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Contents
# encoding: utf-8
# Collection of utility methods
# @author Gernot Kogler
module XapianDb
module Utilities
extend self
# Convert a string to camel case
# @param [String] The string to camelize
# @return [String] The camelized string
def camelize(string)
string.split(/[^a-z0-9]/i).map{|w| w.capitalize}.join
end
# Taken from Rails
def constantize(camel_cased_word)
names = camel_cased_word.split('::')
names.shift if names.empty? || names.first.empty?
names.inject(Object) do |constant, name|
if constant == Object
constant.const_get(name)
else
candidate = constant.const_get(name)
next candidate if constant.const_defined?(name, false)
next candidate unless Object.const_defined?(name)
# Go down the ancestors to check it it's owned
# directly before we reach Object or the end of ancestors.
constant = constant.ancestors.inject do |const, ancestor|
break const if ancestor == Object
break ancestor if ancestor.const_defined?(name, false)
const
end
# owner is in Object, so raise
constant.const_get(name, false)
end
end
end
# Taken from Rails
def assert_valid_keys(hash, *valid_keys)
unknown_keys = hash.keys - [valid_keys].flatten
raise(ArgumentError, "Unsupported option(s) detected: #{unknown_keys.join(", ")}") unless unknown_keys.empty?
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems