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

Returns a new instance of Mapper.



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

def initialize(routes)
  @routes = routes
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 8

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 12

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

#match_begin_of_optional_components(a, optional) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 34

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

#match_components(a, b) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 23

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

#match_end_of_optional_components(a, optional) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 43

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

#match_optional_components(match, optional, index) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 52

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

#match_this(routes, path) ⇒ Object 



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# File 'lib/microframe/routing/mapper.rb', line 60

def match_this(routes, path)
  match = []; @placeholders = {}; index = 0;
  route = routes.split("/")
  paths = path.split("/")

  return false if route.size < paths.size

  route.each do |a|
    pending_match = true; matched = false; optional = 0;
    b = paths[index]

    while pending_match
      matched = match_components(a, b)
      pending_match = false
      a, optional, pending_match = match_begin_of_optional_components(a, optional) unless matched || pending_match
      a, optional, pending_match = match_end_of_optional_components(a, 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