src/regex/mkh

#! /bin/sh
# mkh - pull headers out of C source
PATH=/bin:/usr/bin ; export PATH

# egrep pattern to pick out marked lines
egrep='^ =([ 	]|$)'

# Sed program to process marked lines into lines for the header file.
# The markers have already been removed.  Two things are done here:  removal
# of backslashed newlines, and some fudging of comments.  The first is done
# because -o needs to have prototypes on one line to strip them down.
# Getting comments into the output is tricky; we turn C++-style // comments
# into /* */ comments, after altering any existing */'s to avoid trouble.
peel='	/\\$/N
	/\\\n[ 	]*/s///g
	/\/\//s;\*/;* /;g
	/\/\//s;//\(.*\);/*\1 */;'

for a
do
	case "$a" in
	-o)	# old (pre-function-prototype) compiler
		# add code to comment out argument lists
		peel="$peel
			"'/^\([^#\/][^\/]*[a-zA-Z0-9_)]\)(\(.*\))/s;;\1(/*\2*/);'
		shift
		;;
	-b)	# funny Berkeley __P macro
		peel="$peel
			"'/^\([^#\/][^\/]*[a-zA-Z0-9_)]\)(\(.*\))/s;;\1 __P((\2));'
		shift
		;;
	-s)	# compiler doesn't like `static foo();'
		# add code to get rid of the `static'
		peel="$peel
			"'/^static[ 	][^\/]*[a-zA-Z0-9_)](.*)/s;static.;;'
		shift
		;;
	-p)	# private declarations
		egrep='^ ==([ 	]|$)'
		shift
		;;
	-i)	# wrap in #ifndef, argument is name
		ifndef="$2"
		shift ; shift
		;;
	*)	break
		;;
	esac
done

if test " $ifndef" != " "
then
	echo "#ifndef $ifndef"
	echo "#define	$ifndef	/* never again */"
fi
echo "/* ========= begin header generated by $0 ========= */"
echo '#ifdef __cplusplus'
echo 'extern "C" {'
echo '#endif'
for f
do
	echo
	echo "/* === $f === */"
	egrep "$egrep" $f | sed 's/^ ==*[ 	]//;s/^ ==*$//' | sed "$peel"
	echo
done
echo '#ifdef __cplusplus'
echo '}'
echo '#endif'
echo "/* ========= end header generated by $0 ========= */"
if test " $ifndef" != " "
then
	echo "#endif"
fi
exit 0
Commit	Line	Data
	1	#! /bin/sh
	2	# mkh - pull headers out of C source
	3	PATH=/bin:/usr/bin ; export PATH
	4
	5	# egrep pattern to pick out marked lines
	6	egrep='^ =([ ]\|$)'
	7
	8	# Sed program to process marked lines into lines for the header file.
	9	# The markers have already been removed. Two things are done here: removal
	10	# of backslashed newlines, and some fudging of comments. The first is done
	11	# because -o needs to have prototypes on one line to strip them down.
	12	# Getting comments into the output is tricky; we turn C++-style // comments
	13	# into /* / comments, after altering any existing /'s to avoid trouble.
	14	peel=' /\\$/N
	15	/\\\n[ ]*/s///g
	16	/\/\//s;\/; /;g
	17	/\/\//s;//\(.\);/\1 */;'
	18
	19	for a
	20	do
	21	case "$a" in
	22	-o) # old (pre-function-prototype) compiler
	23	# add code to comment out argument lists
	24	peel="$peel
	25	"'/^\([^#\/][^\/][a-zA-Z0-9_)]\)(\(.\))/s;;\1(/\2/);'
	26	shift
	27	;;
	28	-b) # funny Berkeley __P macro
	29	peel="$peel
	30	"'/^\([^#\/][^\/][a-zA-Z0-9_)]\)(\(.\))/s;;\1 __P((\2));'
	31	shift
	32	;;
	33	-s) # compiler doesn't like `static foo();'
	34	# add code to get rid of the `static'
	35	peel="$peel
	36	"'/^static[ ][^\/][a-zA-Z0-9_)](.)/s;static.;;'
	37	shift
	38	;;
	39	-p) # private declarations
	40	egrep='^ ==([ ]\|$)'
	41	shift
	42	;;
	43	-i) # wrap in #ifndef, argument is name
	44	ifndef="$2"
	45	shift ; shift
	46	;;
	47	*) break
	48	;;
	49	esac
	50	done
	51
	52	if test " $ifndef" != " "
	53	then
	54	echo "#ifndef $ifndef"
	55	echo "#define $ifndef /* never again */"
	56	fi
	57	echo "/* ========= begin header generated by $0 ========= */"
	58	echo '#ifdef __cplusplus'
	59	echo 'extern "C" {'
	60	echo '#endif'
	61	for f
	62	do
	63	echo
	64	echo "/* === $f === */"
	65	egrep "$egrep" $f \| sed 's/^ ==[ ]//;s/^ ==$//' \| sed "$peel"
	66	echo
	67	done
	68	echo '#ifdef __cplusplus'
	69	echo '}'
	70	echo '#endif'
	71	echo "/* ========= end header generated by $0 ========= */"
	72	if test " $ifndef" != " "
	73	then
	74	echo "#endif"
	75	fi
	76	exit 0