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Initial vendor packages

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Signed-off-by: Valentin Popov <valentin@popov.link>
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Valentin Popov
2024-01-08 01:21:28 +04:00
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{"files":{"Cargo.toml":"1e90fb0b342a93a8bd2d593c71bef703e69b760801099d31202556d3a4db0007","LICENCE-APACHE":"c6c8c9dbe29fb4d68d829c7a402f9f6baae3472ecf107cc2a57c75a9a8d1b85c","LICENCE-MIT":"db264505cb1856383e255c8373da9e5aeadc1cd92b570fcc94fd1fb7d892db78","README.md":"167f3796d716e1bb4a6b98d706fd3c02012dff55d488a24e7de822d896d3cc5a","src/fs.rs":"a7137d7f3a5769cd547daf2be2096a7a664d6114107a3f143c921c4aaab97719","src/lib.rs":"8155ac516b4d054de00d78ce70501175bea7248c0436e4a7f0d35823299f7dc2"},"package":"3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"}

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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies
#
# If you believe there's an error in this file please file an
# issue against the rust-lang/cargo repository. If you're
# editing this file be aware that the upstream Cargo.toml
# will likely look very different (and much more reasonable)
[package]
name = "remove_dir_all"
version = "0.5.3"
authors = ["Aaronepower <theaaronepower@gmail.com>"]
include = ["Cargo.toml", "LICENCE-APACHE", "LICENCE-MIT", "src/**/*", "README.md"]
description = "A safe, reliable implementation of remove_dir_all for Windows"
readme = "README.md"
keywords = ["utility", "filesystem", "remove_dir", "windows"]
categories = ["filesystem"]
license = "MIT/Apache-2.0"
repository = "https://github.com/XAMPPRocky/remove_dir_all.git"
[dev-dependencies.doc-comment]
version = "0.3"
[target."cfg(windows)".dependencies.winapi]
version = "0.3"
features = ["std", "errhandlingapi", "winerror", "fileapi", "winbase"]

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Apache License
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http://www.apache.org/licenses/
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unless required by applicable law (such as deliberate and grossly
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Copyright 2017 Aaron Power
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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Copyright (c) 2017 Aaron Power
Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without
limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice
shall be included in all copies or substantial portions
of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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# remove_dir_all
[![Latest Version](https://img.shields.io/crates/v/remove_dir_all.svg)](https://crates.io/crates/remove_dir_all)
[![Docs](https://docs.rs/remove_dir_all/badge.svg)](https://docs.rs/remove_dir_all)
[![License](https://img.shields.io/github/license/XAMPPRocky/remove_dir_all.svg)](https://github.com/XAMPPRocky/remove_dir_all)
## Description
A reliable implementation of `remove_dir_all` for Windows. For Unix systems
re-exports `std::fs::remove_dir_all`.
```rust,no_run
extern crate remove_dir_all;
use remove_dir_all::*;
fn main() {
remove_dir_all("./temp/").unwrap();
}
```

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use std::ffi::OsString;
use std::fs::{self, File, OpenOptions};
use std::os::windows::prelude::*;
use std::path::{Path, PathBuf};
use std::{io, ptr};
use winapi::shared::minwindef::*;
use winapi::shared::winerror::*;
use winapi::um::errhandlingapi::*;
use winapi::um::fileapi::*;
use winapi::um::minwinbase::*;
use winapi::um::winbase::*;
use winapi::um::winnt::*;
pub const VOLUME_NAME_DOS: DWORD = 0x0;
struct RmdirContext<'a> {
base_dir: &'a Path,
readonly: bool,
counter: u64,
}
/// Reliably removes a directory and all of its children.
///
/// ```rust
/// extern crate remove_dir_all;
///
/// use std::fs;
/// use remove_dir_all::*;
///
/// fn main() {
/// fs::create_dir("./temp/").unwrap();
/// remove_dir_all("./temp/").unwrap();
/// }
/// ```
pub fn remove_dir_all<P: AsRef<Path>>(path: P) -> io::Result<()> {
// On Windows it is not enough to just recursively remove the contents of a
// directory and then the directory itself. Deleting does not happen
// instantaneously, but is scheduled.
// To work around this, we move the file or directory to some `base_dir`
// right before deletion to avoid races.
//
// As `base_dir` we choose the parent dir of the directory we want to
// remove. We very probably have permission to create files here, as we
// already need write permission in this dir to delete the directory. And it
// should be on the same volume.
//
// To handle files with names like `CON` and `morse .. .`, and when a
// directory structure is so deep it needs long path names the path is first
// converted to a `//?/`-path with `get_path()`.
//
// To make sure we don't leave a moved file laying around if the process
// crashes before we can delete the file, we do all operations on an file
// handle. By opening a file with `FILE_FLAG_DELETE_ON_CLOSE` Windows will
// always delete the file when the handle closes.
//
// All files are renamed to be in the `base_dir`, and have their name
// changed to "rm-<counter>". After every rename the counter is increased.
// Rename should not overwrite possibly existing files in the base dir. So
// if it fails with `AlreadyExists`, we just increase the counter and try
// again.
//
// For read-only files and directories we first have to remove the read-only
// attribute before we can move or delete them. This also removes the
// attribute from possible hardlinks to the file, so just before closing we
// restore the read-only attribute.
//
// If 'path' points to a directory symlink or junction we should not
// recursively remove the target of the link, but only the link itself.
//
// Moving and deleting is guaranteed to succeed if we are able to open the
// file with `DELETE` permission. If others have the file open we only have
// `DELETE` permission if they have specified `FILE_SHARE_DELETE`. We can
// also delete the file now, but it will not disappear until all others have
// closed the file. But no-one can open the file after we have flagged it
// for deletion.
// Open the path once to get the canonical path, file type and attributes.
let (path, metadata) = {
let path = path.as_ref();
let mut opts = OpenOptions::new();
opts.access_mode(FILE_READ_ATTRIBUTES);
opts.custom_flags(FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT);
let file = opts.open(path)?;
(get_path(&file)?, path.metadata()?)
};
let mut ctx = RmdirContext {
base_dir: match path.parent() {
Some(dir) => dir,
None => {
return Err(io::Error::new(
io::ErrorKind::PermissionDenied,
"Can't delete root directory",
))
}
},
readonly: metadata.permissions().readonly(),
counter: 0,
};
let filetype = metadata.file_type();
if filetype.is_dir() {
if !filetype.is_symlink() {
remove_dir_all_recursive(path.as_ref(), &mut ctx)
} else {
remove_item(path.as_ref(), &mut ctx)
}
} else {
Err(io::Error::new(
io::ErrorKind::PermissionDenied,
"Not a directory",
))
}
}
fn remove_item(path: &Path, ctx: &mut RmdirContext) -> io::Result<()> {
if ctx.readonly {
// remove read-only permision
let mut permissions = path.metadata()?.permissions();
permissions.set_readonly(false);
fs::set_permissions(path, permissions)?;
}
let mut opts = OpenOptions::new();
opts.access_mode(DELETE);
opts.custom_flags(
FILE_FLAG_BACKUP_SEMANTICS | // delete directory
FILE_FLAG_OPEN_REPARSE_POINT | // delete symlink
FILE_FLAG_DELETE_ON_CLOSE,
);
let file = opts.open(path)?;
move_item(&file, ctx)?;
if ctx.readonly {
// restore read-only flag just in case there are other hard links
match fs::metadata(&path) {
Ok(metadata) => {
let mut perm = metadata.permissions();
perm.set_readonly(true);
fs::set_permissions(&path, perm)?;
}
Err(ref err) if err.kind() == io::ErrorKind::NotFound => {}
err => return err.map(|_| ()),
}
}
Ok(())
}
fn move_item(file: &File, ctx: &mut RmdirContext) -> io::Result<()> {
let mut tmpname = ctx.base_dir.join(format! {"rm-{}", ctx.counter});
ctx.counter += 1;
// Try to rename the file. If it already exists, just retry with an other
// filename.
while let Err(err) = rename(file, &tmpname, false) {
if err.kind() != io::ErrorKind::AlreadyExists {
return Err(err);
};
tmpname = ctx.base_dir.join(format!("rm-{}", ctx.counter));
ctx.counter += 1;
}
Ok(())
}
fn rename(file: &File, new: &Path, replace: bool) -> io::Result<()> {
// &self must be opened with DELETE permission
use std::iter;
#[cfg(target_pointer_width = "32")]
const STRUCT_SIZE: usize = 12;
#[cfg(target_pointer_width = "64")]
const STRUCT_SIZE: usize = 20;
// FIXME: check for internal NULs in 'new'
let mut data: Vec<u16> = iter::repeat(0u16)
.take(STRUCT_SIZE / 2)
.chain(new.as_os_str().encode_wide())
.collect();
data.push(0);
let size = data.len() * 2;
unsafe {
// Thanks to alignment guarantees on Windows this works
// (8 for 32-bit and 16 for 64-bit)
let info = data.as_mut_ptr() as *mut FILE_RENAME_INFO;
// The type of ReplaceIfExists is BOOL, but it actually expects a
// BOOLEAN. This means true is -1, not c::TRUE.
(*info).ReplaceIfExists = if replace { -1 } else { FALSE };
(*info).RootDirectory = ptr::null_mut();
(*info).FileNameLength = (size - STRUCT_SIZE) as DWORD;
let result = SetFileInformationByHandle(
file.as_raw_handle(),
FileRenameInfo,
data.as_mut_ptr() as *mut _ as *mut _,
size as DWORD,
);
if result == 0 {
Err(io::Error::last_os_error())
} else {
Ok(())
}
}
}
fn get_path(f: &File) -> io::Result<PathBuf> {
fill_utf16_buf(
|buf, sz| unsafe { GetFinalPathNameByHandleW(f.as_raw_handle(), buf, sz, VOLUME_NAME_DOS) },
|buf| PathBuf::from(OsString::from_wide(buf)),
)
}
fn remove_dir_all_recursive(path: &Path, ctx: &mut RmdirContext) -> io::Result<()> {
let dir_readonly = ctx.readonly;
for child in fs::read_dir(path)? {
let child = child?;
let child_type = child.file_type()?;
ctx.readonly = child.metadata()?.permissions().readonly();
if child_type.is_dir() {
remove_dir_all_recursive(&child.path(), ctx)?;
} else {
remove_item(&child.path().as_ref(), ctx)?;
}
}
ctx.readonly = dir_readonly;
remove_item(path, ctx)
}
fn fill_utf16_buf<F1, F2, T>(mut f1: F1, f2: F2) -> io::Result<T>
where
F1: FnMut(*mut u16, DWORD) -> DWORD,
F2: FnOnce(&[u16]) -> T,
{
// Start off with a stack buf but then spill over to the heap if we end up
// needing more space.
let mut stack_buf = [0u16; 512];
let mut heap_buf = Vec::new();
unsafe {
let mut n = stack_buf.len();
loop {
let buf = if n <= stack_buf.len() {
&mut stack_buf[..]
} else {
let extra = n - heap_buf.len();
heap_buf.reserve(extra);
heap_buf.set_len(n);
&mut heap_buf[..]
};
// This function is typically called on windows API functions which
// will return the correct length of the string, but these functions
// also return the `0` on error. In some cases, however, the
// returned "correct length" may actually be 0!
//
// To handle this case we call `SetLastError` to reset it to 0 and
// then check it again if we get the "0 error value". If the "last
// error" is still 0 then we interpret it as a 0 length buffer and
// not an actual error.
SetLastError(0);
let k = match f1(buf.as_mut_ptr(), n as DWORD) {
0 if GetLastError() == 0 => 0,
0 => return Err(io::Error::last_os_error()),
n => n,
} as usize;
if k == n && GetLastError() == ERROR_INSUFFICIENT_BUFFER {
n *= 2;
} else if k >= n {
n = k;
} else {
return Ok(f2(&buf[..k]));
}
}
}
}

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//! Reliably remove a directory and all of its children.
//!
//! This library provides a reliable implementation of `remove_dir_all` for Windows.
//! For Unix systems, it re-exports `std::fs::remove_dir_all`.
#![deny(missing_debug_implementations)]
#![deny(missing_docs)]
#[cfg(windows)]
extern crate winapi;
#[cfg(doctest)]
#[macro_use]
extern crate doc_comment;
#[cfg(doctest)]
doctest!("../README.md");
#[cfg(windows)]
mod fs;
#[cfg(windows)]
pub use self::fs::remove_dir_all;
#[cfg(not(windows))]
pub use std::fs::remove_dir_all;