Dokuwiki module for Elgg 1.7

1 files changed, 248 insertions, 0 deletions

diff --git a/lib/dokuwiki/inc/plugin.php b/lib/dokuwiki/inc/plugin.php
new file mode 100644
index 000000000..364534739
--- /dev/null
+++ b/lib/dokuwiki/inc/plugin.php
@@ -0,0 +1,248 @@
+<?php
+/**
+ * DokuWiki Plugin base class
+ *
+ * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author     Christopher Smith <chris@jalakai.co.uk>
+ */
+
+/**
+ * Do not inherit directly from this class, instead inherit from the specialized
+ * ones in lib/plugin
+ */
+class DokuWiki_Plugin {
+
+    var $localised = false;        // set to true by setupLocale() after loading language dependent strings
+    var $lang = array();           // array to hold language dependent strings, best accessed via ->getLang()
+    var $configloaded = false;     // set to true by loadConfig() after loading plugin configuration variables
+    var $conf = array();           // array to hold plugin settings, best accessed via ->getConf()
+
+    /**
+     * General Info
+     *
+     * Needs to return a associative array with the following values:
+     *
+     * author - Author of the plugin
+     * email  - Email address to contact the author
+     * date   - Last modified date of the plugin in YYYY-MM-DD format
+     * name   - Name of the plugin
+     * desc   - Short description of the plugin (Text only)
+     * url    - Website with more information on the plugin (eg. syntax description)
+     */
+    function getInfo(){
+        $parts = explode('_',get_class($this));
+        $info  = DOKU_PLUGIN.'/'.$parts[2].'/plugin.info.txt';
+        if(@file_exists($info)) return confToHash($info);
+        trigger_error('getInfo() not implemented in '.get_class($this).' and '.$info.' not found', E_USER_WARNING);
+    }
+
+    // plugin introspection methods
+    // extract from class name, format = <plugin type>_plugin_<name>[_<component name>]
+    function getPluginType() {
+        list($t) = explode('_', get_class($this), 2);
+        return $t;
+    }
+    function getPluginName() {
+        list($t, $p, $n) = explode('_', get_class($this), 4);
+        return $n;
+    }
+    function getPluginComponent() {
+        list($t, $p, $n, $c) = explode('_', get_class($this), 4);
+        return (isset($c)?$c:'');
+    }
+
+    // localisation methods
+    /**
+     * getLang($id)
+     * use this function to access plugin language strings
+     * to try to minimise unnecessary loading of the strings when the plugin doesn't require them
+     * e.g. when info plugin is querying plugins for information about themselves.
+     *
+     * @param   $id     id of the string to be retrieved
+     * @return  string  string in appropriate language or english if not available
+     */
+    function getLang($id) {
+        if (!$this->localised) $this->setupLocale();
+
+        return (isset($this->lang[$id]) ? $this->lang[$id] : '');
+    }
+
+    /**
+     * locale_xhtml($id)
+     *
+     * retrieve a language dependent file and pass to xhtml renderer for display
+     * plugin equivalent of p_locale_xhtml()
+     *
+     * @param   $id     id of language dependent wiki page
+     * @return  string  parsed contents of the wiki page in xhtml format
+     */
+    function locale_xhtml($id) {
+        return p_cached_output($this->localFN($id));
+    }
+
+    /**
+     * localFN($id)
+     * prepends appropriate path for a language dependent filename
+     * plugin equivalent of localFN()
+     */
+    function localFN($id) {
+        global $conf;
+        $plugin = $this->getPluginName();
+        $file = DOKU_PLUGIN.$plugin.'/lang/'.$conf['lang'].'/'.$id.'.txt';
+        if(!@file_exists($file)){
+            //fall back to english
+            $file = DOKU_PLUGIN.$plugin.'/lang/en/'.$id.'.txt';
+        }
+        return $file;
+    }
+
+    /**
+     *  setupLocale()
+     *  reads all the plugins language dependent strings into $this->lang
+     *  this function is automatically called by getLang()
+     */
+    function setupLocale() {
+        if ($this->localised) return;
+
+        global $conf;            // definitely don't invoke "global $lang"
+        $path = DOKU_PLUGIN.$this->getPluginName().'/lang/';
+
+        $lang = array();
+
+        // don't include once, in case several plugin components require the same language file
+        @include($path.'en/lang.php');
+        if ($conf['lang'] != 'en') @include($path.$conf['lang'].'/lang.php');
+
+        $this->lang = $lang;
+        $this->localised = true;
+    }
+
+    // configuration methods
+    /**
+     * getConf($setting)
+     *
+     * use this function to access plugin configuration variables
+     */
+    function getConf($setting){
+
+        if (!$this->configloaded){ $this->loadConfig(); }
+
+        return $this->conf[$setting];
+    }
+
+    /**
+     * loadConfig()
+     * merges the plugin's default settings with any local settings
+     * this function is automatically called through getConf()
+     */
+    function loadConfig(){
+        global $conf;
+
+        $defaults = $this->readDefaultSettings();
+        $plugin = $this->getPluginName();
+
+        foreach ($defaults as $key => $value) {
+            if (isset($conf['plugin'][$plugin][$key])) continue;
+            $conf['plugin'][$plugin][$key] = $value;
+        }
+
+        $this->configloaded = true;
+        $this->conf =& $conf['plugin'][$plugin];
+    }
+
+    /**
+     * read the plugin's default configuration settings from conf/default.php
+     * this function is automatically called through getConf()
+     *
+     * @return    array    setting => value
+     */
+    function readDefaultSettings() {
+
+        $path = DOKU_PLUGIN.$this->getPluginName().'/conf/';
+        $conf = array();
+
+        if (@file_exists($path.'default.php')) {
+            include($path.'default.php');
+        }
+
+        return $conf;
+    }
+
+    /**
+     * Loads a given helper plugin (if enabled)
+     *
+     * @author  Esther Brunner <wikidesign@gmail.com>
+     *
+     * @param   $name   name of plugin to load
+     * @param   $msg    message to display in case the plugin is not available
+     *
+     * @return  object  helper plugin object
+     */
+    function loadHelper($name, $msg){
+        if (!plugin_isdisabled($name)){
+            $obj =& plugin_load('helper',$name);
+        }else{
+            $obj = null;
+        }
+        if (is_null($obj) && $msg) msg("Helper plugin $name is not available or invalid.",-1);
+        return $obj;
+    }
+
+    // standard functions for outputing email addresses and links
+    // use these to avoid having to duplicate code to produce links in line with the installation configuration
+
+    /**
+     * email
+     * standardised function to generate an email link according to obfuscation settings
+     */
+    function email($email, $name='', $class='', $more='') {
+        if (!$email) return $name;
+        $email = obfuscate($email);
+        if (!$name) $name = $email;
+        $class = "class='".($class ? $class : 'mail')."'";
+        return "<a href='mailto:$email' $class title='$email' $more>$name</a>";
+    }
+
+    /**
+     * external_link
+     * standardised function to generate an external link according to conf settings
+     */
+    function external_link($link, $title='', $class='', $target='', $more='') {
+        global $conf;
+
+        $link = htmlentities($link);
+        if (!$title) $title = $link;
+        if (!$target) $target = $conf['target']['extern'];
+        if ($conf['relnofollow']) $more .= ' rel="nofollow"';
+
+        if ($class) $class = " class='$class'";
+        if ($target) $target = " target='$target'";
+        if ($more) $more = " ".trim($more);
+
+        return "<a href='$link'$class$target$more>$title</a>";
+    }
+
+    /**
+     * output text string through the parser, allows dokuwiki markup to be used
+     * very ineffecient for small pieces of data - try not to use
+     */
+    function render($text, $format='xhtml') {
+        return p_render($format, p_get_instructions($text),$info);
+    }
+
+    /**
+     * Allow the plugin to prevent DokuWiki creating a second instance of itself
+     *
+     * @return bool   true if the plugin can not be instantiated more than once
+     */
+    function isSingleton() {
+        return false;
+    }
+
+    // deprecated functions
+    function plugin_localFN($id) { return $this->localFN($id); }
+    function plugin_locale_xhtml($id) { return $this->locale_xhtml($id); }
+    function plugin_email($e, $n='', $c='', $m='') { return $this->email($e, $n, $c, $m); }
+    function plugin_link($l, $t='', $c='', $to='', $m='') { return $this->external_link($l, $t, $c, $to, $m); }
+    function plugin_render($t, $f='xhtml') { return $this->render($t, $f); }
+}