-Ikiwiki's plugin interface allows all kinds of useful [[plugins]] to be
+lkiwiki's plugin interface allows all kinds of useful [[plugins]] to be
written to extend ikiwiki in many ways. Despite the length of this page,
it's not really hard. This page is a complete reference to everything a
plugin might want to do. There is also a quick [[tutorial]].
Now that it knows what pages it needs to build, ikiwiki runs two
compile passes. First, it runs `scan` hooks, which collect metadata about
the pages. Then it runs a page rendering pipeline, by calling in turn these
-hooks: `filter`, `preprocess`, `linkify`, `htmlize`, `postscan`,
+hooks: `filter`, `preprocess`, `linkify`, `htmlize`, `indexhtml`,
`pagetemplate`, `sanitize`, `format`.
After all necessary pages are built, it calls the `change` hook. Finally,
hook(type => "needsbuild", id => "foo", call => \&needsbuild);
-This allows a plugin to manipulate the list of files that need to be
-built when the wiki is refreshed. The function is passed a reference to an
-array of files that will be rebuilt, and can modify the array, either
-adding or removing files from it.
+This allows a plugin to observe or even manipulate the list of files that
+need to be built when the wiki is refreshed.
+
+As its first parameter, the function is passed a reference to an array of
+files that will be built. It should return an array reference that is a
+modified version of its input. It can add or remove files from it.
+
+The second parameter passed to the function is a reference to an array of
+files that have been deleted.
### scan
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",
+Runs on the full raw source of a page, before anything else touches it, and
+can make arbitrary changes. The function is passed named parameters "page",
"destpage", and "content". It should return the filtered content.
### preprocess
If `hook` is passed an optional "longname" parameter, this value is used
when prompting a user to choose a page type on the edit page form.
-### postscan
+### indexhtml
- hook(type => "postscan", id => "foo", call => \&postscan);
+ hook(type => "indexhtml", id => "foo", call => \&indexhtml);
This hook is called once the page has been converted to html (but before
the generated html is put in a template). The most common use is to
update search indexes. Added in ikiwiki 2.54.
-The function is passed named parameters "page" and "content". Its return
-value is ignored.
+The function is passed named parameters "page", "destpage", and "content".
+Its return value is ignored.
### pagetemplate
hook(type => "pagetemplate", id => "foo", call => \&pagetemplate);
-[[Templates|wikitemplates]] are filled out for many different things in
+[[Templates]] are filled out for many different things in
ikiwiki, like generating a page, or part of a blog page, or an rss feed, or
a cgi. This hook allows modifying the variables available on those
templates. The function is passed named parameters. The "page" and
hook(type => "templatefile", id => "foo", call => \&templatefile);
-This hook allows plugins to change the [[template|wikitemplates]] that is
+This hook allows plugins to change the [[template|templates]] that is
used for a page in the wiki. The hook is passed a "page" parameter, and
should return the name of the template file to use (relative to the
template directory), or undef if it doesn't want to change the default
("page.tmpl").
+### pageactions
+
+ hook(type => "pageactions", id => "foo", call => \&pageactions);
+
+This hook allows plugins to add arbitrary actions to the action bar on a
+page (next to Edit, RecentChanges, etc). The hook is passed a "page"
+parameter, and can return a list of html fragments to add to the action
+bar.
+
### sanitize
hook(type => "sanitize", id => "foo", call => \&sanitize);
* `description` is a short description of the option.
* `link` is a link to further information about the option. This can either
be a [[ikiwiki/WikiLink]], or an url.
+* `htmldescription` is displayed instead of the description by websetup.
* `advanced` can be set to true if the option is more suitable for advanced
users.
* `safe` should be false if the option should not be displayed in unsafe
hook(type => "genwrapper", id => "foo", call => \&genwrapper);
This hook is used to inject C code (which it returns) into the `main`
-function of the ikiwiki wrapper when it is being generated.
+function of the ikiwiki wrapper when it is being generated.
+
+The code runs before anything else -- in particular it runs before
+the suid wrapper has sanitized its environment.
+
+### disable
+
+ hook(type => "disable", id => "foo", call => \&disable);
+
+This hook is only run when a previously enabled plugin gets disabled
+during ikiwiki setup. Plugins can use this to perform cleanups.
## Exported variables
### `template($;@)`
-Creates and returns a [[!cpan HTML::Template]] object. The first parameter
-is the name of the file in the template directory. The optional remaining
+Creates and returns a [[!cpan HTML::Template]] object. (In a list context,
+returns the parameters needed to construct the obhect.)
+
+The first parameter is the name of the template file. The optional remaining
parameters are passed to `HTML::Template->new`.
+Normally, the template file is first looked for in the templates/ subdirectory
+of the srcdir. Failing that, it is looked for in the templatedir.
+
+Wiki pages can be used as templates. This should be done only for templates
+which it is safe to let wiki users edit. Enable it by passing a filename
+with no ".tmpl" extension. Template pages are normally looked for in
+the templates/ directory. If the page name starts with "/", a page
+elsewhere in the wiki can be used.
+
+If the template is not found, or contains a syntax error, an error is thrown.
+
### `template_depends($$;@)`
Use this instead of `template()` if the content of a template is being
If the directory name is not absolute, ikiwiki will assume it is in
the parent directory of the configured underlaydir.
-### `displaytime($;$)`
+### `displaytime($;$$)`
Given a time, formats it for display.
The optional second parameter is a strftime format to use to format the
time.
+If the third parameter is true, this is the publication time of a page.
+(Ie, set the html5 pubdate attribute.)
+
### `gettext`
This is the standard gettext function, although slightly optimised.
This is the standard ngettext function, although slightly optimised.
-### `urlto($$;$)`
+### `urlto($;$$)`
Construct a relative url to the first parameter from the page named by the
second. The first parameter can be either a page name, or some other
destination file, as registered by `will_render`.
-If the third parameter is passed and is true, an absolute url will be
-constructed instead of the default relative url.
+Provide a second parameter whenever possible, since this leads to better
+behaviour for the [[plugins/po]] plugin and `file:///` URLs.
+
+If the second parameter is not specified (or `undef`), the URL will be
+valid from any page on the wiki, or from the CGI; if possible it'll
+be a path starting with `/`, but an absolute URL will be used if
+the wiki and the CGI are on different domains.
+
+If the third parameter is passed and is true, the url will be a fully
+absolute url. This is useful when generating an url to publish elsewhere.
### `newpagefile($$)`
it might return the current revision ID of the file, and use that
information later when merging changes.
-#### `rcs_commit($$$;$$)`
+#### `rcs_commit(@)`
+
+Passed named parameters: `file`, `message`, `token` (from `rcs_prepedit`),
+and `session` (optional).
-Passed a file, message, token (from `rcs_prepedit`), user, and ip address.
Should try to commit the file. Returns `undef` on *success* and a version
of the page with the rcs's conflict markers on failure.
-#### `rcs_commit_staged($$$)`
+#### `rcs_commit_staged(@)`
-Passed a message, user, and ip address. Should commit all staged changes.
-Returns undef on success, and an error message on failure.
+Passed named parameters: `message`, and `session` (optional).
+
+Should commit all staged changes. Returns undef on success, and an
+error message on failure.
Changes can be staged by calls to `rcs_add`, `rcs_remove`, and
`rcs_rename`.
{
rev => # the RCSs id for this commit
- user => # name of user who made the change,
+ user => # user who made the change (may be an openid),
+ nickname => # short name for user (optional; not an openid),
+
committype => # either "web" or the name of the rcs,
when => # time when the change was made,
message => [
],
}
-#### `rcs_diff($)`
+#### `rcs_diff($;$)`
+
+The first parameter is the rev from `rcs_recentchanges`.
+The optional second parameter is how many lines to return (default: all).
-The parameter is the rev from `rcs_recentchanges`.
Should return a list of lines of the diff (including \n) in list
-context, and the whole diff in scalar context.
+context, and a string containing the whole diff in scalar context.
#### `rcs_getctime($)`
This is used to get the page creation time for a file from the RCS, by looking
it up in the history.
-It's ok if this is not implemented, and throws an error.
-
If the RCS cannot determine a ctime for the file, return 0.
#### `rcs_getmtime($)`
It should examine the incoming changes, and do any sanity
checks that are appropriate for the RCS to limit changes to safe file adds,
-removes, and changes. If something bad is found, it should exit
-nonzero, to abort the push. Otherwise, it should return a list of
-files that were changed, in the form:
+removes, and changes. If something bad is found, it should die, to abort
+the push. Otherwise, it should return a list of files that were changed,
+in the form:
{
file => # name of file that was changed
The list will then be checked to make sure that each change is one that
is allowed to be made via the web interface.
+#### `rcs_preprevert($)`
+
+This is called by the revert web interface. It is passed a RCS-specific
+change ID, and should determine what the effects would be of reverting
+that change, and return the same data structure as `rcs_receive`.
+
+Like `rcs_receive`, it should do whatever sanity checks are appropriate
+for the RCS to limit changes to safe changes, and die if a change would
+be unsafe to revert.
+
+#### `rcs_revert($)`
+
+This is called by the revert web interface. It is passed a named
+parameter rev that is the RCS-specific change ID to revert.
+
+It should try to revert the specified rev, and leave the reversion staged
+so `rcs_commit_staged` will complete it. It should return undef on _success_
+and an error message on failure.
+
+This hook and `rcs_preprevert` are optional, if not implemented, no revert
+web interface will be available.
+
### PageSpec plugins
It's also possible to write plugins that add new functions to