Class: Microframe::Mapper

Inherits:
Object
  • Object
show all
Defined in:
lib/microframe/routing/mapper.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(routes) ⇒ Mapper 



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# File 'lib/microframe/routing/mapper.rb', line 4

def initialize(routes)
  @routes = routes
  @placeholders = {};
end

Instance Attribute Details

#placeholders ⇒ Object (readonly)

Returns the value of attribute placeholders.



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# File 'lib/microframe/routing/mapper.rb', line 3

def placeholders
  @placeholders
end

#routes ⇒ Object (readonly)

Returns the value of attribute routes.



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# File 'lib/microframe/routing/mapper.rb', line 3

def routes
  @routes
end

Class Method Details

.start(route) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 9

def self.start(route)
  new(route)
end

Instance Method Details

#map(verb, path) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 13

def map(verb, path)
  value = nil
  if routes[verb]
    routes[verb].each do |route, target|
      if match_this(route, path)
        value = target
        break
      end
    end
  end
  value
end

#match_begin_of_optional_components(defined_elt, optional) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 37

def match_begin_of_optional_components(defined_elt, optional)
  if defined_elt[-1] == "("
    optional += 1
    defined_elt.sub!("(", "")
    changed = true
  end
  return defined_elt, optional, changed
end

#match_components(defined_elt, incoming_elt) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 26

def match_components(defined_elt, incoming_elt)
  found = false
  if defined_elt == incoming_elt
    found = true
  elsif defined_elt[0] == ":" && defined_elt[-1] != ")" && defined_elt[-1] != "(" && !incoming_elt.nil?
    @placeholders[defined_elt[1..-1].to_sym] = incoming_elt
    found = true
  end
  return found
end

#match_end_of_optional_components(defined_elt, optional) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 46

def match_end_of_optional_components(defined_elt, optional)
  if defined_elt[-1] == ")"
    optional -= 1
    defined_elt.sub!(")", "")
    changed = true
  end
  return defined_elt, optional, changed
end

#match_optional_components(match, optional, index) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 55

def match_optional_components(match, optional, index)
  if optional > 0
    match = true
    index -= 1
  end
  return match, index, match
end

#match_this(defined, incoming) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 63

def match_this(defined, incoming)
  match = []; index = 0;
  defined_route = defined.split("/")
  incoming_route = incoming.split("/")

  return false if defined_route.size < incoming_route.size

  defined_route.each do |route_elt|
    pending_match = true; matched = false; optional = 0;
    incoming_elt = incoming_route[index]

    while pending_match
      matched = match_components(route_elt, incoming_elt)
      pending_match = false
      route_elt, optional, pending_match = match_begin_of_optional_components(route_elt, optional) unless matched || pending_match
      route_elt, optional, pending_match = match_end_of_optional_components(route_elt, optional) unless matched || pending_match
      matched, index, pending_match = match_optional_components(matched, optional, index) unless matched || pending_match
    end

    match << matched
    index += 1
  end
  !match.include? false
end