jiuyiUniapp/service/node_modules/@react-native/assets-registry/path-support.js

96 lines
2.5 KiB
JavaScript

/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict
* @format
*/
'use strict';
/*:: import type {PackagerAsset} from './registry.js'; */
const androidScaleSuffix = {
'0.75': 'ldpi',
'1': 'mdpi',
'1.5': 'hdpi',
'2': 'xhdpi',
'3': 'xxhdpi',
'4': 'xxxhdpi',
};
const ANDROID_BASE_DENSITY = 160;
/**
* 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) {
// $FlowFixMe[invalid-computed-prop]
return androidScaleSuffix[scale.toString()];
}
// NOTE: Android Gradle Plugin does not fully support the nnndpi format.
// See https://issuetracker.google.com/issues/72884435
if (Number.isFinite(scale) && scale > 0) {
return Math.round(scale * ANDROID_BASE_DENSITY) + 'dpi';
}
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',
'ktx',
'png',
'svg',
'webp',
'xml',
]);
function getAndroidResourceFolderName(
asset /*: PackagerAsset */,
scale /*: number */,
) /*: string */ {
if (!drawableFileTypes.has(asset.type)) {
return 'raw';
}
const 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'),
);
}
return 'drawable-' + suffix;
}
function getAndroidResourceIdentifier(
asset /*: PackagerAsset */,
) /*: string */ {
return (getBasePath(asset) + '/' + asset.name)
.toLowerCase()
.replace(/\//g, '_') // Encode folder structure in file name
.replace(/([^a-z0-9_])/g, '') // Remove illegal chars
.replace(/^(?:assets|assetsunstable_path)_/, ''); // Remove "assets_" or "assetsunstable_path_" prefix
}
function getBasePath(asset /*: PackagerAsset */) /*: string */ {
const basePath = asset.httpServerLocation;
return basePath.startsWith('/') ? basePath.slice(1) : basePath;
}
module.exports = {
getAndroidResourceFolderName,
getAndroidResourceIdentifier,
getBasePath,
};