package main

/*
#include <stdio.h>
#include <stdlib.h>
#include "urlscanner.h"
*/
import "C"
import (
	"html/template"
	"log"
	"strings"
)

type Link struct {
	Url   template.URL
	Text  template.HTML
	IsDir bool
}

func getToken(input string) []Link {
	var token C.int
	var ls []Link
	var l Link

	C.scan_string(C.CString(input))

	for token = C.yylex(); token != C.MYEOF; token = C.yylex() {

		if token == C.TOKEN_URL {
			// flex reads the href attr

			l.Url = template.URL(C.GoString(C.yylval))

			if strings.HasSuffix(C.GoString(C.yylval), "/") {
				l.IsDir = true
			}

		} else if token == C.TOKEN_TEXT {
			// flex reads the link description

			l.Text = template.HTML(C.GoString(C.yylval))
			ls = append(ls, l)
			l = Link{}
		} else {
			// lexical error

			l = Link{}
			log.Printf("Lexical Error on line %d \n", C.yylineno)
			continue
		}
	}

	return ls
}

// sort