add: bozodown

src/bozodown.py

@@ -0,0 +1,139 @@
+from collections.abc import Callable
+from typing import Any
+
+def _photohub_render(id: str, text: str) -> str:
+    if (id == "img"):
+        return f"<img src='{text[2:-1]}'>"
+
+def _bozodown_render(id: str, text: str) -> str:
+    if (id == "list"):
+        print("error: list not supported")
+        return ""
+    
+
+_specific_case_namespaces: dict[str, Callable[[str, str], str]] = {
+    "bozodown": _bozodown_render,
+    "photohub": _photohub_render,
+} 
+
+
+_converters: list[dict[str, str]] = [
+    {   
+        "from_prefix": "# ",
+        "from_suffix": "\n",
+        "to_prefix": "<h1>",
+        "to_suffix": "</h1>",
+    },
+    {   
+        "from_prefix": "## ",
+        "from_suffix": "\n",
+        "to_prefix": "<h2>",
+        "to_suffix": "</h2>",
+    },
+    {   
+        "from_prefix": "### ",
+        "from_suffix": "\n",
+        "to_prefix": "<h3>",
+        "to_suffix": "</h3>",
+    },
+    {   
+        "from_prefix": "#### ",
+        "from_suffix": "\n",
+        "to_prefix": "<h4>",
+        "to_suffix": "</h4>",
+    },
+    {
+        "from_prefix": "`",
+        "from_suffix": "`",
+        "to_prefix": "<p><code>",
+        "to_suffix": "</code></p>",
+    },
+    {
+        "from_prefix": "**",
+        "from_suffix": "**",
+        "to_prefix": "<strong>",
+        "to_suffix": "</strong>",
+    },
+    {
+        "from_prefix": "- ",
+        "from_suffix": "\n",
+        "code": "bozodown:list",
+    },
+    {
+        "from_prefix": "```",
+        "from_suffix": "```",
+        "to_prefix": "<pre><code>",
+        "to_suffix": "</code></pre>",
+    },
+    {
+        "from_prefix": "![",
+        "from_suffix": "]",
+        "code": "photohub:img",
+    },
+    {
+        "from_prefix": "- [ ] ",
+        "from_suffix": "\n",
+        "to_prefix": "<li><input type='checkbox' disabled> ",
+        "to_suffix": "</li>",
+    },
+    {
+        "from_prefix": "- [x] ",
+        "from_suffix": "\n",
+        "to_prefix": "<li><input type='checkbox' checked disabled> ",
+        "to_suffix": "</li>",
+    },
+    {
+        "from_prefix": "<br>",
+        "from_suffix": "",
+        "to_prefix": "<br>",
+    },
+]
+
+_default_converter: dict[str, str] = {
+    "from_prefix": "",
+    "to_prefix": "<p>",
+    "to_suffix": "</p>",
+}
+
+def _render_element(text: str, converter: dict[str, str]) -> str:
+    code: str = converter.get("code")
+    if (code is not None):
+        namespace, id = code.split(":")
+        print(namespace, id)
+        func = _specific_case_namespaces[namespace]
+        return func(id, text)
+    print(converter)
+    start: int = len(converter["from_prefix"])
+    stop: int = len(text) - len(converter.get("from_suffix", ""))
+    return f"{converter['to_prefix']}{text[start:stop]}{converter['to_suffix']}"
+    
+def _get_first_converter(text: str) -> tuple[str, dict] | None:
+    first_converter_found: dict[str, str | Callable[[str, list[str]], Any]] | None = None
+    start: int | None = None
+    for converter in _converters:
+        matching_patern_pos: str = text.find(converter['from_prefix'])
+        if (matching_patern_pos != -1):
+            if (first_converter_found is None or matching_patern_pos < start):
+                first_converter_found = converter
+                start = matching_patern_pos
+    if (first_converter_found is None):
+        return text, _default_converter
+    if (start != 0):
+        return text[:start], _default_converter
+    suffix: int = first_converter_found.get("from_suffix", "")
+    prefix: int = first_converter_found['from_prefix']
+    stop: int = text.find(suffix, start)
+    if (stop == -1):
+        print(f"error: '{prefix}' was never finished by a '{suffix}'")
+        return
+    stop += len(suffix)
+    return text[start:stop], first_converter_found
+
+def render(raw_content: str) -> str:
+    content: str = ""
+    to_parse: str = raw_content
+    while len(to_parse) > 0:
+        text, converter = _get_first_converter(to_parse)
+        content += _render_element(text, converter)
+        to_parse = to_parse[len(text):]
+    return content