hook to limit push to only one branch at a time

Question

I’m trying to create a hook that blocks pushes to a remote repository if you are trying to push more than once branch.

Here’s the hook:

#!/bin/bash

HG_EXE="/opt/csw/bin/hg"
CHANGESETS=`${HG_EXE} log -r $1:tip --template '{node} '`

i=0
for changeset in ${CHANGESETS}
do
       BRANCH=`${HG_EXE} log -r ${changeset} --template '{branches}'`

       if [ "${BRANCH}" == "" ]
       then
              BRANCH="default"
       fi
       BRANCHES[$i]=${BRANCH}
       i=$i+1
done

items=${#BRANCHES[*]}
if [ $items -gt 1 ]
then
       i=0
       while [ "${BRANCHES[${i}+1]}" != "" ]
       do
              if [ "${BRANCHES[${i}]}" != "${BRANCHES[${i}+1]}" ]
              then
                     echo "ERROR: You are trying to push more than one branch, use     \"hg push -b [branch_name]\""
                     exit 1
              fi
       i=$i+1 
       done
fi

The problem: If I’ve committed on two branches:

changeset:   58:8d2bebe08dd9
user:        keshurj <Jay.Keshur@monitisegroup.com>
date:        Thu May 26 16:36:49 2011 +0100
summary:     commit on default

changeset:   59:43be74e39a44
branch:      branch1
tag:         tip
user:        keshurj <Jay.Keshur@monitisegroup.com>
date:        Thu May 26 16:40:25 2011 +0100
summary:     commit on branch1

and try to push using hg push –b branch1, the hook still sees ${HG_NODE} as 8d2bebe08dd9, which is on default.

Is there any way to ensure a push is done to only one branch at a time, via a remote hook?

Open to any and all suggestions ( re: this workflow :) )

Answer 1

turns out i was doing something silly....changeset 58 is the parent of changeset 59.

Thanks guys.