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257 lines (223 loc) · 8.35 KB
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<?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:
*
* base - the plugin's base name (eg. the directory it needs to be installed in)
* 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);
msg('getInfo() not implemented in '.get_class($this).
' and '.$info.' not found.<br />This is a bug in the '.
$parts[2].' plugin and should be reported to the '.
'plugin author.',-1);
return array(
'date' => '0000-00-00',
'name' => $parts[2].' plugin',
);
}
// plugin introspection methods
// extract from class name, format = <plugin type>_plugin_<name>[_<component name>]
function getPluginType() {
list($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 string $id id of the string to be retrieved
* @return string string in appropriate language or english if not available
*/
function getLang($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 string $id id of language dependent wiki page
* @return string parsed contents of the wiki page in xhtml format
*/
function locale_xhtml($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();
$file = DOKU_CONF.'plugin_lang/'.$plugin.'/'.$conf['lang'].'/'.$id.'.txt';
if (!@file_exists($file)){
$file = DOKU_PLUGIN.$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
*
* @param string $setting the setting to access
* @param mixed $notset what to return if the setting is not available
* @return mixed
*/
function getConf($setting, $notset=false){
if (!$this->configloaded){ $this->loadConfig(); }
if(isset($this->conf[$setting])){
return $this->conf[$setting];
}else{
return $notset;
}
}
/**
* 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 string $name name of plugin to load
* @param bool $msg if a message should be displayed in case the plugin is not available
*
* @return object helper plugin object
*/
function loadHelper($name, $msg = true){
$obj = plugin_load('helper',$name);
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 from reusing an instance
*
* @return bool false if the plugin has to be instantiated
*/
function isSingleton() {
return true;
}
}