Re: [gentoo-dev] RFC: ant-tasks.eclass patch

[Michał Górny]

On Wed, 2019-09-25 at 20:47 +0200, Miroslav Šulc wrote:
> diff --git a/eclass/ant-tasks.eclass b/eclass/ant-tasks.eclass
> index 309df084d156..26df9de26f1a 100644
> --- a/eclass/ant-tasks.eclass
> +++ b/eclass/ant-tasks.eclass
> @@ -54,7 +54,9 @@ ANT_TASK_NAME="${PN#ant-}"
>  # @DESCRIPTION:
>  # Specifies JAVA_PKG_NAME (PN{-SLOT} used with java-pkg_jar-from) of the package
>  # that this one depends on. Defaults to the name of ant task, ebuild can
> -# override it before inheriting this eclass.
> +# override it before inheriting this eclass. In case there is more than one
> +# dependency, the variable can be specified as bash array with multiple strings,
> +# one for each dependency.
>  ANT_TASK_DEPNAME=${ANT_TASK_DEPNAME-${ANT_TASK_NAME}}
>
>  # @ECLASS-VARIABLE: ANT_TASK_DISABLE_VM_DEPS
> @@ -105,7 +107,7 @@ S="${WORKDIR}/${MY_P}"
>  # base: performs the unpack, build.xml replacement and symlinks ant.jar from
>  #	ant-core
>  #
> -# jar-dep: symlinks the jar file(s) from dependency package
> +# jar-dep: symlinks the jar file(s) from dependency package(s)
>  ant-tasks_src_unpack() {
>  	[[ -z "${1}" ]] && ant-tasks_src_unpack all
>
> @@ -129,9 +131,17 @@ ant-tasks_src_unpack() {
>  				# ant.jar to build against
>  				java-pkg_jar-from --build-only ant-core ant.jar;;
>  			jar-dep)
> -				# get jar from the dependency package
> +				# get jar from the dependency package(s)
>  				if [[ -n "${ANT_TASK_DEPNAME}" ]]; then
> -					java-pkg_jar-from ${ANT_TASK_DEPNAME}
> +					local array=$(declare -p ANT_TASK_DEPNAME | grep "^declare \-a")
> +
> +					if [[ -n "${array}" ]]; then
> +						for depname in "${ANT_TASK_DEPNAME[@]}"; do
> +							java-pkg_jar-from ${depname}
> +						done

I don't think you need two branches here.  Non-array variable is
equivalent to an array with a single element for the purpose of [@], so
your 'for' loop will work correctly both for non-array and array.

> +					else
> +						java-pkg_jar-from ${ANT_TASK_DEPNAME}
> +					fi
>  				fi;;
>  			all)
>  				ant-tasks_src_unpack base jar-dep;;

-- 
Best regards,
Michał Górny