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| <% '******************************************************************************
' ********************** DO NOT DELETE ****************************************
'
' COPYRIGHT NOTICE: Copyright 1999 Jon M. Gohr, NetTech Development Inc.
'
' This code is free for non-commercial use. Any commercial usage or
' duplication requires a licensing agreement from the author who may be
' contacted at the following email address: jongohr@yahoo.com
'
' The author assumes no responsibility for any damage caused by the
' proper or inproper use of this code.
'
' ********************** DO NOT DELETE ****************************************
'******************************************************************************
%>
<% Class cBuffer
Private m_objFSO, m_objFile, m_objDict
Private m_strPathToFile, m_TableBGColor, m_StartTime
Private m_EndTime, m_LineCount, m_intKeyMin, m_intKeyMax
Private m_CodeColor, m_CommentColor, m_StringColor, m_TabSpaces
'**************************************************************************
' BEGIN EVENT HANDLERS
'**************************************************************************
Private Sub Class_Initialize()
' Set the intial table background color
TableBGColor = "silver"
' Set the intial color for the code keywords
CodeColor = "Blue"
' Set the intial color for comments
CommentColor = "Green"
' Set the intial color for quoted strings
StringColor = "Borwn"
' Set the number of spaces we will use to replace tab characters
TabSpaces = " "
' Set the File Path to an empty string
PathToFile = ""
' Zero these out, hopefully their use is obvious?
m_StartTime = 0
m_EndTime = 0
m_LineCount = 0
' 2 is the size of the smallest known keyword
KeyMin = 2
' 8 is the size of the largest known keyword
KeyMax = 8
' Create an instance of the dictionary object
Set m_objDict = server.CreateObject("Scripting.Dictionary")
' Set the dictionary object compare mode to text
m_objDict.CompareMode = 1
CreateKeywords
' Create an instance of the FileSystemObject
Set m_objFSO = server.CreateObject("Scripting.FileSystemObject")
End Sub
Private Sub Class_Terminate()
' Destroy the objects created in the intialize event
Set m_objDict = Nothing
Set m_objFSO = Nothing
End Sub
'**************************************************************************
' END EVENT HANDLERS
'**************************************************************************
'**************************************************************************
' BEGIN PROPERTIES
'**************************************************************************
' PROPERTIES WITH SOME PUBLIC EXPOSURE ************************************
Public Property Let CodeColor(inColor)
m_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 PROPERTIES ******************************************************
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
'**************************************************************************
' END PROPERTIES
'**************************************************************************
'**************************************************************************
' BEGIN METHODS
'**************************************************************************
' subroutine to add all of the known language keywords to the dictionary
Private Sub CreateKeywords()
m_objDict.Add "abs", "Abs"
m_objDict.Add "and", "And"
m_objDict.Add "array", "Array"
m_objDict.Add "call", "Call"
m_objDict.Add "case", "Case"
m_objDict.Add "cbool", "CBool"
m_objDict.Add "cbyte", "CByte"
m_objDict.Add "ccur", "CCur"
m_objDict.Add "cdate", "CDate"
m_objDict.Add "cdbl", "CDbl"
m_objDict.Add "cint", "CInt"
m_objDict.Add "class", "Class"
m_objDict.Add "clng", "CLng"
m_objDict.Add "const", "Const"
m_objDict.Add "csng", "CSng"
m_objDict.Add "cstr", "CStr"
m_objDict.Add "date", "Date"
m_objDict.Add "dim", "Dim"
m_objDict.Add "do", "Do"
m_objDict.Add "each", "Each"
m_objDict.Add "else", "Else"
m_objDict.Add "elseif", "ElseIf"
m_objDict.Add "empty", "Empty"
m_objDict.Add "end", "End"
m_objDict.Add "eqv", "Eqv"
m_objDict.Add "erase", "Erase"
m_objDict.Add "error", "Error"
m_objDict.Add "exit", "Exit"
m_objDict.Add "explicit", "Explicit"
m_objDict.Add "false", "False"
m_objDict.Add "fix", "Fix"
m_objDict.Add "for", "For"
m_objDict.Add "function", "Function"
m_objDict.Add "get", "Get"
m_objDict.Add "global", "Global"
m_objDict.Add "if", "If"
m_objDict.Add "imp", "Imp"
m_objDict.Add "int", "Int"
m_objDict.Add "is", "Is"
m_objDict.Add "lbound", "LBound"
m_objDict.Add "len", "Len"
m_objDict.Add "let", "Let"
m_objDict.Add "loop", "Loop"
m_objDict.Add "mod", "Mod"
m_objDict.Add "new", "New"
m_objDict.Add "next", "Next"
m_objDict.Add "not", "Not"
m_objDict.Add "nothing", "Nothing"
m_objDict.Add "null", "Null"
m_objDict.Add "on", "On"
m_objDict.Add "option", "Option"
m_objDict.Add "or", "Or"
m_objDict.Add "private", "Private"
m_objDict.Add "property", "Property"
m_objDict.Add "public", "Public"
m_objDict.Add "redim", "Redim"
m_objDict.Add "resume", "Resume"
m_objDict.Add "select", "Select"
m_objDict.Add "set", "Set"
m_objDict.Add "sgn", "Sgn"
m_objDict.Add "string", "String"
m_objDict.Add "sub", "Sub"
m_objDict.Add "then", "Then"
m_objDict.Add "true", "True"
m_objDict.Add "ubound", "UBound"
m_objDict.Add "wend", "Wend"
m_objDict.Add "while", "While"
m_objDict.Add "with", "With"
m_objDict.Add "xor", "Xor"
End Sub
' Simple function to return the smaller of two numbers
Private Function Min(x, y)
Dim tempMin
If x < y Then tempMin = x Else tempMin = y
Min = tempMin
End Function
' simple function to return the larger of two numbers
Private Function Max(x, y)
Dim tempMax
If x > y Then tempMax = x Else tempMax = y
Max = tempMax
End Function
' Public method to add keywords to the dictionary object
Public Sub AddKeyword(inKeyword, inToken)
KeyMin = Min(Len(inKeyword), KeyMin)
KeyMax = Max(Len(inKeyword), KeyMax)
m_objDict.Add LCase(inKeyword), inToken
End Sub
' This is the primary method of the class.
Public Sub ParseFile(blnOutputHTML)
Dim m_strReadLine, tempString, blnInScriptBlock, blnGoodExtension, i
Dim blnEmptyLine
' zero out the line count
m_LineCount = 0
' Check the length of the PathToFile property.
If Len(PathToFile) = 0 Then
Err.Raise 5, "cBuffer: PathToFile Length Zero"
Exit Sub
End If
' Check the file extension
Select Case LCase(Right(PathToFile, 3))
Case "asp", "inc", "html", "asa", "htm"
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
' Open the file
Set m_objFile = m_objFSO.OpenTextFile(server.MapPath(PathToFile))
' Start the outside table which will contain all the output
Response.Write "<table nowrap bgcolor=" & TableBGColor & " cellpadding=0 cellspacing=0>"
Response.Write "<tr><td><PRE>"
' Grab the time at the start of processing
m_StartTime = Time()
' loop and read the file a line at a time
Do While Not m_objFile.AtEndOfStream
m_strReadLine = m_objFile.ReadLine
' Because of the line conversion we do below we need to catch blank lines up here right away.
blnEmptyLine = False
If Len(m_strReadLine) = 0 Then
blnEmptyLine = True
End If
' Replace all the tab characters with spaces
m_strReadLine = Replace(m_strReadLine, vbTab, TabSpaces)
' Increment the line count
m_LineCount = m_LineCount + 1
' Trim all the spaces from the left side of the line
' so we can start doing evaluation of the content of the line
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>%></td></tr></table>"
blnInScriptBlock = False
Else
Response.Write "<table><tr bgcolor=yellow><td><%</td></tr></table>"
' We've got an opening script tag so set the flag to true so
' that we know to start parsing the lines for keywords/comments
blnInScriptBlock = True
End If
Else
If blnInScriptBlock Then
If blnEmptyLine Then
Response.Write vbCrLf
Else
If right(tempString, 2) = "%" & Chr(62) Then
Response.Write "<table><tr bgcolor=yellow><td>%></td></tr></table>"
blnInScriptBlock = False
Else
if instr(lcase(m_strReadLine), "class ") > 0 then
Response.Write CharacterParse(m_strReadLine) & vbCrLf
elseif instr(lcase(m_strReadLine), "sub ") > 0 then
Response.Write CharacterParse(m_strReadLine) & vbCrLf
elseif instr(lcase(m_strReadLine), "function ") > 0 then
Response.Write CharacterParse(m_strReadLine) & vbCrLf
elseif instr(lcase(m_strReadLine), "property ") > 0 then
Response.Write CharacterParse(m_strReadLine) & vbCrLf
end if
End If
End If
Else
If blnOutputHTML Then
If blnEmptyLine Then
Response.Write vbCrLf
Else
Response.Write server.HTMLEncode(m_strReadLine) & vbCrLf
End If
End If
End If
End If
Loop
' Grab the time at the completion of processing
m_EndTime = Time()
' Close the outside table
Response.Write "</PRE></td></tr></table>"
' Close the file and destroy the file object
m_objFile.close
Set m_objFile = Nothing
End Sub
' This function parses a line character by character
Private Function CharacterParse(inLine)
Dim charBuffer, tempChar, i, outputString
Dim insideString, workString, holdChar
insideString = False
outputString = ""
For i = 1 to Len(inLine)
tempChar = mid(inLine, i, 1)
Select Case tempChar
Case " "
If Not insideString Then
charBuffer = charBuffer & " "
If charBuffer <>" " Then
If left(charBuffer, 1) = " " Then outputString = outputString & " "
' Check for a 'rem' style comment marker
If LCase(Trim(charBuffer)) = "rem" Then
outputString = outputString & CommentColor
outputString = outputString & "REM"
workString = mid( inLine, i, Len(inLine))
workString = replace(workString, "<", "<")
workString = replace(workString, ">", ">")
outputString = outputString & workString & "</font>"
charBuffer = ""
Exit For
End If
outputString = outputString & FindReplace(Trim(charBuffer))
If right(charBuffer, 1) = " " Then outputString = outputString & " "
charBuffer = ""
End If
Else
outputString = outputString & " "
End If
Case "("
If left(charBuffer, 1) = " " Then
outputString = outputString & " "
End If
outputString = outputString & FindReplace(Trim(charBuffer)) & "("
charBuffer = ""
Case Chr(60)
outputString = outputString & "<"
Case Chr(62)
outputString = outputString & ">"
Case Chr(34)
' catch quote chars and flip a boolean variable to denote that
' whether or not we're "inside" a quoted string
insideString = Not insideString
If insideString Then
outputString = outputString & StringColor
outputString = outputString & """"
Else
outputString = outputString & """"
outputString = outputString & "</font>"
End If
Case "'"
' Catch comments and output the rest of the line
' as a comment IF we're not inside a string.
If Not insideString Then
outputString = outputString & CommentColor
workString = mid( inLine, i, Len(inLine))
workString = replace(workString, "<", "<")
workString = replace(workString, ">", ">")
outputString = outputString & workString
outputString = outputString & "</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 m_objDict.Exists(inToken) Then
FindReplace = CodeColor & m_objDict.Item(inToken) & "</Strong></Font>"
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 METHODS
'**************************************************************************
End Class
%> |
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