shell

<B>Digital的Unix操作系统VAX 4.2源码</B>

#! /bin/sh
#
#	@(#)SHELL	4.1	(ULTRIX)	7/3/90
#
# 001 - Linda Wilson 04-oct-1989
#	Changes for standards conformance.
#	For SYSTEM V and POSIX environments, use -c switch for incremental
#	linting.  Otherwise, use -c switch to flag casts with questionable 
#	portability.  Add support for -o for creating lint libraries.
#	Recognize but ignore -g and -O.
#
# 002 -	Jon Reeves, 19-Oct-1989
#	More standards: search llib-lcP in POSIX mode
#
TOUT=/tmp/lint.$$		# combined input for second pass
PATH=/lib:/bin:/usr/bin:
LDIR=/usr/lib/lint/lint		# where first & second pass are
LLDIR=/usr/lib/lint		# where lint libraries are found
CPPF="-C -Dlint"		# options for the cpp command
LINTF=				# options for the lint passes
FILES=				# the *.c and *.ln files in order
NDOTC=				# how many *.c were there
LLIB=				# lint library file to create
CONLY=				# set for ``compile only''
pre=				# these three variables used for
post=				# handling options with arguments
optarg=				# list variable to add argument to
#
trap "rm -f $TOUT; exit 2" 1 2 3 15
# Before we start, determine the environment
case $PROG_ENV in
	SYSTEM_FIVE) ENV=sysV ;;
	POSIX) ENV=posix;;
	*) ENV=unix;;
esac
#
# First, run through all of the arguments, building lists
#
#	lint's options are "C:abchl:no:puvx" with extensions "PXY:sz"
#	cpp options are "I:D:U:"
#	cc  options are "gO"
#
for OPT in "$@"
do
	if [ "$optarg" ]
	then
		if [ "$optarg" = "LLIB" ]	# special case for -C,-o
		then
			OPT=`basename $OPT`
			LINTF="$LINTF -L -C$pre$OPT$post"
		fi
		eval "$optarg=\"\$$optarg \$pre\$OPT\$post\""
		pre=
		post=
		optarg=
		continue
	fi
	case "$OPT" in
	*.c)	FILES="$FILES $OPT"	NDOTC="x$NDOTC";;
	*.ln)	FILES="$FILES $OPT";;
	-*)	OPT=`echo x$OPT | sed s/x-//`
		while [ "$OPT" ]
		do
			O=`echo $OPT | sed 's/\\(.\\).*/\\1/'`
			OPT=`echo $OPT | sed s/.//`
			case $O in
			p)	ENV=port;;
			n)	ENV= ;;
			c)	if [ "$ENV" ]
				then
					case $ENV in
					sysV)	CONLY=1 ;;
					posix)	CONLY=1 ;;
					*)	LINTF="$LINTF -c" ;;
					esac
				fi
				break ;;
			[abhuvx]) LINTF="$LINTF -$O";;
			[szP]) LINTF="$LINTF -$O";;
			[gO])	;;
			[IDU])	if [ "$OPT" ]
				then
					CPPF="$CPPF -$O$OPT"
				else
					optarg=CPPF
					pre=-$O
				fi
				break;;
			l)	if [ "$OPT" ]
				then
					FILES="$FILES $LLDIR/llib-l$OPT.ln"
				else
					optarg=FILES
					pre=$LLDIR/llib-l
					post=.ln
				fi
				break;;
			[Co])	if [ "$OPT" ]
				then
					OPT=`basename $OPT`
					LLIB="llib-l$OPT"
					LINTF="$LINTF -L -C$LLIB"
				else
					LLIB=
					optarg=LLIB
					pre=llib-l
					post=
				fi
				break;;
			X)	LLDIR=/usr/src/usr.bin/lint
				LDIR=/usr/src/usr.bin/lint/lpass ;;
			Y)	if [ "$OPT" ]
				then
					case $OPT in
					SYSTEM_FIVE) ENV=sysV;;
					POSIX) ENV=posix;;
					BSD) ENV=unix;;
					esac
				else
					ENV=sysV
				fi
				break;;
			*)	echo "lint: bad option ignored: $O";;
			esac
		done;;
	*)	echo "lint: file with unknown suffix ignored: $OPT";;
	esac
done

DEFL=$LLDIR/llib-lc.ln		# the default library to use

# We now know just what the environment will be.  Set up the files accordingly.
#
case $ENV in
	sysV)	CPPF="$CPPF -DSYSTEM_FIVE"
		DEFL=$LLDIR/llib-lcV.ln ;;
	unix)	DEFL=$LLDIR/llib-lc.ln ;;
	posix)	CPPF="$CPPF -DPOSIX"
		DEFL=$LLDIR/llib-lcP.ln ;;
	port)	LINTF="$LINTF -p"
		DEFL=$LLDIR/llib-port.ln;;
	"")	LINTF="$LINTF -n"
		DEFL=;;
esac
#
# Second, walk through the FILES list, running all .c's through
# lint's first pass, and just adding all .ln's to the running result
#
if [ "$NDOTC" != "x" ]	# note how many *.c's there were
then
	NDOTC=1
else
	NDOTC=
fi
if [ "$CONLY" ]		# run lint1 on *.c's only producing *.ln's
then
	for i in $FILES
	do
		case $i in
		*.c)	T=`basename $i .c`.ln
			if [ "$NDOTC" ]
			then
				echo $i:
			fi
			(cpp $CPPF $i | ${LDIR}1 $LINTF >$T) 2>&1
		esac
	done
else			# send all *.c's through lint1 run all through lint2
	rm -f $TOUT
	for i in $FILES
	do
		case $i in
		*.ln)	cat <$i >>$TOUT;;
		*.c)	if [ "$NDOTC" ]
			then
				echo $i:
			fi
			(cpp $CPPF $i | ${LDIR}1 $LINTF >>$TOUT)2>&1;;
		esac
	done
	if [ "$LLIB" ]
	then
		cp $TOUT $LLIB.ln
	else
		if [ "$DEFL" ]
		then
			cat <$DEFL >>$TOUT
		fi
		${LDIR}2 $TOUT $LINTF
	fi
fi
rm -f $TOUT