#!/bin/bash -eu
# Copyright 2018 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
################################################################################

# "Build the project" is a no-op. There is no "./configure.sh && make" dance.
# Wuffs' generated C files are "drop-in libraries" a la
# http://gpfault.net/posts/drop-in-libraries.txt.html

for f in fuzz/c/std/*_fuzzer.c; do
  # Extract the format name, such as "gzip", from the C file name,
  # "fuzz/c/std/gzip_fuzzer.c".
  b=$(basename $f _fuzzer.c)

  # Make the "gzip_fuzzer" binary. First compile the (C) Wuffs code, then link
  # the (C++) fuzzing library.
  $CC $CFLAGS -c -std=c99 $f -o $WORK/${b}_fuzzer.o
  $CXX $CXXFLAGS $WORK/${b}_fuzzer.o -o $OUT/${b}_fuzzer $LIB_FUZZING_ENGINE

  # Make the optional "gzip_fuzzer_seed_corpus.zip" archive. This means
  # extracting the "foo/bar/*.gz" out of the matching "gzip: foo/bar/*.gz"
  # lines in fuzz/c/std/seed_corpora.txt.
  seeds=$(sed -n -e "/^$b:/s/^$b: *//p" fuzz/c/std/seed_corpora.txt)
  if [ -n "$seeds" ]; then
    zip --junk-paths $OUT/${b}_fuzzer_seed_corpus.zip $seeds
  fi
done