Initial commit

custom_components/lovelace_gen/__init__.py

@@ -0,0 +1,44 @@
+import os
+import logging
+import json
+import io
+import time
+
+import jinja2
+
+from homeassistant.util.yaml import loader
+from homeassistant.exceptions import HomeAssistantError
+
+_LOGGER = logging.getLogger(__name__)
+
+jinja = jinja2.Environment(loader=jinja2.FileSystemLoader("/"))
+
+def load_yaml(fname, args={}):
+    try:
+        stream = io.StringIO(jinja.get_template(fname).render(args))
+        stream.name = fname
+        return loader.yaml.load(stream, Loader=loader.SafeLineLoader) or {}
+    except loader.yaml.YAMLError as exc:
+        _LOGGER.error(str(exc))
+        raise HomeAssistantError(exc)
+    except UnicodeDecodeError as exc:
+        _LOGGER.error("Unable to read file %s: %s", fname, exc)
+        raise HomeAssistantError(exc)
+
+def _include_yaml(ldr, node):
+    fn, *args = node.value.split(' ', 1)
+    fname = os.path.join(os.path.dirname(ldr.name), fn)
+    if args:
+        args = json.loads(args[0])
+    return loader._add_reference(load_yaml(fname, args), ldr, node)
+
+def _uncache_file(ldr, node):
+    path = node.value
+    timestamp = str(time.time())
+    if '?' in path:
+        return f"{path}&{timestamp}"
+    return f"{path}?{timestamp}"
+
+loader.load_yaml = load_yaml
+loader.yaml.SafeLoader.add_constructor("!include", _include_yaml)
+loader.yaml.SafeLoader.add_constructor("!file", _uncache_file)

custom_components/lovelace_gen/manifest.json

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+{
+  "domain": "lovelace_gen",
+  "name": "Lovelace Gen",
+  "documentation": "",
+  "dependencies": ["lovelace"],
+  "codeowners": [],
+  "requirements": ["jinja2"]
+}