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Use CopyFileEx for fs::copy on Windows

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Adds a couple more tests for fs::copy

Signed-off-by: Peter Atashian <retep998@gmail.com>
This commit is contained in:
Peter Atashian 2015-07-10 04:54:00 -04:00
parent e6a9be10bc
commit 1d202692ec
4 changed files with 93 additions and 16 deletions
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18
src/libstd/sys/unix/fs.rs
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@ -14,7 +14,7 @@ use os::unix::prelude::*;
use ffi::{CString, CStr, OsString, OsStr};
use fmt;
use io::{self, Error, SeekFrom};
use io::{self, Error, ErrorKind, SeekFrom};
use libc::{self, c_int, size_t, off_t, c_char, mode_t};
use mem;
use path::{Path, PathBuf};
@ -516,3 +516,19 @@ pub fn canonicalize(p: &Path) -> io::Result<PathBuf> {
buf.truncate(p);
Ok(PathBuf::from(OsString::from_vec(buf)))
}
pub fn copy(from: &Path, to: &Path) -> io::Result<u64> {
use fs::{File, PathExt, set_permissions};
if !from.is_file() {
return Err(Error::new(ErrorKind::InvalidInput,
"the source path is not an existing file"))
}
let mut reader = try!(File::open(from));
let mut writer = try!(File::create(to));
let perm = try!(reader.metadata()).permissions();
let ret = try!(io::copy(&mut reader, &mut writer));
try!(set_permissions(to, perm));
Ok(ret)
}