Hello, you asked the wrong question: if you split your file using "module xxx/endmodule" you end up with two empty lines.
What you really want is to grab everything between two markers to go in separates files. I underline this because the wrong question preclude you to obtain good answers.

In the case you describe you'll find very useful the flip-flop operator, a not well known operator, very useful insetad, described in the docs

#!/usr/bin/perl

use strict;
use warnings;
use Data::Dumper;

my @files;
my $file_index=0;

while (<DATA>) {
  if ($_ =~ /^module\s+/ .. /endmodule$/){
      $files[$file_index].=$_;
  }
  else {++$file_index;}
}
print scalar @files," elements in \@files:\n",Dumper (\@files);



__DATA__
module soc (PAD_TEST , VDIG_ON , GNDD_ON , VPP_EF , PAD_BOND_OPT );
inout  [31:0] PAD_TEST ;
input  VDIG_ON ;
input  GNDD_ON ;
inout  VPP_EF ;
inout  [5:0] PAD_BOND_OPT ;
endmodule

module analog_atop_wrapper (PAD_VDDTX , PAD_VREFADC , PAD_VSSRF ,
    DPAD_GSUB_XTAL24M , DPAD_GSUB_RX );
inout  PAD_VDDTX ;
inout  PAD_VREFADC ;
inout  PAD_VSSRF ;
inout  DPAD_GSUB_XTAL24M ;
inout  DPAD_GSUB_RX ;
endmodule

module misc_atop_wrapper (VDIG , VRTC , AVDD , EBUS , IOGND , VDIG_ON 
+);
inout  VDIG ;
inout  VRTC ;
inout  AVDD ;
inout  EBUS ;
inout  IOGND ;
input  VDIG_ON ;
endmodule

[download]


HtH
L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

In reply to Re: how to split file with some pattern by Discipulus
in thread how to split file with some pattern by herman4016

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.