mirror of https://github.com/helix-editor/helix
Add system clipboard yank and paste commands
This commit adds six new commands to interact with system clipboard: - clipboard-yank - clipboard-yank-join - clipboard-paste-after - clipboard-paste-before - clipboard-paste-replace - show-clipboard-provider System clipboard provider is detected by checking a few environment variables and executables. Currently only built-in detection is supported. `clipboard-yank` will only yank the "main" selection, which is currently the first one. This will need to be revisited later. Closes https://github.com/helix-editor/helix/issues/76pull/315/head
Benoît CORTIER
4 years ago
committed by
Blaž Hrastnik
parent
d59c9f3baf
commit
a2b8cfca34
@ -0,0 +1,193 @@
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// Implementation reference: https://github.com/neovim/neovim/blob/f2906a4669a2eef6d7bf86a29648793d63c98949/runtime/autoload/provider/clipboard.vim#L68-L152
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use anyhow::Result;
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use std::borrow::Cow;
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pub trait ClipboardProvider: std::fmt::Debug {
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fn name(&self) -> Cow<str>;
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fn get_contents(&self) -> Result<String>;
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fn set_contents(&self, contents: String) -> Result<()>;
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}
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macro_rules! command_provider {
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(paste => $get_prg:literal $( , $get_arg:literal )* ; copy => $set_prg:literal $( , $set_arg:literal )* ; ) => {{
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Box::new(provider::CommandProvider {
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get_cmd: provider::CommandConfig {
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prg: $get_prg,
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args: &[ $( $get_arg ),* ],
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},
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set_cmd: provider::CommandConfig {
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prg: $set_prg,
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args: &[ $( $set_arg ),* ],
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},
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})
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}};
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}
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pub fn get_clipboard_provider() -> Box<dyn ClipboardProvider> {
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// TODO: support for user-defined provider, probably when we have plugin support by setting a
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// variable?
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if exists("pbcopy") && exists("pbpaste") {
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command_provider! {
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paste => "pbpaste";
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copy => "pbcopy";
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}
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} else if env_var_is_set("WAYLAND_DISPLAY") && exists("wl-copy") && exists("wl-paste") {
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command_provider! {
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paste => "wl-paste", "--no-newline";
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copy => "wl-copy", "--foreground", "--type", "text/plain";
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}
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} else if env_var_is_set("DISPLAY") && exists("xclip") {
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command_provider! {
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paste => "xclip", "-o", "-selection", "clipboard";
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copy => "xclip", "-i", "-selection", "clipboard";
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}
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} else if env_var_is_set("DISPLAY") && exists("xsel") && is_exit_success("xsel", &["-o", "-b"])
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{
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// FIXME: check performance of is_exit_success
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command_provider! {
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paste => "xsel", "-o", "-b";
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copy => "xsel", "--nodetach", "-i", "-b";
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}
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} else if exists("lemonade") {
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command_provider! {
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paste => "lemonade", "paste";
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copy => "lemonade", "copy";
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}
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} else if exists("doitclient") {
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command_provider! {
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paste => "doitclient", "wclip", "-r";
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copy => "doitclient", "wclip";
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}
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} else if exists("win32yank.exe") {
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// FIXME: does it work within WSL?
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command_provider! {
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paste => "win32yank.exe", "-o", "--lf";
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copy => "win32yank.exe", "-i", "--crlf";
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}
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} else if exists("termux-clipboard-set") && exists("termux-clipboard-get") {
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command_provider! {
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paste => "termux-clipboard-get";
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copy => "termux-clipboard-set";
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}
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} else if env_var_is_set("TMUX") && exists("tmux") {
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command_provider! {
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paste => "tmux", "save-buffer", "-";
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copy => "tmux", "load-buffer", "-";
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}
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} else {
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Box::new(provider::NopProvider)
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}
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}
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fn exists(executable_name: &str) -> bool {
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which::which(executable_name).is_ok()
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}
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fn env_var_is_set(env_var_name: &str) -> bool {
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std::env::var_os(env_var_name).is_some()
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}
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fn is_exit_success(program: &str, args: &[&str]) -> bool {
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std::process::Command::new(program)
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.args(args)
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.output()
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.ok()
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.and_then(|out| out.status.success().then(|| ())) // TODO: use then_some when stabilized
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.is_some()
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}
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mod provider {
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use super::ClipboardProvider;
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use anyhow::{bail, Context as _, Result};
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use std::borrow::Cow;
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#[derive(Debug)]
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pub struct NopProvider;
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impl ClipboardProvider for NopProvider {
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fn name(&self) -> Cow<str> {
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Cow::Borrowed("none")
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}
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fn get_contents(&self) -> Result<String> {
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Ok(String::new())
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}
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fn set_contents(&self, _: String) -> Result<()> {
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Ok(())
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}
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}
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#[derive(Debug)]
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pub struct CommandConfig {
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pub prg: &'static str,
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pub args: &'static [&'static str],
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}
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impl CommandConfig {
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fn execute(&self, input: Option<&str>, pipe_output: bool) -> Result<Option<String>> {
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use std::io::Write;
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use std::process::{Command, Stdio};
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let stdin = input.map(|_| Stdio::piped()).unwrap_or_else(Stdio::null);
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let stdout = pipe_output.then(Stdio::piped).unwrap_or_else(Stdio::null);
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let mut child = Command::new(self.prg)
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.args(self.args)
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.stdin(stdin)
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.stdout(stdout)
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.stderr(Stdio::null())
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.spawn()?;
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if let Some(input) = input {
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let mut stdin = child.stdin.take().context("stdin is missing")?;
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stdin
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.write_all(input.as_bytes())
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.context("couldn't write in stdin")?;
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}
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// TODO: add timer?
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let output = child.wait_with_output()?;
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if !output.status.success() {
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bail!("clipboard provider {} failed", self.prg);
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}
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if pipe_output {
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Ok(Some(String::from_utf8(output.stdout)?))
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} else {
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Ok(None)
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}
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}
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}
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#[derive(Debug)]
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pub struct CommandProvider {
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pub get_cmd: CommandConfig,
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pub set_cmd: CommandConfig,
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}
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impl ClipboardProvider for CommandProvider {
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fn name(&self) -> Cow<str> {
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if self.get_cmd.prg != self.set_cmd.prg {
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Cow::Owned(format!("{}+{}", self.get_cmd.prg, self.set_cmd.prg))
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} else {
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Cow::Borrowed(self.get_cmd.prg)
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}
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}
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fn get_contents(&self) -> Result<String> {
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let output = self
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.get_cmd
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.execute(None, true)?
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.context("output is missing")?;
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Ok(output)
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}
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fn set_contents(&self, value: String) -> Result<()> {
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self.set_cmd.execute(Some(&value), false).map(|_| ())
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}
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}
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}
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