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<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.0 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Bertrand Mansion <bmansion@mamasam.com> |
// +----------------------------------------------------------------------+
//
// $Id: IniCommented.php,v 1.26 2006/05/30 06:51:05 aashley Exp $
/**
* Config parser for PHP .ini files with comments
*
* @author Bertrand Mansion <bmansion@mamasam.com>
* @package Config
*/
class Config_Container_IniCommented {
/**
* This class options
* Not used at the moment
*
* @var array
*/
var $options = array();
/**
* Constructor
*
* @access public
* @param string $options (optional)Options to be used by renderer
*/
function Config_Container_IniCommented($options = array())
{
$this->options = $options;
} // end constructor
/**
* Parses the data of the given configuration file
*
* @access public
* @param string $datasrc path to the configuration file
* @param object $obj reference to a config object
* @return mixed returns a PEAR_ERROR, if error occurs or true if ok
*/
function &parseDatasrc($datasrc, &$obj)
{
$return = true;
if (!file_exists($datasrc)) {
return PEAR::raiseError("Datasource file does not exist.", null, PEAR_ERROR_RETURN);
}
$lines = file($datasrc);
$n = 0;
$lastline = '';
$currentSection =& $obj->container;
foreach ($lines as $line) {
$n++;
if (preg_match('/^\s*;(.*?)\s*$/', $line, $match)) {
// a comment
$currentSection->createComment($match[1]);
} elseif (preg_match('/^\s*$/', $line)) {
// a blank line
$currentSection->createBlank();
} elseif (preg_match('/^\s*([a-zA-Z0-9_\-\.\s:]*)\s*=\s*(.*)\s*$/', $line, $match)) {
// a directive
$values = $this->_quoteAndCommaParser($match[2]);
if (PEAR::isError($values)) {
return PEAR::raiseError($values);
}
if (count($values)) {
foreach($values as $value) {
if ($value[0] == 'normal') {
$currentSection->createDirective(trim($match[1]), $value[1]);
}
if ($value[0] == 'comment') {
$currentSection->createComment(substr($value[1], 1));
}
}
}
} elseif (preg_match('/^\s*\[\s*(.*)\s*\]\s*$/', $line, $match)) {
// a section
$currentSection =& $obj->container->createSection($match[1]);
} else {
return PEAR::raiseError("Syntax error in '$datasrc' at line $n.", null, PEAR_ERROR_RETURN);
}
}
return $return;
} // end func parseDatasrc
/**
* Quote and Comma Parser for INI files
*
* This function allows complex values such as:
*
* <samp>
* mydirective = "Item, number \"1\"", Item 2 ; "This" is really, really tricky
* </samp>
* @param string $text value of a directive to parse for quotes/multiple values
* @return array The array returned contains multiple values, if any (unquoted literals
* to be used as is), and a comment, if any. The format of the array is:
*
* <pre>
* array(array('normal', 'first value'),
* array('normal', 'next value'),...
* array('comment', '; comment with leading ;'))
* </pre>
* @author Greg Beaver <cellog@users.sourceforge.net>
* @access private
*/
function _quoteAndCommaParser($text)
{
$text = trim($text);
if ($text == '') {
$emptyNode = array();
$emptyNode[0][0] = 'normal';
$emptyNode[0][1] = '';
return $emptyNode;
}
// tokens
$tokens['normal'] = array('"', ';', ',');
$tokens['quote'] = array('"', '\\');
$tokens['escape'] = false; // cycle
$tokens['after_quote'] = array(',', ';');
// events
$events['normal'] = array('"' => 'quote', ';' => 'comment', ',' => 'normal');
$events['quote'] = array('"' => 'after_quote', '\\' => 'escape');
$events['after_quote'] = array(',' => 'normal', ';' => 'comment');
// state stack
$stack = array();
// return information
$return = array();
$returnpos = 0;
$returntype = 'normal';
// initialize
array_push($stack, 'normal');
$pos = 0; // position in $text
do {
$char = $text{$pos};
$state = $this->_getQACEvent($stack);
if ($tokens[$state]) {
if (in_array($char, $tokens[$state])) {
switch($events[$state][$char]) {
case 'quote' :
if ($state == 'normal' &&
isset($return[$returnpos]) &&
!empty($return[$returnpos][1])) {
return PEAR::raiseError("invalid ini syntax, quotes cannot follow text '$text'",
null, PEAR_ERROR_RETURN);
}
if ($returnpos >= 0 && isset($return[$returnpos])) {
// trim any unnecessary whitespace in earlier entries
$return[$returnpos][1] = trim($return[$returnpos][1]);
} else {
$returnpos++;
}
$return[$returnpos] = array('normal', '');
array_push($stack, 'quote');
continue 2;
break;
case 'comment' :
// comments go to the end of the line, so we are done
$return[++$returnpos] = array('comment', substr($text, $pos));
return $return;
break;
case 'after_quote' :
array_push($stack, 'after_quote');
break;
case 'escape' :
// don't save the first slash
array_push($stack, 'escape');
continue 2;
break;
case 'normal' :
// start a new segment
if ($state == 'normal') {
$returnpos++;
continue 2;
} else {
while ($state != 'normal') {
array_pop($stack);
$state = $this->_getQACEvent($stack);
}
$returnpos++;
}
break;
default :
PEAR::raiseError("::_quoteAndCommaParser oops, state missing", null, PEAR_ERROR_DIE);
break;
}
} else {
if ($state != 'after_quote') {
if (!isset($return[$returnpos])) {
$return[$returnpos] = array('normal', '');
}
// add this character to the current ini segment if non-empty, or if in a quote
if ($state == 'quote') {
$return[$returnpos][1] .= $char;
} elseif (!empty($return[$returnpos][1]) ||
(empty($return[$returnpos][1]) && trim($char) != '')) {
if (!isset($return[$returnpos])) {
$return[$returnpos] = array('normal', '');
}
$return[$returnpos][1] .= $char;
if (strcasecmp('true', $return[$returnpos][1]) == 0) {
$return[$returnpos][1] = '1';
} elseif (strcasecmp('false', $return[$returnpos][1]) == 0) {
$return[$returnpos][1] = '';
}
}
} else {
if (trim($char) != '') {
return PEAR::raiseError("invalid ini syntax, text after a quote not allowed '$text'",
null, PEAR_ERROR_RETURN);
}
}
}
} else {
// no tokens, so add this one and cycle to previous state
$return[$returnpos][1] .= $char;
array_pop($stack);
}
} while (++$pos < strlen($text));
return $return;
} // end func _quoteAndCommaParser
/**
* Retrieve the state off of a state stack for the Quote and Comma Parser
* @param array $stack The parser state stack
* @author Greg Beaver <cellog@users.sourceforge.net>
* @access private
*/
function _getQACEvent($stack)
{
return array_pop($stack);
} // end func _getQACEvent
/**
* Returns a formatted string of the object
* @param object $obj Container object to be output as string
* @access public
* @return string
*/
function toString(&$obj)
{
static $childrenCount, $commaString;
if (!isset($string)) {
$string = '';
}
switch ($obj->type) {
case 'blank':
$string = "\n";
break;
case 'comment':
$string = ';'.$obj->content."\n";
break;
case 'directive':
$count = $obj->parent->countChildren('directive', $obj->name);
$content = $obj->content;
if ($content === false) {
$content = '0';
} elseif ($content === true) {
$content = '1';
} elseif (strlen(trim($content)) < strlen($content) ||
strpos($content, ',') !== false ||
strpos($content, ';') !== false ||
strpos($content, '=') !== false ||
strpos($content, '"') !== false ||
strpos($content, '%') !== false ||
strpos($content, '~') !== false) {
$content = '"'.addslashes($content).'"';
}
if ($count > 1) {
// multiple values for a directive are separated by a comma
if (isset($childrenCount[$obj->name])) {
$childrenCount[$obj->name]++;
} else {
$childrenCount[$obj->name] = 0;
$commaString[$obj->name] = $obj->name.' = ';
}
if ($childrenCount[$obj->name] == $count-1) {
// Clean the static for future calls to toString
$string .= $commaString[$obj->name].$content."\n";
unset($childrenCount[$obj->name]);
unset($commaString[$obj->name]);
} else {
$commaString[$obj->name] .= $content.', ';
}
} else {
$string = $obj->name.' = '.$content."\n";
}
break;
case 'section':
if (!$obj->isRoot()) {
$string = '['.$obj->name."]\n";
}
if (count($obj->children) > 0) {
for ($i = 0; $i < count($obj->children); $i++) {
$string .= $this->toString($obj->getChild($i));
}
}
break;
default:
$string = '';
}
return $string;
} // end func toString
} // end class Config_Container_IniCommented
?>
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