X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/8c2415d4d1ce708d2c67a264f4f370b470f06868..623c7e17989f53ef049f12639950d2c50c9edd4f:/doc/plugins/write.mdwn

diff --git a/doc/plugins/write.mdwn b/doc/plugins/write.mdwn
index 5c2e14135..b6d0611dc 100644
--- a/doc/plugins/write.mdwn
+++ b/doc/plugins/write.mdwn
@@ -59,33 +59,39 @@ an example.
 
 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.
 
-* 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.
-* 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.
 
-* 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
 
@@ -205,6 +211,29 @@ them to `%links`. Present in IkiWiki 2.40 and later.
 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]].
+For instance, the [[plugins/templatebody]] plugin uses this to return
+the content of the [[ikiwiki/directive/templatebody]] directive (if there
+is one) instead of the page's full content.
+
+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);
@@ -416,7 +445,7 @@ 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.
 
-### auth
+### <a name="auth">auth</a>
 
 	hook(type => "auth", id => "foo", call => \&auth);
 
@@ -429,7 +458,10 @@ 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.
 
-### sessioncgi
+Auth plugins can use the loginselector helper plugin to let the user
+select which authentication method to use.
+
+### <a name="sessioncgi">sessioncgi</a>
 
 	hook(type => "sessioncgi", id => "foo", call => \&sessioncgi);
 
@@ -438,7 +470,7 @@ 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.
 
-### canedit
+### <a name="canedit">canedit</a>
 
 	hook(type => "canedit", id => "foo", call => \&canedit);
 
@@ -478,7 +510,7 @@ 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`.
 
-### checkcontent
+### <a name="checkcontent">checkcontent</a>
 	
 	hook(type => "checkcontent", id => "foo", call => \&checkcontent);
 
@@ -499,7 +531,7 @@ 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.
 
-### editcontent
+### <a name="editcontent">editcontent</a>
 
 	hook(type => "editcontent", id => "foo", call => \&editcontent);
 
@@ -510,7 +542,7 @@ 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.
 
-### formbuilder
+### <a name="formbuilder">formbuilder</a>
 
 	hook(type => "formbuilder_setup", id => "foo", call => \&formbuilder_setup);
 	hook(type => "formbuilder", id => "foo", call => \&formbuilder);
@@ -627,7 +659,7 @@ 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
-  same as the tags used for [[plugins|plugin]] on this wiki.
+  same as the tags used for [[plugins]] on this wiki.
 
 ### genwrapper
 
@@ -678,7 +710,7 @@ 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
-`$wikistate{$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.
@@ -709,21 +741,28 @@ Ordinary [[WikiLinks|ikiwiki/WikiLink]] appear in `%links`, but not in
 
 ### `%pagesources`
 
-The `%pagesources` has can be used to look up the source filename
+The `%pagesources` hash can be used to look up the source filename
 of a page. So the key is the page name, and the value is the source
 filename. Do not modify this hash.
 
+Attachments also appear in this hash, with the same key and value.
+
 	$pagesources{"foo"} = "foo.mdwn";
+	$pagesources{"logo/ikiwiki.png"} = "logo/ikiwiki.png";
+
 
 ### `%destsources`
 
 The `%destsources` hash records the name of the source file used to
 create each destination file. The key is the output filename (ie,
-"foo/index.html"), and the value is the source filename that it was built
-from (eg, "foo.mdwn"). Note that a single source file may create multiple
+"foo/index.html"), and the value is the name of the page that it was built
+from (eg, "foo"). Note that a single source file may create multiple
 destination files. Do not modify this hash directly; call `will_render()`.
-	
-	$destsources{"foo/index.html"} = "foo.mdwn";
+
+Attachments also appear in this hash, with the same key and value.
+
+	$destsources{"foo/index.html"} = "foo";
+	$destsources{"logo/ikiwiki.png"} = "logo/ikiwiki.png";
 
 ## Library functions
 
@@ -1253,6 +1292,20 @@ and an error message on failure.
 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