--- /dev/null
+#![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,
+};
projects / rustc.git / blobdiff