Create an upgrade patch (Including binary additions/deleations) for Magento

create_patch.php

<?php
function display_usage() {
    echo <<< EOF
Usage : create_patch.php [-f|--from] [-t|--to]

-f : From Magento version (e.g. ce_1.9.0.1)
-t : To Magento version (e.g. ee_1.14.1.0)

--from : alias of -f
--to : alias of -t

EOF;
    die();
}

$shortOpts  = '';
$shortOpts .= 'f:'; // From Magento Version
$shortOpts .= 't:'; // To Magento Version

$longOpts  = array(
    'from:',    // From Magento Version
    'to:',      // To Magento Version
);
$options = getopt($shortOpts, $longOpts);

if (!isset($options['from']) && !isset($options['f'])) {
    display_usage();
}

if (!isset($options['to']) && !isset($options['t'])) {
    display_usage();
}

$from = ((isset($options['from'])) ? $options['from'] : $options['f']);
$to = ((isset($options['to'])) ? $options['to'] : $options['t']);

if (!is_dir('../'.$from)) {
    echo 'Fatal Error : "From" Magento directory does not exist.'.PHP_EOL;
    display_usage();
}

if (!is_dir('../'.$to)) {
    echo 'Fatal Error : "To" Magento directory does not exist.'.PHP_EOL;
    display_usage();
}

$workingDir = realpath(__DIR__);

@mkdir($from.'_to_'.$to);
$upgradeDir = realpath($from.'_to_'.$to);
$fromPath = realpath('../'.$from);
$toPath = realpath('../'.$to);
$patchFilename = $from.'_to_'.$to.'.patch';

// Create diff patch
chdir('../');
$cmd = 'diff -rupN '.escapeshellarg($from).' '.escapeshellarg($to).' > '.escapeshellarg($upgradeDir.'/'.$patchFilename);
exec($cmd);

// Find all binary file changes
$binFiles = array(
    'modified' => array(),
    'created' => array(),
    'deleted' => array(),
);
$fp = fopen($upgradeDir.'/'.$patchFilename, 'r');
while ($line = fgets($fp)) {
    if (strpos($line, 'Binary files ') === 0) {
        $files = preg_replace('/^Binary files '.preg_quote($from).'\/(.*) and '.preg_quote($to).'\/(.*) differ\n$/si', '$1|$2', $line);
        $files = explode('|', $files);

        if (file_exists($from.'/'.$files[0]) && file_exists($to.'/'.$files[1])) {
            // Modified
            $binFiles['modified'][] = $files[0];
        } elseif (!file_exists($to.'/'.$files[0])) {
            // Deleted
            $binFiles['deleted'][] = $files[1];
        } else {
            // Created
            $binFiles['created'][] = $files[0];
        }
    }
}
chdir($workingDir);

// Create tar of all binary files created or modified
$binaryFileAdditionsFileName = $from.'_to_'.$to.'_bin_additions.tgz';
$additionalFiles = array_merge($binFiles['modified'], $binFiles['created']);
if (count($additionalFiles)) {
    chdir($toPath);
    $cmd = 'tar -czf '.escapeshellarg($upgradeDir.'/'.$binaryFileAdditionsFileName).' '.implode(' ', $additionalFiles);
    exec($cmd);
}

// Create script for all files deleted
$binaryFileRemovalFileName = $from.'_to_'.$to.'_bin_removal.sh';
if (count($binFiles['deleted'])) {
    file_put_contents($upgradeDir.'/'.$binaryFileRemovalFileName, '#!/bin/bash'.PHP_EOL);
    foreach ($binFiles['deleted'] as $file) {
        file_put_contents($upgradeDir.'/'.$binaryFileRemovalFileName, 'rm -f '.escapeshellarg($file).PHP_EOL, FILE_APPEND);
    }
    chmod($upgradeDir.'/'.$binaryFileRemovalFileName, 0777);
}

// Create a archive of all the files.
chdir($upgradeDir);
$files = array(
    '../'.$from.'_to_'.$to.'.tgz'   // TAR filename
);
if (file_exists($patchFilename)) {$files[] = $patchFilename;}
if (file_exists($binaryFileRemovalFileName)) {$files[] = $binaryFileRemovalFileName;}
if (file_exists($binaryFileAdditionsFileName)) {$files[] = $binaryFileAdditionsFileName;}

$files = array_map('escapeshellarg', $files);
$cmd = 'tar -czf '.implode(' ', $files);
exec($cmd);
@unlink($binaryFileRemovalFileName);
@unlink($binaryFileAdditionsFileName);
@unlink($patchFilename);
chdir('../');
rmdir($upgradeDir);