1#! /bin/sh 2# ylwrap - wrapper for lex/yacc invocations. 3 4scriptversion=2011-08-25.18; # UTC 5 6# Copyright (C) 1996-2012 Free Software Foundation, Inc. 7# 8# Written by Tom Tromey <tromey@cygnus.com>. 9# 10# This program is free software; you can redistribute it and/or modify 11# it under the terms of the GNU General Public License as published by 12# the Free Software Foundation; either version 2, or (at your option) 13# any later version. 14# 15# This program is distributed in the hope that it will be useful, 16# but WITHOUT ANY WARRANTY; without even the implied warranty of 17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18# GNU General Public License for more details. 19# 20# You should have received a copy of the GNU General Public License 21# along with this program. If not, see <http://www.gnu.org/licenses/>. 22 23# As a special exception to the GNU General Public License, if you 24# distribute this file as part of a program that contains a 25# configuration script generated by Autoconf, you may include it under 26# the same distribution terms that you use for the rest of that program. 27 28# This file is maintained in Automake, please report 29# bugs to <bug-automake@gnu.org> or send patches to 30# <automake-patches@gnu.org>. 31 32case "$1" in 33 '') 34 echo "$0: No files given. Try '$0 --help' for more information." 1>&2 35 exit 1 36 ;; 37 --basedir) 38 basedir=$2 39 shift 2 40 ;; 41 -h|--h*) 42 cat <<\EOF 43Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]... 44 45Wrapper for lex/yacc invocations, renaming files as desired. 46 47 INPUT is the input file 48 OUTPUT is one file PROG generates 49 DESIRED is the file we actually want instead of OUTPUT 50 PROGRAM is program to run 51 ARGS are passed to PROG 52 53Any number of OUTPUT,DESIRED pairs may be used. 54 55Report bugs to <bug-automake@gnu.org>. 56EOF 57 exit $? 58 ;; 59 -v|--v*) 60 echo "ylwrap $scriptversion" 61 exit $? 62 ;; 63esac 64 65get_dirname () 66{ 67 case $1 in 68 */*|*\\*) printf '%s\n' "$1" | sed -e 's,\([\\/]\)[^\\/]*$,\1,';; 69 # Otherwise, we want the empty string (not "."). 70 esac 71} 72 73quote_for_sed () 74{ 75 # FIXME: really we should care about more than '.' and '\'. 76 sed -e 's,[\\.],\\&,g' 77} 78 79# The input. 80input="$1" 81shift 82# We'll later need for a correct munging of "#line" directives. 83input_sub_rx=`get_dirname "$input" | quote_for_sed` 84case "$input" in 85 [\\/]* | ?:[\\/]*) 86 # Absolute path; do nothing. 87 ;; 88 *) 89 # Relative path. Make it absolute. 90 input="`pwd`/$input" 91 ;; 92esac 93 94pairlist= 95while test "$#" -ne 0; do 96 if test "$1" = "--"; then 97 shift 98 break 99 fi 100 pairlist="$pairlist $1" 101 shift 102done 103 104# The program to run. 105prog="$1" 106shift 107# Make any relative path in $prog absolute. 108case "$prog" in 109 [\\/]* | ?:[\\/]*) ;; 110 *[\\/]*) prog="`pwd`/$prog" ;; 111esac 112 113# FIXME: add hostname here for parallel makes that run commands on 114# other machines. But that might take us over the 14-char limit. 115dirname=ylwrap$$ 116do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret' 117trap "ret=129; $do_exit" 1 118trap "ret=130; $do_exit" 2 119trap "ret=141; $do_exit" 13 120trap "ret=143; $do_exit" 15 121mkdir $dirname || exit 1 122 123cd $dirname 124 125case $# in 126 0) "$prog" "$input" ;; 127 *) "$prog" "$@" "$input" ;; 128esac 129ret=$? 130 131if test $ret -eq 0; then 132 set X $pairlist 133 shift 134 first=yes 135 # Since DOS filename conventions don't allow two dots, 136 # the DOS version of Bison writes out y_tab.c instead of y.tab.c 137 # and y_tab.h instead of y.tab.h. Test to see if this is the case. 138 y_tab_nodot="no" 139 if test -f y_tab.c || test -f y_tab.h; then 140 y_tab_nodot="yes" 141 fi 142 143 input_rx=`get_dirname "$input" | quote_for_sed` 144 145 while test "$#" -ne 0; do 146 from="$1" 147 # Handle y_tab.c and y_tab.h output by DOS 148 if test $y_tab_nodot = "yes"; then 149 if test $from = "y.tab.c"; then 150 from="y_tab.c" 151 else 152 if test $from = "y.tab.h"; then 153 from="y_tab.h" 154 fi 155 fi 156 fi 157 if test -f "$from"; then 158 # If $2 is an absolute path name, then just use that, 159 # otherwise prepend '../'. 160 case "$2" in 161 [\\/]* | ?:[\\/]*) target="$2";; 162 *) target="../$2";; 163 esac 164 165 # We do not want to overwrite a header file if it hasn't 166 # changed. This avoid useless recompilations. However the 167 # parser itself (the first file) should always be updated, 168 # because it is the destination of the .y.c rule in the 169 # Makefile. Divert the output of all other files to a temporary 170 # file so we can compare them to existing versions. 171 if test $first = no; then 172 realtarget="$target" 173 target="tmp-`echo $target | sed s/.*[\\/]//g`" 174 fi 175 # Munge "#line" or "#" directives. 176 # We don't want the resulting debug information to point at 177 # an absolute srcdir. 178 # We want to use the real output file name, not yy.lex.c for 179 # instance. 180 # We want the include guards to be adjusted too. 181 FROM=`echo "$from" | sed \ 182 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 183 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 184 TARGET=`echo "$2" | sed \ 185 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 186 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 187 188 sed -e "/^#/!b" -e "s,$input_rx,$input_sub_rx," -e "s,$from,$2," \ 189 -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$? 190 191 # Check whether header files must be updated. 192 if test $first = no; then 193 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then 194 echo "$2" is unchanged 195 rm -f "$target" 196 else 197 echo updating "$2" 198 mv -f "$target" "$realtarget" 199 fi 200 fi 201 else 202 # A missing file is only an error for the first file. This 203 # is a blatant hack to let us support using "yacc -d". If -d 204 # is not specified, we don't want an error when the header 205 # file is "missing". 206 if test $first = yes; then 207 ret=1 208 fi 209 fi 210 shift 211 shift 212 first=no 213 done 214else 215 ret=$? 216fi 217 218# Remove the directory. 219cd .. 220rm -rf $dirname 221 222exit $ret 223 224# Local Variables: 225# mode: shell-script 226# sh-indentation: 2 227# eval: (add-hook 'write-file-hooks 'time-stamp) 228# time-stamp-start: "scriptversion=" 229# time-stamp-format: "%:y-%02m-%02d.%02H" 230# time-stamp-time-zone: "UTC" 231# time-stamp-end: "; # UTC" 232# End: 233