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Re^2: Perl Unpack Cobol Binary File and Fields

by soonix (Canon)
on May 07, 2020 at 12:07 UTC ( #11116537=note: print w/replies, xml ) Need Help??


in reply to Re: Perl Unpack Cobol Binary File and Fields
in thread Perl Unpack Cobol Binary File and Fields

You missed that FIELD4 has PICTURE 9(8) which doesn't fit in two bytes.

But, you are right, the modules for BCD do exist, as you expected, however, they are not the easiest to find.

Meanwhile, dbarkho14 probably has his problem solved, but here's my take on it, anyway:
(test data from Re^2: Perl Unpack Cobol Binary File and Fields)

use 5.011; use warnings; use Data::Dumper; my $rec = "\0\0\1\257\a\344\0\3\0\0\0s\0\6\2\267\0\0\0\0\0\0\5E\35\0\0 +\0\0\0\0\0\0\f"; say "Length is ", length $rec; my @fields = unpack "l>s>s>l>s>s>H18H18", $rec; say Dumper @fields; say Dumper map { my ($value, $sign) = unpack "A17A"; $value = ( $sign =~ /[BD]/i ? -1 : +1 ) * $value; } @fields[-2 .. -1];

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