rmmd

v2.3.0

Published

a month ago

Lightweight command-line tool to convert Markdown into HTML. Built on unified.js.

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samliebl

rmmd

rmmd is a lightweight command-line tool to convert Markdown into HTML. It supports standard input, file processing, and advanced options for wrapping output in a full HTML document. Built on unified.js.

Convert Markdown to HTML: Quickly process Markdown files or input streams into semantic HTML.
Flexible Input Options: Provide input via a file, stdin, or direct piping from another command.
File Output: Write the output to a file using the --file or -f option.
Full HTML Document Wrapping: Use the --enclose or -e option to wrap the HTML content in a complete, standards-compliant HTML document.
Command-line Options:
- Process a file or piped content by default.
- --file (-f): Specify a file to write the output.
- --enclose (-e): Wrap output in a fully compliant HTML document.
- --version (-v): Output the version.
- --help (-h): Display help information.
- Use --custom (-c) to enable custom syntax processing.
- Leave out --custom to process only basic Markdown.
Modern Web Standards: Outputs valid HTML5 for browser compatibility.

Custom Markup Syntax:

= wraps text in <mark>:

This is =marked text= in markdown.

Produces:

<p>This is <mark>marked text</mark> in markdown.</p>

+ wraps text in <dfn>:

This is +a definition text+ in markdown.

Produces:

<p>This is <dfn>a definition text</dfn> in markdown.</p>

~ wraps text in <s>:

This is ~a styled text passage~ in markdown.

Produces:

<p>This is <s>a styled text passage</s> in markdown.</p>

Installation

Install rmmd globally using npm:

npm install -g rmmd

This makes the rmmd command available globally on your system.

Usage

Basic Conversion

Convert a Markdown file to HTML:

rmmd example.md

Piping Markdown Content

Pipe Markdown content directly into rmmd:

cat example.md | rmmd

Write to a File

Use the --file or -f option to specify an output file:

rmmd example.md -f output.html

Wrap Output in an HTML Document

Use the --enclose or -e option to wrap the output in a complete HTML document:

rmmd example.md -e

Combine it with file output:

rmmd example.md -e -f wrapped.html

Display Version and Help

Check the version:

rmmd -v

Display help:

rmmd -h

Convert Markdown to HTML and print to stdout:
```
rmmd example.md
```
Convert Markdown and write output to a file:
```
rmmd example.md -f result.html
```
Convert Markdown, wrap in an HTML document, and print:
```
rmmd example.md -e
```

Convert, wrap, and save to a file:

rmmd example.md -e -f full-document.html

Pipe Markdown content into rmmd and wrap in a document:
```
cat example.md | rmmd -e
```
Convert Markdown to HTML with basic syntax:
```
rmmd example.md
```
Convert Markdown to HTML with custom syntax:
```
rmmd example.md --custom
```
Wrap the output in an HTML document:
```
rmmd example.md --enclose
```
Combine custom syntax, file output, and HTML wrapping:
```
rmmd example.md --custom --enclose --file output.html
```

Default HTML Output

By default, the tool converts Markdown to clean HTML:

<h1>Hello, World</h1>
<p>This is Markdown rendered as HTML.</p>

Enclosed HTML Output

Using the --enclose option wraps the output in a valid HTML document:

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Markdown Output</title>
</head>
<body>
  <h1>Hello, World</h1>
  <p>This is Markdown rendered as HTML.</p>
</body>
</html>

The tool provides helpful error messages:

If no input is provided:

No input provided. Use a file path or pipe Markdown content.

If the specified file does not exist:

Error: ENOENT: no such file or directory, open 'example.md'

If invalid options are passed:
```
error: unknown option '--invalid'
```

The tool is modular, using separate libraries for Markdown processing and HTML wrapping. It follows modern ESM standards.

Project Structure

rmmd/
|-- bin/
|   |-- rmmd.js               # CLI logic
|-- lib/
|   |-- customMarkup.js          # Custom markup manager
|   |-- markdownToHtml.js        # Markdown to HTML conversion
|   |-- remarkMark.js            # <mark> syntax plugin
|   |-- remarkDfn.js             # <dfn> syntax plugin
|   |-- remarkStrikethrough.js   # <s> syntax plugin
|   |-- wrapHtml.js              # HTML wrapping logic

Internal Modules

markdownToHtml.js: Handles Markdown-to-HTML conversion.
wrapHtml.js: Wraps HTML output in a complete HTML document.

Adding New Syntax

Create a new plugin file in lib/.
Register it in customMarkup.js.
Enable it in the customMarkup function call in markdownToHtml.js.

Contributions welcome! Follow these steps:

Fork the repository.
Create a new branch for your feature:
```
git checkout -b feature-name
```
Commit your changes:
```
git commit -m "Add feature"
```
Push to your branch:
```
git push origin feature-name
```
Open a pull request.

This project is licensed under the MIT License. See the LICENSE file for more details.

Enjoy! -SL

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Readme

rmmd

Installation

Usage

Basic Conversion

Piping Markdown Content

Write to a File

Wrap Output in an HTML Document

Display Version and Help

Default HTML Output

Enclosed HTML Output

Project Structure

Internal Modules

Adding New Syntax