add internal command `_stanza`
to extract the compiled/interpolated values for a given stanza.
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@ -24,6 +24,7 @@ require 'cask/cli/update'
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require 'cask/cli/internal_use_base'
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require 'cask/cli/internal_dump'
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require 'cask/cli/internal_help'
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require 'cask/cli/internal_stanza'
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class Cask::CLI
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@ -0,0 +1,133 @@
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class Cask::CLI::InternalStanza < Cask::CLI::InternalUseBase
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# Syntax
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#
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# brew cask _stanza <stanza_name> [ --table | --yaml | --inspect | --quiet ] [ <cask_names> ]
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#
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# If no Cask names are given, then all are returned.
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#
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# The pseudo-stanzas "artifacts" and "sums" are available.
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#
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# On failure, a blank line is returned on the standard output.
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#
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# Examples
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#
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# brew cask _stanza appcast --table
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# brew cask _stanza link --table alfred google-chrome adium voicemac logisim vagrant
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# brew cask _stanza url --table alfred google-chrome adium voicemac logisim vagrant
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# brew cask _stanza version --table alfred google-chrome adium voicemac logisim vagrant
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# brew cask _stanza artifacts --table --inspect alfred google-chrome adium voicemac logisim vagrant
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# brew cask _stanza artifacts --table --yaml alfred google-chrome adium voicemac logisim vagrant
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#
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# todo: this should be retrievable from Cask::DSL
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ARTIFACTS = Set.new([
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:link,
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:prefpane,
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:qlplugin,
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:font,
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:widget,
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:service,
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:colorpicker,
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:binary,
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:input_method,
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:screen_saver,
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:install,
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:caskroom_only,
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:nested_container,
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:uninstall,
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:after_install,
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:after_uninstall,
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:before_install,
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:before_uninstall,
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])
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def self.run(*arguments)
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table = arguments.include? '--table'
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quiet = arguments.include? '--quiet'
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format = :to_yaml if arguments.include? '--yaml'
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format = :inspect if arguments.include? '--inspect'
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cask_names = arguments.reject { |arg| arg.chars.first == '-' }
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stanza = cask_names.shift.to_sym
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cask_names = Cask.all_titles if cask_names.empty?
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retval = print_stanzas(stanza, format, table, quiet, *cask_names)
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# retval is ternary: true/false/nil
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if retval.nil?
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exit 1 if quiet
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raise CaskError.new("nothing to print")
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elsif ! retval
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exit 1 if quiet
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raise CaskError.new("print incomplete")
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end
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end
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def self.print_stanzas(stanza, format=nil, table=nil, quiet=nil, *cask_names)
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count = 0
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stanza = :sums if stanza == :sha256
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if ARTIFACTS.include?(stanza)
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artifact_name = stanza
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stanza = :artifacts
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end
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cask_names.each do |cask_name|
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print "#{cask_name}\t" if table
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begin
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cask = Cask.load(cask_name)
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rescue StandardError
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opoo "Cask '#{cask_name}' was not found" unless quiet
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puts ''
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next
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end
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unless cask.respond_to?(stanza)
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opoo "no such stanza '#{stanza}' on Cask '#{cask_name}'" unless quiet
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puts ''
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next
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end
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begin
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value = cask.send(stanza)
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rescue StandardError
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opoo "failure calling '#{stanza}' on Cask '#{cask_name}'" unless quiet
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puts ''
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next
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end
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if artifact_name and not value.key?(artifact_name)
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opoo "no such stanza '#{artifact_name}' on Cask '#{cask_name}'" unless quiet
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puts ''
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next
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end
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if artifact_name
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value = value.fetch(artifact_name).to_a.flatten
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end
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if format
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puts value.send(format)
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else
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if artifact_name or value.is_a?(Symbol)
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puts value.inspect
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elsif stanza == :sums
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# hack. why does "to_s" equal "inspect" for checksum objects?
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puts value
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else
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puts value.to_s
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end
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end
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count += 1
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end
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count == 0 ? nil : count == cask_names.length
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end
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def self.help
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"Extract and render a specific stanza for the given Casks"
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end
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end
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