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#!/bin/bash

set -e

source "${BUILD_SCRIPT_ROOT}"/helpers
setup-repo-vars

#Translate
#  https://android-build.linaro.org/jenkins/job/doanac_build-script-generation/6/
# into
#  http://snapshots.linaro.org/android/~doanac/build-script-generation/6/
PINNED_MANIFEST_URL=${BUILD_URL/http*jenkins\/job\//http://snapshots.linaro.org/android/~}
# change the dash in doanac_build... to doanac/build...
PINNED_MANIFEST_URL=${PINNED_MANIFEST_URL/_/\/}

if [ -n "$SOURCE_OVERLAY" ]; then
	USAGE_SUM="'Usage: \$0 -m <manifest.xml> -o <overlay.tar> [ -t -d directory -l login ]'"
	USAGE_OVERLAY="'\\n -m <manifest>    If -t is not used, then using a browser with cookies you\\n                  must download the pinned manifest from:\\n             $PINNED_MANIFEST_URL\\n -o               The path to the vendor required overlay.\\n                  Can be downloaded from http://snapshots.linaro.org/android/binaries/$SOURCE_OVERLAY\\n'"
	USAGE_OPTOVERLAY="m:o:"
	USAGE_OPTHANDLER="o   ) SOURCE_OVERLAY=\$OPTARG;;  m   ) MANIFEST=\$OPTARG;;"
else
	USAGE_SUM="'Usage: \$0 [ -t -d directory -l login ]'"
fi

header()
{
	cat <<EOF
#!/bin/bash
# Author+=amit.pundir@linaro.org

set -e

EXACT=1
DIR=android
ID=default-bot

usage()
{
	echo $USAGE_SUM
	echo -e $USAGE_OVERLAY
	echo " -t                Reproduce the build from the tip of the branch rather than doing"
	echo "                   an exact replica build"
	echo " -d <directory>    The directory to download code and build from"
	echo "                   Default: \${DIR}"
	echo " -l <login-id>     login-id to clone from linaro-private git repositories"
	echo "                   If in doubt, kindly raise access request to rt@linaro.org"
	echo "                   Default: \${ID}"
	exit 1
}

while getopts   "${USAGE_OPTOVERLAY}d:l:ht" optn; do
	case    \$optn   in
		$USAGE_OPTHANDLER
		d   ) DIR=\$OPTARG;;
		l   ) ID=\$OPTARG;;
		t   ) EXACT=0;;
		h   ) usage; exit 1;;
        esac
done

UBUNTU=\`cat /etc/issue.net | cut -d' ' -f2\`
HOST_ARCH=\`uname -m\`
if [ \${HOST_ARCH} == "x86_64" ] ; then
	PKGS='git-core gnupg flex bison gperf build-essential zip curl zlib1g-dev libc6-dev lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z1-dev libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown libxml2-utils xsltproc uboot-mkimage openjdk-6-jdk openjdk-6-jre vim-common'
else
	echo "ERROR: Only 64bit Host(Build) machines are supported at the moment."
	exit 1
fi
if [[ \${UBUNTU} =~ "12." ]]; then
	PKGS+=' lib32readline-gplv2-dev'
elif [[ \${UBUNTU} =~ "10.04" ]] ; then
	PKGS+=' ia32-libs lib32readline5-dev'
else
	echo
	echo "ERROR: Only Ubuntu 10.04, 12.04 and 12.10 versions are supported."
	exit 1
fi

echo "Checking and installing missing dependencies if any .. .."
sudo apt-get install \${PKGS}

MISSING=\`dpkg-query -W -f='\${Status}\n' \${PKGS} 2>&1 | grep 'No packages found matching' | cut -d' ' -f5\`
if [ -n "\$MISSING" ] ; then
	echo "Missing required packages:"
	for m in \$MISSING ; do
		echo -n "\${m%?} "
	done
	echo
	exit 1
fi

EOF
	if [ -n "$SOURCE_OVERLAY" ]; then
		cat <<EOF
if [ "a\$MANIFEST" == "a" -a \$EXACT -eq 1 ]; then
	echo "ERROR: no pinned manifest provided. Please download from $PINNED_MANIFEST_URL. This must be done from a browser that accepts cookies."
	exit 1
fi
if [ "a\$SOURCE_OVERLAY" == "a" ]; then
	echo "ERROR: no source overlay provided. Please download from http://snapshots.linaro.org/android/binaries/$SOURCE_OVERLAY. This must be done from a browser that accepts cookies."
	echo "Do you want to continue without overlay (which may result in broken build)? (y/n) "
	read OVERLAY
	[ \${OVERLAY} == y ] || exit 1
fi
EOF
	fi
	cat <<EOF
if [ -d \${DIR} ] ; then
	echo "Directory \${DIR} exists. Are you sure you want to use this? (y/n) "
	read CONTINUE
	[ \${CONTINUE} == y ] || exit 1
else
	mkdir \${DIR}
fi
cd \${DIR}

EOF
}

jenkins_configs_method()
{
	cat <<EOF
export MANIFEST_REPO=${MANIFEST_REPO}
export MANIFEST_BRANCH=${MANIFEST_BRANCH}
export MANIFEST_FILENAME=${MANIFEST_FILENAME}
export TARGET_PRODUCT=${TARGET_PRODUCT}
export TARGET_SIMULATOR=false
export BUILD_TINY_ANDROID=${BUILD_TINY_ANDROID}
export CPUS=\`grep -c processor /proc/cpuinfo\`
EOF
	if [ -n "$TOOLCHAIN_URL" ] ; then
		cat <<EOF
export TOOLCHAIN_URL=${TOOLCHAIN_URL}
export TARGET_TOOLS_PREFIX=android-toolchain-eabi/bin/arm-linux-androideabi-

EOF
	else
		cat <<EOF
export TARGET_TOOLS_PREFIX=prebuilt/linux-x86/toolchain/arm-linux-androideabi-4.4.x/bin/arm-linux-androideabi-

EOF
	fi
}

git_configs_method()
{
	cat <<EOF
export BUILD_CONFIG_REPO=${BUILD_CONFIG_REPO}
export BUILD_CONFIG_BRANCH=${BUILD_CONFIG_BRANCH}
export BUILD_CONFIG_FILENAME=${BUILD_CONFIG_FILENAME}

git clone "\$BUILD_CONFIG_REPO" configs_repo
git --git-dir=configs_repo/.git checkout "\$BUILD_CONFIG_BRANCH"
CONFIGURATION=\$(cat configs_repo/"\$BUILD_CONFIG_FILENAME")
set -a
eval \$CONFIGURATION

EOF
}

sync_commands()
{
	if [ -n "$SOURCE_OVERLAY" ]; then
		CP_CMD="cp \$MANIFEST .repo/manifest.xml"
	else
		CP_CMD="curl -k ${PINNED_MANIFEST_URL}/pinned-manifest.xml > .repo/manifest.xml"
	fi
	if [ "$REPO_GROUPS" != "all,-notdefault,-eclipse" ]; then
		REPO_GROUPS_OPTION="-g $REPO_GROUPS"
	else
		REPO_GROUPS_OPTION=""
	fi
	cat <<EOF
# download the repo tool for android
curl "http://android.git.linaro.org/gitweb?p=tools/repo.git;a=blob_plain;f=repo;hb=refs/heads/stable" > repo
chmod +x repo

# download the android code
./repo init -u \${MANIFEST_REPO} -b \${MANIFEST_BRANCH} -m \${MANIFEST_FILENAME} ${REPO_MIRROR} $REPO_GROUPS_OPTION
if [ \${EXACT} -eq 1 ] ; then
	rm .repo/manifest.xml
	$CP_CMD
fi
# check for linaro private git repositories
PRI=\`grep -i "linaro-private" .repo/manifests/\${MANIFEST_FILENAME} | wc -l\`
if [ \${PRI} -gt 0 ] ; then
	if [ "\${ID}" == "default-bot" ] ; then
		echo "You must specify valid login/access-id to clone from linaro-private git repositories."
		echo "Press "y" to continue (which may result in incomplete build), OR"
		echo "Press "n" to enter login details, OR"
		echo "Press "h" for help."
		read NEXT
		if [ \${NEXT} == n ] ; then
			echo "Enter login/access-id:"
			read ID
		elif [ \${NEXT} == h ] ; then
			usage
		fi
	fi
	sed -i 's/\/\/.*-bot@/\/\/'"\${ID}"'@/' .repo/manifests/\${MANIFEST_FILENAME}
fi
./repo sync

EOF

	if [ -n "$TOOLCHAIN_URL" ] ; then
		cat <<EOF
# download the toolchain to build with
curl -k \${TOOLCHAIN_URL} > toolchain.tar.bz2
tar -jxf toolchain.tar.bz2
rm toolchain.tar.bz2
EOF
	fi

	if [ -n "$SOURCE_OVERLAY" ]; then
		cat <<EOF

# extract the vendor's source overlay
tar -x -a -f "\$SOURCE_OVERLAY" -C .
EOF
	fi
	echo
}

build_commands()
{
	cat <<EOF
# build the code
. build/envsetup.sh
make -j\${CPUS} boottarball systemtarball userdatatarball
EOF
}

{
	header
	if [ -n "$BUILD_CONFIG_REPO" ]; then
		git_configs_method
	else
		jenkins_configs_method
	fi
	sync_commands
	build_commands
} > linaro_android_build_cmds.sh
chmod +x linaro_android_build_cmds.sh