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635 | daniel-mar | 1 | <?php |
2 | |||
3 | /* |
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4 | * OIDplus 2.0 |
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5 | * Copyright 2019 - 2021 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 | |||
20 | if (!defined('INSIDE_OIDPLUS')) die(); |
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21 | |||
22 | class OIDplusDoi extends OIDplusObject { |
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23 | private $doi; |
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24 | |||
25 | public function __construct($doi) { |
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26 | // TODO: syntax checks |
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27 | $this->doi = $doi; |
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28 | } |
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29 | |||
30 | public static function parse($node_id) { |
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31 | @list($namespace, $doi) = explode(':', $node_id, 2); |
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32 | if ($namespace !== 'doi') return false; |
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33 | return new self($doi); |
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34 | } |
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35 | |||
36 | public static function objectTypeTitle() { |
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37 | return _L('Digital Object Identifier (DOI)'); |
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38 | } |
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39 | |||
40 | public static function objectTypeTitleShort() { |
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41 | return _L('DOI'); |
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42 | } |
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43 | |||
44 | public static function ns() { |
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45 | return 'doi'; |
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46 | } |
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47 | |||
48 | public static function root() { |
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49 | return 'doi:'; |
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50 | } |
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51 | |||
52 | public function isRoot() { |
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53 | return $this->doi == ''; |
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54 | } |
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55 | |||
56 | public function nodeId($with_ns=true) { |
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57 | return $with_ns ? 'doi:'.$this->doi : $this->doi; |
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58 | } |
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59 | |||
60 | public function addString($str) { |
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61 | if ($this->isRoot()) { |
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62 | // Parent is root, so $str is the base DOI (10.xxxx) |
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63 | $base = $str; |
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64 | if (!self::validBaseDoi($base)) { |
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65 | throw new OIDplusException(_L('Invalid DOI %1 . It must have syntax 10.xxxx',$base)); |
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66 | } |
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67 | return 'doi:' . $base; |
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68 | } else if (self::validBaseDoi($this->doi)) { |
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69 | // First level: We add a pubilcation to the base |
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70 | return 'doi:' . $this->doi . '/' . $str; |
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71 | } else { |
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72 | // We just add an additional string to the already existing publication, e.g. a graphic reference or chapter |
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73 | return 'doi:' . $this->doi . $str; |
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74 | } |
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75 | } |
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76 | |||
77 | public function crudShowId(OIDplusObject $parent) { |
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78 | return $this->doi; |
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79 | } |
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80 | |||
81 | public function crudInsertPrefix() { |
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82 | return $this->isRoot() ? '' : substr($this->addString(''), strlen(self::ns())+1); |
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83 | } |
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84 | |||
85 | public function jsTreeNodeName(OIDplusObject $parent = null) { |
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86 | if ($parent == null) return $this->objectTypeTitle(); |
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87 | $out = $this->doi; |
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88 | $ary = explode('/', $out, 2); |
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89 | if (count($ary) > 1) $out = $ary[1]; |
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90 | return $out; |
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91 | } |
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92 | |||
93 | public function defaultTitle() { |
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94 | return _L('DOI %1',$this->doi); |
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95 | } |
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96 | |||
97 | public function isLeafNode() { |
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98 | return false; |
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99 | } |
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100 | |||
101 | public function getContentPage(&$title, &$content, &$icon) { |
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644 | daniel-mar | 102 | $icon = file_exists(__DIR__.'/icon_big.png') ? OIDplus::webPath(__DIR__,true).'icon_big.png' : ''; |
635 | daniel-mar | 103 | |
104 | if ($this->isRoot()) { |
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105 | $title = OIDplusDoi::objectTypeTitle(); |
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106 | |||
107 | $res = OIDplus::db()->query("select * from ###objects where parent = ?", array(self::root())); |
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790 | daniel-mar | 108 | if ($res->any()) { |
635 | daniel-mar | 109 | $content = _L('Please select an DOI in the tree view at the left to show its contents.'); |
110 | } else { |
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111 | $content = _L('Currently, no DOIs are registered in the system.'); |
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112 | } |
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113 | |||
114 | if (!$this->isLeafNode()) { |
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115 | if (OIDplus::authUtils()->isAdminLoggedIn()) { |
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116 | $content .= '<h2>'._L('Manage your DOIs').'</h2>'; |
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117 | } else { |
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118 | $content .= '<h2>'._L('Available DOIs').'</h2>'; |
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119 | } |
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120 | $content .= '%%CRUD%%'; |
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121 | } |
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122 | } else { |
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123 | $title = $this->getTitle(); |
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124 | |||
125 | $pure = explode(':',$this->nodeId())[1]; |
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126 | $content = '<h3><a target="_blank" href="https://dx.doi.org/'.htmlentities($pure).'">'._L('Resolve %1',htmlentities($pure)).' </a></h3>'; |
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127 | |||
128 | $content .= '<h2>'._L('Description').'</h2>%%DESC%%'; // TODO: add more meta information about the object type |
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129 | |||
130 | if (!$this->isLeafNode()) { |
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131 | if ($this->userHasWriteRights()) { |
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132 | $content .= '<h2>'._L('Create or change subsequent objects').'</h2>'; |
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133 | } else { |
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134 | $content .= '<h2>'._L('Subsequent objects').'</h2>'; |
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135 | } |
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136 | $content .= '%%CRUD%%'; |
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137 | } |
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138 | } |
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139 | } |
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140 | |||
141 | # --- |
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142 | |||
143 | public static function validBaseDoi($doi) { |
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144 | $m = array(); |
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145 | return preg_match('@^10\.\d{4}$@', $doi, $m); |
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146 | } |
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147 | |||
148 | public function one_up() { |
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149 | $oid = $this->doi; |
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150 | |||
151 | $p = strrpos($oid, '/'); |
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713 | daniel-mar | 152 | if ($p === false) return self::parse($oid); |
153 | if ($p == 0) return self::parse('/'); |
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635 | daniel-mar | 154 | |
155 | $oid_up = substr($oid, 0, $p); |
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156 | |||
157 | return self::parse(self::ns().':'.$oid_up); |
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158 | } |
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159 | |||
160 | public function distance($to) { |
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161 | if (!is_object($to)) $to = OIDplusObject::parse($to); |
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162 | if (!($to instanceof $this)) return false; |
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163 | |||
164 | $a = $to->doi; |
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165 | $b = $this->doi; |
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166 | |||
167 | if (substr($a,0,1) == '/') $a = substr($a,1); |
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168 | if (substr($b,0,1) == '/') $b = substr($b,1); |
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169 | |||
170 | $ary = explode('/', $a); |
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171 | $bry = explode('/', $b); |
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172 | |||
173 | $min_len = min(count($ary), count($bry)); |
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174 | |||
175 | for ($i=0; $i<$min_len; $i++) { |
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176 | if ($ary[$i] != $bry[$i]) return false; |
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177 | } |
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178 | |||
179 | return count($ary) - count($bry); |
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180 | } |
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181 | |||
182 | public function getDirectoryName() { |
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183 | if ($this->isRoot()) return $this->ns(); |
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184 | return $this->ns().'_'.md5($this->nodeId(false)); |
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185 | } |
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713 | daniel-mar | 186 | } |