X-Git-Url: https://git.njae.me.uk/?a=blobdiff_plain;f=vendor%2Frails%2Factionpack%2Flib%2Faction_controller%2Frouting%2Fsegments.rb;fp=vendor%2Frails%2Factionpack%2Flib%2Faction_controller%2Frouting%2Fsegments.rb;h=4f936d51d28c8a9c513e418d84ab31ad6f0789c4;hb=437aa336c44c74a30aeea16a06743c32747ed661;hp=0000000000000000000000000000000000000000;hpb=97a0772b06264134cfe38e7494f9427efe0840a0;p=feedcatcher.git

diff --git a/vendor/rails/actionpack/lib/action_controller/routing/segments.rb b/vendor/rails/actionpack/lib/action_controller/routing/segments.rb
new file mode 100644
index 0000000..4f936d5
--- /dev/null
+++ b/vendor/rails/actionpack/lib/action_controller/routing/segments.rb
@@ -0,0 +1,343 @@
+module ActionController
+  module Routing
+    class Segment #:nodoc:
+      RESERVED_PCHAR = ':@&=+$,;'
+      SAFE_PCHAR = "#{URI::REGEXP::PATTERN::UNRESERVED}#{RESERVED_PCHAR}"
+      if RUBY_VERSION >= '1.9'
+        UNSAFE_PCHAR = Regexp.new("[^#{SAFE_PCHAR}]", false).freeze
+      else
+        UNSAFE_PCHAR = Regexp.new("[^#{SAFE_PCHAR}]", false, 'N').freeze
+      end
+
+      # TODO: Convert :is_optional accessor to read only
+      attr_accessor :is_optional
+      alias_method :optional?, :is_optional
+
+      def initialize
+        @is_optional = false
+      end
+
+      def number_of_captures
+        Regexp.new(regexp_chunk).number_of_captures
+      end
+
+      def extraction_code
+        nil
+      end
+
+      # Continue generating string for the prior segments.
+      def continue_string_structure(prior_segments)
+        if prior_segments.empty?
+          interpolation_statement(prior_segments)
+        else
+          new_priors = prior_segments[0..-2]
+          prior_segments.last.string_structure(new_priors)
+        end
+      end
+
+      def interpolation_chunk
+        URI.escape(value, UNSAFE_PCHAR)
+      end
+
+      # Return a string interpolation statement for this segment and those before it.
+      def interpolation_statement(prior_segments)
+        chunks = prior_segments.collect { |s| s.interpolation_chunk }
+        chunks << interpolation_chunk
+        "\"#{chunks * ''}\"#{all_optionals_available_condition(prior_segments)}"
+      end
+
+      def string_structure(prior_segments)
+        optional? ? continue_string_structure(prior_segments) : interpolation_statement(prior_segments)
+      end
+
+      # Return an if condition that is true if all the prior segments can be generated.
+      # If there are no optional segments before this one, then nil is returned.
+      def all_optionals_available_condition(prior_segments)
+        optional_locals = prior_segments.collect { |s| s.local_name if s.optional? && s.respond_to?(:local_name) }.compact
+        optional_locals.empty? ? nil : " if #{optional_locals * ' && '}"
+      end
+
+      # Recognition
+
+      def match_extraction(next_capture)
+        nil
+      end
+
+      # Warning
+
+      # Returns true if this segment is optional? because of a default. If so, then
+      # no warning will be emitted regarding this segment.
+      def optionality_implied?
+        false
+      end
+    end
+
+    class StaticSegment < Segment #:nodoc:
+      attr_reader :value, :raw
+      alias_method :raw?, :raw
+
+      def initialize(value = nil, options = {})
+        super()
+        @value = value
+        @raw = options[:raw] if options.key?(:raw)
+        @is_optional = options[:optional] if options.key?(:optional)
+      end
+
+      def interpolation_chunk
+        raw? ? value : super
+      end
+
+      def regexp_chunk
+        chunk = Regexp.escape(value)
+        optional? ? Regexp.optionalize(chunk) : chunk
+      end
+
+      def number_of_captures
+        0
+      end
+
+      def build_pattern(pattern)
+        escaped = Regexp.escape(value)
+        if optional? && ! pattern.empty?
+          "(?:#{Regexp.optionalize escaped}\\Z|#{escaped}#{Regexp.unoptionalize pattern})"
+        elsif optional?
+          Regexp.optionalize escaped
+        else
+          escaped + pattern
+        end
+      end
+
+      def to_s
+        value
+      end
+    end
+
+    class DividerSegment < StaticSegment #:nodoc:
+      def initialize(value = nil, options = {})
+        super(value, {:raw => true, :optional => true}.merge(options))
+      end
+
+      def optionality_implied?
+        true
+      end
+    end
+
+    class DynamicSegment < Segment #:nodoc:
+      attr_reader :key
+
+      # TODO: Convert these accessors to read only
+      attr_accessor :default, :regexp
+
+      def initialize(key = nil, options = {})
+        super()
+        @key = key
+        @default = options[:default] if options.key?(:default)
+        @regexp = options[:regexp] if options.key?(:regexp)
+        @is_optional = true if options[:optional] || options.key?(:default)
+      end
+
+      def to_s
+        ":#{key}"
+      end
+
+      # The local variable name that the value of this segment will be extracted to.
+      def local_name
+        "#{key}_value"
+      end
+
+      def extract_value
+        "#{local_name} = hash[:#{key}] && hash[:#{key}].to_param #{"|| #{default.inspect}" if default}"
+      end
+
+      def value_check
+        if default # Then we know it won't be nil
+          "#{value_regexp.inspect} =~ #{local_name}" if regexp
+        elsif optional?
+          # If we have a regexp check that the value is not given, or that it matches.
+          # If we have no regexp, return nil since we do not require a condition.
+          "#{local_name}.nil? || #{value_regexp.inspect} =~ #{local_name}" if regexp
+        else # Then it must be present, and if we have a regexp, it must match too.
+          "#{local_name} #{"&& #{value_regexp.inspect} =~ #{local_name}" if regexp}"
+        end
+      end
+
+      def expiry_statement
+        "expired, hash = true, options if !expired && expire_on[:#{key}]"
+      end
+
+      def extraction_code
+        s = extract_value
+        vc = value_check
+        s << "\nreturn [nil,nil] unless #{vc}" if vc
+        s << "\n#{expiry_statement}"
+      end
+
+      def interpolation_chunk(value_code = local_name)
+        "\#{URI.escape(#{value_code}.to_s, ActionController::Routing::Segment::UNSAFE_PCHAR)}"
+      end
+
+      def string_structure(prior_segments)
+        if optional? # We have a conditional to do...
+          # If we should not appear in the url, just write the code for the prior
+          # segments. This occurs if our value is the default value, or, if we are
+          # optional, if we have nil as our value.
+          "if #{local_name} == #{default.inspect}\n" +
+            continue_string_structure(prior_segments) +
+          "\nelse\n" + # Otherwise, write the code up to here
+            "#{interpolation_statement(prior_segments)}\nend"
+        else
+          interpolation_statement(prior_segments)
+        end
+      end
+
+      def value_regexp
+        Regexp.new "\\A#{regexp.to_s}\\Z" if regexp
+      end
+
+      def regexp_chunk
+        regexp ? regexp_string : default_regexp_chunk
+      end
+
+      def regexp_string
+        regexp_has_modifiers? ? "(#{regexp.to_s})" : "(#{regexp.source})"
+      end
+
+      def default_regexp_chunk
+        "([^#{Routing::SEPARATORS.join}]+)"
+      end
+
+      def number_of_captures
+        regexp ? regexp.number_of_captures + 1 : 1
+      end
+
+      def build_pattern(pattern)
+        pattern = "#{regexp_chunk}#{pattern}"
+        optional? ? Regexp.optionalize(pattern) : pattern
+      end
+
+      def match_extraction(next_capture)
+        # All non code-related keys (such as :id, :slug) are URI-unescaped as
+        # path parameters.
+        default_value = default ? default.inspect : nil
+        %[
+          value = if (m = match[#{next_capture}])
+            URI.unescape(m)
+          else
+            #{default_value}
+          end
+          params[:#{key}] = value if value
+        ]
+      end
+
+      def optionality_implied?
+        [:action, :id].include? key
+      end
+
+      def regexp_has_modifiers?
+        regexp.options & (Regexp::IGNORECASE | Regexp::EXTENDED) != 0
+      end
+    end
+
+    class ControllerSegment < DynamicSegment #:nodoc:
+      def regexp_chunk
+        possible_names = Routing.possible_controllers.collect { |name| Regexp.escape name }
+        "(?i-:(#{(regexp || Regexp.union(*possible_names)).source}))"
+      end
+
+      # Don't URI.escape the controller name since it may contain slashes.
+      def interpolation_chunk(value_code = local_name)
+        "\#{#{value_code}.to_s}"
+      end
+
+      # Make sure controller names like Admin/Content are correctly normalized to
+      # admin/content
+      def extract_value
+        "#{local_name} = (hash[:#{key}] #{"|| #{default.inspect}" if default}).downcase"
+      end
+
+      def match_extraction(next_capture)
+        if default
+          "params[:#{key}] = match[#{next_capture}] ? match[#{next_capture}].downcase : '#{default}'"
+        else
+          "params[:#{key}] = match[#{next_capture}].downcase if match[#{next_capture}]"
+        end
+      end
+    end
+
+    class PathSegment < DynamicSegment #:nodoc:
+      def interpolation_chunk(value_code = local_name)
+        "\#{#{value_code}}"
+      end
+
+      def extract_value
+        "#{local_name} = hash[:#{key}] && Array(hash[:#{key}]).collect { |path_component| URI.escape(path_component.to_param, ActionController::Routing::Segment::UNSAFE_PCHAR) }.to_param #{"|| #{default.inspect}" if default}"
+      end
+
+      def default
+        ''
+      end
+
+      def default=(path)
+        raise RoutingError, "paths cannot have non-empty default values" unless path.blank?
+      end
+
+      def match_extraction(next_capture)
+        "params[:#{key}] = PathSegment::Result.new_escaped((match[#{next_capture}]#{" || " + default.inspect if default}).split('/'))#{" if match[" + next_capture + "]" if !default}"
+      end
+
+      def default_regexp_chunk
+        "(.*)"
+      end
+
+      def number_of_captures
+        regexp ? regexp.number_of_captures : 1
+      end
+
+      def optionality_implied?
+        true
+      end
+
+      class Result < ::Array #:nodoc:
+        def to_s() join '/' end
+        def self.new_escaped(strings)
+          new strings.collect {|str| URI.unescape str}
+        end
+      end
+    end
+    
+    # The OptionalFormatSegment allows for any resource route to have an optional
+    # :format, which decreases the amount of routes created by 50%.
+    class OptionalFormatSegment < DynamicSegment
+    
+      def initialize(key = nil, options = {})
+        super(:format, {:optional => true}.merge(options))            
+      end
+    
+      def interpolation_chunk
+        "." + super
+      end
+    
+      def regexp_chunk
+        '/|(\.[^/?\.]+)?'
+      end
+    
+      def to_s
+        '(.:format)?'
+      end
+
+      def extract_value
+        "#{local_name} = options[:#{key}] && options[:#{key}].to_s.downcase"
+      end
+
+      #the value should not include the period (.)
+      def match_extraction(next_capture)
+        %[
+          if (m = match[#{next_capture}])
+            params[:#{key}] = URI.unescape(m.from(1))
+          end
+        ]
+      end
+    end
+    
+  end
+end