Php Programming Code Examples

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specifies which chars at the start of a line define a comment line

specifies which chars at the start of a line define a comment line

<?php 
define('BS_INIHANDLER_VERSION',      '4.0.$x$'); 

define('BS_INIHANDLER_UNQUOTE_NONE',   0); 
define('BS_INIHANDLER_UNQUOTE_DOUBLE', 1); 
define('BS_INIHANDLER_UNQUOTE_SINGLE', 2); 
define('BS_INIHANDLER_UNQUOTE_ALL',    3); 

class Bs_IniHandler extends Bs_Object { 
   
   
  /** 
  * specifies which chars at the start of a line define a comment line. 
  * the line is left-trimmed before the comparison is made. 
  * 
  * default: '#', '/', ';' 
  * 
  * note: you can only specify chars, not strings. so if you want '//' as 
  *       comment char, you need to define '/'. (which is done by default) 
  * 
  * @access public 
  * @var    array $commentChars (vector) 
  */ 
  var $commentChars = array('#', '/', ';'); 
   
  /** 
  * should quoted values be unquoted? 
  * 
  *   0 = no 
  *   BS_INIHANDLER_UNQUOTE_SINGLE = only single-quotes 'like this' 
  *   BS_INIHANDLER_UNQUOTE_DOUBLE = only double-quotes "like this" 
  *   BS_INIHANDLER_UNQUOTE_ALL    = single and double quotes (default) 
  * 
  * @access public 
  * @var    int $unQuote 
  */ 
  var $unQuote = BS_INIHANDLER_UNQUOTE_ALL; 
   
  /** 
  * vector with the sections as strings. 
  * 
  * note: since this var is not really needed, and all information is available in 
  *       $this->_params, this internal var may disappear in the future. 
  * 
  * @access private 
  * @var    array $_sections 
  */ 
  var $_sections; 
   
  /** 
  * 2-dim hash where the first dim is a hash with the section names, the 2nd 
  * is the key/value pair hash. 
  * @access private 
  * @var    array $_params 
  */ 
  var $_params; 
   
  /** 
  * @todo make private 
  */ 
  var $comments; 
   
  /** 
  * the fullpath to the currently used file. 
  * @var string $_fileFullPath 
  */ 
  var $_fileFullPath; 
   
  /** 
  * the last error message of the error that occured. not set = no error. 
  * @access private 
  * @var    string $_lastError 
  */ 
  var $_lastError; 
   
   
  /** 
  * Constructor. 
  * WARNING: please do not use the param $fileFullPath here, better call loadFile() yourself 
  * because otherwise you won't know if it worked or not. 
  * @param string $fileFullPath 
  */ 
  function Bs_IniHandler($fileFullPath='') { 
    parent::Bs_Object(__FILE__); //call parent constructor. 
    if (!empty($fileFullPath)) { 
      $this->loadFile($fileFullPath); 
    } 
  } 
   
   
  /** 
  * Loads the given file (read in and parse). 
  * @access public 
  * @param  string $fileFullPath (a fullpath to the desired file.) 
  * @return bool (see getLastError()) 
  */ 
  function loadFile($fileFullPath) { 
    $this->reset(); 
     
    if (!file_exists($fileFullPath)) { 
      $this->_lastError = "File doesn't exists: '{$fileFullPath}'"; 
      return FALSE; 
    } 
    if (!is_readable($fileFullPath)) { 
      $this->_lastError = "File is not readable: '{$fileFullPath}'"; 
      return FALSE; 
    } 
     
    $this->_fileFullPath = $fileFullPath; 
     
    $fileContent = file($fileFullPath); 
    $this->_parseFromArray($fileContent); 
     
    return TRUE; 
  } 
   
   
  /** 
  * loads the ini stuff from the given string instead of a file (read in and parse). 
  * @access public 
  * @param  string $str 
  * @return bool (see getLastError()) 
  */ 
  function loadString($str) { 
    $this->reset(); 
     
    $arr = explode("\n", $str); 
    $this->_parseFromArray($arr); 
     
    return TRUE; 
  } 
   
   
  /** 
  * sets the quote handling. 
  * @access public 
  * @param  int $mode (see constants) 
  * @return void 
  */ 
  function setQuoteHandling($mode=BS_INIHANDLER_UNQUOTE_ALL) { 
    $this->unQuote = $mode; 
  } 
   
   
  /** 
  * gets called from loadFile() and loadString() to parse the data. 
  * @access private 
  * @param  array (vector filled with strings (lines)) 
  * @return void 
  */ 
  function _parseFromArray($arr) { 
    $this->comments = array(); 
    $comment = array(); 
    $section = ''; 
     
    foreach($arr as $line) { 
      $sectionFound = $valueFound = FALSE; 
      $param = array('key'=>'', 'val'=>''); 
      do { // try 
        $line = trim($line); 
         
        # Skip empty lines 
        if (empty($line)) break; // try 
         
        # Comment 
        if (in_array($line[0], $this->commentChars)) { 
          $comment[] = $line; 
          break; // try 
        } 
         
        # Section 
        if (preg_match('/\[(.*)\]/', $line, $ar)) { 
          $section = $ar[1]; 
          $sectionFound = TRUE; 
          break; // try 
        } 
         
        # Parameter 
        // split 1x at first '=' 
        $tmp = explode('=', $line); 
        if (!is_array($tmp)) break; // try 
        if (sizeOf($tmp) < 2) { 
          //invalid comment line, whatever. 
          //no good if we arrive here. that's some crappy line that should not be in the file. 
          //we could issue a warning here. 
          $comment[] = @$tmp[0]; 
          break; 
        } 
         
        $param['key'] = trim($tmp[0]); 
        array_shift($tmp); 
        if (sizeOf($tmp)>1) $tmp[0] = implode('=', $tmp); 
        $param['val'] = isSet($tmp[0]) ? trim($tmp[0]) : ''; 
        if (empty($param['val'])) { 
          $valueFound = TRUE; 
          break; // try 
        } 
         
         
        $unQuote = ''; 
        if ($this->unQuote & BS_INIHANDLER_UNQUOTE_DOUBLE) $unQuote .= '"'; 
        if ($this->unQuote & BS_INIHANDLER_UNQUOTE_SINGLE) $unQuote .= "'"; 
        if (empty($unQuote)) { 
          $valueFound = TRUE; 
          break; // try 
        } 
         
        // trim quote 
        $regEx = '/^(['.$unQuote.']?)(.*)\1$/'; 
        if (preg_match($regEx, $param['val'], $ar)) { 
          $param['val'] = $ar[2]; 
          $valueFound = TRUE; 
          break; // try 
        } else { 
          //the value had unmatching quotes, like "here' or 'here" 
          break; // try 
        } 
      } while(FALSE); 
       
      if ($sectionFound) { 
        $this->_sections[] = $section; 
        if (!empty($comment)) $this->comments[$section] = $comment; 
        $comment = array(); 
      } else if ($valueFound) { 
        $this->_params[$section][$param['key']] = $param['val']; 
        if (!empty($comment)) $this->comments[$section .'__'. $param['key']] = $comment; 
        $comment = array(); 
      } 
    } // foreach 
    if (!empty($comment)) $this->comments['__LastComment__'] = $comment; 
  } 
   
   
  /** 
  * 
  */ 
  function toString() { 
    $outStr = "# Bs_IniHandler"; 
    foreach ($this->_params as $section => $params) { 
      if (isSet($this->comments[$section])) { 
        foreach ($this->comments[$section] as $comment) $outStr .= "{$comment}\n"; 
      } 
      $outStr .= "[".$section."]\n"; 
      foreach ($params as $key => $value) { 
        if (isSet($this->comments[$section .'__'. $key])) { 
          foreach ($this->comments[$section .'__'. $key] as $comment) $outStr .= "  {$comment}\n"; 
        } 
        $outStr .= "  " .$key. " = " .$value. "\n"; 
      } 
      $outStr .= "\n"; 
    } 
     
    if (isSet($this->comments['__LastComment__'])) { 
      foreach ($this->comments['__LastComment__'] as $comment) $outStr .= "{$comment}\n"; 
    } 
    return $outStr; 
  } 
   
   
  /** 
  * saves the ini settings to the file specified. 
  * @access public 
  * @param  string $fileFullPath (see above) 
  * @return bool (see getLastError()) 
  * @see    saveString() 
  */ 
  function saveFile($fileFullPath) { 
    $outStr = $this->toString(); 
    if (!$fp = fopen($this->_fileFullPath, 'wb')) { 
      $this->_lastError = "Failed open the file for writing: '{$fileFullPath}'"; 
      return FALSE; 
    } 
    if (!fwrite($fp, $outStr)){ 
      $this->_lastError = "Failed to write (but was able to open) the file: '{$fileFullPath}'"; 
      return FALSE; 
    } 
     
    @fclose($fp); 
    return TRUE; 
  } 
   
  /** 
  * resets this object so we can re-use it for something else. 
  * some setting vars are not reset. 
  * 
  * resets: 
  *   _sections 
  *   _params 
  *   _fileFullPath 
  *   _lastError 
  *    
  * keeps: 
  *   commentChars 
  *   unQuote 
  * 
  * @access public 
  * @return void 
  */ 
  function reset() { 
    unset($this->_sections); 
    unset($this->_params); 
    unset($this->_fileFullPath); 
    unset($this->_lastError); 
  } 
   
   
/** 
  * returns [all parameters|parameter] [for the given section]. 
  * 
  * examples: 
  *   get()                 => returns all sections with all params as 2-D hash. 
  *                              array of [<section>][<key>]  => <string> 
  *   get('section')        => returns all params for the section specified  as 1-D hash. 
  *                              array of [<key>]  => <string> 
  *   get('section', 'key') => returns the param specified of the section specified as string. 
  * 
  * note: if a param is defined in the 'global scope', use an empty string for the 
  *       $section name. example: get('', 'key') 
  * 
  * @access public 
  * @param  string $section if not given returns all sections 
  * @param  string $key if not given returns all keys 
  * @return mixed (see above) 
  * @throws null  (if the given section or key does not exist) 
  */ 
  function get($section=NULL, $key=NULL) { 
    if (is_null($section)) return $this->_params; 
    if (!isSet($this->_params[$section])) return NULL; //throw 
    if (is_null($key))     return $this->_params[$section]; 
    if (!isSet($this->_params[$section][$key])) return NULL; //throw 
    return $this->_params[$section][$key]; 
  } 
   
   
  /** 
  * tells if the section or key specified is set. 
  * 
  * examples: 
  *   has('mySection')         => tells if 'mySection' is set 
  *   has('mySection', 'myKey' => tells if myKey in mySection is set. 
  * 
  * note: case matters! 
  * 
  * @access public 
  * @param  string $section 
  * @param  string $key (default is NULL) 
  * @return bool 
  */ 
  function has($section, $key=NULL) { 
    if (is_null($key)) { 
      return (isSet($this->_params[$section])); //using _params instead of _sections cause it's a hash. in_array is slower. 
    } else { 
      return (isSet($this->_params[$section]) && isSet($this->_params[$section][$key])); 
    } 
  } 
   
   
  /** 
  * returns the text message of the last error that occured. 
  * 
  * call this function if something failed, for example after getting 
  * bool FALSE back from loadFile(). 
  * 
  * @access public 
  * @return mixed (string last error, or NULL if no error occured.) 
  */ 
  function getLastError() { 
    if (is_null($this->_lastError)) return NULL; 
    return $this->_lastError; 
  } 
} 

 
#  SELF - Test 

if (basename($_SERVER['PHP_SELF']) == 'Bs_IniHandler.class.php') { 
     
   
  $testData =<<<EOD 
   # Comment 1 
   # comment 2 
   [] 
   globalData = foo 
    
   # comment A 
   [Some test data] 
      # comment B 
      one = hallo 
      two = "hallo" 
      # comment C 
      food = "Tom's Pizza = 'good stuff'" 
      more food = Sam's Pizza's = 'best stuff' 
      empty = "" 
      noVal = 
   # comment D 
   [more test data] 
      one = hi 
      two = 'hi' 
      food = 'Pizza = "good"' 
      empty = '' 
      noVal 
   # comment E 
EOD;   
  $iniHandler = new Bs_IniHandler(); 
  $iniHandler->loadString($testData); 
   
  #XR_dump($iniHandler->comments, __LINE__, '', __FILE__); 
  XR_dump($iniHandler->toString(), __LINE__, '', __FILE__); 
} 

?>