#!/bin/sh

#

# Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code 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

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

to_stderr() {

    echo "$@" >&2

}

error() {

    to_stderr "ERROR: $1"

    exit ${2:-126}

}

warning() {

    to_stderr "WARNING: $1"

}

version_field() {

  # rev is typically omitted for minor and major releases

  field=`echo ${1}.0 | cut -f ${2} -d .`

  if expr 1 + $field >/dev/null 2> /dev/null; then

    echo $field

  else

    echo -1

  fi

}

# Version check

# required

reqdmajor=1

reqdminor=4

reqdrev=0

# requested

rqstmajor=2

rqstminor=6

rqstrev=3

# installed

hgwhere="`command -v hg`"

if [ "x$hgwhere" = "x" ]; then

  error "Could not locate Mercurial command"

fi

hgversion="`hg --version 2> /dev/null | sed -n -e 's@^Mercurial Distributed SCM (version \([^+]*\).*)\$@\1@p'`"

if [ "x${hgversion}" = "x" ] ; then

  error "Could not determine Mercurial version of $hgwhere"

fi

hgmajor="`version_field $hgversion 1`"

hgminor="`version_field $hgversion 2`"

hgrev="`version_field $hgversion 3`"

if [ $hgmajor -eq -1 -o $hgminor -eq -1 -o $hgrev -eq -1 ] ; then

  error "Could not determine Mercurial version of $hgwhere from \"$hgversion\""

fi

# Require

if [ $hgmajor -lt $reqdmajor -o \( $hgmajor -eq $reqdmajor -a $hgminor -lt $reqdminor \) -o \( $hgmajor -eq $reqdmajor -a $hgminor -eq $reqdminor -a $hgrev -lt $reqdrev \) ] ; then

  error "Mercurial version $reqdmajor.$reqdminor.$reqdrev or later is required. $hgwhere is version $hgversion"

fi

# Request

if [ $hgmajor -lt $rqstmajor -o \( $hgmajor -eq $rqstmajor -a $hgminor -lt $rqstminor \) -o \( $hgmajor -eq $rqstmajor -a $hgminor -eq $rqstminor -a $hgrev -lt $rqstrev \) ] ; then

  warning "Mercurial version $rqstmajor.$rqstminor.$rqstrev or later is recommended. $hgwhere is version $hgversion"

fi

# Get clones of all absent nested repositories (harmless if already exist)

sh ./common/bin/hgforest.sh clone "$@" || exit $?

# Update all existing repositories to the latest sources

sh ./common/bin/hgforest.sh pull -u