Correct use of Unicode in RegExp

Discussion in 'Perl Misc' started by mike blamires, Apr 23, 2004.

  1. On Thu, 22 Apr 2004 22:36:44 +0100, mike blamires scribbled furiously:

    > I am having great difficulty using Unicode characters in a Regular
    > Expression, I am trying to match extended Unicode characters.
    >
    > I am wishing to split a large Dumpfile (containing only JPEGS) I have used
    > a hex editor to manually extract a file just to show it can be done, so I
    > know the input is intact.
    >
    > Each JPEG starts with the Unicode characters \u00FF \u00D8 \u00FF \u00E1
    > and there are plenty of these to be found within the file.
    >
    > open(DUMPFILE, "/pathtodumpfile");
    > my $line;
    > while(<DUMPFILE>) {
    > $line = $line.$_;
    > }
    > @files = split(/\x{00FF}\x{00D8}\x{00FF}\x{00E1}/, $line);
    >
    > (As you may see from the above style I am relatively inexperienced to the
    > perl side of programming ;)
    >
    > I have tried inserting the Unicode characters in various ways \xFF, \x{FF}
    > etc. It just doesn't seem to find the pattern. I am at a bit of a loss as
    > to whether it is my regexp that is wrong, my use of Unicode characters
    > or use of Extended Unicode characters.
    >
    > many thanks for your help.
    >
    > cheers
    > Mike


    Apologies, incorrect newsgroup first time round. Please see above.
    cheers
    Mike
    mike blamires, Apr 23, 2004
    #1
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