#! /bin/sh


checktags () {
# source:	big5	B5	Big5 HK/Traditional	Big5 HKSCS	B
# check tags ("B5", "B") for uniqueness
  (
    sed -e "/^#/ d" \
        -e "s/^\.*\([^ 	]*\)[ 	][ 	]*\([^ 	]*\)[ 	][ 	]*\([^	]*\)[ 	][ 	]*\([^	]*\)	*\([^	]*\).*/\2/" \
        -e t -e d charmaps.cfg
    sed -e "/^#/ d" \
        -e "s/^\.*\([^ 	]*\)[ 	][ 	]*\([^ 	]*\)[ 	][ 	]*\([^	]*\)[ 	][ 	]*\([^	]*\)	*\([^	]*\).*/\5/" \
        -e t -e d charmaps.cfg
  ) | grep . | sort | uniq -d |
  sed -e "s,^,[41m," -e "s,$,[0m," |
  if grep .
  then	echo ERROR: duplicate tags in charmaps.cfg
  	false
  else true
  fi
}


mkcharmaps () {
# charmaps.t:	charmaps.cfg
# from:		big5	B5	Big5 HK/Traditional	Big5 HKSCS	B
# generate:		{big5_table, & big5_table_len, "Big5 HKSCS", "B5", 'B'},
    sed -e "/^#/ d" \
        -e "/^++/ d" \
        -e "s,^!begin CJK,#ifdef use_CJKcharmaps," -e "s,^!end CJK,#endif," \
        -e "s/^\.*\([^ 	]*\)[ 	][ 	]*\([^ 	]*\)[ 	][ 	]*\([^	]*\)[ 	][ 	]*\([^	]*\)	*\([^	]*\).*/	{\1_table, \& \1_table_len, \"\4\", \"\2\", '\5'},/" \
        -e t -e d charmaps.cfg |
    sed -e "s/, ''//" |
    sed -e ": l" -e 's/^\([^-"]*\)-/\1_/g' -e "t l" > charmaps.t
}


mkextern () {
# charmaps.h:	charmaps.cfg
# from:		big5	B5	Big5 HK/Traditional	Big5 HKSCS	B
# generate:	extern struct encoding_table_entry big5_table [];
#		extern unsigned int big5_table_len;
    sed -e "/^[-+#]/ d" \
        -e "s,^!begin CJK,#ifdef use_CJKcharmaps," -e "s,^!end CJK,#endif," \
        -e "s/^\.*\([^ 	]*\)[ 	][ 	]*\([^ 	]*\)[ 	][ 	]*\([^ 	]*\).*/extern struct encoding_table_entry \1_table [];@extern unsigned int \1_table_len;/" \
        -e t -e d charmaps.cfg |
    tr '\055@' '_\n' > charmaps.h
}


mkmenu () {
# charemen.t:	charmaps.cfg
# from:		big5	B5	Big5 HK/Traditional	Big5 HKSCS	B
# generate:		{"Big5 HK/Traditional", select_encoding, "Big5 HKSCS", encodingon},
# from:		---- Group
# generate:		{"Group", separator, ""},
# from:		++++++++ Submenu
# generate:		{"submenu ...", opensubmenu_Submenu, "", onsubmenu_Submenu},
    sed -e "/^[#.]/ d" \
        -e "s,^!begin CJK,#ifdef use_CJKcharmaps," -e "s,^!end CJK,#endif," \
        -e '/^++/ s,[ /],_,g' \
        -e 's/^+++*_*\(.*\)_*/@	{label_\1, opensubmenu_\1, "", onsubmenu_\1, extra_\1},@++/' \
        -e '/^+-/ b' \
        -e 's/^--* *\(.*\) */@	{"\1", separator, ""},/' \
        -e t \
        -e "s/^\([^#	]*\)[ 	][ 	]*\([^	]*\)[ 	][ 	]*\([^	]*\)[ 	][ 	]*\([^	]*\)	*\([^	]*\).*/	{\"\3\", select_encoding, \"\4\", encodingon},/" \
        -e t -e d charmaps.cfg |
    tr '@' '\n' |
    sed -e '/^++/,/^+-/ d' > charemen.t
}


mksubmenus () {
# charesub.t:	charmaps.cfg
    egrep "^\+\+" charmaps.cfg |
    while read line
    do
	title=`echo $line |
		 sed -e 's,^+* *,,' -e 's, *$,,'`
	submenu=`echo $title | sed -e 's,[ /],_,g'`

	cat <</eoc
#define label_$submenu "$title"
#define extra_$submenu "▶"
#define title_$submenu "$title"

local int
	onsubitem_$submenu (item, i)
	menuitemtype * item;
	int i;
{
	return streq (item->hopitemname, get_text_encoding ());
}

local menuitemtype submenu_$submenu [] =
{
/eoc

	linepat=`echo "$line" | sed -e 's,/,.,g'`
	sed -e "1,/^$linepat/ d" -e "/^+-/,$ d" charmaps.cfg |
	sed -e "/^#/ d" -e "/^\.\./ d" \
	    -e 's/^--* *\(.*\) */@	{"\1", separator, ""},/' \
	    -e t \
	    -e "s/^\.*\([^#	]*\)[ 	][ 	]*\([^	]*\)[ 	][ 	]*\([^	]*\)[ 	][ 	]*\([^	]*\)	*\([^	]*\).*/	{\"\3\", select_encoding, \"\4\", onsubitem_$submenu},/" \
	    -e t -e d |
	    tr '@' '\n'

	cat <</eoc
};

local int
	onsubmenu_$submenu (item, i)
	menuitemtype * item;
	int i;
{
	int k;
	for (k = 0; k < arrlen (submenu_$submenu); k ++) {
		if (streq (submenu_$submenu [k].hopitemname, get_text_encoding ())) {
			return 1;
		}
	}
	return 0;
}

local void
	opensubmenu_$submenu (menu, i)
	menuitemtype * menu;
	int i;
{
	int column = last_popup_column + utf8_col_count (label_$submenu) + 2;
	int line = last_popup_line + i;
	(void) popup_menu (submenu_$submenu, arrlen (submenu_$submenu), column, line, title_$submenu, True, False, NIL_PTR);
}

/eoc

    done > charesub.t
}


case "$1" in
charmaps.t)	mkcharmaps;;
charmaps.h)	mkextern;;
charemen.t)	mkmenu;;
charesub.t)	mksubmenus;;
checktags)	checktags;;
esac
