lexer: add networkd file LPeg lexer

2 files changed, 275 insertions, 0 deletions

diff --git a/lexers/networkd.lua b/lexers/networkd.lua
new file mode 100644
index 0000000..3f27bae
--- /dev/null
+++ b/lexers/networkd.lua
@@ -0,0 +1,274 @@
+-- Copyright 2016 Christian Hesse
+-- systemd networkd file LPeg lexer.
+
+local l = require('lexer')
+local token, word_match = l.token, l.word_match
+local P, R, S = lpeg.P, lpeg.R, lpeg.S
+
+local M = {_NAME = 'networkd'}
+
+-- Whitespace.
+local ws = token(l.WHITESPACE, l.space^1)
+
+-- Comments.
+local comment = token(l.COMMENT, l.starts_line(S(';#')) * l.nonnewline^0)
+
+-- Strings.
+local sq_str = l.delimited_range("'")
+local dq_str = l.delimited_range('"')
+local section_word = word_match{
+  'Address',
+  'Link',
+  'Match',
+  'Network',
+  'Route',
+  'DHCP',
+  'DHCPServer',
+  'Bridge',
+  'BridgeFDB',
+  'NetDev',
+  'VLAN',
+  'MACVLAN',
+  'MACVTAP',
+  'IPVLAN',
+  'VXLAN',
+  'Tunnel',
+  'Peer',
+  'Tun',
+  'Tap',
+  'Bond'
+}
+local string = token(l.STRING, sq_str + dq_str + '[' * section_word * ']')
+
+-- Numbers.
+local dec = l.digit^1 * ('_' * l.digit^1)^0
+local oct_num = '0' * S('01234567_')^1
+local integer = S('+-')^-1 * (l.hex_num + oct_num + dec)
+local number = token(l.NUMBER, (l.float + integer))
+
+-- Keywords.
+local keyword = token(l.KEYWORD, word_match{
+  -- boolean values
+  'true',
+  'false',
+  'on',
+  'off',
+  'yes',
+  'no',
+})
+
+-- Options.
+local option_word = word_match{
+  -- match section options
+  'MACAddress',
+  'OriginalName',
+  'Path',
+  'Driver',
+  'Type',
+  'Host',
+  'Name',
+  'Virtualization',
+  'KernelCommandLine',
+  'Architecture',
+
+  -- link section options
+  'Description',
+  'Alias',
+  'MACAddressPolicy',
+  'MACAddress',
+  'NamePolicy',
+  'Name',
+  'MTUBytes',
+  'BitsPerSecond',
+  'Duplex',
+  'WakeOnLan',
+
+  -- network section options
+  'Description',
+  'DHCP',
+  'DHCPServer',
+  'LinkLocalAddressing',
+  'IPv4LLRoute',
+  'IPv6Token',
+  'LLMNR',
+  'MulticastDNS',
+  'DNSSEC',
+  'DNSSECNegativeTrustAnchors',
+  'LLDP',
+  'BindCarrier',
+  'Address',
+  'Gateway',
+  'DNS',
+  'Domains',
+  'NTP',
+  'IPForward',
+  'IPMasquerade',
+  'IPv6PrivacyExtensions',
+  'IPv6AcceptRouterAdvertisements',
+  'IPv6DuplicateAddressDetection',
+  'IPv6HopLimit',
+  'Bridge',
+  'Bond',
+  'VLAN',
+  'MACVLAN',
+  'VXLAN',
+  'Tunnel',
+
+  -- address section options
+  'Address',
+  'Peer',
+  'Broadcast',
+  'Label',
+
+  -- route section options
+  'Gateway',
+  'Destination',
+  'Source',
+  'Metric',
+  'Scope',
+  'PreferredSource',
+
+  -- dhcp section options
+  'UseDNS',
+  'UseNTP',
+  'UseMTU',
+  'SendHostname',
+  'UseHostname',
+  'Hostname',
+  'UseDomains',
+  'UseRoutes',
+  'UseTimezone',
+  'CriticalConnection',
+  'ClientIdentifier',
+  'VendorClassIdentifier',
+  'RequestBroadcast',
+  'RouteMetric',
+
+  -- dhcpserver section options
+  'PoolOffset',
+  'PoolSize',
+  'DefaultLeaseTimeSec',
+  'MaxLeaseTimeSec',
+  'EmitDNS',
+  'DNS',
+  'EmitNTP',
+  'NTP',
+  'EmitTimezone',
+  'Timezone',
+
+  -- bridge section options
+  'UnicastFlood',
+  'HairPin',
+  'UseBPDU',
+  'FastLeave',
+  'AllowPortToBeRoot',
+  'Cost',
+
+  -- bridgefdb section options
+  'MACAddress',
+  'VLANId',
+
+  -- netdev section options
+  'Description',
+  'Name',
+  'Kind',
+  'MTUBytes',
+  'MACAddress',
+
+  -- bridge (netdev) section options
+  'HelloTimeSec',
+  'MaxAgeSec',
+  'ForwardDelaySec',
+
+  -- vlan section options
+  'Id',
+
+  -- macvlan, macvtap and ipvlan section options
+  'Mode',
+
+  -- vxlan section options
+  'Id',
+  'Group',
+  'TOS',
+  'TTL',
+  'MacLearning',
+  'FDBAgeingSec',
+  'MaximumFDBEntries',
+  'ARPProxy',
+  'L2MissNotification',
+  'L3MissNotification',
+  'RouteShortCircuit',
+  'UDPCheckSum',
+  'UDP6ZeroChecksumTx',
+  'UDP6ZeroCheckSumRx',
+  'GroupPolicyExtension',
+  'DestinationPort',
+  'PortRange',
+
+  -- tunnel section options
+  'Local',
+  'Remote',
+  'TOS',
+  'TTL',
+  'DiscoverPathMTU',
+  'IPv6FlowLabel',
+  'CopyDSCP',
+  'EncapsulationLimit',
+  'Mode',
+
+  -- peer section options
+  'Name',
+  'MACAddress',
+
+  -- tun and tap section options
+  'OneQueue',
+  'MultiQueue',
+  'PacketInfo',
+  'VNetHeader',
+  'User',
+  'Group',
+
+  -- bond section options
+  'Mode',
+  'TransmitHashPolicy',
+  'LACPTransmitRate',
+  'MIIMonitorSec',
+  'UpDelaySec',
+  'DownDelaySec',
+  'LearnPacketIntervalSec',
+  'AdSelect',
+  'FailOverMACPolicy',
+  'ARPValidate',
+  'ARPIntervalSec',
+  'ARPIPTargets',
+  'ARPAllTargets',
+  'PrimaryReselectPolicy',
+  'ResendIGMP',
+  'PacketsPerSlave',
+  'GratuitousARP',
+  'AllSlavesActive',
+  'MinLinks',
+}
+local preproc = token(l.PREPROCESSOR, option_word)
+
+-- Identifiers.
+local word = (l.alpha + '_') * (l.alnum + S('_.'))^0
+local identifier = token(l.IDENTIFIER, word)
+
+-- Operators.
+local operator = token(l.OPERATOR, '=')
+
+M._rules = {
+  {'whitespace', ws},
+  {'keyword', keyword},
+  {'string', string},
+  {'preproc', preproc},
+  {'identifier', identifier},
+  {'comment', comment},
+  {'number', number},
+  {'operator', operator},
+}
+
+M._LEXBYLINE = true
+
+return M
diff --git a/vis.lua b/vis.lua
index 56c9ca7..47be490 100644
--- a/vis.lua
+++ b/vis.lua
@@ -142,6 +142,7 @@ vis.filetypes =	{
 	[".ledger|.journal"] = "ledger",
 	[".less"] = "less",
 	[".lily|.ly"] = "lilypond",
+	[".link|.network|.netdev"] = "networkd",
 	[".litcoffee"] = "litcoffee",
 	[".lua"] = "lua",
 	[".md|.markdown"] = "markdown",