feat: initial admon plugin attempt (#1)

.pre-commit-config.yaml

@@ -27,3 +27,6 @@ repos:
     - flake8-bugbear>=21.3.2
     - flake8-builtins>=1.5.3
     - flake8-comprehensions>=3.4.0
+    args: [
+        --ignore=E501
+    ]

mdformat_admon/plugin.py

@@ -0,0 +1,42 @@
+import textwrap
+from typing import Mapping
+
+from markdown_it import MarkdownIt
+from mdformat.renderer import RenderContext, RenderTreeNode
+from mdformat.renderer.typing import Render
+from mdit_py_plugins.admon import admon_plugin
+
+
+def update_mdit(mdit: MarkdownIt) -> None:
+    """Update the parser,"""
+    mdit.use(admon_plugin)
+
+
+def _render_admon(node: RenderTreeNode, context: RenderContext) -> str:
+    """Render a `RenderTreeNode` of type `admonition`.
+
+    Primarily based on:
+
+    - https://github.com/executablebooks/mdformat-footnote/blob/80852fc20cfba7fd0330b9ac7a1a4df983542942/mdformat_footnote/plugin.py#LL24-L40C29
+
+    And based on:
+
+    - https://github.com/hukkin/mdformat-gfm/blob/cf316a121b6cf35cbff7b0ad6e171f287803f8cb/src/mdformat_gfm/plugin.py
+    - https://github.com/hukkin/mdformat-toc/blob/42624b6f3468da4f793ec7425da872b030714774/mdformat_toc/plugin.py
+    - https://github.com/executablebooks/mdformat-footnote/blob/80852fc20cfba7fd0330b9ac7a1a4df983542942/mdformat_footnote/plugin.py
+
+    """
+    separator = "\n\n"  # TODO: Is this configurable?
+    indent = " " * 4  # FIXME: Is this configurable?
+    title = node.info.strip()
+    body = f"{node.markup} {title}{separator}"
+    with context.indented(len(indent)):  # Modifies context.env['indent_width']
+        elements = [child.render(context) for child in node.children[1:]]
+    body += textwrap.indent(separator.join(elements), indent)
+    return body
+
+
+# A mapping from syntax tree node type to a function that renders it.
+# This can be used to overwrite renderer functions of existing syntax
+# or add support for new syntax.
+RENDERERS: Mapping[str, Render] = {"admonition": _render_admon}

pyproject.toml

@@ -15,16 +15,16 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 keywords = ["mdformat", "markdown", "markdown-it"]
-requires-python = ">=3.7"
+requires-python = ">=3.7.2"
 dependencies = [
     "mdformat >=0.7.0,<0.8.0",
+    "mdit-py-plugins >=0.3.2",
 ]
 dynamic = ["version", "description"]
 
 [project.optional-dependencies]
 test = [
-    "pytest~=6.0",
-    "coverage",
+    "pytest>=6.0",
     "pytest-cov",
 ]
 dev = ["pre-commit"]
@@ -33,7 +33,7 @@ dev = ["pre-commit"]
 Homepage = "https://github.com/executablebooks/mdformat-admon"
 
 [project.entry-points."mdformat.parser_extension"]
-admon = "mdformat_admon"
+admonition = "mdformat_admon"
 
 [tool.flit.sdist]
 include = []

tests/fixtures.md

@@ -1,24 +1,227 @@
-a test
+
+Simple admonition
+.
+!!! note
+    *content*
+.
+!!! note
+    *content*
+.
+
+
+Could contain block elements too
+.
+!!! note
+    ### heading
+
+    -----------
+
+.
+!!! note
+    ### heading
+
+    ______________________________________________________________________
+
+.
+
+
+Shows custom title
+.
+!!! note Custom title
+
+    Some text
+
+.
+!!! note Custom title
+
+    Some text
+
+.
+
+
+Shows no title
+.
+!!! note ""
+    Some text
+
 .
-This is the input Markdown test,
-then below add the expected output.
+!!! note ""
+    Some text
+
+.
+
+
+Closes block after 2 empty lines
+.
+!!! note
+    Some text
+
+
+    A code block
+.
+!!! note
+    Some text
+
+
+    A code block
+.
+
+
+Nested blocks
 .
-This is the input Markdown test,
-then below add the expected output.
+!!! note
+    !!! note
+        Some text
+
+            code block
 .
+!!! note
+    !!! note
+        Some text
 
-another test
+            code block
 .
-Some *markdown*
 
-- a
-- b
-* c
+
+Consecutive admonitions
 .
-Some *markdown*
+!!! note
 
-- a
-- b
+!!! warning
+.
+!!! note
 
-* c
+!!! warning
+.
+
+
+Marker may be indented up to 3 chars
+.
+   !!! note
+       content
+.
+   !!! note
+       content
+.
+
+
+But that's a code block
+.
+    !!! note
+        content
+.
+    !!! note
+        content
+.
+
+
+Some more indent checks
+.
+  !!! note
+   not a code block
+
+    code block
+.
+  !!! note
+   not a code block
+
+    code block
+.
+
+
+Type could be adjacent to marker
+.
+!!!note
+   xxx
+
+.
+!!!note
+   xxx
+
+.
+
+
+Type could be adjacent to marker and content may be shifted up to 3 chars
+.
+!!!note
+      xxx
+
+.
+!!!note
+      xxx
+
+.
+
+
+Or several spaces apart
+.
+!!!     note
+        xxx
+.
+!!!     note
+        xxx
+.
+
+
+Admonitions self-close at the end of the document
+.
+!!! note
+    xxx
+.
+!!! note
+    xxx
+.
+
+
+They could be nested in lists
+.
+- !!! note
+      - a
+      - b
+- !!! warning
+      - c
+      - d
+.
+- !!! note
+      - a
+      - b
+- !!! warning
+      - c
+      - d
+.
+
+
+Or in blockquotes
+.
+> !!! note
+>     xxx
+>     > yyy
+>     zzz
+>
+.
+> !!! note
+>     xxx
+>     > yyy
+>     zzz
+>
+.
+
+
+Renders unknown admonition type
+.
+!!! unknown title
+    content
+.
+!!! unknown title
+    content
+.
+
+
+Does not render
+.
+!!!
+    content
+.
+!!!
+    content
 .

tests/test_fixtures.py

@@ -12,6 +12,5 @@
     "line,title,text,expected", fixtures, ids=[f[1] for f in fixtures]
 )
 def test_fixtures(line, title, text, expected):
-    output = mdformat.text(text, extensions={"admon"})
-    print(output)
-    assert output.rstrip() == expected.rstrip(), output
+    output = mdformat.text(text, extensions={"admonition"})
+    assert output.rstrip() == expected.rstrip()