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use crate::Metadata;
use io_lifetimes::AsFilelike;
use std::fs::File;
use std::io::{self, IoSlice, IoSliceMut};
#[cfg(unix)]
use std::os::unix::fs::MetadataExt;
#[cfg(target_os = "wasi")]
use std::os::unix::fs::MetadataExt;
use system_interface::fs::FileIoExt;
#[cfg(feature = "io-streams")]
use {
crate::owned_streamer::OwnedStreamer,
cap_fs_ext::{OpenOptions, Reopen},
io_streams::StreamReader,
std::io::SeekFrom,
};
#[inline]
pub fn metadata<'a, Filelike: AsFilelike>(filelike: &Filelike) -> io::Result<Metadata> {
filelike
.as_filelike_view::<File>()
.metadata()
.map(|meta| Metadata {
len: meta.len(),
blksize: meta.blksize(),
})
}
#[inline]
pub fn read_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
buf: &mut [u8],
offset: u64,
) -> io::Result<usize> {
<File as FileIoExt>::read_at(&filelike.as_filelike_view::<File>(), buf, offset)
}
#[inline]
pub fn read_exact_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
buf: &mut [u8],
offset: u64,
) -> io::Result<()> {
<File as FileIoExt>::read_exact_at(&filelike.as_filelike_view::<File>(), buf, offset)
}
#[inline]
pub fn read_vectored_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
bufs: &mut [IoSliceMut],
offset: u64,
) -> io::Result<usize> {
<File as FileIoExt>::read_vectored_at(&filelike.as_filelike_view::<File>(), bufs, offset)
}
#[inline]
pub fn read_exact_vectored_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
bufs: &mut [IoSliceMut],
offset: u64,
) -> io::Result<()> {
<File as FileIoExt>::read_exact_vectored_at(&filelike.as_filelike_view::<File>(), bufs, offset)
}
#[inline]
pub fn is_read_vectored_at<'a, Filelike: AsFilelike>(filelike: &Filelike) -> bool {
<File as FileIoExt>::is_read_vectored_at(&filelike.as_filelike_view::<File>())
}
#[cfg(feature = "io-streams")]
pub fn read_via_stream_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
offset: u64,
) -> io::Result<StreamReader> {
let view = filelike.as_filelike_view::<File>();
if let Ok(file) = view.reopen(OpenOptions::new().read(true)) {
if offset != 0 {
file.seek(SeekFrom::Start(offset))?;
}
return Ok(StreamReader::file(file));
}
StreamReader::piped_thread(Box::new(OwnedStreamer::new(view.try_clone()?, offset)))
}
#[inline]
pub fn write_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
buf: &[u8],
offset: u64,
) -> io::Result<usize> {
<File as FileIoExt>::write_at(&filelike.as_filelike_view::<File>(), buf, offset)
}
#[inline]
pub fn write_all_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
buf: &[u8],
offset: u64,
) -> io::Result<()> {
<File as FileIoExt>::write_all_at(&filelike.as_filelike_view::<File>(), buf, offset)
}
#[inline]
pub fn write_vectored_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
bufs: &[IoSlice],
offset: u64,
) -> io::Result<usize> {
<File as FileIoExt>::write_vectored_at(&filelike.as_filelike_view::<File>(), bufs, offset)
}
#[inline]
pub fn write_all_vectored_at<'a, Filelike: AsFilelike>(
filelike: &Filelike,
bufs: &mut [IoSlice],
offset: u64,
) -> io::Result<()> {
<File as FileIoExt>::write_all_vectored_at(&filelike.as_filelike_view::<File>(), bufs, offset)
}
#[inline]
pub fn is_write_vectored_at<'a, Filelike: AsFilelike>(filelike: &Filelike) -> bool {
<File as FileIoExt>::is_write_vectored_at(&filelike.as_filelike_view::<File>())
}