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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Windows _spawnv
require 'ffi'
module Spoon
P_NOWAIT = 1
extend FFI::Library
ffi_lib FFI::Library::LIBC
attach_function :_spawnve, [:int, :string, :pointer, :pointer], :int
attach_function :_spawnvpe, [:int, :string, :pointer, :pointer], :int
ffi_lib 'kernel32'
ffi_convention :stdcall
attach_function :_get_process_id, :GetProcessId, [:int], :ulong
def self.spawn(*args)
spawn_args = _prepare_spawn_args(args)
_get_process_id(_spawnve(*spawn_args))
end
def self.spawnp(*args)
spawn_args = _prepare_spawn_args(args)
_get_process_id(_spawnvpe(*spawn_args))
end
private
def self._prepare_spawn_args(args)
args_ary = FFI::MemoryPointer.new(:pointer, args.length + 1)
str_ptrs = args.map {|str| FFI::MemoryPointer.from_string(str)}
args_ary.put_array_of_pointer(0, str_ptrs)
env_ary = FFI::MemoryPointer.new(:pointer, ENV.length + 1)
env_ptrs = ENV.map {|key,value| FFI::MemoryPointer.from_string("#{key}=#{value}")}
env_ary.put_array_of_pointer(0, env_ptrs)
[P_NOWAIT, args[0], args_ary, env_ary]
end
end
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