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neko-custom/server/internal/hid/clipboard/clipboard.go
2020-01-25 14:29:52 +00:00

125 lines
2.5 KiB
Go

package clipboard
import (
"errors"
"os"
"os/exec"
)
const (
xsel = "xsel"
xclip = "xclip"
wlcopy = "wl-copy"
wlpaste = "wl-paste"
termuxClipboardGet = "termux-clipboard-get"
termuxClipboardSet = "termux-clipboard-set"
)
var (
Unsupported bool
Primary bool
pasteCmdArgs []string
copyCmdArgs []string
xselPasteArgs = []string{xsel, "--output", "--clipboard"}
xselCopyArgs = []string{xsel, "--input", "--clipboard"}
xclipPasteArgs = []string{xclip, "-out", "-selection", "clipboard"}
xclipCopyArgs = []string{xclip, "-in", "-selection", "clipboard"}
wlpasteArgs = []string{wlpaste, "--no-newline"}
wlcopyArgs = []string{wlcopy}
termuxPasteArgs = []string{termuxClipboardGet}
termuxCopyArgs = []string{termuxClipboardSet}
missingCommands = errors.New("No clipboard utilities available. Please install xsel, xclip, wl-clipboard or Termux:API add-on for termux-clipboard-get/set.")
)
func init() {
if os.Getenv("WAYLAND_DISPLAY") != "" {
pasteCmdArgs = wlpasteArgs
copyCmdArgs = wlcopyArgs
if _, err := exec.LookPath(wlcopy); err == nil {
if _, err := exec.LookPath(wlpaste); err == nil {
return
}
}
}
pasteCmdArgs = xclipPasteArgs
copyCmdArgs = xclipCopyArgs
if _, err := exec.LookPath(xclip); err == nil {
return
}
pasteCmdArgs = xselPasteArgs
copyCmdArgs = xselCopyArgs
if _, err := exec.LookPath(xsel); err == nil {
return
}
pasteCmdArgs = termuxPasteArgs
copyCmdArgs = termuxCopyArgs
if _, err := exec.LookPath(termuxClipboardSet); err == nil {
if _, err := exec.LookPath(termuxClipboardGet); err == nil {
return
}
}
Unsupported = true
}
func getPasteCommand() *exec.Cmd {
if Primary {
pasteCmdArgs = pasteCmdArgs[:1]
}
return exec.Command(pasteCmdArgs[0], pasteCmdArgs[1:]...)
}
func getCopyCommand() *exec.Cmd {
if Primary {
copyCmdArgs = copyCmdArgs[:1]
}
return exec.Command(copyCmdArgs[0], copyCmdArgs[1:]...)
}
func ReadAll() (string, error) {
if Unsupported {
return "", missingCommands
}
pasteCmd := getPasteCommand()
out, err := pasteCmd.Output()
if err != nil {
return "", err
}
return string(out), nil
}
func WriteAll(text string) error {
if Unsupported {
return missingCommands
}
copyCmd := getCopyCommand()
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()
}