add makerepo.sh script to help creating patches

Makes a git repository out of the source dir NetworkManager-0.9.9.0/

makerepo.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+set -vx
+
+die() {
+	echo "$@" >&2
+	exit 1
+}
+
+srcdir="$(dirname "$(readlink -f "$0")")"
+
+(test -f $srcdir/NetworkManager.spec \
+  && test -f $srcdir/sources) || {
+    echo -n "**Error**: Directory "\`$srcdir\'" does not look like the NM pkg dir"
+    exit 1
+}
+
+# generate the clean dir
+fedpkg prep || die "error while \`fedpkg prep\`"
+
+pushd NetworkManager-0.9.9.0
+    git init .
+    git remote add origin git://anongit.freedesktop.org/NetworkManager/NetworkManager
+    git commit --allow-empty -m '*** empty initial commit'  # useful, to rebase the following commit
+    git add -f -A .
+    git commit -m '*** add all'
+    cat <<EOF > .gitignore
+EOF
+    git rm --cached -r .
+    git add .
+    git commit -m "*** clean state (ignored files removed)"
+
+    REVERT_COUNT="$(echo "${1-1}" | sed -n 's/^\([0-9]\+\)$/\1/p' | head -n1)"
+    if [[ "$REVERT_COUNT" != "" ]]; then
+        echo "revert the last $REVERT_COUNT commits"
+        PATCH_LIST="$(sed -n 's/^Patch\([0-9]\+\): \+\(.*\)$/\1 \2/p' ../NetworkManager.spec | sort -n | tail -n $REVERT_COUNT)"
+        echo "$PATCH_LIST"
+        # revert and last patches...
+        for i in $(seq "$REVERT_COUNT" -1 1); do
+            LAST_PATCH_N=$(echo "$PATCH_LIST" | sed -n "$i"'s/^\([0-9]\+\) \+.*$/\1/p')
+            LAST_PATCH=$(  echo "$PATCH_LIST" | sed -n "$i"'s/^\([0-9]\+\) \+\(.*\)$/\2/p')
+            echo "revert Patch$LAST_PATCH_N \"$LAST_PATCH\"..."
+            patch -R -p1 < "../$LAST_PATCH" || die "error reverting Patch$LAST_PATCH_N $LAST_PATCH"
+            git add .
+            git commit --allow-empty -a -m "<< revert Patch$LAST_PATCH_N \"$LAST_PATCH\""
+        done
+        BASECOMMIT=`git rev-parse HEAD`
+        for i in $(seq 1 "$REVERT_COUNT"); do
+            LAST_PATCH_N=$(echo "$PATCH_LIST" | sed -n "$i"'s/^\([0-9]\+\) \+.*$/\1/p')
+            LAST_PATCH=$(  echo "$PATCH_LIST" | sed -n "$i"'s/^\([0-9]\+\) \+\(.*\)$/\2/p')
+            echo "reapply Patch$LAST_PATCH_N \"$LAST_PATCH\"..."
+            # first try git-am to preserve the commit message, otherwise just revert the last commit
+            git am "../$LAST_PATCH" || (
+                git revert --no-edit $BASECOMMIT~$((i-1))
+                COMMIT_MSG="$(git log -n1 --format='%s' $BASECOMMIT~$((i-1)) | sed 's/<< revert \(Patch.*"\)$/>> reapply \1/')"
+                git commit --amend -m "$COMMIT_MSG"
+            )
+
+            # The tree to the version before should be identical. Just to be sure, reset it.
+            git reset $BASECOMMIT~$((i)) -- .
+            EDITOR=true git commit --amend --no-edit
+            git reset --hard HEAD
+        done
+    fi
+popd
+
+