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      1 #! /bin/sh
      2 # ylwrap - wrapper for lex/yacc invocations.
      3 # Copyright 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
      4 # Written by Tom Tromey <tromey (at] cygnus.com>.
      5 #
      6 # This program is free software; you can redistribute it and/or modify
      7 # it under the terms of the GNU General Public License as published by
      8 # the Free Software Foundation; either version 2, or (at your option)
      9 # any later version.
     10 #
     11 # This program is distributed in the hope that it will be useful,
     12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
     13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     14 # GNU General Public License for more details.
     15 #
     16 # You should have received a copy of the GNU General Public License
     17 # along with this program; if not, write to the Free Software
     18 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
     19 
     20 # As a special exception to the GNU General Public License, if you
     21 # distribute this file as part of a program that contains a
     22 # configuration script generated by Autoconf, you may include it under
     23 # the same distribution terms that you use for the rest of that program.
     24 
     25 # Usage:
     26 #     ylwrap INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
     27 # * INPUT is the input file
     28 # * OUTPUT is file PROG generates
     29 # * DESIRED is file we actually want
     30 # * PROGRAM is program to run
     31 # * ARGS are passed to PROG
     32 # Any number of OUTPUT,DESIRED pairs may be used.
     33 
     34 # The input.
     35 input="$1"
     36 shift
     37 case "$input" in
     38  [\\/]* | ?:[\\/]*)
     39     # Absolute path; do nothing.
     40     ;;
     41  *)
     42     # Relative path.  Make it absolute.
     43     input="`pwd`/$input"
     44     ;;
     45 esac
     46 
     47 # The directory holding the input.
     48 input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
     49 # Quote $INPUT_DIR so we can use it in a regexp.
     50 # FIXME: really we should care about more than `.' and `\'.
     51 input_rx=`echo "$input_dir" | sed -e 's,\\\\,\\\\\\\\,g' -e 's,\\.,\\\\.,g'`
     52 
     53 echo "got $input_rx"
     54 
     55 pairlist=
     56 while test "$#" -ne 0; do
     57    if test "$1" = "--"; then
     58       shift
     59       break
     60    fi
     61    pairlist="$pairlist $1"
     62    shift
     63 done
     64 
     65 # The program to run.
     66 prog="$1"
     67 shift
     68 # Make any relative path in $prog absolute.
     69 case "$prog" in
     70  [\\/]* | ?:[\\/]*) ;;
     71  *[\\/]*) prog="`pwd`/$prog" ;;
     72 esac
     73 
     74 # FIXME: add hostname here for parallel makes that run commands on
     75 # other machines.  But that might take us over the 14-char limit.
     76 dirname=ylwrap$$
     77 trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
     78 mkdir $dirname || exit 1
     79 
     80 cd $dirname
     81 
     82 $prog ${1+"$@"} "$input"
     83 status=$?
     84 
     85 if test $status -eq 0; then
     86    set X $pairlist
     87    shift
     88    first=yes
     89    # Since DOS filename conventions don't allow two dots,
     90    # the DOS version of Bison writes out y_tab.c instead of y.tab.c
     91    # and y_tab.h instead of y.tab.h. Test to see if this is the case.
     92    y_tab_nodot="no"
     93    if test -f y_tab.c || test -f y_tab.h; then
     94       y_tab_nodot="yes"
     95    fi
     96 
     97    while test "$#" -ne 0; do
     98       from="$1"
     99       # Handle y_tab.c and y_tab.h output by DOS
    100       if test $y_tab_nodot = "yes"; then
    101 	 if test $from = "y.tab.c"; then
    102 	    from="y_tab.c"
    103 	 else
    104 	    if test $from = "y.tab.h"; then
    105 	       from="y_tab.h"
    106 	    fi
    107 	 fi
    108       fi
    109       if test -f "$from"; then
    110          # If $2 is an absolute path name, then just use that,
    111          # otherwise prepend `../'.
    112          case "$2" in
    113 	   [\\/]* | ?:[\\/]*) target="$2";;
    114 	   *) target="../$2";;
    115 	 esac
    116 
    117 	 # Edit out `#line' or `#' directives.  We don't want the
    118 	 # resulting debug information to point at an absolute srcdir;
    119 	 # it is better for it to just mention the .y file with no
    120 	 # path.
    121 	 sed -e "/^#/ s,$input_rx,," "$from" > "$target" || status=$?
    122       else
    123 	 # A missing file is only an error for the first file.  This
    124 	 # is a blatant hack to let us support using "yacc -d".  If -d
    125 	 # is not specified, we don't want an error when the header
    126 	 # file is "missing".
    127 	 if test $first = yes; then
    128 	    status=1
    129 	 fi
    130       fi
    131       shift
    132       shift
    133       first=no
    134    done
    135 else
    136    status=$?
    137 fi
    138 
    139 # Remove the directory.
    140 cd ..
    141 rm -rf $dirname
    142 
    143 exit $status
    144