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[friendica.git] / include / bb2diaspora.php
1 <?php
2
3 require_once("include/oembed.php");
4 require_once('include/event.php');
5
6 require_once('library/markdown.php');
7 require_once('include/html2bbcode.php');
8
9 // we don't want to support a bbcode specific markdown interpreter
10 // and the markdown library we have is pretty good, but provides HTML output.
11 // So we'll use that to convert to HTML, then convert the HTML back to bbcode, 
12 // and then clean up a few Diaspora specific constructs.
13
14 function diaspora2bb($s) {
15
16         $s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
17
18         $s = preg_replace('/\@\{(.+?)\; (.+?)\@(.+?)\}/','@[url=https://$3/u/$2]$1[/url]',$s);
19         $s = Markdown($s);
20         $s = html2bbcode($s);
21 //      $s = str_replace('&#42;','*',$s);
22     $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[youtube]$2[/youtube]',$s); 
23     $s = preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[youtube]$1[/youtube]',$s); 
24         $s = preg_replace("/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[vimeo]$2[/vimeo]',$s); 
25         $s = preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[vimeo]$1[/vimeo]',$s); 
26         $s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url]$2$3$4[/url]',$s);
27         // remove duplicate adjacent code tags
28         $s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
29         $s = scale_diaspora_images($s);
30         return $s;
31 }
32
33
34 function scale_diaspora_images($s,$include_link = true) {
35
36         $matches = null;
37         $c = preg_match_all('/\[img\](.*?)\[\/img\]/ism',$s,$matches,PREG_SET_ORDER);
38         if($c) {
39                 require_once('include/Photo.php');
40                 foreach($matches as $mtch) {
41                         logger('scale_diaspora_image: ' . $mtch[1]);
42                         $i = fetch_url($mtch[1]);
43                         if($i) {
44                                 $ph = new Photo($i);
45                                 if($ph->is_valid()) {
46                                         if($ph->getWidth() > 600 || $ph->getHeight() > 600) {
47                                                 $ph->scaleImage(600);
48                                                 $new_width = $ph->getWidth();
49                                                 $new_height = $ph->getHeight();
50                                                 logger('scale_diaspora_image: ' . $new_width . 'w ' . $new_height . 'h' . 'match: ' . $mtch[0], LOGGER_DEBUG);
51                                                 $s = str_replace($mtch[0],'[img=' . $new_width . 'x' . $new_height. ']' . $mtch[1] . '[/img]'
52                                                         . "\n" . (($include_link) 
53                                                                 ? '[url=' . $mtch[1] . ']' . t('view full size') . '[/url]' . "\n"
54                                                                 : ''),$s);
55                                                 logger('scale_diaspora_image: new string: ' . $s, LOGGER_DEBUG);
56                                         }
57                                 }
58                         }
59                 }
60         }
61         return $s;
62 }
63
64 function stripdcode_br_cb($s) {
65         return '[code]' . str_replace('<br />', "\n\t", $s[1]) . '[/code]';
66 }
67
68
69
70 function bb2diaspora($Text,$preserve_nl = false) {
71
72         $ev = bbtoevent($Text);
73
74         // Replace any html brackets with HTML Entities to prevent executing HTML or script
75         // Don't use strip_tags here because it breaks [url] search by replacing & with amp
76
77         $Text = str_replace("<", "&lt;", $Text);
78         $Text = str_replace(">", "&gt;", $Text);
79
80         // If we find any event code, turn it into an event.
81         // After we're finished processing the bbcode we'll 
82         // replace all of the event code with a reformatted version.
83
84
85         if($preserve_nl)
86                 $Text = str_replace(array("\n","\r"), array('',''),$Text);
87
88         // Set up the parameters for a URL search string
89         $URLSearchString = "^\[\]";
90         // Set up the parameters for a MAIL search string
91         $MAILSearchString = $URLSearchString;
92
93         // Perform URL Search
94
95         // [img]pathtoimage[/img]
96
97         $Text = preg_replace("/\[bookmark\]([$URLSearchString]*)\[\/bookmark\]/ism", '[$1]($1)', $Text);
98         $Text = preg_replace("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", '[$2]($1)', $Text);
99
100         $Text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '[$1]($1)', $Text);
101         $Text = preg_replace("/\#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[#$2]($1)', $Text);
102         $Text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[$2]($1)', $Text);
103
104         $Text = preg_replace("/\[img\](.*?)\[\/img\]/", '![' . t('image/photo') . '](' . '$1' . ')', $Text);
105
106         // Perform MAIL Search
107         $Text = preg_replace("(\[mail\]([$MAILSearchString]*)\[/mail\])", '[$1](mailto:$1)', $Text);
108         $Text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '[$2](mailto:$1)', $Text);
109          
110         $Text = str_replace('*', '\\*', $Text);
111         $Text = str_replace('_', '\\_', $Text);
112
113         $Text = str_replace('`','\\`', $Text);
114
115         // Check for bold text
116         $Text = preg_replace("(\[b\](.*?)\[\/b\])is",'**$1**',$Text);
117
118         // Check for Italics text
119         $Text = preg_replace("(\[i\](.*?)\[\/i\])is",'_$1_',$Text);
120
121         // Check for Underline text
122 //      $Text = preg_replace("(\[u\](.*?)\[\/u\])is",'<u>$1</u>',$Text);
123
124         // Check for strike-through text
125 //      $Text = preg_replace("(\[s\](.*?)\[\/s\])is",'<strike>$1</strike>',$Text);
126
127         // Check for over-line text
128 //      $Text = preg_replace("(\[o\](.*?)\[\/o\])is",'<span class="overline">$1</span>',$Text);
129
130         // Check for colored text
131 //      $Text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])is","<span style=\"color: $1;\">$2</span>",$Text);
132
133         // Check for sized text
134 //      $Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","<span style=\"font-size: $1;\">$2</span>",$Text);
135
136         // Check for list text
137 //      $Text = preg_replace("/\[list\](.*?)\[\/list\]/is", '<ul class="listbullet">$1</ul>' ,$Text);
138 //      $Text = preg_replace("/\[list=1\](.*?)\[\/list\]/is", '<ul class="listdecimal">$1</ul>' ,$Text);
139 //      $Text = preg_replace("/\[list=i\](.*?)\[\/list\]/s",'<ul class="listlowerroman">$1</ul>' ,$Text);
140 //      $Text = preg_replace("/\[list=I\](.*?)\[\/list\]/s", '<ul class="listupperroman">$1</ul>' ,$Text);
141 //      $Text = preg_replace("/\[list=a\](.*?)\[\/list\]/s", '<ul class="listloweralpha">$1</ul>' ,$Text);
142 //      $Text = preg_replace("/\[list=A\](.*?)\[\/list\]/s", '<ul class="listupperalpha">$1</ul>' ,$Text);
143 //      $Text = preg_replace("/\[li\](.*?)\[\/li\]/s", '<li>$1</li>' ,$Text);
144
145 //      $Text = preg_replace("/\[td\](.*?)\[\/td\]/s", '<td>$1</td>' ,$Text);
146 //      $Text = preg_replace("/\[tr\](.*?)\[\/tr\]/s", '<tr>$1</tr>' ,$Text);
147 //      $Text = preg_replace("/\[table\](.*?)\[\/table\]/s", '<table>$1</table>' ,$Text);
148
149 //      $Text = preg_replace("/\[table border=1\](.*?)\[\/table\]/s", '<table border="1" >$1</table>' ,$Text);
150 //      $Text = preg_replace("/\[table border=0\](.*?)\[\/table\]/s", '<table border="0" >$1</table>' ,$Text);
151
152         
153 //      $Text = str_replace("[*]", "<li>", $Text);
154
155         // Check for font change text
156 //      $Text = preg_replace("(\[font=(.*?)\](.*?)\[\/font\])","<span style=\"font-family: $1;\">$2</span>",$Text);
157
158
159     $Text = preg_replace_callback("/\[code\](.*?)\[\/code\]/is",'stripdcode_br_cb',$Text);
160
161         // Check for [code] text
162         $Text = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/is","\t$2\n", $Text);
163
164
165
166
167         // Declare the format for [quote] layout
168         //      $QuoteLayout = '<blockquote>$1</blockquote>';                     
169         // Check for [quote] text
170         $Text = preg_replace("/\[quote\](.*?)\[\/quote\]/is",">$1\n\n", $Text);
171          
172         // Images
173
174         // html5 video and audio
175
176 //      $Text = preg_replace("/\[video\](.*?)\[\/video\]/", '<video src="$1" controls="controls" width="425" height="350"><a href="$1">$1</a></video>', $Text);
177
178 //      $Text = preg_replace("/\[audio\](.*?)\[\/audio\]/", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $Text);
179
180 //      $Text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/", '<iframe src="$1" width="425" height="350"><a href="$1">$1</a></iframe>', $Text);
181          
182         // [img=widthxheight]image source[/img]
183 //      $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/", '<img src="$3" style="height:{$2}px; width:{$1}px;" >', $Text);
184
185     $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text); 
186     $Text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text); 
187     $Text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism",'http://www.youtube.com/watch?v=$1',$Text); 
188         $Text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", 'http://www.youtube.com/watch?v=$1', $Text);
189
190         $Text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text); 
191         $Text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism",'http://vimeo.com/$1',$Text); 
192         $Text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", 'http://vimeo.com/$1',$Text);
193
194
195
196
197         // oembed tag
198         //      $Text = oembed_bbcode2html($Text);
199
200         // If we found an event earlier, strip out all the event code and replace with a reformatted version.
201
202         if(x($ev,'desc') && x($ev,'start')) {
203
204                 $sub = format_event_diaspora($ev);
205         
206                 $Text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/is",$sub,$Text);
207                 $Text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/is",'',$Text);
208                 $Text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/is",'',$Text);
209                 $Text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/is",'',$Text);
210                 $Text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/is",'',$Text);
211         }
212
213         $Text = preg_replace("/\<(.*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism",'<$1$2=$3&$4>',$Text);
214
215         $Text = preg_replace('/\[(.*?)\]\((.*?)\\\\_(.*?)\)/ism','[$1]($2_$3)',$Text);
216         
217         call_hooks('bb2diaspora',$Text);
218
219         return $Text;
220 }
221
222 function format_event_diaspora($ev) {
223
224         $a = get_app();
225
226         if(! ((is_array($ev)) && count($ev)))
227                 return '';
228
229         $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
230
231         $o = 'Friendika event notification:' . "\n";
232
233         $o .= '**' . bb2diaspora($ev['desc']) .  '**' . "\n";
234
235         $o .= t('Starts:') . ' ' . '['
236                 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC', 
237                         $ev['start'] , $bd_format ))
238                         :  day_translate(datetime_convert('UTC', 'UTC', 
239                         $ev['start'] , $bd_format)))
240                 .  '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
241
242         if(! $ev['nofinish'])
243                 $o .= t('Finishes:') . ' ' . '[' 
244                         . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC', 
245                                 $ev['finish'] , $bd_format ))
246                                 :  day_translate(datetime_convert('UTC', 'UTC', 
247                                 $ev['finish'] , $bd_format )))
248                         . '](' . $a->get_baseurl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
249
250         if(strlen($ev['location']))
251                 $o .= t('Location:') . bb2diaspora($ev['location']) 
252                         . "\n";
253
254         $o .= "\n";
255         return $o;
256 }