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Posted to issues@commons.apache.org by "Frotty (Jira)" <ji...@apache.org> on 2020/06/07 10:25:00 UTC
[jira] [Created] (COMPRESS-537) SevenZipOutputFile with DEFLATE
compression is incorrectly decompressed
Frotty created COMPRESS-537:
-------------------------------
Summary: SevenZipOutputFile with DEFLATE compression is incorrectly decompressed
Key: COMPRESS-537
URL: https://issues.apache.org/jira/browse/COMPRESS-537
Project: Commons Compress
Issue Type: Bug
Affects Versions: 1.20
Reporter: Frotty
Attachments: roxpack.atlas
I create a 7zip archive and then load files from it. Using LZMA or BZIP2 works, but when I change it to DEFLATE the files aren't loaded correctly, parts of them are missing.
Example kotlin code:
{code:java}
public fun test() {
// SAVE
val target = File("target.7z")
val sevenZOutput = SevenZOutputFile(target)
sevenZOutput.setContentCompression(SevenZMethod.DEFLATE)
val file = File("roxpack.atlas")
val entry = sevenZOutput.createArchiveEntry(file, "roxpack.atlas")
sevenZOutput.putArchiveEntry(entry)
sevenZOutput.write(Files.readAllBytes(file.toPath()))
sevenZOutput.closeArchiveEntry()
sevenZOutput.close()
// LOAD
val s7f = SevenZFile(target)
s7f.use {
var nextEntry = it.nextEntry
do {
if (nextEntry.name == entry.name) {
val content = ByteArray(nextEntry.size.toInt())
s7f.read(content)
// with DEFLATE content array contains only 0's at the end, content string is cut off
println(String(content))
return
}
nextEntry = it.nextEntry
} while (nextEntry != null)
}
}
{code}
When I extract the file using 7zip GUI tool, the file is intact, so the problem lies within the decompression.
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