1<?php
2/**
3 * DokuWiki Plugin AmCharts (Syntax Component)
4 *
5 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
6 * @author Sylvain Menu <35niavlys@gmail.com>
7 */
8
9// must be run within Dokuwiki
10if (!defined('DOKU_INC')) die();
11
12class syntax_plugin_amcharts 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        $this->Lexer->addSpecialPattern('<amchart.+?</amchart>',$mode,'plugin_amcharts');
39    }
40
41    /**
42     * Handle matches of the amchart 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), 8, -10);
52        list($opts, $amdata) = explode('>', $match, 2);
53        preg_match_all('/(\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        $amdata = preg_replace_callback(
64            '#//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"#ms',
65            function($matches){
66                $m = $matches[0];
67                return substr($m, 0, 1)==='/' ? ' ' : $m;
68            }, $amdata
69        ); // remove comments (respecting quoted strings)
70        $amdata = explode("\n", $amdata);
71        $amdata = implode("", array_map(trim, $amdata));
72        $chartid = uniqid('__amchart_');
73        $amdata = base64_encode($amdata);
74
75        return array($chartid, $amdata, $opts);
76    }
77
78    /**
79     * Render xhtml output or metadata
80     *
81     * @param string         $mode      Renderer mode (supported modes: xhtml)
82     * @param Doku_Renderer  $renderer  The renderer
83     * @param array          $data      The data from the handler() function
84     * @return bool If rendering was successful.
85     */
86    public function render($mode, Doku_Renderer $renderer, $data) {
87        if($mode != 'xhtml') return false;
88
89        list($chartid, $amdata, $opts) = $data;
90        $s = '';
91        $c = '';
92        foreach($opts as $n => $v) {
93            if(in_array($n, array('width','height')) && $v) {
94                $s .= $n.':'.hsc($v).';';
95            } elseif($n=='align' && in_array($v, array('left','right','center'))) {
96                $c = 'media'.$v;
97            }
98        }
99        if($s) $s = ' style="'.$s.'"';
100        if($c) $c = ' class="'.$c.'"';
101        $renderer->doc .= '<div id="'.$chartid.'"'.$c.$s.' data-amchart="'.$amdata.'"></div>'."\n";
102
103        return true;
104    }
105}