share/automake-1.7/ylwrap

   1 #! /bin/sh
   2 # ylwrap - wrapper for lex/yacc invocations.
   3 #
   4 # Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002 Free Software
   5 # Foundation, Inc.
   6 #
   7 # Written by Tom Tromey <tromey@cygnus.com>.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2, or (at your option)
  12 # any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program; if not, write to the Free Software
  21 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  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 # Usage:
  29 #     ylwrap INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
  30 # * INPUT is the input file
  31 # * OUTPUT is file PROG generates
  32 # * DESIRED is file we actually want
  33 # * PROGRAM is program to run
  34 # * ARGS are passed to PROG
  35 # Any number of OUTPUT,DESIRED pairs may be used.
  36
  37 # The input.
  38 input="$1"
  39 shift
  40 case "$input" in
  41  [\\/]* | ?:[\\/]*)
  42     # Absolute path; do nothing.
  43     ;;
  44  *)
  45     # Relative path.  Make it absolute.
  46     input="`pwd`/$input"
  47     ;;
  48 esac
  49
  50 pairlist=
  51 while test "$#" -ne 0; do
  52    if test "$1" = "--"; then
  53       shift
  54       break
  55    fi
  56    pairlist="$pairlist $1"
  57    shift
  58 done
  59
  60 # The program to run.
  61 prog="$1"
  62 shift
  63 # Make any relative path in $prog absolute.
  64 case "$prog" in
  65  [\\/]* | ?:[\\/]*) ;;
  66  *[\\/]*) prog="`pwd`/$prog" ;;
  67 esac
  68
  69 # FIXME: add hostname here for parallel makes that run commands on
  70 # other machines.  But that might take us over the 14-char limit.
  71 dirname=ylwrap$$
  72 trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
  73 mkdir $dirname || exit 1
  74
  75 cd $dirname
  76
  77 case $# in
  78  0) $prog "$input" ;;
  79  *) $prog "$@" "$input" ;;
  80 esac
  81 status=$?
  82
  83 if test $status -eq 0; then
  84    set X $pairlist
  85    shift
  86    first=yes
  87    # Since DOS filename conventions don't allow two dots,
  88    # the DOS version of Bison writes out y_tab.c instead of y.tab.c
  89    # and y_tab.h instead of y.tab.h. Test to see if this is the case.
  90    y_tab_nodot="no"
  91    if test -f y_tab.c || test -f y_tab.h; then
  92       y_tab_nodot="yes"
  93    fi
  94
  95    # The directory holding the input.
  96    input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
  97    # Quote $INPUT_DIR so we can use it in a regexp.
  98    # FIXME: really we should care about more than `.' and `\'.
  99    input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
 100
 101    while test "$#" -ne 0; do
 102       from="$1"
 103       # Handle y_tab.c and y_tab.h output by DOS
 104       if test $y_tab_nodot = "yes"; then
 105          if test $from = "y.tab.c"; then
 106             from="y_tab.c"
 107          else
 108             if test $from = "y.tab.h"; then
 109                from="y_tab.h"
 110             fi
 111          fi
 112       fi
 113       if test -f "$from"; then
 114          # If $2 is an absolute path name, then just use that,
 115          # otherwise prepend `../'.
 116          case "$2" in
 117            [\\/]* | ?:[\\/]*) target="$2";;
 118            *) target="../$2";;
 119          esac
 120
 121          # Edit out `#line' or `#' directives.
 122          #
 123          # We don't want the resulting debug information to point at
 124          # an absolute srcdir; it is better for it to just mention the
 125          # .y file with no path.
 126          #
 127          # We want to use the real output file name, not yy.lex.c for
 128          # instance.
 129          #
 130          # We want the include guards to be adjusted too.
 131          FROM=`echo "$from" | sed \
 132                  -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
 133                  -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
 134          TARGET=`echo "$2" | sed \
 135                  -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
 136                  -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
 137          sed "/^#/{s,$input_rx,,;s,$from,$2,;s,$FORM,$TO,;}" "$from" >"$target" ||
 138             status=$?
 139       else
 140          # A missing file is only an error for the first file.  This
 141          # is a blatant hack to let us support using "yacc -d".  If -d
 142          # is not specified, we don't want an error when the header
 143          # file is "missing".
 144          if test $first = yes; then
 145             status=1
 146          fi
 147       fi
 148       shift
 149       shift
 150       first=no
 151    done
 152 else
 153    status=$?
 154 fi
 155
 156 # Remove the directory.
 157 cd ..
 158 rm -rf $dirname
 159
 160 exit $status