Class: Cid::Datapackage

Inherits:
Object
  • Object
show all
Defined in:
lib/cid/datapackage.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Datapackage

Returns a new instance of Datapackage.



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# File 'lib/cid/datapackage.rb', line 10

def initialize(path)
  @path = path
  begin
    @datapackage = JSON.parse(File.new("#{@path}/datapackage.json").read)
  rescue
    return "No datapackage present!"
  end
end

Instance Attribute Details

#json ⇒ Object

Returns the value of attribute json.



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# File 'lib/cid/datapackage.rb', line 8

def json
  @json
end

Instance Method Details

#create ⇒ Object 



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# File 'lib/cid/datapackage.rb', line 19

def create

  paths = Dir.glob("#{@path}/*/")

  paths.each do |path|

    if File.file?("#{path}schema.json")
      schema = JSON.parse(File.new(Dir["#{path}schema.json"][0]).read)
    else
      schema = nil
    end

    Dir["#{path}*.csv"].each do |csv|
      ref = csv.split("/").last(2).join("/")

      schema = schema_for_file(ref, true) rescue nil if schema.nil?

      resource = {
        name: File.basename(csv, ".csv"),
        path: ref,
        format: "csv",
        mediatype: "text/csv",
        bytes: File.size(csv)
      }

      resource[:schema] = { fields: schema["fields"] } unless schema.nil?

      @datapackage["resources"].reject! { |r| r["path"] == ref }
      @datapackage["resources"] << resource
    end
  end

  @json = @datapackage.to_json
end

#publish(token = ) ⇒ Object 



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# File 'lib/cid/datapackage.rb', line 59

def publish(token = ENV['GITHUB_OAUTH_TOKEN'])
  git = Cid::Publish.new(@path, token)
  git.publish
end

#schema_for_file(path, json = false) ⇒ Object 



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# File 'lib/cid/datapackage.rb', line 64

def schema_for_file(path, json = false)
  begin
    schema = @datapackage["resources"].select { |r| r["path"] == path }.first["schema"]
    return Csvlint::Schema.from_json_table(nil, schema) if json === false
  rescue NoMethodError
    nil
  end
  return schema
end

#write ⇒ Object 



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# File 'lib/cid/datapackage.rb', line 54

def write
  self.create if @json.nil?
  File.open("#{@path}/datapackage.json", 'w') { |f| f.write(@json) }
end