1: <?php
  2: 
  3: namespace Budabot\Core;
  4: 
  5: /**
  6:  * The ConfigFile class provides convenient interface for reading and saving
  7:  * config files located in conf-subdirectory.
  8:  */
  9: class ConfigFile {
 10: 
 11:     private $filePath;
 12:     private $vars;
 13: 
 14:     /**
 15:      * Constructor method.
 16:      *
 17:      * $param string $filePath path to the config file
 18:      */
 19:     public function __construct($filePath) {
 20:         $this->filePath = $filePath;
 21:         $this->vars = array();
 22:     }
 23: 
 24:     /**
 25:      * Returns file path to the config file.
 26:      */
 27:     public function getFilePath() {
 28:         return $this->filePath;
 29:     }
 30: 
 31:     /**
 32:      * Loads the config file, creating the file if it doesn't exist yet.
 33:      */
 34:     public function load() {
 35:         $this->copyFromTemplateIfNeeded();
 36:         require $this->filePath;
 37:         $this->vars = $vars;
 38:     }
 39: 
 40:     /**
 41:      * Saves the config file, creating the file if it doesn't exist yet.
 42:      */
 43:     public function save() {
 44:         $vars = $this->vars;
 45:         $this->copyFromTemplateIfNeeded();
 46:         $lines = file($this->filePath);
 47:         forEach ($lines as $key => $line) {
 48:             if (preg_match("/^(.+)vars\[('|\")(.+)('|\")](.*)=(.*)\"(.*)\";(.*)$/si", $line, $arr)) {
 49:                 $lines[$key] = "$arr[1]vars['$arr[3]']$arr[5]=$arr[6]\"{$vars[$arr[3]]}\";$arr[8]";
 50:                 unset($vars[$arr[3]]);
 51:             } else if (preg_match("/^(.+)vars\[('|\")(.+)('|\")](.*)=([     ]+)([0-9]+);(.*)$/si", $line, $arr)) {
 52:                 $lines[$key] = "$arr[1]vars['$arr[3]']$arr[5]=$arr[6]{$vars[$arr[3]]};$arr[8]";
 53:                 unset($vars[$arr[3]]);
 54:             }
 55:         }
 56: 
 57:         unset($vars['module_load_paths']); // hacky
 58: 
 59:         // if there are additional vars which were not present in the config
 60:         // file or in template file then add them at end of the config file
 61:         if (!empty($vars)) {
 62:             $lines []= "<?php\n";
 63:             forEach ($vars as $name => $value) {
 64:                 if (is_string($value)) {
 65:                     $lines []= "\$vars['$name'] = \"$value\";\n";
 66:                 } else {
 67:                     $lines []= "\$vars['$name'] = $value;\n";
 68:                 }
 69:             }
 70:             $lines []= "\n";
 71:         }
 72: 
 73:         file_put_contents($this->filePath, $lines);
 74:     }
 75: 
 76:     /**
 77:      * Returns the $vars variable's contents from the config file.
 78:      */
 79:     public function getVars() {
 80:         return $this->vars;
 81:     }
 82: 
 83:     /**
 84:      * Returns var from the config file.
 85:      *
 86:      * @param string $name name of the var
 87:      */
 88:     public function getVar($name) {
 89:         if (isset($this->vars[$name])) {
 90:             return $this->vars[$name];
 91:         }
 92:         return null;
 93:     }
 94: 
 95:     /**
 96:      * Inserts the $vars array's contents. Any existing indexes are replaced
 97:      * with the new values.
 98:      *
 99:      * @param mixed[] $vars array of data to set
100:      */
101:     public function insertVars($vars) {
102:         $this->vars = array_merge($this->vars, $vars);
103:     }
104: 
105:     /**
106:      * Sets var to the config file.
107:      *
108:      * @param string $name name of the var
109:      * @param mixed $value value of the var
110:      */
111:     public function setVar($name, $value) {
112:         $this->vars[$name] = $value;
113:     }
114: 
115:     /**
116:      * Copies config.template.php to this config file if it doesn't exist yet.
117:      */
118:     private function copyFromTemplateIfNeeded() {
119:         $templatePath = __DIR__ . '/../conf/config.template.php';
120:         if (!file_exists($this->filePath)) {
121:             copy($templatePath, $this->filePath) or LegacyLogger::log('ERROR', 'StartUp', "could not create config file: {$this->filePath}");
122:         }
123:     }
124: }
125: