This is how I would start, but I'd need more complete spec 

#!/usr/bin/perl --
use strict; use warnings;
use Data::Dump;

my $rawAsHex = q'0001000000004f914f1c0b0100425343413030000000050000434
+130303030300000000143413030303134000000024341303030323200000003434130
+3030323400000004434130303032390000000100224e43656c6c30000000020042534
+341303100000005000543413031303031000000064341303130303400000007434130
+31303130000000084341303130313500000009434130313031360000000100224e436
+56c6c30000000030042534341303200000006000a';
my $raw = pack 'H*', $rawAsHex;
my @stack = unpack q{
A2 ### Header Record Id : 1 Byte
A2 ### File Format Version : 1 Byte
A16 ### Timestamp : 8 Bytes
A2 ### No. of BSCs : 1 Byte
   ###     For each BSC ...
A2 ###     BSC Id : 1 Byte
A2 ###     Application Version : 1 Byte
A4 ###     BSC Name : 2 Bytes
A4 ###     Number of Cells : 2 Bytes
   ###         For each Cell ...
A4 ###         Cell Pointer : 2 Bytes
A18 ###         Cell Name : 9 Bytes
A4 ###         Number of Neighbour Cells : 2 Bytes
   ###             For each Neighbour Cell to this BSC ...
A4 ###             Cell Pointer : 2 Bytes
A18 ###             Cell Name : 9 Bytes
}, $rawAsHex;

my $id      = unpack 'C*', pack 'H*', $stack[0];
my $version = unpack 'C*', pack 'H*', $stack[1];
my $time    = unpack 'H*', pack 'H*', $stack[2]; ## WHAT?!

dd [ $id, $version, $time , \@stack ];
__END__
[
  0,
  1,
  "000000004f914f1c",
  [
    "00",
    "01",
    "000000004f914f1c",
    "0b",
    "01",
    "00",
    4253,
    4341,
    3030,
    "000000050000434130",
    3030,
    3030,
    "000000014341303030",
  ],
]

[download]

In reply to Re: Handling Hex data with Dynamic unpack by Anonymous Monk
in thread Handling Hex data with Dynamic unpack by PerlJedi

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