43 lines
1.1 KiB
Bash
Executable File
43 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
|
|
# Copyright (c) 2010 The Chromium Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
about="Given a grep expression, creates a graph of occurrences of that
|
|
expression in the recent history of the tree.
|
|
|
|
Prerequisites: git and GNU R (apt-get install r-base).
|
|
"
|
|
|
|
set -e
|
|
|
|
target="$1"
|
|
|
|
if [ -z $target ]; then
|
|
echo "usage: $0 <grep-compatible expression>"
|
|
echo
|
|
echo "$about"
|
|
exit 1
|
|
fi
|
|
|
|
datafile=$(mktemp -t tmp.XXXXXXXXXX)
|
|
trap "rm -f $datafile" EXIT
|
|
|
|
echo 'ago count' > $datafile
|
|
for ago in {90..0}; do
|
|
commit=$(git rev-list -1 --until="$ago days ago" origin/trunk)
|
|
git checkout -q -f $commit
|
|
count=$(git grep -E "$target" -- '*.cc' '*.h' '*.m' '*.mm' | wc -l)
|
|
echo "-$ago $count" >> $datafile
|
|
echo -n '.'
|
|
done
|
|
|
|
R CMD BATCH <(cat <<EOF
|
|
data = read.delim("$datafile", sep=' ')
|
|
png(width=600, height=300)
|
|
plot(count ~ ago, type="l", main="$target", xlab='days ago', data=data)
|
|
EOF
|
|
) /dev/null
|
|
|
|
echo done. # Primarily to add a newline after all the dots.
|