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July 9, 2010 17:11
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# If ActiveSupport is loaded, then great - use it. But we don't | |
# want a dependency on it, so if it's not present, define the few | |
# extensions that we want to use... | |
unless defined? ActiveSupport | |
# These are ActiveSupport-;like extensions to do a few handy things in the gems | |
# Derived from ActiveSupport, so the AS copyright notice applies: | |
# | |
# | |
# | |
# Copyright (c) 2005 David Heinemeier Hansson | |
# | |
# 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. | |
#++ | |
# | |
# | |
class String #:nodoc: | |
# Constantize tries to find a declared constant with the name specified | |
# in the string. It raises a NameError when the name is not in CamelCase | |
# or is not initialized. | |
# | |
# Examples | |
# "Module".constantize #=> Module | |
# "Class".constantize #=> Class | |
def constantize() | |
unless /\A(?:::)?([A-Z]\w*(?:::[A-Z]\w*)*)\z/ =~ self | |
raise NameError, "#{self.inspect} is not a valid constant name!" | |
end | |
Object.module_eval("::#{$1}", __FILE__, __LINE__) | |
end | |
def camelize() | |
self.dup.split(/_/).map{ |word| word.capitalize }.join('') | |
end | |
end | |
class Object #:nodoc: | |
# "", " ", nil, [], and {} are blank | |
def blank? | |
if respond_to?(:empty?) && respond_to?(:strip) | |
empty? or strip.empty? | |
elsif respond_to?(:empty?) | |
empty? | |
else | |
!self | |
end | |
end | |
end | |
class NilClass #:nodoc: | |
def blank? | |
true | |
end | |
end | |
class FalseClass #:nodoc: | |
def blank? | |
true | |
end | |
end | |
class TrueClass #:nodoc: | |
def blank? | |
false | |
end | |
end | |
class Array #:nodoc: | |
alias_method :blank?, :empty? | |
end | |
class Hash #:nodoc: | |
alias_method :blank?, :empty? | |
# Return a new hash with all keys converted to symbols. | |
def symbolize_keys | |
inject({}) do |options, (key, value)| | |
options[key.to_sym] = value | |
options | |
end | |
end | |
end | |
class String #:nodoc: | |
def blank? | |
empty? || strip.empty? | |
end | |
end | |
class Numeric #:nodoc: | |
def blank? | |
false | |
end | |
end | |
end |
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