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<?php
/**
* Syntax Plugin Prototype
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_INC.'inc/parser/parser.php');
/**
* All DokuWiki plugins to extend the parser/rendering mechanism
* need to inherit from this class
*/
class DokuWiki_Syntax_Plugin extends Doku_Parser_Mode {
var $allowedModesSetup = false;
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 $conf = array(); // array to hold plugin settings, best accessed via ->getConf()
/**
* General Info
*
* Needs to return a associative array with the following values:
*
* author - Author of the plugin
* email - Email address to contact the author
* date - Last modified date of the plugin in YYYY-MM-DD format
* name - Name of the plugin
* desc - Short description of the plugin (Text only)
* url - Website with more information on the plugin (eg. syntax description)
*/
function getInfo(){
trigger_error('getType() not implemented in '.get_class($this), E_USER_WARNING);
}
/**
* Syntax Type
*
* Needs to return one of the mode types defined in $PARSER_MODES in parser.php
*/
function getType(){
trigger_error('getType() not implemented in '.get_class($this), E_USER_WARNING);
}
/**
* Allowed Mode Types
*
* Defines the mode types for other dokuwiki markup that maybe nested within the
* plugin's own markup. Needs to return an array of one or more of the mode types
* defined in $PARSER_MODES in parser.php
*/
function getAllowedTypes() {
return array();
}
/**
* Paragraph Type
*
* Defines how this syntax is handled regarding paragraphs. This is important
* for correct XHTML nesting. Should return one of the following:
*
* 'normal' - The plugin can be used inside paragraphs
* 'block' - Open paragraphs need to be closed before plugin output
* 'stack' - Special case. Plugin wraps other paragraphs.
*
* @see Doku_Handler_Block
*/
function getPType(){
return 'normal';
}
/**
* Handler to prepare matched data for the rendering process
*
* This function can only pass data to render() via its return value - render()
* may be not be run during the object's current life.
*
* Usually you should only need the $match param.
*
* @param $match string The text matched by the patterns
* @param $state int The lexer state for the match
* @param $pos int The character position of the matched text
* @param $handler ref Reference to the Doku_Handler object
* @return array Return an array with all data you want to use in render
*/
function handle($match, $state, $pos, &$handler){
trigger_error('handle() not implemented in '.get_class($this), E_USER_WARNING);
}
/**
* Handles the actual output creation.
*
* The function must not assume any other of the classes methods have been run
* during the object's current life. The only reliable data it receives are its
* parameters.
*
* The function should always check for the given output format and return false
* when a format isn't supported.
*
* $renderer contains a reference to the renderer object which is
* currently handling the rendering. You need to use it for writing
* the output. How this is done depends on the renderer used (specified
* by $format
*
* The contents of the $data array depends on what the handler() function above
* created
*
* @param $format string output format being rendered
* @param $renderer ref reference to the current renderer object
* @param $data array data created by handler()
* @return boolean rendered correctly?
*/
function render($format, &$renderer, $data) {
trigger_error('render() not implemented in '.get_class($this), E_USER_WARNING);
}
/**
* There should be no need to override these functions
*/
function accepts($mode) {
if (!$this->allowedModesSetup) {
global $PARSER_MODES;
$allowedModeTypes = $this->getAllowedTypes();
foreach($allowedModeTypes as $mt) {
$this->allowedModes = array_merge($this->allowedModes, $PARSER_MODES[$mt]);
}
$idx = array_search(substr(get_class($this), 7), (array) $this->allowedModes);
if ($idx !== false) {
unset($this->allowedModes[$idx]);
}
$this->allowedModesSetup = true;
}
return parent::accepts($mode);
}
// 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 wiki page 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/';
// 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;
}
}
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