ASP对表单操作的程序实例 - ASP教程

<%
  ' -- Loader.asp --
  ' -- version 1.5.2
  ' -- last updated 12/5/2002
  '
  ' Faisal Khan
  ' faisal@stardeveloper.com
  ' www.stardeveloper.com
  ' Class for handling binary uploads
  Class Loader
    Private dict
    Private Sub Class_Initialize
      Set dict = Server.CreateObject("Scripting.Dictionary")
    End Sub
    Private Sub Class_Terminate
      If IsObject(intDict) Then
        intDict.RemoveAll
        Set intDict = Nothing
      End If
      If IsObject(dict) Then
        dict.RemoveAll
        Set dict = Nothing
      End If
    End Sub
    Public Property Get Count
      Count = dict.Count
    End Property
    Public Sub Initialize
      If Request.TotalBytes > 0 Then
        Dim binData
          binData = Request.BinaryRead(Request.TotalBytes)
          getData binData
      End If
    End Sub
    Public Function getFileData(name)
      If dict.Exists(name) Then
        getFileData = dict(name).Item("Value")
        Else
        getFileData = ""
      End If
    End Function
    Public Function getValue(name)
      Dim gv
      If dict.Exists(name) Then
        gv = CStr(dict(name).Item("Value"))
        
        gv = Left(gv,Len(gv)-2)
        getValue = gv
      Else
        getValue = ""
      End If
    End Function
    Public Function saveToFile(name, path)
      If dict.Exists(name) Then
        Dim temp
          temp = dict(name).Item("Value")
        Dim fso
          Set fso = Server.CreateObject("Scripting.FileSystemObject")
        Dim file
          Set file = fso.CreateTextFile(path)
            For tPoint = 1 to LenB(temp)
                file.Write Chr(AscB(MidB(temp,tPoint,1)))
            Next
            file.Close
          saveToFile = True
      Else
          saveToFile = False
      End If
    End Function
    Public Function getFileName(name)
      If dict.Exists(name) Then
        Dim temp, tempPos
          temp = dict(name).Item("FileName")
          tempPos = 1 + InStrRev(temp, "")
          getFileName = Mid(temp, tempPos)
      Else
        getFileName = ""
      End If
    End Function
    Public Function getFilePath(name)
      If dict.Exists(name) Then
        Dim temp, tempPos
          temp = dict(name).Item("FileName")
          tempPos = InStrRev(temp, "")
          getFilePath = Mid(temp, 1, tempPos)
      Else
        getFilePath = ""
      End If
    End Function
    Public Function getFilePathComplete(name)
      If dict.Exists(name) Then
        getFilePathComplete = dict(name).Item("FileName")
      Else
        getFilePathComplete = ""
      End If
    End Function
    Public Function getFileSize(name)
      If dict.Exists(name) Then
        getFileSize = LenB(dict(name).Item("Value"))
      Else
        getFileSize = 0
      End If
    End Function
    Public Function getFileSizeTranslated(name)
      If dict.Exists(name) Then
        temp = LenB(dict(name).Item("Value"))
          If temp <= 1024 Then
            getFileSizeTranslated = temp & " bytes"  
          Else
            temp = FormatNumber((temp / 1024), 2)
            getFileSizeTranslated = temp & " kilobytes"
          End If
      Else
        getFileSizeTranslated = ""
      End If
    End Function
    Public Function getContentType(name)
      If dict.Exists(name) Then
        getContentType = dict(name).Item("ContentType")
      Else
        getContentType = ""
      End If
    End Function
  Private Sub getData(rawData)
    Dim separator 
      separator = MidB(rawData, 1, InstrB(1, rawData, ChrB(13)) - 1)
    Dim lenSeparator
      lenSeparator = LenB(separator)
    Dim currentPos
      currentPos = 1
    Dim inStrByte
      inStrByte = 1
    Dim value, mValue
    Dim tempValue
      tempValue = ""
    While inStrByte > 0
      inStrByte = InStrB(currentPos, rawData, separator)
      mValue = inStrByte - currentPos
      If mValue > 1 Then
        value = MidB(rawData, currentPos, mValue)
        Dim begPos, endPos, midValue, nValue
        Dim intDict
          Set intDict = Server.CreateObject("Scripting.Dictionary")
          begPos = 1 + InStrB(1, value, ChrB(34))
          endPos = InStrB(begPos + 1, value, ChrB(34))
          nValue = endPos
        Dim nameN
          nameN = MidB(value, begPos, endPos - begPos)
        Dim nameValue, isValid
          isValid = True
          If InStrB(1, value, stringToByte("Content-Type")) > 1 Then
            begPos = 1 + InStrB(endPos + 1, value, ChrB(34))
            endPos = InStrB(begPos + 1, value, ChrB(34))
            If endPos = 0 Then
              endPos = begPos + 1
              isValid = False
            End If
            midValue = MidB(value, begPos, endPos - begPos)
              intDict.Add "FileName", trim(byteToString(midValue))
          begPos = 14 + InStrB(endPos + 1, value, stringToByte("Content-Type:"))
          endPos = InStrB(begPos, value, ChrB(13))
            midValue = MidB(value, begPos, endPos - begPos)
              intDict.Add "ContentType", trim(byteToString(midValue))
            begPos = endPos + 4
            endPos = LenB(value)
            nameValue = MidB(value, begPos, ((endPos - begPos) - 1))
          Else
            nameValue = trim(byteToString(MidB(value, nValue + 5)))
          End If
          If isValid = True Then
            intDict.Add "Value", nameValue
            intDict.Add "Name", nameN
            dict.Add byteToString(nameN), intDict
          End If
      End If
      currentPos = lenSeparator + inStrByte
    Wend
  End Sub
  End Class
  Private Function stringToByte(toConv)
    Dim tempChar
     For i = 1 to Len(toConv)
       tempChar = Mid(toConv, i, 1)
      stringToByte = stringToByte & chrB(AscB(tempChar))
     Next
  End Function
  Private Function byteToString(toConv)
    For i = 1 to LenB(toConv)
      byteToString = byteToString & Chr(AscB(MidB(toConv,i,1))) 
    Next
  End Function
%>

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