81 lines
2.1 KiB
JavaScript
81 lines
2.1 KiB
JavaScript
|
/**
|
||
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This source code is licensed under the BSD-style license found in the
|
||
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
||
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
||
|
|
*
|
||
|
|
* @flow
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
import type {PackagerAsset} from '../../Libraries/Image/AssetRegistry';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* FIXME: using number to represent discrete scale numbers is fragile in essence because of
|
||
|
|
* floating point numbers imprecision.
|
||
|
|
*/
|
||
|
|
function getAndroidAssetSuffix(scale: number): string {
|
||
|
|
switch (scale) {
|
||
|
|
case 0.75: return 'ldpi';
|
||
|
|
case 1: return 'mdpi';
|
||
|
|
case 1.5: return 'hdpi';
|
||
|
|
case 2: return 'xhdpi';
|
||
|
|
case 3: return 'xxhdpi';
|
||
|
|
case 4: return 'xxxhdpi';
|
||
|
|
}
|
||
|
|
throw new Error('no such scale');
|
||
|
|
}
|
||
|
|
|
||
|
|
// See https://developer.android.com/guide/topics/resources/drawable-resource.html
|
||
|
|
const drawableFileTypes = new Set([
|
||
|
|
'gif',
|
||
|
|
'jpeg',
|
||
|
|
'jpg',
|
||
|
|
'png',
|
||
|
|
'svg',
|
||
|
|
'webp',
|
||
|
|
'xml',
|
||
|
|
]);
|
||
|
|
|
||
|
|
function getAndroidResourceFolderName(asset: PackagerAsset, scale: number) {
|
||
|
|
if (!drawableFileTypes.has(asset.type)) {
|
||
|
|
return 'raw';
|
||
|
|
}
|
||
|
|
var suffix = getAndroidAssetSuffix(scale);
|
||
|
|
if (!suffix) {
|
||
|
|
throw new Error(
|
||
|
|
'Don\'t know which android drawable suffix to use for asset: ' +
|
||
|
|
JSON.stringify(asset)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
const androidFolder = 'drawable-' + suffix;
|
||
|
|
return androidFolder;
|
||
|
|
}
|
||
|
|
|
||
|
|
function getAndroidResourceIdentifier(asset: PackagerAsset) {
|
||
|
|
var folderPath = getBasePath(asset);
|
||
|
|
return (folderPath + '/' + asset.name)
|
||
|
|
.toLowerCase()
|
||
|
|
.replace(/\//g, '_') // Encode folder structure in file name
|
||
|
|
.replace(/([^a-z0-9_])/g, '') // Remove illegal chars
|
||
|
|
.replace(/^assets_/, ''); // Remove "assets_" prefix
|
||
|
|
}
|
||
|
|
|
||
|
|
function getBasePath(asset: PackagerAsset) {
|
||
|
|
var basePath = asset.httpServerLocation;
|
||
|
|
if (basePath[0] === '/') {
|
||
|
|
basePath = basePath.substr(1);
|
||
|
|
}
|
||
|
|
return basePath;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
getAndroidAssetSuffix: getAndroidAssetSuffix,
|
||
|
|
getAndroidResourceFolderName: getAndroidResourceFolderName,
|
||
|
|
getAndroidResourceIdentifier: getAndroidResourceIdentifier,
|
||
|
|
getBasePath: getBasePath
|
||
|
|
};
|