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Contents
module Webby
module Filters
# The Slides filter is used to generate an S5 presentation from HTML input
# text. The input HTML is scanned for <h1> tags and slide divs are inserted
# before each <h1> tag found.
#
# When the HTML is rendered into the presentation layout, the result is an
# S5 presentation -- provided that the layout includes the appropriate S5
# javascript and CSS files.
#
class Slides
START_SLIDE = %{<div class="slide">#$/}
END_SLIDE = %{</div>#$/#$/}
# call-seq:
# Slides.new( html )
#
# Creates a new slides filter that will operate on the given
# _html_ string.
#
def initialize( str )
@str = str
@open = false
end
# call-seq:
# filter => html
#
# Process the original html document passed to the filter when it was
# created. The document will be scanned for H1 heading tags and slide
# divs will be inserted into the page before each H1 tag that is found.
#
def filter
result = []
@str.split(%r/\<h1/i).each do |slide|
next if slide.strip.empty?
result << START_SLIDE << '<h1' << slide << END_SLIDE
end
result.join
end
end # class Slides
# Insert slide divs into the input HTML text.
#
register :slides do |input|
Slides.new(input).filter
end
end # module Filters
end # module Webby
# EOF
Version data entries
5 entries across 5 versions & 4 rubygems