81 lines
2.1 KiB
Ruby
81 lines
2.1 KiB
Ruby
class RefreshBrew
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RESPOSITORY_URL = 'http://github.com/mxcl/homebrew.git'
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INIT_COMMAND = "git init"
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CHECKOUT_COMMAND = 'git checkout -q master'
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UPDATE_COMMAND = "git pull #{RESPOSITORY_URL} master"
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REVISION_COMMAND = 'git log -l -1 --pretty=format:%H 2> /dev/null'
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GIT_UP_TO_DATE = 'Already up-to-date.'
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formula_regexp = 'Library/Formula/(.+?)\.rb'
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ADDED_FORMULA = %r{^\s+create mode \d+ #{formula_regexp}$}
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UPDATED_FORMULA = %r{^\s+#{formula_regexp}\s}
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DELETED_FORMULA = %r{^\s+delete mode \d+ #{formula_regexp}$}
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attr_reader :added_formulae, :updated_formulae, :deleted_formulae, :initial_revision
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def initialize
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@added_formulae, @updated_formulae, @deleted_formulae = [], [], []
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@initial_revision = self.current_revision
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end
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# Performs an update of the homebrew source. Returns +true+ if a newer
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# version was available, +false+ if already up-to-date.
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def update_from_masterbrew!
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output = ''
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HOMEBREW_REPOSITORY.cd do
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if File.directory? '.git'
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safe_system CHECKOUT_COMMAND
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else
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safe_system "git init"
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end
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output = execute(UPDATE_COMMAND)
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end
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output.split("\n").reverse.each do |line|
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case line
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when ADDED_FORMULA
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@added_formulae << $1
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when DELETED_FORMULA
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@deleted_formulae << $1
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when UPDATED_FORMULA
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@updated_formulae << $1 unless @added_formulae.include?($1) or @deleted_formulae.include?($1)
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end
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end
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@added_formulae.sort!
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@updated_formulae.sort!
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@deleted_formulae.sort!
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output.strip != GIT_UP_TO_DATE
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end
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def pending_formulae_changes?
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!@updated_formulae.empty?
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end
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def pending_new_formulae?
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!@added_formulae.empty?
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end
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def deleted_formulae?
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!@deleted_formulae.empty?
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end
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def current_revision
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HOMEBREW_REPOSITORY.cd { execute(REVISION_COMMAND).strip }
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rescue
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'TAIL'
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end
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private
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def execute(cmd)
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out = `#{cmd}`
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if $? && !$?.success?
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puts out
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raise "Failed while executing #{cmd}"
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end
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ohai(cmd, out) if ARGV.verbose?
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out
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end
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end
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