From a file handle: 
local $/ = \128;
while (<$fh>) {
   ... $_ contains 128 bytes ...
}

[download]
From a string: 
while (length($str)) {
   my $rec = substr($str, 0, 128, '');
   ... $rec contains 128 bytes ...
}

[download]

Note that offsets should be 0-127, 128-255, etc.

In reply to Re: How to split by character ? by ikegami
in thread How to split by character ? by bh_perl

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