Daya Bay Reactor Neutrino Experiment TWiki > HeadlinesPlugin Daya Bay webs:
Public | 中文 | Internal | Help

Log In or Register

Headlines Plugin

Show headline news in TWiki pages based on RSS and ATOM news feeds from external sites

Description

This plugin displays RSS and ATOM feeds from news sites. Use it to build news portals that show headline news.

Notes:

Syntax Rules

%HEADLINES{"..."}%

Parameter Explanation Default
"..." Source of RSS or ATOM feed; this can be an url (starting with http) or a web.topic location for internal feeds None; is required
href="..." (Alternative to above) N/A
refresh="60" Refresh rate in minutes for caching feed; "0" for no caching Global REFRESH setting
limit="12" Maximum number of items shown Global LIMIT setting
header="..." Header. May include these variables:
- $channeltitle, $title: title of channel (channel.title)
- $channellink, $link: link of channel (channel.link)
- $channeldescription, $description: description (channel.description)
- $channeldate, $date: publication date of the channel (channel.pubDate)
- $rights: copyrights of the channel (channel.copyright)
- $imagetitle: title text for site (image.title)
- $imagelink: link for site (image.link)
- $imageurl: URL of image (image.url)
- $imagedescription: description of image (image.description)
Global HEADER setting
format="..." Format of one item. May include these variables:
- $title: news item title (item.title)
- $link: news item link (item.link)
- $description: news item description (item.description)
- $date: the publication date (item.pubDate, item.date)
- $category: the article category (item.category)
Global FORMAT setting
touch="..." Touch (edit/save) topics if the feed has updates. Specify a comma-space delimited list of TopicNames or Web.TopicNames, such as "%TOPIC%, NewsLetter". Useful to send out newsletter using MailerContrib, showing new feeds since last newsletter. To update feeds, visit topics with feeds in regular intervals (using cron with wget or the like). N/A

The header and format parameters might also use variables rendering the dc, image and content namespace information. Note, that only bits of interest have been implemented so far and those namespaces might not be implemented fully yet.

Rendering the dc namespace

The following variables are extracting the dc namespace info, that could be used in header and format. Note that some of the variables are already used above. This is done by purpose to use different feeds with the same formatting parameters. If there's a conflict the non-dc tags have higher precedence, i.e. a <title> content </title> is preferred over <dc:title> content </dc:title>.

Rendering the image namespace

An image:item is converted into an <img> tag using the following mappings:

Rendering the content namespace

The variable $content is referring to the <content:encoding> content </content:encoding>.

Examples

Slashdot News

Write

%HEADLINES{ "http://slashdot.org/slashdot.rdf" 
  header="*[[$link][$title]]:* $description" 
  format="$t* [[$link][$title]]"
  limit="4"
}%
to get the latest Slashdot news as a bullet list format:

HeadlinesPlugin ERROR: 500 SSL negotiation failed:

Wired Enterprise Feed

Write

%HEADLINES{ "http://feeds.wired.com/wiredenterprise/" limit="3" }%

to get the latest postings on the Wired.com feed on enterprise:

HeadlinesPlugin ERROR: 500 SSL negotiation failed:

Plugin Settings

Plugin settings are stored as preferences settings. Do not change the settings here, they are here only for illustration purposes showing the default values. Define the settings in Public.TWikiPreferences. For example, to customize the HEADLINESPLUGIN_USERAGENTNAME setting, add a * Set HEADLINESPLUGIN_USERAGENTNAME = ... bullet in Public.TWikiPreferences.

      * Set HEADLINESPLUGIN_HEADER = <div class="headlinesChannel"><div class="headlinesLogo"><img src="$imageurl" alt="$imagetitle" border="0" />%BR%</div><div class="headlinesTitle">$n---+!! <a href="$link">$title</a></div><div class="headlinesDate">$date</div><div class="headlinesDescription">$description</div><div class="headlinesRight">$rights</div></div>

      * Set HEADLINESPLUGIN_FORMAT = <div class="headlinesArticle"><div class="headlinesTitle"><a href="$link">$title</a></div>$n<span class="headlinesDate">$date</span> <span class="headlinesCreator"> $creator</span> <span class="headlinesSubject"> $subject </span>$n<div class="headlinesText"> $description</div></div>

Style Sheets

The default HEADER and FORMAT settings use the following styles. See the style.css file defining the default CSS properties (indentation illustrates enclosure).

Plugin Installation Instructions

This is a pre-installed plugin. TWiki administrators can upgrade the plugin as needed on the TWiki server.

Show details toggleopen.gif Hide details toggleclose.gif

Note: You do not need to install anything on the browser to use this plugin. The following instructions are for the administrator who installs the plugin on the TWiki server.

Plugin Info

Plugin Author: TWiki:Main.PeterThoeny, TWiki:Main.MichaelDaum
Copyright: © 2002-2013 Peter Thoeny, TWiki.org External link mark
© 2005-2007 Michael Daum wikiring.de
License: GPL (GNU General Public License External link mark)
Plugin Version: 2013-11-18
Show Change History toggleopen.gif Hide Change History toggleclose.gif
2013-11-18: TWikibug:Item7385: Encode "[" and "]" to avoid problems with TWiki [[...][...]] links; code-refactor to use registerTagHandler and OO style.
2013-02-16: TWikibug:Item7091: Use TWISTY in installation instructions section and change history
2013-01-29: TWikibug:Item7131: HeadlinesPlugin doesn't match pattern in multiple lines.
2012-12-10: TWikibug:Item7070: HeadlinesPlugin doesn't support multiple disks.
2012-11-13: TWikibug:Item7016: Restore changes for earlier versions with LWP
2012-11-13: TWikibug:Item7020: Categorize TWiki Variable
2012-10-31: TWikibug:Item7016: Utilize <guid> value when it is available
2012-09-05: TWikibug:Item6837: Doc fixes
2011-07-17: TWikibug:Item6764: Add VarHEADLINES variable documentation; doc improvements; setting NO_PREFS_IN_TOPIC
2011-07-08: TWikibug:Item6725: Change global package variables from "use vars" to "our"
2010-05-16: TWikibug:Item6433: More doc improvements
2010-04-25: TWikibug:Item6433: Doc fix: Changing TWIKIWEB to SYSTEMWEB
2010-02-27: TWikibug:Item6313: Fixed bug in ATOM feed with <link ...></link> instead of <link ... /> -- Peter Thoeny
2009-09-30: fixed bug in lastBuildDate of feeds affecting touch parameter functionality -- Peter Thoeny
2009-08-29: added touch parameter -- Peter Thoeny
12 Feb 2009: {PROXY}{HOST} supports domain with and without protocol -- Peter Thoeny
06 Feb 2009: added {PROXY}{SkipProxyForDomains} configure setting, added USERAGENTNAME plugin setting -- Peter Thoeny
11 Dec 2008: added {PROXY}{HOST} and {PROXY}{PORT} configure settings -- Peter Thoeny
13 Sep 2007: fixed parsing of content:encoded
23 Jul 2006: improved atom parser; if a posting has no title default to 'Untitled'
26 Apr 2006: added lazy compilation
10 Feb 2006: packaged using the TWiki:Plugins/BuildContrib; minor fixes
03 Feb 2006: off-by-one: limit="n" returned n+1 articles; make FORMAT and HEADER format strings more robust
23 Jan 2006: released v2.00
05 Dec 2005: internal feed urls must be absolute
02 Dec 2005: added web.topic shorthand for internal feeds
29 Nov 2005: fixed CDATA handling
21 Nov 2005: added ATOM support; extended RSS support; added dublin core support; added content support; optionally using LWP to fetch feeds to follow redirections; corrected CPAN dependencies ; recoding special chars from html integer to entity encoding to increase browser compatibility; added css support; use getWorkArea() if available
11 May 2005: TWiki:Main.WillNorris: added DevelopBranch compatability
31 Oct 2004: Fixed taint issue by TWiki:Main.AdrianWeiler; small performance improvement
29 Oct 2004: Fixed issue of external caching if mod_perl or SpeedyCGI is used
02 Aug 2002: Implemented caching of feeds, thanks to TWiki:Main/RobDuarte
11 Jun 2002: Initial version (V1.000)
Perl Version: 5.8
Plugin Benchmark: GoodStyle 100%, FormattedSearch 99.5%, HeadlinesPlugin 94%
Plugin Home: http://TWiki.org/cgi-bin/view/Plugins/HeadlinesPlugin
Feedback: http://TWiki.org/cgi-bin/view/Plugins/HeadlinesPluginDev
Appraisal: http://TWiki.org/cgi-bin/view/Plugins/HeadlinesPluginAppraisal

Related Topics: VarHEADLINES, TWikiPlugins, AdminDocumentationCategory, TWikiPreferences



Revision: r9 - 2013-11-19 - 14:11:46 - TWikiContributor

Copyright © 1999-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding Daya Bay? Send feedback
Note: Please contribute updates to this topic on TWiki.org at TWiki:TWiki.HeadlinesPlugin.