, $mdata_len);
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if (!strlen($mdata)) {
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printf(gettext("warning: tag %1\$s has no data in '%2\$s'%3\$s"), $tagbeg, $fpath, "\n");
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break;
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}
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$offset = $tagend_trm + 1;
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if (is_array($taglist)) {
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if (!in_array($tagbeg, $taglist)) {
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continue;
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}
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}
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$vals = array();
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$lines = explode("\n", $mdata);
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foreach ($lines as $line) {
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if (!strlen($line)) {
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continue;
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}
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$valtag = stripos($line, "##|*");
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if ($valtag === false || $valtag) {
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printf(gettext("warning: tag %1\$s has malformed data in '%2\$s'%3\$s"), $tagbeg, $fpath, "\n");
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continue;
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}
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$value = substr($line, 4, strlen($line) - 1);
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$vlist = explode("=", $value);
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unset($vname);
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unset($vdata);
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switch (count($vlist)) {
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case 1:
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$vname = $vlist[0];
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$vdata = true;
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break;
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case 2:
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$vname = $vlist[0];
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$vdata = $vlist[1];
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break;
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}
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if (!isset($vname) || !isset($vdata)) {
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printf(gettext("warning: tag %1\$s has invalid data in '%2\$s'%3\$s"), $tagbeg, $fpath, "\n");
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continue;
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}
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$vals[$vname][] = $vdata;
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}
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if (count($vals)) {
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$tags[$tagbeg] = $vals;
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}
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}
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if (count($tags)) {
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$metadata[$fname] = $tags;
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}
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}
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?>
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