getnamo/7zip-cpp

Fork of SevenZip++ for modern builds.

7zip-cpp's Issues

Non zip compression format detection doesn't seem to work (with fix)

Hi,

I had a 7z file to extract but SevenZipExtractor::DetectCompressionFormat would think that the format was CompressionFormat::Lzma86 instead of CompressionFormat::SevenZip.

The format is detected is by trying to open the archive with each type consecutively until the archive opens correctly (link to source) but the file is not seeked to the beginning after each iteration, seemingly leading to no/incorrect detection for all but zip formats.

Seeking the file to the beginning before each iteration with fileStream->Seek({}, STREAM_SEEK_SET, nullptr); seems to fix the issue.

TestApp Build failing on Line 421

https://github.com/getnamo/7zip-cpp/blob/master/7zpp-TestApp/7zpp-TestApp.cpp#L421

see https://ci.appveyor.com/project/kenkit/7zip-cpp

Append files to an existing archive and renaming files in the archive

Do you support the following issues in your library?

• Can you add files to an existing archive while files already archived before remain?
• Can you rename files in the archive?

Code snippet are welcome. Thanks in advance!

About getcompressionformat

Isn't getcompressionformat used to get the compressed package format?
Why does the 7z package use getcompressionformat and the result is 2, which is zip

udf format support

I'm trying to extract a windows image and then compress it again to iso file

the problem is that the the extractor detects that the compression format is cab and extracts some garbage after consuming too much of the disk io speed

so I change the format to Iso but now it extracts a one file named README.txt which contains :
""This disc contains a "UDF" file system and requires an operating system
that supports the ISO-13346 "UDF" file system specification.""

I opened the iso file with 7-zip and found that the format is udf and it is able to extract it , thus I assumed that this library lacks support for udf files

To use it in VS2019

hello, how can I use functions of 7zip in VS2019(Windows) ?

How to extract password protected archive?

Does this library support password protected archive extraction? I didn't find related API.

Might be great to support remote|network extract/list

This feature would make the library invincible. I will research on how to do this when I have time.
But I think it is possible if we create a file stream that has member functions such as read() which can in turn read from network streams i.e http, ftp since http supports range requests.

Cannot compile 7zpp.VS2017.sln - missing include files

1> UsefulFunctions.cpp
1> c:\7zip-cpp-master\7zpp\UsefulFunctions.h(5): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> SevenZipLister.cpp
1> c:\7zip-cpp-master\7zpp\ArchiveOpenCallback.h(6): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> SevenZipExtractor.cpp
1> c:\7zip-cpp-master\7zpp\ArchiveOpenCallback.h(6): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> SevenZipCompressor.cpp
1> c:\7zip-cpp-master\7zpp\ArchiveUpdateCallback.h(6): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> SevenZipArchive.cpp
1> c:\7zip-cpp-master\7zpp\UsefulFunctions.h(5): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> PropVariant.cpp
1> c:\7zip-cpp-master\7zpp\PropVariant.h(7): fatal error C1083: Cannot open include file: 'Common/MyTypes.h': No such file or directory
1> OutStreamWrapper.cpp
1> c:\7zip-cpp-master\7zpp\OutStreamWrapper.h(4): fatal error C1083: Cannot open include file: '7zip/IStream.h': No such file or directory
1> OutMemStream.cpp
1> c:\7zip-cpp-master\7zpp\OutMemStream.h(5): fatal error C1083: Cannot open include file: '7zip/IStream.h': No such file or directory
1> MemExtractCallback.cpp
1> c:\7zip-cpp-master\7zpp\MemExtractCallback.h(6): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> InStreamWrapper.cpp
1> c:\7zip-cpp-master\7zpp\InStreamWrapper.h(4): fatal error C1083: Cannot open include file: '7zip/IStream.h': No such file or directory
1> ArchiveUpdateCallback.cpp
1> c:\7zip-cpp-master\7zpp\ArchiveUpdateCallback.h(6): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> ArchiveOpenCallback.cpp
1> c:\7zip-cpp-master\7zpp\ArchiveOpenCallback.h(6): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> ArchiveExtractCallback.cpp
1> c:\7zip-cpp-master\7zpp\ArchiveExtractCallback.h(6): fatal error C1083: Cannot open include file: '7zip/Archive/IArchive.h': No such file or directory
1> Generating Code...
1>Done building target "ClCompile" in project "7zpp.VS2017.vcxproj" -- FAILED.

list or extract for recursive achive like tar.gz

tar.gz is recursive archive
tar > gz

present tar is extracted by name [Content] file
it wasn expected result for everyone

how i solved?

Verify latest merge and apply changes to ue4 branch

dll

Is there a way to load the dll into memory without actually needing to ship it with the binary?

How to use it in iOS

Link with appveyor or equivalent cltests

I think it is now possible to add appveyor as a testing framework.

Rar format compression and decompression cannot be used

Rar format compression and decompression cannot be used .

Encrypt filenames

Hi,
I was able to set a password using the compressor. but it seems it does not encrypt the file names. is this possible?

Thanks!

Auto detect not working for .7z files and other types

I'm using this library in my project as a plugin, so far everything is working fine except auto-detection for specific filetypes like 7z.

GetOrigSizes would return incorrect size when archive contains large file

Hi, I am using your project to extract my archive. But I found that GetOrigSizes would return incorrect size when package contains large file like 10GB. This can be fixed in UsefulFunctions.cpp line 173, change intVal to uhVal. Then it will work for large archive contains large file. 😄

Lister is broken

The lister class is currently broken. I'm trying to figure out what needs to be fixed to make it work.

Linux Support

I have the need to get some UE4 zip library stuff on android and started looking into compiling 7zip-cpp for linux. There was an immediate roadblock with the COM stuff. I've hacked around for several hours, trying a few COM wrappers. It's starting to feel like a fool's errand.

I wanted to see if you ever had a super high-level plan of how to support other platforms or maybe this was meant to only ever be a windows lib? I'm guessing most likely using raw LZMA sdk and trying to reach parity with existing interface and callbacks is the long road.