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PlatyPS

PlatyPS provides a way to

  • Write PowerShell External Help in Markdown
  • Generate markdown help (example) for your existing modules
  • Keep markdown help up-to-date with your code

Markdown help docs can be generated from old external help files (also known as MAML-xml help), the command objects (reflection), or both.

PlatyPS can also generate cab files for Update-Help.

Why?

Traditionally PowerShell external help files have been authored by hand or using complex tool chains and rendered as MAML XML for use as console help. MAML is cumbersome to edit by hand, and common tools and editors don't support it for complex scenarios like they do with Markdown. PlatyPS is provided as a solution for allow documenting PowerShell help in any editor or tool that supports Markdown.

An additional challange PlatyPS tackles, is to handle PowerShell documentation for complex scenarios (e.g. very large, closed source, and/or C#/binary modules) where it may be desirable to have documentation abstracted away from the codebase. PlatyPS does not need source access to generate documentation.

Markdown is designed to be human-readable, without rendering. This makes writing and editing easy and efficient. Many editors support it (Visual Studio Code, Sublime Text, etc), and many tools and collaboration platforms (GitHub, Visual Studio Online) render the Markdown nicely.

Quick start

Install-Module -Name platyPS -Scope CurrentUser
Import-Module platyPS
  • Create initial Markdown help for MyAwesomeModule module:
# you should have module imported in the session
Import-Module MyAwesomeModule
New-MarkdownHelp -Module MyAwesomeModule -OutputFolder .\docs
  • Edit markdown files in .\docs folder and populate {{ ... }} placeholders with missed help content.

  • Create external help from markdown help

New-ExternalHelp .\docs -OutputPath en-US\
  • Congratulations, your help is now in markdown!

  • Now, if your module code changes, you can easily update your markdown help with

# re-import your module with latest changes
Import-Module MyAwesomeModule -Force
Update-MarkdownHelp .\docs

PlatyPS markdown schema

Unfortunately, you cannot just write any Markdown, as platyPS expects Markdown to be authored in a particular way. We have defined a schema to determine how parameters are described, where scripts examples are shown, and so on.

The schema closely resembles the existing output format of the Get-Help cmdlet in PowerShell.

If you break the schema in your markdown, you will get error messages from New-ExternalHelp and Update-MarkdownHelp. You would not be able to generate extrenal help or update your markdown.

It may be fine for some scenarios, i.e. you want to have online-only version of markdown.

Supported scenarios:

  • Create Markdown

    • Using existing external help files (MAML schema, XML).
    • Using reflection
    • Using reflection and existing internal external help files.
    • For a single cmdlet
    • For an entire module
  • Update existing Markdown through reflection.

  • Create a module page .md with summary. It will also allow you to create updatable help cab.

  • Retrieve markdown metadata from markdown file.

  • Create external help xml files (MAML) from platyPS Markdown.

  • Create external help file cab

  • Preview help from generated maml file.

  • Update the schema of existing PlatyPS generated markdown files (Currently version 1.0.0 to version 2.0.0)

Build

For information about building from sources and contributing see contributing guidelines.

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