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   1  <?php
   2  
   3  /**
   4   * Converts HTMLPurifier_ConfigSchema_Interchange to an XML format,
   5   * which can be further processed to generate documentation.
   6   */
   7  class HTMLPurifier_ConfigSchema_Builder_Xml extends XMLWriter
   8  {
   9  
  10      /**
  11       * @type HTMLPurifier_ConfigSchema_Interchange
  12       */
  13      protected $interchange;
  14  
  15      /**
  16       * @type string
  17       */
  18      private $namespace;
  19  
  20      /**
  21       * @param string $html
  22       */
  23      protected function writeHTMLDiv($html)
  24      {
  25          $this->startElement('div');
  26  
  27          $purifier = HTMLPurifier::getInstance();
  28          $html = $purifier->purify($html);
  29          $this->writeAttribute('xmlns', 'http://www.w3.org/1999/xhtml');
  30          $this->writeRaw($html);
  31  
  32          $this->endElement(); // div
  33      }
  34  
  35      /**
  36       * @param mixed $var
  37       * @return string
  38       */
  39      protected function export($var)
  40      {
  41          if ($var === array()) {
  42              return 'array()';
  43          }
  44          return var_export($var, true);
  45      }
  46  
  47      /**
  48       * @param HTMLPurifier_ConfigSchema_Interchange $interchange
  49       */
  50      public function build($interchange)
  51      {
  52          // global access, only use as last resort
  53          $this->interchange = $interchange;
  54  
  55          $this->setIndent(true);
  56          $this->startDocument('1.0', 'UTF-8');
  57          $this->startElement('configdoc');
  58          $this->writeElement('title', $interchange->name);
  59  
  60          foreach ($interchange->directives as $directive) {
  61              $this->buildDirective($directive);
  62          }
  63  
  64          if ($this->namespace) {
  65              $this->endElement();
  66          } // namespace
  67  
  68          $this->endElement(); // configdoc
  69          $this->flush();
  70      }
  71  
  72      /**
  73       * @param HTMLPurifier_ConfigSchema_Interchange_Directive $directive
  74       */
  75      public function buildDirective($directive)
  76      {
  77          // Kludge, although I suppose having a notion of a "root namespace"
  78          // certainly makes things look nicer when documentation is built.
  79          // Depends on things being sorted.
  80          if (!$this->namespace || $this->namespace !== $directive->id->getRootNamespace()) {
  81              if ($this->namespace) {
  82                  $this->endElement();
  83              } // namespace
  84              $this->namespace = $directive->id->getRootNamespace();
  85              $this->startElement('namespace');
  86              $this->writeAttribute('id', $this->namespace);
  87              $this->writeElement('name', $this->namespace);
  88          }
  89  
  90          $this->startElement('directive');
  91          $this->writeAttribute('id', $directive->id->toString());
  92  
  93          $this->writeElement('name', $directive->id->getDirective());
  94  
  95          $this->startElement('aliases');
  96          foreach ($directive->aliases as $alias) {
  97              $this->writeElement('alias', $alias->toString());
  98          }
  99          $this->endElement(); // aliases
 100  
 101          $this->startElement('constraints');
 102          if ($directive->version) {
 103              $this->writeElement('version', $directive->version);
 104          }
 105          $this->startElement('type');
 106          if ($directive->typeAllowsNull) {
 107              $this->writeAttribute('allow-null', 'yes');
 108          }
 109          $this->text($directive->type);
 110          $this->endElement(); // type
 111          if ($directive->allowed) {
 112              $this->startElement('allowed');
 113              foreach ($directive->allowed as $value => $x) {
 114                  $this->writeElement('value', $value);
 115              }
 116              $this->endElement(); // allowed
 117          }
 118          $this->writeElement('default', $this->export($directive->default));
 119          $this->writeAttribute('xml:space', 'preserve');
 120          if ($directive->external) {
 121              $this->startElement('external');
 122              foreach ($directive->external as $project) {
 123                  $this->writeElement('project', $project);
 124              }
 125              $this->endElement();
 126          }
 127          $this->endElement(); // constraints
 128  
 129          if ($directive->deprecatedVersion) {
 130              $this->startElement('deprecated');
 131              $this->writeElement('version', $directive->deprecatedVersion);
 132              $this->writeElement('use', $directive->deprecatedUse->toString());
 133              $this->endElement(); // deprecated
 134          }
 135  
 136          $this->startElement('description');
 137          $this->writeHTMLDiv($directive->description);
 138          $this->endElement(); // description
 139  
 140          $this->endElement(); // directive
 141      }
 142  }
 143  
 144  // vim: et sw=4 sts=4