Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 781 insertions, 0 deletions

diff --git a/vendor/dirs-sys-next/.cargo-checksum.json b/vendor/dirs-sys-next/.cargo-checksum.json
new file mode 100644
index 000000000..511774523
--- /dev/null
+++ b/vendor/dirs-sys-next/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"6604e30611fe9cc5f307f622fd4d763c3e0284ee98355830a9d8adfe48b45734","Cargo.toml":"c175070c42d97fe11d1d684b4e47f6a3bcdfef2a1fa6afda44ef42279dbe93ab","LICENSE-APACHE":"d3174ad63e721d4c9dccb8ad4320848992d314369bc46319720b5802c9153fe9","LICENSE-MIT":"6a2e0ade09a7d5f816f11566fee2b151b32235a7fad52b41d49cce96f833c1a9","README.md":"ee16237514c143cd4e1496fb268a5bb1807d102511a54b27ec4c94f477ed9f28","src/lib.rs":"344d57bd4f20ac70ab7ef2cbeb4dc33ce443b8f4fdbddb92e846e4bf25027b62","src/xdg_user_dirs.rs":"a160d7f56fd346febcaa47cea27dc460dc89a0d4c12025673a8a322854bce207"},"package":"4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"}
\ No newline at end of file
diff --git a/vendor/dirs-sys-next/CHANGELOG.md b/vendor/dirs-sys-next/CHANGELOG.md
new file mode 100644
index 000000000..be802b3fd
--- /dev/null
+++ b/vendor/dirs-sys-next/CHANGELOG.md
@@ -0,0 +1,44 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+<!--
+# Guiding Principles
+
+* Changelogs are for _humans_, not machines.
+* There should be an entry for every single version.
+* The same types of changes should be grouped.
+* Versions and sections should be linkable.
+* The latest version comes first.
+* The release date of each version is displayed.
+* Mention whether you follow Semantic Versioning.
+
+# Types of changes
+
+* `Added` for new features.
+* `Changed` for changes in existing functionality.
+* `Deprecated` for soon-to-be removed features.
+* `Removed` for now removed features.
+* `Fixed` for any bug fixes.
+* `Security` in case of vulnerabilities.
+ -->
+
+<!-- next-header -->
+## [Unreleased] - ReleaseDate
+
+## [0.1.2] - 2021-01-09
+### Changed
+* Bump `redox_users` by @benesch.
+
+## [0.1.1] - 2020-10-13
+### Changed
+* Use `default-features=false` for `redox_users` crate. This should cut out quite a few
+  unneeded dependencies.
+
+<!-- next-url -->
+[Unreleased]: https://github.com/xdg-rs/dirs/compare/dirs-sys-v0.1.2...HEAD
+[0.1.2]: https://github.com/xdg-rs/dirs/compare/dirs-sys-v0.1.1...dirs-sys-v0.1.2
+[0.1.1]: https://github.com/xdg-rs/dirs/releases/tag/dirs-sys-v0.1.1
diff --git a/vendor/dirs-sys-next/Cargo.toml b/vendor/dirs-sys-next/Cargo.toml
new file mode 100644
index 000000000..e9d8d0ca9
--- /dev/null
+++ b/vendor/dirs-sys-next/Cargo.toml
@@ -0,0 +1,32 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies
+#
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
+
+[package]
+edition = "2018"
+name = "dirs-sys-next"
+version = "0.1.2"
+authors = ["The @xdg-rs members"]
+include = ["/CHANGELOG.md", "/Cargo.toml", "/LICENSE-*", "/README.md", "/src"]
+description = "system-level helper functions for the dirs and directories crates"
+readme = "README.md"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/xdg-rs/dirs/tree/master/dirs-sys"
+[target."cfg(target_os = \"redox\")".dependencies.redox_users]
+version = "0.4.0"
+default-features = false
+[target."cfg(unix)".dependencies.libc]
+version = "0.2"
+[target."cfg(windows)".dependencies.winapi]
+version = "0.3"
+features = ["knownfolders", "objbase", "shlobj", "winbase", "winerror"]
+[badges.maintenance]
+status = "as-is"
diff --git a/vendor/dirs-sys-next/LICENSE-APACHE b/vendor/dirs-sys-next/LICENSE-APACHE
new file mode 100644
index 000000000..91e18a62b
--- /dev/null
+++ b/vendor/dirs-sys-next/LICENSE-APACHE
@@ -0,0 +1,174 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
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+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
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+6. Trademarks. This License does not grant permission to use the trade
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+8. Limitation of Liability. In no event and under no legal theory,
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+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
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+9. Accepting Warranty or Additional Liability. While redistributing
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diff --git a/vendor/dirs-sys-next/LICENSE-MIT b/vendor/dirs-sys-next/LICENSE-MIT
new file mode 100644
index 000000000..1452dc143
--- /dev/null
+++ b/vendor/dirs-sys-next/LICENSE-MIT
@@ -0,0 +1,19 @@
+Copyright (c) 2018-2019 dirs-rs contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/dirs-sys-next/README.md b/vendor/dirs-sys-next/README.md
new file mode 100644
index 000000000..3c706d80f
--- /dev/null
+++ b/vendor/dirs-sys-next/README.md
@@ -0,0 +1,65 @@
+[![crates.io](https://img.shields.io/crates/v/dirs-sys-next.svg)](https://crates.io/crates/dirs-sys-next)
+[![API documentation](https://docs.rs/dirs-sys-next/badge.svg)](https://docs.rs/dirs-sys-next/)
+
+# `dirs-sys-next`
+
+**NOTE**: This crate is a fork of once-abandoned `dirs-sys` crate.
+
+_Do not use this library directly, use [`dirs-next`] or [`directories-next`]._
+
+## Compatibility
+
+This crate only exists to facilitate code sharing between [`dirs-next`]
+and [`directories-next`].
+
+There are no compatibility guarantees whatsoever.
+Functions may change or disappear without warning or any kind of deprecation period.
+
+## Platforms
+
+This library is written in Rust, and supports Linux, Redox, macOS and Windows.
+Other platforms are also supported; they use the Linux conventions.
+
+## Minimum Rust version policy
+
+The minimal required version of Rust is `1.34.0`^.
+
+We may bump the Rust version in major and minor releases (`x`/`y` in `x.y.z`).
+Changing the Rust version will be written in the CHANGELOG.
+
+^ Except for Redox, where the Rust version depends on the
+[`redox_users`](https://crates.io/crates/redox_users) crate.
+
+## Build
+
+It's possible to cross-compile this library if the necessary toolchains are installed with rustup.
+This is helpful to ensure a change has not broken compilation on a different platform.
+
+The following commands will build this library on Linux, macOS and Windows:
+
+```console
+cargo build --target=x86_64-unknown-linux-gnu
+cargo build --target=x86_64-pc-windows-gnu
+cargo build --target=x86_64-apple-darwin
+cargo build --target=x86_64-unknown-redox
+```
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0
+   ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license
+   ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
+
+[`dirs-next`]: https://github.com/xdg-rs/dirs
+[`directories-next`]: https://github.com/xdg-rs/dirs/tree/master/directories
diff --git a/vendor/dirs-sys-next/src/lib.rs b/vendor/dirs-sys-next/src/lib.rs
new file mode 100644
index 000000000..f76862e85
--- /dev/null
+++ b/vendor/dirs-sys-next/src/lib.rs
@@ -0,0 +1,198 @@
+#![warn(rust_2018_idioms)]
+
+use std::ffi::OsString;
+use std::path::PathBuf;
+
+// we don't need to explicitly handle empty strings in the code above,
+// because an empty string is not considered to be a absolute path here.
+pub fn is_absolute_path(path: OsString) -> Option<PathBuf> {
+    let path = PathBuf::from(path);
+    if path.is_absolute() {
+        Some(path)
+    } else {
+        None
+    }
+}
+
+#[cfg(all(unix, not(target_os = "redox")))]
+mod target_unix_not_redox {
+
+    use std::env;
+    use std::ffi::{CStr, OsString};
+    use std::mem;
+    use std::os::unix::ffi::OsStringExt;
+    use std::path::PathBuf;
+    use std::ptr;
+
+    // https://github.com/rust-lang/rust/blob/ef3e3863939217678e5f7e755c4234d224107c64/library/std/src/sys/unix/os.rs#L587
+    pub fn home_dir() -> Option<PathBuf> {
+        return env::var_os("HOME")
+            .and_then(|h| if h.is_empty() { None } else { Some(h) })
+            .or_else(|| unsafe { fallback() })
+            .map(PathBuf::from);
+
+        #[cfg(any(target_os = "android", target_os = "ios", target_os = "emscripten"))]
+        unsafe fn fallback() -> Option<OsString> {
+            None
+        }
+        #[cfg(not(any(target_os = "android", target_os = "ios", target_os = "emscripten")))]
+        unsafe fn fallback() -> Option<OsString> {
+            let amt = match libc::sysconf(libc::_SC_GETPW_R_SIZE_MAX) {
+                n if n < 0 => 512 as usize,
+                n => n as usize,
+            };
+            let mut buf = Vec::with_capacity(amt);
+            let mut passwd: libc::passwd = mem::zeroed();
+            let mut result = ptr::null_mut();
+            match libc::getpwuid_r(libc::getuid(), &mut passwd, buf.as_mut_ptr(), buf.capacity(), &mut result) {
+                0 if !result.is_null() => {
+                    let ptr = passwd.pw_dir as *const _;
+                    let bytes = CStr::from_ptr(ptr).to_bytes();
+                    if bytes.is_empty() {
+                        None
+                    } else {
+                        Some(OsStringExt::from_vec(bytes.to_vec()))
+                    }
+                }
+                _ => None,
+            }
+        }
+    }
+}
+
+#[cfg(all(unix, not(target_os = "redox")))]
+pub use self::target_unix_not_redox::home_dir;
+
+#[cfg(target_os = "redox")]
+mod target_redox {
+
+    use std::path::PathBuf;
+
+    use redox_users::{All, AllUsers, Config};
+
+    pub fn home_dir() -> Option<PathBuf> {
+        let current_uid = redox_users::get_uid().ok()?;
+        let users = AllUsers::basic(Config::default()).ok()?;
+        let user = users.get_by_id(current_uid)?;
+
+        Some(PathBuf::from(user.home.clone()))
+    }
+}
+
+#[cfg(target_os = "redox")]
+pub use self::target_redox::home_dir;
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+mod xdg_user_dirs;
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+mod target_unix_not_mac {
+
+    use std::collections::HashMap;
+    use std::env;
+    use std::path::{Path, PathBuf};
+
+    use super::xdg_user_dirs;
+    use super::{home_dir, is_absolute_path};
+
+    fn user_dir_file(home_dir: &Path) -> PathBuf {
+        env::var_os("XDG_CONFIG_HOME")
+            .and_then(is_absolute_path)
+            .unwrap_or_else(|| home_dir.join(".config"))
+            .join("user-dirs.dirs")
+    }
+
+    // this could be optimized further to not create a map and instead retrieve the requested path only
+    pub fn user_dir(user_dir_name: &str) -> Option<PathBuf> {
+        if let Some(home_dir) = home_dir() {
+            xdg_user_dirs::single(&home_dir, &user_dir_file(&home_dir), user_dir_name).remove(user_dir_name)
+        } else {
+            None
+        }
+    }
+
+    pub fn user_dirs(home_dir_path: &Path) -> HashMap<String, PathBuf> {
+        xdg_user_dirs::all(home_dir_path, &user_dir_file(home_dir_path))
+    }
+}
+
+#[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))]
+pub use self::target_unix_not_mac::{user_dir, user_dirs};
+
+#[cfg(target_os = "windows")]
+mod target_windows {
+
+    use std::ffi::OsString;
+    use std::os::windows::ffi::OsStringExt;
+    use std::path::PathBuf;
+    use std::ptr;
+    use std::slice;
+
+    use winapi::shared::winerror;
+    use winapi::um::{combaseapi, knownfolders, shlobj, shtypes, winbase, winnt};
+
+    pub fn known_folder(folder_id: shtypes::REFKNOWNFOLDERID) -> Option<PathBuf> {
+        unsafe {
+            let mut path_ptr: winnt::PWSTR = ptr::null_mut();
+            let result = shlobj::SHGetKnownFolderPath(folder_id, 0, ptr::null_mut(), &mut path_ptr);
+            if result == winerror::S_OK {
+                let len = winbase::lstrlenW(path_ptr) as usize;
+                let path = slice::from_raw_parts(path_ptr, len);
+                let ostr: OsString = OsStringExt::from_wide(path);
+                combaseapi::CoTaskMemFree(path_ptr as *mut winapi::ctypes::c_void);
+                Some(PathBuf::from(ostr))
+            } else {
+                None
+            }
+        }
+    }
+
+    pub fn known_folder_profile() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Profile)
+    }
+
+    pub fn known_folder_roaming_app_data() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_RoamingAppData)
+    }
+
+    pub fn known_folder_local_app_data() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_LocalAppData)
+    }
+
+    pub fn known_folder_music() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Music)
+    }
+
+    pub fn known_folder_desktop() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Desktop)
+    }
+
+    pub fn known_folder_documents() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Documents)
+    }
+
+    pub fn known_folder_downloads() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Downloads)
+    }
+
+    pub fn known_folder_pictures() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Pictures)
+    }
+
+    pub fn known_folder_public() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Public)
+    }
+    pub fn known_folder_templates() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Templates)
+    }
+    pub fn known_folder_videos() -> Option<PathBuf> {
+        known_folder(&knownfolders::FOLDERID_Videos)
+    }
+}
+
+#[cfg(target_os = "windows")]
+pub use self::target_windows::{
+    known_folder, known_folder_desktop, known_folder_documents, known_folder_downloads, known_folder_local_app_data,
+    known_folder_music, known_folder_pictures, known_folder_profile, known_folder_public,
+    known_folder_roaming_app_data, known_folder_templates, known_folder_videos,
+};
diff --git a/vendor/dirs-sys-next/src/xdg_user_dirs.rs b/vendor/dirs-sys-next/src/xdg_user_dirs.rs
new file mode 100644
index 000000000..4fabc81d9
--- /dev/null
+++ b/vendor/dirs-sys-next/src/xdg_user_dirs.rs
@@ -0,0 +1,248 @@
+use std::collections::HashMap;
+use std::ffi::OsString;
+use std::fs;
+use std::io::{self, Read};
+use std::os::unix::ffi::OsStringExt;
+use std::path::{Path, PathBuf};
+use std::str;
+
+/// Returns all XDG user directories obtained from $(XDG_CONFIG_HOME)/user-dirs.dirs.
+pub fn all(home_dir_path: &Path, user_dir_file_path: &Path) -> HashMap<String, PathBuf> {
+    let bytes = read_all(user_dir_file_path).unwrap_or_default();
+    parse_user_dirs(home_dir_path, None, &bytes)
+}
+
+/// Returns a single XDG user directory obtained from $(XDG_CONFIG_HOME)/user-dirs.dirs.
+pub fn single(home_dir_path: &Path, user_dir_file_path: &Path, user_dir_name: &str) -> HashMap<String, PathBuf> {
+    let bytes = read_all(user_dir_file_path).unwrap_or_default();
+    parse_user_dirs(home_dir_path, Some(user_dir_name), &bytes)
+}
+
+fn parse_user_dirs(home_dir: &Path, user_dir: Option<&str>, bytes: &[u8]) -> HashMap<String, PathBuf> {
+    let mut user_dirs = HashMap::new();
+
+    for line in bytes.split(|b| *b == b'\n') {
+        let mut single_dir_found = false;
+        let (key, value) = match split_once(line, b'=') {
+            Some(kv) => kv,
+            None => continue,
+        };
+
+        let key = trim_blank(key);
+        let key = if key.starts_with(b"XDG_") && key.ends_with(b"_DIR") {
+            match str::from_utf8(&key[4..key.len() - 4]) {
+                Ok(key) => {
+                    if user_dir.is_some() && option_contains(user_dir, key) {
+                        single_dir_found = true;
+                        key
+                    } else if user_dir.is_none() {
+                        key
+                    } else {
+                        continue;
+                    }
+                }
+                Err(_) => continue,
+            }
+        } else {
+            continue;
+        };
+
+        // xdg-user-dirs-update uses double quotes and we don't support anything else.
+        let value = trim_blank(value);
+        let mut value =
+            if value.starts_with(b"\"") && value.ends_with(b"\"") { &value[1..value.len() - 1] } else { continue };
+
+        // Path should be either relative to the home directory or absolute.
+        let is_relative = if value == b"$HOME/" {
+            // "Note: To disable a directory, point it to the homedir."
+            // Source: https://www.freedesktop.org/wiki/Software/xdg-user-dirs/
+            // Additionally directory is reassigned to homedir when removed.
+            continue;
+        } else if value.starts_with(b"$HOME/") {
+            value = &value[b"$HOME/".len()..];
+            true
+        } else if value.starts_with(b"/") {
+            false
+        } else {
+            continue;
+        };
+
+        let value = OsString::from_vec(shell_unescape(value));
+
+        let path = if is_relative {
+            let mut path = PathBuf::from(&home_dir);
+            path.push(value);
+            path
+        } else {
+            PathBuf::from(value)
+        };
+
+        user_dirs.insert(key.to_owned(), path);
+        if single_dir_found {
+            break;
+        }
+    }
+
+    user_dirs
+}
+
+/// Reads the entire contents of a file into a byte vector.
+fn read_all(path: &Path) -> io::Result<Vec<u8>> {
+    let mut file = fs::File::open(path)?;
+    let mut bytes = Vec::with_capacity(1024);
+    file.read_to_end(&mut bytes)?;
+    Ok(bytes)
+}
+
+/// Returns bytes before and after first occurrence of separator.
+fn split_once(bytes: &[u8], separator: u8) -> Option<(&[u8], &[u8])> {
+    bytes.iter().position(|b| *b == separator).map(|i| (&bytes[..i], &bytes[i + 1..]))
+}
+
+/// Returns a slice with leading and trailing <blank> characters removed.
+fn trim_blank(bytes: &[u8]) -> &[u8] {
+    // Trim leading <blank> characters.
+    let i = bytes.iter().cloned().take_while(|b| *b == b' ' || *b == b'\t').count();
+    let bytes = &bytes[i..];
+
+    // Trim trailing <blank> characters.
+    let i = bytes.iter().cloned().rev().take_while(|b| *b == b' ' || *b == b'\t').count();
+    &bytes[..bytes.len() - i]
+}
+
+/// Unescape bytes escaped with POSIX shell double-quotes rules (as used by xdg-user-dirs-update).
+fn shell_unescape(escaped: &[u8]) -> Vec<u8> {
+    // We assume that byte string was created by xdg-user-dirs-update which
+    // escapes all characters that might potentially have special meaning,
+    // so there is no need to check if backslash is actually followed by
+    // $ ` " \ or a <newline>.
+
+    let mut unescaped: Vec<u8> = Vec::with_capacity(escaped.len());
+    let mut i = escaped.iter().cloned();
+
+    while let Some(b) = i.next() {
+        if b == b'\\' {
+            if let Some(b) = i.next() {
+                unescaped.push(b);
+            }
+        } else {
+            unescaped.push(b);
+        }
+    }
+
+    unescaped
+}
+
+fn option_contains<T: PartialEq>(option: Option<T>, value: T) -> bool {
+    match option {
+        Some(val) => val == value,
+        None => false,
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{parse_user_dirs, shell_unescape, split_once, trim_blank};
+    use std::collections::HashMap;
+    use std::path::{Path, PathBuf};
+
+    #[test]
+    fn test_trim_blank() {
+        assert_eq!(b"x", trim_blank(b"x"));
+        assert_eq!(b"", trim_blank(b" \t  "));
+        assert_eq!(b"hello there", trim_blank(b" \t hello there \t "));
+        assert_eq!(b"\r\n", trim_blank(b"\r\n"));
+    }
+
+    #[test]
+    fn test_split_once() {
+        assert_eq!(None, split_once(b"a b c", b'='));
+        assert_eq!(Some((b"before".as_ref(), b"after".as_ref())), split_once(b"before=after", b'='));
+    }
+
+    #[test]
+    fn test_shell_unescape() {
+        assert_eq!(b"abc", shell_unescape(b"abc").as_slice());
+        assert_eq!(b"x\\y$z`", shell_unescape(b"x\\\\y\\$z\\`").as_slice());
+    }
+
+    #[test]
+    fn test_parse_empty() {
+        assert_eq!(HashMap::new(), parse_user_dirs(Path::new("/root/"), None, b""));
+        assert_eq!(HashMap::new(), parse_user_dirs(Path::new("/root/"), Some("MUSIC"), b""));
+    }
+
+    #[test]
+    fn test_absolute_path_is_accepted() {
+        let mut dirs = HashMap::new();
+        dirs.insert("MUSIC".to_owned(), PathBuf::from("/media/music"));
+        let bytes = br#"XDG_MUSIC_DIR="/media/music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_relative_path_is_rejected() {
+        let dirs = HashMap::new();
+        let bytes = br#"XDG_MUSIC_DIR="music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_relative_to_home() {
+        let mut dirs = HashMap::new();
+        dirs.insert("MUSIC".to_owned(), PathBuf::from("/home/john/Music"));
+        let bytes = br#"XDG_MUSIC_DIR="$HOME/Music""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_disabled_directory() {
+        let dirs = HashMap::new();
+        let bytes = br#"XDG_MUSIC_DIR="$HOME/""#;
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), None, bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/john"), Some("MUSIC"), bytes));
+    }
+
+    #[test]
+    fn test_parse_user_dirs() {
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("DESKTOP".to_string(), PathBuf::from("/home/bob/Desktop"));
+        dirs.insert("DOWNLOAD".to_string(), PathBuf::from("/home/bob/Downloads"));
+        dirs.insert("PICTURES".to_string(), PathBuf::from("/home/eve/pics"));
+
+        let bytes = br#"
+# This file is written by xdg-user-dirs-update
+# If you want to change or add directories, just edit the line you're
+# interested in. All local changes will be retained on the next run.
+# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
+# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
+# absolute path. No other format is supported.
+XDG_DESKTOP_DIR="$HOME/Desktop"
+XDG_DOWNLOAD_DIR="$HOME/Downloads"
+XDG_TEMPLATES_DIR=""
+XDG_PUBLICSHARE_DIR="$HOME"
+XDG_DOCUMENTS_DIR="$HOME/"
+XDG_PICTURES_DIR="/home/eve/pics"
+XDG_VIDEOS_DIR="$HOxyzME/Videos"
+"#;
+
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), None, bytes));
+
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("DESKTOP".to_string(), PathBuf::from("/home/bob/Desktop"));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("DESKTOP"), bytes));
+
+        let mut dirs: HashMap<String, PathBuf> = HashMap::new();
+        dirs.insert("PICTURES".to_string(), PathBuf::from("/home/eve/pics"));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("PICTURES"), bytes));
+
+        let dirs: HashMap<String, PathBuf> = HashMap::new();
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("TEMPLATES"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("PUBLICSHARE"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("DOCUMENTS"), bytes));
+        assert_eq!(dirs, parse_user_dirs(Path::new("/home/bob"), Some("VIDEOS"), bytes));
+    }
+}