ref: c24ede465e797fca71bf1acb4594ae55e4310ce2
dir: /bin/fltr_cache.rc/
#!/usr/bin/env rc fn fltr_cache { a=() tmpf=() proc=$1 shift if(~ $#* 0) { tmpf=/tmp/fmttmp.$pid f=$tmpf score=`{{tee $tmpf || exit 1} | sha1sum} } if not { f=$1 if(~ $f */) { score=`{du -an $f | sha1sum || exit 1} # XXX using -n(bytes) instead of -t(lastmod) because sitemap proc touches files in tree. a=$f f=/dev/null } if not { score=`{sha1sum $f || exit 1} score=$score(1) } } cachedir=/tmp/fltr_cache/$score mkdir -p $cachedir >[2]/dev/null if(test -s $cachedir/$proc) cat $cachedir/$proc if not if($proc $a < $f | tee $cachedir/$pid) mv $cachedir/$pid $cachedir/$proc rm $tmpf $cachedir/$pid >[2]/dev/null & }