1 Class cBuffer
2Private objFSO, objFile, objDict
3Private m_strPathToFile, m_TableBGColor, m_StartTime
4Private m_EndTime, m_LineCount, m_intKeyMin, m_intKeyMax
5Private m_CodeColor, m_CommentColor, m_StringColor, m_TabSpaces
6
7Private Sub Class_Initialize()
8TableBGColor = "white"
9CodeColor = "Blue"
10CommentColor = "Green"
11StringColor = "Gray"
12TabSpaces = " "
13PathToFile = ""
14
15m_StartTime = 0
16m_EndTime = 0
17m_LineCount = 0
18
19KeyMin = 2
20KeyMax = 8
21
22Set objDict = server.CreateObject("Scripting.Dictionary")
23objDict.CompareMode = 1
24
25CreateKeywords
26
27Set objFSO = server.CreateObject("Scripting.FileSystemObject")
28End Sub
29
30Private Sub Class_Terminate()
31Set objDict = Nothing
32Set objFSO = Nothing
33End Sub
34
35
36Public Property Let CodeColor(inColor)
37m_CodeColor = "
<font color=" & inColor & "><strong>"
End Property
Private Property Get CodeColor()
CodeColor = m_CodeColor
End Property
Public Property Let CommentColor(inColor)
m_CommentColor = "<font color=" & inColor & ">"
End Property
Private Property Get CommentColor()
CommentColor = m_CommentColor
End Property
Public Property Let StringColor(inColor)
m_StringColor = "<font color=" & inColor & ">"
End Property
Private Property Get StringColor()
StringColor = m_StringColor
End Property
Public Property Let TabSpaces(inSpaces)
m_TabSpaces = inSpaces
End Property
Private Property Get TabSpaces()
TabSpaces = m_TabSpaces
End Property
Public Property Let TableBGColor(inColor)
m_TableBGColor = inColor
End Property
Private Property Get TableBGColor()
TableBGColor = m_TableBGColor
End Property
Public Property Get ProcessingTime()
ProcessingTime = Second(m_EndTime - m_StartTime)
End Property
Public Property Get LineCount()
LineCount = m_LineCount
End Property
Public Property Get PathToFile()
PathToFile = m_strPathToFile
End Property
Public Property Let PathToFile(inPath)
m_strPathToFile = inPath
End Property
Private Property Let KeyMin(inMin)
m_intKeyMin = inMin
End Property
Private Property Get KeyMin()
KeyMin = m_intKeyMin
End Property
Private Property Let KeyMax(inMax)
m_intKeyMax = inMax
End Property
Private Property Get KeyMax()
KeyMax = m_intKeyMax
End Property
Private Sub CreateKeywords()
objDict.Add "abs", "Abs"
objDict.Add "and", "And"
objDict.Add "array", "Array"
objDict.Add "call", "Call"
objDict.Add "cbool", "CBool"
objDict.Add "cbyte", "CByte"
objDict.Add "ccur", "CCur"
objDict.Add "cdate", "CDate"
objDict.Add "cdbl", "CDbl"
objDict.Add "cint", "CInt"
objDict.Add "class", "Class"
objDict.Add "clng", "CLng"
objDict.Add "const", "Const"
objDict.Add "csng", "CSng"
objDict.Add "cstr", "CStr"
objDict.Add "date", "Date"
objDict.Add "dim", "Dim"
objDict.Add "do", "Do"
objDict.Add "loop", "Loop"
objDict.Add "empty", "Empty"
objDict.Add "eqv", "Eqv"
objDict.Add "erase", "Erase"
objDict.Add "exit", "Exit"
objDict.Add "false", "False"
objDict.Add "fix", "Fix"
objDict.Add "for", "For"
objDict.Add "next", "Next"
objDict.Add "each", "Each"
objDict.Add "function", "Function"
objDict.Add "global", "Global"
objDict.Add "if", "If"
objDict.Add "then", "Then"
objDict.Add "else", "Else"
objDict.Add "elseif", "ElseIf"
objDict.Add "imp", "Imp"
objDict.Add "int", "Int"
objDict.Add "is", "Is"
objDict.Add "lbound", "LBound"
objDict.Add "len", "Len"
objDict.Add "mod", "Mod"
objDict.Add "new", "New"
objDict.Add "not", "Not"
objDict.Add "nothing", "Nothing"
objDict.Add "null", "Null"
objDict.Add "on", "On"
objDict.Add "error", "Error"
objDict.Add "resume", "Resume"
objDict.Add "option", "Option"
objDict.Add "explicit", "Explicit"
objDict.Add "or", "Or"
objDict.Add "private", "Private"
objDict.Add "property", "Property"
objDict.Add "get", "Get"
objDict.Add "let", "Let"
objDict.Add "set", "Set"
objDict.Add "public", "Public"
objDict.Add "redim", "Redim"
objDict.Add "select", "Select"
objDict.Add "case", "Case"
objDict.Add "end", "End"
objDict.Add "sgn", "Sgn"
objDict.Add "string", "String"
objDict.Add "sub", "Sub"
objDict.Add "true", "True"
objDict.Add "ubound", "UBound"
objDict.Add "while", "While"
objDict.Add "wend", "Wend"
objDict.Add "with", "With"
objDict.Add "xor", "Xor"
End Sub
Private Function Min(x, y)
Dim tempMin
If x < y Then tempMin = x Else tempMin = y
Min = tempMin
End Function
Private Function Max(x, y)
Dim tempMax
If x > y Then tempMax = x Else tempMax = y
Max = tempMax
End Function
Public Sub AddKeyword(inKeyword, inToken)
KeyMin = Min(Len(inKeyword), KeyMin)
KeyMax = Max(Len(inKeyword), KeyMax)
objDict.Add LCase(inKeyword), inToken
End Sub
Public Sub ParseFile(blnOutputHTML)
Dim m_strReadLine, tempString, blnInScriptBlock, blnGoodExtension, i
Dim blnEmptyLine
m_LineCount = 0
If Len(PathToFile) = 0 Then
Err.Raise 5, "cBuffer: PathToFile Length Zero"
Exit Sub
End If
Select Case LCase(Right(PathToFile, 3))
Case "asp", "inc"
blnGoodExtension = True
Case Else
blnGoodExtension = False
End Select
If Not blnGoodExtension Then
Err.Raise 5, "cBuffer: File extension not asp or inc"
Exit Sub
End If
Set objFile = objFSO.OpenTextFile(server.MapPath(PathToFile))
Response.Write "<table bgcolor=" & TableBGColor & " cellpadding="0" cellspacing="0" nowrap="">"
Response.Write "<tr><td><pre>"
m_StartTime = Time()
Do While Not objFile.AtEndOfStream
m_strReadLine = objFile.ReadLine
blnEmptyLine = False
If Len(m_strReadLine) = 0 Then
blnEmptyLine = True
End If
m_strReadLine = Replace(m_strReadLine, vbTab, TabSpaces)
m_LineCount = m_LineCount + 1
tempString = LTrim(m_strReadLine)
' Check for the top script line that set's the default script language
' for the page.
If left( tempString, 3 ) = Chr(60) & "%@" And right(tempString, 2) = "%" & Chr(62) Then
Response.Write "<table><tr bgcolor="yellow"><td>"
Response.Write server.HTMLEncode(m_strReadLine)
Response.Write "</td></tr></table>"
blnInScriptBlock = False
' Check for an opening script tag
ElseIf Left( tempString, 2) = Chr(60) & "%" Then
' Check for a closing script tag on the same line
If right( RTrim(tempString), 2 ) = "%" & Chr(62) Then
Response.Write "<table><tr><td bgcolor="yellow"><%</td>"
Response.Write "<td>"
Response.Write CharacterParse(mid(m_strReadLine, 3, Len(m_strReadLine) - 4))
Response.Write "</td>"
Response.Write "<td bgcolor="yellow">
1blnInScriptBlock = False
2Else
3Response.Write "<table><tr bgcolor="yellow"><td>```
4</td></tr></table>"
5' We've got an opening script tag so set the flag to true so
6' that we know to start parsing the lines for keywords/comments
7blnInScriptBlock = True
8End If
9Else
10If blnInScriptBlock Then
11If blnEmptyLine Then
12Response.Write vbCrLf
13Else
14If right(tempString, 2) = "%" &amp; Chr(62) Then
15Response.Write "<table><tr bgcolor="yellow"><td>
16```</td></tr></table>"
17blnInScriptBlock = False
18Else
19Response.Write CharacterParse(m_strReadLine) & vbCrLf
20End If
21End If
22Else
23If blnOutputHTML Then
24If blnEmptyLine Then
25Response.Write vbCrLf
26Else
27Response.Write server.HTMLEncode(m_strReadLine) & vbCrLf
28End If
29End If
30End If
31End If
32Loop
33
34' Grab the time at the completion of processing
35m_EndTime = Time()
36
37' Close the outside table
38Response.Write "</pre></td></tr></table>"
39
40' Close the file and destroy the file object
41objFile.close
42Set objFile = Nothing
43End Sub
44
45' This function parses a line character by character
46Private Function CharacterParse(inLine)
47Dim charBuffer, tempChar, i, outputString
48Dim insideString, workString, holdChar
49
50insideString = False
51outputString = ""
52
53For i = 1 to Len(inLine)
54tempChar = mid(inLine, i, 1)
55Select Case tempChar
56Case " "
57If Not insideString Then
58charBuffer = charBuffer & " "
59If charBuffer <>" " Then
60If left(charBuffer, 1) = " " Then outputString = outputString & " "
61
62' Check for a 'rem' style comment marker
63If LCase(Trim(charBuffer)) = "rem" Then
64outputString = outputString & CommentColor
65outputString = outputString & "REM"
66workString = mid( inLine, i, Len(inLine))
67workString = replace(workString, "<", "<")
68workString = replace(workString, ">", ">")
69outputString = outputString & workString & "</font>"
70charBuffer = ""
71Exit For
72End If
73
74outputString = outputString & FindReplace(Trim(charBuffer))
75If right(charBuffer, 1) = " " Then outputString = outputString & " "
76charBuffer = ""
77End If
78Else
79outputString = outputString & " "
80End If
81Case "("
82If left(charBuffer, 1) = " " Then
83outputString = outputString & " "
84End If
85outputString = outputString & FindReplace(Trim(charBuffer)) & "("
86charBuffer = ""
87Case Chr(60)
88outputString = outputString & "<"
89Case Chr(62)
90outputString = outputString & ">"
91Case Chr(34)
92' catch quote chars and flip a boolean variable to denote that
93' whether or not we're "inside" a quoted string
94insideString = Not insideString
95If insideString Then
96outputString = outputString & StringColor
97outputString = outputString & """
98Else
99outputString = outputString & """"
100outputString = outputString & "</font>"
101End If
102Case "'"
103' Catch comments and output the rest of the line
104' as a comment IF we're not inside a string.
105If Not insideString Then
106outputString = outputString & CommentColor
107workString = mid( inLine, i, Len(inLine))
108workString = replace(workString, "<", "<")
109workString = replace(workString, ">", ">")
110outputString = outputString & workString
111outputString = outputString & "</strong></font>
"
Exit For
Else
outputString = outputString & "'"
End If
Case Else
' We've dealt with special case characters so now
' we'll begin adding characters to our outputString
' or charBuffer depending on the state of the insideString
' boolean variable
If insideString Then
outputString = outputString & tempChar
Else
charBuffer = charBuffer & tempChar
End If
End Select
Next
' Deal with the last part of the string in the character buffer
If Left(charBuffer, 1) = " " Then
outputString = outputString & " "
End If
' Check for closing parentheses at the end of a string
If right(charBuffer, 1) = ")" Then
charBuffer = Left(charBuffer, Len(charBuffer) - 1)
CharacterParse = outputString & FindReplace(Trim(charBuffer)) & ")"
Exit Function
End If
CharacterParse = outputString & FindReplace(Trim(charBuffer))
End Function
' return true or false if a passed in number is between KeyMin and KeyMax
Private Function InRange(inLen)
If inLen >= KeyMin And inLen <= KeyMax Then
InRange = True
Exit Function
End If
InRange = False
End Function
' Evaluate the passed in string and see if it's a keyword in the
' dictionary. If it is we will add html formatting to the string
' and return it to the caller. Otherwise just return the same
' string as was passed in.
Private Function FindReplace(inToken)
' Check the length to make sure it's within the range of KeyMin and KeyMax
If InRange(Len(inToken)) Then
If objDict.Exists(inToken) Then
FindReplace = CodeColor & objDict.Item(inToken) & "
"
Exit Function
End If
End If
' Keyword is either too short or too long or doesn't exist in the
' dictionary so we'll just return what was passed in to the function
FindReplace = inToken
End Function
End Class
%>
1 ' *************************************************************************
2' This is all test/example code showing the calling syntax of the
3' cBuffer class ... the interface to the cBuffer object is quite simple.
4'
5' Use it for reference ... delete it ... whatever.
6' *************************************************************************
7
8REM This is a rem type comment just for testing purposes!
9
10' This variable will hold an instance of the cBuffer class
11Dim objBuffer
12
13' Set up the error handling
14On Error Resume Next
15
16' create the instance of the cBuffer class
17Set objBuffer = New cBuffer
18
19' Set the PathToFile property of the cBuffer class
20'
21' Just for kicks we'll use the asp file that we created
22' in the last installment of this article series for testing purposes
23objBuffer.PathToFile = "t.asp" '这是文件名啦。
24
25' Here's an example of how to add a new keyword to the keyword array
26' You could add a list of your own function names, variables or whatever...cool!
27' NOTE: You can add different HTML formatting if you like, the
<strong>
' attribute will applied to all keywords ... this is likely to change
' in the near future.
'
objBuffer.AddKeyword "response.write", "<font color="Red">Response.Write</font>"
' Here are examples of changing the table background color, code color,
' comment color, string color and tab space properties
'
'objBuffer.TableBGColor = "LightGrey" ' or
'objBuffer.TableBGColor = "#ffffdd" ' simple right?
objBuffer.CodeColor = "Blue"
'objBuffer.CommentColor = "Orange"
objBuffer.StringColor = "Purple"
'objBuffer.TabSpaces = " "
' Call the ParseFile method of the cBuffer class, pass it true if you want the
' HTML contained in the page output or false if you don't
objBuffer.ParseFile False '注意：显示代码的response.write已经在class中。这里调用方法就可以了。
' Check for errors that may have been raised and write them out
If Err.number <> 0 Then
Response.Write Err.number & ":" & Err.description & ":" & Err.source & "<br/>"
End If
' Output the processing time and number of lines processed by the script
Response.Write "<strong>Processing Time:</strong> " & objBuffer.ProcessingTime & " seconds<br/>"
Response.Write "<strong>Lines Processed:</strong> " & objBuffer.LineCount & "<br/>"
' Destroy the instance of our cBuffer class
Set objBuffer = Nothing