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#!/bin/bash
# Copyright 2009 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS-IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
CP_CMD="cp -R -u"
if [ `uname` == "Darwin" ]; then
CP_CMD="/bin/cp -R -n"
fi
function cacheonfiles {
NAME=$1; FILES=$2; FUNC=$3; NOCOPY=1;
if [ -z "$4" ]; then
NOCOPY=0
fi
REBUILD=0
BPATH=buildcache/$NAME
FILETEST=$BPATH/t
if [ ! -f $FILETEST ]; then
REBUILD=1
else
for a in $FILES; do
if [ $FILETEST -ot $a ]; then
echo $a has changed, rebuilding $NAME
REBUILD=1
fi
done
fi
if [ $REBUILD -eq 1 ]; then
if [ -d $BPATH ]; then
rm -rf $BPATH
fi
mkdir -p $BPATH
$FUNC $BPATH
pushd $BPATH >> /dev/null
touch t
popd >> /dev/null
else
echo using cached $NAME...
fi
if [ $NOCOPY -ne 1 ]; then
for a in $BPATH/*; do
if [ -d $a ]; then
$CP_CMD $a build/
elif [ -f $a ]; then
cp $a build/
else
echo unknown file type $a
exit 1
fi
done
fi
}
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