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#!/bin/sh
#
# This script parses the commit messages between the last 2 git tags
# if the last commit contains the word "Release", otherwise it shows
# all the changes between the last tag and HEAD.
#
# Commits are grouped in different sections specified in the commit
# message with the middle-dot character '·'. The section names are
# arbitrary and we may be careful to use them properly but having
# in mind that this may change.
#
# Commits without any middle·dot in the message are discarted and
# displayed in the "to review" section.
#
# The tool prints Markdown, no plans to support other formats.
#
# Usage: sys/release-notes.sh 4.5.1 # from HEAD to 4.5.1
# $ sys/release-notes.sh 4.5.1 -v # same as above but include untagged commits
# $ sys/release-notes.sh 4.5.0 4.5.1 # from 4.5.0 to 4.5.1
#
# --pancake
if [ -n "`git log -n 1 | grep Release`" ]; then
VERS=`git tag --sort=committerdate | grep -v conti | tail -n 1`
PREV=`git tag --sort=committerdate | grep -v conti | tail -n 2 | head -n1`
else
VERS=HEAD
PREV=`git tag --sort=committerdate | grep -v conti | tail -n 1`
fi
[ -n "$1" ] && PREV="$1"
[ -n "$2" ] && VERS="$2"
git log ${PREV}..${VERS} > .l
# When HEAD contains a tag do this magic
if [ ! -s .l ]; then
VERS=$PREV
PREV=`git tag --sort=committerdate | grep -v conti | tail -n 2 | head -n1`
git log ${PREV}..${VERS} > .l
fi
grep ^Author .l | cut -d : -f 2- | sed -e 's,radare,pancake,' | sort -u > .A
ABI0="`git show ${PREV}:libr/include/r_lib.h | grep 'R2_ABIVERSION ' | cut -d ' ' -f 3`"
ABI1="`git grep 'R2_ABIVERSION ' libr/include/r_lib.h|cut -d ' ' -f 3`"
CODENAME="`git log | grep -i 'Release' | head -n 1 | cut -d - -f 2- | cut -d ' ' -f 3-`"
ABIDIFF=$(($ABI1-$ABI0))
echo "## Release Notes"
echo
echo "Codename: ${CODENAME}"
echo "Version: ${VERS}"
echo "Previous: ${PREV}"
echo "AbiDiff: ${ABI0}-${ABI1} (${ABIDIFF})"
printf "Commits: "
grep ^commit .l | wc -l | xargs echo
echo "Contributors: `wc -l .A | awk '{print $1}'`"
echo
echo "\`\`\`sh"
echo "curl -Ls https://github.com/radareorg/radare2/releases/download/${VERS}/radare2-${VERS}.tar.xz | tar xJv"
echo "radare2-${VERS}/sys/install.sh"
echo "\`\`\`"
echo
echo "## Highlights"
echo "<details><summary>More details</summary><p>"
echo
echo "## Authors"
echo
cat .A | perl -ne '/([^<]+)(.*)$/;$a=$1;$b=$2;$a=~s/^\s+|\s+$//g;$b=~s/[<>\s]//g;print "[$a](mailto:$b) "'
echo
echo
echo "## Changes"
echo
cat .l | grep -v ^commit | grep -v ^Author | grep -v ^Date > .x
cat .x | grep '##' | perl -ne '/##([^ ]*)/; if ($1) {print "$1\n";}' | sort -u > .y
for a in `cat .y` ; do
echo "**$a**"
echo
cat .x | grep "##$a" | sed -e 's/##.*//g' | perl -ne '{ s/^\s+//; print "* $_"; }'
echo
done
if [ -n "`echo $@ | grep -- -v`" ]; then
echo "## To Review"
cat .x | grep -v '##' | sed -e 's,^ *,,g' | grep -v "^$" | \
perl -ne 'if (/^\*/) { print "$_"; } else { print "* $_";}'
echo
fi
rm -f .x .y .l .A
echo '</p></details>'
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