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| 1 #! /bin/sh |
| 2 # ylwrap - wrapper for lex/yacc invocations. |
| 3 |
| 4 scriptversion=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 |
| 35 case "$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 |
| 46 Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]... |
| 47 |
| 48 Wrapper 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 |
| 56 Any number of OUTPUT,DESIRED pairs may be used. |
| 57 |
| 58 Report bugs to <bug-automake@gnu.org>. |
| 59 EOF |
| 60 exit $? |
| 61 ;; |
| 62 -v|--v*) |
| 63 echo "ylwrap $scriptversion" |
| 64 exit $? |
| 65 ;; |
| 66 esac |
| 67 |
| 68 |
| 69 # The input. |
| 70 input="$1" |
| 71 shift |
| 72 case "$input" in |
| 73 [\\/]* | ?:[\\/]*) |
| 74 # Absolute path; do nothing. |
| 75 ;; |
| 76 *) |
| 77 # Relative path. Make it absolute. |
| 78 input="`pwd`/$input" |
| 79 ;; |
| 80 esac |
| 81 |
| 82 pairlist= |
| 83 while test "$#" -ne 0; do |
| 84 if test "$1" = "--"; then |
| 85 shift |
| 86 break |
| 87 fi |
| 88 pairlist="$pairlist $1" |
| 89 shift |
| 90 done |
| 91 |
| 92 # The program to run. |
| 93 prog="$1" |
| 94 shift |
| 95 # Make any relative path in $prog absolute. |
| 96 case "$prog" in |
| 97 [\\/]* | ?:[\\/]*) ;; |
| 98 *[\\/]*) prog="`pwd`/$prog" ;; |
| 99 esac |
| 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. |
| 103 dirname=ylwrap$$ |
| 104 trap "cd '`pwd`'; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15 |
| 105 mkdir $dirname || exit 1 |
| 106 |
| 107 cd $dirname |
| 108 |
| 109 case $# in |
| 110 0) "$prog" "$input" ;; |
| 111 *) "$prog" "$@" "$input" ;; |
| 112 esac |
| 113 ret=$? |
| 114 |
| 115 if 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 "$2" | sed \ |
| 177 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
| 178 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
| 179 |
| 180 sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \ |
| 181 -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$? |
| 182 |
| 183 # Check whether header files must be updated. |
| 184 if test $first = no; then |
| 185 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then |
| 186 echo "$2" is unchanged |
| 187 rm -f "$target" |
| 188 else |
| 189 echo updating "$2" |
| 190 mv -f "$target" "$realtarget" |
| 191 fi |
| 192 fi |
| 193 else |
| 194 # A missing file is only an error for the first file. This |
| 195 # is a blatant hack to let us support using "yacc -d". If -d |
| 196 # is not specified, we don't want an error when the header |
| 197 # file is "missing". |
| 198 if test $first = yes; then |
| 199 ret=1 |
| 200 fi |
| 201 fi |
| 202 shift |
| 203 shift |
| 204 first=no |
| 205 done |
| 206 else |
| 207 ret=$? |
| 208 fi |
| 209 |
| 210 # Remove the directory. |
| 211 cd .. |
| 212 rm -rf $dirname |
| 213 |
| 214 exit $ret |
| 215 |
| 216 # Local Variables: |
| 217 # mode: shell-script |
| 218 # sh-indentation: 2 |
| 219 # eval: (add-hook 'write-file-hooks 'time-stamp) |
| 220 # time-stamp-start: "scriptversion=" |
| 221 # time-stamp-format: "%:y-%02m-%02d.%02H" |
| 222 # time-stamp-end: "$" |
| 223 # End: |
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