--- /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.
+
+//! Filesystem manipulation operations
+//!
+//! This module contains basic methods to manipulate the contents of the local
+//! filesystem. All methods in this module represent cross-platform filesystem
+//! operations. Extra platform-specific functionality can be found in the
+//! extension traits of `std::os::$platform`.
+
+#![unstable(feature = "fs")]
+
+use core::prelude::*;
+
+use io::{self, Error, ErrorKind, SeekFrom, Seek, Read, Write};
+use path::{AsPath, Path, PathBuf};
+use sys::fs2 as fs_imp;
+use sys_common::{AsInnerMut, FromInner, AsInner};
+use vec::Vec;
+
+pub use self::tempdir::TempDir;
+
+mod tempdir;
+
+/// A reference to an open file on the filesystem.
+///
+/// An instance of a `File` can be read and/or written depending on what options
+/// it was opened with. Files also implement `Seek` to alter the logical cursor
+/// that the file contains internally.
+///
+/// # Example
+///
+/// ```no_run
+/// use std::io::prelude::*;
+/// use std::fs::File;
+///
+/// # fn foo() -> std::io::Result<()> {
+/// let mut f = try!(File::create("foo.txt"));
+/// try!(f.write_all(b"Hello, world!"));
+///
+/// let mut f = try!(File::open("foo.txt"));
+/// let mut s = String::new();
+/// try!(f.read_to_string(&mut s));
+/// assert_eq!(s, "Hello, world!");
+/// # Ok(())
+/// # }
+/// ```
+pub struct File {
+ inner: fs_imp::File,
+ path: PathBuf,
+}
+
+/// Metadata information about a file.
+///
+/// This structure is returned from the `metadata` function or method and
+/// represents known metadata about a file such as its permissions, size,
+/// modification times, etc.
+pub struct Metadata(fs_imp::FileAttr);
+
+/// Iterator over the entries in a directory.
+///
+/// This iterator is returned from the `read_dir` function of this module and
+/// will yield instances of `io::Result<DirEntry>`. Through a `DirEntry`
+/// information like the entry's path and possibly other metadata can be
+/// learned.
+pub struct ReadDir(fs_imp::ReadDir);
+
+/// Entries returned by the `ReadDir` iterator.
+///
+/// An instance of `DirEntry` represents an entry inside of a directory on the
+/// filesystem. Each entry can be inspected via methods to learn about the full
+/// path or possibly other metadata through per-platform extension traits.
+pub struct DirEntry(fs_imp::DirEntry);
+
+/// An iterator that recursively walks over the contents of a directory.
+pub struct WalkDir {
+ cur: Option<ReadDir>,
+ stack: Vec<io::Result<ReadDir>>,
+}
+
+/// Options and flags which can be used to configure how a file is opened.
+///
+/// This builder exposes the ability to configure how a `File` is opened and
+/// what operations are permitted on the open file. The `File::open` and
+/// `File::create` methods are aliases for commonly used options using this
+/// builder.
+#[derive(Clone)]
+pub struct OpenOptions(fs_imp::OpenOptions);
+
+/// Representation of the various permissions on a file.
+///
+/// This module only currently provides one bit of information, `readonly`,
+/// which is exposed on all currently supported platforms. Unix-specific
+/// functionality, such as mode bits, is available through the
+/// `os::unix::PermissionsExt` trait.
+#[derive(Clone, PartialEq, Eq, Debug)]
+pub struct Permissions(fs_imp::FilePermissions);
+
+impl File {
+ /// Attempts to open a file in read-only mode.
+ ///
+ /// See the `OpenOptions::open` method for more details.
+ ///
+ /// # Errors
+ ///
+ /// This function will return an error if `path` does not already exist.
+ /// Other errors may also be returned according to `OpenOptions::open`.
+ pub fn open<P: AsPath + ?Sized>(path: &P) -> io::Result<File> {
+ OpenOptions::new().read(true).open(path)
+ }
+
+ /// Open a file in write-only mode.
+ ///
+ /// This function will create a file if it does not exist,
+ /// and will truncate it if it does.
+ ///
+ /// See the `OpenOptions::open` function for more details.
+ pub fn create<P: AsPath + ?Sized>(path: &P) -> io::Result<File> {
+ OpenOptions::new().write(true).create(true).truncate(true).open(path)
+ }
+
+ /// Returns the original path that was used to open this file.
+ pub fn path(&self) -> Option<&Path> {
+ Some(&self.path)
+ }
+
+ /// Attempt to sync all OS-internal metadata to disk.
+ ///
+ /// This function will attempt to ensure that all in-core data reaches the
+ /// filesystem before returning.
+ pub fn sync_all(&self) -> io::Result<()> {
+ self.inner.fsync()
+ }
+
+ /// This function is similar to `sync_all`, except that it may not
+ /// synchronize file metadata to the filesystem.
+ ///
+ /// This is intended for use cases that must synchronize content, but don't
+ /// need the metadata on disk. The goal of this method is to reduce disk
+ /// operations.
+ ///
+ /// Note that some platforms may simply implement this in terms of
+ /// `sync_all`.
+ pub fn sync_data(&self) -> io::Result<()> {
+ self.inner.datasync()
+ }
+
+ /// Truncates or extends the underlying file, updating the size of
+ /// this file to become `size`.
+ ///
+ /// If the `size` is less than the current file's size, then the file will
+ /// be shrunk. If it is greater than the current file's size, then the file
+ /// will be extended to `size` and have all of the intermediate data filled
+ /// in with 0s.
+ pub fn set_len(&self, size: u64) -> io::Result<()> {
+ self.inner.truncate(size)
+ }
+
+ /// Queries information about the underlying file.
+ pub fn metadata(&self) -> io::Result<Metadata> {
+ self.inner.file_attr().map(Metadata)
+ }
+}
+
+impl AsInner<fs_imp::File> for File {
+ fn as_inner(&self) -> &fs_imp::File { &self.inner }
+}
+impl Read for File {
+ fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+ self.inner.read(buf)
+ }
+}
+impl Write for File {
+ fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+ self.inner.write(buf)
+ }
+ fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
+}
+impl Seek for File {
+ fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
+ self.inner.seek(pos)
+ }
+}
+impl<'a> Read for &'a File {
+ fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+ self.inner.read(buf)
+ }
+}
+impl<'a> Write for &'a File {
+ fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+ self.inner.write(buf)
+ }
+ fn flush(&mut self) -> io::Result<()> { self.inner.flush() }
+}
+impl<'a> Seek for &'a File {
+ fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
+ self.inner.seek(pos)
+ }
+}
+
+impl OpenOptions {
+ /// Creates a blank net set of options ready for configuration.
+ ///
+ /// All options are initially set to `false`.
+ pub fn new() -> OpenOptions {
+ OpenOptions(fs_imp::OpenOptions::new())
+ }
+
+ /// Set the option for read access.
+ ///
+ /// This option, when true, will indicate that the file should be
+ /// `read`-able if opened.
+ pub fn read(&mut self, read: bool) -> &mut OpenOptions {
+ self.0.read(read); self
+ }
+
+ /// Set the option for write access.
+ ///
+ /// This option, when true, will indicate that the file should be
+ /// `write`-able if opened.
+ pub fn write(&mut self, write: bool) -> &mut OpenOptions {
+ self.0.write(write); self
+ }
+
+ /// Set the option for the append mode.
+ ///
+ /// This option, when true, means that writes will append to a file instead
+ /// of overwriting previous contents.
+ pub fn append(&mut self, append: bool) -> &mut OpenOptions {
+ self.0.append(append); self
+ }
+
+ /// Set the option for truncating a previous file.
+ ///
+ /// If a file is successfully opened with this option set it will truncate
+ /// the file to 0 length if it already exists.
+ pub fn truncate(&mut self, truncate: bool) -> &mut OpenOptions {
+ self.0.truncate(truncate); self
+ }
+
+ /// Set the option for creating a new file.
+ ///
+ /// This option indicates whether a new file will be created if the file
+ /// does not yet already exist.
+ pub fn create(&mut self, create: bool) -> &mut OpenOptions {
+ self.0.create(create); self
+ }
+
+ /// Open a file at `path` with the options specified by `self`.
+ ///
+ /// # Errors
+ ///
+ /// This function will return an error under a number of different
+ /// circumstances, to include but not limited to:
+ ///
+ /// * Opening a file that does not exist with read access.
+ /// * Attempting to open a file with access that the user lacks
+ /// permissions for
+ /// * Filesystem-level errors (full disk, etc)
+ pub fn open<P: AsPath + ?Sized>(&self, path: &P) -> io::Result<File> {
+ let path = path.as_path();
+ let inner = try!(fs_imp::File::open(path, &self.0));
+
+ // On *BSD systems, we can open a directory as a file and read from
+ // it: fd=open("/tmp", O_RDONLY); read(fd, buf, N); due to an old
+ // tradition before the introduction of opendir(3). We explicitly
+ // reject it because there are few use cases.
+ if cfg!(not(any(target_os = "linux", target_os = "android"))) &&
+ try!(inner.file_attr()).is_dir() {
+ Err(Error::new(ErrorKind::InvalidInput, "is a directory", None))
+ } else {
+ Ok(File { path: path.to_path_buf(), inner: inner })
+ }
+ }
+}
+impl AsInnerMut<fs_imp::OpenOptions> for OpenOptions {
+ fn as_inner_mut(&mut self) -> &mut fs_imp::OpenOptions { &mut self.0 }
+}
+
+impl Metadata {
+ /// Returns whether this metadata is for a directory.
+ pub fn is_dir(&self) -> bool { self.0.is_dir() }
+
+ /// Returns whether this metadata is for a regular file.
+ pub fn is_file(&self) -> bool { self.0.is_file() }
+
+ /// Returns the size of the file, in bytes, this metadata is for.
+ pub fn len(&self) -> u64 { self.0.size() }
+
+ /// Returns the permissions of the file this metadata is for.
+ pub fn permissions(&self) -> Permissions {
+ Permissions(self.0.perm())
+ }
+
+ /// Returns the most recent access time for a file.
+ ///
+ /// The return value is in milliseconds since the epoch.
+ pub fn accessed(&self) -> u64 { self.0.accessed() }
+
+ /// Returns the most recent modification time for a file.
+ ///
+ /// The return value is in milliseconds since the epoch.
+ pub fn modified(&self) -> u64 { self.0.modified() }
+}
+
+impl Permissions {
+ /// Returns whether these permissions describe a readonly file.
+ pub fn readonly(&self) -> bool { self.0.readonly() }
+
+ /// Modify the readonly flag for this set of permissions.
+ ///
+ /// This operation does **not** modify the filesystem. To modify the
+ /// filesystem use the `fs::set_permissions` function.
+ pub fn set_readonly(&mut self, readonly: bool) {
+ self.0.set_readonly(readonly)
+ }
+}
+
+impl FromInner<fs_imp::FilePermissions> for Permissions {
+ fn from_inner(f: fs_imp::FilePermissions) -> Permissions {
+ Permissions(f)
+ }
+}
+
++impl AsInner<fs_imp::FilePermissions> for Permissions {
++ fn as_inner(&self) -> &fs_imp::FilePermissions { &self.0 }
++}
++
+impl Iterator for ReadDir {
+ type Item = io::Result<DirEntry>;
+
+ fn next(&mut self) -> Option<io::Result<DirEntry>> {
+ self.0.next().map(|entry| entry.map(DirEntry))
+ }
+}
+
+impl DirEntry {
+ /// Returns the full path to the file that this entry represents.
+ ///
+ /// The full path is created by joining the original path to `read_dir` or
+ /// `walk_dir` with the filename of this entry.
+ pub fn path(&self) -> PathBuf { self.0.path() }
+}
+
+/// Remove a file from the underlying filesystem.
+///
+/// # Example
+///
+/// ```rust,no_run
+/// use std::fs;
+///
+/// fs::remove_file("/some/file/path.txt");
+/// ```
+///
+/// Note that, just because an unlink call was successful, it is not
+/// guaranteed that a file is immediately deleted (e.g. depending on
+/// platform, other open file descriptors may prevent immediate removal).
+///
+/// # Errors
+///
+/// This function will return an error if `path` points to a directory, if the
+/// user lacks permissions to remove the file, or if some other filesystem-level
+/// error occurs.
+pub fn remove_file<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ let path = path.as_path();
+ let e = match fs_imp::unlink(path) {
+ Ok(()) => return Ok(()),
+ Err(e) => e,
+ };
+ if !cfg!(windows) { return Err(e) }
+
+ // On unix, a readonly file can be successfully removed. On windows,
+ // however, it cannot. To keep the two platforms in line with
+ // respect to their behavior, catch this case on windows, attempt to
+ // change it to read-write, and then remove the file.
+ if e.kind() != ErrorKind::PermissionDenied { return Err(e) }
+
+ let attr = match metadata(path) { Ok(a) => a, Err(..) => return Err(e) };
+ let mut perms = attr.permissions();
+ if !perms.readonly() { return Err(e) }
+ perms.set_readonly(false);
+
+ if set_permissions(path, perms).is_err() { return Err(e) }
+ if fs_imp::unlink(path).is_ok() { return Ok(()) }
+
+ // Oops, try to put things back the way we found it
+ let _ = set_permissions(path, attr.permissions());
+ Err(e)
+}
+
+/// Given a path, query the file system to get information about a file,
+/// directory, etc.
+///
+/// This function will traverse soft links to query information about the
+/// destination file.
+///
+/// # Example
+///
+/// ```rust,no_run
+/// # fn foo() -> std::io::Result<()> {
+/// use std::fs;
+///
+/// let attr = try!(fs::metadata("/some/file/path.txt"));
+/// // inspect attr ...
+/// # Ok(())
+/// # }
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the user lacks the requisite
+/// permissions to perform a `metadata` call on the given `path` or if there
+/// is no entry in the filesystem at the provided path.
+pub fn metadata<P: AsPath + ?Sized>(path: &P) -> io::Result<Metadata> {
+ fs_imp::stat(path.as_path()).map(Metadata)
+}
+
+/// Rename a file or directory to a new name.
+///
+/// # Example
+///
+/// ```rust,no_run
+/// use std::fs;
+///
+/// fs::rename("foo", "bar");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the provided `from` doesn't exist, if
+/// the process lacks permissions to view the contents, if `from` and `to`
+/// reside on separate filesystems, or if some other intermittent I/O error
+/// occurs.
+pub fn rename<P: AsPath + ?Sized, Q: AsPath + ?Sized>(from: &P, to: &Q)
+ -> io::Result<()> {
+ fs_imp::rename(from.as_path(), to.as_path())
+}
+
+/// Copies the contents of one file to another. This function will also
+/// copy the permission bits of the original file to the destination file.
+///
+/// This function will **overwrite** the contents of `to`.
+///
+/// Note that if `from` and `to` both point to the same file, then the file
+/// will likely get truncated by this operation.
+///
+/// # Example
+///
+/// ```rust
+/// use std::fs;
+///
+/// fs::copy("foo.txt", "bar.txt");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error in the following situations, but is not
+/// limited to just these cases:
+///
+/// * The `from` path is not a file
+/// * The `from` file does not exist
+/// * The current process does not have the permission rights to access
+/// `from` or write `to`
+pub fn copy<P: AsPath + ?Sized, Q: AsPath + ?Sized>(from: &P, to: &Q)
+ -> io::Result<u64> {
+ let from = from.as_path();
+ if !from.is_file() {
+ return Err(Error::new(ErrorKind::MismatchedFileTypeForOperation,
+ "the source path is not an existing file",
+ None))
+ }
+
+ 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)
+}
+
+/// Creates a new hard link on the filesystem.
+///
+/// The `dst` path will be a link pointing to the `src` path. Note that systems
+/// often require these two paths to both be located on the same filesystem.
+pub fn hard_link<P: AsPath + ?Sized, Q: AsPath + ?Sized>(src: &P, dst: &Q)
+ -> io::Result<()> {
+ fs_imp::link(src.as_path(), dst.as_path())
+}
+
+/// Creates a new soft link on the filesystem.
+///
+/// The `dst` path will be a soft link pointing to the `src` path.
+pub fn soft_link<P: AsPath + ?Sized, Q: AsPath + ?Sized>(src: &P, dst: &Q)
+ -> io::Result<()> {
+ fs_imp::symlink(src.as_path(), dst.as_path())
+}
+
+/// Reads a soft link, returning the file that the link points to.
+///
+/// # Errors
+///
+/// This function will return an error on failure. Failure conditions include
+/// reading a file that does not exist or reading a file that is not a soft
+/// link.
+pub fn read_link<P: AsPath + ?Sized>(path: &P) -> io::Result<PathBuf> {
+ fs_imp::readlink(path.as_path())
+}
+
+/// Create a new, empty directory at the provided path
+///
+/// # Example
+///
+/// ```rust
+/// use std::fs;
+///
+/// fs::create_dir("/some/dir");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the user lacks permissions to make a
+/// new directory at the provided `path`, or if the directory already exists.
+pub fn create_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ fs_imp::mkdir(path.as_path())
+}
+
+/// Recursively create a directory and all of its parent components if they
+/// are missing.
+///
+/// # Errors
+///
+/// This function will fail if any directory in the path specified by `path`
+/// does not already exist and it could not be created otherwise. The specific
+/// error conditions for when a directory is being created (after it is
+/// determined to not exist) are outlined by `fs::create_dir`.
+pub fn create_dir_all<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ let path = path.as_path();
+ if path.is_dir() { return Ok(()) }
+ match path.parent() {
+ Some(p) if p != path => try!(create_dir_all(p)),
+ _ => {}
+ }
+ // If the file name of the given `path` is blank then the creation of the
+ // parent directory will have taken care of the whole path for us, so we're
+ // good to go.
+ if path.file_name().is_none() {
+ Ok(())
+ } else {
+ create_dir(path)
+ }
+}
+
+/// Remove an existing, empty directory
+///
+/// # Example
+///
+/// ```rust
+/// use std::fs;
+///
+/// fs::remove_dir("/some/dir");
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the user lacks permissions to remove
+/// the directory at the provided `path`, or if the directory isn't empty.
+pub fn remove_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ fs_imp::rmdir(path.as_path())
+}
+
+/// Removes a directory at this path, after removing all its contents. Use
+/// carefully!
+///
+/// This function does **not** follow soft links and it will simply remove the
+/// soft link itself.
+///
+/// # Errors
+///
+/// See `file::remove_file` and `fs::remove_dir`
+pub fn remove_dir_all<P: AsPath + ?Sized>(path: &P) -> io::Result<()> {
+ let path = path.as_path();
+ for child in try!(read_dir(path)) {
+ let child = try!(child).path();
+ let stat = try!(lstat(&*child));
+ if stat.is_dir() {
+ try!(remove_dir_all(&*child));
+ } else {
+ try!(remove_file(&*child));
+ }
+ }
+ return remove_dir(path);
+
+ #[cfg(unix)]
+ fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::lstat(path) }
+ #[cfg(windows)]
+ fn lstat(path: &Path) -> io::Result<fs_imp::FileAttr> { fs_imp::stat(path) }
+}
+
+/// Returns an iterator over the entries within a directory.
+///
+/// The iterator will yield instances of `io::Result<DirEntry>`. New errors may
+/// be encountered after an iterator is initially constructed.
+///
+/// # Example
+///
+/// ```rust
+/// use std::io;
+/// use std::fs::{self, PathExt, DirEntry};
+/// use std::path::Path;
+///
+/// // one possible implementation of fs::walk_dir only visiting files
+/// fn visit_dirs(dir: &Path, cb: &mut FnMut(DirEntry)) -> io::Result<()> {
+/// if dir.is_dir() {
+/// for entry in try!(fs::read_dir(dir)) {
+/// let entry = try!(entry);
+/// if entry.path().is_dir() {
+/// try!(visit_dirs(&entry.path(), cb));
+/// } else {
+/// cb(entry);
+/// }
+/// }
+/// }
+/// Ok(())
+/// }
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the provided `path` doesn't exist, if
+/// the process lacks permissions to view the contents or if the `path` points
+/// at a non-directory file
+pub fn read_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<ReadDir> {
+ fs_imp::readdir(path.as_path()).map(ReadDir)
+}
+
+/// Returns an iterator that will recursively walk the directory structure
+/// rooted at `path`.
+///
+/// The path given will not be iterated over, and this will perform iteration in
+/// some top-down order. The contents of unreadable subdirectories are ignored.
+///
+/// The iterator will yield instances of `io::Result<DirEntry>`. New errors may
+/// be encountered after an iterator is initially constructed.
+pub fn walk_dir<P: AsPath + ?Sized>(path: &P) -> io::Result<WalkDir> {
+ let start = try!(read_dir(path));
+ Ok(WalkDir { cur: Some(start), stack: Vec::new() })
+}
+
+impl Iterator for WalkDir {
+ type Item = io::Result<DirEntry>;
+
+ fn next(&mut self) -> Option<io::Result<DirEntry>> {
+ loop {
+ if let Some(ref mut cur) = self.cur {
+ match cur.next() {
+ Some(Err(e)) => return Some(Err(e)),
+ Some(Ok(next)) => {
+ let path = next.path();
+ if path.is_dir() {
+ self.stack.push(read_dir(&*path));
+ }
+ return Some(Ok(next))
+ }
+ None => {}
+ }
+ }
+ self.cur = None;
+ match self.stack.pop() {
+ Some(Err(e)) => return Some(Err(e)),
+ Some(Ok(next)) => self.cur = Some(next),
+ None => return None,
+ }
+ }
+ }
+}
+
+/// Utility methods for paths.
+pub trait PathExt {
+ /// Get information on the file, directory, etc at this path.
+ ///
+ /// Consult the `fs::stat` documentation for more info.
+ ///
+ /// This call preserves identical runtime/error semantics with `file::stat`.
+ fn metadata(&self) -> io::Result<Metadata>;
+
+ /// Boolean value indicator whether the underlying file exists on the local
+ /// filesystem. Returns false in exactly the cases where `fs::stat` fails.
+ fn exists(&self) -> bool;
+
+ /// Whether the underlying implementation (be it a file path, or something
+ /// else) points at a "regular file" on the FS. Will return false for paths
+ /// to non-existent locations or directories or other non-regular files
+ /// (named pipes, etc). Follows links when making this determination.
+ fn is_file(&self) -> bool;
+
+ /// Whether the underlying implementation (be it a file path, or something
+ /// else) is pointing at a directory in the underlying FS. Will return
+ /// false for paths to non-existent locations or if the item is not a
+ /// directory (eg files, named pipes, etc). Follows links when making this
+ /// determination.
+ fn is_dir(&self) -> bool;
+}
+
+impl PathExt for Path {
+ fn metadata(&self) -> io::Result<Metadata> { metadata(self) }
+
+ fn exists(&self) -> bool { metadata(self).is_ok() }
+
+ fn is_file(&self) -> bool {
+ metadata(self).map(|s| s.is_file()).unwrap_or(false)
+ }
+ fn is_dir(&self) -> bool {
+ metadata(self).map(|s| s.is_dir()).unwrap_or(false)
+ }
+}
+
+/// Changes the timestamps for a file's last modification and access time.
+///
+/// The file at the path specified will have its last access time set to
+/// `atime` and its modification time set to `mtime`. The times specified should
+/// be in milliseconds.
+pub fn set_file_times<P: AsPath + ?Sized>(path: &P, accessed: u64,
+ modified: u64) -> io::Result<()> {
+ fs_imp::utimes(path.as_path(), accessed, modified)
+}
+
+/// Changes the permissions found on a file or a directory.
+///
+/// # Example
+///
+/// ```
+/// # fn foo() -> std::io::Result<()> {
+/// use std::fs;
+///
+/// let mut perms = try!(fs::metadata("foo.txt")).permissions();
+/// perms.set_readonly(true);
+/// try!(fs::set_permissions("foo.txt", perms));
+/// # Ok(())
+/// # }
+/// ```
+///
+/// # Errors
+///
+/// This function will return an error if the provided `path` doesn't exist, if
+/// the process lacks permissions to change the attributes of the file, or if
+/// some other I/O error is encountered.
+pub fn set_permissions<P: AsPath + ?Sized>(path: &P, perm: Permissions)
+ -> io::Result<()> {
+ fs_imp::set_perm(path.as_path(), perm.0)
+}
+
+#[cfg(test)]
+mod tests {
+ #![allow(deprecated)] //rand
+
+ use prelude::v1::*;
+ use io::prelude::*;
+
+ use fs::{self, File, OpenOptions};
+ use io::{ErrorKind, SeekFrom};
+ use path::PathBuf;
+ use path::Path as Path2;
+ use os;
+ use rand::{self, StdRng, Rng};
+ use str;
+
+ macro_rules! check { ($e:expr) => (
+ match $e {
+ Ok(t) => t,
+ Err(e) => panic!("{} failed with: {}", stringify!($e), e),
+ }
+ ) }
+
+ macro_rules! error { ($e:expr, $s:expr) => (
+ match $e {
+ Ok(_) => panic!("Unexpected success. Should've been: {:?}", $s),
+ Err(ref err) => assert!(err.to_string().contains($s.as_slice()),
+ format!("`{}` did not contain `{}`", err, $s))
+ }
+ ) }
+
+ pub struct TempDir(PathBuf);
+
+ impl TempDir {
+ fn join(&self, path: &str) -> PathBuf {
+ let TempDir(ref p) = *self;
+ p.join(path)
+ }
+
+ fn path<'a>(&'a self) -> &'a Path2 {
+ let TempDir(ref p) = *self;
+ p
+ }
+ }
+
+ impl Drop for TempDir {
+ fn drop(&mut self) {
+ // Gee, seeing how we're testing the fs module I sure hope that we
+ // at least implement this correctly!
+ let TempDir(ref p) = *self;
+ check!(fs::remove_dir_all(p));
+ }
+ }
+
+ pub fn tmpdir() -> TempDir {
+ let s = os::tmpdir();
+ let p = Path2::new(s.as_str().unwrap());
+ let ret = p.join(&format!("rust-{}", rand::random::<u32>()));
+ check!(fs::create_dir(&ret));
+ TempDir(ret)
+ }
+
+ #[test]
+ fn file_test_io_smoke_test() {
+ let message = "it's alright. have a good time";
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test.txt");
+ {
+ let mut write_stream = check!(File::create(filename));
+ check!(write_stream.write(message.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ let mut read_buf = [0; 1028];
+ let read_str = match check!(read_stream.read(&mut read_buf)) {
+ -1|0 => panic!("shouldn't happen"),
+ n => str::from_utf8(&read_buf[..n]).unwrap().to_string()
+ };
+ assert_eq!(read_str.as_slice(), message);
+ }
+ check!(fs::remove_file(filename));
+ }
+
+ #[test]
+ fn invalid_path_raises() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_that_does_not_exist.txt");
+ let result = File::open(filename);
+
+ if cfg!(unix) {
+ error!(result, "o such file or directory");
+ }
+ // error!(result, "couldn't open path as file");
+ // error!(result, format!("path={}; mode=open; access=read", filename.display()));
+ }
+
+ #[test]
+ fn file_test_iounlinking_invalid_path_should_raise_condition() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_another_file_that_does_not_exist.txt");
+
+ let result = fs::remove_file(filename);
+
+ if cfg!(unix) {
+ error!(result, "o such file or directory");
+ }
+ // error!(result, "couldn't unlink path");
+ // error!(result, format!("path={}", filename.display()));
+ }
+
+ #[test]
+ fn file_test_io_non_positional_read() {
+ let message: &str = "ten-four";
+ let mut read_mem = [0; 8];
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_positional.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(message.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ {
+ let read_buf = &mut read_mem[0..4];
+ check!(read_stream.read(read_buf));
+ }
+ {
+ let read_buf = &mut read_mem[4..8];
+ check!(read_stream.read(read_buf));
+ }
+ }
+ check!(fs::remove_file(filename));
+ let read_str = str::from_utf8(&read_mem).unwrap();
+ assert_eq!(read_str, message);
+ }
+
+ #[test]
+ fn file_test_io_seek_and_tell_smoke_test() {
+ let message = "ten-four";
+ let mut read_mem = [0; 4];
+ let set_cursor = 4 as u64;
+ let mut tell_pos_pre_read;
+ let mut tell_pos_post_read;
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_seeking.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(message.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ check!(read_stream.seek(SeekFrom::Start(set_cursor)));
+ tell_pos_pre_read = check!(read_stream.seek(SeekFrom::Current(0)));
+ check!(read_stream.read(&mut read_mem));
+ tell_pos_post_read = check!(read_stream.seek(SeekFrom::Current(0)));
+ }
+ check!(fs::remove_file(filename));
+ let read_str = str::from_utf8(&read_mem).unwrap();
+ assert_eq!(read_str, &message[4..8]);
+ assert_eq!(tell_pos_pre_read, set_cursor);
+ assert_eq!(tell_pos_post_read, message.len() as u64);
+ }
+
+ #[test]
+ fn file_test_io_seek_and_write() {
+ let initial_msg = "food-is-yummy";
+ let overwrite_msg = "-the-bar!!";
+ let final_msg = "foo-the-bar!!";
+ let seek_idx = 3;
+ let mut read_mem = [0; 13];
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_seek_and_write.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(initial_msg.as_bytes()));
+ check!(rw_stream.seek(SeekFrom::Start(seek_idx)));
+ check!(rw_stream.write(overwrite_msg.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+ check!(read_stream.read(&mut read_mem));
+ }
+ check!(fs::remove_file(filename));
+ let read_str = str::from_utf8(&read_mem).unwrap();
+ assert!(read_str == final_msg);
+ }
+
+ #[test]
+ fn file_test_io_seek_shakedown() {
+ // 01234567890123
+ let initial_msg = "qwer-asdf-zxcv";
+ let chunk_one: &str = "qwer";
+ let chunk_two: &str = "asdf";
+ let chunk_three: &str = "zxcv";
+ let mut read_mem = [0; 4];
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_rt_io_file_test_seek_shakedown.txt");
+ {
+ let mut rw_stream = check!(File::create(filename));
+ check!(rw_stream.write(initial_msg.as_bytes()));
+ }
+ {
+ let mut read_stream = check!(File::open(filename));
+
+ check!(read_stream.seek(SeekFrom::End(-4)));
+ check!(read_stream.read(&mut read_mem));
+ assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_three);
+
+ check!(read_stream.seek(SeekFrom::Current(-9)));
+ check!(read_stream.read(&mut read_mem));
+ assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_two);
+
+ check!(read_stream.seek(SeekFrom::Start(0)));
+ check!(read_stream.read(&mut read_mem));
+ assert_eq!(str::from_utf8(&read_mem).unwrap(), chunk_one);
+ }
+ check!(fs::remove_file(filename));
+ }
+
+ #[test]
+ fn file_test_stat_is_correct_on_is_file() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_stat_correct_on_is_file.txt");
+ {
+ let mut opts = OpenOptions::new();
+ let mut fs = check!(opts.read(true).write(true)
+ .create(true).open(filename));
+ let msg = "hw";
+ fs.write(msg.as_bytes()).unwrap();
+
+ let fstat_res = check!(fs.metadata());
+ assert!(fstat_res.is_file());
+ }
+ let stat_res_fn = check!(fs::metadata(filename));
+ assert!(stat_res_fn.is_file());
+ let stat_res_meth = check!(filename.metadata());
+ assert!(stat_res_meth.is_file());
+ check!(fs::remove_file(filename));
+ }
+
+ #[test]
+ fn file_test_stat_is_correct_on_is_dir() {
+ let tmpdir = tmpdir();
+ let filename = &tmpdir.join("file_stat_correct_on_is_dir");
+ check!(fs::create_dir(filename));
+ let stat_res_fn = check!(fs::metadata(filename));
+ assert!(stat_res_fn.is_dir());
+ let stat_res_meth = check!(filename.metadata());
+ assert!(stat_res_meth.is_dir());
+ check!(fs::remove_dir(filename));
+ }
+
+ #[test]
+ fn file_test_fileinfo_false_when_checking_is_file_on_a_directory() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("fileinfo_false_on_dir");
+ check!(fs::create_dir(dir));
+ assert!(dir.is_file() == false);
+ check!(fs::remove_dir(dir));
+ }
+
+ #[test]
+ fn file_test_fileinfo_check_exists_before_and_after_file_creation() {
+ let tmpdir = tmpdir();
+ let file = &tmpdir.join("fileinfo_check_exists_b_and_a.txt");
+ check!(check!(File::create(file)).write(b"foo"));
+ assert!(file.exists());
+ check!(fs::remove_file(file));
+ assert!(!file.exists());
+ }
+
+ #[test]
+ fn file_test_directoryinfo_check_exists_before_and_after_mkdir() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("before_and_after_dir");
+ assert!(!dir.exists());
+ check!(fs::create_dir(dir));
+ assert!(dir.exists());
+ assert!(dir.is_dir());
+ check!(fs::remove_dir(dir));
+ assert!(!dir.exists());
+ }
+
+ #[test]
+ fn file_test_directoryinfo_readdir() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("di_readdir");
+ check!(fs::create_dir(dir));
+ let prefix = "foo";
+ for n in range(0, 3) {
+ let f = dir.join(&format!("{}.txt", n));
+ let mut w = check!(File::create(&f));
+ let msg_str = format!("{}{}", prefix, n.to_string());
+ let msg = msg_str.as_bytes();
+ check!(w.write(msg));
+ }
+ let files = check!(fs::read_dir(dir));
+ let mut mem = [0u8; 4];
+ for f in files {
+ let f = f.unwrap().path();
+ {
+ let n = f.file_stem().unwrap();
+ check!(check!(File::open(&f)).read(&mut mem));
+ let read_str = str::from_utf8(&mem).unwrap();
+ let expected = format!("{}{}", prefix, n.to_str().unwrap());
+ assert_eq!(expected.as_slice(), read_str);
+ }
+ check!(fs::remove_file(&f));
+ }
+ check!(fs::remove_dir(dir));
+ }
+
+ #[test]
+ fn file_test_walk_dir() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("walk_dir");
+ check!(fs::create_dir(dir));
+
+ let dir1 = &dir.join("01/02/03");
+ check!(fs::create_dir_all(dir1));
+ check!(File::create(&dir1.join("04")));
+
+ let dir2 = &dir.join("11/12/13");
+ check!(fs::create_dir_all(dir2));
+ check!(File::create(&dir2.join("14")));
+
+ let files = check!(fs::walk_dir(dir));
+ let mut cur = [0u8; 2];
+ for f in files {
+ let f = f.unwrap().path();
+ let stem = f.file_stem().unwrap().to_str().unwrap();
+ let root = stem.as_bytes()[0] - b'0';
+ let name = stem.as_bytes()[1] - b'0';
+ assert!(cur[root as usize] < name);
+ cur[root as usize] = name;
+ }
+
+ check!(fs::remove_dir_all(dir));
+ }
+
+ #[test]
+ fn mkdir_path_already_exists_error() {
+ let tmpdir = tmpdir();
+ let dir = &tmpdir.join("mkdir_error_twice");
+ check!(fs::create_dir(dir));
+ let e = fs::create_dir(dir).err().unwrap();
+ assert_eq!(e.kind(), ErrorKind::PathAlreadyExists);
+ }
+
+ #[test]
+ fn recursive_mkdir() {
+ let tmpdir = tmpdir();
+ let dir = tmpdir.join("d1/d2");
+ check!(fs::create_dir_all(&dir));
+ assert!(dir.is_dir())
+ }
+
+ #[test]
+ fn recursive_mkdir_failure() {
+ let tmpdir = tmpdir();
+ let dir = tmpdir.join("d1");
+ let file = dir.join("f1");
+
+ check!(fs::create_dir_all(&dir));
+ check!(File::create(&file));
+
+ let result = fs::create_dir_all(&file);
+
+ assert!(result.is_err());
+ // error!(result, "couldn't recursively mkdir");
+ // error!(result, "couldn't create directory");
+ // error!(result, "mode=0700");
+ // error!(result, format!("path={}", file.display()));
+ }
+
+ #[test]
+ fn recursive_mkdir_slash() {
+ check!(fs::create_dir_all(&Path2::new("/")));
+ }
+
+ // FIXME(#12795) depends on lstat to work on windows
+ #[cfg(not(windows))]
+ #[test]
+ fn recursive_rmdir() {
+ let tmpdir = tmpdir();
+ let d1 = tmpdir.join("d1");
+ let dt = d1.join("t");
+ let dtt = dt.join("t");
+ let d2 = tmpdir.join("d2");
+ let canary = d2.join("do_not_delete");
+ check!(fs::create_dir_all(&dtt));
+ check!(fs::create_dir_all(&d2));
+ check!(check!(File::create(&canary)).write(b"foo"));
+ check!(fs::soft_link(&d2, &dt.join("d2")));
+ check!(fs::remove_dir_all(&d1));
+
+ assert!(!d1.is_dir());
+ assert!(canary.exists());
+ }
+
+ #[test]
+ fn unicode_path_is_dir() {
+ assert!(Path2::new(".").is_dir());
+ assert!(!Path2::new("test/stdtest/fs.rs").is_dir());
+
+ let tmpdir = tmpdir();
+
+ let mut dirpath = tmpdir.path().to_path_buf();
+ dirpath.push(&format!("test-가一ー你好"));
+ check!(fs::create_dir(&dirpath));
+ assert!(dirpath.is_dir());
+
+ let mut filepath = dirpath;
+ filepath.push("unicode-file-\u{ac00}\u{4e00}\u{30fc}\u{4f60}\u{597d}.rs");
+ check!(File::create(&filepath)); // ignore return; touch only
+ assert!(!filepath.is_dir());
+ assert!(filepath.exists());
+ }
+
+ #[test]
+ fn unicode_path_exists() {
+ assert!(Path2::new(".").exists());
+ assert!(!Path2::new("test/nonexistent-bogus-path").exists());
+
+ let tmpdir = tmpdir();
+ let unicode = tmpdir.path();
+ let unicode = unicode.join(&format!("test-각丁ー再见"));
+ check!(fs::create_dir(&unicode));
+ assert!(unicode.exists());
+ assert!(!Path2::new("test/unicode-bogus-path-각丁ー再见").exists());
+ }
+
+ #[test]
+ fn copy_file_does_not_exist() {
+ let from = Path2::new("test/nonexistent-bogus-path");
+ let to = Path2::new("test/other-bogus-path");
+
+ match fs::copy(&from, &to) {
+ Ok(..) => panic!(),
+ Err(..) => {
+ assert!(!from.exists());
+ assert!(!to.exists());
+ }
+ }
+ }
+
+ #[test]
+ fn copy_file_ok() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ check!(check!(File::create(&input)).write(b"hello"));
+ check!(fs::copy(&input, &out));
+ let mut v = Vec::new();
+ check!(check!(File::open(&out)).read_to_end(&mut v));
+ assert_eq!(v.as_slice(), b"hello");
+
+ assert_eq!(check!(input.metadata()).permissions(),
+ check!(out.metadata()).permissions());
+ }
+
+ #[test]
+ fn copy_file_dst_dir() {
+ let tmpdir = tmpdir();
+ let out = tmpdir.join("out");
+
+ check!(File::create(&out));
+ match fs::copy(&*out, tmpdir.path()) {
+ Ok(..) => panic!(), Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn copy_file_dst_exists() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in");
+ let output = tmpdir.join("out");
+
+ check!(check!(File::create(&input)).write("foo".as_bytes()));
+ check!(check!(File::create(&output)).write("bar".as_bytes()));
+ check!(fs::copy(&input, &output));
+
+ let mut v = Vec::new();
+ check!(check!(File::open(&output)).read_to_end(&mut v));
+ assert_eq!(v, b"foo".to_vec());
+ }
+
+ #[test]
+ fn copy_file_src_dir() {
+ let tmpdir = tmpdir();
+ let out = tmpdir.join("out");
+
+ match fs::copy(tmpdir.path(), &out) {
+ Ok(..) => panic!(), Err(..) => {}
+ }
+ assert!(!out.exists());
+ }
+
+ #[test]
+ fn copy_file_preserves_perm_bits() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ let attr = check!(check!(File::create(&input)).metadata());
+ let mut p = attr.permissions();
+ p.set_readonly(true);
+ check!(fs::set_permissions(&input, p));
+ check!(fs::copy(&input, &out));
+ assert!(check!(out.metadata()).permissions().readonly());
+ }
+
+ #[cfg(not(windows))] // FIXME(#10264) operation not permitted?
+ #[test]
+ fn symlinks_work() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ check!(check!(File::create(&input)).write("foobar".as_bytes()));
+ check!(fs::soft_link(&input, &out));
+ // if cfg!(not(windows)) {
+ // assert_eq!(check!(lstat(&out)).kind, FileType::Symlink);
+ // assert_eq!(check!(out.lstat()).kind, FileType::Symlink);
+ // }
+ assert_eq!(check!(fs::metadata(&out)).len(),
+ check!(fs::metadata(&input)).len());
+ let mut v = Vec::new();
+ check!(check!(File::open(&out)).read_to_end(&mut v));
+ assert_eq!(v, b"foobar".to_vec());
+ }
+
+ #[cfg(not(windows))] // apparently windows doesn't like symlinks
+ #[test]
+ fn symlink_noexist() {
+ let tmpdir = tmpdir();
+ // symlinks can point to things that don't exist
+ check!(fs::soft_link(&tmpdir.join("foo"), &tmpdir.join("bar")));
+ assert_eq!(check!(fs::read_link(&tmpdir.join("bar"))),
+ tmpdir.join("foo"));
+ }
+
+ #[test]
+ fn readlink_not_symlink() {
+ let tmpdir = tmpdir();
+ match fs::read_link(tmpdir.path()) {
+ Ok(..) => panic!("wanted a failure"),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn links_work() {
+ let tmpdir = tmpdir();
+ let input = tmpdir.join("in.txt");
+ let out = tmpdir.join("out.txt");
+
+ check!(check!(File::create(&input)).write("foobar".as_bytes()));
+ check!(fs::hard_link(&input, &out));
+ assert_eq!(check!(fs::metadata(&out)).len(),
+ check!(fs::metadata(&input)).len());
+ assert_eq!(check!(fs::metadata(&out)).len(),
+ check!(input.metadata()).len());
+ let mut v = Vec::new();
+ check!(check!(File::open(&out)).read_to_end(&mut v));
+ assert_eq!(v, b"foobar".to_vec());
+
+ // can't link to yourself
+ match fs::hard_link(&input, &input) {
+ Ok(..) => panic!("wanted a failure"),
+ Err(..) => {}
+ }
+ // can't link to something that doesn't exist
+ match fs::hard_link(&tmpdir.join("foo"), &tmpdir.join("bar")) {
+ Ok(..) => panic!("wanted a failure"),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn chmod_works() {
+ let tmpdir = tmpdir();
+ let file = tmpdir.join("in.txt");
+
+ check!(File::create(&file));
+ let attr = check!(fs::metadata(&file));
+ assert!(!attr.permissions().readonly());
+ let mut p = attr.permissions();
+ p.set_readonly(true);
+ check!(fs::set_permissions(&file, p.clone()));
+ let attr = check!(fs::metadata(&file));
+ assert!(attr.permissions().readonly());
+
+ match fs::set_permissions(&tmpdir.join("foo"), p) {
+ Ok(..) => panic!("wanted a panic"),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn sync_doesnt_kill_anything() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("in.txt");
+
+ let mut file = check!(File::create(&path));
+ check!(file.sync_all());
+ check!(file.sync_data());
+ check!(file.write(b"foo"));
+ check!(file.sync_all());
+ check!(file.sync_data());
+ }
+
+ #[test]
+ fn truncate_works() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("in.txt");
+
+ let mut file = check!(File::create(&path));
+ check!(file.write(b"foo"));
+ check!(file.sync_all());
+
+ // Do some simple things with truncation
+ assert_eq!(check!(file.metadata()).len(), 3);
+ check!(file.set_len(10));
+ assert_eq!(check!(file.metadata()).len(), 10);
+ check!(file.write(b"bar"));
+ check!(file.sync_all());
+ assert_eq!(check!(file.metadata()).len(), 10);
+
+ let mut v = Vec::new();
+ check!(check!(File::open(&path)).read_to_end(&mut v));
+ assert_eq!(v, b"foobar\0\0\0\0".to_vec());
+
+ // Truncate to a smaller length, don't seek, and then write something.
+ // Ensure that the intermediate zeroes are all filled in (we're seeked
+ // past the end of the file).
+ check!(file.set_len(2));
+ assert_eq!(check!(file.metadata()).len(), 2);
+ check!(file.write(b"wut"));
+ check!(file.sync_all());
+ assert_eq!(check!(file.metadata()).len(), 9);
+ let mut v = Vec::new();
+ check!(check!(File::open(&path)).read_to_end(&mut v));
+ assert_eq!(v, b"fo\0\0\0\0wut".to_vec());
+ }
+
+ #[test]
+ fn open_flavors() {
+ use fs::OpenOptions as OO;
+ fn c<T: Clone>(t: &T) -> T { t.clone() }
+
+ let tmpdir = tmpdir();
+
+ let mut r = OO::new(); r.read(true);
+ let mut w = OO::new(); w.write(true);
+ let mut rw = OO::new(); rw.write(true).read(true);
+
+ match r.open(&tmpdir.join("a")) {
+ Ok(..) => panic!(), Err(..) => {}
+ }
+
+ // Perform each one twice to make sure that it succeeds the second time
+ // (where the file exists)
+ check!(c(&w).create(true).open(&tmpdir.join("b")));
+ assert!(tmpdir.join("b").exists());
+ check!(c(&w).create(true).open(&tmpdir.join("b")));
+ check!(w.open(&tmpdir.join("b")));
+
+ check!(c(&rw).create(true).open(&tmpdir.join("c")));
+ assert!(tmpdir.join("c").exists());
+ check!(c(&rw).create(true).open(&tmpdir.join("c")));
+ check!(rw.open(&tmpdir.join("c")));
+
+ check!(c(&w).append(true).create(true).open(&tmpdir.join("d")));
+ assert!(tmpdir.join("d").exists());
+ check!(c(&w).append(true).create(true).open(&tmpdir.join("d")));
+ check!(c(&w).append(true).open(&tmpdir.join("d")));
+
+ check!(c(&rw).append(true).create(true).open(&tmpdir.join("e")));
+ assert!(tmpdir.join("e").exists());
+ check!(c(&rw).append(true).create(true).open(&tmpdir.join("e")));
+ check!(c(&rw).append(true).open(&tmpdir.join("e")));
+
+ check!(c(&w).truncate(true).create(true).open(&tmpdir.join("f")));
+ assert!(tmpdir.join("f").exists());
+ check!(c(&w).truncate(true).create(true).open(&tmpdir.join("f")));
+ check!(c(&w).truncate(true).open(&tmpdir.join("f")));
+
+ check!(c(&rw).truncate(true).create(true).open(&tmpdir.join("g")));
+ assert!(tmpdir.join("g").exists());
+ check!(c(&rw).truncate(true).create(true).open(&tmpdir.join("g")));
+ check!(c(&rw).truncate(true).open(&tmpdir.join("g")));
+
+ check!(check!(File::create(&tmpdir.join("h"))).write("foo".as_bytes()));
+ check!(r.open(&tmpdir.join("h")));
+ {
+ let mut f = check!(r.open(&tmpdir.join("h")));
+ assert!(f.write("wut".as_bytes()).is_err());
+ }
+ assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
+ {
+ let mut f = check!(c(&w).append(true).open(&tmpdir.join("h")));
+ check!(f.write("bar".as_bytes()));
+ }
+ assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 6);
+ {
+ let mut f = check!(c(&w).truncate(true).open(&tmpdir.join("h")));
+ check!(f.write("bar".as_bytes()));
+ }
+ assert_eq!(check!(fs::metadata(&tmpdir.join("h"))).len(), 3);
+ }
+
+ #[test]
+ fn utime() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("a");
+ check!(File::create(&path));
+ // These numbers have to be bigger than the time in the day to account
+ // for timezones Windows in particular will fail in certain timezones
+ // with small enough values
+ check!(fs::set_file_times(&path, 100000, 200000));
+ assert_eq!(check!(path.metadata()).accessed(), 100000);
+ assert_eq!(check!(path.metadata()).modified(), 200000);
+ }
+
+ #[test]
+ fn utime_noexist() {
+ let tmpdir = tmpdir();
+
+ match fs::set_file_times(&tmpdir.join("a"), 100, 200) {
+ Ok(..) => panic!(),
+ Err(..) => {}
+ }
+ }
+
+ #[test]
+ fn binary_file() {
+ let mut bytes = [0; 1024];
+ StdRng::new().ok().unwrap().fill_bytes(&mut bytes);
+
+ let tmpdir = tmpdir();
+
+ check!(check!(File::create(&tmpdir.join("test"))).write(&bytes));
+ let mut v = Vec::new();
+ check!(check!(File::open(&tmpdir.join("test"))).read_to_end(&mut v));
+ assert!(v == bytes.as_slice());
+ }
+
+ #[test]
+ fn unlink_readonly() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("file");
+ check!(File::create(&path));
+ let mut perm = check!(fs::metadata(&path)).permissions();
+ perm.set_readonly(true);
+ check!(fs::set_permissions(&path, perm));
+ check!(fs::remove_file(&path));
+ }
+
+ #[test]
+ fn mkdir_trailing_slash() {
+ let tmpdir = tmpdir();
+ let path = tmpdir.join("file");
+ check!(fs::create_dir_all(&path.join("a/")));
+ }
+}
projects / rust.git / commitdiff