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require 'pathname'
module HamlHelper
#
# acts like haml_tag, capture_haml, or haml_concat, depending on how it is called.
#
# two or more args --> like haml_tag
# one arg and a block --> like haml_tag
# zero args and a block --> like capture_haml
# one arg and no block --> like haml_concat
#
# additionally, we allow the use of more than one class.
#
# some examples of these usages:
#
# def display_robot(robot)
# haml do # like capture_haml
# haml '.head', robot.head_html # like haml_tag
# haml '.head' do # same
# haml robot.head_html
# end
# haml '.body.metal', robot.body_html # like haml_tag, but with multiple classes
# haml '<a href="/x">link</a>' # like haml_concat
# end
# end
#
# wrapping the helper in a capture_haml call is very useful, because then
# the helper can be used wherever a normal helper would be.
#
def haml(name=nil, *args, &block)
if name
if args.empty? and block.nil?
haml_concat name
else
if name =~ /^(.*?\.[^\.]*)(\..*)$/
# allow chaining of classes if there are multiple '.' in the first arg
name = $1
classes = $2.gsub('.',' ')
hsh = args.detect{|i| i.is_a?(Hash)}
unless hsh
hsh = {}
args << hsh
end
hsh[:class] = classes
end
haml_tag(name, *args, &block)
end
else
capture_haml(&block)
end
end
end
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