1#! /bin/sh 2# ylwrap - wrapper for lex/yacc invocations. 3 4scriptversion=2003-11-18.20 5 6# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003 7# Free Software Foundation, Inc. 8# 9# Written by Tom Tromey <tromey@cygnus.com>. 10# 11# This program is free software; you can redistribute it and/or modify 12# it under the terms of the GNU General Public License as published by 13# the Free Software Foundation; either version 2, or (at your option) 14# any later version. 15# 16# This program is distributed in the hope that it will be useful, 17# but WITHOUT ANY WARRANTY; without even the implied warranty of 18# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19# GNU General Public License for more details. 20# 21# You should have received a copy of the GNU General Public License 22# along with this program; if not, write to the Free Software 23# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 24 25# As a special exception to the GNU General Public License, if you 26# distribute this file as part of a program that contains a 27# configuration script generated by Autoconf, you may include it under 28# the same distribution terms that you use for the rest of that program. 29 30# This file is maintained in Automake, please report 31# bugs to <bug-automake@gnu.org> or send patches to 32# <automake-patches@gnu.org>. 33 34case "$1" in 35 '') 36 echo "$0: No files given. Try \`$0 --help' for more information." 1>&2 37 exit 1 38 ;; 39 --basedir) 40 basedir=$2 41 shift 2 42 ;; 43 -h|--h*) 44 cat <<\EOF 45Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]... 46 47Wrapper for lex/yacc invocations, renaming files as desired. 48 49 INPUT is the input file 50 OUTPUT is one file PROG generates 51 DESIRED is the file we actually want instead of OUTPUT 52 PROGRAM is program to run 53 ARGS are passed to PROG 54 55Any number of OUTPUT,DESIRED pairs may be used. 56 57Report bugs to <bug-automake@gnu.org>. 58EOF 59 exit 0 60 ;; 61 -v|--v*) 62 echo "ylwrap $scriptversion" 63 exit 0 64 ;; 65esac 66 67 68# The input. 69input="$1" 70shift 71case "$input" in 72 [\\/]* | ?:[\\/]*) 73 # Absolute path; do nothing. 74 ;; 75 *) 76 # Relative path. Make it absolute. 77 input="`pwd`/$input" 78 ;; 79esac 80 81pairlist= 82while test "$#" -ne 0; do 83 if test "$1" = "--"; then 84 shift 85 break 86 fi 87 pairlist="$pairlist $1" 88 shift 89done 90 91# The program to run. 92prog="$1" 93shift 94# Make any relative path in $prog absolute. 95case "$prog" in 96 [\\/]* | ?:[\\/]*) ;; 97 *[\\/]*) prog="`pwd`/$prog" ;; 98esac 99 100# FIXME: add hostname here for parallel makes that run commands on 101# other machines. But that might take us over the 14-char limit. 102dirname=ylwrap$$ 103trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15 104mkdir $dirname || exit 1 105 106cd $dirname 107 108case $# in 109 0) $prog "$input" ;; 110 *) $prog "$@" "$input" ;; 111esac 112status=$? 113 114if test $status -eq 0; then 115 set X $pairlist 116 shift 117 first=yes 118 # Since DOS filename conventions don't allow two dots, 119 # the DOS version of Bison writes out y_tab.c instead of y.tab.c 120 # and y_tab.h instead of y.tab.h. Test to see if this is the case. 121 y_tab_nodot="no" 122 if test -f y_tab.c || test -f y_tab.h; then 123 y_tab_nodot="yes" 124 fi 125 126 # The directory holding the input. 127 input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'` 128 # Quote $INPUT_DIR so we can use it in a regexp. 129 # FIXME: really we should care about more than `.' and `\'. 130 input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'` 131 132 while test "$#" -ne 0; do 133 from="$1" 134 # Handle y_tab.c and y_tab.h output by DOS 135 if test $y_tab_nodot = "yes"; then 136 if test $from = "y.tab.c"; then 137 from="y_tab.c" 138 else 139 if test $from = "y.tab.h"; then 140 from="y_tab.h" 141 fi 142 fi 143 fi 144 if test -f "$from"; then 145 # If $2 is an absolute path name, then just use that, 146 # otherwise prepend `../'. 147 case "$2" in 148 [\\/]* | ?:[\\/]*) target="$2";; 149 *) target="../$2";; 150 esac 151 152 # We do not want to overwrite a header file if it hasn't 153 # changed. This avoid useless recompilations. However the 154 # parser itself (the first file) should always be updated, 155 # because it is the destination of the .y.c rule in the 156 # Makefile. Divert the output of all other files to a temporary 157 # file so we can compare them to existing versions. 158 if test $first = no; then 159 realtarget="$target" 160 target="tmp-`echo $target | sed s/.*[\\/]//g`" 161 fi 162 # Edit out `#line' or `#' directives. 163 # 164 # We don't want the resulting debug information to point at 165 # an absolute srcdir; it is better for it to just mention the 166 # .y file with no path. 167 # 168 # We want to use the real output file name, not yy.lex.c for 169 # instance. 170 # 171 # We want the include guards to be adjusted too. 172 FROM=`echo "$from" | sed \ 173 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 174 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 175 TARGET=`echo "$2" | sed \ 176 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 177 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 178 179 sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \ 180 -e "s,$FROM,$TARGET," "$from" >"$target" || status=$? 181 182 # Check whether header files must be updated. 183 if test $first = no; then 184 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then 185 echo "$2" is unchanged 186 rm -f "$target" 187 else 188 echo updating "$2" 189 mv -f "$target" "$realtarget" 190 fi 191 fi 192 else 193 # A missing file is only an error for the first file. This 194 # is a blatant hack to let us support using "yacc -d". If -d 195 # is not specified, we don't want an error when the header 196 # file is "missing". 197 if test $first = yes; then 198 status=1 199 fi 200 fi 201 shift 202 shift 203 first=no 204 done 205else 206 status=$? 207fi 208 209# Remove the directory. 210cd .. 211rm -rf $dirname 212 213exit $status 214 215# Local Variables: 216# mode: shell-script 217# sh-indentation: 2 218# eval: (add-hook 'write-file-hooks 'time-stamp) 219# time-stamp-start: "scriptversion=" 220# time-stamp-format: "%:y-%02m-%02d.%02H" 221# time-stamp-end: "$" 222# End: 223