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mirror of https://github.com/go-gitea/gitea synced 2025-07-22 18:28:37 +00:00

Replace fmt.Sprintf with hex.EncodeToString (#21960)

`hex.EncodeToString` has better performance than `fmt.Sprintf("%x",
[]byte)`, we should use it as much as possible.

I'm not an extreme fan of performance, so I think there are some
exceptions:

- `fmt.Sprintf("%x", func(...)[N]byte())`
- We can't slice the function return value directly, and it's not worth
adding lines.
    ```diff
    func A()[20]byte { ... }
    - a := fmt.Sprintf("%x", A())
    - a := hex.EncodeToString(A()[:]) // invalid
    + tmp := A()
    + a := hex.EncodeToString(tmp[:])
    ```
- `fmt.Sprintf("%X", []byte)`
- `strings.ToUpper(hex.EncodeToString(bytes))` has even worse
performance.
This commit is contained in:
Jason Song
2022-11-28 19:19:18 +08:00
committed by GitHub
parent e81ccc406b
commit 9607750b5e
9 changed files with 30 additions and 28 deletions

View File

@@ -8,9 +8,9 @@ import (
"crypto/sha1"
"crypto/sha256"
"crypto/sha512"
"encoding/hex"
"encoding/xml"
"errors"
"fmt"
"io"
"net/http"
"path/filepath"
@@ -128,7 +128,7 @@ func serveMavenMetadata(ctx *context.Context, params parameters) {
tmp := sha512.Sum512(xmlMetadataWithHeader)
hash = tmp[:]
}
ctx.PlainText(http.StatusOK, fmt.Sprintf("%x", hash))
ctx.PlainText(http.StatusOK, hex.EncodeToString(hash))
return
}