1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
<?php
/**
* Output functions
* Processing text for output, formatting HTML,
*
* @package Elgg
* @subpackage Core
* @author Curverider Ltd <info@elgg.com>
* @link http://elgg.org/
*/
/**
* Takes a string and turns any URLs into formatted links
*
* @param string $text The input string
* @return string The output stirng with formatted links
**/
function parse_urls($text) {
// @todo this causes problems with <attr = "val">
// must be ing <attr="val"> format (no space).
// By default htmlawed rewrites tags to this format.
// if PHP supported conditional negative lookbehinds we could use this:
// $r = preg_replace_callback('/(?<!=)(?<![ ])?(?<!["\'])((ht|f)tps?:\/\/[^\s\r\n\t<>"\'\!\(\),]+)/i',
//
// we can put , in the list of excluded char but need to keep . because of domain names.
// it is removed in the callback.
$r = preg_replace_callback('/(?<!=)(?<!["\'])((ht|f)tps?:\/\/[^\s\r\n\t<>"\'\!\(\),]+)/i',
create_function(
'$matches',
'
$url = $matches[1];
$period = \'\';
if (substr($url, -1, 1) == \'.\') {
$period = \'.\';
$url = trim($url, \'.\');
}
$urltext = str_replace("/", "/<wbr />", $url);
return "<a href=\"$url\" style=\"text-decoration:underline;\">$urltext</a>$period";
'
), $text);
return $r;
}
/**
* Create paragraphs from text with line spacing
* Borrowed from Wordpress.
*
**/
function autop($pee, $br = 1) {
$pee = $pee . "\n"; // just to make things a little easier, pad the end
$pee = preg_replace('|<br />\s*<br />|', "\n\n", $pee);
// Space things out a little
$allblocks = '(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|map|area|blockquote|address|math|style|input|p|h[1-6]|hr)';
$pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee);
$pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee);
$pee = str_replace(array("\r\n", "\r"), "\n", $pee); // cross-platform newlines
if ( strpos($pee, '<object') !== false ) {
$pee = preg_replace('|\s*<param([^>]*)>\s*|', "<param$1>", $pee); // no pee inside object/embed
$pee = preg_replace('|\s*</embed>\s*|', '</embed>', $pee);
}
$pee = preg_replace("/\n\n+/", "\n\n", $pee); // take care of duplicates
$pee = preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s', "<p>$1</p>\n", $pee); // make paragraphs, including one at the end
$pee = preg_replace('|<p>\s*?</p>|', '', $pee); // under certain strange conditions it could create a P of entirely whitespace
$pee = preg_replace('!<p>([^<]+)\s*?(</(?:div|address|form)[^>]*>)!', "<p>$1</p>$2", $pee);
$pee = preg_replace( '|<p>|', "$1<p>", $pee );
$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee); // don't pee all over a tag
$pee = preg_replace("|<p>(<li.+?)</p>|", "$1", $pee); // problem with nested lists
$pee = preg_replace('|<p><blockquote([^>]*)>|i', "<blockquote$1><p>", $pee);
$pee = str_replace('</blockquote></p>', '</p></blockquote>', $pee);
$pee = preg_replace('!<p>\s*(</?' . $allblocks . '[^>]*>)!', "$1", $pee);
$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*</p>!', "$1", $pee);
if ($br) {
$pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', create_function('$matches', 'return str_replace("\n", "<WPPreserveNewline />", $matches[0]);'), $pee);
$pee = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $pee); // optionally make line breaks
$pee = str_replace('<WPPreserveNewline />', "\n", $pee);
}
$pee = preg_replace('!(</?' . $allblocks . '[^>]*>)\s*<br />!', "$1", $pee);
$pee = preg_replace('!<br />(\s*</?(?:p|li|div|dl|dd|dt|th|pre|td|ul|ol)[^>]*>)!', '$1', $pee);
// if (strpos($pee, '<pre') !== false) {
// mind the space between the ? and >. Only there because of the comment.
// $pee = preg_replace_callback('!(<pre.*? >)(.*?)</pre>!is', 'clean_pre', $pee );
// }
$pee = preg_replace( "|\n</p>$|", '</p>', $pee );
return $pee;
}
/**
* Returns an excerpt.
* Will return up to n chars stopping at the nearest space.
* If no spaces are found (like in Japanese) will crop off at the
* n char mark. Adds ... if any text was chopped.
*
* @param string $text
* @param int $num_chars Return a string up to $num_chars long
* @return string
* @since 1.7.2
*/
function elgg_get_excerpt($text, $num_chars = 250) {
$text = trim(elgg_strip_tags($text));
$string_length = elgg_strlen($text);
if ($string_length <= $num_chars) {
return $text;
}
// handle cases
$excerpt = elgg_substr($text, 0, $num_chars);
$space = elgg_strrpos($excerpt, ' ', 0);
// don't crop if can't find a space.
if ($space === FALSE) {
$space = $num_chars;
}
$excerpt = trim(elgg_substr($excerpt, 0, $space));
if ($string_length != elgg_strlen($excerpt)) {
$excerpt .= '...';
}
return $excerpt;
}
/**
* Handles formatting of ampersands in urls
*
* @param string $url
* @return string
* @since 1.7.1
*/
function elgg_format_url($url) {
return preg_replace('/&(?!amp;)/', '&', $url);
}
/**
* When given a title, returns a version suitable for inclusion in a URL
*
* @param string $title The title
* @return string The optimised title
* @deprecated 1.8
*/
function friendly_title($title) {
elgg_deprecated_notice('friendly_title was deprecated by elgg_get_friendly_title', 1.8);
return elgg_get_friendly_title($title);
}
/**
* When given a title, returns a version suitable for inclusion in a URL
*
* @param string $title The title
* @return string The optimised title
* @since 1.7.2
*/
function elgg_get_friendly_title($title) {
// return a URL friendly title to short circuit normal title formatting
$params = array('title' => $title);
$result = trigger_plugin_hook('format', 'friendly:title', $params, NULL);
if ($result) {
return $result;
}
//$title = iconv('UTF-8', 'ASCII//TRANSLIT', $title);
$title = preg_replace("/[^\w ]/","",$title);
$title = str_replace(" ","-",$title);
$title = str_replace("--","-",$title);
$title = trim($title);
$title = strtolower($title);
return $title;
}
/**
* Displays a UNIX timestamp in a friendly way (eg "less than a minute ago")
*
* @param int $time A UNIX epoch timestamp
* @return string The friendly time
* @deprecated 1.8
*/
function friendly_time($time) {
elgg_deprecated_notice('friendly_time was deprecated by elgg_view_friendly_time', 1.8);
return elgg_view_friendly_time($time);
}
/**
* Formats a UNIX timestamp in a friendly way (eg "less than a minute ago")
*
* @param int $time A UNIX epoch timestamp
* @return string The friendly time string
* @since 1.7.2
*/
function elgg_get_friendly_time($time) {
// return a time string to short circuit normal time formatting
$params = array('time' => $time);
$result = trigger_plugin_hook('format', 'friendly:time', $params, NULL);
if ($result) {
return $result;
}
$diff = time() - (int)$time;
$minute = 60;
$hour = $minute * 60;
$day = $hour * 24;
if ($diff < $minute) {
return elgg_echo("friendlytime:justnow");
} else if ($diff < $hour) {
$diff = round($diff / $minute);
if ($diff == 0) {
$diff = 1;
}
if ($diff > 1) {
return sprintf(elgg_echo("friendlytime:minutes"), $diff);
} else {
return sprintf(elgg_echo("friendlytime:minutes:singular"), $diff);
}
} else if ($diff < $day) {
$diff = round($diff / $hour);
if ($diff == 0) {
$diff = 1;
}
if ($diff > 1) {
return sprintf(elgg_echo("friendlytime:hours"), $diff);
} else {
return sprintf(elgg_echo("friendlytime:hours:singular"), $diff);
}
} else {
$diff = round($diff / $day);
if ($diff == 0) {
$diff = 1;
}
if ($diff > 1) {
return sprintf(elgg_echo("friendlytime:days"), $diff);
} else {
return sprintf(elgg_echo("friendlytime:days:singular"), $diff);
}
}
}
/**
* Displays a UNIX timestamp in a friendly way
*
* @param int $time A UNIX epoch timestamp
* @return string The friendly time HTML
* @since 1.7.2
*/
function elgg_view_friendly_time($time) {
return elgg_view('output/friendlytime', array('time' => $time));
}
/**
* Strip tags and offer plugins the chance.
* Plugins register for output:strip_tags plugin hook.
* Original string included in $params['original_string']
*
* @param string $string Formatted string
* @return string String run through strip_tags() and any plugin hooks.
*/
function elgg_strip_tags($string) {
$params['original_string'] = $string;
$string = strip_tags($string);
$string = trigger_plugin_hook('format', 'strip_tags', $params, $string);
return $string;
}
|
