====== color plugin ======

colorタグでテキストをカラーにできる。
  <color red>red</color>
<color red>red</color>

===== インストール =====
pluginフォルダ内にsyntax.phpとcolornames.phpを作成
  # cd dokuwiki/lib/plugin/
  # mkdir color
  # vi color/syntax.php
 
  * syntax.phpの中身

  <?php
  /**
   * Plugin Color: Sets new colors for text and background.
   * 
   * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
   * @author     Christopher Smith <chris@jalakai.co.uk>
   */
   
  // must be run within DokuWiki
  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_color extends DokuWiki_Syntax_Plugin {
   
      var $odt_styles = array();
      /**
       * return some info
       */
      function getInfo(){
          return array(
              'author' => 'Christopher Smith',
              'email'  => 'chris@jalakai.co.uk',
              'date'   => '2009-06-24',
              'name'   => 'Color Plugin with ODT',
              'desc'   => 'Changes text colour and background',
              'url'    => 'http://www.dokuwiki.org/plugin:tutorial',
          );
      }
   
      function getType(){ return 'formatting'; }
      function getAllowedTypes() { return array('formatting', 'substition', 'disabled'); }   
      function getSort(){ return 158; }
      function connectTo($mode) { $this->Lexer->addEntryPattern('<color.*?>(?=.*?</color>)',$mode,'plugin_color'); }
      function postConnect() { $this->Lexer->addExitPattern('</color>','plugin_color'); }
   
   
      /**
       * Handle the match
       */
      function handle($match, $state, $pos, &$handler){
          switch ($state) {
            case DOKU_LEXER_ENTER :
                  list($color, $background) = preg_split("/\//u", substr($match, 6, -1), 2);
                  $color = $this->_isValid($color); 
                  $background = $this->_isValid($background); 
                  return array($state, array($color, $background));
   
            case DOKU_LEXER_UNMATCHED :  return array($state, $match);
            case DOKU_LEXER_EXIT :       return array($state, '');
          }
          return array();
      }
   
      /**
       * Create output
       */
      function render($mode, &$renderer, $data) {
          if($mode == 'xhtml'){
              list($state, $match) = $data;
              switch ($state) {
                case DOKU_LEXER_ENTER :
                  list($color, $background) = $match;
                  $color = $color?"color:$color;":"";
                  $background = $background?"background-color:$background;":"";
                  $renderer->doc .= "<span style='$color $background'>";
                  break;
   
                case DOKU_LEXER_UNMATCHED :  $renderer->doc .= $renderer->_xmlEntities($match); break;
                case DOKU_LEXER_EXIT :       $renderer->doc .= "</span>"; break;
              }
              return true;
          }
          if($mode == 'odt'){
            list($state, $match) = $data;
              switch ($state) {
                case DOKU_LEXER_ENTER :
                  list($color, $background) = $match;
                  $style_index = $color.'/'.$background;
                  if(empty($this->odt_styles[$style_index]))
                  {
                    $stylename = "ColorizedText".count($this->odt_styles);
                    $this->odt_styles[$style_index] = $stylename;
                    $color = $color?'fo:color="'.$this->_color2hex($color).'" ':'';
                    $background = $background?'fo:background="'.$this->_color2hex($background).'" ':'';
                    $renderer->autostyles[$stylename] = '
                    <style:style style:name="'.$stylename.'" style:family="text">
                        <style:text-properties '.$color.$background.'/>
                    </style:style>';
                  }
                  $renderer->doc .= '<text:span text:style-name="'.$this->odt_styles[$style_index].'">';
                  break;
   
                case DOKU_LEXER_UNMATCHED :  $renderer->doc .= $renderer->_xmlEntities($match); break;
                case DOKU_LEXER_EXIT :       $renderer->doc .= "</text:span>"; break;
              }
              return true;
          }
          return false;
      }
   
      // validate color value $c
      // this is cut price validation - only to ensure the basic format is correct and there is nothing harmful
      // three basic formats  "colorname", "#fff[fff]", "rgb(255[%],255[%],255[%])"
      function _isValid($c) {
          $c = trim($c);
   
          $pattern = "/^\s*(
              ([a-zA-z]+)|                                #colorname - not verified
              (\#([0-9a-fA-F]{3}|[0-9a-fA-F]{6}))|        #colorvalue
              (rgb\(([0-9]{1,3}%?,){2}[0-9]{1,3}%?\))     #rgb triplet
              )\s*$/x";
   
          if (preg_match($pattern, $c)) return $c;
   
          return "";
      }
      /**
       * Translate color names and RGB to hex values
       */
      function _color2hex($name)
      {
        static $colornames = null;
        if(is_null($colornames))
        {
          include dirname(__FILE__).'/colornames.php';
        }
        if(!preg_match('/^(#|rgb)/', $name) && array_key_exists($name, $colornames))
          return $colornames[$name];
        elseif(preg_match('/rgb\(([0-9]{1,3}%?),([0-9]{1,3}%?),([0-9]{1,3}%?)\)/', $name, $matches))
        {
          $colors = array();
          for($i=1;$i<4;$i++)
          {
            $percent = substr($matches[$i], -1, 1) == '%';
            $colors[$i] = $percent?(substr($matches[$i],0,-1)/100)*256:$matches[$i];
          }
          return sprintf('#%02X%02X%02X', $colors[1], $colors[2], $colors[3]);
        }
        else
          return $name;
      }
  }
   
   
  //Setup VIM: ex: et ts=4 enc=utf-8 :
  ?>

  * colornames.phpの中身

  <?php
   
  // HTML 4.01 color names 
  $colornames = array(
    'black'   => '#000000',
    'navy'    => '#000080',
    'blue'    => '#0000FF',
    'green'   => '#008000',
    'teal'    => '#008080',
    'lime'    => '#00FF00',
    'aqua'    => '#00FFFF',
    'maroon'  => '#800000',
    'purple'  => '#800080',
    'olive'   => '#808000',
    'gray'    => '#808080',
    'silver'  => '#C0C0C0',
    'red'     => '#FF0000',
    'fuchsia' => '#FF00FF',
    'yellow'  => '#FFFF00',
    'white'   => '#FFFFFF',
    'orange'  => '#FFA500' // From CSS 2.1 spec
  );
  ?>

{{tag>dokuwiki:plugins syntax}}