feat(bash): execution time

src/init/omp.bash

@@ -1,9 +1,26 @@
 export POSH_THEME=::CONFIG::
 
+TIMER_START="/tmp/${USER}.start.$$"
+
+PS0='$(::OMP:: --millis > $TIMER_START)'
+
 function _update_ps1() {
-    PS1="$(::OMP:: --config $POSH_THEME --error $?)"
+    omp_elapsed=-1
+    if [[ -f $TIMER_START ]]; then
+        omp_now=$(::OMP:: --millis)
+        omp_start_time=$(cat "$TIMER_START")
+        omp_elapsed=$(($omp_now-$omp_start_time))
+        rm $TIMER_START
+    fi
+    PS1="$(::OMP:: --config $POSH_THEME --error $? --execution-time $omp_elapsed)"
 }
 
 if [ "$TERM" != "linux" ] && [ -x "$(command -v ::OMP::)" ]; then
     PROMPT_COMMAND="_update_ps1; $PROMPT_COMMAND"
 fi
+
+function runonexit() {
+  rm $TIMER_START
+}
+
+trap runonexit EXIT