Add ability to recognize base file types

examples/galaxy.yml

@@ -0,0 +1,14 @@
+name: foo
+namespace: bar
+version: 1.2.3
+authors:
+  - John
+readme: ../README.md
+description: ...
+dependencies:
+  "other_namespace.collection1": ">=1.0.0"
+  "other_namespace.collection2": ">=2.0.0,<3.0.0"
+  "anderson55.my_collection": "*"    # note: "*" selects the highest version available
+license:
+  - GPL
+  - Apache

src/ansiblelint/config.py

@@ -14,6 +14,8 @@
 DEFAULT_KINDS = [
     # Do not sort this list, order matters.
     {"requirements": "**/meta/requirements.yml"},  # v1 only
+    # https://docs.ansible.com/ansible/latest/dev_guide/collections_galaxy_meta.html
+    {"galaxy": "**/galaxy.yml"},  # Galaxy collection meta
     {"reno": "**/releasenotes/*/*.{yaml,yml}"},  # reno release notes
     {"playbook": "**/playbooks/*.{yml,yaml}"},
     {"playbook": "**/*playbook*.{yml,yaml}"},
@@ -29,10 +31,26 @@
     {"yaml": "**/molecule/*/{base,molecule}.{yaml,yml}"},  # molecule config
     {"requirements": "**/requirements.yml"},  # v2 and v1
     {"playbook": "**/molecule/*/*.{yaml,yml}"},  # molecule playbooks
+    {"yaml": "**/{.ansible-lint,.yamllint}"},
     {"yaml": "**/*.{yaml,yml}"},
     {"yaml": "**/.*.{yaml,yml}"},
 ]
 
+BASE_KINDS = [
+    # These assignations are only for internal use and are only inspired by
+    # MIME/IANA model. Their purpose is to be able to process a file based on
+    # it type, including generic processing of text files using the prefix.
+    {"text/json": "**/*.json"},  # standardized
+    {"text/markdown": "**/*.md"},  # https://tools.ietf.org/html/rfc7763
+    {"text/rst": "**/*.rst"},  # https://en.wikipedia.org/wiki/ReStructuredText
+    {"text/ini": "**/*.ini"},
+    # YAML has no official IANA assignation
+    {"text/yaml": "**/{.ansible-lint,.yamllint}"},
+    {"text/yaml": "**/*.{yaml,yml}"},
+    {"text/yaml": "**/.*.{yaml,yml}"},
+]
+
+
 options = Namespace(
     colored=True,
     cwd=".",

src/ansiblelint/file_utils.py

@@ -13,7 +13,7 @@
 
 import wcmatch.pathlib
 
-from ansiblelint.config import options
+from ansiblelint.config import BASE_KINDS, options
 from ansiblelint.constants import FileType
 
 if TYPE_CHECKING:
@@ -67,12 +67,17 @@ def expand_paths_vars(paths: List[str]) -> List[str]:
     return paths
 
 
-def kind_from_path(path: Path) -> str:
-    """Determine the file kind based on its name."""
+def kind_from_path(path: Path, base=False) -> str:
+    """Determine the file kind based on its name.
+
+    When called with base=True, it will return the base file type instead
+    of the explicit one. That is expected to return 'yaml' for any yaml files.
+    """
     # pathlib.Path.match patterns are very limited, they do not support *a*.yml
     # glob.glob supports **/foo.yml but not multiple extensions
     pathex = wcmatch.pathlib.PurePath(path.absolute().resolve())
-    for entry in options.kinds:
+    kinds = options.kinds if not base else BASE_KINDS
+    for entry in kinds:
         for k, v in entry.items():
             if pathex.globmatch(
                 v,
@@ -83,6 +88,11 @@ def kind_from_path(path: Path) -> str:
                 ),
             ):
                 return str(k)
+
+    if base:
+        # Unknown base file type is default
+        return ""
+
     if path.is_dir():
         return "role"
 
@@ -146,6 +156,9 @@ def __init__(
             else:
                 self.dir = str(self.path.parent.resolve())
 
+        # determine base file kind (yaml, xml, ini, ...)
+        self.base_kind = kind_from_path(self.path, base=True)
+
     def __getitem__(self, key: Any) -> Any:
         """Provide compatibility subscriptable support."""
         if key == 'path':

src/ansiblelint/rules/YamllintRule.py

@@ -76,7 +76,7 @@ def matchyaml(self, file: Lintable) -> List["MatchError"]:
         """Return matches found for a specific YAML text."""
         matches: List["MatchError"] = []
         filtered_matches = []
-        if file.kind == 'role':
+        if file.base_kind != 'text/yaml':
             return matches
 
         if YamllintRule.config:

test/TestUtils.py

@@ -364,6 +364,7 @@ def test_is_playbook():
             "../roles/geerlingguy.mysql/tasks/configure.yml",
             "tasks",
         ),  # relative path involved
+        ("galaxy.yml", "galaxy"),
     ),
 )
 def test_default_kinds(monkeypatch, path: str, kind: FileType) -> None: