%{
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "dtd.h"
#include "dtd_y.h"

#define yytext dtdtext
#define yyleng dtdleng
#define yylval dtdlval

extern int dtd_lineno;
%}
ws			[ \t]+
id			[_a-zA-Z1-9][_a-zA-Z1-9]*
nl			\n
%%
{ws} ;
^#.*{nl} {dtd_lineno++;};
--.*-- ;
\<!ELEMENT	{return START;}
\>			{return END;}
\#PCDATA	{return PCDATA;}
EMPTY		{return EMPTY;}
\| 			{return OR;}
,			{return NEXT;}
\(			{return OPEN;}
\)			{return CLOSE;}
\+			{return PLUS;}
\*			{return ASTARISK;}
\?			{return QUESTION;}
o			{return CHAR;}
O			{return CHAR;}
-			{return CHAR;}
{id}		{
	char *p, *s;
	if ((p = yylval.string = malloc(strlen(s = yytext)+1)) == NULL) {
		perror("malloc");
		exit(1);
	}
	
	while (*s)
		*p++ = tolower(*s++);
	*p = '\0';
	return ID;}
{nl}		{dtd_lineno++;}
%%