#!/usr/bin/awk -f
#
# Compute some simple statistics from a ChangeLog file. Output has several
# columns:
#
#   1) number of changelog entries
#   2) total lines in changelog entries
#   3) average lines per entry
#   4) username
#
# Output is not sorted. Use "sort -n" to sort.
#
# Lars Wirzenius

/^[a-zA-Z0-9]/ {
    match($NF, /<.*@/)
    who = substr($NF, RSTART+1, RLENGTH-2)
    if (who == "") who = $NF
    entries[who]++
    next
}

/[^ 	]/ { lines[who]++ }

END {
    for (who in entries)
	printf "%4d %4d %.1f %s\n", entries[who], lines[who], 
	    	    lines[who]/entries[who], who
}