在VBscript中读写二进制文件

Question

我之前用ADODB.Stream来读取和写入二进制文件就是这个链接

如何在VBscript中使用ADODB.stream连接二进制文件

它工作正常唯一的问题是在Windows 2003服务器上禁用ADODB.stream,

还有另一种方法我可以在二进制模式下读取3个文件并将它们连接起来或将它们存储在VBscript中的一个文件中

谢谢Jp

Answer 1

根据Luc125和Alberto，这里提供了2个经过重做和简化的功能：

读取功能

Function readBinary(strPath)

    Dim oFSO: Set oFSO = CreateObject("Scripting.FileSystemObject")
    Dim oFile: Set oFile = oFSO.GetFile(strPath)

    If IsNull(oFile) Then MsgBox("File not found: " & strPath) : Exit Function

    With oFile.OpenAsTextStream()
        readBinary = .Read(oFile.Size)
        .Close
    End With

End Function

写功能

Function writeBinary(strBinary, strPath)

    Dim oFSO: Set oFSO = CreateObject("Scripting.FileSystemObject")

    ' below lines pupose: checks that write access is possible!
    Dim oTxtStream

    On Error Resume Next
    Set oTxtStream = oFSO.createTextFile(strPath)

    If Err.number <> 0 Then MsgBox(Err.message) : Exit Function
    On Error GoTo 0

    Set oTxtStream = Nothing
    ' end check of write access

    With oFSO.createTextFile(strPath)
        .Write(strBinary)
        .Close
    End With

End Function

Answer 2

一年前我遇到过类似的问题.我们知道TextStream对象适用于ANSI或Unicode文本数据,而不是二进制数据; 如果流是二进制的,它们的.readAll()方法会产生损坏的输出.但有解决方法.将字符逐个读入数组可以正常工作.这应该允许您将二进制数据读入VB字符串,并将其写回磁盘.当进一步操作这样的二进制字符串时,不要忘记某些操作可能导致断字符串,因为它们仅用于文本.我总是将二进制字符串转换为整数数组,然后再使用它们.

Function readBinary(path)
Dim a
Dim fso
Dim file
Dim i
Dim ts
Set fso = CreateObject("Scripting.FileSystemObject")
Set file = fso.getFile(path)
If isNull(file) Then
    MsgBox("File not found: " & path)
    Exit Function
End If
Set ts = file.OpenAsTextStream()
a = makeArray(file.size)
i = 0
' Do not replace the following block by readBinary = by ts.readAll(), it would result in broken output, because that method is not intended for binary data 
While Not ts.atEndOfStream
    a(i) = ts.read(1)
i = i + 1
Wend
ts.close
readBinary = Join(a,"")
End Function


Sub writeBinary(bstr, path)
Dim fso
Dim ts
Set fso = CreateObject("Scripting.FileSystemObject")
On Error Resume Next
Set ts = fso.createTextFile(path)
If Err.number <> 0 Then
    MsgBox(Err.message)
    Exit Sub
End If
On Error GoTo 0
ts.Write(bstr)
ts.Close
End Sub

Function makeArray(n) ' Small utility function
Dim s
s = Space(n)
makeArray = Split(s," ")
End Function

Answer 3

ADODB 流对象是 VBScript 读取二进制流的唯一本机方法。如果禁用 ADODB，您将需要安装一些其他第三方组件才能提供相同的功能。