add cpan link

[git.ikiwiki.info.git] / doc / plugins / po.mdwn

diff --git a/doc/plugins/po.mdwn b/doc/plugins/po.mdwn
index 7165015ab5f8ba201090cfeb73ddfb0b9ba9132a..576d36ec17a51fc38e344a5162895e76f5c6dd4b 100644 (file)
--- a/doc/plugins/po.mdwn
+++ b/doc/plugins/po.mdwn
@@ -5,6 +5,8 @@ This plugin adds support for multi-lingual wikis, translated with
 gettext, using [po4a](http://po4a.alioth.debian.org/).
 
 It depends on the Perl `Locale::Po4a::Po` library (`apt-get install po4a`).
 gettext, using [po4a](http://po4a.alioth.debian.org/).
 
 It depends on the Perl `Locale::Po4a::Po` library (`apt-get install po4a`).

+As detailed bellow in the security section, `po4a` is subject to
+denial-of-service attacks before version 0.35.

 
 [[!toc levels=2]]
 
 
 [[!toc levels=2]]
 


@@ -53,7 +55,7 @@ Supported languages
 languages, such as:
 
         po_slave_languages => { 'fr' => 'Français',
 languages, such as:
 
         po_slave_languages => { 'fr' => 'Français',

-                                'es' => 'Castellano',
+                                'es' => 'Español',

                                 'de' => 'Deutsch',
         }
 
                                 'de' => 'Deutsch',
         }
 


@@ -70,17 +72,19 @@ worry about excluding them explicitly from this [[ikiwiki/PageSpec]].
 Internal links
 --------------
 
 Internal links
 --------------
 

+### Links targets
+

 The `po_link_to` option in `ikiwiki.setup` is used to decide how
 internal links should be generated, depending on web server features
 and site-specific preferences.
 
 The `po_link_to` option in `ikiwiki.setup` is used to decide how
 internal links should be generated, depending on web server features
 and site-specific preferences.
 

-### Default linking behavior
+#### Default linking behavior

 
 If `po_link_to` is unset, or set to `default`, ikiwiki's default
 linking behavior is preserved: `\[[destpage]]` links to the master
 language's page.
 
 
 If `po_link_to` is unset, or set to `default`, ikiwiki's default
 linking behavior is preserved: `\[[destpage]]` links to the master
 language's page.
 

-### Link to current language
+#### Link to current language

 
 If `po_link_to` is set to `current`, `\[[destpage]]` links to the
 `destpage`'s version written in the current page's language, if
 
 If `po_link_to` is set to `current`, `\[[destpage]]` links to the
 `destpage`'s version written in the current page's language, if


@@ -89,7 +93,7 @@ available, *i.e.*:
 * `foo/destpage/index.LL.html` if `usedirs` is enabled
 * `foo/destpage.LL.html` if `usedirs` is disabled
 
 * `foo/destpage/index.LL.html` if `usedirs` is enabled
 * `foo/destpage.LL.html` if `usedirs` is disabled
 

-### Link to negotiated language
+#### Link to negotiated language

 
 If `po_link_to` is set to `negotiated`, `\[[page]]` links to the
 negotiated preferred language, *i.e.* `foo/page/`.
 
 If `po_link_to` is set to `negotiated`, `\[[page]]` links to the
 negotiated preferred language, *i.e.* `foo/page/`.


@@ -102,7 +106,6 @@ negotiated preferred language, *i.e.* `foo/page/`.
 * if the web server does not support Content Negotiation, setting
   `po_link_to` to `negotiated` will produce a unusable website.
 
 * if the web server does not support Content Negotiation, setting
   `po_link_to` to `negotiated` will produce a unusable website.
 

-

 Server support
 ==============
 
 Server support
 ==============
 


@@ -111,7 +114,8 @@ Apache
 
 Using Apache `mod_negotiation` makes it really easy to have Apache
 serve any page in the client's preferred language, if available.
 
 Using Apache `mod_negotiation` makes it really easy to have Apache
 serve any page in the client's preferred language, if available.

-This is the default Debian Apache configuration.
+
+Add 'Options MultiViews' to the wiki directory's configuration in Apache.

 
 When `usedirs` is enabled, one has to set `DirectoryIndex index` for
 the wiki context.
 
 When `usedirs` is enabled, one has to set `DirectoryIndex index` for
 the wiki context.


@@ -120,14 +124,17 @@ Setting `DefaultLanguage LL` (replace `LL` with your default MIME
 language code) for the wiki context can help to ensure
 `bla/page/index.en.html` is served as `Content-Language: LL`.
 
 language code) for the wiki context can help to ensure
 `bla/page/index.en.html` is served as `Content-Language: LL`.
 

+For details, see [Apache's documentation](http://httpd.apache.org/docs/2.2/content-negotiation.html).
+

 lighttpd
 --------
 
 lighttpd
 --------
 

-lighttpd unfortunately does not support content negotiation.
+Recent versions of lighttpd should be able to use
+`$HTTP["language"]` to configure the translatted pages to be served.

 
 

-**FIXME**: does `mod_magnet` provide the functionality needed to
- emulate this?
+See [Lighttpd Issue](http://redmine.lighttpd.net/issues/show/1119)

 
 

+TODO: Example

 
 Usage
 =====
 
 Usage
 =====


@@ -147,24 +154,9 @@ display things only on translatable or translation pages.
 The `OTHERLANGUAGES` loop provides ways to display other languages'
 versions of the same page, and the translations' status.
 
 The `OTHERLANGUAGES` loop provides ways to display other languages'
 versions of the same page, and the translations' status.
 

-One typically adds the following code to `templates/page.tmpl`:
-
-       <TMPL_IF NAME="OTHERLANGUAGES">
-       <div id="otherlanguages">
-         <ul>
-         <TMPL_LOOP NAME="OTHERLANGUAGES">
-           <li>
-             <a href="<TMPL_VAR NAME="URL">"><TMPL_VAR NAME="LANGUAGE"></a>
-             <TMPL_UNLESS NAME="MASTER">
-               (<TMPL_VAR NAME="PERCENT">&nbsp;%)
-             </TMPL_UNLESS>
-           </li>
-         </TMPL_LOOP>
-         </ul>
-       </div>
-       </TMPL_IF>
-
-The following variables are available inside the loop (for every page in):
+An example of its use can be found in the default
+`templates/page.tmpl`. In case you want to customize it, the following
+variables are available inside the loop (for every page in):

 
 * `URL` - url to the page
 * `CODE` - two-letters language code
 
 * `URL` - url to the page
 * `CODE` - two-letters language code


@@ -175,15 +167,8 @@ The following variables are available inside the loop (for every page in):
 ### Display the current translation status
 
 The `PERCENTTRANSLATED` variable is set to the translation
 ### Display the current translation status
 
 The `PERCENTTRANSLATED` variable is set to the translation

-completeness, expressed in percent, on "slave" pages.
-
-One can use it this way:
-
-       <TMPL_IF NAME="ISTRANSLATION">
-       <div id="percenttranslated">
-         <TMPL_VAR NAME="PERCENTTRANSLATED">
-       </div>
-       </TMPL_IF>
+completeness, expressed in percent, on "slave" pages. It is used by
+the default `templates/page.tmpl`.

 
 Additional PageSpec tests
 -------------------------
 
 Additional PageSpec tests
 -------------------------


@@ -228,8 +213,8 @@ preferred `$EDITOR`, without needing to be online.
 Markup languages support
 ------------------------
 
 Markup languages support
 ------------------------
 

-Markdown is well supported. Some other markup languages supported by
-ikiwiki mostly work, but some pieces of syntax are not rendered
+[[Markdown|mdwn]] is well supported. Some other markup languages supported
+by ikiwiki mostly work, but some pieces of syntax are not rendered

 correctly on the slave pages:
 
 * [[reStructuredText|rst]]: anonymous hyperlinks and internal
 correctly on the slave pages:
 
 * [[reStructuredText|rst]]: anonymous hyperlinks and internal


@@ -243,7 +228,7 @@ correctly on the slave pages:
 Security
 ========
 
 Security
 ========
 

-[[./security]] contains a detailed security analysis of this plugin
+[[po/discussion]] contains a detailed security analysis of this plugin

 and its dependencies.
 
 When using po4a older than 0.35, it is recommended to uninstall
 and its dependencies.
 
 When using po4a older than 0.35, it is recommended to uninstall


@@ -256,49 +241,85 @@ TODO
 Better links
 ------------
 
 Better links
 ------------
 

-### Page title in links
-
-Using the fix to
+Once the fix to

 [[bugs/pagetitle_function_does_not_respect_meta_titles]] from
 [[bugs/pagetitle_function_does_not_respect_meta_titles]] from

-[[intrigeri]]'s `meta` branch, the generated links' text is based on
-the page titles set with the [[meta|plugins/meta]] plugin. This has to
-be merged into ikiwiki upstream, though.
+[[intrigeri]]'s `meta` branch is merged into ikiwiki upstream, the
+generated links' text will be optionally based on the page titles set
+with the [[meta|plugins/meta]] plugin, and will thus be translatable.
+It will also allow displaying the translation status in links to slave
+pages. Both were implemented, and reverted in commit
+ea753782b222bf4ba2fb4683b6363afdd9055b64, which should be reverted
+once [[intrigeri]]'s `meta` branch is merged.
+
+An integration branch, called `meta-po`, merges [[intrigeri]]'s `po`
+and `meta` branches, and thus has this additional features.
+
+Language display order
+----------------------
+
+Jonas pointed out that one might want to control the order that links to
+other languages are listed, for various reasons. Currently, there is no
+order, as `po_slave_languages` is a hash. It would need to be converted
+to an array to support this. (If twere done, twere best done quickly.)
+--[[Joey]] 
+
+Pagespecs
+---------

 
 

-Robustness tests
-----------------
+I was suprised that, when using the map directive, a pagespec of "*"
+listed all the translated pages as well as regular pages. That can 
+make a big difference to an existing wiki when po is turned on,
+and seems generally not wanted.
+(OTOH, you do want to match translated pages by
+default when locking pages.) --[[Joey]]

 
 

-### Enabling/disabling the plugin
+Edit links on untranslated pages
+--------------------------------

 
 

-* enabling the plugin with `po_translatable_pages` set to blacklist: **OK**
-* enabling the plugin with `po_translatable_pages` set to whitelist: **OK**
-* enabling the plugin without `po_translatable_pages` set: **OK**
-* disabling the plugin: **OK**
+If a page is not translated yet, the "translated" version of it
+displays wikilinks to other, existing (but not yet translated?)
+pages as edit links, as if those pages do not exist. 

 
 

-### Changing the plugin config
+That's really confusing, especially as clicking such a link
+brings up an edit form to create a new, english page.

 
 

-* adding existing pages to `po_translatable_pages`: **OK**
-* removing existing pages from `po_translatable_pages`: **OK**
-* adding a language to `po_slave_languages`: **OK**
-* removing a language from `po_slave_languages`: **OK**
-* changing `po_master_language`: **OK**
-* replacing `po_master_language` with a language previously part of
-  `po_slave_languages`: needs two rebuilds, but **OK** (this is quite
-  a perverse test actually)
+This is with po_link_to=current or negotiated. With default, it doesn't
+happen.. 

 
 

-### Creating/deleting/renaming pages
+Also, this may only happen if the page being linked to is coming from an
+underlay, and the underlays lack translation to a given language.
+--[[Joey]] 

 
 

-All cases of master/slave page creation/deletion/rename, both via RCS
-and via CGI, have been tested.
+Double commits of po files
+--------------------------
+
+When adding a new english page, the po files are created, committed,
+and then committed again. The second commit makes this change:
+
+       -"Content-Type: text/plain; charset=utf-8\n"
+       -"Content-Transfer-Encoding: ENCODING"
+       +"Content-Type: text/plain; charset=UTF-8\n"
+       +"Content-Transfer-Encoding: ENCODING\n"
+
+Same thing happens when a change to an existing page triggers a po file
+update. --[[Joey]] 
+
+Ugly messages with empty files
+------------------------------
+
+If there are empty .mdwn files, the po plugin displays some ugly messages.
+
+Translation of directives
+-------------------------

 
 

-### Misc
+If a translated page contains a directive, it may expand to some english
+text, or text in whatever single language ikiwiki is configured to "speak".

 
 

-* general test with `usedirs` disabled: **OK**
-* general test with `indexpages` enabled: **not OK**
-* general test with `po_link_to=default` with `userdirs` enabled: **OK**
-* general test with `po_link_to=default` with `userdirs` disabled: **OK**
+Maybe there could be a way to switch ikiwiki to speaking another language
+when building a non-english page? Then the directives would get translated.

 
 

-Misc. bugs
-----------
+(We also will need this in order to use translated templates, when they are
+available.)

 
 Documentation
 -------------
 
 Documentation
 -------------