tools/scripts/merge-forward

   1 #!/bin/bash
   2 set -e
   3
   4 RELPATH="$1"
   5 REMOTE="$2"
   6 MAINTBRANCH="$3"
   7 DEVBRANCH="$4"
   8 TMPBRANCH=$MAINTBRANCH-$DEVBRANCH-$(date "+%Y-%m-%d-%H-%M-%S")
   9
  10 if [ -z "$RELPATH" -o  -z "$REMOTE" -o  -z "$MAINTBRANCH" -o  -z "$DEVBRANCH" ] ; then
  11   PROG=$(basename $0)
  12   echo "Merge any changes from the maintenance-branch into the development-branch."
  13   echo "If there are no conflicts, then push the changes."
  14   echo ""
  15   echo "Usage: $PROG <relpath> <remote> <maintenance-branch> <development-branch>"
  16   echo ""
  17   echo "Example: $PROG drupal upstream 7.x-4.3 7.x-master"
  18   exit 1
  19 fi
  20
  21 pushd "$RELPATH" >> /dev/null
  22   ## OS X: mktemp requires "-t prefix" argument
  23   ## GNU: mktemp accepts optional -t pattern" argument
  24   ## The string "merge-forward-XXXXXX" works as a prefix or pattern
  25   TMPFILE=$(mktemp -t merge-forward-XXXXXX)
  26
  27   set -x
  28   git fetch $REMOTE
  29   git checkout -b $TMPBRANCH $REMOTE/$DEVBRANCH
  30   git merge $REMOTE/$MAINTBRANCH | tee $TMPFILE
  31   set +x
  32
  33   if grep -q CONFLICT "$TMPFILE" ; then
  34     echo ""
  35     echo "==> Conflicted merge. Please resolve conflicts and then push with:"
  36     echo ""
  37     echo "git push $REMOTE $TMPBRANCH:$DEVBRANCH"
  38   elif grep -q "Already up-to-date." "$TMPFILE" ; then
  39     echo ""
  40     echo "==> No update needed"
  41     echo ""
  42   else
  43     echo ""
  44     echo "==> Clean merge; proceeding with push"
  45     echo ""
  46     set -x
  47     git push $REMOTE $TMPBRANCH:$DEVBRANCH
  48     git fetch $REMOTE
  49     git checkout $REMOTE/$DEVBRANCH
  50     git branch -d $TMPBRANCH
  51     set +x
  52   fi
  53
  54   /bin/rm -f "$TMPFILE"
  55 popd  >> /dev/null