Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

class cssparser {

  private $css;

  private $html;

  public function __construct($html = true) {

    // Register "destructor"

    core_shutdown_manager::register_function(array(&$this, "finalize"));

    $this->html = ($html != false);

    $this->Clear();

  }

  /**

   * Old syntax of class constructor. Deprecated in PHP7.

   *

   * @deprecated since Moodle 3.1

   */

  public function cssparser($html = true) {

      debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);

      self::__construct($html);

  }

  function finalize() {

    unset($this->css);

  }

  function Clear() {

    unset($this->css);

    $this->css = array();

    if($this->html) {

      $this->Add("ADDRESS", "");

      $this->Add("APPLET", "");

      $this->Add("AREA", "");

      $this->Add("A", "text-decoration : underline; color : Blue;");

      $this->Add("A:visited", "color : Purple;");

      $this->Add("BASE", "");

      $this->Add("BASEFONT", "");

      $this->Add("BIG", "");

      $this->Add("BLOCKQUOTE", "");

      $this->Add("BODY", "");

      $this->Add("BR", "");

      $this->Add("B", "font-weight: bold;");

      $this->Add("CAPTION", "");

      $this->Add("CENTER", "");

      $this->Add("CITE", "");

      $this->Add("CODE", "");

      $this->Add("DD", "");

      $this->Add("DFN", "");

      $this->Add("DIR", "");

      $this->Add("DIV", "");

      $this->Add("DL", "");

      $this->Add("DT", "");

      $this->Add("EM", "");

      $this->Add("FONT", "");

      $this->Add("FORM", "");

      $this->Add("H1", "");

      $this->Add("H2", "");

      $this->Add("H3", "");

      $this->Add("H4", "");

      $this->Add("H5", "");

      $this->Add("H6", "");

      $this->Add("HEAD", "");

      $this->Add("HR", "");

      $this->Add("HTML", "");

      $this->Add("IMG", "");

      $this->Add("INPUT", "");

      $this->Add("ISINDEX", "");

      $this->Add("I", "font-style: italic;");

      $this->Add("KBD", "");

      $this->Add("LINK", "");

      $this->Add("LI", "");

      $this->Add("MAP", "");

      $this->Add("MENU", "");

      $this->Add("META", "");

      $this->Add("OL", "");

      $this->Add("OPTION", "");

      $this->Add("PARAM", "");

      $this->Add("PRE", "");

      $this->Add("P", "");

      $this->Add("SAMP", "");

      $this->Add("SCRIPT", "");

      $this->Add("SELECT", "");

      $this->Add("SMALL", "");

      $this->Add("STRIKE", "");

      $this->Add("STRONG", "");

      $this->Add("STYLE", "");

      $this->Add("SUB", "");

      $this->Add("SUP", "");

      $this->Add("TABLE", "");

      $this->Add("TD", "");

      $this->Add("TEXTAREA", "");

      $this->Add("TH", "");

      $this->Add("TITLE", "");

      $this->Add("TR", "");

      $this->Add("TT", "");

      $this->Add("UL", "");

      $this->Add("U", "text-decoration : underline;");

      $this->Add("VAR", "");

    }

  }

  function SetHTML($html) {

    $this->html = ($html != false);

  }

  function Add($key, $codestr) {

    $key = strtolower($key);

    $codestr = strtolower($codestr);

    if(!isset($this->css[$key])) {

      $this->css[$key] = array();

    }

    $codes = explode(";",$codestr);

    if(count($codes) > 0) {

      $codekey=''; $codevalue='';

      foreach($codes as $code) {

        $code = trim($code);

        $this->assignValues(explode(":",$code),$codekey,$codevalue);

        if(strlen($codekey) > 0) {

          $this->css[$key][trim($codekey)] = trim($codevalue);

        }

      }

    }

  }

  private function assignValues($arr,&$val1,&$val2) {

      $n = count($arr);

      if ($n > 0) {

          $val1=$arr[0];

          $val2=($n > 1) ? $arr[1] : '';

      }

  }

  function Get($key, $property) {

    $key = strtolower($key);

    $property = strtolower($property);

    $tag='';$subtag='';$class='';$id='';

    $this->assignValues(explode(":",$key),$tag,$subtag);

    $this->assignValues(explode(".",$tag),$tag,$class);

    $this->assignValues(explode("#",$tag),$tag,$id);

    $result = "";

    $_subtag=''; $_class=''; $_id='';

    foreach($this->css as $_tag => $value) {

      $this->assignValues(explode(":",$_tag),$_tag,$_subtag);

      $this->assignValues(explode(".",$_tag),$_tag,$_class);

      $this->assignValues(explode("#",$_tag),$_tag,$_id);

      $tagmatch = (strcmp($tag, $_tag) == 0) | (strlen($_tag) == 0);

      $subtagmatch = (strcmp($subtag, $_subtag) == 0) | (strlen($_subtag) == 0);

      $classmatch = (strcmp($class, $_class) == 0) | (strlen($_class) == 0);

      $idmatch = (strcmp($id, $_id) == 0);

      if($tagmatch & $subtagmatch & $classmatch & $idmatch) {

        $temp = $_tag;

        if((strlen($temp) > 0) & (strlen($_class) > 0)) {

          $temp .= ".".$_class;

        } elseif(strlen($temp) == 0) {

          $temp = ".".$_class;

        }

        if((strlen($temp) > 0) & (strlen($_subtag) > 0)) {

          $temp .= ":".$_subtag;

        } elseif(strlen($temp) == 0) {

          $temp = ":".$_subtag;

        }

        if(isset($this->css[$temp][$property])) {

          $result = $this->css[$temp][$property];

        }

      }

    }

    return $result;

  }

  function GetSection($key) {

    $key = strtolower($key);

    $tag='';$subtag='';$class='';$id='';

    $_subtag=''; $_class=''; $_id='';

    $this->assignValues(explode(":",$key),$tag,$subtag);

    $this->assignValues(explode(".",$tag),$tag,$class);

    $this->assignValues(explode("#",$tag),$tag,$id);

    $result = array();

    foreach($this->css as $_tag => $value) {

      $this->assignValues(explode(":",$_tag),$_tag,$_subtag);

      $this->assignValues(explode(".",$_tag),$_tag,$_class);

      $this->assignValues(explode("#",$_tag),$_tag,$_id);

      $tagmatch = (strcmp($tag, $_tag) == 0) | (strlen($_tag) == 0);

      $subtagmatch = (strcmp($subtag, $_subtag) == 0) | (strlen($_subtag) == 0);

      $classmatch = (strcmp($class, $_class) == 0) | (strlen($_class) == 0);

      $idmatch = (strcmp($id, $_id) == 0);

      if($tagmatch & $subtagmatch & $classmatch & $idmatch) {

        $temp = $_tag;

        if((strlen($temp) > 0) & (strlen($_class) > 0)) {

          $temp .= ".".$_class;

        } elseif(strlen($temp) == 0) {

          $temp = ".".$_class;

        }

        if((strlen($temp) > 0) & (strlen($_subtag) > 0)) {

          $temp .= ":".$_subtag;

        } elseif(strlen($temp) == 0) {

          $temp = ":".$_subtag;

        }

        foreach($this->css[$temp] as $property => $value) {

          $result[$property] = $value;

        }

      }

    }

    return $result;

  }

  function ParseStr($str) {

    $this->Clear();

    // Remove comments

    $str = preg_replace("/\/\*(.*)?\*\//Usi", "", $str);

    // Parse this damn csscode

    $parts = explode("}",$str);

    if(count($parts) > 0) {

      foreach($parts as $part) {

        $keystr='';$codestr='';

        $this->assignValues(explode("{",$part),$keystr,$codestr);

        $keys = explode(",",trim($keystr));

        if(count($keys) > 0) {

          foreach($keys as $key) {

            if(strlen($key) > 0) {

              $key = str_replace("\n", "", $key);

              $key = str_replace("\\", "", $key);

              $this->Add($key, trim($codestr));

            }

          }

        }

      }

    }

    //

    return (count($this->css) > 0);

  }

  function Parse($filename) {

    $this->Clear();

    if(file_exists($filename)) {

      return $this->ParseStr(file_get_contents($filename));

    } else {

      return false;

    }

  }

  function GetCSS() {

    $result = "";

    foreach($this->css as $key => $values) {

      $result .= $key." {\n";

      foreach($values as $key => $value) {

        $result .= "  $key: $value;\n";

      }

      $result .= "}\n\n";

    }

    return $result;

  }

}