React-Native:如何打开本地捆绑的二进制文件 [英] React-Native: How to open locally bundled binary file
问题描述
我正在编写一个 react-native 应用，我希望它使用包含设备固件更新的 zip 文件进行部署.
I'm writing a react-native app, and I want it to deploy with a zip file that contains a device firmware update.
在让用户发送更新之前，我需要我的代码来打开 zip 并对其内容进行一些验证.
Before letting the user send the update, I need my code to open the zip and do some validation of its contents.
我发现了很多处理 zip 的 NPM 包，所以我需要做的就是加载文件内容，这样我就可以将其提供给其中之一.
I've found lots of zip-handling NPM packages, so all I need to do is load the file contents so I can feed it to one of these.
- require('./firmware/fw.zip');<-- 打包器默认不包含 .zip
- require('./firmware/fw.pdf');<-- [gross hack] 打包程序包括 pdf，但 require() 调用的实际结果是一个数字:
5.我不知道我可以用这个数字做什么来获取文件内容，但我很确定这个 require() 系统是为加载图像而不是二进制数据而设计的. - ReactNativeFs.openFile('./firmware/fw.zip');<-- 因 ENOENT 失败
- ReactNativeFs.openFile(
${ReactNativeFs.MainBundlePath}/firmware/fw.zip);<-- MainBundlePath 在 android 上是undefined.
- require('./firmware/fw.zip'); <-- packager doesn't include .zip by default
- require('./firmware/fw.pdf'); <-- [gross hack] packager includes pdfs, but the actual result of the require() call is a number:
5. I don't know what I can do with this number to get file contents, but I'm pretty sure this require() system is designed for loading images, not binary data. - ReactNativeFs.openFile('./firmware/fw.zip'); <-- fails with ENOENT
- ReactNativeFs.openFile(
${ReactNativeFs.MainBundlePath}/firmware/fw.zip); <-- MainBundlePath isundefinedon android.
这似乎是一个非常基本的问题，所以我确定我在某处遗漏了一段文档，但我正在进入我的第三个小时尝试加载此文件的内容，但没有运气.
This seems like a really basic question, so I'm sure I've missed a piece of documentation somewhere, but I'm heading into my third hour trying to load the contents of this file with no luck.
我很确定我可以手动将 zip 文件放入适当的 android 和 ios 资源目录中，但这似乎是一个难以-维护道路.
I'm pretty sure I could manually put the zip file into the appropriate android and ios resource directories, but that seems like a step down a hard-to-maintain road.
推荐答案
几个月后我再次遇到这个问题(我显然是唯一需要在 react-native 中打包 .zips 的人)，上面的答案不适用于 iOS.所以我将 .zip 编码为 base64，将它们放入 .js 文件中，然后使用 import 从这些 .js 文件中获取数据.这实际上似乎是一个有点老套但又灵活的长期解决方案，而无需处理依赖于平台的文件位置.
I encountered this problem again a couple months later (I'm apparently the only guy that needs to package .zips in react-native), and the above answer didn't work out for iOS. So I encoded the .zips as base64, put them in .js files, then used import to get the data from those .js files. This actually seems like a somewhat hacky but also flexible long-term solution, without having to mess around with platform-dependent file locations.
在我的新问题中查看完整答案:React-native 打包器配置 - 如何在包中包含 .zip 文件?
See whole answer at my new question: React-native packager configuration - How to include .zip file in bundle?
这篇关于React-Native:如何打开本地捆绑的二进制文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
