@angular/http
Version:
Angular - the http service
170 lines • 18.4 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as tslib_1 from "tslib";
/**
* Polyfill for [Headers](https://developer.mozilla.org/en-US/docs/Web/API/Headers/Headers), as
* specified in the [Fetch Spec](https://fetch.spec.whatwg.org/#headers-class).
*
* The only known difference between this `Headers` implementation and the spec is the
* lack of an `entries` method.
*
* @usageNotes
* ### Example
*
* ```
* import {Headers} from '@angular/http';
*
* var firstHeaders = new Headers();
* firstHeaders.append('Content-Type', 'image/jpeg');
* console.log(firstHeaders.get('Content-Type')) //'image/jpeg'
*
* // Create headers from Plain Old JavaScript Object
* var secondHeaders = new Headers({
* 'X-My-Custom-Header': 'Angular'
* });
* console.log(secondHeaders.get('X-My-Custom-Header')); //'Angular'
*
* var thirdHeaders = new Headers(secondHeaders);
* console.log(thirdHeaders.get('X-My-Custom-Header')); //'Angular'
* ```
*
* @deprecated see https://angular.io/guide/http
* @publicApi
*/
var Headers = /** @class */ (function () {
// TODO(vicb): any -> string|string[]
function Headers(headers) {
var _this = this;
/** @internal header names are lower case */
this._headers = new Map();
/** @internal map lower case names to actual names */
this._normalizedNames = new Map();
if (!headers) {
return;
}
if (headers instanceof Headers) {
headers.forEach(function (values, name) {
values.forEach(function (value) { return _this.append(name, value); });
});
return;
}
Object.keys(headers).forEach(function (name) {
var values = Array.isArray(headers[name]) ? headers[name] : [headers[name]];
_this.delete(name);
values.forEach(function (value) { return _this.append(name, value); });
});
}
/**
* Returns a new Headers instance from the given DOMString of Response Headers
*/
Headers.fromResponseHeaderString = function (headersString) {
var headers = new Headers();
headersString.split('\n').forEach(function (line) {
var index = line.indexOf(':');
if (index > 0) {
var name_1 = line.slice(0, index);
var value = line.slice(index + 1).trim();
headers.set(name_1, value);
}
});
return headers;
};
/**
* Appends a header to existing list of header values for a given header name.
*/
Headers.prototype.append = function (name, value) {
var values = this.getAll(name);
if (values === null) {
this.set(name, value);
}
else {
values.push(value);
}
};
/**
* Deletes all header values for the given name.
*/
Headers.prototype.delete = function (name) {
var lcName = name.toLowerCase();
this._normalizedNames.delete(lcName);
this._headers.delete(lcName);
};
Headers.prototype.forEach = function (fn) {
var _this = this;
this._headers.forEach(function (values, lcName) { return fn(values, _this._normalizedNames.get(lcName), _this._headers); });
};
/**
* Returns first header that matches given name.
*/
Headers.prototype.get = function (name) {
var values = this.getAll(name);
if (values === null) {
return null;
}
return values.length > 0 ? values[0] : null;
};
/**
* Checks for existence of header by given name.
*/
Headers.prototype.has = function (name) { return this._headers.has(name.toLowerCase()); };
/**
* Returns the names of the headers
*/
Headers.prototype.keys = function () { return Array.from(this._normalizedNames.values()); };
/**
* Sets or overrides header value for given name.
*/
Headers.prototype.set = function (name, value) {
if (Array.isArray(value)) {
if (value.length) {
this._headers.set(name.toLowerCase(), [value.join(',')]);
}
}
else {
this._headers.set(name.toLowerCase(), [value]);
}
this.mayBeSetNormalizedName(name);
};
/**
* Returns values of all headers.
*/
Headers.prototype.values = function () { return Array.from(this._headers.values()); };
/**
* Returns string of all headers.
*/
// TODO(vicb): returns {[name: string]: string[]}
Headers.prototype.toJSON = function () {
var _this = this;
var serialized = {};
this._headers.forEach(function (values, name) {
var split = [];
values.forEach(function (v) { return split.push.apply(split, tslib_1.__spread(v.split(','))); });
serialized[_this._normalizedNames.get(name)] = split;
});
return serialized;
};
/**
* Returns list of header values for a given name.
*/
Headers.prototype.getAll = function (name) {
return this.has(name) ? this._headers.get(name.toLowerCase()) || null : null;
};
/**
* This method is not implemented.
*/
Headers.prototype.entries = function () { throw new Error('"entries" method is not implemented on Headers class'); };
Headers.prototype.mayBeSetNormalizedName = function (name) {
var lcName = name.toLowerCase();
if (!this._normalizedNames.has(lcName)) {
this._normalizedNames.set(lcName, name);
}
};
return Headers;
}());
export { Headers };
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All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n/**\n * Polyfill for [Headers](https://developer.mozilla.org/en-US/docs/Web/API/Headers/Headers), as\n * specified in the [Fetch Spec](https://fetch.spec.whatwg.org/#headers-class).\n *\n * The only known difference between this `Headers` implementation and the spec is the\n * lack of an `entries` method.\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * import {Headers} from '@angular/http';\n *\n * var firstHeaders = new Headers();\n * firstHeaders.append('Content-Type', 'image/jpeg');\n * console.log(firstHeaders.get('Content-Type')) //'image/jpeg'\n *\n * // Create headers from Plain Old JavaScript Object\n * var secondHeaders = new Headers({\n *   'X-My-Custom-Header': 'Angular'\n * });\n * console.log(secondHeaders.get('X-My-Custom-Header')); //'Angular'\n *\n * var thirdHeaders = new Headers(secondHeaders);\n * console.log(thirdHeaders.get('X-My-Custom-Header')); //'Angular'\n * ```\n *\n * @deprecated see https://angular.io/guide/http\n * @publicApi\n */\nexport class Headers {\n  /** @internal header names are lower case */\n  _headers: Map<string, string[]> = new Map();\n  /** @internal map lower case names to actual names */\n  _normalizedNames: Map<string, string> = new Map();\n\n  // TODO(vicb): any -> string|string[]\n  constructor(headers?: Headers|{[name: string]: any}|null) {\n    if (!headers) {\n      return;\n    }\n\n    if (headers instanceof Headers) {\n      headers.forEach((values: string[], name: string) => {\n        values.forEach(value => this.append(name, value));\n      });\n      return;\n    }\n\n    Object.keys(headers).forEach((name: string) => {\n      const values: string[] = Array.isArray(headers[name]) ? headers[name] : [headers[name]];\n      this.delete(name);\n      values.forEach(value => this.append(name, value));\n    });\n  }\n\n  /**\n   * Returns a new Headers instance from the given DOMString of Response Headers\n   */\n  static fromResponseHeaderString(headersString: string): Headers {\n    const headers = new Headers();\n\n    headersString.split('\\n').forEach(line => {\n      const index = line.indexOf(':');\n      if (index > 0) {\n        const name = line.slice(0, index);\n        const value = line.slice(index + 1).trim();\n        headers.set(name, value);\n      }\n    });\n\n    return headers;\n  }\n\n  /**\n   * Appends a header to existing list of header values for a given header name.\n   */\n  append(name: string, value: string): void {\n    const values = this.getAll(name);\n\n    if (values === null) {\n      this.set(name, value);\n    } else {\n      values.push(value);\n    }\n  }\n\n  /**\n   * Deletes all header values for the given name.\n   */\n  delete (name: string): void {\n    const lcName = name.toLowerCase();\n    this._normalizedNames.delete(lcName);\n    this._headers.delete(lcName);\n  }\n\n  forEach(fn: (values: string[], name: string|undefined, headers: Map<string, string[]>) => void):\n      void {\n    this._headers.forEach(\n        (values, lcName) => fn(values, this._normalizedNames.get(lcName), this._headers));\n  }\n\n  /**\n   * Returns first header that matches given name.\n   */\n  get(name: string): string|null {\n    const values = this.getAll(name);\n\n    if (values === null) {\n      return null;\n    }\n\n    return values.length > 0 ? values[0] : null;\n  }\n\n  /**\n   * Checks for existence of header by given name.\n   */\n  has(name: string): boolean { return this._headers.has(name.toLowerCase()); }\n\n  /**\n   * Returns the names of the headers\n   */\n  keys(): string[] { return Array.from(this._normalizedNames.values()); }\n\n  /**\n   * Sets or overrides header value for given name.\n   */\n  set(name: string, value: string|string[]): void {\n    if (Array.isArray(value)) {\n      if (value.length) {\n        this._headers.set(name.toLowerCase(), [value.join(',')]);\n      }\n    } else {\n      this._headers.set(name.toLowerCase(), [value]);\n    }\n    this.mayBeSetNormalizedName(name);\n  }\n\n  /**\n   * Returns values of all headers.\n   */\n  values(): string[][] { return Array.from(this._headers.values()); }\n\n  /**\n   * Returns string of all headers.\n   */\n  // TODO(vicb): returns {[name: string]: string[]}\n  toJSON(): {[name: string]: any} {\n    const serialized: {[name: string]: string[]} = {};\n\n    this._headers.forEach((values: string[], name: string) => {\n      const split: string[] = [];\n      values.forEach(v => split.push(...v.split(',')));\n      serialized[this._normalizedNames.get(name) !] = split;\n    });\n\n    return serialized;\n  }\n\n  /**\n   * Returns list of header values for a given name.\n   */\n  getAll(name: string): string[]|null {\n    return this.has(name) ? this._headers.get(name.toLowerCase()) || null : null;\n  }\n\n  /**\n   * This method is not implemented.\n   */\n  entries() { throw new Error('\"entries\" method is not implemented on Headers class'); }\n\n  private mayBeSetNormalizedName(name: string): void {\n    const lcName = name.toLowerCase();\n\n    if (!this._normalizedNames.has(lcName)) {\n      this._normalizedNames.set(lcName, name);\n    }\n  }\n}\n"]}