Infrastructure to generate ports growth graph similar to graph

at http://people.freebsd.org/~asami/papers/growth.gif. Unfortunatelly
it's quite out of date, so having own (more up-to-date) version is
good idea.

Submitted by:   Dan Nelson <dnelson@allantgroup.com>
PR:             docs/37432

tools/portsgrowth/getinfo.sh

@@ -0,0 +1,25 @@
+#! /bin/sh -e
+
+# Get a linecount for all the revisions listed in 'cvs log' and append
+# to our current list.  This lets us keep info for revisions that have
+# been axed from the repository.
+cvs log /usr/ports/INDEX | 
+sed -ne "s/^date: \([^;]*\);.*$/\1/p" |
+while read date ; do
+ echo $date
+ cvs update -D "$date" /usr/ports/INDEX
+ echo $date $(wc -l < /usr/ports/INDEX) >> ports.log
+done 
+# Put INDEX back the way we found it.
+cvs update -A /usr/ports/INDEX
+
+# Remove dupes.
+sort -u ports.log > ports.log1
+mv ports.log1 ports.log
+
+# Generate graph.
+gnuplot ports.plt
+
+# Interlace.
+pngtopnm ports.png | pnmtopng -i > ports.png1
+mv ports.png1 ports.png

tools/portsgrowth/ports.log

@@ -0,0 +1,359 @@
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tools/portsgrowth/ports.plt

@@ -0,0 +1,15 @@
+# $FreeBSD$
+set terminal png color
+set output "ports.png"
+set ylabel "Number of ports"
+set timefmt "%Y/%m/%d %H:%M:%S"
+set format x "%Y"
+set xdata time
+set grid
+# Uncomment to make ranges match 
+#  http://people.freebsd.org/~asami/papers/growth.gif
+# set xrange ["1995/01":"2000/11"]
+# set yrange [0:4000]
+set multiplot
+plot "ports.log" using 1:3 notitle with points
+plot "ports.log" using 1:3 smooth bezier notitle with lines