claptrap 0.3.0

Bring the power of Clap to shell scripts.
Documentation 
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#!/usr/bin/env pwsh

$ErrorActionPreference = 'Stop'
Set-StrictMode -Version Latest

if (-not (Get-Command claptrap -ErrorAction SilentlyContinue)) {
    Write-Output "claptrap command not found. Please install it first, see https://claptrap.sh for instructions."
    exit 1
}

. ([scriptblock]::Create(( & claptrap --spec {{spec}} --output-format powershell -- @args ) -join "`n"))

{% macro dump_arg(arg) -%}
{% if arg.multiple %}
if (Test-Path Env:{{ arg.name }}) {
  ${{ arg.name }} = $env:{{ arg.name }} -split ' '
  for ($i = 0; $i -lt ${{ arg.name }}.Length; $i++) {
    Write-Output "{{ arg.name }}[$i]: $(${{ arg.name }}[$i])"
  }
}
{% else %}
if (Test-Path Env:{{ arg.name }}) {
  Write-Output "{{ arg.name }}: $env:{{ arg.name }}"
}
{% endif %}
{%- endmacro %}

{% if values.subcommands|length == 0 %}
{% for arg in values.args %}
{{ dump_arg(arg) }}
{% endfor %}
{% else %}
if (-not (Test-Path Env:claptrap__subcommand)) {
  {% if values.args|length > 0 %}
  {% for arg in values.args %}
  {{ dump_arg(arg)|indent(2, true) }}
  {% endfor %}
  {% endif %}
} else {
  Write-Output "claptrap__subcommand: $env:claptrap__subcommand"
  switch ($env:claptrap__subcommand) {
  {% for sub in values.subcommands %}
    "{{ sub.name }}" {
      {% for arg in sub.args %}
      {{ dump_arg(arg)|indent(6, true) }}
      {% endfor %}
    }
  {% endfor %}
  }
}
{% endif %}