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module Gem
###
# This module is used for safely loading YAML specs from a gem. The
# `safe_load` method defined on this module is specifically designed for
# loading Gem specifications. For loading other YAML safely, please see
# Psych.safe_load
module SafeYAML
PERMITTED_CLASSES = %w(
Symbol
Time
Date
Gem::Dependency
Gem::Platform
Gem::Requirement
Gem::Specification
Gem::Version
Gem::Version::Requirement
YAML::Syck::DefaultKey
Syck::DefaultKey
).freeze
PERMITTED_SYMBOLS = %w(
development
runtime
).freeze
if ::YAML.respond_to? :safe_load
def self.safe_load(input)
if Gem::Version.new(Psych::VERSION) >= Gem::Version.new('3.1.0.pre1')
::YAML.safe_load(input, permitted_classes: PERMITTED_CLASSES, permitted_symbols: PERMITTED_SYMBOLS, aliases: true)
else
::YAML.safe_load(input, PERMITTED_CLASSES, PERMITTED_SYMBOLS, true)
end
end
def self.load(input)
if Gem::Version.new(Psych::VERSION) >= Gem::Version.new('3.1.0.pre1')
::YAML.safe_load(input, permitted_classes: [::Symbol])
else
::YAML.safe_load(input, [::Symbol])
end
end
else
unless Gem::Deprecate.skip
warn "YAML safe loading is not available. Please upgrade psych to a version that supports safe loading (>= 2.0)."
end
def self.safe_load(input, *args)
::YAML.load input
end
def self.load(input)
::YAML.load input
end
end
end
end
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