config/ylwrap
changeset 375 7a11f9e9e703
parent 353 17bffb57a8c5
equal deleted inserted replaced
349:b826f13c260e 375:7a11f9e9e703
       
     1 #! /bin/sh
       
     2 # ylwrap - wrapper for lex/yacc invocations.
       
     3 
       
     4 scriptversion=2005-05-14.22
       
     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@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: