codecrafters submit [skip ci]

1 files changed, 0 insertions, 140 deletions

diff --git a/cmd/mybittorrent/decoder.go b/cmd/mybittorrent/decoder.go
deleted file mode 100644
index 641b042..0000000
--- a/cmd/mybittorrent/decoder.go
+++ /dev/null
@@ -1,140 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"strconv"
-	"strings"
-	"unicode"
-)
-
-type Decoder struct {
-	raw          string
-	decoderFuncs []DecoderFunc
-}
-
-type DecoderFunc func(string) (any, int, error)
-
-func NewDecoder(raw string) *Decoder {
-	d := &Decoder{raw: raw}
-	return d.WithDecoderFunc(d.decodeSlice).WithDecoderFunc(d.decodeMap).WithDecoderFunc(d.decodeString).WithDecoderFunc(d.decodeInteger)
-}
-
-func (d *Decoder) WithDecoderFunc(f DecoderFunc) *Decoder {
-	d.decoderFuncs = append(d.decoderFuncs, f)
-	return d
-}
-
-func (d *Decoder) Decode() (any, error) {
-	for _, f := range d.decoderFuncs {
-		if r, l, err := f(d.raw); l > 0 || err != nil {
-			return r, nil
-		}
-	}
-
-	return nil, fmt.Errorf("failed to decode value: %s", d.raw)
-}
-
-func (d *Decoder) decodeString(chunk string) (any, int, error) {
-	if !unicode.IsDigit(rune(chunk[0])) {
-		return "", 0, nil
-	}
-
-	var firstColonIndex int
-
-	for i := 0; i < len(chunk); i++ {
-		if chunk[i] == ':' {
-			firstColonIndex = i
-			break
-		}
-	}
-
-	lengthStr := chunk[:firstColonIndex]
-
-	length, err := strconv.Atoi(lengthStr)
-	if err != nil {
-		return "", 0, err
-	}
-
-	val := chunk[firstColonIndex+1 : firstColonIndex+1+length]
-
-	return val, length + 1 + len(lengthStr), nil
-}
-
-func (d *Decoder) decodeInteger(chunk string) (any, int, error) {
-	if rune(chunk[0]) != 'i' {
-		return 0, 0, nil
-	}
-
-	num, err := strconv.Atoi(chunk[1:strings.IndexByte(chunk, 'e')])
-	if err != nil {
-		return 0, 0, err
-	}
-
-	return num, len(strconv.Itoa(num)) + 2, nil
-}
-
-func (d *Decoder) decodeSlice(chunk string) (any, int, error) {
-	if rune(chunk[0]) != 'l' {
-		return nil, 0, nil
-	}
-
-	if rune(chunk[1]) == 'e' {
-		return []any{}, 2, nil
-	}
-
-	result := make([]any, 0, 32)
-	offset := 1
-
-	for rune(chunk[offset]) != 'e' {
-		for _, f := range d.decoderFuncs {
-			if v, l, err := f(chunk[offset:]); l > 0 {
-				if err != nil {
-					return nil, 0, err
-				}
-				result = append(result, v)
-				offset += l
-				break
-			}
-		}
-	}
-
-	return result, offset + 1, nil
-}
-
-func (d *Decoder) decodeMap(chunk string) (any, int, error) {
-	if rune(chunk[0]) != 'd' {
-		return nil, 0, nil
-	}
-
-	if rune(chunk[1]) == 'e' {
-		return map[string]any{}, 2, nil
-	}
-
-	result := make(map[string]any, 32)
-	offset := 1
-
-	for rune(chunk[offset]) != 'e' {
-		key, keyLen, err := d.decodeString(chunk[offset:])
-		if err != nil {
-			return nil, 0, err
-		}
-
-		if keyLen == 0 {
-			return nil, 0, fmt.Errorf("invalid bencoded map key length")
-		}
-
-		for _, f := range d.decoderFuncs {
-			if v, l, err := f(chunk[offset+keyLen:]); l > 0 {
-				if err != nil {
-					return nil, 0, err
-				}
-
-				result[key.(string)] = v
-				offset += keyLen + l
-				break
-			}
-		}
-	}
-
-	return result, offset + 1, nil
-}