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PB使用WININET的FTP方式自动更新(四、下载)-数据库专栏,其他相关

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四、下载
(只是处理二级目录)
global type f_connect_ftpcopyfile from function_object
end type

forward prototypes
global function integer f_connect_ftpcopyfile (hprogressbar hpb_1, long al_copycount)
end prototypes

global function integer f_connect_ftpcopyfile (hprogressbar hpb_1, long al_copycount);
do while yield()
loop

string ls_directorya1 //远程目录
string ls_directorya2 //本地目录
string ls_filename,ls_file

//本地目录
ls_directorya2 = gs_application_path

string ls_directoryb1 //远程目录
string ls_directoryb2 //本地目录

string ls_filename1 //远程文件
string ls_filename2 //本地文件

long ll_hret
long ll_hftp1
long ll_hftp2
long ll_fftp1
long ll_fftp2
long ll_m
long ll_filehandle1,ll_filehandle2

integer li_ret

boolean lb_success
boolean lb_find

s_win32_find_data ss_file1,ss_file2

w_autodown_test.st_ts.text = 正在检查需要更新软件的数量…
li_ret = f_connect_ftpserver()
if li_ret = -1 then return -1
w_autodown_test.st_ts.text = 正在更新软件版本…
//建立连接
ll_hret = internetopena(gs_application_name,0,,,0)
choose case li_ret
 case 1
  ls_directorya1 = gs_ftpdir1
  ll_hftp1 = internetconnecta(ll_hret,gs_ftpserver1,gl_ftploginport1,gs_ftploginuser1,gs_ftploginpass1,1,0,0)
 case 2
  ls_directorya1 = gs_ftpdir2
  ll_hftp1 = internetconnecta(ll_hret,gs_ftpserver2,gl_ftploginport2,gs_ftploginuser2,gs_ftploginpass2,1,0,0)
 case 3
  ls_directorya1 = gs_ftpdir3
  ll_hftp1 = internetconnecta(ll_hret,gs_ftpserver3,gl_ftploginport3,gs_ftploginuser3,gs_ftploginpass3,1,0,0)
 case else
  internetclosehandle(ll_hret);
  return -1
end choose
//进入ftp目录
lb_success = ftpsetcurrentdirectorya(ll_hftp1,ls_directorya1)
if not lb_success then
 internetclosehandle(ll_hret);
 internetclosehandle(ll_hftp1);
 return -1
end if
//获取第一个文件
ll_fftp1 = ftpfindfirstfilea(ll_hftp1,,ss_file1,0,0)
if ll_fftp1 = 0 then
 internetclosehandle(ll_hret);
 internetclosehandle(ll_hftp1);
 internetclosehandle(ll_fftp1);
 return 0
end if
//初始化提示栏
hpb_1.position = 0
ll_m = 0
//是目录
if ss_file1.dwfileattributes = 16 then
 //远程目录
 ls_directoryb1 = ls_directorya1 + / + ss_file1.cfilename
 //本地目录
 ls_directoryb2 = ls_directorya2 + \ + ss_file1.cfilename
 //本地目录不存在的创建目录
 if directoryexists(ls_directoryb2) = false then
  createdirectory(ls_directoryb2)
  ll_m++
  hpb_1.position = ll_m / al_copycount * 100
 end if
 //创建第二个目录句柄
 choose case li_ret
  case 1
   ll_hftp2 = internetconnecta(ll_hret,gs_ftpserver1,gl_ftploginport1,gs_ftploginuser1,gs_ftploginpass1,1,0,0)
  case 2
   ll_hftp2 = internetconnecta(ll_hret,gs_ftpserver2,gl_ftploginport2,gs_ftploginuser2,gs_ftploginpass2,1,0,0)
  case 3
   ll_hftp2 = internetconnecta(ll_hret,gs_ftpserver3,gl_ftploginport3,gs_ftploginuser3,gs_ftploginpass3,1,0,0)
 end choose
 //转移到第二级目录
 lb_success = ftpsetcurrentdirectorya(ll_hftp2,ls_directoryb1)
 if lb_success  then
  //浏览目录内容
  ll_fftp2 = ftpfindfirstfilea(ll_hftp2,,ss_file1,0,0)
  //本地文件
  ls_filename2 = ls_directoryb2 + \ + ss_file1.cfilename
  if fileexists(ls_filename2) = false then
   //本地文件不存在的,直接获取
   ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
   ll_m++
   hpb_1.position = ll_m / al_copycount * 100
  else //本地文件存在的,比较文件时间
   ll_filehandle2 = findfirstfilea(ls_filename2,ss_file2)
   findclose(ll_filehandle2)
   choose case comparefiletime(ss_file1.ftlastwritetime,ss_file2.ftlastwritetime)
    case 0
     //两个时间相等,就返回零
    case 1
     //如lpfiletime2小于lpfiletime1,返回1
     //下载
     ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
     ll_m++
     hpb_1.position = ll_m / al_copycount * 100
    case -1
     //如lpfiletime1小于lpfiletime2,返回-1
   end choose
  end if
  //遍历目录
  do while internetfindnextfilea(ll_fftp2, ss_file1)
   yield()
   //本地文件
   ls_filename2 = ls_directoryb2 + \ + ss_file1.cfilename
   if fileexists(ls_filename2) = false then
    //本地文件不存在的,直接获取
    ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
    ll_m++
    hpb_1.position = ll_m / al_copycount * 100
   else //本地文件存在的,比较文件时间
    ll_filehandle2 = findfirstfilea(ls_filename2,ss_file2)
    findclose(ll_filehandle2)
    choose case comparefiletime(ss_file1.ftlastwritetime,ss_file2.ftlastwritetime)
     case 0
      //两个时间相等,就返回零
     case 1
      //如lpfiletime2小于lpfiletime1,返回1
      //下载
      ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
      ll_m++
      hpb_1.position = ll_m / al_copycount * 100
     case -1
      //如lpfiletime1小于lpfiletime2,返回-1
    end choose
   end if
  loop
  internetclosehandle(ll_hftp2);
  internetclosehandle(ll_fftp2);
 end if
else //是文件
 //本地文件
 ls_filename2 = ls_directorya2 + \ + ss_file1.cfilename
 if fileexists(ls_filename2) = false then
  //本地文件不存在的,直接获取
  lb_find = ftpgetfilea(ll_hftp1,ss_file1.cfilename,ls_filename2,false,0,0,0)
  ll_m++
  hpb_1.position = ll_m / al_copycount * 100
 else //本地文件存在的,比较文件时间
  ll_filehandle2 = findfirstfilea(ls_filename2,ss_file2)
  findclose(ll_filehandle2)
  choose case comparefiletime(ss_file1.ftlastwritetime,ss_file2.ftlastwritetime)
   case 0
    //两个时间相等,就返回零
   case 1
    //如lpfiletime2小于lpfiletime1,返回1
    //下载
    lb_find = ftpgetfilea(ll_hftp1,ss_file1.cfilename,ls_filename2,false,0,0,0)
    ll_m++
    hpb_1.position = ll_m / al_copycount * 100
   case -1
    //如lpfiletime1小于lpfiletime2,返回-1
  end choose
 end if
end if
//遍历目录
do while internetfindnextfilea(ll_fftp1, ss_file1)
 yield()
 //是目录
 if ss_file1.dwfileattributes = 16 then
  //远程目录
  ls_directoryb1 = ls_directorya1 + / + ss_file1.cfilename
  //本地目录
  ls_directoryb2 = ls_directorya2 + \ + ss_file1.cfilename
  //本地目录不存在的创建目录
  if directoryexists(ls_directoryb2) = false then
   createdirectory(ls_directoryb2)
   ll_m++
   hpb_1.position = ll_m / al_copycount * 100
  end if
  //创建第二个目录句柄
  choose case li_ret
   case 1
    ll_hftp2 = internetconnecta(ll_hret,gs_ftpserver1,gl_ftploginport1,gs_ftploginuser1,gs_ftploginpass1,1,0,0)
   case 2
    ll_hftp2 = internetconnecta(ll_hret,gs_ftpserver2,gl_ftploginport2,gs_ftploginuser2,gs_ftploginpass2,1,0,0)
   case 3
    ll_hftp2 = internetconnecta(ll_hret,gs_ftpserver3,gl_ftploginport3,gs_ftploginuser3,gs_ftploginpass3,1,0,0)
  end choose
  //转移到第二级目录
  lb_success = ftpsetcurrentdirectorya(ll_hftp2,ls_directoryb1)
  if lb_success then
   //浏览目录内容
   ll_fftp2 = ftpfindfirstfilea(ll_hftp2,,ss_file1,0,0)
   //本地文件
   ls_filename2 = ls_directoryb2 + \ + ss_file1.cfilename
   if fileexists(ls_filename2) = false then
    //本地文件不存在的,直接获取
    lb_find = ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
    ll_m++
    hpb_1.position = ll_m / al_copycount * 100
   else //本地文件存在的,比较文件时间
    ll_filehandle2 = findfirstfilea(ls_filename2,ss_file2)
    findclose(ll_filehandle2)
    choose case comparefiletime(ss_file1.ftlastwritetime,ss_file2.ftlastwritetime)
     case 0
      //两个时间相等,就返回零
     case 1
      //如lpfiletime2小于lpfiletime1,返回1
      //下载
      lb_find = ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
      ll_m++
      hpb_1.position = ll_m / al_copycount * 100
     case -1
      //如lpfiletime1小于lpfiletime2,返回-1
    end choose
   end if
   //遍历目录
   do while internetfindnextfilea(ll_fftp2, ss_file1)
    yield()
    //本地文件
    ls_filename2 = ls_directoryb2 + \ + ss_file1.cfilename
    if fileexists(ls_filename2) = false then
     //本地文件不存在的,直接获取
     lb_find = ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
     ll_m++
     hpb_1.position = ll_m / al_copycount * 100
    else //本地文件存在的,比较文件时间
     ll_filehandle2 = findfirstfilea(ls_filename2,ss_file2)
     findclose(ll_filehandle2)
     choose case comparefiletime(ss_file1.ftlastwritetime,ss_file2.ftlastwritetime)
      case 0
       //两个时间相等,就返回零
      case 1
       //如lpfiletime2小于lpfiletime1,返回1
       //下载
       lb_find = ftpgetfilea(ll_hftp2,ss_file1.cfilename,ls_filename2,false,0,0,0)
       ll_m++
       hpb_1.position = ll_m / al_copycount * 100
      case -1
       //如lpfiletime1小于lpfiletime2,返回-1
     end choose
    end if
   loop
   internetclosehandle(ll_hftp2);
   internetclosehandle(ll_fftp2);
  end if
 else //是文件
  //本地文件
  ls_filename2 = ls_directorya2 + \ + ss_file1.cfilename
  if fileexists(ls_filename2) = false then
   //本地文件不存在的,直接获取
   lb_find = ftpgetfilea(ll_hftp1,ss_file1.cfilename,ls_filename2,false,0,0,0)
   ll_m++
   hpb_1.position = ll_m / al_copycount * 100
  else //本地文件存在的,比较文件时间
   ll_filehandle2 = findfirstfilea(ls_filename2,ss_file2)
   findclose(ll_filehandle2)
   choose case comparefiletime(ss_file1.ftlastwritetime,ss_file2.ftlastwritetime)
    case 0
     //两个时间相等,就返回零
    case 1
     //如lpfiletime2小于lpfiletime1,返回1
     //下载
     lb_find = ftpgetfilea(ll_hftp1,ss_file1.cfilename,ls_filename2,false,0,0,0)
     ll_m++
     hpb_1.position = ll_m / al_copycount * 100
    case -1
     //如lpfiletime1小于lpfiletime2,返回-1
   end choose
  end if
 end if
loop
internetclosehandle(ll_hret);
internetclosehandle(ll_hftp1);
internetclosehandle(ll_fftp1);
return 1

end function

 

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