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<?php
/**
* Environment
*
* @package Less
* @subpackage environment
*/
class Less_Environment{
//public $paths = array(); // option - unmodified - paths to search for imports on
//public static $files = array(); // list of files that have been imported, used for import-once
//public $rootpath; // option - rootpath to append to URL's
//public static $strictImports = null; // option -
//public $insecure; // option - whether to allow imports from insecure ssl hosts
//public $processImports; // option - whether to process imports. if false then imports will not be imported
//public $javascriptEnabled; // option - whether JavaScript is enabled. if undefined, defaults to true
//public $useFileCache; // browser only - whether to use the per file session cache
public $currentFileInfo; // information about the current file - for error reporting and importing and making urls relative etc.
public $importMultiple = false; // whether we are currently importing multiple copies
/**
* @var array
*/
public $frames = array();
/**
* @var array
*/
public $mediaBlocks = array();
/**
* @var array
*/
public $mediaPath = array();
public static $parensStack = 0;
public static $tabLevel = 0;
public static $lastRule = false;
public static $_outputMap;
public static $mixin_stack = 0;
/**
* @var array
*/
public $functions = array();
public function Init(){
self::$parensStack = 0;
self::$tabLevel = 0;
self::$lastRule = false;
self::$mixin_stack = 0;
if( Less_Parser::$options['compress'] ){
Less_Environment::$_outputMap = array(
',' => ',',
': ' => ':',
'' => '',
' ' => ' ',
':' => ' :',
'+' => '+',
'~' => '~',
'>' => '>',
'|' => '|',
'^' => '^',
'^^' => '^^'
);
}else{
Less_Environment::$_outputMap = array(
',' => ', ',
': ' => ': ',
'' => '',
' ' => ' ',
':' => ' :',
'+' => ' + ',
'~' => ' ~ ',
'>' => ' > ',
'|' => '|',
'^' => ' ^ ',
'^^' => ' ^^ '
);
}
}
public function copyEvalEnv($frames = array() ){
$new_env = new Less_Environment();
$new_env->frames = $frames;
return $new_env;
}
public static function isMathOn(){
return !Less_Parser::$options['strictMath'] || Less_Environment::$parensStack;
}
public static function isPathRelative($path){
return !preg_match('/^(?:[a-z-]+:|\/)/',$path);
}
/**
* Canonicalize a path by resolving references to '/./', '/../'
* Does not remove leading "../"
* @param string path or url
* @return string Canonicalized path
*
*/
public static function normalizePath($path){
$segments = explode('/',$path);
$segments = array_reverse($segments);
$path = array();
$path_len = 0;
while( $segments ){
$segment = array_pop($segments);
switch( $segment ) {
case '.':
break;
case '..':
if( !$path_len || ( $path[$path_len-1] === '..') ){
$path[] = $segment;
$path_len++;
}else{
array_pop($path);
$path_len--;
}
break;
default:
$path[] = $segment;
$path_len++;
break;
}
}
return implode('/',$path);
}
public function unshiftFrame($frame){
array_unshift($this->frames, $frame);
}
public function shiftFrame(){
return array_shift($this->frames);
}
}
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