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Diffstat (limited to 'third_party/rust/gcc/src/registry.rs')
| -rw-r--r-- | third_party/rust/gcc/src/registry.rs | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/third_party/rust/gcc/src/registry.rs b/third_party/rust/gcc/src/registry.rs deleted file mode 100644 index d871cd21f..000000000 --- a/third_party/rust/gcc/src/registry.rs +++ /dev/null @@ -1,169 +0,0 @@ -// Copyright 2015 The Rust Project Developers. See the COPYRIGHT -// file at the top-level directory of this distribution and at -// http://rust-lang.org/COPYRIGHT. -// -// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or -// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license -// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your -// option. This file may not be copied, modified, or distributed -// except according to those terms. - -use std::ffi::{OsString, OsStr}; -use std::io; -use std::ops::RangeFrom; -use std::os::raw; -use std::os::windows::prelude::*; - -pub struct RegistryKey(Repr); - -type HKEY = *mut u8; -type DWORD = u32; -type LPDWORD = *mut DWORD; -type LPCWSTR = *const u16; -type LPWSTR = *mut u16; -type LONG = raw::c_long; -type PHKEY = *mut HKEY; -type PFILETIME = *mut u8; -type LPBYTE = *mut u8; -type REGSAM = u32; - -const ERROR_SUCCESS: DWORD = 0; -const ERROR_NO_MORE_ITEMS: DWORD = 259; -const HKEY_LOCAL_MACHINE: HKEY = 0x80000002 as HKEY; -const REG_SZ: DWORD = 1; -const KEY_READ: DWORD = 0x20019; -const KEY_WOW64_32KEY: DWORD = 0x200; - -#[link(name = "advapi32")] -extern "system" { - fn RegOpenKeyExW(key: HKEY, - lpSubKey: LPCWSTR, - ulOptions: DWORD, - samDesired: REGSAM, - phkResult: PHKEY) -> LONG; - fn RegEnumKeyExW(key: HKEY, - dwIndex: DWORD, - lpName: LPWSTR, - lpcName: LPDWORD, - lpReserved: LPDWORD, - lpClass: LPWSTR, - lpcClass: LPDWORD, - lpftLastWriteTime: PFILETIME) -> LONG; - fn RegQueryValueExW(hKey: HKEY, - lpValueName: LPCWSTR, - lpReserved: LPDWORD, - lpType: LPDWORD, - lpData: LPBYTE, - lpcbData: LPDWORD) -> LONG; - fn RegCloseKey(hKey: HKEY) -> LONG; -} - -struct OwnedKey(HKEY); - -enum Repr { - Const(HKEY), - Owned(OwnedKey), -} - -pub struct Iter<'a> { - idx: RangeFrom<DWORD>, - key: &'a RegistryKey, -} - -unsafe impl Sync for Repr {} -unsafe impl Send for Repr {} - -pub static LOCAL_MACHINE: RegistryKey = - RegistryKey(Repr::Const(HKEY_LOCAL_MACHINE)); - -impl RegistryKey { - fn raw(&self) -> HKEY { - match self.0 { - Repr::Const(val) => val, - Repr::Owned(ref val) => val.0, - } - } - - pub fn open(&self, key: &OsStr) -> io::Result<RegistryKey> { - let key = key.encode_wide().chain(Some(0)).collect::<Vec<_>>(); - let mut ret = 0 as *mut _; - let err = unsafe { - RegOpenKeyExW(self.raw(), key.as_ptr(), 0, - KEY_READ | KEY_WOW64_32KEY, &mut ret) - }; - if err == ERROR_SUCCESS as LONG { - Ok(RegistryKey(Repr::Owned(OwnedKey(ret)))) - } else { - Err(io::Error::from_raw_os_error(err as i32)) - } - } - - pub fn iter(&self) -> Iter { - Iter { idx: 0.., key: self } - } - - pub fn query_str(&self, name: &str) -> io::Result<OsString> { - let name: &OsStr = name.as_ref(); - let name = name.encode_wide().chain(Some(0)).collect::<Vec<_>>(); - let mut len = 0; - let mut kind = 0; - unsafe { - let err = RegQueryValueExW(self.raw(), name.as_ptr(), 0 as *mut _, - &mut kind, 0 as *mut _, &mut len); - if err != ERROR_SUCCESS as LONG { - return Err(io::Error::from_raw_os_error(err as i32)) - } - if kind != REG_SZ { - return Err(io::Error::new(io::ErrorKind::Other, - "registry key wasn't a string")) - } - - // The length here is the length in bytes, but we're using wide - // characters so we need to be sure to halve it for the capacity - // passed in. - let mut v = Vec::with_capacity(len as usize / 2); - let err = RegQueryValueExW(self.raw(), name.as_ptr(), 0 as *mut _, - 0 as *mut _, v.as_mut_ptr() as *mut _, - &mut len); - if err != ERROR_SUCCESS as LONG { - return Err(io::Error::from_raw_os_error(err as i32)) - } - v.set_len(len as usize / 2); - - // Some registry keys may have a terminating nul character, but - // we're not interested in that, so chop it off if it's there. - if v[v.len() - 1] == 0 { - v.pop(); - } - Ok(OsString::from_wide(&v)) - } - } -} - -impl Drop for OwnedKey { - fn drop(&mut self) { - unsafe { RegCloseKey(self.0); } - } -} - -impl<'a> Iterator for Iter<'a> { - type Item = io::Result<OsString>; - - fn next(&mut self) -> Option<io::Result<OsString>> { - self.idx.next().and_then(|i| unsafe { - let mut v = Vec::with_capacity(256); - let mut len = v.capacity() as DWORD; - let ret = RegEnumKeyExW(self.key.raw(), i, v.as_mut_ptr(), &mut len, - 0 as *mut _, 0 as *mut _, 0 as *mut _, - 0 as *mut _); - if ret == ERROR_NO_MORE_ITEMS as LONG { - None - } else if ret != ERROR_SUCCESS as LONG { - Some(Err(io::Error::from_raw_os_error(ret as i32))) - } else { - v.set_len(len as usize); - Some(Ok(OsString::from_wide(&v))) - } - }) - } -} |