desktop-packages team mailing list archive

[h1bymask <177929@xxxxxxxxxxxxxxxxxx>]

OK, some investigation and code work helped reveal the fix.
You need to do the following operations:
1. download the p7zip source package.
2. unpack the package and cd to its parent directory.
3. download the patch (see attachment).
4. patch -p0 <p7zip-9.20.1-manual-iconv-lc_dos.patch
5. "make 7z" inside the p7zip src package and copy ./bin/7z and ./bin/7z.so to /usr/lib/p7zip/ to fix the File Roller.
You need to "make 7z 7za sfx" and copy ./bin/* to /usr/lib/p7zip to replace p7zip binaries completely.
---
How to use the patched p7zip:
Just call p7zip / any program using it (e.g. file-roller) with LC_DOS environment variable set to the respective desired DOS charset. The correspondence between your Ubuntu language and DOS charset can be detected in 2 ways:
1. libnatspec library: sources at http://sisyphus.ru/ru/srpm/libnatspec ; binaries at https://launchpad.net/~r0lf/+archive/ppa/+build/1911465 . Just use the construction like LC_DOS=cp`natspec -c`
2. gettext itself provides the language-charset table because of DJGPP support. Use the following construction:
echo `/usr/share/gettext/intl/config.charset msdosdjgpp | grep \`echo $LANG | cut -f1 -d.\` | cut -f2 -d' '`
Of course, the 2nd solution won't work perfectly inside a .desktop file.
Example:
LC_DOS=cp866 file-roller
You also can download the attachment in the post below. It contains .desktop file and compiled 7z binaries for amd64. Then:
1. Drag and drop that .desktop file into the Main Menu application (alacarte). After that you can create DOS/Win32-compliant ZIP archive by starting the "Archive Manager - natspec DOS charset" from main menu.
2. Right click on any ZIP archive and select Properties->Open with->Show other ...->Archive Manager - natspec DOS charset. After that you can open DOS/Win32 archives by right-clicking on the file and selecting "Open withArchive Manager - natspec ....".

** Patch added: "p7zip-9.20.1-manual-iconv-lc_dos.patch"
   https://bugs.launchpad.net/ubuntu/+source/file-roller/+bug/177929/+attachment/2598480/+files/p7zip-9.20.1-manual-iconv-lc_dos.patch

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https://bugs.launchpad.net/bugs/177929

Title:
  Should autodetect filename character encoding in zip files

Status in File Roller:
  Confirmed
Status in “file-roller” package in Ubuntu:
  Triaged
Status in “xarchiver” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: file-roller

  Many compressed file such as zip don't specify filename encoding. But
  file-roller read every file as UTF-8, so it sometimes makes encoding
  problem.

  I think may be, you could think that it's not a big problem or it's
  not a bug or we don't need those feature. If you deal with only
  English it's not a problem at all. But it's a big problem for East
  Asian people such as Chinese, Japanese and Korean. Because zip file is
  still popular. And many people compress zip file in Windows, and share
  the zip files. Windows don't use UTF-8.

  Many CJK people want to uncompress these zip files. There are some way
  to solve this problem (by another software). But all are too complex
  to Ubuntu newbies. I wish file-roller support encoding select
  function.

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