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vendor/github.com/zyedidia/clipboard/clipboard_unix.go

@@ -0,0 +1,105 @@
+// Copyright 2013 @atotto. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd linux netbsd openbsd solaris
+
+package clipboard
+
+import "os/exec"
+
+const (
+	xsel  = "xsel"
+	xclip = "xclip"
+)
+
+var (
+	internalClipboards map[string]string
+)
+
+func init() {
+	if _, err := exec.LookPath(xclip); err == nil {
+		if err := exec.Command("xclip", "-o").Run(); err == nil {
+			return
+		}
+	}
+	if _, err := exec.LookPath(xsel); err == nil {
+		if err := exec.Command("xsel").Run(); err == nil {
+			return
+		}
+	}
+
+	internalClipboards = make(map[string]string)
+	Unsupported = true
+}
+
+func copyCommand(register string) []string {
+	if _, err := exec.LookPath(xclip); err == nil {
+		return []string{xclip, "-in", "-selection", register}
+	}
+
+	if _, err := exec.LookPath(xsel); err == nil {
+		return []string{xsel, "--input", "--" + register}
+	}
+
+	return []string{}
+}
+func pasteCommand(register string) []string {
+	if _, err := exec.LookPath(xclip); err == nil {
+		return []string{xclip, "-out", "-selection", register}
+	}
+
+	if _, err := exec.LookPath(xsel); err == nil {
+		return []string{xsel, "--output", "--" + register}
+	}
+
+	return []string{}
+}
+
+func getPasteCommand(register string) *exec.Cmd {
+	pasteCmdArgs := pasteCommand(register)
+	return exec.Command(pasteCmdArgs[0], pasteCmdArgs[1:]...)
+}
+
+func getCopyCommand(register string) *exec.Cmd {
+	copyCmdArgs := copyCommand(register)
+	return exec.Command(copyCmdArgs[0], copyCmdArgs[1:]...)
+}
+
+func readAll(register string) (string, error) {
+	if Unsupported {
+		if text, ok := internalClipboards[register]; ok {
+			return text, nil
+		}
+		return "", nil
+	}
+	pasteCmd := getPasteCommand(register)
+	out, err := pasteCmd.Output()
+	if err != nil {
+		return "", err
+	}
+	return string(out), nil
+}
+
+func writeAll(text string, register string) error {
+	if Unsupported {
+		internalClipboards[register] = text
+		return nil
+	}
+	copyCmd := getCopyCommand(register)
+	in, err := copyCmd.StdinPipe()
+	if err != nil {
+		return err
+	}
+
+	if err := copyCmd.Start(); err != nil {
+		return err
+	}
+	if _, err := in.Write([]byte(text)); err != nil {
+		return err
+	}
+	if err := in.Close(); err != nil {
+		return err
+	}
+	return copyCmd.Wait()
+}