mpv/etc/powershell-completion.ps1

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#
# This file is part of mpv.
#
# mpv is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# mpv is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with mpv. If not, see <http://www.gnu.org/licenses/>.
#
# PowerShell command line completion for the mpv media player.
# It can be installed by dot sourcing it in the PowerShell profile.
$Options = New-Object Collections.Generic.List[Object]
$DynamicOptions = @(
@{ name = 'vaapi-device'; pattern = '^\s*([-\w]+)' },
@{ name = 'd3d11-adapter'; pattern = 'description: (.+)' },
@{ name = 'vulkan-device'; pattern = "^\s*('.+?')" },
@{ name = 'audio-device'; pattern = "^\s*('\S+')" },
@{ name = 'hwdec'; pattern = '^\s*([-\w]+)' },
@{ name = 'error-diffusion'; pattern = '^\s*([-\w]+)' },
@{ name = 'scale'; pattern = '^\s*([-\w]+)' },
@{ name = 'cscale'; pattern = '^\s*([-\w]+)' },
@{ name = 'dscale'; pattern = '^\s*([-\w]+)' },
@{ name = 'tscale'; pattern = '^\s*([-\w]+)' },
@{ name = 'profile'; pattern = '^\s*([-\w]+)' },
@{ name = 'ao'; pattern = '^\s*([-\w]+)' },
@{ name = 'vo'; pattern = '^\s*([-\w]+)' }
)
Function SetOptions
{
try
{
$optionContent = mpv --no-config --list-options
}
catch
{
throw
}
foreach ($line in $optionContent)
{
$line = $line.Trim()
if (-not $line.StartsWith('--'))
{
continue
}
$name = ''; $value = ''; $type = ''; $choices = $null;
if ($line.Contains(' '))
{
$name = $line.Substring(2, $line.IndexOf(' ') - 2)
$value = $line.Substring($line.IndexOf(' ') + 1).Trim()
if ($value.Contains('('))
{
$value = $value.Substring(0, $value.IndexOf('(')).TrimEnd()
}
$value = $value
}
else
{
$name = $line.Substring(2)
}
if ($value.StartsWith('Choices:'))
{
$type = 'choice'
$choices = $value.Substring(8).TrimStart() -split ' '
}
if ($value.StartsWith('Flag'))
{
$type = 'flag'
}
if ($value.Contains('[file]') -or $name.Contains('-file'))
{
$type = 'file'
}
$table = @{ name = $name; value = $value; type = $type; choices = $choices }
if ($type -eq 'flag')
{
$noTable = @{ name = 'no-' + $name; value = $value; type = ''; choices = $null }
$Options.Add($table)
$Options.Add($noTable)
}
else
{
$Options.Add($table)
}
}
}
Function Update-Option($name)
{
foreach ($it in $Options)
{
if ($name -eq $it.name)
{
$option = $it
break
}
}
if ($null -eq $option)
{
Write-Error "Option $name is unknown."
return
}
if ($null -ne $option.choices)
{
return
}
foreach ($opt in $DynamicOptions)
{
if ($name -eq $opt.name)
{
$output = mpv ('--' + $opt.name + '=help') | Select-Object -Skip 1 |
Select-String ($opt.pattern) -AllMatches |
ForEach-Object { $_.matches.Groups[1].Value } |
Select-Object -Unique | Sort-Object
$output = $output | foreach { if ($_ -match "'\w+'") { $_ -replace "'", '' } else { $_ } }
$output = $output | foreach { if ($_ -match "^'.+'$") { $_ -replace "'", '' } else { $_ } }
$output = $output | foreach { if ($_.Contains(' ') -or $_.Contains('{')) { '"' + $_ + '"' } else { $_ } }
if ($output -is [string])
{
$output = @($output)
}
$output += @('help')
$option.choices = $output
$option.type = 'choice'
break
}
}
}
Function Get-Completion($cursorPosition, $wordToComplete, $commandName)
{
if ($Options.Count -eq 0)
{
SetOptions
}
if ($commandName.StartsWith('--'))
{
if ($commandName -like '--*-file*=')
{
return (Get-ChildItem -file).FullName | Resolve-Path -Relative |
ForEach-Object { if ($_.Contains(' ')) { $commandName + "'$_'" } else { $commandName + $_ } }
}
if ($commandName -match '(--.+-file.*=)(.+)')
{
return (Get-ChildItem -file).FullName | Resolve-Path -Relative |
Where-Object { $_.ToLower().Contains($Matches[2].ToLower()) } |
ForEach-Object { if ($_.Contains(' ')) { $Matches[1] + "'$_'" } else { $Matches[1] + $_ } }
}
$shortCommandName = $commandName.Substring(2)
$argName = ''
if ($commandName.EndsWith('='))
{
$shortCommandName = $shortCommandName.Substring(0, $shortCommandName.Length -1)
}
elseif ($commandName.Contains('='))
{
$shortCommandName = $shortCommandName.Substring(0, $shortCommandName.IndexOf('='))
$argName = $commandName.Substring($commandName.IndexOf('=') + 1)
}
foreach ($it in $DynamicOptions)
{
if ($shortCommandName -eq $it.name)
{
Update-Option $it.name
break
}
}
$results = New-Object Collections.Generic.List[Object]
$exactMatches = $Options | Where-Object { $_.name -eq $shortCommandName }
foreach ($it in $exactMatches)
{
if (-not $commandName.Contains('='))
{
continue
}
$arguments = $null
if ($it.type -eq 'flag')
{
$arguments = 'yes', 'no'
}
if ($it.type -eq 'choice' -and $null -ne $it.choices)
{
$arguments = $it.choices
}
if ($null -ne $arguments)
{
foreach ($arg in $arguments)
{
if ($argName -ne '')
{
if ($arg.StartsWith($argName))
{
$results.Add('--' + $it.name + '=' + $arg)
}
}
else
{
$results.Add('--' + $it.name + '=' + $arg)
}
}
}
}
if (-not $commandName.Contains('='))
{
$partlyMatches = $Options | Where-Object { $_.name.StartsWith($shortCommandName) }
foreach ($it in $partlyMatches)
{
if ($it.name -eq $shortCommandName)
{
continue
}
$results.Add('--' + $it.name)
}
}
return $results
}
elseif ($commandName -eq '')
{
return (Get-ChildItem).FullName | Resolve-Path -Relative
}
else
{
return (Get-ChildItem).FullName | Resolve-Path -Relative |
Where-Object { $_.ToLower().Contains($commandName.ToLower()) }
}
}
Register-ArgumentCompleter -Native -CommandName mpv -ScriptBlock {
param($commandName, $wordToComplete, $cursorPosition)
Get-Completion $cursorPosition "$wordToComplete" "$commandName" | ForEach-Object {
[System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
}
}