growth.sh

   1 #!/bin/bash
   2
   3 if [ $# -lt 1 ]; then
   4         echo "Usage: $0 <output image>.png [geometry]" >&2
   5         exit 1;
   6 fi
   7
   8 TMP=$1
   9 output="$1.png"
  10 echo "Outputting to image $output, tmp = $TMP"
  11
  12 x=600
  13 y=400
  14
  15 if [ $# -gt 1 ]; then
  16         x=$2;
  17         y=$3;
  18 fi
  19
  20 git log -C --numstat --reverse --pretty=oneline | awk '
  21         function print_commit() {
  22                 print id" "ins - del;
  23         }
  24         BEGIN { id=""; ins=0; del=0; }
  25         /^[0-9]+[\t ]+[0-9]+/ {
  26                 ins = ins + $1;
  27                 del = del + $2;
  28                 next;
  29         }
  30         /^[0-9a-z]+/ {
  31                 if( NR != 1 ) print_commit();
  32                 id = $1;
  33         }
  34         END{ print_commit(); }
  35         ' > $TMP
  36
  37 gnuplot << _EOF_
  38         set terminal png nocrop medium size $x,$y
  39         set output '$output'
  40         plot "$TMP" using 2
  41 _EOF_
  42
  43 rm $TMP