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Diffstat (limited to 'doc/plugins/write.mdwn')
| -rw-r--r-- | doc/plugins/write.mdwn | 52 |
1 files changed, 27 insertions, 25 deletions
diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn index 4fd102bfd..6b49ec58d 100644 --- a/doc/plugins/write.mdwn +++ b/doc/plugins/write.mdwn @@ -46,11 +46,13 @@ being edited. Plugins should, when imported, call `hook()` to hook into ikiwiki's processing. The function uses named parameters, and use varies depending on -the type of hook being registered -- see below. Note that a plugin can call -the function more than once to register multiple hooks. All calls to -`hook()` should be passed a "type" parameter, which gives the type of -hook, a "id" paramter, which should be a unique string for this plugin, and -a "call" parameter, which tells what function to call for the hook. +the type of hook being registered -- see below. A plugin can call +the function more than once to register multiple hooks. + +All calls to `hook()` should be passed a "type" parameter, which gives the +type of hook, a "id" parameter, which should be a unique string for this +plugin, and a "call" parameter, which tells what function to call for the +hook. An optional "last" parameter, if set to a true value, makes the hook run after all other hooks of its type. Useful if the hook depends on some other @@ -99,6 +101,18 @@ built when the wiki is refreshed. The function is passed a reference to an array of pages that will be rebuilt, and can modify the array, either adding or removing files from it. +### scan + + hook(type => "scan", id => "foo", call => \&scan); + +This hook is called early in the process of building the wiki, and is used +as a first pass scan of the page, to collect metadata about the page. It's +mostly used to scan the page for WikiLinks, and add them to `%links`. +Present in IkiWiki 2.40 and later. + +The function is passed named parameters "page" and "content". Its return +value is ignored. + ### filter hook(type => "filter", id => "foo", call => \&filter); @@ -154,23 +168,11 @@ and later. Plugins that implement linkify must also implement a scan hook, that scans for the links on the page and adds them to `%links`. -### scan - - hook(type => "scan", id => "foo", call => \&scan); - -This hook is called early in the process of building the wiki, and is used -as a first pass scan of the page, to collect metadata about the page. It's -mostly used to scan the page for WikiLinks, and add them to `%links`. -Present in IkiWiki 2.40 and later. - -The function is passed named parameters "page" and "content". Its return -value is ignored. - ### htmlize hook(type => "htmlize", id => "ext", call => \&htmlize); -Runs on the raw source of a page and turns it into html. The id parameter +Runs on the source of a page and turns it into html. The id parameter specifies the filename extension that a file must have to be htmlized using this plugin. This is how you can add support for new and exciting markup languages to ikiwiki. @@ -258,9 +260,9 @@ state is loaded, and with no session information. hook(type => "auth", id => "foo", call => \&auth); -This hook can be used to implement a different authentication method than -the standard web form. When a user needs to be authenticated, each registered -auth hook is called in turn, and passed a CGI object and a session object. +This hook can be used to implement an authentication method. When a user +needs to be authenticated, each registered auth hook is called in turn, and +passed a CGI object and a session object. If the hook is able to authenticate the user, it should set the session object's "name" parameter to the authenticated user's name. Note that @@ -331,7 +333,7 @@ called. It can be used to validate the form, but should not display it. hook(type => "savestate", id => "foo", call => \&savestate); -This hook is called wheneven ikiwiki normally saves its state, just before +This hook is called whenever ikiwiki normally saves its state, just before the state is saved. The function can save other state, modify values before they're saved, etc. @@ -339,7 +341,7 @@ they're saved, etc. To import the ikiwiki plugin interface: - use IkiWiki '1.00'; + use IkiWiki '2.00'; This will import several variables and functions into your plugin's namespace. These variables and functions are the ones most plugins need, @@ -411,8 +413,8 @@ function that is called after the error message is printed, to do any final cleanup. Note that while any plugin can use this for a fatal error, plugins should -try to avoid dying on bad input, as that will halt the entire wiki build -and make the wiki unusable. So for example, if a +try to avoid dying on bad input when building a page, as that will halt +the entire wiki build and make the wiki unusable. So for example, if a [[ikiwiki/PreProcessorDirective]] is passed bad parameters, it's better to return an error message, which can appear on the wiki page, rather than calling error(). |