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from __future__ import print_function
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#!/usr/bin/env python
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# -*- coding: utf8 -*-
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import argparse
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import traceback
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import json
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from IPython.external.jsonschema import Draft3Validator, validate, ValidationError
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import IPython.external.jsonpointer as jsonpointer
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def nbvalidate(nbjson, schema='v3.withref.json', key=None,verbose=True):
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v3schema = resolve_ref(json.load(open(schema,'r')))
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if key :
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v3schema = jsonpointer.resolve_pointer(v3schema,key)
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errors = 0
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v = Draft3Validator(v3schema);
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for error in v.iter_errors(nbjson):
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errors = errors + 1
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if verbose:
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print(error)
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return errors
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def resolve_ref(json, base=None):
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"""return a json with resolved internal references
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only support local reference to the same json
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"""
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if not base :
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base = json
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temp = None
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if type(json) is list:
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temp = [];
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for item in json:
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temp.append(resolve_ref(item, base=base))
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elif type(json) is dict:
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temp = {};
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for key,value in json.iteritems():
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if key == '$ref':
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return resolve_ref(jsonpointer.resolve_pointer(base,value), base=base)
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else :
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temp[key]=resolve_ref(value, base=base)
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else :
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return json
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return temp
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def convert(namein, nameout, indent=2):
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"""resolve the references of namein, save the result in nameout"""
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jsn = None
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with open(namein) as file :
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jsn = json.load(file)
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v = resolve_ref(jsn, base=jsn)
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x = jsonpointer.resolve_pointer(v, '/notebook')
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with open(nameout,'w') as file:
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json.dump(x,file,indent=indent)
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument('-s', '--schema',
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type=str, default='v3.withref.json')
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parser.add_argument('-k', '--key',
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type=str, default='/notebook',
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help='subkey to extract json schema from json file')
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parser.add_argument("-v", "--verbose", action="store_true",
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help="increase output verbosity")
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parser.add_argument('filename',
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type=str,
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help="file to validate",
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nargs='*',
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metavar='names')
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args = parser.parse_args()
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for name in args.filename :
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nerror = nbvalidate(json.load(open(name,'r')),
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schema=args.schema,
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key=args.key,
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verbose=args.verbose)
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if nerror is 0:
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print(u"[Pass]",name)
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else :
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print(u"[ ]",name,'(%d)'%(nerror))
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if args.verbose :
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print('==================================================')
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