*/
use dokuwiki\Parsing\Parser;
class syntax_plugin_mermaid extends \dokuwiki\Extension\SyntaxPlugin
{
const DOKUWIKI_LINK_START_MERMAID = 'DOKUWIKILINKSTARTMERMAID';
const DOKUWIKI_LINK_END_MERMAID = 'DOKUWIKILINKENDMERMAID';
const DOKUWIKI_LINK_SPLITTER ='--';
private $mermaidCounter = -1;
function enable_gantt_links($instructions)
{
$modified_instructions = $instructions;
for ($i = 0; $i < count($modified_instructions); $i++)
{
if (in_array($modified_instructions[$i][0], ["externallink", "internallink"]))
{
// use the appropriate link
$link = $modified_instructions[$i][0] == "externallink" ? $modified_instructions[$i][1][0] : wl($modified_instructions[$i][1][0], '', true);
// change link here to just the name of the link
$modified_instructions[$i][0]= "cdata";
if(!is_null($modified_instructions[$i][1][1]))
{
unset($modified_instructions[$i][1][0]);
}
// insert the click event
if (preg_match('/(?<=:\s)\S+(?=,)/', $modified_instructions[$i+1][1][0], $output_array))
{
$click_reference = $output_array[0];
}
array_splice($modified_instructions, $i + 2, 0, [["cdata", ["\nclick ".$click_reference." href \"".$link."\"\n"]]]);
// encode colons
$modified_instructions[$i][1][0] = str_replace(":", "#colon;", $modified_instructions[$i][1][0]);
}
}
return $modified_instructions;
}
function protect_brackets_from_dokuwiki($text)
{
$splitText = explode(self::DOKUWIKI_LINK_SPLITTER, $text);
foreach ($splitText as $key => $line)
{
$splitText[$key] = preg_replace('/(?Lexer->addEntryPattern('(?=.*?)',$mode,'plugin_mermaid');
}
function postConnect()
{
$this->Lexer->addExitPattern('','plugin_mermaid');
}
/**
* Handle matches of the Mermaid syntax
*/
function handle($match, $state, $pos, Doku_Handler $handler)
{
switch ($state)
{
case DOKU_LEXER_ENTER:
return array($state, $match);
case DOKU_LEXER_UNMATCHED:
return array($state, $match);
case DOKU_LEXER_EXIT:
return array($state, '');
}
return false;
}
/**
* Render xhtml output or metadata
*/
function render($mode, Doku_Renderer $renderer, $indata)
{
if($mode == 'xhtml'){
list($state, $match) = $indata;
switch ($state) {
case DOKU_LEXER_ENTER:
$this->mermaidCounter++;
$values = explode(" ", $match);
$divwidth = count($values) < 2 ? 'auto' : $values[1];
$divheight = count($values) < 3 ? 'auto' : substr($values[2], 0, -1);
$renderer->doc .= 'mermaidCounter.' style="width:'.$divwidth.'; height:'.$divheight.'">';
break;
case DOKU_LEXER_UNMATCHED:
$explodedMatch = explode("\n", $match);
$israwmode = isset($explodedMatch[1]) && strpos($explodedMatch[1], 'raw') !== false;
if($israwmode)
{
array_shift($explodedMatch);
array_shift($explodedMatch);
$actualContent = implode("\n", $explodedMatch);
$renderer->doc .= $actualContent;
}
else
{
$instructions = $this->p_get_instructions($this->protect_brackets_from_dokuwiki($match));
if (strpos($instructions[2][1][0], "gantt"))
{
$instructions = $this->enable_gantt_links($instructions);
}
$xhtml = $this->remove_protection_of_brackets_from_dokuwiki($this->p_render($instructions));
$renderer->doc .= preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "\n", $xhtml);
}
break;
case DOKU_LEXER_EXIT:
$renderer->doc .= "\r\n";
$renderer->doc .= ' ';
break;
}
return true;
}
return false;
}
/*
* Get the parser instructions suitable for the mermaid
*
*/
function p_get_instructions($text)
{
//import parser classes and mode definitions
require_once DOKU_INC . 'inc/parser/parser.php';
// https://www.dokuwiki.org/devel:parser
// https://www.dokuwiki.org/devel:parser#basic_invocation
// Create the parser and the handler
$Parser = new Parser(new Doku_Handler());
$modes = array();
// add default modes
$std_modes = array( 'internallink', 'media', 'externallink');
foreach($std_modes as $m)
{
$class = 'dokuwiki\\Parsing\\ParserMode\\'.ucfirst($m);
$obj = new $class();
$modes[] = array(
'sort' => $obj->getSort(),
'mode' => $m,
'obj' => $obj
);
}
// add formatting modes
$fmt_modes = array( 'strong', 'emphasis', 'underline', 'monospace', 'subscript', 'superscript', 'deleted');
foreach($fmt_modes as $m)
{
$obj = new \dokuwiki\Parsing\ParserMode\Formatting($m);
$modes[] = array(
'sort' => $obj->getSort(),
'mode' => $m,
'obj' => $obj
);
}
//add modes to parser
foreach($modes as $mode)
{
$Parser->addMode($mode['mode'],$mode['obj']);
}
// Do the parsing
$p = $Parser->parse($text);
return $p;
}
public function p_render($instructions)
{
$Renderer = p_get_renderer('mermaid');
// Loop through the instructions
foreach ($instructions as $instruction) {
if(method_exists($Renderer, $instruction[0])){
call_user_func_array(array(&$Renderer, $instruction[0]), $instruction[1] ? $instruction[1] : array());
}
}
return $Renderer->doc;
}
}