Task #1

2 files changed, 43 insertions, 0 deletions

diff --git a/challenge-062/perlboy1967/blog.txt b/challenge-062/perlboy1967/blog.txt
new file mode 100644
index 0000000000..b8d62bb7bb
--- /dev/null
+++ b/challenge-062/perlboy1967/blog.txt
@@ -0,0 +1 @@
+URL to the blog
diff --git a/challenge-062/perlboy1967/perl/ch-1.pl b/challenge-062/perlboy1967/perl/ch-1.pl
new file mode 100755
index 0000000000..aba014f6f6
--- /dev/null
+++ b/challenge-062/perlboy1967/perl/ch-1.pl
@@ -0,0 +1,42 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+my @emailInput;
+my @emailOutput;
+
+# Prototype for 'by reference' variables (speed)
+sub sortEmail ($$);
+
+my $uniq = (($ARGV[0] // '') eq '-u' ? 1 : 0);
+shift(@ARGV) if $uniq;
+push(@ARGV, '-') unless @ARGV;
+
+foreach (@ARGV) {
+  my $fh;
+
+  if ($_ eq '-') {
+    open($fh, '<&STDIN');
+  } else {
+    open($fh, $_);
+  }
+
+  while (<$fh>) {
+    push (@emailInput, $1) if (m#^\s*(.*?)\s*$#);
+  }
+}
+
+@emailOutput = sort sortEmail @emailInput;
+@emailOutput = keys { map { lc($_) => 1 } @emailOutput}
+  if ($uniq);
+
+print join("\n", @emailOutput, '');
+
+sub sortEmail ($$) {
+  my ($r1, $d1) = $_[0] =~ m#^([^@]+)@(.*)#;
+  my ($r2, $d2) = $_[1] =~ m#^([^@]+)@(.*)#;
+
+  return (lc($d1) cmp lc($d2) || $r1 cmp $r2);
+}
+