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
|
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# JSON data conversion functions
try:
import json
except:
from django.utils import simplejson as json
from StringIO import StringIO
from util import *
from elemutil import *
# Return true if a list represents a JS array
def isJSArray(l):
if isNull(l):
return True
v = car(l)
if isSymbol(v):
return False
if isList(v):
if not isNull(v) and isSymbol(car(v)):
return False
return True
# Converts JSON properties to values
def jsPropertiesToValues(propertiesSoFar, o, i):
if isNull(i):
return propertiesSoFar
p = car(i)
jsv = o[p]
v = jsValToValue(jsv)
if isinstance(p, basestring):
n = str(p)
if n[0:1] == "@":
return jsPropertiesToValues(cons((attribute, "'" + n[1:], v), propertiesSoFar), o, cdr(i))
if isList(v) and not isJSArray(v):
return jsPropertiesToValues(cons(cons(element, cons("'" + n, v)), propertiesSoFar), o, cdr(i))
return jsPropertiesToValues(cons((element, "'" + n, v), propertiesSoFar), o, cdr(i))
return jsPropertiesToValues(cons(v, propertiesSoFar), o, cdr(i))
# Converts a JSON val to a value
def jsValToValue(jsv):
if jsv is None:
return None
if isinstance(jsv, dict):
return jsPropertiesToValues((), jsv, tuple(jsv.keys()))
if isList(jsv):
return jsPropertiesToValues((), jsv, tuple(reversed(range(0, len(jsv)))))
if isinstance(jsv, basestring):
return str(jsv)
return jsv
# Return true if a list of strings contains a JSON document
def isJSON(l):
if isNull(l):
return False
s = car(l)[0:1]
return s == "[" or s == "{"
# Convert a list of strings representing a JSON document to a list of values
def readJSON(l):
s = StringIO()
writeStrings(l, s)
val = json.loads(s.getvalue())
return jsValToValue(val)
# Convert a list of values to JSON array elements
def valuesToJSElements(a, l, i):
if isNull(l):
return a
pv = valueToJSVal(car(l))
a[i] = pv
return valuesToJSElements(a, cdr(l), i + 1)
# Convert a value to a JSON value
def valueToJSVal(v):
if not isList(v):
return v
if isJSArray(v):
return valuesToJSElements(list(range(0, len(v))), v, 0)
return valuesToJSProperties({}, v)
# Convert a list of values to JSON properties
def valuesToJSProperties(o, l):
if isNull(l):
return o
token = car(l)
if isTaggedList(token, attribute):
pv = valueToJSVal(attributeValue(token))
o["@" + attributeName(token)[1:]] = pv
elif isTaggedList(token, element):
if elementHasValue(token):
pv = valueToJSVal(elementValue(token))
o[elementName(token)[1:]] = pv
else:
child = {}
o[elementName(token)[1:]] = child
valuesToJSProperties(child, elementChildren(token))
return valuesToJSProperties(o, cdr(l))
# Convert a list of values to a list of strings representing a JSON document
def writeJSON(l):
if isJSArray(l):
jsv = valuesToJSElements(list(range(0, len(l))), l, 0)
else:
jsv = valuesToJSProperties({}, l)
s = json.dumps(jsv, separators=(',',':'))
return (s,)
# Convert a list + params to a JSON-RPC request
def jsonRequest(id, func, params):
r = (("'id", id), ("'method", func), ("'params", params))
return writeJSON(valuesToElements(r))
# Convert a value to a JSON-RPC result
def jsonResult(id, val):
return writeJSON(valuesToElements((("'id", id), ("'result", val))))
# Convert a JSON-RPC result to a value
def jsonResultValue(s):
jsres = readJSON(s)
res = elementsToValues(jsres)
val = cadr(assoc("'result", res))
if isList(val) and not isJSArray(val):
return (val,)
return val
# Return a portable function name from a JSON-RPC function name
def funcName(f):
if f.startswith("."):
return f[1:]
if f.startswith("system."):
return f[7:]
if f.startswith("Service."):
return f[8:]
return f
|
