PHPCODE INDENTER

<?php
/**
* @author: AMEZGHAL abdelilah <amezghal@msn.com>
*/
class Indenter {

	public function __construct(){
	}
	
	private $is_string1 = false;
	private $is_string2 = false;
	private $is_comment1 = false;
	private $is_comment2 = false;
	public function valid(){
		return  (
				$this->is_string1 == false && $this->is_string2 == false &&
				$this->is_comment1 == false && $this->is_comment2 == false
				);
	}
	public function indent($dir, $file){
		$string=trim(file_get_contents($dir.$file));
		if(substr($string,0,5)=='<?php'){
			$string=substr($string,5,strlen($string)-7);
		}else{
			$string=substr($string,2,strlen($string)-4);
		}
		$out = "<?php\n";
		$arc = 0;
		$semilicon = false;
		$space = true;
		$tab='';
		$is_condition = false;
		$update=true;
		for($i = 0; $i < strlen( $string ); $i++) {
			$char = substr($string, $i, 1);
			switch($char) {
				case '"':
					if($this->is_comment1 == false && $this->is_comment2 == false) {
						if($this->is_string1) {
							if(substr($string,$i-1,1)!='\\') {
								$this->is_string1=false;
							}
						}else{
							if($this->is_string2==false){
								$this->is_string1=true;
							}
						}
					}
					$out .= $char;
					break;

				case '\'':
					if($this->is_comment1 == false && $this->is_comment2 == false) {
						if($this->is_string2) {
							if(substr($string,$i-1,1)!='\\'){
								$this->is_string2=false;
							}
						}else{
							if($this->is_string1==false){
								$this->is_string2=true;
							}
						}
					}
					$out .= $char;
					break;

				case '/':
					if($this->is_string1 == false && $this->is_string2 == false) {
						if(substr($string, $i-1, 1)=='/'){
							$this->is_comment1=true;
							$semilicon=false;
						}
						if($this->is_comment2){
							if(substr($string, $i-1, 1)=='*'){
								$this->is_comment2=false;
								$out .= $char."\n".$tab;
								$update=false;
							}
						}
					}
					if($update) {
						$out .= $char;
					}else{
						$update = true;
					}
					break;

				case '*':
					if($this->valid()) {
						if(substr($string,$i-1,1)=='/'){
							$this->is_comment2=true;
							$out = substr($out,0,strlen($out)-1);
							$out .=$tab.'/*';
						}
					}else{
						$out .= $char;
					}
					break;
				case '(':
					if($this->valid()) {
						$arc++;
						if($is_condition==false) {
							$is_condition=true;
						}
					}
					$out .= $char;
					break;

				case ')':
					if($this->valid()) {
						$arc--;
						if($arc==0){
							$is_condition=false;
						}
					}
					$out .= $char;
					break;

				case ';':
					if($this->valid()) {
						if($is_condition){
							$out .= $char.' ';
							$space = false;
						}else{
							$semilicon = true;
							$out .= $char;
						}
					}else{
						$out .= $char;
					}
					break;

				case '{':
					if($this->valid()) {
						$out .= "\n" . $tab . $char . "\n";
						$tab .= "\t";
						$out .= $tab;
					}else{
						$out .= $char;
					}
					break;

				case '}':
					if($this->valid()) {
						$tab = substr($tab, 0, strlen($tab)-1);
						$out .="\n".$tab.$char."\n";
					}else{
						$out .= $char;
					}
					break;
				case ':':
					if($this->valid()) {
						$out .= $char."\n".$tab;
					}
					break;
				case "\n":
					if($this->is_comment1){
						$out .= $char.$tab;;
						$this->is_comment1=false;
					}elseif($this->is_comment2){
						$out .= $char.$tab;
					}
					break;
				case "\r":
				case "\t":
					if($this->is_string1==true || $this->is_string2==true) {
						$out .= $char;
					}
					break;

				case ' ':
					if($this->valid()) {
						if($space) {
							$out .= $char;
							$space = false;
						}
					}else{
						$out .= $char;
					}
					break;

				default:
					$space=true;
					if($semilicon) {
						$out .= "\n".$tab.$char;
						$semilicon = false;
					} else {
						$out .= $char;
					}
			}

		}
		$out."\n?>";
		file_put_contents($dir.'back_'.$file, $out);
	}
}
?>