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#!/usr/bin/env bash
#=============================================================================
# CMake - Cross Platform Makefile Generator
# Copyright 2000-2011 Kitware, Inc., Insight Software Consortium
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================

die() {
  echo 'pre-commit hook failure' 1>&2
  echo '-----------------------' 1>&2
  echo '' 1>&2
  echo "$@" 1>&2
  exit 1
}

if test -z "$HOOKS_ALLOW_KWSYS"; then
  # Disallow changes to KWSys
  files=$(git diff-index --name-only --cached HEAD -- Source/kwsys) &&
  if test -n "$files"; then
    die 'Changes to KWSys files

'"$(echo "$files" | sed 's/^/  /')"'

should not be made directly in CMake.  KWSys is kept in its own Git
repository and shared by several projects.  Please visit

  http://public.kitware.com/Wiki/KWSys/Git

to contribute changes directly to KWSys.  Run

  git reset HEAD -- Source/kwsys

to unstage these changes.  Alternatively, set environment variable

  HOOKS_ALLOW_KWSYS=1

to disable this check and commit the changes locally.'
  fi
fi