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Assets/CoolapeFrame/Scripts/toolkit/ByteEx.cs

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+using System.Collections;
+using System.IO;
+
+namespace Coolape
+{
+	public class ByteEx
+	{
+		public static byte[] readFully (Stream stream)
+		{ 
+			// 初始化一个32k的缓存 
+			byte[] buff = new byte[32768]; 
+			using (MemoryStream ms = new MemoryStream ()) { //返回结果后会自动回收调用该对象的Dispose方法释放内存 
+				// 不停的读取 
+				while (true) { 
+					int read = stream.Read (buff, 0, buff.Length); 
+					// 直到读取完最后的3M数据就可以返回结果了 
+					if (read <= 0)
+						return ms.ToArray (); 
+
+					ms.Write (buff, 0, read); 
+				} 
+			} 
+		}
+
+		public static void readFully4BLength (Stream ns)
+		{
+			int len = NumEx.readInt (ns);
+			byte[] b = new byte[len];
+			readFully (ns, b);
+		}
+
+		public static void readFullyBIO2Length (Stream ns)
+		{
+			int len = B2InputStream.readInt (ns);
+			byte[] b = new byte[len];
+			readFully (ns, b);
+		}
+
+		public static void readFully (Stream ns, byte[] b)
+		{
+			int off = 0;
+			int len = b.Length;
+			readFully (ns, b, off, len);
+		}
+
+		public static void readFully (Stream ns, byte[] b, int off, int len)
+		{
+			if (len < 0)
+				return;
+			int n = 0;
+			int trynum = 1000;
+			while (n < len) {
+				if (trynum-- <= 0)
+					break;
+				int count = ns.Read (b, off + n, len - n);
+				if (count == 0)
+					continue;
+				if (count < 0)
+					return;
+				n += count;
+			}
+		}
+	}
+}