1 #! /bin/sh 2 # ylwrap - wrapper for lex/yacc invocations. 3 4 scriptversion=2013-01-12.17; # UTC 5 6 # Copyright (C) 1996-2013 Free Software Foundation, Inc. 7 # 8 # Written by Tom Tromey <tromey (at] 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 (at] gnu.org> or send patches to 30 # <automake-patches (at] gnu.org>. 31 32 get_dirname () 33 { 34 case $1 in 35 */*|*\\*) printf '%s\n' "$1" | sed -e 's|\([\\/]\)[^\\/]*$|\1|';; 36 # Otherwise, we want the empty string (not "."). 37 esac 38 } 39 40 # guard FILE 41 # ---------- 42 # The CPP macro used to guard inclusion of FILE. 43 guard () 44 { 45 printf '%s\n' "$1" \ 46 | sed \ 47 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \ 48 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g' \ 49 -e 's/__*/_/g' 50 } 51 52 # quote_for_sed [STRING] 53 # ---------------------- 54 # Return STRING (or stdin) quoted to be used as a sed pattern. 55 quote_for_sed () 56 { 57 case $# in 58 0) cat;; 59 1) printf '%s\n' "$1";; 60 esac \ 61 | sed -e 's|[][\\.*]|\\&|g' 62 } 63 64 case "$1" in 65 '') 66 echo "$0: No files given. Try '$0 --help' for more information." 1>&2 67 exit 1 68 ;; 69 --basedir) 70 basedir=$2 71 shift 2 72 ;; 73 -h|--h*) 74 cat <<\EOF 75 Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]... 76 77 Wrapper for lex/yacc invocations, renaming files as desired. 78 79 INPUT is the input file 80 OUTPUT is one file PROG generates 81 DESIRED is the file we actually want instead of OUTPUT 82 PROGRAM is program to run 83 ARGS are passed to PROG 84 85 Any number of OUTPUT,DESIRED pairs may be used. 86 87 Report bugs to <bug-automake@gnu.org>. 88 EOF 89 exit $? 90 ;; 91 -v|--v*) 92 echo "ylwrap $scriptversion" 93 exit $? 94 ;; 95 esac 96 97 98 # The input. 99 input=$1 100 shift 101 # We'll later need for a correct munging of "#line" directives. 102 input_sub_rx=`get_dirname "$input" | quote_for_sed` 103 case $input in 104 [\\/]* | ?:[\\/]*) 105 # Absolute path; do nothing. 106 ;; 107 *) 108 # Relative path. Make it absolute. 109 input=`pwd`/$input 110 ;; 111 esac 112 input_rx=`get_dirname "$input" | quote_for_sed` 113 114 # Since DOS filename conventions don't allow two dots, 115 # the DOS version of Bison writes out y_tab.c instead of y.tab.c 116 # and y_tab.h instead of y.tab.h. Test to see if this is the case. 117 y_tab_nodot=false 118 if test -f y_tab.c || test -f y_tab.h; then 119 y_tab_nodot=true 120 fi 121 122 # The parser itself, the first file, is the destination of the .y.c 123 # rule in the Makefile. 124 parser=$1 125 126 # A sed program to s/FROM/TO/g for all the FROM/TO so that, for 127 # instance, we rename #include "y.tab.h" into #include "parse.h" 128 # during the conversion from y.tab.c to parse.c. 129 sed_fix_filenames= 130 131 # Also rename header guards, as Bison 2.7 for instance uses its header 132 # guard in its implementation file. 133 sed_fix_header_guards= 134 135 while test $# -ne 0; do 136 if test x"$1" = x"--"; then 137 shift 138 break 139 fi 140 from=$1 141 # Handle y_tab.c and y_tab.h output by DOS 142 if $y_tab_nodot; then 143 case $from in 144 "y.tab.c") from=y_tab.c;; 145 "y.tab.h") from=y_tab.h;; 146 esac 147 fi 148 shift 149 to=$1 150 shift 151 sed_fix_filenames="${sed_fix_filenames}s|"`quote_for_sed "$from"`"|$to|g;" 152 sed_fix_header_guards="${sed_fix_header_guards}s|"`guard "$from"`"|"`guard "$to"`"|g;" 153 done 154 155 # The program to run. 156 prog=$1 157 shift 158 # Make any relative path in $prog absolute. 159 case $prog in 160 [\\/]* | ?:[\\/]*) ;; 161 *[\\/]*) prog=`pwd`/$prog ;; 162 esac 163 164 prefix=`echo $input | sed \ 165 -e 's,^.*/,,g' \ 166 -e 's/_gram.[yl]$/_/g' \ 167 -e 's/_lex.[yl]$/_/g' \ 168 -e 's/_parse.[yl]$/_/g' \ 169 -e 's/_tok.[yl]$/_/g'` 170 171 case "$prog" in 172 *lex) 173 flags="-P${prefix}" 174 out="mv lex.$prefix.c lex.yy.c" 175 ;; 176 yacc|bison) 177 flags="-p $prefix";; 178 esac 179 180 dirname=ylwrap$$ 181 do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret' 182 trap "ret=129; $do_exit" 1 183 trap "ret=130; $do_exit" 2 184 trap "ret=141; $do_exit" 13 185 trap "ret=143; $do_exit" 15 186 mkdir $dirname || exit 1 187 188 cd $dirname 189 190 case $# in 191 0) "$prog" $flags "$input" ;; 192 *) "$prog" $flags "$@" "$input" ;; 193 esac 194 ret=$? 195 if [ -n "$out" ]; then 196 eval $out 197 fi 198 199 if test $ret -eq 0; then 200 for from in * 201 do 202 to=`printf '%s\n' "$from" | sed "$sed_fix_filenames"` 203 if test -f "$from"; then 204 # If $2 is an absolute path name, then just use that, 205 # otherwise prepend '../'. 206 case $to in 207 [\\/]* | ?:[\\/]*) target=$to;; 208 *) target=../$to;; 209 esac 210 211 # Do not overwrite unchanged header files to avoid useless 212 # recompilations. Always update the parser itself: it is the 213 # destination of the .y.c rule in the Makefile. Divert the 214 # output of all other files to a temporary file so we can 215 # compare them to existing versions. 216 if test $from != $parser; then 217 realtarget=$target 218 target=tmp-`printf '%s\n' "$target" | sed 's|.*[\\/]||g'` 219 fi 220 221 # Munge "#line" or "#" directives. Don't let the resulting 222 # debug information point at an absolute srcdir. Use the real 223 # output file name, not yy.lex.c for instance. Adjust the 224 # include guards too. 225 sed -e "/^#/!b" \ 226 -e "s|$input_rx|$input_sub_rx|" \ 227 -e "$sed_fix_filenames" \ 228 -e "$sed_fix_header_guards" \ 229 "$from" >"$target" || ret=$? 230 231 # Check whether files must be updated. 232 if test "$from" != "$parser"; then 233 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then 234 echo "$to is unchanged" 235 rm -f "$target" 236 else 237 echo "updating $to" 238 mv -f "$target" "$realtarget" 239 fi 240 fi 241 else 242 # A missing file is only an error for the parser. This is a 243 # blatant hack to let us support using "yacc -d". If -d is not 244 # specified, don't fail when the header file is "missing". 245 if test "$from" = "$parser"; then 246 ret=1 247 fi 248 fi 249 done 250 fi 251 252 # Remove the directory. 253 cd .. 254 rm -rf $dirname 255 256 exit $ret 257 258 # Local Variables: 259 # mode: shell-script 260 # sh-indentation: 2 261 # eval: (add-hook 'write-file-hooks 'time-stamp) 262 # time-stamp-start: "scriptversion=" 263 # time-stamp-format: "%:y-%02m-%02d.%02H" 264 # time-stamp-time-zone: "UTC" 265 # time-stamp-end: "; # UTC" 266 # End: 267
Indexes created Tue Feb 24 08:35:24 UTC 2026