bagit_fetch.php

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
 
class BagItFetch
{
 
    //{{{ Properties
 
    var $fileName;
 
    var $data;
 
    var $fileEncoding;
 
    //}}}
 
    //{{{ Public methods
 
    public function __construct($fileName, $fileEncoding='UTF-8')
    {
        $this->fileName = $fileName;
        $this->fileEncoding = $fileEncoding;
        $this->data = array();
 
        if (file_exists($this->fileName)) {
            $this->read();
        }
    }
 
    public function getData()
    {
        return $this->data;
    }
 
    public function read()
    {
        $lines = readLines($this->fileName, $this->fileEncoding);
        $fetch = array();
 
        foreach ($lines as $line) {
            $fields = preg_split('/\s+/', $line);
            if (count($fields) == 3) {
                array_push(
                    $fetch,
                    array('url' => $fields[0],
                          'length' => $fields[1],
                          'filename' => $fields[2])
                );
            }
        }
        $this->data = $fetch;
    }
 
    public function write()
    {
        $lines = array();
 
        foreach ($this->data as $fetch) {
            $data = array($fetch['url'], $fetch['length'], $fetch['filename']);
            array_push($lines, join(' ', $data) . "\n");
        }
 
        if (count($lines) == 0) {
            if (file_exists($this->fileName)) {
                unlink($this->fileName);
            }
        } else {
            writeFileText($this->fileName, $this->fileEncoding, join('', $lines));
        }
    }
 
    public function clear()
    {
        $this->data = array();
        file_put_contents($this->fileName, '');
    }
 
    public function add($url, $filename)
    {
        array_push(
            $this->data,
            array('url' => $url, 'length' => '-', 'filename' => $filename)
        );
        $this->write();
    }
 
    public function download()
    {
        $basedir = dirname($this->fileName);
        foreach ($this->data as $fetch) {
            $filename = $basedir . '/' . $fetch['filename'];
            if (! file_exists($filename)) {
                $this->_downloadFile($fetch['url'], $filename);
            }
        }
    }
 
    //}}}
 
    //{{{ Private methods
 
    private function _downloadFile($url, $filename)
    {
        $dirname = dirname($filename);
        if (! is_dir($dirname)) {
            mkdir($dirname, 0777, true);
        }
        saveUrl($url, $filename);
    }
 
    //}}}
 
}
 
 
/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * c-hanging-comment-ender-p: nil
 * End:
 */
 
 
?>