[WIP] initial setup-subtree.sh import

Author: Islam Amer

client/setup-subtree.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+# Copyright (C) 2014 Jolla Ltd.
+# Contact: Islam Amer <islama.amer@jollamobile.com>
+# All rights reserved.
+# 
+# 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 2
+# 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+# Convenience script for initial setup of a subtree based packaging repository
+# Dependencies: git subtree
+#set -x
+set -e
+
+usage () {
+
+  echo "$0 <tarball> <upstream reference (tag or branch)> <subtree prefix>"
+  echo "$0 <submodule clone url> <upstream reference (tag or branch)>"
+  exit 1
+
+}
+
+test $# -ge 2 || usage
+test -d .git || ( echo "Current working directory is not a git repository" ; exit 1 )
+
+git commit --allow-empty -m "initial empty commit"
+
+if test -f "$1" ; then
+  git checkout -b upstream || git checkout upstream
+  tar -xvf $1 --strip-components=1
+  git add -A
+  git commit -a -m "import from upstream tarball $(basename $1)"
+  if test -n "$2"; then
+    git tag upstream/$2
+  fi
+  if test -x $(which pristine-tar); then
+    pristine-tar commit $1
+  fi
+  git checkout master
+  git clean -fdx
+  if test -n "$3"; then
+    git subtree add --squash --prefix=$3 upstream
+  else
+    echo "git subtree add --squash --prefix=<name> upstream"
+  fi
+  
+else
+
+  git submodule add $1 upstream
+  pushd upstream
+    git checkout -B reference-branch $2
+  popd
+  git commit -a -m "add upstream submodule"
+
+  git remote add -f --no-tags upstream upstream
+  git branch reference-branch upstream/reference-branch
+
+  git subtree add --squash --prefix=$(basename $1 .git) upstream reference-branch
+
+fi
+
+mkdir -p rpm