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# -*- coding: utf-8 -*- #
# frozen_string_literal: true
# Based on/regexes mostly from Brandon Bennett's pygments-routerlexers:
# https://github.com/nemith/pygments-routerlexers
module Rouge
module Lexers
class CiscoIos < RegexLexer
title 'Cisco IOS'
desc 'Cisco IOS configuration lexer'
tag 'cisco_ios'
filenames '*.cfg'
mimetypes 'text/x-cisco-conf'
state :root do
rule %r/^!.*/, Comment::Single
rule %r/^(version\s+)(.*)$/ do
groups Keyword, Num::Float
end
rule %r/(desc*r*i*p*t*i*o*n*)(.*?)$/ do
groups Keyword, Comment::Single
end
rule %r/^(inte*r*f*a*c*e*|controller|router \S+|voice translation-\S+|voice-port|line)(.*)$/ do
groups Keyword::Type, Name::Function
end
rule %r/(password|secret)(\s+[57]\s+)(\S+)/ do
groups Keyword, Num, String::Double
end
rule %r/(permit|deny)/, Operator::Word
rule %r/^(banner\s+)(motd\s+|login\s+)([#$%])/ do
groups Keyword, Name::Function, Str::Delimiter
push :cisco_ios_text
end
rule %r/^(dial-peer\s+\S+\s+)(\S+)(.*?)$/ do
groups Keyword, Name::Attribute, Keyword
end
rule %r/^(vlan\s+)(\d+)$/ do
groups Keyword, Name::Attribute
end
# IPv4 Address/Prefix
rule %r/(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})(\/\d{1,2})?/, Num
# NSAP
rule %r/49\.\d{4}\.\d{4}\.\d{4}\.\d{4}\.\d{2}/, Num
# MAC Address
rule %r/[a-f0-9]{4}\.[a-f0-9]{4}\.[a-f0-9]{4}/, Num::Hex
rule %r/^(\s*no\s+)(\S+)/ do
groups Keyword::Constant, Keyword
end
rule %r/^[^\n\r]\s*\S+/, Keyword
# Obfuscated Passwords
rule %r/\*+/, Name::Entity
rule %r/(?<= )\d+(?= )/, Num
# Newline catcher, avoid errors on empty lines
rule %r/\n+/m, Text
# This one goes last, a text catch-all
rule %r/./, Text
end
state :cisco_ios_text do
rule %r/[^#$%]/, Text
rule %r/[#$%]/, Str::Delimiter, :pop!
end
end
end
end
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