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Portically.pm
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#!/usr/bin/perl -w
package Portically;
use strict;
use List::Util qw[min max];
# The SwitchMap programs sorts port names in several places, using the
# Perl "sort" function. It also uses the sort function to sort
# machine names. By default, the Perl sort algorithm sorts
# "ASCIIbetically", so that "2/11" ends up before "2/1", and "108"
# ends up before "2" and "ml-mr-c10-gs" ends up before "ml-mr-c2-gs".
# The PortSort subroutine sorts Cisco port names in the way that's
# expected by humans.
#
# Example Cisco IOS network interface names that have been
# seen "in the wild":
#
# 5/7
# As0/1/0
# Fa2/1
# Gi0/1
# Gi11/7/1
# Lo0
# Mu1
# Se0/0/1:0
# T1 0/0/1
# Te4/2
# Tu1
# FastEthernet0/0.406 (maybe only in configs)
# SPAN RP
# CPP
#
sub portically {
return 0 if (!defined $a) and (!defined $b);
return -1 if !defined $a;
return 1 if !defined $b;
# parse it into pieces: the leading "media" piece like "Gi",
# followed by the port "numbers" (numbers, colons and dots) pieces
# that are separated by slashes.
my $AMedia = '';
my @APieces;
if (($a =~ /^(\D*)([\d:\.]+)\/?([\d:\.]*)\/?([\d:\.]*)$/) or
($a =~ /^(\w+) ([\d:\.]+)\/?([\d:\.]*)\/?([\d:\.]*)$/)) {
$AMedia = $1 if defined $1;
push @APieces, $2, $3, $4;
} else {
$AMedia = $a;
}
my $BMedia = '';
my @BPieces;
if (($b =~ /^(\D*)([\d:\.]+)\/?([\d:\.]*)\/?([\d:\.]*)$/) or
($b =~ /^(\w+) ([\d:\.]+)\/?([\d:\.]*)\/?([\d:\.]*)$/)) {
$BMedia = $1 if defined $1;
push @BPieces, $2, $3, $4;
} else {
$BMedia = $b;
}
return -1 if !$AMedia and $BMedia;
return 1 if $AMedia and !$BMedia;
if (($AMedia and $BMedia) and ($AMedia ne $BMedia)) {
my $ALen = length $AMedia;
for (my $i = 0; $i < $ALen; $i++) {
my $AChar = substr $AMedia, $i, 1;
my $BChar = substr $BMedia, $i, 1;
return -1 if ord($AChar) < ord($BChar);
return 1 if ord($AChar) > ord($BChar);
}
return 0;
}
# if we made it to here, the "media" pieces are equal, so compare
# the other pieces.
my $Index = 0;
my $MaxPieces = max $#APieces, $#BPieces;
while ($Index <= $MaxPieces) {
return -1 if !defined $APieces[$Index];
return 1 if !defined $BPieces[$Index];
my @achunks = split /:|\./, $APieces[$Index];
my @bchunks = split /:|\./, $BPieces[$Index];
my $CIndex = 0;
my $MaxChunks = max $#achunks, $#bchunks;
while ($CIndex <= $MaxChunks) {
return -1 if !defined $achunks[$CIndex];
return 1 if !defined $bchunks[$CIndex];
my $AChunk = $achunks[$CIndex];
my $BChunk = $bchunks[$CIndex];
return -1 if $AChunk < $BChunk;
return 1 if $AChunk > $BChunk;
$CIndex++;
}
$Index++;
}
return 0;
}
sub PortSort {
return sort portically @_;
}
# Testing:
# my @inlist = (
# '5/4',
# 'Te4/2',
# '5/7',
# '7/13',
# '7/9',
# '8/3',
# 'As0/1/0',
# 'Fa2/1',
# 'FastEthernet0/0.406',
# 'Gi0/1',
# 'Gi1/2/1',
# 'Gi1/2/11',
# 'Gi1/2/12',
# 'FastEthernet0/0.700',
# 'Gi1/3/1',
# 'Gi1/3/2',
# 'Gi1/4/1',
# 'Gi1/4/2',
# 'Gi1/5/1',
# '7/10',
# 'Gi1/7/1',
# 'Gi11/7/1',
# 'Gi11/7/1',
# 'Se0/0/1:0',
# 'Gi12/7/1',
# 'Gi2/2/1',
# 'Gi2/7/2',
# 'Gi22/10/1',
# 'Gi22/17/1',
# 'Gi22/7/1',
# 'Lo0',
# 'Mu1',
# 'Se0/0/12:0',
# 'T1 0/0/1',
# 'Gi22/0/1',
# 'T1 0/0/0',
# 'Tu1',
# '9/6',
# '7/29',
# '1/1',
# '7/38',
# '8/14',
# '7/17',
# '7/47',
# '9/20',
# '8/24',
# '8/34',
# '7/21',
# '8/48',
# '7/18',
# '9/43',
# '8/36',
# '8/7',
# '9/36',
# '9/19',
# '9/25',
# '8/44',
# '7/45',
# '7/8',
# '9/27',
# '8/38',
# '8/1',
# '9/38',
# '9/34',
# '8/3',
# '7/10',
# '7/41',
# '7/15',
# '7/32',
# '8/42',
# '7/43',
# '8/8',
# '9/22',
# '8/31',
# '9/17',
# '7/22',
# '8/47',
# '8/4',
# '7/27',
# '8/21',
# '9/23',
# '9/2',
# '2/1',
# '7/13',
# '8/29',
# '9/30',
# '7/30',
# '7/6',
# '8/33',
# '9/42',
# '8/19',
# '9/14',
# '9/32',
# '7/11',
# '7/3',
# '8/35',
# '8/26',
# '7/20',
# '8/5',
# '7/16',
# '9/48',
# '8/12',
# '9/12',
# '9/46',
# '9/40',
# '7/34',
# '8/41',
# '8/17',
# '9/4',
# '9/44',
# '7/25',
# '7/44',
# '9/26',
# '9/37',
# '8/45',
# '9/18',
# '8/23',
# '9/11',
# '8/2',
# '7/19',
# '7/31',
# '8/30',
# '7/48',
# '9/39',
# '7/39',
# '8/9',
# '8/13',
# '9/5',
# '8/15',
# '9/21',
# '7/33',
# '7/1',
# '8/43',
# '8/20',
# '9/13',
# '8/6',
# '8/10',
# '8/18',
# '9/35',
# '8/37',
# '8/39',
# '7/36',
# '7/9',
# '8/25',
# '9/8',
# '7/40',
# '7/14',
# '9/28',
# '7/46',
# '7/12',
# '9/47',
# '7/37',
# '7/26',
# '8/11',
# '9/24',
# '8/28',
# '9/1',
# '7/42',
# '9/29',
# '7/2',
# '9/31',
# '7/7',
# '9/15',
# '9/9',
# '7/4',
# '9/10',
# '7/35',
# '8/27',
# '8/46',
# '7/24',
# '7/23',
# '1/2',
# '8/16',
# '8/32',
# '8/22',
# '2/2',
# '9/33',
# '9/41',
# '9/7',
# '8/40',
# '7/28',
# '9/45',
# '9/16',
# '7/5',
# '9/3',
# 'ml-mr-c1-gs',
# 'ml-mr-c10-gs',
# 'ml-mr-c2-gs',
# );
# print "yo.\n";
# foreach (PortSort(@inlist)) {
# print "sorted inlist = $_\n";
# }
1;