css-parser-ecss
Code (php)
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<?php
/** CSS parser class
* used to parse normal css
* @author Ruud Verbij
* @start_date 4 Oct 2007
* @version 0.1a
* @documentation www.ruudverbij.nl/css/documentation.doc (very little)
*/
class CSSParser {
// Class instance variables
/* Array with names of the css files to be parsed
* initiated by the constructor and files added by addCSSFile()
* @invariant cssNames != null && count(cssNames) > 0
*/
private $cssNames = Array();
/* Array with content of the css files to be parsed (raw)
* iniated by the constructor and updated by addCSSFile()
* @invariant cssContents != null && count(cssContents) > 0
*/
private $cssContents = Array();
/* Boolean that says if the output should be combined
* if set true; setCombinedFileName() should be called
* iniated by the constructor or updated by setCombinedFileName()
* @invariant if(combined) getCombinedFileName != null
*/
private $combine;
/* String containing the filename for the output if combine is set true
* @invariant if(getCombined() == true) combinedFileName != null
*/
private $combinedFileName = null;
/* Boolean that says if the parser should delete comments
* initiated by the constructor and updated by cutComments()
*/
private $cutComments;
// Class constructor
/** Constructor used for getting an instance of this class
* @param Array - contains all files to be parsed (numeric)
* @param Boolean - says if the fileoutput should be combined
* @param Boolean - says if the parser should cut out comments
* @require setCombinedFileName() must be called if combine is set true
* @require count(files) > 0
* @require file_exists(each file from $files)
* @ensure getFileNames() == files
* @ensure getCombined() == combine
*/
public function __construct($files,$combine = false, $cutComments = true) {
// set all instance variables
$this->cssNames = $files;
$this->combine = $combine;
$this->cutComments = $cutComments;
// get content from filenames and place them in the instance variable
for($i = 0; $i < count($this->getFileNames()); $i++) {
$this->cssContents[$i] = file_get_contents($this->cssNames[$i]);
}
}
// Query functions
/** function to check if combined has been set true
* @return Boolean
*/
public function getCombined() {
return $this->combine;
}
/** function to check the filename of the combinedFileName
* @return String or NULL
*/
public function getCombinedFileName() {
return $this->combinedFileName;
}
/** function to get all filenames that will be parsed
* @return Array
*/
public function getFileNames() {
return $this->cssNames;
}
/** function to check if the parser will cut out comments
* @return Boolean
*/
public function getCutComments() {
return $this->cutComments;
}
// Command functions
/** function to set the combinedFileName
* @param String
* @ensure getCombined() == true
* @ensure getCombinedFileName() == $filename
*/
public function setCombinedFileName($filename) {
$this->combine = true;
$this->combinedFileName = (substr($filename,strlen($filename)-3) == 'css') ? substr($filename,0,strlen($filename)-1) : $filename;
}
/** function to add a cssfile that needs to be parsed
* @param String
* @ensure getFileNames()[i] == $filename
*/
public function addCSSFile($filename) {
$this->cssNames[] = $filename;
$this->cssContents[] = file_get_contents($filename);
}
/** function to set the parser to cut comments or not
* @param Boolean
*/
public function setCutComments($cutComments) {
$this->cutComments = $cutComments;
}
// Class functions
/** function to parse the files added by addCSSFile and the constructor
* @ensure if(getCombined()) then getCombinedFileName() contains all parsed css
* else getFileNames()[i] contains parsed css for file_get_contents(getFileNames()[i])
*/
public function parseFiles() {
$this->writeOutput($this->parse());
}
/* function to write all output
* @param Array - containing arrays per file (numeric) and per file (characters) 'css' and 'filename'
* @ensure files will be written
*/
private function writeOutput($output) {
// then you can combine them
if($this->getCombined()) {
// combine all css
$sub_output;
for($i = 0; $i < count($output); $i++) {
$sub_output .= '\n' . $output[$i]['css'];
}
// write sub_output to the getCombinedFileName() and build the file if it does not exists
$handle = fopen($this->getCombinedFileName(), 'w');
fwrite($handle, $sub_output);
fclose($handle);
} else {
// write output to each file
for($i = 0; $i < count($output); $i++) {
$handle = fopen($output[$i]['filename'], 'w');
fwrite($handle, $output[$i]['css']);
fclose($handle);
}
}
}
/** echo the parsed files */
public function echoParsedFiles() {
$output = $this->parse();
$sub_output;
for($i = 0; $i < count($output); $i++) {
$sub_output .= $output[$i]['css'];
}
echo $sub_output;
}
/* parse the filenames as prepared */
private function parse() {
$output = array();
// first parse all files seperate
for($i = 0; $i < count($this->getFileNames()); $i++) {
$filenames = $this->getFileNames();
$contents = $this->cssContents[$i];
$css = $this->splitFile($contents);
$sub_output = ($this->getCutComments()) ? $this->cutComments($css[1]) : $css[1];
$sub_output = $this->extendClasses($css[0],$sub_output);
$sub_output = $this->parseVariables($css[0],$sub_output);
$output[] = array('css'=> $sub_output,'filename'=>substr($filenames[$i],0,strlen($filenames[$i])-1));
}
return $output;
}
/* function to split the file in 2 parts: the extended part and the actual css part
* @param String - file to be split
* @require $file != null
* @return Array - return[0] = extended, return[1] = actual
*/
static private function splitFile($file) {
$filebrokencontent = preg_split('/\*\*\*[\s]?(ACTUAL|EXTENDED)[\s]?CSS[\s]?\*\*\*/i',$file);
return array($filebrokencontent[1],$filebrokencontent[2]);
}
/* function to cut out comments
* @param String - containing the actual-part of the css file where comments should be cut out
* @require $actual != null
* @ensure return does not contain css-comments
* @return String - the actual-css part without comments
*/
static private function cutComments($actual) {
return preg_replace('/\/\\*.*\*\//s','',$actual);
}
/* function to parse variables declared in the extended part within the actual part
* @param String - the extended part of the css
* @param String - the actual part of the css
* @require ($extended && $actual) != null
* @return String - the actual part of the css file parsed with the variables declared in the extended part
*/
static private function parseVariables($extended,$actual) {
preg_match_all('/(\$[a-zA-Z]+[a-zA-Z0-9_]*)[\s]*:[\s]*([#0-9a-zA-Z\']+)/',$extended,$matches);
$variables = $matches[1];
$variables_content = $matches[2];
for($i = 0; $i < count($variables); $i++)
$actual = preg_replace('/\\'.$variables[$i].'/i',$variables_content[$i],$actual);
return $actual;
}
/* function to extend classes in the actual part with classes from the extended part
* @param String - the extended part of the css
* @param String - the actual part of the css
* @require ($extended && $actual) != null
* @return String - the actual part of the css file extended by the classes in the extended part
*/
static private function extendClasses($extended,$actual) {
preg_match_all('/([\.|#][a-zA-Z_]+)[\s]*{[\s]*([^}.]*)[\s]*}/s',$extended,$matches);
$classes = $matches[1];
$classes_style = $matches[2];
for($i = 0; $i < count($classes); $i++)
$actual = preg_replace('/extend-from: \''.$classes[$i].'\';/i',$classes_style[$i],$actual);
$actual = preg_replace('/extended-from:[\s]*;/i','',$actual);
return $actual;
}
}
$file = $_GET['file'];
if(preg_match('/([a-zA-Z]+\.css)/',$file,$match)) {
$cssparser = new CSSParser(array($file));
$cssparser->parseFiles();
echo file_get_contents(substr($file,0,strlen($file)-1));
}
?>
/** CSS parser class
* used to parse normal css
* @author Ruud Verbij
* @start_date 4 Oct 2007
* @version 0.1a
* @documentation www.ruudverbij.nl/css/documentation.doc (very little)
*/
class CSSParser {
// Class instance variables
/* Array with names of the css files to be parsed
* initiated by the constructor and files added by addCSSFile()
* @invariant cssNames != null && count(cssNames) > 0
*/
private $cssNames = Array();
/* Array with content of the css files to be parsed (raw)
* iniated by the constructor and updated by addCSSFile()
* @invariant cssContents != null && count(cssContents) > 0
*/
private $cssContents = Array();
/* Boolean that says if the output should be combined
* if set true; setCombinedFileName() should be called
* iniated by the constructor or updated by setCombinedFileName()
* @invariant if(combined) getCombinedFileName != null
*/
private $combine;
/* String containing the filename for the output if combine is set true
* @invariant if(getCombined() == true) combinedFileName != null
*/
private $combinedFileName = null;
/* Boolean that says if the parser should delete comments
* initiated by the constructor and updated by cutComments()
*/
private $cutComments;
// Class constructor
/** Constructor used for getting an instance of this class
* @param Array - contains all files to be parsed (numeric)
* @param Boolean - says if the fileoutput should be combined
* @param Boolean - says if the parser should cut out comments
* @require setCombinedFileName() must be called if combine is set true
* @require count(files) > 0
* @require file_exists(each file from $files)
* @ensure getFileNames() == files
* @ensure getCombined() == combine
*/
public function __construct($files,$combine = false, $cutComments = true) {
// set all instance variables
$this->cssNames = $files;
$this->combine = $combine;
$this->cutComments = $cutComments;
// get content from filenames and place them in the instance variable
for($i = 0; $i < count($this->getFileNames()); $i++) {
$this->cssContents[$i] = file_get_contents($this->cssNames[$i]);
}
}
// Query functions
/** function to check if combined has been set true
* @return Boolean
*/
public function getCombined() {
return $this->combine;
}
/** function to check the filename of the combinedFileName
* @return String or NULL
*/
public function getCombinedFileName() {
return $this->combinedFileName;
}
/** function to get all filenames that will be parsed
* @return Array
*/
public function getFileNames() {
return $this->cssNames;
}
/** function to check if the parser will cut out comments
* @return Boolean
*/
public function getCutComments() {
return $this->cutComments;
}
// Command functions
/** function to set the combinedFileName
* @param String
* @ensure getCombined() == true
* @ensure getCombinedFileName() == $filename
*/
public function setCombinedFileName($filename) {
$this->combine = true;
$this->combinedFileName = (substr($filename,strlen($filename)-3) == 'css') ? substr($filename,0,strlen($filename)-1) : $filename;
}
/** function to add a cssfile that needs to be parsed
* @param String
* @ensure getFileNames()[i] == $filename
*/
public function addCSSFile($filename) {
$this->cssNames[] = $filename;
$this->cssContents[] = file_get_contents($filename);
}
/** function to set the parser to cut comments or not
* @param Boolean
*/
public function setCutComments($cutComments) {
$this->cutComments = $cutComments;
}
// Class functions
/** function to parse the files added by addCSSFile and the constructor
* @ensure if(getCombined()) then getCombinedFileName() contains all parsed css
* else getFileNames()[i] contains parsed css for file_get_contents(getFileNames()[i])
*/
public function parseFiles() {
$this->writeOutput($this->parse());
}
/* function to write all output
* @param Array - containing arrays per file (numeric) and per file (characters) 'css' and 'filename'
* @ensure files will be written
*/
private function writeOutput($output) {
// then you can combine them
if($this->getCombined()) {
// combine all css
$sub_output;
for($i = 0; $i < count($output); $i++) {
$sub_output .= '\n' . $output[$i]['css'];
}
// write sub_output to the getCombinedFileName() and build the file if it does not exists
$handle = fopen($this->getCombinedFileName(), 'w');
fwrite($handle, $sub_output);
fclose($handle);
} else {
// write output to each file
for($i = 0; $i < count($output); $i++) {
$handle = fopen($output[$i]['filename'], 'w');
fwrite($handle, $output[$i]['css']);
fclose($handle);
}
}
}
/** echo the parsed files */
public function echoParsedFiles() {
$output = $this->parse();
$sub_output;
for($i = 0; $i < count($output); $i++) {
$sub_output .= $output[$i]['css'];
}
echo $sub_output;
}
/* parse the filenames as prepared */
private function parse() {
$output = array();
// first parse all files seperate
for($i = 0; $i < count($this->getFileNames()); $i++) {
$filenames = $this->getFileNames();
$contents = $this->cssContents[$i];
$css = $this->splitFile($contents);
$sub_output = ($this->getCutComments()) ? $this->cutComments($css[1]) : $css[1];
$sub_output = $this->extendClasses($css[0],$sub_output);
$sub_output = $this->parseVariables($css[0],$sub_output);
$output[] = array('css'=> $sub_output,'filename'=>substr($filenames[$i],0,strlen($filenames[$i])-1));
}
return $output;
}
/* function to split the file in 2 parts: the extended part and the actual css part
* @param String - file to be split
* @require $file != null
* @return Array - return[0] = extended, return[1] = actual
*/
static private function splitFile($file) {
$filebrokencontent = preg_split('/\*\*\*[\s]?(ACTUAL|EXTENDED)[\s]?CSS[\s]?\*\*\*/i',$file);
return array($filebrokencontent[1],$filebrokencontent[2]);
}
/* function to cut out comments
* @param String - containing the actual-part of the css file where comments should be cut out
* @require $actual != null
* @ensure return does not contain css-comments
* @return String - the actual-css part without comments
*/
static private function cutComments($actual) {
return preg_replace('/\/\\*.*\*\//s','',$actual);
}
/* function to parse variables declared in the extended part within the actual part
* @param String - the extended part of the css
* @param String - the actual part of the css
* @require ($extended && $actual) != null
* @return String - the actual part of the css file parsed with the variables declared in the extended part
*/
static private function parseVariables($extended,$actual) {
preg_match_all('/(\$[a-zA-Z]+[a-zA-Z0-9_]*)[\s]*:[\s]*([#0-9a-zA-Z\']+)/',$extended,$matches);
$variables = $matches[1];
$variables_content = $matches[2];
for($i = 0; $i < count($variables); $i++)
$actual = preg_replace('/\\'.$variables[$i].'/i',$variables_content[$i],$actual);
return $actual;
}
/* function to extend classes in the actual part with classes from the extended part
* @param String - the extended part of the css
* @param String - the actual part of the css
* @require ($extended && $actual) != null
* @return String - the actual part of the css file extended by the classes in the extended part
*/
static private function extendClasses($extended,$actual) {
preg_match_all('/([\.|#][a-zA-Z_]+)[\s]*{[\s]*([^}.]*)[\s]*}/s',$extended,$matches);
$classes = $matches[1];
$classes_style = $matches[2];
for($i = 0; $i < count($classes); $i++)
$actual = preg_replace('/extend-from: \''.$classes[$i].'\';/i',$classes_style[$i],$actual);
$actual = preg_replace('/extended-from:[\s]*;/i','',$actual);
return $actual;
}
}
$file = $_GET['file'];
if(preg_match('/([a-zA-Z]+\.css)/',$file,$match)) {
$cssparser = new CSSParser(array($file));
$cssparser->parseFiles();
echo file_get_contents(substr($file,0,strlen($file)-1));
}
?>