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@@ -0,0 +1,93 @@
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+package main
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+
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+import (
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+ "bufio"
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+ "fmt"
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+ "log"
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+ "os"
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+)
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+
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+type move struct {
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+ what int
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+ from int
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+ to int
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+}
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+
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+func parseBoxes(line string, boxes [][]byte) [][]byte {
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+ counter := 0
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+ index := 0
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+ readLetter := false
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+
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+ for i := range line {
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+ if line[i] == '\n' {
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+ break
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+ }
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+
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+ counter++
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+ if counter > 3 {
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+ index++
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+ counter = 0
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+ }
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+
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+ if line[i] == '[' {
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+ readLetter = true
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+ continue
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+ }
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+
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+ if line[i] == ']' {
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+ readLetter = false
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+ continue
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+ }
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+
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+ if readLetter {
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+ edge := len(boxes) - 1
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+ if index > edge {
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+ for i := 0; i < index-edge; i++ {
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+ boxes = append(boxes, []byte{})
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+ }
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+ }
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+
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+ boxes[index] = append(boxes[index], line[i])
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+ }
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+ }
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+
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+ return boxes
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+}
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+
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+func readInput(file *os.File) ([][]byte, []move) {
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+ scanner := bufio.NewScanner(file)
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+ var moves []move
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+ var boxes [][]byte
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+ readBoxes := true
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+
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+ for scanner.Scan() {
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+ line := scanner.Text()
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+ if line == "" {
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+ readBoxes = false
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+ continue
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+ }
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+
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+ if readBoxes {
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+ boxes = parseBoxes(line, boxes)
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+ continue
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+ }
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+ }
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+
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+ return boxes, moves
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+}
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+
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+func main() {
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+ if len(os.Args) < 2 {
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+ log.Fatal("You need to specify a file!")
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+ }
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+
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+ filePath := os.Args[1]
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+ file, err := os.Open(filePath)
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+ if err != nil {
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+ log.Fatalf("Failed to open %s!\n", filePath)
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+
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+ }
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+
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+ boxes, _ := readInput(file)
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+ fmt.Println(boxes)
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+}
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