plugin_decompress.cs

自己写的可扩展插件文件管理器

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using Core.Services.Sdk;
using System.IO;

namespace lz77lib
{
    [Plugin(true)]
    class plugin_decompress:IPlugin
    {

        private PluginInfo p;
        byte[] header = { 0x04, 0x03, 0x4b, 0x50 };//文件头
        int lblock = 0x0;                              //表示ext块的长度
        byte[]  rheader={0x0,0x0,0x0,0x0},                                 //用于确保是否是正确的文件头
                 ext;                                   //表示原来的文件名

        public plugin_decompress()
        {
            p = new PluginInfo("lz77 decompress", "Signercompress", "使用lz77解压缩文件", new Version(1, 0, 3204, 24355), new ToolStripMenuItem("lz77解压"));
        }


        #region IPlugin 成员

        public void AssignTask(System.Collections.ArrayList Targets)
        {
            int curr = 0, max = 0;
            foreach (string s in Targets)
                max += (int)(new FileInfo(s).Length);
            foreach (string s in Targets)
            {
                FileStream fs = new FileStream(s, FileMode.Open);
                curr += (int)fs.Length;
                fs.Read(rheader, 0, 4);
                if ((rheader[0] != header[0])&&(rheader[1] != header[1])&&(rheader[2] != header[2])&&(rheader[3] != header[3]))
                {
                    MessageBox.Show("不是正确的lz7文件！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    fs.Close();
                    OnProgressChanged(new ProgressChangedEventArgs(max, max));
                }
               // try
              //  {
                    BinaryReader br = new BinaryReader(fs);
                    lblock=br.ReadInt32();
                    string name=new FileInfo(s).DirectoryName+"\\"+Encoding.Unicode.GetString(br.ReadBytes(lblock));
                    long pos=br.BaseStream.Position;
                    br.Close();
                    lz77.unzipData(s, pos, name);
               // }
              //  catch
               // {
                   // MessageBox.Show("不是正确的lz7文件！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                  //  OnProgressChanged(new ProgressChangedEventArgs(max, max));
               // }
                OnProgressChanged(new ProgressChangedEventArgs(curr, max));
            }
        }

        public PluginInfo PluginInfo
        {
            get { return p; }
        }

        public event ProgressChangedEventHandler ProgressChanged;

        protected virtual void OnProgressChanged(ProgressChangedEventArgs e)
        {
            if (ProgressChanged != null)
            {
                ProgressChanged(this, e);
            }
        }

        #endregion

        #region IDisposable 成员

        public void Dispose()
        {
           
        }

        #endregion
    }
}