1#[macro_use]
2extern crate cfg_if;
3
4use std::ffi::OsString;
5use std::path::PathBuf;
6use std::env;
7
8pub fn is_absolute_path(path: OsString) -> Option<PathBuf> {
11 let path = PathBuf::from(path);
12 if path.is_absolute() {
13 Some(path)
14 } else {
15 None
16 }
17}
18
19
20cfg_if! { if #[cfg(all(unix, not(target_os = "redox")))] {
21
22extern crate libc;
23
24use std::ffi::CStr;
25use std::mem;
26use std::os::unix::ffi::OsStringExt;
27use std::ptr;
28
29pub fn home_dir() -> Option<PathBuf> {
31 return env::var_os("HOME")
32 .and_then(|h| if h.is_empty() { None } else { Some(h) })
33 .or_else(|| unsafe { fallback() })
34 .map(PathBuf::from);
35
36 #[cfg(any(target_os = "android", target_os = "ios", target_os = "emscripten"))]
37 unsafe fn fallback() -> Option<OsString> {
38 None
39 }
40 #[cfg(not(any(target_os = "android", target_os = "ios", target_os = "emscripten")))]
41 unsafe fn fallback() -> Option<OsString> {
42 let amt = match libc::sysconf(libc::_SC_GETPW_R_SIZE_MAX) {
43 n if n < 0 => 512 as usize,
44 n => n as usize,
45 };
46 let mut buf = Vec::with_capacity(amt);
47 let mut passwd: libc::passwd = mem::zeroed();
48 let mut result = ptr::null_mut();
49 match libc::getpwuid_r(
50 libc::getuid(),
51 &mut passwd,
52 buf.as_mut_ptr(),
53 buf.capacity(),
54 &mut result,
55 ) {
56 0 if !result.is_null() => {
57 let ptr = passwd.pw_dir as *const _;
58 let bytes = CStr::from_ptr(ptr).to_bytes();
59 if bytes.is_empty() {
60 None
61 } else {
62 Some(OsStringExt::from_vec(bytes.to_vec()))
63 }
64 }
65 _ => None,
66 }
67 }
68}
69
70}}
71
72
73cfg_if! { if #[cfg(target_os = "redox")] {
74
75extern crate redox_users;
76
77use self::redox_users::All;
78use self::redox_users::AllUsers;
79use self::redox_users::Config;
80
81pub fn home_dir() -> Option<PathBuf> {
82 let current_uid = redox_users::get_uid().ok()?;
83 let users = AllUsers::new(Config::default()).ok()?;
84 let user = users.get_by_id(current_uid)?;
85
86 Some(PathBuf::from(user.home.clone()))
87}
88
89}}
90
91cfg_if! { if #[cfg(all(unix, not(any(target_os = "macos", target_os = "ios"))))] {
92
93mod xdg_user_dirs;
94
95use std::path::Path;
96
97use std::collections::HashMap;
98
99fn user_dir_file(home_dir: &Path) -> PathBuf {
100 env::var_os("XDG_CONFIG_HOME").and_then(is_absolute_path).unwrap_or_else(|| home_dir.join(".config")).join("user-dirs.dirs")
101}
102
103pub fn user_dir(user_dir_name: &str) -> Option<PathBuf> {
105 if let Some(home_dir) = home_dir() {
106 xdg_user_dirs::single(&home_dir, &user_dir_file(&home_dir), user_dir_name).remove(user_dir_name)
107 } else {
108 None
109 }
110}
111
112pub fn user_dirs(home_dir_path: &Path) -> HashMap<String, PathBuf> {
113 xdg_user_dirs::all(home_dir_path, &user_dir_file(home_dir_path))
114}
115}}
116
117
118cfg_if! { if #[cfg(target_os = "windows")] {
119
120extern crate winapi;
121use self::winapi::shared::winerror;
122use self::winapi::um::combaseapi;
123use self::winapi::um::knownfolders;
124use self::winapi::um::shlobj;
125use self::winapi::um::shtypes;
126use self::winapi::um::winbase;
127use self::winapi::um::winnt;
128
129pub fn known_folder(folder_id: shtypes::REFKNOWNFOLDERID) -> Option<PathBuf> {
130 unsafe {
131 let mut path_ptr: winnt::PWSTR = std::ptr::null_mut();
132 let result = shlobj::SHGetKnownFolderPath(folder_id, 0, std::ptr::null_mut(), &mut path_ptr);
133 if result == winerror::S_OK {
134 let len = winbase::lstrlenW(path_ptr) as usize;
135 let path = std::slice::from_raw_parts(path_ptr, len);
136 let ostr: std::ffi::OsString = std::os::windows::ffi::OsStringExt::from_wide(path);
137 combaseapi::CoTaskMemFree(path_ptr as *mut winapi::ctypes::c_void);
138 Some(PathBuf::from(ostr))
139 } else {
140 None
141 }
142 }
143}
144
145pub fn known_folder_profile() -> Option<PathBuf> {
146 known_folder(&knownfolders::FOLDERID_Profile)
147}
148
149pub fn known_folder_roaming_app_data() -> Option<PathBuf> {
150 known_folder(&knownfolders::FOLDERID_RoamingAppData)
151}
152
153pub fn known_folder_local_app_data() -> Option<PathBuf> {
154 known_folder(&knownfolders::FOLDERID_LocalAppData)
155}
156
157pub fn known_folder_music() -> Option<PathBuf> {
158 known_folder(&knownfolders::FOLDERID_Music)
159}
160
161pub fn known_folder_desktop() -> Option<PathBuf> {
162 known_folder(&knownfolders::FOLDERID_Desktop)
163}
164
165pub fn known_folder_documents() -> Option<PathBuf> {
166 known_folder(&knownfolders::FOLDERID_Documents)
167}
168
169pub fn known_folder_downloads() -> Option<PathBuf> {
170 known_folder(&knownfolders::FOLDERID_Downloads)
171}
172
173pub fn known_folder_pictures() -> Option<PathBuf> {
174 known_folder(&knownfolders::FOLDERID_Pictures)
175}
176
177pub fn known_folder_public() -> Option<PathBuf> {
178 known_folder(&knownfolders::FOLDERID_Public)
179}
180pub fn known_folder_templates() -> Option<PathBuf> {
181 known_folder(&knownfolders::FOLDERID_Templates)
182}
183pub fn known_folder_videos() -> Option<PathBuf> {
184 known_folder(&knownfolders::FOLDERID_Videos)
185}
186
187}}