--- /dev/null
+The code follows the Drupal coding standards:
+https://www.drupal.org/coding-standards
+
+Style compliance can be checked using the Coder Sniffer extension to the PEAR
+PHP_CodeSniffer project, for instructions about how to install Coder Sniffer
+see https://www.drupal.org/node/1419988
+
+Use this command to check the style:
+
+ $ phpcs --standard=Drupal .
Tweeper depends on php-symfony-serializer which is used to convert json to xml
for some sites which provide the timeline data in json rather than in usable
html.
+
+NOTE: Tweeper also depends indirectly on php-symfony-property-access because
+the code relies on the ObjectNormalizer class which requires the
+PropertyAccess component, see
+http://symfony.com/doc/current/components/serializer.html#installation
+News for v0.6:
+==============
+
+ * Fix support for Facebook.com public pages
+ * Fix support for Dilbert.com
+ * Major code cleanup (coding style, functions naming)
+ * Fix indentation when generating the <enclosure/> element
+ * Support generating enclosure for "image/png" links
+ * Major improvements for Twitter.com:
+ - embed images directly in the item description, linking to the original
+ versions uploaded by the user;
+ - use direct links instead of ones pointing to the t.co redirector;
+ - show explicitly if the attached media is a video;
+ - add enclosure element support for attached images.
+ * Minor improvements for Instagram.com:
+ - fix the channel link;
+ - make images adapt to the feed reader view, this avoids horizontal
+ scrolling if the image is too big.
+ * Support generating enclosure for images on Dilbert.com
+ * Support generating enclosure for images on Pump.io sites
+ * Misc fixes to code and documentation
+
News for v0.5:
==============
Example of use on the command line:
- $ php tweeper.php http://twitter.com/NSACareers
+ $ php tweeper.php https://twitter.com/NSACareers
Example of use as a Liferea[2] filter:
- $ liferea-add-feed "|php .../path_to_tweeper/tweeper.php http://twitter.com/NSAcareers"
+ $ liferea-add-feed "|php .../path_to_tweeper/tweeper.php https://twitter.com/NSAcareers"
Example of use with identi.ca:
[2] http://lzone.de/liferea/
Tweeper is licensed under the GPLv3.
-Tweeper was written by Antonio Ospite http://ao2.it
+Tweeper was written by Antonio Ospite https://ao2.it
- write a better XSL stylesheet? I am not an XSL expert.
- evaluate the use of the <ttl/> RSS element.
-- use the <enclosure/> element for pump.io media objects
-- use the <enclosure/> element for images on dilbert.com
-- show images (or even cards) directly in RSS items for twitter.com
+- show cards directly in RSS items for twitter.com
+- show direct links for videos in the Instagram feed
- check the encoding of the tweets when UTF is used,
maybe solvable with mb_convert_encoding()?
See http://php.net/manual/en/domdocument.loadhtml.php
<xsl:variable name="picture-title" select=".//img[@class='img-responsive img-comic']/@alt"/>
<item>
<title>
- <xsl:value-of select="$picture-title"/>
+ <xsl:variable name="title-length" select="140"/>
+ <!-- ellipsize, inspired from http://stackoverflow.com/questions/13622338 -->
+ <xsl:choose>
+ <xsl:when test="string-length($picture-title) > $title-length">
+ <xsl:variable name="truncated-length" select="$title-length - 3"/>
+ <xsl:value-of select="substring($picture-title, 1, $truncated-length)"/>
+ <xsl:text>...</xsl:text>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:value-of select="$picture-title"/>
+ </xsl:otherwise>
+ </xsl:choose>
</title>
<link>
<xsl:value-of select="$item-permalink"/>
<xsl:value-of select="$item-permalink"/>
</guid>
<pubDate>
- <xsl:value-of select="php:functionString('Tweeper::str_to_gmdate', normalize-space(.//date))"/>
+ <xsl:value-of select="php:functionString('Tweeper::strToRssDate', normalize-space(.//date))"/>
</pubDate>
<description>
<xsl:text disable-output-escaping="yes"><![CDATA[</xsl:text>
- <img src="{$picture-url}" />
+ <img src="{$picture-url}" alt="{$picture-title}"/>
<xsl:text disable-output-escaping="yes">]]></xsl:text>
</description>
+ <xsl:if test="$generate-enclosure = 1">
+ <xsl:copy-of select="php:functionString('Tweeper::generateEnclosure', $picture-url)"/>
+ </xsl:if>
</item>
</xsl:template>
<xsl:text>https://facebook.com</xsl:text>
</xsl:variable>
+ <!--
+ Extract the page id from an element like:
+ <meta property="al:android:url" content="fb://page/793837197390834">
+
+ The page id will be used to build the permalink.
+ -->
+ <xsl:variable
+ name="page-id"
+ select="substring-after(//meta[@property='al:android:url']/@content, 'fb://page/')"/>
+
<xsl:template match="//div[contains(@class, 'userContentWrapper')]">
- <xsl:variable name="item-content" select=".//div[contains(@class, 'userContent')]"/>
- <xsl:variable name="item-permalink" select="concat($BaseURL, .//a[@target='']/@href)"/>
+ <xsl:variable name="story-id" select=".//input[@name='ft_ent_identifier']/@value"/>
+ <xsl:variable
+ name="item-permalink"
+ select="concat($BaseURL, '/permalink.php?id=', $page-id, '&story_fbid=', $story-id)"/>
+
+ <!-- Get only the first child in order to skip the footer of the content -->
+ <xsl:variable name="item-content" select="div[1]"/>
+
<item>
<title>
- <xsl:variable name="item-title" select="$item-content/p"/>
+ <xsl:variable name="item-title" select="$item-content//p"/>
<xsl:variable name="title-length" select="140"/>
<!-- ellipsize, inspired from http://stackoverflow.com/questions/13622338 -->
<xsl:choose>
</guid>
<pubDate>
<xsl:variable name="timestamp" select=".//abbr[@data-shorten]/@data-utime"/>
- <xsl:value-of select="php:functionString('Tweeper::epoch_to_gmdate', number($timestamp))"/>
+ <xsl:value-of select="php:functionString('Tweeper::epochToRssDate', $timestamp)"/>
</pubDate>
<description>
+
+ <!--
+ Get only the children starting from the one with class="userContent",
+ this way the content header is skipped
+ -->
+ <xsl:variable
+ name="usercontent-position"
+ select="count($item-content/div[contains(@class, 'userContent')]/preceding-sibling::*) + 1"/>
+
<xsl:text disable-output-escaping="yes"><![CDATA[</xsl:text>
- <xsl:copy-of select="$item-content/node()"/>
- <xsl:copy-of select=".//div[@class='mtm']/node()"/>
+ <xsl:copy-of select="$item-content/div[position() >= $usercontent-position]"/>
<xsl:text disable-output-escaping="yes">]]></xsl:text>
</description>
</item>
<xsl:variable name="day" select="substring($date, 4, 2)"/>
<xsl:variable name="year" select="substring($date, 7, 2)"/>
<xsl:variable name="iso-date" select="concat('20', $year, '-', $month, '-', $day)"/>
- <xsl:value-of select="php:functionString('Tweeper::str_to_gmdate', $iso-date)"/>
+ <xsl:value-of select="php:functionString('Tweeper::strToRssDate', $iso-date)"/>
</pubDate>
<description>
<xsl:text disable-output-escaping="yes"><![CDATA[</xsl:text>
xsl:extension-element-prefixes="php"
exclude-result-prefixes="php">
- <xsl:param name="generateEnclosure"/>
+ <xsl:param name="generate-enclosure"/>
<xsl:output method="xml" indent="yes"/>
<xsl:text>https://instagram.com</xsl:text>
</xsl:variable>
- <xsl:template match="display_src">
- <xsl:value-of disable-output-escaping="yes" select="php:function('Tweeper::generate_enclosure', string(text()))"/>
- </xsl:template>
-
<xsl:variable name="user-name" select="//ProfilePage/user/username"/>
<!-- Some users do not specify the full name -->
</xsl:choose>
</xsl:variable>
- <xsl:template match="//media/nodes">
+ <xsl:template match="//ProfilePage/user/media/nodes">
<xsl:variable name="item-content-image" select="./display_src"/>
<xsl:variable name="item-content-caption" select="./caption"/>
<xsl:variable name="item-permalink" select="concat($BaseURL, '/p/', ./code, '/')"/>
</guid>
<pubDate>
<xsl:variable name="timestamp" select="./date"/>
- <xsl:value-of select="php:functionString('Tweeper::epoch_to_gmdate', number($timestamp))"/>
+ <xsl:value-of select="php:functionString('Tweeper::epochToRssDate', $timestamp)"/>
</pubDate>
<description>
<xsl:text disable-output-escaping="yes"><![CDATA[</xsl:text>
<p>
<xsl:if test="./is_video/text() = 1">
- (Video)
+ (Video)
</xsl:if>
<xsl:value-of select="$item-content-caption"/>
</p><br />
- <a href="{$item-permalink}"><img src="{$item-content-image}" /></a>
+ <a href="{$item-permalink}"><img src="{$item-content-image}" style="max-width: 100%"/></a>
<xsl:text disable-output-escaping="yes">]]></xsl:text>
</description>
- <xsl:if test="$generateEnclosure = 1">
- <xsl:apply-templates select="./display_src"/>
+ <xsl:if test="$generate-enclosure = 1">
+ <xsl:copy-of select="php:functionString('Tweeper::generateEnclosure', $item-content-image)"/>
</xsl:if>
</item>
</xsl:template>
<xsl:template match="/">
<xsl:variable name="channel-title" select="concat('Instagram / ', $screen-name)"/>
- <xsl:variable name="channel-link" select="concat($BaseURL, //__path)"/>
+ <xsl:variable name="channel-link" select="concat($BaseURL, '/', $user-name)"/>
<rss version="2.0">
<xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
<xsl:value-of select="$channel-link"/>
</link>
<url>
- <xsl:value-of select="//user/profile_pic_url"/>
+ <xsl:value-of select="//ProfilePage/user/profile_pic_url"/>
</url>
</image>
- <xsl:apply-templates select="//media/nodes"/>
+ <xsl:apply-templates select="//ProfilePage/user/media/nodes"/>
</channel>
</rss>
</xsl:template>
<xsl:value-of select="$item-permalink"/>
</guid>
<pubDate>
- <xsl:value-of select="php:functionString('Tweeper::str_to_gmdate', .//abbr[@class='easydate']/@title)"/>
+ <xsl:value-of select="php:functionString('Tweeper::strToRssDate', .//abbr[@class='easydate']/@title)"/>
</pubDate>
<description>
<xsl:value-of select="concat($user-name, ': ')"/>
<xsl:copy-of select="$item-content/node()"/>
<xsl:text disable-output-escaping="yes">]]></xsl:text>
</description>
+ <xsl:if test="$generate-enclosure = 1">
+ <xsl:variable name="image-thumb-link" select=".//img[contains(@class, 'object-image')]/@src"/>
+ <xsl:if test="$image-thumb-link">
+ <xsl:variable name="image-link" select="php:functionString('str_replace', '_thumb', '', $image-thumb-link)"/>
+ <xsl:copy-of select="php:functionString('Tweeper::generateEnclosure', $image-link)"/>
+ </xsl:if>
+ </xsl:if>
</item>
</xsl:template>
xsl:extension-element-prefixes="php"
exclude-result-prefixes="php">
- <xsl:param name="generateEnclosure"/>
+ <xsl:param name="generate-enclosure"/>
<xsl:output method="xml" indent="yes"/>
<xsl:text>https://twitter.com</xsl:text>
</xsl:variable>
+ <!-- Identity transform -->
+ <xsl:template match="@*|node()">
+ <xsl:copy>
+ <xsl:apply-templates select="@*|node()"/>
+ </xsl:copy>
+ </xsl:template>
+
+ <!--
+ Anchors to external links provide the direct URL in the
+ data-expanded-url attribute, so use this in the href attribute too
+ instead of the default short URL which uses the t.co redirection
+ service.
+
+ NOTE: when creating an element, attributes must be processed _before_
+ adding the contents (either children or a value):
+ http://stackoverflow.com/questions/21984867/
+ -->
<xsl:template match="a[@data-expanded-url]">
- <xsl:value-of disable-output-escaping="yes" select="php:function('Tweeper::generate_enclosure', string(./@data-expanded-url))"/>
+ <!-- Prepend and append a white space for aestethic reasons -->
+ <xsl:text> </xsl:text>
+ <a>
+ <xsl:attribute name="href">
+ <xsl:value-of select="@data-expanded-url"/>
+ </xsl:attribute>
+ <!-- Also strip and … -->
+ <xsl:value-of select="translate(., ' …', '')"/>
+ </a>
+ <xsl:text> </xsl:text>
+ </xsl:template>
+
+ <!--
+ These are links to pic.twitter.com, use the direct link for those
+ too instead of the t.co redirections.
+ -->
+ <xsl:template match="a[@data-pre-embedded='true']">
+ <!-- Prepend and append a white space for aestethic reasons -->
+ <xsl:text> </xsl:text>
+ <a>
+ <xsl:attribute name="href">
+ <xsl:value-of select="concat('https://', .)"/>
+ </xsl:attribute>
+ <xsl:value-of select="concat('https://', .)"/>
+ </a>
+ <xsl:text> </xsl:text>
+ </xsl:template>
+
+ <!-- Present images in a more convenient way -->
+ <xsl:template match="div[@data-image-url]">
+ <a>
+ <xsl:attribute name="href">
+ <xsl:value-of select="concat(@data-image-url, ':orig')"/>
+ </xsl:attribute>
+ <img>
+ <xsl:attribute name="src">
+ <xsl:value-of select="@data-image-url"/>
+ </xsl:attribute>
+ </img>
+ </a>
+ </xsl:template>
+
+ <!-- Don't repeat background in embedded media content -->
+ <xsl:template match="div[contains(@class, 'PlayableMedia-player')]">
+ <xsl:copy>
+ <xsl:apply-templates select="@*"/>
+ <xsl:attribute name="style">
+ <xsl:value-of select="concat(@style, '; background-repeat: no-repeat')"/>
+ </xsl:attribute>
+ <xsl:apply-templates select="node()"/>
+ </xsl:copy>
+ </xsl:template>
+
+ <xsl:template match="a[@data-expanded-url]" mode="enclosure">
+ <xsl:copy-of select="php:functionString('Tweeper::generateEnclosure', ./@data-expanded-url)"/>
+ </xsl:template>
+
+ <xsl:template match="div[@data-image-url]" mode="enclosure">
+ <xsl:copy-of select="php:functionString('Tweeper::generateEnclosure', concat(./@data-image-url, ':orig'))"/>
</xsl:template>
<xsl:variable name="screen-name" select="//div[@class='user-actions btn-group not-following ']/@data-screen-name"/>
<xsl:template match="//li[@data-item-id and @data-item-type='tweet']">
<xsl:variable name="user-name" select=".//div[contains(@class, 'js-stream-tweet')]/@data-screen-name"/>
<xsl:variable name="item-content" select=".//p[contains(@class, 'js-tweet-text')]"/>
+ <xsl:variable name="item-media" select=".//div[contains(@class, 'AdaptiveMedia-container')]"/>
<xsl:variable name="item-permalink" select="concat($BaseURL, .//div[@data-permalink-path]/@data-permalink-path)"/>
+
+ <xsl:variable name="item-has-video" select="$item-media//*[contains(@class, 'PlayableMedia--video')]"/>
<item>
<title>
- <xsl:value-of select="concat($user-name, ': ', $item-content)"/>
+ <xsl:value-of select="concat($user-name, ': ')"/>
+ <xsl:if test="$item-has-video">
+ <xsl:text>(Video) </xsl:text>
+ </xsl:if>
+ <!--
+ Prepend a space in front of the URLs which are not
+ preceded by an open parenthesis, for aestethic reasons.
+ Also, regex, I know: http://xkcd.com/1171/
+ -->
+ <xsl:variable
+ name="processed-title"
+ select="php:functionString('preg_replace', '@((?<!\()(?:http[s]?://|pic.twitter.com))@', ' \1', $item-content)"/>
+ <!-- Also strip and … -->
+ <xsl:value-of select="normalize-space(translate($processed-title, ' …', ''))"/>
</title>
<link>
<xsl:value-of select="$item-permalink"/>
</guid>
<pubDate>
<xsl:variable name="timestamp" select=".//span[contains(@class, 'js-short-timestamp')]/@data-time"/>
- <xsl:value-of select="php:functionString('Tweeper::epoch_to_gmdate', number($timestamp))"/>
+ <xsl:value-of select="php:functionString('Tweeper::epochToRssDate', number($timestamp))"/>
</pubDate>
<description>
<xsl:value-of select="concat($user-name, ': ')"/>
<xsl:text disable-output-escaping="yes"><![CDATA[</xsl:text>
- <xsl:copy-of select="$item-content/node()"/>
+ <xsl:if test="$item-has-video">
+ <xsl:text>(Video) </xsl:text>
+ </xsl:if>
+ <xsl:apply-templates select="$item-content/node()"/>
+ <xsl:apply-templates select="$item-media/node()"/>
<xsl:text disable-output-escaping="yes">]]></xsl:text>
</description>
- <xsl:if test="$generateEnclosure = 1">
- <xsl:apply-templates select="$item-content//a[@data-expanded-url]"/>
+ <xsl:if test="$generate-enclosure = 1">
+ <xsl:apply-templates select="$item-content//a[@data-expanded-url]" mode="enclosure"/>
+ <xsl:apply-templates select="$item-media//div[@data-image-url]" mode="enclosure"/>
</xsl:if>
</item>
</xsl:template>
<xsl:value-of select="$channel-link"/>
</link>
<url>
- <xsl:value-of select="//a[contains(@class, 'profile-picture media-thumbnail')]/@href"/>
+ <xsl:value-of select="//a[contains(@class, 'profile-picture')]/@href"/>
</url>
</image>
<xsl:apply-templates select="//ol[@id='stream-items-id']/li[@data-item-id and @data-item-type='tweet']"/>
#!/usr/bin/env php
<?php
-require(dirname(__FILE__) . '/tweeper.php');
+/**
+ * @file
+ * CLI file to run tweeper.
+ */
+
+require dirname(__FILE__) . '/tweeper.php';
Getting the RSS feed of some Twitter user:
- tweeper http://twitter.com/NSACareers
+ tweeper https://twitter.com/NSACareers
Using tweeper as a filter for the Liferea feed reader:
- liferea-add-feed "|tweeper http://twitter.com/NSAcareers"
+ liferea-add-feed "|tweeper https://twitter.com/NSAcareers"
To use tweeper via web there are two options (the examples assume the
installation directory to be `/usr/share/php/tweeper/`):
RESOURCES
---------
-Main web site: <http://git.ao2.it/tweeper.git>
+Main web site: <https://git.ao2.it/tweeper.git>
COPYING
<?php
-/*
- * tweeper - a Twitter to RSS web scraper
+/**
+ * @file
+ * Tweeper - a Twitter to RSS web scraper.
*
* Copyright (C) 2013-2015 Antonio Ospite <ao2@ao2.it>
*
date_default_timezone_set('UTC');
+/**
+ * Scrape supported websites and perform conversion to RSS.
+ */
class Tweeper {
- private static $USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0";
+ private static $userAgent = "Mozilla/5.0 (Windows NT 6.1; rv:22.0) Gecko/20130405 Firefox/22.0";
+ /**
+ * Constructor sets up {@link $generate_enclosure}.
+ */
public function __construct($generate_enclosure = FALSE) {
$this->generate_enclosure = $generate_enclosure;
}
- public static function epoch_to_gmdate($timestamp)
- {
+ /**
+ * Convert numeric Epoch to the date format expected in a RSS document.
+ */
+ public static function epochToRssDate($timestamp) {
if (!is_numeric($timestamp) || is_nan($timestamp)) {
$timestamp = 0;
}
- return gmdate('D, d M Y H:i:s', $timestamp) . ' GMT';
+ return gmdate(DATE_RSS, $timestamp);
}
- public static function str_to_gmdate($date)
- {
+ /**
+ * Convert generic date string to the date format expected in a RSS document.
+ */
+ public static function strToRssDate($date) {
$timestamp = strtotime($date);
if (FALSE === $timestamp) {
$timestamp = 0;
}
- return Tweeper::epoch_to_gmdate($timestamp);
+ return Tweeper::epochToRssDate($timestamp);
+ }
+
+ /**
+ * Convert string to UpperCamelCase.
+ */
+ public static function toUpperCamelCase($str, $delim = ' ') {
+ $str_upper = ucwords($str, $delim);
+ $str_camel_case = str_replace($delim, '', $str_upper);
+ return $str_camel_case;
}
- private static function get_contents($url)
- {
+ /**
+ * Get the contents from a URL.
+ */
+ private static function getUrlContents($url) {
$ch = curl_init($url);
curl_setopt_array($ch, array(
CURLOPT_HEADER => FALSE,
- CURLOPT_FOLLOWLOCATION => TRUE, // follow http redirects to get the real URL
+ // Follow http redirects to get the real URL.
+ CURLOPT_FOLLOWLOCATION => TRUE,
CURLOPT_RETURNTRANSFER => TRUE,
CURLOPT_SSL_VERIFYHOST => FALSE,
CURLOPT_SSL_VERIFYPEER => FALSE,
CURLOPT_HTTPHEADER => array('Accept-language: en'),
- CURLOPT_USERAGENT => Tweeper::$USER_AGENT,
+ CURLOPT_USERAGENT => Tweeper::$userAgent,
));
$contents = curl_exec($ch);
curl_close($ch);
return $contents;
}
- private static function get_info($url)
- {
+ /**
+ * Get the headers from a URL.
+ */
+ private static function getUrlInfo($url) {
$ch = curl_init($url);
curl_setopt_array($ch, array(
CURLOPT_HEADER => TRUE,
CURLOPT_NOBODY => TRUE,
- CURLOPT_FOLLOWLOCATION => TRUE, // follow http redirects to get the real URL
+ // Follow http redirects to get the real URL.
+ CURLOPT_FOLLOWLOCATION => TRUE,
CURLOPT_RETURNTRANSFER => TRUE,
CURLOPT_SSL_VERIFYHOST => FALSE,
CURLOPT_SSL_VERIFYPEER => FALSE,
- CURLOPT_USERAGENT => Tweeper::$USER_AGENT,
+ CURLOPT_USERAGENT => Tweeper::$userAgent,
));
curl_exec($ch);
$url_info = curl_getinfo($ch);
return $url_info;
}
- public static function generate_enclosure($url)
- {
+ /**
+ * Generate an RSS <enclosure/> element.
+ */
+ public static function generateEnclosure($url) {
$supported_content_types = array(
"application/ogg",
"audio/aac",
"audio/x-midi",
"image/gif",
"image/jpeg",
+ "image/png",
"video/avi",
"video/mp4",
"video/mpeg",
"video/ogg",
);
- // 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);
+ $url_info = Tweeper::getUrlInfo($url);
$supported = in_array($url_info['content_type'], $supported_content_types);
if (!$supported) {
return '';
}
- $dom = new DomDocument();
+ // 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_info['url']);
+
+ $dom = new DOMDocument();
$enc = $dom->createElement('enclosure');
- $enc->setAttribute('url', $url_info['url']);
+ $enc->setAttribute('url', $http_url);
$enc->setAttribute('length', $url_info['download_content_length']);
$enc->setAttribute('type', $url_info['content_type']);
- $dom->appendChild($enc);
-
- return $dom->saveXML($enc);
+ return $enc;
}
- /* Mimic the message from libxml.c::php_libxml_ctx_error_level() */
- private function log_xml_error($error) {
+ /**
+ * Mimic the message from libxml.c::php_libxml_ctx_error_level()
+ */
+ private static function logXmlError($error) {
$output = "";
switch ($error->level) {
- case LIBXML_ERR_WARNING:
- $output .= "Warning $error->code: ";
- break;
- case LIBXML_ERR_ERROR:
- $output .= "Error $error->code: ";
- break;
- case LIBXML_ERR_FATAL:
- $output .= "Fatal Error $error->code: ";
- break;
+ case LIBXML_ERR_WARNING:
+ $output .= "Warning $error->code: ";
+ break;
+
+ case LIBXML_ERR_ERROR:
+ $output .= "Error $error->code: ";
+ break;
+
+ case LIBXML_ERR_FATAL:
+ $output .= "Fatal Error $error->code: ";
+ break;
}
$output .= trim($error->message);
if ($error->file) {
$output .= " in $error->file";
- } else {
+ }
+ else {
$output .= " in Entity,";
}
- $output .=" line $error->line";
+ $output .= " line $error->line";
error_log($output);
}
- private function load_stylesheet($host) {
- $stylesheet = "file://" . __DIR__ . "/rss_converter_" . $host . ".xsl";
- if (FALSE === file_exists($stylesheet)) {
- trigger_error("Conversion to RSS not supported for $host ($stylesheet not found)", 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: $json_match_expr\n", E_USER_ERROR);
- return NULL;
- }
-
- // Apparenty the ObjectNormalizer used afterwards is not able to handle
+ /**
+ * Convert json to XML.
+ */
+ private static function jsonToXml($json, $root_node_name) {
+ // Apparently the ObjectNormalizer used afterwards is not able to handle
// the stdClass object created by json_decode() with the default setting
- // $assoc = false; so use $assoc = true
- $data = json_decode($matches[1], $assoc = true);
+ // $assoc = false; so use $assoc = true.
+ $data = json_decode($json, $assoc = TRUE);
if (!$data) {
return NULL;
}
$normalizer = new ObjectNormalizer();
$serializer = new Serializer(array($normalizer), array($encoder));
- $serializer_options = array (
+ $serializer_options = array(
'xml_encoding' => "UTF-8",
'xml_format_output' => TRUE,
- 'xml_root_node_name' => $rootName,
+ 'xml_root_node_name' => $root_node_name,
);
$xml_data = $serializer->serialize($data, 'xml', $serializer_options);
return $xml_data;
}
- private function get_xml_instagram_com($html) {
- return $this->json_to_xml($html, '/window._sharedData = (.*);/', 'instagram');
+ /**
+ * Convert the Instagram content to XML.
+ */
+ private function getXmlInstagramCom($html) {
+ // Extract the json data from the html code.
+ $json_match_expr = '/window._sharedData = (.*);/';
+ $ret = preg_match($json_match_expr, $html, $matches);
+ if ($ret !== 1) {
+ trigger_error("Cannot match expression: $json_match_expr\n", E_USER_ERROR);
+ return NULL;
+ }
+
+ return Tweeper::jsonToXml($matches[1], 'instagram');
}
- private function preprocess_html_facebook_com($html) {
+ /**
+ * Make the Facebook HTML processable.
+ */
+ private function preprocessHtmlFacebookCom($html) {
$html = str_replace('<!--', '', $html);
$html = str_replace('-->', '', $html);
return $html;
}
- private function html_to_xml($html, $host) {
+ /**
+ * Convert the HTML retrieved from the site to XML.
+ */
+ private function htmlToXml($html, $host) {
$xmlDoc = new DOMDocument();
// Handle warnings and errors when loading invalid HTML.
- $xml_errors_value = libxml_use_internal_errors(true);
+ $xml_errors_value = libxml_use_internal_errors(TRUE);
- // If there is a host-specific method to get the xml data, use it!
- $get_xml_host_method = 'get_xml_' . str_replace(".", "_", $host);
+ // If there is a host-specific method to get the XML data, use it!
+ $get_xml_host_method = 'getXml' . Tweeper::toUpperCamelCase($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 {
+ }
+ else {
$xmlDoc->loadHTML($html);
}
foreach (libxml_get_errors() as $xml_error) {
- $this->log_xml_error($xml_error);
+ Tweeper::logXmlError($xml_error);
}
libxml_clear_errors();
libxml_use_internal_errors($xml_errors_value);
return $xmlDoc;
}
+ /**
+ * Load a stylesheet if the web site is supported.
+ */
+ private function loadStylesheet($host) {
+ $stylesheet = "file://" . __DIR__ . "/rss_converter_" . $host . ".xsl";
+ if (FALSE === file_exists($stylesheet)) {
+ trigger_error("Conversion to RSS not supported for $host ($stylesheet not found)", E_USER_ERROR);
+ return NULL;
+ }
+
+ $stylesheet_contents = Tweeper::getUrlContents($stylesheet);
+
+ $xslDoc = new DOMDocument();
+ $xslDoc->loadXML($stylesheet_contents);
+
+ $xsltProcessor = new XSLTProcessor();
+ $xsltProcessor->registerPHPFunctions();
+ $xsltProcessor->setParameter('', 'generate-enclosure', $this->generate_enclosure);
+ $xsltProcessor->importStylesheet($xslDoc);
+
+ return $xsltProcessor;
+ }
+
+ /**
+ * Convert the site content to RSS.
+ */
public function tweep($src_url) {
$url = parse_url($src_url);
if (FALSE === $url || empty($url["host"])) {
- trigger_error("Invalid url: $src_url", E_USER_ERROR);
+ trigger_error("Invalid URL: $src_url", E_USER_ERROR);
return NULL;
}
- // Strip the leading www. to be more forgiving on input URLs
+ // Strip the leading www. to be more forgiving on input URLs.
$host = preg_replace('/^www\./', '', $url["host"]);
- $xsltProcessor = $this->load_stylesheet($host);
+ $xsltProcessor = $this->loadStylesheet($host);
if (NULL === $xsltProcessor) {
return NULL;
}
- $html = $this->get_contents($src_url);
+ $html = Tweeper::getUrlContents($src_url);
if (FALSE === $html) {
return NULL;
}
- $preprocess_html_host_method = 'preprocess_html_' . str_replace(".", "_", $host);
+ $preprocess_html_host_method = 'preprocessHtml' . Tweeper::toUpperCamelCase($host, '.');
if (method_exists($this, $preprocess_html_host_method)) {
$html = call_user_func_array(array($this, $preprocess_html_host_method), array($html));
}
- $xmlDoc = $this->html_to_xml($html, $host);
+ $xmlDoc = $this->htmlToXml($html, $host);
if (NULL === $xmlDoc) {
return NULL;
}
}
return $output;
}
+
}
-function is_cli()
-{
+/**
+ * Check if the script is being run from the command line.
+ */
+function is_cli() {
return (php_sapi_name() === "cli");
}
-function usage($argv)
-{
+/**
+ * Show the script usage.
+ */
+function usage($argv) {
if (is_cli()) {
$usage = "{$argv[0]} [-e|-h|--help] <src_url>\n";
- } else {
+ }
+ else {
$usage = htmlentities("{$_SERVER['SCRIPT_NAME']}?src_url=<src_url>&generate_enclosure=<0|1>");
}
return "usage: $usage";
}
-function parse_options_cli($argv, $argc)
-{
+/**
+ * Parse command line options.
+ */
+function parse_options_cli($argv, $argc) {
$options = array(
- 'generate_enclosure' => FALSE
+ 'generate_enclosure' => FALSE,
);
- if ($argc < 2)
+ 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:
- fwrite(STDERR, usage($argv));
- exit(1);
+ case 'e':
+ $options['generate_enclosure'] = TRUE;
+ break;
+
+ case 'h':
+ case 'help':
+ echo usage($argv);
+ exit(0);
+
+ default:
+ fwrite(STDERR, usage($argv));
+ exit(1);
}
}
return $options;
}
-function parse_options_query_string()
-{
+/**
+ * Parse options passed from a query string.
+ */
+function parse_options_query_string() {
$options = array(
- 'generate_enclosure' => FALSE
+ 'generate_enclosure' => FALSE,
);
- if (isset($_GET['src_url']))
+ if (isset($_GET['src_url'])) {
$options['src_url'] = $_GET['src_url'];
+ }
- if (isset($_GET['generate_enclosure']))
+ if (isset($_GET['generate_enclosure'])) {
$options['generate_enclosure'] = $_GET['generate_enclosure'] == 1;
+ }
return $options;
}
-
if (is_cli()) {
$options = parse_options_cli($argv, $argc);
- $ERROR_STREAM = fopen('php://stderr', 'w');
-} else {
+ $error_stream = fopen('php://stderr', 'w');
+}
+else {
$options = parse_options_query_string();
- $ERROR_STREAM = fopen('php://output', 'w');
+ $error_stream = fopen('php://output', 'w');
}
if (!isset($options['src_url'])) {
- fwrite($ERROR_STREAM, usage(is_cli() ? $argv : NULL));
+ fwrite($error_stream, usage(is_cli() ? $argv : NULL));
exit(1);
}
projects / tweeper.git / commitdiff