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use super::combinators::{self, Parameter};
use crate::completion::factory;
use crate::range::RangeExt;
use crate::syntax::*;
use crate::workspace::*;
use futures_boxed::boxed;
use lsp_types::{CompletionItem, CompletionParams, Range, TextEdit};
use std::path::{Path, PathBuf};
use walkdir::WalkDir;
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
pub struct LatexIncludeCompletionProvider;
impl FeatureProvider for LatexIncludeCompletionProvider {
type Params = CompletionParams;
type Output = Vec<CompletionItem>;
#[boxed]
async fn execute<'a>(&'a self, request: &'a FeatureRequest<Self::Params>) -> Self::Output {
let parameters = LANGUAGE_DATA
.include_commands
.iter()
.map(|cmd| Parameter::new(&cmd.name, cmd.index));
combinators::argument_word(request, parameters, |command, index| {
async move {
if !request.document().is_file() {
return Vec::new();
}
let position = request.params.text_document_position.position;
let mut items = Vec::new();
let path_word = command.extract_word(index);
let name_range = match path_word {
Some(path_word) => Range::new_simple(
path_word.start().line,
path_word.end().character
- path_word.text().split('/').last().unwrap().chars().count() as u64,
path_word.end().line,
path_word.end().character,
),
None => Range::new(position, position),
};
let directory = current_directory(&request, &command);
for entry in WalkDir::new(directory)
.min_depth(1)
.max_depth(1)
.follow_links(false)
.into_iter()
.filter_map(std::result::Result::ok)
{
if entry.file_type().is_file() && is_included(&command, &entry.path()) {
let mut path = entry.into_path();
let include_extension = LANGUAGE_DATA
.include_commands
.iter()
.find(|cmd| command.name.text() == cmd.name)
.unwrap()
.include_extension;
if !include_extension {
remove_extension(&mut path);
}
let text_edit = make_text_edit(name_range, &path);
items.push(factory::file(request, &path, text_edit));
} else if entry.file_type().is_dir() {
let path = entry.into_path();
let text_edit = make_text_edit(name_range, &path);
items.push(factory::folder(request, &path, text_edit));
}
}
items
}
})
.await
}
}
fn current_directory(
request: &FeatureRequest<CompletionParams>,
command: &LatexCommand,
) -> PathBuf {
let mut path = request.document().uri.to_file_path().unwrap();
path = PathBuf::from(path.to_string_lossy().into_owned().replace('\\', "/"));
path.pop();
if let Some(include) = command.extract_word(0) {
path.push(include.text());
if !include.text().ends_with('/') {
path.pop();
}
}
path
}
fn is_included(command: &LatexCommand, file: &Path) -> bool {
if let Some(allowed_extensions) = LANGUAGE_DATA
.include_commands
.iter()
.find(|cmd| command.name.text() == cmd.name)
.unwrap()
.kind
.extensions()
{
file.extension()
.map(|extension| extension.to_string_lossy().to_lowercase())
.map(|extension| allowed_extensions.contains(&extension.as_str()))
.unwrap_or(false)
} else {
true
}
}
fn remove_extension(path: &mut PathBuf) {
let stem = path
.file_stem()
.map(|stem| stem.to_string_lossy().into_owned());
if let Some(stem) = stem {
path.pop();
path.push(PathBuf::from(stem));
}
}
fn make_text_edit(range: Range, path: &Path) -> TextEdit {
let text = path.file_name().unwrap().to_string_lossy().into_owned();
TextEdit::new(range, text)
}
|