forked from savonrb/nori
/
xml_utility_node.rb
234 lines (197 loc) · 6.9 KB
/
xml_utility_node.rb
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
require "rexml/text"
require "date"
require "time"
require "yaml"
require "bigdecimal"
require "nori/string_with_attributes"
require "nori/string_io_file"
module Nori
# This is a slighly modified version of the XMLUtilityNode from
# http://merb.devjavu.com/projects/merb/ticket/95 (has.sox@gmail.com)
#
# John Nunemaker:
# It's mainly just adding vowels, as I ht cd wth n vwls :)
# This represents the hard part of the work, all I did was change the
# underlying parser.
class XMLUtilityNode
# Simple xs:time Regexp.
XS_TIME = /\d{2}:\d{2}:\d{2}/
# Simple xs:date Regexp.
XS_DATE = /\d{4}-\d{2}-\d{2}/
# Simple xs:dateTime Regexp.
XS_DATE_TIME = /\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/
def self.typecasts
@@typecasts
end
def self.typecasts=(obj)
@@typecasts = obj
end
def self.available_typecasts
@@available_typecasts
end
def self.available_typecasts=(obj)
@@available_typecasts = obj
end
self.typecasts = {}
self.typecasts["integer"] = lambda { |v| v.nil? ? nil : v.to_i }
self.typecasts["boolean"] = lambda { |v| v.nil? ? nil : (v.strip != "false") }
self.typecasts["datetime"] = lambda { |v| v.nil? ? nil : Time.parse(v).utc }
self.typecasts["date"] = lambda { |v| v.nil? ? nil : Date.parse(v) }
self.typecasts["dateTime"] = lambda { |v| v.nil? ? nil : Time.parse(v).utc }
self.typecasts["decimal"] = lambda { |v| v.nil? ? nil : BigDecimal(v.to_s) }
self.typecasts["double"] = lambda { |v| v.nil? ? nil : v.to_f }
self.typecasts["float"] = lambda { |v| v.nil? ? nil : v.to_f }
self.typecasts["symbol"] = lambda { |v| v.nil? ? nil : v.to_sym }
self.typecasts["string"] = lambda { |v| v.to_s }
self.typecasts["yaml"] = lambda { |v| v.nil? ? nil : YAML.load(v) }
self.typecasts["base64Binary"] = lambda { |v| v.unpack('m').first }
self.available_typecasts = self.typecasts.keys
def initialize(name, normalized_attributes = {})
# unnormalize attribute values
attributes = Hash[* normalized_attributes.map do |key, value|
[ key, unnormalize_xml_entities(value) ]
end.flatten]
@name = name.tr("-", "_")
@name = @name.split(":").last if Nori.strip_namespaces?
@name = Nori.convert_tag(@name) if Nori.convert_tags?
# leave the type alone if we don't know what it is
@type = self.class.available_typecasts.include?(attributes["type"]) ? attributes.delete("type") : attributes["type"]
@nil_element = false
attributes.keys.each do |key|
if result = /^((.*):)?nil$/.match(key)
@nil_element = attributes.delete(key) == "true"
attributes.delete("xmlns:#{result[2]}") if result[1]
end
end
@attributes = undasherize_keys(attributes)
@children = []
@text = false
end
attr_accessor :name, :attributes, :children, :type
def prefixed_attributes
attributes.inject({}) do |memo, (key, value)|
memo[prefixed_attribute_name("@#{key}")] = value
memo
end
end
def prefixed_attribute_name(attribute)
Nori.convert_tags? ? Nori.convert_tag(attribute) : attribute
end
def add_node(node)
@text = true if node.is_a? String
@children << node
end
def to_hash
if @type == "file"
f = StringIOFile.new((@children.first || '').unpack('m').first)
f.original_filename = attributes['name'] || 'untitled'
f.content_type = attributes['content_type'] || 'application/octet-stream'
return { name => f }
end
if @text
t = typecast_value unnormalize_xml_entities(inner_html)
t = advanced_typecasting(t) if t.is_a?(String) && Nori.advanced_typecasting?
if t.is_a?(String)
t = StringWithAttributes.new(t)
t.attributes = attributes
end
return { name => t }
else
#change repeating groups into an array
groups = @children.inject({}) { |s,e| (s[e.name] ||= []) << e; s }
out = nil
if @type == "array"
out = []
groups.each do |k, v|
if v.size == 1
out << v.first.to_hash.entries.first.last
else
out << v.map{|e| e.to_hash[k]}
end
end
out = out.flatten
else # If Hash
out = {}
groups.each do |k,v|
if v.size == 1
out.merge!(v.first)
else
out.merge!( k => v.map{|e| e.to_hash[k]})
end
end
out.merge! prefixed_attributes unless attributes.empty?
out = out.empty? ? nil : out
end
if @type && out.nil?
{ name => typecast_value(out) }
else
{ name => out }
end
end
end
# Typecasts a value based upon its type. For instance, if
# +node+ has #type == "integer",
# {{[node.typecast_value("12") #=> 12]}}
#
# @param value<String> The value that is being typecast.
#
# @details [:type options]
# "integer"::
# converts +value+ to an integer with #to_i
# "boolean"::
# checks whether +value+, after removing spaces, is the literal
# "true"
# "datetime"::
# Parses +value+ using Time.parse, and returns a UTC Time
# "date"::
# Parses +value+ using Date.parse
#
# @return <Integer, TrueClass, FalseClass, Time, Date, Object>
# The result of typecasting +value+.
#
# @note
# If +self+ does not have a "type" key, or if it's not one of the
# options specified above, the raw +value+ will be returned.
def typecast_value(value)
return value unless @type
proc = self.class.typecasts[@type]
proc.nil? ? value : proc.call(value)
end
def advanced_typecasting(value)
split = value.split
return value if split.size > 1
case split.first
when "true" then true
when "false" then false
when XS_DATE_TIME then DateTime.parse(value)
when XS_DATE then Date.parse(value)
when XS_TIME then Time.parse(value)
else value
end
end
# Take keys of the form foo-bar and convert them to foo_bar
def undasherize_keys(params)
params.keys.each do |key, value|
params[key.tr("-", "_")] = params.delete(key)
end
params
end
# Get the inner_html of the REXML node.
def inner_html
@children.join
end
# Converts the node into a readable HTML node.
#
# @return <String> The HTML node in text form.
def to_html
attributes.merge!(:type => @type ) if @type
"<#{name}#{attributes.to_xml_attributes}>#{@nil_element ? '' : inner_html}</#{name}>"
end
alias to_s to_html
private
# TODO: replace REXML
def unnormalize_xml_entities value
REXML::Text.unnormalize(value)
end
end
end