From 970308e5d845b5da6818131c75f84c38691691c6 Mon Sep 17 00:00:00 2001
From: zongyu <zzy2529420793@gmail.com>
Date: Wed, 29 Jul 2020 14:13:04 +0800
Subject: write src_unpack everytime is not elegant, use java-pkg-maven to
 handle it

Signed-off-by: zongyu <zzy2529420793@gmail.com>
---
 maven/eclass/java-pkg-maven.eclass                 | 60 ++++++++++++++++++++++
 .../gentoo/java/ebuilder/maven/MavenEbuilder.java  | 41 +++------------
 2 files changed, 67 insertions(+), 34 deletions(-)
 create mode 100644 maven/eclass/java-pkg-maven.eclass

diff --git a/maven/eclass/java-pkg-maven.eclass b/maven/eclass/java-pkg-maven.eclass
new file mode 100644
index 0000000..d926cc3
--- /dev/null
+++ b/maven/eclass/java-pkg-maven.eclass
@@ -0,0 +1,60 @@
+# Copyright 2004-2020 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# @ECLASS: java-pkg-binjar.eclass
+# @MAINTAINER:
+# zzy2529420793@gmail.com
+# @AUTHOR:
+# Zhang Zongyu
+# @BLURB: Eclass for unpacking Maven aritfacts
+# @DESCRIPTION:
+# This class is an attempt to unpack Maven artifacts properly.
+
+EXPORT_FUNCTIONS src_unpack
+
+# @ECLASS-VARIABLE: JAVA_SOURCE_FILENAME
+# @DESCRIPTION:
+# The filename of the source code.
+: ${JAVA_SOURCE_FILENAME:=${P}-sources.jar}
+
+# @ECLASS-VARIABLE: JAVA_TEST_SOURCE_FILENAME
+# @DESCRIPTION:
+# The filename of the source code for launch testing.
+: ${JAVA_TEST_SOURCE_FILENAME:=${P}-test-sources.jar}
+
+# @ECLASS-VARIABLE: JAVA_RESOURCE_DIRS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# A directory relative to ${S} which contain the resources of the
+# application. Give it a default value to handle src_unpack.
+: ${JAVA_RESOURCE_DIRS:=src/main/resources}
+
+# @FUNCTION: java-pkg-binjar_src_unpack
+# @DESCRIPTION:
+# Copy the binary jar into the expected place of java-pkg-simple.  Do
+# not extract files from archive.
+java-pkg-maven_src_unpack() {
+	for file in ${A}; do
+		case ${file} in
+			${JAVA_BINJAR_FILENAME}) ;;
+			${JAVA_SOURCE_FILENAME})
+				mkdir -p "${S}"/${JAVA_SRC_DIR}\
+					|| die "Could not create ${JAVA_SRC_DIR}"
+				unzip -q -o "${DISTDIR}"/${file} -d "${S}"/${JAVA_SRC_DIR}\
+					|| die "Could not unzip source code" ;;
+			${JAVA_TEST_SOURCE_FILENAME})
+				mkdir -p "${S}"/${JAVA_TEST_SRC_DIR}\
+					|| die "Could not create ${JAVA_TEST_SRC_DIR}"
+				unzip -q -o "${DISTDIR}"/${file} -d "${S}"/${JAVA_TEST_SRC_DIR}\
+					|| die "Could not unzip source code for testing" ;;
+		esac
+	done
+
+	# the resources (maven resources are bundled inside source file)
+	cp "${S}"/${JAVA_SRC_DIR} "${S}"/${JAVA_RESOURCE_DIRS} -r || die
+	rm "${S}"/${JAVA_RESOURCE_DIRS}/META-INF -r || die
+	find "${S}"/${JAVA_RESOURCE_DIRS} -type f ! -name \*.properties \
+		-exec rm {} \; || die
+}
+
diff --git a/src/main/java/org/gentoo/java/ebuilder/maven/MavenEbuilder.java b/src/main/java/org/gentoo/java/ebuilder/maven/MavenEbuilder.java
index 3f74241..37d45a4 100644
--- a/src/main/java/org/gentoo/java/ebuilder/maven/MavenEbuilder.java
+++ b/src/main/java/org/gentoo/java/ebuilder/maven/MavenEbuilder.java
@@ -624,7 +624,13 @@ public class MavenEbuilder {
 
         writer.println('"');
         writer.println();
-        writer.println("inherit java-pkg-2 java-pkg-simple");
+        writer.print("inherit java-pkg-2 java-pkg-simple");
+
+        if (config.isFromMavenCentral()) {
+            writer.print(" java-pkg-maven");
+        }
+
+        writer.println("");
     }
 
     /**
@@ -849,11 +855,6 @@ public class MavenEbuilder {
                 writer.println(')');
             }
         }
-
-        if (config.isFromMavenCentral()) {
-            writeMavenUnpack(mavenProject, writer);
-        }
-
     }
 
     /**
@@ -865,32 +866,4 @@ public class MavenEbuilder {
         writer.println();
         writer.println("S=\"${WORKDIR}\"");
     }
-
-    /**
-     * modify src_unpack() if we use Maven distributed source codes.
-     *
-     * @param writer ebuild writer
-     */
-    private void writeMavenUnpack(final MavenProject mavenProject,
-            final PrintWriter writer) {
-        writer.println();
-        writer.println("src_unpack() {");
-        writer.println("\tmkdir -p \"${S}\"/${JAVA_SRC_DIR}");
-        writer.println(
-                "\tunzip \"${DISTDIR}\"/${P}-sources.jar" +
-                " -d \"${S}\"/${JAVA_SRC_DIR} || die");
-
-        /**
-         * unzip ${P}-test-sources.jar, uncomment it after the switch
-         * --test-source-uri is supported
-         if (mavenProject.hasTests()) {
-            writer.println("\tmkdir -p \"${S}\"/${JAVA_TEST_SRC_DIR}");
-            writer.println(
-                    "\tunzip \"${DISTDIR}\"/${P}-test-sources.jar" +
-                    " -d \"${S}\"/${JAVA_TEST_SRC_DIR} || die");
-         }
-        */
-
-        writer.println("}");
-    }
 }
-- 
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