Using text/scanner in Go

Posted by GoDoc
Public (Editable by Users)

Package scanner provides a scanner and tokenizer for UTF-8-encoded text. It takes an io.Reader providing the source, which then can be tokenized through repeated calls to the Scan function. For compatibility with existing tools, the NUL character is not allowed. If the first character in the source is a UTF-8 encoded byte order mark (BOM), it is discarded.

Go
Edit 
package main

import (
	"fmt"
	"strings"
	"text/scanner"
)

func main() {
	const src = `
// This is scanned code.
if a > 10 {
	someParsable = text
}`

	var s scanner.Scanner
	s.Init(strings.NewReader(src))
	s.Filename = "example"
	for tok := s.Scan(); tok != scanner.EOF; tok = s.Scan() {
		fmt.Printf("%s: %s\n", s.Position, s.TokenText())
	}
}