Comments (2)
So this actually happens on archive creation, not on listing. Here's why:
OS X has a bunch of special file attributes like resource forks and Finder Info, that aren't easily tar-able. So bsdtar (the default on OS X) uses the copyfile() API to grab that extra data in AppleDouble format, and stores it as a ._ file. Eg, if you have a file called "foo" with a resource fork, bsdtar will store a "._foo" member and then "foo".
This is pretty annoying for pixz! Listing the tarball would include all sorts of extra ._ files, and extracting a single file would strip it of its special attributes. So I chose the solution of treating a ._ file as part of the following file, which works in almost all cases. Obviously it's not perfect though, such as if you really have files starting with ._ .
Here are some potential solutions:
- Have a flag to enable/disable the special ._ handling
- Automatically disable ._ handling on non-Mac platforms
- Always store ._ files, but then use special code for listing/extraction to ignore it.
Do you have a preference among them? Why do you have ._ files lying around, anyhow?
from pixz.
Thanks for the info. I didn't know OS X did that. That makes sense. I share files with people who use Windows, OS X and Linux. It looks like all the files not being listed are from folders that have been extracted and re-archived through an Apple PC at some point. Also, I haven't intentionally named anything that starts with ._.
I guess these files are useless on PCs not running OS X. As for a preference then I'd like a flag. You can leave the the current behavior as the default.
from pixz.
Related Issues (20)
- configure: error: AsciiDoc not found, not able to generate the man page. HOT 3
- Error decoding stream footer when trying to decompress a 3.1 TiB .tpxz file HOT 8
- cppcheck 2.8 warnings about uninitialized variables
- Crash when using -x option
- What is the default level of compression? HOT 2
- Can't compile on Fedora 38 HOT 2
- msys2 build failure HOT 18
- Indexes HOT 2
- Clarify README section on differences with xz HOT 5
- any plans for another release soon? HOT 1
- option -V doesn't work HOT 2
- Extracting multiple files at once HOT 2
- the oldest indexing compressor ? HOT 2
- Building On Windows HOT 2
- manpage not installed if building from release tarball HOT 2
- build env question not package liblzma HOT 1
- Questions about tpxz / file index format HOT 6
- Error creating block encoder HOT 3
- Syntax for converting existing tar.xz archive to indexed pixz file? HOT 1
- Random failures when compressing large directories HOT 1
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from pixz.