#!/usr/bin/perl
# mktable - generate:
#   1. struct     <def-file>_type
#   2. table      <def-file>_table
#   3. table size <def-file>_size
#   3. enum-list  <def-file>_enum, enumerator from given names
#   from one definition file
#
# definition file:
#   ^# hashes are allowed as comments in begining of line
#   ^# first line declares type-member pairs separated by slash
#   ^# typenames have to be in one part eg. "struct type" don't
#   ^# work, typedef these instead. 
#   ^      type1/member1 type2/memeber2
#   ^
#   ^# in data lines, exist first name of row and then members
#   ^# of struct in order. The name may not enclose in "'s althought
#   ^# its type is char *.
#   ^ name member1       member2  
#   ^ name ...           ...
#   ^ ...
#

if( ! $ARGV[0] ) {
    print "Usage: mktable definition-file\n";
    exit(2);
} else {
    $def = $ARGV[0];
}

open(DEF,$def) || die("Can't open ".$def);
$line = 0;
$elems = 0;
%table;

print "/* should not be modified */\n\n";
&loop;

sub loop {
    while(<DEF>) {
	chop;
	next if /^$/;
	next if /^[\t ]*#/;
	$line++;
	@tuple = split;
	shift @tuple if $tuple[0] eq "";
	if($line == 1) {
	    print "typedef struct {\n";
	    print "\tchar\t*key;\n";
	    foreach $field (@tuple) {
		# print "\"$field\"\n";
		last if $field eq "empty";
		($type,$mem) = split(/\//,$field);
		print "\t$type\t$mem;\n";
	    }
	    print "} ".$def."_type;\n\n";
	} else {
	    $elems++;
	    $key = shift(@tuple);
	    $val = join(":",@tuple);
	    $table{$key} = $val;
	}
    }
    # size
    print "#define\t".$def."_size\t$elems\n\n";
    # table
    print "/* sorted */\n";
    print $def."_type ".$def."_table[] = {\n";
    foreach $key (sort(keys(%table))) {
	print "\t\"$key\",\t";
	foreach $mem (split(/:/,$table{$key})) {
	    print "$mem,\t";
	}
	print "\n";
    }
    print "}; /* ".$def."_table */\n\n";
    # enum
    print "typedef enum {\n";
    foreach $key (sort(keys(%table))) {
	print "\tinput_".$key.",\n";
    }
    print "} "."$def"."_enum;\n\n";
}