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Versions: 19
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Contents
module Boxes
# Representations of Packer templates.
class Template
include Boxes::Errors
attr_reader :name, :template
# Load a template with a given name.
#
# @param env [Boxes::Environment] the environment to source templates.
# @param name [String] the name of the template.
#
# @return [Boxes::Template] a template instance.
def initialize(env, name)
fail(TemplateNotFoundError) unless env.available_templates.include?(name)
@name = name
@template = ''
File.open(Boxes.config.working_dir + "templates/#{name}.erb") do |f|
@template << f.read
end
end
# Render the template.
#
# @param args [Hash] the values to set.
#
# @return [String] the rendered template.
def render(args)
ERB.new(template, nil, '-').result(ERBContext.new(args).get_binding)
end
# A context to render inside, to avoid polluting other classes.
class ERBContext
# Create a new context with a given hash of values.
#
# @params args [Hash] the values to substitute.
def initialize(args = {})
args.each_pair do |k, v|
instance_variable_set('@' + k.to_s, v)
end
end
# The binding which is passed to ERB.
def get_binding # rubocop:disable Style/AccessorMethodName
binding
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems