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# This file use notugly.xsl: An XSL transform to pretty up the SVG output from Graphviz
#
# See: http://www.hokstad.com/making-graphviz-output-pretty-with-xsl.html
# And: http://www.hokstad.com/making-graphviz-output-pretty-with-xsl-updated.html
#
# By Vidar Hokstad and Ryan Shea; Contributions by Jonas Tingborn,
# Earl Cummings, Michael Kennedy (Graphviz 2.20.2 compatibility, bug fixes,
# testing, lots of gradients)
# Libs should not require rubygmes, commenting out
# require 'rubygems'
begin
require 'xml/xslt'
XSLT_METHOD = :xml_xslt_transform
rescue LoadError => e
require 'libxml'
require 'libxslt'
XSLT_METHOD = :libxslt_transform
end
class GraphViz
# Transform to pretty up the SVG output
#
# For more information, see http://www.hokstad.com/making-graphviz-output-pretty-with-xsl.html
# and http://www.hokstad.com/making-graphviz-output-pretty-with-xsl-updated.html
#
# You can use the :nothugly option to GraphViz#output :
#
# graph.output( :svg => "myGraph.svg", :nothugly => true )
#
# Or directly on an SVG output graph :
#
# GraphViz.nothugly( "myGraph.svg" )
def self.nothugly( file, save = true )
xsl = File.join( File.dirname(File.expand_path(__FILE__)), "nothugly", "nothugly.xsl" )
out = self.send(XSLT_METHOD, file, xsl)
if save
fname = File.join( File.dirname(File.expand_path(file)), File.basename(file))
File.open( fname, "w" ) { |io|
io.print out
}
else
return out
end
end
def self.xml_xslt_transform(xml, xsl)
xslt = XML::XSLT.new()
xslt.xml = xml
xslt.xsl = xsl
xslt.serve()
end
def self.libxslt_transform(xml, xsl)
LibXML::XML.default_load_external_dtd = false
LibXML::XML.default_substitute_entities = false
stylesheet_doc = LibXML::XML::Document.file(xsl)
stylesheet = LibXSLT::XSLT::Stylesheet.new(stylesheet_doc)
xml_doc = LibXML::XML::Document.file(xml)
stylesheet.apply(xml_doc).to_s
end
end
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