Make a personal search engine (source code)

Search Engine <%
Response.buffer=true

'
' OneFile Search Engine (Ofsearch v1.0)
' Copyright sixto Luis Santos <sixtos@prtc.net>
' All Rights Reserved
'
' Note:
' This is freeware. This isn't in the public Domain.
' You can freely the your own site.
'
' You cannot re-distribute the code, by any means,
' Without the express written authorization by the author.
'
' Use this program at your own risk.
'


' Globals--------------------------------------
' ----------------------------------------------

Const validfiles = "Htmltxt"
Const rootfld = "./"

Dim matched
Dim Regex
Dim GetTitle
Dim FS
Dim Rflen
Dim RootFolder
Dim Doccount
Dim Docmatchcount
Dim Matchedcount

' ----------------------------------------------
' Procedure:searchfiles ()
' ----------------------------------------------
Public Sub searchfiles (FolderPath)
Dim Fsfolder
Dim FsFolder2
Dim Fsfile
Dim Fstext
Dim Filetext
Dim Filetitle
Dim Filetitlematch
Dim MatchCount
Dim Outputline

' Get the Starting folder
Set Fsfolder = fs. GetFolder (FolderPath)
' Iterate thru every file in the folder
For each fsfile in Fsfolder.files
' Compare the current file extension with the list of valid target files
If InStr (1, Validfiles, right (Fsfile.name, 3), vbTextCompare) > 0 Then
Doccount = Doccount + 1
' Open ' file to read its content
Set Fstext = Fsfile.openastextstream
Filetext = Fstext.readall
' Apply ' the regex search and get the count of matches found
MatchCount = Regex.execute (Filetext). Count
Matchedcount = Matchedcount + matchcount
If matchcount > 0 Then
Docmatchcount = Docmatchcount + 1
' Apply another regex to get ' the HTML document ' s title
Set Filetitlematch = Gettitle.execute (Filetext)
If filetitlematch.count > 0 Then
' Strip the title tags
Filetitle = Trim (replace (filetitlematch.item (0), 8), "</title>", "", 1,1,1))
' In-case ', the title is empty
If filetitle = "" Then
Filetitle = "No Title" ("& Fsfile.name &") "
End If
Else
' Create an alternate entry name (if no title found)
Filetitle = "No Title" ("& Fsfile.name &") "
End If
' Create the entry line with proper formatting
' Add the entry number
Outputline = "<b>" & Docmatchcount & ".</b>"
' Add the document name and link
Outputline = outputline & "<a href=" & Chr (+) & rootfld & Replace (Mid Fsfile.path,
Rflen), "\", "/" & Chr & "><B>"
Outputline = outputline & filetitle & "</B></a>"
' Add The Document information
Outputline = outputline & "<font size=1><br> Criteria matched" & MatchCount
& "Times-size:"
Outputline = outputline & FormatNumber (fsfile.size/1024,2, -1,0,-1) & "K bytes"
Outputline = Outputline & "-Last Modified:" & FormatDateTime
(fsfile.datelastmodified,vbshortdate) & "</Font><br>"
' Display entry
Response.Write Outputline
Response.Flush
End If
Fstext.close
End If
Next

' Iterate thru each subfolder and recursively call this procedure
For each fsFolder2 in Fsfolder.subfolders
Searchfiles Fsfolder2.path
Next

Set Filetitlematch = Nothing
Set Fstext = Nothing
Set Fsfile = Nothing
Set FsFolder2 = Nothing
Set Fsfolder = Nothing
End Sub

' ----------------------------------------------
' Procedure:search ()
' ----------------------------------------------
Sub Search (