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Re: BIN to HEX

by Roger (Parson)
on Aug 22, 2006 at 07:01 UTC ( #568786=note: print w/replies, xml ) Need Help??


in reply to BIN to HEX

You could first open the file, then read the byte in from the file handle, then inspect the byte.

# open a file open MYFILE, '<myfile.bin' or die 'can not open file'; # read a byte my $byte; read MYFILE, $byte, 1; # do perldoc -f read to see full doco # check the byte if ($byte > 0x30) { print "Byte is greater than 0x30\n"; } else { print "Byte is less than or equal to 0x30\n"; } # close the file close MYFILE;

Replies are listed 'Best First'.
Re^2: BIN to HEX
by eyepopslikeamosquito (Chancellor) on Aug 22, 2006 at 11:26 UTC

    If the file is binary, you should add:

    binmode MYFILE;
    right after the open. Also the line:
    if ($byte > 0x30) {
    should read:
    if (ord($byte) > 0x30) {

Re^2: BIN to HEX
by betterworld (Curate) on Aug 22, 2006 at 11:15 UTC
    if ($byte > 0x30) {
    Shouldn't that be ord($byte) > 0x30?

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