commit-msg

#!/bin/env php
<?php
// Define our Directory Seperator
define('DS', DIRECTORY_SEPARATOR);

// Path to the index folder
$path = dirname(dirname(dirname(__FILE__)));

// Version file
$index_file = realpath($path . DS .'index.php');

// Get our arguments
$message = file_get_contents($argv[1]);

// Do our processing
process($message);

// Exit 0, telling Git there was no errors, and to continue
exit(0);

// Our main processing function!
function process($message)
{
    global $path, $index_file;
    if (strlen($message) < 5) 
    {
        echo 'A commit message at least five characters';
        exit(1);
    }
    
    // Make sure we have a new build number
    $line = substr($message,0,5);
    if(!preg_match('/\[([0-9]+)\]/', $line, $output))
    {
        echo 'No build number found. Please correct the commit message by including the build number "[100]"';
        exit(1);
    }
    
    // Get the contents from our file
    $index = file_get_contents($index_file);
    
    // Match the cms build
    if(preg_match('/CMS_BUILD\', ([0-9]+)/', $index, $matches))
    {
        // Update the commit message and index file
        $version = $matches[1] + 1;
        
        // Make sure versions match!
        if($version != $output[1])
        {
            echo 'Commit message version does NOT match the index.php version (+1)!';
            exit(1);
        }

        // Get a list of added/changed/removed files for the commit.info page
        exec('git diff --cached --name-status', $files);
        
        // Create 3 output arrays! We want to add new files first, then proccess modifed, and finally removed files
        $added = $removed = $modified = array();

        // make a fancy array for the updater
        foreach($files as $mod)
        {
            if(strpos($mod, "\t"))
            {
                $file = explode("\t", $mod);
                
                // make sure the file is not null
                if(isset($file[0]) && isset($file[1]))
                {
                    // Skip the index file
                    if( $file[1] == 'index.php' ) continue;
                    
                    // Do we have a strange 3rd char?
                    if(isset($file[2]))
                    {
                        $array = array('status' => $file[0], 'file' => $file[1], 'additional' => $file[2]);
                    }
                    else
                    {
                        $array = array('status' => $file[0], 'file' => $file[1]); 
                    }
                    
                    // Add to the corrisponding array, and double check for syntax errors in files
                    $c = strtoupper( substr($file[0], 0, 1) );
                    switch( $c )
                    {
                        case "A":
                            checkSyntax($file[1]);
                            $added[] = $array;
                            break;
                        case "D":
                            $removed[] = $array;
                            break;
                        case "M":
                            checkSyntax($file[1]);
                            $modified[] = $array;
                            break;
                    }
                }
            }
        }
        
        // Combine the arrays
        $modified[] = array('status' => "M", 'file' => 'index.php');
        $array = array_merge($added, $modified, $removed);
        
        // Write to the index file, the new version
        $contents = str_replace($matches[1], $version, $matches[0]);
        $write = file_put_contents($index_file, str_replace($matches[0], $contents, $index));
        
        // Make sure the write is successful!
        if(!$write)
        {
            echo 'Was unable to write the new build number in the index.php!';
            exit(1);
        }
        
        // Now tell GIT to add the index.php modification to this commit
        exec('git add index.php', $output);

        // Write the commit contents to the commit info file
        if(!empty($array))
        {
            file_put_contents($path . DS .'commit.info', json_encode( $array ));
            exec('git add commit.info', $output);
        }
    }
    else
    {
        echo 'No build number found. Please correct the commit message by including the build number "[100]"';
        exit(1);
    }
}

// Function used to check the syntax of each file
function checkSyntax($fileName)
{
    global $path; 
    // Only check php files!
    $parts = explode('.', $fileName);
    if(!is_array($parts) || (end($parts) != 'php')) return;
    
    // Get the realpath to the file
    $file = realpath( $path . DS . $fileName );
    exec('php -l ' . $file, $output, $failed);
    if($failed) 
    {
        echo "\n\nSyntax error in $fileName: " . $output[1];
        exit(1);
    }
}
?>