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Contents
module Clamp
module Option
module Parsing
protected
def parse_options
while remaining_arguments.first =~ /\A-/
switch = remaining_arguments.shift
break if switch == "--"
case switch
when /\A(-\w)(.+)\z/m # combined short options
switch = $1
if find_option(switch).flag?
remaining_arguments.unshift("-" + $2)
else
remaining_arguments.unshift($2)
end
when /\A(--[^=]+)=(.*)\z/m
switch = $1
remaining_arguments.unshift($2)
end
option = find_option(switch)
value = option.extract_value(switch, remaining_arguments)
begin
option.of(self).take(value)
rescue ArgumentError => e
signal_usage_error "option '#{switch}': #{e.message}"
end
end
# Fill in gap from environment
self.class.recognised_options.each do |option|
option.of(self).default_from_environment
end
# Verify that all required options are present
self.class.recognised_options.each do |option|
# If this option is required and the value is nil, there's an error.
if option.required? and send(option.attribute_name).nil?
message = "option '#{option.switches.first}'"
if option.environment_variable
message += " (or env #{option.environment_variable})"
end
message += " is required"
signal_usage_error message
end
end
end
private
def find_option(switch)
self.class.find_option(switch) ||
signal_usage_error("Unrecognised option '#{switch}'")
end
end
end
end
Version data entries
70 entries across 66 versions & 18 rubygems