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Contents
module I18n
module JS
module Utils
# deep_merge by Stefan Rusterholz, see <http://www.ruby-forum.com/topic/142809>.
# The last result is modified to treat `nil` as missing key
MERGER = proc do |_key, v1, v2|
Hash === v1 && Hash === v2 ? v1.merge(v2, &MERGER) : (v2.nil? ? v1 : v2)
end
HASH_NIL_VALUE_CLEANER_PROC = proc do |k, v|
v.kind_of?(Hash) ? (v.delete_if(&HASH_NIL_VALUE_CLEANER_PROC); false) : v.nil?
end
def self.strip_keys_with_nil_values(hash)
hash.dup.delete_if(&HASH_NIL_VALUE_CLEANER_PROC)
end
def self.deep_merge(target_hash, hash) # :nodoc:
target_hash.merge(hash, &MERGER)
end
def self.deep_merge!(target_hash, hash) # :nodoc:
target_hash.merge!(hash, &MERGER)
end
def self.deep_reject(hash, scopes = [], &block)
hash.each_with_object({}) do |(k, v), memo|
unless block.call(k, v, scopes + [k.to_s])
memo[k] = v.kind_of?(Hash) ? deep_reject(v, scopes + [k.to_s], &block) : v
end
end
end
def self.scopes_match?(scopes1, scopes2)
if scopes1.length == scopes2.length
[scopes1, scopes2].transpose.all? do |scope1, scope2|
scope1.to_s == '*' || scope2.to_s == '*' || scope1.to_s == scope2.to_s
end
end
end
def self.deep_key_sort(hash)
# Avoid things like `true` or `1` from YAML which causes error
hash.keys.sort {|a, b| a.to_s <=> b.to_s}.
each_with_object({}) do |key, seed|
value = hash[key]
seed[key] = value.is_a?(Hash) ? deep_key_sort(value) : value
end
end
end
end
end
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