Replace std::env::home_dir with dirs::home_dir

`std::env::home_dir` is deprecated but will probably take a while until
it is deprecated on stable. For more info see rust-lang/rust#51656

Author: niklasad1

Cargo.lock

@@ -17,13 +17,12 @@
 //! Parity upgrade logic
 
 use semver::{Version, SemVerError};
-use std::collections::*;
+use std::collections::HashMap;
 use std::fs::{self, File, create_dir_all};
-use std::env;
 use std::io;
 use std::io::{Read, Write};
 use std::path::{PathBuf, Path};
-use dir::{DatabaseDirectories, default_data_path};
+use dir::{DatabaseDirectories, default_data_path, home_dir};
 use dir::helpers::replace_home;
 use journaldb::Algorithm;
 
@@ -106,7 +105,7 @@ fn with_locked_version<F>(db_path: Option<&str>, script: F) -> Result<usize, Err
 	where F: Fn(&Version) -> Result<usize, Error>
 {
 	let mut path = db_path.map_or({
-		let mut path = env::home_dir().expect("Applications should have a home dir");
+		let mut path = home_dir().expect("Applications should have a home dir");
 		path.push(".parity");
 		path
 	}, PathBuf::from);

parity/upgrade.rs

@@ -1,9 +1,11 @@
 [package]
 name = "dir"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Parity Technologies <[email protected]>"]
+license = "GPL3"
 
 [dependencies]
 ethereum-types = "0.3"
 journaldb = { path = "../journaldb" }
 app_dirs = { git = "https://github.com/paritytech/app-dirs-rs" }
+dirs = "1.0.2"

util/dir/Cargo.toml

@@ -15,12 +15,11 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Directory helper functions
-use std::env;
 
 /// Replaces `$HOME` str with home directory path.
 pub fn replace_home(base: &str, arg: &str) -> String {
 	// the $HOME directory on mac os should be `~/Library` or `~/Library/Application Support`
-	let r = arg.replace("$HOME", env::home_dir().unwrap().to_str().unwrap());
+	let r = arg.replace("$HOME", ::dirs::home_dir().unwrap().to_str().unwrap());
 	let r = r.replace("$BASE", base);
 	r.replace("/", &::std::path::MAIN_SEPARATOR.to_string())
 }

util/dir/src/helpers.rs

@@ -18,11 +18,12 @@
 
 //! Dir utilities for platform-specific operations
 extern crate app_dirs;
+extern crate dirs;
 extern crate ethereum_types;
 extern crate journaldb;
 
 pub mod helpers;
-use std::{env, fs};
+use std::fs;
 use std::path::{PathBuf, Path};
 use ethereum_types::{H64, H256};
 use journaldb::Algorithm;
@@ -31,19 +32,21 @@ use app_dirs::{AppInfo, get_app_root, AppDataType};
 // re-export platform-specific functions
 use platform::*;
 
+pub use dirs::home_dir;
+
 /// Platform-specific chains path - Windows only
-#[cfg(target_os = "windows")] pub const CHAINS_PATH: &'static str = "$LOCAL/chains";
+#[cfg(target_os = "windows")] pub const CHAINS_PATH: &str = "$LOCAL/chains";
 /// Platform-specific chains path
-#[cfg(not(target_os = "windows"))] pub const CHAINS_PATH: &'static str = "$BASE/chains";
+#[cfg(not(target_os = "windows"))] pub const CHAINS_PATH: &str = "$BASE/chains";
 
 /// Platform-specific cache path - Windows only
-#[cfg(target_os = "windows")] pub const CACHE_PATH: &'static str = "$LOCAL/cache";
+#[cfg(target_os = "windows")] pub const CACHE_PATH: &str = "$LOCAL/cache";
 /// Platform-specific cache path
-#[cfg(not(target_os = "windows"))] pub const CACHE_PATH: &'static str = "$BASE/cache";
+#[cfg(not(target_os = "windows"))] pub const CACHE_PATH: &str = "$BASE/cache";
 
 // this const is irrelevent cause we do have migrations now,
 // but we still use it for backwards compatibility
-const LEGACY_CLIENT_DB_VER_STR: &'static str = "5.3";
+const LEGACY_CLIENT_DB_VER_STR: &str = "5.3";
 
 #[derive(Debug, PartialEq)]
 /// Parity local data directories
@@ -239,7 +242,7 @@ pub fn default_hypervisor_path() -> PathBuf {
 
 /// Get home directory.
 fn home() -> PathBuf {
-	env::home_dir().expect("Failed to get home dir")
+	dirs::home_dir().expect("Failed to get home dir")
 }
 
 /// Geth path
@@ -312,9 +315,9 @@ mod platform {
 #[cfg(not(any(target_os = "macos", windows)))]
 mod platform {
 	use std::path::PathBuf;
-	pub const AUTHOR: &'static str = "parity";
-	pub const PRODUCT: &'static str = "io.parity.ethereum";
-	pub const PRODUCT_HYPERVISOR: &'static str = "io.parity.ethereum-updates";
+	pub const AUTHOR: &str = "parity";
+	pub const PRODUCT: &str = "io.parity.ethereum";
+	pub const PRODUCT_HYPERVISOR: &str = "io.parity.ethereum-updates";
 
 	pub fn parity_base() -> PathBuf {
 		let mut home = super::home();

util/dir/src/lib.rs

@@ -1,6 +1,8 @@
 [package]
 name = "path"
-version = "0.1.0"
-authors = ["debris <[email protected]>"]
+version = "0.1.1"
+authors = ["Parity Technologies <[email protected]>"]
+license = "GPL3"
 
 [dependencies]
+dirs = "1.0.2"

util/path/Cargo.toml

@@ -15,14 +15,16 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Path utilities
+extern crate dirs;
+
 use std::path::Path;
 use std::path::PathBuf;
 
 #[cfg(target_os = "macos")]
 /// Get the config path for application `name`.
 /// `name` should be capitalized, e.g. `"Ethereum"`, `"Parity"`.
 pub fn config_path(name: &str) -> PathBuf {
-	let mut home = ::std::env::home_dir().expect("Failed to get home dir");
+	let mut home = dirs::home_dir().expect("Failed to get home dir");
 	home.push("Library");
 	home.push(name);
 	home
@@ -32,7 +34,7 @@ pub fn config_path(name: &str) -> PathBuf {
 /// Get the config path for application `name`.
 /// `name` should be capitalized, e.g. `"Ethereum"`, `"Parity"`.
 pub fn config_path(name: &str) -> PathBuf {
-	let mut home = ::std::env::home_dir().expect("Failed to get home dir");
+	let mut home = dirs::home_dir().expect("Failed to get home dir");
 	home.push("AppData");
 	home.push("Roaming");
 	home.push(name);
@@ -43,7 +45,7 @@ pub fn config_path(name: &str) -> PathBuf {
 /// Get the config path for application `name`.
 /// `name` should be capitalized, e.g. `"Ethereum"`, `"Parity"`.
 pub fn config_path(name: &str) -> PathBuf {
-	let mut home = ::std::env::home_dir().expect("Failed to get home dir");
+	let mut home = dirs::home_dir().expect("Failed to get home dir");
 	home.push(format!(".{}", name.to_lowercase()));
 	home
 }