<?php
/*--------------------------------------------------
 * TAR/GZIP/BZIP2/ZIP ARCHIVE CLASSES 2.1
 * By Devin Doucette
 * Copyright (c) 2005 Devin Doucette
 * Email: darksnoopy@shaw.ca
 *--------------------------------------------------
 * Email bugs/suggestions to darksnoopy@shaw.ca
 *--------------------------------------------------
 * This script has been created and released under
 * the GNU GPL and is free to use and redistribute
 * only if this copyright statement is not removed
 *--------------------------------------------------*/

/**
 *
 * @package workflow.engine.classes
 */

/**
 * This class is derived from the class archive, is imployed to use files .
 * zip
 *
 * @package workflow.engine.classes
 */class zip_file extends archive
{

    public function zip_file ($name)
    {
        $this->archive( $name );
        $this->options['type'] = "zip";
    }

    /**
     * This function is used to create archives .
     * zip
     *
     * @return boolean
     */
    public function create_zip ()
    {
        $files = 0;
        $offset = 0;
        $central = "";
        if (! empty( $this->options['sfx'] )) {
            if ($fp = @fopen( $this->options['sfx'], "rb" )) {
                $temp = fread( $fp, filesize( $this->options['sfx'] ) );
                fclose( $fp );
                $this->add_data( $temp );
                $offset += strlen( $temp );
                unset( $temp );
            } else {
                $this->error[] = "Could not open sfx module from {$this->options['sfx']}.";
            }
        }
        $pwd = getcwd();
        chdir( $this->options['basedir'] );
        foreach ($this->files as $current) {
            if ($current['name'] == $this->options['name']) {
                continue;
            }
            $timedate = explode( " ", date( "Y n j G i s", $current['stat'][9] ) );
            $timedate = ($timedate[0] - 1980 << 25) | ($timedate[1] << 21) | ($timedate[2] << 16) | ($timedate[3] << 11) | ($timedate[4] << 5) | ($timedate[5]);
            $block = pack( "VvvvV", 0x04034b50, 0x000A, 0x0000, (isset( $current['method'] ) || $this->options['method'] == 0) ? 0x0000 : 0x0008, $timedate );
            if ($current['stat'][7] == 0 && $current['type'] == 5) {
                $block .= pack( "VVVvv", 0x00000000, 0x00000000, 0x00000000, strlen( $current['name2'] ) + 1, 0x0000 );
                $block .= $current['name2'] . "/";
                $this->add_data( $block );
                $central .= pack( "VvvvvVVVVvvvvvVV", 0x02014b50, 0x0014, $this->options['method'] == 0 ? 0x0000 : 0x000A, 0x0000, (isset( $current['method'] ) || $this->options['method'] == 0) ? 0x0000 : 0x0008, $timedate, 0x00000000, 0x00000000, 0x00000000, strlen( $current['name2'] ) + 1, 0x0000, 0x0000, 0x0000, 0x0000, $current['type'] == 5 ? 0x00000010 : 0x00000000, $offset );
                $central .= $current['name2'] . "/";
                $files ++;
                $offset += (31 + strlen( $current['name2'] ));
            } elseif ($current['stat'][7] == 0) {
                $block .= pack( "VVVvv", 0x00000000, 0x00000000, 0x00000000, strlen( $current['name2'] ), 0x0000 );
                $block .= $current['name2'];
                $this->add_data( $block );
                $central .= pack( "VvvvvVVVVvvvvvVV", 0x02014b50, 0x0014, $this->options['method'] == 0 ? 0x0000 : 0x000A, 0x0000, (isset( $current['method'] ) || $this->options['method'] == 0) ? 0x0000 : 0x0008, $timedate, 0x00000000, 0x00000000, 0x00000000, strlen( $current['name2'] ), 0x0000, 0x0000, 0x0000, 0x0000, $current['type'] == 5 ? 0x00000010 : 0x00000000, $offset );
                $central .= $current['name2'];
                $files ++;
                $offset += (30 + strlen( $current['name2'] ));
            } elseif ($fp = @fopen( $current['name'], "rb" )) {
                $temp = fread( $fp, $current['stat'][7] );
                fclose( $fp );
                $crc32 = G::encryptCrc32( $temp );
                if (! isset( $current['method'] ) && $this->options['method'] == 1) {
                    $temp = gzcompress( $temp, $this->options['level'] );
                    $size = strlen( $temp ) - 6;
                    $temp = substr( $temp, 2, $size );
                } else {
                    $size = strlen( $temp );
                }
                $block .= pack( "VVVvv", $crc32, $size, $current['stat'][7], strlen( $current['name2'] ), 0x0000 );
                $block .= $current['name2'];
                $this->add_data( $block );
                $this->add_data( $temp );
                unset( $temp );
                $central .= pack( "VvvvvVVVVvvvvvVV", 0x02014b50, 0x0014, $this->options['method'] == 0 ? 0x0000 : 0x000A, 0x0000, (isset( $current['method'] ) || $this->options['method'] == 0) ? 0x0000 : 0x0008, $timedate, $crc32, $size, $current['stat'][7], strlen( $current['name2'] ), 0x0000, 0x0000, 0x0000, 0x0000, 0x00000000, $offset );
                $central .= $current['name2'];
                $files ++;
                $offset += (30 + strlen( $current['name2'] ) + $size);
            } else {
                $this->error[] = "Could not open file {$current['name']} for reading. It was not added.";
            }
        }
        $this->add_data( $central );
        $this->add_data( pack( "VvvvvVVv", 0x06054b50, 0x0000, 0x0000, $files, $files, strlen( $central ), $offset, ! empty( $this->options['comment'] ) ? strlen( $this->options['comment'] ) : 0x0000 ) );
        if (! empty( $this->options['comment'] )) {
            $this->add_data( $this->options['comment'] );
        }
        chdir( $pwd );
        return 1;
    }
}