[gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Jeroen Roovers]

For a while I've been thinking that it would be sweet to feed all
variants (enabled/disabled) of several USE flags to a script to automate
testing with different USE flag combinations.

USE=" x  y"
USE="-x  y"
USE=" x -y"
USE="-x -y"

This should be so simple to script but I can't figure out how to do it.
Anyone have any ideas or a ready example script?


     jer

Re: [gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Rick "Zero_Chaos" Farina]

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On 11/08/2012 01:18 PM, Jeroen Roovers wrote:
> For a while I've been thinking that it would be sweet to feed all
> variants (enabled/disabled) of several USE flags to a script to automate
> testing with different USE flag combinations.
> 
> USE=" x  y"
> USE="-x  y"
> USE=" x -y"
> USE="-x -y"
> 
> This should be so simple to script but I can't figure out how to do it.
> Anyone have any ideas or a ready example script?

if I'm not mistaken app-portage/tatt already can test all the possible
use flag combinations of a package. it sucks a little to use but it's
moderately functional.

- -Zero_Chaos
> 
> 
>      jer
> 
> 

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Re: [gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Fabian Groffen]

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On 08-11-2012 19:18:10 +0100, Jeroen Roovers wrote:
> For a while I've been thinking that it would be sweet to feed all
> variants (enabled/disabled) of several USE flags to a script to automate
> testing with different USE flag combinations.
> 
> USE=" x  y"
> USE="-x  y"
> USE=" x -y"
> USE="-x -y"
> 
> This should be so simple to script but I can't figure out how to do it.
> Anyone have any ideas or a ready example script?

% echo {x,-x}" "{y,-y}
x y x -y -x y -x -y

Is that what you need?


-- 
Fabian Groffen
Gentoo on a different level

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Re: [gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Ian Stakenvicius]

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On 08/11/12 01:41 PM, Fabian Groffen wrote:
> On 08-11-2012 19:18:10 +0100, Jeroen Roovers wrote:
>> For a while I've been thinking that it would be sweet to feed
>> all variants (enabled/disabled) of several USE flags to a script
>> to automate testing with different USE flag combinations.
>> 
>> USE=" x  y" USE="-x  y" USE=" x -y" USE="-x -y"
>> 
>> This should be so simple to script but I can't figure out how to
>> do it. Anyone have any ideas or a ready example script?
> 
> % echo {x,-x}" "{y,-y} x y x -y -x y -x -y
> 
> Is that what you need?
> 
> 


I'd expect the idea is to parse IUSE and run an individual test for
every combination of use flags (ie, n(IUSE) factorial tests)

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Re: [gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Fabian Groffen]

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On 08-11-2012 19:41:41 +0100, Fabian Groffen wrote:
> On 08-11-2012 19:18:10 +0100, Jeroen Roovers wrote:
> > For a while I've been thinking that it would be sweet to feed all
> > variants (enabled/disabled) of several USE flags to a script to automate
> > testing with different USE flag combinations.
> > 
> > USE=" x  y"
> > USE="-x  y"
> > USE=" x -y"
> > USE="-x -y"
> > 
> > This should be so simple to script but I can't figure out how to do it.
> > Anyone have any ideas or a ready example script?
> 
> % echo {x,-x}" "{y,-y}
> x y x -y -x y -x -y
> 
> Is that what you need?

Just in case...

$ echo $'\n'"USE=\""{x,-x}" "{y,-y}\"""

USE="x y" 
USE="x -y" 
USE="-x y" 
USE="-x -y"

Fabian


-- 
Fabian Groffen
Gentoo on a different level

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Re: [gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Alexandre Rostovtsev]

On Thu, 2012-11-08 at 19:18 +0100, Jeroen Roovers wrote:
> For a while I've been thinking that it would be sweet to feed all
> variants (enabled/disabled) of several USE flags to a script to automate
> testing with different USE flag combinations.
> 
> USE=" x  y"
> USE="-x  y"
> USE=" x -y"
> USE="-x -y"
> 
> This should be so simple to script but I can't figure out how to do it.
> Anyone have any ideas or a ready example script?
> 
> 
>      jer
> 

USE_variable=( foo bar baz )
USE_const=( wombat )

(( n = 0 ))
while (( n < 2**${#USE_variable[@]} )); do
    USE=${USE_const[@]}
    (( i = 0 ))
    while (( i < ${#USE_variable[@]} )); do
        if (( n & 2**i )); then
            USE+=" ${USE_variable[$i]}"
        else
            USE+=" -${USE_variable[$i]}"
        fi
        (( i++ ))
    done
    (( n++ ))
    echo ${USE}
done

# outputs:
# wombat -foo -bar -baz
# wombat foo -bar -baz
# wombat -foo bar -baz
# wombat foo bar -baz
# wombat -foo -bar baz
# wombat foo -bar baz
# wombat -foo bar baz
# wombat foo bar baz

Re: [gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Fabian Groffen]

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On 08-11-2012 13:46:16 -0500, Ian Stakenvicius wrote:
> I'd expect the idea is to parse IUSE and run an individual test for
> every combination of use flags (ie, n(IUSE) factorial tests)

pfff...

combs=
for flag in $( eval $(grep '^IUSE=' libdv-1.0.0-r2.ebuild) ; echo ${IUSE} ) ; do
    flag=${flag#+}
    flag=${flag#-}
    combs+='" "{'"${flag},-${flag}"'}'
done
combs="\$'\\n'IUSE=\\\"${combs#\" \"}\\\""
eval "echo ${combs}"


IUSE="debug sdl static-libs xv" 
IUSE="debug sdl static-libs -xv" 
IUSE="debug sdl -static-libs xv" 
IUSE="debug sdl -static-libs -xv" 
IUSE="debug -sdl static-libs xv" 
IUSE="debug -sdl static-libs -xv" 
IUSE="debug -sdl -static-libs xv" 
IUSE="debug -sdl -static-libs -xv" 
IUSE="-debug sdl static-libs xv" 
IUSE="-debug sdl static-libs -xv" 
IUSE="-debug sdl -static-libs xv" 
IUSE="-debug sdl -static-libs -xv" 
IUSE="-debug -sdl static-libs xv" 
IUSE="-debug -sdl static-libs -xv" 
IUSE="-debug -sdl -static-libs xv" 
IUSE="-debug -sdl -static-libs -xv"

Fabian


-- 
Fabian Groffen
Gentoo on a different level

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Re: [gentoo-dev] A script/binary that iterates over arguments and spits out different variants?

[Thomas Kahle]

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On 13:37 Thu 08 Nov 2012, Rick "Zero_Chaos" Farina wrote:
> On 11/08/2012 01:18 PM, Jeroen Roovers wrote:
> > For a while I've been thinking that it would be sweet to feed all
> > variants (enabled/disabled) of several USE flags to a script to automate
> > testing with different USE flag combinations.
> > 
> > USE=" x  y"
> > USE="-x  y"
> > USE=" x -y"
> > USE="-x -y"
> > 
> > This should be so simple to script but I can't figure out how to do it.
> > Anyone have any ideas or a ready example script?
> 
> if I'm not mistaken app-portage/tatt already can test all the possible
> use flag combinations of a package. it sucks a little to use but it's
> moderately functional.

It's used to write scripts for testing USE combinations and reverse
dependencies and also for stabilizing.  It can filter USE flags that are
irrelevant like "linguas_*", etc.  If 2^{number of flags} is too much it
will give you a random subset, etc.  It can grab the necessary
information from bugzilla if you just give it a bugnumber and it can
also do many packages in one run.  The scripts are created using
templates, so in principle it should be pretty flexible.  I agree, it
sucks a little, but contributions are welcome.

Cheers,
Thomas




-- 
Thomas Kahle
http://dev.gentoo.org/~tomka/

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