Implement clipboard and QR presentation

crates/storage/src/presentation/platform.rs

@@ -0,0 +1,85 @@
+//! Safe native clipboard adapter selection.
+//!
+//! Desktop adapters are supplied by `arboard`, which owns the operating-system
+//! integration. IronStorage performs no direct FFI and contains no unsafe code.
+
+use super::{ClipboardBackend, ClipboardContent, ClipboardError};
+use crate::repository::SecretBytes;
+
+#[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))]
+pub struct NativeClipboardBackend {
+    clipboard: arboard::Clipboard,
+}
+
+#[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))]
+impl NativeClipboardBackend {
+    pub fn new() -> Result<Self, ClipboardError> {
+        arboard::Clipboard::new()
+            .map(|clipboard| Self { clipboard })
+            .map_err(|_| ClipboardError::Unavailable)
+    }
+}
+
+#[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))]
+impl ClipboardBackend for NativeClipboardBackend {
+    fn read(&mut self) -> Result<ClipboardContent, ClipboardError> {
+        match self.clipboard.get_text() {
+            Ok(value) => Ok(ClipboardContent::text(value.into_bytes())),
+            Err(arboard::Error::ContentNotAvailable) => Ok(ClipboardContent::EmptyOrNonText),
+            Err(arboard::Error::ClipboardNotSupported) => Err(ClipboardError::Unavailable),
+            Err(_) => Err(ClipboardError::ReadFailed),
+        }
+    }
+
+    fn write(&mut self, value: &SecretBytes) -> Result<(), ClipboardError> {
+        let text = std::str::from_utf8(value.expose()).map_err(|_| ClipboardError::NonUtf8)?;
+        set_text(&mut self.clipboard, text).map_err(|error| match error {
+            arboard::Error::ClipboardNotSupported => ClipboardError::Unavailable,
+            _ => ClipboardError::WriteFailed,
+        })
+    }
+
+    fn clear(&mut self) -> Result<(), ClipboardError> {
+        self.clipboard.clear().map_err(|error| match error {
+            arboard::Error::ClipboardNotSupported => ClipboardError::Unavailable,
+            _ => ClipboardError::WriteFailed,
+        })
+    }
+}
+
+#[cfg(target_os = "linux")]
+fn set_text(clipboard: &mut arboard::Clipboard, text: &str) -> Result<(), arboard::Error> {
+    use arboard::SetExtLinux as _;
+
+    clipboard.set().exclude_from_history().text(text)
+}
+
+#[cfg(any(target_os = "macos", target_os = "windows"))]
+fn set_text(clipboard: &mut arboard::Clipboard, text: &str) -> Result<(), arboard::Error> {
+    clipboard.set_text(text)
+}
+
+#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))]
+pub struct NativeClipboardBackend;
+
+#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))]
+impl NativeClipboardBackend {
+    pub fn new() -> Result<Self, ClipboardError> {
+        Err(ClipboardError::Unavailable)
+    }
+}
+
+#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "windows")))]
+impl ClipboardBackend for NativeClipboardBackend {
+    fn read(&mut self) -> Result<ClipboardContent, ClipboardError> {
+        Err(ClipboardError::Unavailable)
+    }
+
+    fn write(&mut self, _value: &SecretBytes) -> Result<(), ClipboardError> {
+        Err(ClipboardError::Unavailable)
+    }
+
+    fn clear(&mut self) -> Result<(), ClipboardError> {
+        Err(ClipboardError::Unavailable)
+    }
+}