@angular/common
Version:
Angular - commonly needed directives and services
221 lines • 32 kB
JavaScript
/**
* @license
* Copyright Google LLC 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
*/
/**
* A codec for encoding and decoding URL parts.
*
* @publicApi
**/
export class UrlCodec {
}
/**
* A `UrlCodec` that uses logic from AngularJS to serialize and parse URLs
* and URL parameters.
*
* @publicApi
*/
export class AngularJSUrlCodec {
// https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L15
encodePath(path) {
const segments = path.split('/');
let i = segments.length;
while (i--) {
// decode forward slashes to prevent them from being double encoded
segments[i] = encodeUriSegment(segments[i].replace(/%2F/g, '/'));
}
path = segments.join('/');
return _stripIndexHtml(((path && path[0] !== '/' && '/') || '') + path);
}
// https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L42
encodeSearch(search) {
if (typeof search === 'string') {
search = parseKeyValue(search);
}
search = toKeyValue(search);
return search ? '?' + search : '';
}
// https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L44
encodeHash(hash) {
hash = encodeUriSegment(hash);
return hash ? '#' + hash : '';
}
// https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L27
decodePath(path, html5Mode = true) {
const segments = path.split('/');
let i = segments.length;
while (i--) {
segments[i] = decodeURIComponent(segments[i]);
if (html5Mode) {
// encode forward slashes to prevent them from being mistaken for path separators
segments[i] = segments[i].replace(/\//g, '%2F');
}
}
return segments.join('/');
}
// https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L72
decodeSearch(search) {
return parseKeyValue(search);
}
// https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L73
decodeHash(hash) {
hash = decodeURIComponent(hash);
return hash[0] === '#' ? hash.substring(1) : hash;
}
normalize(pathOrHref, search, hash, baseUrl) {
if (arguments.length === 1) {
const parsed = this.parse(pathOrHref, baseUrl);
if (typeof parsed === 'string') {
return parsed;
}
const serverUrl = `${parsed.protocol}://${parsed.hostname}${parsed.port ? ':' + parsed.port : ''}`;
return this.normalize(this.decodePath(parsed.pathname), this.decodeSearch(parsed.search), this.decodeHash(parsed.hash), serverUrl);
}
else {
const encPath = this.encodePath(pathOrHref);
const encSearch = (search && this.encodeSearch(search)) || '';
const encHash = (hash && this.encodeHash(hash)) || '';
let joinedPath = (baseUrl || '') + encPath;
if (!joinedPath.length || joinedPath[0] !== '/') {
joinedPath = '/' + joinedPath;
}
return joinedPath + encSearch + encHash;
}
}
areEqual(valA, valB) {
return this.normalize(valA) === this.normalize(valB);
}
// https://github.com/angular/angular.js/blob/864c7f0/src/ng/urlUtils.js#L60
parse(url, base) {
try {
// Safari 12 throws an error when the URL constructor is called with an undefined base.
const parsed = !base ? new URL(url) : new URL(url, base);
return {
href: parsed.href,
protocol: parsed.protocol ? parsed.protocol.replace(/:$/, '') : '',
host: parsed.host,
search: parsed.search ? parsed.search.replace(/^\?/, '') : '',
hash: parsed.hash ? parsed.hash.replace(/^#/, '') : '',
hostname: parsed.hostname,
port: parsed.port,
pathname: parsed.pathname.charAt(0) === '/' ? parsed.pathname : '/' + parsed.pathname,
};
}
catch (e) {
throw new Error(`Invalid URL (${url}) with base (${base})`);
}
}
}
function _stripIndexHtml(url) {
return url.replace(/\/index.html$/, '');
}
/**
* Tries to decode the URI component without throwing an exception.
*
* @param str value potential URI component to check.
* @returns the decoded URI if it can be decoded or else `undefined`.
*/
function tryDecodeURIComponent(value) {
try {
return decodeURIComponent(value);
}
catch (e) {
// Ignore any invalid uri component.
return undefined;
}
}
/**
* Parses an escaped url query string into key-value pairs. Logic taken from
* https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1382
*/
function parseKeyValue(keyValue) {
const obj = {};
(keyValue || '').split('&').forEach((keyValue) => {
let splitPoint, key, val;
if (keyValue) {
key = keyValue = keyValue.replace(/\+/g, '%20');
splitPoint = keyValue.indexOf('=');
if (splitPoint !== -1) {
key = keyValue.substring(0, splitPoint);
val = keyValue.substring(splitPoint + 1);
}
key = tryDecodeURIComponent(key);
if (typeof key !== 'undefined') {
val = typeof val !== 'undefined' ? tryDecodeURIComponent(val) : true;
if (!obj.hasOwnProperty(key)) {
obj[key] = val;
}
else if (Array.isArray(obj[key])) {
obj[key].push(val);
}
else {
obj[key] = [obj[key], val];
}
}
}
});
return obj;
}
/**
* Serializes into key-value pairs. Logic taken from
* https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1409
*/
function toKeyValue(obj) {
const parts = [];
for (const key in obj) {
let value = obj[key];
if (Array.isArray(value)) {
value.forEach((arrayValue) => {
parts.push(encodeUriQuery(key, true) +
(arrayValue === true ? '' : '=' + encodeUriQuery(arrayValue, true)));
});
}
else {
parts.push(encodeUriQuery(key, true) +
(value === true ? '' : '=' + encodeUriQuery(value, true)));
}
}
return parts.length ? parts.join('&') : '';
}
/**
* We need our custom method because encodeURIComponent is too aggressive and doesn't follow
* https://tools.ietf.org/html/rfc3986 with regards to the character set (pchar) allowed in path
* segments:
* segment = *pchar
* pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
* pct-encoded = "%" HEXDIG HEXDIG
* unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
* sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
* / "*" / "+" / "," / ";" / "="
*
* Logic from https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1437
*/
function encodeUriSegment(val) {
return encodeUriQuery(val, true).replace(/%26/g, '&').replace(/%3D/gi, '=').replace(/%2B/gi, '+');
}
/**
* This method is intended for encoding *key* or *value* parts of query component. We need a custom
* method because encodeURIComponent is too aggressive and encodes stuff that doesn't have to be
* encoded per https://tools.ietf.org/html/rfc3986:
* query = *( pchar / "/" / "?" )
* pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
* unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
* pct-encoded = "%" HEXDIG HEXDIG
* sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
* / "*" / "+" / "," / ";" / "="
*
* Logic from https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1456
*/
function encodeUriQuery(val, pctEncodeSpaces = false) {
return encodeURIComponent(val)
.replace(/%40/g, '@')
.replace(/%3A/gi, ':')
.replace(/%24/g, '$')
.replace(/%2C/gi, ',')
.replace(/%3B/gi, ';')
.replace(/%20/g, pctEncodeSpaces ? '%20' : '+');
}
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* @license\n * Copyright Google LLC 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 * A codec for encoding and decoding URL parts.\n *\n * @publicApi\n **/\nexport abstract class UrlCodec {\n  /**\n   * Encodes the path from the provided string\n   *\n   * @param path The path string\n   */\n  abstract encodePath(path: string): string;\n\n  /**\n   * Decodes the path from the provided string\n   *\n   * @param path The path string\n   */\n  abstract decodePath(path: string): string;\n\n  /**\n   * Encodes the search string from the provided string or object\n   *\n   * @param path The path string or object\n   */\n  abstract encodeSearch(search: string | {[k: string]: unknown}): string;\n\n  /**\n   * Decodes the search objects from the provided string\n   *\n   * @param path The path string\n   */\n  abstract decodeSearch(search: string): {[k: string]: unknown};\n\n  /**\n   * Encodes the hash from the provided string\n   *\n   * @param path The hash string\n   */\n  abstract encodeHash(hash: string): string;\n\n  /**\n   * Decodes the hash from the provided string\n   *\n   * @param path The hash string\n   */\n  abstract decodeHash(hash: string): string;\n\n  /**\n   * Normalizes the URL from the provided string\n   *\n   * @param path The URL string\n   */\n  abstract normalize(href: string): string;\n\n  /**\n   * Normalizes the URL from the provided string, search, hash, and base URL parameters\n   *\n   * @param path The URL path\n   * @param search The search object\n   * @param hash The has string\n   * @param baseUrl The base URL for the URL\n   */\n  abstract normalize(\n    path: string,\n    search: {[k: string]: unknown},\n    hash: string,\n    baseUrl?: string,\n  ): string;\n\n  /**\n   * Checks whether the two strings are equal\n   * @param valA First string for comparison\n   * @param valB Second string for comparison\n   */\n  abstract areEqual(valA: string, valB: string): boolean;\n\n  /**\n   * Parses the URL string based on the base URL\n   *\n   * @param url The full URL string\n   * @param base The base for the URL\n   */\n  abstract parse(\n    url: string,\n    base?: string,\n  ): {\n    href: string;\n    protocol: string;\n    host: string;\n    search: string;\n    hash: string;\n    hostname: string;\n    port: string;\n    pathname: string;\n  };\n}\n\n/**\n * A `UrlCodec` that uses logic from AngularJS to serialize and parse URLs\n * and URL parameters.\n *\n * @publicApi\n */\nexport class AngularJSUrlCodec implements UrlCodec {\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L15\n  encodePath(path: string): string {\n    const segments = path.split('/');\n    let i = segments.length;\n\n    while (i--) {\n      // decode forward slashes to prevent them from being double encoded\n      segments[i] = encodeUriSegment(segments[i].replace(/%2F/g, '/'));\n    }\n\n    path = segments.join('/');\n    return _stripIndexHtml(((path && path[0] !== '/' && '/') || '') + path);\n  }\n\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L42\n  encodeSearch(search: string | {[k: string]: unknown}): string {\n    if (typeof search === 'string') {\n      search = parseKeyValue(search);\n    }\n\n    search = toKeyValue(search);\n    return search ? '?' + search : '';\n  }\n\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L44\n  encodeHash(hash: string) {\n    hash = encodeUriSegment(hash);\n    return hash ? '#' + hash : '';\n  }\n\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L27\n  decodePath(path: string, html5Mode = true): string {\n    const segments = path.split('/');\n    let i = segments.length;\n\n    while (i--) {\n      segments[i] = decodeURIComponent(segments[i]);\n      if (html5Mode) {\n        // encode forward slashes to prevent them from being mistaken for path separators\n        segments[i] = segments[i].replace(/\\//g, '%2F');\n      }\n    }\n\n    return segments.join('/');\n  }\n\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L72\n  decodeSearch(search: string) {\n    return parseKeyValue(search);\n  }\n\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L73\n  decodeHash(hash: string) {\n    hash = decodeURIComponent(hash);\n    return hash[0] === '#' ? hash.substring(1) : hash;\n  }\n\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L149\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/location.js#L42\n  normalize(href: string): string;\n  normalize(path: string, search: {[k: string]: unknown}, hash: string, baseUrl?: string): string;\n  normalize(\n    pathOrHref: string,\n    search?: {[k: string]: unknown},\n    hash?: string,\n    baseUrl?: string,\n  ): string {\n    if (arguments.length === 1) {\n      const parsed = this.parse(pathOrHref, baseUrl);\n\n      if (typeof parsed === 'string') {\n        return parsed;\n      }\n\n      const serverUrl = `${parsed.protocol}://${parsed.hostname}${\n        parsed.port ? ':' + parsed.port : ''\n      }`;\n\n      return this.normalize(\n        this.decodePath(parsed.pathname),\n        this.decodeSearch(parsed.search),\n        this.decodeHash(parsed.hash),\n        serverUrl,\n      );\n    } else {\n      const encPath = this.encodePath(pathOrHref);\n      const encSearch = (search && this.encodeSearch(search)) || '';\n      const encHash = (hash && this.encodeHash(hash)) || '';\n\n      let joinedPath = (baseUrl || '') + encPath;\n\n      if (!joinedPath.length || joinedPath[0] !== '/') {\n        joinedPath = '/' + joinedPath;\n      }\n      return joinedPath + encSearch + encHash;\n    }\n  }\n\n  areEqual(valA: string, valB: string) {\n    return this.normalize(valA) === this.normalize(valB);\n  }\n\n  // https://github.com/angular/angular.js/blob/864c7f0/src/ng/urlUtils.js#L60\n  parse(url: string, base?: string) {\n    try {\n      // Safari 12 throws an error when the URL constructor is called with an undefined base.\n      const parsed = !base ? new URL(url) : new URL(url, base);\n      return {\n        href: parsed.href,\n        protocol: parsed.protocol ? parsed.protocol.replace(/:$/, '') : '',\n        host: parsed.host,\n        search: parsed.search ? parsed.search.replace(/^\\?/, '') : '',\n        hash: parsed.hash ? parsed.hash.replace(/^#/, '') : '',\n        hostname: parsed.hostname,\n        port: parsed.port,\n        pathname: parsed.pathname.charAt(0) === '/' ? parsed.pathname : '/' + parsed.pathname,\n      };\n    } catch (e) {\n      throw new Error(`Invalid URL (${url}) with base (${base})`);\n    }\n  }\n}\n\nfunction _stripIndexHtml(url: string): string {\n  return url.replace(/\\/index.html$/, '');\n}\n\n/**\n * Tries to decode the URI component without throwing an exception.\n *\n * @param str value potential URI component to check.\n * @returns the decoded URI if it can be decoded or else `undefined`.\n */\nfunction tryDecodeURIComponent(value: string): string | undefined {\n  try {\n    return decodeURIComponent(value);\n  } catch (e) {\n    // Ignore any invalid uri component.\n    return undefined;\n  }\n}\n\n/**\n * Parses an escaped url query string into key-value pairs. Logic taken from\n * https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1382\n */\nfunction parseKeyValue(keyValue: string): {[k: string]: unknown} {\n  const obj: {[k: string]: unknown} = {};\n  (keyValue || '').split('&').forEach((keyValue) => {\n    let splitPoint, key, val;\n    if (keyValue) {\n      key = keyValue = keyValue.replace(/\\+/g, '%20');\n      splitPoint = keyValue.indexOf('=');\n      if (splitPoint !== -1) {\n        key = keyValue.substring(0, splitPoint);\n        val = keyValue.substring(splitPoint + 1);\n      }\n      key = tryDecodeURIComponent(key);\n      if (typeof key !== 'undefined') {\n        val = typeof val !== 'undefined' ? tryDecodeURIComponent(val) : true;\n        if (!obj.hasOwnProperty(key)) {\n          obj[key] = val;\n        } else if (Array.isArray(obj[key])) {\n          (obj[key] as unknown[]).push(val);\n        } else {\n          obj[key] = [obj[key], val];\n        }\n      }\n    }\n  });\n  return obj;\n}\n\n/**\n * Serializes into key-value pairs. Logic taken from\n * https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1409\n */\nfunction toKeyValue(obj: {[k: string]: unknown}) {\n  const parts: unknown[] = [];\n  for (const key in obj) {\n    let value = obj[key];\n    if (Array.isArray(value)) {\n      value.forEach((arrayValue) => {\n        parts.push(\n          encodeUriQuery(key, true) +\n            (arrayValue === true ? '' : '=' + encodeUriQuery(arrayValue, true)),\n        );\n      });\n    } else {\n      parts.push(\n        encodeUriQuery(key, true) +\n          (value === true ? '' : '=' + encodeUriQuery(value as any, true)),\n      );\n    }\n  }\n  return parts.length ? parts.join('&') : '';\n}\n\n/**\n * We need our custom method because encodeURIComponent is too aggressive and doesn't follow\n * https://tools.ietf.org/html/rfc3986 with regards to the character set (pchar) allowed in path\n * segments:\n *    segment       = *pchar\n *    pchar         = unreserved / pct-encoded / sub-delims / \":\" / \"@\"\n *    pct-encoded   = \"%\" HEXDIG HEXDIG\n *    unreserved    = ALPHA / DIGIT / \"-\" / \".\" / \"_\" / \"~\"\n *    sub-delims    = \"!\" / \"$\" / \"&\" / \"'\" / \"(\" / \")\"\n *                     / \"*\" / \"+\" / \",\" / \";\" / \"=\"\n *\n * Logic from https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1437\n */\nfunction encodeUriSegment(val: string) {\n  return encodeUriQuery(val, true).replace(/%26/g, '&').replace(/%3D/gi, '=').replace(/%2B/gi, '+');\n}\n\n/**\n * This method is intended for encoding *key* or *value* parts of query component. We need a custom\n * method because encodeURIComponent is too aggressive and encodes stuff that doesn't have to be\n * encoded per https://tools.ietf.org/html/rfc3986:\n *    query         = *( pchar / \"/\" / \"?\" )\n *    pchar         = unreserved / pct-encoded / sub-delims / \":\" / \"@\"\n *    unreserved    = ALPHA / DIGIT / \"-\" / \".\" / \"_\" / \"~\"\n *    pct-encoded   = \"%\" HEXDIG HEXDIG\n *    sub-delims    = \"!\" / \"$\" / \"&\" / \"'\" / \"(\" / \")\"\n *                     / \"*\" / \"+\" / \",\" / \";\" / \"=\"\n *\n * Logic from https://github.com/angular/angular.js/blob/864c7f0/src/Angular.js#L1456\n */\nfunction encodeUriQuery(val: string, pctEncodeSpaces: boolean = false) {\n  return encodeURIComponent(val)\n    .replace(/%40/g, '@')\n    .replace(/%3A/gi, ':')\n    .replace(/%24/g, '$')\n    .replace(/%2C/gi, ',')\n    .replace(/%3B/gi, ';')\n    .replace(/%20/g, pctEncodeSpaces ? '%20' : '+');\n}\n"]}