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# frozen_string_literal: true
require 'uri/common'
module Puma
module Util
module_function
def pipe
IO.pipe
end
# Unescapes a URI escaped string with +encoding+. +encoding+ will be the
# target encoding of the string returned, and it defaults to UTF-8
if defined?(::Encoding)
def unescape(s, encoding = Encoding::UTF_8)
URI.decode_www_form_component(s, encoding)
end
else
def unescape(s, encoding = nil)
URI.decode_www_form_component(s, encoding)
end
end
module_function :unescape
DEFAULT_SEP = /[&;] */n
# Stolen from Mongrel, with some small modifications:
# Parses a query string by breaking it up at the '&'
# and ';' characters. You can also use this to parse
# cookies by changing the characters used in the second
# parameter (which defaults to '&;').
def parse_query(qs, d = nil, &unescaper)
unescaper ||= method(:unescape)
params = {}
(qs || '').split(d ? /[#{d}] */n : DEFAULT_SEP).each do |p|
next if p.empty?
k, v = p.split('=', 2).map(&unescaper)
if cur = params[k]
if cur.class == Array
params[k] << v
else
params[k] = [cur, v]
end
else
params[k] = v
end
end
return params
end
# A case-insensitive Hash that preserves the original case of a
# header when set.
class HeaderHash < Hash
def self.new(hash={})
HeaderHash === hash ? hash : super(hash)
end
def initialize(hash={})
super()
@names = {}
hash.each { |k, v| self[k] = v }
end
def each
super do |k, v|
yield(k, v.respond_to?(:to_ary) ? v.to_ary.join("\n") : v)
end
end
def to_hash
hash = {}
each { |k,v| hash[k] = v }
hash
end
def [](k)
super(k) || super(@names[k.downcase])
end
def []=(k, v)
canonical = k.downcase
delete k if @names[canonical] && @names[canonical] != k # .delete is expensive, don't invoke it unless necessary
@names[k] = @names[canonical] = k
super k, v
end
def delete(k)
canonical = k.downcase
result = super @names.delete(canonical)
@names.delete_if { |name,| name.downcase == canonical }
result
end
def include?(k)
@names.include?(k) || @names.include?(k.downcase)
end
alias_method :has_key?, :include?
alias_method :member?, :include?
alias_method :key?, :include?
def merge!(other)
other.each { |k, v| self[k] = v }
self
end
def merge(other)
hash = dup
hash.merge! other
end
def replace(other)
clear
other.each { |k, v| self[k] = v }
self
end
end
end
end
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