added /font/%7Bfontstack%7D/%7Brange%7D

docs/src/sources-fonts.md

@@ -59,6 +59,18 @@ curl http://127.0.0.1:3000/catalog
 }
 ```
 
+we also provide similar information via the `/font/%7Bfontstack%7D/%7Brange%7D` endpoint, because some editors like
+[maputnik](https://maputnik.github.io/) require this to render a list of fonts.
+
+```bash
+curl http://127.0.0.1:3000/font/%7Bfontstack%7D/%7Brange%7D
+[
+    "Overpass Mono Bold",
+    "Overpass Mono Light",
+    "Overpass Mono SemiBold"
+]
+```
+
 ## Using from CLI
 
 A font file or directory can be configured from the [CLI](run-with-cli.md) with one or more `--font` parameters.

docs/src/using.md

@@ -13,6 +13,7 @@ Martin data is available via the HTTP `GET` endpoints:
 | `/sprite/{spriteID}[@2x].{json,png}`     | [Sprite sources](sources-sprites.md)           |
 | `/sdf_sprite/{spriteID}[@2x].{json,png}` | [SDF Sprite sources](sources-sprites.md)       |
 | `/font/{font}/{start}-{end}`             | [Font source](sources-fonts.md)                |
+| `/font/%7Bfontstack%7D/%7Brange%7D`      | [List of all fontstacks](sources-fonts.md)     |
 | `/font/{font1},…,{fontN}/{start}-{end}`  | [Composite Font source](sources-fonts.md)      |
 | `/health`                                | Martin server health check: returns 200 `OK`   |
 

martin/src/fonts/mod.rs

@@ -155,6 +155,12 @@ impl FontSources {
             .collect()
     }
 
+    /// Returns an alphabetically sorted list of font stacks (i.e. the name of the font)
+    #[must_use]
+    pub fn get_fontstacks(&self) -> Vec<String> {
+        self.fonts.keys().cloned().sorted().collect()
+    }
+
     /// Given a list of IDs in a format "id1,id2,id3", return a combined font.
     #[allow(clippy::cast_possible_truncation)]
     pub fn get_font_range(&self, ids: &str, start: u32, end: u32) -> FontResult<Vec<u8>> {

martin/src/srv/fonts.rs

@@ -30,6 +30,18 @@ async fn get_font(path: Path<FontRequest>, fonts: Data<FontSources>) -> ActixRes
         .body(data))
 }
 
+/// Returns the available font stacks
+///
+/// Separate from the [`/catalog`](crate::srv::server::get_catalog) route to allow editors like
+/// [maputnik](https://maputnik.github.io/) to list fonts.
+/// To match the route `/font/%7Bfontstack%7D/%7Brange%7D`, macros are not possible due the route
+/// clashing with the path-parameter mechanism.
+#[allow(clippy::unused_async)]
+pub(crate) async fn get_fontstacks(fonts: Data<FontSources>) -> HttpResponse {
+    let fontstacks = fonts.get_fontstacks();
+    HttpResponse::Ok().json(fontstacks)
+}
+
 pub fn map_font_error(e: FontError) -> actix_web::Error {
     #[allow(clippy::enum_glob_use)]
     use FontError::*;

martin/src/srv/server.rs

@@ -120,7 +120,10 @@ pub fn router(cfg: &mut web::ServiceConfig, #[allow(unused_variables)] usr_cfg:
         .service(crate::srv::sprites::get_sprite_png);
 
     #[cfg(feature = "fonts")]
-    cfg.service(crate::srv::fonts::get_font);
+    cfg.service(crate::srv::fonts::get_font).service(
+        web::resource("/font/{fontstack}/{route}") // matches only /font/%7Bfontstack%7D/%7Brange%7D
+            .route(web::get().to(crate::srv::fonts::get_fontstacks)),
+    );
 
     #[cfg(feature = "webui")]
     {

tests/expected/configured/fontstacks.json

@@ -0,0 +1,4 @@
+[
+  "Overpass Mono Light",
+  "Overpass Mono Regular"
+]

tests/test.sh

@@ -380,6 +380,7 @@ test_png sdf_spr_cmp_2 sdf_sprite/src1,[email protected]
 test_font font_1      font/Overpass%20Mono%20Light/0-255
 test_font font_2      font/Overpass%20Mono%20Regular/0-255
 test_font font_3      font/Overpass%20Mono%20Regular,Overpass%20Mono%20Light/0-255
+test_jsn fontstacks   "font/{fontstack}/{range}"
 
 # Test comments override
 test_jsn tbl_comment_cfg  MixPoints