Hello all, I got problems in perl. I have 2 text file call it 1) data 2) source.txt The data file contain teks file like this : 
\tl:&#xa12
\tr:&#xa13
\ca:&#xa15
\ra:&#xa16
\ka:&#xa17
...

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Data file contain two colomn "key" and "values" separated by ":" and the source.txt contain 
\tl\ca\ra\tr\ka ...

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source.txt file contain "key" such as in data file. I need a new file call it target.txt that contain "values" form data according to "keys" in source.txt 
&#xa12&#xa15&#xa16&#xa13&#xa17

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#!/usr/bin/perl

use strict;
use warnings;

my $dfile = 'data';
my $sfile = 'source.txt';
my $tfile = 'target.txt';
open (DFILE,$dfile) or die "can not open";
open (SFILE,$sfile) or die "can not open";
open (TFILE,"> $tfile") or die "can not open";

my %words;
while (<DFILE>) {
        chomp;
        my ($key, $val) = split /:/;
        $words{$key} .= exists $words{$key} ? "$val" : $val;
};
while (my $s = <SFILE>) {
chomp($s);
my @words = split / /, $s;
foreach my $val (@words) {
  }
   for my $i (0 .. $#words) {
     $words[$i] = $words{$words[$i]} if (exists($words{$words[$i]}))
        }
   print TFILE join(' ', @words),$/;
   print TFILE "<br>";
}


close(SFILE);
close(DFILE);
close(TFILE);

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The code above work if only if the source.txt contain keys separated with space, 
\ca \ra \ka \tl

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but fail to work if source.txt is 
\ca\ra\ka\tl

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I try to make hash from data but I confuse how to compare it and replace it, if source.txt contain "keys" without space

In reply to Compare two file text input, compare it, replace and write new file by wa2nlinux

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