using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml.Serialization;
using System.Data;
using System.Runtime.Serialization.Formatters.Soap;
using System.Runtime.Serialization.Formatters.Binary;

namespace Mesnac.Basic
{
    /// <summary>
    /// 序列化和反序列化处理类
    /// </summary>
    public class SerializeHandler
    {
        #region 序列化和反序列化

        /// <summary>
        /// 序列化指定类型的对象到指定的文件
        /// </summary>
        /// <typeparam name="T">要序列化的对象类型</typeparam>
        /// <param name="obj">要序列化的对象</param>
        /// <param name="fileName">保存对象数据的完整文件名</param>
        public static void Serialize<T>(T obj, string fileName)
        {
            lock (fileName)
            {
                try
                {
                    string dir = Path.GetDirectoryName(fileName);       //获取文件路径
                    if (!Directory.Exists(dir))
                    {
                        Directory.CreateDirectory(dir);
                    }
                    BinaryFormatter formatter = new BinaryFormatter();
                    FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write);
                    formatter.Serialize(fs, obj);
                    fs.Close();
                }
                catch (Exception ex)
                {
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.Message);
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.StackTrace);
                }
            }
        }
        /// <summary>
        /// 从指定的文件中反序列化指定类型的对象
        /// </summary>
        /// <typeparam name="T">反序列化的对象类型</typeparam>
        /// <param name="fileName">保存对象数据的文件名</param>
        /// <returns>返回反序列化出的对象实例</returns>
        public static T Deserialize<T>(string fileName)
        {
            lock (fileName)
            {
                try
                {
                    if (!File.Exists(fileName))
                    {
                        ICSharpCode.Core.LoggingService<SerializeHandler>.Debug(String.Format("序列化文件{0}不存在!", fileName));
                        return default(T);
                    }
                    else
                    {
                        BinaryFormatter formatter = new BinaryFormatter();
                        FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
                        T obj = (T)formatter.Deserialize(fs);
                        fs.Close();
                        return obj;
                    }
                }
                catch (Exception ex)
                {
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.Message);
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.StackTrace);
                    return default(T);
                }
            }
        }
        /// <summary>
        /// 序列化指定类型的对象到指定的Xml文件
        /// </summary>
        /// <typeparam name="T">要序列化的对象类型</typeparam>
        /// <param name="obj">要序列化的对象</param>
        /// <param name="fileName">保存对象数据的完整文件名</param>
        public static void SerializeXml<T>(T obj, string fileName)
        {
            lock (fileName)
            {
                try
                {
                    string dir = Path.GetDirectoryName(fileName);       //获取文件路径
                    if (!Directory.Exists(dir))
                    {
                        Directory.CreateDirectory(dir);
                    }
                    SoapFormatter formatter = new SoapFormatter();
                    FileStream fs = new FileStream(fileName, FileMode.Create, FileAccess.Write);
                    formatter.Serialize(fs, obj);
                    fs.Close();
                }
                catch (Exception ex)
                {
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.Message);
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.StackTrace);
                }
            }
        }
        /// <summary>
        /// 从指定的Xml文件中反序列化指定类型的对象
        /// </summary>
        /// <typeparam name="T">反序列化的对象类型</typeparam>
        /// <param name="fileName">保存对象数据的文件名</param>
        /// <returns>返回反序列化出的对象实例</returns>
        public static T DeserializeXml<T>(string fileName)
        {
            lock (fileName)
            {
                try
                {
                    if (!File.Exists(fileName))
                    {
                        ICSharpCode.Core.LoggingService<SerializeHandler>.Debug(String.Format("序列化文件{0}不存在!", fileName));
                        return default(T);
                    }
                    else
                    {
                        SoapFormatter formatter = new SoapFormatter();
                        FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
                        T obj = (T)formatter.Deserialize(fs);
                        fs.Close();
                        return obj;
                    }
                }
                catch (Exception ex)
                {
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.Message);
                    ICSharpCode.Core.LoggingService<SerializeHandler>.Error(ex.StackTrace);
                    return default(T);
                }
            }
        }
        /// <summary>
        /// 把DataTable对象序列化为XML文本字符串
        /// </summary>
        /// <param name="dt">要序列化的DataTable对象</param>
        /// <returns>返回序列化后的XML文本字符串</returns>
        public static string SerializeDataTable(DataTable dt)
        {
            StringWriter strWriter = new StringWriter();
            XmlSerializer serializer = new XmlSerializer(typeof(DataTable));
            serializer.Serialize(strWriter, dt);
            return strWriter.ToString();
        }


        /// <summary>
        /// 把对象序列化为xml字符串
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string SerializeObject<T>(T obj)
        {
            if (obj != null)
            {
                StringWriter strWriter = new StringWriter();
                XmlSerializer serializer = new XmlSerializer(typeof(T));
                serializer.Serialize(strWriter, obj);
                return strWriter.ToString();
            }
            else
            {
                return String.Empty;
            }
        }

        /// <summary>
        /// 把xml字符串反序列化为对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="xmlString"></param>
        /// <returns></returns>
        public static T DeserializeObject<T>(string xmlString)
        {
            if (!String.IsNullOrEmpty(xmlString))
            {
                StringReader strReader = new StringReader(xmlString);
                XmlSerializer serializer = new XmlSerializer(typeof(T));
                T obj = (T)serializer.Deserialize(strReader);
                return obj;
            }
            else
            {
                return default(T);
            }
        }

        #endregion
    }
}