watcher/watch

56 lines
1.1 KiB
Bash
Executable File

#!/usr/bin/env zsh
error(){print -- $* >&2; exit 1}
(($#<2)) && error "usage: ${0:t} [once] cmd dirs..."
ONCE=0
[[ $1 = "once" ]] && { ONCE=1; shift }
(($#<2)) && error "usage: ${0:t} [once] cmd dirs..."
cmd="$1"
shift
typeset -a listDir
listDir=( $@ )
isRecentlyModified() {
local fic="$1"
local mtime=0
currenttime=$(date +"%s")
case $(uname) in
Darwin) mtime=$(stat -f %m $fic);;
Linux) mtime=$(stat --printf %Y $fic);;
*) mtime=$(stat --printf %Y $fic);;
esac
(( $currenttime - $mtime < 2 ))
}
checkfile=".last_watched"
((ONCE == 0)) && \
[[ -e $checkfile ]] && \
isRecentlyModified $checkfile && \
error "Wait at least 2 second if you killed the process"
execIfChanged() {
isRecentlyModified $1 && { print -- "$cmd $1"; eval "$cmd $1"}
}
typeset -A listFic
while true; do
listFic=()
for d in $listDir; do
if [[ -d $d ]]; then
for fic in $d/**/*(.); do
execIfChanged $fic
done
else
execIfChanged $d
fi
done
((ONCE == 1)) && break
touch $checkfile
sleep 2
done