(r20) InterwikiPlugin < TWiki

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---+!! 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.
-->
<sticky><div style="float:right; background-color:#EBEEF0; margin:0 0 20px 20px; padding: 0 10px 0 10px;">
%TOC{title="Page contents"}%
</div></sticky>
%SHORTDESCRIPTION%

---++ Introduction

The <nop>%TOPIC% links ==ExternalSite:Page== text to external sites based on aliases defined in the %SYSTEMWEB%.InterWikis topic. This plugin is inspired by <nop>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. For example, type =RFC<nop>:2397= to get RFC:2397.
   * Enter ==[<nop>[ExternalSite:Page][any label]]== to specify a custom label.
   * All ==ExternalSite== aliases are defined in the %SYSTEMWEB%.InterWikis topic.
   * Optionally, the ==Page== can be enclosed in single quotes or double quotes. Use quotes if your ==Page== contains spaces or other special characters. Links of quoted pages are URL encoded. Example: ==Photos:"San Francisco Trip 2011"==.
   * Add and edit aliases in %SYSTEMWEB%.InterWikis (or the one specified in the =INTERWIKIPLUGIN_RULESTOPIC= setting).
   * Each entry must be of format: <br />
     ==| 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.
   * %H% For TWiki sites, both the *web* and the *topic* have to be specified: ==<nop>TWikisite:Webname/<nop>SomePage==
      * TWiki:Plugins/InterwikiPlugin or TWiki:Plugins.InterwikiPlugin

---++ <nop>%TOPIC% Settings

This plugin can be configured with preferences settings in [[%LOCALSITEPREFS%]] (site level), a WebPreferences (web level) or in a topic (page level). Do not change the settings here, they are here only to illustrate the default values. To overload, copy the settings to one of the aforementioned topics.

   * Link rules topic name: (default is %SYSTEMWEB%.InterWikis)
      * Set INTERWIKIPLUGIN_RULESTOPIC = InterWikis

   * Inter-link format, with variables:
     | $site | Site alias |
     | $page | Page (part after colon) |
     | $url | Site URL (might contain $page) |
     | $label | Equal to $site:$page |
     | $tooltip | Tooltip message |
      * Set INTERWIKIPLUGIN_INTERLINKFORMAT = <a href="$url" title="$tooltip" class="interwikiLink"><noautolink>$label</noautolink></a>

---++ Plugin Installation Instructions

__%X% 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* ==%TOPIC%.zip== in your TWiki installation directory. Content:
     | *File:* | *Description:* |
     | ==data/TWiki/%TOPIC%.txt== | Plugin topic |
     | ==data/TWiki/InterWikis.txt== | Link rules topic for inter-site links |
     | ==lib/TWiki/Plugins/%TOPIC%.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

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

|  Plugin Author: | TWiki:Main/AndreaSterbini, TWiki:Main/PeterThoeny |
|  Copyright: | &copy; 2001-2009 Andrea Sterbini,%BR% &copy; 2001-2011 Peter Thoeny ([[http://www.twiki.net/][Twiki, Inc.]]),%BR% &copy; 2001-2011 TWiki:TWiki/TWikiContributor |
|  License: | GPL ([[http://www.gnu.org/copyleft/gpl.html][GNU General Public License]]) |
|  Plugin Version: | 21898 (2011-08-20) |
|  Change History: | <!-- versions below in reverse order -->&nbsp; |
|  2010-08-04: | TWikibug:Item6786: Fix for TWiki.org specific link fix no longer working as implemented in Item6731 - bug was introduced by Item6731 -- TWiki:Main.PeterThoeny |
|  2010-06-06: | TWikibug:Item6701: Adding TWikisvn link rule -- TWiki:Main.PeterThoeny |
|  2010-05-25: | TWikibug:Item6731: Small code fixes; documentation of Timothe's enhancements -- TWiki:Main.PeterThoeny |
|  2011-05-25: | TWikibug:Item6731: Allow quotes in page pattern, and URL-encode quoted page patterns -- TWiki:Main.TimotheLitt |
|  2010-07-12: | TWikibug:Item6521 - add ~ and % to allowed characters in page part of Site:page link |
|  2010-06-23: | TWikibug:Item6503 - fix TWiki.org specific !TWiki:Web.Topic interwiki links to have .../view/Web/Topic type URLs |
|  2010-05-15: | TWikibug:Item6433 - doc improvements; replacing TWIKIWEB with SYSTEMWEB |
|  28 Feb 2009: | 17851 - TWikibug:Item5025 - Added === and =&amp;= to page regex, allowing links such as =Site:ID=1234&amp;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 =[<nop>[Site:Page][label]]= Interwiki links (PTh); use TWiki::Func interface for <nop>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 |
|  [[TWiki:Plugins/Benchmark][Benchmarks]]: | %SYSTEMWEB%.GoodStyle 100%, %SYSTEMWEB%.FormattedSearch 98%, %TOPIC% 98% |
|  Plugin Home: | http://TWiki.org/cgi-bin/view/Plugins/%TOPIC% |
|  Feedback: | http://TWiki.org/cgi-bin/view/Plugins/%TOPIC%Dev |
|  Appraisal: | http://TWiki.org/cgi-bin/view/Plugins/%TOPIC%Appraisal |

__Related Topics:__ %SYSTEMWEB%.TWikiPlugins, %SYSTEMWEB%.DeveloperDocumentationCategory, %SYSTEMWEB%.AdminDocumentationCategory, %SYSTEMWEB%.TWikiPreferences, %SYSTEMWEB%.InterWikis
Topic revision: r20 - 2011-08-05 - TWikiContributor
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