package reader

import (
	"bufio"
	"io"
)

type LineReader struct {
	filename  string
	reader    *bufio.Reader
	linecount int
}

func NewLineReader(filename string, reader io.Reader) *LineReader {
	return &LineReader{
		filename: filename,
		reader:   bufio.NewReader(reader),
	}
}

func (br *LineReader) ReadLine() (line string, linecount int, eof bool, err error) {
	var linebs []byte
	var isprefix bool = true
	for isprefix {
		linebs, isprefix, err = br.reader.ReadLine()
		if err != nil {
			if err == io.EOF {
				err = nil
				eof = true
				break
			}
			return
		}
		line += string(linebs)
	}
	br.linecount++
	linecount = br.linecount
	return
}