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word_count.sh
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word_count.sh
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#!/bin/bash
#
# This script traverses all commits of a git repository in the current directory
# and counts the number of words that are changed, i.e. added or deleted for all
# TeX files. The output contains a time-stamp (YYYY-MM-DD). Next, there are some
# counts, viz. the number of added, deleted, and total words.
#
# You can use `gnuplot`, for example, to create nice visualizations from the raw
# data. For this, it may be useful to specify the first column as a date column:
#
# set xdata time
# set timefmt "%Y-%m-%d"
#
# Following this, you may plot the desired information. Use 'branch' in order to
# control for which branch the commits are being enumerated.
today=`date +%F`
branch="master"
last_words=0
todays_words=0
daily_goal=500
#header
if [[ "$1" != "today" ]]; then
echo date added deleted words
fi
for commit in $(git rev-list --reverse $branch)
do
date=$(git show -s --format=%cd --date=short $commit)
if [[ $date == $today && $last_words -eq 0 ]]; then
last_words=$words
fi
added=$(git show -p --word-diff=porcelain $commit "*.tex" | grep -e '^+[^+]' | wc -w)
deleted=$(git show -p --word-diff=porcelain $commit "*.tex" | grep -e '^-[^-]' | wc -w)
words=$(($words+$added))
words=$(($words-$deleted))
if [[ "$1" != "today" ]]; then
echo $date $added $deleted $words
fi
done
if [[ "$1" = "today" ]]; then
todays_words=$(($words-$last_words))
echo "You have written $todays_words words today."
if [[ $todays_words -gt $daily_goal ]]; then
echo "Nice work, you have met your daily goal!"
else
echo "You need to write $(($daily_goal-$todays_words)) more words to meet your daily goal!"
fi
fi