module Rack::Utils

Constants

DEFAULT_SEP

Public Class Methods

bytesize(string) click to toggle source
# File lib/ext/rack/utils.rb, line 59
def self.bytesize(string)
  string.bytesize
end
escape(s) click to toggle source
# File lib/ext/rack/utils.rb, line 15
def self.escape(s)
  s.to_s.gsub(/([^ a-zA-Z0-9_.-]+)/n) {
    '%'+$1.unpack('H2'*bytesize($1)).join('%').upcase
  }.tr(' ', '+')
end
key_space_limit() click to toggle source
# File lib/ext/rack/utils.rb, line 9
def self.key_space_limit
  @@key_space_limit
end
key_space_limit=(value) click to toggle source
# File lib/ext/rack/utils.rb, line 5
def self.key_space_limit=(value)
  @@key_space_limit = value
end
parse_query(qs, d = nil) click to toggle source
# File lib/ext/rack/utils.rb, line 28
def self.parse_query(qs, d = nil)
  params = {}

  max_key_space = key_space_limit
  bytes = 0

  (qs || '').split(d ? /[#{d}] */n : DEFAULT_SEP).each do |p|
    k, v = p.split('=', 2).map { |x| unescape(x) }

    if k
      bytes += k.size
      if bytes > max_key_space
        raise RangeError, "exceeded available parameter key space"
      end
    end

    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
unescape(s) click to toggle source

Unescapes a URI escaped string. (Stolen from Camping).

# File lib/ext/rack/utils.rb, line 22
def self.unescape(s)
  s.tr('+', ' ').gsub(/((?:%[0-9a-fA-F]{2})+)/n){
    [$1.delete('%')].pack('H*')
  }
end