for Push.

2026-06-01 12:28:44 +09:00
parent c845fb60a0
commit 33a5d7bbea
28 changed files with 2838 additions and 0 deletions
@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace KssSmaPlaLib.IO.Excel
+{
+    public static class ExcelCellValidatorUxer
+    {
+        /// <summary>
+        /// ExcelのA1形式（例: "A1", "Z99", "AA1000"）かどうかを判定します。
+        /// </summary>
+        /// <param name="cellRef">セル参照文字列</param>
+        /// <returns>有効なA1形式ならtrue、無効ならfalse</returns>
+        public static bool IsValidA1Format(string cellRef)
+        {
+            if (string.IsNullOrWhiteSpace(cellRef))
+                return false;
+
+            // 正規表現でA1形式をチェック（列: A〜XFD、行: 1〜1048576）
+            var match = System.Text.RegularExpressions.Regex.Match(
+                cellRef.ToUpperInvariant(),
+                @"^([A-Z]{1,3})([1-9][0-9]{0,6})$"
+            );
+
+            if (!match.Success)
+                return false;
+
+            string colPart = match.Groups[1].Value;
+            string rowPart = match.Groups[2].Value;
+
+            // 列がXFD（Excel最大列）以内かチェック
+            if (ColumnNameToNumber(colPart) > 16384)
+                return false;
+
+            // 行がExcel最大行以内かチェック
+            if (int.TryParse(rowPart, out int row))
+            {
+                return row >= 1 && row <= 1048576;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// 列名（例: "A", "Z", "AA"）を列番号に変換（例: 1, 26, 27）
+        /// </summary>
+        private static int ColumnNameToNumber(string columnName)
+        {
+            int sum = 0;
+            foreach (char c in columnName)
+            {
+                sum *= 26;
+                sum += (c - 'A' + 1);
+            }
+            return sum;
+        }
+    }
+}