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|
# fish completion for podman -*- shell-script -*-
function __podman_debug
set file "$BASH_COMP_DEBUG_FILE"
if test -n "$file"
echo "$argv" >> $file
end
end
function __podman_perform_completion
__podman_debug "Starting __podman_perform_completion"
set args (string split -- " " (string trim -l (commandline -c)))
set lastArg "$args[-1]"
__podman_debug "args: $args"
__podman_debug "last arg: $lastArg"
set emptyArg ""
if test -z "$lastArg"
__podman_debug "Setting emptyArg"
set emptyArg \"\"
end
__podman_debug "emptyArg: $emptyArg"
set requestComp "$args[1] __complete $args[2..-1] $emptyArg"
__podman_debug "Calling $requestComp"
# Call the command as a sub-shell so that we can redirect any errors
# For example, if $requestComp has an unmatched quote
# https://github.com/spf13/cobra/issues/1214
set results (fish -c "$requestComp" 2> /dev/null)
set comps $results[1..-2]
set directiveLine $results[-1]
# For Fish, when completing a flag with an = (e.g., <program> -n=<TAB>)
# completions must be prefixed with the flag
set flagPrefix (string match -r -- '-.*=' "$lastArg")
__podman_debug "Comps: $comps"
__podman_debug "DirectiveLine: $directiveLine"
__podman_debug "flagPrefix: $flagPrefix"
for comp in $comps
printf "%s%s\n" "$flagPrefix" "$comp"
end
printf "%s\n" "$directiveLine"
end
# This function does two things:
# - Obtain the completions and store them in the global __podman_comp_results
# - Return false if file completion should be performed
function __podman_prepare_completions
__podman_debug ""
__podman_debug "========= starting completion logic =========="
# Start fresh
set --erase __podman_comp_results
set results (__podman_perform_completion)
__podman_debug "Completion results: $results"
if test -z "$results"
__podman_debug "No completion, probably due to a failure"
# Might as well do file completion, in case it helps
return 1
end
set directive (string sub --start 2 $results[-1])
set --global __podman_comp_results $results[1..-2]
__podman_debug "Completions are: $__podman_comp_results"
__podman_debug "Directive is: $directive"
set shellCompDirectiveError 1
set shellCompDirectiveNoSpace 2
set shellCompDirectiveNoFileComp 4
set shellCompDirectiveFilterFileExt 8
set shellCompDirectiveFilterDirs 16
if test -z "$directive"
set directive 0
end
set compErr (math (math --scale 0 $directive / $shellCompDirectiveError) % 2)
if test $compErr -eq 1
__podman_debug "Received error directive: aborting."
# Might as well do file completion, in case it helps
return 1
end
set filefilter (math (math --scale 0 $directive / $shellCompDirectiveFilterFileExt) % 2)
set dirfilter (math (math --scale 0 $directive / $shellCompDirectiveFilterDirs) % 2)
if test $filefilter -eq 1; or test $dirfilter -eq 1
__podman_debug "File extension filtering or directory filtering not supported"
# Do full file completion instead
return 1
end
set nospace (math (math --scale 0 $directive / $shellCompDirectiveNoSpace) % 2)
set nofiles (math (math --scale 0 $directive / $shellCompDirectiveNoFileComp) % 2)
__podman_debug "nospace: $nospace, nofiles: $nofiles"
# If we want to prevent a space, or if file completion is NOT disabled,
# we need to count the number of valid completions.
# To do so, we will filter on prefix as the completions we have received
# may not already be filtered so as to allow fish to match on different
# criteria than the prefix.
if test $nospace -ne 0; or test $nofiles -eq 0
set prefix (commandline -t)
__podman_debug "prefix: $prefix"
set completions
for comp in $__podman_comp_results
if test (string match -e -r -- "^$prefix" "$comp")
set -a completions $comp
end
end
set --global __podman_comp_results $completions
__podman_debug "Filtered completions are: $__podman_comp_results"
# Important not to quote the variable for count to work
set numComps (count $__podman_comp_results)
__podman_debug "numComps: $numComps"
if test $numComps -eq 1; and test $nospace -ne 0
# To support the "nospace" directive we trick the shell
# by outputting an extra, longer completion.
# We must first split on \t to get rid of the descriptions because
# the extra character we add to the fake second completion must be
# before the description. We don't need descriptions anyway since
# there is only a single real completion which the shell will expand
# immediately.
__podman_debug "Adding second completion to perform nospace directive"
set split (string split --max 1 \t $__podman_comp_results[1])
set --global __podman_comp_results $split[1] $split[1].
__podman_debug "Completions are now: $__podman_comp_results"
end
if test $numComps -eq 0; and test $nofiles -eq 0
# To be consistent with bash and zsh, we only trigger file
# completion when there are no other completions
__podman_debug "Requesting file completion"
return 1
end
end
return 0
end
# Since Fish completions are only loaded once the user triggers them, we trigger them ourselves
# so we can properly delete any completions provided by another script.
# The space after the program name is essential to trigger completion for the program
# and not completion of the program name itself.
complete --do-complete "podman " > /dev/null 2>&1
# Using '> /dev/null 2>&1' since '&>' is not supported in older versions of fish.
# Remove any pre-existing completions for the program since we will be handling all of them.
complete -c podman -e
# The call to __podman_prepare_completions will setup __podman_comp_results
# which provides the program's completion choices.
complete -c podman -n '__podman_prepare_completions' -f -a '$__podman_comp_results'
# This file is generated with "podman completion"; see: podman-completion(1)
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