Struct Buffer

pub struct Buffer { /* private fields */ }

A buffer for text in the line editor.

It keeps track of each action performed on it for use with undo/redo.

Implementations

impl Buffer

pub fn new() -> Self

pub fn clear_actions(&mut self)

pub fn start_undo_group(&mut self)

pub fn end_undo_group(&mut self)

pub fn undo(&mut self) -> bool

pub fn redo(&mut self) -> bool

pub fn revert(&mut self) -> bool

pub fn last_arg(&self) -> Option<&[char]>

pub fn num_chars(&self) -> usize

pub fn num_bytes(&self) -> usize

pub fn char_before(&self, cursor: usize) -> Option<char>

pub fn char_after(&self, cursor: usize) -> Option<char>

pub fn remove(&mut self, start: usize, end: usize) -> usize

Returns the number of characters removed.

pub fn insert(&mut self, start: usize, text: &[char])

pub fn insert_from_buffer(&mut self, other: &Buffer)

pub fn copy_buffer(&mut self, other: &Buffer)

pub fn range(&self, start: usize, end: usize) -> String

pub fn range_chars(&self, start: usize, end: usize) -> Vec<char>

pub fn width(&self) -> Vec<usize>

pub fn range_width(&self, start: usize, end: usize) -> Vec<usize>

pub fn lines(&self) -> Vec<String>

pub fn chars(&self) -> Iter<'_, char>

pub fn truncate(&mut self, num: usize)

pub fn print<W>(&self, out: &mut W) -> Result<()>

where W: Write,

pub fn as_bytes(&self) -> Vec<u8>

pub fn print_rest<W>(&self, out: &mut W, after: usize) -> Result<usize>

where W: Write,

Takes other buffer, measures its length and prints this buffer from the point where the other stopped. Used to implement autosuggestions.

pub fn starts_with(&self, other: &Buffer) -> bool

Check if the other buffer starts with the same content as this one. Used to implement autosuggestions.

pub fn contains(&self, pattern: &Buffer) -> bool

Check if the buffer contains pattern. Used to implement history search.

pub fn is_empty(&self) -> bool

Return true if the buffer is empty.

Trait Implementations

impl Clone for Buffer

fn clone(&self) -> Buffer

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Buffer

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

Formats the value using the given formatter.

impl Default for Buffer

fn default() -> Self

Returns the “default value” for a type.

impl Display for Buffer

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

Formats the value using the given formatter.

impl<'a> From<&'a str> for Buffer

fn from(s: &'a str) -> Self

Converts to this type from the input type.

impl From<Buffer> for String

fn from(buf: Buffer) -> Self

Converts to this type from the input type.

impl From<String> for Buffer

fn from(s: String) -> Self

Converts to this type from the input type.

impl FromIterator<char> for Buffer

fn from_iter<T: IntoIterator<Item = char>>(t: T) -> Self

Creates a value from an iterator.

impl PartialEq for Buffer

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Buffer