1 files changed, 70 insertions, 0 deletions
diff --git a/src/Util/Sheet.php b/src/Util/Sheet.php
new file mode 100644
index 0000000..6e11e1d
--- /dev/null
+++ b/src/Util/Sheet.php
@@ -0,0 +1,70 @@
+<?php
+
+
+namespace PHPExcel\StyleFixer\Util;
+
+
+class Sheet
+{
+
+    /**
+     * セル番地がExcel形式のセル範囲(コロン区切りのみ対応)に含まれるかどうか
+     *
+     * @param string $coordinate
+     * @param string $cellRange
+     * @return bool
+     */
+    public function inRange($coordinate, $cellRange)
+    {
+        // 絶対参照の$を削除
+        $cellRange = str_replace('$', '', $cellRange);
+        list($startCell, $endCell) = explode(':', $cellRange);
+
+        // 行の範囲チェック
+        $rowNumber = $this->detectRowNumberFromCoordinate($coordinate);
+        if ($rowNumber < $this->detectRowNumberFromCoordinate($startCell) || $rowNumber > $this->detectRowNumberFromCoordinate($endCell)) {
+            return false;
+        }
+
+        // 列の範囲チェック
+        $colNumber = $this->detectColNumberFromCoordinate($coordinate);
+        if ($colNumber < $this->detectColNumberFromCoordinate($startCell) || $colNumber > $this->detectColNumberFromCoordinate($endCell)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * セル番地から行番号を取り出す
+     *
+     * @param string $coordinate
+     * @return int
+     */
+    private function detectRowNumberFromCoordinate($coordinate)
+    {
+        return intval(preg_replace('/[A-Z]+/', '', $coordinate));
+    }
+
+    /**
+     * セル番地から列番号を取り出す
+     *
+     * @param string $coordinate
+     * @return int
+     */
+    private function detectColNumberFromCoordinate($coordinate)
+    {
+        $char = preg_replace('/\d+/', '', $coordinate);
+
+        $charA = 65;
+
+        if (strlen($char) == 1) {
+            return ord($char) - $charA + 1;
+        }
+
+        $quot = ord($char[0]) - $charA + 1;
+        $mod = ord($char[1]) - $charA + 1;
+
+        return $quot * 26 + $mod;
+    }
+}