Generates a svg pallete based on a textual list of colours

gp.awk

#!/usr/bin/awk -f
# gp.awk: generates a svg rendering of a textual pallete list
BEGIN {
  if(!h) h=1080
  if(!w) w=1920
  c=0
  print "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
  printf("<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" height=\"%d\" width=\"%d\">\n", h, w)
}
{
  a[c]=$0
  c++
}
END {
  stop=w/c
  cur=0.0
  for(i in a) {
    printf("<rect x=\"%g\" y=\"0\" height=\"%d\" width=\"%g\" style=\"fill:%s\" />\n",cur,h,stop,a[i])
    cur+=stop
  }
  print "</svg>"
}