X-Git-Url: https://git.ao2.it/tweeper.git/blobdiff_plain/d8118b5b03cd415ff41a895afdd9458ec93c88aa..a02e73270ebfb3aa4f4eaacd048e32c791d99d38:/tweeper.php diff --git a/tweeper.php b/tweeper.php index 1d50f60..ed1e1c7 100644 --- a/tweeper.php +++ b/tweeper.php @@ -1,39 +1,33 @@ - * + * + * Copyright (C) 2013-2015 Antonio Ospite + * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ +require_once 'XML/Serializer.php'; + date_default_timezone_set('UTC'); class Tweeper { private static $USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0"; - public function __construct($stylesheet, $generate_enclosure = FALSE) { - $stylesheet_contents = $this->get_contents($stylesheet); - - $xslDoc = new DOMDocument(); - $xslDoc->loadXML($stylesheet_contents); - - $this->xsltProcessor = new XSLTProcessor(); - $this->xsltProcessor->registerPHPFunctions(); - $this->xsltProcessor->setParameter('', 'generateEnclosure', $generate_enclosure); - $this->xsltProcessor->importStylesheet($xslDoc); + public function __construct($generate_enclosure = FALSE) { + $this->generate_enclosure = $generate_enclosure; } public static function epoch_to_gmdate($timestamp) @@ -91,6 +85,7 @@ class Tweeper { "audio/aac", "audio/mp4", "audio/mpeg", + "audio/ogg", "audio/vorbis", "audio/wav", "audio/webm", @@ -103,7 +98,11 @@ class Tweeper { "video/ogg", ); - $url_info = Tweeper::get_info($url); + // The RSS specification says that the enclosure element url must be http. + // See http://sourceforge.net/p/feedvalidator/bugs/72/ + $http_url = preg_replace("/^https/", "http", $url); + + $url_info = Tweeper::get_info($http_url); $supported = in_array($url_info['content_type'], $supported_content_types); if (!$supported) { @@ -151,21 +150,108 @@ class Tweeper { error_log($output); } - public function tweep($uri) { - $html = Tweeper::get_contents($uri); + private function load_stylesheet($host) { + $stylesheet = "file://" . __DIR__ . "/rss_converter_" . $host . ".xsl"; + if (FALSE === file_exists($stylesheet)) { + trigger_error("Conversion to RSS not supported: $host", E_USER_ERROR); + return NULL; + } + + $stylesheet_contents = $this->get_contents($stylesheet); + + $xslDoc = new DOMDocument(); + $xslDoc->loadXML($stylesheet_contents); + + $xsltProcessor = new XSLTProcessor(); + $xsltProcessor->registerPHPFunctions(); + $xsltProcessor->setParameter('', 'generateEnclosure', $this->generate_enclosure); + $xsltProcessor->importStylesheet($xslDoc); + + return $xsltProcessor; + } + + private function json_to_xml($html, $json_match_expr, $rootName) { + // pre-process, convert json to XML + $ret = preg_match($json_match_expr, $html, $matches); + if ($ret !== 1) { + trigger_error("Cannot match expression: $json_match_expr\n", E_USER_ERROR); + return NULL; + } + + $data = json_decode($matches[1]); + if (!$data) { + return NULL; + } + + $serializer_options = array ( + 'addDecl' => TRUE, + 'encoding' => "UTF-8", + 'indent' => ' ', + 'rootName' => $rootName, + ); + + $serializer = new XML_Serializer($serializer_options); + + $status = $serializer->serialize($data); + if (PEAR::isError($status)) { + trigger_error($status->getMessage(), E_USER_ERROR); + return NULL; + } + return $serializer->getSerializedData(); + } + + private function get_xml_instagram_com($html) { + return $this->json_to_xml($html, '/window._sharedData = (.*);/', 'instagram'); + } + + private function html_to_xml($html, $host) { $xmlDoc = new DOMDocument(); // Handle warnings and errors when loading invalid HTML. $xml_errors_value = libxml_use_internal_errors(true); - $xmlDoc->loadHTML($html); + + // If there is a host-specific method to get the xml data, use it! + $get_xml_host_method = 'get_xml_' . str_replace(".", "_", $host); + if (method_exists($this, $get_xml_host_method)) { + $xml_data = call_user_func_array(array($this, $get_xml_host_method), array($html)); + $xmlDoc->loadXML($xml_data); + } else { + $xmlDoc->loadHTML($html); + } + foreach (libxml_get_errors() as $xml_error) { $this->log_xml_error($xml_error); } libxml_clear_errors(); libxml_use_internal_errors($xml_errors_value); - $output = $this->xsltProcessor->transformToXML($xmlDoc); + return $xmlDoc; + } + + public function tweep($src_url) { + $url = parse_url($src_url); + if (FALSE === $url || empty($url["host"])) { + trigger_error("Invalid url: $src_url", E_USER_ERROR); + return NULL; + } + + $xsltProcessor = $this->load_stylesheet($url["host"]); + if (NULL === $xsltProcessor) { + return NULL; + } + + $html = $this->get_contents($src_url); + if (FALSE === $html) { + return NULL; + } + + $xmlDoc = $this->html_to_xml($html, $url["host"]); + if (NULL === $xmlDoc) { + return NULL; + } + + $output = $xsltProcessor->transformToXML($xmlDoc); if (FALSE === $output) { trigger_error('XSL transformation failed.', E_USER_ERROR); @@ -244,17 +330,5 @@ if (!isset($options['src_url'])) { exit(1); } -$url = parse_url($options['src_url']); -if (FALSE === $url || empty($url["host"])) { - fwrite($ERROR_STREAM, "Invalid url: ${options['src_url']}\n"); - exit(1); -} - -$stylesheet = "file://" . __DIR__ . "/rss_converter_" . $url["host"] . ".xsl"; -if (FALSE === file_exists($stylesheet)) { - fwrite($ERROR_STREAM, "Conversion to RSS not supported: {$url["host"]}\n"); - exit(1); -} - -$tweeper = new Tweeper($stylesheet, $options['generate_enclosure']); +$tweeper = new Tweeper($options['generate_enclosure']); echo $tweeper->tweep($options['src_url']);