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a09e091a JB |
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: |