2024-09-disk-defrag/cmd/defrag/main.go

package main

import (
	"bytes"
	"fmt"
	"io"
	"os"

	"codeberg.org/danjones000/advent-of-code/2024-09/defrag"
)

func handleErr(err error) {
	if err == nil {
		return
	}

	fmt.Fprintln(os.Stderr, err)
	os.Exit(1)
}

func main() {
	name := os.Args[0]

	input, err := io.ReadAll(os.Stdin)
	handleErr(err)

	fmt.Fprintln(os.Stderr, "Welcome to ", name)
	input = bytes.TrimSpace(input)

	blocks, err := defrag.Blocks(input)
	handleErr(err)
	err = defrag.Defrag(blocks)
	handleErr(err)

	fmt.Println("From this")
	fmt.Printf("%s\n", input)

	fmt.Println("Got this")
	fmt.Printf("%s\n", blocks)
}