How to read a file character by character in Go
Just read each rune one by one in the loop... See example
package main
import (
"bufio"
"fmt"
"io"
"log"
"strings"
)
var text = `
The quick brown fox jumps over the lazy dog #1.
Быстрая коричневая лиса перепрыгнула через ленивую собаку.
`
func main() {
r := bufio.NewReader(strings.NewReader(text))
for {
if c, sz, err := r.ReadRune(); err != nil {
if err == io.EOF {
break
} else {
log.Fatal(err)
}
} else {
fmt.Printf("%q [%d]\n", string(c), sz)
}
}
}
This code reads runes from the input. No cast is necessary, and it is iterator-like:
package main
import (
"bufio"
"fmt"
"strings"
)
func main() {
in := `{"sample":"json string"}`
s := bufio.NewScanner(strings.NewReader(in))
s.Split(bufio.ScanRunes)
for s.Scan() {
fmt.Println(s.Text())
}
}