VBScript String Conversion

Try this, it is in VB using Scripting Runtime but should easily convert to VB script.

Const ForReading = 1, ForWriting = 2, ForAppending = 8
Dim fso As FileSystemObject, f As File
Dim tsWord As TextStream
Dim tsRead As TextStream
Dim aryWord() As Byte

Private Sub Command1_Click()
  Set fso = CreateObject("Scripting.FileSystemObject")
  fso.CreateTextFile "c:\testbed\testnew.doc", True, False
  Set f = fso.GetFile("c:\testbed\testnew.doc")
  Set tsWord = f.OpenAsTextStream(ForWriting, TristateFalse)
  Set tsRead = fso.OpenTextFile("c:\testbed\test.doc", ForReading, True, TristateFalse)
  Do
    tsWord.Write tsRead.Read(1)
  Loop Until tsRead.AtEndOfStream
  tsWord.Close
  tsRead.Close
  Set f = Nothing
  Set fso = Nothing
End Sub

I have tried it with some word documents and it creates a perfectly openable copy of the document.

I obviously haven't saved the textstream to a database in the meantime but as you have that figured you should be able to use this code to solve your problem.

Hello,

Some notes about Unicode...
Each symbol presented as two bytes. For common fonts first byte is 0 and second is ascii code of symbol. So for common fonts you can just skip zeros.

The problem starts when you receive 'really' unicode symbol... Convert two bytes to long, and if value is less than zero you just need to add 4096 to get appropriate ascii symbol.

So, final solution (or your function StrConv) could be following:

A = B1*256 + B2
If A<0 then
 A=A + 4096
end if

Now A consist of ascii code of symbol.

Sincerely yours,

Crin

PS. English is not my native language, so please ask for more explanations if needed.

Nick, you can set the number of characters read in each call to a higher figure <= 999999999 in fact so that you don't have to do it char by char. I have also tried it by reading the entire file into the aryWord array and then writing the contents back and it seems to work fine!

Private Sub Command1_Click()
  Set fso = CreateObject("Scripting.FileSystemObject")
  fso.CreateTextFile "c:\testbed\testnew.doc", True, False
  Set f = fso.GetFile("c:\testbed\testnew.doc")
  Set tsWord = f.OpenAsTextStream(ForWriting, TristateFalse)
  Set tsRead = fso.OpenTextFile("c:\testbed\test.doc", ForReading, True, TristateFalse)
  Do
    aryWord = tsRead.Read(9999999)
    tsWord.Write aryWord
  Loop Until tsRead.AtEndOfStream
  tsWord.Close
  tsRead.Close
  Set f = Nothing
  Set fso = Nothing
End Sub

I thank you all for your comments, but I think I may not have clearly explained the point.  I know that by using TriStateFalse, I can get a solution that works, but the resulting byte array is twice as massive as if I were able to open the file with "Open <filename> for Binary as #number".  Thus, the blob inputted into the database takes up more room.  If I could use strconv in vbscript, it would be no problem.

Try this...open your documents using TriStateTrue, instead of TriStateFalse, or use the open statement.  YOu won't be able to write back the string to the file using the filesystemobject successfully, I believe.

Hello Nick,

I want to post a code for custom StrConv function (let us name it mStrConv) but I need a little example from VB that worked before using MS StrConv function.

Could you show it?

My previous message just provided the way you can create such function in VBScript.

Sincerely yours,

Crin

NickHeitx,
Try this site and see if it will help you. I stink at VBscript but anytime I need vbscript help, I get it from here:

http://www.vb-web-directory.com/vbscript/vbscript.shtml

-good luck

or this site (I like it bestest)


http://www.devguru.com/index.asp?page=/technologies/vbscript/quickref/vbscript_intro.html

THanks for the guidance to web pages.  Unfortunately, I haven't been able to find reference to anything concerning the reasons for dropping support for strconv in vbscript, nor what the alternatives are.  Thanks.

Crin : It is a bit difficult to post here.  If you give me an email address, I can send something to you.

Comment accepted as answer

I've solved the problem in a different way...use java.  Unfortunately, it just looked like the FileSystemObject was imperfect in its handling of ascii streams...if you come up with a manual way of converting ascii to unicode, drop me a line:
niheitz@hotmail.com