src/ruby/tools/bin/grpc_tools_ruby_protoc

#!/usr/bin/env ruby
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require 'rbconfig'

require_relative '../platform_check'

ext = RbConfig::CONFIG['EXEEXT']

protoc_name = 'protoc' + ext

plugin_name = 'grpc_ruby_plugin' + ext

protoc_dir = File.join(File.dirname(__FILE__),
                       PLATFORM.architecture + '-' + PLATFORM.os_name)

protoc_path = File.join(protoc_dir, protoc_name)

plugin_path = File.join(protoc_dir, plugin_name)

exec([ protoc_path, protoc_path ], "--plugin=protoc-gen-grpc=#{plugin_path}", *ARGV)