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-rwxr-xr-xylwrap241
1 files changed, 170 insertions, 71 deletions
diff --git a/ylwrap b/ylwrap
index 2288ccde3ac..e66a95b603f 100755
--- a/ylwrap
+++ b/ylwrap
@@ -1,6 +1,11 @@
#! /bin/sh
# ylwrap - wrapper for lex/yacc invocations.
-# Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+
+scriptversion=2004-09-10.20
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
+# Free Software Foundation, Inc.
+#
# Written by Tom Tromey <tromey@cygnus.com>.
#
# This program is free software; you can redistribute it and/or modify
@@ -17,56 +22,81 @@
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-# Usage:
-# ylwrap PROGRAM INPUT [OUTPUT DESIRED]... -- [ARGS]...
-# * PROGRAM is program to run.
-# * INPUT is the input file
-# * OUTPUT is file PROG generates
-# * DESIRED is file we actually want
-# * ARGS are passed to PROG
-# Any number of OUTPUT,DESIRED pairs may be used.
+# 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.
-# The program to run.
-prog="$1"
-shift
-# Make any relative path in $prog absolute.
-case "$prog" in
- /* | [A-Za-z]:\\*) ;;
- */*) prog="`pwd`/$prog" ;;
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+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 0
+ ;;
+ -v|--v*)
+ echo "ylwrap $scriptversion"
+ exit 0
+ ;;
esac
+
# The input.
input="$1"
shift
case "$input" in
- /* | [A-Za-z]:\\*)
+ [\\/]* | ?:[\\/]*)
# Absolute path; do nothing.
;;
- *)
- # Relative path. Make it absolute. Why? Because otherwise any
- # debugging info in the generated file will point to the wrong
- # place. This is really gross.
+ *)
+ # Relative path. Make it absolute.
input="`pwd`/$input"
;;
esac
-# We don't want to use the absolute path if the input in the current
-# directory like when making a tar ball.
-input_base=`echo $input | sed -e 's|.*/||'`
-if test -f $input_base && cmp $input_base $input >/dev/null 2>&1; then
- input=$input_base
-fi
-
pairlist=
while test "$#" -ne 0; do
- if test "$1" = "--"; then
- shift
- break
- fi
- pairlist="$pairlist $1"
- shift
+ if test "$1" = "--"; then
+ shift
+ break
+ fi
+ pairlist="$pairlist $1"
+ shift
done
+# The program to run.
+prog="$1"
+shift
+# Make any relative path in $prog absolute.
+case "$prog" in
+ [\\/]* | ?:[\\/]*) ;;
+ *[\\/]*) prog="`pwd`/$prog" ;;
+esac
+
# FIXME: add hostname here for parallel makes that run commands on
# other machines. But that might take us over the 14-char limit.
dirname=ylwrap$$
@@ -74,50 +104,119 @@ trap "cd `pwd`; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
mkdir $dirname || exit 1
cd $dirname
-case "$input" in
- /* | [A-Za-z]:\\*)
- # Absolute path; do nothing.
- ;;
- *)
- # Make a symbolic link, hard link or hardcopy.
- ln -s ../"$input" . > /dev/null 2>&1 || ln ../"$input" . > /dev/null 2>&1 || cp ../"$input" .
- ;;
+
+case $# in
+ 0) $prog "$input" ;;
+ *) $prog "$@" "$input" ;;
esac
-$prog ${1+"$@"} "$input"
-status=$?
-
-if test $status -eq 0; then
- set X $pairlist
- shift
- first=yes
- while test "$#" -ne 0; do
- if test -f "$1"; then
- # If $2 is an absolute path name, then just use that,
- # otherwise prepend `../'.
- case "$2" in
- /* | [A-Za-z]:\\*) target="$2";;
- *) target="../$2";;
- esac
- mv "$1" "$target" || status=$?
+ret=$?
+
+if test $ret -eq 0; then
+ set X $pairlist
+ shift
+ first=yes
+ # Since DOS filename conventions don't allow two dots,
+ # the DOS version of Bison writes out y_tab.c instead of y.tab.c
+ # and y_tab.h instead of y.tab.h. Test to see if this is the case.
+ y_tab_nodot="no"
+ if test -f y_tab.c || test -f y_tab.h; then
+ y_tab_nodot="yes"
+ fi
+
+ # The directory holding the input.
+ input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
+ # Quote $INPUT_DIR so we can use it in a regexp.
+ # FIXME: really we should care about more than `.' and `\'.
+ input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
+
+ while test "$#" -ne 0; do
+ from="$1"
+ # Handle y_tab.c and y_tab.h output by DOS
+ if test $y_tab_nodot = "yes"; then
+ if test $from = "y.tab.c"; then
+ from="y_tab.c"
else
- # A missing file is only an error for the first file. This
- # is a blatant hack to let us support using "yacc -d". If -d
- # is not specified, we don't want an error when the header
- # file is "missing".
- if test $first = yes; then
- status=1
- fi
+ if test $from = "y.tab.h"; then
+ from="y_tab.h"
+ fi
+ fi
+ fi
+ if test -f "$from"; then
+ # If $2 is an absolute path name, then just use that,
+ # otherwise prepend `../'.
+ case "$2" in
+ [\\/]* | ?:[\\/]*) target="$2";;
+ *) target="../$2";;
+ esac
+
+ # We do not want to overwrite a header file if it hasn't
+ # changed. This avoid useless recompilations. However the
+ # parser itself (the first file) should always be updated,
+ # because 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 $first = no; then
+ realtarget="$target"
+ target="tmp-`echo $target | sed s/.*[\\/]//g`"
fi
- shift
- shift
- first=no
- done
+ # Edit out `#line' or `#' directives.
+ #
+ # We don't want the resulting debug information to point at
+ # an absolute srcdir; it is better for it to just mention the
+ # .y file with no path.
+ #
+ # We want to use the real output file name, not yy.lex.c for
+ # instance.
+ #
+ # We want the include guards to be adjusted too.
+ FROM=`echo "$from" | sed \
+ -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
+ -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
+ TARGET=`echo "$2" | sed \
+ -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
+ -e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
+
+ sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
+ -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
+
+ # Check whether header files must be updated.
+ if test $first = no; then
+ if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
+ echo "$2" is unchanged
+ rm -f "$target"
+ else
+ echo updating "$2"
+ mv -f "$target" "$realtarget"
+ fi
+ fi
+ else
+ # A missing file is only an error for the first file. This
+ # is a blatant hack to let us support using "yacc -d". If -d
+ # is not specified, we don't want an error when the header
+ # file is "missing".
+ if test $first = yes; then
+ ret=1
+ fi
+ fi
+ shift
+ shift
+ first=no
+ done
else
- status=$?
+ ret=$?
fi
# Remove the directory.
cd ..
rm -rf $dirname
-exit $status
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End: