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#!/usr/bin/perl
# Perl Weekly Challenge - 110
# - https://perlweeklychallenge.org/blog/perl-weekly-challenge-110/#TASK1
#
# Task 1 - Valid Phone Numbers
#
# Author: Niels 'PerlBoy' van Dijke
use v5.16;
use strict;
use warnings;
use File::Basename qw(dirname);
use File::Slurp;
use Test::More;
use Test::Deep;
# Prototype(s)
sub validatePhoneNumber($);
# Work relative from script directory
chdir(dirname($0));
cmp_deeply ([map { validatePhoneNumber($_) } read_file('input1.txt')],
['0044 1148820341',
'+44 1148820341',
'(44) 1148820341']);
done_testing;
# Interpreted the phone number rules to:
# 1) +nn nnnnnnnnnn:
# '+' followed 2-4 digits (see: https://countrycode.org/)
# followed by one or more spaces followed 6 or more digits
# 2) nnnn nnnnnnnnnn:
# '00' followed by 2-4 digits followed by one or more spaces
# followed by 6 or more digits
# 3) (nn) nnnnnnnnnn:
# '(' followed by 2-4 digits followed by ')' followed by
# one or more spaces followed by 6 or more digits
sub validatePhoneNumber($) {
my ($n) = @_;
# trim input
$n =~ s/^\s*(.+?)\s*$/$1/;
my ($ccMinLen,$ccMaxLen) = (2,4);
my $pMinLen = 6;
return $n if ($n =~ m/(
^ \+ \d{$ccMinLen,$ccMaxLen} \s+ \d{$pMinLen,} $ |
^ 00 \d{$ccMinLen,$ccMaxLen} \s+ \d{$pMinLen,} $ |
^ \( \d{$ccMinLen,$ccMaxLen} \) \s+ \d{$pMinLen,} $
)/x);
return;
}
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