source: trunk/third/gcc/fixcpp @ 8834

#!/bin/sh
#
# NAME:
#       fixcpp - fix CPP errors
#
# SYNOPSIS:
#       fixcpp [-c][-p patch_file][-b bak_dir][-n new_dir] files(s)
#
# DESCRIPTION:
#       For each named file, use sed(1) to fixup any descriptive
#       text after #else or #endif or that is not properly
#       commented as this causes ANSI compilers to generate
#       unnecessary warnings.
#
#       Naturally this script is not guaranteed to be bullet
#       proof, use of -n or -b is advisable!
#
#       -c causes fixcpp to make sure that only files that
#       needed changing are affected by returning the original
#       file to its original location if no changes were needed.
#
#       -p causes fixcpp to append to a patch file the context
#       diffs of the changes wrought.
#
# SEE ALSO:
#       sed(1)
#
# AMENDED:
#       90/08/08 22:46:32 (sjg)
#
# RELEASED:
#       90/08/08 22:46:34 v1.4
#
# SCCSID:
#       @(#)fixcpp.sh 1.4 90/08/08 22:46:32 (sjg)
#
#       @(#)Copyright (c) 1990 Simon J. Gerraty
#
#       This is free software.  It comes with NO WARRANTY.
#       Everyone is granted permission to copy, modify and
#       redistribute this source code provided that all
#       recipients are given similar rights, and that the above
#       copyright notice and this notice are preserved in all
#       copies. 

TMPF=/tmp/fixcpp.$$
NEWDIR=
BAKDIR=
PATCHF=
CHECK=

set -- `getopt "cp:b:n:" $*`
if [ $? != 0 ]; then
        echo "$0 [-c][-p patch_file][-b bakup_dir][-n new_dir] file [file ...]" >&2
        exit 1
fi
for i in $*
do
        case $i in
        -c)     CHECK=yes; shift;;
        -p)     PATCHF=$2; shift 2;;
        -b)     BAKDIR=$2; shift 2;;
        -n)     NEWDIR=$2; shift 2;;
        --)     shift; break;;
        esac
done
NEWDIR=${NEWDIR:-.}
if [ $BAKDIR ]; then
        if [ ! -d $BAKDIR ]; then
                echo "$0: no such directory -- $BAKDIR" >&2
                exit 1
        fi
fi



for i in $*
do
        if [ $BAKDIR ]; then
                mv $i $BAKDIR
                infile=$BAKDIR/$i
        else
                if [ "$NEWDIR" = "." ]; then
                        mv $i ${TMPF}
                        infile=${TMPF}
                else
                        infile=$i
                fi
        fi      
        sed -e 's;^#\([         ]*e[nl][^       ]*[     ][      ]*\)\([^/       ][^\*].*\);#\1/* \2 */;' -e 's;^#\([    ]*e[nl][^       ]*[     ][      ]*\)\([^/       ]\)$;#\1/* \2 */;' $infile >${NEWDIR}/$i
        if [ "${CHECK}" = "yes" -o ${PATCHF} ]; then
                if cmp -s $infile ${NEWDIR}/$i ; then
                        if [ "${CHECK}" = "yes" ]; then
                                if [ $BAKDIR ]; then
                                        mv $infile ${NEWDIR}/$i
                                else
                                        rm ${NEWDIR}/$i
                                fi
                        fi
                else
                        if [ $PATCHF ]; then
                                diff -c $infile ${NEWDIR}/$i >> ${PATCHF}
                        fi
                fi
        fi

done

rm -f ${TMPF}