# frozen_string_literal: true require 'fiddle.so' require 'fiddle/closure' require 'fiddle/function' require 'fiddle/version' module Fiddle if WINDOWS # Returns the last win32 +Error+ of the current executing +Thread+ or nil # if none def self.win32_last_error Thread.current[:__FIDDLE_WIN32_LAST_ERROR__] end # Sets the last win32 +Error+ of the current executing +Thread+ to +error+ def self.win32_last_error= error Thread.current[:__FIDDLE_WIN32_LAST_ERROR__] = error end # Returns the last win32 socket +Error+ of the current executing # +Thread+ or nil if none def self.win32_last_socket_error Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__] end # Sets the last win32 socket +Error+ of the current executing # +Thread+ to +error+ def self.win32_last_socket_error= error Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__] = error end end # Returns the last +Error+ of the current executing +Thread+ or nil if none def self.last_error Thread.current[:__FIDDLE_LAST_ERROR__] end # Sets the last +Error+ of the current executing +Thread+ to +error+ def self.last_error= error Thread.current[:__DL2_LAST_ERROR__] = error Thread.current[:__FIDDLE_LAST_ERROR__] = error end # call-seq: dlopen(library) => Fiddle::Handle # # Creates a new handler that opens +library+, and returns an instance of # Fiddle::Handle. # # If +nil+ is given for the +library+, Fiddle::Handle::DEFAULT is used, which # is the equivalent to RTLD_DEFAULT. See man 3 dlopen for more. # # lib = Fiddle.dlopen(nil) # # The default is dependent on OS, and provide a handle for all libraries # already loaded. For example, in most cases you can use this to access # +libc+ functions, or ruby functions like +rb_str_new+. # # See Fiddle::Handle.new for more. def dlopen library begin Fiddle::Handle.new(library) rescue DLError => error case RUBY_PLATFORM when /linux/ case error.message when /\A(\/.+?): (?:invalid ELF header|file too short)/ # This may be a linker script: # https://sourceware.org/binutils/docs/ld.html#Scripts path = $1 else raise end else raise end File.open(path) do |input| input.each_line do |line| case line when /\A\s*(?:INPUT|GROUP)\s*\(\s*([^\s,\)]+)/ # TODO: Should we support multiple files? return dlopen($1) end end end # Not found raise end end module_function :dlopen # Add constants for backwards compat RTLD_GLOBAL = Handle::RTLD_GLOBAL # :nodoc: RTLD_LAZY = Handle::RTLD_LAZY # :nodoc: RTLD_NOW = Handle::RTLD_NOW # :nodoc: Fiddle::Types.constants.each do |type| const_set "TYPE_#{type}", Fiddle::Types.const_get(type) end end