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Revision 1257 - (show annotations)
Sun Jan 15 06:28:46 2012 UTC (7 years, 10 months ago) by michael
File size: 6383 byte(s)
- automake 1.11.2

1 #! /bin/sh
2 # ylwrap - wrapper for lex/yacc invocations.
3
4 scriptversion=2011-08-25.18; # UTC
5
6 # Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005,
7 # 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
8 #
9 # Written by Tom Tromey <tromey@cygnus.com>.
10 #
11 # This program is free software; you can redistribute it and/or modify
12 # it under the terms of the GNU General Public License as published by
13 # the Free Software Foundation; either version 2, or (at your option)
14 # any later version.
15 #
16 # This program is distributed in the hope that it will be useful,
17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 # GNU General Public License for more details.
20 #
21 # You should have received a copy of the GNU General Public License
22 # along with this program. If not, see <http://www.gnu.org/licenses/>.
23
24 # As a special exception to the GNU General Public License, if you
25 # distribute this file as part of a program that contains a
26 # configuration script generated by Autoconf, you may include it under
27 # the same distribution terms that you use for the rest of that program.
28
29 # This file is maintained in Automake, please report
30 # bugs to <bug-automake@gnu.org> or send patches to
31 # <automake-patches@gnu.org>.
32
33 case "$1" in
34 '')
35 echo "$0: No files given. Try \`$0 --help' for more information." 1>&2
36 exit 1
37 ;;
38 --basedir)
39 basedir=$2
40 shift 2
41 ;;
42 -h|--h*)
43 cat <<\EOF
44 Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
45
46 Wrapper for lex/yacc invocations, renaming files as desired.
47
48 INPUT is the input file
49 OUTPUT is one file PROG generates
50 DESIRED is the file we actually want instead of OUTPUT
51 PROGRAM is program to run
52 ARGS are passed to PROG
53
54 Any number of OUTPUT,DESIRED pairs may be used.
55
56 Report bugs to <bug-automake@gnu.org>.
57 EOF
58 exit $?
59 ;;
60 -v|--v*)
61 echo "ylwrap $scriptversion"
62 exit $?
63 ;;
64 esac
65
66
67 # The input.
68 input="$1"
69 shift
70 case "$input" in
71 [\\/]* | ?:[\\/]*)
72 # Absolute path; do nothing.
73 ;;
74 *)
75 # Relative path. Make it absolute.
76 input="`pwd`/$input"
77 ;;
78 esac
79
80 pairlist=
81 while test "$#" -ne 0; do
82 if test "$1" = "--"; then
83 shift
84 break
85 fi
86 pairlist="$pairlist $1"
87 shift
88 done
89
90 # The program to run.
91 prog="$1"
92 shift
93 # Make any relative path in $prog absolute.
94 case "$prog" in
95 [\\/]* | ?:[\\/]*) ;;
96 *[\\/]*) prog="`pwd`/$prog" ;;
97 esac
98
99 # FIXME: add hostname here for parallel makes that run commands on
100 # other machines. But that might take us over the 14-char limit.
101 dirname=ylwrap$$
102 do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret'
103 trap "ret=129; $do_exit" 1
104 trap "ret=130; $do_exit" 2
105 trap "ret=141; $do_exit" 13
106 trap "ret=143; $do_exit" 15
107 mkdir $dirname || exit 1
108
109 cd $dirname
110
111 case $# in
112 0) "$prog" "$input" ;;
113 *) "$prog" "$@" "$input" ;;
114 esac
115 ret=$?
116
117 if test $ret -eq 0; then
118 set X $pairlist
119 shift
120 first=yes
121 # Since DOS filename conventions don't allow two dots,
122 # the DOS version of Bison writes out y_tab.c instead of y.tab.c
123 # and y_tab.h instead of y.tab.h. Test to see if this is the case.
124 y_tab_nodot="no"
125 if test -f y_tab.c || test -f y_tab.h; then
126 y_tab_nodot="yes"
127 fi
128
129 # The directory holding the input.
130 input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
131 # Quote $INPUT_DIR so we can use it in a regexp.
132 # FIXME: really we should care about more than `.' and `\'.
133 input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
134
135 while test "$#" -ne 0; do
136 from="$1"
137 # Handle y_tab.c and y_tab.h output by DOS
138 if test $y_tab_nodot = "yes"; then
139 if test $from = "y.tab.c"; then
140 from="y_tab.c"
141 else
142 if test $from = "y.tab.h"; then
143 from="y_tab.h"
144 fi
145 fi
146 fi
147 if test -f "$from"; then
148 # If $2 is an absolute path name, then just use that,
149 # otherwise prepend `../'.
150 case "$2" in
151 [\\/]* | ?:[\\/]*) target="$2";;
152 *) target="../$2";;
153 esac
154
155 # We do not want to overwrite a header file if it hasn't
156 # changed. This avoid useless recompilations. However the
157 # parser itself (the first file) should always be updated,
158 # because it is the destination of the .y.c rule in the
159 # Makefile. Divert the output of all other files to a temporary
160 # file so we can compare them to existing versions.
161 if test $first = no; then
162 realtarget="$target"
163 target="tmp-`echo $target | sed s/.*[\\/]//g`"
164 fi
165 # Edit out `#line' or `#' directives.
166 #
167 # We don't want the resulting debug information to point at
168 # an absolute srcdir; it is better for it to just mention the
169 # .y file with no path.
170 #
171 # We want to use the real output file name, not yy.lex.c for
172 # instance.
173 #
174 # We want the include guards to be adjusted too.
175 FROM=`echo "$from" | sed \
176 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
177 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
178 TARGET=`echo "$2" | sed \
179 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
180 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
181
182 sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
183 -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
184
185 # Check whether header files must be updated.
186 if test $first = no; then
187 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
188 echo "$2" is unchanged
189 rm -f "$target"
190 else
191 echo updating "$2"
192 mv -f "$target" "$realtarget"
193 fi
194 fi
195 else
196 # A missing file is only an error for the first file. This
197 # is a blatant hack to let us support using "yacc -d". If -d
198 # is not specified, we don't want an error when the header
199 # file is "missing".
200 if test $first = yes; then
201 ret=1
202 fi
203 fi
204 shift
205 shift
206 first=no
207 done
208 else
209 ret=$?
210 fi
211
212 # Remove the directory.
213 cd ..
214 rm -rf $dirname
215
216 exit $ret
217
218 # Local Variables:
219 # mode: shell-script
220 # sh-indentation: 2
221 # eval: (add-hook 'write-file-hooks 'time-stamp)
222 # time-stamp-start: "scriptversion="
223 # time-stamp-format: "%:y-%02m-%02d.%02H"
224 # time-stamp-time-zone: "UTC"
225 # time-stamp-end: "; # UTC"
226 # End:

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