I was writing some code where I parse some files with libxml and some with
XMLParser. After some effort, I finally realized that there is in
incompatibility with the two libraries:
require 'xmlparser'
xml_string = "<x><y></y></x>"
XMLParser.new.parse(xml_string)
-------# -> No errors
require 'xmlparser'
require 'xml/libxml'
xml_string = "<x><y></y></x>"
XMLParser.new.parse(xml_string)
-------# -> test_sanity.rb:6:in `parse': wrong number of arguments (1 for 0)
(ArgumentError)
from test_sanity.rb:6
Perhaps the XML::Parser#parse method is clobbering XMLParser's method?
If you try to work around this by redefining the parse method in XMLParser:
require 'xmlparser'
class XMLParser
alias_method :diff_name, :parse
end
require 'xml/libxml'
xml_string = "<x><y></y></x>"
XMLParser.new.diff_name(xml_string)
-------# -> test_sanity.rb:10: [BUG] Segmentation fault
ruby 1.8.5 (2006-08-25) [i486-linux]
Aborted (core dumped)
Since these are both very useful xml parsing libraries, it would be nice if
both could be used in the same program...
Does anyone know of any work around in the meantime?
John Prince
UT Austin
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