#!/bin/bash
############################################################################
##
## Copyright (C) 2017 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
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## This file is part of the Boot to Qt meta layer.
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## $QT_BEGIN_LICENSE:GPL$
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## Alternatively, this file may be used under the terms of the GNU
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## the Free Software Foundation and appearing in the file LICENSE.GPL3
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############################################################################

set -e

if [ $# -lt 1 ]; then
    echo "Usage: $0 <sstate-cache-dir(s)>"
    echo "Remove all old files from <sstate-cache-dir(s)>"
    exit 1
fi

DAYS_TO_KEEP=7
NOW=$(date +%s)

for cachedir in $@; do

  if [ ! -d $cachedir ]; then
    echo "$cachedir: No such directory"
    continue
  fi

  # find the most recently modified file's timestamp
  LATEST=$(find $cachedir -type f -printf '%T@\n' | sort -n | tail -1 | cut -f 1 -d'.')
  # calculate days
  TIMEOUT=$(( ($NOW - $LATEST) / 3600 / 24 + $DAYS_TO_KEEP ))
  # delete all files older
  find ${cachedir} -type f -atime +${TIMEOUT} -delete

done