Interwiki Plugin

<--
   Contributions to this TWiki plugin are appreciated. Please update the plugin page
   at http://twiki.org/cgi-bin/view/Plugins/InterwikiPlugin or provide feedback
   at http://twiki.org/cgi-bin/view/Plugins/InterwikiPluginDev.
   If you are a TWiki contributor please update the plugin in the SVN repository.
-->

Introduction

The InterwikiPlugin links ExternalSite:Page text to external sites based on aliases defined in the InterWikis topic. This plugin is inspired by UseMod Wiki's inter-wiki links, http://www.usemod.com/cgi-bin/wiki.pl?InterWiki.

Syntax Rules

• Enter ExternalSite:Page to create a link that points to the Page on the ExternalSite server.
• Enter [[ExternalSite:Page][any label]] to specify a custom label.
• All ExternalSite aliases are defined in the InterWikis topic.
• Add and edit aliases in InterWikis.
• Each entry must be of format:
  | External site alias | URL | Tooltip help text |.
• Site aliases must start with an upper case letter and may contain alphanumeric letters.
• The URL and Tooltip Text may contain optional $page variables; the variable gets expanded to the page name.
• For TWiki sites, both the web and the topic have to be specified: TWikisite:Webname/SomePage
  • TWiki:Plugins/InterwikiPlugin or TWiki:Plugins.InterwikiPlugin

InterwikiPlugin Settings

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

• One-line description, shown in the TextFormattingRules topic:
  • Set SHORTDESCRIPTION = Link ExternalSite:Page text to external sites based on aliases defined in a rules topic

• Link rules topic name: (default is InterWikis)
  • Set RULESTOPIC =

• Inter-link format, with variables:

  $site	Site alias
  $page	Page (part after colon)
  $url	Site URL (might contain $page)
  $label	Equal to $site:$page
  $tooltip	Tooltip message

  • Set INTERLINKFORMAT = $label

Plugin Installation Instructions

Note: This plugin is included in the TWiki distribution package. You do not need to install it unless you want to upgrade to a newer version.

• Download the ZIP file from the TWiki:Plugins web (see below)
• Unzip InterwikiPlugin.zip in your TWiki installation directory. Content:

  File:	Description:
  data/TWiki/InterwikiPlugin.txt	Plugin topic
  data/TWiki/InterWikis.txt	Link rules topic for inter-site links
  lib/TWiki/Plugins/InterwikiPlugin.pm	Plugin Perl module

• Test: If the Plugin is correctly installed, this Wiki:InterWiki link should point to http://c2.com/cgi/wiki?InterWiki topic - try it out.

Plugin Info

Plugin Author:	TWiki:Main/AndreaSterbini, TWiki:Main/PeterThoeny
Copyright:	© 2001-2009 Andrea Sterbini, © 2001-2010 Peter Thoeny (Twiki, Inc.), © 2001-2010 TWiki:TWiki/TWikiContributor
License:	GPL (GNU General Public License)

2010-05-15:	TWikibug:Item6433 - doc improvements; replacing TWIKIWEB with SYSTEMWEB
28 Feb 2009:	17851 - TWikibug:Item5025 - Added = and & to page regex, allowing links such as Site:ID=1234&sel=56
03 Aug 2008:	TWiki 4.2.1 release version
22 Jan 2008:	TWiki 4.2.0 release version
25 Nov 2007:	15752 - TWikibug:Item5006 - Renamed Bugs rule to TWikibug rule (PTh)
13 Aug 2007:	14545 - TWikibug:Item4451 - Added Bugs: rule (TWiki:Main.CrawfordCurrie)
11 Aug 2007:	14538 - Fixed broken ISBN link (TWiki:Main.PeterThoeny)
08 Nov 2006:	11935 - Added css class="interwikiLink" (TWiki:Main.PeterThoeny)
07 Nov 2006:	11924 - Added INTERLINKFORMAT; removed redundant SUPPRESSTOOLTIP; allow @ signs in page part of interwiki link; support single digit page part (TWiki:Main.PeterThoeny)
26 Feb 2005:	1.008 TWiki:Main.CrawfordCurrie cleaned up code and made Dakar-ready
25 Aug 2004:	1.005 TWiki:Main.PeterThoeny updated InterWikis link rules (no code change)
09 Mar 2004:	Internal changes: Use only official TWiki::Func Plugin API; for increased speed, moved Interwiki link handling from outsidePREHandler to startRenderingHandler
16 Feb 2004:	Support [[Site:Page][label]] Interwiki links (PTh); use TWiki::Func interface for I18N regular expressions (Walter Mundt)
18 Jan 2003:	Allow number sign # in Page name (PTh)
31 Aug 2002:	Allow percent sign % in page name (PTh)
27 Jul 2001:	Allow numbers 0-9 in site name
26 Jul 2001:	Fixed alternating missed link bug due to greedy $postfixPattern (fix by Richard Donkin)
14 Jul 2001:	Changed to plug & play
16 Jun 2001:	Made tooltips optional; prevent Module::Sub type of link
12 Jun 2001:	Added optional tool tips (IE only); added the link rules topic name variable; added flexible link patterns; optional $page in URL
10 Jun 2001:	Changed rules topic to table-based syntax
20 Feb 2001:	TWiki:Main.AndreaSterbini, TWiki:Main.PeterThoeny - Initial version
CPAN Dependencies:	none
Other Dependencies:	none
Perl Version:	5.0
Benchmarks:	GoodStyle 100%, FormattedSearch 98%, InterwikiPlugin 98%
Plugin Home:	http://TWiki.org/cgi-bin/view/Plugins/InterwikiPlugin
Feedback:	http://TWiki.org/cgi-bin/view/Plugins/InterwikiPluginDev
Appraisal:	http://TWiki.org/cgi-bin/view/Plugins/InterwikiPluginAppraisal

Related Topics: TWikiPlugins, DeveloperDocumentationCategory, AdminDocumentationCategory, TWikiPreferences, InterWikis