CLI command to serve docs locally

docs/cli.md

@@ -105,6 +105,16 @@ This command lets you configure the behavior of QMK. For the full `qmk config` d
 qmk config [-ro] [config_token1] [config_token2] [...] [config_tokenN]
 ```
 
+## `qmk docs`
+
+This command starts a local HTTP server which you can use for browsing or improving the docs. Default port is 8080.
+
+**Usage**:
+
+```
+qmk docs [-p PORT]
+```
+
 ## `qmk doctor`
 
 This command examines your environment and alerts you to potential build or flash problems.

lib/python/qmk/cli/__init__.py

@@ -5,6 +5,7 @@
 from . import cformat
 from . import compile
 from . import config
+from . import docs
 from . import doctor
 from . import hello
 from . import json

lib/python/qmk/cli/docs.py

@@ -0,0 +1,20 @@
+"""Serve QMK documentation locally
+"""
+import http.server
+from os import chdir
+
+from milc import cli
+
+
+@cli.argument('-p', '--port', default=8080, help='Port number to use.')
+@cli.subcommand('Local instance of QMK docs')
+def docs(cli):
+    """Spin up a local HTTPServer instance for the QMK docs.
+    """
+    cli.log.info("Serving QMK docs locally on port %d.", cli.config.docs.port)
+    cli.log.info("Press Control+C to exit.")
+
+    chdir('docs')
+
+    httpd = http.server.HTTPServer(('', cli.config.docs.port), http.server.SimpleHTTPRequestHandler)
+    httpd.serve_forever()