brew/Library/Homebrew/os/mac/ruby_mach.rb
William Woodruff afe0fde49c os/mac: optionally use ruby_macho.
- and branch for dylib_id_and_dylibs
- add branches for dylib id changing and change_install_name
- rename MachO module to HomebrewMachO to prevent namespace clashes
  with MachO in ruby-macho. this will eventually be replaced entirely
  with direct calls to ruby-macho methods
- break ruby-macho implementation out into separate RubyMachO module,
  and include either RubyMachO or CctoolsMachO (the original
  implementation) based on the HOMEBREW_RUBY_MACHO env var
- move ArchitectureListExtension and RubyMachO into separate files
- create {ruby_,cctools_,,}relocate.rb for isolation of different
  methods of mach-o relocation (ruby-macho vs. cctools)
- fill in require_install_name_tool? for ruby_relocate.rb
- rename {ruby_,cctools_,,}relocate.rb to keg, isolate requires in
  os/mac

Closes Homebrew/homebrew#45001.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
2016-02-03 21:25:40 +00:00

104 lines
1.7 KiB
Ruby

require "vendor/macho/macho"
require "os/mac/architecture_list"
module RubyMachO
# @private
def macho
@macho ||= begin
MachO.open(to_s)
end
end
# @private
def mach_data
@mach_data ||= begin
machos = []
mach_data = []
if MachO.fat_magic?(macho.magic)
machos = macho.machos
else
machos << macho
end
machos.each do |m|
arch = case m.cputype
when "CPU_TYPE_I386" then :i386
when "CPU_TYPE_X86_64" then :x86_64
when "CPU_TYPE_POWERPC" then :ppc7400
when "CPU_TYPE_POWERPC64" then :ppc64
else :dunno
end
type = case m.filetype
when "MH_EXECUTE" then :executable
when "MH_DYLIB" then :dylib
when "MH_BUNDLE" then :bundle
else :dunno
end
mach_data << { :arch => arch, :type => type }
end
mach_data
rescue
[]
end
end
def archs
mach_data.map { |m| m.fetch :arch }.extend(ArchitectureListExtension)
end
def arch
case archs.length
when 0 then :dunno
when 1 then archs.first
else :universal
end
end
def universal?
arch == :universal
end
def i386?
arch == :i386
end
def x86_64?
arch == :x86_64
end
def ppc7400?
arch == :ppc7400
end
def ppc64?
arch == :ppc64
end
# @private
def dylib?
mach_data.any? { |m| m.fetch(:type) == :dylib }
end
# @private
def mach_o_executable?
mach_data.any? { |m| m.fetch(:type) == :executable }
end
# @private
def mach_o_bundle?
mach_data.any? { |m| m.fetch(:type) == :bundle }
end
def dynamically_linked_libraries
macho.linked_dylibs
end
def dylib_id
macho.dylib_id
end
end