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Let's see how I like this workflow.
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John Doty 2022-12-19 08:27:18 -08:00
parent 34d1830413
commit 9c435dc440
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{"files":{"Cargo.toml":"dd6c411fb23e7e3b48627706969919b0f8d9f7bd7411ba70c71ca9067fc2e53f","LICENSE-APACHE":"d3174ad63e721d4c9dccb8ad4320848992d314369bc46319720b5802c9153fe9","LICENSE-MIT":"6a2e0ade09a7d5f816f11566fee2b151b32235a7fad52b41d49cce96f833c1a9","README.md":"1c818a4ea3bf85aaafe27421528a285db92c1f20ae9651c669379cb603495f37","src/lib.rs":"533a5fb5b6506d3719d0b4abb1c3b3334cb1e2ad01aed7eb799e64b435b04c23","src/xdg_user_dirs.rs":"225ae21a97b839330a8c3bc8e0a0b48e40580cbae25bfc47581dff724bb0ebec"},"package":"1b1d1d91c932ef41c0f2663aa8b0ca0342d444d842c06914aa0a7e352d0bada6"}

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# 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 are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
name = "dirs-sys"
version = "0.3.7"
authors = ["Simon Ochsenreither <simon@ochsenreither.de>"]
description = "System-level helper functions for the dirs and directories crates."
readme = "README.md"
license = "MIT OR Apache-2.0"
repository = "https://github.com/dirs-dev/dirs-sys-rs"
[target."cfg(target_os = \"redox\")".dependencies.redox_users]
version = "0.4"
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"]

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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
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SOFTWARE.

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[![crates.io](https://img.shields.io/crates/v/dirs-sys.svg)](https://crates.io/crates/dirs-sys)
[![API documentation](https://docs.rs/dirs-sys/badge.svg)](https://docs.rs/dirs-sys/)
![actively developed](https://img.shields.io/badge/maintenance-as--is-yellow.svg)
[![TravisCI status](https://img.shields.io/travis/dirs-dev/dirs-sys-rs/master.svg?label=Linux/macOS%20build)](https://travis-ci.org/dirs-dev/dirs-sys-rs)
[![AppVeyor status](https://img.shields.io/appveyor/ci/soc/dirs-sys-rs/master.svg?label=Windows%20build)](https://ci.appveyor.com/project/soc/dirs-sys-rs/branch/master)
![License: MIT/Apache-2.0](https://img.shields.io/badge/license-MIT%2FApache--2.0-orange.svg)
# `dirs-sys`
System-level helper functions for the [`dirs`](https://github.com/dirs-dev/dirs-rs)
and [`directories`](https://github.com/dirs-dev/directories-rs) crates.
_Do not use this library directly, use [`dirs`](https://github.com/dirs-dev/dirs-rs)
or [`directories`](https://github.com/dirs-dev/directories-rs)._
## Compatibility
This crate only exists to facilitate code sharing between [`dirs`](https://github.com/dirs-dev/dirs-rs)
and [`directories`](https://github.com/dirs-dev/directories-rs).
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.
The minimal required version of Rust is 1.13 except for Redox, where the minimum 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:
```
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.

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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")))]
extern crate libc;
#[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;
use super::libc;
// https://github.com/rust-lang/rust/blob/master/src/libstd/sys/unix/os.rs#L498
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")]
extern crate redox_users;
#[cfg(target_os = "redox")]
mod target_redox {
use std::path::PathBuf;
use super::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::{home_dir, is_absolute_path};
use super::xdg_user_dirs;
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")]
extern crate winapi;
#[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 super::winapi;
use super::winapi::shared::winerror;
use super::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 {
combaseapi::CoTaskMemFree(path_ptr as *mut winapi::ctypes::c_void);
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_profile, known_folder_roaming_app_data, known_folder_local_app_data,
known_folder_music, known_folder_desktop, known_folder_documents, known_folder_downloads,
known_folder_pictures, known_folder_public, known_folder_templates, known_folder_videos
};

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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(Vec::new());
parse_user_dirs(home_dir_path, None, &bytes)
}
/// Returns a single XDG user directory obtained from $(XDG_CONFIG_HOME)/user-dirs.dirs.
pub fn single(home_dir_path: &Path, user_dir_file_path: &Path, user_dir_name: &str) -> HashMap<String, PathBuf> {
let bytes = read_all(user_dir_file_path).unwrap_or(Vec::new());
parse_user_dirs(home_dir_path, Some(user_dir_name), &bytes)
}
fn parse_user_dirs(home_dir: &Path, user_dir: Option<&str>, bytes: &[u8]) -> HashMap<String, PathBuf> {
let mut user_dirs = HashMap::new();
for line in bytes.split(|b| *b == b'\n') {
let mut single_dir_found = false;
let (key, value) = match split_once(line, b'=') {
Some(kv) => kv,
None => continue,
};
let key = trim_blank(key);
let key = if key.starts_with(b"XDG_") && key.ends_with(b"_DIR") {
match str::from_utf8(&key[4..key.len()-4]) {
Ok(key) =>
if user_dir.is_some() && option_contains(user_dir, key) {
single_dir_found = true;
key
} else if user_dir.is_none() {
key
} else {
continue
},
Err(_) => continue,
}
} else {
continue
};
// xdg-user-dirs-update uses double quotes and we don't support anything else.
let value = trim_blank(value);
let mut value = if value.starts_with(b"\"") && value.ends_with(b"\"") {
&value[1..value.len()-1]
} else {
continue
};
// Path should be either relative to the home directory or absolute.
let is_relative = if value == b"$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 std::collections::HashMap;
use std::path::{Path, PathBuf};
use super::{trim_blank, shell_unescape, split_once, parse_user_dirs};
#[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));
}
}