zsh_completion: Split out zsh _systemctl

1 files changed, 340 insertions, 0 deletions

diff --git a/shell-completion/zsh/_systemctl b/shell-completion/zsh/_systemctl
new file mode 100644
index 0000000000..70d6f3394a
--- /dev/null
+++ b/shell-completion/zsh/_systemctl
@@ -0,0 +1,340 @@
+#compdef systemctl
+
+(( $+functions[_systemctl_command] )) || _systemctl_command()
+{
+  local -a _systemctl_cmds
+  _systemctl_cmds=(
+    "list-units:List units"
+    "start:Start (activate) one or more units"
+    "stop:Stop (deactivate) one or more units"
+    "reload:Reload one or more units"
+    "restart:Start or restart one or more units"
+    "condrestart:Restart one or more units if active"
+    "try-restart:Restart one or more units if active"
+    "reload-or-restart:Reload one or more units if possible, otherwise start or restart"
+    "force-reload:Reload one or more units if possible, otherwise restart if active"
+    "hibernate:Hibernate the system"
+    "hybrid-sleep:Hibernate and suspend the system"
+    "reload-or-try-restart:Reload one or more units if possible, otherwise restart if active"
+    "isolate:Start one unit and stop all others"
+    "kill:Send signal to processes of a unit"
+    "is-active:Check whether units are active"
+    "is-failed:Check whether units are failed"
+    "status:Show runtime status of one or more units"
+    "show:Show properties of one or more units/jobs or the manager"
+    "reset-failed:Reset failed state for all, one, or more units"
+    "load:Load one or more units"
+    "list-unit-files:List installed unit files"
+    "enable:Enable one or more unit files"
+    "disable:Disable one or more unit files"
+    "reenable:Reenable one or more unit files"
+    "preset:Enable/disable one or more unit files based on preset configuration"
+    "help:Show documentation for specified units"
+    "list-dependencies:Show unit dependency tree"
+    "mask:Mask one or more units"
+    "unmask:Unmask one or more units"
+    "link:Link one or more units files into the search path"
+    "is-enabled:Check whether unit files are enabled"
+    "list-jobs:List jobs"
+    "cancel:Cancel all, one, or more jobs"
+    "dump:Dump server status"
+    "snapshot:Create a snapshot"
+    "delete:Remove one or more snapshots"
+    "show-environment:Dump environment"
+    "set-environment:Set one or more environment variables"
+    "unset-environment:Unset one or more environment variables"
+    "daemon-reload:Reload systemd manager configuration"
+    "daemon-reexec:Reexecute systemd manager"
+    "default:Enter system default mode"
+    "rescue:Enter system rescue mode"
+    "emergency:Enter system emergency mode"
+    "halt:Shut down and halt the system"
+    "suspend:Suspend the system"
+    "poweroff:Shut down and power-off the system"
+    "reboot:Shut down and reboot the system"
+    "kexec:Shut down and reboot the system with kexec"
+    "exit:Ask for user instance termination"
+  )
+
+  if (( CURRENT == 1 )); then
+    _describe -t commands 'systemctl command' _systemctl_cmds || compadd "$@"
+  else
+    local curcontext="$curcontext"
+
+    cmd="${${_systemctl_cmds[(r)$words[1]:*]%%:*}}"
+    # Deal with any aliases
+    case $cmd in
+      condrestart) cmd="try-restart";;
+      force-reload) cmd="reload-or-try-restart";;
+    esac
+
+    if (( $#cmd )); then
+      curcontext="${curcontext%:*:*}:systemctl-${cmd}:"
+
+      local update_policy
+      zstyle -s ":completion:${curcontext}:" cache-policy update_policy
+      if [[ -z "$update_policy" ]]; then
+        zstyle ":completion:${curcontext}:" cache-policy _systemctl_caching_policy
+      fi
+
+      _call_function ret _systemctl_$cmd || _message 'no more arguments'
+    else
+      _message "unknown systemctl command: $words[1]"
+    fi
+    return ret
+  fi
+}
+
+__systemctl()
+{
+  local -a _modes
+  _modes=("--user" "--system")
+  systemctl ${words:*_modes} --full --no-legend --no-pager "$@"
+}
+
+
+# Fills the unit list
+_systemctl_all_units()
+{
+  if ( [[ ${+_sys_all_units} -eq 0 ]] || _cache_invalid SYS_ALL_UNITS ) &&
+    ! _retrieve_cache SYS_ALL_UNITS;
+  then
+    _sys_all_units=( $(__systemctl list-units --all | { while read a b; do echo " $a"; done; }) )
+    _store_cache SYS_ALL_UNITS _sys_all_units
+  fi
+}
+
+# Fills the unit list including all file units
+_systemctl_really_all_units()
+{
+  local -a all_unit_files;
+  local -a really_all_units;
+  if ( [[ ${+_sys_really_all_units} -eq 0 ]] || _cache_invalid SYS_REALLY_ALL_UNITS ) &&
+    ! _retrieve_cache SYS_REALLY_ALL_UNITS;
+  then
+    all_unit_files=( $(__systemctl list-unit-files | { while read a b; do echo " $a"; done; }) )
+    _systemctl_all_units
+    really_all_units=($_sys_all_units $all_unit_files)
+    _sys_really_all_units=(${(u)really_all_units})
+    _store_cache SYS_REALLY_ALL_UNITS _sys_really_all_units
+  fi
+}
+
+_filter_units_by_property() {
+  local property=$1 value=$2 ; shift ; shift
+  local -a units ; units=($*)
+  local prop unit
+  for ((i=1; $i <= ${#units[*]}; i++)); do
+    # FIXME: "Failed to issue method call: Unknown unit" errors are ignored for
+    # now (related to DBUS_ERROR_UNKNOWN_OBJECT). in the future, we need to
+    # revert to calling 'systemctl show' once for all units, which is way
+    # faster
+    unit=${units[i]}
+    prop=${(f)"$(_call_program units "$service show --no-pager --property="$property" ${unit} 2>/dev/null")"}
+    if [[ "${prop}" = "$property=$value" ]]; then
+      echo " ${unit}"
+    fi
+  done
+}
+
+_systemctl_active_units()  {_sys_active_units=(  $(__systemctl list-units          | { while read a b; do echo " $a"; done; }) )}
+_systemctl_inactive_units(){_sys_inactive_units=($(__systemctl list-units --all    | { while read a b c d; do [[ $c == "inactive" || $c == "failed" ]] && echo " $a"; done; }) )}
+_systemctl_failed_units()  {_sys_failed_units=(  $(__systemctl list-units --failed | { while read a b; do echo " $a"; done; }) )}
+_systemctl_enabled_units() {_sys_enabled_units=( $(__systemctl list-unit-files     | { while read a b; do [[ $b == "enabled" ]] && echo " $a"; done; }) )}
+_systemctl_disabled_units(){_sys_disabled_units=($(__systemctl list-unit-files     | { while read a b; do [[ $b == "disabled" ]] && echo " $a"; done; }) )}
+_systemctl_masked_units()  {_sys_masked_units=(  $(__systemctl list-unit-files     | { while read a b; do [[ $b == "masked" ]] && echo " $a"; done; }) )}
+
+# Completion functions for ALL_UNITS
+for fun in is-active is-failed is-enabled status show mask preset help list-dependencies ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_really_all_units
+    compadd "$@" -a - _sys_really_all_units
+  }
+done
+
+# Completion functions for ENABLED_UNITS
+for fun in disable reenable ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_enabled_units
+    _systemctl_disabled_units
+    compadd "$@" -a - _sys_enabled_units _sys_disabled_units
+  }
+done
+
+# Completion functions for DISABLED_UNITS
+(( $+functions[_systemctl_enable] )) || _systemctl_enable()
+{
+  _systemctl_disabled_units
+  compadd "$@" -a - _sys_disabled_units
+}
+
+# Completion functions for FAILED_UNITS
+(( $+functions[_systemctl_reset-failed] )) || _systemctl_reset-failed()
+{
+  _systemctl_failed_units
+  compadd "$@" -a - _sys_failed_units || _message "no failed unit found"
+}
+
+# Completion functions for STARTABLE_UNITS
+(( $+functions[_systemctl_start] )) || _systemctl_start()
+{
+  _systemctl_inactive_units
+  compadd "$@" -a - _sys_inactive_units
+}
+
+# Completion functions for STOPPABLE_UNITS
+for fun in stop kill try-restart condrestart ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_active_units
+    compadd "$@" - $( _filter_units_by_property CanStop yes \
+      ${_sys_active_units[*]} )
+  }
+done
+
+# Completion functions for ISOLATABLE_UNITS
+(( $+functions[_systemctl_isolate] )) || _systemctl_isolate()
+{
+  _systemctl_all_units
+  compadd "$@" - $( _filter_units_by_property AllowIsolate yes \
+    ${_sys_all_units[*]} )
+}
+
+# Completion functions for RELOADABLE_UNITS
+for fun in reload reload-or-try-restart force-reload ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_active_units
+    compadd "$@" - $( _filter_units_by_property CanReload yes \
+      ${_sys_active_units[*]} )
+  }
+done
+
+# Completion functions for RESTARTABLE_UNITS
+for fun in restart reload-or-restart ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    _systemctl_all_units
+    compadd "$@" - $( _filter_units_by_property CanStart yes \
+      ${_sys_all_units[*]} | while read line; do \
+      [[ "$line" =~ \.device$ ]] || echo " $line"; \
+      done )
+  }
+done
+
+# Completion functions for MASKED_UNITS
+(( $+functions[_systemctl_unmask] )) || _systemctl_unmask()
+{
+  _systemctl_masked_units
+  compadd "$@" -a - _sys_masked_units || _message "no masked unit found"
+}
+
+# Completion functions for JOBS
+(( $+functions[_systemctl_cancel] )) || _systemctl_cancel()
+{
+  compadd "$@" - $(__systemctl list-jobs \
+    | cut -d' ' -f1  2>/dev/null ) || _message "no job found"
+}
+
+# Completion functions for SNAPSHOTS
+(( $+functions[_systemctl_delete] )) || _systemctl_delete()
+{
+  compadd "$@" - $(__systemctl list-units --type snapshot --all \
+    | cut -d' ' -f1  2>/dev/null ) || _message "no snapshot found"
+}
+
+# Completion functions for ENVS
+for fun in set-environment unset-environment ; do
+  (( $+functions[_systemctl_$fun] )) || _systemctl_$fun()
+  {
+    local fun=$0 ; fun=${fun##_systemctl_}
+    local suf
+    if [[ "${fun}" = "set-environment" ]]; then
+      suf='-S='
+    fi
+
+    compadd "$@" ${suf} - $(systemctl show-environment \
+      | while read line; do echo " ${line%%\=}";done )
+  }
+done
+
+(( $+functions[_systemctl_link] )) || _systemctl_link() { _files }
+
+# no systemctl completion for:
+#    [STANDALONE]='daemon-reexec daemon-reload default dump
+#                  emergency exit halt kexec list-jobs list-units
+#                  list-unit-files poweroff reboot rescue show-environment'
+#         [NAME]='snapshot load'
+
+_systemctl_caching_policy()
+{
+  local _sysunits
+  local -a oldcache
+
+  # rebuild if cache is more than a day old
+  oldcache=( "$1"(mh+1) )
+  (( $#oldcache )) && return 0
+
+  _sysunits=($(__systemctl --all | cut -d' ' -f1))
+
+  if (( $#_sysunits )); then
+    for unit in $_sysunits; do
+      [[ "$unit" -nt "$1" ]] && return 0
+    done
+  fi
+
+  return 1
+}
+
+_hosts_or_user_at_host() {
+  _alternative \
+    'users-hosts:: _user_at_host' \
+    'hosts:: _hosts'
+}
+
+_outputmodes() {
+    local -a _output_opts
+    _output_opts=(short short-monotonic verbose export json json-pretty json-see cat)
+    _describe -t output 'output mode' _output_opts || compadd "$@"
+}
+
+_arguments -s \
+    {-h,--help}'[Show help]' \
+    '--version[Show package version]' \
+    {-t,--type=}'[List only units of a particular type]:unit type:(automount device mount path service snapshot socket swap target timer)' \
+    '--state=[Display units in the specifyied state]:unit state:(loaded failed active inactive not-found listening running waiting plugged mounted exited dead masked)' \
+    \*{-p,--property=}'[Show only properties by specific name]:unit property' \
+    {-a,--all}'[Show all units/properties, including dead/empty ones]' \
+    '--reverse[Show reverse dependencies]' \
+    '--after[Show units ordered after]' \
+    '--before[Show units ordered before]' \
+    '--failed[Show only failed units]' \
+    {-l,--full}"[Don't ellipsize unit names on output]" \
+    '--fail[When queueing a new job, fail if conflicting jobs are pending]' \
+    '--show-types[When showing sockets, show socket type]' \
+    '--irreversible[Mark transactions as irreversible]' \
+    '--ignore-dependencies[When queueing a new job, ignore all its dependencies]' \
+    {-i,--ignore-inhibitors}'[When executing a job, ignore jobs dependencies]' \
+    {-q,--quiet}'[Suppress output]' \
+    '--no-block[Do not wait until operation finished]' \
+    '--no-legend[Do not print a legend, i.e. the column headers and the footer with hints]' \
+    '--no-pager[Do not pipe output into a pager]' \
+    '--system[Connect to system manager]' \
+    '--user[Connect to user service manager]' \
+    "--no-wall[Don't send wall message before halt/power-off/reboot]" \
+    '--global[Enable/disable unit files globally]' \
+    "--no-reload[When enabling/disabling unit files, don't reload daemon configuration]" \
+    '--no-ask-password[Do not ask for system passwords]' \
+    '--kill-who=[Who to send signal to]:killwho:(main control all)' \
+    {-s,--signal=}'[Which signal to send]:signal:_signals' \
+    {-f,--force}'[When enabling unit files, override existing symlinks. When shutting down, execute action immediately]' \
+    '--root=[Enable unit files in the specified root directory]:directory:_directories' \
+    '--runtime[Enable unit files only temporarily until next reboot]' \
+    {-H,--host=}'[Show information for remote host]:userathost:_hosts_or_user_at_host' \
+    {-P,--privileged}'[Acquire privileges before execution]' \
+    {-n,--lines=}'[Journal entries to show]:number of entries' \
+    {-o,--output=}'[Change journal output mode]:modes:_outputmodes' \
+    '--plain[When used with list-dependencies, print output as a list]' \
+    '*::systemctl command:_systemctl_command'