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make ylwrap a real file, not a symlink
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#! /bin/sh | ||
# ylwrap - wrapper for lex/yacc invocations. | ||
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scriptversion=2018-03-07.03; # UTC | ||
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# 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/>. | ||
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# 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. | ||
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# This file is maintained in Automake, please report | ||
# bugs to <bug-automake@gnu.org> or send patches to | ||
# <automake-patches@gnu.org>. | ||
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get_dirname () | ||
{ | ||
case $1 in | ||
*/*|*\\*) printf '%s\n' "$1" | sed -e 's|\([\\/]\)[^\\/]*$|\1|';; | ||
# Otherwise, we want the empty string (not "."). | ||
esac | ||
} | ||
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# 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' | ||
} | ||
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# 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' | ||
} | ||
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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 | ||
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# 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` | ||
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# 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 | ||
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# The parser itself, the first file, is the destination of the .y.c | ||
# rule in the Makefile. | ||
parser=$1 | ||
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# 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= | ||
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# Also rename header guards, as Bison 2.7 for instance uses its header | ||
# guard in its implementation file. | ||
sed_fix_header_guards= | ||
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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 | ||
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# The program to run. | ||
prog=$1 | ||
shift | ||
# Make any relative path in $prog absolute. | ||
case $prog in | ||
[\\/]* | ?:[\\/]*) ;; | ||
*[\\/]*) prog=`pwd`/$prog ;; | ||
esac | ||
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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 | ||
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cd $dirname | ||
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case $# in | ||
0) "$prog" "$input" ;; | ||
*) "$prog" "$@" "$input" ;; | ||
esac | ||
ret=$? | ||
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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 | ||
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# 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' "$target" | sed 's|.*[\\/]||g'` | ||
fi | ||
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# Munge "#line" or "#" directives. Don't let the resulting | ||
# debug information point at an absolute srcdir. Use the real | ||
# output file name, not yy.lex.c for instance. Adjust the | ||
# include guards too. | ||
sed -e "/^#/!b" \ | ||
-e "s|$input_rx|$input_sub_rx|" \ | ||
-e "$sed_fix_filenames" \ | ||
-e "$sed_fix_header_guards" \ | ||
"$from" >"$target" || ret=$? | ||
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# 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 | ||
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# Remove the directory. | ||
cd .. | ||
rm -rf $dirname | ||
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exit $ret | ||
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# 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: |