#!/bin/sh
# guile-snarf-docs --- Extract the doc stuff for builtin things.
##
# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001,
#   2006, 2010 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 3, or (at
# your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this software; see the file COPYING.LESSER.  If
# not, write to the Free Software Foundation, Inc., 51 Franklin
# Street, Fifth Floor, Boston, MA 02110-1301 USA
##
# Usage: guile-snarf-docs -o DOC SRC -- [CPPSNARFOPTS...]
##

filter='./guile_filter_doc_snarfage@EXEEXT@'

## Let the user override the preprocessor autoconf found.
test -n "${CPP+set}" || CPP="@CPP@"

## Likewise for AWK.
test -n "${AWK+set}" || AWK="@AWK@"

bummer ()
{
    echo 'Bad command-line' $1
    exit 1
}

test "x$1" = x-o || bummer
shift

test "x$1" = x && bummer ': missing DOC'
output="$1"
temout="$output"T
shift

test "x$1" && test -r "$1" || bummer ': missing SRC'
input="$1"
shift

test "x$1" = x-- || bummer
shift

# Before snarfing, do the function name check.
${AWK} -f '@srcdir@/guile-func-name-check' "$input" || exit 1

# Snarfing takes two steps: cpp and tokenization.
# If cpp fails, don't bother with tokenization.
if ${CPP} -DSCM_MAGIC_SNARF_DOCS "$@" "$input" > "$temout" ; then
    $filter --filter-snarfage < "$temout" > "$output"
    rv=0
else
    rv=1
fi
rm -f "$temout"
exit $rv

# guile-snarf-docs ends here