rust/src/libstd/sys_common/fs.rs
David Tolnay 4436c9d354
Format libstd with rustfmt
This commit applies rustfmt with rust-lang/rust's default settings to
files in src/libstd *that are not involved in any currently open PR* to
minimize merge conflicts. THe list of files involved in open PRs was
determined by querying GitHub's GraphQL API with this script:
https://gist.github.com/dtolnay/aa9c34993dc051a4f344d1b10e4487e8

With the list of files from the script in outstanding_files, the
relevant commands were:

    $ find src/libstd -name '*.rs' \
        | xargs rustfmt --edition=2018 --unstable-features --skip-children
    $ rg libstd outstanding_files | xargs git checkout --

Repeating this process several months apart should get us coverage of
most of the rest of libstd.

To confirm no funny business:

    $ git checkout $THIS_COMMIT^
    $ git show --pretty= --name-only $THIS_COMMIT \
        | xargs rustfmt --edition=2018 --unstable-features --skip-children
    $ git diff $THIS_COMMIT  # there should be no difference
2019-11-29 18:43:27 -08:00

39 lines
1.1 KiB
Rust

#![allow(dead_code)] // not used on all platforms
use crate::fs;
use crate::io::{self, Error, ErrorKind};
use crate::path::Path;
pub fn copy(from: &Path, to: &Path) -> io::Result<u64> {
if !from.is_file() {
return Err(Error::new(
ErrorKind::InvalidInput,
"the source path is not an existing regular file",
));
}
let mut reader = fs::File::open(from)?;
let mut writer = fs::File::create(to)?;
let perm = reader.metadata()?.permissions();
let ret = io::copy(&mut reader, &mut writer)?;
fs::set_permissions(to, perm)?;
Ok(ret)
}
pub fn remove_dir_all(path: &Path) -> io::Result<()> {
let filetype = fs::symlink_metadata(path)?.file_type();
if filetype.is_symlink() { fs::remove_file(path) } else { remove_dir_all_recursive(path) }
}
fn remove_dir_all_recursive(path: &Path) -> io::Result<()> {
for child in fs::read_dir(path)? {
let child = child?;
if child.file_type()?.is_dir() {
remove_dir_all_recursive(&child.path())?;
} else {
fs::remove_file(&child.path())?;
}
}
fs::remove_dir(path)
}