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Stschr/lang matcher dash parser #4036
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dsilhavy
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Dash-Industry-Forum:development
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DolbyLaboratories:stschr/langMatcher_dash_parser
Sep 20, 2022
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Original file line number | Diff line number | Diff line change |
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/** | ||
* The copyright in this software is being made available under the BSD License, | ||
* included below. This software may be subject to other third party and contributor | ||
* rights, including patent rights, and no such rights are granted under this license. | ||
* | ||
* Copyright (c) 2013, Dash Industry Forum. | ||
* All rights reserved. | ||
* | ||
* Redistribution and use in source and binary forms, with or without modification, | ||
* are permitted provided that the following conditions are met: | ||
* * Redistributions of source code must retain the above copyright notice, this | ||
* list of conditions and the following disclaimer. | ||
* * Redistributions in binary form must reproduce the above copyright notice, | ||
* this list of conditions and the following disclaimer in the documentation and/or | ||
* other materials provided with the distribution. | ||
* * Neither the name of Dash Industry Forum nor the names of its | ||
* contributors may be used to endorse or promote products derived from this software | ||
* without specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY | ||
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | ||
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | ||
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | ||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
* POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
/** | ||
* @classdesc Matches and converts any ISO 639 language tag to BCP-47 language tags | ||
*/ | ||
import BaseMatcher from './BaseMatcher'; | ||
import DashConstants from '../../constants/DashConstants'; | ||
var bcp47Normalize = require('bcp-47-normalize') | ||
|
||
class LangMatcher extends BaseMatcher { | ||
constructor() { | ||
super( | ||
(attr, nodeName) => { | ||
const stringAttrsInElements = { | ||
[DashConstants.ADAPTATION_SET]: [ DashConstants.LANG ], | ||
[DashConstants.REPRESENTATION]: [ DashConstants.LANG ], | ||
[DashConstants.CONTENT_COMPONENT]: [ DashConstants.LANG ], | ||
[DashConstants.LABEL]: [ DashConstants.LANG ], | ||
[DashConstants.GROUP_LABEL]: [ DashConstants.LANG ] | ||
// still missing from 23009-1: Preselection@lang, ProgramInformation@lang | ||
}; | ||
if (stringAttrsInElements.hasOwnProperty(nodeName)) { | ||
let attrNames = stringAttrsInElements[nodeName]; | ||
if (attrNames !== undefined) { | ||
return attrNames.indexOf(attr.name) >= 0; | ||
} else { | ||
return false; | ||
} | ||
} | ||
return false; | ||
}, | ||
str => { | ||
let lang = bcp47Normalize(str); | ||
if (lang !== undefined) { | ||
return lang; | ||
} | ||
return String(str); | ||
} | ||
); | ||
} | ||
} | ||
|
||
export default LangMatcher; |
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Use
let
orconst