source: trip-planner-front/node_modules/json-schema/lib/validate.js@ eed0bf8

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1/**
2 * JSONSchema Validator - Validates JavaScript objects using JSON Schemas
3 * (http://www.json.com/json-schema-proposal/)
4 *
5 * Copyright (c) 2007 Kris Zyp SitePen (www.sitepen.com)
6 * Licensed under the MIT (MIT-LICENSE.txt) license.
7To use the validator call the validate function with an instance object and an optional schema object.
8If a schema is provided, it will be used to validate. If the instance object refers to a schema (self-validating),
9that schema will be used to validate and the schema parameter is not necessary (if both exist,
10both validations will occur).
11The validate method will return an array of validation errors. If there are no errors, then an
12empty list will be returned. A validation error will have two properties:
13"property" which indicates which property had the error
14"message" which indicates what the error was
15 */
16(function (root, factory) {
17 if (typeof define === 'function' && define.amd) {
18 // AMD. Register as an anonymous module.
19 define([], function () {
20 return factory();
21 });
22 } else if (typeof module === 'object' && module.exports) {
23 // Node. Does not work with strict CommonJS, but
24 // only CommonJS-like environments that support module.exports,
25 // like Node.
26 module.exports = factory();
27 } else {
28 // Browser globals
29 root.jsonSchema = factory();
30 }
31}(this, function () {// setup primitive classes to be JSON Schema types
32var exports = validate
33exports.Integer = {type:"integer"};
34var primitiveConstructors = {
35 String: String,
36 Boolean: Boolean,
37 Number: Number,
38 Object: Object,
39 Array: Array,
40 Date: Date
41}
42exports.validate = validate;
43function validate(/*Any*/instance,/*Object*/schema) {
44 // Summary:
45 // To use the validator call JSONSchema.validate with an instance object and an optional schema object.
46 // If a schema is provided, it will be used to validate. If the instance object refers to a schema (self-validating),
47 // that schema will be used to validate and the schema parameter is not necessary (if both exist,
48 // both validations will occur).
49 // The validate method will return an object with two properties:
50 // valid: A boolean indicating if the instance is valid by the schema
51 // errors: An array of validation errors. If there are no errors, then an
52 // empty list will be returned. A validation error will have two properties:
53 // property: which indicates which property had the error
54 // message: which indicates what the error was
55 //
56 return validate(instance, schema, {changing: false});//, coerce: false, existingOnly: false});
57 };
58exports.checkPropertyChange = function(/*Any*/value,/*Object*/schema, /*String*/property) {
59 // Summary:
60 // The checkPropertyChange method will check to see if an value can legally be in property with the given schema
61 // This is slightly different than the validate method in that it will fail if the schema is readonly and it will
62 // not check for self-validation, it is assumed that the passed in value is already internally valid.
63 // The checkPropertyChange method will return the same object type as validate, see JSONSchema.validate for
64 // information.
65 //
66 return validate(value, schema, {changing: property || "property"});
67 };
68var validate = exports._validate = function(/*Any*/instance,/*Object*/schema,/*Object*/options) {
69
70 if (!options) options = {};
71 var _changing = options.changing;
72
73 function getType(schema){
74 return schema.type || (primitiveConstructors[schema.name] == schema && schema.name.toLowerCase());
75 }
76 var errors = [];
77 // validate a value against a property definition
78 function checkProp(value, schema, path,i){
79
80 var l;
81 path += path ? typeof i == 'number' ? '[' + i + ']' : typeof i == 'undefined' ? '' : '.' + i : i;
82 function addError(message){
83 errors.push({property:path,message:message});
84 }
85
86 if((typeof schema != 'object' || schema instanceof Array) && (path || typeof schema != 'function') && !(schema && getType(schema))){
87 if(typeof schema == 'function'){
88 if(!(value instanceof schema)){
89 addError("is not an instance of the class/constructor " + schema.name);
90 }
91 }else if(schema){
92 addError("Invalid schema/property definition " + schema);
93 }
94 return null;
95 }
96 if(_changing && schema.readonly){
97 addError("is a readonly field, it can not be changed");
98 }
99 if(schema['extends']){ // if it extends another schema, it must pass that schema as well
100 checkProp(value,schema['extends'],path,i);
101 }
102 // validate a value against a type definition
103 function checkType(type,value){
104 if(type){
105 if(typeof type == 'string' && type != 'any' &&
106 (type == 'null' ? value !== null : typeof value != type) &&
107 !(value instanceof Array && type == 'array') &&
108 !(value instanceof Date && type == 'date') &&
109 !(type == 'integer' && value%1===0)){
110 return [{property:path,message:(typeof value) + " value found, but a " + type + " is required"}];
111 }
112 if(type instanceof Array){
113 var unionErrors=[];
114 for(var j = 0; j < type.length; j++){ // a union type
115 if(!(unionErrors=checkType(type[j],value)).length){
116 break;
117 }
118 }
119 if(unionErrors.length){
120 return unionErrors;
121 }
122 }else if(typeof type == 'object'){
123 var priorErrors = errors;
124 errors = [];
125 checkProp(value,type,path);
126 var theseErrors = errors;
127 errors = priorErrors;
128 return theseErrors;
129 }
130 }
131 return [];
132 }
133 if(value === undefined){
134 if(schema.required){
135 addError("is missing and it is required");
136 }
137 }else{
138 errors = errors.concat(checkType(getType(schema),value));
139 if(schema.disallow && !checkType(schema.disallow,value).length){
140 addError(" disallowed value was matched");
141 }
142 if(value !== null){
143 if(value instanceof Array){
144 if(schema.items){
145 var itemsIsArray = schema.items instanceof Array;
146 var propDef = schema.items;
147 for (i = 0, l = value.length; i < l; i += 1) {
148 if (itemsIsArray)
149 propDef = schema.items[i];
150 if (options.coerce)
151 value[i] = options.coerce(value[i], propDef);
152 errors.concat(checkProp(value[i],propDef,path,i));
153 }
154 }
155 if(schema.minItems && value.length < schema.minItems){
156 addError("There must be a minimum of " + schema.minItems + " in the array");
157 }
158 if(schema.maxItems && value.length > schema.maxItems){
159 addError("There must be a maximum of " + schema.maxItems + " in the array");
160 }
161 }else if(schema.properties || schema.additionalProperties){
162 errors.concat(checkObj(value, schema.properties, path, schema.additionalProperties));
163 }
164 if(schema.pattern && typeof value == 'string' && !value.match(schema.pattern)){
165 addError("does not match the regex pattern " + schema.pattern);
166 }
167 if(schema.maxLength && typeof value == 'string' && value.length > schema.maxLength){
168 addError("may only be " + schema.maxLength + " characters long");
169 }
170 if(schema.minLength && typeof value == 'string' && value.length < schema.minLength){
171 addError("must be at least " + schema.minLength + " characters long");
172 }
173 if(typeof schema.minimum !== undefined && typeof value == typeof schema.minimum &&
174 schema.minimum > value){
175 addError("must have a minimum value of " + schema.minimum);
176 }
177 if(typeof schema.maximum !== undefined && typeof value == typeof schema.maximum &&
178 schema.maximum < value){
179 addError("must have a maximum value of " + schema.maximum);
180 }
181 if(schema['enum']){
182 var enumer = schema['enum'];
183 l = enumer.length;
184 var found;
185 for(var j = 0; j < l; j++){
186 if(enumer[j]===value){
187 found=1;
188 break;
189 }
190 }
191 if(!found){
192 addError("does not have a value in the enumeration " + enumer.join(", "));
193 }
194 }
195 if(typeof schema.maxDecimal == 'number' &&
196 (value.toString().match(new RegExp("\\.[0-9]{" + (schema.maxDecimal + 1) + ",}")))){
197 addError("may only have " + schema.maxDecimal + " digits of decimal places");
198 }
199 }
200 }
201 return null;
202 }
203 // validate an object against a schema
204 function checkObj(instance,objTypeDef,path,additionalProp){
205
206 if(typeof objTypeDef =='object'){
207 if(typeof instance != 'object' || instance instanceof Array){
208 errors.push({property:path,message:"an object is required"});
209 }
210
211 for(var i in objTypeDef){
212 if(objTypeDef.hasOwnProperty(i)){
213 var value = instance[i];
214 // skip _not_ specified properties
215 if (value === undefined && options.existingOnly) continue;
216 var propDef = objTypeDef[i];
217 // set default
218 if(value === undefined && propDef["default"]){
219 value = instance[i] = propDef["default"];
220 }
221 if(options.coerce && i in instance){
222 value = instance[i] = options.coerce(value, propDef);
223 }
224 checkProp(value,propDef,path,i);
225 }
226 }
227 }
228 for(i in instance){
229 if(instance.hasOwnProperty(i) && !(i.charAt(0) == '_' && i.charAt(1) == '_') && objTypeDef && !objTypeDef[i] && additionalProp===false){
230 if (options.filter) {
231 delete instance[i];
232 continue;
233 } else {
234 errors.push({property:path,message:(typeof value) + "The property " + i +
235 " is not defined in the schema and the schema does not allow additional properties"});
236 }
237 }
238 var requires = objTypeDef && objTypeDef[i] && objTypeDef[i].requires;
239 if(requires && !(requires in instance)){
240 errors.push({property:path,message:"the presence of the property " + i + " requires that " + requires + " also be present"});
241 }
242 value = instance[i];
243 if(additionalProp && (!(objTypeDef && typeof objTypeDef == 'object') || !(i in objTypeDef))){
244 if(options.coerce){
245 value = instance[i] = options.coerce(value, additionalProp);
246 }
247 checkProp(value,additionalProp,path,i);
248 }
249 if(!_changing && value && value.$schema){
250 errors = errors.concat(checkProp(value,value.$schema,path,i));
251 }
252 }
253 return errors;
254 }
255 if(schema){
256 checkProp(instance,schema,'',_changing || '');
257 }
258 if(!_changing && instance && instance.$schema){
259 checkProp(instance,instance.$schema,'','');
260 }
261 return {valid:!errors.length,errors:errors};
262};
263exports.mustBeValid = function(result){
264 // summary:
265 // This checks to ensure that the result is valid and will throw an appropriate error message if it is not
266 // result: the result returned from checkPropertyChange or validate
267 if(!result.valid){
268 throw new TypeError(result.errors.map(function(error){return "for property " + error.property + ': ' + error.message;}).join(", \n"));
269 }
270}
271
272return exports;
273}));
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