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use super::HidDeviceInfo;
use libc::wchar_t;
use std::error::Error;
use std::fmt::{Display, Formatter, Result};
#[derive(Debug)]
pub enum HidError {
HidApiError { message: String },
HidApiErrorEmptyWithCause { cause: Box<dyn Error + Send + Sync> },
HidApiErrorEmpty,
FromWideCharError { wide_char: wchar_t },
InitializationError,
OpenHidDeviceError,
InvalidZeroSizeData,
IncompleteSendError { sent: usize, all: usize },
SetBlockingModeError { mode: &'static str },
OpenHidDeviceWithDeviceInfoError { device_info: Box<HidDeviceInfo> },
}
impl Display for HidError {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
match self {
HidError::HidApiError { message } => write!(f, "hidapi error: {}", message),
HidError::HidApiErrorEmptyWithCause { cause } => write!(
f,
"hidapi error: (could not get error message), caused by: {}",
cause
),
HidError::HidApiErrorEmpty => write!(f, "hidapi error: (could not get error message)"),
HidError::FromWideCharError { wide_char } => {
write!(f, "failed converting {:#X} to rust char", wide_char)
}
HidError::InitializationError => {
write!(f, "Failed to initialize hidapi (maybe initialized before?)")
}
HidError::OpenHidDeviceError => write!(f, "Failed opening hid device"),
HidError::InvalidZeroSizeData => write!(f, "Invalid data: size can not be 0"),
HidError::IncompleteSendError { sent, all } => write!(
f,
"Failed to send all data: only sent {} out of {} bytes",
sent, all
),
HidError::SetBlockingModeError { mode } => {
write!(f, "Can not set blocking mode to '{}'", mode)
}
HidError::OpenHidDeviceWithDeviceInfoError { device_info } => {
write!(f, "Can not open hid device with: {:?}", *device_info)
}
}
}
}
impl Error for HidError {
fn source(&self) -> Option<&(dyn Error + 'static)> {
match self {
HidError::HidApiErrorEmptyWithCause { cause } => Some(cause.as_ref()),
_ => None,
}
}
}