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Revision 1504 - (show annotations)
Thu Aug 16 18:03:00 2012 UTC (10 years, 5 months ago) by michael
File size: 6546 byte(s)
- automake 1.12.3

1 #! /bin/sh
2 # ylwrap - wrapper for lex/yacc invocations.
3
4 scriptversion=2012-07-14.08; # UTC
5
6 # Copyright (C) 1996-2012 Free Software Foundation, Inc.
7 #
8 # Written by Tom Tromey <tromey@cygnus.com>.
9 #
10 # This program is free software; you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation; either version 2, or (at your option)
13 # any later version.
14 #
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
19 #
20 # You should have received a copy of the GNU General Public License
21 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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 # This file is maintained in Automake, please report
29 # bugs to <bug-automake@gnu.org> or send patches to
30 # <automake-patches@gnu.org>.
31
32 get_dirname ()
33 {
34 case $1 in
35 */*|*\\*) printf '%s\n' "$1" | sed -e 's|\([\\/]\)[^\\/]*$|\1|';;
36 # Otherwise, we want the empty string (not ".").
37 esac
38 }
39
40 # guard FILE
41 # ----------
42 # The CPP macro used to guard inclusion of FILE.
43 guard()
44 {
45 printf '%s\n' "$from" \
46 | sed \
47 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
48 -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'
49 }
50
51 # quote_for_sed [STRING]
52 # ----------------------
53 # Return STRING (or stdin) quoted to be used as a sed pattern.
54 quote_for_sed ()
55 {
56 case $# in
57 0) cat;;
58 1) printf '%s\n' "$1";;
59 esac \
60 | sed -e 's|[][\\.*]|\\&|g'
61 }
62
63 case "$1" in
64 '')
65 echo "$0: No files given. Try '$0 --help' for more information." 1>&2
66 exit 1
67 ;;
68 --basedir)
69 basedir=$2
70 shift 2
71 ;;
72 -h|--h*)
73 cat <<\EOF
74 Usage: ylwrap [--help|--version] INPUT [OUTPUT DESIRED]... -- PROGRAM [ARGS]...
75
76 Wrapper for lex/yacc invocations, renaming files as desired.
77
78 INPUT is the input file
79 OUTPUT is one file PROG generates
80 DESIRED is the file we actually want instead of OUTPUT
81 PROGRAM is program to run
82 ARGS are passed to PROG
83
84 Any number of OUTPUT,DESIRED pairs may be used.
85
86 Report bugs to <bug-automake@gnu.org>.
87 EOF
88 exit $?
89 ;;
90 -v|--v*)
91 echo "ylwrap $scriptversion"
92 exit $?
93 ;;
94 esac
95
96
97 # The input.
98 input="$1"
99 shift
100 # We'll later need for a correct munging of "#line" directives.
101 input_sub_rx=`get_dirname "$input" | quote_for_sed`
102 case "$input" in
103 [\\/]* | ?:[\\/]*)
104 # Absolute path; do nothing.
105 ;;
106 *)
107 # Relative path. Make it absolute.
108 input="`pwd`/$input"
109 ;;
110 esac
111 input_rx=`get_dirname "$input" | quote_for_sed`
112
113 # Since DOS filename conventions don't allow two dots,
114 # the DOS version of Bison writes out y_tab.c instead of y.tab.c
115 # and y_tab.h instead of y.tab.h. Test to see if this is the case.
116 y_tab_nodot=false
117 if test -f y_tab.c || test -f y_tab.h; then
118 y_tab_nodot=true
119 fi
120
121 # The parser itself, the first file, is the destination of the .y.c
122 # rule in the Makefile.
123 parser=$1
124 # A sed program to s/FROM/TO/g for all the FROM/TO so that, for
125 # instance, we rename #include "y.tab.h" into #include "parse.h"
126 # during the conversion from y.tab.c to parse.c.
127 rename_sed=
128 while test "$#" -ne 0; do
129 if test "$1" = "--"; then
130 shift
131 break
132 fi
133 from=$1
134 # Handle y_tab.c and y_tab.h output by DOS
135 if $y_tab_nodot; then
136 case $from in
137 "y.tab.c") from=y_tab.c;;
138 "y.tab.h") from=y_tab.h;;
139 esac
140 fi
141 shift
142 to=$1
143 shift
144 rename_sed="${rename_sed}s|"`quote_for_sed "$from"`"|$to|g;"
145 done
146
147 # The program to run.
148 prog="$1"
149 shift
150 # Make any relative path in $prog absolute.
151 case "$prog" in
152 [\\/]* | ?:[\\/]*) ;;
153 *[\\/]*) prog="`pwd`/$prog" ;;
154 esac
155
156 # FIXME: add hostname here for parallel makes that run commands on
157 # other machines. But that might take us over the 14-char limit.
158 dirname=ylwrap$$
159 do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret'
160 trap "ret=129; $do_exit" 1
161 trap "ret=130; $do_exit" 2
162 trap "ret=141; $do_exit" 13
163 trap "ret=143; $do_exit" 15
164 mkdir $dirname || exit 1
165
166 cd $dirname
167
168 case $# in
169 0) "$prog" "$input" ;;
170 *) "$prog" "$@" "$input" ;;
171 esac
172 ret=$?
173
174 if test $ret -eq 0; then
175 for from in *
176 do
177 to=`printf '%s\n' "$from" | sed "$rename_sed"`
178 if test -f "$from"; then
179 # If $2 is an absolute path name, then just use that,
180 # otherwise prepend '../'.
181 case $to in
182 [\\/]* | ?:[\\/]*) target=$to;;
183 *) target="../$to";;
184 esac
185
186 # Do not overwrite unchanged header files to avoid useless
187 # recompilations. Always update the parser itself: it is the
188 # destination of the .y.c rule in the Makefile. Divert the
189 # output of all other files to a temporary file so we can
190 # compare them to existing versions.
191 if test $from != $parser; then
192 realtarget="$target"
193 target=tmp-`printf '%s\n' "$target" | sed 's|.*[\\/]||g'`
194 fi
195
196 # Munge "#line" or "#" directives. Don't let the resulting
197 # debug information point at an absolute srcdir. Use the real
198 # output file name, not yy.lex.c for instance. Adjust the
199 # include guards too.
200 FROM=`guard "$from"`
201 TARGET=`guard "$to"`
202 sed -e "/^#/!b" -e "s|$input_rx|$input_sub_rx|" -e "$rename_sed" \
203 -e "s|$FROM|$TARGET|" "$from" >"$target" || ret=$?
204
205 # Check whether files must be updated.
206 if test "$from" != "$parser"; then
207 if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
208 echo "$to is unchanged"
209 rm -f "$target"
210 else
211 echo "updating $to"
212 mv -f "$target" "$realtarget"
213 fi
214 fi
215 else
216 # A missing file is only an error for the parser. This is a
217 # blatant hack to let us support using "yacc -d". If -d is not
218 # specified, don't fail when the header file is "missing".
219 if test "$from" = "$parser"; then
220 ret=1
221 fi
222 fi
223 done
224 fi
225
226 # Remove the directory.
227 cd ..
228 rm -rf $dirname
229
230 exit $ret
231
232 # Local Variables:
233 # mode: shell-script
234 # sh-indentation: 2
235 # eval: (add-hook 'write-file-hooks 'time-stamp)
236 # time-stamp-start: "scriptversion="
237 # time-stamp-format: "%:y-%02m-%02d.%02H"
238 # time-stamp-time-zone: "UTC"
239 # time-stamp-end: "; # UTC"
240 # End:

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