1<?php
2/**
3 * DokuWiki Plugin c3chart (Syntax Component)
4 *
5 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
6 * @author  Jason Xun Xu <dev@jasonxu.net>
7 */
8
9// must be run within Dokuwiki
10if (!defined('DOKU_INC')) die();
11
12class syntax_plugin_c3chart extends DokuWiki_Syntax_Plugin {
13    /**
14     * @return string Syntax mode type
15     */
16    public function getType() {
17        return 'substition';
18    }
19    /**
20     * @return string Paragraph type
21     */
22    public function getPType() {
23        return 'block';
24    }
25    /**
26     * @return int Sort order - Low numbers go before high numbers
27     */
28    public function getSort() {
29        return 200;
30    }
31
32    /**
33     * Connect lookup pattern to lexer.
34     *
35     * @param string $mode Parser mode
36     */
37    public function connectTo($mode) {
38        $this->Lexer->addSpecialPattern('<c3.+?</c3>',$mode,'plugin_c3chart');
39    }
40
41    /**
42     * Handle matches of the c3chart syntax
43     *
44     * @param string $match The match of the syntax
45     * @param int    $state The state of the handler
46     * @param int    $pos The position in the document
47     * @param Doku_Handler    $handler The handler
48     * @return array Data for the renderer
49     */
50    public function handle($match, $state, $pos, Doku_Handler $handler){
51        $match = substr(trim($match), 3, -5);
52        list($opts, $c3data) = explode('>', $match, 2);
53        preg_match_all('/(\\w+)\s*=\\s*([^"\'\\s>]*)/', $opts, $matches, PREG_SET_ORDER);
54        $opts = array(
55            'width' => $this->getConf('width'),
56            'height' => $this->getConf('height'),
57            'align' => $this->getConf('align'),
58        );
59        foreach($matches as $m) {
60            $opts[strtolower($m[1])] = $m[2];
61        }
62
63        $c3data = preg_replace_callback(
64            '#//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"#ms',
65            function($matches){
66                $m = $matches[0];
67                return substr($m, 0, 1)==='/' ? ' ' : $m;
68            }, $c3data
69        ); // remove comments (respecting quoted strings)
70        $c3data = explode("\n", $c3data);
71        $c3data = implode("", array_map(trim, $c3data));
72        if($c3data[0]=='{') $c3data = substr($c3data, 1, -1);
73        $chartid = uniqid('__c3chart_');
74        $c3data = base64_encode('{"bindto": "#'.$chartid.'",'.$c3data.'}');
75
76        return array($chartid, $c3data, $opts);
77    }
78
79    /**
80     * Render xhtml output or metadata
81     *
82     * @param string         $mode      Renderer mode (supported modes: xhtml)
83     * @param Doku_Renderer  $renderer  The renderer
84     * @param array          $data      The data from the handler() function
85     * @return bool If rendering was successful.
86     */
87    public function render($mode, Doku_Renderer $renderer, $data) {
88        if($mode != 'xhtml') return false;
89
90        list($chartid, $c3data, $opts) = $data;
91        $s = '';
92        $c = '';
93        foreach($opts as $n => $v) {
94            if(in_array($n, array('width','height')) && $v) {
95                $s .= $n.':'.hsc($v).';';
96            } elseif($n=='align' && in_array($v, array('left','right','center'))) {
97                $c = 'media'.$v;
98            }
99        }
100        if($s) $s = ' style="'.$s.'"';
101        if($c) $c = ' class="'.$c.'"';
102        $renderer->doc .= '<div id="'.$chartid.'"'.$c.$s.' data-c3chart="'.$c3data.'"></div>'."\n";
103
104        return true;
105    }
106}
107
108// vim:ts=4:sw=4:et:
109