Re: [gentoo-dev] [fyi] lddtree magic

[Samuli Suominen <ssuominen@gentoo.org>]

On 09/04/13 22:31, Mike Frysinger wrote:
> i doubt few people have noticed, but i've rewritten lddtree recently in
> python.  i did for speed, for fun, and to add a lot more functionality that
> would have driven the bash code base to new perverse levels.
>
> i've randomly stumbled across places in our code base (beyond ebuilds) where
> the new python version would be useful.  rather than try and ferret out those
> myself, i'll just announce here and people can sort it out.
>
> if you guys think this can satisfy most of your needs but there's like a small
> edge case that isn't quite handled, let me know.  i can always add another
> option :).
>
> specifically, lddtree (both the shell & python variants) support a --list:
> $ lddtree -l /bin/bash

$ qfile -v /usr/bin/lddtree
app-misc/pax-utils-0.6 (/usr/bin/lddtree)

$ python --version
Python 3.2.3

$ lddtree -l /bin/bash
Traceback (most recent call last):
   File "/usr/bin/lddtree", line 450, in <module>
     sys.exit(main(sys.argv))
   File "/usr/bin/lddtree", line 437, in main
     elf = ParseELF(path, options.root, ldpaths)
   File "/usr/bin/lddtree", line 235, in ParseELF
     elf = ELFFile(f)
   File "/usr/lib64/python3.2/site-packages/elftools/elf/elffile.py", 
line 47, in __init__
     self._identify_file()
   File "/usr/lib64/python3.2/site-packages/elftools/elf/elffile.py", 
line 177, in _identify_file
     magic = self.stream.read(4)
   File "/usr/lib64/python3.2/codecs.py", line 300, in decode
     (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x83 in position 25: 
invalid start byte

$ locale
LANG=en_US.UTF-8
LC_CTYPE=fi_FI.UTF-8
LC_NUMERIC="en_US.UTF-8"
LC_TIME=en_GB.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=

- Samuli