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require 'download_strategy'
require 'checksum'
require 'version'
class SoftwareSpec
attr_reader :checksum, :mirrors, :specs, :using
def initialize url=nil, version=nil
@url = url
@version = version
@mirrors = []
@specs = {}
@checksum = nil
@using = nil
end
def download_strategy
@download_strategy ||= DownloadStrategyDetector.detect(url, using)
end
def verify_download_integrity fn
fn.verify_checksum(checksum)
rescue ChecksumMissingError
opoo "Cannot verify package integrity"
puts "The formula did not provide a download checksum"
puts "For your reference the SHA1 is: #{fn.sha1}"
rescue ChecksumMismatchError => e
e.advice = <<-EOS.undent
Archive: #{fn}
(To retry an incomplete download, remove the file above.)
EOS
raise e
end
def detect_version(val)
case val
when nil then Version.detect(url, specs)
when String then Version.new(val)
when Hash then Version.new_with_scheme(*val.shift)
else
raise TypeError, "version '#{val.inspect}' should be a string"
end
end
# The methods that follow are used in the block-form DSL spec methods
Checksum::TYPES.each do |cksum|
class_eval <<-EOS, __FILE__, __LINE__ + 1
def #{cksum}(val)
@checksum = Checksum.new(:#{cksum}, val)
end
EOS
end
def url val=nil, specs={}
return @url if val.nil?
@url = val
@using = specs.delete(:using)
@specs.merge!(specs)
end
def version val=nil
@version ||= detect_version(val)
end
def mirror val
mirrors << val
end
end
class HeadSoftwareSpec < SoftwareSpec
def initialize url=nil, version=Version.new(:HEAD)
super
end
def verify_download_integrity fn
return
end
end
class Bottle < SoftwareSpec
attr_writer :url
attr_rw :root_url, :prefix, :cellar, :revision
def initialize
super
@revision = 0
@prefix = '/usr/local'
@cellar = '/usr/local/Cellar'
end
# Checksum methods in the DSL's bottle block optionally take
# a Hash, which indicates the platform the checksum applies on.
Checksum::TYPES.each do |cksum|
class_eval <<-EOS, __FILE__, __LINE__ + 1
def #{cksum}(val=nil)
return @#{cksum} if val.nil?
@#{cksum} ||= Hash.new
case val
when Hash
key, value = val.shift
@#{cksum}[value] = Checksum.new(:#{cksum}, key)
end
if @#{cksum}.has_key? bottle_tag
@checksum = @#{cksum}[bottle_tag]
end
end
EOS
end
end
|
