Initial push to gitea

internal/output/clipboard.go

@@ -0,0 +1,30 @@
+package output
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+// CopyToClipboard tries platform-appropriate clipboard tools and writes data
+// to the first one available: wl-copy (Wayland), xclip (X11), pbcopy (macOS).
+// Returns the tool name used or an error if none are available.
+func CopyToClipboard(data string) (string, error) {
+	candidates := [][]string{
+		{"wl-copy"},
+		{"xclip", "-selection", "clipboard"},
+		{"pbcopy"},
+	}
+	for _, c := range candidates {
+		if _, err := exec.LookPath(c[0]); err != nil {
+			continue
+		}
+		cmd := exec.Command(c[0], c[1:]...)
+		cmd.Stdin = strings.NewReader(data)
+		if err := cmd.Run(); err != nil {
+			return "", fmt.Errorf("%s: %w", c[0], err)
+		}
+		return c[0], nil
+	}
+	return "", fmt.Errorf("no clipboard tool found (tried wl-copy, xclip, pbcopy)")
+}