#!/bin/sh

#
# This script is designed to quickly create lots of files in underlying
# test-* directories, do lots of other magic stuff and exit cleanly.
#

set -e

if [ "x$1" = "x" ]; then
	echo "Usage: $0 <check-NN.c>"
	exit
fi

srcdir="${srcdir:-.}"
abs_top_srcdir="${abs_top_srcdir:-$(pwd)/../../}"
abs_top_builddir="${abs_top_builddir:-$(pwd)/../../}"

if echo "$*" | grep -q -- -- ; then
    TEST_DRIVER=$(echo "$*"  | sed -e 's/ -- .*/ -- /g')
    source_full=$(echo "$*"  | sed -e 's/.* //g')
else
    TEST_DRIVER=""
    source_full="$1"
fi

# Compute the .asn1 spec name by the given file name.
source_short=$(echo "$source_full" | sed -e 's/.*\///')
testno=$(echo "$source_short" | cut -f2 -d'-' | cut -f1 -d'.')

CODECS_FLAGS=""
has_oer=$(echo "$source_short" | grep "gen-OER" || :)
if [ ! "$has_oer" ]; then
    CODECS_FLAGS="${CODECS_FLAGS} -DASN_DISABLE_OER_SUPPORT"
fi
has_per=$(echo "$source_short" | grep "gen-PER" || :)
if [ ! "$has_per" ]; then
    CODECS_FLAGS="${CODECS_FLAGS} -DASN_DISABLE_PER_SUPPORT"
fi

args=$(echo "$source_short" | sed -e 's/\.c[c]*$//')

OFS=$IFS
IFS="."
set $args
shift
IFS=$OFS
AFLAGS="$*"

# Assume the test fails. Will be removed when it passes well.
testdir=test-${args}
if [ -f "${testdir}-FAILED" ]; then
    rm -rf "${testdir}"
fi
touch "${testdir}-FAILED"

mkdir -p "${testdir}"
ln -fns "../${source_full}" "${testdir}"

asn_module=$(echo "${abs_top_srcdir}/tests/tests-asn1c-compiler/${testno}"-*.asn1)

AUTOGENERATED="# This file is autogenerated by $0 ${source_full} ${AFLAGS}"

# Create a common Makefile for the project
cat <<TARGETS > "${testdir}/Makefile.targets"
${AUTOGENERATED}

COMMON_FLAGS= -I.
CFLAGS = \${COMMON_FLAGS} ${CFLAGS:-} -g -O0
CPPFLAGS = -DSRCDIR=../${srcdir} ${CODECS_FLAGS}
CXXFLAGS = \${COMMON_FLAGS} ${CXXFLAGS}
LDFLAGS = ${LDFLAGS:-}

CC ?= ${CC}

all: compiled-module
	\$(MAKE) check-executable

check-executable: \$(OBJS)
	@rm -f *.core
	\$(CC) \$(CPPFLAGS) \$(CFLAGS) \$(LDFLAGS) -o check-executable \$(OBJS) -lm

# Compile the corresponding .asn1 spec.
compiled-module: ${asn_module} ${abs_top_builddir}/asn1c/asn1c
	${abs_top_builddir}/asn1c/asn1c		\\
		-S ${abs_top_srcdir}/skeletons	\\
		-Wdebug-compiler		\\
		${AFLAGS} ${asn_module}
	rm -f converter-sample.c
	@touch compiled-module

check-succeeded: compiled-module
	\$(MAKE) check-executable
	@rm -f check-succeeded
	./check-executable
	@touch check-succeeded

check: check-succeeded

clean:
	@rm -f *.o check-executable
TARGETS

# Create a BSD- or GNU-specific Makefile for the project.
produce_specific_makefile() {
    local make_type=$1
    local make_file="$testdir/${make_type}makefile"

    if [ ${make_type} = "BSD" ]; then
		cat <<-OBJECTS > ${make_file}
			${AUTOGENERATED}
			SRCS!=find . -name \*.c
			OBJS=\${SRCS:.c=.o}
			.sinclude <Makefile.targets>
		OBJECTS
	else
		cat <<-OBJECTS > ${make_file}
			${AUTOGENERATED}
			OBJS=\$(patsubst %.c,%.o,\$(wildcard *.c))
			-include Makefile.targets
		OBJECTS
    fi

}

produce_specific_makefile BSD
produce_specific_makefile GNU

# Perform building and checking
${TEST_DRIVER} make -C "$testdir" check

# Make sure the test is not marked as failed any longer.
rm -f "${testdir}-FAILED"