Re: [dpdk-dev] [PATCH v4] devtools: add new SPDX license compliance checker

[Stephen Hemminger <stephen@networkplumber.org>]

On Thu, 11 Jun 2020 23:39:55 +0200
Thomas Monjalon <thomas@monjalon.net> wrote:

> 24/02/2020 22:01, Stephen Hemminger:
> > +tmpfile=$(mktemp)  
> 
> Please check how other temp files are created in other scripts
> for consitency.
> 
> > +    git grep -L SPDX-License-Identifier -- \
> > +	':^.git*' ':^.ci/*' ':^.travis.yml' \
> > +	':^README' ':^MAINTAINERS' ':^VERSION' ':^ABI_VERSION' \
> > +	':^*/Kbuild' ':^*/README' \
> > +	':^license/' ':^doc/' ':^config/' ':^buildtools/' \  
> 
> I think doc/ should be part of the license check,
> same for buildtools/.
> 
> > +	':^*.cocci' ':^*.abignore' \
> > +	':^*.def' ':^*.map' ':^*.ini' ':^*.data' ':^*.cfg' ':^*.txt' \
> > +	> $tmpfile
> > +
> > +    errors=0
> > +    while read -r line
> > +    do $quiet || echo $line
> > +       errors=$((errors + 1))  
> 
> I'm surprised this works for you.
> In general, "while" creates a subshell which makes impossible
> updating a variable.
> I recommend using "for" with IFS=$'\n'.
> 
> > +    done < $tmpfile
> > +}
> > +
> > +check_boilerplate() {
> > +    if $verbose ; then
> > +	echo
> > +	echo "Files with redundant license text"
> > +	echo "---------------------------------"
> > +    fi
> > +
> > +    git grep -l Redistribution -- \
> > +	':^license/' ':^/devtools/check-spdx-tag.sh' |
> > +	while read line
> > +	do $quiet || echo $line
> > +	   warnings=$((warnings + 1))
> > +	done  
> 
> Same comment about "while" subshell.
> 
> > +
> > +    warnings=0
> > +    while read -r line
> > +    do $quiet || echo $line
> > +       warnings=$((errors + 1))  
> 
> Here too
> 
> > +    done < $tmpfile
> > +}  
> 
> [...]
> > +Each file must begin with a special comment containing the
> > +`Software Package Data Exchange (SPDX) License Identfier <https://spdx.org/using-spdx-license-identifier>`_.  
> 
> Typo: Identifier
> 
> > +
> > +Generally this is the BSD License, except for code granted special exceptions.  
> 
> Is a verb missing?
> 
> > +The SPDX licences identifier is sufficient, a file should not contain
> > +an additional text version of the license (boilerplate).  

Thanks for the feedback.
Text processing is simpler in python, will rewrite in next version?