date_default_timezone_set('UTC');
-function formatDate($timestamp)
+define('USER_AGENT', 'Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0');
+
+function str_to_gmdate($date)
+{
+ $timestamp = strtotime($date);
+ return epoch_to_gmdate($timestamp);
+}
+
+function epoch_to_gmdate($timestamp)
{
return gmdate('D, d M Y H:i:s', $timestamp) . ' GMT';
}
-class Tweeper {
+function get_url_info($url)
+{
+ $ch = curl_init($url);
+ curl_setopt_array($ch, array(
+ CURLOPT_HEADER => TRUE,
+ CURLOPT_NOBODY => TRUE,
+ CURLOPT_FOLLOWLOCATION => TRUE, // follow http redirects to get the real URL
+ CURLOPT_RETURNTRANSFER => TRUE,
+ CURLOPT_SSL_VERIFYHOST => FALSE,
+ CURLOPT_SSL_VERIFYPEER => FALSE,
+ CURLOPT_USERAGENT => USER_AGENT,
+ ));
+ curl_exec($ch);
+ $url_info = curl_getinfo($ch);;
+ curl_close($ch);
+
+ return $url_info;
+}
+
+function generate_enclosure($url)
+{
+ $supported_content_types = array(
+ "application/ogg",
+ "audio/aac",
+ "audio/mp4",
+ "audio/mpeg",
+ "audio/vorbis",
+ "audio/wav",
+ "audio/webm",
+ "audio/x-midi",
+ "image/gif",
+ "image/jpeg",
+ "video/avi",
+ "video/mp4",
+ "video/mpeg",
+ "video/ogg",
+ );
+
+ $url_info = get_url_info($url);
+
+ $supported = in_array($url_info['content_type'], $supported_content_types);
+ if (!$supported) {
+ error_log("Unsupported enclosure content type \"" . $url_info['content_type'] . "\" for URL: " . $url_info['url']);
+ return '';
+ }
+
+ $dom = new DomDocument();
+ $enc = $dom->createElement('enclosure');
+ $enc->setAttribute('url', $url_info['url']);
+ $enc->setAttribute('length', $url_info['download_content_length']);
+ $enc->setAttribute('type', $url_info['content_type']);
+
+ $dom->appendChild($enc);
- private $USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0";
+ return $dom->saveXML($enc);
+}
+
+
+class Tweeper {
- public function __construct($stylesheet) {
+ public function __construct($stylesheet, $generate_enclosure = FALSE) {
$stylesheet_contents = $this->get_contents($stylesheet);
$xslDoc = new DOMDocument();
$this->xsltProcessor = new XSLTProcessor();
$this->xsltProcessor->registerPHPFunctions();
+ $this->xsltProcessor->setParameter('', 'generateEnclosure', $generate_enclosure);
$this->xsltProcessor->importStylesheet($xslDoc);
}
'method' => "GET",
'header' => join(array(
"Accept-language: en\r\n",
- "User-Agent: {$this->USER_AGENT}\r\n"
+ "User-Agent: {" + USER_AGENT + "}\r\n"
))
)
);
function usage($argv)
{
if (php_sapi_name() != 'cli')
- $usage = htmlentities("{$_SERVER['SCRIPT_NAME']}?src_url=<src_url>");
+ $usage = htmlentities("{$_SERVER['SCRIPT_NAME']}?src_url=<src_url>&generate_enclosure=<0|1>");
else
- $usage = "{$argv[0]} <src_url>\n";
+ $usage = "{$argv[0]} [-e|-h|--help] <src_url>\n";
return "usage: $usage";
}
-if (isset($_GET['src_url'])) {
- $src_url = $_GET['src_url'];
-} else if (isset($argv[1])) {
- $src_url = $argv[1];
-} else {
- die(usage($argv));
+function parse_options_cli($argv, $argc)
+{
+ $options = array(
+ 'generate_enclosure' => FALSE
+ );
+
+ if ($argc < 2)
+ return $options;
+
+ $cli_options = getopt("eh", array("help"));
+ foreach ($cli_options as $opt => $val) {
+ switch ($opt) {
+ case 'e':
+ $options['generate_enclosure'] = TRUE;
+ break;
+ case 'h':
+ case 'help':
+ echo usage($argv);
+ exit(0);
+ default:
+ die(usage($argv));
+ }
+ }
+
+ $options['src_url'] = $argv[count($cli_options) + 1];
+
+ return $options;
}
-$url = parse_url($src_url);
-if (FALSE === $url || empty($url["host"]))
- die("Invalid url\n");
+function parse_options_query_string()
+{
+ $options = array(
+ 'generate_enclosure' => FALSE
+ );
-$stylesheets = array(
- "twitter.com" => "twitter_user_timeline2rss.xsl",
-);
+ if (isset($_GET['src_url']))
+ $options['src_url'] = $_GET['src_url'];
-if (FALSE === array_key_exists($url["host"], $stylesheets))
- die("Unsupported host\n");
+ if (isset($_GET['generate_enclosure']))
+ $options['generate_enclosure'] = $_GET['generate_enclosure'] == 1;
+
+ return $options;
+}
+
+
+if (php_sapi_name() != 'cli')
+ $options = parse_options_query_string();
+else
+ $options = parse_options_cli($argv, $argc);
+
+if (!isset($options['src_url']))
+ die(usage($argv));
+
+$url = parse_url($options['src_url']);
+if (FALSE === $url || empty($url["host"]))
+ die("Invalid url: ${options['src_url']}\n");
-$stylesheet = $stylesheets[$url["host"]];
+$stylesheet = __DIR__ . "/rss_converter_" . $url["host"] . ".xsl";
+if (FALSE === file_exists($stylesheet))
+ die("Conversion to RSS not supported: {$url["host"]}\n");
-$tweeper = new Tweeper($stylesheet);
-echo $tweeper->tweep($src_url);
+$tweeper = new Tweeper($stylesheet, $options['generate_enclosure']);
+echo $tweeper->tweep($options['src_url']);