I am haing a hard time getting this subroutine to work properly. The issue I am having is that the output skips all the way to the last else statement and prints "This is not a file! Attempting to process BTN...". Apparently I am missing something in my pattern matching, but I cannot figure it out. Any help would be much appreciated.

use strict;
use warnings;
use Getopts::Std;


#Global Variables
my $in_file    = $ARGV[0];
my $encoding = ":encoding(UTF-8)";





#Check file to see what type of file you are looking at.
sub check_file {
    
    my $head = system head => -1 => $in_file; # Grab header/first line
+ of file
    print $head;
        
    if ( $head =~ m/^ABC/ ) {
        print "This is a ABC File. Processing ABC File...\n";
        prcss_abc_file();
    }    else {
            if ( $head =~ m/^ISA~ / ) {
            print "This is an EDI File. Processing EDI File...\n";
            prcss_edi_file();
            }    else {
                print "This is not a file! Attempting to process BTN..
+.\n";
                prcss_btn();
                }    
        }
}

check_file();

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In reply to Matching patterns in condisional statements by smturner1

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