BN089-BS开发框架MVC4版/source20131023/Zephyr.Net/Zephyr.Utils/Document/Excel/ExcelLibrary/CodeLib/StreamHelper.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace QiHe.CodeLib
{
    /// <summary>
    /// This class represents a Stream Helper.
    /// </summary>
    public class StreamHelper
    {
        /// <summary>
        /// Write Byte Order Mark(BOM) of streamWriter's Encoding
        /// to streamWriter's underlying stream.
        /// </summary>
        /// <param name="streamWriter">The stream writer.</param>
        public static void WriteByteOrderMark(StreamWriter streamWriter)
        {
            byte[] BOM = streamWriter.Encoding.GetPreamble();
            streamWriter.BaseStream.Write(BOM, 0, BOM.Length);
        }

        /// <summary>
        /// Writes the bytes.
        /// </summary>
        /// <param name="stream">The stream.</param>
        /// <param name="bytes">The bytes.</param>
        public static void WriteBytes(Stream stream, byte[] bytes)
        {
            stream.Write(bytes, 0, bytes.Length);
        }

        /// <summary>
        /// Reads the bytes.
        /// </summary>
        /// <param name="stream">The stream.</param>
        /// <param name="count">The count.</param>
        /// <returns></returns>
        public static byte[] ReadBytes(Stream stream, int count)
        {
            int length = Math.Min((int)stream.Length, count);
            byte[] bytes = new byte[length];
            stream.Read(bytes, 0, bytes.Length);
            return bytes;
        }

        /// <summary>
        /// Reads the bytes.
        /// </summary>
        /// <param name="stream">The stream.</param>
        /// <param name="buffer">The buffer.</param>
        public static void ReadBytes(Stream stream, byte[] buffer)
        {
            stream.Read(buffer, 0, buffer.Length);
        }

        /// <summary>
        /// Reads to end.
        /// </summary>