Module: Faraday::Utils

Extended by:
Utils
Included in:
Utils
Defined in:
lib/faraday/utils.rb

Defined Under Namespace

Classes: Headers, ParamsHash

Constant Summary collapse

ESCAPE_RE =
/[^a-zA-Z0-9 .~_-]/
DEFAULT_SEP =
/[&;] */n

Instance Method Summary collapse

Instance Method Details

#build_nested_query(value, prefix = nil) ⇒ Object

Rack's version modified to handle non-String values



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# File 'lib/faraday/utils.rb', line 157

def build_nested_query(value, prefix = nil)
  case value
  when Array
    value.map { |v| build_nested_query(v, "#{prefix}%5B%5D") }.join("&")
  when Hash
    value.map { |k, v|
      build_nested_query(v, prefix ? "#{prefix}%5B#{escape(k)}%5D" : escape(k))
    }.join("&")
  when NilClass
    prefix
  else
    raise ArgumentError, "value must be a Hash" if prefix.nil?
    "#{prefix}=#{escape(value)}"
  end
end

#build_query(params) ⇒ Object

Copied from Rack



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# File 'lib/faraday/utils.rb', line 146

def build_query(params)
  params.map { |k, v|
    if v.class == Array
      build_query(v.map { |x| [k, x] })
    else
      v.nil? ? escape(k) : "#{escape(k)}=#{escape(v)}"
    end
  }.join("&")
end

#deep_merge(source, hash) ⇒ Object

Recursive hash merge



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# File 'lib/faraday/utils.rb', line 264

def deep_merge(source, hash)
  deep_merge!(source.dup, hash)
end

#deep_merge!(target, hash) ⇒ Object

Recursive hash update



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# File 'lib/faraday/utils.rb', line 252

def deep_merge!(target, hash)
  hash.each do |key, value|
    if Hash === value and Hash === target[key]
      target[key] = deep_merge(target[key], value)
    else
      target[key] = value
    end
  end
  target
end

#escape(s) ⇒ Object



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# File 'lib/faraday/utils.rb', line 175

def escape(s)
  s.to_s.gsub(ESCAPE_RE) {
    '%' + $&.unpack('H2' * $&.bytesize).join('%').upcase
  }.tr(' ', '+')
end

#normalize_params(params, name, v = nil) ⇒ Object

Stolen from Rack



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# File 'lib/faraday/utils.rb', line 214

def normalize_params(params, name, v = nil)
  name =~ %r(\A[\[\]]*([^\[\]]+)\]*)
  k = $1 || ''
  after = $' || ''

  return if k.empty?

  if after == ""
    params[k] = v
  elsif after == "[]"
    params[k] ||= []
    raise TypeError, "expected Array (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Array)
    params[k] << v
  elsif after =~ %r(^\[\]\[([^\[\]]+)\]$) || after =~ %r(^\[\](.+)$)
    child_key = $1
    params[k] ||= []
    raise TypeError, "expected Array (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Array)
    if params[k].last.is_a?(Hash) && !params[k].last.key?(child_key)
      normalize_params(params[k].last, child_key, v)
    else
      params[k] << normalize_params({}, child_key, v)
    end
  else
    params[k] ||= {}
    raise TypeError, "expected Hash (got #{params[k].class.name}) for param `#{k}'" unless params[k].is_a?(Hash)
    params[k] = normalize_params(params[k], after, v)
  end

  return params
end

#normalize_path(url) ⇒ Object

Receives a URL and returns just the path with the query string sorted.



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# File 'lib/faraday/utils.rb', line 246

def normalize_path(url)
  (url.path != "" ? url.path : "/") +
  (url.query ? "?#{sort_query_params(url.query)}" : "")
end

#parse_nested_query(qs) ⇒ Object



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# File 'lib/faraday/utils.rb', line 203

def parse_nested_query(qs)
  params = {}

  (qs || '').split(DEFAULT_SEP).each do |p|
    k, v = p.split('=', 2).map { |s| unescape(s) }
    normalize_params(params, k, v)
  end
  params
end

#parse_query(qs) ⇒ Object

Adapted from Rack



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# File 'lib/faraday/utils.rb', line 186

def parse_query(qs)
  params = {}

  (qs || '').split(DEFAULT_SEP).each do |p|
    k, v = p.split('=', 2).map { |x| unescape(x) }

    if cur = params[k]
      if cur.class == Array then params[k] << v
      else params[k] = [cur, v]
      end
    else
      params[k] = v
    end
  end
  params
end

#unescape(s) ⇒ Object



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# File 'lib/faraday/utils.rb', line 181

def unescape(s) CGI.unescape s.to_s end