[求助] 遍历文件夹下某种类型所有文件

Module DoWithWildcardMod  implicit none
  Interface 
    Subroutine IF_CallBack( cFile , iLoop )
      Character( Len = * ) , Intent( IN ) :: cFile
      Integer , Intent( IN ) :: iLoop
    End Subroutine IF_CallBack
  End Interface

contains

  Recursive Integer Function DoWithWildcard(cWildcard,level,CallBack,iTotal) result(nCurr)
    Use IFPort !// 如果是 Compaq 或 Digital，需改为 Use DFLib
    Character( Len = * ) , Intent( IN ) :: cWildcard
    Integer , Intent( IN )  :: level  !//搜索等级，-1表示无限搜索子目录。0表示不搜索子目录。1表示搜索一级子目录
    Integer , Intent( OUT ) :: iTotal
    Procedure(IF_CallBack) :: CallBack
    Type (FILE$INFO) :: stInfo
    Integer(Kind=INT_PTR_KIND()) :: iWildhandle 
    Integer :: k , j , t
    j = max(0,index( cWildcard , '\' , .true. ))
    nCurr = 0
    Do t = 1 , 2 !// File / Dir
      iWildhandle = FILE$FIRST
      Do
        if(t==1) then
          k = GetFileInfoQQ( cWildCard , stInfo , iWildhandle )
        else
          k = GetFileInfoQQ( cWildCard(:j)//'*', stInfo , iWildhandle )
        end if
        If ( iWildhandle == FILE$LAST ) exit
        If ( iWildhandle == FILE$ERROR ) then
          k = GetLastErrorQQ()
          if(k==ERR$NOMEM) then
            nCurr = -1
            return
          end if
          nCurr = 0
          exit
        End If
        If ( t == 1 .and. iand(stInfo%permit,FILE$DIR)==0 ) then
          iTotal = iTotal + 1
          nCurr  = nCurr  + 1
          call CallBack( trim(cWildcard(:j)//stInfo%Name) , iTotal )
        Else If ( t == 2 .and. iand(stInfo%permit,FILE$DIR)==FILE$DIR ) then
          if( level == 0 ) exit
          if( stInfo%Name(1:1)=='.' ) cycle
          k = DoWithWildcard( cWildcard(:j)//trim(stInfo%Name)//'\'//cWildcard(j+1:) , level-1 , CallBack , iTotal )
          if( k < 0 ) return
        End If
      End Do
    End Do    
  End Function DoWithWildcard

End Module DoWithWildcardMod

Program www_fcode_cn
 use DoWithWildcardMod
 Implicit None
 integer :: n , j
 n = 0 !//必须先初始化为0
 j = DoWithWildcard( "D:\ssd\*.txt" , -1 , ToDoOneFile , n )
 write(*,*) '共',n,'个文件'

contains

  Subroutine ToDoOneFile( cFile , iLoop )
    Character( Len = * ) , Intent( IN ) :: cFile
    Integer , Intent( IN ) :: iLoop
    Write( * , * ) '第',iLoop,'个文件：',cFile
  End Subroutine ToDoOneFile

End Program www_fcode_cn