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|
require 'download_strategy'
require 'checksums'
class SoftwareSpec
attr_reader :checksum, :mirrors, :specs
def initialize url=nil, version=nil
@url = url
@version = version
end
# Was the version defined in the DSL, or detected from the URL?
def explicit_version?
@explicit_version || false
end
def download_strategy
@download_strategy ||= DownloadStrategyDetector.new(@url, @using).detect
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
# The methods that follow are used in the block-form DSL spec methods
Checksum::TYPES.each do |cksum|
class_eval %Q{
def #{cksum}(val=nil)
if val.nil?
@checksum if @checksum.nil? or @checksum.hash_type == :#{cksum}
else
@checksum = Checksum.new(:#{cksum}, val)
end
end
}
end
def url val=nil, specs=nil
return @url if val.nil?
@url = val
if specs.nil?
@using = nil
else
@using = specs.delete :using
@specs = specs
end
end
def version val=nil
unless val.nil?
@version = val
@explicit_version = true
end
@version ||= Pathname.new(@url).version
return @version
end
def mirror val
@mirrors ||= []
@mirrors << val
end
end
class HeadSoftwareSpec < SoftwareSpec
def initialize url=nil, version='HEAD'
super
end
def verify_download_integrity fn
return
end
end
class Bottle < SoftwareSpec
attr_writer :url
attr_reader :revision
def initialize url=nil, version=nil
super
@revision = 0
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 %Q{
def #{cksum}(val=nil)
@#{cksum} ||= Hash.new
case val
when nil
@#{cksum}[MacOS.cat]
when String
@#{cksum}[:lion] = Checksum.new(:#{cksum}, val)
when Hash
key, value = val.shift
@#{cksum}[value] = Checksum.new(:#{cksum}, key)
end
@checksum = @#{cksum}[MacOS.cat] if @#{cksum}.has_key? MacOS.cat
end
}
end
def url val=nil
val.nil? ? @url : @url = val
end
# Used in the bottle DSL to set @revision, but acts as an
# as accessor for @version to preserve the interface
def version val=nil
if val.nil?
return @version ||= Pathname.new(@url).version
else
@revision = val
end
end
end
# Used to annotate formulae that duplicate OS X provided software
# or cause conflicts when linked in.
class KegOnlyReason
attr_reader :reason, :explanation
def initialize reason, explanation=nil
@reason = reason
@explanation = explanation
end
def to_s
if @reason == :provided_by_osx
<<-EOS.strip
Mac OS X already provides this program and installing another version in
parallel can cause all kinds of trouble.
#{@explanation}
EOS
else
@reason.strip
end
end
end
|
