summaryrefslogtreecommitdiff
path: root/ylwrap
blob: 71e522500a1452d3a781e3d5d5759b244190af14 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
#! /bin/sh
# ylwrap - wrapper for lex/yacc invocations.
#
# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002 Free Software
# Foundation, Inc.
#
# Written by Tom Tromey <tromey@cygnus.com>.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# Usage:
#     ylwrap INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
# * INPUT is the input file
# * OUTPUT is file PROG generates
# * DESIRED is file we actually want
# * PROGRAM is program to run
# * ARGS are passed to PROG
# Any number of OUTPUT,DESIRED pairs may be used.

# The input.
input="$1"
shift
case "$input" in
 [\\/]* | ?:[\\/]*)
    # Absolute path; do nothing.
    ;;
 *)
    # Relative path.  Make it absolute.
    input="`pwd`/$input"
    ;;
esac

pairlist=
while test "$#" -ne 0; do
   if test "$1" = "--"; then
      shift
      break
   fi
   pairlist="$pairlist $1"
   shift
done

# The program to run.
prog="$1"
shift
# Make any relative path in $prog absolute.
case "$prog" in
 [\\/]* | ?:[\\/]*) ;;
 *[\\/]*) prog="`pwd`/$prog" ;;
esac

# FIXME: add hostname here for parallel makes that run commands on
# other machines.  But that might take us over the 14-char limit.
dirname=ylwrap$$
trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
mkdir $dirname || exit 1

cd $dirname

case $# in
 0) $prog "$input" ;;
 *) $prog "$@" "$input" ;;
esac
status=$?

if test $status -eq 0; then
   set X $pairlist
   shift
   first=yes
   # Since DOS filename conventions don't allow two dots,
   # the DOS version of Bison writes out y_tab.c instead of y.tab.c
   # and y_tab.h instead of y.tab.h. Test to see if this is the case.
   y_tab_nodot="no"
   if test -f y_tab.c || test -f y_tab.h; then
      y_tab_nodot="yes"
   fi

   # The directory holding the input.
   input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
   # Quote $INPUT_DIR so we can use it in a regexp.
   # FIXME: really we should care about more than `.' and `\'.
   input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`

   while test "$#" -ne 0; do
      from="$1"
      # Handle y_tab.c and y_tab.h output by DOS
      if test $y_tab_nodot = "yes"; then
	 if test $from = "y.tab.c"; then
	    from="y_tab.c"
	 else
	    if test $from = "y.tab.h"; then
	       from="y_tab.h"
	    fi
	 fi
      fi
      if test -f "$from"; then
         # If $2 is an absolute path name, then just use that,
         # otherwise prepend `../'.
         case "$2" in
	   [\\/]* | ?:[\\/]*) target="$2";;
	   *) target="../$2";;
	 esac

	 # Edit out `#line' or `#' directives.
	 #
	 # We don't want the resulting debug information to point at
	 # an absolute srcdir; it is better for it to just mention the
	 # .y file with no path.
	 #
	 # We want to use the real output file name, not yy.lex.c for
	 # instance.
	 #
	 # We want the include guards to be adjusted too.
	 FROM=`echo "$from" | sed \
                 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
                 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
	 TARGET=`echo "$2" | sed \
                 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
                 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
         sed "/^#/{s,$input_rx,,;s,$from,$2,;s,$FORM,$TO,;}" "$from" >"$target" ||
            status=$?
      else
	 # A missing file is only an error for the first file.  This
	 # is a blatant hack to let us support using "yacc -d".  If -d
	 # is not specified, we don't want an error when the header
	 # file is "missing".
	 if test $first = yes; then
	    status=1
	 fi
      fi
      shift
      shift
      first=no
   done
else
   status=$?
fi

# Remove the directory.
cd ..
rm -rf $dirname

exit $status