Added native Windows clipboard support (#373)

* Added native Windows clipboard support

* make conditional

wip

better conditional

wip

wip

wip

wip

make conditional

Cargo.lock

@@ -100,6 +100,17 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "clipboard-win"
+version = "4.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e4ea1881992efc993e4dc50a324cdbd03216e41bdc8385720ff47efc9bd2ca8"
+dependencies = [
+ "error-code",
+ "str-buf",
+ "winapi",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.5"
@@ -172,6 +183,16 @@ dependencies = [
  "cfg-if 1.0.0",
 ]
 
+[[package]]
+name = "error-code"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5115567ac25674e0043e472be13d14e537f37ea8aa4bdc4aef0c89add1db1ff"
+dependencies = [
+ "libc",
+ "str-buf",
+]
+
 [[package]]
 name = "etcetera"
 version = "0.3.2"
@@ -383,6 +404,7 @@ dependencies = [
  "anyhow",
  "bitflags",
  "chardetng",
+ "clipboard-win",
  "crossterm",
  "encoding_rs",
  "futures-util",
@@ -871,6 +893,12 @@ version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
 
+[[package]]
+name = "str-buf"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d44a3643b4ff9caf57abcee9c2c621d6c03d9135e0d8b589bd9afb5992cb176a"
+
 [[package]]
 name = "syn"
 version = "1.0.73"

helix-view/Cargo.toml

@@ -38,5 +38,8 @@ log = "~0.4"
 
 which = "4.1"
 
+[target.'cfg(windows)'.dependencies]
+clipboard-win = { version = "4.2", features = ["std"] }
+
 [dev-dependencies]
 helix-tui = { path = "../helix-tui" }

helix-view/src/clipboard.rs

@@ -77,7 +77,11 @@ pub fn get_clipboard_provider() -> Box<dyn ClipboardProvider> {
             copy => "tmux", "load-buffer", "-";
         }
     } else {
-        Box::new(provider::NopProvider)
+        #[cfg(target_os = "windows")]
+        return Box::new(provider::WindowsProvider);
+
+        #[cfg(not(target_os = "windows"))]
+        return Box::new(provider::NopProvider);
     }
 }
 
@@ -120,6 +124,27 @@ fn set_contents(&self, _: String) -> Result<()> {
         }
     }
 
+    #[cfg(target_os = "windows")]
+    #[derive(Debug)]
+    pub struct WindowsProvider;
+
+    #[cfg(target_os = "windows")]
+    impl ClipboardProvider for WindowsProvider {
+        fn name(&self) -> Cow<str> {
+            Cow::Borrowed("clipboard-win")
+        }
+
+        fn get_contents(&self) -> Result<String> {
+            let contents = clipboard_win::get_clipboard(clipboard_win::formats::Unicode)?;
+            Ok(contents)
+        }
+
+        fn set_contents(&self, contents: String) -> Result<()> {
+            clipboard_win::set_clipboard(clipboard_win::formats::Unicode, contents)?;
+            Ok(())
+        }
+    }
+
     #[derive(Debug)]
     pub struct CommandConfig {
         pub prg: &'static str,