Class: Waves::Matchers::Path

Inherits:
Base show all
Defined in:
lib/matchers/path.rb

Instance Attribute Summary

Attributes inherited from Base

#constraints

Instance Method Summary collapse

Methods inherited from Base

#[], #test

Constructor Details

#initialize(pattern) ⇒ Path

Takes an array of pattern elements … coming soon, support for formatted strings!



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# File 'lib/matchers/path.rb', line 8

def initialize( pattern ) ; @pattern = pattern  ; end

Instance Method Details

#call(request) ⇒ Object

returns a hash of captured values



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# File 'lib/matchers/path.rb', line 11

def call( request )
  if @pattern.is_a? Array
    path = extract_path( request ).reverse
    return {} if @pattern.empty? && path.empty?
    capture = {}
    match = @pattern.all? do | want |
      case want
      when true # same as a Range of 1..-1
        path = [] unless path.empty?
      when Range 
        if want.end == -1
          path = [] if path.length >= want.begin
        else
          path = [] if want.include? path.length
        end
      when String then want == path.pop
      when Symbol then capture[ want ] = path.pop
      when Regexp then want === path.pop
      when Hash
        key, value = want.to_a.first
        case value
        when true
          ( capture[ key ], path = path.reverse, [] ) unless path.empty?
        when Range
          if value.end == -1
            ( capture[ key ], path = path.reverse, [] ) if path.length >= value.begin
          else
            ( capture[ key ], path = path.reverse, [] ) if value.include? path.length
          end
        when String, Symbol
          got = path.pop
          capture[ key ] = got ? got : value.to_s
        when Regexp then
          got = path.pop
          capture[ key ] = got if value === got
        end
      end
    end
    capture if match && path.empty?
  elsif @pattern == true or @pattern == false or @pattern == nil
    {}
  end
end

#extract_path(request) ⇒ Object

just a little helper method



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# File 'lib/matchers/path.rb', line 58

def extract_path( request )
  request.traits.waves.path ||= request.path.scan(/[^\/]+/).map { |e| Rack::Utils.unescape(e) }
end