1: <?php
 2: 
 3: namespace SimpleExcel\Parser;
 4: 
 5: use SimpleExcel\Enums\SimpleExcelException;
 6: use SimpleExcel\Spreadsheet\Workbook;
 7: 
 8: /**
 9:  * SimpleExcel class for parsing HTML table
10:  *  
11:  * @author  Faisalman
12:  * @package SimpleExcel
13:  */ 
14: abstract class BaseParser implements IParser
15: {
16:     /**
17:     * Holds the workbook instance
18:     * 
19:     * @access   protected
20:     * @var      Workbook
21:     */
22:     protected $workbook;
23: 
24:     /**
25:     * Defines valid file extension
26:     * 
27:     * @access   protected
28:     * @var      string
29:     */
30:     protected $file_extension = '';
31: 
32:     /**
33:     * @param    Workbook    reference to workbook
34:     */
35:     public function __construct(&$workbook) {
36:         $this->workbook = &$workbook;
37:     }
38:     
39:     /**
40:     * Check whether file exists, valid, and readable
41:     * 
42:     * @param    string  $file_path  Path to file
43:     * @return   bool
44:     * @throws   Exception           If file being loaded doesn't exist
45:     * @throws   Exception           If file extension doesn't match
46:     * @throws   Exception           If error reading the file
47:     */
48:     protected function checkFile($file_path) {
49:     
50:         // file exists?
51:         if (!file_exists($file_path)) {
52:         
53:             throw new \Exception('File '.$file_path.' doesn\'t exist', SimpleExcelException::FILE_NOT_FOUND);
54:         
55:         // extension valid?
56:         } else if (strtoupper(pathinfo($file_path, PATHINFO_EXTENSION))!= strtoupper($this->file_extension)){
57: 
58:             throw new \Exception('File extension '.$file_extension.' doesn\'t match with '.$this->file_extension, SimpleExcelException::FILE_EXTENSION_MISMATCH);
59:         
60:         // file readable?
61:         } else if (($handle = fopen($file_path, 'r')) === FALSE) {            
62:         
63:             throw new \Exception('Error reading the file in'.$file_path, SimpleExcelException::ERROR_READING_FILE);
64:             fclose($handle);
65:         } else {
66:             return TRUE;
67:         }
68:     }
69: }
70: