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/*!
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
*
* Licensed 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.
*/
const JSONPointer = {
extractParentPointer(pointer) {
return pointer.replace(/\/[^\/]+$/, '');
},
extractLastPart(pointer) {
const [,lastPart] = pointer.match(/\/([^\/]+)$/) || [];
return lastPart;
},
extractParts(pointer = '') {
return pointer.split('/').slice(1)
.map(part => part.replace(/~1/g, '/'))
.map(part => part.replace(/~0/g, '~'));
},
getValue(object, pointer) {
let parts = JSONPointer.extractParts(pointer);
return parts.reduce((object, part) => object && object[part], object);
},
setValue(object, pointer, value) {
let clone = obj => Array.isArray(obj) ? [...obj] : {...obj};
let parts = JSONPointer.extractParts(pointer),
newObject = clone(object),
subObject = object,
subNewObject = newObject;
for(let i = 0, n = parts.length - 1; i < n; ++i) {
let nextSubObject = subObject && subObject[parts[i]];
subNewObject = subNewObject[parts[i]] = nextSubObject ? clone(nextSubObject) : {};
subObject = nextSubObject;
}
subNewObject[parts[parts.length - 1]] = value;
return newObject;
}
};
export default JSONPointer;
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