<?php
/*
* OIDplus 2.0
* Copyright 2019 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.
*/
class OIDplusObjectTypePluginDoi extends OIDplusObjectTypePlugin {
public static function getPluginInformation() {
$out['name'] = 'Digital Object Identifier (DOI)';
$out['author'] = 'ViaThinkSoft';
$out['version'] = null;
$out['descriptionHTML'] = null;
return $out;
}
public static function getObjectTypeClassName() {
return 'OIDplusDoi';
}
}
class OIDplusDoi extends OIDplusObject {
private $doi;
public function __construct($doi) {
// TODO: syntax checks
$this->doi = $doi;
}
public static function parse($node_id) {
if ($namespace !== 'doi') return false;
return new self($doi);
}
public static function objectTypeTitle() {
return "Digital Object Identifier (DOI)";
}
public static function objectTypeTitleShort() {
return "DOI";
}
public static function ns() {
return 'doi';
}
public static function root() {
return 'doi:';
}
public function isRoot() {
return $this->doi == '';
}
public function nodeId() {
return 'doi:'.$this->doi;
}
public function addString($str) {
if ($this->isRoot()) {
// Parent is root, so $str is the base DOI (10.xxxx)
$base = $str;
if (!self::validBaseDoi($base)) {
throw new Exception("Invalid DOI $base . It must have syntax 10.xxxx");
}
return 'doi:' . $base;
} else if (self::validBaseDoi($this->doi)) {
// First level: We add a pubilcation to the base
return 'doi:' . $this->doi . '/' . $str;
} else {
// We just add an additional string to the already existing publication, e.g. a graphic reference or chapter
return 'doi:' . $this->doi . $str;
}
}
public function crudShowId(OIDplusObject $parent) {
return $this->doi;
}
public function crudInsertPrefix() {
return $this->isRoot() ?
'' : substr($this->addString(''), strlen(self::ns())+1); }
public function jsTreeNodeName(OIDplusObject $parent = null) {
if ($parent == null) return $this->objectTypeTitle();
$out = $this->doi;
if (count($ary) > 1) $out = $ary[1]; return $out;
}
public function defaultTitle() {
return 'DOI ' . $this->doi;
}
public function isLeafNode() {
return false;
}
public function getContentPage(&$title, &$content, &$icon) {
$icon = file_exists(__DIR__
.'/icon_big.png') ?
'plugins/objectTypes/'.basename(__DIR__
).'/icon_big.png' : '';
if ($this->isRoot()) {
$title = OIDplusDoi::objectTypeTitle();
$res = OIDplus
::db()->query("select * from ".OIDPLUS_TABLENAME_PREFIX
."objects where parent = ?", array(self::root())); if (OIDplus::db()->num_rows($res) > 0) {
$content = 'Please select an DOI in the tree view at the left to show its contents.';
} else {
$content = 'Currently, no DOIs are registered in the system.';
}
if (!$this->isLeafNode()) {
if (OIDplus::authUtils()::isAdminLoggedIn()) {
$content .= '<h2>Manage your DOIs</h2>';
} else {
$content .= '<h2>Available DOIs</h2>';
}
$content .= '%%CRUD%%';
}
} else {
$title = $this->getTitle();
$pure = explode(':',$this->nodeId())[1]; $content = '<h3><a target="_blank" href="https://dx.doi.org/'.htmlentities($pure).'">Resolve '.htmlentities($pure).'</a></h3>';
$content .= '<h2>Description</h2>%%DESC%%'; // TODO: add more meta information about the object type
if (!$this->isLeafNode()) {
if ($this->userHasWriteRights()) {
$content .= '<h2>Create or change subsequent objects</h2>';
} else {
$content .= '<h2>Subsequent objects</h2>';
}
$content .= '%%CRUD%%';
}
}
}
# ---
public static function validBaseDoi($doi) {
}
public function one_up() {
$oid = $this->doi;
if ($p === false) return $oid;
if ($p == 0) return '/';
$oid_up = substr($oid, 0, $p);
return self::parse(self::ns().':'.$oid_up);
}
public function distance($to) {
if (!is_object($to)) $to = OIDplusObject
::parse($to); if (!($to instanceof $this)) return false;
$a = $to->doi;
$b = $this->doi;
for ($i=0; $i<$min_len; $i++) {
if ($ary[$i] != $bry[$i]) return false;
}
}
}