Dear Masters,
I have a script which basically does the following:
  1. Accept an input file text
  2. Check whether the exact text appear in one of the file in the repository.
    We have a hundreds of files in store.
  3. Return the name of the text in the repository if we have it, otherwise
  4. Return 'no matching file'
For example we would then have: 
prompt> perl check_filename.pl input_file.txt
prompt> Files in our repos: file1.txt

[download]
I was thinking if there is an efficient way to do this sort of thing on the fly? What I have now is simply storing them in hash. But it is very2 slow. 
#!/usr/bin/perl -w
use strict;
use File::Slurp;
use File::Basename;

my $input = $ARGV[0];
my @repos = glob("repos/*.txt");

# Store repos in hash

my %hash;
foreach my $repos_file (@repos) {
  my $text = read_file($repos_file);
  my $base = basename($repos_file,".txt");
  $hash{$text} = $base;
}


# check input files:

my $input_text = read_file($input);
if ($hash{$input_text}) {
   print "File in our repos: $hash{$input_text}\.txt\n";
}
else {
   print "no matching file\n";
}

[download]


---
neversaint and everlastingly indebted.......

In reply to Efficent Text Checking by neversaint

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