feat: integrate .railsignore handling in config loading

Author: Pouyanpi

nemoguardrails/rails/llm/config.py

@@ -14,7 +14,7 @@
 # limitations under the License.
 
 """Module for the configuration of rails."""
-import fnmatch
+
 import logging
 import os
 import warnings
@@ -24,11 +24,11 @@
 from pydantic import BaseModel, ValidationError, root_validator
 from pydantic.fields import Field
 
+from nemoguardrails import utils
 from nemoguardrails.colang import parse_colang_file, parse_flow_elements
 from nemoguardrails.colang.v2_x.lang.colang_ast import Flow
 from nemoguardrails.colang.v2_x.lang.utils import format_colang_parsing_error_message
 from nemoguardrails.colang.v2_x.runtime.errors import ColangParsingError
-from nemoguardrails.utils import get_railsignore_patterns
 
 log = logging.getLogger(__name__)
 
@@ -552,13 +552,19 @@ def _load_path(
     if not os.path.exists(config_path):
         raise ValueError(f"Could not find config path: {config_path}")
 
+    # the first .railsignore file found from cwd down to its subdirectories
+    railsignore_path = utils.get_railsignore_path(config_path)
+    ignore_patterns = utils.get_railsignore_patterns(railsignore_path)
+
     if os.path.isdir(config_path):
         for root, _, files in os.walk(config_path, followlinks=True):
             # Followlinks to traverse symlinks instead of ignoring them.
 
             for file in files:
                 # Verify railsignore to skip loading
-                ignored_by_railsignore = _is_file_ignored_by_railsignore(file)
+                ignored_by_railsignore = utils.is_ignored_by_railsignore(
+                    file, ignore_patterns
+                )
 
                 if ignored_by_railsignore:
                     continue
@@ -1210,16 +1216,3 @@ def _generate_rails_flows(flows):
         flow_definitions.insert(1, _LIBRARY_IMPORT + _NEWLINE * 2)
 
     return flow_definitions
-
-
-def _is_file_ignored_by_railsignore(filename: str) -> bool:
-    ignore = False
-
-    # Load candidate patterns from railsignore
-    candidate_patterns = get_railsignore_patterns()
-
-    for pattern in candidate_patterns:
-        if fnmatch.fnmatch(filename, pattern):
-            ignore = True
-
-    return ignore