vQmod xml creation and merge from git diff output

vqmod_create.php

<?php
// Creates vQmod xml file from git diff output stored in a text file "git.txt"
// NOTE: Works only with SINGLE line changes.

$diffs = fopen('diffs.txt', 'r');
$modifications = "<modification>";
$fileIsOpen = $operationIsOpen = $searchIsOpen = false;
while($line = fgets($diffs)){
	if(preg_match('/^diff --git ([^ ]+) ([^ ]+)/', $line, $files)){
		if($operationIsOpen){
			$modifications .= "</operation>\n";
			$operationIsOpen = false;
		}
		if($fileIsOpen)
			$modifications .= "</file>\n";
		$count = 1;
		$files[2] = str_replace("\n", '', $files[2]);
		$files[2] = str_replace('b/', '', $files[2], $count);
		$modifications .= "<file path=\"$files[2]\" name=\"\" >\n";
		$fileIsOpen = true;
		for($i = 0; $i < 3; $i++)
			fgets($diffs);
	} elseif(preg_match('/^@@ /', $line)){
		if($operationIsOpen)
			$modifications .= "</operation>\n";
		$modifications .= "<operation>\n";
		$operationIsOpen = true;
	} elseif(preg_match('/^-(.*)/', $line, $search)){
		if(!$searchIsOpen){
			$offset = 0;
			$count = 1;
			$toBeReplaced = str_replace('-', '', $search[0], $count)."\n";
			$searchIsOpen = true;
		} else
			$offset += 1;
	} elseif(preg_match('/^\+(.*)/', $line, $add)){
		$count = 1;
		$toBeAdded = str_replace('+', '', $add[0], $count)."\n";
		if(isset($offset)){
			for($i = 0; $i < $offset; $i++){
				if(preg_match('/^\+(.*)/', fgets($diffs), $add))
					$toBeAdded .= str_replace('+', '', $add[0], $count)."\n";
			}
			if(isset($toBeReplaced)){
				$modifications .= '<search position="replace"'.(($offset > 0)? " offset=\"$offset\"" : '')
					."><![CDATA[\n$toBeReplaced]]></search>\n<add><![CDATA[\n$toBeAdded]]></add>\n";
				$searchIsOpen = false;
			}
		}
	}
}
$modifications .= "</file></modification>";
fclose($diffs);
file_put_contents('mod.xml', $modifications);

vqmod_merge.php

<?php
// Merges the generated vQmod xml with another chosen by the user.

$originalXml = new DOMDocument();
$originalXml->loadXML(file_get_contents(__DIR__."/../vqmod/xml/$argv[1]"));
$modXml = new DOMDocument();
$modXml->loadXML(file_get_contents(__DIR__.'/mod.xml'));
$xpath = new DOMXPath($originalXml);

$files = $modXml->getElementsByTagName('file');
foreach($files as $file){
	/**
	 * @var DOMElement $file
	 */
	$filename = $file->getAttribute('path');
	$originalFile = $xpath->query("//file[@path='$filename']");
	$newOperations = $file->getElementsByTagName('operation');
	if($originalFile->length > 0){
		foreach($newOperations as $operation){
			/**
			 * @var DOMElement $operation
			 */
			$existingOperations = $originalFile->item(0)->getElementsByTagName('operation');
			foreach($existingOperations as $existingOperation){
				/**
				 * @var DOMElement $existingOperation
				 */
				if($operation->getElementsByTagName('search')->item(0)->textContent ==
					$existingOperation->getElementsByTagName('search')->item(0)->textContent)
					$existingOperation->parentNode->removeChild($existingOperation);
			}
			$originalFile->item(0)->appendChild($originalXml->importNode($operation, true));
		}
	} else{
		$newFile = $originalXml->createElement('file');
		$newFile->setAttribute('path', $filename);
		$newFile->setAttribute('name', '');
		foreach($newOperations as $operation)
			$newFile->appendChild($originalXml->importNode($operation, true));

		$originalXml->getElementsByTagName('modification')->item(0)->appendChild($newFile);
	}
}

$originalXml->save(__DIR__."/../vqmod/xml/$argv[1]");