mirror of
https://github.com/octoleo/restic.git
synced 2024-12-21 02:19:04 +00:00
236 lines
9.5 KiB
Fish
236 lines
9.5 KiB
Fish
# fish completion for restic -*- shell-script -*-
|
|
|
|
function __restic_debug
|
|
set -l file "$BASH_COMP_DEBUG_FILE"
|
|
if test -n "$file"
|
|
echo "$argv" >> $file
|
|
end
|
|
end
|
|
|
|
function __restic_perform_completion
|
|
__restic_debug "Starting __restic_perform_completion"
|
|
|
|
# Extract all args except the last one
|
|
set -l args (commandline -opc)
|
|
# Extract the last arg and escape it in case it is a space
|
|
set -l lastArg (string escape -- (commandline -ct))
|
|
|
|
__restic_debug "args: $args"
|
|
__restic_debug "last arg: $lastArg"
|
|
|
|
# Disable ActiveHelp which is not supported for fish shell
|
|
set -l requestComp "RESTIC_ACTIVE_HELP=0 $args[1] __complete $args[2..-1] $lastArg"
|
|
|
|
__restic_debug "Calling $requestComp"
|
|
set -l results (eval $requestComp 2> /dev/null)
|
|
|
|
# Some programs may output extra empty lines after the directive.
|
|
# Let's ignore them or else it will break completion.
|
|
# Ref: https://github.com/spf13/cobra/issues/1279
|
|
for line in $results[-1..1]
|
|
if test (string trim -- $line) = ""
|
|
# Found an empty line, remove it
|
|
set results $results[1..-2]
|
|
else
|
|
# Found non-empty line, we have our proper output
|
|
break
|
|
end
|
|
end
|
|
|
|
set -l comps $results[1..-2]
|
|
set -l directiveLine $results[-1]
|
|
|
|
# For Fish, when completing a flag with an = (e.g., <program> -n=<TAB>)
|
|
# completions must be prefixed with the flag
|
|
set -l flagPrefix (string match -r -- '-.*=' "$lastArg")
|
|
|
|
__restic_debug "Comps: $comps"
|
|
__restic_debug "DirectiveLine: $directiveLine"
|
|
__restic_debug "flagPrefix: $flagPrefix"
|
|
|
|
for comp in $comps
|
|
printf "%s%s\n" "$flagPrefix" "$comp"
|
|
end
|
|
|
|
printf "%s\n" "$directiveLine"
|
|
end
|
|
|
|
# this function limits calls to __restic_perform_completion, by caching the result behind $__restic_perform_completion_once_result
|
|
function __restic_perform_completion_once
|
|
__restic_debug "Starting __restic_perform_completion_once"
|
|
|
|
if test -n "$__restic_perform_completion_once_result"
|
|
__restic_debug "Seems like a valid result already exists, skipping __restic_perform_completion"
|
|
return 0
|
|
end
|
|
|
|
set --global __restic_perform_completion_once_result (__restic_perform_completion)
|
|
if test -z "$__restic_perform_completion_once_result"
|
|
__restic_debug "No completions, probably due to a failure"
|
|
return 1
|
|
end
|
|
|
|
__restic_debug "Performed completions and set __restic_perform_completion_once_result"
|
|
return 0
|
|
end
|
|
|
|
# this function is used to clear the $__restic_perform_completion_once_result variable after completions are run
|
|
function __restic_clear_perform_completion_once_result
|
|
__restic_debug ""
|
|
__restic_debug "========= clearing previously set __restic_perform_completion_once_result variable =========="
|
|
set --erase __restic_perform_completion_once_result
|
|
__restic_debug "Successfully erased the variable __restic_perform_completion_once_result"
|
|
end
|
|
|
|
function __restic_requires_order_preservation
|
|
__restic_debug ""
|
|
__restic_debug "========= checking if order preservation is required =========="
|
|
|
|
__restic_perform_completion_once
|
|
if test -z "$__restic_perform_completion_once_result"
|
|
__restic_debug "Error determining if order preservation is required"
|
|
return 1
|
|
end
|
|
|
|
set -l directive (string sub --start 2 $__restic_perform_completion_once_result[-1])
|
|
__restic_debug "Directive is: $directive"
|
|
|
|
set -l shellCompDirectiveKeepOrder 32
|
|
set -l keeporder (math (math --scale 0 $directive / $shellCompDirectiveKeepOrder) % 2)
|
|
__restic_debug "Keeporder is: $keeporder"
|
|
|
|
if test $keeporder -ne 0
|
|
__restic_debug "This does require order preservation"
|
|
return 0
|
|
end
|
|
|
|
__restic_debug "This doesn't require order preservation"
|
|
return 1
|
|
end
|
|
|
|
|
|
# This function does two things:
|
|
# - Obtain the completions and store them in the global __restic_comp_results
|
|
# - Return false if file completion should be performed
|
|
function __restic_prepare_completions
|
|
__restic_debug ""
|
|
__restic_debug "========= starting completion logic =========="
|
|
|
|
# Start fresh
|
|
set --erase __restic_comp_results
|
|
|
|
__restic_perform_completion_once
|
|
__restic_debug "Completion results: $__restic_perform_completion_once_result"
|
|
|
|
if test -z "$__restic_perform_completion_once_result"
|
|
__restic_debug "No completion, probably due to a failure"
|
|
# Might as well do file completion, in case it helps
|
|
return 1
|
|
end
|
|
|
|
set -l directive (string sub --start 2 $__restic_perform_completion_once_result[-1])
|
|
set --global __restic_comp_results $__restic_perform_completion_once_result[1..-2]
|
|
|
|
__restic_debug "Completions are: $__restic_comp_results"
|
|
__restic_debug "Directive is: $directive"
|
|
|
|
set -l shellCompDirectiveError 1
|
|
set -l shellCompDirectiveNoSpace 2
|
|
set -l shellCompDirectiveNoFileComp 4
|
|
set -l shellCompDirectiveFilterFileExt 8
|
|
set -l shellCompDirectiveFilterDirs 16
|
|
|
|
if test -z "$directive"
|
|
set directive 0
|
|
end
|
|
|
|
set -l compErr (math (math --scale 0 $directive / $shellCompDirectiveError) % 2)
|
|
if test $compErr -eq 1
|
|
__restic_debug "Received error directive: aborting."
|
|
# Might as well do file completion, in case it helps
|
|
return 1
|
|
end
|
|
|
|
set -l filefilter (math (math --scale 0 $directive / $shellCompDirectiveFilterFileExt) % 2)
|
|
set -l dirfilter (math (math --scale 0 $directive / $shellCompDirectiveFilterDirs) % 2)
|
|
if test $filefilter -eq 1; or test $dirfilter -eq 1
|
|
__restic_debug "File extension filtering or directory filtering not supported"
|
|
# Do full file completion instead
|
|
return 1
|
|
end
|
|
|
|
set -l nospace (math (math --scale 0 $directive / $shellCompDirectiveNoSpace) % 2)
|
|
set -l nofiles (math (math --scale 0 $directive / $shellCompDirectiveNoFileComp) % 2)
|
|
|
|
__restic_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 -l prefix (commandline -t | string escape --style=regex)
|
|
__restic_debug "prefix: $prefix"
|
|
|
|
set -l completions (string match -r -- "^$prefix.*" $__restic_comp_results)
|
|
set --global __restic_comp_results $completions
|
|
__restic_debug "Filtered completions are: $__restic_comp_results"
|
|
|
|
# Important not to quote the variable for count to work
|
|
set -l numComps (count $__restic_comp_results)
|
|
__restic_debug "numComps: $numComps"
|
|
|
|
if test $numComps -eq 1; and test $nospace -ne 0
|
|
# We must first split on \t to get rid of the descriptions to be
|
|
# able to check what the actual completion will be.
|
|
# We don't need descriptions anyway since there is only a single
|
|
# real completion which the shell will expand immediately.
|
|
set -l split (string split --max 1 \t $__restic_comp_results[1])
|
|
|
|
# Fish won't add a space if the completion ends with any
|
|
# of the following characters: @=/:.,
|
|
set -l lastChar (string sub -s -1 -- $split)
|
|
if not string match -r -q "[@=/:.,]" -- "$lastChar"
|
|
# In other cases, to support the "nospace" directive we trick the shell
|
|
# by outputting an extra, longer completion.
|
|
__restic_debug "Adding second completion to perform nospace directive"
|
|
set --global __restic_comp_results $split[1] $split[1].
|
|
__restic_debug "Completions are now: $__restic_comp_results"
|
|
end
|
|
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
|
|
__restic_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.
|
|
# Only do this if the program can be found, or else fish may print some errors; besides,
|
|
# the existing completions will only be loaded if the program can be found.
|
|
if type -q "restic"
|
|
# The space after the program name is essential to trigger completion for the program
|
|
# and not completion of the program name itself.
|
|
# Also, we use '> /dev/null 2>&1' since '&>' is not supported in older versions of fish.
|
|
complete --do-complete "restic " > /dev/null 2>&1
|
|
end
|
|
|
|
# Remove any pre-existing completions for the program since we will be handling all of them.
|
|
complete -c restic -e
|
|
|
|
# this will get called after the two calls below and clear the $__restic_perform_completion_once_result global
|
|
complete -c restic -n '__restic_clear_perform_completion_once_result'
|
|
# The call to __restic_prepare_completions will setup __restic_comp_results
|
|
# which provides the program's completion choices.
|
|
# If this doesn't require order preservation, we don't use the -k flag
|
|
complete -c restic -n 'not __restic_requires_order_preservation && __restic_prepare_completions' -f -a '$__restic_comp_results'
|
|
# otherwise we use the -k flag
|
|
complete -k -c restic -n '__restic_requires_order_preservation && __restic_prepare_completions' -f -a '$__restic_comp_results'
|