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|
#! /bin/sh
# ylwrap - wrapper for lex/yacc invocations.
# Copyright 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
# Written by Tom Tromey <tromey@cygnus.com>.
# -yy modification by Sergey Poznyakoff <gray@farlep.net>
#
# 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 program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# Usage:
# ylwrap PROGRAM [ARGS] INPUT [OUTPUT DESIRED]... -- [-yy repl] [ARGS]...
# * PROGRAM is program to run; options can follow but must start with `-'.
# * INPUT is the input file
# * OUTPUT is file PROG generates
# * DESIRED is file we actually want
# * ARGS are passed to PROG
# * Optional -yy introduces the sequence to replace yy prefixes with.
# Any number of OUTPUT,DESIRED pairs may be used.
# The program to run.
prog="$1"
shift
# Make any relative path in $prog absolute.
case "$prog" in
/* | [A-Za-z]:*) ;;
*/*) prog="`pwd`/$prog" ;;
esac
# We also have to accept options here and append them to the program.
# Why? Suppose YACC is set to `bison -y'. Clearly nobody uses
# ylwrap, or this would have been discovered earlier!
while :; do
case "$1" in
-*)
prog="$prog $1"
shift
;;
*)
break
;;
esac
done
# The input.
input="$1"
shift
case "$input" in
/* | [A-Za-z]:*)
# Absolute path; do nothing.
;;
*)
# Relative path. Make it absolute.
input="`pwd`/$input"
;;
esac
# The directory holding the input.
input_dir="`echo $input | sed -e 's,/[^/]*$,,'`"
# Quote $INPUT_DIR so we can use it in a regexp.
# FIXME: really we should care about more than `.'.
input_rx="`echo $input_dir | sed -e 's,\.,\\\.,g'`"
pairlist=
while test "$#" -ne 0; do
if test "$1" = "--"; then
shift
break
fi
pairlist="$pairlist $1"
shift
done
if [ $# -ne 0 ]; then
if [ "x$1" = "x-yy" ]; then
shift
if [ $# -eq 0 ]; then
echo "ylwrap: -yy requires an argument"
exit 1
fi
YYREPL=$1
shift
fi
fi
# FIXME: add hostname here for parallel makes that run commands on
# other machines. But that might take us over the 14-char limit.
dirname=ylwrap$$
trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
mkdir $dirname || exit 1
cd $dirname
$prog ${1+"$@"} "$input"
status=$?
if test $status -eq 0; then
set X $pairlist
shift
first=yes
# Since DOS filename conventions don't allow two dots,
# the DOS version of Bison writes out y_tab.c instead of y.tab.c
# and y_tab.h instead of y.tab.h. Test to see if this is the case.
y_tab_nodot="no"
if test -f y_tab.c || test -f y_tab.h; then
y_tab_nodot="yes"
fi
while test "$#" -ne 0; do
from="$1"
# Handle y_tab.c and y_tab.h output by DOS
if test $y_tab_nodot = "yes"; then
if test $from = "y.tab.c"; then
from="y_tab.c"
else
if test $from = "y.tab.h"; then
from="y_tab.h"
fi
fi
fi
if test -f "$from"; then
# If $2 is an absolute path name, then just use that,
# otherwise prepend `../'.
case "$2" in
/* | [A-Za-z]:*) target="$2";;
*) target="../$2";;
esac
# Edit out `#line' or `#' directives. We don't want the
# resulting debug information to point at an absolute srcdir;
# it is better for it to just mention the .y file with no
# path.
EXPR="/^#/ s,$input_rx/,,"
if [ ! -z "$YYREPL" ]; then
EXPR="$EXPR;s/yy/$YYREPL/g"
fi
sed -e "$EXPR" "$from" > "$target" || status=$?
else
# A missing file is only an error for the first file. This
# is a blatant hack to let us support using "yacc -d". If -d
# is not specified, we don't want an error when the header
# file is "missing".
if test $first = yes; then
status=1
fi
fi
shift
shift
first=no
done
else
status=$?
fi
# Remove the directory.
cd ..
rm -rf $dirname
exit $status
|
