fusible 0.18.0

Electronic linter: a fuse that blows to block firmware code generation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115

use std::io::Cursor;
#[cfg(not(all(studio_bundle, not(debug_assertions))))]
use std::path::PathBuf;

use tiny_http::{Header, Response};

const VIEWER_HTML: &str = include_str!("../assets/viewer.html");
const PROJECT_JS: &str = include_str!("../assets/project.js");
const BOM_JS: &str = include_str!("../assets/bom.js");
const FIRMWARE_JS: &str = include_str!("../assets/firmware.js");
const DESKTOP_JS: &str = include_str!("../assets/desktop.js");
const DRAWER_JS: &str = include_str!("../assets/drawer.js");
const GIT_JS: &str = include_str!("../assets/git.js");
const KICAD_JS: &str = include_str!("../assets/kicad.js");
const THEME_CSS: &str = include_str!("../assets/theme.css");
const FONT_DATA: &[u8] = include_bytes!("../assets/undefined-medium.otf");
const FAVICON_SVG: &str = concat!(
    r##"<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">"##,
    r##"<path fill="#88A888" d="M5 3h14v2H5zm0 16h14v2H5zM3 5h2v14H3zm16 0h2v14h-2zM9 7h6v2H9zm0 8h6v2H9zM7 9h2v"##,
    r##"6H7zm8 0h2v6h-2zm-4-8h2v2h-2zm0 20h2v2h-2zM1 11h2v2H1zm20 0h2v2h-2zm0-4h2v2h-2zm"##,
    r##"0 8h2v2h-2zM1 15h2v2H1zm0-8h2v2H1zm6-6h2v2H7zm8 0h2v2h-2zm0 20h2v2h-2zm-8 0h2v2H7z"/></svg>"##,
);
const MISSING_BUNDLE: &str = "// studio.bundle.js not found — run `bun run build` in studio/";

/// A buffered HTTP response as served by the dev server.
pub(super) type HttpResponse = Response<Cursor<Vec<u8>>>;

/// Returns the studio bundle embedded at compile time in release builds.
#[cfg(all(studio_bundle, not(debug_assertions)))]
pub(super) fn load_studio_bundle() -> Option<String> {
    Some(
        include_str!(concat!(
            env!("CARGO_MANIFEST_DIR"),
            "/src/assets/studio.bundle.js"
        ))
        .to_string(),
    )
}

/// Reads the studio bundle from the source tree so a `bun run build` is picked up without recompiling.
#[cfg(not(all(studio_bundle, not(debug_assertions))))]
pub(super) fn load_studio_bundle() -> Option<String> {
    let bundle_path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("src/assets/studio.bundle.js");
    std::fs::read_to_string(&bundle_path).ok()
}

/// Builds a response with `status`, a `Content-Type` header and `body`.
pub(super) fn http_response(status: u16, content_type: &str, body: Vec<u8>) -> HttpResponse {
    let header = Header::from_bytes(&b"Content-Type"[..], content_type.as_bytes())
        .expect("content type is a valid header value");
    Response::from_data(body)
        .with_header(header)
        .with_status_code(status)
}

/// Returns the viewer page; under the desktop shell it carries the flag and the Projects button.
fn viewer_html(desktop: bool) -> String {
    if !desktop {
        return VIEWER_HTML.into();
    }
    VIEWER_HTML
        .replacen(
            "<head>",
            "<head>\n  <script>window.FUSIBLE_DESKTOP = true;</script>",
            1,
        )
        .replacen(
            "</body>",
            &format!("<script>{DESKTOP_JS}</script>\n</body>"),
            1,
        )
}

/// Serves the embedded viewer, font, favicon and studio bundle; `None` for other paths.
pub(super) fn static_response(
    path: &str,
    bundle: Option<String>,
    desktop: bool,
) -> Option<HttpResponse> {
    let response = match path {
        "/" | "/index.html" => http_response(
            200,
            "text/html; charset=utf-8",
            viewer_html(desktop).into_bytes(),
        ),
        "/studio.bundle.js" => bundle_response(bundle),
        "/project.js" => http_response(
            200,
            "application/javascript; charset=utf-8",
            PROJECT_JS.into(),
        ),
        "/theme.css" => http_response(200, "text/css; charset=utf-8", THEME_CSS.into()),
        "/bom.js" => script_response(BOM_JS),
        "/firmware.js" => script_response(FIRMWARE_JS),
        "/drawer.js" => script_response(DRAWER_JS),
        "/git.js" => script_response(GIT_JS),
        "/kicad.js" => script_response(KICAD_JS),
        "/undefined-medium.otf" => http_response(200, "font/otf", FONT_DATA.to_vec()),
        "/favicon.ico" | "/favicon.svg" => http_response(200, "image/svg+xml", FAVICON_SVG.into()),
        _ => return None,
    };
    Some(response)
}

fn script_response(source: &str) -> HttpResponse {
    http_response(200, "application/javascript; charset=utf-8", source.into())
}

fn bundle_response(bundle: Option<String>) -> HttpResponse {
    let content_type = "application/javascript; charset=utf-8";
    match bundle {
        Some(content) => http_response(200, content_type, content.into_bytes()),
        None => http_response(404, content_type, MISSING_BUNDLE.into()),
    }
}