tcwg-upstream2gerrit.sh: Proof-of-concept script to test upstream patches

Change-Id: I158f1927126c8e9bac22a7ec5956bfa956989cd4

1 files changed, 105 insertions, 0 deletions

diff --git a/tcwg-upstream2gerrit.sh b/tcwg-upstream2gerrit.sh
new file mode 100755
index 00000000..88899321
--- /dev/null
+++ b/tcwg-upstream2gerrit.sh
@@ -0,0 +1,105 @@
+#!/bin/bash
+
+set -ex
+
+# Make shellcheck happy and workaround Jenkins not defining variables
+# for empty arguments.
+branch="${branch:-master}"
+patches="${patches:-last}"
+project="${project:-gcc}"
+squash="${squash:-false}"
+
+# Jenkins doesn't define variables when parameter value is empty (like cflags),
+# so enable "set -u" only after above binding of variables.
+set -u
+
+. jenkins-helpers.sh
+
+rm -f pwclient
+wget http://people.linaro.org/~maxim.kuvyrkov/pwclient/pwclient
+
+pwc="$(pwd)/pwclient"
+chmod +x "$pwc"
+sed -i -e "s#~/.pwclientrc#$(pwd)/pwclientrc#g" "$pwc"
+cat > pwclientrc <<EOF
+[options]
+default=$project
+
+[$project]
+url= https://patches-$project.linaro.org/xmlrpc/
+EOF
+
+last_id=$($pwc list -N 1 -f %{id})
+if [ "$last_id" = "" ]; then
+    echo "ERROR: Cannot fetch last patch id."
+    exit 1
+fi
+
+patches=$(echo "$patches" | sed -e "s/last/$last_id/g")
+
+clone_or_update_repo $project refs/heads/$branch https://git-us.linaro.org/toolchain/$project
+
+cd $project
+cat > .gitreview <<EOF
+[gerrit]
+host=review.linaro.org
+port=29418
+project=toolchain/$project
+EOF
+git review -s
+rm .gitreview
+
+case "$project" in
+    "gcc")
+	# Attempt to apply patches to nested gcc/ directory if top-level
+	# fails.
+	try_dirs=". gcc"
+	;;
+    *) try_dirs="." ;;
+esac
+
+patch_file=$(mktemp)
+trap "rm -f $patch_file" EXIT
+
+count="0"
+for patch in $patches; do
+    download_file=$($pwc get -p $project $patch | sed -e "s/Saved patch to //")
+    mv $download_file $patch_file
+
+    res=0
+    git reset --hard
+    git clean -df
+    if grep -q "diff --git" $patch_file; then
+	git am $patch_file || res=$?
+	if [ "$res" = "0" ]; then
+	    git commit --amend --reset-author -C HEAD
+	fi
+    else
+	for dir in $try_dirs; do
+	    pushd $dir
+	    git reset --hard
+	    git clean -df
+	    patch -f -p0 < $patch_file || res=$?
+	    if [ "$res" = "0" ]; then
+		git add .
+		git reset $patch_file
+		git commit -m "Patch #$patch"
+	    fi
+	    popd
+	    if [ "$res" = "0" ]; then
+		break
+	    fi
+	done
+    fi
+    if [ "$res" != "0" ]; then
+	echo "ERROR: Cannot apply patch $patch"
+	exit 1
+    fi
+    count=$(($count+1))
+done
+
+if $squash; then
+    git reset --soft HEAD~$count
+    git commit -m "Patches: $patches"
+fi
+git review -y "$branch"