# Download CSS styles from an OPML list

### Download CSS styles for shaarlis listed in an opml file

Example php script:

    <!---- ?php -->
    <!---- Copyright (c) 2014 Nicolas Delsaux (https://github.com/Riduidel) -->
    <!---- License: zlib (http://www.gzip.org/zlib/zlib_license.html) -->

    /**
     * Source: https://github.com/Riduidel
     * Download css styles for shaarlis listed in an opml file
     */
    define("SHAARLI_RSS_OPML", "https://www.ecirtam.net/shaarlirss/custom/people.opml");

    define("THEMES_TEMP_FOLDER", "new_themes");

    if(!file_exists(THEMES_TEMP_FOLDER)) {
        mkdir(THEMES_TEMP_FOLDER);
    }

    function siteUrl($pathInSite) {
        $indexPos = strpos($pathInSite, "index.php");
        if(!$indexPos) {
            return $pathInSite;
        } else {
            return substr($pathInSite, 0, $indexPos);
        }
    }

    function createShaarliHashFromOPMLL($opmlFile) {
        $result = array();
        $opml = file_get_contents($opmlFile);
        $opmlXml = simplexml_load_string($opml);
        $outlineElements = $opmlXml->xpath("body/outline");
        foreach($outlineElements as $site) {
            $siteUrl = siteUrl((string) $site['htmlUrl']);[](.html)
            $result[$siteUrl]=((string) $site['text']);[](.html)
        }
        return $result;
    }

    function getSiteFolder($url) {
        $domain = parse_url($url,  PHP_URL_HOST);
        return THEMES_TEMP_FOLDER."/".str_replace(".", "_", $domain);
    }

    function get_http_response_code($theURL) {
         $headers = get_headers($theURL);
         return substr($headers[0], 9, 3);[](.html)
    }

    /**
     * This makes the code PHP-5 only (particularly the call to "get_headers")
     */
    function copyUserStyleFrom($url, $name, $knownStyles) {
        $userStyle = $url."inc/user.css";
        if(in_array($url, $knownStyles)) {
            // TODO add log message
        } else {
            $statusCode = get_http_response_code($userStyle);
            if(intval($statusCode)<300) {
                $styleSheet = file_get_contents($userStyle);
                $siteFolder = getSiteFolder($url);
                if(!file_exists($siteFolder)) {
                    mkdir($siteFolder);
                }
                if(!file_exists($siteFolder.'/user.css')) {
                    // Copy stylesheet
                    file_put_contents($siteFolder.'/user.css', $styleSheet);
                }
                if(!file_exists($siteFolder.'/README.md')) {
                    // Then write a readme.md file
                    file_put_contents($siteFolder.'/README.md',
                        "User style from ".$name."\n"
                        ."============================="
                        ."\n\n"
                        ."This stylesheet was downloaded from ".$userStyle." on ".date(DATE_RFC822)
                        );
                }
                if(!file_exists($siteFolder.'/config.ini')) {
                    // Write a config file containing useful informations
                    file_put_contents($siteFolder.'/config.ini',
                        "site_url=".$url."\n"
                        ."site_name=".$name."\n"
                        );
                }
                if(!file_exists($siteFolder.'/home.png')) {
                    // And finally copy generated thumbnail
                    $homeThumb = $siteFolder.'/home.png';
                    file_put_contents($siteFolder.'/home.png', file_get_contents(getThumbnailUrl($url)));
                }
                echo 'Theme have been downloaded from  <a href="'.$url.'">'.$url.'</a> into '.$siteFolder
                    .'. It looks like <img src="'.$homeThumb.'"><br/>';
            }
        }
    }

    function getThumbnailUrl($url) {
        return 'http://api.webthumbnail.org/?url='.$url;
    }

    function copyUserStylesFrom($urlToNames, $knownStyles) {
        foreach($urlToNames as $url => $name) {
            copyUserStyleFrom($url, $name, $knownStyles);
        }
    }

    /**
     * Reading directory list, courtesy of http://www.laughing-buddha.net/php/dirlist/
     * @param directory the directory we want to list files of
     * @return a simple array containing the list of absolute file paths. Notice that current file (".") and parent one("..")
     * are not listed here
     */
    function getDirectoryList ($directory)  {
        $realPath = realpath($directory);
        // create an array to hold directory list
        $results = array();
        // create a handler for the directory
        $handler = opendir($directory);
        // open directory and walk through the filenames
        while ($file = readdir($handler)) {
            // if file isn't this directory or its parent, add it to the results
            if ($file != "." && $file != "..") {
                $results[ = realpath($realPath . "/" . $file);](-=-realpath($realPath-.-"/"-.-$file);.html)
            }
        }
        // tidy up: close the handler
        closedir($handler);
        // done!
        return $results;
    }

    /**
     * Start in themes folder and look in all subfolders for config.ini files.
     * These config.ini files allow us not to download styles again and again
     */
    function findKnownStyles() {
        $result = array();
        $subFolders = getDirectoryList("themes");
        foreach($subFolders as $folder) {
            $configFile = $folder."/config.ini";
            if(file_exists($configFile)) {
                $iniParameters = parse_ini_file($configFile);
                array_push($result, $iniParameters['site_url']);[](.html)
            }
        }
        return $result;
    }

    $knownStyles = findKnownStyles();
    copyUserStylesFrom(createShaarliHashFromOPMLL(SHAARLI_RSS_OPML), $knownStyles);

    <!--- ? ---->