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Need help with the Perl script

Posted on 2014-09-09
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Last Modified: 2014-09-09
Below is the compare script which compares strings in two text files.  The two attached files are workspace.txt and invalids.txt. This script checks if the string in workspace.txt is present in invalids.txt. If a match is found then corresponding line in invalids.txt is printed or else the string from workspace.txt is printed.

For example:

The above check in invalids.txt is to look for string between the dot(.)and colon(') at the end.
       
For instance in the file invalids.txt consider the line
'PACKAGE BODY: TRON2000.ts_k_jrp_300901sfsfs0_mma'      

For comparison only consider the string

ts_k_jrp_300901sfsfs0_mma

======If a match is found then print the complete corresponding line in invalids.txt  like


     'PACKAGE BODY: TRON2000.ts_k_jrp_300901sfsfs0_mma' is invalid

      or else just print the text from workspace.txt is valid ....in this case print

      ts_k_jrp_300901sfsfs0_mma is valid


Below is the script .


use strict;
use warnings;
use Fatal qw(open close);
my $finv = shift or die "Usage: $0 <invalids_file> <workspace_file>\n";
my $fwrk = shift or die "Usage: $0 <invalids_file> <workspace_file>\n";
open IN, $finv or die "could not open $finv: $!";
my %chk;
while (<IN>) {
    chomp;
    next if m{^\d+\s+rows?\s*$};
    if (m{\.(.*)'\s*$}) {
        $chk{$1} = $_;
    }
}
close IN;
open IN, $fwrk or die "could not open $fwrk: $!";
while (<IN>) {
    chomp;
    if (exists $chk{$_}) {
        print "$chk{$_} is invalid\n";
    } else {
        print "$_ is valid\n";
    }
}
close IN;
                           

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##########Need a modification in the above script to handle uppercase strings in invalids.txt like


'PACKAGE BODY: TRON2000.TS_K_JRP_300901SFSF0_MMA'

The call to the script is  test_compare.pl path/to/invalids.txt path/to/workspace.txt
workspace.txt
invalids.txt
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Question by:gaurav sharma
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Accepted Solution

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ozo earned 500 total points
ID: 40312265
#!/usr/bin/perl
use strict;
use warnings;
die "Usage: $0 <invalids_file> <workspace_file>\n" unless @ARGV==2;
use Fatal qw(open close);
my %chk;
while( <> ){
    s/\s+$//;
    @ARGV &&  m{\.(.*)'$} and $chk{lc $1} = $_;
    @ARGV || print $chk{lc $_}?"$chk{lc $_} is invalid\n":"$_ is valid\n";
}

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