Re: Quoting strings of digits

Hi Thomas,

In my humble opinion, I think the problem is on the Java side.
If I quote the spec for YAML 1.2 :
"Decimal integer notation, with a leading “-” character for negative
values, matching the regular expression 0 | -? [1-9] [0-9]*"
As you can see, there is no leading zero tolerated for integers except
for the value 0.
Hence 08063075 is a valid string element, pyyaml can strip the quotes
and snakeyaml should understand that.

Best regards,
   Laurent Lyaudet

2017-11-20 2:10 GMT+01:00 Thomas Conway <[email protected]>:
> Hi Yamlies,
>
> I have a bit of a problem where some of our tools use Java, and some Python
> (2). The output of the python is consumed by the Java, and inconsistencies
> are leading to some problems. My question is which if any behaviours are
> incorrect with respect to the specification?
>
> I've cut down the problem to the following.
>
> Consider the following python code (using pyyaml):
>
> import sys
> import yaml
> w = {'userName': 'scientist ', 'userEmail': '[email protected]',
> 'sampleName': '08063075', 'fastqDir':
> '/foo/bar/baz/171108_M00139_0253_000000000-BHFD5/ProjectFolders/Project_Qux-Wombat-/Sample_08063075',
> 'analysis': 'Somatic_Run375_MY_DY_08112017', 'laneNo': 1, 'panel':
> 'Somatic_Panel_Manifest_v4_23_10_2015'}
> yaml.dump(w, sys.stdout, default_flow_style=False)
>
> which produces the output:
>
> analysis: Somatic_Run375_MY_DY_08112017
> fastqDir:
> /foo/bar/baz/171108_M00139_0253_000000000-BHFD5/ProjectFolders/Project_Qux-Wombat-/Sample_08063075
> laneNo: 1
> panel: Somatic_Panel_Manifest_v4_23_10_2015
> sampleName: 08063075
> userEmail: [email protected]
> userName: 'scientist '
>
> Note in particular that the string value for the key 'sampleName' is a
> sequence of digits with a leading zero, and is not quoted.
>
> When we read it in to our java system (using snakeyaml), the unquoted
> sequence of digits is turned into an integer, which means that subsequent
> steps drop the leading zero.
>
> I've tried reading the specification, but I can't see that it defines the
> conversion.
>
> Is the serialisation valid?
>
> Is the conversion of the string of digits to an integer valid?
>
> Thanks for any precision you can add to my understanding,
>
> Tom.
> --
> Dr Thomas Conway
> [email protected]
> My friends, love is better than anger. Hope is better than fear. Optimism is
> better than despair. So let us be loving, hopeful and optimistic. And we'll
> change the world. - Jack Layton
>
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