bundle magpierss (w. fixed for http digest auth Snoopy)
Andrew Dolgov
18 years ago
parent
90ac84dff8
commit
19dee1dcc8
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kellan <kellan@protest.net>
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NAME
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MagpieRSS - a simple RSS integration tool
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SYNOPSIS
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require_once(rss_fetch.inc);
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$url = $_GET['url'];
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$rss = fetch_rss( $url );
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echo "Channel Title: " . $rss->channel['title'] . "<p>";
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echo "<ul>";
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foreach ($rss->items as $item) {
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$href = $item['link'];
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$title = $item['title'];
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echo "<li><a href=$href>$title</a></li>";
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}
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echo "</ul>";
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DESCRIPTION
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MapieRSS is an XML-based RSS parser in PHP. It attempts to be "PHP-like",
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and simple to use.
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Some features include:
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* supports RSS 0.9 - 1.0, with limited RSS 2.0 support
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* supports namespaces, and modules, including mod_content and mod_event
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* open minded [1]
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* simple, functional interface, to object oriented backend parser
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* automatic caching of parsed RSS objects makes its easy to integrate
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* supports conditional GET with Last-Modified, and ETag
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* uses constants for easy override of default behaviour
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* heavily commented
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1. By open minded I mean Magpie will accept any tag it finds in good faith that
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it was supposed to be here. For strict validation, look elsewhere.
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GETTING STARTED
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COPYRIGHT:
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Copyright(c) 2002 kellan@protest.net. All rights reserved.
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This software is released under the GNU General Public License.
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Please read the disclaimer at the top of the Snoopy.class.inc file.
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File diff suppressed because it is too large
Load Diff
@ -1,30 +0,0 @@
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.
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./extlib
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./extlib/Snoopy.class.inc
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./htdocs
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./htdocs/cookbook.html
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./htdocs/index.html
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./scripts
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./scripts/magpie_debug.php
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./scripts/magpie_simple.php
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./scripts/magpie_slashbox.php
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./scripts/README
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./scripts/simple_smarty.php
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./scripts/smarty_plugin
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./scripts/smarty_plugin/modifier.rss_date_parse.php
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./scripts/templates
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./scripts/templates/simple.smarty
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./AUTHORS
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./CHANGES
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./ChangeLog
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./INSTALL
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./NEWS
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./README
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./TROUBLESHOOTING
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./cookbook
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./rss_cache.inc
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./rss_fetch.inc
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./rss_parse.inc
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./rss_utils.inc
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./.empty
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./filelist.txt
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@ -0,0 +1,200 @@
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<?php
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/*
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* Project: MagpieRSS: a simple RSS integration tool
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* File: rss_cache.inc, a simple, rolling(no GC), cache
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* for RSS objects, keyed on URL.
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* Author: Kellan Elliott-McCrea <kellan@protest.net>
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* Version: 0.51
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* License: GPL
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*
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* The lastest version of MagpieRSS can be obtained from:
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* http://magpierss.sourceforge.net
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*
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* For questions, help, comments, discussion, etc., please join the
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* Magpie mailing list:
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* http://lists.sourceforge.net/lists/listinfo/magpierss-general
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*
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*/
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class RSSCache {
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var $BASE_CACHE = './cache'; // where the cache files are stored
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var $MAX_AGE = 3600; // when are files stale, default one hour
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var $ERROR = ""; // accumulate error messages
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function RSSCache ($base='', $age='') {
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if ( $base ) {
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$this->BASE_CACHE = $base;
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}
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if ( $age ) {
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$this->MAX_AGE = $age;
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}
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// attempt to make the cache directory
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if ( ! file_exists( $this->BASE_CACHE ) ) {
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$status = @mkdir( $this->BASE_CACHE, 0755 );
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// if make failed
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if ( ! $status ) {
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$this->error(
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"Cache couldn't make dir '" . $this->BASE_CACHE . "'."
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);
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}
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}
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}
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/*=======================================================================*\
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Function: set
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Purpose: add an item to the cache, keyed on url
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Input: url from wich the rss file was fetched
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Output: true on sucess
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\*=======================================================================*/
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function set ($url, $rss) {
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$this->ERROR = "";
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$cache_file = $this->file_name( $url );
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$fp = @fopen( $cache_file, 'w' );
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if ( ! $fp ) {
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$this->error(
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"Cache unable to open file for writing: $cache_file"
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);
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return 0;
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}
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$data = $this->serialize( $rss );
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fwrite( $fp, $data );
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fclose( $fp );
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return $cache_file;
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}
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/*=======================================================================*\
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Function: get
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Purpose: fetch an item from the cache
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Input: url from wich the rss file was fetched
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Output: cached object on HIT, false on MISS
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\*=======================================================================*/
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function get ($url) {
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$this->ERROR = "";
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$cache_file = $this->file_name( $url );
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if ( ! file_exists( $cache_file ) ) {
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$this->debug(
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"Cache doesn't contain: $url (cache file: $cache_file)"
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);
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return 0;
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}
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$fp = @fopen($cache_file, 'r');
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if ( ! $fp ) {
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$this->error(
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"Failed to open cache file for reading: $cache_file"
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);
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return 0;
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}
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if ($filesize = filesize($cache_file) ) {
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$data = fread( $fp, filesize($cache_file) );
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$rss = $this->unserialize( $data );
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return $rss;
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}
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return 0;
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}
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/*=======================================================================*\
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Function: check_cache
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Purpose: check a url for membership in the cache
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and whether the object is older then MAX_AGE (ie. STALE)
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Input: url from wich the rss file was fetched
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Output: cached object on HIT, false on MISS
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\*=======================================================================*/
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function check_cache ( $url ) {
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$this->ERROR = "";
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$filename = $this->file_name( $url );
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if ( file_exists( $filename ) ) {
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// find how long ago the file was added to the cache
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// and whether that is longer then MAX_AGE
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$mtime = filemtime( $filename );
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$age = time() - $mtime;
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if ( $this->MAX_AGE > $age ) {
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// object exists and is current
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return 'HIT';
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}
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else {
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// object exists but is old
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return 'STALE';
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}
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}
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else {
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// object does not exist
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return 'MISS';
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}
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}
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function cache_age( $cache_key ) {
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$filename = $this->file_name( $url );
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if ( file_exists( $filename ) ) {
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$mtime = filemtime( $filename );
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$age = time() - $mtime;
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return $age;
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}
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else {
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return -1;
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}
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}
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/*=======================================================================*\
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Function: serialize
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\*=======================================================================*/
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function serialize ( $rss ) {
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return serialize( $rss );
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}
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/*=======================================================================*\
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Function: unserialize
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\*=======================================================================*/
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function unserialize ( $data ) {
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return unserialize( $data );
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}
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/*=======================================================================*\
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Function: file_name
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Purpose: map url to location in cache
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Input: url from wich the rss file was fetched
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Output: a file name
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\*=======================================================================*/
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function file_name ($url) {
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$filename = md5( $url );
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return join( DIRECTORY_SEPARATOR, array( $this->BASE_CACHE, $filename ) );
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}
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/*=======================================================================*\
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Function: error
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Purpose: register error
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\*=======================================================================*/
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function error ($errormsg, $lvl=E_USER_WARNING) {
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// append PHP's error message if track_errors enabled
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if ( isset($php_errormsg) ) {
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$errormsg .= " ($php_errormsg)";
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}
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$this->ERROR = $errormsg;
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if ( MAGPIE_DEBUG ) {
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trigger_error( $errormsg, $lvl);
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}
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else {
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error_log( $errormsg, 0);
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}
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}
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function debug ($debugmsg, $lvl=E_USER_NOTICE) {
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if ( MAGPIE_DEBUG ) {
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$this->error("MagpieRSS [debug] $debugmsg", $lvl);
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}
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}
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}
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?>
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@ -0,0 +1,458 @@
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<?php
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/*
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* Project: MagpieRSS: a simple RSS integration tool
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* File: rss_fetch.inc, a simple functional interface
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to fetching and parsing RSS files, via the
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function fetch_rss()
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* Author: Kellan Elliott-McCrea <kellan@protest.net>
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* License: GPL
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*
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* The lastest version of MagpieRSS can be obtained from:
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* http://magpierss.sourceforge.net
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*
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* For questions, help, comments, discussion, etc., please join the
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* Magpie mailing list:
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* magpierss-general@lists.sourceforge.net
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*
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*/
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// Setup MAGPIE_DIR for use on hosts that don't include
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// the current path in include_path.
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// with thanks to rajiv and smarty
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if (!defined('DIR_SEP')) {
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define('DIR_SEP', DIRECTORY_SEPARATOR);
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}
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if (!defined('MAGPIE_DIR')) {
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define('MAGPIE_DIR', dirname(__FILE__) . DIR_SEP);
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}
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require_once( MAGPIE_DIR . 'rss_parse.inc' );
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require_once( MAGPIE_DIR . 'rss_cache.inc' );
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// for including 3rd party libraries
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define('MAGPIE_EXTLIB', MAGPIE_DIR . 'extlib' . DIR_SEP);
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require_once( MAGPIE_EXTLIB . 'Snoopy.class.inc');
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/*
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* CONSTANTS - redefine these in your script to change the
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* behaviour of fetch_rss() currently, most options effect the cache
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*
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* MAGPIE_CACHE_ON - Should Magpie cache parsed RSS objects?
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* For me a built in cache was essential to creating a "PHP-like"
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* feel to Magpie, see rss_cache.inc for rationale
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*
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*
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* MAGPIE_CACHE_DIR - Where should Magpie cache parsed RSS objects?
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* This should be a location that the webserver can write to. If this
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* directory does not already exist Mapie will try to be smart and create
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* it. This will often fail for permissions reasons.
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*
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*
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* MAGPIE_CACHE_AGE - How long to store cached RSS objects? In seconds.
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*
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*
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* MAGPIE_CACHE_FRESH_ONLY - If remote fetch fails, throw error
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* instead of returning stale object?
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*
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* MAGPIE_DEBUG - Display debugging notices?
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*
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*/
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/*=======================================================================*\
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Function: fetch_rss:
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Purpose: return RSS object for the give url
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maintain the cache
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Input: url of RSS file
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Output: parsed RSS object (see rss_parse.inc)
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NOTES ON CACHEING:
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If caching is on (MAGPIE_CACHE_ON) fetch_rss will first check the cache.
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NOTES ON RETRIEVING REMOTE FILES:
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If conditional gets are on (MAGPIE_CONDITIONAL_GET_ON) fetch_rss will
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return a cached object, and touch the cache object upon recieving a
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304.
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NOTES ON FAILED REQUESTS:
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If there is an HTTP error while fetching an RSS object, the cached
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version will be return, if it exists (and if MAGPIE_CACHE_FRESH_ONLY is off)
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\*=======================================================================*/
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define('MAGPIE_VERSION', '0.72');
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$MAGPIE_ERROR = "";
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function fetch_rss ($url) {
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// initialize constants
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init();
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if ( !isset($url) ) {
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error("fetch_rss called without a url");
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return false;
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}
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// if cache is disabled
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if ( !MAGPIE_CACHE_ON ) {
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// fetch file, and parse it
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$resp = _fetch_remote_file( $url );
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if ( is_success( $resp->status ) ) {
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return _response_to_rss( $resp );
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}
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else {
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error("Failed to fetch $url and cache is off");
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return false;
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}
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}
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// else cache is ON
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else {
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// Flow
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// 1. check cache
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// 2. if there is a hit, make sure its fresh
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// 3. if cached obj fails freshness check, fetch remote
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// 4. if remote fails, return stale object, or error
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$cache = new RSSCache( MAGPIE_CACHE_DIR, MAGPIE_CACHE_AGE );
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if (MAGPIE_DEBUG and $cache->ERROR) {
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debug($cache->ERROR, E_USER_WARNING);
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}
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$cache_status = 0; // response of check_cache
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$request_headers = array(); // HTTP headers to send with fetch
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$rss = 0; // parsed RSS object
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$errormsg = 0; // errors, if any
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// store parsed XML by desired output encoding
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// as character munging happens at parse time
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$cache_key = $url . MAGPIE_OUTPUT_ENCODING;
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if (!$cache->ERROR) {
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// return cache HIT, MISS, or STALE
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$cache_status = $cache->check_cache( $cache_key);
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}
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// if object cached, and cache is fresh, return cached obj
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if ( $cache_status == 'HIT' ) {
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$rss = $cache->get( $cache_key );
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if ( isset($rss) and $rss ) {
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// should be cache age
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$rss->from_cache = 1;
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if ( MAGPIE_DEBUG > 1) {
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debug("MagpieRSS: Cache HIT", E_USER_NOTICE);
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}
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return $rss;
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}
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}
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// else attempt a conditional get
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// setup headers
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if ( $cache_status == 'STALE' ) {
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$rss = $cache->get( $cache_key );
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if ( $rss and $rss->etag and $rss->last_modified ) {
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$request_headers['If-None-Match'] = $rss->etag;
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$request_headers['If-Last-Modified'] = $rss->last_modified;
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}
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}
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$resp = _fetch_remote_file( $url, $request_headers );
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if (isset($resp) and $resp) {
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if ($resp->status == '304' ) {
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// we have the most current copy
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if ( MAGPIE_DEBUG > 1) {
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debug("Got 304 for $url");
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}
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// reset cache on 304 (at minutillo insistent prodding)
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$cache->set($cache_key, $rss);
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return $rss;
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}
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elseif ( is_success( $resp->status ) ) {
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$rss = _response_to_rss( $resp );
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if ( $rss ) {
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if (MAGPIE_DEBUG > 1) {
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debug("Fetch successful");
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}
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// add object to cache
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$cache->set( $cache_key, $rss );
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return $rss;
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}
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}
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else {
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$errormsg = "Failed to fetch $url ";
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if ( $resp->status == '-100' ) {
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$errormsg .= "(Request timed out after " . MAGPIE_FETCH_TIME_OUT . " seconds)";
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}
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elseif ( $resp->error ) {
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# compensate for Snoopy's annoying habbit to tacking
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# on '\n'
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$http_error = substr($resp->error, 0, -2);
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$errormsg .= "(HTTP Error: $http_error)";
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}
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else {
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$errormsg .= "(HTTP Response: " . $resp->response_code .')';
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}
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}
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}
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else {
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$errormsg = "Unable to retrieve RSS file for unknown reasons.";
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}
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// else fetch failed
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// attempt to return cached object
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if ($rss) {
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if ( MAGPIE_DEBUG ) {
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debug("Returning STALE object for $url");
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}
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return $rss;
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}
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// else we totally failed
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error( $errormsg );
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return false;
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} // end if ( !MAGPIE_CACHE_ON ) {
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} // end fetch_rss()
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/*=======================================================================*\
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Function: error
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Purpose: set MAGPIE_ERROR, and trigger error
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\*=======================================================================*/
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function error ($errormsg, $lvl=E_USER_WARNING) {
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global $MAGPIE_ERROR;
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// append PHP's error message if track_errors enabled
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if ( isset($php_errormsg) ) {
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$errormsg .= " ($php_errormsg)";
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}
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if ( $errormsg ) {
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$errormsg = "MagpieRSS: $errormsg";
|
||||
$MAGPIE_ERROR = $errormsg;
|
||||
trigger_error( $errormsg, $lvl);
|
||||
}
|
||||
}
|
||||
|
||||
function debug ($debugmsg, $lvl=E_USER_NOTICE) {
|
||||
trigger_error("MagpieRSS [debug] $debugmsg", $lvl);
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: magpie_error
|
||||
Purpose: accessor for the magpie error variable
|
||||
\*=======================================================================*/
|
||||
function magpie_error ($errormsg="") {
|
||||
global $MAGPIE_ERROR;
|
||||
|
||||
if ( isset($errormsg) and $errormsg ) {
|
||||
$MAGPIE_ERROR = $errormsg;
|
||||
}
|
||||
|
||||
return $MAGPIE_ERROR;
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: _fetch_remote_file
|
||||
Purpose: retrieve an arbitrary remote file
|
||||
Input: url of the remote file
|
||||
headers to send along with the request (optional)
|
||||
Output: an HTTP response object (see Snoopy.class.inc)
|
||||
\*=======================================================================*/
|
||||
function _fetch_remote_file ($url, $headers = "" ) {
|
||||
// Snoopy is an HTTP client in PHP
|
||||
$client = new Snoopy();
|
||||
$client->agent = MAGPIE_USER_AGENT;
|
||||
$client->read_timeout = MAGPIE_FETCH_TIME_OUT;
|
||||
$client->use_gzip = MAGPIE_USE_GZIP;
|
||||
if (is_array($headers) ) {
|
||||
$client->rawheaders = $headers;
|
||||
}
|
||||
|
||||
@$client->fetch($url);
|
||||
return $client;
|
||||
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: _response_to_rss
|
||||
Purpose: parse an HTTP response object into an RSS object
|
||||
Input: an HTTP response object (see Snoopy)
|
||||
Output: parsed RSS object (see rss_parse)
|
||||
\*=======================================================================*/
|
||||
function _response_to_rss ($resp) {
|
||||
$rss = new MagpieRSS( $resp->results, MAGPIE_OUTPUT_ENCODING, MAGPIE_INPUT_ENCODING, MAGPIE_DETECT_ENCODING );
|
||||
|
||||
// if RSS parsed successfully
|
||||
if ( $rss and !$rss->ERROR) {
|
||||
|
||||
// find Etag, and Last-Modified
|
||||
foreach($resp->headers as $h) {
|
||||
// 2003-03-02 - Nicola Asuni (www.tecnick.com) - fixed bug "Undefined offset: 1"
|
||||
if (strpos($h, ": ")) {
|
||||
list($field, $val) = explode(": ", $h, 2);
|
||||
}
|
||||
else {
|
||||
$field = $h;
|
||||
$val = "";
|
||||
}
|
||||
|
||||
if ( $field == 'ETag' ) {
|
||||
$rss->etag = $val;
|
||||
}
|
||||
|
||||
if ( $field == 'Last-Modified' ) {
|
||||
$rss->last_modified = $val;
|
||||
}
|
||||
}
|
||||
|
||||
return $rss;
|
||||
} // else construct error message
|
||||
else {
|
||||
$errormsg = "Failed to parse RSS file.";
|
||||
|
||||
if ($rss) {
|
||||
$errormsg .= " (" . $rss->ERROR . ")";
|
||||
}
|
||||
error($errormsg);
|
||||
|
||||
return false;
|
||||
} // end if ($rss and !$rss->error)
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: init
|
||||
Purpose: setup constants with default values
|
||||
check for user overrides
|
||||
\*=======================================================================*/
|
||||
function init () {
|
||||
if ( defined('MAGPIE_INITALIZED') ) {
|
||||
return;
|
||||
}
|
||||
else {
|
||||
define('MAGPIE_INITALIZED', true);
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_CACHE_ON') ) {
|
||||
define('MAGPIE_CACHE_ON', true);
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_CACHE_DIR') ) {
|
||||
define('MAGPIE_CACHE_DIR', './cache');
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_CACHE_AGE') ) {
|
||||
define('MAGPIE_CACHE_AGE', 60*60); // one hour
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_CACHE_FRESH_ONLY') ) {
|
||||
define('MAGPIE_CACHE_FRESH_ONLY', false);
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_OUTPUT_ENCODING') ) {
|
||||
define('MAGPIE_OUTPUT_ENCODING', 'ISO-8859-1');
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_INPUT_ENCODING') ) {
|
||||
define('MAGPIE_INPUT_ENCODING', null);
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_DETECT_ENCODING') ) {
|
||||
define('MAGPIE_DETECT_ENCODING', true);
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_DEBUG') ) {
|
||||
define('MAGPIE_DEBUG', 0);
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_USER_AGENT') ) {
|
||||
$ua = 'MagpieRSS/'. MAGPIE_VERSION . ' (+http://magpierss.sf.net';
|
||||
|
||||
if ( MAGPIE_CACHE_ON ) {
|
||||
$ua = $ua . ')';
|
||||
}
|
||||
else {
|
||||
$ua = $ua . '; No cache)';
|
||||
}
|
||||
|
||||
define('MAGPIE_USER_AGENT', $ua);
|
||||
}
|
||||
|
||||
if ( !defined('MAGPIE_FETCH_TIME_OUT') ) {
|
||||
define('MAGPIE_FETCH_TIME_OUT', 5); // 5 second timeout
|
||||
}
|
||||
|
||||
// use gzip encoding to fetch rss files if supported?
|
||||
if ( !defined('MAGPIE_USE_GZIP') ) {
|
||||
define('MAGPIE_USE_GZIP', true);
|
||||
}
|
||||
}
|
||||
|
||||
// NOTE: the following code should really be in Snoopy, or at least
|
||||
// somewhere other then rss_fetch!
|
||||
|
||||
/*=======================================================================*\
|
||||
HTTP STATUS CODE PREDICATES
|
||||
These functions attempt to classify an HTTP status code
|
||||
based on RFC 2616 and RFC 2518.
|
||||
|
||||
All of them take an HTTP status code as input, and return true or false
|
||||
|
||||
All this code is adapted from LWP's HTTP::Status.
|
||||
\*=======================================================================*/
|
||||
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: is_info
|
||||
Purpose: return true if Informational status code
|
||||
\*=======================================================================*/
|
||||
function is_info ($sc) {
|
||||
return $sc >= 100 && $sc < 200;
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: is_success
|
||||
Purpose: return true if Successful status code
|
||||
\*=======================================================================*/
|
||||
function is_success ($sc) {
|
||||
return $sc >= 200 && $sc < 300;
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: is_redirect
|
||||
Purpose: return true if Redirection status code
|
||||
\*=======================================================================*/
|
||||
function is_redirect ($sc) {
|
||||
return $sc >= 300 && $sc < 400;
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: is_error
|
||||
Purpose: return true if Error status code
|
||||
\*=======================================================================*/
|
||||
function is_error ($sc) {
|
||||
return $sc >= 400 && $sc < 600;
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: is_client_error
|
||||
Purpose: return true if Error status code, and its a client error
|
||||
\*=======================================================================*/
|
||||
function is_client_error ($sc) {
|
||||
return $sc >= 400 && $sc < 500;
|
||||
}
|
||||
|
||||
/*=======================================================================*\
|
||||
Function: is_client_error
|
||||
Purpose: return true if Error status code, and its a server error
|
||||
\*=======================================================================*/
|
||||
function is_server_error ($sc) {
|
||||
return $sc >= 500 && $sc < 600;
|
||||
}
|
||||
|
||||
?>
|
||||
@ -0,0 +1,605 @@
|
||||
<?php
|
||||
|
||||
/**
|
||||
* Project: MagpieRSS: a simple RSS integration tool
|
||||
* File: rss_parse.inc - parse an RSS or Atom feed
|
||||
* return as a simple object.
|
||||
*
|
||||
* Handles RSS 0.9x, RSS 2.0, RSS 1.0, and Atom 0.3
|
||||
*
|
||||
* The lastest version of MagpieRSS can be obtained from:
|
||||
* http://magpierss.sourceforge.net
|
||||
*
|
||||
* For questions, help, comments, discussion, etc., please join the
|
||||
* Magpie mailing list:
|
||||
* magpierss-general@lists.sourceforge.net
|
||||
*
|
||||
* @author Kellan Elliott-McCrea <kellan@protest.net>
|
||||
* @version 0.7a
|
||||
* @license GPL
|
||||
*
|
||||
*/
|
||||
|
||||
define('RSS', 'RSS');
|
||||
define('ATOM', 'Atom');
|
||||
|
||||
require_once (MAGPIE_DIR . 'rss_utils.inc');
|
||||
|
||||
/**
|
||||
* Hybrid parser, and object, takes RSS as a string and returns a simple object.
|
||||
*
|
||||
* see: rss_fetch.inc for a simpler interface with integrated caching support
|
||||
*
|
||||
*/
|
||||
class MagpieRSS {
|
||||
var $parser;
|
||||
|
||||
var $current_item = array(); // item currently being parsed
|
||||
var $items = array(); // collection of parsed items
|
||||
var $channel = array(); // hash of channel fields
|
||||
var $textinput = array();
|
||||
var $image = array();
|
||||
var $feed_type;
|
||||
var $feed_version;
|
||||
var $encoding = ''; // output encoding of parsed rss
|
||||
|
||||
var $_source_encoding = ''; // only set if we have to parse xml prolog
|
||||
|
||||
var $ERROR = "";
|
||||
var $WARNING = "";
|
||||
|
||||
// define some constants
|
||||
|
||||
var $_CONTENT_CONSTRUCTS = array('content', 'summary', 'info', 'title', 'tagline', 'copyright');
|
||||
var $_KNOWN_ENCODINGS = array('UTF-8', 'US-ASCII', 'ISO-8859-1');
|
||||
|
||||
// parser variables, useless if you're not a parser, treat as private
|
||||
var $stack = array(); // parser stack
|
||||
var $inchannel = false;
|
||||
var $initem = false;
|
||||
var $incontent = false; // if in Atom <content mode="xml"> field
|
||||
var $intextinput = false;
|
||||
var $inimage = false;
|
||||
var $current_namespace = false;
|
||||
|
||||
|
||||
/**
|
||||
* Set up XML parser, parse source, and return populated RSS object..
|
||||
*
|
||||
* @param string $source string containing the RSS to be parsed
|
||||
*
|
||||
* NOTE: Probably a good idea to leave the encoding options alone unless
|
||||
* you know what you're doing as PHP's character set support is
|
||||
* a little weird.
|
||||
*
|
||||
* NOTE: A lot of this is unnecessary but harmless with PHP5
|
||||
*
|
||||
*
|
||||
* @param string $output_encoding output the parsed RSS in this character
|
||||
* set defaults to ISO-8859-1 as this is PHP's
|
||||
* default.
|
||||
*
|
||||
* NOTE: might be changed to UTF-8 in future
|
||||
* versions.
|
||||
*
|
||||
* @param string $input_encoding the character set of the incoming RSS source.
|
||||
* Leave blank and Magpie will try to figure it
|
||||
* out.
|
||||
*
|
||||
*
|
||||
* @param bool $detect_encoding if false Magpie won't attempt to detect
|
||||
* source encoding. (caveat emptor)
|
||||
*
|
||||
*/
|
||||
function MagpieRSS ($source, $output_encoding='ISO-8859-1',
|
||||
$input_encoding=null, $detect_encoding=true)
|
||||
{
|
||||
# if PHP xml isn't compiled in, die
|
||||
#
|
||||
if (!function_exists('xml_parser_create')) {
|
||||
$this->error( "Failed to load PHP's XML Extension. " .
|
||||
"http://www.php.net/manual/en/ref.xml.php",
|
||||
E_USER_ERROR );
|
||||
}
|
||||
|
||||
list($parser, $source) = $this->create_parser($source,
|
||||
$output_encoding, $input_encoding, $detect_encoding);
|
||||
|
||||
|
||||
if (!is_resource($parser)) {
|
||||
$this->error( "Failed to create an instance of PHP's XML parser. " .
|
||||
"http://www.php.net/manual/en/ref.xml.php",
|
||||
E_USER_ERROR );
|
||||
}
|
||||
|
||||
|
||||
$this->parser = $parser;
|
||||
|
||||
# pass in parser, and a reference to this object
|
||||
# setup handlers
|
||||
#
|
||||
xml_set_object( $this->parser, $this );
|
||||
xml_set_element_handler($this->parser,
|
||||
'feed_start_element', 'feed_end_element' );
|
||||
|
||||
xml_set_character_data_handler( $this->parser, 'feed_cdata' );
|
||||
|
||||
$status = xml_parse( $this->parser, $source );
|
||||
|
||||
if (! $status ) {
|
||||
$errorcode = xml_get_error_code( $this->parser );
|
||||
if ( $errorcode != XML_ERROR_NONE ) {
|
||||
$xml_error = xml_error_string( $errorcode );
|
||||
$error_line = xml_get_current_line_number($this->parser);
|
||||
$error_col = xml_get_current_column_number($this->parser);
|
||||
$errormsg = "$xml_error at line $error_line, column $error_col";
|
||||
|
||||
$this->error( $errormsg );
|
||||
}
|
||||
}
|
||||
|
||||
xml_parser_free( $this->parser );
|
||||
|
||||
$this->normalize();
|
||||
}
|
||||
|
||||
function feed_start_element($p, $element, &$attrs) {
|
||||
$el = $element = strtolower($element);
|
||||
$attrs = array_change_key_case($attrs, CASE_LOWER);
|
||||
|
||||
// check for a namespace, and split if found
|
||||
$ns = false;
|
||||
if ( strpos( $element, ':' ) ) {
|
||||
list($ns, $el) = split( ':', $element, 2);
|
||||
}
|
||||
if ( $ns and $ns != 'rdf' ) {
|
||||
$this->current_namespace = $ns;
|
||||
}
|
||||
|
||||
# if feed type isn't set, then this is first element of feed
|
||||
# identify feed from root element
|
||||
#
|
||||
if (!isset($this->feed_type) ) {
|
||||
if ( $el == 'rdf' ) {
|
||||
$this->feed_type = RSS;
|
||||
$this->feed_version = '1.0';
|
||||
}
|
||||
elseif ( $el == 'rss' ) {
|
||||
$this->feed_type = RSS;
|
||||
$this->feed_version = $attrs['version'];
|
||||
}
|
||||
elseif ( $el == 'feed' ) {
|
||||
$this->feed_type = ATOM;
|
||||
$this->feed_version = $attrs['version'];
|
||||
$this->inchannel = true;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if ( $el == 'channel' )
|
||||
{
|
||||
$this->inchannel = true;
|
||||
}
|
||||
elseif ($el == 'item' or $el == 'entry' )
|
||||
{
|
||||
$this->initem = true;
|
||||
if ( isset($attrs['rdf:about']) ) {
|
||||
$this->current_item['about'] = $attrs['rdf:about'];
|
||||
}
|
||||
}
|
||||
|
||||
// if we're in the default namespace of an RSS feed,
|
||||
// record textinput or image fields
|
||||
elseif (
|
||||
$this->feed_type == RSS and
|
||||
$this->current_namespace == '' and
|
||||
$el == 'textinput' )
|
||||
{
|
||||
$this->intextinput = true;
|
||||
}
|
||||
|
||||
elseif (
|
||||
$this->feed_type == RSS and
|
||||
$this->current_namespace == '' and
|
||||
$el == 'image' )
|
||||
{
|
||||
$this->inimage = true;
|
||||
}
|
||||
|
||||
# handle atom content constructs
|
||||
elseif ( $this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
|
||||
{
|
||||
// avoid clashing w/ RSS mod_content
|
||||
if ($el == 'content' ) {
|
||||
$el = 'atom_content';
|
||||
}
|
||||
|
||||
$this->incontent = $el;
|
||||
|
||||
|
||||
}
|
||||
|
||||
// if inside an Atom content construct (e.g. content or summary) field treat tags as text
|
||||
elseif ($this->feed_type == ATOM and $this->incontent )
|
||||
{
|
||||
// if tags are inlined, then flatten
|
||||
$attrs_str = join(' ',
|
||||
array_map('map_attrs',
|
||||
array_keys($attrs),
|
||||
array_values($attrs) ) );
|
||||
|
||||
$this->append_content( "<$element $attrs_str>" );
|
||||
|
||||
array_unshift( $this->stack, $el );
|
||||
}
|
||||
|
||||
// Atom support many links per containging element.
|
||||
// Magpie treats link elements of type rel='alternate'
|
||||
// as being equivalent to RSS's simple link element.
|
||||
//
|
||||
elseif ($this->feed_type == ATOM and $el == 'link' )
|
||||
{
|
||||
if ( isset($attrs['rel']) and $attrs['rel'] == 'alternate' )
|
||||
{
|
||||
$link_el = 'link';
|
||||
}
|
||||
else {
|
||||
$link_el = 'link_' . $attrs['rel'];
|
||||
}
|
||||
|
||||
$this->append($link_el, $attrs['href']);
|
||||
}
|
||||
// set stack[0] to current element
|
||||
else {
|
||||
array_unshift($this->stack, $el);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
function feed_cdata ($p, $text) {
|
||||
if ($this->feed_type == ATOM and $this->incontent)
|
||||
{
|
||||
$this->append_content( $text );
|
||||
}
|
||||
else {
|
||||
$current_el = join('_', array_reverse($this->stack));
|
||||
$this->append($current_el, $text);
|
||||
}
|
||||
}
|
||||
|
||||
function feed_end_element ($p, $el) {
|
||||
$el = strtolower($el);
|
||||
|
||||
if ( $el == 'item' or $el == 'entry' )
|
||||
{
|
||||
$this->items[] = $this->current_item;
|
||||
$this->current_item = array();
|
||||
$this->initem = false;
|
||||
}
|
||||
elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'textinput' )
|
||||
{
|
||||
$this->intextinput = false;
|
||||
}
|
||||
elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'image' )
|
||||
{
|
||||
$this->inimage = false;
|
||||
}
|
||||
elseif ($this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
|
||||
{
|
||||
$this->incontent = false;
|
||||
}
|
||||
elseif ($el == 'channel' or $el == 'feed' )
|
||||
{
|
||||
$this->inchannel = false;
|
||||
}
|
||||
elseif ($this->feed_type == ATOM and $this->incontent ) {
|
||||
// balance tags properly
|
||||
// note: i don't think this is actually neccessary
|
||||
if ( $this->stack[0] == $el )
|
||||
{
|
||||
$this->append_content("</$el>");
|
||||
}
|
||||
else {
|
||||
$this->append_content("<$el />");
|
||||
}
|
||||
|
||||
array_shift( $this->stack );
|
||||
}
|
||||
else {
|
||||
array_shift( $this->stack );
|
||||
}
|
||||
|
||||
$this->current_namespace = false;
|
||||
}
|
||||
|
||||
function concat (&$str1, $str2="") {
|
||||
if (!isset($str1) ) {
|
||||
$str1="";
|
||||
}
|
||||
$str1 .= $str2;
|
||||
}
|
||||
|
||||
|
||||
|
||||
function append_content($text) {
|
||||
if ( $this->initem ) {
|
||||
$this->concat( $this->current_item[ $this->incontent ], $text );
|
||||
}
|
||||
elseif ( $this->inchannel ) {
|
||||
$this->concat( $this->channel[ $this->incontent ], $text );
|
||||
}
|
||||
}
|
||||
|
||||
// smart append - field and namespace aware
|
||||
function append($el, $text) {
|
||||
if (!$el) {
|
||||
return;
|
||||
}
|
||||
if ( $this->current_namespace )
|
||||
{
|
||||
if ( $this->initem ) {
|
||||
$this->concat(
|
||||
$this->current_item[ $this->current_namespace ][ $el ], $text);
|
||||
}
|
||||
elseif ($this->inchannel) {
|
||||
$this->concat(
|
||||
$this->channel[ $this->current_namespace][ $el ], $text );
|
||||
}
|
||||
elseif ($this->intextinput) {
|
||||
$this->concat(
|
||||
$this->textinput[ $this->current_namespace][ $el ], $text );
|
||||
}
|
||||
elseif ($this->inimage) {
|
||||
$this->concat(
|
||||
$this->image[ $this->current_namespace ][ $el ], $text );
|
||||
}
|
||||
}
|
||||
else {
|
||||
if ( $this->initem ) {
|
||||
$this->concat(
|
||||
$this->current_item[ $el ], $text);
|
||||
}
|
||||
elseif ($this->intextinput) {
|
||||
$this->concat(
|
||||
$this->textinput[ $el ], $text );
|
||||
}
|
||||
elseif ($this->inimage) {
|
||||
$this->concat(
|
||||
$this->image[ $el ], $text );
|
||||
}
|
||||
elseif ($this->inchannel) {
|
||||
$this->concat(
|
||||
$this->channel[ $el ], $text );
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
function normalize () {
|
||||
// if atom populate rss fields
|
||||
if ( $this->is_atom() ) {
|
||||
$this->channel['description'] = $this->channel['tagline'];
|
||||
for ( $i = 0; $i < count($this->items); $i++) {
|
||||
$item = $this->items[$i];
|
||||
if ( isset($item['summary']) )
|
||||
$item['description'] = $item['summary'];
|
||||
if ( isset($item['atom_content']))
|
||||
$item['content']['encoded'] = $item['atom_content'];
|
||||
|
||||
$atom_date = (isset($item['issued']) ) ? $item['issued'] : $item['modified'];
|
||||
if ( $atom_date ) {
|
||||
$epoch = @parse_w3cdtf($atom_date);
|
||||
if ($epoch and $epoch > 0) {
|
||||
$item['date_timestamp'] = $epoch;
|
||||
}
|
||||
}
|
||||
|
||||
$this->items[$i] = $item;
|
||||
}
|
||||
}
|
||||
elseif ( $this->is_rss() ) {
|
||||
$this->channel['tagline'] = $this->channel['description'];
|
||||
for ( $i = 0; $i < count($this->items); $i++) {
|
||||
$item = $this->items[$i];
|
||||
if ( isset($item['description']))
|
||||
$item['summary'] = $item['description'];
|
||||
if ( isset($item['content']['encoded'] ) )
|
||||
$item['atom_content'] = $item['content']['encoded'];
|
||||
|
||||
if ( $this->is_rss() == '1.0' and isset($item['dc']['date']) ) {
|
||||
$epoch = @parse_w3cdtf($item['dc']['date']);
|
||||
if ($epoch and $epoch > 0) {
|
||||
$item['date_timestamp'] = $epoch;
|
||||
}
|
||||
}
|
||||
elseif ( isset($item['pubdate']) ) {
|
||||
$epoch = @strtotime($item['pubdate']);
|
||||
if ($epoch > 0) {
|
||||
$item['date_timestamp'] = $epoch;
|
||||
}
|
||||
}
|
||||
|
||||
$this->items[$i] = $item;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
function is_rss () {
|
||||
if ( $this->feed_type == RSS ) {
|
||||
return $this->feed_version;
|
||||
}
|
||||
else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
function is_atom() {
|
||||
if ( $this->feed_type == ATOM ) {
|
||||
return $this->feed_version;
|
||||
}
|
||||
else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* return XML parser, and possibly re-encoded source
|
||||
*
|
||||
*/
|
||||
function create_parser($source, $out_enc, $in_enc, $detect) {
|
||||
if ( substr(phpversion(),0,1) == 5) {
|
||||
$parser = $this->php5_create_parser($in_enc, $detect);
|
||||
}
|
||||
else {
|
||||
list($parser, $source) = $this->php4_create_parser($source, $in_enc, $detect);
|
||||
}
|
||||
if ($out_enc) {
|
||||
$this->encoding = $out_enc;
|
||||
xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, $out_enc);
|
||||
}
|
||||
|
||||
return array($parser, $source);
|
||||
}
|
||||
|
||||
/**
|
||||
* Instantiate an XML parser under PHP5
|
||||
*
|
||||
* PHP5 will do a fine job of detecting input encoding
|
||||
* if passed an empty string as the encoding.
|
||||
*
|
||||
* All hail libxml2!
|
||||
*
|
||||
*/
|
||||
function php5_create_parser($in_enc, $detect) {
|
||||
// by default php5 does a fine job of detecting input encodings
|
||||
if(!$detect && $in_enc) {
|
||||
return xml_parser_create($in_enc);
|
||||
}
|
||||
else {
|
||||
return xml_parser_create('');
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Instaniate an XML parser under PHP4
|
||||
*
|
||||
* Unfortunately PHP4's support for character encodings
|
||||
* and especially XML and character encodings sucks. As
|
||||
* long as the documents you parse only contain characters
|
||||
* from the ISO-8859-1 character set (a superset of ASCII,
|
||||
* and a subset of UTF-8) you're fine. However once you
|
||||
* step out of that comfy little world things get mad, bad,
|
||||
* and dangerous to know.
|
||||
*
|
||||
* The following code is based on SJM's work with FoF
|
||||
* @see http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss
|
||||
*
|
||||
*/
|
||||
function php4_create_parser($source, $in_enc, $detect) {
|
||||
if ( !$detect ) {
|
||||
return array(xml_parser_create($in_enc), $source);
|
||||
}
|
||||
|
||||
if (!$in_enc) {
|
||||
if (preg_match('/<?xml.*encoding=[\'"](.*?)[\'"].*?>/m', $source, $m)) {
|
||||
$in_enc = strtoupper($m[1]);
|
||||
$this->source_encoding = $in_enc;
|
||||
}
|
||||
else {
|
||||
$in_enc = 'UTF-8';
|
||||
}
|
||||
}
|
||||
|
||||
if ($this->known_encoding($in_enc)) {
|
||||
return array(xml_parser_create($in_enc), $source);
|
||||
}
|
||||
|
||||
// the dectected encoding is not one of the simple encodings PHP knows
|
||||
|
||||
// attempt to use the iconv extension to
|
||||
// cast the XML to a known encoding
|
||||
// @see http://php.net/iconv
|
||||
|
||||
if (function_exists('iconv')) {
|
||||
$encoded_source = iconv($in_enc,'UTF-8', $source);
|
||||
if ($encoded_source) {
|
||||
return array(xml_parser_create('UTF-8'), $encoded_source);
|
||||
}
|
||||
}
|
||||
|
||||
// iconv didn't work, try mb_convert_encoding
|
||||
// @see http://php.net/mbstring
|
||||
if(function_exists('mb_convert_encoding')) {
|
||||
$encoded_source = mb_convert_encoding($source, 'UTF-8', $in_enc );
|
||||
if ($encoded_source) {
|
||||
return array(xml_parser_create('UTF-8'), $encoded_source);
|
||||
}
|
||||
}
|
||||
|
||||
// else
|
||||
$this->error("Feed is in an unsupported character encoding. ($in_enc) " .
|
||||
"You may see strange artifacts, and mangled characters.",
|
||||
E_USER_NOTICE);
|
||||
|
||||
return array(xml_parser_create(), $source);
|
||||
}
|
||||
|
||||
function known_encoding($enc) {
|
||||
$enc = strtoupper($enc);
|
||||
if ( in_array($enc, $this->_KNOWN_ENCODINGS) ) {
|
||||
return $enc;
|
||||
}
|
||||
else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
function error ($errormsg, $lvl=E_USER_WARNING) {
|
||||
// append PHP's error message if track_errors enabled
|
||||
if ( isset($php_errormsg) ) {
|
||||
$errormsg .= " ($php_errormsg)";
|
||||
}
|
||||
if ( MAGPIE_DEBUG ) {
|
||||
trigger_error( $errormsg, $lvl);
|
||||
}
|
||||
else {
|
||||
error_log( $errormsg, 0);
|
||||
}
|
||||
|
||||
$notices = E_USER_NOTICE|E_NOTICE;
|
||||
if ( $lvl&$notices ) {
|
||||
$this->WARNING = $errormsg;
|
||||
} else {
|
||||
$this->ERROR = $errormsg;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
} // end class RSS
|
||||
|
||||
function map_attrs($k, $v) {
|
||||
return "$k=\"$v\"";
|
||||
}
|
||||
|
||||
// patch to support medieval versions of PHP4.1.x,
|
||||
// courtesy, Ryan Currie, ryan@digibliss.com
|
||||
|
||||
if (!function_exists('array_change_key_case')) {
|
||||
define("CASE_UPPER",1);
|
||||
define("CASE_LOWER",0);
|
||||
|
||||
|
||||
function array_change_key_case($array,$case=CASE_LOWER) {
|
||||
if ($case=CASE_LOWER) $cmd=strtolower;
|
||||
elseif ($case=CASE_UPPER) $cmd=strtoupper;
|
||||
foreach($array as $key=>$value) {
|
||||
$output[$cmd($key)]=$value;
|
||||
}
|
||||
return $output;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
?>
|
||||
@ -0,0 +1,67 @@
|
||||
<?php
|
||||
/*
|
||||
* Project: MagpieRSS: a simple RSS integration tool
|
||||
* File: rss_utils.inc, utility methods for working with RSS
|
||||
* Author: Kellan Elliott-McCrea <kellan@protest.net>
|
||||
* Version: 0.51
|
||||
* License: GPL
|
||||
*
|
||||
* The lastest version of MagpieRSS can be obtained from:
|
||||
* http://magpierss.sourceforge.net
|
||||
*
|
||||
* For questions, help, comments, discussion, etc., please join the
|
||||
* Magpie mailing list:
|
||||
* magpierss-general@lists.sourceforge.net
|
||||
*/
|
||||
|
||||
|
||||
/*======================================================================*\
|
||||
Function: parse_w3cdtf
|
||||
Purpose: parse a W3CDTF date into unix epoch
|
||||
|
||||
NOTE: http://www.w3.org/TR/NOTE-datetime
|
||||
\*======================================================================*/
|
||||
|
||||
function parse_w3cdtf ( $date_str ) {
|
||||
|
||||
# regex to match wc3dtf
|
||||
$pat = "/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})(:(\d{2}))?(?:([-+])(\d{2}):?(\d{2})|(Z))?/";
|
||||
|
||||
if ( preg_match( $pat, $date_str, $match ) ) {
|
||||
list( $year, $month, $day, $hours, $minutes, $seconds) =
|
||||
array( $match[1], $match[2], $match[3], $match[4], $match[5], $match[6]);
|
||||
|
||||
# calc epoch for current date assuming GMT
|
||||
$epoch = gmmktime( $hours, $minutes, $seconds, $month, $day, $year);
|
||||
|
||||
$offset = 0;
|
||||
if ( $match[10] == 'Z' ) {
|
||||
# zulu time, aka GMT
|
||||
}
|
||||
else {
|
||||
list( $tz_mod, $tz_hour, $tz_min ) =
|
||||
array( $match[8], $match[9], $match[10]);
|
||||
|
||||
# zero out the variables
|
||||
if ( ! $tz_hour ) { $tz_hour = 0; }
|
||||
if ( ! $tz_min ) { $tz_min = 0; }
|
||||
|
||||
$offset_secs = (($tz_hour*60)+$tz_min)*60;
|
||||
|
||||
# is timezone ahead of GMT? then subtract offset
|
||||
#
|
||||
if ( $tz_mod == '+' ) {
|
||||
$offset_secs = $offset_secs * -1;
|
||||
}
|
||||
|
||||
$offset = $offset_secs;
|
||||
}
|
||||
$epoch = $epoch + $offset;
|
||||
return $epoch;
|
||||
}
|
||||
else {
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
?>
|
||||
Loading…
Reference in New Issue