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Par2: Copying files and directories using API calls
1998-04-22 -- Stephen Bottomley
 
I'm including a copy of a procedure I have used successfully in 32bit
applications on a Win95 machine copying directory trees to a Novell 4.1
server complete with directory creation.  The bit's I've commented out are
just for error logs I use.

   MAP
     MODULE('winapi')
       GetLastError(),DWORD,PASCAL,RAW,DLL(dll_mode)
       CopyFile(*CSTRING lpExistingFileName,*CSTRING lpNewFileName,BOOL
bFailIfExist),BOOL,RAW,PASCAL,NAME('CopyFileA'),DLL(dll_mode)
       CreateDirectory(*CSTRING lpPathName,LONG
lpSecurityAttributes),BOOL,RAW,PASCAL,NAME('CreateDirectoryA'),DLL(dll_mode)

FormatMessage(DWORD,LPCVOID,DWORD,DWORD,*LPSTR,DWORD,va_list),DWORD,PASCAL,R
AW,NAME('FormatMessageA'),DLL(dll_mode)
     END
     MODULE('C_LIB')
       Access(*CSTRING,SIGNED),SIGNED,RAW,NAME('_access')
     END
     MODULE('COPYTREE.CLW')
       CopyTree               FUNCTION(STRING DirName,STRING TrgtDir),BYTE
     END
  END



CopyTree             PROCEDURE  (STRING DirName,STRING TrgtDir) ! Declare
Procedure
RetVal               BYTE,AUTO
LogId                LONG
ErrorText            CSTRING(256)
SourceDir            CSTRING(256),AUTO
TargetDir            CSTRING(256),AUTO
ActionEntry          CSTRING(256),AUTO
ActionTarget         CSTRING(256),AUTO
MsgId                    ULONG,AUTO
RecCount             LONG,AUTO
RC                   LONG,AUTO
SRQ                  QUEUE,PRE()
name                 STRING(13)
date                 LONG
time                 LONG
size                 LONG
attrib               BYTE
                     END
SECURITY_ATTRIBUTES GROUP
nLength               DWORD
lpSecurityDescriptor  LPVOID
bInheritHandle        BOOL
                    END

window WINDOW,AT(,,121,22),FONT('MS Sans
Serif',8,,),CENTER,TIMER(1),SYSTEM,GRAY,DOUBLE
     END
  CODE
  RetVal = True            !Set to Suceess
  SourceDir = DirName
  TargetDir = TrgtDir
  if SourceDir[len(clip(SourceDir))] <> '\'
    SourceDir = clip(SourceDir) & '\'
  .
  if TargetDir[len(clip(TargetDir))] <> '\'
    TargetDir = clip(TargetDir) & '\'
  .
  if not access(TargetDir,0) = 0
!    LogId = AddLog()
    clear(ErrorText)
    if not CreateDirectory(TargetDir,address(SECURITY_ATTRIBUTES))
      MsgId =
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM+FORMAT_MESSAGE_IGNORE_INSERTS,0,Get
LastError(),0,ErrorText,size(ErrorText),0)
!      LogId = AddLog(LogId,,77,'Unable to create: ' &
clip(TargetDir),'',ErrorText)
      RetVal = False
      return(RetVal)
    else
!      LogId = AddLog(LogId,,0,'Succefull create: ' & clip(TargetDir),)
    .
  .
  Directory(SRQ,clip(SourceDir) & '*.*',1+2+4+10h)  !All files and
directories
  RecCount = records(SRQ)
  loop RC = RecCount to 1 by -1
    get(SRQ,RC)
    if band(SRQ.Attrib,10h) and (SRQ.Name = '..' or SRQ.Name = '.')
      delete(SRQ)                                  !Get rid of parent
directories
    .
  .
  sort(SRQ,SRQ.Attrib)
  open(window)
  window{PROP:Hide} = True
  get(SRQ,records(SRQ))
  accept
    case EVENT()
    of EVENT:Timer
      if not records(SRQ)                  !This needs work
        post(EVENT:CloseWindow)
        cycle
      .
      get(SRQ,records(SRQ))                !This needs work
      if band(SRQ.Attrib,10h)
        post(EVENT:CloseWindow)
        cycle
      .
      ActionEntry = clip(SourceDir) & SRQ.Name
      ActionTarget = clip(TargetDir) & SRQ.Name
      ?String1{PROP:Text} = ActionEntry
      display(?String1)
      LogId = AddLog()
      Clear(ErrorText)
      if not CopyFile(ActionEntry,ActionTarget,0)
        RetVal = False
        MsgId =
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM+FORMAT_MESSAGE_IGNORE_INSERTS,0,Get
LastError(),0,ErrorText,size(ErrorText),0)
!        AddLog(LogId,,77,ActionEntry,ActionTarget,ErrorText)
      else
!        AddLog(LogId,,0,ActionEntry,ActionTarget)
      .
      delete(SRQ)
    .
  .
  close(window)
  loop while records(SRQ)
    get(SRQ,records(SRQ))
    ActionEntry = clip(SourceDir) & SRQ.Name
    ActionTarget = clip(TargetDir) & SRQ.Name
    if not CopyTree(ActionEntry,ActionTarget)
      RetVal = False
    .
    delete(SRQ)
  .
  return RetVal



Printed November 21, 2024, 7:26 am
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