feat: implémentation complete v0.1.0 — daemon de sync clipboard bidirectionnel

internal/clipboard/clipboard_linux.go

@@ -0,0 +1,81 @@
+//go:build linux
+
+package clipboard
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+type linuxClipboard struct {
+	copyCmd  string   // "xclip" or "wl-copy"
+	pasteCmd string   // "xclip" or "wl-paste"
+	copyArgs []string // e.g. ["-selection", "clipboard"] for xclip
+}
+
+// New creates a Linux clipboard (X11 xclip or Wayland wl-clipboard).
+func New() (Clipboard, error) {
+	return newLinuxClipboard()
+}
+
+func newLinuxClipboard() (*linuxClipboard, error) {
+	sessionType := os.Getenv("XDG_SESSION_TYPE")
+
+	if strings.EqualFold(sessionType, "wayland") {
+		if err := checkBinary("wl-copy"); err != nil {
+			return nil, fmt.Errorf("clip-sync: Wayland detected but wl-copy not found: %w", err)
+		}
+		if err := checkBinary("wl-paste"); err != nil {
+			return nil, fmt.Errorf("clip-sync: Wayland detected but wl-paste not found: %w", err)
+		}
+		return &linuxClipboard{
+			copyCmd:  "wl-copy",
+			pasteCmd: "wl-paste",
+			copyArgs: nil, // wl-copy reads from stdin by default
+		}, nil
+	}
+
+	// Default: X11 via xclip
+	if err := checkBinary("xclip"); err != nil {
+		return nil, fmt.Errorf("clip-sync: xclip not found (install xclip for X11 or wl-clipboard for Wayland): %w", err)
+	}
+	return &linuxClipboard{
+		copyCmd:  "xclip",
+		pasteCmd: "xclip",
+		copyArgs: []string{"-selection", "clipboard"},
+	}, nil
+}
+
+func (c *linuxClipboard) Read() (string, error) {
+	args := []string{"-selection", "clipboard", "-o"}
+	if c.pasteCmd == "wl-paste" {
+		args = nil // wl-paste needs no args
+	}
+
+	cmd := exec.Command(c.pasteCmd, args...)
+	out, err := cmd.Output()
+	if err != nil {
+		return "", fmt.Errorf("clipboard read (%s): %w", c.pasteCmd, err)
+	}
+	return strings.TrimRight(string(out), "\n\r"), nil
+}
+
+func (c *linuxClipboard) Write(text string) error {
+	cmd := exec.Command(c.copyCmd, c.copyArgs...)
+	cmd.Stdin = strings.NewReader(text)
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("clipboard write (%s): %w", c.copyCmd, err)
+	}
+	return nil
+}
+
+// checkBinary verifies that a command exists in $PATH.
+func checkBinary(name string) error {
+	_, err := exec.LookPath(name)
+	if err != nil {
+		return fmt.Errorf("%s: %w", name, err)
+	}
+	return nil
+}