diff options
Diffstat (limited to 'ylwrap')
| -rwxr-xr-x | ylwrap | 241 |
1 files changed, 170 insertions, 71 deletions
@@ -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: |