chore: baseClass on Linux as well

Author: Dilawar Singh

src/common.rs

@@ -14,8 +14,8 @@ pub struct UsbDevice {
     pub description: Option<String>,
     /// Optional serial number
     pub serial_number: Option<String>,
-    /// Class of device.
-    pub base_class: DeviceBaseClass,
+    /// Class (bDeviceBaseClass) of device.
+    pub base_class: Option<DeviceBaseClass>,
 }
 
 /// See <https://www.usb.org/defined-class-codes>

src/linux.rs

@@ -1,4 +1,5 @@
 use crate::common::*;
+use std::convert::TryFrom;
 
 use std::error::Error;
 use udev::Enumerator;
@@ -62,12 +63,17 @@ pub fn enumerate_platform(vid: Option<u16>, pid: Option<u16>) -> Vec<UsbDevice>
                 .and_then(|s| s.to_str())
                 .map(|s| s.to_string());
 
+            let bclass = device
+                .attribute_value("bDeviceClass")
+                .and_then(|x| x.to_str()?.parse::<u8>().ok());
+
             output.push(UsbDevice {
                 id,
                 vendor_id,
                 product_id,
                 description,
                 serial_number,
+                base_class: bclass.and_then(|bc| DeviceBaseClass::try_from(bc).ok()),
             });
 
             Ok(())

src/macos.rs

@@ -104,7 +104,7 @@ pub fn enumerate_platform(vid: Option<u16>, pid: Option<u16>) -> Vec<UsbDevice>
                     product_id,
                     description,
                     serial_number,
-                    base_class: DeviceBaseClass::try_from(base_class)?,
+                    base_class: DeviceBaseClass::try_from(base_class).ok(),
                 });
 
                 Ok(())