Hello to all,
My first time posting questions here, so please bear with me, I'm willing
to learn.
I have a simple piece of code, which opens a file, reads the contents and
counts the number of lines in the file.
What I am attempting to do is to refactor the code. The error occurs when I
read the file, when the program terminates
zero lines were read.
I have attempted to resolve this problem to no avail, which is why I am
reaching out for help.
The code that is commented out works as expected.
package main
import (
"flag"
"bufio"
"fmt"
"log"
"os"
)
func cli() string {
flag.Parse()
return flag.Arg(0)
}
func openFile(s string, file *os.File) {
file, err := os.Open(s)
if err != nil {
log.Fatal(err)
}
defer file.Close()
}
func main() {
fname := cli()
/***
f, err := os.Open(fname)
if err != nil {
log.Fatal(err)
}
defer f.Close()
*/
var f *os.File
openFile(fname, f)
ireader := bufio.NewReader(f)
scanner := bufio.NewScanner(ireader)
lcounter := 0
for scanner.Scan() {
lcounter++
}
fmt.Printf("# lines read : %d\n", lcounter)
}
Thanks in advance, I do appreciate any help in resolving this.
THANX(MKD).
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