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

["Miroslav Šulc" <fordfrog@gentoo.org>]

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hi,

as per bug https://bugs.gentoo.org/693022 we need to add dependency on 
dev-java/gnu-jaf (or dev-java/sun-jaf) to the package. unfortunately 
ant-tasks.eclass variable ANT_TASK_DEPNAME supports only single 
dependency (it was sufficient till now), but we need one more in this 
case. the introduced patch adds support for alternatively specifying 
ANT_TASK_DEPNAME as an array and handle it correctly. i've tested the 
patch and all seems to work fine.

please let me know if something can/should be improved.

thanks.

miroslav


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