From 11f45e92ad0197f90a70dd27bee470513c683a0f Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Wed, 03 Oct 2012 16:13:34 -0400
Subject: Implement ob-unpacksource.

---
diff --git a/locale/en_US/opkbuild.sh b/locale/en_US/opkbuild.sh
index 87b7d74..9f6705a 100644
--- a/locale/en_US/opkbuild.sh
+++ b/locale/en_US/opkbuild.sh
@@ -61,3 +61,15 @@ msg_opkbuild_cant_rm_src_pkg_data='Can'\''t clean up data directory for source p
 
 # ob-buildenv
 msg_opkbuild_setup_build_env='Setting up build environment...'
+
+# ob-unpacksource
+msg_opkbuild_unpacking_native='Copying native source directory...'
+msg_opkbuild_cant_unpack_native='Can'\''t copy native source directory'
+msg_opkbuild_no_sources='No native or upstream sources found'
+msg_opkbuild_multiple_upstream_sources='Multiple upstream source archives found'
+msg_opkbuild_unsupported_archive_compression='Compression format with extension "%s" nsupported'
+msg_opkbuild_no_upstream_dirs='No directories found in upstream source archive'
+msg_opkbuild_multiple_top_upstream_dirs='Multiple top-level directories found in upstream source archive'
+msg_opkbuild_unpacking_upstream='Extracting upstream source archive...'
+msg_opkbuild_cant_unpack_upstream='Can'\''t extract upstream source archive'
+msg_opkbuild_cant_move_native='Can'\''t move extracted upstream source directory'
diff --git a/src/Makefile.in b/src/Makefile.in
index 9567306..3d02603 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -38,8 +38,8 @@ sed_script = s&@@PACKAGE_NAME@@&$(package_name)&;\
 
 SRCS = opkbuild.sh \
        ob-checkbuilddeps.sh \
-       ob-buildenv.sh #\
-       ob-unpacksource.sh \
+       ob-buildenv.sh \
+       ob-unpacksource.sh #\
        ob-applypatches.sh \
        ob-installplatconf.sh \
        ob-installdocs.sh \
diff --git a/src/ob-unpacksource.sh b/src/ob-unpacksource.sh
new file mode 100644
index 0000000..8b3a01e
--- /dev/null
+++ b/src/ob-unpacksource.sh
@@ -0,0 +1,124 @@
+#!@@SH@@
+#
+# opkbuild
+# src/ob-unpacksource
+# Unpack native or upstream source.
+#
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+. '@@LIBOPKBUILD@@/load.sm'
+
+ob_use locale
+ob_use output
+ob_use package
+
+upstream_archive_base=
+upstream_archive=
+upstream_archive_z=
+upstream_archive_dir=
+
+main()
+{
+	ob_set_text_domain 'opkbuild'
+
+	ob_init_package '..'
+	ob_parse_package_metadata -c '.opkbuild.cache'
+
+	if [ -d ../src ]; then
+		unpack_native
+	else
+		unpack_upstream
+	fi
+}
+
+unpack_native()
+{
+	ob_info "$(ob_get_msg 'unpacking_native')"
+	cp -Rp ../src src || ob_error "$(ob_get_msg 'cant_unpack_native')"
+}
+
+unpack_upstream()
+{
+	get_upstream_archive
+	get_upstream_compression
+	get_upstream_dir
+	extract_upstream
+}
+
+get_upstream_archive()
+{
+	upstream_archive_base="${OB_SOURCE}-${OB_SOURCE_VERSION_UPSTREAM}.orig.tar."
+	upstream_archive="$(find .. -name "${upstream_archive_base}*")"
+	case "$(echo "${upstream_archive}" | grep -v '^$' | wc -l)" in
+		0)
+			ob_error "$(ob_get_msg 'no_sources')"
+			;;
+		1)
+			;;
+		*)
+			ob_error "$(ob_get_msg 'multiple_upstream_sources')"
+			;;
+	esac
+}
+
+get_upstream_compression()
+{
+	z_ext="${upstream_archive#../${upstream_archive_base}}"
+	case "${z_ext}" in
+		gz)
+			upstream_archive_z='z'
+			;;
+		bz2)
+			upstream_archive_z='j'
+			;;
+		lz)
+			upstream_archive_z='a'
+			;;
+		Z)
+			upstream_archive_z='Z'
+			;;
+		*)
+			ob_error "$(ob_get_msg 'unsupported_archive_compression')" \
+				"${z_ext}"
+			;;
+	esac
+}
+
+get_upstream_dir()
+{
+	upstream_archive_dir="$(tar "-t${upstream_archive_z}f" \
+		"${upstream_archive}" | sed -n 's@^\(\./\|\)\([^/]*\)\(/\|\)$@\2@p')"
+	case "$(echo "${upstream_archive_dir}" | grep -v '^$' | wc -l)" in
+		0)
+			ob_error "$(ob_get_msg 'no_upstream_dirs')"
+			;;
+		1)
+			;;
+		*)
+			ob_error "$(ob_get_msg 'multiple_top_upstream_dirs')"
+	esac
+}
+
+extract_upstream()
+{
+	ob_info "$(ob_get_msg 'unpacking_upstream')"
+	tar "-x${upstream_archive_z}f" "${upstream_archive}" || \
+		ob_error "$(ob_get_msg 'cant_unpack_upstream')"
+	mv "${upstream_archive_dir}" src || \
+		ob_error "$(ob_get_msg 'cant_move_native')"
+}
+
+main "${@}"
--
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