108 lines
3.5 KiB
Go
108 lines
3.5 KiB
Go
// Copyright 2013 Google Inc. All rights reserved.
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// Copyright 2016 the gousb Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package usb
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import (
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"fmt"
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)
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// #include <libusb.h>
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import "C"
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// USBError is an error code returned by libusb.
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type USBError C.int
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// Error implements the error interface.
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func (e USBError) Error() string {
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return fmt.Sprintf("libusb: %s [code %d]", USBErrorString[e], e)
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}
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func fromUSBError(errno C.int) error {
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err := USBError(errno)
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if err == Success {
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return nil
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}
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return err
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}
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// Error codes defined by libusb.
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const (
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Success USBError = C.LIBUSB_SUCCESS
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ErrorIO USBError = C.LIBUSB_ERROR_IO
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ErrorInvalidParam USBError = C.LIBUSB_ERROR_INVALID_PARAM
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ErrorAccess USBError = C.LIBUSB_ERROR_ACCESS
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ErrorNoDevice USBError = C.LIBUSB_ERROR_NO_DEVICE
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ErrorNotFound USBError = C.LIBUSB_ERROR_NOT_FOUND
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ErrorBusy USBError = C.LIBUSB_ERROR_BUSY
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ErrorTimeout USBError = C.LIBUSB_ERROR_TIMEOUT
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ErrorOverflow USBError = C.LIBUSB_ERROR_OVERFLOW
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ErrorPipe USBError = C.LIBUSB_ERROR_PIPE
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ErrorInterrupted USBError = C.LIBUSB_ERROR_INTERRUPTED
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ErrorNoMem USBError = C.LIBUSB_ERROR_NO_MEM
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ErrorNotSupported USBError = C.LIBUSB_ERROR_NOT_SUPPORTED
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ErrorOther USBError = C.LIBUSB_ERROR_OTHER
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)
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var USBErrorString = map[USBError]string{
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Success: "success",
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ErrorIO: "i/o error",
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ErrorInvalidParam: "invalid param",
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ErrorAccess: "bad access",
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ErrorNoDevice: "no device",
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ErrorNotFound: "not found",
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ErrorBusy: "device or resource busy",
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ErrorTimeout: "timeout",
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ErrorOverflow: "overflow",
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ErrorPipe: "pipe error",
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ErrorInterrupted: "interrupted",
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ErrorNoMem: "out of memory",
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ErrorNotSupported: "not supported",
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ErrorOther: "unknown error",
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}
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// TransferStatus contains information about the result of a transfer.
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type TransferStatus uint8
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const (
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TransferCompleted TransferStatus = C.LIBUSB_TRANSFER_COMPLETED
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TransferError TransferStatus = C.LIBUSB_TRANSFER_ERROR
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TransferTimedOut TransferStatus = C.LIBUSB_TRANSFER_TIMED_OUT
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TransferCancelled TransferStatus = C.LIBUSB_TRANSFER_CANCELLED
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TransferStall TransferStatus = C.LIBUSB_TRANSFER_STALL
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TransferNoDevice TransferStatus = C.LIBUSB_TRANSFER_NO_DEVICE
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TransferOverflow TransferStatus = C.LIBUSB_TRANSFER_OVERFLOW
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)
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var transferStatusDescription = map[TransferStatus]string{
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TransferCompleted: "transfer completed without error",
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TransferError: "transfer failed",
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TransferTimedOut: "transfer timed out",
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TransferCancelled: "transfer was cancelled",
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TransferStall: "halt condition detected (endpoint stalled) or control request not supported",
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TransferNoDevice: "device was disconnected",
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TransferOverflow: "device sent more data than requested",
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}
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// String returns a human-readable transfer status.
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func (ts TransferStatus) String() string {
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return transferStatusDescription[ts]
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}
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// Error implements the error interface.
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func (ts TransferStatus) Error() string {
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return ts.String()
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}
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