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// Copyright 2023, Igor Shaula
// Licensed under the MIT License <LICENSE or
// http://opensource.org/licenses/MIT>. This file
// may not be copied, modified, or distributed
// except according to those terms.
//! Crate for accessing MS Windows registry
//!
//!## Usage
//!
//!### Basic usage
//!
//!```toml,ignore
//!# Cargo.toml
//![dependencies]
//!winreg = "0.56"
//!```
//!
//!```no_run
//!use std::io;
//!use std::path::Path;
//!use winreg::enums::*;
//!use winreg::{HKCU, HKLM};
//!
//!fn main() -> io::Result<()> {
//! println!("Reading some system info...");
//! let cur_ver = HKLM.open_subkey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion")?;
//! let pf: String = cur_ver.get_value("ProgramFilesDir")?;
//! let dp: String = cur_ver.get_value("DevicePath")?;
//! println!("ProgramFiles = {}\nDevicePath = {}", pf, dp);
//! let info = cur_ver.query_info()?;
//! println!("info = {:?}", info);
//! let mt = info.get_last_write_time_system();
//! println!(
//! "last_write_time as windows_sys::Win32::Foundation::SYSTEMTIME = {}-{:02}-{:02} {:02}:{:02}:{:02}",
//! mt.wYear, mt.wMonth, mt.wDay, mt.wHour, mt.wMinute, mt.wSecond
//! );
//!
//! // enable `chrono` feature on `winreg` to make this work
//! // println!(
//! // "last_write_time as chrono::NaiveDateTime = {}",
//! // info.get_last_write_time_chrono()
//! // );
//!
//! println!("And now lets write something...");
//! let path = Path::new("Software").join("WinregRsExample1");
//! let (key, disp) = HKCU.create_subkey(&path)?;
//!
//! match disp {
//! REG_CREATED_NEW_KEY => println!("A new key has been created"),
//! REG_OPENED_EXISTING_KEY => println!("An existing key has been opened"),
//! }
//!
//! key.set_value("TestSZ", &"written by Rust")?;
//! let sz_val: String = key.get_value("TestSZ")?;
//! key.delete_value("TestSZ")?;
//! println!("TestSZ = {}", sz_val);
//!
//! key.set_value("TestMultiSZ", &vec!["written", "by", "Rust"])?;
//! let multi_sz_val: Vec<String> = key.get_value("TestMultiSZ")?;
//! key.delete_value("TestMultiSZ")?;
//! println!("TestMultiSZ = {:?}", multi_sz_val);
//!
//! key.set_value("TestDWORD", &1234567890u32)?;
//! let dword_val: u32 = key.get_value("TestDWORD")?;
//! println!("TestDWORD = {}", dword_val);
//!
//! key.set_value("TestQWORD", &1234567891011121314u64)?;
//! let qword_val: u64 = key.get_value("TestQWORD")?;
//! println!("TestQWORD = {}", qword_val);
//!
//! key.create_subkey("sub\\key")?;
//! HKCU.delete_subkey_all(&path)?;
//!
//! println!("Trying to open nonexistent key...");
//! HKCU.open_subkey(&path).unwrap_or_else(|e| match e.kind() {
//! io::ErrorKind::NotFound => panic!("Key doesn't exist"),
//! io::ErrorKind::PermissionDenied => panic!("Access denied"),
//! _ => panic!("{:?}", e),
//! });
//! Ok(())
//!}
//!```
//!
//!### Iterators
//!
//!```no_run
//!use std::io;
//!use winreg::{HKCR, HKLM};
//!
//!fn main() -> io::Result<()> {
//! println!("File extensions, registered in system:");
//! for i in HKCR.enum_keys().map(|x| x.unwrap())
//! .filter(|x| x.starts_with("."))
//! {
//! println!("{}", i);
//! }
//!
//! let system = HKLM.open_subkey("HARDWARE\\DESCRIPTION\\System")?;
//! for (name, value) in system.enum_values().map(|x| x.unwrap()) {
//! println!("{} = {:?}", name, value);
//! }
//!
//! Ok(())
//!}
//!```
//!
cfg_if!