<?php

	require_once	's3.class.php';

	$bucket = 'xxx';
	$bucket_dir = '';
	$local_dir = '/xxx/yyy';

	$s3_backup = new S3_Backup;
	$s3_backup->upload_dir( $bucket, $bucket_dir, $local_dir );
	

class S3_Backup
{

	function upload_dir( $bucket, $bucket_dir, $local_dir, $s3 = null )
	{
		if( !$s3 )
		{
			$s3 = new s3;
			$s3->putBucket( $bucket );
			$s3->setBucketName( $bucket );
		}
	
		$dp = opendir( $local_dir );
		if( !$dp )
		{
			echo "Fatal: Can't open local dir $local_dir\n";
			exit;
		}
		while(( $file = readdir( $dp )) !== false )
		{
			if( $file == '.' )
				continue;
			if( $file == '..' )
				continue;

			$local_file = $local_dir.'/'.$file;
			$local_file_type = filetype( $local_file );
			$name = $bucket_dir.'/'.$file;

			// s3.class has this in the constructor and s3 wants it to
			// be fresher, so just update it here
			$s3->httpDate = gmdate(DATE_RFC822);

	                // do not refresh unless hashes differ of course
			if( $local_file_type == 'file' )
			{
				$etag = md5_file( $local_file );
				$result = $s3->getObjectInfo( $name );
				if( is_array( $result ) && $result['etag'] == '"'.$etag.'"' )
				{
					echo "etag $etag matches for $name , skipping\n";
					continue;
				}
			}
		
			// keep posix attributes lazily, stat should give us enough
			// to restore usefully
			$metadata = lstat( $local_file );
			// oops, due to a sorting difference between s3.class and
			// amazon, let's just drop that numeric part of the stat()
			// array
			reset( $metadata );
			while( list($key,$val) = each( $metadata ))
			{
				if( is_numeric( $key ))
					continue;
				$output_metadata[$key] = $val;
			}
			$metadata = $output_metadata;
			$metadata['ftype'] = $local_file_type;

			// archive file according to type
			switch( $local_file_type )
			{
				case 'file':
						$data = file_get_contents( $local_file );
						break;
				case 'link':
						$data = readlink( $local_file );
						break;
				case 'dir':
				case 'fifo':
				case 'block':
				case 'char':
				default:
						$data = 'X';
						break;
			}

			// make it amazon's problem
			$s3->putObject( $name, $data, NULL, NULL, NULL, $metadata );
			echo "put: $name from ($local_file_type)".$local_file."\n";
			
			// if it was a dir, recurse
			if( $local_file_type == 'dir' )
			{
				$this->upload_dir( $bucket, $bucket_dir.'/'.$file, $local_dir.'/'.$file, $s3 );
				continue;
			}
		}
	}
}