Create neutauri_data crate to reduce dependencies

neutauri_data/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+edition = "2021"
+name = "neutauri_data"
+version = "0.1.0"
+
+[dependencies]
+bincode = "1.3"
+brotli = "3.3"
+image = {version = "0.24", optional = true}
+new_mime_guess = {version = "4.0", optional = true}
+serde = {version = "1.0", features = ["derive"]}
+toml = {version = "0.5", optional = true}
+wry = {version = "0.15", default-features = false, features = ["protocol", "tray", "gtk-tray", "transparent", "fullscreen"]}
+
+[features]
+bundler = ["new_mime_guess", "toml", "image"]
+runtime = []

neutauri_data/src/lib.rs

@@ -0,0 +1,443 @@
+use bincode::Options;
+use serde::{Deserialize, Serialize};
+use std::{
+    fs,
+    io::{self, Read, Result, SeekFrom, Seek},
+    path::{self, Component, Path, PathBuf},
+};
+use wry::application::dpi::Position;
+
+const MAGIC_NUMBER_START: &[u8; 9] = b"NEUTFSv01";
+const MAGIC_NUMBER_END: &[u8; 9] = b"NEUTFSEnd";
+const USIZE_LEN: usize = usize::MAX.to_be_bytes().len();
+
+#[non_exhaustive]
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub enum Compress {
+    Brotli,
+    None,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct File {
+    mime: String,
+    data: Vec<u8>,
+    compress: Compress,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+struct Dir {
+    files: Vec<(String, File)>,
+    dirs: Vec<(String, Dir)>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct Data {
+    pub window_attr: WindowAttr,
+    pub webview_attr: WebViewAttr,
+    fs: Dir,
+}
+
+#[derive(Serialize, Deserialize, Copy, Clone, Debug)]
+pub enum WindowSize {
+    Large,
+    Medium,
+    Small,
+    Fixed { width: f64, height: f64 },
+    Scale { factor: f64 },
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct Config {
+    pub source: PathBuf,
+    pub target: PathBuf,
+    pub inner_size: Option<WindowSize>,
+    pub min_inner_size: Option<WindowSize>,
+    pub max_inner_size: Option<WindowSize>,
+    pub resizable: bool,
+    pub fullscreen: bool,
+    pub title: String,
+    pub maximized: bool,
+    pub visible: bool,
+    pub transparent: bool,
+    pub decorations: bool,
+    pub always_on_top: bool,
+    pub icon: Option<PathBuf>,
+    pub spa: bool,
+    pub url: Option<String>,
+    pub html: Option<PathBuf>,
+    pub initialization_script: Option<PathBuf>,
+    pub manifest: Option<PathBuf>,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug, Default)]
+pub struct Icon {
+    pub rgba: Vec<u8>,
+    pub width: u32,
+    pub height: u32,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct WindowAttr {
+    pub inner_size: Option<WindowSize>,
+    pub min_inner_size: Option<WindowSize>,
+    pub max_inner_size: Option<WindowSize>,
+    pub position: Option<Position>,
+    pub resizable: bool,
+    pub fullscreen: bool,
+    pub title: String,
+    pub maximized: bool,
+    pub visible: bool,
+    pub transparent: bool,
+    pub decorations: bool,
+    pub always_on_top: bool,
+    pub icon: Option<Icon>,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+pub struct WebViewAttr {
+    pub visible: bool,
+    pub transparent: bool,
+    pub spa: bool,
+    pub url: Option<String>,
+    pub html: Option<String>,
+    pub initialization_script: Option<String>,
+}
+
+#[cfg(feature = "runtime")]
+impl File {
+    pub fn decompressed_data(&mut self) -> Result<Vec<u8>> {
+        let mut data = Vec::with_capacity(self.data.len());
+        let mut r = brotli::Decompressor::new(self.data.as_slice(), 4096);
+        r.read_to_end(&mut data)?;
+        Ok(data)
+    }
+    pub fn mimetype(&self) -> String {
+        self.mime.clone()
+    }
+}
+
+#[cfg(feature = "runtime")]
+impl Data {
+    pub fn new<P: AsRef<path::Path> + Copy>(path: P) -> Result<Self> {
+        let mut base = fs::File::open(path)?;
+        let base_length = base.metadata()?.len();
+        let mut magic_number_start_data = [0; MAGIC_NUMBER_START.len()];
+        let mut data_length_data = [0; USIZE_LEN];
+        let mut data = Vec::new();
+        let mut magic_number_end_data = [0; MAGIC_NUMBER_END.len()];
+        base.seek(SeekFrom::Start(base_length - MAGIC_NUMBER_END.len() as u64))?;
+        // 此时指针指向 MAGIC_NUMBER_END 之前
+        base.read_exact(&mut magic_number_end_data)?;
+        if &magic_number_end_data != MAGIC_NUMBER_END {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidData,
+                "MAGIC_NUMBER_END not found",
+            ));
+        }
+        base.seek(SeekFrom::Start(
+            base_length - MAGIC_NUMBER_END.len() as u64 - USIZE_LEN as u64,
+        ))?;
+        // 此时指针指向 data_length 之前
+        base.read_exact(&mut data_length_data)?;
+        base.seek(SeekFrom::Start(
+            base_length - u64::from_be_bytes(data_length_data),
+        ))?;
+        // 此时指针指向 MAGIC_NUMBER_START
+        base.read_exact(&mut magic_number_start_data)?;
+        if &magic_number_start_data != MAGIC_NUMBER_START {
+            return Err(io::Error::new(
+                io::ErrorKind::InvalidData,
+                "MAGIC_NUMBER_START not found",
+            ));
+        }
+        base.read_exact(&mut data_length_data)?;
+        // 此时指针指向 Data 前
+        base.take(u64::from_be_bytes(data_length_data))
+            .read_to_end(&mut data)?;
+        let serialize_options = bincode::DefaultOptions::new()
+            .with_fixint_encoding()
+            .allow_trailing_bytes()
+            .with_limit(104857600 /* 100MiB */);
+        let fs: Self = match serialize_options.deserialize(&data) {
+            Ok(fs) => fs,
+            Err(e) => {
+                return Err(io::Error::new(io::ErrorKind::InvalidData, e));
+            }
+        };
+        Ok(fs)
+    }
+
+    fn open_file(&self, current_dir: &Dir, mut path: path::Iter) -> Result<File> {
+        let next_path = match path.next() {
+            Some(str) => str.to_string_lossy().to_string(),
+            None => return Err(io::Error::new(io::ErrorKind::NotFound, "file not found")),
+        };
+        for (name, file) in &current_dir.files {
+            if next_path == *name {
+                return Ok(file.clone());
+            }
+        }
+        for (name, dir) in &current_dir.dirs {
+            if next_path == *name {
+                return self.open_file(dir, path);
+            }
+        }
+        Err(io::Error::new(io::ErrorKind::NotFound, "file not found"))
+    }
+
+    pub fn open<P: AsRef<path::Path>>(&self, path: P) -> Result<File> {
+        let path = normalize_path(path.as_ref());
+        let path = if path.starts_with("/") {
+            path.strip_prefix("/")
+                .unwrap_or_else(|_| Path::new(""))
+                .to_path_buf()
+        } else {
+            path
+        };
+        self.open_file(&self.fs, path.iter())
+    }
+}
+
+#[cfg(feature = "bundler")]
+impl Dir {
+    // 使用本地文件系统填充 Dir 结构体
+    fn fill_with<P: AsRef<path::Path>>(
+        &mut self,
+        root: P,
+        path: P,
+        length: &mut u64,
+    ) -> Result<()> {
+        // 遍历目录
+        for entry in fs::read_dir(path)? {
+            let path = entry?.path();
+            // 获取目录/文件名，如果为".."则跳过
+            let name = match path.file_name() {
+                Some(s) => match s.to_str() {
+                    Some(s) => s.to_string(),
+                    None => break,
+                },
+                None => break,
+            };
+            // 优先填充文件
+            if path.is_file() {
+                let mut source = fs::File::open(&path)?;
+                let mime = new_mime_guess::from_path(&path)
+                    .first_or_octet_stream()
+                    .to_string();
+                let mut data = brotli::CompressorReader::new(&mut source, 4096, 9, 21);
+                let mut buffer = Vec::new();
+                data.read_to_end(&mut buffer)?;
+                let size = buffer.len();
+                let file = File {
+                    mime,
+                    data: buffer,
+                    compress: Compress::Brotli,
+                };
+                *length += size as u64;
+                self.files.push((name, file));
+            } else if path.is_dir() {
+                // 构造子目录
+                let mut dir = Dir {
+                    files: Vec::new(),
+                    dirs: Vec::new(),
+                };
+                // 填充子目录
+                dir.fill_with(root.as_ref(), &path, length)?;
+                self.dirs.push((name, dir));
+            }
+        }
+        Ok(())
+    }
+}
+
+#[cfg(feature = "bundler")]
+impl Data {
+    pub fn build_from_dir<P: AsRef<path::Path>>(
+        source: P,
+        window_attr: WindowAttr,
+        webview_attr: WebViewAttr,
+    ) -> Result<Vec<u8>> {
+        let embed_fs = Self::from_dir(source, window_attr, webview_attr)?;
+        embed_fs.build()
+    }
+
+    fn from_dir<P: AsRef<path::Path>>(
+        source: P,
+        window_attr: WindowAttr,
+        webview_attr: WebViewAttr,
+    ) -> Result<Self> {
+        let source = source.as_ref();
+        let mut length: u64 = 0;
+        let mut dir = Dir {
+            files: Vec::new(),
+            dirs: Vec::new(),
+        };
+        dir.fill_with(source, source, &mut length)?;
+        Ok(Self {
+            fs: dir,
+            window_attr,
+            webview_attr,
+        })
+    }
+
+    fn build(self) -> Result<Vec<u8>> {
+        let serialize_options = bincode::DefaultOptions::new()
+            .with_fixint_encoding()
+            .allow_trailing_bytes()
+            .with_limit(104857600 /* 100MiB */);
+        // 构建文件头
+        let data = match serialize_options.serialize(&self) {
+            Ok(vec) => vec,
+            Err(e) => {
+                return Err(io::Error::new(io::ErrorKind::InvalidData, e));
+            }
+        };
+
+        let mut target: Vec<u8> = Vec::new();
+        target.extend(MAGIC_NUMBER_START);
+        target.extend(&data.len().to_be_bytes());
+        target.extend(&data);
+        let target_length = target.len();
+        let target_length = target_length + USIZE_LEN;
+        let target_length = target_length + MAGIC_NUMBER_END.len();
+        target.extend(target_length.to_be_bytes());
+        target.extend(MAGIC_NUMBER_END);
+
+        Ok(target)
+    }
+
+    pub fn pack<P: AsRef<path::Path>>(config_path: P) -> Result<()> {
+        let config_path = config_path.as_ref().canonicalize()?;
+        let config: Config = toml::from_str(fs::read_to_string(&config_path)?.as_str())?;
+        let source = match config_path.parent() {
+            Some(path) => path.join(&config.source).canonicalize()?,
+            None => config.source.canonicalize()?,
+        };
+        let target = match config_path.parent() {
+            Some(path) => normalize_path(&path.join(&config.target)),
+            None => normalize_path(&config.target),
+        };
+        fs::write(
+            target,
+            Self::build_from_dir(source, config.window_attr()?, config.webview_attr()?)?,
+        )?;
+        Ok(())
+    }
+}
+
+#[cfg(feature = "bundler")]
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            source: PathBuf::from("."),
+            target: PathBuf::from("app.neu"),
+            inner_size: Some(WindowSize::Medium),
+            min_inner_size: None,
+            max_inner_size: None,
+            resizable: true,
+            fullscreen: false,
+            title: "".into(),
+            maximized: false,
+            visible: true,
+            transparent: false,
+            decorations: true,
+            always_on_top: false,
+            icon: None,
+            spa: false,
+            url: Some("/index.html".into()),
+            html: None,
+            initialization_script: None,
+            manifest: None,
+        }
+    }
+}
+
+#[cfg(feature = "bundler")]
+impl Config {
+    pub fn window_attr(&self) -> Result<WindowAttr> {
+        Ok(WindowAttr {
+            inner_size: self.inner_size,
+            min_inner_size: self.min_inner_size,
+            max_inner_size: self.max_inner_size,
+            position: None,
+            resizable: self.resizable,
+            fullscreen: self.fullscreen,
+            title: self.title.clone(),
+            maximized: self.maximized,
+            visible: self.visible,
+            transparent: self.transparent,
+            decorations: self.decorations,
+            always_on_top: self.always_on_top,
+            icon: match &self.icon {
+                Some(path) => Some(load_icon(path.as_path())?),
+                None => None,
+            },
+        })
+    }
+    pub fn webview_attr(&self) -> Result<WebViewAttr> {
+        Ok(WebViewAttr {
+            visible: self.visible,
+            transparent: self.transparent,
+            spa: self.spa,
+            url: self.url.clone(),
+            html: match &self.html {
+                Some(path) => fs::read_to_string(path.as_path()).ok(),
+                None => None,
+            },
+            initialization_script: match &self.initialization_script {
+                Some(path) => fs::read_to_string(path.as_path()).ok(),
+                None => None,
+            },
+        })
+    }
+}
+
+#[cfg(feature = "runtime")]
+pub fn load<P: AsRef<path::Path> + Copy>(path: P) -> Result<Data> {
+    Data::new(path)
+}
+
+#[cfg(feature = "bundler")]
+pub fn pack<P: AsRef<path::Path>>(config: P) -> Result<()> {
+    Data::pack(config)
+}
+
+#[cfg(feature = "bundler")]
+fn load_icon(path: &Path) -> Result<Icon> {
+    let image = image::open(path)
+        .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?
+        .to_rgba8();
+    Ok(Icon {
+        width: image.dimensions().0,
+        height: image.dimensions().1,
+        rgba: image.into_raw(),
+    })
+}
+
+pub fn normalize_path(path: &Path) -> PathBuf {
+    let mut components = path.components().peekable();
+    let mut ret = if let Some(c @ Component::Prefix(..)) = components.peek().cloned() {
+        components.next();
+        PathBuf::from(c.as_os_str())
+    } else {
+        PathBuf::new()
+    };
+
+    for component in components {
+        match component {
+            Component::Prefix(..) => unreachable!(),
+            Component::RootDir => {
+                ret.push(component.as_os_str());
+            }
+            Component::CurDir => {}
+            Component::ParentDir => {
+                ret.pop();
+            }
+            Component::Normal(c) => {
+                ret.push(c);
+            }
+        }
+    }
+    ret
+}