Issue #73: add port number option.

README.md

@@ -155,7 +155,7 @@ will download OSM data to `cache/2.284,48.860,2.290,48.865.osm` and write output
 | <span style="white-space: nowrap;">`--cache`</span> `<path>` | path for temporary OSM files, default value: `cache` |
 | <span style="white-space: nowrap;">`-z`</span>, <span style="white-space: nowrap;">`--zoom`</span> `<integer>` | OSM zoom level, default value: 18 |
 
-+ see [map configuration options](#map-options)
+plus [map configuration options](#map-options)
 
 Tile generation
 ---------------
@@ -170,7 +170,7 @@ Command `tile` is used to generate PNG tiles for [slippy maps](https://wiki.open
 | <span style="white-space: nowrap;">`-b`</span>, <span style="white-space: nowrap;">`--boundary-box`</span> `<lon1>,<lat1>,<lon2>,<lat2>` | construct the minimum amount of tiles that cover requested boundary box |
 | <span style="white-space: nowrap;">`-z`</span>, <span style="white-space: nowrap;">`--zoom`</span> `<integer>` | OSM zoom levels; can be list of numbers or ranges, e.g. `16-18`, `16,17,18`, or `16,18-20`, default value: `18` |
 
-+ see [map configuration options](#map-options)
+plus [map configuration options](#map-options)
 
 ### Generate one tile ###
 
@@ -229,6 +229,11 @@ roentgen server
 
 Stop server interrupting process with <kbd>Ctrl</kbd> + <kbd>C</kbd>.
 
+| Option | Description |
+|---|---|
+| <span style="white-space: nowrap;">`--cache`</span> `<path>` | path for temporary OSM files, default value: `cache` |
+| <span style="white-space: nowrap;">`--port`</span> `<integer>` | port number, default value: 8080 |
+
 ### Example ###
 
 Create a minimal amount of tiles that cover specified boundary box for zoom levels 16, 17, 18, and 19:

doc/readme.moi

@@ -190,7 +190,7 @@ will download OSM data to \m {cache/2.284,48.860,2.290,48.865.osm} and write out
 
 \options {render}
 
-+ see \ref {#map-options} {map configuration options}
+plus \ref {#map-options} {map configuration options}
 
 \2 {Tile generation} {tile-generation}
 
@@ -198,7 +198,7 @@ Command \m {tile} is used to generate PNG tiles for \ref {https://wiki.openstree
 
 \options {tile}
 
-+ see \ref {#map-options} {map configuration options}
+plus \ref {#map-options} {map configuration options}
 
 \3 {Generate one tile} {generate-one-tile}
 
@@ -244,6 +244,8 @@ Command \m {server} is used to run tile server for slippy maps.
 
 Stop server interrupting process with \kbd {Ctrl} + \kbd {C}.
 
+\options {server}
+
 \3 {Example} {example}
 
 Create a minimal amount of tiles that cover specified boundary box for zoom levels 16, 17, 18, and 19\:

roentgen/server.py

@@ -70,12 +70,11 @@ def ui(options: argparse.Namespace) -> None:
     """Command-line interface for tile server."""
     server: Optional[HTTPServer] = None
     try:
-        port: int = 8080
         handler = _Handler
         handler.cache = Path(options.cache)
         handler.options = options
-        server: HTTPServer = HTTPServer(("", port), handler)
-        logging.info(f"Server started on port {port}.")
+        server: HTTPServer = HTTPServer(("", options.port), handler)
+        logging.info(f"Server started on port {options.port}.")
         server.serve_forever()
     finally:
         if server:

roentgen/ui.py

@@ -133,6 +133,13 @@ def add_server_arguments(parser: argparse.ArgumentParser) -> None:
         default="cache",
         metavar="<path>",
     )
+    parser.add_argument(
+        "--port",
+        help="port number",
+        default=8080,
+        type=int,
+        metavar="<integer>",
+    )
 
 
 def add_element_arguments(parser: argparse.ArgumentParser) -> None: