#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <platon/html/read.h>

enum html_reads html_read(FILE *f, char *p, int len)
{
	int i=0;
	if(f==NULL||p==NULL)return(HTML_ERROR);

	while(1){
		if(i==len-1)break;
		p[i]=getc(f);

		if(feof(f))break;
		if(p[i]=='\0')break;

		if(p[0]==HTML_TAG_BEGIN){
			if(p[i]==HTML_TAG_END){
				if(i<=4||strncmp(p,"<!--",4)||(!strncmp(p,"<!--",4)&&!strncmp(p+i-2,"-->",3))){
					i++;
					break;
				}
			}
		}
		else{
			if(p[i]==HTML_TAG_BEGIN){
				ungetc(p[i],f);
				break;
			}
		}
		i++;
	}

	if(!i){
		/* free(p); */
		return(HTML_EOF);
	}
	else{
		p[i]='\0';
		return(p[0]==HTML_TAG_BEGIN?HTML_TAG:HTML_TEXT);
	}
}