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#! /bin/sh |
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# ylwrap - wrapper for lex/yacc invocations. |
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scriptversion=2009-04-28.21; # UTC |
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scriptversion=2011-08-25.18; # UTC |
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# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005, |
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# 2007, 2009 Free Software Foundation, Inc. |
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# Copyright (C) 1996-2012 Free Software Foundation, Inc. |
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# |
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# Written by Tom Tromey <tromey@cygnus.com>. |
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# |
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case "$1" in |
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'') |
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echo "$0: No files given. Try \`$0 --help' for more information." 1>&2 |
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echo "$0: No files given. Try '$0 --help' for more information." 1>&2 |
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exit 1 |
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;; |
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--basedir) |
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;; |
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esac |
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get_dirname () |
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{ |
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case $1 in |
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*/*|*\\*) printf '%s\n' "$1" | sed -e 's,\([\\/]\)[^\\/]*$,\1,';; |
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# Otherwise, we want the empty string (not "."). |
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esac |
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} |
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|
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quote_for_sed () |
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{ |
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# FIXME: really we should care about more than '.' and '\'. |
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sed -e 's,[\\.],\\&,g' |
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} |
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# The input. |
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input="$1" |
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shift |
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# We'll later need for a correct munging of "#line" directives. |
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input_sub_rx=`get_dirname "$input" | quote_for_sed` |
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case "$input" in |
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[\\/]* | ?:[\\/]*) |
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# Absolute path; do nothing. |
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# FIXME: add hostname here for parallel makes that run commands on |
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# other machines. But that might take us over the 14-char limit. |
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dirname=ylwrap$$ |
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trap "cd '`pwd`'; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15 |
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do_exit="cd '`pwd`' && rm -rf $dirname > /dev/null 2>&1;"' (exit $ret); exit $ret' |
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trap "ret=129; $do_exit" 1 |
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trap "ret=130; $do_exit" 2 |
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trap "ret=141; $do_exit" 13 |
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trap "ret=143; $do_exit" 15 |
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mkdir $dirname || exit 1 |
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cd $dirname |
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y_tab_nodot="yes" |
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fi |
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# The directory holding the input. |
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input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'` |
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# Quote $INPUT_DIR so we can use it in a regexp. |
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# FIXME: really we should care about more than `.' and `\'. |
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input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'` |
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input_rx=`get_dirname "$input" | quote_for_sed` |
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while test "$#" -ne 0; do |
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from="$1" |
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# Handle y_tab.c and y_tab.h output by DOS |
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if test $y_tab_nodot = "yes"; then |
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if test $from = "y.tab.c"; then |
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from="y_tab.c" |
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from="y_tab.c" |
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else |
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if test $from = "y.tab.h"; then |
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from="y_tab.h" |
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fi |
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if test $from = "y.tab.h"; then |
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from="y_tab.h" |
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fi |
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fi |
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fi |
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if test -f "$from"; then |
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# If $2 is an absolute path name, then just use that, |
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# otherwise prepend `../'. |
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# otherwise prepend '../'. |
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case "$2" in |
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[\\/]* | ?:[\\/]*) target="$2";; |
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*) target="../$2";; |
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[\\/]* | ?:[\\/]*) target="$2";; |
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*) target="../$2";; |
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esac |
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# We do not want to overwrite a header file if it hasn't |
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# Makefile. Divert the output of all other files to a temporary |
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# file so we can compare them to existing versions. |
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if test $first = no; then |
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realtarget="$target" |
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target="tmp-`echo $target | sed s/.*[\\/]//g`" |
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realtarget="$target" |
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target="tmp-`echo $target | sed s/.*[\\/]//g`" |
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fi |
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# Edit out `#line' or `#' directives. |
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# |
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# Munge "#line" or "#" directives. |
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# We don't want the resulting debug information to point at |
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# an absolute srcdir; it is better for it to just mention the |
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# .y file with no path. |
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# |
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# an absolute srcdir. |
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# We want to use the real output file name, not yy.lex.c for |
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# instance. |
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# |
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# We want the include guards to be adjusted too. |
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FROM=`echo "$from" | sed \ |
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
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sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \ |
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sed -e "/^#/!b" -e "s,$input_rx,$input_sub_rx," -e "s,$from,$2," \ |
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-e "s,$FROM,$TARGET," "$from" >"$target" || ret=$? |
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# Check whether header files must be updated. |
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if test $first = no; then |
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if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then |
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echo "$2" is unchanged |
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rm -f "$target" |
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else |
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if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then |
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echo "$2" is unchanged |
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rm -f "$target" |
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else |
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echo updating "$2" |
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mv -f "$target" "$realtarget" |
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fi |
