fix: handle custom yaml tag '!unsafe'

ansiblelater/utils/rulehelper.py

@@ -15,6 +15,7 @@ from .yamlhelper import action_tasks
 from .yamlhelper import normalize_task
 from .yamlhelper import normalized_yaml
 from .yamlhelper import parse_yaml_linenumbers
+from .yamlhelper import UnsafeTag
 
 
 def get_tasks(candidate, settings):
@@ -160,6 +161,9 @@ def get_raw_yaml(candidate, settings):
     if not candidate.faulty:
         try:
             with codecs.open(candidate.path, mode="rb", encoding="utf-8") as f:
+                yaml.add_constructor(
+                    UnsafeTag.yaml_tag, UnsafeTag.yaml_constructor, Loader=yaml.SafeLoader
+                )
                 content = yaml.safe_load(f)
         except yaml.YAMLError as e:
             errors.append(
@@ -176,6 +180,9 @@ def run_yamllint(candidate, options="extends: default"):
     if not candidate.faulty:
         try:
             with codecs.open(candidate.path, mode="rb", encoding="utf-8") as f:
+                yaml.add_constructor(
+                    UnsafeTag.yaml_tag, UnsafeTag.yaml_constructor, Loader=yaml.SafeLoader
+                )
                 yaml.safe_load(f)
 
                 for problem in linter.run(f, YamlLintConfig(options)):

ansiblelater/utils/yamlhelper.py

@@ -576,3 +576,16 @@ def normalized_yaml(file, options):
     except (yaml.parser.ParserError, yaml.scanner.ScannerError) as e:
         raise LaterError("syntax error", e)
     return lines
+
+
+class UnsafeTag:
+    """Handle custom yaml unsafe tag."""
+
+    yaml_tag = u"!unsafe"
+
+    def __init__(self, value):
+        self.unsafe = value
+
+    @staticmethod
+    def yaml_constructor(loader, node):
+        return loader.construct_scalar(node)