Merge pull request #1 from lijupm/active_sheet_support

Adding support for 'getActiveSheet' method

src/Spout/Reader/XLSX/Helper/SheetHelper.php

@@ -72,6 +72,28 @@ class SheetHelper
         return $sheets;
     }
 
+    /**
+     * Get active sheet index
+     *
+     * @return int index of active sheet
+     */
+    public function getActiveSheetIndex()
+    {
+        $activeSheetIndex = 0;
+
+        $xmlReader = new XMLReader();
+        if ($xmlReader->openFileInZip($this->filePath, self::WORKBOOK_XML_FILE_PATH)) {
+            while ($xmlReader->read()) {
+                if ($xmlReader->isPositionedOnStartingNode('workbookView')) {
+                    $activeSheetIndex = $xmlReader->getAttribute('activeTab');
+                }
+            }
+            $xmlReader->close();
+        }
+
+        return $activeSheetIndex;
+    }
+
     /**
      * Returns an instance of a sheet, given the XML node describing the sheet - from "workbook.xml".
      * We can find the XML file path describing the sheet inside "workbook.xml.res", by mapping with the sheet ID

src/Spout/Reader/XLSX/SheetIterator.php

@@ -20,6 +20,9 @@ class SheetIterator implements IteratorInterface
     /** @var int The index of the sheet being read (zero-based) */
     protected $currentSheetIndex;
 
+    /** @var  int The index of the sheet which is active */
+    protected $activeSheetIndex;
+
     /**
      * @param string $filePath Path of the file to be read
      * @param \Box\Spout\Reader\XLSX\ReaderOptions $options Reader's current options
@@ -32,12 +35,23 @@ class SheetIterator implements IteratorInterface
         // Fetch all available sheets
         $sheetHelper = new SheetHelper($filePath, $options, $sharedStringsHelper, $globalFunctionsHelper);
         $this->sheets = $sheetHelper->getSheets();
+        $this->activeSheetIndex = $sheetHelper->getActiveSheetIndex();
 
         if (count($this->sheets) === 0) {
             throw new NoSheetsFoundException('The file must contain at least one sheet.');
         }
     }
 
+    /**
+     * Retrieve active sheet
+     *
+     * @return Sheet
+     */
+    public function getActiveSheet()
+    {
+        return $this->sheets[$this->activeSheetIndex];
+    }
+
     /**
      * Rewind the Iterator to the first element
      * @link http://php.net/manual/en/iterator.rewind.php