added prefix option

src/md2html/md2html.py

@@ -1,20 +1,25 @@
 import sys
 from os.path import dirname, join, relpath
 from time import time
-from typing import Optional
+from typing import Optional, TYPE_CHECKING
 
 import markdown
 
+if TYPE_CHECKING:
+    from _typeshed import StrOrBytesPath
+
 STATIC_RESOURCES: set[str] = {
     '/github-markdown.css',
     '/custom.css',
     '/hot-reload.js',
     '/pygment.css',
+    '/markdown.svg'
 }
 STATIC_CACHE: dict[str, tuple[str, float]] = {}
 
 MARDOWN_EXTENSIONS = ['extra', 'smarty', 'tables', 'codehilite']
 
+
 def load_from_cache(path) -> tuple[str, float]:
     global STATIC_CACHE
     if path not in STATIC_CACHE:
@@ -24,7 +29,8 @@ def load_from_cache(path) -> tuple[str, float]:
 
 
 def compile_html(url_path,
-                 mdfile=None,
+                 mdfile: 'StrOrBytesPath',
+                 prefix: Optional['StrOrBytesPath'] = None,
                  extensions: Optional[list[str]] = None,
                  raw: bool = False) -> str:
     with mdfile and open(mdfile, 'r') or sys.stdin as instream:
@@ -33,9 +39,9 @@ def compile_html(url_path,
         doc = html
     else:
         parent = dirname(url_path)
-        prefix = relpath('/', start=parent)
+        prefix = prefix or relpath('/', start=parent)
         script = f'<script src="{prefix}/hot-reload.js", type="text/javascript" defer="true"></script>'
-        css = ''
+        css = f'<link rel="icon" type="image/x-icon" href="{prefix}/markdown.svg">'
         for css_file in ('github-markdown.css', 'pygment.css', 'custom.css'):
             css += f'        <link rel="stylesheet" href="{prefix}/{css_file}">'
         doc = load_from_cache('/template.html')[0].format(content=html, script=script, css=css)