dokuwiki-gnuplot-plugin – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | <?php |
2 | /** |
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3 | * plot-Plugin: Parses gnuplot-blocks |
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4 | * |
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5 | * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) |
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6 | * @author Alexander 'E-Razor' Krause <alexander.krause@erazor-zone.de> |
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7 | */ |
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8 | |||
9 | if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../').'/'); |
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10 | if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/'); |
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11 | require_once(DOKU_PLUGIN.'syntax.php'); |
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12 | |||
13 | if (!is_callable("file_put_contents")) { |
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14 | @require_once('/usr/lib/php/PHP/Compat/Function/file_put_contents.php'); |
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15 | if (!is_callable("file_put_contents")) { |
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16 | echo 'Please install dev-php/PEAR-PHP_Compat or >=php-5.0.0 !'; |
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17 | } |
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18 | } |
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19 | |||
20 | /** |
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21 | * All DokuWiki plugins to extend the parser/rendering mechanism |
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22 | * need to inherit from this class |
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23 | */ |
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24 | class syntax_plugin_plot extends DokuWiki_Syntax_Plugin { |
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25 | function getInfo(){ |
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26 | return array( |
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27 | 'author' => 'Alexander Krause', |
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28 | 'email' => 'alexander.krause@erazor-zone.de', |
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29 | 'date' => '2006-05-23', |
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30 | 'name' => 'Plot Plugin', |
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31 | 'desc' => 'render functions nicely', |
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32 | 'url' => 'http://wiki.erazor-zone.de/doku.php?id=wiki:projects:php:dokuwiki:plugins:plot' |
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33 | ); |
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34 | } |
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35 | /** |
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36 | * What kind of syntax are we? |
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37 | */ |
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38 | function getType(){ |
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39 | return 'protected'; |
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40 | } |
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41 | |||
42 | /** |
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43 | * Where to sort in? |
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44 | */ |
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45 | function getSort(){ |
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46 | return 100; |
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47 | } |
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48 | |||
49 | |||
50 | /** |
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51 | * Connect pattern to lexer |
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52 | */ |
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53 | function connectTo($mode) { |
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54 | $this->Lexer->addEntryPattern('<plot(?=.*\x3C/plot\x3E)',$mode,'plugin_plot'); |
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55 | } |
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56 | |||
57 | function postConnect() { |
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58 | $this->Lexer->addExitPattern('</plot>','plugin_plot'); |
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59 | } |
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60 | |||
61 | /** |
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62 | * Handle the match |
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63 | */ |
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64 | |||
65 | |||
66 | function handle($match, $state, $pos, Doku_Handler $handler) { |
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67 | if ( $state == DOKU_LEXER_UNMATCHED ) { |
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68 | $matches = preg_split('/>/u',$match,2); |
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69 | $matches[0] = trim($matches[0]); |
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70 | if ( trim($matches[0]) == '' ) { |
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71 | $matches[0] = NULL; |
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72 | } |
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73 | return array($matches[1],$matches[0]); |
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74 | } |
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75 | return TRUE; |
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76 | } |
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77 | /** |
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78 | * Create output |
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79 | */ |
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80 | function render($mode, Doku_Renderer $renderer, $data) { |
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81 | global $conf; |
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82 | if($mode == 'xhtml' && strlen($data[0]) > 1) { |
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83 | if ( !is_dir($conf['mediadir'] . '/plot') ) mkdir($conf['mediadir'] . '/plot', 0777-$conf['dmask']); |
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84 | $hash = md5(serialize($data[0])); |
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85 | $filename = $conf['mediadir'] . '/plot/'.$hash.'.png'; |
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86 | |||
87 | $size_str=$data[1]; |
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88 | |||
89 | if ( is_readable($filename) ) { |
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90 | $renderer->doc .= $this->plugin_render('{{'.'plot:'.$hash.'.png'."$size_str}}"); |
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91 | return true; |
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92 | } |
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93 | |||
94 | if (!$this->createImage($filename, $data[0])) { |
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95 | $renderer->doc .= $this->plugin_render('{{'.'plot:'.$hash.'.png'."$size_str}}"); |
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96 | } else { |
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97 | $renderer->doc .= '**ERROR RENDERING GNUPLOT**'; |
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98 | } |
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99 | return true; |
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100 | } |
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101 | return false; |
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102 | } |
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103 | |||
104 | function createImage($filename, &$data) { |
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105 | global $conf; |
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106 | |||
107 | $tmpfname = tempnam("/tmp", "dokuwiki.plot"); |
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108 | |||
109 | $data = 'set terminal png transparent nocrop enhanced font arial 8 size 420,320'."\n". |
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110 | "set output '".$filename."'\n" . $data; |
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111 | |||
112 | file_put_contents($tmpfname, $data); |
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113 | |||
114 | $retval = exec('/usr/bin/gnuplot '.$tmpfname); |
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115 | |||
116 | unlink($tmpfname); |
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117 | return 0; |
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118 | } |
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119 | |||
120 | // output text string through the parser, allows dokuwiki markup to be used |
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121 | // very ineffecient for small pieces of data - try not to use |
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122 | function plugin_render($text, $format='xhtml') { |
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123 | return p_render($format, p_get_instructions($text),$info); |
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124 | } |
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125 | } |
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126 | |||
127 | ?> |