On Tue, 2005-05-31 at 00:56 -0700, Zac Medico wrote:
> #!/usr/bin/python
> import sys
> if len(sys.argv)!=2:
> print "usage: %s <tbz2 file>" % sys.argv[0]
> sys.exit(1)
> sys.path = ["/usr/lib/portage/pym"]+sys.path
> import xpak
> mytbz2=xpak.tbz2(sys.argv[1])
> myuse=mytbz2.getelements("USE")
> myiuse=mytbz2.getelements("IUSE")
> for use in myiuse:
> operator="-"
> if use in myuse:
> operator="+"
> print operator + use + " "
Cool. This works as expected. But a few more questions and this is more
towards how portage handles the Padded data in the tbz2.
Looking that the variables of IUSE and USE via
print myuse
and
print myiuse
I get :
['x86', 'X', 'aac', 'aalib', 'acl', 'acpi', 'aim', 'alsa', 'apache2',
'avi', 'bash-completion', 'berkdb', 'bitmap-fonts', 'bonobo', 'bzlib',
.... SNIP ......
'kernel_linux', 'elibc_glibc']
['mozilla', 'gtkhtml', 'debug', 'debug']
So if I understand it correctly, what is being done is XPAK will take
the USE flags from the system which compiled the binary and then sort of
make a comparison with the USE flags for that particular package and
work from there? Am I right?
Doing a
$strings /usr/portage/packages/All/liferea-0.9.1.tbz2
gets me
[snip]
...
XPAKPACK <--- This marks the start of the XPAK padding
ASFLAGS
CATEGORY
CBUILD
CDEPEND
CFLAGS
CHOST
CTARGET
CXXFLAGS
DEPEND
EXTRA_ECONF
EXTRA_EINSTALL
EXTRA_EMAKE
FEATURES
INHERITED
IUSE
LDFLAGS
LIBCFLAGS
LIBCXXFLAGS
LICENSE
PDEPEND
PKGUSE
PROVIDE
RDEPEND
RESTRICT
SLOT
environment.bz2
liferea-0.9.1.ebuild
net-news
-O2 -march=pentium3 -fomit-frame-pointer -pipe -falign-functions=64
-mmmx -msse -msse2
i686-pc-linux-gnu
-O2 -march=pentium3 -fomit-frame-pointer -pipe -falign-functions=64
-mmmx -msse -msse2
>=x11-libs/gtk+-2
>=dev-libs/libxml2-2.5.10
mozilla? ( www-client/mozilla
gtkhtml? ( =gnome-extra/libgtkhtml-2* )
!mozilla? ( =gnome-extra/libgtkhtml-2* )
>=gnome-base/gconf-2
dev-util/pkgconfig >=sys-apps/sed-4
autoaddcvs autoconfig buildpkg candy ccache distlocks sandbox sfperms
strict
libtool gnome.org debug fdo-mime gnome2 libtool gnome.org debug fdo-mime
gnome2 libtool gnome.org debug fdo-mi
me gnome2 libtool gnome.org debug fdo-mime gnome2
mozilla gtkhtml debug debug <---- Package USE Flags
[SNIP]
x86 X aac aalib acl acpi aim alsa apache2 avi bash-completion berkdb
.... SNIP .....
kernel_linux elibc_glibc
--
Ow Mun Heng
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