, * Alexander 'E-Razor' Krause * * [WaS] The following plugin is a revision of the GNUplot Plugin by * Alexander 'E-Razor' Krause from 2005 that uses the original gnuplot binary * in order to render graphs that has been patched up to work on modern * DokuWki versions. * */ if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/'); if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/'); require_once(DOKU_PLUGIN.'syntax.php'); /** * All DokuWiki plugins to extend the parser/rendering mechanism * need to inherit from this class */ class syntax_plugin_plotwas extends DokuWiki_Syntax_Plugin { /** * What kind of syntax are we? */ //function accepts($m) { return true; } function getType() { return 'protected'; } function getPType() { return 'normal'; } function getSort() { return 200; } /** * Connect pattern to lexer */ function connectTo($mode) { $this->Lexer->addEntryPattern('Lexer->addExitPattern('', 'plugin_plotwas'); } /** * Handle the match */ function handle($match, $state, $pos, Doku_Handler $handler) { if ( $state == DOKU_LEXER_UNMATCHED ) { $matches = preg_split('/>/u', $match, 2); $matches[0] = trim($matches[0]); if ( trim($matches[0]) == '' ) { $matches[0] = NULL; } return array($matches[1],$matches[0]); } return array($state, '', ''); } /** * Create output */ function render($mode, Doku_Renderer $renderer, $data) { global $conf; if($mode == 'xhtml' && strlen($data[0]) > 1) { if ( !is_dir($conf['mediadir'] . '/plot') ) { mkdir($conf['mediadir'] . '/plot', 0777 - $conf['dmask']); } $hash = md5(serialize($data[0])); $filename = $conf['mediadir'] . '/plot/'.$hash.'.png'; $size_str=$data[1]; if ( is_readable($filename) ) { $renderer->doc .= $this->plugin_render('{{'.'plot:'.$hash.'.png'."$size_str}}"); return true; } if (!$this->createImage($filename, $data[0])) { $renderer->doc .= $this->plugin_render('{{'.'plot:'.$hash.'.png'."$size_str}}"); } else { $renderer->doc .= '**ERROR RENDERING GNUPLOT**'; } return true; } return false; } function createImage($filename, &$data) { $tmpfname = tempnam("/tmp", "dokuwiki.plot"); $data = 'set terminal png transparent nocrop enhanced font arial 8 size 420,320'."\n". "set output '".$filename."'\n" . $data; file_put_contents($tmpfname, $data); $retval = exec('/usr/bin/gnuplot '.$tmpfname); unlink($tmpfname); return 0; } // output text string through the parser, allows dokuwiki markup to be used // very ineffecient for small pieces of data - try not to use function plugin_render($text, $format='xhtml') { return p_render($format, p_get_instructions($text),$info); } }