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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
#! /bin/sh
# ylwrap - wrapper for lex/yacc invocations.
scriptversion=2018-03-07.03; # UTC
# Copyright (C) 1996-2018 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, see <https://www.gnu.org/licenses/>.
# 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.
# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.
get_dirname ()
{
case $1 in
*/*|*\\*) printf '%s\n' "$1" | sed -e 's|\([\\/]\)[^\\/]*$|\1|';;
# Otherwise, we want the empty string (not ".").
esac
}
# guard FILE
# ----------
# The CPP macro used to guard inclusion of FILE.
guard ()
{
printf '%s\n' "$1" \
| sed \
-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g' \
-e 's/__*/_/g'
}
# quote_for_sed [STRING]
# ----------------------
# Return STRING (or stdin) quoted to be used as a sed pattern.
quote_for_sed ()
{
case $# in
0) cat;;
1) printf '%s\n' "$1";;
esac \
| sed -e 's|[][\\.*]|\\&|g'
}
case "$1" in
'')
echo "$0: No files given. Try '$0 --help' for more information." 1>&2
exit 1
;;
--basedir)
basedir=$2
shift 2
;;
-h|--h*)
cat <<\EOF
Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
Wrapper for lex/yacc invocations, renaming files as desired.
INPUT is the input file
OUTPUT is one file PROG generates
DESIRED is the file we actually want instead of OUTPUT
PROGRAM is program to run
ARGS are passed to PROG
Any number of OUTPUT,DESIRED pairs may be used.
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v|--v*)
echo "ylwrap $scriptversion"
exit $?
;;
esac
# The input.
input=$1
shift
# We'll later need for a correct munging of "#line" directives.
input_sub_rx=`get_dirname "$input" | quote_for_sed`
case $input in
[\\/]* | ?:[\\/]*)
# Absolute path; do nothing.
;;
*)
# Relative path. Make it absolute.
input=`pwd`/$input
;;
esac
input_rx=`get_dirname "$input" | quote_for_sed`
# 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=false
if test -f y_tab.c || test -f y_tab.h; then
y_tab_nodot=true
fi
# The parser itself, the first file, is the destination of the .y.c
# rule in the Makefile.
parser=$1
# A sed program to s/FROM/TO/g for all the FROM/TO so that, for
# instance, we rename #include "y.tab.h" into #include "parse.h"
# during the conversion from y.tab.c to parse.c.
sed_fix_filenames=
# Also rename header guards, as Bison 2.7 for instance uses its header
# guard in its implementation file.
sed_fix_header_guards=
while test $# -ne 0; do
if test x"$1" = x"--"; then
shift
break
fi
from=$1
# Handle y_tab.c and y_tab.h output by DOS
if $y_tab_nodot; then
case $from in
"y.tab.c") from=y_tab.c;;
"y.tab.h") from=y_tab.h;;
esac
fi
shift
to=$1
shift
sed_fix_filenames="${sed_fix_filenames}s|"`quote_for_sed "$from"`"|$to|g;"
sed_fix_header_guards="${sed_fix_header_guards}s|"`guard "$from"`"|"`guard "$to"`"|g;"
done
# The program to run.
prog=$1
shift
# Make any relative path in $prog absolute.
case $prog in
[\\/]* | ?:[\\/]*) ;;
*[\\/]*) prog=`pwd`/$prog ;;
esac
dirname=ylwrap$$
do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret'
trap "ret=129; $do_exit" 1
trap "ret=130; $do_exit" 2
trap "ret=141; $do_exit" 13
trap "ret=143; $do_exit" 15
mkdir $dirname || exit 1
cd $dirname
case $# in
0) "$prog" "$input" ;;
*) "$prog" "$@" "$input" ;;
esac
ret=$?
if test $ret -eq 0; then
for from in *
do
to=`printf '%s\n' "$from" | sed "$sed_fix_filenames"`
if test -f "$from"; then
# If $2 is an absolute path name, then just use that,
# otherwise prepend '../'.
case $to in
[\\/]* | ?:[\\/]*) target=$to;;
*) target=../$to;;
esac
# Do not overwrite unchanged header files to avoid useless
# recompilations. Always update the parser itself: it is the
# destination of the .y.c rule in the Makefile. Divert the
# output of all other files to a temporary file so we can
# compare them to existing versions.
if test $from != $parser; then
realtarget=$target
target=tmp-`printf '%s\n' "$target" | sed 's|.*[\\/]||g'`
fi
# Munge "#line" or "#" directives. Don't let the resulting
# debug information point at an absolute srcdir. Use the real
# output file name, not yy.lex.c for instance. Adjust the
# include guards too.
sed -e "/^#/!b" \
-e "s|$input_rx|$input_sub_rx|" \
-e "$sed_fix_filenames" \
-e "$sed_fix_header_guards" \
"$from" >"$target" || ret=$?
# Check whether files must be updated.
if test "$from" != "$parser"; then
if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
echo "$to is unchanged"
rm -f "$target"
else
echo "updating $to"
mv -f "$target" "$realtarget"
fi
fi
else
# A missing file is only an error for the parser. This is a
# blatant hack to let us support using "yacc -d". If -d is not
# specified, don't fail when the header file is "missing".
if test "$from" = "$parser"; then
ret=1
fi
fi
done
fi
# Remove the directory.
cd ..
rm -rf $dirname
exit $ret
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:
|
