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<?php
/**
* IniReader
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package Cake.Configure
* @since CakePHP(tm) v 2.0
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::uses('Hash', 'Utility');
/**
* Ini file configuration engine.
*
* Since IniReader uses parse_ini_file underneath, you should be aware that this
* class shares the same behavior, especially with regards to boolean and null values.
*
* In addition to the native `parse_ini_file` features, IniReader also allows you
* to create nested array structures through usage of `.` delimited names. This allows
* you to create nested arrays structures in an ini config file. For example:
*
* `db.password = secret` would turn into `array('db' => array('password' => 'secret'))`
*
* You can nest properties as deeply as needed using `.`'s. In addition to using `.` you
* can use standard ini section notation to create nested structures:
*
* {{{
* [section]
* key = value
* }}}
*
* Once loaded into Configure, the above would be accessed using:
*
* `Configure::read('section.key');
*
* You can combine `.` separated values with sections to create more deeply
* nested structures.
*
* IniReader also manipulates how the special ini values of
* 'yes', 'no', 'on', 'off', 'null' are handled. These values will be
* converted to their boolean equivalents.
*
* @package Cake.Configure
* @see http://php.net/parse_ini_file
*/
class IniReader implements ConfigReaderInterface {
/**
* The path to read ini files from.
*
* @var array
*/
protected $_path;
/**
* The section to read, if null all sections will be read.
*
* @var string
*/
protected $_section;
/**
* Build and construct a new ini file parser. The parser can be used to read
* ini files that are on the filesystem.
*
* @param string $path Path to load ini config files from.
* @param string $section Only get one section, leave null to parse and fetch
* all sections in the ini file.
*/
public function __construct($path, $section = null) {
$this->_path = $path;
$this->_section = $section;
}
/**
* Read an ini file and return the results as an array.
*
* @param string $file Name of the file to read. The chosen file
* must be on the reader's path.
* @return array
* @throws ConfigureException
*/
public function read($file) {
$filename = $this->_path . $file;
if (!file_exists($filename)) {
$filename .= '.ini';
if (!file_exists($filename)) {
throw new ConfigureException(__d('cake_dev', 'Could not load configuration files: %s or %s', substr($filename, 0, -4), $filename));
}
}
$contents = parse_ini_file($filename, true);
if (!empty($this->_section) && isset($contents[$this->_section])) {
$values = $this->_parseNestedValues($contents[$this->_section]);
} else {
$values = array();
foreach ($contents as $section => $attribs) {
if (is_array($attribs)) {
$values[$section] = $this->_parseNestedValues($attribs);
} else {
$parse = $this->_parseNestedValues(array($attribs));
$values[$section] = array_shift($parse);
}
}
}
return $values;
}
/**
* parses nested values out of keys.
*
* @param array $values Values to be exploded.
* @return array Array of values exploded
*/
protected function _parseNestedValues($values) {
foreach ($values as $key => $value) {
if ($value === '1') {
$value = true;
}
if ($value === '') {
$value = false;
}
unset($values[$key]);
if (strpos($key, '.') !== false) {
$values = Hash::insert($values, $key, $value);
} else {
$values[$key] = $value;
}
}
return $values;
}
/**
* Dumps the state of Configure data into an ini formatted string.
*
* @param string $filename The filename on $this->_path to save into.
* @param array $data The data to convert to ini file.
* @return int Bytes saved.
*/
public function dump($filename, $data) {
$result = array();
foreach ($data as $key => $value) {
if ($key[0] != '[') {
$result[] = "[$key]";
}
if (is_array($value)) {
$keyValues = Hash::flatten($value, '.');
foreach ($keyValues as $k => $v) {
$result[] = "$k = " . $this->_value($v);
}
}
}
$contents = join("\n", $result);
return file_put_contents($this->_path . $filename, $contents);
}
/**
* Converts a value into the ini equivalent
*
* @param mixed $value to export.
* @return string String value for ini file.
*/
protected function _value($val) {
if ($val === null) {
return 'null';
}
if ($val === true) {
return 'true';
}
if ($val === false) {
return 'false';
}
return (string)$val;
}
}
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