# Copyright (C) Alexander Borisov
# Copyright (C) NGINX, Inc.


shift

for nxt_option; do

    case "$nxt_option" in
        -*=*) value=`echo "$nxt_option" | sed -e 's/[-_a-zA-Z0-9]*=//'`     ;;
           *) value="" ;;
    esac

    case "$nxt_option" in
        --ruby=*)    NXT_RUBY="$value"                                    ;;
        --module=*)  NXT_RUBY_MODULE="$value"                             ;;

        --help)
            cat << END

    --ruby=FILE    set ruby executable, default: ruby
    --module=NAME  set unit ruby module name

END
            exit 0
        ;;

        *)
            echo
            echo $0: error: invalid Ruby option \"$nxt_option\"
            echo
            exit 1
        ;;
    esac

done


if [ ! -f $NXT_AUTOCONF_DATA ]; then
   echo
   echo Please run common $0 before configuring module \"$nxt_module\".
   echo
   exit 1
fi

. $NXT_AUTOCONF_DATA

$echo "configuring Ruby module"
$echo "configuring Ruby module ..." >> $NXT_AUTOCONF_ERR

NXT_RUBY=${NXT_RUBY=ruby}
NXT_RUBY_MODULE=${NXT_RUBY_MODULE=${NXT_RUBY}}

nxt_found=no

if /bin/sh -c "$NXT_RUBY -v" >> $NXT_AUTOCONF_ERR 2>&1; then

    NXT_RUBY_CFLAGS=
    NXT_RUBY_RUBYHDRDIR=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["rubyhdrdir"]'`
    NXT_RUBY_ARCHHDRDIR=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["rubyarchhdrdir"]'`
    NXT_RUBY_SITEDIR=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["sitedir"]'`
    NXT_RUBY_LIBDIR=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["rubylibdir"]'`
    NXT_RUBY_TOPDIR=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["topdir"]'`
    NXT_RUBY_PREFIXDIR=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["rubylibprefix"]'`

    NXT_RUBY_GEMPATH=`$NXT_RUBY -rrubygems -e 'print Gem.default_path().join(":")'`

    NXT_RUBY_INCPATH="-I$NXT_RUBY_ARCHHDRDIR -I$NXT_RUBY_RUBYHDRDIR"

    NXT_RUBY_LIBNAME=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["RUBY_SO_NAME"]'`
    NXT_RUBY_LIBSCONF=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["LIBS"]'`
    NXT_RUBY_LIBPATH=`$NXT_RUBY -rrbconfig -e 'print RbConfig::CONFIG["libdir"]'`
    NXT_RUBY_LIBS="-l$NXT_RUBY_LIBNAME $NXT_RUBY_LIBSCONF"

    if [ $NXT_CC_NAME = clang ]; then
        # Workaround Clang bug
        nxt_feature="-fdeclspec"
        nxt_feature_name=
        nxt_feature_run=
        nxt_feature_incs="-fdeclspec"
        nxt_feature_libs=
        nxt_feature_test="#include <stdlib.h>

                          __declspec(noreturn) static void f(void);

                          static void f(void) {
                              exit(0);
                          }

                          int main(void) {
                              f();
                          }"
        . auto/feature

        if [ $nxt_found = yes ]; then
            NXT_RUBY_CFLAGS="$NXT_RUBY_CFLAGS -fdeclspec"
        fi
    fi

    nxt_feature="Ruby library"
    nxt_feature_name=""
    nxt_feature_run=value
    nxt_feature_incs="${NXT_RUBY_INCPATH} ${NXT_RUBY_CFLAGS}"
    nxt_feature_libs="${NXT_RUBY_LIBS}"
    nxt_feature_test="
        #include <ruby.h>

        int main(void) {
            static const char *argv[3] = {
                \"NGINX_Unit\", \"-rrbconfig\",
                \"-eprint RbConfig::CONFIG['libdir']\"
            };

            RUBY_INIT_STACK;
            ruby_init();
            return ruby_run_node(ruby_options(3, (char **) argv));
        }"

    . auto/feature

    if [ "$nxt_feature_value" != "$NXT_RUBY_LIBPATH" ]; then
        NXT_RUBY_LIBS="-L$NXT_RUBY_LIBPATH -Wl,-rpath,${NXT_RUBY_LIBPATH} $NXT_RUBY_LIBS"

        nxt_feature="Ruby library in $NXT_RUBY_LIBPATH"
        nxt_feature_name=""
        nxt_feature_run=no
        nxt_feature_incs="${NXT_RUBY_INCPATH} ${NXT_RUBY_CFLAGS}"
        nxt_feature_libs="${NXT_RUBY_LIBS}"
        nxt_feature_test="
            #include <ruby.h>

            int main(void) {
                ruby_init();
                return ruby_cleanup(0);
            }"

        . auto/feature
    fi

else
    $echo "checking for Ruby ... not found"
fi

if [ $nxt_found = no ]; then
    $echo
    $echo $0: error: no Ruby found.
    $echo
    exit 1;
fi


nxt_feature="Ruby version"
nxt_feature_name=""
nxt_feature_run=value
nxt_feature_incs="${NXT_RUBY_INCPATH} ${NXT_RUBY_CFLAGS}"
nxt_feature_libs="${NXT_RUBY_LIBS}"
nxt_feature_test="
    #include <ruby.h>
    #include <ruby/version.h>

    int main(void) {
        printf(\"%s\", ruby_version);
        return 0;
    }"

. auto/feature


if grep ^$NXT_RUBY_MODULE: $NXT_MAKEFILE 2>&1 > /dev/null; then
    $echo
    $echo $0: error: duplicate \"$NXT_RUBY_MODULE\" module configured.
    $echo
    exit 1;
fi


NXT_RUBY_MOUNTS_HEADER=nxt_${NXT_RUBY_MODULE}_mounts.h
NXT_RUBY_MOUNTS_PATH=$NXT_BUILD_DIR/include/$NXT_RUBY_MOUNTS_HEADER

cat << END > $NXT_RUBY_MOUNTS_PATH

static const nxt_fs_mount_t  nxt_ruby_mounts[] = {
    {(u_char *) "$NXT_RUBY_RUBYHDRDIR", (u_char *) "$NXT_RUBY_RUBYHDRDIR",
     NXT_FS_BIND, (u_char *) "bind", 0, NULL, 1, 1},
    {(u_char *) "$NXT_RUBY_ARCHHDRDIR", (u_char *) "$NXT_RUBY_ARCHHDRDIR",
     NXT_FS_BIND, (u_char *) "bind", 0, NULL, 1, 1},
    {(u_char *) "$NXT_RUBY_SITEDIR", (u_char *) "$NXT_RUBY_SITEDIR",
     NXT_FS_BIND, (u_char *) "bind", 0, NULL, 1, 1},
    {(u_char *) "$NXT_RUBY_LIBDIR", (u_char *) "$NXT_RUBY_LIBDIR",
     NXT_FS_BIND, (u_char *) "bind", 0, NULL, 1, 1},
    {(u_char *) "$NXT_RUBY_TOPDIR", (u_char *) "$NXT_RUBY_TOPDIR",
     NXT_FS_BIND, (u_char *) "bind", 0, NULL, 1, 1},
    {(u_char *) "$NXT_RUBY_PREFIXDIR", (u_char *) "$NXT_RUBY_PREFIXDIR",
     NXT_FS_BIND, (u_char *) "bind", 0, NULL, 1, 1},

END

for path in `echo $NXT_RUBY_GEMPATH | tr ':' '\n'`; do
   $echo "{(u_char *) \"$path\", (u_char *) \"$path\"," >> $NXT_RUBY_MOUNTS_PATH
   $echo "NXT_FS_BIND, (u_char *) \"bind\", 0, NULL, 1, 1}," >> $NXT_RUBY_MOUNTS_PATH
done

$echo "};" >> $NXT_RUBY_MOUNTS_PATH


$echo " + Ruby module: ${NXT_RUBY_MODULE}.unit.so"

. auto/cc/deps

$echo >> $NXT_MAKEFILE

NXT_RUBY_MODULE_SRCS=" \
    src/ruby/nxt_ruby.c \
    src/ruby/nxt_ruby_stream_io.c
"

# The Ruby module object files.

nxt_objs=$NXT_BUILD_DIR/src/nxt_unit.o

for nxt_src in $NXT_RUBY_MODULE_SRCS; do

    nxt_obj=${nxt_src%.c}-$NXT_RUBY_MODULE.o
    nxt_dep=${nxt_src%.c}-$NXT_RUBY_MODULE.dep
    nxt_dep_flags=`nxt_gen_dep_flags`
    nxt_dep_post=`nxt_gen_dep_post`
    nxt_objs="$nxt_objs $NXT_BUILD_DIR/$nxt_obj"

    cat << END >> $NXT_MAKEFILE

$NXT_BUILD_DIR/$nxt_obj:	$nxt_src $NXT_VERSION_H
	mkdir -p $NXT_BUILD_DIR/src/ruby
	\$(CC) -c \$(CFLAGS) $NXT_RUBY_CFLAGS -DNXT_RUBY_MOUNTS_H=\"$NXT_RUBY_MOUNTS_HEADER\" \\
           \$(NXT_INCS) $NXT_RUBY_INCPATH \\
	$nxt_dep_flags \\
	-o \$@ $nxt_src
	$nxt_dep_post

-include $NXT_BUILD_DIR/$nxt_dep

END

done

cat << END >> $NXT_MAKEFILE

.PHONY: ${NXT_RUBY_MODULE}
.PHONY: ${NXT_RUBY_MODULE}-install
.PHONY: ${NXT_RUBY_MODULE}-uninstall

all: ${NXT_RUBY_MODULE}

${NXT_RUBY_MODULE}:	$NXT_BUILD_DIR/lib/unit/modules/${NXT_RUBY_MODULE}.unit.so

$NXT_BUILD_DIR/lib/unit/modules/${NXT_RUBY_MODULE}.unit.so:	$nxt_objs
	\$(NXT_MODULE_LINK) -o \$@ $nxt_objs $NXT_RUBY_LIBS $NXT_LD_OPT


install: ${NXT_RUBY_MODULE}-install

${NXT_RUBY_MODULE}-install: ${NXT_RUBY_MODULE} install-check
	install -d \$(DESTDIR)$NXT_MODULESDIR
	install -p $NXT_BUILD_DIR/lib/unit/modules/${NXT_RUBY_MODULE}.unit.so \\
		\$(DESTDIR)$NXT_MODULESDIR/


uninstall: ${NXT_RUBY_MODULE}-uninstall

${NXT_RUBY_MODULE}-uninstall:
	rm -f \$(DESTDIR)$NXT_MODULESDIR/${NXT_RUBY_MODULE}.unit.so
	@rmdir -p \$(DESTDIR)$NXT_MODULESDIR 2>/dev/null || true

END