Re: [PATCH 1/2] v4l2-compliance: Add version command

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On 10/07/2020 15:25, Laurent Pinchart wrote:
> Hi Paul,
> 
> Thank you for the patch.
> 
> On Fri, Jul 10, 2020 at 10:18:12PM +0900, Paul Elder wrote:
>> Add a --version option to v4l2-compliance to retrieve the version of
>> v4l2-compliance.
>>
>> Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
>> ---
>>  utils/v4l2-compliance/v4l2-compliance.cpp | 11 +++++++++++
>>  1 file changed, 11 insertions(+)
>>
>> diff --git a/utils/v4l2-compliance/v4l2-compliance.cpp b/utils/v4l2-compliance/v4l2-compliance.cpp
>> index 4b45f110..72b9768f 100644
>> --- a/utils/v4l2-compliance/v4l2-compliance.cpp
>> +++ b/utils/v4l2-compliance/v4l2-compliance.cpp
>> @@ -79,6 +79,7 @@ enum Option {
>>  	OptMediaBusInfo = 'z',
>>  	OptStreamFrom = 128,
>>  	OptStreamFromHdr,
>> +	OptVersion,
>>  	OptLast = 256
>>  };
>>  
>> @@ -153,9 +154,15 @@ static struct option long_options[] = {
>>  	{"stream-all-formats", optional_argument, 0, OptStreamAllFormats},
>>  	{"stream-all-io", no_argument, 0, OptStreamAllIO},
>>  	{"stream-all-color", required_argument, 0, OptStreamAllColorTest},
>> +	{"version", no_argument, 0, OptVersion},
>>  	{0, 0, 0, 0}
>>  };
>>  
>> +static void version()
>> +{
>> +	printf("v4l2-compliance " PACKAGE_VERSION "\n");
> 
> Is it enough to rely on the v4l-utils package version, or should we add
> a git commit count as well ? The traditional version number will make it
> difficult to test for features added between two released versions.

If you add a version option, then v4l2-compliance should also show the SHA.
It's already available (grep for SHA), so easy enough to add here.

Also, if you add --version here, then it really should be added to most
other utils as well (certainly media-ctl and cec-follower/ctl/compliance).

Regards,

	Hans

> 
>> +}
>> +
>>  static void usage()
>>  {
>>  	printf("Usage:\n");
>> @@ -244,6 +251,7 @@ static void usage()
>>  	printf("  -P, --no-progress  Turn off progress messages.\n");
>>  	printf("  -T, --trace        Trace all called ioctls.\n");
>>  	printf("  -v, --verbose      Turn on verbose reporting.\n");
>> +	printf("  --version          Show version information.\n");
>>  #ifndef NO_LIBV4L2
>>  	printf("  -w, --wrapper      Use the libv4l2 wrapper library.\n");
>>  #endif
>> @@ -1664,6 +1672,9 @@ int main(int argc, char **argv)
>>  		case OptNoProgress:
>>  			no_progress = true;
>>  			break;
>> +		case OptVersion:
>> +			version();
>> +			std::exit(EXIT_SUCCESS);
>>  		case ':':
>>  			fprintf(stderr, "Option `%s' requires a value\n",
>>  				argv[optind]);
> 




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