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turtles
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Joined: 31 Dec 2004
Posts: 1696
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 Posted: Sun Nov 03, 2024 10:26 pm Post subject: use portage to split catagory package version and revision? |
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Greetings Gentooers I am atempting to write a small python program that will take a category/package[version][revision]
and split it into package version and revision revision (if any) on the command line
for this I am using use the function catpkgsplit from /usr/lib/python3.11/site-packages/portage/versions.py
I have the the folowing code saved as a file split_cpv.py:
| Code: |
#!/usr/bin/python
# use function from /usr/lib/python3.11/site-packages/portage/versions.py
# to split package version and revision revision (if any)
import sys
import portage
mysplit = None;
if len(sys.argv) > 1:
mysplit = sys.argv[1]
if mysplit is None:
sys.exit(0)
else: print ('mysplit', mysplit)
p_split = portage.catpkgsplit(mysplit)
if isinstance(p_split, (list, tuple, dict, str)):
print (p_split[0], ' ', p_split[1], ' ', p_split[2], ' ', p_split[3] )
else:
print(f"The p_split object is not as exprected. It is of type: {type(p_split)}") |
and if I run it like
| Code: | | split_cpv.py sys-apps/portage |
I dont get anything
but if I have a version like so:
| Code: | | split_cpv.py sys-apps/portage-3.0.65 |
it works
Anyone have an Idea how I could get it to also work for pacakges without a version?
Thanks
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grknight
Retired Dev
Joined: 20 Feb 2015
Posts: 1901
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| Posted: Sun Nov 03, 2024 11:10 pm Post subject: |
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| turtles wrote: | | Anyone have an Idea how I could get it to also work for pacakges without a version? |
Back it up with portage.catsplit when the other call does not return the expected split (portage.catpkgsplit always needs package and version, category and revision are optional) |
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CaptainBlood
Advocate
Joined: 24 Jan 2010
Posts: 3838
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| Posted: Sun Nov 03, 2024 11:20 pm Post subject: |
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| Code: | | app-portage/portage-utils-0.97 (/usr/bin/qatom -> q) |
| Code: | qatom(1) qatom qatom(1)
NAME
qatom - split atom strings
SYNOPSIS
qatom [opts] <pkg>
DESCRIPTION
qatom parses strings into atoms and optionally compares them. The pars‐
ing into atoms results in CATEGORY, PN (package name), PV (package ver‐
sion), PR (package revision), SLOT and REPO. Next to these version
qualifiers (e.g. >, <, or =) and optional * suffix are extracted. All
but PN are optional.
Comparison of atoms returns the relationship between two parsed atoms.
qatom does not allow to test conditions. It is possible to perform mul‐
tiple comparisons by simply adding more arguments. Comparisons are,
however, always performed two by two, so there must be an even count of
arguments to the compare function.
The qatom applet is a direct wrapper around the atom parsing functional‐
ities used by various other applets. As such this applet allows easy
testing or atom parsing and comparison behaviour.
OPTIONS
-F <arg>, --format <arg>
Specify a custom output format. The default format is
%{CATEGORY} %{PN} %{PV} %[PR] %[SLOT] %[pfx] %[sfx]
Conversion specifiers start with a % symbol and are followed by
either { or [. Next is the name of the field to expand, followed
by a matching } or ]. The difference between { and [ is that the
latter is only printed if the field referred is set, while the
former prints <unset> in that case.
The following fields are supported, which are inline with the
variables from ebuild(5).
CATEGORY
The category of the package.
P The package name and version without the ebuild revision.
PN The package name.
PV The package version without the ebuild revision.
PVR The package version including ebuild revision, which is
also printed when zero, unlike for PF.
PF The package name, version and revision when not zero.
Thus, a zero revision -r0 is not printed.
PR The ebuild revision, when force printed, outputs -r0 when
unset.
SLOT The package slot, when force printed, outputs - when un‐
set.
REPO The package repository.
pfx The package prefixes, that is version specifiers.
sfx The package suffices, currently that is just the asterisk.
-c, --compare
Compare two atoms.
-s, --scompare
Compare two atoms in the given order data, query.
-p, --print
Print reconstructed atom.
-l, --lookup
Lookup atom in tree.
--root <arg>
Set the ROOT env var.
-v, --verbose
Force all expansions, basically treat all [ like {.
-q, --quiet
Ignored for compatibility with other qapplets.
-C, --nocolor
Ignored for compatibility with other qapplets.
--color
Force color in output.
-h, --help
Print this help and exit.
-V, --version
Print version and exit.
ANTISLOT
A feature present in portage-utils is the so-called antislot, and is ac‐
tivated by starting the atom with a carrot (ˆ), in place of the blocker
bang (!). The antislot is similar to the inversing behaviour of a
blocker, but only operates on SLOT and SUBSLOT, and requires SLOT to be
available, e.g. it won’t match unset SLOT (NULL).
The antislot is mostly useful with dependencies and is best described
with an example. Consider a perl upgrade from perl:0/5.28 to
perl:0/5.30. To find a consumer for perl:0/5.28 a simple match can be
made, e.g. using qdepends
$ qdepends -Q perl:0/5.28
virtual/perl-ExtUtils-MakeMaker-7.340.0-r1: ... dev-lang/perl:0/5.28 ...
...
However, to query after perl:0/5.30 is installed, which packages are
still not rebuilt (e.g. depending on an older perl: 5.28, 5.26, etc.)
one can use the antislot:
$ qdepends -Q ˆperl:0/5.30
...
This will return any package that depends on perl:0 not having subslot
5.30.
Obviously this can be tested using qatom using the -c option:
$ qatom -c ˆperl:0/5.30 perl-5.28.1:0/5.28
ˆperl:0/5.30 == perl-5.28.1:0/5.28 |
may help.
Thks 4 ur attention, interest & support.
_________________
USE="-* ..." in /etc/portage/make.conf here, i.e. a countermeasure to portage implicit braces, belt & diaper paradigm
LT: "I've been doing a passable imitation of the Fontana di Trevi, except my medium is mucus. Sooo much mucus. " |
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turtles
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Joined: 31 Dec 2004
Posts: 1696
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| Posted: Mon Nov 04, 2024 2:46 am Post subject: |
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| grknight wrote: | | turtles wrote: | | Anyone have an Idea how I could get it to also work for pacakges without a version? |
Back it up with portage.catsplit when the other call does not return the expected split (portage.catpkgsplit always needs package and version, category and revision are optional) |
Thanks that did it
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