ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
class.ilExternalMediaAnalyzer.php
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1<?php
2/*
3 +-----------------------------------------------------------------------------+
4 | ILIAS open source |
5 +-----------------------------------------------------------------------------+
6 | Copyright (c) 1998-2001 ILIAS open source, University of Cologne |
7 | |
8 | This program is free software; you can redistribute it and/or |
9 | modify it under the terms of the GNU General Public License |
10 | as published by the Free Software Foundation; either version 2 |
11 | of the License, or (at your option) any later version. |
12 | |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
21 +-----------------------------------------------------------------------------+
22*/
23
34{
38 static function isYouTube($a_location)
39 {
40 if (strpos($a_location, "youtube.com") > 0 ||
41 strpos($a_location, "youtu.be") > 0)
42 {
43 return true;
44 }
45 return false;
46 }
47
51 static function extractYouTubeParameters($a_location)
52 {
53 $par = array();
54 $pos1 = strpos($a_location, "v=");
55 $pos2 = strpos($a_location, "&", $pos1);
56 if ($pos1 > 0)
57 {
58 $len = ($pos2 > 0)
59 ? $pos2
60 : strlen($a_location);
61 $par["v"] = substr($a_location, $pos1+2, $len - ($pos1+2));
62 }
63 else if (strpos($a_location, "youtu.be") > 0)
64 {
65 //$par["v"] = substr($a_location, strrpos($a_location, "/") + 1);
66 }
67
68 return $par;
69 }
70
74 static function isFlickr($a_location)
75 {
76 if (strpos($a_location, "flickr.com") > 0)
77 {
78 return true;
79 }
80 return false;
81 }
82
86 static function extractFlickrParameters($a_location)
87 {
88 $par = array();
89 $pos1 = strpos($a_location, "flickr.com/photos/");
90 $pos2 = strpos($a_location, "/", $pos1+18);
91 if ($pos1 > 0)
92 {
93 $len = ($pos2 > 0)
94 ? $pos2
95 : $a_location;
96 $par["user_id"] = substr($a_location, $pos1+18, $len - ($pos1+18));
97 }
98
99 // tags
100 $pos1 = strpos($a_location, "/tags/");
101 $pos2 = strpos($a_location, "/", $pos1+6);
102 if ($pos1 > 0)
103 {
104 $len = ($pos2 > 0)
105 ? $pos2
106 : strlen($a_location);
107 $par["tags"] = substr($a_location, $pos1+6, $len - ($pos1+6));
108 }
109
110 // sets
111 $pos1 = strpos($a_location, "/sets/");
112 $pos2 = strpos($a_location, "/", $pos1+6);
113 if ($pos1 > 0)
114 {
115 $len = ($pos2 > 0)
116 ? $pos2
117 : $a_location;
118 $par["sets"] = substr($a_location, $pos1+6, $len - ($pos1+6));
119 }
120
121 return $par;
122 }
123
127 static function isGoogleVideo($a_location)
128 {
129 if (strpos($a_location, "video.google") > 0)
130 {
131 return true;
132 }
133 return false;
134 }
135
139 static function extractGoogleVideoParameters($a_location)
140 {
141 $par = array();
142 $pos1 = strpos($a_location, "docid=");
143 $pos2 = strpos($a_location, "&", $pos1 + 6);
144 if ($pos1 > 0)
145 {
146 $len = ($pos2 > 0)
147 ? $pos2
148 : strlen($a_location);
149 $par["docid"] = substr($a_location, $pos1+6, $len - ($pos1+6));
150 }
151
152 return $par;
153 }
154
158 static function isVimeo($a_location)
159 {
160 if (strpos($a_location, "vimeo.com") > 0)
161 {
162 return true;
163 }
164 return false;
165 }
166
170 static function extractVimeoParameters($a_location)
171 {
172 $par = array();
173 $pos1 = strpos($a_location, "vimeo.com/");
174 $pos2 = strpos($a_location, "&", $pos1 + 10);
175 if ($pos1 > 0)
176 {
177 $len = ($pos2 > 0)
178 ? $pos2
179 : strlen($a_location);
180 $par["id"] = substr($a_location, $pos1+10, $len - ($pos1+10));
181 }
182
183 return $par;
184 }
185
189 static function isGoogleDocument($a_location)
190 {
191 if (strpos($a_location, "docs.google") > 0)
192 {
193 return true;
194 }
195 return false;
196 }
197
201 static function extractGoogleDocumentParameters($a_location)
202 {
203 $par = array();
204 $pos1 = strpos($a_location, "id=");
205 $pos2 = strpos($a_location, "&", $pos1 + 3);
206 if ($pos1 > 0)
207 {
208 $len = ($pos2 > 0)
209 ? $pos2
210 : strlen($a_location);
211 $par["docid"] = substr($a_location, $pos1+3, $len - ($pos1+3));
212 }
213 $pos1 = strpos($a_location, "docID=");
214 $pos2 = strpos($a_location, "&", $pos1 + 6);
215 if ($pos1 > 0)
216 {
217 $len = ($pos2 > 0)
218 ? $pos2
219 : strlen($a_location);
220 $par["docid"] = substr($a_location, $pos1+6, $len - ($pos1+6));
221 }
222 if (strpos($a_location, "Presentation?") > 0)
223 {
224 $par["type"] = "Presentation";
225 }
226 if (strpos($a_location, "View?") > 0)
227 {
228 $par["type"] = "Document";
229 }
230
231 return $par;
232 }
233
237 static function extractUrlParameters($a_location, $a_parameter)
238 {
239 if (!is_array($a_parameter))
240 {
241 $a_parameter = array();
242 }
243
244 $ext_par = array();
245
246 // YouTube
247 if (ilExternalMediaAnalyzer::isYouTube($a_location))
248 {
250 $a_parameter = array();
251 }
252
253 // Flickr
254 if (ilExternalMediaAnalyzer::isFlickr($a_location))
255 {
257 $a_parameter = array();
258 }
259
260 // GoogleVideo
262 {
264 $a_parameter = array();
265 }
266
267 // GoogleDocs
269 {
271 $a_parameter = array();
272 }
273
274 foreach($ext_par as $name => $value)
275 {
276 $a_parameter[$name] = $value;
277 }
278
279 return $a_parameter;
280 }
281}
282?>
Analyzes external media locations and extracts important information into parameter field.
static extractUrlParameters($a_location, $a_parameter)
Extract URL information to parameter array.
static extractYouTubeParameters($a_location)
Extract YouTube Parameter.
static extractFlickrParameters($a_location)
Extract Flickr Parameter.
static isVimeo($a_location)
Identify Vimeo links.
static isGoogleDocument($a_location)
Identify Google Document links.
static extractGoogleVideoParameters($a_location)
Extract GoogleVideo Parameter.
static extractVimeoParameters($a_location)
Extract Vimeo Parameter.
static isGoogleVideo($a_location)
Identify GoogleVideo links.
static isFlickr($a_location)
Identify Flickr links.
static extractGoogleDocumentParameters($a_location)
Extract GoogleDocument Parameter.
static isYouTube($a_location)
Identify YouTube links.