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#
# Copyright (C) 2001, 2002, 2003 by Michael Neumann (mneumann@ntecs.de)
#
# $Id: create.rb 36958 2012-09-13 02:22:10Z zzak $
#
require "date"
require "xmlrpc/base64"
module XMLRPC # :nodoc:
module XMLWriter
class Abstract
def ele(name, *children)
element(name, nil, *children)
end
def tag(name, txt)
element(name, nil, text(txt))
end
end
class Simple < Abstract
def document_to_str(doc)
doc
end
def document(*params)
params.join("")
end
def pi(name, *params)
"<?#{name} " + params.join(" ") + " ?>"
end
def element(name, attrs, *children)
raise "attributes not yet implemented" unless attrs.nil?
if children.empty?
"<#{name}/>"
else
"<#{name}>" + children.join("") + "</#{name}>"
end
end
def text(txt)
cleaned = txt.dup
cleaned.gsub!(/&/, '&')
cleaned.gsub!(/</, '<')
cleaned.gsub!(/>/, '>')
cleaned
end
end # class Simple
class XMLParser < Abstract
def initialize
require "xmltreebuilder"
end
def document_to_str(doc)
doc.to_s
end
def document(*params)
XML::SimpleTree::Document.new(*params)
end
def pi(name, *params)
XML::SimpleTree::ProcessingInstruction.new(name, *params)
end
def element(name, attrs, *children)
XML::SimpleTree::Element.new(name, attrs, *children)
end
def text(txt)
XML::SimpleTree::Text.new(txt)
end
end # class XMLParser
Classes = [Simple, XMLParser]
# yields an instance of each installed XML writer
def self.each_installed_writer
XMLRPC::XMLWriter::Classes.each do |klass|
begin
yield klass.new
rescue LoadError
end
end
end
end # module XMLWriter
# Creates XML-RPC call/response documents
#
class Create
def initialize(xml_writer = nil)
@writer = xml_writer || Config::DEFAULT_WRITER.new
end
def methodCall(name, *params)
name = name.to_s
if name !~ /[a-zA-Z0-9_.:\/]+/
raise ArgumentError, "Wrong XML-RPC method-name"
end
parameter = params.collect do |param|
@writer.ele("param", conv2value(param))
end
tree = @writer.document(
@writer.pi("xml", 'version="1.0"'),
@writer.ele("methodCall",
@writer.tag("methodName", name),
@writer.ele("params", *parameter)
)
)
@writer.document_to_str(tree) + "\n"
end
#
# Generates a XML-RPC methodResponse document
#
# When +is_ret+ is +false+ then the +params+ array must
# contain only one element, which is a structure
# of a fault return-value.
#
# When +is_ret+ is +true+ then a normal
# return-value of all the given +params+ is created.
#
def methodResponse(is_ret, *params)
if is_ret
resp = params.collect do |param|
@writer.ele("param", conv2value(param))
end
resp = [@writer.ele("params", *resp)]
else
if params.size != 1 or params[0] === XMLRPC::FaultException
raise ArgumentError, "no valid fault-structure given"
end
resp = @writer.ele("fault", conv2value(params[0].to_h))
end
tree = @writer.document(
@writer.pi("xml", 'version="1.0"'),
@writer.ele("methodResponse", resp)
)
@writer.document_to_str(tree) + "\n"
end
private
#
# Converts a Ruby object into a XML-RPC <code><value></code> tag
#
def conv2value(param) # :doc:
val = case param
when Fixnum, Bignum
# XML-RPC's int is 32bit int, and Fixnum also may be beyond 32bit
if Config::ENABLE_BIGINT
@writer.tag("i4", param.to_s)
else
if param >= -(2**31) and param <= (2**31-1)
@writer.tag("i4", param.to_s)
else
raise "Bignum is too big! Must be signed 32-bit integer!"
end
end
when TrueClass, FalseClass
@writer.tag("boolean", param ? "1" : "0")
when Symbol
@writer.tag("string", param.to_s)
when String
@writer.tag("string", param)
when NilClass
if Config::ENABLE_NIL_CREATE
@writer.ele("nil")
else
raise "Wrong type NilClass. Not allowed!"
end
when Float
raise "Wrong value #{param}. Not allowed!" unless param.finite?
@writer.tag("double", param.to_s)
when Struct
h = param.members.collect do |key|
value = param[key]
@writer.ele("member",
@writer.tag("name", key.to_s),
conv2value(value)
)
end
@writer.ele("struct", *h)
when Hash
# TODO: can a Hash be empty?
h = param.collect do |key, value|
@writer.ele("member",
@writer.tag("name", key.to_s),
conv2value(value)
)
end
@writer.ele("struct", *h)
when Array
# TODO: can an Array be empty?
a = param.collect {|v| conv2value(v) }
@writer.ele("array",
@writer.ele("data", *a)
)
when Time, Date, ::DateTime
@writer.tag("dateTime.iso8601", param.strftime("%Y%m%dT%H:%M:%S"))
when XMLRPC::DateTime
@writer.tag("dateTime.iso8601",
format("%.4d%02d%02dT%02d:%02d:%02d", *param.to_a))
when XMLRPC::Base64
@writer.tag("base64", param.encoded)
else
if Config::ENABLE_MARSHALLING and param.class.included_modules.include? XMLRPC::Marshallable
# convert Ruby object into Hash
ret = {"___class___" => param.class.name}
param.instance_variables.each {|v|
name = v[1..-1]
val = param.instance_variable_get(v)
if val.nil?
ret[name] = val if Config::ENABLE_NIL_CREATE
else
ret[name] = val
end
}
return conv2value(ret)
else
ok, pa = wrong_type(param)
if ok
return conv2value(pa)
else
raise "Wrong type!"
end
end
end
@writer.ele("value", val)
end
def wrong_type(value)
false
end
end # class Create
end # module XMLRPC
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