#!/bin/sh

# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0.  If a copy of the MPL was not distributed with this
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
#
# See the COPYRIGHT file distributed with this work for additional
# information regarding copyright ownership.

status=0

#
# Check for missing #include <isc/strerr.h>
#
list=$(git grep -wl strerror_r lib bin \
  | grep '\.c$' \
  | grep -vE -e '(lib/bind|lib/dns/rdata|lib/dns/gen.c)' \
    -e lib/isc/string.c \
    -e '(dlzexternal/driver.c)' \
  | xargs grep -EL "(isc/strerr.h)" 2>/dev/null)
[ -n "$list" ] && {
  status=1
  echo 'Missing #include <isc/strerr.h>:'
  echo "$list"
}

#
# Check for missing #include <inttypes.h>"
#
list=$(git grep -l uintptr_t lib bin \
  | grep '\.c$' \
  | grep -vE -e '(lib/bind|lib/dns/rdata|lib/dns/gen.c)' \
    -e '(lib/isc/win32/time.c)' \
  | xargs grep -L "<inttypes.h>")
[ -n "$list" ] && {
  status=1
  echo 'Missing #include <inttypes.h>:'
  echo "$list"
}

#
# Check for the direct usage of stdatomic.h
#
list=$(git grep -l stdatomic.h lib bin ':(exclude)lib/isc/include/isc/atomic\.h' \
  | grep -e '\.c$' -e '\.h$')
[ -n "$list" ] && {
  status=1
  echo 'Use #include <isc/atomic.h> instead of #include <stdatomic.h>:'
  echo "$list"
}

#
# Check for the usage of explicit memory ordering
#
list=$(git grep -l memory_order_.* lib bin ':(exclude)lib/isc/include/isc/atomic\.h' \
  | grep -e '\.c$' -e '\.h$')
[ -n "$list" ] && {
  status=1
  echo 'Prefer the helpers in <isc/atomic.h> over specifying an explicit memory order:'
  echo "$list"
}

#
# Check for the usage of built-in bit operarators
#
list=$(git grep -l -e '__builtin_ctz' --or -e '__builtin_popcount' --or -e '__builtin_clz' lib bin ':(exclude)lib/isc/include/isc/bit\.h' \
  | grep -e '\.c$' -e '\.h$')
[ -n "$list" ] && {
  status=1
  echo 'Prefer the helpers in <isc/bit.h> over builtin bit utilities:'
  echo "$list"
}

exit $status