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#! /bin/sh |
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# ylwrap - wrapper for lex/yacc invocations. |
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|
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scriptversion=2011-08-25.18; # UTC |
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|
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# Copyright (C) 1996-2012 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, see <http://www.gnu.org/licenses/>. |
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|
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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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|
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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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|
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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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|
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Wrapper for lex/yacc invocations, renaming files as desired. |
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|
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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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|
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Any number of OUTPUT,DESIRED pairs may be used. |
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|
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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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|
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get_dirname () |
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{ |
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case $1 in |
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*/*|*\\*) printf '%s\n' "$1" | sed -e 's,\([\\/]\)[^\\/]*$,\1,';; |
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# Otherwise, we want the empty string (not "."). |
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esac |
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} |
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|
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quote_for_sed () |
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{ |
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# FIXME: really we should care about more than '.' and '\'. |
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sed -e 's,[\\.],\\&,g' |
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} |
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|
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# The input. |
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input="$1" |
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shift |
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# We'll later need for a correct munging of "#line" directives. |
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input_sub_rx=`get_dirname "$input" | quote_for_sed` |
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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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|
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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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|
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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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|
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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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do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret' |
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trap "ret=129; $do_exit" 1 |
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trap "ret=130; $do_exit" 2 |
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trap "ret=141; $do_exit" 13 |
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trap "ret=143; $do_exit" 15 |
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mkdir $dirname || exit 1 |
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|
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cd $dirname |
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|
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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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|
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if test $ret -eq 0; then |
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set X $pairlist |
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shift |
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first=yes |
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# Since DOS filename conventions don't allow two dots, |
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# the DOS version of Bison writes out y_tab.c instead of y.tab.c |
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# and y_tab.h instead of y.tab.h. Test to see if this is the case. |
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y_tab_nodot="no" |
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if test -f y_tab.c || test -f y_tab.h; then |
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y_tab_nodot="yes" |
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fi |
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|
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input_rx=`get_dirname "$input" | quote_for_sed` |
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|
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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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|
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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 $target | sed s/.*[\\/]//g`" |
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fi |
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# Munge "#line" or "#" directives. |
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# We don't want the resulting debug information to point at |
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# an absolute srcdir. |
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# We want to use the real output file name, not yy.lex.c for |
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# instance. |
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# We want the include guards to be adjusted too. |
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FROM=`echo "$from" | sed \ |
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
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TARGET=`echo "$2" | sed \ |
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
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|
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sed -e "/^#/!b" -e "s,$input_rx,$input_sub_rx," -e "s,$from,$2," \ |
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-e "s,$FROM,$TARGET," "$from" >"$target" || ret=$? |
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|
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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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|
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# Remove the directory. |
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cd .. |
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rm -rf $dirname |
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|
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exit $ret |
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|
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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-time-zone: "UTC" |
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# time-stamp-end: "; # UTC" |
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# End: |
