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Switch to windows-sys #29

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Mar 22, 2024
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8 changes: 6 additions & 2 deletions opener/Cargo.toml
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ maintenance = { status = "passively-maintained" }

[features]
default = ["dbus-vendored"]
reveal = ["dep:url", "dep:dbus", "winapi/shtypes", "winapi/objbase"]
reveal = ["dep:url", "dep:dbus", "windows-sys/Win32_System_Com"]
dbus-vendored = ["dbus/vendored"]

[dev-dependencies]
Expand All @@ -28,7 +28,11 @@ url = { version = "2", optional = true }

[target.'cfg(windows)'.dependencies]
normpath = "1"
winapi = { version = "0.3", features = ["shellapi", "winerror"] }
windows-sys = { version = "0.52", features = [
"Win32_Foundation",
"Win32_UI_Shell",
"Win32_UI_WindowsAndMessaging",
] }

[package.metadata.docs.rs]
all-features = true
Expand Down
10 changes: 4 additions & 6 deletions opener/src/windows.rs
Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,8 @@ use std::ffi::OsStr;
use std::os::windows::ffi::OsStrExt;
use std::path::PathBuf;
use std::{io, ptr};
use winapi::ctypes::c_int;
use winapi::um::shellapi::ShellExecuteW;
use windows_sys::Win32::UI::Shell::ShellExecuteW;
use windows_sys::Win32::UI::WindowsAndMessaging::SW_SHOW;

#[cfg(feature = "reveal")]
mod reveal;
Expand All @@ -27,21 +27,19 @@ pub(crate) fn open(path: &OsStr) -> Result<(), OpenError> {
}

pub(crate) fn open_helper(path: &OsStr) -> Result<(), OpenError> {
const SW_SHOW: c_int = 5;

let path = convert_path(path).map_err(OpenError::Io)?;
let operation: Vec<u16> = OsStr::new("open\0").encode_wide().collect();
let result = unsafe {
ShellExecuteW(
ptr::null_mut(),
0,
operation.as_ptr(),
path.as_ptr(),
ptr::null(),
ptr::null(),
SW_SHOW,
)
};
if result as c_int > 32 {
if result > 32 {
Ok(())
} else {
Err(OpenError::Io(io::Error::last_os_error()))
Expand Down
87 changes: 48 additions & 39 deletions opener/src/windows/reveal.rs
Original file line number Diff line number Diff line change
@@ -1,16 +1,12 @@
#![allow(non_camel_case_types, non_snake_case)]

use super::convert_path;
use crate::OpenError;
use normpath::PathExt;
use std::path::Path;
use std::{io, ptr, thread};
use winapi::shared::minwindef::{DWORD, UINT};
use winapi::shared::ntdef::PCWSTR;
use winapi::shared::winerror::HRESULT;
use winapi::um::combaseapi::{CoInitializeEx, CoUninitialize};
use winapi::um::objbase::COINIT_MULTITHREADED;
use winapi::um::shtypes::{
PCIDLIST_ABSOLUTE, PCUITEMID_CHILD_ARRAY, PIDLIST_ABSOLUTE, PIDLIST_RELATIVE,
};
use windows_sys::core::{HRESULT, PCWSTR};
use windows_sys::Win32::System::Com::{CoInitializeEx, CoUninitialize, COINIT_MULTITHREADED};

pub(crate) fn reveal(path: &Path) -> Result<(), OpenError> {
let path = path.to_owned();
Expand All @@ -22,57 +18,70 @@ pub(crate) fn reveal(path: &Path) -> Result<(), OpenError> {
}

fn reveal_in_thread(path: &Path) -> io::Result<()> {
to_io_result(unsafe { CoInitializeEx(ptr::null_mut(), COINIT_MULTITHREADED) })?;
let item_id_list = ItemIdList::new(path)?;
// Because the cidl argument is zero, SHOpenFolderAndSelectItems opens the singular item
// in our item id list in its containing folder and selects it.
to_io_result(unsafe { SHOpenFolderAndSelectItems(item_id_list.0, 0, ptr::null(), 0) })?;
unsafe { CoUninitialize() };
Ok(())
}

fn to_io_result(hresult: HRESULT) -> io::Result<()> {
if hresult >= 0 {
Ok(())
} else {
// See the HRESULT_CODE macro in winerror.h
Err(io::Error::from_raw_os_error(hresult & 0xFFFF))
unsafe {
to_io_result(CoInitializeEx(ptr::null_mut(), COINIT_MULTITHREADED as u32))?;
}
}

struct ItemIdList(PIDLIST_ABSOLUTE);

impl ItemIdList {
fn new(path: &Path) -> io::Result<Self> {
let item_id_list = {
// The ILCreateFromPathW function expects a canonicalized path.
// Unfortunately it does not support NT UNC paths (which std::path::canonicalize returns)
// so we use the normpath crate instead.
let path = convert_path(path.normalize()?.as_os_str())?;
let result = unsafe { ILCreateFromPathW(path.as_ptr()) };
if result.is_null() {
Err(io::Error::last_os_error())
return Err(io::Error::last_os_error());
} else {
Ok(ItemIdList(result))
result
}
};

unsafe {
// Because the cidl argument is zero, SHOpenFolderAndSelectItems opens the singular item
// in our item id list in its containing folder and selects it.
let result = to_io_result(SHOpenFolderAndSelectItems(item_id_list, 0, ptr::null(), 0));
ILFree(item_id_list);
CoUninitialize();

result
}
}

impl Drop for ItemIdList {
fn drop(&mut self) {
unsafe { ILFree(self.0) }
fn to_io_result(hresult: HRESULT) -> io::Result<()> {
if hresult >= 0 {
Ok(())
} else {
// See the HRESULT_CODE macro in winerror.h
Err(io::Error::from_raw_os_error(hresult & 0xFFFF))
}
}

//
//
//

#[repr(C)]
#[repr(packed)]
struct ITEMIDLIST {
mkid: SHITEMID,
}

#[repr(C)]
#[repr(packed)]
struct SHITEMID {
cb: u16,
abID: [u8; 1],
}

#[link(name = "Shell32")]
extern "C" {
fn ILCreateFromPathW(pszPath: PCWSTR) -> PIDLIST_ABSOLUTE;
fn ILCreateFromPathW(pszPath: PCWSTR) -> *mut ITEMIDLIST;

fn ILFree(pidl: PIDLIST_RELATIVE);
fn ILFree(pidl: *mut ITEMIDLIST);

fn SHOpenFolderAndSelectItems(
pidlFolder: PCIDLIST_ABSOLUTE,
cidl: UINT,
apidl: PCUITEMID_CHILD_ARRAY,
dwFlags: DWORD,
pidlFolder: *const ITEMIDLIST,
cidl: u32,
apidl: *const *const ITEMIDLIST,
dwFlags: u32,
) -> HRESULT;
}
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