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https://issues.apache.org/jira/browse/COMPRESS-508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17074466#comment-17074466
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AD_LB commented on COMPRESS-508:
--------------------------------
Peter Lee
1. I tested this now. Other than (again) not being able to use
"ZipEncodingHelper.UTF8" (because it's not public, no idea how you reach it),
it seems to work well:
{code:kt}
ZipArchiveInputStream(FileInputStream(file), "UTF8", true,
true).use { inputStream ->
var entry: ArchiveEntry? = null
var nextEntry: ArchiveEntry? = null
while (true) {
entry = nextEntry ?: inputStream.nextEntry ?: break
nextEntry = null
if (entry.size < 0)
nextEntry = inputStream.nextEntry
Log.d("AppLog", "entry:${entry.name} ${entry.size} ")
}
}
{code}
You say it's a good workaround to get the information of the entries?
After that, I would have to create a new ZipArchiveInputStream, right?
2. I see. Can you please show how to use the whole-file-in-mem technique? Only
the first few lines, of course. No need for the entries if that's obvious
anyway :)
Maybe I will use the memory solution if possible, and the 2
ZipArchiveInputStream method when not possible.
[~bodewig]
Is it a lot of code? What should I worry about?
Is it possible to know how much memory it will need? It's about the same as the
size of the file, right? But it's a bit problematic to know the size of an
InputStream sometimes.
Is it possible to tell it "take up to this much RAM, but if you can't, tell me
about it" ?
> Bug: cannot get file size of ArchiveEntry using ZipArchiveInputStream
> ---------------------------------------------------------------------
>
> Key: COMPRESS-508
> URL: https://issues.apache.org/jira/browse/COMPRESS-508
> Project: Commons Compress
> Issue Type: Bug
> Components: Build
> Affects Versions: 1.20
> Environment: Android 9 and Android 10, on both emulator and real
> device .
> Reporter: AD_LB
> Priority: Major
> Attachments: 2020-03-31_20-53-36.png, 2020-04-01_18-28-19.mp4,
> ZipTest.zip, ZipTest2.zip, test.zip
>
>
> I'm trying to use ZipArchiveInputStream to iterate over the items of a zip
> file (which may or may not be a real file on the file-system, which is why I
> use a stream), optionally creating a stream from specific entries.
> One of the operations I need is to get the size of the files within.
> For some reason, it fails to do so. Not only that, but it throws an exception
> when I'm done with it:
> {code:java}
> Error:org.apache.commons.compress.archivers.zip.UnsupportedZipFeatureException:
> Unsupported feature data descriptor used in entry ...
> {code}
> I've attached here 3 files:sample project, the problematic zip file (remember
> that you need to put it in the correct path and grant storage permission),
> and a screenshot of the issue.
> Note that if I open the file using a third party PC app (such as
> [7-zip|https://www.7-zip.org/] ), it works fine, including showing the file
> size inside.
> Files:
> !2020-03-31_20-53-36.png![^test.zip]
> [^ZipTest.zip]
> Here's the relevant code (kotlin) :
>
> {code:java}
> thread {
> try {
> val file = File("/storage/emulated/0/test.zip")
> ZipArchiveInputStream(FileInputStream(file)).use {
> while (true) {
> val entry = it.nextEntry ?: break
> Log.d("AppLog", "entry:${entry.name} ${entry.size} ")
> }
> }
> Log.d("AppLog", "got archive ")
> } catch (e: Exception) {
> Log.d("AppLog", "Error:$e")
> e.printStackTrace()
> }
> }
> {code}
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