Struct datafusion_rustyline::Editor

pub struct Editor<H: Helper> { /* fields omitted */ }

Line editor

Methods

impl<H: Helper> Editor<H>

pub fn new() -> Editor<H>

Create an editor with the default configuration

pub fn with_config(config: Config) -> Editor<H>

Create an editor with a specific configuration.

pub fn readline(&mut self, prompt: &str) -> Result<String>

This method will read a line from STDIN and will display a prompt.

It uses terminal-style interaction if stdin is connected to a terminal. Otherwise (e.g., if stdin is a pipe or the terminal is not supported), it uses file-style interaction.

pub fn readline_with_initial(     &mut self,     prompt: &str,     initial: (&str, &str) ) -> Result<String>

This function behaves in the exact same manner as readline, except that it pre-populates the input area.

The text that resides in the input area is given as a 2-tuple. The string on the left of the tuple is what will appear to the left of the cursor and the string on the right is what will appear to the right of the cursor.

pub fn load_history<P: AsRef<Path> + ?Sized>(&mut self, path: &P) -> Result<()>

Load the history from the specified file.

pub fn save_history<P: AsRef<Path> + ?Sized>(&self, path: &P) -> Result<()>

Save the history in the specified file.

pub fn add_history_entry<S: AsRef<str> + Into<String>>(     &mut self,     line: S ) -> bool

Add a new entry in the history.

pub fn clear_history(&mut self)

Clear history.

pub fn get_history(&mut self) -> &mut History

Return a mutable reference to the history object.

pub fn get_history_const(&self) -> &History

Return an immutable reference to the history object.

pub fn set_helper(&mut self, helper: Option<H>)

Register a callback function to be called for tab-completion or to show hints to the user at the right of the prompt.

pub fn set_completer(&mut self, completer: Option<H>)

Deprecating in 2.0.0

: Use set_helper instead

pub fn bind_sequence(&mut self, key_seq: KeyPress, cmd: Cmd) -> Option<Cmd>

Bind a sequence to a command.

pub fn unbind_sequence(&mut self, key_seq: KeyPress) -> Option<Cmd>

Remove a binding for the given sequence.

Important traits for Iter<'a, H>

impl<'a, H: Helper> Iterator for Iter<'a, H> type Item = Result<String>;

pub fn iter<'a>(&'a mut self, prompt: &'a str) -> Iter<H>

let mut rl = rustyline::Editor::<()>::new();
for readline in rl.iter("> ") {
    match readline {
        Ok(line) => {
            println!("Line: {}", line);
        }
        Err(err) => {
            println!("Error: {:?}", err);
            break;
        }
    }
}

Trait Implementations

impl<H: Helper> Debug for Editor<H>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.