#! /bin/sh
# ylwrap - wrapper for lex/yacc invocations.
-
-scriptversion=2004-09-10.20
-
-# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
-# Free Software Foundation, Inc.
-#
+# 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
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
+# 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.
-# This file is maintained in Automake, please report
-# bugs to <bug-automake@gnu.org> or send patches to
-# <automake-patches@gnu.org>.
-
-case "$1" in
- '')
- echo "$0: No files given. Try \`$0 --help' for more information." 1>&2
- exit 1
- ;;
- --basedir)
- basedir=$2
- shift 2
- ;;
- -h|--h*)
- cat <<\EOF
-Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
-
-Wrapper for lex/yacc invocations, renaming files as desired.
-
- INPUT is the input file
- OUTPUT is one file PROG generates
- DESIRED is the file we actually want instead of OUTPUT
- PROGRAM is program to run
- ARGS are passed to PROG
-
-Any number of OUTPUT,DESIRED pairs may be used.
-
-Report bugs to <bug-automake@gnu.org>.
-EOF
- exit 0
- ;;
- -v|--v*)
- echo "ylwrap $scriptversion"
- exit 0
- ;;
+# 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.
+ *)
+ # 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
+ if test "$1" = "--"; then
+ shift
+ break
+ fi
+ pairlist="$pairlist $1"
+ shift
done
-# The program to run.
-prog="$1"
-shift
-# Make any relative path in $prog absolute.
-case "$prog" in
- [\\/]* | ?:[\\/]*) ;;
- *[\\/]*) prog="`pwd`/$prog" ;;
-esac
-
# 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$$
mkdir $dirname || exit 1
cd $dirname
-
-case $# in
- 0) $prog "$input" ;;
- *) $prog "$@" "$input" ;;
+case "$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 ../"$input" .
+ ;;
esac
-ret=$?
-
-if test $ret -eq 0; then
- set X $pairlist
- shift
- first=yes
- # Since DOS filename conventions don't allow two dots,
- # the DOS version of Bison writes out y_tab.c instead of y.tab.c
- # and y_tab.h instead of y.tab.h. Test to see if this is the case.
- y_tab_nodot="no"
- if test -f y_tab.c || test -f y_tab.h; then
- y_tab_nodot="yes"
- fi
-
- # The directory holding the input.
- input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
- # Quote $INPUT_DIR so we can use it in a regexp.
- # FIXME: really we should care about more than `.' and `\'.
- input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
-
- 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 $from = "y.tab.c"; then
- from="y_tab.c"
+$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
- 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
- [\\/]* | ?:[\\/]*) target="$2";;
- *) target="../$2";;
- esac
-
- # We do not want to overwrite a header file if it hasn't
- # changed. This avoid useless recompilations. However the
- # parser itself (the first file) should always be updated,
- # because it is the destination of the .y.c rule in the
- # Makefile. Divert the output of all other files to a temporary
- # file so we can compare them to existing versions.
- if test $first = no; then
- realtarget="$target"
- target="tmp-`echo $target | sed s/.*[\\/]//g`"
+ # 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 $first = yes; then
+ status=1
+ fi
fi
- # Edit out `#line' or `#' directives.
- #
- # We don't want the resulting debug information to point at
- # an absolute srcdir; it is better for it to just mention the
- # .y file with no path.
- #
- # We want to use the real output file name, not yy.lex.c for
- # instance.
- #
- # We want the include guards to be adjusted too.
- FROM=`echo "$from" | sed \
- -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
- -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
- TARGET=`echo "$2" | sed \
- -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
- -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
-
- sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
- -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
-
- # Check whether header files must be updated.
- if test $first = no; then
- if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
- echo "$2" is unchanged
- rm -f "$target"
- else
- echo updating "$2"
- mv -f "$target" "$realtarget"
- fi
- fi
- 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 $first = yes; then
- ret=1
- fi
- fi
- shift
- shift
- first=no
- done
+ shift
+ shift
+ first=no
+ done
else
- ret=$?
+ status=$?
fi
# Remove the directory.
cd ..
rm -rf $dirname
-exit $ret
-
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
-# End:
+exit $status
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