mirror of
https://seed.radicle.dev/rad:z6cFWeWpnZNHh9rUW8phgA3b5yGt.git
synced 2026-10-30 16:30:49 +08:00
Han Xu
eb1653cdb7
Initially, radicle-source was envisioned to be another layer on top of radicle-surf, however, it ended up duplicating a lot of concepts. We consolidate them by merging radicle-source into radicle-surf. This meant removing modules branch.rs, tag.rs, oid.rs and error.rs.
88 lines
3.4 KiB
Rust
88 lines
3.4 KiB
Rust
// This file is part of radicle-surf
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// <https://github.com/radicle-dev/radicle-surf>
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//
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// Copyright (C) 2019-2020 The Radicle Team <dev@radicle.xyz>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 3 or
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// later as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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use std::path;
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use syntect::{
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easy::HighlightLines,
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highlighting::ThemeSet,
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parsing::SyntaxSet,
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util::LinesWithEndings,
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};
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lazy_static::lazy_static! {
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// The syntax set is slow to load (~30ms), so we make sure to only load it once.
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// It _will_ affect the latency of the first request that uses syntax highlighting,
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// but this is acceptable for now.
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pub static ref SYNTAX_SET: SyntaxSet = {
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let default_set = SyntaxSet::load_defaults_newlines();
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let mut builder = default_set.into_builder();
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if cfg!(debug_assertions) {
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// In development assets are relative to the proxy source.
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// Don't crash if we aren't able to load additional syntaxes for some reason.
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builder.add_from_folder("./assets", true).ok();
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} else {
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// In production assets are relative to the proxy executable.
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let exe_path = std::env::current_exe().expect("Can't get current exe path");
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let root_path = exe_path
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.parent()
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.expect("Could not get parent path of current executable");
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let mut tmp = root_path.to_path_buf();
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tmp.push("assets");
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let asset_path = tmp.to_str().expect("Couldn't convert pathbuf to str");
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// Don't crash if we aren't able to load additional syntaxes for some reason.
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match builder.add_from_folder(asset_path, true) {
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Ok(_) => (),
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Err(err) => log::warn!("Syntax builder error : {}", err),
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};
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}
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builder.build()
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};
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}
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/// Return a [`BlobContent`] given a file path, content and theme. Attempts to
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/// perform syntax highlighting when the theme is `Some`.
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pub fn highlight(path: &str, content: &str, theme_name: &str) -> Option<String> {
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let syntax = path::Path::new(path)
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.extension()
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.and_then(std::ffi::OsStr::to_str)
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.and_then(|ext| SYNTAX_SET.find_syntax_by_extension(ext));
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let ts = ThemeSet::load_defaults();
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let theme = ts.themes.get(theme_name);
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match (syntax, theme) {
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(Some(syntax), Some(theme)) => {
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let mut highlighter = HighlightLines::new(syntax, theme);
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let mut html = String::with_capacity(content.len());
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for line in LinesWithEndings::from(content) {
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let regions = highlighter.highlight(line, &SYNTAX_SET);
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syntect::html::append_highlighted_html_for_styled_line(
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®ions[..],
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syntect::html::IncludeBackground::No,
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&mut html,
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);
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}
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Some(html)
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},
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_ => None,
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}
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}
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