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Contents
# Copyright, 2016, by Samuel G. D. Williams. <http://www.codeotaku.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
module Samovar
class One
def initialize(key, description, pattern: //, default: nil, required: false)
@key = key
@description = description
@pattern = pattern
@default = default
@required = required
end
attr :key
attr :description
attr :pattern
attr :default
attr :required
def to_s
"<#{@key}>"
end
def to_a
usage = [to_s, @description]
if @default
usage << "(default: #{@default.inspect})"
elsif @required
usage << "(required)"
end
return usage
end
def parse(input, parent = nil, default = nil)
if input.first =~ @pattern
input.shift
elsif default ||= @default
return default
elsif @required
raise MissingValueError.new(parent, self)
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems