" Vim syntax file
" Language: resolver configuration file
" Maintainer: Radu Dineiu <[email protected]>
" URL: https://raw.github.com/rid9/vim-resolv/master/resolv.vim
" Last Change: 2013 May 21
" Version: 1.0
"
" Credits:
" David Necas (Yeti) <[email protected]>
" Stefano Zacchiroli <[email protected]>

if version < 600
syntax clear
elseif exists("b:current_syntax")
finish
endif

" Errors, comments and operators
syn match resolvError /./
syn match resolvComment /\s*[#;].*$/
syn match resolvOperator /[\/:]/ contained

" IP
syn cluster resolvIPCluster contains=resolvIPError,resolvIPSpecial
syn match resolvIPError /\%(\d\{4,}\|25[6-9]\|2[6-9]\d\|[3-9]\d\{2}\)[\.0-9]*/ contained
syn match resolvIPSpecial /\%(127\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}\)/ contained

" General
syn match resolvIP contained /\%(\d\{1,4}\.\)\{3}\d\{1,4}/ contains=@resolvIPCluster
syn match resolvIPNetmask contained /\%(\d\{1,4}\.\)\{3}\d\{1,4}\%(\/\%(\%(\d\{1,4}\.\)\{,3}\d\{1,4}\)\)\?/ contains=resolvOperator,@resolvIPCluster
syn match resolvHostname contained /\w\{-}\.[-0-9A-Za-z_\.]*/

" Particular
syn match resolvIPNameserver contained /\%(\%(\d\{1,4}\.\)\{3}\d\{1,4}\%(\s\|$\)\)\+/ contains=@resolvIPCluster
syn match resolvHostnameSearch contained /\%(\%([-0-9A-Za-z_]\+\.\)*[-0-9A-Za-z_]\+\.\?\%(\s\|$\)\)\+/
syn match resolvIPNetmaskSortList contained /\%(\%(\d\{1,4}\.\)\{3}\d\{1,4}\%(\/\%(\%(\d\{1,4}\.\)\{,3}\d\{1,4}\)\)\?\%(\s\|$\)\)\+/ contains=resolvOperator,@resolvIPCluster

" Identifiers
syn match resolvNameserver /^\s*nameserver\>/ nextgroup=resolvIPNameserver skipwhite
syn match resolvLwserver /^\s*lwserver\>/ nextgroup=resolvIPNameserver skipwhite
syn match resolvDomain /^\s*domain\>/ nextgroup=resolvHostname skipwhite
syn match resolvSearch /^\s*search\>/ nextgroup=resolvHostnameSearch skipwhite
syn match resolvSortList /^\s*sortlist\>/ nextgroup=resolvIPNetmaskSortList skipwhite
syn match resolvOptions /^\s*options\>/ nextgroup=resolvOption skipwhite

" Options
syn match resolvOption /\<\%(debug\|no_tld_query\|rotate\|no-check-names\|inet6\)\>/ contained nextgroup=resolvOption skipwhite
syn match resolvOption /\<\%(ndots\|timeout\|attempts\):\d\+\>/ contained contains=resolvOperator nextgroup=resolvOption skipwhite

" Additional errors
syn match resolvError /^search .\{257,}/

if version >= 508 || !exists("did_config_syntax_inits")
if version < 508
let did_config_syntax_inits = 1
command! -nargs=+ HiLink hi link <args>
else
command! -nargs=+ HiLink hi def link <args>
endif

HiLink resolvIP Number
HiLink resolvIPNetmask Number
HiLink resolvHostname String
HiLink resolvOption String

HiLink resolvIPNameserver Number
HiLink resolvHostnameSearch String
HiLink resolvIPNetmaskSortList Number

HiLink resolvNameServer Identifier
HiLink resolvLwserver Identifier
HiLink resolvDomain Identifier
HiLink resolvSearch Identifier
HiLink resolvSortList Identifier
HiLink resolvOptions Identifier

HiLink resolvComment Comment
HiLink resolvOperator Operator
HiLink resolvError Error
HiLink resolvIPError Error
HiLink resolvIPSpecial Special

delcommand HiLink
endif

let b:current_syntax = "resolv"

" vim: ts=8 ft=vim