Module: Dpkg::Deb

Defined in:
lib/dpkg/deb.rb,
lib/dpkg/deb/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.fields(package_path, fieldnames = []) ⇒ Object 



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# File 'lib/dpkg/deb.rb', line 8

def fields(package_path, fieldnames = [])
  out = `dpkg-deb -f #{package_path} #{fieldnames.join(" ")}`

  # rules are:
  # fields are usually line-based and follow the general format of
  # <field name><colon><space><field value>, for example
  # Maintainer: Felix Gilcher <[email protected]>
  # The exception to the rule is the decription field that has the format
  # <field name><colon><space><short description><newline>
  # <description>
  # The description needs to be indented by a single space and empty lines
  # are replaced by a dot. 

  fields = {}
  description = []

  out.each_line do |line|

    if match = /^(?<fieldname>[^:]+): (?<fieldvalue>.+)$/.match(line)
      fields[match['fieldname']] = match['fieldvalue']
    elsif match = /^ .+$/.match(line)
      description.push line
    else
      raise "unparseable line '#{line}' found"
    end

  end

  fields['Description'] << description.join("") unless fields['Description'].nil?

  fields 
end