search: Barebones implementation.

pull/8/head
Blaž Hrastnik 4 years ago
parent 6dba0516f2
commit 83d48f10ea

@ -351,6 +351,69 @@ pub fn split_selection_on_newline(cx: &mut Context) {
doc.set_selection(selection);
}
// search: searches for the first occurence in file, provides a prompt
// search_next: reuses the last search regex and searches for the next match. The next match becomes the main selection.
// -> we always search from after the cursor.head
// TODO: be able to use selection as search query (*/alt *)
// I'd probably collect all the matches right now and store the current index. The cache needs
// wiping if input happens.
fn _search(doc: &mut Document, contents: &str, regex: &Regex) {
let text = doc.text();
let start = doc.selection().cursor();
// TODO: use find_at to find the next match after the cursor, loop around the end
if let Some(mat) = regex.find_at(&contents, start) {
let start = text.byte_to_char(mat.start());
let end = text.byte_to_char(mat.end());
let selection = Selection::single(start, end - 1);
// TODO: (first_match, regex) stuff in register?
doc.set_selection(selection);
};
}
// TODO: use one function for search vs extend
pub fn search(cx: &mut Context) {
let doc = cx.doc();
// TODO: could probably share with select_on_matches?
// HAXX: sadly we can't avoid allocating a single string for the whole buffer since we can't
// feed chunks into the regex yet
let contents = doc.text().slice(..).to_string();
let prompt = ui::regex_prompt(cx, "search:".to_string(), move |doc, regex| {
let text = doc.text();
let start = doc.selection().cursor();
_search(doc, &contents, &regex);
// TODO: only store on enter (accept), not update
register::set('\\', vec![regex.as_str().to_string()]);
});
cx.callback = Some(Box::new(
move |compositor: &mut Compositor, editor: &mut Editor| {
compositor.push(Box::new(prompt));
},
));
}
pub fn search_next(cx: &mut Context) {
if let Some(query) = register::get('\\') {
let query = query.first().unwrap();
let doc = cx.doc();
let contents = doc.text().slice(..).to_string();
let regex = Regex::new(&query).unwrap();
_search(doc, &contents, &regex);
}
}
// TODO: N -> search_prev
// need to loop around buffer also and show a message
// same for no matches
//
pub fn select_line(cx: &mut Context) {
// TODO: count
let pos = cx.doc().selection().primary();

@ -168,6 +168,8 @@ pub fn default() -> Keymaps {
vec![alt!(';')] => commands::flip_selections,
vec![key!('%')] => commands::select_all,
vec![key!('x')] => commands::select_line,
vec![key!('/')] => commands::search,
vec![key!('n')] => commands::search_next,
vec![key!('u')] => commands::undo,
vec![shift!('U')] => commands::redo,
vec![key!('y')] => commands::yank,

@ -43,12 +43,15 @@ pub fn regex_prompt(
PromptEvent::Update => {
match Regex::new(input) {
Ok(regex) => {
let doc = &mut editor.view_mut().doc;
let view = &mut editor.view_mut();
let doc = &mut view.doc;
// revert state to what it was before the last update
doc.state = snapshot.clone();
fun(doc, regex);
view.ensure_cursor_in_view();
}
Err(_err) => (), // TODO: mark command line as error
}

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