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copy, not symlink, for ylwrap.
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Micah Cowan
parent
1c231299bd
commit
3ac65ef3d4
223
ylwrap
Executable file
223
ylwrap
Executable file
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#! /bin/sh
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# ylwrap - wrapper for lex/yacc invocations.
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scriptversion=2005-05-14.22
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# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005
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# Free Software Foundation, Inc.
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#
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# Written by Tom Tromey <tromey@cygnus.com>.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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# As a special exception to the GNU General Public License, if you
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# distribute this file as part of a program that contains a
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# configuration script generated by Autoconf, you may include it under
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# the same distribution terms that you use for the rest of that program.
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# This file is maintained in Automake, please report
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# bugs to <bug-automake@gnu.org> or send patches to
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# <automake-patches@gnu.org>.
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case "$1" in
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'')
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echo "$0: No files given. Try \`$0 --help' for more information." 1>&2
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exit 1
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;;
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--basedir)
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basedir=$2
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shift 2
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;;
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-h|--h*)
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cat <<\EOF
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Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
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Wrapper for lex/yacc invocations, renaming files as desired.
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INPUT is the input file
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OUTPUT is one file PROG generates
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DESIRED is the file we actually want instead of OUTPUT
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PROGRAM is program to run
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ARGS are passed to PROG
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Any number of OUTPUT,DESIRED pairs may be used.
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Report bugs to <bug-automake@gnu.org>.
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EOF
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exit $?
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;;
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-v|--v*)
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echo "ylwrap $scriptversion"
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exit $?
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;;
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esac
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# The input.
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input="$1"
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shift
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case "$input" in
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[\\/]* | ?:[\\/]*)
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# Absolute path; do nothing.
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;;
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*)
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# Relative path. Make it absolute.
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input="`pwd`/$input"
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;;
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esac
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pairlist=
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while test "$#" -ne 0; do
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if test "$1" = "--"; then
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shift
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break
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fi
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pairlist="$pairlist $1"
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shift
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done
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# The program to run.
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prog="$1"
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shift
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# Make any relative path in $prog absolute.
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case "$prog" in
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[\\/]* | ?:[\\/]*) ;;
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*[\\/]*) prog="`pwd`/$prog" ;;
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esac
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# FIXME: add hostname here for parallel makes that run commands on
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# other machines. But that might take us over the 14-char limit.
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dirname=ylwrap$$
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trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
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mkdir $dirname || exit 1
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cd $dirname
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case $# in
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0) $prog "$input" ;;
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*) $prog "$@" "$input" ;;
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esac
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ret=$?
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if test $ret -eq 0; then
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set X $pairlist
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shift
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first=yes
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# Since DOS filename conventions don't allow two dots,
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# the DOS version of Bison writes out y_tab.c instead of y.tab.c
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# and y_tab.h instead of y.tab.h. Test to see if this is the case.
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y_tab_nodot="no"
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if test -f y_tab.c || test -f y_tab.h; then
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y_tab_nodot="yes"
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fi
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# The directory holding the input.
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input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
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# Quote $INPUT_DIR so we can use it in a regexp.
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# FIXME: really we should care about more than `.' and `\'.
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input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
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while test "$#" -ne 0; do
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from="$1"
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# Handle y_tab.c and y_tab.h output by DOS
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if test $y_tab_nodot = "yes"; then
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if test $from = "y.tab.c"; then
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from="y_tab.c"
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else
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if test $from = "y.tab.h"; then
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from="y_tab.h"
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fi
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fi
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fi
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if test -f "$from"; then
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# If $2 is an absolute path name, then just use that,
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# otherwise prepend `../'.
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case "$2" in
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[\\/]* | ?:[\\/]*) target="$2";;
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*) target="../$2";;
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esac
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# We do not want to overwrite a header file if it hasn't
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# changed. This avoid useless recompilations. However the
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# parser itself (the first file) should always be updated,
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# because it is the destination of the .y.c rule in the
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# Makefile. Divert the output of all other files to a temporary
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# file so we can compare them to existing versions.
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if test $first = no; then
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realtarget="$target"
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target="tmp-`echo $target | sed s/.*[\\/]//g`"
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fi
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# Edit out `#line' or `#' directives.
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#
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# We don't want the resulting debug information to point at
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# an absolute srcdir; it is better for it to just mention the
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# .y file with no path.
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#
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# We want to use the real output file name, not yy.lex.c for
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# instance.
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#
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# We want the include guards to be adjusted too.
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FROM=`echo "$from" | sed \
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
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-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
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TARGET=`echo "$2" | sed \
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
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-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
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sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
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-e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
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# Check whether header files must be updated.
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if test $first = no; then
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if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
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echo "$2" is unchanged
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rm -f "$target"
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else
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echo updating "$2"
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mv -f "$target" "$realtarget"
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fi
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fi
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else
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# A missing file is only an error for the first file. This
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# is a blatant hack to let us support using "yacc -d". If -d
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# is not specified, we don't want an error when the header
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# file is "missing".
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if test $first = yes; then
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ret=1
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fi
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fi
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shift
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shift
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first=no
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done
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else
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ret=$?
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fi
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# Remove the directory.
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cd ..
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rm -rf $dirname
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exit $ret
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# Local Variables:
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# mode: shell-script
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# sh-indentation: 2
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# eval: (add-hook 'write-file-hooks 'time-stamp)
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# time-stamp-start: "scriptversion="
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# time-stamp-format: "%:y-%02m-%02d.%02H"
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# time-stamp-end: "$"
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# End:
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