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https://github.com/bootandy/dust.git
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Roy Ivy III
7a38a26593
.# [why] "If you use `from_path()` on a directory, then subsequent queries using that handle will fail." Instead, use `from_path_any()` which supports opening files or directories. ref: "Struct winapi_util::Handle" from <https://docs.rs/crate/winapi-util>
66 lines
1.9 KiB
Rust
66 lines
1.9 KiB
Rust
use jwalk::DirEntry;
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#[allow(unused_imports)]
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use std::fs;
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use std::io;
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#[cfg(target_family = "unix")]
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fn get_block_size() -> u64 {
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// All os specific implementations of MetatdataExt seem to define a block as 512 bytes
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// https://doc.rust-lang.org/std/os/linux/fs/trait.MetadataExt.html#tymethod.st_blocks
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512
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}
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#[cfg(target_family = "unix")]
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pub fn get_metadata(d: &DirEntry, use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
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use std::os::unix::fs::MetadataExt;
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d.metadata.as_ref().unwrap().as_ref().ok().map(|md| {
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let inode = Some((md.ino(), md.dev()));
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if use_apparent_size {
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(md.len(), inode)
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} else {
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(md.blocks() * get_block_size(), inode)
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}
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})
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}
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#[cfg(target_family = "windows")]
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pub fn get_metadata(d: &DirEntry, _use_apparent_size: bool) -> Option<(u64, Option<(u64, u64)>)> {
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use winapi_util::file::information;
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use winapi_util::Handle;
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let h = Handle::from_path_any(d.path()).ok()?;
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let info = information(&h).ok()?;
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Some((
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info.file_size(),
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Some((info.file_index(), info.volume_serial_number())),
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))
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}
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#[cfg(all(not(target_family = "windows"), not(target_family = "unix")))]
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pub fn get_metadata(d: &DirEntry, _apparent: bool) -> Option<(u64, Option<(u64, u64)>)> {
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d.metadata
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.as_ref()
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.unwrap()
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.as_ref()
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.ok()
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.map(|md| (md.len(), None))
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}
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#[cfg(target_family = "unix")]
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pub fn get_filesystem(file_path: &str) -> Result<u64, io::Error> {
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use std::os::unix::fs::MetadataExt;
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let metadata = fs::metadata(file_path)?;
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Ok(metadata.dev())
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}
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#[cfg(target_family = "windows")]
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pub fn get_filesystem(file_path: &str) -> Result<u64, io::Error> {
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use winapi_util::file::information;
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use winapi_util::Handle;
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let h = Handle::from_path_any(file_path)?;
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let info = information(&h)?;
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Ok(info.volume_serial_number())
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}
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