Hi Chip
The third flavour of text files is UTF8 which seems to be a kind of
hybrid between Unicode and ANSI. It seems to use one byte for ANSI
characters (value of aSCII 255 or less) and two bytes for Unicode
characters with higher values. The first two bytes of UTF8 files are hex
FFFE.
Kind regards
Christo
On 2011/10/28 1:17 PM, Chip Orange wrote:
David,
there's a third variation of encoding, whose name escapes me at the
moment (although it may be ANSI), but is read with the "unicode" option.
That's why I only test for the first character being "ff" in my example,
as it covers both variations that way.
Chip
------------------------------------------------------------------------
*From:* David [mailto:[email protected]]
*Sent:* Friday, October 28, 2011 12:03 AM
*To:* [email protected]
*Subject:* Re: How to detect textfile format?
Thanks Jeff.
It somehow got up working now. But I had a bit of a hard time, as it
does differ a bit from your code. See, your code states, that the
Hex-number should be FFFE. But on my system, if I want to get it
working, I have to test for a HEX-number of FF0.
Puzzled why, but that is the way it is. Wonder if my script then will
work on other computers, since there could be the difference in the
testing number. Anyone could shed some light on that one?
----- Original Message -----
*From:* Jeff Weiss <mailto:[email protected]>
*To:* [email protected] <mailto:[email protected]>
*Sent:* Friday, October 28, 2011 4:53 AM
*Subject:* Re: How to detect textfile format?
Here are some lines from one of my apps which should do what you need:
Const ForReading = 1
Dim FSO : Set FSO = CreateObject("Scripting.FileSystemObject")
On Error Resume Next
' determine whether the file is Unicode or not.
Dim ObjScriptFile : Set objScriptFile = FSO.OpenTextFile(Path &
nString & ".vbs")
Dim firstByte, secondByte
firstByte = Hex(AscB(MidB(objScriptFile.Read(1), 1, 1)))
secondByte = Hex(AscB(MidB(objScriptFile.Read(1), 1, 1)))
If Err.Number > 0 Then
Mess =Mess & " " & "Error " & Err.Number & " " & Err.Description &
VbCrLf
If Err.Number = 424 Then
Mess = Mess & "File not Found! "
End If
On Error goto 0
Exit Function
End If
If firstByte & secondByte = "FFFE" Then
' unicode file
strContents = SOFileToString(Path & nString & ".vbs", "Unicode")
Else
' not unicode
strContents = SOFileToString(Path & nString & ".vbs", "")
End If
objScriptFile.Close
hth
Jeff Weiss
----- Original Message -----
*From:* David <mailto:[email protected]>
*To:* [email protected] <mailto:[email protected]>
*Sent:* Thursday, October 27, 2011 9:36 PM
*Subject:* How to detect textfile format?
In my script, I want to read the information from a text file.
As it is going to read from any text file on the disk, I have no
clue whether the actual text file will be an ASCII, or an
Unicode file. I am using the CreateTextFile method to open the
text file. This method does require me to determine if I am
going to open one or the other of the file formats. Is there any
good work around for this in VBS? Some way for me to open a text
file, and have it properly read, no matter which of the two
formats it has been saved in?
From my testing here, I get the following results. Try to open
an ASCII file, having CreateTextFile set to UniCode, only gives
me one line, and no recognized text.
Try to open an UniCode file, having CreateTextFile set to ASCII,
will recognize all the lines, but does not work properly when I
try to perform textual operations; like Mid, and InStr.
Yep, even computers have their multi-lingual challenges. Smile.
Anyone has a good idea here, I would be thankful.
