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2 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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5 | * Copyright 2019 Daniel Marschall, ViaThinkSoft |
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6 | * |
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7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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8 | * you may not use this file except in compliance with the License. |
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9 | * You may obtain a copy of the License at |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | */ |
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19 | |||
112 | daniel-mar | 20 | if (!defined('IN_OIDPLUS')) die(); |
21 | |||
227 | daniel-mar | 22 | class OIDplusObjectTypePluginDoi extends OIDplusObjectTypePlugin { |
2 | daniel-mar | 23 | |
222 | daniel-mar | 24 | public static function getPluginInformation() { |
25 | $out = array(); |
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26 | $out['name'] = 'Digital Object Identifier (DOI)'; |
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27 | $out['author'] = 'ViaThinkSoft'; |
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28 | $out['version'] = null; |
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29 | $out['descriptionHTML'] = null; |
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30 | return $out; |
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31 | } |
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32 | |||
227 | daniel-mar | 33 | public static function getObjectTypeClassName() { |
34 | return 'OIDplusDoi'; |
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35 | } |
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36 | |||
37 | } |
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38 | |||
39 | class OIDplusDoi extends OIDplusObject { |
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40 | private $doi; |
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41 | |||
2 | daniel-mar | 42 | public function __construct($doi) { |
16 | daniel-mar | 43 | // TODO: syntax checks |
2 | daniel-mar | 44 | $this->doi = $doi; |
45 | } |
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46 | |||
47 | public static function parse($node_id) { |
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48 | @list($namespace, $doi) = explode(':', $node_id, 2); |
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49 | if ($namespace !== 'doi') return false; |
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50 | return new self($doi); |
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51 | } |
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52 | |||
53 | public static function objectTypeTitle() { |
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54 | return "Digital Object Identifier (DOI)"; |
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55 | } |
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56 | |||
57 | public static function objectTypeTitleShort() { |
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58 | return "DOI"; |
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59 | } |
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60 | |||
61 | public static function ns() { |
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62 | return 'doi'; |
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63 | } |
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64 | |||
65 | public static function root() { |
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66 | return 'doi:'; |
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67 | } |
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68 | |||
69 | public function isRoot() { |
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70 | return $this->doi == ''; |
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71 | } |
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72 | |||
247 | daniel-mar | 73 | public function nodeId($with_ns=true) { |
74 | return $with_ns ? 'doi:'.$this->doi : $this->doi; |
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2 | daniel-mar | 75 | } |
76 | |||
77 | public function addString($str) { |
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78 | if ($this->isRoot()) { |
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79 | // Parent is root, so $str is the base DOI (10.xxxx) |
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80 | $base = $str; |
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81 | if (!self::validBaseDoi($base)) { |
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82 | throw new Exception("Invalid DOI $base . It must have syntax 10.xxxx"); |
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83 | } |
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84 | return 'doi:' . $base; |
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85 | } else if (self::validBaseDoi($this->doi)) { |
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86 | // First level: We add a pubilcation to the base |
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87 | return 'doi:' . $this->doi . '/' . $str; |
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88 | } else { |
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89 | // We just add an additional string to the already existing publication, e.g. a graphic reference or chapter |
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90 | return 'doi:' . $this->doi . $str; |
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91 | } |
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92 | } |
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93 | |||
94 | public function crudShowId(OIDplusObject $parent) { |
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95 | return $this->doi; |
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96 | } |
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97 | |||
98 | public function crudInsertPrefix() { |
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99 | return $this->isRoot() ? '' : substr($this->addString(''), strlen(self::ns())+1); |
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100 | } |
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101 | |||
102 | public function jsTreeNodeName(OIDplusObject $parent = null) { |
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103 | if ($parent == null) return $this->objectTypeTitle(); |
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104 | $out = $this->doi; |
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105 | $ary = explode('/', $out, 2); |
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106 | if (count($ary) > 1) $out = $ary[1]; |
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107 | return $out; |
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108 | } |
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109 | |||
110 | public function defaultTitle() { |
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111 | return 'DOI ' . $this->doi; |
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112 | } |
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113 | |||
16 | daniel-mar | 114 | public function isLeafNode() { |
115 | return false; |
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116 | } |
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117 | |||
34 | daniel-mar | 118 | public function getContentPage(&$title, &$content, &$icon) { |
55 | daniel-mar | 119 | $icon = file_exists(__DIR__.'/icon_big.png') ? 'plugins/objectTypes/'.basename(__DIR__).'/icon_big.png' : ''; |
120 | |||
2 | daniel-mar | 121 | if ($this->isRoot()) { |
122 | $title = OIDplusDoi::objectTypeTitle(); |
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123 | |||
150 | daniel-mar | 124 | $res = OIDplus::db()->query("select * from ".OIDPLUS_TABLENAME_PREFIX."objects where parent = ?", array(self::root())); |
236 | daniel-mar | 125 | if ($res->num_rows() > 0) { |
2 | daniel-mar | 126 | $content = 'Please select an DOI in the tree view at the left to show its contents.'; |
127 | } else { |
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128 | $content = 'Currently, no DOIs are registered in the system.'; |
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129 | } |
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130 | |||
16 | daniel-mar | 131 | if (!$this->isLeafNode()) { |
132 | if (OIDplus::authUtils()::isAdminLoggedIn()) { |
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133 | $content .= '<h2>Manage your DOIs</h2>'; |
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134 | } else { |
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135 | $content .= '<h2>Available DOIs</h2>'; |
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136 | } |
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137 | $content .= '%%CRUD%%'; |
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2 | daniel-mar | 138 | } |
139 | } else { |
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192 | daniel-mar | 140 | $title = $this->getTitle(); |
141 | |||
2 | daniel-mar | 142 | $pure = explode(':',$this->nodeId())[1]; |
143 | $content = '<h3><a target="_blank" href="https://dx.doi.org/'.htmlentities($pure).'">Resolve '.htmlentities($pure).'</a></h3>'; |
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144 | |||
11 | daniel-mar | 145 | $content .= '<h2>Description</h2>%%DESC%%'; // TODO: add more meta information about the object type |
2 | daniel-mar | 146 | |
16 | daniel-mar | 147 | if (!$this->isLeafNode()) { |
148 | if ($this->userHasWriteRights()) { |
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149 | $content .= '<h2>Create or change subsequent objects</h2>'; |
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150 | } else { |
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151 | $content .= '<h2>Subsequent objects</h2>'; |
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152 | } |
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153 | $content .= '%%CRUD%%'; |
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2 | daniel-mar | 154 | } |
155 | } |
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156 | } |
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157 | |||
158 | # --- |
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159 | |||
160 | public static function validBaseDoi($doi) { |
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161 | return preg_match('@^10\.\d{4}$@', $doi, $m); |
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162 | } |
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20 | daniel-mar | 163 | |
164 | public function one_up() { |
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38 | daniel-mar | 165 | $oid = $this->doi; |
166 | |||
167 | $p = strrpos($oid, '/'); |
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168 | if ($p === false) return $oid; |
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169 | if ($p == 0) return '/'; |
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170 | |||
171 | $oid_up = substr($oid, 0, $p); |
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172 | |||
173 | return self::parse(self::ns().':'.$oid_up); |
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20 | daniel-mar | 174 | } |
175 | |||
176 | public function distance($to) { |
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38 | daniel-mar | 177 | if (!is_object($to)) $to = OIDplusObject::parse($to); |
178 | if (!($to instanceof $this)) return false; |
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179 | |||
180 | $a = $to->doi; |
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181 | $b = $this->doi; |
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182 | |||
183 | if (substr($a,0,1) == '/') $a = substr($a,1); |
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184 | if (substr($b,0,1) == '/') $b = substr($b,1); |
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185 | |||
186 | $ary = explode('/', $a); |
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187 | $bry = explode('/', $b); |
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188 | |||
189 | $min_len = min(count($ary), count($bry)); |
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190 | |||
191 | for ($i=0; $i<$min_len; $i++) { |
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192 | if ($ary[$i] != $bry[$i]) return false; |
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193 | } |
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194 | |||
195 | return count($ary) - count($bry); |
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20 | daniel-mar | 196 | } |
2 | daniel-mar | 197 | } |