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#!/bin/sh
#
# Git hook to run ShellCheck.
#
# ShellCheck <https://www.shellcheck.net/>
# Treat unset variables as an error when performing parameter expansion.
set -u
TRUE=0
FALSE=1
die() {
echo "$@" >&2
exit 1
}
if ! command -v shellcheck >/dev/null; then
echo 'unable to locate shellcheck' >&2
return 0
fi
success=${TRUE}
for f in $(git diff --cached --name-only); do
# Check for file deletion.
if [ ! -r "${f}" ]; then
continue
fi
cmd=':'
case "${f}" in
shflags|shflags_test_helpers) cmd="shellcheck -s sh ${f}" ;;
*.sh) cmd="shellcheck ${f}" ;;
esac
if ! ${cmd}; then
success=${FALSE}
echo "shellcheck error for '${f}'" >&2
fi
done
exit ${success}
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