Fix more clippy warnings

Signed-off-by: Pragyan Poudyal <[email protected]>

Author: Johan-Liebert1

src/erofs/debug.rs

@@ -250,7 +250,7 @@ fn hexdump(f: &mut impl fmt::Write, data: &[u8], rel: usize) -> fmt::Result {
     };
     let end = start + data.len();
     let start_row = start / 16;
-    let end_row = (end + 15) / 16;
+    let end_row = end.div_ceil(16);
 
     for row in start_row..end_row {
         let row_start = row * 16;

src/erofs/writer.rs

@@ -251,9 +251,9 @@ impl<'a> Directory<'a> {
     }
 
     fn inode_meta(&self, block_offset: usize) -> (format::DataLayout, u32, u64, usize) {
-        let (layout, u) = if self.inline.len() == 0 {
+        let (layout, u) = if self.inline.is_empty() {
             (format::DataLayout::FlatPlain, block_offset as u32 / 4096)
-        } else if self.blocks.len() > 0 {
+        } else if !self.blocks.is_empty() {
             (format::DataLayout::FlatInline, block_offset as u32 / 4096)
         } else {
             (format::DataLayout::FlatInline, 0)

src/oci/mod.rs

@@ -253,7 +253,7 @@ impl<'repo> ImageOp<'repo> {
         let layers_to_chunks = chunks
             .iter()
             .enumerate()
-            .flat_map(|(i, chunk)| std::iter::repeat(i).take(chunk.len()).collect::<Vec<_>>())
+            .flat_map(|(i, chunk)| std::iter::repeat_n(i, chunk.len()).collect::<Vec<_>>())
             .collect::<Vec<_>>();
 
         encoder_threads = encoder_threads.min(chunks.len());