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#!/usr/bin/env bash
set -euo pipefail
if [ -z "${1-}" ]; then
echo "Usage: $0 [revision]"
echo "Script will print thanks for all contributors since [revision]."
exit 1
fi
# from https://stackoverflow.com/a/17841619/4739163
function join_by { local d=${1-} f=${2-}; if shift 2; then printf %s "$f" "${@/#/$d}"; fi; }
TEMPDIR=$(mktemp -d)
TO_EXCLUDE="$(dirname "$0")/exclude_contributors.txt"
LAST_REV=$1
WE_CREDIT=(
# Name of the author.
%an
# Name of the committer.
%cn
# Anybody in Reported-by. (These are case-insensitive, don't worry.)
"%(trailers:valueonly=true,key=Reported-by)"
# Anybody in Co-Authored-By.
"%(trailers:valueonly=true,key=Co-Authored-by)"
# Anybody in Thanks.
"%(trailers:valueonly=true,key=Thanks)"
# Anybody in Suggested-by
"%(trailers:valueonly=true,key=Suggested-by)"
)
PRETTY=$(join_by "%n" "${WE_CREDIT[@]}")
trap 'rm -rf "$TEMPDIR"' 0
echo "[*] Finding contributors since $LAST_REV..."
git log --pretty="$PRETTY" HEAD "^$LAST_REV" |
# Remove empty lines
grep . |
# Remove email addrs
sed 's/ *<[^>]*>$//' |
sort |
uniq > "$TEMPDIR/contributors.txt"
echo "[*] Found $(wc -l < "$TEMPDIR/contributors.txt") contributors!"
echo "[*] Removing contributors listed in $TO_EXCLUDE..."
comm -13 "$TO_EXCLUDE" "$TEMPDIR/contributors.txt" |
sed 's/^[[:space:]]*\|[[:space:]]*$//g' > "$TEMPDIR/final.txt"
echo "[*] Ended up with $(wc -l < "$TEMPDIR/final.txt") contributors remaining."
readarray -t CONTRIBUTORS < "$TEMPDIR/final.txt"
OUTPUT=$(join_by ", " "${CONTRIBUTORS[@]}")
echo "Contributors: $OUTPUT"
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