Windows implementation

Cargo.toml

@@ -47,7 +47,9 @@ once_cell = "1.7.2"
 [target.'cfg(windows)'.dependencies]
 windows = { version = "0.44.0", features = [
  "Win32_Foundation",
+ "Win32_Storage_EnhancedStorage",
  "Win32_System_Com_StructuredStorage",
+ "Win32_System_SystemServices",
  "Win32_UI_Shell_PropertiesSystem",
 ] }
 scopeguard = "1.2.0"
@@ -61,4 +63,4 @@ pre-build = [
  "cp /tmp/netbsd/usr/lib/libexecinfo.so /usr/local/x86_64-unknown-netbsd/lib",
  "rm base.tar.xz",
  "rm -rf /tmp/netbsd",
-]
+]

src/windows.rs

@@ -1,4 +1,4 @@
-use crate::{Error, TrashContext, TrashItem};
+use crate::{Error, TrashContext, TrashItem, TrashItemMetadata};
 use std::{
  borrow::Borrow,
  ffi::{c_void, OsStr, OsString},
@@ -7,7 +7,10 @@ use std::{
  path::PathBuf,
 };
 use windows::core::{Interface, GUID, PCWSTR, PWSTR};
-use windows::Win32::{Foundation::*, System::Com::*, UI::Shell::PropertiesSystem::*, UI::Shell::*};
+use windows::Win32::{
+ Foundation::*, Storage::EnhancedStorage::*, System::Com::*, System::SystemServices::*,
+ UI::Shell::PropertiesSystem::*, UI::Shell::*,
+};
 
 ///////////////////////////////////////////////////////////////////////////
 // These don't have bindings in windows-rs for some reason
@@ -70,7 +73,7 @@ impl TrashContext {
  }
  }
 
- /// Removes all files and folder paths recursively. 
+ /// Removes all files and folder paths recursively.
  pub(crate) fn delete_all_canonicalized(&self, full_paths: Vec<PathBuf>) -> Result<(), Error> {
  let mut collection = Vec::new();
  traverse_paths_recursively(full_paths, &mut collection)?;
@@ -124,6 +127,43 @@ pub fn list() -> Result<Vec<TrashItem>, Error> {
  }
 }
 
+pub fn metadata(item: &TrashItem) -> Result<TrashItemMetadata, Error> {
+ ensure_com_initialized();
+ unsafe {
+ let id_as_wide: Vec<u16> = item.id.encode_wide().chain(std::iter::once(0)).collect();
+ let parsing_name = PCWSTR(id_as_wide.as_ptr());
+ let item: IShellItem = SHCreateItemFromParsingName(parsing_name, None)?;
+ let is_dir = item.GetAttributes(SFGAO_FOLDER)? == SFGAO_FOLDER;
+ let size = if is_dir {
+ let pesi: IEnumShellItems = item.BindToHandler(None, &BHID_EnumItems)?;
+ let mut size = 0;
+ loop {
+ let mut fetched_count: u32 = 0;
+ let mut arr = [None];
+ pesi.Next(&mut arr, Some(&mut fetched_count as *mut u32))?;
+
+ if fetched_count == 0 {
+ break;
+ }
+
+ match &arr[0] {
+ Some(_item) => {
+ size += 1;
+ }
+ None => {
+ break;
+ }
+ }
+ }
+ size
+ } else {
+ let item2: IShellItem2 = item.cast()?;
+ item2.GetUInt64(&PKEY_Size)?
+ };
+ Ok(TrashItemMetadata { is_dir, size })
+ }
+}
+
 pub fn purge_all<I>(items: I) -> Result<(), Error>
 where
  I: IntoIterator,