Question

我想找到一大块文件的哈希值并将该哈希值保存在另一个文件中。我想直接做，而不必将块保存在单独的文件中..这是我的程序。

 Const chunksize = 1024000000
 dim istream,ostream
  Sub WriteChunk(data)
   Set oStream = CreateObject("ADODB.Stream")
   oStream.Open
   oStream.Type = 1 
   oStream.Write data

   Dim WshShell, oExec, input,objfile2,str1
   Set WshShell = CreateObject("WScript.Shell")
   Set oExec    = WshShell.exec("C:\Users\Administrator\desktop\experimenting\md5.exe_
                             -odup5.txt """ & ostream.write & """")

   input = ""
      Do While oexec.status=0
     WScript.Sleep 50
     Loop
     oStream.Close
   End Sub

    Set iStream = CreateObject("ADODB.Stream")
     iStream.Open
   iStream.Type = 1  'binary
    Const FOR_READING = 1

     strFolder = "C:\test" 

     Set objFSO = CreateObject("Scripting.FileSystemObject")

     Set objFolder = objFSO.GetFolder(strFolder)

     Set colFiles = objFolder.Files

     For Each objFile In colFiles
      iStream.LoadFromFile objfile.path
        Do Until istream.EOS
      WriteChunk iStream.Read(chunksize)


      loop 


     Next

     ShowSubFolders(objFolder)


   Sub ShowSubFolders(objFolder)

   Set colFolders = objFolder.SubFolders

       For Each objSubFolder In colFolders

      set colFiles = objSubFolder.Files

      For Each objFile2 In colFiles


      iStream.LoadFromFile objfile2.path
      Do Until istream.EOS
      WriteChunk iStream.Read(chunksize)



        loop 
        Next

        ShowSubFolders(objSubFolder)

       Next

     End Sub


       iStream.Close

ostream.write不能用作参数。但我不知道什么可以用来代替那个......请帮助

Answer 1

Set oExec = WshShell.exec("C:\Users\Administrator\desktop\experimenting\md5.exe_
                     -odup5.txt """ & ostream.write & """")

上述操作会失败，因为你不能在字符串中使用换行。此外，ostream.write表示您正在尝试将写入 ADODB Stream对象。您实际想要做什么（假设我正确理解您的问题并且您正在使用this md5.exe）是这样的：

WshShell.Run "C:\...\md5.exe -ochunk_md5.txt -d""" & data & """"

要将所有数据块的结果写入同一文件，请执行以下操作：

WshShell.Run "%COMSPEC% /c md5.exe -o- -d""" & data & """>chunk_md5.txt", 1, True

或者像这样：

Set md5 = WshShell.Exec("md5.exe -o- -d""" & data & """")
Do While md5.Status = 0
  WScript.Sleep 100
Loop
objFSO.OpenTextFile("chunk_md5.txt", 8, True).Write md5.StdOut.ReadAll

或者您可以使用this VBScript来计算哈希并将结果写入文件。

如何找到一大块文件的哈希而不必将块保存在单独的文件中？

1 个答案: