Implement X11 clipboard support via xclip

src/offline/copyWIN.go

@@ -0,0 +1,47 @@
+//go:build windows
+
+package offline
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+)
+
+// TODO Handle cmd.Run errors, especially those due to missing clipboard utilities
+// TODO Handle index out of range errors when copying fields that do not exist
+
+// CopyField copies a field from an entry to the clipboard
+func CopyField(targetLocation string, field uint8, executableName string) {
+	if isFile, _ := TargetIsFile(targetLocation, true); isFile {
+		copySubject := DecryptGPG(targetLocation)[field]
+
+		cmd := exec.Command("powershell.exe", "-c", fmt.Sprintf("echo '%s' | Set-Clipboard", copySubject))
+		cmd.Run()
+
+		cmd = exec.Command(executableName, "clipclear")
+		writeToStdin(cmd, copySubject)
+		cmd.Start()
+
+	} else {
+		fmt.Println(AnsiError + "Failed to read \"" + targetLocation + "\" - it is a directory" + AnsiReset)
+	}
+	os.Exit(0)
+}
+
+// ClipClear is called in a separate process to clear the clipboard after 30 seconds
+// TODO Make clear time period configurable
+func ClipClear(oldContents string) {
+	time.Sleep(30 * time.Second)
+
+	cmd := exec.Command("powershell.exe", "-c", "Get-Clipboard")
+	newContents, _ := cmd.Output()
+
+	if oldContents == strings.TrimRight(string(newContents), "\r\n") {
+		cmd = exec.Command("powershell.exe", "-c", "Set-Clipboard")
+		cmd.Run()
+	}
+	os.Exit(0)
+}