92 lines
2.3 KiB
JavaScript
92 lines
2.3 KiB
JavaScript
/**
|
|
* Copyright (c) Facebook, Inc. and its affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*
|
|
* @format
|
|
* @flow strict
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
import type {PackagerAsset} from './AssetRegistry';
|
|
|
|
const androidScaleSuffix = {
|
|
'0.75': 'ldpi',
|
|
'1': 'mdpi',
|
|
'1.5': 'hdpi',
|
|
'2': 'xhdpi',
|
|
'3': 'xxhdpi',
|
|
'4': 'xxxhdpi',
|
|
};
|
|
|
|
/**
|
|
* FIXME: using number to represent discrete scale numbers is fragile in essence because of
|
|
* floating point numbers imprecision.
|
|
*/
|
|
function getAndroidAssetSuffix(scale: number): string {
|
|
if (scale.toString() in androidScaleSuffix) {
|
|
return androidScaleSuffix[scale.toString()];
|
|
}
|
|
|
|
throw new Error('no such scale ' + scale.toString());
|
|
}
|
|
|
|
// 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,
|
|
): string | $TEMPORARY$string<'raw'> {
|
|
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 scale: " +
|
|
scale +
|
|
'\nAsset: ' +
|
|
JSON.stringify(asset, null, '\t') +
|
|
'\nPossible scales are:' +
|
|
JSON.stringify(androidScaleSuffix, null, '\t'),
|
|
);
|
|
}
|
|
const androidFolder = 'drawable-' + suffix;
|
|
return androidFolder;
|
|
}
|
|
|
|
function getAndroidResourceIdentifier(asset: PackagerAsset): string {
|
|
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): string {
|
|
var basePath = asset.httpServerLocation;
|
|
if (basePath[0] === '/') {
|
|
basePath = basePath.substr(1);
|
|
}
|
|
return basePath;
|
|
}
|
|
|
|
module.exports = {
|
|
getAndroidAssetSuffix: getAndroidAssetSuffix,
|
|
getAndroidResourceFolderName: getAndroidResourceFolderName,
|
|
getAndroidResourceIdentifier: getAndroidResourceIdentifier,
|
|
getBasePath: getBasePath,
|
|
};
|