Count occurences of CSS class names

find-styles.awk

# this script counts the occurrences of different class names in input lines
# where classes are specified using the HTML class attribute.
# It then prints the top 10 most frequently occurring class names and their counts.


BEGIN {
  FS=" class="
}

{
  for(i=2; i<=NF; i++) {
    classes=$i
    gsub(/"/,"",classes)
    gsub("/>","",classes) #" fix code highlighting
    classcounts[classes]++
  }
}

END {
  n=asorti(classcounts,sortedcounts)

  for(i=n; i>=n-10; i--) {
    print sortedcounts[i], classcounts[sortedcounts[i]]
  }
}