c++builder ZIP文件解压与压缩（ZLIB DLL调用）(转载 )

转载：http://blog.csdn.net/goodai007/article/details/7414512

头文件：ZipAndFile.h

 //---------------------------------------------------------------------------

 #ifndef ZipAndFileH
 #define ZipAndFileH
 #include <Classes.hpp>
 //---------------------------------------------------------------------------
 class ZipAndFile{
     private:

     public:
     ZipAndFile();
     ~ZipAndFile();
     //ZIP操作
     bool DoZipfile(String DoZip,String ZipFilename,String SourceFile,bool Check);
     //复制目录
     bool MyCopyFiles(AnsiString FromFile,AnsiString ToFile);
     //删除目录
     bool deldir(char* dir_fullpath);
     };
 #endif

源文件：ZipAndFile.cpp

 //---------------------------------------------------------------------------
 #pragma hdrstop
 #include "ZipAndFile.h"
 #include "Tlhelp32.h"
 #include <vcl.h>

 //---------------------------------------------------------------------------
 ZipAndFile::ZipAndFile()
 {
 }
 ZipAndFile::~ZipAndFile()
 {
 }
 //ZIP压缩与解压
 //---------------------------------------------------------------------------
 bool ZipAndFile::DoZipfile(String DoZip,String ZipFilename,String SourceFile,bool Check)
 {
     bool ZipReturn=false;
     WideString w1;//必需要这样申请WideString变量，不然传值时会让两个变量使用同一样内存地址，搞了3个小时才发现这是BCB2006的BUG.
     WideString w2;
     LPCTSTR L1;//必需使用这个格式的变量，不然传过去到DLL时乱码。
     LPCTSTR L2;
     if(DoZip=="ZWZipCompress")//压缩
     {
         w1=SourceFile;
         w2=ZipFilename;
         L1=(const char*)w1.c_bstr();
         L2=(const char*)w2.c_bstr();
         bool __stdcall (*DllMethods)(LPCTSTR,LPCTSTR,bool);
         HINSTANCE hInst=NULL;
         hInst=LoadLibrary((ExtractFilePath(Application->ExeName)+"ZLibWrap.dll").c_str());//动态加载DLL  //当前目录下的DLL文件
         FARPROC P;
         P = GetProcAddress(hInst,DoZip.c_str());
         DllMethods=(bool __stdcall (__cdecl *)(LPCTSTR,LPCTSTR,bool))P;
         if(DllMethods){
             ZipReturn=DllMethods(L1,L2,Check);
         }
         FreeLibrary(hInst);
         return ZipReturn;
     }else if(DoZip=="ZWZipExtract")//解压
     {
         w1=ZipFilename;
         w2=SourceFile;
         L1=(const char*)w1.c_bstr();
         L2=(const char*)w2.c_bstr();
         bool __stdcall (*DllMethods)(LPCTSTR,LPCTSTR);
         HINSTANCE hInst=NULL;
         hInst=LoadLibrary((ExtractFilePath(Application->ExeName)+"ZLibWrap.dll").c_str());//动态加载DLL  //当前目录下的DLL文件
         FARPROC P;
         P = GetProcAddress(hInst,DoZip.c_str());
         DllMethods=(bool __stdcall (__cdecl *)(LPCTSTR,LPCTSTR))P;
         if(DllMethods){
             ZipReturn=DllMethods(L1,L2);
         }
         FreeLibrary(hInst);
         return ZipReturn;
     }
 }
 //复制目录文件
 //---------------------------------------------------------------------------
 bool ZipAndFile::MyCopyFiles(AnsiString FromFile,AnsiString ToFile)
 {
     while(true){
         if (!DirectoryExists(ToFile)){
             CreateDir(ToFile);//文件夹不存在则创建
             break;
         }else{
             deldir(ToFile.c_str());//在就删除
         }
     }
     SHFILEOPSTRUCT op;
     String strFrom = FromFile+"\\*.*";
     String strTo = ToFile;
     op.fAnyOperationsAborted = true;
     op.hwnd = NULL;
     op.wFunc = FO_COPY;
     op.pFrom = strFrom.c_str();
     op.pTo = strTo.c_str();
     op.fFlags = FOF_NOCONFIRMATION |FOF_NOCONFIRMMKDIR; //FOF_NOCONFIRMATION 不出现确认对话框(当需要覆盖时)
     bool b=false;
     b=SHFileOperation(&op);
     //int kkk= SHFileOperation(&op);
     switch(GetLastError())
     {
         //只要出错就弹出
         return false;
     }

     return(b);
 }
 //删除目录文件
 //---------------------------------------------------------------------------
 bool ZipAndFile::deldir(char* dir_fullpath)     //删除指定的目录
 {
     char dir[]={};
     char filename[]={};
     int len = ;
     int    ch = '\\';
     strcpy(dir, dir_fullpath);
     len = strlen(dir);
     char *temp = strrchr(dir,ch);//查找\\
     if(len <  || temp == NULL)     //根据后面的\\来判断，可能为磁盘根目录或者不是有效的目录路径
     return false;

     if(temp != NULL)
     {
         if((temp - dir + ) != len)     //在目录后添加 '\\'
         strcat(dir,"\\");
     }
     GetCurrentDirectory(,filename);//得到当前目录
     strcat(filename,"\\");
     if(strcmp(dir,filename)==)    //如果要删除的目录是当前目录
     {
         strcat(filename,"..");
         SetCurrentDirectory(filename);    //改变当前目录
     }

     WIN32_FIND_DATA finddata;
     HANDLE fFile;
     bool flag;
     strcpy(filename,dir);
     strcat(filename,"*.*");
     fFile=FindFirstFile(filename,&finddata);
     flag=true;
     if(fFile!=INVALID_HANDLE_VALUE)     //此目录有没有效
     {
         BOOL bfind=true;
         while(bfind)
         {
             if(finddata.cFileName[] != '.')
             {
                 strcpy(filename,dir);
                 strcat(filename,finddata.cFileName);
                 if(finddata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)//判断是不是文件夹
                 {    //删除找到的子目录
                     strcat(filename,"\\");//如果文件夹就再加上\\后进行递归
                     flag = flag && deldir(filename); //递归
                 }
                 else
                 {    //删除找到的文件
                     SetFileAttributes(filename,FILE_ATTRIBUTE_NORMAL);//文件属性设为普通
                     flag = flag && DeleteFile(filename); //删除
                 }
             }
         bfind = FindNextFile(fFile,&finddata);
         }
         FindClose(fFile);
     }
     if(flag)
     {
         SetFileAttributes(dir_fullpath,FILE_ATTRIBUTE_NORMAL);//去掉只读
         if(RemoveDirectory(dir_fullpath))//删除空目录
         return   true;
     }
     return   false;
 }

使用方法：包了头文件后：

 ZipAndFile *TZipAndFile=new ZipAndFile();//新建对像
 //删除temp文件夹
         dir_fullpath=(ExePath+"web_back").c_str();//删除web原文件
         if(TZipAndFile->deldir(dir_fullpath)) ｛｝
 delete TZipAndFile;// 删除对像