1999-09-12 Donn Terry <donn@interix.com>
[binutils.git] / ylwrap
blob2288ccde3ac14b2e968b92d2260c130e8becebee
1 #! /bin/sh
2 # ylwrap - wrapper for lex/yacc invocations.
3 # Copyright (C) 1996, 1997 Free Software Foundation, Inc.
4 # Written by Tom Tromey <tromey@cygnus.com>.
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.
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.
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.
20 # Usage:
21 # ylwrap PROGRAM INPUT [OUTPUT DESIRED]... -- [ARGS]...
22 # * PROGRAM is program to run.
23 # * INPUT is the input file
24 # * OUTPUT is file PROG generates
25 # * DESIRED is file we actually want
26 # * ARGS are passed to PROG
27 # Any number of OUTPUT,DESIRED pairs may be used.
29 # The program to run.
30 prog="$1"
31 shift
32 # Make any relative path in $prog absolute.
33 case "$prog" in
34 /* | [A-Za-z]:\\*) ;;
35 */*) prog="`pwd`/$prog" ;;
36 esac
38 # The input.
39 input="$1"
40 shift
41 case "$input" in
42 /* | [A-Za-z]:\\*)
43 # Absolute path; do nothing.
46 # Relative path. Make it absolute. Why? Because otherwise any
47 # debugging info in the generated file will point to the wrong
48 # place. This is really gross.
49 input="`pwd`/$input"
51 esac
53 # We don't want to use the absolute path if the input in the current
54 # directory like when making a tar ball.
55 input_base=`echo $input | sed -e 's|.*/||'`
56 if test -f $input_base && cmp $input_base $input >/dev/null 2>&1; then
57 input=$input_base
60 pairlist=
61 while test "$#" -ne 0; do
62 if test "$1" = "--"; then
63 shift
64 break
66 pairlist="$pairlist $1"
67 shift
68 done
70 # FIXME: add hostname here for parallel makes that run commands on
71 # other machines. But that might take us over the 14-char limit.
72 dirname=ylwrap$$
73 trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
74 mkdir $dirname || exit 1
76 cd $dirname
77 case "$input" in
78 /* | [A-Za-z]:\\*)
79 # Absolute path; do nothing.
82 # Make a symbolic link, hard link or hardcopy.
83 ln -s ../"$input" . > /dev/null 2>&1 || ln ../"$input" . > /dev/null 2>&1 || cp ../"$input" .
85 esac
86 $prog ${1+"$@"} "$input"
87 status=$?
89 if test $status -eq 0; then
90 set X $pairlist
91 shift
92 first=yes
93 while test "$#" -ne 0; do
94 if test -f "$1"; then
95 # If $2 is an absolute path name, then just use that,
96 # otherwise prepend `../'.
97 case "$2" in
98 /* | [A-Za-z]:\\*) target="$2";;
99 *) target="../$2";;
100 esac
101 mv "$1" "$target" || status=$?
102 else
103 # A missing file is only an error for the first file. This
104 # is a blatant hack to let us support using "yacc -d". If -d
105 # is not specified, we don't want an error when the header
106 # file is "missing".
107 if test $first = yes; then
108 status=1
111 shift
112 shift
113 first=no
114 done
115 else
116 status=$?
119 # Remove the directory.
120 cd ..
121 rm -rf $dirname
123 exit $status