source: trunk/workflow/inc/smarty/Config_File.class.php @ 7655

Revision 7655, 12.4 KB checked in by douglasz, 11 years ago (diff)

Ticket #3236 - Melhorias de performance no codigo do Expresso.
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1<?php
2
3/**
4 * Config_File class.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19 *
20 * @link http://smarty.php.net/
21 * @version 2.6.19
22 * @copyright Copyright: 2001-2005 New Digital Group, Inc.
23 * @author Andrei Zmievski <andrei@php.net>
24 * @access public
25 * @package Smarty
26 */
27
28/* $Id: Config_File.class.php 760 2008-04-03 19:15:17Z drovetto $ */
29
30/**
31 * Config file reading class
32 * @package Smarty
33 */
34class Config_File {
35    /**#@+
36     * Options
37     * @var boolean
38     */
39    /**
40     * Controls whether variables with the same name overwrite each other.
41     */
42    var $overwrite        =    true;
43
44    /**
45     * Controls whether config values of on/true/yes and off/false/no get
46     * converted to boolean values automatically.
47     */
48    var $booleanize        =    true;
49
50    /**
51     * Controls whether hidden config sections/vars are read from the file.
52     */
53    var $read_hidden     =    true;
54
55    /**
56     * Controls whether or not to fix mac or dos formatted newlines.
57     * If set to true, \r or \r\n will be changed to \n.
58     */
59    var $fix_newlines =    true;
60    /**#@-*/
61
62    /** @access private */
63    var $_config_path    = "";
64    var $_config_data    = array();
65    /**#@-*/
66
67    /**
68     * Constructs a new config file class.
69     *
70     * @param string $config_path (optional) path to the config files
71     */
72    function Config_File($config_path = NULL)
73    {
74        if (isset($config_path))
75            $this->set_path($config_path);
76    }
77
78
79    /**
80     * Set the path where configuration files can be found.
81     *
82     * @param string $config_path path to the config files
83     */
84    function set_path($config_path)
85    {
86        if (!empty($config_path)) {
87            if (!is_string($config_path) || !file_exists($config_path) || !is_dir($config_path)) {
88                $this->_trigger_error_msg("Bad config file path '$config_path'");
89                return;
90            }
91            if(substr($config_path, -1) != DIRECTORY_SEPARATOR) {
92                $config_path .= DIRECTORY_SEPARATOR;
93            }
94
95            $this->_config_path = $config_path;
96        }
97    }
98
99
100    /**
101     * Retrieves config info based on the file, section, and variable name.
102     *
103     * @param string $file_name config file to get info for
104     * @param string $section_name (optional) section to get info for
105     * @param string $var_name (optional) variable to get info for
106     * @return string|array a value or array of values
107     */
108    function get($file_name, $section_name = NULL, $var_name = NULL)
109    {
110        if (empty($file_name)) {
111            $this->_trigger_error_msg('Empty config file name');
112            return;
113        } else {
114            $file_name = $this->_config_path . $file_name;
115            if (!isset($this->_config_data[$file_name]))
116                $this->load_file($file_name, false);
117        }
118
119        if (!empty($var_name)) {
120            if (empty($section_name)) {
121                return $this->_config_data[$file_name]["vars"][$var_name];
122            } else {
123                if(isset($this->_config_data[$file_name]["sections"][$section_name]["vars"][$var_name]))
124                    return $this->_config_data[$file_name]["sections"][$section_name]["vars"][$var_name];
125                else
126                    return array();
127            }
128        } else {
129            if (empty($section_name)) {
130                return (array)$this->_config_data[$file_name]["vars"];
131            } else {
132                if(isset($this->_config_data[$file_name]["sections"][$section_name]["vars"]))
133                    return (array)$this->_config_data[$file_name]["sections"][$section_name]["vars"];
134                else
135                    return array();
136            }
137        }
138    }
139
140
141    /**
142     * Retrieves config info based on the key.
143     *
144     * @param $file_name string config key (filename/section/var)
145     * @return string|array same as get()
146     * @uses get() retrieves information from config file and returns it
147     */
148    function &get_key($config_key)
149    {
150        list($file_name, $section_name, $var_name) = explode('/', $config_key, 3);
151        $result = &$this->get($file_name, $section_name, $var_name);
152        return $result;
153    }
154
155    /**
156     * Get all loaded config file names.
157     *
158     * @return array an array of loaded config file names
159     */
160    function get_file_names()
161    {
162        return array_keys($this->_config_data);
163    }
164
165
166    /**
167     * Get all section names from a loaded file.
168     *
169     * @param string $file_name config file to get section names from
170     * @return array an array of section names from the specified file
171     */
172    function get_section_names($file_name)
173    {
174        $file_name = $this->_config_path . $file_name;
175        if (!isset($this->_config_data[$file_name])) {
176            $this->_trigger_error_msg("Unknown config file '$file_name'");
177            return;
178        }
179
180        return array_keys($this->_config_data[$file_name]["sections"]);
181    }
182
183
184    /**
185     * Get all global or section variable names.
186     *
187     * @param string $file_name config file to get info for
188     * @param string $section_name (optional) section to get info for
189     * @return array an array of variables names from the specified file/section
190     */
191    function get_var_names($file_name, $section = NULL)
192    {
193        if (empty($file_name)) {
194            $this->_trigger_error_msg('Empty config file name');
195            return;
196        } else if (!isset($this->_config_data[$file_name])) {
197            $this->_trigger_error_msg("Unknown config file '$file_name'");
198            return;
199        }
200
201        if (empty($section))
202            return array_keys($this->_config_data[$file_name]["vars"]);
203        else
204            return array_keys($this->_config_data[$file_name]["sections"][$section]["vars"]);
205    }
206
207
208    /**
209     * Clear loaded config data for a certain file or all files.
210     *
211     * @param string $file_name file to clear config data for
212     */
213    function clear($file_name = NULL)
214    {
215        if ($file_name === NULL)
216            $this->_config_data = array();
217        else if (isset($this->_config_data[$file_name]))
218            $this->_config_data[$file_name] = array();
219    }
220
221
222    /**
223     * Load a configuration file manually.
224     *
225     * @param string $file_name file name to load
226     * @param boolean $prepend_path whether current config path should be
227     *                              prepended to the filename
228     */
229    function load_file($file_name, $prepend_path = true)
230    {
231        if ($prepend_path && $this->_config_path != "")
232            $config_file = $this->_config_path . $file_name;
233        else
234            $config_file = $file_name;
235
236        ini_set('track_errors', true);
237        $fp = @fopen($config_file, "r");
238        if (!is_resource($fp)) {
239            $this->_trigger_error_msg("Could not open config file '$config_file'");
240            return false;
241        }
242
243        $contents = ($size = filesize($config_file)) ? fread($fp, $size) : '';
244        fclose($fp);
245
246        $this->_config_data[$config_file] = $this->parse_contents($contents);
247        return true;
248    }
249
250    /**
251     * Store the contents of a file manually.
252     *
253     * @param string $config_file file name of the related contents
254     * @param string $contents the file-contents to parse
255     */
256    function set_file_contents($config_file, $contents)
257    {
258        $this->_config_data[$config_file] = $this->parse_contents($contents);
259        return true;
260    }
261
262    /**
263     * parse the source of a configuration file manually.
264     *
265     * @param string $contents the file-contents to parse
266     */
267    function parse_contents($contents)
268    {
269        if($this->fix_newlines) {
270            // fix mac/dos formatted newlines
271            $contents = preg_replace('!\r\n?!', "\n", $contents);
272        }
273
274        $config_data = array();
275        $config_data['sections'] = array();
276        $config_data['vars'] = array();
277
278        /* reference to fill with data */
279        $vars =& $config_data['vars'];
280
281        /* parse file line by line */
282        preg_match_all('!^.*\r?\n?!m', $contents, $match);
283        $lines = $match[0];
284        for ($i=0, $count=count($lines); $i<$count; ++$i) {
285            $line = $lines[$i];
286            if (empty($line)) continue;
287
288            if ( substr($line, 0, 1) == '[' && preg_match('!^\[(.*?)\]!', $line, $match) ) {
289                /* section found */
290                if (substr($match[1], 0, 1) == '.') {
291                    /* hidden section */
292                    if ($this->read_hidden) {
293                        $section_name = substr($match[1], 1);
294                    } else {
295                        /* break reference to $vars to ignore hidden section */
296                        unset($vars);
297                        $vars = array();
298                        continue;
299                    }
300                } else {                   
301                    $section_name = $match[1];
302                }
303                if (!isset($config_data['sections'][$section_name]))
304                    $config_data['sections'][$section_name] = array('vars' => array());
305                $vars =& $config_data['sections'][$section_name]['vars'];
306                continue;
307            }
308
309            if (preg_match('/^\s*(\.?\w+)\s*=\s*(.*)/s', $line, $match)) {
310                /* variable found */
311                $var_name = rtrim($match[1]);
312                if (strpos($match[2], '"""') === 0) {
313                    /* handle multiline-value */
314                    $lines[$i] = substr($match[2], 3);
315                    $var_value = '';
316                    while ($i<$count) {
317                        if (($pos = strpos($lines[$i], '"""')) === false) {
318                            $var_value .= $lines[$i++];
319                        } else {
320                            /* end of multiline-value */
321                            $var_value .= substr($lines[$i], 0, $pos);
322                            break;
323                        }
324                    }
325                    $booleanize = false;
326
327                } else {
328                    /* handle simple value */
329                    $var_value = preg_replace('/^([\'"])(.*)\1$/', '\2', rtrim($match[2]));
330                    $booleanize = $this->booleanize;
331
332                }
333                $this->_set_config_var($vars, $var_name, $var_value, $booleanize);
334            }
335            /* else unparsable line / means it is a comment / means ignore it */
336        }
337        return $config_data;
338    }
339
340    /**#@+ @access private */
341    /**
342     * @param array &$container
343     * @param string $var_name
344     * @param mixed $var_value
345     * @param boolean $booleanize determines whether $var_value is converted to
346     *                            to true/false
347     */
348    function _set_config_var(&$container, $var_name, $var_value, $booleanize)
349    {
350        if (substr($var_name, 0, 1) == '.') {
351            if (!$this->read_hidden)
352                return;
353            else
354                $var_name = substr($var_name, 1);
355        }
356
357        if (!preg_match("/^[a-zA-Z_]\w*$/", $var_name)) {
358            $this->_trigger_error_msg("Bad variable name '$var_name'");
359            return;
360        }
361
362        if ($booleanize) {
363            if (preg_match("/^(on|true|yes)$/i", $var_value))
364                $var_value = true;
365            else if (preg_match("/^(off|false|no)$/i", $var_value))
366                $var_value = false;
367        }
368
369        if (!isset($container[$var_name]) || $this->overwrite)
370            $container[$var_name] = $var_value;
371        else {
372            settype($container[$var_name], 'array');
373            $container[$var_name][] = $var_value;
374        }
375    }
376
377    /**
378     * @uses trigger_error() creates a PHP warning/error
379     * @param string $error_msg
380     * @param integer $error_type one of
381     */
382    function _trigger_error_msg($error_msg, $error_type = E_USER_WARNING)
383    {
384        trigger_error("Config_File error: $error_msg", $error_type);
385    }
386    /**#@-*/
387}
388
389?>
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