/lenasys/trunk

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/lenasys/trunk

« back to all changes in this revision

Viewing changes to codeigniter/system/core/Hooks.php

  • Committer: Gustav Hatvigsson
  • Date: 2013-04-11 09:20:09 UTC
  • mfrom: (19.1.5 lenasys)
  • Revision ID: gustav.hartvigsson@gmail.com-20130411092009-ylcqzqwcmjdglb17
merged in implemetaion group one's team bransh, it contains code-ignighter
and the new admin-panel.
20130411

Show diffs side-by-side

added added

removed removed

Lines of Context:
codeigniter/system/core/Hooks.php
 
1
<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 
2
/**
 
3
 * CodeIgniter
 
4
 *
 
5
 * An open source application development framework for PHP 5.1.6 or newer
 
6
 *
 
7
 * @package             CodeIgniter
 
8
 * @author              ExpressionEngine Dev Team
 
9
 * @copyright   Copyright (c) 2008 - 2011, EllisLab, Inc.
 
10
 * @license             http://codeigniter.com/user_guide/license.html
 
11
 * @link                http://codeigniter.com
 
12
 * @since               Version 1.0
 
13
 * @filesource
 
14
 */
 
15
 
 
16
// ------------------------------------------------------------------------
 
17
 
 
18
/**
 
19
 * CodeIgniter Hooks Class
 
20
 *
 
21
 * Provides a mechanism to extend the base system without hacking.
 
22
 *
 
23
 * @package             CodeIgniter
 
24
 * @subpackage  Libraries
 
25
 * @category    Libraries
 
26
 * @author              ExpressionEngine Dev Team
 
27
 * @link                http://codeigniter.com/user_guide/libraries/encryption.html
 
28
 */
 
29
class CI_Hooks {
 
30
 
 
31
        /**
 
32
         * Determines wether hooks are enabled
 
33
         *
 
34
         * @var bool
 
35
         */
 
36
        var $enabled            = FALSE;
 
37
        /**
 
38
         * List of all hooks set in config/hooks.php
 
39
         *
 
40
         * @var array
 
41
         */
 
42
        var $hooks                      = array();
 
43
        /**
 
44
         * Determines wether hook is in progress, used to prevent infinte loops
 
45
         *
 
46
         * @var bool
 
47
         */
 
48
        var $in_progress        = FALSE;
 
49
 
 
50
        /**
 
51
         * Constructor
 
52
         *
 
53
         */
 
54
        function __construct()
 
55
        {
 
56
                $this->_initialize();
 
57
                log_message('debug', "Hooks Class Initialized");
 
58
        }
 
59
 
 
60
        // --------------------------------------------------------------------
 
61
 
 
62
        /**
 
63
         * Initialize the Hooks Preferences
 
64
         *
 
65
         * @access      private
 
66
         * @return      void
 
67
         */
 
68
        function _initialize()
 
69
        {
 
70
                $CFG =& load_class('Config', 'core');
 
71
 
 
72
                // If hooks are not enabled in the config file
 
73
                // there is nothing else to do
 
74
 
 
75
                if ($CFG->item('enable_hooks') == FALSE)
 
76
                {
 
77
                        return;
 
78
                }
 
79
 
 
80
                // Grab the "hooks" definition file.
 
81
                // If there are no hooks, we're done.
 
82
 
 
83
                if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/hooks.php'))
 
84
                {
 
85
                    include(APPPATH.'config/'.ENVIRONMENT.'/hooks.php');
 
86
                }
 
87
                elseif (is_file(APPPATH.'config/hooks.php'))
 
88
                {
 
89
                        include(APPPATH.'config/hooks.php');
 
90
                }
 
91
 
 
92
 
 
93
                if ( ! isset($hook) OR ! is_array($hook))
 
94
                {
 
95
                        return;
 
96
                }
 
97
 
 
98
                $this->hooks =& $hook;
 
99
                $this->enabled = TRUE;
 
100
        }
 
101
 
 
102
        // --------------------------------------------------------------------
 
103
 
 
104
        /**
 
105
         * Call Hook
 
106
         *
 
107
         * Calls a particular hook
 
108
         *
 
109
         * @access      private
 
110
         * @param       string  the hook name
 
111
         * @return      mixed
 
112
         */
 
113
        function _call_hook($which = '')
 
114
        {
 
115
                if ( ! $this->enabled OR ! isset($this->hooks[$which]))
 
116
                {
 
117
                        return FALSE;
 
118
                }
 
119
 
 
120
                if (isset($this->hooks[$which][0]) AND is_array($this->hooks[$which][0]))
 
121
                {
 
122
                        foreach ($this->hooks[$which] as $val)
 
123
                        {
 
124
                                $this->_run_hook($val);
 
125
                        }
 
126
                }
 
127
                else
 
128
                {
 
129
                        $this->_run_hook($this->hooks[$which]);
 
130
                }
 
131
 
 
132
                return TRUE;
 
133
        }
 
134
 
 
135
        // --------------------------------------------------------------------
 
136
 
 
137
        /**
 
138
         * Run Hook
 
139
         *
 
140
         * Runs a particular hook
 
141
         *
 
142
         * @access      private
 
143
         * @param       array   the hook details
 
144
         * @return      bool
 
145
         */
 
146
        function _run_hook($data)
 
147
        {
 
148
                if ( ! is_array($data))
 
149
                {
 
150
                        return FALSE;
 
151
                }
 
152
 
 
153
                // -----------------------------------
 
154
                // Safety - Prevents run-away loops
 
155
                // -----------------------------------
 
156
 
 
157
                // If the script being called happens to have the same
 
158
                // hook call within it a loop can happen
 
159
 
 
160
                if ($this->in_progress == TRUE)
 
161
                {
 
162
                        return;
 
163
                }
 
164
 
 
165
                // -----------------------------------
 
166
                // Set file path
 
167
                // -----------------------------------
 
168
 
 
169
                if ( ! isset($data['filepath']) OR ! isset($data['filename']))
 
170
                {
 
171
                        return FALSE;
 
172
                }
 
173
 
 
174
                $filepath = APPPATH.$data['filepath'].'/'.$data['filename'];
 
175
 
 
176
                if ( ! file_exists($filepath))
 
177
                {
 
178
                        return FALSE;
 
179
                }
 
180
 
 
181
                // -----------------------------------
 
182
                // Set class/function name
 
183
                // -----------------------------------
 
184
 
 
185
                $class          = FALSE;
 
186
                $function       = FALSE;
 
187
                $params         = '';
 
188
 
 
189
                if (isset($data['class']) AND $data['class'] != '')
 
190
                {
 
191
                        $class = $data['class'];
 
192
                }
 
193
 
 
194
                if (isset($data['function']))
 
195
                {
 
196
                        $function = $data['function'];
 
197
                }
 
198
 
 
199
                if (isset($data['params']))
 
200
                {
 
201
                        $params = $data['params'];
 
202
                }
 
203
 
 
204
                if ($class === FALSE AND $function === FALSE)
 
205
                {
 
206
                        return FALSE;
 
207
                }
 
208
 
 
209
                // -----------------------------------
 
210
                // Set the in_progress flag
 
211
                // -----------------------------------
 
212
 
 
213
                $this->in_progress = TRUE;
 
214
 
 
215
                // -----------------------------------
 
216
                // Call the requested class and/or function
 
217
                // -----------------------------------
 
218
 
 
219
                if ($class !== FALSE)
 
220
                {
 
221
                        if ( ! class_exists($class))
 
222
                        {
 
223
                                require($filepath);
 
224
                        }
 
225
 
 
226
                        $HOOK = new $class;
 
227
                        $HOOK->$function($params);
 
228
                }
 
229
                else
 
230
                {
 
231
                        if ( ! function_exists($function))
 
232
                        {
 
233
                                require($filepath);
 
234
                        }
 
235
 
 
236
                        $function($params);
 
237
                }
 
238
 
 
239
                $this->in_progress = FALSE;
 
240
                return TRUE;
 
241
        }
 
242
 
 
243
}
 
244
 
 
245
// END CI_Hooks class
 
246
 
 
247
/* End of file Hooks.php */
 
248
/* Location: ./system/core/Hooks.php */
 
 
b'\\ No newline at end of file'