koconder/mdcheckr

Practical CI testing for markdown files

mdcheckr

mdcheckr is a testing tool to detect quality problems with your Markdown documentation. It is designed to act as a quality gate in your continuous integration pipeline.

• Syntax errors in code blocks - Syntax-check code blocks that identify their language. Currently works for:
  • bash (example)
  • PHP (example)
• Code blocks- Detection of un-closed code blocks (example)
• Broken links- Flag files that link to relative paths or URLs on the internet which can't be accessed (example, example).
• Broken images- Detect broken embeds, local and remote (example, example).

This tool is not intended to enforce a code style, and will not critique aspects of your Markdown code which do not affect the output.

Dependencies

Requirements:

• curl
• xmllint
• pandoc

Installation

Operating systems

Ubuntu

These may be installed from the mike42/mdcheckr PPA (Notes for Travis CI users: Installing Dependencies)

sudo add-apt-repository -y ppa:mike42/mdcheckr
sudo apt-get update
sudo apt-get -y install mdcheckr

Debian

Fetch the Debian package from releases.

sudo dpkg -i mdcheckr_x.y-z_all.deb
sudo apt-get -f install

Redhat-based distrbutions

Fetch the RPM package from releases.

yum -y install epel-release
yum -y install which pandoc libxml2 mdcheckr-x.y-z.noarch.rpm
ln -s /usr/bin/mktemp /usr/bin/tempfile

This package should be considered a preview only, and is currently being produced with Alien.

Apple Mac OS distributions

You will still need to follow "install from source" instructions. However you need to ensure the dependency of Pandadoc is installed on your mac. Pleasse ensure you have homebrew installed first.

brew update
brew install pandoc
curl https://raw.githubusercontent.com/mike42/mdcheckr/master/mdcheckr -o mdcheckr
chmod +x mdcheckr
sudo mv mdcheckr /usr/local/bin

Install from source

If the dependencies are available on your system, just copy the shell script itself to /usr/local/bin:

curl https://raw.githubusercontent.com/mike42/mdcheckr/master/mdcheckr -o mdcheckr
chmod +x mdcheckr
sudo cp mdcheckr /usr/local/bin

Usage

mdcheckr [ -h | --help ] [ -v | --version ] FILE ..

Examples

Check a single markdown file:

mdcheckr README.md

Check all the markdown files in the current directory:

find . -name '*.md' -print0 | xargs -0 mdcheckr

Check all the markdown files in your Git repository:

git ls-files | grep '\.md$' | tr '\n' '\0' | xargs -0 mdcheckr