Re: [PATCH 1/2] check-headers: add header usage checks for .c files

> Junio C Hamano <gitster@pobox.com> writes:
> 
> > David Aguilar <davvid@gmail.com> writes:
> >
> >> Teach check-header.sh to ensure that the first included header in .c
> >> files is either git-compat-util.h, builtin.h, or cache.h.
> >>
> >> Ensure that common-cmds.h is only included by help.c.
> >>
> >> Move the logic into functions so that we can skip parts of the check.
> >>
> >> Signed-off-by: David Aguilar <davvid@gmail.com>
> >> ---
> >> This depends on my previous patch that adds check-header.sh.
> >> ...
> >> +check_headers () {
> >> +	for header in *.h ewah/*.h vcs-svn/*.h xdiff/*.h
> >> +	do
> >> +		check_header "$header"
> >
> > Hmmmm, doesn't check_header run "$@" as a command?
> 
> Taking the previous two together, perhaps

>  check-headers.sh | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/check-headers.sh b/check-headers.sh
> index 7f25e7a..526381e 100755
> --- a/check-headers.sh
> +++ b/check-headers.sh
> @@ -20,6 +20,7 @@ maybe_exit () {
>  
>  check_header () {
>  	header="$1"
> +	shift
>  	case "$header" in
>  	common-cmds.h)
>  		# should only be included by help.c, not checked
> @@ -38,15 +39,17 @@ check_header () {
>  check_headers () {
>  	for header in *.h ewah/*.h vcs-svn/*.h xdiff/*.h
>  	do
> -		check_header "$header"
> +		check_header "$header" "$@"
>  	done
>  }
>  
>  check_header_usage () {
> -	first=$(grep '^#include' "$1" |
> -		head -n1 |
> -		sed -e 's,#include ",,' -e 's,"$,,')
> -
> +	first=$( 
> +		sed -n -e '/^#include/{
> +			s/#include ["<]\(.*\)".*/\1/p
> +			q
> +		}' "$1"
> +	)
>  	case "$first" in
>  	cache.h|builtin.h|git-compat-util.h)
>  		# happy