/*! @license
* Shaka Player
* Copyright 2016 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
goog.provide('shaka.offline.OfflineUri');
/**
* The OfflineUri class contains all the components that make up the offline
* uri. The components are:
* TYPE: Used to know what type of data the uri points to. It can either
* be "manifest" or "segment".
* MECHANISM: The name of the mechanism that manages the storage cell that
* holds the data.
* CELL: The name of the cell that holds the data.
* KEY: The key that the data is stored under in the cell.
*/
shaka.offline.OfflineUri = class {
/**
* @param {string} type
* @param {string} mechanism
* @param {string} cell
* @param {number} key
*/
constructor(type, mechanism, cell, key) {
/**
* @private {string}
* @const
*/
this.type_ = type;
/**
* @private {string}
* @const
*/
this.mechanism_ = mechanism;
/**
* @private {string}
* @const
*/
this.cell_ = cell;
/**
* @private {number}
* @const
*/
this.key_ = key;
/**
* @private {string}
* @const
*/
this.asString_ = [
'offline:', type, '/', mechanism, '/', cell, '/', key,
].join('');
}
/** @return {boolean} */
isManifest() { return this.type_ == 'manifest'; }
/** @return {boolean} */
isSegment() { return this.type_ == 'segment'; }
/** @return {string} */
mechanism() { return this.mechanism_; }
/** @return {string} */
cell() { return this.cell_; }
/** @return {number} */
key() { return this.key_; }
/** @override */
toString() { return this.asString_; }
/**
* @param {string} uri
* @return {?shaka.offline.OfflineUri}
*/
static parse(uri) {
const parts = /^offline:([a-z]+)\/([^/]+)\/([^/]+)\/([0-9]+)$/.exec(uri);
if (parts == null) {
return null;
}
const type = parts[1];
if (type != 'manifest' && type != 'segment') {
return null;
}
const mechanism = parts[2];
if (!mechanism) {
return null;
}
const cell = parts[3];
if (!cell) {
return null;
}
const key = Number(parts[4]);
if (type == null) {
return null;
}
return new shaka.offline.OfflineUri(type, mechanism, cell, key);
}
/**
* @param {string} mechanism
* @param {string} cell
* @param {number} key
* @return {!shaka.offline.OfflineUri}
*/
static manifest(mechanism, cell, key) {
return new shaka.offline.OfflineUri('manifest', mechanism, cell, key);
}
/**
* @param {string} mechanism
* @param {string} cell
* @param {number} key
* @return {!shaka.offline.OfflineUri}
*/
static segment(mechanism, cell, key) {
return new shaka.offline.OfflineUri('segment', mechanism, cell, key);
}
};