#!/usr/local/php5/bin/php 
<?php
	//get our arguments into a hash, 
	//because we all have enough ram for 
	//string indexes
	$arguments = name_arguments();
	
	//check to make sure our files are there
	//will die if it fails
	check_for_files($arguments);
	
	//run transformation	
	$output = do_transform($arguments);
	
	echo("\nStarting Output\n");
	echo($output);
?>
<?php
	function name_arguments(){
		global $argv;		
		$retValue = array();
		
		//handle our command line arguments
		if(isset($argv[1])){
			$retValue['xml'] = $argv[1];
		}
		else{
			fwrite(STDERR,"ERROR: no input XML file specified.  ".
						   "Usage: \n");		
			fwrite(STDERR,"xslt [XML-FILE] [XSLT-FILE]\n");
			die();
		}
		
		
		if(isset($argv[2])){
			$retValue['xsl'] = $argv[2];
		}
		else{
			fwrite(STDERR,"No XSLT Style Sheet provided, ". 
						   "printing raw XML input \n");
		}
		return $retValue;
	}
	
	function check_for_files($arguments){
		if(!file_exists($arguments['xml']))
		{
			fwrite(STDERR,"Could not find XML file: {$arguments['xml']} \n");
			die();
		}
		
		if(isset($arguments['xsl']) && !file_exists($arguments['xsl']))
		{
			fwrite(STDERR,"Could not find XSL file: {$arguments['xsl']} \n");
			die();
		}		
	}
	
	function do_transform($arguments){
		if(isset($arguments['xsl'])){
			// Load the XML source
			$xml = new DOMDocument;
			$xml->load($arguments['xml']);
			
			$xsl = new DOMDocument;
			$xsl->load($arguments['xsl']);
			
			// Configure the transformer
			$proc = new XSLTProcessor;
			$proc->importStyleSheet($xsl); // attach the xsl rules
			
			$retValue = $proc->transformToXML($xml);
		}
		else{
			//print out XML
			$retValue = file_get_contents($arguments['xml']);
		}	
		
		return $retValue;
	}
?>