add

[ikiwiki.git] / doc / plugins / write.mdwn

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index d881554cab36721199a2e29ba78e8558237d9f7d..245f7c9ee8dad10063c050bb90d416d1927bcc3c 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -4,7 +4,7 @@ lowercase, such as `IkiWiki::Plugin::inline`. Ikiwiki includes a
 `IkiWiki::Plugin::skeleton` that can be fleshed out to make a useful
 plugin. `IkiWiki::Plugin::pagecount` is another simple example.
 
 `IkiWiki::Plugin::skeleton` that can be fleshed out to make a useful
 plugin. `IkiWiki::Plugin::pagecount` is another simple example.
 

-## Note
+# Note

 
 One thing to keep in mind when writing a plugin is that ikiwiki is a wiki
 *compiler*. So plugins influence pages when they are built, not when they
 
 One thing to keep in mind when writing a plugin is that ikiwiki is a wiki
 *compiler*. So plugins influence pages when they are built, not when they


@@ -15,7 +15,7 @@ random or changing thing on a page will generate a static page that won't
 change until ikiwiki rebuilds the page for some other reason, like the page
 being edited.
 
 change until ikiwiki rebuilds the page for some other reason, like the page
 being edited.
 

-## Registering plugins
+# Registering plugins

 
 Plugins should, when imported, call IkiWiki::hook to hook into ikiwiki's
 processing. The function uses named parameters, and use varies depending on
 
 Plugins should, when imported, call IkiWiki::hook to hook into ikiwiki's
 processing. The function uses named parameters, and use varies depending on


@@ -26,7 +26,7 @@ hook, a "id" paramter, which should be a unique string for this plugin, and
 a "call" parameter, which is a reference to a function to call for the
 hook.
 
 a "call" parameter, which is a reference to a function to call for the
 hook.
 

-## Writing a [[PreProcessorDirective]]
+# Writing a [[PreProcessorDirective]]

 
 This is probably the most common use of a plugin.
 
 
 This is probably the most common use of a plugin.
 


@@ -40,26 +40,27 @@ Each time the directive is processed, the referenced function (`preprocess` in t
 as named parameters as well. Whatever the function returns goes onto the
 page in place of the directive.
 
 as named parameters as well. Whatever the function returns goes onto the
 page in place of the directive.
 

-### Error handing
+## Error handing

 
 While a plugin can call ikiwiki's error routine for a fatal error, for
 errors that aren't intended to halt the entire wiki build, including bad
 parameters passed to a [[PreProcessorDirective]], etc, it's better to just
 return the error message as the output of the plugin.
 
 
 While a plugin can call ikiwiki's error routine for a fatal error, for
 errors that aren't intended to halt the entire wiki build, including bad
 parameters passed to a [[PreProcessorDirective]], etc, it's better to just
 return the error message as the output of the plugin.
 

-### Html issues
+## Html issues

 
 

-Note that if [[HTMLSanitization]] is enabled, html in 
+Note that if the [[htmlscrubber]] is enabled, html in

 [[PreProcessorDirective]] output is sanitised, which may limit what your
 plugin can do. Also, the rest of the page content is not in html format at
 [[PreProcessorDirective]] output is sanitised, which may limit what your
 plugin can do. Also, the rest of the page content is not in html format at

-preprocessor time. Text output by a preprocessor directive will be passed through markdown along with the rest of the page.
+preprocessor time. Text output by a preprocessor directive will be passed
+through markdown along with the rest of the page.

 
 

-## Other types of hooks
+# Other types of hooks

 
 Beyond PreProcessorDirectives, Other types of hooks that can be used by
 plugins include:
 
 
 Beyond PreProcessorDirectives, Other types of hooks that can be used by
 plugins include:
 

-### checkconfig
+## checkconfig

 
        IkiWiki::hook(type => "checkconfig", id => "foo", call => \&checkconfig);
 
 
        IkiWiki::hook(type => "checkconfig", id => "foo", call => \&checkconfig);
 


@@ -68,30 +69,50 @@ configuration. It's called early in the ikiwiki startup process. The
 function is passed no values. It's ok for the function to call
 IkiWiki::error if something isn't configured right.
 
 function is passed no values. It's ok for the function to call
 IkiWiki::error if something isn't configured right.
 

-### filter
+## filter

 
        IkiWiki::hook(type => "filter", id => "foo", call => \&filter);
 
 Runs on the raw source of a page, before anything else touches it, and can
 make arbitrary changes. The function is passed named parameters `page` and
 
        IkiWiki::hook(type => "filter", id => "foo", call => \&filter);
 
 Runs on the raw source of a page, before anything else touches it, and can
 make arbitrary changes. The function is passed named parameters `page` and

-`content` should return the filtered content.
+`content` and should return the filtered content.

 
 

-### delete
+## sanitize
+
+       IkiWiki::hook(type => "filter", id => "foo", call => \&sanitize);
+
+Use this to implement html sanitization or anything else that needs to
+modify the content of a page after it has been fully converted to html.
+The function is passed the page content and should return the sanitized
+content.
+
+## pagetemplate
+
+       IkiWiki::hook(type => "pagetemplate", id => "foo", call => \&pagetemplate);
+
+Each time a page is rendered, a [[template|templates]] is filled out.
+This hook allows modifying that template. The function is passed the name
+of the page, and a `HTML::Template` object that is the template that will
+be used to generate the page. It can manipulate that template, the most
+common thing to do is probably to call $template->param() to add a new
+custom parameter to the template.
+
+## delete

 
        IkiWiki::hook(type => "delete", id => "foo", call => \&dele);
 
 Each time a page or pages is removed from the wiki, the referenced function
 is called, and passed the names of the source files that were removed.
 
 
        IkiWiki::hook(type => "delete", id => "foo", call => \&dele);
 
 Each time a page or pages is removed from the wiki, the referenced function
 is called, and passed the names of the source files that were removed.
 

-### render
+## change

 
 

-       IkiWiki::hook(type => "render", id => "foo", call => \&render);
+       IkiWiki::hook(type => "change", id => "foo", call => \&render);

 
 

-Each time ikiwiki renders a change or addition (but not deletion) of a page
-to the wiki, the referenced function is called, and passed the name of the
-source file that was rendered.
+Each time ikiwiki renders a change or addition (but not deletion) to the
+wiki, the referenced function is called, and passed the names of the
+source files that were rendered.

 
 

-### cgi
+## cgi

 
        IkiWiki::hook(type => "cgi", id => "foo", call => \&cgi);
 
 
        IkiWiki::hook(type => "cgi", id => "foo", call => \&cgi);
 


@@ -100,13 +121,13 @@ called in turn, and passed a CGI object. The hook should examine the
 parameters, and if it will handle this CGI request, output a page and
 terminate the program.
 
 parameters, and if it will handle this CGI request, output a page and
 terminate the program.
 

-## Wiki configuration
+# Wiki configuration

 
 A plugin can access the wiki's configuration via the `%IkiWiki::config`
 hash. The best way to understand the contents of the hash is to look at
 [[ikiwiki.setup]], which sets the hash content to configure the wiki.
 
 
 A plugin can access the wiki's configuration via the `%IkiWiki::config`
 hash. The best way to understand the contents of the hash is to look at
 [[ikiwiki.setup]], which sets the hash content to configure the wiki.
 

-## Wiki data
+# Wiki data

 
 If your plugin needs to access data about other pages in the wiki. It can
 use the following hashes, using a page name as the key:
 
 If your plugin needs to access data about other pages in the wiki. It can
 use the following hashes, using a page name as the key:


@@ -126,19 +147,7 @@ use the following hashes, using a page name as the key:
   it is by using the IkiWiki::add_depends function, which takes as its
   parameters the page name and a [[GlobList]] of dependencies to add.
 
   it is by using the IkiWiki::add_depends function, which takes as its
   parameters the page name and a [[GlobList]] of dependencies to add.
 

-## Page templates
-
-Plugins are mostly limited to changing the content of pages, to change the
-look and feel of the wiki it's generally better to use a stylesheet and
-[[templates]]. However, there are some hooks in the templates that plugins
-can use to add stuff to the wiki's UI:
-
-### Adding content to the page header
-
-Html that is added to $IkiWiki::config{headercontent} will show up in the
-header of the page. One good thing to put here is a search form.
-
-## RCS plugins
+# RCS plugins

 
 ikiwiki's support for revision control systems also uses pluggable perl
 modules. These are in the `IkiWiki::RCS` namespace, for example
 
 ikiwiki's support for revision control systems also uses pluggable perl
 modules. These are in the `IkiWiki::RCS` namespace, for example


@@ -147,3 +156,5 @@ modules. These are in the `IkiWiki::RCS` namespace, for example
 Each RCS plugin must support all the IkiWiki::rcs\_* functions.
 See IkiWiki::RCS::Stub for the full list of functions. It's ok if
 rcs\_getctime does nothing except for throwing an error.
 Each RCS plugin must support all the IkiWiki::rcs\_* functions.
 See IkiWiki::RCS::Stub for the full list of functions. It's ok if
 rcs\_getctime does nothing except for throwing an error.

+
+See [[about_RCS_backends]] for some more info.