[libvirt] [rust PATCH v2 3/5] libvirt-rust: stream: automated lint

[Zixing Liu]

* used rustfmt to clean up the code

Signed-off-by: Zixing Liu <liushuyu at aosc.io>
---
 src/stream.rs | 97 +++++++++++++++++++++++++++++----------------------
 1 file changed, 56 insertions(+), 41 deletions(-)

diff --git a/src/stream.rs b/src/stream.rs
index 1ffd186..0d84fd7 100644
--- a/src/stream.rs
+++ b/src/stream.rs
@@ -18,8 +18,8 @@
 
 extern crate libc;
 
-use connect::Connect;
 use connect::sys::virConnectPtr;
+use connect::Connect;
 use std::convert::TryFrom;
 
 use error::Error;
@@ -33,28 +33,28 @@ pub mod sys {
 
 #[link(name = "virt")]
 extern "C" {
-    fn virStreamNew(c: virConnectPtr,
-                    flags: libc::c_uint)
-                     -> sys::virStreamPtr;
-    fn virStreamSend(c: sys::virStreamPtr,
-                     data: *const libc::c_char,
-                     nbytes: libc::size_t)
-                     -> libc::c_int;
-    fn virStreamRecv(c: sys::virStreamPtr,
-                     data: *mut libc::c_char,
-                     nbytes: libc::size_t)
-                     -> libc::c_int;
+    fn virStreamNew(c: virConnectPtr, flags: libc::c_uint) -> sys::virStreamPtr;
+    fn virStreamSend(
+        c: sys::virStreamPtr,
+        data: *const libc::c_char,
+        nbytes: libc::size_t,
+    ) -> libc::c_int;
+    fn virStreamRecv(
+        c: sys::virStreamPtr,
+        data: *mut libc::c_char,
+        nbytes: libc::size_t,
+    ) -> libc::c_int;
     fn virStreamFree(c: sys::virStreamPtr) -> libc::c_int;
     fn virStreamAbort(c: sys::virStreamPtr) -> libc::c_int;
     fn virStreamFinish(c: sys::virStreamPtr) -> libc::c_int;
-    fn virStreamEventAddCallback(c: sys::virStreamPtr,
-                         event: libc::c_int,
-                         callback: StreamEventCallback,
-                         opaque: *const libc::c_void,
-                         ff: FreeCallback)
-                         -> libc::c_int;
-    fn virStreamEventUpdateCallback(c: sys::virStreamPtr,
-                                    events: libc::c_int) -> libc::c_int;
+    fn virStreamEventAddCallback(
+        c: sys::virStreamPtr,
+        event: libc::c_int,
+        callback: StreamEventCallback,
+        opaque: *const libc::c_void,
+        ff: FreeCallback,
+    ) -> libc::c_int;
+    fn virStreamEventUpdateCallback(c: sys::virStreamPtr, events: libc::c_int) -> libc::c_int;
     fn virStreamEventRemoveCallback(c: sys::virStreamPtr) -> libc::c_int;
 }
 
@@ -71,14 +71,16 @@ pub type StreamEventCallback = extern "C" fn(sys::virStreamPtr, libc::c_int, *co
 pub type FreeCallback = extern "C" fn(*mut libc::c_void);
 
 // wrapper for callbacks
-extern "C" fn event_callback(c: sys::virStreamPtr, flags: libc::c_int, opaque: *const libc::c_void) {
-        let flags = flags as StreamFlags;
-        let shadow_self = unsafe {
-            &mut*(opaque as *mut Stream)
-        };
-        if let Some(callback) = &mut shadow_self.callback {
-            callback(&Stream::from_ptr(c), flags);
-        }
+extern "C" fn event_callback(
+    c: sys::virStreamPtr,
+    flags: libc::c_int,
+    opaque: *const libc::c_void,
+) {
+    let flags = flags as StreamFlags;
+    let shadow_self = unsafe { &mut *(opaque as *mut Stream) };
+    if let Some(callback) = &mut shadow_self.callback {
+        callback(&Stream::from_ptr(c), flags);
+    }
 }
 
 extern "C" fn event_free(_opaque: *mut libc::c_void) {}
@@ -93,16 +95,18 @@ impl Drop for Stream {
     fn drop(&mut self) {
         if self.ptr.is_some() {
             if let Err(e) = self.free() {
-                panic!("Unable to drop memory for Stream, code {}, message: {}",
-                       e.code,
-                       e.message)
+                panic!(
+                    "Unable to drop memory for Stream, code {}, message: {}",
+                    e.code, e.message
+                )
             }
         }
         if self.callback.is_some() {
             if let Err(e) = self.event_remove_callback() {
-                panic!("Unable to remove event callback for Stream, code {}, message: {}",
-                       e.code,
-                       e.message)
+                panic!(
+                    "Unable to remove event callback for Stream, code {}, message: {}",
+                    e.code, e.message
+                )
             }
         }
     }
@@ -120,7 +124,10 @@ impl Stream {
     }
 
     pub fn from_ptr(ptr: sys::virStreamPtr) -> Stream {
-        Stream { ptr: Some(ptr), callback: None }
+        Stream {
+            ptr: Some(ptr),
+            callback: None,
+        }
     }
 
     pub fn as_ptr(&self) -> sys::virStreamPtr {
@@ -160,7 +167,7 @@ impl Stream {
             virStreamSend(
                 self.as_ptr(),
                 data.as_ptr() as *mut libc::c_char,
-                data.len()
+                data.len(),
             )
         };
         usize::try_from(ret).map_err(|_| Error::new())
@@ -177,10 +184,20 @@ impl Stream {
         usize::try_from(ret).map_err(|_| Error::new())
     }
 
-    pub fn event_add_callback<F: 'static + FnMut(&Stream, StreamEventType)>(&mut self, events: StreamEventType, cb: F) -> Result<(), Error> {
+    pub fn event_add_callback<F: 'static + FnMut(&Stream, StreamEventType)>(
+        &mut self,
+        events: StreamEventType,
+        cb: F,
+    ) -> Result<(), Error> {
         let ret = unsafe {
             let ptr = &*self as *const _ as *const _;
-            virStreamEventAddCallback(self.as_ptr(), events as libc::c_int, event_callback, ptr, event_free)
+            virStreamEventAddCallback(
+                self.as_ptr(),
+                events as libc::c_int,
+                event_callback,
+                ptr,
+                event_free,
+            )
         };
         if ret == -1 {
             return Err(Error::new());
@@ -190,9 +207,7 @@ impl Stream {
     }
 
     pub fn event_update_callback(&self, events: StreamEventType) -> Result<(), Error> {
-        let ret = unsafe {
-            virStreamEventUpdateCallback(self.as_ptr(), events as libc::c_int)
-        };
+        let ret = unsafe { virStreamEventUpdateCallback(self.as_ptr(), events as libc::c_int) };
         if ret == -1 {
             return Err(Error::new());
         }
-- 
2.24.1