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Add the '%' (current filename) register

Browse Source 
This register also comes from Kakoune. It's read-only and produces the
current document's name, defaulting to the scratch buffer name
constant.

(Also see PR5577.)

Co-authored-by: Ivan Tham <pickfire@riseup.net>
This commit is contained in:
Michael Davis 2023-07-10 17:04:14 -05:00 committed by Blaž Hrastnik
parent da2afe7353
commit 32d071a392
1 changed files with 17 additions and 4 deletions
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21
helix-view/src/register.rs
View File

@ -2,7 +2,7 @@
use anyhow::Result;
use crate::Editor;
use crate::{document::SCRATCH_BUFFER_NAME, Editor};
/// A key-value store for saving sets of values.
///
@ -13,6 +13,7 @@
/// * Black hole (`_`): all values read and written are discarded
/// * Selection indices (`#`): index number of each selection starting at 1
/// * Selection contents (`.`)
/// * Document path (`%`): filename of the current buffer
#[derive(Debug, Default)]
pub struct Registers {
inner: HashMap<char, Vec<String>>,
@ -36,6 +37,17 @@ pub fn read<'a>(&'a self, name: char, editor: &'a Editor) -> Option<RegisterValu
let text = doc.text().slice(..);
Some(RegisterValues::new(doc.selection(view.id).fragments(text)))
}
'%' => {
let doc = doc!(editor);
let path = doc
.path()
.as_ref()
.map(|p| p.to_string_lossy())
.unwrap_or_else(|| SCRATCH_BUFFER_NAME.into());
Some(RegisterValues::new(iter::once(path)))
}
_ => self
.inner
.get(&name)
@ -46,7 +58,7 @@ pub fn read<'a>(&'a self, name: char, editor: &'a Editor) -> Option<RegisterValu
pub fn write(&mut self, name: char, values: Vec<String>) -> Result<()> {
match name {
'_' => Ok(()),
'#' | '.' => Err(anyhow::anyhow!("Register {name} does not support writing")),
'#' | '.' | '%' => Err(anyhow::anyhow!("Register {name} does not support writing")),
_ => {
self.inner.insert(name, values);
Ok(())
@ -57,7 +69,7 @@ pub fn write(&mut self, name: char, values: Vec<String>) -> Result<()> {
pub fn push(&mut self, name: char, value: String) -> Result<()> {
match name {
'_' => Ok(()),
'#' | '.' => Err(anyhow::anyhow!("Register {name} does not support pushing")),
'#' | '.' | '%' => Err(anyhow::anyhow!("Register {name} does not support pushing")),
_ => {
self.inner.entry(name).or_insert_with(Vec::new).push(value);
Ok(())
@ -89,6 +101,7 @@ pub fn iter_preview(&self) -> impl Iterator<Item = (char, &str)> {
('_', "<empty>"),
('#', "<selection indices>"),
('.', "<selection contents>"),
('%', "<document path>"),
]
.iter()
.copied(),
@ -101,7 +114,7 @@ pub fn clear(&mut self) {
pub fn remove(&mut self, name: char) -> bool {
match name {
'_' | '#' | '.' => false,
'_' | '#' | '.' | '%' => false,
_ => self.inner.remove(&name).is_some(),
}
}