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Package TWiki::Func

Official list of stable TWiki functions for Plugin developers

This module defines official functions that Plugins can use to interact with the TWiki engine and content.

Refer to EmptyPlugin and lib/TWiki/Plugins/EmptyPlugin.pm for a template Plugin and documentation on how to write a Plugin.

Plugins should only use functions published in this module. If you use functions in other TWiki libraries you might create a security hole and you will probably need to change your Plugin when you upgrade TWiki.

Deprecated functions will still work in older code, though they should not be called in new Plugins and should be replaced in older Plugins as soon as possible.

The version of the TWiki::Func module is defined by the VERSION number of the TWiki::Plugins module, currently 6.02. This can be shown by the %PLUGINVERSION% TWiki variable, and accessed in code using $TWiki::Plugins::VERSION. The 'Since' field in the function documentation refers to $TWiki::Plugins::VERSION.

Notes on use of $TWiki::Plugins::VERSION (from 1.2 forwards):

  • If the major version (e.g. 1.) is the same then any plugin coded to use any earlier revision of the 1. API will still work. No function has been removed from the interface, nor has any API published in that version changed in such a way as to require plugins to be recoded.
  • If the minor version (e.g. 1.1) is incremented there may be changes in the API that may help improve the coding of some plugins - for example, new interfaces giving access to previously hidden core functions. In addition, deprecation of functions in the interface trigger a minor version increment. Note that deprecated functions are not removed, they are merely frozen, and plugin authors are recommended to stop using them.
  • Any additional digits in the version number relate to minor changes, such as the addition of parameters to the existing functions, or addition of utility functions that are unlikely to require significant changes to existing plugins.
  • TWiki::Plugins::VERSION also applies to the plugin handlers. The handlers are documented in the EmptyPlugin, and that module indicates what version of TWiki::Plugins::VERSION it relates to.
A full history of the changes to this API can be found at the end of this topic.

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Environment

getSkin( ) -> $skin

Get the skin path, set by the SKIN and COVER preferences variables or the skin and cover CGI parameters

Return: $skin Comma-separated list of skins, e.g. 'gnu,tartan'. Empty string if none.

Since: TWiki::Plugins::VERSION 1.000 (29 Jul 2001)

getUrlHost( ) -> $host

Get protocol, domain and optional port of script URL

Return: