1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/rust/winreg/examples/basic_usage.rs b/third_party/rust/winreg/examples/basic_usage.rs
new file mode 100644
index 0000000000..6422e9eeb2
--- /dev/null
+++ b/third_party/rust/winreg/examples/basic_usage.rs
@@ -0,0 +1,69 @@
+// Copyright 2015, 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.
+extern crate winreg;
+use std::io;
+use std::path::Path;
+use winreg::enums::*;
+use winreg::RegKey;
+
+fn main() -> io::Result<()> {
+    println!("Reading some system info...");
+    let hklm = RegKey::predef(HKEY_LOCAL_MACHINE);
+    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 winapi::um::minwinbase::SYSTEMTIME = {}-{:02}-{:02} {:02}:{:02}:{:02}",
+        mt.wYear, mt.wMonth, mt.wDay, mt.wHour, mt.wMinute, mt.wSecond
+    );
+    println!(
+        "last_write_time as chrono::NaiveDateTime = {}",
+        info.get_last_write_time_chrono()
+    );
+
+    println!("And now lets write something...");
+    let hkcu = RegKey::predef(HKEY_CURRENT_USER);
+    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", &1_234_567_890u32)?;
+    let dword_val: u32 = key.get_value("TestDWORD")?;
+    println!("TestDWORD = {}", dword_val);
+
+    key.set_value("TestQWORD", &1_234_567_891_011_121_314u64)?;
+    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(())
+}