1 files changed, 0 insertions, 182 deletions
diff --git a/vendor/object-0.31.1/src/read/read_cache.rs b/vendor/object-0.31.1/src/read/read_cache.rs
deleted file mode 100644
index dfce1e1b1..000000000
--- a/vendor/object-0.31.1/src/read/read_cache.rs
+++ /dev/null
@@ -1,182 +0,0 @@
-use core::ops::Range;
-use std::boxed::Box;
-use std::cell::RefCell;
-use std::collections::hash_map::Entry;
-use std::collections::HashMap;
-use std::convert::TryInto;
-use std::io::{Read, Seek, SeekFrom};
-use std::mem;
-use std::vec::Vec;
-
-use crate::read::ReadRef;
-
-/// An implementation of `ReadRef` for data in a stream that implements
-/// `Read + Seek`.
-///
-/// Contains a cache of read-only blocks of data, allowing references to
-/// them to be returned. Entries in the cache are never removed.
-/// Entries are keyed on the offset and size of the read.
-/// Currently overlapping reads are considered separate reads.
-#[derive(Debug)]
-pub struct ReadCache<R: Read + Seek> {
-    cache: RefCell<ReadCacheInternal<R>>,
-}
-
-#[derive(Debug)]
-struct ReadCacheInternal<R: Read + Seek> {
-    read: R,
-    bufs: HashMap<(u64, u64), Box<[u8]>>,
-    strings: HashMap<(u64, u8), Box<[u8]>>,
-}
-
-impl<R: Read + Seek> ReadCache<R> {
-    /// Create an empty `ReadCache` for the given stream.
-    pub fn new(read: R) -> Self {
-        ReadCache {
-            cache: RefCell::new(ReadCacheInternal {
-                read,
-                bufs: HashMap::new(),
-                strings: HashMap::new(),
-            }),
-        }
-    }
-
-    /// Return an implementation of `ReadRef` that restricts reads
-    /// to the given range of the stream.
-    pub fn range(&self, offset: u64, size: u64) -> ReadCacheRange<'_, R> {
-        ReadCacheRange {
-            r: self,
-            offset,
-            size,
-        }
-    }
-
-    /// Free buffers used by the cache.
-    pub fn clear(&mut self) {
-        self.cache.borrow_mut().bufs.clear();
-    }
-
-    /// Unwrap this `ReadCache<R>`, returning the underlying reader.
-    pub fn into_inner(self) -> R {
-        self.cache.into_inner().read
-    }
-}
-
-impl<'a, R: Read + Seek> ReadRef<'a> for &'a ReadCache<R> {
-    fn len(self) -> Result<u64, ()> {
-        let cache = &mut *self.cache.borrow_mut();
-        cache.read.seek(SeekFrom::End(0)).map_err(|_| ())
-    }
-
-    fn read_bytes_at(self, offset: u64, size: u64) -> Result<&'a [u8], ()> {
-        if size == 0 {
-            return Ok(&[]);
-        }
-        let cache = &mut *self.cache.borrow_mut();
-        let buf = match cache.bufs.entry((offset, size)) {
-            Entry::Occupied(entry) => entry.into_mut(),
-            Entry::Vacant(entry) => {
-                let size = size.try_into().map_err(|_| ())?;
-                cache.read.seek(SeekFrom::Start(offset)).map_err(|_| ())?;
-                let mut bytes = vec![0; size].into_boxed_slice();
-                cache.read.read_exact(&mut bytes).map_err(|_| ())?;
-                entry.insert(bytes)
-            }
-        };
-        // Extend the lifetime to that of self.
-        // This is OK because we never mutate or remove entries.
-        Ok(unsafe { mem::transmute::<&[u8], &[u8]>(buf) })
-    }
-
-    fn read_bytes_at_until(self, range: Range<u64>, delimiter: u8) -> Result<&'a [u8], ()> {
-        let cache = &mut *self.cache.borrow_mut();
-        let buf = match cache.strings.entry((range.start, delimiter)) {
-            Entry::Occupied(entry) => entry.into_mut(),
-            Entry::Vacant(entry) => {
-                cache
-                    .read
-                    .seek(SeekFrom::Start(range.start))
-                    .map_err(|_| ())?;
-
-                let max_check: usize = (range.end - range.start).try_into().map_err(|_| ())?;
-                // Strings should be relatively small.
-                // TODO: make this configurable?
-                let max_check = max_check.min(4096);
-
-                let mut bytes = Vec::new();
-                let mut checked = 0;
-                loop {
-                    bytes.resize((checked + 256).min(max_check), 0);
-                    let read = cache.read.read(&mut bytes[checked..]).map_err(|_| ())?;
-                    if read == 0 {
-                        return Err(());
-                    }
-                    if let Some(len) = memchr::memchr(delimiter, &bytes[checked..][..read]) {
-                        bytes.truncate(checked + len);
-                        break entry.insert(bytes.into_boxed_slice());
-                    }
-                    checked += read;
-                    if checked >= max_check {
-                        return Err(());
-                    }
-                }
-            }
-        };
-        // Extend the lifetime to that of self.
-        // This is OK because we never mutate or remove entries.
-        Ok(unsafe { mem::transmute::<&[u8], &[u8]>(buf) })
-    }
-}
-
-/// An implementation of `ReadRef` for a range of data in a stream that
-/// implements `Read + Seek`.
-///
-/// Shares an underlying `ReadCache` with a lifetime of `'a`.
-#[derive(Debug)]
-pub struct ReadCacheRange<'a, R: Read + Seek> {
-    r: &'a ReadCache<R>,
-    offset: u64,
-    size: u64,
-}
-
-impl<'a, R: Read + Seek> Clone for ReadCacheRange<'a, R> {
-    fn clone(&self) -> Self {
-        Self {
-            r: self.r,
-            offset: self.offset,
-            size: self.size,
-        }
-    }
-}
-
-impl<'a, R: Read + Seek> Copy for ReadCacheRange<'a, R> {}
-
-impl<'a, R: Read + Seek> ReadRef<'a> for ReadCacheRange<'a, R> {
-    fn len(self) -> Result<u64, ()> {
-        Ok(self.size)
-    }
-
-    fn read_bytes_at(self, offset: u64, size: u64) -> Result<&'a [u8], ()> {
-        if size == 0 {
-            return Ok(&[]);
-        }
-        let end = offset.checked_add(size).ok_or(())?;
-        if end > self.size {
-            return Err(());
-        }
-        let r_offset = self.offset.checked_add(offset).ok_or(())?;
-        self.r.read_bytes_at(r_offset, size)
-    }
-
-    fn read_bytes_at_until(self, range: Range<u64>, delimiter: u8) -> Result<&'a [u8], ()> {
-        let r_start = self.offset.checked_add(range.start).ok_or(())?;
-        let r_end = self.offset.checked_add(range.end).ok_or(())?;
-        let bytes = self.r.read_bytes_at_until(r_start..r_end, delimiter)?;
-        let size = bytes.len().try_into().map_err(|_| ())?;
-        let end = range.start.checked_add(size).ok_or(())?;
-        if end > self.size {
-            return Err(());
-        }
-        Ok(bytes)
-    }
-}