Make get_contents() a static method

[tweeper.git] / tweeper.php

diff --git a/tweeper.php b/tweeper.php
index 45bc786..6cdf8cf 100644 (file)
--- a/tweeper.php
+++ b/tweeper.php
@@ -54,41 +54,46 @@ function get_url_info($url)
 
 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);
 
-  switch($url_info['content_type']) {
-    case "video/avi":
-    case "image/gif":
-    case "image/jpeg":
-    case "audio/x-midi":
-    case "audio/mpeg":
-    case "video/mpeg":
-    case "audio/vorbis":
-    case "application/ogg":
-    case "audio/webm":
-    case "audio/aac":
-    case "audio/mp4":
-    case "audio/wav":
-    case "video/mp4":
-    case "video/ogg":
-      $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);
-
-      return $dom->saveXML($enc);
-    default:
-        return;
+  $supported = in_array($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);
+
+  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();
@@ -96,10 +101,11 @@ class Tweeper {
 
     $this->xsltProcessor = new XSLTProcessor();
     $this->xsltProcessor->registerPHPFunctions();
+    $this->xsltProcessor->setParameter('', 'generateEnclosure', $generate_enclosure);
     $this->xsltProcessor->importStylesheet($xslDoc);
   }
 
-  private function get_contents($uri) {
+  private static function get_contents($uri) {
     # https://www.wjsams.com/c/docs/Wiki/Php-HowToSetUserAgentOnFileGetContents
     $opts = array(
       'http' => array(
@@ -117,7 +123,7 @@ class Tweeper {
   }
 
   public function tweep($uri) {
-    $html = $this->get_contents($uri);
+    $html = Tweeper::get_contents($uri);
 
     $xmlDoc = new DOMDocument();
     $xmlDoc->loadHTML($html);
@@ -135,23 +141,28 @@ class Tweeper {
 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]} [-h|--help] <src_url>\n";
+    $usage = "{$argv[0]} [-e|-h|--help] <src_url>\n";
 
   return "usage: $usage";
 }
 
 function parse_options_cli($argv, $argc)
 {
-  $options = array();
+  $options = array(
+    'generate_enclosure' => FALSE
+  );
 
   if ($argc < 2)
     return $options;
 
-  $cli_options = getopt("h", array("help"));
+  $cli_options = getopt("eh", array("help"));
   foreach ($cli_options as $opt => $val) {
     switch ($opt) {
+    case 'e':
+      $options['generate_enclosure'] = TRUE;
+      break;
     case 'h':
     case 'help':
       echo usage($argv);
@@ -168,11 +179,16 @@ function parse_options_cli($argv, $argc)
 
 function parse_options_query_string()
 {
-  $options = array();
+  $options = array(
+    'generate_enclosure' => FALSE
+  );
 
   if (isset($_GET['src_url']))
     $options['src_url'] = $_GET['src_url'];
 
+  if (isset($_GET['generate_enclosure']))
+    $options['generate_enclosure'] = $_GET['generate_enclosure'] == 1;
+
   return $options;
 }
 
@@ -193,5 +209,5 @@ $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);
+$tweeper = new Tweeper($stylesheet, $options['generate_enclosure']);
 echo $tweeper->tweep($options['src_url']);