They go into a "sandbox" which isn't easy to inspect. You might want to instead use the new chrome.fileSystem chooseEntry function (http://developer.chrome.com/apps/fileSystem.html) with the "directory" option and also "retainEntry" to get access to write to a normal directory on your computer, so that you can see the files and have them not be cleared out when you clear your browser cache, etc.
Where is the file sandbox for a Chrome app?
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29-09-2022 - |
質問
I'm developing a chrome app with the capability to handle files. I need to copy these files to the app, which I believe stores it in the app's sandbox.
But where are these files, like on my disk?
Here's where I get access to the filesystem:
fs = null
oneGig = Math.pow 2, 30 # 1GB
window.webkitRequestFileSystem window.PERSISTENT, oneGig,
(_fs) -> # on fs init
fs = _fs
console.log fs.root.fullPath #=> "/" obviously not right
(e) -> # on fs error
console.log e
Followed by this code to actually write the files.
fs.root.getFile songObj.md5, create: true, (fileEntry) ->
fileEntry.createWriter (fileWriter) ->
fileWriter.onwriteend = (e) ->
console.log 'Song file saved!', fileEntry, e
# Where the hell on disk is my file now?
fileWriter.onerror = (e) ->
console.log 'fileWriter.onerror', e
fileWriter.write songObj.blob
, (e) -> console.log 'fileEntry.createWriter error', e
, (e) -> console.log 'fs.root.getFile error', e
I've had some bugs in my file handling and want to be able to easily inspect what is going on, as well as clean things up if necessary. And I can't seem find anywhere in the docs that it says files go. And this especially frustrating since I'm have files just vanish after coming back to the app a few days later.
解決
他のヒント
So I'm not entirely sure at the lower level how Chrome Apps differ from a normal web-page, in the contect of the HTML5 Filesystem API.
But I can say that persistent storage On Windows 7, with Chrome is here:
C:\Users\{user}\AppData\Local\Google\Chrome\User Data\Default\File System\
If you want to find out where it is stored via Chrome on other OS please see this_post
Note, the directory names are weird, that said though the underlying file contents and sizes are exactly the same, so if you poke around the files and open in a text editor you'll be able to see the original contents of your files before you copied them into the persistent web-app space.