Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 360 insertions, 0 deletions

diff --git a/vendor/tempdir/src/lib.rs b/vendor/tempdir/src/lib.rs
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+// 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.
+
+#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
+       html_favicon_url = "https://www.rust-lang.org/favicon.ico",
+       html_root_url = "https://docs.rs/tempdir/0.3.7")]
+#![cfg_attr(test, deny(warnings))]
+
+//! Temporary directories of files.
+//!
+//! The [`TempDir`] type creates a directory on the file system that
+//! is deleted once it goes out of scope. At construction, the
+//! `TempDir` creates a new directory with a randomly generated name
+//! and a prefix of your choosing.
+//!
+//! [`TempDir`]: struct.TempDir.html
+//! [`std::env::temp_dir()`]: https://doc.rust-lang.org/std/env/fn.temp_dir.html
+//!
+//! # Examples
+//!
+//! ```
+//! extern crate tempdir;
+//!
+//! use std::fs::File;
+//! use std::io::{self, Write};
+//! use tempdir::TempDir;
+//!
+//! fn main() {
+//!     if let Err(_) = run() {
+//!         ::std::process::exit(1);
+//!     }
+//! }
+//!
+//! fn run() -> Result<(), io::Error> {
+//!     // Create a directory inside of `std::env::temp_dir()`, named with
+//!     // the prefix "example".
+//!     let tmp_dir = TempDir::new("example")?;
+//!     let file_path = tmp_dir.path().join("my-temporary-note.txt");
+//!     let mut tmp_file = File::create(file_path)?;
+//!     writeln!(tmp_file, "Brian was here. Briefly.")?;
+//!
+//!     // By closing the `TempDir` explicitly, we can check that it has
+//!     // been deleted successfully. If we don't close it explicitly,
+//!     // the directory will still be deleted when `tmp_dir` goes out
+//!     // of scope, but we won't know whether deleting the directory
+//!     // succeeded.
+//!     drop(tmp_file);
+//!     tmp_dir.close()?;
+//!     Ok(())
+//! }
+//! ```
+
+extern crate rand;
+extern crate remove_dir_all;
+
+use std::env;
+use std::io::{self, Error, ErrorKind};
+use std::fmt;
+use std::fs;
+use std::path::{self, PathBuf, Path};
+use rand::{thread_rng, Rng};
+use remove_dir_all::remove_dir_all;
+
+/// A directory in the filesystem that is automatically deleted when
+/// it goes out of scope.
+///
+/// The [`TempDir`] type creates a directory on the file system that
+/// is deleted once it goes out of scope. At construction, the
+/// `TempDir` creates a new directory with a randomly generated name,
+/// and with a prefix of your choosing.
+///
+/// The default constructor, [`TempDir::new`], creates directories in
+/// the location returned by [`std::env::temp_dir()`], but `TempDir`
+/// can be configured to manage a temporary directory in any location
+/// by constructing with [`TempDir::new_in`].
+///
+/// After creating a `TempDir`, work with the file system by doing
+/// standard [`std::fs`] file system operations on its [`Path`],
+/// which can be retrieved with [`TempDir::path`]. Once the `TempDir`
+/// value is dropped, the directory at the path will be deleted, along
+/// with any files and directories it contains. It is your responsibility
+/// to ensure that no further file system operations are attempted
+/// inside the temporary directory once it has been deleted.
+///
+/// Various platform-specific conditions may cause `TempDir` to fail
+/// to delete the underlying directory. It's important to ensure that
+/// handles (like [`File`] and [`ReadDir`]) to files inside the
+/// directory are dropped before the `TempDir` goes out of scope. The
+/// `TempDir` destructor will silently ignore any errors in deleting
+/// the directory; to instead handle errors call [`TempDir::close`].
+///
+/// Note that if the program exits before the `TempDir` destructor is
+/// run, such as via [`std::process::exit`], by segfaulting, or by
+/// receiving a signal like `SIGINT`, then the temporary directory
+/// will not be deleted.
+/// 
+/// [`File`]: http://doc.rust-lang.org/std/fs/struct.File.html
+/// [`Path`]: http://doc.rust-lang.org/std/path/struct.Path.html
+/// [`ReadDir`]: http://doc.rust-lang.org/std/fs/struct.ReadDir.html
+/// [`TempDir::close`]: struct.TempDir.html#method.close
+/// [`TempDir::new`]: struct.TempDir.html#method.new
+/// [`TempDir::new_in`]: struct.TempDir.html#method.new_in
+/// [`TempDir::path`]: struct.TempDir.html#method.path
+/// [`TempDir`]: struct.TempDir.html
+/// [`std::env::temp_dir()`]: https://doc.rust-lang.org/std/env/fn.temp_dir.html
+/// [`std::fs`]: http://doc.rust-lang.org/std/fs/index.html
+/// [`std::process::exit`]: http://doc.rust-lang.org/std/process/fn.exit.html
+pub struct TempDir {
+    path: Option<PathBuf>,
+}
+
+// How many times should we (re)try finding an unused random name? It should be
+// enough that an attacker will run out of luck before we run out of patience.
+const NUM_RETRIES: u32 = 1 << 31;
+// How many characters should we include in a random file name? It needs to
+// be enough to dissuade an attacker from trying to preemptively create names
+// of that length, but not so huge that we unnecessarily drain the random number
+// generator of entropy.
+const NUM_RAND_CHARS: usize = 12;
+
+impl TempDir {
+    /// Attempts to make a temporary directory inside of `env::temp_dir()` whose
+    /// name will have the prefix, `prefix`. The directory and
+    /// everything inside it will be automatically deleted once the
+    /// returned `TempDir` is destroyed.
+    ///
+    /// # Errors
+    ///
+    /// If the directory can not be created, `Err` is returned.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs::File;
+    /// use std::io::Write;
+    /// use tempdir::TempDir;
+    ///
+    /// # use std::io;
+    /// # fn run() -> Result<(), io::Error> {
+    /// // Create a directory inside of `std::env::temp_dir()`, named with
+    /// // the prefix, "example".
+    /// let tmp_dir = TempDir::new("example")?;
+    /// let file_path = tmp_dir.path().join("my-temporary-note.txt");
+    /// let mut tmp_file = File::create(file_path)?;
+    /// writeln!(tmp_file, "Brian was here. Briefly.")?;
+    ///
+    /// // `tmp_dir` goes out of scope, the directory as well as
+    /// // `tmp_file` will be deleted here.
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn new(prefix: &str) -> io::Result<TempDir> {
+        TempDir::new_in(&env::temp_dir(), prefix)
+    }
+
+    /// Attempts to make a temporary directory inside of `tmpdir`
+    /// whose name will have the prefix `prefix`. The directory and
+    /// everything inside it will be automatically deleted once the
+    /// returned `TempDir` is destroyed.
+    ///
+    /// # Errors
+    ///
+    /// If the directory can not be created, `Err` is returned.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs::{self, File};
+    /// use std::io::Write;
+    /// use tempdir::TempDir;
+    ///
+    /// # use std::io;
+    /// # fn run() -> Result<(), io::Error> {
+    /// // Create a directory inside of the current directory, named with
+    /// // the prefix, "example".
+    /// let tmp_dir = TempDir::new_in(".", "example")?;
+    /// let file_path = tmp_dir.path().join("my-temporary-note.txt");
+    /// let mut tmp_file = File::create(file_path)?;
+    /// writeln!(tmp_file, "Brian was here. Briefly.")?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn new_in<P: AsRef<Path>>(tmpdir: P, prefix: &str) -> io::Result<TempDir> {
+        let storage;
+        let mut tmpdir = tmpdir.as_ref();
+        if !tmpdir.is_absolute() {
+            let cur_dir = env::current_dir()?;
+            storage = cur_dir.join(tmpdir);
+            tmpdir = &storage;
+            // return TempDir::new_in(&cur_dir.join(tmpdir), prefix);
+        }
+
+        let mut rng = thread_rng();
+        for _ in 0..NUM_RETRIES {
+            let suffix: String = rng.gen_ascii_chars().take(NUM_RAND_CHARS).collect();
+            let leaf = if !prefix.is_empty() {
+                format!("{}.{}", prefix, suffix)
+            } else {
+                // If we're given an empty string for a prefix, then creating a
+                // directory starting with "." would lead to it being
+                // semi-invisible on some systems.
+                suffix
+            };
+            let path = tmpdir.join(&leaf);
+            match fs::create_dir(&path) {
+                Ok(_) => return Ok(TempDir { path: Some(path) }),
+                Err(ref e) if e.kind() == ErrorKind::AlreadyExists => {}
+                Err(e) => return Err(e),
+            }
+        }
+
+        Err(Error::new(ErrorKind::AlreadyExists,
+                       "too many temporary directories already exist"))
+    }
+
+    /// Accesses the [`Path`] to the temporary directory.
+    ///
+    /// [`Path`]: http://doc.rust-lang.org/std/path/struct.Path.html
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use tempdir::TempDir;
+    ///
+    /// # use std::io;
+    /// # fn run() -> Result<(), io::Error> {
+    /// let tmp_path;
+    ///
+    /// {
+    ///    let tmp_dir = TempDir::new("example")?;
+    ///    tmp_path = tmp_dir.path().to_owned();
+    ///
+    ///    // Check that the temp directory actually exists.
+    ///    assert!(tmp_path.exists());
+    ///
+    ///    // End of `tmp_dir` scope, directory will be deleted
+    /// }
+    ///
+    /// // Temp directory should be deleted by now
+    /// assert_eq!(tmp_path.exists(), false);
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn path(&self) -> &path::Path {
+        self.path.as_ref().unwrap()
+    }
+
+    /// Unwraps the [`Path`] contained in the `TempDir` and
+    /// returns it. This destroys the `TempDir` without deleting the
+    /// directory represented by the returned `Path`.
+    ///
+    /// [`Path`]: http://doc.rust-lang.org/std/path/struct.Path.html
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use tempdir::TempDir;
+    ///
+    /// # use std::io;
+    /// # fn run() -> Result<(), io::Error> {
+    /// let tmp_dir = TempDir::new("example")?;
+    ///
+    /// // Convert `tmp_dir` into a `Path`, destroying the `TempDir`
+    /// // without deleting the directory.
+    /// let tmp_path = tmp_dir.into_path();
+    ///
+    /// // Delete the temporary directory ourselves.
+    /// fs::remove_dir_all(tmp_path)?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn into_path(mut self) -> PathBuf {
+        self.path.take().unwrap()
+    }
+
+    /// Closes and removes the temporary directory, returing a `Result`.
+    ///
+    /// Although `TempDir` removes the directory on drop, in the destructor
+    /// any errors are ignored. To detect errors cleaning up the temporary
+    /// directory, call `close` instead.
+    ///
+    /// # Errors
+    ///
+    /// This function may return a variety of [`std::io::Error`]s that result from deleting
+    /// the files and directories contained with the temporary directory,
+    /// as well as from deleting the temporary directory itself. These errors
+    /// may be platform specific.
+    ///
+    /// [`std::io::Error`]: http://doc.rust-lang.org/std/io/struct.Error.html
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs::File;
+    /// use std::io::Write;
+    /// use tempdir::TempDir;
+    ///
+    /// # use std::io;
+    /// # fn run() -> Result<(), io::Error> {
+    /// // Create a directory inside of `std::env::temp_dir()`, named with
+    /// // the prefix, "example".
+    /// let tmp_dir = TempDir::new("example")?;
+    /// let file_path = tmp_dir.path().join("my-temporary-note.txt");
+    /// let mut tmp_file = File::create(file_path)?;
+    /// writeln!(tmp_file, "Brian was here. Briefly.")?;
+    ///
+    /// // By closing the `TempDir` explicitly we can check that it has
+    /// // been deleted successfully. If we don't close it explicitly,
+    /// // the directory will still be deleted when `tmp_dir` goes out
+    /// // of scope, but we won't know whether deleting the directory
+    /// // succeeded.
+    /// drop(tmp_file);
+    /// tmp_dir.close()?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub fn close(mut self) -> io::Result<()> {
+        let result = remove_dir_all(self.path());
+
+        // Prevent the Drop impl from removing the dir a second time.
+        self.path = None;
+
+        result
+    }
+}
+
+impl AsRef<Path> for TempDir {
+    fn as_ref(&self) -> &Path {
+        self.path()
+    }
+}
+
+impl fmt::Debug for TempDir {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("TempDir")
+            .field("path", &self.path())
+            .finish()
+    }
+}
+
+impl Drop for TempDir {
+    fn drop(&mut self) {
+        // Path is `None` if `close()` or `into_path()` has been called.
+        if let Some(ref p) = self.path {
+            let _ =  remove_dir_all(p);
+        }
+    }
+}
+
+// the tests for this module need to change the path using change_dir,
+// and this doesn't play nicely with other tests so these unit tests are located
+// in src/test/run-pass/tempfile.rs