Re: [dpdk-dev] [dpdk-stable] [PATCH v3 1/2] Enable codespell by default. Can be disabled from config file.

[Michael Santana Francisco <msantana@redhat.com>]

On 3/1/19 4:08 PM, Thomas Monjalon wrote:
> 01/03/2019 21:24, Michael Santana Francisco:
>> On 3/1/19 12:51 PM, Thomas Monjalon wrote:
>>> 01/03/2019 18:43, Thomas Monjalon:
>>>> 01/03/2019 18:08, Michael Santana:
>>>>> +# Enable codespell by default. This can be overwritten from a config file.
>>>>> +# You can also enable codespell by setting DPDK_CHECKPATCH_CODESPELL to a valid path
>>>>> +# to a dictionary.txt file if your dictionary.txt is not in the default location.
>>> This line length won't pass chekpatch ;)
>>>
>>>> Better to avoid "you" form in such comment.
>>>>
>>>>> +DPDK_CHECKPATCH_CODESPELL=enable
>>> It will override the value if passed with an environment variable.
>>> You should do the same as for DPDK_CHECKPATCH_LINE_LENGTH.
>> If I understood you correctly, you want to be able to set these
>> parameters via environment variables (and take precedence over any
>> variables set in any config file)
> No :)
> The scenario is to have no config file and use environment variables only.
>
>> The problem is right now that any environment variable is overwritten by
>> the variable being set in one of the config files
>> The only way I can think of doing this would be by saving the DPDK
>> variables (passed via environment) to a file or ironically temporary
>> variables (which themselves can also be overwritten, so that doesn't
>> really solve the problem) before being overwritten, and then restoring
>> said variables after the call to source.
>> This would add extra clutter in checkpatches, but it can be avoided by
>> doing it in load-devel-config instead.
>>
>> So the bottom line is, environment variables take overall precedence,
>> then config files, and then default
>>
>> Does this sound sane enough?
>> If anyone knows a better way to do this please share.
> Look how DPDK_CHECKPATCH_LINE_LENGTH is handled.
> The default value is used if DPDK_CHECKPATCH_LINE_LENGTH is not set,
> neither by environment nor config file.
>
> I think you can just do this after loading config file:
>
> DPDK_CHECKPATCH_CODESPELL=${DPDK_CHECKPATCH_CODESPELL:-enable}
Oh! So it's much simpler than I thought. Yeah. I will remove what I have 
now and put in your line to go along with the length= line. Will also 
change the comment as I didn't remove the 'you' form in the last commit
>
> or check for empty value in the test:
>
> [ -z "$DPDK_CHECKPATCH_CODESPELL" -o "$DPDK_CHECKPATCH_CODESPELL" = enable ]
>
>
>> I am including in DPDK_CHECKPATCH_PATH, because might as well at this
>> point.
> Empty DPDK_CHECKPATCH_PATH is already handled.
>
>>>>>    # Load config options:
>>>>>    # - DPDK_CHECKPATCH_PATH
>>>>>    # - DPDK_CHECKPATCH_LINE_LENGTH
>>>>> +# - DPDK_CHECKPATCH_CODESPELL
>>>>>    . $(dirname $(readlink -e $0))/load-devel-config
>>>>>    
>>>>>    VALIDATE_NEW_API=$(dirname $(readlink -e $0))/check-symbol-change.sh
>>>>> @@ -13,6 +18,12 @@ length=${DPDK_CHECKPATCH_LINE_LENGTH:-80}
>>>>>    
>>>>>    # override default Linux options
>>>>>    options="--no-tree"
>>>>> +if [ "$DPDK_CHECKPATCH_CODESPELL" == "enable" ]; then
>>>> This is a bashism.
>>>> Standard sh uses a simple =
>>>>
>>>> No need for a v4, I can fix it.
>>> Because of the required change for the env var case,
>>> please do a v4.
>
>