text - 使用 vbscript 修改文本文件

Question

每天我们都会得到一个纯文本文件。有时文件中的某些行需要在处理之前删除。这些行可以出现在不同的地方，但总是以字符 6999 或 7999 开头。我们想运行一个脚本来删除这些特定的行。然而，这超出了我的范围，任何有一行以 6999 开头的地方都会有一行以 5442 开头，也需要删除，但前提是它出现在 6999 行之前。

我们是一家 Windows 商店，并将将此脚本作为 Windows 中简单批处理文件的一部分运行。我们不使用 Unix 或 Linux，也不想使用。

文件扩展名反射(reflect)了日期。今天的文件是file.100621，明天的文件是file.100622。我在这方面遇到了麻烦，因为 vbscript 似乎不喜欢 file.*

这是文本文件的示例:

4006006602    03334060000100580                                                 
40060066039    0334070000100580                                                 
700600000011571006210060001255863                                               
544264287250111000025000000000040008000801                                      
6999001000000000000000000000000000000000000000000000000000                      
6999001000000000000000000000000000000000000000000000000000                      
6999001000000000000000000000000000000000000000000000000000                      
799900000011571006210030000000000                                               
8007000000115710062102530054008920  

我们想删除此文件中的 5 行(5442 行、三个 6999 行和 7999 行)。

这是我在这个网站上找到的脚本示例，已经修改并取得了一些成功，但不知道如何删除行(只知道如何替换行中的数据)。我意识到这要么需要进行重大修改，要么需要完全放弃，但我发布此信息是为了提供我认为我们正在寻找的想法。我把它放在一个带有 cscript.exe 的目录中，并从一个简单的批处理文件中调用它:

Set objFS = CreateObject("Scripting.FileSystemObject")
strFile = "c:\temp\file.100621"
Set objFile = objFS.OpenTextFile(strFile)
Do Until objFile.AtEndOfStream
    strLine = objFile.ReadLine
    If InStr(strLine,"6999")> 0 Then
        strLine = Replace(strLine,"6999","delete line")
    End If 
    WScript.Echo strLine
Loop

这让我明白:

40060066039    0334070000100580                                                 
700600000011571006210060001255863                                               
544264287250111000025000000000040008000801                                      
delete line001000000000000000000000000000000000000000000000000000                      
delete line001000000000000000000000000000000000000000000000000000                      
delete line001000000000000000000000000000000000000000000000000000                      
799900000011571006210030000000000                                               
8007000000115710062102530054008920  

关闭!只需要删除行而不是写“删除行”。
因此，根据我的了解，以下是我的具体需求:

获取脚本以处理目录中的任何文件(一次只会有 1 个，但扩展名每天都在变化)

获取脚本以删除任何以 5442 开头的行，该行紧邻以 6999 开头的行

获取脚本以完全删除以 6999 和 7999 开头的那些行

Answer 1

我做了一些更改以尝试消除空行，我还添加了一个函数来循环输出文件并删除任何空行。希望这个有效。

Select Case Wscript.Arguments.Count
    case 1:
        strInput = GetFile(WScript.Arguments(0))
        RemoveUnwantedLines strInput, strInput
        RemoveBlankLines strInput
    case 2:
        strInput = GetFile(WScript.Arguments(0))
        strOutput = Wscript.Arguments(1)
        RemoveUnwantedLines strInput, strOutput
        RemoveBlankLines strOutput
End Select

Function GetFile(strDirectory)
    Set objFSO = CreateObject("Scripting.FileSystemObject")
    Set objFolder = objFSO.GetFolder(strDirectory)
    dateLastModified = Null
    strFile = ""
    For Each objFile in objFolder.Files
        If IsNull(dateLastModified) Then
            dateLastModified = objFile.DateLastModified
            strFile = objFile.Path
        ElseIf dateLastModified < objFile.DateLastModified Then
            dateLastModified = objFile.DateLastModified
            strFile = objFile.Path
        End If
    Next
    GetFile = strFile
End Function

Sub RemoveUnwantedLines(strInputFile, strOutputFile)
        'Open the file for reading.
    Set objFile = CreateObject("Scripting.FileSystemObject").OpenTextFile(strInputFile,1)
        'Read the entire file into memory.
    strFileText = objFile.ReadAll
        'Close the file.
    objFile.Close
        'Split the file at the new line character. *Use the Line Feed character (Char(10))
    arrFileText = Split(strFileText,Chr(10))
        'Open the file for writing.
    Set objFile = CreateObject("Scripting.FileSystemObject").OpenTextFile(strOutputFile,2,true)
        'Loop through the array of lines looking for lines to keep.
    For i = LBound(arrFileText) to UBound(arrFileText)
            'If the line is not blank process it.
        If arrFileText(i) <> "" Then
                'If the line starts "5442", see if the next line is "6999".
            If Left(arrFileText(i),4) = "5442" Then
                    'Make sure the next line exists (Don't want an out of bounds exception).
                If i + 1 <= UBound(arrFileText)Then
                        'If the next line is not "6999" 
                    If Left(arrFileText(i + 1), 4) <> "6999" Then
                            'Write the "5442" line to the file.
                        objFile.WriteLine(arrFileText(i))
                    End If
                Else
                        'If the next line does not exist, write the "5442" line to the file (without a new line).
                    objFile.WriteLine(arrFileText(i))
                End If              
                'If the line does not start with "6999" and the line does not start with "7999".
            Elseif Left(arrFileText(i),4) <> "6999"  AND Left(arrFileText(i),4) <> "7999" Then
                    'Write the line to the file.
                objFile.WriteLine(arrFileText(i))
            End If
        End If
    Next
        'Close the file.
    objFile.Close
    Set objFile = Nothing
End Sub

Sub RemoveBlankLines(strInputFile)
    Set objFile = CreateObject("Scripting.FileSystemObject").OpenTextFile(strInputFile,1)
        'Read the entire file into memory.
    strFileText = objFile.ReadAll
        'Close the file.
    objFile.Close
        'Split the file at the new line character.
    arrFileText = Split(strFileText,VbNewLine)
    Set objFile = CreateObject("Scripting.FileSystemObject").OpenTextFile(strInputFile,2,true)
        'Loop through the array of lines looking for lines to keep.
    For i = LBound(arrFileText) to UBound(arrFileText)
            'If the line is not blank.
        if arrFileText(i) <> "" Then
                'If there is another element.
            if i + 1 <= UBound(arrFileText) Then    
                    'If the next element is not blank.
                if arrFileText(i + 1) <> "" Then
                        'Write the line to the file.
                    objFile.WriteLine(arrFileText(i))
                Else
                        'Write the line to the file (Without a blank line).
                    objFile.Write(arrFileText(i))
                End If
            Else
                    'Write the line to the file (Without a blank line).
                objFile.Write(arrFileText(i))
            End If
        End If
    Next
    'Close the file.
    objFile.Close
    Set objFile = Nothing
End Sub 

要使用它，可以通过以下两种方式之一从命令行调用它。

RemoveUnwantedLines "C:\TestDirectory\" "C:\Output.txt"

或者

RemoveUnwantedLines "C:\TestDirectory\"