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Adding new hashing conditions #7
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,29 +1,54 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/hex" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "sync" | ||
|
|
||
| "golang.org/x/crypto/blake2b" | ||
| "github.com/zeebo/xxh3" | ||
| ) | ||
|
|
||
| const ( | ||
| bufferSize = 32 * 1024 | ||
| ) | ||
|
|
||
| var bufPool = sync.Pool{ | ||
| New: func() interface{} { | ||
| b := make([]byte, bufferSize) | ||
| return &b | ||
| }, | ||
| } | ||
|
|
||
| func createFileHash(filePath string) (string, error) { | ||
| file, err := os.Open(filePath) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to open file: %w", err) | ||
| } | ||
| defer file.Close() | ||
|
|
||
| hash, err := blake2b.New256(nil) | ||
| var hash string | ||
|
|
||
| hash, err = hashXXH3(file) | ||
|
|
||
| if err != nil { | ||
| return "", fmt.Errorf("failed to create BLAKE2b hash: %w", err) | ||
| return "", fmt.Errorf("hashing failed: %w", err) | ||
| } | ||
|
|
||
| if _, err := io.Copy(hash, file); err != nil { | ||
| return "", fmt.Errorf("failed to compute hash: %w", err) | ||
| return hash, nil | ||
|
|
||
| } | ||
|
|
||
| func hashXXH3(r io.Reader) (string, error) { | ||
| hasher := xxh3.New() | ||
| buffPtr := bufPool.Get().(*[]byte) | ||
| buff := *buffPtr | ||
| defer bufPool.Put(buffPtr) | ||
|
|
||
| if _, err := io.CopyBuffer(hasher, r, buff); err != nil { | ||
| return "", fmt.Errorf("XXH3 hashing failed: %w", err) | ||
| } | ||
|
|
||
| return hex.EncodeToString(hash.Sum(nil)), nil | ||
| hash := hasher.Sum128() | ||
| return fmt.Sprintf("%016x%016x", hash.Hi, hash.Lo), nil | ||
| } |
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