Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/third_party/rust/winreg/examples/installed_apps.rs b/third_party/rust/winreg/examples/installed_apps.rs
new file mode 100644
index 0000000000..f7d555b90d
--- /dev/null
+++ b/third_party/rust/winreg/examples/installed_apps.rs
@@ -0,0 +1,43 @@
+// Copyright 2017, 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.
+#[macro_use]
+extern crate serde_derive;
+extern crate winreg;
+use winreg::enums::*;
+use std::collections::HashMap;
+use std::fmt;
+
+#[allow(non_snake_case)]
+#[derive(Debug, Serialize, Deserialize)]
+struct InstalledApp {
+    DisplayName: Option<String>,
+    DisplayVersion: Option<String>,
+    UninstallString: Option<String>
+}
+
+macro_rules! str_from_opt {
+    ($s:expr) => { $s.as_ref().map(|x| &**x).unwrap_or("") }
+}
+
+impl fmt::Display for InstalledApp {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}-{}",
+            str_from_opt!(self.DisplayName),
+            str_from_opt!(self.DisplayVersion))
+    }
+}
+
+fn main() {
+    let hklm = winreg::RegKey::predef(HKEY_LOCAL_MACHINE);
+    let uninstall_key = hklm.open_subkey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall")
+        .expect("key is missing");
+
+    let apps: HashMap<String, InstalledApp> = uninstall_key.decode().expect("deserialization failed");
+
+    for (_k, v) in &apps {
+        println!("{}", v);
+    }
+}