<?php
declare(strict_types=1);
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 2.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Core\Configure\Engine;
use Cake\Core\Configure\ConfigEngineInterface;
use Cake\Core\Configure\FileConfigTrait;
use Cake\Utility\Hash;
/**
* Ini file configuration engine.
*
* Since IniConfig 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, IniConfig 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 `['db' => ['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 also use `.` separated values in section names to create more deeply
* nested structures.
*
* IniConfig also manipulates how the special ini values of
* 'yes', 'no', 'on', 'off', 'null' are handled. These values will be
* converted to their boolean equivalents.
*
* @see https://secure.php.net/parse_ini_file
*/
class IniConfig implements ConfigEngineInterface
{
use FileConfigTrait;
/**
* File extension.
*
* @var string
*/
protected $_extension = '.ini';
/**
* The section to read, if null all sections will be read.
*
* @var string|null
*/
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|null $path Path to load ini config files from. Defaults to CONFIG.
* @param string|null $section Only get one section, leave null to parse and fetch
* all sections in the ini file.
*/
public function __construct(?string $path = null, ?string $section = null)
{
if ($path === null) {
$path = CONFIG;
}
$this->_path = $path;
$this->_section = $section;
}
/**
* Read an ini file and return the results as an array.
*
* @param string $key The identifier to read from. If the key has a . it will be treated
* as a plugin prefix. The chosen file must be on the engine's path.
* @return array Parsed configuration values.
* @throws \Cake\Core\Exception\CakeException when files don't exist.
* Or when files contain '..' as this could lead to abusive reads.
*/
public function read(string $key): array
{
$file = $this->_getFilePath($key, true);
$contents = parse_ini_file($file, true);
if ($this->_section && isset($contents[$this->_section])) {
$values = $this->_parseNestedValues($contents[$this->_section]);
} else {
$values = [];
foreach ($contents as $section => $attribs) {
if (is_array($attribs)) {
$values[$section] = $this->_parseNestedValues($attribs);
} else {
$parse = $this->_parseNestedValues([$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(array $values): array
{
foreach ($values as $key => $value) {
if ($value === '1') {
$value = true;
}
if ($value === '') {
$value = false;
}
unset($values[$key]);
if (strpos((string)$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 $key The identifier to write to. If the key has a . it will be treated
* as a plugin prefix.
* @param array $data The data to convert to ini file.
* @return bool Success.
*/
public function dump(string $key, array $data): bool
{
$result = [];
foreach ($data as $k => $value) {
$isSection = false;
/** @psalm-suppress InvalidArrayAccess */
if ($k[0] !== '[') {
$result[] = "[$k]";
$isSection = true;
}
if (is_array($value)) {
$kValues = Hash::flatten($value, '.');
foreach ($kValues as $k2 => $v) {
$result[] = "$k2 = " . $this->_value($v);
}
}
if ($isSection) {
$result[] = '';
}
}
$contents = trim(implode("\n", $result));
$filename = $this->_getFilePath($key);
return file_put_contents($filename, $contents) > 0;
}
/**
* Converts a value into the ini equivalent
*
* @param mixed $value Value to export.
* @return string String value for ini file.
*/
protected function _value($value): string
{
if ($value === null) {
return 'null';
}
if ($value === true) {
return 'true';
}
if ($value === false) {
return 'false';
}
return (string)$value;
}
}