ylwrap revision 1.1
1 #! /bin/sh 2 # ylwrap - wrapper for lex/yacc invocations. 3 4 scriptversion=2005-02-02.22 5 6 # Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005 7 # Free Software Foundation, Inc. 8 # 9 # Written by Tom Tromey <tromey (at] 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 (at] gnu.org> or send patches to 32 # <automake-patches (at] gnu.org>. 33 34 case "$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 45 Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]... 46 47 Wrapper 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 55 Any number of OUTPUT,DESIRED pairs may be used. 56 57 This wrapper will prefix each conflicting yacc/lex symbol with a unique name 58 produced from INPUT. For example, if INPUT is foo_parse.y, then yyparse() 59 becomes foo_parse(). This requires that both your .l and corresponding .y 60 files have the same prefix (e.g., foo_parse.y and foo_tok.l). 61 62 Report bugs to <bug-automake (at] gnu.org>. 63 EOF 64 exit $? 65 ;; 66 -v|--v*) 67 echo "ylwrap $scriptversion" 68 exit $? 69 ;; 70 esac 71 72 73 # The input. 74 input="$1" 75 shift 76 case "$input" in 77 [\\/]* | ?:[\\/]*) 78 # Absolute path; do nothing. 79 ;; 80 *) 81 # Relative path. Make it absolute. 82 input="`pwd`/$input" 83 ;; 84 esac 85 86 pairlist= 87 while test "$#" -ne 0; do 88 if test "$1" = "--"; then 89 shift 90 break 91 fi 92 pairlist="$pairlist $1" 93 shift 94 done 95 96 # The program to run. 97 prog="$1" 98 shift 99 # Make any relative path in $prog absolute. 100 case "$prog" in 101 [\\/]* | ?:[\\/]*) ;; 102 *[\\/]*) prog="`pwd`/$prog" ;; 103 esac 104 105 # FIXME: add hostname here for parallel makes that run commands on 106 # other machines. But that might take us over the 14-char limit. 107 dirname=ylwrap$$ 108 trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15 109 mkdir $dirname || exit 1 110 111 cd $dirname 112 113 case $# in 114 0) $prog "$input" ;; 115 *) $prog "$@" "$input" ;; 116 esac 117 ret=$? 118 119 if test $ret -eq 0; then 120 set X $pairlist 121 shift 122 first=yes 123 # Since DOS filename conventions don't allow two dots, 124 # the DOS version of Bison writes out y_tab.c instead of y.tab.c 125 # and y_tab.h instead of y.tab.h. Test to see if this is the case. 126 y_tab_nodot="no" 127 if test -f y_tab.c || test -f y_tab.h; then 128 y_tab_nodot="yes" 129 fi 130 131 # The directory holding the input. 132 input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'` 133 # Quote $INPUT_DIR so we can use it in a regexp. 134 # FIXME: really we should care about more than `.' and `\'. 135 input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'` 136 137 while test "$#" -ne 0; do 138 from="$1" 139 # Handle y_tab.c and y_tab.h output by DOS 140 if test $y_tab_nodot = "yes"; then 141 if test $from = "y.tab.c"; then 142 from="y_tab.c" 143 else 144 if test $from = "y.tab.h"; then 145 from="y_tab.h" 146 fi 147 fi 148 fi 149 if test -f "$from"; then 150 # If $2 is an absolute path name, then just use that, 151 # otherwise prepend `../'. 152 case "$2" in 153 [\\/]* | ?:[\\/]*) target="$2";; 154 *) target="../$2";; 155 esac 156 157 # We do not want to overwrite a header file if it hasn't 158 # changed. This avoid useless recompilations. However the 159 # parser itself (the first file) should always be updated, 160 # because it is the destination of the .y.c rule in the 161 # Makefile. Divert the output of all other files to a temporary 162 # file so we can compare them to existing versions. 163 if test $first = no; then 164 realtarget="$target" 165 target="tmp-`echo $target | sed s/.*[\\/]//g`" 166 fi 167 # Edit out `#line' or `#' directives. 168 # 169 # We don't want the resulting debug information to point at 170 # an absolute srcdir; it is better for it to just mention the 171 # .y file with no path. 172 # 173 # We want to use the real output file name, not yy.lex.c for 174 # instance. 175 # 176 # We want the include guards to be adjusted too. 177 FROM=`echo "$from" | sed \ 178 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 179 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 180 TARGET=`echo "$2" | sed \ 181 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ 182 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` 183 prefix=`echo $input | sed \ 184 -e 's,^.*/,,g' \ 185 -e 's/_parse.[yl]$/_/g' \ 186 -e 's/_tok.[yl]$/_/g'` 187 188 case $prefix in 189 *.y) 190 code_prefix="$(basename $prefix _gram.y)_yy";; 191 *.l) 192 code_prefix="$(basename $prefix _lex.l)_yy";; 193 *) 194 code_prefix="$prefix";; 195 esac 196 sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \ 197 -e "s,$FROM,$TARGET," "$from" | sed "s/yy/$code_prefix/g" > "$target" || ret=$? 198 199 # Check whether header files must be updated. 200 if test $first = no; then 201 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then 202 echo "$2" is unchanged 203 rm -f "$target" 204 else 205 echo updating "$2" 206 mv -f "$target" "$realtarget" 207 fi 208 fi 209 else 210 # A missing file is only an error for the first file. This 211 # is a blatant hack to let us support using "yacc -d". If -d 212 # is not specified, we don't want an error when the header 213 # file is "missing". 214 if test $first = yes; then 215 ret=1 216 fi 217 fi 218 shift 219 shift 220 first=no 221 done 222 else 223 ret=$? 224 fi 225 226 # Remove the directory. 227 cd .. 228 rm -rf $dirname 229 230 exit $ret 231 232 # Local Variables: 233 # mode: shell-script 234 # sh-indentation: 2 235 # eval: (add-hook 'write-file-hooks 'time-stamp) 236 # time-stamp-start: "scriptversion=" 237 # time-stamp-format: "%:y-%02m-%02d.%02H" 238 # time-stamp-end: "$" 239 # End: 240
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