#!/bin/sh

DEBUG=
SVN=
GIT=

function usage() {
    echo "Usage:"
    printf "  %s <platform_dir> <new_platform_dir>\n" "$0"
}

function error() {
    printf "ERROR: "
    printf "$@"
    usage
    exit 1
}

case "$1" in
    --debug) DEBUG="echo "; shift;;
    *) ;;
esac

OLD=$1
NEW=$2

[ -e "$OLD" ] || error "\"%s\" does not exists.\n" "$OLD"
[ -d "$OLD" ] || error "\"%s\" does not seem to be a directory.\n" "$OLD"
[ -e "$OLD/CMakeCache.txt" ] || error "\"%s\" does not seem to be a platform directory.\n" "$OLD"

if grep -q CGAL_REFERENCE_CACHE_DIR "$OLD/CMakeCache.txt"; then
    error "\"%s\" seems to be\n       the cache of a test platform directory in use in the testsuite, and\n       not the cache of a *reference* test platform.\n       Reason: the cache contains a variable CGAL_REFERENCE_CACHE_DIR.\n" "$OLD/CMakeCache.txt"
fi

[ -e "$NEW" ] && error "the destination directory already exists.\n"

if svn info >/dev/null 2>&1; then
  SVN=y
  $DEBUG svn cp "$OLD/" "$NEW" ||  error "Cannot \"svn cp\" from \"%s\" to \"%s\"\n" "$OLD" "$NEW"
elif git rev-parse 2>/dev/null; then
  GIT=y
  $DEBUG git mv "$OLD/" "$NEW" ||  error "Cannot \"git mv\" from \"%s\" to \"%s\"\n" "$OLD" "$NEW"
else
  $DEBUG rsync -aC "$OLD/" "$NEW" || error "Cannot copy from \"%s\" to \"%s\"\n" "$OLD" "$NEW"
fi
$DEBUG sed -i.bak -e "s,$OLD,$NEW,g" "$NEW"/CMakeCache.txt
[ -e "$NEW/setup" ] && sed -i.bak -e 's|$OLD|$NEW|g' "$NEW"/setup
if [ -n "$SVN" ]; then
  $DEBUG svn rm "$OLD"
else
  $DEBUG rm -rf "$OLD" || error "Cannot erase the original directory \"%s\"\n" "$OLD"
fi