1: <?php
 2: 
 3: namespace SimpleExcel\Writer;
 4: 
 5: use SimpleExcel\Enums\SimpleExcelException;
 6: use SimpleExcel\Spreadsheet\Workbook;
 7: 
 8: /**
 9:  * SimpleExcel base class for writing spreadsheet
10:  *  
11:  * @author  Faisalman
12:  * @package SimpleExcel
13:  */
14: abstract class BaseWriter implements IWriter
15: {
16:     /**
17:     * Holds the workbook instance
18:     * 
19:     * @access   protected
20:     * @var      Workbook
21:     */
22:     protected $workbook;
23: 
24:     /**
25:      * Defines content-type for HTTP header
26:      * 
27:      * @access  protected
28:      * @var     string
29:      */
30:     protected $content_type = 'text';
31: 
32:     /**
33:      * Defines file extension to be used when saving file
34:      * 
35:      * @access  protected
36:      * @var     string
37:      */
38:     protected $file_extension = 'txt';
39: 
40:     /**
41:      * @param   Workbook    reference to workbook
42:      */
43:     public function __construct(&$workbook){
44:         $this->workbook = &$workbook;
45:     }
46: 
47:     /**
48:      * @param    string  $target     File pointer
49:      * @param    array   $options    Options
50:      */
51:     public function exportFile ($target, $options = NULL) {
52:         // check if target is browser
53:         if ($is_browser = (PHP_SAPI != 'cli' && $target == 'php://output')) {
54:             if (!isset($options['filename'])) {
55:                 $options['filename'] = date('Y-m-d-H-i-s');
56:             }
57:             if (strcasecmp(substr($options['filename'], strlen($this->file_extension) * -1), $this->file_extension) != 0) {
58:                 $options['filename'] = $options['filename'] . '.' . $this->file_extension;
59:             }
60:             // set HTTP response header
61:             header('Content-Type: '.$this->content_type);
62:             header('Content-Disposition: attachment; filename='.$options['filename']);
63:         }
64: 
65:         $fp = fopen($target, 'w');
66:         fwrite($fp, $this->toString());
67:         fclose($fp);
68: 
69:         // since there must be no data below exported document
70:         if ($is_browser) {
71:             exit();
72:         }
73:     }
74: 
75:     /**
76:      * @return  string
77:      */
78:     public function toString ($options = NULL) {
79:         throw new \BadMethodCallException('Unimplemented method', SimpleExcelException::UNIMPLEMENTED_METHOD);
80:     }
81: }