138 lines
3.8 KiB
Ruby
138 lines
3.8 KiB
Ruby
require "set"
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require "keg"
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require "formula"
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class LinkageChecker
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attr_reader :keg, :formula
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attr_reader :brewed_dylibs, :system_dylibs, :broken_dylibs, :variable_dylibs
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attr_reader :undeclared_deps, :reverse_links
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def initialize(keg, formula = nil)
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@keg = keg
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@formula = formula || resolve_formula(keg)
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@brewed_dylibs = Hash.new { |h, k| h[k] = Set.new }
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@system_dylibs = Set.new
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@broken_dylibs = Set.new
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@variable_dylibs = Set.new
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@undeclared_deps = []
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@reverse_links = Hash.new { |h, k| h[k] = Set.new }
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check_dylibs
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end
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def check_dylibs
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@keg.find do |file|
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next if file.symlink? || file.directory?
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next unless file.dylib? || file.mach_o_executable? || file.mach_o_bundle?
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file.dynamically_linked_libraries.each do |dylib|
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@reverse_links[dylib] << file
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if dylib.start_with? "@"
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@variable_dylibs << dylib
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else
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begin
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owner = Keg.for Pathname.new(dylib)
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rescue NotAKegError
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@system_dylibs << dylib
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rescue Errno::ENOENT
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@broken_dylibs << dylib
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else
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tap = Tab.for_keg(owner).tap
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f = if tap.nil? || tap.core_tap?
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owner.name
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else
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"#{tap}/#{owner.name}"
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end
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@brewed_dylibs[f] << dylib
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end
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end
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end
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end
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@undeclared_deps = check_undeclared_deps if formula
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end
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def check_undeclared_deps
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filter_out = proc do |dep|
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next true if dep.build?
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next false unless dep.optional? || dep.recommended?
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formula.build.without?(dep)
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end
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declared_deps = formula.deps.reject { |dep| filter_out.call(dep) }.map(&:name)
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declared_requirement_deps = formula.requirements.reject { |req| filter_out.call(req) }.map(&:default_formula).compact
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declared_dep_names = (declared_deps + declared_requirement_deps).map { |dep| dep.split("/").last }
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undeclared_deps = @brewed_dylibs.keys.select do |full_name|
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name = full_name.split("/").last
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next false if name == formula.name
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!declared_dep_names.include?(name)
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end
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undeclared_deps.sort do |a, b|
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if a.include?("/") && !b.include?("/")
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1
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elsif !a.include?("/") && b.include?("/")
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-1
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else
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a <=> b
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end
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end
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end
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def display_normal_output
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display_items "System libraries", @system_dylibs
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display_items "Homebrew libraries", @brewed_dylibs
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display_items "Variable-referenced libraries", @variable_dylibs
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display_items "Missing libraries", @broken_dylibs
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display_items "Possible undeclared dependencies", @undeclared_deps
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end
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def display_reverse_output
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return if @reverse_links.empty?
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sorted = @reverse_links.sort
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sorted.each do |dylib, files|
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puts dylib
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files.each do |f|
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unprefixed = f.to_s.strip_prefix "#{@keg}/"
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puts " #{unprefixed}"
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end
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puts unless dylib == sorted.last[0]
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end
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end
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def display_test_output
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display_items "Missing libraries", @broken_dylibs
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puts "No broken dylib links" if @broken_dylibs.empty?
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end
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def broken_dylibs?
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!@broken_dylibs.empty?
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end
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def undeclared_deps?
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!@undeclared_deps.empty?
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end
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private
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# Display a list of things.
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# Things may either be an array, or a hash of (label -> array)
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def display_items(label, things)
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return if things.empty?
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puts "#{label}:"
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if things.is_a? Hash
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things.sort.each do |list_label, list|
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list.sort.each do |item|
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puts " #{item} (#{list_label})"
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end
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end
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else
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things.sort.each do |item|
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puts " #{item}"
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end
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end
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end
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def resolve_formula(keg)
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Formulary.from_keg(keg)
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rescue FormulaUnavailableError
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opoo "Formula unavailable: #{keg.name}"
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end
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end
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