#! /bin/sh # ylwrap - wrapper for lex/yacc invocations. # Copyright (C) 1996, 1997 Free Software Foundation, Inc. # Written by Tom Tromey <tromey@cygnus.com>. # # 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 INPUT [OUTPUT DESIRED]... -- [ARGS]... # * PROGRAM is program to run. # * INPUT is the input file # * OUTPUT is file PROG generates # * DESIRED is file we actually want # * ARGS are passed to PROG # 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 # The input. input="$1" shift case "$input" in /* | [A-Za-z]:\\*) # Absolute path; do nothing. ;; *) # Relative path. Make it absolute. Why? Because otherwise any # debugging info in the generated file will point to the wrong # place. This is really gross. input="`pwd`/$input" ;; esac # We don't want to use the absolute path if the input in the current # directory like when making a tar ball. input_base=`echo $input | sed -e 's|.*/||'` if test -f $input_base && cmp $input_base $input >/dev/null 2>&1; then input=$input_base fi pairlist= while test "$#" -ne 0; do if test "$1" = "--"; then shift break fi pairlist="$pairlist $1" shift done # 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 $dirname case "$input" in /* | [A-Za-z]:\\*) # Absolute path; do nothing. ;; *) # Make a symbolic link, hard link or hardcopy. ln -s ../"$input" . > /dev/null 2>&1 || ln ../"$input" . > /dev/null 2>&1 || cp ../"$input" . ;; esac $prog ${1+"$@"} "$input" status=$? if test $status -eq 0; then set X $pairlist shift first=yes while test "$#" -ne 0; do if test -f "$1"; 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 mv "$1" "$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