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Contents
require 'webgen/tag'
require 'uri'
module Webgen::Tag
# Makes a path relative. This is very useful for templates. For example, you normally include a
# stylesheet in a template. If you specify the filename of the stylesheet directly, the reference
# to the stylesheet in the output file of a page file that is not in the same directory as the
# template would be invalid.
#
# By using the +relocatable+ tag you ensure that the path stays valid.
class Relocatable
include Webgen::Tag::Base
# Return the relativized path for the path provided in the tag definition.
def call(tag, body, context)
uri_string = param('tag.relocatable.path')
result = ''
unless uri_string.nil?
begin
uri = URI.parse(uri_string)
if uri.absolute?
result = uri_string
else
result = resolve_path(uri_string, context)
end
if result.empty?
log(:error) { "Could not resolve path '#{uri_string}' in <#{context.ref_node.absolute_lcn}>" }
context.dest_node.dirty = true
end
rescue URI::InvalidURIError => e
log(:error) { "Error while parsing path for tag relocatable in <#{context.ref_node.absolute_lcn}>: #{e.message}" }
context.dest_node.dirty = true
end
end
result
end
#######
private
#######
# Resolve the path +uri+ using the reference node and return the correct relative path from the
# destination node.
def resolve_path(uri, context)
dest_node = context.ref_node.resolve(uri, context.dest_node.lang)
(dest_node ? context.dest_node.route_to(dest_node) : '')
end
end
end
Version data entries
8 entries across 8 versions & 2 rubygems