101 lines
2.5 KiB
Ruby
101 lines
2.5 KiB
Ruby
# --
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# Copyright (C) 2008-2009 10gen Inc.
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License, version 3, as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
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# for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# ++
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require 'rexml/document'
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require 'mongo'
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# Converts a .xson file (an XML file that describes a Mongo-type document) to
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# an OrderedHash.
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class XMLToRuby
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include XGen::Mongo::Driver
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def xml_to_ruby(io)
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doc = REXML::Document.new(io)
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doc_to_ruby(doc.root.elements['doc'])
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end
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protected
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def element_to_ruby(e)
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type = e.name
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child = e.elements[1]
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case type
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when 'oid'
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ObjectID.from_string(e.text)
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when 'ref'
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dbref_to_ruby(e.elements)
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when 'int'
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e.text.to_i
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when 'number'
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e.text.to_f
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when 'string', 'code'
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e.text.to_s
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when 'binary'
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Base64.decode64(e.text.to_s).to_mongo_binary
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when 'symbol'
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e.text.to_s.intern
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when 'boolean'
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e.text.to_s == 'true'
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when 'array'
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array_to_ruby(e.elements)
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when 'date'
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Time.at(e.text.to_f / 1000.0)
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when 'regex'
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regex_to_ruby(e.elements)
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when 'null', 'undefined'
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nil
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when 'doc'
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doc_to_ruby(e)
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else
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raise "Unknown type #{type} in element with name #{e.attributes['name']}"
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end
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end
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def doc_to_ruby(element)
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oh = OrderedHash.new
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element.elements.each { |e| oh[e.attributes['name']] = element_to_ruby(e) }
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oh
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end
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def array_to_ruby(elements)
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a = []
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elements.each { |e|
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index_str = e.attributes['name']
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a[index_str.to_i] = element_to_ruby(e)
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}
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a
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end
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def regex_to_ruby(elements)
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pattern = elements['pattern'].text
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options_str = elements['options'].text || ''
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options = 0
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options |= Regexp::IGNORECASE if options_str.include?('i')
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options |= Regexp::MULTILINE if options_str.include?('m')
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options |= Regexp::EXTENDED if options_str.include?('x')
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Regexp.new(pattern, options)
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end
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def dbref_to_ruby(elements)
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ns = elements['ns'].text
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oid_str = elements['oid'].text
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DBRef.new(nil, nil, nil, ns, ObjectID.from_string(oid_str))
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end
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end
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