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module Vedeu
# This class ensures that STDIN, STDOUT and STDERR point to the correct
# places. It also handles the initial configuration of the application,
# the starting of the application, the handling of uncaught exceptions and
# finally the exiting of the application with the correct exit code.
#
# @api public
class Launcher
attr_reader :exit_code
# @see Vedeu::Launcher#initialize
def self.execute!(argv = [],
stdin = STDIN,
stdout = STDOUT,
stderr = STDERR,
kernel = Kernel)
new(argv,
stdin = STDIN,
stdout = STDOUT,
stderr = STDERR,
kernel = Kernel).execute!
end
# @param argv [Array]
# @param stdin []
# @param stdout []
# @param stderr []
# @param kernel []
# @return [Launcher]
def initialize(argv = [],
stdin = STDIN,
stdout = STDOUT,
stderr = STDERR,
kernel = Kernel)
@argv = argv
@stdin = stdin
@stdout = stdout
@stderr = stderr
@kernel = kernel
@exit_code = 1
end
# @return []
def execute!
$stdin, $stdout, $stderr = @stdin, @stdout, @stderr
Configuration.configure(argv)
Application.start
@exit_code = 0
rescue StandardError => uncaught_exception
puts uncaught_exception.message
puts uncaught_exception.backtrace.join("\n")
ensure
Vedeu.log("Exiting gracefully.")
$stdin, $stdout, $stderr = STDIN, STDOUT, STDERR
@kernel.exit(exit_code)
end
private
attr_reader :argv
end # Launcher
end # Vedeu
Version data entries
8 entries across 8 versions & 1 rubygems