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Versions: 3
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Contents
require "open3"
require "github/markup/implementation"
module GitHub
module Markup
class CommandError < RuntimeError
end
class CommandImplementation < Implementation
attr_reader :command, :block, :name
def initialize(regexp, languages, command, name, &block)
super(regexp, languages)
@command = command.to_s
@block = block
@name = name
end
def render(filename, content, options: {})
rendered = execute(command, content)
rendered = rendered.to_s.empty? ? content : rendered
call_block(rendered, content)
end
private
def call_block(rendered, content)
if block && block.arity == 2
block.call(rendered, content)
elsif block
block.call(rendered)
else
rendered
end
end
def execute(command, target)
# capture3 blocks until both buffers are written to and the process terminates, but
# it won't allow either buffer to fill up
stdout, stderr, status = Open3.capture3(*command, stdin_data: target)
raise CommandError.new(stderr) unless status.success?
sanitize(stdout, target.encoding)
end
def sanitize(input, encoding)
input.gsub("\r", '').force_encoding(encoding)
end
end
end
end
Version data entries
3 entries across 3 versions & 2 rubygems