150 lines
3.3 KiB
Ruby
150 lines
3.3 KiB
Ruby
require 'download_strategy'
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require 'checksum'
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require 'version'
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FormulaConflict = Struct.new(:name, :reason)
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class SoftwareSpec
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attr_reader :checksum, :mirrors, :specs
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attr_reader :using # for auditing
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def initialize url=nil, version=nil
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@url = url
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@version = version
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@mirrors = []
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@specs = {}
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@checksum = nil
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@using = nil
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end
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def download_strategy
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@download_strategy ||= DownloadStrategyDetector.detect(url, using)
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end
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def verify_download_integrity fn
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fn.verify_checksum(checksum)
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rescue ChecksumMissingError
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opoo "Cannot verify package integrity"
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puts "The formula did not provide a download checksum"
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puts "For your reference the SHA1 is: #{fn.sha1}"
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rescue ChecksumMismatchError => e
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e.advice = <<-EOS.undent
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Archive: #{fn}
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(To retry an incomplete download, remove the file above.)
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EOS
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raise e
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end
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def detect_version(val)
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case val
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when nil then Version.detect(url, specs)
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when String then Version.new(val)
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when Hash then Version.new_with_scheme(*val.shift)
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end
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end
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# The methods that follow are used in the block-form DSL spec methods
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Checksum::TYPES.each do |cksum|
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class_eval <<-EOS, __FILE__, __LINE__ + 1
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def #{cksum}(val)
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@checksum = Checksum.new(:#{cksum}, val)
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end
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EOS
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end
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def url val=nil, specs={}
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return @url if val.nil?
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@url = val
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@using = specs.delete(:using)
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@specs.merge!(specs)
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end
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def version val=nil
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@version ||= detect_version(val)
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end
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def mirror val
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mirrors << val
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end
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end
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class HeadSoftwareSpec < SoftwareSpec
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def initialize url=nil, version=Version.new(:HEAD)
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super
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end
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def verify_download_integrity fn
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return
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end
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end
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class Bottle < SoftwareSpec
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attr_writer :url
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attr_rw :root_url, :prefix, :cellar, :revision
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def initialize
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super
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@revision = 0
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@prefix = '/usr/local'
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@cellar = '/usr/local/Cellar'
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end
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# Checksum methods in the DSL's bottle block optionally take
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# a Hash, which indicates the platform the checksum applies on.
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Checksum::TYPES.each do |cksum|
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class_eval <<-EOS, __FILE__, __LINE__ + 1
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def #{cksum}(val=nil)
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return @#{cksum} if val.nil?
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@#{cksum} ||= Hash.new
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case val
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when Hash
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key, value = val.shift
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@#{cksum}[value] = Checksum.new(:#{cksum}, key)
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end
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if @#{cksum}.has_key? bottle_tag
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@checksum = @#{cksum}[bottle_tag]
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end
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end
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EOS
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end
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end
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# Used to annotate formulae that duplicate OS X provided software
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# or cause conflicts when linked in.
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class KegOnlyReason
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attr_reader :reason, :explanation
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def initialize reason, explanation=nil
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@reason = reason
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@explanation = explanation
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@valid = case @reason
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when :provided_pre_mountain_lion then MacOS.version < :mountain_lion
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else true
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end
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end
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def valid?
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@valid
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end
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def to_s
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case @reason
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when :provided_by_osx then <<-EOS.undent
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Mac OS X already provides this software and installing another version in
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parallel can cause all kinds of trouble.
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#{@explanation}
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EOS
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when :provided_pre_mountain_lion then <<-EOS.undent
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Mac OS X already provides this software in versions before Mountain Lion.
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#{@explanation}
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EOS
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else
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@reason
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end.strip
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end
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end
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