185 lines
9.6 KiB
EmacsLisp
185 lines
9.6 KiB
EmacsLisp
;;; systemd-company.el --- company backend for systemd unit directives -*- lexical-binding: t -*-
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;; Copyright (C) 2015 Mark Oteiza <mvoteiza@udel.edu>
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;; Author: Mark Oteiza <mvoteiza@udel.edu>
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License
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;; as published by the Free Software Foundation; either version 3
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;; of the License, or (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'cl-lib)
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(declare-function company-mode "company")
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(declare-function company-begin-backend "company")
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(declare-function company-grab-symbol "company")
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(defconst systemd-company-unit-sections
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'("Unit" "Install" "Service")
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"Configuration sections for systemd 225.")
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(defconst systemd-company-unit-directives
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;; TODO: keep a script of sorts for generating this list. systemd
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;; source has a python script in tools/ for parsing the
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;; documentation xml for the unit directives.
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;;
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;; forcer on freenode threw together a curl monstrosity for achieving
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;; the same:
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;; curl -s http://www.freedesktop.org/software/systemd/man/systemd.directives.html | tr -d '\n' | sed 's/>/>\n/g' | sed -ne '/Unit directives/,/Options on the kernel/p' | sed -ne 's/.*<dt id="\([^-][^"]*\)=">.*/\1/p'
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;; Quote, wrap with fill-column at 72, insert into list and indent
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'("Accept" "AccuracySec" "After" "Alias" "AllowIsolate" "Also"
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"AppArmorProfile" "AssertACPower" "AssertArchitecture"
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"AssertCapability" "AssertDirectoryNotEmpty" "AssertFileIsExecutable"
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"AssertFileNotEmpty" "AssertFirstBoot" "AssertHost"
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"AssertKernelCommandLine" "AssertNeedsUpdate" "AssertPathExists"
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"AssertPathExistsGlob" "AssertPathIsDirectory" "AssertPathIsMountPoint"
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"AssertPathIsReadWrite" "AssertPathIsSymbolicLink" "AssertSecurity"
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"AssertVirtualization" "Backlog" "Before" "BindIPv6Only" "BindToDevice"
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"BindsTo" "BlockIOAccounting" "BlockIODeviceWeight"
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"BlockIOReadBandwidth" "BlockIOWeight" "BlockIOWriteBandwidth"
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"Broadcast" "BusName" "BusPolicy" "CPUAccounting" "CPUAffinity"
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"CPUQuota" "CPUSchedulingPolicy" "CPUSchedulingPriority"
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"CPUSchedulingResetOnFork" "CPUShares" "Capabilities"
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"CapabilityBoundingSet" "ConditionACPower" "ConditionArchitecture"
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"ConditionCapability" "ConditionDirectoryNotEmpty"
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"ConditionFileIsExecutable" "ConditionFileNotEmpty" "ConditionFirstBoot"
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"ConditionHost" "ConditionKernelCommandLine" "ConditionNeedsUpdate"
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"ConditionPathExists" "ConditionPathExistsGlob"
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"ConditionPathIsDirectory" "ConditionPathIsMountPoint"
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"ConditionPathIsReadWrite" "ConditionPathIsSymbolicLink"
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"ConditionSecurity" "ConditionVirtualization" "Conflicts"
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"DefaultDependencies" "DefaultInstance" "DeferAcceptSec" "Delegate"
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"Description" "DeviceAllow" "DevicePolicy" "DirectoryMode"
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"DirectoryNotEmpty" "Documentation" "Environment" "EnvironmentFile"
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"ExecReload" "ExecStart" "ExecStartPost" "ExecStartPre" "ExecStop"
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"ExecStopPost" "ExecStopPre" "FailureAction" "FileDescriptorStoreMax"
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"FreeBind" "Group" "GuessMainPID" "IOSchedulingClass"
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"IOSchedulingPriority" "IPTOS" "IPTTL" "IgnoreOnIsolate"
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"IgnoreOnSnapshot" "IgnoreSIGPIPE" "InaccessibleDirectories"
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"JobTimeoutAction" "JobTimeoutRebootArgument" "JobTimeoutSec"
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"JoinsNamespaceOf" "KeepAlive" "KeepAliveIntervalSec" "KeepAliveProbes"
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"KeepAliveTimeSec" "KillMode" "KillSignal" "LimitAS" "LimitCORE"
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"LimitCPU" "LimitDATA" "LimitFSIZE" "LimitLOCKS" "LimitMEMLOCK"
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"LimitMSGQUEUE" "LimitNICE" "LimitNOFILE" "LimitNPROC" "LimitRSS"
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"LimitRTPRIO" "LimitRTTIME" "LimitSIGPENDING" "LimitSTACK"
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"ListenDatagram" "ListenFIFO" "ListenMessageQueue" "ListenNetlink"
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"ListenSequentialPacket" "ListenSpecial" "ListenStream" "MakeDirectory"
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"Mark" "MaxConnections" "MemoryAccounting" "MemoryLimit"
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"MessageQueueMaxMessages" "MessageQueueMessageSize" "MountFlags" "Nice"
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"NoDelay" "NoNewPrivileges" "NonBlocking" "NotifyAccess"
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"OOMScoreAdjust" "OnActiveSec" "OnBootSec" "OnCalendar" "OnFailure"
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"OnFailureJobMode" "OnStartupSec" "OnUnitActiveSec" "OnUnitInactiveSec"
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"Options" "PAMName" "PIDFile" "PartOf" "PassCredentials" "PassSecurity"
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"PathChanged" "PathExists" "PathExistsGlob" "PathModified"
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"PermissionsStartOnly" "Persistent" "Personality" "PipeSize" "Priority"
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"PrivateDevices" "PrivateNetwork" "PrivateTmp" "PropagatesReloadTo"
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"ProtectHome" "ProtectSystem" "ReadOnlyDirectories"
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"ReadWriteDirectories" "RebootArgument" "ReceiveBuffer"
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"RefuseManualStart" "RefuseManualStop" "ReloadPropagatedFrom"
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"RemainAfterExit" "RemoveOnStop" "RequiredBy" "Requires"
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"RequiresMountsFor" "RequiresOverridable" "Requisite"
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"RequisiteOverridable" "Restart" "RestartForceExitStatus"
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"RestartPreventExitStatus" "RestartSec" "RestrictAddressFamilies"
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"ReusePort" "RootDirectory" "RootDirectoryStartOnly" "RuntimeDirectory"
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"RuntimeDirectoryMode" "SELinuxContext" "SELinuxContextFromNet"
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"SecureBits" "SendBuffer" "SendSIGHUP" "SendSIGKILL" "Service" "Slice"
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"SloppyOptions" "SmackLabel" "SmackLabelIPIn" "SmackLabelIPOut"
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"SmackProcessLabel" "SocketGroup" "SocketMode" "SocketUser" "Sockets"
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"SourcePath" "StandardError" "StandardInput" "StandardOutput"
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"StartLimitAction" "StartLimitBurst" "StartLimitInterval"
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"StartupBlockIOWeight" "StartupCPUShares" "StopWhenUnneeded"
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"SuccessExitStatus" "SupplementaryGroups" "Symlinks" "SyslogFacility"
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"SyslogIdentifier" "SyslogLevel" "SyslogLevelPrefix"
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"SystemCallArchitectures" "SystemCallErrorNumber" "SystemCallFilter"
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"TCPCongestion" "TTYPath" "TTYReset" "TTYVHangup" "TTYVTDisallocate"
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"TimeoutIdleSec" "TimeoutSec" "TimeoutStartSec" "TimeoutStopSec"
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"TimerSlackNSec" "Transparent" "Type" "UMask" "Unit" "User"
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"UtmpIdentifier" "UtmpMode" "WakeSystem" "WantedBy" "Wants"
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"WatchdogSec" "What" "Where" "WorkingDirectory")
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"Configuration directives for systemd 225.")
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(defconst systemd-company-network-sections
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'("Match" "Link" "NetDev" "VLAN" "MACVLAN" "MACVTAP" "IPVLAN" "VXLAN"
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"Tunnel" "Peer" "Tun" "Tap" "Bond" "Network" "Address" "Route" "DHCP"
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"Bridge" "BridgeFDB")
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"Network configuration sections for systemd 225.")
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(defconst systemd-company-network-directives
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;; /Network directives/,/Journal fields/p
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'("ARPAllTargets" "ARPIPTargets" "ARPIntervalSec" "ARPProxy" "ARPValidate"
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"AdSelect" "Address" "AllSlavesActive" "AllowPortToBeRoot"
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"Architecture" "BindCarrier" "BitsPerSecond" "Bond" "Bridge"
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"ClientIdentifier" "CopyDSCP" "Cost" "CriticalConnection" "DHCP"
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"DHCPServer" "DNS" "Description" "Destination" "DiscoverPathMTU" "Domains"
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"DownDelaySec" "Driver" "Duplex" "FDBAgeingSec" "FailOverMACPolicy"
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"FallbackDNS" "FallbackNTP" "FastLeave" "Gateway" "GratuitousARP"
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"GroupPolicyExtension" "HairPin" "Host" "Hostname" "IPForward"
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"IPMasquerade" "IPv4LLRoute" "IPv6FlowLabel" "IPv6PrivacyExtensions"
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"IPv6Token" "Id" "KernelCommandLine" "Kind" "L2MissNotification"
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"L3MissNotification" "LACPTransmitRate" "LLDP" "LLMNR" "Label"
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"LearnPacketIntervalSec" "LinkLocalAddressing" "Local" "MACAddress"
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"MACAddressPolicy" "MACVLAN" "MIIMonitorSec" "MTUBytes" "MacLearning"
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"Metric" "MinLinks" "Mode" "MultiQueue" "NTP" "Name" "NamePolicy"
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"OneQueue" "OriginalName" "PacketInfo" "PacketsPerSlave" "Path" "Peer"
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"PrimaryReselectPolicy" "Remote" "RequestBroadcast" "ResendIGMP"
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"RouteMetric" "RouteShortCircuit" "Scope" "SendHostname" "Source" "TOS"
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"TTL" "TransmitHashPolicy" "Tunnel" "UDP6ZeroCheckSumRx"
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"UDP6ZeroChecksumTx" "UDPCheckSum" "UnicastFlood" "UpDelaySec" "UseBPDU"
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"UseDNS" "UseDomains" "UseHostname" "UseMTU" "UseNTP" "UseRoutes" "VLAN"
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"VLANId" "VNetHeader" "VXLAN" "VendorClassIdentifier" "Virtualization"
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"WakeOnLan")
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"Network configuration directives for systemd 225.")
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(defun systemd-company--setup (enable)
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(when (fboundp 'systemd-company--setup-company)
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(systemd-company--setup-company enable)))
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(defun systemd-company-section-p ()
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"Return t if current line begins with \"[\", otherwise nil."
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(save-excursion
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(beginning-of-line)
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(looking-at "\\[")))
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(defun systemd-company-network-p ()
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"Return non-nil if `buffer-name' has a network-type extension, otherwise nil."
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(string-match "\\.\\(link\\|netdev\\|network\\)\\'" (buffer-name)))
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(with-eval-after-load "company"
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(defun systemd-company-backend (command &optional arg &rest ignored)
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(interactive (list 'interactive))
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(cl-case command
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(interactive (company-begin-backend 'systemd-company-backend))
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(prefix (and (eq major-mode 'systemd-mode)
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(company-grab-symbol)))
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(candidates
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(cl-remove-if-not
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(lambda (c) (string-prefix-p arg c))
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(if (systemd-company-network-p)
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(if (systemd-company-section-p)
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systemd-company-network-sections
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systemd-company-network-directives)
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(if (systemd-company-section-p)
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systemd-company-unit-sections
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systemd-company-unit-directives))))))
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(defun systemd-company--setup-company (enable)
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(when enable
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(add-to-list (make-local-variable 'company-backends) 'systemd-company-backend))
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(company-mode (if enable 1 -1))))
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(provide 'systemd-company)
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;;; systemd-company.el ends here
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