Refactor drill tape reading and reorder logic

CommandTypeFileReader.cs

@@ -0,0 +1,92 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+namespace DrillTools
+{
+    internal static class CommandTypeFileReader
+    {
+        private const int Gb2312CodePage = 936;
+
+        private static readonly char[] ForbiddenPathChars =
+        {
+            '&', '|', '<', '>', '^', '%', '!', '(', ')', '@', '"', '\r', '\n'
+        };
+
+        public static string ReadAllText(string filePath)
+        {
+            return ReadAllText(filePath, CreateAnsiEncoding());
+        }
+
+        public static string ReadAllText(string filePath, Encoding encoding)
+        {
+            string normalizedPath = ValidateAndNormalizePath(filePath);
+
+            using var process = new Process
+            {
+                StartInfo = CreateStartInfo(normalizedPath, encoding)
+            };
+
+            if (!process.Start())
+                throw new InvalidOperationException("无法启动文件读取进程");
+
+            var outputTask = process.StandardOutput.ReadToEndAsync();
+            var errorTask = process.StandardError.ReadToEndAsync();
+            process.WaitForExit();
+
+            string output = outputTask.GetAwaiter().GetResult();
+            string error = errorTask.GetAwaiter().GetResult();
+
+            if (process.ExitCode != 0)
+                throw new InvalidOperationException($"读取文件失败，退出代码：{process.ExitCode}，错误：{error.Trim()}");
+
+            return output;
+        }
+
+        private static ProcessStartInfo CreateStartInfo(string filePath, Encoding encoding)
+        {
+            return new ProcessStartInfo
+            {
+                FileName = "cmd.exe",
+                Arguments = $"/d /c type \"{filePath}\"",
+                RedirectStandardOutput = true,
+                RedirectStandardError = true,
+                UseShellExecute = false,
+                CreateNoWindow = true,
+                StandardOutputEncoding = encoding,
+                StandardErrorEncoding = encoding
+            };
+        }
+
+        private static string ValidateAndNormalizePath(string filePath)
+        {
+            if (string.IsNullOrWhiteSpace(filePath))
+                throw new ArgumentException("文件路径不能为空", nameof(filePath));
+
+            if (filePath.IndexOfAny(ForbiddenPathChars) >= 0)
+                throw new ArgumentException("文件路径包含不允许的命令行特殊字符", nameof(filePath));
+
+            string normalizedPath = Path.GetFullPath(filePath);
+            if (normalizedPath.IndexOfAny(ForbiddenPathChars) >= 0)
+                throw new ArgumentException("文件路径包含不允许的命令行特殊字符", nameof(filePath));
+
+            if (!File.Exists(normalizedPath))
+                throw new FileNotFoundException($"文件不存在：{normalizedPath}", normalizedPath);
+
+            return normalizedPath;
+        }
+
+        private static Encoding CreateAnsiEncoding()
+        {
+            try
+            {
+                return Encoding.GetEncoding(Gb2312CodePage);
+            }
+            catch
+            {
+                return Encoding.Default;
+            }
+        }
+    }
+}