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#!/bin/sh
# Extract the initialization actions from source files.
#
# Copyright (C) 1996, 97, 98, 99, 2000, 2001, 2002 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this software; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
# Commentary:
# Usage: guile-snarf [-d | -D] [-o OUTFILE] INFILE [CPP-OPTIONS ...]
#
# Process INFILE using the C pre-processor and some other programs.
# Write output to a file, named OUTFILE if specified, or STEM.x if
# INFILE looks like STEM.c and no OUTFILE is specified. Ignore
# lines from the input matching grep(1) regular expression:
#
# ^#include ".*OUTFILE"
#
# If there are errors during processing, delete OUTFILE and exit with
# non-zero status.
#
# Optional arg "-d" means grep INFILE for deprecated macros and
# issue a warning if any are found. Alternatively, "-D" means
# do the same thing but signal error and exit w/ non-zero status.
#
# If env var CPP is set, use its value instead of the C pre-processor
# determined at Guile configure-time: "@CPP@".
# Code:
## config
deprecated_list="
SCM_CONST_LONG
SCM_VCELL
SCM_VCELL_INIT
SCM_GLOBAL_VCELL
SCM_GLOBAL_VCELL_INIT
"
## funcs
modern_snarf () # writes stdout
{
${cpp} -DSCM_MAGIC_SNARF_INITS "$@" > ${temp} && cpp_ok_p=true
grep "^ *\^ *\^" ${temp} | sed -e "s/^ *\^ *\^//" -e "s/\^\ *:\ *\^.*/;/"
}
grep_deprecated () # $1 is the filename
{
regexp="(^greetings!spooks!hows!life)"
for dep in `echo $deprecated_list` ; do
regexp="(^${dep}[^_A-Z])|${regexp}"
done
egrep -n ${regexp} $1 /dev/null > ${temp}
if [ -s ${temp} ] ; then
if $grep_dep_exit_p ; then hey=ERROR ; else hey=WARNING ; fi
echo $0: $hey: deprecated macros found:
sed -e 's/.clean.c:/:/g' ${temp}
$grep_dep_exit_p && exit 1
fi
}
## main
# process command line
if [ x"$1" = x--help ] ; then
@AWK@ '/^#.Commentary:/,/^#.Code:/' $0 | grep -v Code: \
| sed -e 1,2d -e 's/^. *//g'
exit 0
fi
case x"$1" in x-d) grep_dep_p=true ; grep_dep_exit_p=false ; shift ;;
x-D) grep_dep_p=true ; grep_dep_exit_p=true ; shift ;;
*) grep_dep_p=false ;;
esac
if [ x"$1" = x-o ]
then outfile=$2 ; shift ; shift ; infile=$1 ; shift
else infile=$1 ; shift ; outfile=`basename $infile .c`.x
fi
[ x"$infile" = x ] && { echo $0: No input file ; exit 1 ; }
[ ! -f "$infile" ] && { echo $0: No such file: $infile ; exit 1 ; }
# set vars and handler -- handle CPP override
cpp_ok_p=false
temp="/tmp/snarf.$$"
if [ x"$CPP" = x ] ; then cpp="@CPP@" ; else cpp="$CPP" ; fi
self_blind_regexp='^#include ".*'`basename $outfile`'"'
clean_infile=$infile.clean.c # temp file in same dir as infile
# so that #include "foo" works
# (e.g., see libguile/eval.c).
# use .c to satisfy cpp heuristics.
trap "rm -f $temp $clean_infile" 0 1 2 15
# clean input file
grep -v "$self_blind_regexp" $infile > $clean_infile
# grep deprecated
$grep_dep_p && grep_deprecated $clean_infile
# do the snarfing -- output something extra for needy cpp programs (AIX)
{ echo "/* source: $infile */" ;
echo "/* cpp-options: $@ */" ;
modern_snarf "$@" $clean_infile ;
} > $outfile
# zonk outfile if errors occurred
if $cpp_ok_p ; then
exit 0
else
rm -f $outfile
exit 1
fi
# guile-snarf ends here
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