Method tryDecodeBodyInOrder

req.go:100–143

nolint:nonamedreturns // gocritic unnamedResult prefers naming decoded body, decode count, and error

(
	originalBody *[]byte,
	encodings []string,
)

//nolint:nonamedreturns // gocritic unnamedResult prefers naming decoded body, decode count, and error
func (r *DefaultReq) tryDecodeBodyInOrder(
	originalBody *[]byte,
	encodings []string,
) (body []byte, decodesRealized uint8, err error) {
	request := &r.c.fasthttp.Request
	maxBodySize := r.c.app.config.BodyLimit
	for idx := range encodings {
		i := len(encodings) - 1 - idx
		encoding := encodings[i]
		decodesRealized++
		var decodeErr error
		switch encoding {
		case StrGzip, "x-gzip":
			body, decodeErr = request.BodyGunzipWithLimit(maxBodySize)
		case StrBr, StrBrotli:
			body, decodeErr = request.BodyUnbrotliWithLimit(maxBodySize)
		case StrDeflate:
			body, decodeErr = request.BodyInflateWithLimit(maxBodySize)
		case StrZstd:
			body, decodeErr = request.BodyUnzstdWithLimit(maxBodySize)
		case StrIdentity:
			body = request.Body()
		case StrCompress, "x-compress":
			return nil, decodesRealized - 1, ErrNotImplemented
		default:
			return nil, decodesRealized - 1, ErrUnsupportedMediaType
		}

		if decodeErr != nil {
			return nil, decodesRealized, decodeErr
		}

		if i > 0 && decodesRealized > 0 {
			if i == len(encodings)-1 {
				tempBody := request.Body()
				*originalBody = make([]byte, len(tempBody))
				copy(*originalBody, tempBody)
			}
			request.SetBodyRaw(body)
		}
	}

	return body, decodesRealized, nil
}

// Body contains the raw body submitted in a POST request.
// This method will decompress the body if the 'Content-Encoding' header is provided.