linux-kernel - [PATCH v2 09/12] docs: sphinx: add a parser template for yaml files

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Message-ID: <39789f17215178892544ffc408a4d0d9f4017f37.1749723671.git.mchehab+huawei@kernel.org>
Date: Thu, 12 Jun 2025 12:32:01 +0200
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Linux Doc Mailing List <linux-doc@...r.kernel.org>,
	Jonathan Corbet <corbet@....net>
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
	"Akira Yokosawa" <akiyks@...il.com>,
	"Breno Leitao" <leitao@...ian.org>,
	"David S. Miller" <davem@...emloft.net>,
	"Donald Hunter" <donald.hunter@...il.com>,
	"Eric Dumazet" <edumazet@...gle.com>,
	"Ignacio Encinas Rubio" <ignacio@...cinas.com>,
	"Jan Stancek" <jstancek@...hat.com>,
	"Marco Elver" <elver@...gle.com>,
	"Mauro Carvalho Chehab" <mchehab+huawei@...nel.org>,
	"Paolo Abeni" <pabeni@...hat.com>,
	"Ruben Wauters" <rubenru09@....com>,
	"Shuah Khan" <skhan@...uxfoundation.org>,
	joel@...lfernandes.org,
	linux-kernel-mentees@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	lkmm@...ts.linux.dev,
	netdev@...r.kernel.org,
	peterz@...radead.org,
	stern@...land.harvard.edu
Subject: [PATCH v2 09/12] docs: sphinx: add a parser template for yaml files

Add a simple sphinx.Parser class meant to handle yaml files.

For now, it just replaces a yaml file by a simple ReST
code. I opted to do this way, as this patch can be used as
basis for new file format parsers. We may use this as an
example to parse other types of files.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 Documentation/sphinx/parser_yaml.py | 63 +++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100755 Documentation/sphinx/parser_yaml.py

diff --git a/Documentation/sphinx/parser_yaml.py b/Documentation/sphinx/parser_yaml.py
new file mode 100755
index 000000000000..b3cde9cf7aac
--- /dev/null
+++ b/Documentation/sphinx/parser_yaml.py
@@ -0,0 +1,63 @@
+"""
+Sphinx extension for processing YAML files
+"""
+
+import os
+
+from docutils.parsers.rst import Parser as RSTParser
+from docutils.statemachine import ViewList
+
+from sphinx.util import logging
+from sphinx.parsers import Parser
+
+from pprint import pformat
+
+logger = logging.getLogger(__name__)
+
+class YamlParser(Parser):
+    """Custom parser for YAML files."""
+
+    supported = ('yaml', 'yml')
+
+    # Overrides docutils.parsers.Parser. See sphinx.parsers.RSTParser
+    def parse(self, inputstring, document):
+        """Parse YAML and generate a document tree."""
+
+        self.setup_parse(inputstring, document)
+
+        result = ViewList()
+
+        try:
+            # FIXME: Test logic to generate some ReST content
+            basename = os.path.basename(document.current_source)
+            title = os.path.splitext(basename)[0].replace('_', ' ').title()
+
+            msg = f"{title}\n"
+            msg += "=" * len(title) + "\n\n"
+            msg += "Something\n"
+
+            # Parse message with RSTParser
+            for i, line in enumerate(msg.split('\n')):
+                result.append(line, document.current_source, i)
+
+            rst_parser = RSTParser()
+            rst_parser.parse('\n'.join(result), document)
+
+        except Exception as e:
+            document.reporter.error("YAML parsing error: %s" % pformat(e))
+
+        self.finish_parse()
+
+def setup(app):
+    """Setup function for the Sphinx extension."""
+
+    # Add YAML parser
+    app.add_source_parser(YamlParser)
+    app.add_source_suffix('.yaml', 'yaml')
+    app.add_source_suffix('.yml', 'yaml')
+
+    return {
+        'version': '1.0',
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+    }
-- 
2.49.0