91 lines
2.6 KiB
PHP
91 lines
2.6 KiB
PHP
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<?php
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namespace dokuwiki\plugin\config\core;
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/**
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* A naive PHP file parser
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*
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* This parses our very simple config file in PHP format. We use this instead of simply including
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* the file, because we want to keep expressions such as 24*60*60 as is.
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*
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* @author Chris Smith <chris@jalakai.co.uk>
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*/
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class ConfigParser {
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/** @var string variable to parse from the file */
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protected $varname = 'conf';
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/** @var string the key to mark sub arrays */
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protected $keymarker = Configuration::KEYMARKER;
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/**
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* Parse the given PHP file into an array
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*
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* When the given files does not exist, this returns an empty array
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*
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* @param string $file
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* @return array
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*/
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public function parse($file) {
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if(!file_exists($file)) return array();
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$config = array();
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$contents = @php_strip_whitespace($file);
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$pattern = '/\$' . $this->varname . '\[[\'"]([^=]+)[\'"]\] ?= ?(.*?);(?=[^;]*(?:\$' . $this->varname . '|$))/s';
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$matches = array();
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preg_match_all($pattern, $contents, $matches, PREG_SET_ORDER);
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for($i = 0; $i < count($matches); $i++) {
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$value = $matches[$i][2];
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// merge multi-dimensional array indices using the keymarker
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$key = preg_replace('/.\]\[./', $this->keymarker, $matches[$i][1]);
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// handle arrays
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if(preg_match('/^array ?\((.*)\)/', $value, $match)) {
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$arr = explode(',', $match[1]);
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// remove quotes from quoted strings & unescape escaped data
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$len = count($arr);
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for($j = 0; $j < $len; $j++) {
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$arr[$j] = trim($arr[$j]);
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$arr[$j] = $this->readValue($arr[$j]);
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}
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$value = $arr;
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} else {
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$value = $this->readValue($value);
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}
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$config[$key] = $value;
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}
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return $config;
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}
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/**
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* Convert php string into value
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*
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* @param string $value
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* @return bool|string
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*/
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protected function readValue($value) {
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$removequotes_pattern = '/^(\'|")(.*)(?<!\\\\)\1$/s';
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$unescape_pairs = array(
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'\\\\' => '\\',
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'\\\'' => '\'',
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'\\"' => '"'
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);
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if($value == 'true') {
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$value = true;
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} elseif($value == 'false') {
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$value = false;
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} else {
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// remove quotes from quoted strings & unescape escaped data
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$value = preg_replace($removequotes_pattern, '$2', $value);
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$value = strtr($value, $unescape_pairs);
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}
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return $value;
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}
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}
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