您如何使用 VBscript 写入或读取具有自定义扩展名的外部文件（例如，可以使用 .cyc 代替 .txt 扩展名）？
我不知道怎么做，而且似乎无法弄清楚。对于读取文件，是否可以只读取文件的一部分？例如，如果我有一行
string1=你好世界！
在我的文件内部，我的脚本如何仅从 string1 行读取以及如何将文本值分配给 vbscript 文件中的字符串？
那么，如何将单个值写入我的文件？
为了澄清，我基本上是在尝试使用外部文件作为配置/数据文件。
这可能是一个非常愚蠢的问题，如果是，我真的很抱歉。
编辑：这是一个两部分的问题，我需要知道上面指定的读写文件的代码，以及如何使用自定义扩展。
【问题讨论】：
如果您想在随机位置读取和写入文本文件，最好的办法是使用 INI 文件。
INI 文件包含如下所示的条目：
[owner]
name=John Doe
organization=Acme Products
要读取 ini 文件，您需要一个可以这样调用的函数：
Dim s as string
s=ReadINI("c:\myfolder\myfile.ext", "owner", "name")
...这会将“John Doe”放在 s 中。
执行此操作的代码在这里： http://cwashington.netreach.net/depo/view.asp?Index=553
编写 INI 文件的工作方式相同。
这是另一个例子：
WriteINI("c:\myfolder\myfile.ext", "MySection", "MyItem", "MyValue")
创建一个如下所示的 INI 文件：
[MySection]
MyItem=MyValue
您可以根据需要在每个部分中包含任意数量的不同部分和项目。要检索所需的值，您只需使用要检索的值的部分名称和项名称调用 ReadINI。
【讨论】：
您所要做的就是在文件名末尾包含扩展名，如下所示：
c:\myfolder\myfile.ext
当您打开文件进行写入时。
下面是一些示例代码，用于打开一个新文件，向其中写入一行文本，然后关闭该文件：
Set myFSO = CreateObject("Scripting.FileSystemObject")
Set WriteStuff = myFSO.OpenTextFile("c:\myfolder\myfile.ext", 2, true)
WriteStuff.WriteLine("Hello World.")
WriteStuff.Close
Set WriteStuff = nothing
Set myFSO = nothing
这里是读取它的代码：
Dim S as String
Set myFSO = CreateObject("Scripting.FileSystemObject")
Set ReadStuff = myFSO.OpenTextFile("c:\myfolder\myfile.ext", 1)
S=Readstuff.ReadLine
ReadStuff.Close
Set ReadStuff = nothing
Set myFSO = nothing
http://www.activexperts.com/activmonitor/windowsmanagement/adminscripts/other/textfiles/ 有更多示例
【讨论】：
以下类从 VB.Net 读写 INI 文件：
Class INI
#Region "API Calls"
' standard API declarations for INI access
' changing only "As Long" to "As Int32" (As Integer would work also)
Private Declare Unicode Function WritePrivateProfileString Lib "kernel32" _
Alias "WritePrivateProfileStringW" (ByVal lpApplicationName As String, _
ByVal lpKeyName As String, ByVal lpString As String, _
ByVal lpFileName As String) As Int32
Private Declare Unicode Function GetPrivateProfileString Lib "kernel32" _
Alias "GetPrivateProfileStringW" (ByVal lpApplicationName As String, _
ByVal lpKeyName As String, ByVal lpDefault As String, _
ByVal lpReturnedString As String, ByVal nSize As Int32, _
ByVal lpFileName As String) As Int32
#End Region
Public Overloads Function INIRead(ByVal INIPath As String, _
ByVal SectionName As String, ByVal KeyName As String, _
ByVal DefaultValue As String) As String
' primary version of call gets single value given all parameters
Dim n As Int32
Dim sData As String
sData = space$(1024) ' allocate some room
n = GetPrivateProfileString(SectionName, KeyName, DefaultValue, _
sData, sData.Length, INIPath)
If n > 0 Then ' return whatever it gave us
INIRead = sdata.Substring(0, n)
Else
iniread = ""
End If
End Function
#Region "INIRead Overloads"
Public Overloads Function INIRead(ByVal INIPath As String, _
ByVal SectionName As String, ByVal KeyName As String) As String
' overload 1 assumes zero-length default
Return INIRead(inipath, sectionname, KeyName, "")
End Function
Public Overloads Function INIRead(ByVal INIPath As String, _
ByVal SectionName As String) As String
' overload 2 returns all keys in a given section of the given file
Return INIRead(inipath, sectionname, Nothing, "")
End Function
Public Overloads Function INIRead(ByVal INIPath As String) As String
' overload 3 returns all section names given just path
Return INIRead(inipath, Nothing, Nothing, "")
End Function
#End Region
Public Sub INIWrite(ByVal INIPath As String, ByVal SectionName As String, _
ByVal KeyName As String, ByVal TheValue As String)
Call WritePrivateProfileString(SectionName, KeyName, TheValue, INIPath)
End Sub
Public Overloads Sub INIDelete(ByVal INIPath As String, ByVal SectionName As String, _
ByVal KeyName As String) ' delete single line from section
Call WritePrivateProfileString(SectionName, KeyName, Nothing, INIPath)
End Sub
Public Overloads Sub INIDelete(ByVal INIPath As String, ByVal SectionName As String)
' delete section from INI file
Call WritePrivateProfileString(SectionName, Nothing, Nothing, INIPath)
End Sub
End Class
【讨论】：
旋风：
此代码已经过测试，所以我知道它可以工作。我从http://www.robvanderwoude.com/vbstech_files_ini.php得到它
Function ReadIni( myFilePath, mySection, myKey )
' This function returns a value read from an INI file
'
' Arguments:
' myFilePath [string] the (path and) file name of the INI file
' mySection [string] the section in the INI file to be searched
' myKey [string] the key whose value is to be returned
'
' Returns:
' the [string] value for the specified key in the specified section
'
' CAVEAT: Will return a space if key exists but value is blank
'
' Written by Keith Lacelle
' Modified by Denis St-Pierre and Rob van der Woude
Const ForReading = 1
Const ForWriting = 2
Const ForAppending = 8
Dim intEqualPos
Dim objFSO, objIniFile
Dim strFilePath, strKey, strLeftString, strLine, strSection
Set objFSO = CreateObject( "Scripting.FileSystemObject" )
ReadIni = ""
strFilePath = Trim( myFilePath )
strSection = Trim( mySection )
strKey = Trim( myKey )
If objFSO.FileExists( strFilePath ) Then
Set objIniFile = objFSO.OpenTextFile( strFilePath, ForReading, False )
Do While objIniFile.AtEndOfStream = False
strLine = Trim( objIniFile.ReadLine )
' Check if section is found in the current line
If LCase( strLine ) = "[" & LCase( strSection ) & "]" Then
strLine = Trim( objIniFile.ReadLine )
' Parse lines until the next section is reached
Do While Left( strLine, 1 ) <> "["
' Find position of equal sign in the line
intEqualPos = InStr( 1, strLine, "=", 1 )
If intEqualPos > 0 Then
strLeftString = Trim( Left( strLine, intEqualPos - 1 ) )
' Check if item is found in the current line
If LCase( strLeftString ) = LCase( strKey ) Then
ReadIni = Trim( Mid( strLine, intEqualPos + 1 ) )
' In case the item exists but value is blank
If ReadIni = "" Then
ReadIni = " "
End If
' Abort loop when item is found
Exit Do
End If
End If
' Abort if the end of the INI file is reached
If objIniFile.AtEndOfStream Then Exit Do
' Continue with next line
strLine = Trim( objIniFile.ReadLine )
Loop
Exit Do
End If
Loop
objIniFile.Close
Else
WScript.Echo strFilePath & " doesn't exists. Exiting..."
Wscript.Quit 1
End If
End Function
Sub WriteIni( myFilePath, mySection, myKey, myValue )
' This subroutine writes a value to an INI file
'
' Arguments:
' myFilePath [string] the (path and) file name of the INI file
' mySection [string] the section in the INI file to be searched
' myKey [string] the key whose value is to be written
' myValue [string] the value to be written (myKey will be
' deleted if myValue is <DELETE_THIS_VALUE>)
'
' Returns:
' N/A
'
' CAVEAT: WriteIni function needs ReadIni function to run
'
' Written by Keith Lacelle
' Modified by Denis St-Pierre, Johan Pol and Rob van der Woude
Const ForReading = 1
Const ForWriting = 2
Const ForAppending = 8
Dim blnInSection, blnKeyExists, blnSectionExists, blnWritten
Dim intEqualPos
Dim objFSO, objNewIni, objOrgIni, wshShell
Dim strFilePath, strFolderPath, strKey, strLeftString
Dim strLine, strSection, strTempDir, strTempFile, strValue
strFilePath = Trim( myFilePath )
strSection = Trim( mySection )
strKey = Trim( myKey )
strValue = Trim( myValue )
Set objFSO = CreateObject( "Scripting.FileSystemObject" )
Set wshShell = CreateObject( "WScript.Shell" )
strTempDir = wshShell.ExpandEnvironmentStrings( "%TEMP%" )
strTempFile = objFSO.BuildPath( strTempDir, objFSO.GetTempName )
Set objOrgIni = objFSO.OpenTextFile( strFilePath, ForReading, True )
Set objNewIni = objFSO.CreateTextFile( strTempFile, False, False )
blnInSection = False
blnSectionExists = False
' Check if the specified key already exists
blnKeyExists = ( ReadIni( strFilePath, strSection, strKey ) <> "" )
blnWritten = False
' Check if path to INI file exists, quit if not
strFolderPath = Mid( strFilePath, 1, InStrRev( strFilePath, "\" ) )
If Not objFSO.FolderExists ( strFolderPath ) Then
WScript.Echo "Error: WriteIni failed, folder path (" _
& strFolderPath & ") to ini file " _
& strFilePath & " not found!"
Set objOrgIni = Nothing
Set objNewIni = Nothing
Set objFSO = Nothing
WScript.Quit 1
End If
While objOrgIni.AtEndOfStream = False
strLine = Trim( objOrgIni.ReadLine )
If blnWritten = False Then
If LCase( strLine ) = "[" & LCase( strSection ) & "]" Then
blnSectionExists = True
blnInSection = True
ElseIf InStr( strLine, "[" ) = 1 Then
blnInSection = False
End If
End If
If blnInSection Then
If blnKeyExists Then
intEqualPos = InStr( 1, strLine, "=", vbTextCompare )
If intEqualPos > 0 Then
strLeftString = Trim( Left( strLine, intEqualPos - 1 ) )
If LCase( strLeftString ) = LCase( strKey ) Then
' Only write the key if the value isn't empty
' Modification by Johan Pol
If strValue <> "<DELETE_THIS_VALUE>" Then
objNewIni.WriteLine strKey & "=" & strValue
End If
blnWritten = True
blnInSection = False
End If
End If
If Not blnWritten Then
objNewIni.WriteLine strLine
End If
Else
objNewIni.WriteLine strLine
' Only write the key if the value isn't empty
' Modification by Johan Pol
If strValue <> "<DELETE_THIS_VALUE>" Then
objNewIni.WriteLine strKey & "=" & strValue
End If
blnWritten = True
blnInSection = False
End If
Else
objNewIni.WriteLine strLine
End If
Wend
If blnSectionExists = False Then ' section doesn't exist
objNewIni.WriteLine
objNewIni.WriteLine "[" & strSection & "]"
' Only write the key if the value isn't empty
' Modification by Johan Pol
If strValue <> "<DELETE_THIS_VALUE>" Then
objNewIni.WriteLine strKey & "=" & strValue
End If
End If
objOrgIni.Close
objNewIni.Close
' Delete old INI file
objFSO.DeleteFile strFilePath, True
' Rename new INI file
objFSO.MoveFile strTempFile, strFilePath
Set objOrgIni = Nothing
Set objNewIni = Nothing
Set objFSO = Nothing
Set wshShell = Nothing
End Sub
'
'
Call WriteINI("c:\testarea\Test.INI","Section1","Item1","Value1")
Call WriteINI("c:\testarea\Test.INI","Section1","Item2","Value2")
Call WriteINI("c:\testarea\Test.INI","Section1","Item3","Value3")
Call WriteINI("c:\testarea\Test.INI","Section2","Item4","Value4")
Call WriteINI("c:\testarea\Test.INI","Section2","Item5","Value5")
【讨论】：