mirror of
https://github.com/zhigang1992/react-native.git
synced 2026-02-09 22:50:21 +08:00
936e1d4a11
Summary:
We don't currently support platform extensions in asset modules.
This adds supports for it:
```
require('./a.png');
```
Will require 'a.ios.png' if it exists and 'a.png' if it doesn't.
56 lines
1.4 KiB
JavaScript
56 lines
1.4 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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'use strict';
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const path = require('path');
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const getPlatformExtension = require('./getPlatformExtension');
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function getAssetDataFromName(filename) {
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const ext = path.extname(filename);
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const platformExt = getPlatformExtension(filename);
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let pattern = '@([\\d\\.]+)x';
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if (platformExt != null) {
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pattern += '(\\.' + platformExt + ')?';
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}
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pattern += '\\' + ext + '$';
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const re = new RegExp(pattern);
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const match = filename.match(re);
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let resolution;
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if (!(match && match[1])) {
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resolution = 1;
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} else {
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resolution = parseFloat(match[1], 10);
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if (isNaN(resolution)) {
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resolution = 1;
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}
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}
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let assetName;
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if (match) {
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assetName = filename.replace(re, ext);
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} else if (platformExt != null) {
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assetName = filename.replace(new RegExp(`\\.${platformExt}\\${ext}`), ext);
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} else {
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assetName = filename;
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}
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return {
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resolution: resolution,
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assetName: assetName,
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type: ext.slice(1),
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name: path.basename(assetName, ext),
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platform: platformExt,
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};
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}
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module.exports = getAssetDataFromName;
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