hidapi_rusb/
error.rs

1// **************************************************************************
2// Copyright (c) 2018 Roland Ruckerbauer All Rights Reserved.
3//
4// This file is part of hidapi-rs, based on hidapi-rs by Osspial
5// **************************************************************************
6
7use super::HidDeviceInfo;
8use libc::wchar_t;
9use std::error::Error;
10use std::fmt::{Display, Formatter, Result};
11
12#[derive(Debug)]
13pub enum HidError {
14    HidApiError {
15        message: String,
16    },
17    #[deprecated]
18    HidApiErrorEmptyWithCause {
19        cause: Box<dyn Error + Send + Sync>,
20    },
21    HidApiErrorEmpty,
22    FromWideCharError {
23        wide_char: wchar_t,
24    },
25    InitializationError,
26    #[deprecated]
27    OpenHidDeviceError,
28    InvalidZeroSizeData,
29    IncompleteSendError {
30        sent: usize,
31        all: usize,
32    },
33    SetBlockingModeError {
34        mode: &'static str,
35    },
36    OpenHidDeviceWithDeviceInfoError {
37        device_info: Box<HidDeviceInfo>,
38    },
39}
40
41impl Display for HidError {
42    fn fmt(&self, f: &mut Formatter<'_>) -> Result {
43        match self {
44            HidError::HidApiError { message } => write!(f, "hidapi error: {}", message),
45            HidError::HidApiErrorEmptyWithCause { cause } => write!(
46                f,
47                "hidapi error: (could not get error message), caused by: {}",
48                cause
49            ),
50            HidError::HidApiErrorEmpty => write!(f, "hidapi error: (could not get error message)"),
51            HidError::FromWideCharError { wide_char } => {
52                write!(f, "failed converting {:#X} to rust char", wide_char)
53            }
54            HidError::InitializationError => {
55                write!(f, "Failed to initialize hidapi (maybe initialized before?)")
56            }
57            HidError::OpenHidDeviceError => write!(f, "Failed opening hid device"),
58            HidError::InvalidZeroSizeData => write!(f, "Invalid data: size can not be 0"),
59            HidError::IncompleteSendError { sent, all } => write!(
60                f,
61                "Failed to send all data: only sent {} out of {} bytes",
62                sent, all
63            ),
64            HidError::SetBlockingModeError { mode } => {
65                write!(f, "Can not set blocking mode to '{}'", mode)
66            }
67            HidError::OpenHidDeviceWithDeviceInfoError { device_info } => {
68                write!(f, "Can not open hid device with: {:?}", *device_info)
69            }
70        }
71    }
72}
73
74impl Error for HidError {
75    fn source(&self) -> Option<&(dyn Error + 'static)> {
76        match self {
77            HidError::HidApiErrorEmptyWithCause { cause } => Some(cause.as_ref()),
78            _ => None,
79        }
80    }
81}
hidapi_rusb/error.rs

hidapi_rusb/
error.rs
