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#![allow(dead_code)]
use crate::fs;
use crate::io::{self, Error, ErrorKind};
use crate::path::Path;
pub(crate) const NOT_FILE_ERROR: Error = Error::new_const(
ErrorKind::InvalidInput,
&"the source path is neither a regular file nor a symlink to a regular file",
);
pub fn copy(from: &Path, to: &Path) -> io::Result<u64> {
let mut reader = fs::File::open(from)?;
let metadata = reader.metadata()?;
if !metadata.is_file() {
return Err(NOT_FILE_ERROR);
}
let mut writer = fs::File::create(to)?;
let perm = metadata.permissions();
let ret = io::copy(&mut reader, &mut writer)?;
writer.set_permissions(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)
}
pub fn try_exists(path: &Path) -> io::Result<bool> {
match fs::metadata(path) {
Ok(_) => Ok(true),
Err(error) if error.kind() == io::ErrorKind::NotFound => Ok(false),
Err(error) => Err(error),
}
}