using System;

using System.Text;

using System.Web;

using System.IO;

namespace DotNet.Utilities

{

    public class FileOperate

    {

        #region 写文件

        protected void Write_Txt(string FileName, string Content)

        {

            Encoding code = Encoding.GetEncoding("gb2312");

            string htmlfilename = HttpContext.Current.Server.MapPath("Precious\\" + FileName + ".txt"); //保存文件的路径

            string str = Content;

            StreamWriter sw = null;

            {

                try

                {

                    sw = new StreamWriter(htmlfilename, false, code);

                    sw.Write(str);

                    sw.Flush();

                }

                catch { }

            }

            sw.Close();

            sw.Dispose();

        }

        #endregion

        #region 读文件

        protected string Read_Txt(string filename)

        {

            Encoding code = Encoding.GetEncoding("gb2312");

            string temp = HttpContext.Current.Server.MapPath("Precious\\" + filename + ".txt");

            string str = "";

            if (File.Exists(temp))

            {

                StreamReader sr = null;

                try

                {

                    sr = new StreamReader(temp, code);

                    str = sr.ReadToEnd(); // 读取文件

                }

                catch { }

                sr.Close();

                sr.Dispose();

            }

            else

            {

                str = "";

            }

            return str;

        }

        #endregion

        #region 取得文件后缀名

        /****************************************

         * 函数名称:GetPostfixStr

         * 功能说明:取得文件后缀名

         * 参    数:filename:文件名称

         * 调用示列:

         *           string filename = "aaa.aspx";       

         *           string s = DotNet.Utilities.FileOperate.GetPostfixStr(filename);        

        *****************************************/

        /// <summary>

        /// 取后缀名

        /// </summary>

        /// <param name="filename">文件名</param>

        /// <returns>.gif|.html格式</returns>

        public static string GetPostfixStr(string filename)

        {

            int start = filename.LastIndexOf(".");

            int length = filename.Length;

            string postfix = filename.Substring(start, length - start);

            return postfix;

        }

        #endregion

        #region 写文件

        /****************************************

         * 函数名称:WriteFile

         * 功能说明:当文件不存时,则创建文件,并追加文件

         * 参    数:Path:文件路径,Strings:文本内容

         * 调用示列:

         *           string Path = Server.MapPath("Default2.aspx");      

         *           string Strings = "这是我写的内容啊";

         *           DotNet.Utilities.FileOperate.WriteFile(Path,Strings);

        *****************************************/

        /// <summary>

        /// 写文件

        /// </summary>

        /// <param name="Path">文件路径</param>

        /// <param name="Strings">文件内容</param>

        public static void WriteFile(string Path, string Strings)

        {

            if (!System.IO.File.Exists(Path))

            {

                System.IO.FileStream f = System.IO.File.Create(Path);

                f.Close();

                f.Dispose();

            }

            System.IO.StreamWriter f2 = new System.IO.StreamWriter(Path, true, System.Text.Encoding.UTF8);

            f2.WriteLine(Strings);

            f2.Close();

            f2.Dispose();

        }

        #endregion

        #region 读文件

        /****************************************

         * 函数名称:ReadFile

         * 功能说明:读取文本内容

         * 参    数:Path:文件路径

         * 调用示列:

         *           string Path = Server.MapPath("Default2.aspx");      

         *           string s = DotNet.Utilities.FileOperate.ReadFile(Path);

        *****************************************/

        /// <summary>

        /// 读文件

        /// </summary>

        /// <param name="Path">文件路径</param>

        /// <returns></returns>

        public static string ReadFile(string Path)

        {

            string s = "";

            if (!System.IO.File.Exists(Path))

                s = "不存在相应的目录";

            else

            {

                StreamReader f2 = new StreamReader(Path, System.Text.Encoding.GetEncoding("gb2312"));

                s = f2.ReadToEnd();

                f2.Close();

                f2.Dispose();

            }

            return s;

        }

        #endregion

        #region 追加文件

        /****************************************

         * 函数名称:FileAdd

         * 功能说明:追加文件内容

         * 参    数:Path:文件路径,strings:内容

         * 调用示列:

         *           string Path = Server.MapPath("Default2.aspx");    

         *           string Strings = "新追加内容";

         *           DotNet.Utilities.FileOperate.FileAdd(Path, Strings);

        *****************************************/

        /// <summary>

        /// 追加文件

        /// </summary>

        /// <param name="Path">文件路径</param>

        /// <param name="strings">内容</param>

        public static void FileAdd(string Path, string strings)

        {

            StreamWriter sw = File.AppendText(Path);

            sw.Write(strings);

            sw.Flush();

            sw.Close();

            sw.Dispose();

        }

        #endregion

        #region 拷贝文件

        /****************************************

         * 函数名称:FileCoppy

         * 功能说明:拷贝文件

         * 参    数:OrignFile:原始文件,NewFile:新文件路径

         * 调用示列:

         *           string OrignFile = Server.MapPath("Default2.aspx");    

         *           string NewFile = Server.MapPath("Default3.aspx");

         *           DotNet.Utilities.FileOperate.FileCoppy(OrignFile, NewFile);

        *****************************************/

        /// <summary>

        /// 拷贝文件

        /// </summary>

        /// <param name="OrignFile">原始文件</param>

        /// <param name="NewFile">新文件路径</param>

        public static void FileCoppy(string OrignFile, string NewFile)

        {

            File.Copy(OrignFile, NewFile, true);

        }

        #endregion

        #region 删除文件

        /****************************************

         * 函数名称:FileDel

         * 功能说明:删除文件

         * 参    数:Path:文件路径

         * 调用示列:

         *           string Path = Server.MapPath("Default3.aspx");   

         *           DotNet.Utilities.FileOperate.FileDel(Path);

        *****************************************/

        /// <summary>

        /// 删除文件

        /// </summary>

        /// <param name="Path">路径</param>

        public static void FileDel(string Path)

        {

            File.Delete(Path);

        }

        #endregion

        #region 移动文件

        /****************************************

         * 函数名称:FileMove

         * 功能说明:移动文件

         * 参    数:OrignFile:原始路径,NewFile:新文件路径

         * 调用示列:

         *            string OrignFile = Server.MapPath("../说明.txt");   

         *            string NewFile = Server.MapPath("../../说明.txt");

         *            DotNet.Utilities.FileOperate.FileMove(OrignFile, NewFile);

        *****************************************/

        /// <summary>

        /// 移动文件

        /// </summary>

        /// <param name="OrignFile">原始路径</param>

        /// <param name="NewFile">新路径</param>

        public static void FileMove(string OrignFile, string NewFile)

        {

            File.Move(OrignFile, NewFile);

        }

        #endregion

        #region 在当前目录下创建目录

        /****************************************

         * 函数名称:FolderCreate

         * 功能说明:在当前目录下创建目录

         * 参    数:OrignFolder:当前目录,NewFloder:新目录

         * 调用示列:

         *           string OrignFolder = Server.MapPath("test/");   

         *           string NewFloder = "new";

         *           DotNet.Utilities.FileOperate.FolderCreate(OrignFolder, NewFloder);

        *****************************************/

        /// <summary>

        /// 在当前目录下创建目录

        /// </summary>

        /// <param name="OrignFolder">当前目录</param>

        /// <param name="NewFloder">新目录</param>

        public static void FolderCreate(string OrignFolder, string NewFloder)

        {

            Directory.SetCurrentDirectory(OrignFolder);

            Directory.CreateDirectory(NewFloder);

        }

        /// <summary>

        /// 创建文件夹

        /// </summary>

        /// <param name="Path"></param>

        public static void FolderCreate(string Path)

        {

            // 判断目标目录是否存在如果不存在则新建之

            if (!Directory.Exists(Path))

                Directory.CreateDirectory(Path);

        }

        #endregion

        #region 创建目录

        public static void FileCreate(string Path)

        {

            FileInfo CreateFile = new FileInfo(Path); //创建文件

            if (!CreateFile.Exists)

            {

                FileStream FS = CreateFile.Create();

                FS.Close();

            }

        }

        #endregion

        #region 递归删除文件夹目录及文件

        /****************************************

         * 函数名称:DeleteFolder

         * 功能说明:递归删除文件夹目录及文件

         * 参    数:dir:文件夹路径

         * 调用示列:

         *           string dir = Server.MapPath("test/"); 

         *           DotNet.Utilities.FileOperate.DeleteFolder(dir);      

        *****************************************/

        /// <summary>

        /// 递归删除文件夹目录及文件

        /// </summary>

        /// <param name="dir"></param> 

        /// <returns></returns>

        public static void DeleteFolder(string dir)

        {

            if (Directory.Exists(dir)) //如果存在这个文件夹删除之

            {

                foreach (string d in Directory.GetFileSystemEntries(dir))

                {

                    if (File.Exists(d))

                        File.Delete(d); //直接删除其中的文件                       

                    else

                        DeleteFolder(d); //递归删除子文件夹

                }

                Directory.Delete(dir, true); //删除已空文件夹                

            }

        }

        #endregion

        #region 将指定文件夹下面的所有内容copy到目标文件夹下面 果目标文件夹为只读属性就会报错。

        /****************************************

         * 函数名称:CopyDir

         * 功能说明:将指定文件夹下面的所有内容copy到目标文件夹下面 果目标文件夹为只读属性就会报错。

         * 参    数:srcPath:原始路径,aimPath:目标文件夹

         * 调用示列:

         *           string srcPath = Server.MapPath("test/"); 

         *           string aimPath = Server.MapPath("test1/");

         *           DotNet.Utilities.FileOperate.CopyDir(srcPath,aimPath);  

        *****************************************/

        /// <summary>

        /// 指定文件夹下面的所有内容copy到目标文件夹下面

        /// </summary>

        /// <param name="srcPath">原始路径</param>

        /// <param name="aimPath">目标文件夹</param>

        public static void CopyDir(string srcPath, string aimPath)

        {

            try

            {

                // 检查目标目录是否以目录分割字符结束如果不是则添加之

                if (aimPath[aimPath.Length - 1] != Path.DirectorySeparatorChar)

                    aimPath += Path.DirectorySeparatorChar;

                // 判断目标目录是否存在如果不存在则新建之

                if (!Directory.Exists(aimPath))

                    Directory.CreateDirectory(aimPath);

                // 得到源目录的文件列表,该里面是包含文件以及目录路径的一个数组

                //如果你指向copy目标文件下面的文件而不包含目录请使用下面的方法

                //string[] fileList = Directory.GetFiles(srcPath);

                string[] fileList = Directory.GetFileSystemEntries(srcPath);

                //遍历所有的文件和目录

                foreach (string file in fileList)

                {

                    //先当作目录处理如果存在这个目录就递归Copy该目录下面的文件

                    if (Directory.Exists(file))

                        CopyDir(file, aimPath + Path.GetFileName(file));

                    //否则直接Copy文件

                    else

                        File.Copy(file, aimPath + Path.GetFileName(file), true);

                }

            }

            catch (Exception ee)

            {

                throw new Exception(ee.ToString());

            }

        }

        #endregion

        #region 获取指定文件夹下所有子目录及文件(树形)

        /****************************************

         * 函数名称:GetFoldAll(string Path)

         * 功能说明:获取指定文件夹下所有子目录及文件(树形)

         * 参    数:Path:详细路径

         * 调用示列:

         *           string strDirlist = Server.MapPath("templates");      

         *           this.Literal1.Text = DotNet.Utilities.FileOperate.GetFoldAll(strDirlist); 

        *****************************************/

        /// <summary>

        /// 获取指定文件夹下所有子目录及文件

        /// </summary>

        /// <param name="Path">详细路径</param>

        public static string GetFoldAll(string Path)

        {

            string str = "";

            DirectoryInfo thisOne = new DirectoryInfo(Path);

            str = ListTreeShow(thisOne, 0, str);

            return str;

        }

        /// <summary>

        /// 获取指定文件夹下所有子目录及文件函数

        /// </summary>

        /// <param name="theDir">指定目录</param>

        /// <param name="nLevel">默认起始值,调用时,一般为0</param>

        /// <param name="Rn">用于迭加的传入值,一般为空</param>

        /// <returns></returns>

        public static string ListTreeShow(DirectoryInfo theDir, int nLevel, string Rn)//递归目录 文件

        {

            DirectoryInfo[] subDirectories = theDir.GetDirectories();//获得目录

            foreach (DirectoryInfo dirinfo in subDirectories)

            {

                if (nLevel == 0)

                {

                    Rn += "├";

                }

                else

                {

                    string _s = "";

                    for (int i = 1; i <= nLevel; i++)

                    {

                        _s += "│&nbsp;";

                    }

                    Rn += _s + "├";

                }

                Rn += "<b>" + dirinfo.Name.ToString() + "</b><br />";

                FileInfo[] fileInfo = dirinfo.GetFiles();   //目录下的文件

                foreach (FileInfo fInfo in fileInfo)

                {

                    if (nLevel == 0)

                    {

                        Rn += "│&nbsp;├";

                    }

                    else

                    {

                        string _f = "";

                        for (int i = 1; i <= nLevel; i++)

                        {

                            _f += "│&nbsp;";

                        }

                        Rn += _f + "│&nbsp;├";

                    }

                    Rn += fInfo.Name.ToString() + " <br />";

                }

                Rn = ListTreeShow(dirinfo, nLevel + 1, Rn);

            }

            return Rn;

        }


        /****************************************

         * 函数名称:GetFoldAll(string Path)

         * 功能说明:获取指定文件夹下所有子目录及文件(下拉框形)

         * 参    数:Path:详细路径

         * 调用示列:

         *            string strDirlist = Server.MapPath("templates");     

         *            this.Literal2.Text = DotNet.Utilities.FileOperate.GetFoldAll(strDirlist,"tpl","");

        *****************************************/

        /// <summary>

        /// 获取指定文件夹下所有子目录及文件(下拉框形)

        /// </summary>

        /// <param name="Path">详细路径</param>

        ///<param name="DropName">下拉列表名称</param>

        ///<param name="tplPath">默认选择模板名称</param>

        public static string GetFoldAll(string Path, string DropName, string tplPath)

        {

            string strDrop = "<select name=\"" + DropName + "\" id=\"" + DropName + "\"><option value=\"\">--请选择详细模板--</option>";

            string str = "";

            DirectoryInfo thisOne = new DirectoryInfo(Path);

            str = ListTreeShow(thisOne, 0, str, tplPath);

            return strDrop + str + "</select>";

        }

        /// <summary>

        /// 获取指定文件夹下所有子目录及文件函数

        /// </summary>

        /// <param name="theDir">指定目录</param>

        /// <param name="nLevel">默认起始值,调用时,一般为0</param>

        /// <param name="Rn">用于迭加的传入值,一般为空</param>

        /// <param name="tplPath">默认选择模板名称</param>

        /// <returns></returns>

        public static string ListTreeShow(DirectoryInfo theDir, int nLevel, string Rn, string tplPath)//递归目录 文件

        {

            DirectoryInfo[] subDirectories = theDir.GetDirectories();//获得目录

            foreach (DirectoryInfo dirinfo in subDirectories)

            {

                Rn += "<option value=\"" + dirinfo.Name.ToString() + "\"";

                if (tplPath.ToLower() == dirinfo.Name.ToString().ToLower())

                {

                    Rn += " selected ";

                }

                Rn += ">";

                if (nLevel == 0)

                {

                    Rn += "┣";

                }

                else

                {

                    string _s = "";

                    for (int i = 1; i <= nLevel; i++)

                    {

                        _s += "│&nbsp;";

                    }

                    Rn += _s + "┣";

                }

                Rn += "" + dirinfo.Name.ToString() + "</option>";

                FileInfo[] fileInfo = dirinfo.GetFiles();   //目录下的文件

                foreach (FileInfo fInfo in fileInfo)

                {

                    Rn += "<option value=\"" + dirinfo.Name.ToString() + "/" + fInfo.Name.ToString() + "\"";

                    if (tplPath.ToLower() == fInfo.Name.ToString().ToLower())

                    {

                        Rn += " selected ";

                    }

                    Rn += ">";

                    if (nLevel == 0)

                    {

                        Rn += "│&nbsp;├";

                    }

                    else

                    {

                        string _f = "";

                        for (int i = 1; i <= nLevel; i++)

                        {

                            _f += "│&nbsp;";

                        }

                        Rn += _f + "│&nbsp;├";

                    }

                    Rn += fInfo.Name.ToString() + "</option>";

                }

                Rn = ListTreeShow(dirinfo, nLevel + 1, Rn, tplPath);

            }

            return Rn;

        }

        #endregion

        #region 获取文件夹大小

        /****************************************

         * 函数名称:GetDirectoryLength(string dirPath)

         * 功能说明:获取文件夹大小

         * 参    数:dirPath:文件夹详细路径

         * 调用示列:

         *           string Path = Server.MapPath("templates");

         *           Response.Write(DotNet.Utilities.FileOperate.GetDirectoryLength(Path));      

        *****************************************/

        /// <summary>

        /// 获取文件夹大小

        /// </summary>

        /// <param name="dirPath">文件夹路径</param>

        /// <returns></returns>

        public static long GetDirectoryLength(string dirPath)

        {

            if (!Directory.Exists(dirPath))

                return 0;

            long len = 0;

            DirectoryInfo di = new DirectoryInfo(dirPath);

            foreach (FileInfo fi in di.GetFiles())

            {

                len += fi.Length;

            }

            DirectoryInfo[] dis = di.GetDirectories();

            if (dis.Length > 0)

            {

                for (int i = 0; i < dis.Length; i++)

                {

                    len += GetDirectoryLength(dis[i].FullName);

                }

            }

            return len;

        }

        #endregion

        #region 获取指定文件详细属性

        /****************************************

         * 函数名称:GetFileAttibe(string filePath)

         * 功能说明:获取指定文件详细属性

         * 参    数:filePath:文件详细路径

         * 调用示列:

         *           string file = Server.MapPath("robots.txt"); 

         *            Response.Write(DotNet.Utilities.FileOperate.GetFileAttibe(file));        

        *****************************************/

        /// <summary>

        /// 获取指定文件详细属性

        /// </summary>

        /// <param name="filePath">文件详细路径</param>

        /// <returns></returns>

        public static string GetFileAttibe(string filePath)

        {

            string str = "";

            System.IO.FileInfo objFI = new System.IO.FileInfo(filePath);

            str += "详细路径:" + objFI.FullName + "<br>文件名称:" + objFI.Name + "<br>文件长度:" + objFI.Length.ToString() + "字节<br>创建时间" + objFI.CreationTime.ToString() + "<br>最后访问时间:" + objFI.LastAccessTime.ToString() + "<br>修改时间:" + objFI.LastWriteTime.ToString() + "<br>所在目录:" + objFI.DirectoryName + "<br>扩展名:" + objFI.Extension;

            return str;

        }

        #endregion

    }

}