1 files changed, 60 insertions, 0 deletions
diff --git a/myst_parser/sphinx_ext/main.py b/myst_parser/sphinx_ext/main.py
new file mode 100644
index 0000000..f5aeffc
--- /dev/null
+++ b/myst_parser/sphinx_ext/main.py
@@ -0,0 +1,60 @@
+"""The setup for the sphinx extension."""
+from typing import Any
+
+from sphinx.application import Sphinx
+
+
+def setup_sphinx(app: Sphinx, load_parser=False):
+    """Initialize all settings and transforms in Sphinx."""
+    # we do this separately to setup,
+    # so that it can be called by external packages like myst_nb
+    from myst_parser.config.main import MdParserConfig
+    from myst_parser.parsers.sphinx_ import MystParser
+    from myst_parser.sphinx_ext.directives import (
+        FigureMarkdown,
+        SubstitutionReferenceRole,
+    )
+    from myst_parser.sphinx_ext.mathjax import override_mathjax
+    from myst_parser.sphinx_ext.myst_refs import MystReferenceResolver
+
+    if load_parser:
+        app.add_source_suffix(".md", "markdown")
+        app.add_source_parser(MystParser)
+
+    app.add_role("sub-ref", SubstitutionReferenceRole())
+    app.add_directive("figure-md", FigureMarkdown)
+
+    app.add_post_transform(MystReferenceResolver)
+
+    for name, default, field in MdParserConfig().as_triple():
+        if not field.metadata.get("docutils_only", False):
+            # TODO add types?
+            app.add_config_value(f"myst_{name}", default, "env", types=Any)
+
+    app.connect("builder-inited", create_myst_config)
+    app.connect("builder-inited", override_mathjax)
+
+
+def create_myst_config(app):
+    from sphinx.util import logging
+
+    # Ignore type checkers because the attribute is dynamically assigned
+    from sphinx.util.console import bold  # type: ignore[attr-defined]
+
+    from myst_parser import __version__
+    from myst_parser.config.main import MdParserConfig
+
+    logger = logging.getLogger(__name__)
+
+    values = {
+        name: app.config[f"myst_{name}"]
+        for name, _, field in MdParserConfig().as_triple()
+        if not field.metadata.get("docutils_only", False)
+    }
+
+    try:
+        app.env.myst_config = MdParserConfig(**values)
+        logger.info(bold("myst v%s:") + " %s", __version__, app.env.myst_config)
+    except (TypeError, ValueError) as error:
+        logger.error("myst configuration invalid: %s", error.args[0])
+        app.env.myst_config = MdParserConfig()