Headlines Plugin

Description

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

Note: Syndic8.com ( http://www.syndic8.com/ ) is a good site listing many RSS feeds.

Syntax Rules

%HEADLINES{"..."}%

Parameter Explanation Default
"..." source of RSS 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. Can 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. Can 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

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. Nnote, that some of the variables are already used above. This is done by purpose to use different feeds with the same formating parameters. If there's a conflict the non-dc tags have higher precedence, i.e. a <title> content </title> is prefered over <dc:title> content </dc:title> .
  • $title: channel/article title (dc:title)
  • $creator: channel creator (dc:creator)
  • $subject: subject text; this will also add an image according to the subject hash list, see above (dc:subject)
  • $description: ... (dc:description)
  • $publisher: the channel/article publisher (dc:publisher)
  • $contributor: ... (dc:contributor)
  • $date: ... (dc:date)
  • $type: ... (dc:type)
  • $format: ... (dc:format)
  • $identifier: ... (dc:identifier)
  • $source: ... (dc:source)
  • $language: ... (dc:language)
  • $relation: ... (dc:relation)
  • $coverage: ... (dc: coverage)
  • $rights: ... (dc: rights)

Rendering the image namespace

An image:item is converted into an <img> tag using the following mappings:
  • src: image url (rdf:about attribute of the image.item tag)
  • alt: image title (title)
  • width: image width (image:width)
  • height: image height image:height)

Rendering the content namespace

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

Examples

Write

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

Write

%HEADLINES{"http://www.business-opportunities.biz/feed" limit="3"}%

to get the latest postings on the "Business Opportunities" weblog:

Thu, 20 Nov 2008 17:10:45 +0000
Opportunities, news, and links for small business entrepreneurs
Thu, 20 Nov 2008 17:10:45 +0000 Rich


Forbes:

Attention, online shoppers! This may be the last holiday season you can dodge sales taxes by buying presents on the Web. State legislators, retailers and lawyers say 2009 may be the year Internet taxes finally come to pass.

The idea, which would levy sales tax on most goods bought online, has been tossed around for nearly a decade. A perfect storm of factors, including record state budget deficits, a new Congress and continued e-commerce growth, appear likely to rekindle the issue. Experts say that cash-strapped states view this revenue, estimated to be several billions of dollars, as money left on the table.

“States are coming up with huge deficits and looking for places to make money,” says Eric Menhart, the principal of CyberLaw, a Rockville, Md.-based law firm that concentrates on technology legal issues. “All of a sudden, Internet taxation appears a lot more viable.”

Spotting an opportunity, legislators and other proponents of Internet taxation are renewing their efforts. Scott Peterson, executive director of the Streamlined Sales Tax Governing Board, a group that oversees states’ efforts to simplify and modernize sales tax issues, says legislators from Florida, Illinois, Massachusetts, Texas and Virginia, among others, have recently contacted him about the issue.

The plan: to reintroduce legislation as early as January when the new Congress takes office. The legislative route is necessary because the Supreme Court ruled in the 1990s that states can’t require out-of-state retailers to collect sales tax on online sales. Proponents believe that making their case to Congress would be faster and more practical than wending their way through the courts.

Photo by enimal.


Thu, 20 Nov 2008 16:09:08 +0000 Rich


WIRED:

In the fall of 1972, when David Galenson was a senior economics major at Harvard, he took what he describes as a ''gut'' course in 17th-century Dutch art. On the first day of class, the professor displayed a stunning image of a Renaissance Madonna and child. ''Pablo Picasso did this copy of a Raphael drawing when he was 17 years old,'' the professor told the students. ''What have you people done lately?''

It's a question we all ask ourselves. What have we done lately? It rattles us each birthday. It surfaces whenever an upstart twentysomething pens a game-changing novel or a 30-year-old tech entrepreneur becomes a billionaire.

The question nagged at Galenson for years. In graduate school, he watched brash colleagues write dissertations that earned them quick acclaim and instant tenure, while he sat in the library meticulously tabulating 17th- and 18th-century indentured-servitude records.

Now, however, Galenson might have done something at last, something that could provide hope for legions of late bloomers everywhere. Beavering away in his sunny second-floor office on campus, he has scoured the records of art auctions, counted entries in poetry anthologies, tallied images in art history textbooks - and then sliced and diced the numbers with his econometric ginsu knife. Applying the fiercely analytic, quantitative tools of modern economics, he has reverse engineered ingenuity to reveal the source code of the creative mind.

What he has found is that genius - whether in art or architecture or even business - is not the sole province of 17-year-old Picassos and 22-year-old Andreessens. Instead, it comes in two very different forms, embodied by two very different types of people.

''Conceptual innovators,'' as Galenson calls them, make bold, dramatic leaps in their disciplines. They do their breakthrough work when they are young. Think Edvard Munch, Herman Melville, and Orson Welles. They make the rest of us feel like also-rans.

Then there's a second character type, someone who's just as significant but trudging by comparison. Galenson calls this group ''experimental innovators.'' Geniuses like Auguste Rodin, Mark Twain, and Alfred Hitchcock proceed by a lifetime of trial and error and thus do their important work much later in their careers. Galenson maintains that this duality - conceptualists are from Mars, experimentalists are from Venus - is the core of the creative process. And it applies to virtually every field of intellectual endeavor, from painters and poets to economists.

Read more.

Photo by sfjalar.


Thu, 20 Nov 2008 15:08:22 +0000 Rich


Inside CRM:

With the economy struggling, every business is trying to cut costs to make ends meet. Small businesses, which have fewer resources, especially feel the burn.

Not to fear. We've come up with a mega-list of ways to trim the fat off your enterprise so you don't become a casualty of the latest economic downturn.

    • Switch to open-source software

    • Reduce your variable expenses.

    • Take advantage of member rewards.

    • Communicate on online forums and message boards.

    • Re-evaluate your insurance coverage and policy costs.

    • Shop for discounted fares online.

    • Get an “executive suite.” You don’t have to run your office full-time from an executive suite to benefit from its services. Many home-based entrepreneurs find executive suites meet a range of needs, including access to a private mailbox and a receptionist to answer or forward calls to your home office.

For 71 More Ways for Your Small Business to Save Money in this Economy,go here.

Photo by ShellyS.


Plugin Settings

Plugin settings are stored as preferences variables. To reference a plugin setting write %<plugin>_<setting>%, for example, %HEADLINES_SHORTDESCRIPTION%

  • One line description, shown in the TextFormattingRules topic:
    • Set SHORTDESCRIPTION = Build news portals that show headline news based on RSS news feeds from news sites.

  • Refresh rate in minutes for cached feeds. Disable caching: 0, default: 60
    • Set REFRESH = 60

  • Maximum number of items shown. Default: 100
    • Set LIMIT = 100

  • Use LWP::UserAgent, or fallback to TWiki's internal getUrl() method, Default: yes
    • Set USELWPUSERAGENT = yes
  • Timeout fetching a feed using the LWP::UserAgent, Default: 20
    • Set USERAGENTTIMEOUT = 20

  • Default header: (variables are explained in the syntax rules)
      * Set 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>
  • Default format of one item: (variables are explained in the syntax rules)
      * Set 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).

  • headlinesRss: output of the HeadlinesPlugin (div)
    • headlinesChannel: channel header (div)
      • headlinesLogo: channel logo (div)
      • headlinesTitle: channel title (div)
      • headlinesDate: channel date (div)
      • headlinesDescription: channel description (div)
      • headlinesRight: channel copyright (div)
    • headlinesArticle: one news item (div)
      • headlinesTitle: article title (div)
      • headlinesDate: article date (span)
      • headlinesCreator: author of article (span)
      • headlinesSubject: subect category of the article (span)
      • headlineText: article text (div)

Plugin Installation Instructions

  • Download the ZIP file
  • Unzip it in your twiki installation directory. Content:
    File: Description:
    data/TWiki/HeadlinesPlugin.txt plugin topic
    pub/TWiki/HeadlinesPlugin/style.css default css
    lib/TWiki/HeadlinesPlugin.pm plugin perl module
    lib/TWiki/HeadlinesPlugin/Core.pm plugin core
    Check if above examples show a news feed instead of variable.
  • Optionally, run HeadlinesPlugin_installer.pl to automatically check and install other TWiki modules that this module depends on. You can also do this step manually.
  • Alternatively, manually make sure the dependencies listed in the table below are resolved.
    NameVersionDescription
    Digest::MD5>=2.33Required. Download from CPAN:Digest::MD5
    LWP::UserAgent>=5.803Optional. Download from CPAN:LWP::UserAgent

Plugin Info

Plugin Author: TWiki:BlockTaxHome, TWiki:BlockTaxHome
Copyright ©: 2002-2006, Peter Thoeny; 2005-2007, Michael Daum http://wikiring.de
License: GPL (GNU General Public License)
Plugin Version: v2.12
Change History:  
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:BlockTaxHome: added DevelopBranch compatability
31 Oct 2004: Fixed taint issue by TWiki:BlockTaxHome; 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
TWiki:Plugins/Benchmark: GoodStyle 100%, FormattedSearch 99.5%, HeadlinesPlugin 94%
Plugin Home: TWiki:Plugins/HeadlinesPlugin
Feedback: TWiki:Plugins/HeadlinesPluginDev
Appraisal: TWiki:Plugins/HeadlinesPluginAppraisal

-- TWiki:BlockTaxHome - 11 May 2005
-- TWiki:BlockTaxHome - 13 Sep 2007

Topic revision: r2 - 19 Jun 2008 - 11:52:03 - TWikiAdminUser
 
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