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use std::path::{self, Path, PathBuf};
use std::ffi::OsString;
use std::fs;
use std::io;
pub fn fix_windows_verbatim_for_gcc(p: &Path) -> PathBuf {
if !cfg!(windows) {
return p.to_path_buf();
}
let mut components = p.components();
let prefix = match components.next() {
Some(path::Component::Prefix(p)) => p,
_ => return p.to_path_buf(),
};
match prefix.kind() {
path::Prefix::VerbatimDisk(disk) => {
let mut base = OsString::from(format!("{}:", disk as char));
base.push(components.as_path());
PathBuf::from(base)
}
path::Prefix::VerbatimUNC(server, share) => {
let mut base = OsString::from(r"\\");
base.push(server);
base.push(r"\");
base.push(share);
base.push(components.as_path());
PathBuf::from(base)
}
_ => p.to_path_buf(),
}
}
pub enum LinkOrCopy {
Link,
Copy,
}
pub fn link_or_copy<P: AsRef<Path>, Q: AsRef<Path>>(p: P, q: Q) -> io::Result<LinkOrCopy> {
let p = p.as_ref();
let q = q.as_ref();
if q.exists() {
fs::remove_file(&q)?;
}
match fs::hard_link(p, q) {
Ok(()) => Ok(LinkOrCopy::Link),
Err(_) => {
match fs::copy(p, q) {
Ok(_) => Ok(LinkOrCopy::Copy),
Err(e) => Err(e),
}
}
}
}
#[derive(Debug)]
pub enum RenameOrCopyRemove {
Rename,
CopyRemove,
}
pub fn rename_or_copy_remove<P: AsRef<Path>, Q: AsRef<Path>>(p: P,
q: Q)
-> io::Result<RenameOrCopyRemove> {
let p = p.as_ref();
let q = q.as_ref();
match fs::rename(p, q) {
Ok(()) => Ok(RenameOrCopyRemove::Rename),
Err(_) => {
match fs::copy(p, q) {
Ok(_) => {
fs::remove_file(p)?;
Ok(RenameOrCopyRemove::CopyRemove)
}
Err(e) => Err(e),
}
}
}
}
pub fn create_dir_racy(path: &Path) -> io::Result<()> {
match fs::create_dir(path) {
Ok(()) => return Ok(()),
Err(ref e) if e.kind() == io::ErrorKind::AlreadyExists => return Ok(()),
Err(ref e) if e.kind() == io::ErrorKind::NotFound => {}
Err(e) => return Err(e),
}
match path.parent() {
Some(p) => try!(create_dir_racy(p)),
None => return Err(io::Error::new(io::ErrorKind::Other, "failed to create whole tree")),
}
match fs::create_dir(path) {
Ok(()) => Ok(()),
Err(ref e) if e.kind() == io::ErrorKind::AlreadyExists => Ok(()),
Err(e) => Err(e),
}
}