@ngx-pwa/local-storage
Version:
Efficient local storage module for Angular: simple API based on native localStorage API, but internally stored via the asynchronous IndexedDB API for performance, and wrapped in RxJS observables to be homogeneous with other Angular modules.
234 lines • 25.9 kB
JavaScript
import { Injectable } from '@angular/core';
import * as i0 from "@angular/core";
export class JSONValidator {
/**
* Validate a JSON data against a Jsubset of the JSON Schema standard.
* Types are enforced to validate everything: each schema must
* @param data JSON data to validate
* @param schema Subset of JSON Schema. Must have a `type`.
* @returns If data is valid: `true`, if it is invalid: `false`
* @see {@link https://github.com/cyrilletuzi/angular-async-local-storage/blob/master/docs/VALIDATION.md}
*/
validate(data, schema) {
switch (schema.type) {
case 'string':
return this.validateString(data, schema);
case 'number':
case 'integer':
return this.validateNumber(data, schema);
case 'boolean':
return this.validateBoolean(data, schema);
case 'array':
return this.validateArray(data, schema);
case 'object':
return this.validateObject(data, schema);
}
}
/**
* Validate a string
* @param data Data to validate
* @param schema Schema describing the string
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateString(data, schema) {
if (typeof data !== 'string') {
return false;
}
if (!this.validateConst(data, schema)) {
return false;
}
if (!this.validateEnum(data, schema)) {
return false;
}
if ((schema.maxLength !== undefined) && (data.length > schema.maxLength)) {
return false;
}
if ((schema.minLength !== undefined) && (data.length < schema.minLength)) {
return false;
}
if (schema.pattern) {
let regularExpression = null;
try {
regularExpression = new RegExp(schema.pattern);
}
catch (_a) { }
if (regularExpression && !regularExpression.test(data)) {
return false;
}
}
return true;
}
/**
* Validate a number or an integer
* @param data Data to validate
* @param schema Schema describing the number or integer
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateNumber(data, schema) {
if (typeof data !== 'number') {
return false;
}
if ((schema.type === 'integer') && !Number.isInteger(data)) {
return false;
}
if (!this.validateConst(data, schema)) {
return false;
}
if (!this.validateEnum(data, schema)) {
return false;
}
/* Test is done this way to not divide by 0 */
if (schema.multipleOf && !Number.isInteger(data / schema.multipleOf)) {
return false;
}
if ((schema.maximum !== undefined) && (data > schema.maximum)) {
return false;
}
if ((schema.exclusiveMaximum !== undefined) && (data >= schema.exclusiveMaximum)) {
return false;
}
if ((schema.minimum !== undefined) && (data < schema.minimum)) {
return false;
}
if ((schema.exclusiveMinimum !== undefined) && (data <= schema.exclusiveMinimum)) {
return false;
}
return true;
}
/**
* Validate a boolean
* @param data Data to validate
* @param schema Schema describing the boolean
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateBoolean(data, schema) {
if (typeof data !== 'boolean') {
return false;
}
if (!this.validateConst(data, schema)) {
return false;
}
return true;
}
/**
* Validate an array
* @param data Data to validate
* @param schema Schema describing the array
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateArray(data, schema) {
if (!Array.isArray(data)) {
return false;
}
if ((schema.maxItems !== undefined) && (data.length > schema.maxItems)) {
return false;
}
if ((schema.minItems !== undefined) && (data.length < schema.minItems)) {
return false;
}
if (schema.uniqueItems) {
/* Create a set to eliminate values with multiple occurences */
const dataSet = new Set(data);
if (data.length !== dataSet.size) {
return false;
}
}
/* Specific test for tuples */
if (Array.isArray(schema.items)) {
return this.validateTuple(data, schema.items);
}
/* Validate all the values in array */
for (const value of data) {
if (!this.validate(value, schema.items)) {
return false;
}
}
return true;
}
/**
* Validate a tuple (array with fixed length and multiple types)
* @param data Data to validate
* @param schemas Schemas describing the tuple
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateTuple(data, schemas) {
/* Tuples have a fixed length */
if (data.length !== schemas.length) {
return false;
}
for (let i = 0; i < schemas.length; i += 1) {
if (!this.validate(data[i], schemas[i])) {
return false;
}
}
return true;
}
/**
* Validate an object
* @param data Data to validate
* @param schema JSON schema describing the object
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateObject(data, schema) {
/* Check the type and if not `null` as `null` also have the type `object` in old browsers */
if ((typeof data !== 'object') || (data === null)) {
return false;
}
/* Check if the object doesn't have more properties than expected
* Equivalent of `additionalProperties: false`
*/
if (Object.keys(schema.properties).length < Object.keys(data).length) {
return false;
}
/* Validate required properties */
if (schema.required) {
for (const requiredProp of schema.required) {
if (!data.hasOwnProperty(requiredProp)) {
return false;
}
}
}
/* Recursively validate all properties */
for (const property in schema.properties) {
/* Filter to keep only real properties (no internal JS stuff) and check if the data has the property too */
if (schema.properties.hasOwnProperty(property) && data.hasOwnProperty(property)) {
if (!this.validate(data[property], schema.properties[property])) {
return false;
}
}
}
return true;
}
/**
* Validate a constant
* @param data Data ta validate
* @param schema JSON schema describing the constant
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateConst(data, schema) {
if (!schema.const) {
return true;
}
return (data === schema.const);
}
/**
* Validate an enum
* @param data Data ta validate
* @param schema JSON schema describing the enum
* @returns If data is valid: `true`, if it is invalid: `false`
*/
validateEnum(data, schema) {
if (!schema.enum) {
return true;
}
/* Cast as the data can be of multiple types, and so TypeScript is lost */
return (schema.enum.includes(data));
}
}
JSONValidator.ɵprov = i0.ɵɵdefineInjectable({ factory: function JSONValidator_Factory() { return new JSONValidator(); }, token: JSONValidator, providedIn: "root" });
JSONValidator.decorators = [
{ type: Injectable, args: [{
providedIn: 'root'
},] }
];
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{ Injectable } from '@angular/core';\n\nimport {\n  JSONSchema, JSONSchemaString, JSONSchemaInteger, JSONSchemaNumber, JSONSchemaBoolean,\n  JSONSchemaArray, JSONSchemaObject\n} from './json-schema';\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class JSONValidator {\n\n  /**\n   * Validate a JSON data against a Jsubset of the JSON Schema standard.\n   * Types are enforced to validate everything: each schema must\n   * @param data JSON data to validate\n   * @param schema Subset of JSON Schema. Must have a `type`.\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   * @see {@link https://github.com/cyrilletuzi/angular-async-local-storage/blob/master/docs/VALIDATION.md}\n   */\n  validate(data: unknown, schema: JSONSchema): boolean {\n\n    switch (schema.type) {\n\n      case 'string':\n        return this.validateString(data, schema);\n      case 'number':\n      case 'integer':\n        return this.validateNumber(data, schema);\n      case 'boolean':\n        return this.validateBoolean(data, schema);\n      case 'array':\n        return this.validateArray(data, schema);\n      case 'object':\n        return this.validateObject(data, schema);\n\n    }\n\n  }\n\n  /**\n   * Validate a string\n   * @param data Data to validate\n   * @param schema Schema describing the string\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateString(data: unknown, schema: JSONSchemaString): boolean {\n\n    if (typeof data !== 'string') {\n      return false;\n    }\n\n    if (!this.validateConst(data, schema)) {\n      return false;\n    }\n\n    if (!this.validateEnum(data, schema)) {\n      return false;\n    }\n\n    if ((schema.maxLength !== undefined) && (data.length > schema.maxLength)) {\n      return false;\n    }\n\n    if ((schema.minLength !== undefined) && (data.length < schema.minLength)) {\n      return false;\n    }\n\n    if (schema.pattern) {\n\n      let regularExpression: RegExp | null = null;\n\n      try {\n        regularExpression = new RegExp(schema.pattern);\n      } catch {}\n\n      if (regularExpression && !regularExpression.test(data)) {\n        return false;\n      }\n\n    }\n\n    return true;\n\n  }\n\n  /**\n   * Validate a number or an integer\n   * @param data Data to validate\n   * @param schema Schema describing the number or integer\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateNumber(data: unknown, schema: JSONSchemaNumber | JSONSchemaInteger): boolean {\n\n    if (typeof data !== 'number') {\n      return false;\n    }\n\n    if ((schema.type === 'integer') && !Number.isInteger(data)) {\n      return false;\n    }\n\n    if (!this.validateConst(data, schema)) {\n      return false;\n    }\n\n    if (!this.validateEnum(data, schema)) {\n      return false;\n    }\n\n    /* Test is done this way to not divide by 0 */\n    if (schema.multipleOf && !Number.isInteger(data / schema.multipleOf)) {\n      return false;\n    }\n\n    if ((schema.maximum !== undefined) && (data > schema.maximum)) {\n        return false;\n    }\n\n    if ((schema.exclusiveMaximum !== undefined) && (data >= schema.exclusiveMaximum)) {\n      return false;\n\n    }\n\n    if ((schema.minimum !== undefined) && (data < schema.minimum)) {\n      return false;\n\n    }\n\n    if ((schema.exclusiveMinimum !== undefined) && (data <= schema.exclusiveMinimum)) {\n        return false;\n    }\n\n    return true;\n\n  }\n\n  /**\n   * Validate a boolean\n   * @param data Data to validate\n   * @param schema Schema describing the boolean\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateBoolean(data: unknown, schema: JSONSchemaBoolean): boolean {\n\n    if (typeof data !== 'boolean') {\n      return false;\n    }\n\n    if (!this.validateConst(data, schema)) {\n      return false;\n    }\n\n    return true;\n\n  }\n\n  /**\n   * Validate an array\n   * @param data Data to validate\n   * @param schema Schema describing the array\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateArray(data: unknown, schema: JSONSchemaArray): boolean {\n\n    if (!Array.isArray(data)) {\n      return false;\n    }\n\n    if ((schema.maxItems !== undefined) && (data.length > schema.maxItems)) {\n      return false;\n    }\n\n    if ((schema.minItems !== undefined) && (data.length < schema.minItems)) {\n      return false;\n    }\n\n    if (schema.uniqueItems) {\n\n      /* Create a set to eliminate values with multiple occurences */\n      const dataSet = new Set(data);\n\n      if (data.length !== dataSet.size) {\n        return false;\n      }\n\n    }\n\n    /* Specific test for tuples */\n    if (Array.isArray(schema.items)) {\n\n      return this.validateTuple(data, schema.items);\n\n    }\n\n    /* Validate all the values in array */\n    for (const value of data) {\n\n      if (!this.validate(value, schema.items)) {\n        return false;\n      }\n\n    }\n\n    return true;\n\n  }\n\n  /**\n   * Validate a tuple (array with fixed length and multiple types)\n   * @param data Data to validate\n   * @param schemas Schemas describing the tuple\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateTuple(data: unknown[], schemas: JSONSchema[]): boolean {\n\n    /* Tuples have a fixed length */\n    if (data.length !== schemas.length) {\n\n      return false;\n\n    }\n\n    for (let i = 0; i < schemas.length; i += 1) {\n\n      if (!this.validate(data[i], schemas[i])) {\n        return false;\n      }\n\n    }\n\n    return true;\n\n  }\n\n  /**\n   * Validate an object\n   * @param data Data to validate\n   * @param schema JSON schema describing the object\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateObject(data: unknown, schema: JSONSchemaObject): boolean {\n\n    /* Check the type and if not `null` as `null` also have the type `object` in old browsers */\n    if ((typeof data !== 'object') || (data === null)) {\n      return false;\n    }\n\n    /* Check if the object doesn't have more properties than expected\n     * Equivalent of `additionalProperties: false`\n     */\n    if (Object.keys(schema.properties).length < Object.keys(data).length) {\n      return false;\n    }\n\n    /* Validate required properties */\n    if (schema.required) {\n\n      for (const requiredProp of schema.required) {\n\n        if (!data.hasOwnProperty(requiredProp)) {\n          return false;\n        }\n\n      }\n\n    }\n\n    /* Recursively validate all properties */\n    for (const property in schema.properties) {\n\n      /* Filter to keep only real properties (no internal JS stuff) and check if the data has the property too */\n      if (schema.properties.hasOwnProperty(property) && data.hasOwnProperty(property)) {\n\n        if (!this.validate((data as { [k: string]: unknown; })[property], schema.properties[property])) {\n          return false;\n        }\n\n      }\n\n    }\n\n    return true;\n\n  }\n\n  /**\n   * Validate a constant\n   * @param data Data ta validate\n   * @param schema JSON schema describing the constant\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateConst(data: unknown, schema: JSONSchemaBoolean | JSONSchemaInteger | JSONSchemaNumber | JSONSchemaString): boolean {\n\n    if (!schema.const) {\n      return true;\n    }\n\n    return (data === schema.const);\n\n  }\n\n  /**\n   * Validate an enum\n   * @param data Data ta validate\n   * @param schema JSON schema describing the enum\n   * @returns If data is valid: `true`, if it is invalid: `false`\n   */\n  protected validateEnum(data: unknown, schema: JSONSchemaInteger | JSONSchemaNumber | JSONSchemaString): boolean {\n\n    if (!schema.enum) {\n      return true;\n    }\n\n    /* Cast as the data can be of multiple types, and so TypeScript is lost */\n    return ((schema.enum as unknown[]).includes(data));\n\n  }\n\n}\n"]}