refactor : build System Stability

工具类新增了FileSHA1Safely，FileMD5Safely，FileCRC32Safely等方法。

Assets/YooAsset/Runtime/CacheSystem/CacheHelper.cs

@@ -111,7 +111,7 @@ namespace YooAsset
                 // 再验证文件CRC
                 if (verifyLevel == EVerifyLevel.High)
                 {
-                    string crc = HashUtility.FileCRC32(filePath);
+                    string crc = HashUtility.FileCRC32Safely(filePath);
                     if (crc == fileCRC)
                         return EVerifyResult.Succeed;
                     else

Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/LoadCacheManifestOperation.cs

@@ -77,7 +77,7 @@ namespace YooAsset
                     return;
                 }
 
-                string fileHash = HashUtility.FileMD5(_manifestFilePath);
+                string fileHash = HashUtility.FileMD5Safely(_manifestFilePath);
                 if (fileHash != _queryCachePackageHashOp.PackageHash)
                 {
                     _steps = ESteps.Done;

Assets/YooAsset/Runtime/Utility/YooUtility.cs

@@ -214,13 +214,21 @@ namespace YooAsset
         /// 获取文件的Hash值
         /// </summary>
         public static string FileSHA1(string filePath)
+        {
+            using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
+            {
+                return StreamSHA1(fs);
+            }
+        }
+
+        /// <summary>
+        /// 获取文件的Hash值
+        /// </summary>
+        public static string FileSHA1Safely(string filePath)
         {
             try
             {
-                using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
+                return FileSHA1(filePath);
-                {
-                    return StreamSHA1(fs);
-                }
             }
             catch (Exception e)
             {
@@ -266,13 +274,21 @@ namespace YooAsset
         /// 获取文件的MD5
         /// </summary>
         public static string FileMD5(string filePath)
+        {
+            using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
+            {
+                return StreamMD5(fs);
+            }
+        }
+
+        /// <summary>
+        /// 获取文件的MD5
+        /// </summary>
+        public static string FileMD5Safely(string filePath)
         {
             try
             {
-                using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
+                return FileMD5(filePath);
-                {
-                    return StreamMD5(fs);
-                }
             }
             catch (Exception e)
             {
@@ -316,13 +332,21 @@ namespace YooAsset
         /// 获取文件的CRC32
         /// </summary>
         public static string FileCRC32(string filePath)
+        {
+            using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
+            {
+                return StreamCRC32(fs);
+            }
+        }
+
+        /// <summary>
+        /// 获取文件的CRC32
+        /// </summary>
+        public static string FileCRC32Safely(string filePath)
         {
             try
             {
-                using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
+                return FileCRC32(filePath);
-                {
-                    return StreamCRC32(fs);
-                }
             }
             catch (Exception e)
             {