| 0,0 → 1,234 |
|---|
| <?php |
| |
| /* |
| * OIDplus 2.0 |
| * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| if (!defined('INSIDE_OIDPLUS')) die(); |
| |
| class OIDplusGs1 extends OIDplusObject { |
| private $number; |
| |
| public function __construct($number) { |
| // TODO: syntax checks |
| $this->number = $number; |
| } |
| |
| public static function parse($node_id) { |
| @list($namespace, $number) = explode(':', $node_id, 2); |
| if ($namespace !== 'gs1') return false; |
| return new self($number); |
| } |
| |
| public static function objectTypeTitle() { |
| return _L('GS1 Based IDs (GLN/GTIN/SSCC/...)'); |
| } |
| |
| public static function objectTypeTitleShort() { |
| return _L('GS1'); |
| } |
| |
| public static function ns() { |
| return 'gs1'; |
| } |
| |
| public static function root() { |
| return 'gs1:'; |
| } |
| |
| public function isRoot() { |
| return $this->number == ''; |
| } |
| |
| public function nodeId($with_ns=true) { |
| return $with_ns ? 'gs1:'.$this->number : $this->number; |
| } |
| |
| public function addString($str) { |
| $m = array(); |
| if (!preg_match('@^\\d+$@', $str, $m)) { |
| throw new OIDplusException(_L('GS1 value needs to be numeric')); |
| } |
| |
| return $this->nodeId() . $str; |
| } |
| |
| public function crudShowId(OIDplusObject $parent) { |
| return $this->chunkedNotation(false); |
| } |
| |
| public function crudInsertPrefix() { |
| return $this->isRoot() ? '' : $this->chunkedNotation(false); |
| } |
| |
| public function jsTreeNodeName(OIDplusObject $parent = null) { |
| if ($parent == null) return $this->objectTypeTitle(); |
| return substr($this->nodeId(), strlen($parent->nodeId())); |
| } |
| |
| public function defaultTitle() { |
| return $this->number; |
| } |
| |
| public function isLeafNode() { |
| return !$this->isBaseOnly(); |
| } |
| |
| public function getContentPage(&$title, &$content, &$icon) { |
| $icon = file_exists(__DIR__.'/icon_big.png') ? OIDplus::webPath(__DIR__,true).'/icon_big.png' : ''; |
| |
| if ($this->isRoot()) { |
| $title = OIDplusGs1::objectTypeTitle(); |
| |
| $res = OIDplus::db()->query("select * from ###objects where parent = ?", array(self::root())); |
| if ($res->num_rows() > 0) { |
| $content = _L('Please select an item in the tree view at the left to show its contents.'); |
| } else { |
| $content = _L('Currently, no GS1 based numbers are registered in the system.'); |
| } |
| |
| if (!$this->isLeafNode()) { |
| if (OIDplus::authUtils()->isAdminLoggedIn()) { |
| $content .= '<h2>'._L('Manage root objects').'</h2>'; |
| } else { |
| $content .= '<h2>'._L('Available objects').'</h2>'; |
| } |
| $content .= '%%CRUD%%'; |
| } |
| } else { |
| $title = $this->getTitle(); |
| |
| if ($this->isLeafNode()) { |
| $chunked = $this->chunkedNotation(true); |
| $checkDigit = $this->checkDigit(); |
| $content = '<h2>'.$chunked.' - <abbr title="'._L('check digit').'">'.$checkDigit.'</abbr></h2>'; |
| $content .= '<p><a target="_blank" href="https://www.ean-search.org/?q='.htmlentities($this->fullNumber()).'">'._L('Lookup at ean-search.org').'</a></p>'; |
| $content .= '<img src="'.OIDplus::webPath(__DIR__,true).'/barcode.php?number='.urlencode($this->fullNumber()).'">'; |
| $content .= '<h2>'._L('Description').'</h2>%%DESC%%'; // TODO: add more meta information about the object type |
| } else { |
| $chunked = $this->chunkedNotation(true); |
| $content = '<h2>'.$chunked.'</h2>'; |
| $content .= '<h2>'._L('Description').'</h2>%%DESC%%'; // TODO: add more meta information about the object type |
| if ($this->userHasWriteRights()) { |
| $content .= '<h2>'._L('Create or change subsequent objects').'</h2>'; |
| } else { |
| $content .= '<h2>'._L('Subsequent objects').'</h2>'; |
| } |
| $content .= '%%CRUD%%'; |
| } |
| } |
| } |
| |
| # --- |
| |
| public function isBaseOnly() { |
| return strlen($this->number) <= 7; |
| } |
| |
| public function chunkedNotation($withAbbr=true) { |
| $curid = 'gs1:'.$this->number; |
| |
| $res = OIDplus::db()->query("select id, title from ###objects where id = ?", array($curid)); |
| if ($res->num_rows() == 0) return $this->number; |
| |
| $hints = array(); |
| $lengths = array(strlen($curid)); |
| while (($res = OIDplus::db()->query("select parent, title from ###objects where id = ?", array($curid)))->num_rows() > 0) { |
| $row = $res->fetch_array(); |
| $curid = $row['parent']; |
| $hints[] = $row['title']; |
| $lengths[] = strlen($curid); |
| } |
| |
| array_shift($lengths); |
| $chunks = array(); |
| |
| $full = 'gs1:'.$this->number; |
| foreach ($lengths as $len) { |
| $chunks[] = substr($full, $len); |
| $full = substr($full, 0, $len); |
| } |
| |
| $hints = array_reverse($hints); |
| $chunks = array_reverse($chunks); |
| |
| $full = array(); |
| foreach ($chunks as $c) { |
| $full[] = $withAbbr ? '<abbr title="'.htmlentities(array_shift($hints)).'">'.$c.'</abbr>' : $c; |
| } |
| return implode(' ', $full); |
| } |
| |
| public function fullNumber() { |
| return $this->number . $this->checkDigit(); |
| } |
| |
| public function checkDigit() { |
| $mul = 3; |
| $sum = 0; |
| for ($i=strlen($this->number)-1; $i>=0; $i--) { |
| $sum += $this->number[$i] * $mul; |
| $mul = $mul == 3 ? 1 : 3; |
| } |
| return 10 - ($sum % 10); |
| } |
| |
| public function one_up() { |
| return OIDplusObject::parse($this->ns().':'.substr($this->number,0,strlen($this->number)-1)); |
| } |
| |
| private static function distance_($a, $b) { |
| $min_len = min(strlen($a), strlen($b)); |
| |
| for ($i=0; $i<$min_len; $i++) { |
| if ($a[$i] != $b[$i]) return false; |
| } |
| |
| return strlen($a) - strlen($b); |
| } |
| |
| public function distance($to) { |
| if (!is_object($to)) $to = OIDplusObject::parse($to); |
| if (!($to instanceof $this)) return false; |
| |
| // This is pretty tricky, because the whois service should accept GS1 numbers with and without checksum |
| if ($this->number == $to->number) return 0; |
| if ($this->number.$this->checkDigit() == $to->number) return 0; |
| if ($this->number == $to->number.$to->checkDigit()) return 0; |
| |
| $b = $this->number; |
| $a = $to->number; |
| $tmp = self::distance_($a, $b); |
| if ($tmp != false) return $tmp; |
| |
| $b = $this->number.$this->checkDigit(); |
| $a = $to->number; |
| $tmp = self::distance_($a, $b); |
| if ($tmp != false) return $tmp; |
| |
| $b = $this->number; |
| $a = $to->number.$to->checkDigit(); |
| $tmp = self::distance_($a, $b); |
| if ($tmp != false) return $tmp; |
| |
| return null; |
| } |
| |
| public function getDirectoryName() { |
| if ($this->isRoot()) return $this->ns(); |
| return $this->ns().'_'.$this->nodeId(false); // safe, because there are only numbers |
| } |
| } |