#! /bin/sh -f


file=$1

encoding=`sed -e 's,^scriptencoding[ 	][ 	]*,,' -e t -e d $file`
case "$encoding" in
utf-8|"")	decode=cat;;
*)		decode="iconv -f $encoding -t utf-8";;
esac

name=`sed -e 's,^let[ 	]*b:keymap.*=[ 	]*"\(.*\)",\1,' -e t -e d $file`
case "$name" in
"")	name=`basename $file .vim | sed -e 's,_[^_]*$,,' -e 's,-,_,g'`;;
esac


(
cat <<\/eoc
#include <stdio.h>

void
printutf8 (unichar)
	unsigned long unichar;
{
	if (unichar == '\\' || unichar == '"') {
		printf ("\\");
	}

	if (unichar < 0x80) {
		printf ("%c", unichar);
	} else if (unichar < 0x800) {
		printf ("%c", 0xC0 | (unichar >> 6));
		printf ("%c", 0x80 | (unichar & 0x3F));
	} else if (unichar < 0x10000) {
		printf ("%c", 0xE0 | (unichar >> 12));
		printf ("%c", 0x80 | ((unichar >> 6) & 0x3F));
		printf ("%c", 0x80 | (unichar & 0x3F));
	} else if (unichar < 0x200000) {
		printf ("%c", 0xF0 | (unichar >> 18));
		printf ("%c", 0x80 | ((unichar >> 12) & 0x3F));
		printf ("%c", 0x80 | ((unichar >> 6) & 0x3F));
		printf ("%c", 0x80 | (unichar & 0x3F));
	} else if (unichar < 0x4000000) {
		printf ("%c", 0xF8 | (unichar >> 24));
		printf ("%c", 0x80 | ((unichar >> 18) & 0x3F));
		printf ("%c", 0x80 | ((unichar >> 12) & 0x3F));
		printf ("%c", 0x80 | ((unichar >> 6) & 0x3F));
		printf ("%c", 0x80 | (unichar & 0x3F));
	} else if (unichar < 0x80000000) {
		printf ("%c", 0xFC | (unichar >> 30));
		printf ("%c", 0x80 | ((unichar >> 24) & 0x3F));
		printf ("%c", 0x80 | ((unichar >> 18) & 0x3F));
		printf ("%c", 0x80 | ((unichar >> 12) & 0x3F));
		printf ("%c", 0x80 | ((unichar >> 6) & 0x3F));
		printf ("%c", 0x80 | (unichar & 0x3F));
	}
}

void
printq (s)
	char * s;
{
	while (* s) {
		if (* s == '"' || * s == '\\') {
			printf ("\\");
		}
		printf ("%c", * s);
		s ++;
	}
}

void
maputf (k, s, comment)
	char * k;
	char * s;
	char * comment;
{
	printf ("	{\"");
	printq (k);
	printf ("\", \"");
	printq (s);
	printf ("\"},");
	if (* comment) {
		printf ("	/* %s */", comment);
	}
	printf ("\n");
}

void
mapuni (k, c, comment)
	char * k;
	unsigned long c;
	char * comment;
{
	printf ("	{\"");
	printq (k);
	printf ("\", \"");
	printutf8 (c);
	printf ("\"},");
	if (* comment) {
		printf ("	/* %s */", comment);
	}
	printf ("\n");
}

int
main () {
/eoc


#	transform
#	´C	Ç
#	O	<char-207>	" Ï
#	E$	<char-0x20AC>  " EURO SIGN
#	A:    <Char-192>  " sheva
#	]R      <ÌChar-207>	" rafe
#	X-r <Char-0xfb27>  " Alternative resh
#	p	з	CYRILLIC SMALL LETTER ZE

export LC_CTYPE=C
$decode $file | tr '	' ' ' |
sed	-e '1,/^loadkey/ d' -e '/^"/ d' -e '/^ *$/ d' \
	-e 's:^\([^ ][^ ]*\)  *<[^>]*[Cc][Hh][Aa][Rr]-\([0-9xa-fA-F]*\)> *"* *\(.*\):	mapuni ("\1", \2, "\3");:' \
	-e t \
	-e 's:^\([^ ][^ ]*\)  *\([^ ]*\) *"* *\(.*\):	maputf ("\1", "\2", "\3");:' \
	-e t \
	-e 's:^  *" *\(.*\):	printf ("			/* \1 */\\n");:' \
	-e t \
	-e 's,^,ERROR:	,'


cat <</eoc
	return 0;
}
/eoc
) > keymaps/$name.c

if cc -o keymaps/$name.exe keymaps/$name.c
then	if [ -f keymaps/$name.h ]
	then	echo saving previous keyboard mapping file to keymaps/$name.h.sav
		mv -i keymaps/$name.h keymaps/$name.h.sav
	fi
	(
	echo "/***************************************************"
	echo "	mined keyboard mapping table"
	echo "	* generated with mkkbmap (mkkmvim)"
	echo "	  from $file"
	echo "*/"
	echo "struct keymap keymap_$name [] = {"
	keymaps/$name.exe
	echo "	{NIL_PTR}"
	echo "};"
	) > keymaps/$name.h

	./mkkentry -V $name

	rm -f keymaps/$name.c keymaps/$name.exe
fi