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
|
<?php
/**
* Elgg core search.
*
* @package Elgg
* @subpackage Core
* @author Curverider Ltd <info@elgg.com>, The MITRE Corporation <http://www.mitre.org>
* @link http://elgg.org/
*/
/**
* Initialise search helper functions.
*
*/
function search_init() {
// page handler for search actions and results
register_page_handler('search','search_page_handler');
// add in CSS for search elements
extend_view('css', 'search/css');
}
/**
* Page handler for search
*
* @param array $page Page elements from pain page handler
*/
function search_page_handler($page) {
global $CONFIG;
if(!get_input('tag')) {
set_input('tag', $page[0]);
}
include_once($CONFIG->path . "mod/search/index.php");
}
/**
* Core search hook.
* Returns an object with two parts:
* ->entities: an array of instantiated entities that have been decorated with
* volatile "search" data indicating what they matched. These are
* the entities to be displayed to the user on this page.
* ->total: total number of entities overall. This function can update this
* limit to ask for more pages in the pagination.
*/
function search_original_hook($hook, $type, $returnvalue, $params) {
global $CONFIG;
var_dump($CONFIG->hooks);
$tag = $params['tag'];
$offset = $params['offset']; // starting page
$limit = $params['limit']; // number per page
$searchtype = $params['searchtype']; // the search type we're looking for
$object_type = $params['object_type'];
$subtype = $params['subtype'];
$owner_guid = $params['owner_guid'];
$tagtype = $params['tagtype'];
$count = get_entities_from_metadata($tagtype, elgg_strtolower($tag), $object_type, $subtype, $owner_guid, $limit, $offset, "", 0, TRUE, FALSE);
$ents = get_entities_from_metadata($tagtype, elgg_strtolower($tag), $object_type, $subtype, $owner_guid, $limit, $offset, "", 0, FALSE, FALSE);
// $options = array(
// 'metadata_name_value_pair' => array('name' => $params['tagtype'], 'value' => $params['tag'], 'case_sensitive' => false),
// 'offset' => $params['offset'],
// 'limit' => $params['limit'],
// 'type' => $params['object_type'],
// 'subtype' => $params['subtype'],
// 'owner_guid' => $params['owner_guid']
// );
//
// $count = elgg_get_entities_from_metadata(array_merge($options, array('count' => TRUE)));
// $entities = elgg_get_entities_from_metadata($options);
/*
* Foreach entity
* get the metadata keys
* If the value matches, hang onto the key
* add all the matched keys to VolatileData
* This tells us *why* each entity matched
*/
foreach ($ents as $ent) {
$metadata = get_metadata_for_entity($ent->getGUID());
$matched = array();
if ($metadata) {
foreach ($metadata as $tuple) {
if ($tag === $tuple->value) {
// This is one of the matching elements
$matched[] = $tuple->name;
}
}
$ent->setVolatileData('search', $matched);
}
}
// merge in our entities with any coming in from elsewhere
$returnvalue->entities = array_merge($returnvalue->entities, $ents);
// expand the total entity count if necessary
if ($count > $returnvalue->total) {
$returnvalue->total = $count;
}
return $returnvalue;
}
/**
* Provides default search for registered entity subtypes.
* Entity types should be dealt with in the entity classes. (Objects are an exception).
*
* @param unknown_type $hook
* @param unknown_type $type
* @param unknown_type $returnvalue
* @param unknown_type $params
* @return unknown_type
*/
function search_registered_entities($hook, $type, $returnvalue, $params) {
$entity_types = get_registered_entity_types();
foreach ($entity_types as $type => $subtypes) {
if (is_array($subtypes) && count($subtypes)) {
}
}
}
/**
* return our base search types (right now, we have none)
*/
function search_base_search_types_hook($hook, $type, $returnvalue, $params) {
if (!is_array($returnvalue)) {
$returnvalue = array();
}
return $returnvalue;
}
/**
* Returns a matching string with $context amount of context, optionally
* surrounded by $before and $after.
*
* If no match is found, restricts string to $context*2 starting from strpos 0.
*
* @param str $haystack
* @param str $needle
* @param str $before
* @param str $after
* @param str $context
* @return str
*/
function search_get_relevant_substring($haystack, $needle, $before = '', $after = '', $context = 75) {
$haystack = strip_tags($haystack);
$needle = strip_tags($needle);
$pos = strpos(strtolower($haystack), strtolower($needle));
if ($pos === FALSE) {
$str = substr($haystack, 0, $context*2);
if (strlen($haystack) > $context*2) {
$str .= '...';
}
return $str;
}
$start_pos = $pos - $context;
if ($start_pos < 0) {
$start_pos = 0;
}
// get string from -context to +context
$matched = substr($haystack, $start_pos, $context*2);
// add elipses to front.
if ($start_pos > 0) {
$matched = "...$matched";
}
// add elipses to end.
if ($start_pos + $context < strlen($haystack)) {
$matched = "$matched...";
}
// surround if needed
if ($before || $after) {
$matched = str_ireplace($needle, $before . $needle . $after, $matched);
}
return $matched;
}
function search_get_listing_html($entities, $count, $params) {
if (!is_array($entities) || !$count) {
return FALSE;
}
$view_order = array();
// check if there's a special search view for this type:subtype
if (isset($params['type']) && $params['type'] && isset($params['subtype']) && $params['subtype']) {
$view_order[] = "search/{$params['type']}/{$params['subtype']}/listing";
}
// also check for the default type
if (isset($params['type']) && $params['type']) {
$view_order[] = "search/{$params['type']}/listing";
}
// check search types
if (isset($params['search_type']) && $params['search_type']) {
$view_order[] = "search/{$params['search_type']}/listing";
}
// finally default to a search listing default
$view_order[] = "search/listing";
$vars = array(
'entities' => $entities,
'count' => $count,
'params' => $params
);
foreach ($view_order as $view) {
if (elgg_view_exists($view)) {
return elgg_view($view, $vars);
}
}
return FALSE;
}
/** Register init system event **/
register_elgg_event_handler('init','system','search_init');
|
