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

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

namespace QiHe.CodeLib
{
    /// <summary>
    /// TextEncoding
    /// </summary>
    public class TextEncoding
    {
        /// <summary>
        /// check if all charaters in text are ASCII charater
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        public static bool FitsInASCIIEncoding(string text)
        {
            if(string.IsNullOrEmpty(text))return true;
            byte[] bytes = Encoding.UTF8.GetBytes(text);
            for (int i = 0; i < bytes.Length; i++)
            {
                if (bytes[i] > 127)
                {
                    return false;
                }
            }
            return true;
        }

        /// <summary>
        /// Encodings the is right.
        /// </summary>
        /// <param name="encoding">The encoding.</param>
        /// <param name="data">The data.</param>
        /// <returns></returns>
        public static bool EncodingIsRight(Encoding encoding, byte[] data)
        {
            string text = encoding.GetString(data);
            byte[] bytes = encoding.GetBytes(text);
            if (Algorithm.ArrayEqual(bytes, data))
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// Safes the decode string.
        /// </summary>
        /// <param name="encoding">The encoding.</param>
        /// <param name="data">The data.</param>
        /// <returns></returns>
        public static object SafeDecodeString(Encoding encoding, byte[] data)
        {
            string text = encoding.GetString(data);
            byte[] bytes = encoding.GetBytes(text);