gistfile1.txt

<?php

function trimit(&$val) {
    $val = trim($val);
}

function trim_array_contents(&$arr) {
    array_walk($arr, 'trimit');
}

function ask($question) {
    echo $question;
    $ans = trim(fgets(STDIN));
    return 'y' == strtolower($ans[0]);
}

function write($store, $filename, $contents) {
    echo "\tGot $filename ..\n";
    echo "What would you like to save this as? (hit enter to use $filename): ";
    $outfile = trim(fgets(STDIN));

    if ( empty($outfile) ) $outfile = $filename;

    $fh = fopen($store.'/'.$outfile, 'w');
    fwrite($fh, $contents);
    fclose($fh);
    echo "\tSaved $outfile ..\n";
}

function read($url) {
    $uri = parse_url($url);
    $sock = fsockopen($uri['host'], 80, $errn, $errs, 10);
    if (! $sock) {
        echo "Unable to connect.\n\t$errs\n";
        return null;
    }

    $query = "GET ".$uri['path']." HTTP/1.1\r\n".
        "Host: ".$uri['host']."\r\n\r\n";
    $contents = "";

    fwrite($sock, $query);

    while(! feof($sock))
        $contents .= fgets($sock);

    list($head, $body) = explode("\r\n\r\n", $contents, 2);

    $img_types = array('gif', 'jpeg', 'png', 'svg+xml', 'tiff');
    $reg = implode('|', $img_types);

    if (! preg_match('/Content-Type: image\/'.$reg.'/', $head, $matches) ) {
        echo "\tPath is not an image\n";
        return null;
    }

    return $body;
}


/** Program Flow */

if (! isset($argv[1]) )
    die("Usage: ".$argv[0]." <file>\n");

$file = $argv[1];
$path = realpath($file);

if (! file_exists($path) ) 
    die("File '$file' not found. Exiting ..\n");

echo "Please specify a location to store images: ";
$store = trim(fgets(STDIN));

if (! file_exists($store) ) {
    if ( ask("This directory does not exist. Would you like to create it?: ") ) {
        if (! mkdir($store, 0777, true) )
            die("Unable to make directory ..\n");
    } else {
        echo "Exiting ..\n";
        exit;
    }
    echo "Created directory - $store\n";
}

$lines = file($file);
trim_array_contents($lines);

foreach($lines as $url) {
    echo "Downloading $url ..\n";
    if ( ($contents = read($url)) !== null) {
        $filename = parse_url($url, PHP_URL_PATH);
        write($store, basename($filename), $contents);
    } else {
        echo "\tSkipping ..\n";
    }
}

echo "Done\n";

?>