+# run if not running.
+#
+# Note: this does not work with shell scripts as they are normally
+# invoked, because the ps output has the interpreter at the start.
+# A workaround is to invoke the command in that format, or we could
+# do various other workarounds.
+#
+# background, this relies on how ps converts newlines in arguments to spaces, and
+# assumes we won't be searching for a command with spaces in its arguments
+rinr() {
+ if ps h -o args -C "${1##*/}" | grep -Fxqv "$*" &>/dev/null || [[ $? == 141 ]]; then
+ "$@"
+ fi
+}
+# variation of above: run or wait if running
+rowir() {
+ local pid
+ pid=$(ps h -o 'pid,args' -C "${1##*/}" | sed -r 's/^[[:space:]]*([0-9]+)[[:space:]](.*)/\1\n\2/' | grep -B1 -Fx "$*" | head -n1 ||: )
+ if [[ $pid ]]; then
+ # https://unix.stackexchange.com/questions/427115/listen-for-exit-of-process-given-pid
+ tail --pid="$pid" -f /dev/null
+ else
+ "$@"
+ fi
+}
+
+mpvrpc-loadfile() {
+ local path nextpath cachedir finalpath nextpath count
+ cachedir=$HOME/.iank-music-cache
+ path="$1"
+ nextpath="$2"
+
+ # note: logic duplicated in beetpull
+ local remote_p=true
+ if [[ $HOSTNAME == kd ]]; then
+ remote_p=false
+ fi
+
+ if $remote_p; then
+ finalpath="$cachedir${path#/i/m}"
+ rowir rsync --partial -a --inplace --mkpath "b8.nz:$path" "$finalpath"
+ finalnextpath="$cachedir${nextpath#/i/m}"
+ count=$(pgrep -a -f "^rsync --partial -a --inplace --mkpath $cachdir" || [[ $? == 1 ]] )
+ # allow us to start 2 rsyncs in the background
+ if [[ $count == [01] ]]; then
+ rinr rsync --partial -a --inplace --mkpath "b8.nz:$nextpath" "$finalnextpath" &
+ fi
+ else
+ finalpath="$path"
+ fi
+ mpvrpc '{ "command": ["loadfile", "'"$finalpath"'"] }'
+}
+