1#! /bin/sh 2# ylwrap - wrapper for lex/yacc invocations. 3 4scriptversion=2007-11-22.22 5 6# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005, 7# 2007 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., 51 Franklin Street, Fifth Floor, Boston, MA 24# 02110-1301, USA. 25 26# As a special exception to the GNU General Public License, if you 27# distribute this file as part of a program that contains a 28# configuration script generated by Autoconf, you may include it under 29# the same distribution terms that you use for the rest of that program. 30 31# This file is maintained in Automake, please report 32# bugs to <bug-automake@gnu.org> or send patches to 33# <automake-patches@gnu.org>. 34 35case "$1" in 36 '') 37 echo "$0: No files given. Try \`$0 --help' for more information." 1>&2 38 exit 1 39 ;; 40 --basedir) 41 basedir=$2 42 shift 2 43 ;; 44 -h|--h*) 45 cat <<\EOF 46Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]... 47 48Wrapper for lex/yacc invocations, renaming files as desired. 49 50 INPUT is the input file 51 OUTPUT is one file PROG generates 52 DESIRED is the file we actually want instead of OUTPUT 53 PROGRAM is program to run 54 ARGS are passed to PROG 55 56Any number of OUTPUT,DESIRED pairs may be used. 57 58Report bugs to <bug-automake@gnu.org>. 59EOF 60 exit $? 61 ;; 62 -v|--v*) 63 echo "ylwrap $scriptversion" 64 exit $? 65 ;; 66esac 67 68 69# The input. 70input="$1" 71shift 72case "$input" in 73 [\\/]* | ?:[\\/]*) 74 # Absolute path; do nothing. 75 ;; 76 *) 77 # Relative path. Make it absolute. 78 input="`pwd`/$input" 79 ;; 80esac 81 82pairlist= 83while test "$#" -ne 0; do 84 if test "$1" = "--"; then 85 shift 86 break 87 fi 88 pairlist="$pairlist $1" 89 shift 90done 91 92# The program to run. 93prog="$1" 94shift 95# Make any relative path in $prog absolute. 96case "$prog" in 97 [\\/]* | ?:[\\/]*) ;; 98 *[\\/]*) prog="`pwd`/$prog" ;; 99esac 100 101# FIXME: add hostname here for parallel makes that run commands on 102# other machines. But that might take us over the 14-char limit. 103dirname=ylwrap$$ 104trap "cd '`pwd`'; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15 105mkdir $dirname || exit 1 106 107cd $dirname 108 109case $# in 110 0) "$prog" "$input" ;; 111 *) "$prog" "$@" "$input" ;; 112esac 113ret=$? 114 115if test $ret -eq 0; then 116 set X $pairlist 117 shift 118 first=yes 119 # Since DOS filename conventions don't allow two dots, 120 # the DOS version of Bison writes out y_tab.c instead of y.tab.c 121 # and y_tab.h instead of y.tab.h. Test to see if this is the case. 122 y_tab_nodot="no" 123 if test -f y_tab.c || test -f y_tab.h; then 124 y_tab_nodot="yes" 125 fi 126 127 # The directory holding the input. 128 input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'` 129 # Quote $INPUT_DIR so we can use it in a regexp. 130 # FIXME: really we should care about more than `.' and `\'. 131 input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'` 132 133 while test "$#" -ne 0; do 134 from="$1" 135 # Handle y_tab.c and y_tab.h output by DOS 136 if test $y_tab_nodot = "yes"; then 137 if test $from = "y.tab.c"; then 138 from="y_tab.c" 139 else 140 if test $from = "y.tab.h"; then 141 from="y_tab.h" 142 fi 143 fi 144 fi 145 if test -f "$from"; then 146 # If $2 is an absolute path name, then just use that, 147 # otherwise prepend `../'. 148 case "$2" in 149 [\\/]* | ?:[\\/]*) target="$2";; 150 *) target="../$2";; 151 esac 152 153 # We do not want to overwrite a header file if it hasn't 154 # changed. This avoid useless recompilations. However the 155 # parser itself (the first file) should always be updated, 156 # because it is the destination of the .y.c rule in the 157 # Makefile. Divert the output of all other files to a temporary 158 # file so we can compare them to existing versions. 159 if test $first = no; then 160 realtarget="$target" 161 target="tmp-`echo $target | sed s/.*[\\/]//g`" 162 fi 163 # Edit out `#line' or `#' directives. 164 # 165 # We don't want the resulting debug information to point at 166 # an absolute srcdir; it is better for it to just mention the 167 # .y file with no path. 168 # 169 # We want to use the real output file name, not yy.lex.c for 170 # instance. 171 # 172 # We want the include guards to be adjusted too. 173 FROM=`echo "$from" | sed \ 174 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 175 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 176 TARGET=`echo "$2" | sed \ 177 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 178 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 179 180 prefix=`echo $input | sed \ 181 -e 's,^.*/,,g' \ 182 -e 's/_parse.[yl]$/_/g' \ 183 -e 's/_tok.[yl]$/_/g'` 184 185 case $prefix in 186 *.y) 187 code_prefix="$(basename $prefix _gram.y)_yy";; 188 *.l) 189 code_prefix="$(basename $prefix _lex.l)_yy";; 190 *) 191 code_prefix="$prefix";; 192 esac 193 sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \ 194 -e "s,$FROM,$TARGET," "$from" | sed "s/yy/$code_prefix/g" > "$target" || ret=$? 195 196 # Check whether header files must be updated. 197 if test $first = no; then 198 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then 199 echo "$2" is unchanged 200 rm -f "$target" 201 else 202 echo updating "$2" 203 mv -f "$target" "$realtarget" 204 fi 205 fi 206 else 207 # A missing file is only an error for the first file. This 208 # is a blatant hack to let us support using "yacc -d". If -d 209 # is not specified, we don't want an error when the header 210 # file is "missing". 211 if test $first = yes; then 212 ret=1 213 fi 214 fi 215 shift 216 shift 217 first=no 218 done 219else 220 ret=$? 221fi 222 223# Remove the directory. 224cd .. 225rm -rf $dirname 226 227exit $ret 228 229# Local Variables: 230# mode: shell-script 231# sh-indentation: 2 232# eval: (add-hook 'write-file-hooks 'time-stamp) 233# time-stamp-start: "scriptversion=" 234# time-stamp-format: "%:y-%02m-%02d.%02H" 235# time-stamp-end: "$" 236# End: 237