using System;
using Microsoft.Win32;
using System.Diagnostics;
using System.IO;

namespace MSCL
{
    /// <summary>
    /// 壓縮解壓類
    /// </summary>
    public class ZipHelper
    {
        /// <summary>
        /// 利用 WinRAR 進(jìn)行壓縮
        /// </summary>
        /// <param name="path">將要被壓縮的文件夾（絕對(duì)路徑）</param>
        /// <param name="rarPath">壓縮后的 .rar 的存放目錄（絕對(duì)路徑）</param>
        /// <param name="rarName">壓縮文件的名稱（包括后綴）</param>
        /// <returns>true 或 false。壓縮成功返回 true，反之，false。</returns>
        public bool RAR(string path, string rarPath, string rarName)
        {
            bool flag = false;
            string rarexe;       //WinRAR.exe 的完整路徑
            RegistryKey regkey;  //注冊(cè)表鍵
            Object regvalue;     //鍵值
            string cmd;          //WinRAR 命令參數(shù)
            ProcessStartInfo startinfo;
            Process process;
            try
            {
                regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command");
                regvalue = regkey.GetValue("WinRAR");  // 鍵值為 "d:\Program Files\WinRAR\WinRAR.exe" "%1"
                rarexe = regvalue.ToString();
                regkey.Close();
                rarexe = rarexe.Substring(1, rarexe.Length - 7);  // d:\Program Files\WinRAR\WinRAR.exe

                Directory.CreateDirectory(path);
                //壓縮命令，相當(dāng)于在要壓縮的文件夾(path)上點(diǎn)右鍵->WinRAR->添加到壓縮文件->輸入壓縮文件名(rarName)
                cmd = string.Format("a {0} {1} -r",
                                    rarName,
                                    path);
                startinfo = new ProcessStartInfo();
                startinfo.FileName = rarexe;
                startinfo.Arguments = cmd;                          //設(shè)置命令參數(shù)
                startinfo.WindowStyle = ProcessWindowStyle.Hidden;  //隱藏 WinRAR 窗口

                startinfo.WorkingDirectory = rarPath;
                process = new Process();
                process.StartInfo = startinfo;
                process.Start();
                process.WaitForExit(); //無(wú)限期等待進(jìn)程 winrar.exe 退出
                if (process.HasExited)
                {
                    flag = true;
                }
                process.Close();
            }
            catch (Exception e)
            {
                throw e;
            }
            return flag;
        }

        /// <summary>
        /// 利用 WinRAR 進(jìn)行解壓縮
        /// </summary>
        /// <param name="path">文件解壓路徑（絕對(duì)）</param>
        /// <param name="rarPath">將要解壓縮的 .rar 文件的存放目錄（絕對(duì)路徑）</param>
        /// <param name="rarName">將要解壓縮的 .rar 文件名（包括后綴）</param>
        /// <returns>true 或 false。解壓縮成功返回 true，反之，false。</returns>
        public bool UnRAR(string path, string rarPath, string rarName)
        {
            bool flag = false;
            string rarexe;
            RegistryKey regkey;
            Object regvalue;
            string cmd;
            ProcessStartInfo startinfo;
            Process process;
            try
            {
                regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command");
                regvalue = regkey.GetValue("");
                rarexe = regvalue.ToString();
                regkey.Close();
                rarexe = rarexe.Substring(1, rarexe.Length - 7);

                Directory.CreateDirectory(path);
                //解壓縮命令，相當(dāng)于在要壓縮文件(rarName)上點(diǎn)右鍵->WinRAR->解壓到當(dāng)前文件夾
                cmd = string.Format("x {0} {1} -y",
                                    rarName,
                                    path);
                startinfo = new ProcessStartInfo();
                startinfo.FileName = rarexe;
                startinfo.Arguments = cmd;
                startinfo.WindowStyle = ProcessWindowStyle.Hidden;

                startinfo.WorkingDirectory = rarPath;
                process = new Process();
                process.StartInfo = startinfo;
                process.Start();
                process.WaitForExit();
                if (process.HasExited)
                {
                    flag = true;
                }
                process.Close();
            }
            catch (Exception e)
            {
                throw e;
            }
            return flag;
        }
    }
}