core-lightning/devtools/unused-functions.sh

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#! /bin/sh
# Files to look inside: don't count test files. We don't use git grep
# because we want to find occurences in wiregen files.
FILES=$(find ./* -name '*.[ch]' | grep -v /test/run- | grep -v ^./ccan/ | grep -v ^./external/ | grep -v ^./tests/)
if [ $# = 0 ]; then
HEADERS=$(echo [a-z]*/*.h)
else
HEADERS="$*"
fi
for hfile in $HEADERS; do
# Don't worry about wiregen unused functions.
if [ "${hfile%_wiregen.h}" != "${hfile}" ]; then
continue
fi
# shellcheck disable=SC2010 disable=SC2086
USING=$(ls $FILES | grep -v "^./${hfile%.h}\.")
funcs=$(sed -n 's/^[^#].* \**\([a-z0-9_]*\)(.*/\1/p;s/^\([a-z0-9_]*\)(.*/\1/p' < "$hfile")
for f in $funcs; do
# Ignore C and H files both: don't use git grep since we want to find
# occurrences in generated files too.
# echo Looking through $(echo $FILES | grep -v "^${hfile%.h}\.")
# shellcheck disable=SC2086
if ! grep -qw $f $USING; then
echo "$(grep -nHw "$f" "$hfile" | head -n1)": "$f" unused
fi
done
done