+my %version = ();
+
+sub get_version {
+ return %version if %version;
+
+ # Attempt to retrieve version information from src/version.sh
+ chomp(my $vf = `sh src/version.sh 2>/dev/null`);
+ if ($vf =~ /^InspIRCd-([0-9]+)\.([0-9]+)\.([0-9]+)(?:\+(\w+))?$/) {
+ %version = ( MAJOR => $1, MINOR => $2, PATCH => $3, LABEL => $4 );
+ }
+
+ # Attempt to retrieve missing version information from Git
+ chomp(my $gr = `git describe --tags 2>/dev/null`);
+ if ($gr =~ /^v([0-9]+)\.([0-9]+)\.([0-9]+)(?:-\d+-(\w+))?$/) {
+ $version{MAJOR} = $1 unless defined $version{MAJOR};
+ $version{MINOR} = $2 unless defined $version{MINOR};
+ $version{PATCH} = $3 unless defined $version{PATCH};
+ $version{LABEL} = $4 if defined $4;
+ }
+
+ # The user is using a stable release which does not have
+ # a label attached.
+ $version{LABEL} = 'release' unless defined $version{LABEL};
+
+ # If any of these fields are missing then the user has deleted the
+ # version file and is not running from Git. Fill in the fields with
+ # dummy data so we don't get into trouble with undef values later.
+ $version{MAJOR} = '0' unless defined $version{MAJOR};
+ $version{MINOR} = '0' unless defined $version{MINOR};
+ $version{PATCH} = '0' unless defined $version{PATCH};
+
+ return %version;
+}
+
+sub module_installed($) {
+ my $module = shift;
+ eval("use $module;");
+ return !$@;
+}
+
+sub prompt_bool($$$) {
+ my ($interactive, $question, $default) = @_;
+ my $answer = prompt_string($interactive, $question, $default ? 'y' : 'n');
+ return $answer =~ /y/i;
+}
+
+sub prompt_dir($$$) {
+ my ($interactive, $question, $default) = @_;
+ my ($answer, $create) = (undef, 'y');
+ do {
+ $answer = rel2abs(prompt_string($interactive, $question, $default));
+ $create = prompt_bool($interactive && !-d $answer, "$answer does not exist. Create it?", 'y');
+ my $mkpath = eval {
+ mkpath($answer, 0, 0750);
+ return 1;
+ };
+ unless (defined $mkpath) {
+ print "Error: unable to create $answer!\n\n";
+ $create = 0;
+ }
+ } while (!$create);
+ return $answer;
+}
+
+sub prompt_string($$$) {
+ my ($interactive, $question, $default) = @_;
+ return $default unless $interactive;
+ print $question, "\n";
+ print "[\e[1;32m$default\e[0m] => ";
+ chomp(my $answer = <STDIN>);
+ print "\n";
+ return $answer ? $answer : $default;
+}
+
+sub get_cpu_count {
+ my $count = 1;
+ if ($^O =~ /bsd/) {
+ $count = `sysctl -n hw.ncpu`;
+ } elsif ($^O eq 'darwin') {
+ $count = `sysctl -n hw.activecpu`;
+ } elsif ($^O eq 'linux') {
+ $count = `getconf _NPROCESSORS_ONLN`;
+ } elsif ($^O eq 'solaris') {
+ $count = `psrinfo -p`;
+ }
+ chomp($count);
+ return $count;
+}