ci(docker): add Dockerfile

.dockerignore

@@ -0,0 +1,8 @@
+target/
+.git/
+.gitignore
+Dockerfile
+.dockerignore
+README.md
+.env
+*.md

CHANGELOG.md

@@ -0,0 +1,107 @@
+# MDPreview Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a
+Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to
+[Semantic Versioning](https://semver.org/lang/en/).
+
+
+## v0.4.4 - 2026-03-29
+### Fixed
+- Fixed removing newlines.
+
+
+---
+
+
+## v0.4.3 - 2026-03-28
+### Changed
+- Change footer.
+
+
+
+---
+
+## v0.4.2 - 2026-03-27
+### Added
+- Added version and project name in footer.
+
+
+---
+
+## v0.4.1 - 2026-03-26
+### Fixed
+- Added support for rendering individual files, not just directories (e.g.,
+  `mdpreview dir/file.md`).
+- Fixed the rendering of Markdown lists.
+
+
+---
+
+
+## v0.4.0 - 2026-03-25
+### Added
+- Added a button to copy the edit command (`note edit current_note.md`).
+
+
+---
+
+
+## v0.3.0 - 2026-03-24
+### Added
+- Added the `--random` flag to open the browser on a random page when used with
+  `--browser` (`--browser --random`).
+
+
+---
+
+
+## v0.2.1 - 2026-03-23
+### Fixed
+- Fixed an issue where listening on port 0 (`--port 0`) caused the browser to
+  open the wrong port.
+
+
+---
+
+
+## v0.2.0 - 2026-03-23
+### Added
+- Added the `--browser` flag to automatically open the page in the browser.
+
+
+---
+
+
+## v0.1.3 - 2026-03-23
+### Added
+- Added a "Random File" button to the header.
+
+
+### Fixed
+- Non-Markdown files now render correctly.
+
+
+### Changed
+- Translated the interface from Russian to English.
+
+
+---
+
+
+## v0.1.2 - 2026-03-22
+### Added
+- Added a "Random File" button.
+- Added an "On Main" button.
+
+
+### Changed
+- Changed the default port to 8080.
+
+
+---
+
+
+## v0.1.1 - 2026-03-21
+### Added
+- Added page titles.

Cargo.lock

@@ -982,7 +982,7 @@ checksum = "0e7465ac9959cc2b1404e8e2367b43684a6d13790fe23056cc8c6c5a6b7bcb94"
 
 [[package]]
 name = "mdpreview"
-version = "0.4.0"
+version = "0.4.4"
 dependencies = [
  "askama",
  "askama_axum",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mdpreview"
-version = "0.4.0"
+version = "0.4.4"
 edition = "2024"
 authors = ["Vladislav Kan <thek4n@yandex.ru>"]
 

Dockerfile

@@ -0,0 +1,43 @@
+FROM rust:1.94 AS chef
+
+RUN cargo install --locked cargo-chef
+WORKDIR /app
+
+COPY Cargo.toml Cargo.lock .
+RUN mkdir src && touch src/main.rs
+
+RUN cargo chef prepare --recipe-path recipe.json
+
+
+
+FROM chef AS builder
+
+COPY --from=chef /app/recipe.json recipe.json
+
+RUN cargo chef cook --release --recipe-path recipe.json
+
+
+COPY rust-toolchain.toml rust-toolchain.toml
+
+RUN cargo fetch
+
+
+COPY . .
+
+RUN cargo build --release
+
+
+
+FROM debian:bookworm-slim AS runtime
+
+RUN useradd -m -s /bin/bash appuser
+
+WORKDIR /app
+
+COPY --from=builder /app/target/release/mdpreview /usr/local/bin/mdpreview
+
+USER appuser
+
+EXPOSE 8080
+
+CMD ["mdpreview"]

TODO.md

@@ -1,4 +1,4 @@
 # TODO <!-- [NOGREP] -->
 
-* [ ] Сделать кнопку скопировать путь
-* [ ] Сделать кнопку скопировать путь вместе с командой (`note edit ...`)
+* [X] Сделать кнопку скопировать путь
+* [X] Сделать кнопку скопировать путь вместе с командой (`note edit ...`)

rust-toolchain.toml

@@ -0,0 +1,3 @@
+[toolchain]
+channel = "stable"
+components = ["clippy", "rustfmt"]

src/main.rs

@@ -2,7 +2,10 @@ use askama::Template;
 use axum::{
     Router,
     extract::{Path as AxumPath, State},
-    http::{HeaderMap, StatusCode, header},
+    http::{
+        HeaderMap, StatusCode,
+        header::{self},
+    },
     response::{IntoResponse, Redirect, Sse},
     routing::get,
 };
@@ -47,6 +50,9 @@ pub struct FileEntry {
 pub struct DirectoryTemplate {
     pub title_path: String,
     pub files: Vec<FileEntry>,
+    pub package_name: String,
+    pub authors: String,
+    pub version: String,
 }
 
 #[derive(Template)]
@@ -57,8 +63,15 @@ pub struct NoteTemplate {
     pub content: String,
     pub sse_url: String,
     pub copy_path: String,
+    pub package_name: String,
+    pub authors: String,
+    pub version: String,
 }
 
+const PACKAGE_NAME: &str = env!("CARGO_PKG_NAME");
+const AUTHORS: &str = env!("CARGO_PKG_AUTHORS");
+const VERSION: &str = env!("CARGO_PKG_VERSION");
+
 #[derive(clap::Parser, Debug)]
 #[command(author, version, about, long_about = None)]
 struct Args {
@@ -74,11 +87,11 @@ struct Args {
     #[arg(long, default_value_t = false)]
     browser: bool,
 
-    /// Open browser on random note. Requires flag --broswer
+    /// Open browser on random note. Requires flag --browser
     #[arg(long, default_value_t = false, requires = "browser")]
     random: bool,
 
-    /// Notes root
+    /// Notes root (can be a directory or a single file)
     #[arg()]
     root: PathBuf,
 }
@@ -89,17 +102,20 @@ struct AppState {
     theme_set: Arc<ThemeSet>,
     tx: Arc<broadcast::Sender<String>>,
     root: PathBuf,
+    is_root_file: bool,
 }
 
 #[tokio::main]
 async fn main() {
     let args = Args::parse();
 
-    if !args.root.is_dir() {
-        eprintln!("Root {} is not a directory", args.root.display());
+    if !args.root.exists() {
+        eprintln!("Root path {} does not exist", args.root.display());
         std::process::exit(1);
     }
 
+    let is_root_file = args.root.is_file();
+
     tracing_subscriber::registry()
         .with(tracing_subscriber::EnvFilter::new(
             std::env::var("RUST_LOG").unwrap_or_else(|_| "info,tower_http=warn".into()),
@@ -117,6 +133,7 @@ async fn main() {
         theme_set: Arc::new(ts),
         tx: Arc::new(tx),
         root: args.root.clone(),
+        is_root_file,
     };
 
     let watcher_state = state.clone();
@@ -129,7 +146,7 @@ async fn main() {
         .route("/random", get(random_file))
         .route("/*path", get(serve_file))
         .route("/events/*path", get(sse_handler))
-        .with_state(state)
+        .with_state(state.clone())
         .layer(TraceLayer::new_for_http());
 
     let addr = resolve_addr(&args.host, args.port).expect("Failed to resolve address");
@@ -137,12 +154,14 @@ async fn main() {
     let listener = tokio::net::TcpListener::bind(addr).await.unwrap();
 
     let actual_addr = listener.local_addr().expect("Failed to get local address");
-    println!("Server started on http://{actual_addr}");
+    println!("mdpreview v{VERSION} server started on http://{actual_addr}");
 
     if args.browser {
         let mut url = format!("http://{actual_addr}");
         if args.random {
-            url = format!("{url}/random")
+            if !state.is_root_file {
+                url = format!("{url}/random")
+            }
         }
         let _ = webbrowser::open(url.as_str());
     }
@@ -159,16 +178,87 @@ fn resolve_addr(host: &str, port: u16) -> io::Result<SocketAddr> {
 }
 
 async fn root_handler(State(state): State<AppState>) -> impl IntoResponse {
-    match render_directory_index(&state.root, "").await {
-        Ok(template) => template.into_response(),
-        Err(e) => e.into_response(),
+    if state.is_root_file {
+        match render_single_file(&state.root, &state).await {
+            Ok(template) => template.into_response(),
+            Err(e) => e.into_response(),
+        }
+    } else {
+        match render_directory_index(&state.root, "").await {
+            Ok(template) => template.into_response(),
+            Err(e) => e.into_response(),
+        }
     }
 }
 
+async fn render_single_file(
+    file_path: &StdPath,
+    state: &AppState,
+) -> Result<NoteTemplate, StatusCode> {
+    let metadata = match fs::metadata(file_path).await {
+        Ok(m) => m,
+        Err(_) => return Err(StatusCode::NOT_FOUND),
+    };
+
+    if metadata.is_dir() {
+        return Err(StatusCode::BAD_REQUEST);
+    }
+
+    let extension = file_path
+        .extension()
+        .and_then(|ext| ext.to_str())
+        .unwrap_or("")
+        .to_lowercase();
+
+    let content = match fs::read_to_string(file_path).await {
+        Ok(c) => c,
+        Err(_) => return Err(StatusCode::INTERNAL_SERVER_ERROR),
+    };
+
+    let display_path = "";
+
+    let html_content = if extension == "md" {
+        markdown_to_html(&content, &state.syntax_set, &state.theme_set, display_path)
+    } else {
+        code_to_html(
+            &content,
+            extension.as_str(),
+            &state.syntax_set,
+            &state.theme_set,
+        )
+    };
+
+    let filename = file_path
+        .file_name()
+        .and_then(OsStr::to_str)
+        .unwrap_or("Unknown")
+        .to_string();
+
+    let back_link = "/".to_string();
+
+    let sse_url = "/events/".to_string();
+    let copy_path = format!("note fe {filename}").to_string();
+
+    Ok(NoteTemplate {
+        filename,
+        back_link,
+        content: html_content,
+        sse_url,
+        copy_path,
+        package_name: PACKAGE_NAME.to_string(),
+        authors: AUTHORS.to_string(),
+        version: VERSION.to_string(),
+    })
+}
+
 async fn serve_file(
     State(state): State<AppState>,
     AxumPath(full_path): AxumPath<String>,
 ) -> impl IntoResponse {
+    if state.is_root_file {
+        return Err(StatusCode::NOT_FOUND);
+    }
+
     if full_path.is_empty() {
         return Err(StatusCode::NOT_FOUND);
     }
@@ -264,6 +354,9 @@ async fn serve_file(
         content: html_content,
         sse_url,
         copy_path,
+        package_name: PACKAGE_NAME.to_string(),
+        authors: AUTHORS.to_string(),
+        version: VERSION.to_string(),
     };
 
     Ok(template.into_response())
@@ -314,7 +407,17 @@ async fn render_directory_index(
 
     let title_path = request_path.trim_start_matches('/').to_string();
 
-    Ok(DirectoryTemplate { title_path, files })
+    let package_name = env!("CARGO_PKG_NAME").to_string();
+    let authors = env!("CARGO_PKG_AUTHORS").to_string();
+    let version = env!("CARGO_PKG_VERSION").to_string();
+
+    Ok(DirectoryTemplate {
+        title_path,
+        files,
+        package_name,
+        authors,
+        version,
+    })
 }
 
 async fn sse_handler(
@@ -337,13 +440,23 @@ async fn sse_handler(
 
     let rx = state.tx.subscribe();
     let requested_path = full_path.clone();
+    let root_path_str = state.root.to_string_lossy().to_string();
 
     let stream = BroadcastStream::new(rx).filter_map(move |res| {
         let req_path = requested_path.clone();
+        let root_str = root_path_str.clone();
+        let is_root_file_mode = state.is_root_file;
+
         async move {
             match res {
                 Ok(changed_path) => {
-                    if changed_path.contains(&req_path) || changed_path.ends_with(&req_path) {
+                    let should_notify = if is_root_file_mode {
+                        changed_path == root_str || changed_path.ends_with(&root_str)
+                    } else {
+                        changed_path.contains(&req_path) || changed_path.ends_with(&req_path)
+                    };
+
+                    if should_notify {
                         Some(Ok::<axum::response::sse::Event, Infallible>(
                             axum::response::sse::Event::default()
                                 .event("reload")
@@ -368,6 +481,10 @@ async fn sse_handler(
 }
 
 async fn random_file(State(state): State<AppState>) -> impl IntoResponse {
+    if state.is_root_file {
+        return Ok(Redirect::temporary("/"));
+    }
+
     let mut files: Vec<PathBuf> = Vec::new();
     let mut stack = vec![state.root.clone()];
 
@@ -427,7 +544,13 @@ async fn run_file_watcher(state: AppState) {
     )
     .expect("Failed to create watcher");
 
-    if let Err(e) = watcher.watch(&state.root, RecursiveMode::Recursive) {
+    let watch_result = if state.is_root_file {
+        watcher.watch(&state.root, RecursiveMode::NonRecursive)
+    } else {
+        watcher.watch(&state.root, RecursiveMode::Recursive)
+    };
+
+    if let Err(e) = watch_result {
         eprintln!("Failed set watcher: {e}");
         return;
     }

src/markdown.rs

@@ -4,8 +4,64 @@ use syntect::highlighting::ThemeSet;
 use syntect::html::{IncludeBackground, styled_line_to_highlighted_html};
 use syntect::parsing::SyntaxSet;
 
+fn normalize_lists(input: &str) -> String {
+    let mut result = String::with_capacity(input.len() + input.len() / 10);
+
+    for line in input.lines() {
+        if let Some(first_non_ws) = line.find(|c: char| !c.is_whitespace()) {
+            let marker_char = line.chars().nth(first_non_ws);
+
+            if let Some(marker) = marker_char {
+                if marker == '*' || marker == '-' || marker == '+' {
+                    let rest_start = first_non_ws + 1;
+
+                    if rest_start < line.len() {
+                        let next_char = line.chars().nth(rest_start).unwrap();
+
+                        if !next_char.is_whitespace() {
+                            let mut marker_count = 1;
+                            let mut is_only_markers = true;
+
+                            for c in line.chars().skip(rest_start) {
+                                if c == marker {
+                                    marker_count += 1;
+                                } else if !c.is_whitespace() {
+                                    is_only_markers = false;
+                                    break;
+                                }
+                            }
+
+                            if !(is_only_markers && marker_count >= 2) {
+                                result.push_str(&line[..rest_start]);
+                                result.push(' ');
+                                result.push_str(&line[rest_start..]);
+                                result.push('\n');
+                                continue;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        result.push_str(line);
+        result.push('\n');
+    }
+
+    if result.ends_with('\n') && !input.ends_with('\n') {
+        result.pop();
+    }
+
+    result
+}
+
 pub fn markdown_to_html(markdown: &str, ss: &SyntaxSet, ts: &ThemeSet, _file_path: &str) -> String {
-    let theme = &ts.themes["base16-ocean.dark"];
+    let normalized_markdown = normalize_lists(markdown);
+
+    let theme = ts
+        .themes
+        .get("base16-ocean.dark")
+        .unwrap_or_else(|| ts.themes.values().next().expect("No themes available"));
 
     let mut options = Options::empty();
     options.insert(Options::ENABLE_TABLES);
@@ -14,7 +70,7 @@ pub fn markdown_to_html(markdown: &str, ss: &SyntaxSet, ts: &ThemeSet, _file_pat
     options.insert(Options::ENABLE_TASKLISTS);
     options.insert(Options::ENABLE_SMART_PUNCTUATION);
 
-    let parser = pulldown_cmark::Parser::new_ext(markdown, options);
+    let parser = pulldown_cmark::Parser::new_ext(&normalized_markdown, options);
 
     let mut processed_events: Vec<Event> = Vec::new();
     let mut in_code_block = false;
@@ -23,6 +79,10 @@ pub fn markdown_to_html(markdown: &str, ss: &SyntaxSet, ts: &ThemeSet, _file_pat
 
     for event in parser {
         match event {
+            Event::Rule => {
+                continue;
+            }
+
             Event::Start(Tag::CodeBlock(kind)) => {
                 in_code_block = true;
                 current_code.clear();
@@ -56,19 +116,24 @@ pub fn markdown_to_html(markdown: &str, ss: &SyntaxSet, ts: &ThemeSet, _file_pat
                         if let Some(syntax) = ss.find_syntax_by_token(lang) {
                             let mut h = HighlightLines::new(syntax, theme);
                             let mut result_html = String::new();
-                            for line in current_code.lines() {
-                                let line_with_newline = format!("{line}\n");
-                                match h.highlight_line(&line_with_newline, ss) {
+
+                            let lines: Vec<&str> = current_code.lines().collect();
+
+                            for line in lines.iter() {
+                                match h.highlight_line(&line, ss) {
                                     Ok(regions) => {
                                         let html_line = styled_line_to_highlighted_html(
                                             &regions[..],
                                             IncludeBackground::No,
                                         )
-                                        .unwrap_or_else(|_| escape_html(&line_with_newline));
+                                        .unwrap_or_else(|_| escape_html(&line));
+
                                         result_html.push_str(&html_line);
+                                        result_html.push('\n');
                                     }
                                     Err(_) => {
-                                        result_html.push_str(&escape_html(&line_with_newline));
+                                        result_html.push_str(&escape_html(&line));
+                                        result_html.push('\n');
                                     }
                                 }
                             }
@@ -104,6 +169,7 @@ pub fn markdown_to_html(markdown: &str, ss: &SyntaxSet, ts: &ThemeSet, _file_pat
     }
 
     let mut body_html = String::new();
+
     html::push_html(&mut body_html, processed_events.into_iter());
     body_html
 }

templates/base.html

@@ -113,24 +113,40 @@
         }
         .back-link span { margin-right: 8px; font-size: 1.2em; }
         img {
-            max-width: 100%;
-            height: auto;
-            display: block;
-            margin: 1.5em auto;
-            border-radius: 6px;
-            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
+          max-width: 100%;
+          height: auto;
+          display: block;
+          margin: 1.5em auto;
+          border-radius: 6px;
+          box-shadow: 0 4px 6px rgba(0,0,0,0.1);
         }
-        /* Стили для списка файлов */
-        ul { list-style-type: none; padding: 0; margin: 0; }
-        li { padding: 10px 0; border-bottom: 1px solid #333; }
+        ul {
+          list-style-type: disc;
+          padding: 0;
+          margin: 0;
+          padding-left: 1.5em;
+        }
+        ol {
+          padding-left: 1.5em;
+          list-style-type: decimal;
+        }
+        li {
+          padding: .5em 0;
+        }
+        ul > li::marker, ol > li::marker { display: inline-block; }
         .file-link {
             color: #64b5f6;
             font-size: 1.1em;
             display: flex;
             align-items: center;
         }
-        .file-link:hover { color: #90caf9; }
-        .icon { margin-right: 10px; min-width: 24px; }
+        .file-link:hover {
+          color: #90caf9;
+        }
+        .icon {
+          margin-right: 10px;
+          min-width: 24px;
+        }
     </style>
 </head>
 <body>
@@ -149,6 +165,9 @@
         <div class="footer">
             <a href="/">← Main</a>
             <a href="/random">🎲 Random note</a>
+            {% block footer %}
+            <p>{{ package_name }} v{{ version }}</p>
+            {% endblock %}
         </div>
     </div>