mirror of
https://github.com/octoleo/restic.git
synced 2024-11-30 08:44:02 +00:00
246 lines
9.6 KiB
PowerShell
246 lines
9.6 KiB
PowerShell
# powershell completion for restic -*- shell-script -*-
|
|
|
|
function __restic_debug {
|
|
if ($env:BASH_COMP_DEBUG_FILE) {
|
|
"$args" | Out-File -Append -FilePath "$env:BASH_COMP_DEBUG_FILE"
|
|
}
|
|
}
|
|
|
|
filter __restic_escapeStringWithSpecialChars {
|
|
$_ -replace '\s|#|@|\$|;|,|''|\{|\}|\(|\)|"|`|\||<|>|&','`$&'
|
|
}
|
|
|
|
[scriptblock]$__resticCompleterBlock = {
|
|
param(
|
|
$WordToComplete,
|
|
$CommandAst,
|
|
$CursorPosition
|
|
)
|
|
|
|
# Get the current command line and convert into a string
|
|
$Command = $CommandAst.CommandElements
|
|
$Command = "$Command"
|
|
|
|
__restic_debug ""
|
|
__restic_debug "========= starting completion logic =========="
|
|
__restic_debug "WordToComplete: $WordToComplete Command: $Command CursorPosition: $CursorPosition"
|
|
|
|
# The user could have moved the cursor backwards on the command-line.
|
|
# We need to trigger completion from the $CursorPosition location, so we need
|
|
# to truncate the command-line ($Command) up to the $CursorPosition location.
|
|
# Make sure the $Command is longer then the $CursorPosition before we truncate.
|
|
# This happens because the $Command does not include the last space.
|
|
if ($Command.Length -gt $CursorPosition) {
|
|
$Command=$Command.Substring(0,$CursorPosition)
|
|
}
|
|
__restic_debug "Truncated command: $Command"
|
|
|
|
$ShellCompDirectiveError=1
|
|
$ShellCompDirectiveNoSpace=2
|
|
$ShellCompDirectiveNoFileComp=4
|
|
$ShellCompDirectiveFilterFileExt=8
|
|
$ShellCompDirectiveFilterDirs=16
|
|
$ShellCompDirectiveKeepOrder=32
|
|
|
|
# Prepare the command to request completions for the program.
|
|
# Split the command at the first space to separate the program and arguments.
|
|
$Program,$Arguments = $Command.Split(" ",2)
|
|
|
|
$RequestComp="$Program __completeNoDesc $Arguments"
|
|
__restic_debug "RequestComp: $RequestComp"
|
|
|
|
# we cannot use $WordToComplete because it
|
|
# has the wrong values if the cursor was moved
|
|
# so use the last argument
|
|
if ($WordToComplete -ne "" ) {
|
|
$WordToComplete = $Arguments.Split(" ")[-1]
|
|
}
|
|
__restic_debug "New WordToComplete: $WordToComplete"
|
|
|
|
|
|
# Check for flag with equal sign
|
|
$IsEqualFlag = ($WordToComplete -Like "--*=*" )
|
|
if ( $IsEqualFlag ) {
|
|
__restic_debug "Completing equal sign flag"
|
|
# Remove the flag part
|
|
$Flag,$WordToComplete = $WordToComplete.Split("=",2)
|
|
}
|
|
|
|
if ( $WordToComplete -eq "" -And ( -Not $IsEqualFlag )) {
|
|
# If the last parameter is complete (there is a space following it)
|
|
# We add an extra empty parameter so we can indicate this to the go method.
|
|
__restic_debug "Adding extra empty parameter"
|
|
# PowerShell 7.2+ changed the way how the arguments are passed to executables,
|
|
# so for pre-7.2 or when Legacy argument passing is enabled we need to use
|
|
# `"`" to pass an empty argument, a "" or '' does not work!!!
|
|
if ($PSVersionTable.PsVersion -lt [version]'7.2.0' -or
|
|
($PSVersionTable.PsVersion -lt [version]'7.3.0' -and -not [ExperimentalFeature]::IsEnabled("PSNativeCommandArgumentPassing")) -or
|
|
(($PSVersionTable.PsVersion -ge [version]'7.3.0' -or [ExperimentalFeature]::IsEnabled("PSNativeCommandArgumentPassing")) -and
|
|
$PSNativeCommandArgumentPassing -eq 'Legacy')) {
|
|
$RequestComp="$RequestComp" + ' `"`"'
|
|
} else {
|
|
$RequestComp="$RequestComp" + ' ""'
|
|
}
|
|
}
|
|
|
|
__restic_debug "Calling $RequestComp"
|
|
# First disable ActiveHelp which is not supported for Powershell
|
|
$env:RESTIC_ACTIVE_HELP=0
|
|
|
|
#call the command store the output in $out and redirect stderr and stdout to null
|
|
# $Out is an array contains each line per element
|
|
Invoke-Expression -OutVariable out "$RequestComp" 2>&1 | Out-Null
|
|
|
|
# get directive from last line
|
|
[int]$Directive = $Out[-1].TrimStart(':')
|
|
if ($Directive -eq "") {
|
|
# There is no directive specified
|
|
$Directive = 0
|
|
}
|
|
__restic_debug "The completion directive is: $Directive"
|
|
|
|
# remove directive (last element) from out
|
|
$Out = $Out | Where-Object { $_ -ne $Out[-1] }
|
|
__restic_debug "The completions are: $Out"
|
|
|
|
if (($Directive -band $ShellCompDirectiveError) -ne 0 ) {
|
|
# Error code. No completion.
|
|
__restic_debug "Received error from custom completion go code"
|
|
return
|
|
}
|
|
|
|
$Longest = 0
|
|
[Array]$Values = $Out | ForEach-Object {
|
|
#Split the output in name and description
|
|
$Name, $Description = $_.Split("`t",2)
|
|
__restic_debug "Name: $Name Description: $Description"
|
|
|
|
# Look for the longest completion so that we can format things nicely
|
|
if ($Longest -lt $Name.Length) {
|
|
$Longest = $Name.Length
|
|
}
|
|
|
|
# Set the description to a one space string if there is none set.
|
|
# This is needed because the CompletionResult does not accept an empty string as argument
|
|
if (-Not $Description) {
|
|
$Description = " "
|
|
}
|
|
@{Name="$Name";Description="$Description"}
|
|
}
|
|
|
|
|
|
$Space = " "
|
|
if (($Directive -band $ShellCompDirectiveNoSpace) -ne 0 ) {
|
|
# remove the space here
|
|
__restic_debug "ShellCompDirectiveNoSpace is called"
|
|
$Space = ""
|
|
}
|
|
|
|
if ((($Directive -band $ShellCompDirectiveFilterFileExt) -ne 0 ) -or
|
|
(($Directive -band $ShellCompDirectiveFilterDirs) -ne 0 )) {
|
|
__restic_debug "ShellCompDirectiveFilterFileExt ShellCompDirectiveFilterDirs are not supported"
|
|
|
|
# return here to prevent the completion of the extensions
|
|
return
|
|
}
|
|
|
|
$Values = $Values | Where-Object {
|
|
# filter the result
|
|
$_.Name -like "$WordToComplete*"
|
|
|
|
# Join the flag back if we have an equal sign flag
|
|
if ( $IsEqualFlag ) {
|
|
__restic_debug "Join the equal sign flag back to the completion value"
|
|
$_.Name = $Flag + "=" + $_.Name
|
|
}
|
|
}
|
|
|
|
# we sort the values in ascending order by name if keep order isn't passed
|
|
if (($Directive -band $ShellCompDirectiveKeepOrder) -eq 0 ) {
|
|
$Values = $Values | Sort-Object -Property Name
|
|
}
|
|
|
|
if (($Directive -band $ShellCompDirectiveNoFileComp) -ne 0 ) {
|
|
__restic_debug "ShellCompDirectiveNoFileComp is called"
|
|
|
|
if ($Values.Length -eq 0) {
|
|
# Just print an empty string here so the
|
|
# shell does not start to complete paths.
|
|
# We cannot use CompletionResult here because
|
|
# it does not accept an empty string as argument.
|
|
""
|
|
return
|
|
}
|
|
}
|
|
|
|
# Get the current mode
|
|
$Mode = (Get-PSReadLineKeyHandler | Where-Object {$_.Key -eq "Tab" }).Function
|
|
__restic_debug "Mode: $Mode"
|
|
|
|
$Values | ForEach-Object {
|
|
|
|
# store temporary because switch will overwrite $_
|
|
$comp = $_
|
|
|
|
# PowerShell supports three different completion modes
|
|
# - TabCompleteNext (default windows style - on each key press the next option is displayed)
|
|
# - Complete (works like bash)
|
|
# - MenuComplete (works like zsh)
|
|
# You set the mode with Set-PSReadLineKeyHandler -Key Tab -Function <mode>
|
|
|
|
# CompletionResult Arguments:
|
|
# 1) CompletionText text to be used as the auto completion result
|
|
# 2) ListItemText text to be displayed in the suggestion list
|
|
# 3) ResultType type of completion result
|
|
# 4) ToolTip text for the tooltip with details about the object
|
|
|
|
switch ($Mode) {
|
|
|
|
# bash like
|
|
"Complete" {
|
|
|
|
if ($Values.Length -eq 1) {
|
|
__restic_debug "Only one completion left"
|
|
|
|
# insert space after value
|
|
[System.Management.Automation.CompletionResult]::new($($comp.Name | __restic_escapeStringWithSpecialChars) + $Space, "$($comp.Name)", 'ParameterValue', "$($comp.Description)")
|
|
|
|
} else {
|
|
# Add the proper number of spaces to align the descriptions
|
|
while($comp.Name.Length -lt $Longest) {
|
|
$comp.Name = $comp.Name + " "
|
|
}
|
|
|
|
# Check for empty description and only add parentheses if needed
|
|
if ($($comp.Description) -eq " " ) {
|
|
$Description = ""
|
|
} else {
|
|
$Description = " ($($comp.Description))"
|
|
}
|
|
|
|
[System.Management.Automation.CompletionResult]::new("$($comp.Name)$Description", "$($comp.Name)$Description", 'ParameterValue', "$($comp.Description)")
|
|
}
|
|
}
|
|
|
|
# zsh like
|
|
"MenuComplete" {
|
|
# insert space after value
|
|
# MenuComplete will automatically show the ToolTip of
|
|
# the highlighted value at the bottom of the suggestions.
|
|
[System.Management.Automation.CompletionResult]::new($($comp.Name | __restic_escapeStringWithSpecialChars) + $Space, "$($comp.Name)", 'ParameterValue', "$($comp.Description)")
|
|
}
|
|
|
|
# TabCompleteNext and in case we get something unknown
|
|
Default {
|
|
# Like MenuComplete but we don't want to add a space here because
|
|
# the user need to press space anyway to get the completion.
|
|
# Description will not be shown because that's not possible with TabCompleteNext
|
|
[System.Management.Automation.CompletionResult]::new($($comp.Name | __restic_escapeStringWithSpecialChars), "$($comp.Name)", 'ParameterValue', "$($comp.Description)")
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
Register-ArgumentCompleter -CommandName 'restic' -ScriptBlock $__resticCompleterBlock
|