ow

CloudBuilder.Core/Utility/RSA_Unit.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace System
+{
+    /// <summary>
+    /// 封装的一些通用方法
+    /// </summary>
+    public class RSA_Unit
+    {
+        static public string Base64EncodeBytes(byte[] byts)
+        {
+            return Convert.ToBase64String(byts);
+        }
+        static public byte[] Base64DecodeBytes(string str)
+        {
+            try
+            {
+                return Convert.FromBase64String(str);
+            }
+            catch
+            {
+                return null;
+            }
+        }
+        /// <summary>
+        /// 把字符串按每行多少个字断行
+        /// </summary>
+        static public string TextBreak(string text, int line)
+        {
+            var idx = 0;
+            var len = text.Length;
+            var str = new StringBuilder();
+            while (idx < len)
+            {
+                if (idx > 0)
+                {
+                    str.Append('\n');
+                }
+                if (idx + line >= len)
+                {
+                    str.Append(text.Substring(idx));
+                }
+                else
+                {
+                    str.Append(text.Substring(idx, line));
+                }
+                idx += line;
+            }
+            return str.ToString();
+        }
+    }
+
+    static public class Extensions
+    {
+        /// <summary>
+        /// 从数组start开始到指定长度复制一份
+        /// </summary>
+        static public T[] sub<T>(this T[] arr, int start, int count)
+        {
+            T[] val = new T[count];
+            for (var i = 0; i < count; i++)
+            {
+                val[i] = arr[start + i];
+            }
+            return val;
+        }
+        static public void writeAll(this Stream stream, byte[] byts)
+        {
+            stream.Write(byts, 0, byts.Length);
+        }
+    }
+}