--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Cross-platform path manipulation.
+//!
+//! This module provides two types, `PathBuf` and `Path` (akin to `String` and
+//! `str`), for working with paths abstractly. These types are thin wrappers
+//! around `OsString` and `OsStr` respectively, meaning that they work directly
+//! on strings according to the local platform's path syntax.
+//!
+//! ## Simple usage
+//!
+//! Path manipulation involves both parsing components from slices and building
+//! new owned paths.
+//!
+//! To parse a path, you can create a `Path` slice from a `str`
+//! slice and start asking questions:
+//!
+//! ```rust
+//! use std::path::Path;
+//!
+//! let path = Path::new("/tmp/foo/bar.txt");
+//! let file = path.file_name();
+//! let extension = path.extension();
+//! let parent_dir = path.parent();
+//! ```
+//!
+//! To build or modify paths, use `PathBuf`:
+//!
+//! ```rust
+//! use std::path::PathBuf;
+//!
+//! let mut path = PathBuf::new("c:\\");
+//! path.push("windows");
+//! path.push("system32");
+//! path.set_extension("dll");
+//! ```
+//!
+//! ## Path components and normalization
+//!
+//! The path APIs are built around the notion of "components", which roughly
+//! correspond to the substrings between path separators (`/` and, on Windows,
+//! `\`). The APIs for path parsing are largely specified in terms of the path's
+//! components, so it's important to clearly understand how those are determined.
+//!
+//! A path can always be reconstructed into an equivalent path by putting
+//! together its components via `push`. Syntactically, the paths may differ by
+//! the normalization described below.
+//!
+//! ### Component types
+//!
+//! Components come in several types:
+//!
+//! * Normal components are the default: standard references to files or
+//! directories. The path `a/b` has two normal components, `a` and `b`.
+//!
+//! * Current directory components represent the `.` character. For example,
+//! `a/.` has a normal component `a` and a current directory component.
+//!
+//! * The root directory component represents a separator that designates
+//! starting from root. For example, `/a/b` has a root directory component
+//! followed by normal components `a` and `b`.
+//!
+//! On Windows, two additional component types come into play:
+//!
+//! * Prefix components, of which there is a large variety. For example, `C:`
+//! and `\\server\share` are prefixes. The path `C:windows` has a prefix
+//! component `C:` and a normal component `windows`; the path `C:\windows` has a
+//! prefix component `C:`, a root directory component, and a normal component
+//! `windows`.
+//!
+//! * Empty components, a special case for so-called "verbatim" paths where very
+//! little normalization is allowed. For example, `\\?\C:\` has a "verbatim"
+//! prefix `\\?\C:`, a root component, and an empty component (as a way of
+//! representing the trailing `\`. Such a trailing `\` is in fact the only
+//! situation in which an empty component is produced.
+//!
+//! ### Normalization
+//!
+//! Aside from splitting on the separator(s), there is a small amount of
+//! "normalization":
+//!
+//! * Repeated separators are ignored: `a/b` and `a//b` both have components `a`
+//! and `b`.
+//!
+//! * Paths ending in a separator are treated as if they has a current directory
+//! component at the end (or, in verbatim paths, an empty component). For
+//! example, while `a/b` has components `a` and `b`, the paths `a/b/` and
+//! `a/b/.` both have components `a`, `b`, and `.` (current directory). The
+//! reason for this normalization is that `a/b` and `a/b/` are treated
+//! differently in some contexts, but `a/b/` and `a/b/.` are always treated
+//! the same.
+//!
+//! No other normalization takes place by default. In particular, `a/./b/` and
+//! `a/b` are treated distinctly in terms of components, as are `a/c` and
+//! `a/b/../c`. Further normalization is possible to build on top of the
+//! components APIs, and will be included in this library very soon.
+
+#![unstable(feature = "path")]
+
+use core::prelude::*;
+
+use borrow::BorrowFrom;
+use cmp;
+use iter;
+use mem;
+use ops::{self, Deref};
+use string::CowString;
+use vec::Vec;
+use fmt;
+
+use ffi::{OsStr, OsString, AsOsStr};
+
+use self::platform::{is_sep, is_verbatim_sep, MAIN_SEP_STR, parse_prefix, Prefix};
+
+////////////////////////////////////////////////////////////////////////////////
+// GENERAL NOTES
+////////////////////////////////////////////////////////////////////////////////
+//
+// Parsing in this module is done by directly transmuting OsStr to [u8] slices,
+// taking advantage of the fact that OsStr always encodes ASCII characters
+// as-is. Eventually, this transmutation should be replaced by direct uses of
+// OsStr APIs for parsing, but it will take a while for those to become
+// available.
+
+////////////////////////////////////////////////////////////////////////////////
+// Platform-specific definitions
+////////////////////////////////////////////////////////////////////////////////
+
+// The following modules give the most basic tools for parsing paths on various
+// platforms. The bulk of the code is devoted to parsing prefixes on Windows.
+
+#[cfg(unix)]
+mod platform {
+ use core::prelude::*;
+ use ffi::OsStr;
+
+ #[inline]
+ pub fn is_sep(b: u8) -> bool {
+ b == b'/'
+ }
+
+ #[inline]
+ pub fn is_verbatim_sep(b: u8) -> bool {
+ b == b'/'
+ }
+
+ pub fn parse_prefix(_: &OsStr) -> Option<Prefix> {
+ None
+ }
+
+ #[derive(Copy, Clone, Show, Hash, PartialEq, Eq)]
+ pub struct Prefix<'a>;
+
+ impl<'a> Prefix<'a> {
+ #[inline]
+ pub fn len(&self) -> usize { 0 }
+ #[inline]
+ pub fn is_verbatim(&self) -> bool { false }
+ #[inline]
+ pub fn is_drive(&self) -> bool { false }
+ #[inline]
+ pub fn has_implicit_root(&self) -> bool { false }
+ }
+
+ pub const MAIN_SEP_STR: &'static str = "/";
+}
+
+#[cfg(windows)]
+mod platform {
+ use core::prelude::*;
+
+ use super::{Path, os_str_as_u8_slice, u8_slice_as_os_str};
+ use ffi::OsStr;
+ use ascii::*;
+
+ #[inline]
+ pub fn is_sep(b: u8) -> bool {
+ b == b'/' || b == b'\\'
+ }
+
+ #[inline]
+ pub fn is_verbatim_sep(b: u8) -> bool {
+ b == b'\\'
+ }
+
+ pub fn parse_prefix<'a>(path: &'a OsStr) -> Option<Prefix> {
+ use self::Prefix::*;
+ unsafe {
+ // The unsafety here stems from converting between &OsStr and &[u8]
+ // and back. This is safe to do because (1) we only look at ASCII
+ // contents of the encoding and (2) new &OsStr values are produced
+ // only from ASCII-bounded slices of existing &OsStr values.
+ let mut path = os_str_as_u8_slice(path);
+
+ if path.starts_with(br"\\") {
+ // \\
+ path = &path[2..];
+ if path.starts_with(br"?\") {
+ // \\?\
+ path = &path[2..];
+ if path.starts_with(br"UNC\") {
+ // \\?\UNC\server\share
+ path = &path[4..];
+ let (server, share) = match parse_two_comps(path, is_verbatim_sep) {
+ Some((server, share)) => (u8_slice_as_os_str(server),
+ u8_slice_as_os_str(share)),
+ None => (u8_slice_as_os_str(path),
+ u8_slice_as_os_str(&[])),
+ };
+ return Some(VerbatimUNC(server, share));
+ } else {
+ // \\?\path
+ let idx = path.position_elem(&b'\\');
+ if idx == Some(2) && path[1] == b':' {
+ let c = path[0];
+ if c.is_ascii() && (c as char).is_alphabetic() {
+ // \\?\C:\ path
+ let slice = u8_slice_as_os_str(&path[0..1]);
+ return Some(VerbatimDisk(slice));
+ }
+ }
+ let slice = &path[.. idx.unwrap_or(path.len())];
+ return Some(Verbatim(u8_slice_as_os_str(slice)));
+ }
+ } else if path.starts_with(b".\\") {
+ // \\.\path
+ path = &path[2..];
+ let slice = &path[.. path.position_elem(&b'\\').unwrap_or(path.len())];
+ return Some(DeviceNS(u8_slice_as_os_str(slice)));
+ }
+ match parse_two_comps(path, is_sep) {
+ Some((server, share)) if server.len() > 0 && share.len() > 0 => {
+ // \\server\share
+ return Some(UNC(u8_slice_as_os_str(server),
+ u8_slice_as_os_str(share)));
+ }
+ _ => ()
+ }
+ } else if path.len() > 1 && path[1] == b':' {
+ // C:
+ let c = path[0];
+ if c.is_ascii() && (c as char).is_alphabetic() {
+ return Some(Disk(u8_slice_as_os_str(&path[0..1])));
+ }
+ }
+ return None;
+ }
+
+ fn parse_two_comps(mut path: &[u8], f: fn(u8) -> bool) -> Option<(&[u8], &[u8])> {
+ let first = match path.iter().position(|x| f(*x)) {
+ None => return None,
+ Some(x) => &path[.. x]
+ };
+ path = &path[(first.len()+1)..];
+ let idx = path.iter().position(|x| f(*x));
+ let second = &path[.. idx.unwrap_or(path.len())];
+ Some((first, second))
+ }
+ }
+
+ /// Windows path prefixes.
+ ///
+ /// Windows uses a variety of path styles, including references to drive
+ /// volumes (like `C:`), network shared (like `\\server\share`) and
+ /// others. In addition, some path prefixes are "verbatim", in which case
+ /// `/` is *not* treated as a separator and essentially no normalization is
+ /// performed.
+ #[derive(Copy, Clone, Debug, Hash, Eq)]
+ pub enum Prefix<'a> {
+ /// Prefix `\\?\`, together with the given component immediately following it.
+ Verbatim(&'a OsStr),
+
+ /// Prefix `\\?\UNC\`, with the "server" and "share" components following it.
+ VerbatimUNC(&'a OsStr, &'a OsStr),
+
+ /// Prefix like `\\?\C:\`, for the given drive letter
+ VerbatimDisk(&'a OsStr),
+
+ /// Prefix `\\.\`, together with the given component immediately following it.
+ DeviceNS(&'a OsStr),
+
+ /// Prefix `\\server\share`, with the given "server" and "share" components.
+ UNC(&'a OsStr, &'a OsStr),
+
+ /// Prefix `C:` for the given disk drive.
+ Disk(&'a OsStr),
+ }
+
+ impl<'a> Prefix<'a> {
+ #[inline]
+ pub fn len(&self) -> usize {
+ use self::Prefix::*;
+ fn os_str_len(s: &OsStr) -> usize {
+ unsafe { os_str_as_u8_slice(s).len() }
+ }
+ match *self {
+ Verbatim(x) => 4 + os_str_len(x),
+ VerbatimUNC(x,y) => 8 + os_str_len(x) +
+ if os_str_len(y) > 0 { 1 + os_str_len(y) }
+ else { 0 },
+ VerbatimDisk(_) => 6,
+ UNC(x,y) => 2 + os_str_len(x) +
+ if os_str_len(y) > 0 { 1 + os_str_len(y) }
+ else { 0 },
+ DeviceNS(x) => 4 + os_str_len(x),
+ Disk(_) => 2
+ }
+
+ }
+
+ #[inline]
+ pub fn is_verbatim(&self) -> bool {
+ use self::Prefix::*;
+ match *self {
+ Verbatim(_) | VerbatimDisk(_) | VerbatimUNC(_, _) => true,
+ _ => false
+ }
+ }
+
+ #[inline]
+ pub fn is_drive(&self) -> bool {
+ match *self {
+ Prefix::Disk(_) => true,
+ _ => false,
+ }
+ }
+
+ #[inline]
+ pub fn has_implicit_root(&self) -> bool {
+ !self.is_drive()
+ }
+ }
+
+ impl<'a> ops::PartialEq for Prefix<'a> {
+ fn eq(&self, other: &Prefix<'a>) -> bool {
+ use self::Prefix::*;
+ match (*self, *other) {
+ (Verbatim(x), Verbatim(y)) => x == y,
+ (VerbatimUNC(x1, x2), Verbatim(y1, y2)) => x1 == y1 && x2 == y2,
+ (VerbatimDisk(x), VerbatimDisk(y)) =>
+ os_str_as_u8_slice(x).eq_ignore_ascii_case(os_str_as_u8_slice(y)),
+ (DeviceNS(x), DeviceNS(y)) => x == y,
+ (UNC(x1, x2), UNC(y1, y2)) => x1 == y1 && x2 == y2,
+ (Disk(x), Disk(y)) =>
+ os_str_as_u8_slice(x).eq_ignore_ascii_case(os_str_as_u8_slice(y)),
+ _ => false,
+ }
+ }
+ }
+
+ pub const MAIN_SEP_STR: &'static str = "\\";
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Misc helpers
+////////////////////////////////////////////////////////////////////////////////
+
+// Iterate through `iter` while it matches `prefix`; return `None` if `prefix`
+// is not a prefix of `iter`, otherwise return `Some(iter_after_prefix)` giving
+// `iter` after having exhausted `prefix`.
+fn iter_after<A, I, J>(mut iter: I, mut prefix: J) -> Option<I> where
+ I: Iterator<Item=A> + Clone, J: Iterator<Item=A>, A: PartialEq
+{
+ loop {
+ let mut iter_next = iter.clone();
+ match (iter_next.next(), prefix.next()) {
+ (Some(x), Some(y)) => {
+ if x != y { return None }
+ }
+ (Some(_), None) => return Some(iter),
+ (None, None) => return Some(iter),
+ (None, Some(_)) => return None,
+ }
+ iter = iter_next;
+ }
+}
+
+// See note at the top of this module to understand why these are used:
+fn os_str_as_u8_slice(s: &OsStr) -> &[u8] {
+ unsafe { mem::transmute(s) }
+}
+unsafe fn u8_slice_as_os_str(s: &[u8]) -> &OsStr {
+ mem::transmute(s)
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Cross-platform parsing
+////////////////////////////////////////////////////////////////////////////////
+
+/// Says whether the path ends in a separator character and therefore needs to
+/// be treated as if it ended with an additional `.`
+fn has_suffix(s: &[u8], prefix: Option<Prefix>) -> bool {
+ let (prefix_len, verbatim) = if let Some(p) = prefix {
+ (p.len(), p.is_verbatim())
+ } else { (0, false) };
+ if prefix_len > 0 && prefix_len == s.len() && !verbatim { return true; }
+ let mut splits = s[prefix_len..].split(|b| is_sep(*b));
+ let last = splits.next_back().unwrap();
+ let more = splits.next_back().is_some();
+ more && last == b""
+}
+
+/// Says whether the first byte after the prefix is a separator.
+fn has_physical_root(s: &[u8], prefix: Option<Prefix>) -> bool {
+ let path = if let Some(p) = prefix { &s[p.len()..] } else { s };
+ path.len() > 0 && is_sep(path[0])
+}
+
+fn parse_single_component(comp: &[u8]) -> Option<Component> {
+ match comp {
+ b"." => Some(Component::CurDir),
+ b".." => Some(Component::ParentDir),
+ b"" => None,
+ _ => Some(Component::Normal(unsafe { u8_slice_as_os_str(comp) }))
+ }
+}
+
+// basic workhorse for splitting stem and extension
+#[allow(unused_unsafe)] // FIXME
+fn split_file_at_dot(file: &OsStr) -> (Option<&OsStr>, Option<&OsStr>) {
+ unsafe {
+ if os_str_as_u8_slice(file) == b".." { return (Some(file), None) }
+
+ // The unsafety here stems from converting between &OsStr and &[u8]
+ // and back. This is safe to do because (1) we only look at ASCII
+ // contents of the encoding and (2) new &OsStr values are produced
+ // only from ASCII-bounded slices of existing &OsStr values.
+
+ let mut iter = os_str_as_u8_slice(file).rsplitn(1, |b| *b == b'.');
+ let after = iter.next();
+ let before = iter.next();
+ if before == Some(b"") {
+ (Some(file), None)
+ } else {
+ (before.map(|s| u8_slice_as_os_str(s)),
+ after.map(|s| u8_slice_as_os_str(s)))
+ }
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// The core iterators
+////////////////////////////////////////////////////////////////////////////////
+
+/// Component parsing works by a double-ended state machine; the cursors at the
+/// front and back of the path each keep track of what parts of the path have
+/// been consumed so far.
+///
+/// Going front to back, a path is made up of a prefix, a root component, a body
+/// (of normal components), and a suffix/emptycomponent (normalized `.` or ``
+/// for a path ending with the separator)
+#[derive(Copy, Clone, PartialEq, PartialOrd, Show)]
+enum State {
+ Prefix = 0, // c:
+ Root = 1, // /
+ Body = 2, // foo/bar/baz
+ Suffix = 3, // .
+ Done = 4,
+}
+
+/// A single component of a path.
+///
+/// See the module documentation for an in-depth explanation of components and
+/// their role in the API.
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Show)]
+pub enum Component<'a> {
+ /// A Windows path prefix, e.g. `C:` or `\server\share`
+ Prefix(&'a OsStr),
+
+ /// An empty component. Only used on Windows for the last component of
+ /// verbatim paths ending with a separator (e.g. the last component of
+ /// `\\?\C:\windows\` but not `\\?\C:\windows` or `C:\windows`).
+ Empty,
+
+ /// The root directory component, appears after any prefix and before anything else
+ RootDir,
+
+ /// A reference to the current directory, i.e. `.`
+ CurDir,
+
+ /// A reference to the parent directory, i.e. `..`
+ ParentDir,
+
+ /// A normal component, i.e. `a` and `b` in `a/b`
+ Normal(&'a OsStr),
+}
+
+impl<'a> Component<'a> {
+ /// Extract the underlying `OsStr` slice
+ pub fn as_os_str(self) -> &'a OsStr {
+ match self {
+ Component::Prefix(path) => path,
+ Component::Empty => OsStr::from_str(""),
+ Component::RootDir => OsStr::from_str(MAIN_SEP_STR),
+ Component::CurDir => OsStr::from_str("."),
+ Component::ParentDir => OsStr::from_str(".."),
+ Component::Normal(path) => path,
+ }
+ }
+}
+
+/// The core iterator giving the components of a path.
+///
+/// See the module documentation for an in-depth explanation of components and
+/// their role in the API.
+#[derive(Clone)]
+pub struct Components<'a> {
+ // The path left to parse components from
+ path: &'a [u8],
+
+ // The prefix as it was originally parsed, if any
+ prefix: Option<Prefix<'a>>,
+
+ // true if path *physically* has a root separator; for most Windows
+ // prefixes, it may have a "logical" rootseparator for the purposes of
+ // normalization, e.g. \\server\share == \\server\share\.
+ has_physical_root: bool,
+
+ // The iterator is double-ended, and these two states keep track of what has
+ // been produced from either end
+ front: State,
+ back: State,
+}
+
+/// An iterator over the components of a path, as `OsStr` slices.
+#[derive(Clone)]
+pub struct Iter<'a> {
+ inner: Components<'a>
+}
+
+impl<'a> Components<'a> {
+ // how long is the prefix, if any?
+ #[inline]
+ fn prefix_len(&self) -> usize {
+ self.prefix.as_ref().map(Prefix::len).unwrap_or(0)
+ }
+
+ #[inline]
+ fn prefix_verbatim(&self) -> bool {
+ self.prefix.as_ref().map(Prefix::is_verbatim).unwrap_or(false)
+ }
+
+ /// how much of the prefix is left from the point of view of iteration?
+ #[inline]
+ fn prefix_remaining(&self) -> usize {
+ if self.front == State::Prefix { self.prefix_len() }
+ else { 0 }
+ }
+
+ fn prefix_and_root(&self) -> usize {
+ let root = if self.front <= State::Root && self.has_physical_root { 1 } else { 0 };
+ self.prefix_remaining() + root
+ }
+
+ // is the iteration complete?
+ #[inline]
+ fn finished(&self) -> bool {
+ self.front == State::Done || self.back == State::Done || self.front > self.back
+ }
+
+ #[inline]
+ fn is_sep(&self, b: u8) -> bool {
+ if self.prefix_verbatim() {
+ is_verbatim_sep(b)
+ } else {
+ is_sep(b)
+ }
+ }
+
+ /// Extract a slice corresponding to the portion of the path remaining for iteration.
+ pub fn as_path(&self) -> &'a Path {
+ let mut comps = self.clone();
+ if comps.front == State::Body { comps.trim_left(); }
+ if comps.back == State::Body { comps.trim_right(); }
+ if comps.path.is_empty() && comps.front < comps.back && comps.back == State::Suffix {
+ Path::new(".")
+ } else {
+ unsafe { Path::from_u8_slice(comps.path) }
+ }
+ }
+
+ /// Is the *original* path rooted?
+ fn has_root(&self) -> bool {
+ if self.has_physical_root { return true }
+ if let Some(p) = self.prefix {
+ if p.has_implicit_root() { return true }
+ }
+ false
+ }
+
+ // parse a component from the left, saying how many bytes to consume to
+ // remove the component
+ fn parse_next_component(&self) -> (usize, Option<Component<'a>>) {
+ debug_assert!(self.front == State::Body);
+ let (extra, comp) = match self.path.iter().position(|b| self.is_sep(*b)) {
+ None => (0, self.path),
+ Some(i) => (1, &self.path[.. i]),
+ };
+ (comp.len() + extra, parse_single_component(comp))
+ }
+
+ // parse a component from the right, saying how many bytes to consume to
+ // remove the component
+ fn parse_next_component_back(&self) -> (usize, Option<Component<'a>>) {
+ debug_assert!(self.back == State::Body);
+ let start = self.prefix_and_root();
+ let (extra, comp) = match self.path[start..].iter().rposition(|b| self.is_sep(*b)) {
+ None => (0, &self.path[start ..]),
+ Some(i) => (1, &self.path[start + i + 1 ..]),
+ };
+ (comp.len() + extra, parse_single_component(comp))
+ }
+
+ // trim away repeated separators (i.e. emtpy components) on the left
+ fn trim_left(&mut self) {
+ while !self.path.is_empty() {
+ let (size, comp) = self.parse_next_component();
+ if comp.is_some() {
+ return;
+ } else {
+ self.path = &self.path[size ..];
+ }
+ }
+ }
+
+ // trim away repeated separators (i.e. emtpy components) on the right
+ fn trim_right(&mut self) {
+ while self.path.len() > self.prefix_and_root() {
+ let (size, comp) = self.parse_next_component_back();
+ if comp.is_some() {
+ return;
+ } else {
+ self.path = &self.path[.. self.path.len() - size];
+ }
+ }
+ }
+
+ /// Examine the next component without consuming it.
+ pub fn peek(&self) -> Option<Component<'a>> {
+ self.clone().next()
+ }
+}
+
+impl<'a> Iter<'a> {
+ /// Extract a slice corresponding to the portion of the path remaining for iteration.
+ pub fn as_path(&self) -> &'a Path {
+ self.inner.as_path()
+ }
+}
+
+impl<'a> Iterator for Iter<'a> {
+ type Item = &'a OsStr;
+
+ fn next(&mut self) -> Option<&'a OsStr> {
+ self.inner.next().map(Component::as_os_str)
+ }
+}
+
+impl<'a> DoubleEndedIterator for Iter<'a> {
+ fn next_back(&mut self) -> Option<&'a OsStr> {
+ self.inner.next_back().map(Component::as_os_str)
+ }
+}
+
+impl<'a> Iterator for Components<'a> {
+ type Item = Component<'a>;
+
+ fn next(&mut self) -> Option<Component<'a>> {
+ while !self.finished() {
+ match self.front {
+ State::Prefix if self.prefix_len() > 0 => {
+ self.front = State::Root;
+ debug_assert!(self.prefix_len() <= self.path.len());
+ let prefix = &self.path[.. self.prefix_len()];
+ self.path = &self.path[self.prefix_len() .. ];
+ return Some(Component::Prefix(unsafe { u8_slice_as_os_str(prefix) }))
+ }
+ State::Prefix => {
+ self.front = State::Root;
+ }
+ State::Root => {
+ self.front = State::Body;
+ if self.has_physical_root {
+ debug_assert!(self.path.len() > 0);
+ self.path = &self.path[1..];
+ return Some(Component::RootDir)
+ } else if let Some(p) = self.prefix {
+ if p.has_implicit_root() && !p.is_verbatim() {
+ return Some(Component::RootDir)
+ }
+ }
+ }
+ State::Body if !self.path.is_empty() => {
+ let (size, comp) = self.parse_next_component();
+ self.path = &self.path[size ..];
+ if comp.is_some() { return comp }
+ }
+ State::Body => {
+ self.front = State::Suffix;
+ }
+ State::Suffix => {
+ self.front = State::Done;
+ if self.prefix_verbatim() {
+ return Some(Component::Empty)
+ } else {
+ return Some(Component::CurDir)
+ }
+ }
+ State::Done => unreachable!()
+ }
+ }
+ None
+ }
+}
+
+impl<'a> DoubleEndedIterator for Components<'a> {
+ fn next_back(&mut self) -> Option<Component<'a>> {
+ while !self.finished() {
+ match self.back {
+ State::Suffix => {
+ self.back = State::Body;
+ if self.prefix_verbatim() {
+ return Some(Component::Empty)
+ } else {
+ return Some(Component::CurDir)
+ }
+ }
+ State::Body if self.path.len() > self.prefix_and_root() => {
+ let (size, comp) = self.parse_next_component_back();
+ self.path = &self.path[.. self.path.len() - size];
+ if comp.is_some() { return comp }
+ }
+ State::Body => {
+ self.back = State::Root;
+ }
+ State::Root => {
+ self.back = State::Prefix;
+ if self.has_physical_root {
+ self.path = &self.path[.. self.path.len() - 1];
+ return Some(Component::RootDir)
+ } else if let Some(p) = self.prefix {
+ if p.has_implicit_root() && !p.is_verbatim() {
+ return Some(Component::RootDir)
+ }
+ }
+ }
+ State::Prefix if self.prefix_len() > 0 => {
+ self.back = State::Done;
+ return Some(Component::Prefix(unsafe {
+ u8_slice_as_os_str(self.path)
+ }))
+ }
+ State::Prefix => {
+ self.back = State::Done;
+ return None
+ }
+ State::Done => unreachable!()
+ }
+ }
+ None
+ }
+}
+
+fn optional_path(path: &Path) -> Option<&Path> {
+ if path.as_u8_slice().is_empty() { None } else { Some(path) }
+}
+
+impl<'a> cmp::PartialEq for Components<'a> {
+ fn eq(&self, other: &Components<'a>) -> bool {
+ iter::order::eq(self.clone(), other.clone())
+ }
+}
+
+impl<'a> cmp::Eq for Components<'a> {}
+
+impl<'a> cmp::PartialOrd for Components<'a> {
+ fn partial_cmp(&self, other: &Components<'a>) -> Option<cmp::Ordering> {
+ iter::order::partial_cmp(self.clone(), other.clone())
+ }
+}
+
+impl<'a> cmp::Ord for Components<'a> {
+ fn cmp(&self, other: &Components<'a>) -> cmp::Ordering {
+ iter::order::cmp(self.clone(), other.clone())
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Basic types and traits
+////////////////////////////////////////////////////////////////////////////////
+
+/// An owned, mutable path (akin to `String`).
+///
+/// This type provides methods like `push` and `set_extension` that mutate the
+/// path in place. It also implements `Deref` to `Path`, meaning that all
+/// methods on `Path` slices are available on `PathBuf` values as well.
+///
+/// More details about the overall approach can be found in
+/// the module documentation.
+///
+/// # Example
+///
+/// ```rust
+/// use std::path::PathBuf;
+///
+/// let mut path = PathBuf::new("c:\\");
+/// path.push("windows");
+/// path.push("system32");
+/// path.set_extension("dll");
+/// ```
+#[derive(Clone, Hash)]
+pub struct PathBuf {
+ inner: OsString
+}
+
+impl PathBuf {
+ fn as_mut_vec(&mut self) -> &mut Vec<u8> {
+ unsafe { mem::transmute(self) }
+ }
+
+ /// Allocate a `PathBuf` with initial contents given by the
+ /// argument.
+ pub fn new<S: ?Sized + AsOsStr>(s: &S) -> PathBuf {
+ PathBuf { inner: s.as_os_str().to_os_string() }
+ }
+
+ /// Extend `self` with `path`.
+ ///
+ /// If `path` is absolute, it replaces the current path.
+ ///
+ /// On Windows:
+ ///
+ /// * if `path` has a root but no prefix (e.g. `\windows`), it
+ /// replaces everything except for the prefix (if any) of `self`.
+ /// * if `path` has a prefix but no root, it replaces `self.
+ pub fn push<P: ?Sized>(&mut self, path: &P) where P: AsPath {
+ // in general, a separator is needed if the rightmost byte is not a separator
+ let mut need_sep = self.as_mut_vec().last().map(|c| !is_sep(*c)).unwrap_or(false);
+
+ // in the special case of `C:` on Windows, do *not* add a separator
+ {
+ let comps = self.components();
+ if comps.prefix_len() > 0 &&
+ comps.prefix_len() == comps.path.len() &&
+ comps.prefix.unwrap().is_drive()
+ {
+ need_sep = false
+ }
+ }
+
+ let path = path.as_path();
+
+ // absolute `path` replaces `self`
+ if path.is_absolute() || path.prefix().is_some() {
+ self.as_mut_vec().truncate(0);
+
+ // `path` has a root but no prefix, e.g. `\windows` (Windows only)
+ } else if path.has_root() {
+ let prefix_len = self.components().prefix_remaining();
+ self.as_mut_vec().truncate(prefix_len);
+
+ // `path` is a pure relative path
+ } else if need_sep {
+ self.inner.push_os_str(OsStr::from_str(MAIN_SEP_STR));
+ }
+
+ self.inner.push_os_str(path.as_os_str());
+ }
+
+ /// Truncate `self` to `self.parent()`.
+ ///
+ /// Returns `None` and does nothing if `self.parent()` is `None`.
+ pub fn pop(&mut self) -> bool {
+ match self.parent().map(|p| p.as_u8_slice().len()) {
+ Some(len) => {
+ self.as_mut_vec().truncate(len);
+ true
+ }
+ None => false
+ }
+ }
+
+ /// Updates `self.file_name()` to `file_name`.
+ ///
+ /// If `self.file_name()` was `None`, this is equivalent to pushing
+ /// `file_name`.
+ ///
+ /// # Examples
+ ///
+ /// ```rust
+ /// use std::path::{Path, PathBuf};
+ ///
+ /// let mut buf = PathBuf::new("/foo/");
+ /// assert!(buf.file_name() == None);
+ /// buf.set_file_name("bar");
+ /// assert!(buf == PathBuf::new("/foo/bar"));
+ /// assert!(buf.file_name().is_some());
+ /// buf.set_file_name("baz.txt");
+ /// assert!(buf == PathBuf::new("/foo/baz.txt"));
+ /// ```
+ pub fn set_file_name<S: ?Sized>(&mut self, file_name: &S) where S: AsOsStr {
+ if self.file_name().is_some() && !self.pop() {
+ // Given that there is a file name, this is reachable only for
+ // Windows paths like c:file or paths like `foo`, but not `c:\` or
+ // `/`.
+ let prefix_len = self.components().prefix_remaining();
+ self.as_mut_vec().truncate(prefix_len);
+ }
+ self.push(file_name.as_os_str());
+ }
+
+ /// Updates `self.extension()` to `extension`.
+ ///
+ /// If `self.file_name()` is `None`, does nothing and returns `false`.
+ ///
+ /// Otherwise, returns `tru`; if `self.exension()` is `None`, the extension
+ /// is added; otherwise it is replaced.
+ pub fn set_extension<S: ?Sized + AsOsStr>(&mut self, extension: &S) -> bool {
+ if self.file_name().is_none() { return false; }
+
+ let mut stem = match self.file_stem() {
+ Some(stem) => stem.to_os_string(),
+ None => OsString::from_str(""),
+ };
+
+ let extension = extension.as_os_str();
+ if os_str_as_u8_slice(extension).len() > 0 {
+ stem.push_os_str(OsStr::from_str("."));
+ stem.push_os_str(extension.as_os_str());
+ }
+ self.set_file_name(&stem);
+
+ true
+ }
+}
+
+impl<'a, P: ?Sized + 'a> iter::FromIterator<&'a P> for PathBuf where P: AsPath {
+ fn from_iter<I: Iterator<Item = &'a P>>(iter: I) -> PathBuf {
+ let mut buf = PathBuf::new("");
+ buf.extend(iter);
+ buf
+ }
+}
+
+impl<'a, P: ?Sized + 'a> iter::Extend<&'a P> for PathBuf where P: AsPath {
+ fn extend<I: Iterator<Item = &'a P>>(&mut self, iter: I) {
+ for p in iter {
+ self.push(p)
+ }
+ }
+}
+
+impl fmt::Debug for PathBuf {
+ fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+ fmt::Debug::fmt(&**self, formatter)
+ }
+}
+
+impl ops::Deref for PathBuf {
+ type Target = Path;
+
+ fn deref(&self) -> &Path {
+ unsafe { mem::transmute(&self.inner[]) }
+ }
+}
+
+impl BorrowFrom<PathBuf> for Path {
+ fn borrow_from(owned: &PathBuf) -> &Path {
+ owned.deref()
+ }
+}
+
+impl cmp::PartialEq for PathBuf {
+ fn eq(&self, other: &PathBuf) -> bool {
+ self.components() == other.components()
+ }
+}
+
+impl cmp::Eq for PathBuf {}
+
+impl cmp::PartialOrd for PathBuf {
+ fn partial_cmp(&self, other: &PathBuf) -> Option<cmp::Ordering> {
+ self.components().partial_cmp(&other.components())
+ }
+}
+
+impl cmp::Ord for PathBuf {
+ fn cmp(&self, other: &PathBuf) -> cmp::Ordering {
+ self.components().cmp(&other.components())
+ }
+}
+
+/// A slice of a path (akin to `str`).
+///
+/// This type supports a number of operations for inspecting a path, including
+/// breaking the path into its components (separated by `/` or `\`, depending on
+/// the platform), extracting the file name, determining whether the path is
+/// absolute, and so on. More details about the overall approach can be found in
+/// the module documentation.
+///
+/// This is an *unsized* type, meaning that it must always be used with behind a
+/// pointer like `&` or `Box`.
+///
+/// # Example
+///
+/// ```rust
+/// use std::path::Path;
+///
+/// let path = Path::new("/tmp/foo/bar.txt");
+/// let file = path.file_name();
+/// let extension = path.extension();
+/// let parent_dir = path.parent();
+/// ```
+///
+pub struct Path {
+ inner: OsStr
+}
+
+impl Path {
+ // The following (private!) function allows construction of a path from a u8
+ // slice, which is only safe when it is known to follow the OsStr encoding.
+ unsafe fn from_u8_slice(s: &[u8]) -> &Path {
+ mem::transmute(s)
+ }
+ // The following (private!) function reveals the byte encoding used for OsStr.
+ fn as_u8_slice(&self) -> &[u8] {
+ unsafe { mem::transmute(self) }
+ }
+
+ /// Directly wrap a string slice as a `Path` slice.
+ ///
+ /// This is a cost-free conversion.
+ pub fn new<S: ?Sized + AsOsStr>(s: &S) -> &Path {
+ unsafe { mem::transmute(s.as_os_str()) }
+ }
+
+ /// Yield a `&str` slice if the `Path` is valid unicode.
+ ///
+ /// This conversion may entail doing a check for UTF-8 validity.
+ pub fn to_str(&self) -> Option<&str> {
+ self.inner.to_str()
+ }
+
+ /// Convert a `Path` to a `CowString`.
+ ///
+ /// Any non-Unicode sequences are replaced with U+FFFD REPLACEMENT CHARACTER.
+ pub fn to_string_lossy(&self) -> CowString {
+ self.inner.to_string_lossy()
+ }
+
+ /// Convert a `Path` to an owned `PathBuf`.
+ pub fn to_path_buf(&self) -> PathBuf {
+ PathBuf::new(self)
+ }
+
+ /// A path is *absolute* if it is indepedent of the current directory.
+ ///
+ /// * On Unix, a path is absolute if it starts with the root, so
+ /// `is_absolute` and `has_root` are equivalent.
+ ///
+ /// * On Windows, a path is absolute if it has a prefix and starts with the
+ /// root: `c:\windows` is absolute, while `c:temp` and `\temp` are not. In
+ /// other words, `path.is_absolute() == path.prefix().is_some() && path.has_root()`.
+ pub fn is_absolute(&self) -> bool {
+ self.has_root() &&
+ (cfg!(unix) || self.prefix().is_some())
+ }
+
+ /// A path is *relative* if it is not absolute.
+ pub fn is_relative(&self) -> bool {
+ !self.is_absolute()
+ }
+
+ /// Returns the *prefix* of a path, if any.
+ ///
+ /// Prefixes are relevant only for Windows paths, and consist of volumes
+ /// like `C:`, UNC prefixes like `\\server`, and others described in more
+ /// detail in `std::os::windows::PathExt`.
+ pub fn prefix(&self) -> Option<&Path> {
+ let iter = self.components();
+ optional_path(unsafe {
+ Path::from_u8_slice(
+ &self.as_u8_slice()[.. iter.prefix_remaining()])
+ })
+ }
+
+ /// A path has a root if the body of the path begins with the directory separator.
+ ///
+ /// * On Unix, a path has a root if it begins with `/`.
+ ///
+ /// * On Windows, a path has a root if it:
+ /// * has no prefix and begins with a separator, e.g. `\\windows`
+ /// * has a prefix followed by a separator, e.g. `c:\windows` but not `c:windows`
+ /// * has any non-disk prefix, e.g. `\\server\share`
+ pub fn has_root(&self) -> bool {
+ self.components().has_root()
+ }
+
+ /// The path without its final component.
+ ///
+ /// Does nothing, returning `None` if the path consists of just a prefix
+ /// and/or root directory reference.
+ ///
+ /// # Examples
+ ///
+ /// ```rust
+ /// use std::path::Path;
+ ///
+ /// let path = Path::new("/foo/bar");
+ /// let foo = path.parent().unwrap();
+ /// assert!(foo == Path::new("/foo"));
+ /// let root = foo.parent().unwrap();
+ /// assert!(root == Path::new("/"));
+ /// assert!(root.parent() == None);
+ /// ```
+ pub fn parent(&self) -> Option<&Path> {
+ let mut comps = self.components();
+ let comp = comps.next_back();
+ let rest = optional_path(comps.as_path());
+
+ match (comp, comps.next_back()) {
+ (Some(Component::CurDir), Some(Component::RootDir)) => None,
+ (Some(Component::CurDir), Some(Component::Prefix(_))) => None,
+ (Some(Component::Empty), Some(Component::RootDir)) => None,
+ (Some(Component::Empty), Some(Component::Prefix(_))) => None,
+ (Some(Component::Prefix(_)), None) => None,
+ (Some(Component::RootDir), Some(Component::Prefix(_))) => None,
+ _ => rest
+ }
+ }
+
+ /// The final component of the path, if it is a normal file.
+ ///
+ /// If the path terminates in `.`, `..`, or consists solely or a root of
+ /// prefix, `file` will return `None`.
+ pub fn file_name(&self) -> Option<&OsStr> {
+ self.components().next_back().and_then(|p| match p {
+ Component::Normal(p) => Some(p.as_os_str()),
+ _ => None
+ })
+ }
+
+ /// Returns a path that, when joined onto `base`, yields `self`.
+ pub fn relative_from<'a, P: ?Sized>(&'a self, base: &'a P) -> Option<&Path> where
+ P: AsPath
+ {
+ iter_after(self.components(), base.as_path().components()).map(|c| c.as_path())
+ }
+
+ /// Determines whether `base` is a prefix of `self`.
+ pub fn starts_with<P: ?Sized>(&self, base: &P) -> bool where P: AsPath {
+ iter_after(self.components(), base.as_path().components()).is_some()
+ }
+
+ /// Determines whether `base` is a suffix of `self`.
+ pub fn ends_with<P: ?Sized>(&self, child: &P) -> bool where P: AsPath {
+ iter_after(self.components().rev(), child.as_path().components().rev()).is_some()
+ }
+
+ /// Extract the stem (non-extension) portion of `self.file()`.
+ ///
+ /// The stem is:
+ ///
+ /// * None, if there is no file name;
+ /// * The entire file name if there is no embedded `.`;
+ /// * The entire file name if the file name begins with `.` and has no other `.`s within;
+ /// * Otherwise, the portion of the file name before the final `.`
+ pub fn file_stem(&self) -> Option<&OsStr> {
+ self.file_name().map(split_file_at_dot).and_then(|(before, after)| before.or(after))
+ }
+
+ /// Extract the extension of `self.file()`, if possible.
+ ///
+ /// The extension is:
+ ///
+ /// * None, if there is no file name;
+ /// * None, if there is no embedded `.`;
+ /// * None, if the file name begins with `.` and has no other `.`s within;
+ /// * Otherwise, the portion of the file name after the final `.`
+ pub fn extension(&self) -> Option<&OsStr> {
+ self.file_name().map(split_file_at_dot).and_then(|(before, after)| before.and(after))
+ }
+
+ /// Creates an owned `PathBuf` with `path` adjoined to `self`.
+ ///
+ /// See `PathBuf::push` for more details on what it means to adjoin a path.
+ pub fn join<P: ?Sized>(&self, path: &P) -> PathBuf where P: AsPath {
+ let mut buf = self.to_path_buf();
+ buf.push(path);
+ buf
+ }
+
+ /// Creates an owned `PathBuf` like `self` but with the given file name.
+ ///
+ /// See `PathBuf::set_file_name` for more details.
+ pub fn with_file_name<S: ?Sized>(&self, file_name: &S) -> PathBuf where S: AsOsStr {
+ let mut buf = self.to_path_buf();
+ buf.set_file_name(file_name);
+ buf
+ }
+
+ /// Creates an owned `PathBuf` like `self` but with the given extension.
+ ///
+ /// See `PathBuf::set_extension` for more details.
+ pub fn with_extension<S: ?Sized>(&self, extension: &S) -> PathBuf where S: AsOsStr {
+ let mut buf = self.to_path_buf();
+ buf.set_extension(extension);
+ buf
+ }
+
+ /// Produce an iterator over the components of the path.
+ pub fn components(&self) -> Components {
+ let prefix = parse_prefix(self.as_os_str());
+ Components {
+ path: self.as_u8_slice(),
+ prefix: prefix,
+ has_physical_root: has_physical_root(self.as_u8_slice(), prefix),
+ front: State::Prefix,
+ back: if has_suffix(self.as_u8_slice(), prefix) { State::Suffix }
+ else { State::Body },
+ }
+ }
+
+ /// Produce an iterator over the path's components viewed as `OsStr` slices.
+ pub fn iter(&self) -> Iter {
+ Iter { inner: self.components() }
+ }
+
+ /// Returns an object that implements `Display` for safely printing paths
+ /// that may contain non-Unicode data.
+ pub fn display(&self) -> Display {
+ Display { path: self }
+ }
+}
+
+impl AsOsStr for Path {
+ fn as_os_str(&self) -> &OsStr {
+ &self.inner
+ }
+}
+
+impl fmt::Debug for Path {
+ fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+ self.inner.fmt(formatter)
+ }
+}
+
+/// Helper struct for safely printing paths with `format!()` and `{}`
+pub struct Display<'a> {
+ path: &'a Path
+}
+
+impl<'a> fmt::Debug for Display<'a> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ fmt::Debug::fmt(&self.path.to_string_lossy(), f)
+ }
+}
+
+impl<'a> fmt::Display for Display<'a> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ fmt::Display::fmt(&self.path.to_string_lossy(), f)
+ }
+}
+
+impl cmp::PartialEq for Path {
+ fn eq(&self, other: &Path) -> bool {
+ iter::order::eq(self.components(), other.components())
+ }
+}
+
+impl cmp::Eq for Path {}
+
+impl cmp::PartialOrd for Path {
+ fn partial_cmp(&self, other: &Path) -> Option<cmp::Ordering> {
+ self.components().partial_cmp(&other.components())
+ }
+}
+
+impl cmp::Ord for Path {
+ fn cmp(&self, other: &Path) -> cmp::Ordering {
+ self.components().cmp(&other.components())
+ }
+}
+
+/// Freely convertible to a `Path`.
+pub trait AsPath {
+ /// Convert to a `Path`.
+ fn as_path(&self) -> &Path;
+}
+
+impl<T: AsOsStr + ?Sized> AsPath for T {
+ fn as_path(&self) -> &Path { Path::new(self.as_os_str()) }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+ use ffi::OsStr;
+ use core::prelude::*;
+ use string::{ToString, String};
+ use vec::Vec;
+
+ macro_rules! t(
+ ($path:expr, iter: $iter:expr) => (
+ {
+ let path = Path::new($path);
+
+ // Forward iteration
+ let comps = path.iter()
+ .map(|p| p.to_string_lossy().into_owned())
+ .collect::<Vec<String>>();
+ let exp: &[&str] = &$iter;
+ let exps = exp.iter().map(|s| s.to_string()).collect::<Vec<String>>();
+ assert!(comps == exps, "iter: Expected {:?}, found {:?}",
+ exps, comps);
+
+ // Reverse iteration
+ let comps = Path::new($path).iter().rev()
+ .map(|p| p.to_string_lossy().into_owned())
+ .collect::<Vec<String>>();
+ let exps = exps.into_iter().rev().collect::<Vec<String>>();
+ assert!(comps == exps, "iter().rev(): Expected {:?}, found {:?}",
+ exps, comps);
+ }
+ );
+
+ ($path:expr, has_root: $has_root:expr, is_absolute: $is_absolute:expr) => (
+ {
+ let path = Path::new($path);
+
+ let act_root = path.has_root();
+ assert!(act_root == $has_root, "has_root: Expected {:?}, found {:?}",
+ $has_root, act_root);
+
+ let act_abs = path.is_absolute();
+ assert!(act_abs == $is_absolute, "is_absolute: Expected {:?}, found {:?}",
+ $is_absolute, act_abs);
+ }
+ );
+
+ ($path:expr, parent: $parent:expr, file_name: $file:expr) => (
+ {
+ let path = Path::new($path);
+
+ let parent = path.parent().map(|p| p.to_str().unwrap());
+ let exp_parent: Option<&str> = $parent;
+ assert!(parent == exp_parent, "parent: Expected {:?}, found {:?}",
+ exp_parent, parent);
+
+ let file = path.file_name().map(|p| p.to_str().unwrap());
+ let exp_file: Option<&str> = $file;
+ assert!(file == exp_file, "file_name: Expected {:?}, found {:?}",
+ exp_file, file);
+ }
+ );
+
+ ($path:expr, file_stem: $file_stem:expr, extension: $extension:expr) => (
+ {
+ let path = Path::new($path);
+
+ let stem = path.file_stem().map(|p| p.to_str().unwrap());
+ let exp_stem: Option<&str> = $file_stem;
+ assert!(stem == exp_stem, "file_stem: Expected {:?}, found {:?}",
+ exp_stem, stem);
+
+ let ext = path.extension().map(|p| p.to_str().unwrap());
+ let exp_ext: Option<&str> = $extension;
+ assert!(ext == exp_ext, "extension: Expected {:?}, found {:?}",
+ exp_ext, ext);
+ }
+ );
+
+ ($path:expr, iter: $iter:expr,
+ has_root: $has_root:expr, is_absolute: $is_absolute:expr,
+ parent: $parent:expr, file_name: $file:expr,
+ file_stem: $file_stem:expr, extension: $extension:expr) => (
+ {
+ t!($path, iter: $iter);
+ t!($path, has_root: $has_root, is_absolute: $is_absolute);
+ t!($path, parent: $parent, file_name: $file);
+ t!($path, file_stem: $file_stem, extension: $extension);
+ }
+ );
+ );
+
+ #[test]
+ #[cfg(unix)]
+ pub fn test_decompositions_unix() {
+ t!("",
+ iter: [],
+ has_root: false,
+ is_absolute: false,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo",
+ iter: ["foo"],
+ has_root: false,
+ is_absolute: false,
+ parent: None,
+ file_name: Some("foo"),
+ file_stem: Some("foo"),
+ extension: None
+ );
+
+ t!("/",
+ iter: ["/", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("/foo",
+ iter: ["/", "foo"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("/"),
+ file_name: Some("foo"),
+ file_stem: Some("foo"),
+ extension: None
+ );
+
+ t!("foo/",
+ iter: ["foo", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("/foo/",
+ iter: ["/", "foo", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("/foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/bar",
+ iter: ["foo", "bar"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("/foo/bar",
+ iter: ["/", "foo", "bar"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("/foo"),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("///foo///",
+ iter: ["/", "foo", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("///foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("///foo///bar",
+ iter: ["/", "foo", "bar"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("///foo"),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("./.",
+ iter: [".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("./.",
+ iter: [".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("/..",
+ iter: ["/", ".."],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("/"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("../",
+ iter: ["..", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some(".."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/.",
+ iter: ["foo", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/..",
+ iter: ["foo", ".."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/./",
+ iter: ["foo", ".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/./bar",
+ iter: ["foo", ".", "bar"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/."),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("foo/../",
+ iter: ["foo", "..", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/.."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/../bar",
+ iter: ["foo", "..", "bar"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/.."),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("./a",
+ iter: [".", "a"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: Some("a"),
+ file_stem: Some("a"),
+ extension: None
+ );
+
+ t!(".",
+ iter: ["."],
+ has_root: false,
+ is_absolute: false,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("./",
+ iter: [".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("a/b",
+ iter: ["a", "b"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a"),
+ file_name: Some("b"),
+ file_stem: Some("b"),
+ extension: None
+ );
+
+ t!("a//b",
+ iter: ["a", "b"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a"),
+ file_name: Some("b"),
+ file_stem: Some("b"),
+ extension: None
+ );
+
+ t!("a/./b",
+ iter: ["a", ".", "b"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a/."),
+ file_name: Some("b"),
+ file_stem: Some("b"),
+ extension: None
+ );
+
+ t!("a/b/c",
+ iter: ["a", "b", "c"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a/b"),
+ file_name: Some("c"),
+ file_stem: Some("c"),
+ extension: None
+ );
+ }
+
+ #[test]
+ #[cfg(windows)]
+ pub fn test_decompositions_windows() {
+ t!("",
+ iter: [],
+ has_root: false,
+ is_absolute: false,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo",
+ iter: ["foo"],
+ has_root: false,
+ is_absolute: false,
+ parent: None,
+ file_name: Some("foo"),
+ file_stem: Some("foo"),
+ extension: None
+ );
+
+ t!("/",
+ iter: ["\\", "."],
+ has_root: true,
+ is_absolute: false,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("\\",
+ iter: ["\\", "."],
+ has_root: true,
+ is_absolute: false,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("c:",
+ iter: ["c:", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("c:\\",
+ iter: ["c:", "\\", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("c:\\",
+ iter: ["c:", "\\", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("c:/",
+ iter: ["c:", "\\", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("/foo",
+ iter: ["\\", "foo"],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("/"),
+ file_name: Some("foo"),
+ file_stem: Some("foo"),
+ extension: None
+ );
+
+ t!("foo/",
+ iter: ["foo", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("/foo/",
+ iter: ["\\", "foo", "."],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("/foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/bar",
+ iter: ["foo", "bar"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("/foo/bar",
+ iter: ["\\", "foo", "bar"],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("/foo"),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("///foo///",
+ iter: ["\\", "foo", "."],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("///foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("///foo///bar",
+ iter: ["\\", "foo", "bar"],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("///foo"),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("./.",
+ iter: [".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("./.",
+ iter: [".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("/..",
+ iter: ["\\", ".."],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("/"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("../",
+ iter: ["..", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some(".."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/.",
+ iter: ["foo", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/..",
+ iter: ["foo", ".."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/./",
+ iter: ["foo", ".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/./bar",
+ iter: ["foo", ".", "bar"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/."),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("foo/../",
+ iter: ["foo", "..", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/.."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("foo/../bar",
+ iter: ["foo", "..", "bar"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("foo/.."),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+ t!("./a",
+ iter: [".", "a"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: Some("a"),
+ file_stem: Some("a"),
+ extension: None
+ );
+
+ t!(".",
+ iter: ["."],
+ has_root: false,
+ is_absolute: false,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("./",
+ iter: [".", "."],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("."),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("a/b",
+ iter: ["a", "b"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a"),
+ file_name: Some("b"),
+ file_stem: Some("b"),
+ extension: None
+ );
+
+ t!("a//b",
+ iter: ["a", "b"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a"),
+ file_name: Some("b"),
+ file_stem: Some("b"),
+ extension: None
+ );
+
+ t!("a/./b",
+ iter: ["a", ".", "b"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a/."),
+ file_name: Some("b"),
+ file_stem: Some("b"),
+ extension: None
+ );
+
+ t!("a/b/c",
+ iter: ["a", "b", "c"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a/b"),
+ file_name: Some("c"),
+ file_stem: Some("c"),
+ extension: None);
+
+ t!("a\\b\\c",
+ iter: ["a", "b", "c"],
+ has_root: false,
+ is_absolute: false,
+ parent: Some("a\\b"),
+ file_name: Some("c"),
+ file_stem: Some("c"),
+ extension: None
+ );
+
+ t!("\\a",
+ iter: ["\\", "a"],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("\\"),
+ file_name: Some("a"),
+ file_stem: Some("a"),
+ extension: None
+ );
+
+ t!("c:\\foo.txt",
+ iter: ["c:", "\\", "foo.txt"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("c:\\"),
+ file_name: Some("foo.txt"),
+ file_stem: Some("foo"),
+ extension: Some("txt")
+ );
+
+ t!("\\\\server\\share\\foo.txt",
+ iter: ["\\\\server\\share", "\\", "foo.txt"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("\\\\server\\share\\"),
+ file_name: Some("foo.txt"),
+ file_stem: Some("foo"),
+ extension: Some("txt")
+ );
+
+ t!("\\\\server\\share",
+ iter: ["\\\\server\\share", "\\", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("\\\\server",
+ iter: ["\\", "server"],
+ has_root: true,
+ is_absolute: false,
+ parent: Some("\\"),
+ file_name: Some("server"),
+ file_stem: Some("server"),
+ extension: None
+ );
+
+ t!("\\\\?\\bar\\foo.txt",
+ iter: ["\\\\?\\bar", "\\", "foo.txt"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("\\\\?\\bar\\"),
+ file_name: Some("foo.txt"),
+ file_stem: Some("foo"),
+ extension: Some("txt")
+ );
+
+ t!("\\\\?\\bar",
+ iter: ["\\\\?\\bar"],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("\\\\?\\",
+ iter: ["\\\\?\\"],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("\\\\?\\UNC\\server\\share\\foo.txt",
+ iter: ["\\\\?\\UNC\\server\\share", "\\", "foo.txt"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("\\\\?\\UNC\\server\\share\\"),
+ file_name: Some("foo.txt"),
+ file_stem: Some("foo"),
+ extension: Some("txt")
+ );
+
+ t!("\\\\?\\UNC\\server",
+ iter: ["\\\\?\\UNC\\server"],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("\\\\?\\UNC\\",
+ iter: ["\\\\?\\UNC\\"],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("\\\\?\\C:\\foo.txt",
+ iter: ["\\\\?\\C:", "\\", "foo.txt"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("\\\\?\\C:\\"),
+ file_name: Some("foo.txt"),
+ file_stem: Some("foo"),
+ extension: Some("txt")
+ );
+
+
+ t!("\\\\?\\C:\\",
+ iter: ["\\\\?\\C:", "\\", ""],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+
+ t!("\\\\?\\C:",
+ iter: ["\\\\?\\C:"],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+
+ t!("\\\\?\\foo/bar",
+ iter: ["\\\\?\\foo/bar"],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+
+ t!("\\\\?\\C:/foo",
+ iter: ["\\\\?\\C:/foo"],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+
+ t!("\\\\.\\foo\\bar",
+ iter: ["\\\\.\\foo", "\\", "bar"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("\\\\.\\foo\\"),
+ file_name: Some("bar"),
+ file_stem: Some("bar"),
+ extension: None
+ );
+
+
+ t!("\\\\.\\foo",
+ iter: ["\\\\.\\foo", "\\", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+
+ t!("\\\\.\\foo/bar",
+ iter: ["\\\\.\\foo/bar", "\\", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+
+ t!("\\\\.\\foo\\bar/baz",
+ iter: ["\\\\.\\foo", "\\", "bar", "baz"],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("\\\\.\\foo\\bar"),
+ file_name: Some("baz"),
+ file_stem: Some("baz"),
+ extension: None
+ );
+
+
+ t!("\\\\.\\",
+ iter: ["\\\\.\\", "\\", "."],
+ has_root: true,
+ is_absolute: true,
+ parent: None,
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+
+ t!("\\\\?\\a\\b\\",
+ iter: ["\\\\?\\a", "\\", "b", ""],
+ has_root: true,
+ is_absolute: true,
+ parent: Some("\\\\?\\a\\b"),
+ file_name: None,
+ file_stem: None,
+ extension: None
+ );
+ }
+
+ #[test]
+ pub fn test_stem_ext() {
+ t!("foo",
+ file_stem: Some("foo"),
+ extension: None
+ );
+
+ t!("foo.",
+ file_stem: Some("foo"),
+ extension: Some("")
+ );
+
+ t!(".foo",
+ file_stem: Some(".foo"),
+ extension: None
+ );
+
+ t!("foo.txt",
+ file_stem: Some("foo"),
+ extension: Some("txt")
+ );
+
+ t!("foo.bar.txt",
+ file_stem: Some("foo.bar"),
+ extension: Some("txt")
+ );
+
+ t!("foo.bar.",
+ file_stem: Some("foo.bar"),
+ extension: Some("")
+ );
+
+ t!(".",
+ file_stem: None,
+ extension: None
+ );
+
+ t!("..",
+ file_stem: None,
+ extension: None
+ );
+
+ t!("",
+ file_stem: None,
+ extension: None
+ );
+ }
+
+ #[test]
+ pub fn test_push() {
+ macro_rules! tp(
+ ($path:expr, $push:expr, $expected:expr) => ( {
+ let mut actual = PathBuf::new($path);
+ actual.push($push);
+ assert!(actual.to_str() == Some($expected),
+ "pushing {:?} onto {:?}: Expected {:?}, got {:?}",
+ $push, $path, $expected, actual.to_str().unwrap());
+ });
+ );
+
+ if cfg!(unix) {
+ tp!("", "foo", "foo");
+ tp!("foo", "bar", "foo/bar");
+ tp!("foo/", "bar", "foo/bar");
+ tp!("foo//", "bar", "foo//bar");
+ tp!("foo/.", "bar", "foo/./bar");
+ tp!("foo./.", "bar", "foo././bar");
+ tp!("foo", "", "foo/");
+ tp!("foo", ".", "foo/.");
+ tp!("foo", "..", "foo/..");
+ tp!("foo", "/", "/");
+ tp!("/foo/bar", "/", "/");
+ tp!("/foo/bar", "/baz", "/baz");
+ tp!("/foo/bar", "./baz", "/foo/bar/./baz");
+ } else {
+ tp!("", "foo", "foo");
+ tp!("foo", "bar", r"foo\bar");
+ tp!("foo/", "bar", r"foo/bar");
+ tp!(r"foo\", "bar", r"foo\bar");
+ tp!("foo//", "bar", r"foo//bar");
+ tp!(r"foo\\", "bar", r"foo\\bar");
+ tp!("foo/.", "bar", r"foo/.\bar");
+ tp!("foo./.", "bar", r"foo./.\bar");
+ tp!(r"foo\.", "bar", r"foo\.\bar");
+ tp!(r"foo.\.", "bar", r"foo.\.\bar");
+ tp!("foo", "", "foo\\");
+ tp!("foo", ".", r"foo\.");
+ tp!("foo", "..", r"foo\..");
+ tp!("foo", "/", "/");
+ tp!("foo", r"\", r"\");
+ tp!("/foo/bar", "/", "/");
+ tp!(r"\foo\bar", r"\", r"\");
+ tp!("/foo/bar", "/baz", "/baz");
+ tp!("/foo/bar", r"\baz", r"\baz");
+ tp!("/foo/bar", "./baz", r"/foo/bar\./baz");
+ tp!("/foo/bar", r".\baz", r"/foo/bar\.\baz");
+
+ tp!("c:\\", "windows", "c:\\windows");
+ tp!("c:", "windows", "c:windows");
+
+ tp!("a\\b\\c", "d", "a\\b\\c\\d");
+ tp!("\\a\\b\\c", "d", "\\a\\b\\c\\d");
+ tp!("a\\b", "c\\d", "a\\b\\c\\d");
+ tp!("a\\b", "\\c\\d", "\\c\\d");
+ tp!("a\\b", ".", "a\\b\\.");
+ tp!("a\\b", "..\\c", "a\\b\\..\\c");
+ tp!("a\\b", "C:a.txt", "C:a.txt");
+ tp!("a\\b", "C:\\a.txt", "C:\\a.txt");
+ tp!("C:\\a", "C:\\b.txt", "C:\\b.txt");
+ tp!("C:\\a\\b\\c", "C:d", "C:d");
+ tp!("C:a\\b\\c", "C:d", "C:d");
+ tp!("C:", r"a\b\c", r"C:a\b\c");
+ tp!("C:", r"..\a", r"C:..\a");
+ tp!("\\\\server\\share\\foo", "bar", "\\\\server\\share\\foo\\bar");
+ tp!("\\\\server\\share\\foo", "C:baz", "C:baz");
+ tp!("\\\\?\\C:\\a\\b", "C:c\\d", "C:c\\d");
+ tp!("\\\\?\\C:a\\b", "C:c\\d", "C:c\\d");
+ tp!("\\\\?\\C:\\a\\b", "C:\\c\\d", "C:\\c\\d");
+ tp!("\\\\?\\foo\\bar", "baz", "\\\\?\\foo\\bar\\baz");
+ tp!("\\\\?\\UNC\\server\\share\\foo", "bar", "\\\\?\\UNC\\server\\share\\foo\\bar");
+ tp!("\\\\?\\UNC\\server\\share", "C:\\a", "C:\\a");
+ tp!("\\\\?\\UNC\\server\\share", "C:a", "C:a");
+
+ // Note: modified from old path API
+ tp!("\\\\?\\UNC\\server", "foo", "\\\\?\\UNC\\server\\foo");
+
+ tp!("C:\\a", "\\\\?\\UNC\\server\\share", "\\\\?\\UNC\\server\\share");
+ tp!("\\\\.\\foo\\bar", "baz", "\\\\.\\foo\\bar\\baz");
+ tp!("\\\\.\\foo\\bar", "C:a", "C:a");
+ // again, not sure about the following, but I'm assuming \\.\ should be verbatim
+ tp!("\\\\.\\foo", "..\\bar", "\\\\.\\foo\\..\\bar");
+
+ tp!("\\\\?\\C:", "foo", "\\\\?\\C:\\foo"); // this is a weird one
+ }
+ }
+
+ #[test]
+ pub fn test_pop() {
+ macro_rules! tp(
+ ($path:expr, $expected:expr, $output:expr) => ( {
+ let mut actual = PathBuf::new($path);
+ let output = actual.pop();
+ assert!(actual.to_str() == Some($expected) && output == $output,
+ "popping from {:?}: Expected {:?}/{:?}, got {:?}/{:?}",
+ $path, $expected, $output,
+ actual.to_str().unwrap(), output);
+ });
+ );
+
+ tp!("", "", false);
+ tp!("/", "/", false);
+ tp!("foo", "foo", false);
+ tp!(".", ".", false);
+ tp!("/foo", "/", true);
+ tp!("/foo/bar", "/foo", true);
+ tp!("foo/bar", "foo", true);
+ tp!("foo/.", "foo", true);
+ tp!("foo//bar", "foo", true);
+
+ if cfg!(windows) {
+ tp!("a\\b\\c", "a\\b", true);
+ tp!("\\a", "\\", true);
+ tp!("\\", "\\", false);
+
+ tp!("C:\\a\\b", "C:\\a", true);
+ tp!("C:\\a", "C:\\", true);
+ tp!("C:\\", "C:\\", false);
+ tp!("C:a\\b", "C:a", true);
+ tp!("C:a", "C:", true);
+ tp!("C:", "C:", false);
+ tp!("\\\\server\\share\\a\\b", "\\\\server\\share\\a", true);
+ tp!("\\\\server\\share\\a", "\\\\server\\share\\", true);
+ tp!("\\\\server\\share", "\\\\server\\share", false);
+ tp!("\\\\?\\a\\b\\c", "\\\\?\\a\\b", true);
+ tp!("\\\\?\\a\\b", "\\\\?\\a\\", true);
+ tp!("\\\\?\\a", "\\\\?\\a", false);
+ tp!("\\\\?\\C:\\a\\b", "\\\\?\\C:\\a", true);
+ tp!("\\\\?\\C:\\a", "\\\\?\\C:\\", true);
+ tp!("\\\\?\\C:\\", "\\\\?\\C:\\", false);
+ tp!("\\\\?\\UNC\\server\\share\\a\\b", "\\\\?\\UNC\\server\\share\\a", true);
+ tp!("\\\\?\\UNC\\server\\share\\a", "\\\\?\\UNC\\server\\share\\", true);
+ tp!("\\\\?\\UNC\\server\\share", "\\\\?\\UNC\\server\\share", false);
+ tp!("\\\\.\\a\\b\\c", "\\\\.\\a\\b", true);
+ tp!("\\\\.\\a\\b", "\\\\.\\a\\", true);
+ tp!("\\\\.\\a", "\\\\.\\a", false);
+
+ tp!("\\\\?\\a\\b\\", "\\\\?\\a\\b", true);
+ }
+ }
+
+ #[test]
+ pub fn test_set_file_name() {
+ macro_rules! tfn(
+ ($path:expr, $file:expr, $expected:expr) => ( {
+ let mut p = PathBuf::new($path);
+ p.set_file_name($file);
+ assert!(p.to_str() == Some($expected),
+ "setting file name of {:?} to {:?}: Expected {:?}, got {:?}",
+ $path, $file, $expected,
+ p.to_str().unwrap());
+ });
+ );
+
+ tfn!("foo", "foo", "foo");
+ tfn!("foo", "bar", "bar");
+ tfn!("foo", "", "");
+ tfn!("", "foo", "foo");
+ tfn!(".", "foo", "./foo");
+ tfn!("foo/", "bar", "foo/bar");
+ tfn!("foo/.", "bar", "foo/./bar");
+ tfn!("..", "foo", "../foo");
+ tfn!("foo/..", "bar", "foo/../bar");
+ tfn!("/", "foo", "/foo");
+ }
+
+ #[test]
+ pub fn test_set_extension() {
+ macro_rules! tfe(
+ ($path:expr, $ext:expr, $expected:expr, $output:expr) => ( {
+ let mut p = PathBuf::new($path);
+ let output = p.set_extension($ext);
+ assert!(p.to_str() == Some($expected) && output == $output,
+ "setting extension of {:?} to {:?}: Expected {:?}/{:?}, got {:?}/{:?}",
+ $path, $ext, $expected, $output,
+ p.to_str().unwrap(), output);
+ });
+ );
+
+ tfe!("foo", "txt", "foo.txt", true);
+ tfe!("foo.bar", "txt", "foo.txt", true);
+ tfe!("foo.bar.baz", "txt", "foo.bar.txt", true);
+ tfe!(".test", "txt", ".test.txt", true);
+ tfe!("foo.txt", "", "foo", true);
+ tfe!("foo", "", "foo", true);
+ tfe!("", "foo", "", false);
+ tfe!(".", "foo", ".", false);
+ tfe!("foo/", "bar", "foo/", false);
+ tfe!("foo/.", "bar", "foo/.", false);
+ tfe!("..", "foo", "..", false);
+ tfe!("foo/..", "bar", "foo/..", false);
+ tfe!("/", "foo", "/", false);
+ }
+
+ #[test]
+ pub fn test_compare() {
+ macro_rules! tc(
+ ($path1:expr, $path2:expr, eq: $eq:expr,
+ starts_with: $starts_with:expr, ends_with: $ends_with:expr,
+ relative_from: $relative_from:expr) => ({
+ let path1 = Path::new($path1);
+ let path2 = Path::new($path2);
+
+ let eq = path1 == path2;
+ assert!(eq == $eq, "{:?} == {:?}, expected {:?}, got {:?}",
+ $path1, $path2, $eq, eq);
+
+ let starts_with = path1.starts_with(path2);
+ assert!(starts_with == $starts_with,
+ "{:?}.starts_with({:?}), expected {:?}, got {:?}", $path1, $path2,
+ $starts_with, starts_with);
+
+ let ends_with = path1.ends_with(path2);
+ assert!(ends_with == $ends_with,
+ "{:?}.ends_with({:?}), expected {:?}, got {:?}", $path1, $path2,
+ $ends_with, ends_with);
+
+ let relative_from = path1.relative_from(path2).map(|p| p.to_str().unwrap());
+ let exp: Option<&str> = $relative_from;
+ assert!(relative_from == exp,
+ "{:?}.relative_from({:?}), expected {:?}, got {:?}", $path1, $path2,
+ exp, relative_from);
+ });
+ );
+
+ tc!("", "",
+ eq: true,
+ starts_with: true,
+ ends_with: true,
+ relative_from: Some("")
+ );
+
+ tc!("foo", "",
+ eq: false,
+ starts_with: true,
+ ends_with: true,
+ relative_from: Some("foo")
+ );
+
+ tc!("", "foo",
+ eq: false,
+ starts_with: false,
+ ends_with: false,
+ relative_from: None
+ );
+
+ tc!("foo", "foo",
+ eq: true,
+ starts_with: true,
+ ends_with: true,
+ relative_from: Some("")
+ );
+
+ tc!("foo/", "foo",
+ eq: false,
+ starts_with: true,
+ ends_with: false,
+ relative_from: Some(".")
+ );
+
+ tc!("foo/bar", "foo",
+ eq: false,
+ starts_with: true,
+ ends_with: false,
+ relative_from: Some("bar")
+ );
+
+ tc!("foo/bar/baz", "foo/bar",
+ eq: false,
+ starts_with: true,
+ ends_with: false,
+ relative_from: Some("baz")
+ );
+
+ tc!("foo/bar", "foo/bar/baz",
+ eq: false,
+ starts_with: false,
+ ends_with: false,
+ relative_from: None
+ );
+
+ tc!("./foo/bar/", ".",
+ eq: false,
+ starts_with: true,
+ ends_with: true,
+ relative_from: Some("foo/bar/")
+ );
+ }
+}
projects / rust.git / commitdiff