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Diffstat (limited to 'lib/rexml/formatters/transitive.rb')
-rw-r--r-- | lib/rexml/formatters/transitive.rb | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/rexml/formatters/transitive.rb b/lib/rexml/formatters/transitive.rb new file mode 100644 index 0000000000..1d80f21fbb --- /dev/null +++ b/lib/rexml/formatters/transitive.rb @@ -0,0 +1,56 @@ +require 'rexml/formatters/pretty' + +module REXML + module Formatters + # The Transitive formatter writes an XML document that parses to an + # identical document as the source document. This means that no extra + # whitespace nodes are inserted, and whitespace within text nodes is + # preserved. Within these constraints, the document is pretty-printed, + # with whitespace inserted into the metadata to introduce formatting. + # + # Note that this is only useful if the original XML is not already + # formatted. Since this formatter does not alter whitespace nodes, the + # results of formatting already formatted XML will be odd. + class Transitive < Default + def initialize( indentation=2 ) + @indentation = indentation + @level = 0 + end + + protected + def write_element( node, output ) + output << "<#{node.expanded_name}" + + node.attributes.each_attribute do |attr| + output << " " + attr.write( output ) + end unless node.attributes.empty? + + output << "\n" + output << ' '*@level + if node.children.empty? + output << "/" + else + output << ">" + # If compact and all children are text, and if the formatted output + # is less than the specified width, then try to print everything on + # one line + skip = false + @level += @indentation + node.children.each { |child| + write( child, output ) + } + @level -= @indentation + output << "</#{node.expanded_name}" + output << "\n" + output << ' '*@level + end + output << ">" + end + + def write_text( node, output ) + output << node.to_s() + end + end + end +end |