package main

import (
	"os"
	"path/filepath"
)

type RealWalker struct {
	path   string
	report chan int64
}

func (r *RealWalker) walkFunc(path string, info os.FileInfo, err error) error {
	switch mode := info.Mode(); {
	case mode.IsRegular():
		r.report <- info.Size()
	}
	return nil
}

func (r *RealWalker) Walk() {
	filepath.Walk(r.path, r.walkFunc)
}

func NewRealWalker(path string, report chan int64) *RealWalker {
	r := &RealWalker{path: path, report: report}
	return r
}