epaew / ecg

ERB(eRuby) based, simple and powerful configration file generator for general purpose.

ecg

ecg is an ERB(eRuby) based, simple and powerful configration file generator for general purpose.

Requirements

Ruby: 2.5 or higher

Install

gem install ecg

Usage

See also ecg --help

Simple example

ecg --values name=epaew --values email="[e-mail]" < template.json.erb
{
  "type": "user",
  "name": "epaew",
  "email": "[e-mail]"
}

or

ecg config.yml < template.json.erb
{
  "type": "user",
  "name": "epaew",
  "email": "[e-mail]"
}

with

• template.json.erb

  {
    "type": "user",
    "name": "<%= name %>",
    "email": "<%= email %>"
  }

• config.yml

  name: epaew
  email: [e-mail]

Using nested keys

ecg --values user.name=epaew --values user.email="[e-mail]" < template.json.erb
{
  "user": {
    "name": "epaew",
    "email": "[e-mail]"
  }
}

or

ecg config.yml < template.json.erb
{
  "user": {
    "name": "epaew",
    "email": "[e-mail]"
  }
}

with

• template.json.erb

  {
    "user": {
      "name": "<%= user.name %>",
      "email": "<%= user.email %>"
    }
  }

• config.yml

  user:
    name: epaew
    email: [e-mail]

Using array (JSON and YAML only)

ecg config.yml < template.json.erb
{
  "user": [
    {
      "name": "Kurimu"
    },
    {
      "name": "Chizuru"
    },
    {
      "name": "Minatsu"
    },
    {
      "name": "Mahuyu"
    }
  ]
}

with

• template.json.erb

  {
    "user": [
  <% users.each_with_index do |user, i| %>
      {
        "name": "<%= user.name %>"
  <% unless i == users.count - 1 %>
      },
  <% else %>
      }
  <% end %>
  <% end %>
    ]
  }

• config.yml

  users:
    - name: Kurimu
    - name: Chizuru
    - name: Minatsu
    - name: Mahuyu

License

MIT