mirror of
https://github.com/fish-shell/fish-shell
synced 2024-12-27 05:13:10 +00:00
8dc74de92e
This is quite ugly because the syntax is ugly, the documentation both under- and overspecified at the same time (a BNF that isn't...) and it has a lot of functionality. But the completion works half-decent for `ip address`, so let's ship it.
344 lines
11 KiB
Fish
344 lines
11 KiB
Fish
# ip(8) completion for fish
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# The difficulty here is that ip allows abbreviating options, so we need to complete "ip a" like "ip address", but not "ip m" like "ip mroute"
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# Also the manpage and even the grammar it accepts is utter shite (options can only be before commands, some things are only in the BNF, others only in the text)
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# It also quite likes the word "dev", even though it needs it less than the BNF specifies
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set -l ip_commands link address addrlabel route rule neigh ntable tunnel tuntap maddr mroute mrule monitor xfrm netns l2tp tcp_metrics
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set -l ip_addr a ad add addr addre addres address
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set -l ip_link l li lin link
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set -l ip_all_commands $ip_commands $ip_addr $ip_link
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function __fish_ip_commandwords
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set -l skip 0
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set -l cmd (commandline -opc)
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# HACK: Handle and/or/not specially because they have hardcoded completion behavior
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# that doesn't remove them from the commandline
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if contains -- $cmd[1] and or not
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set -e cmd[1]
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end
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# Remove the first word because it's "ip" or an alias for it
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set -e cmd[1]
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set -l have_command 0
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for word in $cmd
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switch $word
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# Normalize the commands to their full form - `ip a` is `ip address`
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# This can't be just an unambiguity check because there's also `ip addrlabel`
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case a ad add addr addre addres address
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# "addr add" is a thing, so we can only echo "address" if it's actually the command
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if test $have_command = 0
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set have_command 1
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echo address
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else
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echo $word
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end
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case l li lin link
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if test $have_command = 0
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set have_command 1
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echo link
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else
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echo $word
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end
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case "addrl*"
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if test $have_command = 0
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set have_command 1
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echo addrlabel
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else
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echo $word
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end
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case r ro rou rout route
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if test $have_command = 0
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set have_command 1
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echo route
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else
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echo $word
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end
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case "ru*"
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if test $have_command = 0
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set have_command 1
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echo rule
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else
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echo $word
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end
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case n ne nei neig neigh
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if test $have_command = 0
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set have_command 1
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echo neigh
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else
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echo $word
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end
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case nt
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if test $have_command = 0
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set have_command 1
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echo ntable
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else
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echo $word
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end
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case t tu tun tunn tunne tunnel
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if test $have_command = 0
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set have_command 1
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echo tunnel
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else
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echo $word
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end
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case "tunt*"
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if test $have_command = 0
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set have_command 1
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echo tuntap
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else
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echo $word
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end
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case m ma mad madd maddr maddre maddres maddress
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if test $have_command = 0
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set have_command 1
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echo maddress
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else
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echo $word
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end
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case mr "mro*"
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if test $have_command = 0
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set have_command 1
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echo mroute
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else
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echo $word
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end
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case "mru*"
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if test $have_command = 0
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set have_command 1
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echo mrule
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else
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echo $word
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end
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case "mo*"
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if test $have_command = 0
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set have_command 1
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echo monitor
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else
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echo $word
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end
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case "x*"
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if test $have_command = 0
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set have_command 1
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echo xfrm
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else
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echo $word
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end
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case "net*"
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if test $have_command = 0
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set have_command 1
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echo netns
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else
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echo $word
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end
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case "l*"
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if test $have_command = 0
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set have_command 1
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echo l2tp
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else
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echo $word
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end
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case "tc*"
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if test $have_command = 0
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set have_command 1
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echo tcp_metrics
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else
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echo $word
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end
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case "to*"
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if test $have_command = 0
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set have_command 1
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echo token
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else
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echo $word
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end
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case '-n' '-netns' '--netns'
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if test $have_command = 0
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set skip 1
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else
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echo $word
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end
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case '-*'
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test $have_command = 0; and continue
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echo $word
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case '*'
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if test $skip = 1
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set skip 0
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continue
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end
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echo $word
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end
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end
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# Print an empty line if the current token is empty, so we know that the one before it is finished
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# TODO: For some reason it is necessary to always print the current token - why doesn't the above loop catch it?
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set -l token (commandline -ct)
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echo $token
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end
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function __fish_ip_device
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ip -o link show | while read a b c
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printf '%s\t%s\n' (string replace ':' '' -- $b) "Device"
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end
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end
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function __fish_ip_scope
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if test -r /etc/iproute2/rt_scopes
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string replace -r '#.*' '' < /etc/iproute2/rt_scopes \
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| string match -v '^\s*$' \
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| string replace -r '(\S+)\s*(\S+)' '$1\t$2\n$2\t$1' \
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| string match -rv '^(global|link|host).*' # Ignore scopes with better descriptions
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end
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# Predefined scopes
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printf '%s\t%s\n' global "Address is globally valid" \
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link "Address is link-local, only valid on this device" \
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host "Address is only valid on this host"
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end
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function __fish_complete_ip
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set -l cmd (__fish_ip_commandwords)
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set -l count (count $cmd)
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switch "$cmd[1]"
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case address
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# We're still _on_ the second word, which is the subcommand
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if not set -q cmd[3]
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printf '%s\t%s\n' add "Add new protocol address" \
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delete "Delete protocol address" \
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show "Look at protocol addresses" \
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flush "Flush protocol addresses"
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else
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switch $cmd[2]
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# Change and replace are undocumented (apart from mentions in the BNF)
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case add change replace
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switch $count
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case 3
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# __fish_ip_complete_ip
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case '*'
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switch $cmd[-2]
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case dev
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__fish_ip_device
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case scope
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__fish_ip_scope
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# TODO: Figure out how to complete these
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case label
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# Prefix
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case local peer broadcast
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# Address
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case valid_lft preferred_lft
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# Lifetime
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case '*'
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printf '%s\t%s\n' forever "Keep address valid forever" \
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home "(Ipv6 only) Designate address as home adress" \
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nodad "(Ipv6 only) Don't perform duplicate address detection" \
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dev "Add address to specified device" \
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scope "Set scope of address" \
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label "Tag address with label"
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end
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end
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case delete
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switch $count
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case 3
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ip -o addr show | while read a b c d e
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echo $d
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end
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case 4
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# A dev argument is mandatory, but contrary to the BNF, other things (like "scope") are also valid here
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# And yes, unlike e.g. show, this _needs_ the "dev" before the device
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# Otherwise it barfs and says "??? prefix is expected"
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# Anyway, try to steer the user towards supplying a device
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echo dev
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case 5
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switch $cmd[-2]
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case dev
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ip -o addr show | string match "*$cmd[3]*" | while read a b c
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echo $b
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end
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# TODO: Moar
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end
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case show save flush # These take the same args
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switch $cmd[-2]
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case dev
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__fish_ip_device
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case scope
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__fish_ip_scope
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case to
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# Prefix
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case label
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# Label-pattern
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case '*'
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printf '%s\t%s\n' up "Only active devices" \
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dev "Limit to a certain device" \
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scope "Limit scope" \
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to "Limit prefix" \
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label "Limit by label" \
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dynamic "(Ipv6 only) Limit to dynamic addresses" \
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permanent "(Ipv6 only) Limit to permanent addresses"
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__fish_ip_device
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# TODO: Moar
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end
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end
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end
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end
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case link
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if not set -q cmd[3]
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printf '%s\t%s\n' add "Add virtual link" \
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delete "Delete virtual link" \
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set "Change device attributes" \
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show "Display device attributes" \
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help "Display help"
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else
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# TODO: Add moar
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switch $cmd[2]
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case add
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switch $cmd[-2]
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case link
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__fish_ip_device
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case name
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case type
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printf '%s\t%s\n' \
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macvtap "Virtual interface based on link layer address (MAC) and TAP." \
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vcan "Virtual Controller Area Network interface" \
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veth "Virtual ethernet interface" \
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vlan "802.1q tagged virtual LAN interface" \
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vxlan "Virtual eXtended LAN" \
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ip6tnl "Virtual tunnel interface IPv4|IPv6 over IPv6" \
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ipip "Virtual tunnel interface IPv4 over IPv4" \
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sit "Virtual tunnel interface IPv6 over IPv4" \
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gre "Virtual tunnel interface GRE over IPv4" \
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gretap "Virtual L2 tunnel interface GRE over IPv4" \
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ip6gre "Virtual tunnel interface GRE over IPv6" \
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ip6gretap "Virtual L2 tunnel interface GRE over IPv6" \
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vti "Virtual tunnel interface" \
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nlmon "Netlink monitoring device" \
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ipvlan "Interface for L3 (IPv6/IPv4) based VLANs" \
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lowpan "Interface for 6LoWPAN (IPv6) over IEEE 802.15.4 / Bluetooth" \
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geneve "GEneric NEtwork Virtualization Encapsulation"
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end
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case delete
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case set
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case show
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case help
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end
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end
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end
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end
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complete -f -c ip
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complete -f -c ip -a '(__fish_complete_ip)'
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complete -f -c ip -n "not __fish_seen_subcommand_from $ip_all_commands" -a "$ip_commands"
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# Yes, ip only takes options before "objects"
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complete -c ip -s b -l batch -d "Read commands from file or stdin" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -l force -d "Don't terminate on errors in batch mode" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -s V -l Version -d "Print the version" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s s -l stats -d "Output more information" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s d -l details -d "Output more detailed information" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s l -l loops -d "Specify maximum number of loops for 'ip addr flush'" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s f -l family -d "The protocol family to use" -a "inet inet6 bridge ipx dnet link any" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s 4 -d "Short for --family inet" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s 6 -d "Short for --family inet6" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s B -d "Short for --family bridge" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s D -d "Short for --family decnet" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s I -d "Short for --family ipx" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s O -d "Short for --family link" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s o -l oneline -d "Output on one line" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s r -l resolve -d "Resolve names and print them instead of addresses" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s n -l net -l netns -d "Use specified network namespace" -n "not __fish_seen_subcommand_from $ip_commands"
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complete -c ip -f -s a -l all -d "Execute command for all objects" -n "not __fish_seen_subcommand_from $ip_commands"
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