testing golang bufio.Scanner

main.go

package main

import (
	"bufio"
	"flag"
	"fmt"
	"log"
	"os"
)

var ()

func main() {

	flag.Parse()

	// first arg is filename
	filename := flag.Arg(0)

	log.Printf("Preparing to open file: %s", filename)
	f, err := os.Open(filename) // This will block on a pipe with no data waiting
	defer f.Close()
	if err != nil {
		log.Fatal(err)
	}

	log.Printf("Preparing to Scan file")

	scanner := bufio.NewScanner(f)
	for scanner.Scan() {
		log.Println("Scan()")
		fmt.Println(scanner.Text())
	}

	if err = scanner.Err(); err != nil {
		log.Println("Got scanner.Err()")
		log.Fatal(err)
	}

	log.Println("Finished scanning file")
}