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@nmandery
Last active November 29, 2016 12:10
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generate a changelog from git tags
#!/bin/bash
# generate a changelog from git tags
TAGLIST=`git tag | grep -E '^v[0-9]+' | xargs -I@ git log --format=format:"%ai @%n" -1 @ | sort -r | awk '{print $4}'`
LAST_IN_LIST=HEAD
echo "Changelog"
echo "---------"
echo ""
echo "Auto-generated from git commits."
echo ""
function git_log {
START="$1"
END="$2"
git --no-pager log --no-merges \
--format="format: * %s [%h]" "${START}..${END}" | fold -w 80 -s | sed -re 's.^([^ \t]). \1.'
}
for TAG in $TAGLIST; do
echo "$LAST_IN_LIST ($(git log -1 --format=%ai "$LAST_IN_LIST"))"
git_log "$TAG" "$LAST_IN_LIST"
LAST_IN_LIST=$TAG
echo ""
echo ""
done
# changes since first commit
FIRST_COMMIT=`git rev-list --max-parents=0 HEAD`
echo "$LAST_IN_LIST"
git_log "$FIRST_COMMIT" "$LAST_IN_LIST"
git --no-pager log --format="format: * %s [%h]" "${FIRST_COMMIT}..${LAST_IN_LIST}"
echo ""
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