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<?php

/**
 * ---------------------------------------------------------------------
 *
 * GLPI - Gestionnaire Libre de Parc Informatique
 *
 * http://glpi-project.org
 *
 * @copyright 2015-2022 Teclib' and contributors.
 * @copyright 2003-2014 by the INDEPNET Development Team.
 * @licence   https://www.gnu.org/licenses/gpl-3.0.html
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * ---------------------------------------------------------------------
 */

/// XML class
class XML
{
   /// Array of SQL requests to export
    public $SqlString    = "";
   /// 1 there is a problem !!!
    public $IsError      = 0;
   /// If there is an error, this string explains it
    public $ErrorString  = "NO errors;)";
   /// Which format do you want your XML ?
    public $Type         = 1;
   ///path where the file will be saved.
    public $FilePath;

   // HERE I explain $Type

   /* For Example :
      1 (default) each value are in a tag called data
      <dataxml>
      <row>
      <data>value field1 row1</data>
      <data>value field2 row1</data>
      <data>value field3 row1</data>
      </row>
      <row>
      <data>value field1 row2</data>
      <data>value field2 row2</data>
      <data>value field3 row2</data>
      </row>
      </dataxml>

      2 each value is in a tag called dataN , where N is a position of field
      <dataxml>
      <row>
      <data1>value field1 row1</data1>
      <data2>value field2 row1</data2>
      <data3>value field3 row1</data3>
      </row>
      <row>
      <data1>value field1 row2</data1>
      <data2>value field2 row2</data2>
      <data3>value field3 row2</data3>
      </row>
      </dataxml>

      3 each value is in a tag called with the name of field
      <dataxml>
      <row>
      <fieldname1>value field1 row1</fieldname1>
      <fieldname2>value field2 row1</fieldname2>
      <fieldname3>value field3 row1</fieldname3>
      </row>
      <row>
      <fieldname1>value field1 row2</fieldname1>
      <fieldname2>value field2 row2</fieldname2>
      <fieldname3>value field3 row2</fieldname3>
      </row>
      </dataxml>

      4 each value is in a tag with an attributes called fieldname with the name of field
      <dataxml>
      <row>
      <data fieldname="fieldname1">value field1 row1</data>
      <data fieldname="fieldname2">value field1 row1</data>
      <data fieldname="fieldname3">value field1 row1</data>
      </row>
      <row>
      <data fieldname="fieldname1">value field1 row2</data>
      <data fieldname="fieldname2">value field1 row2</data>
      <data fieldname="fieldname3">value field1 row2</data>
      </row>
      </dataxml>
    */

    /**
     * Do XML export
     **/
    public function DoXML()
    {
        global $DB;

        $fp = fopen($this->FilePath, 'wb');
        fputs($fp, "<?xml version=\"1.0\"?>\n");
        fputs($fp, "<dataxml>\n");

        foreach ($this->SqlString as $strqry) {
            if ($strqry == "") {
                $this->IsError     = 1;
                $this->ErrorString = "Error the query can't be a null string";
                return -1;
            }
            $result = $DB->query($strqry);

            if ($result == false) {
                $this->IsError     = 1;
                $this->ErrorString = "Error in SQL Query: " . $strqry;
                return -1;
            }
           // OK... let's create XML;)
            fputs($fp, "   <fields>\n");
            $i = 0;
            $FieldsVector = [];
            while ($i < $DB->numFields($result)) {
                $name = $DB->fieldName($result, $i);
                fputs($fp, "      <field>" . $name . "</field>\n");
                $FieldsVector[] = $name;
                $i++;
            }

            fputs($fp, "   </fields>\n");
           // And NOW the Data ...
            fputs($fp, "   <rows>\n");
            while ($row = $DB->fetchRow($result)) {
                fputs($fp, "      <row>\n");
                for ($j = 0; $j < $i; $j++) {
                    $FieldName  = "";   // Name of TAG
                    $Attributes = "";
                    switch ($this->Type) {
                        case 1:
                            $FieldName = "data";
                            break;

                        case 2:
                            $FieldName = "data" . $j;
                            break;

                        case 3:
                            $FieldName = $FieldsVector[$j];
                            break;

                        case 4:
                            $FieldName = "data";
                            $Attributes = " fieldname=\"" . $FieldsVector[$j] . "\"";
                    }
                    fputs($fp, "         <" . $FieldName . $Attributes . ">" .
                     Toolbox::encodeInUtf8(htmlspecialchars($row[$j])) . "</" . $FieldName . ">\n");
                }
                fputs($fp, "      </row>\n");
            }
            fputs($fp, "   </rows>\n");

            $DB->freeResult($result);
        }
        fputs($fp, "</dataxml>");
       //OK free ...;)
        fclose($fp);
    }
}