From 77f315a34c650723db9bf97499a93b67f9962d48 Mon Sep 17 00:00:00 2001 From: DongHun Kwak Date: Mon, 27 Feb 2023 14:23:31 +0900 Subject: [PATCH] Import home 0.5.4 --- .cargo_vcs_info.json | 6 ++ Cargo.toml | 36 +++++++++ Cargo.toml.orig | 25 +++++++ LICENSE-APACHE | 201 +++++++++++++++++++++++++++++++++++++++++++++++++++ LICENSE-MIT | 21 ++++++ README.md | 27 +++++++ src/env.rs | 106 +++++++++++++++++++++++++++ src/lib.rs | 149 ++++++++++++++++++++++++++++++++++++++ src/windows.rs | 68 +++++++++++++++++ 9 files changed, 639 insertions(+) create mode 100644 .cargo_vcs_info.json create mode 100644 Cargo.toml create mode 100644 Cargo.toml.orig create mode 100644 LICENSE-APACHE create mode 100644 LICENSE-MIT create mode 100644 README.md create mode 100644 src/env.rs create mode 100644 src/lib.rs create mode 100644 src/windows.rs diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json new file mode 100644 index 0000000..1798217 --- /dev/null +++ b/.cargo_vcs_info.json @@ -0,0 +1,6 @@ +{ + "git": { + "sha1": "f0d2362ad7f2a1577e72c8fc2bd5e77cdf4fbe02" + }, + "path_in_vcs": "" +} \ No newline at end of file diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..765a5f9 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,36 @@ +# 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] +edition = "2018" +name = "home" +version = "0.5.4" +authors = ["Brian Anderson "] +include = [ + "/src", + "/Cargo.toml", + "/CHANGELOG", + "/LICENSE-*", + "/README.md", +] +description = "Shared definitions of home directories" +documentation = "https://docs.rs/home" +readme = "README.md" +license = "MIT OR Apache-2.0" +repository = "https://github.com/brson/home" + +[target."cfg(windows)".dependencies.winapi] +version = "0.3" +features = [ + "shlobj", + "std", + "winerror", +] diff --git a/Cargo.toml.orig b/Cargo.toml.orig new file mode 100644 index 0000000..052b619 --- /dev/null +++ b/Cargo.toml.orig @@ -0,0 +1,25 @@ +[package] +name = "home" +version = "0.5.4" # also update `html_root_url` in `src/lib.rs` +authors = [ "Brian Anderson " ] +documentation = "https://docs.rs/home" +edition = "2018" +include = [ + "/src", + "/Cargo.toml", + "/CHANGELOG", + "/LICENSE-*", + "/README.md", +] +license = "MIT OR Apache-2.0" +readme = "README.md" +repository = "https://github.com/brson/home" +description = "Shared definitions of home directories" + +[target."cfg(windows)".dependencies.winapi] +version = "0.3" +features = [ + "shlobj", + "std", + "winerror", +] diff --git a/LICENSE-APACHE b/LICENSE-APACHE new file mode 100644 index 0000000..c316455 --- /dev/null +++ b/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright 2019 Brian Anderson + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/LICENSE-MIT b/LICENSE-MIT new file mode 100644 index 0000000..f613bcb --- /dev/null +++ b/LICENSE-MIT @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2019 Brian Anderson + +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/README.md b/README.md new file mode 100644 index 0000000..db2ba92 --- /dev/null +++ b/README.md @@ -0,0 +1,27 @@ +[![Documentation](https://docs.rs/home/badge.svg)](https://docs.rs/home) +[![Crates.io](https://img.shields.io/crates/v/home.svg)](https://crates.io/crates/home) + +Canonical definitions of `home_dir`, `cargo_home`, and `rustup_home`. + +This provides the definition of `home_dir` used by Cargo and rustup, +as well functions to find the correct value of `CARGO_HOME` and +`RUSTUP_HOME`. + +The definition of `home_dir` provided by the standard library is +incorrect because it considers the `HOME` environment variable on +Windows. This causes surprising situations where a Rust program will +behave differently depending on whether it is run under a Unix +emulation environment like Cygwin or MinGW. Neither Cargo nor rustup +use the standard libraries definition - they use the definition here. + +This crate further provides two functions, `cargo_home` and +`rustup_home`, which are the canonical way to determine the location +that Cargo and rustup store their data. + +See [rust-lang/rust#43321]. + +[rust-lang/rust#43321]: https://github.com/rust-lang/rust/issues/43321 + +## License + +MIT OR Apache-2.0 diff --git a/src/env.rs b/src/env.rs new file mode 100644 index 0000000..e47273b --- /dev/null +++ b/src/env.rs @@ -0,0 +1,106 @@ +//! Lower-level utilities for mocking the process environment. + +use std::{ + ffi::OsString, + io, + path::{Path, PathBuf}, +}; + +/// Permits parameterizing the home functions via the _from variants - used for +/// in-process unit testing by rustup. +pub trait Env { + /// Return the path to the the users home dir, or None if any error occurs: + /// see home_inner. + fn home_dir(&self) -> Option; + /// Return the current working directory. + fn current_dir(&self) -> io::Result; + /// Get an environment variable, as per std::env::var_os. + fn var_os(&self, key: &str) -> Option; +} + +/// Implements Env for the OS context, both Unix style and Windows. +/// +/// This is trait permits in-process testing by providing a control point to +/// allow in-process divergence on what is normally process wide state. +/// +/// Implementations should be provided by whatever testing framework the caller +/// is using. Code that is not performing in-process threaded testing requiring +/// isolated rustup/cargo directories does not need this trait or the _from +/// functions. +pub struct OsEnv; +impl Env for OsEnv { + fn home_dir(&self) -> Option { + crate::home_dir_inner() + } + fn current_dir(&self) -> io::Result { + std::env::current_dir() + } + fn var_os(&self, key: &str) -> Option { + std::env::var_os(key) + } +} + +pub const OS_ENV: OsEnv = OsEnv {}; + +/// Returns the path of the current user's home directory from [`Env::home_dir`]. +pub fn home_dir_with_env(env: &dyn Env) -> Option { + env.home_dir() +} + +/// Variant of cargo_home where the environment source is parameterized. This is +/// specifically to support in-process testing scenarios as environment +/// variables and user home metadata are normally process global state. See the +/// [`Env`] trait. +pub fn cargo_home_with_env(env: &dyn Env) -> io::Result { + let cwd = env.current_dir()?; + cargo_home_with_cwd_env(env, &cwd) +} + +/// Variant of cargo_home_with_cwd where the environment source is +/// parameterized. This is specifically to support in-process testing scenarios +/// as environment variables and user home metadata are normally process global +/// state. See the OsEnv trait. +pub fn cargo_home_with_cwd_env(env: &dyn Env, cwd: &Path) -> io::Result { + match env.var_os("CARGO_HOME").filter(|h| !h.is_empty()) { + Some(home) => { + let home = PathBuf::from(home); + if home.is_absolute() { + Ok(home) + } else { + Ok(cwd.join(&home)) + } + } + _ => home_dir_with_env(env) + .map(|p| p.join(".cargo")) + .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "could not find cargo home dir")), + } +} + +/// Variant of cargo_home_with_cwd where the environment source is +/// parameterized. This is specifically to support in-process testing scenarios +/// as environment variables and user home metadata are normally process global +/// state. See the OsEnv trait. +pub fn rustup_home_with_env(env: &dyn Env) -> io::Result { + let cwd = env.current_dir()?; + rustup_home_with_cwd_env(env, &cwd) +} + +/// Variant of cargo_home_with_cwd where the environment source is +/// parameterized. This is specifically to support in-process testing scenarios +/// as environment variables and user home metadata are normally process global +/// state. See the OsEnv trait. +pub fn rustup_home_with_cwd_env(env: &dyn Env, cwd: &Path) -> io::Result { + match env.var_os("RUSTUP_HOME").filter(|h| !h.is_empty()) { + Some(home) => { + let home = PathBuf::from(home); + if home.is_absolute() { + Ok(home) + } else { + Ok(cwd.join(&home)) + } + } + _ => home_dir_with_env(env) + .map(|d| d.join(".rustup")) + .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "could not find rustup home dir")), + } +} diff --git a/src/lib.rs b/src/lib.rs new file mode 100644 index 0000000..ad254ca --- /dev/null +++ b/src/lib.rs @@ -0,0 +1,149 @@ +//! Canonical definitions of `home_dir`, `cargo_home`, and `rustup_home`. +//! +//! This provides the definition of `home_dir` used by Cargo and +//! rustup, as well functions to find the correct value of +//! `CARGO_HOME` and `RUSTUP_HOME`. +//! +//! See also the [`dirs`](https://docs.rs/dirs) crate. +//! +//! _Note that as of 2019/08/06 it appears that cargo uses this crate. And +//! rustup has used this crate since 2019/08/21._ +//! +//! The definition of `home_dir` provided by the standard library is +//! incorrect because it considers the `HOME` environment variable on +//! Windows. This causes surprising situations where a Rust program +//! will behave differently depending on whether it is run under a +//! Unix emulation environment like Cygwin or MinGW. Neither Cargo nor +//! rustup use the standard libraries definition - they use the +//! definition here. +//! +//! This crate further provides two functions, `cargo_home` and +//! `rustup_home`, which are the canonical way to determine the +//! location that Cargo and rustup store their data. +//! +//! See also this [discussion]. +//! +//! [discussion]: https://github.com/rust-lang/rust/pull/46799#issuecomment-361156935 + +#![doc(html_root_url = "https://docs.rs/home/0.5.4")] +#![deny(rust_2018_idioms)] + +pub mod env; + +#[cfg(windows)] +mod windows; + +use std::io; +use std::path::{Path, PathBuf}; + +/// Returns the path of the current user's home directory if known. +/// +/// # Unix +/// +/// Returns the value of the `HOME` environment variable if it is set +/// and not equal to the empty string. Otherwise, it tries to determine the +/// home directory by invoking the `getpwuid_r` function on the UID of the +/// current user. +/// +/// # Windows +/// +/// Returns the value of the `USERPROFILE` environment variable if it +/// is set and not equal to the empty string. If both do not exist, +/// [`SHGetFolderPathW`][msdn] is used to return the appropriate path. +/// +/// [msdn]: https://docs.microsoft.com/en-us/windows/win32/api/shlobj_core/nf-shlobj_core-shgetfolderpathw +/// +/// # Examples +/// +/// ``` +/// match home::home_dir() { +/// Some(path) => println!("{}", path.display()), +/// None => println!("Impossible to get your home dir!"), +/// } +/// ``` +pub fn home_dir() -> Option { + env::home_dir_with_env(&env::OS_ENV) +} + +#[cfg(windows)] +use windows::home_dir_inner; + +#[cfg(any(unix, target_os = "redox"))] +fn home_dir_inner() -> Option { + #[allow(deprecated)] + std::env::home_dir() +} + +/// Returns the storage directory used by Cargo, often knowns as +/// `.cargo` or `CARGO_HOME`. +/// +/// It returns one of the following values, in this order of +/// preference: +/// +/// - The value of the `CARGO_HOME` environment variable, if it is +/// an absolute path. +/// - The value of the current working directory joined with the value +/// of the `CARGO_HOME` environment variable, if `CARGO_HOME` is a +/// relative directory. +/// - The `.cargo` directory in the user's home directory, as reported +/// by the `home_dir` function. +/// +/// # Errors +/// +/// This function fails if it fails to retrieve the current directory, +/// or if the home directory cannot be determined. +/// +/// # Examples +/// +/// ``` +/// match home::cargo_home() { +/// Ok(path) => println!("{}", path.display()), +/// Err(err) => eprintln!("Cannot get your cargo home dir: {:?}", err), +/// } +/// ``` +pub fn cargo_home() -> io::Result { + env::cargo_home_with_env(&env::OS_ENV) +} + +/// Returns the storage directory used by Cargo within `cwd`. +/// For more details, see [`cargo_home`](fn.cargo_home.html). +pub fn cargo_home_with_cwd(cwd: &Path) -> io::Result { + env::cargo_home_with_cwd_env(&env::OS_ENV, cwd) +} + +/// Returns the storage directory used by rustup, often knowns as +/// `.rustup` or `RUSTUP_HOME`. +/// +/// It returns one of the following values, in this order of +/// preference: +/// +/// - The value of the `RUSTUP_HOME` environment variable, if it is +/// an absolute path. +/// - The value of the current working directory joined with the value +/// of the `RUSTUP_HOME` environment variable, if `RUSTUP_HOME` is a +/// relative directory. +/// - The `.rustup` directory in the user's home directory, as reported +/// by the `home_dir` function. +/// +/// # Errors +/// +/// This function fails if it fails to retrieve the current directory, +/// or if the home directory cannot be determined. +/// +/// # Examples +/// +/// ``` +/// match home::rustup_home() { +/// Ok(path) => println!("{}", path.display()), +/// Err(err) => eprintln!("Cannot get your rustup home dir: {:?}", err), +/// } +/// ``` +pub fn rustup_home() -> io::Result { + env::rustup_home_with_env(&env::OS_ENV) +} + +/// Returns the storage directory used by rustup within `cwd`. +/// For more details, see [`rustup_home`](fn.rustup_home.html). +pub fn rustup_home_with_cwd(cwd: &Path) -> io::Result { + env::rustup_home_with_cwd_env(&env::OS_ENV, cwd) +} diff --git a/src/windows.rs b/src/windows.rs new file mode 100644 index 0000000..30a535d --- /dev/null +++ b/src/windows.rs @@ -0,0 +1,68 @@ +use std::env; +use std::ffi::OsString; +use std::os::windows::ffi::OsStringExt; +use std::path::PathBuf; +use std::ptr; + +use winapi::shared::minwindef::MAX_PATH; +use winapi::shared::winerror::S_OK; +use winapi::um::shlobj::{SHGetFolderPathW, CSIDL_PROFILE}; + +pub fn home_dir_inner() -> Option { + env::var_os("USERPROFILE") + .filter(|s| !s.is_empty()) + .map(PathBuf::from) + .or_else(home_dir_crt) +} + +#[cfg(not(target_vendor = "uwp"))] +fn home_dir_crt() -> Option { + unsafe { + let mut path: Vec = Vec::with_capacity(MAX_PATH); + match SHGetFolderPathW(ptr::null_mut(), CSIDL_PROFILE, ptr::null_mut(), 0, path.as_mut_ptr()) { + S_OK => { + let len = wcslen(path.as_ptr()); + path.set_len(len); + let s = OsString::from_wide(&path); + Some(PathBuf::from(s)) + } + _ => None, + } + } +} + +#[cfg(target_vendor = "uwp")] +fn home_dir_crt() -> Option { + None +} + +extern "C" { + fn wcslen(buf: *const u16) -> usize; +} + +#[cfg(not(target_vendor = "uwp"))] +#[cfg(test)] +mod tests { + use super::home_dir_inner; + use std::env; + use std::ops::Deref; + use std::path::{Path, PathBuf}; + + #[test] + fn test_with_without() { + let olduserprofile = env::var_os("USERPROFILE").unwrap(); + + env::remove_var("HOME"); + env::remove_var("USERPROFILE"); + + assert_eq!(home_dir_inner(), Some(PathBuf::from(olduserprofile))); + + let home = Path::new(r"C:\Users\foo tar baz"); + + env::set_var("HOME", home.as_os_str()); + assert_ne!(home_dir_inner().as_ref().map(Deref::deref), Some(home)); + + env::set_var("USERPROFILE", home.as_os_str()); + assert_eq!(home_dir_inner().as_ref().map(Deref::deref), Some(home)); + } +} -- 2.7.4