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-rwxr-xr-xylwrap205
1 files changed, 113 insertions, 92 deletions
diff --git a/ylwrap b/ylwrap
index 9253635..8f072a8 100755
--- a/ylwrap
+++ b/ylwrap
@@ -1,10 +1,9 @@
#! /bin/sh
# ylwrap - wrapper for lex/yacc invocations.
-scriptversion=2011-08-25.18; # UTC
+scriptversion=2013-01-12.17; # UTC
-# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005,
-# 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+# Copyright (C) 1996-2013 Free Software Foundation, Inc.
#
# Written by Tom Tromey <tromey@cygnus.com>.
#
@@ -30,9 +29,41 @@ scriptversion=2011-08-25.18; # UTC
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.
+get_dirname ()
+{
+ case $1 in
+ */*|*\\*) printf '%s\n' "$1" | sed -e 's|\([\\/]\)[^\\/]*$|\1|';;
+ # Otherwise, we want the empty string (not ".").
+ esac
+}
+
+# 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'
+}
+
+# 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'
+}
+
case "$1" in
'')
- echo "$0: No files given. Try \`$0 --help' for more information." 1>&2
+ echo "$0: No files given. Try '$0 --help' for more information." 1>&2
exit 1
;;
--basedir)
@@ -65,39 +96,71 @@ esac
# The input.
-input="$1"
+input=$1
shift
-case "$input" in
+# 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"
+ input=`pwd`/$input
;;
esac
+input_rx=`get_dirname "$input" | quote_for_sed`
+
+# 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
+
+# The parser itself, the first file, is the destination of the .y.c
+# rule in the Makefile.
+parser=$1
+
+# A sed program to s/FROM/TO/g for all the FROM/TO so that, for
+# instance, we rename #include "y.tab.h" into #include "parse.h"
+# during the conversion from y.tab.c to parse.c.
+sed_fix_filenames=
-pairlist=
-while test "$#" -ne 0; do
- if test "$1" = "--"; then
+# Also rename header guards, as Bison 2.7 for instance uses its header
+# guard in its implementation file.
+sed_fix_header_guards=
+
+while test $# -ne 0; do
+ if test x"$1" = x"--"; then
shift
break
fi
- pairlist="$pairlist $1"
+ 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
# The program to run.
-prog="$1"
+prog=$1
shift
# Make any relative path in $prog absolute.
-case "$prog" in
+case $prog in
[\\/]* | ?:[\\/]*) ;;
- *[\\/]*) prog="`pwd`/$prog" ;;
+ *[\\/]*) 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$$
do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret'
trap "ret=129; $do_exit" 1
@@ -115,98 +178,56 @@ esac
ret=$?
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
- if test $from = "y.tab.h"; then
- from="y_tab.h"
- fi
- fi
- fi
+ for from in *
+ do
+ to=`printf '%s\n' "$from" | sed "$sed_fix_filenames"`
if test -f "$from"; then
# If $2 is an absolute path name, then just use that,
- # otherwise prepend `../'.
- case "$2" in
- [\\/]* | ?:[\\/]*) target="$2";;
- *) target="../$2";;
+ # otherwise prepend '../'.
+ case $to in
+ [\\/]* | ?:[\\/]*) target=$to;;
+ *) target=../$to;;
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`"
+ # 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' "$target" | sed 's|.*[\\/]||g'`
fi
- # Edit out `#line' or `#' directives.
- #
- # We don't want the resulting debug information to point at
- # an absolute srcdir; it is better for it to just mention the
- # .y file with no path.
- #
- # We want to use the real output file name, not yy.lex.c for
- # instance.
- #
- # We want the include guards to be adjusted too.
- FROM=`echo "$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 $first = no; then
+
+ # Munge "#line" or "#" directives. Don't let the resulting
+ # debug information point at an absolute srcdir. Use the real
+ # output file name, not yy.lex.c for instance. Adjust the
+ # include guards too.
+ sed -e "/^#/!b" \
+ -e "s|$input_rx|$input_sub_rx|" \
+ -e "$sed_fix_filenames" \
+ -e "$sed_fix_header_guards" \
+ "$from" >"$target" || ret=$?
+
+ # Check whether files must be updated.
+ if test "$from" != "$parser"; then
if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
- echo "$2" is unchanged
+ echo "$to is unchanged"
rm -f "$target"
else
- echo updating "$2"
+ echo "updating $to"
mv -f "$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 $first = yes; then
+ # A missing file is only an error for the parser. This is a
+ # blatant hack to let us support using "yacc -d". If -d is not
+ # specified, don't fail when the header file is "missing".
+ if test "$from" = "$parser"; then
ret=1
fi
fi
- shift
- shift
- first=no
done
-else
- ret=$?
fi
# Remove the directory.
bgstack15