feat(info): implement app info provider on Windows

espanso-info/build.rs

@@ -25,9 +25,9 @@ fn cc_config() {
     .cpp(true)
     .include("src/win32/native.h")
     .file("src/win32/native.cpp")
-    .compile("espansoclipboard");
+    .compile("espansoinfo");
 
-  println!("cargo:rustc-link-lib=static=espansoclipboard");
+  println!("cargo:rustc-link-lib=static=espansoinfo");
   println!("cargo:rustc-link-lib=dylib=user32");
   #[cfg(target_env = "gnu")]
   println!("cargo:rustc-link-lib=dylib=stdc++");

espanso-info/src/lib.rs

@@ -46,9 +46,9 @@ pub struct AppInfo {
 }
 
 #[cfg(target_os = "windows")]
-pub fn get_clipboard(_: ClipboardOptions) -> Result<Box<dyn Clipboard>> {
+pub fn get_provider() -> Result<Box<dyn AppInfoProvider>> {
-  info!("using Win32Clipboard");
+  info!("using Win32AppInfoProvider");
-  Ok(Box::new(win32::Win32Clipboard::new()?))
+  Ok(Box::new(win32::WinAppInfoProvider::new()))
 }
 
 #[cfg(target_os = "macos")]

espanso-info/src/win32/ffi.rs

@@ -0,0 +1,24 @@
+/*
+ * This file is part of espanso.
+ *
+ * Copyright (C) 2019-2021 Federico Terzi
+ *
+ * espanso is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * espanso is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with espanso.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#[link(name = "espansoinfo", kind = "static")]
+extern "C" {
+  pub fn info_get_title(buffer: *mut u16, buffer_size: i32) -> i32;
+  pub fn info_get_exec(buffer: *mut u16, buffer_size: i32) -> i32;
+}

espanso-info/src/win32/mod.rs

@@ -0,0 +1,76 @@
+/*
+ * This file is part of espanso.
+ *
+ * Copyright (C) 2019-2021 Federico Terzi
+ *
+ * espanso is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * espanso is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with espanso.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+use widestring::U16CStr;
+
+use crate::{AppInfo, AppInfoProvider};
+
+use self::ffi::{info_get_exec, info_get_title};
+
+mod ffi;
+
+pub struct WinAppInfoProvider {}
+
+impl WinAppInfoProvider {
+  pub fn new() -> Self {
+    Self {}
+  }
+}
+
+impl AppInfoProvider for WinAppInfoProvider {
+  fn get_info(&self) -> AppInfo {
+    AppInfo {
+      title: self.get_title(),
+      class: None,
+      exec: self.get_exec(),
+    }
+  }
+}
+
+impl WinAppInfoProvider {
+  fn get_exec(&self) -> Option<String> {
+    let mut buffer: [u16; 2048] = [0; 2048];
+    if unsafe { info_get_exec(buffer.as_mut_ptr(), (buffer.len() - 1) as i32) } != 0 {
+      let string = unsafe { U16CStr::from_ptr_str(buffer.as_ptr()) };
+      let string = string.to_string_lossy();
+      if !string.is_empty() {
+        Some(string)
+      } else {
+        None
+      }
+    } else {
+      None
+    }
+  }
+
+  fn get_title(&self) -> Option<String> {
+    let mut buffer: [u16; 2048] = [0; 2048];
+    if unsafe { info_get_title(buffer.as_mut_ptr(), (buffer.len() - 1) as i32) } > 0 {
+      let string = unsafe { U16CStr::from_ptr_str(buffer.as_ptr()) };
+      let string = string.to_string_lossy();
+      if !string.is_empty() {
+        Some(string)
+      } else {
+        None
+      }
+    } else {
+      None
+    }
+  }
+}

espanso-info/src/win32/native.cpp

@@ -0,0 +1,65 @@
+/*
+ * This file is part of espanso.
+ *
+ * Copyright (C) 2019-2021 Federico Terzi
+ *
+ * espanso is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * espanso is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with espanso.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "native.h"
+#include <iostream>
+#include <stdio.h>
+#include <string>
+#include <vector>
+#include <memory>
+#include <array>
+
+#define UNICODE
+
+#ifdef __MINGW32__
+#ifndef WINVER
+#define WINVER 0x0606
+#endif
+#define STRSAFE_NO_DEPRECATE
+#endif
+
+#include <windows.h>
+#include <winuser.h>
+#include <strsafe.h>
+
+#include <Windows.h>
+
+int32_t info_get_title(wchar_t *buffer, int32_t buffer_size)
+{
+  HWND hwnd = GetForegroundWindow();
+  return GetWindowText(hwnd, buffer, buffer_size);
+}
+
+int32_t info_get_exec(wchar_t *buffer, int32_t buffer_size)
+{
+  HWND hwnd = GetForegroundWindow();
+
+  // Extract the window PID
+  DWORD windowPid;
+  GetWindowThreadProcessId(hwnd, &windowPid);
+
+  DWORD dsize = (DWORD)buffer_size;
+
+  // Extract the process executable file path
+  HANDLE process = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, windowPid);
+  int res = QueryFullProcessImageNameW(process, 0, buffer, &dsize);
+  CloseHandle(process);
+
+  return res;
+}

espanso-info/src/win32/native.h

@@ -0,0 +1,28 @@
+/*
+ * This file is part of espanso.
+ *
+ * Copyright (C) 2019-2021 Federico Terzi
+ *
+ * espanso is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * espanso is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with espanso.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ESPANSO_INFO_H
+#define ESPANSO_INFO_H
+
+#include <stdint.h>
+
+extern "C" int32_t info_get_title(wchar_t * buffer, int32_t buffer_size);
+extern "C" int32_t info_get_exec(wchar_t * buffer, int32_t buffer_size);
+
+#endif //ESPANSO_INFO_H