Some manual clippy fixes

clippy.toml

@@ -71,6 +71,7 @@ doc-valid-idents = [
   "OBJ",
   "OpenGL",
   "PyPI",
+  "QuickTime",
   "sRGB",
   "sRGBA",
   "WebGL",

src/mp4box/emsg.rs

@@ -132,8 +132,10 @@ fn read_null_terminated_utf8_string<R: Read + Seek>(reader: &mut R) -> Result<St
             break;
         }
     }
+    #[allow(unsafe_code)]
+    // SAFETY: we ensure there is exactly one nul-byte at the end of the slice
     if let Ok(str) = unsafe { CStr::from_bytes_with_nul_unchecked(&bytes) }.to_str() {
-        Ok(str.to_string())
+        Ok(str.to_owned())
     } else {
         Err(Error::InvalidData("invalid utf8"))
     }

src/mp4box/ilst.rs

@@ -22,11 +22,7 @@ impl IlstBox {
     }
 
     pub fn get_size(&self) -> u64 {
-        let mut size = HEADER_SIZE;
-        for item in self.items.values() {
-            size += item.get_size();
-        }
-        size
+        HEADER_SIZE + self.items.values().map(|item| item.get_size()).sum::<u64>()
     }
 }
 

src/mp4box/meta.rs

@@ -143,53 +143,47 @@ impl<R: Read + Seek> ReadBox<&mut R> for MetaBox {
 
         let mut ilst = None;
 
-        match hdlr.handler_type {
-            MDIR => {
-                while current < end {
-                    // Get box header.
-                    let header = BoxHeader::read(reader)?;
-                    let BoxHeader { name, size: s } = header;
-
-                    match name {
-                        BoxType::IlstBox => {
-                            ilst = Some(IlstBox::read_box(reader, s)?);
-                        }
-                        _ => {
-                            // XXX warn!()
-                            skip_box(reader, s)?;
-                        }
+        if hdlr.handler_type == MDIR {
+            while current < end {
+                // Get box header.
+                let header = BoxHeader::read(reader)?;
+                let BoxHeader { name, size: s } = header;
+
+                match name {
+                    BoxType::IlstBox => {
+                        ilst = Some(IlstBox::read_box(reader, s)?);
+                    }
+                    _ => {
+                        // XXX warn!()
+                        skip_box(reader, s)?;
                     }
-
-                    current = reader.stream_position()?;
                 }
 
-                Ok(Self::Mdir { ilst })
+                current = reader.stream_position()?;
             }
-            _ => {
-                let mut data = Vec::new();
-
-                while current < end {
-                    // Get box header.
-                    let header = BoxHeader::read(reader)?;
-                    let BoxHeader { name, size: s } = header;
-
-                    match name {
-                        BoxType::HdlrBox => {
-                            skip_box(reader, s)?;
-                        }
-                        _ => {
-                            let mut box_data = vec![0; (s - HEADER_SIZE) as usize];
-                            reader.read_exact(&mut box_data)?;
-
-                            data.push((name, box_data));
-                        }
-                    }
 
-                    current = reader.stream_position()?;
+            Ok(Self::Mdir { ilst })
+        } else {
+            let mut data = Vec::new();
+
+            while current < end {
+                // Get box header.
+                let header = BoxHeader::read(reader)?;
+                let BoxHeader { name, size: s } = header;
+
+                if name == BoxType::HdlrBox {
+                    skip_box(reader, s)?;
+                } else {
+                    let mut box_data = vec![0; (s - HEADER_SIZE) as usize];
+                    reader.read_exact(&mut box_data)?;
+
+                    data.push((name, box_data));
                 }
 
-                Ok(Self::Unknown { hdlr, data })
+                current = reader.stream_position()?;
             }
+
+            Ok(Self::Unknown { hdlr, data })
         }
     }
 }

src/mp4box/mod.rs

@@ -5,11 +5,12 @@
 //! * ISO/IEC 14496-17 - Streaming text format
 //! * [ISO 23009-1](https://www.iso.org/standard/79329.html) -Dynamic adaptive streaming over HTTP (DASH)
 //!
-//! http://developer.apple.com/documentation/QuickTime/QTFF/index.html
-//! http://www.adobe.com/devnet/video/articles/mp4_movie_atom.html
-//! http://mp4ra.org/#/atoms
+//! * <http://developer.apple.com/documentation/QuickTime/QTFF/index.html>
+//! * <http://www.adobe.com/devnet/video/articles/mp4_movie_atom.html>
+//! * <http://mp4ra.org/#/atoms>
 //!
 //! Supported Atoms:
+//! ```text
 //! ftyp
 //! moov
 //!     mvhd
@@ -54,7 +55,7 @@
 //!         trun
 //! mdat
 //! free
-//!
+//! ```
 
 use byteorder::{BigEndian, ReadBytesExt};
 use serde::Serialize;

src/reader.rs

@@ -417,15 +417,13 @@ impl Mp4 {
                 sample.offset = data_offset as u64;
             }
 
-            track.duration = if track.duration == 0 {
-                track
+            if track.duration == 0 {
+                track.duration = track
                     .samples
                     .last()
                     .map(|v| v.timestamp + v.duration)
-                    .unwrap_or_default()
-            } else {
-                track.duration
-            };
+                    .unwrap_or_default();
+            }
         }
 
         Ok(())
@@ -501,7 +499,6 @@ impl Track {
         } else if let Some(Hvc1Box { hvcc, .. }) = &sample_description.hvc1 {
             let mut codec = "hvc1".to_owned();
             match hvcc.general_profile_space {
-                0 => {}
                 1 => codec.push_str(".A"),
                 2 => codec.push_str(".B"),
                 3 => codec.push_str(".C"),
@@ -596,7 +593,7 @@ impl Mp4 {
         self.moov.udta.as_ref().and_then(|udta| {
             udta.meta.as_ref().and_then(|meta| match meta {
                 MetaBox::Mdir { ilst } => ilst.as_ref(),
-                _ => None,
+                MetaBox::Unknown { .. } => None,
             })
         })
     }