Re: [PATCH 1/1] list-packageconfig-flag.py: add a script to list all PACKAGECONFIG's flags

[Hongxu Jia <hongxu.jia@windriver.com>]

Hi Paul,

I have updated the pull branch to rename the script and correct the comments
as your suggestions.

The suggestion about using bitbake parser to make the script more robust,
I need some time to do the investigation and I am very pleased to do that,
I will address this in follow-up pathch, would you think it's proper or not?

Thanks,
Hongxu

On 08/02/2013 04:24 PM, Paul Eggleton wrote:
> Hi Hongxu,
>
> Great idea! This should be very useful indeed.
>
> Just a few feedback points:
>
> On Thursday 01 August 2013 19:04:05 Hongxu Jia wrote:
>> list-packageconfig-flag.py will walk the METADIR and collect recipes which
>> have PACKAGECONFIG's flags.
>>
>> The default display is to list recipes which have PACKAGECONFIG's flags in
>> METADIR. If option '-f' is used, it will list PACKAGECONFIG's flags and all
>> affected recipes in METADIR
>>
>> EXAMPLE:
>> list-packageconfig-flag.py poky/meta poky/meta-yocto
>> RECIPE NAME          PACKAGECONFIG's flag
>> =========================================
>> libarchive_2.8.5.bb  acl xattr largefile zlib bz2 xz openssl libxml2 expat
>> strace_4.8.bb        libaio acl
>> connman.inc          wifi bluetooth 3g tist openvpn vpnc l2tp pptp wispr
>>
>> list-packageconfig-flag.py -f poky/meta poky/meta-yocto
>> PACKAGECONFIG's flag     RECIPE NAME
>> ====================================
>> speex                    gstreamer1.0-plugins-good.inc
>> keyutils                 rpm_5.4.9.bb
>> gallium-egl              mesa.inc
>>
>> [YOCTO #4368]
>>
>> Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
>> ---
>>   scripts/contrib/list-packageconfig-flag.py | 180
>> +++++++++++++++++++++++++++++ 1 file changed, 180 insertions(+)
>>   create mode 100755 scripts/contrib/list-packageconfig-flag.py
> I think the script ought to be called "list-packageconfig-flags" rather than
> "list-packageconfig-flag".
>
>> ...
>> +def parse_recipe(recipe):
>> +    ''' Parse a recipe to collect PACKAGECONFIG's flags '''
> This should say "collect available PACKAGECONFIG flags". The same applies to
> other messages/comments.
>
>> +    prog = re.compile(r' *PACKAGECONFIG\[(?P<flag>.*)\] *=.*')
>> +    try:
>> +        r = open(recipe)
>> +    except IOError as (errno, strerror):
>> +        print >> sys.stderr, 'WARNING: Failed to open recipe', recipe
>> +
>> +    flaglist = []
>> +    for line in r:
>> +        # Strip any comments from the line
>> +        line = line.rsplit('#')[0]
>> +        m = prog.match(line)
>> +        if m:
>> +            flaglist.append(m.group('flag'))
>> +    r.close()
>> +
>> +    return flaglist
>>
>> +def process_recipes(metadir):
>> +    ''' Collect recipes which have PACKAGECONFIG's flags in METADIR '''
>> +    # recipesdict = {'recipe': ['flag1', 'flag2',...]}
>> +    recipesdict = {}
>> +    for root,dirs,files in os.walk(metadir):
>> +        for name in files:
>> +            if name.find(".bb") >= 0 or name.find(".inc") >= 0:
>> +                flaglist = parse_recipe(os.path.join(root,name))
>> +                if flaglist:
>> +                    recipesdict[name] = flaglist
>> +
>> +    return recipesdict
> So, this is fairly simple and works for most cases; however it would probably
> be a bit more robust if the script used bitbake's own parser to extract the
> flags. The "tinfoil" module should help with this. We can always address this
> in a follow-up patch later on, though - I can certainly show you some examples
> of how to do this or I can do it, whichever you prefer.
>
> Cheers,
> Paul
>