regex - VBA 文本文件搜索

Question

我正在尝试编写一个 VBA 程序，用于在文本文件中搜索用户名以查找用户的 IP 地址。因此，例如，给定以下输入，如果我搜索 Chris Trucker，我想在消息框中看到 192.168.130.22。

> 192.168.2.151,Super Fly,ABC\Flys,2012-05-18 16:11:29 
> 192.168.2.200,Rain,ABC\rain,2012-05-17 15:42:05 
> 192.168.2.210,Snow,ABC\Snow,2012-05-16 08:24:39 
> 192.168.2.78,Wind,ABC\wind,2012-05-02 19:24:06 
> 192.168.130.21,Mike Jordan,ABC\Jordanm,2012-05-18 17:28:11 
> 192.168.130.22,Chris Trucker,ABC\Truckerc,2012-05-18 17:28:11 
> 192.168.130.23,Chris Jackson,ABC\JacksonC,2012-05-18 17:04:39

尝试了以下但它是 VBScript

Const ForReading = 1

Set objRegEx = CreateObject("VBScript.RegExp")
objRegEx.Pattern = "JacksonC"  

Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("\\server\tsusers\Users.txt", ForReading)

Do Until objFile.AtEndOfStream
    strSearchString = objFile.ReadLine
    osakapc = Left(strSearchString,14)
    Set colMatches = objRegEx.Execute(strSearchString)

    If colMatches.Count = 1 Then 
        For Each strMatch in colMatches  


        Next
    End If
Loop

Answer 1

这是我的做法:

Option Explicit

Sub tester()
    Dim inputFilePath As String
    inputFilePath = "\\server\tsusers\Users.txt"

    MsgBox GetUserIpAddress("Chris Trucker", inputFilePath) 
                            ' or "JacksonC" or "Bozo" or whatever

End Sub

Function GetUserIpAddress(whatImLookingFor As String, _
    inputFilePath As String)
    Const ForReading = 1

    Dim foundIt As Boolean
    Dim thisLine As String
    Dim ipAddress As String
    Dim FSO As Object
    Dim filInput As Object

    Set FSO = CreateObject("Scripting.FileSystemObject")
    Set filInput = FSO.OpenTextFile(inputFilePath, ForReading)

    foundIt = False
    Do Until filInput.AtEndOfStream
        thisLine = filInput.ReadLine
        If InStr(thisLine, whatImLookingFor) <> 0 Then
            foundIt = True
            ipAddress = Replace((Split(thisLine, ",")(0)), "> ", "")
            Exit Do
        End If
    Loop

    If foundIt Then
        GetUserIpAddress = ipAddress
    Else
        Err.Raise 9999, , _
            "I stiiiiiiiill haven't foooouuuund what I'm looking for."
    End If
End Function

如您所见，如果找不到用户名，此函数会抛出错误。

请注意，此功能允许您搜索长格式 (Chris Trucker) 或短格式 (Truckerc) 甚至时间戳 ( 2012-05-18 17:28:11)。但请注意，如果您的搜索词有多个实例，则只会返回与第一个实例对应的 IP 地址。如果您希望返回所有实例，则可以调整代码。

作为最后的评论，建议始终声明所有变量，并通过在代码顶部使用 Option Explicit 来强制自己这样做。