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#! /bin/sh |
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# ylwrap - wrapper for lex/yacc invocations. |
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# Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. |
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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# Usage: |
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# ylwrap PROGRAM INPUT [OUTPUT DESIRED]... -- [ARGS]... |
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# * PROGRAM is program to run. |
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# * INPUT is the input file |
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# * OUTPUT is file PROG generates |
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# * DESIRED is file we actually want |
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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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# 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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/* | [A-Za-z]:\\*) ;; |
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*/*) prog="`pwd`/$prog" ;; |
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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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/* | [A-Za-z]:\\*) |
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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. Why? Because otherwise any |
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# debugging info in the generated file will point to the wrong |
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# place. This is really gross. |
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input="`pwd`/$input" |
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;; |
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esac |
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# We don't want to use the absolute path if the input in the current |
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# directory like when making a tar ball. |
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input_base=`echo $input | sed -e 's|.*/||'` |
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if test -f $input_base && cmp $input_base $input >/dev/null 2>&1; then |
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input=$input_base |
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fi |
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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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# 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 $dirname |
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case "$input" in |
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/* | [A-Za-z]:\\*) |
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# Absolute path; do nothing. |
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;; |
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*) |
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# Make a symbolic link, hard link or hardcopy. |
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ln -s ../"$input" . > /dev/null 2>&1 || ln ../"$input" . > /dev/null 2>&1 || cp ../"$input" . |
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;; |
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esac |
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$prog ${1+"$@"} "$input" |
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status=$? |
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if test $status -eq 0; then |
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set X $pairlist |
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shift |
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first=yes |
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while test "$#" -ne 0; do |
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if test -f "$1"; 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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/* | [A-Za-z]:\\*) target="$2";; |
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*) target="../$2";; |
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esac |
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mv "$1" "$target" || status=$? |
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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 $first = yes; then |
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status=1 |
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fi |
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fi |
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shift |
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shift |
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first=no |
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done |
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else |
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status=$? |
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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 $status |
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