Files
shaka-player/lib/util/manifest_parser_utils.js
T
Sandra Lokshina 87073c9afa Create ManifestParserUtil common to dash and hls parsers.
Both DASH and HLS parsers will be using resolveUris() and possibly
other methods in the future.
Create a ManifestParserUtil for the shared methods.

Issue #279.

Change-Id: Iaa5e32ec543a390341a54752563a9f27251f0832
2017-01-19 23:34:25 +00:00

53 lines
1.7 KiB
JavaScript

/**
* @license
* Copyright 2017 Google Inc.
*
* 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.
*/
goog.provide('shaka.util.ManifestParserUtils');
goog.require('goog.Uri');
goog.require('shaka.util.Functional');
/**
* @namespace shaka.util.ManifestParserUtils
* @summary Utility functions for manifest parsing.
*/
/**
* Resolves an array of relative URIs to the given base URIs. This will result
* in M*N number of URIs.
*
* @param {!Array.<string>} baseUris
* @param {!Array.<string>} relativeUris
* @return {!Array.<string>}
*/
shaka.util.ManifestParserUtils.resolveUris = function(baseUris, relativeUris) {
var Functional = shaka.util.Functional;
if (relativeUris.length == 0)
return baseUris;
var relativeAsGoog =
relativeUris.map(function(uri) { return new goog.Uri(uri); });
// Resolve each URI relative to each base URI, creating an Array of Arrays.
// Then flatten the Arrays into a single Array.
return baseUris.map(function(uri) { return new goog.Uri(uri); })
.map(function(base) { return relativeAsGoog.map(base.resolve.bind(base)); })
.reduce(Functional.collapseArrays, [])
.map(function(uri) { return uri.toString(); });
};