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#! /bin/sh |
#! /bin/sh |
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# ylwrap - wrapper for lex/yacc invocations. |
# ylwrap - wrapper for lex/yacc invocations. |
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scriptversion=2011-08-25.18; # UTC |
scriptversion=2012-07-14.08; # UTC |
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# Copyright (C) 1996-2012 Free Software Foundation, Inc. |
# Copyright (C) 1996-2012 Free Software Foundation, Inc. |
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# |
# |
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# bugs to <bug-automake@gnu.org> or send patches to |
# bugs to <bug-automake@gnu.org> or send patches to |
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# <automake-patches@gnu.org>. |
# <automake-patches@gnu.org>. |
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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|\([\\/]\)[^\\/]*$|\1|';; |
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# Otherwise, we want the empty string (not "."). |
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esac |
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} |
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# guard FILE |
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# ---------- |
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# The CPP macro used to guard inclusion of FILE. |
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guard() |
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{ |
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printf '%s\n' "$from" \ |
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| sed \ |
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g' |
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} |
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# quote_for_sed [STRING] |
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# ---------------------- |
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# Return STRING (or stdin) quoted to be used as a sed pattern. |
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quote_for_sed () |
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{ |
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case $# in |
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0) cat;; |
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1) printf '%s\n' "$1";; |
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esac \ |
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| sed -e 's|[][\\.*]|\\&|g' |
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} |
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case "$1" in |
case "$1" in |
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'') |
'') |
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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 |
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;; |
;; |
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esac |
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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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. |
# The input. |
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input="$1" |
input="$1" |
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input="`pwd`/$input" |
input="`pwd`/$input" |
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;; |
;; |
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esac |
esac |
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input_rx=`get_dirname "$input" | quote_for_sed` |
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pairlist= |
# Since DOS filename conventions don't allow two dots, |
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# the DOS version of Bison writes out y_tab.c instead of y.tab.c |
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# and y_tab.h instead of y.tab.h. Test to see if this is the case. |
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y_tab_nodot=false |
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if test -f y_tab.c || test -f y_tab.h; then |
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y_tab_nodot=true |
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fi |
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# The parser itself, the first file, is the destination of the .y.c |
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# rule in the Makefile. |
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parser=$1 |
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# A sed program to s/FROM/TO/g for all the FROM/TO so that, for |
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# instance, we rename #include "y.tab.h" into #include "parse.h" |
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# during the conversion from y.tab.c to parse.c. |
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rename_sed= |
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while test "$#" -ne 0; do |
while test "$#" -ne 0; do |
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if test "$1" = "--"; then |
if test "$1" = "--"; then |
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shift |
shift |
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break |
break |
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fi |
fi |
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pairlist="$pairlist $1" |
from=$1 |
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# Handle y_tab.c and y_tab.h output by DOS |
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if $y_tab_nodot; then |
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case $from in |
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"y.tab.c") from=y_tab.c;; |
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"y.tab.h") from=y_tab.h;; |
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esac |
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fi |
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shift |
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to=$1 |
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shift |
shift |
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rename_sed="${rename_sed}s|"`quote_for_sed "$from"`"|$to|g;" |
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done |
done |
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# The program to run. |
# The program to run. |
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ret=$? |
ret=$? |
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if test $ret -eq 0; then |
if test $ret -eq 0; then |
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set X $pairlist |
for from in * |
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shift |
do |
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first=yes |
to=`printf '%s\n' "$from" | sed "$rename_sed"` |
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# Since DOS filename conventions don't allow two dots, |
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# the DOS version of Bison writes out y_tab.c instead of y.tab.c |
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# and y_tab.h instead of y.tab.h. Test to see if this is the case. |
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y_tab_nodot="no" |
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if test -f y_tab.c || test -f y_tab.h; then |
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y_tab_nodot="yes" |
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fi |
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input_rx=`get_dirname "$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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else |
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if test $from = "y.tab.h"; then |
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from="y_tab.h" |
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fi |
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fi |
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fi |
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if test -f "$from"; then |
if test -f "$from"; then |
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# If $2 is an absolute path name, then just use that, |
# If $2 is an absolute path name, then just use that, |
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# otherwise prepend '../'. |
# otherwise prepend '../'. |
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case "$2" in |
case $to in |
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[\\/]* | ?:[\\/]*) target="$2";; |
[\\/]* | ?:[\\/]*) target=$to;; |
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*) target="../$2";; |
*) target="../$to";; |
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esac |
esac |
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# We do not want to overwrite a header file if it hasn't |
# Do not overwrite unchanged header files to avoid useless |
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# changed. This avoid useless recompilations. However the |
# recompilations. Always update the parser itself: it is the |
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# parser itself (the first file) should always be updated, |
# destination of the .y.c rule in the Makefile. Divert the |
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# because it is the destination of the .y.c rule in the |
# output of all other files to a temporary file so we can |
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# Makefile. Divert the output of all other files to a temporary |
# compare them to existing versions. |
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# file so we can compare them to existing versions. |
if test $from != $parser; then |
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if test $first = no; then |
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realtarget="$target" |
realtarget="$target" |
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target="tmp-`echo $target | sed s/.*[\\/]//g`" |
target=tmp-`printf '%s\n' "$target" | sed 's|.*[\\/]||g'` |
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fi |
fi |
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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. |
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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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# 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 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
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TARGET=`echo "$2" | sed \ |
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-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\ |
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-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'` |
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sed -e "/^#/!b" -e "s,$input_rx,$input_sub_rx," -e "s,$from,$2," \ |
# Munge "#line" or "#" directives. Don't let the resulting |
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-e "s,$FROM,$TARGET," "$from" >"$target" || ret=$? |
# debug information point at an absolute srcdir. Use the real |
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# output file name, not yy.lex.c for instance. Adjust the |
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# include guards too. |
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FROM=`guard "$from"` |
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TARGET=`guard "$to"` |
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sed -e "/^#/!b" -e "s|$input_rx|$input_sub_rx|" -e "$rename_sed" \ |
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-e "s|$FROM|$TARGET|" "$from" >"$target" || ret=$? |
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# Check whether header files must be updated. |
# Check whether files must be updated. |
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if test $first = no; then |
if test "$from" != "$parser"; then |
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if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then |
if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then |
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echo "$2" is unchanged |
echo "$to is unchanged" |
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rm -f "$target" |
rm -f "$target" |
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else |
else |
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echo updating "$2" |
echo "updating $to" |
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mv -f "$target" "$realtarget" |
mv -f "$target" "$realtarget" |
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fi |
fi |
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fi |
fi |
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else |
else |
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# A missing file is only an error for the first file. This |
# A missing file is only an error for the parser. This is a |
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# is a blatant hack to let us support using "yacc -d". If -d |
# blatant hack to let us support using "yacc -d". If -d is not |
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# is not specified, we don't want an error when the header |
# specified, don't fail when the header file is "missing". |
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# file is "missing". |
if test "$from" = "$parser"; then |
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if test $first = yes; then |
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ret=1 |
ret=1 |
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fi |
fi |
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fi |
fi |
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shift |
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shift |
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first=no |
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done |
done |
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else |
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ret=$? |
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fi |
fi |
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# Remove the directory. |
# Remove the directory. |
Parent Directory
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