add readtemplate hook

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

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index 5c2e14135e9f23e19780bcb0346b432d765f89ed..f4620b62328b4c0f7f611bc2ba21d21914855565 100644 (file)
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -59,33 +59,39 @@ an example.
 
 Alice browses to a page and clicks Edit.
 
 
 Alice browses to a page and clicks Edit.
 

-* Ikiwiki is run as a cgi. It assigns Alice a session cookie, and,
-  by calling the `auth` hooks, sees that she is not yet logged in.
-* The `sessioncgi` hooks are then called, and one of them,
-  from the [[editpage]] plugin, notices that the cgi has been told "do=edit".
-* The [[editpage]] plugin calls the `canedit` hook to check if this
-  page edit is allowed. The [[signinedit]] plugin has a hook that says not:
-  Alice is not signed in.
-* The [[signinedit]] plugin then launches the signin process. A signin
-  page is built by calling the `formbuilder_setup` hook.
+* Ikiwiki is run as a cgi. It assigns Alice a session cookie, and, by calling
+  the [[`auth`|plugins/write#auth]] hooks, sees that she is not yet logged in.
+* The [[`sessioncgi`|plugins/write#sessioncgi]] hooks are then called, and one
+  of them, from the [[editpage]] plugin, notices that the cgi has been told
+  "do=edit".
+* The [[editpage]] plugin calls the [[`canedit`|plugins/write#canedit]] hook
+  to check if this page edit is allowed. The [[signinedit]] plugin has a hook
+  that says not: Alice is not signed in.
+* The [[signinedit]] plugin then launches the signin process. A signin page is
+  built by calling the [[`formbuilder_setup`|plugins/write#formbuilder]]
+  hook.

 
 Alice signs in with her openid.
 
 
 Alice signs in with her openid.
 

-* The [[openid]] plugin's `formbuilder` hook sees that an openid was
-  entered in the signin form, and redirects to Alice's openid provider.
-* Alice's openid provider calls back to ikiwiki. The [[openid]] plugin
-  has an `auth` hook that finishes the openid signin process.
+* The [[openid]] plugin's [[`formbuilder`|plugins/write#formbuilder]] hook
+  sees that an openid was entered in the signin form, and redirects to Alice's
+  openid provider.
+* Alice's openid provider calls back to ikiwiki. The [[openid]] plugin has an
+  [[`auth`|plugins/write#auth]] hook that finishes the openid signin process.

 * Signin complete, ikiwiki returns to what Alice was doing before; editing
   a page.
 * Signin complete, ikiwiki returns to what Alice was doing before; editing
   a page.

-* Now all the `canedit` hooks are happy. The [[editpage]] plugin calls
-  `formbuilder_setup` to display the page editing form.
+* Now all the [[`canedit`|plugins/write#canedit]] hooks are happy. The
+  [[editpage]] plugin calls
+  [[`formbuilder_setup`|plugins/write#formbuilder]] to display the page
+  editing form.

 
 Alice saves her change to the page.
 
 
 Alice saves her change to the page.
 

-* The [[editpage]] plugin's `formbuilder` hook sees that the Save button
-  was pressed, and calls the `checkcontent` and `editcontent` hooks.
-  Then it saves the page to disk, and branches into the compiler part
-  of ikiwiki to refresh the wiki.
+* The [[editpage]] plugin's [[`formbuilder`|plugins/write#formbuilder]] hook
+  sees that the Save button was pressed, and calls the
+  [[`checkcontent`|plugins/write#checkcontent]] and
+  [[`editcontent`|plugins/write#editcontent]] hooks.  Then it saves the page
+  to disk, and branches into the compiler part of ikiwiki to refresh the wiki.

 
 ## Types of plugins
 
 
 ## Types of plugins
 


@@ -205,6 +211,26 @@ them to `%links`. Present in IkiWiki 2.40 and later.
 The function is passed named parameters "page" and "content". Its return
 value is ignored.
 
 The function is passed named parameters "page" and "content". Its return
 value is ignored.
 

+### <a name="readtemplate">readtemplate</a>
+
+       hook(type => "readtemplate", id => "foo", call => \&readtemplate);
+
+Runs on the raw source of a page or `*.tmpl` file that is being
+used as a template, before it is parsed by [[!cpan HTML::Template]].
+
+The function is passed named parameters:
+
+* `id`: the name under which the template was looked up,
+  such as `page.tmpl` or `note`
+* `page`: the name of the template as a page or attachment in the wiki,
+  such as `templates/note`, or `undef` if it's outside the wiki (e.g. in
+  `/usr/share/ikiwiki/templates`)
+* `content`: the content of the corresponding file
+* `untrusted`: true if the template was loaded from the wiki or an underlay,
+  false if it was loaded from a trusted location
+
+It should return the replacement content.
+

 ### <a name="filter">filter</a>
 
        hook(type => "filter", id => "foo", call => \&filter);
 ### <a name="filter">filter</a>
 
        hook(type => "filter", id => "foo", call => \&filter);


@@ -416,7 +442,7 @@ parameters, and if it will handle this CGI request, output a page
 Note that cgi hooks are called as early as possible, before any ikiwiki
 state is loaded, and with no session information.
 
 Note that cgi hooks are called as early as possible, before any ikiwiki
 state is loaded, and with no session information.
 

-### auth
+### <a name="auth">auth</a>

 
        hook(type => "auth", id => "foo", call => \&auth);
 
 
        hook(type => "auth", id => "foo", call => \&auth);
 


@@ -429,7 +455,7 @@ object's "name" parameter to the authenticated user's name. Note that
 if the name is set to the name of a user who is not registered,
 a basic registration of the user will be automatically performed.
 
 if the name is set to the name of a user who is not registered,
 a basic registration of the user will be automatically performed.
 

-### sessioncgi
+### <a name="sessioncgi">sessioncgi</a>

 
        hook(type => "sessioncgi", id => "foo", call => \&sessioncgi);
 
 
        hook(type => "sessioncgi", id => "foo", call => \&sessioncgi);
 


@@ -438,7 +464,7 @@ is only run once a session object is available. It is passed both a CGI
 object and a session object. To check if the user is in fact signed in, you
 can check if the session object has a "name" parameter set.
 
 object and a session object. To check if the user is in fact signed in, you
 can check if the session object has a "name" parameter set.
 

-### canedit
+### <a name="canedit">canedit</a>

 
        hook(type => "canedit", id => "foo", call => \&canedit);
 
 
        hook(type => "canedit", id => "foo", call => \&canedit);
 


@@ -478,7 +504,7 @@ bypass it). It works exactly like the `canedit` hook,
 but is passed the named parameters `cgi` (a CGI object), `session` (a
 session object), `src`, `srcfile`, `dest` and `destfile`.
 
 but is passed the named parameters `cgi` (a CGI object), `session` (a
 session object), `src`, `srcfile`, `dest` and `destfile`.
 

-### checkcontent
+### <a name="checkcontent">checkcontent</a>

        
        hook(type => "checkcontent", id => "foo", call => \&checkcontent);
 
        
        hook(type => "checkcontent", id => "foo", call => \&checkcontent);
 


@@ -499,7 +525,7 @@ should return a message stating what the problem is, or a function
 that can be run to perform whatever action is necessary to allow the user
 to post the content.
 
 that can be run to perform whatever action is necessary to allow the user
 to post the content.
 

-### editcontent
+### <a name="editcontent">editcontent</a>

 
        hook(type => "editcontent", id => "foo", call => \&editcontent);
 
 
        hook(type => "editcontent", id => "foo", call => \&editcontent);
 


@@ -510,7 +536,7 @@ user, the page name, a `CGI` object, and the user's `CGI::Session`.
 
 It can modify the content as desired, and should return the content.
 
 
 It can modify the content as desired, and should return the content.
 

-### formbuilder
+### <a name="formbuilder">formbuilder</a>

 
        hook(type => "formbuilder_setup", id => "foo", call => \&formbuilder_setup);
        hook(type => "formbuilder", id => "foo", call => \&formbuilder);
 
        hook(type => "formbuilder_setup", id => "foo", call => \&formbuilder_setup);
        hook(type => "formbuilder", id => "foo", call => \&formbuilder);


@@ -627,7 +653,7 @@ describes the plugin as a whole. For example:
   strictly required.
 * `section` can optionally specify which section in the config file
   the plugin fits in. The convention is to name the sections the
   strictly required.
 * `section` can optionally specify which section in the config file
   the plugin fits in. The convention is to name the sections the

-  same as the tags used for [[plugins|plugin]] on this wiki.
+  same as the tags used for [[plugins]] on this wiki.

 
 ### genwrapper
 
 
 ### genwrapper
 


@@ -678,7 +704,7 @@ wiki updates.
 
 The `%wikistate` hash can be used by a plugin to store persistant state
 that is not bound to any one page. To set a value, use
 
 The `%wikistate` hash can be used by a plugin to store persistant state
 that is not bound to any one page. To set a value, use

-`$wikistate{$id}{$key}=$value, where `$value` is anything Storable can
+`$wikistate{$id}{$key}=$value`, where `$value` is anything Storable can

 serialize, `$key` is any string you like, and `$id` must be the same as the
 "id" parameter passed to `hook()` when registering the plugin, so that the
 state can be dropped if the plugin is no longer used.
 serialize, `$key` is any string you like, and `$id` must be the same as the
 "id" parameter passed to `hook()` when registering the plugin, so that the
 state can be dropped if the plugin is no longer used.


@@ -1253,6 +1279,20 @@ and an error message on failure.
 This hook and `rcs_preprevert` are optional, if not implemented, no revert
 web interface will be available.
 
 This hook and `rcs_preprevert` are optional, if not implemented, no revert
 web interface will be available.
 

+### `rcs_find_changes($)`
+
+Finds changes committed since the passed RCS-specific rev. Returns
+a hash of the files changed, a hash of the files deleted, and the
+current rev.
+
+This hook is optional.
+
+### `rcs_get_current_rev()`
+
+Gets a RCS-specific rev, which can later be passed to `rcs_find_changes`.
+
+This hook is optional.
+

 ### PageSpec plugins
 
 It's also possible to write plugins that add new functions to
 ### PageSpec plugins
 
 It's also possible to write plugins that add new functions to