The ascii characters '1004' are not a "bitstring". They are the hex representation of an integer.

Try this:

#! perl -slw
use strict;

use constant FLAGS => {
    FLAG_DELETED     => 0x0001,
    FLAG_DRAFT       => 0x0002,
    FLAG_SEEN        => 0x0004,
    FLAG_RECENT      => 0x0008,
    FLAG_FLAGGED     => 0x0010,
    FLAG_ANSWERED    => 0x0020,
    FLAG_SAVED       => 0x0040,
    FLAG_MDNSENT     => 0x0080,
    FLAG_STTPENDING  => 0x0100,
    FLAG_FAVOURITE   => 0x0200,
    FLAG_NOTIFY      => 0x0400,
    FLAG_STTPRESENT  => 0x0800,
    FLAG_STTCOMPLETE => 0x1000,
};

my( $text, $int ) = split '\.', <DATA>;
chomp $int;
$int = hex $int;

printf "Flag '%s' (%u) %s set\n",
    $_, FLAGS->{ $_ },
    $int & FLAGS->{ $_ } ? 'is' : 'is not'
    for keys %{ FLAGS() };

__DATA__
mymessage.1004

[download]

Outputs:

C:\test>1030559.pl
Flag 'FLAG_RECENT' (8) is not set
Flag 'FLAG_STTPRESENT' (2048) is not set
Flag 'FLAG_STTPENDING' (256) is not set
Flag 'FLAG_FAVOURITE' (512) is not set
Flag 'FLAG_DELETED' (1) is not set
Flag 'FLAG_NOTIFY' (1024) is not set
Flag 'FLAG_DRAFT' (2) is not set
Flag 'FLAG_FLAGGED' (16) is not set
Flag 'FLAG_SEEN' (4) is set
Flag 'FLAG_SAVED' (64) is not set
Flag 'FLAG_ANSWERED' (32) is not set
Flag 'FLAG_STTCOMPLETE' (4096) is set
Flag 'FLAG_MDNSENT' (128) is not set

[download]
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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re: How do I test if a bit has been set in a bitstring by BrowserUk
in thread How do I test if a bit has been set in a bitstring by willk1980

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