git.scottworley.com Git - keystroke-timestamps/blob - fill-in.sh

   1 #!/usr/bin/env bash
   2
   3 set -euo pipefail
   4
   5 # Add zeros to epoch-timestamped streams.  For example, with interval=100:
   6 #
   7 # Input:
   8 # 10000400 3
   9 # 10000500 4
  10 # 10000800 2
  11 #
  12 # Output:
  13 # 10000400 3
  14 # 10000500 4
  15 # 10000600 0
  16 # 10000700 0
  17 # 10000800 2
  18 #
  19 # This is helpful for feeding such streams to gnuplot.
  20
  21 interval=${1:-3600}
  22 zero=${2:-0}
  23
  24 read -r prevt rest
  25 echo "$prevt $rest"
  26 while read -r t rest;do
  27   while (( t - prevt > interval ));do
  28     prevt=$(( prevt + interval))
  29     echo "$prevt $zero"
  30   done
  31   echo "$t $rest"
  32   prevt=$t
  33 done