8.go

package main

import (
	"bufio"
	"fmt"
	"os"
	"regexp"
)

var (
	literalSlash = regexp.MustCompile(`\\\\`)
	escapedQuote = regexp.MustCompile(`\\"`)
	hexLetter    = regexp.MustCompile(`\\x[a-f0-9]{2}`)
)

func main() {
	scanner := bufio.NewScanner(os.Stdin)

	codeChars := 0
	valueChars := 0

	for scanner.Scan() {

		line := scanner.Text()

		codeChars += len(line)

		// Surrounding Quotes
		line = line[1 : len(line)-1]

		// Slash Literals
		line = literalSlash.ReplaceAllString(line, "\\")

		// Escaped Quotes
		line = escapedQuote.ReplaceAllString(line, "\"")

		// Hex Letter
		line = hexLetter.ReplaceAllString(line, "!")

		valueChars += len(line)
	}

	fmt.Printf("codeChars: %d - valueChars: %d = %d\n", codeChars, valueChars, codeChars-valueChars)

}